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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
+#include "../auth/ntlmssp/ntlmssp.h"
+#include "smb_crypt.h"
+#include "libsmb/libsmb.h"
+#include "ntlmssp_wrap.h"
+#include "libcli/auth/krb5_wrap.h"
+#include "auth/gensec/gensec.h"
+
+#undef malloc
/******************************************************************************
Pull out the encryption context for this packet. 0 means global context.
******************************************************************************/
-NTSTATUS get_enc_ctx_num(char *buf, uint16 *p_enc_ctx_num)
+NTSTATUS get_enc_ctx_num(const uint8_t *buf, uint16_t *p_enc_ctx_num)
{
- if (smb_len(buf) < 8) {
+ if (smb_len_nbt(buf) < 8) {
return NT_STATUS_INVALID_BUFFER_SIZE;
}
- if (buf[4] == (char)0xFF) {
+ if (buf[4] == 0xFF) {
if (buf[5] == 'S' && buf [6] == 'M' && buf[7] == 'B') {
/* Not an encrypted buffer. */
return NT_STATUS_NOT_FOUND;
return NT_STATUS_INVALID_NETWORK_RESPONSE;
}
+/*******************************************************************
+ Set the length and marker of an encrypted smb packet.
+********************************************************************/
+
+static void smb_set_enclen(char *buf,int len,uint16_t enc_ctx_num)
+{
+ _smb_setlen_nbt(buf,len);
+
+ SCVAL(buf,4,0xFF);
+ SCVAL(buf,5,'E');
+ SSVAL(buf,6,enc_ctx_num);
+}
+
/******************************************************************************
Generic code for client and server.
Is encryption turned on ?
******************************************************************************/
-BOOL common_encryption_on(struct smb_trans_enc_state *es)
+bool common_encryption_on(struct smb_trans_enc_state *es)
{
return ((es != NULL) && es->enc_on);
}
output, so cope with the same for compatibility.
******************************************************************************/
-NTSTATUS common_ntlm_decrypt_buffer(NTLMSSP_STATE *ntlmssp_state, char *buf)
+static NTSTATUS common_ntlm_decrypt_buffer(struct auth_ntlmssp_state *auth_ntlmssp_state, char *buf)
{
NTSTATUS status;
- size_t buf_len = smb_len(buf) + 4; /* Don't forget the 4 length bytes. */
+ size_t buf_len = smb_len_nbt(buf) + 4; /* Don't forget the 4 length bytes. */
size_t data_len;
char *inbuf;
DATA_BLOB sig;
return NT_STATUS_BUFFER_TOO_SMALL;
}
- inbuf = smb_xmemdup(buf, buf_len);
+ inbuf = (char *)smb_xmemdup(buf, buf_len);
/* Adjust for the signature. */
data_len = buf_len - 8 - NTLMSSP_SIG_SIZE;
/* Point at the signature. */
sig = data_blob_const(inbuf+8, NTLMSSP_SIG_SIZE);
- status = ntlmssp_unseal_packet(ntlmssp_state,
+ status = gensec_unseal_packet(auth_ntlmssp_state->gensec_security,
(unsigned char *)inbuf + 8 + NTLMSSP_SIG_SIZE, /* 4 byte len + 0xFF 'E' <enc> <ctx> */
data_len,
(unsigned char *)inbuf + 8 + NTLMSSP_SIG_SIZE,
memcpy(buf + 8, inbuf + 8 + NTLMSSP_SIG_SIZE, data_len);
- /* Reset the length. */
- smb_setlen(inbuf, buf, data_len + 4);
+ /* Reset the length and overwrite the header. */
+ smb_setlen_nbt(buf,data_len + 4);
SAFE_FREE(inbuf);
return NT_STATUS_OK;
output, so do the same for compatibility.
******************************************************************************/
-NTSTATUS common_ntlm_encrypt_buffer(NTLMSSP_STATE *ntlmssp_state,
- uint16 enc_ctx_num,
+static NTSTATUS common_ntlm_encrypt_buffer(struct auth_ntlmssp_state *auth_ntlmssp_state,
+ uint16_t enc_ctx_num,
char *buf,
char **ppbuf_out)
{
NTSTATUS status;
char *buf_out;
- size_t data_len = smb_len(buf) - 4; /* Ignore the 0xFF SMB bytes. */
+ size_t data_len = smb_len_nbt(buf) - 4; /* Ignore the 0xFF SMB bytes. */
DATA_BLOB sig;
-
+ TALLOC_CTX *frame;
*ppbuf_out = NULL;
if (data_len == 0) {
return NT_STATUS_BUFFER_TOO_SMALL;
}
+ frame = talloc_stackframe();
/*
- * We know smb_len can't return a value > 128k, so no int overflow
+ * We know smb_len_nbt can't return a value > 128k, so no int overflow
* check needed.
