#include "../lib/tsocket/tsocket.h"
#include "../libcli/security/security.h"
#include "../lib/util/tevent_ntstatus.h"
+#include "lib/crypto/sha512.h"
+#include "lib/crypto/aes.h"
+#include "lib/crypto/aes_ccm_128.h"
+#include "lib/crypto/aes_gcm_128.h"
-static struct tevent_req *smbd_smb2_session_setup_send(TALLOC_CTX *mem_ctx,
+static struct tevent_req *smbd_smb2_session_setup_wrap_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct smbd_smb2_request *smb2req,
uint64_t in_session_id,
uint8_t in_security_mode,
uint64_t in_previous_session_id,
DATA_BLOB in_security_buffer);
-static NTSTATUS smbd_smb2_session_setup_recv(struct tevent_req *req,
+static NTSTATUS smbd_smb2_session_setup_wrap_recv(struct tevent_req *req,
uint16_t *out_session_flags,
TALLOC_CTX *mem_ctx,
DATA_BLOB *out_security_buffer,
{
const uint8_t *inhdr;
const uint8_t *inbody;
- int i = smb2req->current_idx;
uint64_t in_session_id;
uint8_t in_flags;
uint8_t in_security_mode;
if (!NT_STATUS_IS_OK(status)) {
return smbd_smb2_request_error(smb2req, status);
}
- inhdr = (const uint8_t *)smb2req->in.vector[i+0].iov_base;
- inbody = (const uint8_t *)smb2req->in.vector[i+1].iov_base;
+ inhdr = SMBD_SMB2_IN_HDR_PTR(smb2req);
+ inbody = SMBD_SMB2_IN_BODY_PTR(smb2req);
in_session_id = BVAL(inhdr, SMB2_HDR_SESSION_ID);
in_security_length = SVAL(inbody, 0x0E);
in_previous_session_id = BVAL(inbody, 0x10);
- if (in_security_offset != (SMB2_HDR_BODY + smb2req->in.vector[i+1].iov_len)) {
+ if (in_security_offset != (SMB2_HDR_BODY + SMBD_SMB2_IN_BODY_LEN(smb2req))) {
return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
}
- if (in_security_length > smb2req->in.vector[i+2].iov_len) {
+ if (in_security_length > SMBD_SMB2_IN_DYN_LEN(smb2req)) {
return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
}
- in_security_buffer.data = (uint8_t *)smb2req->in.vector[i+2].iov_base;
+ in_security_buffer.data = SMBD_SMB2_IN_DYN_PTR(smb2req);
in_security_buffer.length = in_security_length;
- subreq = smbd_smb2_session_setup_send(smb2req,
- smb2req->sconn->ev_ctx,
- smb2req,
- in_session_id,
- in_flags,
- in_security_mode,
- in_previous_session_id,
- in_security_buffer);
+ subreq = smbd_smb2_session_setup_wrap_send(smb2req,
+ smb2req->sconn->ev_ctx,
+ smb2req,
+ in_session_id,
+ in_flags,
+ in_security_mode,
+ in_previous_session_id,
+ in_security_buffer);
if (subreq == NULL) {
return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
}
struct smbd_smb2_request *smb2req =
tevent_req_callback_data(subreq,
struct smbd_smb2_request);
- int i = smb2req->current_idx;
uint8_t *outhdr;
DATA_BLOB outbody;
DATA_BLOB outdyn;
- uint16_t out_session_flags;
- uint64_t out_session_id;
+ uint16_t out_session_flags = 0;
+ uint64_t out_session_id = 0;
uint16_t out_security_offset;
DATA_BLOB out_security_buffer = data_blob_null;
NTSTATUS status;
NTSTATUS error; /* transport error */
- status = smbd_smb2_session_setup_recv(subreq,
- &out_session_flags,
- smb2req,
- &out_security_buffer,
- &out_session_id);
+ status = smbd_smb2_session_setup_wrap_recv(subreq,
+ &out_session_flags,
+ smb2req,
+ &out_security_buffer,
+ &out_session_id);
TALLOC_FREE(subreq);
if (!NT_STATUS_IS_OK(status) &&
!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
status = nt_status_squash(status);
error = smbd_smb2_request_error(smb2req, status);
if (!NT_STATUS_IS_OK(error)) {
- smbd_server_connection_terminate(smb2req->sconn,
+ smbd_server_connection_terminate(smb2req->xconn,
nt_errstr(error));
return;
}
out_security_offset = SMB2_HDR_BODY + 0x08;
- outhdr = (uint8_t *)smb2req->out.vector[i].iov_base;
+ outhdr = SMBD_SMB2_OUT_HDR_PTR(smb2req);
- outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x08);
+ outbody = smbd_smb2_generate_outbody(smb2req, 0x08);
if (outbody.data == NULL) {
error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
if (!NT_STATUS_IS_OK(error)) {
- smbd_server_connection_terminate(smb2req->sconn,
+ smbd_server_connection_terminate(smb2req->xconn,
nt_errstr(error));
return;
}
error = smbd_smb2_request_done_ex(smb2req, status, outbody, &outdyn,
__location__);
if (!NT_STATUS_IS_OK(error)) {
- smbd_server_connection_terminate(smb2req->sconn,
+ smbd_server_connection_terminate(smb2req->xconn,
nt_errstr(error));
return;
}
}
static NTSTATUS smbd_smb2_auth_generic_return(struct smbXsrv_session *session,
+ struct smbXsrv_session_auth0 **_auth,
struct smbd_smb2_request *smb2req,
uint8_t in_security_mode,
struct auth_session_info *session_info,
bool guest = false;
uint8_t session_key[16];
struct smbXsrv_session *x = session;
- struct smbXsrv_connection *conn = session->connection;
+ struct smbXsrv_session_auth0 *auth = *_auth;
+ struct smbXsrv_connection *xconn = smb2req->xconn;
+ size_t i;
+ struct _derivation {
+ DATA_BLOB label;
+ DATA_BLOB context;
+ };
+ struct {
+ struct _derivation signing;
+ struct _derivation encryption;
+ struct _derivation decryption;
+ struct _derivation application;
+ } derivation = { };
+
+ *_auth = NULL;
+
+ if (xconn->protocol >= PROTOCOL_SMB3_10) {
+ struct smbXsrv_preauth *preauth;
+ struct _derivation *d;
+ DATA_BLOB p;
+ struct hc_sha512state sctx;
