masqmail

view src/fail_msg.c @ 222:8cddc65765bd

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added support for STARTTLS wrappers added the route config option `instant_helo' which causes masqmail, as SMTP client, not to wait for the server's 220 greeting. Instead if says EHLO right at once. You'll need this for STARTTLS wrappers that usually eat the greeting line.
author meillo@marmaro.de
date Fri, 23 Jul 2010 10:57:53 +0200
parents f671821d8222
children bc9d9cd9ee8e
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 if (addr_isequal_parent(addr, ret_path)) {
39 logwrite(LOG_ALERT, "%s == %s: postmaster address failed\n", msg->uid, addr_string(ret_path));
40 return FALSE;
41 }
42 }
43 } else
44 ret_path = copy_address(msg->return_path);
45
46 DEBUG(1) debugf("sending failure notice to %s.\n", addr_string(ret_path));
47
48 if (template) {
49 FILE *file;
50 GList *var_table = var_table_conf(var_table_msg(NULL, msg));
51 gchar *err_msg = g_strdup_vprintf(err_fmt, args);
52
53 var_table = g_list_prepend(var_table, create_pair_string("err_msg", err_msg));
54 g_free(err_msg);
55
56 if ((file = fopen(template, "r"))) {
57 FILE *out;
58 gchar *cmd;
59 pid_t pid;
60
61 cmd = g_strdup_printf(SBINDIR "/masqmail -oi -f <> %s@%s", ret_path->local_part, ret_path->domain);
62 if ((out = peidopen(cmd, "w", environ, &pid, conf.mail_uid, conf.mail_gid))) {
63 gchar fmt[256], line[256];
64 int status, ret;
65
66 while ((ret = read_sockline(file, fmt, 256, 0, 0)) > 0) {
67 if (fmt[0] == '@') {
68 GList *node;
69 if (strncmp(fmt, "@failed_rcpts", 13) == 0) {
70 foreach(failed_rcpts, node) {
71 address *rcpt = (address *) (node->data);
72 fprintf(out, "\t%s\n", addr_string(rcpt));
73 }
74 } else if (strncmp(fmt, "@msg_headers", 12) == 0) {
75 foreach(msg->hdr_list, node) {
76 header *hdr = (header *) (node->data);
77 fputs(hdr->header, out);
78 }
79 } else if (strncmp(fmt, "@msg_body", 9) == 0) {
80 /* we may have to read the data at this point and remember if we did */
81 gboolean flag = (msg->data_list == NULL);
82 if (flag) {
83 if (!spool_read_data(msg)) {
84 logwrite(LOG_ALERT, "could not open data spool file %s\n", msg->uid);
85 }
86 }
87 foreach(msg->data_list, node) {
88 gchar *line = (gchar *) (node->data);
89 fputs(line, out);
90 }
91 if (flag)
92 msg_free_data(msg);
93 }
94 } else {
95 expand(var_table, fmt, line, 256);
96 fputs(line, out);
97 }
98 }
99
100 fclose(out);
101 waitpid(pid, &status, 0);
102 if ((WEXITSTATUS(status) != EXIT_SUCCESS) || WIFSIGNALED(status)) {
103 if (WEXITSTATUS(status) != EXIT_SUCCESS)
104 logwrite(LOG_WARNING, "child returned %d\n", WEXITSTATUS(status));
105 if (WIFSIGNALED(status))
106 logwrite(LOG_WARNING, "child got signal: %d\n", WTERMSIG(status));
107 } else
108 ok = TRUE;
109 } else {
110 logwrite(LOG_ERR, "peopen failed: %s\n", strerror(errno));
111 }
112 g_free(cmd);
113 fclose(file);
114 } else
115 logwrite(LOG_ALERT, "could not open failure message template %s: %s\n", conf.errmsg_file, strerror(errno));
116
117 destroy_table(var_table);
118 }
119
120 destroy_address(ret_path);
121
122 return ok;
123 }
124
125 /*
126 ival : |--|--|----|--------|--------|
127 warned: |-------W-------------W------
128 result: |nnnyyyynnnnyyyyyyyyyynnnnnnn
129 */
130
131 static gboolean
132 warn_msg_is_due(message * msg)
133 {
134 time_t now = time(NULL);
135 gint dummy;
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, &dummy);
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 }