-/* $Cambridge: exim/src/src/exim.c,v 1.55 2007/01/30 15:10:59 ph10 Exp $ */
-
/*************************************************
* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2007 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
/* See the file NOTICE for conditions of use and distribution. */
#include "exim.h"
+#if defined(__GLIBC__) && !defined(__UCLIBC__)
+# include <gnu/libc-version.h>
+#endif
+
+#ifdef USE_GNUTLS
+# include <gnutls/gnutls.h>
+# if GNUTLS_VERSION_NUMBER < 0x030103 && !defined(DISABLE_OCSP)
+# define DISABLE_OCSP
+# endif
+#endif
+
+#ifndef _TIME_H
+# include <time.h>
+#endif
+
+extern void init_lookup_list(void);
+
/*************************************************
static void *
function_store_get(size_t size)
{
-return store_get((int)size);
+/* For now, regard all RE results as potentially tainted. We might need
+more intelligence on this point. */
+return store_get((int)size, TRUE);
}
static void
+/*************************************************
+* Enums for cmdline interface *
+*************************************************/
+
+enum commandline_info { CMDINFO_NONE=0,
+ CMDINFO_HELP, CMDINFO_SIEVE, CMDINFO_DSCP };
+
+
+
+
/*************************************************
* Compile regular expression and panic on fail *
*************************************************/
*/
const pcre *
-regex_must_compile(uschar *pattern, BOOL caseless, BOOL use_malloc)
+regex_must_compile(const uschar *pattern, BOOL caseless, BOOL use_malloc)
{
int offset;
int options = PCRE_COPT;
pcre_free = function_store_free;
}
if (caseless) options |= PCRE_CASELESS;
-yield = pcre_compile(CS pattern, options, (const char **)&error, &offset, NULL);
+yield = pcre_compile(CCS pattern, options, CCSS &error, &offset, NULL);
pcre_malloc = function_store_get;
pcre_free = function_dummy_free;
if (yield == NULL)
*/
BOOL
-regex_match_and_setup(const pcre *re, uschar *subject, int options, int setup)
+regex_match_and_setup(const pcre *re, const uschar *subject, int options, int setup)
{
int ovector[3*(EXPAND_MAXN+1)];
-int n = pcre_exec(re, NULL, CS subject, Ustrlen(subject), 0,
- PCRE_EOPT | options, ovector, sizeof(ovector)/sizeof(int));
+uschar * s = string_copy(subject); /* de-constifying */
+int n = pcre_exec(re, NULL, CS s, Ustrlen(s), 0,
+ PCRE_EOPT | options, ovector, nelem(ovector));
BOOL yield = n >= 0;
if (n == 0) n = EXPAND_MAXN + 1;
if (yield)
{
- int nn;
- expand_nmax = (setup < 0)? 0 : setup + 1;
- for (nn = (setup < 0)? 0 : 2; nn < n*2; nn += 2)
+ expand_nmax = setup < 0 ? 0 : setup + 1;
+ for (int nn = setup < 0 ? 0 : 2; nn < n*2; nn += 2)
{
- expand_nstring[expand_nmax] = subject + ovector[nn];
+ expand_nstring[expand_nmax] = s + ovector[nn];
expand_nlength[expand_nmax++] = ovector[nn+1] - ovector[nn];
}
expand_nmax--;
+/*************************************************
+* Set up processing details *
+*************************************************/
+
+/* Save a text string for dumping when SIGUSR1 is received.
+Do checks for overruns.
+
+Arguments: format and arguments, as for printf()
+Returns: nothing
+*/
+
+void
+set_process_info(const char *format, ...)
+{
+gstring gs = { .size = PROCESS_INFO_SIZE - 2, .ptr = 0, .s = process_info };
+gstring * g;
+int len;
+va_list ap;
+
+g = string_fmt_append(&gs, "%5d ", (int)getpid());
+len = g->ptr;
+va_start(ap, format);
+if (!string_vformat(g, 0, format, ap))
+ {
+ gs.ptr = len;
+ g = string_cat(&gs, US"**** string overflowed buffer ****");
+ }
+g = string_catn(g, US"\n", 1);
+string_from_gstring(g);
+process_info_len = g->ptr;
+DEBUG(D_process_info) debug_printf("set_process_info: %s", process_info);
+va_end(ap);
+}
+
+/***********************************************
+* Handler for SIGTERM *
+***********************************************/
+
+static void
+term_handler(int sig)
+{
+exit(1);
+}
+
+
/*************************************************
* Handler for SIGUSR1 *
*************************************************/
setting up a handler that causes automatic restarting of any system call
that is in progress at the time.
+This function takes care to be signal-safe.
+
Argument: the signal number (SIGUSR1)
Returns: nothing
*/
static void
usr1_handler(int sig)
{
-sig = sig; /* Keep picky compilers happy */
-log_write(0, LOG_PROCESS, "%s", process_info);
-log_close_all();
-os_restarting_signal(SIGUSR1, usr1_handler);
+int fd;
+
+os_restarting_signal(sig, usr1_handler);
+
+if ((fd = Uopen(process_log_path, O_APPEND|O_WRONLY, LOG_MODE)) < 0)
+ {
+ /* If we are already running as the Exim user, try to create it in the
+ current process (assuming spool_directory exists). Otherwise, if we are
+ root, do the creation in an exim:exim subprocess. */
+
+ int euid = geteuid();
+ if (euid == exim_uid)
+ fd = Uopen(process_log_path, O_CREAT|O_APPEND|O_WRONLY, LOG_MODE);
+ else if (euid == root_uid)
+ fd = log_create_as_exim(process_log_path);
+ }
+
+/* If we are neither exim nor root, or if we failed to create the log file,
+give up. There is not much useful we can do with errors, since we don't want
+to disrupt whatever is going on outside the signal handler. */
+
+if (fd < 0) return;
+
+(void)write(fd, process_info, process_info_len);
+(void)close(fd);
}
when a bug in a function that calls milliwait() caused it to pass invalid data.
That's when I added the check. :-)
+We assume it to be not worth sleeping for under 50us; this value will
+require revisiting as hardware advances. This avoids the issue of
+a zero-valued timer setting meaning "never fire".
+
Argument: an itimerval structure containing the interval
Returns: nothing
*/
{
sigset_t sigmask;
sigset_t old_sigmask;
+
+if (itval->it_value.tv_usec < 50 && itval->it_value.tv_sec == 0)
+ return;
(void)sigemptyset(&sigmask); /* Empty mask */
(void)sigaddset(&sigmask, SIGALRM); /* Add SIGALRM */
(void)sigprocmask(SIG_BLOCK, &sigmask, &old_sigmask); /* Block SIGALRM */
Returns: -1, 0, or +1
*/
-int
+static int
exim_tvcmp(struct timeval *t1, struct timeval *t2)
{
if (t1->tv_sec > t2->tv_sec) return +1;
* Clock tick wait function *
*************************************************/
+#ifdef _POSIX_MONOTONIC_CLOCK
+/* Amount CLOCK_MONOTONIC is behind realtime, at startup. */
+static struct timespec offset_ts;
+
+static void
+exim_clock_init(void)
+{
+struct timeval tv;
+if (clock_gettime(CLOCK_MONOTONIC, &offset_ts) != 0) return;
+(void)gettimeofday(&tv, NULL);
+offset_ts.tv_sec = tv.tv_sec - offset_ts.tv_sec;
+offset_ts.tv_nsec = tv.tv_usec * 1000 - offset_ts.tv_nsec;
+if (offset_ts.tv_nsec >= 0) return;
+offset_ts.tv_sec--;
+offset_ts.tv_nsec += 1000*1000*1000;
+}
+#endif
+
+
/* Exim uses a time + a pid to generate a unique identifier in two places: its
message IDs, and in file names for maildir deliveries. Because some OS now
re-use pids within the same second, sub-second times are now being used.
-However, for absolute certaintly, we must ensure the clock has ticked before
+However, for absolute certainty, we must ensure the clock has ticked before
allowing the relevant process to complete. At the time of implementation of
this code (February 2003), the speed of processors is such that the clock will
invariably have ticked already by the time a process has done its job. This
clocks that go backwards.
Arguments:
- then_tv A timeval which was used to create uniqueness; its usec field
+ tgt_tv A timeval which was used to create uniqueness; its usec field
has been rounded down to the value of the resolution.
We want to be sure the current time is greater than this.
resolution The resolution that was used to divide the microseconds
*/
void
-exim_wait_tick(struct timeval *then_tv, int resolution)
+exim_wait_tick(struct timeval * tgt_tv, int resolution)
{
struct timeval now_tv;
long int now_true_usec;
-(void)gettimeofday(&now_tv, NULL);
-now_true_usec = now_tv.tv_usec;
-now_tv.tv_usec = (now_true_usec/resolution) * resolution;
+#ifdef _POSIX_MONOTONIC_CLOCK
+struct timespec now_ts;
+
+if (clock_gettime(CLOCK_MONOTONIC, &now_ts) == 0)
+ {
+ now_ts.tv_sec += offset_ts.tv_sec;
+ if ((now_ts.tv_nsec += offset_ts.tv_nsec) >= 1000*1000*1000)
+ {
+ now_ts.tv_sec++;
+ now_ts.tv_nsec -= 1000*1000*1000;
+ }
+ now_tv.tv_sec = now_ts.tv_sec;
+ now_true_usec = (now_ts.tv_nsec / (resolution * 1000)) * resolution;
+ now_tv.tv_usec = now_true_usec;
+ }
+else
+#endif
+ {
+ (void)gettimeofday(&now_tv, NULL);
+ now_true_usec = now_tv.tv_usec;
+ now_tv.tv_usec = (now_true_usec/resolution) * resolution;
+ }
-if (exim_tvcmp(&now_tv, then_tv) <= 0)
+while (exim_tvcmp(&now_tv, tgt_tv) <= 0)
{
struct itimerval itval;
itval.it_interval.tv_sec = 0;
itval.it_interval.tv_usec = 0;
- itval.it_value.tv_sec = then_tv->tv_sec - now_tv.tv_sec;
- itval.it_value.tv_usec = then_tv->tv_usec + resolution - now_true_usec;
+ itval.it_value.tv_sec = tgt_tv->tv_sec - now_tv.tv_sec;
+ itval.it_value.tv_usec = tgt_tv->tv_usec + resolution - now_true_usec;
/* We know that, overall, "now" is less than or equal to "then". Therefore, a
negative value for the microseconds is possible only in the case when "now"
- is more than a second less than "then". That means that itval.it_value.tv_sec
+ is more than a second less than "tgt". That means that itval.it_value.tv_sec
is greater than zero. The following correction is therefore safe. */
if (itval.it_value.tv_usec < 0)
DEBUG(D_transport|D_receive)
{
- if (!running_in_test_harness)
+ if (!f.running_in_test_harness)
{
- debug_printf("tick check: %lu.%06lu %lu.%06lu\n",
- then_tv->tv_sec, then_tv->tv_usec, now_tv.tv_sec, now_tv.tv_usec);
- debug_printf("waiting %lu.%06lu\n", itval.it_value.tv_sec,
- itval.it_value.tv_usec);
+ debug_printf("tick check: " TIME_T_FMT ".%06lu " TIME_T_FMT ".%06lu\n",
+ tgt_tv->tv_sec, (long) tgt_tv->tv_usec,
+ now_tv.tv_sec, (long) now_tv.tv_usec);
+ debug_printf("waiting " TIME_T_FMT ".%06lu sec\n",
+ itval.it_value.tv_sec, (long) itval.it_value.tv_usec);
}
}
milliwait(&itval);
- }
-}
-
-
+ /* Be prapared to go around if the kernel does not implement subtick
+ granularity (GNU Hurd) */
-/*************************************************
-* Set up processing details *
-*************************************************/
-
-/* Save a text string for dumping when SIGUSR1 is received.
-Do checks for overruns.
-
-Arguments: format and arguments, as for printf()
-Returns: nothing
-*/
-
-void
-set_process_info(char *format, ...)
-{
-int len;
-va_list ap;
-sprintf(CS process_info, "%5d ", (int)getpid());
-len = Ustrlen(process_info);
-va_start(ap, format);
-if (!string_vformat(process_info + len, PROCESS_INFO_SIZE - len, format, ap))
- Ustrcpy(process_info + len, "**** string overflowed buffer ****");
-DEBUG(D_process_info) debug_printf("set_process_info: %s\n", process_info);
-va_end(ap);
+ (void)gettimeofday(&now_tv, NULL);
+ now_true_usec = now_tv.tv_usec;
+ now_tv.tv_usec = (now_true_usec/resolution) * resolution;
+ }
}
-
/*************************************************
* Call fopen() with umask 777 and adjust mode *
*************************************************/
*/
FILE *
-modefopen(uschar *filename, char *options, mode_t mode)
+modefopen(const uschar *filename, const char *options, mode_t mode)
{
mode_t saved_umask = umask(0777);
FILE *f = Ufopen(filename, options);
}
-
-
/*************************************************
* Ensure stdin, stdout, and stderr exist *
*************************************************/
void
exim_nullstd(void)
{
-int i;
int devnull = -1;
struct stat statbuf;
-for (i = 0; i <= 2; i++)
+for (int i = 0; i <= 2; i++)
{
if (fstat(i, &statbuf) < 0 && errno == EBADF)
{
if (devnull < 0) devnull = open("/dev/null", O_RDWR);
if (devnull < 0) log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s",
- string_open_failed(errno, "/dev/null"));
+ string_open_failed(errno, "/dev/null", NULL));
if (devnull != i) (void)dup2(devnull, i);
}
}
{
if (smtp_input)
{
- #ifdef SUPPORT_TLS
- tls_close(FALSE); /* Shut down the TLS library */
- #endif
+#ifndef DISABLE_TLS
+ tls_close(NULL, TLS_NO_SHUTDOWN); /* Shut down the TLS library */
+#endif
(void)close(fileno(smtp_in));
(void)close(fileno(smtp_out));
smtp_in = NULL;
if ((debug_selector & D_resolver) == 0) (void)close(1); /* stdout */
if (debug_selector == 0) /* stderr */
{
- if (!synchronous_delivery)
+ if (!f.synchronous_delivery)
{
(void)close(2);
log_stderr = NULL;
if (igflag)
{
struct passwd *pw = getpwuid(uid);
- if (pw != NULL)
- {
- if (initgroups(pw->pw_name, gid) != 0)
- log_write(0,LOG_MAIN|LOG_PANIC_DIE,"initgroups failed for uid=%ld: %s",
- (long int)uid, strerror(errno));
- }
- else log_write(0, LOG_MAIN|LOG_PANIC_DIE, "cannot run initgroups(): "
- "no passwd entry for uid=%ld", (long int)uid);
+ if (!pw)
+ log_write(0, LOG_MAIN|LOG_PANIC_DIE, "cannot run initgroups(): "
+ "no passwd entry for uid=%ld", (long int)uid);
+
+ if (initgroups(pw->pw_name, gid) != 0)
+ log_write(0,LOG_MAIN|LOG_PANIC_DIE,"initgroups failed for uid=%ld: %s",
+ (long int)uid, strerror(errno));
}
if (setgid(gid) < 0 || setuid(uid) < 0)
- {
log_write(0, LOG_MAIN|LOG_PANIC_DIE, "unable to set gid=%ld or uid=%ld "
"(euid=%ld): %s", (long int)gid, (long int)uid, (long int)euid, msg);
- }
}
/* Debugging output included uid/gid and all groups */
DEBUG(D_uid)
{
- int group_count;
- gid_t group_list[NGROUPS_MAX];
+ int group_count, save_errno;
+ gid_t group_list[EXIM_GROUPLIST_SIZE];
debug_printf("changed uid/gid: %s\n uid=%ld gid=%ld pid=%ld\n", msg,
(long int)geteuid(), (long int)getegid(), (long int)getpid());
- group_count = getgroups(NGROUPS_MAX, group_list);
+ group_count = getgroups(nelem(group_list), group_list);
+ save_errno = errno;
debug_printf(" auxiliary group list:");
if (group_count > 0)
- {
- int i;
- for (i = 0; i < group_count; i++) debug_printf(" %d", (int)group_list[i]);
- }
+ for (int i = 0; i < group_count; i++) debug_printf(" %d", (int)group_list[i]);
+ else if (group_count < 0)
+ debug_printf(" <error: %s>", strerror(save_errno));
else debug_printf(" <none>");
debug_printf("\n");
}
*/
void
-exim_exit(int rc)
+exim_exit(int rc, const uschar * process)
{
search_tidyup();
+store_exit();
DEBUG(D_any)
- debug_printf(">>>>>>>>>>>>>>>> Exim pid=%d terminating with rc=%d "
- ">>>>>>>>>>>>>>>>\n", (int)getpid(), rc);
+ debug_printf(">>>>>>>>>>>>>>>> Exim pid=%d %s%s%sterminating with rc=%d "
+ ">>>>>>>>>>>>>>>>\n", (int)getpid(),
+ process ? "(" : "", process, process ? ") " : "", rc);
exit(rc);
}
+void
+exim_underbar_exit(int rc)
+{
+store_exit();
+_exit(rc);
+}
+
+
+
+/* Print error string, then die */
+static void
+exim_fail(const char * fmt, ...)
+{
+va_list ap;
+va_start(ap, fmt);
+vfprintf(stderr, fmt, ap);
+exit(EXIT_FAILURE);
+}
+
+/* exim_chown_failure() called from exim_chown()/exim_fchown() on failure
+of chown()/fchown(). See src/functions.h for more explanation */
+int
+exim_chown_failure(int fd, const uschar *name, uid_t owner, gid_t group)
+{
+int saved_errno = errno; /* from the preceeding chown call */
+#if 1
+log_write(0, LOG_MAIN|LOG_PANIC,
+ __FILE__ ":%d: chown(%s, %d:%d) failed (%s)."
+ " Please contact the authors and refer to https://bugs.exim.org/show_bug.cgi?id=2391",
+ __LINE__, name?name:US"<unknown>", owner, group, strerror(errno));
+#else
+/* I leave this here, commented, in case the "bug"(?) comes up again.
+ It is not an Exim bug, but we can provide a workaround.
+ See Bug 2391
+ HS 2019-04-18 */
+
+struct stat buf;
+
+if (0 == (fd < 0 ? stat(name, &buf) : fstat(fd, &buf)))
+{
+ if (buf.st_uid == owner && buf.st_gid == group) return 0;
+ log_write(0, LOG_MAIN|LOG_PANIC, "Wrong ownership on %s", name);
+}
+else log_write(0, LOG_MAIN|LOG_PANIC, "Stat failed on %s: %s", name, strerror(errno));
+
+#endif
+errno = saved_errno;
+return -1;
+}
/*************************************************
{
int port = host_address_extract_port(address);
if (string_is_ip_address(address, NULL) == 0)
- {
- fprintf(stderr, "exim abandoned: \"%s\" is not an IP address\n", address);
- exit(EXIT_FAILURE);
- }
+ exim_fail("exim abandoned: \"%s\" is not an IP address\n", address);
return port;
}
/*************************************************
-* Decode bit settings for log/debug *
+* Show supported features *
*************************************************/
-/* This function decodes a string containing bit settings in the form of +name
-and/or -name sequences, and sets/unsets bits in a bit string accordingly. It
-also recognizes a numeric setting of the form =<number>, but this is not
-intended for user use. It's an easy way for Exim to pass the debug settings
-when it is re-exec'ed.
-
-The log options are held in two unsigned ints (because there became too many
-for one). The top bit in the table means "put in 2nd selector". This does not
-yet apply to debug options, so the "=" facility sets only the first selector.
-
-The "all" selector, which must be equal to 0xffffffff, is recognized specially.
-It sets all the bits in both selectors. However, there is a facility for then
-unsetting certain bits, because we want to turn off "memory" in the debug case.
-
-A bad value for a debug setting is treated as an unknown option - error message
-to stderr and die. For log settings, which come from the configuration file,
-we write to the log on the way out...
-
-Arguments:
- selector1 address of the first bit string
- selector2 address of the second bit string, or NULL
- notall1 bits to exclude from "all" for selector1
- notall2 bits to exclude from "all" for selector2
- string the configured string
- options the table of option names
- count size of table
- which "log" or "debug"
-
-Returns: nothing on success - bomb out on failure
-*/
-
static void
-decode_bits(unsigned int *selector1, unsigned int *selector2, int notall1,
- int notall2, uschar *string, bit_table *options, int count, uschar *which)
+show_db_version(FILE * f)
{
-uschar *errmsg;
-if (string == NULL) return;
-
-if (*string == '=')
- {
- char *end; /* Not uschar */
- *selector1 = strtoul(CS string+1, &end, 0);
- if (*end == 0) return;
- errmsg = string_sprintf("malformed numeric %s_selector setting: %s", which,
- string);
- goto ERROR_RETURN;
- }
-
-/* Handle symbolic setting */
-
-else for(;;)
- {
- BOOL adding;
- uschar *s;
- int len;
- bit_table *start, *end;
-
- while (isspace(*string)) string++;
- if (*string == 0) return;
-
- if (*string != '+' && *string != '-')
- {
- errmsg = string_sprintf("malformed %s_selector setting: "
- "+ or - expected but found \"%s\"", which, string);
- goto ERROR_RETURN;
- }
-
- adding = *string++ == '+';
- s = string;
- while (isalnum(*string) || *string == '_') string++;
- len = string - s;
-
- start = options;
- end = options + count;
-
- while (start < end)
- {
- bit_table *middle = start + (end - start)/2;
- int c = Ustrncmp(s, middle->name, len);
- if (c == 0)
- {
- if (middle->name[len] != 0) c = -1; else
- {
- unsigned int bit = middle->bit;
- unsigned int *selector;
-
- /* The value with all bits set means "force all bits in both selectors"
- in the case where two are being handled. However, the top bit in the
- second selector is never set. When setting, some bits can be excluded.
