masqmail-0.2

view src/online.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 8a92de5e8907
children
line source
1 /* MasqMail
2 Copyright (C) 1999-2001 Oliver Kurth
3 Copyright (C) 2008 markus schnalke <meillo@marmaro.de>
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18 */
19
20 #include <sys/stat.h>
21 #include <sys/wait.h>
22
23 #include "masqmail.h"
24 #include "mserver.h"
25 #include "peopen.h"
26
27 gchar *connection_name;
28
29 void
30 set_online_name(gchar * name)
31 {
32 connection_name = g_strdup(name);
33 }
34
35 static gchar*
36 detect_online_pipe(const gchar * pipe)
37 {
38 pid_t pid;
39 void (*old_signal) (int);
40 int status;
41 FILE *in;
42 gchar *name = NULL;
43
44 old_signal = signal(SIGCHLD, SIG_DFL);
45
46 in = peopen(pipe, "r", environ, &pid);
47 if (in == NULL) {
48 logwrite(LOG_ALERT, "could not open pipe '%s': %s\n", pipe, strerror(errno));
49 signal(SIGCHLD, old_signal);
50 return NULL;
51 }
52
53 gchar output[256];
54 if (fgets(output, 255, in)) {
55 g_strchomp(g_strchug(output));
56 if (strlen(output) == 0) {
57 logwrite(LOG_ALERT, "only whitespace connection name\n");
58 name = NULL;
59 } else {
60 name = g_strdup(output);
61 }
62 } else {
63 logwrite(LOG_ALERT, "nothing read from pipe %s\n", pipe);
64 name = NULL;
65 }
66 fclose(in);
67 waitpid(pid, &status, 0);
68 if (WEXITSTATUS(status) != EXIT_SUCCESS) {
69 g_free(name);
70 name = NULL;
71 }
72
73 signal(SIGCHLD, old_signal);
74
75 return name;
76 }
77
78 gchar*
79 detect_online()
80 {
81 if (conf.online_detect == NULL) {
82 return NULL;
83 }
84
85 if (strcmp(conf.online_detect, "file") == 0) {
86 DEBUG(3) debugf("online detection method 'file'\n");
87 if (conf.online_file == NULL) {
88 logwrite(LOG_ALERT, "online detection mode is 'file', but online_file is undefined\n");
89 return NULL;
90 }
91
92 struct stat st;
93 if (stat(conf.online_file, &st) == 0) {
94 FILE *fptr = fopen(conf.online_file, "r");
95 if (!fptr) {
96 logwrite(LOG_ALERT, "opening of %s failed: %s\n", conf.online_file, strerror(errno));
97 return NULL;
98 }
99 char buf[256];
100 if (fgets(buf, 256, fptr) == NULL) {
101 logwrite(LOG_ALERT, "empty online file %s\n", conf.online_file);
102 fclose(fptr);
103 return NULL;
104 }
105 g_strchomp(g_strchug(buf));
106 fclose(fptr);
107 if (strlen(buf) == 0) {
108 logwrite(LOG_ALERT, "only whitespace connection name in %s\n", conf.online_file);
109 return NULL;
110 }
111 return g_strdup(buf);
112 } else if (errno == ENOENT) {
113 logwrite(LOG_NOTICE, "not online.\n");
114 return NULL;
115 } else {
116 logwrite(LOG_ALERT, "stat of %s failed: %s", conf.online_file, strerror(errno));
117 return NULL;
118 }
119
120 #ifdef ENABLE_MSERVER
121 } else if (strcmp(conf.online_detect, "mserver") == 0) {
122 DEBUG(3) debugf("connection method 'mserver'\n");
123 return mserver_detect_online(conf.mserver_iface);
124 #endif
125 } else if (strcmp(conf.online_detect, "pipe") == 0) {
126 DEBUG(3) debugf("connection method 'pipe'\n");
127 if (conf.online_pipe)
128 return detect_online_pipe(conf.online_pipe);
129 else {
130 logwrite(LOG_ALERT, "online detection mode is 'pipe', but online_pipe is undefined\n");
131 return NULL;
132 }
133 } else if (strcmp(conf.online_detect, "argument") == 0) {
134 return connection_name;
135 } else {
136 DEBUG(3) debugf("no connection method selected\n");
137 }
138
139 return NULL;
140 }