mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-09-10 11:54:40 +00:00
1026 lines
28 KiB
C++
1026 lines
28 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "ProxyAutoConfig.h"
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#include "nsICancelable.h"
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#include "nsIDNSListener.h"
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#include "nsIDNSRecord.h"
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#include "nsIDNSService.h"
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#include "nsThreadUtils.h"
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#include "nsIConsoleService.h"
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#include "nsJSUtils.h"
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#include "jsfriendapi.h"
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#include "prnetdb.h"
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#include "nsITimer.h"
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#include "mozilla/net/DNS.h"
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#include "nsServiceManagerUtils.h"
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#include "nsNetCID.h"
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namespace mozilla {
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namespace net {
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// These are some global helper symbols the PAC format requires that we provide that
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// are initialized as part of the global javascript context used for PAC evaluations.
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// Additionally dnsResolve(host) and myIpAddress() are supplied in the same context
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// but are implemented as c++ helpers. alert(msg) is similarly defined.
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static const char *sPacUtils =
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"function dnsDomainIs(host, domain) {\n"
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" return (host.length >= domain.length &&\n"
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" host.substring(host.length - domain.length) == domain);\n"
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"}\n"
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""
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"function dnsDomainLevels(host) {\n"
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" return host.split('.').length - 1;\n"
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"}\n"
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""
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"function convert_addr(ipchars) {\n"
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" var bytes = ipchars.split('.');\n"
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" var result = ((bytes[0] & 0xff) << 24) |\n"
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" ((bytes[1] & 0xff) << 16) |\n"
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" ((bytes[2] & 0xff) << 8) |\n"
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" (bytes[3] & 0xff);\n"
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" return result;\n"
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"}\n"
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""
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"function isInNet(ipaddr, pattern, maskstr) {\n"
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" var test = /^(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$/.exec(ipaddr);\n"
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" if (test == null) {\n"
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" ipaddr = dnsResolve(ipaddr);\n"
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" if (ipaddr == null)\n"
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" return false;\n"
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" } else if (test[1] > 255 || test[2] > 255 || \n"
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" test[3] > 255 || test[4] > 255) {\n"
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" return false; // not an IP address\n"
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" }\n"
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" var host = convert_addr(ipaddr);\n"
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" var pat = convert_addr(pattern);\n"
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" var mask = convert_addr(maskstr);\n"
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" return ((host & mask) == (pat & mask));\n"
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" \n"
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"}\n"
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""
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"function isPlainHostName(host) {\n"
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" return (host.search('\\\\.') == -1);\n"
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"}\n"
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""
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"function isResolvable(host) {\n"
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" var ip = dnsResolve(host);\n"
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" return (ip != null);\n"
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"}\n"
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""
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"function localHostOrDomainIs(host, hostdom) {\n"
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" return (host == hostdom) ||\n"
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" (hostdom.lastIndexOf(host + '.', 0) == 0);\n"
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"}\n"
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""
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"function shExpMatch(url, pattern) {\n"
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" pattern = pattern.replace(/\\./g, '\\\\.');\n"
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" pattern = pattern.replace(/\\*/g, '.*');\n"
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" pattern = pattern.replace(/\\?/g, '.');\n"
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" var newRe = new RegExp('^'+pattern+'$');\n"
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" return newRe.test(url);\n"
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"}\n"
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""
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"var wdays = {SUN: 0, MON: 1, TUE: 2, WED: 3, THU: 4, FRI: 5, SAT: 6};\n"
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"var months = {JAN: 0, FEB: 1, MAR: 2, APR: 3, MAY: 4, JUN: 5, JUL: 6, AUG: 7, SEP: 8, OCT: 9, NOV: 10, DEC: 11};\n"
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""
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"function weekdayRange() {\n"
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" function getDay(weekday) {\n"
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" if (weekday in wdays) {\n"
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" return wdays[weekday];\n"
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" }\n"
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" return -1;\n"
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" }\n"
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" var date = new Date();\n"
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" var argc = arguments.length;\n"
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" var wday;\n"
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" if (argc < 1)\n"
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" return false;\n"
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" if (arguments[argc - 1] == 'GMT') {\n"
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" argc--;\n"
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" wday = date.getUTCDay();\n"
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" } else {\n"
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" wday = date.getDay();\n"
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" }\n"
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" var wd1 = getDay(arguments[0]);\n"
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" var wd2 = (argc == 2) ? getDay(arguments[1]) : wd1;\n"
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" return (wd1 == -1 || wd2 == -1) ? false\n"
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" : (wd1 <= wday && wday <= wd2);\n"
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"}\n"
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""
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"function dateRange() {\n"
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" function getMonth(name) {\n"
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" if (name in months) {\n"
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" return months[name];\n"
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" }\n"
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" return -1;\n"
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" }\n"
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" var date = new Date();\n"
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" var argc = arguments.length;\n"
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" if (argc < 1) {\n"
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" return false;\n"
