/* Unix SMB/CIFS implementation. dcerpc utility functions Copyright (C) Andrew Tridgell 2003 Copyright (C) Jelmer Vernooij 2004 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 2 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, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "includes.h" /* find the pipe name for a local IDL interface */ const char *idl_pipe_name(const char *uuid, uint32_t if_version) { int i; for (i=0;dcerpc_pipes[i];i++) { if (strcasecmp(dcerpc_pipes[i]->uuid, uuid) == 0 && dcerpc_pipes[i]->if_version == if_version) { return dcerpc_pipes[i]->name; } } return "UNKNOWN"; } /* find the number of calls defined by local IDL */ int idl_num_calls(const char *uuid, uint32_t if_version) { int i; for (i=0;dcerpc_pipes[i];i++) { if (strcasecmp(dcerpc_pipes[i]->uuid, uuid) == 0 && dcerpc_pipes[i]->if_version == if_version) { return dcerpc_pipes[i]->num_calls; } } return -1; } /* find a dcerpc interface by name */ const struct dcerpc_interface_table *idl_iface_by_name(const char *name) { int i; for (i=0;dcerpc_pipes[i];i++) { if (strcasecmp(dcerpc_pipes[i]->name, name) == 0) { return dcerpc_pipes[i]; } } return NULL; } /* find a dcerpc interface by uuid */ const struct dcerpc_interface_table *idl_iface_by_uuid(const char *uuid) { int i; for (i=0;dcerpc_pipes[i];i++) { if (strcasecmp(dcerpc_pipes[i]->uuid, uuid) == 0) { return dcerpc_pipes[i]; } } return NULL; } /* push a dcerpc_packet into a blob, potentially with auth info */ NTSTATUS dcerpc_push_auth(DATA_BLOB *blob, TALLOC_CTX *mem_ctx, struct dcerpc_packet *pkt, struct dcerpc_auth *auth_info) { NTSTATUS status; struct ndr_push *ndr; ndr = ndr_push_init_ctx(mem_ctx); if (!ndr) { return NT_STATUS_NO_MEMORY; } if (!(pkt->drep[0] & DCERPC_DREP_LE)) { ndr->flags |= LIBNDR_FLAG_BIGENDIAN; } if (auth_info) { pkt->auth_length = auth_info->credentials.length; } else { pkt->auth_length = 0; } status = ndr_push_dcerpc_packet(ndr, NDR_SCALARS|NDR_BUFFERS, pkt); if (!NT_STATUS_IS_OK(status)) { return status; } if (auth_info) { status = ndr_push_dcerpc_auth(ndr, NDR_SCALARS|NDR_BUFFERS, auth_info); } *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_protocols 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 }, }, }; static const struct { const char *name; uint32_t flag; } ncacn_options[] = { {"sign", DCERPC_SIGN}, {"seal", DCERPC_SEAL}, {"connect", DCERPC_CONNECT}, {"validate", DCERPC_DEBUG_VALIDATE_BOTH}, {"print", DCERPC_DEBUG_PRINT_BOTH}, {"padcheck", DCERPC_DEBUG_PAD_CHECK}, {"bigendian", DCERPC_PUSH_BIGENDIAN} }; /* form a binding string from a binding structure */ const char *dcerpc_binding_string(TALLOC_CTX *mem_ctx, const struct dcerpc_binding *b) { char *s = NULL; int i; const char *t_name=NULL; for (i=0;itransport) { t_name = transports[i].name; } } if (!t_name) { return NULL; } if (!uuid_all_zero(&b->object)) { s = talloc_asprintf(mem_ctx, "%s@", GUID_string(mem_ctx, &b->object)); } s = talloc_asprintf_append(s, "%s:", t_name); if (!s) return NULL; if (b->host) { s = talloc_asprintf_append(s, "%s", b->host); } if (!b->endpoint && !b->options && !b->flags) { return s; } s = talloc_asprintf_append(s, "["); if (b->endpoint) { s = talloc_asprintf_append(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(s, ",%s", b->options[i]); if (!s) return NULL; } for (i=0;iflags & ncacn_options[i].flag) { s = talloc_asprintf_append(s, ",%s", ncacn_options[i].name); if (!s) return NULL; } } s = talloc_asprintf_append(s, "]"); return s; } /* parse a binding string into a dcerpc_binding structure */ NTSTATUS dcerpc_parse_binding(TALLOC_CTX *mem_ctx, const char *s, struct dcerpc_binding *b) { char *options, *type; char *p; int i, j, comma_count; 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); if (NT_STATUS_IS_ERR(status)) { DEBUG(0, ("Failed parsing UUID\n")); return status; } s = p + 1; } else { ZERO_STRUCT(b->object); } b->object_version = 0; p = strchr(s, ':'); if (!p) { return NT_STATUS_INVALID_PARAMETER; } type = talloc_strndup(mem_ctx, s, PTR_DIFF(p, s)); if (!type) { return NT_STATUS_NO_MEMORY; } for (i=0;itransport = transports[i].transport; break; } } if (i==ARRAY_SIZE(transports)) { DEBUG(0,("Unknown dcerpc transport '%s'\n", type)); return NT_STATUS_INVALID_PARAMETER; } s = p+1; p = strchr(s, '['); if (p) { b->host = talloc_strndup(mem_ctx, 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(mem_ctx, s); options = NULL; } if (!b->host) { return NT_STATUS_NO_MEMORY; } b->options = NULL; b->flags = 0; b->endpoint = NULL; if (!options) { return NT_STATUS_OK; } comma_count = count_chars(options, ','); b->options = talloc_array_p(mem_ctx, 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(mem_ctx, 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;joptions[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; return NT_STATUS_OK; } const char *dcerpc_floor_get_rhs_data(TALLOC_CTX *mem_ctx, struct epm_floor *floor) { switch (floor->lhs.protocol) { case EPM_PROTOCOL_TCP: if (floor->rhs.tcp.port == 0) return NULL; return talloc_asprintf(mem_ctx, "%d", floor->rhs.tcp.port); case EPM_PROTOCOL_UDP: if (floor->rhs.udp.port == 0) return NULL; return talloc_asprintf(mem_ctx, "%d", floor->rhs.udp.port); case EPM_PROTOCOL_HTTP: if (floor->rhs.http.port == 0) return NULL; return talloc_asprintf(mem_ctx, "%d", floor->rhs.http.port); case EPM_PROTOCOL_IP: if (floor->rhs.ip.address == 0) { return NULL; } { struct in_addr in; in.s_addr = htonl(floor->rhs.ip.address); return talloc_strdup(mem_ctx, inet_ntoa(in)); } case EPM_PROTOCOL_NCACN: return NULL; case EPM_PROTOCOL_NCADG: return NULL; case EPM_PROTOCOL_SMB: if (strlen(floor->rhs.smb.unc) == 0) return NULL; return talloc_strdup(mem_ctx, floor->rhs.smb.unc); case EPM_PROTOCOL_PIPE: if (strlen(floor->rhs.pipe.path) == 0) return NULL; return talloc_strdup(mem_ctx, floor->rhs.pipe.path); case EPM_PROTOCOL_NETBIOS: if (strlen(floor->rhs.netbios.name) == 0) return NULL; return talloc_strdup(mem_ctx, floor->rhs.netbios.name); case EPM_PROTOCOL_NCALRPC: return NULL; case EPM_PROTOCOL_VINES_SPP: return talloc_asprintf(mem_ctx, "%d", floor->rhs.vines_spp.port); case EPM_PROTOCOL_VINES_IPC: return talloc_asprintf(mem_ctx, "%d", floor->rhs.vines_ipc.port); case EPM_PROTOCOL_STREETTALK: return talloc_strdup(mem_ctx, floor->rhs.streettalk.streettalk); case EPM_PROTOCOL_UNIX_DS: if (strlen(floor->rhs.unix_ds.path) == 0) return NULL; return talloc_strdup(mem_ctx, floor->rhs.unix_ds.path); case EPM_PROTOCOL_NULL: return NULL; } return NULL; } static NTSTATUS dcerpc_floor_set_rhs_data(TALLOC_CTX *mem_ctx, struct epm_floor *floor, const char *data) { switch (floor->lhs.protocol) { case EPM_PROTOCOL_TCP: floor->rhs.tcp.port = atoi(data); return NT_STATUS_OK; case EPM_PROTOCOL_UDP: floor->rhs.udp.port = atoi(data); return NT_STATUS_OK; case EPM_PROTOCOL_HTTP: floor->rhs.http.port = atoi(data); return NT_STATUS_OK; case EPM_PROTOCOL_IP: if (strlen(data) > 0) { floor->rhs.ip.address = ntohl(interpret_addr(data)); } else { floor->rhs.ip.address = 0; } return NT_STATUS_OK; case EPM_PROTOCOL_NCACN: floor->rhs.ncacn.minor_version = 0; return NT_STATUS_OK; case EPM_PROTOCOL_NCADG: floor->rhs.ncadg.minor_version = 0; return NT_STATUS_OK; case EPM_PROTOCOL_SMB: floor->rhs.smb.unc = talloc_strdup(mem_ctx, data); if (!floor->rhs.smb.unc) { return NT_STATUS_NO_MEMORY; } return NT_STATUS_OK; case EPM_PROTOCOL_PIPE: floor->rhs.pipe.path = talloc_strdup(mem_ctx, data); if (!floor->rhs.pipe.path) { return NT_STATUS_NO_MEMORY; } return NT_STATUS_OK; case EPM_PROTOCOL_NETBIOS: floor->rhs.netbios.name = talloc_strdup(mem_ctx, data); if (!floor->rhs.netbios.name) { return NT_STATUS_NO_MEMORY; } return NT_STATUS_OK; case EPM_PROTOCOL_NCALRPC: return NT_STATUS_OK; case EPM_PROTOCOL_VINES_SPP: floor->rhs.vines_spp.port = atoi(data); return NT_STATUS_OK; case EPM_PROTOCOL_VINES_IPC: floor->rhs.vines_ipc.port = atoi(data); return NT_STATUS_OK; case EPM_PROTOCOL_STREETTALK: floor->rhs.streettalk.streettalk = talloc_strdup(mem_ctx, data); if (!floor->rhs.streettalk.streettalk) { return NT_STATUS_NO_MEMORY; } return NT_STATUS_OK; case EPM_PROTOCOL_UNIX_DS: floor->rhs.unix_ds.path = talloc_strdup(mem_ctx, data); if (!floor->rhs.unix_ds.path) { return NT_STATUS_NO_MEMORY; } return NT_STATUS_OK; case EPM_PROTOCOL_NULL: return NT_STATUS_OK; } return NT_STATUS_NOT_SUPPORTED; } enum dcerpc_transport_t dcerpc_transport_by_tower(struct epm_tower *tower) { int i; /* Find a transport that matches this tower */ for (i=0;inum_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 -1; } NTSTATUS dcerpc_binding_from_tower(TALLOC_CTX *mem_ctx, struct epm_tower *tower, struct dcerpc_binding *binding) { ZERO_STRUCT(binding->object); binding->options = NULL; binding->host = NULL; binding->flags = 0; binding->transport = dcerpc_transport_by_tower(tower); if (binding->transport == -1) { return NT_STATUS_NOT_SUPPORTED; } if (tower->num_floors < 1) { return NT_STATUS_OK; } /* Set object uuid */ binding->object = tower->floors[0].lhs.info.uuid.uuid; binding->object_version = tower->floors[0].lhs.info.uuid.version; /* 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]); } return NT_STATUS_OK; } NTSTATUS dcerpc_binding_build_tower(TALLOC_CTX *mem_ctx, struct dcerpc_binding *binding, struct epm_tower *tower) { const enum epm_protocols *protseq; int num_protocols = -1, i; NTSTATUS status; /* Find transport */ for (i=0;itransport) { 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_p(mem_ctx, struct epm_floor, tower->num_floors); /* Floor 0 */ tower->floors[0].lhs.protocol = EPM_PROTOCOL_UUID; tower->floors[0].lhs.info.uuid.uuid = binding->object; tower->floors[0].lhs.info.uuid.version = binding->object_version; tower->floors[0].rhs.uuid.unknown = 0; /* Floor 1 */ tower->floors[1].lhs.protocol = EPM_PROTOCOL_UUID; tower->floors[1].lhs.info.uuid.version = NDR_GUID_VERSION; tower->floors[1].rhs.uuid.unknown = 0; status = GUID_from_string(NDR_GUID, &tower->floors[1].lhs.info.uuid.uuid); if (NT_STATUS_IS_ERR(status)) { return status; } /* 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.info.