/*
* parse_forward
* parses a string containing a port forwarding specification of the form:
* [listenhost:]listenport:connecthost:connectport
* returns number of arguments parsed or zero on error
*/
int
parse_forward(Forward *fwd, const char *fwdspec)
{
int i;
char *p, *cp, *fwdarg[4];
memset(fwd, '\0', sizeof(*fwd));
cp = p = xstrdup(fwdspec);
/* skip leading spaces */
while (isspace(*cp))
cp++;
for (i = 0; i < 4; ++i)
if ((fwdarg[i] = hpdelim(&cp)) == NULL)
break;
/* Check for trailing garbage in 4-arg case*/
if (cp != NULL)
i = 0; /* failure */
switch (i) {
case 3:
fwd->listen_host = NULL;
fwd->listen_port = a2port(fwdarg[0]);
fwd->connect_host = xstrdup(cleanhostname(fwdarg[1]));
fwd->connect_port = a2port(fwdarg[2]);
break;
case 4:
fwd->listen_host = xstrdup(cleanhostname(fwdarg[0]));
fwd->listen_port = a2port(fwdarg[1]);
fwd->connect_host = xstrdup(cleanhostname(fwdarg[2]));
fwd->connect_port = a2port(fwdarg[3]);
break;
default:
i = 0; /* failure */
}
xfree(p);
if (fwd->listen_port == 0 && fwd->connect_port == 0)
goto fail_free;
if (fwd->connect_host != NULL &&
strlen(fwd->connect_host) >= NI_MAXHOST)
goto fail_free;
return (i);
fail_free:
if (fwd->connect_host != NULL)
xfree(fwd->connect_host);
if (fwd->listen_host != NULL)
xfree(fwd->listen_host);
return (0);
}
void
tolocal(int argc, char **argv)
{
char *bp, *host, *src, *suser;
arglist alist;
int i;
memset(&alist, '\0', sizeof(alist));
alist.list = NULL;
for (i = 0; i < argc - 1; i++) {
if (!(src = colon(argv[i]))) { /* Local to local. */
freeargs(&alist);
addargs(&alist, "%s", _PATH_CP);
if (iamrecursive)
addargs(&alist, "-r");
if (pflag)
addargs(&alist, "-p");
addargs(&alist, "--");
addargs(&alist, "%s", argv[i]);
addargs(&alist, "%s", argv[argc-1]);
if (do_local_cmd(&alist))
++errs;
continue;
}
*src++ = 0;
if (*src == 0)
src = ".";
if ((host = strrchr(argv[i], '@')) == NULL) {
host = argv[i];
suser = NULL;
} else {
*host++ = 0;
suser = argv[i];
if (*suser == '\0')
suser = pwd->pw_name;
}
host = cleanhostname(host);
xasprintf(&bp, "%s -f %s%s",
cmd, *src == '-' ? "-- " : "", src);
if (do_cmd(host, suser, bp, &remin, &remout) < 0) {
free(bp);
++errs;
continue;
}
free(bp);
sink(1, argv + argc - 1);
(void) close(remin);
remin = remout = -1;
}
}
/*
* return 1 if access is granted, 0 if not.
* side effect: sets key option flags
*/
int
auth_parse_options(struct passwd *pw, char *opts, char *file, u_long linenum)
{
struct ssh *ssh = active_state; /* XXX */
const char *cp;
int i, r;
/* reset options */
auth_clear_options();
if (!opts)
return 1;
while (*opts && *opts != ' ' && *opts != '\t') {
if ((r = match_flag("cert-authority", 0, &opts, NULL)) != -1) {
key_is_cert_authority = r;
goto next_option;
}
if ((r = match_flag("restrict", 0, &opts, NULL)) != -1) {
auth_debug_add("Key is restricted.");
no_port_forwarding_flag = 1;
no_agent_forwarding_flag = 1;
no_x11_forwarding_flag = 1;
no_pty_flag = 1;
no_user_rc = 1;
goto next_option;
}
if ((r = match_flag("port-forwarding", 1, &opts,
"Port forwarding")) != -1) {
no_port_forwarding_flag = r != 1;
goto next_option;
}
if ((r = match_flag("agent-forwarding", 1, &opts,
"Agent forwarding")) != -1) {
no_agent_forwarding_flag = r != 1;
goto next_option;
}
if ((r = match_flag("x11-forwarding", 1, &opts,
"X11 forwarding")) != -1) {
no_x11_forwarding_flag = r != 1;
goto next_option;
}
if ((r = match_flag("pty", 1, &opts,
"PTY allocation")) != -1) {
no_pty_flag = r != 1;
goto next_option;
}
if ((r = match_flag("user-rc", 1, &opts,
"User rc execution")) != -1) {
no_user_rc = r != 1;
goto next_option;
}
cp = "command=\"";
if (strncasecmp(opts, cp, strlen(cp)) == 0) {
opts += strlen(cp);
free(forced_command);
forced_command = xmalloc(strlen(opts) + 1);
i = 0;
while (*opts) {
if (*opts == '"')
break;
if (*opts == '\\' && opts[1] == '"') {
opts += 2;
forced_command[i++] = '"';
continue;
}
forced_command[i++] = *opts++;
}
if (!*opts) {
debug("%.100s, line %lu: missing end quote",
file, linenum);
auth_debug_add("%.100s, line %lu: missing end quote",
file, linenum);
free(forced_command);
forced_command = NULL;
goto bad_option;
}
forced_command[i] = '\0';
auth_debug_add("Forced command.");
opts++;
goto next_option;
}
cp = "principals=\"";
if (strncasecmp(opts, cp, strlen(cp)) == 0) {
opts += strlen(cp);
free(authorized_principals);
authorized_principals = xmalloc(strlen(opts) + 1);
i = 0;
while (*opts) {
if (*opts == '"')
break;
if (*opts == '\\' && opts[1] == '"') {
opts += 2;
authorized_principals[i++] = '"';
continue;
}
authorized_principals[i++] = *opts++;
}
if (!*opts) {
debug("%.100s, line %lu: missing end quote",
file, linenum);
auth_debug_add("%.100s, line %lu: missing end quote",
file, linenum);
free(authorized_principals);
authorized_principals = NULL;
goto bad_option;
}
authorized_principals[i] = '\0';
auth_debug_add("principals: %.900s",
authorized_principals);
opts++;
goto next_option;
}
cp = "environment=\"";
if (strncasecmp(opts, cp, strlen(cp)) == 0) {
char *s;
struct envstring *new_envstring;
opts += strlen(cp);
s = xmalloc(strlen(opts) + 1);
i = 0;
while (*opts) {
if (*opts == '"')
break;
if (*opts == '\\' && opts[1] == '"') {
opts += 2;
s[i++] = '"';
continue;
}
s[i++] = *opts++;
}
if (!*opts) {
debug("%.100s, line %lu: missing end quote",
file, linenum);
auth_debug_add("%.100s, line %lu: missing end quote",
file, linenum);
free(s);
goto bad_option;
}
s[i] = '\0';
opts++;
if (options.permit_user_env) {
auth_debug_add("Adding to environment: "
"%.900s", s);
debug("Adding to environment: %.900s", s);
new_envstring = xcalloc(1,
sizeof(*new_envstring));
new_envstring->s = s;
new_envstring->next = custom_environment;
custom_environment = new_envstring;
s = NULL;
}
free(s);
goto next_option;
}
cp = "from=\"";
if (strncasecmp(opts, cp, strlen(cp)) == 0) {
const char *remote_ip = ssh_remote_ipaddr(ssh);
const char *remote_host = auth_get_canonical_hostname(
ssh, options.use_dns);
char *patterns = xmalloc(strlen(opts) + 1);
opts += strlen(cp);
i = 0;
while (*opts) {
if (*opts == '"')
break;
if (*opts == '\\' && opts[1] == '"') {
opts += 2;
patterns[i++] = '"';
continue;
}
patterns[i++] = *opts++;
}
if (!*opts) {
debug("%.100s, line %lu: missing end quote",
file, linenum);
auth_debug_add("%.100s, line %lu: missing end quote",
file, linenum);
free(patterns);
goto bad_option;
}
patterns[i] = '\0';
opts++;
switch (match_host_and_ip(remote_host, remote_ip,
patterns)) {
case 1:
free(patterns);
/* Host name matches. */
goto next_option;
case -1:
debug("%.100s, line %lu: invalid criteria",
file, linenum);
auth_debug_add("%.100s, line %lu: "
"invalid criteria", file, linenum);
/* FALLTHROUGH */
case 0:
free(patterns);
logit("Authentication tried for %.100s with "
"correct key but not from a permitted "
"host (host=%.200s, ip=%.200s).",
pw->pw_name, remote_host, remote_ip);
auth_debug_add("Your host '%.200s' is not "
"permitted to use this key for login.",
remote_host);
break;
}
/* deny access */
return 0;
}
cp = "permitopen=\"";
if (strncasecmp(opts, cp, strlen(cp)) == 0) {
char *host, *p;
int port;
char *patterns = xmalloc(strlen(opts) + 1);
opts += strlen(cp);
i = 0;
while (*opts) {
if (*opts == '"')
break;
if (*opts == '\\' && opts[1] == '"') {
opts += 2;
patterns[i++] = '"';
continue;
}
patterns[i++] = *opts++;
}
if (!*opts) {
debug("%.100s, line %lu: missing end quote",
file, linenum);
auth_debug_add("%.100s, line %lu: missing "
"end quote", file, linenum);
free(patterns);
goto bad_option;
}
patterns[i] = '\0';
opts++;
p = patterns;
/* XXX - add streamlocal support */
host = hpdelim(&p);
if (host == NULL || strlen(host) >= NI_MAXHOST) {
debug("%.100s, line %lu: Bad permitopen "
"specification <%.100s>", file, linenum,
patterns);
auth_debug_add("%.100s, line %lu: "
"Bad permitopen specification", file,
linenum);
free(patterns);
goto bad_option;
}
host = cleanhostname(host);
if (p == NULL || (port = permitopen_port(p)) < 0) {
debug("%.100s, line %lu: Bad permitopen port "
"<%.100s>", file, linenum, p ? p : "");
auth_debug_add("%.100s, line %lu: "
"Bad permitopen port", file, linenum);
free(patterns);
goto bad_option;
}
if ((options.allow_tcp_forwarding & FORWARD_LOCAL) != 0)
channel_add_permitted_opens(host, port);
free(patterns);
goto next_option;
}
cp = "tunnel=\"";
if (strncasecmp(opts, cp, strlen(cp)) == 0) {
char *tun = NULL;
opts += strlen(cp);
tun = xmalloc(strlen(opts) + 1);
i = 0;
while (*opts) {
if (*opts == '"')
break;
tun[i++] = *opts++;
}
if (!*opts) {
debug("%.100s, line %lu: missing end quote",
file, linenum);
auth_debug_add("%.100s, line %lu: missing end quote",
file, linenum);
free(tun);
forced_tun_device = -1;
goto bad_option;
}
tun[i] = '\0';
forced_tun_device = a2tun(tun, NULL);
free(tun);
if (forced_tun_device == SSH_TUNID_ERR) {
debug("%.100s, line %lu: invalid tun device",
file, linenum);
auth_debug_add("%.100s, line %lu: invalid tun device",
file, linenum);
forced_tun_device = -1;
goto bad_option;
}
auth_debug_add("Forced tun device: %d", forced_tun_device);
opts++;
goto next_option;
}
next_option:
/*
* Skip the comma, and move to the next option
* (or break out if there are no more).
