Merge branch 'v4-0-test' of ssh://git.samba.org/data/git/samba into v4-0-gmake3
[nivanova/samba-autobuild/.git] / source4 / auth / gensec / gensec.c
index 619cf7c35059c9da5570f4843d8392af0601151c..0edb34d7403fc7d048314ac3d005bf2128bb202f 100644 (file)
@@ -8,7 +8,7 @@
    
    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
+   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,
    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.
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "includes.h"
 #include "auth/auth.h"
 #include "lib/events/events.h"
-#include "build.h"
 #include "librpc/rpc/dcerpc.h"
+#include "auth/credentials/credentials.h"
+#include "auth/gensec/gensec.h"
+#include "auth/gensec/gensec_proto.h"
+#include "param/param.h"
 
 /* the list of currently registered GENSEC backends */
 static struct gensec_security_ops **generic_security_ops;
@@ -33,7 +35,7 @@ static int gensec_num_backends;
 
 /* Return all the registered mechs.  Don't modify the return pointer,
  * but you may talloc_reference it if convient */
-struct gensec_security_ops **gensec_security_all(void)
+_PUBLIC_ struct gensec_security_ops **gensec_security_all(void)
 {
        return generic_security_ops;
 }
@@ -43,12 +45,17 @@ struct gensec_security_ops **gensec_security_all(void)
  * gensec_security_all(), or from cli_credentials_gensec_list() (ie,
  * an existing list we have trimmed down) */
 
-struct gensec_security_ops **gensec_use_kerberos_mechs(TALLOC_CTX *mem_ctx, 
+_PUBLIC_ struct gensec_security_ops **gensec_use_kerberos_mechs(TALLOC_CTX *mem_ctx, 
                                                       struct gensec_security_ops **old_gensec_list, 
-                                                      enum credentials_use_kerberos use_kerberos) 
+                                                      struct cli_credentials *creds)
 {
        struct gensec_security_ops **new_gensec_list;
        int i, j, num_mechs_in;
+       enum credentials_use_kerberos use_kerberos = CRED_AUTO_USE_KERBEROS;
+
+       if (creds) {
+               use_kerberos = cli_credentials_get_kerberos_state(creds);
+       }
 
        if (use_kerberos == CRED_AUTO_USE_KERBEROS) {
                if (!talloc_reference(mem_ctx, old_gensec_list)) {
@@ -78,13 +85,13 @@ struct gensec_security_ops **gensec_use_kerberos_mechs(TALLOC_CTX *mem_ctx,
                }
                switch (use_kerberos) {
                case CRED_DONT_USE_KERBEROS:
-                       if (old_gensec_list[i]->kerberos == False) {
+                       if (old_gensec_list[i]->kerberos == false) {
                                new_gensec_list[j] = old_gensec_list[i];
                                j++;
                        }
                        break;
                case CRED_MUST_USE_KERBEROS:
-                       if (old_gensec_list[i]->kerberos == True) {
+                       if (old_gensec_list[i]->kerberos == true) {
                                new_gensec_list[j] = old_gensec_list[i];
                                j++;
                        }
@@ -110,7 +117,6 @@ struct gensec_security_ops **gensec_security_mechs(struct gensec_security *gense
                }
                return backends;
        } else {
-               enum credentials_use_kerberos use_kerberos;
                struct cli_credentials *creds = gensec_get_credentials(gensec_security);
                if (!creds) {
                        if (!talloc_reference(mem_ctx, backends)) {
@@ -118,8 +124,7 @@ struct gensec_security_ops **gensec_security_mechs(struct gensec_security *gense
                        }
                        return backends;
                }
-               use_kerberos = cli_credentials_get_kerberos_state(creds);
-               return gensec_use_kerberos_mechs(mem_ctx, backends, use_kerberos);
+               return gensec_use_kerberos_mechs(mem_ctx, backends, creds);
        }
 }
 
@@ -448,7 +453,7 @@ const char **gensec_security_oids_from_ops_wrapped(TALLOC_CTX *mem_ctx,
 /**
  * Return all the security subsystems currently enabled on a GENSEC context.
  * 
- * This is taken from a list attached to the cli_credentails, and
+ * This is taken from a list attached to the cli_credentials, and
  * skips the OID in 'skip'.  (Typically the SPNEGO OID)
  * 
  */
@@ -472,9 +477,15 @@ const char **gensec_security_oids(struct gensec_security *gensec_security,
 */
 static NTSTATUS gensec_start(TALLOC_CTX *mem_ctx, 
                             struct event_context *ev,
+                            struct loadparm_context *lp_ctx,
                             struct messaging_context *msg,
                             struct gensec_security **gensec_security)
 {
+       if (ev == NULL) {
+               DEBUG(0, ("No event context available!\n"));
+               return NT_STATUS_INTERNAL_ERROR;
+       }
+
        (*gensec_security) = talloc(mem_ctx, struct gensec_security);
        NT_STATUS_HAVE_NO_MEMORY(*gensec_security);
 
