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-rw-r--r--source4/libads/config.m41
-rw-r--r--source4/libads/kerberos.c140
-rw-r--r--source4/libads/kerberos_verify.c411
3 files changed, 1 insertions, 551 deletions
diff --git a/source4/libads/config.m4 b/source4/libads/config.m4
index 99d138cd09..c6029a4d80 100644
--- a/source4/libads/config.m4
+++ b/source4/libads/config.m4
@@ -443,3 +443,4 @@ fi
SMB_EXT_LIB(LDAP,[${LDAP_LIBS}],[${LDAP_CFLAGS}],[${LDAP_CPPFLAGS}],[${LDAP_LDFLAGS}])
SMB_EXT_LIB(KRB5,[${KRB5_LIBS}],[${KRB5_CFLAGS}],[${KRB5_CPPFLAGS}],[${KRB5_LDFLAGS}])
+
diff --git a/source4/libads/kerberos.c b/source4/libads/kerberos.c
deleted file mode 100644
index bef2febaef..0000000000
--- a/source4/libads/kerberos.c
+++ /dev/null
@@ -1,140 +0,0 @@
-/*
- Unix SMB/CIFS implementation.
- kerberos utility library
- Copyright (C) Andrew Tridgell 2001
- Copyright (C) Remus Koos 2001
-
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-#include "includes.h"
-
-#ifdef HAVE_KRB5
-
-/*
- we use a prompter to avoid a crash bug in the kerberos libs when
- dealing with empty passwords
- this prompter is just a string copy ...
-*/
-static krb5_error_code
-kerb_prompter(krb5_context ctx, void *data,
- const char *name,
- const char *banner,
- int num_prompts,
- krb5_prompt prompts[])
-{
- if (num_prompts == 0) return 0;
-
- memset(prompts[0].reply->data, 0, prompts[0].reply->length);
- if (prompts[0].reply->length > 0) {
- if (data) {
- strncpy(prompts[0].reply->data, data, prompts[0].reply->length-1);
- prompts[0].reply->length = strlen(prompts[0].reply->data);
- } else {
- prompts[0].reply->length = 0;
- }
- }
- return 0;
-}
-
-/*
- simulate a kinit, putting the tgt in the default cache location
- remus@snapserver.com
-*/
-int kerberos_kinit_password(const char *principal, const char *password, int time_offset)
-{
- krb5_context ctx;
- krb5_error_code code = 0;
- krb5_ccache cc;
- krb5_principal me;
- krb5_creds my_creds;
-
- if ((code = krb5_init_context(&ctx)))
- return code;
-
- if (time_offset != 0) {
- krb5_set_real_time(ctx, time(NULL) + time_offset, 0);
- }
-
- if ((code = krb5_cc_default(ctx, &cc))) {
- krb5_free_context(ctx);
- return code;
- }
-
- if ((code = krb5_parse_name(ctx, principal, &me))) {
- krb5_free_context(ctx);
- return code;
- }
-
- if ((code = krb5_get_init_creds_password(ctx, &my_creds, me, NULL,
- kerb_prompter,
- password, 0, NULL, NULL))) {
- krb5_free_principal(ctx, me);
- krb5_free_context(ctx);
- return code;
- }
-
- if ((code = krb5_cc_initialize(ctx, cc, me))) {
- krb5_free_cred_contents(ctx, &my_creds);
- krb5_free_principal(ctx, me);
- krb5_free_context(ctx);
- return code;
- }
-
- if ((code = krb5_cc_store_cred(ctx, cc, &my_creds))) {
- krb5_cc_close(ctx, cc);
- krb5_free_cred_contents(ctx, &my_creds);
- krb5_free_principal(ctx, me);
- krb5_free_context(ctx);
- return code;
- }
-
- krb5_cc_close(ctx, cc);
- krb5_free_cred_contents(ctx, &my_creds);
- krb5_free_principal(ctx, me);
- krb5_free_context(ctx);
-
- return 0;
-}
-
-
-
-/* run kinit to setup our ccache */
-int ads_kinit_password(ADS_STRUCT *ads)
-{
- char *s;
- int ret;
-
- if (asprintf(&s, "%s@%s", ads->auth.user_name, ads->auth.realm) == -1) {
- return KRB5_CC_NOMEM;
- }
-
- if (!ads->auth.password) {
- return KRB5_LIBOS_CANTREADPWD;
- }
-
- ret = kerberos_kinit_password(s, ads->auth.password, ads->auth.time_offset);
-
- if (ret) {
- DEBUG(0,("kerberos_kinit_password %s failed: %s\n",
- s, error_message(ret)));
- }
- free(s);
- return ret;
-}
-
-
-#endif
diff --git a/source4/libads/kerberos_verify.c b/source4/libads/kerberos_verify.c
deleted file mode 100644
index 48a8378d36..0000000000
--- a/source4/libads/kerberos_verify.c
+++ /dev/null
@@ -1,411 +0,0 @@
-/*
- Unix SMB/CIFS implementation.
