2 Unix SMB/CIFS implementation.
4 dcerpc utility functions
6 Copyright (C) Andrew Tridgell 2003
7 Copyright (C) Jelmer Vernooij 2004
8 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
9 Copyright (C) Rafal Szczesniak 2006
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>.
26 #include "lib/events/events.h"
27 #include "libcli/composite/composite.h"
28 #include "librpc/gen_ndr/ndr_epmapper_c.h"
29 #include "librpc/gen_ndr/ndr_dcerpc.h"
30 #include "librpc/gen_ndr/ndr_misc.h"
31 #include "auth/credentials/credentials.h"
34 find a dcerpc call on an interface by name
36 const struct ndr_interface_call *dcerpc_iface_find_call(const struct ndr_interface_table *iface,
40 for (i=0;i<iface->num_calls;i++) {
41 if (strcmp(iface->calls[i].name, name) == 0) {
42 return &iface->calls[i];
49 push a ncacn_packet into a blob, potentially with auth info
51 NTSTATUS ncacn_push_auth(DATA_BLOB *blob, TALLOC_CTX *mem_ctx,
52 struct ncacn_packet *pkt,
53 struct dcerpc_auth *auth_info)
58 ndr = ndr_push_init_ctx(mem_ctx);
60 return NT_STATUS_NO_MEMORY;
63 if (!(pkt->drep[0] & DCERPC_DREP_LE)) {
64 ndr->flags |= LIBNDR_FLAG_BIGENDIAN;
67 if (pkt->pfc_flags & DCERPC_PFC_FLAG_OBJECT_UUID) {
68 ndr->flags |= LIBNDR_FLAG_OBJECT_PRESENT;
72 pkt->auth_length = auth_info->credentials.length;
77 status = ndr_push_ncacn_packet(ndr, NDR_SCALARS|NDR_BUFFERS, pkt);
78 if (!NT_STATUS_IS_OK(status)) {
83 status = ndr_push_dcerpc_auth(ndr, NDR_SCALARS|NDR_BUFFERS, auth_info);
86 *blob = ndr_push_blob(ndr);
88 /* fill in the frag length */
89 dcerpc_set_frag_length(blob, blob->length);
94 #define MAX_PROTSEQ 10
98 enum dcerpc_transport_t transport;
100 enum epm_protocol protseq[MAX_PROTSEQ];
102 { "ncacn_np", NCACN_NP, 3,
103 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_SMB, EPM_PROTOCOL_NETBIOS }},
104 { "ncacn_ip_tcp", NCACN_IP_TCP, 3,
105 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_TCP, EPM_PROTOCOL_IP } },
106 { "ncacn_http", NCACN_HTTP, 3,
107 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_HTTP, EPM_PROTOCOL_IP } },
108 { "ncadg_ip_udp", NCACN_IP_UDP, 3,
109 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_UDP, EPM_PROTOCOL_IP } },
110 { "ncalrpc", NCALRPC, 2,
111 { EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_PIPE } },
112 { "ncacn_unix_stream", NCACN_UNIX_STREAM, 2,
113 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_UNIX_DS } },
114 { "ncadg_unix_dgram", NCADG_UNIX_DGRAM, 2,
115 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_UNIX_DS } },
116 { "ncacn_at_dsp", NCACN_AT_DSP, 3,
117 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_APPLETALK, EPM_PROTOCOL_DSP } },
118 { "ncadg_at_ddp", NCADG_AT_DDP, 3,
119 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_APPLETALK, EPM_PROTOCOL_DDP } },
120 { "ncacn_vns_ssp", NCACN_VNS_SPP, 3,
121 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_STREETTALK, EPM_PROTOCOL_VINES_SPP } },
122 { "ncacn_vns_ipc", NCACN_VNS_IPC, 3,
123 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_STREETTALK, EPM_PROTOCOL_VINES_IPC }, },
124 { "ncadg_ipx", NCADG_IPX, 2,
125 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_IPX },
127 { "ncacn_spx", NCACN_SPX, 3,
128 /* I guess some MS programmer confused the identifier for
129 * EPM_PROTOCOL_UUID (0x0D or 13) with the one for
130 * EPM_PROTOCOL_SPX (0x13) here. -- jelmer*/
131 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_UUID },
135 static const struct {
138 } ncacn_options[] = {
139 {"sign", DCERPC_SIGN},
140 {"seal", DCERPC_SEAL},
141 {"connect", DCERPC_CONNECT},
142 {"spnego", DCERPC_AUTH_SPNEGO},
143 {"ntlm", DCERPC_AUTH_NTLM},
144 {"krb5", DCERPC_AUTH_KRB5},
145 {"validate", DCERPC_DEBUG_VALIDATE_BOTH},
146 {"print", DCERPC_DEBUG_PRINT_BOTH},
147 {"padcheck", DCERPC_DEBUG_PAD_CHECK},
148 {"bigendian", DCERPC_PUSH_BIGENDIAN},
149 {"smb2", DCERPC_SMB2}
152 const char *epm_floor_string(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor)
154 struct ndr_syntax_id syntax;
157 switch(epm_floor->lhs.protocol) {
158 case EPM_PROTOCOL_UUID:
159 status = dcerpc_floor_get_lhs_data(epm_floor, &syntax);
160 if (NT_STATUS_IS_OK(status)) {
