X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/921b12ca0c361b9c543368edf057712afa02ca14..d185889f47b9b27088e777f7d382295c51271586:/src/src/exim.c diff --git a/src/src/exim.c b/src/src/exim.c index 345555602..42cb710eb 100644 --- a/src/src/exim.c +++ b/src/src/exim.c @@ -1,10 +1,8 @@ -/* $Cambridge: exim/src/src/exim.c,v 1.71 2010/06/07 00:12:42 pdp Exp $ */ - /************************************************* * Exim - an Internet mail transport agent * *************************************************/ -/* Copyright (c) University of Cambridge 1995 - 2009 */ +/* Copyright (c) University of Cambridge 1995 - 2016 */ /* See the file NOTICE for conditions of use and distribution. */ @@ -14,6 +12,17 @@ Also a few functions that don't naturally fit elsewhere. */ #include "exim.h" +#if defined(__GLIBC__) && !defined(__UCLIBC__) +# include +#endif + +#ifdef USE_GNUTLS +# include +# if GNUTLS_VERSION_NUMBER < 0x030103 && !defined(DISABLE_OCSP) +# define DISABLE_OCSP +# endif +#endif + extern void init_lookup_list(void); @@ -54,6 +63,16 @@ store_free(block); +/************************************************* +* Enums for cmdline interface * +*************************************************/ + +enum commandline_info { CMDINFO_NONE=0, + CMDINFO_HELP, CMDINFO_SIEVE, CMDINFO_DSCP }; + + + + /************************************************* * Compile regular expression and panic on fail * *************************************************/ @@ -73,7 +92,7 @@ Returns: pointer to the compiled pattern */ 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; @@ -85,7 +104,7 @@ if (use_malloc) 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, (const char **)&error, &offset, NULL); pcre_malloc = function_store_get; pcre_free = function_dummy_free; if (yield == NULL) @@ -116,10 +135,11 @@ Returns: TRUE or FALSE */ 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, +uschar * s = string_copy(subject); /* de-constifying */ +int n = pcre_exec(re, NULL, CS s, Ustrlen(s), 0, PCRE_EOPT | options, ovector, sizeof(ovector)/sizeof(int)); BOOL yield = n >= 0; if (n == 0) n = EXPAND_MAXN + 1; @@ -129,7 +149,7 @@ if (yield) expand_nmax = (setup < 0)? 0 : setup + 1; for (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--; @@ -154,10 +174,8 @@ Returns: nothing void set_process_info(const char *format, ...) { -int len; +int len = sprintf(CS process_info, "%5d ", (int)getpid()); 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 - 2, format, ap)) Ustrcpy(process_info + len, "**** string overflowed buffer ****"); @@ -259,6 +277,10 @@ will wait for ever, so we panic in this instance. (There was a case of this 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 100us; 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 */ @@ -268,6 +290,9 @@ milliwait(struct itimerval *itval) { sigset_t sigmask; sigset_t old_sigmask; + +if (itval->it_value.tv_usec < 100 && 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 */ @@ -340,7 +365,7 @@ return 0; /* 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 @@ -390,10 +415,11 @@ if (exim_tvcmp(&now_tv, then_tv) <= 0) { if (!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", + then_tv->tv_sec, (long) then_tv->tv_usec, + now_tv.tv_sec, (long) now_tv.tv_usec); + debug_printf("waiting " TIME_T_FMT ".