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/*******************************************************************************
* libproxy sysconfig module
* Copyright (C) 2010 Novell Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
******************************************************************************/
#include <sys/stat.h>
#include <cstdlib>
#include <map>
#include <fstream>
#include <unistd.h>
#include <sys/types.h>
#include "../extension_config.hpp"
using namespace libproxy;
using std::map;
enum Trim {
NO_TRIM = 0x00,
L_TRIM = 0x01,
R_TRIM = 0x02,
TRIM = (L_TRIM|R_TRIM)
};
static std::string trim( const std::string & s, const Trim trim_r = TRIM ) {
if (s.empty() || trim_r == NO_TRIM)
return s;
std::string ret(s);
if (trim_r & L_TRIM) {
std::string::size_type p = ret.find_first_not_of(" \t\n");
if (p == std::string::npos)
return std::string();
ret = ret.substr(p);
}
if (trim_r & R_TRIM) {
std::string::size_type p = ret.find_last_not_of(" \t\n");
if (p == std::string::npos)
return std::string();
ret = ret.substr(0, p+1);
}
return ret;
}
static map<string,string> sysconfig_read(const string &_path) {
map<string,string> ret;
string line;
ifstream in(_path.c_str());
if (in.fail()) {
return ret;
}
while(getline( in, line)) {
if (*line.begin() != '#') {
string::size_type pos = line.find('=', 0);
if (pos != string::npos) {
string key = trim(line.substr(0, pos));
string value = trim(line.substr(pos + 1, line.length() - pos - 1));
if (value.length() >= 2
&& *(value.begin()) == '"'
&& *(value.rbegin()) == '"') {
value = value.substr( 1, value.length() - 2 );
}
if (value.length() >= 2
&& *(value.begin()) == '\''
&& *(value.rbegin()) == '\'' ) {
value = value.substr( 1, value.length() - 2 );
}
ret[key] = value;
} // '=' found
} // not comment
} // while getline
return ret;
}
static bool should_use_sysconfig()
{
struct stat st;
if (stat("/etc/sysconfig", &st) == 0)
return (getuid() == 0);
return false;
}
class sysconfig_config_extension : public config_extension {
map<string,string> _data;
public:
sysconfig_config_extension()
: _data(sysconfig_read("/etc/sysconfig/proxy")) {
}
~sysconfig_config_extension() {
}
vector<url> get_config(const url &dst) {
map<string,string>::const_iterator it = _data.find("PROXY_ENABLED");
vector<url> response;
if (it != _data.end() && it->second == "no") {
response.push_back(url("direct://"));
return response;
}
string key;
string proxy;
// If the URL is an ftp url, try to read the ftp proxy
if (dst.get_scheme() == "ftp")
key = "FTP_PROXY";
else if (dst.get_scheme() == "http")
key = "HTTP_PROXY";
else if (dst.get_scheme() == "https")
key = "HTTPS_PROXY";
it = _data.find(key);
if (it != _data.end())
proxy = it->second;
if (proxy.empty())
throw runtime_error("Unable to read configuration");
response.push_back(url(proxy));
return response;
}
string get_ignore(const url&) {
map<string,string>::const_iterator it = _data.find("NO_PROXY");
if (it != _data.end())
return it->second;
return "";
}
// if we are running as root, and the module is used, then
// make sure this is the first method tried
virtual bool operator<(const base_extension&) const {
return true;
}
};
MM_MODULE_INIT_EZ(sysconfig_config_extension, should_use_sysconfig(), NULL, NULL);
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