*/
if (!*opts)
fatal("Bugs in auth-options.c option processing.");
if (*opts == ' ' || *opts == '\t')
break; /* End of options. */
if (*opts != ',')
goto bad_option;
opts++;
/* Process the next option. */
}
/* grant access */
return 1;
bad_option:
logit("Bad options in %.100s file, line %lu: %.50s",
file, linenum, opts);
auth_debug_add("Bad options in %.100s file, line %lu: %.50s",
file, linenum, opts);
/* deny access */
return 0;
}
/*
* 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, int dynamicfwd, int remotefwd)
{
int i;
char *p, *cp, *fwdarg[4];
memset(fwd, '\0', sizeof(*fwd));
cp = p = xstrdup(fwdspec);
/* skip leading spaces */
while (isspace(*cp))
cp++;
for (i = 0; i < 4; ++i)
if ((fwdarg[i] = hpdelim(&cp)) == NULL)
break;
/* 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]);
fwd->connect_host = xstrdup(cleanhostname(fwdarg[1]));
fwd->connect_port = a2port(fwdarg[2]);
break;
case 4:
fwd->listen_host = xstrdup(cleanhostname(fwdarg[0]));
fwd->listen_port = a2port(fwdarg[1]);
fwd->connect_host = xstrdup(cleanhostname(fwdarg[2]));
fwd->connect_port = a2port(fwdarg[3]);
break;
default:
i = 0; /* failure */
}
xfree(p);
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) {
xfree(fwd->connect_host);
fwd->connect_host = NULL;
}
if (fwd->listen_host != NULL) {
xfree(fwd->listen_host);
fwd->listen_host = NULL;
}
return (0);
}
void
toremote(char *targ, int argc, char **argv)
{
char *bp, *host, *src, *suser, *thost, *tuser, *arg;
arglist alist;
int i;
u_int j;
memset(&alist, '\0', sizeof(alist));
alist.list = NULL;
*targ++ = 0;
if (*targ == 0)
targ = ".";
arg = xstrdup(argv[argc - 1]);
if ((thost = strrchr(arg, '@'))) {
/* user@host */
*thost++ = 0;
tuser = arg;
if (*tuser == '\0')
tuser = NULL;
} else {
thost = arg;
tuser = NULL;
}
if (tuser != NULL && !okname(tuser)) {
free(arg);
return;
}
for (i = 0; i < argc - 1; i++) {
src = colon(argv[i]);
if (src && throughlocal) { /* extended remote to remote */
*src++ = 0;
if (*src == 0)
src = ".";
host = strrchr(argv[i], '@');
if (host) {
*host++ = 0;
host = cleanhostname(host);
suser = argv[i];
if (*suser == '\0')
suser = pwd->pw_name;
else if (!okname(suser))
continue;
} else {
host = cleanhostname(argv[i]);
suser = NULL;
}
xasprintf(&bp, "%s -f %s%s", cmd,
*src == '-' ? "-- " : "", src);
if (do_cmd(host, suser, bp, &remin, &remout) < 0)
exit(1);
free(bp);
host = cleanhostname(thost);
xasprintf(&bp, "%s -t %s%s", cmd,
*targ == '-' ? "-- " : "", targ);
if (do_cmd2(host, tuser, bp, remin, remout) < 0)
exit(1);
free(bp);
(void) close(remin);
(void) close(remout);
remin = remout = -1;
} else if (src) { /* standard remote to remote */
freeargs(&alist);
addargs(&alist, "%s", ssh_program);
addargs(&alist, "-x");
addargs(&alist, "-oClearAllForwardings=yes");
addargs(&alist, "-n");
for (j = 0; j < remote_remote_args.num; j++) {
addargs(&alist, "%s",
remote_remote_args.list[j]);
}
*src++ = 0;
if (*src == 0)
src = ".";
host = strrchr(argv[i], '@');
if (host) {
*host++ = 0;
host = cleanhostname(host);
suser = argv[i];
if (*suser == '\0')
suser = pwd->pw_name;
else if (!okname(suser))
continue;
addargs(&alist, "-l");
addargs(&alist, "%s", suser);
} else {
host = cleanhostname(argv[i]);
}
addargs(&alist, "--");
addargs(&alist, "%s", host);
addargs(&alist, "%s", cmd);
addargs(&alist, "%s", src);
addargs(&alist, "%s%s%s:%s",
tuser ? tuser : "", tuser ? "@" : "",
thost, targ);
if (do_local_cmd(&alist) != 0)
errs = 1;
} else { /* local to remote */
if (remin == -1) {
xasprintf(&bp, "%s -t %s%s", cmd,
*targ == '-' ? "-- " : "", targ);
host = cleanhostname(thost);
if (do_cmd(host, tuser, bp, &remin,
&remout) < 0)
exit(1);
if (response() < 0)
exit(1);
free(bp);
}
source(1, argv + i);
}
}
free(arg);
}
int
process_config_line(Options *options, const char *host,
char *line, const char *filename, int linenum,
int *activep)
{
char *s, **charptr, *endofnumber, *keyword, *arg, *arg2, fwdarg[256];
int opcode, *intptr, value, value2, scale;
long long orig, val64;
size_t len;
Forward fwd;
/* Strip trailing whitespace */
for (len = strlen(line) - 1; len > 0; len--) {
if (strchr(WHITESPACE, line[len]) == NULL)
break;
line[len] = '\0';
}
s = line;
/* Get the keyword. (Each line is supposed to begin with a keyword). */
if ((keyword = strdelim(&s)) == NULL)
return 0;
/* Ignore leading whitespace. */
if (*keyword == '\0')
keyword = strdelim(&s);
if (keyword == NULL || !*keyword || *keyword == '\n' || *keyword == '#')
return 0;
opcode = parse_token(keyword, filename, linenum);
switch (opcode) {
case oBadOption:
/* 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 (*activep && *intptr == -1)
*intptr = value;
break;
case oForwardAgent:
intptr = &options->forward_agent;
parse_flag:
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);
if (*activep && *intptr == -1)
*intptr = value;
break;
case oForwardX11:
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;
case oExitOnForwardFailure:
intptr = &options->exit_on_forward_failure;
goto parse_flag;
case oUsePrivilegedPort:
intptr = &options->use_privileged_port;
goto parse_flag;
case oPasswordAuthentication:
intptr = &options->password_authentication;
goto parse_flag;
case oKbdInteractiveAuthentication:
intptr = &options->kbd_interactive_authentication;
goto parse_flag;
case oKbdInteractiveDevices:
charptr = &options->kbd_interactive_devices;
goto parse_string;
case oPubkeyAuthentication:
intptr = &options->pubkey_authentication;
goto parse_flag;
case oRSAAuthentication:
intptr = &options->rsa_authentication;
goto parse_flag;
case oRhostsRSAAuthentication:
intptr = &options->rhosts_rsa_authentication;
goto parse_flag;
case oHostbasedAuthentication:
intptr = &options->hostbased_authentication;
goto parse_flag;
case oChallengeResponseAuthentication:
intptr = &options->challenge_response_authentication;
goto parse_flag;
case oGssAuthentication:
intptr = &options->gss_authentication;
goto parse_flag;
case oGssKeyEx:
intptr = &options->gss_keyex;
goto parse_flag;
case oGssDelegateCreds:
intptr = &options->gss_deleg_creds;
goto parse_flag;
case oGssTrustDns:
intptr = &options->gss_trust_dns;
goto parse_flag;
case oBatchMode:
intptr = &options->batch_mode;
goto parse_flag;
case oCheckHostIP:
intptr = &options->check_host_ip;
goto parse_flag;
case oVerifyHostKeyDNS:
intptr = &options->verify_host_key_dns;
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.",
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;
case oCompression:
intptr = &options->compression;
goto parse_flag;
case oTCPKeepAlive:
intptr = &options->tcp_keep_alive;
goto parse_flag;
case oNoHostAuthenticationForLocalhost:
intptr = &options->no_host_authentication_for_localhost;
goto parse_flag;
case oNumberOfPasswordPrompts:
intptr = &options->number_of_password_prompts;
goto parse_int;
case oCompressionLevel:
intptr = &options->compression_level;
goto parse_int;
case oRekeyLimit:
intptr = &options->rekey_limit;
arg = strdelim(&s);
if (!arg || *arg == '\0')
fatal("%.200s line %d: Missing argument.", filename, linenum);
if (arg[0] < '0' || arg[0] > '9')
fatal("%.200s line %d: Bad number.", filename, linenum);
