#include "smbd/smbd.h"
#include "smbd/globals.h"
#include "../libcli/smb/smb_common.h"
+#include "../lib/tsocket/tsocket.h"
+#include "../librpc/ndr/libndr.h"
+
+extern fstring remote_proto;
/*
* this is the entry point if SMB2 is selected via
reply_smb20xx(req, SMB2_DIALECT_REVISION_2FF);
}
-NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req)
+enum protocol_types smbd_smb2_protocol_dialect_match(const uint8_t *indyn,
+ const int dialect_count,
+ uint16_t *dialect)
{
- const uint8_t *inbody;
- const uint8_t *indyn = NULL;
- int i = req->current_idx;
- DATA_BLOB outbody;
- DATA_BLOB outdyn;
- DATA_BLOB negprot_spnego_blob;
- uint16_t security_offset;
- DATA_BLOB security_buffer;
- size_t expected_body_size = 0x24;
- size_t body_size;
- size_t expected_dyn_size = 0;
- size_t c;
- uint16_t security_mode;
- uint16_t dialect_count;
- uint16_t dialect = 0;
- uint32_t capabilities;
+ size_t c = 0;
enum protocol_types protocol = PROTOCOL_NONE;
- uint32_t max_limit;
- uint32_t max_trans = lp_smb2_max_trans();
- uint32_t max_read = lp_smb2_max_read();
- uint32_t max_write = lp_smb2_max_write();
-/* TODO: drop the connection with INVALID_PARAMETER */
+ for (c=0; protocol == PROTOCOL_NONE && c < dialect_count; c++) {
+ if (lp_server_max_protocol() < PROTOCOL_SMB3_00) {
+ break;
+ }
+ if (lp_server_min_protocol() > PROTOCOL_SMB3_00) {
+ break;
+ }
- if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
- return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+ *dialect = SVAL(indyn, c*2);
+ if (*dialect == SMB3_DIALECT_REVISION_300) {
+ protocol = PROTOCOL_SMB3_00;
+ break;
+ }
}
- inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
+ for (c=0; protocol == PROTOCOL_NONE && c < dialect_count; c++) {
+ if (lp_server_max_protocol() < PROTOCOL_SMB2_24) {
+ break;
+ }
+ if (lp_server_min_protocol() > PROTOCOL_SMB2_24) {
+ break;
+ }
- body_size = SVAL(inbody, 0x00);
- if (body_size != expected_body_size) {
- return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+ *dialect = SVAL(indyn, c*2);
+ if (*dialect == SMB2_DIALECT_REVISION_224) {
+ protocol = PROTOCOL_SMB2_24;
+ break;
+ }
}
- dialect_count = SVAL(inbody, 0x02);
- if (dialect_count == 0) {
- return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
- }
+ for (c=0; protocol == PROTOCOL_NONE && c < dialect_count; c++) {
+ if (lp_server_max_protocol() < PROTOCOL_SMB2_22) {
+ break;
+ }
+ if (lp_server_min_protocol() > PROTOCOL_SMB2_22) {
+ break;
+ }
- expected_dyn_size = dialect_count * 2;
- if (req->in.vector[i+2].iov_len < expected_dyn_size) {
- return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+ *dialect = SVAL(indyn, c*2);
+ if (*dialect == SMB2_DIALECT_REVISION_222) {
+ protocol = PROTOCOL_SMB2_22;
+ break;
+ }
}
- indyn = (const uint8_t *)req->in.vector[i+2].iov_base;
for (c=0; protocol == PROTOCOL_NONE && c < dialect_count; c++) {
- if (lp_maxprotocol() < PROTOCOL_SMB2_10) {
+ if (lp_server_max_protocol() < PROTOCOL_SMB2_10) {
break;
}
- if (lp_minprotocol() > PROTOCOL_SMB2_10) {
+ if (lp_server_min_protocol() > PROTOCOL_SMB2_10) {
break;
}
- dialect = SVAL(indyn, c*2);
- if (dialect == SMB2_DIALECT_REVISION_210) {
+ *dialect = SVAL(indyn, c*2);
+ if (*dialect == SMB2_DIALECT_REVISION_210) {
protocol = PROTOCOL_SMB2_10;
break;
}
}
for (c=0; protocol == PROTOCOL_NONE && c < dialect_count; c++) {
- if (lp_maxprotocol() < PROTOCOL_SMB2_02) {
+ if (lp_server_max_protocol() < PROTOCOL_SMB2_02) {
break;
}