+
+ preauth = talloc_move(smb2req, &auth->preauth);
+
+ samba_SHA512_Init(&sctx);
+ samba_SHA512_Update(&sctx, preauth->sha512_value,
+ sizeof(preauth->sha512_value));
+ for (i = 1; i < smb2req->in.vector_count; i++) {
+ samba_SHA512_Update(&sctx,
+ smb2req->in.vector[i].iov_base,
+ smb2req->in.vector[i].iov_len);
+ }
+ samba_SHA512_Final(preauth->sha512_value, &sctx);
+
+ p = data_blob_const(preauth->sha512_value,
+ sizeof(preauth->sha512_value));
+
+ d = &derivation.signing;
+ d->label = data_blob_string_const_null("SMBSigningKey");
+ d->context = p;
+
+ d = &derivation.decryption;
+ d->label = data_blob_string_const_null("SMBC2SCipherKey");
+ d->context = p;
+
+ d = &derivation.encryption;
+ d->label = data_blob_string_const_null("SMBS2CCipherKey");
+ d->context = p;
+
+ d = &derivation.application;
+ d->label = data_blob_string_const_null("SMBAppKey");
+ d->context = p;
+
+ } else if (xconn->protocol >= PROTOCOL_SMB2_24) {
+ struct _derivation *d;
+
+ d = &derivation.signing;
+ d->label = data_blob_string_const_null("SMB2AESCMAC");
+ d->context = data_blob_string_const_null("SmbSign");
+
+ d = &derivation.decryption;
+ d->label = data_blob_string_const_null("SMB2AESCCM");
+ d->context = data_blob_string_const_null("ServerIn ");
+
+ d = &derivation.encryption;
+ d->label = data_blob_string_const_null("SMB2AESCCM");
+ d->context = data_blob_string_const_null("ServerOut");
+
+ d = &derivation.application;
+ d->label = data_blob_string_const_null("SMB2APP");
+ d->context = data_blob_string_const_null("SmbRpc");
+ }
if ((in_security_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) ||
- lp_server_signing() == SMB_SIGNING_REQUIRED) {
- x->global->signing_required = true;
+ (xconn->smb2.server.security_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED))
+ {
+ x->global->signing_flags = SMBXSRV_SIGNING_REQUIRED;
+ }
+
+ if ((lp_smb_encrypt(-1) >= SMB_SIGNING_DESIRED) &&
+ (xconn->smb2.client.capabilities & SMB2_CAP_ENCRYPTION)) {
+ x->global->encryption_flags = SMBXSRV_ENCRYPTION_DESIRED;
+ }
+
+ if (lp_smb_encrypt(-1) == SMB_SIGNING_REQUIRED) {
+ x->global->encryption_flags = SMBXSRV_ENCRYPTION_REQUIRED |
+ SMBXSRV_ENCRYPTION_DESIRED;
}
if (security_session_user_level(session_info, NULL) < SECURITY_USER) {
*out_session_flags |= SMB2_SESSION_FLAG_IS_GUEST;
*out_session_flags |= SMB2_SESSION_FLAG_IS_NULL;
/* force no signing */
- x->global->signing_required = false;
+ x->global->signing_flags &= ~SMBXSRV_SIGNING_REQUIRED;
guest = true;
}
+ if (guest && (x->global->encryption_flags & SMBXSRV_ENCRYPTION_REQUIRED)) {
+ DEBUG(1,("reject guest session as encryption is required\n"));
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ if (xconn->smb2.server.cipher == 0) {
+ if (x->global->encryption_flags & SMBXSRV_ENCRYPTION_REQUIRED) {
+ DEBUG(1,("reject session with dialect[0x%04X] "
+ "as encryption is required\n",
+ xconn->smb2.server.dialect));
+ return NT_STATUS_ACCESS_DENIED;
+ }
+ } else {
+ x->global->channels[0].encryption_cipher = xconn->smb2.server.cipher;
+ }
+
+ if (x->global->encryption_flags & SMBXSRV_ENCRYPTION_DESIRED) {
+ *out_session_flags |= SMB2_SESSION_FLAG_ENCRYPT_DATA;
+ }
+
ZERO_STRUCT(session_key);
memcpy(session_key, session_info->session_key.data,
MIN(session_info->session_key.length, sizeof(session_key)));
sizeof(session_key));
if (x->global->signing_key.data == NULL) {
ZERO_STRUCT(session_key);
- TALLOC_FREE(session);
return NT_STATUS_NO_MEMORY;
}
- if (conn->protocol >= PROTOCOL_SMB2_24) {
- const DATA_BLOB label = data_blob_string_const_null("SMB2AESCMAC");
- const DATA_BLOB context = data_blob_string_const_null("SmbSign");
+ if (xconn->protocol >= PROTOCOL_SMB2_24) {
+ struct _derivation *d = &derivation.signing;
smb2_key_derivation(session_key, sizeof(session_key),
- label.data, label.length,
- context.data, context.length,
+ d->label.data, d->label.length,
+ d->context.data, d->context.length,
x->global->signing_key.data);
}
+ if (xconn->protocol >= PROTOCOL_SMB2_24) {
+ struct _derivation *d = &derivation.decryption;
+
+ x->global->decryption_key = data_blob_talloc(x->global,
+ session_key,
+ sizeof(session_key));
+ if (x->global->decryption_key.data == NULL) {
+ ZERO_STRUCT(session_key);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ smb2_key_derivation(session_key, sizeof(session_key),
+ d->label.data, d->label.length,
+ d->context.data, d->context.length,
+ x->global->decryption_key.data);
+ }
+
+ if (xconn->protocol >= PROTOCOL_SMB2_24) {
+ struct _derivation *d = &derivation.encryption;
+ size_t nonce_size;
+
+ x->global->encryption_key = data_blob_talloc(x->global,
+ session_key,
+ sizeof(session_key));
+ if (x->global->encryption_key.data == NULL) {
+ ZERO_STRUCT(session_key);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ smb2_key_derivation(session_key, sizeof(session_key),
+ d->label.data, d->label.length,
+ d->context.data, d->context.length,
+ x->global->encryption_key.data);
+
+ /*
+ * CCM and GCM algorithms must never have their
+ * nonce wrap, or the security of the whole
+ * communication and the keys is destroyed.
