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chrome/common/cloud_print/cloud_print_helpers.cc

Index: chrome/common/cloud_print/cloud_print_helpers.cc
diff --git a/chrome/common/cloud_print/cloud_print_helpers.cc b/chrome/common/cloud_print/cloud_print_helpers.cc
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+++ b/chrome/common/cloud_print/cloud_print_helpers.cc
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+// Copyright (c) 2012 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 "chrome/common/cloud_print/cloud_print_helpers.h"
+
+#include "base/json/json_reader.h"
+#include "base/logging.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/rand_util.h"
+#include "base/stringprintf.h"
+#include "base/values.h"
+#include "chrome/common/guid.h"
+#include "googleurl/src/gurl.h"
+
+namespace cloud_print {
+
+const char kPrinterListValue[] = "printers";
+const char kSuccessValue[] = "success";
+
+// Certain cloud print requests require Chrome's X-CloudPrint-Proxy header.
+const char kChromeCloudPrintProxyHeader[] = "X-CloudPrint-Proxy: Chrome";
+
+const char kDefaultCloudPrintOAuthClientId[] =
+    "551556820943.apps.googleusercontent.com";
+
+std::string AppendPathToUrl(const GURL& url, const std::string& path) {
+  DCHECK(path[0] != '/');
+  std::string ret = url.path();
+  if (url.has_path() && (ret[ret.length() - 1] != '/'))
+    ret += '/';
+  ret += path;
+  return ret;
+}
+
+GURL GetUrlForSearch(const GURL& cloud_print_server_url) {
+  std::string path(AppendPathToUrl(cloud_print_server_url, "search"));
+  GURL::Replacements replacements;
+  replacements.SetPathStr(path);
+  return cloud_print_server_url.ReplaceComponents(replacements);
+}
+
+GURL GetUrlForSubmit(const GURL& cloud_print_server_url) {
+  std::string path(AppendPathToUrl(cloud_print_server_url, "submit"));
+  GURL::Replacements replacements;
+  replacements.SetPathStr(path);
+  return cloud_print_server_url.ReplaceComponents(replacements);
+}
+
+GURL GetUrlForGetAuthCode(const GURL& cloud_print_server_url,
+                          const std::string& oauth_client_id,
+                          const std::string& proxy_id) {
+  // We use the internal API "createrobot" instead of "getauthcode". This API
+  // will add the robot as owner to all the existing printers for this user.
+  std::string path(AppendPathToUrl(cloud_print_server_url, "createrobot"));
+  GURL::Replacements replacements;
+  replacements.SetPathStr(path);
+  std::string query = StringPrintf("oauth_client_id=%s&proxy=%s",
+                                    oauth_client_id.c_str(),
+                                    proxy_id.c_str());
+  replacements.SetQueryStr(query);
+  return cloud_print_server_url.ReplaceComponents(replacements);
+}
+
+bool ParseResponseJSON(const std::string& response_data,
+                       bool* succeeded,
+                       DictionaryValue** response_dict) {
+  scoped_ptr<Value> message_value(base::JSONReader::Read(response_data, false));
+  if (!message_value.get())
+    return false;
+
+  if (!message_value->IsType(Value::TYPE_DICTIONARY))
+    return false;
+
+  scoped_ptr<DictionaryValue> response_dict_local(
+      static_cast<DictionaryValue*>(message_value.release()));
+  if (succeeded &&
+      !response_dict_local->GetBoolean(cloud_print::kSuccessValue, succeeded))
+    *succeeded = false;
+  if (response_dict)
+    *response_dict = response_dict_local.release();
+  return true;
+}
+
+void AddMultipartValueForUpload(const std::string& value_name,
+                                const std::string& value,
+                                const std::string& mime_boundary,
+                                const std::string& content_type,
+                                std::string* post_data) {
+  DCHECK(post_data);
+  // First line is the boundary
+  post_data->append("--" + mime_boundary + "\r\n");
+  // Next line is the Content-disposition
+  post_data->append(StringPrintf("Content-Disposition: form-data; "
+                   "name=\"%s\"\r\n", value_name.c_str()));
+  if (!content_type.empty()) {
+    // If Content-type is specified, the next line is that
+    post_data->append(StringPrintf("Content-Type: %s\r\n",
+                      content_type.c_str()));
+  }
+  // Leave an empty line and append the value.
+  post_data->append(StringPrintf("\r\n%s\r\n", value.c_str()));
+}
+
+// Create a MIME boundary marker (27 '-' characters followed by 16 hex digits).
+void CreateMimeBoundaryForUpload(std::string* out) {
+  int r1 = base::RandInt(0, kint32max);
+  int r2 = base::RandInt(0, kint32max);
+  base::SStringPrintf(out, "---------------------------%08X%08X", r1, r2);
+}
+
+std::string GenerateProxyId() {
+  return std::string("CP_PROXY_").append(guid::GenerateGUID());
+}
+
+}  // namespace cloud_print