#include <systemd/sd-event.h>
#include <json-c/json.h>
+#if !defined(JSON_C_TO_STRING_NOSLASHESCAPE)
+#define JSON_C_TO_STRING_NOSLASHESCAPE 0
+#endif
#include "afb-wsj1.h"
#include "afb-ws-client.h"
#include "afb-proto-ws.h"
+enum {
+ Exit_Success = 0,
+ Exit_Error = 1,
+ Exit_HangUp = 2,
+ Exit_Input_Fail = 3,
+ Exit_Bad_Arg = 4,
+ Exit_Cant_Connect = 5
+};
+
+
/* 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_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 int io_event_callback(sd_event_source *src, int fd, uint32_t revents, void *closure);
+static void idle();
+static int process_stdin();
+static int on_stdin(sd_event_source *src, int fd, uint32_t revents, void *closure);
static void wsj1_emit(const char *api, const char *verb, const char *object);
static void pws_call(const char *verb, const char *object);
static int keeprun;
static int direct;
static int echo;
+static int synchro;
+static int usein;
+static sd_event *loop;
static sd_event_source *evsrc;
static char *sessionid = "afb-client-demo";
+static int exitcode = 0;
/* print usage of the program */
static void usage(int status, char *arg0)
" --help, -h Display this help\n"
" --human, -H Display human readable JSON\n"
" --raw, -r Raw output (default)\n"
+ " --sync, -s Synchronous: wait for answers\n"
" --keep-running, -k Keep running until disconnect, even if input closed\n"
"Example:\n"
" %s --human 'localhost:1234/api?token=HELLO&uuid=magic' hello ping\n"
{
int rc;
char *a0;
- sd_event *loop;
/* get the program name */
a0 = av[0];
else if (!strcmp(av[1], "--keep-running")) /* request to break connection */
keeprun = 1;
+ else if (!strcmp(av[1], "--sync")) /* request to break connection */
+ synchro = 1;
+
else if (!strcmp(av[1], "--echo")) /* request to echo inputs */
echo = 1;
/* emit usage and exit */
else
- usage(!!strcmp(av[1], "--help"), a0);
+ usage(strcmp(av[1], "--help") ? Exit_Bad_Arg : Exit_Success, a0);
} else {
/* short option(s) */
for (rc = 1 ; av[1][rc] ; rc++)
case 'd': direct = 1; break;
case 'b': breakcon = 1; break;
case 'k': keeprun = 1; break;
+ case 's': synchro = 1; break;
case 'e': echo = 1; break;
- default: usage(av[1][rc] != 'h', a0);
+ default: usage(av[1][rc] != 'h' ? Exit_Bad_Arg : Exit_Success, a0);
}
}
av++;
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;
+ return Exit_Cant_Connect;
}
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;
+ return Exit_Cant_Connect;
}
}
/* test the behaviour */
if (ac == 2) {
/* get requests from stdin */
+ usein = 1;
fcntl(0, F_SETFL, O_NONBLOCK);
- sd_event_add_io(loop, &evsrc, 0, EPOLLIN, io_event_callback, NULL);
+ if (sd_event_add_io(loop, &evsrc, 0, EPOLLIN, on_stdin, NULL) < 0)
+ evsrc = NULL;
} else {
/* the request is defined by the arguments */
+ usein = 0;
exonrep = !keeprun;
if (direct)
pws_call(av[2], av[3]);
}
/* loop until end */
- for(;;)
- sd_event_run(loop, 30000000);
+ idle();
return 0;
}
+static void idle()
+{
+ for(;;) {
+ if (!usein) {
+ if (!keeprun && !callcount)
+ exit(exitcode);
+ sd_event_run(loop, 30000000);
+ }
+ else if (!synchro || !callcount) {
+ if (!process_stdin() && usein)
+ sd_event_run(loop, 100000);
+ } else {
+ sd_event_run(loop, 30000000);
+ }
+ }
+}
+
/* decrement the count of calls */
static void dec_callcount()
{
callcount--;
if (exonrep && !callcount)
- exit(0);
+ exit(exitcode);
}
/* called when wsj1 hangsup */
{
printf("ON-HANGUP\n");
fflush(stdout);
- exit(0);
+ exit(Exit_HangUp);
}
/* called when wsj1 receives a method invocation */
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));
+ JSON_C_TO_STRING_PRETTY|JSON_C_TO_STRING_NOSLASHESCAPE));
fflush(stdout);
rc = afb_wsj1_reply_error_s(msg, "\"unimplemented\"", NULL);
if (rc < 0)
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));
+ JSON_C_TO_STRING_PRETTY|JSON_C_TO_STRING_NOSLASHESCAPE));
fflush(stdout);
}
/* called when wsj1 receives a reply */
static void on_wsj1_reply(void *closure, struct afb_wsj1_msg *msg)
{
+ int iserror = !afb_wsj1_msg_is_reply_ok(msg);
+ exitcode = iserror ? Exit_Error : Exit_Success;
if (raw)
printf("%s\n", 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",
+ iserror ? "ERROR" : "OK",
json_object_to_json_string_ext(afb_wsj1_msg_object_j(msg),
- JSON_C_TO_STRING_PRETTY));
