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-rw-r--r--source4/librpc/rpc/dcerpc_connect.c690
-rw-r--r--source4/librpc/rpc/dcerpc_schannel.c385
-rw-r--r--source4/librpc/rpc/dcerpc_util.c539
3 files changed, 1233 insertions, 381 deletions
diff --git a/source4/librpc/rpc/dcerpc_connect.c b/source4/librpc/rpc/dcerpc_connect.c
index defebe4b15..f73a4de2be 100644
--- a/source4/librpc/rpc/dcerpc_connect.c
+++ b/source4/librpc/rpc/dcerpc_connect.c
@@ -43,7 +43,7 @@ struct pipe_np_smb_state {
/*
Stage 3 of ncacn_np_smb: Named pipe opened (or not)
*/
-void continue_pipe_open_smb(struct composite_context *ctx)
+static void continue_pipe_open_smb(struct composite_context *ctx)
{
struct composite_context *c = talloc_get_type(ctx->async.private_data,
struct composite_context);
@@ -52,9 +52,8 @@ void continue_pipe_open_smb(struct composite_context *ctx)
/* receive result of named pipe open request on smb */
c->status = dcerpc_pipe_open_smb_recv(ctx);
- if (!NT_STATUS_IS_OK(c->status)) {
+ if (!composite_is_ok(c)) {
DEBUG(0,("Failed to open pipe %s - %s\n", s->io.pipe_name, nt_errstr(c->status)));
- composite_error(c, c->status);
return;
}
@@ -64,7 +63,7 @@ void continue_pipe_open_smb(struct composite_context *ctx)
/*
Stage 2 of ncacn_np_smb: Open a named pipe after successful smb connection
*/
-void continue_smb_connect(struct composite_context *ctx)
+static void continue_smb_connect(struct composite_context *ctx)
{
struct composite_context *open_ctx;
struct composite_context *c = talloc_get_type(ctx->async.private_data,
@@ -74,9 +73,8 @@ void continue_smb_connect(struct composite_context *ctx)
/* receive result of smb connect request */
c->status = smb_composite_connect_recv(ctx, c);
- if (!NT_STATUS_IS_OK(c->status)) {
+ if (!composite_is_ok(c)) {
DEBUG(0,("Failed to connect to %s - %s\n", s->io.binding->host, nt_errstr(c->status)));
- composite_error(c, c->status);
return;
}
@@ -86,10 +84,7 @@ void continue_smb_connect(struct composite_context *ctx)
/* send named pipe open request */
open_ctx = dcerpc_pipe_open_smb_send(s->io.pipe->conn, s->tree, s->io.pipe_name);
- if (open_ctx == NULL) {
- composite_error(c, NT_STATUS_NO_MEMORY);
- return;
- }
+ if (composite_nomem(open_ctx, c)) return;
composite_continue(c, open_ctx, continue_pipe_open_smb, c);
}
@@ -112,10 +107,7 @@ struct composite_context *dcerpc_pipe_connect_ncacn_np_smb_send(TALLOC_CTX *mem_
if (c == NULL) return NULL;
s = talloc_zero(c, struct pipe_np_smb_state);
- if (s == NULL) {
- composite_error(c, NT_STATUS_NO_MEMORY);
- goto done;
- }
+ if (composite_nomem(s, c)) return c;
c->state = COMPOSITE_STATE_IN_PROGRESS;
c->private_data = s;
@@ -133,6 +125,9 @@ struct composite_context *dcerpc_pipe_connect_ncacn_np_smb_send(TALLOC_CTX *mem_
conn->in.service_type = NULL;
conn->in.workgroup = lp_workgroup();
+ /* verify if called_name has been allocated when uppercasing */
+ if (composite_nomem(conn->in.called_name, c)) return c;
+
/*
* provide proper credentials - user supplied, but allow a
* fallback to anonymous if this is an schannel connection
@@ -148,14 +143,9 @@ struct composite_context *dcerpc_pipe_connect_ncacn_np_smb_send(TALLOC_CTX *mem_
/* send smb connect request */
conn_req = smb_composite_connect_send(conn, s->io.pipe->conn, s->io.pipe->conn->event_ctx);
- if (!conn_req) {
- composite_error(c, NT_STATUS_NO_MEMORY);
- goto done;
- }
+ if (composite_nomem(conn_req, c)) return c;
composite_continue(c, conn_req, continue_smb_connect, c);
-
-done:
return c;
}
@@ -193,7 +183,7 @@ struct pipe_np_smb2_state {
/*
Stage 3 of ncacn_np_smb: Named pipe opened (or not)
*/
-void continue_pipe_open_smb2(struct composite_context *ctx)
+static void continue_pipe_open_smb2(struct composite_context *ctx)
{
struct composite_context *c = talloc_get_type(ctx->async.private_data,
struct composite_context);
@@ -202,9 +192,8 @@ void continue_pipe_open_smb2(struct composite_context *ctx)
/* receive result of named pipe open request on smb2 */
c->status = dcerpc_pipe_open_smb2_recv(ctx);
- if (!NT_STATUS_IS_OK(c->status)) {
+ if (!composite_is_ok(c)) {
DEBUG(0,("Failed to open pipe %s - %s\n", s->io.pipe_name, nt_errstr(c->status)));
- composite_error(c, c->status);
return;
}
@@ -215,7 +204,7 @@ void continue_pipe_open_smb2(struct composite_context *ctx)
/*
Stage 2 of ncacn_np_smb2: Open a named pipe after successful smb2 connection
*/
-void continue_smb2_connect(struct composite_context *ctx)
+static void continue_smb2_connect(struct composite_context *ctx)
{
struct composite_context *open_req;
struct composite_context *c = talloc_get_type(ctx->async.private_data,
@@ -225,9 +214,8 @@ void continue_smb2_connect(struct composite_context *ctx)
/* receive result of smb2 connect request */
c->status = smb2_connect_recv(ctx, c, &s->tree);
- if (!NT_STATUS_IS_OK(c->status)) {
+ if (!composite_is_ok(c)) {
DEBUG(0,("Failed to connect to %s - %s\n", s->io.binding->host, nt_errstr(c->status)));
- composite_error(c, c->status);
return;
}
@@ -236,10 +224,7 @@ void continue_smb2_connect(struct composite_context *ctx)
/* send named pipe open request */
open_req = dcerpc_pipe_open_smb2_send(s->io.pipe->conn, s->tree, s->io.pipe_name);
- if (open_req == NULL) {
- composite_error(c, NT_STATUS_NO_MEMORY);
- return;
- }
+ if (composite_nomem(open_req, c)) return;
composite_continue(c, open_req, continue_pipe_open_smb2, c);
}
@@ -261,10 +246,7 @@ struct composite_context *dcerpc_pipe_connect_ncacn_np_smb2_send(TALLOC_CTX *mem
if (c == NULL) return NULL;
s = talloc_zero(c, struct pipe_np_smb2_state);
- if (s == NULL) {
- composite_error(c, NT_STATUS_NO_MEMORY);
- goto done;
- }
+ if (composite_nomem(s, c)) return c;
c->state = COMPOSITE_STATE_IN_PROGRESS;
c->private_data = s;
@@ -278,10 +260,7 @@ struct composite_context *dcerpc_pipe_connect_ncacn_np_smb2_send(TALLOC_CTX *mem
*/
if (s->io.binding->flags & DCERPC_SCHANNEL) {
s->io.creds = cli_credentials_init(mem_ctx);
- if (s->io.creds) {
- composite_error(c, NT_STATUS_NO_MEMORY);
- goto done;
- }
+ if (composite_nomem(s->io.creds, c)) return c;
cli_credentials_set_anonymous(s->io.creds);
cli_credentials_guess(s->io.creds);
@@ -290,14 +269,10 @@ struct composite_context *dcerpc_pipe_connect_ncacn_np_smb2_send(TALLOC_CTX *mem
/* send smb2 connect request */
conn_req = smb2_connect_send(mem_ctx, s->io.binding->host, "IPC$", s->io.creds,
c->event_ctx);
- if (conn_req == NULL) {
- composite_error(c, NT_STATUS_NO_MEMORY);
- goto done;
- }
+ if (composite_nomem(conn_req, c)) return c;
composite_continue(c, conn_req, continue_smb2_connect, c);
-done:
return c;
}
@@ -336,7 +311,7 @@ struct pipe_ip_tcp_state {
