SharedProxy GetProxyForURL(string& url)
{
static Logger* logger = GetLogger();
URI uri(url);
// Don't try to detect proxy settings for URLs we know are local
std::string scheme(uri.getScheme());
if (scheme == "app" || scheme == "ti" || scheme == "file")
return 0;
if (scheme == "http" && !httpProxyOverride.isNull())
return httpProxyOverride;
if (scheme == "https" && !httpsProxyOverride.isNull())
return httpsProxyOverride;
SharedProxy environmentProxy(GetProxyFromEnvironment(scheme));
if (!environmentProxy.isNull())
{
logger->Debug("Found proxy (%s) in environment",
environmentProxy->ToString().c_str());
return environmentProxy;
}
logger->Debug("Looking up proxy information for: %s", url.c_str());
SharedProxy proxy(ProxyConfig::GetProxyForURLImpl(uri));
if (proxy.isNull())
logger->Debug("Using direct connection.");
else
logger->Debug("Using proxy: %s", proxy->ToString().c_str());
return proxy;
}
void Network::_GetHTTPSProxy(const ValueList& args, KValueRef result)
{
SharedProxy proxy = ProxyConfig::GetHTTPSProxyOverride();
if (proxy.isNull())
result->SetNull();
else
result->SetString(proxy->ToString().c_str());
}
SharedPtr<Proxy> GetProxyForURLImpl(URI& uri)
{
InitializeWin32ProxyConfig();
std::string url(uri.toString());
// The auto proxy configuration might tell us to simply use
// a direct connection, which should cause us to just return
// null. Otherwise we should try to use the IE proxy list (next block)
if (useProxyAutoConfig || !autoConfigURL.empty())
{
std::vector<SharedProxy> autoProxies;
bool shouldUseIEProxy = GetAutoProxiesForURL(url, autoProxies);
for (int i = 0; i < autoProxies.size(); i++)
{
SharedProxy proxy = autoProxies.at(i);
if (proxy->ShouldBypass(uri))
{
return 0;
}
else if (proxy->info->getScheme().empty() ||
proxy->info->getScheme() == uri.getScheme())
{
return proxy;
}
}
if (!shouldUseIEProxy)
return 0;
}
// Try the IE proxy list
for (int i = 0; i < ieProxies.size(); i++)
{
SharedProxy proxy = ieProxies.at(i);
std::string proxyScheme = proxy->info->getScheme();
if (proxy->ShouldBypass(uri))
{
return 0;
}
else if (proxyScheme.empty() || proxyScheme == uri.getScheme())
{
return proxy;
}
}
return 0;
}
SharedProxy GetProxyForURL(string& url)
{
URI uri(url);
// Don't try to detect proxy settings for URLs we know are local
std::string scheme(uri.getScheme());
if (scheme == "app" || scheme == "ti" || scheme == "file")
return 0;
if (scheme == "http" && !httpProxyOverride.isNull())
return httpProxyOverride;
if (scheme == "https" && !httpsProxyOverride.isNull())
return httpsProxyOverride;
return ProxyConfig::GetProxyForURLImpl(uri);
}
namespace ProxyConfig
{
SharedProxy httpProxyOverride(0);
SharedProxy httpsProxyOverride(0);
void SetHTTPProxyOverride(SharedProxy newProxyOverride)
{
httpProxyOverride = newProxyOverride;
}
SharedProxy GetHTTPProxyOverride()
{
return httpProxyOverride;
}
void SetHTTPSProxyOverride(SharedProxy newProxyOverride)
{
httpsProxyOverride = newProxyOverride;
}
SharedProxy GetHTTPSProxyOverride()
{
return httpsProxyOverride;
}
SharedProxy GetProxyForURL(string& url)
{
URI uri(url);
// Don't try to detect proxy settings for URLs we know are local
std::string scheme(uri.getScheme());
if (scheme == "app" || scheme == "ti" || scheme == "file")
return 0;
if (scheme == "http" && !httpProxyOverride.isNull())
return httpProxyOverride;
if (scheme == "https" && !httpsProxyOverride.isNull())
return httpsProxyOverride;
return ProxyConfig::GetProxyForURLImpl(uri);
}
}
namespace ProxyConfig
{
SharedProxy httpProxyOverride(0);
SharedProxy httpsProxyOverride(0);
void SetHTTPProxyOverride(SharedProxy newProxyOverride)
{
httpProxyOverride = newProxyOverride;
}
SharedProxy GetHTTPProxyOverride()
{
return httpProxyOverride;
}
void SetHTTPSProxyOverride(SharedProxy newProxyOverride)
{
httpsProxyOverride = newProxyOverride;
}
SharedProxy GetHTTPSProxyOverride()
{
return httpsProxyOverride;
}
SharedProxy GetProxyForURL(string& url)
{
static Logger* logger = GetLogger();
URI uri(url);
// Don't try to detect proxy settings for URLs we know are local
std::string scheme(uri.getScheme());
if (scheme == "app" || scheme == "ti" || scheme == "file")
return 0;
if (scheme == "http" && !httpProxyOverride.isNull())
return httpProxyOverride;
if (scheme == "https" && !httpsProxyOverride.isNull())
return httpsProxyOverride;
SharedProxy environmentProxy(GetProxyFromEnvironment(scheme));
if (!environmentProxy.isNull())
{
logger->Debug("Found proxy (%s) in environment",
environmentProxy->ToString().c_str());
return environmentProxy;
}
logger->Debug("Looking up proxy information for: %s", url.c_str());
SharedProxy proxy(ProxyConfig::GetProxyForURLImpl(uri));
if (proxy.isNull())
logger->Debug("Using direct connection.");
else
logger->Debug("Using proxy: %s", proxy->ToString().c_str());
return proxy;
}
static inline bool EndsWith(string haystack, string needle)
{
return haystack.find(needle) == (haystack.size() - needle.size());
}
static bool ShouldBypassWithEntry(URI& uri, SharedPtr<BypassEntry> entry)
{
const std::string& uriHost = uri.getHost();
const std::string& uriScheme = uri.getScheme();
unsigned short uriPort = uri.getPort();
const std::string& entryHost = entry->host;
const std::string& entryScheme = entry->scheme;
unsigned short entryPort = entry->port;
GetLogger()->Debug("bypass entry: scheme='%s' host='%s' port='%i'",
entry->scheme.c_str(), entry->host.c_str(), entry->port);
// An empty bypass entry equals an unconditional bypass.
