493 lines
15 KiB
C++
493 lines
15 KiB
C++
// Copyright (c) 2012 The Chromium Embedded Framework Authors.
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// Portions copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "libcef/browser/net/chrome_scheme_handler.h"
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#include <map>
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#include <string>
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#include <utility>
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#include "include/cef_version.h"
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#include "include/cef_web_plugin.h"
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#include "libcef/browser/frame_host_impl.h"
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#include "libcef/browser/net/internal_scheme_handler.h"
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#include "libcef/browser/net/url_request_manager.h"
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#include "libcef/browser/thread_util.h"
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#include "libcef/common/content_client.h"
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#include "base/command_line.h"
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#include "base/files/file_util.h"
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#include "base/logging.h"
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#include "base/path_service.h"
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#include "base/strings/string_util.h"
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#include "base/strings/stringprintf.h"
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#include "base/strings/utf_string_conversions.h"
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#include "base/values.h"
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#include "content/browser/net/view_http_cache_job_factory.h"
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#include "content/browser/net/view_blob_internals_job_factory.h"
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#include "content/public/common/url_constants.h"
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#include "content/public/common/user_agent.h"
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#include "grit/cef_resources.h"
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#include "grit/components_resources.h"
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#include "ipc/ipc_channel.h"
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#include "net/url_request/url_request.h"
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#include "ui/base/webui/web_ui_util.h"
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#include "ui/resources/grit/webui_resources.h"
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#include "ui/resources/grit/webui_resources_map.h"
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#include "v8/include/v8.h"
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namespace scheme {
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const char kChromeURL[] = "chrome://";
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namespace {
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const char kChromeCreditsDomain[] = "credits";
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const char kChromeLicenseDomain[] = "license";
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const char kChromeResourcesDomain[] = "resources";
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const char kChromeVersionDomain[] = "version";
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enum ChromeDomain {
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CHROME_UNKNOWN = 0,
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CHROME_CREDITS,
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CHROME_LICENSE,
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CHROME_RESOURCES,
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CHROME_VERSION,
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};
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ChromeDomain GetChromeDomain(const std::string& domain_name) {
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static struct {
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const char* name;
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ChromeDomain domain;
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} domains[] = {
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{ kChromeCreditsDomain, CHROME_CREDITS },
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{ kChromeLicenseDomain, CHROME_LICENSE },
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{ kChromeResourcesDomain, CHROME_RESOURCES },
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{ kChromeVersionDomain, CHROME_VERSION },
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};
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for (size_t i = 0; i < sizeof(domains) / sizeof(domains[0]); ++i) {
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if (base::EqualsCaseInsensitiveASCII(domains[i].name, domain_name.c_str()))
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return domains[i].domain;
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}
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return CHROME_UNKNOWN;
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}
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std::string GetOSType() {
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#if defined(OS_WIN)
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return "Windows";
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#elif defined(OS_MACOSX)
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return "Mac OS X";
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#elif defined(OS_CHROMEOS)
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return "Chromium OS";
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#elif defined(OS_ANDROID)
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return "Android";
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#elif defined(OS_LINUX)
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return "Linux";
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#elif defined(OS_FREEBSD)
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return "FreeBSD";
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#elif defined(OS_OPENBSD)
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return "OpenBSD";
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#elif defined(OS_SOLARIS)
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return "Solaris";
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#else
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return "Unknown";
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#endif
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}
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std::string GetCommandLine() {
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#if defined(OS_WIN)
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return base::WideToUTF8(
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base::CommandLine::ForCurrentProcess()->GetCommandLineString());
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#elif defined(OS_POSIX)
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std::string command_line = "";
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typedef std::vector<std::string> ArgvList;
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const ArgvList& argv = base::CommandLine::ForCurrentProcess()->argv();
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for (ArgvList::const_iterator iter = argv.begin(); iter != argv.end(); iter++)
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command_line += " " + *iter;
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// TODO(viettrungluu): |command_line| could really have any encoding, whereas
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// below we assumes it's UTF-8.
