#include <sys/types.h>
#include <stdlib.h>
#include <errno.h>
#include <paths.h>
#include <pwd.h>
#include <glob.h>
#include <signal.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <limits.h>
#include "xmalloc.h"
#include "ssh.h"
#include "ssh2.h"
#include "packet.h"
#include "kex.h"
#include "sshbuf.h"
#include "log.h"
#include "misc.h"
#include "servconf.h"
#include "compat.h"
#include "sshkey.h"
#include "hostfile.h"
#include "auth.h"
#include "pathnames.h"
#include "uidswap.h"
#include "auth-options.h"
#include "canohost.h"
#ifdef GSSAPI
#include "ssh-gss.h"
#endif
#include "monitor_wrap.h"
#include "authfile.h"
#include "match.h"
#include "ssherr.h"
#include "channels.h"
#include "session.h"
#include "sk-api.h"
extern ServerOptions options;
extern struct authmethod_cfg methodcfg_pubkey;
static char *
format_key(const struct sshkey *key)
{
char *ret, *fp = sshkey_fingerprint(key,
options.fingerprint_hash, SSH_FP_DEFAULT);
xasprintf(&ret, "%s %s", sshkey_type(key), fp);
free(fp);
return ret;
}
static int
userauth_pubkey(struct ssh *ssh, const char *method)
{
Authctxt *authctxt = ssh->authctxt;
struct passwd *pw = authctxt->pw;
struct sshbuf *b = NULL;
struct sshkey *key = NULL, *hostkey = NULL;
char *pkalg = NULL, *userstyle = NULL, *key_s = NULL, *ca_s = NULL;
u_char *pkblob = NULL, *sig = NULL, have_sig;
size_t blen, slen;
int hostbound, r, pktype;
int req_presence = 0, req_verify = 0, authenticated = 0;
struct sshauthopt *authopts = NULL;
struct sshkey_sig_details *sig_details = NULL;
hostbound = strcmp(method, "publickey-hostbound-v00@openssh.com") == 0;
if ((r = sshpkt_get_u8(ssh, &have_sig)) != 0 ||
(r = sshpkt_get_cstring(ssh, &pkalg, NULL)) != 0 ||
(r = sshpkt_get_string(ssh, &pkblob, &blen)) != 0)
fatal_fr(r, "parse %s packet", method);
if (hostbound) {
if ((r = sshpkt_getb_froms(ssh, &b)) != 0 ||
(r = sshkey_fromb(b, &hostkey)) != 0)
fatal_fr(r, "parse %s hostkey", method);
if (ssh->kex->initial_hostkey == NULL)
fatal_f("internal error: initial hostkey not recorded");
if (!sshkey_equal(hostkey, ssh->kex->initial_hostkey))
fatal_f("%s packet contained wrong host key", method);
sshbuf_free(b);
b = NULL;
}
if (log_level_get() >= SYSLOG_LEVEL_DEBUG2) {
char *keystring;
struct sshbuf *pkbuf;
if ((pkbuf = sshbuf_from(pkblob, blen)) == NULL)
fatal_f("sshbuf_from failed");
if ((keystring = sshbuf_dtob64_string(pkbuf, 0)) == NULL)
fatal_f("sshbuf_dtob64 failed");
debug2_f("%s user %s %s public key %s %s",
authctxt->valid ? "valid" : "invalid", authctxt->user,
have_sig ? "attempting" : "querying", pkalg, keystring);
sshbuf_free(pkbuf);
free(keystring);
}
pktype = sshkey_type_from_name(pkalg);
if (pktype == KEY_UNSPEC) {
verbose_f("unsupported public key algorithm: %s", pkalg);
goto done;
}
if ((r = sshkey_from_blob(pkblob, blen, &key)) != 0) {
error_fr(r, "parse key");
goto done;
}
if (key == NULL) {
error_f("cannot decode key: %s", pkalg);
goto done;
}
if (key->type != pktype || (sshkey_type_plain(pktype) == KEY_ECDSA &&
sshkey_ecdsa_nid_from_name(pkalg) != key->ecdsa_nid)) {
error_f("key type mismatch for decoded key "
"(received %s, expected %s)", sshkey_ssh_name(key), pkalg);
goto done;
}
if (auth2_key_already_used(authctxt, key)) {
logit("refusing previously-used %s key", sshkey_type(key));
goto done;
}
if (match_pattern_list(pkalg, options.pubkey_accepted_algos, 0) != 1) {
logit_f("signature algorithm %s not in "
"PubkeyAcceptedAlgorithms", pkalg);
goto done;
}
if ((r = sshkey_check_cert_sigtype(key,
options.ca_sign_algorithms)) != 0) {
logit_fr(r, "certificate signature algorithm %s",
(key->cert == NULL || key->cert->signature_type == NULL) ?
