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"
32 #include "param/param.h"
35 find a dcerpc call on an interface by name
37 const struct ndr_interface_call *dcerpc_iface_find_call(const struct ndr_interface_table *iface,
41 for (i=0;i<iface->num_calls;i++) {
42 if (strcmp(iface->calls[i].name, name) == 0) {
43 return &iface->calls[i];
50 push a ncacn_packet into a blob, potentially with auth info
52 NTSTATUS ncacn_push_auth(DATA_BLOB *blob, TALLOC_CTX *mem_ctx,
53 struct ncacn_packet *pkt,
54 struct dcerpc_auth *auth_info)
57 enum ndr_err_code ndr_err;
59 ndr = ndr_push_init_ctx(mem_ctx, lp_iconv_convenience(global_loadparm));
61 return NT_STATUS_NO_MEMORY;
64 if (!(pkt->drep[0] & DCERPC_DREP_LE)) {
65 ndr->flags |= LIBNDR_FLAG_BIGENDIAN;
68 if (pkt->pfc_flags & DCERPC_PFC_FLAG_OBJECT_UUID) {
69 ndr->flags |= LIBNDR_FLAG_OBJECT_PRESENT;
73 pkt->auth_length = auth_info->credentials.length;
78 ndr_err = ndr_push_ncacn_packet(ndr, NDR_SCALARS|NDR_BUFFERS, pkt);
79 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
80 return ndr_map_error2ntstatus(ndr_err);
84 ndr_err = ndr_push_dcerpc_auth(ndr, NDR_SCALARS|NDR_BUFFERS, auth_info);
85 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
86 return ndr_map_error2ntstatus(ndr_err);
90 *blob = ndr_push_blob(ndr);
92 /* fill in the frag length */
93 dcerpc_set_frag_length(blob, blob->length);
98 #define MAX_PROTSEQ 10
100 static const struct {
102 enum dcerpc_transport_t transport;
104 enum epm_protocol protseq[MAX_PROTSEQ];
106 { "ncacn_np", NCACN_NP, 3,
107 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_SMB, EPM_PROTOCOL_NETBIOS }},
108 { "ncacn_ip_tcp", NCACN_IP_TCP, 3,
109 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_TCP, EPM_PROTOCOL_IP } },
110 { "ncacn_http", NCACN_HTTP, 3,
111 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_HTTP, EPM_PROTOCOL_IP } },
112 { "ncadg_ip_udp", NCACN_IP_UDP, 3,
113 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_UDP, EPM_PROTOCOL_IP } },
114 { "ncalrpc", NCALRPC, 2,
115 { EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_PIPE } },
116 { "ncacn_unix_stream", NCACN_UNIX_STREAM, 2,
117 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_UNIX_DS } },
118 { "ncadg_unix_dgram", NCADG_UNIX_DGRAM, 2,
119 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_UNIX_DS } },
120 { "ncacn_at_dsp", NCACN_AT_DSP, 3,
121 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_APPLETALK, EPM_PROTOCOL_DSP } },
122 { "ncadg_at_ddp", NCADG_AT_DDP, 3,
123 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_APPLETALK, EPM_PROTOCOL_DDP } },
124 { "ncacn_vns_ssp", NCACN_VNS_SPP, 3,
125 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_STREETTALK, EPM_PROTOCOL_VINES_SPP } },
126 { "ncacn_vns_ipc", NCACN_VNS_IPC, 3,
127 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_STREETTALK, EPM_PROTOCOL_VINES_IPC }, },
128 { "ncadg_ipx", NCADG_IPX, 2,
129 { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_IPX },
131 { "ncacn_spx", NCACN_SPX, 3,
132 /* I guess some MS programmer confused the identifier for
133 * EPM_PROTOCOL_UUID (0x0D or 13) with the one for
134 * EPM_PROTOCOL_SPX (0x13) here. -- jelmer*/
135 { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_UUID },
139 static const struct {
142 } ncacn_options[] = {
143 {"sign", DCERPC_SIGN},
144 {"seal", DCERPC_SEAL},
145 {"connect", DCERPC_CONNECT},
146 {"spnego", DCERPC_AUTH_SPNEGO},
147 {"ntlm", DCERPC_AUTH_NTLM},
148 {"krb5", DCERPC_AUTH_KRB5},
149 {"validate", DCERPC_DEBUG_VALIDATE_BOTH},
150 {"print", DCERPC_DEBUG_PRINT_BOTH},
151 {"padcheck", DCERPC_DEBUG_PAD_CHECK},
152 {"bigendian", DCERPC_PUSH_BIGENDIAN},
153 {"smb2", DCERPC_SMB2}
156 const char *epm_floor_string(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor)
158 struct ndr_syntax_id syntax;
161 switch(epm_floor->lhs.protocol) {
162 case EPM_PROTOCOL_UUID:
163 status = dcerpc_floor_get_lhs_data(epm_floor, &syntax);
164 if (NT_STATUS_IS_OK(status)) {
165 /* lhs is used: UUID */
168 if (GUID_equal(&syntax.uuid, &ndr_transfer_syntax.uuid)) {
172 if (GUID_equal(&syntax.uuid, &ndr64_transfer_syntax.uuid)) {
176 uuidstr = GUID_string(mem_ctx, &syntax.uuid);
