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-rw-r--r--plugins/samples/HelloWorld.c18
-rw-r--r--src/afb-api-so.c12
-rw-r--r--src/afb-ws-json.c46
-rw-r--r--src/session.c97
-rw-r--r--src/session.h22
-rw-r--r--test/AFB.js15
-rw-r--r--test/hello-world.html1
7 files changed, 199 insertions, 12 deletions
diff --git a/plugins/samples/HelloWorld.c b/plugins/samples/HelloWorld.c
index bf809cc3..ec060e97 100644
--- a/plugins/samples/HelloWorld.c
+++ b/plugins/samples/HelloWorld.c
@@ -21,13 +21,14 @@
#include "afb-plugin.h"
+const struct AFB_interface *interface;
+
// Sample Generic Ping Debug API
static void ping(struct afb_req request, json_object *jresp, const char *tag)
{
- static int pingcount = 0;
- json_object *query = afb_req_json(request);
-
- afb_req_success_f(request, jresp, "Ping Binder Daemon tag=%s count=%d query=%s", tag, ++pingcount, json_object_to_json_string(query));
+ static int pingcount = 0;
+ json_object *query = afb_req_json(request);
+ afb_req_success_f(request, jresp, "Ping Binder Daemon tag=%s count=%d query=%s", tag, ++pingcount, json_object_to_json_string(query));
}
static void pingSample (struct afb_req request)
@@ -50,6 +51,13 @@ static void pingBug (struct afb_req request)
ping((struct afb_req){NULL,NULL,NULL}, NULL, "pingBug");
}
+static void pingEvent(struct afb_req request)
+{
+ json_object *query = afb_req_json(request);
+ afb_evmgr_push(afb_daemon_get_evmgr(interface->daemon), "event", json_object_get(query));
+ ping(request, json_object_get(query), "event");
+}
+
// For samples https://linuxprograms.wordpress.com/2010/05/20/json-c-libjson-tutorial/
static void pingJson (struct afb_req request) {
@@ -76,6 +84,7 @@ static const struct AFB_restapi pluginApis[]= {
{"pingnull" , AFB_SESSION_NONE, pingNull , "Return NULL"},
{"pingbug" , AFB_SESSION_NONE, pingBug , "Do a Memory Violation"},
{"pingJson" , AFB_SESSION_NONE, pingJson , "Return a JSON object"},
+ {"pingevent", AFB_SESSION_NONE, pingEvent , "Send an event"},
{NULL}
};
@@ -88,5 +97,6 @@ static const struct AFB_plugin plugin_desc = {
const struct AFB_plugin *pluginRegister (const struct AFB_interface *itf)
{
+ interface = itf;
return &plugin_desc;
}
diff --git a/src/afb-api-so.c b/src/afb-api-so.c
index c3cb08d7..88246b58 100644
--- a/src/afb-api-so.c
+++ b/src/afb-api-so.c
@@ -46,6 +46,7 @@ extern __thread sigjmp_buf *error_handler;
struct api_so_desc {
struct AFB_plugin *plugin; /* descriptor */
+ size_t apilength;
void *handle; /* context of dlopen */
struct AFB_interface interface; /* interface */
};
@@ -65,6 +66,16 @@ static const struct afb_pollmgr_itf pollmgr_itf = {
static void afb_api_so_evmgr_push(struct api_so_desc *desc, const char *name, struct json_object *object)
{
+ size_t length;
+ char *event;
+
+ assert(desc->plugin != NULL);
+ length = strlen(name);
+ event = alloca(length + 2 + desc->apilength);
+ memcpy(event, desc->plugin->prefix, desc->apilength);
+ event[desc->apilength] = '/';
+ memcpy(event + desc->apilength + 1, name, length + 1);
+ ctxClientEventSend(NULL, event, object);
}
static const struct afb_evmgr_itf evmgr_itf = {
@@ -224,6 +235,7 @@ int afb_api_so_add_plugin(const char *path)
}
/* records the plugin */
