*/
#include "includes.h"
+#include "system/filesys.h"
#include "srv_pipe_internal.h"
-#include "../librpc/gen_ndr/ndr_schannel.h"
-#include "../libcli/auth/schannel.h"
-#include "../libcli/auth/spnego.h"
-#include "../libcli/auth/ntlmssp.h"
-#include "ntlmssp_wrap.h"
+#include "../librpc/gen_ndr/dcerpc.h"
+#include "../librpc/rpc/rpc_common.h"
+#include "dcesrv_auth_generic.h"
#include "rpc_server.h"
+#include "rpc_dce.h"
+#include "smbd/smbd.h"
+#include "auth.h"
+#include "ntdomain.h"
+#include "rpc_server/srv_pipe.h"
+#include "rpc_server/rpc_contexts.h"
+#include "lib/param/param.h"
+#include "librpc/ndr/ndr_table.h"
+#include "auth/gensec/gensec.h"
+#include "librpc/ndr/ndr_dcerpc.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_RPC_SRV
+static NTSTATUS pipe_auth_verify_final(struct pipes_struct *p);
+
/**
* Dump everything from the start of the end up of the provided data
* into a file, but only at debug level >= 50
TALLOC_FREE(fname);
}
-static void free_pipe_ntlmssp_auth_data(struct pipe_auth_data *auth)
-{
- TALLOC_FREE(auth->a_u.auth_ntlmssp_state);
-}
-
-static void free_pipe_schannel_auth_data(struct pipe_auth_data *auth)
-{
- TALLOC_FREE(auth->a_u.schannel_auth);
-}
-
-static void free_pipe_auth_data(struct pipe_auth_data *auth)
-{
- if (auth->auth_data_free_func) {
- (*auth->auth_data_free_func)(auth);
- auth->auth_data_free_func = NULL;
- }
-}
-
static DATA_BLOB generic_session_key(void)
{
- return data_blob("SystemLibraryDTC", 16);
+ return data_blob_const("SystemLibraryDTC", 16);
}
/*******************************************************************
Generate the next PDU to be returned from the data.
********************************************************************/
-static bool create_next_packet(TALLOC_CTX *mem_ctx,
- struct pipe_auth_data *auth,
- uint32_t call_id,
- DATA_BLOB *rdata,
- size_t data_sent_length,
- DATA_BLOB *frag,
- size_t *pdu_size)
+static NTSTATUS create_next_packet(TALLOC_CTX *mem_ctx,
+ struct pipe_auth_data *auth,
+ uint32_t call_id,
+ DATA_BLOB *rdata,
+ size_t data_sent_length,
+ DATA_BLOB *frag,
+ size_t *pdu_size)
{
union dcerpc_payload u;
uint8_t pfc_flags;
- size_t data_len_left;
- size_t data_len;
- size_t max_len;
+ size_t data_left;
+ size_t data_to_send;
+ size_t frag_len;
size_t pad_len = 0;
size_t auth_len = 0;
NTSTATUS status;
- switch (auth->auth_level) {
- case DCERPC_AUTH_LEVEL_NONE:
- case DCERPC_AUTH_LEVEL_CONNECT:
- /* This is incorrect for auth level connect. Fixme. JRA */
-
- /* No authentication done. */
- break;
-
- case DCERPC_AUTH_LEVEL_CALL:
- case DCERPC_AUTH_LEVEL_PACKET:
- case DCERPC_AUTH_LEVEL_INTEGRITY:
- case DCERPC_AUTH_LEVEL_PRIVACY:
-
- switch(auth->auth_type) {
- case DCERPC_AUTH_TYPE_NTLMSSP:
- auth_len = NTLMSSP_SIG_SIZE;
- break;
- case DCERPC_AUTH_TYPE_SPNEGO:
- if (auth->spnego_type !=
- PIPE_AUTH_TYPE_SPNEGO_NTLMSSP) {
- return false;
- }
- auth_len = NTLMSSP_SIG_SIZE;
- break;
-
- case DCERPC_AUTH_TYPE_SCHANNEL:
- auth_len = NL_AUTH_SIGNATURE_SIZE;
- break;
-
- default:
- return false;
- }
-
- break;
-
- default:
- return false;
- }
-
ZERO_STRUCT(u.response);
/* Set up rpc packet pfc flags. */
}
/* Work out how much we can fit in a single PDU. */
- data_len_left = rdata->length - data_sent_length;
+ data_left = rdata->length - data_sent_length;
/* Ensure there really is data left to send. */
- if (!data_len_left) {
+ if (!data_left) {
DEBUG(0, ("No data left to send !\n"));
- return false;
- }
-
- /* Max space available - not including padding. */
- if (auth_len) {
- max_len = RPC_MAX_PDU_FRAG_LEN
- - DCERPC_RESPONSE_LENGTH
- - DCERPC_AUTH_TRAILER_LENGTH
- - auth_len;
- } else {
- max_len = RPC_MAX_PDU_FRAG_LEN - DCERPC_RESPONSE_LENGTH;
+ return NT_STATUS_BUFFER_TOO_SMALL;
}
- /*
- * The amount we send is the minimum of the max_len
- * and the amount left to send.
- */
- data_len = MIN(data_len_left, max_len);
-
- if (auth_len) {
- /* Work out any padding alignment requirements. */
- pad_len = (DCERPC_RESPONSE_LENGTH + data_len) %
- SERVER_NDR_PADDING_SIZE;
- if (pad_len) {
- pad_len = SERVER_NDR_PADDING_SIZE - pad_len;
- DEBUG(10, ("Padding size is: %d\n", (int)pad_len));
- /* If we're over filling the packet, we need to make
- * space for the padding at the end of the data. */
- if (data_len + pad_len > max_len) {
- data_len -= SERVER_NDR_PADDING_SIZE;
- }
- }
+ status = dcerpc_guess_sizes(auth,
+ DCERPC_RESPONSE_LENGTH,
+ data_left,
+ RPC_MAX_PDU_FRAG_LEN,
+ SERVER_NDR_PADDING_SIZE,
+ &data_to_send, &frag_len,
+ &auth_len, &pad_len);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
}
/* Set up the alloc hint. This should be the data left to send. */
- u.response.alloc_hint = data_len_left;
+ u.response.alloc_hint = data_left;
/* Work out if this PDU will be the last. */
- if (data_sent_length + data_len >= rdata->length) {
+ if (data_sent_length + data_to_send >= rdata->length) {
pfc_flags |= DCERPC_PFC_FLAG_LAST;
}
/* Prepare data to be NDR encoded. */
u.response.stub_and_verifier =
- data_blob_const(rdata->data + data_sent_length, data_len);
+ data_blob_const(rdata->data + data_sent_length, data_to_send);
/* Store the packet in the data stream. */
status = dcerpc_push_ncacn_packet(mem_ctx, DCERPC_PKT_RESPONSE,
&u, frag);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("Failed to marshall RPC Packet.\n"));
- return false;
+ return status;
}
if (auth_len) {
status = dcerpc_add_auth_footer(auth, pad_len, frag);
if (!NT_STATUS_IS_OK(status)) {
data_blob_free(frag);
- return false;
+ return status;
}
}
- *pdu_size = data_len;
- return true;
+ *pdu_size = data_to_send;
+ return NT_STATUS_OK;
}
/*******************************************************************
bool create_next_pdu(struct pipes_struct *p)
{
- size_t pdu_size;
- bool ret;
+ size_t pdu_size = 0;
+ NTSTATUS status;
/*
* If we're in the fault state, keep returning fault PDU's until
* the pipe gets closed. JRA.
*/
if (p->fault_state) {
- setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
+ setup_fault_pdu(p, NT_STATUS(p->fault_state));
return true;
}
- ret = create_next_packet(p->mem_ctx, &p->auth, p->call_id,
- &p->out_data.rdata,
- p->out_data.data_sent_length,
- &p->out_data.frag, &pdu_size);
- if (!ret) {
- DEBUG(0, ("Invalid internal auth level %u / type %u\n",
+ status = create_next_packet(p->mem_ctx, &p->auth,
+ p->call_id, &p->out_data.rdata,
+ p->out_data.data_sent_length,
+ &p->out_data.frag, &pdu_size);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("Failed to create packet with error %s, "
+ "(auth level %u / type %u)\n",
+ nt_errstr(status),
(unsigned int)p->auth.auth_level,
(unsigned int)p->auth.auth_type));
return false;
return true;
}
-/*******************************************************************
- Process an NTLMSSP authentication response.