- */
-
- if (bit == 0xffffffff)
- {
- if (adding)
- {
- *selector1 = 0xffffffff ^ notall1;
- if (selector2 != NULL) *selector2 = 0x7fffffff ^ notall2;
- }
- else
- {
- *selector1 = 0;
- if (selector2 != NULL) *selector2 = 0;
- }
- }
-
- /* Otherwise, the 0x80000000 bit means "this value, without the top
- bit, belongs in the second selector". */
-
- else
- {
- if ((bit & 0x80000000) != 0)
- {
- selector = selector2;
- bit &= 0x7fffffff;
- }
- else selector = selector1;
- if (adding) *selector |= bit; else *selector &= ~bit;
- }
- break; /* Out of loop to match selector name */
- }
- }
- if (c < 0) end = middle; else start = middle + 1;
- } /* Loop to match selector name */
-
- if (start >= end)
- {
- errmsg = string_sprintf("unknown %s_selector setting: %c%.*s", which,
- adding? '+' : '-', len, s);
- goto ERROR_RETURN;
- }
- } /* Loop for selector names */
-
-/* Handle disasters */
-
-ERROR_RETURN:
-if (Ustrcmp(which, "debug") == 0)
+#ifdef DB_VERSION_STRING
+DEBUG(D_any)
{
- fprintf(stderr, "exim: %s\n", errmsg);
- exit(EXIT_FAILURE);
+ fprintf(f, "Library version: BDB: Compile: %s\n", DB_VERSION_STRING);
+ fprintf(f, " Runtime: %s\n",
+ db_version(NULL, NULL, NULL));
}
-else log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "%s", errmsg);
-}
-
-
-
-/*************************************************
-* Show supported features *
-*************************************************/
-
-/* This function is called for -bV and for -d to output the optional features
-of the current Exim binary.
-
-Arguments: a FILE for printing
-Returns: nothing
-*/
+else
+ fprintf(f, "Berkeley DB: %s\n", DB_VERSION_STRING);
-static void
-show_whats_supported(FILE *f)
-{
-#ifdef DB_VERSION_STRING
-fprintf(f, "Berkeley DB: %s\n", DB_VERSION_STRING);
#elif defined(BTREEVERSION) && defined(HASHVERSION)
#ifdef USE_DB
fprintf(f, "Probably Berkeley DB version 1.8x (native mode)\n");
#else
fprintf(f, "Probably Berkeley DB version 1.8x (compatibility mode)\n");
#endif
+
#elif defined(_DBM_RDONLY) || defined(dbm_dirfno)
fprintf(f, "Probably ndbm\n");
#elif defined(USE_TDB)
fprintf(f, "Probably GDBM (compatibility mode)\n");
#endif
#endif
+}
+
+
+/* This function is called for -bV/--version and for -d to output the optional
+features of the current Exim binary.
-fprintf(f, "Support for:");
+Arguments: a FILE for printing
+Returns: nothing
+*/
+
+static void
+show_whats_supported(FILE * fp)
+{
+DEBUG(D_any) {} else show_db_version(fp);
+
+fprintf(fp, "Support for:");
#ifdef SUPPORT_CRYPTEQ
- fprintf(f, " crypteq");
+ fprintf(fp, " crypteq");
#endif
#if HAVE_ICONV
- fprintf(f, " iconv()");
+ fprintf(fp, " iconv()");
#endif
#if HAVE_IPV6
- fprintf(f, " IPv6");
+ fprintf(fp, " IPv6");
#endif
#ifdef HAVE_SETCLASSRESOURCES
- fprintf(f, " use_setclassresources");
+ fprintf(fp, " use_setclassresources");
#endif
#ifdef SUPPORT_PAM
- fprintf(f, " PAM");
+ fprintf(fp, " PAM");
#endif
#ifdef EXIM_PERL
- fprintf(f, " Perl");
+ fprintf(fp, " Perl");
#endif
#ifdef EXPAND_DLFUNC
- fprintf(f, " Expand_dlfunc");
+ fprintf(fp, " Expand_dlfunc");
#endif
#ifdef USE_TCP_WRAPPERS
- fprintf(f, " TCPwrappers");
+ fprintf(fp, " TCPwrappers");
#endif
-#ifdef SUPPORT_TLS
- #ifdef USE_GNUTLS
- fprintf(f, " GnuTLS");
- #else
- fprintf(f, " OpenSSL");
- #endif
+#ifdef USE_GNUTLS
+ fprintf(fp, " GnuTLS");
+#endif
+#ifdef USE_OPENSSL
+ fprintf(fp, " OpenSSL");
#endif
#ifdef SUPPORT_TRANSLATE_IP_ADDRESS
- fprintf(f, " translate_ip_address");
+ fprintf(fp, " translate_ip_address");
#endif
#ifdef SUPPORT_MOVE_FROZEN_MESSAGES
- fprintf(f, " move_frozen_messages");
+ fprintf(fp, " move_frozen_messages");
#endif
#ifdef WITH_CONTENT_SCAN
- fprintf(f, " Content_Scanning");
+ fprintf(fp, " Content_Scanning");
#endif
-#ifdef WITH_OLD_DEMIME
- fprintf(f, " Old_Demime");
+#ifdef SUPPORT_DANE
+ fprintf(fp, " DANE");
#endif
-#ifdef EXPERIMENTAL_SPF
- fprintf(f, " Experimental_SPF");
+#ifndef DISABLE_DKIM
+ fprintf(fp, " DKIM");
#endif
-#ifdef EXPERIMENTAL_SRS
- fprintf(f, " Experimental_SRS");
+#ifndef DISABLE_DNSSEC
+ fprintf(fp, " DNSSEC");
#endif
-#ifdef EXPERIMENTAL_BRIGHTMAIL
- fprintf(f, " Experimental_Brightmail");
+#ifndef DISABLE_EVENT
+ fprintf(fp, " Event");
#endif
-#ifdef EXPERIMENTAL_DOMAINKEYS
- fprintf(f, " Experimental_DomainKeys");
+#ifdef SUPPORT_I18N
+ fprintf(fp, " I18N");
#endif
-fprintf(f, "\n");
-
-fprintf(f, "Lookups:");
-#ifdef LOOKUP_LSEARCH
- fprintf(f, " lsearch wildlsearch nwildlsearch iplsearch");
+#ifndef DISABLE_OCSP
+ fprintf(fp, " OCSP");
#endif
-#ifdef LOOKUP_CDB
- fprintf(f, " cdb");
+#ifndef DISABLE_PIPE_CONNECT
+ fprintf(fp, " PIPE_CONNECT");
#endif
-#ifdef LOOKUP_DBM
- fprintf(f, " dbm dbmnz");
+#ifndef DISABLE_PRDR
+ fprintf(fp, " PRDR");
#endif
-#ifdef LOOKUP_DNSDB
- fprintf(f, " dnsdb");
+#ifdef SUPPORT_PROXY
+ fprintf(fp, " PROXY");
#endif
-#ifdef LOOKUP_DSEARCH
- fprintf(f, " dsearch");
+#ifdef SUPPORT_SOCKS
+ fprintf(fp, " SOCKS");
#endif
-#ifdef LOOKUP_IBASE
- fprintf(f, " ibase");
+#ifdef SUPPORT_SPF
+ fprintf(fp, " SPF");
#endif
-#ifdef LOOKUP_LDAP
- fprintf(f, " ldap ldapdn ldapm");
+#ifdef SUPPORT_DMARC
+ fprintf(fp, " DMARC");
#endif
-#ifdef LOOKUP_MYSQL
- fprintf(f, " mysql");
+#ifdef TCP_FASTOPEN
+ tcp_init();
+ if (f.tcp_fastopen_ok) fprintf(fp, " TCP_Fast_Open");
#endif
-#ifdef LOOKUP_NIS
- fprintf(f, " nis nis0");
+#ifdef EXPERIMENTAL_LMDB
+ fprintf(fp, " Experimental_LMDB");
#endif
-#ifdef LOOKUP_NISPLUS
- fprintf(f, " nisplus");
+#ifdef EXPERIMENTAL_QUEUEFILE
+ fprintf(fp, " Experimental_QUEUEFILE");
#endif
-#ifdef LOOKUP_ORACLE
- fprintf(f, " oracle");
+#if defined(EXPERIMENTAL_SRS) || defined(EXPERIMENTAL_SRS_NATIVE)
+ fprintf(fp, " Experimental_SRS");
#endif
-#ifdef LOOKUP_PASSWD
- fprintf(f, " passwd");
+#ifdef EXPERIMENTAL_ARC
+ fprintf(fp, " Experimental_ARC");
#endif
-#ifdef LOOKUP_PGSQL
- fprintf(f, " pgsql");
+#ifdef EXPERIMENTAL_BRIGHTMAIL
+ fprintf(fp, " Experimental_Brightmail");
#endif
-#ifdef LOOKUP_SQLITE
- fprintf(f, " sqlite");
+#ifdef EXPERIMENTAL_DCC
+ fprintf(fp, " Experimental_DCC");
#endif
-#ifdef LOOKUP_TESTDB
- fprintf(f, " testdb");
+#ifdef EXPERIMENTAL_DSN_INFO
+ fprintf(fp, " Experimental_DSN_info");
#endif
-#ifdef LOOKUP_WHOSON
- fprintf(f, " whoson");
+#ifdef EXPERIMENTAL_TLS_RESUME
+ fprintf(fp, " Experimental_TLS_resume");
#endif
-fprintf(f, "\n");
+fprintf(fp, "\n");
-fprintf(f, "Authenticators:");
-#ifdef AUTH_CRAM_MD5
- fprintf(f, " cram_md5");
+fprintf(fp, "Lookups (built-in):");
+#if defined(LOOKUP_LSEARCH) && LOOKUP_LSEARCH!=2
+ fprintf(fp, " lsearch wildlsearch nwildlsearch iplsearch");
#endif
-#ifdef AUTH_CYRUS_SASL
- fprintf(f, " cyrus_sasl");
+#if defined(LOOKUP_CDB) && LOOKUP_CDB!=2
+ fprintf(fp, " cdb");
#endif
-#ifdef AUTH_DOVECOT
- fprintf(f, " dovecot");
+#if defined(LOOKUP_DBM) && LOOKUP_DBM!=2
+ fprintf(fp, " dbm dbmjz dbmnz");
#endif
-#ifdef AUTH_PLAINTEXT
- fprintf(f, " plaintext");
+#if defined(LOOKUP_DNSDB) && LOOKUP_DNSDB!=2
+ fprintf(fp, " dnsdb");
#endif
-#ifdef AUTH_SPA
- fprintf(f, " spa");
+#if defined(LOOKUP_DSEARCH) && LOOKUP_DSEARCH!=2
+ fprintf(fp, " dsearch");
#endif
-fprintf(f, "\n");
-
-fprintf(f, "Routers:");
-#ifdef ROUTER_ACCEPT
- fprintf(f, " accept");
+#if defined(LOOKUP_IBASE) && LOOKUP_IBASE!=2
+ fprintf(fp, " ibase");
#endif
-#ifdef ROUTER_DNSLOOKUP
- fprintf(f, " dnslookup");
+#if defined(LOOKUP_JSON) && LOOKUP_JSON!=2
+ fprintf(fp, " json");
#endif
-#ifdef ROUTER_IPLITERAL
- fprintf(f, " ipliteral");
+#if defined(LOOKUP_LDAP) && LOOKUP_LDAP!=2
+ fprintf(fp, " ldap ldapdn ldapm");
#endif
-#ifdef ROUTER_IPLOOKUP
- fprintf(f, " iplookup");
+#ifdef EXPERIMENTAL_LMDB
+ fprintf(fp, " lmdb");
#endif
-#ifdef ROUTER_MANUALROUTE
- fprintf(f, " manualroute");
+#if defined(LOOKUP_MYSQL) && LOOKUP_MYSQL!=2
+ fprintf(fp, " mysql");
#endif
-#ifdef ROUTER_QUERYPROGRAM
- fprintf(f, " queryprogram");
+#if defined(LOOKUP_NIS) && LOOKUP_NIS!=2
+ fprintf(fp, " nis nis0");
#endif
-#ifdef ROUTER_REDIRECT
- fprintf(f, " redirect");
+#if defined(LOOKUP_NISPLUS) && LOOKUP_NISPLUS!=2
+ fprintf(fp, " nisplus");
#endif
-fprintf(f, "\n");
-
-fprintf(f, "Transports:");
-#ifdef TRANSPORT_APPENDFILE
- fprintf(f, " appendfile");
- #ifdef SUPPORT_MAILDIR
- fprintf(f, "/maildir");
- #endif
- #ifdef SUPPORT_MAILSTORE
- fprintf(f, "/mailstore");
- #endif
- #ifdef SUPPORT_MBX
- fprintf(f, "/mbx");
- #endif
+#if defined(LOOKUP_ORACLE) && LOOKUP_ORACLE!=2
+ fprintf(fp, " oracle");
+#endif
+#if defined(LOOKUP_PASSWD) && LOOKUP_PASSWD!=2
+ fprintf(fp, " passwd");
#endif
-#ifdef TRANSPORT_AUTOREPLY
- fprintf(f, " autoreply");
+#if defined(LOOKUP_PGSQL) && LOOKUP_PGSQL!=2
+ fprintf(fp, " pgsql");
#endif
-#ifdef TRANSPORT_LMTP
- fprintf(f, " lmtp");
+#if defined(LOOKUP_REDIS) && LOOKUP_REDIS!=2
+ fprintf(fp, " redis");
#endif
-#ifdef TRANSPORT_PIPE
- fprintf(f, " pipe");
+#if defined(LOOKUP_SQLITE) && LOOKUP_SQLITE!=2
+ fprintf(fp, " sqlite");
#endif
-#ifdef TRANSPORT_SMTP
- fprintf(f, " smtp");
+#if defined(LOOKUP_TESTDB) && LOOKUP_TESTDB!=2
+ fprintf(fp, " testdb");
+#endif
+#if defined(LOOKUP_WHOSON) && LOOKUP_WHOSON!=2
+ fprintf(fp, " whoson");
+#endif
+fprintf(fp, "\n");
+
+auth_show_supported(fp);
+route_show_supported(fp);
+transport_show_supported(fp);
+
+#ifdef WITH_CONTENT_SCAN
+malware_show_supported(fp);
#endif
-fprintf(f, "\n");
if (fixed_never_users[0] > 0)
{
int i;
- fprintf(f, "Fixed never_users: ");
+ fprintf(fp, "Fixed never_users: ");
for (i = 1; i <= (int)fixed_never_users[0] - 1; i++)
- fprintf(f, "%d:", (unsigned int)fixed_never_users[i]);
- fprintf(f, "%d\n", (unsigned int)fixed_never_users[i]);
+ fprintf(fp, "%d:", (unsigned int)fixed_never_users[i]);
+ fprintf(fp, "%d\n", (unsigned int)fixed_never_users[i]);
}
-fprintf(f, "Size of off_t: %d\n", sizeof(off_t));
+fprintf(fp, "Configure owner: %d:%d\n", config_uid, config_gid);
+
+fprintf(fp, "Size of off_t: " SIZE_T_FMT "\n", sizeof(off_t));
+
+/* Everything else is details which are only worth reporting when debugging.
+Perhaps the tls_version_report should move into this too. */
+DEBUG(D_any) do {
+
+/* clang defines __GNUC__ (at least, for me) so test for it first */
+#if defined(__clang__)
+ fprintf(fp, "Compiler: CLang [%s]\n", __clang_version__);
+#elif defined(__GNUC__)
+ fprintf(fp, "Compiler: GCC [%s]\n",
+# ifdef __VERSION__
+ __VERSION__
+# else
+ "? unknown version ?"
+# endif
+ );
+#else
+ fprintf(fp, "Compiler: <unknown>\n");
+#endif
+
+#if defined(__GLIBC__) && !defined(__UCLIBC__)
+ fprintf(fp, "Library version: Glibc: Compile: %d.%d\n",
+ __GLIBC__, __GLIBC_MINOR__);
+ if (__GLIBC_PREREQ(2, 1))
+ fprintf(fp, " Runtime: %s\n",
+ gnu_get_libc_version());
+#endif
+
+show_db_version(fp);
+
+#ifndef DISABLE_TLS
+ tls_version_report(fp);
+#endif
+#ifdef SUPPORT_I18N
+ utf8_version_report(fp);
+#endif
+#ifdef SUPPORT_SPF
+ spf_lib_version_report(fp);
+#endif
+
+ for (auth_info * authi = auths_available; *authi->driver_name != '\0'; ++authi)
+ if (authi->version_report)
+ (*authi->version_report)(fp);
+
+ /* PCRE_PRERELEASE is either defined and empty or a bare sequence of
+ characters; unless it's an ancient version of PCRE in which case it
+ is not defined. */
+#ifndef PCRE_PRERELEASE
+# define PCRE_PRERELEASE
+#endif
+#define QUOTE(X) #X
+#define EXPAND_AND_QUOTE(X) QUOTE(X)
+ fprintf(fp, "Library version: PCRE: Compile: %d.%d%s\n"
+ " Runtime: %s\n",
+ PCRE_MAJOR, PCRE_MINOR,
+ EXPAND_AND_QUOTE(PCRE_PRERELEASE) "",
+ pcre_version());
+#undef QUOTE
+#undef EXPAND_AND_QUOTE
+
+ init_lookup_list();
+ for (int i = 0; i < lookup_list_count; i++)
+ if (lookup_list[i]->version_report)
+ lookup_list[i]->version_report(fp);
+
+#ifdef WHITELIST_D_MACROS
+ fprintf(fp, "WHITELIST_D_MACROS: \"%s\"\n", WHITELIST_D_MACROS);
+#else
+ fprintf(fp, "WHITELIST_D_MACROS unset\n");
+#endif
+#ifdef TRUSTED_CONFIG_LIST
+ fprintf(fp, "TRUSTED_CONFIG_LIST: \"%s\"\n", TRUSTED_CONFIG_LIST);
+#else
+ fprintf(fp, "TRUSTED_CONFIG_LIST unset\n");
+#endif
+
+} while (0);
}
+/*************************************************
+* Show auxiliary information about Exim *
+*************************************************/
+
+static void
+show_exim_information(enum commandline_info request, FILE *stream)
+{
+switch(request)
+ {
+ case CMDINFO_NONE:
+ fprintf(stream, "Oops, something went wrong.\n");
+ return;
+ case CMDINFO_HELP:
+ fprintf(stream,
+"The -bI: flag takes a string indicating which information to provide.\n"
+"If the string is not recognised, you'll get this help (on stderr).\n"
+"\n"
+" exim -bI:help this information\n"
+" exim -bI:dscp list of known dscp value keywords\n"
+" exim -bI:sieve list of supported sieve extensions\n"
+);
+ return;
+ case CMDINFO_SIEVE:
+ for (const uschar ** pp = exim_sieve_extension_list; *pp; ++pp)
+ fprintf(stream, "%s\n", *pp);
+ return;
+ case CMDINFO_DSCP:
+ dscp_list_to_stream(stream);
+ return;
+ }
+}
/*************************************************
local_part_quote(uschar *lpart)
{
BOOL needs_quote = FALSE;
-int size, ptr;
-uschar *yield;
-uschar *t;
+gstring * g;
-for (t = lpart; !needs_quote && *t != 0; t++)
+for (uschar * t = lpart; !needs_quote && *t != 0; t++)
{
needs_quote = !isalnum(*t) && strchr("!#$%&'*+-/=?^_`{|}~", *t) == NULL &&
(*t != '.' || t == lpart || t[1] == 0);
if (!needs_quote) return lpart;
-size = ptr = 0;
-yield = string_cat(NULL, &size, &ptr, US"\"", 1);
+g = string_catn(NULL, US"\"", 1);
for (;;)
{
uschar *nq = US Ustrpbrk(lpart, "\\\"");
if (nq == NULL)
{
- yield = string_cat(yield, &size, &ptr, lpart, Ustrlen(lpart));
+ g = string_cat(g, lpart);
break;
}
- yield = string_cat(yield, &size, &ptr, lpart, nq - lpart);
- yield = string_cat(yield, &size, &ptr, US"\\", 1);
- yield = string_cat(yield, &size, &ptr, nq, 1);
+ g = string_catn(g, lpart, nq - lpart);
+ g = string_catn(g, US"\\", 1);
+ g = string_catn(g, nq, 1);
lpart = nq + 1;
}
-yield = string_cat(yield, &size, &ptr, US"\"", 1);
-yield[ptr] = 0;
-return yield;
+g = string_catn(g, US"\"", 1);
+return string_from_gstring(g);
}
*/
static void *
-set_readline(char * (**fn_readline_ptr)(char *),
- char * (**fn_addhist_ptr)(char *))
+set_readline(char * (**fn_readline_ptr)(const char *),
+ void (**fn_addhist_ptr)(const char *))
{
void *dlhandle;
-void *dlhandle_curses = dlopen("libcurses.so", RTLD_GLOBAL|RTLD_LAZY);
+void *dlhandle_curses = dlopen("libcurses." DYNLIB_FN_EXT, RTLD_GLOBAL|RTLD_LAZY);
-dlhandle = dlopen("libreadline.so", RTLD_GLOBAL|RTLD_NOW);
-if (dlhandle_curses != NULL) dlclose(dlhandle_curses);
+dlhandle = dlopen("libreadline." DYNLIB_FN_EXT, RTLD_GLOBAL|RTLD_NOW);
+if (dlhandle_curses) dlclose(dlhandle_curses);
-if (dlhandle != NULL)
+if (dlhandle)
{
- *fn_readline_ptr = (char *(*)(char*))dlsym(dlhandle, "readline");
- *fn_addhist_ptr = (char *(*)(char*))dlsym(dlhandle, "add_history");
+ /* Checked manual pages; at least in GNU Readline 6.1, the prototypes are:
+ * char * readline (const char *prompt);
+ * void add_history (const char *string);
+ */
+ *fn_readline_ptr = (char *(*)(const char*))dlsym(dlhandle, "readline");
+ *fn_addhist_ptr = (void(*)(const char*))dlsym(dlhandle, "add_history");
}
else
- {
DEBUG(D_any) debug_printf("failed to load readline: %s\n", dlerror());
- }
return dlhandle;
}
*/
static uschar *
-get_stdinput(char *(*fn_readline)(char *), char *(*fn_addhist)(char *))
+get_stdinput(char *(*fn_readline)(const char *), void(*fn_addhist)(const char *))
{
-int i;
-int size = 0;
-int ptr = 0;
-uschar *yield = NULL;
+gstring * g = NULL;
-if (fn_readline == NULL) { printf("> "); fflush(stdout); }
+if (!fn_readline) { printf("> "); fflush(stdout); }
-for (i = 0;; i++)
+for (int i = 0;; i++)
{
uschar buffer[1024];
uschar *p, *ss;
#ifdef USE_READLINE
char *readline_line = NULL;
- if (fn_readline != NULL)
+ if (fn_readline)
{
- if ((readline_line = fn_readline((i > 0)? "":"> ")) == NULL) break;
- if (*readline_line != 0 && fn_addhist != NULL) fn_addhist(readline_line);
+ if (!(readline_line = fn_readline((i > 0)? "":"> "))) break;
+ if (*readline_line != 0 && fn_addhist) fn_addhist(readline_line);
p = US readline_line;
}
else
while (ss > p && isspace(ss[-1])) ss--;
if (i > 0)
- {
while (p < ss && isspace(*p)) p++; /* leading space after cont */
- }
- yield = string_cat(yield, &size, &ptr, p, ss - p);
+ g = string_catn(g, p, ss - p);
#ifdef USE_READLINE
- if (fn_readline != NULL) free(readline_line);
+ if (fn_readline) free(readline_line);
#endif
- if (ss == p || yield[ptr-1] != '\\')
- {
- yield[ptr] = 0;
+ /* g can only be NULL if ss==p */
+ if (ss == p || g->s[g->ptr-1] != '\\')
break;
+
+ --g->ptr;
+ (void) string_from_gstring(g);
+ }
+
+if (!g) printf("\n");
+return string_from_gstring(g);
+}
+
+
+
+/*************************************************
+* Output usage information for the program *
+*************************************************/
+
+/* This function is called when there are no recipients
+ or a specific --help argument was added.
