/*
- * Copyright (C) 2015-2018 "IoT.bzh"
+ * Copyright (C) 2015-2019 "IoT.bzh"
* Author José Bollo <jose.bollo@iot.bzh>
*
* Licensed under the Apache License, Version 2.0 (the "License");
#include "afb-ws.h"
#include "afb-msg-json.h"
#include "afb-proto-ws.h"
-#include "jobs.h"
#include "fdev.h"
+#include "verbose.h"
struct afb_proto_ws;
struct client_call {
struct client_call *next; /* the next call */
struct afb_proto_ws *protows; /* the proto_ws */
- void *request;
+ void *request; /* the request closure */
uint32_t callid; /* the message identifier */
};
/* count of references */
int refcount;
- /* file descriptor */
- struct fdev *fdev;
-
/* resource control */
pthread_mutex_t mutex;
void (*on_hangup)(void *closure);
/* queuing facility for processing messages */
- int (*queuing)(void (*process)(int s, void *c), void *closure);
+ int (*queuing)(struct afb_proto_ws *proto, void (*process)(int s, void *c), void *closure);
};
/******************* streaming objects **********************************/
-#define WRITEBUF_COUNT_MAX 32
+#define WRITEBUF_COUNT_MAX 32
+#define WRITEBUF_BUFSZ (WRITEBUF_COUNT_MAX * sizeof(uint32_t))
+
struct writebuf
{
+ int iovcount, bufcount;
struct iovec iovec[WRITEBUF_COUNT_MAX];
- uint32_t uints[WRITEBUF_COUNT_MAX];
- int count;
+ char buf[WRITEBUF_BUFSZ];
};
struct readbuf
static int writebuf_put(struct writebuf *wb, const void *value, size_t length)
{
- int i = wb->count;
+ int i = wb->iovcount;
if (i == WRITEBUF_COUNT_MAX)
return 0;
wb->iovec[i].iov_base = (void*)value;
wb->iovec[i].iov_len = length;
- wb->count = i + 1;
+ wb->iovcount = i + 1;
return 1;
}
-static int writebuf_char(struct writebuf *wb, char value)
+static int writebuf_putbuf(struct writebuf *wb, const void *value, int length)
{
- int i = wb->count;
- if (i == WRITEBUF_COUNT_MAX)
+ char *p;
+ int i = wb->iovcount, n = wb->bufcount, nafter;
+
+ /* check enough length */
+ nafter = n + length;
+ if (nafter > WRITEBUF_BUFSZ)
return 0;
- *(char*)&wb->uints[i] = value;
- wb->iovec[i].iov_base = &wb->uints[i];
- wb->iovec[i].iov_len = 1;
- wb->count = i + 1;
+
+ /* get where to store */
+ p = &wb->buf[n];
+ if (i && p == (((char*)wb->iovec[i - 1].iov_base) + wb->iovec[i - 1].iov_len))
+ /* increase previous iovec */
+ wb->iovec[i - 1].iov_len += (size_t)length;
+ else if (i == WRITEBUF_COUNT_MAX)
+ /* no more iovec */
+ return 0;
+ else {
+ /* new iovec */
+ wb->iovec[i].iov_base = p;
+ wb->iovec[i].iov_len = (size_t)length;
+ wb->iovcount = i + 1;
+ }
+ /* store now */
+ memcpy(p, value, (size_t)length);
+ wb->bufcount = nafter;
return 1;
}
+static int writebuf_char(struct writebuf *wb, char value)
+{
+ return writebuf_putbuf(wb, &value, 1);
+}
+
static int writebuf_uint32(struct writebuf *wb, uint32_t value)
{
- int i = wb->count;
- if (i == WRITEBUF_COUNT_MAX)
- return 0;
- wb->uints[i] = htole32(value);
- wb->iovec[i].iov_base = &wb->uints[i];
- wb->iovec[i].iov_len = sizeof wb->uints[i];
- wb->count = i + 1;
- return 1;
+ value = htole32(value);
+ return writebuf_putbuf(wb, &value, (int)sizeof value);
}
static int writebuf_string_length(struct writebuf *wb, const char *value, size_t length)
binary->rb.head = data;
binary->rb.end = data + size;
if (!protows->queuing
- || protows->queuing(processing, binary) < 0)
+ || protows->queuing(protows, processing, binary) < 0)
processing(0, binary);
return;
}
free(data);
}
+/******************* sending messages *****************/
+
