Keep only base/extractor.[cc|h].

net/cup_utils.cc

-// Copyright 2008-2009 Google Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-// ========================================================================
-
-#include "omaha/net/cup_utils.h"
-
-#include <algorithm>
-#include <vector>
-#include "omaha/base/debug.h"
-#include "omaha/base/security/b64.h"
-#include "omaha/base/security/hmac.h"
-#include "omaha/base/security/sha.h"
-
-namespace omaha {
-
-namespace cup_utils {
-
-std::vector<uint8> RsaPad(size_t rsa_key_size,
-                          const void* data, size_t data_length) {
-  ASSERT1(rsa_key_size >= SHA_DIGEST_SIZE);
-  ASSERT1(data);
-
-  // The result gets padded with zeros if the result size is greater than
-  // the size of the buffer provided by the caller.
-  const uint8* start = static_cast<const uint8*>(data);
-  std::vector<uint8> result(start, start + data_length);
-  result.resize(rsa_key_size - SHA_DIGEST_SIZE);
-
-  // The input needs to be smaller than the RSA modulus, which has always the
-  // msb set.
-  result[0] &= 127;  // Reset msb
-  result[0] |= 64;   // Set second highest bit.
-
-  uint8 digest[SHA_DIGEST_SIZE] = {0};
-  SHA(&result.front(), result.size(), digest);
-
-  result.insert(result.end(), digest, digest + SHA_DIGEST_SIZE);
-  ASSERT1(result.size() == rsa_key_size);
-  return result;
-}
-
-CStringA B64Encode(const void* data, size_t data_length) {
-  ASSERT1(data);
-
-  // After encoding the size grows a little bit, about 133%. We assume 150%
-  // bigger size for simplicity. Also, the output length is a multiple of
-  // 4 bytes, so the minimum buffer should be at least 5 chars to include
-  // space for the string terminator.
-  CStringA result;
-  const size_t kMinBuffer = 5;
-  int result_max_size = std::max(data_length * 3 / 2, kMinBuffer);
-  int result_size = B64_encode(static_cast<const uint8*>(data),
-                               data_length,
-                               CStrBufA(result, result_max_size),
-                               result_max_size);
-  ASSERT1(result_size == result.GetLength());
-  return result;
-}
-
-CStringA B64Encode(const std::vector<uint8>& data) {
-  return B64Encode(&data.front(), data.size());
-}
-
-std::vector<uint8> Hash(const std::vector<uint8>& data) {
-  std::vector<uint8>result(SHA_DIGEST_SIZE);
-  SHA(data.empty() ? NULL : &data.front(), data.size(), &result.front());
-  return result;
-}
-
-std::vector<uint8> Hash(const CStringA& data) {
-  std::vector<uint8>result(SHA_DIGEST_SIZE);
-  SHA(data.GetString(), data.GetLength(), &result.front());
-  return result;
-}
-
-std::vector<uint8> HashBuffers(const void* buf1, size_t len1,
-                               const void* buf2, size_t len2,
-                               const void* buf3, size_t len3) {
-  SHA_CTX sha_ctx = {0};
-  SHA_init(&sha_ctx);
-  const void* buffers[] = {buf1, buf2, buf3};
-  const size_t lengths[] = {len1, len2, len3};
-  for (size_t i = 0; i != arraysize(buffers); ++i) {
-    uint8 hash[SHA_DIGEST_SIZE] = {0};
-    SHA(buffers[i], lengths[i], hash);
-    SHA_update(&sha_ctx, hash, sizeof(hash));
-  }
-  std::vector<uint8> result(SHA_DIGEST_SIZE);
-  memcpy(&result.front(), SHA_final(&sha_ctx), result.size());
-  return result;
-}
-
-std::vector<uint8> SymSign(const std::vector<uint8>& key,
-                           uint8 id,
-                           const std::vector<uint8>* h1,
-                           const std::vector<uint8>* h2,
-                           const std::vector<uint8>* h3) {
-  HMAC_CTX hmac_ctx = {0};
-  HMAC_SHA_init(&hmac_ctx, &key.front(), key.size());
-  HMAC_update(&hmac_ctx, &id, sizeof(id));
-  const std::vector<uint8>* args[] = {h1, h2, h3};
-  for (size_t i = 0; i != arraysize(args); ++i) {
-    if (args[i]) {
-      ASSERT1(args[i]->size() == SHA_DIGEST_SIZE);
-      HMAC_update(&hmac_ctx, &args[i]->front(), args[i]->size());
-    }
-  }
-  std::vector<uint8> result(SHA_DIGEST_SIZE);
-  memcpy(&result.front(), HMAC_final(&hmac_ctx), result.size());
-  return result;
-}
-
-// Looks for "c=", extracts a substring up to ';', which is the attribute
-// delimiter, and trims the white spaces at the end. If found, it returns
-// the string corresponding to "c=xxx", otherwise it returns an empty string.
-CString ParseCupCookie(const CString& cookie_header) {
-  CString cookie;
-  int start = cookie_header.Find(_T("c="));
-  if (start != -1) {
-    int end = cookie_header.Find(_T(';'), start);
-    if (end != -1) {
-      cookie = cookie_header.Mid(start, end - start);
-    } else {
-      cookie = cookie_header.Mid(start);
-    }
-    cookie.TrimRight(_T(' '));
-  }
-  return cookie;
-}
-
-}  // namespace cup_utils
-
-}  // namespace omaha
-