- If this function succeeds, the user has been authenticated
- and their domain, name and calling workstation stored in
- the pipe struct.
-*******************************************************************/
-
-static bool pipe_ntlmssp_verify_final(struct pipes_struct *p,
- DATA_BLOB *p_resp_blob)
-{
- DATA_BLOB session_key, reply;
- NTSTATUS status;
- struct auth_ntlmssp_state *a = p->auth.a_u.auth_ntlmssp_state;
- bool ret;
-
- DEBUG(5,("pipe_ntlmssp_verify_final: pipe %s checking user details\n",
- get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
-
- ZERO_STRUCT(reply);
-
- /* this has to be done as root in order to verify the password */
- become_root();
- status = auth_ntlmssp_update(a, *p_resp_blob, &reply);
- unbecome_root();
-
- /* Don't generate a reply. */
- data_blob_free(&reply);
-
- if (!NT_STATUS_IS_OK(status)) {
- return False;
- }
-
- /* Finally - if the pipe negotiated integrity (sign) or privacy (seal)
- ensure the underlying NTLMSSP flags are also set. If not we should
- refuse the bind. */
-
- if (p->auth.auth_level == DCERPC_AUTH_LEVEL_INTEGRITY) {
- if (!auth_ntlmssp_negotiated_sign(a)) {
- DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet integrity requested "
- "but client declined signing.\n",
- get_pipe_name_from_syntax(talloc_tos(),
- &p->syntax)));
- return False;
- }
- }
- if (p->auth.auth_level == DCERPC_AUTH_LEVEL_PRIVACY) {
- if (!auth_ntlmssp_negotiated_seal(a)) {
- DEBUG(0,("pipe_ntlmssp_verify_final: pipe %s : packet privacy requested "
- "but client declined sealing.\n",
- get_pipe_name_from_syntax(talloc_tos(),
- &p->syntax)));
- return False;
- }
- }
-
- DEBUG(5, ("pipe_ntlmssp_verify_final: OK: user: %s domain: %s "
- "workstation: %s\n",
- auth_ntlmssp_get_username(a),
- auth_ntlmssp_get_domain(a),
- auth_ntlmssp_get_client(a)));
-
- TALLOC_FREE(p->server_info);
-
- status = auth_ntlmssp_steal_server_info(p, a, &p->server_info);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0, ("auth_ntlmssp_server_info failed to obtain the server info for authenticated user: %s\n",
- nt_errstr(status)));
- return false;
- }
-
- if (p->server_info->ptok == NULL) {
- DEBUG(1,("Error: Authmodule failed to provide nt_user_token\n"));
- return False;
- }
-
- /*
- * We're an authenticated bind over smb, so the session key needs to
- * be set to "SystemLibraryDTC". Weird, but this is what Windows
- * does. See the RPC-SAMBA3SESSIONKEY.
- */
-
- session_key = generic_session_key();
- if (session_key.data == NULL) {
- return False;
- }
-
- ret = server_info_set_session_key(p->server_info, session_key);
-
- data_blob_free(&session_key);
-
- return True;
-}
-
-/*******************************************************************
- This is the "stage3" NTLMSSP response after a bind request and reply.
-*******************************************************************/
-
-bool api_pipe_bind_auth3(struct pipes_struct *p, struct ncacn_packet *pkt)
-{
- struct dcerpc_auth auth_info;
- NTSTATUS status;
-
- DEBUG(5, ("api_pipe_bind_auth3: decode request. %d\n", __LINE__));
-
- if (pkt->auth_length == 0) {
- DEBUG(0, ("No auth field sent for bind request!\n"));
- goto err;
- }
-
- /* Ensure there's enough data for an authenticated request. */
- if (pkt->frag_length < RPC_HEADER_LEN
- + DCERPC_AUTH_TRAILER_LENGTH
- + pkt->auth_length) {
- DEBUG(0,("api_pipe_ntlmssp_auth_process: auth_len "
- "%u is too large.\n",
- (unsigned int)pkt->auth_length));
- goto err;
- }
-
- /*
- * Decode the authentication verifier response.
- */
-
- status = dcerpc_pull_dcerpc_auth(pkt,
- &pkt->u.auth3.auth_info,
- &auth_info, p->endian);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0, ("Failed to unmarshall dcerpc_auth.\n"));
- goto err;
- }
-
- /* We must NEVER look at auth_info->auth_pad_len here,
- * as old Samba client code gets it wrong and sends it
- * as zero. JRA.
- */
-
- if (auth_info.auth_type != DCERPC_AUTH_TYPE_NTLMSSP) {
- DEBUG(0,("api_pipe_bind_auth3: incorrect auth type (%u).\n",
- (unsigned int)auth_info.auth_type ));
- return False;
- }
-
- /*
- * The following call actually checks the challenge/response data.
- * for correctness against the given DOMAIN\user name.
- */
-
- if (!pipe_ntlmssp_verify_final(p, &auth_info.credentials)) {
- goto err;
- }
-
- p->pipe_bound = True;
-
- return True;
-
- err:
-
- free_pipe_auth_data(&p->auth);
-
- return False;
-}
static bool pipe_init_outgoing_data(struct pipes_struct *p);
p->out_data.data_sent_length = 0;
p->out_data.current_pdu_sent = 0;
- free_pipe_auth_data(&p->auth);
+ TALLOC_FREE(p->auth.auth_ctx);
p->auth.auth_level = DCERPC_AUTH_LEVEL_NONE;
p->auth.auth_type = DCERPC_AUTH_TYPE_NONE;
- p->auth.spnego_type = PIPE_AUTH_TYPE_SPNEGO_NONE;
p->pipe_bound = False;
return True;
static bool check_bind_req(struct pipes_struct *p,
struct ndr_syntax_id* abstract,
struct ndr_syntax_id* transfer,
- uint32 context_id)
+ uint32_t context_id)
{
struct pipe_rpc_fns *context_fns;
+ bool ok;
DEBUG(3,("check_bind_req for %s\n",
- get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
+ ndr_interface_name(&abstract->uuid,
+ abstract->if_version)));
/* we have to check all now since win2k introduced a new UUID on the lsaprpc pipe */
if (rpc_srv_pipe_exists_by_id(abstract) &&
- ndr_syntax_id_equal(transfer, &ndr_transfer_syntax)) {
- DEBUG(3, ("check_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
- rpc_srv_get_pipe_cli_name(abstract),
- rpc_srv_get_pipe_srv_name(abstract)));
+ ndr_syntax_id_equal(transfer, &ndr_transfer_syntax_ndr)) {
+ DEBUG(3, ("check_bind_req: %s -> %s rpc service\n",
+ rpc_srv_get_pipe_cli_name(abstract),
+ rpc_srv_get_pipe_srv_name(abstract)));
} else {
return false;
}
- context_fns = SMB_MALLOC_P(struct pipe_rpc_fns);
+ ok = init_pipe_handles(p, abstract);
+ if (!ok) {
+ DEBUG(1, ("Failed to init pipe handles!\n"));
+ return false;
+ }
+
+ context_fns = talloc(p, struct pipe_rpc_fns);
if (context_fns == NULL) {
- DEBUG(0,("check_bind_req: malloc() failed!\n"));
- return False;
+ DEBUG(0,("check_bind_req: talloc() failed!\n"));
+ return false;
}
+ context_fns->next = context_fns->prev = NULL;
context_fns->n_cmds = rpc_srv_get_pipe_num_cmds(abstract);
context_fns->cmds = rpc_srv_get_pipe_cmds(abstract);
context_fns->context_id = context_id;
+ context_fns->syntax = *abstract;
/* add to the list of open contexts */
/**
* Is a named pipe known?
- * @param[in] cli_filename The pipe name requested by the client
+ * @param[in] pipename Just the filename
* @result Do we want to serve this?
*/
-bool is_known_pipename(const char *cli_filename, struct ndr_syntax_id *syntax)
+bool is_known_pipename(const char *pipename, struct ndr_syntax_id *syntax)
{
- const char *pipename = cli_filename;
NTSTATUS status;
- if (strnequal(pipename, "\\PIPE\\", 6)) {
- pipename += 5;
- }
-
- if (*pipename == '\\') {
- pipename += 1;
- }
-
if (lp_disable_spoolss() && strequal(pipename, "spoolss")) {
DEBUG(10, ("refusing spoolss access\n"));
return false;
status = smb_probe_module("rpc", pipename);
if (!NT_STATUS_IS_OK(status)) {
- DEBUG(10, ("is_known_pipename: %s unknown\n", cli_filename));
+ DEBUG(10, ("is_known_pipename: %s unknown\n", pipename));
return false;
}
DEBUG(10, ("is_known_pipename: %s loaded dynamically\n", pipename));
}
/*******************************************************************
- Handle a SPNEGO krb5 bind auth.
