* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2016 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
/* See the file NOTICE for conditions of use and distribution. */
#include "exim.h"
-#ifdef __GLIBC__
+#if defined(__GLIBC__) && !defined(__UCLIBC__)
# include <gnu/libc-version.h>
#endif
va_end(ap);
}
+/***********************************************
+* Handler for SIGTERM *
+***********************************************/
+static void
+term_handler(int sig)
+{
+ exit(1);
+}
/*************************************************
os_restarting_signal(sig, usr1_handler);
-fd = Uopen(process_log_path, O_APPEND|O_WRONLY, LOG_MODE);
-if (fd < 0)
+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
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;
/* 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
{
if (smtp_input)
{
- #ifdef SUPPORT_TLS
- tls_close(TRUE, FALSE); /* Shut down the TLS library */
- #endif
+#ifdef SUPPORT_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;
*/
void
-exim_exit(int rc)
+exim_exit(int rc, const uschar * process)
{
search_tidyup();
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);
}
* Show supported features *
*************************************************/
-/* This function is called for -bV/--version and for -d to output the optional
-features of the current Exim binary.
-
-Arguments: a FILE for printing
-Returns: nothing
-*/
-
static void
-show_whats_supported(FILE *f)
+show_db_version(FILE * f)
{
- auth_info *authi;
-
#ifdef DB_VERSION_STRING
-fprintf(f, "Berkeley DB: %s\n", DB_VERSION_STRING);
+DEBUG(D_any)
+ {
+ fprintf(f, "Library version: BDB: Compile: %s\n", DB_VERSION_STRING);
+ fprintf(f, " Runtime: %s\n",
+ db_version(NULL, NULL, NULL));
+ }
+else
+ 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.
+
+Arguments: a FILE for printing
+Returns: nothing
+*/
+
+static void
+show_whats_supported(FILE * f)
+{
+auth_info * authi;
+
+DEBUG(D_any) {} else show_db_version(f);
fprintf(f, "Support for:");
#ifdef SUPPORT_CRYPTEQ
fprintf(f, " TCPwrappers");
#endif
#ifdef SUPPORT_TLS
- #ifdef USE_GNUTLS
+# ifdef USE_GNUTLS
fprintf(f, " GnuTLS");
- #else
+# else
fprintf(f, " OpenSSL");
- #endif
+# endif
#endif
#ifdef SUPPORT_TRANSLATE_IP_ADDRESS
fprintf(f, " translate_ip_address");
#ifdef WITH_CONTENT_SCAN
fprintf(f, " Content_Scanning");
#endif
+#ifdef SUPPORT_DANE
+ fprintf(f, " DANE");
+#endif
#ifndef DISABLE_DKIM
fprintf(f, " DKIM");
#endif
#ifdef SUPPORT_SOCKS
fprintf(f, " SOCKS");
#endif
+#ifdef SUPPORT_SPF
+ fprintf(f, " SPF");
+#endif
+#ifdef TCP_FASTOPEN
+ deliver_init();
+ if (tcp_fastopen_ok) fprintf(f, " TCP_Fast_Open");
+#endif
#ifdef EXPERIMENTAL_LMDB
fprintf(f, " Experimental_LMDB");
#endif
#ifdef EXPERIMENTAL_QUEUEFILE
fprintf(f, " Experimental_QUEUEFILE");
#endif
-#ifdef EXPERIMENTAL_SPF
- fprintf(f, " Experimental_SPF");
-#endif
#ifdef EXPERIMENTAL_SRS
fprintf(f, " Experimental_SRS");
#endif
+#ifdef EXPERIMENTAL_ARC
+ fprintf(f, " Experimental_ARC");
+#endif
#ifdef EXPERIMENTAL_BRIGHTMAIL
fprintf(f, " Experimental_Brightmail");
#endif
-#ifdef EXPERIMENTAL_DANE
- fprintf(f, " Experimental_DANE");
-#endif
#ifdef EXPERIMENTAL_DCC
fprintf(f, " Experimental_DCC");
#endif
#endif
fprintf(f, "\n");
-fprintf(f, "Authenticators:");
-#ifdef AUTH_CRAM_MD5
- fprintf(f, " cram_md5");
-#endif
-#ifdef AUTH_CYRUS_SASL
- fprintf(f, " cyrus_sasl");
-#endif
-#ifdef AUTH_DOVECOT
- fprintf(f, " dovecot");
-#endif
-#ifdef AUTH_GSASL
- fprintf(f, " gsasl");
-#endif
-#ifdef AUTH_HEIMDAL_GSSAPI
- fprintf(f, " heimdal_gssapi");
-#endif
-#ifdef AUTH_PLAINTEXT
