diff options
Diffstat (limited to 'crypto/openssh/readconf.c')
-rw-r--r-- | crypto/openssh/readconf.c | 131 |
1 files changed, 80 insertions, 51 deletions
diff --git a/crypto/openssh/readconf.c b/crypto/openssh/readconf.c index 0e271f7..8b810a1 100644 --- a/crypto/openssh/readconf.c +++ b/crypto/openssh/readconf.c @@ -1,4 +1,4 @@ -/* $OpenBSD: readconf.c,v 1.167 2008/06/26 11:46:31 grunk Exp $ */ +/* $OpenBSD: readconf.c,v 1.176 2009/02/12 03:00:56 djm Exp $ */ /* * Author: Tatu Ylonen <ylo@cs.hut.fi> * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland @@ -44,6 +44,7 @@ __RCSID("$FreeBSD$"); #include "buffer.h" #include "kex.h" #include "mac.h" +#include "version.h" /* Format of the configuration file: @@ -132,7 +133,7 @@ typedef enum { oServerAliveInterval, oServerAliveCountMax, oIdentitiesOnly, oSendEnv, oControlPath, oControlMaster, oHashKnownHosts, oTunnel, oTunnelDevice, oLocalCommand, oPermitLocalCommand, - oVisualHostKey, + oVisualHostKey, oZeroKnowledgePasswordAuthentication, oVersionAddendum, oDeprecated, oUnsupported } OpCodes; @@ -175,7 +176,7 @@ static struct { { "fallbacktorsh", oDeprecated }, { "usersh", oDeprecated }, { "identityfile", oIdentityFile }, - { "identityfile2", oIdentityFile }, /* alias */ + { "identityfile2", oIdentityFile }, /* obsolete */ { "identitiesonly", oIdentitiesOnly }, { "hostname", oHostName }, { "hostkeyalias", oHostKeyAlias }, @@ -191,8 +192,8 @@ static struct { { "host", oHost }, { "escapechar", oEscapeChar }, { "globalknownhostsfile", oGlobalKnownHostsFile }, - { "userknownhostsfile", oUserKnownHostsFile }, /* obsolete */ - { "globalknownhostsfile2", oGlobalKnownHostsFile2 }, + { "globalknownhostsfile2", oGlobalKnownHostsFile2 }, /* obsolete */ + { "userknownhostsfile", oUserKnownHostsFile }, { "userknownhostsfile2", oUserKnownHostsFile2 }, /* obsolete */ { "connectionattempts", oConnectionAttempts }, { "batchmode", oBatchMode }, @@ -231,6 +232,13 @@ static struct { { "localcommand", oLocalCommand }, { "permitlocalcommand", oPermitLocalCommand }, { "visualhostkey", oVisualHostKey }, +#ifdef JPAKE + { "zeroknowledgepasswordauthentication", + oZeroKnowledgePasswordAuthentication }, +#else + { "zeroknowledgepasswordauthentication", oUnsupported }, +#endif + { "versionaddendum", oVersionAddendum }, { NULL, oBadOption } }; @@ -265,10 +273,9 @@ add_local_forward(Options *options, const Forward *newfwd) fatal("Too many local forwards (max %d).", SSH_MAX_FORWARDS_PER_DIRECTION); fwd = &options->local_forwards[options->num_local_forwards++]; - fwd->listen_host = (newfwd->listen_host == NULL) ? - NULL : xstrdup(newfwd->listen_host); + fwd->listen_host = newfwd->listen_host; fwd->listen_port = newfwd->listen_port; - fwd->connect_host = xstrdup(newfwd->connect_host); + fwd->connect_host = newfwd->connect_host; fwd->connect_port = newfwd->connect_port; } @@ -286,10 +293,9 @@ add_remote_forward(Options *options, const Forward *newfwd) SSH_MAX_FORWARDS_PER_DIRECTION); fwd = &options->remote_forwards[options->num_remote_forwards++]; - fwd->listen_host = (newfwd->listen_host == NULL) ? - NULL : xstrdup(newfwd->listen_host); + fwd->listen_host = newfwd->listen_host; fwd->listen_port = newfwd->listen_port; - fwd->connect_host = xstrdup(newfwd->connect_host); + fwd->connect_host = newfwd->connect_host; fwd->connect_port = newfwd->connect_port; } @@ -428,6 +434,10 @@ parse_flag: intptr = &options->password_authentication; goto parse_flag; + case oZeroKnowledgePasswordAuthentication: + intptr = &options->zero_knowledge_password_authentication; + goto parse_flag; + case oKbdInteractiveAuthentication: intptr = &options->kbd_interactive_authentication; goto parse_flag; @@ -722,56 +732,40 @@ parse_int: case oLocalForward: case oRemoteForward: + case oDynamicForward: arg = strdelim(&s); if (arg == NULL || *arg == '\0') fatal("%.200s line %d: Missing port argument.", filename, linenum); - arg2 = strdelim(&s); - if (arg2 == NULL || *arg2 == '\0') - fatal("%.200s line %d: Missing target argument.", - filename, linenum); - /* construct a string for parse_forward */ - snprintf(fwdarg, sizeof(fwdarg), "%s:%s", arg, arg2); + if (opcode == oLocalForward || + opcode == oRemoteForward) { + arg2 = strdelim(&s); + if (arg2 == NULL || *arg2 == '\0') + fatal("%.200s line %d: Missing target argument.", + filename, linenum); + + /* construct a string for parse_forward */ + snprintf(fwdarg, sizeof(fwdarg), "%s:%s", arg, arg2); + } else if (opcode == oDynamicForward) { + strlcpy(fwdarg, arg, sizeof(fwdarg)); + } - if (parse_forward(&fwd, fwdarg) == 0) + if (parse_forward(&fwd, fwdarg, + opcode == oDynamicForward ? 