178 return talloc_asprintf(mem_ctx, " uuid %s/0x%02x", uuidstr, syntax.if_version);
180 return talloc_asprintf(mem_ctx, "IPX:%s",
181 data_blob_hex_string(mem_ctx, &epm_floor->rhs.uuid.unknown));
184 case EPM_PROTOCOL_NCACN:
187 case EPM_PROTOCOL_NCADG:
190 case EPM_PROTOCOL_NCALRPC:
193 case EPM_PROTOCOL_DNET_NSP:
196 case EPM_PROTOCOL_IP:
197 return talloc_asprintf(mem_ctx, "IP:%s", epm_floor->rhs.ip.ipaddr);
199 case EPM_PROTOCOL_PIPE:
200 return talloc_asprintf(mem_ctx, "PIPE:%s", epm_floor->rhs.pipe.path);
202 case EPM_PROTOCOL_SMB:
203 return talloc_asprintf(mem_ctx, "SMB:%s", epm_floor->rhs.smb.unc);
205 case EPM_PROTOCOL_UNIX_DS:
206 return talloc_asprintf(mem_ctx, "Unix:%s", epm_floor->rhs.unix_ds.path);
208 case EPM_PROTOCOL_NETBIOS:
209 return talloc_asprintf(mem_ctx, "NetBIOS:%s", epm_floor->rhs.netbios.name);
211 case EPM_PROTOCOL_NETBEUI:
214 case EPM_PROTOCOL_SPX:
217 case EPM_PROTOCOL_NB_IPX:
220 case EPM_PROTOCOL_HTTP:
221 return talloc_asprintf(mem_ctx, "HTTP:%d", epm_floor->rhs.http.port);
223 case EPM_PROTOCOL_TCP:
224 return talloc_asprintf(mem_ctx, "TCP:%d", epm_floor->rhs.tcp.port);
226 case EPM_PROTOCOL_UDP:
227 return talloc_asprintf(mem_ctx, "UDP:%d", epm_floor->rhs.udp.port);
230 return talloc_asprintf(mem_ctx, "UNK(%02x):", epm_floor->lhs.protocol);
236 form a binding string from a binding structure
238 char *dcerpc_binding_string(TALLOC_CTX *mem_ctx, const struct dcerpc_binding *b)
240 char *s = talloc_strdup(mem_ctx, "");
242 const char *t_name = NULL;
244 if (b->transport != NCA_UNKNOWN) {
245 for (i=0;i<ARRAY_SIZE(transports);i++) {
246 if (transports[i].transport == b->transport) {
247 t_name = transports[i].name;
255 if (!GUID_all_zero(&b->object.uuid)) {
256 s = talloc_asprintf(s, "%s@",
257 GUID_string(mem_ctx, &b->object.uuid));
260 if (t_name != NULL) {
261 s = talloc_asprintf_append_buffer(s, "%s:", t_name);
268 s = talloc_asprintf_append_buffer(s, "%s", b->host);
271 if (!b->endpoint && !b->options && !b->flags) {
275 s = talloc_asprintf_append_buffer(s, "[");
278 s = talloc_asprintf_append_buffer(s, "%s", b->endpoint);
281 /* this is a *really* inefficent way of dealing with strings,
282 but this is rarely called and the strings are always short,
284 for (i=0;b->options && b->options[i];i++) {
285 s = talloc_asprintf_append_buffer(s, ",%s", b->options[i]);
289 for (i=0;i<ARRAY_SIZE(ncacn_options);i++) {
290 if (b->flags & ncacn_options[i].flag) {
291 s = talloc_asprintf_append_buffer(s, ",%s", ncacn_options[i].name);
296 s = talloc_asprintf_append_buffer(s, "]");
302 parse a binding string into a dcerpc_binding structure
304 NTSTATUS dcerpc_parse_binding(TALLOC_CTX *mem_ctx, const char *s, struct dcerpc_binding **b_out)
306 struct dcerpc_binding *b;
309 int i, j, comma_count;
311 b = talloc(mem_ctx, struct dcerpc_binding);
313 return NT_STATUS_NO_MEMORY;
318 if (p && PTR_DIFF(p, s) == 36) { /* 36 is the length of a UUID */
321 status = GUID_from_string(s, &b->object.uuid);
323 if (NT_STATUS_IS_ERR(status)) {
324 DEBUG(0, ("Failed parsing UUID\n"));
330 ZERO_STRUCT(b->object);
333 b->object.if_version = 0;
338 b->transport = NCA_UNKNOWN;
340 char *type = talloc_strndup(mem_ctx, s, PTR_DIFF(p, s));
342 return NT_STATUS_NO_MEMORY;
345 for (i=0;i<ARRAY_SIZE(transports);i++) {
346 if (strcasecmp(type, transports[i].name) == 0) {
347 b->transport = transports[i].transport;
352 if (i==ARRAY_SIZE(transports)) {
353 DEBUG(0,("Unknown dcerpc transport '%s'\n", type));
354 return NT_STATUS_INVALID_PARAMETER;
364 b->host = talloc_strndup(b, s, PTR_DIFF(p, s));
365 options = talloc_strdup(mem_ctx, p+1);
366 if (options[strlen(options)-1] != ']') {
367 return NT_STATUS_INVALID_PARAMETER;
369 options[strlen(options)-1] = 0;
371 b->host = talloc_strdup(b, s);
375 return NT_STATUS_NO_MEMORY;
378 b->target_hostname = b->host;
382 b->assoc_group_id = 0;
390 comma_count = count_chars(options, ',');
392 b->options = talloc_array(b, const char *, comma_count+2);
394 return NT_STATUS_NO_MEMORY;
397 for (i=0; (p = strchr(options, ',')); i++) {
398 b->options[i] = talloc_strndup(b, options, PTR_DIFF(p, options));
399 if (!b->options[i]) {
400 return NT_STATUS_NO_MEMORY;
404 b->options[i] = options;