"(null)" : key->cert->signature_type);
goto done;
}
if ((r = sshkey_check_rsa_length(key,
options.required_rsa_size)) != 0) {
logit_r(r, "refusing %s key", sshkey_type(key));
goto done;
}
key_s = format_key(key);
if (sshkey_is_cert(key))
ca_s = format_key(key->cert->signature_key);
if (have_sig) {
debug3_f("%s have %s signature for %s%s%s",
method, pkalg, key_s,
ca_s == NULL ? "" : " CA ", ca_s == NULL ? "" : ca_s);
if ((r = sshpkt_get_string(ssh, &sig, &slen)) != 0 ||
(r = sshpkt_get_end(ssh)) != 0)
fatal_fr(r, "parse signature packet");
if ((b = sshbuf_new()) == NULL)
fatal_f("sshbuf_new failed");
if (ssh->compat & SSH_OLD_SESSIONID) {
if ((r = sshbuf_putb(b, ssh->kex->session_id)) != 0)
fatal_fr(r, "put old session id");
} else {
if ((r = sshbuf_put_stringb(b,
ssh->kex->session_id)) != 0)
fatal_fr(r, "put session id");
}
if (!authctxt->valid || authctxt->user == NULL) {
debug2_f("disabled because of invalid user");
goto done;
}
xasprintf(&userstyle, "%s%s%s", authctxt->user,
authctxt->style ? ":" : "",
authctxt->style ? authctxt->style : "");
if ((r = sshbuf_put_u8(b, SSH2_MSG_USERAUTH_REQUEST)) != 0 ||
(r = sshbuf_put_cstring(b, userstyle)) != 0 ||
(r = sshbuf_put_cstring(b, authctxt->service)) != 0 ||
(r = sshbuf_put_cstring(b, method)) != 0 ||
(r = sshbuf_put_u8(b, have_sig)) != 0 ||
(r = sshbuf_put_cstring(b, pkalg)) != 0 ||
(r = sshbuf_put_string(b, pkblob, blen)) != 0)
fatal_fr(r, "reconstruct %s packet", method);
if (hostbound &&
(r = sshkey_puts(ssh->kex->initial_hostkey, b)) != 0)
fatal_fr(r, "reconstruct %s packet", method);
#ifdef DEBUG_PK
sshbuf_dump(b, stderr);
#endif
authenticated = 0;
if (mm_user_key_allowed(ssh, pw, key, 1, &authopts) &&
mm_sshkey_verify(key, sig, slen,
sshbuf_ptr(b), sshbuf_len(b),
(ssh->compat & SSH_BUG_SIGTYPE) == 0 ? pkalg : NULL,
ssh->compat, &sig_details) == 0) {
authenticated = 1;
}
if (authenticated == 1 && sig_details != NULL) {
auth2_record_info(authctxt, "signature count = %u",
sig_details->sk_counter);
debug_f("sk_counter = %u, sk_flags = 0x%02x",
sig_details->sk_counter, sig_details->sk_flags);
req_presence = (options.pubkey_auth_options &
PUBKEYAUTH_TOUCH_REQUIRED) ||
!authopts->no_require_user_presence;
if (req_presence && (sig_details->sk_flags &
SSH_SK_USER_PRESENCE_REQD) == 0) {
error("public key %s signature for %s%s from "
"%.128s port %d rejected: user presence "
"(authenticator touch) requirement "
"not met ", key_s,
authctxt->valid ? "" : "invalid user ",
authctxt->user, ssh_remote_ipaddr(ssh),
ssh_remote_port(ssh));
authenticated = 0;
goto done;
}
req_verify = (options.pubkey_auth_options &
PUBKEYAUTH_VERIFY_REQUIRED) ||
authopts->require_verify;
if (req_verify && (sig_details->sk_flags &
SSH_SK_USER_VERIFICATION_REQD) == 0) {
error("public key %s signature for %s%s from "
"%.128s port %d rejected: user "
"verification requirement not met ", key_s,
authctxt->valid ? "" : "invalid user ",
authctxt->user, ssh_remote_ipaddr(ssh),
ssh_remote_port(ssh));
authenticated = 0;
goto done;
}
}
auth2_record_key(authctxt, authenticated, key);
} else {
debug_f("%s test pkalg %s pkblob %s%s%s", method, pkalg, key_s,
ca_s == NULL ? "" : " CA ", ca_s == NULL ? "" : ca_s);
if ((r = sshpkt_get_end(ssh)) != 0)
fatal_fr(r, "parse packet");
if (!authctxt->valid || authctxt->user == NULL) {
debug2_f("disabled because of invalid user");
goto done;
}