/*
Stage 2 of ncacn_ip_tcp: rpc pipe opened (or not)
*/
-void continue_pipe_open_ncacn_ip_tcp(struct composite_context *ctx)
+static void continue_pipe_open_ncacn_ip_tcp(struct composite_context *ctx)
{
struct composite_context *c = talloc_get_type(ctx->async.private_data,
struct composite_context);
@@ -345,10 +320,9 @@ void continue_pipe_open_ncacn_ip_tcp(struct composite_context *ctx)
/* receive result of named pipe open request on tcp/ip */
c->status = dcerpc_pipe_open_tcp_recv(ctx);
- if (!NT_STATUS_IS_OK(c->status)) {
+ if (!composite_is_ok(c)) {
DEBUG(0,("Failed to connect to %s:%d - %s\n", s->host, s->port,
nt_errstr(c->status)));
- composite_error(c, c->status);
return;
}
@@ -372,10 +346,7 @@ struct composite_context* dcerpc_pipe_connect_ncacn_ip_tcp_send(TALLOC_CTX *mem_
if (c == NULL) return NULL;
s = talloc_zero(c, struct pipe_ip_tcp_state);
- if (s == NULL) {
- composite_error(c, NT_STATUS_NO_MEMORY);
- goto done;
- }
+ if (composite_nomem(s, c)) return c;
c->state = COMPOSITE_STATE_IN_PROGRESS;
c->private_data = s;
@@ -388,13 +359,9 @@ struct composite_context* dcerpc_pipe_connect_ncacn_ip_tcp_send(TALLOC_CTX *mem_
/* send pipe open request on tcp/ip */
pipe_req = dcerpc_pipe_open_tcp_send(s->io.pipe->conn, s->host, s->port);
- if (pipe_req == NULL) {
- composite_error(c, NT_STATUS_NO_MEMORY);
- goto done;
- }
+ if (composite_nomem(pipe_req, c)) return c;
composite_continue(c, pipe_req, continue_pipe_open_ncacn_ip_tcp, c);
-done:
return c;
}
@@ -432,7 +399,7 @@ struct pipe_unix_state {
/*
Stage 2 of ncacn_unix: rpc pipe opened (or not)
*/
-void continue_pipe_open_ncacn_unix_stream(struct composite_context *ctx)
+static void continue_pipe_open_ncacn_unix_stream(struct composite_context *ctx)
{
struct composite_context *c = talloc_get_type(ctx->async.private_data,
struct composite_context);
@@ -441,10 +408,9 @@ void continue_pipe_open_ncacn_unix_stream(struct composite_context *ctx)
/* receive result of pipe open request on unix socket */
c->status = dcerpc_pipe_open_unix_stream_recv(ctx);
- if (!NT_STATUS_IS_OK(c->status)) {
+ if (!composite_is_ok(c)) {
DEBUG(0,("Failed to open unix socket %s - %s\n",
s->io.binding->endpoint, nt_errstr(c->status)));
- composite_error(c, c->status);
return;
}
@@ -468,10 +434,7 @@ struct composite_context* dcerpc_pipe_connect_ncacn_unix_stream_send(TALLOC_CTX
if (c == NULL) return NULL;
s = talloc_zero(c, struct pipe_unix_state);
- if (s == NULL) {
- composite_error(c, NT_STATUS_NO_MEMORY);
- goto done;
- }
+ if (composite_nomem(s, c)) return c;
c->state = COMPOSITE_STATE_IN_PROGRESS;
c->private_data = s;
@@ -484,20 +447,16 @@ struct composite_context* dcerpc_pipe_connect_ncacn_unix_stream_send(TALLOC_CTX
if (!io->binding->endpoint) {
DEBUG(0, ("Path to unix socket not specified\n"));
composite_error(c, NT_STATUS_INVALID_PARAMETER);
- goto done;
+ return c;
}
s->path = talloc_strdup(c, io->binding->endpoint); /* path is a binding endpoint here */
/* send pipe open request on unix socket */
pipe_req = dcerpc_pipe_open_unix_stream_send(s->io.pipe->conn, s->path);
- if (pipe_req == NULL) {
- composite_error(c, NT_STATUS_NO_MEMORY);
- goto done;
- }
+ if (composite_nomem(pipe_req, c)) return c;
composite_continue(c, pipe_req, continue_pipe_open_ncacn_unix_stream, c);
-done:
return c;
}
@@ -534,7 +493,7 @@ struct pipe_ncalrpc_state {
/*
Stage 2 of ncalrpc: rpc pipe opened (or not)
*/
-void continue_pipe_open_ncalrpc(struct composite_context *ctx)
+static void continue_pipe_open_ncalrpc(struct composite_context *ctx)
{
struct composite_context *c = talloc_get_type(ctx->async.private_data,
struct composite_context);
@@ -543,10 +502,9 @@ void continue_pipe_open_ncalrpc(struct composite_context *ctx)
/* receive result of pipe open request on ncalrpc */
c->status = dcerpc_pipe_connect_ncalrpc_recv(ctx);
- if (!NT_STATUS_IS_OK(c->status)) {
+ if (!composite_is_ok(c)) {
DEBUG(0,("Failed to open ncalrpc pipe '%s' - %s\n", s->io.binding->endpoint,
nt_errstr(c->status)));
- composite_error(c, c->status);
return;
}
@@ -570,10 +528,7 @@ struct composite_context* dcerpc_pipe_connect_ncalrpc_send(TALLOC_CTX *mem_ctx,
if (c == NULL) return NULL;
s = talloc_zero(c, struct pipe_ncalrpc_state);
- if (s == NULL) {
- composite_error(c, NT_STATUS_NO_MEMORY);
- goto done;
- }
+ if (composite_nomem(s, c)) return c;
c->state = COMPOSITE_STATE_IN_PROGRESS;
c->private_data = s;
@@ -584,13 +539,9 @@ struct composite_context* dcerpc_pipe_connect_ncalrpc_send(TALLOC_CTX *mem_ctx,
/* send pipe open request */
pipe_req = dcerpc_pipe_open_pipe_send(s->io.pipe->conn, s->io.binding->endpoint);
- if (pipe_req == NULL) {
- composite_error(c, NT_STATUS_NO_MEMORY);
- goto done;
- }
+ if (composite_nomem(pipe_req, c)) return c;
composite_continue(c, pipe_req, continue_pipe_open_ncalrpc, c);
-done:
return c;
}
@@ -616,3 +567,582 @@ NTSTATUS dcerpc_pipe_connect_ncalrpc(TALLOC_CTX *mem_ctx,
struct composite_context *c = dcerpc_pipe_connect_ncalrpc_send(mem_ctx, io);
return dcerpc_pipe_connect_ncalrpc_recv(c);
}
+
+
+struct pipe_connect_state {
+ struct dcerpc_pipe *pipe;
+ struct dcerpc_binding *binding;
+ const struct dcerpc_interface_table *table;
+ struct cli_credentials *credentials;
+};
+
+
+static void continue_map_binding(struct composite_context *ctx);
+static void continue_connect(struct composite_context *c, struct pipe_connect_state *s);
+static void continue_pipe_connect_ncacn_np_smb2(struct composite_context *ctx);
+static void continue_pipe_connect_ncacn_np_smb(struct composite_context *ctx);
+static void continue_pipe_connect_ncacn_ip_tcp(struct composite_context *ctx);
+static void continue_pipe_connect_ncacn_unix(struct composite_context *ctx);
+static void continue_pipe_connect_ncalrpc(struct composite_context *ctx);
+static void continue_pipe_connect(struct composite_context *c, struct pipe_connect_state *s);
+static void continue_pipe_auth(struct composite_context *ctx);
+
+
+static void continue_map_binding(struct composite_context *ctx)
+{
+ struct composite_context *c = talloc_get_type(ctx->async.private_data,
+ struct composite_context);
+ struct pipe_connect_state *s = talloc_get_type(c->private_data,
+ struct pipe_connect_state);
+
+ c->status = dcerpc_epm_map_binding_recv(ctx);
+ if (!composite_is_ok(c)) {
+ DEBUG(0,("Failed to map DCERPC endpoint for '%s' - %s\n",
+ GUID_string(c, &s->table->uuid), nt_errstr(c->status)));
+ return;
+ }
+
+ DEBUG(2,("Mapped to DCERPC endpoint %s\n", s->binding->endpoint));
+
+ continue_connect(c, s);
+}
+
+
+static void continue_connect(struct composite_context *c, struct pipe_connect_state *s)
+{
