meillo@0: /*  MasqMail
meillo@0:     Copyright (C) 1999-2001 Oliver Kurth
meillo@19:     Copyright 2008 markus schnalke <meillo@marmaro.de>
meillo@0: 
meillo@0:     This program is free software; you can redistribute it and/or modify
meillo@0:     it under the terms of the GNU General Public License as published by
meillo@0:     the Free Software Foundation; either version 2 of the License, or
meillo@0:     (at your option) any later version.
meillo@0: 
meillo@0:     This program is distributed in the hope that it will be useful,
meillo@0:     but WITHOUT ANY WARRANTY; without even the implied warranty of
meillo@0:     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
meillo@0:     GNU General Public License for more details.
meillo@0: 
meillo@0:     You should have received a copy of the GNU General Public License
meillo@0:     along with this program; if not, write to the Free Software
meillo@0:     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
meillo@0: */
meillo@0: 
meillo@0: #include <sys/stat.h>
meillo@0: #include <sys/wait.h>
meillo@15: 
meillo@0: #include "masqmail.h"
meillo@0: #include "mserver.h"
meillo@0: #include "peopen.h"
meillo@0: 
meillo@0: gchar *connection_name;
meillo@0: 
meillo@10: void
meillo@10: set_online_name(gchar * name)
meillo@0: {
meillo@10: 	connection_name = g_strdup(name);
meillo@0: }
meillo@0: 
meillo@10: static gchar*
meillo@10: detect_online_pipe(const gchar * pipe)
meillo@0: {
meillo@10: 	pid_t pid;
meillo@10: 	void (*old_signal) (int);
meillo@10: 	int status;
meillo@10: 	FILE *in;
meillo@10: 	gchar *name = NULL;
meillo@0: 
meillo@10: 	old_signal = signal(SIGCHLD, SIG_DFL);
meillo@0: 
meillo@10: 	in = peopen(pipe, "r", environ, &pid);
meillo@33: 	if (in == NULL) {
meillo@33: 		logwrite(LOG_ALERT, "could not open pipe '%s': %s\n", pipe, strerror(errno));
meillo@33: 		signal(SIGCHLD, old_signal);
meillo@33: 		return NULL;
meillo@33: 	}
meillo@33: 
meillo@33: 	gchar output[256];
meillo@33: 	if (fgets(output, 255, in)) {
meillo@33: 		g_strchomp(g_strchug(output));
meillo@33: 		if (strlen(output) == 0) {
meillo@33: 			logwrite(LOG_ALERT, "only whitespace connection name\n");
meillo@33: 			name = NULL;
meillo@18: 		} else {
meillo@33: 			name = g_strdup(output);
meillo@10: 		}
meillo@33: 	} else {
meillo@33: 		logwrite(LOG_ALERT, "nothing read from pipe %s\n", pipe);
meillo@33: 		name = NULL;
meillo@33: 	}
meillo@33: 	fclose(in);
meillo@33: 	waitpid(pid, &status, 0);
meillo@33: 	if (WEXITSTATUS(status) != EXIT_SUCCESS) {
meillo@33: 		g_free(name);
meillo@33: 		name = NULL;
meillo@33: 	}
meillo@0: 
meillo@10: 	signal(SIGCHLD, old_signal);
meillo@0: 
meillo@10: 	return name;
meillo@0: }
meillo@0: 
meillo@10: gchar*
meillo@10: detect_online()
meillo@0: {
meillo@33: 	if (conf.online_detect == NULL) {
meillo@33: 		return NULL;
meillo@33: 	}
meillo@33: 
meillo@33: 	if (strcmp(conf.online_detect, "file") == 0) {
meillo@33: 		DEBUG(3) debugf("online detection method 'file'\n");
meillo@33: 		if (conf.online_file != NULL) {
meillo@33: 			logwrite(LOG_ALERT, "online detection mode is 'file', but online_file is undefined\n");
meillo@33: 			return NULL;
meillo@33: 		}
meillo@33: 
meillo@33: 		struct stat st;
meillo@33: 		if (stat(conf.online_file, &st) == 0) {
meillo@33: 			FILE *fptr = fopen(conf.online_file, "r");
meillo@33: 			if (!fptr) {
meillo@33: 				logwrite(LOG_ALERT, "opening of %s failed: %s\n", conf.online_file, strerror(errno));
meillo@10: 				return NULL;
meillo@10: 			}
meillo@33: 			char buf[256];
meillo@33: 			if (fgets(buf, 256, fptr) == NULL) {
meillo@33: 				logwrite(LOG_ALERT, "empty online file %s\n", conf.online_file);
meillo@33: 				fclose(fptr);
meillo@33: 				return NULL;
meillo@33: 			}
meillo@33: 			g_strchomp(g_strchug(buf));
meillo@33: 			fclose(fptr);
meillo@33: 			if (strlen(buf) == 0) {
meillo@33: 				logwrite(LOG_ALERT, "only whitespace connection name in %s\n", conf.online_file);
meillo@33: 				return NULL;
meillo@33: 			}
meillo@33: 			return g_strdup(buf);
meillo@33: 		} else if (errno == ENOENT) {
meillo@33: 			logwrite(LOG_NOTICE, "not online.\n");
meillo@33: 			return NULL;
meillo@10: 		} else {
meillo@33: 			logwrite(LOG_ALERT, "stat of %s failed: %s", conf.online_file, strerror(errno));
meillo@33: 			return NULL;
meillo@10: 		}
meillo@33: 
meillo@33: #ifdef ENABLE_MSERVER
meillo@33: 	} else if (strcmp(conf.online_detect, "mserver") == 0) {
meillo@33: 		DEBUG(3) debugf("connection method 'mserver'\n");
meillo@33: 		return mserver_detect_online(conf.mserver_iface);
meillo@33: #endif
meillo@33: 	} else if (strcmp(conf.online_detect, "pipe") == 0) {
meillo@33: 		DEBUG(3) debugf("connection method 'pipe'\n");
meillo@33: 		if (conf.online_pipe)
meillo@33: 			return detect_online_pipe(conf.online_pipe);
meillo@33: 		else {
meillo@33: 			logwrite(LOG_ALERT, "online detection mode is 'pipe', but online_pipe is undefined\n");
meillo@33: 			return NULL;
meillo@33: 		}
meillo@33: 	} else if (strcmp(conf.online_detect, "argument") == 0) {
meillo@33: 		return connection_name;
meillo@33: 	} else {
meillo@33: 		DEBUG(3) debugf("no connection method selected\n");
meillo@0: 	}
meillo@33: 
meillo@0: 	return NULL;
meillo@0: }