X-Git-Url: http://andersk.mit.edu/gitweb/openssh.git/blobdiff_plain/21289cd03008ed8387b9cc1111f17e691cd91ea1..6a2c4cd8b3908e0d7e28789e83b4dc2b69aaf6d4:/readconf.c diff --git a/readconf.c b/readconf.c index c9c463b2..429f6912 100644 --- a/readconf.c +++ b/readconf.c @@ -12,7 +12,7 @@ */ #include "includes.h" -RCSID("$OpenBSD: readconf.c,v 1.107 2003/05/14 18:16:20 jakob Exp $"); +RCSID("$OpenBSD: readconf.c,v 1.133 2004/06/17 15:10:14 djm Exp $"); #include "ssh.h" #include "xmalloc.h" @@ -57,7 +57,6 @@ RCSID("$OpenBSD: readconf.c,v 1.107 2003/05/14 18:16:20 jakob Exp $"); Host fascist.blob.com Port 23123 User tylonen - RhostsAuthentication no PasswordAuthentication no Host puukko.hut.fi @@ -75,12 +74,11 @@ RCSID("$OpenBSD: readconf.c,v 1.107 2003/05/14 18:16:20 jakob Exp $"); Host * ForwardAgent no ForwardX11 no - RhostsAuthentication yes PasswordAuthentication yes RSAAuthentication yes RhostsRSAAuthentication yes StrictHostKeyChecking yes - KeepAlives no + TcpKeepAlive no IdentityFile ~/.ssh/identity Port 22 EscapeChar ~ @@ -91,31 +89,25 @@ RCSID("$OpenBSD: readconf.c,v 1.107 2003/05/14 18:16:20 jakob Exp $"); typedef enum { oBadOption, - oForwardAgent, oForwardX11, oGatewayPorts, oRhostsAuthentication, + oForwardAgent, oForwardX11, oForwardX11Trusted, oGatewayPorts, oPasswordAuthentication, oRSAAuthentication, oChallengeResponseAuthentication, oXAuthLocation, -#if defined(KRB4) || defined(KRB5) - oKerberosAuthentication, -#endif -#if defined(AFS) || defined(KRB5) - oKerberosTgtPassing, -#endif -#ifdef AFS - oAFSTokenPassing, -#endif oIdentityFile, oHostName, oPort, oCipher, oRemoteForward, oLocalForward, oUser, oHost, oEscapeChar, oRhostsRSAAuthentication, oProxyCommand, oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts, oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression, - oCompressionLevel, oKeepAlives, oNumberOfPasswordPrompts, + oCompressionLevel, oTCPKeepAlive, oNumberOfPasswordPrompts, oUsePrivilegedPort, oLogLevel, oCiphers, oProtocol, oMacs, oGlobalKnownHostsFile2, oUserKnownHostsFile2, oPubkeyAuthentication, oKbdInteractiveAuthentication, oKbdInteractiveDevices, oHostKeyAlias, oDynamicForward, oPreferredAuthentications, oHostbasedAuthentication, oHostKeyAlgorithms, oBindAddress, oSmartcardDevice, oClearAllForwardings, oNoHostAuthenticationForLocalhost, - oEnableSSHKeysign, oRekeyLimit, oVerifyHostKeyDNS, - oDeprecated + oEnableSSHKeysign, oRekeyLimit, oVerifyHostKeyDNS, oConnectTimeout, + oAddressFamily, oGssAuthentication, oGssDelegateCreds, + oServerAliveInterval, oServerAliveCountMax, oIdentitiesOnly, + oSendEnv, oControlPath, oControlMaster, + oDeprecated, oUnsupported } OpCodes; /* Textual representations of the tokens. */ @@ -126,10 +118,11 @@ static struct { } keywords[] = { { "forwardagent", oForwardAgent }, { "forwardx11", oForwardX11 }, + { "forwardx11trusted", oForwardX11Trusted }, { "xauthlocation", oXAuthLocation }, { "gatewayports", oGatewayPorts }, { "useprivilegedport", oUsePrivilegedPort }, - { "rhostsauthentication", oRhostsAuthentication }, + { "rhostsauthentication", oDeprecated }, { "passwordauthentication", oPasswordAuthentication }, { "kbdinteractiveauthentication", oKbdInteractiveAuthentication }, { "kbdinteractivedevices", oKbdInteractiveDevices }, @@ -141,19 +134,21 @@ static struct { { "challengeresponseauthentication", oChallengeResponseAuthentication }, { "skeyauthentication", oChallengeResponseAuthentication }, /* alias */ { "tisauthentication", oChallengeResponseAuthentication }, /* alias */ -#if defined(KRB4) || defined(KRB5) - { "kerberosauthentication", oKerberosAuthentication }, -#endif -#if defined(AFS) || defined(KRB5) - { "kerberostgtpassing", oKerberosTgtPassing }, -#endif -#ifdef AFS - { "afstokenpassing", oAFSTokenPassing }, + { "kerberosauthentication", oUnsupported }, + { "kerberostgtpassing", oUnsupported }, + { "afstokenpassing", oUnsupported }, +#if