*/
#include <stdio.h>
+#include <stdlib.h>
#include <stdbool.h>
#include <ctype.h>
+#include <getopt.h>
+#include <string.h>
#include <vlib/vlib.h>
#include <vlibapi/api_types.h>
+#include <vppinfra/hash.h>
#include <vppinfra/cJSON.h>
/* VPP API client includes */
#include <limits.h>
#include "vat2.h"
+/*
+ * Filter these messages as they are used to manage the API connection to VPP
+ */
+char *filter_messages_strings[] = { "memclnt_create",
+ "memclnt_delete",
+ "sockclnt_create",
+ "sockclnt_delete",
+ "memclnt_rx_thread_suspend",
+ "memclnt_read_timeout",
+ "rx_thread_exit",
+ "trace_plugin_msg_ids",
+ 0 };
+
+static bool
+filter_message (char *msgname)
+{
+ char **p = filter_messages_strings;
+
+ while (*p)
+ {
+ if (strcmp (*p, msgname) == 0)
+ return true;
+ p++;
+ }
+ return false;
+}
+
uword *function_by_name;
bool debug = false;
return rv;
}
+struct apifuncs_s
+{
+ cJSON (*f) (cJSON *);
+ cJSON (*tojson) (void *);
+ u32 crc;
+};
+
+struct apifuncs_s *apifuncs = 0;
+
void
-vat2_register_function(char *name, cJSON (*f)(cJSON *))
+vat2_register_function (char *name, cJSON (*f) (cJSON *),
+ cJSON (*tojson) (void *), u32 crc)
+{
+ struct apifuncs_s funcs = { .f = f, .tojson = tojson, .crc = crc };
+ vec_add1 (apifuncs, funcs);
+ hash_set_mem (function_by_name, name, vec_len (apifuncs) - 1);
+}
+
+static int
+vat2_exec_command_by_name (char *msgname, cJSON *o)
+{
+ if (filter_message (msgname))
+ return 0;
+
+ cJSON *crc_obj = cJSON_GetObjectItem (o, "_crc");
+ if (!crc_obj)
+ {
+ fprintf (stderr, "Missing '_crc' element!\n");
+ return -1;
+ }
+ char *crc_str = cJSON_GetStringValue (crc_obj);
+ u32 crc = (u32) strtol (crc_str, NULL, 16);
+
+ uword *p = hash_get_mem (function_by_name, msgname);
+ if (!p)
+ {
+ fprintf (stderr, "No such command %s\n", msgname);
+ return -1;
+ }
+ if (crc != apifuncs[p[0]].crc)
+ {
+ fprintf (stderr, "API CRC does not match: %s!\n", msgname);
+ }
+
+ cJSON *(*fp) (cJSON *);
+ fp = (void *) apifuncs[p[0]].f;
+ cJSON *r = (*fp) (o);
+
+ if (r)
+ {
+ char *output = cJSON_Print (r);
+ cJSON_Delete (r);
+ printf ("%s\n", output);
+ free (output);
+ }
+ else
+ {
+ fprintf (stderr, "Call failed: %s\n", msgname);
+ return -1;
+ }
+ return 0;
+}
+
+static int
+vat2_exec_command (cJSON *o)
+{
+
+ cJSON *msg_id_obj = cJSON_GetObjectItem (o, "_msgname");
+ if (!msg_id_obj)
+ {
+ fprintf (stderr, "Missing '_msgname' element!\n");
+ return -1;
+ }
+
+ char *name = cJSON_GetStringValue (msg_id_obj);
+
+ return vat2_exec_command_by_name (name, o);
+}
+
+static void
+print_template (char *msgname)
+{
+ uword *p = hash_get_mem (function_by_name, msgname);
+ if (!p)
+ goto error;
+
+ cJSON *(*fp) (void *);
+ fp = (void *) apifuncs[p[0]].tojson;
+ if (!fp)
+ goto error;
+
+ void *scratch = malloc (2048);
+ if (!scratch)
+ goto error;
+
+ memset (scratch, 0, 2048);
+ cJSON *t = fp (scratch);
+ if (!t)
+ goto error;