+
+Arguments:
+ progname information on what name we were called by
+
+Returns: DOES NOT RETURN
+*/
+
+static void
+exim_usage(uschar *progname)
+{
+
+/* Handle specific program invocation variants */
+if (Ustrcmp(progname, US"-mailq") == 0)
+ exim_fail(
+ "mailq - list the contents of the mail queue\n\n"
+ "For a list of options, see the Exim documentation.\n");
+
+/* Generic usage - we output this whatever happens */
+exim_fail(
+ "Exim is a Mail Transfer Agent. It is normally called by Mail User Agents,\n"
+ "not directly from a shell command line. Options and/or arguments control\n"
+ "what it does when called. For a list of options, see the Exim documentation.\n");
+}
+
+
+
+/*************************************************
+* Validate that the macros given are okay *
+*************************************************/
+
+/* Typically, Exim will drop privileges if macros are supplied. In some
+cases, we want to not do so.
+
+Arguments: opt_D_used - true if the commandline had a "-D" option
+Returns: true if trusted, false otherwise
+*/
+
+static BOOL
+macros_trusted(BOOL opt_D_used)
+{
+#ifdef WHITELIST_D_MACROS
+uschar *whitelisted, *end, *p, **whites;
+int white_count, i, n;
+size_t len;
+BOOL prev_char_item, found;
+#endif
+
+if (!opt_D_used)
+ return TRUE;
+#ifndef WHITELIST_D_MACROS
+return FALSE;
+#else
+
+/* We only trust -D overrides for some invoking users:
+root, the exim run-time user, the optional config owner user.
+I don't know why config-owner would be needed, but since they can own the
+config files anyway, there's no security risk to letting them override -D. */
+if ( ! ((real_uid == root_uid)
+ || (real_uid == exim_uid)
+#ifdef CONFIGURE_OWNER
+ || (real_uid == config_uid)
+#endif
+ ))
+ {
+ debug_printf("macros_trusted rejecting macros for uid %d\n", (int) real_uid);
+ return FALSE;
+ }
+
+/* Get a list of macros which are whitelisted */
+whitelisted = string_copy_perm(US WHITELIST_D_MACROS, FALSE);
+prev_char_item = FALSE;
+white_count = 0;
+for (p = whitelisted; *p != '\0'; ++p)
+ {
+ if (*p == ':' || isspace(*p))
+ {
+ *p = '\0';
+ if (prev_char_item)
+ ++white_count;
+ prev_char_item = FALSE;
+ continue;
+ }
+ if (!prev_char_item)
+ prev_char_item = TRUE;
+ }
+end = p;
+if (prev_char_item)
+ ++white_count;
+if (!white_count)
+ return FALSE;
+whites = store_malloc(sizeof(uschar *) * (white_count+1));
+for (p = whitelisted, i = 0; (p != end) && (i < white_count); ++p)
+ {
+ if (*p != '\0')
+ {
+ whites[i++] = p;
+ if (i == white_count)
+ break;
+ while (*p != '\0' && p < end)
+ ++p;
}
- yield[--ptr] = 0;
}
+whites[i] = NULL;
-if (yield == NULL) printf("\n");
-return yield;
+/* The list of commandline macros should be very short.
+Accept the N*M complexity. */
+for (macro_item * m = macros_user; m; m = m->next) if (m->command_line)
+ {
+ found = FALSE;
+ for (uschar ** w = whites; *w; ++w)
+ if (Ustrcmp(*w, m->name) == 0)
+ {
+ found = TRUE;
+ break;
+ }
+ if (!found)
+ return FALSE;
+ if (!m->replacement)
+ continue;
+ if ((len = m->replen) == 0)
+ continue;
+ n = pcre_exec(regex_whitelisted_macro, NULL, CS m->replacement, len,
+ 0, PCRE_EOPT, NULL, 0);
+ if (n < 0)
+ {
+ if (n != PCRE_ERROR_NOMATCH)
+ debug_printf("macros_trusted checking %s returned %d\n", m->name, n);
+ return FALSE;
+ }
+ }
+DEBUG(D_any) debug_printf("macros_trusted overridden to true by whitelisting\n");
+return TRUE;
+#endif
+}
+
+
+/*************************************************
+* Expansion testing *
+*************************************************/
+
+/* Expand and print one item, doing macro-processing.
+
+Arguments:
+ item line for expansion
+*/
+
+static void
+expansion_test_line(uschar * line)
+{
+int len;
+BOOL dummy_macexp;
+
+Ustrncpy(big_buffer, line, big_buffer_size);
+big_buffer[big_buffer_size-1] = '\0';
+len = Ustrlen(big_buffer);
+
+(void) macros_expand(0, &len, &dummy_macexp);
+
+if (isupper(big_buffer[0]))
+ {
+ if (macro_read_assignment(big_buffer))
+ printf("Defined macro '%s'\n", mlast->name);
+ }
+else
+ if ((line = expand_string(big_buffer))) printf("%s\n", CS line);
+ else printf("Failed: %s\n", expand_string_message);
}
int filter_sfd = -1;
int filter_ufd = -1;
int group_count;
-int i;
+int i, rv;
int list_queue_option = 0;
int msg_action = 0;
int msg_action_arg = -1;
int sender_address_domain = 0;
int test_retry_arg = -1;
int test_rewrite_arg = -1;
+gid_t original_egid;
BOOL arg_queue_only = FALSE;
BOOL bi_option = FALSE;
BOOL checking = FALSE;
BOOL count_queue = FALSE;
BOOL expansion_test = FALSE;
BOOL extract_recipients = FALSE;
+BOOL flag_G = FALSE;
+BOOL flag_n = FALSE;
BOOL forced_delivery = FALSE;
BOOL f_end_dot = FALSE;
BOOL deliver_give_up = FALSE;
BOOL list_queue = FALSE;
BOOL list_options = FALSE;
+BOOL list_config = FALSE;
BOOL local_queue_only;
BOOL more = TRUE;
BOOL one_msg_action = FALSE;
+BOOL opt_D_used = FALSE;
BOOL queue_only_set = FALSE;
BOOL receiving_message = TRUE;
BOOL sender_ident_set = FALSE;
+BOOL session_local_queue_only;
BOOL unprivileged;
BOOL removed_privilege = FALSE;
+BOOL usage_wanted = FALSE;
BOOL verify_address_mode = FALSE;
BOOL verify_as_sender = FALSE;
BOOL version_printed = FALSE;
uschar *alias_arg = NULL;
uschar *called_as = US"";
+uschar *cmdline_syslog_name = NULL;
uschar *start_queue_run_id = NULL;
uschar *stop_queue_run_id = NULL;
uschar *expansion_test_message = NULL;
uschar *ftest_localpart = NULL;
uschar *ftest_prefix = NULL;
uschar *ftest_suffix = NULL;
+uschar *log_oneline = NULL;
+uschar *malware_test_file = NULL;
uschar *real_sender_address;
uschar *originator_home = US"/";
-void *reset_point;
+size_t sz;
+rmark reset_point;
struct passwd *pw;
struct stat statbuf;
pid_t passed_qr_pid = (pid_t)0;
int passed_qr_pipe = -1;
-gid_t group_list[NGROUPS_MAX];
+gid_t group_list[EXIM_GROUPLIST_SIZE];
+
+/* For the -bI: flag */
+enum commandline_info info_flag = CMDINFO_NONE;
+BOOL info_stdout = FALSE;
/* Possible options for -R and -S */
extern char **environ;
+#ifdef MEASURE_TIMING
+(void)gettimeofday(×tamp_startup, NULL);
+#endif
+
/* If the Exim user and/or group and/or the configuration file owner/group were
defined by ref:name at build time, we must now find the actual uid/gid values.
This is a feature to make the lives of binary distributors easier. */
#ifdef EXIM_USERNAME
if (route_finduser(US EXIM_USERNAME, &pw, &exim_uid))
{
- exim_gid = pw->pw_gid;
+ if (exim_uid == 0)
+ exim_fail("exim: refusing to run with uid 0 for \"%s\"\n", EXIM_USERNAME);
+
+ /* If ref:name uses a number as the name, route_finduser() returns
+ TRUE with exim_uid set and pw coerced to NULL. */
+ if (pw)
+ exim_gid = pw->pw_gid;
+#ifndef EXIM_GROUPNAME
+ else
+ exim_fail(
+ "exim: ref:name should specify a usercode, not a group.\n"
+ "exim: can't let you get away with it unless you also specify a group.\n");
+#endif
}
else
- {
- fprintf(stderr, "exim: failed to find uid for user name \"%s\"\n",
- EXIM_USERNAME);
- exit(EXIT_FAILURE);
- }
+ exim_fail("exim: failed to find uid for user name \"%s\"\n", EXIM_USERNAME);
#endif
#ifdef EXIM_GROUPNAME
if (!route_findgroup(US EXIM_GROUPNAME, &exim_gid))
- {
- fprintf(stderr, "exim: failed to find gid for group name \"%s\"\n",
- EXIM_GROUPNAME);
- exit(EXIT_FAILURE);
- }
+ exim_fail("exim: failed to find gid for group name \"%s\"\n", EXIM_GROUPNAME);
#endif
#ifdef CONFIGURE_OWNERNAME
if (!route_finduser(US CONFIGURE_OWNERNAME, NULL, &config_uid))
- {
- fprintf(stderr, "exim: failed to find uid for user name \"%s\"\n",
+ exim_fail("exim: failed to find uid for user name \"%s\"\n",
CONFIGURE_OWNERNAME);
- exit(EXIT_FAILURE);
- }
#endif
+/* We default the system_filter_user to be the Exim run-time user, as a
+sane non-root value. */
+system_filter_uid = exim_uid;
+
#ifdef CONFIGURE_GROUPNAME
if (!route_findgroup(US CONFIGURE_GROUPNAME, &config_gid))
- {
- fprintf(stderr, "exim: failed to find gid for group name \"%s\"\n",
+ exim_fail("exim: failed to find gid for group name \"%s\"\n",
CONFIGURE_GROUPNAME);
- exit(EXIT_FAILURE);
- }
#endif
-/* In the Cygwin environment, some initialization needs doing. It is fudged
-in by means of this macro. */
+/* In the Cygwin environment, some initialization used to need doing.
+It was fudged in by means of this macro; now no longer but we'll leave
+it in case of others. */
#ifdef OS_INIT
OS_INIT
/* Check a field which is patched when we are running Exim within its
testing harness; do a fast initial check, and then the whole thing. */
-running_in_test_harness =
+f.running_in_test_harness =
*running_status == '<' && Ustrcmp(running_status, "<<<testing>>>") == 0;
+if (f.running_in_test_harness)
+ debug_store = TRUE;
/* The C standard says that the equivalent of setlocale(LC_ALL, "C") is obeyed
at the start of a program; however, it seems that some environments do not
setlocale(LC_ALL, "C");
+/* Get the offset between CLOCK_MONOTONIC and wallclock */
+
+#ifdef _POSIX_MONOTONIC_CLOCK
+exim_clock_init();
+#endif
+
/* Set up the default handler for timing using alarm(). */
os_non_restarting_signal(SIGALRM, sigalrm_handler);
/* Ensure we have a buffer for constructing log entries. Use malloc directly,
because store_malloc writes a log entry on failure. */
-log_buffer = (uschar *)malloc(LOG_BUFFER_SIZE);
-if (log_buffer == NULL)
- {
- fprintf(stderr, "exim: failed to get store for log buffer\n");
- exit(EXIT_FAILURE);
- }
+if (!(log_buffer = US malloc(LOG_BUFFER_SIZE)))
+ exim_fail("exim: failed to get store for log buffer\n");
+
+/* Initialize the default log options. */
+
+bits_set(log_selector, log_selector_size, log_default);
/* Set log_stderr to stderr, provided that stderr exists. This gets reset to
NULL when the daemon is run and the file is closed. We have to use this
/* Set up the handler for the data request signal, and set the initial
descriptive text. */
+process_info = store_get(PROCESS_INFO_SIZE, TRUE); /* tainted */
set_process_info("initializing");
os_restarting_signal(SIGUSR1, usr1_handler);
+/* If running in a dockerized environment, the TERM signal is only
+delegated to the PID 1 if we request it by setting an signal handler */
+if (getpid() == 1) signal(SIGTERM, term_handler);
+
/* SIGHUP is used to get the daemon to reconfigure. It gets set as appropriate
in the daemon code. For the rest of Exim's uses, we ignore it. */
regex_must_compile(US"^\\d\\d\\d\\s(?:\\d\\.\\d\\d?\\d?\\.\\d\\d?\\d?\\s)?",
FALSE, TRUE);
+#ifdef WHITELIST_D_MACROS
+/* Precompile the regular expression used to filter the content of macros
+given to -D for permissibility. */
+
+regex_whitelisted_macro =
+ regex_must_compile(US"^[A-Za-z0-9_/.-]*$", FALSE, TRUE);
+#endif
+
+for (i = 0; i < REGEX_VARS; i++) regex_vars[i] = NULL;
+
/* If the program is called as "mailq" treat it as equivalent to "exim -bp";
this seems to be a generally accepted convention, since one finds symbolic
links called "mailq" in standard OS configurations. */
if ((namelen == 5 && Ustrcmp(argv[0], "rmail") == 0) ||
(namelen > 5 && Ustrncmp(argv[0] + namelen - 6, "/rmail", 6) == 0))
{
- dot_ends = FALSE;
+ f.dot_ends = FALSE;
called_as = US"-rmail";
errors_sender_rc = EXIT_SUCCESS;
}
normally be root, but in some esoteric environments it may not be. */
original_euid = geteuid();
+original_egid = getegid();
/* Get the real uid and gid. If the caller is root, force the effective uid/gid
to be the same as the real ones. This makes a difference only if Exim is setuid
if (real_uid == root_uid)
{
- setgid(real_gid);
- setuid(real_uid);
+ if ((rv = setgid(real_gid)))
+ exim_fail("exim: setgid(%ld) failed: %s\n",
+ (long int)real_gid, strerror(errno));
+ if ((rv = setuid(real_uid)))
+ exim_fail("exim: setuid(%ld) failed: %s\n",
+ (long int)real_uid, strerror(errno));
}
/* If neither the original real uid nor the original euid was root, Exim is
unprivileged = (real_uid != root_uid && original_euid != root_uid);
-/* If the first argument is --help, pretend there are no arguments. This will
-cause a brief message to be given. */
-
-if (argc > 1 && Ustrcmp(argv[1], "--help") == 0) argc = 1;
-
/* Scan the program's arguments. Some can be dealt with right away; others are
simply recorded for checking and handling afterwards. Do a high-level switch
on the second character (the one after '-'), to save some effort. */
break;
}
- /* An option consistion of -- terminates the options */
+ /* An option consisting of -- terminates the options */
if (Ustrcmp(arg, "--") == 0)
{
{
switchchar = arg[3];
argrest += 2;
- queue_2stage = TRUE;
+ f.queue_2stage = TRUE;
}
/* Make -r synonymous with -f, since it is a documented alias */
argrest++;
}
+ /* deal with --option_aliases */
+ else if (switchchar == '-')
+ {
+ if (Ustrcmp(argrest, "help") == 0)
+ {
+ usage_wanted = TRUE;
+ break;
+ }
+ else if (Ustrcmp(argrest, "version") == 0)
+ {
+ switchchar = 'b';
+ argrest = US"V";
+ }
+ }
+
/* High-level switch on active initial letter */
switch(switchchar)
{
+
+ /* sendmail uses -Ac and -Am to control which .cf file is used;
+ we ignore them. */
+ case 'A':
+ if (*argrest == '\0') { badarg = TRUE; break; }
+ else
+ {
+ BOOL ignore = FALSE;
+ switch (*argrest)
+ {
+ case 'c':
+ case 'm':
+ if (*(argrest + 1) == '\0')
+ ignore = TRUE;
+ break;
+ }
+ if (!ignore) { badarg = TRUE; break; }
+ }
+ break;
+
/* -Btype is a sendmail option for 7bit/8bit setting. Exim is 8-bit clean
so has no need of it. */
if (*argrest == 'd')
{
- daemon_listen = TRUE;
- if (*(++argrest) == 'f') background_daemon = FALSE;
+ f.daemon_listen = TRUE;
+ if (*(++argrest) == 'f') f.background_daemon = FALSE;
else if (*argrest != 0) { badarg = TRUE; break; }
}
else if (*argrest == 'F')
{
- filter_test |= FTEST_SYSTEM;
+ filter_test |= checking = FTEST_SYSTEM;
if (*(++argrest) != 0) { badarg = TRUE; break; }
if (++i < argc) filter_test_sfile = argv[i]; else
- {
- fprintf(stderr, "exim: file name expected after %s\n", argv[i-1]);
- exit(EXIT_FAILURE);
- }
+ exim_fail("exim: file name expected after %s\n", argv[i-1]);
}
/* -bf: Run user filter test
{
if (*(++argrest) == 0)
{
- filter_test |= FTEST_USER;
+ filter_test |= checking = FTEST_USER;
if (++i < argc) filter_test_ufile = argv[i]; else
- {
- fprintf(stderr, "exim: file name expected after %s\n", argv[i-1]);
- exit(EXIT_FAILURE);
- }
+ exim_fail("exim: file name expected after %s\n", argv[i-1]);
}
else
{
if (++i >= argc)
- {
- fprintf(stderr, "exim: string expected after %s\n", arg);
- exit(EXIT_FAILURE);
- }
+ exim_fail("exim: string expected after %s\n", arg);
if (Ustrcmp(argrest, "d") == 0) ftest_domain = argv[i];
else if (Ustrcmp(argrest, "l") == 0) ftest_localpart = argv[i];
else if (Ustrcmp(argrest, "p") == 0) ftest_prefix = argv[i];
{
if (++i >= argc) { badarg = TRUE; break; }
sender_host_address = argv[i];
- host_checking = checking = log_testing_mode = TRUE;
- host_checking_callout = argrest[1] == 'c';
+ host_checking = checking = f.log_testing_mode = TRUE;
+ f.host_checking_callout = argrest[1] == 'c';
+ message_logs = FALSE;
}
/* -bi: This option is used by sendmail to initialize *the* alias file,
else if (Ustrcmp(argrest, "i") == 0) bi_option = TRUE;
+ /* -bI: provide information, of the type to follow after a colon.
