--- /dev/null
+/*
+ Unix SMB/CIFS implementation.
+
+ dcerpc utility functions
+
+ Copyright (C) Andrew Tridgell 2003
+ Copyright (C) Jelmer Vernooij 2004
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
+ Copyright (C) Rafal Szczesniak 2006
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+
+#define MAX_PROTSEQ 10
+
+static const struct {
+ const char *name;
+ enum dcerpc_transport_t transport;
+ int num_protocols;
+ enum epm_protocol protseq[MAX_PROTSEQ];
+} transports[] = {
+ { "ncacn_np", NCACN_NP, 3,
+ { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_SMB, EPM_PROTOCOL_NETBIOS }},
+ { "ncacn_ip_tcp", NCACN_IP_TCP, 3,
+ { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_TCP, EPM_PROTOCOL_IP } },
+ { "ncacn_http", NCACN_HTTP, 3,
+ { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_HTTP, EPM_PROTOCOL_IP } },
+ { "ncadg_ip_udp", NCACN_IP_UDP, 3,
+ { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_UDP, EPM_PROTOCOL_IP } },
+ { "ncalrpc", NCALRPC, 2,
+ { EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_PIPE } },
+ { "ncacn_unix_stream", NCACN_UNIX_STREAM, 2,
+ { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_UNIX_DS } },
+ { "ncadg_unix_dgram", NCADG_UNIX_DGRAM, 2,
+ { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_UNIX_DS } },
+ { "ncacn_at_dsp", NCACN_AT_DSP, 3,
+ { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_APPLETALK, EPM_PROTOCOL_DSP } },
+ { "ncadg_at_ddp", NCADG_AT_DDP, 3,
+ { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_APPLETALK, EPM_PROTOCOL_DDP } },
+ { "ncacn_vns_ssp", NCACN_VNS_SPP, 3,
+ { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_STREETTALK, EPM_PROTOCOL_VINES_SPP } },
+ { "ncacn_vns_ipc", NCACN_VNS_IPC, 3,
+ { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_STREETTALK, EPM_PROTOCOL_VINES_IPC }, },
+ { "ncadg_ipx", NCADG_IPX, 2,
+ { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_IPX },
+ },
+ { "ncacn_spx", NCACN_SPX, 3,
+ /* I guess some MS programmer confused the identifier for
+ * EPM_PROTOCOL_UUID (0x0D or 13) with the one for
+ * EPM_PROTOCOL_SPX (0x13) here. -- jelmer*/
+ { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_UUID },
+ },
+};
+
+static const struct {
+ const char *name;
+ uint32_t flag;
+} ncacn_options[] = {
+};
+
+const char *epm_floor_string(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor)
+{
+ struct ndr_syntax_id syntax;
+ NTSTATUS status;
+
+ switch(epm_floor->lhs.protocol) {
+ case EPM_PROTOCOL_UUID:
+ status = dcerpc_floor_get_lhs_data(epm_floor, &syntax);
+ if (NT_STATUS_IS_OK(status)) {
+ /* lhs is used: UUID */
+ char *uuidstr;
+
+ if (GUID_equal(&syntax.uuid, &ndr_transfer_syntax.uuid)) {
+ return "NDR";
+ }
+
+ if (GUID_equal(&syntax.uuid, &ndr64_transfer_syntax.uuid)) {
+ return "NDR64";
+ }
+
+ uuidstr = GUID_string(mem_ctx, &syntax.uuid);
+
+ return talloc_asprintf(mem_ctx, " uuid %s/0x%02x", uuidstr, syntax.if_version);
+ } else { /* IPX */
+ return NULL;
+ }
+
+ case EPM_PROTOCOL_NCACN:
+ return "RPC-C";
+
+ case EPM_PROTOCOL_NCADG:
+ return "RPC";
+
+ case EPM_PROTOCOL_NCALRPC:
+ return "NCALRPC";
+
+ case EPM_PROTOCOL_DNET_NSP:
+ return "DNET/NSP";
+
+ case EPM_PROTOCOL_IP:
+ return talloc_asprintf(mem_ctx, "IP:%s", epm_floor->rhs.ip.ipaddr);
+
+ case EPM_PROTOCOL_PIPE:
+ return talloc_asprintf(mem_ctx, "PIPE:%s", epm_floor->rhs.pipe.path);
+
+ case EPM_PROTOCOL_SMB:
+ return talloc_asprintf(mem_ctx, "SMB:%s", epm_floor->rhs.smb.unc);
+
+ case EPM_PROTOCOL_UNIX_DS:
+ return talloc_asprintf(mem_ctx, "Unix:%s", epm_floor->rhs.unix_ds.path);
+
+ case EPM_PROTOCOL_NETBIOS:
+ return talloc_asprintf(mem_ctx, "NetBIOS:%s", epm_floor->rhs.netbios.name);
+
+ case EPM_PROTOCOL_NETBEUI:
+ return "NETBeui";
+
+ case EPM_PROTOCOL_SPX:
+ return "SPX";
+
+ case EPM_PROTOCOL_NB_IPX:
+ return "NB_IPX";
+
+ case EPM_PROTOCOL_HTTP:
+ return talloc_asprintf(mem_ctx, "HTTP:%d", epm_floor->rhs.http.port);
+
+ case EPM_PROTOCOL_TCP:
+ return talloc_asprintf(mem_ctx, "TCP:%d", epm_floor->rhs.tcp.port);
+
+ case EPM_PROTOCOL_UDP:
+ return talloc_asprintf(mem_ctx, "UDP:%d", epm_floor->rhs.udp.port);
+
+ default:
+ return talloc_asprintf(mem_ctx, "UNK(%02x):", epm_floor->lhs.protocol);
+ }
+}
+
+
+/*
+ form a binding string from a binding structure
+*/
+_PUBLIC_ char *dcerpc_binding_string(TALLOC_CTX *mem_ctx, const struct dcerpc_binding *b)
+{
+ char *s = talloc_strdup(mem_ctx, "");
+ int i;
+ const char *t_name = NULL;
+
+ if (b->transport != NCA_UNKNOWN) {
+ for (i=0;i<ARRAY_SIZE(transports);i++) {
+ if (transports[i].transport == b->transport) {
+ t_name = transports[i].name;
+ }
+ }
+ if (!t_name) {
+ return NULL;
+ }
+ }
+
+ if (!GUID_all_zero(&b->object.uuid)) {
+ s = talloc_asprintf(s, "%s@",
+ GUID_string(mem_ctx, &b->object.uuid));
+ }
+
+ if (t_name != NULL) {
+ s = talloc_asprintf_append_buffer(s, "%s:", t_name);
+ if (s == NULL) {
+ return NULL;
+ }
+ }
+
+ if (b->host) {
+ s = talloc_asprintf_append_buffer(s, "%s", b->host);
+ }
+
+ if (!b->endpoint && !b->options && !b->flags) {
+ return s;
+ }
+
+ s = talloc_asprintf_append_buffer(s, "[");
+
+ if (b->endpoint) {
+ s = talloc_asprintf_append_buffer(s, "%s", b->endpoint);
+ }
+
+ /* this is a *really* inefficent way of dealing with strings,
+ but this is rarely called and the strings are always short,
+ so I don't care */
+ for (i=0;b->options && b->options[i];i++) {
+ s = talloc_asprintf_append_buffer(s, ",%s", b->options[i]);
+ if (!s) return NULL;
+ }
+
+ for (i=0;i<ARRAY_SIZE(ncacn_options);i++) {
+ if (b->flags & ncacn_options[i].flag) {
+ s = talloc_asprintf_append_buffer(s, ",%s", ncacn_options[i].name);
+ if (!s) return NULL;
+ }
+ }
+
+ s = talloc_asprintf_append_buffer(s, "]");
+
+ return s;
+}
+
+/*
+ parse a binding string into a dcerpc_binding structure
+*/
+_PUBLIC_ NTSTATUS dcerpc_parse_binding(TALLOC_CTX *mem_ctx, const char *s, struct dcerpc_binding **b_out)
+{
+ struct dcerpc_binding *b;
+ char *options;
+ char *p;
+ int i, j, comma_count;
+
+ b = talloc(mem_ctx, struct dcerpc_binding);
+ if (!b) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ p = strchr(s, '@');
+
+ if (p && PTR_DIFF(p, s) == 36) { /* 36 is the length of a UUID */
+ NTSTATUS status;
+
+ status = GUID_from_string(s, &b->object.uuid);
+
+ if (NT_STATUS_IS_ERR(status)) {
+ DEBUG(0, ("Failed parsing UUID\n"));
+ return status;
+ }
+
+ s = p + 1;
+ } else {
+ ZERO_STRUCT(b->object);
+ }
+
+ b->object.if_version = 0;
+
+ p = strchr(s, ':');
+
+ if (p == NULL) {
+ b->transport = NCA_UNKNOWN;
+ } else {
+ char *type = talloc_strndup(mem_ctx, s, PTR_DIFF(p, s));
+ if (!type) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ for (i=0;i<ARRAY_SIZE(transports);i++) {
+ if (strcmp(type, transports[i].name) == 0) {
+ b->transport = transports[i].transport;
+ break;
+ }
+ }
+
+ if (i==ARRAY_SIZE(transports)) {
+ DEBUG(0,("Unknown dcerpc transport '%s'\n", type));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ talloc_free(type);
+
+ s = p+1;
+ }
+
+ p = strchr(s, '[');
+ if (p) {
+ b->host = talloc_strndup(b, s, PTR_DIFF(p, s));
+ options = talloc_strdup(mem_ctx, p+1);
+ if (options[strlen(options)-1] != ']') {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ options[strlen(options)-1] = 0;
+ } else {