orig = val64 = strtoll(arg, &endofnumber, 10);
if (arg == endofnumber)
fatal("%.200s line %d: Bad number.", filename, linenum);
switch (toupper(*endofnumber)) {
case '\0':
scale = 1;
break;
case 'K':
scale = 1<<10;
break;
case 'M':
scale = 1<<20;
break;
case 'G':
scale = 1<<30;
break;
default:
fatal("%.200s line %d: Invalid RekeyLimit suffix",
filename, linenum);
}
val64 *= scale;
/* detect integer wrap and too-large limits */
if ((val64 / scale) != orig || val64 > INT_MAX)
fatal("%.200s line %d: RekeyLimit too large",
filename, linenum);
if (val64 < 16)
fatal("%.200s line %d: RekeyLimit too small",
filename, linenum);
if (*activep && *intptr == -1)
*intptr = (int)val64;
break;
case oIdentityFile:
arg = strdelim(&s);
if (!arg || *arg == '\0')
fatal("%.200s line %d: Missing argument.", filename, linenum);
if (*activep) {
intptr = &options->num_identity_files;
if (*intptr >= SSH_MAX_IDENTITY_FILES)
fatal("%.200s line %d: Too many identity files specified (max %d).",
filename, linenum, SSH_MAX_IDENTITY_FILES);
charptr = &options->identity_files[*intptr];
*charptr = xstrdup(arg);
*intptr = *intptr + 1;
}
break;
case oXAuthLocation:
charptr=&options->xauth_location;
goto parse_string;
case oUser:
charptr = &options->user;
parse_string:
arg = strdelim(&s);
if (!arg || *arg == '\0')
fatal("%.200s line %d: Missing argument.", filename, linenum);
if (*activep && *charptr == NULL)
*charptr = xstrdup(arg);
break;
case oGlobalKnownHostsFile:
charptr = &options->system_hostfile;
goto parse_string;
case oUserKnownHostsFile:
charptr = &options->user_hostfile;
goto parse_string;
case oGlobalKnownHostsFile2:
charptr = &options->system_hostfile2;
goto parse_string;
case oUserKnownHostsFile2:
charptr = &options->user_hostfile2;
goto parse_string;
case oHostName:
charptr = &options->hostname;
goto parse_string;
case oHostKeyAlias:
charptr = &options->host_key_alias;
goto parse_string;
case oPreferredAuthentications:
charptr = &options->preferred_authentications;
goto parse_string;
case oBindAddress:
charptr = &options->bind_address;
goto parse_string;
case oSmartcardDevice:
charptr = &options->smartcard_device;
goto parse_string;
case oProxyCommand:
charptr = &options->proxy_command;
parse_command:
if (s == NULL)
fatal("%.200s line %d: Missing argument.", filename, linenum);
len = strspn(s, WHITESPACE "=");
if (*activep && *charptr == NULL)
*charptr = xstrdup(s + len);
return 0;
case oPort:
intptr = &options->port;
parse_int:
arg = strdelim(&s);
if (!arg || *arg == '\0')
fatal("%.200s line %d: Missing argument.", filename, linenum);
if (arg[0] < '0' || arg[0] > '9')
fatal("%.200s line %d: Bad number.", filename, linenum);
/* Octal, decimal, or hex format? */
value = strtol(arg, &endofnumber, 0);
if (arg == endofnumber)
fatal("%.200s line %d: Bad number.", filename, linenum);
if (*activep && *intptr == -1)
*intptr = value;
break;
case oConnectionAttempts:
intptr = &options->connection_attempts;
goto parse_int;
case oCipher:
intptr = &options->cipher;
arg = strdelim(&s);
if (!arg || *arg == '\0')
fatal("%.200s line %d: Missing argument.", filename, linenum);
value = cipher_number(arg);
if (value == -1)
fatal("%.200s line %d: Bad cipher '%s'.",
filename, linenum, arg ? arg : "<NONE>");
if (*activep && *intptr == -1)
*intptr = value;
break;
case oCiphers:
arg = strdelim(&s);
if (!arg || *arg == '\0')
fatal("%.200s line %d: Missing argument.", filename, linenum);
if (!ciphers_valid(arg))
fatal("%.200s line %d: Bad SSH2 cipher spec '%s'.",
filename, linenum, arg ? arg : "<NONE>");
if (*activep && options->ciphers == NULL)
options->ciphers = xstrdup(arg);
break;
case oMacs:
arg = strdelim(&s);
if (!arg || *arg == '\0')
fatal("%.200s line %d: Missing argument.", filename, linenum);
if (!mac_valid(arg))
fatal("%.200s line %d: Bad SSH2 Mac spec '%s'.",
filename, linenum, arg ? arg : "<NONE>");
if (*activep && options->macs == NULL)
options->macs = xstrdup(arg);
break;
case oHostKeyAlgorithms:
arg = strdelim(&s);
if (!arg || *arg == '\0')
fatal("%.200s line %d: Missing argument.", filename, linenum);
if (!key_names_valid2(arg))
fatal("%.200s line %d: Bad protocol 2 host key algorithms '%s'.",
filename, linenum, arg ? arg : "<NONE>");
if (*activep && options->hostkeyalgorithms == NULL)
options->hostkeyalgorithms = xstrdup(arg);
break;
case oProtocol:
intptr = &options->protocol;
arg = strdelim(&s);
if (!arg || *arg == '\0')
fatal("%.200s line %d: Missing argument.", filename, linenum);
value = proto_spec(arg);
if (value == SSH_PROTO_UNKNOWN)
fatal("%.200s line %d: Bad protocol spec '%s'.",
filename, linenum, arg ? arg : "<NONE>");
if (*activep && *intptr == SSH_PROTO_UNKNOWN)
*intptr = value;
break;
case oLogLevel:
intptr = (int *) &options->log_level;
arg = strdelim(&s);
value = log_level_number(arg);
if (value == SYSLOG_LEVEL_NOT_SET)
fatal("%.200s line %d: unsupported log level '%s'",
filename, linenum, arg ? arg : "<NONE>");
if (*activep && (LogLevel) *intptr == SYSLOG_LEVEL_NOT_SET)
*intptr = (LogLevel) value;
break;
case oLocalForward:
case oRemoteForward:
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 (parse_forward(&fwd, fwdarg) == 0)
fatal("%.200s line %d: Bad forwarding specification.",
filename, linenum);
if (*activep) {
if (opcode == oLocalForward)
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;
case oHost:
*activep = 0;
while ((arg = strdelim(&s)) != NULL && *arg != '\0')
if (match_pattern(host, arg)) {
debug("Applying options for %.100s", arg);
*activep = 1;
break;
}
/* Avoid garbage check below, as strdelim is done. */
return 0;
case oEscapeChar:
intptr = &options->escape_char;
arg = strdelim(&s);
if (!arg || *arg == '\0')
fatal("%.200s line %d: Missing argument.", filename, linenum);
if (arg[0] == '^' && arg[2] == 0 &&
(u_char) arg[1] >= 64 && (u_char) arg[1] < 128)
value = (u_char) arg[1] & 31;
else if (strlen(arg) == 1)
value = (u_char) arg[0];
else if (strcmp(arg, "none") == 0)
value = SSH_ESCAPECHAR_NONE;
else {
fatal("%.200s line %d: Bad escape character.",
filename, linenum);
/* NOTREACHED */
value = 0; /* Avoid compiler warning. */
}
if (*activep && *intptr == -1)
*intptr = value;
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;
case oEnableSSHKeysign:
intptr = &options->enable_ssh_keysign;
goto parse_flag;
case oIdentitiesOnly:
intptr = &options->identities_only;
goto parse_flag;
case oServerAliveInterval:
case oProtocolKeepAlives: /* Debian-specific compatibility alias */
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 (!*activep)
continue;
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;
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;
case oHashKnownHosts:
intptr = &options->hash_known_hosts;
goto parse_flag;
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;
case oTunnelDevice:
arg = strdelim(&s);
if (!arg || *arg == '\0')
fatal("%.200s line %d: Missing argument.", filename, linenum);
value = a2tun(arg, &value2);
if (value == SSH_TUNID_ERR)
fatal("%.200s line %d: Bad tun device.", filename, linenum);
if (*activep) {
options->tun_local = value;
options->tun_remote = value2;
}
break;
