X-Git-Url: http://tinc-vpn.org/git/browse?a=blobdiff_plain;ds=sidebyside;f=src%2Fscript.c;fp=src%2Fscript.c;h=9a43d53188a6b0149d492aa35e37043edc375771;hb=57991e264202ad83e2c1b663777b358bf5573652;hp=0000000000000000000000000000000000000000;hpb=21184674b38ea1da87588de97dab076c9b9e4a81;p=tinc

diff --git a/src/script.c b/src/script.c
new file mode 100644
index 00000000..9a43d531
--- /dev/null
+++ b/src/script.c
@@ -0,0 +1,126 @@
+/*
+    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 "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;
+}