+ This is an Exim flag. */
+
+ else if (argrest[0] == 'I' && Ustrlen(argrest) >= 2 && argrest[1] == ':')
+ {
+ uschar *p = &argrest[2];
+ info_flag = CMDINFO_HELP;
+ if (Ustrlen(p))
+ {
+ if (strcmpic(p, CUS"sieve") == 0)
+ {
+ info_flag = CMDINFO_SIEVE;
+ info_stdout = TRUE;
+ }
+ else if (strcmpic(p, CUS"dscp") == 0)
+ {
+ info_flag = CMDINFO_DSCP;
+ info_stdout = TRUE;
+ }
+ else if (strcmpic(p, CUS"help") == 0)
+ {
+ info_stdout = TRUE;
+ }
+ }
+ }
+
/* -bm: Accept and deliver message - the default option. Reinstate
receiving_message, which got turned off for all -b options. */
else if (Ustrcmp(argrest, "m") == 0) receiving_message = TRUE;
+ /* -bmalware: test the filename given for malware */
+
+ else if (Ustrcmp(argrest, "malware") == 0)
+ {
+ if (++i >= argc) { badarg = TRUE; break; }
+ checking = TRUE;
+ malware_test_file = argv[i];
+ }
+
/* -bnq: For locally originating messages, do not qualify unqualified
addresses. In the envelope, this causes errors; in header lines they
just get left. */
else if (Ustrcmp(argrest, "nq") == 0)
{
- allow_unqualified_sender = FALSE;
- allow_unqualified_recipient = FALSE;
+ f.allow_unqualified_sender = FALSE;
+ f.allow_unqualified_recipient = FALSE;
}
/* -bpxx: List the contents of the mail queue, in various forms. If
else if (Ustrcmp(argrest, "P") == 0)
{
- list_options = TRUE;
- debug_selector |= D_v;
- debug_file = stderr;
+ /* -bP config: we need to setup here, because later,
+ * when list_options is checked, the config is read already */
+ if (argv[i+1] && Ustrcmp(argv[i+1], "config") == 0)
+ {
+ list_config = TRUE;
+ readconf_save_config(version_string);
+ }
+ else
+ {
+ list_options = TRUE;
+ debug_selector |= D_v;
+ debug_file = stderr;
+ }
}
/* -brt: Test retry configuration lookup */
else if (Ustrcmp(argrest, "rt") == 0)
{
+ checking = TRUE;
test_retry_arg = i + 1;
goto END_ARG;
}
else if (Ustrcmp(argrest, "rw") == 0)
{
+ checking = TRUE;
test_rewrite_arg = i + 1;
goto END_ARG;
}
/* -bt: address testing mode */
else if (Ustrcmp(argrest, "t") == 0)
- address_test_mode = checking = log_testing_mode = TRUE;
+ f.address_test_mode = checking = f.log_testing_mode = TRUE;
/* -bv: verify addresses */
else if (Ustrcmp(argrest, "v") == 0)
- verify_address_mode = checking = log_testing_mode = TRUE;
+ verify_address_mode = checking = f.log_testing_mode = TRUE;
/* -bvs: verify sender addresses */
else if (Ustrcmp(argrest, "vs") == 0)
{
- verify_address_mode = checking = log_testing_mode = TRUE;
+ verify_address_mode = checking = f.log_testing_mode = TRUE;
verify_as_sender = TRUE;
}
printf("%s\n", CS version_copyright);
version_printed = TRUE;
show_whats_supported(stdout);
+ f.log_testing_mode = TRUE;
+ }
+
+ /* -bw: inetd wait mode, accept a listening socket as stdin */
+
+ else if (*argrest == 'w')
+ {
+ f.inetd_wait_mode = TRUE;
+ f.background_daemon = FALSE;
+ f.daemon_listen = TRUE;
+ if (*(++argrest) != '\0')
+ if ((inetd_wait_timeout = readconf_readtime(argrest, 0, FALSE)) <= 0)
+ exim_fail("exim: bad time value %s: abandoned\n", argv[i]);
}
else badarg = TRUE;
#ifdef ALT_CONFIG_PREFIX
int sep = 0;
int len = Ustrlen(ALT_CONFIG_PREFIX);
- uschar *list = argrest;
+ const uschar *list = argrest;
uschar *filename;
while((filename = string_nextinlist(&list, &sep, big_buffer,
big_buffer_size)) != NULL)
Ustrncmp(filename, ALT_CONFIG_PREFIX, len) != 0 ||
Ustrstr(filename, "/../") != NULL) &&
(Ustrcmp(filename, "/dev/null") != 0 || real_uid != root_uid))
+ exim_fail("-C Permission denied\n");
+ }
+ #endif
+ if (real_uid != root_uid)
+ {
+ #ifdef TRUSTED_CONFIG_LIST
+
+ if (real_uid != exim_uid
+ #ifdef CONFIGURE_OWNER
+ && real_uid != config_uid
+ #endif
+ )
+ f.trusted_config = FALSE;
+ else
{
- fprintf(stderr, "-C Permission denied\n");
- exit(EXIT_FAILURE);
+ FILE *trust_list = Ufopen(TRUSTED_CONFIG_LIST, "rb");
+ if (trust_list)
+ {
+ struct stat statbuf;
+
+ if (fstat(fileno(trust_list), &statbuf) != 0 ||
+ (statbuf.st_uid != root_uid /* owner not root */
+ #ifdef CONFIGURE_OWNER
+ && statbuf.st_uid != config_uid /* owner not the special one */
+ #endif
+ ) || /* or */
+ (statbuf.st_gid != root_gid /* group not root */
+ #ifdef CONFIGURE_GROUP
+ && statbuf.st_gid != config_gid /* group not the special one */
+ #endif
+ && (statbuf.st_mode & 020) != 0 /* group writeable */
+ ) || /* or */
+ (statbuf.st_mode & 2) != 0) /* world writeable */
+ {
+ f.trusted_config = FALSE;
+ fclose(trust_list);
+ }
+ else
+ {
+ /* Well, the trust list at least is up to scratch... */
+ rmark reset_point = store_mark();
+ uschar *trusted_configs[32];
+ int nr_configs = 0;
+ int i = 0;
+
+ while (Ufgets(big_buffer, big_buffer_size, trust_list))
+ {
+ uschar *start = big_buffer, *nl;
+ while (*start && isspace(*start))
+ start++;
+ if (*start != '/')
+ continue;
+ nl = Ustrchr(start, '\n');
+ if (nl)
+ *nl = 0;
+ trusted_configs[nr_configs++] = string_copy(start);
+ if (nr_configs == 32)
+ break;
+ }
+ fclose(trust_list);
+
+ if (nr_configs)
+ {
+ int sep = 0;
+ const uschar *list = argrest;
+ uschar *filename;
+ while (f.trusted_config && (filename = string_nextinlist(&list,
+ &sep, big_buffer, big_buffer_size)) != NULL)
+ {
+ for (i=0; i < nr_configs; i++)
+ if (Ustrcmp(filename, trusted_configs[i]) == 0)
+ break;
+ if (i == nr_configs)
+ {
+ f.trusted_config = FALSE;
+ break;
+ }
+ }
+ }
+ else /* No valid prefixes found in trust_list file. */
+ f.trusted_config = FALSE;
+ store_reset(reset_point);
+ }
+ }
+ else /* Could not open trust_list file. */
+ f.trusted_config = FALSE;
}
- }
+ #else
+ /* Not root; don't trust config */
+ f.trusted_config = FALSE;
#endif
+ }
config_main_filelist = argrest;
- config_changed = TRUE;
+ f.config_changed = TRUE;
}
break;
/* -D: set up a macro definition */
case 'D':
- #ifdef DISABLE_D_OPTION
- fprintf(stderr, "exim: -D is not available in this Exim binary\n");
- exit(EXIT_FAILURE);
- #else
+#ifdef DISABLE_D_OPTION
+ exim_fail("exim: -D is not available in this Exim binary\n");
+#else
{
int ptr = 0;
- macro_item *mlast = NULL;
macro_item *m;
uschar name[24];
uschar *s = argrest;
+ opt_D_used = TRUE;
while (isspace(*s)) s++;
if (*s < 'A' || *s > 'Z')
- {
- fprintf(stderr, "exim: macro name set by -D must start with "
+ exim_fail("exim: macro name set by -D must start with "
"an upper case letter\n");
- exit(EXIT_FAILURE);
- }
while (isalnum(*s) || *s == '_')
{
while (isspace(*s)) s++;
}
- for (m = macros; m != NULL; m = m->next)
- {
+ for (m = macros_user; m; m = m->next)
if (Ustrcmp(m->name, name) == 0)
- {
- fprintf(stderr, "exim: duplicated -D in command line\n");
- exit(EXIT_FAILURE);
- }
- mlast = m;
- }
+ exim_fail("exim: duplicated -D in command line\n");
- m = store_get(sizeof(macro_item) + Ustrlen(name));
- m->next = NULL;
- m->command_line = TRUE;
- if (mlast == NULL) macros = m; else mlast->next = m;
- Ustrcpy(m->name, name);
- m->replacement = string_copy(s);
+ m = macro_create(name, s, TRUE);
if (clmacro_count >= MAX_CLMACROS)
- {
- fprintf(stderr, "exim: too many -D options on command line\n");
- exit(EXIT_FAILURE);
- }
- clmacros[clmacro_count++] = string_sprintf("-D%s=%s", m->name,
- m->replacement);
+ exim_fail("exim: too many -D options on command line\n");
+ clmacros[clmacro_count++] =
+ string_sprintf("-D%s=%s", m->name, m->replacement);
}
#endif
break;
debug_file = NULL;
if (*argrest == 'd')
{
- debug_daemon = TRUE;
+ f.debug_daemon = TRUE;
argrest++;
}
if (*argrest != 0)
- decode_bits(&selector, NULL, D_memory, 0, argrest, debug_options,
- debug_options_count, US"debug");
+ decode_bits(&selector, 1, debug_notall, argrest,
+ debug_options, debug_options_count, US"debug", 0);
debug_selector = selector;
}
break;
message_reference at it, for logging. */
case 'E':
- local_error_message = TRUE;
+ f.local_error_message = TRUE;
if (mac_ismsgid(argrest)) message_reference = argrest;
break;
{ badarg = TRUE; break; }
}
originator_name = argrest;
- sender_name_forced = TRUE;
+ f.sender_name_forced = TRUE;
break;
case 'f':
{
- int start, end;
+ int dummy_start, dummy_end;
uschar *errmess;
if (*argrest == 0)
{
{ badarg = TRUE; break; }
}
if (*argrest == 0)
- {
- sender_address = string_sprintf(""); /* Ensure writeable memory */
- }
+ *(sender_address = store_get(1, FALSE)) = '\0'; /* Ensure writeable memory */
else
{
uschar *temp = argrest + Ustrlen(argrest) - 1;
if (temp >= argrest && *temp == '.') f_end_dot = TRUE;
allow_domain_literals = TRUE;
strip_trailing_dot = TRUE;
- sender_address = parse_extract_address(argrest, &errmess, &start, &end,
- &sender_address_domain, TRUE);
+#ifdef SUPPORT_I18N
+ allow_utf8_domains = TRUE;
+#endif
+ sender_address = parse_extract_address(argrest, &errmess,
+ &dummy_start, &dummy_end, &sender_address_domain, TRUE);
+ sender_address = string_copy_taint(sender_address, TRUE);
+#ifdef SUPPORT_I18N
+ message_smtputf8 = string_is_utf8(sender_address);
+ allow_utf8_domains = FALSE;
+#endif
allow_domain_literals = FALSE;
strip_trailing_dot = FALSE;
- if (sender_address == NULL)
- {
- fprintf(stderr, "exim: bad -f address \"%s\": %s\n", argrest, errmess);
- return EXIT_FAILURE;
- }
+ if (!sender_address)
+ exim_fail("exim: bad -f address \"%s\": %s\n", argrest, errmess);
}
- sender_address_forced = TRUE;
+ f.sender_address_forced = TRUE;
}
break;
- /* This is some Sendmail thing which can be ignored */
+ /* -G: sendmail invocation to specify that it's a gateway submission and
+ sendmail may complain about problems instead of fixing them.
+ We make it equivalent to an ACL "control = suppress_local_fixups" and do
+ not at this time complain about problems. */
case 'G':
+ flag_G = TRUE;
break;
/* -h: Set the hop count for an incoming message. Exim does not currently
not to be documented for sendmail but mailx (at least) uses it) */
case 'i':
- if (*argrest == 0) dot_ends = FALSE; else badarg = TRUE;
+ if (*argrest == 0) f.dot_ends = FALSE; else badarg = TRUE;
break;
+ /* -L: set the identifier used for syslog; equivalent to setting
+ syslog_processname in the config file, but needs to be an admin option. */
+
+ case 'L':
+ if (*argrest == '\0')
+ {
+ if(++i < argc) argrest = argv[i]; else
+ { badarg = TRUE; break; }
+ }
+ if ((sz = Ustrlen(argrest)) > 32)
+ exim_fail("exim: the -L syslog name is too long: \"%s\"\n", argrest);
+ if (sz < 1)
+ exim_fail("exim: the -L syslog name is too short\n");
+ cmdline_syslog_name = argrest;
+ break;
+
case 'M':
receiving_message = FALSE;
EXIM_SOCKLEN_T size = sizeof(interface_sock);
if (argc != i + 6)
- {
- fprintf(stderr, "exim: too many or too few arguments after -MC\n");
- return EXIT_FAILURE;
- }
+ exim_fail("exim: too many or too few arguments after -MC\n");
if (msg_action_arg >= 0)
- {
- fprintf(stderr, "exim: incompatible arguments\n");
- return EXIT_FAILURE;
- }
+ exim_fail("exim: incompatible arguments\n");
continue_transport = argv[++i];
continue_hostname = argv[++i];
queue_run_pipe = passed_qr_pipe;
if (!mac_ismsgid(argv[i]))
- {
- fprintf(stderr, "exim: malformed message id %s after -MC option\n",
+ exim_fail("exim: malformed message id %s after -MC option\n",
argv[i]);
- return EXIT_FAILURE;
- }
- /* Set up $sending_ip_address and $sending_port */
+ /* Set up $sending_ip_address and $sending_port, unless proxied */
- if (getsockname(fileno(stdin), (struct sockaddr *)(&interface_sock),
- &size) == 0)
- sending_ip_address = host_ntoa(-1, &interface_sock, NULL,
- &sending_port);
- else
- {
- fprintf(stderr, "exim: getsockname() failed after -MC option: %s\n",
- strerror(errno));
- return EXIT_FAILURE;
- }
+ if (!continue_proxy_cipher)
+ if (getsockname(fileno(stdin), (struct sockaddr *)(&interface_sock),
+ &size) == 0)
+ sending_ip_address = host_ntoa(-1, &interface_sock, NULL,
+ &sending_port);
+ else
+ exim_fail("exim: getsockname() failed after -MC option: %s\n",
+ strerror(errno));
- if (running_in_test_harness) millisleep(500);
+ testharness_pause_ms(500);
break;
}
+ else if (*argrest == 'C' && argrest[1] && !argrest[2])
+ {
+ switch(argrest[1])
+ {
/* -MCA: set the smtp_authenticated flag; this is useful only when it
precedes -MC (see above). The flag indicates that the host to which
Exim is connected has accepted an AUTH sequence. */
- else if (Ustrcmp(argrest, "CA") == 0)
- {
- smtp_authenticated = TRUE;
- break;
- }
+ case 'A': f.smtp_authenticated = TRUE; break;
+
+ /* -MCD: set the smtp_use_dsn flag; this indicates that the host
+ that exim is connected to supports the esmtp extension DSN */
+
+ case 'D': smtp_peer_options |= OPTION_DSN; break;
+
+ /* -MCG: set the queue name, to a non-default value */
+
+ case 'G': if (++i < argc) queue_name = string_copy(argv[i]);
+ else badarg = TRUE;
+ break;
+
+ /* -MCK: the peer offered CHUNKING. Must precede -MC */
+
+ case 'K': smtp_peer_options |= OPTION_CHUNKING; break;
/* -MCP: set the smtp_use_pipelining flag; this is useful only when
it preceded -MC (see above) */
- else if (Ustrcmp(argrest, "CP") == 0)
- {
- smtp_use_pipelining = TRUE;
- break;
- }
+ case 'P': smtp_peer_options |= OPTION_PIPE; break;
/* -MCQ: pass on the pid of the queue-running process that started
this chain of deliveries and the fd of its synchronizing pipe; this
is useful only when it precedes -MC (see above) */
- else if (Ustrcmp(argrest, "CQ") == 0)
- {
- if(++i < argc) passed_qr_pid = (pid_t)(Uatol(argv[i]));
- else badarg = TRUE;
- if(++i < argc) passed_qr_pipe = (int)(Uatol(argv[i]));
- else badarg = TRUE;
- break;
- }
+ case 'Q': if (++i < argc) passed_qr_pid = (pid_t)(Uatol(argv[i]));
+ else badarg = TRUE;
+ if (++i < argc) passed_qr_pipe = (int)(Uatol(argv[i]));
+ else badarg = TRUE;
+ break;
/* -MCS: set the smtp_use_size flag; this is useful only when it
precedes -MC (see above) */
- else if (Ustrcmp(argrest, "CS") == 0)
- {
- smtp_use_size = TRUE;
- break;
- }
+ case 'S': smtp_peer_options |= OPTION_SIZE; break;
+
+#ifndef DISABLE_TLS
+ /* -MCt: similar to -MCT below but the connection is still open
+ via a proxy process which handles the TLS context and coding.
+ Require three arguments for the proxied local address and port,
+ and the TLS cipher. */
+
+ case 't': if (++i < argc) sending_ip_address = argv[i];
+ else badarg = TRUE;
+ if (++i < argc) sending_port = (int)(Uatol(argv[i]));
+ else badarg = TRUE;
+ if (++i < argc) continue_proxy_cipher = argv[i];
+ else badarg = TRUE;
+ /*FALLTHROUGH*/
/* -MCT: set the tls_offered flag; this is useful only when it
precedes -MC (see above). The flag indicates that the host to which
Exim is connected has offered TLS support. */
- #ifdef SUPPORT_TLS
- else if (Ustrcmp(argrest, "CT") == 0)
- {
- tls_offered = TRUE;
+ case 'T': smtp_peer_options |= OPTION_TLS; break;
+#endif
+
+ default: badarg = TRUE; break;
+ }
break;
}
- #endif
/* -M[x]: various operations on the following list of message ids:
-M deliver the messages, ignoring next retry times and thawing
-Mes edit sender
-Mset load a message for use with -be
-Mvb show body
+ -Mvc show copy (of whole message, in RFC 2822 format)
-Mvh show header
-Mvl show log
*/
else if (*argrest == 0)
{
msg_action = MSG_DELIVER;
- forced_delivery = deliver_force_thaw = TRUE;
+ forced_delivery = f.deliver_force_thaw = TRUE;
}
else if (Ustrcmp(argrest, "ar") == 0)
{
msg_action = MSG_DELIVER;
deliver_give_up = TRUE;
}
+ else if (Ustrcmp(argrest, "G") == 0)
+ {
+ msg_action = MSG_SETQUEUE;
+ queue_name_dest = argv[++i];
+ }
else if (Ustrcmp(argrest, "mad") == 0)
{
msg_action = MSG_MARK_ALL_DELIVERED;
msg_action = MSG_SHOW_BODY;
one_msg_action = TRUE;
}
+ else if (Ustrcmp(argrest, "vc") == 0)
+ {
+ msg_action = MSG_SHOW_COPY;
+ one_msg_action = TRUE;
+ }
else if (Ustrcmp(argrest, "vh") == 0)
{
msg_action = MSG_SHOW_HEADER;
msg_action_arg = i + 1;
if (msg_action_arg >= argc)
- {
- fprintf(stderr, "exim: no message ids given after %s option\n", arg);
- return EXIT_FAILURE;
- }
+ exim_fail("exim: no message ids given after %s option\n", arg);
/* Some require only message ids to follow */
if (!one_msg_action)
{
- int j;
- for (j = msg_action_arg; j < argc; j++) if (!mac_ismsgid(argv[j]))
- {
- fprintf(stderr, "exim: malformed message id %s after %s option\n",
+ for (int j = msg_action_arg; j < argc; j++) if (!mac_ismsgid(argv[j]))
+ exim_fail("exim: malformed message id %s after %s option\n",
argv[j], arg);
- return EXIT_FAILURE;
- }
goto END_ARG; /* Remaining args are ids */
}
else
{
if (!mac_ismsgid(argv[msg_action_arg]))
- {
- fprintf(stderr, "exim: malformed message id %s after %s option\n",
+ exim_fail("exim: malformed message id %s after %s option\n",
argv[msg_action_arg], arg);
- return EXIT_FAILURE;
- }
i++;
}
break;
case 'N':
if (*argrest == 0)
{
- dont_deliver = TRUE;
+ f.dont_deliver = TRUE;
debug_selector |= D_v;
debug_file = stderr;
}
break;
- /* -n: This means "don't alias" in sendmail, apparently. Just ignore
- it. */
+ /* -n: This means "don't alias" in sendmail, apparently.
+ For normal invocations, it has no effect.