-*******************************************************************/
-
-static bool pipe_spnego_auth_bind_kerberos(struct pipes_struct *p,
- TALLOC_CTX *mem_ctx,
- struct dcerpc_auth *pauth_info,
- DATA_BLOB *psecblob,
- DATA_BLOB *response)
-{
- return False;
-}
-
-/*******************************************************************
- Handle the first part of a SPNEGO bind auth.
+ Handle an NTLMSSP bind auth.
*******************************************************************/
-static bool pipe_spnego_auth_bind_negotiate(struct pipes_struct *p,
- TALLOC_CTX *mem_ctx,
- struct dcerpc_auth *pauth_info,
- DATA_BLOB *response)
+static bool pipe_auth_generic_bind(struct pipes_struct *p,
+ struct ncacn_packet *pkt,
+ struct dcerpc_auth *auth_info,
+ DATA_BLOB *response)
{
- DATA_BLOB secblob;
- DATA_BLOB chal;
- char *OIDs[ASN1_MAX_OIDS];
- int i;
- NTSTATUS status;
- bool got_kerberos_mechanism = false;
- struct auth_ntlmssp_state *a = NULL;
-
- ZERO_STRUCT(secblob);
- ZERO_STRUCT(chal);
-
- if (pauth_info->credentials.data[0] != ASN1_APPLICATION(0)) {
- goto err;
- }
-
- /* parse out the OIDs and the first sec blob */
- if (!spnego_parse_negTokenInit(talloc_tos(),
- pauth_info->credentials, OIDs, NULL, &secblob)) {
- DEBUG(0,("pipe_spnego_auth_bind_negotiate: Failed to parse the security blob.\n"));
- goto err;
- }
-
- if (strcmp(OID_KERBEROS5, OIDs[0]) == 0 || strcmp(OID_KERBEROS5_OLD, OIDs[0]) == 0) {
- got_kerberos_mechanism = true;
- }
-
- for (i=0;OIDs[i];i++) {
- DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got OID %s\n", OIDs[i]));
- TALLOC_FREE(OIDs[i]);
- }
- DEBUG(3,("pipe_spnego_auth_bind_negotiate: Got secblob of size %lu\n", (unsigned long)secblob.length));
-
- if ( got_kerberos_mechanism && ((lp_security()==SEC_ADS) || USE_KERBEROS_KEYTAB) ) {
- bool ret;
- ret = pipe_spnego_auth_bind_kerberos(p, mem_ctx, pauth_info,
- &secblob, response);
- data_blob_free(&secblob);
- return ret;
- }
-
- /* Free any previous auth type. */
- free_pipe_auth_data(&p->auth);
-
- if (!got_kerberos_mechanism) {
- /* Initialize the NTLM engine. */
- status = auth_ntlmssp_start(&a);
- if (!NT_STATUS_IS_OK(status)) {
- goto err;
- }
-
- /* Clear flags,
- * then set them according to requested Auth Level */
- auth_ntlmssp_and_flags(a, ~(NTLMSSP_NEGOTIATE_SIGN |
- NTLMSSP_NEGOTIATE_SEAL));
- switch (pauth_info->auth_level) {
- case DCERPC_AUTH_LEVEL_INTEGRITY:
- auth_ntlmssp_or_flags(a,
- NTLMSSP_NEGOTIATE_SIGN);
- break;
- case DCERPC_AUTH_LEVEL_PRIVACY:
- /* Privacy always implies both sign and seal
- * for ntlmssp */
- auth_ntlmssp_or_flags(a,
- NTLMSSP_NEGOTIATE_SIGN |
- NTLMSSP_NEGOTIATE_SEAL);
- break;
- default:
- break;
- }
- /*
- * Pass the first security blob of data to it.
- * This can return an error or NT_STATUS_MORE_PROCESSING_REQUIRED
- * which means we need another packet to complete the bind.
- */
-
- status = auth_ntlmssp_update(a, secblob, &chal);
-
- if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- DEBUG(3,("pipe_spnego_auth_bind_negotiate: auth_ntlmssp_update failed.\n"));
- goto err;
- }
+ TALLOC_CTX *mem_ctx = pkt;
+ struct gensec_security *gensec_security = NULL;
+ NTSTATUS status;
- /* Generate the response blob we need for step 2 of the bind. */
- *response = spnego_gen_auth_response(mem_ctx, &chal, status, OID_NTLMSSP);
- } else {
- /*
- * SPNEGO negotiate down to NTLMSSP. The subsequent
- * code to process follow-up packets is not complete
- * yet. JRA.
- */
- *response = spnego_gen_auth_response(mem_ctx, NULL,
- NT_STATUS_MORE_PROCESSING_REQUIRED,
- OID_NTLMSSP);
+ status = auth_generic_server_authtype_start(p,
+ auth_info->auth_type,
+ auth_info->auth_level,
+ &auth_info->credentials,
+ response,
+ p->remote_address,
+ &gensec_security);
+ if (!NT_STATUS_IS_OK(status) &&
+ !NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED))
+ {
+ DEBUG(0, (__location__ ": auth_generic_server_authtype_start[%u/%u] failed: %s\n",
+ auth_info->auth_type, auth_info->auth_level, nt_errstr(status)));
+ return false;
}
- /* auth_pad_len will be handled by the caller */
-
- p->auth.a_u.auth_ntlmssp_state = a;
- p->auth.auth_data_free_func = &free_pipe_ntlmssp_auth_data;
- p->auth.auth_type = DCERPC_AUTH_TYPE_SPNEGO;
- p->auth.spnego_type = PIPE_AUTH_TYPE_SPNEGO_NTLMSSP;
-
- data_blob_free(&secblob);
- data_blob_free(&chal);
-
- /* We can't set pipe_bound True yet - we need an RPC_ALTER_CONTEXT response packet... */
- return True;
-
- err:
-
- data_blob_free(&secblob);
- data_blob_free(&chal);
-
- p->auth.a_u.auth_ntlmssp_state = NULL;
-
- return False;
-}
-
-/*******************************************************************
- Handle the second part of a SPNEGO bind auth.
-*******************************************************************/
-
-static bool pipe_spnego_auth_bind_continue(struct pipes_struct *p,
- TALLOC_CTX *mem_ctx,
- struct dcerpc_auth *pauth_info,
- DATA_BLOB *response)
-{
- DATA_BLOB auth_blob;
- DATA_BLOB auth_reply;
- struct auth_ntlmssp_state *a = p->auth.a_u.auth_ntlmssp_state;
+ /* Make sure data is bound to the memctx, to be freed the caller */
+ talloc_steal(mem_ctx, response->data);
- ZERO_STRUCT(auth_blob);
- ZERO_STRUCT(auth_reply);
+ p->auth.auth_ctx = gensec_security;
+ p->auth.auth_type = auth_info->auth_type;
- /*
- * NB. If we've negotiated down from krb5 to NTLMSSP we'll currently
- * fail here as 'a' == NULL.
- */
- if (p->auth.auth_type != DCERPC_AUTH_TYPE_SPNEGO ||
- p->auth.spnego_type != PIPE_AUTH_TYPE_SPNEGO_NTLMSSP || !a) {
- DEBUG(0,("pipe_spnego_auth_bind_continue: not in NTLMSSP auth state.\n"));
- goto err;
+ if (pkt->pfc_flags & DCERPC_PFC_FLAG_SUPPORT_HEADER_SIGN) {
+ p->auth.client_hdr_signing = true;
+ p->auth.hdr_signing = gensec_have_feature(gensec_security,
+ GENSEC_FEATURE_SIGN_PKT_HEADER);
}
- if (pauth_info->credentials.data[0] != ASN1_CONTEXT(1)) {
- DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob type.\n"));
- goto err;
+ if (p->auth.hdr_signing) {
+ gensec_want_feature(gensec_security,
+ GENSEC_FEATURE_SIGN_PKT_HEADER);
}
- if (!spnego_parse_auth(talloc_tos(), pauth_info->credentials, &auth_blob)) {
- DEBUG(0,("pipe_spnego_auth_bind_continue: invalid SPNEGO blob.\n"));
- goto err;
+ if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ return true;
}
- /*
- * The following call actually checks the challenge/response data.
