it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
-
+
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-
+
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
+#include "system/filesys.h"
#include "smb_krb5.h"
#include "../librpc/gen_ndr/ndr_misc.h"
#include "libads/kerberos_proto.h"
+#include "libads/cldap.h"
+#include "secrets.h"
+#include "../lib/tsocket/tsocket.h"
#ifdef HAVE_KRB5
if ((code = krb5_cc_resolve(ctx, cache_name ? cache_name : krb5_cc_default_name(ctx), &cc))) {
goto out;
}
-
+
if ((code = smb_krb5_parse_name(ctx, principal, &me))) {
goto out;
}
}
#endif
if (add_netbios_addr) {
- if ((code = smb_krb5_gen_netbios_krb5_address(&addr))) {
+ if ((code = smb_krb5_gen_netbios_krb5_address(&addr,
+ lp_netbios_name()))) {
goto out;
}
krb5_get_init_creds_opt_set_address_list(opt, addr->addrs);
}
- if ((code = krb5_get_init_creds_password(ctx, &my_creds, me, CONST_DISCARD(char *,password),
- kerb_prompter, CONST_DISCARD(char *,password),
+ if ((code = krb5_get_init_creds_password(ctx, &my_creds, me, discard_const_p(char,password),
+ kerb_prompter, discard_const_p(char, password),
0, NULL, opt))) {
goto out;
}
if ((code = krb5_cc_initialize(ctx, cc, me))) {
goto out;
}
-
+
if ((code = krb5_cc_store_cred(ctx, cc, &my_creds))) {
goto out;
}
error_message(code)));
return code;
}
-
+
if (!cc_name) {
if ((code = krb5_cc_default(ctx, &cc))) {
krb5_free_context(ctx);
{
fstring salt;
- fstr_sprintf( salt, "host/%s.%s@", global_myname(), lp_realm() );
- strlower_m( salt );
+ fstr_sprintf( salt, "host/%s.%s@", lp_netbios_name(), lp_realm() );
+ (void)strlower_m( salt );
fstrcat( salt, lp_realm() );
return SMB_STRDUP( salt );
/************************************************************************
************************************************************************/
+static
char* kerberos_secrets_fetch_des_salt( void )
{
char *salt, *key;
if ( (key = des_salt_key()) == NULL ) {
DEBUG(0,("kerberos_secrets_fetch_des_salt: failed to generate key!\n"));
- return False;
+ return NULL;
}
salt = (char*)secrets_fetch( key, NULL );
return salt;
}
-/************************************************************************
- Routine to get the default realm from the kerberos credentials cache.
- Caller must free if the return value is not NULL.
-************************************************************************/
-
-char *kerberos_get_default_realm_from_ccache( void )
-{
- char *realm = NULL;
- krb5_context ctx = NULL;
- krb5_ccache cc = NULL;
- krb5_principal princ = NULL;
-
- initialize_krb5_error_table();
- if (krb5_init_context(&ctx)) {
- return NULL;
- }
-
- DEBUG(5,("kerberos_get_default_realm_from_ccache: "
- "Trying to read krb5 cache: %s\n",
- krb5_cc_default_name(ctx)));
- if (krb5_cc_default(ctx, &cc)) {
- DEBUG(0,("kerberos_get_default_realm_from_ccache: "
- "failed to read default cache\n"));
- goto out;
- }
- if (krb5_cc_get_principal(ctx, cc, &princ)) {
- DEBUG(0,("kerberos_get_default_realm_from_ccache: "
- "failed to get default principal\n"));
- goto out;
- }
-
-#if defined(HAVE_KRB5_PRINCIPAL_GET_REALM)
- realm = SMB_STRDUP(krb5_principal_get_realm(ctx, princ));
-#elif defined(HAVE_KRB5_PRINC_REALM)
- {
- krb5_data *realm_data = krb5_princ_realm(ctx, princ);
- realm = SMB_STRNDUP(realm_data->data, realm_data->length);
- }
-#endif
-
- out:
-
- if (ctx) {
- if (princ) {
- krb5_free_principal(ctx, princ);
- }
- if (cc) {
- krb5_cc_close(ctx, cc);
- }
- krb5_free_context(ctx);
- }
-
- return realm;
-}
-
-/************************************************************************
- Routine to get the realm from a given DNS name. Returns malloc'ed memory.
