-/*
- * Copyright (C) 2015, 2016 "IoT.bzh"
+/*
+ * Copyright (C) 2015-2018 "IoT.bzh"
* Author "Fulup Ar Foll"
* Author José Bollo <jose.bollo@iot.bzh>
*
#include <errno.h>
#include <systemd/sd-event.h>
+#include <json-c/json.h>
-#include "afb-common.h" /* TODO: remove dependency to afb-common.h */
#include "afb-wsj1.h"
#include "afb-ws-client.h"
+#include "afb-proto-ws.h"
+
+/* declaration of functions */
+static void on_wsj1_hangup(void *closure, struct afb_wsj1 *wsj1);
+static void on_wsj1_call(void *closure, const char *api, const char *verb, struct afb_wsj1_msg *msg);
+static void on_wsj1_event(void *closure, const char *event, struct afb_wsj1_msg *msg);
+
+static void on_pws_hangup(void *closure);
+static void on_pws_reply_success(void *closure, void *request, struct json_object *result, const char *info);
+static void on_pws_reply_fail(void *closure, void *request, const char *status, const char *info);
+static void on_pws_event_create(void *closure, const char *event_name, int event_id);
+static void on_pws_event_remove(void *closure, const char *event_name, int event_id);
+static void on_pws_event_subscribe(void *closure, void *request, const char *event_name, int event_id);
+static void on_pws_event_unsubscribe(void *closure, void *request, const char *event_name, int event_id);
+static void on_pws_event_push(void *closure, const char *event_name, int event_id, struct json_object *data);
+static void on_pws_event_broadcast(void *closure, const char *event_name, struct json_object *data);
+static void on_pws_subcall(void *closure, struct afb_proto_ws_subcall *subcall, void *request, const char *api, const char *verb, struct json_object *args);
-static void on_hangup(void *closure, struct afb_wsj1 *wsj1);
-static void on_call(void *closure, const char *api, const char *verb, struct afb_wsj1_msg *msg);
-static void on_event(void *closure, const char *event, struct afb_wsj1_msg *msg);
static int io_event_callback(sd_event_source *src, int fd, uint32_t revents, void *closure);
-static void emit(const char *api, const char *verb, const char *object);
-static struct afb_wsj1_itf itf = {
- .on_hangup = on_hangup,
- .on_call = on_call,
- .on_event = on_event
+static void wsj1_emit(const char *api, const char *verb, const char *object);
+static void pws_call(const char *verb, const char *object);
+
+/* the callback interface for wsj1 */
+static struct afb_wsj1_itf wsj1_itf = {
+ .on_hangup = on_wsj1_hangup,
+ .on_call = on_wsj1_call,
+ .on_event = on_wsj1_event
};
+/* the callback interface for pws */
+static struct afb_proto_ws_client_itf pws_itf = {
+ .on_reply_success = on_pws_reply_success,
+ .on_reply_fail = on_pws_reply_fail,
+ .on_event_create = on_pws_event_create,
+ .on_event_remove = on_pws_event_remove,
+ .on_event_subscribe = on_pws_event_subscribe,
+ .on_event_unsubscribe = on_pws_event_unsubscribe,
+ .on_event_push = on_pws_event_push,
+ .on_event_broadcast = on_pws_event_broadcast,
+ .on_subcall = on_pws_subcall,
+};
+
+/* global variables */
static struct afb_wsj1 *wsj1;
+static struct afb_proto_ws *pws;
+static int breakcon;
static int exonrep;
static int callcount;
+static int human;
+static int raw;
+static int direct;
static sd_event_source *evsrc;
+static char *sessionid = "afb-client-demo";
+/* print usage of the program */
static void usage(int status, char *arg0)
{
char *name = strrchr(arg0, '/');
name = name ? name + 1 : arg0;
- fprintf(status ? stderr : stdin, "usage: %s uri [api verb data]\n", name);
+ fprintf(status ? stderr : stdout, "usage: %s [-H [-r]] [-b] uri [api verb [data]]\n", name);
+ fprintf(status ? stderr : stdout, " %s -d [-H [-r]] [-b] uri [verb [data]]\n", name);
exit(status);
}
+/* entry function */
int main(int ac, char **av, char **env)