if (entry.isNull())
{
return true;
}
else
{
if (entryHost == "<local>" && uriHost.find(".") == string::npos)
{
return true;
}
else if (EndsWith(uriHost, entryHost) &&
(entryScheme.empty() || entryScheme == uriScheme) &&
(entryPort == 0 || entryPort == uriPort))
{
return true;
}
}
return false;
}
bool ShouldBypass(URI& uri, vector<SharedPtr<BypassEntry> >& bypassList)
{
GetLogger()->Debug("Checking whether %s should be bypassed.",
uri.toString().c_str());
for (size_t i = 0; i < bypassList.size(); i++)
{
if (ShouldBypassWithEntry(uri, bypassList.at(i)))
return true;
}
GetLogger()->Debug("No bypass");
return false;
}
SharedPtr<BypassEntry> ParseBypassEntry(string entry)
{
// Traditionally an endswith comparison is always done with the host
// part, so we throw away explicit wildcards at the beginning. If the
// entire string is a wildcard this is an unconditional bypass.
if (entry.at(0) == '*' && entry.size() == 1)
{
// Null URI means always bypass
return 0;
}
else if (entry.at(0) == '*' && entry.size() > 1)
{
entry = entry.substr(1);
}
SharedPtr<BypassEntry> bypass(new BypassEntry());
size_t endScheme = entry.find("://");
if (endScheme != string::npos)
{
bypass->scheme = entry.substr(0, endScheme);
entry = entry.substr(endScheme + 3);
}
size_t scan = entry.size() - 1;
while (scan > 0 && isdigit(entry[scan]))
scan--;
if (entry[scan] == ':' && scan != entry.size() - 1)
{
string portString = entry.substr(scan + 1);
bypass->port = atoi(portString.c_str());
entry = entry.substr(0, scan);
}
bypass->host = entry;
return bypass;
}
Logger* GetLogger()
{
static Logger* logger = Logger::Get("Proxy");
return logger;
}
SharedProxy ParseProxyEntry(string entry, const string& urlScheme,
const string& entryScheme)
{
// If the hostname came with a scheme:// speicifier, read this,
// though it has lower precedence than the other two places the
// scheme can be defined.
entry = FileUtils::Trim(entry);
size_t schemeEnd = entry.find("://");
std::string hostScheme;
if (schemeEnd != string::npos)
{
hostScheme = entry.substr(0, schemeEnd);
entry = entry.substr(schemeEnd + 3);
}
// We need to pull out the credentials before the port, because
// the port just searches for the first ':', which can be in the
// credentials section.
string username, password;
size_t credentialsEnd = entry.find('@');
if (credentialsEnd != string::npos && credentialsEnd > 0 && entry.size() > 1)
{
username = entry.substr(0, credentialsEnd);
entry = entry.substr(credentialsEnd + 1);
size_t usernameEnd = username.find(':');
if (usernameEnd != string::npos)
{
password = username.substr(usernameEnd + 1);
username = username.substr(0, usernameEnd);
}
}
size_t portStart = entry.find(':');
unsigned port = 0;
if (portStart != string::npos && portStart != entry.size())
{
std::string portString(entry.substr(portStart + 1));
entry = entry.substr(0, portStart);
try
{
portString = FileUtils::Trim(portString);
port = NumberParser::parseUnsigned(portString);
}
catch (Poco::SyntaxException& e)
{
port = 0;
}
}
std::string scheme;
if (!entryScheme.empty())
scheme = entryScheme;
else if (!hostScheme.empty())
scheme = hostScheme;
else
scheme = urlScheme;
if (scheme == "direct")
return 0;
SharedProxy proxy = new Proxy();
proxy->type = Proxy::SchemeToProxyType(scheme);
proxy->host = FileUtils::Trim(entry);
proxy->port = port;
if (!username.empty())
proxy->username = username;
if (!password.empty())
proxy->password = password;
return proxy;
}
void ParseProxyList(string proxyListString,
vector<SharedProxy>& proxyList, const string& urlScheme)
{
string sep = "; ";
StringTokenizer proxyTokens(proxyListString, sep,
StringTokenizer::TOK_IGNORE_EMPTY | StringTokenizer::TOK_TRIM);
for (size_t i = 0; i < proxyTokens.count(); i++)
{
string entry = proxyTokens[i];
// If this entry defines a scheme, make it override the argument.
string entryScheme;
size_t schemeEnd = entry.find('=');
if (schemeEnd != string::npos)
{
// This proxy only applies to the scheme before '='
entryScheme = entry.substr(0, schemeEnd);
entry = entry.substr(schemeEnd + 1);
}
SharedProxy proxy(ParseProxyEntry(entry, urlScheme, entryScheme));
GetLogger()->Debug("Proxy entry: %s", proxy->ToString().c_str());
proxyList.push_back(proxy);
}
}
} // namespace ProxyConfig
