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MeshAgent/modules/proxy-helper.js
Bryan Roe b484cf9815 Updated proxy detection algorithm on Linux.
2020-08-27 13:14:11 -07:00

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/*
Copyright 2019 - 2020 Intel Corporation
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
function linux_getProxy()
{
console.info1('Checking Proxies [LINUX]');
// Check Environment Variabels
if(require('fs').existsSync('/etc/environment'))
{
console.info1('Checking global environment settings');
var child = require('child_process').execFile('/bin/sh', ['sh']);
child.stdout.str = ''; child.stdout.on('data', function (c) { this.str += c.toString(); });
child.stdin.write('cat /etc/environment | grep = | ' + "tr '\\n' '`' | awk -F'`' '");
child.stdin.write('{');
child.stdin.write(' host=""; port=""; username=""; password=""; ')
child.stdin.write(' for(i=1;i<NF;++i)');
child.stdin.write(' {');
child.stdin.write(' if($i~/^#/) { continue; }');
child.stdin.write(' split($i,tokens,"=");');
child.stdin.write(' if(tokens[1]=="HTTP_PROXY")');
child.stdin.write(' { ');
child.stdin.write(' proxy=substr($i,2+length(tokens[1]));');
child.stdin.write(' printf "http://%s", proxy;');
child.stdin.write(' break;');
child.stdin.write(' } ');
child.stdin.write(' }');
child.stdin.write("}'\nexit\n");
child.waitExit();
if (child.stdout.str.trim() != '')
{
console.info1(' => FOUND: ' + child.stdout.str.trim());
return (child.stdout.str.trim());
}
}
// Check profile.d
if(require('fs').existsSync('/etc/profile.d/proxy_setup'))
{
console.info1('Checking profile.d');
var child = require('child_process').execFile('/bin/sh', ['sh']);
child.stdout.str = ''; child.stdout.on('data', function (c) { this.str += c.toString(); });
child.stdin.write("cat /etc/profile.d/proxy_setup | awk '" + '{ split($2, tok, "="); if(tok[1]=="http_proxy") { print tok[2]; }}\'\nexit\n');
child.waitExit();
console.info1(' => FOUND: ' + child.stdout.str.trim().split('\n')[0]);
return (child.stdout.str.trim().split('\n')[0]);
}
// check apt proxy setting fro /etc/apt/apt.conf.d/proxy.conf
if (require('fs').existsSync('/etc/apt/apt.conf.d/proxy.conf'))
{
console.info1('Checking apt package manager settings [proxy.conf]');
var child = require('child_process').execFile('/bin/sh', ['sh']);
child.stdout.str = ''; child.stdout.on('data', function (c) { this.str += c.toString(); });
child.stderr.on('data', function (c) { console.log(c.toString()); });
child.stdin.write("cat /etc/apt/apt.conf.d/proxy.conf | tr '\\n' '`' | awk -F'`' '");
child.stdin.write('{');
child.stdin.write(' for(n=1;n<NF;++n) ');
child.stdin.write(' {');
child.stdin.write(' if($n~/^#/) { continue; }')
child.stdin.write(' if($n~/^Acquire::http::proxy /)');
child.stdin.write(' {');
child.stdin.write(' split($n, dummy, "Acquire::http::proxy ");');
child.stdin.write(' print substr(dummy[2],2,length(dummy[2])-3);');
child.stdin.write(' break;');
child.stdin.write(' }');
child.stdin.write(' }');
child.stdin.write("}'\nexit\n");
child.waitExit();
if (child.stdout.str.trim() != "")
{
console.info1(' => FOUND: ' + child.stdout.str.trim());
return (child.stdout.str.trim());
}
}
// check apt proxy setting from /etc/apt/apt/apt.conf
if (require('fs').existsSync('/etc/apt/apt.conf'))
{
console.info1('Checking apt package manager settings [apt.conf]');
var child = require('child_process').execFile('/bin/sh', ['sh']);
