1 /*

2 ** MasqMail

3 ** Copyright (C) 1999-2001 Oliver Kurth

4 ** Copyright (C) 2008, 2010 markus schnalke <meillo@marmaro.de>

5 **

6 ** This program is free software; you can redistribute it and/or modify

7 ** it under the terms of the GNU General Public License as published by

8 ** the Free Software Foundation; either version 2 of the License, or

9 ** (at your option) any later version.

10 **

11 ** This program is distributed in the hope that it will be useful,

12 ** but WITHOUT ANY WARRANTY; without even the implied warranty of

13 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

14 ** GNU General Public License for more details.

15 **

16 ** You should have received a copy of the GNU General Public License

17 ** along with this program; if not, write to the Free Software

18 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

19 */

20

21 #include <sys/wait.h>

22

23 #include "masqmail.h"

24 #include "peopen.h"

25

26

27 gchar*

28 online_query()

29 {

30 gchar *pipe = conf.online_query;

31 pid_t pid;

32 void (*old_signal) (int);

33 int status;

34 FILE *in;

35 gchar *name = NULL;

36

37 if (!conf.online_query) {

38 return NULL;

39 }

40 DEBUG(3) debugf("online query `%s'\n", pipe);

41

42 old_signal = signal(SIGCHLD, SIG_DFL);

43

44 in = peopen(pipe, "r", environ, &pid);

45 if (!in) {

46 logwrite(LOG_ALERT, "could not open pipe '%s': %s\n", pipe, strerror(errno));

47 signal(SIGCHLD, old_signal);

48 return NULL;

49 }

50

51 gchar output[256];

52 if (fgets(output, 255, in)) {

53 g_strchomp(g_strchug(output));

54 if (strlen(output) == 0) {

55 logwrite(LOG_ALERT, "only whitespace connection name\n");

56 name = NULL;

57 } else {

58 name = g_strdup(output);

59 }

60 } else {

61 logwrite(LOG_ALERT, "nothing read from pipe %s\n", pipe);

62 name = NULL;

63 }

64 fclose(in);

65 waitpid(pid, &status, 0);

66 if (WEXITSTATUS(status) != 0) {

67 g_free(name);

68 name = NULL;

69 }

70

71 signal(SIGCHLD, old_signal);

72

73 return name;

74 }