+ b->host = talloc_strdup(b, s);
+ options = NULL;
+ }
+ if (!b->host) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ b->target_hostname = b->host;
+
+ b->options = NULL;
+ b->flags = 0;
+ b->assoc_group_id = 0;
+ b->endpoint = NULL;
+
+ if (!options) {
+ *b_out = b;
+ return NT_STATUS_OK;
+ }
+
+ comma_count = count_chars(options, ',');
+
+ b->options = talloc_array(b, const char *, comma_count+2);
+ if (!b->options) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ for (i=0; (p = strchr(options, ',')); i++) {
+ b->options[i] = talloc_strndup(b, options, PTR_DIFF(p, options));
+ if (!b->options[i]) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ options = p+1;
+ }
+ b->options[i] = options;
+ b->options[i+1] = NULL;
+
+ /* some options are pre-parsed for convenience */
+ for (i=0;b->options[i];i++) {
+ for (j=0;j<ARRAY_SIZE(ncacn_options);j++) {
+ if (strcmp(ncacn_options[j].name, b->options[i]) == 0) {
+ int k;
+ b->flags |= ncacn_options[j].flag;
+ for (k=i;b->options[k];k++) {
+ b->options[k] = b->options[k+1];
+ }
+ i--;
+ break;
+ }
+ }
+ }
+
+ if (b->options[0]) {
+ /* Endpoint is first option */
+ b->endpoint = b->options[0];
+ if (strlen(b->endpoint) == 0) b->endpoint = NULL;
+
+ for (i=0;b->options[i];i++) {
+ b->options[i] = b->options[i+1];
+ }
+ }
+
+ if (b->options[0] == NULL)
+ b->options = NULL;
+
+ *b_out = b;
+ return NT_STATUS_OK;
+}
+
+_PUBLIC_ NTSTATUS dcerpc_floor_get_lhs_data(struct epm_floor *epm_floor, struct ndr_syntax_id *syntax)
+{
+ TALLOC_CTX *mem_ctx = talloc_init("floor_get_lhs_data");
+ struct ndr_pull *ndr = ndr_pull_init_blob(&epm_floor->lhs.lhs_data, mem_ctx);
+ enum ndr_err_code ndr_err;
+ uint16_t if_version=0;
+
+ ndr->flags |= LIBNDR_FLAG_NOALIGN;
+
+ ndr_err = ndr_pull_GUID(ndr, NDR_SCALARS | NDR_BUFFERS, &syntax->uuid);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ talloc_free(mem_ctx);
+ return ndr_map_error2ntstatus(ndr_err);
+ }
+
+ ndr_err = ndr_pull_uint16(ndr, NDR_SCALARS, &if_version);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ talloc_free(mem_ctx);
+ return ndr_map_error2ntstatus(ndr_err);
+ }
+
+ syntax->if_version = if_version;
+
+ talloc_free(mem_ctx);
+
+ return NT_STATUS_OK;
+}
+
+static DATA_BLOB dcerpc_floor_pack_lhs_data(TALLOC_CTX *mem_ctx, const struct ndr_syntax_id *syntax)
+{
+ struct ndr_push *ndr = ndr_push_init_ctx(mem_ctx);
+
+ ndr->flags |= LIBNDR_FLAG_NOALIGN;
+
+ ndr_push_GUID(ndr, NDR_SCALARS | NDR_BUFFERS, &syntax->uuid);
+ ndr_push_uint16(ndr, NDR_SCALARS, syntax->if_version);
+
+ return ndr_push_blob(ndr);
+}
+
+const char *dcerpc_floor_get_rhs_data(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor)
+{
+ switch (epm_floor->lhs.protocol) {
+ case EPM_PROTOCOL_TCP:
+ if (epm_floor->rhs.tcp.port == 0) return NULL;
+ return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.tcp.port);
+
+ case EPM_PROTOCOL_UDP:
+ if (epm_floor->rhs.udp.port == 0) return NULL;
+ return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.udp.port);
+
+ case EPM_PROTOCOL_HTTP:
+ if (epm_floor->rhs.http.port == 0) return NULL;
+ return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.http.port);
+
+ case EPM_PROTOCOL_IP:
+ return talloc_strdup(mem_ctx, epm_floor->rhs.ip.ipaddr);
+
+ case EPM_PROTOCOL_NCACN:
+ return NULL;
+
+ case EPM_PROTOCOL_NCADG:
+ return NULL;
+
+ case EPM_PROTOCOL_SMB:
+ if (strlen(epm_floor->rhs.smb.unc) == 0) return NULL;
+ return talloc_strdup(mem_ctx, epm_floor->rhs.smb.unc);
+
+ case EPM_PROTOCOL_PIPE:
+ if (strlen(epm_floor->rhs.pipe.path) == 0) return NULL;
+ return talloc_strdup(mem_ctx, epm_floor->rhs.pipe.path);
+
+ case EPM_PROTOCOL_NETBIOS:
+ if (strlen(epm_floor->rhs.netbios.name) == 0) return NULL;
+ return talloc_strdup(mem_ctx, epm_floor->rhs.netbios.name);
+
+ case EPM_PROTOCOL_NCALRPC:
+ return NULL;
+
+ case EPM_PROTOCOL_VINES_SPP:
+ return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.vines_spp.port);
+
+ case EPM_PROTOCOL_VINES_IPC:
+ return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.vines_ipc.port);
+
+ case EPM_PROTOCOL_STREETTALK:
+ return talloc_strdup(mem_ctx, epm_floor->rhs.streettalk.streettalk);
+
+ case EPM_PROTOCOL_UNIX_DS:
+ if (strlen(epm_floor->rhs.unix_ds.path) == 0) return NULL;
+ return talloc_strdup(mem_ctx, epm_floor->rhs.unix_ds.path);
+
+ case EPM_PROTOCOL_NULL:
+ return NULL;
+
+ default:
+ DEBUG(0,("Unsupported lhs protocol %d\n", epm_floor->lhs.protocol));
+ break;
+ }
+
+ return NULL;
+}
+
+static NTSTATUS dcerpc_floor_set_rhs_data(TALLOC_CTX *mem_ctx,
+ struct epm_floor *epm_floor,
+ const char *data)
+{
+ switch (epm_floor->lhs.protocol) {
+ case EPM_PROTOCOL_TCP:
+ epm_floor->rhs.tcp.port = atoi(data);
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_UDP:
+ epm_floor->rhs.udp.port = atoi(data);
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_HTTP:
+ epm_floor->rhs.http.port = atoi(data);
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_IP:
+ epm_floor->rhs.ip.ipaddr = talloc_strdup(mem_ctx, data);
+ NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.ip.ipaddr);
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_NCACN:
+ epm_floor->rhs.ncacn.minor_version = 0;
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_NCADG:
+ epm_floor->rhs.ncadg.minor_version = 0;
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_SMB:
+ epm_floor->rhs.smb.unc = talloc_strdup(mem_ctx, data);
+ NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.smb.unc);
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_PIPE:
+ epm_floor->rhs.pipe.path = talloc_strdup(mem_ctx, data);
+ NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.pipe.path);
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_NETBIOS:
+ epm_floor->rhs.netbios.name = talloc_strdup(mem_ctx, data);
+ NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.netbios.name);
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_NCALRPC:
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_VINES_SPP:
+ epm_floor->rhs.vines_spp.port = atoi(data);
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_VINES_IPC:
+ epm_floor->rhs.vines_ipc.port = atoi(data);
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_STREETTALK:
+ epm_floor->rhs.streettalk.streettalk = talloc_strdup(mem_ctx, data);
+ NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.streettalk.streettalk);
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_UNIX_DS:
+ epm_floor->rhs.unix_ds.path = talloc_strdup(mem_ctx, data);
+ NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.unix_ds.path);
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_NULL:
+ return NT_STATUS_OK;
+
+ default:
+ DEBUG(0,("Unsupported lhs protocol %d\n", epm_floor->lhs.protocol));
+ break;
+ }
+
+ return NT_STATUS_NOT_SUPPORTED;
+}
+
+enum dcerpc_transport_t dcerpc_transport_by_endpoint_protocol(int prot)
+{
+ int i;
+
+ /* Find a transport that has 'prot' as 4th protocol */
+ for (i=0;i<ARRAY_SIZE(transports);i++) {
+ if (transports[i].num_protocols >= 2 &&
+ transports[i].protseq[1] == prot) {
+ return transports[i].transport;
+ }
+ }
+
+ /* Unknown transport */
+ return (unsigned int)-1;
+}
+
+_PUBLIC_ enum dcerpc_transport_t dcerpc_transport_by_tower(struct epm_tower *tower)
