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winhttp: Always drain content before sending the next request. 

Signed-off-by: Hans Leidekker <hans@codeweavers.com>
Signed-off-by: Alistair Leslie-Hughes <leslie_alistair@hotmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Hans Leidekker 2017-04-12 10:46:35 +02:00 committed by Alexandre Julliard
parent ae4ad49c75
commit 2fa86fd661
2 changed files with 203 additions and 205 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

402
dlls/winhttp/request.c
View File

@ -1113,6 +1113,205 @@ static void clear_response_headers( request_t *request )
} }
} }
/* remove some amount of data from the read buffer */
static void remove_data( request_t *request, int count )
{
if (!(request->read_size -= count)) request->read_pos = 0;
else request->read_pos += count;
}
/* read some more data into the read buffer */
static BOOL read_more_data( request_t *request, int maxlen, BOOL notify )
{
int len;
BOOL ret;
if (request->read_chunked_eof) return FALSE;
if (request->read_size && request->read_pos)
{
/* move existing data to the start of the buffer */
memmove( request->read_buf, request->read_buf + request->read_pos, request->read_size );
request->read_pos = 0;
}
if (maxlen == -1) maxlen = sizeof(request->read_buf);
if (notify) send_callback( &request->hdr, WINHTTP_CALLBACK_STATUS_RECEIVING_RESPONSE, NULL, 0 );
ret = netconn_recv( &request->netconn, request->read_buf + request->read_size,
maxlen - request->read_size, 0, &len );
if (notify) send_callback( &request->hdr, WINHTTP_CALLBACK_STATUS_RESPONSE_RECEIVED, &len, sizeof(len) );
request->read_size += len;
return ret;
}
/* discard data contents until we reach end of line */
static BOOL discard_eol( request_t *request, BOOL notify )
{
do
{
char *eol = memchr( request->read_buf + request->read_pos, '\n', request->read_size );
if (eol)
{
remove_data( request, (eol + 1) - (request->read_buf + request->read_pos) );
break;
}
request->read_pos = request->read_size = 0; /* discard everything */
if (!read_more_data( request, -1, notify )) return FALSE;
} while (request->read_size);
return TRUE;
}
/* read the size of the next chunk */
static BOOL start_next_chunk( request_t *request, BOOL notify )
{
DWORD chunk_size = 0;
assert(!request->read_chunked_size || request->read_chunked_size == ~0u);
if (request->read_chunked_eof) return FALSE;
/* read terminator for the previous chunk */
if (!request->read_chunked_size && !discard_eol( request, notify )) return FALSE;
for (;;)
{
while (request->read_size)
{
char ch = request->read_buf[request->read_pos];
if (ch >= '0' && ch <= '9') chunk_size = chunk_size * 16 + ch - '0';
else if (ch >= 'a' && ch <= 'f') chunk_size = chunk_size * 16 + ch - 'a' + 10;
else if (ch >= 'A' && ch <= 'F') chunk_size = chunk_size * 16 + ch - 'A' + 10;
else if (ch == ';' || ch == '\r' || ch == '\n')
{
TRACE("reading %u byte chunk\n", chunk_size);
if (request->content_length == ~0u) request->content_length = chunk_size;
else request->content_length += chunk_size;
request->read_chunked_size = chunk_size;
if (!chunk_size) request->read_chunked_eof = TRUE;
return discard_eol( request, notify );
}
remove_data( request, 1 );
}
if (!read_more_data( request, -1, notify )) return FALSE;
if (!request->read_size)
{
request->content_length = request->content_read = 0;
request->read_chunked_size = 0;
return TRUE;
}
}
}
static BOOL refill_buffer( request_t *request, BOOL notify )
{
int len = sizeof(request->read_buf);
if (request->read_chunked)
{
if (request->read_chunked_eof) return FALSE;
if (request->read_chunked_size == ~0u || !request->read_chunked_size)
{
if (!start_next_chunk( request, notify )) return FALSE;
}
len = min( len, request->read_chunked_size );
}
else if (request->content_length != ~0u)
{
len = min( len, request->content_length - request->content_read );
}
if (len <= request->read_size) return TRUE;
if (!read_more_data( request, len, notify )) return FALSE;
if (!request->read_size) request->content_length = request->content_read = 0;
return TRUE;
}
static void finished_reading( request_t *request )
{
static const WCHAR closeW[] = {'c','l','o','s','e',0};
BOOL close = FALSE;