161 /* lhs is used: UUID */
164 if (GUID_equal(&syntax.uuid, &ndr_transfer_syntax.uuid)) {
168 if (GUID_equal(&syntax.uuid, &ndr64_transfer_syntax.uuid)) {
172 uuidstr = GUID_string(mem_ctx, &syntax.uuid);
174 return talloc_asprintf(mem_ctx, " uuid %s/0x%02x", uuidstr, syntax.if_version);
176 return talloc_asprintf(mem_ctx, "IPX:%s",
177 data_blob_hex_string(mem_ctx, &epm_floor->rhs.uuid.unknown));
180 case EPM_PROTOCOL_NCACN:
183 case EPM_PROTOCOL_NCADG:
186 case EPM_PROTOCOL_NCALRPC:
189 case EPM_PROTOCOL_DNET_NSP:
192 case EPM_PROTOCOL_IP:
193 return talloc_asprintf(mem_ctx, "IP:%s", epm_floor->rhs.ip.ipaddr);
195 case EPM_PROTOCOL_PIPE:
196 return talloc_asprintf(mem_ctx, "PIPE:%s", epm_floor->rhs.pipe.path);
198 case EPM_PROTOCOL_SMB:
199 return talloc_asprintf(mem_ctx, "SMB:%s", epm_floor->rhs.smb.unc);
201 case EPM_PROTOCOL_UNIX_DS:
202 return talloc_asprintf(mem_ctx, "Unix:%s", epm_floor->rhs.unix_ds.path);
204 case EPM_PROTOCOL_NETBIOS:
205 return talloc_asprintf(mem_ctx, "NetBIOS:%s", epm_floor->rhs.netbios.name);
207 case EPM_PROTOCOL_NETBEUI:
210 case EPM_PROTOCOL_SPX:
213 case EPM_PROTOCOL_NB_IPX:
216 case EPM_PROTOCOL_HTTP:
217 return talloc_asprintf(mem_ctx, "HTTP:%d", epm_floor->rhs.http.port);
219 case EPM_PROTOCOL_TCP:
220 return talloc_asprintf(mem_ctx, "TCP:%d", epm_floor->rhs.tcp.port);
222 case EPM_PROTOCOL_UDP:
223 return talloc_asprintf(mem_ctx, "UDP:%d", epm_floor->rhs.udp.port);
226 return talloc_asprintf(mem_ctx, "UNK(%02x):", epm_floor->lhs.protocol);
232 form a binding string from a binding structure
234 char *dcerpc_binding_string(TALLOC_CTX *mem_ctx, const struct dcerpc_binding *b)
236 char *s = talloc_strdup(mem_ctx, "");
238 const char *t_name=NULL;
240 for (i=0;i<ARRAY_SIZE(transports);i++) {
241 if (transports[i].transport == b->transport) {
242 t_name = transports[i].name;
249 if (!GUID_all_zero(&b->object.uuid)) {
250 s = talloc_asprintf(s, "%s@",
251 GUID_string(mem_ctx, &b->object.uuid));
254 s = talloc_asprintf_append(s, "%s:", t_name);
258 s = talloc_asprintf_append(s, "%s", b->host);
261 if (!b->endpoint && !b->options && !b->flags) {
265 s = talloc_asprintf_append(s, "[");
268 s = talloc_asprintf_append(s, "%s", b->endpoint);
271 /* this is a *really* inefficent way of dealing with strings,
272 but this is rarely called and the strings are always short,
274 for (i=0;b->options && b->options[i];i++) {
275 s = talloc_asprintf_append(s, ",%s", b->options[i]);
279 for (i=0;i<ARRAY_SIZE(ncacn_options);i++) {
280 if (b->flags & ncacn_options[i].flag) {
281 s = talloc_asprintf_append(s, ",%s", ncacn_options[i].name);
286 s = talloc_asprintf_append(s, "]");
292 parse a binding string into a dcerpc_binding structure
294 NTSTATUS dcerpc_parse_binding(TALLOC_CTX *mem_ctx, const char *s, struct dcerpc_binding **b_out)
296 struct dcerpc_binding *b;
297 char *options, *type;
299 int i, j, comma_count;
301 b = talloc(mem_ctx, struct dcerpc_binding);
303 return NT_STATUS_NO_MEMORY;
308 if (p && PTR_DIFF(p, s) == 36) { /* 36 is the length of a UUID */
311 status = GUID_from_string(s, &b->object.uuid);
313 if (NT_STATUS_IS_ERR(status)) {
314 DEBUG(0, ("Failed parsing UUID\n"));
320 ZERO_STRUCT(b->object);
323 b->object.if_version = 0;
327 return NT_STATUS_INVALID_PARAMETER;
330 type = talloc_strndup(mem_ctx, s, PTR_DIFF(p, s));
332 return NT_STATUS_NO_MEMORY;
335 for (i=0;i<ARRAY_SIZE(transports);i++) {
336 if (strcasecmp(type, transports[i].name) == 0) {
337 b->transport = transports[i].transport;
341 if (i==ARRAY_SIZE(transports)) {
342 DEBUG(0,("Unknown dcerpc transport '%s'\n", type));
343 return NT_STATUS_INVALID_PARAMETER;
350 b->host = talloc_strndup(b, s, PTR_DIFF(p, s));
351 options = talloc_strdup(mem_ctx, p+1);
352 if (options[strlen(options)-1] != ']') {
353 return NT_STATUS_INVALID_PARAMETER;
355 options[strlen(options)-1] = 0;
357 b->host = talloc_strdup(b, s);
361 return NT_STATUS_NO_MEMORY;
364 b->target_hostname = b->host;
368 b->assoc_group_id = 0;
376 comma_count = count_chars(options, ',');
378 b->options = talloc_array(b, const char *, comma_count+2);
380 return NT_STATUS_NO_MEMORY;
383 for (i=0; (p = strchr(options, ',')); i++) {