child.stdout.str = ''; child.stdout.on('data', function (c) { this.str += c.toString(); });
child.stderr.on('data', function (c) { console.log(c.toString()); });
child.stdin.write("cat /etc/apt/apt.conf | tr '\\n' '`' | awk -F'`' '");
child.stdin.write('{');
child.stdin.write(' for(n=1;n<NF;++n) ');
child.stdin.write(' {');
child.stdin.write(' if($n~/^#/) { continue; }')
child.stdin.write(' if($n~/^Acquire::http::proxy /)');
child.stdin.write(' {');
child.stdin.write(' split($n, dummy, "Acquire::http::proxy ");');
child.stdin.write(' print substr(dummy[2],2,length(dummy[2])-3);');
child.stdin.write(' break;');
child.stdin.write(' }');
child.stdin.write(' }');
child.stdin.write("}'\nexit\n");
child.waitExit();
if (child.stdout.str.trim() != "")
{
console.info1(' => FOUND: ' + child.stdout.str.trim());
return (child.stdout.str.trim());
}
}
// check yum proxy setting
if (require('fs').existsSync('/etc/yum.conf'))
{
console.info1('Checking yum package manager settings');
var child = require('child_process').execFile('/bin/sh', ['sh']);
child.stdout.str = ''; child.stdout.on('data', function (c) { this.str += c.toString(); });
child.stderr.on('data', function (c) { console.log(c.toString()); });
child.stdin.write('cat /etc/yum.conf | grep "proxy" | ' + "tr '\\n' '`' | awk -F'`' '");
child.stdin.write('{');
child.stdin.write(' host=""; port=""; username=""; password="";');
child.stdin.write(' for(n=1;n<NF;++n)');
child.stdin.write(' {');
child.stdin.write(' if($n~/^#/) { continue; }');
child.stdin.write(' split($n,tokens,"=");');
child.stdin.write(' if(tokens[1]=="proxy")');
child.stdin.write(' {');
child.stdin.write(' split(tokens[2],dummy,"://");');
child.stdin.write(' split(dummy[2],url,":");');
child.stdin.write(' host = url[1];');
child.stdin.write(' port = url[2]; if(port=="") { port = "8080"; }');
child.stdin.write(' }');
child.stdin.write(' if(tokens[1]=="proxy_username") { username = tokens[2]; }');
child.stdin.write(' if(tokens[1]=="proxy_password") { password = tokens[2]; }');
child.stdin.write(' }');
child.stdin.write(' if(host!="" && port!="")');
child.stdin.write(' {');
child.stdin.write(' if(username!="" && password!="")');
child.stdin.write(' {');
child.stdin.write(' printf "http://%s:%s@%s:%s", username, password, host, port; ');
child.stdin.write(' }');
child.stdin.write(' else');
child.stdin.write(' {');
child.stdin.write(' printf "http://%s:%s", host, port; ');
child.stdin.write(' }');
child.stdin.write(' }');
child.stdin.write("}'\nexit\n");
child.waitExit();
if (child.stdout.str.trim() != "")
{
console.info1(' => FOUND: ' + child.stdout.str.trim());
return (child.stdout.str.trim());
}
}
// openSUSE proxy setting
if (require('fs').existsSync('/etc/sysconfig/proxy'))
{
console.info1('Checking sysconfig settings');
var child = require('child_process').execFile('/bin/sh', ['sh']);
child.stdout.str = ''; child.stdout.on('data', function (c) { this.str += c.toString(); });
child.stderr.on('data', function (c) { });
child.stdin.write('cat /etc/sysconfig/proxy /root/.curlrc | grep = | ' + "tr '\\n' '`' | awk -F'`' '");
child.stdin.write('{');
child.stdin.write(' proxy=""; enabled=""; username=""; password=""; ')
child.stdin.write(' for(i=1;i<NF;++i)');
child.stdin.write(' {');
child.stdin.write(' if($i~/^#/) { continue; }');
child.stdin.write(' split($i,tokens,"=");');
child.stdin.write(' if(tokens[1]=="PROXY_ENABLED")');
child.stdin.write(' {');
child.stdin.write(' split(tokens[2],dummy,"\\"");');
child.stdin.write(' enabled = dummy[2];');