defined(GSSAPI) + { "gssapiauthentication", oGssAuthentication }, + { "gssapidelegatecredentials", oGssDelegateCreds }, +#else + { "gssapiauthentication", oUnsupported }, + { "gssapidelegatecredentials", oUnsupported }, #endif { "fallbacktorsh", oDeprecated }, { "usersh", oDeprecated }, { "identityfile", oIdentityFile }, { "identityfile2", oIdentityFile }, /* alias */ + { "identitiesonly", oIdentitiesOnly }, { "hostname", oHostName }, { "hostkeyalias", oHostKeyAlias }, { "proxycommand", oProxyCommand }, @@ -177,19 +172,31 @@ static struct { { "stricthostkeychecking", oStrictHostKeyChecking }, { "compression", oCompression }, { "compressionlevel", oCompressionLevel }, - { "keepalive", oKeepAlives }, + { "tcpkeepalive", oTCPKeepAlive }, + { "keepalive", oTCPKeepAlive }, /* obsolete */ { "numberofpasswordprompts", oNumberOfPasswordPrompts }, { "loglevel", oLogLevel }, { "dynamicforward", oDynamicForward }, { "preferredauthentications", oPreferredAuthentications }, { "hostkeyalgorithms", oHostKeyAlgorithms }, { "bindaddress", oBindAddress }, +#ifdef SMARTCARD { "smartcarddevice", oSmartcardDevice }, +#else + { "smartcarddevice", oUnsupported }, +#endif { "clearallforwardings", oClearAllForwardings }, { "enablesshkeysign", oEnableSSHKeysign }, { "verifyhostkeydns", oVerifyHostKeyDNS }, { "nohostauthenticationforlocalhost", oNoHostAuthenticationForLocalhost }, { "rekeylimit", oRekeyLimit }, + { "connecttimeout", oConnectTimeout }, + { "addressfamily", oAddressFamily }, + { "serveraliveinterval", oServerAliveInterval }, + { "serveralivecountmax", oServerAliveCountMax }, + { "sendenv", oSendEnv }, + { "controlpath", oControlPath }, + { "controlmaster", oControlMaster }, { NULL, oBadOption } }; @@ -306,6 +313,20 @@ process_config_line(Options *options, const char *host, /* don't panic, but count bad options */ return -1; /* NOTREACHED */ + case oConnectTimeout: + intptr = &options->connection_timeout; +parse_time: + arg = strdelim(&s); + if (!arg || *arg == '\0') + fatal("%s line %d: missing time value.", + filename, linenum); + if ((value = convtime(arg)) == -1) + fatal("%s line %d: invalid time value.", + filename, linenum); + if (*intptr == -1) + *intptr = value; + break; + case oForwardAgent: intptr = &options->forward_agent; parse_flag: @@ -327,6 +348,10 @@ parse_flag: intptr = &options->forward_x11; goto parse_flag; + case oForwardX11Trusted: + intptr = &options->forward_x11_trusted; + goto parse_flag; + case oGatewayPorts: intptr = &options->gateway_ports; goto parse_flag; @@ -335,10 +360,6 @@ parse_flag: intptr = &options->use_privileged_port; goto parse_flag; - case oRhostsAuthentication: - intptr = &options->rhosts_authentication; - goto parse_flag; - case oPasswordAuthentication: intptr = &options->password_authentication; goto parse_flag; @@ -370,21 +391,15 @@ parse_flag: case oChallengeResponseAuthentication: intptr = &options->challenge_response_authentication; goto parse_flag; -#if defined(KRB4) || defined(KRB5) - case oKerberosAuthentication: - intptr = &options->kerberos_authentication; - goto parse_flag; -#endif -#if defined(AFS) || defined(KRB5) - case oKerberosTgtPassing: - intptr = &options->kerberos_tgt_passing; + + case oGssAuthentication: + intptr = &options->gss_authentication; goto parse_flag; -#endif -#ifdef AFS - case oAFSTokenPassing: - intptr = &options->afs_token_passing; + + case oGssDelegateCreds: + intptr = &options->gss_deleg_creds; goto parse_flag; -#endif + case oBatchMode: intptr = &options->batch_mode; goto parse_flag; @@ -395,10 +410,11 @@ parse_flag: case oVerifyHostKeyDNS: intptr = &options->verify_host_key_dns; - goto parse_flag; + goto parse_yesnoask; case oStrictHostKeyChecking: intptr = &options->strict_host_key_checking; +parse_yesnoask: arg = strdelim(&s); if (!arg || *arg == '\0') fatal("%.200s line %d: Missing yes/no/ask argument.", @@ -420,8 +436,8 @@ parse_flag: intptr = &options->compression; goto