384 b->options[i] = talloc_strndup(b, options, PTR_DIFF(p, options));
385 if (!b->options[i]) {
386 return NT_STATUS_NO_MEMORY;
390 b->options[i] = options;
391 b->options[i+1] = NULL;
393 /* some options are pre-parsed for convenience */
394 for (i=0;b->options[i];i++) {
395 for (j=0;j<ARRAY_SIZE(ncacn_options);j++) {
396 if (strcasecmp(ncacn_options[j].name, b->options[i]) == 0) {
398 b->flags |= ncacn_options[j].flag;
399 for (k=i;b->options[k];k++) {
400 b->options[k] = b->options[k+1];
409 /* Endpoint is first option */
410 b->endpoint = b->options[0];
411 if (strlen(b->endpoint) == 0) b->endpoint = NULL;
413 for (i=0;b->options[i];i++) {
414 b->options[i] = b->options[i+1];
418 if (b->options[0] == NULL)
425 NTSTATUS dcerpc_floor_get_lhs_data(struct epm_floor *epm_floor, struct ndr_syntax_id *syntax)
427 TALLOC_CTX *mem_ctx = talloc_init("floor_get_lhs_data");
428 struct ndr_pull *ndr = ndr_pull_init_blob(&epm_floor->lhs.lhs_data, mem_ctx);
430 uint16_t if_version=0;
432 ndr->flags |= LIBNDR_FLAG_NOALIGN;
434 status = ndr_pull_GUID(ndr, NDR_SCALARS | NDR_BUFFERS, &syntax->uuid);
435 if (NT_STATUS_IS_ERR(status)) {
436 talloc_free(mem_ctx);
440 status = ndr_pull_uint16(ndr, NDR_SCALARS, &if_version);
441 syntax->if_version = if_version;
443 talloc_free(mem_ctx);
448 static DATA_BLOB dcerpc_floor_pack_lhs_data(TALLOC_CTX *mem_ctx, const struct ndr_syntax_id *syntax)
450 struct ndr_push *ndr = ndr_push_init_ctx(mem_ctx);
452 ndr->flags |= LIBNDR_FLAG_NOALIGN;
454 ndr_push_GUID(ndr, NDR_SCALARS | NDR_BUFFERS, &syntax->uuid);
455 ndr_push_uint16(ndr, NDR_SCALARS, syntax->if_version);
457 return ndr_push_blob(ndr);
460 const char *dcerpc_floor_get_rhs_data(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor)
462 switch (epm_floor->lhs.protocol) {
463 case EPM_PROTOCOL_TCP:
464 if (epm_floor->rhs.tcp.port == 0) return NULL;
465 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.tcp.port);
467 case EPM_PROTOCOL_UDP:
468 if (epm_floor->rhs.udp.port == 0) return NULL;
469 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.udp.port);
471 case EPM_PROTOCOL_HTTP:
472 if (epm_floor->rhs.http.port == 0) return NULL;
473 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.http.port);
475 case EPM_PROTOCOL_IP:
476 return talloc_strdup(mem_ctx, epm_floor->rhs.ip.ipaddr);
478 case EPM_PROTOCOL_NCACN:
481 case EPM_PROTOCOL_NCADG:
484 case EPM_PROTOCOL_SMB:
485 if (strlen(epm_floor->rhs.smb.unc) == 0) return NULL;
486 return talloc_strdup(mem_ctx, epm_floor->rhs.smb.unc);
488 case EPM_PROTOCOL_PIPE:
489 if (strlen(epm_floor->rhs.pipe.path) == 0) return NULL;
490 return talloc_strdup(mem_ctx, epm_floor->rhs.pipe.path);
492 case EPM_PROTOCOL_NETBIOS:
493 if (strlen(epm_floor->rhs.netbios.name) == 0) return NULL;
494 return talloc_strdup(mem_ctx, epm_floor->rhs.netbios.name);
496 case EPM_PROTOCOL_NCALRPC:
499 case EPM_PROTOCOL_VINES_SPP:
500 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.vines_spp.port);
502 case EPM_PROTOCOL_VINES_IPC:
503 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.vines_ipc.port);
505 case EPM_PROTOCOL_STREETTALK:
506 return talloc_strdup(mem_ctx, epm_floor->rhs.streettalk.streettalk);
508 case EPM_PROTOCOL_UNIX_DS:
509 if (strlen(epm_floor->rhs.unix_ds.path) == 0) return NULL;
510 return talloc_strdup(mem_ctx, epm_floor->rhs.unix_ds.path);
512 case EPM_PROTOCOL_NULL:
516 DEBUG(0,("Unsupported lhs protocol %d\n", epm_floor->lhs.protocol));
523 static NTSTATUS dcerpc_floor_set_rhs_data(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor, const char *data)
525 switch (epm_floor->lhs.protocol) {
526 case EPM_PROTOCOL_TCP:
527 epm_floor->rhs.tcp.port = atoi(data);
530 case EPM_PROTOCOL_UDP:
531 epm_floor->rhs.udp.port = atoi(data);
534 case EPM_PROTOCOL_HTTP:
535 epm_floor->rhs.http.port = atoi(data);
538 case EPM_PROTOCOL_IP:
539 epm_floor->rhs.ip.ipaddr = talloc_strdup(mem_ctx, data);
540 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.ip.ipaddr);
543 case EPM_PROTOCOL_NCACN:
544 epm_floor->rhs.ncacn.minor_version = 0;
547 case EPM_PROTOCOL_NCADG:
548 epm_floor->rhs.ncadg.minor_version = 0;
551 case EPM_PROTOCOL_SMB:
