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Allow registering callback for parsing HTTP headers

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Slightly changed version of Espen Jürgensen's
commit 548141e72312126fa6121f6a5f436đ251c7fb1251 for forked-daapd.
This commit is contained in:
Balint Reczey 2013-11-18 16:06:16 +01:00
parent 8d8decf114
commit b0bd7fe1db
3 changed files with 32 additions and 0 deletions
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15
http.c
View File

@ -2150,6 +2150,14 @@ evhttp_read_header(struct evhttp_connection *evcon,
/* Disable reading for now */
bufferevent_disable(evcon->bufev, EV_READ);
/* Callback can shut down connection with negative return value */
if (req->header_cb != NULL) {
if ((*req->header_cb)(req, req->cb_arg) < 0) {
evhttp_connection_fail_(evcon, EVREQ_HTTP_EOF);
return;
}
}
/* Done reading headers, do the real work */
switch (req->kind) {
case EVHTTP_REQUEST:
@ -3818,6 +3826,13 @@ evhttp_request_set_chunked_cb(struct evhttp_request *req,
req->chunk_cb = cb;
}
void
evhttp_request_set_header_cb(struct evhttp_request *req,
int (*cb)(struct evhttp_request *, void *))
{
req->header_cb = cb;
}
void
evhttp_request_set_error_cb(struct evhttp_request *req,
void (*cb)(enum evhttp_request_error, void *))

9
include/event2/http.h
View File

@ -504,6 +504,15 @@ struct evhttp_request *evhttp_request_new(
void evhttp_request_set_chunked_cb(struct evhttp_request *,
void (*cb)(struct evhttp_request *, void *));
/**
* Register callback for additional parsing of request headers.
* @param cb will be called after receiving and parsing the full header.
* It allows analyzing the header and possibly closing the connection
* by returning a value < 0.
*/
void evhttp_request_set_header_cb(struct evhttp_request *,
int (*cb)(struct evhttp_request *, void *));
/**
* The different error types supported by evhttp
*

8
include/event2/http_struct.h
View File

@ -120,6 +120,14 @@ struct {
* the regular callback.
*/
void (*chunk_cb)(struct evhttp_request *, void *);
/*
* Callback added for forked-daapd so they can collect ICY
* (shoutcast) metadata from the http header. If return
* int is negative the connection will be closed.
*/
int (*header_cb)(struct evhttp_request *, void *);
/*
* Error callback - called when error is occured.
* @see evhttp_request_error for error types.