WCHAR connection[20];
DWORD size = sizeof(connection);
if (request->hdr.disable_flags & WINHTTP_DISABLE_KEEP_ALIVE) close = TRUE;
else if (query_headers( request, WINHTTP_QUERY_CONNECTION, NULL, connection, &size, NULL ) ||
query_headers( request, WINHTTP_QUERY_PROXY_CONNECTION, NULL, connection, &size, NULL ))
{
if (!strcmpiW( connection, closeW )) close = TRUE;
}
else if (!strcmpW( request->version, http1_0 )) close = TRUE;
if (close) close_connection( request );
}
/* return the size of data available to be read immediately */
static DWORD get_available_data( request_t *request )
{
if (request->read_chunked) return min( request->read_chunked_size, request->read_size );
return request->read_size;
}
/* check if we have reached the end of the data to read */
static BOOL end_of_read_data( request_t *request )
{
if (!request->content_length) return TRUE;
if (request->read_chunked) return request->read_chunked_eof;
if (request->content_length == ~0u) return FALSE;
return (request->content_length == request->content_read);
}
static BOOL read_data( request_t *request, void *buffer, DWORD size, DWORD *read, BOOL async )
{
int count, bytes_read = 0;
if (end_of_read_data( request )) goto done;
while (size)
{
if (!(count = get_available_data( request )))
{
if (!refill_buffer( request, async )) goto done;
if (!(count = get_available_data( request ))) goto done;
}
count = min( count, size );
memcpy( (char *)buffer + bytes_read, request->read_buf + request->read_pos, count );
remove_data( request, count );
if (request->read_chunked) request->read_chunked_size -= count;
size -= count;
bytes_read += count;
request->content_read += count;
if (end_of_read_data( request )) goto done;
}
if (request->read_chunked && !request->read_chunked_size) refill_buffer( request, async );
done:
TRACE( "retrieved %u bytes (%u/%u)\n", bytes_read, request->content_read, request->content_length );
if (async) send_callback( &request->hdr, WINHTTP_CALLBACK_STATUS_READ_COMPLETE, buffer, bytes_read );
if (read) *read = bytes_read;
if (end_of_read_data( request )) finished_reading( request );
return TRUE;
}
/* read any content returned by the server so that the connection can be reused */
static void drain_content( request_t *request )
{
DWORD bytes_read;
char buffer[2048];
refill_buffer( request, FALSE );
for (;;)
{
if (!read_data( request, buffer, sizeof(buffer), &bytes_read, FALSE ) || !bytes_read) return;
}
}
static BOOL send_request( request_t *request, LPCWSTR headers, DWORD headers_len, LPVOID optional, static BOOL send_request( request_t *request, LPCWSTR headers, DWORD headers_len, LPVOID optional,
DWORD optional_len, DWORD total_len, DWORD_PTR context, BOOL async ) DWORD optional_len, DWORD total_len, DWORD_PTR context, BOOL async )
{ {
@ -1129,6 +1328,7 @@ static BOOL send_request( request_t *request, LPCWSTR headers, DWORD headers_len
DWORD len, i, flags; DWORD len, i, flags;
clear_response_headers( request ); clear_response_headers( request );
drain_content( request );
flags = WINHTTP_ADDREQ_FLAG_ADD|WINHTTP_ADDREQ_FLAG_COALESCE_WITH_COMMA; flags = WINHTTP_ADDREQ_FLAG_ADD|WINHTTP_ADDREQ_FLAG_COALESCE_WITH_COMMA;
for (i = 0; i < request->num_accept_types; i++) for (i = 0; i < request->num_accept_types; i++)
@ -1909,40 +2109,6 @@ static DWORD set_content_length( request_t *request, DWORD status )
return request->content_length; return request->content_length;
} }
/* read some more data into the read buffer */
static BOOL read_more_data( request_t *request, int maxlen, BOOL notify )
{
int len;
BOOL ret;
if (request->read_chunked_eof) return FALSE;
if (request->read_size && request->read_pos)
{
/* move existing data to the start of the buffer */
memmove( request->read_buf, request->read_buf + request->read_pos, request->read_size );
request->read_pos = 0;
}
if (maxlen == -1) maxlen = sizeof(request->read_buf);
if (notify) send_callback( &request->hdr, WINHTTP_CALLBACK_STATUS_RECEIVING_RESPONSE, NULL, 0 );
ret = netconn_recv( &request->netconn, request->read_buf + request->read_size,
maxlen - request->read_size, 0, &len );
if (notify) send_callback( &request->hdr, WINHTTP_CALLBACK_STATUS_RESPONSE_RECEIVED, &len, sizeof(len) );