+static int proto_write(struct afb_proto_ws *protows, struct writebuf *wb)
+{
+ int rc;
+ struct afb_ws *ws;
+
+ pthread_mutex_lock(&protows->mutex);
+ ws = protows->ws;
+ if (ws == NULL) {
+ errno = EPIPE;
+ rc = -1;
+ } else {
+ rc = afb_ws_binary_v(ws, wb->iovec, wb->iovcount);
+ if (rc > 0)
+ rc = 0;
+ }
+ pthread_mutex_unlock(&protows->mutex);
+ return rc;
+}
+
/******************* ws request part for server *****************/
void afb_proto_ws_call_addref(struct afb_proto_ws_call *call)
int afb_proto_ws_call_reply(struct afb_proto_ws_call *call, struct json_object *obj, const char *error, const char *info)
{
int rc = -1;
- struct writebuf wb = { .count = 0 };
+ struct writebuf wb = { .iovcount = 0, .bufcount = 0 };
struct afb_proto_ws *protows = call->protows;
if (writebuf_char(&wb, CHAR_FOR_REPLY)
&& writebuf_uint32(&wb, call->callid)
&& writebuf_nullstring(&wb, error)
&& writebuf_nullstring(&wb, info)
- && writebuf_object(&wb, obj)) {
- pthread_mutex_lock(&protows->mutex);
- rc = afb_ws_binary_v(protows->ws, wb.iovec, wb.count);
- pthread_mutex_unlock(&protows->mutex);
- if (rc >= 0) {
- rc = 0;
- goto success;
- }
- }
-success:
+ && writebuf_object(&wb, obj))
+ rc = proto_write(protows, &wb);
return rc;
}
int afb_proto_ws_call_subscribe(struct afb_proto_ws_call *call, const char *event_name, int event_id)
{
int rc = -1;
- struct writebuf wb = { .count = 0 };
+ struct writebuf wb = { .iovcount = 0, .bufcount = 0 };
struct afb_proto_ws *protows = call->protows;
if (writebuf_char(&wb, CHAR_FOR_EVT_SUBSCRIBE)
&& writebuf_uint32(&wb, call->callid)
&& writebuf_uint32(&wb, (uint32_t)event_id)
- && writebuf_string(&wb, event_name)) {
- pthread_mutex_lock(&protows->mutex);
- rc = afb_ws_binary_v(protows->ws, wb.iovec, wb.count);
- pthread_mutex_unlock(&protows->mutex);
- if (rc >= 0) {
- rc = 0;
- goto success;
- }
- }
-success:
+ && writebuf_string(&wb, event_name))
+ rc = proto_write(protows, &wb);
return rc;
}
int afb_proto_ws_call_unsubscribe(struct afb_proto_ws_call *call, const char *event_name, int event_id)
{
int rc = -1;
- struct writebuf wb = { .count = 0 };
+ struct writebuf wb = { .iovcount = 0, .bufcount = 0 };
struct afb_proto_ws *protows = call->protows;
if (writebuf_char(&wb, CHAR_FOR_EVT_UNSUBSCRIBE)
&& writebuf_uint32(&wb, call->callid)
&& writebuf_uint32(&wb, (uint32_t)event_id)
- && writebuf_string(&wb, event_name)) {
- pthread_mutex_lock(&protows->mutex);
- rc = afb_ws_binary_v(protows->ws, wb.iovec, wb.count);
- pthread_mutex_unlock(&protows->mutex);
- if (rc >= 0) {
- rc = 0;
- goto success;
- }
- }
-success:
+ && writebuf_string(&wb, event_name))
+ rc = proto_write(protows, &wb);
return rc;
}
if (protows->client_itf->on_event_create && client_msg_event_read(rb, &event_id, &event_name))
protows->client_itf->on_event_create(protows->closure, event_name, (int)event_id);
+ else
+ ERROR("Ignoring creation of event");
}
/* removes an event */
if (protows->client_itf->on_event_remove && client_msg_event_read(rb, &event_id, &event_name))
protows->client_itf->on_event_remove(protows->closure, event_name, (int)event_id);
+ else
+ ERROR("Ignoring deletion of event");
}
/* subscribes an event */
if (protows->client_itf->on_event_subscribe && client_msg_call_get(protows, rb, &call) && client_msg_event_read(rb, &event_id, &event_name))
protows->client_itf->on_event_subscribe(protows->closure, call->request, event_name, (int)event_id);
+ else
+ ERROR("Ignoring subscription to event");
}
