int WebSocketHandshake::readServerHandshake(const char* header, size_t len)
{
m_mode = Incomplete;
int statusCode;
String statusText;
int lineLength = readStatusLine(header, len, statusCode, statusText);
if (lineLength == -1)
return -1;
if (statusCode == -1) {
m_mode = Failed; // m_failureReason is set inside readStatusLine().
return len;
}
LOG(Network, "response code: %d", statusCode);
m_response.setStatusCode(statusCode);
m_response.setStatusText(statusText);
if (statusCode != 101) {
m_mode = Failed;
m_failureReason = "Unexpected response code: " + String::number(statusCode);
return len;
}
m_mode = Normal;
if (!strnstr(header, "\r\n\r\n", len)) {
// Just hasn't been received fully yet.
m_mode = Incomplete;
return -1;
}
const char* p = readHTTPHeaders(header + lineLength, header + len);
if (!p) {
LOG(Network, "readHTTPHeaders failed");
m_mode = Failed; // m_failureReason is set inside readHTTPHeaders().
return len;
}
if (!checkResponseHeaders()) {
LOG(Network, "header process failed");
m_mode = Failed;
return p - header;
}
if (!m_useHixie76Protocol) { // Hybi-10 handshake is complete at this point.
m_mode = Connected;
return p - header;
}
// In hixie-76 protocol, server's handshake contains sixteen-byte data (called "challenge response")
// after the header fields.
if (len < static_cast<size_t>(p - header + sizeof(m_hixie76ExpectedChallengeResponse))) {
// Just hasn't been received /expected/ yet.
m_mode = Incomplete;
return -1;
}
m_response.setChallengeResponse(static_cast<const unsigned char*>(static_cast<const void*>(p)));
if (memcmp(p, m_hixie76ExpectedChallengeResponse, sizeof(m_hixie76ExpectedChallengeResponse))) {
m_mode = Failed;
return (p - header) + sizeof(m_hixie76ExpectedChallengeResponse);
}
m_mode = Connected;
return (p - header) + sizeof(m_hixie76ExpectedChallengeResponse);
}
int WebSocketHandshake::readServerHandshake(const char* header, size_t len)
{
m_mode = Incomplete;
int statusCode;
String statusText;
int lineLength = readStatusLine(header, len, statusCode, statusText);
if (lineLength == -1)
return -1;
if (statusCode == -1) {
m_mode = Failed;
return len;
}
LOG(Network, "response code: %d", statusCode);
m_response.setStatusCode(statusCode);
m_response.setStatusText(statusText);
if (statusCode != 101) {
m_mode = Failed;
m_context->addMessage(JSMessageSource, LogMessageType, ErrorMessageLevel, "Unexpected response code: " + String::number(statusCode), 0, clientOrigin(), 0);
return len;
}
m_mode = Normal;
if (!strnstr(header, "\r\n\r\n", len)) {
// Just hasn't been received fully yet.
m_mode = Incomplete;
return -1;
}
const char* p = readHTTPHeaders(header + lineLength, header + len);
if (!p) {
LOG(Network, "readHTTPHeaders failed");
m_mode = Failed;
return len;
}
if (!checkResponseHeaders()) {
LOG(Network, "header process failed");
m_mode = Failed;
return p - header;
}
if (len < static_cast<size_t>(p - header + sizeof(m_expectedChallengeResponse))) {
// Just hasn't been received /expected/ yet.
m_mode = Incomplete;
return -1;
}
m_response.setChallengeResponse(static_cast<const unsigned char*>(static_cast<const void*>(p)));
if (memcmp(p, m_expectedChallengeResponse, sizeof(m_expectedChallengeResponse))) {
m_mode = Failed;
return (p - header) + sizeof(m_expectedChallengeResponse);
}
m_mode = Connected;
return (p - header) + sizeof(m_expectedChallengeResponse);
}
int WebSocketHandshake::readServerHandshake(const char* header, size_t len)
{
m_mode = Incomplete;
int statusCode;
String statusText;
int lineLength = readStatusLine(header, len, statusCode, statusText);
if (lineLength == -1)
return -1;
if (statusCode == -1) {
m_mode = Failed; // m_failureReason is set inside readStatusLine().