552 epm_floor->rhs.smb.unc = talloc_strdup(mem_ctx, data);
553 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.smb.unc);
556 case EPM_PROTOCOL_PIPE:
557 epm_floor->rhs.pipe.path = talloc_strdup(mem_ctx, data);
558 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.pipe.path);
561 case EPM_PROTOCOL_NETBIOS:
562 epm_floor->rhs.netbios.name = talloc_strdup(mem_ctx, data);
563 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.netbios.name);
566 case EPM_PROTOCOL_NCALRPC:
569 case EPM_PROTOCOL_VINES_SPP:
570 epm_floor->rhs.vines_spp.port = atoi(data);
573 case EPM_PROTOCOL_VINES_IPC:
574 epm_floor->rhs.vines_ipc.port = atoi(data);
577 case EPM_PROTOCOL_STREETTALK:
578 epm_floor->rhs.streettalk.streettalk = talloc_strdup(mem_ctx, data);
579 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.streettalk.streettalk);
582 case EPM_PROTOCOL_UNIX_DS:
583 epm_floor->rhs.unix_ds.path = talloc_strdup(mem_ctx, data);
584 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.unix_ds.path);
587 case EPM_PROTOCOL_NULL:
591 DEBUG(0,("Unsupported lhs protocol %d\n", epm_floor->lhs.protocol));
595 return NT_STATUS_NOT_SUPPORTED;
598 enum dcerpc_transport_t dcerpc_transport_by_endpoint_protocol(int prot)
602 /* Find a transport that has 'prot' as 4th protocol */
603 for (i=0;i<ARRAY_SIZE(transports);i++) {
604 if (transports[i].num_protocols >= 2 &&
605 transports[i].protseq[1] == prot) {
606 return transports[i].transport;
610 /* Unknown transport */
611 return (unsigned int)-1;
614 enum dcerpc_transport_t dcerpc_transport_by_tower(struct epm_tower *tower)
618 /* Find a transport that matches this tower */
619 for (i=0;i<ARRAY_SIZE(transports);i++) {
621 if (transports[i].num_protocols != tower->num_floors - 2) {
625 for (j = 0; j < transports[i].num_protocols; j++) {
626 if (transports[i].protseq[j] != tower->floors[j+2].lhs.protocol) {
631 if (j == transports[i].num_protocols) {
632 return transports[i].transport;
636 /* Unknown transport */
637 return (unsigned int)-1;
640 NTSTATUS dcerpc_binding_from_tower(TALLOC_CTX *mem_ctx, struct epm_tower *tower, struct dcerpc_binding **b_out)
643 struct dcerpc_binding *binding;
645 binding = talloc(mem_ctx, struct dcerpc_binding);
646 NT_STATUS_HAVE_NO_MEMORY(binding);
648 ZERO_STRUCT(binding->object);
649 binding->options = NULL;
650 binding->host = NULL;
651 binding->target_hostname = NULL;
653 binding->assoc_group_id = 0;
655 binding->transport = dcerpc_transport_by_tower(tower);
657 if (binding->transport == (unsigned int)-1) {
658 return NT_STATUS_NOT_SUPPORTED;
661 if (tower->num_floors < 1) {
665 /* Set object uuid */
666 status = dcerpc_floor_get_lhs_data(&tower->floors[0], &binding->object);
668 if (!NT_STATUS_IS_OK(status)) {
669 DEBUG(1, ("Error pulling object uuid and version: %s", nt_errstr(status)));
673 /* Ignore floor 1, it contains the NDR version info */
675 binding->options = NULL;
678 if (tower->num_floors >= 4) {
679 binding->endpoint = dcerpc_floor_get_rhs_data(mem_ctx, &tower->floors[3]);
681 binding->endpoint = NULL;
684 /* Set network address */
685 if (tower->num_floors >= 5) {
686 binding->host = dcerpc_floor_get_rhs_data(mem_ctx, &tower->floors[4]);
687 NT_STATUS_HAVE_NO_MEMORY(binding->host);
688 binding->target_hostname = binding->host;
694 NTSTATUS dcerpc_binding_build_tower(TALLOC_CTX *mem_ctx, struct dcerpc_binding *binding, struct epm_tower *tower)
696 const enum epm_protocol *protseq = NULL;
697 int num_protocols = -1, i;
701 for (i=0;i<ARRAY_SIZE(transports);i++) {
702 if (transports[i].transport == binding->transport) {
703 protseq = transports[i].protseq;
704 num_protocols = transports[i].num_protocols;
709 if (num_protocols == -1) {
710 DEBUG(0, ("Unable to find transport with id '%d'\n", binding->transport));
711 return NT_STATUS_UNSUCCESSFUL;
714 tower->num_floors = 2 + num_protocols;
715 tower->floors = talloc_array(mem_ctx, struct epm_floor, tower->num_floors);
718 tower->floors[0].lhs.protocol = EPM_PROTOCOL_UUID;
720 tower->floors[0].lhs.lhs_data = dcerpc_floor_pack_lhs_data(mem_ctx, &binding->object);
722 tower->floors[0].rhs.uuid.unknown = data_blob_talloc_zero(mem_ctx, 2);
725 tower->floors[1].lhs.protocol = EPM_PROTOCOL_UUID;
