diff options
author | des <des@FreeBSD.org> | 2014-01-31 13:12:02 +0000 |
---|---|---|
committer | des <des@FreeBSD.org> | 2014-01-31 13:12:02 +0000 |
commit | 7573e91b127f1c198210fd345d3ca198b598cfc6 (patch) | |
tree | d32fb61cec38c52314210c3459fd436685dacdba /crypto/openssh/readconf.c | |
parent | c692973c992c321bb10e631f572fab1500ae5b0e (diff) | |
parent | 45d0197dd79eceffb5bbc29f75199eb09af5a5f9 (diff) | |
download | FreeBSD-src-7573e91b127f1c198210fd345d3ca198b598cfc6.zip FreeBSD-src-7573e91b127f1c198210fd345d3ca198b598cfc6.tar.gz |
Upgrade to OpenSSH 6.5p1.
Diffstat (limited to 'crypto/openssh/readconf.c')
-rw-r--r-- | crypto/openssh/readconf.c | 580 |
1 files changed, 462 insertions, 118 deletions
diff --git a/crypto/openssh/readconf.c b/crypto/openssh/readconf.c index f946ca7..06eb033 100644 --- a/crypto/openssh/readconf.c +++ b/crypto/openssh/readconf.c @@ -1,4 +1,4 @@ -/* $OpenBSD: readconf.c,v 1.204 2013/06/10 19:19:44 dtucker Exp $ */ +/* $OpenBSD: readconf.c,v 1.215 2013/12/06 13:39:49 markus Exp $ */ /* $FreeBSD$ */ /* * Author: Tatu Ylonen <ylo@cs.hut.fi> @@ -20,6 +20,7 @@ __RCSID("$FreeBSD$"); #include <sys/stat.h> #include <sys/socket.h> #include <sys/sysctl.h> +#include <sys/wait.h> #include <netinet/in.h> #include <netinet/in_systm.h> @@ -27,7 +28,12 @@ __RCSID("$FreeBSD$"); #include <ctype.h> #include <errno.h> +#include <fcntl.h> #include <netdb.h> +#ifdef HAVE_PATHS_H +# include <paths.h> +#endif +#include <pwd.h> #include <signal.h> #include <stdarg.h> #include <stdio.h> @@ -50,6 +56,7 @@ __RCSID("$FreeBSD$"); #include "buffer.h" #include "kex.h" #include "mac.h" +#include "uidswap.h" #include "version.h" /* Format of the configuration file: @@ -119,12 +126,13 @@ __RCSID("$FreeBSD$"); typedef enum { oBadOption, + oHost, oMatch, oForwardAgent, oForwardX11, oForwardX11Trusted, oForwardX11Timeout, oGatewayPorts, oExitOnForwardFailure, oPasswordAuthentication, oRSAAuthentication, oChallengeResponseAuthentication, oXAuthLocation, oIdentityFile, oHostName, oPort, oCipher, oRemoteForward, oLocalForward, - oUser, oHost, oEscapeChar, oRhostsRSAAuthentication, oProxyCommand, + oUser, oEscapeChar, oRhostsRSAAuthentication, oProxyCommand, oGlobalKnownHostsFile, oUserKnownHostsFile, oConnectionAttempts, oBatchMode, oCheckHostIP, oStrictHostKeyChecking, oCompression, oCompressionLevel, oTCPKeepAlive, oNumberOfPasswordPrompts, @@ -141,7 +149,9 @@ typedef enum { oHashKnownHosts, oTunnel, oTunnelDevice, oLocalCommand, oPermitLocalCommand, oVisualHostKey, oUseRoaming, oZeroKnowledgePasswordAuthentication, - oKexAlgorithms, oIPQoS, oRequestTTY, oIgnoreUnknown, + oKexAlgorithms, oIPQoS, oRequestTTY, oIgnoreUnknown, oProxyUseFdpass, + oCanonicalDomains, oCanonicalizeHostname, oCanonicalizeMaxDots, + oCanonicalizeFallbackLocal, oCanonicalizePermittedCNAMEs, oIgnoredUnknownOption, oHPNDisabled, oHPNBufferSize, oTcpRcvBufPoll, oTcpRcvBuf, #ifdef NONE_CIPHER_ENABLED @@ -203,6 +213,7 @@ static struct { { "localforward", oLocalForward }, { "user", oUser }, { "host", oHost }, + { "match", oMatch }, { "escapechar", oEscapeChar }, { "globalknownhostsfile", oGlobalKnownHostsFile }, { "globalknownhostsfile2", oDeprecated }, @@ -258,6 +269,12 @@ static struct { { "kexalgorithms", oKexAlgorithms }, { "ipqos", oIPQoS }, { "requesttty", oRequestTTY }, + { "proxyusefdpass", oProxyUseFdpass }, + { "canonicaldomains", oCanonicalDomains }, + { "canonicalizefallbacklocal", oCanonicalizeFallbackLocal }, + { "canonicalizehostname", oCanonicalizeHostname }, + { "canonicalizemaxdots", oCanonicalizeMaxDots }, + { "canonicalizepermittedcnames", oCanonicalizePermittedCNAMEs }, { "ignoreunknown", oIgnoreUnknown }, { "hpndisabled", oHPNDisabled }, { "hpnbuffersize", oHPNBufferSize }, @@ -378,10 +395,243 @@ add_identity_file(Options *options, const char *dir, const char *filename, options->identity_files[options->num_identity_files++] = path; } +int +default_ssh_port(void) +{ + static int port; + struct servent *sp; + + if (port == 0) { + sp = getservbyname(SSH_SERVICE_NAME, "tcp"); + port = sp ? ntohs(sp->s_port) : SSH_DEFAULT_PORT; + } + return port; +} + /* - * Returns the number of the token pointed to by cp or oBadOption. + * Execute a command in a shell. + * Return its exit status or -1 on abnormal exit. + */ +static int +execute_in_shell(const char *cmd) +{ + char *shell, *command_string; + pid_t pid; + int devnull, status; + extern uid_t original_real_uid; + + if ((shell = getenv("SHELL")) == NULL) + shell = _PATH_BSHELL; + + /* + * Use "exec" to avoid "sh -c" processes on some platforms + * (e.g. Solaris) + */ + xasprintf(&command_string, "exec %s", cmd); + + /* Need this to redirect subprocess stdin/out */ + if ((devnull = open(_PATH_DEVNULL, O_RDWR)) == -1) + fatal("open(/dev/null): %s", strerror(errno)); + + debug("Executing command: '%.500s'", cmd); + + /* Fork and execute the command. */ + if ((pid = fork()) == 0) { + char *argv[4]; + + /* Child. Permanently give up superuser privileges. */ + permanently_drop_suid(original_real_uid); + + /* Redirect child stdin and stdout. Leave stderr */ + if (dup2(devnull, STDIN_FILENO) == -1) + fatal("dup2: %s", strerror(errno)); + if (dup2(devnull, STDOUT_FILENO) == -1) + fatal("dup2: %s", strerror(errno)); + if (devnull > STDERR_FILENO) + close(devnull); + closefrom(STDERR_FILENO + 1); + + argv[0] = shell; + argv[1] = "-c"; + argv[2] = command_string; + argv[3] = NULL; + + execv(argv[0], argv); + error("Unable to execute '%.100s': %s", cmd, strerror(errno)); + /* Die with signal to make this error apparent to parent. */ + signal(SIGTERM, SIG_DFL); + kill(getpid(), SIGTERM); + _exit(1); + } + /* Parent. */ + if (pid < 0) + fatal("%s: fork: %.100s", __func__, strerror(errno)); + + close(devnull); + free(command_string); + + while (waitpid(pid, &status, 0) == -1) { + if (errno != EINTR && errno != EAGAIN) + fatal("%s: waitpid: %s", __func__, strerror(errno)); + } + if (!WIFEXITED(status)) { + error("command '%.100s' exited abnormally", cmd); + return -1; + } + debug3("command returned status %d", WEXITSTATUS(status)); + return WEXITSTATUS(status); +} + +/* + * Parse and execute a Match directive. */ +static int +match_cfg_line(Options *options, char **condition, struct passwd *pw, + const char *host_arg, const char *filename, int linenum) +{ + char *arg, *attrib, *cmd, *cp = *condition, *host; + const char *ruser; + int r, port, result = 1, attributes = 0; + size_t len; + char thishost[NI_MAXHOST], shorthost[NI_MAXHOST], portstr[NI_MAXSERV]; + + /* + * Configuration is likely to be incomplete at this point so we + * must be prepared to use default values. + */ + port = options->port <= 0 ? default_ssh_port() : options->port; + ruser = options->user == NULL ? pw->pw_name : options->user; + if (options->hostname != NULL) { + /* NB. Please keep in sync with ssh.c:main() */ + host = percent_expand(options->hostname, + "h", host_arg, (char *)NULL); + } else + host = xstrdup(host_arg); + + debug3("checking match for '%s' host %s", cp, host); + while ((attrib = strdelim(&cp)) && *attrib != '\0') { + attributes++; + if (strcasecmp(attrib, "all") == 0) { + if (attributes != 1 || + ((arg = strdelim(&cp)) != NULL && *arg != '\0')) { + error("'all' cannot be combined with other " + "Match attributes"); + result = -1; + goto out; + } + *condition = cp; + result = 1; + goto out; + } + if ((arg = strdelim(&cp)) == NULL || *arg == '\0') { + error("Missing Match criteria for %s", attrib); + result = -1; + goto out; + } + len = strlen(arg); + if (strcasecmp(attrib, "host") == 0) { + if (match_hostname(host, arg, len) != 1) + result = 0; + else + debug("%.200s line %d: matched 'Host %.100s' ", + filename, linenum, host); + } else if (strcasecmp(attrib, "originalhost") == 0) { + if (match_hostname(host_arg, arg, len) != 1) + result = 0; + else + debug("%.200s line %d: matched " + "'OriginalHost %.100s' ", + filename, linenum, host_arg); + } else if (strcasecmp(attrib, "user") == 0) { + if (match_pattern_list(ruser, arg, len, 0) != 1) + result = 0; + else + debug("%.200s line %d: matched 'User %.100s' ", + filename, linenum, ruser); + } else if (strcasecmp(attrib, "localuser") == 0) { + if (match_pattern_list(pw->pw_name, arg, len, 0) != 1) + result = 0; + else + debug("%.200s line %d: matched " + "'LocalUser %.100s' ", + filename, linenum, pw->pw_name); + } else if (strcasecmp(attrib, "exec") == 0) { + if (gethostname(thishost, sizeof(thishost)) == -1) + fatal("gethostname: %s", strerror(errno)); + strlcpy(shorthost, thishost, sizeof(shorthost)); + shorthost[strcspn(thishost, ".")] = '\0'; + snprintf(portstr, sizeof(portstr), "%d", port); + + cmd = percent_expand(arg, + "L", shorthost, + "d", pw->pw_dir, + "h", host, + "l", thishost, + "n", host_arg, + "p", portstr, + "r", ruser, + "u", pw->pw_name, + (char *)NULL); + r = execute_in_shell(cmd); + if (r == -1) { + fatal("%.200s line %d: match exec '%.100s' " + "error", filename, linenum, cmd); + } else if (r == 0) { + debug("%.200s line %d: matched " + "'exec \"%.100s\"' ", + filename, linenum, cmd); + } else + result = 0; + free(cmd); + } else { + error("Unsupported Match attribute %s", attrib); + result = -1; + goto out; + } + } + if (attributes == 0) { + error("One or more attributes required for Match"); + result = -1; + goto out; + } + debug3("match %sfound", result ? "" : "not "); + *condition = cp; + out: + free(host); + return result; +} +/* Check and prepare a domain name: removes trailing '.' and lowercases */ +static void +valid_domain(char *name, const char *filename, int linenum) +{ + size_t i, l = strlen(name); + u_char c, last = '\0'; + + if (l == 0) + fatal("%s line %d: empty hostname suffix", filename, linenum); + if (!isalpha((u_char)name[0]) && !isdigit((u_char)name[0])) + fatal("%s line %d: hostname suffix \"%.100s\" " + "starts with invalid character", filename, linenum, name); + for (i = 0; i < l; i++) { + c = tolower((u_char)name[i]); + name[i] = (char)c; + if (last == '.' && c == '.') + fatal("%s line %d: hostname suffix \"%.100s\" contains " + "consecutive separators", filename, linenum, name); + if (c != '.' && c != '-' && !isalnum(c) && + c != '_') /* technically invalid, but common */ + fatal("%s line %d: hostname suffix \"%.100s\" contains " + "invalid characters", filename, linenum, name); + last = c; + } + if (name[l - 1] == '.') + name[l - 1] = '\0'; +} + +/* + * Returns the number of the token pointed to by cp or oBadOption. + */ static OpCodes parse_token(const char *cp, const char *filename, int linenum, const char *ignored_unknown) @@ -399,25 +649,93 @@ parse_token(const char *cp, const char *filename, int linenum, return oBadOption; } +/* Multistate option parsing */ +struct multistate { + char *key; + int value; +}; +static const struct multistate multistate_flag[] = { + { "true", 1 }, + { "false", 0 }, + { "yes", 1 }, + { "no", 0 }, + { NULL, -1 } +}; +static const struct multistate multistate_yesnoask[] = { + { "true", 1 }, + { "false", 0 }, + { "yes", 1 }, + { "no", 0 }, + { "ask", 2 }, + { NULL, -1 } +}; +static const struct multistate multistate_addressfamily[] = { + { "inet", AF_INET }, + { "inet6", AF_INET6 }, + { "any", AF_UNSPEC }, + { NULL, -1 } +}; +static const struct multistate multistate_controlmaster[] = { + { "true", SSHCTL_MASTER_YES }, + { "yes", SSHCTL_MASTER_YES }, + { "false", SSHCTL_MASTER_NO }, + { "no", SSHCTL_MASTER_NO }, + { "auto", SSHCTL_MASTER_AUTO }, + { "ask", SSHCTL_MASTER_ASK }, + { "autoask", SSHCTL_MASTER_AUTO_ASK }, + { NULL, -1 } +}; +static const struct multistate multistate_tunnel[] = { + { "ethernet", SSH_TUNMODE_ETHERNET }, + { "point-to-point", SSH_TUNMODE_POINTOPOINT }, + { "true", SSH_TUNMODE_DEFAULT }, + { "yes", SSH_TUNMODE_DEFAULT }, + { "false", SSH_TUNMODE_NO }, + { "no", SSH_TUNMODE_NO }, + { NULL, -1 } +}; +static const struct multistate multistate_requesttty[] = { + { "true", REQUEST_TTY_YES }, + { "yes", REQUEST_TTY_YES }, + { "false", REQUEST_TTY_NO }, + { "no", REQUEST_TTY_NO }, + { "force", REQUEST_TTY_FORCE }, + { "auto", REQUEST_TTY_AUTO }, + { NULL, -1 } +}; +static const struct multistate multistate_canonicalizehostname[] = { + { "true", SSH_CANONICALISE_YES }, + { "false", SSH_CANONICALISE_NO }, + { "yes", SSH_CANONICALISE_YES }, + { "no", SSH_CANONICALISE_NO }, + { "always", SSH_CANONICALISE_ALWAYS }, + { NULL, -1 } +}; + /* * Processes a single option line as used in the configuration files. This * only sets those values that have not already been set. */ #define WHITESPACE " \t\r\n" - int -process_config_line(Options *options, const char *host, - char *line, const char *filename, int linenum, - int *activep, int userconfig) +process_config_line(Options *options, struct passwd *pw, const char *host, + char *line, const char *filename, int linenum, int *activep, int userconfig) { char *s, **charptr, *endofnumber, *keyword, *arg, *arg2; char **cpptr, fwdarg[256]; u_int i, *uintptr, max_entries = 0; - int negated, opcode, *intptr, value, value2; + int negated, opcode, *intptr, value, value2, cmdline = 0; LogLevel *log_level_ptr; long long val64; size_t len; Forward fwd; + const struct multistate *multistate_ptr; + struct allowed_cname *cname; + + if (activep == NULL) { /* We are processing a command line directive */ + cmdline = 1; + activep = &cmdline; + } /* Strip trailing whitespace */ for (len = strlen(line) - 1; len > 0; len--) { @@ -436,8 +754,7 @@ process_config_line(Options *options, const char *host, if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#') return 