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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "http2/http2_constants.h"
#include "absl/strings/str_cat.h"
#include "absl/strings/string_view.h"
#include "http2/platform/api/http2_logging.h"
#include "http2/platform/api/http2_string_utils.h"
namespace http2 {
std::string Http2FrameTypeToString(Http2FrameType v) {
switch (v) {
case Http2FrameType::DATA:
return "DATA";
case Http2FrameType::HEADERS:
return "HEADERS";
case Http2FrameType::PRIORITY:
return "PRIORITY";
case Http2FrameType::RST_STREAM:
return "RST_STREAM";
case Http2FrameType::SETTINGS:
return "SETTINGS";
case Http2FrameType::PUSH_PROMISE:
return "PUSH_PROMISE";
case Http2FrameType::PING:
return "PING";
case Http2FrameType::GOAWAY:
return "GOAWAY";
case Http2FrameType::WINDOW_UPDATE:
return "WINDOW_UPDATE";
case Http2FrameType::CONTINUATION:
return "CONTINUATION";
case Http2FrameType::ALTSVC:
return "ALTSVC";
case Http2FrameType::PRIORITY_UPDATE:
return "PRIORITY_UPDATE";
}
return absl::StrCat("UnknownFrameType(", static_cast<int>(v), ")");
}
std::string Http2FrameTypeToString(uint8_t v) {
return Http2FrameTypeToString(static_cast<Http2FrameType>(v));
}
std::string Http2FrameFlagsToString(Http2FrameType type, uint8_t flags) {
std::string s;
// Closure to append flag name |v| to the std::string |s|,
// and to clear |bit| from |flags|.
auto append_and_clear = [&s, &flags](absl::string_view v, uint8_t bit) {
if (!s.empty()) {
s.push_back('|');
}
absl::StrAppend(&s, v);
flags ^= bit;
};
if (flags & 0x01) {
if (type == Http2FrameType::DATA || type == Http2FrameType::HEADERS) {
append_and_clear("END_STREAM", Http2FrameFlag::END_STREAM);
} else if (type == Http2FrameType::SETTINGS ||
type == Http2FrameType::PING) {
append_and_clear("ACK", Http2FrameFlag::ACK);
}
}
if (flags & 0x04) {
if (type == Http2FrameType::HEADERS ||
type == Http2FrameType::PUSH_PROMISE ||
type == Http2FrameType::CONTINUATION) {
append_and_clear("END_HEADERS", Http2FrameFlag::END_HEADERS);
}
}
if (flags & 0x08) {
if (type == Http2FrameType::DATA || type == Http2FrameType::HEADERS ||
type == Http2FrameType::PUSH_PROMISE) {
append_and_clear("PADDED", Http2FrameFlag::PADDED);
}
}
if (flags & 0x20) {
if (type == Http2FrameType::HEADERS) {
append_and_clear("PRIORITY", Http2FrameFlag::PRIORITY);
}
}
if (flags != 0) {
append_and_clear(Http2StringPrintf("0x%02x", flags), flags);
}
QUICHE_DCHECK_EQ(0, flags);
return s;
}
std::string Http2FrameFlagsToString(uint8_t type, uint8_t flags) {
return Http2FrameFlagsToString(static_cast<Http2FrameType>(type), flags);
}
std::string Http2ErrorCodeToString(uint32_t v) {
switch (v) {
case 0x0:
return "NO_ERROR";
case 0x1:
return "PROTOCOL_ERROR";
case 0x2:
return "INTERNAL_ERROR";
case 0x3:
return "FLOW_CONTROL_ERROR";
case 0x4:
return "SETTINGS_TIMEOUT";
case 0x5:
return "STREAM_CLOSED";
case 0x6:
return "FRAME_SIZE_ERROR";
case 0x7:
return "REFUSED_STREAM";
case 0x8:
return "CANCEL";
case 0x9:
return "COMPRESSION_ERROR";
case 0xa:
return "CONNECT_ERROR";
case 0xb:
return "ENHANCE_YOUR_CALM";
case 0xc:
return "INADEQUATE_SECURITY";
case 0xd:
return "HTTP_1_1_REQUIRED";
}
return absl::StrCat("UnknownErrorCode(0x", absl::Hex(v), ")");
}
std::string Http2ErrorCodeToString(Http2ErrorCode v) {
return Http2ErrorCodeToString(static_cast<uint32_t>(v));
}
std::string Http2SettingsParameterToString(uint32_t v) {
switch (v) {
case 0x1:
return "HEADER_TABLE_SIZE";
case 0x2:
return "ENABLE_PUSH";
case 0x3:
return "MAX_CONCURRENT_STREAMS";
case 0x4:
return "INITIAL_WINDOW_SIZE";
case 0x5:
return "MAX_FRAME_SIZE";
case 0x6:
return "MAX_HEADER_LIST_SIZE";
}
return absl::StrCat("UnknownSettingsParameter(0x", absl::Hex(v), ")");
}
std::string Http2SettingsParameterToString(Http2SettingsParameter v) {
return Http2SettingsParameterToString(static_cast<uint32_t>(v));
}
} // namespace http2
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