727 tower->floors[1].lhs.lhs_data = dcerpc_floor_pack_lhs_data(mem_ctx,
728 &ndr_transfer_syntax);
730 tower->floors[1].rhs.uuid.unknown = data_blob_talloc_zero(mem_ctx, 2);
732 /* Floor 2 to num_protocols */
733 for (i = 0; i < num_protocols; i++) {
734 tower->floors[2 + i].lhs.protocol = protseq[i];
735 tower->floors[2 + i].lhs.lhs_data = data_blob_talloc(mem_ctx, NULL, 0);
736 ZERO_STRUCT(tower->floors[2 + i].rhs);
737 dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[2 + i], "");
740 /* The 4th floor contains the endpoint */
741 if (num_protocols >= 2 && binding->endpoint) {
742 status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[3], binding->endpoint);
743 if (NT_STATUS_IS_ERR(status)) {
748 /* The 5th contains the network address */
749 if (num_protocols >= 3 && binding->host) {
750 if (is_ipaddress(binding->host)) {
751 status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[4],
754 /* note that we don't attempt to resolve the
755 name here - when we get a hostname here we
756 are in the client code, and want to put in
757 a wildcard all-zeros IP for the server to
759 status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[4],
762 if (NT_STATUS_IS_ERR(status)) {
771 struct epm_map_binding_state {
772 struct dcerpc_binding *binding;
773 const struct ndr_interface_table *table;
774 struct dcerpc_pipe *pipe;
775 struct policy_handle handle;
777 struct epm_twr_t twr;
778 struct epm_twr_t *twr_r;
783 static void continue_epm_recv_binding(struct composite_context *ctx);
784 static void continue_epm_map(struct rpc_request *req);
788 Stage 2 of epm_map_binding: Receive connected rpc pipe and send endpoint
791 static void continue_epm_recv_binding(struct composite_context *ctx)
793 struct rpc_request *map_req;
795 struct composite_context *c = talloc_get_type(ctx->async.private_data,
796 struct composite_context);
797 struct epm_map_binding_state *s = talloc_get_type(c->private_data,
798 struct epm_map_binding_state);
800 /* receive result of rpc pipe connect request */
801 c->status = dcerpc_pipe_connect_b_recv(ctx, c, &s->pipe);
802 if (!composite_is_ok(c)) return;
804 s->pipe->conn->flags |= DCERPC_NDR_REF_ALLOC;
806 /* prepare requested binding parameters */
807 s->binding->object = s->table->syntax_id;
809 c->status = dcerpc_binding_build_tower(s->pipe, s->binding, &s->twr.tower);
810 if (!composite_is_ok(c)) return;
812 /* with some nice pretty paper around it of course */
813 s->r.in.object = &s->guid;
814 s->r.in.map_tower = &s->twr;
815 s->r.in.entry_handle = &s->handle;
816 s->r.in.max_towers = 1;
817 s->r.out.entry_handle = &s->handle;
819 /* send request for an endpoint mapping - a rpc request on connected pipe */
820 map_req = dcerpc_epm_Map_send(s->pipe, c, &s->r);
821 if (composite_nomem(map_req, c)) return;
823 composite_continue_rpc(c, map_req, continue_epm_map, c);
828 Stage 3 of epm_map_binding: Receive endpoint mapping and provide binding details
830 static void continue_epm_map(struct rpc_request *req)
832 struct composite_context *c = talloc_get_type(req->async.private_data,
833 struct composite_context);
834 struct epm_map_binding_state *s = talloc_get_type(c->private_data,
835 struct epm_map_binding_state);
837 /* receive result of a rpc request */
838 c->status = dcerpc_ndr_request_recv(req);
839 if (!composite_is_ok(c)) return;
841 /* check the details */
842 if (s->r.out.result != 0 || *s->r.out.num_towers != 1) {
843 composite_error(c, NT_STATUS_PORT_UNREACHABLE);
847 s->twr_r = s->r.out.towers[0].twr;
848 if (s->twr_r == NULL) {
849 composite_error(c, NT_STATUS_PORT_UNREACHABLE);
853 if (s->twr_r->tower.num_floors != s->twr.tower.num_floors ||
854 s->twr_r->tower.floors[3].lhs.protocol != s->twr.tower.floors[3].lhs.protocol) {
855 composite_error(c, NT_STATUS_PORT_UNREACHABLE);
859 /* get received endpoint */
860 s->binding->endpoint = talloc_reference(s->binding,
861 dcerpc_floor_get_rhs_data(c, &s->twr_r->tower.floors[3]));
862 if (composite_nomem(s->binding->endpoint, c)) return;
869 Request for endpoint mapping of dcerpc binding - try to request for endpoint
870 unless there is default one.