case oLocalCommand:
charptr = &options->local_command;
goto parse_command;
case oPermitLocalCommand:
intptr = &options->permit_local_command;
goto parse_flag;
case oSetupTimeOut:
intptr = &options->setuptimeout;
goto parse_int;
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);
}
/* Check that there is no garbage at end of line. */
if ((arg = strdelim(&s)) != NULL && *arg != '\0') {
fatal("%.200s line %d: garbage at end of line; \"%.200s\".",
filename, linenum, arg);
}
return 0;
}
int
process_server_config_line(ServerOptions *options, char *line,
const char *filename, int linenum, int *activep, const char *user,
const char *host, const char *address)
{
char *cp, **charptr, *arg, *p;
int cmdline = 0, *intptr, value, n;
SyslogFacility *log_facility_ptr;
LogLevel *log_level_ptr;
ServerOpCodes opcode;
int port;
u_int i, flags = 0;
size_t len;
cp = line;
if ((arg = strdelim(&cp)) == NULL)
return 0;
/* Ignore leading whitespace */
if (*arg == '\0')
arg = strdelim(&cp);
if (!arg || !*arg || *arg == '#')
return 0;
intptr = NULL;
charptr = NULL;
opcode = parse_token(arg, filename, linenum, &flags);
if (activep == NULL) { /* We are processing a command line directive */
cmdline = 1;
activep = &cmdline;
}
if (*activep && opcode != sMatch)
debug3("%s:%d setting %s %s", filename, linenum, arg, cp);
if (*activep == 0 && !(flags & SSHCFG_MATCH)) {
if (user == NULL) {
fatal("%s line %d: Directive '%s' is not allowed "
"within a Match block", filename, linenum, arg);
} else { /* this is a directive we have already processed */
while (arg)
arg = strdelim(&cp);
return 0;
}
}
switch (opcode) {
/* Portable-specific options */
case sUsePAM:
intptr = &options->use_pam;
goto parse_flag;
/* Standard Options */
case sBadOption:
return -1;
case sPort:
/* ignore ports from configfile if cmdline specifies ports */
if (options->ports_from_cmdline)
return 0;
if (options->listen_addrs != NULL)
fatal("%s line %d: ports must be specified before "
"ListenAddress.", filename, linenum);
if (options->num_ports >= MAX_PORTS)
fatal("%s line %d: too many ports.",
filename, linenum);
arg = strdelim(&cp);
if (!arg || *arg == '\0')
fatal("%s line %d: missing port number.",
filename, linenum);
options->ports[options->num_ports++] = a2port(arg);
if (options->ports[options->num_ports-1] <= 0)
fatal("%s line %d: Badly formatted port number.",
filename, linenum);
break;
case sServerKeyBits:
intptr = &options->server_key_bits;
parse_int:
arg = strdelim(&cp);
if (!arg || *arg == '\0')
fatal("%s line %d: missing integer value.",
filename, linenum);
value = atoi(arg);
if (*activep && *intptr == -1)
*intptr = value;
break;
case sLoginGraceTime:
intptr = &options->login_grace_time;
parse_time:
arg = strdelim(&cp);
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 sKeyRegenerationTime:
intptr = &options->key_regeneration_time;
goto parse_time;
case sListenAddress:
arg = strdelim(&cp);
if (arg == NULL || *arg == '\0')
fatal("%s line %d: missing address",
filename, linenum);
/* check for bare IPv6 address: no "[]" and 2 or more ":" */
if (strchr(arg, '[') == NULL && (p = strchr(arg, ':')) != NULL
&& strchr(p+1, ':') != NULL) {
add_listen_addr(options, arg, 0);
break;
}
p = hpdelim(&arg);
if (p == NULL)
fatal("%s line %d: bad address:port usage",
filename, linenum);
p = cleanhostname(p);
if (arg == NULL)
port = 0;
else if ((port = a2port(arg)) <= 0)
fatal("%s line %d: bad port number", filename, linenum);
add_listen_addr(options, p, port);
break;
case sAddressFamily:
arg = strdelim(&cp);
if (!arg || *arg == '\0')
fatal("%s line %d: missing address family.",
filename, linenum);
intptr = &options->address_family;
if (options->listen_addrs != NULL)
fatal("%s line %d: address family must be specified before "
"ListenAddress.", filename, linenum);
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("%s line %d: unsupported address family \"%s\".",
filename, linenum, arg);
if (*intptr == -1)
*intptr = value;
break;
case sHostKeyFile:
intptr = &options->num_host_key_files;
if (*intptr >= MAX_HOSTKEYS)
fatal("%s line %d: too many host keys specified (max %d).",
filename, linenum, MAX_HOSTKEYS);
charptr = &options->host_key_files[*intptr];
parse_filename:
arg = strdelim(&cp);
if (!arg || *arg == '\0')
fatal("%s line %d: missing file name.",
filename, linenum);
if (*activep && *charptr == NULL) {
*charptr = tilde_expand_filename(arg, getuid());
/* increase optional counter */
if (intptr != NULL)
*intptr = *intptr + 1;
}
break;
case sPidFile:
charptr = &options->pid_file;
goto parse_filename;
case sPermitRootLogin:
intptr = &options->permit_root_login;
arg = strdelim(&cp);
if (!arg || *arg == '\0')
fatal("%s line %d: missing yes/"
"without-password/forced-commands-only/no "
"argument.", filename, linenum);
value = 0; /* silence compiler */
if (strcmp(arg, "without-password") == 0)
value = PERMIT_NO_PASSWD;
else if (strcmp(arg, "forced-commands-only") == 0)
value = PERMIT_FORCED_ONLY;
else if (strcmp(arg, "yes") == 0)
value = PERMIT_YES;
else if (strcmp(arg, "no") == 0)
value = PERMIT_NO;
else
fatal("%s line %d: Bad yes/"
"without-password/forced-commands-only/no "
"argument: %s", filename, linenum, arg);
if (*activep && *intptr == -1)
*intptr = value;
break;
case sIgnoreRhosts:
intptr = &options->ignore_rhosts;
parse_flag:
arg = strdelim(&cp);
if (!arg || *arg == '\0')
fatal("%s line %d: missing yes/no argument.",
filename, linenum);
value = 0; /* silence compiler */
if (strcmp(arg, "yes") == 0)
value = 1;
else if (strcmp(arg, "no") == 0)
value = 0;
else
fatal("%s line %d: Bad yes/no argument: %s",
filename, linenum, arg);
if (*activep && *intptr == -1)
*intptr = value;
break;
case sIgnoreUserKnownHosts:
intptr = &options->ignore_user_known_hosts;
goto parse_flag;
case sRhostsRSAAuthentication:
intptr = &options->rhosts_rsa_authentication;
goto parse_flag;
case sHostbasedAuthentication:
intptr = &options->hostbased_authentication;
goto parse_flag;
case sHostbasedUsesNameFromPacketOnly:
intptr = &options->hostbased_uses_name_from_packet_only;
goto parse_flag;
case sRSAAuthentication:
intptr = &options->rsa_authentication;
goto parse_flag;
case sPubkeyAuthentication:
intptr = &options->pubkey_authentication;
goto parse_flag;
case sKerberosAuthentication:
intptr = &options->kerberos_authentication;
goto parse_flag;
case sKerberosOrLocalPasswd:
intptr = &options->kerberos_or_local_passwd;
goto parse_flag;
case sKerberosTicketCleanup:
intptr = &options->kerberos_ticket_cleanup;
goto parse_flag;
case sKerberosGetAFSToken:
intptr = &options->kerberos_get_afs_token;
goto parse_flag;
case sGssAuthentication:
intptr = &options->gss_authentication;
goto parse_flag;
case sGssKeyEx:
intptr = &options->gss_keyex;
goto parse_flag;
case sGssCleanupCreds:
intptr = &options->gss_cleanup_creds;
goto parse_flag;
case sGssStrictAcceptor:
intptr = &options->gss_strict_acceptor;
goto parse_flag;
case sGssStoreRekey:
intptr = &options->gss_store_rekey;
goto parse_flag;
case sPasswordAuthentication:
intptr = &options->password_authentication;
goto parse_flag;
case sZeroKnowledgePasswordAuthentication:
