| 1 | /* |
1 | /* |
| 2 | util.C -- process management and other utility functions |
2 | util.C -- process management and other utility functions |
| 3 | Copyright (C) 2003 Marc Lehmann <pcg@goof.com> |
3 | Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de> |
| 4 | |
4 | |
| 5 | Some of these are taken from tinc, see the AUTHORS file. |
5 | Some of these are taken from tinc, see the AUTHORS file. |
| 6 | |
6 | |
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7 | This file is part of GVPE. |
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8 | |
| 7 | This program is free software; you can redistribute it and/or modify |
9 | GVPE is free software; you can redistribute it and/or modify it |
| 8 | it under the terms of the GNU General Public License as published by |
10 | under the terms of the GNU General Public License as published by the |
| 9 | the Free Software Foundation; either version 2 of the License, or |
11 | Free Software Foundation; either version 3 of the License, or (at your |
| 10 | (at your option) any later version. |
12 | option) any later version. |
| 11 | |
13 | |
| 12 | This program is distributed in the hope that it will be useful, |
14 | This program is distributed in the hope that it will be useful, but |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
| 15 | GNU General Public License for more details. |
17 | Public License for more details. |
| 16 | |
18 | |
| 17 | You should have received a copy of the GNU General Public License |
19 | You should have received a copy of the GNU General Public License along |
| 18 | along with this program; if not, write to the Free Software |
20 | with this program; if not, see <http://www.gnu.org/licenses/>. |
| 19 | Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
21 | |
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22 | Additional permission under GNU GPL version 3 section 7 |
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23 | |
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24 | If you modify this Program, or any covered work, by linking or |
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25 | combining it with the OpenSSL project's OpenSSL library (or a modified |
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26 | version of that library), containing parts covered by the terms of the |
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27 | OpenSSL or SSLeay licenses, the licensors of this Program grant you |
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28 | additional permission to convey the resulting work. Corresponding |
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29 | Source for a non-source form of such a combination shall include the |
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30 | source code for the parts of OpenSSL used as well as that of the |
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31 | covered work. |
| 20 | */ |
32 | */ |
| 21 | |
33 | |
| 22 | #include "config.h" |
34 | #include "config.h" |
| 23 | |
35 | |
| 24 | #include <cstdio> |
36 | #include <cstdio> |
| … | |
… | |
| 50 | |
62 | |
| 51 | pid = check_pid (conf.pidfilename); |
63 | pid = check_pid (conf.pidfilename); |
| 52 | |
64 | |
| 53 | if (pid) |
65 | if (pid) |
| 54 | { |
66 | { |
| 55 | fprintf (stderr, _("A vped is already running with pid %d.\n"), pid); |
67 | fprintf (stderr, _("A gvpe daemon is already running with pid %d.\n"), pid); |
| 56 | return 1; |
68 | return 1; |
| 57 | } |
69 | } |
| 58 | |
70 | |
| 59 | /* if it's locked, write-protected, or whatever */ |
71 | /* if it's locked, write-protected, or whatever */ |
| 60 | if (!write_pid (conf.pidfilename)) |
72 | if (!write_pid (conf.pidfilename)) |
| … | |
… | |
| 70 | |
82 | |
| 71 | pid = read_pid (conf.pidfilename); |
83 | pid = read_pid (conf.pidfilename); |
| 72 | |
84 | |
| 73 | if (!pid) |
85 | if (!pid) |
| 74 | { |
86 | { |
| 75 | fprintf (stderr, _("No other vped is running.\n")); |
87 | fprintf (stderr, _("No other gvpe daemon is running.\n")); |
| 76 | return 1; |
88 | return 1; |
| 77 | } |
89 | } |
| 78 | |
90 | |
| 79 | errno = 0; /* No error, sometimes errno is only changed on error */ |
91 | errno = 0; /* No error, sometimes errno is only changed on error */ |
| 80 | |
92 | |
| 81 | /* ESRCH is returned when no process with that pid is found */ |
93 | /* ESRCH is returned when no process with that pid is found */ |
| 82 | if (kill (pid, signal) && errno == ESRCH) |
94 | if (kill (pid, signal) && errno == ESRCH) |
| 83 | { |
95 | { |
| 84 | fprintf (stderr, _("The vped is no longer running. ")); |
