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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/nacl_host/nacl_browser_delegate_impl.h"
#include <stddef.h>
#include <algorithm>
#include <vector>
#include "base/functional/bind.h"
#include "base/path_service.h"
#include "base/strings/string_split.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/component_updater/pnacl_component_installer.h"
#include "chrome/browser/nacl_host/nacl_infobar_delegate.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chrome/browser/renderer_host/pepper/chrome_browser_pepper_host_factory.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/chrome_paths_internal.h"
#include "chrome/common/logging_chrome.h"
#include "chrome/common/pepper_permission_util.h"
#include "components/infobars/content/content_infobar_manager.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "extensions/buildflags/buildflags.h"
#include "url/gurl.h"
#if BUILDFLAG(ENABLE_EXTENSIONS)
#include "chrome/browser/extensions/extension_service.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/browser/extension_system.h"
#include "extensions/browser/extension_util.h"
#include "extensions/browser/process_manager.h"
#include "extensions/common/constants.h"
#include "extensions/common/extension.h"
#include "extensions/common/url_pattern.h"
#endif
NaClBrowserDelegateImpl::NaClBrowserDelegateImpl(
ProfileManager* profile_manager)
: profile_manager_(profile_manager), inverse_debug_patterns_(false) {
DCHECK(profile_manager_);
}
NaClBrowserDelegateImpl::~NaClBrowserDelegateImpl() = default;
void NaClBrowserDelegateImpl::ShowMissingArchInfobar(int render_process_id,
int render_frame_id) {
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(&CreateInfoBarOnUiThread, render_process_id,
render_frame_id));
}
bool NaClBrowserDelegateImpl::DialogsAreSuppressed() {
return logging::DialogsAreSuppressed();
}
bool NaClBrowserDelegateImpl::GetCacheDirectory(base::FilePath* cache_dir) {
base::FilePath user_data_dir;
if (!base::PathService::Get(chrome::DIR_USER_DATA, &user_data_dir))
return false;
chrome::GetUserCacheDirectory(user_data_dir, cache_dir);
return true;
}
bool NaClBrowserDelegateImpl::GetPluginDirectory(base::FilePath* plugin_dir) {
return base::PathService::Get(chrome::DIR_INTERNAL_PLUGINS, plugin_dir);
}
bool NaClBrowserDelegateImpl::GetPnaclDirectory(base::FilePath* pnacl_dir) {
return base::PathService::Get(chrome::DIR_PNACL_COMPONENT, pnacl_dir);
}
bool NaClBrowserDelegateImpl::GetUserDirectory(base::FilePath* user_dir) {
return base::PathService::Get(chrome::DIR_USER_DATA, user_dir);
}
std::string NaClBrowserDelegateImpl::GetVersionString() const {
return chrome::kChromeVersion;
}
ppapi::host::HostFactory* NaClBrowserDelegateImpl::CreatePpapiHostFactory(
content::BrowserPpapiHost* ppapi_host) {
return new ChromeBrowserPepperHostFactory(ppapi_host);
}
void NaClBrowserDelegateImpl::SetDebugPatterns(
const std::string& debug_patterns) {
#if BUILDFLAG(ENABLE_EXTENSIONS)
if (debug_patterns.empty()) {
return;
}
std::vector<std::string> patterns;
if (debug_patterns[0] == '!') {
std::string negated_patterns = debug_patterns;
inverse_debug_patterns_ = true;
negated_patterns.erase(0, 1);
patterns = base::SplitString(
negated_patterns, ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
} else {
patterns = base::SplitString(
debug_patterns, ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
}
for (const std::string& pattern_str : patterns) {
// Allow chrome:// schema, which is used to filter out the internal
// PNaCl translator. Also allow chrome-extension:// schema (which
// can have NaCl modules). The default is to disallow these schema
// since they can be dangerous in the context of chrome extension
// permissions, but they are okay here, for NaCl GDB avoidance.
URLPattern pattern(URLPattern::SCHEME_ALL);
if (pattern.Parse(pattern_str) == URLPattern::ParseResult::kSuccess) {
// If URL pattern has scheme equal to *, Parse method resets valid
// schemes mask to http and https only, so we need to reset it after
// Parse to re-include chrome-extension and chrome schema.
pattern.SetValidSchemes(URLPattern::SCHEME_ALL);
debug_patterns_.push_back(pattern);
}
}
#endif // BUILDFLAG(ENABLE_EXTENSIONS)
}
bool NaClBrowserDelegateImpl::URLMatchesDebugPatterns(
const GURL& manifest_url) {
#if BUILDFLAG(ENABLE_EXTENSIONS)
// Empty patterns are forbidden so we ignore them.
if (debug_patterns_.empty()) {
return true;
}
bool matches = false;
for (auto iter = debug_patterns_.begin(); iter != debug_patterns_.end();
++iter) {
if (iter->MatchesURL(manifest_url)) {
matches = true;
break;
}
}
if (inverse_debug_patterns_) {
return !matches;
} else {
return matches;
}
#else
return false;
#endif // BUILDFLAG(ENABLE_EXTENSIONS)
}
// This function is security sensitive. Be sure to check with a security
// person before you modify it.
NaClBrowserDelegate::MapUrlToLocalFilePathCallback
NaClBrowserDelegateImpl::GetMapUrlToLocalFilePathCallback(
const base::FilePath& profile_directory) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
#if BUILDFLAG(ENABLE_EXTENSIONS)
auto extensions = std::make_unique<extensions::ExtensionSet>();
extensions->InsertAll(
extensions::ExtensionRegistry::Get(
profile_manager_->GetProfileByPath(profile_directory))
->enabled_extensions());
return base::BindRepeating(&extensions::util::MapUrlToLocalFilePath,
base::Owned(std::move(extensions)));
#else
return base::BindRepeating([](const GURL& url, bool use_blocking_api,
base::FilePath* file_path) { return false; });
#endif
}
// static
void NaClBrowserDelegateImpl::CreateInfoBarOnUiThread(int render_process_id,
int render_frame_id) {
content::RenderFrameHost* rfh =
content::RenderFrameHost::FromID(render_process_id, render_frame_id);
if (!rfh)
return;
content::WebContents* web_contents =
content::WebContents::FromRenderFrameHost(rfh);
if (!web_contents)
return;
infobars::ContentInfoBarManager* infobar_manager =
infobars::ContentInfoBarManager::FromWebContents(web_contents);
if (infobar_manager)
NaClInfoBarDelegate::Create(infobar_manager);
}
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