X-Git-Url: https://vcs.fsf.org/?a=blobdiff_plain;f=src%2Fsrc%2Fdaemon.c;h=21ce2f03e89102cd0628fe56e9710c89de2ca80c;hb=fc2ba7b9fae5992dd76f721f283714a6d2ea137d;hp=1a15d46c0737102873cadb5123ab1fe0b8130204;hpb=b536a578fbabdc9d39da53d54a8d7700ba537431;p=exim.git diff --git a/src/src/daemon.c b/src/src/daemon.c index 1a15d46c0..21ce2f03e 100644 --- a/src/src/daemon.c +++ b/src/src/daemon.c @@ -106,10 +106,10 @@ Returns: nothing static void never_error(uschar *log_msg, uschar *smtp_msg, int was_errno) { -uschar *emsg = (was_errno <= 0)? US"" : - string_sprintf(": %s", strerror(was_errno)); +uschar *emsg = was_errno <= 0 + ? US"" : string_sprintf(": %s", strerror(was_errno)); log_write(0, LOG_MAIN|LOG_PANIC, "%s%s", log_msg, emsg); -if (smtp_out != NULL) smtp_printf("421 %s\r\n", FALSE, smtp_msg); +if (smtp_out) smtp_printf("421 %s\r\n", FALSE, smtp_msg); } @@ -146,7 +146,7 @@ int max_for_this_host = 0; int save_log_selector = *log_selector; gstring * whofrom; -void *reset_point = store_get(0); +rmark reset_point = store_mark(); /* Make the address available in ASCII representation, and also fish out the remote port. */ @@ -202,11 +202,11 @@ memory is reclaimed. */ whofrom = string_append(NULL, 3, "[", sender_host_address, "]"); if (LOGGING(incoming_port)) - whofrom = string_append(whofrom, 2, ":", string_sprintf("%d", sender_host_port)); + whofrom = string_fmt_append(whofrom, ":%d", sender_host_port); if (LOGGING(incoming_interface)) - whofrom = string_append(whofrom, 4, " I=[", - interface_address, "]:", string_sprintf("%d", interface_port)); + whofrom = string_fmt_append(whofrom, " I=[%s]:%d", + interface_address, interface_port); (void) string_from_gstring(whofrom); /* Terminate the newly-built string */ @@ -282,11 +282,10 @@ count of *other* connections, not including this one. */ if ((max_for_this_host > 0) && (smtp_accept_count >= max_for_this_host)) { - int i; int host_accept_count = 0; int other_host_count = 0; /* keep a count of non matches to optimise */ - for (i = 0; i < smtp_accept_max; ++i) + for (int i = 0; i < smtp_accept_max; ++i) if (smtp_slots[i].host_address) { if (Ustrcmp(sender_host_address, smtp_slots[i].host_address) == 0) @@ -396,7 +395,7 @@ if (pid == 0) "please try again later.\r\n", FALSE); mac_smtp_fflush(); search_tidyup(); - _exit(EXIT_FAILURE); + exim_underbar_exit(EXIT_FAILURE); } } else if (*nah) smtp_active_hostname = nah; @@ -482,14 +481,14 @@ if (pid == 0) { mac_smtp_fflush(); search_tidyup(); - _exit(EXIT_SUCCESS); + exim_underbar_exit(EXIT_SUCCESS); } for (;;) { int rc; message_id[0] = 0; /* Clear out any previous message_id */ - reset_point = store_get(0); /* Save current store high water point */ + reset_point = store_mark(); /* Save current store high water point */ DEBUG(D_any) debug_printf("Process %d is ready for new message\n", (int)getpid()); @@ -510,7 +509,7 @@ if (pid == 0) cancel_cutthrough_connection(TRUE, US"receive dropped"); mac_smtp_fflush(); smtp_log_no_mail(); /* Log no mail if configured */ - _exit(EXIT_SUCCESS); + exim_underbar_exit(EXIT_SUCCESS); } if (message_id[0] == 0) continue; /* No message was accepted */ } @@ -518,13 +517,13 @@ if (pid == 0) { if (smtp_out) { - int i, fd = fileno(smtp_in); + int fd = fileno(smtp_in); uschar buf[128]; mac_smtp_fflush(); /* drain socket, for clean TCP FINs */ if (fcntl(fd, F_SETFL, O_NONBLOCK) == 0) - for(i = 16; read(fd, buf, sizeof(buf)) > 0 && i > 0; ) i--; + for(int i = 16; read(fd, buf, sizeof(buf)) > 0 && i > 0; ) i--; } cancel_cutthrough_connection(TRUE, US"message setup dropped"); search_tidyup(); @@ -533,20 +532,19 @@ if (pid == 0) /*XXX should we pause briefly, hoping that the client will be the active TCP closer hence get the TCP_WAIT endpoint? */ DEBUG(D_receive) debug_printf("SMTP>>(close on process exit)\n"); - _exit(rc ? EXIT_FAILURE : EXIT_SUCCESS); + exim_underbar_exit(rc ? EXIT_FAILURE : EXIT_SUCCESS); } /* Show the recipients when debugging */ DEBUG(D_receive) { - int i; if (sender_address) debug_printf("Sender: %s\n", sender_address); if (recipients_list) { 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); } } @@ -567,6 +565,7 @@ if (pid == 0) int r = receive_messagecount; BOOL q = f.queue_only_policy; smtp_reset(reset_point); + reset_point = NULL; f.queue_only_policy = q; receive_messagecount = r; } @@ -647,7 +646,7 @@ if (pid == 0) /* Don't ever molest the parent's SSL connection, but do clean up the data structures if necessary. */ -#ifdef SUPPORT_TLS +#ifndef DISABLE_TLS tls_close(NULL, TLS_NO_SHUTDOWN); #endif @@ -667,7 +666,7 @@ if (pid == 0) (void) deliver_message(message_id, FALSE, FALSE); search_tidyup(); - _exit(EXIT_SUCCESS); + exim_underbar_exit(EXIT_SUCCESS); } if (dpid > 0) @@ -694,18 +693,18 @@ if (pid < 0) never_error(US"daemon: accept process fork failed", US"Fork failed", errno); else { - int i; - for (i = 0; i < smtp_accept_max; ++i) + for (int i = 0; i < smtp_accept_max; ++i) if (smtp_slots[i].pid <= 0) { smtp_slots[i].pid = pid; - if (smtp_accept_max_per_host != NULL) + /* Connection closes come asyncronously, so we cannot stack this store */ + if (smtp_accept_max_per_host) smtp_slots[i].host_address = string_copy_malloc(sender_host_address); smtp_accept_count++; break; } DEBUG(D_any) debug_printf("%d SMTP accept process%s running\n", - smtp_accept_count, (smtp_accept_count == 1)? "" : "es"); + smtp_accept_count, smtp_accept_count == 1 ? "" : "es"); } /* Get here via goto in error cases */ @@ -836,7 +835,6 @@ pid_t pid; while ((pid = waitpid(-1, &status, WNOHANG)) > 0) { - int i; DEBUG(D_any) { debug_printf("child %d ended: status=0x%x\n", (int)pid, status); @@ -854,6 +852,7 @@ while ((pid = waitpid(-1, &status, WNOHANG)) > 0) if (smtp_slots) { + int i; for (i = 0; i < smtp_accept_max; i++) if (smtp_slots[i].pid == pid) { @@ -874,7 +873,7 @@ while ((pid = waitpid(-1, &status, WNOHANG)) > 0) if (queue_pid_slots) { int max = atoi(CS expand_string(queue_run_max)); - for (i = 0; i < max; i++) + for (int i = 0; i < max; i++) if (queue_pid_slots[i] == pid) { queue_pid_slots[i] = 0; @@ -930,7 +929,7 @@ DEBUG(D_any|D_v) debug_selector |= D_pid; if (f.inetd_wait_mode) { listen_socket_count = 1; - listen_sockets = store_get(sizeof(int)); + listen_sockets = store_get(sizeof(int), FALSE); (void) close(3); if (dup2(0, 3) == -1) log_write(0, LOG_MAIN|LOG_PANIC_DIE, @@ -1118,7 +1117,7 @@ if (f.daemon_listen && !f.inetd_wait_mode) sep = 0; while ((s = string_nextinlist(&list, &sep, big_buffer, big_buffer_size))) pct++; - default_smtp_port = store_get((pct+1) * sizeof(int)); + default_smtp_port = store_get((pct+1) * sizeof(int), FALSE); list = daemon_smtp_port; sep = 0; for (pct = 0; @@ -1187,8 +1186,6 @@ if (f.daemon_listen && !f.inetd_wait_mode) for (ipa = addresses; ipa; ipa = ipa->next) { - int i; - if (Ustrcmp(ipa->address, "0.0.0.0") == 0) ipa->address[0] = 0; else if (Ustrcmp(ipa->address, "::0") == 0) @@ -1206,9 +1203,9 @@ if (f.daemon_listen && !f.inetd_wait_mode) ipa->address[1] == 0 ? US"\"all IPv6\"" : ipa->address); ipa->port = default_smtp_port[0]; - for (i = 1; default_smtp_port[i] > 0; i++) + for (int i = 1; default_smtp_port[i] > 0; i++) { - ip_address_item *new = store_get(sizeof(ip_address_item)); + ip_address_item *new = store_get(sizeof(ip_address_item), FALSE); memcpy(new->address, ipa->address, Ustrlen(ipa->address) + 1); new->port = default_smtp_port[i]; @@ -1266,7 +1263,7 @@ if (f.daemon_listen && !f.inetd_wait_mode) for (ipa = addresses; ipa; ipa = ipa->next) listen_socket_count++; - listen_sockets = store_get(sizeof(int) * listen_socket_count); + listen_sockets = store_get(sizeof(int) * listen_socket_count, FALSE); } /* daemon_listen but not inetd_wait_mode */ @@ -1289,9 +1286,8 @@ if (f.daemon_listen) if (smtp_accept_max > 0) { - int i; - smtp_slots = store_get(smtp_accept_max * sizeof(smtp_slot)); - for (i = 0; i < smtp_accept_max; i++) smtp_slots[i] = empty_smtp_slot; + smtp_slots = store_get(smtp_accept_max * sizeof(smtp_slot), FALSE); + for (int i = 0; i < smtp_accept_max; i++) smtp_slots[i] = empty_smtp_slot; } } @@ -1578,17 +1574,16 @@ coming from Exim, not whoever started the daemon. */ originator_uid = exim_uid; originator_gid = exim_gid; -originator_login = ((pw = getpwuid(exim_uid)) != NULL)? - string_copy_malloc(US pw->pw_name) : US"exim"; +originator_login = (pw = getpwuid(exim_uid)) + ? string_copy_perm(US pw->pw_name, FALSE) : US"exim"; /* Get somewhere to keep the list of queue-runner pids if we are keeping track of them (and also if we are doing queue runs). */ if (queue_interval > 0 && local_queue_run_max > 0) { - int i; - queue_pid_slots = store_get(local_queue_run_max * sizeof(pid_t)); - for (i = 0; i < local_queue_run_max; i++) queue_pid_slots[i] = 0; + queue_pid_slots = store_get(local_queue_run_max * sizeof(pid_t), FALSE); + for (int i = 0; i < local_queue_run_max; i++) queue_pid_slots[i] = 0; } /* Set up the handler for termination of child processes. */ @@ -1624,11 +1619,10 @@ if (f.inetd_wait_mode) else if (f.daemon_listen) { - int i, j; int smtp_ports = 0; int smtps_ports = 0; - ip_address_item * ipa, * i2; - uschar * p = big_buffer; + ip_address_item * ipa; + uschar * p; uschar * qinfo = queue_interval > 0 ? string_sprintf("-q%s", readconf_printtime(queue_interval)) : US"no queue runs"; @@ -1640,27 +1634,19 @@ else if (f.daemon_listen) deprecated protocol that starts TLS without using STARTTLS), and others listening for standard SMTP. Keep their listings separate. */ - for (j = 0; j < 2; j++) + for (int j = 0, i; j < 2; j++) { for (i = 0, ipa = addresses; i < 10 && ipa; i++, ipa = ipa->next) { /* First time round, look for SMTP ports; second time round, look for - SMTPS ports. For the first one of each, insert leading text. */ + SMTPS ports. Build IP+port strings. */ if (host_is_tls_on_connect_port(ipa->port) == (j > 0)) { if (j == 0) - { - if (smtp_ports++ == 0) - { - memcpy(p, "SMTP on", 8); - p += 7; - } - } + smtp_ports++; else - if (smtps_ports++ == 0) - p += sprintf(CS p, "%sSMTPS on", - smtp_ports == 0 ? "" : " and for "); + smtps_ports++; /* Now the information about the port (and sometimes interface) */ @@ -1669,40 +1655,67 @@ else if (f.daemon_listen) if (ipa->next && ipa->next->address[0] == 0 && ipa->next->port == ipa->port) { - p += sprintf(CS p, " port %d (IPv6 and IPv4)", ipa->port); - ipa = ipa->next; + ipa->log = string_sprintf(" port %d (IPv6 and IPv4)", ipa->port); + (ipa = ipa->next)->log = NULL; } else if (ipa->v6_include_v4) - p += sprintf(CS p, " port %d (IPv6 with IPv4)", ipa->port); + ipa->log = string_sprintf(" port %d (IPv6 with IPv4)", ipa->port); else - p += sprintf(CS p, " port %d (IPv6)", ipa->port); + ipa->log = string_sprintf(" port %d (IPv6)", ipa->port); } else if (ipa->address[0] == 0) /* v4 wildcard */ - p += sprintf(CS p, " port %d (IPv4)", ipa->port); + ipa->log = string_sprintf(" port %d (IPv4)", ipa->port); else /* check for previously-seen IP */ { + ip_address_item * i2; for (i2 = addresses; i2 != ipa; i2 = i2->next) if ( host_is_tls_on_connect_port(i2->port) == (j > 0) && Ustrcmp(ipa->address, i2->address) == 0 ) { /* found; append port to list */ - if (p[-1] == '}') p--; - while (isdigit(*--p)) ; - p += 1 + sprintf(CS p+1, "%s%d,%d}", *p == ',' ? "" : "{", - i2->port, ipa->port); + for (p = i2->log; *p; ) p++; /* end of existing string */ + if (*--p == '}') *p = '\0'; /* drop EOL */ + while (isdigit(*--p)) ; /* char before port */ + + i2->log = *p == ':' /* no list yet? */ + ? string_sprintf("%.