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" }\n"
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" var isGMT = (arguments[argc - 1] == 'GMT');\n"
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"\n"
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" if (isGMT) {\n"
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" argc--;\n"
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" }\n"
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" // function will work even without explict handling of this case\n"
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" if (argc == 1) {\n"
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" var tmp = parseInt(arguments[0]);\n"
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" if (isNaN(tmp)) {\n"
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" return ((isGMT ? date.getUTCMonth() : date.getMonth()) ==\n"
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" getMonth(arguments[0]));\n"
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" } else if (tmp < 32) {\n"
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" return ((isGMT ? date.getUTCDate() : date.getDate()) == tmp);\n"
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" } else { \n"
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" return ((isGMT ? date.getUTCFullYear() : date.getFullYear()) ==\n"
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" tmp);\n"
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" }\n"
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" }\n"
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" var year = date.getFullYear();\n"
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" var date1, date2;\n"
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" date1 = new Date(year, 0, 1, 0, 0, 0);\n"
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" date2 = new Date(year, 11, 31, 23, 59, 59);\n"
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" var adjustMonth = false;\n"
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" for (var i = 0; i < (argc >> 1); i++) {\n"
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" var tmp = parseInt(arguments[i]);\n"
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" if (isNaN(tmp)) {\n"
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" var mon = getMonth(arguments[i]);\n"
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" date1.setMonth(mon);\n"
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" } else if (tmp < 32) {\n"
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" adjustMonth = (argc <= 2);\n"
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" date1.setDate(tmp);\n"
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" } else {\n"
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" date1.setFullYear(tmp);\n"
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" }\n"
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" }\n"
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" for (var i = (argc >> 1); i < argc; i++) {\n"
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" var tmp = parseInt(arguments[i]);\n"
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" if (isNaN(tmp)) {\n"
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" var mon = getMonth(arguments[i]);\n"
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" date2.setMonth(mon);\n"
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" } else if (tmp < 32) {\n"
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" date2.setDate(tmp);\n"
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" } else {\n"
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" date2.setFullYear(tmp);\n"
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" }\n"
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" }\n"
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" if (adjustMonth) {\n"
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" date1.setMonth(date.getMonth());\n"
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" date2.setMonth(date.getMonth());\n"
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" }\n"
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" if (isGMT) {\n"
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" var tmp = date;\n"
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" tmp.setFullYear(date.getUTCFullYear());\n"
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" tmp.setMonth(date.getUTCMonth());\n"
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" tmp.setDate(date.getUTCDate());\n"
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" tmp.setHours(date.getUTCHours());\n"
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" tmp.setMinutes(date.getUTCMinutes());\n"
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" tmp.setSeconds(date.getUTCSeconds());\n"
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" date = tmp;\n"
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" }\n"
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" return ((date1 <= date) && (date <= date2));\n"
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"}\n"
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""
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"function timeRange() {\n"
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" var argc = arguments.length;\n"
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" var date = new Date();\n"
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" var isGMT= false;\n"
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""
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" if (argc < 1) {\n"
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" return false;\n"
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" }\n"
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" if (arguments[argc - 1] == 'GMT') {\n"
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" isGMT = true;\n"
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" argc--;\n"
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" }\n"
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"\n"
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" var hour = isGMT ? date.getUTCHours() : date.getHours();\n"
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" var date1, date2;\n"
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" date1 = new Date();\n"
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" date2 = new Date();\n"
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"\n"
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" if (argc == 1) {\n"
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" return (hour == arguments[0]);\n"
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" } else if (argc == 2) {\n"
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" return ((arguments[0] <= hour) && (hour <= arguments[1]));\n"
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" } else {\n"
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" switch (argc) {\n"
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" case 6:\n"
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" date1.setSeconds(arguments[2]);\n"
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" date2.setSeconds(arguments[5]);\n"
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" case 4:\n"
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" var middle = argc >> 1;\n"
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" date1.setHours(arguments[0]);\n"
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" date1.setMinutes(arguments[1]);\n"
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" date2.setHours(arguments[middle]);\n"
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" date2.setMinutes(arguments[middle + 1]);\n"
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" if (middle == 2) {\n"
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" date2.setSeconds(59);\n"
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" }\n"
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" break;\n"
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" default:\n"
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" throw 'timeRange: bad number of arguments'\n"
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" }\n"
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" }\n"
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"\n"
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" if (isGMT) {\n"
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" date.setFullYear(date.getUTCFullYear());\n"
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" date.setMonth(date.getUTCMonth());\n"
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" date.setDate(date.getUTCDate());\n"
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" date.setHours(date.getUTCHours());\n"
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" date.setMinutes(date.getUTCMinutes());\n"
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" date.setSeconds(date.getUTCSeconds());\n"
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" }\n"
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" return ((date1 <= date) && (date <= date2));\n"
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"}\n"
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"";
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// sRunning is defined for the helper functions only while the
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// Javascript engine is running and the PAC object cannot be deleted
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// or reset.
