*/
#include "includes.h"
+#include "smbd/smbd.h"
#include "smbd/globals.h"
#include "../libcli/smb/smb_common.h"
/*
* this is the entry point if SMB2 is selected via
- * the SMB negprot
+ * the SMB negprot and the given dialect.
*/
-void reply_smb2002(struct smb_request *req, uint16_t choice)
+static void reply_smb20xx(struct smb_request *req, uint16_t dialect)
{
uint8_t *smb2_inbuf;
uint8_t *smb2_hdr;
SSVAL(smb2_body, 0x00, 0x0024); /* struct size */
SSVAL(smb2_body, 0x02, 0x0001); /* dialect count */
- SSVAL(smb2_dyn, 0x00, 0x0202); /* dialect 2.002 */
+ SSVAL(smb2_dyn, 0x00, dialect);
req->outbuf = NULL;
- smbd_smb2_first_negprot(smbd_server_conn, smb2_inbuf, len);
+ smbd_smb2_first_negprot(req->sconn, smb2_inbuf, len);
return;
}
+/*
+ * this is the entry point if SMB2 is selected via
+ * the SMB negprot and the "SMB 2.002" dialect.
+ */
+void reply_smb2002(struct smb_request *req, uint16_t choice)
+{
+ reply_smb20xx(req, SMB2_DIALECT_REVISION_202);
+}
+
+/*
+ * this is the entry point if SMB2 is selected via
+ * the SMB negprot and the "SMB 2.???" dialect.
+ */
+void reply_smb20ff(struct smb_request *req, uint16_t choice)
+{
+ req->sconn->smb2.negprot_2ff = true;
+ reply_smb20xx(req, SMB2_DIALECT_REVISION_2FF);
+}
+
NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req)
{
+ NTSTATUS status;
const uint8_t *inbody;
const uint8_t *indyn = NULL;
int i = req->current_idx;
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;
-
-/* TODO: drop the connection with INVALI_PARAMETER */
-
- if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
- return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+ 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();
+
+ status = smbd_smb2_request_verify_sizes(req, 0x24);
+ if (!NT_STATUS_IS_OK(status)) {
+ return smbd_smb2_request_error(req, status);
}
-
inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
- body_size = SVAL(inbody, 0x00);
- if (body_size != expected_body_size) {
- return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
- }
-
dialect_count = SVAL(inbody, 0x02);
if (dialect_count == 0) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
indyn = (const uint8_t *)req->in.vector[i+2].iov_base;
- for (c=0; c < dialect_count; c++) {
+ for (c=0; protocol == PROTOCOL_NONE && c < dialect_count; c++) {
+ if (lp_maxprotocol() < PROTOCOL_SMB2_24) {
+ break;
+ }
+ if (lp_minprotocol() > PROTOCOL_SMB2_24) {
+ break;
+ }
+
+ dialect = SVAL(indyn, c*2);
+ if (dialect == SMB2_DIALECT_REVISION_224) {
+ protocol = PROTOCOL_SMB2_24;
+ break;
+ }
+ }
+
+ for (c=0; protocol == PROTOCOL_NONE && c < dialect_count; c++) {
+ if (lp_maxprotocol() < PROTOCOL_SMB2_22) {
+ break;
+ }
+ if (lp_minprotocol() > PROTOCOL_SMB2_22) {
+ break;
+ }
+
+ dialect = SVAL(indyn, c*2);
+ if (dialect == SMB2_DIALECT_REVISION_222) {
+ protocol = PROTOCOL_SMB2_22;
+ break;
+ }
+ }
+
+ for (c=0; protocol == PROTOCOL_NONE && c < dialect_count; c++) {
+ if (lp_maxprotocol() < PROTOCOL_SMB2_10) {
+ break;
+ }
+ if (lp_minprotocol() > PROTOCOL_SMB2_10) {
+ break;
+ }
+
+ 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) {
+ break;
+ }
+ if (lp_minprotocol() > PROTOCOL_SMB2_02) {
+ break;
+ }
+
dialect = SVAL(indyn, c*2);
if (dialect == SMB2_DIALECT_REVISION_202) {
+ protocol = PROTOCOL_SMB2_02;
break;
}
}
- if (dialect != SMB2_DIALECT_REVISION_202) {
- return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
+ for (c=0; protocol == PROTOCOL_NONE && c < dialect_count; c++) {
+ if (lp_maxprotocol() < PROTOCOL_SMB2_10) {
+ break;
+ }
+
+ dialect = SVAL(indyn, c*2);
+ if (dialect == SMB2_DIALECT_REVISION_2FF) {
+ if (req->sconn->smb2.negprot_2ff) {
+ req->sconn->smb2.negprot_2ff = false;
+ protocol = PROTOCOL_SMB2_10;
+ break;
+ }
+ }
+ }
+
+ if (protocol == PROTOCOL_NONE) {
+ return smbd_smb2_request_error(req, NT_STATUS_NOT_SUPPORTED);
}
- set_Protocol(PROTOCOL_SMB2);
+ if (dialect != SMB2_DIALECT_REVISION_2FF) {
+ set_Protocol(protocol);
+ }
if (get_remote_arch() != RA_SAMBA) {
set_remote_arch(RA_VISTA);
}
/* negprot_spnego() returns a the server guid in the first 16 bytes */
- negprot_spnego_blob = negprot_spnego();
+ negprot_spnego_blob = negprot_spnego(req, req->sconn);
if (negprot_spnego_blob.data == NULL) {
return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
}
- talloc_steal(req, negprot_spnego_blob.data);
if (negprot_spnego_blob.length < 16) {
return smbd_smb2_request_error(req, NT_STATUS_INTERNAL_ERROR);
}
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;
}
+ /*
+ * Unless we implement SMB2_CAP_LARGE_MTU,
+ * 0x10000 (65536) is the maximum allowed message size
+ */
+ max_limit = 0x10000;
+
+ max_trans = MIN(max_limit, max_trans);
+ max_read = MIN(max_limit, max_read);
+ max_write = MIN(max_limit, max_write);
+
security_offset = SMB2_HDR_BODY + 0x40;
#if 1
negprot_spnego_blob.data, 16); /* server guid */
SIVAL(outbody.data, 0x18,
capabilities); /* capabilities */
- SIVAL(outbody.data, 0x1C, 0x00010000); /* max transact size */
- SIVAL(outbody.data, 0x20, 0x00010000); /* max read size */
- SIVAL(outbody.data, 0x24, 0x00010000); /* max write size */
+ 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 */
SBVAL(outbody.data, 0x30, 0); /* server start time */
SSVAL(outbody.data, 0x38,
outdyn = security_buffer;
+ req->sconn->using_smb2 = true;
+ 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 / mat / samba.git / blobdiff