*/
- buf_out = SMB_XMALLOC_ARRAY(char, 8 + NTLMSSP_SIG_SIZE + data_len);
+ buf_out = (char *)malloc(8 + NTLMSSP_SIG_SIZE + data_len);
+ if (buf_out == NULL) {
+ TALLOC_FREE(frame);
+ return NT_STATUS_NO_MEMORY;
+ }
/* Copy the data from the original buffer. */
memcpy(buf_out + 8 + NTLMSSP_SIG_SIZE, buf + 8, data_len);
- smb_set_enclen(buf_out, smb_len(buf) + NTLMSSP_SIG_SIZE, enc_ctx_num);
+ smb_set_enclen(buf_out, smb_len_nbt(buf) + NTLMSSP_SIG_SIZE, enc_ctx_num);
- sig = data_blob(NULL, NTLMSSP_SIG_SIZE);
+ ZERO_STRUCT(sig);
- status = ntlmssp_seal_packet(ntlmssp_state,
+ status = gensec_seal_packet(auth_ntlmssp_state->gensec_security,
+ frame,
(unsigned char *)buf_out + 8 + NTLMSSP_SIG_SIZE, /* 4 byte len + 0xFF 'S' <enc> <ctx> */
data_len,
(unsigned char *)buf_out + 8 + NTLMSSP_SIG_SIZE,
&sig);
if (!NT_STATUS_IS_OK(status)) {
- data_blob_free(&sig);
+ talloc_free(frame);
SAFE_FREE(buf_out);
return status;
}
/* First 16 data bytes are signature for SSPI compatibility. */
memcpy(buf_out + 8, sig.data, NTLMSSP_SIG_SIZE);
+ talloc_free(frame);
*ppbuf_out = buf_out;
return NT_STATUS_OK;
}
OM_uint32 minor = 0;
int flags_got = 0;
gss_buffer_desc in_buf, out_buf;
- size_t buf_len = smb_len(buf) + 4; /* Don't forget the 4 length bytes. */
+ size_t buf_len = smb_len_nbt(buf) + 4; /* Don't forget the 4 length bytes. */
if (buf_len < 8) {
return NT_STATUS_BUFFER_TOO_SMALL;
(gss_qop_t *) NULL);
if (ret != GSS_S_COMPLETE) {
- ADS_STATUS adss = ADS_ERROR_GSS(ret, minor);
- DEBUG(0,("common_gss_encrypt_buffer: gss_unwrap failed. Error %s\n",
- ads_errstr(adss) ));
- return map_nt_error_from_gss(ret, minor);
+ NTSTATUS status = NT_STATUS_ACCESS_DENIED;
+ char *gss_err;
+
+ gss_err = gssapi_error_string(talloc_tos(),
+ ret, minor,
+ GSS_C_NULL_OID);
+ DEBUG(0,("common_gss_decrypt_buffer: gss_unwrap failed. "
+ "Error [%d/%d] - %s - %s\n",
+ ret, minor, nt_errstr(status),
+ gss_err ? gss_err : "<unknown>"));
+ talloc_free(gss_err);
+
+ return status;
}
if (out_buf.length > in_buf.length) {
- DEBUG(0,("common_gss_encrypt_buffer: gss_unwrap size (%u) too large (%u) !\n",
+ DEBUG(0,("common_gss_decrypt_buffer: gss_unwrap size (%u) too large (%u) !\n",
(unsigned int)out_buf.length,
(unsigned int)in_buf.length ));
gss_release_buffer(&minor, &out_buf);
}
memcpy(buf + 8, out_buf.value, out_buf.length);
- smb_setlen(out_buf.value, buf, out_buf.length + 4);
+ /* Reset the length and overwrite the header. */
+ smb_setlen_nbt(buf, out_buf.length + 4);
gss_release_buffer(&minor, &out_buf);
return NT_STATUS_OK;
******************************************************************************/
static NTSTATUS common_gss_encrypt_buffer(struct smb_tran_enc_state_gss *gss_state,
- uint16 enc_ctx_num,
+ uint16_t enc_ctx_num,
char *buf,
char **ppbuf_out)
{
OM_uint32 minor = 0;
int flags_got = 0;
gss_buffer_desc in_buf, out_buf;
- size_t buf_len = smb_len(buf) + 4; /* Don't forget the 4 length bytes. */
+ size_t buf_len = smb_len_nbt(buf) + 4; /* Don't forget the 4 length bytes. */