@@ -484,19 +495,12 @@ static NTSTATUS gensec_start(TALLOC_CTX *mem_ctx,
        ZERO_STRUCT((*gensec_security)->peer_addr);
        ZERO_STRUCT((*gensec_security)->my_addr);
 
-       (*gensec_security)->subcontext = False;
+       (*gensec_security)->subcontext = false;
        (*gensec_security)->want_features = 0;
-       
-       if (ev == NULL) {
-               ev = event_context_init(*gensec_security);
-               if (ev == NULL) {
-                       talloc_free(*gensec_security);
-                       return NT_STATUS_NO_MEMORY;
-               }
-       }
 
        (*gensec_security)->event_ctx = ev;
        (*gensec_security)->msg_ctx = msg;
+       (*gensec_security)->lp_ctx = lp_ctx;
 
        return NT_STATUS_OK;
 }
@@ -520,9 +524,10 @@ _PUBLIC_ NTSTATUS gensec_subcontext_start(TALLOC_CTX *mem_ctx,
        (*gensec_security)->ops = NULL;
        (*gensec_security)->private_data = NULL;
 
-       (*gensec_security)->subcontext = True;
+       (*gensec_security)->subcontext = true;
        (*gensec_security)->event_ctx = parent->event_ctx;
        (*gensec_security)->msg_ctx = parent->msg_ctx;
+       (*gensec_security)->lp_ctx = parent->lp_ctx;
 
        return NT_STATUS_OK;
 }
@@ -535,23 +540,15 @@ _PUBLIC_ NTSTATUS gensec_subcontext_start(TALLOC_CTX *mem_ctx,
 */
 _PUBLIC_ NTSTATUS gensec_client_start(TALLOC_CTX *mem_ctx, 
                             struct gensec_security **gensec_security,
-                            struct event_context *ev)
+                            struct event_context *ev,
+                            struct loadparm_context *lp_ctx)
 {
        NTSTATUS status;
-       struct event_context *new_ev = NULL;
 
-       if (ev == NULL) {
-               new_ev = event_context_init(mem_ctx);
-               NT_STATUS_HAVE_NO_MEMORY(new_ev);
-               ev = new_ev;
-       }
-
-       status = gensec_start(mem_ctx, ev, NULL, gensec_security);
+       status = gensec_start(mem_ctx, ev, lp_ctx, NULL, gensec_security);
        if (!NT_STATUS_IS_OK(status)) {
-               talloc_free(new_ev);
                return status;
        }
-       talloc_steal((*gensec_security), new_ev);
        (*gensec_security)->gensec_role = GENSEC_CLIENT;
 
        return status;
@@ -563,8 +560,9 @@ _PUBLIC_ NTSTATUS gensec_client_start(TALLOC_CTX *mem_ctx,
   @param gensec_security Returned GENSEC context pointer.
   @note  The mem_ctx is only a parent and may be NULL.
 */
-NTSTATUS gensec_server_start(TALLOC_CTX *mem_ctx, 
+_PUBLIC_ NTSTATUS gensec_server_start(TALLOC_CTX *mem_ctx, 
                             struct event_context *ev,
+                            struct loadparm_context *lp_ctx,
                             struct messaging_context *msg,
                             struct gensec_security **gensec_security)
 {
@@ -580,7 +578,7 @@ NTSTATUS gensec_server_start(TALLOC_CTX *mem_ctx,
                return NT_STATUS_INTERNAL_ERROR;
        }
 
-       status = gensec_start(mem_ctx, ev, msg, gensec_security);
+       status = gensec_start(mem_ctx, ev, lp_ctx, msg, gensec_security);
        if (!NT_STATUS_IS_OK(status)) {
                return status;
        }
@@ -627,7 +625,7 @@ static NTSTATUS gensec_start_mech(struct gensec_security *gensec_security)
  * @param auth_level DCERPC auth level 
  */
 