- if (lp_minprotocol() > PROTOCOL_SMB2_02) {
+ if (lp_server_min_protocol() > PROTOCOL_SMB2_02) {
break;
}
- dialect = SVAL(indyn, c*2);
- if (dialect == SMB2_DIALECT_REVISION_202) {
+ *dialect = SVAL(indyn, c*2);
+ if (*dialect == SMB2_DIALECT_REVISION_202) {
protocol = PROTOCOL_SMB2_02;
break;
}
}
+ return protocol;
+}
+
+NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req)
+{
+ NTSTATUS status;
+ const uint8_t *inbody;
+ const uint8_t *indyn = NULL;
+ DATA_BLOB outbody;
+ DATA_BLOB outdyn;
+ DATA_BLOB negprot_spnego_blob;
+ uint16_t security_offset;
+ DATA_BLOB security_buffer;
+ size_t expected_dyn_size = 0;
+ size_t c;
+ uint16_t security_mode;
+ uint16_t dialect_count;
+ uint16_t in_security_mode;
+ uint32_t in_capabilities;
+ DATA_BLOB in_guid_blob;
+ struct GUID in_guid;
+ uint16_t dialect = 0;
+ uint32_t capabilities;
+ DATA_BLOB out_guid_blob;
+ struct GUID out_guid;
+ enum protocol_types protocol = PROTOCOL_NONE;
+ uint32_t max_limit;
+ uint32_t max_trans = lp_smb2_max_trans();
+ uint32_t max_read = lp_smb2_max_read();
+ uint32_t max_write = lp_smb2_max_write();
+ NTTIME now = timeval_to_nttime(&req->request_time);
+
+ status = smbd_smb2_request_verify_sizes(req, 0x24);
+ if (!NT_STATUS_IS_OK(status)) {
+ return smbd_smb2_request_error(req, status);
+ }
+ inbody = SMBD_SMB2_IN_BODY_PTR(req);
+
+ dialect_count = SVAL(inbody, 0x02);
+
+ in_security_mode = SVAL(inbody, 0x04);
+ in_capabilities = IVAL(inbody, 0x08);
+ in_guid_blob = data_blob_const(inbody + 0x0C, 16);
+
+ if (dialect_count == 0) {
+ return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+ }
+
+ status = GUID_from_ndr_blob(&in_guid_blob, &in_guid);
+ if (!NT_STATUS_IS_OK(status)) {
+ return smbd_smb2_request_error(req, status);
+ }
+
+ expected_dyn_size = dialect_count * 2;
+ if (SMBD_SMB2_IN_DYN_LEN(req) < expected_dyn_size) {
+ return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+ }
+ indyn = SMBD_SMB2_IN_DYN_PTR(req);
+
+ protocol = smbd_smb2_protocol_dialect_match(indyn,
+ dialect_count,
+ &dialect);
+
for (c=0; protocol == PROTOCOL_NONE && c < dialect_count; c++) {
- if (lp_maxprotocol() < PROTOCOL_SMB2_10) {
+ if (lp_server_max_protocol() < PROTOCOL_SMB2_10) {
break;
}
return smbd_smb2_request_error(req, NT_STATUS_NOT_SUPPORTED);
}
- if (dialect != SMB2_DIALECT_REVISION_2FF) {
- set_Protocol(protocol);
- }
-
if (get_remote_arch() != RA_SAMBA) {
set_remote_arch(RA_VISTA);
}
+ fstr_sprintf(remote_proto, "SMB%X_%02X",
+ (dialect >> 8) & 0xFF, dialect & 0xFF);
+
+ reload_services(req->sconn, conn_snum_used, true);
+ DEBUG(3,("Selected protocol %s\n", remote_proto));
+
/* negprot_spnego() returns a the server guid in the first 16 bytes */
negprot_spnego_blob = negprot_spnego(req, req->sconn);
if (negprot_spnego_blob.data == NULL) {
}
security_mode = SMB2_NEGOTIATE_SIGNING_ENABLED;
- if (lp_server_signing() == Required) {
+ if (lp_server_signing() == SMB_SIGNING_REQUIRED) {
security_mode |= SMB2_NEGOTIATE_SIGNING_REQUIRED;
}
capabilities |= SMB2_CAP_DFS;
}
+ if ((protocol >= PROTOCOL_SMB2_24) &&
+ (lp_smb_encrypt(-1) != SMB_SIGNING_OFF) &&
+ (in_capabilities & SMB2_CAP_ENCRYPTION)) {
+ capabilities |= SMB2_CAP_ENCRYPTION;
+ }
+
/*
- * Unless we implement SMB2_CAP_LARGE_MTU,
* 0x10000 (65536) is the maximum allowed message size
+ * for SMB 2.0
*/
max_limit = 0x10000;
- max_trans = MIN(max_limit, max_trans);
- max_read = MIN(max_limit, max_read);
- max_write = MIN(max_limit, max_write);
+ if (protocol >= PROTOCOL_SMB2_10) {