- * for correctness against the given DOMAIN\user name.
- */
-
- if (!pipe_ntlmssp_verify_final(p, &auth_blob)) {
- goto err;
+ status = pipe_auth_verify_final(p);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("pipe_auth_verify_final failed: %s\n",
+ nt_errstr(status)));
+ return false;
}
- data_blob_free(&auth_blob);
-
- /* Generate the spnego "accept completed" blob - no incoming data. */
- *response = spnego_gen_auth_response(mem_ctx, &auth_reply, NT_STATUS_OK, OID_NTLMSSP);
-
- data_blob_free(&auth_reply);
-
- p->pipe_bound = True;
-
- return True;
-
- err:
-
- data_blob_free(&auth_blob);
- data_blob_free(&auth_reply);
-
- free_pipe_auth_data(&p->auth);
-
- return False;
+ return true;
}
/*******************************************************************
- Handle an schannel bind auth.
+ Process an NTLMSSP authentication response.
+ If this function succeeds, the user has been authenticated
+ and their domain, name and calling workstation stored in
+ the pipe struct.
*******************************************************************/
-static bool pipe_schannel_auth_bind(struct pipes_struct *p,
- TALLOC_CTX *mem_ctx,
- struct dcerpc_auth *auth_info,
- DATA_BLOB *response)
-{
- struct NL_AUTH_MESSAGE neg;
- struct NL_AUTH_MESSAGE reply;
- bool ret;
- NTSTATUS status;
- struct netlogon_creds_CredentialState *creds;
- DATA_BLOB session_key;
- enum ndr_err_code ndr_err;
-
- ndr_err = ndr_pull_struct_blob(
- &auth_info->credentials, mem_ctx, &neg,
- (ndr_pull_flags_fn_t)ndr_pull_NL_AUTH_MESSAGE);
- if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
- DEBUG(0,("pipe_schannel_auth_bind: Could not unmarshal SCHANNEL auth neg\n"));
- return false;
- }
-
- if (DEBUGLEVEL >= 10) {
- NDR_PRINT_DEBUG(NL_AUTH_MESSAGE, &neg);
- }
-
- if (!(neg.Flags & NL_FLAG_OEM_NETBIOS_COMPUTER_NAME)) {
- DEBUG(0,("pipe_schannel_auth_bind: Did not receive netbios computer name\n"));
- return false;
- }
-
- /*
- * The neg.oem_netbios_computer.a key here must match the remote computer name
- * given in the DOM_CLNT_SRV.uni_comp_name used on all netlogon pipe
- * operations that use credentials.
- */
-
- become_root();
- status = schannel_get_creds_state(p, lp_private_dir(),
- neg.oem_netbios_computer.a, &creds);
- unbecome_root();
-
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0, ("pipe_schannel_auth_bind: Attempt to bind using schannel without successful serverauth2\n"));
- return False;
- }
-
- p->auth.a_u.schannel_auth = talloc(p, struct schannel_state);
- if (!p->auth.a_u.schannel_auth) {
- TALLOC_FREE(creds);
- return False;
- }
+static bool pipe_auth_generic_verify_final(TALLOC_CTX *mem_ctx,
+ struct gensec_security *gensec_security,
+ enum dcerpc_AuthLevel auth_level,
+ struct auth_session_info **session_info)
+{
+ NTSTATUS status;
+ bool ret;
- p->auth.a_u.schannel_auth->state = SCHANNEL_STATE_START;
- p->auth.a_u.schannel_auth->seq_num = 0;
- p->auth.a_u.schannel_auth->initiator = false;
- p->auth.a_u.schannel_auth->creds = creds;
+ DEBUG(5, (__location__ ": checking user details\n"));
- /*
- * JRA. Should we also copy the schannel session key into the pipe session key p->session_key
- * here ? We do that for NTLMSSP, but the session key is already set up from the vuser
- * struct of the person who opened the pipe. I need to test this further. JRA.
- *
- * VL. As we are mapping this to guest set the generic key
- * "SystemLibraryDTC" key here. It's a bit difficult to test against
- * W2k3, as it does not allow schannel binds against SAMR and LSA
- * anymore.
- */
+ /* Finally - if the pipe negotiated integrity (sign) or privacy (seal)
+ ensure the underlying NTLMSSP flags are also set. If not we should
+ refuse the bind. */
- session_key = generic_session_key();
- if (session_key.data == NULL) {
- DEBUG(0, ("pipe_schannel_auth_bind: Could not alloc session"
- " key\n"));
+ status = auth_generic_server_check_flags(gensec_security,
+ (auth_level ==
+ DCERPC_AUTH_LEVEL_INTEGRITY),
+ (auth_level ==
+ DCERPC_AUTH_LEVEL_PRIVACY));
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, (__location__ ": Client failed to negotatie proper "
+ "security for rpc connection\n"));
return false;
}
- ret = server_info_set_session_key(p->server_info, session_key);
-
- data_blob_free(&session_key);
+ TALLOC_FREE(*session_info);
- if (!ret) {
- DEBUG(0, ("server_info_set_session_key failed\n"));
+ status = auth_generic_server_get_user_info(gensec_security,
+ mem_ctx, session_info);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, (__location__ ": failed to obtain the server info "
+ "for authenticated user: %s\n", nt_errstr(status)));
return false;
}
- /*** SCHANNEL verifier ***/
-
- reply.MessageType = NL_NEGOTIATE_RESPONSE;
- reply.Flags = 0;
- reply.Buffer.dummy = 5; /* ??? actually I don't think
- * this has any meaning
- * here - gd */
-
- ndr_err = ndr_push_struct_blob(response, mem_ctx, &reply,
- (ndr_push_flags_fn_t)ndr_push_NL_AUTH_MESSAGE);
- if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
- DEBUG(0,("Failed to marshall NL_AUTH_MESSAGE.\n"));
+ if ((*session_info)->security_token == NULL) {
+ DEBUG(1, ("Auth module failed to provide nt_user_token\n"));
return false;
}
- if (DEBUGLEVEL >= 10) {
- NDR_PRINT_DEBUG(NL_AUTH_MESSAGE, &reply);
+ if ((*session_info)->unix_token == NULL) {
+ DEBUG(1, ("Auth module failed to provide unix_token\n"));
+ return false;
}
- DEBUG(10,("pipe_schannel_auth_bind: schannel auth: domain [%s] myname [%s]\n",
- neg.oem_netbios_domain.a, neg.oem_netbios_computer.a));
-
- /* We're finished with this bind - no more packets. */
- p->auth.auth_data_free_func = &free_pipe_schannel_auth_data;
- p->auth.auth_type = DCERPC_AUTH_TYPE_SCHANNEL;
+ /*
+ * We're an authenticated bind over smb, so the session key needs to
+ * be set to "SystemLibraryDTC". Weird, but this is what Windows
+ * does. See the RPC-SAMBA3SESSIONKEY.
+ */
- p->pipe_bound = True;
+ ret = session_info_set_session_key((*session_info), generic_session_key());
+ if (!ret) {
+ DEBUG(0, ("Failed to set session key!\n"));
+ return false;
+ }
- return True;
+ return true;
}
-/*******************************************************************
- Handle an NTLMSSP bind auth.