- fprintf(f, " plaintext");
-#endif
-#ifdef AUTH_SPA
- fprintf(f, " spa");
-#endif
-#ifdef AUTH_TLS
- fprintf(f, " tls");
-#endif
-fprintf(f, "\n");
+auth_show_supported(f);
+route_show_supported(f);
+transport_show_supported(f);
-fprintf(f, "Routers:");
-#ifdef ROUTER_ACCEPT
- fprintf(f, " accept");
-#endif
-#ifdef ROUTER_DNSLOOKUP
- fprintf(f, " dnslookup");
-#endif
-#ifdef ROUTER_IPLITERAL
- fprintf(f, " ipliteral");
-#endif
-#ifdef ROUTER_IPLOOKUP
- fprintf(f, " iplookup");
-#endif
-#ifdef ROUTER_MANUALROUTE
- fprintf(f, " manualroute");
-#endif
-#ifdef ROUTER_QUERYPROGRAM
- fprintf(f, " queryprogram");
-#endif
-#ifdef ROUTER_REDIRECT
- fprintf(f, " redirect");
-#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
-#endif
-#ifdef TRANSPORT_AUTOREPLY
- fprintf(f, " autoreply");
-#endif
-#ifdef TRANSPORT_LMTP
- fprintf(f, " lmtp");
-#endif
-#ifdef TRANSPORT_PIPE
- fprintf(f, " pipe");
-#endif
-#ifdef EXPERIMENTAL_QUEUEFILE
- fprintf(f, " queuefile");
-#endif
-#ifdef TRANSPORT_SMTP
- fprintf(f, " smtp");
+#ifdef WITH_CONTENT_SCAN
+malware_show_supported(f);
#endif
-fprintf(f, "\n");
if (fixed_never_users[0] > 0)
{
fprintf(f, "%d\n", (unsigned int)fixed_never_users[i]);
}
+fprintf(f, "Configure owner: %d:%d\n", config_uid, config_gid);
+
fprintf(f, "Size of off_t: " SIZE_T_FMT "\n", sizeof(off_t));
/* Everything else is details which are only worth reporting when debugging.
fprintf(f, "Compiler: <unknown>\n");
#endif
-#ifdef __GLIBC__
+#if defined(__GLIBC__) && !defined(__UCLIBC__)
fprintf(f, "Library version: Glibc: Compile: %d.%d\n",
__GLIBC__, __GLIBC_MINOR__);
if (__GLIBC_PREREQ(2, 1))
gnu_get_libc_version());
#endif
+show_db_version(f);
+
#ifdef SUPPORT_TLS
tls_version_report(f);
#endif
"If the string is not recognised, you'll get this help (on stderr).\n"
"\n"
" exim -bI:help this information\n"
-" exim -bI:dscp dscp value keywords known\n"
-" exim -bI:sieve list of supported sieve extensions, one per line.\n"
+" exim -bI:dscp list of known dscp value keywords\n"
+" exim -bI:sieve list of supported sieve extensions\n"
);
return;
case CMDINFO_SIEVE:
local_part_quote(uschar *lpart)
{
BOOL needs_quote = FALSE;
-int size, ptr;
-uschar *yield;
+gstring * g;
uschar *t;
for (t = lpart; !needs_quote && *t != 0; t++)
if (!needs_quote) return lpart;
-size = ptr = 0;
-yield = string_catn(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);
+ g = string_cat(g, lpart);
break;
}
- yield = string_catn(yield, &size, &ptr, lpart, nq - lpart);
- yield = string_catn(yield, &size, &ptr, US"\\", 1);
- yield = string_catn(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_catn(yield, &size, &ptr, US"\"", 1);
-yield[ptr] = 0;
-return yield;
+g = string_catn(g, US"\"", 1);
+return string_from_gstring(g);
}
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++)
{
while (p < ss && isspace(*p)) p++; /* leading space after cont */
}
- yield = string_catn(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
- /* yield can only be NULL if ss==p */
- if (ss == p || yield[ptr-1] != '\\')
- {
- if (yield) yield[ptr] = 0;
+ /* g can only be NULL if ss==p */
+ if (ss == p || g->s[g->ptr-1] != '\\')
break;
- }
- yield[--ptr] = 0;
+
+ --g->ptr;
+ (void) string_from_gstring(g);
}
-if (yield == NULL) printf("\n");
-return yield;
+if (!g) printf("\n");
+return string_from_gstring(g);
}
exim_usage(uschar *progname)
{
-/* Handle specific program invocation varients */
+/* Handle specific program invocation variants */
if (Ustrcmp(progname, US"-mailq") == 0)
{
fprintf(stderr,
/* The list of commandline macros should be very short.