0; /* Match lowercase keyword */ - for (i = 0; i < strlen(keyword); i++) - keyword[i] = tolower(keyword[i]); + lowercase(keyword); opcode = parse_token(keyword, filename, linenum, options->ignored_unknown); @@ -467,17 +784,23 @@ parse_time: case oForwardAgent: intptr = &options->forward_agent; -parse_flag: + parse_flag: + multistate_ptr = multistate_flag; + parse_multistate: arg = strdelim(&s); if (!arg || *arg == '\0') - fatal("%.200s line %d: Missing yes/no argument.", filename, linenum); - value = 0; /* To avoid compiler warning... */ - if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0) - value = 1; - else if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0) - value = 0; - else - fatal("%.200s line %d: Bad yes/no argument.", filename, linenum); + fatal("%s line %d: missing argument.", + filename, linenum); + value = -1; + for (i = 0; multistate_ptr[i].key != NULL; i++) { + if (strcasecmp(arg, multistate_ptr[i].key) == 0) { + value = multistate_ptr[i].value; + break; + } + } + if (value == -1) + fatal("%s line %d: unsupported option \"%s\".", + filename, linenum, arg); if (*activep && *intptr == -1) *intptr = value; break; @@ -560,27 +883,13 @@ parse_flag: case oVerifyHostKeyDNS: intptr = &options->verify_host_key_dns; - goto parse_yesnoask; + multistate_ptr = multistate_yesnoask; + goto parse_multistate; 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.", - filename, linenum); - value = 0; /* To avoid compiler warning... */ - if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0) - value = 1; - else if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0) - value = 0; - else if (strcmp(arg, "ask") == 0) - value = 2; - else - fatal("%.200s line %d: Bad yes/no/ask argument.", filename, linenum); - if (*activep && *intptr == -1) - *intptr = value; - break; + multistate_ptr = multistate_yesnoask; + goto parse_multistate; case oCompression: intptr = &options->compression; @@ -857,6 +1166,9 @@ parse_int: goto parse_flag; case oHost: + if (cmdline) + fatal("Host directive not supported as a command-line " + "option"); *activep = 0; arg2 = NULL; while ((arg = strdelim(&s)) != NULL && *arg != '\0') { @@ -883,6 +1195,18 @@ parse_int: /* Avoid garbage check below, as strdelim is done. */ return 0; + case oMatch: + if (cmdline) + fatal("Host directive not supported as a command-line " + "option"); + value = match_cfg_line(options, &s, pw, host, + filename, linenum); + if (value < 0) + fatal("%.200s line %d: Bad Match condition", filename, + linenum); + *activep = value; + break; + case oEscapeChar: intptr = &options->escape_char; arg = strdelim(&s); @@ -906,22 +1230,9 @@ parse_int: break; case oAddressFamily: - arg = strdelim(&s); - if (!arg || *arg == '\0') - fatal("%s line %d: missing address family.", - filename, linenum); 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; + multistate_ptr = multistate_addressfamily; + goto parse_multistate; case oEnableSSHKeysign: intptr = &options->enable_ssh_keysign; @@ -960,27 +1271,8 @@ parse_int: case oControlMaster: intptr = &options->control_master; - arg = strdelim(&s); - if (!arg || *arg == '\0') - fatal("%.200s line %d: Missing ControlMaster argument.", - filename, linenum); - value = 0; /* To avoid compiler warning... */ - if (strcmp(arg, "yes") == 0 || strcmp(arg, "true") == 0) - value = SSHCTL_MASTER_YES; - else if (strcmp(arg, "no") == 0 || strcmp(arg, "false") == 0) - value = SSHCTL_MASTER_NO; - else if (strcmp(arg, "auto") == 0) - value = SSHCTL_MASTER_AUTO; - else if (strcmp(arg, "ask") == 0) - value = SSHCTL_MASTER_ASK; - else if (strcmp(arg, "autoask") == 0) - value = SSHCTL_MASTER_AUTO_ASK; - else - fatal("%.200s line %d: Bad ControlMaster argument.", - filename, linenum); - if (*activep && *intptr == -1) - *intptr = value; - break; + multistate_ptr = multistate_controlmaster; + goto parse_multistate; case oControlPersist: /* no/false/yes/true, or a time spec */ @@ -1012,25 +1304,8 @@ parse_int: case oTunnel: intptr = &options->tun_open; - arg = strdelim(&s); - if (!arg || *arg == '\0') - fatal("%s line %d: Missing yes/point-to-point/" - "ethernet/no argument.", filename, linenum); - value = 0; /* silence compiler */ - if (strcasecmp(arg, "ethernet") == 0) - value = SSH_TUNMODE_ETHERNET; - else if (strcasecmp(arg, "point-to-point") == 0) - value = SSH_TUNMODE_POINTOPOINT; - else if (strcasecmp(arg, "yes") == 0) - value = SSH_TUNMODE_DEFAULT; - else if (strcasecmp(arg, "no") == 0) - value = SSH_TUNMODE_NO; - else - fatal("%s line %d: Bad yes/point-to-point/ethernet/" - "no argument: %s", filename, linenum, arg); - if (*activep) - *intptr = value; - break; + multistate_ptr = multistate_tunnel; + goto parse_multistate; case oTunnelDevice: arg = strdelim(&s); @@ -1079,24 +1354,9 @@ parse_int: goto parse_flag; case oRequestTTY: - arg = strdelim(&s); - if (!arg || *arg == '\0') - fatal("%s line %d: missing argument.", - filename, linenum); intptr = &options->request_tty; - if (strcasecmp(arg, "yes") == 0) - value = REQUEST_TTY_YES; - else if (strcasecmp(arg, "no") == 0) - value = REQUEST_TTY_NO; - else if (strcasecmp(arg, "force") == 0) - value = REQUEST_TTY_FORCE; - else if (strcasecmp(arg, "auto") == 0) - value = REQUEST_TTY_AUTO; - else - fatal("Unsupported RequestTTY \"%s\"", arg); - if (*activep && *intptr == -1) - *intptr = value; - break; + multistate_ptr = multistate_requesttty; + goto parse_multistate; case oHPNDisabled: intptr = &options->hpn_disabled; @@ -1159,6 +1419,66 @@ parse_int: charptr = &options->ignored_unknown; goto parse_string; + case oProxyUseFdpass: + intptr = &options->proxy_use_fdpass; + goto parse_flag; + + case oCanonicalDomains: + value = options->num_canonical_domains != 0; + while ((arg = strdelim(&s)) != NULL && *arg != '\0') { + valid_domain(arg, filename, linenum); + if (!*activep || value) + continue; + if (options->num_canonical_domains >= MAX_CANON_DOMAINS) + fatal("%s line %d: too many hostname suffixes.", + filename, linenum); + options->canonical_domains[ + options->num_canonical_domains++] = xstrdup(arg); + } + break; + + case oCanonicalizePermittedCNAMEs: + value = options->num_permitted_cnames != 0; + while ((arg = strdelim(&s)) != NULL && *arg != '\0') { + /* Either '*' for everything or 'list:list' */ + if (strcmp(arg, "*") == 0) + arg2 = arg; + else { + lowercase(arg); + if ((arg2 = strchr(arg, ':')) == NULL || + arg2[1] == '\0') { + fatal("%s line %d: " + "Invalid permitted CNAME \"%s\"", + filename, linenum, arg); + } + *arg2 = '\0'; + arg2++; + } + if (!