+ desc->apilength = strlen(desc->plugin->prefix);
if (afb_apis_add(desc->plugin->prefix, (struct afb_api){
.closure = desc,
.call = (void*)call}) < 0) {
diff --git a/src/afb-ws-json.c b/src/afb-ws-json.c
index a34142c9..471831e7 100644
--- a/src/afb-ws-json.c
+++ b/src/afb-ws-json.c
@@ -52,7 +52,14 @@ struct afb_ws_json
struct afb_ws *ws;
};
-struct afb_ws_json *afb_ws_json_create(int fd, struct AFB_clientCtx *context, void (*cleanup)(void*), void *closure)
+
+static void aws_send_event(struct afb_ws_json *ws, const char *event, struct json_object *object);
+
+static const struct afb_event_sender_itf event_sender_itf = {
+ .send = (void*)aws_send_event
+};
+
+struct afb_ws_json *afb_ws_json_create(int fd, struct AFB_clientCtx *context, void (*cleanup)(void*), void *cleanup_closure)
{
struct afb_ws_json *result;
@@ -64,7 +71,7 @@ struct afb_ws_json *afb_ws_json_create(int fd, struct AFB_clientCtx *context, vo
goto error;
result->cleanup = cleanup;
- result->cleanup_closure = closure;
+ result->cleanup_closure = cleanup_closure;
result->requests = NULL;
result->context = ctxClientGet(context);
if (result->context == NULL)
@@ -78,8 +85,13 @@ struct afb_ws_json *afb_ws_json_create(int fd, struct AFB_clientCtx *context, vo
if (result->ws == NULL)
goto error4;
+ if (0 > ctxClientEventSenderAdd(result->context, (struct afb_event_sender){ .itf = &event_sender_itf, .closure = result }))
+ goto error5;
+
return result;
+error5:
+ /* TODO */
error4:
json_tokener_free(result->tokener);
error3:
@@ -100,6 +112,7 @@ static void aws_on_close(struct afb_ws_json *ws, uint16_t code, char *text, size
#define CALL 2
#define RETOK 3
#define RETERR 4
+#define EVENT 5
struct afb_wsreq
{
@@ -320,8 +333,8 @@ static struct json_object *wsreq_json(struct afb_wsreq *wsreq)
json_tokener_reset(wsreq->aws->tokener);
root = json_tokener_parse_ex(wsreq->aws->tokener, wsreq->obj, (int)wsreq->objlen);
if (root == NULL) {
- /* lazy discovering !!!! not good TODO improve*/
- root = json_object_new_object();
+ /* lazy error detection of json request. Is it to improve? */
+ root = json_object_new_string_len(wsreq->obj, (int)wsreq->objlen);
}
wsreq->root = root;
}
@@ -429,3 +442,28 @@ static void wsreq_send(struct afb_wsreq *wsreq, char *buffer, size_t size)
afb_ws_text(wsreq->aws->ws, buffer, size);
}
+static void aws_send_event(struct afb_ws_json *aws, const char *event, struct json_object *object)
+{
+ json_object *root, *reply;
+ const char *message;
+
+ /* builds the answering structure */
+ root = json_object_new_object();
+ json_object_object_add(root, "jtype", json_object_new_string("afb-event"));
+ json_object_object_add(root, "event", json_object_new_string(event));
+ if (object)
+ json_object_object_add(root, "data", object);
+
+ /* make the reply */
+ reply = json_object_new_array();
+ json_object_array_add(reply, json_object_new_int(EVENT));
+ json_object_array_add(reply, json_object_new_string(event));
+ json_object_array_add(reply, root);
+ json_object_array_add(reply, json_object_new_string(aws->context->token));
+
+ /* emits the reply */
+ message = json_object_to_json_string(reply);
+ afb_ws_text(aws->ws, message, strlen(message));
+ json_object_put(reply);
+}
+