intptr = &options->zero_knowledge_password_authentication;
goto parse_flag;
case sKbdInteractiveAuthentication:
intptr = &options->kbd_interactive_authentication;
goto parse_flag;
case sChallengeResponseAuthentication:
intptr = &options->challenge_response_authentication;
goto parse_flag;
case sPrintMotd:
intptr = &options->print_motd;
goto parse_flag;
case sPrintLastLog:
intptr = &options->print_lastlog;
goto parse_flag;
case sX11Forwarding:
intptr = &options->x11_forwarding;
goto parse_flag;
case sX11DisplayOffset:
intptr = &options->x11_display_offset;
goto parse_int;
case sX11UseLocalhost:
intptr = &options->x11_use_localhost;
goto parse_flag;
case sXAuthLocation:
charptr = &options->xauth_location;
goto parse_filename;
case sStrictModes:
intptr = &options->strict_modes;
goto parse_flag;
case sTCPKeepAlive:
intptr = &options->tcp_keep_alive;
goto parse_flag;
case sEmptyPasswd:
intptr = &options->permit_empty_passwd;
goto parse_flag;
case sPermitUserEnvironment:
intptr = &options->permit_user_env;
goto parse_flag;
case sUseLogin:
intptr = &options->use_login;
goto parse_flag;
case sCompression:
intptr = &options->compression;
arg = strdelim(&cp);
if (!arg || *arg == '\0')
fatal("%s line %d: missing yes/no/delayed "
"argument.", filename, linenum);
value = 0; /* silence compiler */
if (strcmp(arg, "delayed") == 0)
value = COMP_DELAYED;
else if (strcmp(arg, "yes") == 0)
value = COMP_ZLIB;
else if (strcmp(arg, "no") == 0)
value = COMP_NONE;
else
fatal("%s line %d: Bad yes/no/delayed "
"argument: %s", filename, linenum, arg);
if (*intptr == -1)
*intptr = value;
break;
case sGatewayPorts:
intptr = &options->gateway_ports;
arg = strdelim(&cp);
if (!arg || *arg == '\0')
fatal("%s line %d: missing yes/no/clientspecified "
"argument.", filename, linenum);
value = 0; /* silence compiler */
if (strcmp(arg, "clientspecified") == 0)
value = 2;
else if (strcmp(arg, "yes") == 0)
value = 1;
else if (strcmp(arg, "no") == 0)
value = 0;
else
fatal("%s line %d: Bad yes/no/clientspecified "
"argument: %s", filename, linenum, arg);
if (*activep && *intptr == -1)
*intptr = value;
break;
case sUseDNS:
intptr = &options->use_dns;
goto parse_flag;
case sLogFacility:
log_facility_ptr = &options->log_facility;
arg = strdelim(&cp);
value = log_facility_number(arg);
if (value == SYSLOG_FACILITY_NOT_SET)
fatal("%.200s line %d: unsupported log facility '%s'",
filename, linenum, arg ? arg : "<NONE>");
if (*log_facility_ptr == -1)
*log_facility_ptr = (SyslogFacility) value;
break;
case sLogLevel:
log_level_ptr = &options->log_level;
arg = strdelim(&cp);
value = log_level_number(arg);
if (value == SYSLOG_LEVEL_NOT_SET)
fatal("%.200s line %d: unsupported log level '%s'",
filename, linenum, arg ? arg : "<NONE>");
if (*log_level_ptr == -1)
*log_level_ptr = (LogLevel) value;
break;
case sAllowTcpForwarding:
intptr = &options->allow_tcp_forwarding;
goto parse_flag;
case sAllowAgentForwarding:
intptr = &options->allow_agent_forwarding;
goto parse_flag;
case sUsePrivilegeSeparation:
intptr = &use_privsep;
goto parse_flag;
case sAllowUsers:
while ((arg = strdelim(&cp)) && *arg != '\0') {
if (options->num_allow_users >= MAX_ALLOW_USERS)
fatal("%s line %d: too many allow users.",
filename, linenum);
options->allow_users[options->num_allow_users++] =
xstrdup(arg);
}
break;
case sDenyUsers:
while ((arg = strdelim(&cp)) && *arg != '\0') {
if (options->num_deny_users >= MAX_DENY_USERS)
fatal("%s line %d: too many deny users.",
filename, linenum);
options->deny_users[options->num_deny_users++] =
xstrdup(arg);
}
break;
case sAllowGroups:
while ((arg = strdelim(&cp)) && *arg != '\0') {
if (options->num_allow_groups >= MAX_ALLOW_GROUPS)
fatal("%s line %d: too many allow groups.",
filename, linenum);
options->allow_groups[options->num_allow_groups++] =
xstrdup(arg);
}
break;
case sDenyGroups:
while ((arg = strdelim(&cp)) && *arg != '\0') {
if (options->num_deny_groups >= MAX_DENY_GROUPS)
fatal("%s line %d: too many deny groups.",
filename, linenum);
options->deny_groups[options->num_deny_groups++] = xstrdup(arg);
}
break;
case sCiphers:
arg = strdelim(&cp);
if (!arg || *arg == '\0')
fatal("%s line %d: Missing argument.", filename, linenum);
if (!ciphers_valid(arg))
fatal("%s line %d: Bad SSH2 cipher spec '%s'.",
filename, linenum, arg ? arg : "<NONE>");
if (options->ciphers == NULL)
options->ciphers = xstrdup(arg);
break;
case sMacs:
arg = strdelim(&cp);
if (!arg || *arg == '\0')
fatal("%s line %d: Missing argument.", filename, linenum);
if (!mac_valid(arg))
fatal("%s line %d: Bad SSH2 mac spec '%s'.",
filename, linenum, arg ? arg : "<NONE>");
if (options->macs == NULL)
options->macs = xstrdup(arg);
break;
case sProtocol:
intptr = &options->protocol;
arg = strdelim(&cp);
if (!arg || *arg == '\0')
fatal("%s line %d: Missing argument.", filename, linenum);
value = proto_spec(arg);
if (value == SSH_PROTO_UNKNOWN)
fatal("%s line %d: Bad protocol spec '%s'.",
filename, linenum, arg ? arg : "<NONE>");
if (*intptr == SSH_PROTO_UNKNOWN)
*intptr = value;
break;
case sSubsystem:
if (options->num_subsystems >= MAX_SUBSYSTEMS) {
fatal("%s line %d: too many subsystems defined.",
filename, linenum);
}
arg = strdelim(&cp);
if (!arg || *arg == '\0')
fatal("%s line %d: Missing subsystem name.",
filename, linenum);
if (!*activep) {
arg = strdelim(&cp);
break;
}
for (i = 0; i < options->num_subsystems; i++)
if (strcmp(arg, options->subsystem_name[i]) == 0)
fatal("%s line %d: Subsystem '%s' already defined.",
filename, linenum, arg);
options->subsystem_name[options->num_subsystems] = xstrdup(arg);
arg = strdelim(&cp);
if (!arg || *arg == '\0')
fatal("%s line %d: Missing subsystem command.",
filename, linenum);
options->subsystem_command[options->num_subsystems] = xstrdup(arg);
/* Collect arguments (separate to executable) */
p = xstrdup(arg);
len = strlen(p) + 1;
while ((arg = strdelim(&cp)) != NULL && *arg != '\0') {
len += 1 + strlen(arg);
p = xrealloc(p, 1, len);
strlcat(p, " ", len);
strlcat(p, arg, len);
}
options->subsystem_args[options->num_subsystems] = p;
options->num_subsystems++;
break;
case sMaxStartups:
arg = strdelim(&cp);
if (!arg || *arg == '\0')
fatal("%s line %d: Missing MaxStartups spec.",
filename, linenum);
if ((n = sscanf(arg, "%d:%d:%d",
&options->max_startups_begin,
&options->max_startups_rate,
&options->max_startups)) == 3) {
if (options->max_startups_begin >
options->max_startups ||
options->max_startups_rate > 100 ||
options->max_startups_rate < 1)
fatal("%s line %d: Illegal MaxStartups spec.",
filename, linenum);
} else if (n != 1)
fatal("%s line %d: Illegal MaxStartups spec.",
filename, linenum);
else
options->max_startups = options->max_startups_begin;
break;
case sMaxAuthTries:
intptr = &options->max_authtries;
goto parse_int;
case sMaxSessions:
intptr = &options->max_sessions;
goto parse_int;
case sBanner:
charptr = &options->banner;
goto parse_filename;
/*
* These options can contain %X options expanded at
* connect time, so that you can specify paths like:
*
* AuthorizedKeysFile /etc/ssh_keys/%u
*/
case sAuthorizedKeysFile:
case sAuthorizedKeysFile2:
charptr = (opcode == sAuthorizedKeysFile) ?
