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 namespace test {
  21
  22 std::string HexDumpWithMarks(const unsigned char* data, int length,
  23                              const bool* marks, int mark_length) {
  24   static const char kHexChars[] = "0123456789abcdef";
  25   static const int kColumns = 4;
  26
  27   const int kSizeLimit = 1024;
  28   if (length > kSizeLimit || mark_length > kSizeLimit) {
  29     LOG(ERROR) << "Only dumping first " << kSizeLimit << " bytes.";
  30     length = std::min(length, kSizeLimit);
  31     mark_length = std::min(mark_length, kSizeLimit);
  32   }
  33
  34   std::string hex;
  35   for (const unsigned char* row = data; length > 0;
  36        row += kColumns, length -= kColumns) {
  37     for (const unsigned char *p = row; p < row + 4; ++p) {
  38       if (p < row + length) {
  39         const bool mark =
  40             (marks && (p - data) < mark_length && marks[p - data]);
  41         hex += mark ? '*' : ' ';
  42         hex += kHexChars[(*p & 0xf0) >> 4];
  43         hex += kHexChars[*p & 0x0f];
  44         hex += mark ? '*' : ' ';
  45       } else {
  46         hex += "    ";
  47       }
  48     }
  49     hex = hex + "  ";
  50
  51     for (const unsigned char *p = row; p < row + 4 && p < row + length; ++p)
  52       hex += (*p >= 0x20 && *p <= 0x7f) ? (*p) : '.';
  53
  54     hex = hex + '\n';
  55   }
  56   return hex;
  57 }
  58
  59 void CompareCharArraysWithHexError(
  60     const std::string& description,
  61     const unsigned char* actual,
  62     const int actual_len,
  63     const unsigned char* expected,
  64     const int expected_len) {
  65   const int min_len = std::min(actual_len, expected_len);
  66   const int max_len = std::max(actual_len, expected_len);
  67   scoped_ptr<bool[]> marks(new bool[max_len]);
  68   bool identical = (actual_len == expected_len);
  69   for (int i = 0; i < min_len; ++i) {
  70     if (actual[i] != expected[i]) {
  71       marks[i] = true;
  72       identical = false;
  73     } else {
  74       marks[i] = false;
  75     }
  76   }
  77   for (int i = min_len; i < max_len; ++i) {
  78     marks[i] = true;
  79   }
  80   if (identical) return;
  81   ADD_FAILURE()
  82       << "Description:\n"
  83       << description
  84       << "\n\nExpected:\n"
  85       << HexDumpWithMarks(expected, expected_len, marks.get(), max_len)
  86       << "\nActual:\n"
  87       << HexDumpWithMarks(actual, actual_len, marks.get(), max_len);
  88 }
  89
  90 void SetFrameFlags(SpdyFrame* frame,
  91                    uint8 flags,
  92                    SpdyMajorVersion spdy_version) {
  93   switch (spdy_version) {
  94     case SPDY2:
  95     case SPDY3:
  96     case HTTP2:
  97       frame->data()[4] = flags;
  98       break;
  99     default:
 100       LOG(FATAL) << "Unsupported SPDY version.";
 101   }
 102 }
 103
 104 void SetFrameLength(SpdyFrame* frame,
 105                     size_t length,
 106                     SpdyMajorVersion spdy_version) {
 107   switch (spdy_version) {
 108     case SPDY2:
 109     case SPDY3:
 110       CHECK_EQ(0u, length & ~kLengthMask);
 111       {
 112         int32 wire_length = base::HostToNet32(length);
 113         // The length field in SPDY 2 and 3 is a 24-bit (3B) integer starting at
 114         // offset 5.
 115         memcpy(frame->data() + 5, reinterpret_cast<char*>(&wire_length) + 1, 3);
 116       }
 117       break;
 118     case HTTP2:
 119       CHECK_GT(1u<<14, length);
 120       {
 121         int32 wire_length = base::HostToNet32(length);
 122         memcpy(frame->data(),
 123                reinterpret_cast<char*>(&wire_length) + 1,
 124                3);
 125       }
 126       break;
 127     default:
 128       LOG(FATAL) << "Unsupported SPDY version.";
 129   }
 130 }
 131
 132 bool CompareSpdyHeaderBlocks(const SpdyHeaderBlock& a,
 133                              const SpdyHeaderBlock& b) {
 134   return a.size() == b.size() && std::equal(a.begin(), a.end(), b.begin());
 135 }
 136
 137 std::string a2b_hex(const char* hex_data) {
 138   std::vector<uint8> output;
 139   std::string result;
 140   if (base::HexStringToBytes(hex_data, &output))
 141     result.assign(reinterpret_cast<const char*>(&output[0]), output.size());
 142   return result;
 143 }
 144
 145 HashValue GetTestHashValue(uint8_t label) {
 146   HashValue hash_value(HASH_VALUE_SHA256);
 147   memset(hash_value.data(), label, hash_value.size());
 148   return hash_value;
 149 }
 150
 151 std::string GetTestPin(uint8_t label) {
 152   HashValue hash_value = GetTestHashValue(label);
 153   std::string base64;
 154   base::Base64Encode(base::StringPiece(
 155       reinterpret_cast<char*>(hash_value.data()), hash_value.size()), &base64);
 156
 157   return std::string("pin-sha256=\"") + base64 + "\"";
 158 }
 159
 160 void AddPin(TransportSecurityState* state,
 161             const std::string& host,
 162             uint8_t primary_label,
 163             uint8_t backup_label) {
 164   std::string primary_pin = GetTestPin(primary_label);
 165   std::string backup_pin = GetTestPin(backup_label);
 166   std::string header = "max-age = 10000; " + primary_pin + "; " + backup_pin;
 167
 168   // Construct a fake SSLInfo that will pass AddHPKPHeader's checks.
 169   SSLInfo ssl_info;
 170   ssl_info.is_issued_by_known_root = true;
 171   ssl_info.public_key_hashes.push_back(GetTestHashValue(primary_label));
 172   EXPECT_TRUE(state->AddHPKPHeader(host, header, ssl_info));
 173 }
 174
 175 }  // namespace test
 176 }  // namespace net