-*******************************************************************/
-
-static bool pipe_ntlmssp_auth_bind(struct pipes_struct *p,
- TALLOC_CTX *mem_ctx,
- struct dcerpc_auth *auth_info,
- DATA_BLOB *response)
+static NTSTATUS pipe_auth_verify_final(struct pipes_struct *p)
{
- NTSTATUS status;
- struct auth_ntlmssp_state *a = NULL;
+ struct gensec_security *gensec_security;
+ bool ok;
- if (strncmp((char *)auth_info->credentials.data, "NTLMSSP", 7) != 0) {
- DEBUG(0, ("Failed to read NTLMSSP in blob\n"));
- goto err;
- }
-
- /* We have an NTLMSSP blob. */
- status = auth_ntlmssp_start(&a);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_start failed: %s\n",
- nt_errstr(status) ));
- goto err;
+ if (p->auth.auth_type == DCERPC_AUTH_TYPE_NONE) {
+ p->pipe_bound = true;
+ return NT_STATUS_OK;
}
- /* Clear flags, then set them according to requested Auth Level */
- auth_ntlmssp_and_flags(a, ~(NTLMSSP_NEGOTIATE_SIGN |
- NTLMSSP_NEGOTIATE_SEAL));
-
- switch (auth_info->auth_level) {
- case DCERPC_AUTH_LEVEL_INTEGRITY:
- auth_ntlmssp_or_flags(a, NTLMSSP_NEGOTIATE_SIGN);
- break;
- case DCERPC_AUTH_LEVEL_PRIVACY:
- /* Privacy always implies both sign and seal for ntlmssp */
- auth_ntlmssp_or_flags(a, NTLMSSP_NEGOTIATE_SIGN |
- NTLMSSP_NEGOTIATE_SEAL);
- break;
- default:
- break;
+ gensec_security = talloc_get_type(p->auth.auth_ctx,
+ struct gensec_security);
+ if (gensec_security == NULL) {
+ return NT_STATUS_INTERNAL_ERROR;
}
- status = auth_ntlmssp_update(a, auth_info->credentials, response);
- if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
- DEBUG(0,("pipe_ntlmssp_auth_bind: auth_ntlmssp_update failed: %s\n",
- nt_errstr(status) ));
- goto err;
+ ok = pipe_auth_generic_verify_final(p, gensec_security,
+ p->auth.auth_level,
+ &p->session_info);
+ if (!ok) {
+ return NT_STATUS_ACCESS_DENIED;
}
- /* Make sure data is bound to the memctx, to be freed the caller */
- talloc_steal(mem_ctx, response->data);
-
- p->auth.a_u.auth_ntlmssp_state = a;
- p->auth.auth_data_free_func = &free_pipe_ntlmssp_auth_data;
- p->auth.auth_type = DCERPC_AUTH_TYPE_NTLMSSP;
-
- DEBUG(10,("pipe_ntlmssp_auth_bind: NTLMSSP auth started\n"));
-
- /* We can't set pipe_bound True yet - we need an DCERPC_PKT_AUTH3 response packet... */
- return True;
-
- err:
+ p->pipe_bound = true;
- TALLOC_FREE(a);
- return False;
+ return NT_STATUS_OK;
}
/*******************************************************************
Respond to a pipe bind request.
*******************************************************************/
-bool api_pipe_bind_req(struct pipes_struct *p, struct ncacn_packet *pkt)
+static bool api_pipe_bind_req(struct pipes_struct *p,
+ struct ncacn_packet *pkt)
{
struct dcerpc_auth auth_info;
uint16 assoc_gid;
unsigned int auth_type = DCERPC_AUTH_TYPE_NONE;
NTSTATUS status;
struct ndr_syntax_id id;
+ uint8_t pfc_flags = 0;
union dcerpc_payload u;
struct dcerpc_ack_ctx bind_ack_ctx;
DATA_BLOB auth_resp = data_blob_null;
DATA_BLOB auth_blob = data_blob_null;
+ const struct ndr_interface_table *table;
/* No rebinds on a bound pipe - use alter context. */
if (p->pipe_bound) {
- DEBUG(2,("api_pipe_bind_req: rejecting bind request on bound "
- "pipe %s.\n",
- get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
+ DEBUG(2,("Rejecting bind request on bound rpc connection\n"));
return setup_bind_nak(p, pkt);
}
* that this is a pipe name we support.
*/
id = pkt->u.bind.ctx_list[0].abstract_syntax;
+
+ table = ndr_table_by_uuid(&id.uuid);
+ if (table == NULL) {
+ DEBUG(0,("unknown interface\n"));
+ return false;
+ }
+
if (rpc_srv_pipe_exists_by_id(&id)) {
- DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
- rpc_srv_get_pipe_cli_name(&id),
- rpc_srv_get_pipe_srv_name(&id)));
+ DEBUG(3, ("api_pipe_bind_req: %s -> %s rpc service\n",
+ rpc_srv_get_pipe_cli_name(&id),
+ rpc_srv_get_pipe_srv_name(&id)));
} else {
status = smb_probe_module(
- "rpc", get_pipe_name_from_syntax(
- talloc_tos(),
- &pkt->u.bind.ctx_list[0].abstract_syntax));
+ "rpc", dcerpc_default_transport_endpoint(pkt,
+ NCACN_NP, table));
if (NT_STATUS_IS_ERR(status)) {
- DEBUG(3,("api_pipe_bind_req: Unknown pipe name %s in bind request.\n",
- get_pipe_name_from_syntax(
- talloc_tos(),
- &pkt->u.bind.ctx_list[0].abstract_syntax)));
+ DEBUG(3,("api_pipe_bind_req: Unknown rpc service name "
+ "%s in bind request.\n",
+ ndr_interface_name(&id.uuid,
+ id.if_version)));
return setup_bind_nak(p, pkt);
}
if (rpc_srv_get_pipe_interface_by_cli_name(
- get_pipe_name_from_syntax(talloc_tos(),
- &p->syntax),
+ dcerpc_default_transport_endpoint(pkt,
+ NCACN_NP, table),
&id)) {
- DEBUG(3, ("api_pipe_bind_req: \\PIPE\\%s -> \\PIPE\\%s\n",
- rpc_srv_get_pipe_cli_name(&id),
- rpc_srv_get_pipe_srv_name(&id)));
+ DEBUG(3, ("api_pipe_bind_req: %s -> %s rpc service\n",
+ rpc_srv_get_pipe_cli_name(&id),
+ rpc_srv_get_pipe_srv_name(&id)));
} else {
DEBUG(0, ("module %s doesn't provide functions for "
"pipe %s!\n",
- get_pipe_name_from_syntax(talloc_tos(),
- &p->syntax),
- get_pipe_name_from_syntax(talloc_tos(),
- &p->syntax)));
+ ndr_interface_name(&id.uuid,
+ id.if_version),
+ ndr_interface_name(&id.uuid,
+ id.if_version)));
return setup_bind_nak(p, pkt);
}
}
pkt->u.bind.ctx_list[0].context_id)) {
bind_ack_ctx.result = 0;
- bind_ack_ctx.reason = 0;
+ bind_ack_ctx.reason.value = 0;
bind_ack_ctx.syntax = pkt->u.bind.ctx_list[0].transfer_syntaxes[0];
} else {
p->pipe_bound = False;
/* Rejection reason: abstract syntax not supported */
bind_ack_ctx.result = DCERPC_BIND_PROVIDER_REJECT;
- bind_ack_ctx.reason = DCERPC_BIND_REASON_ASYNTAX;
- bind_ack_ctx.syntax = null_ndr_syntax_id;
+ bind_ack_ctx.reason.value = DCERPC_BIND_REASON_ASYNTAX;
+ bind_ack_ctx.syntax = ndr_syntax_id_null;
}
/*
case DCERPC_AUTH_LEVEL_PRIVACY:
p->auth.auth_level = DCERPC_AUTH_LEVEL_PRIVACY;
break;
+ case DCERPC_AUTH_LEVEL_CONNECT:
+ p->auth.auth_level = DCERPC_AUTH_LEVEL_CONNECT;
+ break;
default:
DEBUG(0, ("Unexpected auth level (%u).\n",
(unsigned int)auth_info.auth_level ));
}
switch (auth_type) {
- case DCERPC_AUTH_TYPE_NTLMSSP:
- if (!pipe_ntlmssp_auth_bind(p, pkt,
- &auth_info, &auth_resp)) {
- goto err_exit;
- }
- assoc_gid = 0x7a77;
+ case DCERPC_AUTH_TYPE_NONE:
break;
- case DCERPC_AUTH_TYPE_SCHANNEL:
- if (!pipe_schannel_auth_bind(p, pkt,
- &auth_info, &auth_resp)) {
+ case DCERPC_AUTH_TYPE_NCALRPC_AS_SYSTEM:
+ if (p->transport == NCALRPC && p->ncalrpc_as_system) {
+ TALLOC_FREE(p->session_info);
+
+ status = make_session_info_system(p,
+ &p->session_info);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto err_exit;
+ }
+
+ auth_resp = data_blob_talloc(pkt,
+ "NCALRPC_AUTH_OK",
+ 15);
+
+ p->auth.auth_type = DCERPC_AUTH_TYPE_NCALRPC_AS_SYSTEM;
+ p->pipe_bound = true;
+ } else {
goto err_exit;
}
break;
- case DCERPC_AUTH_TYPE_SPNEGO:
- if (!pipe_spnego_auth_bind_negotiate(p, pkt,
- &auth_info, &auth_resp)) {
+ default:
+ if (!pipe_auth_generic_bind(p, pkt,
+ &auth_info, &auth_resp)) {
goto err_exit;
}
break;
-
- case DCERPC_AUTH_TYPE_NONE:
- break;
-
- default:
- DEBUG(0, ("Unknown auth type %x requested.\n", auth_type));
- goto err_exit;
}
}
/* Unauthenticated bind request. */
/* We're finished - no more packets. */
p->auth.auth_type = DCERPC_AUTH_TYPE_NONE;
- p->auth.spnego_type = PIPE_AUTH_TYPE_SPNEGO_NONE;
/* We must set the pipe auth_level here also. */
p->auth.auth_level = DCERPC_AUTH_LEVEL_NONE;
p->pipe_bound = True;
* header and are never sending more than one PDU here.