%06lu\n", + itval.it_value.tv_sec, (long) itval.it_value.tv_usec); } } @@ -518,7 +544,7 @@ close_unwanted(void) if (smtp_input) { #ifdef SUPPORT_TLS - tls_close(FALSE); /* Shut down the TLS library */ + tls_close(TRUE, FALSE); /* Shut down the TLS library */ #endif (void)close(fileno(smtp_in)); (void)close(fileno(smtp_out)); @@ -727,6 +753,8 @@ Returns: nothing static void show_whats_supported(FILE *f) { + auth_info *authi; + #ifdef DB_VERSION_STRING fprintf(f, "Berkeley DB: %s\n", DB_VERSION_STRING); #elif defined(BTREEVERSION) && defined(HASHVERSION) @@ -791,8 +819,35 @@ fprintf(f, "Support for:"); #ifndef DISABLE_DKIM fprintf(f, " DKIM"); #endif -#ifdef WITH_OLD_DEMIME - fprintf(f, " Old_Demime"); +#ifndef DISABLE_DNSSEC + fprintf(f, " DNSSEC"); +#endif +#ifndef DISABLE_EVENT + fprintf(f, " Event"); +#endif +#ifdef SUPPORT_I18N + fprintf(f, " I18N"); +#endif +#ifndef DISABLE_OCSP + fprintf(f, " OCSP"); +#endif +#ifndef DISABLE_PRDR + fprintf(f, " PRDR"); +#endif +#ifdef SUPPORT_PROXY + fprintf(f, " PROXY"); +#endif +#ifdef SUPPORT_SOCKS + fprintf(f, " SOCKS"); +#endif +#ifdef TCP_FASTOPEN + 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"); @@ -803,9 +858,18 @@ fprintf(f, "Support for:"); #ifdef EXPERIMENTAL_BRIGHTMAIL fprintf(f, " Experimental_Brightmail"); #endif +#ifdef EXPERIMENTAL_DANE + fprintf(f, " Experimental_DANE"); +#endif #ifdef EXPERIMENTAL_DCC fprintf(f, " Experimental_DCC"); #endif +#ifdef EXPERIMENTAL_DMARC + fprintf(f, " Experimental_DMARC"); +#endif +#ifdef EXPERIMENTAL_DSN_INFO + fprintf(f, " Experimental_DSN_info"); +#endif fprintf(f, "\n"); fprintf(f, "Lookups (built-in):"); @@ -816,7 +880,7 @@ fprintf(f, "Lookups (built-in):"); fprintf(f, " cdb"); #endif #if defined(LOOKUP_DBM) && LOOKUP_DBM!=2 - fprintf(f, " dbm dbmnz"); + fprintf(f, " dbm dbmjz dbmnz"); #endif #if defined(LOOKUP_DNSDB) && LOOKUP_DNSDB!=2 fprintf(f, " dnsdb"); @@ -830,6 +894,9 @@ fprintf(f, "Lookups (built-in):"); #if defined(LOOKUP_LDAP) && LOOKUP_LDAP!=2 fprintf(f, " ldap ldapdn ldapm"); #endif +#ifdef EXPERIMENTAL_LMDB + fprintf(f, " lmdb"); +#endif #if defined(LOOKUP_MYSQL) && LOOKUP_MYSQL!=2 fprintf(f, " mysql"); #endif @@ -848,6 +915,9 @@ fprintf(f, "Lookups (built-in):"); #if defined(LOOKUP_PGSQL) && LOOKUP_PGSQL!=2 fprintf(f, " pgsql"); #endif +#if defined(LOOKUP_REDIS) && LOOKUP_REDIS!=2 + fprintf(f, " redis"); +#endif #if defined(LOOKUP_SQLITE) && LOOKUP_SQLITE!=2 fprintf(f, " sqlite"); #endif @@ -869,12 +939,21 @@ fprintf(f, "Authenticators:"); #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"); fprintf(f, "Routers:"); @@ -923,6 +1002,9 @@ fprintf(f, "Transports:"); #ifdef TRANSPORT_PIPE fprintf(f, " pipe"); #endif +#ifdef EXPERIMENTAL_QUEUEFILE + fprintf(f, " queuefile"); +#endif #ifdef TRANSPORT_SMTP fprintf(f, " smtp"); #endif @@ -937,6 +1019,8 @@ 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. @@ -960,33 +1044,45 @@ DEBUG(D_any) do { fprintf(f, "Compiler: \n"); #endif +#if defined(__GLIBC__) && !defined(__UCLIBC__) + fprintf(f, "Library version: Glibc: Compile: %d.%d\n", + __GLIBC__, __GLIBC_MINOR__); + if (__GLIBC_PREREQ(2, 1)) + fprintf(f, " Runtime: %s\n", + gnu_get_libc_version()); +#endif + #ifdef SUPPORT_TLS tls_version_report(f); #endif - -#ifdef AUTH_CYRUS_SASL - auth_cyrus_sasl_version_report(f); +#ifdef SUPPORT_I18N + utf8_version_report(f); #endif + for (authi = auths_available; *authi->driver_name != '\0'; ++authi) + if (authi->version_report) + (*authi->version_report)(f); + + /* 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(f, "Library version: PCRE: Compile: %d.%d%s\n" " Runtime: %s\n", PCRE_MAJOR, PCRE_MINOR, - /* PRE_PRERELEASE is either defined and empty or a string. - * unless its an ancient version of PCRE in which case it - * is not defined */ -#ifdef PCRE_PRERELEASE - PCRE_PRERELEASE "", -#else - "", -#endif + EXPAND_AND_QUOTE(PCRE_PRERELEASE) "", pcre_version()); +#undef QUOTE +#undef EXPAND_AND_QUOTE init_lookup_list(); for (i = 0; i < lookup_list_count; i++) - { if (lookup_list[i]->version_report) lookup_list[i]->version_report(f); - } #ifdef WHITELIST_D_MACROS fprintf(f, "WHITELIST_D_MACROS: \"%s\"\n", WHITELIST_D_MACROS); @@ -1003,6 +1099,39 @@ DEBUG(D_any) do { } +/************************************************* +* Show auxiliary information about Exim * +*************************************************/ + +static void +show_exim_information(enum commandline_info request, FILE *stream) +{ +const uschar **pp; + +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 dscp value keywords known\n" +" exim -bI:sieve list of supported sieve extensions, one per line.