*s{%s,%d}", + (int)(p - i2->log + 1), i2->log, p+1, ipa->port) + : string_sprintf("%s,%d}", i2->log, ipa->port); + ipa->log = NULL; break; } if (i2 == ipa) /* first-time IP */ - p += sprintf(CS p, " [%s]:%d", ipa->address, ipa->port); + ipa->log = string_sprintf(" [%s]:%d", ipa->address, ipa->port); } } } + } - if (ipa) + p = big_buffer; + for (int j = 0, i; j < 2; j++) + { + /* First time round, look for SMTP ports; second time round, look for + SMTPS ports. For the first one of each, insert leading text. */ + + if (j == 0) { - memcpy(p, " ...", 5); - p += 4; + if (smtp_ports > 0) + p += sprintf(CS p, "SMTP on"); } + else + if (smtps_ports > 0) + p += sprintf(CS p, "%sSMTPS on", + smtp_ports == 0 ? "" : " and for "); + + /* Now the information about the port (and sometimes interface) */ + + for (i = 0, ipa = addresses; i < 10 && ipa; i++, ipa = ipa->next) + if (host_is_tls_on_connect_port(ipa->port) == (j > 0)) + if (ipa->log) + p += sprintf(CS p, "%s", ipa->log); + + if (ipa) + p += sprintf(CS p, " ..."); } log_write(0, LOG_MAIN, @@ -1816,8 +1829,6 @@ for (;;) { if ((pid = fork()) == 0) { - int sk; - DEBUG(D_any) debug_printf("Starting queue-runner: pid %d\n", (int)getpid()); @@ -1829,7 +1840,7 @@ for (;;) /* Close any open listening sockets in the child */ - for (sk = 0; sk < listen_socket_count; sk++) + for (int sk = 0; sk < listen_socket_count; sk++) (void)close(listen_sockets[sk]); /* Reset SIGHUP and SIGCHLD in the child in both cases. */ @@ -1886,7 +1897,7 @@ for (;;) /* No need to re-exec; SIGALRM remains set to the default handler */ queue_run(NULL, NULL, FALSE); - _exit(EXIT_SUCCESS); + exim_underbar_exit(EXIT_SUCCESS); } if (pid < 0) @@ -1897,8 +1908,7 @@ for (;;) } else { - int i; - for (i = 0; i < local_queue_run_max; ++i) + for (int i = 0; i < local_queue_run_max; ++i) if (queue_pid_slots[i] <= 0) { queue_pid_slots[i] = pid; @@ -1906,7 +1916,7 @@ for (;;) break; } DEBUG(D_any) debug_printf("%d queue-runner process%s running\n", - queue_run_count, (queue_run_count == 1)? "" : "es"); + queue_run_count, queue_run_count == 1 ? "" : "es"); } } @@ -1930,13 +1940,13 @@ for (;;) if (f.daemon_listen) { - int sk, lcount, select_errno; + int lcount, select_errno; int max_socket = 0; BOOL select_failed = FALSE; fd_set select_listen; FD_ZERO(&select_listen); - for (sk = 0; sk < listen_socket_count; sk++) + for (int sk = 0; sk < listen_socket_count; sk++) { FD_SET(listen_sockets[sk], &select_listen); if (listen_sockets[sk] > max_socket) max_socket = listen_sockets[sk]; @@ -1977,6 +1987,11 @@ for (;;) handle_ending_processes(); errno = select_errno; +#ifndef DISABLE_TLS + /* Create or rotate any required keys */ + tls_daemon_init(); +#endif + /* Loop for all the sockets that are currently ready to go. If select actually failed, we have set the count to 1 and select_failed=TRUE, so as to use the common error code for select/accept below. */ @@ -1986,7 +2001,7 @@ for (;;) int accept_socket = -1; if (!select_failed) - for (sk = 0; sk < listen_socket_count; sk++) + for (int sk = 0; sk < listen_socket_count; sk++) if (FD_ISSET(listen_sockets[sk], &select_listen)) { len = sizeof(accepted); @@ -2095,10 +2110,9 @@ for (;;) if (sighup_seen) { - int sk; log_write(0, LOG_MAIN, "pid %d: SIGHUP received: re-exec daemon", getpid()); - for (sk = 0; sk < listen_socket_count; sk++) + for (int sk = 0; sk < listen_socket_count; sk++) (void)close(listen_sockets[sk]); ALARM_CLR(0); signal(SIGHUP, SIG_IGN);