&options->authorized_keys_file :
&options->authorized_keys_file2;
goto parse_filename;
case sClientAliveInterval:
intptr = &options->client_alive_interval;
goto parse_time;
case sClientAliveCountMax:
intptr = &options->client_alive_count_max;
goto parse_int;
case sAcceptEnv:
while ((arg = strdelim(&cp)) && *arg != '\0') {
if (strchr(arg, '=') != NULL)
fatal("%s line %d: Invalid environment name.",
filename, linenum);
if (options->num_accept_env >= MAX_ACCEPT_ENV)
fatal("%s line %d: too many allow env.",
filename, linenum);
if (!*activep)
break;
options->accept_env[options->num_accept_env++] =
xstrdup(arg);
}
break;
case sPermitTunnel:
intptr = &options->permit_tun;
arg = strdelim(&cp);
if (!arg || *arg == '\0')
fatal("%s line %d: Missing yes/point-to-point/"
"ethernet/no argument.", filename, linenum);
value = -1;
for (i = 0; tunmode_desc[i].val != -1; i++)
if (strcmp(tunmode_desc[i].text, arg) == 0) {
value = tunmode_desc[i].val;
break;
}
if (value == -1)
fatal("%s line %d: Bad yes/point-to-point/ethernet/"
"no argument: %s", filename, linenum, arg);
if (*intptr == -1)
*intptr = value;
break;
case sMatch:
if (cmdline)
fatal("Match directive not supported as a command-line "
"option");
value = match_cfg_line(&cp, linenum, user, host, address);
if (value < 0)
fatal("%s line %d: Bad Match condition", filename,
linenum);
*activep = value;
break;
case sPermitOpen:
arg = strdelim(&cp);
if (!arg || *arg == '\0')
fatal("%s line %d: missing PermitOpen specification",
filename, linenum);
n = options->num_permitted_opens; /* modified later */
if (strcmp(arg, "any") == 0) {
if (*activep && n == -1) {
channel_clear_adm_permitted_opens();
options->num_permitted_opens = 0;
}
break;
}
if (*activep && n == -1)
channel_clear_adm_permitted_opens();
for (; arg != NULL && *arg != '\0'; arg = strdelim(&cp)) {
p = hpdelim(&arg);
if (p == NULL)
fatal("%s line %d: missing host in PermitOpen",
filename, linenum);
p = cleanhostname(p);
if (arg == NULL || (port = a2port(arg)) <= 0)
fatal("%s line %d: bad port number in "
"PermitOpen", filename, linenum);
if (*activep && n == -1)
options->num_permitted_opens =
channel_add_adm_permitted_opens(p, port);
}
break;
case sForceCommand:
if (cp == NULL)
fatal("%.200s line %d: Missing argument.", filename,
linenum);
len = strspn(cp, WHITESPACE);
if (*activep && options->adm_forced_command == NULL)
options->adm_forced_command = xstrdup(cp + len);
return 0;
case sChrootDirectory:
charptr = &options->chroot_directory;
arg = strdelim(&cp);
if (!arg || *arg == '\0')
fatal("%s line %d: missing file name.",
filename, linenum);
if (*activep && *charptr == NULL)
*charptr = xstrdup(arg);
break;
case sDeprecated:
logit("%s line %d: Deprecated option %s",
filename, linenum, arg);
while (arg)
arg = strdelim(&cp);
break;
case sUnsupported:
logit("%s line %d: Unsupported option %s",
filename, linenum, arg);
while (arg)
arg = strdelim(&cp);
break;
default:
fatal("%s line %d: Missing handler for opcode %s (%d)",
filename, linenum, arg, opcode);
}
if ((arg = strdelim(&cp)) != NULL && *arg != '\0')
fatal("%s line %d: garbage at end of line; \"%.200s\".",
filename, linenum, arg);
return 0;
}
/*
* return 1 if access is granted, 0 if not.
* side effect: sets key option flags
*/
int
auth_parse_options(struct passwd *pw, char *opts, char *file, u_long linenum)
{
const char *cp;
int i;
/* reset options */
auth_clear_options();
if (!opts)
return 1;
while (*opts && *opts != ' ' && *opts != '\t') {
cp = "no-port-forwarding";
if (strncasecmp(opts, cp, strlen(cp)) == 0) {
auth_debug_add("Port forwarding disabled.");
no_port_forwarding_flag = 1;
opts += strlen(cp);
goto next_option;
}
cp = "no-agent-forwarding";
if (strncasecmp(opts, cp, strlen(cp)) == 0) {
auth_debug_add("Agent forwarding disabled.");
no_agent_forwarding_flag = 1;
opts += strlen(cp);
goto next_option;
}
cp = "no-X11-forwarding";
if (strncasecmp(opts, cp, strlen(cp)) == 0) {
auth_debug_add("X11 forwarding disabled.");
no_x11_forwarding_flag = 1;
opts += strlen(cp);
goto next_option;
}
cp = "no-pty";
if (strncasecmp(opts, cp, strlen(cp)) == 0) {
auth_debug_add("Pty allocation disabled.");
no_pty_flag = 1;
opts += strlen(cp);
goto next_option;
}
cp = "command=\"";
if (strncasecmp(opts, cp, strlen(cp)) == 0) {
opts += strlen(cp);
forced_command = xmalloc(strlen(opts) + 1);
i = 0;
while (*opts) {
if (*opts == '"')
break;
if (*opts == '\\' && opts[1] == '"') {
opts += 2;
forced_command[i++] = '"';
continue;
}
forced_command[i++] = *opts++;
}
if (!*opts) {
debug("%.100s, line %lu: missing end quote",
file, linenum);
auth_debug_add("%.100s, line %lu: missing end quote",
file, linenum);
xfree(forced_command);
forced_command = NULL;
goto bad_option;
}
forced_command[i] = '\0';
auth_debug_add("Forced command: %.900s", forced_command);
opts++;
goto next_option;
}
cp = "environment=\"";
if (options.permit_user_env &&
strncasecmp(opts, cp, strlen(cp)) == 0) {
char *s;
struct envstring *new_envstring;
opts += strlen(cp);
s = xmalloc(strlen(opts) + 1);
i = 0;
while (*opts) {
if (*opts == '"')
break;
if (*opts == '\\' && opts[1] == '"') {
opts += 2;
s[i++] = '"';
continue;
}
s[i++] = *opts++;
}
if (!*opts) {
debug("%.100s, line %lu: missing end quote",
file, linenum);
auth_debug_add("%.100s, line %lu: missing end quote",
file, linenum);
xfree(s);
goto bad_option;
}
s[i] = '\0';
auth_debug_add("Adding to environment: %.900s", s);
debug("Adding to environment: %.900s", s);
opts++;
new_envstring = xmalloc(sizeof(struct envstring));
new_envstring->s = s;
new_envstring->next = custom_environment;
custom_environment = new_envstring;
goto next_option;
}
cp = "from=\"";
if (strncasecmp(opts, cp, strlen(cp)) == 0) {
const char *remote_ip = get_remote_ipaddr();
const char *remote_host = get_canonical_hostname(
options.use_dns);
char *patterns = xmalloc(strlen(opts) + 1);
opts += strlen(cp);
i = 0;
while (*opts) {
if (*opts == '"')
break;
if (*opts == '\\' && opts[1] == '"') {
opts += 2;
patterns[i++] = '"';
continue;
}
patterns[i++] = *opts++;
}
if (!*opts) {
debug("%.100s, line %lu: missing end quote",
file, linenum);
auth_debug_add("%.100s, line %lu: missing end quote",
file, linenum);
xfree(patterns);
goto bad_option;
}
patterns[i] = '\0';
opts++;
if (match_host_and_ip(remote_host, remote_ip,
patterns) != 1) {
xfree(patterns);
logit("Authentication tried for %.100s with "
"correct key but not from a permitted "
"host (host=%.200s, ip=%.200s).",
pw->pw_name, remote_host, remote_ip);
auth_debug_add("Your host '%.200s' is not "
"permitted to use this key for login.",
remote_host);
/* deny access */
return 0;
}
xfree(patterns);
/* Host name matches. */
goto next_option;
}
cp = "permitopen=\"";
if (strncasecmp(opts, cp, strlen(cp)) == 0) {
char *host, *p;
u_short port;
char *patterns = xmalloc(strlen(opts) + 1);
opts += strlen(cp);
i = 0;
while (*opts) {
if (*opts == '"')
break;
if (*opts == '\\' && opts[1] == '"') {
opts += 2;
patterns[i++] = '"';
continue;
}
patterns[i++] = *opts++;
}
if (!*opts) {
debug("%.100s, line %lu: missing end quote",
file, linenum);
auth_debug_add("%.100s, line %lu: missing "
"end quote", file, linenum);
xfree(patterns);
goto bad_option;
}
patterns[i] = '\0';
opts++;
p = patterns;
host = hpdelim(&p);
if (host == NULL || strlen(host) >= NI_MAXHOST) {
debug("%.100s, line %lu: Bad permitopen "
"specification <%.100s>", file, linenum,
patterns);
auth_debug_add("%.100s, line %lu: "
"Bad permitopen specification", file,
linenum);
xfree(patterns);
goto bad_option;
}
host = cleanhostname(host);
if (p == NULL || (port = a2port(p)) == 0) {
debug("%.100s, line %lu: Bad permitopen port "
"<%.100s>", file, linenum, p ? p : "");
auth_debug_add("%.100s, line %lu: "
"Bad permitopen port", file, linenum);
xfree(patterns);
goto bad_option;
}
if (options.allow_tcp_forwarding)
channel_add_permitted_opens(host, port);
xfree(patterns);
goto next_option;
}
cp = "tunnel=\"";
if (strncasecmp(opts, cp, strlen(cp)) == 0) {
char *tun = NULL;
opts += strlen(cp);
tun = xmalloc(strlen(opts) + 1);
i = 0;
while (*opts) {
if (*opts == '"')
break;
tun[i++] = *opts++;
}
if (!*opts) {
debug("%.100s, line %lu: missing end quote",
file, linenum);
auth_debug_add("%.100s, line %lu: missing end quote",
file, linenum);
xfree(tun);
forced_tun_device = -1;
goto bad_option;
}
tun[i] = '\0';
forced_tun_device = a2tun(tun, NULL);
xfree(tun);
if (forced_tun_device == SSH_TUNID_ERR) {
debug("%.100s, line %lu: invalid tun device",
file, linenum);
auth_debug_add("%.100s, line %lu: invalid tun device",
file, linenum);
forced_tun_device = -1;
goto bad_option;
}
auth_debug_add("Forced tun device: %d", forced_tun_device);
opts++;
goto next_option;
}
next_option:
/*
* Skip the comma, and move to the next option
* (or break out if there are no more).