+ free (scratch);
+ char *output = cJSON_Print (t);
+ if (!output)
+ goto error;
+
+ cJSON_Delete (t);
+ printf ("%s\n", output);
+ free (output);
+
+ return;
+
+error:
+ fprintf (stderr, "error printing template for: %s\n", msgname);
+}
+
+static void
+dump_apis (void)
{
- hash_set_mem(function_by_name, name, f);
+ char *name;
+ u32 *i;
+ hash_foreach_mem (name, i, function_by_name, ({ printf ("%s\n", name); }));
+}
+
+static void
+print_help (void)
+{
+ char *help_string =
+ "Usage: vat2 [OPTION] <message-name> <JSON object>\n"
+ "Send API message to VPP and print reply\n"
+ "\n"
+ "-d, --debug Print additional information\n"
+ "-p, --prefix Specify shared memory prefix to connect to a given VPP "
+ "instance\n"
+ "-f, --file File containing a JSON object with the arguments for "
+ "the message to send\n"
+ "--dump-apis List all APIs available in VAT2 (might not reflect "
+ "running VPP)\n"
+ "-t, --template Print a template JSON object for given API message\n"
+ "\n";
+ printf ("%s", help_string);
}
int main (int argc, char **argv)
{
/* Create a heap of 64MB */
clib_mem_init (0, 64 << 20);
- char *filename = 0;
+ char *filename = 0, *prefix = 0;
int index;
int c;
opterr = 0;
cJSON *o = 0;
- uword *p = 0;
-
- while ((c = getopt (argc, argv, "df:")) != -1) {
- switch (c) {
- case 'd':
- debug = true;
- break;
- case 'f':
- filename = optarg;
- break;
- case '?':
- if (optopt == 'f')
- fprintf (stderr, "Option -%c requires an argument.\n", optopt);
- else if (isprint (optopt))
- fprintf (stderr, "Unknown option `-%c'.\n", optopt);
- else
- fprintf (stderr,
- "Unknown option character `\\x%x'.\n",
- optopt);
- return 1;
- default:
- abort ();
+ int option_index = 0;
+ bool dump_api = false;
+ bool template = false;
+ char *msgname = 0;
+ static int debug_flag;
+ static struct option long_options[] = {
+ { "debug", no_argument, &debug_flag, 1 },
+ { "prefix", optional_argument, 0, 'p' },
+ { "file", required_argument, 0, 'f' },
+ { "dump-apis", no_argument, 0, 0 },
+ { "template", no_argument, 0, 't' },
+ { 0, 0, 0, 0 }
+ };
+
+ while ((c = getopt_long (argc, argv, "hdp:f:", long_options,
+ &option_index)) != -1)
+ {
+ switch (c)
+ {
+ case 0:
+ if (option_index == 3)
+ dump_api = true;
+ break;
+ case 'd':
+ debug = true;
+ break;
+ case 't':
+ template = true;
+ break;
+ case 'p':
+ prefix = optarg;
+ break;
+ case 'f':
+ filename = optarg;
+ break;
+ case '?':
+ print_help ();
+ return 1;
+ default:
+ abort ();
+ }
}
- }
-
- DBG("debug = %d, filename = %s\n", debug, filename);
+ debug = debug_flag == 1 ? true : false;
+ DBG ("debug = %d, filename = %s shared memory prefix: %s\n", debug, filename,
+ prefix);
for (index = optind; index < argc; index++)
DBG ("Non-option argument %s\n", argv[index]);
index = optind;
+ if (argc > index + 2)
+ {
+ fprintf (stderr, "%s: Too many arguments\n", argv[0]);
+ exit (-1);
+ }
+
/* Load plugins */
