net/spdy/spdy_test_utils.cc

   1 // Copyright (c) 2012 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/spdy/spdy_test_utils.h"
   6
   7 #include <cstring>
   8 #include <vector>
   9
  10 #include "base/base64.h"
  11 #include "base/logging.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/strings/string_number_conversions.h"
  14 #include "base/sys_byteorder.h"
  15 #include "net/http/transport_security_state.h"
  16 #include "net/ssl/ssl_info.h"
  17 #include "testing/gtest/include/gtest/gtest.h"
  18
  19 namespace net {
  20
  21 namespace test {
  22
  23 std::string HexDumpWithMarks(const unsigned char* data, int length,
  24                              const bool* marks, int mark_length) {
  25   static const char kHexChars[] = "0123456789abcdef";
  26   static const int kColumns = 4;
  27
  28   const int kSizeLimit = 1024;
  29   if (length > kSizeLimit || mark_length > kSizeLimit) {
  30     LOG(ERROR) << "Only dumping first " << kSizeLimit << " bytes.";
  31     length = std::min(length, kSizeLimit);
  32     mark_length = std::min(mark_length, kSizeLimit);
  33   }
  34
  35   std::string hex;
  36   for (const unsigned char* row = data; length > 0;
  37        row += kColumns, length -= kColumns) {
  38     for (const unsigned char *p = row; p < row + 4; ++p) {
  39       if (p < row + length) {
  40         const bool mark =
  41             (marks && (p - data) < mark_length && marks[p - data]);
  42         hex += mark ? '*' : ' ';
  43         hex += kHexChars[(*p & 0xf0) >> 4];
  44         hex += kHexChars[*p & 0x0f];
  45         hex += mark ? '*' : ' ';
  46       } else {
  47         hex += "    ";
  48       }
  49     }
  50     hex = hex + "  ";
  51
  52     for (const unsigned char *p = row; p < row + 4 && p < row + length; ++p)
  53       hex += (*p >= 0x20 && *p <= 0x7f) ? (*p) : '.';
  54
  55     hex = hex + '\n';
  56   }
  57   return hex;
  58 }
  59
  60 void CompareCharArraysWithHexError(
  61     const std::string& description,
  62     const unsigned char* actual,
  63     const int actual_len,
  64     const unsigned char* expected,
  65     const int expected_len) {
  66   const int min_len = std::min(actual_len, expected_len);
  67   const int max_len = std::max(actual_len, expected_len);
  68   scoped_ptr<bool[]> marks(new bool[max_len]);
  69   bool identical = (actual_len == expected_len);
  70   for (int i = 0; i < min_len; ++i) {
  71     if (actual[i] != expected[i]) {
  72       marks[i] = true;
  73       identical = false;
  74     } else {
  75       marks[i] = false;
  76     }
  77   }
  78   for (int i = min_len; i < max_len; ++i) {
  79     marks[i] = true;
  80   }
  81   if (identical) return;
  82   ADD_FAILURE()
  83       << "Description:\n"
  84       << description
  85       << "\n\nExpected:\n"
  86       << HexDumpWithMarks(expected, expected_len, marks.get(), max_len)
  87       << "\nActual:\n"
  88       << HexDumpWithMarks(actual, actual_len, marks.get(), max_len);
  89 }
  90
  91 void SetFrameFlags(SpdyFrame* frame,
  92                    uint8 flags,
  93                    SpdyMajorVersion spdy_version) {
  94   switch (spdy_version) {
  95     case SPDY2:
  96     case SPDY3:
  97     case SPDY4:
  98     case SPDY5:
  99       frame->data()[4] = flags;
 100       break;
 101     default:
 102       LOG(FATAL) << "Unsupported SPDY version.";
 103   }
 104 }
 105
 106 void SetFrameLength(SpdyFrame* frame,
 107                     size_t length,
 108                     SpdyMajorVersion spdy_version) {
 109   switch (spdy_version) {
 110     case SPDY2:
 111     case SPDY3:
 112       CHECK_EQ(0u, length & ~kLengthMask);
 113       {
 114         int32 wire_length = base::HostToNet32(length);
 115         // The length field in SPDY 2 and 3 is a 24-bit (3B) integer starting at
 116         // offset 5.
 117         memcpy(frame->data() + 5, reinterpret_cast<char*>(&wire_length) + 1, 3);
 118       }
 119       break;
 120     case SPDY4:
 121     case SPDY5:
 122       CHECK_GT(1u<<14, length);
 123       {
 124         int32 wire_length = base::HostToNet32(length);
 125         memcpy(frame->data(),
 126                reinterpret_cast<char*>(&wire_length) + 1,
 127                3);
 128       }
 129       break;
 130     default:
 131       LOG(FATAL) << "Unsupported SPDY version.";
 132   }
 133 }
 134
 135 std::string a2b_hex(const char* hex_data) {
 136   std::vector<uint8> output;
 137   std::string result;
 138   if (base::HexStringToBytes(hex_data, &output))
 139     result.assign(reinterpret_cast<const char*>(&output[0]), output.size());
 140   return result;
 141 }
 142
 143 HashValue GetTestHashValue(uint8_t label) {
 144   HashValue hash_value(HASH_VALUE_SHA256);
 145   memset(hash_value.data(), label, hash_value.size());
 146   return hash_value;
 147 }
 148
 149 std::string GetTestPin(uint8_t label) {
 150   HashValue hash_value = GetTestHashValue(label);
 151   std::string base64;
 152   base::Base64Encode(base::StringPiece(
 153       reinterpret_cast<char*>(hash_value.data()), hash_value.size()), &base64);
 154
 155   return std::string("pin-sha256=\"") + base64 + "\"";
 156 }
 157
 158 void AddPin(TransportSecurityState* state,
 159             const std::string& host,
 160             uint8_t primary_label,
 161             uint8_t backup_label) {
 162   std::string primary_pin = GetTestPin(primary_label);
 163   std::string backup_pin = GetTestPin(backup_label);
 164   std::string header = "max-age = 10000; " + primary_pin + "; " + backup_pin;
 165
 166   // Construct a fake SSLInfo that will pass AddHPKPHeader's checks.
 167   SSLInfo ssl_info;
 168   ssl_info.is_issued_by_known_root = true;
 169   ssl_info.public_key_hashes.push_back(GetTestHashValue(primary_label));
 170   EXPECT_TRUE(state->AddHPKPHeader(host, header, ssl_info));
 171 }
 172
 173 }  // namespace test
 174
 175 }  // namespace net