- Caller must free() if the return value is not NULL.
-************************************************************************/
-
-char *kerberos_get_realm_from_hostname(const char *hostname)
-{
-#if defined(HAVE_KRB5_GET_HOST_REALM) && defined(HAVE_KRB5_FREE_HOST_REALM)
-#if defined(HAVE_KRB5_REALM_TYPE)
- /* Heimdal. */
- krb5_realm *realm_list = NULL;
-#else
- /* MIT */
- char **realm_list = NULL;
-#endif
- char *realm = NULL;
- krb5_error_code kerr;
- krb5_context ctx = NULL;
-
- initialize_krb5_error_table();
- if (krb5_init_context(&ctx)) {
- return NULL;
- }
-
- kerr = krb5_get_host_realm(ctx, hostname, &realm_list);
- if (kerr != 0) {
- DEBUG(3,("kerberos_get_realm_from_hostname %s: "
- "failed %s\n",
- hostname ? hostname : "(NULL)",
- error_message(kerr) ));
- goto out;
- }
-
- if (realm_list && realm_list[0]) {
- realm = SMB_STRDUP(realm_list[0]);
- }
-
- out:
-
- if (ctx) {
- if (realm_list) {
- krb5_free_host_realm(ctx, realm_list);
- realm_list = NULL;
- }
- krb5_free_context(ctx);
- ctx = NULL;
- }
- return realm;
-#else
- return NULL;
-#endif
-}
-
/************************************************************************
Routine to get the salting principal for this service. This is
maintained for backwards compatibilty with releases prior to 3.0.24.
to look for the older tdb keys. Caller must free if return is not null.
************************************************************************/
+static
krb5_principal kerberos_fetch_salt_princ_for_host_princ(krb5_context context,
krb5_principal host_princ,
int enctype)
{
char *unparsed_name = NULL, *salt_princ_s = NULL;
krb5_principal ret_princ = NULL;
-
+
/* lookup new key first */
if ( (salt_princ_s = kerberos_secrets_fetch_des_salt()) == NULL ) {
-
+
/* look under the old key. If this fails, just use the standard key */
if (smb_krb5_unparse_name(talloc_tos(), context, host_princ, &unparsed_name) != 0) {
if (smb_krb5_parse_name(context, salt_princ_s, &ret_princ) != 0) {
ret_princ = NULL;
}
-
+
TALLOC_FREE(unparsed_name);
SAFE_FREE(salt_princ_s);
-
+
return ret_princ;
}
+int create_kerberos_key_from_string(krb5_context context,
+ krb5_principal host_princ,
+ krb5_data *password,
+ krb5_keyblock *key,
+ krb5_enctype enctype,
+ bool no_salt)
+{
+ krb5_principal salt_princ = NULL;
+ int ret;
+ /*
+ * Check if we've determined that the KDC is salting keys for this
+ * principal/enctype in a non-obvious way. If it is, try to match
+ * its behavior.
