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authorLuca Muscariello <lumuscar+fdio@cisco.com>2017-02-25 23:42:31 +0100
committerLuca Muscariello <lumuscar+fdio@cisco.com>2017-02-25 23:42:31 +0100
commit05c1a838c881ea502888659848d8792843b28718 (patch)
treecf0b05b58bd725a1eb6c80325ba986c63dea42aa /websocketpp/processors/base.hpp
parent9b30fc10fb1cbebe651e5a107e8ca5b24de54675 (diff)
Initial commit: video player - viper
Change-Id: Id5aa33598ce34659bad4a7a9ae5006bfb84f9bd1 Signed-off-by: Luca Muscariello <lumuscar+fdio@cisco.com>
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+/*
+ * Copyright (c) 2014, Peter Thorson. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of the WebSocket++ Project nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL PETER THORSON BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef WEBSOCKETPP_PROCESSOR_BASE_HPP
+#define WEBSOCKETPP_PROCESSOR_BASE_HPP
+
+#include <websocketpp/close.hpp>
+#include <websocketpp/utilities.hpp>
+#include <websocketpp/uri.hpp>
+
+#include <websocketpp/common/cpp11.hpp>
+#include <websocketpp/common/system_error.hpp>
+
+#include <string>
+
+namespace websocketpp {
+namespace processor {
+
+/// Constants related to processing WebSocket connections
+namespace constants {
+
+static char const upgrade_token[] = "websocket";
+static char const connection_token[] = "upgrade";
+static char const handshake_guid[] = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
+
+} // namespace constants
+
+
+/// Processor class related error codes
+namespace error_cat {
+enum value {
+ BAD_REQUEST = 0, // Error was the result of improperly formatted user input
+ INTERNAL_ERROR = 1, // Error was a logic error internal to WebSocket++
+ PROTOCOL_VIOLATION = 2,
+ MESSAGE_TOO_BIG = 3,
+ PAYLOAD_VIOLATION = 4 // Error was due to receiving invalid payload data
+};
+} // namespace error_cat
+
+/// Error code category and codes used by all processor types
+namespace error {
+enum processor_errors {
+ /// Catch-all error for processor policy errors that don't fit in other
+ /// categories
+ general = 1,
+
+ /// Error was the result of improperly formatted user input
+ bad_request,
+
+ /// Processor encountered a protocol violation in an incoming message
+ protocol_violation,
+
+ /// Processor encountered a message that was too large
+ message_too_big,
+
+ /// Processor encountered invalid payload data.
+ invalid_payload,
+
+ /// The processor method was called with invalid arguments
+ invalid_arguments,
+
+ /// Opcode was invalid for requested operation
+ invalid_opcode,
+
+ /// Control frame too large
+ control_too_big,
+
+ /// Illegal use of reserved bit
+ invalid_rsv_bit,
+
+ /// Fragmented control message
+ fragmented_control,
+
+ /// Continuation without message
+ invalid_continuation,
+
+ /// Clients may not send unmasked frames
+ masking_required,
+
+ /// Servers may not send masked frames
+ masking_forbidden,
+
+ /// Payload length not minimally encoded
+ non_minimal_encoding,
+
+ /// Not supported on 32 bit systems
+ requires_64bit,
+
+ /// Invalid UTF-8 encoding
+ invalid_utf8,
+
+ /// Operation required not implemented functionality
+ not_implemented,
+
+ /// Invalid HTTP method
+ invalid_http_method,
+
+ /// Invalid HTTP version
+ invalid_http_version,
+
+ /// Invalid HTTP status
+ invalid_http_status,
+
+ /// Missing Required Header
+ missing_required_header,
+
+ /// Embedded SHA-1 library error
+ sha1_library,
+
+ /// No support for this feature in this protocol version.
+ no_protocol_support,
+
+ /// Reserved close code used
+ reserved_close_code,
+
+ /// Invalid close code used
+ invalid_close_code,
+
+ /// Using a reason requires a close code
+ reason_requires_code,
+
+ /// Error parsing subprotocols
+ subprotocol_parse_error,
+
+ /// Error parsing extensions
+ extension_parse_error,
+
+ /// Extension related operation was ignored because extensions are disabled
+ extensions_disabled,
+
+ /// Short Ke3 read. Hybi00 requires a third key to be read from the 8 bytes
+ /// after the handshake. Less than 8 bytes were read.
