masqmail

annotate src/fail_msg.c @ 246:4cff8638dd9b

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SMTP client: tries EHLO now always first Changed the behavior of the SMTP client. Now always an EHLO greeting is sent, no matter what kind of greeting text the server had sent. If the EHLO failed, an HELO greeting is tried as fall back. This is the behavior RFC 2821 requires (section 3.2). This change will fix setups that were not possible to sent to a server because that requires AUTH but hadn't said ``ESMTP'' in its greeting message. See also: Debian bug #349211 Thanks to Steffen (inne)
author markus schnalke <meillo@marmaro.de>
date Thu, 28 Oct 2010 16:40:02 -0300
parents dcb315792513
children 82d168dd52fd
rev   line source
meillo@0 1 /* MasqMail
meillo@0 2 Copyright (C) 2000-2001 Oliver Kurth
meillo@0 3 *
meillo@0 4 * This program is free software; you can redistribute it and/or modify
meillo@0 5 * it under the terms of the GNU General Public License as published by
meillo@0 6 * the Free Software Foundation; either version 2 of the License, or
meillo@0 7 * (at your option) any later version.
meillo@10 8 *
meillo@0 9 * This program is distributed in the hope that it will be useful,
meillo@0 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
meillo@0 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
meillo@0 12 * GNU General Public License for more details.
meillo@0 13 *
meillo@0 14 * You should have received a copy of the GNU General Public License
meillo@0 15 * along with this program; if not, write to the Free Software
meillo@0 16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
meillo@0 17 */
meillo@0 18
meillo@0 19 #include <sys/wait.h>
meillo@0 20
meillo@0 21 #include "masqmail.h"
meillo@0 22 #include "peopen.h"
meillo@0 23 #include "readsock.h"
meillo@0 24
meillo@10 25 gboolean
meillo@10 26 fail_msg(message * msg, gchar * template, GList * failed_rcpts, gchar * err_fmt, va_list args)
meillo@0 27 {
meillo@10 28 gboolean ok = FALSE;
meillo@10 29 address *ret_path = NULL;
meillo@0 30
meillo@10 31 /* do not bounce bounces, send to postmaster instead */
meillo@15 32 if (msg->return_path->local_part[0] == '\0') {
meillo@10 33 GList *node;
meillo@0 34
meillo@10 35 ret_path = create_address_qualified("postmaster", TRUE, conf.host_name);
meillo@10 36 foreach(failed_rcpts, node) {
meillo@10 37 address *addr = (address *) (node->data);
meillo@242 38
meillo@242 39 if (addr_isequal_parent(addr, ret_path, strcasecmp)) {
meillo@10 40 logwrite(LOG_ALERT, "%s == %s: postmaster address failed\n", msg->uid, addr_string(ret_path));
meillo@10 41 return FALSE;
meillo@10 42 }
meillo@10 43 }
meillo@10 44 } else
meillo@10 45 ret_path = copy_address(msg->return_path);
meillo@0 46
meillo@10 47 DEBUG(1) debugf("sending failure notice to %s.\n", addr_string(ret_path));
meillo@0 48
meillo@10 49 if (template) {
meillo@10 50 FILE *file;
meillo@10 51 GList *var_table = var_table_conf(var_table_msg(NULL, msg));
meillo@10 52 gchar *err_msg = g_strdup_vprintf(err_fmt, args);
meillo@0 53
meillo@10 54 var_table = g_list_prepend(var_table, create_pair_string("err_msg", err_msg));
meillo@10 55 g_free(err_msg);
meillo@0 56
meillo@10 57 if ((file = fopen(template, "r"))) {
meillo@10 58 FILE *out;
meillo@10 59 gchar *cmd;
meillo@10 60 pid_t pid;
meillo@0 61
meillo@10 62 cmd = g_strdup_printf(SBINDIR "/masqmail -oi -f <> %s@%s", ret_path->local_part, ret_path->domain);
meillo@10 63 if ((out = peidopen(cmd, "w", environ, &pid, conf.mail_uid, conf.mail_gid))) {
meillo@10 64 gchar fmt[256], line[256];
meillo@10 65 int status, ret;
meillo@0 66
meillo@10 67 while ((ret = read_sockline(file, fmt, 256, 0, 0)) > 0) {
meillo@10 68 if (fmt[0] == '@') {
meillo@10 69 GList *node;
meillo@10 70 if (strncmp(fmt, "@failed_rcpts", 13) == 0) {