-NTSTATUS gensec_start_mech_by_authtype(struct gensec_security *gensec_security, 
+_PUBLIC_ NTSTATUS gensec_start_mech_by_authtype(struct gensec_security *gensec_security, 
                                       uint8_t auth_type, uint8_t auth_level) 
 {
        gensec_security->ops = gensec_security_by_authtype(gensec_security, auth_type);
@@ -653,7 +651,7 @@ NTSTATUS gensec_start_mech_by_authtype(struct gensec_security *gensec_security,
        return gensec_start_mech(gensec_security);
 }
 
-const char *gensec_get_name_by_authtype(uint8_t authtype) 
+_PUBLIC_ const char *gensec_get_name_by_authtype(uint8_t authtype) 
 {
        const struct gensec_security_ops *ops;
        ops = gensec_security_by_authtype(NULL, authtype);
@@ -664,7 +662,7 @@ const char *gensec_get_name_by_authtype(uint8_t authtype)
 }
        
 
-const char *gensec_get_name_by_oid(const char *oid_string) 
+_PUBLIC_ const char *gensec_get_name_by_oid(const char *oid_string) 
 {
        const struct gensec_security_ops *ops;
        ops = gensec_security_by_oid(NULL, oid_string);
@@ -694,7 +692,7 @@ NTSTATUS gensec_start_mech_by_ops(struct gensec_security *gensec_security,
  *       well-known #define to hook it in.
  */
 
-NTSTATUS gensec_start_mech_by_oid(struct gensec_security *gensec_security, 
+_PUBLIC_ NTSTATUS gensec_start_mech_by_oid(struct gensec_security *gensec_security, 
                                  const char *mech_oid) 
 {
        gensec_security->ops = gensec_security_by_oid(gensec_security, mech_oid);
@@ -710,7 +708,7 @@ NTSTATUS gensec_start_mech_by_oid(struct gensec_security *gensec_security,
  *
  */
 
-NTSTATUS gensec_start_mech_by_sasl_name(struct gensec_security *gensec_security, 
+_PUBLIC_ NTSTATUS gensec_start_mech_by_sasl_name(struct gensec_security *gensec_security, 
                                        const char *sasl_name) 
 {
        gensec_security->ops = gensec_security_by_sasl_name(gensec_security, sasl_name);
@@ -759,7 +757,7 @@ _PUBLIC_ NTSTATUS gensec_start_mech_by_sasl_list(struct gensec_security *gensec_
  *
  */
 
-NTSTATUS gensec_start_mech_by_name(struct gensec_security *gensec_security, 
+_PUBLIC_ NTSTATUS gensec_start_mech_by_name(struct gensec_security *gensec_security, 
                                        const char *name) 
 {
        gensec_security->ops = gensec_security_by_name(gensec_security, name);
@@ -773,7 +771,7 @@ NTSTATUS gensec_start_mech_by_name(struct gensec_security *gensec_security,
 /*
   wrappers for the gensec function pointers
 */
-NTSTATUS gensec_unseal_packet(struct gensec_security *gensec_security, 
+_PUBLIC_ NTSTATUS gensec_unseal_packet(struct gensec_security *gensec_security, 
                              TALLOC_CTX *mem_ctx, 
                              uint8_t *data, size_t length, 
                              const uint8_t *whole_pdu, size_t pdu_length, 
@@ -792,7 +790,7 @@ NTSTATUS gensec_unseal_packet(struct gensec_security *gensec_security,
                                                   sig);
 }
 
-NTSTATUS gensec_check_packet(struct gensec_security *gensec_security, 
+_PUBLIC_ NTSTATUS gensec_check_packet(struct gensec_security *gensec_security, 
                             TALLOC_CTX *mem_ctx, 
                             const uint8_t *data, size_t length, 
                             const uint8_t *whole_pdu, size_t pdu_length, 
@@ -808,7 +806,7 @@ NTSTATUS gensec_check_packet(struct gensec_security *gensec_security,
        return gensec_security->ops->check_packet(gensec_security, mem_ctx, data, length, whole_pdu, pdu_length, sig);
 }
 
-NTSTATUS gensec_seal_packet(struct gensec_security *gensec_security, 
+_PUBLIC_ NTSTATUS gensec_seal_packet(struct gensec_security *gensec_security, 
                            TALLOC_CTX *mem_ctx, 
                            uint8_t *data, size_t length, 
                            const uint8_t *whole_pdu, size_t pdu_length, 
@@ -824,7 +822,7 @@ NTSTATUS gensec_seal_packet(struct gensec_security *gensec_security,
        return gensec_security->ops->seal_packet(gensec_security, mem_ctx, data, length, whole_pdu, pdu_length, sig);
 }
 