+ short_key3
+};
+
+/// Category for processor errors
+class processor_category : public lib::error_category {
+public:
+ processor_category() {}
+
+ char const * name() const _WEBSOCKETPP_NOEXCEPT_TOKEN_ {
+ return "websocketpp.processor";
+ }
+
+ std::string message(int value) const {
+ switch(value) {
+ case error::general:
+ return "Generic processor error";
+ case error::bad_request:
+ return "invalid user input";
+ case error::protocol_violation:
+ return "Generic protocol violation";
+ case error::message_too_big:
+ return "A message was too large";
+ case error::invalid_payload:
+ return "A payload contained invalid data";
+ case error::invalid_arguments:
+ return "invalid function arguments";
+ case error::invalid_opcode:
+ return "invalid opcode";
+ case error::control_too_big:
+ return "Control messages are limited to fewer than 125 characters";
+ case error::invalid_rsv_bit:
+ return "Invalid use of reserved bits";
+ case error::fragmented_control:
+ return "Control messages cannot be fragmented";
+ case error::invalid_continuation:
+ return "Invalid message continuation";
+ case error::masking_required:
+ return "Clients may not send unmasked frames";
+ case error::masking_forbidden:
+ return "Servers may not send masked frames";
+ case error::non_minimal_encoding:
+ return "Payload length was not minimally encoded";
+ case error::requires_64bit:
+ return "64 bit frames are not supported on 32 bit systems";
+ case error::invalid_utf8:
+ return "Invalid UTF8 encoding";
+ case error::not_implemented:
+ return "Operation required not implemented functionality";
+ case error::invalid_http_method:
+ return "Invalid HTTP method.";
+ case error::invalid_http_version:
+ return "Invalid HTTP version.";
+ case error::invalid_http_status:
+ return "Invalid HTTP status.";
+ case error::missing_required_header:
+ return "A required HTTP header is missing";
+ case error::sha1_library:
+ return "SHA-1 library error";
+ case error::no_protocol_support:
+ return "The WebSocket protocol version in use does not support this feature";
+ case error::reserved_close_code:
+ return "Reserved close code used";
+ case error::invalid_close_code:
+ return "Invalid close code used";
+ case error::reason_requires_code:
+ return "Using a close reason requires a valid close code";
+ case error::subprotocol_parse_error:
+ return "Error parsing subprotocol header";
+ case error::extension_parse_error:
+ return "Error parsing extension header";
+ case error::extensions_disabled:
+ return "Extensions are disabled";
+ case error::short_key3:
+ return "Short Hybi00 Key 3 read";
+ default:
+ return "Unknown";
+ }
+ }
+};
+
+/// Get a reference to a static copy of the processor error category
+inline lib::error_category const & get_processor_category() {
+ static processor_category instance;
+ return instance;
+}
+
+/// Create an error code with the given value and the processor category
+inline lib::error_code make_error_code(error::processor_errors e) {
+ return lib::error_code(static_cast<int>(e), get_processor_category());
+}
+
+/// Converts a processor error_code into a websocket close code
+/**
+ * Looks up the appropriate WebSocket close code that should be sent after an
+ * error of this sort occurred.
+ *
+ * If the error is not in the processor category close::status::blank is
+ * returned.
+ *
+ * If the error isn't normally associated with reasons to close a connection
+ * (such as errors intended to be used internally or delivered to client
+ * applications, ex: invalid arguments) then
+ * close::status::internal_endpoint_error is returned.
+ */
+inline close::status::value to_ws(lib::error_code ec) {
+ if (ec.category() != get_processor_category()) {
+ return close::status::blank;
+ }
+
+ switch (ec.value()) {
+ case error::protocol_violation:
+ case error::control_too_big:
+ case error::invalid_opcode:
+ case error::invalid_rsv_bit:
+ case error::fragmented_control:
+ case error::invalid_continuation:
+ case error::masking_required:
+ case error::masking_forbidden:
+ case error::reserved_close_code:
+ case error::invalid_close_code:
+ return close::status::protocol_error;
+ case error::invalid_payload:
+ case error::invalid_utf8:
+ return close::status::invalid_payload;
+ case error::message_too_big:
+ return close::status::message_too_big;
+ default:
+ return close::status::internal_endpoint_error;
+ }
+}
+
+} // namespace error
+} // namespace processor
+} // namespace websocketpp
+
+_WEBSOCKETPP_ERROR_CODE_ENUM_NS_START_
+template<> struct is_error_code_enum<websocketpp::processor::error::processor_errors>
+{
+ static bool const value = true;
+};
+_WEBSOCKETPP_ERROR_CODE_ENUM_NS_END_
+
+#endif //WEBSOCKETPP_PROCESSOR_BASE_HPP