- kerberos utility library
- Copyright (C) Andrew Tridgell 2001
- Copyright (C) Remus Koos 2001
- Copyright (C) Luke Howard 2003
- Copyright (C) Guenther Deschner 2003
- Copyright (C) Jim McDonough (jmcd@us.ibm.com) 2003
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-#include "includes.h"
-
-#ifdef HAVE_KRB5
-
-static void free_keytab(krb5_context context, krb5_keytab keytab)
-{
- int ret=0;
-
- if (keytab)
- ret = krb5_kt_close(context, keytab);
- if (ret) {
- DEBUG(3, ("krb5_kt_close failed (%s)\n",
- error_message(ret)));
- }
-}
-
-#ifdef HAVE_MEMORY_KEYTAB
-static krb5_error_code create_keytab(krb5_context context,
- krb5_principal host_princ,
- char *host_princ_s,
- krb5_data password,
- krb5_enctype *enctypes,
- krb5_keytab *keytab,
- char *keytab_name)
-{
- krb5_keytab_entry entry;
- krb5_kvno kvno = 1;
- krb5_error_code ret;
- krb5_keyblock *key;
- int i;
-
- DEBUG(10,("creating keytab: %s\n", keytab_name));
- ret = krb5_kt_resolve(context, keytab_name, keytab);
- if (ret)
- return ret;
-
- if (!(key = (krb5_keyblock *)malloc(sizeof(*key)))) {
- return ENOMEM;
- }
-
- /* add keytab entries for all encryption types */
- for ( i=0; enctypes[i]; i++ ) {
-
- if (create_kerberos_key_from_string(context, host_princ, &password, key, enctypes[i])) {
- continue;
- }
-
- entry.principal = host_princ;
- entry.vno = kvno;
-
-#if !defined(HAVE_KRB5_KEYTAB_ENTRY_KEY) && !defined(HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK)
-#error krb5_keytab_entry has no key or keyblock member
-#endif
-
-#ifdef HAVE_KRB5_KEYTAB_ENTRY_KEY /* MIT */
- entry.key = *key;
-#endif
-
-#ifdef HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK /* Heimdal */
- entry.keyblock = *key;
-#endif
-
- DEBUG(10,("adding keytab-entry for (%s) with encryption type (%d)\n",
- host_princ_s, enctypes[i]));
- ret = krb5_kt_add_entry(context, *keytab, &entry);
- if (ret) {
- DEBUG(1,("adding entry to keytab failed (%s)\n",
- error_message(ret)));
- free_keytab(context, *keytab);
- return ret;
- }
- }
- krb5_free_keyblock(context, key);
-
- return 0;
-}
-#endif
-
-static BOOL setup_keytab(krb5_context context,
- krb5_principal host_princ,
- char *host_princ_s,
- krb5_data password,
- krb5_enctype *enctypes,
- krb5_keytab *keytab)
-{
- char *keytab_name = NULL;
- krb5_error_code ret;
-
- /* check if we have to setup a keytab - not currently enabled
- I've put this in so that the else block below functions
- the same way that it will when this code is turned on */
- if (0 /* will later be *lp_keytab() */) {
-
- /* use a file-keytab */
- asprintf(&keytab_name, "%s:%s",
- ""
- /* KRB5_KT_FILE_PREFIX, "FILE" or
- "WRFILE" depending on HEeimdal or MIT */,
- "" /* will later be lp_keytab() */);
-
- DEBUG(10,("will use filebased keytab: %s\n", keytab_name));
- ret = krb5_kt_resolve(context, keytab_name, keytab);
- if (ret) {
- DEBUG(3,("cannot resolve keytab name %s (%s)\n",
- keytab_name,
- error_message(ret)));
- SAFE_FREE(keytab_name);
- return False;