+ */
+ if (no_salt) {
+ KRB5_KEY_DATA(key) = (KRB5_KEY_DATA_CAST *)SMB_MALLOC(password->length);
+ if (!KRB5_KEY_DATA(key)) {
+ return ENOMEM;
+ }
+ memcpy(KRB5_KEY_DATA(key), password->data, password->length);
+ KRB5_KEY_LENGTH(key) = password->length;
+ KRB5_KEY_TYPE(key) = enctype;
+ return 0;
+ }
+ salt_princ = kerberos_fetch_salt_princ_for_host_princ(context, host_princ, enctype);
+ ret = create_kerberos_key_from_string_direct(context, salt_princ ? salt_princ : host_princ, password, key, enctype);
+ if (salt_princ) {
+ krb5_free_principal(context, salt_princ);
+ }
+ return ret;
+}
+
/************************************************************************
Routine to set the salting principal for this service. Active
Directory may use a non-obvious principal name to generate the salt
if (smb_krb5_parse_name(context, princ_s, &princ) != 0) {
goto out;
-
}
if (smb_krb5_unparse_name(talloc_tos(), context, princ, &unparsed_name) != 0) {
goto out;
const struct sockaddr_storage *pss,
const char *kdc_name)
{
- char *kdc_str = NULL;
+ char addr[INET6_ADDRSTRLEN];
+ uint16_t port = get_sockaddr_port(pss);
if (pss->ss_family == AF_INET) {
- kdc_str = talloc_asprintf(mem_ctx, "%s\tkdc = %s\n",
- prev_line,
- print_canonical_sockaddr(mem_ctx, pss));
- } else {
- char addr[INET6_ADDRSTRLEN];
- uint16_t port = get_sockaddr_port(pss);
-
- DEBUG(10,("print_kdc_line: IPv6 case for kdc_name: %s, port: %d\n",
- kdc_name, port));
-
- if (port != 0 && port != DEFAULT_KRB5_PORT) {
- /* Currently for IPv6 we can't specify a non-default
- krb5 port with an address, as this requires a ':'.
- Resolve to a name. */
- char hostname[MAX_DNS_NAME_LENGTH];
- int ret = sys_getnameinfo((const struct sockaddr *)pss,
- sizeof(*pss),
- hostname, sizeof(hostname),
- NULL, 0,
- NI_NAMEREQD);
- if (ret) {
- DEBUG(0,("print_kdc_line: can't resolve name "
- "for kdc with non-default port %s. "
- "Error %s\n.",
- print_canonical_sockaddr(mem_ctx, pss),
- gai_strerror(ret)));
- return NULL;
- }
- /* Success, use host:port */
- kdc_str = talloc_asprintf(mem_ctx,
- "%s\tkdc = %s:%u\n",
- prev_line,
- hostname,
- (unsigned int)port);
- } else {
+ return talloc_asprintf(mem_ctx, "%s\tkdc = %s\n",
+ prev_line,
+ print_canonical_sockaddr(mem_ctx, pss));
+ }
- /* no krb5 lib currently supports "kdc = ipv6 address"
- * at all, so just fill in just the kdc_name if we have
- * it and let the krb5 lib figure out the appropriate
- * ipv6 address - gd */
-
- if (kdc_name) {
- kdc_str = talloc_asprintf(mem_ctx, "%s\tkdc = %s\n",
- prev_line, kdc_name);
- } else {
- kdc_str = talloc_asprintf(mem_ctx, "%s\tkdc = %s\n",
- prev_line,
- print_sockaddr(addr,
- sizeof(addr),
- pss));
- }
+ /*
+ * IPv6 starts here
+ */
+
+ DEBUG(10, ("print_kdc_line: IPv6 case for kdc_name: %s, port: %d\n",
+ kdc_name, port));
+
+ if (port != 0 && port != DEFAULT_KRB5_PORT) {
+ /* Currently for IPv6 we can't specify a non-default
+ krb5 port with an address, as this requires a ':'.
