masqmail-0.2

annotate src/fail_msg.c @ 179:ec3fe72a3e99

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Fixed an important bug with folded headers! g_strconcat() returns a *copy* of the string, but hdr->value still pointed to the old header (which probably was a memory leak, too). If the folded part had been quite small it was likely that the new string was at the same position as the old one, thus making everything go well. But if pretty long headers were folded several times it was likely that the new string was allocated somewhere else in memory, thus breaking things. In result mails to lots of recipients (folded header) were frequently only sent to the ones in the first line. Sorry for the inconvenience.
author meillo@marmaro.de
date Fri, 03 Jun 2011 09:52:17 +0200
parents 26e34ae9a3e3
children
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@10 38 if (addr_isequal_parent(addr, ret_path)) {
meillo@10 39 logwrite(LOG_ALERT, "%s == %s: postmaster address failed\n", msg->uid, addr_string(ret_path));
meillo@10 40 return FALSE;
meillo@10 41 }
meillo@10 42 }
meillo@10 43 } else
meillo@10 44 ret_path = copy_address(msg->return_path);
meillo@0 45
meillo@10 46 DEBUG(1) debugf("sending failure notice to %s.\n", addr_string(ret_path));
meillo@0 47
meillo@10 48 if (template) {
meillo@10 49 FILE *file;
meillo@10 50 GList *var_table = var_table_conf(var_table_msg(NULL, msg));
meillo@10 51 gchar *err_msg = g_strdup_vprintf(err_fmt, args);
meillo@0 52
meillo@10 53 var_table = g_list_prepend(var_table, create_pair_string("err_msg", err_msg));
meillo@10 54 g_free(err_msg);
meillo@0 55
meillo@10 56 if ((file = fopen(template, "r"))) {
meillo@10 57 FILE *out;
meillo@10 58 gchar *cmd;
meillo@10 59 pid_t pid;
meillo@0 60
meillo@10 61 // cmd = g_strdup_printf(SBINDIR"/masqmail -oi -f \"<>\" %s@%s",
meillo@10 62 // ret_path->local_part, ret_path->domain);
meillo@10 63 cmd = g_strdup_printf(SBINDIR "/masqmail -oi -f <> %s@%s", ret_path->local_part, ret_path->domain);
meillo@10 64 if ((out = peidopen(cmd, "w", environ, &pid, conf.mail_uid, conf.mail_gid))) {
meillo@10 65 gchar fmt[256], line[256];
meillo@10 66 int status, ret;
meillo@0 67
meillo@10 68 while ((ret = read_sockline(file, fmt, 256, 0, 0)) > 0) {
meillo@10 69 if (fmt[0] == '@') {
meillo@10 70 GList *node;
meillo@10 71 if (strncmp(fmt, "@failed_rcpts", 13) == 0) {
meillo@10 72 foreach(failed_rcpts, node) {
meillo@10 73 address *rcpt = (address *) (node->data);
meillo@10 74 fprintf(out, "\t%s\n", addr_string(rcpt));
meillo@10 75 }
meillo@10 76 } else if (strncmp(fmt, "@msg_headers", 12) == 0) {
meillo@10 77 foreach(msg->hdr_list, node) {
meillo@10 78 header *hdr = (header *) (node->data);
meillo@10 79 fputs(hdr->header, out);
meillo@10 80 }
meillo@10 81 } else if (strncmp(fmt, "@msg_body", 9) == 0) {
meillo@15 82 /* we may have to read the data at this point and remember if we did */
meillo@10 83 gboolean flag = (msg->data_list == NULL);
meillo@10 84 if (flag) {
meillo@10 85 if (!spool_read_data(msg)) {
meillo@10 86 logwrite(LOG_ALERT, "could not open data spool file %s\n", msg->uid);
