--- gvpe/src/util.C 2003/04/02 05:15:00 1.6 +++ gvpe/src/util.C 2008/08/07 17:54:27 1.22 @@ -1,26 +1,40 @@ /* util.C -- process management and other utility functions + Copyright (C) 2003-2008 Marc Lehmann Some of these are taken from tinc, see the AUTHORS file. - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + This file is part of GVPE. + + GVPE is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by the + Free Software Foundation; either version 3 of the License, or (at your + option) any later version. + + This program is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General + Public License for more details. + + You should have received a copy of the GNU General Public License along + with this program; if not, see . + + Additional permission under GNU GPL version 3 section 7 + + If you modify this Program, or any covered work, by linking or + combining it with the OpenSSL project's OpenSSL library (or a modified + version of that library), containing parts covered by the terms of the + OpenSSL or SSLeay licenses, the licensors of this Program grant you + additional permission to convey the resulting work. Corresponding + Source for a non-source form of such a combination shall include the + source code for the parts of OpenSSL used as well as that of the + covered work. */ #include "config.h" #include +#include #include #include @@ -29,12 +43,8 @@ #include #include #include -#include -#include -#include - -#include +#include "netcompat.h" #include "gettext.h" #include "pidfile.h" @@ -50,16 +60,16 @@ { int pid; - pid = check_pid (pidfilename); + pid = check_pid (conf.pidfilename); if (pid) { - fprintf (stderr, _("A vped is already running with pid %d.\n"), pid); + fprintf (stderr, _("A gvpe daemon is already running with pid %d.\n"), pid); return 1; } /* if it's locked, write-protected, or whatever */ - if (!write_pid (pidfilename)) + if (!write_pid (conf.pidfilename)) return 1; return 0; @@ -70,11 +80,11 @@ { int pid; - pid = read_pid (pidfilename); + pid = read_pid (conf.pidfilename); if (!pid) { - fprintf (stderr, _("No other vped is running.\n")); + fprintf (stderr, _("No other gvpe daemon is running.\n")); return 1; } @@ -83,10 +93,10 @@ /* ESRCH is returned when no process with that pid is found */ if (kill (pid, signal) && errno == ESRCH) { - fprintf (stderr, _("The vped is no longer running. ")); + fprintf (stderr, _("The gvpe daemon is no longer running. ")); fprintf (stderr, _("Removing stale lock file.\n")); - remove_pid (pidfilename); + remove_pid (conf.pidfilename); } return 0; @@ -116,7 +126,7 @@ /* Now UPDATE the pid in the pidfile, because we changed it... */ - if (!write_pid (pidfilename)) + if (!write_pid (conf.pidfilename)) return -1; log_to (LOGTO_SYSLOG); @@ -124,38 +134,125 @@ else log_to (LOGTO_SYSLOG | LOGTO_STDERR); - slog (L_INFO, _("vped %s (%s %s) starting"), VERSION, __DATE__, __TIME__); + slog (L_INFO, _("gvpe daemon %s (%s %s) starting"), VERSION, __DATE__, __TIME__); return 0; } -void -make_names (void) +bool run_script (const run_script_cb &cb, bool wait) { - if (!pidfilename) - pidfilename = LOCALSTATEDIR "/run/vped.pid"; + if (wait) + signal (SIGCHLD, SIG_DFL); // this is extremely ugly, but I did not feel like implementing a complete wait() event logic. It's easier to write this long comment to make your editor happy. - if (!confbase) - asprintf (&confbase, "%s/vpe", CONFDIR); -} + int pid = fork (); -void run_script (const run_script_cb &cb, bool wait) -{ - int pid; - - if ((pid = fork ()) == 0) + if (pid == 0) { - char *filename; - asprintf (&filename, "%s/%s", confbase, cb()); - execl (filename, filename, (char *) 0); - exit (255); + execl ("/bin/sh", "/bin/sh", "-c", cb (), (char *) 0); + exit (EXIT_FAILURE); } else if (pid > 0) { if (wait) { - waitpid (pid, 0, 0); - /* TODO: check status */ + int status; + int res = waitpid (pid, &status, 0); + + signal (SIGCHLD, SIG_IGN); + + if (res < 0) + { + slog (L_WARN, _("waiting for an external command failed: %s."), + strerror (errno)); + return false; + } + else if (!WIFEXITED (status) || WEXITSTATUS (status) != EXIT_SUCCESS) + { + slog (L_WARN, _("external command returned with exit status %d (%04x)."), + WEXITSTATUS (status), status); + return false; + } } } + else + { + slog (L_ERR, _("unable to fork, exiting: %s"), strerror (errno)); + exit (EXIT_FAILURE); + } + + return true; } + +#if ENABLE_HTTP_PROXY +// works like strdup +u8 * +base64_encode (const u8 *data, unsigned int len) +{ + const static char base64[65] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; + + unsigned int t, i; + const u8 *end = data + len; + u8 *res = new u8 [4 * ((len + 2) / 3) + 1]; + u8 *out = res; + + while (data <= end - 3) + { + t = (((data[0] << 8) | data[1]) << 8) | data[2]; + data += 3; + + *out++ = base64[(t >> 18) & 0x3f]; + *out++ = base64[(t >> 12) & 0x3f]; + *out++ = base64[(t >> 6) & 0x3f]; + *out++ = base64[(t ) & 0x3f]; + } + + for (t = 0, i = 0; data < end; i++) + t = (t << 8) | *data++; + + switch (i) + { + case 2: + *out++ = base64[(t >> 10) & 0x3f]; + *out++ = base64[(t >> 4) & 0x3f]; + *out++ = base64[(t << 2) & 0x3f]; + *out++ = '='; + break; + case 1: + *out++ = base64[(t >> 2) & 0x3f]; + *out++ = base64[(t << 4) & 0x3f]; + *out++ = '='; + *out++ = '='; + break; + } + + *out++ = 0; + + return res; +} +#endif + +void +id2mac (unsigned int id, void *m) +{ + mac &p = *(mac *)m; + + if (id) + { + p[0] = 0xfe; + p[1] = 0xfd; + p[2] = 0x80; + p[3] = 0x00; + p[4] = id >> 8; + p[5] = id; + } + else + { + p[0] = 0xff; + p[1] = 0xff; + p[2] = 0xff; + p[3] = 0xff; + p[4] = 0xff; + p[5] = 0xff; + } +} +