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Diffstat (limited to 'trunk/apps/app_system.c')
| -rw-r--r-- | trunk/apps/app_system.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/trunk/apps/app_system.c b/trunk/apps/app_system.c new file mode 100644 index 000000000..1f39c5a4e --- /dev/null +++ b/trunk/apps/app_system.c @@ -0,0 +1,129 @@ +/* + * Asterisk -- An open source telephony toolkit. + * + * Copyright (C) 1999 - 2005, Digium, Inc. + * + * Mark Spencer <markster@digium.com> + * + * See http://www.asterisk.org for more information about + * the Asterisk project. Please do not directly contact + * any of the maintainers of this project for assistance; + * the project provides a web site, mailing lists and IRC + * channels for your use. + * + * This program is free software, distributed under the terms of + * the GNU General Public License Version 2. See the LICENSE file + * at the top of the source tree. + */ + +/*! \file + * + * \brief Execute arbitrary system commands + * + * \author Mark Spencer <markster@digium.com> + * + * \ingroup applications + */ + +#include "asterisk.h" + +ASTERISK_FILE_VERSION(__FILE__, "$Revision$") + +#include "asterisk/pbx.h" +#include "asterisk/module.h" +#include "asterisk/app.h" +#include "asterisk/channel.h" /* autoservice */ + +static char *app = "System"; + +static char *app2 = "TrySystem"; + +static char *synopsis = "Execute a system command"; + +static char *synopsis2 = "Try executing a system command"; + +static char *chanvar = "SYSTEMSTATUS"; + +static char *descrip = +" System(command): Executes a command by using system(). If the command\n" +"fails, the console should report a fallthrough. \n" +"Result of execution is returned in the SYSTEMSTATUS channel variable:\n" +" FAILURE Could not execute the specified command\n" +" SUCCESS Specified command successfully executed\n"; + +static char *descrip2 = +" TrySystem(command): Executes a command by using system().\n" +"on any situation.\n" +"Result of execution is returned in the SYSTEMSTATUS channel variable:\n" +" FAILURE Could not execute the specified command\n" +" SUCCESS Specified command successfully executed\n" +" APPERROR Specified command successfully executed, but returned error code\n"; + +static int system_exec_helper(struct ast_channel *chan, void *data, int failmode) +{ + int res = 0; + + if (ast_strlen_zero(data)) { + ast_log(LOG_WARNING, "System requires an argument(command)\n"); + pbx_builtin_setvar_helper(chan, chanvar, "FAILURE"); + return failmode; + } + + ast_autoservice_start(chan); + + /* Do our thing here */ + res = ast_safe_system((char *)data); + if ((res < 0) && (errno != ECHILD)) { + ast_log(LOG_WARNING, "Unable to execute '%s'\n", (char *)data); + pbx_builtin_setvar_helper(chan, chanvar, "FAILURE"); + res = failmode; + } else if (res == 127) { + ast_log(LOG_WARNING, "Unable to execute '%s'\n", (char *)data); + pbx_builtin_setvar_helper(chan, chanvar, "FAILURE"); + res = failmode; + } else { + if (res < 0) + res = 0; + if (res != 0) + pbx_builtin_setvar_helper(chan, chanvar, "APPERROR"); + else + pbx_builtin_setvar_helper(chan, chanvar, "SUCCESS"); + res = 0; + } + + ast_autoservice_stop(chan); + + return res; +} + +static int system_exec(struct ast_channel *chan, void *data) +{ + return system_exec_helper(chan, data, -1); +} + +static int trysystem_exec(struct ast_channel *chan, void *data) +{ + return system_exec_helper(chan, data, 0); +} + +static int unload_module(void) +{ + int res; + + res = ast_unregister_application(app); + res |= ast_unregister_application(app2); + + return res; +} + +static int load_module(void) +{ + int res; + + res = ast_register_application(app2, trysystem_exec, synopsis2, descrip2); + res |= ast_register_application(app, system_exec, synopsis, descrip); + + return res; +} + +AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Generic System() application"); |