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static uint32_t sRunningIndex = 0xdeadbeef;
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static ProxyAutoConfig *GetRunning()
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{
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MOZ_ASSERT(sRunningIndex != 0xdeadbeef);
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return static_cast<ProxyAutoConfig *>(PR_GetThreadPrivate(sRunningIndex));
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}
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static void SetRunning(ProxyAutoConfig *arg)
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{
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MOZ_ASSERT(sRunningIndex != 0xdeadbeef);
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PR_SetThreadPrivate(sRunningIndex, arg);
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}
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// The PACResolver is used for dnsResolve()
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class PACResolver final : public nsIDNSListener
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, public nsITimerCallback
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{
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public:
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NS_DECL_THREADSAFE_ISUPPORTS
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PACResolver()
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: mStatus(NS_ERROR_FAILURE)
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{
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}
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// nsIDNSListener
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NS_IMETHODIMP OnLookupComplete(nsICancelable *request,
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nsIDNSRecord *record,
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nsresult status) override
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{
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if (mTimer) {
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mTimer->Cancel();
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mTimer = nullptr;
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}
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mRequest = nullptr;
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mStatus = status;
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mResponse = record;
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return NS_OK;
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}
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// nsITimerCallback
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NS_IMETHODIMP Notify(nsITimer *timer) override
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{
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if (mRequest)
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mRequest->Cancel(NS_ERROR_NET_TIMEOUT);
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mTimer = nullptr;
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return NS_OK;
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}
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nsresult mStatus;
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nsCOMPtr<nsICancelable> mRequest;
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nsCOMPtr<nsIDNSRecord> mResponse;
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nsCOMPtr<nsITimer> mTimer;
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private:
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~PACResolver() {}
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};
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NS_IMPL_ISUPPORTS(PACResolver, nsIDNSListener, nsITimerCallback)
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static
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void PACLogToConsole(nsString &aMessage)
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{
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nsCOMPtr<nsIConsoleService> consoleService =
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do_GetService(NS_CONSOLESERVICE_CONTRACTID);
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if (!consoleService)
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return;
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consoleService->LogStringMessage(aMessage.get());
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}
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// Javascript errors are logged to the main error console
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static void
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PACErrorReporter(JSContext *cx, const char *message, JSErrorReport *report)
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{
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nsString formattedMessage(NS_LITERAL_STRING("PAC Execution Error: "));
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formattedMessage += report->ucmessage;
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formattedMessage += NS_LITERAL_STRING(" [");
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formattedMessage.Append(report->linebuf(), report->linebufLength());
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formattedMessage += NS_LITERAL_STRING("]");
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PACLogToConsole(formattedMessage);
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}
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// timeout of 0 means the normal necko timeout strategy, otherwise the dns request
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// will be canceled after aTimeout milliseconds
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static
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bool PACResolve(const nsCString &aHostName, NetAddr *aNetAddr,
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unsigned int aTimeout)
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{
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if (!GetRunning()) {
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NS_WARNING("PACResolve without a running ProxyAutoConfig object");
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return false;
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}
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return GetRunning()->ResolveAddress(aHostName, aNetAddr, aTimeout);
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}
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ProxyAutoConfig::ProxyAutoConfig()
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: mJSRuntime(nullptr)
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, mJSNeedsSetup(false)
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, mShutdown(false)
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{
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MOZ_COUNT_CTOR(ProxyAutoConfig);
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}
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bool
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ProxyAutoConfig::ResolveAddress(const nsCString &aHostName,
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NetAddr *aNetAddr,
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unsigned int aTimeout)
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{
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nsCOMPtr<nsIDNSService> dns = do_GetService(NS_DNSSERVICE_CONTRACTID);
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if (!dns)
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return false;
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RefPtr<PACResolver> helper = new PACResolver();
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if (NS_FAILED(dns->AsyncResolve(aHostName,
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nsIDNSService::RESOLVE_PRIORITY_MEDIUM,
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helper,
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NS_GetCurrentThread(),
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getter_AddRefs(helper->mRequest))))
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return false;
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if (aTimeout && helper->mRequest) {
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if (!mTimer)
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mTimer = do_CreateInstance(NS_TIMER_CONTRACTID);
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if (mTimer) {
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mTimer->InitWithCallback(helper, aTimeout, nsITimer::TYPE_ONE_SHOT);
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helper->mTimer = mTimer;
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}
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}
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// Spin the event loop of the pac thread until lookup is complete.
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// nsPACman is responsible for keeping a queue and only allowing
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// one PAC execution at a time even when it is called re-entrantly.