+ struct dcerpc_pipe_connect pc;
+
+ /* potential exits to another stage by sending an async request */
+ struct composite_context *ncacn_np_smb2_req;
+ struct composite_context *ncacn_np_smb_req;
+ struct composite_context *ncacn_ip_tcp_req;
+ struct composite_context *ncacn_unix_req;
+ struct composite_context *ncalrpc_req;
+
+ /* dcerpc pipe connect input parameters */
+ pc.pipe = s->pipe;
+ pc.binding = s->binding;
+ pc.interface = s->table;
+ pc.creds = s->credentials;
+
+ switch (s->binding->transport) {
+ case NCACN_NP:
+ if (pc.binding->flags & DCERPC_SMB2) {
+ /* new varient of SMB a.k.a. SMB2 */
+ ncacn_np_smb2_req = dcerpc_pipe_connect_ncacn_np_smb2_send(c, &pc);
+ if (composite_nomem(ncacn_np_smb2_req, c)) return;
+
+ composite_continue(c, ncacn_np_smb2_req, continue_pipe_connect_ncacn_np_smb2, c);
+ return;
+
+ } else {
+ /* good old ordinary SMB */
+ ncacn_np_smb_req = dcerpc_pipe_connect_ncacn_np_smb_send(c, &pc);
+ if (composite_nomem(ncacn_np_smb_req, c)) return;
+
+ composite_continue(c, ncacn_np_smb_req, continue_pipe_connect_ncacn_np_smb, c);
+ return;
+ }
+ break;
+
+ case NCACN_IP_TCP:
+ ncacn_ip_tcp_req = dcerpc_pipe_connect_ncacn_ip_tcp_send(c, &pc);
+ if (composite_nomem(ncacn_ip_tcp_req, c)) return;
+
+ composite_continue(c, ncacn_ip_tcp_req, continue_pipe_connect_ncacn_ip_tcp, c);
+ return;
+
+ case NCACN_UNIX_STREAM:
+ ncacn_unix_req = dcerpc_pipe_connect_ncacn_unix_stream_send(c, &pc);
+ if (composite_nomem(ncacn_unix_req, c)) return;
+
+ composite_continue(c, ncacn_unix_req, continue_pipe_connect_ncacn_unix, c);
+ return;
+
+ case NCALRPC:
+ ncalrpc_req = dcerpc_pipe_connect_ncalrpc_send(c, &pc);
+ if (composite_nomem(ncalrpc_req, c)) return;
+
+ composite_continue(c, ncalrpc_req, continue_pipe_connect_ncalrpc, c);
+ return;
+
+ default:
+ composite_error(c, NT_STATUS_NOT_SUPPORTED);
+ }
+}
+
+
+static void continue_pipe_connect_ncacn_np_smb2(struct composite_context *ctx)
+{
+ struct composite_context *c = talloc_get_type(ctx->async.private_data,
+ struct composite_context);
+ struct pipe_connect_state *s = talloc_get_type(c->private_data,
+ struct pipe_connect_state);
+
+ c->status = dcerpc_pipe_connect_ncacn_np_smb2_recv(ctx);
+ if (!composite_is_ok(c)) return;
+
+ continue_pipe_connect(c, s);
+}
+
+
+static void continue_pipe_connect_ncacn_np_smb(struct composite_context *ctx)
+{
+ struct composite_context *c = talloc_get_type(ctx->async.private_data,
+ struct composite_context);
+ struct pipe_connect_state *s = talloc_get_type(c->private_data,
+ struct pipe_connect_state);
+
+ c->status = dcerpc_pipe_connect_ncacn_np_smb_recv(ctx);
+ if (!composite_is_ok(c)) return;
+
+ continue_pipe_connect(c, s);
+}
+
+
+static void continue_pipe_connect_ncacn_ip_tcp(struct composite_context *ctx)
+{
+ struct composite_context *c = talloc_get_type(ctx->async.private_data,
+ struct composite_context);
+ struct pipe_connect_state *s = talloc_get_type(c->private_data,
+ struct pipe_connect_state);
+
+ c->status = dcerpc_pipe_connect_ncacn_ip_tcp_recv(ctx);
+ if (!composite_is_ok(c)) return;
+
+ continue_pipe_connect(c, s);
+}
+
+
+static void continue_pipe_connect_ncacn_unix(struct composite_context *ctx)
+{
+ struct composite_context *c = talloc_get_type(ctx->async.private_data,
+ struct composite_context);
+ struct pipe_connect_state *s = talloc_get_type(c->private_data,
+ struct pipe_connect_state);
+
+ c->status = dcerpc_pipe_connect_ncacn_unix_stream_recv(ctx);
+ if (!composite_is_ok(c)) return;
+
+ continue_pipe_connect(c, s);
+}
+
+
+static void continue_pipe_connect_ncalrpc(struct composite_context *ctx)
+{
+ struct composite_context *c = talloc_get_type(ctx->async.private_data,
+ struct composite_context);
+ struct pipe_connect_state *s = talloc_get_type(c->private_data,
+ struct pipe_connect_state);
+
+ c->status = dcerpc_pipe_connect_ncalrpc_recv(ctx);
+ if (!composite_is_ok(c)) return;
+
+ continue_pipe_connect(c, s);
+}
+
+
+static void continue_pipe_connect(struct composite_context *c, struct pipe_connect_state *s)
+{
+ struct composite_context *auth_bind_req;
+
+ s->pipe->binding = s->binding;
+ if (!talloc_reference(s->pipe, s->binding)) {
+ composite_error(c, NT_STATUS_NO_MEMORY);
+ return;
+ }
+
+ auth_bind_req = dcerpc_pipe_auth_send(s->pipe, s->binding, s->table,
+ s->credentials);
+ if (composite_nomem(auth_bind_req, c)) return;
+
+ composite_continue(c, auth_bind_req, continue_pipe_auth, c);
+}
+
+
+static void continue_pipe_auth(struct composite_context *ctx)
+{
+ struct composite_context *c = talloc_get_type(ctx->async.private_data,
+ struct composite_context);
+
+ c->status = dcerpc_pipe_auth_recv(ctx);
+ if (!composite_is_ok(c)) return;
+
+ composite_done(c);
+}
+
+
+struct composite_context* dcerpc_pipe_connect_b_send(TALLOC_CTX *parent_ctx,
+ struct dcerpc_pipe **pp,
+ struct dcerpc_binding *binding,
+ const struct dcerpc_interface_table *table,
+ struct cli_credentials *credentials,
+ struct event_context *ev)
+{
+ struct composite_context *c;
+ struct pipe_connect_state *s;
+
+ struct composite_context *binding_req;
+
+ /* composite context allocation and setup */
+ c = talloc_zero(parent_ctx, struct composite_context);
+ if (c == NULL) return NULL;
+
+ s = talloc_zero(c, struct pipe_connect_state);
+ if (composite_nomem(s, c)) return c;
+
+ c->state = COMPOSITE_STATE_IN_PROGRESS;
+ c->private_data = s;
+
+ (*pp) = NULL;
+
+ /* initialise dcerpc pipe structure */
+ s->pipe = dcerpc_pipe_init(c, ev);
+ if (composite_nomem(s->pipe, c)) return c;
+
+ c->event_ctx = s->pipe->conn->event_ctx;
+ (*pp) = s->pipe;
+
+ s->binding = binding;
+ s->table = table;
+ s->credentials = credentials;
+
+ switch (s->binding->transport) {
+ case NCACN_NP:
+ case NCACN_IP_TCP:
+ case NCALRPC:
+ if (!s->binding->endpoint) {
+ binding_req = dcerpc_epm_map_binding_send(c, s->binding, s->table,
+ s->pipe->conn->event_ctx);
+ composite_continue(c, binding_req, continue_map_binding, c);
+ return c;
+ }
+
+ default:
+ break;
+ }
+
+ continue_connect(c, s);
+ return c;
+}
+
+
+NTSTATUS dcerpc_pipe_connect_b_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
+ struct dcerpc_pipe **p)
+{
+ NTSTATUS status;
+ struct pipe_connect_state *s;
+
+ status = composite_wait(c);
+
+ if (NT_STATUS_IS_OK(status) && p) {
+ s = talloc_get_type(c->private_data, struct pipe_connect_state);
+ talloc_steal(mem_ctx, s->pipe);
+ *p = s->pipe;
+ }
+
+ talloc_free(c);
+ return status;
+}
+
+
+/*
+ open a rpc connection to a rpc pipe, using the specified
+ binding structure to determine the endpoint and options - sync version
+*/
+NTSTATUS dcerpc_pipe_connect_b(TALLOC_CTX *parent_ctx,