872 struct composite_context *dcerpc_epm_map_binding_send(TALLOC_CTX *mem_ctx,
873 struct dcerpc_binding *binding,
874 const struct ndr_interface_table *table,
875 struct event_context *ev)
877 struct composite_context *c;
878 struct epm_map_binding_state *s;
879 struct composite_context *pipe_connect_req;
880 struct cli_credentials *anon_creds;
881 struct event_context *new_ev = NULL;
884 struct dcerpc_binding *epmapper_binding;
887 /* Try to find event context in memory context in case passed
888 * event_context (argument) was NULL. If there's none, just
892 ev = event_context_find(mem_ctx);
894 new_ev = event_context_init(mem_ctx);
895 if (new_ev == NULL) return NULL;
900 /* composite context allocation and setup */
901 c = composite_create(mem_ctx, ev);
906 talloc_steal(c, new_ev);
908 s = talloc_zero(c, struct epm_map_binding_state);
909 if (composite_nomem(s, c)) return c;
912 s->binding = binding;
915 /* anonymous credentials for rpc connection used to get endpoint mapping */
916 anon_creds = cli_credentials_init(mem_ctx);
917 cli_credentials_set_event_context(anon_creds, ev);
918 cli_credentials_set_conf(anon_creds);
919 cli_credentials_set_anonymous(anon_creds);
922 First, check if there is a default endpoint specified in the IDL
925 struct dcerpc_binding *default_binding;
927 /* Find one of the default pipes for this interface */
928 for (i = 0; i < table->endpoints->count; i++) {
929 status = dcerpc_parse_binding(mem_ctx, table->endpoints->names[i], &default_binding);
931 if (NT_STATUS_IS_OK(status)) {
932 if (default_binding->transport == binding->transport && default_binding->endpoint) {
933 binding->endpoint = talloc_reference(binding, default_binding->endpoint);
934 talloc_free(default_binding);
940 talloc_free(default_binding);
946 epmapper_binding = talloc_zero(c, struct dcerpc_binding);
947 if (composite_nomem(epmapper_binding, c)) return c;
949 /* basic endpoint mapping data */
950 epmapper_binding->transport = binding->transport;
951 epmapper_binding->host = talloc_reference(epmapper_binding, binding->host);
952 epmapper_binding->target_hostname = epmapper_binding->host;
953 epmapper_binding->options = NULL;
954 epmapper_binding->flags = 0;
955 epmapper_binding->assoc_group_id = 0;
956 epmapper_binding->endpoint = NULL;
958 /* initiate rpc pipe connection */
959 pipe_connect_req = dcerpc_pipe_connect_b_send(c, epmapper_binding, &dcerpc_table_epmapper,
960 anon_creds, c->event_ctx);
961 if (composite_nomem(pipe_connect_req, c)) return c;
963 composite_continue(c, pipe_connect_req, continue_epm_recv_binding, c);
969 Receive result of endpoint mapping request
971 NTSTATUS dcerpc_epm_map_binding_recv(struct composite_context *c)
973 NTSTATUS status = composite_wait(c);
981 Get endpoint mapping for rpc connection
983 NTSTATUS dcerpc_epm_map_binding(TALLOC_CTX *mem_ctx, struct dcerpc_binding *binding,
984 const struct ndr_interface_table *table, struct event_context *ev)
986 struct composite_context *c;
988 c = dcerpc_epm_map_binding_send(mem_ctx, binding, table, ev);
989 return dcerpc_epm_map_binding_recv(c);
993 struct pipe_auth_state {
994 struct dcerpc_pipe *pipe;
995 struct dcerpc_binding *binding;
996 const struct ndr_interface_table *table;
997 struct cli_credentials *credentials;
1001 static void continue_auth_schannel(struct composite_context *ctx);
1002 static void continue_auth(struct composite_context *ctx);
1003 static void continue_auth_none(struct composite_context *ctx);
1004 static void continue_ntlmssp_connection(struct composite_context *ctx);
1005 static void continue_spnego_after_wrong_pass(struct composite_context *ctx);
1009 Stage 2 of pipe_auth: Receive result of schannel bind request
1011 static void continue_auth_schannel(struct composite_context *ctx)
1013 struct composite_context *c = talloc_get_type(ctx->async.private_data,
1014 struct composite_context);
1016 c->status = dcerpc_bind_auth_schannel_recv(ctx);
1017 if (!composite_is_ok(c)) return;
1024 Stage 2 of pipe_auth: Receive result of authenticated bind request
1026 static void continue_auth(struct composite_context *ctx)
1028 struct composite_context *c = talloc_get_type(ctx->async.private_data,
1029 struct composite_context);
1031 c->status = dcerpc_bind_auth_recv(ctx);
1032 if (!composite_is_ok(c)) return;
1037 Stage 2 of pipe_auth: Receive result of authenticated bind request, but handle fallbacks:
1040 static void continue_auth_auto(struct composite_context *ctx)
1042 struct composite_context *c = talloc_get_type(ctx->async.private_data,
1043 struct composite_context);
1044 struct pipe_auth_state *s = talloc_get_type(c->private_data, struct pipe_auth_state);
1045 struct composite_context *sec_conn_req;
1047 c->status = dcerpc_bind_auth_recv(ctx);
1048 if (NT_STATUS_EQUAL(c->status, NT_STATUS_INVALID_PARAMETER)) {
1050 * Retry with NTLMSSP auth as fallback
1051 * send a request for secondary rpc connection
1053 sec_conn_req = dcerpc_secondary_connection_send(s->pipe,
1055 composite_continue(c, sec_conn_req, continue_ntlmssp_connection, c);
1057 } else if (NT_STATUS_EQUAL(c->status, NT_STATUS_LOGON_FAILURE)) {