+ * We must drop the connection once we have
+ * transfered too much data.
+ *
+ * NOTE: We assume nonces greater than 8 bytes.
+ */
+ generate_random_buffer((uint8_t *)&x->nonce_high_random,
+ sizeof(x->nonce_high_random));
+ switch (xconn->smb2.server.cipher) {
+ case SMB2_ENCRYPTION_AES128_CCM:
+ nonce_size = AES_CCM_128_NONCE_SIZE;
+ break;
+ case SMB2_ENCRYPTION_AES128_GCM:
+ nonce_size = AES_GCM_128_IV_SIZE;
+ break;
+ default:
+ nonce_size = 0;
+ break;
+ }
+ x->nonce_high_max = SMB2_NONCE_HIGH_MAX(nonce_size);
+ x->nonce_high = 0;
+ x->nonce_low = 0;
+ }
+
x->global->application_key = data_blob_dup_talloc(x->global,
x->global->signing_key);
if (x->global->application_key.data == NULL) {
ZERO_STRUCT(session_key);
- TALLOC_FREE(session);
return NT_STATUS_NO_MEMORY;
}
- if (conn->protocol >= PROTOCOL_SMB2_24) {
- const DATA_BLOB label = data_blob_string_const_null("SMB2APP");
- const DATA_BLOB context = data_blob_string_const_null("SmbRpc");
+ if (xconn->protocol >= PROTOCOL_SMB2_24) {
+ struct _derivation *d = &derivation.application;
smb2_key_derivation(session_key, sizeof(session_key),
- label.data, label.length,
- context.data, context.length,
+ d->label.data, d->label.length,
+ d->context.data, d->context.length,
x->global->application_key.data);
}
ZERO_STRUCT(session_key);
x->global->channels[0].signing_key = data_blob_dup_talloc(x->global->channels,
x->global->signing_key);
if (x->global->channels[0].signing_key.data == NULL) {
- TALLOC_FREE(session);
return NT_STATUS_NO_MEMORY;
}
session_info->session_key = data_blob_dup_talloc(session_info,
x->global->application_key);
if (session_info->session_key.data == NULL) {
- TALLOC_FREE(session);
return NT_STATUS_NO_MEMORY;
}
session->compat = talloc_zero(session, struct user_struct);
if (session->compat == NULL) {
- TALLOC_FREE(session);
return NT_STATUS_NO_MEMORY;
}
session->compat->session = session;
register_homes_share(session_info->unix_info->unix_name);
}
- if (!session_claim(smb2req->sconn, session->compat)) {
- DEBUG(1, ("smb2: Failed to claim session "
- "for vuid=%llu\n",
- (unsigned long long)session->compat->vuid));
- TALLOC_FREE(session);
- return NT_STATUS_LOGON_FAILURE;
- }
-
set_current_user_info(session_info->unix_info->sanitized_username,
session_info->unix_info->unix_name,
session_info->info->domain_name);
reload_services(smb2req->sconn, conn_snum_used, true);
session->status = NT_STATUS_OK;
- session->global->auth_session_info = session_info;
+ session->global->auth_session_info = talloc_move(session->global,
+ &session_info);
session->global->auth_session_info_seqnum += 1;
- session->global->channels[0].auth_session_info_seqnum =
- session->global->auth_session_info_seqnum;
- session->global->expiration_time = gensec_expire_time(session->gensec);
+ for (i=0; i < session->global->num_channels; i++) {
+ struct smbXsrv_channel_global0 *_c =
+ &session->global->channels[i];
+
+ _c->auth_session_info_seqnum =
+ session->global->auth_session_info_seqnum;
+ }
+ session->global->auth_time = timeval_to_nttime(&smb2req->request_time);
+ session->global->expiration_time = gensec_expire_time(auth->gensec);
+
+ if (!session_claim(session)) {
+ DEBUG(1, ("smb2: Failed to claim session "
+ "for vuid=%llu\n",
+ (unsigned long long)session->compat->vuid));
+ return NT_STATUS_LOGON_FAILURE;
+ }
+ TALLOC_FREE(auth);
status = smbXsrv_session_update(session);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("smb2: Failed to update session for vuid=%llu - %s\n",
(unsigned long long)session->compat->vuid,
nt_errstr(status)));
- TALLOC_FREE(session);
return NT_STATUS_LOGON_FAILURE;
}
* we attach the session to the request
* so that the response can be signed
*/
- smb2req->session = session;
if (!guest) {
smb2req->do_signing = true;
}
}
static NTSTATUS smbd_smb2_reauth_generic_return(struct smbXsrv_session *session,
+ struct smbXsrv_session_auth0 **_auth,
struct smbd_smb2_request *smb2req,
struct auth_session_info *session_info,
uint16_t *out_session_flags,
{
NTSTATUS status;
struct smbXsrv_session *x = session;
- struct smbXsrv_connection *conn = session->connection;
+ struct smbXsrv_session_auth0 *auth = *_auth;
+ struct smbXsrv_connection *xconn = smb2req->xconn;
+ size_t i;
+
+ *_auth = NULL;
data_blob_clear_free(&session_info->session_key);
session_info->session_key = data_blob_dup_talloc(session_info,
x->global->application_key);
if (session_info->session_key.data == NULL) {
- TALLOC_FREE(session);
return NT_STATUS_NO_MEMORY;
}
session->status = NT_STATUS_OK;
TALLOC_FREE(session->global->auth_session_info);
