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3415 lines
103 KiB
C
3415 lines
103 KiB
C
/* Copyright 2001 Matej Pfajfar.
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* Copyright 2001-2004 Roger Dingledine.
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* Copyright 2004-2005 Roger Dingledine, Nick Mathewson. */
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/* See LICENSE for licensing information */
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/* $Id$ */
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const char config_c_id[] = "$Id$";
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/**
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* \file config.c
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* \brief Code to parse and interpret configuration files.
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**/
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#include "or.h"
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#ifdef MS_WINDOWS
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#include <shlobj.h>
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#endif
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#include "../common/aes.h"
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/** Enumeration of types which option values can take */
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typedef enum config_type_t {
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CONFIG_TYPE_STRING = 0, /**< An arbitrary string. */
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CONFIG_TYPE_UINT, /**< A non-negative integer less than MAX_INT */
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CONFIG_TYPE_INTERVAL, /**< A number of seconds, with optional units*/
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CONFIG_TYPE_MEMUNIT, /**< A number of bytes, with optional units*/
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CONFIG_TYPE_DOUBLE, /**< A floating-point value */
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CONFIG_TYPE_BOOL, /**< A boolean value, expressed as 0 or 1. */
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CONFIG_TYPE_ISOTIME, /**< An ISO-formated time relative to GMT. */
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CONFIG_TYPE_CSV, /**< A list of strings, separated by commas and optional
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* whitespace. */
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CONFIG_TYPE_LINELIST, /**< Uninterpreted config lines */
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CONFIG_TYPE_LINELIST_S, /**< Uninterpreted, context-sensitive config lines,
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* mixed with other keywords. */
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CONFIG_TYPE_LINELIST_V, /**< Catch-all "virtual" option to summarize
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* context-sensitive config lines when fetching.
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*/
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CONFIG_TYPE_OBSOLETE, /**< Obsolete (ignored) option. */
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} config_type_t;
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/* An abbreviation for a configuration option allowed on the command line */
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typedef struct config_abbrev_t {
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const char *abbreviated;
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const char *full;
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int commandline_only;
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} config_abbrev_t;
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/* Handy macro for declaring "In the config file or on the command line,
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* you can abbreviate <b>tok</b>s as <b>tok</b>". */
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#define PLURAL(tok) { #tok, #tok "s", 0 }
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/* A list of command-line abbreviations. */
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static config_abbrev_t _option_abbrevs[] = {
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PLURAL(ExitNode),
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PLURAL(EntryNode),
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PLURAL(ExcludeNode),
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PLURAL(FirewallPort),
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PLURAL(LongLivedPort),
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PLURAL(HiddenServiceNode),
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PLURAL(HiddenServiceExcludeNode),
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PLURAL(NumCpu),
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PLURAL(RendNode),
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PLURAL(RendExcludeNode),
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PLURAL(StrictEntryNode),
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PLURAL(StrictExitNode),
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{ "l", "Log", 1},
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{ "BandwidthRateBytes", "BandwidthRate", 0},
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{ "BandwidthBurstBytes", "BandwidthBurst", 0},
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{ "DirFetchPostPeriod", "StatusFetchPeriod", 0},
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{ "MaxConn", "ConnLimit", 0},
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{ NULL, NULL , 0},
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};
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#undef PLURAL
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/** A variable allowed in the configuration file or on the command line. */
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typedef struct config_var_t {
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const char *name; /**< The full keyword (case insensitive). */
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config_type_t type; /**< How to interpret the type and turn it into a value. */
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off_t var_offset; /**< Offset of the corresponding member of or_options_t. */
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const char *initvalue; /**< String (or null) describing initial value. */
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const char *description;
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} config_var_t;
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/** Return the offset of <b>member</b> within the type <b>tp</b>, in bytes */
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#define STRUCT_OFFSET(tp, member) ((off_t) (((char*)&((tp*)0)->member)-(char*)0))
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/** An entry for config_vars: "The option <b>name</b> has type
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* CONFIG_TYPE_<b>conftype</b>, and corresponds to
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* or_options_t.<b>member</b>"
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*/
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#define VAR(name,conftype,member,initvalue) \
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{ name, CONFIG_TYPE_ ## conftype, STRUCT_OFFSET(or_options_t, member), initvalue }
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/** An entry for config_vars: "The option <b>name</b> is obsolete." */
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#define OBSOLETE(name) { name, CONFIG_TYPE_OBSOLETE, 0, NULL }
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/** Array of configuration options. Until we disallow nonstandard
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* abbreviations, order is significant, since the first matching option will
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* be chosen first.
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*/
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static config_var_t _option_vars[] = {
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VAR("AccountingMax", MEMUNIT, AccountingMax, "0 bytes"),
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VAR("AccountingMaxKB", UINT, _AccountingMaxKB, "0"),
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VAR("AccountingStart", STRING, AccountingStart, NULL),
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VAR("Address", STRING, Address, NULL),
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VAR("AllowUnverifiedNodes",CSV, AllowUnverifiedNodes, "middle,rendezvous"),
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VAR("AssumeReachable", BOOL, AssumeReachable, "0"),
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VAR("AuthoritativeDirectory",BOOL, AuthoritativeDir, "0"),
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VAR("BandwidthBurst", MEMUNIT, BandwidthBurst, "5 MB"),
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VAR("BandwidthRate", MEMUNIT, BandwidthRate, "2 MB"),
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VAR("ClientOnly", BOOL, ClientOnly, "0"),
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VAR("ConnLimit", UINT, ConnLimit, "1024"),
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VAR("ContactInfo", STRING, ContactInfo, NULL),
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VAR("ControlPort", UINT, ControlPort, "0"),
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VAR("CookieAuthentication",BOOL, CookieAuthentication, "0"),
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VAR("DataDirectory", STRING, DataDirectory, NULL),
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VAR("DebugLogFile", STRING, DebugLogFile, NULL),
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VAR("DirAllowPrivateAddresses",BOOL, DirAllowPrivateAddresses, NULL),
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VAR("DirBindAddress", LINELIST, DirBindAddress, NULL),
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VAR("DirFetchPeriod", INTERVAL, DirFetchPeriod, "0 seconds"), /** DOCDOC **/
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VAR("DirPolicy", LINELIST, DirPolicy, NULL),
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VAR("DirPort", UINT, DirPort, "0"),
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OBSOLETE("DirPostPeriod"),
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VAR("DirServer", LINELIST, DirServers, NULL),
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VAR("EntryNodes", STRING, EntryNodes, NULL),
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VAR("ExcludeNodes", STRING, ExcludeNodes, NULL),
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VAR("ExitNodes", STRING, ExitNodes, NULL),
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VAR("ExitPolicy", LINELIST, ExitPolicy, NULL),
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VAR("FascistFirewall", BOOL, FascistFirewall, "0"),
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VAR("FirewallPorts", CSV, FirewallPorts, ""),
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VAR("Group", STRING, Group, NULL),
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VAR("HardwareAccel", BOOL, HardwareAccel, "1"),
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VAR("HashedControlPassword",STRING, HashedControlPassword, NULL),
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VAR("HiddenServiceDir", LINELIST_S, RendConfigLines, NULL),
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VAR("HiddenServiceExcludeNodes", LINELIST_S, RendConfigLines, NULL),
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VAR("HiddenServiceNodes", LINELIST_S, RendConfigLines, NULL),
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VAR("HiddenServiceOptions",LINELIST_V, RendConfigLines, NULL),
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VAR("HiddenServicePort", LINELIST_S, RendConfigLines, NULL),
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VAR("HttpProxy", STRING, HttpProxy, NULL),
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VAR("HttpProxyAuthenticator",STRING, HttpProxyAuthenticator,NULL),
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VAR("HttpsProxy", STRING, HttpsProxy, NULL),
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VAR("HttpsProxyAuthenticator",STRING,HttpsProxyAuthenticator,NULL),
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OBSOLETE("IgnoreVersion"),
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VAR("KeepalivePeriod", INTERVAL, KeepalivePeriod, "5 minutes"),
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VAR("Log", LINELIST, Logs, NULL),
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OBSOLETE("LinkPadding"),
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VAR("LogFile", LINELIST_S, OldLogOptions, NULL),
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VAR("LogLevel", LINELIST_S, OldLogOptions, NULL),
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VAR("LongLivedPorts", CSV, LongLivedPorts, "21,22,706,1863,5050,5190,5222,5223,6667,8300,8888"),
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VAR("MapAddress", LINELIST, AddressMap, NULL),
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VAR("MaxAdvertisedBandwidth",MEMUNIT,MaxAdvertisedBandwidth,"128 TB"),
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VAR("MaxCircuitDirtiness", INTERVAL, MaxCircuitDirtiness, "10 minutes"),
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VAR("MaxOnionsPending", UINT, MaxOnionsPending, "100"),
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OBSOLETE("MonthlyAccountingStart"),
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VAR("MyFamily", STRING, MyFamily, NULL),
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VAR("NewCircuitPeriod", INTERVAL, NewCircuitPeriod, "30 seconds"),
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VAR("Nickname", STRING, Nickname, NULL),
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VAR("NoPublish", BOOL, NoPublish, "0"),
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VAR("NodeFamily", LINELIST, NodeFamilies, NULL),
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VAR("NumCpus", UINT, NumCpus, "1"),
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VAR("NumHelperNodes", UINT, NumHelperNodes, "3"),
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VAR("ORBindAddress", LINELIST, ORBindAddress, NULL),
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VAR("ORPort", UINT, ORPort, "0"),
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VAR("OutboundBindAddress", STRING, OutboundBindAddress, NULL),
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VAR("PathlenCoinWeight", DOUBLE, PathlenCoinWeight, "0.3"),
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VAR("PidFile", STRING, PidFile, NULL),
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VAR("ReachableAddresses", LINELIST, ReachableAddresses, NULL),
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VAR("RecommendedVersions", LINELIST, RecommendedVersions, NULL),
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VAR("RecommendedClientVersions", LINELIST, RecommendedClientVersions, NULL),
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VAR("RecommendedServerVersions", LINELIST, RecommendedServerVersions, NULL),
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VAR("RedirectExit", LINELIST, RedirectExit, NULL),
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VAR("RendExcludeNodes", STRING, RendExcludeNodes, NULL),
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VAR("RendNodes", STRING, RendNodes, NULL),
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VAR("RendPostPeriod", INTERVAL, RendPostPeriod, "20 minutes"),
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VAR("RephistTrackTime", INTERVAL, RephistTrackTime, "24 hours"),
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OBSOLETE("RouterFile"),
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VAR("RunAsDaemon", BOOL, RunAsDaemon, "0"),
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VAR("RunTesting", BOOL, RunTesting, "0"),
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VAR("SafeLogging", BOOL, SafeLogging, "1"),
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VAR("ShutdownWaitLength", INTERVAL, ShutdownWaitLength, "30 seconds"),
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VAR("SocksBindAddress", LINELIST, SocksBindAddress, NULL),
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VAR("SocksPolicy", LINELIST, SocksPolicy, NULL),
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VAR("SocksPort", UINT, SocksPort, "9050"),
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VAR("StatusFetchPeriod", INTERVAL, StatusFetchPeriod, "0 seconds"), /** DOCDOC */
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VAR("StrictEntryNodes", BOOL, StrictEntryNodes, "0"),
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VAR("StrictExitNodes", BOOL, StrictExitNodes, "0"),
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VAR("SysLog", LINELIST_S, OldLogOptions, NULL),
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VAR("TrackHostExits", CSV, TrackHostExits, NULL),
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VAR("TrackHostExitsExpire",INTERVAL, TrackHostExitsExpire, "30 minutes"),
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OBSOLETE("TrafficShaping"),
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VAR("UseHelperNodes", BOOL, UseHelperNodes, "0"),
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VAR("User", STRING, User, NULL),
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VAR("__LeaveStreamsUnattached", BOOL,LeaveStreamsUnattached, "0"),
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{ NULL, CONFIG_TYPE_OBSOLETE, 0, NULL }
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};
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#undef VAR
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#define VAR(name,conftype,member,initvalue) \
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{ name, CONFIG_TYPE_ ## conftype, STRUCT_OFFSET(or_state_t, member), initvalue }
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static config_var_t _state_vars[] = {
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VAR("AccountingBytesReadInterval", MEMUNIT, AccountingBytesReadInInterval,NULL),
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VAR("AccountingBytesWrittenInInterval", MEMUNIT,
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AccountingBytesWrittenInInterval, NULL),
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VAR("AccountingExpectedUsage", MEMUNIT, AccountingExpectedUsage, NULL),
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VAR("AccountingIntervalStart", ISOTIME, AccountingIntervalStart, NULL),
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VAR("AccountingSecondsActive", INTERVAL, AccountingSecondsActive, NULL),
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VAR("HelperNode", LINELIST_S, HelperNodes, NULL),
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VAR("HelperNodeDownSince", LINELIST_S, HelperNodes, NULL),
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VAR("HelperNodeUnlistedSince", LINELIST_S, HelperNodes, NULL),
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VAR("HelperNodes", LINELIST_V, HelperNodes, NULL),
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VAR("LastWritten", ISOTIME, LastWritten, NULL),
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{ NULL, CONFIG_TYPE_OBSOLETE, 0, NULL }
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};
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#undef VAR
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#undef OBSOLETE
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/** DOCDOC*/
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typedef struct config_var_description_t {
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const char *name;
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const char *description;
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} config_var_description_t;
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static config_var_description_t options_description[] = {
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{ "Address", "The advertised (external) address we should use." },
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// { "AccountingStart", ""},
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{ NULL, NULL },
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};
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static config_var_description_t state_description[] = {
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{ "HelperNode", "One of the nodes we have chosen as a fixed entry" },
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{ "HelperNodeDownSince",
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"The last helper node has been down since this time." },
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{ "HelperNodeUnlistedSince",
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"The last helper node has been unlisted since this time." },
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{ NULL, NULL },
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};
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typedef int (*validate_fn_t)(void*);
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typedef struct {
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size_t size;
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uint32_t magic;
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off_t magic_offset;
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config_abbrev_t *abbrevs;
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config_var_t *vars;
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validate_fn_t validate_fn;
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config_var_description_t *descriptions;
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} config_format_t;
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#define CHECK(fmt, cfg) do { \
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tor_assert(fmt && cfg); \
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tor_assert((fmt)->magic == *(uint32_t*)(((char*)(cfg))+fmt->magic_offset)); \
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} while (0)
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/** Largest allowed config line */
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#define CONFIG_LINE_T_MAXLEN 4096
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static void config_line_append(config_line_t **lst,
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const char *key, const char *val);
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static void option_reset(config_format_t *fmt, or_options_t *options,
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config_var_t *var);
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static void config_free(config_format_t *fmt, void *options);
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static int option_is_same(config_format_t *fmt,
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or_options_t *o1, or_options_t *o2,const char *name);
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static or_options_t *options_dup(config_format_t *fmt, or_options_t *old);
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static int options_validate(or_options_t *options);
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static int options_act(or_options_t *old_options);
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static int options_transition_allowed(or_options_t *old, or_options_t *new);
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static int options_transition_affects_workers(or_options_t *old_options,
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or_options_t *new_options);
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static int options_transition_affects_descriptor(or_options_t *old_options,
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or_options_t *new_options);
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static int check_nickname_list(const char *lst, const char *name);
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static void config_register_addressmaps(or_options_t *options);
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static int parse_dir_server_line(const char *line, int validate_only);
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static int parse_redirect_line(smartlist_t *result,
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config_line_t *line);
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static int parse_log_severity_range(const char *range, int *min_out,
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int *max_out);
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static int convert_log_option(or_options_t *options,
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config_line_t *level_opt,
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config_line_t *file_opt, int isDaemon);
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static int add_single_log_option(or_options_t *options, int minSeverity,
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int maxSeverity,
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const char *type, const char *fname);
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static int normalize_log_options(or_options_t *options);
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static int validate_data_directory(or_options_t *options);
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static int write_configuration_file(const char *fname, or_options_t *options);
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static config_line_t *get_assigned_option(config_format_t *fmt,
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or_options_t *options, const char *key);
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static void config_init(config_format_t *fmt, void *options);
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static int or_state_validate(or_state_t *options);
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static uint64_t config_parse_memunit(const char *s, int *ok);
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static int config_parse_interval(const char *s, int *ok);
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static void print_cvs_version(void);
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static void parse_reachable_addresses(void);
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static int init_libevent(void);
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#if defined(HAVE_EVENT_GET_VERSION) && defined(HAVE_EVENT_GET_METHOD)
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static void check_libevent_version(const char *m, const char *v, int server);
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#endif
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/*static*/ or_options_t *options_new(void);
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#define OR_OPTIONS_MAGIC 9090909
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static config_format_t options_format = {
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sizeof(or_options_t),
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OR_OPTIONS_MAGIC,
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STRUCT_OFFSET(or_options_t, _magic),
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_option_abbrevs,
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_option_vars,
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(validate_fn_t)options_validate,
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options_description
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};
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#define OR_STATE_MAGIC 0x57A73f57
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static config_format_t state_format = {
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sizeof(or_state_t),
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OR_STATE_MAGIC,
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STRUCT_OFFSET(or_state_t, _magic),
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NULL,
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_state_vars,
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(validate_fn_t)or_state_validate,
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state_description
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};
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/*
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* Functions to read and write the global options pointer.