1058 if (cli_credentials_wrong_password(s->credentials)) {
1060 * Retry SPNEGO with a better password
1061 * send a request for secondary rpc connection
1063 sec_conn_req = dcerpc_secondary_connection_send(s->pipe,
1065 composite_continue(c, sec_conn_req, continue_spnego_after_wrong_pass, c);
1070 if (!composite_is_ok(c)) return;
1076 Stage 3 of pipe_auth (fallback to NTLMSSP case): Receive secondary
1077 rpc connection (the first one can't be used any more, due to the
1078 bind nak) and perform authenticated bind request
1080 static void continue_ntlmssp_connection(struct composite_context *ctx)
1082 struct composite_context *c;
1083 struct pipe_auth_state *s;
1084 struct composite_context *auth_req;
1085 struct dcerpc_pipe *p2;
1087 c = talloc_get_type(ctx->async.private_data, struct composite_context);
1088 s = talloc_get_type(c->private_data, struct pipe_auth_state);
1090 /* receive secondary rpc connection */
1091 c->status = dcerpc_secondary_connection_recv(ctx, &p2);
1092 if (!composite_is_ok(c)) return;
1094 talloc_steal(s, p2);
1095 talloc_steal(p2, s->pipe);
1098 /* initiate a authenticated bind */
1099 auth_req = dcerpc_bind_auth_send(c, s->pipe, s->table,
1100 s->credentials, DCERPC_AUTH_TYPE_NTLMSSP,
1101 dcerpc_auth_level(s->pipe->conn),
1102 s->table->authservices->names[0]);
1103 composite_continue(c, auth_req, continue_auth, c);
1107 Stage 3 of pipe_auth (retry on wrong password): Receive secondary
1108 rpc connection (the first one can't be used any more, due to the
1109 bind nak) and perform authenticated bind request
1111 static void continue_spnego_after_wrong_pass(struct composite_context *ctx)
1113 struct composite_context *c;
1114 struct pipe_auth_state *s;
1115 struct composite_context *auth_req;
1116 struct dcerpc_pipe *p2;
1118 c = talloc_get_type(ctx->async.private_data, struct composite_context);
1119 s = talloc_get_type(c->private_data, struct pipe_auth_state);
1121 /* receive secondary rpc connection */
1122 c->status = dcerpc_secondary_connection_recv(ctx, &p2);
1123 if (!composite_is_ok(c)) return;
1125 talloc_steal(s, p2);
1126 talloc_steal(p2, s->pipe);
1129 /* initiate a authenticated bind */
1130 auth_req = dcerpc_bind_auth_send(c, s->pipe, s->table,
1131 s->credentials, DCERPC_AUTH_TYPE_SPNEGO,
1132 dcerpc_auth_level(s->pipe->conn),
1133 s->table->authservices->names[0]);
1134 composite_continue(c, auth_req, continue_auth, c);
1139 Stage 2 of pipe_auth: Receive result of non-authenticated bind request
1141 static void continue_auth_none(struct composite_context *ctx)
1143 struct composite_context *c = talloc_get_type(ctx->async.private_data,
1144 struct composite_context);
1146 c->status = dcerpc_bind_auth_none_recv(ctx);
1147 if (!composite_is_ok(c)) return;
1154 Request to perform an authenticated bind if required. Authentication
1155 is determined using credentials passed and binding flags.
1157 struct composite_context *dcerpc_pipe_auth_send(struct dcerpc_pipe *p,
1158 struct dcerpc_binding *binding,
1159 const struct ndr_interface_table *table,
1160 struct cli_credentials *credentials)
1162 struct composite_context *c;
1163 struct pipe_auth_state *s;
1164 struct composite_context *auth_schannel_req;
1165 struct composite_context *auth_req;
1166 struct composite_context *auth_none_req;
1167 struct dcerpc_connection *conn;
1170 /* composite context allocation and setup */
1171 c = composite_create(p, p->conn->event_ctx);
1172 if (c == NULL) return NULL;
1174 s = talloc_zero(c, struct pipe_auth_state);
1175 if (composite_nomem(s, c)) return c;
1176 c->private_data = s;
1178 /* store parameters in state structure */
1179 s->binding = binding;
1181 s->credentials = credentials;
1184 conn = s->pipe->conn;
1185 conn->flags = binding->flags;
1187 /* remember the binding string for possible secondary connections */
1188 conn->binding_string = dcerpc_binding_string(p, binding);
1190 if (cli_credentials_is_anonymous(s->credentials)) {
1191 auth_none_req = dcerpc_bind_auth_none_send(c, s->pipe, s->table);
1192 composite_continue(c, auth_none_req, continue_auth_none, c);
1196 if ((binding->flags & DCERPC_SCHANNEL) &&
1197 !cli_credentials_get_netlogon_creds(s->credentials)) {
1198 /* If we don't already have netlogon credentials for
1199 * the schannel bind, then we have to get these
1201 auth_schannel_req = dcerpc_bind_auth_schannel_send(c, s->pipe, s->table,
1203 dcerpc_auth_level(conn));
1204 composite_continue(c, auth_schannel_req, continue_auth_schannel, c);
1209 * we rely on the already authenticated CIFS connection
1210 * if not doing sign or seal
1212 if (conn->transport.transport == NCACN_NP &&
1213 !(s->binding->flags & (DCERPC_SIGN|DCERPC_SEAL))) {
1214 auth_none_req = dcerpc_bind_auth_none_send(c, s->pipe, s->table);
1215 composite_continue(c, auth_none_req, continue_auth_none, c);
1220 /* Perform an authenticated DCE-RPC bind
1222 if (!(conn->flags & (DCERPC_SIGN|DCERPC_SEAL))) {
1224 we are doing an authenticated connection,
1225 but not using sign or seal. We must force
1226 the CONNECT dcerpc auth type as a NONE auth
1227 type doesn't allow authentication
1228 information to be passed.
