Typo: forgot clixon_util_dispatcher.c

util/clixon_util_dispatcher.c

@@ -0,0 +1,190 @@
+/*
+ *
+  ***** BEGIN LICENSE BLOCK *****
+ 
+  Copyright (C) 2021 Olof Hagsand and Rubicon Communications, LLC(Netgate)
+
+  This file is part of CLIXON.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+
+  Alternatively, the contents of this file may be used under the terms of
+  the GNU General Public License Version 3 or later (the "GPL"),
+  in which case the provisions of the GPL are applicable instead
+  of those above. If you wish to allow use of your version of this file only
+  under the terms of the GPL, and not to allow others to
+  use your version of this file under the terms of Apache License version 2, 
+  indicate your decision by deleting the provisions above and replace them with
+  the  notice and other provisions required by the GPL. If you do not delete
+  the provisions above, a recipient may use your version of this file under
+  the terms of any one of the Apache License version 2 or the GPL.
+
+  ***** END LICENSE BLOCK *****
+
+* Utility for testing path dispatcher
+* Everything is run by options and order is significant which makes it a little special.
+* For example:
+* clixon_util_dispatcher -r -c / : 
+*      Register cb1 with default path "/" and arg NULL, call with path /
+* clixon_util_dispatcher -i 2 -p /foo -a bar -r -c /bar -c /fie
+*      Register cb2 with path "/foo" and arg bar, call with path /bar then /fie
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "clixon_config.h" /* generated by config & autoconf */
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <limits.h>
+#include <stdint.h>
+#include <syslog.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+
+/* cligen */
+#include <cligen/cligen.h>
+
+/* clixon */
+#include "clixon/clixon.h"
+#include "clixon/clixon_backend.h"
+
+/* Command line options to be passed to getopt(3) */
+#define DISPATCHER_OPTS "hD:a:i:p:rc:"
+
+static int
+usage(char *argv0)
+{
+    fprintf(stderr, "usage:%s [options]\n"
+	    "where options are\n"
+            "\t-h \t\tHelp\n"
+    	    "\t-D <level> \t Debug - print dispatch tree\n"
+	    "\t-a <string>\t Argument to callback (default: NULL)\n"
+	    "\t-i <int>   \t Function index: 1..3 (default: 1)\n"
+	    "\t-p <path>  \t Registered path (default: /)\n"
+	    "\t-r         \t Register callback (based on -a/-i/-p setting)\n"
+	    "\t-c <path>  \t Call dispatcher with path\n",
+	    argv0
+	    );
+    exit(0);
+}
+
+/*! Function to handle a path
+ *
+ * @param[in]  h        Generic handler
+ * @param[in]  xpath    Registered XPath using canonical prefixes
+ * @param[in]  userargs Per-call user arguments
+ * @param[in]  arg      Per-path user argument
+ *(
+/ * Make a CB() macro to generate simple callbacks that just prints the path and arg
+ */
+#define CB(i) static int cb##i(void *h0, char *xpath, void *userargs, void *arg)    {  fprintf(stdout, "%s %s\n", __FUNCTION__, (char*)arg); return 0; }
+
+CB(1)
+CB(2)
+
+int
+main(int    argc,
+     char **argv)
+{
+    int                 retval = -1;
+    char               *argv0 = argv[0];
+    int                 logdst = CLICON_LOG_STDERR;
+    int                 dbg = 0;
+    int                 c;
+    char               *arg = NULL;
+    handler_function    fn = cb1;
+    dispatcher_entry_t *htable = NULL;
+    int                 ret;
+    char               *regpath = "/"; /* Register path */
+    
+    /* In the startup, logs to stderr & debug flag set later */
+    clicon_log_init("dispatcher", LOG_DEBUG, logdst); 
+    
+    optind = 1;
+    opterr = 0;
+    while ((c = getopt(argc, argv, DISPATCHER_OPTS)) != -1)
+	switch (c) {
+	case 'h':
+	    usage(argv0);
+	    break;
+    	case 'D':
+	    if (sscanf(optarg, "%d", &dbg) != 1)
+		usage(argv0);
+	    break;
+
+	case 'a' :
+	case 'i' :
+	case 'p' :
+	case 'r' :
+	case 'c' :
+	    break;
+	default:
+	    usage(argv[0]);
+	    break;
+	}
+    /* 
+     * Logs, error and debug to stderr or syslog, set debug level
+     */
+    clicon_log_init("xpath", dbg?LOG_DEBUG:LOG_INFO, logdst);
+    
+    clicon_debug_init(dbg, NULL);
+	    
+    /* Now rest of options */   
+    opterr = 0;
+    optind = 1;
+    while ((c = getopt(argc, argv, DISPATCHER_OPTS)) != -1){
+	switch (c) {
+	case 'D' : /* debug */
+	    break; /* see above */
+	case 'a' : /* arg string */
+	    arg = optarg;
+	    break;
+	case 'i' : /* dispatcher function: 1..3 */
+	    switch (atoi(optarg)){
+	    case 1: fn = cb1; break;
+	    case 2: fn = cb2; break;
+		//	    case 3: fn = cb3; break;
+	    }
+	    break;
+	case 'p' : /* register path */
+	    regpath = optarg;
+	    break;
+	case 'r' :{ /* register callback based on -a/-i/-p*/
+	    dispatcher_definition     x = {regpath, fn, arg};
+	    if (dispatcher_register_handler(&htable, &x) < 0)
+		goto done;	    
+	    break;
+	}
+	case 'c':{ /* Execute a call using path */
+	    char *path = optarg;
+	    if ((ret = dispatcher_call_handlers(htable, NULL, path, NULL)) < 0)
+		goto done;
+	    fprintf(stderr, "path:%s ret:%d\n", path, ret);
+	    break;
+	}
+	default:
+	    usage(argv[0]);
+	    break;
+	}
+    }
+    if (dbg)
+	dispatcher_print(stderr, 0, htable);
+    dispatcher_free(htable);
+    retval = 0;
+ done:
+    return retval;
+}