405 b->options[i+1] = NULL;
407 /* some options are pre-parsed for convenience */
408 for (i=0;b->options[i];i++) {
409 for (j=0;j<ARRAY_SIZE(ncacn_options);j++) {
410 if (strcasecmp(ncacn_options[j].name, b->options[i]) == 0) {
412 b->flags |= ncacn_options[j].flag;
413 for (k=i;b->options[k];k++) {
414 b->options[k] = b->options[k+1];
423 /* Endpoint is first option */
424 b->endpoint = b->options[0];
425 if (strlen(b->endpoint) == 0) b->endpoint = NULL;
427 for (i=0;b->options[i];i++) {
428 b->options[i] = b->options[i+1];
432 if (b->options[0] == NULL)
439 NTSTATUS dcerpc_floor_get_lhs_data(struct epm_floor *epm_floor, struct ndr_syntax_id *syntax)
441 TALLOC_CTX *mem_ctx = talloc_init("floor_get_lhs_data");
442 struct ndr_pull *ndr = ndr_pull_init_blob(&epm_floor->lhs.lhs_data, mem_ctx, NULL);
443 enum ndr_err_code ndr_err;
444 uint16_t if_version=0;
446 ndr->flags |= LIBNDR_FLAG_NOALIGN;
448 ndr_err = ndr_pull_GUID(ndr, NDR_SCALARS | NDR_BUFFERS, &syntax->uuid);
449 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
450 talloc_free(mem_ctx);
451 return ndr_map_error2ntstatus(ndr_err);
454 ndr_err = ndr_pull_uint16(ndr, NDR_SCALARS, &if_version);
455 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
456 talloc_free(mem_ctx);
457 return ndr_map_error2ntstatus(ndr_err);
460 syntax->if_version = if_version;
462 talloc_free(mem_ctx);
467 static DATA_BLOB dcerpc_floor_pack_lhs_data(TALLOC_CTX *mem_ctx, const struct ndr_syntax_id *syntax)
469 struct ndr_push *ndr = ndr_push_init_ctx(mem_ctx, NULL);
471 ndr->flags |= LIBNDR_FLAG_NOALIGN;
473 ndr_push_GUID(ndr, NDR_SCALARS | NDR_BUFFERS, &syntax->uuid);
474 ndr_push_uint16(ndr, NDR_SCALARS, syntax->if_version);
476 return ndr_push_blob(ndr);
479 const char *dcerpc_floor_get_rhs_data(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor)
481 switch (epm_floor->lhs.protocol) {
482 case EPM_PROTOCOL_TCP:
483 if (epm_floor->rhs.tcp.port == 0) return NULL;
484 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.tcp.port);
486 case EPM_PROTOCOL_UDP:
487 if (epm_floor->rhs.udp.port == 0) return NULL;
488 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.udp.port);
490 case EPM_PROTOCOL_HTTP:
491 if (epm_floor->rhs.http.port == 0) return NULL;
492 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.http.port);
494 case EPM_PROTOCOL_IP:
495 return talloc_strdup(mem_ctx, epm_floor->rhs.ip.ipaddr);
497 case EPM_PROTOCOL_NCACN:
500 case EPM_PROTOCOL_NCADG:
503 case EPM_PROTOCOL_SMB:
504 if (strlen(epm_floor->rhs.smb.unc) == 0) return NULL;
505 return talloc_strdup(mem_ctx, epm_floor->rhs.smb.unc);
507 case EPM_PROTOCOL_PIPE:
508 if (strlen(epm_floor->rhs.pipe.path) == 0) return NULL;
509 return talloc_strdup(mem_ctx, epm_floor->rhs.pipe.path);
511 case EPM_PROTOCOL_NETBIOS:
512 if (strlen(epm_floor->rhs.netbios.name) == 0) return NULL;
513 return talloc_strdup(mem_ctx, epm_floor->rhs.netbios.name);
515 case EPM_PROTOCOL_NCALRPC:
518 case EPM_PROTOCOL_VINES_SPP:
519 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.vines_spp.port);
521 case EPM_PROTOCOL_VINES_IPC:
522 return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.vines_ipc.port);
524 case EPM_PROTOCOL_STREETTALK:
525 return talloc_strdup(mem_ctx, epm_floor->rhs.streettalk.streettalk);
527 case EPM_PROTOCOL_UNIX_DS:
528 if (strlen(epm_floor->rhs.unix_ds.path) == 0) return NULL;
529 return talloc_strdup(mem_ctx, epm_floor->rhs.unix_ds.path);
531 case EPM_PROTOCOL_NULL:
535 DEBUG(0,("Unsupported lhs protocol %d\n", epm_floor->lhs.protocol));
542 static NTSTATUS dcerpc_floor_set_rhs_data(TALLOC_CTX *mem_ctx,
543 struct epm_floor *epm_floor,
546 switch (epm_floor->lhs.protocol) {
547 case EPM_PROTOCOL_TCP:
548 epm_floor->rhs.tcp.port = atoi(data);
551 case EPM_PROTOCOL_UDP:
552 epm_floor->rhs.udp.port = atoi(data);
555 case EPM_PROTOCOL_HTTP:
556 epm_floor->rhs.http.port = atoi(data);
559 case EPM_PROTOCOL_IP:
560 epm_floor->rhs.ip.ipaddr = talloc_strdup(mem_ctx, data);
561 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.ip.ipaddr);
564 case EPM_PROTOCOL_NCACN:
565 epm_floor->rhs.ncacn.minor_version = 0;
568 case EPM_PROTOCOL_NCADG:
569 epm_floor->rhs.ncadg.minor_version = 0;