child.stdin.write(' }');
child.stdin.write(' if(tokens[1]=="HTTP_PROXY")');
child.stdin.write(' { ');
child.stdin.write(' split(tokens[2],dummy,"\\"");');
child.stdin.write(' proxy = dummy[2];');
child.stdin.write(' } ');
child.stdin.write(' if(tokens[1]~/^proxy-user/)');
child.stdin.write(' {');
child.stdin.write(' cred = substr($i,1+index($i,"="));');
child.stdin.write(' cred = substr(cred, index(cred, "\\""));');
child.stdin.write(' if(cred~/^"/) { cred = substr(cred,2,length(cred)-2); }');
child.stdin.write(' username=substr(cred,0,index(cred,":")-1);');
child.stdin.write(' password=substr(cred,1+index(cred,":"));');
child.stdin.write(' }');
child.stdin.write(' }');
child.stdin.write(' if(enabled=="yes" && proxy!="") ');
child.stdin.write(' {');
child.stdin.write(' if(username=="" || password=="") ');
child.stdin.write(' {');
child.stdin.write(' print proxy;');
child.stdin.write(' }');
child.stdin.write(' else ');
child.stdin.write(' {');
child.stdin.write(' split(proxy,dummy, "://");');
child.stdin.write(' printf "%s://%s:%s@%s", dummy[1], username, password, dummy[2];');
child.stdin.write(' }');
child.stdin.write(' }');
child.stdin.write("}'\nexit\n");
child.waitExit();
if (child.stdout.str.trim() != '')
{
console.info1(' => FOUND: ' + child.stdout.str.trim());
return (child.stdout.str.trim());
}
}
if(require('fs').existsSync('/etc/login.conf'))
{
console.info1('Checking login.conf settings');
var child = require('child_process').execFile('/bin/sh', ['sh']);
child.stdout.str = ''; child.stdout.on('data', function (c) { this.str += c.toString(); });
child.stdin.write("cat /etc/login.conf | tr '\\n' '`' | awk -F'`' '");
child.stdin.write('{');
child.stdin.write(' printf "{";');
child.stdin.write(' group=""; first=1; firstprop=0;')
child.stdin.write(' for(i=1;i<NF;++i) ');
child.stdin.write(' {');
child.stdin.write(' a=split($i,tok,":"); ');
child.stdin.write(' if(split(tok[1],dummy,"#")==1 && split(tok[1],dummy2," ")==1)');
child.stdin.write(' { ');
child.stdin.write(' if(group != "") { printf "}"; }');
child.stdin.write(' group = tok[1]; firstprop=1;');
child.stdin.write(' printf "%s\\"%s\\": {", (first==0?",":""), tok[1];');
child.stdin.write(' first=0;');
child.stdin.write(' }');
child.stdin.write(' else ');
child.stdin.write(' {');
child.stdin.write(' if(group != "" && split($i,dummy3,"\\\\")>1 && split($i, dummy4, "#")==1)');
child.stdin.write(' {');
child.stdin.write(' if(split($i,key1,"=")==1)');
child.stdin.write(' {');
child.stdin.write(' split($i,key2,":");');
child.stdin.write(' if(key2[2]!="\\\\")');
child.stdin.write(' {');
child.stdin.write(' printf "%s\\"%s\\": null",(firstprop==0?",":""),key2[2];');
child.stdin.write(' firstprop=0;')
child.stdin.write(' }');
child.stdin.write(' }');
child.stdin.write(' else');
child.stdin.write(' {');
child.stdin.write(' tmp = substr($i,2+length(key1[1]));');
child.stdin.write(' split(tmp,dummy,"\\\\");');
child.stdin.write(' tmp=substr(tmp,0,length(tmp)-2);');
child.stdin.write(' split(key1[1],keyname,":");');
child.stdin.write(' printf "%s\\"%s\\": \\"%s\\"", (firstprop==0?",":""), keyname[2], tmp;');
child.stdin.write(' firstprop=0;');
child.stdin.write(' }');
child.stdin.write(' }');
child.stdin.write(' }');
child.stdin.write(' }');
child.stdin.write(' if(group!="") { printf "}"; }')
child.stdin.write(' printf "}";');
child.stdin.write("}'");
child.stdin.write('\nexit\n');
child.waitExit();
if (child.stdout.str.trim() != '')