+ Resolve to a name. */
+ char hostname[MAX_DNS_NAME_LENGTH];
+ int ret = sys_getnameinfo((const struct sockaddr *)pss,
+ sizeof(*pss),
+ hostname, sizeof(hostname),
+ NULL, 0,
+ NI_NAMEREQD);
+ if (ret) {
+ DEBUG(0,("print_kdc_line: can't resolve name "
+ "for kdc with non-default port %s. "
+ "Error %s\n.",
+ print_canonical_sockaddr(mem_ctx, pss),
+ gai_strerror(ret)));
+ return NULL;
}
+ /* Success, use host:port */
+ return talloc_asprintf(mem_ctx,
+ "%s\tkdc = %s:%u\n",
+ prev_line,
+ hostname,
+ (unsigned int)port);
}
- return kdc_str;
+
+ /* no krb5 lib currently supports "kdc = ipv6 address"
+ * at all, so just fill in just the kdc_name if we have
+ * it and let the krb5 lib figure out the appropriate
+ * ipv6 address - gd */
+
+ if (kdc_name) {
+ return talloc_asprintf(mem_ctx, "%s\tkdc = %s\n",
+ prev_line, kdc_name);
+ }
+
+ return talloc_asprintf(mem_ctx, "%s\tkdc = %s\n",
+ prev_line,
+ print_sockaddr(addr,
+ sizeof(addr),
+ pss));
}
/************************************************************************
************************************************************************/
+static void add_sockaddr_unique(struct sockaddr_storage *addrs, int *num_addrs,
+ const struct sockaddr_storage *addr)
+{
+ int i;
+
+ for (i=0; i<*num_addrs; i++) {
+ if (sockaddr_equal((const struct sockaddr *)&addrs[i],
+ (const struct sockaddr *)addr)) {
+ return;
+ }
+ }
+ addrs[i] = *addr;
+ *num_addrs += 1;
+}
+
static char *get_kdc_ip_string(char *mem_ctx,
const char *realm,
const char *sitename,
- struct sockaddr_storage *pss,
+ const struct sockaddr_storage *pss,
const char *kdc_name)
{
+ TALLOC_CTX *frame = talloc_stackframe();
int i;
struct ip_service *ip_srv_site = NULL;
struct ip_service *ip_srv_nonsite = NULL;
int count_site = 0;
int count_nonsite;
+ int num_dcs;
+ struct sockaddr_storage *dc_addrs;
+ struct tsocket_address **dc_addrs2 = NULL;
+ const struct tsocket_address * const *dc_addrs3 = NULL;
+ char *result = NULL;
+ struct netlogon_samlogon_response **responses = NULL;
+ NTSTATUS status;
char *kdc_str = print_kdc_line(mem_ctx, "", pss, kdc_name);
if (kdc_str == NULL) {
+ TALLOC_FREE(frame);
return NULL;
}
*/
if (sitename) {
-
get_kdc_list(realm, sitename, &ip_srv_site, &count_site);
-
- for (i = 0; i < count_site; i++) {
- if (sockaddr_equal((struct sockaddr *)&ip_srv_site[i].ss,
- (struct sockaddr *)pss)) {
- continue;
- }
- /* Append to the string - inefficient
- * but not done often. */
- kdc_str = print_kdc_line(mem_ctx,
- kdc_str,
- &ip_srv_site[i].ss,
- NULL);
- if (!kdc_str) {
- SAFE_FREE(ip_srv_site);
- return NULL;
- }
- }
}
/* Get all KDC's. */
get_kdc_list(realm, NULL, &ip_srv_nonsite, &count_nonsite);
- for (i = 0; i < count_nonsite; i++) {
- int j;
+ dc_addrs = talloc_array(talloc_tos(), struct sockaddr_storage,
+ 1 + count_site + count_nonsite);
+ if (dc_addrs == NULL) {
+ goto fail;
+ }
+
+ dc_addrs[0] = *pss;
+ num_dcs = 1;