+{
+ int i;
+
+ /* Find a transport that matches this tower */
+ for (i=0;i<ARRAY_SIZE(transports);i++) {
+ int j;
+ if (transports[i].num_protocols != tower->num_floors - 2) {
+ continue;
+ }
+
+ for (j = 0; j < transports[i].num_protocols; j++) {
+ if (transports[i].protseq[j] != tower->floors[j+2].lhs.protocol) {
+ break;
+ }
+ }
+
+ if (j == transports[i].num_protocols) {
+ return transports[i].transport;
+ }
+ }
+
+ /* Unknown transport */
+ return (unsigned int)-1;
+}
+
+_PUBLIC_ NTSTATUS dcerpc_binding_from_tower(TALLOC_CTX *mem_ctx,
+ struct epm_tower *tower,
+ struct dcerpc_binding **b_out)
+{
+ NTSTATUS status;
+ struct dcerpc_binding *binding;
+
+ binding = talloc(mem_ctx, struct dcerpc_binding);
+ NT_STATUS_HAVE_NO_MEMORY(binding);
+
+ ZERO_STRUCT(binding->object);
+ binding->options = NULL;
+ binding->host = NULL;
+ binding->target_hostname = NULL;
+ binding->flags = 0;
+ binding->assoc_group_id = 0;
+
+ binding->transport = dcerpc_transport_by_tower(tower);
+
+ if (binding->transport == (unsigned int)-1) {
+ return NT_STATUS_NOT_SUPPORTED;
+ }
+
+ if (tower->num_floors < 1) {
+ return NT_STATUS_OK;
+ }
+
+ /* Set object uuid */
+ status = dcerpc_floor_get_lhs_data(&tower->floors[0], &binding->object);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("Error pulling object uuid and version: %s", nt_errstr(status)));
+ return status;
+ }
+
+ /* Ignore floor 1, it contains the NDR version info */
+
+ binding->options = NULL;
+
+ /* Set endpoint */
+ if (tower->num_floors >= 4) {
+ binding->endpoint = dcerpc_floor_get_rhs_data(mem_ctx, &tower->floors[3]);
+ } else {
+ binding->endpoint = NULL;
+ }
+
+ /* Set network address */
+ if (tower->num_floors >= 5) {
+ binding->host = dcerpc_floor_get_rhs_data(mem_ctx, &tower->floors[4]);
+ NT_STATUS_HAVE_NO_MEMORY(binding->host);
+ binding->target_hostname = binding->host;
+ }
+ *b_out = binding;
+ return NT_STATUS_OK;
+}
+
+_PUBLIC_ NTSTATUS dcerpc_binding_build_tower(TALLOC_CTX *mem_ctx, struct dcerpc_binding *binding, struct epm_tower *tower)
+{
+ const enum epm_protocol *protseq = NULL;
+ int num_protocols = -1, i;
+ NTSTATUS status;
+
+ /* Find transport */
+ for (i=0;i<ARRAY_SIZE(transports);i++) {
+ if (transports[i].transport == binding->transport) {
+ protseq = transports[i].protseq;
+ num_protocols = transports[i].num_protocols;
+ break;
+ }
+ }
+
+ if (num_protocols == -1) {
+ DEBUG(0, ("Unable to find transport with id '%d'\n", binding->transport));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ tower->num_floors = 2 + num_protocols;
+ tower->floors = talloc_array(mem_ctx, struct epm_floor, tower->num_floors);
+
+ /* Floor 0 */
+ tower->floors[0].lhs.protocol = EPM_PROTOCOL_UUID;
+
+ tower->floors[0].lhs.lhs_data = dcerpc_floor_pack_lhs_data(mem_ctx, &binding->object);
+
+ tower->floors[0].rhs.uuid.unknown = data_blob_talloc_zero(mem_ctx, 2);
+
+ /* Floor 1 */
+ tower->floors[1].lhs.protocol = EPM_PROTOCOL_UUID;
+
+ tower->floors[1].lhs.lhs_data = dcerpc_floor_pack_lhs_data(mem_ctx,
+ &ndr_transfer_syntax);
+
+ tower->floors[1].rhs.uuid.unknown = data_blob_talloc_zero(mem_ctx, 2);
+
+ /* Floor 2 to num_protocols */
+ for (i = 0; i < num_protocols; i++) {
+ tower->floors[2 + i].lhs.protocol = protseq[i];
+ tower->floors[2 + i].lhs.lhs_data = data_blob_talloc(mem_ctx, NULL, 0);
+ ZERO_STRUCT(tower->floors[2 + i].rhs);
+ dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[2 + i], "");
+ }
+
+ /* The 4th floor contains the endpoint */
+ if (num_protocols >= 2 && binding->endpoint) {
+ status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[3], binding->endpoint);
+ if (NT_STATUS_IS_ERR(status)) {
+ return status;
+ }
+ }
+
+ /* The 5th contains the network address */
+ if (num_protocols >= 3 && binding->host) {
+ if (is_ipaddress(binding->host)) {
+ status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[4],
+ binding->host);
+ } else {
+ /* note that we don't attempt to resolve the
+ name here - when we get a hostname here we
+ are in the client code, and want to put in
+ a wildcard all-zeros IP for the server to
+ fill in */
+ status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[4],
+ "0.0.0.0");
+ }
+ if (NT_STATUS_IS_ERR(status)) {
+ return status;
+ }
+ }
+
+ return NT_STATUS_OK;
+}
--- /dev/null
+/*
+ Unix SMB/CIFS implementation.
+
+ dcerpc utility functions
+
+ Copyright (C) Andrew Tridgell 2003
+ Copyright (C) Jelmer Vernooij 2004
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
+ Copyright (C) Rafal Szczesniak 2006
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "lib/events/events.h"
+#include "libcli/composite/composite.h"
+#include "librpc/gen_ndr/ndr_epmapper_c.h"
+#include "librpc/gen_ndr/ndr_dcerpc.h"
+#include "librpc/gen_ndr/ndr_misc.h"
+#include "librpc/rpc/dcerpc_proto.h"
+#include "auth/credentials/credentials.h"
+#include "param/param.h"
+
+/*
+ find a dcerpc call on an interface by name
+*/
+const struct ndr_interface_call *dcerpc_iface_find_call(const struct ndr_interface_table *iface,
+ const char *name)
+{
+ int i;
+ for (i=0;i<iface->num_calls;i++) {
+ if (strcmp(iface->calls[i].name, name) == 0) {
+ return &iface->calls[i];
+ }
+ }
+ return NULL;
+}
+
+/*
+ push a ncacn_packet into a blob, potentially with auth info
+*/
+NTSTATUS ncacn_push_auth(DATA_BLOB *blob, TALLOC_CTX *mem_ctx,
+ struct smb_iconv_convenience *iconv_convenience,
+ struct ncacn_packet *pkt,
+ struct dcerpc_auth *auth_info)
+{
+ struct ndr_push *ndr;
+ enum ndr_err_code ndr_err;
+
+ ndr = ndr_push_init_ctx(mem_ctx, iconv_convenience);
+ if (!ndr) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (!(pkt->drep[0] & DCERPC_DREP_LE)) {
+ ndr->flags |= LIBNDR_FLAG_BIGENDIAN;
+ }
+
+ if (pkt->pfc_flags & DCERPC_PFC_FLAG_OBJECT_UUID) {
+ ndr->flags |= LIBNDR_FLAG_OBJECT_PRESENT;
+ }
+
+ if (auth_info) {
+ pkt->auth_length = auth_info->credentials.length;
+ } else {
+ pkt->auth_length = 0;
+ }
+
+ ndr_err = ndr_push_ncacn_packet(ndr, NDR_SCALARS|NDR_BUFFERS, pkt);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ return ndr_map_error2ntstatus(ndr_err);
+ }
+
+ if (auth_info) {
+ ndr_err = ndr_push_dcerpc_auth(ndr, NDR_SCALARS|NDR_BUFFERS, auth_info);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ return ndr_map_error2ntstatus(ndr_err);
+ }
+ }
+
+ *blob = ndr_push_blob(ndr);
+
+ /* fill in the frag length */
+ dcerpc_set_frag_length(blob, blob->length);
+
+ return NT_STATUS_OK;
+}
+
+#define MAX_PROTSEQ 10
+
+static const struct {
+ const char *name;
+ enum dcerpc_transport_t transport;
+ int num_protocols;
+ enum epm_protocol protseq[MAX_PROTSEQ];
+} transports[] = {
+ { "ncacn_np", NCACN_NP, 3,
+ { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_SMB, EPM_PROTOCOL_NETBIOS }},
+ { "ncacn_ip_tcp", NCACN_IP_TCP, 3,
+ { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_TCP, EPM_PROTOCOL_IP } },
+ { "ncacn_http", NCACN_HTTP, 3,
+ { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_HTTP, EPM_PROTOCOL_IP } },
+ { "ncadg_ip_udp", NCACN_IP_UDP, 3,
+ { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_UDP, EPM_PROTOCOL_IP } },
+ { "ncalrpc", NCALRPC, 2,
+ { EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_PIPE } },
+ { "ncacn_unix_stream", NCACN_UNIX_STREAM, 2,
+ { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_UNIX_DS } },
+ { "ncadg_unix_dgram", NCADG_UNIX_DGRAM, 2,
+ { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_UNIX_DS } },
+ { "ncacn_at_dsp", NCACN_AT_DSP, 3,
+ { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_APPLETALK, EPM_PROTOCOL_DSP } },
+ { "ncadg_at_ddp", NCADG_AT_DDP, 3,
+ { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_APPLETALK, EPM_PROTOCOL_DDP } },
+ { "ncacn_vns_ssp", NCACN_VNS_SPP, 3,
+ { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_STREETTALK, EPM_PROTOCOL_VINES_SPP } },
+ { "ncacn_vns_ipc", NCACN_VNS_IPC, 3,
+ { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_STREETTALK, EPM_PROTOCOL_VINES_IPC }, },
+ { "ncadg_ipx", NCADG_IPX, 2,
+ { EPM_PROTOCOL_NCADG, EPM_PROTOCOL_IPX },
+ },
+ { "ncacn_spx", NCACN_SPX, 3,
+ /* I guess some MS programmer confused the identifier for
+ * EPM_PROTOCOL_UUID (0x0D or 13) with the one for
+ * EPM_PROTOCOL_SPX (0x13) here. -- jelmer*/
+ { EPM_PROTOCOL_NCACN, EPM_PROTOCOL_NCALRPC, EPM_PROTOCOL_UUID },
+ },
+};
+
+static const struct {
+ const char *name;
+ uint32_t flag;
+} ncacn_options[] = {
+ {"sign", DCERPC_SIGN},
+ {"seal", DCERPC_SEAL},
+ {"connect", DCERPC_CONNECT},
+ {"spnego", DCERPC_AUTH_SPNEGO},
+ {"ntlm", DCERPC_AUTH_NTLM},
+ {"krb5", DCERPC_AUTH_KRB5},
+ {"validate", DCERPC_DEBUG_VALIDATE_BOTH},
+ {"print", DCERPC_DEBUG_PRINT_BOTH},
+ {"padcheck", DCERPC_DEBUG_PAD_CHECK},
+ {"bigendian", DCERPC_PUSH_BIGENDIAN},
+ {"smb2", DCERPC_SMB2}
+};
+
+const char *epm_floor_string(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor)
+{
+ struct ndr_syntax_id syntax;
+ NTSTATUS status;
+
+ switch(epm_floor->lhs.protocol) {
+ case EPM_PROTOCOL_UUID:
+ status = dcerpc_floor_get_lhs_data(epm_floor, &syntax);
+ if (NT_STATUS_IS_OK(status)) {
+ /* lhs is used: UUID */
+ char *uuidstr;
+
+ if (GUID_equal(&syntax.uuid, &ndr_transfer_syntax.uuid)) {
+ return "NDR";
+ }
+
+ if (GUID_equal(&syntax.uuid, &ndr64_transfer_syntax.uuid)) {
+ return "NDR64";
+ }
+
+ uuidstr = GUID_string(mem_ctx, &syntax.uuid);
+
+ return talloc_asprintf(mem_ctx, " uuid %s/0x%02x", uuidstr, syntax.if_version);
+ } else { /* IPX */
+ return talloc_asprintf(mem_ctx, "IPX:%s",
+ data_blob_hex_string(mem_ctx, &epm_floor->rhs.uuid.unknown));
+ }
+
+ case EPM_PROTOCOL_NCACN:
+ return "RPC-C";
+
+ case EPM_PROTOCOL_NCADG:
+ return "RPC";
+
+ case EPM_PROTOCOL_NCALRPC:
+ return "NCALRPC";
+
+ case EPM_PROTOCOL_DNET_NSP:
+ return "DNET/NSP";
+
+ case EPM_PROTOCOL_IP:
+ return talloc_asprintf(mem_ctx, "IP:%s", epm_floor->rhs.ip.ipaddr);
+
+ case EPM_PROTOCOL_PIPE:
+ return talloc_asprintf(mem_ctx, "PIPE:%s", epm_floor->rhs.pipe.path);
+
+ case EPM_PROTOCOL_SMB:
+ return talloc_asprintf(mem_ctx, "SMB:%s", epm_floor->rhs.smb.unc);
+
+ case EPM_PROTOCOL_UNIX_DS:
+ return talloc_asprintf(mem_ctx, "Unix:%s", epm_floor->rhs.unix_ds.path);
+
+ case EPM_PROTOCOL_NETBIOS:
+ return talloc_asprintf(mem_ctx, "NetBIOS:%s", epm_floor->rhs.netbios.name);
+
+ case EPM_PROTOCOL_NETBEUI:
+ return "NETBeui";
+
+ case EPM_PROTOCOL_SPX:
+ return "SPX";
+
+ case EPM_PROTOCOL_NB_IPX:
+ return "NB_IPX";
+
+ case EPM_PROTOCOL_HTTP:
+ return talloc_asprintf(mem_ctx, "HTTP:%d", epm_floor->rhs.http.port);
+
+ case EPM_PROTOCOL_TCP:
+ return talloc_asprintf(mem_ctx, "TCP:%d", epm_floor->rhs.tcp.port);
+
+ case EPM_PROTOCOL_UDP:
+ return talloc_asprintf(mem_ctx, "UDP:%d", epm_floor->rhs.udp.port);
+
+ default:
+ return talloc_asprintf(mem_ctx, "UNK(%02x):", epm_floor->lhs.protocol);
+ }
+}
+
+
+/*
+ form a binding string from a binding structure
+*/
+_PUBLIC_ char *dcerpc_binding_string(TALLOC_CTX *mem_ctx, const struct dcerpc_binding *b)
+{
+ char *s = talloc_strdup(mem_ctx, "");
+ int i;
+ const char *t_name = NULL;
+
+ if (b->transport != NCA_UNKNOWN) {
+ for (i=0;i<ARRAY_SIZE(transports);i++) {
+ if (transports[i].transport == b->transport) {
+ t_name = transports[i].name;
+ }
+ }
+ if (!t_name) {
+ return NULL;
+ }
+ }
+
+ if (!GUID_all_zero(&b->object.uuid)) {
+ s = talloc_asprintf(s, "%s@",
+ GUID_string(mem_ctx, &b->object.uuid));
+ }
+
+ if (t_name != NULL) {
+ s = talloc_asprintf_append_buffer(s, "%s:", t_name);
+ if (s == NULL) {
+ return NULL;
+ }
+ }
+
+ if (b->host) {
+ s = talloc_asprintf_append_buffer(s, "%s", b->host);
+ }
+
+ if (!b->endpoint && !b->options && !b->flags) {
+ return s;
+ }
+
+ s = talloc_asprintf_append_buffer(s, "[");
+
+ if (b->endpoint) {
+ s = talloc_asprintf_append_buffer(s, "%s", b->endpoint);
+ }
+
+ /* this is a *really* inefficent way of dealing with strings,
+ but this is rarely called and the strings are always short,
+ so I don't care */
+ for (i=0;b->options && b->options[i];i++) {
+ s = talloc_asprintf_append_buffer(s, ",%s", b->options[i]);
+ if (!s) return NULL;
+ }
+
+ for (i=0;i<ARRAY_SIZE(ncacn_options);i++) {
+ if (b->flags & ncacn_options[i].flag) {
+ s = talloc_asprintf_append_buffer(s, ",%s", ncacn_options[i].name);
+ if (!s) return NULL;
+ }
+ }
+
+ s = talloc_asprintf_append_buffer(s, "]");
+
+ return s;
+}
+
+/*
+ parse a binding string into a dcerpc_binding structure
+*/
+_PUBLIC_ NTSTATUS dcerpc_parse_binding(TALLOC_CTX *mem_ctx, const char *s, struct dcerpc_binding **b_out)
+{
+ struct dcerpc_binding *b;
+ char *options;
+ char *p;
+ int i, j, comma_count;
+
+ b = talloc(mem_ctx, struct dcerpc_binding);
+ if (!b) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ p = strchr(s, '@');
+
+ if (p && PTR_DIFF(p, s) == 36) { /* 36 is the length of a UUID */
+ NTSTATUS status;
+
+ status = GUID_from_string(s, &b->object.uuid);
+
+ if (NT_STATUS_IS_ERR(status)) {
+ DEBUG(0, ("Failed parsing UUID\n"));
+ return status;
+ }
+
+ s = p + 1;
+ } else {
+ ZERO_STRUCT(b->object);
+ }
+
+ b->object.if_version = 0;
+
+ p = strchr(s, ':');
+
+ if (p == NULL) {
+ b->transport = NCA_UNKNOWN;
+ } else {
+ char *type = talloc_strndup(mem_ctx, s, PTR_DIFF(p, s));
+ if (!type) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ for (i=0;i<ARRAY_SIZE(transports);i++) {
+ if (strcasecmp(type, transports[i].name) == 0) {
+ b->transport = transports[i].transport;
+ break;
+ }
+ }
+
+ if (i==ARRAY_SIZE(transports)) {
+ DEBUG(0,("Unknown dcerpc transport '%s'\n", type));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ talloc_free(type);
+
+ s = p+1;
+ }
+
+ p = strchr(s, '[');
+ if (p) {
+ b->host = talloc_strndup(b, s, PTR_DIFF(p, s));
+ options = talloc_strdup(mem_ctx, p+1);
+ if (options[strlen(options)-1] != ']') {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ options[strlen(options)-1] = 0;
+ } else {
+ b->host = talloc_strdup(b, s);
+ options = NULL;
+ }
+ if (!b->host) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ b->target_hostname = b->host;
+
+ b->options = NULL;
+ b->flags = 0;
+ b->assoc_group_id = 0;
+ b->endpoint = NULL;
+
+ if (!options) {
+ *b_out = b;
+ return NT_STATUS_OK;
+ }
+
+ comma_count = count_chars(options, ',');
+
+ b->options = talloc_array(b, const char *, comma_count+2);
+ if (!b->options) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ for (i=0; (p = strchr(options, ',')); i++) {
+ b->options[i] = talloc_strndup(b, options, PTR_DIFF(p, options));
+ if (!b->options[i]) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ options = p+1;