\n" +); + return; + case CMDINFO_SIEVE: + for (pp = exim_sieve_extension_list; *pp; ++pp) + fprintf(stream, "%s\n", *pp); + return; + case CMDINFO_DSCP: + dscp_list_to_stream(stream); + return; + } +} /************************************************* @@ -1034,23 +1163,23 @@ for (t = lpart; !needs_quote && *t != 0; t++) if (!needs_quote) return lpart; size = ptr = 0; -yield = string_cat(NULL, &size, &ptr, US"\"", 1); +yield = string_catn(NULL, &size, &ptr, US"\"", 1); for (;;) { uschar *nq = US Ustrpbrk(lpart, "\\\""); if (nq == NULL) { - yield = string_cat(yield, &size, &ptr, lpart, Ustrlen(lpart)); + yield = string_cat(yield, &size, &ptr, 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); + 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); lpart = nq + 1; } -yield = string_cat(yield, &size, &ptr, US"\"", 1); +yield = string_catn(yield, &size, &ptr, US"\"", 1); yield[ptr] = 0; return yield; } @@ -1080,9 +1209,9 @@ 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); +dlhandle = dlopen("libreadline." DYNLIB_FN_EXT, RTLD_GLOBAL|RTLD_NOW); if (dlhandle_curses != NULL) dlclose(dlhandle_curses); if (dlhandle != NULL) @@ -1164,15 +1293,16 @@ for (i = 0;; i++) while (p < ss && isspace(*p)) p++; /* leading space after cont */ } - yield = string_cat(yield, &size, &ptr, p, ss - p); + yield = string_catn(yield, &size, &ptr, p, ss - p); #ifdef USE_READLINE if (fn_readline != NULL) free(readline_line); #endif + /* yield can only be NULL if ss==p */ if (ss == p || yield[ptr-1] != '\\') { - yield[ptr] = 0; + if (yield) yield[ptr] = 0; break; } yield[--ptr] = 0; @@ -1201,7 +1331,7 @@ static void exim_usage(uschar *progname) { -/* Handle specific program invocation varients */ +/* Handle specific program invocation variants */ if (Ustrcmp(progname, US"-mailq") == 0) { fprintf(stderr, @@ -1228,12 +1358,12 @@ exit(EXIT_FAILURE); /* Typically, Exim will drop privileges if macros are supplied. In some cases, we want to not do so. -Arguments: none (macros is a global) +Arguments: opt_D_used - true if the commandline had a "-D" option Returns: true if trusted, false otherwise */ static BOOL -macros_trusted(void) +macros_trusted(BOOL opt_D_used) { #ifdef WHITELIST_D_MACROS macro_item *m; @@ -1243,7 +1373,7 @@ size_t len; BOOL prev_char_item, found; #endif -if (macros == NULL) +if (!opt_D_used) return TRUE; #ifndef WHITELIST_D_MACROS return FALSE; @@ -1300,8 +1430,9 @@ for (p = whitelisted, i = 0; (p != end) && (i < white_count); ++p) } whites[i] = NULL; -/* The list of macros should be very short. Accept the N*M complexity. */ -for (m = macros; m != NULL; m = m->next) +/* 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) { found = FALSE; for (w = whites; *w; ++w) @@ -1380,14 +1511,18 @@ 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; @@ -1400,6 +1535,7 @@ 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; @@ -1407,9 +1543,11 @@ uschar *ftest_domain = 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"/"; +size_t sz; void *reset_point; struct passwd *pw; @@ -1418,6 +1556,10 @@ pid_t passed_qr_pid = (pid_t)0; int passed_qr_pipe = -1; gid_t group_list[NGROUPS_MAX]; +/* For the -bI: flag */ +enum commandline_info info_flag = CMDINFO_NONE; +BOOL info_stdout = FALSE; + /* Possible options for -R and -S */ static uschar *rsopts[] = { US"f", US"ff", US"r", US"rf", US"rff" }; @@ -1494,8 +1636,9 @@ if (!route_findgroup(US CONFIGURE_GROUPNAME, &config_gid)) } #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 @@ -1521,13 +1664,16 @@ 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) +if (!