*/
+ pfc_flags = DCERPC_PFC_FLAG_FIRST | DCERPC_PFC_FLAG_LAST;
+
+ if (p->auth.hdr_signing) {
+ pfc_flags |= DCERPC_PFC_FLAG_SUPPORT_HEADER_SIGN;
+ }
+
status = dcerpc_push_ncacn_packet(p->mem_ctx,
DCERPC_PKT_BIND_ACK,
- DCERPC_PFC_FLAG_FIRST |
- DCERPC_PFC_FLAG_LAST,
+ pfc_flags,
auth_resp.length,
pkt->call_id,
&u,
return setup_bind_nak(p, pkt);
}
+/*******************************************************************
+ This is the "stage3" response after a bind request and reply.
+*******************************************************************/
+
+bool api_pipe_bind_auth3(struct pipes_struct *p, struct ncacn_packet *pkt)
+{
+ struct dcerpc_auth auth_info;
+ DATA_BLOB response = data_blob_null;
+ struct gensec_security *gensec_security;
+ NTSTATUS status;
+
+ DEBUG(5, ("api_pipe_bind_auth3: decode request. %d\n", __LINE__));
+
+ if (pkt->auth_length == 0) {
+ DEBUG(1, ("No auth field sent for bind request!\n"));
+ goto err;
+ }
+
+ /* Ensure there's enough data for an authenticated request. */
+ if (pkt->frag_length < RPC_HEADER_LEN
+ + DCERPC_AUTH_TRAILER_LENGTH
+ + pkt->auth_length) {
+ DEBUG(1,("api_pipe_ntlmssp_auth_process: auth_len "
+ "%u is too large.\n",
+ (unsigned int)pkt->auth_length));
+ goto err;
+ }
+
+ /*
+ * Decode the authentication verifier response.
+ */
+
+ status = dcerpc_pull_dcerpc_auth(pkt,
+ &pkt->u.auth3.auth_info,
+ &auth_info, p->endian);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("Failed to unmarshall dcerpc_auth.\n"));
+ goto err;
+ }
+
+ /* We must NEVER look at auth_info->auth_pad_len here,
+ * as old Samba client code gets it wrong and sends it
+ * as zero. JRA.
+ */
+
+ if (auth_info.auth_type != p->auth.auth_type) {
+ DEBUG(1, ("Auth type mismatch! Client sent %d, "
+ "but auth was started as type %d!\n",
+ auth_info.auth_type, p->auth.auth_type));
+ goto err;
+ }
+
+ gensec_security = talloc_get_type(p->auth.auth_ctx,
+ struct gensec_security);
+
+ status = auth_generic_server_step(gensec_security,
+ pkt, &auth_info.credentials,
+ &response);
+
+ if (NT_STATUS_EQUAL(status,
+ NT_STATUS_MORE_PROCESSING_REQUIRED) ||
+ response.length) {
+ DEBUG(1, (__location__ ": This was supposed to be the final "
+ "leg, but crypto machinery claims a response is "
+ "needed, aborting auth!\n"));
+ data_blob_free(&response);
+ goto err;
+ }
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(2, ("Auth failed (%s)\n", nt_errstr(status)));
+ goto err;
+ }
+
+ /* Now verify auth was indeed successful and extract server info */
+ status = pipe_auth_verify_final(p);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(2, ("Auth Verify failed (%s)\n", nt_errstr(status)));
+ goto err;
+ }
+
+ return true;
+
+err:
+
+ TALLOC_FREE(p->auth.auth_ctx);
+ return false;
+}
+
/****************************************************************************
Deal with an alter context call. Can be third part of 3 leg auth request for
SPNEGO calls.
****************************************************************************/
-bool api_pipe_alter_context(struct pipes_struct *p, struct ncacn_packet *pkt)
+static bool api_pipe_alter_context(struct pipes_struct *p,
+ struct ncacn_packet *pkt)
{
struct dcerpc_auth auth_info;
uint16 assoc_gid;
DATA_BLOB auth_resp = data_blob_null;
DATA_BLOB auth_blob = data_blob_null;
int pad_len = 0;
+ struct gensec_security *gensec_security;
DEBUG(5,("api_pipe_alter_context: make response. %d\n", __LINE__));
pkt->u.bind.ctx_list[0].context_id)) {
bind_ack_ctx.result = 0;
- bind_ack_ctx.reason = 0;
+ bind_ack_ctx.reason.value = 0;
bind_ack_ctx.syntax = pkt->u.bind.ctx_list[0].transfer_syntaxes[0];
} else {
p->pipe_bound = False;
/* Rejection reason: abstract syntax not supported */
bind_ack_ctx.result = DCERPC_BIND_PROVIDER_REJECT;
- bind_ack_ctx.reason = DCERPC_BIND_REASON_ASYNTAX;
- bind_ack_ctx.syntax = null_ndr_syntax_id;
+ bind_ack_ctx.reason.value = DCERPC_BIND_REASON_ASYNTAX;
+ bind_ack_ctx.syntax = ndr_syntax_id_null;
}
/*
goto err_exit;
}
+ /* We can only finish if the pipe is unbound for now */
+ if (p->pipe_bound) {
+ DEBUG(0, (__location__ ": Pipe already bound, "
+ "Altering Context not yet supported!\n"));
+ goto err_exit;
+ }
- /*
- * Currently only the SPNEGO auth type uses the alter ctx
- * response in place of the NTLMSSP auth3 type.
- */
-
- if (auth_info.auth_type == DCERPC_AUTH_TYPE_SPNEGO) {
- /* We can only finish if the pipe is unbound. */
- if (!p->pipe_bound) {
- if (!pipe_spnego_auth_bind_continue(p, pkt,
- &auth_info, &auth_resp)) {
- goto err_exit;
- }
+ if (auth_info.auth_type != p->auth.auth_type) {
+ DEBUG(0, ("Auth type mismatch! Client sent %d, "
+ "but auth was started as type %d!\n",
+ auth_info.auth_type, p->auth.auth_type));
+ goto err_exit;
+ }
- } else {
+ gensec_security = talloc_get_type(p->auth.auth_ctx,
+ struct gensec_security);
+ status = auth_generic_server_step(gensec_security,
+ pkt,
+ &auth_info.credentials,
+ &auth_resp);
+ if (NT_STATUS_IS_OK(status)) {
+ /* third leg of auth, verify auth info */
+ status = pipe_auth_verify_final(p);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("Auth Verify failed (%s)\n",
+ nt_errstr(status)));
goto err_exit;
}
+ } else if (NT_STATUS_EQUAL(status,
+ NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ DEBUG(10, ("More auth legs required.\n"));
+ } else {
+ DEBUG(0, ("Auth step returned an error (%s)\n",
+ nt_errstr(status)));
+ goto err_exit;
}
}
return setup_bind_nak(p, pkt);
}
-/****************************************************************************
- Find the set of RPC functions associated with this context_id
-****************************************************************************/
+static bool api_rpcTNP(struct pipes_struct *p, struct ncacn_packet *pkt,
+ const struct api_struct *api_rpc_cmds, int n_cmds,
+ const struct ndr_syntax_id *syntax);
-static PIPE_RPC_FNS* find_pipe_fns_by_context( PIPE_RPC_FNS *list, uint32 context_id )
+static bool srv_pipe_check_verification_trailer(struct pipes_struct *p,
+ struct ncacn_packet *pkt,
+ struct pipe_rpc_fns *pipe_fns)
{
- PIPE_RPC_FNS *fns = NULL;
-
- if ( !list ) {
- DEBUG(0,("find_pipe_fns_by_context: ERROR! No context list for pipe!\n"));
- return NULL;
- }
+ TALLOC_CTX *frame = talloc_stackframe();
+ struct dcerpc_sec_verification_trailer *vt = NULL;
+ const uint32_t bitmask1 =
+ p->auth.client_hdr_signing ? DCERPC_SEC_VT_CLIENT_SUPPORTS_HEADER_SIGNING : 0;
+ const struct dcerpc_sec_vt_pcontext pcontext = {
+ .abstract_syntax = pipe_fns->syntax,
+ .transfer_syntax = ndr_transfer_syntax_ndr,
+ };
+ const struct dcerpc_sec_vt_header2 header2 =
+ dcerpc_sec_vt_header2_from_ncacn_packet(pkt);
+ struct ndr_pull *ndr;
+ enum ndr_err_code ndr_err;
+ bool ret = false;
- for (fns=list; fns; fns=fns->next ) {
- if ( fns->context_id == context_id )
- return fns;
+ ndr = ndr_pull_init_blob(&p->in_data.data, frame);
+ if (ndr == NULL) {
+ goto done;
}
- return NULL;
-}
-
-/****************************************************************************
- Memory cleanup.