+ struct dcerpc_pipe **pp,
+ struct dcerpc_binding *binding,
+ const struct dcerpc_interface_table *table,
+ struct cli_credentials *credentials,
+ struct event_context *ev)
+{
+ struct composite_context *c;
+
+ c = dcerpc_pipe_connect_b_send(parent_ctx, pp, binding, table,
+ credentials, ev);
+ return dcerpc_pipe_connect_b_recv(c, parent_ctx, pp);
+}
+
+
+struct pipe_conn_state {
+ struct dcerpc_pipe *pipe;
+};
+
+
+static void continue_pipe_connect_b(struct composite_context *ctx);
+
+struct composite_context* dcerpc_pipe_connect_send(TALLOC_CTX *parent_ctx,
+ struct dcerpc_pipe **pp,
+ const char *binding,
+ const struct dcerpc_interface_table *table,
+ struct cli_credentials *credentials,
+ struct event_context *ev)
+{
+ NTSTATUS status;
+ struct composite_context *c;
+ struct pipe_conn_state *s;
+ struct dcerpc_binding *b;
+ struct composite_context *pipe_conn_req;
+
+ c = talloc_zero(parent_ctx, struct composite_context);
+ if (c == NULL) return NULL;
+
+ s = talloc_zero(c, struct pipe_conn_state);
+ if (composite_nomem(s, c)) return c;
+
+ c->state = COMPOSITE_STATE_IN_PROGRESS;
+ c->private_data = s;
+
+ status = dcerpc_parse_binding(c, binding, &b);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("Failed to parse dcerpc binding '%s'\n", binding));
+ composite_error(c, status);
+ return c;
+ }
+
+ DEBUG(3, ("Using binding %s\n", dcerpc_binding_string(c, b)));
+
+ pipe_conn_req = dcerpc_pipe_connect_b_send(c, &s->pipe, b, table,
+ credentials, ev);
+ c->event_ctx = s->pipe->conn->event_ctx;
+
+ if (composite_nomem(pipe_conn_req, c)) return c;
+
+ composite_continue(c, pipe_conn_req, continue_pipe_connect_b, c);
+ return c;
+}
+
+
+static void continue_pipe_connect_b(struct composite_context *ctx)
+{
+ struct composite_context *c = talloc_get_type(ctx->async.private_data,
+ struct composite_context);
+ struct pipe_conn_state *s = talloc_get_type(c->private_data,
+ struct pipe_conn_state);
+
+ c->status = dcerpc_pipe_connect_b_recv(ctx, c, &s->pipe);
+ if (!composite_is_ok(c)) return;
+
+ composite_done(c);
+}
+
+
+NTSTATUS dcerpc_pipe_connect_recv(struct composite_context *c,
+ TALLOC_CTX *mem_ctx,
+ struct dcerpc_pipe **pp)
+{
+ NTSTATUS status;
+ struct pipe_conn_state *s;
+
+ status = composite_wait(c);
+ if (NT_STATUS_IS_OK(status) && pp) {
+ s = talloc_get_type(c->private_data, struct pipe_conn_state);
+ *pp = talloc_steal(mem_ctx, s->pipe);
+ }
+
+ talloc_free(c);
+ return status;
+}
+
+
+/*
+ open a rpc connection to a rpc pipe, using the specified string
+ binding to determine the endpoint and options - sync version
+*/
+NTSTATUS dcerpc_pipe_connect(TALLOC_CTX *parent_ctx,
+ struct dcerpc_pipe **pp,
+ const char *binding,
+ const struct dcerpc_interface_table *table,
+ struct cli_credentials *credentials,
+ struct event_context *ev)
+{
+ struct composite_context *c;
+ c = dcerpc_pipe_connect_send(parent_ctx, pp, binding, table,
+ credentials, ev);
+ return dcerpc_pipe_connect_recv(c, parent_ctx, pp);
+}
+
+
+struct sec_conn_state {
+ struct dcerpc_pipe *pipe;
+ struct dcerpc_pipe **pipe2;
+ struct dcerpc_binding *binding;
+ struct smbcli_tree *tree;
+};
+
+
+static void continue_open_smb(struct composite_context *ctx);
+static void continue_open_tcp(struct composite_context *ctx);
+static void continue_open_pipe(struct composite_context *ctx);
+static void continue_pipe_open(struct composite_context *c);
+
+
+struct composite_context* dcerpc_secondary_connection_send(TALLOC_CTX *mem_ctx,
+ struct dcerpc_pipe *p,
+ struct dcerpc_pipe **p2,
+ struct dcerpc_binding *b)
+{
+ struct composite_context *c;
+ struct sec_conn_state *s;
+ struct composite_context *pipe_smb_req;
+ struct composite_context *pipe_tcp_req;
+ struct composite_context *pipe_ncalrpc_req;
+
+ c = talloc_zero(mem_ctx, struct composite_context);
+ if (c == NULL) return NULL;
+
+ s = talloc_zero(c, struct sec_conn_state);
+ if (s == NULL) {
+ composite_error(c, NT_STATUS_NO_MEMORY);
+ return c;
+ }
+
+ c->state = COMPOSITE_STATE_IN_PROGRESS;
+ c->private_data = s;
+
+ s->pipe = p;
+ s->pipe2 = p2;
+ s->binding = b;
+
+ (*s->pipe2) = dcerpc_pipe_init(s->pipe, s->pipe->conn->event_ctx);
+ if (s->pipe2 == NULL) {
+ composite_error(c, NT_STATUS_NO_MEMORY);
+ return c;
+ }
+
+ c->event_ctx = (*s->pipe2)->conn->event_ctx;
+
+ switch (s->pipe->conn->transport.transport) {
+ case NCACN_NP:
+ s->tree = dcerpc_smb_tree(s->pipe->conn);
+ if (!s->tree) {
+ composite_error(c, NT_STATUS_INVALID_PARAMETER);
+ return c;
+ }
+
+ pipe_smb_req = dcerpc_pipe_open_smb_send((*s->pipe2)->conn, s->tree,
+ s->binding->endpoint);
+ if (composite_nomem(pipe_smb_req, c)) return c;
+
+ composite_continue(c, pipe_smb_req, continue_open_smb, c);
+ return c;
+
+ case NCACN_IP_TCP:
+ pipe_tcp_req = dcerpc_pipe_open_tcp_send((*s->pipe2)->conn,
+ s->binding->host,
+ atoi(s->binding->endpoint));
+ if (composite_nomem(pipe_tcp_req, c)) return c;
+
+ composite_continue(c, pipe_tcp_req, continue_open_tcp, c);
+ return c;
+
+ case NCALRPC:
+ pipe_ncalrpc_req = dcerpc_pipe_open_pipe_send((*s->pipe2)->conn,
+ s->binding->endpoint);
+ if (composite_nomem(pipe_ncalrpc_req, c)) return c;
+
+ composite_continue(c, pipe_ncalrpc_req, continue_open_pipe, c);
+ return c;
+
+ default:
+ composite_error(c, NT_STATUS_NOT_SUPPORTED);
+ }
+
+ return c;
+}
+
+
+static void continue_open_smb(struct composite_context *ctx)
+{
+ struct composite_context *c = talloc_get_type(ctx->async.private_data,
+ struct composite_context);
+ struct sec_conn_state *s = talloc_get_type(c->private_data,
+ struct sec_conn_state);
+
+ c->status = dcerpc_pipe_open_smb_recv(ctx);
+ if (!composite_is_ok(c)) {
+ talloc_free(*s->pipe2);
+ return;
+ }
+
+ continue_pipe_open(c);
+}
+
+
+static void continue_open_tcp(struct composite_context *ctx)
+{
+ struct composite_context *c = talloc_get_type(ctx->async.private_data,
+ struct composite_context);
+ struct sec_conn_state *s = talloc_get_type(c->private_data,
+ struct sec_conn_state);
+
+ c->status = dcerpc_pipe_open_tcp_recv(ctx);
+ if (!composite_is_ok(c)) {
+ talloc_free(*s->pipe2);
+ return;
+ }
+
+ continue_pipe_open(c);
+}
+
+
+static void continue_open_pipe(struct composite_context *ctx)
+{
+ struct composite_context *c = talloc_get_type(ctx->async.private_data,
+ struct composite_context);
+ struct sec_conn_state *s = talloc_get_type(c->private_data,
+ struct sec_conn_state);
+
+ c->status = dcerpc_pipe_open_pipe_recv(ctx);
+ if (!composite_is_ok(c)) {
+ talloc_free(*s->pipe2);
+ return;
+ }
+
+ continue_pipe_open(c);
+}
+
+
+static void continue_pipe_open(struct composite_context *c)
+{