- }
-
- }
-
-#if defined(HAVE_MEMORY_KEYTAB)
- else {
-
- /* setup a in-memory-keytab */
- asprintf(&keytab_name, "MEMORY:");
-
- ret = create_keytab(context, host_princ, host_princ_s, password, enctypes,
- keytab, keytab_name);
- if (ret) {
- DEBUG(3,("unable to create MEMORY: keytab (%s)\n",
- error_message(ret)));
- SAFE_FREE(keytab_name);
- return False;
- }
- }
-#endif
- SAFE_FREE(keytab_name);
- return True;
-}
-
-
-/*
- verify an incoming ticket and parse out the principal name and
- authorization_data if available
-*/
-NTSTATUS ads_verify_ticket(const char *realm, const DATA_BLOB *ticket,
- char **principal, DATA_BLOB *auth_data,
- DATA_BLOB *ap_rep,
- DATA_BLOB *session_key)
-{
- NTSTATUS sret = NT_STATUS_LOGON_FAILURE;
- krb5_context context = NULL;
- krb5_auth_context auth_context = NULL;
- krb5_keytab keytab = NULL;
- krb5_data packet;
- krb5_ticket *tkt = NULL;
- krb5_rcache rcache = NULL;
- int ret, i;
- krb5_keyblock *key = NULL;
-
- krb5_principal host_princ;
- char *host_princ_s = NULL;
- BOOL free_host_princ = False;
-
- fstring myname;
- char *password_s = NULL;
- krb5_data password;
- krb5_enctype *enctypes = NULL;
-#if 0
- krb5_address local_addr;
- krb5_address remote_addr;
-#endif
- BOOL auth_ok = False;
-
- ZERO_STRUCT(packet);
- ZERO_STRUCT(password);
- ZERO_STRUCTP(auth_data);
- ZERO_STRUCTP(ap_rep);
-
- if (!secrets_init()) {
- DEBUG(1,("ads_verify_ticket: secrets_init failed\n"));
- return NT_STATUS_LOGON_FAILURE;
- }
-
- password_s = secrets_fetch_machine_password(lp_workgroup(), NULL, NULL);
- if (!password_s) {
- DEBUG(1,("ads_verify_ticket: failed to fetch machine password\n"));
- return NT_STATUS_LOGON_FAILURE;
- }
-
- password.data = password_s;
- password.length = strlen(password_s);
-
- ret = krb5_init_context(&context);
- if (ret) {
- DEBUG(1,("ads_verify_ticket: krb5_init_context failed (%s)\n", error_message(ret)));
- return NT_STATUS_LOGON_FAILURE;
- }
-
- ret = krb5_set_default_realm(context, realm);
- if (ret) {
- DEBUG(1,("ads_verify_ticket: krb5_set_default_realm failed (%s)\n", error_message(ret)));
- sret = NT_STATUS_LOGON_FAILURE;
- goto out;
- }
-
- /* This whole process is far more complex than I would
- like. We have to go through all this to allow us to store
- the secret internally, instead of using /etc/krb5.keytab */
-
- ret = krb5_auth_con_init(context, &auth_context);
- if (ret) {
- DEBUG(1,("ads_verify_ticket: krb5_auth_con_init failed (%s)\n", error_message(ret)));
- sret = NT_STATUS_LOGON_FAILURE;
- goto out;
- }
-
- fstrcpy(myname, global_myname());
- strlower_m(myname);
- asprintf(&host_princ_s, "HOST/%s@%s", myname, lp_realm());
- ret = krb5_parse_name(context, host_princ_s, &host_princ);
- if (ret) {
- DEBUG(1,("ads_verify_ticket: krb5_parse_name(%s) failed (%s)\n",
- host_princ_s, error_message(ret)));
- sret = NT_STATUS_LOGON_FAILURE;
- goto out;
- }
-
- free_host_princ = True;
-
- /*
- * JRA. We must set the rcache here. This will prevent replay attacks.