-****************************************************************************/
-void free_pipe_rpc_context( PIPE_RPC_FNS *list )
-{
- PIPE_RPC_FNS *tmp = list;
- PIPE_RPC_FNS *tmp2;
-
- while (tmp) {
- tmp2 = tmp->next;
- SAFE_FREE(tmp);
- tmp = tmp2;
+ ndr_err = ndr_pop_dcerpc_sec_verification_trailer(ndr, frame, &vt);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ goto done;
}
- return;
+ ret = dcerpc_sec_verification_trailer_check(vt, &bitmask1,
+ &pcontext, &header2);
+done:
+ TALLOC_FREE(frame);
+ return ret;
}
-static bool api_rpcTNP(struct pipes_struct *p, struct ncacn_packet *pkt,
- const struct api_struct *api_rpc_cmds, int n_cmds);
-
/****************************************************************************
Find the correct RPC function to call for this request.
If the pipe is authenticated then become the correct UNIX user
before doing the call.
****************************************************************************/
-bool api_pipe_request(struct pipes_struct *p, struct ncacn_packet *pkt)
+static bool api_pipe_request(struct pipes_struct *p,
+ struct ncacn_packet *pkt)
{
+ TALLOC_CTX *frame = talloc_stackframe();
bool ret = False;
- bool changed_user = False;
- PIPE_RPC_FNS *pipe_fns;
-
- if (p->pipe_bound &&
- ((p->auth.auth_type == DCERPC_AUTH_TYPE_NTLMSSP) ||
- ((p->auth.auth_type == DCERPC_AUTH_TYPE_SPNEGO) &&
- (p->auth.spnego_type == PIPE_AUTH_TYPE_SPNEGO_NTLMSSP)))) {
- if(!become_authenticated_pipe_user(p)) {
- data_blob_free(&p->out_data.rdata);
- return False;
- }
- changed_user = True;
- }
+ struct pipe_rpc_fns *pipe_fns;
- DEBUG(5, ("Requested \\PIPE\\%s\n",
- get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
+ if (!p->pipe_bound) {
+ DEBUG(1, ("Pipe not bound!\n"));
+ data_blob_free(&p->out_data.rdata);
+ TALLOC_FREE(frame);
+ return false;
+ }
/* get the set of RPC functions for this context */
-
pipe_fns = find_pipe_fns_by_context(p->contexts,
pkt->u.request.context_id);
-
- if ( pipe_fns ) {
- TALLOC_CTX *frame = talloc_stackframe();
- ret = api_rpcTNP(p, pkt, pipe_fns->cmds, pipe_fns->n_cmds);
+ if (pipe_fns == NULL) {
+ DEBUG(0, ("No rpc function table associated with context "
+ "[%d]\n",
+ pkt->u.request.context_id));
+ data_blob_free(&p->out_data.rdata);
TALLOC_FREE(frame);
+ return false;
}
- else {
- DEBUG(0, ("No rpc function table associated with context "
- "[%d] on pipe [%s]\n",
- pkt->u.request.context_id,
- get_pipe_name_from_syntax(talloc_tos(),
- &p->syntax)));
+
+ if (!srv_pipe_check_verification_trailer(p, pkt, pipe_fns)) {
+ DEBUG(1, ("srv_pipe_check_verification_trailer: failed\n"));
+ setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_ACCESS_DENIED));
+ data_blob_free(&p->out_data.rdata);
+ TALLOC_FREE(frame);
+ return true;
}
- if (changed_user) {
- unbecome_authenticated_pipe_user();
+ if (!become_authenticated_pipe_user(p->session_info)) {
+ DEBUG(1, ("Failed to become pipe user!\n"));
+ data_blob_free(&p->out_data.rdata);
+ TALLOC_FREE(frame);
+ return false;
}
+ DEBUG(5, ("Requested %s rpc service\n",
+ ndr_interface_name(&pipe_fns->syntax.uuid,
+ pipe_fns->syntax.if_version)));
+
+ ret = api_rpcTNP(p, pkt, pipe_fns->cmds, pipe_fns->n_cmds,
+ &pipe_fns->syntax);
+ unbecome_authenticated_pipe_user();
+
+ TALLOC_FREE(frame);
return ret;
}
********************************************************************/
static bool api_rpcTNP(struct pipes_struct *p, struct ncacn_packet *pkt,
- const struct api_struct *api_rpc_cmds, int n_cmds)
+ const struct api_struct *api_rpc_cmds, int n_cmds,
+ const struct ndr_syntax_id *syntax)
{
int fn_num;
uint32_t offset1;
+ const struct ndr_interface_table *table;
/* interpret the command */
DEBUG(4,("api_rpcTNP: %s op 0x%x - ",
- get_pipe_name_from_syntax(talloc_tos(), &p->syntax),
+ ndr_interface_name(&syntax->uuid, syntax->if_version),
pkt->u.request.opnum));
+ table = ndr_table_by_uuid(&syntax->uuid);
+ if (table == NULL) {
+ DEBUG(0,("unknown interface\n"));
+ return false;
+ }
+
if (DEBUGLEVEL >= 50) {
fstring name;
slprintf(name, sizeof(name)-1, "in_%s",
- get_pipe_name_from_syntax(talloc_tos(), &p->syntax));
+ dcerpc_default_transport_endpoint(pkt, NCACN_NP, table));
dump_pdu_region(name, pkt->u.request.opnum,
&p->in_data.data, 0,
p->in_data.data.length);
/* do the actual command */
if(!api_rpc_cmds[fn_num].fn(p)) {
DEBUG(0,("api_rpcTNP: %s: %s failed.\n",
- get_pipe_name_from_syntax(talloc_tos(), &p->syntax),
+ ndr_interface_name(&syntax->uuid, syntax->if_version),
api_rpc_cmds[fn_num].name));
data_blob_free(&p->out_data.rdata);
return False;
}
- if (p->bad_handle_fault_state) {
- DEBUG(4,("api_rpcTNP: bad handle fault return.\n"));
- p->bad_handle_fault_state = False;
- setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_CONTEXT_MISMATCH));
- return True;
- }
-
- if (p->rng_fault_state) {
- DEBUG(4, ("api_rpcTNP: rng fault return\n"));
- p->rng_fault_state = False;
- setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
- return True;
+ if (p->fault_state) {
+ DEBUG(4,("api_rpcTNP: fault(%d) return.\n", p->fault_state));
+ setup_fault_pdu(p, NT_STATUS(p->fault_state));
+ p->fault_state = 0;
+ return true;
}
if (DEBUGLEVEL >= 50) {
fstring name;
slprintf(name, sizeof(name)-1, "out_%s",
- get_pipe_name_from_syntax(talloc_tos(), &p->syntax));
+ dcerpc_default_transport_endpoint(pkt, NCACN_NP, table));
dump_pdu_region(name, pkt->u.request.opnum,
&p->out_data.rdata, offset1,
p->out_data.rdata.length);
}
DEBUG(5,("api_rpcTNP: called %s successfully\n",
- get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
+ ndr_interface_name(&syntax->uuid, syntax->if_version)));
/* Check for buffer underflow in rpc parsing */
if ((DEBUGLEVEL >= 10) &&
data_blob_free(&p->in_data.data);
p->in_data.pdu_needed_len = 0;
p->in_data.pdu.length = 0;
- p->fault_state = True;
- DEBUG(10, ("set_incoming_fault: Setting fault state on pipe %s\n",
- get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
+ p->fault_state = DCERPC_FAULT_CANT_PERFORM;
+
+ DEBUG(10, ("Setting fault state\n"));
}
static NTSTATUS dcesrv_auth_request(struct pipe_auth_data *auth,
{
NTSTATUS status;
DATA_BLOB data;
+ struct dcerpc_sec_vt_header2 hdr2;
if (!p->pipe_bound) {
DEBUG(0,("process_request_pdu: rpc request with no bind.\n"));
return False;
}
+ hdr2 = dcerpc_sec_vt_header2_from_ncacn_packet(pkt);
+ if (pkt->pfc_flags & DCERPC_PFC_FLAG_FIRST) {
+ p->header2 = hdr2;
+ } else {
+ if (!dcerpc_sec_vt_header2_equal(&hdr2, &p->header2)) {
+ set_incoming_fault(p);
+ return false;
+ }
+ }
+
/* Store the opnum */
p->opnum = pkt->u.request.opnum;
}
}
- if (pkt->pfc_flags & DCERPC_PFC_FLAG_LAST) {
- bool ret = False;
- /*
- * Ok - we finally have a complete RPC stream.