return len;
}
LOG(Network, "WebSocketHandshake %p readServerHandshake() Status code is %d", this, statusCode);
m_serverHandshakeResponse = ResourceResponse();
m_serverHandshakeResponse.setHTTPStatusCode(statusCode);
m_serverHandshakeResponse.setHTTPStatusText(statusText);
if (statusCode != 101) {
m_mode = Failed;
m_failureReason = "Unexpected response code: " + String::number(statusCode);
return len;
}
m_mode = Normal;
if (!strnstr(header, "\r\n\r\n", len)) {
// Just hasn't been received fully yet.
m_mode = Incomplete;
return -1;
}
const char* p = readHTTPHeaders(header + lineLength, header + len);
if (!p) {
LOG(Network, "WebSocketHandshake %p readServerHandshake() readHTTPHeaders() failed", this);
m_mode = Failed; // m_failureReason is set inside readHTTPHeaders().
return len;
}
if (!checkResponseHeaders()) {
LOG(Network, "WebSocketHandshake %p readServerHandshake() checkResponseHeaders() failed", this);
m_mode = Failed;
return p - header;
}
m_mode = Connected;
return p - header;
}
int WebSocketHandshake::readServerHandshake(const char* header, size_t len)
{
m_mode = Incomplete;
if (len < sizeof(webSocketServerHandshakeHeader) - 1) {
// Just hasn't been received fully yet.
return -1;
}
if (!memcmp(header, webSocketServerHandshakeHeader, sizeof(webSocketServerHandshakeHeader) - 1))
m_mode = Normal;
else {
const String& code = extractResponseCode(header, len);
if (code.isNull()) {
m_context->addMessage(ConsoleDestination, JSMessageSource, LogMessageType, ErrorMessageLevel, "Short server handshake: " + String(header, len), 0, clientOrigin());
return -1;
}
if (code.isEmpty()) {
m_mode = Failed;
m_context->addMessage(ConsoleDestination, JSMessageSource, LogMessageType, ErrorMessageLevel, "No response code found: " + String(header, len), 0, clientOrigin());
return len;
}
LOG(Network, "response code: %s", code.utf8().data());
if (code == "401") {
m_mode = Failed;
m_context->addMessage(ConsoleDestination, JSMessageSource, LogMessageType, ErrorMessageLevel, "Authentication required, but not implemented yet.", 0, clientOrigin());
return len;
} else {
m_mode = Failed;
m_context->addMessage(ConsoleDestination, JSMessageSource, LogMessageType, ErrorMessageLevel, "Unexpected response code:" + code, 0, clientOrigin());
return len;
}
}
const char* p = header + sizeof(webSocketServerHandshakeHeader) - 1;
const char* end = header + len + 1;
if (m_mode == Normal) {
size_t headerSize = end - p;
if (headerSize < sizeof(webSocketUpgradeHeader) - 1) {
m_mode = Incomplete;
return 0;
}
if (memcmp(p, webSocketUpgradeHeader, sizeof(webSocketUpgradeHeader) - 1)) {
m_mode = Failed;
m_context->addMessage(ConsoleDestination, JSMessageSource, LogMessageType, ErrorMessageLevel, "Bad Upgrade header: " + String(p, end - p), 0, clientOrigin());
return p - header + sizeof(webSocketUpgradeHeader) - 1;
}
p += sizeof(webSocketUpgradeHeader) - 1;
headerSize = end - p;
if (headerSize < sizeof(webSocketConnectionHeader) - 1) {
m_mode = Incomplete;
return -1;
}
if (memcmp(p, webSocketConnectionHeader, sizeof(webSocketConnectionHeader) - 1)) {
m_mode = Failed;
m_context->addMessage(ConsoleDestination, JSMessageSource, LogMessageType, ErrorMessageLevel, "Bad Connection header: " + String(p, end - p), 0, clientOrigin());
return p - header + sizeof(webSocketConnectionHeader) - 1;
}
p += sizeof(webSocketConnectionHeader) - 1;
}
if (!strnstr(p, "\r\n\r\n", end - p)) {
// Just hasn't been received fully yet.
m_mode = Incomplete;
return -1;
}
HTTPHeaderMap headers;
p = readHTTPHeaders(p, end, &headers);
if (!p) {
LOG(Network, "readHTTPHeaders failed");
m_mode = Failed;
return len;
}
if (!processHeaders(headers)) {
LOG(Network, "header process failed");
m_mode = Failed;
return p - header;
}
switch (m_mode) {
case Normal:
checkResponseHeaders();
break;
default:
m_mode = Failed;
break;
}
return p - header;
}