-/*
- * Copyright (C) 2015, 2016 "IoT.bzh"
+/*
+ * Copyright (C) 2015, 2016, 2017 "IoT.bzh"
* Author "Fulup Ar Foll"
* Author José Bollo <jose.bollo@iot.bzh>
*
#include <systemd/sd-event.h>
-#include "afb-common.h" /* TODO: remove dependency to afb-common.h */
#include "afb-wsj1.h"
#include "afb-ws-client.h"
+/* declaration of functions */
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);
+/* the callback interface for wsj1 */
static struct afb_wsj1_itf itf = {
.on_hangup = on_hangup,
.on_call = on_call,
.on_event = on_event
};
+/* global variables */
static struct afb_wsj1 *wsj1;
static int exonrep;
static int callcount;
static sd_event_source *evsrc;
+/* 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 uri [api verb [data]]\n", name);
exit(status);
}
+/* entry function */
int main(int ac, char **av, char **env)
{
- if (ac != 2 && ac != 5)
+ int rc;
+ sd_event *loop;
+
+ /* check the argument count */
+ if (ac != 2 && ac != 4 && ac != 5)
usage(1, av[0]);
+
+ /* emit error and exit if requested */
if (!strcmp(av[1], "-h") || !strcmp(av[1], "--help"))
usage(0, av[0]);
- wsj1 = afb_ws_client_connect_wsj1(av[1], &itf, NULL);
+ /* 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 */
+ wsj1 = afb_ws_client_connect_wsj1(loop, av[1], &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]);
}
+
+ /* loop until end */
for(;;)
- sd_event_run(afb_common_get_event_loop(), 30000000);
+ sd_event_run(loop, 30000000);
return 0;
}
+/* called when wsj1 hangsup */
static void on_hangup(void *closure, struct afb_wsj1 *wsj1)
{
printf("ON-HANGUP\n");
exit(0);
}
+/* called when wsj1 receives a method invocation */
static void on_call(void *closure, const char *api, const char *verb, struct afb_wsj1_msg *msg)
{
int rc;
fprintf(stderr, "replying failed: %m\n");
}
+/* called when wsj1 receives an event */
static void on_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);
-}
-
+/* called when wsj1 receives a reply */
static void on_reply(void *closure, struct afb_wsj1_msg *msg)
{
printf("ON-REPLY %s: %s\n", (char*)closure, afb_wsj1_msg_object_s(msg));
exit(0);
}
+/* makes a call */
static void 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);
if (rc < 0) {
}
}
+/* sends an event */
+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);
+}
+
+/* emits either a call (when api!='!') or an event */
static void 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);
else
call(api, verb, object);
}
+/* 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;
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])
+ if (api[0] == api[1] || verb[0] == verb[1])
fprintf(stderr, "bad line: %s\n", line+pos);
else {
line[api[1]] = line[verb[1]] = 0;
Code Review / src / app-framework-binder.git / blobdiff