diff --git a/src/session.c b/src/session.c
index fbc7f2fb..3e08808f 100644
--- a/src/session.c
+++ b/src/session.c
@@ -23,6 +23,7 @@
#include <string.h>
#include <uuid/uuid.h>
#include <assert.h>
+#include <errno.h>
#include "session.h"
@@ -113,7 +114,7 @@ static int ctxStoreDel (struct AFB_clientCtx *client)
for (idx=0; idx < sessions.max; idx++) {
if (sessions.store[idx] == client) {
- sessions.store[idx]=NULL;
+ sessions.store[idx] = NULL;
sessions.count--;
status = 1;
goto deleted;
@@ -138,7 +139,7 @@ static int ctxStoreAdd (struct AFB_clientCtx *client)
for (idx=0; idx < sessions.max; idx++) {
if (NULL == sessions.store[idx]) {
- sessions.store[idx]= client;
+ sessions.store[idx] = client;
sessions.count++;
status = 1;
goto added;
@@ -289,3 +290,95 @@ void ctxTokenNew (struct AFB_clientCtx *clientCtx)
clientCtx->expiration = NOW + sessions.timeout;
}
+struct afb_event_sender_list
+{
+ struct afb_event_sender_list *next;
+ struct afb_event_sender sender;
+ int refcount;
+};
+
+int ctxClientEventSenderAdd(struct AFB_clientCtx *clientCtx, struct afb_event_sender sender)
+{
+ struct afb_event_sender_list *iter, **prv;
+
+ prv = &clientCtx->senders;
+ for (;;) {
+ iter = *prv;
+ if (iter == NULL) {
+ iter = calloc(1, sizeof *iter);
+ if (iter == NULL) {
+ errno = ENOMEM;
+ return -1;
+ }
+ iter->sender = sender;
+ iter->refcount = 1;
+ *prv = iter;
+ return 0;
+ }
+ if (iter->sender.itf == sender.itf && iter->sender.closure == sender.closure) {
+ iter->refcount++;
+ return 0;
+ }
+ prv = &iter->next;
+ }
+}
+
+void ctxClientEventSenderRemove(struct AFB_clientCtx *clientCtx, struct afb_event_sender sender)
+{
+ struct afb_event_sender_list *iter, **prv;
+
+ prv = &clientCtx->senders;
+ for (;;) {
+ iter = *prv;
+ if (iter == NULL)
+ return;
+ if (iter->sender.itf == sender.itf && iter->sender.closure == sender.closure) {
+ if (!--iter->refcount) {
+ *prv = iter->next;
+ free(iter);
+ }
+ return;
+ }
+ prv = &iter->next;
+ }
+}
+
+static int send(struct AFB_clientCtx *clientCtx, const char *event, struct json_object *object)
+{
+ struct afb_event_sender_list *iter;
+ int result;
+
+ result = 0;
+ iter = clientCtx->senders;
+ while (iter != NULL) {
+ iter->sender.itf->send(iter->sender.closure, event, object);
+ result++;
+ iter = iter->next;
+ }
+
+ return result;
+}
+
+int ctxClientEventSend(struct AFB_clientCtx *clientCtx, const char *event, struct json_object *object)
+{
+ long idx;
+ time_t now;
+ int result;
+
+ if (clientCtx != NULL)
+ result = send(clientCtx, event, object);
+ else {
+ result = 0;
+ now = NOW;
+ for (idx=0; idx < sessions.max; idx++) {
+ clientCtx = sessions.store[idx];
+ if (clientCtx != NULL && !ctxStoreTooOld(clientCtx, now)) {
+ clientCtx = ctxClientGet(clientCtx);
+ result += send(clientCtx, event, object);
+ ctxClientPut(clientCtx);
+ }
+ }
+ }
+ return result;
+}
+
diff --git a/src/session.h b/src/session.h
index 569af654..7930bdb3 100644
--- a/src/session.h
+++ b/src/session.h
@@ -14,10 +14,11 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-// User Client Session Context
#pragma once
+struct json_object;
+
struct afb_context
{
void *context;
@@ -27,6 +28,19 @@ struct afb_context