if (mm_user_key_allowed(ssh, pw, key, 0, NULL)) {
if ((r = sshpkt_start(ssh, SSH2_MSG_USERAUTH_PK_OK))
!= 0 ||
(r = sshpkt_put_cstring(ssh, pkalg)) != 0 ||
(r = sshpkt_put_string(ssh, pkblob, blen)) != 0 ||
(r = sshpkt_send(ssh)) != 0 ||
(r = ssh_packet_write_wait(ssh)) != 0)
fatal_fr(r, "send packet");
authctxt->postponed = 1;
}
}
done:
if (authenticated == 1 && auth_activate_options(ssh, authopts) != 0) {
debug_f("key options inconsistent with existing");
authenticated = 0;
}
debug2_f("authenticated %d pkalg %s", authenticated, pkalg);
sshbuf_free(b);
sshauthopt_free(authopts);
sshkey_free(key);
sshkey_free(hostkey);
free(userstyle);
free(pkalg);
free(pkblob);
free(key_s);
free(ca_s);
free(sig);
sshkey_sig_details_free(sig_details);
return authenticated;
}
static int
match_principals_file(struct passwd *pw, char *file,
struct sshkey_cert *cert, struct sshauthopt **authoptsp)
{
FILE *f;
int r, success = 0;
size_t i;
glob_t gl;
struct sshauthopt *opts = NULL;
if (authoptsp != NULL)
*authoptsp = NULL;
temporarily_use_uid(pw);
r = glob(file, 0, NULL, &gl);
restore_uid();
if (r != 0) {
if (r != GLOB_NOMATCH) {
logit_f("glob \"%s\" failed", file);
}
return 0;
} else if (gl.gl_pathc > INT_MAX) {
fatal_f("too many glob results for \"%s\"", file);
} else if (gl.gl_pathc > 1) {
debug2_f("glob \"%s\" returned %zu matches", file,
gl.gl_pathc);
}
for (i = 0; !success && i < gl.gl_pathc; i++) {
temporarily_use_uid(pw);
debug("trying authorized principals file %s", file);
if ((f = auth_openprincipals(gl.gl_pathv[i], pw,
options.strict_modes)) == NULL) {
restore_uid();
continue;
}
success = auth_process_principals(f, gl.gl_pathv[i],
cert, &opts);
fclose(f);
restore_uid();
if (!success) {
sshauthopt_free(opts);
opts = NULL;
}
}
globfree(&gl);
if (success && authoptsp != NULL) {
*authoptsp = opts;
opts = NULL;
}
sshauthopt_free(opts);
return success;
}
static int
match_principals_command(struct passwd *user_pw, const struct sshkey *key,
const char *conn_id, const char *rdomain, struct sshauthopt **authoptsp)
{
struct passwd *runas_pw = NULL;
const struct sshkey_cert *cert = key->cert;
FILE *f = NULL;
int r, ok, found_principal = 0;
int i, ac = 0, uid_swapped = 0;
pid_t pid;
char *tmp, *username = NULL, *command = NULL, **av = NULL;
char *ca_fp = NULL, *key_fp = NULL, *catext = NULL, *keytext = NULL;
char serial_s[32], uidstr[32];
void (*osigchld)(int);
if (authoptsp != NULL)
*authoptsp = NULL;
if (options.authorized_principals_command == NULL)
return 0;
if (options.authorized_principals_command_user == NULL) {
error("No user for AuthorizedPrincipalsCommand specified, "
"skipping");
return 0;
}
osigchld = ssh_signal(SIGCHLD, SIG_DFL);
username = percent_expand(options.authorized_principals_command_user,
"u", user_pw->pw_name, (char *)NULL);
runas_pw = getpwnam(username);
if (runas_pw == NULL) {
error("AuthorizedPrincipalsCommandUser \"%s\" not found: %s",
username, strerror(errno));
goto out;
}
if (argv_split(options.authorized_principals_command,
&ac, &av, 0) != 0) {
error("AuthorizedPrincipalsCommand \"%s\" contains "
"invalid quotes", options.authorized_principals_command);
goto out;
}
if (ac == 0) {
error("AuthorizedPrincipalsCommand \"%s\" yielded no arguments",
options.authorized_principals_command);
goto out;
}
if ((ca_fp = sshkey_fingerprint(cert->signature_key,
options.fingerprint_hash, SSH_FP_DEFAULT)) == NULL) {