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*/
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/** Command-line and config-file options. */
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static or_options_t *global_options = NULL;
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/** Name of most recently read torrc file. */
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static char *torrc_fname = NULL;
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/** Persistant serialized state. */
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static or_state_t *global_state = NULL;
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/** DOCDOC */
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static addr_policy_t *reachable_addr_policy = NULL;
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static void *
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config_alloc(config_format_t *fmt)
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{
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void *opts = opts = tor_malloc_zero(fmt->size);
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*(uint32_t*)(((char*)opts)+fmt->magic_offset) = fmt->magic;
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CHECK(fmt, opts);
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return opts;
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}
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/** Return the currently configured options. */
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or_options_t *
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get_options(void)
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{
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tor_assert(global_options);
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return global_options;
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}
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/** Change the current global options to contain <b>new_val</b> instead of
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* their current value; take action based on the new value; free the old value
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* as necessary.
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*/
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void
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set_options(or_options_t *new_val)
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{
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or_options_t *old_options = global_options;
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global_options = new_val;
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/* Note that we pass the *old* options below, for comparison. It
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* pulls the new options directly out of global_options. */
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if (options_act(old_options) < 0) { /* acting on the options failed. die. */
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log_fn(LOG_ERR,"Acting on config options left us in a broken state. Dying.");
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exit(1);
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}
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if (old_options)
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config_free(&options_format, old_options);
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}
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void
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config_free_all(void)
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{
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config_free(&options_format, global_options);
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tor_free(torrc_fname);
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addr_policy_free(reachable_addr_policy);
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reachable_addr_policy = NULL;
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}
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/** If options->SafeLogging is on, return a not very useful string,
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* else return address.
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*/
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const char *
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safe_str(const char *address)
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{
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if (get_options()->SafeLogging)
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return "[scrubbed]";
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else
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return address;
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}
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/** Fetch the active option list, and take actions based on it. All of the
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* things we do should survive being done repeatedly. If present,
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* <b>old_options</b> contains the previous value of the options.
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*
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* Return 0 if all goes well, return -1 if it's time to die.
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*
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* Note 2: We haven't moved all the "act on new configuration" logic
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* here yet. Some is still in do_hup() and other places.
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*/
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static int
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options_act(or_options_t *old_options)
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{
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config_line_t *cl;
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char *fn;
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size_t len;
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or_options_t *options = get_options();
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int running_tor = options->command == CMD_RUN_TOR;
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static int libevent_initialized = 0;
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if (running_tor && options->RunAsDaemon) {
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start_daemon();
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}
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clear_trusted_dir_servers();
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for (cl = options->DirServers; cl; cl = cl->next) {
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if (parse_dir_server_line(cl->value, 0)<0) {
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log_fn(LOG_ERR,
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"Bug: Previously validated DirServer line could not be added!");
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return -1;
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}
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}
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|
|
if (running_tor && rend_config_services(options, 0)<0) {
|
|
log_fn(LOG_ERR,
|
|
"Bug: Previously validated hidden services line could not be added!");
|
|
return -1;
|
|
}
|
|
|
|
if (options->EntryNodes && strlen(options->EntryNodes))
|
|
options->UseHelperNodes = 0;
|
|
|
|
/* Setuid/setgid as appropriate */
|
|
if (options->User || options->Group) {
|
|
if (switch_id(options->User, options->Group) != 0) {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
/* Ensure data directory is private; create if possible. */
|
|
if (check_private_dir(options->DataDirectory, CPD_CREATE) != 0) {
|
|
log_fn(LOG_ERR, "Couldn't access/create private data directory \"%s\"",
|
|
options->DataDirectory);
|
|
return -1;
|
|
}
|
|
if (running_tor) {
|
|
len = strlen(options->DataDirectory)+32;
|
|
fn = tor_malloc(len);
|
|
tor_snprintf(fn, len, "%s/cached-status", options->DataDirectory);
|
|
if (check_private_dir(fn, CPD_CREATE) != 0) {
|
|
log_fn(LOG_ERR, "Couldn't access/create private data directory \"%s\"",
|
|
fn);
|
|
tor_free(fn);
|
|
return -1;
|
|
}
|
|
tor_free(fn);
|
|
}
|
|
|
|
/* Bail out at this point if we're not going to be a client or server:
|
|
* we want to not fork, and to log stuff to stderr. */
|
|
if (options->command != CMD_RUN_TOR)
|
|
return 0;
|
|
|
|
mark_logs_temp(); /* Close current logs once new logs are open. */
|
|
if (options_init_logs(options, 0)<0) /* Configure the log(s) */
|
|
return -1;
|
|
|
|
/* Close the temporary log we used while starting up, if it isn't already
|
|
* gone. */
|
|
close_temp_logs();
|
|
add_callback_log(LOG_ERR, LOG_ERR, control_event_logmsg);
|
|
control_adjust_event_log_severity();
|
|
|
|
/* Set up libevent. */
|
|
if (running_tor && !libevent_initialized) {
|
|
if (init_libevent())
|
|
return -1;
|
|
libevent_initialized = 1;
|
|
}
|
|
|
|
/* Load state */
|
|
if (! global_state)
|
|
if (or_state_load())
|
|
return -1;
|
|
|
|
options->_ConnLimit =
|
|
set_max_file_descriptors((unsigned)options->ConnLimit, MAXCONNECTIONS);
|
|
if (options->_ConnLimit < 0)
|
|
return -1;
|
|
|
|
{
|
|
smartlist_t *sl = smartlist_create();
|
|
for (cl = options->RedirectExit; cl; cl = cl->next) {
|
|
if (parse_redirect_line(sl, cl)<0)
|
|
return -1;
|
|
}
|
|
set_exit_redirects(sl);
|
|
}
|
|
|
|
/* Finish backgrounding the process */
|
|
if (running_tor && options->RunAsDaemon) {
|
|
/* We may be calling this for the n'th time (on SIGHUP), but it's safe. */
|
|
finish_daemon(options->DataDirectory);
|
|
}
|
|
|
|
/* Write our pid to the pid file. If we do not have write permissions we
|
|
* will log a warning */
|
|
if (running_tor && options->PidFile)
|
|
write_pidfile(options->PidFile);
|
|
|
|
/* Register addressmap directives */
|
|
config_register_addressmaps(options);
|
|
|
|
/* Update address policies. */
|
|
parse_socks_policy();
|
|
parse_dir_policy();
|
|
parse_reachable_addresses();
|
|
|
|
init_cookie_authentication(options->CookieAuthentication);
|
|
|
|
/* reload keys as needed for rendezvous services. */
|
|
if (rend_service_load_keys()<0) {
|
|
log_fn(LOG_ERR,"Error loading rendezvous service keys");
|
|
return -1;
|
|
}
|
|
|
|
/* Set up accounting */
|
|
if (accounting_parse_options(options, 0)<0) {
|
|
log_fn(LOG_ERR,"Error in accounting options");
|
|
return -1;
|
|
}
|
|
if (accounting_is_enabled(options))
|
|
configure_accounting(time(NULL));
|
|
|
|
if (!running_tor)
|
|
return 0;
|
|
|
|
if (!we_are_hibernating() && retry_all_listeners(0) < 0) {
|
|
log_fn(LOG_ERR,"Failed to bind one of the listener ports.");
|
|
return -1;
|
|
}
|
|
|
|
/* Check for transitions that need action. */
|
|
if (old_options) {
|
|
if (options_transition_affects_workers(old_options, options)) {
|
|
log_fn(LOG_INFO,"Worker-related options changed. Rotating workers.");
|
|
cpuworkers_rotate();
|
|
dnsworkers_rotate();
|
|
}
|
|
}
|
|
|
|
/* Since our options changed, we might need to regenerate and upload our
|
|
* server descriptor.
|
|
*/
|
|
if (!old_options || options_transition_affects_descriptor(old_options, options))
|
|
mark_my_descriptor_dirty();
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Functions to parse config options
|
|
*/
|
|
|
|
/** If <b>option</b> is an official abbreviation for a longer option,
|
|
* return the longer option. Otherwise return <b>option</b>.
|
|
* If <b>command_line</b> is set, apply all abbreviations. Otherwise, only
|
|
* apply abbreviations that work for the config file and the command line. */
|
|
static const char *
|
|
expand_abbrev(config_format_t *fmt, const char *option, int command_line)
|
|
{
|
|
int i;
|
|
if (! fmt->abbrevs)
|
|
return option;
|
|
for (i=0; fmt->abbrevs[i].abbreviated; ++i) {
|
|
/* Abbreviations aren't casei. */
|
|
if (!strcasecmp(option,fmt->abbrevs[i].abbreviated) &&
|
|
(command_line || !fmt->abbrevs[i].commandline_only)) {
|
|
return fmt->abbrevs[i].full;
|
|
}
|
|
}
|
|
return option;
|
|
}
|
|
|
|
/** Helper: Read a list of configuration options from the command line. */
|
|
static config_line_t *
|
|
config_get_commandlines(int argc, char **argv)
|
|
{
|
|
config_line_t *front = NULL;
|
|
config_line_t **new = &front;
|
|
char *s;
|
|
int i = 1;
|
|
|
|
while (i < argc-1) {
|
|
if (!strcmp(argv[i],"-f") ||
|
|
!strcmp(argv[i],"--hash-password")) {
|
|
i += 2; /* command-line option with argument. ignore them. */
|
|
continue;
|
|
} else if (!strcmp(argv[i],"--list-fingerprint")) {
|
|
i += 1; /* command-line option. ignore it. */
|
|
continue;
|
|
} else if (!strcmp(argv[i],"--nt-service")) {
|
|
i += 1;
|
|
continue;
|
|
}
|
|
|
|
*new = tor_malloc_zero(sizeof(config_line_t));
|
|
s = argv[i];
|
|
|
|
while (*s == '-')
|
|
s++;
|
|
|
|
(*new)->key = tor_strdup(expand_abbrev(&options_format, s, 1));
|
|
(*new)->value = tor_strdup(argv[i+1]);
|
|
(*new)->next = NULL;
|
|
log(LOG_DEBUG,"Commandline: parsed keyword '%s', value '%s'",
|
|
(*new)->key, (*new)->value);
|
|
|
|
new = &((*new)->next);
|
|
i += 2;
|
|
}
|
|
return front;
|
|
}
|
|
|
|
/** Helper: allocate a new configuration option mapping 'key' to 'val',
|
|
* append it to *<b>lst</b>. */
|
|
static void
|
|
config_line_append(config_line_t **lst,
|
|
const char *key,
|
|
const char *val)
|
|
{
|
|
config_line_t *newline;
|
|
|
|
newline = tor_malloc(sizeof(config_line_t));
|
|
newline->key = tor_strdup(key);
|
|
newline->value = tor_strdup(val);
|
|
newline->next = NULL;
|
|
while (*lst)
|
|
lst = &((*lst)->next);
|
|
|
|
(*lst) = newline;
|
|
}
|
|
|
|
/** Helper: parse the config string and strdup into key/value
|
|
* strings. Set *result to the list, or NULL if parsing the string
|
|
* failed. Return 0 on success, -1 on failure. Warn and ignore any
|
|
* misformatted lines. */
|
|
int
|
|
config_get_lines(char *string, config_line_t **result)
|
|
{
|
|
config_line_t *list = NULL, **next;
|
|
char *k, *v;
|
|
|
|
next = &list;
|
|
do {
|
|
string = parse_line_from_str(string, &k, &v);
|
|
if (!string) {
|
|
config_free_lines(list);
|
|
return -1;
|
|
}
|
|
if (k && v) {
|
|
/* This list can get long, so we keep a pointer to the end of it
|
|
* rather than using config_line_append over and over and getting n^2
|
|
* performance. This is the only really long list. */
|
|
*next = tor_malloc(sizeof(config_line_t));
|
|
(*next)->key = tor_strdup(k);
|
|
(*next)->value = tor_strdup(v);
|
|
(*next)->next = NULL;
|
|
next = &((*next)->next);
|
|
}
|
|
} while (*string);
|
|
|
|
*result = list;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Free all the configuration lines on the linked list <b>front</b>.
|
|
*/
|
|
void
|
|
config_free_lines(config_line_t *front)
|
|
{
|
|
config_line_t *tmp;
|
|
|
|
while (front) {
|
|
tmp = front;
|
|
front = tmp->next;
|
|
|
|
tor_free(tmp->key);
|
|
tor_free(tmp->value);
|
|
tor_free(tmp);
|
|
}
|
|
}
|
|
|
|
/** DOCDOC */
|
|
static const char *
|
|
config_find_description(config_format_t *fmt, const char *name)
|
|
{
|
|
int i;
|
|
for (i=0; fmt->descriptions[i].name; ++i) {
|
|
if (!strcasecmp(name, fmt->descriptions[i].name))
|
|
return fmt->descriptions[i].description;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/** If <b>key</b> is a configuration option, return the corresponding
|
|
* config_var_t. Otherwise, if <b>key</b> is a non-standard abbreviation,
|
|
* warn, and return the corresponding config_var_t. Otherwise return NULL.
|
|
*/
|
|
static config_var_t *
|
|
config_find_option(config_format_t *fmt, const char *key)
|
|
{
|
|
int i;
|
|
size_t keylen = strlen(key);
|
|
if (!keylen)
|
|
return NULL; /* if they say "--" on the commandline, it's not an option */
|
|
/* First, check for an exact (case-insensitive) match */
|
|
for (i=0; fmt->vars[i].name; ++i) {
|
|
if (!strcasecmp(key, fmt->vars[i].name)) {
|
|
return &fmt->vars[i];
|
|
}
|
|
}
|
|
/* If none, check for an abbreviated match */
|
|
for (i=0; fmt->vars[i].name; ++i) {
|
|
if (!strncasecmp(key, fmt->vars[i].name, keylen)) {
|
|
log_fn(LOG_WARN, "The abbreviation '%s' is deprecated. "
|
|
"Please use '%s' instead",
|
|
key, fmt->vars[i].name);
|
|
return &fmt->vars[i];
|
|
}
|
|
}
|
|
/* Okay, unrecognized options */
|
|
return NULL;
|
|
}
|
|
|
|
/** If <b>c</b> is a syntactically valid configuration line, update
|
|
* <b>options</b> with its value and return 0. Otherwise return -1 for bad key,
|
|
* -2 for bad value.
|
|
*
|
|
* If 'reset' is set, and we get a line containing no value, restore the
|
|
* option to its default value.
|
|
*/
|
|
static int
|
|
config_assign_line(config_format_t *fmt,
|
|
or_options_t *options, config_line_t *c, int reset)
|
|
{
|
|
int i, ok;
|
|
config_var_t *var;
|
|
void *lvalue;
|
|
|
|
CHECK(fmt, options);
|
|
|
|
var = config_find_option(fmt, c->key);
|
|
if (!var) {
|
|
log_fn(LOG_WARN, "Unknown option '%s'. Failing.", c->key);
|
|
return -1;
|
|
}
|
|
/* Put keyword into canonical case. */
|
|
if (strcmp(var->name, c->key)) {
|
|
tor_free(c->key);
|
|
c->key = tor_strdup(var->name);
|
|
}
|
|
|
|
if (reset && !strlen(c->value)) {
|
|
option_reset(fmt, options, var);
|
|
return 0;
|
|
}
|
|
|
|
lvalue = ((char*)options) + var->var_offset;
|
|
switch (var->type) {
|
|
|
|
case CONFIG_TYPE_UINT:
|
|
i = tor_parse_long(c->value, 10, 0, INT_MAX, &ok, NULL);
|
|
if (!ok) {
|
|
log(LOG_WARN, "Int keyword '%s %s' is malformed or out of bounds.",
|
|
c->key,c->value);
|
|
return -2;
|
|
}
|
|
*(int *)lvalue = i;
|
|
break;
|
|
|
|
case CONFIG_TYPE_INTERVAL: {
|
|
i = config_parse_interval(c->value, &ok);
|
|
if (!ok) {
|
|
return -2;
|
|
}
|
|
*(int *)lvalue = i;
|
|
break;
|
|
}
|
|
|
|
case CONFIG_TYPE_MEMUNIT: {
|
|
uint64_t u64 = config_parse_memunit(c->value, &ok);
|
|
if (!ok) {
|
|
return -2;
|
|
}
|
|
*(uint64_t *)lvalue = u64;
|
|
break;
|
|
}
|
|
|
|
case CONFIG_TYPE_BOOL:
|
|
i = tor_parse_long(c->value, 10, 0, 1, &ok, NULL);
|
|
if (!ok) {
|
|
log(LOG_WARN, "Boolean keyword '%s' expects 0 or 1.", c->key);
|
|
return -2;
|
|
}
|
|
*(int *)lvalue = i;
|
|
break;
|
|
|
|
case CONFIG_TYPE_STRING:
|
|
tor_free(*(char **)lvalue);
|
|
*(char **)lvalue = tor_strdup(c->value);
|
|
break;
|
|
|
|
case CONFIG_TYPE_DOUBLE:
|
|
*(double *)lvalue = atof(c->value);
|
|
break;
|
|
|
|
case CONFIG_TYPE_ISOTIME:
|
|
if (parse_iso_time(c->value, (time_t *)lvalue)) {
|
|
log(LOG_WARN, "Invalid time '%s' for keyword '%s'", c->value, c->key);
|
|
return -2;
|
|
}
|
|
break;
|
|
|
|
case CONFIG_TYPE_CSV:
|
|
if (*(smartlist_t**)lvalue) {
|
|
SMARTLIST_FOREACH(*(smartlist_t**)lvalue, char *, cp, tor_free(cp));
|
|
smartlist_clear(*(smartlist_t**)lvalue);
|
|
} else {
|
|
*(smartlist_t**)lvalue = smartlist_create();
|
|
}
|
|
|
|
smartlist_split_string(*(smartlist_t**)lvalue, c->value, ",",
|
|
SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, 0);
|
|
break;
|
|
|
|
case CONFIG_TYPE_LINELIST:
|
|
case CONFIG_TYPE_LINELIST_S:
|
|
config_line_append((config_line_t**)lvalue, c->key, c->value);
|
|
break;
|
|
|
|
case CONFIG_TYPE_OBSOLETE:
|
|
log_fn(LOG_WARN, "Skipping obsolete configuration option '%s'", c->key);
|
|
break;
|
|
case CONFIG_TYPE_LINELIST_V:
|
|
log_fn(LOG_WARN, "Can't provide value for virtual option '%s'", c->key);
|
|
return -2;
|
|
default:
|
|
tor_assert(0);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/** restore the option named <b>key</b> in options to its default value. */
|
|
static void
|
|
config_reset_line(config_format_t *fmt, or_options_t *options, const char *key)
|
|
{
|
|
config_var_t *var;
|
|
|
|
CHECK(fmt, options);
|
|
|
|
var = config_find_option(fmt, key);
|
|
if (!var)
|
|
return; /* give error on next pass. */
|
|
|
|
option_reset(fmt, options, var);
|
|
}
|
|
|
|
/** Return true iff key is a valid configuration option. */
|
|
int
|
|
option_is_recognized(const char *key)
|
|
{
|
|
config_var_t *var = config_find_option(&options_format, key);
|
|
return (var != NULL);
|
|
}
|
|
|
|
/** Return the canonical name of a configuration option. */
|
|
const char *
|
|
option_get_canonical_name(const char *key)
|
|
{
|
|
config_var_t *var = config_find_option(&options_format, key);
|
|
return var->name;
|
|
}
|
|
|
|
/** Return a canonicalized list of the options assigned for key.