extern void *afb_context_get(struct afb_context *actx);
extern void afb_context_set(struct afb_context *actx, void *context, void (*free_context)(void*));
+struct afb_event_sender_itf
+{
+ void (*send)(void *closure, const char *event, struct json_object *object);
+};
+
+struct afb_event_sender
+{
+ const struct afb_event_sender_itf *itf;
+ void *closure;
+};
+
+struct afb_event_sender_list;
+
struct AFB_clientCtx
{
time_t expiration; // expiration time of the token
@@ -35,6 +49,7 @@ struct AFB_clientCtx
struct afb_context *contexts;
char uuid[37]; // long term authentication of remote client
char token[37]; // short term authentication of remote client
+ struct afb_event_sender_list *senders;
};
extern void ctxStoreInit (int max_session_count, int timeout, const char *initok, int context_count);
@@ -43,6 +58,11 @@ extern struct AFB_clientCtx *ctxClientGetForUuid (const char *uuid);
extern struct AFB_clientCtx *ctxClientGet(struct AFB_clientCtx *clientCtx);
extern void ctxClientPut(struct AFB_clientCtx *clientCtx);
extern void ctxClientClose (struct AFB_clientCtx *clientCtx);
+
+extern int ctxClientEventSenderAdd(struct AFB_clientCtx *clientCtx, struct afb_event_sender sender);
+extern void ctxClientEventSenderRemove(struct AFB_clientCtx *clientCtx, struct afb_event_sender sender);
+extern int ctxClientEventSend(struct AFB_clientCtx *clientCtx, const char *event, struct json_object *object);
+
extern int ctxTokenCheck (struct AFB_clientCtx *clientCtx, const char *token);
extern int ctxTokenCheckLen (struct AFB_clientCtx *clientCtx, const char *token, size_t length);
extern void ctxTokenNew (struct AFB_clientCtx *clientCtx);
diff --git a/test/AFB.js b/test/AFB.js
index 309db472..44b1a908 100644
--- a/test/AFB.js
+++ b/test/AFB.js
@@ -37,12 +37,14 @@ var AFB_websocket;
var CALL = 2;
var RETOK = 3;
var RETERR = 4;
+ var EVENT = 5;
var PROTO1 = "x-afb-ws-json1";
AFB_websocket = function(onopen, onabort) {
this.ws = new WebSocket(urlws, [ PROTO1 ]);
this.pendings = {};
+ this.awaitens = {};
this.counter = 0;
this.ws.onopen = onopen.bind(this);
this.ws.onerror = onerror.bind(this);
@@ -90,6 +92,10 @@ var AFB_websocket;
delete this.pendings[id];
}
switch (code) {
+ case EVENT:
+ var a = this.awaitens[id];
+ if (a)
+ a.forEach(function(handler){handler(ans);});
case RETOK:
pend && pend.onsuccess && pend.onsuccess(ans, this);
break;
@@ -112,9 +118,16 @@ var AFB_websocket;
this.ws.send(JSON.stringify(arr));
}
+ function onevent(api, name, handler) {
+ var id = api+"/"+name;
+ var list = this.awaitens[id] || (this.awaitens[id] = []);
+ list.push(handler);
+ }
+
AFB_websocket.prototype = {
close: close,
- call: call
+ call: call,
+ onevent: onevent
};
}
/*********************************************/
diff --git a/test/hello-world.html b/test/hello-world.html
index 67464ff5..f8e0f54a 100644
--- a/test/hello-world.html
+++ b/test/hello-world.html
@@ -9,5 +9,6 @@
<li><a href="api/hello/pingnull">ping null</a>
<li><a href="api/hello/pingbug">ping bug</a>
<li><a href="api/hello/pingJson?toto&tata&titi=u">ping json</a>
+ <li><a href="api/hello/pingevent?toto&tata&titi=u">ping event</a>
<li><a href="api/hello/none">not a verb</a>
<li><a href="api/none/none">not an api</a>