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while (helper->mRequest)
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NS_ProcessNextEvent(NS_GetCurrentThread());
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if (NS_FAILED(helper->mStatus) ||
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NS_FAILED(helper->mResponse->GetNextAddr(0, aNetAddr)))
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return false;
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return true;
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}
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static
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bool PACResolveToString(const nsCString &aHostName,
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nsCString &aDottedDecimal,
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unsigned int aTimeout)
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{
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NetAddr netAddr;
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if (!PACResolve(aHostName, &netAddr, aTimeout))
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return false;
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char dottedDecimal[128];
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if (!NetAddrToString(&netAddr, dottedDecimal, sizeof(dottedDecimal)))
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return false;
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aDottedDecimal.Assign(dottedDecimal);
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return true;
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}
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// dnsResolve(host) javascript implementation
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static
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bool PACDnsResolve(JSContext *cx, unsigned int argc, JS::Value *vp)
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{
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JS::CallArgs args = CallArgsFromVp(argc, vp);
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if (NS_IsMainThread()) {
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NS_WARNING("DNS Resolution From PAC on Main Thread. How did that happen?");
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return false;
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}
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if (!args.requireAtLeast(cx, "dnsResolve", 1))
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return false;
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JS::Rooted<JSString*> arg1(cx, JS::ToString(cx, args[0]));
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if (!arg1)
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return false;
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nsAutoJSString hostName;
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nsAutoCString dottedDecimal;
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if (!hostName.init(cx, arg1))
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return false;
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if (PACResolveToString(NS_ConvertUTF16toUTF8(hostName), dottedDecimal, 0)) {
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JSString *dottedDecimalString = JS_NewStringCopyZ(cx, dottedDecimal.get());
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if (!dottedDecimalString) {
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return false;
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}
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args.rval().setString(dottedDecimalString);
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}
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else {
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args.rval().setNull();
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}
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return true;
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}
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// myIpAddress() javascript implementation
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static
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bool PACMyIpAddress(JSContext *cx, unsigned int argc, JS::Value *vp)
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{
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JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
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if (NS_IsMainThread()) {
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NS_WARNING("DNS Resolution From PAC on Main Thread. How did that happen?");
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return false;
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}
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if (!GetRunning()) {
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NS_WARNING("PAC myIPAddress without a running ProxyAutoConfig object");
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return false;
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}
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return GetRunning()->MyIPAddress(args);
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}
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// myAppId() javascript implementation
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static
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bool PACMyAppId(JSContext *cx, unsigned int argc, JS::Value *vp)
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{
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JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
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if (NS_IsMainThread()) {
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NS_WARNING("PACMyAppId on Main Thread. How did that happen?");
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return false;
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}
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if (!GetRunning()) {
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NS_WARNING("PACMyAppId without a running ProxyAutoConfig object");
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return false;
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}
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return GetRunning()->MyAppId(args);
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}
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// myAppOrigin() javascript implementation
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static
|
|
bool PACMyAppOrigin(JSContext *cx, unsigned int argc, JS::Value *vp)
|
|
{
|
|
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
|
|
|
|
if (NS_IsMainThread()) {
|
|
NS_WARNING("PACMyAppOrigin on Main Thread. How did that happen?");
|
|
return false;
|
|
}
|
|
|
|
if (!GetRunning()) {
|
|
NS_WARNING("PACMyAppOrigin without a running ProxyAutoConfig object");
|
|
return false;
|
|
}
|
|
|
|
return GetRunning()->MyAppOrigin(args);
|
|
}
|
|
|
|
// IsInBrowser() javascript implementation
|
|
static
|
|
bool PACIsInBrowser(JSContext *cx, unsigned int argc, JS::Value *vp)
|
|
{
|
|
JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
|
|
|
|
if (NS_IsMainThread()) {
|
|
NS_WARNING("PACIsInBrowser on Main Thread. How did that happen?");
|
|
return false;
|
|
}
|
|
|
|
if (!GetRunning()) {
|
|
NS_WARNING("PACIsInBrowser without a running ProxyAutoConfig object");
|
|
return false;
|
|
}
|
|
|
|
return GetRunning()->IsInBrowser(args);
|
|
}
|
|
|
|
// proxyAlert(msg) javascript implementation
|
|
static
|
|
bool PACProxyAlert(JSContext *cx, unsigned int argc, JS::Value *vp)
|
|
{
|
|
JS::CallArgs args = CallArgsFromVp(argc, vp);
|
|
|
|
if (!args.requireAtLeast(cx, "alert", 1))
|
|
return false;
|
|
|
|
JS::Rooted<JSString*> arg1(cx, JS::ToString(cx, args[0]));
|
|
if (!arg1)
|
|
return false;
|
|
|
|
nsAutoJSString message;
|
|
if (!message.init(cx, arg1))
|
|
return false;
|
|
|
|
nsAutoString alertMessage;
|
|
alertMessage.SetCapacity(32 + message.Length());
|
|
alertMessage += NS_LITERAL_STRING("PAC-alert: ");
|
|
alertMessage += message;
|
|
PACLogToConsole(alertMessage);
|
|
|
|
args.rval().setUndefined(); /* return undefined */
|
|
return true;
|
|
}
|
|
|
|
static const JSFunctionSpec PACGlobalFunctions[] = {
|
|
JS_FS("dnsResolve", PACDnsResolve, 1, 0),
|
|
|
|
// a global "var pacUseMultihomedDNS = true;" will change behavior
|
|
// of myIpAddress to actively use DNS
|
|
JS_FS("myIpAddress", PACMyIpAddress, 0, 0),
|
|
JS_FS("myAppId", PACMyAppId, 0, 0),
|
|
JS_FS("myAppOrigin", PACMyAppOrigin, 0, 0),
|
|
JS_FS("isInBrowser", PACIsInBrowser, 0, 0),
|
|
JS_FS("alert", PACProxyAlert, 1, 0),
|
|
JS_FS_END
|
|
};
|
|
|
|
// JSRuntimeWrapper is a c++ object that manages the runtime and context
|
|
// for the JS engine used on the PAC thread. It is initialized and destroyed
|
|
// on the PAC thread.