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return command_line;
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#endif
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}
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std::string GetModulePath() {
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base::FilePath path;
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if (PathService::Get(base::FILE_MODULE, &path))
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return CefString(path.value());
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return std::string();
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}
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class TemplateParser {
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public:
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TemplateParser()
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: ident_start_("$$"),
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ident_end_("$$") {
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}
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TemplateParser(const std::string& ident_start,
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const std::string& ident_end)
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: ident_start_(ident_start),
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ident_end_(ident_end) {
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}
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void Add(const std::string& key, const std::string& value) {
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values_.insert(std::make_pair(key, value));
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}
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void Parse(std::string* tmpl) {
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int start_pos, end_pos = 0;
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int ident_start_len = ident_start_.length();
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int ident_end_len = ident_end_.length();
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while(true) {
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start_pos = tmpl->find(ident_start_, end_pos);
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if (start_pos >= 0) {
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end_pos = tmpl->find(ident_end_, start_pos + ident_start_len);
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if (end_pos >= 0) {
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// Found an identifier. Check if a substitution exists.
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std::string key = tmpl->substr(start_pos + ident_start_len,
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end_pos - start_pos - ident_start_len);
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KeyMap::const_iterator it = values_.find(key);
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if (it != values_.end()) {
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// Peform the substitution.
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tmpl->replace(start_pos, end_pos + ident_end_len - start_pos,
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it->second);
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end_pos = start_pos + it->second.length();
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} else {
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// Leave the unknown identifier in place.
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end_pos += ident_end_len;
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}
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if (end_pos >= static_cast<int>(tmpl->length()) - ident_start_len -
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ident_end_len) {
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// Not enough room remaining for more identifiers.
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break;
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}
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} else {
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// No end identifier found.
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break;
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}
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} else {
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// No start identifier found.
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break;
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}
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}
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}
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private:
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typedef std::map<std::string, std::string> KeyMap;
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KeyMap values_;
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std::string ident_start_;
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std::string ident_end_;
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};
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// From content/browser/webui/shared_resources_data_source.cc.
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using ResourcesMap = base::hash_map<std::string, int>;
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// TODO(rkc): Once we have a separate source for apps, remove '*/apps/' aliases.
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const char* kPathAliases[][2] = {
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{"../../../third_party/polymer/v1_0/components-chromium/", "polymer/v1_0/"},
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{"../../../third_party/web-animations-js/sources/",
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"polymer/v1_0/web-animations-js/"},
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{"../../views/resources/default_100_percent/common/", "images/apps/"},
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{"../../views/resources/default_200_percent/common/", "images/2x/apps/"},
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{"../../webui/resources/cr_elements/", "cr_elements/"}};
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void AddResource(const std::string& path,
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int resource_id,
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ResourcesMap* resources_map) {
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if (!resources_map->insert(std::make_pair(path, resource_id)).second)
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NOTREACHED() << "Redefinition of '" << path << "'";
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}
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const ResourcesMap* CreateResourcesMap() {
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ResourcesMap* result = new ResourcesMap();
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for (size_t i = 0; i < kWebuiResourcesSize; ++i) {
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const std::string resource_name = kWebuiResources[i].name;
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const int resource_id = kWebuiResources[i].value;
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AddResource(resource_name, resource_id, result);
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for (const char* (&alias)[2]: kPathAliases) {
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if (base::StartsWith(resource_name, alias[0],
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base::CompareCase::SENSITIVE)) {
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AddResource(alias[1] + resource_name.substr(strlen(alias[0])),
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resource_id, result);
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}
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}
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}
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return result;
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}
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const ResourcesMap& GetResourcesMap() {
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// This pointer will be intentionally leaked on shutdown.