+ struct sec_conn_state *s;
+
+ s = talloc_get_type(c->private_data, struct sec_conn_state);
+
+ (*s->pipe2)->conn->flags = s->pipe->conn->flags;
+ (*s->pipe2)->binding = s->binding;
+ if (!talloc_reference((*s->pipe2), s->binding)) {
+ composite_error(c, NT_STATUS_NO_MEMORY);
+ return;
+ }
+
+ composite_done(c);
+}
+
+
+NTSTATUS dcerpc_secondary_connection_recv(struct composite_context *c)
+{
+ NTSTATUS status = composite_wait(c);
+
+ talloc_free(c);
+ return status;
+}
+
+
+/*
+ create a secondary dcerpc connection from a primary connection
+ - sync version
+
+ 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,
+ struct dcerpc_binding *b)
+{
+ struct composite_context *c;
+
+ c = dcerpc_secondary_connection_send(NULL, p, p2, b);
+ return dcerpc_secondary_connection_recv(c);
+}
diff --git a/source4/librpc/rpc/dcerpc_schannel.c b/source4/librpc/rpc/dcerpc_schannel.c
index 01b6d099aa..dd9afb3a27 100644
--- a/source4/librpc/rpc/dcerpc_schannel.c
+++ b/source4/librpc/rpc/dcerpc_schannel.c
@@ -23,142 +23,325 @@
#include "includes.h"
#include "auth/auth.h"
+#include "libcli/composite/composite.h"
#include "libcli/auth/proto.h"
-/*
- get a schannel key using a netlogon challenge on a secondary pipe
-*/
-static NTSTATUS dcerpc_schannel_key(TALLOC_CTX *tmp_ctx,
- struct dcerpc_pipe *p,
- struct cli_credentials *credentials)
-{
- NTSTATUS status;
- struct dcerpc_binding *b;
- struct dcerpc_pipe *p2;
+
+struct schannel_key_state {
+ struct dcerpc_pipe *pipe;
+ struct dcerpc_pipe *pipe2;
+ struct dcerpc_binding *binding;
+ struct cli_credentials *credentials;
+ struct creds_CredentialState *creds;
+ uint32_t negotiate_flags;
+ struct netr_Credential credentials1;
+ struct netr_Credential credentials2;
+ struct netr_Credential credentials3;
struct netr_ServerReqChallenge r;
struct netr_ServerAuthenticate2 a;
- struct netr_Credential credentials1, credentials2, credentials3;
const struct samr_Password *mach_pwd;
- uint32_t negotiate_flags;
- struct creds_CredentialState *creds;
- creds = talloc(tmp_ctx, struct creds_CredentialState);
- if (!creds) {
- return NT_STATUS_NO_MEMORY;
+};
+
+
+static void continue_secondary_connection(struct composite_context *ctx);
+static void continue_bind_auth_none(struct composite_context *ctx);
+static void continue_srv_challenge(struct rpc_request *req);
+static void continue_srv_auth2(struct rpc_request *req);
+
+
+static void continue_epm_map_binding(struct composite_context *ctx)
+{
+ struct composite_context *c;
+ struct schannel_key_state *s;
+ struct composite_context *sec_conn_req;
+
+ c = talloc_get_type(ctx->async.private_data, struct composite_context);
+ s = talloc_get_type(c->private_data, struct schannel_key_state);
+
+ c->status = dcerpc_epm_map_binding_recv(ctx);
+ if (!composite_is_ok(c)) {
+ DEBUG(0,("Failed to map DCERPC/TCP NCACN_NP pipe for '%s' - %s\n",
+ DCERPC_NETLOGON_UUID, nt_errstr(c->status)));
+ return;
}
- if (p->conn->flags & DCERPC_SCHANNEL_128) {
- negotiate_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
- } else {
- negotiate_flags = NETLOGON_NEG_AUTH2_FLAGS;
+ sec_conn_req = dcerpc_secondary_connection_send(c, s->pipe, &s->pipe2,
+ s->binding);
+ if (composite_nomem(sec_conn_req, c)) return;
+
+ composite_continue(c, sec_conn_req, continue_secondary_connection, c);
+}
+
+
+static void continue_secondary_connection(struct composite_context *ctx)
+{
+ struct composite_context *c;
+ struct schannel_key_state *s;
+ struct composite_context *auth_none_req;
+
+ c = talloc_get_type(ctx->async.private_data, struct composite_context);
+ s = talloc_get_type(c->private_data, struct schannel_key_state);
+
+ c->status = dcerpc_secondary_connection_recv(ctx);
+ if (!composite_is_ok(c)) return;
+
+ auth_none_req = dcerpc_bind_auth_none_send(c, s->pipe2, &dcerpc_table_netlogon);
+ if (composite_nomem(auth_none_req, c)) return;
+
+ composite_continue(c, auth_none_req, continue_bind_auth_none, c);
+}
+
+
+static void continue_bind_auth_none(struct composite_context *ctx)
+{
+ struct composite_context *c;
+ struct schannel_key_state *s;
+ struct rpc_request *srv_challenge_req;
+
+ c = talloc_get_type(ctx->async.private_data, struct composite_context);
+ s = talloc_get_type(c->private_data, struct schannel_key_state);
+
+ c->status = dcerpc_bind_auth_none_recv(ctx);
+ if (!composite_is_ok(c)) {
+ talloc_free(s->pipe2);
+ return;
}
+ s->r.in.server_name = talloc_asprintf(c, "\\\\%s", dcerpc_server_name(s->pipe));
+ if (composite_nomem(s->r.in.server_name, c)) return;
+ s->r.in.computer_name = cli_credentials_get_workstation(s->credentials);
+ s->r.in.credentials = &s->credentials1;
+ s->r.out.credentials = &s->credentials2;
+
+ generate_random_buffer(s->credentials1.data, sizeof(s->credentials1.data));
+
/*
- step 1 - establish a netlogon connection, with no authentication
+ request a netlogon challenge
*/
- b = talloc(tmp_ctx, struct dcerpc_binding);
- if (!b) {
- return NT_STATUS_NO_MEMORY;
- }
- *b = *p->binding;
-
- /* Make binding string for netlogon, not the other pipe */
- status = dcerpc_epm_map_binding(tmp_ctx, b,
- &dcerpc_table_netlogon,
- p->conn->event_ctx);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0,("Failed to map DCERPC/TCP NCACN_NP pipe for '%s' - %s\n",
- DCERPC_NETLOGON_UUID, nt_errstr(status)));
- return status;
- }
+ srv_challenge_req = dcerpc_netr_ServerReqChallenge_send(s->pipe2, c, &s->r);
+ if (composite_nomem(srv_challenge_req, c)) return;
- status = dcerpc_secondary_connection(p, &p2, b);
- if (!NT_STATUS_IS_OK(status)) {
- return status;
- }
+ composite_continue_rpc(c, srv_challenge_req, continue_srv_challenge, c);
+}
+
+
+static void continue_srv_challenge(struct rpc_request *req)
+{
+ struct composite_context *c;
+ struct schannel_key_state *s;
+ struct rpc_request *srv_auth2_req;
- status = dcerpc_bind_auth_none(p2, &dcerpc_table_netlogon);
- if (!NT_STATUS_IS_OK(status)) {
- talloc_free(p2);
- return status;
- }
+ c = talloc_get_type(req->async.private, struct composite_context);
+ s = talloc_get_type(c->private_data, struct schannel_key_state);
+
+ c->status = dcerpc_ndr_request_recv(req);
+ if (!composite_is_ok(c)) return;
/*
- step 2 - request a netlogon challenge
+ authenticate on the netlogon pipe
*/
- r.in.server_name = talloc_asprintf(tmp_ctx, "\\\\%s", dcerpc_server_name(p));
- r.in.computer_name = cli_credentials_get_workstation(credentials);
- r.in.credentials = &credentials1;
- r.out.credentials = &credentials2;
- generate_random_buffer(credentials1.data, sizeof(credentials1.data));
+ s->mach_pwd = cli_credentials_get_nt_hash(s->credentials, c);
+