572 case EPM_PROTOCOL_SMB:
573 epm_floor->rhs.smb.unc = talloc_strdup(mem_ctx, data);
574 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.smb.unc);
577 case EPM_PROTOCOL_PIPE:
578 epm_floor->rhs.pipe.path = talloc_strdup(mem_ctx, data);
579 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.pipe.path);
582 case EPM_PROTOCOL_NETBIOS:
583 epm_floor->rhs.netbios.name = talloc_strdup(mem_ctx, data);
584 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.netbios.name);
587 case EPM_PROTOCOL_NCALRPC:
590 case EPM_PROTOCOL_VINES_SPP:
591 epm_floor->rhs.vines_spp.port = atoi(data);
594 case EPM_PROTOCOL_VINES_IPC:
595 epm_floor->rhs.vines_ipc.port = atoi(data);
598 case EPM_PROTOCOL_STREETTALK:
599 epm_floor->rhs.streettalk.streettalk = talloc_strdup(mem_ctx, data);
600 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.streettalk.streettalk);
603 case EPM_PROTOCOL_UNIX_DS:
604 epm_floor->rhs.unix_ds.path = talloc_strdup(mem_ctx, data);
605 NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.unix_ds.path);
608 case EPM_PROTOCOL_NULL:
612 DEBUG(0,("Unsupported lhs protocol %d\n", epm_floor->lhs.protocol));
616 return NT_STATUS_NOT_SUPPORTED;
619 enum dcerpc_transport_t dcerpc_transport_by_endpoint_protocol(int prot)
623 /* Find a transport that has 'prot' as 4th protocol */
624 for (i=0;i<ARRAY_SIZE(transports);i++) {
625 if (transports[i].num_protocols >= 2 &&
626 transports[i].protseq[1] == prot) {
627 return transports[i].transport;
631 /* Unknown transport */
632 return (unsigned int)-1;
635 enum dcerpc_transport_t dcerpc_transport_by_tower(struct epm_tower *tower)
639 /* Find a transport that matches this tower */
640 for (i=0;i<ARRAY_SIZE(transports);i++) {
642 if (transports[i].num_protocols != tower->num_floors - 2) {
646 for (j = 0; j < transports[i].num_protocols; j++) {
647 if (transports[i].protseq[j] != tower->floors[j+2].lhs.protocol) {
652 if (j == transports[i].num_protocols) {
653 return transports[i].transport;
657 /* Unknown transport */
658 return (unsigned int)-1;
661 NTSTATUS dcerpc_binding_from_tower(TALLOC_CTX *mem_ctx,
662 struct epm_tower *tower,
663 struct dcerpc_binding **b_out)
666 struct dcerpc_binding *binding;
668 binding = talloc(mem_ctx, struct dcerpc_binding);
669 NT_STATUS_HAVE_NO_MEMORY(binding);
671 ZERO_STRUCT(binding->object);
672 binding->options = NULL;
673 binding->host = NULL;
674 binding->target_hostname = NULL;
676 binding->assoc_group_id = 0;
678 binding->transport = dcerpc_transport_by_tower(tower);
680 if (binding->transport == (unsigned int)-1) {
681 return NT_STATUS_NOT_SUPPORTED;
684 if (tower->num_floors < 1) {
688 /* Set object uuid */
689 status = dcerpc_floor_get_lhs_data(&tower->floors[0], &binding->object);
691 if (!NT_STATUS_IS_OK(status)) {
692 DEBUG(1, ("Error pulling object uuid and version: %s", nt_errstr(status)));
696 /* Ignore floor 1, it contains the NDR version info */
698 binding->options = NULL;
701 if (tower->num_floors >= 4) {
702 binding->endpoint = dcerpc_floor_get_rhs_data(mem_ctx, &tower->floors[3]);
704 binding->endpoint = NULL;
707 /* Set network address */
708 if (tower->num_floors >= 5) {
709 binding->host = dcerpc_floor_get_rhs_data(mem_ctx, &tower->floors[4]);
710 NT_STATUS_HAVE_NO_MEMORY(binding->host);
711 binding->target_hostname = binding->host;
717 NTSTATUS dcerpc_binding_build_tower(TALLOC_CTX *mem_ctx, struct dcerpc_binding *binding, struct epm_tower *tower)
719 const enum epm_protocol *protseq = NULL;
720 int num_protocols = -1, i;
724 for (i=0;i<ARRAY_SIZE(transports);i++) {
725 if (transports[i].transport == binding->transport) {
726 protseq = transports[i].protseq;
727 num_protocols = transports[i].num_protocols;
732 if (num_protocols == -1) {
733 DEBUG(0, ("Unable to find transport with id '%d'\n", binding->transport));
734 return NT_STATUS_UNSUCCESSFUL;
737 tower->num_floors = 2 + num_protocols;
738 tower->floors = talloc_array(mem_ctx, struct epm_floor, tower->num_floors);
741 tower->floors[0].lhs.protocol = EPM_PROTOCOL_UUID;
743 tower->floors[0].lhs.lhs_data = dcerpc_floor_pack_lhs_data(mem_ctx, &binding->object);
745 tower->floors[0].rhs.uuid.unknown = data_blob_talloc_zero(mem_ctx, 2);