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static const ResourcesMap* resources_map = CreateResourcesMap();
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return *resources_map;
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}
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class Delegate : public InternalHandlerDelegate {
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public:
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Delegate() {}
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bool OnRequest(CefRefPtr<CefBrowser> browser,
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CefRefPtr<CefRequest> request,
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Action* action) override {
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GURL url = GURL(request->GetURL().ToString());
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std::string path = url.path();
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if (path.length() > 0)
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path = path.substr(1);
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bool handled = false;
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ChromeDomain domain = GetChromeDomain(url.host());
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switch (domain) {
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case CHROME_CREDITS:
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handled = OnCredits(path, action);
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break;
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case CHROME_LICENSE:
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handled = OnLicense(action);
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break;
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case CHROME_RESOURCES:
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handled = OnResources(path, action);
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break;
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case CHROME_VERSION:
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handled = OnVersion(browser, action);
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break;
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default:
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break;
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}
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if (!handled && domain != CHROME_VERSION) {
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LOG(INFO) << "Reguest for unknown chrome resource: " <<
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url.spec().c_str();
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if (domain != CHROME_RESOURCES) {
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action->redirect_url =
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GURL(std::string(kChromeURL) + kChromeVersionDomain);
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return true;
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}
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}
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return handled;
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}
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bool OnCredits(const std::string& path, Action* action) {
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if (path == "credits.js") {
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action->resource_id = IDR_ABOUT_UI_CREDITS_JS;
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} else {
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action->mime_type = "text/html";
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action->resource_id = IDR_ABOUT_UI_CREDITS_HTML;
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}
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return true;
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}
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bool OnLicense(Action* action) {
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base::StringPiece piece = CefContentClient::Get()->GetDataResource(
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IDR_CEF_LICENSE_TXT, ui::SCALE_FACTOR_NONE);
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if (piece.empty()) {
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NOTREACHED() << "Failed to load license txt resource.";
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return false;
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}
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std::string html = "<html><head><title>License</title></head><body><pre>" +
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piece.as_string() + "</pre></body></html>";
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action->mime_type = "text/html";
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action->stream = CefStreamReader::CreateForData(
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const_cast<char*>(html.c_str()), html.length());
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action->stream_size = html.length();
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return true;
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}
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bool OnResources(const std::string& path, Action* action) {
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// Implementation based on SharedResourcesDataSource::StartDataRequest.
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const ResourcesMap& resources_map = GetResourcesMap();
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auto it = resources_map.find(path);
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int resource_id = (it != resources_map.end()) ? it->second : -1;
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if (resource_id == -1) {
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NOTREACHED() << "Failed to find resource id for " << path;
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return false;
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}
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if (resource_id == IDR_WEBUI_CSS_TEXT_DEFAULTS ||
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resource_id == IDR_WEBUI_CSS_TEXT_DEFAULTS_MD) {
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const std::string& css = resource_id == IDR_WEBUI_CSS_TEXT_DEFAULTS ?
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webui::GetWebUiCssTextDefaults() : webui::GetWebUiCssTextDefaultsMd();
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DCHECK(!css.empty());
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action->mime_type = "text/css";
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action->stream = CefStreamReader::CreateForData(
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const_cast<char*>(css.c_str()), css.length());
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action->stream_size = css.length();
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} else {
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action->resource_id = resource_id;
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}
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return true;
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}
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bool OnVersion(CefRefPtr<CefBrowser> browser,
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Action* action) {
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base::StringPiece piece = CefContentClient::Get()->GetDataResource(
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IDR_CEF_VERSION_HTML, ui::SCALE_FACTOR_NONE);
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if (piece.empty()) {
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NOTREACHED() << "Failed to load version html resource.";
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return false;
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}
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TemplateParser parser;
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parser.Add("YEAR", MAKE_STRING(COPYRIGHT_YEAR));
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parser.Add("CEF", CEF_VERSION);
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parser.Add("CHROMIUM",
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base::StringPrintf("%d.%d.%d.%d",
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CHROME_VERSION_MAJOR,
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CHROME_VERSION_MINOR,
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CHROME_VERSION_BUILD,
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CHROME_VERSION_PATCH));
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parser.Add("OS", GetOSType());
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parser.Add("WEBKIT",
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base::StringPrintf("%d.%d",
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content::GetWebKitMajorVersion(),
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content::GetWebKitMinorVersion()));
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parser.Add("JAVASCRIPT", v8::V8::GetVersion());
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parser.Add("FLASH", std::string()); // Value populated asynchronously.
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parser.Add("USERAGENT", CefContentClient::Get()->GetUserAgent());
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parser.Add("COMMANDLINE", GetCommandLine());
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parser.Add("MODULEPATH", GetModulePath());
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parser.Add("CACHEPATH", browser.get() ?
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browser->GetHost()->GetRequestContext()->GetCachePath() : "");
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std::string tmpl = piece.as_string();
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parser.Parse(&tmpl);
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action->mime_type = "text/html";
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action->stream = CefStreamReader::CreateForData(
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const_cast<char*>(tmpl.c_str()), tmpl.length());
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action->stream_size = tmpl.length();
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return true;
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}
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};
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void DidFinishChromeVersionLoad(CefRefPtr<CefFrame> frame) {
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// Retieve Flash version information and update asynchronously.
