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Copy pathshell.c
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152 lines (143 loc) · 4.3 KB
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/**
* @file
*
* @brief Source for shell plugin
*
* @copyright BSD License (see LICENSE.md or https://www.libelektra.org)
*
*/
#include "shell.h"
#include <errno.h>
#include <kdberrors.h>
#include <kdbhelper.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
static int executeCommand (const char * cmdline)
{
char * cmd[4];
cmd[0] = "/bin/sh";
cmd[1] = "-c";
cmd[2] = (char *) cmdline;
cmd[3] = NULL;
pid_t pid = fork ();
if (pid == 0)
{
return execv ("/bin/sh", cmd);
}
else if (pid > 0)
{
int status;
wait (&status);
return WEXITSTATUS (status);
}
else
{
return -1;
}
}
int elektraShellGet (Plugin * handle ELEKTRA_UNUSED, KeySet * returned, Key * parentKey)
{
if (!elektraStrCmp (keyName (parentKey), "system:/elektra/modules/shell"))
{
KeySet * contract =
ksNew (30, keyNew ("system:/elektra/modules/shell", KEY_VALUE, "shell plugin waits for your orders", KEY_END),
keyNew ("system:/elektra/modules/shell/exports", KEY_END),
keyNew ("system:/elektra/modules/shell/exports/get", KEY_FUNC, elektraShellGet, KEY_END),
keyNew ("system:/elektra/modules/shell/exports/commit", KEY_FUNC, elektraShellCommit, KEY_END),
keyNew ("system:/elektra/modules/shell/exports/error", KEY_FUNC, elektraShellError, KEY_END),
#include ELEKTRA_README
keyNew ("system:/elektra/modules/shell/infos/version", KEY_VALUE, PLUGINVERSION, KEY_END), KS_END);
ksAppend (returned, contract);
ksDel (contract);
return 1; // success
}
KeySet * config = elektraPluginGetConfig (handle);
Key * cmdKey = ksLookupByName (config, "/execute/get", KDB_O_NONE);
Key * expectedReturnKey = ksLookupByName (config, "/execute/get/return", KDB_O_NONE);
if (cmdKey == NULL)
return 1;
else
{
int retVal = executeCommand (keyString (cmdKey));
if (retVal == -1)
{
ELEKTRA_SET_RESOURCE_ERRORF (parentKey, "Launching childprocess failed. Reason: %s", strerror (errno));
return -1;
}
else if (expectedReturnKey)
{
if (atoi (keyString (expectedReturnKey)) != retVal)
{
ELEKTRA_SET_PLUGIN_MISBEHAVIOR_ERRORF (parentKey,
"Return value of '%s' doesn't match expected exit. Reason: %s",
keyString (cmdKey), keyString (expectedReturnKey));
return -1;
}
}
}
return 1; // success
}
int elektraShellCommit (Plugin * handle ELEKTRA_UNUSED, KeySet * returned ELEKTRA_UNUSED, Key * parentKey)
{
KeySet * config = elektraPluginGetConfig (handle);
Key * cmdKey = ksLookupByName (config, "/execute/set", KDB_O_NONE);
Key * expectedReturnKey = ksLookupByName (config, "/execute/set/return", KDB_O_NONE);
if (cmdKey == NULL)
return 1;
else
{
int retVal = executeCommand (keyString (cmdKey));
if (retVal == -1)
{
ELEKTRA_SET_RESOURCE_ERRORF (parentKey, "Launching childprocess failed. Reason: %s", strerror (errno));
return -1;
}
else if (expectedReturnKey)
{
if (atoi (keyString (expectedReturnKey)) != retVal)
{
ELEKTRA_SET_PLUGIN_MISBEHAVIOR_ERRORF (parentKey,
"Return value of '%s' doesn't match expected exit. Reason: %s",
keyString (cmdKey), keyString (expectedReturnKey));
return -1;
}
}
}
return 1; // success
}
int elektraShellError (Plugin * handle ELEKTRA_UNUSED, KeySet * returned ELEKTRA_UNUSED, Key * parentKey)
{
KeySet * config = elektraPluginGetConfig (handle);
Key * cmdKey = ksLookupByName (config, "/execute/error", KDB_O_NONE);
Key * expectedReturnKey = ksLookupByName (config, "/execute/error/return", KDB_O_NONE);
if (cmdKey == NULL)
return 1;
else
{
int retVal = executeCommand (keyString (cmdKey));
if (retVal == -1)
{
ELEKTRA_SET_RESOURCE_ERRORF (parentKey, "Launching childprocess failed. Reason: %s", strerror (errno));
return -1;
}
else if (expectedReturnKey)
{
if (atoi (keyString (expectedReturnKey)) != retVal)
{
ELEKTRA_SET_PLUGIN_MISBEHAVIOR_ERRORF (parentKey,
"Return value of '%s' doesn't match expected exit. Reason: %s",
keyString (cmdKey), keyString (expectedReturnKey));
return -1;
}
}
}
return 1; // success
}
Plugin * ELEKTRA_PLUGIN_EXPORT
{
return elektraPluginExport ("shell", ELEKTRA_PLUGIN_GET, &elektraShellGet, ELEKTRA_PLUGIN_COMMIT, &elektraShellCommit,
ELEKTRA_PLUGIN_ERROR, &elektraShellError, ELEKTRA_PLUGIN_END);
}