|
|
class JSRuntimeWrapper
|
|
{
|
|
public:
|
|
static JSRuntimeWrapper *Create()
|
|
{
|
|
JSRuntime *runtime = JS_NewRuntime(sRuntimeHeapSize);
|
|
if (NS_WARN_IF(!runtime))
|
|
return nullptr;
|
|
|
|
JSRuntimeWrapper *entry = new JSRuntimeWrapper(runtime);
|
|
if (NS_FAILED(entry->Init())) {
|
|
delete entry;
|
|
return nullptr;
|
|
}
|
|
|
|
return entry;
|
|
}
|
|
|
|
JSContext *Context() const
|
|
{
|
|
return mContext;
|
|
}
|
|
|
|
JSObject *Global() const
|
|
{
|
|
return mGlobal;
|
|
}
|
|
|
|
~JSRuntimeWrapper()
|
|
{
|
|
mGlobal = nullptr;
|
|
|
|
MOZ_COUNT_DTOR(JSRuntimeWrapper);
|
|
if (mContext) {
|
|
JS_DestroyContext(mContext);
|
|
}
|
|
|
|
if (mRuntime) {
|
|
JS_DestroyRuntime(mRuntime);
|
|
}
|
|
}
|
|
|
|
void SetOK()
|
|
{
|
|
mOK = true;
|
|
}
|
|
|
|
bool IsOK()
|
|
{
|
|
return mOK;
|
|
}
|
|
|
|
private:
|
|
static const unsigned sRuntimeHeapSize = 2 << 20;
|
|
|
|
JSRuntime *mRuntime;
|
|
JSContext *mContext;
|
|
JS::PersistentRooted<JSObject*> mGlobal;
|
|
bool mOK;
|
|
|
|
static const JSClass sGlobalClass;
|
|
|
|
explicit JSRuntimeWrapper(JSRuntime* rt)
|
|
: mRuntime(rt), mContext(nullptr), mGlobal(rt, nullptr), mOK(false)
|
|
{
|
|
MOZ_COUNT_CTOR(JSRuntimeWrapper);
|
|
}
|
|
|
|
nsresult Init()
|
|
{
|
|
/*
|
|
* Not setting this will cause JS_CHECK_RECURSION to report false
|
|
* positives
|
|
*/
|
|
JS_SetNativeStackQuota(mRuntime, 128 * sizeof(size_t) * 1024);
|
|
|
|
JS_SetErrorReporter(mRuntime, PACErrorReporter);
|
|
|
|
mContext = JS_NewContext(mRuntime, 0);
|
|
NS_ENSURE_TRUE(mContext, NS_ERROR_OUT_OF_MEMORY);
|
|
|
|
JSAutoRequest ar(mContext);
|
|
|
|
JS::CompartmentOptions options;
|
|
options.setZone(JS::SystemZone)
|
|
.setVersion(JSVERSION_LATEST);
|
|
mGlobal = JS_NewGlobalObject(mContext, &sGlobalClass, nullptr,
|
|
JS::DontFireOnNewGlobalHook, options);
|
|
NS_ENSURE_TRUE(mGlobal, NS_ERROR_OUT_OF_MEMORY);
|
|
JS::Rooted<JSObject*> global(mContext, mGlobal);
|
|
|
|
JSAutoCompartment ac(mContext, global);
|
|
JS_InitStandardClasses(mContext, global);
|
|
|
|
if (!JS_DefineFunctions(mContext, global, PACGlobalFunctions))
|
|
return NS_ERROR_FAILURE;
|
|
|
|
JS_FireOnNewGlobalObject(mContext, global);
|
|
|
|
return NS_OK;
|
|
}
|
|
};
|
|
|
|
const JSClass JSRuntimeWrapper::sGlobalClass = {
|
|
"PACResolutionThreadGlobal",
|
|
JSCLASS_GLOBAL_FLAGS,
|
|
nullptr, nullptr, nullptr, nullptr,
|
|
nullptr, nullptr, nullptr, nullptr,
|
|
nullptr, nullptr, nullptr,
|
|
JS_GlobalObjectTraceHook
|
|
};
|
|
|
|
void
|
|
ProxyAutoConfig::SetThreadLocalIndex(uint32_t index)
|
|
{
|
|
sRunningIndex = index;
|
|
}
|
|
|
|
nsresult
|
|
ProxyAutoConfig::Init(const nsCString &aPACURI,
|
|
const nsCString &aPACScript)