Accept the N*M complexity. */
-for (m = macros; m; m = m->next) if (m->command_line)
+for (m = macros_user; m; m = m->next) if (m->command_line)
{
found = FALSE;
for (w = whites; *w; ++w)
}
if (!found)
return FALSE;
- if (m->replacement == NULL)
+ if (!m->replacement)
continue;
- len = Ustrlen(m->replacement);
- if (len == 0)
+ if ((len = m->replen) == 0)
continue;
n = pcre_exec(regex_whitelisted_macro, NULL, CS m->replacement, len,
0, PCRE_EOPT, NULL, 0);
}
+/*************************************************
+* 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);
+}
+
+
/*************************************************
* Entry point and high-level code *
*************************************************/
running_in_test_harness =
*running_status == '<' && Ustrcmp(running_status, "<<<testing>>>") == 0;
+if (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
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. */
break;
}
- /* An option consistion of -- terminates the options */
+ /* An option consisting of -- terminates the options */
if (Ustrcmp(arg, "--") == 0)
{
#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)
while (isspace(*s)) s++;
}
- for (m = macros; m; 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);
}
- m = macro_create(name, s, TRUE, FALSE);
+ m = macro_create(name, s, TRUE);
if (clmacro_count >= MAX_CLMACROS)
{
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
+ {
+ fprintf(stderr, "exim: getsockname() failed after -MC option: %s\n",
+ strerror(errno));
+ return EXIT_FAILURE;
+ }
if (running_in_test_harness) millisleep(500);
break;
else if (*argrest == 'C' && argrest[1] && !argrest[2])
{
- switch(argrest[1])
+ 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
/* -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 |= PEER_OFFERED_DSN; break;
+ case 'D': smtp_peer_options |= OPTION_DSN; break;
/* -MCG: set the queue name, to a non-default value */
/* -MCK: the peer offered CHUNKING. Must precede -MC */
- case 'K': smtp_peer_options |= PEER_OFFERED_CHUNKING; break;
+ 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) */
- case 'P': smtp_peer_options |= PEER_OFFERED_PIPE; 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
/* -MCS: set the smtp_use_size flag; this is useful only when it
precedes -MC (see above) */
- case 'S': smtp_peer_options |= PEER_OFFERED_SIZE; break;
+ case 'S': smtp_peer_options |= OPTION_SIZE; break;
#ifdef SUPPORT_TLS
+ /* -MCt: similar to -MCT below but the connection is still open
+ via a proxy proces 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. */
- case 'T': smtp_peer_options |= PEER_OFFERED_TLS; break;
+ case 'T': smtp_peer_options |= OPTION_TLS; break;
#endif
default: badarg = TRUE; break;
/* -oMr: Received protocol */
- else if (Ustrcmp(argrest, "Mr") == 0) received_protocol = argv[++i];
+ else if (Ustrcmp(argrest, "Mr") == 0)
+
+ if (received_protocol)
+ {
+ fprintf(stderr, "received_protocol is set already\n");
+ exit(EXIT_FAILURE);
+ }
+ else received_protocol = argv[++i];
/* -oMs: Set sender host name */
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, ':');
- if (hn == NULL)
+ uschar *hn;
+
+ if (received_protocol)
{
- received_protocol = argrest;
+ fprintf(stderr, "received_protocol is set already\n");
+ exit(EXIT_FAILURE);
}
+
+ 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;
}
}
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 */
-if ((initial_cwd = os_getcwd(NULL, 0)) == NULL)
- {
- perror("exim: can't get the current working directory");
- exit(EXIT_FAILURE);
- }
+/* 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 -
readconf_main(checking || list_options);
+
/* Now in directory "/" */
if (cleanup_environment() == FALSE)
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++)
+ for (i = 0; i < group_count && !admin_user; i++)
+ if (group_list[i] == exim_gid)
+ admin_user = TRUE;
+ else if (admin_groups)
+ for (j = 1; j <= (int)admin_groups[0] && !admin_user; j++)
if (admin_groups[j] == group_list[i])
- { admin_user = TRUE; break; }
- }
- if (admin_user) break;
- }
+ admin_user = TRUE;
}
/* Another group of privileged users are the trusted users. These are root,
{
int i, j;
- if (trusted_users != NULL)
- {
- for (i = 1; i <= (int)(trusted_users[0]); i++)
+ if (trusted_users)
+ for (i = 1; i <= (int)trusted_users[0] && !trusted_caller; i++)
if (trusted_users[i] == real_uid)
- { trusted_caller = TRUE; break; }
- }
+ trusted_caller = TRUE;
- if (!trusted_caller && trusted_groups != NULL)
- {
- for (i = 1; i <= (int)(trusted_groups[0]); i++)
- {
+ if (trusted_groups)
+ for (i = 1; i <= (int)trusted_groups[0] && !trusted_caller; i++)
if (trusted_groups[i] == real_gid)
trusted_caller = TRUE;
- else for (j = 0; j < group_count; j++)
- {
+ else for (j = 0; j < group_count && !trusted_caller; j++)
if (trusted_groups[i] == group_list[j])
- { trusted_caller = TRUE; break; }
- }
- if (trusted_caller) break;
- }
- }
+ trusted_caller = TRUE;
}
+/* At this point, we know if the user is privileged and some command-line
+options become possibly impermissible, depending upon the configuration file. */
+
