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wininet: Improved non-blocking mode in secure NETCON_recv.

This commit is contained in:
Jacek Caban 2014-03-05 18:27:53 +01:00 committed by Alexandre Julliard
parent 0767e06044
commit d8948da1b4
1 changed files with 72 additions and 36 deletions
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108
dlls/wininet/netconnection.c
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@ -86,6 +86,11 @@
#define RESPONSE_TIMEOUT 30 /* FROM internet.c */
#ifdef MSG_DONTWAIT
#define WINE_MSG_DONTWAIT MSG_DONTWAIT
#else
#define WINE_MSG_DONTWAIT 0
#endif
WINE_DEFAULT_DEBUG_CHANNEL(wininet);
@ -755,37 +760,53 @@ DWORD NETCON_send(netconn_t *connection, const void *msg, size_t len, int flags,
}
}
static BOOL read_ssl_chunk(netconn_t *conn, void *buf, SIZE_T buf_size, SIZE_T *ret_size, BOOL *eof)
static BOOL read_ssl_chunk(netconn_t *conn, void *buf, SIZE_T buf_size, blocking_mode_t mode, SIZE_T *ret_size, BOOL *eof)
{
const SIZE_T ssl_buf_size = conn->ssl_sizes.cbHeader+conn->ssl_sizes.cbMaximumMessage+conn->ssl_sizes.cbTrailer;
SecBuffer bufs[4];
SecBufferDesc buf_desc = {SECBUFFER_VERSION, sizeof(bufs)/sizeof(*bufs), bufs};
SSIZE_T size, buf_len;
SSIZE_T size, buf_len = 0;
blocking_mode_t tmp_mode;
int i;
SECURITY_STATUS res;
assert(conn->extra_len < ssl_buf_size);
/* BLOCKING_WAITALL is handled by caller */
if(mode == BLOCKING_WAITALL)
mode = BLOCKING_ALLOW;
if(conn->extra_len) {
memcpy(conn->ssl_buf, conn->extra_buf, conn->extra_len);
buf_len = conn->extra_len;
conn->extra_len = 0;
heap_free(conn->extra_buf);
conn->extra_buf = NULL;
}else {
buf_len = recv(conn->socket, conn->ssl_buf+conn->extra_len, ssl_buf_size-conn->extra_len, 0);
if(buf_len < 0) {
WARN("recv failed\n");
return FALSE;
}
if(!buf_len) {
*eof = TRUE;
return TRUE;
}
}
*ret_size = 0;
tmp_mode = buf_len ? BLOCKING_DISALLOW : mode;
set_socket_blocking(conn->socket, tmp_mode);
size = recv(conn->socket, conn->ssl_buf+buf_len, ssl_buf_size-buf_len, tmp_mode == BLOCKING_ALLOW ? 0 : WINE_MSG_DONTWAIT);
if(size < 0) {
if(!buf_len) {
if(errno == EAGAIN || errno == EWOULDBLOCK) {
TRACE("would block\n");
return WSAEWOULDBLOCK;
}
WARN("recv failed\n");
return ERROR_INTERNET_CONNECTION_ABORTED;
}
}else {
buf_len += size;
}
*ret_size = buf_len;
if(!buf_len) {
*eof = TRUE;
return ERROR_SUCCESS;
}
*eof = FALSE;
do {
@ -801,19 +822,34 @@ static BOOL read_ssl_chunk(netconn_t *conn, void *buf, SIZE_T buf_size, SIZE_T *
case SEC_I_CONTEXT_EXPIRED:
TRACE("context expired\n");
*eof = TRUE;
return TRUE;
return ERROR_SUCCESS;
case SEC_E_INCOMPLETE_MESSAGE:
assert(buf_len < ssl_buf_size);
size = recv(conn->socket, conn->ssl_buf+buf_len, ssl_buf_size-buf_len, 0);
if(size < 1)
return FALSE;
set_socket_blocking(conn->socket, mode);
size = recv(conn->socket, conn->ssl_buf+buf_len, ssl_buf_size-buf_len, mode == BLOCKING_ALLOW ? 0 : WINE_MSG_DONTWAIT);