1 : 0, + opcode == oRemoteForward ? 1 : 0) == 0) fatal("%.200s line %d: Bad forwarding specification.", filename, linenum); if (*activep) { - if (opcode == oLocalForward) + if (opcode == oLocalForward || + opcode == oDynamicForward) add_local_forward(options, &fwd); else if (opcode == oRemoteForward) add_remote_forward(options, &fwd); } break; - case oDynamicForward: - arg = strdelim(&s); - if (!arg || *arg == '\0') - fatal("%.200s line %d: Missing port argument.", - filename, linenum); - memset(&fwd, '\0', sizeof(fwd)); - fwd.connect_host = "socks"; - fwd.listen_host = hpdelim(&arg); - if (fwd.listen_host == NULL || - strlen(fwd.listen_host) >= NI_MAXHOST) - fatal("%.200s line %d: Bad forwarding specification.", - filename, linenum); - if (arg) { - fwd.listen_port = a2port(arg); - fwd.listen_host = cleanhostname(fwd.listen_host); - } else { - fwd.listen_port = a2port(fwd.listen_host); - fwd.listen_host = NULL; - } - if (fwd.listen_port == 0) - fatal("%.200s line %d: Badly formatted port number.", - filename, linenum); - if (*activep) - add_local_forward(options, &fwd); - break; - case oClearAllForwardings: intptr = &options->clear_forwardings; goto parse_flag; @@ -982,7 +976,6 @@ read_config_file(const char *filename, const char *host, Options *options, int active, linenum; int bad_options = 0; - /* Open the file. */ if ((f = fopen(filename, "r")) == NULL) return 0; @@ -1095,6 +1088,7 @@ initialize_options(Options * options) options->local_command = NULL; options->permit_local_command = -1; options->visual_host_key = -1; + options->zero_knowledge_password_authentication = -1; } /* @@ -1231,6 +1225,8 @@ fill_default_options(Options * options) options->permit_local_command = 0; if (options->visual_host_key == -1) options->visual_host_key = 0; + if (options->zero_knowledge_password_authentication == -1) + options->zero_knowledge_password_authentication = 0; /* options->local_command should not be set by default */ /* options->proxy_command should not be set by default */ /* options->user will be set in the main program if appropriate */ @@ -1242,11 +1238,14 @@ fill_default_options(Options * options) /* * parse_forward * parses a string containing a port forwarding specification of the form: + * dynamicfwd == 0 * [listenhost:]listenport:connecthost:connectport + * dynamicfwd == 1 + * [listenhost:]listenport * returns number of arguments parsed or zero on error */ int -parse_forward(Forward *fwd, const char *fwdspec) +parse_forward(Forward *fwd, const char *fwdspec, int dynamicfwd, int remotefwd) { int i; char *p, *cp, *fwdarg[4]; @@ -1263,11 +1262,23 @@ parse_forward(Forward *fwd, const char *fwdspec) if ((fwdarg[i] = hpdelim(&cp)) == NULL) break; - /* Check for trailing garbage in 4-arg case*/ + /* Check for trailing garbage */ if (cp != NULL) i = 0; /* failure */ switch (i) { + case 1: + fwd->listen_host = NULL; + fwd->listen_port = a2port(fwdarg[0]); + fwd->connect_host = xstrdup("socks"); + break; + + case 2: + fwd->listen_host = xstrdup(cleanhostname(fwdarg[0])); + fwd->listen_port = a2port(fwdarg[1]); + fwd->connect_host = xstrdup("socks"); + break; + case 3: fwd->listen_host = NULL; fwd->listen_port = a2port(fwdarg[0]); @@ -1287,19 +1298,37 @@ parse_forward(Forward *fwd, const char *fwdspec) xfree(p); - if (fwd->listen_port == 0 || fwd->connect_port == 0) + if (dynamicfwd) { + if (!(i == 1 || i == 2)) + goto fail_free; + } else { + if (!(i == 3 || i == 4)) + goto fail_free; + if (fwd->connect_port <= 0) + goto fail_free; + } + + if (fwd->listen_port < 0 || (!remotefwd && fwd->listen_port == 0)) goto fail_free; if (fwd->connect_host != NULL && strlen(fwd->connect_host) >= NI_MAXHOST) goto fail_free; + if (fwd->listen_host != NULL && + strlen(fwd->listen_host) >= NI_MAXHOST) + goto fail_free; + return (i); fail_free: - if (fwd->connect_host != NULL) + if (fwd->connect_host != NULL) { xfree(fwd->connect_host); - if (fwd->listen_host != NULL) + fwd->connect_host = NULL; + } + if (fwd->listen_host != NULL) { xfree(fwd->listen_host); + fwd->listen_host = NULL; + } return (0); } |