static int parse_subscribe_response(pubnub_t *p)
{
char *reply = p->http_reply;
unsigned int replylen = strlen(reply);
if (reply[replylen-1] != ']' && replylen > 2) {
replylen -= 2; // XXX: this seems required by Manxiang
}
if ((reply[0] != '[') || (reply[replylen-1] != ']') || (reply[replylen-2] != '"')) {
return -1;
}
/* Extract the last argument. */
int i = find_string_start(reply, replylen-2);
if (i < 0) {
return -1;
}
reply[replylen - 2] = 0;
/* Now, the last argument may either be a timetoken or a channel list. */
if (reply[i-2] == '"') {
int k;
/* It is a channel list, there is another string argument in front
* of us. Process the channel list ... */
p->chan_ofs = i+1;
p->chan_end = replylen - 1;
for (k = p->chan_end - 1; k > p->chan_ofs; --k) {
if (reply[k] == ',') {
reply[k] = 0;
}
}
/* ... and look for timetoken again. */
reply[i-2] = 0;
i = find_string_start(reply, i-2);
if (i < 0) {
return -1;
}
}
else {
p->chan_ofs = 0;
p->chan_end = 0;
}
/* Now, i points at
* [[1,2,3],"5678"]
* [[1,2,3],"5678","a,b,c"]
* ^-- here */
/* Setup timetoken. */
if (replylen >= sizeof(p->timetoken) + 2 + (i+1)) {
return -1;
}
strcpy(p->timetoken, reply + i+1);
reply[i-2] = 0; // terminate the [] message array (before the ]!)
/* Set up the message list - offset, length and NUL-characters splitting
* the messages. */
p->msg_ofs = 2;
p->msg_end = i-2;
return split_array(reply + p->msg_ofs) ? 0 : -1;
}
int pbcc_parse_subscribe_response(struct pbcc_context *p)
{
int i;
int previous_i;
unsigned time_token_length;
char *reply = p->http_reply;
int replylen = p->http_buf_len;
if (replylen < 2) {
return -1;
}
if (reply[replylen-1] != ']' && replylen > 2) {
replylen -= 2; /* XXX: this seems required by Manxiang */
}
if ((reply[0] != '[') || (reply[replylen-1] != ']') || (reply[replylen-2] != '"')) {
return -1;
}
/* Extract the last argument. */
previous_i = replylen - 2;
i = find_string_start(reply, previous_i);
if (i < 0) {
return -1;
}
reply[replylen - 2] = 0;
/* Now, the last argument may either be a timetoken, a channel group list
or a channel list. */
if (reply[i-2] == '"') {
int k;
/* It is a channel list, there is another string argument in front
* of us. Process the channel list ... */
for (k = replylen - 2; k > i+1; --k) {
if (reply[k] == ',') {
reply[k] = '\0';
}
}
/* The previous argument is either a timetoken or a channel group
list. */
reply[i-2] = '\0';
p->chan_ofs = i+1;
p->chan_end = replylen - 1;
previous_i = i-2;
i = find_string_start(reply, previous_i);
if (i < 0) {
p->chan_ofs = 0;
p->chan_end = 0;
return -1;
}
if (reply[i-2] == '"') {
/* It is a channel group list. For now, we shall skip it. In
the future, we may process it like we do the channel list.
*/
reply[i-2] = '\0';
previous_i = i-2;
i = find_string_start(reply, previous_i);
if (i < 0) {
return -1;
}
}
}
else {
p->chan_ofs = 0;
p->chan_end = 0;
}
/* Now, `i` points to:
* [[1,2,3],"5678"]
* [[1,2,3],"5678","a,b,c"]
* [[1,2,3],"5678","gr-a,gr-b,gr-c","a,b,c"]
* ^-- here */
/* Setup timetoken. */
time_token_length = previous_i - (i+1);
if (time_token_length >= sizeof p->timetoken) {
p->timetoken[0] = '\0';
return -1;
}
memcpy(p->timetoken, reply + i+1, time_token_length+1);
/* terminate the [] message array (before the `]`!) */
reply[i-2] = 0;
/* Set up the message list - offset, length and NUL-characters
* splitting the messages. */
p->msg_ofs = 2;
p->msg_end = i-2;
return split_array(reply + p->msg_ofs) ? 0 : -1;
}
