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| 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "net/quic/spdy_utils.h" | |
| 6 | |
| 7 #include <memory> | |
| 8 #include <vector> | |
| 9 | |
| 10 #include "base/stl_util.h" | |
| 11 #include "base/strings/string_number_conversions.h" | |
| 12 #include "base/strings/string_split.h" | |
| 13 #include "base/strings/string_util.h" | |
| 14 #include "base/strings/stringprintf.h" | |
| 15 #include "net/spdy/spdy_flags.h" | |
| 16 #include "net/spdy/spdy_frame_builder.h" | |
| 17 #include "net/spdy/spdy_framer.h" | |
| 18 #include "net/spdy/spdy_protocol.h" | |
| 19 #include "url/gurl.h" | |
| 20 | |
| 21 using base::StringPiece; | |
| 22 using std::string; | |
| 23 using std::vector; | |
| 24 | |
| 25 namespace net { | |
| 26 | |
| 27 // static | |
| 28 string SpdyUtils::SerializeUncompressedHeaders(const SpdyHeaderBlock& headers) { | |
| 29 SpdyMajorVersion spdy_version = HTTP2; | |
| 30 | |
| 31 size_t length = SpdyFramer::GetSerializedLength(spdy_version, &headers); | |
| 32 SpdyFrameBuilder builder(length, spdy_version); | |
| 33 SpdyFramer framer(spdy_version); | |
| 34 framer.SerializeHeaderBlockWithoutCompression(&builder, headers); | |
| 35 SpdySerializedFrame block(builder.take()); | |
| 36 return string(block.data(), length); | |
| 37 } | |
| 38 | |
| 39 // static | |
| 40 bool SpdyUtils::ParseHeaders(const char* data, | |
| 41 uint32_t data_len, | |
| 42 int64_t* content_length, | |
| 43 SpdyHeaderBlock* headers) { | |
| 44 SpdyFramer framer(HTTP2); | |
| 45 if (!framer.ParseHeaderBlockInBuffer(data, data_len, headers) || | |
| 46 headers->empty()) { | |
| 47 return false; // Headers were invalid. | |
| 48 } | |
| 49 | |
| 50 if (ContainsKey(*headers, "content-length")) { | |
| 51 // Check whether multiple values are consistent. | |
| 52 base::StringPiece content_length_header = (*headers)["content-length"]; | |
| 53 vector<string> values = | |
| 54 base::SplitString(content_length_header, base::StringPiece("\0", 1), | |
| 55 base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL); | |
| 56 for (const string& value : values) { | |
| 57 int64_t new_value; | |
| 58 if (!base::StringToInt64(value, &new_value) || new_value < 0) { | |
| 59 return false; | |
| 60 } | |
| 61 if (*content_length < 0) { | |
| 62 *content_length = new_value; | |
| 63 continue; | |
| 64 } | |
| 65 if (new_value != *content_length) { | |
| 66 return false; | |
| 67 } | |
| 68 } | |
| 69 } | |
| 70 | |
| 71 return true; | |
| 72 } | |
| 73 | |
| 74 // static | |
| 75 bool SpdyUtils::ParseTrailers(const char* data, | |
| 76 uint32_t data_len, | |
| 77 size_t* final_byte_offset, | |
| 78 SpdyHeaderBlock* trailers) { | |
| 79 SpdyFramer framer(HTTP2); | |
| 80 if (!framer.ParseHeaderBlockInBuffer(data, data_len, trailers) || | |
| 81 trailers->empty()) { | |
| 82 DVLOG(1) << "Request Trailers are invalid."; | |
| 83 return false; // Trailers were invalid. | |
| 84 } | |
| 85 | |
| 86 // Pull out the final offset pseudo header which indicates the number of | |
| 87 // response body bytes expected. | |
| 88 auto it = trailers->find(kFinalOffsetHeaderKey); | |
| 89 if (it == trailers->end() || | |