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) { status = dcerpc_floor_set_rhs_data(mem_ctx, &tower->floors[4], binding->host); if (NT_STATUS_IS_ERR(status)) { return status; } } return NT_STATUS_OK; } NTSTATUS dcerpc_epm_map_binding(TALLOC_CTX *mem_ctx, struct dcerpc_binding *binding, const char *uuid, uint_t version) { struct dcerpc_pipe *p; NTSTATUS status; struct epm_Map r; struct policy_handle handle; struct GUID guid; struct epm_twr_t twr, *twr_r; struct dcerpc_binding epmapper_binding; if (!strcmp(uuid, DCERPC_EPMAPPER_UUID)) { switch(binding->transport) { case NCACN_IP_TCP: binding->endpoint = talloc_asprintf(mem_ctx, "%d", EPMAPPER_PORT); return NT_STATUS_OK; case NCALRPC: binding->endpoint = EPMAPPER_IDENTIFIER; return NT_STATUS_OK; default: return NT_STATUS_NOT_SUPPORTED; } } ZERO_STRUCT(epmapper_binding); epmapper_binding.transport = binding->transport; epmapper_binding.host = binding->host; epmapper_binding.options = NULL; epmapper_binding.flags = 0; epmapper_binding.endpoint = NULL; status = dcerpc_pipe_connect_b(&p, &epmapper_binding, DCERPC_EPMAPPER_UUID, DCERPC_EPMAPPER_VERSION, NULL, NULL, NULL); if (!NT_STATUS_IS_OK(status)) { return status; } ZERO_STRUCT(handle); ZERO_STRUCT(guid); status = GUID_from_string(uuid, &binding->object); if (NT_STATUS_IS_ERR(status)) { return status; } binding->object_version = version; status = dcerpc_binding_build_tower(p, binding, &twr.tower); if (NT_STATUS_IS_ERR(status)) { return status; } /* with some nice pretty paper around it of course */ r.in.object = &guid; r.in.map_tower = &twr; r.in.entry_handle = &handle; r.in.max_towers = 1; r.out.entry_handle = &handle; status = dcerpc_epm_Map(p, p, &r); if (!NT_STATUS_IS_OK(status)) { dcerpc_pipe_close(p); return status; } if (r.out.result != 0 || r.out.num_towers != 1) { dcerpc_pipe_close(p); return NT_STATUS_PORT_UNREACHABLE; } twr_r = r.out.towers[0].twr; if (!twr_r) { dcerpc_pipe_close(p); return NT_STATUS_PORT_UNREACHABLE; } if (twr_r->tower.num_floors != twr.tower.num_floors || twr_r->tower.floors[3].lhs.protocol != twr.tower.floors[3].lhs.protocol) { dcerpc_pipe_close(p); return NT_STATUS_PORT_UNREACHABLE; } binding->endpoint = dcerpc_floor_get_rhs_data(mem_ctx, &twr_r->tower.floors[3]); dcerpc_pipe_close(p); return NT_STATUS_OK; } /* open a rpc connection to a rpc pipe on SMB using the binding structure to determine the endpoint and options */ static NTSTATUS dcerpc_pipe_connect_ncacn_np(struct dcerpc_pipe **p, struct dcerpc_binding *binding, const char *pipe_uuid, uint32_t pipe_version, const char *domain, const char *username, const char *password) { NTSTATUS status; BOOL retry; struct smbcli_state *cli; const char *pipe_name; TALLOC_CTX *mem_ctx = talloc_init("dcerpc_pipe_connect_ncacn_np"); if (!binding->endpoint) { const struct dcerpc_interface_table *table = idl_iface_by_uuid(pipe_uuid); struct dcerpc_binding default_binding; int i; if (!table) { DEBUG(0,("Unknown interface endpoint '%s'\n", pipe_uuid)); talloc_destroy(mem_ctx); return NT_STATUS_INVALID_PARAMETER; } /* 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) && default_binding.transport == NCACN_NP) { pipe_name = default_binding.endpoint; break; } } } else { pipe_name = binding->endpoint; } if (!strncasecmp(pipe_name, "/pipe/", 6) || !strncasecmp(pipe_name, "\\pipe\\", 6)) { pipe_name+=6; } if (pipe_name[0] != '\\') { pipe_name = talloc_asprintf(mem_ctx, "\\%s", pipe_name); } if (!username || !username[0] || (binding->flags & DCERPC_SCHANNEL_ANY)) { status = smbcli_full_connection(NULL, &cli, lp_netbios_name(), binding->host, NULL, "ipc$", "?????", "", "", NULL, 0, &retry); } else { status = smbcli_full_connection(NULL, &cli, lp_netbios_name(), binding->host, NULL, "ipc$", "?????", username, domain, password, 0, &retry); } if (!NT_STATUS_IS_OK(status)) { DEBUG(0,("Failed to connect to %s - %s\n", binding->host, nt_errstr(status))); talloc_destroy(mem_ctx); return status; } status = dcerpc_pipe_open_smb(p, cli->tree, pipe_name); if (!NT_STATUS_IS_OK(status)) { DEBUG(0,("Failed to open pipe %s - %s\n", pipe_name, nt_errstr(status))); smbcli_tdis(cli); smbcli_shutdown(cli); talloc_destroy(mem_ctx); return status; } talloc_destroy(mem_ctx); /* this ensures that the reference count is decremented so a pipe close will really close the link */ talloc_steal(*p, cli); (*p)->flags = binding->flags; /* remember the binding string for possible secondary connections */ (*p)->binding_string = dcerpc_binding_string((*p), binding); if (username && username[0] && (binding->flags & DCERPC_SCHANNEL_ANY)) { status = dcerpc_bind_auth_schannel(*p, pipe_uuid, pipe_version, domain, username, password); } else if (username && username[0] && (binding->flags & (DCERPC_CONNECT|DCERPC_SIGN|DCERPC_SEAL))) { status = dcerpc_bind_auth_ntlm(*p, pipe_uuid, pipe_version, domain, username, password); } else { status = dcerpc_bind_auth_none(*p, pipe_uuid, pipe_version); } if (!NT_STATUS_IS_OK(status)) { DEBUG(0,("Failed to bind to uuid %s - %s\n", pipe_uuid, nt_errstr(status))); dcerpc_pipe_close(*p); *p = NULL; return status; } return NT_STATUS_OK; } /* open a rpc connection to a rpc pipe on SMP using the binding structure to determine the endpoint and options */ static NTSTATUS dcerpc_pipe_connect_ncalrpc(struct dcerpc_pipe **p, struct dcerpc_binding *binding, const char *pipe_uuid, uint32_t pipe_version, const char *domain, const char *username, const char *password) { NTSTATUS status; TALLOC_CTX *mem_ctx = talloc_init("dcerpc_pipe_connect_ncalrpc"); /* Look up identifier using the epmapper */ if (!binding->endpoint) { status = dcerpc_epm_map_binding(mem_ctx, binding, pipe_uuid, pipe_version); if (!NT_STATUS_IS_OK(status)) { DEBUG(0,("Failed to map DCERPC/TCP NCALRPC identifier for '%s' - %s\n", pipe_uuid, nt_errstr(status))); talloc_destroy(mem_ctx); return status; } DEBUG(1,("Mapped to DCERPC/TCP identifier %s\n", binding->endpoint)); } status = dcerpc_pipe_open_pipe(p, binding->endpoint); if (!NT_STATUS_IS_OK(status)) { DEBUG(0,("Failed to open ncalrpc pipe '%s' - %s\n", binding->endpoint, nt_errstr(status))); talloc_destroy(mem_ctx); return status; } (*p)->flags = binding->flags; /* remember the binding string for possible secondary connections */ (*p)->binding_string = dcerpc_binding_string((*p), binding); if (username && username[0] && (binding->flags & DCERPC_SCHANNEL_ANY)) { status = dcerpc_bind_auth_schannel(*p, pipe_uuid, pipe_version, domain, username, password); } else if (username && username[0]) { status = dcerpc_bind_auth_ntlm(*p, pipe_uuid, pipe_version, domain, username, password); } else { status = dcerpc_bind_auth_none(*p, pipe_uuid, pipe_version); } if (!NT_STATUS_IS_OK(status)) { DEBUG(0,("Failed to bind to uuid %s - %s\n", pipe_uuid, nt_errstr(status))); dcerpc_pipe_close(*p); *p = NULL; talloc_destroy(mem_ctx); return status; } talloc_destroy(mem_ctx); return status; } /* open a rpc connection to a rpc pipe on SMP using the binding structure to determine the endpoint and options */ static NTSTATUS dcerpc_pipe_connect_ncacn_unix_stream(struct dcerpc_pipe **p, struct dcerpc_binding *binding, const char *pipe_uuid, uint32_t pipe_version, const char *domain, const char *username, const char *password) { NTSTATUS status; if (!binding->endpoint) { DEBUG(0, ("Path to unix socket not specified\n")); return NT_STATUS_INVALID_PARAMETER; } status = dcerpc_pipe_open_unix_stream(p, binding->endpoint); if (!NT_STATUS_IS_OK(status)) { DEBUG(0,("Failed to open unix socket %s - %s\n", binding->endpoint, nt_errstr(status))); return status; } (*p)->flags = binding->flags; /* remember the binding string for possible secondary connections */ (*p)->binding_string = dcerpc_binding_string((*p), binding); if (username && username[0] && (binding->flags & DCERPC_SCHANNEL_ANY)) { status = dcerpc_bind_auth_schannel(*p, pipe_uuid, pipe_version, domain, username, password); } else if (username && username[0]) { status = dcerpc_bind_auth_ntlm(*p, pipe_uuid, pipe_version, domain, username, password); } else { status = dcerpc_bind_auth_none(*p, pipe_uuid, pipe_version); } if (!NT_STATUS_IS_OK(status)) { DEBUG(0,("Failed to bind to uuid %s - %s\n", pipe_uuid, nt_errstr(status))); dcerpc_pipe_close(*p); *p = NULL; return status; } return status; } /* open a rpc connection to a rpc pipe on SMP using the binding structure to determine the endpoint and options */ static NTSTATUS dcerpc_pipe_connect_ncacn_ip_tcp(struct dcerpc_pipe **p, struct dcerpc_binding *binding, const char *pipe_uuid, uint32_t pipe_version, const char *domain, const char *username, const char *password) { NTSTATUS status; uint32_t port = 0; TALLOC_CTX *mem_ctx = talloc_init("connect_ncacn_ip_tcp"); if (!binding->endpoint) { status = dcerpc_epm_map_binding(mem_ctx, binding, pipe_uuid, pipe_version); if (!NT_STATUS_IS_OK(status)) { DEBUG(0,("Failed to map DCERPC/TCP port for '%s' - %s\n", pipe_uuid, nt_errstr(status))); return status; } DEBUG(1,("Mapped to DCERPC/TCP port %s\n", binding->endpoint)); } port = atoi(binding->endpoint); status = dcerpc_pipe_open_tcp(p, binding->host, port); if (!NT_STATUS_IS_OK(status)) { DEBUG(0,("Failed to connect to %s:%d\n", binding->host, port)); return status; } (*p)->flags = binding->flags; /* remember the binding string for possible secondary connections */ (*p)->binding_string = dcerpc_binding_string((*p), binding); if (username && username[0] && (binding->flags & DCERPC_SCHANNEL_ANY)) { status = dcerpc_bind_auth_schannel(*p, pipe_uuid, pipe_version, domain, username, password); } else if (username && username[0]) { status = dcerpc_bind_auth_ntlm(*p, pipe_uuid, pipe_version, domain, username, password); } else { status = dcerpc_bind_auth_none(*p, pipe_uuid, pipe_version); } if (!NT_STATUS_IS_OK(status)) { DEBUG(0,("Failed to bind to uuid %s - %s\n", pipe_uuid, nt_errstr(status))); dcerpc_pipe_close(*p); *p = NULL; return status; } return status; } /* open a rpc connection to a rpc pipe, using the specified binding structure to determine the endpoint and options */ NTSTATUS dcerpc_pipe_connect_b(struct dcerpc_pipe **p, struct dcerpc_binding *binding, const char *pipe_uuid, uint32_t