{
var config = null;
try
{
config = JSON.parse(child.stdout.str);
}
catch (e)
{
}
if(config)
{
// check root
if(config.root && config.root.setenv)
{
var i, tokens;
var items = config.root.setenv.split(',');
for(i=0;i<items.length;++i)
{
tokens = items[i].split('=');
if(tokens[0] == 'https_proxy' || tokens[0] == 'http_proxy')
{
console.info1(' => FOUND: ' + tokens[1].trim());
return (tokens[1].trim());
}
}
}
// check default
if (config.default && config.default.setenv)
{
var i, tokens;
var items = config.default.setenv.split(',');
for (i = 0; i < items.length; ++i)
{
tokens = items[i].split('=');
if (tokens[0] == 'https_proxy' || tokens[0] == 'http_proxy')
{
console.info1(' => FOUND: ' + tokens[1].trim());
return (tokens[1].trim());
}
}
}
}
}
}
// Check gsettings
if (require('fs').existsSync('/usr/bin/gsettings'))
{
// Start by seeing if we are running as user
var checkId = require('user-sessions').Self();
if (checkId == 0)
{
var checkLoggedInUser = true;
// Running as root, so check which user installed us
try
{
if ((require('MeshAgent').getStartupOptions().installedByUser) != null)
{
checkId = require('MeshAgent').getStartupOptions().installedByUser;
checkLoggedInUser = false;
}
}
catch (e)
{
}
if (checkLoggedInUser)
{
try
{
// Don't know who installed us, so see if anyone is logged in
checkId = require('user-sessions').consoleUid();
}
catch (e)
{
// Unable to determine which user to probe
checkId = 0;
}
}
}
console.info1('Checking gsettings with UID: ' + checkId);
var setting = require('linux-gnome-helpers').getProxySettings(checkId);
if (setting.mode == 'manual')
{
if (setting.authEnabled)
{
console.info1(' => FOUND: http://' + setting.username + ':' + setting.password + '@' + setting.host + ':' + setting.port);
return ('http://' + setting.username + ':' + setting.password + '@' + setting.host + ':' + setting.port);
}
else
{
console.info1(' => FOUND: http://' + setting.host + ':' + setting.port);
return ('http://' + setting.host + ':' + setting.port);
}
}
}
console.info1('NO PROXIES settings detected');
throw ('No proxies');
}
function posix_proxyCheck(uid, checkAddr)
{
var g;
var x = process.env['no_proxy'] ? process.env['no_proxy'].split(',') : [];
var t;
if (require('linux-gnome-helpers').available && (g = require('linux-gnome-helpers').getProxySettings(uid)).mode != 'none')
{
x = g.exceptions;
}
for(var i in x)
{
if (x[i] == checkAddr) { return (true); } // Direct Match
if (checkAddr.endsWith('.' + x[i])) { return (true); } // Subdomain Match
if ((v = x[i].split('/')).length == 2)
{
try
{
if(require('ip-address').Address4.fromString(v[0]).mask(parseInt(v[1])) == require('ip-address').Address4.fromString(checkAddr).mask(parseInt(v[1])))
{
return(true);
}
}
catch (ex)
{
}
}
}
return (false);
}
function windows_getUserRegistryKey()
{
var i;
if ((i = require('user-sessions').getProcessOwnerName(process.pid)).tsid == 0)
{
// We are a service, so we should check the user that installed the Mesh Agent
try
{
key = require('win-registry').QueryKey(require('win-registry').HKEY.LocalMachine, 'SYSTEM\\CurrentControlSet\\Services\\Mesh Agent', '_InstalledBy');
}
catch (xx)
{
// This info isn't available, so let's try to use the currently logged in user
try
{
key = require('win-registry').usernameToUserKey(require('user-sessions').getUsername(require('user-sessions').consoleUid()));
}
catch (xxx)
{
// No users are logged in, so as a last resort, let's try the last logged in user.