1230 conn->flags |= DCERPC_CONNECT;
1233 if (s->binding->flags & DCERPC_AUTH_SPNEGO) {
1234 auth_type = DCERPC_AUTH_TYPE_SPNEGO;
1236 } else if (s->binding->flags & DCERPC_AUTH_KRB5) {
1237 auth_type = DCERPC_AUTH_TYPE_KRB5;
1239 } else if (s->binding->flags & DCERPC_SCHANNEL) {
1240 auth_type = DCERPC_AUTH_TYPE_SCHANNEL;
1242 } else if (s->binding->flags & DCERPC_AUTH_NTLM) {
1243 auth_type = DCERPC_AUTH_TYPE_NTLMSSP;
1246 /* try SPNEGO with fallback to NTLMSSP */
1247 auth_req = dcerpc_bind_auth_send(c, s->pipe, s->table,
1248 s->credentials, DCERPC_AUTH_TYPE_SPNEGO,
1249 dcerpc_auth_level(conn),
1250 s->table->authservices->names[0]);
1251 composite_continue(c, auth_req, continue_auth_auto, c);
1255 auth_req = dcerpc_bind_auth_send(c, s->pipe, s->table,
1256 s->credentials, auth_type,
1257 dcerpc_auth_level(conn),
1258 s->table->authservices->names[0]);
1259 composite_continue(c, auth_req, continue_auth, c);
1265 Receive result of authenticated bind request on dcerpc pipe
1267 This returns *p, which may be different to the one originally
1268 supllied, as it rebinds to a new pipe due to authentication fallback
1271 NTSTATUS dcerpc_pipe_auth_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
1272 struct dcerpc_pipe **p)
1276 struct pipe_auth_state *s = talloc_get_type(c->private_data,
1277 struct pipe_auth_state);
1278 status = composite_wait(c);
1279 if (!NT_STATUS_IS_OK(status)) {
1280 char *uuid_str = GUID_string(s->pipe, &s->table->syntax_id.uuid);
1281 DEBUG(0, ("Failed to bind to uuid %s - %s\n", uuid_str, nt_errstr(status)));
1282 talloc_free(uuid_str);
1284 talloc_steal(mem_ctx, s->pipe);
1294 Perform an authenticated bind if needed - sync version
1296 This may change *p, as it rebinds to a new pipe due to authentication fallback
1298 NTSTATUS dcerpc_pipe_auth(TALLOC_CTX *mem_ctx,
1299 struct dcerpc_pipe **p,
1300 struct dcerpc_binding *binding,
1301 const struct ndr_interface_table *table,
1302 struct cli_credentials *credentials)
1304 struct composite_context *c;
1306 c = dcerpc_pipe_auth_send(*p, binding, table, credentials);
1307 return dcerpc_pipe_auth_recv(c, mem_ctx, p);
1311 NTSTATUS dcerpc_generic_session_key(struct dcerpc_connection *c,
1312 DATA_BLOB *session_key)
1314 /* this took quite a few CPU cycles to find ... */
1315 session_key->data = discard_const_p(unsigned char, "SystemLibraryDTC");
1316 session_key->length = 16;
1317 return NT_STATUS_OK;
1321 fetch the user session key - may be default (above) or the SMB session key
1323 NTSTATUS dcerpc_fetch_session_key(struct dcerpc_pipe *p,
1324 DATA_BLOB *session_key)
1326 return p->conn->security_state.session_key(p->conn, session_key);
1331 log a rpc packet in a format suitable for ndrdump. This is especially useful
1332 for sealed packets, where ethereal cannot easily see the contents
1334 this triggers on a debug level of >= 10
1336 void dcerpc_log_packet(const struct ndr_interface_table *ndr,
1337 uint32_t opnum, uint32_t flags, DATA_BLOB *pkt)
1339 const int num_examples = 20;
1342 if (DEBUGLEVEL < 10) return;
1344 for (i=0;i<num_examples;i++) {
1346 asprintf(&name, "%s/rpclog/%s-%u.%d.%s",
1347 lp_lockdir(), ndr->name, opnum, i,
1348 (flags&NDR_IN)?"in":"out");
1352 if (!file_exist(name)) {
1353 if (file_save(name, pkt->data, pkt->length)) {
1354 DEBUG(10,("Logged rpc packet to %s\n", name));
1366 create a secondary context from a primary connection
1368 this uses dcerpc_alter_context() to create a new dcerpc context_id
1370 NTSTATUS dcerpc_secondary_context(struct dcerpc_pipe *p,
1371 struct dcerpc_pipe **pp2,
1372 const struct ndr_interface_table *table)
1375 struct dcerpc_pipe *p2;
1377 p2 = talloc_zero(p, struct dcerpc_pipe);
1379 return NT_STATUS_NO_MEMORY;
1381 p2->conn = talloc_reference(p2, p->conn);
1382 p2->request_timeout = p->request_timeout;
1384 p2->context_id = ++p->conn->next_context_id;
1386 p2->syntax = table->syntax_id;
1388 p2->transfer_syntax = ndr_transfer_syntax;
1390 p2->binding = talloc_reference(p2, p->binding);
1392 status = dcerpc_alter_context(p2, p2, &p2->syntax, &p2->transfer_syntax);
1393 if (!NT_STATUS_IS_OK(status)) {