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1 /* MasqMail
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2 Copyright (C) 1999-2001 Oliver Kurth
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3 Copyright (C) 2008, 2010 markus schnalke <meillo@marmaro.de>
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4
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5 This program is free software; you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation; either version 2 of the License, or
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8 (at your option) any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program; if not, write to the Free Software
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17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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18 */
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19
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20 #include <sys/wait.h>
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21
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22 #include "masqmail.h"
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23 #include "peopen.h"
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24
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25
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26 gchar*
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27 online_query()
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28 {
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29 gchar *pipe = conf.online_query;
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30 pid_t pid;
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31 void (*old_signal) (int);
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32 int status;
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33 FILE *in;
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34 gchar *name = NULL;
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35
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36 if (!conf.online_query) {
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37 return NULL;
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38 }
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39 DEBUG(3) debugf("online query `%s'\n", pipe);
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40
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41 old_signal = signal(SIGCHLD, SIG_DFL);
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42
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43 in = peopen(pipe, "r", environ, &pid);
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44 if (!in) {
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45 logwrite(LOG_ALERT, "could not open pipe '%s': %s\n", pipe, strerror(errno));
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46 signal(SIGCHLD, old_signal);
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47 return NULL;
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48 }
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49
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50 gchar output[256];
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51 if (fgets(output, 255, in)) {
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52 g_strchomp(g_strchug(output));
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53 if (strlen(output) == 0) {
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54 logwrite(LOG_ALERT, "only whitespace connection name\n");
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55 name = NULL;
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56 } else {
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57 name = g_strdup(output);
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58 }
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59 } else {
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60 logwrite(LOG_ALERT, "nothing read from pipe %s\n", pipe);
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61 name = NULL;
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62 }
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63 fclose(in);
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64 waitpid(pid, &status, 0);
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65 if (WEXITSTATUS(status) != 0) {
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66 g_free(name);
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67 name = NULL;
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68 }
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69
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70 signal(SIGCHLD, old_signal);
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71
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72 return name;
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73 }
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