1 files changed, 111 insertions, 0 deletions
diff --git a/plugin_button_exec.c b/plugin_button_exec.c
new file mode 100644
index 0000000..41e5d7e
--- /dev/null
+++ b/plugin_button_exec.c
@@ -0,0 +1,111 @@
+/* $Id: plugin_button_exec.c 1136 2010-11-28 16:07:16Z mzuther $
+ * $URL: https://ssl.bulix.org/svn/lcd4linux/trunk/plugin_button_exec.c $
+ *
+ * plugin that forks and exec's once a key is pressed. the difference to the exec plugin is: this can also only be done once!
+ *
+ * Copyright (C) 2008, Wolfgang Henerbichler <wogri@wogri.com>
+ *
+ * This file is part of LCD4Linux.
+ *
+ * LCD4Linux 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, or (at your option)
+ * any later version.
+ *
+ * LCD4Linux 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+/* 
+ * exported functions:
+ *
+ * int plugin_init_button_exec(void)
+ *  adds various functions
+ *
+ */
+
+
+/* define the include files you need */
+#include "config.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <signal.h>
+#include <errno.h>
+
+/* these should always be included */
+#include "debug.h"
+#include "plugin.h"
+
+#ifdef WITH_DMALLOC
+#include <dmalloc.h>
+#endif
+
+
+
+/* sample function 'button_exec' */
+/* takes as many arguments as you want, first arguemnt is the command that will be called via exec, all the following are parameters you want to add to your command - you won't know what has happened after forking - no return codes available */
+/* Note: all local functions should be declared 'static' */
+
+static void my_button_exec(RESULT * result, int argc, RESULT * argv[])
+{
+    int pid;
+    int i;
+    int errsv;
+    char *args[argc + 1];
+    char *arg;
+    char *prog;
+
+    signal(SIGCHLD, SIG_IGN);
+    prog = R2S(argv[0]);
+    info(prog);
+    for (i = 1; i < argc; i++) {
+	arg = R2S(argv[i]);
+	args[i] = arg;
+	info(arg);
+    }
+    args[0] = prog;
+    args[i] = (char *) 0;
+    pid = fork();
+    if (pid == 0) {		/* child-process */
+	/* char *args[] = {"-r", "-t", "-l", (char *) 0 }; */
+	info("executing program");
+	execvp(prog, args);
+	errsv = errno;
+	info("executing program failed");
+	info(strerror(errsv));
+	exit(0);
+    } else if (pid == -1) {
+	info("weird error has occurred. couldn't fork.");
+    } else {
+	SetResult(&result, R_STRING, "0");
+    }
+}
+
+
+/* plugin initialization */
+/* MUST NOT be declared 'static'! */
+int plugin_init_button_exec(void)
+{
+
+    /* register all our cool functions */
+    /* the second parameter is the number of arguments */
+    /* -1 stands for variable argument list */
+    AddFunction("button_exec", -1, my_button_exec);
+    return 0;
+}
+
+void plugin_exit_button_exec(void)
+{
+    /* free any allocated memory */
+    /* close filedescriptors */
+}