+ creds_client_init(s->creds, &s->credentials1, &s->credentials2,
+ s->mach_pwd, &s->credentials3, s->negotiate_flags);
+
+ s->a.in.server_name = s->r.in.server_name;
+ s->a.in.account_name = cli_credentials_get_username(s->credentials);
+ s->a.in.secure_channel_type =
+ cli_credentials_get_secure_channel_type(s->credentials);
+ s->a.in.computer_name = cli_credentials_get_workstation(s->credentials);
+ s->a.in.negotiate_flags = &s->negotiate_flags;
+ s->a.in.credentials = &s->credentials3;
+ s->a.out.negotiate_flags = &s->negotiate_flags;
+ s->a.out.credentials = &s->credentials3;
+
+ srv_auth2_req = dcerpc_netr_ServerAuthenticate2_send(s->pipe2, c, &s->a);
+ if (composite_nomem(srv_auth2_req, c)) return;
+
+ composite_continue_rpc(c, srv_auth2_req, continue_srv_auth2, c);
+}
+
- status = dcerpc_netr_ServerReqChallenge(p2, tmp_ctx, &r);
- if (!NT_STATUS_IS_OK(status)) {
- return status;
+static void continue_srv_auth2(struct rpc_request *req)
+{
+ struct composite_context *c;
+ struct schannel_key_state *s;
+
+ c = talloc_get_type(req->async.private, struct composite_context);
+ s = talloc_get_type(c->private_data, struct schannel_key_state);
+
+ c->status = dcerpc_ndr_request_recv(req);
+ if (!composite_is_ok(c)) return;
+
+ if (!creds_client_check(s->creds, s->a.out.credentials)) {
+ composite_error(c, NT_STATUS_UNSUCCESSFUL);
+ return;
}
- /*
- step 3 - authenticate on the netlogon pipe
- */
- mach_pwd = cli_credentials_get_nt_hash(credentials, tmp_ctx);
-
- creds_client_init(creds, &credentials1, &credentials2,
- mach_pwd, &credentials3,
- negotiate_flags);
-
- a.in.server_name = r.in.server_name;
- a.in.account_name = cli_credentials_get_username(credentials);
- a.in.secure_channel_type =
- cli_credentials_get_secure_channel_type(credentials);
- a.in.computer_name = cli_credentials_get_workstation(credentials);
- a.in.negotiate_flags = &negotiate_flags;
- a.out.negotiate_flags = &negotiate_flags;
- a.in.credentials = &credentials3;
- a.out.credentials = &credentials3;
-
- status = dcerpc_netr_ServerAuthenticate2(p2, tmp_ctx, &a);
- if (!NT_STATUS_IS_OK(status)) {
- return status;
+ cli_credentials_set_netlogon_creds(s->credentials, s->creds);
+ talloc_free(s->pipe2);
+
+ composite_done(c);
+}
+
+
+/*
+ initiate getting a schannel key using a netlogon challenge on a secondary pipe
+*/
+struct composite_context *dcerpc_schannel_key_send(TALLOC_CTX *mem_ctx,
+ struct dcerpc_pipe *p,
+ struct cli_credentials *credentials)
+{
+ struct composite_context *c;
+ struct schannel_key_state *s;
+ struct composite_context *epm_map_req;
+
+ c = talloc_zero(mem_ctx, struct composite_context);
+ if (c == NULL) return NULL;
+
+ s = talloc_zero(c, struct schannel_key_state);
+ if (composite_nomem(s, c)) return c;
+
+ c->state = COMPOSITE_STATE_IN_PROGRESS;
+ c->private_data = s;
+ c->event_ctx = p->conn->event_ctx;
+
+ s->pipe = p;
+ s->credentials = credentials;
+
+ s->creds = talloc(c, struct creds_CredentialState);
+ if (composite_nomem(s->creds, c)) return c;
+
+ if (s->pipe->conn->flags & DCERPC_SCHANNEL_128) {
+ s->negotiate_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
+ } else {
+ s->negotiate_flags = NETLOGON_NEG_AUTH2_FLAGS;
}
- if (!creds_client_check(creds, a.out.credentials)) {
- return NT_STATUS_UNSUCCESSFUL;
+ s->binding = talloc(c, struct dcerpc_binding);
+ if (composite_nomem(s->binding, c)) return c;
+
+ *s->binding = *s->pipe->binding;
+
+ epm_map_req = dcerpc_epm_map_binding_send(c, s->binding,
+ &dcerpc_table_netlogon,
+ s->pipe->conn->event_ctx);
+ if (composite_nomem(epm_map_req, c)) return c;
+
+ composite_continue(c, epm_map_req, continue_epm_map_binding, c);
+ return c;
+}
+
+
+NTSTATUS dcerpc_schannel_key_recv(struct composite_context *c)
+{
+ NTSTATUS status = composite_wait(c);
+
+ talloc_free(c);
+ return status;
+}
+
+
+struct auth_schannel_state {
+ struct dcerpc_pipe *pipe;
+ struct cli_credentials *credentials;
+ const struct dcerpc_interface_table *table;
+ uint8_t auth_level;
+};
+
+
+static void continue_bind_auth(struct composite_context *ctx);
+
+
+static void continue_schannel_key(struct composite_context *ctx)
+{
+ struct composite_context *auth_req;
+ struct composite_context *c = talloc_get_type(ctx->async.private_data,
+ struct composite_context);
+ struct auth_schannel_state *s = talloc_get_type(c->private_data,
+ struct auth_schannel_state);
+
+ c->status = dcerpc_schannel_key_recv(ctx);
+ if (!composite_is_ok(c)) {
+ DEBUG(1, ("Failed to setup credentials for account %s: %s\n",
+ cli_credentials_get_username(s->credentials), nt_errstr(c->status)));
+ return;
}
- cli_credentials_set_netlogon_creds(credentials, creds);
+ auth_req = dcerpc_bind_auth_send(c, s->pipe, s->table, s->credentials,
+ DCERPC_AUTH_TYPE_SCHANNEL, s->auth_level,
+ NULL);
+ if (composite_nomem(auth_req, c)) return;
+
+ composite_continue(c, auth_req, continue_bind_auth, c);
+}
- /*
- the schannel session key is now in creds.session_key
- we no longer need the netlogon pipe open
- */
- talloc_free(p2);
+static void continue_bind_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);
+}
+
+
+struct composite_context *dcerpc_bind_auth_schannel_send(TALLOC_CTX *tmp_ctx,
+ struct dcerpc_pipe *p,
+ const struct dcerpc_interface_table *table,
+ struct cli_credentials *credentials,
+ uint8_t auth_level)
+{
+ struct composite_context *c;
+ struct auth_schannel_state *s;
+ struct composite_context *schan_key_req;
- return NT_STATUS_OK;
+ c = talloc_zero(tmp_ctx, struct composite_context);
+ if (c == NULL) return NULL;
+
+ s = talloc_zero(c, struct auth_schannel_state);
+ if (composite_nomem(s, c)) return c;
+
+ c->state = COMPOSITE_STATE_IN_PROGRESS;
+ c->private_data = s;
+ c->event_ctx = p->conn->event_ctx;
+
+ s->pipe = p;
+ s->credentials = credentials;
+ s->table = table;
+ s->auth_level = auth_level;
+
+ schan_key_req = dcerpc_schannel_key_send(c, p, credentials);
+ if (composite_nomem(schan_key_req, c)) return c;
+
+ composite_continue(c, schan_key_req, continue_schannel_key, c);
+ return c;
+}
+
+
+NTSTATUS dcerpc_bind_auth_schannel_recv(struct composite_context *c)
+{
+ NTSTATUS status = composite_wait(c);
+
+ talloc_free(c);
+ return status;
}
+
NTSTATUS dcerpc_bind_auth_schannel(TALLOC_CTX *tmp_ctx,
struct dcerpc_pipe *p,
const struct dcerpc_interface_table *table,
struct cli_credentials *credentials,
uint8_t auth_level)
{
- NTSTATUS status;
-
- /* Fills in NETLOGON credentials */
- status = dcerpc_schannel_key(tmp_ctx,
- p, credentials);
-
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(1, ("Failed to setup credentials for account %s: %s\n",
- cli_credentials_get_username(credentials),