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class Visitor : public CefWebPluginInfoVisitor {
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public:
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Visitor(CefRefPtr<CefFrame> frame)
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: frame_(frame) {
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}
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bool Visit(CefRefPtr<CefWebPluginInfo> info,
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int count, int total) override {
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std::string name = info->GetName();
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if (name == "Shockwave Flash") {
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if (frame_->IsValid()) {
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std::string version = info->GetVersion();
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frame_->ExecuteJavaScript(
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"document.getElementById('flash').innerText = '" + version + "';",
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std::string(), 0);
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}
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return false;
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}
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return true;
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}
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private:
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CefRefPtr<CefFrame> frame_;
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IMPLEMENT_REFCOUNTING(Visitor);
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};
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CefVisitWebPluginInfo(new Visitor(frame));
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}
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// Wrapper for a ChromeProtocolHandler instance from
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// content/browser/webui/url_data_manager_backend.cc.
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class ChromeProtocolHandlerWrapper :
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public net::URLRequestJobFactory::ProtocolHandler {
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public:
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ChromeProtocolHandlerWrapper(
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CefURLRequestManager* request_manager,
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scoped_ptr<net::URLRequestJobFactory::ProtocolHandler>
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chrome_protocol_handler)
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: request_manager_(request_manager),
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chrome_protocol_handler_(std::move(chrome_protocol_handler)) {
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DCHECK(request_manager_);
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}
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net::URLRequestJob* MaybeCreateJob(
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net::URLRequest* request,
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net::NetworkDelegate* network_delegate) const override {
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// Keep synchronized with the checks in
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// ChromeProtocolHandler::MaybeCreateJob.
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if (content::ViewHttpCacheJobFactory::IsSupportedURL(request->url()) ||
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(request->url().SchemeIs(content::kChromeUIScheme) &&
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request->url().host() == content::kChromeUIAppCacheInternalsHost) ||
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content::ViewBlobInternalsJobFactory::IsSupportedURL(request->url()) ||
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(request->url().SchemeIs(content::kChromeUIScheme) &&
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request->url().host() == content::kChromeUIHistogramHost)) {
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return chrome_protocol_handler_->MaybeCreateJob(request,
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network_delegate);
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}
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// Use the protocol handler registered with CEF.
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return request_manager_->GetRequestJob(request, network_delegate);
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}
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private:
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CefURLRequestManager* request_manager_;
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scoped_ptr<net::URLRequestJobFactory::ProtocolHandler>
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chrome_protocol_handler_;
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};
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} // namespace
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void RegisterChromeHandler(CefURLRequestManager* request_manager) {
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request_manager->AddFactory(
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content::kChromeUIScheme,
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std::string(),
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CreateInternalHandlerFactory(
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make_scoped_ptr<InternalHandlerDelegate>(new Delegate())));
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}
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bool WillHandleBrowserAboutURL(GURL* url,
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content::BrowserContext* browser_context) {
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std::string text = url->possibly_invalid_spec();
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if (text.find("about:") == 0 && text != "about:blank" && text.length() > 6) {
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// Redirect about: URLs to chrome://
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*url = GURL(kChromeURL + text.substr(6));
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}
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// Allow the redirection to proceed.
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return false;
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}
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void DidFinishChromeLoad(CefRefPtr<CefFrame> frame,
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const GURL& validated_url) {
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ChromeDomain domain = GetChromeDomain(validated_url.host());
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switch (domain) {
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case CHROME_VERSION:
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DidFinishChromeVersionLoad(frame);
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default:
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break;
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}
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}
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scoped_ptr<net::URLRequestJobFactory::ProtocolHandler>
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WrapChromeProtocolHandler(
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CefURLRequestManager* request_manager,
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scoped_ptr<net::URLRequestJobFactory::ProtocolHandler>
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chrome_protocol_handler) {
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scoped_ptr<net::URLRequestJobFactory::ProtocolHandler> ret(
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new ChromeProtocolHandlerWrapper(request_manager,
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std::move(chrome_protocol_handler)));
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return ret;
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}
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} // namespace scheme
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