|
|
*/
|
|
config_line_t *
|
|
option_get_assignment(or_options_t *options, const char *key)
|
|
{
|
|
return get_assigned_option(&options_format, options, key);
|
|
}
|
|
|
|
static config_line_t *
|
|
config_lines_dup(const config_line_t *inp)
|
|
{
|
|
config_line_t *result = NULL;
|
|
config_line_t **next_out = &result;
|
|
while (inp) {
|
|
*next_out = tor_malloc(sizeof(config_line_t));
|
|
(*next_out)->key = tor_strdup(inp->key);
|
|
(*next_out)->value = tor_strdup(inp->value);
|
|
inp = inp->next;
|
|
next_out = &((*next_out)->next);
|
|
}
|
|
(*next_out) = NULL;
|
|
return result;
|
|
}
|
|
|
|
static config_line_t *
|
|
get_assigned_option(config_format_t *fmt, or_options_t *options, const char *key)
|
|
{
|
|
config_var_t *var;
|
|
const void *value;
|
|
char buf[32];
|
|
config_line_t *result;
|
|
tor_assert(options && key);
|
|
|
|
CHECK(fmt, options);
|
|
|
|
var = config_find_option(fmt, key);
|
|
if (!var) {
|
|
log_fn(LOG_WARN, "Unknown option '%s'. Failing.", key);
|
|
return NULL;
|
|
} else if (var->type == CONFIG_TYPE_LINELIST_S) {
|
|
log_fn(LOG_WARN, "Can't return context-sensitive '%s' on its own", key);
|
|
return NULL;
|
|
}
|
|
value = ((char*)options) + var->var_offset;
|
|
|
|
if (var->type == CONFIG_TYPE_LINELIST ||
|
|
var->type == CONFIG_TYPE_LINELIST_V) {
|
|
/* Linelist requires special handling: we just copy and return it. */
|
|
return config_lines_dup(*(const config_line_t**)value);
|
|
}
|
|
|
|
result = tor_malloc_zero(sizeof(config_line_t));
|
|
result->key = tor_strdup(var->name);
|
|
switch (var->type)
|
|
{
|
|
case CONFIG_TYPE_STRING:
|
|
if (*(char**)value) {
|
|
result->value = tor_strdup(*(char**)value);
|
|
} else {
|
|
tor_free(result->key);
|
|
tor_free(result);
|
|
return NULL;
|
|
}
|
|
break;
|
|
case CONFIG_TYPE_ISOTIME:
|
|
if (*(time_t*)value) {
|
|
result->value = tor_malloc(ISO_TIME_LEN+1);
|
|
format_iso_time(result->value, *(time_t*)value);
|
|
} else {
|
|
tor_free(result->key);
|
|
tor_free(result);
|
|
}
|
|
break;
|
|
case CONFIG_TYPE_INTERVAL:
|
|
case CONFIG_TYPE_UINT:
|
|
/* This means every or_options_t uint or bool element
|
|
* needs to be an int. Not, say, a uint16_t or char. */
|
|
tor_snprintf(buf, sizeof(buf), "%d", *(int*)value);
|
|
result->value = tor_strdup(buf);
|
|
break;
|
|
case CONFIG_TYPE_MEMUNIT:
|
|
tor_snprintf(buf, sizeof(buf), U64_FORMAT,
|
|
U64_PRINTF_ARG(*(uint64_t*)value));
|
|
result->value = tor_strdup(buf);
|
|
break;
|
|
case CONFIG_TYPE_DOUBLE:
|
|
tor_snprintf(buf, sizeof(buf), "%f", *(double*)value);
|
|
result->value = tor_strdup(buf);
|
|
break;
|
|
case CONFIG_TYPE_BOOL:
|
|
result->value = tor_strdup(*(int*)value ? "1" : "0");
|
|
break;
|
|
case CONFIG_TYPE_CSV:
|
|
if (*(smartlist_t**)value)
|
|
result->value = smartlist_join_strings(*(smartlist_t**)value,",",0,NULL);
|
|
else
|
|
result->value = tor_strdup("");
|
|
break;
|
|
case CONFIG_TYPE_OBSOLETE:
|
|
log_fn(LOG_WARN,"You asked me for the value of an obsolete config option '%s'.", key);
|
|
tor_free(result->key);
|
|
tor_free(result);
|
|
return NULL;
|
|
default:
|
|
tor_free(result->key);
|
|
tor_free(result);
|
|
log_fn(LOG_WARN,"Bug: unknown type %d for known key '%s'", var->type, key);
|
|
return NULL;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/** Iterate through the linked list of requested options <b>list</b>.
|
|
* For each item, convert as appropriate and assign to <b>options</b>.
|
|
* If an item is unrecognized, return -1 immediately,
|
|
* else return 0 for success.
|
|
*
|
|
* If <b>reset</b>, then interpret empty lines as meaning "restore to
|
|
* default value", and interpret LINELIST* options as replacing (not
|
|
* extending) their previous values. Return 0 on success, -1 on bad key,
|
|
* -2 on bad value.
|
|
*/
|
|
static int
|
|
config_assign(config_format_t *fmt,
|
|
void *options, config_line_t *list, int reset)
|
|
{
|
|
config_line_t *p;
|
|
|
|
CHECK(fmt, options);
|
|
|
|
/* pass 1: normalize keys */
|
|
for (p = list; p; p = p->next) {
|
|
const char *full = expand_abbrev(fmt, p->key, 0);
|
|
if (strcmp(full,p->key)) {
|
|
tor_free(p->key);
|
|
p->key = tor_strdup(full);
|
|
}
|
|
}
|
|
|
|
/* pass 2: if we're reading from a resetting source, clear all mentioned
|
|
* linelists. */
|
|
if (reset) {
|
|
for (p = list; p; p = p->next)
|
|
config_reset_line(fmt, options, p->key);
|
|
}
|
|
|
|
/* pass 3: assign. */
|
|
while (list) {
|
|
int r;
|
|
if ((r=config_assign_line(fmt, options, list, reset)))
|
|
return r;
|
|
list = list->next;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/** Try assigning <b>list</b> to the global options. You do this by duping
|
|
* options, assigning list to the new one, then validating it. If it's
|
|
* ok, then throw out the old one and stick with the new one. Else,
|
|
* revert to old and return failure. Return 0 on success, -1 on bad
|
|
* keys, -2 on bad values, -3 on bad transition.
|
|
*/
|
|
int
|
|
options_trial_assign(config_line_t *list, int reset)
|
|
{
|
|
int r;
|
|
or_options_t *trial_options = options_dup(&options_format, get_options());
|
|
|
|
if ((r=config_assign(&options_format, trial_options, list, reset)) < 0) {
|
|
config_free(&options_format, trial_options);
|
|
return r;
|
|
}
|
|
|
|
if (options_validate(trial_options) < 0) {
|
|
config_free(&options_format, trial_options);
|
|
return -2;
|
|
}
|
|
|
|
if (options_transition_allowed(get_options(), trial_options) < 0) {
|
|
config_free(&options_format, trial_options);
|
|
return -3;
|
|
}
|
|
|
|
set_options(trial_options); /* we liked it. put it in place. */
|
|
return 0;
|
|
}
|
|
|
|
/** Replace the option indexed by <b>var</b> in <b>options</b> with its
|
|
* default value. */
|
|
static void
|
|
option_reset(config_format_t *fmt, or_options_t *options, config_var_t *var)
|
|
{
|
|
config_line_t *c;
|
|
void *lvalue;
|
|
|
|
CHECK(fmt, options);
|
|
|
|
lvalue = ((char*)options) + var->var_offset;
|
|
switch (var->type) {
|
|
case CONFIG_TYPE_STRING:
|
|
tor_free(*(char**)lvalue);
|
|
break;
|
|
case CONFIG_TYPE_DOUBLE:
|
|
*(double*)lvalue = 0.0;
|
|
break;
|
|
case CONFIG_TYPE_ISOTIME:
|
|
*(time_t*)lvalue = 0;
|
|
case CONFIG_TYPE_INTERVAL:
|
|
case CONFIG_TYPE_UINT:
|
|
case CONFIG_TYPE_BOOL:
|
|
*(int*)lvalue = 0;
|
|
break;
|
|
case CONFIG_TYPE_MEMUNIT:
|
|
*(uint64_t*)lvalue = 0;
|
|
break;
|
|
case CONFIG_TYPE_CSV:
|
|
if (*(smartlist_t**)lvalue) {
|
|
SMARTLIST_FOREACH(*(smartlist_t **)lvalue, char *, cp, tor_free(cp));
|
|
smartlist_free(*(smartlist_t **)lvalue);
|
|
*(smartlist_t **)lvalue = NULL;
|
|
}
|
|
break;
|
|
case CONFIG_TYPE_LINELIST:
|
|
case CONFIG_TYPE_LINELIST_S:
|
|
config_free_lines(*(config_line_t **)lvalue);
|
|
*(config_line_t **)lvalue = NULL;
|
|
break;
|
|
case CONFIG_TYPE_LINELIST_V:
|
|
/* handled by linelist_s. */
|
|
break;
|
|
case CONFIG_TYPE_OBSOLETE:
|
|
break;
|
|
}
|
|
if (var->initvalue) {
|
|
c = tor_malloc_zero(sizeof(config_line_t));
|
|
c->key = tor_strdup(var->name);
|
|
c->value = tor_strdup(var->initvalue);
|
|
config_assign_line(fmt, options,c,0);
|
|
config_free_lines(c);
|
|
}
|
|
}
|
|
|
|
/** Set <b>options</b>->DirServers to contain the default directory
|
|
* servers. */
|
|
static void
|
|
add_default_trusted_dirservers(or_options_t *options)
|
|
{
|
|
/* moria1 */
|
|
config_line_append(&options->DirServers, "DirServer",
|
|
"18.244.0.188:9031 FFCB 46DB 1339 DA84 674C 70D7 CB58 6434 C437 0441");
|
|
/* moria2 */
|
|
config_line_append(&options->DirServers, "DirServer",
|
|
"18.244.0.114:80 719B E45D E224 B607 C537 07D0 E214 3E2D 423E 74CF");
|
|
/* tor26 */
|
|
config_line_append(&options->DirServers, "DirServer",
|
|
"86.59.5.130:80 847B 1F85 0344 D787 6491 A548 92F9 0493 4E4E B85D");
|
|
// "tor.noreply.org:9030 847B 1F85 0344 D787 6491 A548 92F9 0493 4E4E B85D");
|
|
}
|
|
|
|
/** Print a usage message for tor. */
|
|
static void
|
|
print_usage(void)
|
|
{
|
|
printf(
|
|
"Copyright 2001-2005 Roger Dingledine, Nick Mathewson.\n\n"
|
|
"tor -f <torrc> [args]\n"
|
|
"See man page for options, or http://tor.eff.org/ for documentation.\n");
|
|
}
|
|
|
|
/**
|
|
* Based on <b>options-\>Address</b>, guess our public IP address and put it
|
|
* (in host order) into *<b>addr_out</b>. If <b>hostname_out</b> is provided, set
|
|
* *<b>hostname_out</b> to a new string holding the hostname we used to get
|
|
* the address. Return 0 if all is well, or -1 if we can't find a suitable
|
|
* public IP address.
|
|
*/
|
|
int
|
|
resolve_my_address(or_options_t *options, uint32_t *addr_out, char **hostname_out)
|
|
{
|
|
struct in_addr in;
|
|
struct hostent *rent;
|
|
char hostname[256];
|
|
int explicit_ip=1;
|
|
char tmpbuf[INET_NTOA_BUF_LEN];
|
|
static uint32_t old_addr=0;
|
|
const char *address = options->Address;
|
|
|
|
tor_assert(addr_out);
|
|
|
|
/* workaround: some people were leaving "Address " in their torrc,
|
|
* and they had a buggy resolver that resolved " " to 0.0.0.0. Oops.
|
|
*/
|
|
if (address)
|
|
while (TOR_ISSPACE(*address))
|
|
address++;
|
|
|
|
if (address && *address) {
|
|
strlcpy(hostname, address, sizeof(hostname));
|
|
} else { /* then we need to guess our address */
|
|
explicit_ip = 0; /* it's implicit */
|
|
|
|
if (gethostname(hostname, sizeof(hostname)) < 0) {
|
|
log_fn(LOG_WARN,"Error obtaining local hostname");
|
|
return -1;
|
|
}
|
|
log_fn(LOG_DEBUG,"Guessed local host name as '%s'",hostname);
|
|
}
|
|
|
|
/* now we know hostname. resolve it and keep only the IP */
|
|
|
|
if (tor_inet_aton(hostname, &in) == 0) {
|
|
/* then we have to resolve it */
|
|
explicit_ip = 0;
|
|
rent = (struct hostent *)gethostbyname(hostname);
|
|
if (!rent) {
|
|
log_fn(LOG_WARN,"Could not resolve local Address '%s'. Failing.", hostname);
|
|
return -1;
|
|
}
|
|
tor_assert(rent->h_length == 4);
|
|
memcpy(&in.s_addr, rent->h_addr, rent->h_length);
|
|
}
|
|
|
|
tor_inet_ntoa(&in,tmpbuf,sizeof(tmpbuf));
|
|
if (is_internal_IP(htonl(in.s_addr)) && !options->NoPublish) {
|
|
/* make sure we're ok with publishing an internal IP */
|
|
if (!options->DirServers) {
|
|
/* if they are using the default dirservers, disallow internal IPs always. */
|
|
log_fn(LOG_WARN,"Address '%s' resolves to private IP '%s'. "
|
|
"Tor servers that use the default DirServers must have public IP addresses.",
|
|
hostname, tmpbuf);
|
|
return -1;
|
|
}
|
|
if (!explicit_ip) {
|
|
/* even if they've set their own dirservers, require an explicit IP if
|
|
* they're using an internal address. */
|
|
log_fn(LOG_WARN,"Address '%s' resolves to private IP '%s'. "
|
|
"Please set the Address config option to be the IP you want to use.",
|
|
hostname, tmpbuf);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
log_fn(LOG_DEBUG, "Resolved Address to '%s'.", tmpbuf);
|
|
*addr_out = ntohl(in.s_addr);
|
|
if (old_addr && old_addr != *addr_out) {
|
|
log_fn(LOG_NOTICE,"Your IP seems to have changed. Updating.");
|
|
server_has_changed_ip();
|
|
}
|
|
old_addr = *addr_out;
|
|
if (hostname_out)
|
|
*hostname_out = tor_strdup(hostname);
|
|
return 0;
|
|
}
|
|
|
|
/** Called when we don't have a nickname set. Try to guess a good
|
|
* nickname based on the hostname, and return it in a newly allocated string. */
|
|
static char *
|
|
get_default_nickname(void)
|
|
{
|
|
char localhostname[256];
|
|
char *cp, *out, *outp;
|
|
|
|
if (gethostname(localhostname, sizeof(localhostname)) < 0) {
|
|
log_fn(LOG_WARN,"Error obtaining local hostname");
|
|
return NULL;
|
|
}
|
|
|
|
/* Put it in lowercase; stop at the first dot. */
|
|
for (cp = localhostname; *cp; ++cp) {
|
|
if (*cp == '.') {
|
|
*cp = '\0';
|
|
break;
|
|
}
|
|
*cp = tolower(*cp);
|
|
}
|
|
|
|
/* Strip invalid characters. */
|
|
cp = localhostname;
|
|
out = outp = tor_malloc(strlen(localhostname) + 1);
|
|
while (*cp) {
|
|
if (strchr(LEGAL_NICKNAME_CHARACTERS, *cp))
|
|
*outp++ = *cp++;
|
|
else
|
|
cp++;
|
|
}
|
|
*outp = '\0';
|
|
|
|
/* Enforce length. */
|
|
if (strlen(out) > MAX_NICKNAME_LEN)
|
|
out[MAX_NICKNAME_LEN]='\0';
|
|
|
|
return out;
|
|
}
|
|
|
|
/** Release storage held by <b>options</b> */
|
|
static void
|
|
config_free(config_format_t *fmt, void *options)
|
|
{
|
|
int i;
|
|
void *lvalue;
|
|
|
|
tor_assert(options);
|
|
|
|
for (i=0; fmt->vars[i].name; ++i) {
|
|
lvalue = ((char*)options) + fmt->vars[i].var_offset;
|
|
switch (fmt->vars[i].type) {
|
|
case CONFIG_TYPE_MEMUNIT:
|
|
case CONFIG_TYPE_INTERVAL:
|
|
case CONFIG_TYPE_UINT:
|
|
case CONFIG_TYPE_BOOL:
|
|
case CONFIG_TYPE_DOUBLE:
|
|
case CONFIG_TYPE_ISOTIME:
|
|
case CONFIG_TYPE_OBSOLETE:
|
|
break; /* nothing to free for these config types */
|
|
case CONFIG_TYPE_STRING:
|
|
tor_free(*(char **)lvalue);
|
|
break;
|
|
case CONFIG_TYPE_LINELIST:
|
|
case CONFIG_TYPE_LINELIST_V:
|
|
config_free_lines(*(config_line_t**)lvalue);
|
|
*(config_line_t**)lvalue = NULL;
|
|
break;
|
|
case CONFIG_TYPE_CSV:
|
|
if (*(smartlist_t**)lvalue) {
|
|
SMARTLIST_FOREACH(*(smartlist_t**)lvalue, char *, cp, tor_free(cp));
|
|
smartlist_free(*(smartlist_t**)lvalue);
|
|
*(smartlist_t**)lvalue = NULL;
|
|
}
|
|
break;
|
|
case CONFIG_TYPE_LINELIST_S:
|
|
/* will be freed by corresponding LINELIST_V. */
|
|
break;
|
|
}
|
|
}
|
|
tor_free(options);
|
|
}
|
|
|
|
/** Return true iff the option <b>var</b> has the same value in <b>o1</b>
|
|
* and <b>o2</b>. Must not be called for LINELIST_S or OBSOLETE options.