-NTSTATUS gensec_sign_packet(struct gensec_security *gensec_security, 
+_PUBLIC_ NTSTATUS gensec_sign_packet(struct gensec_security *gensec_security, 
                            TALLOC_CTX *mem_ctx, 
                            const uint8_t *data, size_t length, 
                            const uint8_t *whole_pdu, size_t pdu_length, 
@@ -840,7 +838,7 @@ NTSTATUS gensec_sign_packet(struct gensec_security *gensec_security,
        return gensec_security->ops->sign_packet(gensec_security, mem_ctx, data, length, whole_pdu, pdu_length, sig);
 }
 
-size_t gensec_sig_size(struct gensec_security *gensec_security, size_t data_size) 
+_PUBLIC_ size_t gensec_sig_size(struct gensec_security *gensec_security, size_t data_size) 
 {
        if (!gensec_security->ops->sig_size) {
                return 0;
@@ -870,7 +868,7 @@ size_t gensec_max_input_size(struct gensec_security *gensec_security)
        return gensec_security->ops->max_input_size(gensec_security);
 }
 
-NTSTATUS gensec_wrap(struct gensec_security *gensec_security, 
+_PUBLIC_ NTSTATUS gensec_wrap(struct gensec_security *gensec_security, 
                     TALLOC_CTX *mem_ctx, 
                     const DATA_BLOB *in, 
                     DATA_BLOB *out) 
@@ -881,7 +879,7 @@ NTSTATUS gensec_wrap(struct gensec_security *gensec_security,
        return gensec_security->ops->wrap(gensec_security, mem_ctx, in, out);
 }
 
-NTSTATUS gensec_unwrap(struct gensec_security *gensec_security, 
+_PUBLIC_ NTSTATUS gensec_unwrap(struct gensec_security *gensec_security, 
                       TALLOC_CTX *mem_ctx, 
                       const DATA_BLOB *in, 
                       DATA_BLOB *out) 
@@ -892,7 +890,7 @@ NTSTATUS gensec_unwrap(struct gensec_security *gensec_security,
        return gensec_security->ops->unwrap(gensec_security, mem_ctx, in, out);
 }
 
-NTSTATUS gensec_session_key(struct gensec_security *gensec_security, 
+_PUBLIC_ NTSTATUS gensec_session_key(struct gensec_security *gensec_security, 
                            DATA_BLOB *session_key)
 {
        if (!gensec_security->ops->session_key) {
@@ -915,7 +913,7 @@ NTSTATUS gensec_session_key(struct gensec_security *gensec_security,
  *
  */
 
-NTSTATUS gensec_session_info(struct gensec_security *gensec_security, 
+_PUBLIC_ NTSTATUS gensec_session_info(struct gensec_security *gensec_security, 
                             struct auth_session_info **session_info)
 {
        if (!gensec_security->ops->session_info) {
@@ -1025,11 +1023,11 @@ _PUBLIC_ void gensec_want_feature(struct gensec_security *gensec_security,
  *
  */
 
-_PUBLIC_ BOOL gensec_have_feature(struct gensec_security *gensec_security,
+_PUBLIC_ bool gensec_have_feature(struct gensec_security *gensec_security,
                         uint32_t feature) 
 {
        if (!gensec_security->ops->have_feature) {
-               return False;
+               return false;
        }
        
        /* We might 'have' features that we don't 'want', because the
@@ -1045,6 +1043,8 @@ _PUBLIC_ BOOL gensec_have_feature(struct gensec_security *gensec_security,
 _PUBLIC_ NTSTATUS gensec_set_credentials(struct gensec_security *gensec_security, struct cli_credentials *credentials) 
 {
        gensec_security->credentials = talloc_reference(gensec_security, credentials);
+       NT_STATUS_HAVE_NO_MEMORY(gensec_security->credentials);
+       gensec_want_feature(gensec_security, cli_credentials_get_gensec_features(gensec_security->credentials));
        return NT_STATUS_OK;
 }
 
@@ -1053,7 +1053,7 @@ _PUBLIC_ NTSTATUS gensec_set_credentials(struct gensec_security *gensec_security
  *
  */
 