| 90 !base::StringToSizeT(it->second, final_byte_offset)) { | |
| 91 DVLOG(1) << "Required key '" << kFinalOffsetHeaderKey << "' not present"; | |
| 92 return false; | |
| 93 } | |
| 94 // The final offset header is no longer needed. | |
| 95 trailers->erase(it->first); | |
| 96 | |
| 97 // Trailers must not have empty keys, and must not contain pseudo headers. | |
| 98 for (const auto& trailer : *trailers) { | |
| 99 base::StringPiece key = trailer.first; | |
| 100 base::StringPiece value = trailer.second; | |
| 101 if (key.starts_with(":")) { | |
| 102 DVLOG(1) << "Trailers must not contain pseudo-header: '" << key << "','" | |
| 103 << value << "'."; | |
| 104 return false; | |
| 105 } | |
| 106 | |
| 107 // TODO(rjshade): Check for other forbidden keys, following the HTTP/2 spec. | |
| 108 } | |
| 109 | |
| 110 DVLOG(1) << "Successfully parsed Trailers."; | |
| 111 return true; | |
| 112 } | |
| 113 | |
| 114 bool SpdyUtils::CopyAndValidateHeaders(const QuicHeaderList& header_list, | |
| 115 int64_t* content_length, | |
| 116 SpdyHeaderBlock* headers) { | |
| 117 for (const auto& p : header_list) { | |
| 118 const string& name = p.first; | |
| 119 if (name.empty()) { | |
| 120 DVLOG(1) << "Header name must not be empty."; | |
| 121 return false; | |
| 122 } | |
| 123 | |
| 124 if (FLAGS_chromium_http2_flag_use_new_spdy_header_block_header_joining) { | |
| 125 headers->AppendValueOrAddHeader(name, p.second); | |
| 126 } else { | |
| 127 auto iter = headers->find(name); | |
| 128 if (iter == headers->end()) { | |
| 129 (*headers)[name] = p.second; | |
| 130 } else { | |
| 131 // This header had multiple values, so it must be reconstructed. | |
| 132 StringPiece v = iter->second; | |
| 133 string s(v.data(), v.length()); | |
| 134 if (name == "cookie") { | |
| 135 // Obeys section 8.1.2.5 in RFC 7540 for cookie reconstruction. | |
| 136 s.append("; "); | |
| 137 } else { | |
| 138 StringPiece("\0", 1).AppendToString(&s); | |
| 139 } | |
| 140 s.append(p.second); | |
| 141 headers->ReplaceOrAppendHeader(name, s); | |
| 142 } | |
| 143 } | |
| 144 } | |
| 145 | |
| 146 if (ContainsKey(*headers, "content-length")) { | |
| 147 // Check whether multiple values are consistent. | |
| 148 StringPiece content_length_header = (*headers)["content-length"]; | |
| 149 vector<string> values = | |
| 150 base::SplitString(content_length_header, base::StringPiece("\0", 1), | |
| 151 base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL); | |
| 152 for (const string& value : values) { | |
| 153 int64_t new_value; | |
| 154 if (!base::StringToInt64(value, &new_value) || new_value < 0) { | |
| 155 DLOG(ERROR) << "Content length was either unparseable or negative."; | |
| 156 return false; | |
| 157 } | |
| 158 if (*content_length < 0) { | |
| 159 *content_length = new_value; | |
| 160 continue; | |
| 161 } | |
| 162 if (new_value != *content_length) { | |
| 163 DLOG(ERROR) << "Parsed content length " << new_value << " is " | |
| 164 << "inconsistent with previously detected content length " | |
| 165 << *content_length; | |
| 166 return false; | |
| 167 } | |
| 168 } | |
| 169 } | |
| 170 | |
| 171 DVLOG(1) << "Successfully parsed headers: " << headers->DebugString(); | |
