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fix-user-pointer-bug.patch

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Signed-off-by: Andy Green <andy@warmcat.com>
This commit is contained in:
Andy Green 2010-11-12 11:15:49 +00:00
parent 05464c6b7b
commit 47943ae82d
4 changed files with 23 additions and 9 deletions
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11
lib/handshake.c
View file

@ -96,7 +96,7 @@ libwebsocket_read(struct libwebsocket *wsi, unsigned char * buf, size_t len)
!wsi->utf8_token[WSI_TOKEN_CONNECTION].token_len) {
if (wsi->protocol->callback)
(wsi->protocol->callback)(wsi, LWS_CALLBACK_HTTP,
&wsi->user_space,
wsi->user_space,
wsi->utf8_token[WSI_TOKEN_GET_URI].token, 0);
wsi->state = WSI_STATE_HTTP;
return 0;
@ -145,6 +145,9 @@ libwebsocket_read(struct libwebsocket *wsi, unsigned char * buf, size_t len)
wsi->protocol++;
}
/* we didn't find a protocol he wanted? */
if (wsi->protocol->callback == NULL) {
if (wsi->utf8_token[WSI_TOKEN_PROTOCOL].token == NULL)
fprintf(stderr, "[no protocol] "
@ -166,7 +169,9 @@ libwebsocket_read(struct libwebsocket *wsi, unsigned char * buf, size_t len)
"conn user space\n");
goto bail;
}
}
fprintf(stderr, "user allocated %d at %p for wsi %p\n", wsi->protocol->per_session_data_size, wsi->user_space, wsi);
} else
wsi->user_space = NULL;
/* create the response packet */
@ -275,7 +280,7 @@ libwebsocket_read(struct libwebsocket *wsi, unsigned char * buf, size_t len)
if (wsi->protocol->callback)
wsi->protocol->callback(wsi, LWS_CALLBACK_ESTABLISHED,
&wsi->user_space, NULL, 0);
wsi->user_space, NULL, 0);
break;
case WSI_STATE_ESTABLISHED:

4
lib/libwebsockets.c
View file

@ -82,7 +82,7 @@ libwebsocket_close_and_free_session(struct libwebsocket *wsi)
wsi->state = WSI_STATE_DEAD_SOCKET;
if (wsi->protocol->callback && n == WSI_STATE_ESTABLISHED)
wsi->protocol->callback(wsi, LWS_CALLBACK_CLOSED, &wsi->user_space,
wsi->protocol->callback(wsi, LWS_CALLBACK_CLOSED, wsi->user_space,
NULL, 0);
for (n = 0; n < WSI_TOKEN_COUNT; n++)
@ -444,7 +444,7 @@ poll_out:
continue;
wsi[client]->protocol->callback(wsi[client], LWS_CALLBACK_SEND,
&wsi[client]->user_space, NULL, 0);
wsi[client]->user_space, NULL, 0);
}
continue;

2
lib/parsers.c
View file

@ -212,7 +212,7 @@ static int libwebsocket_rx_sm(struct libwebsocket *wsi, unsigned char c)
issue:
if (wsi->protocol->callback)
wsi->protocol->callback(wsi, LWS_CALLBACK_RECEIVE,
&wsi->user_space,
wsi->user_space,
&wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING],
wsi->rx_user_buffer_head);
wsi->rx_user_buffer_head = 0;

15
libwebsockets-api-doc.html
View file

@ -93,14 +93,23 @@ else ignored
</dl>
<h3>Description</h3>
<blockquote>
This function forks to create the listening socket and takes care
This function creates the listening socket and takes care
of all initialization in one step.
<p>
The callback function is called for a handful of events including
http requests coming in, websocket connections becoming
It does not return since it sits in a service loop and operates via the
callbacks given in <tt><b>protocol</b></tt>. User code should fork before calling
<b>libwebsocket_create_server</b> if it wants to do other things in
parallel other than serve websockets.
<p>
The protocol callback functions are called for a handful of events
including http requests coming in, websocket connections becoming
established, and data arriving; it's also called periodically to allow
async transmission.
<p>
HTTP requests are sent always to the FIRST protocol in <tt><b>protocol</b></tt>, since
at that time websocket protocol has not been negotiated. Other
protocols after the first one never see any HTTP callack activity.
<p>
The server created is a simple http server by default; part of the
websocket standard is upgrading this http connection to a websocket one.
<p>