+if (checking && commandline_checks_require_admin && !admin_user) {
+ fprintf(stderr, "exim: those command-line flags are set to require admin\n");
+ exit(EXIT_FAILURE);
+}
+
/* Handle the decoding of logging options. */
decode_bits(log_selector, log_selector_size, log_notall,
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 || LOGGING(arguments))
- && really_exim && !list_options && !checking)
+if ( (debug_selector & D_any || LOGGING(arguments))
+ && really_exim && !list_options && !checking)
{
int i;
uschar *p = big_buffer;
Ustrcpy(p, "cwd= (failed)");
- Ustrncpy(p + 4, initial_cwd, big_buffer_size-5);
+ 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';
+ }
- while (*p) p++;
(void)string_format(p, big_buffer_size - (p - big_buffer), " %d args:", argc);
while (*p) p++;
for (i = 0; i < argc; i++)
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 (LOGGING(arguments))
int dummy;
(void)directory_make(spool_directory, US"", SPOOL_DIRECTORY_MODE, FALSE);
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*
(msg_action_arg < 0 || /* and */
msg_action != MSG_DELIVER) && /* not delivering and */
(!checking || !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. */
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))
{
fprintf(stderr,
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 (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("auth_failed ");
else printf("* ");
- for (r = yield->rules; r != NULL; r = r->next)
+ for (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 (list_options)
{
+ BOOL fail = FALSE;
set_process_info("listing variables");
- if (recipients_arg >= argc) readconf_print(US"all", NULL, flag_n);
- 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 ||
- Ustrcmp(argv[i], "macro") == 0 ||
- Ustrcmp(argv[i], "environment") == 0))
- {
- readconf_print(argv[i+1], argv[i], flag_n);
- i++;
- }
- else readconf_print(argv[i], NULL, flag_n);
+ 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");
- readconf_print(US"config", NULL, flag_n);
- exim_exit(EXIT_SUCCESS);
+ exim_exit(readconf_print(US"config", NULL, flag_n)
+ ? EXIT_SUCCESS : EXIT_FAILURE, US"main");
}
if (prod_requires_admin && !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;
{
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");
}
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 || (!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);
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
}
route_tidyup();
- exim_exit(exit_value);
+ exim_exit(exit_value, US"main");
}
/* Handle expansion checking. Either expand items on the command line, or read
/* 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);
clearerr(stdin); /* Required by Darwin */
}
+ /* Only admin users may see config-file macros this way */
+
+ if (!admin_user) macros_user = macros = mlast = NULL;
+
/* Allow $recipients for this testing */
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 */
{
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");
}
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);
if (smtp_start_session())
{
- reset_point = store_get(0);
- for (;;)
+ for (reset_point = store_get(0); ; 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");
}
{
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;
}
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",
}
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);
}
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)
while (more)
{
- store_reset(reset_point);
message_id[0] = 0;
/* Handle the SMTP case; call smtp_setup_mst() to deal with the initial SMTP
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");
}
}
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
{
{
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
{
if (!receive_timeout)
{
- struct timeval t = { 30*60, 0 }; /* 30 minutess */
+ struct timeval t = { .tv_sec = 30*60, .tv_usec = 0 }; /* 30 minutes */
fd_set r;
FD_ZERO(&r); FD_SET(0, &r);
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
if (chdir("/")) /* Get away from wherever the user is running this from */
{
DEBUG(D_receive) debug_printf("chdir(\"/\") failed\n");
- exim_exit(EXIT_FAILURE);
+ exim_exit(EXIT_FAILURE, US"main");
}
/* Now we run either a system filter test, or a user filter test, or both.
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
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;
+ 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;
+ case 3:
+ log_write(L_delay_delivery,
+ LOG_MAIN, "no immediate delivery: load average %.2f",
+ (double)load_average/1000.0);
+ break;
+ }
}
+ else if (queue_only_policy || 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. */
}
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));
}
+ else
+ {
+ 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. */
+ /* In the parent, wait if synchronous delivery is required. This will
+ always be the case in MUA wrapper mode. */
- else if (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);
+ if (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;
+ { int i; for(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