request->read_size += len;
return ret;
}
/* remove some amount of data from the read buffer */
static void remove_data( request_t *request, int count )
{
if (!(request->read_size -= count)) request->read_pos = 0;
else request->read_pos += count;
}
static BOOL read_line( request_t *request, char *buffer, DWORD *len ) static BOOL read_line( request_t *request, char *buffer, DWORD *len )
{ {
int count, bytes_read, pos = 0; int count, bytes_read, pos = 0;
@ -1981,107 +2147,6 @@ static BOOL read_line( request_t *request, char *buffer, DWORD *len )
return TRUE; return TRUE;
} }
/* discard data contents until we reach end of line */
static BOOL discard_eol( request_t *request, BOOL notify )
{
do
{
char *eol = memchr( request->read_buf + request->read_pos, '\n', request->read_size );
if (eol)
{
remove_data( request, (eol + 1) - (request->read_buf + request->read_pos) );
break;
}
request->read_pos = request->read_size = 0; /* discard everything */
if (!read_more_data( request, -1, notify )) return FALSE;
} while (request->read_size);
return TRUE;
}
/* read the size of the next chunk */
static BOOL start_next_chunk( request_t *request, BOOL notify )
{
DWORD chunk_size = 0;
assert(!request->read_chunked_size || request->read_chunked_size == ~0u);
if (request->read_chunked_eof) return FALSE;
/* read terminator for the previous chunk */
if (!request->read_chunked_size && !discard_eol( request, notify )) return FALSE;
for (;;)
{
while (request->read_size)
{
char ch = request->read_buf[request->read_pos];
if (ch >= '0' && ch <= '9') chunk_size = chunk_size * 16 + ch - '0';
else if (ch >= 'a' && ch <= 'f') chunk_size = chunk_size * 16 + ch - 'a' + 10;
else if (ch >= 'A' && ch <= 'F') chunk_size = chunk_size * 16 + ch - 'A' + 10;
else if (ch == ';' || ch == '\r' || ch == '\n')
{
TRACE("reading %u byte chunk\n", chunk_size);
if (request->content_length == ~0u) request->content_length = chunk_size;
else request->content_length += chunk_size;
request->read_chunked_size = chunk_size;
if (!chunk_size) request->read_chunked_eof = TRUE;
return discard_eol( request, notify );
}
remove_data( request, 1 );
}
if (!read_more_data( request, -1, notify )) return FALSE;
if (!request->read_size)
{
request->content_length = request->content_read = 0;
request->read_chunked_size = 0;
return TRUE;
}
}
}
/* return the size of data available to be read immediately */
static DWORD get_available_data( request_t *request )
{
if (request->read_chunked) return min( request->read_chunked_size, request->read_size );
return request->read_size;
}
/* check if we have reached the end of the data to read */
static BOOL end_of_read_data( request_t *request )
{
if (!request->content_length) return TRUE;
if (request->read_chunked) return request->read_chunked_eof;
if (request->content_length == ~0u) return FALSE;
return (request->content_length == request->content_read);
}
static BOOL refill_buffer( request_t *request, BOOL notify )
{
int len = sizeof(request->read_buf);
if (request->read_chunked)
{
if (request->read_chunked_eof) return FALSE;
if (request->read_chunked_size == ~0u || !request->read_chunked_size)
{
if (!start_next_chunk( request, notify )) return FALSE;
}
len = min( len, request->read_chunked_size );
}
else if (request->content_length != ~0u)
{
len = min( len, request->content_length - request->content_read );
}
if (len <= request->read_size) return TRUE;
if (!read_more_data( request, len, notify )) return FALSE;
if (!request->read_size) request->content_length = request->content_read = 0;
return TRUE;
}
#define MAX_REPLY_LEN 1460 #define MAX_REPLY_LEN 1460
#define INITIAL_HEADER_BUFFER_LEN 512 #define INITIAL_HEADER_BUFFER_LEN 512
@ -2184,70 +2249,6 @@ static BOOL read_reply( request_t *request )
return TRUE; return TRUE;
} }
static void finished_reading( request_t *request )
{
static const WCHAR closeW[] = {'c','l','o','s','e',0};
BOOL close = FALSE;
WCHAR connection[20];
DWORD size = sizeof(connection);
if (request->hdr.disable_flags & WINHTTP_DISABLE_KEEP_ALIVE) close = TRUE;
else if (query_headers( request, WINHTTP_QUERY_CONNECTION, NULL, connection, &size, NULL ) ||