|
|
{
|
|
mPACURI = aPACURI;
|
|
mPACScript = sPacUtils;
|
|
mPACScript.Append(aPACScript);
|
|
|
|
if (!GetRunning())
|
|
return SetupJS();
|
|
|
|
mJSNeedsSetup = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
ProxyAutoConfig::SetupJS()
|
|
{
|
|
mJSNeedsSetup = false;
|
|
MOZ_ASSERT(!GetRunning(), "JIT is running");
|
|
|
|
delete mJSRuntime;
|
|
mJSRuntime = nullptr;
|
|
|
|
if (mPACScript.IsEmpty())
|
|
return NS_ERROR_FAILURE;
|
|
|
|
mJSRuntime = JSRuntimeWrapper::Create();
|
|
if (!mJSRuntime)
|
|
return NS_ERROR_FAILURE;
|
|
|
|
JSContext* cx = mJSRuntime->Context();
|
|
JSAutoRequest ar(cx);
|
|
JSAutoCompartment ac(cx, mJSRuntime->Global());
|
|
|
|
// check if this is a data: uri so that we don't spam the js console with
|
|
// huge meaningless strings. this is not on the main thread, so it can't
|
|
// use nsIRUI scheme methods
|
|
bool isDataURI = nsDependentCSubstring(mPACURI, 0, 5).LowerCaseEqualsASCII("data:", 5);
|
|
|
|
SetRunning(this);
|
|
JS::Rooted<JSObject*> global(cx, mJSRuntime->Global());
|
|
JS::CompileOptions options(cx);
|
|
options.setFileAndLine(mPACURI.get(), 1);
|
|
JS::Rooted<JSScript*> script(cx);
|
|
if (!JS_CompileScript(cx, mPACScript.get(), mPACScript.Length(), options,
|
|
&script) ||
|
|
!JS_ExecuteScript(cx, script))
|
|
{
|
|
nsString alertMessage(NS_LITERAL_STRING("PAC file failed to install from "));
|
|
if (isDataURI) {
|
|
alertMessage += NS_LITERAL_STRING("data: URI");
|
|
}
|
|
else {
|
|
alertMessage += NS_ConvertUTF8toUTF16(mPACURI);
|
|
}
|
|
PACLogToConsole(alertMessage);
|
|
SetRunning(nullptr);
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
SetRunning(nullptr);
|
|
|
|
mJSRuntime->SetOK();
|
|
nsString alertMessage(NS_LITERAL_STRING("PAC file installed from "));
|
|
if (isDataURI) {
|
|
alertMessage += NS_LITERAL_STRING("data: URI");
|
|
}
|
|
else {
|
|
alertMessage += NS_ConvertUTF8toUTF16(mPACURI);
|
|
}
|
|
PACLogToConsole(alertMessage);
|
|
|
|
// we don't need these now
|
|
mPACScript.Truncate();
|
|
mPACURI.Truncate();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
ProxyAutoConfig::GetProxyForURI(const nsCString &aTestURI,
|
|
const nsCString &aTestHost,
|
|
uint32_t aAppId,
|
|
const nsString &aAppOrigin,
|
|
bool aIsInBrowser,
|
|
nsACString &result)
|
|
{
|
|
if (mJSNeedsSetup)
|
|
SetupJS();
|
|
|
|
if (!mJSRuntime || !mJSRuntime->IsOK())
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
|
|
JSContext *cx = mJSRuntime->Context();
|
|
JSAutoRequest ar(cx);
|
|
JSAutoCompartment ac(cx, mJSRuntime->Global());
|
|
|
|
// the sRunning flag keeps a new PAC file from being installed
|
|
// while the event loop is spinning on a DNS function. Don't early return.