|
|
*/
|
|
static int
|
|
option_is_same(config_format_t *fmt,
|
|
or_options_t *o1, or_options_t *o2, const char *name)
|
|
{
|
|
config_line_t *c1, *c2;
|
|
int r = 1;
|
|
CHECK(fmt, o1);
|
|
CHECK(fmt, o2);
|
|
|
|
c1 = get_assigned_option(fmt, o1, name);
|
|
c2 = get_assigned_option(fmt, o2, name);
|
|
while (c1 && c2) {
|
|
if (strcasecmp(c1->key, c2->key) ||
|
|
strcmp(c1->value, c2->value)) {
|
|
r = 0;
|
|
break;
|
|
}
|
|
c1 = c1->next;
|
|
c2 = c2->next;
|
|
}
|
|
if (r && (c1 || c2)) {
|
|
r = 0;
|
|
}
|
|
config_free_lines(c1);
|
|
config_free_lines(c2);
|
|
return r;
|
|
}
|
|
|
|
/** Copy storage held by <b>old</b> into a new or_options_t and return it. */
|
|
static or_options_t *
|
|
options_dup(config_format_t *fmt, or_options_t *old)
|
|
{
|
|
or_options_t *newopts;
|
|
int i;
|
|
config_line_t *line;
|
|
|
|
newopts = config_alloc(fmt);
|
|
for (i=0; fmt->vars[i].name; ++i) {
|
|
if (fmt->vars[i].type == CONFIG_TYPE_LINELIST_S)
|
|
continue;
|
|
if (fmt->vars[i].type == CONFIG_TYPE_OBSOLETE)
|
|
continue;
|
|
line = get_assigned_option(fmt, old, fmt->vars[i].name);
|
|
if (line) {
|
|
if (config_assign(fmt, newopts, line, 0) < 0) {
|
|
log_fn(LOG_WARN,"Bug: config_get_assigned_option() generated "
|
|
"something we couldn't config_assign().");
|
|
tor_assert(0);
|
|
}
|
|
}
|
|
config_free_lines(line);
|
|
}
|
|
return newopts;
|
|
}
|
|
|
|
/** Return a new empty or_options_t. Used for testing. */
|
|
or_options_t *
|
|
options_new(void)
|
|
{
|
|
return config_alloc(&options_format);
|
|
}
|
|
|
|
/** Set <b>options</b> to hold reasonable defaults for most options.
|
|
* Each option defaults to zero. */
|
|
void
|
|
options_init(or_options_t *options)
|
|
{
|
|
config_init(&options_format, options);
|
|
}
|
|
|
|
/* DOCDOC */
|
|
static void
|
|
config_init(config_format_t *fmt, void *options)
|
|
{
|
|
int i;
|
|
config_var_t *var;
|
|
CHECK(fmt, options);
|
|
|
|
for (i=0; fmt->vars[i].name; ++i) {
|
|
var = &fmt->vars[i];
|
|
if (!var->initvalue)
|
|
continue; /* defaults to NULL or 0 */
|
|
option_reset(fmt, options, var);
|
|
}
|
|
}
|
|
|
|
/* DOCDOC */
|
|
static char *
|
|
config_dump(config_format_t *fmt, void *options, int minimal)
|
|
{
|
|
smartlist_t *elements;
|
|
or_options_t *defaults;
|
|
config_line_t *line;
|
|
char *result;
|
|
int i;
|
|
const char *desc;
|
|
|
|
defaults = config_alloc(fmt);
|
|
config_init(fmt, defaults);
|
|
fmt->validate_fn(options);
|
|
|
|
elements = smartlist_create();
|
|
for (i=0; fmt->vars[i].name; ++i) {
|
|
if (fmt->vars[i].type == CONFIG_TYPE_OBSOLETE ||
|
|
fmt->vars[i].type == CONFIG_TYPE_LINELIST_S)
|
|
continue;
|
|
/* Don't save 'hidden' control variables. */
|
|
if (!strcmpstart(fmt->vars[i].name, "__"))
|
|
continue;
|
|
if (minimal && option_is_same(fmt, options, defaults, fmt->vars[i].name))
|
|
continue;
|
|
|
|
desc = config_find_description(fmt, fmt->vars[i].name);
|
|
if (desc) {
|
|
size_t len = strlen(desc)+8;
|
|
char *tmp = tor_malloc(len);
|
|
tor_snprintf(tmp, len, "# %s\n",desc);
|
|
smartlist_add(elements, tmp);
|
|
}
|
|
|
|
line = get_assigned_option(fmt, options, fmt->vars[i].name);
|
|
for (; line; line = line->next) {
|
|
size_t len = strlen(line->key) + strlen(line->value) + 3;
|
|
char *tmp;
|
|
tmp = tor_malloc(len);
|
|
if (tor_snprintf(tmp, len, "%s %s\n", line->key, line->value)<0) {
|
|
log_fn(LOG_ERR, "Internal error writing log option");
|
|
tor_assert(0);
|
|
}
|
|
smartlist_add(elements, tmp);
|
|
}
|
|
config_free_lines(line);
|
|
}
|
|
|
|
result = smartlist_join_strings(elements, "", 0, NULL);
|
|
SMARTLIST_FOREACH(elements, char *, cp, tor_free(cp));
|
|
smartlist_free(elements);
|
|
return result;
|
|
}
|
|
|
|
/** Return a string containing a possible configuration file that would give
|
|
* the configuration in <b>options</b>. If <b>minimal</b> is true, do not
|
|
* include options that are the same as Tor's defaults.
|
|
*/
|
|
char *
|
|
options_dump(or_options_t *options, int minimal)
|
|
{
|
|
return config_dump(&options_format, options, minimal);
|
|
}
|
|
|
|
/* Return 0 if every element of sl is a string holding a decimal
|
|
* representation of a port number, or if sl is NULL.
|
|
* Otherwise return -1. */
|
|
static int
|
|
validate_ports_csv(smartlist_t *sl, const char *name)
|
|
{
|
|
int i;
|
|
int result = 0;
|
|
tor_assert(name);
|
|
|
|
if (!sl)
|
|
return 0;
|
|
|
|
SMARTLIST_FOREACH(sl, const char *, cp,
|
|
{
|
|
i = atoi(cp);
|
|
if (i < 1 || i > 65535) {
|
|
log(LOG_WARN, "Port '%s' out of range in %s", cp, name);
|
|
result=-1;
|
|
}
|
|
});
|
|
return result;
|
|
}
|
|
|
|
/** DOCDOC */
|
|
static void
|
|
parse_reachable_addresses(void)
|
|
{
|
|
or_options_t *options = get_options();
|
|
|
|
addr_policy_free(reachable_addr_policy);
|
|
reachable_addr_policy = NULL;
|
|
|
|
if (config_parse_addr_policy(options->ReachableAddresses,
|
|
&reachable_addr_policy,
|
|
ADDR_POLICY_ACCEPT)) {
|
|
log_fn(LOG_WARN, "Error in ReachableAddresses entry; ignoring.");
|
|
return;
|
|
}
|
|
}
|
|
|
|
/** Return true iff the firewall options might block any address:port
|
|
* combination
|
|
*/
|
|
int
|
|
firewall_is_fascist(void)
|
|
{
|
|
return reachable_addr_policy ? 1 : 0;
|
|
}
|
|
|
|
/** Return true iff we are configured to think that the local fascist
|
|
* firewall (if any) will allow a connection to <b>addr</b>:<b>port</b> */
|
|
int
|
|
fascist_firewall_allows_address(uint32_t addr, uint16_t port)
|
|
{
|
|
addr_policy_result_t p = router_compare_addr_to_addr_policy(
|
|
addr, port, reachable_addr_policy);
|
|
|
|
switch (p) {
|
|
case ADDR_POLICY_PROBABLY_ACCEPTED:
|
|
case ADDR_POLICY_ACCEPTED:
|
|
return 1;
|
|
case ADDR_POLICY_PROBABLY_REJECTED:
|
|
case ADDR_POLICY_REJECTED:
|
|
return 0;
|
|
default:
|
|
log_fn(LOG_WARN, "Unexpected result: %d", (int)p);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/** Return 0 if every setting in <b>options</b> is reasonable. Else
|
|
* warn and return -1. Should have no side effects, except for
|
|
* normalizing the contents of <b>options</b>. */
|
|
static int
|
|
options_validate(or_options_t *options)
|
|
{
|
|
int result = 0;
|
|
config_line_t *cl;
|
|
addr_policy_t *addr_policy=NULL;
|
|
|
|
if (options->ORPort < 0 || options->ORPort > 65535) {
|
|
log(LOG_WARN, "ORPort option out of bounds.");
|
|
result = -1;
|
|
}
|
|
|
|
if (options->ORPort == 0 && options->ORBindAddress != NULL) {
|
|
log(LOG_WARN, "ORPort must be defined if ORBindAddress is defined.");
|
|
result = -1;
|
|
}
|
|
if (options->DirPort == 0 && options->DirBindAddress != NULL) {
|
|
log(LOG_WARN, "DirPort must be defined if DirBindAddress is defined.");
|
|
result = -1;
|
|
}
|
|
if (options->SocksPort == 0 && options->SocksBindAddress != NULL) {
|
|
log(LOG_WARN, "SocksPort must be defined if SocksBindAddress is defined.");
|
|
result = -1;
|
|
}
|
|
|
|
if (validate_data_directory(options)<0) {
|
|
log(LOG_WARN, "Invalid DataDirectory");
|
|
result = -1;
|
|
}
|
|
|
|
if (options->Nickname == NULL) {
|
|
if (server_mode(options)) {
|
|
if (!(options->Nickname = get_default_nickname()))
|
|
return -1;
|
|
log_fn(LOG_NOTICE, "Choosing default nickname '%s'", options->Nickname);
|
|
}
|
|
} else {
|
|
if (!is_legal_nickname(options->Nickname)) {
|
|
log_fn(LOG_WARN, "Nickname '%s' is wrong length or contains illegal characters.", options->Nickname);
|
|
result = -1;
|
|
}
|
|
}
|
|
|
|
if (server_mode(options) && !options->ContactInfo)
|
|
log_fn(LOG_NOTICE,"Your ContactInfo config option is not set. Please consider setting it, so we can contact you if your server is misconfigured or something else goes wrong.");
|
|
|
|
if (normalize_log_options(options))
|
|
return -1;
|
|
|
|
/* Special case if no options are given. */
|
|
if (!options->Logs) {
|
|
config_line_append(&options->Logs, "Log", "notice stdout");
|
|
}
|
|
|
|
if (options_init_logs(options, 1)<0) /* Validate the log(s) */
|
|
return -1;
|
|
|
|
if (server_mode(options)) {
|
|
/* confirm that our address isn't broken, so we can complain now */
|
|
uint32_t tmp;
|
|
if (resolve_my_address(options, &tmp, NULL) < 0)
|
|
result = -1;
|
|
}
|
|
|
|
if (options->SocksPort < 0 || options->SocksPort > 65535) {
|
|
log(LOG_WARN, "SocksPort option out of bounds.");
|
|
result = -1;
|
|
}
|
|
|
|
if (options->SocksPort == 0 && options->ORPort == 0) {
|
|
log(LOG_WARN, "SocksPort and ORPort are both undefined? Quitting.");
|
|
result = -1;
|
|
}
|
|
|
|
if (options->ControlPort < 0 || options->ControlPort > 65535) {
|
|
log(LOG_WARN, "ControlPort option out of bounds.");
|
|
result = -1;
|
|
}
|
|
|
|
if (options->DirPort < 0 || options->DirPort > 65535) {
|
|
log(LOG_WARN, "DirPort option out of bounds.");
|
|
result = -1;
|
|
}
|
|
|
|
if (options->StrictExitNodes &&
|
|
(!options->ExitNodes || !strlen(options->ExitNodes))) {
|
|
log(LOG_WARN, "StrictExitNodes set, but no ExitNodes listed.");
|
|
}
|
|
|
|
if (options->StrictEntryNodes &&
|
|
(!options->EntryNodes || !strlen(options->EntryNodes))) {
|
|
log(LOG_WARN, "StrictEntryNodes set, but no EntryNodes listed.");
|
|
}
|
|
|
|
if (options->AuthoritativeDir) {
|
|
if (!options->RecommendedVersions) {
|
|
log(LOG_WARN, "Directory servers must configure RecommendedVersions.");
|
|
result = -1;
|
|
}
|
|
if (!options->RecommendedClientVersions)
|
|
options->RecommendedClientVersions =
|
|
config_lines_dup(options->RecommendedVersions);
|
|
if (!options->RecommendedServerVersions)
|
|
options->RecommendedServerVersions =
|
|
config_lines_dup(options->RecommendedVersions);
|
|
}
|
|
|
|
if (options->AuthoritativeDir && !options->DirPort) {
|
|
log(LOG_WARN, "Running as authoritative directory, but no DirPort set.");
|
|
result = -1;
|
|
}
|
|
|
|
if (options->AuthoritativeDir && !options->ORPort) {
|
|
log(LOG_WARN, "Running as authoritative directory, but no ORPort set.");
|
|
result = -1;
|
|
}
|
|
|
|
if (options->AuthoritativeDir && options->ClientOnly) {
|
|
log(LOG_WARN, "Running as authoritative directory, but ClientOnly also set.");
|
|
result = -1;
|
|
}
|
|
|
|
if (options->AuthoritativeDir && options->NoPublish) {
|
|
log(LOG_WARN, "You cannot set both AuthoritativeDir and NoPublish.");
|
|
result = -1;
|
|
}
|
|
|
|
if (options->ConnLimit <= 0) {
|
|
log(LOG_WARN, "ConnLimit must be greater than 0, but was set to %d",
|
|
options->ConnLimit);
|
|
result = -1;
|
|
}
|
|
|
|
if (options->_AccountingMaxKB) {
|
|
log(LOG_WARN, "AccountingMaxKB is deprecated. Say 'AccountingMax %d KB' instead.", options->_AccountingMaxKB);
|
|
options->AccountingMax = U64_LITERAL(1024)*options->_AccountingMaxKB;
|
|
options->_AccountingMaxKB = 0;
|
|
}
|
|
|
|
if (validate_ports_csv(options->FirewallPorts,
|
|
"FirewallPorts") < 0)
|
|
result = -1;
|
|
|
|
if (validate_ports_csv(options->LongLivedPorts,
|
|
"LongLivedPorts") < 0)
|
|
result = -1;
|
|
|
|
if (options->FascistFirewall) {
|
|
smartlist_t *instead = smartlist_create();
|
|
config_line_t *new_line = tor_malloc_zero(sizeof(config_line_t));
|
|
new_line->key = tor_strdup("ReachableAddresses");
|
|
/* If we're configured with the old format, we need to prepend some
|
|
* open ports. */
|
|
if (!smartlist_len(options->FirewallPorts)) {
|
|
smartlist_add(options->FirewallPorts, tor_strdup("80"));
|
|
smartlist_add(options->FirewallPorts, tor_strdup("443"));
|
|
}
|
|
SMARTLIST_FOREACH(options->FirewallPorts, const char *, portno,
|
|
{
|
|
int p = atoi(portno);
|
|
char *s;
|
|
if (p<0) continue;
|
|
s = tor_malloc(16);
|
|
tor_snprintf(s, 16, "*:%d", p);
|
|
smartlist_add(instead, s);
|
|
});
|
|
new_line->value = smartlist_join_strings(instead,",",0,NULL);
|
|
/* These have been deprecated since 0.1.1.5-alpha-cvs */
|
|
log_fn(LOG_WARN, "FascistFirewall and FirewallPorts are deprecated. Instead, use \"ReachableAddresses %s\"", new_line->value);
|
|
new_line->next = options->ReachableAddresses;
|
|
options->ReachableAddresses = new_line;
|
|
SMARTLIST_FOREACH(instead, char *, cp, tor_free(cp));
|
|
smartlist_free(instead);
|
|
}
|
|
|
|
if (options->FascistFirewall || options->ReachableAddresses) {
|
|
/* We need to end with a reject *:*, not an implicit accept *:* */
|
|
config_line_t **linep = &options->ReachableAddresses;
|
|
while (*linep) {
|
|
linep = &((*linep)->next);
|
|
}
|
|
*linep = tor_malloc_zero(sizeof(config_line_t));
|
|
(*linep)->key = tor_strdup("ReachableAddresses");
|
|
(*linep)->value = tor_strdup("reject *:*");
|
|
}
|
|
|
|
options->_AllowUnverified = 0;
|
|
if (options->AllowUnverifiedNodes) {
|
|
SMARTLIST_FOREACH(options->AllowUnverifiedNodes, const char *, cp, {
|
|
if (!strcasecmp(cp, "entry"))
|
|