748 tower->floors[1].lhs.protocol = EPM_PROTOCOL_UUID;
750 tower->floors[1].lhs.lhs_data = dcerpc_floor_pack_lhs_data(mem_ctx,
751 &ndr_transfer_syntax);
753 tower->floors[1].rhs.uuid.unknown = data_blob_talloc_zero(mem_ctx, 2);
755 /* Floor 2 to num_protocols */
756 for (i = 0; i < num_protocols; i++) {
757 tower->floors[2 + i].lhs.protocol = protseq[i];
758 tower->floors[2 + i].lhs.lhs_data = data_blob_talloc(mem_ctx, NULL, 0);
759 ZERO_STRUCT(tower->floors[2 + i].rhs);
760 dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[2 + i], "");
763 /* The 4th floor contains the endpoint */
764 if (num_protocols >= 2 && binding->endpoint) {
765 status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[3], binding->endpoint);
766 if (NT_STATUS_IS_ERR(status)) {
771 /* The 5th contains the network address */
772 if (num_protocols >= 3 && binding->host) {
773 if (is_ipaddress(binding->host)) {
774 status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[4],
777 /* note that we don't attempt to resolve the
778 name here - when we get a hostname here we
779 are in the client code, and want to put in
780 a wildcard all-zeros IP for the server to
782 status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[4],
785 if (NT_STATUS_IS_ERR(status)) {
794 struct epm_map_binding_state {
795 struct dcerpc_binding *binding;
796 const struct ndr_interface_table *table;
797 struct dcerpc_pipe *pipe;
798 struct policy_handle handle;
800 struct epm_twr_t twr;
801 struct epm_twr_t *twr_r;
806 static void continue_epm_recv_binding(struct composite_context *ctx);
807 static void continue_epm_map(struct rpc_request *req);
811 Stage 2 of epm_map_binding: Receive connected rpc pipe and send endpoint
814 static void continue_epm_recv_binding(struct composite_context *ctx)
816 struct rpc_request *map_req;
818 struct composite_context *c = talloc_get_type(ctx->async.private_data,
819 struct composite_context);
820 struct epm_map_binding_state *s = talloc_get_type(c->private_data,
821 struct epm_map_binding_state);
823 /* receive result of rpc pipe connect request */
824 c->status = dcerpc_pipe_connect_b_recv(ctx, c, &s->pipe);
825 if (!composite_is_ok(c)) return;
827 s->pipe->conn->flags |= DCERPC_NDR_REF_ALLOC;
829 /* prepare requested binding parameters */
830 s->binding->object = s->table->syntax_id;
832 c->status = dcerpc_binding_build_tower(s->pipe, s->binding, &s->twr.tower);
833 if (!composite_is_ok(c)) return;
835 /* with some nice pretty paper around it of course */
836 s->r.in.object = &s->guid;
837 s->r.in.map_tower = &s->twr;
838 s->r.in.entry_handle = &s->handle;
839 s->r.in.max_towers = 1;
840 s->r.out.entry_handle = &s->handle;
842 /* send request for an endpoint mapping - a rpc request on connected pipe */
843 map_req = dcerpc_epm_Map_send(s->pipe, c, &s->r);
844 if (composite_nomem(map_req, c)) return;
846 composite_continue_rpc(c, map_req, continue_epm_map, c);
851 Stage 3 of epm_map_binding: Receive endpoint mapping and provide binding details
853 static void continue_epm_map(struct rpc_request *req)
855 struct composite_context *c = talloc_get_type(req->async.private_data,
856 struct composite_context);
857 struct epm_map_binding_state *s = talloc_get_type(c->private_data,
858 struct epm_map_binding_state);
860 /* receive result of a rpc request */
861 c->status = dcerpc_ndr_request_recv(req);
862 if (!composite_is_ok(c)) return;
864 /* check the details */
865 if (s->r.out.result != 0 || *s->r.out.num_towers != 1) {
866 composite_error(c, NT_STATUS_PORT_UNREACHABLE);
870 s->twr_r = s->r.out.towers[0].twr;
871 if (s->twr_r == NULL) {
872 composite_error(c, NT_STATUS_PORT_UNREACHABLE);
876 if (s->twr_r->tower.num_floors != s->twr.tower.num_floors ||
877 s->twr_r->tower.floors[3].lhs.protocol != s->twr.tower.floors[3].lhs.protocol) {
878 composite_error(c, NT_STATUS_PORT_UNREACHABLE);
882 /* get received endpoint */
883 s->binding->endpoint = talloc_reference(s->binding,
884 dcerpc_floor_get_rhs_data(c, &s->twr_r->tower.floors[3]));
885 if (composite_nomem(s->binding->endpoint, c)) return;
892 Request for endpoint mapping of dcerpc binding - try to request for endpoint
893 unless there is default one.