function_by_name = hash_create_string (0, sizeof (uword));
int res = register_function();
exit(-1);
}
- if (argc > index + 2) {
- fprintf(stderr, "%s: Too many arguments\n", argv[0]);
- exit(-1);
- }
+ if (template)
+ {
+ print_template (argv[index]);
+ exit (0);
+ }
- /* Read JSON from stdin, command line or file */
- if (argc >= (index + 1)) {
- p = hash_get_mem (function_by_name, argv[index]);
- if (p == 0) {
- fprintf(stderr, "%s: Unknown command: %s\n", argv[0], argv[index]);
- exit(-1);
+ if (dump_api)
+ {
+ dump_apis ();
+ exit (0);
}
- }
+ /* Read message arguments from command line */
+ if (argc >= (index + 1))
+ {
+ msgname = argv[index];
+ }
if (argc == (index + 2)) {
o = cJSON_Parse(argv[index+1]);
if (!o) {
}
}
- if (filename) {
- if (argc > index + 1) {
- fprintf(stderr, "%s: Superfluous arguments when filename given\n", argv[0]);
- exit(-1);
+ if (!msgname && !filename)
+ {
+ print_help ();
+ exit (-1);
}
+ /* Read message from file */
+ if (filename) {
+ if (argc > index)
+ {
+ fprintf (stderr, "%s: Superfluous arguments when filename given\n",
+ argv[0]);
+ exit (-1);
+ }
+
FILE *f = fopen(filename, "r");
- size_t bufsize = 1024;
+ size_t chunksize, bufsize;
size_t n_read = 0;
size_t n;
fprintf(stderr, "%s: can't open file: %s\n", argv[0], filename);
exit(-1);
}
+
+ chunksize = bufsize = 1024;
char *buf = malloc(bufsize);
- while ((n = fread(buf, 1, bufsize, f))) {
- n_read += n;
- if (n == bufsize)
- buf = realloc(buf, bufsize);
- }
+ while ((n = fread (buf + n_read, 1, chunksize, f)))
+ {
+ n_read += n;
+ if (n == chunksize)
+ {
+ bufsize += chunksize;
+ buf = realloc (buf, bufsize);
+ }
+ }
fclose(f);
if (n_read) {
o = cJSON_Parse(buf);
- free(buf);
if (!o) {
fprintf(stderr, "%s: Failed parsing JSON input: %s\n", argv[0], cJSON_GetErrorPtr());
exit(-1);
}
}
+ free (buf);
}
- if (!o) {
- fprintf(stderr, "%s: Failed parsing JSON input\n", argv[0]);
- exit(-1);
- }
-
- if (vac_connect("vat2", 0, 0, 1024)) {
- fprintf(stderr, "Failed connecting to VPP\n");
- exit(-1);
- }
- if (!p) {
- fprintf(stderr, "No such command\n");
- exit(-1);
- }
-
- cJSON * (*fp) (cJSON *);
- fp = (void *) p[0];
- cJSON *r = (*fp) (o);
-
- if (o)
- cJSON_Delete(o);
+ if (!o)
+ {
+ fprintf (stderr, "%s: Failed parsing JSON input\n", argv[0]);
+ exit (-1);
+ }
- if (r) {
- char *output = cJSON_Print(r);
- cJSON_Delete(r);
- printf("%s\n", output);
- free(output);
- } else {
- fprintf(stderr, "Call failed\n");
- exit(-1);
- }
+ if (vac_connect ("vat2", prefix, 0, 1024))
+ {
+ fprintf (stderr, "Failed connecting to VPP\n");
+ exit (-1);
+ }
+ if (msgname)
+ {
+ vat2_exec_command_by_name (msgname, o);
+ }
+ else
+ {
+ if (cJSON_IsArray (o))
+ {
+ size_t size = cJSON_GetArraySize (o);
+ for (int i = 0; i < size; i++)
+ vat2_exec_command (cJSON_GetArrayItem (o, i));
+ }
+ }
+ cJSON_Delete (o);
vac_disconnect();
exit (0);
Code Review / vpp.git / blobdiff