parse_flag; - case oKeepAlives: - intptr = &options->keepalives; + case oTCPKeepAlive: + intptr = &options->tcp_keep_alive; goto parse_flag; case oNoHostAuthenticationForLocalhost: @@ -527,6 +543,8 @@ parse_string: goto parse_string; case oProxyCommand: + if (s == NULL) + fatal("%.200s line %d: Missing argument.", filename, linenum); charptr = &options->proxy_command; len = strspn(s, WHITESPACE "="); if (*activep && *charptr == NULL) @@ -664,7 +682,7 @@ parse_int: fatal("%.200s line %d: Badly formatted port number.", filename, linenum); if (*activep) - add_local_forward(options, fwd_port, "socks4", 0); + add_local_forward(options, fwd_port, "socks", 0); break; case oClearAllForwardings: @@ -704,15 +722,68 @@ parse_int: *intptr = value; break; + case oAddressFamily: + arg = strdelim(&s); + intptr = &options->address_family; + if (strcasecmp(arg, "inet") == 0) + value = AF_INET; + else if (strcasecmp(arg, "inet6") == 0) + value = AF_INET6; + else if (strcasecmp(arg, "any") == 0) + value = AF_UNSPEC; + else + fatal("Unsupported AddressFamily \"%s\"", arg); + if (*activep && *intptr == -1) + *intptr = value; + break; + case oEnableSSHKeysign: intptr = &options->enable_ssh_keysign; goto parse_flag; + case oIdentitiesOnly: + intptr = &options->identities_only; + goto parse_flag; + + case oServerAliveInterval: + intptr = &options->server_alive_interval; + goto parse_time; + + case oServerAliveCountMax: + intptr = &options->server_alive_count_max; + goto parse_int; + + case oSendEnv: + while ((arg = strdelim(&s)) != NULL && *arg != '\0') { + if (strchr(arg, '=') != NULL) + fatal("%s line %d: Invalid environment name.", + filename, linenum); + if (options->num_send_env >= MAX_SEND_ENV) + fatal("%s line %d: too many send env.", + filename, linenum); + options->send_env[options->num_send_env++] = + xstrdup(arg); + } + break; + + case oControlPath: + charptr = &options->control_path; + goto parse_string; + + case oControlMaster: + intptr = &options->control_master; + goto parse_yesnoask; + case oDeprecated: debug("%s line %d: Deprecated option \"%s\"", filename, linenum, keyword); return 0; + case oUnsupported: + error("%s line %d: Unsupported option \"%s\"", + filename, linenum, keyword); + return 0; + default: fatal("process_config_line: Unimplemented opcode %d", opcode); } @@ -733,7 +804,8 @@ parse_int: */ int -read_config_file(const char *filename, const char *host, Options *options) +read_config_file(const char *filename, const char *host, Options *options, + int checkperm) { FILE *f; char line[1024]; @@ -741,10 +813,19 @@ read_config_file(const char *filename, const char *host, Options *options) int bad_options = 0; /* Open the file. */ - f = fopen(filename, "r"); - if (!f) + if ((f = fopen(filename, "r")) == NULL) return 0; + if (checkperm) { + struct stat sb; + + if (fstat(fileno(f), &sb) == -1) + fatal("fstat %s: %s", filename, strerror(errno)); + if (((sb.st_uid != 0 && sb.st_uid != getuid()) || + (sb.st_mode & 022) != 0)) + fatal("Bad owner or permissions on %s", filename); + } + debug("Reading configuration data %.200s", filename); /* @@ -779,22 +860,15 @@ initialize_options(Options * options) memset(options, 'X', sizeof(*options)); options->forward_agent = -1; options->forward_x11 = -1; + options->forward_x11_trusted = -1; options->xauth_location = NULL; options->gateway_ports = -1; options->use_privileged_port = -1; - options->rhosts_authentication = -1; options->rsa_authentication = -1; options->pubkey_authentication = -1; options->challenge_response_authentication = -1; -#if defined(KRB4) || defined(KRB5) - options->kerberos_authentication = -1; -#endif -#if defined(AFS) || defined(KRB5) - options->kerberos_tgt_passing = -1; -#endif -#ifdef AFS - options->afs_token_passing = -1; -#endif + options->gss_authentication = -1; + options->gss_deleg_creds = -1; options->password_authentication = -1; options->kbd_interactive_authentication = -1; options->kbd_interactive_devices = NULL; @@ -804,10 +878,12 @@ initialize_options(Options * options) options->check_host_ip = -1; options->strict_host_key_checking = -1; options->compression = -1; - options->keepalives = -1; + options->tcp_keep_alive = -1; options->compression_level = -1; options->port = -1; + options->address_family = -1; options->connection_attempts = -1; + options->connection_timeout = -1; options->number_of_password_prompts = -1; options->cipher = -1; options->ciphers = NULL; @@ -833,8 +909,14 @@ initialize_options(Options * options) options->smartcard_device = NULL; options->enable_ssh_keysign = - 1; options->no_host_authentication_for_localhost = - 1; + options->identities_only = - 1; options->rekey_limit = - 1; options->verify_host_key_dns = -1; + options->server_alive_interval = -1; + options->server_alive_count_max = -1; + options->num_send_env = 0; + options->control_path = NULL; + options->control_master = -1; } /* @@ -851,32 +933,24 @@ fill_default_options(Options * options) options->forward_agent = 0; if (options->forward_x11 == -1) options->forward_x11 = 0; + if (options->forward_x11_trusted == -1) + options->forward_x11_trusted = 0; if (options->xauth_location == NULL) options->xauth_location = _PATH_XAUTH; if (options->gateway_ports == -1) options->gateway_ports = 0; if (options->use_privileged_port == -1) options->use_privileged_port = 0; - if (options->rhosts_authentication == -1) - options->rhosts_authentication = 0; if (options->rsa_authentication == -1) options->rsa_authentication = 1; if (options->pubkey_authentication == -1) options->pubkey_authentication = 1; if (options->challenge_response_authentication == -1) options->challenge_response_authentication = 1; -#if defined(KRB4) || defined(KRB5) - if (options->kerberos_authentication == -1) - options->kerberos_authentication = 1; -#endif -#if defined(AFS) || defined(KRB5) - if (options->kerberos_tgt_passing == -1) - options->kerberos_tgt_passing = 1; -#endif -#ifdef AFS - if (options->afs_token_passing == -1) - options->afs_token_passing = 1; -#endif + if (options->gss_authentication == -1) + options->gss_authentication = 0; + if (options->gss_deleg_creds == -1) + options->gss_deleg_creds = 0; if (options->password_authentication == -1) options->password_authentication = 1; if (options->kbd_interactive_authentication == -1) @@ -893,12 +967,14 @@ fill_default_options(Options * options) options->strict_host_key_checking = 2; /* 2 is default */ if (options->compression == -1) options->compression = 0; - if (options->keepalives == -1) - options->keepalives = 1; + if (options->tcp_keep_alive == -1) + options->tcp_keep_alive = 1; if (options->compression_level == -1) options->compression_level = 6; if (options->port == -1) options->port = 0; /* Filled in ssh_connect. */ + if (options->address_family == -1) + options->address_family = AF_UNSPEC; if (options->connection_attempts == -1) options->connection_attempts = 1; if (options->number_of_password_prompts == -1) @@ -949,12 +1025,20 @@ fill_default_options(Options * options) clear_forwardings(options); if (options->no_host_authentication_for_localhost == - 1) options->no_host_authentication_for_localhost = 0; + if (options->identities_only == -1) + options->identities_only = 0; if (options->enable_ssh_keysign == -1) options->enable_ssh_keysign = 0; if (options->rekey_limit == -1) options->rekey_limit = 0; if (options->verify_host_key_dns == -1) options->verify_host_key_dns = 0; + if (options->server_alive_interval == -1) + options->server_alive_interval = 0; + if (options->server_alive_count_max == -1) + options->server_alive_count_max = 3; + if (options->control_master == -1) + options->control_master = 0; /* options->proxy_command should not be set by default */ /* options->user will be set in the main program if appropriate */ /* options->hostname will be set in the main program if appropriate */