895 struct composite_context *dcerpc_epm_map_binding_send(TALLOC_CTX *mem_ctx,
896 struct dcerpc_binding *binding,
897 const struct ndr_interface_table *table,
898 struct event_context *ev,
899 struct loadparm_context *lp_ctx)
901 struct composite_context *c;
902 struct epm_map_binding_state *s;
903 struct composite_context *pipe_connect_req;
904 struct cli_credentials *anon_creds;
905 struct event_context *new_ev = NULL;
908 struct dcerpc_binding *epmapper_binding;
911 /* Try to find event context in memory context in case passed
912 * event_context (argument) was NULL. If there's none, just
916 ev = event_context_find(mem_ctx);
918 new_ev = event_context_init(mem_ctx);
919 if (new_ev == NULL) return NULL;
924 /* composite context allocation and setup */
925 c = composite_create(mem_ctx, ev);
930 talloc_steal(c, new_ev);
932 s = talloc_zero(c, struct epm_map_binding_state);
933 if (composite_nomem(s, c)) return c;
936 s->binding = binding;
939 /* anonymous credentials for rpc connection used to get endpoint mapping */
940 anon_creds = cli_credentials_init(mem_ctx);
941 cli_credentials_set_event_context(anon_creds, ev);
942 cli_credentials_set_anonymous(anon_creds);
945 First, check if there is a default endpoint specified in the IDL
948 struct dcerpc_binding *default_binding;
950 /* Find one of the default pipes for this interface */
951 for (i = 0; i < table->endpoints->count; i++) {
952 status = dcerpc_parse_binding(mem_ctx, table->endpoints->names[i], &default_binding);
954 if (NT_STATUS_IS_OK(status)) {
955 if (binding->transport == NCA_UNKNOWN)
956 binding->transport = default_binding->transport;
957 if (default_binding->transport == binding->transport &&
958 default_binding->endpoint) {
959 binding->endpoint = talloc_reference(binding, default_binding->endpoint);
960 talloc_free(default_binding);
966 talloc_free(default_binding);
972 epmapper_binding = talloc_zero(c, struct dcerpc_binding);
973 if (composite_nomem(epmapper_binding, c)) return c;
975 /* basic endpoint mapping data */
976 epmapper_binding->transport = binding->transport;
977 epmapper_binding->host = talloc_reference(epmapper_binding, binding->host);
978 epmapper_binding->target_hostname = epmapper_binding->host;
979 epmapper_binding->options = NULL;
980 epmapper_binding->flags = 0;
981 epmapper_binding->assoc_group_id = 0;
982 epmapper_binding->endpoint = NULL;
984 /* initiate rpc pipe connection */
985 pipe_connect_req = dcerpc_pipe_connect_b_send(c, epmapper_binding,
987 anon_creds, c->event_ctx,
989 if (composite_nomem(pipe_connect_req, c)) return c;
991 composite_continue(c, pipe_connect_req, continue_epm_recv_binding, c);
997 Receive result of endpoint mapping request
999 NTSTATUS dcerpc_epm_map_binding_recv(struct composite_context *c)
1001 NTSTATUS status = composite_wait(c);
1009 Get endpoint mapping for rpc connection
1011 NTSTATUS dcerpc_epm_map_binding(TALLOC_CTX *mem_ctx, struct dcerpc_binding *binding,
1012 const struct ndr_interface_table *table, struct event_context *ev,
1013 struct loadparm_context *lp_ctx)
1015 struct composite_context *c;
1017 c = dcerpc_epm_map_binding_send(mem_ctx, binding, table, ev, lp_ctx);
1018 return dcerpc_epm_map_binding_recv(c);
1022 struct pipe_auth_state {
1023 struct dcerpc_pipe *pipe;
1024 struct dcerpc_binding *binding;
1025 const struct ndr_interface_table *table;
1026 struct loadparm_context *lp_ctx;
1027 struct cli_credentials *credentials;
1031 static void continue_auth_schannel(struct composite_context *ctx);
1032 static void continue_auth(struct composite_context *ctx);
1033 static void continue_auth_none(struct composite_context *ctx);
1034 static void continue_ntlmssp_connection(struct composite_context *ctx);
1035 static void continue_spnego_after_wrong_pass(struct composite_context *ctx);
1039 Stage 2 of pipe_auth: Receive result of schannel bind request
1041 static void continue_auth_schannel(struct composite_context *ctx)
1043 struct composite_context *c = talloc_get_type(ctx->async.private_data,
1044 struct composite_context);
1046 c->status = dcerpc_bind_auth_schannel_recv(ctx);
1047 if (!composite_is_ok(c)) return;
1054 Stage 2 of pipe_auth: Receive result of authenticated bind request
1056 static void continue_auth(struct composite_context *ctx)
1058 struct composite_context *c = talloc_get_type(ctx->async.private_data,
1059 struct composite_context);
1061 c->status = dcerpc_bind_auth_recv(ctx);
1062 if (!composite_is_ok(c)) return;
1067 Stage 2 of pipe_auth: Receive result of authenticated bind request, but handle fallbacks:
1070 static void continue_auth_auto(struct composite_context *ctx)
1072 struct composite_context *c = talloc_get_type(ctx->async.private_data,
1073 struct composite_context);
1074 struct pipe_auth_state *s = talloc_get_type(c->private_data, struct pipe_auth_state);
1075 struct composite_context *sec_conn_req;
1077 c->status = dcerpc_bind_auth_recv(ctx);
1078 if (NT_STATUS_EQUAL(c->status, NT_STATUS_INVALID_PARAMETER)) {
1080 * Retry with NTLMSSP auth as fallback
1081 * send a request for secondary rpc connection
1083 sec_conn_req = dcerpc_secondary_connection_send(s->pipe,
1085 composite_continue(c, sec_conn_req, continue_ntlmssp_connection, c);
1087 } else if (NT_STATUS_EQUAL(c->status, NT_STATUS_LOGON_FAILURE)) {