+ It may affect some other options. */
case 'n':
+ flag_n = TRUE;
break;
/* -O: Just ignore it. In sendmail, apparently -O option=value means set
if (*argrest == 0)
{
if (++i >= argc)
- {
- fprintf(stderr, "exim: string expected after -O\n");
- exit(EXIT_FAILURE);
- }
+ exim_fail("exim: string expected after -O\n");
}
break;
if (alias_arg[0] == 0)
{
if (i+1 < argc) alias_arg = argv[++i]; else
- {
- fprintf(stderr, "exim: string expected after -oA\n");
- exit(EXIT_FAILURE);
- }
+ exim_fail("exim: string expected after -oA\n");
}
}
if (p != NULL)
{
if (!isdigit(*p))
- {
- fprintf(stderr, "exim: number expected after -oB\n");
- exit(EXIT_FAILURE);
- }
+ exim_fail("exim: number expected after -oB\n");
connection_max_messages = Uatoi(p);
}
}
else if (Ustrcmp(argrest, "db") == 0)
{
- synchronous_delivery = FALSE;
+ f.synchronous_delivery = FALSE;
arg_queue_only = FALSE;
queue_only_set = TRUE;
}
else if (Ustrcmp(argrest, "df") == 0 || Ustrcmp(argrest, "di") == 0)
{
- synchronous_delivery = TRUE;
+ f.synchronous_delivery = TRUE;
arg_queue_only = FALSE;
queue_only_set = TRUE;
}
else if (Ustrcmp(argrest, "dq") == 0)
{
- synchronous_delivery = FALSE;
+ f.synchronous_delivery = FALSE;
arg_queue_only = TRUE;
queue_only_set = TRUE;
}
else if (Ustrcmp(argrest, "dqs") == 0)
{
- queue_smtp = TRUE;
+ f.queue_smtp = TRUE;
arg_queue_only = FALSE;
queue_only_set = TRUE;
}
else if (Ustrcmp(argrest, "i") == 0 ||
Ustrcmp(argrest, "itrue") == 0)
- dot_ends = FALSE;
+ f.dot_ends = FALSE;
/* -oM*: Set various characteristics for an incoming message; actually
acted on for trusted callers only. */
else if (*argrest == 'M')
{
if (i+1 >= argc)
- {
- fprintf(stderr, "exim: data expected after -o%s\n", argrest);
- exit(EXIT_FAILURE);
- }
+ exim_fail("exim: data expected after -o%s\n", argrest);
/* -oMa: Set sender host address */
/* -oMas: setting authenticated sender */
- else if (Ustrcmp(argrest, "Mas") == 0) authenticated_sender = argv[++i];
+ else if (Ustrcmp(argrest, "Mas") == 0)
+ authenticated_sender = string_copy_taint(argv[++i], TRUE);
/* -oMai: setting authenticated id */
- else if (Ustrcmp(argrest, "Mai") == 0) authenticated_id = argv[++i];
+ else if (Ustrcmp(argrest, "Mai") == 0)
+ authenticated_id = string_copy_taint(argv[++i], TRUE);
/* -oMi: Set incoming interface address */
else if (Ustrcmp(argrest, "Mi") == 0) interface_address = argv[++i];
+ /* -oMm: Message reference */
+
+ else if (Ustrcmp(argrest, "Mm") == 0)
+ {
+ if (!mac_ismsgid(argv[i+1]))
+ exim_fail("-oMm must be a valid message ID\n");
+ if (!f.trusted_config)
+ exim_fail("-oMm must be called by a trusted user/config\n");
+ message_reference = argv[++i];
+ }
+
/* -oMr: Received protocol */
- else if (Ustrcmp(argrest, "Mr") == 0) received_protocol = argv[++i];
+ else if (Ustrcmp(argrest, "Mr") == 0)
+
+ if (received_protocol)
+ exim_fail("received_protocol is set already\n");
+ else
+ received_protocol = argv[++i];
/* -oMs: Set sender host name */
- else if (Ustrcmp(argrest, "Ms") == 0) sender_host_name = argv[++i];
+ else if (Ustrcmp(argrest, "Ms") == 0)
+ sender_host_name = string_copy_taint(argv[++i], TRUE);
/* -oMt: Set sender ident */
else if (Ustrcmp(argrest, "o") == 0) {}
- /* -oP <name>: set pid file path for daemon */
+ /* -oP <name>: set pid file path for daemon
+ -oPX: delete pid file of daemon */
else if (Ustrcmp(argrest, "P") == 0)
override_pid_file_path = argv[++i];
+ else if (Ustrcmp(argrest, "PX") == 0)
+ delete_pid_file();
+
/* -or <n>: set timeout for non-SMTP acceptance
-os <n>: set timeout for SMTP acceptance */
}
else *tp = readconf_readtime(argrest + 1, 0, FALSE);
if (*tp < 0)
- {
- fprintf(stderr, "exim: bad time value %s: abandoned\n", argv[i]);
- exit(EXIT_FAILURE);
- }
+ exim_fail("exim: bad time value %s: abandoned\n", argv[i]);
}
/* -oX <list>: Override local_interfaces and/or default daemon ports */
which sets the host protocol and host name */
if (*argrest == 0)
- {
- if (i+1 < argc) argrest = argv[++i]; else
+ if (i+1 < argc)
+ argrest = argv[++i];
+ else
{ badarg = TRUE; break; }
- }
if (*argrest != 0)
{
- uschar *hn = Ustrchr(argrest, ':');
+ uschar *hn;
+
+ if (received_protocol)
+ exim_fail("received_protocol is set already\n");
+
+ hn = Ustrchr(argrest, ':');
if (hn == NULL)
- {
received_protocol = argrest;
- }
else
{
+ int old_pool = store_pool;
+ store_pool = POOL_PERM;
received_protocol = string_copyn(argrest, hn - argrest);
+ store_pool = old_pool;
sender_host_name = hn + 1;
}
}
case 'q':
receiving_message = FALSE;
if (queue_interval >= 0)
- {
- fprintf(stderr, "exim: -q specified more than once\n");
- exit(EXIT_FAILURE);
- }
+ exim_fail("exim: -q specified more than once\n");
/* -qq...: Do queue runs in a 2-stage manner */
if (*argrest == 'q')
{
- queue_2stage = TRUE;
+ f.queue_2stage = TRUE;
argrest++;
}
if (*argrest == 'i')
{
- queue_run_first_delivery = TRUE;
+ f.queue_run_first_delivery = TRUE;
argrest++;
}
if (*argrest == 'f')
{
- queue_run_force = TRUE;
- if (*(++argrest) == 'f')
+ f.queue_run_force = TRUE;
+ if (*++argrest == 'f')
{
- deliver_force_thaw = TRUE;
+ f.deliver_force_thaw = TRUE;
argrest++;
}
}
if (*argrest == 'l')
{
- queue_run_local = TRUE;
+ f.queue_run_local = TRUE;
argrest++;
}
- /* -q[f][f][l]: Run the queue, optionally forced, optionally local only,
- optionally starting from a given message id. */
+ /* -q[f][f][l][G<name>]... Work on the named queue */
- if (*argrest == 0 &&
- (i + 1 >= argc || argv[i+1][0] == '-' || mac_ismsgid(argv[i+1])))
+ if (*argrest == 'G')
{
- queue_interval = 0;
- if (i+1 < argc && mac_ismsgid(argv[i+1]))
- start_queue_run_id = argv[++i];
- if (i+1 < argc && mac_ismsgid(argv[i+1]))
- stop_queue_run_id = argv[++i];
+ int i;
+ for (argrest++, i = 0; argrest[i] && argrest[i] != '/'; ) i++;
+ queue_name = string_copyn(argrest, i);
+ argrest += i;
+ if (*argrest == '/') argrest++;
}
- /* -q[f][f][l]<n>: Run the queue at regular intervals, optionally forced,
- optionally local only. */
-
- else
- {
- if (*argrest != 0)
- queue_interval = readconf_readtime(argrest, 0, FALSE);
- else
- queue_interval = readconf_readtime(argv[++i], 0, FALSE);
- if (queue_interval <= 0)
- {
- fprintf(stderr, "exim: bad time value %s: abandoned\n", argv[i]);
- exit(EXIT_FAILURE);
- }
- }
+ /* -q[f][f][l][G<name>]: Run the queue, optionally forced, optionally local
+ only, optionally named, optionally starting from a given message id. */
+
+ if (!(list_queue || count_queue))
+ if (*argrest == 0
+ && (i + 1 >= argc || argv[i+1][0] == '-' || mac_ismsgid(argv[i+1])))
+ {
+ queue_interval = 0;
+ if (i+1 < argc && mac_ismsgid(argv[i+1]))
+ start_queue_run_id = argv[++i];
+ if (i+1 < argc && mac_ismsgid(argv[i+1]))
+ stop_queue_run_id = argv[++i];
+ }
+
+ /* -q[f][f][l][G<name>/]<n>: Run the queue at regular intervals, optionally
+ forced, optionally local only, optionally named. */
+
+ else if ((queue_interval = readconf_readtime(*argrest ? argrest : argv[++i],
+ 0, FALSE)) <= 0)
+ exim_fail("exim: bad time value %s: abandoned\n", argv[i]);
break;
argument. */
if (*argrest != 0)
- {
- int i;
- for (i = 0; i < sizeof(rsopts)/sizeof(uschar *); i++)
- {
+ for (int i = 0; i < nelem(rsopts); i++)
if (Ustrcmp(argrest, rsopts[i]) == 0)
{
- if (i != 2) queue_run_force = TRUE;
- if (i >= 2) deliver_selectstring_regex = TRUE;
- if (i == 1 || i == 4) deliver_force_thaw = TRUE;
+ if (i != 2) f.queue_run_force = TRUE;
+ if (i >= 2) f.deliver_selectstring_regex = TRUE;
+ if (i == 1 || i == 4) f.deliver_force_thaw = TRUE;
argrest += Ustrlen(rsopts[i]);
}
- }
- }
/* -R: Set string to match in addresses for forced queue run to
pick out particular messages. */
- if (*argrest == 0)
- {
- if (i+1 < argc) deliver_selectstring = argv[++i]; else
- {
- fprintf(stderr, "exim: string expected after -R\n");
- exit(EXIT_FAILURE);
- }
- }
- else deliver_selectstring = argrest;
+ if (*argrest)
+ deliver_selectstring = argrest;
+ else if (i+1 < argc)
+ deliver_selectstring = argv[++i];
+ else
+ exim_fail("exim: string expected after -R\n");
break;
in all cases provided there are no further characters in this
argument. */
- if (*argrest != 0)
- {
- int i;
- for (i = 0; i < sizeof(rsopts)/sizeof(uschar *); i++)
- {
+ if (*argrest)
+ for (int i = 0; i < nelem(rsopts); i++)
if (Ustrcmp(argrest, rsopts[i]) == 0)
{
- if (i != 2) queue_run_force = TRUE;
- if (i >= 2) deliver_selectstring_sender_regex = TRUE;
- if (i == 1 || i == 4) deliver_force_thaw = TRUE;
+ if (i != 2) f.queue_run_force = TRUE;
+ if (i >= 2) f.deliver_selectstring_sender_regex = TRUE;
+ if (i == 1 || i == 4) f.deliver_force_thaw = TRUE;
argrest += Ustrlen(rsopts[i]);
}
- }
- }
/* -S: Set string to match in addresses for forced queue run to
pick out particular messages. */
- if (*argrest == 0)
- {
- if (i+1 < argc) deliver_selectstring_sender = argv[++i]; else
- {
- fprintf(stderr, "exim: string expected after -S\n");
- exit(EXIT_FAILURE);
- }
- }
- else deliver_selectstring_sender = argrest;
+ if (*argrest)
+ deliver_selectstring_sender = argrest;
+ else if (i+1 < argc)
+ deliver_selectstring_sender = argv[++i];
+ else
+ exim_fail("exim: string expected after -S\n");
break;
/* -Tqt is an option that is exclusively for use by the testing suite.
tested. Otherwise variability of clock ticks etc. cause problems. */
case 'T':
- if (running_in_test_harness && Ustrcmp(argrest, "qt") == 0)
+ if (f.running_in_test_harness && Ustrcmp(argrest, "qt") == 0)
fudged_queue_times = argv[++i];
else badarg = TRUE;
break;
else if (Ustrcmp(argrest, "i") == 0)
{
extract_recipients = TRUE;
- dot_ends = FALSE;
+ f.dot_ends = FALSE;
}
/* -tls-on-connect: don't wait for STARTTLS (for old clients) */
- #ifdef SUPPORT_TLS
- else if (Ustrcmp(argrest, "ls-on-connect") == 0) tls_on_connect = TRUE;
+ #ifndef DISABLE_TLS
+ else if (Ustrcmp(argrest, "ls-on-connect") == 0) tls_in.on_connect = TRUE;
#endif
else badarg = TRUE;
if (*argrest != 0) badarg = TRUE;
break;
+ /* -X: in sendmail: takes one parameter, logfile, and sends debugging
+ logs to that file. We swallow the parameter and otherwise ignore it. */
+
+ case 'X':
+ if (*argrest == '\0')
+ if (++i >= argc)
+ exim_fail("exim: string expected after -X\n");
+ break;
+
+ case 'z':
+ if (*argrest == '\0')
+ if (++i < argc)
+ log_oneline = argv[i];
+ else
+ exim_fail("exim: file name expected after %s\n", argv[i-1]);
+ break;
+
/* All other initial characters are errors */
default:
/* Failed to recognize the option, or syntax error */
if (badarg)
- {
- fprintf(stderr, "exim abandoned: unknown, malformed, or incomplete "
+ exim_fail("exim abandoned: unknown, malformed, or incomplete "
"option %s\n", arg);
- exit(EXIT_FAILURE);
- }
}
/* If -R or -S have been specified without -q, assume a single queue run. */
-if ((deliver_selectstring != NULL || deliver_selectstring_sender != NULL) &&
- queue_interval < 0) queue_interval = 0;
+if ( (deliver_selectstring || deliver_selectstring_sender)
+ && queue_interval < 0)
+ queue_interval = 0;
-/* Arguments have been processed. Check for incompatibilities. */
-
END_ARG:
+/* If usage_wanted is set we call the usage function - which never returns */
+if (usage_wanted) exim_usage(called_as);
+
+/* Arguments have been processed. Check for incompatibilities. */
if ((
(smtp_input || extract_recipients || recipients_arg < argc) &&
- (daemon_listen || queue_interval >= 0 || bi_option ||
+ (f.daemon_listen || queue_interval >= 0 || bi_option ||
test_retry_arg >= 0 || test_rewrite_arg >= 0 ||
filter_test != FTEST_NONE || (msg_action_arg > 0 && !one_msg_action))
) ||
(
msg_action_arg > 0 &&
- (daemon_listen || queue_interval >= 0 || list_options ||
+ (f.daemon_listen || queue_interval > 0 || list_options ||
(checking && msg_action != MSG_LOAD) ||
bi_option || test_retry_arg >= 0 || test_rewrite_arg >= 0)
) ||
(
- (daemon_listen || queue_interval >= 0) &&
+ (f.daemon_listen || queue_interval > 0) &&
(sender_address != NULL || list_options || list_queue || checking ||
bi_option)
) ||
(
- daemon_listen && queue_interval == 0
+ f.daemon_listen && queue_interval == 0
+ ) ||
+ (
+ f.inetd_wait_mode && queue_interval >= 0
) ||
(
list_options &&
) ||
(
verify_address_mode &&
- (address_test_mode || smtp_input || extract_recipients ||
+ (f.address_test_mode || smtp_input || extract_recipients ||
filter_test != FTEST_NONE || bi_option)
) ||
(
- address_test_mode && (smtp_input || extract_recipients ||
+ f.address_test_mode && (smtp_input || extract_recipients ||
filter_test != FTEST_NONE || bi_option)
) ||
(
(!expansion_test || expansion_test_message != NULL)
)
)
- {
- fprintf(stderr, "exim: incompatible command-line options or arguments\n");
- exit(EXIT_FAILURE);
- }
+ exim_fail("exim: incompatible command-line options or arguments\n");
/* If debugging is set up, set the file and the file descriptor to pass on to
child processes. It should, of course, be 2 for stderr. Also, force the daemon
{
debug_file = stderr;
debug_fd = fileno(debug_file);
- background_daemon = FALSE;
- if (running_in_test_harness) millisleep(100); /* lets caller finish */
+ f.background_daemon = FALSE;
+ testharness_pause_ms(100); /* lets caller finish */
if (debug_selector != D_v) /* -v only doesn't show this */
{
debug_printf("Exim version %s uid=%ld gid=%ld pid=%d D=%x\n",
version_string, (long int)real_uid, (long int)real_gid, (int)getpid(),
debug_selector);
- show_whats_supported(stderr);
+ if (!version_printed)
+ show_whats_supported(stderr);
}
}
till after reading the config, which might specify the exim gid. Therefore,
save the group list here first. */
-group_count = getgroups(NGROUPS_MAX, group_list);
+if ((group_count = getgroups(nelem(group_list), group_list)) < 0)
+ exim_fail("exim: getgroups() failed: %s\n", strerror(errno));
/* There is a fundamental difference in some BSD systems in the matter of
groups. FreeBSD and BSDI are known to be different; NetBSD and OpenBSD are
list. Calling setgroups() with zero groups on a "different" system results in
an error return. The following code should cope with both types of system.
+ Unfortunately, recent MacOS, which should be a FreeBSD, "helpfully" succeeds
+ the "setgroups() with zero groups" - and changes the egid.
+ Thanks to that we had to stash the original_egid above, for use below
+ in the call to exim_setugid().
+
However, if this process isn't running as root, setgroups() can't be used
-since you have to be root to run it, even if throwing away groups. Not being
-root here happens only in some unusual configurations. We just ignore the
-error. */
+since you have to be root to run it, even if throwing away groups.
+Except, sigh, for Hurd - where you can.
+Not being root here happens only in some unusual configurations. */
-if (setgroups(0, NULL) != 0)
- {
- if (setgroups(1, group_list) != 0 && !unprivileged)
- {
- fprintf(stderr, "exim: setgroups() failed: %s\n", strerror(errno));
- exit(EXIT_FAILURE);
- }
- }
+if ( !unprivileged
+#ifndef OS_SETGROUPS_ZERO_DROPS_ALL
+ && setgroups(0, NULL) != 0
+#endif
+ && setgroups(1, group_list) != 0)
+ exim_fail("exim: setgroups() failed: %s\n", strerror(errno));
/* If the configuration file name has been altered by an argument on the
command line (either a new file name or a macro definition) and the caller is
-not root or the exim user, or if this is a filter testing run, remove any
-setuid privilege the program has, and run as the underlying user.
+not root, or if this is a filter testing run, remove any setuid privilege the
+program has and run as the underlying user.
-If ALT_CONFIG_ROOT_ONLY is defined, the exim user is locked out of this, which
-severely restricts the use of -C for some purposes.
+The exim user is locked out of this, which severely restricts the use of -C
+for some purposes.
Otherwise, set the real ids to the effective values (should be root unless run
from inetd, which it can either be root or the exim uid, if one is configured).
configuration file changes and macro definitions haven't happened. */
if (( /* EITHER */
- (config_changed || macros != NULL) && /* Config changed, and */
+ (!f.trusted_config || /* Config changed, or */
+ !macros_trusted(opt_D_used)) && /* impermissible macros and */
real_uid != root_uid && /* Not root, and */
- #ifndef ALT_CONFIG_ROOT_ONLY /* (when not locked out) */
- real_uid != exim_uid && /* Not exim, and */
- #endif
- !running_in_test_harness /* Not fudged */
+ !f.running_in_test_harness /* Not fudged */
) || /* OR */
expansion_test /* expansion testing */
|| /* OR */
and should be used for any logging information because attempts to write
to the log will usually fail. To arrange this, we unset really_exim. However,
if no stderr is available there is no point - we might as well have a go
- at the log (if it fails, syslog will be written). */
+ at the log (if it fails, syslog will be written).
+
+ Note that if the invoker is Exim, the logs remain available. Messing with
+ this causes unlogged successful deliveries. */
- if (log_stderr != NULL) really_exim = FALSE;
+ if (log_stderr && real_uid != exim_uid)
+ f.really_exim = FALSE;
}
/* Privilege is to be retained for the moment. It may be dropped later,
the real uid to the effective so that subsequent re-execs of Exim are done by a
privileged user. */
-else exim_setugid(geteuid(), getegid(), FALSE, US"forcing real = effective");
+else
+ exim_setugid(geteuid(), original_egid, FALSE, US"forcing real = effective");
+
+/* If testing a filter, open the file(s) now, before wasting time doing other
+setups and reading the message. */
+
+if (filter_test & FTEST_SYSTEM)
+ if ((filter_sfd = Uopen(filter_test_sfile, O_RDONLY, 0)) < 0)
+ exim_fail("exim: failed to open %s: %s\n", filter_test_sfile,
+ strerror(errno));
+
+if (filter_test & FTEST_USER)
+ if ((filter_ufd = Uopen(filter_test_ufile, O_RDONLY, 0)) < 0)
+ exim_fail("exim: failed to open %s: %s\n", filter_test_ufile,
+ strerror(errno));
+
+/* Initialise lookup_list
+If debugging, already called above via version reporting.
+In either case, we initialise the list of available lookups while running
+as root. All dynamically modules are loaded from a directory which is
+hard-coded into the binary and is code which, if not a module, would be
+part of Exim already. Ability to modify the content of the directory
+is equivalent to the ability to modify a setuid binary!
+
+This needs to happen before we read the main configuration. */
+init_lookup_list();
+
+#ifdef SUPPORT_I18N
+if (f.running_in_test_harness) smtputf8_advertise_hosts = NULL;
+#endif
+
+/* Read the main runtime configuration data; this gives up if there
+is a failure. It leaves the configuration file open so that the subsequent
+configuration data for delivery can be read if needed.
+
+NOTE: immediately after opening the configuration file we change the working
+directory to "/"! Later we change to $spool_directory. We do it there, because
+during readconf_main() some expansion takes place already. */
+
+/* Store the initial cwd before we change directories. Can be NULL if the
+dir has already been unlinked. */
+initial_cwd = os_getcwd(NULL, 0);
+
+/* checking:
+ -be[m] expansion test -
+ -b[fF] filter test new
+ -bh[c] host test -
+ -bmalware malware_test_file new
+ -brt retry test new
+ -brw rewrite test new
+ -bt address test -
+ -bv[s] address verify -
+ list_options:
+ -bP <option> (except -bP config, which sets list_config)
+
+If any of these options is set, we suppress warnings about configuration
+issues (currently about tls_advertise_hosts and keep_environment not being
+defined) */
+
+ {
+#ifdef MEASURE_TIMING
+ struct timeval t0, diff;
+ (void)gettimeofday(&t0, NULL);
+#endif
+
+ readconf_main(checking || list_options);
+
+#ifdef MEASURE_TIMING
+ report_time_since(&t0, US"readconf_main (delta)");
+#endif
+ }
+
+
+/* Now in directory "/" */
+
+if (cleanup_environment() == FALSE)
+ log_write(0, LOG_PANIC_DIE, "Can't cleanup environment");
+
+
+/* If an action on specific messages is requested, or if a daemon or queue
+runner is being started, we need to know if Exim was called by an admin user.