+ int p = 0;
+
+ if (tsocket_address_is_inet(req->sconn->local_address, "ip")) {
+ p = tsocket_address_inet_port(req->sconn->local_address);
+ }
+
+ /* largeMTU is not supported over NBT (tcp port 139) */
+ if (p != NBT_SMB_PORT) {
+ capabilities |= SMB2_CAP_LARGE_MTU;
+ req->sconn->smb2.supports_multicredit = true;
+
+ /* SMB >= 2.1 has 1 MB of allowed size */
+ max_limit = 0x100000; /* 1MB */
+ }
+ }
+
+ /*
+ * the defaults are 1MB, but we'll limit this to max_limit based on
+ * the dialect (64kb for SMB2.0, 1MB for SMB2.1 with LargeMTU)
+ *
+ * user configured values exceeding the limits will be overwritten,
+ * only smaller values will be accepted
+ */
+
+ max_trans = MIN(max_limit, lp_smb2_max_trans());
+ max_read = MIN(max_limit, lp_smb2_max_read());
+ max_write = MIN(max_limit, lp_smb2_max_write());
security_offset = SMB2_HDR_BODY + 0x40;
security_buffer = data_blob_const(NULL, 0);
#endif
- outbody = data_blob_talloc(req->out.vector, NULL, 0x40);
+ out_guid_blob = data_blob_const(negprot_spnego_blob.data, 16);
+ status = GUID_from_ndr_blob(&out_guid_blob, &out_guid);
+ if (!NT_STATUS_IS_OK(status)) {
+ return smbd_smb2_request_error(req, status);
+ }
+
+ outbody = smbd_smb2_generate_outbody(req, 0x40);
if (outbody.data == NULL) {
return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
}
SSVAL(outbody.data, 0x04, dialect); /* dialect revision */
SSVAL(outbody.data, 0x06, 0); /* reserved */
memcpy(outbody.data + 0x08,
- negprot_spnego_blob.data, 16); /* server guid */
+ out_guid_blob.data, 16); /* server guid */
SIVAL(outbody.data, 0x18,
capabilities); /* capabilities */
SIVAL(outbody.data, 0x1C, max_trans); /* max transact size */
- SIVAL(outbody.data, 0x20, max_trans); /* max read size */
- SIVAL(outbody.data, 0x24, max_trans); /* max write size */
- SBVAL(outbody.data, 0x28, 0); /* system time */
+ SIVAL(outbody.data, 0x20, max_read); /* max read size */
+ SIVAL(outbody.data, 0x24, max_write); /* max write size */
+ SBVAL(outbody.data, 0x28, now); /* system time */
SBVAL(outbody.data, 0x30, 0); /* server start time */
SSVAL(outbody.data, 0x38,
security_offset); /* security buffer offset */
req->sconn->using_smb2 = true;
+ if (dialect != SMB2_DIALECT_REVISION_2FF) {
+ struct smbXsrv_connection *conn = req->sconn->conn;
+
+ status = smbXsrv_connection_init_tables(conn, protocol);
+ if (!NT_STATUS_IS_OK(status)) {
+ return smbd_smb2_request_error(req, status);
+ }
+
+ conn->smb2.client.capabilities = in_capabilities;
+ conn->smb2.client.security_mode = in_security_mode;
+ conn->smb2.client.guid = in_guid;
+ conn->smb2.client.num_dialects = dialect_count;
+ conn->smb2.client.dialects = talloc_array(conn,
+ uint16_t,
+ dialect_count);
+ if (conn->smb2.client.dialects == NULL) {
+ return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
+ }
+ for (c=0; c < dialect_count; c++) {
+ conn->smb2.client.dialects[c] = SVAL(indyn, c*2);
+ }
+
+ conn->smb2.server.capabilities = capabilities;
+ conn->smb2.server.security_mode = security_mode;
+ conn->smb2.server.guid = out_guid;
+ conn->smb2.server.dialect = dialect;
+ conn->smb2.server.max_trans = max_trans;
+ conn->smb2.server.max_read = max_read;
+ conn->smb2.server.max_write = max_write;
+
+ req->sconn->smb2.max_trans = max_trans;
+ req->sconn->smb2.max_read = max_read;
+ req->sconn->smb2.max_write = max_write;
+ }
+
return smbd_smb2_request_done(req, outbody, &outdyn);
}
git.samba.org / metze / samba / wip.git / blobdiff