1088 if (cli_credentials_wrong_password(s->credentials)) {
1090 * Retry SPNEGO with a better password
1091 * send a request for secondary rpc connection
1093 sec_conn_req = dcerpc_secondary_connection_send(s->pipe,
1095 composite_continue(c, sec_conn_req, continue_spnego_after_wrong_pass, c);
1100 if (!composite_is_ok(c)) return;
1106 Stage 3 of pipe_auth (fallback to NTLMSSP case): Receive secondary
1107 rpc connection (the first one can't be used any more, due to the
1108 bind nak) and perform authenticated bind request
1110 static void continue_ntlmssp_connection(struct composite_context *ctx)
1112 struct composite_context *c;
1113 struct pipe_auth_state *s;
1114 struct composite_context *auth_req;
1115 struct dcerpc_pipe *p2;
1117 c = talloc_get_type(ctx->async.private_data, struct composite_context);
1118 s = talloc_get_type(c->private_data, struct pipe_auth_state);
1120 /* receive secondary rpc connection */
1121 c->status = dcerpc_secondary_connection_recv(ctx, &p2);
1122 if (!composite_is_ok(c)) return;
1124 talloc_steal(s, p2);
1125 talloc_steal(p2, s->pipe);
1128 /* initiate a authenticated bind */
1129 auth_req = dcerpc_bind_auth_send(c, s->pipe, s->table,
1130 s->credentials, s->lp_ctx,
1131 DCERPC_AUTH_TYPE_NTLMSSP,
1132 dcerpc_auth_level(s->pipe->conn),
1133 s->table->authservices->names[0]);
1134 composite_continue(c, auth_req, continue_auth, c);
1138 Stage 3 of pipe_auth (retry on wrong password): Receive secondary
1139 rpc connection (the first one can't be used any more, due to the
1140 bind nak) and perform authenticated bind request
1142 static void continue_spnego_after_wrong_pass(struct composite_context *ctx)
1144 struct composite_context *c;
1145 struct pipe_auth_state *s;
1146 struct composite_context *auth_req;
1147 struct dcerpc_pipe *p2;
1149 c = talloc_get_type(ctx->async.private_data, struct composite_context);
1150 s = talloc_get_type(c->private_data, struct pipe_auth_state);
1152 /* receive secondary rpc connection */
1153 c->status = dcerpc_secondary_connection_recv(ctx, &p2);
1154 if (!composite_is_ok(c)) return;
1156 talloc_steal(s, p2);
1157 talloc_steal(p2, s->pipe);
1160 /* initiate a authenticated bind */
1161 auth_req = dcerpc_bind_auth_send(c, s->pipe, s->table,
1162 s->credentials, s->lp_ctx, DCERPC_AUTH_TYPE_SPNEGO,
1163 dcerpc_auth_level(s->pipe->conn),
1164 s->table->authservices->names[0]);
1165 composite_continue(c, auth_req, continue_auth, c);
1170 Stage 2 of pipe_auth: Receive result of non-authenticated bind request
1172 static void continue_auth_none(struct composite_context *ctx)
1174 struct composite_context *c = talloc_get_type(ctx->async.private_data,
1175 struct composite_context);
1177 c->status = dcerpc_bind_auth_none_recv(ctx);
1178 if (!composite_is_ok(c)) return;
1185 Request to perform an authenticated bind if required. Authentication
1186 is determined using credentials passed and binding flags.
1188 struct composite_context *dcerpc_pipe_auth_send(struct dcerpc_pipe *p,
1189 struct dcerpc_binding *binding,
1190 const struct ndr_interface_table *table,
1191 struct cli_credentials *credentials,
1192 struct loadparm_context *lp_ctx)
1194 struct composite_context *c;
1195 struct pipe_auth_state *s;
1196 struct composite_context *auth_schannel_req;
1197 struct composite_context *auth_req;
1198 struct composite_context *auth_none_req;
1199 struct dcerpc_connection *conn;
1202 /* composite context allocation and setup */
1203 c = composite_create(p, p->conn->event_ctx);
1204 if (c == NULL) return NULL;
1206 s = talloc_zero(c, struct pipe_auth_state);
1207 if (composite_nomem(s, c)) return c;
1208 c->private_data = s;
1210 /* store parameters in state structure */
1211 s->binding = binding;
1213 s->credentials = credentials;
1217 conn = s->pipe->conn;
1218 conn->flags = binding->flags;
1220 /* remember the binding string for possible secondary connections */
1221 conn->binding_string = dcerpc_binding_string(p, binding);
1223 if (cli_credentials_is_anonymous(s->credentials)) {
1224 auth_none_req = dcerpc_bind_auth_none_send(c, s->pipe, s->table);
1225 composite_continue(c, auth_none_req, continue_auth_none, c);
1229 if ((binding->flags & DCERPC_SCHANNEL) &&
1230 !cli_credentials_get_netlogon_creds(s->credentials)) {
1231 /* If we don't already have netlogon credentials for
1232 * the schannel bind, then we have to get these
1234 auth_schannel_req = dcerpc_bind_auth_schannel_send(c, s->pipe, s->table,
1235 s->credentials, s->lp_ctx,
1236 dcerpc_auth_level(conn));
1237 composite_continue(c, auth_schannel_req, continue_auth_schannel, c);
1242 * we rely on the already authenticated CIFS connection
1243 * if not doing sign or seal
1245 if (conn->transport.transport == NCACN_NP &&
1246 !(s->binding->flags & (DCERPC_SIGN|DCERPC_SEAL))) {
1247 auth_none_req = dcerpc_bind_auth_none_send(c, s->pipe, s->table);
1248 composite_continue(c, auth_none_req, continue_auth_none, c);
1253 /* Perform an authenticated DCE-RPC bind
1255 if (!(conn->flags & (DCERPC_SIGN|DCERPC_SEAL))) {
1257 we are doing an authenticated connection,
1258 but not using sign or seal. We must force
1259 the CONNECT dcerpc auth type as a NONE auth
1260 type doesn't allow authentication
1261 information to be passed.