pipe_version, const char *domain, const char *username, const char *password) { NTSTATUS status = NT_STATUS_INVALID_PARAMETER; switch (binding->transport) { case NCACN_NP: status = dcerpc_pipe_connect_ncacn_np(p, binding, pipe_uuid, pipe_version, domain, username, password); break; case NCACN_IP_TCP: status = dcerpc_pipe_connect_ncacn_ip_tcp(p, binding, pipe_uuid, pipe_version, domain, username, password); break; case NCACN_UNIX_STREAM: status = dcerpc_pipe_connect_ncacn_unix_stream(p, binding, pipe_uuid, pipe_version, domain, username, password); break; case NCALRPC: status = dcerpc_pipe_connect_ncalrpc(p, binding, pipe_uuid, pipe_version, domain, username, password); break; default: return NT_STATUS_NOT_SUPPORTED; } return status; } /* open a rpc connection to a rpc pipe, using the specified string binding to determine the endpoint and options */ NTSTATUS dcerpc_pipe_connect(struct dcerpc_pipe **p, const char *binding, const char *pipe_uuid, uint32_t pipe_version, const char *domain, const char *username, const char *password) { struct dcerpc_binding b; NTSTATUS status; TALLOC_CTX *mem_ctx; mem_ctx = talloc_init("dcerpc_pipe_connect"); if (!mem_ctx) return NT_STATUS_NO_MEMORY; status = dcerpc_parse_binding(mem_ctx, binding, &b); if (!NT_STATUS_IS_OK(status)) { DEBUG(0,("Failed to parse dcerpc binding '%s'\n", binding)); talloc_destroy(mem_ctx); return status; } DEBUG(3,("Using binding %s\n", dcerpc_binding_string(mem_ctx, &b))); status = dcerpc_pipe_connect_b(p, &b, pipe_uuid, pipe_version, domain, username, password); talloc_destroy(mem_ctx); return status; } /* create a secondary dcerpc connection from a primary connection if the primary is a SMB connection then the secondary connection will be on the same SMB connection, but use a new fnum */ NTSTATUS dcerpc_secondary_connection(struct dcerpc_pipe *p, struct dcerpc_pipe **p2, const char *pipe_name, const char *pipe_uuid, uint32_t pipe_version) { struct smbcli_tree *tree; NTSTATUS status = NT_STATUS_INVALID_PARAMETER; struct dcerpc_binding b; switch (p->transport.transport) { case NCACN_NP: tree = dcerpc_smb_tree(p); if (!tree) { return NT_STATUS_INVALID_PARAMETER; } status = dcerpc_pipe_open_smb(p2, tree, pipe_name); break; case NCACN_IP_TCP: status = dcerpc_parse_binding(p, p->binding_string, &b); if (!NT_STATUS_IS_OK(status)) { return status; } b.flags &= ~DCERPC_AUTH_OPTIONS; status = dcerpc_pipe_connect_ncacn_ip_tcp(p2, &b, pipe_uuid, pipe_version, NULL, NULL, NULL); break; default: return NT_STATUS_NOT_SUPPORTED; } if (!NT_STATUS_IS_OK(status)) { return status; } (*p2)->flags = p->flags; status = dcerpc_bind_auth_none(*p2, pipe_uuid, pipe_version); if (!NT_STATUS_IS_OK(status)) { return status; } return NT_STATUS_OK; } NTSTATUS dcerpc_generic_session_key(struct dcerpc_pipe *p, 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 */ NTSTATUS dcerpc_fetch_session_key(struct dcerpc_pipe *p, DATA_BLOB *session_key) { return p->security_state.session_key(p, 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 */ void dcerpc_log_packet(const struct dcerpc_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;iname, opnum, i, (flags&NDR_IN)?"in":"out"); if (name == NULL) { return; } if (!file_exist(name, NULL)) { if (file_save(name, pkt->data, pkt->length)) { DEBUG(10,("Logged rpc packet to %s\n", name)); } free(name); break; } free(name); } }