-struct cli_credentials *gensec_get_credentials(struct gensec_security *gensec_security) 
+_PUBLIC_ struct cli_credentials *gensec_get_credentials(struct gensec_security *gensec_security) 
 {
        if (!gensec_security) {
                return NULL;
@@ -1101,7 +1101,7 @@ _PUBLIC_ NTSTATUS gensec_set_target_hostname(struct gensec_security *gensec_secu
 _PUBLIC_ const char *gensec_get_target_hostname(struct gensec_security *gensec_security) 
 {
        /* We allow the target hostname to be overriden for testing purposes */
-       const char *target_hostname = lp_parm_string(-1, "gensec", "target_hostname");
+       const char *target_hostname = lp_parm_string(gensec_security->lp_ctx, NULL, "gensec", "target_hostname");
        if (target_hostname) {
                return target_hostname;
        }
@@ -1123,7 +1123,7 @@ _PUBLIC_ const char *gensec_get_target_hostname(struct gensec_security *gensec_s
  * cryptographic tokens, to avoid certain attacks.
  */
 
-NTSTATUS gensec_set_my_addr(struct gensec_security *gensec_security, struct socket_address *my_addr) 
+_PUBLIC_ NTSTATUS gensec_set_my_addr(struct gensec_security *gensec_security, struct socket_address *my_addr) 
 {
        gensec_security->my_addr = my_addr;
        if (my_addr && !talloc_reference(gensec_security, my_addr)) {
@@ -1132,7 +1132,7 @@ NTSTATUS gensec_set_my_addr(struct gensec_security *gensec_security, struct sock
        return NT_STATUS_OK;
 }
 
-NTSTATUS gensec_set_peer_addr(struct gensec_security *gensec_security, struct socket_address *peer_addr) 
+_PUBLIC_ NTSTATUS gensec_set_peer_addr(struct gensec_security *gensec_security, struct socket_address *peer_addr) 
 {
        gensec_security->peer_addr = peer_addr;
        if (peer_addr && !talloc_reference(gensec_security, peer_addr)) {
@@ -1152,7 +1152,7 @@ struct socket_address *gensec_get_my_addr(struct gensec_security *gensec_securit
        return NULL;
 }
 
-struct socket_address *gensec_get_peer_addr(struct gensec_security *gensec_security) 
+_PUBLIC_ struct socket_address *gensec_get_peer_addr(struct gensec_security *gensec_security) 
 {
        if (gensec_security->peer_addr) {
                return gensec_security->peer_addr;
@@ -1199,7 +1199,7 @@ const char *gensec_get_target_principal(struct gensec_security *gensec_security)
 */
 NTSTATUS gensec_register(const struct gensec_security_ops *ops)
 {
-       if (!lp_parm_bool(-1, "gensec", ops->name, ops->enabled)) {
+       if (!lp_parm_bool(global_loadparm, NULL, "gensec", ops->name, ops->enabled)) {
                DEBUG(2,("gensec subsystem %s is disabled\n", ops->name));
                return NT_STATUS_OK;
        }
@@ -1219,7 +1219,7 @@ NTSTATUS gensec_register(const struct gensec_security_ops *ops)
                return NT_STATUS_NO_MEMORY;
        }
 
-       generic_security_ops[gensec_num_backends] = discard_const(ops);
+       generic_security_ops[gensec_num_backends] = discard_const_p(struct gensec_security_ops, ops);
        gensec_num_backends++;
        generic_security_ops[gensec_num_backends] = NULL;
 
@@ -1252,17 +1252,23 @@ static int sort_gensec(struct gensec_security_ops **gs1, struct gensec_security_
 /*
   initialise the GENSEC subsystem
 */
-NTSTATUS gensec_init(void)
+_PUBLIC_ NTSTATUS gensec_init(struct loadparm_context *lp_ctx)
 {
-       static BOOL initialized = False;
-
-       init_module_fn static_init[] = STATIC_gensec_MODULES;
+       static bool initialized = false;
+       extern NTSTATUS gensec_sasl_init(void);
+       extern NTSTATUS gensec_krb5_init(void);
+       extern NTSTATUS gensec_schannel_init(void);
+       extern NTSTATUS gensec_spnego_init(void);
+       extern NTSTATUS gensec_gssapi_init(void);
+       extern NTSTATUS gensec_ntlmssp_init(void);
+
+       init_module_fn static_init[] = { STATIC_gensec_MODULES };
        init_module_fn *shared_init;
 
        if (initialized) return NT_STATUS_OK;
-       initialized = True;
+       initialized = true;
        
-       shared_init = load_samba_modules(NULL, "gensec");
+       shared_init = load_samba_modules(NULL, lp_ctx, "gensec");
 
        run_init_functions(static_init);
        run_init_functions(shared_init);