+ }
+ b->options[i] = options;
+ b->options[i+1] = NULL;
+
+ /* some options are pre-parsed for convenience */
+ for (i=0;b->options[i];i++) {
+ for (j=0;j<ARRAY_SIZE(ncacn_options);j++) {
+ if (strcasecmp(ncacn_options[j].name, b->options[i]) == 0) {
+ int k;
+ b->flags |= ncacn_options[j].flag;
+ for (k=i;b->options[k];k++) {
+ b->options[k] = b->options[k+1];
+ }
+ i--;
+ break;
+ }
+ }
+ }
+
+ if (b->options[0]) {
+ /* Endpoint is first option */
+ b->endpoint = b->options[0];
+ if (strlen(b->endpoint) == 0) b->endpoint = NULL;
+
+ for (i=0;b->options[i];i++) {
+ b->options[i] = b->options[i+1];
+ }
+ }
+
+ if (b->options[0] == NULL)
+ b->options = NULL;
+
+ *b_out = b;
+ return NT_STATUS_OK;
+}
+
+_PUBLIC_ NTSTATUS dcerpc_floor_get_lhs_data(struct epm_floor *epm_floor, struct ndr_syntax_id *syntax)
+{
+ TALLOC_CTX *mem_ctx = talloc_init("floor_get_lhs_data");
+ struct ndr_pull *ndr = ndr_pull_init_blob(&epm_floor->lhs.lhs_data, mem_ctx, NULL);
+ enum ndr_err_code ndr_err;
+ uint16_t if_version=0;
+
+ ndr->flags |= LIBNDR_FLAG_NOALIGN;
+
+ ndr_err = ndr_pull_GUID(ndr, NDR_SCALARS | NDR_BUFFERS, &syntax->uuid);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ talloc_free(mem_ctx);
+ return ndr_map_error2ntstatus(ndr_err);
+ }
+
+ ndr_err = ndr_pull_uint16(ndr, NDR_SCALARS, &if_version);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ talloc_free(mem_ctx);
+ return ndr_map_error2ntstatus(ndr_err);
+ }
+
+ syntax->if_version = if_version;
+
+ talloc_free(mem_ctx);
+
+ return NT_STATUS_OK;
+}
+
+static DATA_BLOB dcerpc_floor_pack_lhs_data(TALLOC_CTX *mem_ctx, const struct ndr_syntax_id *syntax)
+{
+ struct ndr_push *ndr = ndr_push_init_ctx(mem_ctx, NULL);
+
+ ndr->flags |= LIBNDR_FLAG_NOALIGN;
+
+ ndr_push_GUID(ndr, NDR_SCALARS | NDR_BUFFERS, &syntax->uuid);
+ ndr_push_uint16(ndr, NDR_SCALARS, syntax->if_version);
+
+ return ndr_push_blob(ndr);
+}
+
+const char *dcerpc_floor_get_rhs_data(TALLOC_CTX *mem_ctx, struct epm_floor *epm_floor)
+{
+ switch (epm_floor->lhs.protocol) {
+ case EPM_PROTOCOL_TCP:
+ if (epm_floor->rhs.tcp.port == 0) return NULL;
+ return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.tcp.port);
+
+ case EPM_PROTOCOL_UDP:
+ if (epm_floor->rhs.udp.port == 0) return NULL;
+ return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.udp.port);
+
+ case EPM_PROTOCOL_HTTP:
+ if (epm_floor->rhs.http.port == 0) return NULL;
+ return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.http.port);
+
+ case EPM_PROTOCOL_IP:
+ return talloc_strdup(mem_ctx, epm_floor->rhs.ip.ipaddr);
+
+ case EPM_PROTOCOL_NCACN:
+ return NULL;
+
+ case EPM_PROTOCOL_NCADG:
+ return NULL;
+
+ case EPM_PROTOCOL_SMB:
+ if (strlen(epm_floor->rhs.smb.unc) == 0) return NULL;
+ return talloc_strdup(mem_ctx, epm_floor->rhs.smb.unc);
+
+ case EPM_PROTOCOL_PIPE:
+ if (strlen(epm_floor->rhs.pipe.path) == 0) return NULL;
+ return talloc_strdup(mem_ctx, epm_floor->rhs.pipe.path);
+
+ case EPM_PROTOCOL_NETBIOS:
+ if (strlen(epm_floor->rhs.netbios.name) == 0) return NULL;
+ return talloc_strdup(mem_ctx, epm_floor->rhs.netbios.name);
+
+ case EPM_PROTOCOL_NCALRPC:
+ return NULL;
+
+ case EPM_PROTOCOL_VINES_SPP:
+ return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.vines_spp.port);
+
+ case EPM_PROTOCOL_VINES_IPC:
+ return talloc_asprintf(mem_ctx, "%d", epm_floor->rhs.vines_ipc.port);
+
+ case EPM_PROTOCOL_STREETTALK:
+ return talloc_strdup(mem_ctx, epm_floor->rhs.streettalk.streettalk);
+
+ case EPM_PROTOCOL_UNIX_DS:
+ if (strlen(epm_floor->rhs.unix_ds.path) == 0) return NULL;
+ return talloc_strdup(mem_ctx, epm_floor->rhs.unix_ds.path);
+
+ case EPM_PROTOCOL_NULL:
+ return NULL;
+
+ default:
+ DEBUG(0,("Unsupported lhs protocol %d\n", epm_floor->lhs.protocol));
+ break;
+ }
+
+ return NULL;
+}
+
+static NTSTATUS dcerpc_floor_set_rhs_data(TALLOC_CTX *mem_ctx,
+ struct epm_floor *epm_floor,
+ const char *data)
+{
+ switch (epm_floor->lhs.protocol) {
+ case EPM_PROTOCOL_TCP:
+ epm_floor->rhs.tcp.port = atoi(data);
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_UDP:
+ epm_floor->rhs.udp.port = atoi(data);
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_HTTP:
+ epm_floor->rhs.http.port = atoi(data);
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_IP:
+ epm_floor->rhs.ip.ipaddr = talloc_strdup(mem_ctx, data);
+ NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.ip.ipaddr);
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_NCACN:
+ epm_floor->rhs.ncacn.minor_version = 0;
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_NCADG:
+ epm_floor->rhs.ncadg.minor_version = 0;
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_SMB:
+ epm_floor->rhs.smb.unc = talloc_strdup(mem_ctx, data);
+ NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.smb.unc);
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_PIPE:
+ epm_floor->rhs.pipe.path = talloc_strdup(mem_ctx, data);
+ NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.pipe.path);
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_NETBIOS:
+ epm_floor->rhs.netbios.name = talloc_strdup(mem_ctx, data);
+ NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.netbios.name);
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_NCALRPC:
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_VINES_SPP:
+ epm_floor->rhs.vines_spp.port = atoi(data);
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_VINES_IPC:
+ epm_floor->rhs.vines_ipc.port = atoi(data);
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_STREETTALK:
+ epm_floor->rhs.streettalk.streettalk = talloc_strdup(mem_ctx, data);
+ NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.streettalk.streettalk);
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_UNIX_DS:
+ epm_floor->rhs.unix_ds.path = talloc_strdup(mem_ctx, data);
+ NT_STATUS_HAVE_NO_MEMORY(epm_floor->rhs.unix_ds.path);
+ return NT_STATUS_OK;
+
+ case EPM_PROTOCOL_NULL:
+ return NT_STATUS_OK;
+
+ default:
+ DEBUG(0,("Unsupported lhs protocol %d\n", epm_floor->lhs.protocol));
+ break;
+ }
+
+ return NT_STATUS_NOT_SUPPORTED;
+}
+
+enum dcerpc_transport_t dcerpc_transport_by_endpoint_protocol(int prot)
+{
+ int i;
+
+ /* Find a transport that has 'prot' as 4th protocol */
+ for (i=0;i<ARRAY_SIZE(transports);i++) {
+ if (transports[i].num_protocols >= 2 &&
+ transports[i].protseq[1] == prot) {
+ return transports[i].transport;
+ }
+ }
+
+ /* Unknown transport */
+ return (unsigned int)-1;
+}
+
+_PUBLIC_ enum dcerpc_transport_t dcerpc_transport_by_tower(struct epm_tower *tower)
+{
+ int i;
+
+ /* Find a transport that matches this tower */
+ for (i=0;i<ARRAY_SIZE(transports);i++) {
+ int j;
+ if (transports[i].num_protocols != tower->num_floors - 2) {
+ continue;
+ }
+
+ for (j = 0; j < transports[i].num_protocols; j++) {
+ if (transports[i].protseq[j] != tower->floors[j+2].lhs.protocol) {
+ break;
+ }
+ }
+
+ if (j == transports[i].num_protocols) {
+ return transports[i].transport;
+ }
+ }
+
+ /* Unknown transport */
+ return (unsigned int)-1;
+}
+
+_PUBLIC_ NTSTATUS dcerpc_binding_from_tower(TALLOC_CTX *mem_ctx,
+ struct epm_tower *tower,
+ struct dcerpc_binding **b_out)
+{
+ NTSTATUS status;
+ struct dcerpc_binding *binding;
+
