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// Copyright 2014 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/media/webrtc/media_stream_device_permissions.h"
#include <stddef.h>
#include "base/logging.h"
#include "base/values.h"
#include "chrome/browser/profiles/profile.h"
#include "components/content_settings/core/browser/host_content_settings_map.h"
#include "components/content_settings/core/common/content_settings_pattern.h"
#include "components/prefs/pref_service.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/common/origin_util.h"
#include "extensions/common/constants.h"
#include "url/gurl.h"
MediaStreamDevicePolicy GetDevicePolicy(const Profile* profile,
const GURL& security_origin,
const char* policy_name,
const char* allowed_urls_pref_name) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
// If the security origin policy matches a value in allowed urls list, allow
// it. Otherwise, check the |policy_name| switch for the default behavior.
const PrefService* prefs = profile->GetPrefs();
const base::Value::List& list = prefs->GetList(allowed_urls_pref_name);
for (const base::Value& i : list) {
const std::string* value = i.GetIfString();
if (value) {
ContentSettingsPattern pattern =
ContentSettingsPattern::FromString(*value);
if (pattern == ContentSettingsPattern::Wildcard()) {
DLOG(WARNING) << "Ignoring wildcard URL pattern: " << *value;
continue;
}
DLOG_IF(ERROR, !pattern.IsValid()) << "Invalid URL pattern: " << *value;
if (pattern.IsValid() && pattern.Matches(security_origin))
return ALWAYS_ALLOW;
}
}
// If a match was not found, check if audio capture is otherwise disallowed
// or if the user should be prompted. Setting the policy value to "true"
// is equal to not setting it at all, so from hereon out, we will return
// either POLICY_NOT_SET (prompt) or ALWAYS_DENY (no prompt, no access).
if (!prefs->GetBoolean(policy_name))
return ALWAYS_DENY;
return POLICY_NOT_SET;
}
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