{
- if (ac != 2 && ac != 5)
- usage(1, av[0]);
- if (!strcmp(av[1], "-h") || !strcmp(av[1], "--help"))
- usage(0, av[0]);
+ int rc;
+ char *a0;
+ sd_event *loop;
+
+ /* get the program name */
+ a0 = av[0];
- wsj1 = afb_ws_client_connect_wsj1(av[1], &itf, NULL);
- if (wsj1 == NULL) {
- fprintf(stderr, "connection to %s failed: %m\n", av[1]);
+ /* check options */
+ while (ac > 1 && av[1][0] == '-') {
+ if (av[1][1] == '-') {
+ /* long option */
+
+ if (!strcmp(av[1], "--human")) /* request for human output */
+ human = 1;
+
+ else if (!strcmp(av[1], "--raw")) /* request for raw output */
+ raw = 1;
+
+ else if (!strcmp(av[1], "--direct")) /* request for direct api */
+ direct = 1;
+
+ else if (!strcmp(av[1], "--break")) /* request to break connection */
+ breakcon = 1;
+
+ /* emit usage and exit */
+ else
+ usage(!!strcmp(av[1], "--help"), a0);
+ } else {
+ /* short option(s) */
+ for (rc = 1 ; av[1][rc] ; rc++)
+ switch (av[1][rc]) {
+ case 'H': human = 1; break;
+ case 'r': raw = 1; break;
+ case 'd': direct = 1; break;
+ case 'b': breakcon = 1; break;
+ default: usage(av[1][rc] != 'h', a0);
+ }
+ }
+ av++;
+ ac--;
+ }
+
+ /* check the argument count */
+ if (ac != 2 && ac != 4 && ac != 5)
+ usage(1, a0);
+
+ /* set raw by default */
+ if (!human)
+ raw = 1;
+
+ /* get the default event loop */
+ rc = sd_event_default(&loop);
+ if (rc < 0) {
+ fprintf(stderr, "connection to default event loop failed: %s\n", strerror(-rc));
return 1;
}
+ /* connect the websocket wsj1 to the uri given by the first argument */
+ if (direct) {
+ pws = afb_ws_client_connect_api(loop, av[1], &pws_itf, NULL);
+ if (pws == NULL) {
+ fprintf(stderr, "connection to %s failed: %m\n", av[1]);
+ return 1;
+ }
+ afb_proto_ws_on_hangup(pws, on_pws_hangup);
+ } else {
+ wsj1 = afb_ws_client_connect_wsj1(loop, av[1], &wsj1_itf, NULL);
+ if (wsj1 == NULL) {
+ fprintf(stderr, "connection to %s failed: %m\n", av[1]);
+ return 1;
+ }
+ }
+
+ /* test the behaviour */
if (ac == 2) {
+ /* get requests from stdin */
fcntl(0, F_SETFL, O_NONBLOCK);
- sd_event_add_io(afb_common_get_event_loop(), &evsrc, 0, EPOLLIN, io_event_callback, NULL);
+ sd_event_add_io(loop, &evsrc, 0, EPOLLIN, io_event_callback, NULL);
} else {
+ /* the request is defined by the arguments */
exonrep = 1;
- emit(av[2], av[3], av[4]);
+ if (direct)
+ pws_call(av[2], av[3]);
+ else
+ wsj1_emit(av[2], av[3], av[4]);
}
+
+ /* loop until end */
for(;;)
- sd_event_run(afb_common_get_event_loop(), 30000000);
+ sd_event_run(loop, 30000000);
return 0;
}
-static void on_hangup(void *closure, struct afb_wsj1 *wsj1)
+/* decrement the count of calls */
+static void dec_callcount()
+{
+ callcount--;
+ if (exonrep && !callcount)
+ exit(0);
+}
+
+/* called when wsj1 hangsup */
+static void on_wsj1_hangup(void *closure, struct afb_wsj1 *wsj1)
{
printf("ON-HANGUP\n");
+ fflush(stdout);
exit(0);
}
-static void on_call(void *closure, const char *api, const char *verb, struct afb_wsj1_msg *msg)
+/* called when wsj1 receives a method invocation */
+static void on_wsj1_call(void *closure, const char *api, const char *verb, struct afb_wsj1_msg *msg)
{
int rc;
- printf("ON-CALL %s/%s(%s)\n", api, verb, afb_wsj1_msg_object_s(msg));
+ if (raw)
+ printf("ON-CALL %s/%s(%s)\n", api, verb, afb_wsj1_msg_object_s(msg));
+ if (human)
+ printf("ON-CALL %s/%s:\n%s\n", api, verb,
+ json_object_to_json_string_ext(afb_wsj1_msg_object_j(msg),
+ JSON_C_TO_STRING_PRETTY));
+ fflush(stdout);
rc = afb_wsj1_reply_error_s(msg, "\"unimplemented\"", NULL);
if (rc < 0)
fprintf(stderr, "replying failed: %m\n");
}
-static void on_event(void *closure, const char *event, struct afb_wsj1_msg *msg)
+/* called when wsj1 receives an event */
+static void on_wsj1_event(void *closure, const char *event, struct afb_wsj1_msg *msg)