+ binding = talloc(mem_ctx, struct dcerpc_binding);
+ NT_STATUS_HAVE_NO_MEMORY(binding);
+
+ ZERO_STRUCT(binding->object);
+ binding->options = NULL;
+ binding->host = NULL;
+ binding->target_hostname = NULL;
+ binding->flags = 0;
+ binding->assoc_group_id = 0;
+
+ binding->transport = dcerpc_transport_by_tower(tower);
+
+ if (binding->transport == (unsigned int)-1) {
+ return NT_STATUS_NOT_SUPPORTED;
+ }
+
+ if (tower->num_floors < 1) {
+ return NT_STATUS_OK;
+ }
+
+ /* Set object uuid */
+ status = dcerpc_floor_get_lhs_data(&tower->floors[0], &binding->object);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("Error pulling object uuid and version: %s", nt_errstr(status)));
+ return status;
+ }
+
+ /* Ignore floor 1, it contains the NDR version info */
+
+ binding->options = NULL;
+
+ /* Set endpoint */
+ if (tower->num_floors >= 4) {
+ binding->endpoint = dcerpc_floor_get_rhs_data(mem_ctx, &tower->floors[3]);
+ } else {
+ binding->endpoint = NULL;
+ }
+
+ /* Set network address */
+ if (tower->num_floors >= 5) {
+ binding->host = dcerpc_floor_get_rhs_data(mem_ctx, &tower->floors[4]);
+ NT_STATUS_HAVE_NO_MEMORY(binding->host);
+ binding->target_hostname = binding->host;
+ }
+ *b_out = binding;
+ return NT_STATUS_OK;
+}
+
+_PUBLIC_ NTSTATUS dcerpc_binding_build_tower(TALLOC_CTX *mem_ctx, struct dcerpc_binding *binding, struct epm_tower *tower)
+{
+ const enum epm_protocol *protseq = NULL;
+ int num_protocols = -1, i;
+ NTSTATUS status;
+
+ /* Find transport */
+ for (i=0;i<ARRAY_SIZE(transports);i++) {
+ if (transports[i].transport == binding->transport) {
+ protseq = transports[i].protseq;
+ num_protocols = transports[i].num_protocols;
+ break;
+ }
+ }
+
+ if (num_protocols == -1) {
+ DEBUG(0, ("Unable to find transport with id '%d'\n", binding->transport));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ tower->num_floors = 2 + num_protocols;
+ tower->floors = talloc_array(mem_ctx, struct epm_floor, tower->num_floors);
+
+ /* Floor 0 */
+ tower->floors[0].lhs.protocol = EPM_PROTOCOL_UUID;
+
+ tower->floors[0].lhs.lhs_data = dcerpc_floor_pack_lhs_data(mem_ctx, &binding->object);
+
+ tower->floors[0].rhs.uuid.unknown = data_blob_talloc_zero(mem_ctx, 2);
+
+ /* Floor 1 */
+ tower->floors[1].lhs.protocol = EPM_PROTOCOL_UUID;
+
+ tower->floors[1].lhs.lhs_data = dcerpc_floor_pack_lhs_data(mem_ctx,
+ &ndr_transfer_syntax);
+
+ tower->floors[1].rhs.uuid.unknown = data_blob_talloc_zero(mem_ctx, 2);
+
+ /* Floor 2 to num_protocols */
+ for (i = 0; i < num_protocols; i++) {
+ tower->floors[2 + i].lhs.protocol = protseq[i];
+ tower->floors[2 + i].lhs.lhs_data = data_blob_talloc(mem_ctx, NULL, 0);
+ ZERO_STRUCT(tower->floors[2 + i].rhs);
+ dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[2 + i], "");
+ }
+
+ /* The 4th floor contains the endpoint */
+ if (num_protocols >= 2 && binding->endpoint) {
+ status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[3], binding->endpoint);
+ if (NT_STATUS_IS_ERR(status)) {
+ return status;
+ }
+ }
+
+ /* The 5th contains the network address */
+ if (num_protocols >= 3 && binding->host) {
+ if (is_ipaddress(binding->host)) {
+ status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[4],
+ binding->host);
+ } else {
+ /* note that we don't attempt to resolve the
+ name here - when we get a hostname here we
+ are in the client code, and want to put in
+ a wildcard all-zeros IP for the server to
+ fill in */
+ status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[4],
+ "0.0.0.0");
+ }
+ if (NT_STATUS_IS_ERR(status)) {
+ return status;
+ }
+ }
+
+ return NT_STATUS_OK;
+}
+
+
+struct epm_map_binding_state {
+ struct dcerpc_binding *binding;
+ const struct ndr_interface_table *table;
+ struct dcerpc_pipe *pipe;
+ struct policy_handle handle;
+ struct GUID guid;
+ struct epm_twr_t twr;
+ struct epm_twr_t *twr_r;
+ struct epm_Map r;
+};
+
+
+static void continue_epm_recv_binding(struct composite_context *ctx);
+static void continue_epm_map(struct rpc_request *req);
+
+
+/*
+ Stage 2 of epm_map_binding: Receive connected rpc pipe and send endpoint
+ mapping rpc request
+*/
+static void continue_epm_recv_binding(struct composite_context *ctx)
+{
+ struct rpc_request *map_req;
+
+ struct composite_context *c = talloc_get_type(ctx->async.private_data,
+ struct composite_context);
+ struct epm_map_binding_state *s = talloc_get_type(c->private_data,
+ struct epm_map_binding_state);
+
+ /* receive result of rpc pipe connect request */
+ c->status = dcerpc_pipe_connect_b_recv(ctx, c, &s->pipe);
+ if (!composite_is_ok(c)) return;
+
+ s->pipe->conn->flags |= DCERPC_NDR_REF_ALLOC;
+
+ /* prepare requested binding parameters */
+ s->binding->object = s->table->syntax_id;
+
+ c->status = dcerpc_binding_build_tower(s->pipe, s->binding, &s->twr.tower);
+ if (!composite_is_ok(c)) return;
+
+ /* with some nice pretty paper around it of course */
+ s->r.in.object = &s->guid;
+ s->r.in.map_tower = &s->twr;
+ s->r.in.entry_handle = &s->handle;
+ s->r.in.max_towers = 1;
+ s->r.out.entry_handle = &s->handle;
+
+ /* send request for an endpoint mapping - a rpc request on connected pipe */
+ map_req = dcerpc_epm_Map_send(s->pipe, c, &s->r);
+ if (composite_nomem(map_req, c)) return;
+
+ composite_continue_rpc(c, map_req, continue_epm_map, c);
+}
+
+
+/*
+ Stage 3 of epm_map_binding: Receive endpoint mapping and provide binding details
+*/
+static void continue_epm_map(struct rpc_request *req)
+{
+ struct composite_context *c = talloc_get_type(req->async.private_data,
+ struct composite_context);
+ struct epm_map_binding_state *s = talloc_get_type(c->private_data,
+ struct epm_map_binding_state);
+
+ /* receive result of a rpc request */
+ c->status = dcerpc_ndr_request_recv(req);
+ if (!composite_is_ok(c)) return;
+
+ /* check the details */
+ if (s->r.out.result != 0 || *s->r.out.num_towers != 1) {
+ composite_error(c, NT_STATUS_PORT_UNREACHABLE);
+ return;
+ }
+
+ s->twr_r = s->r.out.towers[0].twr;
+ if (s->twr_r == NULL) {
+ composite_error(c, NT_STATUS_PORT_UNREACHABLE);
+ return;
+ }
+
+ if (s->twr_r->tower.num_floors != s->twr.tower.num_floors ||
+ s->twr_r->tower.floors[3].lhs.protocol != s->twr.tower.floors[3].lhs.protocol) {
+ composite_error(c, NT_STATUS_PORT_UNREACHABLE);
+ return;
+ }
+
+ /* get received endpoint */
+ s->binding->endpoint = talloc_reference(s->binding,
+ dcerpc_floor_get_rhs_data(c, &s->twr_r->tower.floors[3]));
+ if (composite_nomem(s->binding->endpoint, c)) return;
+
+ composite_done(c);
+}
+
+
+/*
+ Request for endpoint mapping of dcerpc binding - try to request for endpoint
+ unless there is default one.
+*/
+struct composite_context *dcerpc_epm_map_binding_send(TALLOC_CTX *mem_ctx,
+ struct dcerpc_binding *binding,
+ const struct ndr_interface_table *table,
+ struct event_context *ev,
+ struct loadparm_context *lp_ctx)
+{
+ struct composite_context *c;
+ struct epm_map_binding_state *s;
+ struct composite_context *pipe_connect_req;
+ struct cli_credentials *anon_creds;
+ struct event_context *new_ev = NULL;
+
+ NTSTATUS status;
+ struct dcerpc_binding *epmapper_binding;
+ int i;
+
+ /* Try to find event context in memory context in case passed
+ * event_context (argument) was NULL. If there's none, just
+ * create a new one.