error_f("sshkey_fingerprint failed");
goto out;
}
if ((key_fp = sshkey_fingerprint(key,
options.fingerprint_hash, SSH_FP_DEFAULT)) == NULL) {
error_f("sshkey_fingerprint failed");
goto out;
}
if ((r = sshkey_to_base64(cert->signature_key, &catext)) != 0) {
error_fr(r, "sshkey_to_base64 failed");
goto out;
}
if ((r = sshkey_to_base64(key, &keytext)) != 0) {
error_fr(r, "sshkey_to_base64 failed");
goto out;
}
snprintf(serial_s, sizeof(serial_s), "%llu",
(unsigned long long)cert->serial);
snprintf(uidstr, sizeof(uidstr), "%llu",
(unsigned long long)user_pw->pw_uid);
for (i = 1; i < ac; i++) {
tmp = percent_expand(av[i],
"C", conn_id,
"D", rdomain,
"U", uidstr,
"u", user_pw->pw_name,
"h", user_pw->pw_dir,
"t", sshkey_ssh_name(key),
"T", sshkey_ssh_name(cert->signature_key),
"f", key_fp,
"F", ca_fp,
"k", keytext,
"K", catext,
"i", cert->key_id,
"s", serial_s,
(char *)NULL);
if (tmp == NULL)
fatal_f("percent_expand failed");
free(av[i]);
av[i] = tmp;
}
command = argv_assemble(ac, av);
if ((pid = subprocess("AuthorizedPrincipalsCommand", command,
ac, av, &f,
SSH_SUBPROCESS_STDOUT_CAPTURE|SSH_SUBPROCESS_STDERR_DISCARD,
runas_pw, temporarily_use_uid, restore_uid)) == 0)
goto out;
uid_swapped = 1;
temporarily_use_uid(runas_pw);
ok = auth_process_principals(f, "(command)", cert, authoptsp);
fclose(f);
f = NULL;
if (exited_cleanly(pid, "AuthorizedPrincipalsCommand", command, 0) != 0)
goto out;
found_principal = ok;
out:
if (f != NULL)
fclose(f);
ssh_signal(SIGCHLD, osigchld);
for (i = 0; i < ac; i++)
free(av[i]);
free(av);
if (uid_swapped)
restore_uid();
free(command);
free(username);
free(ca_fp);
free(key_fp);
free(catext);
free(keytext);
return found_principal;
}
static int
user_cert_trusted_ca(struct passwd *pw, struct sshkey *key,
const char *remote_ip, const char *remote_host,
const char *conn_id, const char *rdomain, struct sshauthopt **authoptsp)
{
char *ca_fp, *principals_file = NULL;
const char *reason;
struct sshauthopt *principals_opts = NULL, *cert_opts = NULL;
struct sshauthopt *final_opts = NULL;
int r, ret = 0, found_principal = 0, use_authorized_principals;
if (authoptsp != NULL)
*authoptsp = NULL;
if (!sshkey_is_cert(key) || options.trusted_user_ca_keys == NULL)
return 0;
if ((ca_fp = sshkey_fingerprint(key->cert->signature_key,
options.fingerprint_hash, SSH_FP_DEFAULT)) == NULL)
return 0;
if ((r = sshkey_in_file(key->cert->signature_key,
options.trusted_user_ca_keys, 1, 0)) != 0) {
debug2_fr(r, "CA %s %s is not listed in %s",
sshkey_type(key->cert->signature_key), ca_fp,
options.trusted_user_ca_keys);
goto out;
}
if ((principals_file = authorized_principals_file(pw)) != NULL) {
if (match_principals_file(pw, principals_file,
key->cert, &principals_opts))
found_principal = 1;
}
if (!found_principal && match_principals_command(pw, key,
conn_id, rdomain, &principals_opts))
found_principal = 1;
use_authorized_principals = principals_file != NULL ||
options.authorized_principals_command != NULL;
if (!found_principal && use_authorized_principals) {
reason = "Certificate does not contain an authorized principal";
goto fail_reason;
}
if (use_authorized_principals && principals_opts == NULL)
fatal_f("internal error: missing principals_opts");
if (sshkey_cert_check_authority_now(key, 0, 0,
use_authorized_principals ? NULL : pw->pw_name, &reason) != 0)
goto fail_reason;