+This is the case if the real user is root or exim, or if the real group is
+exim, or if one of the supplementary groups is exim or a group listed in
+admin_groups. We don't fail all message actions immediately if not admin_user,
+since some actions can be performed by non-admin users. Instead, set admin_user
+for later interrogation. */
+
+if (real_uid == root_uid || real_uid == exim_uid || real_gid == exim_gid)
+ f.admin_user = TRUE;
+else
+ for (int i = 0; i < group_count && !f.admin_user; i++)
+ if (group_list[i] == exim_gid)
+ f.admin_user = TRUE;
+ else if (admin_groups)
+ for (int j = 1; j <= (int)admin_groups[0] && !f.admin_user; j++)
+ if (admin_groups[j] == group_list[i])
+ f.admin_user = TRUE;
-/* If testing a filter, open the file(s) now, before wasting time doing other
-setups and reading the message. */
+/* Another group of privileged users are the trusted users. These are root,
+exim, and any caller matching trusted_users or trusted_groups. Trusted callers
+are permitted to specify sender_addresses with -f on the command line, and
+other message parameters as well. */
-if ((filter_test & FTEST_SYSTEM) != 0)
+if (real_uid == root_uid || real_uid == exim_uid)
+ f.trusted_caller = TRUE;
+else
{
- filter_sfd = Uopen(filter_test_sfile, O_RDONLY, 0);
- if (filter_sfd < 0)
- {
- fprintf(stderr, "exim: failed to open %s: %s\n", filter_test_sfile,
- strerror(errno));
- return EXIT_FAILURE;
- }
- }
+ if (trusted_users)
+ for (int i = 1; i <= (int)trusted_users[0] && !f.trusted_caller; i++)
+ if (trusted_users[i] == real_uid)
+ f.trusted_caller = TRUE;
-if ((filter_test & FTEST_USER) != 0)
- {
- filter_ufd = Uopen(filter_test_ufile, O_RDONLY, 0);
- if (filter_ufd < 0)
- {
- fprintf(stderr, "exim: failed to open %s: %s\n", filter_test_ufile,
- strerror(errno));
- return EXIT_FAILURE;
- }
+ if (trusted_groups)
+ for (int i = 1; i <= (int)trusted_groups[0] && !f.trusted_caller; i++)
+ if (trusted_groups[i] == real_gid)
+ f.trusted_caller = TRUE;
+ else for (int j = 0; j < group_count && !f.trusted_caller; j++)
+ if (trusted_groups[i] == group_list[j])
+ f.trusted_caller = TRUE;
}
-/* Read the main runtime configuration data; this gives up if there
-is a failure. It leaves the configuration file open so that the subsequent
-configuration data for delivery can be read if needed. */
+/* At this point, we know if the user is privileged and some command-line
+options become possibly impermissible, depending upon the configuration file. */
-readconf_main();
+if (checking && commandline_checks_require_admin && !f.admin_user)
+ exim_fail("exim: those command-line flags are set to require admin\n");
/* Handle the decoding of logging options. */
-decode_bits(&log_write_selector, &log_extra_selector, 0, 0, log_selector_string,
- log_options, log_options_count, US"log");
+decode_bits(log_selector, log_selector_size, log_notall,
+ log_selector_string, log_options, log_options_count, US"log", 0);
DEBUG(D_any)
{
debug_printf("configuration file is %s\n", config_main_filename);
- debug_printf("log selectors = %08x %08x\n", log_write_selector,
- log_extra_selector);
+ debug_printf("log selectors =");
+ for (int i = 0; i < log_selector_size; i++)
+ debug_printf(" %08x", log_selector[i]);
+ debug_printf("\n");
}
/* If domain literals are not allowed, check the sender address that was
supplied with -f. Ditto for a stripped trailing dot. */
-if (sender_address != NULL)
+if (sender_address)
{
if (sender_address[sender_address_domain] == '[' && !allow_domain_literals)
- {
- fprintf(stderr, "exim: bad -f address \"%s\": domain literals not "
+ exim_fail("exim: bad -f address \"%s\": domain literals not "
"allowed\n", sender_address);
- return EXIT_FAILURE;
- }
if (f_end_dot && !strip_trailing_dot)
- {
- fprintf(stderr, "exim: bad -f address \"%s.\": domain is malformed "
+ exim_fail("exim: bad -f address \"%s.\": domain is malformed "
"(trailing dot not allowed)\n", sender_address);
- return EXIT_FAILURE;
- }
}
+/* See if an admin user overrode our logging. */
+
+if (cmdline_syslog_name)
+ if (f.admin_user)
+ {
+ syslog_processname = cmdline_syslog_name;
+ log_file_path = string_copy(CUS"syslog");
+ }
+ else
+ /* not a panic, non-privileged users should not be able to spam paniclog */
+ exim_fail(
+ "exim: you lack sufficient privilege to specify syslog process name\n");
+
/* Paranoia check of maximum lengths of certain strings. There is a check
on the length of the log file path in log.c, which will come into effect
if there are any calls to write the log earlier than this. However, if we
log_write(0, LOG_MAIN|LOG_PANIC_DIE,
"syslog_processname is longer than 32 chars: aborting");
+if (log_oneline)
+ if (f.admin_user)
+ {
+ log_write(0, LOG_MAIN, "%s", log_oneline);
+ return EXIT_SUCCESS;
+ }
+ else
+ return EXIT_FAILURE;
+
/* In some operating systems, the environment variable TMPDIR controls where
temporary files are created; Exim doesn't use these (apart from when delivering
to MBX mailboxes), but called libraries such as DBM libraries may require them.
If TMPDIR is found in the environment, reset it to the value defined in the
-TMPDIR macro, if this macro is defined. */
+EXIM_TMPDIR macro, if this macro is defined. For backward compatibility this
+macro may be called TMPDIR in old "Local/Makefile"s. It's converted to
+EXIM_TMPDIR by the build scripts.
+*/
-#ifdef TMPDIR
- {
- uschar **p;
- for (p = USS environ; *p != NULL; p++)
- {
- if (Ustrncmp(*p, "TMPDIR=", 7) == 0 &&
- Ustrcmp(*p+7, TMPDIR) != 0)
+#ifdef EXIM_TMPDIR
+ if (environ) for (uschar ** p = USS environ; *p; p++)
+ if (Ustrncmp(*p, "TMPDIR=", 7) == 0 && Ustrcmp(*p+7, EXIM_TMPDIR) != 0)
{
- uschar *newp = malloc(Ustrlen(TMPDIR) + 8);
- sprintf(CS newp, "TMPDIR=%s", TMPDIR);
+ uschar * newp = store_malloc(Ustrlen(EXIM_TMPDIR) + 8);
+ sprintf(CS newp, "TMPDIR=%s", EXIM_TMPDIR);
*p = newp;
- DEBUG(D_any) debug_printf("reset TMPDIR=%s in environment\n", TMPDIR);
+ DEBUG(D_any) debug_printf("reset TMPDIR=%s in environment\n", EXIM_TMPDIR);
}
- }
- }
#endif
/* Timezone handling. If timezone_string is "utc", set a flag to cause all
this. We have to make a new environment if TZ is wrong, but don't bother if
timestamps_utc is set, because then all times are in UTC anyway. */
-if (timezone_string != NULL && strcmpic(timezone_string, US"UTC") == 0)
- {
- timestamps_utc = TRUE;
- }
+if (timezone_string && strcmpic(timezone_string, US"UTC") == 0)
+ f.timestamps_utc = TRUE;
else
{
uschar *envtz = US getenv("TZ");
- if ((envtz == NULL && timezone_string != NULL) ||
- (envtz != NULL &&
- (timezone_string == NULL ||
- Ustrcmp(timezone_string, envtz) != 0)))
+ if (envtz
+ ? !timezone_string || Ustrcmp(timezone_string, envtz) != 0
+ : timezone_string != NULL
+ )
{
uschar **p = USS environ;
uschar **new;
uschar **newp;
int count = 0;
- while (*p++ != NULL) count++;
- if (envtz == NULL) count++;
- newp = new = malloc(sizeof(uschar *) * (count + 1));
- for (p = USS environ; *p != NULL; p++)
+ if (environ) while (*p++) count++;
+ if (!envtz) count++;
+ newp = new = store_malloc(sizeof(uschar *) * (count + 1));
+ if (environ) for (p = USS environ; *p; p++)
+ if (Ustrncmp(*p, "TZ=", 3) != 0) *newp++ = *p;
+ if (timezone_string)
{
- if (Ustrncmp(*p, "TZ=", 3) == 0) continue;
- *newp++ = *p;
- }
- if (timezone_string != NULL)
- {
- *newp = malloc(Ustrlen(timezone_string) + 4);
+ *newp = store_malloc(Ustrlen(timezone_string) + 4);
sprintf(CS *newp++, "TZ=%s", timezone_string);
}
*newp = NULL;
}
/* Handle the case when we have removed the setuid privilege because of -C or
--D. This means that the caller of Exim was not root, and, provided that
-ALT_CONFIG_ROOT_ONLY is not defined, was not the Exim user that is built into
-the binary.
+-D. This means that the caller of Exim was not root.
-If ALT_CONFIG_ROOT_ONLY is not defined, there is a problem if it turns out we
-were running as the exim user defined in the configuration file (different to
-the one in the binary). The sysadmin may expect this case to retain privilege
-because "the binary was called by the Exim user", but it hasn't, because of the
-order in which it handles this stuff. There are two possibilities:
+There is a problem if we were running as the Exim user. The sysadmin may
+expect this case to retain privilege because "the binary was called by the
+Exim user", but it hasn't, because either the -D option set macros, or the
+-C option set a non-trusted configuration file. There are two possibilities:
(1) If deliver_drop_privilege is set, Exim is not going to re-exec in order
to do message deliveries. Thus, the fact that it is running as a
(2) If deliver_drop_privilege is not set, the configuration won't work as
apparently intended, and so we log a panic message. In order to retain
- root for -C or -D, the caller must either be root or the Exim user
- defined in the binary (when deliver_drop_ privilege is false).
-
-If ALT_CONFIG_ROOT_ONLY is defined, we don't know whether we were called by the
-built-in exim user or one defined in the configuration. In either event,
-re-enable log processing, assuming the sysadmin knows what they are doing. */
-
-if (removed_privilege && (config_changed || macros != NULL) &&
- real_uid == exim_uid)
- {
- #ifdef ALT_CONFIG_ROOT_ONLY
- really_exim = TRUE; /* let logging work normally */
- #else
+ root for -C or -D, the caller must either be root or be invoking a
+ trusted configuration file (when deliver_drop_privilege is false). */
+if ( removed_privilege
+ && (!f.trusted_config || opt_D_used)
+ && real_uid == exim_uid)
if (deliver_drop_privilege)
- really_exim = TRUE; /* let logging work normally */
+ f.really_exim = TRUE; /* let logging work normally */
else
log_write(0, LOG_MAIN|LOG_PANIC,
- "exim user (uid=%d) is defined only at runtime; privilege lost for %s",
- (int)exim_uid, config_changed? "-C" : "-D");
- #endif
- }
+ "exim user lost privilege for using %s option",
+ f.trusted_config? "-D" : "-C");
/* Start up Perl interpreter if Perl support is configured and there is a
perl_startup option, and the configuration or the command line specifies
{
uschar *errstr;
DEBUG(D_any) debug_printf("Starting Perl interpreter\n");
- errstr = init_perl(opt_perl_startup);
- if (errstr != NULL)
- {
- fprintf(stderr, "exim: error in perl_startup code: %s\n", errstr);
- return EXIT_FAILURE;
- }
+ if ((errstr = init_perl(opt_perl_startup)))
+ exim_fail("exim: error in perl_startup code: %s\n", errstr);
opt_perl_started = TRUE;
}
#endif /* EXIM_PERL */
Don't attempt it if logging is disabled, or if listing variables or if
verifying/testing addresses or expansions. */
-if (((debug_selector & D_any) != 0 || (log_extra_selector & LX_arguments) != 0)
- && really_exim && !list_options && !checking)
+if ( (debug_selector & D_any || LOGGING(arguments))
+ && f.really_exim && !list_options && !checking)
{
- int i;
uschar *p = big_buffer;
- Ustrcpy(p, "cwd=");
- (void)getcwd(CS p+4, big_buffer_size - 4);
- while (*p) p++;
+ Ustrcpy(p, US"cwd= (failed)");
+
+ if (!initial_cwd)
+ p += 13;
+ else
+ {
+ Ustrncpy(p + 4, initial_cwd, big_buffer_size-5);
+ p += 4 + Ustrlen(initial_cwd);
+ /* in case p is near the end and we don't provide enough space for
+ * string_format to be willing to write. */
+ *p = '\0';
+ }
+
(void)string_format(p, big_buffer_size - (p - big_buffer), " %d args:", argc);
while (*p) p++;
- for (i = 0; i < argc; i++)
+ for (int i = 0; i < argc; i++)
{
int len = Ustrlen(argv[i]);
- uschar *printing;
+ const uschar *printing;
uschar *quote;
if (p + len + 8 >= big_buffer + big_buffer_size)
{
- Ustrcpy(p, " ...");
+ Ustrcpy(p, US" ...");
log_write(0, LOG_MAIN, "%s", big_buffer);
- Ustrcpy(big_buffer, "...");
+ Ustrcpy(big_buffer, US"...");
p = big_buffer + 3;
}
printing = string_printing(argv[i]);
if (printing[0] == 0) quote = US"\""; else
{
- uschar *pp = printing;
+ const uschar *pp = printing;
quote = US"";
while (*pp != 0) if (isspace(*pp++)) { quote = US"\""; break; }
}
- sprintf(CS p, " %s%.*s%s", quote, (int)(big_buffer_size -
+ p += sprintf(CS p, " %s%.*s%s", quote, (int)(big_buffer_size -
(p - big_buffer) - 4), printing, quote);
- while (*p) p++;
}
- if ((log_extra_selector & LX_arguments) != 0)
+ if (LOGGING(arguments))
log_write(0, LOG_MAIN, "%s", big_buffer);
else
debug_printf("%s\n", big_buffer);
if (Uchdir(spool_directory) != 0)
{
+ int dummy;
(void)directory_make(spool_directory, US"", SPOOL_DIRECTORY_MODE, FALSE);
- (void)Uchdir(spool_directory);
+ dummy = /* quieten compiler */ Uchdir(spool_directory);
+ dummy = dummy; /* yet more compiler quietening, sigh */
}
/* Handle calls with the -bi option. This is a sendmail option to rebuild *the*
(argv[1] == NULL)? US"" : argv[1]);
execv(CS argv[0], (char *const *)argv);
- fprintf(stderr, "exim: exec failed: %s\n", strerror(errno));
- exit(EXIT_FAILURE);
+ exim_fail("exim: exec failed: %s\n", strerror(errno));
}
else
{
}
}
-/* If an action on specific messages is requested, or if a daemon or queue
-runner is being started, we need to know if Exim was called by an admin user.
-This is the case if the real user is root or exim, or if the real group is
-exim, or if one of the supplementary groups is exim or a group listed in
-admin_groups. We don't fail all message actions immediately if not admin_user,
-since some actions can be performed by non-admin users. Instead, set admin_user
-for later interrogation. */
-
-if (real_uid == root_uid || real_uid == exim_uid || real_gid == exim_gid)
- admin_user = TRUE;
-else
- {
- int i, j;
-
- for (i = 0; i < group_count; i++)
- {
- if (group_list[i] == exim_gid) admin_user = TRUE;
- else if (admin_groups != NULL)
- {
- for (j = 1; j <= (int)(admin_groups[0]); j++)
- if (admin_groups[j] == group_list[i])
- { admin_user = TRUE; break; }
- }
- if (admin_user) break;
- }
- }
-
-/* Another group of privileged users are the trusted users. These are root,
-exim, and any caller matching trusted_users or trusted_groups. Trusted callers
-are permitted to specify sender_addresses with -f on the command line, and
-other message parameters as well. */
-
-if (real_uid == root_uid || real_uid == exim_uid)
- trusted_caller = TRUE;
-else
- {
- int i, j;
-
- if (trusted_users != NULL)
- {
- for (i = 1; i <= (int)(trusted_users[0]); i++)
- if (trusted_users[i] == real_uid)
- { trusted_caller = TRUE; break; }
- }
-
- if (!trusted_caller && trusted_groups != NULL)
- {
- for (i = 1; i <= (int)(trusted_groups[0]); i++)
- {
- if (trusted_groups[i] == real_gid)
- trusted_caller = TRUE;
- else for (j = 0; j < group_count; j++)
- {
- if (trusted_groups[i] == group_list[j])
- { trusted_caller = TRUE; break; }
- }
- if (trusted_caller) break;
- }
- }
- }
+/* We moved the admin/trusted check to be immediately after reading the
+configuration file. We leave these prints here to ensure that syslog setup,
+logfile setup, and so on has already happened. */
-if (trusted_caller) DEBUG(D_any) debug_printf("trusted user\n");
-if (admin_user) DEBUG(D_any) debug_printf("admin user\n");
+if (f.trusted_caller) DEBUG(D_any) debug_printf("trusted user\n");
+if (f.admin_user) DEBUG(D_any) debug_printf("admin user\n");
/* Only an admin user may start the daemon or force a queue run in the default
configuration, but the queue run restriction can be relaxed. Only an admin
user may request that a message be returned to its sender forthwith. Only an
admin user may specify a debug level greater than D_v (because it might show
passwords, etc. in lookup queries). Only an admin user may request a queue
-count. */
+count. Only an admin user can use the test interface to scan for email
+(because Exim will be in the spool dir and able to look at mails). */
-if (!admin_user)
+if (!f.admin_user)
{
BOOL debugset = (debug_selector & ~D_v) != 0;
- if (deliver_give_up || daemon_listen ||
- (count_queue && queue_list_requires_admin) ||
- (list_queue && queue_list_requires_admin) ||
- (queue_interval >= 0 && prod_requires_admin) ||
- (debugset && !running_in_test_harness))
- {
- fprintf(stderr, "exim:%s permission denied\n", debugset? " debugging" : "");
- exit(EXIT_FAILURE);
- }
+ if ( deliver_give_up || f.daemon_listen || malware_test_file
+ || count_queue && queue_list_requires_admin
+ || list_queue && queue_list_requires_admin
+ || queue_interval >= 0 && prod_requires_admin
+ || queue_name_dest && prod_requires_admin
+ || debugset && !f.running_in_test_harness
+ )
+ exim_fail("exim:%s permission denied\n", debugset? " debugging" : "");
}
/* If the real user is not root or the exim uid, the argument for passing
if (real_uid != root_uid && real_uid != exim_uid &&
(continue_hostname != NULL ||
- (dont_deliver &&
- (queue_interval >= 0 || daemon_listen || msg_action_arg > 0)
- )) && !running_in_test_harness)
- {
- fprintf(stderr, "exim: Permission denied\n");
- return EXIT_FAILURE;
- }
+ (f.dont_deliver &&
+ (queue_interval >= 0 || f.daemon_listen || msg_action_arg > 0)
+ )) && !f.running_in_test_harness)
+ exim_fail("exim: Permission denied\n");
/* If the caller is not trusted, certain arguments are ignored when running for
real, but are permitted when checking things (-be, -bv, -bt, -bh, -bf, -bF).
Note that authority for performing certain actions on messages is tested in the
queue_action() function. */
-if (!trusted_caller && !checking && filter_test == FTEST_NONE)
+if (!f.trusted_caller && !checking)
{
sender_host_name = sender_host_address = interface_address =
sender_ident = received_protocol = NULL;
interface_port = check_port(interface_address);
}
+/* If the caller is trusted, then they can use -G to suppress_local_fixups. */
+if (flag_G)
+ {
+ if (f.trusted_caller)
+ {
+ f.suppress_local_fixups = f.suppress_local_fixups_default = TRUE;
+ DEBUG(D_acl) debug_printf("suppress_local_fixups forced on by -G\n");
+ }
+ else
+ exim_fail("exim: permission denied (-G requires a trusted user)\n");
+ }
+
/* If an SMTP message is being received check to see if the standard input is a
TCP/IP socket. If it is, we assume that Exim was called from inetd if the
caller is root or the Exim user, or if the port is a privileged one. Otherwise,
interface_address = host_ntoa(-1, &interface_sock, NULL,
&interface_port);
- if (host_is_tls_on_connect_port(interface_port)) tls_on_connect = TRUE;
+ if (host_is_tls_on_connect_port(interface_port)) tls_in.on_connect = TRUE;
if (real_uid == root_uid || real_uid == exim_uid || interface_port < 1024)
{
- is_inetd = TRUE;
+ f.is_inetd = TRUE;
sender_host_address = host_ntoa(-1, (struct sockaddr *)(&inetd_sock),
NULL, &sender_host_port);
if (mua_wrapper) log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Input from "
"inetd is not supported when mua_wrapper is set");
}
else
- {
- fprintf(stderr,
+ exim_fail(
"exim: Permission denied (unprivileged user, unprivileged port)\n");
- return EXIT_FAILURE;
- }
}
}
}
root. There will be further calls later for each message received. */
#ifdef LOAD_AVG_NEEDS_ROOT
-if (receiving_message &&
- (queue_only_load >= 0 ||
- (is_inetd && smtp_load_reserve >= 0)
- ))
- {
- load_average = os_getloadavg();
- }
+if ( receiving_message
+ && (queue_only_load >= 0 || (f.is_inetd && smtp_load_reserve >= 0)))
+ load_average = OS_GETLOADAVG();
#endif
/* The queue_only configuration option can be overridden by -odx on the command
if (!unprivileged && /* originally had root AND */
!removed_privilege && /* still got root AND */
- !daemon_listen && /* not starting the daemon */
+ !f.daemon_listen && /* not starting the daemon */
queue_interval <= 0 && /* (either kind of daemon) */
( /* AND EITHER */
deliver_drop_privilege || /* requested unprivileged */
queue_interval < 0 && /* not running the queue */
(msg_action_arg < 0 || /* and */
msg_action != MSG_DELIVER) && /* not delivering and */
- (!checking || !address_test_mode) /* not address checking */
- )
- ))
- {
+ (!checking || !f.address_test_mode) /* not address checking */
+ ) ) )
exim_setugid(exim_uid, exim_gid, TRUE, US"privilege not needed");
- }
/* When we are retaining a privileged uid, we still change to the exim gid. */
-else setgid(exim_gid);
+else
+ {
+ int rv;
+ DEBUG(D_any) debug_printf("dropping to exim gid; retaining priv uid\n");
+ rv = setgid(exim_gid);
+ /* Impact of failure is that some stuff might end up with an incorrect group.
