Move most of the component updater artifacts to update_client.

components/update_client/utils.cc

Index: components/update_client/utils.cc
diff --git a/components/update_client/utils.cc b/components/update_client/utils.cc
new file mode 100644
index 0000000000000000000000000000000000000000..47bb43771e78b6e54e08a24c8114894ab6b98f33
--- /dev/null
+++ b/components/update_client/utils.cc
@@ -0,0 +1,195 @@
+// Copyright 2014 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 "components/update_client/utils.h"
+
+#include <stdint.h>
+#include <cmath>
+
+#include "base/files/file_path.h"
+#include "base/files/file_util.h"
+#include "base/guid.h"
+#include "base/strings/string_number_conversions.h"
+#include "base/strings/string_piece.h"
+#include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
+#include "base/sys_info.h"
+#include "base/win/windows_version.h"
+#include "components/crx_file/id_util.h"
+#include "components/update_client/configurator.h"
+#include "components/update_client/crx_update_item.h"
+#include "components/update_client/update_client.h"
+#include "components/update_client/update_query_params.h"
+#include "net/base/load_flags.h"
+#include "net/url_request/url_fetcher.h"
+#include "net/url_request/url_request_context_getter.h"
+#include "net/url_request/url_request_status.h"
+
+namespace update_client {
+
+namespace {
+
+// Returns the amount of physical memory in GB, rounded to the nearest GB.
+int GetPhysicalMemoryGB() {
+  const double kOneGB = 1024 * 1024 * 1024;
+  const int64_t phys_mem = base::SysInfo::AmountOfPhysicalMemory();
+  return static_cast<int>(std::floor(0.5 + phys_mem / kOneGB));
+}
+
+// Produces an extension-like friendly id.
+std::string HexStringToID(const std::string& hexstr) {
+  std::string id;
+  for (size_t i = 0; i < hexstr.size(); ++i) {
+    int val = 0;
+    if (base::HexStringToInt(
+            base::StringPiece(hexstr.begin() + i, hexstr.begin() + i + 1),
+            &val)) {
+      id.append(1, val + 'a');
+    } else {
+      id.append(1, 'a');
+    }
+  }
+
+  DCHECK(crx_file::id_util::IdIsValid(id));
+
+  return id;
+}
+
+}  // namespace
+
+std::string BuildProtocolRequest(const std::string& browser_version,
+                                 const std::string& channel,
+                                 const std::string& lang,
+                                 const std::string& os_long_name,
+                                 const std::string& request_body,
+                                 const std::string& additional_attributes) {
+  const std::string prod_id(
+      UpdateQueryParams::GetProdIdString(UpdateQueryParams::CHROME));
+
+  std::string request(
+      "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
+      "<request protocol=\"3.0\" ");
+
+  if (!additional_attributes.empty())
+    base::StringAppendF(&request, "%s ", additional_attributes.c_str());
+
+  // Chrome version and platform information.
+  base::StringAppendF(
+      &request,
+      "version=\"%s-%s\" prodversion=\"%s\" "
+      "requestid=\"{%s}\" lang=\"%s\" updaterchannel=\"%s\" prodchannel=\"%s\" "
+      "os=\"%s\" arch=\"%s\" nacl_arch=\"%s\"",
+      prod_id.c_str(),
+      browser_version.c_str(),            // "version"
+      browser_version.c_str(),            // "prodversion"
+      base::GenerateGUID().c_str(),       // "requestid"
+      lang.c_str(),                       // "lang",
+      channel.c_str(),                    // "updaterchannel"
+      channel.c_str(),                    // "prodchannel"
+      UpdateQueryParams::GetOS(),         // "os"
+      UpdateQueryParams::GetArch(),       // "arch"
+      UpdateQueryParams::GetNaclArch());  // "nacl_arch"
+#if defined(OS_WIN)
+  const bool is_wow64(base::win::OSInfo::GetInstance()->wow64_status() ==
+                      base::win::OSInfo::WOW64_ENABLED);
+  if (is_wow64)
+    base::StringAppendF(&request, " wow64=\"1\"");
+#endif
+  base::StringAppendF(&request, ">");
+
+  // HW platform information.
+  base::StringAppendF(&request, "<hw physmemory=\"%d\"/>",
+                      GetPhysicalMemoryGB());  // "physmem" in GB.
+
+  // OS version and platform information.
+  base::StringAppendF(
+      &request, "<os platform=\"%s\" version=\"%s\" arch=\"%s\"/>",
+      os_long_name.c_str(),                                    // "platform"
+      base::SysInfo().OperatingSystemVersion().c_str(),        // "version"
+      base::SysInfo().OperatingSystemArchitecture().c_str());  // "arch"
+
+  // The actual payload of the request.
+  base::StringAppendF(&request, "%s</request>", request_body.c_str());
+
+  return request;
+}
+
+net::URLFetcher* SendProtocolRequest(
+    const GURL& url,
+    const std::string& protocol_request,
+    net::URLFetcherDelegate* url_fetcher_delegate,
+    net::URLRequestContextGetter* url_request_context_getter) {
+  net::URLFetcher* url_fetcher(net::URLFetcher::Create(
+      0, url, net::URLFetcher::POST, url_fetcher_delegate));
+
+  url_fetcher->SetUploadData("application/xml", protocol_request);
+  url_fetcher->SetRequestContext(url_request_context_getter);
+  url_fetcher->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES |
+                            net::LOAD_DO_NOT_SAVE_COOKIES |
+                            net::LOAD_DISABLE_CACHE);
+  url_fetcher->SetAutomaticallyRetryOn5xx(false);
+  url_fetcher->Start();
+
+  return url_fetcher;
+}
+
+bool FetchSuccess(const net::URLFetcher& fetcher) {
+  return GetFetchError(fetcher) == 0;
+}
+
+int GetFetchError(const net::URLFetcher& fetcher) {
+  const net::URLRequestStatus::Status status(fetcher.GetStatus().status());
+  switch (status) {
+    case net::URLRequestStatus::IO_PENDING:
+    case net::URLRequestStatus::CANCELED:
+      // Network status is a small positive number.
+      return status;
+
+    case net::URLRequestStatus::SUCCESS: {
+      // Response codes are positive numbers, greater than 100.
+      const int response_code(fetcher.GetResponseCode());
+      if (response_code == 200)
+        return 0;
+      else
+        return response_code ? response_code : -1;
+    }
+
+    case net::URLRequestStatus::FAILED: {
+      // Network errors are small negative numbers.
+      const int error = fetcher.GetStatus().error();
+      return error ? error : -1;
+    }
+
+    default:
+      return -1;
+  }
+}
+
+bool HasDiffUpdate(const CrxUpdateItem* update_item) {
+  return !update_item->crx_diffurls.empty();
+}
+
+bool IsHttpServerError(int status_code) {
+  return 500 <= status_code && status_code < 600;
+}
+
+bool DeleteFileAndEmptyParentDirectory(const base::FilePath& filepath) {
+  if (!base::DeleteFile(filepath, false))
+    return false;
+
+  const base::FilePath dirname(filepath.DirName());
+  if (!base::IsDirectoryEmpty(dirname))
+    return true;
+
+  return base::DeleteFile(dirname, false);
+}
+
+std::string GetCrxComponentID(const CrxComponent& component) {
+  const size_t kCrxIdSize = 16;
+  CHECK_GE(component.pk_hash.size(), kCrxIdSize);
+  return HexStringToID(base::StringToLowerASCII(
+      base::HexEncode(&component.pk_hash[0], kCrxIdSize)));
+}
+
+}  // namespace update_client