+
+
+/*
+ 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 *part1, *part2, *part3;
+ char *p;
+ int i, j, comma_count;
+ const struct {
+ const char *name;
+ enum dcerpc_transport_t transport;
+ } transports[] = {
+ {"ncacn_np", NCACN_NP},
+ {"ncacn_ip_tcp", NCACN_IP_TCP}
+ };
+ const struct {
+ const char *name;
+ uint32 flag;
+ } options[] = {
+ {"sign", DCERPC_SIGN},
+ {"seal", DCERPC_SEAL},
+ {"validate", DCERPC_DEBUG_VALIDATE_BOTH}
+ };
+
+ p = strchr(s, ':');
+ if (!p) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ part1 = talloc_strndup(mem_ctx, s, PTR_DIFF(p, s));
+ if (!part1) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ s = p+1;
+
+ p = strchr(s, ':');
+ if (!p) {
+ part2 = talloc_strdup(mem_ctx, s);
+ part3 = NULL;
+ } else {
+ part2 = talloc_strndup(mem_ctx, s, PTR_DIFF(p, s));
+ part3 = talloc_strdup(mem_ctx, p+1);
+ }
+ if (!part2) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ for (i=0;i<ARRAY_SIZE(transports);i++) {
+ if (strcasecmp(part1, transports[i].name) == 0) {
+ b->transport = transports[i].transport;
+ break;
+ }
+ }
+ if (i==ARRAY_SIZE(transports)) {
+ DEBUG(1,("Unknown dcerpc transport '%s'\n", part1));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ b->host = part2;
+ b->options = NULL;
+ b->flags = 0;
+
+ if (!part3) {
+ return NT_STATUS_OK;
+ }
+
+ /* the [] brackets are optional */
+ if (*part3 == '[' && part3[strlen(part3)-1] == ']') {
+ part3++;
+ part3[strlen(part3)-1] = 0;
+ }
+
+ comma_count = count_chars(part3, ',');
+ 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(part3, ',')); i++) {
+ b->options[i] = talloc_strndup(mem_ctx, part3, PTR_DIFF(p, part3));
+ if (!b->options[i]) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ part3 = p+1;
+ }
+ b->options[i] = part3;
+ 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(options);j++) {
+ if (strcasecmp(options[j].name, b->options[i]) == 0) {
+ b->flags |= options[j].flag;
+ break;
+ }
+ }
+ }
+
+ 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_ncacn_np(struct dcerpc_pipe **p,
+ struct dcerpc_binding *binding,
+ const char *pipe_uuid,
+ uint32 pipe_version,
+ const char *domain,
+ const char *username,
+ const char *password)
+{
+ NTSTATUS status;
+ BOOL retry;
+ struct cli_state *cli;
+ const char *pipe_name;
+
+ if (!binding->options || !binding->options[0]) {
+ const struct dcerpc_interface_table *table = idl_iface_by_uuid(pipe_uuid);
+ if (!table) {
+ DEBUG(0,("Unknown interface endpoint '%s'\n", pipe_uuid));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ pipe_name = table->endpoints->names[0];
+ } else {
+ pipe_name = binding->options[0];
+ }
+
+ if (strncasecmp(pipe_name, "\\pipe\\", 6) == 0) {
+ pipe_name += 6;
+ }
+ if (strncasecmp(pipe_name, "/pipe/", 6) == 0) {
+ pipe_name += 6;
+ }
+
+ status = cli_full_connection(&cli, lp_netbios_name(),
+ binding->host, NULL,
+ "ipc$", "?????",
+ username, username[0]?domain:"",
+ password, 0, &retry);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ status = dcerpc_pipe_open_smb(p, cli->tree, pipe_name);
+ if (!NT_STATUS_IS_OK(status)) {
+ cli_tdis(cli);
+ cli_shutdown(cli);
+ return status;
+ }
+
+ /* this ensures that the reference count is decremented so
+ a pipe close will really close the link */
+ cli_tree_close(cli->tree);
+
+ (*p)->flags = binding->flags;
+
+ if (binding->flags & (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)) {
+ dcerpc_pipe_close(*p);
+ 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_ncacn_ip_tcp(struct dcerpc_pipe **p,
+ struct dcerpc_binding *binding,
+ const char *pipe_uuid,
+ uint32 pipe_version,
+ const char *domain,
+ const char *username,
+ const char *password)
+{
+ NTSTATUS status;
+ uint32 port = 0;
+
+ if (binding->options && binding->options[0]) {
+ port = atoi(binding->options[0]);
+ }
+
+ if (port == 0) {
+ status = dcerpc_epm_map_tcp_port(binding->host,
+ pipe_uuid, pipe_version,
+ &port);
+ 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 %u\n", port));
+ }
+
+ status = dcerpc_pipe_open_tcp(p, binding->host, port);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ /* it doesn't seem to work to do a null NTLMSSP session without either sign
+ or seal, so force signing if we are doing ntlmssp */
+ if (username[0] && !(binding->flags & (DCERPC_SIGN|DCERPC_SEAL))) {
+ binding->flags |= DCERPC_SIGN;
+ }
+
+ (*p)->flags = binding->flags;
+
+ if (!(binding->flags & (DCERPC_SIGN|DCERPC_SEAL)) && !username[0]) {
+ status = dcerpc_bind_auth_none(*p, pipe_uuid, pipe_version);
+ } else {
+ status = dcerpc_bind_auth_ntlm(*p, pipe_uuid, pipe_version,
+ domain, username, password);
+ }
+
+ if (!NT_STATUS_IS_OK(status)) {
+ dcerpc_pipe_close(*p);
+ 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 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;
+ }
+
+ 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 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)) {
+ talloc_destroy(mem_ctx);
+ return status;
+ }
+
+ status = dcerpc_pipe_connect_b(p, &b, pipe_uuid, pipe_version, domain, username, password);
+
+ talloc_destroy(mem_ctx);
+ return status;
+}
git.samba.org / samba.git / blobdiff