- if (sockaddr_equal((struct sockaddr *)&ip_srv_nonsite[i].ss, (struct sockaddr *)pss)) {
- continue;
- }
+ for (i=0; i<count_site; i++) {
+ add_sockaddr_unique(dc_addrs, &num_dcs, &ip_srv_site[i].ss);
+ }
- /* Ensure this isn't an IP already seen (YUK! this is n*n....) */
- for (j = 0; j < count_site; j++) {
- if (sockaddr_equal((struct sockaddr *)&ip_srv_nonsite[i].ss,
- (struct sockaddr *)&ip_srv_site[j].ss)) {
- break;
- }
- /* As the lists are sorted we can break early if nonsite > site. */
- if (ip_service_compare(&ip_srv_nonsite[i], &ip_srv_site[j]) > 0) {
- break;
- }
+ for (i=0; i<count_nonsite; i++) {
+ add_sockaddr_unique(dc_addrs, &num_dcs, &ip_srv_nonsite[i].ss);
+ }
+
+ dc_addrs2 = talloc_zero_array(talloc_tos(),
+ struct tsocket_address *,
+ num_dcs);
+ if (dc_addrs2 == NULL) {
+ goto fail;
+ }
+
+ for (i=0; i<num_dcs; i++) {
+ char addr[INET6_ADDRSTRLEN];
+ int ret;
+
+ print_sockaddr(addr, sizeof(addr), &dc_addrs[i]);
+
+ ret = tsocket_address_inet_from_strings(dc_addrs2, "ip",
+ addr, LDAP_PORT,
+ &dc_addrs2[i]);
+ if (ret != 0) {
+ status = map_nt_error_from_unix(errno);
+ DEBUG(2,("Failed to create tsocket_address for %s - %s\n",
+ addr, nt_errstr(status)));
+ goto fail;
}
- if (j != i) {
+ }
+
+ dc_addrs3 = (const struct tsocket_address * const *)dc_addrs2;
+
+ status = cldap_multi_netlogon(talloc_tos(),
+ dc_addrs3, num_dcs,
+ realm, lp_netbios_name(),
+ NETLOGON_NT_VERSION_5 | NETLOGON_NT_VERSION_5EX,
+ MIN(num_dcs, 3), timeval_current_ofs(3, 0), &responses);
+ TALLOC_FREE(dc_addrs2);
+ dc_addrs3 = NULL;
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(10,("get_kdc_ip_string: cldap_multi_netlogon failed: "
+ "%s\n", nt_errstr(status)));
+ goto fail;
+ }
+
+ kdc_str = talloc_strdup(mem_ctx, "");
+ if (kdc_str == NULL) {
+ goto fail;
+ }
+
+ for (i=0; i<num_dcs; i++) {
+ char *new_kdc_str;
+
+ if (responses[i] == NULL) {
continue;
}
/* Append to the string - inefficient but not done often. */
- kdc_str = print_kdc_line(mem_ctx,
- kdc_str,
- &ip_srv_nonsite[i].ss,
- NULL);
- if (!kdc_str) {
- SAFE_FREE(ip_srv_site);
- SAFE_FREE(ip_srv_nonsite);
- return NULL;
+ new_kdc_str = print_kdc_line(mem_ctx, kdc_str,
+ &dc_addrs[i],
+ kdc_name);
+ if (new_kdc_str == NULL) {
+ goto fail;
}
+ TALLOC_FREE(kdc_str);
+ kdc_str = new_kdc_str;
}
-
- SAFE_FREE(ip_srv_site);
- SAFE_FREE(ip_srv_nonsite);
-
DEBUG(10,("get_kdc_ip_string: Returning %s\n",
kdc_str ));
- return kdc_str;
+ result = kdc_str;
+fail:
+ SAFE_FREE(ip_srv_site);
+ SAFE_FREE(ip_srv_nonsite);
+ TALLOC_FREE(frame);
+ return result;
}
/************************************************************************
bool create_local_private_krb5_conf_for_domain(const char *realm,
const char *domain,
const char *sitename,
- struct sockaddr_storage *pss,
+ const struct sockaddr_storage *pss,
const char *kdc_name)
{
char *dname;
int fd;
char *realm_upper = NULL;
bool result = false;
+ char *aes_enctypes = NULL;
+ mode_t mask;
if (!lp_create_krb5_conf()) {