if ((cert_opts = sshauthopt_from_cert(key)) == NULL) {
reason = "Invalid certificate options";
goto fail_reason;
}
if (auth_authorise_keyopts(pw, cert_opts, 0,
remote_ip, remote_host, "cert") != 0) {
reason = "Refused by certificate options";
goto fail_reason;
}
if (principals_opts == NULL) {
final_opts = cert_opts;
cert_opts = NULL;
} else {
if (auth_authorise_keyopts(pw, principals_opts, 0,
remote_ip, remote_host, "principals") != 0) {
reason = "Refused by certificate principals options";
goto fail_reason;
}
if ((final_opts = sshauthopt_merge(principals_opts,
cert_opts, &reason)) == NULL) {
fail_reason:
error("Refusing certificate ID \"%s\" serial=%llu "
"signed by %s CA %s: %s", key->cert->key_id,
(unsigned long long)key->cert->serial,
sshkey_type(key->cert->signature_key), ca_fp,
reason);
auth_debug_add("Refused Certificate ID \"%s\" "
"serial=%llu: %s", key->cert->key_id,
(unsigned long long)key->cert->serial, reason);
goto out;
}
}
verbose("Accepted certificate ID \"%s\" (serial %llu) signed by "
"%s CA %s via %s", key->cert->key_id,
(unsigned long long)key->cert->serial,
sshkey_type(key->cert->signature_key), ca_fp,
options.trusted_user_ca_keys);
if (authoptsp != NULL) {
*authoptsp = final_opts;
final_opts = NULL;
}
ret = 1;
out:
sshauthopt_free(principals_opts);
sshauthopt_free(cert_opts);
sshauthopt_free(final_opts);
free(principals_file);
free(ca_fp);
return ret;
}
static int
user_key_allowed2(struct passwd *pw, struct sshkey *key,
char *file, const char *remote_ip, const char *remote_host,
struct sshauthopt **authoptsp)
{
FILE *f;
int found_key = 0;
if (authoptsp != NULL)
*authoptsp = NULL;
temporarily_use_uid(pw);
debug("trying public key file %s", file);
if ((f = auth_openkeyfile(file, pw, options.strict_modes)) != NULL) {
found_key = auth_check_authkeys_file(pw, f, file,
key, remote_ip, remote_host, authoptsp);
fclose(f);
}
restore_uid();
return found_key;
}
static int
user_key_command_allowed2(struct passwd *user_pw, struct sshkey *key,
const char *remote_ip, const char *remote_host,
const char *conn_id, const char *rdomain, struct sshauthopt **authoptsp)
{
struct passwd *runas_pw = NULL;
FILE *f = NULL;
int r, ok, found_key = 0;
int i, uid_swapped = 0, ac = 0;
pid_t pid;
char *username = NULL, *key_fp = NULL, *keytext = NULL;
char uidstr[32], *tmp, *command = NULL, **av = NULL;
void (*osigchld)(int);
if (authoptsp != NULL)
*authoptsp = NULL;
if (options.authorized_keys_command == NULL)
return 0;
if (options.authorized_keys_command_user == NULL) {
error("No user for AuthorizedKeysCommand specified, skipping");
return 0;
}
osigchld = ssh_signal(SIGCHLD, SIG_DFL);
username = percent_expand(options.authorized_keys_command_user,
"u", user_pw->pw_name, (char *)NULL);
runas_pw = getpwnam(username);
if (runas_pw == NULL) {
error("AuthorizedKeysCommandUser \"%s\" not found: %s",
username, strerror(errno));
goto out;
}
if ((key_fp = sshkey_fingerprint(key, options.fingerprint_hash,
SSH_FP_DEFAULT)) == NULL) {
error_f("sshkey_fingerprint failed");
goto out;
}
if ((r = sshkey_to_base64(key, &keytext)) != 0) {
error_fr(r, "sshkey_to_base64 failed");
goto out;
}
if (argv_split(options.authorized_keys_command, &ac, &av, 0) != 0) {
error("AuthorizedKeysCommand \"%s\" contains invalid quotes",
options.authorized_keys_command);
goto out;
}
if (ac == 0) {
error("AuthorizedKeysCommand \"%s\" yielded no arguments",
