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/*******************************************************************************
* libproxy - A library for proxy configuration
* Copyright (C) 2006 Nathaniel McCallum <nathaniel@natemccallum.com>
*
* 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 <cstdio> // For fileno(), fread(), pclose(), popen(), sscanf()
#include <sys/select.h> // For select(...)
#include <fcntl.h> // For fcntl(...)
#include "xhasclient.cpp" // For xhasclient(...)
/*
int popen2(const char *program, FILE **read, FILE **write) {
int wpipe[2];
if (!read || !write || !program || !*program)
return EINVAL;
*read = NULL;
*write = NULL;
if (pipe(wpipe) < 0)
return errno;
switch (pid = vfork()) {
case -1: // Error
close(wpipe[0]);
close(wpipe[1]);
return ASOIMWE;
case 0: // Child
close(wpipe[1]);
dup2(wpipe[0], STDIN_FILENO);
close(wpipe[0]);
execl(_PATH_BSHELL, "sh", "-c", program, (char *)NULL);
_exit(127);
// NOTREACHED
}
}
// Parent; assume fdopen can't fail.
if (*type == 'r') {
iop = fdopen(pdes[0], type);
(void)close(pdes[1]);
} else {
iop = fdopen(pdes[1], type);
(void)close(pdes[0]);
}
// Link into list of file descriptors.
cur->fp = iop;
cur->pid = pid;
cur->next = pidlist;
pidlist = cur;
return (iop);
}*/
#include "../module_types.hpp"
using namespace com::googlecode::libproxy;
static const char *_all_keys[] = {
"/system/proxy/mode", "/system/proxy/autoconfig_url",
"/system/http_proxy/host", "/system/http_proxy/port",
"/system/proxy/secure_host", "/system/proxy/secure_port",
"/system/proxy/ftp_host", "/system/proxy/ftp_port",
"/system/proxy/socks_host", "/system/proxy/socks_port",
"/system/http_proxy/ignore_hosts",
"/system/http_proxy/use_authentication",
"/system/http_proxy/authentication_user",
"/system/http_proxy/authentication_password",
NULL
};
class gnome_config_module : public config_module {
public:
PX_MODULE_ID(NULL);
PX_MODULE_CONFIG_CATEGORY(config_module::CATEGORY_SESSION);
gnome_config_module() {
int count;
string cmd = LIBEXECDIR "pxgconf";
for (count=0 ; _all_keys[count] ; count++)
cmd += string(" ", 1) + _all_keys[count];
this->pipe = popen(cmd.c_str(), "r");
if (!this->pipe)
throw io_error("Unable to open gconf helper!");
if (fcntl(fileno(this->pipe), F_SETFL, FNONBLOCK) == -1) {
pclose(this->pipe);
throw io_error("Unable to set pipe to non-blocking!");
}
this->update_data(count);
}
~gnome_config_module() {
if (this->pipe)
pclose(this->pipe);
}
url get_config(url dest) throw (runtime_error) {
// Check for changes in the config
if (this->pipe) this->update_data();
// Mode is wpad:// or pac+http://...
if (this->data["/system/proxy/mode"] == "auto") {
string pac = this->data["/system/proxy/autoconfig_url"];
return url::is_valid(pac) ? url(string("pac+") + pac) : url("wpad://");
}
// Mode is http://... or socks://...
else if (this->data["/system/proxy/mode"] == "manual") {
string type = "http", host, port;
bool auth = this->data["/system/http_proxy/use_authentication"] == "true";
string username = this->data["/system/http_proxy/authentication_user"];
string password = this->data["/system/http_proxy/authentication_password"];
uint16_t p = 0;
// Get the per-scheme proxy settings
if (dest.get_scheme() == "https") {
host = this->data["/system/proxy/secure_host"];
port = this->data["/system/proxy/secure_port"];
if (sscanf(port.c_str(), "%hu", &p) != 1) p = 0;
}
else if (dest.get_scheme() == "ftp") {
host = this->data["/system/proxy/ftp_host"];
port = this->data["/system/proxy/ftp_port"];
if (sscanf(port.c_str(), "%hu", &p) != 1) p = 0;
}
if (host == "" || p == 0)
{
host = this->data["/system/http_proxy/host"];
port = this->data["/system/http_proxy/port"];
if (sscanf(port.c_str(), "%hu", &p) != 1) p = 0;
}
// If http(s)/ftp proxy is not set, try socks
if (host == "" || p == 0)
{
host = this->data["/system/proxy/socks_host"];
port = this->data["/system/proxy/socks_port"];
if (sscanf(port.c_str(), "%hu", &p) != 1) p = 0;
}
// If host and port were found, build config url
if (host != "" && p != 0) {
string tmp = type + "://";
if (auth)
tmp += username + ":" + password + "@";
tmp += host + ":" + port;
return url(tmp);
}
}
// Mode is direct://
return url("direct://");
}
string get_ignore(url url) {
return this->data["/system/http_proxy/ignore_hosts"];
}
private:
FILE *pipe;
map<string, string> data;
string readline(string buffer="") {
char c;
// If the fread() call would block, an error occurred or
// we are at the end of the line, we're done
if (fread(&c, sizeof(char), 1, this->pipe) != 1 || c == '\n')
return buffer;
// Process the next character
return this->readline(buffer + string(&c, 1));
}
// This method attempts to update data
// If called with no arguments, it will check for new data (sleeping for <=1000
// useconds) and returning true or false depending on if at least one line of
// data was found.
// However, if req > 0, we will keep checking for new lines (at 1000 usec ivals)
// until enough lines are found. This allows us to wait for *all* the initial
// values to be read in before we start processing gconf requests.
bool update_data(int req=0, int found=0) {
// If we have collected the correct number of lines, return true
if (req > 0 && found >= req)
return true;
// We need the pipe to be open
if (!this->pipe) return false;
fd_set rfds;
struct timeval timeout = { 0, 1000 };
FD_ZERO(&rfds);
FD_SET(fileno(this->pipe), &rfds);
if (select(fileno(this->pipe)+1, &rfds, NULL, NULL, &timeout) < 1)
return req > 0 ? this->update_data(req, found) : false; // If we still haven't met
// our req quota, try again
bool retval = false;
for (string line = this->readline() ; line != "" ; line = this->readline()) {
string key = line.substr(0, line.find("\t"));
string val = line.substr(line.find("\t")+1);
this->data[key] = val;
retval = ++found > req;
}
return (this->update_data(req, found) || retval);
}
};
// If we are running in GNOME, then make sure this plugin is registered.
extern "C" bool px_module_load(module_manager& mm) {
if (xhasclient("gnome-session", "gnome-settings-daemon", "gnome-panel", NULL)) {
try { return mm.register_module<config_module>(new gnome_config_module); }
catch (io_error) { return false; }
}
}
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