+ We track this for failures from root, since any attempt to change privilege
+ by root should succeed and failures should be examined. For non-root,
+ there's no security risk. For me, it's { exim -bV } on a just-built binary,
+ no need to complain then. */
+ if (rv == -1)
+ if (!(unprivileged || removed_privilege))
+ exim_fail("exim: changing group failed: %s\n", strerror(errno));
+ else
+ DEBUG(D_any) debug_printf("changing group to %ld failed: %s\n",
+ (long int)exim_gid, strerror(errno));
+ }
+
+/* Handle a request to scan a file for malware */
+if (malware_test_file)
+ {
+#ifdef WITH_CONTENT_SCAN
+ int result;
+ set_process_info("scanning file for malware");
+ result = malware_in_file(malware_test_file);
+ if (result == FAIL)
+ {
+ printf("No malware found.\n");
+ exit(EXIT_SUCCESS);
+ }
+ if (result != OK)
+ {
+ printf("Malware lookup returned non-okay/fail: %d\n", result);
+ exit(EXIT_FAILURE);
+ }
+ if (malware_name)
+ printf("Malware found: %s\n", malware_name);
+ else
+ printf("Malware scan detected malware of unknown name.\n");
+#else
+ printf("Malware scanning not enabled at compile time.\n");
+#endif
+ exit(EXIT_FAILURE);
+ }
/* Handle a request to list the delivery queue */
int yield = EXIT_SUCCESS;
set_process_info("acting on specified messages");
+ /* ACL definitions may be needed when removing a message (-Mrm) because
+ event_action gets expanded */
+
+ if (msg_action == MSG_REMOVE)
+ readconf_rest();
+
if (!one_msg_action)
{
for (i = msg_action_arg; i < argc; i++)
if (!queue_action(argv[i], msg_action, NULL, 0, 0))
yield = EXIT_FAILURE;
+ switch (msg_action)
+ {
+ case MSG_REMOVE: MSG_DELETE: case MSG_FREEZE: case MSG_THAW: break;
+ default: printf("\n"); break;
+ }
}
else if (!queue_action(argv[msg_action_arg], msg_action, argv, argc,
exit(yield);
}
-/* All the modes below here require the remaining configuration sections
-to be read, except that we can skip over the ACL setting when delivering
-specific messages, or doing a queue run. (For various testing cases we could
-skip too, but as they are rare, it doesn't really matter.) The argument is TRUE
-for skipping. */
+/* We used to set up here to skip reading the ACL section, on
+ (msg_action_arg > 0 || (queue_interval == 0 && !f.daemon_listen)
+Now, since the intro of the ${acl } expansion, ACL definitions may be
+needed in transports so we lost the optimisation. */
-readconf_rest(msg_action_arg > 0 || (queue_interval == 0 && !daemon_listen));
+ {
+#ifdef MEASURE_TIMING
+ struct timeval t0, diff;
+ (void)gettimeofday(&t0, NULL);
+#endif
-/* The configuration data will have been read into POOL_PERM because we won't
-ever want to reset back past it. Change the current pool to POOL_MAIN. In fact,
-this is just a bit of pedantic tidiness. It wouldn't really matter if the
-configuration were read into POOL_MAIN, because we don't do any resets till
-later on. However, it seems right, and it does ensure that both pools get used.
-*/
+ readconf_rest();
-store_pool = POOL_MAIN;
+#ifdef MEASURE_TIMING
+ report_time_since(&t0, US"readconf_rest (delta)");
+#endif
+ }
/* Handle the -brt option. This is for checking out retry configurations.
The next three arguments are a domain name or a complete address, and
if (test_retry_arg >= argc)
{
printf("-brt needs a domain or address argument\n");
- exim_exit(EXIT_FAILURE);
+ exim_exit(EXIT_FAILURE, US"main");
}
s1 = argv[test_retry_arg++];
s2 = NULL;
}
}
- yield = retry_find_config(s1, s2, basic_errno, more_errno);
- if (yield == NULL) printf("No retry information found\n"); else
+ if (!(yield = retry_find_config(s1, s2, basic_errno, more_errno)))
+ printf("No retry information found\n");
+ else
{
- retry_rule *r;
more_errno = yield->more_errno;
printf("Retry rule: %s ", yield->pattern);
printf("auth_failed ");
else printf("* ");
- for (r = yield->rules; r != NULL; r = r->next)
+ for (retry_rule * r = yield->rules; r; r = r->next)
{
printf("%c,%s", r->rule, readconf_printtime(r->timeout)); /* Do not */
printf(",%s", readconf_printtime(r->p1)); /* amalgamate */
printf("\n");
}
- exim_exit(EXIT_SUCCESS);
+ exim_exit(EXIT_SUCCESS, US"main");
}
/* Handle a request to list one or more configuration options */
+/* If -n was set, we suppress some information */
if (list_options)
{
+ BOOL fail = FALSE;
set_process_info("listing variables");
- if (recipients_arg >= argc) readconf_print(US"all", NULL);
- else for (i = recipients_arg; i < argc; i++)
+ if (recipients_arg >= argc)
+ fail = !readconf_print(US"all", NULL, flag_n);
+ else for (i = recipients_arg; i < argc; i++)
+ {
+ if (i < argc - 1 &&
+ (Ustrcmp(argv[i], "router") == 0 ||
+ Ustrcmp(argv[i], "transport") == 0 ||
+ Ustrcmp(argv[i], "authenticator") == 0 ||
+ Ustrcmp(argv[i], "macro") == 0 ||
+ Ustrcmp(argv[i], "environment") == 0))
{
- if (i < argc - 1 &&
- (Ustrcmp(argv[i], "router") == 0 ||
- Ustrcmp(argv[i], "transport") == 0 ||
- Ustrcmp(argv[i], "authenticator") == 0))
- {
- readconf_print(argv[i+1], argv[i]);
- i++;
- }
- else readconf_print(argv[i], NULL);
+ fail |= !readconf_print(argv[i+1], argv[i], flag_n);
+ i++;
}
- exim_exit(EXIT_SUCCESS);
+ else
+ fail = !readconf_print(argv[i], NULL, flag_n);
+ }
+ exim_exit(fail ? EXIT_FAILURE : EXIT_SUCCESS, US"main");
+ }
+
+if (list_config)
+ {
+ set_process_info("listing config");
+ exim_exit(readconf_print(US"config", NULL, flag_n)
+ ? EXIT_SUCCESS : EXIT_FAILURE, US"main");
}
+/* Initialise subsystems as required. */
+
+tcp_init();
+
/* Handle a request to deliver one or more messages that are already on the
queue. Values of msg_action other than MSG_DELIVER and MSG_LOAD are dealt with
above. MSG_LOAD is handled with -be (which is the only time it applies) below.
if (msg_action_arg > 0 && msg_action != MSG_LOAD)
{
- if (prod_requires_admin && !admin_user)
+ if (prod_requires_admin && !f.admin_user)
{
fprintf(stderr, "exim: Permission denied\n");
- exim_exit(EXIT_FAILURE);
+ exim_exit(EXIT_FAILURE, US"main");
}
set_process_info("delivering specified messages");
- if (deliver_give_up) forced_delivery = deliver_force_thaw = TRUE;
+ if (deliver_give_up) forced_delivery = f.deliver_force_thaw = TRUE;
for (i = msg_action_arg; i < argc; i++)
{
int status;
else if ((pid = fork()) == 0)
{
(void)deliver_message(argv[i], forced_delivery, deliver_give_up);
- _exit(EXIT_SUCCESS);
+ exim_underbar_exit(EXIT_SUCCESS);
}
else if (pid < 0)
{
fprintf(stderr, "failed to fork delivery process for %s: %s\n", argv[i],
strerror(errno));
- exim_exit(EXIT_FAILURE);
+ exim_exit(EXIT_FAILURE, US"main");
}
else wait(&status);
}
- exim_exit(EXIT_SUCCESS);
+ exim_exit(EXIT_SUCCESS, US"main");
}
/* If only a single queue run is requested, without SMTP listening, we can just
turn into a queue runner, with an optional starting message id. */
-if (queue_interval == 0 && !daemon_listen)
+if (queue_interval == 0 && !f.daemon_listen)
{
DEBUG(D_queue_run) debug_printf("Single queue run%s%s%s%s\n",
(start_queue_run_id == NULL)? US"" : US" starting at ",
(start_queue_run_id == NULL)? US"" : start_queue_run_id,
(stop_queue_run_id == NULL)? US"" : US" stopping at ",
(stop_queue_run_id == NULL)? US"" : stop_queue_run_id);
- set_process_info("running the queue (single queue run)");
+ if (*queue_name)
+ set_process_info("running the '%s' queue (single queue run)", queue_name);
+ else
+ set_process_info("running the queue (single queue run)");
queue_run(start_queue_run_id, stop_queue_run_id, FALSE);
- exim_exit(EXIT_SUCCESS);
+ exim_exit(EXIT_SUCCESS, US"main");
}
/* If user name has not been set by -F, set it from the passwd entry
unless -f has been used to set the sender address by a trusted user. */
- if (originator_name == NULL)
+ if (!originator_name)
{
- if (sender_address == NULL ||
- (!trusted_caller && filter_test == FTEST_NONE))
+ if (!sender_address || (!f.trusted_caller && filter_test == FTEST_NONE))
{
uschar *name = US pw->pw_gecos;
uschar *amp = Ustrchr(name, '&');
replaced by a copy of the login name, and some even specify that
the first character should be upper cased, so that's what we do. */
- if (amp != NULL)
+ if (amp)
{
int loffset;
string_format(buffer, sizeof(buffer), "%.*s%n%s%s",
- amp - name, name, &loffset, originator_login, amp + 1);
+ (int)(amp - name), name, &loffset, originator_login, amp + 1);
buffer[loffset] = toupper(buffer[loffset]);
name = buffer;
}
/* If a pattern for matching the gecos field was supplied, apply
it and then expand the name string. */
- if (gecos_pattern != NULL && gecos_name != NULL)
+ if (gecos_pattern && gecos_name)
{
const pcre *re;
re = regex_must_compile(gecos_pattern, FALSE, TRUE); /* Use malloc */
{
uschar *new_name = expand_string(gecos_name);
expand_nmax = -1;
- if (new_name != NULL)
+ if (new_name)
{
DEBUG(D_receive) debug_printf("user name \"%s\" extracted from "
"gecos field \"%s\"\n", new_name, name);
configuration specifies something to use. When running in the test harness,
any setting of unknown_login overrides the actual name. */
-if (originator_login == NULL || running_in_test_harness)
+if (originator_login == NULL || f.running_in_test_harness)
{
if (unknown_login != NULL)
{
for incoming messages via the daemon. The daemon cannot be run in mua_wrapper
mode. */
-if (daemon_listen || queue_interval > 0)
+if (f.daemon_listen || f.inetd_wait_mode || queue_interval > 0)
{
if (mua_wrapper)
{
log_write(0, LOG_MAIN|LOG_PANIC_DIE, "Daemon cannot be run when "
"mua_wrapper is set");
}
+
+# ifndef DISABLE_TLS
+ /* This also checks that the library linkage is working and we can call
+ routines in it, so call even if tls_require_ciphers is unset */
+ {
+# ifdef MEASURE_TIMING
+ struct timeval t0, diff;
+ (void)gettimeofday(&t0, NULL);
+# endif
+ if (!tls_dropprivs_validate_require_cipher(FALSE))
+ exit(1);
+# ifdef MEASURE_TIMING
+ report_time_since(&t0, US"validate_ciphers (delta)");
+# endif
+ }
+#endif
+
daemon_go();
}
the caller. This will get overwritten below for an inetd call. If a trusted
caller has set it empty, unset it. */
-if (sender_ident == NULL) sender_ident = originator_login;
- else if (sender_ident[0] == 0) sender_ident = NULL;
+if (!sender_ident) sender_ident = originator_login;
+else if (!*sender_ident) sender_ident = NULL;
/* Handle the -brw option, which is for checking out rewriting rules. Cause log
writes (on errors) to go to stderr instead. Can't do this earlier, as want the
if (test_rewrite_arg >= 0)
{
- really_exim = FALSE;
+ f.really_exim = FALSE;
if (test_rewrite_arg >= argc)
{
printf("-brw needs an address argument\n");
- exim_exit(EXIT_FAILURE);
+ exim_exit(EXIT_FAILURE, US"main");
}
rewrite_test(argv[test_rewrite_arg]);
- exim_exit(EXIT_SUCCESS);
+ exim_exit(EXIT_SUCCESS, US"main");
}
/* A locally-supplied message is considered to be coming from a local user
unless a trusted caller supplies a sender address with -f, or is passing in the
message via SMTP (inetd invocation or otherwise). */
-if ((sender_address == NULL && !smtp_input) ||
- (!trusted_caller && filter_test == FTEST_NONE))
+if ( !sender_address && !smtp_input
+ || !f.trusted_caller && filter_test == FTEST_NONE)
{
- sender_local = TRUE;
+ f.sender_local = TRUE;
/* A trusted caller can supply authenticated_sender and authenticated_id
via -oMas and -oMai and if so, they will already be set. Otherwise, force
defaults except when host checking. */
- if (authenticated_sender == NULL && !host_checking)
+ if (!authenticated_sender && !host_checking)
authenticated_sender = string_sprintf("%s@%s", originator_login,
qualify_domain_sender);
- if (authenticated_id == NULL && !host_checking)
+ if (!authenticated_id && !host_checking)
authenticated_id = originator_login;
}
specify a sender address for SMTP input, we leave sender_address unset. This
causes the MAIL commands to be honoured. */
-if ((!smtp_input && sender_address == NULL) ||
- !receive_check_set_sender(sender_address))
+if ( !smtp_input && !sender_address
+ || !receive_check_set_sender(sender_address))
{
/* Either the caller is not permitted to set a general sender, or this is
non-SMTP input and the trusted caller has not set a sender. If there is no
if (sender_address == NULL /* No sender_address set */
|| /* OR */
(sender_address[0] != 0 && /* Non-empty sender address, AND */
- !checking && /* Not running tests, AND */
- filter_test == FTEST_NONE)) /* Not testing a filter */
+ !checking)) /* Not running tests, including filter tests */
{
sender_address = originator_login;
- sender_address_forced = FALSE;
+ f.sender_address_forced = FALSE;
sender_address_domain = 0;
}
}
/* Remember whether an untrusted caller set the sender address */
-sender_set_untrusted = sender_address != originator_login && !trusted_caller;
+f.sender_set_untrusted = sender_address != originator_login && !f.trusted_caller;
/* Ensure that the sender address is fully qualified unless it is the empty
address, which indicates an error message, or doesn't exist (root caller, smtp
interface, no -f argument). */
-if (sender_address != NULL && sender_address[0] != 0 &&
- sender_address_domain == 0)
+if (sender_address && *sender_address && sender_address_domain == 0)
sender_address = string_sprintf("%s@%s", local_part_quote(sender_address),
qualify_domain_sender);
stdin. Set debug_level to at least D_v to get full output for address testing.
*/
-if (verify_address_mode || address_test_mode)
+if (verify_address_mode || f.address_test_mode)
{
int exit_value = 0;
int flags = vopt_qualify;
{
while (recipients_arg < argc)
{
- uschar *s = argv[recipients_arg++];
- while (*s != 0)
+ /* Supplied addresses are tainted since they come from a user */
+ uschar * s = string_copy_taint(argv[recipients_arg++], TRUE);
+ while (*s)
{
BOOL finished = FALSE;
uschar *ss = parse_find_address_end(s, FALSE);
test_address(s, flags, &exit_value);
s = ss;
if (!finished)
- while (*(++s) != 0 && (*s == ',' || isspace(*s)));
+ while (*++s == ',' || isspace(*s)) ;
}
}
}
else for (;;)
{
- uschar *s = get_stdinput(NULL, NULL);
- if (s == NULL) break;
- test_address(s, flags, &exit_value);
+ uschar * s = get_stdinput(NULL, NULL);
+ if (!s) break;
+ test_address(string_copy_taint(s, TRUE), flags, &exit_value);
}
route_tidyup();
- exim_exit(exit_value);
+ exim_exit(exit_value, US"main");
}
/* Handle expansion checking. Either expand items on the command line, or read
if (expansion_test)
{
+ dns_init(FALSE, FALSE, FALSE);
if (msg_action_arg > 0 && msg_action == MSG_LOAD)
{
uschar spoolname[256]; /* Not big_buffer; used in spool_read_header() */
- if (!admin_user)
- {
- fprintf(stderr, "exim: permission denied\n");
- exit(EXIT_FAILURE);
- }
+ if (!f.admin_user)
+ exim_fail("exim: permission denied\n");
message_id = argv[msg_action_arg];
(void)string_format(spoolname, sizeof(spoolname), "%s-H", message_id);
- if (!spool_open_datafile(message_id))
+ if ((deliver_datafile = spool_open_datafile(message_id)) < 0)
printf ("Failed to load message datafile %s\n", message_id);
if (spool_read_header(spoolname, TRUE, FALSE) != spool_read_OK)
printf ("Failed to load message %s\n", message_id);
/* Read a test message from a file. We fudge it up to be on stdin, saving
stdin itself for later reading of expansion strings. */
- else if (expansion_test_message != NULL)
+ else if (expansion_test_message)
{
int save_stdin = dup(0);
int fd = Uopen(expansion_test_message, O_RDONLY, 0);
if (fd < 0)
- {
- fprintf(stderr, "exim: failed to open %s: %s\n", expansion_test_message,
+ exim_fail("exim: failed to open %s: %s\n", expansion_test_message,
strerror(errno));
- return EXIT_FAILURE;
- }
(void) dup2(fd, 0);
filter_test = FTEST_USER; /* Fudge to make it look like filter test */
message_ended = END_NOTENDED;
clearerr(stdin); /* Required by Darwin */
}
+ /* Only admin users may see config-file macros this way */
+
+ if (!f.admin_user) macros_user = macros = mlast = NULL;
+
/* Allow $recipients for this testing */
- enable_dollar_recipients = TRUE;
+ f.enable_dollar_recipients = TRUE;
/* Expand command line items */
if (recipients_arg < argc)
- {
while (recipients_arg < argc)
- {
- uschar *s = argv[recipients_arg++];
- uschar *ss = expand_string(s);
- if (ss == NULL) printf ("Failed: %s\n", expand_string_message);
- else printf("%s\n", CS ss);
- }
- }
+ expansion_test_line(argv[recipients_arg++]);
/* Read stdin */
else
{
- char *(*fn_readline)(char *) = NULL;
- char *(*fn_addhist)(char *) = NULL;
+ char *(*fn_readline)(const char *) = NULL;
+ void (*fn_addhist)(const char *) = NULL;
+ uschar * s;
- #ifdef USE_READLINE
+#ifdef USE_READLINE
void *dlhandle = set_readline(&fn_readline, &fn_addhist);
- #endif
+#endif
- for (;;)
- {
- uschar *ss;
- uschar *source = get_stdinput(fn_readline, fn_addhist);
- if (source == NULL) break;
- ss = expand_string(source);
- if (ss == NULL)
- printf ("Failed: %s\n", expand_string_message);
- else printf("%s\n", CS ss);
- }
+ while (s = get_stdinput(fn_readline, fn_addhist))
+ expansion_test_line(s);
- #ifdef USE_READLINE
- if (dlhandle != NULL) dlclose(dlhandle);
- #endif
+#ifdef USE_READLINE
+ if (dlhandle) dlclose(dlhandle);
+#endif
}
/* The data file will be open after -Mset */
deliver_datafile = -1;
}
- exim_exit(EXIT_SUCCESS);
+ exim_exit(EXIT_SUCCESS, US"main: expansion test");
}
uschar *nah = expand_string(raw_active_hostname);
if (nah == NULL)
{
- if (!expand_string_forcedfail)
+ if (!f.expand_string_forcedfail)
log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand \"%s\" "
"(smtp_active_hostname): %s", raw_active_hostname,
expand_string_message);
if (!sender_ident_set)
{
sender_ident = NULL;
- if (running_in_test_harness && sender_host_port != 0 &&
+ if (f.running_in_test_harness && sender_host_port != 0 &&
interface_address != NULL && interface_port != 0)
verify_get_ident(1413);
}
- /* In case the given address is a non-canonical IPv6 address, canonicize
+ /* In case the given address is a non-canonical IPv6 address, canonicalize
it. The code works for both IPv4 and IPv6, as it happens. */
size = host_aton(sender_host_address, x);
- sender_host_address = store_get(48); /* large enough for full IPv6 */
+ sender_host_address = store_get(48, FALSE); /* large enough for full IPv6 */
(void)host_nmtoa(size, x, -1, sender_host_address, ':');
/* Now set up for testing */
smtp_input = TRUE;
smtp_in = stdin;
smtp_out = stdout;
- sender_local = FALSE;
- sender_host_notsocket = TRUE;
+ f.sender_local = FALSE;
+ f.sender_host_notsocket = TRUE;
debug_file = stderr;
debug_fd = fileno(debug_file);
fprintf(stdout, "\n**** SMTP testing session as if from host %s\n"
"**** This is not for real!\n\n",
sender_host_address);
+ memset(sender_host_cache, 0, sizeof(sender_host_cache));
if (verify_check_host(&hosts_connection_nolog) == OK)
- log_write_selector &= ~L_smtp_connection;
+ BIT_CLEAR(log_selector, log_selector_size, Li_smtp_connection);
log_write(L_smtp_connection, LOG_MAIN, "%s", smtp_get_connection_info());
/* NOTE: We do *not* call smtp_log_no_mail() if smtp_start_session() fails,
if (smtp_start_session())
{
- reset_point = store_get(0);
- for (;;)
+ for (; (reset_point = store_mark()); store_reset(reset_point))
{
- store_reset(reset_point);
if (smtp_setup_msg() <= 0) break;
if (!receive_msg(FALSE)) break;
+
+ return_path = sender_address = NULL;
+ dnslist_domain = dnslist_matched = NULL;
+#ifndef DISABLE_DKIM
+ dkim_cur_signer = NULL;
+#endif
+ acl_var_m = NULL;
+ deliver_localpart_orig = NULL;
+ deliver_domain_orig = NULL;
+ callout_address = sending_ip_address = NULL;
+ sender_rate = sender_rate_limit = sender_rate_period = NULL;
}
smtp_log_no_mail();
}
- exim_exit(EXIT_SUCCESS);
+ exim_exit(EXIT_SUCCESS, US"main");
}
/* Arrange for message reception if recipients or SMTP were specified;
otherwise complain unless a version print (-bV) happened or this is a filter
-verification test. In the former case, show the configuration file name. */
+verification test or info dump.