options->_AllowUnverified |= ALLOW_UNVERIFIED_ENTRY;
|
|
else if (!strcasecmp(cp, "exit"))
|
|
options->_AllowUnverified |= ALLOW_UNVERIFIED_EXIT;
|
|
else if (!strcasecmp(cp, "middle"))
|
|
options->_AllowUnverified |= ALLOW_UNVERIFIED_MIDDLE;
|
|
else if (!strcasecmp(cp, "introduction"))
|
|
options->_AllowUnverified |= ALLOW_UNVERIFIED_INTRODUCTION;
|
|
else if (!strcasecmp(cp, "rendezvous"))
|
|
options->_AllowUnverified |= ALLOW_UNVERIFIED_RENDEZVOUS;
|
|
else {
|
|
log(LOG_WARN, "Unrecognized value '%s' in AllowUnverifiedNodes",
|
|
cp);
|
|
result = -1;
|
|
}
|
|
});
|
|
}
|
|
|
|
if (options->SocksPort >= 1 &&
|
|
(options->PathlenCoinWeight < 0.0 || options->PathlenCoinWeight >= 1.0)) {
|
|
log(LOG_WARN, "PathlenCoinWeight option must be >=0.0 and <1.0.");
|
|
result = -1;
|
|
}
|
|
|
|
#define MIN_DIR_FETCH_PERIOD 600
|
|
#define MIN_REND_POST_PERIOD 300
|
|
#define MIN_STATUS_FETCH_PERIOD 60
|
|
|
|
#define MAX_DIR_PERIOD (MIN_ONION_KEY_LIFETIME/2)
|
|
#define MAX_CACHE_DIR_FETCH_PERIOD 3600
|
|
#define MAX_CACHE_STATUS_FETCH_PERIOD 900
|
|
|
|
if (options->DirFetchPeriod &&
|
|
options->DirFetchPeriod < MIN_DIR_FETCH_PERIOD) {
|
|
log(LOG_WARN, "DirFetchPeriod option must be at least %d seconds. Clipping.", MIN_DIR_FETCH_PERIOD);
|
|
options->DirFetchPeriod = MIN_DIR_FETCH_PERIOD;
|
|
}
|
|
if (options->StatusFetchPeriod &&
|
|
options->StatusFetchPeriod < MIN_STATUS_FETCH_PERIOD) {
|
|
log(LOG_WARN, "StatusFetchPeriod option must be at least %d seconds. Clipping.", MIN_STATUS_FETCH_PERIOD);
|
|
options->StatusFetchPeriod = MIN_STATUS_FETCH_PERIOD;
|
|
}
|
|
if (options->RendPostPeriod < MIN_REND_POST_PERIOD) {
|
|
log(LOG_WARN,"RendPostPeriod option must be at least %d seconds. Clipping.",
|
|
MIN_REND_POST_PERIOD);
|
|
options->RendPostPeriod = MIN_REND_POST_PERIOD;
|
|
}
|
|
|
|
if (options->DirPort && ! options->AuthoritativeDir) {
|
|
if (options->DirFetchPeriod > MAX_CACHE_DIR_FETCH_PERIOD) {
|
|
log(LOG_WARN, "Caching directory servers must have DirFetchPeriod less than %d seconds. Clipping.", MAX_CACHE_DIR_FETCH_PERIOD);
|
|
options->DirFetchPeriod = MAX_CACHE_DIR_FETCH_PERIOD;
|
|
}
|
|
if (options->StatusFetchPeriod > MAX_CACHE_STATUS_FETCH_PERIOD) {
|
|
log(LOG_WARN, "Caching directory servers must have StatusFetchPeriod less than %d seconds. Clipping.", MAX_CACHE_STATUS_FETCH_PERIOD);
|
|
options->StatusFetchPeriod = MAX_CACHE_STATUS_FETCH_PERIOD;
|
|
}
|
|
}
|
|
|
|
if (options->DirFetchPeriod > MAX_DIR_PERIOD) {
|
|
log(LOG_WARN, "DirFetchPeriod is too large; clipping to %ds.", MAX_DIR_PERIOD);
|
|
options->DirFetchPeriod = MAX_DIR_PERIOD;
|
|
}
|
|
if (options->StatusFetchPeriod > MAX_DIR_PERIOD) {
|
|
log(LOG_WARN, "StatusFetchPeriod is too large; clipping to %ds.", MAX_DIR_PERIOD);
|
|
options->StatusFetchPeriod = MAX_DIR_PERIOD;
|
|
}
|
|
if (options->RendPostPeriod > MAX_DIR_PERIOD) {
|
|
log(LOG_WARN, "RendPostPeriod is too large; clipping to %ds.", MAX_DIR_PERIOD);
|
|
options->RendPostPeriod = MAX_DIR_PERIOD;
|
|
}
|
|
|
|
if (options->KeepalivePeriod < 1) {
|
|
log(LOG_WARN,"KeepalivePeriod option must be positive.");
|
|
result = -1;
|
|
}
|
|
|
|
if (options->BandwidthRate > INT_MAX) {
|
|
log(LOG_WARN,"BandwidthRate must be less than %d",INT_MAX);
|
|
result = -1;
|
|
}
|
|
if (options->BandwidthBurst > INT_MAX) {
|
|
log(LOG_WARN,"BandwidthBurst must be less than %d",INT_MAX);
|
|
result = -1;
|
|
}
|
|
if (server_mode(options) &&
|
|
options->BandwidthRate < ROUTER_REQUIRED_MIN_BANDWIDTH*2) {
|
|
log(LOG_WARN,"BandwidthRate is set to %d bytes/second. For servers, it must be at least %d.", (int)options->BandwidthRate, ROUTER_REQUIRED_MIN_BANDWIDTH*2);
|
|
result = -1;
|
|
}
|
|
if (options->BandwidthRate > options->BandwidthBurst) {
|
|
log(LOG_WARN,"BandwidthBurst must be at least equal to BandwidthRate.");
|
|
result = -1;
|
|
}
|
|
|
|
#if 0
|
|
if (options->_MonthlyAccountingStart) {
|
|
if (options->AccountingStart) {
|
|
log(LOG_WARN,"Can't specify AccountingStart and MonthlyAccountingStart");
|
|
result = -1;
|
|
} else {
|
|
options->AccountingStart = tor_malloc(32);
|
|
if (tor_snprintf(options->AccountingStart, 32, "month %d 0:00",
|
|
options->_MonthlyAccountingStart)<0) {
|
|
log_fn(LOG_WARN,"Error translating MonthlyAccountingStart");
|
|
result = -1;
|
|
} else {
|
|
log_fn(LOG_WARN,"MonthlyAccountingStart is deprecated. Use 'AccountingStart %s' instead.", options->AccountingStart);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (accounting_parse_options(options, 1)<0) {
|
|
result = -1;
|
|
}
|
|
|
|
if (options->HttpProxy) { /* parse it now */
|
|
if (parse_addr_port(options->HttpProxy, NULL,
|
|
&options->HttpProxyAddr, &options->HttpProxyPort) < 0) {
|
|
log(LOG_WARN,"HttpProxy failed to parse or resolve. Please fix.");
|
|
result = -1;
|
|
}
|
|
if (options->HttpProxyPort == 0) { /* give it a default */
|
|
options->HttpProxyPort = 80;
|
|
}
|
|
}
|
|
|
|
if (options->HttpProxyAuthenticator) {
|
|
if (strlen(options->HttpProxyAuthenticator) >= 48) {
|
|
log(LOG_WARN, "HttpProxyAuthenticator is too long (>= 48 chars).");
|
|
result = -1;
|
|
}
|
|
}
|
|
|
|
if (options->HttpsProxy) { /* parse it now */
|
|
if (parse_addr_port(options->HttpsProxy, NULL,
|
|
&options->HttpsProxyAddr, &options->HttpsProxyPort) < 0) {
|
|
log(LOG_WARN,"HttpsProxy failed to parse or resolve. Please fix.");
|
|
result = -1;
|
|
}
|
|
if (options->HttpsProxyPort == 0) { /* give it a default */
|
|
options->HttpsProxyPort = 443;
|
|
}
|
|
}
|
|
|
|
if (options->HttpsProxyAuthenticator) {
|
|
if (strlen(options->HttpsProxyAuthenticator) >= 48) {
|
|
log(LOG_WARN, "HttpsProxyAuthenticator is too long (>= 48 chars).");
|
|
result = -1;
|
|
}
|
|
}
|
|
|
|
if (options->HashedControlPassword) {
|
|
if (decode_hashed_password(NULL, options->HashedControlPassword)<0) {
|
|
log_fn(LOG_WARN,"Bad HashedControlPassword: wrong length or bad encoding");
|
|
result = -1;
|
|
}
|
|
}
|
|
if (options->HashedControlPassword && options->CookieAuthentication) {
|
|
log_fn(LOG_WARN,"Cannot enable both HashedControlPassword and CookieAuthentication");
|
|
result = -1;
|
|
}
|
|
|
|
if (options->UseHelperNodes && ! options->NumHelperNodes) {
|
|
log_fn(LOG_WARN, "Cannot enable UseHelperNodes with NumHelperNodes set to 0");
|
|
result = -1;
|
|
}
|
|
|
|
if (check_nickname_list(options->ExitNodes, "ExitNodes"))
|
|
result = -1;
|
|
if (check_nickname_list(options->EntryNodes, "EntryNodes"))
|
|
result = -1;
|
|
if (check_nickname_list(options->ExcludeNodes, "ExcludeNodes"))
|
|
result = -1;
|
|
if (check_nickname_list(options->RendNodes, "RendNodes"))
|
|
result = -1;
|
|
if (check_nickname_list(options->RendNodes, "RendExcludeNodes"))
|
|
result = -1;
|
|
if (check_nickname_list(options->MyFamily, "MyFamily"))
|
|
result = -1;
|
|
for (cl = options->NodeFamilies; cl; cl = cl->next) {
|
|
if (check_nickname_list(cl->value, "NodeFamily"))
|
|
result = -1;
|
|
}
|
|
|
|
if (config_parse_addr_policy(options->ExitPolicy, &addr_policy, -1)) {
|
|
log_fn(LOG_WARN, "Error in Exit Policy entry.");
|
|
result = -1;
|
|
}
|
|
options_append_default_exit_policy(&addr_policy);
|
|
if (server_mode(options)) {
|
|
exit_policy_implicitly_allows_local_networks(addr_policy, 1);
|
|
}
|
|
/* The rest of these calls *append* to addr_policy. So don't actually
|
|
* use the results for anything other than checking if they parse! */
|
|
if (config_parse_addr_policy(options->DirPolicy, &addr_policy, -1)) {
|
|
log_fn(LOG_WARN, "Error in DirPolicy entry.");
|
|
result = -1;
|
|
}
|
|
if (config_parse_addr_policy(options->SocksPolicy, &addr_policy, -1)) {
|
|
log_fn(LOG_WARN, "Error in SocksPolicy entry.");
|
|
result = -1;
|
|
}
|
|
if (config_parse_addr_policy(options->ReachableAddresses, &addr_policy,
|
|
ADDR_POLICY_ACCEPT)) {
|
|
log_fn(LOG_WARN, "Error in ReachableAddresses entry.");
|
|
result = -1;
|
|
}
|
|
addr_policy_free(addr_policy);
|
|
|
|
for (cl = options->RedirectExit; cl; cl = cl->next) {
|
|
if (parse_redirect_line(NULL, cl)<0)
|
|
result = -1;
|
|
}
|
|
|
|
if (!options->DirServers) {
|
|
add_default_trusted_dirservers(options);
|
|
} else {
|
|
for (cl = options->DirServers; cl; cl = cl->next) {
|
|
if (parse_dir_server_line(cl->value, 1)<0)
|
|
result = -1;
|
|
}
|
|
}
|
|
|
|
if (rend_config_services(options, 1) < 0)
|
|
result = -1;
|
|
|
|
return result;
|
|
}
|
|
|
|
/** Helper: return true iff s1 and s2 are both NULL, or both non-NULL
|
|
* equal strings. */
|
|
static int
|
|
opt_streq(const char *s1, const char *s2)
|
|
{
|
|
if (!s1 && !s2)
|
|
return 1;
|
|
else if (s1 && s2 && !strcmp(s1,s2))
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/** Check if any of the previous options have changed but aren't allowed to. */
|
|
static int
|
|
options_transition_allowed(or_options_t *old, or_options_t *new_val)
|
|
{
|
|
if (!old)
|
|
return 0;
|
|
|
|
if (!opt_streq(old->PidFile, new_val->PidFile)) {
|
|
log_fn(LOG_WARN,"PidFile is not allowed to change. Failing.");
|
|
return -1;
|
|
}
|
|
|
|
if (old->RunAsDaemon != new_val->RunAsDaemon) {
|
|
log_fn(LOG_WARN,"While Tor is running, changing RunAsDaemon is not allowed. Failing.");
|
|
return -1;
|
|
}
|
|
|
|
if (strcmp(old->DataDirectory,new_val->DataDirectory)!=0) {
|
|
log_fn(LOG_WARN,"While Tor is running, changing DataDirectory (\"%s\"->\"%s\") is not allowed. Failing.", old->DataDirectory, new_val->DataDirectory);
|
|
return -1;
|
|
}
|
|
|
|
if (!opt_streq(old->User, new_val->User)) {
|
|
log_fn(LOG_WARN,"While Tor is running, changing User is not allowed. Failing.");
|
|
return -1;
|
|
}
|
|
|
|
if (!opt_streq(old->Group, new_val->Group)) {
|
|
log_fn(LOG_WARN,"While Tor is running, changing Group is not allowed. Failing.");
|
|
return -1;
|
|
}
|
|
|
|
if (old->HardwareAccel != new_val->HardwareAccel) {
|
|
log_fn(LOG_WARN,"While Tor is running, changing HardwareAccel is not allowed. Failing.");
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/** Return true iff a and b contain identical keys and values in identical
|
|
* order. */
|
|
static int
|
|
config_lines_eq(config_line_t *a, config_line_t *b)
|
|
{
|
|
while (a && b) {
|
|
if (strcasecmp(a->key, b->key) || strcmp(a->value, b->value))
|
|
return 0;
|
|
a = a->next;
|
|
b = b->next;
|
|
}
|
|
if (a || b)
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
/** Return 1 if any change from <b>old_options</b> to <b>new_options</b>
|
|
* will require us to rotate the cpu and dns workers; else return 0. */
|
|
static int
|
|
options_transition_affects_workers(or_options_t *old_options,
|
|
or_options_t *new_options)
|
|
{
|
|
if (!opt_streq(old_options->DataDirectory, new_options->DataDirectory) ||
|
|
old_options->NumCpus != new_options->NumCpus ||
|
|
old_options->ORPort != new_options->ORPort ||
|
|
old_options->SafeLogging != new_options->SafeLogging ||
|
|
!config_lines_eq(old_options->Logs, new_options->Logs))
|
|
return 1;
|
|
|
|
/* Check whether log options match. */
|
|
|
|
/* Nothing that changed matters. */
|
|
return 0;
|
|
}
|
|
|
|
/** Return 1 if any change from <b>old_options</b> to <b>new_options</b>
|
|
* will require us to generate a new descriptor; else return 0. */
|
|
static int
|
|
options_transition_affects_descriptor(or_options_t *old_options,
|
|
or_options_t *new_options)
|
|
{
|
|
if (!opt_streq(old_options->DataDirectory, new_options->DataDirectory) ||
|
|
!opt_streq(old_options->Nickname,new_options->Nickname) ||
|
|
!opt_streq(old_options->Address,new_options->Address) ||
|
|
!config_lines_eq(old_options->ExitPolicy,new_options->ExitPolicy) ||
|
|
old_options->ORPort != new_options->ORPort ||
|
|
old_options->DirPort != new_options->DirPort ||
|
|
old_options->ClientOnly != new_options->ClientOnly ||
|
|
old_options->NoPublish != new_options->NoPublish ||
|
|
old_options->BandwidthRate != new_options->BandwidthRate ||
|
|
old_options->BandwidthBurst != new_options->BandwidthBurst ||
|
|
!opt_streq(old_options->ContactInfo, new_options->ContactInfo) ||
|
|
!opt_streq(old_options->MyFamily, new_options->MyFamily) ||
|
|
!opt_streq(old_options->AccountingStart, new_options->AccountingStart) ||
|
|
old_options->AccountingMax != new_options->AccountingMax)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef MS_WINDOWS
|
|
/** Return the directory on windows where we expect to find our application
|
|
* data. */
|
|
static char *
|
|
get_windows_conf_root(void)
|
|
{
|
|
static int is_set = 0;
|
|
static char path[MAX_PATH+1];
|
|
|
|
LPITEMIDLIST idl;
|
|
IMalloc *m;
|
|
HRESULT result;
|
|
|
|
if (is_set)
|
|
return path;
|
|
|
|
/* Find X:\documents and settings\username\application data\ .