meillo@10 87 }
meillo@10 88 }
meillo@10 89 foreach(msg->data_list, node) {
meillo@10 90 gchar *line = (gchar *) (node->data);
meillo@10 91 fputs(line, out);
meillo@10 92 }
meillo@10 93 if (flag)
meillo@10 94 msg_free_data(msg);
meillo@10 95 }
meillo@10 96 } else {
meillo@10 97 expand(var_table, fmt, line, 256);
meillo@10 98 fputs(line, out);
meillo@10 99 }
meillo@10 100 }
meillo@10 101
meillo@10 102 fclose(out);
meillo@10 103 waitpid(pid, &status, 0);
meillo@10 104 if ((WEXITSTATUS(status) != EXIT_SUCCESS) || WIFSIGNALED(status)) {
meillo@10 105 if (WEXITSTATUS(status) != EXIT_SUCCESS)
meillo@10 106 logwrite(LOG_WARNING, "child returned %d\n", WEXITSTATUS(status));
meillo@10 107 if (WIFSIGNALED(status))
meillo@10 108 logwrite(LOG_WARNING, "child got signal: %d\n", WTERMSIG(status));
meillo@10 109 } else
meillo@10 110 ok = TRUE;
meillo@10 111 } else {
meillo@10 112 logwrite(LOG_ERR, "peopen failed: %s\n", strerror(errno));
meillo@10 113 }
meillo@10 114 g_free(cmd);
meillo@10 115 fclose(file);
meillo@10 116 } else
meillo@10 117 logwrite(LOG_ALERT, "could not open failure message template %s: %s\n", conf.errmsg_file, strerror(errno));
meillo@10 118
meillo@10 119 destroy_table(var_table);
meillo@0 120 }
meillo@0 121
meillo@10 122 destroy_address(ret_path);
meillo@0 123
meillo@10 124 return ok;
meillo@0 125 }
meillo@0 126
meillo@0 127 /*
meillo@0 128 ival : |--|--|----|--------|--------|
meillo@0 129 warned: |-------W-------------W------
meillo@0 130 result: |nnnyyyynnnnyyyyyyyyyynnnnnnn
meillo@0 131 */
meillo@0 132
meillo@10 133 static gboolean
meillo@10 134 warn_msg_is_due(message * msg)
meillo@0 135 {
meillo@10 136 time_t now = time(NULL);
meillo@10 137 gint dummy;
meillo@10 138
meillo@10 139 GList *node;
meillo@10 140 for (node = g_list_last(conf.warn_intervals); node; node = g_list_previous(node)) {
meillo@10 141 gchar *str_ival = (gchar *) (node->data);
meillo@10 142 gint ival = time_interval(str_ival, &dummy);
meillo@10 143 if (ival >= 0) {
meillo@10 144 DEBUG(5) debugf("ival = %d\n", ival);
meillo@10 145 DEBUG(5) debugf("now - msg->received_time = %d\n", now - msg->received_time);
meillo@10 146 if ((now - msg->received_time) > ival) {
meillo@10 147 if (msg->warned_time != 0) {
meillo@10 148 if ((msg->warned_time - msg->received_time) < ival)
meillo@10 149 return TRUE;
meillo@10 150 } else
meillo@10 151 return TRUE;
meillo@10 152 }
meillo@10 153 } else
meillo@10 154 logwrite(LOG_WARNING, "invalid time interval: %s\n", str_ival);
meillo@10 155 }
meillo@10 156 return FALSE;
meillo@0 157 }
meillo@0 158
meillo@10 159 gboolean
meillo@10 160 warn_msg(message * msg, gchar * template, GList * defered_rcpts, gchar * err_fmt, va_list args)
meillo@0 161 {
meillo@10 162 time_t now = time(NULL);
meillo@0 163
meillo@10 164 if (warn_msg_is_due(msg)) {
meillo@10 165 if (fail_msg(msg, template, defered_rcpts, err_fmt, args)) {
meillo@10 166 msg->warned_time = now;
meillo@10 167 return TRUE;
meillo@10 168 } else
meillo@10 169 return FALSE;
meillo@10 170 }
meillo@10 171 return TRUE;
meillo@0 172 }