- session->global->auth_session_info = session_info;
+ session->global->auth_session_info = talloc_move(session->global,
+ &session_info);
session->global->auth_session_info_seqnum += 1;
- session->global->channels[0].auth_session_info_seqnum =
- session->global->auth_session_info_seqnum;
- session->global->expiration_time = gensec_expire_time(session->gensec);
+ for (i=0; i < session->global->num_channels; i++) {
+ struct smbXsrv_channel_global0 *_c =
+ &session->global->channels[i];
+
+ _c->auth_session_info_seqnum =
+ session->global->auth_session_info_seqnum;
+ }
+ session->global->auth_time = timeval_to_nttime(&smb2req->request_time);
+ session->global->expiration_time = gensec_expire_time(auth->gensec);
+ TALLOC_FREE(auth);
status = smbXsrv_session_update(session);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("smb2: Failed to update session for vuid=%llu - %s\n",
(unsigned long long)session->compat->vuid,
nt_errstr(status)));
- TALLOC_FREE(session);
return NT_STATUS_LOGON_FAILURE;
}
- conn_clear_vuid_caches(conn->sconn, session->compat->vuid);
+ conn_clear_vuid_caches(xconn->client->sconn, session->compat->vuid);
- /*
- * we attach the session to the request
- * so that the response can be signed
- */
- smb2req->session = session;
- smb2req->do_signing = true;
+ if (security_session_user_level(session_info, NULL) >= SECURITY_USER) {
+ smb2req->do_signing = true;
+ }
- global_client_caps |= (CAP_LEVEL_II_OPLOCKS|CAP_STATUS32);
+ *out_session_id = session->global->session_wire_id;
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS smbd_smb2_bind_auth_return(struct smbXsrv_session *session,
+ struct smbXsrv_session_auth0 **_auth,
+ struct smbd_smb2_request *smb2req,
+ struct auth_session_info *session_info,
+ uint16_t *out_session_flags,
+ uint64_t *out_session_id)
+{
+ NTSTATUS status;
+ struct smbXsrv_session *x = session;
+ struct smbXsrv_session_auth0 *auth = *_auth;
+ struct smbXsrv_connection *xconn = smb2req->xconn;
+ struct smbXsrv_channel_global0 *c = NULL;
+ uint8_t session_key[16];
+ size_t i;
+ struct _derivation {
+ DATA_BLOB label;
+ DATA_BLOB context;
+ };
+ struct {
+ struct _derivation signing;
+ } derivation = { };
+ bool ok;
+
+ *_auth = NULL;
+
+ if (xconn->protocol >= PROTOCOL_SMB3_10) {
+ struct smbXsrv_preauth *preauth;
+ struct _derivation *d;
+ DATA_BLOB p;
+ struct hc_sha512state sctx;
+
+ preauth = talloc_move(smb2req, &auth->preauth);
+
+ samba_SHA512_Init(&sctx);
+ samba_SHA512_Update(&sctx, preauth->sha512_value,
+ sizeof(preauth->sha512_value));
+ for (i = 1; i < smb2req->in.vector_count; i++) {
+ samba_SHA512_Update(&sctx,
+ smb2req->in.vector[i].iov_base,
+ smb2req->in.vector[i].iov_len);
+ }
+ samba_SHA512_Final(preauth->sha512_value, &sctx);
+
+ p = data_blob_const(preauth->sha512_value,
+ sizeof(preauth->sha512_value));
+
+ d = &derivation.signing;
+ d->label = data_blob_string_const_null("SMBSigningKey");
+ d->context = p;
+
+ } else if (xconn->protocol >= PROTOCOL_SMB2_24) {
+ struct _derivation *d;
+
+ d = &derivation.signing;
+ d->label = data_blob_string_const_null("SMB2AESCMAC");
+ d->context = data_blob_string_const_null("SmbSign");
+ }
+
+ status = smbXsrv_session_find_channel(session, xconn, &c);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ ok = security_token_is_sid(session_info->security_token,
+ &x->global->auth_session_info->security_token->sids[0]);
+ if (!ok) {
+ return NT_STATUS_NOT_SUPPORTED;
+ }
+
+ if (session_info->session_key.length == 0) {
+ /* See [MS-SMB2] 3.3.5.2.4 for the return code. */
+ return NT_STATUS_NOT_SUPPORTED;
+ }
+
+ ZERO_STRUCT(session_key);
+ memcpy(session_key, session_info->session_key.data,
+ MIN(session_info->session_key.length, sizeof(session_key)));
+
+ c->signing_key = data_blob_talloc(x->global,
+ session_key,
+ sizeof(session_key));
+ if (c->signing_key.data == NULL) {
+ ZERO_STRUCT(session_key);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (xconn->protocol >= PROTOCOL_SMB2_24) {
+ struct _derivation *d = &derivation.signing;
+
+ smb2_key_derivation(session_key, sizeof(session_key),
+ d->label.data, d->label.length,
+ d->context.data, d->context.length,
+ c->signing_key.data);
+ }
+ ZERO_STRUCT(session_key);
+
+ TALLOC_FREE(auth);
+ status = smbXsrv_session_update(session);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("smb2: Failed to update session for vuid=%llu - %s\n",
+ (unsigned long long)session->compat->vuid,
+ nt_errstr(status)));
+ return NT_STATUS_LOGON_FAILURE;
+ }
*out_session_id = session->global->session_wire_id;