+ JSON_C_TO_STRING_PRETTY|JSON_C_TO_STRING_NOSLASHESCAPE));
fflush(stdout);
free(closure);
dec_callcount();
exit(0);
}
-/* called when something happens on stdin */
-static int io_event_callback(sd_event_source *src, int fd, uint32_t revents, void *closure)
+/* process stdin */
+static int process_stdin()
{
static size_t count = 0;
static char line[16384];
static char sep[] = " \t";
static char sepnl[] = " \t\n";
- ssize_t rc;
+ int result = 0;
+ ssize_t rc = 0;
size_t pos;
/* read the buffer */
- do { rc = read(0, line + count, sizeof line - count); } while (rc < 0 && errno == EINTR);
+ while (sizeof line > count) {
+ rc = read(0, line + count, sizeof line - count);
+ if (rc >= 0 || errno != EINTR)
+ break;
+ }
if (rc < 0) {
+ if (errno == EAGAIN)
+ return 0;
fprintf(stderr, "read error: %m\n");
- exit(1);
+ exit(Exit_Input_Fail);
}
if (rc == 0) {
- if (!keeprun) {
+ usein = count != 0;
+ if (!usein && !keeprun) {
if (!callcount)
- exit(0);
+ exit(exitcode);
exonrep = 1;
}
- sd_event_source_unref(evsrc);
}
count += (size_t)rc;
+ if (synchro && callcount)
+ return 0;
/* normalise the buffer content */
/* TODO: handle backspace \x7f ? */
-
/* process the lines */
pos = 0;
for(;;) {
rest[0] = i; while(i < count && line[i] != '\n') i++; rest[1] = i;
if (i == count) break;
line[i++] = 0;
+ pos = i;
if (api[0] == api[1]) {
/* empty line */
} else if (line[api[0]] == '#') {
pws_call(line + verb[0], line + rest[0]);
else
wsj1_emit(line + api[0], line + verb[0], line + rest[0]);
+ result = 1;
+ break;
}
- pos = i;
}
count -= pos;
if (count == sizeof line) {
fprintf(stderr, "overflow\n");
- exit(1);
+ exit(Exit_Input_Fail);
}
if (count)
memmove(line, line + pos, count);
+
+ return result;
+}
+
+/* called when something happens on stdin */
+static int on_stdin(sd_event_source *src, int fd, uint32_t revents, void *closure)
+{
+ process_stdin();
+ if (!usein) {
+ sd_event_source_unref(src);
+ evsrc = NULL;
+ }
return 1;
}
static void on_pws_reply(void *closure, void *request, struct json_object *result, const char *error, const char *info)
{
+ int iserror = !!error;
+ exitcode = iserror ? Exit_Error : Exit_Success;
error = error ?: "success";
if (raw) {
/* TODO: transitionnal: fake the structured response */
if (result)
json_object_object_add(x, "response", json_object_get(result));
- printf("%s\n", json_object_to_json_string(x));
+ printf("%s\n", json_object_to_json_string_ext(x, JSON_C_TO_STRING_NOSLASHESCAPE));
json_object_put(x);
}
if (human)
- printf("ON-REPLY %s: %s %s\n%s\n", (char*)request, error, info ?: "", json_object_to_json_string_ext(result, JSON_C_TO_STRING_PRETTY));
+ printf("ON-REPLY %s: %s %s\n%s\n", (char*)request, error, info ?: "", json_object_to_json_string_ext(result, JSON_C_TO_STRING_PRETTY|JSON_C_TO_STRING_NOSLASHESCAPE));
fflush(stdout);
free(request);
dec_callcount();
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]\n%s\n", event_id, event_name, json_object_to_json_string_ext(data, 0));
+ printf("ON-EVENT-PUSH: [%d:%s]\n%s\n", event_id, event_name, json_object_to_json_string_ext(data, JSON_C_TO_STRING_NOSLASHESCAPE));
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));
+ 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|JSON_C_TO_STRING_NOSLASHESCAPE));
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]\n%s\n", event_name, json_object_to_json_string_ext(data, 0));
+ printf("ON-EVENT-BROADCAST: [%s]\n%s\n", event_name, json_object_to_json_string_ext(data, JSON_C_TO_STRING_NOSLASHESCAPE));
if (human)
- printf("ON-EVENT-BROADCAST: [%s]\n%s\n", event_name, json_object_to_json_string_ext(data, JSON_C_TO_STRING_PRETTY));
+ printf("ON-EVENT-BROADCAST: [%s]\n%s\n", event_name, json_object_to_json_string_ext(data, JSON_C_TO_STRING_PRETTY|JSON_C_TO_STRING_NOSLASHESCAPE));
fflush(stdout);
}
char *key;
int rc;
struct json_object *o;
+ enum json_tokener_error jerr;
/* 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"))
+ if (object == NULL || object[0] == 0)
o = NULL;
else {
- o = json_tokener_parse(object);
- if (!o)
+ o = json_tokener_parse_verbose(object, &jerr);
+ if (jerr != json_tokener_success)
o = json_object_new_string(object);
}
rc = afb_proto_ws_client_call(pws, verb, o, sessionid, key, NULL);
{
printf("ON-HANGUP\n");
fflush(stdout);
- exit(0);
+ exit(Exit_HangUp);
}
-
-