- * Call the rpc command to process it.
- */
-
- /*
- * Process the complete data stream here.
- */
- if (pipe_init_outgoing_data(p)) {
- ret = api_pipe_request(p, pkt);
- }
-
- return ret;
+ if (!(pkt->pfc_flags & DCERPC_PFC_FLAG_LAST)) {
+ return true;
}
- return True;
-}
+ /*
+ * Ok - we finally have a complete RPC stream.
+ * Call the rpc command to process it.
+ */
-/****************************************************************************
- Processes a finished PDU stored in p->in_data.pdu.
-****************************************************************************/
+ return api_pipe_request(p, pkt);
+}
-void process_complete_pdu(struct pipes_struct *p)
+void process_complete_pdu(struct pipes_struct *p, struct ncacn_packet *pkt)
{
- struct ncacn_packet *pkt = NULL;
- NTSTATUS status;
- bool reply = False;
-
- if(p->fault_state) {
- DEBUG(10,("process_complete_pdu: pipe %s in fault state.\n",
- get_pipe_name_from_syntax(talloc_tos(), &p->syntax)));
- goto done;
- }
+ bool reply = false;
- pkt = talloc(p->mem_ctx, struct ncacn_packet);
- if (!pkt) {
- DEBUG(0, ("Out of memory!\n"));
- goto done;
- }
+ /* Store the call_id */
+ p->call_id = pkt->call_id;
- /*
- * Ensure we're using the corrent endianness for both the
- * RPC header flags and the raw data we will be reading from.
- */
- if (dcerpc_get_endian_flag(&p->in_data.pdu) & DCERPC_DREP_LE) {
- p->endian = RPC_LITTLE_ENDIAN;
- } else {
- p->endian = RPC_BIG_ENDIAN;
- }
- DEBUG(10, ("PDU is in %s Endian format!\n", p->endian?"Big":"Little"));
+ DEBUG(10, ("Processing packet type %u\n", (unsigned int)pkt->ptype));
- status = dcerpc_pull_ncacn_packet(pkt, &p->in_data.pdu,
- pkt, p->endian);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0, ("Failed to unmarshal rpc packet: %s!\n",
- nt_errstr(status)));
+ if (!pipe_init_outgoing_data(p)) {
goto done;
}
- /* Store the call_id */
- p->call_id = pkt->call_id;
-
- DEBUG(10, ("Processing packet type %d\n", (int)pkt->ptype));
-
switch (pkt->ptype) {
case DCERPC_PKT_REQUEST:
reply = process_request_pdu(p, pkt);
break;
case DCERPC_PKT_PING: /* CL request - ignore... */
- DEBUG(0, ("process_complete_pdu: Error. "
- "Connectionless packet type %d received on "
- "pipe %s.\n", (int)pkt->ptype,
- get_pipe_name_from_syntax(talloc_tos(),
- &p->syntax)));
+ DEBUG(0, ("Error - Connectionless packet type %u received\n",
+ (unsigned int)pkt->ptype));
break;
case DCERPC_PKT_RESPONSE: /* No responses here. */
- DEBUG(0, ("process_complete_pdu: Error. "
- "DCERPC_PKT_RESPONSE received from client "
- "on pipe %s.\n",
- get_pipe_name_from_syntax(talloc_tos(),
- &p->syntax)));
+ DEBUG(0, ("Error - DCERPC_PKT_RESPONSE received from client"));
break;
case DCERPC_PKT_FAULT:
case DCERPC_PKT_CL_CANCEL:
case DCERPC_PKT_FACK:
case DCERPC_PKT_CANCEL_ACK:
- DEBUG(0, ("process_complete_pdu: Error. "
- "Connectionless packet type %u received on "
- "pipe %s.\n", (unsigned int)pkt->ptype,
- get_pipe_name_from_syntax(talloc_tos(),
- &p->syntax)));
+ DEBUG(0, ("Error - Connectionless packet type %u received\n",
+ (unsigned int)pkt->ptype));
break;
case DCERPC_PKT_BIND:
/*
* We assume that a pipe bind is only in one pdu.
*/
- if (pipe_init_outgoing_data(p)) {
- reply = api_pipe_bind_req(p, pkt);
- }
+ reply = api_pipe_bind_req(p, pkt);
break;
case DCERPC_PKT_BIND_ACK:
case DCERPC_PKT_BIND_NAK:
- DEBUG(0, ("process_complete_pdu: Error. "
- "DCERPC_PKT_BINDACK/DCERPC_PKT_BINDNACK "
- "packet type %u received on pipe %s.\n",
- (unsigned int)pkt->ptype,
- get_pipe_name_from_syntax(talloc_tos(),
- &p->syntax)));
+ DEBUG(0, ("Error - DCERPC_PKT_BINDACK/DCERPC_PKT_BINDNACK "
+ "packet type %u received.\n",
+ (unsigned int)pkt->ptype));
break;
/*
* We assume that a pipe bind is only in one pdu.
*/
- if (pipe_init_outgoing_data(p)) {
- reply = api_pipe_alter_context(p, pkt);
- }
+ reply = api_pipe_alter_context(p, pkt);
break;
case DCERPC_PKT_ALTER_RESP:
- DEBUG(0, ("process_complete_pdu: Error. "
- "DCERPC_PKT_ALTER_RESP on pipe %s: "
- "Should only be server -> client.\n",
- get_pipe_name_from_syntax(talloc_tos(),
- &p->syntax)));
+ DEBUG(0, ("Error - DCERPC_PKT_ALTER_RESP received: "
+ "Should only be server -> client.\n"));
break;
case DCERPC_PKT_AUTH3:
/*
- * The third packet in an NTLMSSP auth exchange.
+ * The third packet in an auth exchange.
*/
- if (pipe_init_outgoing_data(p)) {
- reply = api_pipe_bind_auth3(p, pkt);
- }
+ reply = api_pipe_bind_auth3(p, pkt);
break;
case DCERPC_PKT_SHUTDOWN:
- DEBUG(0, ("process_complete_pdu: Error. "
- "DCERPC_PKT_SHUTDOWN on pipe %s: "
- "Should only be server -> client.\n",
- get_pipe_name_from_syntax(talloc_tos(),
- &p->syntax)));
+ DEBUG(0, ("Error - DCERPC_PKT_SHUTDOWN received: "
+ "Should only be server -> client.\n"));
break;
case DCERPC_PKT_CO_CANCEL:
done:
if (!reply) {
- DEBUG(3,("process_complete_pdu: DCE/RPC fault sent on "
- "pipe %s\n", get_pipe_name_from_syntax(talloc_tos(),
- &p->syntax)));
+ DEBUG(3,("DCE/RPC fault sent!"));
set_incoming_fault(p);
setup_fault_pdu(p, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR));
- TALLOC_FREE(pkt);
- } else {
- /*
- * Reset the lengths. We're ready for a new pdu.
- */
- TALLOC_FREE(p->in_data.pdu.data);
- p->in_data.pdu_needed_len = 0;
- p->in_data.pdu.length = 0;
}
-
- TALLOC_FREE(pkt);
+ /* pkt and p->in_data.pdu.data freed by caller */
}
git.samba.org / obnox / samba / samba-obnox.git / blobdiff