meillo@10 71 foreach(failed_rcpts, node) {
meillo@10 72 address *rcpt = (address *) (node->data);
meillo@10 73 fprintf(out, "\t%s\n", addr_string(rcpt));
meillo@10 74 }
meillo@10 75 } else if (strncmp(fmt, "@msg_headers", 12) == 0) {
meillo@10 76 foreach(msg->hdr_list, node) {
meillo@10 77 header *hdr = (header *) (node->data);
meillo@10 78 fputs(hdr->header, out);
meillo@10 79 }
meillo@10 80 } else if (strncmp(fmt, "@msg_body", 9) == 0) {
meillo@15 81 /* we may have to read the data at this point and remember if we did */
meillo@10 82 gboolean flag = (msg->data_list == NULL);
meillo@10 83 if (flag) {
meillo@10 84 if (!spool_read_data(msg)) {
meillo@10 85 logwrite(LOG_ALERT, "could not open data spool file %s\n", msg->uid);
meillo@10 86 }
meillo@10 87 }
meillo@10 88 foreach(msg->data_list, node) {
meillo@10 89 gchar *line = (gchar *) (node->data);
meillo@10 90 fputs(line, out);
meillo@10 91 }
meillo@10 92 if (flag)
meillo@10 93 msg_free_data(msg);
meillo@10 94 }
meillo@10 95 } else {
meillo@10 96 expand(var_table, fmt, line, 256);
meillo@10 97 fputs(line, out);
meillo@10 98 }
meillo@10 99 }
meillo@10 100
meillo@10 101 fclose(out);
meillo@10 102 waitpid(pid, &status, 0);
meillo@10 103 if ((WEXITSTATUS(status) != EXIT_SUCCESS) || WIFSIGNALED(status)) {
meillo@10 104 if (WEXITSTATUS(status) != EXIT_SUCCESS)
meillo@10 105 logwrite(LOG_WARNING, "child returned %d\n", WEXITSTATUS(status));
meillo@10 106 if (WIFSIGNALED(status))
meillo@10 107 logwrite(LOG_WARNING, "child got signal: %d\n", WTERMSIG(status));
meillo@10 108 } else
meillo@10 109 ok = TRUE;
meillo@10 110 } else {
meillo@10 111 logwrite(LOG_ERR, "peopen failed: %s\n", strerror(errno));
meillo@10 112 }
meillo@10 113 g_free(cmd);
meillo@10 114 fclose(file);
meillo@10 115 } else
meillo@10 116 logwrite(LOG_ALERT, "could not open failure message template %s: %s\n", conf.errmsg_file, strerror(errno));
meillo@10 117
meillo@10 118 destroy_table(var_table);
meillo@0 119 }
meillo@0 120
meillo@10 121 destroy_address(ret_path);
meillo@0 122
meillo@10 123 return ok;
meillo@0 124 }
meillo@0 125
meillo@0 126 /*
meillo@0 127 ival : |--|--|----|--------|--------|
meillo@0 128 warned: |-------W-------------W------
meillo@0 129 result: |nnnyyyynnnnyyyyyyyyyynnnnnnn
meillo@0 130 */
meillo@0 131
meillo@10 132 static gboolean
meillo@10 133 warn_msg_is_due(message * msg)
meillo@0 134 {
meillo@10 135 time_t now = time(NULL);
meillo@10 136 gint dummy;
meillo@10 137
meillo@10 138 GList *node;
meillo@10 139 for (node = g_list_last(conf.warn_intervals); node; node = g_list_previous(node)) {
meillo@10 140 gchar *str_ival = (gchar *) (node->data);
meillo@10 141 gint ival = time_interval(str_ival, &dummy);
meillo@10 142 if (ival >= 0) {
meillo@10 143 DEBUG(5) debugf("ival = %d\n", ival);
meillo@10 144 DEBUG(5) debugf("now - msg->received_time = %d\n", now - msg->received_time);
meillo@10 145 if ((now - msg->received_time) > ival) {
meillo@10 146 if (msg->warned_time != 0) {
meillo@10 147 if ((msg->warned_time - msg->received_time) < ival)
meillo@10 148 return TRUE;
meillo@10 149 } else
meillo@10 150 return TRUE;
meillo@10 151 }
meillo@10 152 } else
meillo@10 153 logwrite(LOG_WARNING, "invalid time interval: %s\n", str_ival);
meillo@10 154 }
meillo@10 155 return FALSE;
meillo@0 156 }
meillo@0 157
meillo@10 158 gboolean
meillo@10 159 warn_msg(message * msg, gchar * template, GList * defered_rcpts, gchar * err_fmt, va_list args)
meillo@0 160 {
meillo@10 161 time_t now = time(NULL);
meillo@0 162
meillo@10 163 if (warn_msg_is_due(msg)) {
meillo@10 164 if (fail_msg(msg, template, defered_rcpts, err_fmt, args)) {
meillo@10 165 msg->warned_time = now;
meillo@10 166 return TRUE;
meillo@10 167 } else
meillo@10 168 return FALSE;
meillo@10 169 }
meillo@10 170 return TRUE;
meillo@0 171 }