var entries = require('win-registry').QueryKey(require('win-registry').HKEY.Users);
for (i in entries.subkeys)
{
if (entries.subkeys[i].split('-').length > 5 && !entries.subkeys[i].endsWith('_Classes'))
{
key = entries.subkeys[i];
break;
}
}
}
}
}
else
{
// We are a logged in user
key = require('win-registry').usernameToUserKey(i.name);
}
if (!key) { throw ('Could not determine which user proxy setting to query'); }
return (key);
}
function windows_proxyCheck(key, checkAddr)
{
if (!key) { key = windows_getUserRegistryKey(); }
var proxyOverride = require('win-registry').QueryKey(require('win-registry').HKEY.Users, key + '\\Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings', 'ProxyOverride').split(';');
for(var i in proxyOverride)
{
proxyOverride[i] = proxyOverride[i].trim();
if ((checkAddr == '127.0.0.1' || checkAddr == '::1') && proxyOverride[i] == '<local>') { return (true); }
if (checkAddr == proxyOverride[i]) { return (true); } // Exact Match
if (proxyOverride[i].startsWith('*.') && checkAddr.endsWith(proxyOverride[i].substring(1))) { return (true); }
if (proxyOverride[i].endsWith('.*') && checkAddr.startsWith(proxyOverride[i].substring(0, proxyOverride[i].length - 1))) { return (true); }
}
return (false);
}
function macos_getProxy()
{
var child = require('child_process').execFile('/bin/sh', ['sh']);
child.stdout.str = ''; child.stdout.on('data', function (c) { this.str += c.toString(); });
child.stderr.str = ''; child.stderr.on('data', function (c) { this.str += c.toString(); });
child.stdin.write("scutil --proxy | tr '\\n' '`' | awk -F'`' '");
child.stdin.write('{');
child.stdin.write(' pstart=0;')
child.stdin.write(' for(i=1;i<NF;++i)');
child.stdin.write(" {");
child.stdin.write(' if(split($i,dummy,"ExceptionsList ")>1)');
child.stdin.write(" {");
child.stdin.write(' printf "{ \\"exceptions\\": [";');
child.stdin.write(' ++i;');
child.stdin.write(' fstart=1; pstart=1;');
child.stdin.write(' for(;i<NF;++i)');
child.stdin.write(' {');
child.stdin.write(' if(split($i,dummy,"}")>1) { break; } ');
child.stdin.write(' split($i, val, " : ");');
child.stdin.write(' printf "%s\\"%s\\"", (fstart==0?",":""), val[2];');
child.stdin.write(' fstart=0;');
child.stdin.write(' }');
child.stdin.write(' printf "]";');
child.stdin.write(' continue;');
child.stdin.write(" }");
child.stdin.write(' else');
child.stdin.write(' {');
child.stdin.write(' if(pstart==1 && split($i,dummy,"}")==1)');
child.stdin.write(' {');
child.stdin.write(' split($i,tok," : ");');
child.stdin.write(' split(tok[1],key," ");');
child.stdin.write(' printf ",\\"%s\\": \\"%s\\"", key[1], tok[2];');
child.stdin.write(' }');
child.stdin.write(' }')
child.stdin.write(" }");
child.stdin.write(' printf "}";');
child.stdin.write("}'\nexit\n");
child.waitExit();
if(child.stdout.str != '')
{
try
{
var p = JSON.parse(child.stdout.str);
if(p.HTTPEnable == "1")
{
return('http://' + p.HTTPProxy + ':' + p.HTTPPort);
}
}
catch(e)
{
console.log(e);
}
}
throw ('No Proxies');
}
function windows_getProxy()
{
var isroot = false;
var key, value;
key = windows_getUserRegistryKey();
try
{
if (require('win-registry').QueryKey(require('win-registry').HKEY.Users, key + '\\Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings', 'ProxyEnable') == 1)
{
// Proxy is enabled
return (require('win-registry').QueryKey(require('win-registry').HKEY.Users, key + '\\Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings', 'ProxyServer'));
}
}
catch(e)
{
throw ('No proxies');
}
}
switch (process.platform)
{
case 'linux':
case 'freebsd':
module.exports = { ignoreProxy: posix_proxyCheck, getProxy: linux_getProxy };
break;
case 'win32':
module.exports = { ignoreProxy: windows_proxyCheck, getProxy: windows_getProxy };
break;
case 'darwin':
module.exports = { getProxy: macos_getProxy };
break;
}
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