masqmail

annotate src/online.c @ 292:5a93bdc261ba

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No, we don't have that many bugs any more, I believe. ;-)
author markus schnalke <meillo@marmaro.de>
date Wed, 08 Dec 2010 18:19:24 -0300
parents fc1c6425c024
children f10a56dc7481
rev   line source
meillo@0 1 /* MasqMail
meillo@0 2 Copyright (C) 1999-2001 Oliver Kurth
meillo@279 3 Copyright (C) 2008, 2010 markus schnalke <meillo@marmaro.de>
meillo@0 4
meillo@0 5 This program is free software; you can redistribute it and/or modify
meillo@0 6 it under the terms of the GNU General Public License as published by
meillo@0 7 the Free Software Foundation; either version 2 of the License, or
meillo@0 8 (at your option) any later version.
meillo@0 9
meillo@0 10 This program is distributed in the hope that it will be useful,
meillo@0 11 but WITHOUT ANY WARRANTY; without even the implied warranty of
meillo@0 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
meillo@0 13 GNU General Public License for more details.
meillo@0 14
meillo@0 15 You should have received a copy of the GNU General Public License
meillo@0 16 along with this program; if not, write to the Free Software
meillo@0 17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
meillo@0 18 */
meillo@0 19
meillo@0 20 #include <sys/stat.h>
meillo@0 21 #include <sys/wait.h>
meillo@15 22
meillo@0 23 #include "masqmail.h"
meillo@0 24 #include "peopen.h"
meillo@0 25
meillo@0 26 gchar *connection_name;
meillo@0 27
meillo@10 28 void
meillo@10 29 set_online_name(gchar * name)
meillo@0 30 {
meillo@10 31 connection_name = g_strdup(name);
meillo@0 32 }
meillo@0 33
meillo@10 34 static gchar*
meillo@279 35 detect_online_file(const gchar* file)
meillo@279 36 {
meillo@279 37 struct stat st;
meillo@279 38 int err;
meillo@279 39 FILE *fptr;
meillo@279 40 char buf[256];
meillo@279 41
meillo@279 42 err = stat(conf.online_file, &st);
meillo@279 43
meillo@279 44 if (err) {
meillo@279 45 if (errno==ENOENT) {
meillo@279 46 logwrite(LOG_NOTICE, "not online.\n");
meillo@279 47 return NULL;
meillo@279 48 }
meillo@279 49 logwrite(LOG_ALERT, "stat of %s failed: %s\n", conf.online_file, strerror(errno));
meillo@279 50 return NULL;
meillo@279 51 }
meillo@279 52
meillo@279 53 fptr = fopen(conf.online_file, "r");
meillo@279 54 if (!fptr) {
meillo@279 55 logwrite(LOG_ALERT, "opening of %s failed: %s\n", conf.online_file, strerror(errno));
meillo@279 56 return NULL;
meillo@279 57 }
meillo@279 58 if (fgets(buf, 256, fptr) == NULL) {
meillo@279 59 logwrite(LOG_ALERT, "empty online file %s\n", conf.online_file);
meillo@279 60 fclose(fptr);
meillo@279 61 return NULL;
meillo@279 62 }
meillo@279 63 g_strstrip(buf); /* strip whitespace */
meillo@279 64 fclose(fptr);
meillo@279 65 if (strlen(buf) == 0) {
meillo@279 66 logwrite(LOG_ALERT, "only whitespace connection name in %s\n", conf.online_file);
meillo@279 67 return NULL;
meillo@279 68 }
meillo@279 69 return g_strdup(buf);
meillo@279 70 }
meillo@279 71
meillo@279 72 static gchar*
meillo@10 73 detect_online_pipe(const gchar * pipe)
meillo@0 74 {
meillo@10 75 pid_t pid;
meillo@10 76 void (*old_signal) (int);
meillo@10 77 int status;
meillo@10 78 FILE *in;
meillo@10 79 gchar *name = NULL;
meillo@0 80
meillo@10 81 old_signal = signal(SIGCHLD, SIG_DFL);
meillo@0 82
meillo@10 83 in = peopen(pipe, "r", environ, &pid);
meillo@33 84 if (in == NULL) {
meillo@33 85 logwrite(LOG_ALERT, "could not open pipe '%s': %s\n", pipe, strerror(errno));
meillo@33 86 signal(SIGCHLD, old_signal);
meillo@33 87 return NULL;
meillo@33 88 }
meillo@33 89
meillo@33 90 gchar output[256];
meillo@33 91 if (fgets(output, 255, in)) {
meillo@33 92 g_strchomp(g_strchug(output));
meillo@33 93 if (strlen(output) == 0) {
meillo@33 94 logwrite(LOG_ALERT, "only whitespace connection name\n");
meillo@33 95 name = NULL;
meillo@18 96 } else {
meillo@33 97 name = g_strdup(output);
meillo@10 98 }
meillo@33 99 } else {
meillo@33 100 logwrite(LOG_ALERT, "nothing read from pipe %s\n", pipe);
meillo@33 101 name = NULL;
meillo@33 102 }
meillo@33 103 fclose(in);
meillo@33 104 waitpid(pid, &status, 0);
meillo@262 105 if (WEXITSTATUS(status) != 0) {
meillo@33 106 g_free(name);
meillo@33 107 name = NULL;
meillo@33 108 }
meillo@0 109
meillo@10 110 signal(SIGCHLD, old_signal);
meillo@0 111
meillo@10 112 return name;
meillo@0 113 }
meillo@0 114
meillo@10 115 gchar*
meillo@10 116 detect_online()
meillo@0 117 {
meillo@279 118 if (!conf.online_detect) {
meillo@33 119 return NULL;
meillo@33 120 }
meillo@33 121
meillo@33 122 if (strcmp(conf.online_detect, "file") == 0) {
meillo@33 123 DEBUG(3) debugf("online detection method 'file'\n");
meillo@279 124 if (!conf.online_file) {
meillo@33 125 logwrite(LOG_ALERT, "online detection mode is 'file', but online_file is undefined\n");
meillo@33 126 return NULL;
meillo@33 127 }
meillo@279 128 return detect_online_file(conf.online_file);
meillo@33 129
meillo@33 130 } else if (strcmp(conf.online_detect, "pipe") == 0) {
meillo@33 131 DEBUG(3) debugf("connection method 'pipe'\n");
meillo@279 132 if (!conf.online_pipe) {
meillo@33 133 logwrite(LOG_ALERT, "online detection mode is 'pipe', but online_pipe is undefined\n");
meillo@33 134 return NULL;
meillo@33 135 }
meillo@279 136 return detect_online_pipe(conf.online_pipe);
meillo@279 137
meillo@33 138 } else if (strcmp(conf.online_detect, "argument") == 0) {
meillo@279 139 DEBUG(3) debugf("online route literally defined\n");
meillo@279 140 /* use the name set with set_online_name() */
meillo@33 141 return connection_name;
meillo@279 142
meillo@0 143 }
meillo@33 144
meillo@279 145 DEBUG(3) debugf("unknown online detection method `%s'\n", conf.online_detect);
meillo@0 146 return NULL;
meillo@0 147 }