query_headers( request, WINHTTP_QUERY_PROXY_CONNECTION, NULL, connection, &size, NULL ))
{
if (!strcmpiW( connection, closeW )) close = TRUE;
}
else if (!strcmpW( request->version, http1_0 )) close = TRUE;
if (close) close_connection( request );
}
static BOOL read_data( request_t *request, void *buffer, DWORD size, DWORD *read, BOOL async )
{
int count, bytes_read = 0;
if (end_of_read_data( request )) goto done;
while (size)
{
if (!(count = get_available_data( request )))
{
if (!refill_buffer( request, async )) goto done;
if (!(count = get_available_data( request ))) goto done;
}
count = min( count, size );
memcpy( (char *)buffer + bytes_read, request->read_buf + request->read_pos, count );
remove_data( request, count );
if (request->read_chunked) request->read_chunked_size -= count;
size -= count;
bytes_read += count;
request->content_read += count;
if (end_of_read_data( request )) goto done;
}
if (request->read_chunked && !request->read_chunked_size) refill_buffer( request, async );
done:
TRACE( "retrieved %u bytes (%u/%u)\n", bytes_read, request->content_read, request->content_length );
if (async) send_callback( &request->hdr, WINHTTP_CALLBACK_STATUS_READ_COMPLETE, buffer, bytes_read );
if (read) *read = bytes_read;
if (end_of_read_data( request )) finished_reading( request );
return TRUE;
}
/* read any content returned by the server so that the connection can be reused */
static void drain_content( request_t *request )
{
DWORD bytes_read;
char buffer[2048];
refill_buffer( request, FALSE );
for (;;)
{
if (!read_data( request, buffer, sizeof(buffer), &bytes_read, FALSE ) || !bytes_read) return;
}
}
static void record_cookies( request_t *request ) static void record_cookies( request_t *request )
{ {
unsigned int i; unsigned int i;
@ -2314,7 +2315,6 @@ static BOOL handle_redirect( request_t *request, DWORD status )
heap_free( request->path ); heap_free( request->path );
request->path = path; request->path = path;
drain_content( request );
send_callback( &request->hdr, WINHTTP_CALLBACK_STATUS_REDIRECT, location, len_url + 1 ); send_callback( &request->hdr, WINHTTP_CALLBACK_STATUS_REDIRECT, location, len_url + 1 );
} }
else else
@ -2331,7 +2331,6 @@ static BOOL handle_redirect( request_t *request, DWORD status )
request->hdr.flags |= WINHTTP_FLAG_SECURE; request->hdr.flags |= WINHTTP_FLAG_SECURE;
} }
drain_content( request );
send_callback( &request->hdr, WINHTTP_CALLBACK_STATUS_REDIRECT, location, len_url + 1 ); send_callback( &request->hdr, WINHTTP_CALLBACK_STATUS_REDIRECT, location, len_url + 1 );
len = uc.dwHostNameLength; len = uc.dwHostNameLength;
@ -2422,7 +2421,6 @@ static BOOL receive_response( request_t *request, BOOL async )
if (request->hdr.disable_flags & WINHTTP_DISABLE_AUTHENTICATION) break; if (request->hdr.disable_flags & WINHTTP_DISABLE_AUTHENTICATION) break;
if (!handle_authorization( request, status )) break; if (!handle_authorization( request, status )) break;
drain_content( request );
/* recurse synchronously */ /* recurse synchronously */
if ((ret = send_request( request, NULL, 0, request->optional, request->optional_len, 0, 0, FALSE ))) continue; if ((ret = send_request( request, NULL, 0, request->optional, request->optional_len, 0, 0, FALSE ))) continue;

6
dlls/winhttp/tests/winhttp.c
View File

@ -2612,13 +2612,13 @@ static void test_large_data_authentication(int port)
ok(ret, "expected success %d\n", GetLastError()); ok(ret, "expected success %d\n", GetLastError());
ret = WinHttpReceiveResponse(req, NULL); ret = WinHttpReceiveResponse(req, NULL);
todo_wine ok(ret, "expected success\n"); ok(ret, "expected success\n");
size = sizeof(status); size = sizeof(status);
ret = WinHttpQueryHeaders(req, WINHTTP_QUERY_STATUS_CODE | WINHTTP_QUERY_FLAG_NUMBER, NULL, ret = WinHttpQueryHeaders(req, WINHTTP_QUERY_STATUS_CODE | WINHTTP_QUERY_FLAG_NUMBER, NULL,
&status, &size, NULL); &status, &size, NULL);
todo_wine ok(ret, "expected success\n"); ok(ret, "expected success\n");
todo_wine ok(status == HTTP_STATUS_OK, "got %d\n", status); ok(status == HTTP_STATUS_OK, "got %d\n", status);
WinHttpCloseHandle(req); WinHttpCloseHandle(req);
WinHttpCloseHandle(con); WinHttpCloseHandle(con);