uint64_t in_previous_session_id;
DATA_BLOB in_security_buffer;
struct smbXsrv_session *session;
+ struct smbXsrv_session_auth0 *auth;
struct auth_session_info *session_info;
uint16_t out_session_flags;
DATA_BLOB out_security_buffer;
uint64_t out_session_id;
};
-static int smbd_smb2_session_setup_state_destructor(struct smbd_smb2_session_setup_state *state)
-{
- /*
- * if state->session is not NULL,
- * we remove the session on failure
- */
- TALLOC_FREE(state->session);
- return 0;
-}
-
static void smbd_smb2_session_setup_gensec_done(struct tevent_req *subreq);
static void smbd_smb2_session_setup_previous_done(struct tevent_req *subreq);
+static void smbd_smb2_session_setup_auth_return(struct tevent_req *req);
static struct tevent_req *smbd_smb2_session_setup_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
NTSTATUS status;
NTTIME now = timeval_to_nttime(&smb2req->request_time);
struct tevent_req *subreq;
+ struct smbXsrv_channel_global0 *c = NULL;
+ enum security_user_level seclvl;
req = tevent_req_create(mem_ctx, &state,
struct smbd_smb2_session_setup_state);
state->in_previous_session_id = in_previous_session_id;
state->in_security_buffer = in_security_buffer;
- talloc_set_destructor(state, smbd_smb2_session_setup_state_destructor);
+ if (in_flags & SMB2_SESSION_FLAG_BINDING) {
+ if (smb2req->xconn->protocol < PROTOCOL_SMB2_22) {
+ tevent_req_nterror(req, NT_STATUS_REQUEST_NOT_ACCEPTED);
+ return tevent_req_post(req, ev);
+ }
+
+ if (!smb2req->xconn->client->server_multi_channel_enabled) {
+ tevent_req_nterror(req, NT_STATUS_REQUEST_NOT_ACCEPTED);
+ return tevent_req_post(req, ev);
+ }
+
+ if (in_session_id == 0) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
+ }
+
+ if (smb2req->session == NULL) {
+ tevent_req_nterror(req, NT_STATUS_USER_SESSION_DELETED);
+ return tevent_req_post(req, ev);
+ }
+
+ if (!smb2req->do_signing) {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
+ }
+
+ status = smbXsrv_session_find_channel(smb2req->session,
+ smb2req->xconn,
+ &c);
+ if (NT_STATUS_IS_OK(status)) {
+ if (c->signing_key.length == 0) {
+ goto auth;
+ }
+ tevent_req_nterror(req, NT_STATUS_REQUEST_NOT_ACCEPTED);
+ return tevent_req_post(req, ev);
+ }
+
+ /*
+ * OLD: 3.00 NEW 3.02 => INVALID_PARAMETER
+ * OLD: 3.02 NEW 3.00 => INVALID_PARAMETER
+ * OLD: 2.10 NEW 3.02 => ACCESS_DENIED
+ * OLD: 3.02 NEW 2.10 => ACCESS_DENIED
+ */
+ if (smb2req->session->global->connection_dialect
+ < SMB2_DIALECT_REVISION_222)
+ {
+ tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
+ return tevent_req_post(req, ev);
+ }
+ if (smb2req->xconn->smb2.server.dialect
+ < SMB2_DIALECT_REVISION_222)
+ {
+ tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
+ return tevent_req_post(req, ev);
+ }
+ if (smb2req->session->global->connection_dialect
+ != smb2req->xconn->smb2.server.dialect)
+ {
+ tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+ return tevent_req_post(req, ev);
+ }
+
+ seclvl = security_session_user_level(
+ smb2req->session->global->auth_session_info,
+ NULL);
+ if (seclvl < SECURITY_USER) {
+ tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
+ return tevent_req_post(req, ev);
+ }
+
+ status = smbXsrv_session_add_channel(smb2req->session,
+ smb2req->xconn,
+ &c);
+ if (!NT_STATUS_IS_OK(status)) {
+ tevent_req_nterror(req, status);
+ return tevent_req_post(req, ev);
+ }
+
+ status = smbXsrv_session_update(smb2req->session);
+ if (!NT_STATUS_IS_OK(status)) {
+ tevent_req_nterror(req, status);
+ return tevent_req_post(req, ev);
+ }
+ }
+
+auth:
if (state->in_session_id == 0) {
/* create a new session */
- status = smbXsrv_session_create(state->smb2req->sconn->conn,
+ status = smbXsrv_session_create(state->smb2req->xconn,
now, &state->session);
if (tevent_req_nterror(req, status)) {
return tevent_req_post(req, ev);
}
+ smb2req->session = state->session;
} else {
- status = smb2srv_session_lookup(state->smb2req->sconn->conn,
- state->in_session_id, now,
- &state->session);
+ if (smb2req->session == NULL) {
+ tevent_req_nterror(req, NT_STATUS_USER_SESSION_DELETED);
+ return tevent_req_post(req, ev);
+ }
+
+ state->session = smb2req->session;
+ status = state->session->status;
if (NT_STATUS_EQUAL(status, NT_STATUS_NETWORK_SESSION_EXPIRED)) {
status = NT_STATUS_OK;
}
- if (NT_STATUS_IS_OK(status)) {
+ if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ status = NT_STATUS_OK;
+ }
+ if (tevent_req_nterror(req, status)) {
+ return tevent_req_post(req, ev);
+ }
+ if (!(in_flags & SMB2_SESSION_FLAG_BINDING)) {
state->session->status = NT_STATUS_MORE_PROCESSING_REQUIRED;