- nt_errstr(status)));
- return status;
- }
+ struct composite_context *c;
- return dcerpc_bind_auth(p, table, credentials,
- DCERPC_AUTH_TYPE_SCHANNEL, auth_level,
- NULL);
+ c = dcerpc_bind_auth_schannel_send(tmp_ctx, p, table, credentials,
+ auth_level);
+ return dcerpc_bind_auth_schannel_recv(c);
}
-
diff --git a/source4/librpc/rpc/dcerpc_util.c b/source4/librpc/rpc/dcerpc_util.c
index 41121889e0..d314a3b3de 100644
--- a/source4/librpc/rpc/dcerpc_util.c
+++ b/source4/librpc/rpc/dcerpc_util.c
@@ -23,6 +23,7 @@
*/
#include "includes.h"
+#include "libcli/composite/composite.h"
#include "librpc/gen_ndr/ndr_epmapper.h"
#include "librpc/gen_ndr/ndr_dcerpc.h"
#include "librpc/gen_ndr/ndr_misc.h"
@@ -757,14 +758,182 @@ NTSTATUS dcerpc_binding_build_tower(TALLOC_CTX *mem_ctx, struct dcerpc_binding *
return NT_STATUS_OK;
}
+
+struct epm_map_binding_state {
+ struct dcerpc_binding *binding;
+ const struct dcerpc_interface_table *table;
+ struct dcerpc_pipe *pipe;
+ 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);
+
+
+static void continue_epm_recv_binding(struct composite_context *ctx)
+{
+ struct policy_handle handle;
+ struct GUID guid;
+ 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);
+
+ c->status = dcerpc_pipe_connect_b_recv(ctx, c, &s->pipe);
+ if (!composite_is_ok(c)) return;
+
+ ZERO_STRUCT(handle);
+ ZERO_STRUCT(guid);
+
+ s->binding->object = s->table->uuid;
+ s->binding->object_version = s->table->if_version;
+
+ 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 = &guid;
+ s->r.in.map_tower = &s->twr;
+ s->r.in.entry_handle = &handle;
+ s->r.in.max_towers = 1;
+ s->r.out.entry_handle = &handle;
+
+ 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);
+}
+
+
+static void continue_epm_map(struct rpc_request *req)
+{
+ struct composite_context *c = talloc_get_type(req->async.private,
+ struct composite_context);
+ struct epm_map_binding_state *s = talloc_get_type(c->private_data,
+ struct epm_map_binding_state);
+
+ c->status = dcerpc_ndr_request_recv(req);
+ if (!composite_is_ok(c)) return;
+
+ 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;
+ }
+
+ s->binding->endpoint = talloc_reference(s->binding,
+ dcerpc_floor_get_rhs_data(c, &s->twr_r->tower.floors[3]));
+ composite_done(c);
+}
+
+
+struct composite_context *dcerpc_epm_map_binding_send(TALLOC_CTX *mem_ctx,
+ struct dcerpc_binding *binding,
+ const struct dcerpc_interface_table *table,
+ struct event_context *ev)
+{
+ struct composite_context *c;
+ struct epm_map_binding_state *s;
+ struct composite_context *pipe_connect_req;
+
+ NTSTATUS status;
+ struct dcerpc_binding *epmapper_binding;
+ int i;
+
+ /* composite context allocation and setup */
+ c = talloc_zero(mem_ctx, struct composite_context);
+ if (c == NULL) return NULL;
+
+ s = talloc_zero(c, struct epm_map_binding_state);
+ if (composite_nomem(s, c)) return c;
+
+ c->state = COMPOSITE_STATE_IN_PROGRESS;
+ c->private_data = s;
+ c->event_ctx = ev;
+
+ s->binding = binding;
+ s->table = table;
+
+ struct cli_credentials *anon_creds = cli_credentials_init(mem_ctx);
+ cli_credentials_set_conf(anon_creds);
+ cli_credentials_set_anonymous(anon_creds);
+
+ /* First, check if there is a default endpoint specified in the IDL */
+
+ if (table) {
+ 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 (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;
+
+ epmapper_binding->transport = binding->transport;
+ epmapper_binding->host = talloc_reference(epmapper_binding, binding->host);
+ epmapper_binding->options = NULL;
+ epmapper_binding->flags = 0;
+ epmapper_binding->endpoint = NULL;
+
+ pipe_connect_req = dcerpc_pipe_connect_b_send(c, &s->pipe, epmapper_binding, &dcerpc_table_epmapper,
+ anon_creds, ev);
+ if (composite_nomem(pipe_connect_req, c)) return c;
+
+ composite_continue(c, pipe_connect_req, continue_epm_recv_binding, c);
+ return c;
+}
+
+
+NTSTATUS dcerpc_epm_map_binding_recv(struct composite_context *c)
+{
+ NTSTATUS status = composite_wait(c);
+
+ talloc_free(c);
+ return status;
+}
+
+
+
NTSTATUS dcerpc_epm_map_binding(TALLOC_CTX *mem_ctx, struct dcerpc_binding *binding,
const struct dcerpc_interface_table *table, struct event_context *ev)
{
struct dcerpc_pipe *p;
NTSTATUS status;
- struct epm_Map r;
struct policy_handle handle;
struct GUID guid;
+ struct epm_Map r;
struct epm_twr_t twr, *twr_r;
struct dcerpc_binding *epmapper_binding;
int i;
@@ -865,6 +1034,175 @@ NTSTATUS dcerpc_epm_map_binding(TALLOC_CTX *mem_ctx, struct dcerpc_binding *bind
}
+struct pipe_auth_state {
+ struct dcerpc_pipe *pipe;
+ struct dcerpc_binding *binding;
+ const struct dcerpc_interface_table *table;
+ 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_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);
+}
+
+
+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);
+}
+
+
+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);
+}
+
+
+struct composite_context *dcerpc_pipe_auth_send(struct dcerpc_pipe *p,
+ struct dcerpc_binding *binding,
+ const struct dcerpc_interface_table *table,
+ struct cli_credentials *credentials)
+{
+ 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;
+
+ /* composite context allocation and setup */
+ c = talloc_zero(NULL, struct composite_context);
+ if (c == NULL) return NULL;
+
+ s = talloc_zero(c, struct pipe_auth_state);
+ if (composite_nomem(s, c)) return c;
+
+ c->state = COMPOSITE_STATE_IN_PROGRESS;
+ c->private_data = s;
+ c->event_ctx = p->conn->event_ctx;
+
+ s->binding = binding;
+ s->table = table;
+ s->credentials = credentials;
+ s->pipe = p;
+
+ s->pipe->conn->flags = binding->flags;
+
+ /* remember the binding string for possible secondary connections */
+ s->pipe->conn->binding_string = dcerpc_binding_string(p, binding);
+
+ if (!cli_credentials_is_anonymous(s->credentials) &&
+ (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,
+ dcerpc_auth_level(s->pipe->conn));
+ if (composite_nomem(auth_schannel_req, c)) return c;
+
+ composite_continue(c, auth_schannel_req, continue_auth_schannel, c);
+
+ } else if (!cli_credentials_is_anonymous(s->credentials) &&
+ !(s->pipe->conn->transport.transport == NCACN_NP &&
+ !(s->binding->flags & DCERPC_SIGN) &&
+ !(s->binding->flags & DCERPC_SEAL))) {
+
+ /* Perform an authenticated DCE-RPC bind, except where
+ * we ask for a connection on NCACN_NP, and that
+ * connection is not signed or sealed. For that case
+ * we rely on the already authenticated CIFS connection
+ */
+
+ uint8_t auth_type;
+
+ if ((s->pipe->conn->flags & (DCERPC_SIGN|DCERPC_SEAL)) == 0) {
+ /*
+ 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.