*/
if (!*opts)
fatal("Bugs in auth-options.c option processing.");
if (*opts == ' ' || *opts == '\t')
break; /* End of options. */
if (*opts != ',')
goto bad_option;
opts++;
/* Process the next option. */
}
if (!use_privsep)
auth_debug_send();
/* grant access */
return 1;
bad_option:
logit("Bad options in %.100s file, line %lu: %.50s",
file, linenum, opts);
auth_debug_add("Bad options in %.100s file, line %lu: %.50s",
file, linenum, opts);
if (!use_privsep)
auth_debug_send();
/* deny access */
return 0;
}
void
toremote(char *targ, int argc, char **argv)
{
int i, len;
char *bp, *host, *src, *suser, *thost, *tuser, *arg;
arglist alist;
memset(&alist, '\0', sizeof(alist));
alist.list = NULL;
*targ++ = 0;
if (*targ == 0)
targ = ".";
arg = xstrdup(argv[argc - 1]);
if ((thost = strrchr(arg, '@'))) {
/* user@host */
*thost++ = 0;
tuser = arg;
if (*tuser == '\0')
tuser = NULL;
} else {
thost = arg;
tuser = NULL;
}
if (tuser != NULL && !okname(tuser)) {
xfree(arg);
return;
}
for (i = 0; i < argc - 1; i++) {
src = colon(argv[i]);
if (src) { /* remote to remote */
freeargs(&alist);
addargs(&alist, "%s", ssh_program);
if (verbose_mode)
addargs(&alist, "-v");
#if 0
// Disabled since dbclient won't understand them
// and scp works fine without them.
addargs(&alist, "-x");
addargs(&alist, "-oClearAllForwardings yes");
addargs(&alist, "-n");
#endif
*src++ = 0;
if (*src == 0)
src = ".";
host = strrchr(argv[i], '@');
if (host) {
*host++ = 0;
host = cleanhostname(host);
suser = argv[i];
if (*suser == '\0')
suser = pwd->pw_name;
else if (!okname(suser))
continue;
addargs(&alist, "-l");
addargs(&alist, "%s", suser);
} else {
host = cleanhostname(argv[i]);
}
addargs(&alist, "%s", host);
addargs(&alist, "%s", cmd);
addargs(&alist, "%s", src);
addargs(&alist, "%s%s%s:%s",
tuser ? tuser : "", tuser ? "@" : "",
thost, targ);
if (do_local_cmd(&alist) != 0)
errs = 1;
} else { /* local to remote */
if (remin == -1) {
len = strlen(targ) + CMDNEEDS + 20;
bp = xmalloc(len);
(void) snprintf(bp, len, "%s -t %s", cmd, targ);
host = cleanhostname(thost);
if (do_cmd(host, tuser, bp, &remin,
&remout, argc) < 0)
exit(1);
if (response() < 0)
exit(1);
(void) xfree(bp);
}
source(1, argv + i);
}
}
}
int
main(int argc, char **argv)
{
int in, out, ch;
pid_t sshpid;
char *host, *userhost, *cp, *file2;
int debug_level = 0, sshver = 2;
char *file1 = NULL, *sftp_server = NULL;
char *ssh_program = _PATH_SSH_PROGRAM, *sftp_direct = NULL;
LogLevel ll = SYSLOG_LEVEL_INFO;
arglist args;
extern int optind;
extern char *optarg;
__progname = get_progname(argv[0]);
args.list = NULL;
addargs(&args, "ssh"); /* overwritten with ssh_program */
addargs(&args, "-oFallBackToRsh no");
addargs(&args, "-oForwardX11 no");
addargs(&args, "-oForwardAgent no");
addargs(&args, "-oClearAllForwardings yes");
ll = SYSLOG_LEVEL_INFO;
infile = stdin; /* Read from STDIN unless changed by -b */
while ((ch = getopt(argc, argv, "1hvCo:s:S:b:B:F:P:R:")) != -1) {
switch (ch) {
case 'C':
addargs(&args, "-C");
break;
case 'v':
if (debug_level < 3) {
addargs(&args, "-v");
ll = SYSLOG_LEVEL_DEBUG1 + debug_level;
}
debug_level++;
break;
case 'F':
case 'o':
addargs(&args, "-%c%s", ch, optarg);
break;
case '1':
sshver = 1;
if (sftp_server == NULL)
sftp_server = _PATH_SFTP_SERVER;
break;
case 's':
sftp_server = optarg;
break;
case 'S':
ssh_program = optarg;
break;
case 'b':
if (infile == stdin) {
infile = fopen(optarg, "r");
if (infile == NULL)
fatal("%s (%s).", strerror(errno), optarg);
} else
fatal("Filename already specified.");
break;
case 'P':
sftp_direct = optarg;
break;
case 'B':
copy_buffer_len = strtol(optarg, &cp, 10);
if (copy_buffer_len == 0 || *cp != '\0')
fatal("Invalid buffer size \"%s\"", optarg);
break;
case 'R':
num_requests = strtol(optarg, &cp, 10);
if (num_requests == 0 || *cp != '\0')
fatal("Invalid number of requests \"%s\"",
optarg);
break;
case 'h':
default:
usage();
}
}
log_init(argv[0], ll, SYSLOG_FACILITY_USER, 1);
if (sftp_direct == NULL) {
if (optind == argc || argc > (optind + 2))
usage();
userhost = xstrdup(argv[optind]);
file2 = argv[optind+1];
if ((cp = colon(userhost)) != NULL) {
*cp++ = '\0';
file1 = cp;
}
if ((host = strchr(userhost, '@')) == NULL)
host = userhost;
else {
*host++ = '\0';
if (!userhost[0]) {
fprintf(stderr, "Missing username\n");
usage();
}
addargs(&args, "-l%s",userhost);
}
host = cleanhostname(host);
if (!*host) {
fprintf(stderr, "Missing hostname\n");
usage();
}
addargs(&args, "-oProtocol %d", sshver);
/* no subsystem if the server-spec contains a '/' */
if (sftp_server == NULL || strchr(sftp_server, '/') == NULL)
addargs(&args, "-s");
addargs(&args, "%s", host);
addargs(&args, "%s", (sftp_server != NULL ?
sftp_server : "sftp"));
args.list[0] = ssh_program;
fprintf(stderr, "Connecting to %s...\n", host);
connect_to_server(ssh_program, args.list, &in, &out,
&sshpid);
} else {
args.list = NULL;
addargs(&args, "sftp-server");
fprintf(stderr, "Attaching to %s...\n", sftp_direct);
connect_to_server(sftp_direct, args.list, &in, &out,
&sshpid);
}
interactive_loop(in, out, file1, file2);
#if !defined(USE_PIPES)
shutdown(in, SHUT_RDWR);
shutdown(out, SHUT_RDWR);
#endif
close(in);
close(out);
if (infile != stdin)
fclose(infile);
while (waitpid(sshpid, NULL, 0) == -1)
if (errno != EINTR)
fatal("Couldn't wait for ssh process: %s",
strerror(errno));
exit(0);
}
int
main(int argc, char *argv[])
{
struct psshfs_ctx pctx;
struct puffs_usermount *pu;
struct puffs_ops *pops;
struct psshfs_node *root = &pctx.psn_root;
struct puffs_node *pn_root;
puffs_framev_fdnotify_fn notfn;
struct vattr *rva;
mntoptparse_t mp;
char **sshargs;
char *user;
char *host;
char *path;
int mntflags, pflags, ch;
int detach;
int exportfs, refreshival, numconnections;
int nargs;
setprogname(argv[0]);
puffs_unmountonsignal(SIGINT, true);
puffs_unmountonsignal(SIGTERM, true);
if (argc < 3)
usage();
memset(&pctx, 0, sizeof(pctx));
mntflags = pflags = exportfs = nargs = 0;
numconnections = 1;
detach = 1;
refreshival = DEFAULTREFRESH;
notfn = puffs_framev_unmountonclose;
sshargs = NULL;
add_ssharg(&sshargs, &nargs, SSH_PATH);
add_ssharg(&sshargs, &nargs, "-axs");
add_ssharg(&sshargs, &nargs, "-oClearAllForwardings=yes");
while ((ch = getopt(argc, argv, "c:eF:g:o:O:pr:st:u:")) != -1) {
switch (ch) {
case 'c':
numconnections = atoi(optarg);
if (numconnections < 1 || numconnections > 2) {
fprintf(stderr, "%s: only 1 or 2 connections "
"permitted currently\n", getprogname());
usage();
/*NOTREACHED*/
}
break;
case 'e':
exportfs = 1;
break;
case 'F':
add_ssharg(&sshargs, &nargs, "-F");
add_ssharg(&sshargs, &nargs, optarg);
break;
case 'g':
pctx.domanglegid = 1;
pctx.manglegid = atoi(optarg);
if (pctx.manglegid == (gid_t)-1)
errx(1, "-1 not allowed for -g");
pctx.mygid = getegid();
break;
case 'O':
add_ssharg(&sshargs, &nargs, "-o");
add_ssharg(&sshargs, &nargs, optarg);
break;
case 'o':
mp = getmntopts(optarg, puffsmopts, &mntflags, &pflags);
if (mp == NULL)
err(1, "getmntopts");
freemntopts(mp);
break;
case 'p':
notfn = psshfs_notify;
break;
case 'r':
max_reads = atoi(optarg);
break;
case 's':
detach = 0;
break;
case 't':