| 172 return true; | |
| 173 } | |
| 174 | |
| 175 bool SpdyUtils::CopyAndValidateTrailers(const QuicHeaderList& header_list, | |
| 176 size_t* final_byte_offset, | |
| 177 SpdyHeaderBlock* trailers) { | |
| 178 bool found_final_byte_offset = false; | |
| 179 for (const auto& p : header_list) { | |
| 180 const string& name = p.first; | |
| 181 | |
| 182 // Pull out the final offset pseudo header which indicates the number of | |
| 183 // response body bytes expected. | |
| 184 int offset; | |
| 185 if (!found_final_byte_offset && name == kFinalOffsetHeaderKey && | |
| 186 base::StringToInt(p.second, &offset)) { | |
| 187 *final_byte_offset = offset; | |
| 188 found_final_byte_offset = true; | |
| 189 continue; | |
| 190 } | |
| 191 | |
| 192 if (name.empty() || name[0] == ':') { | |
| 193 DVLOG(1) << "Trailers must not be empty, and must not contain pseudo-" | |
| 194 << "headers. Found: '" << name << "'"; | |
| 195 return false; | |
| 196 } | |
| 197 | |
| 198 if (std::any_of(name.begin(), name.end(), base::IsAsciiUpper<char>)) { | |
| 199 DVLOG(1) << "Malformed header: Header name " << name | |
| 200 << " contains upper-case characters."; | |
| 201 return false; | |
| 202 } | |
| 203 | |
| 204 if (trailers->find(name) != trailers->end()) { | |
| 205 DVLOG(1) << "Duplicate header '" << name << "' found in trailers."; | |
| 206 return false; | |
| 207 } | |
| 208 | |
| 209 (*trailers)[name] = p.second; | |
| 210 } | |
| 211 | |
| 212 if (!found_final_byte_offset) { | |
| 213 DVLOG(1) << "Required key '" << kFinalOffsetHeaderKey << "' not present"; | |
| 214 return false; | |
| 215 } | |
| 216 | |
| 217 // TODO(rjshade): Check for other forbidden keys, following the HTTP/2 spec. | |
| 218 | |
| 219 DVLOG(1) << "Successfully parsed Trailers: " << trailers->DebugString(); | |
| 220 return true; | |
| 221 } | |
| 222 | |
| 223 // static | |
| 224 string SpdyUtils::GetUrlFromHeaderBlock(const SpdyHeaderBlock& headers) { | |
| 225 SpdyHeaderBlock::const_iterator it = headers.find(":scheme"); | |
| 226 if (it == headers.end()) { | |
| 227 return ""; | |
| 228 } | |
| 229 std::string url = it->second.as_string(); | |
| 230 | |
| 231 url.append("://"); | |
| 232 | |
| 233 it = headers.find(":authority"); | |
| 234 if (it == headers.end()) { | |
| 235 return ""; | |
| 236 } | |
| 237 url.append(it->second.as_string()); | |
| 238 | |
| 239 it = headers.find(":path"); | |
| 240 if (it == headers.end()) { | |
| 241 return ""; | |
| 242 } | |
| 243 url.append(it->second.as_string()); | |
| 244 return url; | |
| 245 } | |
| 246 | |
| 247 // static | |
| 248 string SpdyUtils::GetHostNameFromHeaderBlock(const SpdyHeaderBlock& headers) { | |
| 249 return GURL(GetUrlFromHeaderBlock(headers)).host(); | |
| 250 } | |
| 251 | |
| 252 // static | |
| 253 bool SpdyUtils::UrlIsValid(const SpdyHeaderBlock& headers) { | |
| 254 string url(GetUrlFromHeaderBlock(headers)); | |
| 255 return url != "" && GURL(url).is_valid(); | |
| 256 } | |
| 257 | |
| 258 } // namespace net | |
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Chromium Code Reviews
Issue 2193073003:
Move shared files in net/quic/ into net/quic/core/ (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master