/* unsubscribes an event */
if (protows->client_itf->on_event_unsubscribe && client_msg_call_get(protows, rb, &call) && client_msg_event_read(rb, &event_id, &event_name))
protows->client_itf->on_event_unsubscribe(protows->closure, call->request, event_name, (int)event_id);
+ else
+ ERROR("Ignoring unsubscription to event");
}
/* receives broadcasted events */
static void client_on_event_broadcast(struct afb_proto_ws *protows, struct readbuf *rb)
{
- const char *event_name;
+ const char *event_name, *uuid;
+ char hop;
struct json_object *object;
- if (protows->client_itf->on_event_broadcast && readbuf_string(rb, &event_name, NULL) && readbuf_object(rb, &object))
- protows->client_itf->on_event_broadcast(protows->closure, event_name, object);
+ if (protows->client_itf->on_event_broadcast && readbuf_string(rb, &event_name, NULL) && readbuf_object(rb, &object) && (uuid = readbuf_get(rb, 16)) && readbuf_char(rb, &hop))
+ protows->client_itf->on_event_broadcast(protows->closure, event_name, object, (unsigned char*)uuid, (uint8_t)hop);
+ else
+ ERROR("Ignoring broadcast of event");
}
/* pushs an event */
if (protows->client_itf->on_event_push && client_msg_event_read(rb, &event_id, &event_name) && readbuf_object(rb, &object))
protows->client_itf->on_event_push(protows->closure, event_name, (int)event_id, object);
+ else
+ ERROR("Ignoring push of event");
}
static void client_on_reply(struct afb_proto_ws *protows, struct readbuf *rb)
{
int rc = -1;
struct client_call *call;
- struct writebuf wb = { .count = 0 };
+ struct writebuf wb = { .iovcount = 0, .bufcount = 0 };
/* allocate call data */
call = malloc(sizeof *call);
}
/* send */
- pthread_mutex_lock(&protows->mutex);
- rc = afb_ws_binary_v(protows->ws, wb.iovec, wb.count);
- pthread_mutex_unlock(&protows->mutex);
- if (rc >= 0) {
- rc = 0;
+ rc = proto_write(protows, &wb);
+ if (!rc)
goto end;
- }
clean:
client_call_destroy(call);
int afb_proto_ws_client_describe(struct afb_proto_ws *protows, void (*callback)(void*, struct json_object*), void *closure)
{
struct client_describe *desc, *d;
- struct writebuf wb = { .count = 0 };
+ struct writebuf wb = { .iovcount = 0, .bufcount = 0 };
desc = malloc(sizeof *desc);
if (!desc) {
/* send */
if (writebuf_char(&wb, CHAR_FOR_DESCRIBE)
&& writebuf_uint32(&wb, desc->descid)
- && afb_ws_binary_v(protows->ws, wb.iovec, wb.count) >= 0) {
+ && protows->ws != NULL
+ && afb_ws_binary_v(protows->ws, wb.iovec, wb.iovcount) >= 0) {
pthread_mutex_unlock(&protows->mutex);
return 0;
}
static int server_send_description(struct afb_proto_ws *protows, uint32_t descid, struct json_object *descobj)
{
- int rc;
- struct writebuf wb = { .count = 0 };
+ int rc = -1;
+ struct writebuf wb = { .iovcount = 0, .bufcount = 0 };
if (writebuf_char(&wb, CHAR_FOR_DESCRIPTION)
&& writebuf_uint32(&wb, descid)
- && writebuf_object(&wb, descobj)) {
- pthread_mutex_lock(&protows->mutex);
- rc = afb_ws_binary_v(protows->ws, wb.iovec, wb.count);
- pthread_mutex_unlock(&protows->mutex);
- if (rc >= 0)
- return 0;
- }
- return -1;
+ && writebuf_object(&wb, descobj))
+ rc = proto_write(protows, &wb);
+ return rc;
}
int afb_proto_ws_describe_put(struct afb_proto_ws_describe *describe, struct json_object *description)
static int server_event_send(struct afb_proto_ws *protows, char order, const char *event_name, int event_id, struct json_object *data)
{
- struct writebuf wb = { .count = 0 };
- int rc;
+ struct writebuf wb = { .iovcount = 0, .bufcount = 0 };