{
- printf("ON-EVENT %s(%s)\n", event, afb_wsj1_msg_object_s(msg));
-}
-
-static void event(const char *event, const char *object)
-{
- int rc;
-
- rc = afb_wsj1_send_event_s(wsj1, event, object);
- if (rc < 0)
- fprintf(stderr, "sending !%s(%s) failed: %m\n", event, object);
+ if (raw)
+ printf("ON-EVENT %s(%s)\n", event, afb_wsj1_msg_object_s(msg));
+ if (human)
+ printf("ON-EVENT %s:\n%s\n", event,
+ json_object_to_json_string_ext(afb_wsj1_msg_object_j(msg),
+ JSON_C_TO_STRING_PRETTY));
+ fflush(stdout);
}
-static void on_reply(void *closure, struct afb_wsj1_msg *msg)
+/* called when wsj1 receives a reply */
+static void on_wsj1_reply(void *closure, struct afb_wsj1_msg *msg)
{
- printf("ON-REPLY %s: %s\n", (char*)closure, afb_wsj1_msg_object_s(msg));
+ if (raw)
+ printf("ON-REPLY %s: %s\n", (char*)closure, afb_wsj1_msg_object_s(msg));
+ if (human)
+ printf("ON-REPLY %s: %s\n%s\n", (char*)closure,
+ afb_wsj1_msg_is_reply_ok(msg) ? "OK" : "ERROR",
+ json_object_to_json_string_ext(afb_wsj1_msg_object_j(msg),
+ JSON_C_TO_STRING_PRETTY));
+ fflush(stdout);
free(closure);
- callcount--;
- if (exonrep && !callcount)
- //afb_wsj1_hangup(afb_wsj1_msg_wsj1(msg));
- exit(0);
+ dec_callcount();
}
-static void call(const char *api, const char *verb, const char *object)
+/* makes a call */
+static void wsj1_call(const char *api, const char *verb, const char *object)
{
static int num = 0;
char *key;
int rc;
+ /* allocates an id for the request */
rc = asprintf(&key, "%d:%s/%s", ++num, api, verb);
+
+ /* send the request */
callcount++;
- rc = afb_wsj1_call_s(wsj1, api, verb, object, on_reply, key);
+ rc = afb_wsj1_call_s(wsj1, api, verb, object, on_wsj1_reply, key);
if (rc < 0) {
fprintf(stderr, "calling %s/%s(%s) failed: %m\n", api, verb, object);
- callcount--;
+ dec_callcount();
}
}
-static void emit(const char *api, const char *verb, const char *object)
+/* sends an event */
+static void wsj1_event(const char *event, const char *object)
+{
+ int rc;
+
+ rc = afb_wsj1_send_event_s(wsj1, event, object);
+ if (rc < 0)
+ fprintf(stderr, "sending !%s(%s) failed: %m\n", event, object);
+}
+
+/* emits either a call (when api!='!') or an event */
+static void wsj1_emit(const char *api, const char *verb, const char *object)
{
+ if (object == NULL || object[0] == 0)
+ object = "null";
if (api[0] == '!' && api[1] == 0)
- event(verb, object);
+ wsj1_event(verb, object);
else
- call(api, verb, object);
+ wsj1_call(api, verb, object);
+ if (breakcon)
+ exit(0);
}
+/* called when something happens on stdin */
static int io_event_callback(sd_event_source *src, int fd, uint32_t revents, void *closure)
{
static size_t count = 0;
count += (size_t)rc;
/* normalise the buffer content */
- /* TODO: handle backspace \x7f */
+ /* TODO: handle backspace \x7f ? */
/* process the lines */
pos = 0;
while(i < count && strchr(sep, line[i])) i++;
api[0] = i; while(i < count && !strchr(sepnl, line[i])) i++; api[1] = i;
while(i < count && strchr(sep, line[i])) i++;
- verb[0] = i; while(i < count && !strchr(sepnl, line[i])) i++; verb[1] = i;
- while(i < count && strchr(sep, line[i])) i++;
+ if (direct) {
+ verb[0] = api[0];
+ verb[1] = api[1];
+ } else {
+ verb[0] = i; while(i < count && !strchr(sepnl, line[i])) i++; verb[1] = i;
+ while(i < count && strchr(sep, line[i])) i++;
+ }
rest[0] = i; while(i < count && line[i] != '\n') i++; rest[1] = i;
if (i == count) break;
line[i++] = 0;
- if (api[0] == api[1] || verb[0] == verb[1] || rest[0] == rest[1])
- fprintf(stderr, "bad line: %s\n", line+pos);
- else {
+ if (api[0] == api[1]) {
+ /* empty line */
+ } else if (line[api[0]] == '#') {
+ /* comment */
+ } else if (verb[0] == verb[1]) {
+ fprintf(stderr, "verb missing, bad line: %s\n", line+pos);