- status = NT_STATUS_MORE_PROCESSING_REQUIRED;
- TALLOC_FREE(state->session->gensec);
}
- if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- tevent_req_nterror(req, status);
+ }
+
+ status = smbXsrv_session_find_channel(smb2req->session,
+ smb2req->xconn, &c);
+ if (!NT_STATUS_IS_OK(status)) {
+ tevent_req_nterror(req, status);
+ return tevent_req_post(req, ev);
+ }
+
+ status = smbXsrv_session_find_auth(state->session, smb2req->xconn,
+ now, &state->auth);
+ if (!NT_STATUS_IS_OK(status)) {
+ status = smbXsrv_session_create_auth(state->session,
+ smb2req->xconn, now,
+ in_flags, in_security_mode,
+ &state->auth);
+ if (tevent_req_nterror(req, status)) {
return tevent_req_post(req, ev);
}
}
- if (state->session->gensec == NULL) {
- status = auth_generic_prepare(state->session,
- state->session->connection->remote_address,
- &state->session->gensec);
+ if (state->auth->gensec == NULL) {
+ status = auth_generic_prepare(state->auth,
+ state->smb2req->xconn->remote_address,
+ &state->auth->gensec);
if (tevent_req_nterror(req, status)) {
return tevent_req_post(req, ev);
}
- gensec_want_feature(state->session->gensec, GENSEC_FEATURE_SESSION_KEY);
- gensec_want_feature(state->session->gensec, GENSEC_FEATURE_UNIX_TOKEN);
+ gensec_want_feature(state->auth->gensec, GENSEC_FEATURE_SESSION_KEY);
+ gensec_want_feature(state->auth->gensec, GENSEC_FEATURE_UNIX_TOKEN);
- status = gensec_start_mech_by_oid(state->session->gensec,
+ status = gensec_start_mech_by_oid(state->auth->gensec,
GENSEC_OID_SPNEGO);
if (tevent_req_nterror(req, status)) {
return tevent_req_post(req, ev);
}
}
+ status = smbXsrv_session_update(state->session);
+ if (tevent_req_nterror(req, status)) {
+ return tevent_req_post(req, ev);
+ }
+
become_root();
subreq = gensec_update_send(state, state->ev,
- state->session->gensec,
+ state->auth->gensec,
state->in_security_buffer);
unbecome_root();
if (tevent_req_nomem(subreq, req)) {
if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
state->out_session_id = state->session->global->session_wire_id;
- /* we want to keep the session */
- state->session = NULL;
+ state->smb2req->preauth = state->auth->preauth;
tevent_req_nterror(req, status);
return;
}
- status = gensec_session_info(state->session->gensec,
- state->session->global,
+ status = gensec_session_info(state->auth->gensec,
+ state,
&state->session_info);
if (tevent_req_nterror(req, status)) {
return;
state->in_previous_session_id))
{
subreq = smb2srv_session_close_previous_send(state, state->ev,
- state->session->connection,
+ state->smb2req->xconn,
state->session_info,
state->in_previous_session_id,
state->session->global->session_wire_id);
return;
}
+ smbd_smb2_session_setup_auth_return(req);
+}
+
+static void smbd_smb2_session_setup_previous_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req =
+ tevent_req_callback_data(subreq,
+ struct tevent_req);
+ NTSTATUS status;
+
+ status = smb2srv_session_close_previous_recv(subreq);
+ TALLOC_FREE(subreq);
+ if (tevent_req_nterror(req, status)) {
+ return;
+ }
+
+ smbd_smb2_session_setup_auth_return(req);
+}
+
+static void smbd_smb2_session_setup_auth_return(struct tevent_req *req)
+{
+ struct smbd_smb2_session_setup_state *state =
+ tevent_req_data(req,
+ struct smbd_smb2_session_setup_state);
+ NTSTATUS status;
+
+ if (state->in_flags & SMB2_SESSION_FLAG_BINDING) {
+ status = smbd_smb2_bind_auth_return(state->session,
+ &state->auth,
+ state->smb2req,
+ state->session_info,
+ &state->out_session_flags,
+ &state->out_session_id);
+ if (tevent_req_nterror(req, status)) {
+ return;
+ }
+ tevent_req_done(req);
+ return;
+ }
+
if (state->session->global->auth_session_info != NULL) {
status = smbd_smb2_reauth_generic_return(state->session,
+ &state->auth,
state->smb2req,
state->session_info,
&state->out_session_flags,
if (tevent_req_nterror(req, status)) {
return;
}
- /* we want to keep the session */
- state->session = NULL;
tevent_req_done(req);
return;
}
status = smbd_smb2_auth_generic_return(state->session,
+ &state->auth,
state->smb2req,
state->in_security_mode,
state->session_info,
return;
}
- /* we want to keep the session */
- state->session = NULL;
tevent_req_done(req);
return;
}
-static void smbd_smb2_session_setup_previous_done(struct tevent_req *subreq)
+static NTSTATUS smbd_smb2_session_setup_recv(struct tevent_req *req,
+ uint16_t *out_session_flags,
+ TALLOC_CTX *mem_ctx,
+ DATA_BLOB *out_security_buffer,
+ uint64_t *out_session_id)
+{
+ struct smbd_smb2_session_setup_state *state =
+ tevent_req_data(req,