+ */
+ if (ev == NULL) {
+ ev = event_context_find(mem_ctx);
+ if (ev == NULL) {
+ new_ev = event_context_init(mem_ctx);
+ if (new_ev == NULL) return NULL;
+ ev = new_ev;
+ }
+ }
+
+ /* composite context allocation and setup */
+ c = composite_create(mem_ctx, ev);
+ if (c == NULL) {
+ talloc_free(new_ev);
+ return NULL;
+ }
+ talloc_steal(c, new_ev);
+
+ s = talloc_zero(c, struct epm_map_binding_state);
+ if (composite_nomem(s, c)) return c;
+ c->private_data = s;
+
+ s->binding = binding;
+ s->table = table;
+
+ /* anonymous credentials for rpc connection used to get endpoint mapping */
+ anon_creds = cli_credentials_init(mem_ctx);
+ cli_credentials_set_event_context(anon_creds, ev);
+ cli_credentials_set_anonymous(anon_creds);
+
+ /*
+ First, check if there is a default endpoint specified in the IDL
+ */
+ if (table != NULL) {
+ struct dcerpc_binding *default_binding;
+
+ /* Find one of the default pipes for this interface */
+ for (i = 0; i < table->endpoints->count; i++) {
+ status = dcerpc_parse_binding(mem_ctx, table->endpoints->names[i], &default_binding);
+
+ if (NT_STATUS_IS_OK(status)) {
+ if (binding->transport == NCA_UNKNOWN)
+ binding->transport = default_binding->transport;
+ if (default_binding->transport == binding->transport &&
+ default_binding->endpoint) {
+ binding->endpoint = talloc_reference(binding, default_binding->endpoint);
+ talloc_free(default_binding);
+
+ composite_done(c);
+ return c;
+
+ } else {
+ talloc_free(default_binding);
+ }
+ }
+ }
+ }
+
+ epmapper_binding = talloc_zero(c, struct dcerpc_binding);
+ if (composite_nomem(epmapper_binding, c)) return c;
+
+ /* basic endpoint mapping data */
+ epmapper_binding->transport = binding->transport;
+ epmapper_binding->host = talloc_reference(epmapper_binding, binding->host);
+ epmapper_binding->target_hostname = epmapper_binding->host;
+ epmapper_binding->options = NULL;
+ epmapper_binding->flags = 0;
+ epmapper_binding->assoc_group_id = 0;
+ epmapper_binding->endpoint = NULL;
+
+ /* initiate rpc pipe connection */
+ pipe_connect_req = dcerpc_pipe_connect_b_send(c, epmapper_binding,
+ &ndr_table_epmapper,
+ anon_creds, c->event_ctx,
+ lp_ctx);
+ if (composite_nomem(pipe_connect_req, c)) return c;
+
+ composite_continue(c, pipe_connect_req, continue_epm_recv_binding, c);
+ return c;
+}
+
+
+/*
+ Receive result of endpoint mapping request
+ */
+NTSTATUS dcerpc_epm_map_binding_recv(struct composite_context *c)
+{
+ NTSTATUS status = composite_wait(c);
+
+ talloc_free(c);
+ return status;
+}
+
+
+/*
+ Get endpoint mapping for rpc connection
+*/
+_PUBLIC_ NTSTATUS dcerpc_epm_map_binding(TALLOC_CTX *mem_ctx, struct dcerpc_binding *binding,
+ const struct ndr_interface_table *table, struct event_context *ev,
+ struct loadparm_context *lp_ctx)
+{
+ struct composite_context *c;
+
+ c = dcerpc_epm_map_binding_send(mem_ctx, binding, table, ev, lp_ctx);
+ return dcerpc_epm_map_binding_recv(c);
+}
+
+
+struct pipe_auth_state {
+ struct dcerpc_pipe *pipe;
+ struct dcerpc_binding *binding;
+ const struct ndr_interface_table *table;
+ struct loadparm_context *lp_ctx;
+ struct cli_credentials *credentials;
+};
+
+
+static void continue_auth_schannel(struct composite_context *ctx);
+static void continue_auth(struct composite_context *ctx);
+static void continue_auth_none(struct composite_context *ctx);
+static void continue_ntlmssp_connection(struct composite_context *ctx);
+static void continue_spnego_after_wrong_pass(struct composite_context *ctx);
+
+
+/*
+ Stage 2 of pipe_auth: Receive result of schannel bind request
+*/
+static void continue_auth_schannel(struct composite_context *ctx)
+{
+ struct composite_context *c = talloc_get_type(ctx->async.private_data,
+ struct composite_context);
+
+ c->status = dcerpc_bind_auth_schannel_recv(ctx);
+ if (!composite_is_ok(c)) return;
+
+ composite_done(c);
+}
+
+
+/*
+ Stage 2 of pipe_auth: Receive result of authenticated bind request
+*/
+static void continue_auth(struct composite_context *ctx)
+{
+ struct composite_context *c = talloc_get_type(ctx->async.private_data,
+ struct composite_context);
+
+ c->status = dcerpc_bind_auth_recv(ctx);
+ if (!composite_is_ok(c)) return;
+
+ composite_done(c);
+}
+/*
+ Stage 2 of pipe_auth: Receive result of authenticated bind request, but handle fallbacks:
+ SPNEGO -> NTLMSSP
+*/
+static void continue_auth_auto(struct composite_context *ctx)
+{
+ struct composite_context *c = talloc_get_type(ctx->async.private_data,
+ struct composite_context);
+ struct pipe_auth_state *s = talloc_get_type(c->private_data, struct pipe_auth_state);
+ struct composite_context *sec_conn_req;
+
+ c->status = dcerpc_bind_auth_recv(ctx);
+ if (NT_STATUS_EQUAL(c->status, NT_STATUS_INVALID_PARAMETER)) {
+ /*
+ * Retry with NTLMSSP auth as fallback
+ * send a request for secondary rpc connection
+ */
+ sec_conn_req = dcerpc_secondary_connection_send(s->pipe,
+ s->binding);
+ composite_continue(c, sec_conn_req, continue_ntlmssp_connection, c);
+ return;
+ } else if (NT_STATUS_EQUAL(c->status, NT_STATUS_LOGON_FAILURE)) {
+ if (cli_credentials_wrong_password(s->credentials)) {
+ /*
+ * Retry SPNEGO with a better password
+ * send a request for secondary rpc connection
+ */
+ sec_conn_req = dcerpc_secondary_connection_send(s->pipe,
+ s->binding);
+ composite_continue(c, sec_conn_req, continue_spnego_after_wrong_pass, c);
+ return;
+ }
+ }
+
+ if (!composite_is_ok(c)) return;
+
+ composite_done(c);
+}
+
+/*
+ Stage 3 of pipe_auth (fallback to NTLMSSP case): Receive secondary
+ rpc connection (the first one can't be used any more, due to the
+ bind nak) and perform authenticated bind request
+*/
+static void continue_ntlmssp_connection(struct composite_context *ctx)
+{
+ struct composite_context *c;
+ struct pipe_auth_state *s;
+ struct composite_context *auth_req;
+ struct dcerpc_pipe *p2;
+
+ c = talloc_get_type(ctx->async.private_data, struct composite_context);
+ s = talloc_get_type(c->private_data, struct pipe_auth_state);
+
+ /* receive secondary rpc connection */
+ c->status = dcerpc_secondary_connection_recv(ctx, &p2);
+ if (!composite_is_ok(c)) return;
+
+ talloc_steal(s, p2);
+ talloc_steal(p2, s->pipe);
+ s->pipe = p2;
+
+ /* initiate a authenticated bind */
+ auth_req = dcerpc_bind_auth_send(c, s->pipe, s->table,
+ s->credentials, s->lp_ctx,
+ DCERPC_AUTH_TYPE_NTLMSSP,
+ dcerpc_auth_level(s->pipe->conn),
+ s->table->authservices->names[0]);
+ composite_continue(c, auth_req, continue_auth, c);
+}
+
+/*
+ Stage 3 of pipe_auth (retry on wrong password): Receive secondary
+ rpc connection (the first one can't be used any more, due to the
+ bind nak) and perform authenticated bind request
+*/
+static void continue_spnego_after_wrong_pass(struct composite_context *ctx)
+{
+ struct composite_context *c;
+ struct pipe_auth_state *s;
+ struct composite_context *auth_req;
+ struct dcerpc_pipe *p2;
+
+ c = talloc_get_type(ctx->async.private_data, struct composite_context);
+ s = talloc_get_type(c->private_data, struct pipe_auth_state);
+
+ /* receive secondary rpc connection */
+ c->status = dcerpc_secondary_connection_recv(ctx, &p2);
+ if (!composite_is_ok(c)) return;
+
+ talloc_steal(s, p2);
+ talloc_steal(p2, s->pipe);
+ s->pipe = p2;
+
+ /* initiate a authenticated bind */
+ auth_req = dcerpc_bind_auth_send(c, s->pipe, s->table,
+ s->credentials, s->lp_ctx, DCERPC_AUTH_TYPE_SPNEGO,
+ dcerpc_auth_level(s->pipe->conn),
+ s->table->authservices->names[0]);
+ composite_continue(c, auth_req, continue_auth, c);
+}
+
+
+/*
+ Stage 2 of pipe_auth: Receive result of non-authenticated bind request
+*/
+static void continue_auth_none(struct composite_context *ctx)
+{
+ struct composite_context *c = talloc_get_type(ctx->async.private_data,
+ struct composite_context);
+
+ c->status = dcerpc_bind_auth_none_recv(ctx);
+ if (!composite_is_ok(c)) return;
+
+ composite_done(c);
+}
+
+
+/*
+ Request to perform an authenticated bind if required. Authentication
+ is determined using credentials passed and binding flags.