+In the former case, show the configuration file name. */
if (recipients_arg >= argc && !extract_recipients && !smtp_input)
{
if (version_printed)
{
+ if (Ustrchr(config_main_filelist, ':'))
+ printf("Configuration file search path is %s\n", config_main_filelist);
printf("Configuration file is %s\n", config_main_filename);
return EXIT_SUCCESS;
}
- if (filter_test == FTEST_NONE)
+
+ if (info_flag != CMDINFO_NONE)
{
- fprintf(stderr,
-"Exim is a Mail Transfer Agent. It is normally called by Mail User Agents,\n"
-"not directly from a shell command line. Options and/or arguments control\n"
-"what it does when called. For a list of options, see the Exim documentation.\n");
- return EXIT_FAILURE;
+ show_exim_information(info_flag, info_stdout ? stdout : stderr);
+ return info_stdout ? EXIT_SUCCESS : EXIT_FAILURE;
}
+
+ if (filter_test == FTEST_NONE)
+ exim_usage(called_as);
}
if (mua_wrapper)
{
- synchronous_delivery = TRUE;
+ f.synchronous_delivery = TRUE;
arg_error_handling = ERRORS_STDERR;
remote_max_parallel = 1;
deliver_drop_privilege = TRUE;
- queue_smtp = FALSE;
+ f.queue_smtp = FALSE;
queue_smtp_domains = NULL;
+#ifdef SUPPORT_I18N
+ message_utf8_downconvert = -1; /* convert-if-needed */
+#endif
}
logging being sent down the socket and make an identd call to get the
sender_ident. */
-else if (is_inetd)
+else if (f.is_inetd)
{
(void)fclose(stderr);
exim_nullstd(); /* Re-open to /dev/null */
case when it is forced by -oMa. However, we must flag that it isn't a socket,
so that the test for IP options is skipped for -bs input. */
-if (sender_host_address != NULL && sender_fullhost == NULL)
+if (sender_host_address && !sender_fullhost)
{
host_build_sender_fullhost();
set_process_info("handling incoming connection from %s via -oMa",
sender_fullhost);
- sender_host_notsocket = TRUE;
+ f.sender_host_notsocket = TRUE;
}
/* Otherwise, set the sender host as unknown except for inetd calls. This
prevents host checking in the case of -bs not from inetd and also for -bS. */
-else if (!is_inetd) sender_host_unknown = TRUE;
+else if (!f.is_inetd) f.sender_host_unknown = TRUE;
/* If stdout does not exist, then dup stdin to stdout. This can happen
if exim is started from inetd. In this case fd 0 will be set to the socket,
if (smtp_input)
{
- if (!is_inetd) set_process_info("accepting a local %sSMTP message from <%s>",
+ if (!f.is_inetd) set_process_info("accepting a local %sSMTP message from <%s>",
smtp_batched_input? "batched " : "",
(sender_address!= NULL)? sender_address : originator_login);
}
else
{
- if (received_protocol == NULL)
+ int old_pool = store_pool;
+ store_pool = POOL_PERM;
+ if (!received_protocol)
received_protocol = string_sprintf("local%s", called_as);
+ store_pool = old_pool;
set_process_info("accepting a local non-SMTP message from <%s>",
sender_address);
}
-/* Initialize the local_queue-only flag (this will be ignored if mua_wrapper is
-set) */
+/* Initialize the session_local_queue-only flag (this will be ignored if
+mua_wrapper is set) */
queue_check_only();
-local_queue_only = queue_only;
+session_local_queue_only = queue_only;
/* For non-SMTP and for batched SMTP input, check that there is enough space on
the spool if so configured. On failure, we must not attempt to send an error
error code is given.) */
if ((!smtp_input || smtp_batched_input) && !receive_check_fs(0))
- {
- fprintf(stderr, "exim: insufficient disk space\n");
- return EXIT_FAILURE;
- }
+ exim_fail("exim: insufficient disk space\n");
/* If this is smtp input of any kind, real or batched, handle the start of the
SMTP session.
{
smtp_in = stdin;
smtp_out = stdout;
+ memset(sender_host_cache, 0, sizeof(sender_host_cache));
if (verify_check_host(&hosts_connection_nolog) == OK)
- log_write_selector &= ~L_smtp_connection;
+ BIT_CLEAR(log_selector, log_selector_size, Li_smtp_connection);
log_write(L_smtp_connection, LOG_MAIN, "%s", smtp_get_connection_info());
if (!smtp_start_session())
{
mac_smtp_fflush();
- exim_exit(EXIT_SUCCESS);
+ exim_exit(EXIT_SUCCESS, US"smtp_start toplevel");
}
}
else
{
thismessage_size_limit = expand_string_integer(message_size_limit, TRUE);
- if (expand_string_message != NULL)
- {
+ if (expand_string_message)
if (thismessage_size_limit == -1)
log_write(0, LOG_MAIN|LOG_PANIC_DIE, "failed to expand "
"message_size_limit: %s", expand_string_message);
else
log_write(0, LOG_MAIN|LOG_PANIC_DIE, "invalid value for "
"message_size_limit: %s", expand_string_message);
- }
}
/* Loop for several messages when reading SMTP input. If we fork any child
of Linux (where SIG_IGN does work) that are picky. If, having set SIG_IGN, a
process then calls waitpid(), a grumble is written to the system log, because
this is logically inconsistent. In other words, it doesn't like the paranoia.
-As a consequenc of this, the waitpid() below is now excluded if we are sure
+As a consequence of this, the waitpid() below is now excluded if we are sure
that SIG_IGN works. */
-if (!synchronous_delivery)
+if (!f.synchronous_delivery)
{
#ifdef SA_NOCLDWAIT
struct sigaction act;
/* Save the current store pool point, for resetting at the start of
each message, and save the real sender address, if any. */
-reset_point = store_get(0);
real_sender_address = sender_address;
/* Loop to receive messages; receive_msg() returns TRUE if there are more
while (more)
{
- store_reset(reset_point);
+ reset_point = store_mark();
message_id[0] = 0;
/* Handle the SMTP case; call smtp_setup_mst() to deal with the initial SMTP
if (smtp_batched_input && acl_not_smtp_start != NULL)
{
uschar *user_msg, *log_msg;
- enable_dollar_recipients = TRUE;
+ f.enable_dollar_recipients = TRUE;
(void)acl_check(ACL_WHERE_NOTSMTP_START, NULL, acl_not_smtp_start,
&user_msg, &log_msg);
- enable_dollar_recipients = FALSE;
+ f.enable_dollar_recipients = FALSE;
}
/* Now get the data for the message */
more = receive_msg(extract_recipients);
if (message_id[0] == 0)
{
- if (more) continue;
+ cancel_cutthrough_connection(TRUE, US"receive dropped");
+ if (more) goto moreloop;
smtp_log_no_mail(); /* Log no mail if configured */
- exim_exit(EXIT_FAILURE);
+ exim_exit(EXIT_FAILURE, US"receive toplevel");
}
}
else
{
+ cancel_cutthrough_connection(TRUE, US"message setup dropped");
smtp_log_no_mail(); /* Log no mail if configured */
- exim_exit((rc == 0)? EXIT_SUCCESS : EXIT_FAILURE);
+ exim_exit(rc ? EXIT_FAILURE : EXIT_SUCCESS, US"msg setup toplevel");
}
}
else
{
- int i;
int rcount = 0;
int count = argc - recipients_arg;
uschar **list = argv + recipients_arg;
/* These options cannot be changed dynamically for non-SMTP messages */
- active_local_sender_retain = local_sender_retain;
- active_local_from_check = local_from_check;
+ f.active_local_sender_retain = local_sender_retain;
+ f.active_local_from_check = local_from_check;
/* Save before any rewriting */
raw_sender = string_copy(sender_address);
- /* Loop for each argument */
+ /* Loop for each argument (supplied by user hence tainted) */
- for (i = 0; i < count; i++)
+ for (int i = 0; i < count; i++)
{
int start, end, domain;
- uschar *errmess;
- uschar *s = list[i];
+ uschar * errmess;
+ uschar * s = string_copy_taint(list[i], TRUE);
/* Loop for each comma-separated address */
if (recipients_max > 0 && ++rcount > recipients_max &&
!extract_recipients)
- {
if (error_handling == ERRORS_STDERR)
{
fprintf(stderr, "exim: too many recipients\n");
- exim_exit(EXIT_FAILURE);
+ exim_exit(EXIT_FAILURE, US"main");
}
else
- {
return
moan_to_sender(ERRMESS_TOOMANYRECIP, NULL, NULL, stdin, TRUE)?
errors_sender_rc : EXIT_FAILURE;
- }
- }
+#ifdef SUPPORT_I18N
+ {
+ BOOL b = allow_utf8_domains;
+ allow_utf8_domains = TRUE;
+#endif
recipient =
parse_extract_address(s, &errmess, &start, &end, &domain, FALSE);
- if (domain == 0 && !allow_unqualified_recipient)
+#ifdef SUPPORT_I18N
+ if (string_is_utf8(recipient))
+ message_smtputf8 = TRUE;
+ else
+ allow_utf8_domains = b;
+ }
+#endif
+ if (domain == 0 && !f.allow_unqualified_recipient)
{
recipient = NULL;
errmess = US"unqualified recipient address not allowed";
{
fprintf(stderr, "exim: bad recipient address \"%s\": %s\n",
string_printing(list[i]), errmess);
- exim_exit(EXIT_FAILURE);
+ exim_exit(EXIT_FAILURE, US"main");
}
else
{
}
}
- receive_add_recipient(recipient, -1);
+ receive_add_recipient(string_copy_taint(recipient, TRUE), -1);
s = ss;
if (!finished)
while (*(++s) != 0 && (*s == ',' || isspace(*s)));
DEBUG(D_receive)
{
- int i;
if (sender_address != NULL) debug_printf("Sender: %s\n", sender_address);
if (recipients_list != NULL)
{
debug_printf("Recipients:\n");
- for (i = 0; i < recipients_count; i++)
+ for (int i = 0; i < recipients_count; i++)
debug_printf(" %s\n", recipients_list[i].address);
}
}
ignored; rejecting here would just add complication, and it can just as
well be done later. Allow $recipients to be visible in the ACL. */
- if (acl_not_smtp_start != NULL)
+ if (acl_not_smtp_start)
{
uschar *user_msg, *log_msg;
- enable_dollar_recipients = TRUE;
+ f.enable_dollar_recipients = TRUE;
(void)acl_check(ACL_WHERE_NOTSMTP_START, NULL, acl_not_smtp_start,
&user_msg, &log_msg);
- enable_dollar_recipients = FALSE;
+ f.enable_dollar_recipients = FALSE;
+ }
+
+ /* Pause for a while waiting for input. If none received in that time,
+ close the logfile, if we had one open; then if we wait for a long-running
+ datasource (months, in one use-case) log rotation will not leave us holding
+ the file copy. */
+
+ if (!receive_timeout)
+ {
+ struct timeval t = { .tv_sec = 30*60, .tv_usec = 0 }; /* 30 minutes */
+ fd_set r;
+
+ FD_ZERO(&r); FD_SET(0, &r);
+ if (select(1, &r, NULL, NULL, &t) == 0) mainlog_close();
}
/* Read the data for the message. If filter_test is not FTEST_NONE, this
for real; when reading the headers of a message for filter testing,
it is TRUE if the headers were terminated by '.' and FALSE otherwise. */
- if (message_id[0] == 0) exim_exit(EXIT_FAILURE);
+ if (message_id[0] == 0) exim_exit(EXIT_FAILURE, US"main");
} /* Non-SMTP message reception */
/* If this is a filter testing run, there are headers in store, but
return_path = string_copy(sender_address);
}
else
- {
printf("Return-path = %s\n", (return_path[0] == 0)? US"<>" : return_path);
- }
printf("Sender = %s\n", (sender_address[0] == 0)? US"<>" : sender_address);
receive_add_recipient(
if (ftest_prefix != NULL) printf("Prefix = %s\n", ftest_prefix);
if (ftest_suffix != NULL) printf("Suffix = %s\n", ftest_suffix);
- (void)chdir("/"); /* Get away from wherever the user is running this from */
+ if (chdir("/")) /* Get away from wherever the user is running this from */
+ {
+ DEBUG(D_receive) debug_printf("chdir(\"/\") failed\n");
+ exim_exit(EXIT_FAILURE, US"main");
+ }
/* Now we run either a system filter test, or a user filter test, or both.
In the latter case, headers added by the system filter will persist and be
explicitly. */
if ((filter_test & FTEST_SYSTEM) != 0)
- {
if (!filter_runtest(filter_sfd, filter_test_sfile, TRUE, more))
- exim_exit(EXIT_FAILURE);
- }
+ exim_exit(EXIT_FAILURE, US"main");
memcpy(filter_sn, filter_n, sizeof(filter_sn));
if ((filter_test & FTEST_USER) != 0)
- {
if (!filter_runtest(filter_ufd, filter_test_ufile, FALSE, more))
- exim_exit(EXIT_FAILURE);
- }
+ exim_exit(EXIT_FAILURE, US"main");
- exim_exit(EXIT_SUCCESS);
+ exim_exit(EXIT_SUCCESS, US"main");
}
/* Else act on the result of message reception. We should not get here unless
- message_id[0] is non-zero. If queue_only is set, local_queue_only will be
- TRUE. If it is not, check on the number of messages received in this
- connection. If that's OK and queue_only_load is set, check that the load
- average is below it. If it is not, set local_queue_only TRUE. Note that it
- then remains this way for any subsequent messages on the same SMTP connection.
- This is a deliberate choice; even though the load average may fall, it
- doesn't seem right to deliver later messages on the same call when not
- delivering earlier ones. */
-
- if (!local_queue_only)
+ message_id[0] is non-zero. If queue_only is set, session_local_queue_only
+ will be TRUE. If it is not, check on the number of messages received in this
+ connection. */
+
+ if (!session_local_queue_only &&
+ smtp_accept_queue_per_connection > 0 &&
+ receive_messagecount > smtp_accept_queue_per_connection)
{
- if (smtp_accept_queue_per_connection > 0 &&
- receive_messagecount > smtp_accept_queue_per_connection)
- {
- local_queue_only = TRUE;
- queue_only_reason = 2;
- }
- else if (queue_only_load >= 0)
+ session_local_queue_only = TRUE;
+ queue_only_reason = 2;
+ }
+
+ /* Initialize local_queue_only from session_local_queue_only. If it is false,
+ and queue_only_load is set, check that the load average is below it. If it is
+ not, set local_queue_only TRUE. If queue_only_load_latch is true (the
+ default), we put the whole session into queue_only mode. It then remains this
+ way for any subsequent messages on the same SMTP connection. This is a
+ deliberate choice; even though the load average may fall, it doesn't seem
+ right to deliver later messages on the same call when not delivering earlier
+ ones. However, there are odd cases where this is not wanted, so this can be
+ changed by setting queue_only_load_latch false. */
+
+ local_queue_only = session_local_queue_only;
+ if (!local_queue_only && queue_only_load >= 0)
+ {
+ local_queue_only = (load_average = OS_GETLOADAVG()) > queue_only_load;
+ if (local_queue_only)
{
- local_queue_only = (load_average = os_getloadavg()) > queue_only_load;
- if (local_queue_only) queue_only_reason = 3;
+ queue_only_reason = 3;
+ if (queue_only_load_latch) session_local_queue_only = TRUE;
}
}
are ignored. */
if (mua_wrapper)
- local_queue_only = queue_only_policy = deliver_freeze = FALSE;
+ local_queue_only = f.queue_only_policy = f.deliver_freeze = FALSE;
/* Log the queueing here, when it will get a message id attached, but
not if queue_only is set (case 0). Case 1 doesn't happen here (too many
connections). */
- if (local_queue_only) switch(queue_only_reason)
+ if (local_queue_only)
{
- case 2:
- log_write(L_delay_delivery,
- LOG_MAIN, "no immediate delivery: more than %d messages "
- "received in one connection", smtp_accept_queue_per_connection);
- break;
-
- case 3:
- log_write(L_delay_delivery,
- LOG_MAIN, "no immediate delivery: load average %.2f",
- (double)load_average/1000.0);
- break;
+ cancel_cutthrough_connection(TRUE, US"no delivery; queueing");
+ switch(queue_only_reason)
+ {
+ case 2:
+ log_write(L_delay_delivery,
+ LOG_MAIN, "no immediate delivery: more than %d messages "
+ "received in one connection", smtp_accept_queue_per_connection);
+ break;
+
+ case 3:
+ log_write(L_delay_delivery,
+ LOG_MAIN, "no immediate delivery: load average %.2f",
+ (double)load_average/1000.0);
+ break;
+ }
}
+ else if (f.queue_only_policy || f.deliver_freeze)
+ cancel_cutthrough_connection(TRUE, US"no delivery; queueing");
+
/* Else do the delivery unless the ACL or local_scan() called for queue only
or froze the message. Always deliver in a separate process. A fork failure is
not a disaster, as the delivery will eventually happen on a subsequent queue
thereby defer the delivery if it tries to use (for example) a cached ldap
connection that the parent has called unbind on. */
- else if (!queue_only_policy && !deliver_freeze)
+ else
{
pid_t pid;
search_tidyup();
if (geteuid() != root_uid && !deliver_drop_privilege && !unprivileged)
{
- (void)child_exec_exim(CEE_EXEC_EXIT, FALSE, NULL, FALSE, 2, US"-Mc",
- message_id);
+ delivery_re_exec(CEE_EXEC_EXIT);
/* Control does not return here. */
}
rc = deliver_message(message_id, FALSE, FALSE);
search_tidyup();
- _exit((!mua_wrapper || rc == DELIVER_MUA_SUCCEEDED)?
- EXIT_SUCCESS : EXIT_FAILURE);
+ exim_underbar_exit(!mua_wrapper || rc == DELIVER_MUA_SUCCEEDED
+ ? EXIT_SUCCESS : EXIT_FAILURE);
}
if (pid < 0)
{
+ cancel_cutthrough_connection(TRUE, US"delivery fork failed");
log_write(0, LOG_MAIN|LOG_PANIC, "failed to fork automatic delivery "
"process: %s", strerror(errno));
}
-
- /* In the parent, wait if synchronous delivery is required. This will
- always be the case in MUA wrapper mode. */
-
- else if (synchronous_delivery)
+ else
{
- int status;
- while (wait(&status) != pid);
- if ((status & 0x00ff) != 0)
- log_write(0, LOG_MAIN|LOG_PANIC,
- "process %d crashed with signal %d while delivering %s",
- (int)pid, status & 0x00ff, message_id);
- if (mua_wrapper && (status & 0xffff) != 0) exim_exit(EXIT_FAILURE);
+ release_cutthrough_connection(US"msg passed for delivery");
+
+ /* In the parent, wait if synchronous delivery is required. This will
+ always be the case in MUA wrapper mode. */
+
+ if (f.synchronous_delivery)
+ {
+ int status;
+ while (wait(&status) != pid);
+ if ((status & 0x00ff) != 0)
+ log_write(0, LOG_MAIN|LOG_PANIC,
+ "process %d crashed with signal %d while delivering %s",
+ (int)pid, status & 0x00ff, message_id);
+ if (mua_wrapper && (status & 0xffff) != 0) exim_exit(EXIT_FAILURE, US"main");
+ }
}
}
#ifndef SIG_IGN_WORKS
while (waitpid(-1, NULL, WNOHANG) > 0);
#endif
+
+moreloop:
+ return_path = sender_address = NULL;
+ authenticated_sender = NULL;
+ deliver_localpart_orig = NULL;
+ deliver_domain_orig = NULL;
+ deliver_host = deliver_host_address = NULL;
+ dnslist_domain = dnslist_matched = NULL;
+#ifdef WITH_CONTENT_SCAN
+ malware_name = NULL;
+#endif
+ callout_address = NULL;
+ sending_ip_address = NULL;
+ acl_var_m = NULL;
+ for(int i = 0; i < REGEX_VARS; i++) regex_vars[i] = NULL;
+
+ store_reset(reset_point);
}
-exim_exit(EXIT_SUCCESS); /* Never returns */
+exim_exit(EXIT_SUCCESS, US"main"); /* Never returns */
return 0; /* To stop compiler warning */
}
+
/* End of exim.c */
git://git.exim.org / exim.git / blobdiff