+ struct smbd_smb2_session_setup_state);
+ NTSTATUS status;
+
+ if (tevent_req_is_nterror(req, &status)) {
+ if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ tevent_req_received(req);
+ return nt_status_squash(status);
+ }
+ } else {
+ status = NT_STATUS_OK;
+ }
+
+ *out_session_flags = state->out_session_flags;
+ *out_security_buffer = state->out_security_buffer;
+ *out_session_id = state->out_session_id;
+
+ talloc_steal(mem_ctx, out_security_buffer->data);
+ tevent_req_received(req);
+ return status;
+}
+
+struct smbd_smb2_session_setup_wrap_state {
+ struct tevent_context *ev;
+ struct smbd_smb2_request *smb2req;
+ uint64_t in_session_id;
+ uint8_t in_flags;
+ uint8_t in_security_mode;
+ uint64_t in_previous_session_id;
+ DATA_BLOB in_security_buffer;
+ uint16_t out_session_flags;
+ DATA_BLOB out_security_buffer;
+ uint64_t out_session_id;
+ NTSTATUS error;
+};
+
+static void smbd_smb2_session_setup_wrap_setup_done(struct tevent_req *subreq);
+static void smbd_smb2_session_setup_wrap_shutdown_done(struct tevent_req *subreq);
+
+static struct tevent_req *smbd_smb2_session_setup_wrap_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct smbd_smb2_request *smb2req,
+ uint64_t in_session_id,
+ uint8_t in_flags,
+ uint8_t in_security_mode,
+ uint64_t in_previous_session_id,
+ DATA_BLOB in_security_buffer)
+{
+ struct tevent_req *req;
+ struct smbd_smb2_session_setup_wrap_state *state;
+ struct tevent_req *subreq;
+
+ req = tevent_req_create(mem_ctx, &state,
+ struct smbd_smb2_session_setup_wrap_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ state->ev = ev;
+ state->smb2req = smb2req;
+ state->in_session_id = in_session_id;
+ state->in_flags = in_flags;
+ state->in_security_mode = in_security_mode;
+ state->in_previous_session_id = in_previous_session_id;
+ state->in_security_buffer = in_security_buffer;
+
+ subreq = smbd_smb2_session_setup_send(state, state->ev,
+ state->smb2req,
+ state->in_session_id,
+ state->in_flags,
+ state->in_security_mode,
+ state->in_previous_session_id,
+ state->in_security_buffer);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq,
+ smbd_smb2_session_setup_wrap_setup_done, req);
+
+ return req;
+}
+
+static void smbd_smb2_session_setup_wrap_setup_done(struct tevent_req *subreq)
{
struct tevent_req *req =
tevent_req_callback_data(subreq,
struct tevent_req);
- struct smbd_smb2_session_setup_state *state =
+ struct smbd_smb2_session_setup_wrap_state *state =
tevent_req_data(req,
- struct smbd_smb2_session_setup_state);
+ struct smbd_smb2_session_setup_wrap_state);
NTSTATUS status;
- status = smb2srv_session_close_previous_recv(subreq);
+ status = smbd_smb2_session_setup_recv(subreq,
+ &state->out_session_flags,
+ state,
+ &state->out_security_buffer,
+ &state->out_session_id);
TALLOC_FREE(subreq);
- if (tevent_req_nterror(req, status)) {
+ if (NT_STATUS_IS_OK(status)) {
+ tevent_req_done(req);
+ return;
+ }
+ if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ tevent_req_nterror(req, status);
return;
}
- if (state->session->global->auth_session_info != NULL) {
- status = smbd_smb2_reauth_generic_return(state->session,
- state->smb2req,
- state->session_info,
- &state->out_session_flags,
- &state->out_session_id);
- if (tevent_req_nterror(req, status)) {
- return;
- }
- /* we want to keep the session */
- state->session = NULL;
- tevent_req_done(req);
+ if (state->smb2req->session == NULL) {
+ tevent_req_nterror(req, status);
return;
}
- status = smbd_smb2_auth_generic_return(state->session,
- state->smb2req,
- state->in_security_mode,
- state->session_info,
- &state->out_session_flags,
- &state->out_session_id);
+ state->error = status;
+
+ subreq = smb2srv_session_shutdown_send(state, state->ev,
+ state->smb2req->session,
+ state->smb2req);
+ if (tevent_req_nomem(subreq, req)) {
+ return;
+ }
+ tevent_req_set_callback(subreq,
+ smbd_smb2_session_setup_wrap_shutdown_done,
+ req);
+}
+
+static void smbd_smb2_session_setup_wrap_shutdown_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req =
+ tevent_req_callback_data(subreq,
+ struct tevent_req);
+ struct smbd_smb2_session_setup_wrap_state *state =
+ tevent_req_data(req,
+ struct smbd_smb2_session_setup_wrap_state);
+ NTSTATUS status;
+
+ status = smb2srv_session_shutdown_recv(subreq);
+ TALLOC_FREE(subreq);
if (tevent_req_nterror(req, status)) {
return;
}
- /* we want to keep the session */
- state->session = NULL;
- tevent_req_done(req);
- return;
+ /*
+ * we may need to sign the response, so we need to keep
+ * the session until the response is sent to the wire.