+ */
+ s->pipe->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 {
+ auth_type = DCERPC_AUTH_TYPE_NTLMSSP;
+ }
+
+ auth_req = dcerpc_bind_auth_send(c, s->pipe, s->table,
+ s->credentials, auth_type,
+ dcerpc_auth_level(s->pipe->conn),
+ s->table->authservices->names[0]);
+ if (composite_nomem(auth_req, c)) return c;
+
+ composite_continue(c, auth_req, continue_auth, c);
+
+ } else {
+ auth_none_req = dcerpc_bind_auth_none_send(c, s->pipe, s->table);
+ if (composite_nomem(auth_none_req, c)) return c;
+
+ composite_continue(c, auth_none_req, continue_auth_none, c);
+ }
+
+ return c;
+}
+
+
+NTSTATUS dcerpc_pipe_auth_recv(struct composite_context *c)
+{
+ 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->uuid);
+ DEBUG(0, ("Failed to bind to uuid %s - %s\n", uuid_str, nt_errstr(status)));
+ talloc_free(uuid_str);
+ }
+
+ talloc_free(c);
+ return status;
+}
+
+
/*
perform an authenticated bind if needed
*/
@@ -943,205 +1281,6 @@ NTSTATUS dcerpc_pipe_auth(struct dcerpc_pipe *p,
}
-/* 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(TALLOC_CTX *tmp_ctx,
- struct dcerpc_pipe_connect *io)
-{
- if (io->binding->flags & DCERPC_SMB2) {
- return dcerpc_pipe_connect_ncacn_np_smb2(tmp_ctx, io);
-
- }
- return dcerpc_pipe_connect_ncacn_np_smb(tmp_ctx, io);
-}
-
-
-/* open a rpc connection to a rpc pipe, using the specified
- binding structure to determine the endpoint and options */
-NTSTATUS dcerpc_pipe_connect_b(TALLOC_CTX *parent_ctx,
- struct dcerpc_pipe **pp,
- struct dcerpc_binding *binding,
- const struct dcerpc_interface_table *table,
- struct cli_credentials *credentials,
- struct event_context *ev)
-{
- NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
- struct dcerpc_pipe *p;
- struct dcerpc_pipe_connect pc;
-
- TALLOC_CTX *tmp_ctx;
-
- (*pp) = NULL;
-
- p = dcerpc_pipe_init(parent_ctx, ev);
- if (p == NULL) {
- return NT_STATUS_NO_MEMORY;
- }
- tmp_ctx = talloc_named(p, 0, "dcerpc_pipe_connect_b tmp_ctx");
-
- switch (binding->transport) {
- case NCACN_NP:
- case NCACN_IP_TCP:
- case NCALRPC:
- if (!binding->endpoint) {
- status = dcerpc_epm_map_binding(tmp_ctx, binding, table,
- p->conn->event_ctx);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0,("Failed to map DCERPC endpoint for '%s' - %s\n",
- GUID_string(tmp_ctx, &table->uuid), nt_errstr(status)));
- talloc_free(tmp_ctx);
- return status;
- }
- DEBUG(2,("Mapped to DCERPC endpoint %s\n", binding->endpoint));
- }
- break;
-
- /* Fall through to next switch statement */
-
- default:
- break;
- }
-
- pc.pipe = p;
- pc.binding = binding;
- pc.interface = table;
- pc.creds = credentials;
-
- switch (binding->transport) {
- case NCACN_NP:
- status = dcerpc_pipe_connect_ncacn_np(tmp_ctx, &pc);
- break;
-
- case NCACN_IP_TCP:
- status = dcerpc_pipe_connect_ncacn_ip_tcp(tmp_ctx, &pc);
- break;
-
- case NCACN_UNIX_STREAM:
- status = dcerpc_pipe_connect_ncacn_unix_stream(tmp_ctx, &pc);
- break;
-
- case NCALRPC:
- status = dcerpc_pipe_connect_ncalrpc(tmp_ctx, &pc);
- break;
-
- default:
- return NT_STATUS_NOT_SUPPORTED;
- }
-
- if (!NT_STATUS_IS_OK(status)) {
- talloc_free(p);
- return status;
- }
-
- p->binding = binding;
- if (!talloc_reference(p, binding)) {
- return NT_STATUS_NO_MEMORY;
- }
-
- status = dcerpc_pipe_auth(p, binding, table, credentials);
- if (!NT_STATUS_IS_OK(status)) {
- talloc_free(p);
- return status;
- }
- *pp = p;
- talloc_free(tmp_ctx);
-
- 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(TALLOC_CTX *parent_ctx,
- struct dcerpc_pipe **pp,
- const char *binding,
- const struct dcerpc_interface_table *table,
- struct cli_credentials *credentials,
- struct event_context *ev)
-{
- struct dcerpc_binding *b;
- NTSTATUS status;
- TALLOC_CTX *tmp_ctx;
-
- tmp_ctx = talloc_named(parent_ctx, 0, "dcerpc_pipe_connect tmp_ctx");
- if (!tmp_ctx) {
- return NT_STATUS_NO_MEMORY;
- }
-
- status = dcerpc_parse_binding(tmp_ctx, binding, &b);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(0,("Failed to parse dcerpc binding '%s'\n", binding));
- talloc_free(tmp_ctx);
- return status;
- }
-
- DEBUG(3,("Using binding %s\n", dcerpc_binding_string(tmp_ctx, b)));
-
- status = dcerpc_pipe_connect_b(tmp_ctx, pp, b, table, credentials, ev);
-
- if (NT_STATUS_IS_OK(status)) {
- *pp = talloc_steal(parent_ctx, *pp);
- }
- talloc_free(tmp_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,
- struct dcerpc_binding *b)
-
-
-{
- struct smbcli_tree *tree;
- NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
-
- (*p2) = dcerpc_pipe_init(p, p->conn->event_ctx);
- if (*p2 == NULL) {
- return NT_STATUS_NO_MEMORY;
- }
-
- switch (p->conn->transport.transport) {
- case NCACN_NP:
- tree = dcerpc_smb_tree(p->conn);
- if (!tree) {
- return NT_STATUS_INVALID_PARAMETER;
- }
- status = dcerpc_pipe_open_smb((*p2)->conn, tree, b->endpoint);
- break;
-
- case NCACN_IP_TCP:
- status = dcerpc_pipe_open_tcp((*p2)->conn, b->host, atoi(b->endpoint));
- break;
-
- case NCALRPC:
- status = dcerpc_pipe_open_pipe((*p2)->conn, b->endpoint);
- break;
-
- default:
- return NT_STATUS_NOT_SUPPORTED;
- }
-
- if (!NT_STATUS_IS_OK(status)) {
- talloc_free(*p2);
- return status;
- }
-
- (*p2)->conn->flags = p->conn->flags;
- (*p2)->binding = b;
- if (!talloc_reference(*p2, b)) {
- return NT_STATUS_NO_MEMORY;
- }
-
- return NT_STATUS_OK;
-}
-
NTSTATUS dcerpc_generic_session_key(struct dcerpc_connection *c,
DATA_BLOB *session_key)
{
generated by cgit (git 2.34.1) at 2024-09-03 11:33:29 +0000