if(size < 1) {
if(size < 0 && (errno == EAGAIN || errno == EWOULDBLOCK)) {
TRACE("would block\n");
/* FIXME: Optimize extra_buf usage. */
conn->extra_buf = heap_alloc(buf_len);
if(!conn->extra_buf)
return ERROR_NOT_ENOUGH_MEMORY;
conn->extra_len = buf_len;
memcpy(conn->extra_buf, conn->ssl_buf, conn->extra_len);
return WSAEWOULDBLOCK;
}
return ERROR_INTERNET_CONNECTION_ABORTED;
}
buf_len += size;
continue;
default:
WARN("failed: %08x\n", res);
return FALSE;
return ERROR_INTERNET_CONNECTION_ABORTED;
}
} while(res != SEC_E_OK);
@ -825,7 +861,7 @@ static BOOL read_ssl_chunk(netconn_t *conn, void *buf, SIZE_T buf_size, SIZE_T *
assert(!conn->peek_len);
conn->peek_msg_mem = conn->peek_msg = heap_alloc(bufs[i].cbBuffer - size);
if(!conn->peek_msg)
return FALSE;
return ERROR_NOT_ENOUGH_MEMORY;
conn->peek_len = bufs[i].cbBuffer-size;
memcpy(conn->peek_msg, (char*)bufs[i].pvBuffer+size, conn->peek_len);
}
@ -838,14 +874,14 @@ static BOOL read_ssl_chunk(netconn_t *conn, void *buf, SIZE_T buf_size, SIZE_T *
if(bufs[i].BufferType == SECBUFFER_EXTRA) {
conn->extra_buf = heap_alloc(bufs[i].cbBuffer);
if(!conn->extra_buf)
return FALSE;
return ERROR_NOT_ENOUGH_MEMORY;
conn->extra_len = bufs[i].cbBuffer;
memcpy(conn->extra_buf, bufs[i].pvBuffer, conn->extra_len);
}
}
return TRUE;
return ERROR_SUCCESS;
}
/******************************************************************************
@ -867,9 +903,7 @@ DWORD NETCON_recv(netconn_t *connection, void *buf, size_t len, blocking_mode_t
case BLOCKING_ALLOW:
break;
case BLOCKING_DISALLOW:
#ifdef MSG_DONTWAIT
flags = MSG_DONTWAIT;
#endif
flags = WINE_MSG_DONTWAIT;
break;
case BLOCKING_WAITALL:
flags = MSG_WAITALL;
@ -883,7 +917,8 @@ DWORD NETCON_recv(netconn_t *connection, void *buf, size_t len, blocking_mode_t
else
{
SIZE_T size = 0, cread;
BOOL res, eof;
BOOL eof;
DWORD res;
if(connection->peek_msg) {
size = min(len, connection->peek_len);
@ -900,18 +935,19 @@ DWORD NETCON_recv(netconn_t *connection, void *buf, size_t len, blocking_mode_t
*recvd = size;
return ERROR_SUCCESS;
}
mode = BLOCKING_DISALLOW;
}
if(mode == BLOCKING_DISALLOW)
return WSAEWOULDBLOCK; /* FIXME: We can do better */
set_socket_blocking(connection->socket, BLOCKING_ALLOW);
do {
res = read_ssl_chunk(connection, (BYTE*)buf+size, len-size, &cread, &eof);
if(!res) {
WARN("read_ssl_chunk failed\n");
if(!size)
return ERROR_INTERNET_CONNECTION_ABORTED;
res = read_ssl_chunk(connection, (BYTE*)buf+size, len-size, mode, &cread, &eof);
if(res != ERROR_SUCCESS) {
if(res == WSAEWOULDBLOCK) {
if(size)
res = ERROR_SUCCESS;
}else {
WARN("read_ssl_chunk failed\n");
}
break;
}
@ -925,7 +961,7 @@ DWORD NETCON_recv(netconn_t *connection, void *buf, size_t len, blocking_mode_t
TRACE("received %ld bytes\n", size);
*recvd = size;
return ERROR_SUCCESS;
return res;
}
}