+ */
+ talloc_steal(state->smb2req, state->smb2req->session);
+
+ tevent_req_nterror(req, state->error);
}
-static NTSTATUS smbd_smb2_session_setup_recv(struct tevent_req *req,
+static NTSTATUS smbd_smb2_session_setup_wrap_recv(struct tevent_req *req,
uint16_t *out_session_flags,
TALLOC_CTX *mem_ctx,
DATA_BLOB *out_security_buffer,
uint64_t *out_session_id)
{
- struct smbd_smb2_session_setup_state *state =
+ struct smbd_smb2_session_setup_wrap_state *state =
tevent_req_data(req,
- struct smbd_smb2_session_setup_state);
+ struct smbd_smb2_session_setup_wrap_state);
NTSTATUS status;
if (tevent_req_is_nterror(req, &status)) {
return status;
}
+static struct tevent_req *smbd_smb2_logoff_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct smbd_smb2_request *smb2req);
+static NTSTATUS smbd_smb2_logoff_recv(struct tevent_req *req);
+static void smbd_smb2_request_logoff_done(struct tevent_req *subreq);
+
NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req)
{
NTSTATUS status;
- DATA_BLOB outbody;
+ struct tevent_req *subreq = NULL;
status = smbd_smb2_request_verify_sizes(req, 0x04);
if (!NT_STATUS_IS_OK(status)) {
return smbd_smb2_request_error(req, status);
}
+ subreq = smbd_smb2_logoff_send(req, req->sconn->ev_ctx, req);
+ if (subreq == NULL) {
+ return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
+ }
+ tevent_req_set_callback(subreq, smbd_smb2_request_logoff_done, req);
+
/*
- * TODO: cancel all outstanding requests on the session
+ * Wait a long time before going async on this to allow
+ * requests we're waiting on to finish. Set timeout to 10 secs.
*/
- status = smbXsrv_session_logoff(req->session);
+ return smbd_smb2_request_pending_queue(req, subreq, 10000000);
+}
+
+static void smbd_smb2_request_logoff_done(struct tevent_req *subreq)
+{
+ struct smbd_smb2_request *smb2req =
+ tevent_req_callback_data(subreq,
+ struct smbd_smb2_request);
+ DATA_BLOB outbody;
+ NTSTATUS status;
+ NTSTATUS error;
+
+ status = smbd_smb2_logoff_recv(subreq);
+ TALLOC_FREE(subreq);
if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0, ("smbd_smb2_request_process_logoff: "
- "smbXsrv_session_logoff() failed: %s\n",
- nt_errstr(status)));
- /*
- * If we hit this case, there is something completely
- * wrong, so we better disconnect the transport connection.
- */
- return status;
+ error = smbd_smb2_request_error(smb2req, status);
+ if (!NT_STATUS_IS_OK(error)) {
+ smbd_server_connection_terminate(smb2req->xconn,
+ nt_errstr(error));
+ return;
+ }
+ return;
}
+ outbody = smbd_smb2_generate_outbody(smb2req, 0x04);
+ if (outbody.data == NULL) {
+ error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
+ if (!NT_STATUS_IS_OK(error)) {
+ smbd_server_connection_terminate(smb2req->xconn,
+ nt_errstr(error));
+ return;
+ }
+ return;
+ }
+
+ SSVAL(outbody.data, 0x00, 0x04); /* struct size */
+ SSVAL(outbody.data, 0x02, 0); /* reserved */
+
+ error = smbd_smb2_request_done(smb2req, outbody, NULL);
+ if (!NT_STATUS_IS_OK(error)) {
+ smbd_server_connection_terminate(smb2req->xconn,
+ nt_errstr(error));
+ return;
+ }
+}
+
+struct smbd_smb2_logoff_state {
+ struct smbd_smb2_request *smb2req;
+};
+
+static void smbd_smb2_logoff_shutdown_done(struct tevent_req *subreq);
+
+static struct tevent_req *smbd_smb2_logoff_send(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct smbd_smb2_request *smb2req)
+{
+ struct tevent_req *req;
+ struct smbd_smb2_logoff_state *state;
+ struct tevent_req *subreq;
+
+ req = tevent_req_create(mem_ctx, &state,
+ struct smbd_smb2_logoff_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ state->smb2req = smb2req;
+
+ subreq = smb2srv_session_shutdown_send(state, ev,
+ smb2req->session,
+ smb2req);
+ if (tevent_req_nomem(subreq, req)) {
+ return tevent_req_post(req, ev);
+ }
+ tevent_req_set_callback(subreq, smbd_smb2_logoff_shutdown_done, req);
+
+ return req;
+}
+
+static void smbd_smb2_logoff_shutdown_done(struct tevent_req *subreq)
+{
+ struct tevent_req *req = tevent_req_callback_data(
+ subreq, struct tevent_req);
+ struct smbd_smb2_logoff_state *state = tevent_req_data(
+ req, struct smbd_smb2_logoff_state);
+ NTSTATUS status;
+
+ status = smb2srv_session_shutdown_recv(subreq);
+ if (tevent_req_nterror(req, status)) {
+ return;
+ }
+ TALLOC_FREE(subreq);
+
/*
- * we may need to sign the response, so we need to keep
- * the session until the response is sent to the wire.
+ * As we've been awoken, we may have changed
+ * uid in the meantime. Ensure we're still
+ * root (SMB2_OP_LOGOFF has .as_root = true).
*/
- talloc_steal(req, req->session);
+ change_to_root_user();
- outbody = data_blob_talloc(req->out.vector, NULL, 0x04);
- if (outbody.data == NULL) {
- return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
+ status = smbXsrv_session_logoff(state->smb2req->session);
+ if (tevent_req_nterror(req, status)) {
+ return;
}
- SSVAL(outbody.data, 0x00, 0x04); /* struct size */
- SSVAL(outbody.data, 0x02, 0); /* reserved */
+ /*
+ * we may need to sign the response, so we need to keep
+ * the session until the response is sent to the wire.
+ */
+ talloc_steal(state->smb2req, state->smb2req->session);
+
+ tevent_req_done(req);
+}
- return smbd_smb2_request_done(req, outbody, NULL);
+static NTSTATUS smbd_smb2_logoff_recv(struct tevent_req *req)
+{
+ return tevent_req_simple_recv_ntstatus(req);
}
git.samba.org / samba.git / blobdiff