|
|
SetRunning(this);
|
|
mRunningHost = aTestHost;
|
|
mRunningAppId = aAppId;
|
|
mRunningAppOrigin = aAppOrigin;
|
|
mRunningIsInBrowser = aIsInBrowser;
|
|
|
|
nsresult rv = NS_ERROR_FAILURE;
|
|
JS::RootedString uriString(cx, JS_NewStringCopyZ(cx, aTestURI.get()));
|
|
JS::RootedString hostString(cx, JS_NewStringCopyZ(cx, aTestHost.get()));
|
|
|
|
if (uriString && hostString) {
|
|
JS::AutoValueArray<2> args(cx);
|
|
args[0].setString(uriString);
|
|
args[1].setString(hostString);
|
|
|
|
JS::Rooted<JS::Value> rval(cx);
|
|
JS::Rooted<JSObject*> global(cx, mJSRuntime->Global());
|
|
bool ok = JS_CallFunctionName(cx, global, "FindProxyForURL", args, &rval);
|
|
|
|
if (ok && rval.isString()) {
|
|
nsAutoJSString pacString;
|
|
if (pacString.init(cx, rval.toString())) {
|
|
CopyUTF16toUTF8(pacString, result);
|
|
rv = NS_OK;
|
|
}
|
|
}
|
|
}
|
|
|
|
mRunningHost.Truncate();
|
|
SetRunning(nullptr);
|
|
return rv;
|
|
}
|
|
|
|
void
|
|
ProxyAutoConfig::GC()
|
|
{
|
|
if (!mJSRuntime || !mJSRuntime->IsOK())
|
|
return;
|
|
|
|
JSAutoCompartment ac(mJSRuntime->Context(), mJSRuntime->Global());
|
|
JS_MaybeGC(mJSRuntime->Context());
|
|
}
|
|
|
|
ProxyAutoConfig::~ProxyAutoConfig()
|
|
{
|
|
MOZ_COUNT_DTOR(ProxyAutoConfig);
|
|
NS_ASSERTION(!mJSRuntime,
|
|
"~ProxyAutoConfig leaking JS runtime that "
|
|
"should have been deleted on pac thread");
|
|
}
|
|
|
|
void
|
|
ProxyAutoConfig::Shutdown()
|
|
{
|
|
MOZ_ASSERT(!NS_IsMainThread(), "wrong thread for shutdown");
|
|
|
|
if (GetRunning() || mShutdown)
|
|
return;
|
|
|
|
mShutdown = true;
|
|
delete mJSRuntime;
|
|
mJSRuntime = nullptr;
|
|
}
|
|
|
|
bool
|
|
ProxyAutoConfig::SrcAddress(const NetAddr *remoteAddress, nsCString &localAddress)
|
|
{
|
|
PRFileDesc *fd;
|
|
fd = PR_OpenUDPSocket(remoteAddress->raw.family);
|
|
if (!fd)
|
|
return false;
|
|
|
|
PRNetAddr prRemoteAddress;
|
|
NetAddrToPRNetAddr(remoteAddress, &prRemoteAddress);
|
|
if (PR_Connect(fd, &prRemoteAddress, 0) != PR_SUCCESS) {
|
|
PR_Close(fd);
|
|
return false;
|
|
}
|
|
|
|
PRNetAddr localName;
|
|
if (PR_GetSockName(fd, &localName) != PR_SUCCESS) {
|
|
PR_Close(fd);
|
|
return false;
|
|
}
|
|
|
|
PR_Close(fd);
|
|
|
|
char dottedDecimal[128];
|
|
if (PR_NetAddrToString(&localName, dottedDecimal, sizeof(dottedDecimal)) != PR_SUCCESS)
|
|
return false;
|
|
|
|
localAddress.Assign(dottedDecimal);
|
|
|
|
return true;
|
|
}
|
|
|
|
// hostName is run through a dns lookup and then a udp socket is connected
|
|
// to the result. If that all works, the local IP address of the socket is
|
|
// returned to the javascript caller and |*aResult| is set to true. Otherwise
|
|
// |*aResult| is set to false.