|
|
* We would use SHGetSpecialFolder path, but that wasn't added until IE4.
|
|
*/
|
|
if (!SUCCEEDED(SHGetSpecialFolderLocation(NULL, CSIDL_APPDATA,
|
|
&idl))) {
|
|
GetCurrentDirectory(MAX_PATH, path);
|
|
is_set = 1;
|
|
log_fn(LOG_WARN, "I couldn't find your application data folder: are you running an ancient version of Windows 95? Defaulting to \"%s\"", path);
|
|
return path;
|
|
}
|
|
/* Convert the path from an "ID List" (whatever that is!) to a path. */
|
|
result = SHGetPathFromIDList(idl, path);
|
|
/* Now we need to free the */
|
|
SHGetMalloc(&m);
|
|
if (m) {
|
|
m->lpVtbl->Free(m, idl);
|
|
m->lpVtbl->Release(m);
|
|
}
|
|
if (!SUCCEEDED(result)) {
|
|
return NULL;
|
|
}
|
|
strlcat(path,"\\tor",MAX_PATH);
|
|
is_set = 1;
|
|
return path;
|
|
}
|
|
#endif
|
|
|
|
/** Return the default location for our torrc file. */
|
|
static const char *
|
|
get_default_conf_file(void)
|
|
{
|
|
#ifdef MS_WINDOWS
|
|
static char path[MAX_PATH+1];
|
|
strlcpy(path, get_windows_conf_root(), MAX_PATH);
|
|
strlcat(path,"\\torrc",MAX_PATH);
|
|
return path;
|
|
#else
|
|
return (CONFDIR "/torrc");
|
|
#endif
|
|
}
|
|
|
|
/** Verify whether lst is a string containing valid-looking space-separated
|
|
* nicknames, or NULL. Return 0 on success. Warn and return -1 on failure.
|
|
*/
|
|
static int
|
|
check_nickname_list(const char *lst, const char *name)
|
|
{
|
|
int r = 0;
|
|
smartlist_t *sl;
|
|
|
|
if (!lst)
|
|
return 0;
|
|
sl = smartlist_create();
|
|
smartlist_split_string(sl, lst, ",", SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, 0);
|
|
SMARTLIST_FOREACH(sl, const char *, s,
|
|
{
|
|
if (!is_legal_nickname_or_hexdigest(s)) {
|
|
log_fn(LOG_WARN, "Invalid nickname '%s' in %s line", s, name);
|
|
r = -1;
|
|
}
|
|
});
|
|
SMARTLIST_FOREACH(sl, char *, s, tor_free(s));
|
|
smartlist_free(sl);
|
|
return r;
|
|
}
|
|
|
|
/** Read a configuration file into <b>options</b>, finding the configuration
|
|
* file location based on the command line. After loading the options,
|
|
* validate them for consistency, then take actions based on them.
|
|
* Return 0 if success, -1 if failure. */
|
|
int
|
|
options_init_from_torrc(int argc, char **argv)
|
|
{
|
|
or_options_t *oldoptions, *newoptions;
|
|
config_line_t *cl;
|
|
char *cf=NULL, *fname=NULL;
|
|
int i, retval;
|
|
int using_default_torrc;
|
|
static char **backup_argv;
|
|
static int backup_argc;
|
|
|
|
if (argv) { /* first time we're called. save commandline args */
|
|
backup_argv = argv;
|
|
backup_argc = argc;
|
|
oldoptions = NULL;
|
|
} else { /* we're reloading. need to clean up old options first. */
|
|
argv = backup_argv;
|
|
argc = backup_argc;
|
|
oldoptions = get_options();
|
|
}
|
|
if (argc > 1 && (!strcmp(argv[1], "-h") || !strcmp(argv[1],"--help"))) {
|
|
print_usage();
|
|
exit(0);
|
|
}
|
|
|
|
if (argc > 1 && (!strcmp(argv[1],"--version"))) {
|
|
printf("Tor version %s.\n",VERSION);
|
|
if (argc > 2 && (!strcmp(argv[2],"--version"))) {
|
|
print_cvs_version();
|
|
}
|
|
exit(0);
|
|
}
|
|
|
|
newoptions = tor_malloc_zero(sizeof(or_options_t));
|
|
newoptions->_magic = OR_OPTIONS_MAGIC;
|
|
options_init(newoptions);
|
|
|
|
/* learn config file name, get config lines, assign them */
|
|
fname = NULL;
|
|
using_default_torrc = 1;
|
|
newoptions->command = CMD_RUN_TOR;
|
|
for (i = 1; i < argc; ++i) {
|
|
if (i < argc-1 && !strcmp(argv[i],"-f")) {
|
|
if (fname) {
|
|
log(LOG_WARN, "Duplicate -f options on command line.");
|
|
tor_free(fname);
|
|
}
|
|
fname = tor_strdup(argv[i+1]);
|
|
using_default_torrc = 0;
|
|
++i;
|
|
} else if (!strcmp(argv[i],"--list-fingerprint")) {
|
|
newoptions->command = CMD_LIST_FINGERPRINT;
|
|
} else if (!strcmp(argv[i],"--hash-password")) {
|
|
newoptions->command = CMD_HASH_PASSWORD;
|
|
newoptions->command_arg = tor_strdup( (i < argc-1) ? argv[i+1] : "");
|
|
++i;
|
|
} else if (!strcmp(argv[i],"--verify-config")) {
|
|
newoptions->command = CMD_VERIFY_CONFIG;
|
|
}
|
|
}
|
|
|
|
if (using_default_torrc) {
|
|
/* didn't find one, try CONFDIR */
|
|
const char *dflt = get_default_conf_file();
|
|
char *fn = NULL;
|
|
if (dflt && file_status(dflt) == FN_FILE) {
|
|
fname = tor_strdup(dflt);
|
|
} else {
|
|
#ifndef MS_WINDOWS
|
|
fn = expand_filename("~/.torrc");
|
|
if (fn && file_status(fn) == FN_FILE) {
|
|
fname = fn;
|
|
} else {
|
|
tor_free(fn);
|
|
fname = tor_strdup(dflt);
|
|
}
|
|
#else
|
|
fname = tor_strdup(dflt);
|
|
#endif
|
|
}
|
|
}
|
|
tor_assert(fname);
|
|
log(LOG_DEBUG, "Opening config file \"%s\"", fname);
|
|
|
|
if (file_status(fname) != FN_FILE ||
|
|
!(cf = read_file_to_str(fname,0))) {
|
|
if (using_default_torrc == 1) {
|
|
log(LOG_NOTICE, "Configuration file \"%s\" not present, "
|
|
"using reasonable defaults.", fname);
|
|
tor_free(fname); /* sets fname to NULL */
|
|
} else {
|
|
log(LOG_WARN, "Unable to open configuration file \"%s\".", fname);
|
|
tor_free(fname);
|
|
goto err;
|
|
}
|
|
} else { /* it opened successfully. use it. */
|
|
retval = config_get_lines(cf, &cl);
|
|
tor_free(cf);
|
|
if (retval < 0)
|
|
goto err;
|
|
retval = config_assign(&options_format, newoptions, cl, 0);
|
|
config_free_lines(cl);
|
|
if (retval < 0)
|
|
goto err;
|
|
}
|
|
|
|
/* Go through command-line variables too */
|
|
cl = config_get_commandlines(argc,argv);
|
|
retval = config_assign(&options_format, newoptions,cl,0);
|
|
config_free_lines(cl);
|
|
if (retval < 0)
|
|
goto err;
|
|
|
|
/* Validate newoptions */
|
|
if (options_validate(newoptions) < 0)
|
|
goto err;
|
|
|
|
if (options_transition_allowed(oldoptions, newoptions) < 0)
|
|
goto err;
|
|
|
|
set_options(newoptions); /* frees and replaces old options */
|
|
tor_free(torrc_fname);
|
|
torrc_fname = fname;
|
|
return 0;
|
|
err:
|
|
tor_free(fname);
|
|
config_free(&options_format, newoptions);
|
|
return -1;
|
|
}
|
|
|
|
/** Return the location for our configuration file.
|
|
*/
|
|
const char *
|
|
get_torrc_fname(void)
|
|
{
|
|
if (torrc_fname)
|
|
return torrc_fname;
|
|
else
|
|
return get_default_conf_file();
|
|
}
|
|
|
|
/** Adjust the address map mased on the MapAddress elements in the
|
|
* configuration <b>options</b>
|
|
*/
|
|
static void
|
|
config_register_addressmaps(or_options_t *options)
|
|
{
|
|
smartlist_t *elts;
|
|
config_line_t *opt;
|
|
char *from, *to;
|
|
|
|
addressmap_clear_configured();
|
|
elts = smartlist_create();
|
|
for (opt = options->AddressMap; opt; opt = opt->next) {
|
|
smartlist_split_string(elts, opt->value, NULL,
|
|
SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, 2);
|
|
if (smartlist_len(elts) >= 2) {
|
|
from = smartlist_get(elts,0);
|
|
to = smartlist_get(elts,1);
|
|
if (!is_plausible_address(from)) {
|
|
log_fn(LOG_WARN,"Skipping invalid argument '%s' to MapAddress",from);
|
|
} else if (!is_plausible_address(to)) {
|
|
log_fn(LOG_WARN,"Skipping invalid argument '%s' to MapAddress",to);
|
|
} else {
|
|
addressmap_register(from, tor_strdup(to), 0);
|
|
if (smartlist_len(elts)>2) {
|
|
log_fn(LOG_WARN,"Ignoring extra arguments to MapAddress.");
|
|
}
|
|
}
|
|
} else {
|
|
log_fn(LOG_WARN,"MapAddress '%s' has too few arguments. Ignoring.", opt->value);
|
|
}
|
|
SMARTLIST_FOREACH(elts, char*, cp, tor_free(cp));
|
|
smartlist_clear(elts);
|
|
}
|
|
smartlist_free(elts);
|
|
}
|
|
|
|
/** If <b>range</b> is of the form MIN-MAX, for MIN and MAX both
|
|
* recognized log severity levels, set *<b>min_out</b> to MIN and
|
|
* *<b>max_out</b> to MAX and return 0. Else, if <b>range</b> is of
|
|
* the form MIN, act as if MIN-err had been specified. Else, warn and
|
|
* return -1.
|
|
*/
|
|
static int
|
|
parse_log_severity_range(const char *range, int *min_out, int *max_out)
|
|
{
|
|
int levelMin, levelMax;
|
|
const char *cp;
|
|
cp = strchr(range, '-');
|
|
if (cp) {
|
|
if (cp == range) {
|
|
levelMin = LOG_DEBUG;
|
|
} else {
|
|
char *tmp_sev = tor_strndup(range, cp - range);
|
|
levelMin = parse_log_level(tmp_sev);
|
|
if (levelMin < 0) {
|
|
log_fn(LOG_WARN, "Unrecognized log severity '%s': must be one of "
|
|
"err|warn|notice|info|debug", tmp_sev);
|
|
tor_free(tmp_sev);
|
|
return -1;
|
|
}
|
|
tor_free(tmp_sev);
|
|
}
|
|
if (!*(cp+1)) {
|
|
levelMax = LOG_ERR;
|
|
} else {
|
|
levelMax = parse_log_level(cp+1);
|
|
if (levelMax < 0) {
|
|
log_fn(LOG_WARN, "Unrecognized log severity '%s': must be one of "
|
|
"err|warn|notice|info|debug", cp+1);
|
|
return -1;
|
|
}
|
|
}
|
|
} else {
|
|
levelMin = parse_log_level(range);
|
|
if (levelMin < 0) {
|
|
log_fn(LOG_WARN, "Unrecognized log severity '%s': must be one of "
|
|
"err|warn|notice|info|debug", range);
|
|
return -1;
|
|
}
|
|
levelMax = LOG_ERR;
|
|
}
|
|
|
|
*min_out = levelMin;
|
|
*max_out = levelMax;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/** Try to convert a pair of old-style logging options [LogLevel, and
|
|
* (LogFile/Syslog)] to a new-style option, and add the new option to
|
|
* options->Logs. */
|
|
static int
|
|
convert_log_option(or_options_t *options, config_line_t *level_opt,
|
|
config_line_t *file_opt, int isDaemon)
|
|
{
|
|
int levelMin = -1, levelMax = -1;
|
|
|
|
if (level_opt) {
|
|
if (parse_log_severity_range(level_opt->value, &levelMin, &levelMax))
|
|
return -1;
|
|
}
|
|
if (levelMin < 0 && levelMax < 0) {
|
|
levelMin = LOG_NOTICE;
|
|
levelMax = LOG_ERR;
|
|
} else if (levelMin < 0) {
|
|
levelMin = levelMax;
|
|
} else {
|
|
levelMax = LOG_ERR;
|
|
}
|
|
|
|
if (file_opt && !strcasecmp(file_opt->key, "LogFile")) {
|
|
if (add_single_log_option(options, levelMin, levelMax, "file", file_opt->value) < 0) {
|
|
log_fn(LOG_WARN, "Cannot write to LogFile \"%s\": %s.", file_opt->value,
|
|
strerror(errno));
|
|
return -1;
|
|
}
|
|
} else if (file_opt && !strcasecmp(file_opt->key, "SysLog")) {
|
|
if (add_single_log_option(options, levelMin, levelMax, "syslog", NULL) < 0)
|
|
return -1;
|
|
} else if (!isDaemon) {
|
|
add_single_log_option(options, levelMin, levelMax, "stdout", NULL);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Initialize the logs based on the configuration file.