refreshival = atoi(optarg);
if (refreshival < 0 && refreshival != -1)
errx(1, "invalid timeout %d", refreshival);
break;
case 'u':
pctx.domangleuid = 1;
pctx.mangleuid = atoi(optarg);
if (pctx.mangleuid == (uid_t)-1)
errx(1, "-1 not allowed for -u");
pctx.myuid = geteuid();
break;
default:
usage();
/*NOTREACHED*/
}
}
argc -= optind;
argv += optind;
if (pflags & PUFFS_FLAG_OPDUMP)
detach = 0;
pflags |= PUFFS_FLAG_BUILDPATH;
pflags |= PUFFS_KFLAG_WTCACHE | PUFFS_KFLAG_IAONDEMAND;
if (argc != 2)
usage();
PUFFSOP_INIT(pops);
PUFFSOP_SET(pops, psshfs, fs, unmount);
PUFFSOP_SETFSNOP(pops, sync); /* XXX */
PUFFSOP_SET(pops, psshfs, fs, statvfs);
PUFFSOP_SET(pops, psshfs, fs, nodetofh);
PUFFSOP_SET(pops, psshfs, fs, fhtonode);
PUFFSOP_SET(pops, psshfs, node, lookup);
PUFFSOP_SET(pops, psshfs, node, create);
PUFFSOP_SET(pops, psshfs, node, open);
PUFFSOP_SET(pops, psshfs, node, inactive);
PUFFSOP_SET(pops, psshfs, node, readdir);
PUFFSOP_SET(pops, psshfs, node, getattr);
PUFFSOP_SET(pops, psshfs, node, setattr);
PUFFSOP_SET(pops, psshfs, node, mkdir);
PUFFSOP_SET(pops, psshfs, node, remove);
PUFFSOP_SET(pops, psshfs, node, readlink);
PUFFSOP_SET(pops, psshfs, node, rmdir);
PUFFSOP_SET(pops, psshfs, node, symlink);
PUFFSOP_SET(pops, psshfs, node, rename);
PUFFSOP_SET(pops, psshfs, node, read);
PUFFSOP_SET(pops, psshfs, node, write);
PUFFSOP_SET(pops, psshfs, node, reclaim);
pu = puffs_init(pops, argv[0], "psshfs", &pctx, pflags);
if (pu == NULL)
err(1, "puffs_init");
pctx.mounttime = time(NULL);
pctx.refreshival = refreshival;
pctx.numconnections = numconnections;
user = strdup(argv[0]);
if ((host = strrchr(user, '@')) == NULL) {
host = user;
} else {
*host++ = '\0'; /* break at the '@' */
if (user[0] == '\0') {
fprintf(stderr, "Missing username\n");
usage();
}
add_ssharg(&sshargs, &nargs, "-l");
add_ssharg(&sshargs, &nargs, user);
}
if ((path = colon(host)) != NULL) {
*path++ = '\0'; /* break at the ':' */
pctx.mountpath = path;
} else {
pctx.mountpath = ".";
}
host = cleanhostname(host);
if (host[0] == '\0') {
fprintf(stderr, "Missing hostname\n");
usage();
}
add_ssharg(&sshargs, &nargs, host);
add_ssharg(&sshargs, &nargs, "sftp");
pctx.sshargs = sshargs;
pctx.nextino = 2;
memset(root, 0, sizeof(struct psshfs_node));
TAILQ_INIT(&root->pw);
pn_root = puffs_pn_new(pu, root);
if (pn_root == NULL)
return errno;
puffs_setroot(pu, pn_root);
puffs_framev_init(pu, psbuf_read, psbuf_write, psbuf_cmp, NULL, notfn);
signal(SIGHUP, takehup);
puffs_ml_setloopfn(pu, psshfs_loopfn);
if (pssh_connect(pu, PSSHFD_META) == -1)
err(1, "can't connect meta");
if (puffs_framev_addfd(pu, pctx.sshfd,
PUFFS_FBIO_READ | PUFFS_FBIO_WRITE) == -1)
err(1, "framebuf addfd meta");
if (numconnections == 2) {
if (pssh_connect(pu, PSSHFD_DATA) == -1)
err(1, "can't connect data");
if (puffs_framev_addfd(pu, pctx.sshfd_data,
PUFFS_FBIO_READ | PUFFS_FBIO_WRITE) == -1)
err(1, "framebuf addfd data");
} else {
pctx.sshfd_data = pctx.sshfd;
}
if (exportfs)
puffs_setfhsize(pu, sizeof(struct psshfs_fid),
PUFFS_FHFLAG_NFSV2 | PUFFS_FHFLAG_NFSV3);
rva = &pn_root->pn_va;
rva->va_fileid = pctx.nextino++;
/*
* For root link count, just guess something ridiculously high.
* Guessing too high has no known adverse effects, but fts(3)
* doesn't like too low values. This guess will be replaced
* with the real value when readdir is first called for
* the root directory.
*/
rva->va_nlink = 8811;
if (detach)
if (puffs_daemon(pu, 1, 1) == -1)
err(1, "puffs_daemon");
if (puffs_mount(pu, argv[1], mntflags, puffs_getroot(pu)) == -1)
err(1, "puffs_mount");
if (puffs_setblockingmode(pu, PUFFSDEV_NONBLOCK) == -1)
err(1, "setblockingmode");
if (puffs_mainloop(pu) == -1)
err(1, "mainloop");
puffs_exit(pu, 1);
return 0;
}
int
main(int argc, char **argv)
{
int in, out, ch, err;
char *host, *userhost, *cp, *file2 = NULL;
int debug_level = 0, sshver = 2;
char *file1 = NULL, *sftp_server = NULL;
char *ssh_program = _PATH_SSH_PROGRAM, *sftp_direct = NULL;
LogLevel ll = SYSLOG_LEVEL_INFO;
arglist args;
extern int optind;
extern char *optarg;
/* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
sanitise_stdfd();
__progname = ssh_get_progname(argv[0]);
memset(&args, '\0', sizeof(args));
args.list = NULL;
addargs(&args, ssh_program);
addargs(&args, "-oForwardX11 no");
addargs(&args, "-oForwardAgent no");
addargs(&args, "-oPermitLocalCommand no");
addargs(&args, "-oClearAllForwardings yes");
ll = SYSLOG_LEVEL_INFO;
infile = stdin;
while ((ch = getopt(argc, argv, "1hvCo:s:S:b:B:F:P:R:")) != -1) {
switch (ch) {
case 'C':
addargs(&args, "-C");
break;
case 'v':
if (debug_level < 3) {
addargs(&args, "-v");
ll = SYSLOG_LEVEL_DEBUG1 + debug_level;
}
debug_level++;
break;
case 'F':
case 'o':
addargs(&args, "-%c%s", ch, optarg);
break;
case '1':
sshver = 1;
if (sftp_server == NULL)
sftp_server = _PATH_SFTP_SERVER;
break;
case 's':
sftp_server = optarg;
break;
case 'S':
ssh_program = optarg;
replacearg(&args, 0, "%s", ssh_program);
break;
case 'b':
if (batchmode)
fatal("Batch file already specified.");
/* Allow "-" as stdin */
if (strcmp(optarg, "-") != 0 &&
(infile = fopen(optarg, "r")) == NULL)
fatal("%s (%s).", strerror(errno), optarg);
showprogress = 0;
batchmode = 1;
addargs(&args, "-obatchmode yes");
break;
case 'P':
sftp_direct = optarg;
break;
case 'B':
copy_buffer_len = strtol(optarg, &cp, 10);
if (copy_buffer_len == 0 || *cp != '\0')
fatal("Invalid buffer size \"%s\"", optarg);
break;
case 'R':
num_requests = strtol(optarg, &cp, 10);
if (num_requests == 0 || *cp != '\0')
fatal("Invalid number of requests \"%s\"",
optarg);
break;
case 'h':
default:
usage();
}
}
if (!isatty(STDERR_FILENO))
showprogress = 0;
log_init(argv[0], ll, SYSLOG_FACILITY_USER, 1);
if (sftp_direct == NULL) {
if (optind == argc || argc > (optind + 2))
usage();
userhost = xstrdup(argv[optind]);
file2 = argv[optind+1];
if ((host = strrchr(userhost, '@')) == NULL)
host = userhost;
else {
*host++ = '\0';
if (!userhost[0]) {
fprintf(stderr, "Missing username\n");
usage();
}
addargs(&args, "-l%s",userhost);
}
if ((cp = colon(host)) != NULL) {
*cp++ = '\0';
file1 = cp;
}
host = cleanhostname(host);
if (!*host) {
fprintf(stderr, "Missing hostname\n");
usage();
}
addargs(&args, "-oProtocol %d", sshver);
/* no subsystem if the server-spec contains a '/' */
if (sftp_server == NULL || strchr(sftp_server, '/') == NULL)
addargs(&args, "-s");
addargs(&args, "%s", host);
addargs(&args, "%s", (sftp_server != NULL ?
sftp_server : "sftp"));
if (!batchmode)
fprintf(stderr, "Connecting to %s...\n", host);
connect_to_server(ssh_program, args.list, &in, &out);
} else {
args.list = NULL;
addargs(&args, "sftp-server");
if (!batchmode)
fprintf(stderr, "Attaching to %s...\n", sftp_direct);
connect_to_server(sftp_direct, args.list, &in, &out);
}
freeargs(&args);
err = interactive_loop(in, out, file1, file2);
#if !defined(USE_PIPES)
shutdown(in, SHUT_RDWR);
shutdown(out, SHUT_RDWR);
#endif
close(in);
close(out);
if (batchmode)
fclose(infile);
while (waitpid(sshpid, NULL, 0) == -1)
if (errno != EINTR)
fatal("Couldn't wait for ssh process: %s",
strerror(errno));
exit(err == 0 ? 0 : 1);
}