-/*
- script.c -- call an external script
- Copyright (C) 1999-2005 Ivo Timmermans,
- 2000-2013 Guus Sliepen <guus@tinc-vpn.org>
-
- 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.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-*/
-
-#include "system.h"
-
-#include "conf.h"
-#include "logger.h"
-#include "names.h"
-#include "net.h"
-#include "script.h"
-#include "xalloc.h"
-
-bool execute_script(const char *name, char **envp) {
-#ifdef HAVE_SYSTEM
- char *scriptname;
- char *command;
-
- xasprintf(&scriptname, "%s" SLASH "%s%s", confbase, name, scriptextension);
-
- /* First check if there is a script */
-
-#ifdef HAVE_MINGW
- if(!*scriptextension) {
- const char *pathext = getenv("PATHEXT") ?: ".COM;.EXE;.BAT;.CMD";
- char fullname[strlen(scriptname) + strlen(pathext)];
- char *ext = fullname + strlen(scriptname);
- strcpy(fullname, scriptname);
-
- const char *p = pathext;
- bool found = false;
- while(p && *p) {
- const char *q = strchr(p, ';');
- if(q) {
- memcpy(ext, p, q - p);
- ext[q - p] = 0;
- *q++;
- } else {
- strcpy(ext, p);
- }
- if((found = !access(fullname, F_OK)))
- break;
- p = q;
- }
- if(!found) {
- free(scriptname);
- return true;
- }
- } else
-#endif
-
- if(access(scriptname, F_OK)) {
- free(scriptname);
- return true;
- }
-
- logger(DEBUG_STATUS, LOG_INFO, "Executing script %s", name);
-
-#ifdef HAVE_PUTENV
- /* Set environment */
-
- for(int i = 0; envp[i]; i++)
- putenv(envp[i]);
-#endif
-
- if(scriptinterpreter)
- xasprintf(&command, "%s \"%s\"", scriptinterpreter, scriptname);
- else
- xasprintf(&command, "\"%s\"", scriptname);
-
- int status = system(command);
-
- free(command);
- free(scriptname);
-
- /* Unset environment */
-
- for(int i = 0; envp[i]; i++) {
- char *e = strchr(envp[i], '=');
- if(e) {
- char p[e - envp[i] + 1];
- strncpy(p, envp[i], e - envp[i]);
- p[e - envp[i]] = '\0';
- putenv(p);
- }
- }
-
- if(status != -1) {
-#ifdef WEXITSTATUS
- if(WIFEXITED(status)) { /* Child exited by itself */
- if(WEXITSTATUS(status)) {
- logger(DEBUG_ALWAYS, LOG_ERR, "Script %s exited with non-zero status %d",
- name, WEXITSTATUS(status));
- return false;
- }
- } else if(WIFSIGNALED(status)) { /* Child was killed by a signal */
- logger(DEBUG_ALWAYS, LOG_ERR, "Script %s was killed by signal %d (%s)",
- name, WTERMSIG(status), strsignal(WTERMSIG(status)));
- return false;
- } else { /* Something strange happened */
- logger(DEBUG_ALWAYS, LOG_ERR, "Script %s terminated abnormally", name);
- return false;
- }
-#endif
- } else {
- logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "system", strerror(errno));
- return false;
- }
-#endif
- return true;
-}