|
|
*/
|
|
int
|
|
options_init_logs(or_options_t *options, int validate_only)
|
|
{
|
|
config_line_t *opt;
|
|
int ok;
|
|
smartlist_t *elts;
|
|
|
|
ok = 1;
|
|
elts = smartlist_create();
|
|
for (opt = options->Logs; opt; opt = opt->next) {
|
|
int levelMin=LOG_DEBUG, levelMax=LOG_ERR;
|
|
smartlist_split_string(elts, opt->value, NULL,
|
|
SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, 3);
|
|
if (smartlist_len(elts) == 0) {
|
|
log_fn(LOG_WARN, "Bad syntax on Log option 'Log %s'", opt->value);
|
|
ok = 0; goto cleanup;
|
|
}
|
|
if (parse_log_severity_range(smartlist_get(elts,0), &levelMin, &levelMax)) {
|
|
ok = 0; goto cleanup;
|
|
}
|
|
if (smartlist_len(elts) < 2) { /* only loglevels were provided */
|
|
if (!validate_only)
|
|
add_stream_log(levelMin, levelMax, "<stdout>", stdout);
|
|
goto cleanup;
|
|
}
|
|
if (!strcasecmp(smartlist_get(elts,1), "file")) {
|
|
if (smartlist_len(elts) != 3) {
|
|
log_fn(LOG_WARN, "Bad syntax on Log option 'Log %s'", opt->value);
|
|
ok = 0; goto cleanup;
|
|
}
|
|
if (!validate_only)
|
|
add_file_log(levelMin, levelMax, smartlist_get(elts, 2));
|
|
goto cleanup;
|
|
}
|
|
if (smartlist_len(elts) != 2) {
|
|
log_fn(LOG_WARN, "Bad syntax on Log option 'Log %s'", opt->value);
|
|
ok = 0; goto cleanup;
|
|
}
|
|
if (!strcasecmp(smartlist_get(elts,1), "stdout")) {
|
|
if (!validate_only) {
|
|
add_stream_log(levelMin, levelMax, "<stdout>", stdout);
|
|
close_temp_logs();
|
|
}
|
|
} else if (!strcasecmp(smartlist_get(elts,1), "stderr")) {
|
|
if (!validate_only) {
|
|
add_stream_log(levelMin, levelMax, "<stderr>", stderr);
|
|
close_temp_logs();
|
|
}
|
|
} else if (!strcasecmp(smartlist_get(elts,1), "syslog")) {
|
|
#ifdef HAVE_SYSLOG_H
|
|
if (!validate_only)
|
|
add_syslog_log(levelMin, levelMax);
|
|
#else
|
|
log_fn(LOG_WARN, "Syslog is not supported in this compilation.");
|
|
#endif
|
|
} else {
|
|
log_fn(LOG_WARN, "Unrecognized log type %s",
|
|
(const char*)smartlist_get(elts,1));
|
|
if (strchr(smartlist_get(elts,1), '/')) {
|
|
log_fn(LOG_WARN, "Did you mean to say 'Log file %s' ?",
|
|
(const char *)smartlist_get(elts,1));
|
|
}
|
|
ok = 0; goto cleanup;
|
|
}
|
|
cleanup:
|
|
SMARTLIST_FOREACH(elts, char*, cp, tor_free(cp));
|
|
smartlist_clear(elts);
|
|
}
|
|
smartlist_free(elts);
|
|
if (!validate_only)
|
|
close_temp_logs();
|
|
|
|
return ok?0:-1;
|
|
}
|
|
|
|
/** Add a single option of the form Log min-max \<type\> [fname] to options. */
|
|
static int
|
|
add_single_log_option(or_options_t *options, int minSeverity, int maxSeverity,
|
|
const char *type, const char *fname)
|
|
{
|
|
char buf[512];
|
|
int n;
|
|
|
|
n = tor_snprintf(buf, sizeof(buf), "%s%s%s %s%s%s",
|
|
log_level_to_string(minSeverity),
|
|
maxSeverity == LOG_ERR ? "" : "-",
|
|
maxSeverity == LOG_ERR ? "" : log_level_to_string(maxSeverity),
|
|
type, fname?" ":"", fname?fname:"");
|
|
if (n<0) {
|
|
log_fn(LOG_WARN, "Normalized log option too long.");
|
|
return -1;
|
|
}
|
|
|
|
log(LOG_WARN, "The old LogLevel/LogFile/DebugLogFile/SysLog options are deprecated, and will go away soon. Your new torrc line should be: 'Log %s'", buf);
|
|
config_line_append(&options->Logs, "Log", buf);
|
|
return 0;
|
|
}
|
|
|
|
/** Convert all old-style logging options to new-style Log options. Return 0
|
|
* on success, -1 on failure. */
|
|
static int
|
|
normalize_log_options(or_options_t *options)
|
|
{
|
|
/* The order of options is: Level? (File Level?)+
|
|
*/
|
|
config_line_t *opt = options->OldLogOptions;
|
|
|
|
/* Special case for if first option is LogLevel. */
|
|
if (opt && !strcasecmp(opt->key, "LogLevel")) {
|
|
if (opt->next && (!strcasecmp(opt->next->key, "LogFile") ||
|
|
!strcasecmp(opt->next->key, "SysLog"))) {
|
|
if (convert_log_option(options, opt, opt->next, options->RunAsDaemon) < 0)
|
|
return -1;
|
|
opt = opt->next->next;
|
|
} else if (!opt->next) {
|
|
if (convert_log_option(options, opt, NULL, options->RunAsDaemon) < 0)
|
|
return -1;
|
|
opt = opt->next;
|
|
} else {
|
|
; /* give warning below */
|
|
}
|
|
}
|
|
|
|
while (opt) {
|
|
if (!strcasecmp(opt->key, "LogLevel")) {
|
|
log_fn(LOG_WARN, "Two LogLevel options in a row without intervening LogFile or SysLog");
|
|
opt = opt->next;
|
|
} else {
|
|
tor_assert(!strcasecmp(opt->key, "LogFile") ||
|
|
!strcasecmp(opt->key, "SysLog"));
|
|
if (opt->next && !strcasecmp(opt->next->key, "LogLevel")) {
|
|
/* LogFile/SysLog followed by LogLevel */
|
|
if (convert_log_option(options,opt->next,opt, options->RunAsDaemon) < 0)
|
|
return -1;
|
|
opt = opt->next->next;
|
|
} else {
|
|
/* LogFile/SysLog followed by LogFile/SysLog or end of list. */
|
|
if (convert_log_option(options,NULL, opt, options->RunAsDaemon) < 0)
|
|
return -1;
|
|
opt = opt->next;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (options->DebugLogFile) {
|
|
if (add_single_log_option(options, LOG_DEBUG, LOG_ERR, "file", options->DebugLogFile) < 0)
|
|
return -1;
|
|
}
|
|
|
|
tor_free(options->DebugLogFile);
|
|
config_free_lines(options->OldLogOptions);
|
|
options->OldLogOptions = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define DEFAULT_EXIT_POLICY "reject 0.0.0.0/8,reject 169.254.0.0/16,reject 127.0.0.0/8,reject 192.168.0.0/16,reject 10.0.0.0/8,reject 172.16.0.0/12,reject *:25,reject *:119,reject *:135-139,reject *:445,reject *:1214,reject *:4661-4666,reject *:6346-6429,reject *:6699,reject *:6881-6999,accept *:*"
|
|
|
|
/** Add the default exit policy entries to <b>policy</b>
|
|
*/
|
|
void
|
|
options_append_default_exit_policy(addr_policy_t **policy)
|
|
{
|
|
config_line_t tmp;
|
|
addr_policy_t *ap;
|
|
|
|
tmp.key = NULL;
|
|
tmp.value = (char*)DEFAULT_EXIT_POLICY;
|
|
tmp.next = NULL;
|
|
config_parse_addr_policy(&tmp, policy, -1);
|
|
|
|
/* Remove redundant parts, if any. */
|
|
for (ap=*policy; ap; ap=ap->next) {
|
|
if (ap->msk == 0 && ap->prt_min <= 1 && ap->prt_max >= 65535) {
|
|
if (ap->next) {
|
|
addr_policy_free(ap->next);
|
|
ap->next = NULL;
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Given a linked list of config lines containing "allow" and "deny" tokens,
|
|
* parse them and append the result to <b>dest</b>. Return -1 if any tokens
|
|
* are malformed, else return 0.
|
|
*/
|
|
int
|
|
config_parse_addr_policy(config_line_t *cfg,
|
|
addr_policy_t **dest,
|
|
int assume_action)
|
|
{
|
|
addr_policy_t **nextp;
|
|
smartlist_t *entries;
|
|
int r = 0;
|
|
|
|
if (!cfg)
|
|
return 0;
|
|
|
|
nextp = dest;
|
|
|
|
while (*nextp)
|
|
nextp = &((*nextp)->next);
|
|
|
|
entries = smartlist_create();
|
|
for (; cfg; cfg = cfg->next) {
|
|
smartlist_split_string(entries, cfg->value, ",", SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, 0);
|
|
SMARTLIST_FOREACH(entries, const char *, ent,
|
|
{
|
|
log_fn(LOG_DEBUG,"Adding new entry '%s'",ent);
|
|
*nextp = router_parse_addr_policy_from_string(ent, assume_action);
|
|
if (*nextp) {
|
|
nextp = &((*nextp)->next);
|
|
} else {
|
|
log_fn(LOG_WARN,"Malformed policy '%s'.", ent);
|
|
r = -1;
|
|
}
|
|
});
|
|
SMARTLIST_FOREACH(entries, char *, ent, tor_free(ent));
|
|
smartlist_clear(entries);
|
|
}
|
|
smartlist_free(entries);
|
|
return r;
|
|
}
|
|
|
|
/** Release all storage held by <b>p</b> */
|
|
void
|
|
addr_policy_free(addr_policy_t *p)
|
|
{
|
|
addr_policy_t *e;
|
|
|
|
while (p) {
|
|
e = p;
|
|
p = p->next;
|
|
tor_free(e->string);
|
|
tor_free(e);
|
|
}
|
|
}
|
|
|
|
/** Parse a single RedirectExit line's contents from <b>line</b>. If
|
|
* they are valid, and <b>result</b> is not NULL, add an element to
|
|
* <b>result</b> and return 0. Else if they are valid, return 0.
|
|
* Else return -1. */
|
|
static int
|
|
parse_redirect_line(smartlist_t *result, config_line_t *line)
|
|
{
|
|
smartlist_t *elements = NULL;
|
|
exit_redirect_t *r;
|
|
|
|
tor_assert(line);
|
|
|
|
r = tor_malloc_zero(sizeof(exit_redirect_t));
|
|
elements = smartlist_create();
|
|
smartlist_split_string(elements, line->value, NULL,
|
|
SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, 0);
|
|
if (smartlist_len(elements) != 2) {
|
|
log_fn(LOG_WARN, "Wrong number of elements in RedirectExit line");
|
|
goto err;
|
|
}
|
|
if (parse_addr_and_port_range(smartlist_get(elements,0),&r->addr,&r->mask,
|
|
&r->port_min,&r->port_max)) {
|
|
log_fn(LOG_WARN, "Error parsing source address in RedirectExit line");
|
|
goto err;
|
|
}
|
|
if (0==strcasecmp(smartlist_get(elements,1), "pass")) {
|
|
r->is_redirect = 0;
|
|
} else {
|
|
if (parse_addr_port(smartlist_get(elements,1),NULL,&r->addr_dest,
|
|
&r->port_dest)) {
|
|
log_fn(LOG_WARN, "Error parsing dest address in RedirectExit line");
|
|
goto err;
|
|
}
|
|
r->is_redirect = 1;
|
|
}
|
|
|
|
goto done;
|
|
err:
|
|
tor_free(r);
|
|
done:
|
|
SMARTLIST_FOREACH(elements, char *, cp, tor_free(cp));
|
|
smartlist_free(elements);
|
|
if (r) {
|
|
if (result)
|
|
smartlist_add(result, r);
|
|
else
|
|
tor_free(r);
|
|
return 0;
|
|
} else {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
/** Read the contents of a DirServer line from <b>line</b>. Return 0
|
|
* if the line is well-formed, and -1 if it isn't. If
|
|
* <b>validate_only</b> is 0, and the line is well-formed, then add
|
|
* the dirserver described in the line as a valid server. */
|
|
static int
|
|
parse_dir_server_line(const char *line, int validate_only)
|
|
{
|
|
smartlist_t *items = NULL;
|
|
int r;
|
|
char *addrport, *address=NULL;
|
|
uint16_t port;
|
|
char digest[DIGEST_LEN];
|
|
|
|
items = smartlist_create();
|
|
smartlist_split_string(items, line, NULL,
|
|
SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, 2);
|
|
if (smartlist_len(items) < 2) {
|
|
log_fn(LOG_WARN, "Too few arguments to DirServer line.");
|
|
goto err;
|
|
}
|
|
addrport = smartlist_get(items, 0);
|
|
if (parse_addr_port(addrport, &address, NULL, &port)<0) {
|
|
log_fn(LOG_WARN, "Error parsing DirServer address '%s'", addrport);
|
|
goto err;
|
|
}
|
|
if (!port) {
|
|
log_fn(LOG_WARN, "Missing port in DirServer address '%s'",addrport);
|
|
goto err;
|
|
}
|
|
|
|
tor_strstrip(smartlist_get(items, 1), " ");
|
|
if (strlen(smartlist_get(items, 1)) != HEX_DIGEST_LEN) {
|
|
log_fn(LOG_WARN, "Key digest for DirServer is wrong length.");
|
|
goto err;
|
|
}
|
|
if (base16_decode(digest, DIGEST_LEN,
|
|
smartlist_get(items,1), HEX_DIGEST_LEN)<0) {
|
|
log_fn(LOG_WARN, "Unable to decode DirServer key digest.");
|
|
goto err;
|
|
}
|
|
|
|
if (!validate_only) {
|
|
log_fn(LOG_DEBUG, "Trusted dirserver at %s:%d (%s)", address, (int)port,
|
|
(char*)smartlist_get(items,1));
|
|
add_trusted_dir_server(address, port, digest);
|
|
}
|
|
|
|
r = 0;
|
|
goto done;
|
|
|
|
err:
|
|
r = -1;
|
|
|
|
done:
|
|
SMARTLIST_FOREACH(items, char*, s, tor_free(s));
|
|
smartlist_free(items);
|
|
tor_free(address);
|
|
return r;
|
|
}
|
|
|
|
/** Adjust the value of options->DataDirectory, or fill it in if it's
|
|
* absent. Return 0 on success, -1 on failure. */
|
|
static int
|
|
normalize_data_directory(or_options_t *options)
|
|
{
|
|
#ifdef MS_WINDOWS
|
|
char *p;
|
|
if (options->DataDirectory)
|
|
return 0; /* all set */
|
|
p = tor_malloc(MAX_PATH);
|
|
strlcpy(p,get_windows_conf_root(),MAX_PATH);
|
|
options->DataDirectory = p;
|
|
return 0;
|
|
#else
|
|
const char *d = options->DataDirectory;
|
|
if (!d)
|
|
d = "~/.tor";
|
|
|
|
if (strncmp(d,"~/",2) == 0) {
|
|
char *fn = expand_filename(d);
|
|
if (!fn) {
|
|
log_fn(LOG_ERR,"Failed to expand filename \"%s\".", d);
|
|
return -1;
|
|
}
|
|
if (!options->DataDirectory && !strcmp(fn,"/.tor")) {
|
|
/* If our homedir is /, we probably don't want to use it. */
|
|
/* XXXX Default to /var/lib/tor? */
|
|
log_fn(LOG_WARN, "Default DataDirectory is \"~/.tor\". This expands to \"%s\", which is probably not what you want. Using \"%s/tor\" instead", fn, LOCALSTATEDIR);
|
|
tor_free(fn);
|
|
fn = tor_strdup(LOCALSTATEDIR"/tor");
|
|
|
|
}
|
|
tor_free(options->DataDirectory);
|
|
options->DataDirectory = fn;
|
|
}
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
/** Check and normalize the value of options->DataDirectory; return 0 if it
|
|
* sane, -1 otherwise. */
|
|
static int
|
|
validate_data_directory(or_options_t *options)
|
|
{
|
|
if (normalize_data_directory(options) < 0)
|
|
return -1;
|
|
tor_assert(options->DataDirectory);
|
|
if (strlen(options->DataDirectory) > (512-128)) {
|
|
log_fn(LOG_ERR, "DataDirectory is too long.");
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#define GENERATED_FILE_PREFIX "# This file was generated by Tor; if you edit it, comments will not be preserved"
|
|
|
|
/** Save a configuration file for the configuration in <b>options</b>
|
|
* into the file <b>fname</b>. If the file already exists, and
|
|
* doesn't begin with GENERATED_FILE_PREFIX, rename it. Otherwise
|
|
* replace it. Return 0 on success, -1 on failure. */
|
|
static int
|
|
write_configuration_file(const char *fname, or_options_t *options)
|
|
{
|
|
char *old_val=NULL, *new_val=NULL, *new_conf=NULL;
|
|
int rename_old = 0, r;
|
|
size_t len;
|
|
|
|
if (fname) {
|
|
switch (file_status(fname)) {
|
|
case FN_FILE:
|
|
old_val = read_file_to_str(fname, 0);
|
|
if (strcmpstart(old_val, GENERATED_FILE_PREFIX)) {
|
|
rename_old = 1;
|
|
}
|
|
tor_free(old_val);
|
|
break;
|
|
case FN_NOENT:
|
|
break;
|
|
default:
|
|
log_fn(LOG_WARN,"Config file \"%s\" is not a file? Failing.", fname);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (!(new_conf = options_dump(options, 1))) {
|
|
log_fn(LOG_WARN, "Couldn't get configuration string");
|
|
goto err;
|
|
}
|
|
|
|
len = strlen(new_conf)+128;
|
|
new_val = tor_malloc(len);
|
|
tor_snprintf(new_val, len, "%s\n\n%s", GENERATED_FILE_PREFIX, new_conf);
|
|
|
|
if (rename_old) {
|
|
int i = 1;
|
|
size_t fn_tmp_len = strlen(fname)+32;
|
|
char *fn_tmp;
|
|
tor_assert(fn_tmp_len > strlen(fname)); /*check for overflow*/
|
|
fn_tmp = tor_malloc(fn_tmp_len);
|
|
while (1) {
|
|
if (tor_snprintf(fn_tmp, fn_tmp_len, "%s.orig.%d", fname, i)<0) {
|
|
log_fn(LOG_WARN, "tor_snprintf failed inexplicably");
|
|
tor_free(fn_tmp);
|
|
goto err;
|
|
}
|
|
if (file_status(fn_tmp) == FN_NOENT)
|
|
break;
|
|
++i;
|
|
}
|
|
log_fn(LOG_NOTICE, "Renaming old configuration file to \"%s\"", fn_tmp);
|
|
rename(fname, fn_tmp);
|
|
tor_free(fn_tmp);
|
|
}
|
|
|
|
write_str_to_file(fname, new_val, 0);
|
|
|
|
r = 0;
|
|
goto done;
|
|
err:
|
|
r = -1;
|
|
done:
|
|
tor_free(new_val);
|
|
tor_free(new_conf);
|
|
return r;
|
|
}
|
|
|
|
/**
|
|
* Save the current configuration file value to disk. Return 0 on
|
|
* success, -1 on failure.
|
|
**/
|
|
int
|
|
options_save_current(void)
|
|
{
|
|
if (torrc_fname) {
|
|
/* XXX This fails if we can't write to our configuration file.
|
|
* Arguably, we should try falling back to datadirectory or something.