*activep || value) + continue; + if (options->num_permitted_cnames >= MAX_CANON_DOMAINS) + fatal("%s line %d: too many permitted CNAMEs.", + filename, linenum); + cname = options->permitted_cnames + + options->num_permitted_cnames++; + cname->source_list = xstrdup(arg); + cname->target_list = xstrdup(arg2); + } + break; + + case oCanonicalizeHostname: + intptr = &options->canonicalize_hostname; + multistate_ptr = multistate_canonicalizehostname; + goto parse_multistate; + + case oCanonicalizeMaxDots: + intptr = &options->canonicalize_max_dots; + goto parse_int; + + case oCanonicalizeFallbackLocal: + intptr = &options->canonicalize_fallback_local; + goto parse_flag; + case oDeprecated: debug("%s line %d: Deprecated option \"%s\"", filename, linenum, keyword); @@ -1189,8 +1509,8 @@ parse_int: */ int -read_config_file(const char *filename, const char *host, Options *options, - int flags) +read_config_file(const char *filename, struct passwd *pw, const char *host, + Options *options, int flags) { FILE *f; char line[1024]; @@ -1221,8 +1541,8 @@ read_config_file(const char *filename, const char *host, Options *options, while (fgets(line, sizeof(line), f)) { /* Update line number counter. */ linenum++; - if (process_config_line(options, host, line, filename, linenum, - &active, flags & SSHCONF_USERCONF) != 0) + if (process_config_line(options, pw, host, line, filename, + linenum, &active, flags & SSHCONF_USERCONF) != 0) bad_options++; } fclose(f); @@ -1320,8 +1640,14 @@ initialize_options(Options * options) options->ip_qos_interactive = -1; options->ip_qos_bulk = -1; options->request_tty = -1; - options->version_addendum = NULL; + options->proxy_use_fdpass = -1; options->ignored_unknown = NULL; + options->num_canonical_domains = 0; + options->num_permitted_cnames = 0; + options->canonicalize_max_dots = -1; + options->canonicalize_fallback_local = -1; + options->canonicalize_hostname = -1; + options->version_addendum = NULL; options->hpn_disabled = -1; options->hpn_buffer_size = -1; options->tcp_rcv_buf_poll = -1; @@ -1417,6 +1743,8 @@ fill_default_options(Options * options) add_identity_file(options, "~/", _PATH_SSH_CLIENT_ID_ECDSA, 0); #endif + add_identity_file(options, "~/", + _PATH_SSH_CLIENT_ID_ED25519, 0); } } if (options->escape_char == -1) @@ -1487,8 +1815,24 @@ fill_default_options(Options * options) options->ip_qos_bulk = IPTOS_THROUGHPUT; if (options->request_tty == -1) options->request_tty = REQUEST_TTY_AUTO; - /* options->local_command should not be set by default */ - /* options->proxy_command should not be set by default */ + if (options->proxy_use_fdpass == -1) + options->proxy_use_fdpass = 0; + if (options->canonicalize_max_dots == -1) + options->canonicalize_max_dots = 1; + if (options->canonicalize_fallback_local == -1) + options->canonicalize_fallback_local = 1; + if (options->canonicalize_hostname == -1) + options->canonicalize_hostname = SSH_CANONICALISE_NO; +#define CLEAR_ON_NONE(v) \ + do { \ + if (v != NULL && strcasecmp(v, "none") == 0) { \ + free(v); \ + v = NULL; \ + } \ + } while(0) + CLEAR_ON_NONE(options->local_command); + CLEAR_ON_NONE(options->proxy_command); + CLEAR_ON_NONE(options->control_path); /* options->user will be set in the main program if appropriate */ /* options->hostname will be set in the main program if appropriate */ /* options->host_key_alias should not be set by default */ @@ -1547,7 +1891,7 @@ parse_forward(Forward *fwd, const char *fwdspec, int dynamicfwd, int remotefwd) cp = p = xstrdup(fwdspec); /* skip leading spaces */ - while (isspace(*cp)) + while (isspace((u_char)*cp)) cp++; for (i = 0; i < 4; ++i) |