- */
-
- ret = krb5_get_server_rcache(context, krb5_princ_component(context, host_princ, 0), &rcache);
- if (ret) {
- DEBUG(1,("ads_verify_ticket: krb5_get_server_rcache failed (%s)\n", error_message(ret)));
- sret = NT_STATUS_LOGON_FAILURE;
- goto out;
- }
-
- ret = krb5_auth_con_setrcache(context, auth_context, rcache);
- if (ret) {
- DEBUG(1,("ads_verify_ticket: krb5_auth_con_setrcache failed (%s)\n", error_message(ret)));
- sret = NT_STATUS_LOGON_FAILURE;
- goto out;
- }
-
- /* CIFS doesn't use addresses in tickets. This would breat NAT. JRA */
-
- if ((ret = get_kerberos_allowed_etypes(context, &enctypes))) {
- DEBUG(1,("ads_verify_ticket: krb5_get_permitted_enctypes failed (%s)\n",
- error_message(ret)));
- sret = NT_STATUS_LOGON_FAILURE;
- goto out;
- }
-
- /* Lock a mutex surrounding the replay as there is no locking in the MIT krb5
- * code surrounding the replay cache... */
-
- if (!grab_server_mutex("replay cache mutex")) {
- DEBUG(1,("ads_verify_ticket: unable to protect replay cache with mutex.\n"));
- sret = NT_STATUS_LOGON_FAILURE;
- goto out;
- }
-
- if (!setup_keytab(context, host_princ, host_princ_s, password,
- enctypes, &keytab)) {
- DEBUG(3,("ads_verify_ticket: unable to setup keytab\n"));
- sret = NT_STATUS_LOGON_FAILURE;
- goto out;
- }
-
- /* We need to setup a auth context with each possible encoding type in turn. */
- for (i=0;enctypes[i];i++) {
- if (!(key = (krb5_keyblock *)malloc(sizeof(*key)))) {
- sret = NT_STATUS_NO_MEMORY;
- goto out;
- }
-
- if (create_kerberos_key_from_string(context, host_princ, &password, key, enctypes[i])) {
- continue;
- }
-
- krb5_auth_con_setuseruserkey(context, auth_context, key);
-
- krb5_free_keyblock(context, key);
-
- packet.length = ticket->length;
- packet.data = (krb5_pointer)ticket->data;
-
- if (!(ret = krb5_rd_req(context, &auth_context, &packet,
-#ifdef HAVE_MEMORY_KEYTAB
- host_princ,
-#else
- NULL,
-#endif
- keytab, NULL, &tkt))) {
- DEBUG(10,("ads_verify_ticket: enc type [%u] decrypted message !\n",
- (uint_t)enctypes[i] ));
- auth_ok = True;
- break;
- }
-
- DEBUG((ret != KRB5_BAD_ENCTYPE) ? 3 : 10,
- ("ads_verify_ticket: enc type [%u] failed to decrypt with error %s\n",
- (uint_t)enctypes[i], error_message(ret)));
- }
-
- release_server_mutex();
-
- if (!auth_ok) {
- DEBUG(3,("ads_verify_ticket: krb5_rd_req with auth failed (%s)\n",
- error_message(ret)));
- sret = NT_STATUS_LOGON_FAILURE;
- goto out;
- }
-
- ret = krb5_mk_rep(context, auth_context, &packet);
- if (ret) {
- DEBUG(3,("ads_verify_ticket: Failed to generate mutual authentication reply (%s)\n",
- error_message(ret)));
- sret = NT_STATUS_LOGON_FAILURE;
- goto out;
- }
-
- *ap_rep = data_blob(packet.data, packet.length);
- free(packet.data);
-
- get_krb5_smb_session_key(context, auth_context, session_key, True);
- dump_data_pw("SMB session key (from ticket)\n", session_key->data, session_key->length);
-
-#if 0
- file_save("/tmp/ticket.dat", ticket->data, ticket->length);
-#endif
-
- get_auth_data_from_tkt(auth_data, tkt);
-
-#if 0
- {
- TALLOC_CTX *ctx = talloc_init("pac data");
- decode_pac_data(auth_data, ctx);
- talloc_destroy(ctx);
- }
-#endif
-
-#if 0
- if (tkt->enc_part2) {
- file_save("/tmp/authdata.dat",
- tkt->enc_part2->authorization_data[0]->contents,
- tkt->enc_part2->authorization_data[0]->length);
- }
-#endif
-
-
- /* get rid of all resources associated with the keytab */
- if (keytab) free_keytab(context, keytab);
-
- if ((ret = krb5_unparse_name(context, get_principal_from_tkt(tkt),
- principal))) {
- DEBUG(3,("ads_verify_ticket: krb5_unparse_name failed (%s)\n",
- error_message(ret)));
- sret = NT_STATUS_LOGON_FAILURE;
- goto out;
- }
-
- sret = NT_STATUS_OK;
-
- out:
-
- if (!NT_STATUS_IS_OK(sret))
- data_blob_free(auth_data);
-
- if (!NT_STATUS_IS_OK(sret))
- data_blob_free(ap_rep);
-
- if (free_host_princ)
- krb5_free_principal(context, host_princ);
-
- if (tkt != NULL)
- krb5_free_ticket(context, tkt);
- free_kerberos_etypes(context, enctypes);
- SAFE_FREE(password_s);
- SAFE_FREE(host_princ_s);
-
- if (auth_context)
- krb5_auth_con_free(context, auth_context);
-
- if (context)
- krb5_free_context(context);
-
- return sret;
-}
-
-#endif /* HAVE_KRB5 */
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