+ } else {
line[api[1]] = line[verb[1]] = 0;
- emit(line + api[0], line + verb[0], line + rest[0]);
+ if (direct)
+ pws_call(line + verb[0], line + rest[0]);
+ else
+ wsj1_emit(line + api[0], line + verb[0], line + rest[0]);
}
pos = i;
}
return 1;
}
+static void on_pws_reply_success(void *closure, void *request, struct json_object *result, const char *info)
+{
+ if (raw)
+ printf("ON-REPLY-SUCCESS %s: [%s] %s\n", (char*)request, info?:"", json_object_to_json_string(result));
+ if (human)
+ printf("ON-REPLY-SUCCESS %s: %s\n%s\n", (char*)request, info?:"", json_object_to_json_string_ext(result, JSON_C_TO_STRING_PRETTY));
+ fflush(stdout);
+ free(request);
+ dec_callcount();
+}
+
+static void on_pws_reply_fail(void *closure, void *request, const char *status, const char *info)
+{
+ printf("ON-REPLY-FAIL %s: %s [%s]\n", (char*)request, status?:"?", info?:"");
+ fflush(stdout);
+ free(request);
+ dec_callcount();
+}
+
+static void on_pws_event_create(void *closure, const char *event_name, int event_id)
+{
+ printf("ON-EVENT-CREATE: [%d:%s]\n", event_id, event_name);
+ fflush(stdout);
+}
+
+static void on_pws_event_remove(void *closure, const char *event_name, int event_id)
+{
+ printf("ON-EVENT-REMOVE: [%d:%s]\n", event_id, event_name);
+ fflush(stdout);
+}
+
+static void on_pws_event_subscribe(void *closure, void *request, const char *event_name, int event_id)
+{
+ printf("ON-EVENT-SUBSCRIBE %s: [%d:%s]\n", (char*)request, event_id, event_name);
+ fflush(stdout);
+}
+
+static void on_pws_event_unsubscribe(void *closure, void *request, const char *event_name, int event_id)
+{
+ printf("ON-EVENT-UNSUBSCRIBE %s: [%d:%s]\n", (char*)request, event_id, event_name);
+ fflush(stdout);
+}
+
+static void on_pws_event_push(void *closure, const char *event_name, int event_id, struct json_object *data)
+{
+ if (raw)
+ printf("ON-EVENT-PUSH: [%d:%s] %s\n", event_id, event_name, json_object_to_json_string(data));
+ if (human)
+ printf("ON-EVENT-PUSH: [%d:%s]\n%s\n", event_id, event_name, json_object_to_json_string_ext(data, JSON_C_TO_STRING_PRETTY));
+ fflush(stdout);
+}
+
+static void on_pws_event_broadcast(void *closure, const char *event_name, struct json_object *data)
+{
+ if (raw)
+ printf("ON-EVENT-BROADCAST: [%s] %s\n", event_name, json_object_to_json_string(data));
+ if (human)
+ printf("ON-EVENT-BROADCAST: [%s]\n%s\n", event_name, json_object_to_json_string_ext(data, JSON_C_TO_STRING_PRETTY));
+ fflush(stdout);
+}
+
+static void on_pws_subcall(void *closure, struct afb_proto_ws_subcall *subcall, void *request, const char *api, const char *verb, struct json_object *args)
+{
+ if (raw)
+ printf("ON-SUBCALL %s: %s/%s %s\n", (char*)request, api, verb, json_object_to_json_string(args));
+ if (human)
+ printf("ON-SUBCALL %s: %s/%s\n%s\n", (char*)request, api, verb, json_object_to_json_string_ext(args, JSON_C_TO_STRING_PRETTY));
+ afb_proto_ws_subcall_reply(subcall, 1, NULL);
+ fflush(stdout);
+}
+
+/* makes a call */
+static void pws_call(const char *verb, const char *object)
+{
+ static int num = 0;
+ char *key;
+ int rc;
+ struct json_object *o;
+
+ /* allocates an id for the request */
+ rc = asprintf(&key, "%d:%s", ++num, verb);
+
+ /* send the request */
+ callcount++;
+ if (object == NULL || object[0] == 0 || !strcmp(object, "null"))
+ o = NULL;
+ else {
+ o = json_tokener_parse(object);
+ if (!o)
+ o = json_object_new_string(object);
+ }
+ rc = afb_proto_ws_client_call(pws, verb, o, sessionid, key);
+ json_object_put(o);
+ if (rc < 0) {
+ fprintf(stderr, "calling %s(%s) failed: %m\n", verb, object?:"");
+ dec_callcount();
+ }
+ if (breakcon)
+ exit(0);
+}
+
+/* called when pws hangsup */
+static void on_pws_hangup(void *closure)
+{
+ printf("ON-HANGUP\n");
+ fflush(stdout);
+ exit(0);
+}
+
+