|
|
* But just as arguably, we shouldn't. */
|
|
return write_configuration_file(torrc_fname, get_options());
|
|
}
|
|
return write_configuration_file(get_default_conf_file(), get_options());
|
|
}
|
|
|
|
struct unit_table_t {
|
|
const char *unit;
|
|
uint64_t multiplier;
|
|
};
|
|
|
|
static struct unit_table_t memory_units[] = {
|
|
{ "", 1 },
|
|
{ "b", 1<< 0 },
|
|
{ "byte", 1<< 0 },
|
|
{ "bytes", 1<< 0 },
|
|
{ "kb", 1<<10 },
|
|
{ "kilobyte", 1<<10 },
|
|
{ "kilobytes", 1<<10 },
|
|
{ "m", 1<<20 },
|
|
{ "mb", 1<<20 },
|
|
{ "megabyte", 1<<20 },
|
|
{ "megabytes", 1<<20 },
|
|
{ "gb", 1<<30 },
|
|
{ "gigabyte", 1<<30 },
|
|
{ "gigabytes", 1<<30 },
|
|
{ "tb", U64_LITERAL(1)<<40 },
|
|
{ "terabyte", U64_LITERAL(1)<<40 },
|
|
{ "terabytes", U64_LITERAL(1)<<40 },
|
|
{ NULL, 0 },
|
|
};
|
|
|
|
static struct unit_table_t time_units[] = {
|
|
{ "", 1 },
|
|
{ "second", 1 },
|
|
{ "seconds", 1 },
|
|
{ "minute", 60 },
|
|
{ "minutes", 60 },
|
|
{ "hour", 60*60 },
|
|
{ "hours", 60*60 },
|
|
{ "day", 24*60*60 },
|
|
{ "days", 24*60*60 },
|
|
{ "week", 7*24*60*60 },
|
|
{ "weeks", 7*24*60*60 },
|
|
{ NULL, 0 },
|
|
};
|
|
|
|
/** Parse a string <b>val</b> containing a number, zero or more
|
|
* spaces, and an optional unit string. If the unit appears in the
|
|
* table <b>u</b>, then multiply the number by the unit multiplier.
|
|
* On success, set *<b>ok</b> to 1 and return this product.
|
|
* Otherwise, set *<b>ok</b> to 0.
|
|
*/
|
|
static uint64_t
|
|
config_parse_units(const char *val, struct unit_table_t *u, int *ok)
|
|
{
|
|
uint64_t v;
|
|
char *cp;
|
|
|
|
tor_assert(ok);
|
|
|
|
v = tor_parse_uint64(val, 10, 0, UINT64_MAX, ok, &cp);
|
|
if (!*ok)
|
|
return 0;
|
|
if (!cp) {
|
|
*ok = 1;
|
|
return v;
|
|
}
|
|
while (TOR_ISSPACE(*cp))
|
|
++cp;
|
|
for ( ;u->unit;++u) {
|
|
if (!strcasecmp(u->unit, cp)) {
|
|
v *= u->multiplier;
|
|
*ok = 1;
|
|
return v;
|
|
}
|
|
}
|
|
log_fn(LOG_WARN, "Unknown unit '%s'.", cp);
|
|
*ok = 0;
|
|
return 0;
|
|
}
|
|
|
|
/** Parse a string in the format "number unit", where unit is a unit of
|
|
* information (byte, KB, M, etc). On success, set *<b>ok</b> to true
|
|
* and return the number of bytes specified. Otherwise, set
|
|
* *<b>ok</b> to false and return 0. */
|
|
static uint64_t
|
|
config_parse_memunit(const char *s, int *ok) {
|
|
return config_parse_units(s, memory_units, ok);
|
|
}
|
|
|
|
/** Parse a string in the format "number unit", where unit is a unit of time.
|
|
* On success, set *<b>ok</b> to true and return the number of seconds in
|
|
* the provided interval. Otherwise, set *<b>ok</b> to 0 and return -1.
|
|
*/
|
|
static int
|
|
config_parse_interval(const char *s, int *ok) {
|
|
uint64_t r;
|
|
r = config_parse_units(s, time_units, ok);
|
|
if (!ok)
|
|
return -1;
|
|
if (r > INT_MAX) {
|
|
log_fn(LOG_WARN, "Interval '%s' is too long", s);
|
|
*ok = 0;
|
|
return -1;
|
|
}
|
|
return (int)r;
|
|
}
|
|
|
|
/**
|
|
* Initialize the libevent library.
|
|
*/
|
|
static int
|
|
init_libevent(void)
|
|
{
|
|
configure_libevent_logging();
|
|
/* If the kernel complains that some method (say, epoll) doesn't
|
|
* exist, we don't care about it, since libevent will cope.
|
|
*/
|
|
suppress_libevent_log_msg("Function not implemented");
|
|
#ifdef __APPLE__
|
|
putenv("EVENT_NOKQUEUE=1");
|
|
#endif
|
|
event_init();
|
|
suppress_libevent_log_msg(NULL);
|
|
#if defined(HAVE_EVENT_GET_VERSION) && defined(HAVE_EVENT_GET_METHOD)
|
|
/* Making this a NOTICE for now so we can link bugs to a libevent versions
|
|
* or methods better. */
|
|
log(LOG_NOTICE, "Initialized libevent version %s using method %s. Good.",
|
|
event_get_version(), event_get_method());
|
|
check_libevent_version(event_get_method(), event_get_version(),
|
|
get_options()->ORPort != 0);
|
|
#else
|
|
log(LOG_NOTICE, "Initialized old libevent (version 1.0b or earlier).");
|
|
log(LOG_WARN, "You have a very old version of libevent. It is likely to be buggy; please consider building Tor with a more recent version.");
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if defined(HAVE_EVENT_GET_VERSION) && defined(HAVE_EVENT_GET_METHOD)
|
|
/**
|
|
* Compare the given libevent method and version to a list of versions
|
|
* which are known not to work. Warn the user as appropriate.
|
|
*
|
|
*/
|
|
static void
|
|
check_libevent_version(const char *m, const char *v, int server)
|
|
{
|
|
int buggy = 0, iffy = 0, slow = 0;
|
|
|
|
tor_assert(m && v);
|
|
|
|
if (!strcmp(m, "kqueue")) {
|
|
if (!strcmp(v, "1.0c") || !strcmp(v, "1.0d") || !strcmp(v, "1.0e") ||
|
|
!strcmp(v, "1.1")) {
|
|
buggy = 1;
|
|
}
|
|
} else if (!strcmp(m, "epoll")) {
|
|
if (!strcmp(v, "1.0c") || !strcmp(v, "1.0d") || !strcmp(v, "1.0e"))
|
|
iffy = 1;
|
|
} else if (!strcmp(m, "poll")) {
|
|
if (!strcmp(v, "1.0c") || !strcmp(v, "1.0d"))
|
|
buggy = 1;
|
|
else if (!strcmp(v, "1.0e"))
|
|
slow = 1;
|
|
} else if (!strcmp(m, "poll")) {
|
|
if (!strcmp(v, "1.0c") || !strcmp(v, "1.0d") || !strcmp(v, "1.0e"))
|
|
slow = 1;
|
|
}
|
|
|
|
if (buggy) {
|
|
log(LOG_WARN,
|
|
"There are known bugs in using %s with libevent %s. "
|
|
"Please use the latest version of libevent.", m, v);
|
|
} else if (iffy) {
|
|
log(LOG_WARN,
|
|
"There are minor bugs in using %s with libevent %s. "
|
|
"You may want to use the latest version of libevent.", m, v);
|
|
} else if (slow && server) {
|
|
log(LOG_WARN,
|
|
"libevent %s can be very slow with %s. "
|
|
"When running a server, please use the latest version of libevent.",v,m);
|
|
}
|
|
|
|
}
|
|
#endif
|
|
|
|
/* Versioning issues and state: we want to be able to understand old state
|
|
* files, and not choke on new ones.
|
|
*
|
|
* We could preserve all unrecognized variables across invocations, but we could
|
|
* screw up order, if their order is significant with respect to existing
|
|
* options.
|
|
*
|
|
* We could just dump unrecognized variables if you downgrade.
|
|
*
|
|
* This needs thought. XXXX NM
|
|
*/
|
|
|
|
/** DOCDOC */
|
|
or_state_t *
|
|
get_or_state(void)
|
|
{
|
|
return global_state;
|
|
}
|
|
|
|
/** DOCDOC */
|
|
static char *
|
|
get_or_state_fname(void)
|
|
{
|
|
char *fname = NULL;
|
|
or_options_t *options = get_options();
|
|
size_t len = strlen(options->DataDirectory) + 16;
|
|
fname = tor_malloc(len);
|
|
tor_snprintf(fname, len, "%s/state", options->DataDirectory);
|
|
return fname;
|
|
}
|
|
|
|
/** DOCDOC */
|
|
static int
|
|
or_state_validate(or_state_t *state)
|
|
{
|
|
const char *err;
|
|
if (helper_nodes_parse_state(state, 0, &err)<0) {
|
|
log_fn(LOG_WARN, "Unable to parse helper nodes: %s", err);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/** DOCDOC */
|
|
static void
|
|
or_state_set(or_state_t *new_state)
|
|
{
|
|
const char *err;
|
|
tor_assert(new_state);
|
|
if (global_state)
|
|
config_free(&state_format, global_state);
|
|
global_state = new_state;
|
|
if (helper_nodes_parse_state(global_state, 1, &err)<0)
|
|
log_fn(LOG_WARN,"Unparseable helper nodes state: %s",err);
|
|
|
|
}
|
|
|
|
/* DOCDOC */
|
|
int
|
|
or_state_load(void)
|
|
{
|
|
or_state_t *new_state = NULL;
|
|
char *contents = NULL, *fname;
|
|
int r = -1;
|
|
|
|
fname = get_or_state_fname();
|
|
switch (file_status(fname)) {
|
|
case FN_FILE:
|
|
if (!(contents = read_file_to_str(fname, 0))) {
|
|
log_fn(LOG_WARN, "Unable to read state file \"%s\"", fname);
|
|
goto done;
|
|
}
|
|
break;
|
|
case FN_NOENT:
|
|
break;
|
|
default:
|
|
log_fn(LOG_WARN,"State file \"%s\" is not a file? Failing.", fname);
|
|
goto done;
|
|
}
|
|
new_state = tor_malloc_zero(sizeof(or_state_t));
|
|
new_state->_magic = OR_STATE_MAGIC;
|
|
config_init(&state_format, new_state);
|
|
if (contents) {
|
|
config_line_t *lines=NULL;
|
|
int assign_retval;
|
|
if (config_get_lines(contents, &lines)<0)
|
|
goto done;
|
|
assign_retval = config_assign(&state_format, new_state, lines, 0);
|
|
config_free_lines(lines);
|
|
if (assign_retval<0)
|
|
goto done;
|
|
}
|
|
|
|
if (or_state_validate(new_state) < 0)
|
|
goto done;
|
|
|
|
if (contents)
|
|
log_fn(LOG_INFO, "Loaded state from \"%s\"", fname);
|
|
else
|
|
log_fn(LOG_INFO, "Initialized state");
|
|
or_state_set(new_state);
|
|
new_state = NULL;
|
|
if (!contents) {
|
|
global_state->dirty = 1;
|
|
or_state_save();
|
|
}
|
|
|
|
r = 0;
|
|
done:
|
|
tor_free(fname);
|
|
tor_free(contents);
|
|
if (new_state)
|
|
config_free(&state_format, new_state);
|
|
|
|
return r;
|
|
}
|
|
|
|
/** DOCDOC */
|
|
int
|
|
or_state_save(void)
|
|
{
|
|
char *state, *contents;
|
|
char tbuf[ISO_TIME_LEN+1];
|
|
size_t len;
|
|
char *fname;
|
|
|
|
helper_nodes_update_state(global_state);
|
|
|
|
if (!global_state->dirty)
|
|
return 0;
|
|
|
|
global_state->LastWritten = time(NULL);
|
|
state = config_dump(&state_format, global_state, 0);
|
|
len = strlen(state)+128;
|
|
contents = tor_malloc(len);
|
|
format_local_iso_time(tbuf, time(NULL));
|
|
tor_snprintf(contents, len,
|
|
"# Tor state file last generated on %s\n"
|
|
"# You *do not* need to edit this file.\n\n%s",
|
|
tbuf, state);
|
|
tor_free(state);
|
|
fname = get_or_state_fname();
|
|
if (write_str_to_file(fname, contents, 0)<0) {
|
|
log_fn(LOG_WARN, "Unable to write state to file \"%s\"", fname);
|
|
tor_free(fname);
|
|
tor_free(contents);
|
|
return -1;
|
|
}
|
|
log_fn(LOG_INFO, "Saved state to \"%s\"", fname);
|
|
tor_free(fname);
|
|
tor_free(contents);
|
|
|
|
global_state->dirty = 0;
|
|
return 0;
|
|
}
|
|
|
|
/** DOCDOC */
|
|
int
|
|
config_getinfo_helper(const char *question, char **answer)
|
|
{
|
|
if (!strcmp(question, "config/names")) {
|
|
smartlist_t *sl = smartlist_create();
|
|
int i;
|
|
for (i = 0; _option_vars[i].name; ++i) {
|
|
config_var_t *var = &_option_vars[i];
|
|
const char *type, *desc;
|
|
char *line;
|
|
size_t len;
|
|
desc = config_find_description(&options_format, var->name);
|
|
switch (var->type) {
|
|
case CONFIG_TYPE_STRING: type = "String"; break;
|
|
case CONFIG_TYPE_UINT: type = "Integer"; break;
|
|
case CONFIG_TYPE_INTERVAL: type = "TimeInterval"; break;
|
|
case CONFIG_TYPE_MEMUNIT: type = "DataSize"; break;
|
|
case CONFIG_TYPE_DOUBLE: type = "Float"; break;
|
|
case CONFIG_TYPE_BOOL: type = "Boolean"; break;
|
|
case CONFIG_TYPE_ISOTIME: type = "Time"; break;
|
|
case CONFIG_TYPE_CSV: type = "CommaList"; break;
|
|
case CONFIG_TYPE_LINELIST: type = "LineList"; break;
|
|
case CONFIG_TYPE_LINELIST_S: type = "Dependant"; break;
|
|
case CONFIG_TYPE_LINELIST_V: type = "Virtual"; break;
|
|
default:
|
|
case CONFIG_TYPE_OBSOLETE:
|
|
type = NULL; break;
|
|
}
|
|
if (!type)
|
|
continue;
|
|
len = strlen(var->name)+strlen(type)+16;
|
|
if (desc)
|
|
len += strlen(desc);
|
|
line = tor_malloc(len);
|
|
if (desc)
|
|
tor_snprintf(line, len, "%s %s %s\n",var->name,type,desc);
|
|
else
|
|
tor_snprintf(line, len, "%s %s\n",var->name,type);
|
|
smartlist_add(sl, line);
|
|
}
|
|
*answer = smartlist_join_strings(sl, "", 0, NULL);
|
|
SMARTLIST_FOREACH(sl, char *, c, tor_free(c));
|
|
smartlist_free(sl);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/** Dump the version of every file to the log. */
|
|
static void
|
|
print_cvs_version(void)
|
|
{
|
|
extern const char aes_c_id[];
|
|
extern const char compat_c_id[];
|
|
extern const char container_c_id[];
|
|
extern const char crypto_c_id[];
|
|
extern const char log_c_id[];
|
|
extern const char torgzip_c_id[];
|
|
extern const char tortls_c_id[];
|
|
extern const char util_c_id[];
|
|
|
|
extern const char buffers_c_id[];
|
|
extern const char circuitbuild_c_id[];
|
|
extern const char circuitlist_c_id[];
|
|
extern const char circuituse_c_id[];
|
|
extern const char command_c_id[];
|
|
// extern const char config_c_id[];
|
|
extern const char connection_c_id[];
|
|
extern const char connection_edge_c_id[];
|
|
extern const char connection_or_c_id[];
|
|
extern const char control_c_id[];
|
|
extern const char cpuworker_c_id[];
|
|
extern const char directory_c_id[];
|
|
extern const char dirserv_c_id[];
|
|
extern const char dns_c_id[];
|
|
extern const char hibernate_c_id[];
|
|
extern const char main_c_id[];
|
|
extern const char onion_c_id[];
|
|
extern const char relay_c_id[];
|
|
extern const char rendclient_c_id[];
|
|
extern const char rendcommon_c_id[];
|
|
extern const char rendmid_c_id[];
|
|
extern const char rendservice_c_id[];
|
|
extern const char rephist_c_id[];
|
|
extern const char router_c_id[];
|
|
extern const char routerlist_c_id[];
|
|
extern const char routerparse_c_id[];
|
|
|
|
puts(AES_H_ID);
|
|
puts(COMPAT_H_ID);
|
|
puts(CONTAINER_H_ID);
|
|
puts(CRYPTO_H_ID);
|
|
puts(LOG_H_ID);
|
|
puts(TORGZIP_H_ID);
|
|
puts(TORINT_H_ID);
|
|
puts(TORTLS_H_ID);
|
|
puts(UTIL_H_ID);
|
|
puts(aes_c_id);
|
|
puts(compat_c_id);
|
|
puts(container_c_id);
|
|
puts(crypto_c_id);
|
|
puts(log_c_id);
|
|
puts(torgzip_c_id);
|
|
puts(tortls_c_id);
|
|
puts(util_c_id);
|
|
|
|
puts(OR_H_ID);
|
|
puts(buffers_c_id);
|
|
puts(circuitbuild_c_id);
|
|
puts(circuitlist_c_id);
|
|
puts(circuituse_c_id);
|
|
puts(command_c_id);
|
|
puts(config_c_id);
|
|
puts(connection_c_id);
|
|
puts(connection_edge_c_id);
|
|
puts(connection_or_c_id);
|
|
puts(control_c_id);
|
|
puts(cpuworker_c_id);
|
|
puts(directory_c_id);
|
|
puts(dirserv_c_id);
|
|
puts(dns_c_id);
|
|
puts(hibernate_c_id);
|
|
puts(main_c_id);
|
|
puts(onion_c_id);
|
|
puts(relay_c_id);
|
|
puts(rendclient_c_id);
|
|
puts(rendcommon_c_id);
|
|
puts(rendmid_c_id);
|
|
puts(rendservice_c_id);
|
|
puts(rephist_c_id);
|
|
puts(router_c_id);
|
|
puts(routerlist_c_id);
|
|
puts(routerparse_c_id);
|
|
}
|
|
|