(log_buffer = US malloc(LOG_BUFFER_SIZE))) { fprintf(stderr, "exim: failed to get store for log buffer\n"); exit(EXIT_FAILURE); } +/* 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 indirection, because some systems don't allow writing to the variable "stderr". @@ -1638,6 +1784,7 @@ 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 @@ -1753,7 +1900,7 @@ for (i = 1; i < argc; i++) break; } - /* An option consistion of -- terminates the options */ + /* An option consisting of -- terminates the options */ if (Ustrcmp(arg, "--") == 0) { @@ -1816,6 +1963,26 @@ for (i = 1; i < argc; i++) 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. */ @@ -1858,7 +2025,7 @@ for (i = 1; i < argc; i++) 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 { @@ -1878,7 +2045,7 @@ for (i = 1; i < argc; i++) { 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]); @@ -1908,6 +2075,7 @@ for (i = 1; i < argc; i++) sender_host_address = argv[i]; host_checking = checking = log_testing_mode = TRUE; host_checking_callout = argrest[1] == 'c'; + message_logs = FALSE; } /* -bi: This option is used by sendmail to initialize *the* alias file, @@ -1917,6 +2085,32 @@ for (i = 1; i < argc; i++) 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. */ @@ -1927,6 +2121,7 @@ for (i = 1; i < argc; i++) else if (Ustrcmp(argrest, "malware") == 0) { if (++i >= argc) { badarg = TRUE; break; } + checking = TRUE; malware_test_file = argv[i]; } @@ -1989,15 +2184,26 @@ for (i = 1; i < argc; i++) 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; } @@ -2006,6 +2212,7 @@ for (i = 1; i < argc; i++) else if (Ustrcmp(argrest, "rw") == 0) { + checking = TRUE; test_rewrite_arg = i + 1; goto END_ARG; } @@ -2048,6 +2255,25 @@ for (i = 1; i < argc; i++) printf("%s\n", CS version_copyright); version_printed = TRUE; show_whats_supported(stdout); + log_testing_mode = TRUE; + } + + /* -bw: inetd wait mode, accept a listening socket as stdin */ + + else if (*argrest == 'w') + { + inetd_wait_mode = TRUE; + background_daemon = FALSE; + daemon_listen = TRUE; + if (*(++argrest) != '\0') + { + inetd_wait_timeout = readconf_readtime(argrest, 0, FALSE); + if (inetd_wait_timeout <= 0) + { + fprintf(stderr, "exim: bad time value %s: abandoned\n", argv[i]); + exit(EXIT_FAILURE); + } + } } else badarg = TRUE; @@ -2068,7 +2294,7 @@ for (i = 1; i < argc; i++) #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) @@ -2144,7 +2370,7 @@ for (i = 1; i < argc; i++) if (nr_configs) { int sep = 0; - uschar *list = argrest; + const uschar *list = argrest; uschar *filename; while (trusted_config && (filename = string_nextinlist(&list, &sep, big_buffer, big_buffer_size)) != NULL) @@ -2196,11 +2422,11 @@ for (i = 1; i < argc; i++) #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') @@ -2224,22 +2450,14 @@ for (i = 1; i < argc; i++) while (isspace(*s)) s++; } - for (m = macros; m != NULL; m = m->next) - { + for (m = macros; m; m = m->next) if (Ustrcmp(m->name, name) == 0) { fprintf(stderr, "exim: duplicated -D in command line\n"); exit(EXIT_FAILURE); } - mlast = m; - } - 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(string_copy(name), string_copy(s), TRUE); if (clmacro_count >= MAX_CLMACROS) { @@ -2276,8 +2494,8 @@ for (i = 1; i < argc; i++) argrest++; } if (*argrest != 0) - decode_bits(&selector, NULL, D_memory, 0, argrest, debug_options, - debug_options_count, US"debug", 0); + decode_bits(&selector, 1, debug_notall, argrest, + debug_options, debug_options_count, US"debug", 0); debug_selector = selector; } break; @@ -2349,7 +2567,7 @@ for (i = 1; i < argc; i++) case 'f': { - int start, end; + int dummy_start, dummy_end; uschar *errmess; if (*argrest == 0) { @@ -2357,9 +2575,7 @@ for (i = 1; i < argc; i++) { badarg = TRUE; break; } } if (*argrest == 0) - { sender_address = string_sprintf(""); /* Ensure writeable memory */ - } else { uschar *temp = argrest + Ustrlen(argrest) - 1; @@ -2367,8 +2583,15 @@ for (i = 1; i < argc; i++) 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); +#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) @@ -2381,9 +2604,13 @@ for (i = 1; i < argc; i++) } 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 @@ -2408,6 +2635,29 @@ for (i = 1; i < argc; i++) 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; } + } + sz = Ustrlen(argrest); + if (sz > 32) + { + fprintf(stderr, "exim: the -L syslog name is too long: \"%s\"\n", argrest); + return EXIT_FAILURE; + } + if (sz < 1) + { + fprintf(stderr, "exim: the -L syslog name is too short\n"); + return EXIT_FAILURE; + } + cmdline_syslog_name = argrest; + break; + case 'M': receiving_message = FALSE; @@ -2458,75 +2708,94 @@ for (i = 1; i < argc; 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 + { + 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]) + { /* -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': 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 |= PEER_OFFERED_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 |= PEER_OFFERED_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 |= PEER_OFFERED_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 |= PEER_OFFERED_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. */ - #ifdef SUPPORT_TLS - else if (Ustrcmp(argrest, "CT") == 0) - { - tls_offered = TRUE; - break; + case 'T': smtp_peer_options |= PEER_OFFERED_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 @@ -2670,10 +2939,12 @@ for (i = 1; i < argc; i++) 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 @@ -2816,9 +3087,33 @@ for (i = 1; i < argc; i++) 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])) + { + fprintf(stderr,"-oMm must be a valid message ID\n"); + exit(EXIT_FAILURE); + } + if (!trusted_config) + { + fprintf(stderr,"-oMm must be called by a trusted user/config\n"); + exit(EXIT_FAILURE); + } + 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) + { + fprintf(stderr, "received_protocol is set already\n"); + exit(EXIT_FAILURE); + } + else received_protocol = argv[++i]; /* -oMs: Set sender host name */ @@ -2914,14 +3209,25 @@ for (i = 1; i < argc; i++) if (*argrest != 0) { - uschar *hn = Ustrchr(argrest, ':'); + uschar *hn; + + if (received_protocol) + { + 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; } } @@ -2958,7 +3264,7 @@ for (i = 1; i < argc; i++) if (*argrest == 'f') { queue_run_force = TRUE; - if (*(++argrest) == 'f') + if (*++argrest == 'f') { deliver_force_thaw = TRUE; argrest++; @@ -2973,8 +3279,19 @@ for (i = 1; i < argc; i++) 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]... Work on the named queue */ + + if (*argrest == 'G') + { + 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][G]: Run the queue, optionally forced, optionally local + only, optionally named, optionally starting from a given message id. */ if (*argrest == 0 && (i + 1 >= argc || argv[i+1][0] == '-' || mac_ismsgid(argv[i+1]))) @@ -2986,20 +3303,14 @@ for (i = 1; i < argc; i++) stop_queue_run_id = argv[++i]; } - /* -q[f][f][l]: Run the queue at regular intervals, optionally forced, - optionally local only. */ + /* -q[f][f][l][G/]: Run the queue at regular intervals, optionally + forced, optionally local only, optionally named. */ - else + else if ((queue_interval = readconf_readtime(*argrest ? argrest : argv[++i], + 0, FALSE)) <= 0) { - 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); - } + fprintf(stderr, "exim: bad time value %s: abandoned\n", argv[i]); + exit(EXIT_FAILURE); } break; @@ -3019,8 +3330,7 @@ for (i = 1; i < argc; i++) if (*argrest != 0) { int i; - for (i = 0; i < sizeof(rsopts)/sizeof(uschar *); i++) - { + for (i = 0; i < nelem(rsopts); i++) if (Ustrcmp(argrest, rsopts[i]) == 0) { if (i != 2) queue_run_force = TRUE; @@ -3028,21 +3338,20 @@ for (i = 1; i < argc; i++) if (i == 1 || i == 4) 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 (*argrest) + deliver_selectstring = argrest; + else if (i+1 < argc) + deliver_selectstring = argv[++i]; + else { - if (i+1 < argc) deliver_selectstring = argv[++i]; else - { - fprintf(stderr, "exim: string expected after -R\n"); - exit(EXIT_FAILURE); - } + fprintf(stderr, "exim: string expected after -R\n"); + exit(EXIT_FAILURE); } - else deliver_selectstring = argrest; break; @@ -3063,11 +3372,10 @@ for (i = 1; i < argc; i++) in all cases provided there are no further characters in this argument. */ - if (*argrest != 0) + if (*argrest) { int i; - for (i = 0; i < sizeof(rsopts)/sizeof(uschar *); i++) - { + for (i = 0; i < nelem(rsopts); i++) if (Ustrcmp(argrest, rsopts[i]) == 0) { if (i != 2) queue_run_force = TRUE; @@ -3075,21 +3383,20 @@ for (i = 1; i < argc; i++) if (i == 1 || i == 4) 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 (*argrest) + deliver_selectstring_sender = argrest; + else if (i+1 < argc) + deliver_selectstring_sender = argv[++i]; + else { - if (i+1 < argc) deliver_selectstring_sender = argv[++i]; else - { - fprintf(stderr, "exim: string expected after -S\n"); - exit(EXIT_FAILURE); - } + fprintf(stderr, "exim: string expected after -S\n"); + exit(EXIT_FAILURE); } - else deliver_selectstring_sender = argrest; break; /* -Tqt is an option that is exclusively for use by the testing suite. @@ -3121,7 +3428,7 @@ for (i = 1; i < argc; i++) /* -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; + else if (Ustrcmp(argrest, "ls-on-connect") == 0) tls_in.on_connect = TRUE; #endif else badarg = TRUE; @@ -3162,6 +3469,27 @@ for (i = 1; i < argc; i++) 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) + { + fprintf(stderr, "exim: string expected after -X\n"); + exit(EXIT_FAILURE); + } + break; + + case 'z': + if (*argrest == '\0') + if (++i < argc) log_oneline = argv[i]; else + { + fprintf(stderr, "exim: file name expected after %s\n", argv[i-1]); + exit(EXIT_FAILURE); + } + break; + /* All other initial characters are errors */ default: @@ -3182,8 +3510,9 @@ for (i = 1; i < argc; i++) /* 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; END_ARG: @@ -3199,12 +3528,12 @@ if (( ) || ( msg_action_arg > 0 && - (daemon_listen || queue_interval >= 0 || list_options || + (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) && + (daemon_listen || queue_interval > 0) && (sender_address != NULL || list_options || list_queue || checking || bi_option) ) || @@ -3212,6 +3541,9 @@ if (( daemon_listen && queue_interval == 0 ) || ( + inetd_wait_mode && queue_interval >= 0 + ) || + ( list_options && (checking || smtp_input || extract_recipients || filter_test != FTEST_NONE || bi_option) @@ -3388,7 +3720,7 @@ configuration file changes and macro definitions haven't happened. */ if (( /* EITHER */ (!trusted_config || /* Config changed, or */ - !macros_trusted()) && /* impermissible macros and */ + !macros_trusted(opt_D_used)) && /* impermissible macros and */ real_uid != root_uid && /* Not root, and */ !running_in_test_harness /* Not fudged */ ) || /* OR */ @@ -3446,22 +3778,132 @@ if ((filter_test & FTEST_USER) != 0) } } +/* 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 (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. */ +configuration data for delivery can be read if needed. + +NOTE: immediatly 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 */ +if ((initial_cwd = os_getcwd(NULL, 0)) == NULL) + { + perror("exim: can't get the current working directory"); + exit(EXIT_FAILURE); + } + +/* 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