masqmail

annotate src/fail_msg.c @ 281:ea5f86e0a81c

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modes are now enforced exclusive Other MTAs (exim, postfix) are more relaxing, but as combinations of exclusive modes are senseless we behave more obvious if we fail early. This makes understanding the behavior easier too.
author markus schnalke <meillo@marmaro.de>
date Tue, 07 Dec 2010 14:04:56 -0300
parents 82d168dd52fd
children 41958685480d
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@262 103 if ((WEXITSTATUS(status) != 0) || WIFSIGNALED(status)) {
meillo@262 104 if (WEXITSTATUS(status) != 0)
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
meillo@10 137 GList *node;
meillo@10 138 for (node = g_list_last(conf.warn_intervals); node; node = g_list_previous(node)) {
meillo@10 139 gchar *str_ival = (gchar *) (node->data);
meillo@254 140 gint ival = time_interval(str_ival);
meillo@10 141 if (ival >= 0) {
meillo@10 142 DEBUG(5) debugf("ival = %d\n", ival);
meillo@10 143 DEBUG(5) debugf("now - msg->received_time = %d\n", now - msg->received_time);
meillo@10 144 if ((now - msg->received_time) > ival) {
meillo@10 145 if (msg->warned_time != 0) {
meillo@10 146 if ((msg->warned_time - msg->received_time) < ival)
meillo@10 147 return TRUE;
meillo@10 148 } else
meillo@10 149 return TRUE;
meillo@10 150 }
meillo@10 151 } else
meillo@10 152 logwrite(LOG_WARNING, "invalid time interval: %s\n", str_ival);
meillo@10 153 }
meillo@10 154 return FALSE;
meillo@0 155 }
meillo@0 156
meillo@10 157 gboolean
meillo@10 158 warn_msg(message * msg, gchar * template, GList * defered_rcpts, gchar * err_fmt, va_list args)
meillo@0 159 {
meillo@10 160 time_t now = time(NULL);
meillo@0 161
meillo@10 162 if (warn_msg_is_due(msg)) {
meillo@10 163 if (fail_msg(msg, template, defered_rcpts, err_fmt, args)) {
meillo@10 164 msg->warned_time = now;
meillo@10 165 return TRUE;
meillo@10 166 } else
meillo@10 167 return FALSE;
meillo@10 168 }
meillo@10 169 return TRUE;
meillo@0 170 }