1263 conn->flags |= DCERPC_CONNECT;
1266 if (s->binding->flags & DCERPC_AUTH_SPNEGO) {
1267 auth_type = DCERPC_AUTH_TYPE_SPNEGO;
1269 } else if (s->binding->flags & DCERPC_AUTH_KRB5) {
1270 auth_type = DCERPC_AUTH_TYPE_KRB5;
1272 } else if (s->binding->flags & DCERPC_SCHANNEL) {
1273 auth_type = DCERPC_AUTH_TYPE_SCHANNEL;
1275 } else if (s->binding->flags & DCERPC_AUTH_NTLM) {
1276 auth_type = DCERPC_AUTH_TYPE_NTLMSSP;
1279 /* try SPNEGO with fallback to NTLMSSP */
1280 auth_req = dcerpc_bind_auth_send(c, s->pipe, s->table,
1281 s->credentials, s->lp_ctx, DCERPC_AUTH_TYPE_SPNEGO,
1282 dcerpc_auth_level(conn),
1283 s->table->authservices->names[0]);
1284 composite_continue(c, auth_req, continue_auth_auto, c);
1288 auth_req = dcerpc_bind_auth_send(c, s->pipe, s->table,
1289 s->credentials, s->lp_ctx, auth_type,
1290 dcerpc_auth_level(conn),
1291 s->table->authservices->names[0]);
1292 composite_continue(c, auth_req, continue_auth, c);
1298 Receive result of authenticated bind request on dcerpc pipe
1300 This returns *p, which may be different to the one originally
1301 supllied, as it rebinds to a new pipe due to authentication fallback
1304 NTSTATUS dcerpc_pipe_auth_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
1305 struct dcerpc_pipe **p)
1309 struct pipe_auth_state *s = talloc_get_type(c->private_data,
1310 struct pipe_auth_state);
1311 status = composite_wait(c);
1312 if (!NT_STATUS_IS_OK(status)) {
1313 char *uuid_str = GUID_string(s->pipe, &s->table->syntax_id.uuid);
1314 DEBUG(0, ("Failed to bind to uuid %s - %s\n", uuid_str, nt_errstr(status)));
1315 talloc_free(uuid_str);
1317 talloc_steal(mem_ctx, s->pipe);
1327 Perform an authenticated bind if needed - sync version
1329 This may change *p, as it rebinds to a new pipe due to authentication fallback
1331 NTSTATUS dcerpc_pipe_auth(TALLOC_CTX *mem_ctx,
1332 struct dcerpc_pipe **p,
1333 struct dcerpc_binding *binding,
1334 const struct ndr_interface_table *table,
1335 struct cli_credentials *credentials,
1336 struct loadparm_context *lp_ctx)
1338 struct composite_context *c;
1340 c = dcerpc_pipe_auth_send(*p, binding, table, credentials, lp_ctx);
1341 return dcerpc_pipe_auth_recv(c, mem_ctx, p);
1345 NTSTATUS dcerpc_generic_session_key(struct dcerpc_connection *c,
1346 DATA_BLOB *session_key)
1348 /* this took quite a few CPU cycles to find ... */
1349 session_key->data = discard_const_p(unsigned char, "SystemLibraryDTC");
1350 session_key->length = 16;
1351 return NT_STATUS_OK;
1355 fetch the user session key - may be default (above) or the SMB session key
1357 NTSTATUS dcerpc_fetch_session_key(struct dcerpc_pipe *p,
1358 DATA_BLOB *session_key)
1360 return p->conn->security_state.session_key(p->conn, session_key);
1365 log a rpc packet in a format suitable for ndrdump. This is especially useful
1366 for sealed packets, where ethereal cannot easily see the contents
1368 this triggers on a debug level of >= 10
1370 void dcerpc_log_packet(const struct ndr_interface_table *ndr,
1371 uint32_t opnum, uint32_t flags,
1374 const int num_examples = 20;
1377 if (DEBUGLEVEL < 10) return;
1379 for (i=0;i<num_examples;i++) {
1381 asprintf(&name, "%s/rpclog/%s-%u.%d.%s",
1382 lp_lockdir(global_loadparm), ndr->name, opnum, i,
1383 (flags&NDR_IN)?"in":"out");
1387 if (!file_exist(name)) {
1388 if (file_save(name, pkt->data, pkt->length)) {
1389 DEBUG(10,("Logged rpc packet to %s\n", name));
1401 create a secondary context from a primary connection
1403 this uses dcerpc_alter_context() to create a new dcerpc context_id
1405 NTSTATUS dcerpc_secondary_context(struct dcerpc_pipe *p,
1406 struct dcerpc_pipe **pp2,
1407 const struct ndr_interface_table *table)
1410 struct dcerpc_pipe *p2;
1412 p2 = talloc_zero(p, struct dcerpc_pipe);
1414 return NT_STATUS_NO_MEMORY;
1416 p2->conn = talloc_reference(p2, p->conn);
1417 p2->request_timeout = p->request_timeout;
1419 p2->context_id = ++p->conn->next_context_id;
1421 p2->syntax = table->syntax_id;
1423 p2->transfer_syntax = ndr_transfer_syntax;
1425 p2->binding = talloc_reference(p2, p->binding);
1427 status = dcerpc_alter_context(p2, p2, &p2->syntax, &p2->transfer_syntax);
1428 if (!NT_STATUS_IS_OK(status)) {
1435 return NT_STATUS_OK;