+*/
+struct composite_context *dcerpc_pipe_auth_send(struct dcerpc_pipe *p,
+ struct dcerpc_binding *binding,
+ const struct ndr_interface_table *table,
+ struct cli_credentials *credentials,
+ struct loadparm_context *lp_ctx)
+{
+ struct composite_context *c;
+ struct pipe_auth_state *s;
+ struct composite_context *auth_schannel_req;
+ struct composite_context *auth_req;
+ struct composite_context *auth_none_req;
+ struct dcerpc_connection *conn;
+ uint8_t auth_type;
+
+ /* composite context allocation and setup */
+ c = composite_create(p, p->conn->event_ctx);
+ if (c == NULL) return NULL;
+
+ s = talloc_zero(c, struct pipe_auth_state);
+ if (composite_nomem(s, c)) return c;
+ c->private_data = s;
+
+ /* store parameters in state structure */
+ s->binding = binding;
+ s->table = table;
+ s->credentials = credentials;
+ s->pipe = p;
+ s->lp_ctx = lp_ctx;
+
+ conn = s->pipe->conn;
+ conn->flags = binding->flags;
+
+ /* remember the binding string for possible secondary connections */
+ conn->binding_string = dcerpc_binding_string(p, binding);
+
+ if (cli_credentials_is_anonymous(s->credentials)) {
+ auth_none_req = dcerpc_bind_auth_none_send(c, s->pipe, s->table);
+ composite_continue(c, auth_none_req, continue_auth_none, c);
+ return c;
+ }
+
+ if ((binding->flags & DCERPC_SCHANNEL) &&
+ !cli_credentials_get_netlogon_creds(s->credentials)) {
+ /* If we don't already have netlogon credentials for
+ * the schannel bind, then we have to get these
+ * first */
+ auth_schannel_req = dcerpc_bind_auth_schannel_send(c, s->pipe, s->table,
+ s->credentials, s->lp_ctx,
+ dcerpc_auth_level(conn));
+ composite_continue(c, auth_schannel_req, continue_auth_schannel, c);
+ return c;
+ }
+
+ /*
+ * we rely on the already authenticated CIFS connection
+ * if not doing sign or seal
+ */
+ if (conn->transport.transport == NCACN_NP &&
+ !(s->binding->flags & (DCERPC_SIGN|DCERPC_SEAL))) {
+ auth_none_req = dcerpc_bind_auth_none_send(c, s->pipe, s->table);
+ composite_continue(c, auth_none_req, continue_auth_none, c);
+ return c;
+ }
+
+
+ /* Perform an authenticated DCE-RPC bind
+ */
+ if (!(conn->flags & (DCERPC_SIGN|DCERPC_SEAL))) {
+ /*
+ we are doing an authenticated connection,
+ but not using sign or seal. We must force
+ the CONNECT dcerpc auth type as a NONE auth
+ type doesn't allow authentication
+ information to be passed.
+ */
+ conn->flags |= DCERPC_CONNECT;
+ }
+
+ if (s->binding->flags & DCERPC_AUTH_SPNEGO) {
+ auth_type = DCERPC_AUTH_TYPE_SPNEGO;
+
+ } else if (s->binding->flags & DCERPC_AUTH_KRB5) {
+ auth_type = DCERPC_AUTH_TYPE_KRB5;
+
+ } else if (s->binding->flags & DCERPC_SCHANNEL) {
+ auth_type = DCERPC_AUTH_TYPE_SCHANNEL;
+
+ } else if (s->binding->flags & DCERPC_AUTH_NTLM) {
+ auth_type = DCERPC_AUTH_TYPE_NTLMSSP;
+
+ } else {
+ /* try SPNEGO with fallback to NTLMSSP */
+ auth_req = dcerpc_bind_auth_send(c, s->pipe, s->table,
+ s->credentials, s->lp_ctx, DCERPC_AUTH_TYPE_SPNEGO,
+ dcerpc_auth_level(conn),
+ s->table->authservices->names[0]);
+ composite_continue(c, auth_req, continue_auth_auto, c);
+ return c;
+ }
+
+ auth_req = dcerpc_bind_auth_send(c, s->pipe, s->table,
+ s->credentials, s->lp_ctx, auth_type,
+ dcerpc_auth_level(conn),
+ s->table->authservices->names[0]);
+ composite_continue(c, auth_req, continue_auth, c);
+ return c;
+}
+
+
+/*
+ Receive result of authenticated bind request on dcerpc pipe
+
+ This returns *p, which may be different to the one originally
+ supllied, as it rebinds to a new pipe due to authentication fallback
+
+*/
+NTSTATUS dcerpc_pipe_auth_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
+ struct dcerpc_pipe **p)
+{
+ NTSTATUS status;
+
+ struct pipe_auth_state *s = talloc_get_type(c->private_data,
+ struct pipe_auth_state);
+ status = composite_wait(c);
+ if (!NT_STATUS_IS_OK(status)) {
+ char *uuid_str = GUID_string(s->pipe, &s->table->syntax_id.uuid);
+ DEBUG(0, ("Failed to bind to uuid %s - %s\n", uuid_str, nt_errstr(status)));
+ talloc_free(uuid_str);
+ } else {
+ talloc_steal(mem_ctx, s->pipe);
+ *p = s->pipe;
+ }
+
+ talloc_free(c);
+ return status;
+}
+
+
+/*
+ Perform an authenticated bind if needed - sync version
+
+ This may change *p, as it rebinds to a new pipe due to authentication fallback
+*/
+_PUBLIC_ NTSTATUS dcerpc_pipe_auth(TALLOC_CTX *mem_ctx,
+ struct dcerpc_pipe **p,
+ struct dcerpc_binding *binding,
+ const struct ndr_interface_table *table,
+ struct cli_credentials *credentials,
+ struct loadparm_context *lp_ctx)
+{
+ struct composite_context *c;
+
+ c = dcerpc_pipe_auth_send(*p, binding, table, credentials, lp_ctx);
+ return dcerpc_pipe_auth_recv(c, mem_ctx, p);
+}
+
+
+NTSTATUS dcerpc_generic_session_key(struct dcerpc_connection *c,
+ DATA_BLOB *session_key)
+{
+ /* this took quite a few CPU cycles to find ... */
+ session_key->data = discard_const_p(unsigned char, "SystemLibraryDTC");
+ session_key->length = 16;
+ return NT_STATUS_OK;
+}
+
+/*
+ fetch the user session key - may be default (above) or the SMB session key
+*/
+_PUBLIC_ NTSTATUS dcerpc_fetch_session_key(struct dcerpc_pipe *p,
+ DATA_BLOB *session_key)
+{
+ return p->conn->security_state.session_key(p->conn, session_key);
+}
+
+
+/*
+ log a rpc packet in a format suitable for ndrdump. This is especially useful
+ for sealed packets, where ethereal cannot easily see the contents
+
+ this triggers on a debug level of >= 10
+*/
+_PUBLIC_ void dcerpc_log_packet(const struct ndr_interface_table *ndr,
+ uint32_t opnum, uint32_t flags,
+ DATA_BLOB *pkt)
+{
+ const int num_examples = 20;
+ int i;
+
+ if (DEBUGLEVEL < 10) return;
+
+ for (i=0;i<num_examples;i++) {
+ char *name=NULL;
+ asprintf(&name, "%s/rpclog/%s-%u.%d.%s",
+ lp_lockdir(global_loadparm), ndr->name, opnum, i,
+ (flags&NDR_IN)?"in":"out");
+ if (name == NULL) {
+ return;
+ }
+ if (!file_exist(name)) {
+ if (file_save(name, pkt->data, pkt->length)) {
+ DEBUG(10,("Logged rpc packet to %s\n", name));
+ }
+ free(name);
+ break;
+ }
+ free(name);
+ }
+}
+
+
+
+/*
+ create a secondary context from a primary connection
+
+ this uses dcerpc_alter_context() to create a new dcerpc context_id
+*/
+_PUBLIC_ NTSTATUS dcerpc_secondary_context(struct dcerpc_pipe *p,
+ struct dcerpc_pipe **pp2,
+ const struct ndr_interface_table *table)
+{
+ NTSTATUS status;
+ struct dcerpc_pipe *p2;
+
+ p2 = talloc_zero(p, struct dcerpc_pipe);
+ if (p2 == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ p2->conn = talloc_reference(p2, p->conn);
+ p2->request_timeout = p->request_timeout;
+
+ p2->context_id = ++p->conn->next_context_id;
+
+ p2->syntax = table->syntax_id;
+
+ p2->transfer_syntax = ndr_transfer_syntax;
+
+ p2->binding = talloc_reference(p2, p->binding);
+
+ status = dcerpc_alter_context(p2, p2, &p2->syntax, &p2->transfer_syntax);
+ if (!NT_STATUS_IS_OK(status)) {
+ talloc_free(p2);
+ return status;
+ }
+
+ *pp2 = p2;
+
+ return NT_STATUS_OK;
+}
git.samba.org / kai / samba.git / commitdiff