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// Copyright (c) 2009 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.
#ifndef NET_PROXY_PROXY_CONFIG_SERVICE_LINUX_H_
#define NET_PROXY_PROXY_CONFIG_SERVICE_LINUX_H_
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "base/scoped_ptr.h"
#include "net/proxy/proxy_config_service.h"
#include "net/proxy/proxy_server.h"
namespace net {
// Implementation of ProxyConfigService that retrieves the system proxy
// settings from environment variables or gconf.
class ProxyConfigServiceLinux : public ProxyConfigService {
public:
// These are used to derive mocks for unittests.
class EnvironmentVariableGetter {
public:
virtual ~EnvironmentVariableGetter() {}
// Gets an environment variable's value and stores it in
// result. Returns false if the key is unset.
virtual bool Getenv(const char* variable_name, std::string* result) = 0;
};
class GConfSettingGetter {
public:
virtual ~GConfSettingGetter() {}
// GDK/GTK+ thread-safety: multi-threaded programs coordinate
// around a global lock. See
// http://library.gnome.org/devel/gdk/unstable/gdk-Threads.html
// and http://research.operationaldynamics.com/blogs/andrew/software/gnome-desktop/gtk-thread-awareness.html
// The following methods are used to grab said lock around any
// actual gconf usage: including calls to Init() and any of the
// Get* methods.
virtual void Enter() = 0;
virtual void Leave() = 0;
// Initializes the class: obtains a gconf client, in the concrete
// implementation. Returns true on success. Must be called before
// any of the Get* methods, and the Get* methods must not be used
// if this method returns false. This method may be called again,
// whether or not it succeeded before.
virtual bool InitIfNeeded() = 0;
// Gets a string type value from gconf and stores it in result. Returns
// false if the key is unset or on error.
virtual bool GetString(const char* key, std::string* result) = 0;
// Same thing for a bool typed value.
virtual bool GetBoolean(const char* key, bool* result) = 0;
// Same for an int typed value.
virtual bool GetInt(const char* key, int* result) = 0;
// And for a string list.
virtual bool GetStringList(const char* key,
std::vector<std::string>* result) = 0;
};
// Usual constructor
ProxyConfigServiceLinux();
// For testing: pass in alternate gconf and env var getter implementations.
// ProxyConfigServiceLinux takes ownership of the getter objects.
ProxyConfigServiceLinux(EnvironmentVariableGetter* env_var_getter,
GConfSettingGetter* gconf_getter);
// ProxyConfigService methods:
virtual int GetProxyConfig(ProxyConfig* config);
private:
// Obtains an environment variable's value. Parses a proxy server
// specification from it and puts it in result. Returns true if the
// requested variable is defined and the value valid.
bool GetProxyFromEnvVarForScheme(const char* variable,
ProxyServer::Scheme scheme,
ProxyServer* result_server);
// As above but with scheme set to HTTP, for convenience.
bool GetProxyFromEnvVar(const char* variable, ProxyServer* result_server);
// Parses entries from the value of the no_proxy env var, and stuffs
// them into config->proxy_bypass.
void ParseNoProxyList(const std::string& no_proxy, ProxyConfig* config);
// Fills proxy config from environment variables. Returns true if
// variables were found and the configuration is valid.
bool GetConfigFromEnv(ProxyConfig* config);
// Obtains host and port gconf settings and parses a proxy server
// specification from it and puts it in result. Returns true if the
// requested variable is defined and the value valid.
bool GetProxyFromGConf(const char* key_prefix, bool is_socks,
ProxyServer* result_server);
// Fills proxy config from gconf. Returns true if settings were found
// and the configuration is valid.
bool GetConfigFromGConf(ProxyConfig* config);
scoped_ptr<EnvironmentVariableGetter> env_var_getter_;
scoped_ptr<GConfSettingGetter> gconf_getter_;
DISALLOW_COPY_AND_ASSIGN(ProxyConfigServiceLinux);
};
} // namespace net
#endif // NET_PROXY_PROXY_CONFIG_SERVICE_LINUX_H_
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