options.authorized_keys_command);
goto out;
}
snprintf(uidstr, sizeof(uidstr), "%llu",
(unsigned long long)user_pw->pw_uid);
for (i = 1; i < ac; i++) {
tmp = percent_expand(av[i],
"C", conn_id,
"D", rdomain,
"U", uidstr,
"u", user_pw->pw_name,
"h", user_pw->pw_dir,
"t", sshkey_ssh_name(key),
"f", key_fp,
"k", keytext,
(char *)NULL);
if (tmp == NULL)
fatal_f("percent_expand failed");
free(av[i]);
av[i] = tmp;
}
command = argv_assemble(ac, av);
if (ac == 1) {
av = xreallocarray(av, ac + 2, sizeof(*av));
av[1] = xstrdup(user_pw->pw_name);
av[2] = NULL;
free(command);
xasprintf(&command, "%s %s", av[0], av[1]);
}
if ((pid = subprocess("AuthorizedKeysCommand", command,
ac, av, &f,
SSH_SUBPROCESS_STDOUT_CAPTURE|SSH_SUBPROCESS_STDERR_DISCARD,
runas_pw, temporarily_use_uid, restore_uid)) == 0)
goto out;
uid_swapped = 1;
temporarily_use_uid(runas_pw);
ok = auth_check_authkeys_file(user_pw, f,
options.authorized_keys_command, key, remote_ip,
remote_host, authoptsp);
fclose(f);
f = NULL;
if (exited_cleanly(pid, "AuthorizedKeysCommand", command, 0) != 0)
goto out;
found_key = ok;
out:
if (f != NULL)
fclose(f);
ssh_signal(SIGCHLD, osigchld);
for (i = 0; i < ac; i++)
free(av[i]);
free(av);
if (uid_swapped)
restore_uid();
free(command);
free(username);
free(key_fp);
free(keytext);
return found_key;
}
int
user_key_allowed(struct ssh *ssh, struct passwd *pw, struct sshkey *key,
int auth_attempt, struct sshauthopt **authoptsp)
{
u_int success = 0, i, j;
char *file = NULL, *conn_id;
struct sshauthopt *opts = NULL;
const char *rdomain, *remote_ip, *remote_host;
if (authoptsp != NULL)
*authoptsp = NULL;
if (auth_key_is_revoked(key))
return 0;
if (sshkey_is_cert(key) &&
auth_key_is_revoked(key->cert->signature_key))
return 0;
if ((rdomain = ssh_packet_rdomain_in(ssh)) == NULL)
rdomain = "";
remote_ip = ssh_remote_ipaddr(ssh);
remote_host = auth_get_canonical_hostname(ssh, options.use_dns);
xasprintf(&conn_id, "%s %d %s %d",
ssh_local_ipaddr(ssh), ssh_local_port(ssh),
remote_ip, ssh_remote_port(ssh));
for (i = 0; !success && i < options.num_authkeys_files; i++) {
int r;
glob_t gl;
if (strcasecmp(options.authorized_keys_files[i], "none") == 0)
continue;
file = expand_authorized_keys(
options.authorized_keys_files[i], pw);
temporarily_use_uid(pw);
r = glob(file, 0, NULL, &gl);
restore_uid();
if (r != 0) {
if (r != GLOB_NOMATCH) {
logit_f("glob \"%s\" failed", file);
}
free(file);
file = NULL;
continue;
} else if (gl.gl_pathc > INT_MAX) {
fatal_f("too many glob results for \"%s\"", file);
} else if (gl.gl_pathc > 1) {
debug2_f("glob \"%s\" returned %zu matches", file,
gl.gl_pathc);
}
for (j = 0; !success && j < gl.gl_pathc; j++) {
success = user_key_allowed2(pw, key, gl.gl_pathv[j],
remote_ip, remote_host, &opts);
if (!success) {
sshauthopt_free(opts);
opts = NULL;
}
}
free(file);
file = NULL;
globfree(&gl);
}
if (success)
goto out;
if ((success = user_cert_trusted_ca(pw, key, remote_ip, remote_host,
conn_id, rdomain, &opts)) != 0)
goto out;
sshauthopt_free(opts);
opts = NULL;
if ((success = user_key_command_allowed2(pw, key, remote_ip,
remote_host, conn_id, rdomain, &opts)) != 0)
goto out;
sshauthopt_free(opts);
opts = NULL;
out:
free(conn_id);
if (success && authoptsp != NULL) {
*authoptsp = opts;
opts = NULL;
}
sshauthopt_free(opts);
return success;
}
Authmethod method_pubkey = {
&methodcfg_pubkey,
userauth_pubkey,
};
