masqmail

view src/fail_msg.c @ 323:29de6a1c4538

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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 09:47:27 +0200
parents 82d168dd52fd
children 41958685480d
line source
1 /* MasqMail
2 Copyright (C) 2000-2001 Oliver Kurth
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17 */
18
19 #include <sys/wait.h>
20
21 #include "masqmail.h"
22 #include "peopen.h"
23 #include "readsock.h"
24
25 gboolean
26 fail_msg(message * msg, gchar * template, GList * failed_rcpts, gchar * err_fmt, va_list args)
27 {
28 gboolean ok = FALSE;
29 address *ret_path = NULL;
30
31 /* do not bounce bounces, send to postmaster instead */
32 if (msg->return_path->local_part[0] == '\0') {
33 GList *node;
34
35 ret_path = create_address_qualified("postmaster", TRUE, conf.host_name);
36 foreach(failed_rcpts, node) {
37 address *addr = (address *) (node->data);
38
39 if (addr_isequal_parent(addr, ret_path, strcasecmp)) {
40 logwrite(LOG_ALERT, "%s == %s: postmaster address failed\n", msg->uid, addr_string(ret_path));
41 return FALSE;
42 }
43 }
44 } else
45 ret_path = copy_address(msg->return_path);
46
47 DEBUG(1) debugf("sending failure notice to %s.\n", addr_string(ret_path));
48
49 if (template) {
50 FILE *file;
51 GList *var_table = var_table_conf(var_table_msg(NULL, msg));
52 gchar *err_msg = g_strdup_vprintf(err_fmt, args);
53
54 var_table = g_list_prepend(var_table, create_pair_string("err_msg", err_msg));
55 g_free(err_msg);
56
57 if ((file = fopen(template, "r"))) {
58 FILE *out;
59 gchar *cmd;
60 pid_t pid;
61
62 cmd = g_strdup_printf(SBINDIR "/masqmail -oi -f <> %s@%s", ret_path->local_part, ret_path->domain);
63 if ((out = peidopen(cmd, "w", environ, &pid, conf.mail_uid, conf.mail_gid))) {
64 gchar fmt[256], line[256];
65 int status, ret;
66
67 while ((ret = read_sockline(file, fmt, 256, 0, 0)) > 0) {
68 if (fmt[0] == '@') {
69 GList *node;
70 if (strncmp(fmt, "@failed_rcpts", 13) == 0) {
71 foreach(failed_rcpts, node) {
72 address *rcpt = (address *) (node->data);
73 fprintf(out, "\t%s\n", addr_string(rcpt));
74 }
75 } else if (strncmp(fmt, "@msg_headers", 12) == 0) {
76 foreach(msg->hdr_list, node) {
77 header *hdr = (header *) (node->data);
78 fputs(hdr->header, out);
79 }
80 } else if (strncmp(fmt, "@msg_body", 9) == 0) {
81 /* we may have to read the data at this point and remember if we did */
82 gboolean flag = (msg->data_list == NULL);
83 if (flag) {
84 if (!spool_read_data(msg)) {
85 logwrite(LOG_ALERT, "could not open data spool file %s\n", msg->uid);
86 }
87 }
88 foreach(msg->data_list, node) {
89 gchar *line = (gchar *) (node->data);
90 fputs(line, out);
91 }
92 if (flag)
93 msg_free_data(msg);
94 }
95 } else {
96 expand(var_table, fmt, line, 256);
97 fputs(line, out);
98 }
99 }
100
101 fclose(out);
102 waitpid(pid, &status, 0);
103 if ((WEXITSTATUS(status) != 0) || WIFSIGNALED(status)) {
104 if (WEXITSTATUS(status) != 0)
105 logwrite(LOG_WARNING, "child returned %d\n", WEXITSTATUS(status));
106 if (WIFSIGNALED(status))
107 logwrite(LOG_WARNING, "child got signal: %d\n", WTERMSIG(status));
108 } else
109 ok = TRUE;
110 } else {
111 logwrite(LOG_ERR, "peopen failed: %s\n", strerror(errno));
112 }
113 g_free(cmd);
114 fclose(file);
115 } else
116 logwrite(LOG_ALERT, "could not open failure message template %s: %s\n", conf.errmsg_file, strerror(errno));
117
118 destroy_table(var_table);
119 }
120
121 destroy_address(ret_path);
122
123 return ok;
124 }
125
126 /*
127 ival : |--|--|----|--------|--------|
128 warned: |-------W-------------W------
129 result: |nnnyyyynnnnyyyyyyyyyynnnnnnn
130 */
131
132 static gboolean
133 warn_msg_is_due(message * msg)
134 {
135 time_t now = time(NULL);
136
137 GList *node;
138 for (node = g_list_last(conf.warn_intervals); node; node = g_list_previous(node)) {
139 gchar *str_ival = (gchar *) (node->data);
140 gint ival = time_interval(str_ival);
141 if (ival >= 0) {
142 DEBUG(5) debugf("ival = %d\n", ival);
143 DEBUG(5) debugf("now - msg->received_time = %d\n", now - msg->received_time);
144 if ((now - msg->received_time) > ival) {
145 if (msg->warned_time != 0) {
146 if ((msg->warned_time - msg->received_time) < ival)
147 return TRUE;
148 } else
149 return TRUE;
150 }
151 } else
152 logwrite(LOG_WARNING, "invalid time interval: %s\n", str_ival);
153 }
154 return FALSE;
155 }
156
157 gboolean
158 warn_msg(message * msg, gchar * template, GList * defered_rcpts, gchar * err_fmt, va_list args)
159 {
160 time_t now = time(NULL);
161
162 if (warn_msg_is_due(msg)) {
163 if (fail_msg(msg, template, defered_rcpts, err_fmt, args)) {
164 msg->warned_time = now;
165 return TRUE;
166 } else
167 return FALSE;
168 }
169 return TRUE;
170 }