|
|
bool
|
|
ProxyAutoConfig::MyIPAddressTryHost(const nsCString &hostName,
|
|
unsigned int timeout,
|
|
const JS::CallArgs &aArgs,
|
|
bool* aResult)
|
|
{
|
|
*aResult = false;
|
|
|
|
NetAddr remoteAddress;
|
|
nsAutoCString localDottedDecimal;
|
|
JSContext *cx = mJSRuntime->Context();
|
|
|
|
if (PACResolve(hostName, &remoteAddress, timeout) &&
|
|
SrcAddress(&remoteAddress, localDottedDecimal)) {
|
|
JSString *dottedDecimalString =
|
|
JS_NewStringCopyZ(cx, localDottedDecimal.get());
|
|
if (!dottedDecimalString) {
|
|
return false;
|
|
}
|
|
|
|
*aResult = true;
|
|
aArgs.rval().setString(dottedDecimalString);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
ProxyAutoConfig::MyIPAddress(const JS::CallArgs &aArgs)
|
|
{
|
|
nsAutoCString remoteDottedDecimal;
|
|
nsAutoCString localDottedDecimal;
|
|
JSContext *cx = mJSRuntime->Context();
|
|
JS::RootedValue v(cx);
|
|
JS::Rooted<JSObject*> global(cx, mJSRuntime->Global());
|
|
|
|
bool useMultihomedDNS =
|
|
JS_GetProperty(cx, global, "pacUseMultihomedDNS", &v) &&
|
|
!v.isUndefined() && ToBoolean(v);
|
|
|
|
// first, lookup the local address of a socket connected
|
|
// to the host of uri being resolved by the pac file. This is
|
|
// v6 safe.. but is the last step like that
|
|
bool rvalAssigned = false;
|
|
if (useMultihomedDNS) {
|
|
if (!MyIPAddressTryHost(mRunningHost, kTimeout, aArgs, &rvalAssigned) ||
|
|
rvalAssigned) {
|
|
return rvalAssigned;
|
|
}
|
|
} else {
|
|
// we can still do the fancy multi homing thing if the host is a literal
|
|
PRNetAddr tempAddr;
|
|
memset(&tempAddr, 0, sizeof(PRNetAddr));
|
|
if ((PR_StringToNetAddr(mRunningHost.get(), &tempAddr) == PR_SUCCESS) &&
|
|
(!MyIPAddressTryHost(mRunningHost, kTimeout, aArgs, &rvalAssigned) ||
|
|
rvalAssigned)) {
|
|
return rvalAssigned;
|
|
}
|
|
}
|
|
|
|
// next, look for a route to a public internet address that doesn't need DNS.
|
|
// This is the google anycast dns address, but it doesn't matter if it
|
|
// remains operable (as we don't contact it) as long as the address stays
|
|
// in commonly routed IP address space.
|
|
remoteDottedDecimal.AssignLiteral("8.8.8.8");
|
|
if (!MyIPAddressTryHost(remoteDottedDecimal, 0, aArgs, &rvalAssigned) ||
|
|
rvalAssigned) {
|
|
return rvalAssigned;
|
|
}
|
|
|
|
// finally, use the old algorithm based on the local hostname
|
|
nsAutoCString hostName;
|
|
nsCOMPtr<nsIDNSService> dns = do_GetService(NS_DNSSERVICE_CONTRACTID);
|
|
// without multihomedDNS use such a short timeout that we are basically
|
|
// just looking at the cache for raw dotted decimals
|
|
uint32_t timeout = useMultihomedDNS ? kTimeout : 1;
|
|
if (dns && NS_SUCCEEDED(dns->GetMyHostName(hostName)) &&
|
|
PACResolveToString(hostName, localDottedDecimal, timeout)) {
|
|
JSString *dottedDecimalString =
|
|
JS_NewStringCopyZ(cx, localDottedDecimal.get());
|
|
if (!dottedDecimalString) {
|
|
return false;
|
|
}
|
|
|
|
aArgs.rval().setString(dottedDecimalString);
|
|
return true;
|
|
}
|
|
|
|
// next try a couple RFC 1918 variants.. maybe there is a
|
|
// local route
|
|
remoteDottedDecimal.AssignLiteral("192.168.0.1");
|
|
if (!MyIPAddressTryHost(remoteDottedDecimal, 0, aArgs, &rvalAssigned) ||
|
|
rvalAssigned) {
|
|
return rvalAssigned;
|
|
}
|
|
|
|
// more RFC 1918
|
|
remoteDottedDecimal.AssignLiteral("10.0.0.1");
|
|
if (!MyIPAddressTryHost(remoteDottedDecimal, 0, aArgs, &rvalAssigned) ||
|
|
rvalAssigned) {
|
|
return rvalAssigned;
|
|
}
|
|
|
|
// who knows? let's fallback to localhost
|
|
localDottedDecimal.AssignLiteral("127.0.0.1");
|
|
JSString *dottedDecimalString =
|
|
JS_NewStringCopyZ(cx, localDottedDecimal.get());
|
|
if (!dottedDecimalString) {
|
|
return false;
|
|
}
|
|
|
|
aArgs.rval().setString(dottedDecimalString);
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
ProxyAutoConfig::MyAppId(const JS::CallArgs &aArgs)
|
|
{
|
|
aArgs.rval().setNumber(mRunningAppId);
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
ProxyAutoConfig::MyAppOrigin(const JS::CallArgs &aArgs)
|
|
{
|
|
JSContext *cx = mJSRuntime->Context();
|
|
JSString *origin =
|
|
JS_NewStringCopyZ(cx, NS_ConvertUTF16toUTF8(mRunningAppOrigin).get());
|
|
if (!origin) {
|
|
return false;
|
|
}
|
|
|
|
aArgs.rval().setString(origin);
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
ProxyAutoConfig::IsInBrowser(const JS::CallArgs &aArgs)
|
|
{
|
|
aArgs.rval().setBoolean(mRunningIsInBrowser);
|
|
return true;
|
|
}
|
|
|
|
} // namespace net
|
|
} // namespace mozilla
|