return false;
fname, realm, domain ));
realm_upper = talloc_strdup(fname, realm);
- strupper_m(realm_upper);
+ if (!strupper_m(realm_upper)) {
+ goto done;
+ }
kdc_ip_string = get_kdc_ip_string(dname, realm, sitename, pss, kdc_name);
if (!kdc_ip_string) {
goto done;
}
+ aes_enctypes = talloc_strdup(fname, "");
+ if (aes_enctypes == NULL) {
+ goto done;
+ }
+
+#ifdef HAVE_ENCTYPE_AES256_CTS_HMAC_SHA1_96
+ aes_enctypes = talloc_asprintf_append(aes_enctypes, "%s", "aes256-cts-hmac-sha1-96 ");
+ if (aes_enctypes == NULL) {
+ goto done;
+ }
+#endif
+#ifdef HAVE_ENCTYPE_AES128_CTS_HMAC_SHA1_96
+ aes_enctypes = talloc_asprintf_append(aes_enctypes, "%s", "aes128-cts-hmac-sha1-96");
+ if (aes_enctypes == NULL) {
+ goto done;
+ }
+#endif
+
file_contents = talloc_asprintf(fname,
"[libdefaults]\n\tdefault_realm = %s\n"
- "\tdefault_tgs_enctypes = RC4-HMAC DES-CBC-CRC DES-CBC-MD5\n"
- "\tdefault_tkt_enctypes = RC4-HMAC DES-CBC-CRC DES-CBC-MD5\n"
- "\tpreferred_enctypes = RC4-HMAC DES-CBC-CRC DES-CBC-MD5\n\n"
+ "\tdefault_tgs_enctypes = %s RC4-HMAC DES-CBC-CRC DES-CBC-MD5\n"
+ "\tdefault_tkt_enctypes = %s RC4-HMAC DES-CBC-CRC DES-CBC-MD5\n"
+ "\tpreferred_enctypes = %s RC4-HMAC DES-CBC-CRC DES-CBC-MD5\n\n"
"[realms]\n\t%s = {\n"
"\t%s\t}\n",
- realm_upper, realm_upper, kdc_ip_string);
+ realm_upper, aes_enctypes, aes_enctypes, aes_enctypes,
+ realm_upper, kdc_ip_string);
if (!file_contents) {
goto done;
flen = strlen(file_contents);
+ mask = umask(S_IRWXO | S_IRWXG);
fd = mkstemp(tmpname);
+ umask(mask);
if (fd == -1) {
DEBUG(0,("create_local_private_krb5_conf_for_domain: smb_mkstemp failed,"
" for file %s. Errno %s\n",
/* Insanity, sheer insanity..... */
if (strequal(realm, lp_realm())) {
- char linkpath[PATH_MAX+1];
- int lret;
-
- lret = readlink(SYSTEM_KRB5_CONF_PATH, linkpath, sizeof(linkpath)-1);
- if (lret != -1) {
- linkpath[lret] = '\0';
- }
-
- if (lret != -1 || strcmp(linkpath, fname) == 0) {
- /* Symlink already exists. */
- goto done;
+ SMB_STRUCT_STAT sbuf;
+
+ if (sys_lstat(SYSTEM_KRB5_CONF_PATH, &sbuf, false) == 0) {
+ if (S_ISLNK(sbuf.st_ex_mode) && sbuf.st_ex_size) {
+ int lret;
+ size_t alloc_size = sbuf.st_ex_size + 1;
+ char *linkpath = talloc_array(talloc_tos(), char,
+ alloc_size);
+ if (!linkpath) {
+ goto done;
+ }
+ lret = readlink(SYSTEM_KRB5_CONF_PATH, linkpath,
+ alloc_size - 1);
+ if (lret == -1) {
+ TALLOC_FREE(linkpath);
+ goto done;
+ }
+ linkpath[lret] = '\0';
+
+ if (strcmp(linkpath, fname) == 0) {
+ /* Symlink already exists. */
+ TALLOC_FREE(linkpath);
+ goto done;
+ }
+ TALLOC_FREE(linkpath);
+ }
}
/* Try and replace with a symlink. */
if (symlink(fname, SYSTEM_KRB5_CONF_PATH) == -1) {
- const char *newpath = SYSTEM_KRB5_CONF_PATH ## ".saved";
+ const char *newpath = SYSTEM_KRB5_CONF_PATH ".saved";
if (errno != EEXIST) {
DEBUG(0,("create_local_private_krb5_conf_for_domain: symlink "
"of %s to %s failed. Errno %s\n",
git.samba.org / mat / samba.git / blobdiff