96 | fprintf (stderr, _("The gvpe daemon is no longer running. ")); |
| 85 | |
97 | |
| 86 | fprintf (stderr, _("Removing stale lock file.\n")); |
98 | fprintf (stderr, _("Removing stale lock file.\n")); |
| 87 | remove_pid (conf.pidfilename); |
99 | remove_pid (conf.pidfilename); |
| 88 | } |
100 | } |
| 89 | |
101 | |
| … | |
… | |
| 120 | log_to (LOGTO_SYSLOG); |
132 | log_to (LOGTO_SYSLOG); |
| 121 | } |
133 | } |
| 122 | else |
134 | else |
| 123 | log_to (LOGTO_SYSLOG | LOGTO_STDERR); |
135 | log_to (LOGTO_SYSLOG | LOGTO_STDERR); |
| 124 | |
136 | |
| 125 | slog (L_INFO, _("vped %s (%s %s) starting"), VERSION, __DATE__, __TIME__); |
137 | slog (L_INFO, _("gvpe daemon %s (%s %s) starting"), VERSION, __DATE__, __TIME__); |
| 126 | |
138 | |
| 127 | return 0; |
139 | return 0; |
| 128 | } |
140 | } |
| 129 | |
141 | |
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142 | pid_t |
| 130 | void run_script (const run_script_cb &cb, bool wait) |
143 | run_script (const run_script_cb &cb, bool wait) |
| 131 | { |
144 | { |
| 132 | int pid; |
145 | sigset_t oldset; |
| 133 | |
146 | |
| 134 | if ((pid = fork ()) == 0) |
147 | if (wait) |
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148 | { |
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149 | sigset_t sigchld; |
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150 | sigemptyset (&sigchld); |
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151 | sigaddset (&sigchld, SIGCHLD); |
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152 | sigprocmask (SIG_BLOCK, &sigchld, &oldset); |
| 135 | { |
153 | } |
| 136 | char *filename; |
154 | |
| 137 | asprintf (&filename, "%s/%s", confbase, cb()); |
155 | pid_t pid = fork (); |
| 138 | execl (filename, filename, (char *) 0); |
156 | |
| 139 | exit (126); |
157 | if (pid == 0) |
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158 | { |
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159 | sigprocmask (SIG_SETMASK, &oldset, 0); |
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160 | |
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161 | execl ("/bin/sh", "/bin/sh", "-c", cb (), (char *) 0); |
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162 | exit (EXIT_FAILURE); |
| 140 | } |
163 | } |
| 141 | else if (pid > 0) |
164 | else if (pid > 0) |
| 142 | { |
165 | { |
| 143 | if (wait) |
166 | if (wait) |
| 144 | { |
167 | { |
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168 | int status; |
| 145 | waitpid (pid, 0, 0); |
169 | int res = waitpid (pid, &status, 0); |
| 146 | /* TODO: check status */ |
170 | |
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171 | sigprocmask (SIG_SETMASK, &oldset, 0); |
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172 | |
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173 | if (res < 0) |
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174 | { |
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175 | slog (L_WARN, _("waiting for an external command failed: %s."), |
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176 | strerror (errno)); |
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177 | return 0; |
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178 | } |
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179 | else if (!WIFEXITED (status) || WEXITSTATUS (status) != EXIT_SUCCESS) |
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180 | { |
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181 | slog (L_WARN, _("external command returned with exit status %d (%04x)."), |
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182 | WEXITSTATUS (status), status); |
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183 | return 0; |
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184 | } |
| 147 | } |
185 | } |
| 148 | } |
186 | } |
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187 | else |
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188 | { |
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189 | slog (L_ERR, _("unable to fork, exiting: %s"), strerror (errno)); |
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190 | exit (EXIT_FAILURE); |
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191 | } |
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192 | |
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193 | return pid; |
| 149 | } |
194 | } |
| 150 | |
195 | |
| 151 | #if ENABLE_HTTP_PROXY |
196 | #if ENABLE_HTTP_PROXY |
| 152 | // works like strdup |
197 | // works like strdup |
| 153 | u8 * |
198 | u8 * |