+ int rc = -1;
if (writebuf_char(&wb, order)
- && (order == CHAR_FOR_EVT_BROADCAST || writebuf_uint32(&wb, event_id))
+ && writebuf_uint32(&wb, event_id)
&& writebuf_string(&wb, event_name)
- && (order == CHAR_FOR_EVT_ADD || order == CHAR_FOR_EVT_DEL || writebuf_object(&wb, data))) {
- pthread_mutex_lock(&protows->mutex);
- rc = afb_ws_binary_v(protows->ws, wb.iovec, wb.count);
- pthread_mutex_unlock(&protows->mutex);
- if (rc >= 0)
- return 0;
- }
- return -1;
+ && (order != CHAR_FOR_EVT_PUSH || writebuf_object(&wb, data)))
+ rc = proto_write(protows, &wb);
+ return rc;
}
int afb_proto_ws_server_event_create(struct afb_proto_ws *protows, const char *event_name, int event_id)
return server_event_send(protows, CHAR_FOR_EVT_PUSH, event_name, event_id, data);
}
-int afb_proto_ws_server_event_broadcast(struct afb_proto_ws *protows, const char *event_name, struct json_object *data)
+int afb_proto_ws_server_event_broadcast(struct afb_proto_ws *protows, const char *event_name, struct json_object *data, const unsigned char uuid[16], uint8_t hop)
{
- return server_event_send(protows, CHAR_FOR_EVT_BROADCAST, event_name, 0, data);
+ struct writebuf wb = { .iovcount = 0, .bufcount = 0 };
+ int rc = -1;
+
+ if (!hop)
+ return 0;
+
+ if (writebuf_char(&wb, CHAR_FOR_EVT_BROADCAST)
+ && writebuf_string(&wb, event_name)
+ && writebuf_object(&wb, data)
+ && writebuf_put(&wb, uuid, 16)
+ && writebuf_char(&wb, (char)(hop - 1)))
+ rc = proto_write(protows, &wb);
+ return rc;
}
/*****************************************************/
{
struct afb_proto_ws *protows = closure;
struct client_describe *cd, *ncd;
+ struct client_call *call, *ncall;
+ struct afb_ws *ws;
+ pthread_mutex_lock(&protows->mutex);
ncd = protows->describes;
+ protows->describes = NULL;
+ ncall = protows->calls;
+ protows->calls = NULL;
+ ws = protows->ws;
+ protows->ws = NULL;
+ pthread_mutex_unlock(&protows->mutex);
+
+ while (ncall) {
+ call= ncall;
+ ncall = call->next;
+ protows->client_itf->on_reply(protows->closure, call->request, NULL, "disconnected", "server hung up");
+ free(call);
+ }
+
while (ncd) {
cd= ncd;
ncd = cd->next;
free(cd);
}
- if (protows->fdev) {
- fdev_unref(protows->fdev);
- protows->fdev = 0;
+ if (ws) {
+ afb_ws_destroy(ws);
if (protows->on_hangup)
protows->on_hangup(protows->closure);
}
fcntl(fdev_fd(fdev), F_SETFL, O_NONBLOCK);
protows->ws = afb_ws_create(fdev, itf, protows);
if (protows->ws != NULL) {
- protows->fdev = fdev;
protows->refcount = 1;
protows->closure = closure;
protows->server_itf = itfs;
void afb_proto_ws_unref(struct afb_proto_ws *protows)
{
- if (!__atomic_sub_fetch(&protows->refcount, 1, __ATOMIC_RELAXED)) {
+ if (protows && !__atomic_sub_fetch(&protows->refcount, 1, __ATOMIC_RELAXED)) {
afb_proto_ws_hangup(protows);
- afb_ws_destroy(protows->ws);
pthread_mutex_destroy(&protows->mutex);
free(protows);
}
void afb_proto_ws_hangup(struct afb_proto_ws *protows)
{
- afb_ws_hangup(protows->ws);
+ if (protows->ws)
+ afb_ws_hangup(protows->ws);
}
void afb_proto_ws_on_hangup(struct afb_proto_ws *protows, void (*on_hangup)(void *closure))
protows->on_hangup = on_hangup;
}
-void afb_proto_ws_set_queuing(struct afb_proto_ws *protows, int (*queuing)(void (*)(int,void*), void*))
+void afb_proto_ws_set_queuing(struct afb_proto_ws *protows, int (*queuing)(struct afb_proto_ws*, void (*)(int,void*), void*))
{
protows->queuing = queuing;
}
Code Review / src / app-framework-binder.git / blobdiff