*ppbuf_out = NULL;
ret = gss_wrap(&minor,
gss_ctx,
- True, /* we want sign+seal. */
+ true, /* we want sign+seal. */
GSS_C_QOP_DEFAULT,
&in_buf,
&flags_got, /* did we get sign+seal ? */
&out_buf);
if (ret != GSS_S_COMPLETE) {
- ADS_STATUS adss = ADS_ERROR_GSS(ret, minor);
- DEBUG(0,("common_gss_encrypt_buffer: gss_wrap failed. Error %s\n",
- ads_errstr(adss) ));
- return map_nt_error_from_gss(ret, minor);
+ NTSTATUS status = NT_STATUS_ACCESS_DENIED;
+ char *gss_err;
+
+ gss_err = gssapi_error_string(talloc_tos(),
+ ret, minor,
+ GSS_C_NULL_OID);
+ DEBUG(0,("common_gss_encrypt_buffer: gss_unwrap failed. "
+ "Error [%d/%d] - %s - %s\n",
+ ret, minor, nt_errstr(status),
+ gss_err ? gss_err : "<unknown>"));
+ talloc_free(gss_err);
+
+ return status;
}
if (!flags_got) {
* bother :-*(. JRA.
*/
- *ppbuf_out = SMB_MALLOC(out_buf.length + 8); /* We know this can't wrap. */
+ *ppbuf_out = (char *)malloc(out_buf.length + 8); /* We know this can't wrap. */
if (!*ppbuf_out) {
gss_release_buffer(&minor, &out_buf);
return NT_STATUS_NO_MEMORY;
switch (es->smb_enc_type) {
case SMB_TRANS_ENC_NTLM:
- return common_ntlm_encrypt_buffer(es->s.ntlmssp_state, es->enc_ctx_num, buffer, buf_out);
+ return common_ntlm_encrypt_buffer(es->s.auth_ntlmssp_state, es->enc_ctx_num, buffer, buf_out);
#if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
case SMB_TRANS_ENC_GSS:
return common_gss_encrypt_buffer(es->s.gss_state, es->enc_ctx_num, buffer, buf_out);
switch (es->smb_enc_type) {
case SMB_TRANS_ENC_NTLM:
- return common_ntlm_decrypt_buffer(es->s.ntlmssp_state, buf);
+ return common_ntlm_decrypt_buffer(es->s.auth_ntlmssp_state, buf);
#if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
case SMB_TRANS_ENC_GSS:
return common_gss_decrypt_buffer(es->s.gss_state, buf);
}
if (es->smb_enc_type == SMB_TRANS_ENC_NTLM) {
- if (es->s.ntlmssp_state) {
- ntlmssp_end(&es->s.ntlmssp_state);
+ if (es->s.auth_ntlmssp_state) {
+ TALLOC_FREE(es->s.auth_ntlmssp_state);
}
}
#if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
void common_free_enc_buffer(struct smb_trans_enc_state *es, char *buf)
{
- if (!common_encryption_on(es)) {
- return;
- }
+ uint16_t enc_ctx_num;
- if (es->smb_enc_type == SMB_TRANS_ENC_NTLM) {
- SAFE_FREE(buf);
+ if (!common_encryption_on(es)) {
return;
}
-#if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
- if (es->smb_enc_type == SMB_TRANS_ENC_GSS) {
- OM_uint32 min;
- gss_buffer_desc rel_buf;
- rel_buf.value = buf;
- rel_buf.length = smb_len(buf) + 4;
- gss_release_buffer(&min, &rel_buf);
- }
-#endif
-}
-
-/******************************************************************************
- Client side encryption.
-******************************************************************************/
-
-/******************************************************************************
- Is client encryption on ?
-******************************************************************************/
-
-BOOL cli_encryption_on(struct cli_state *cli)
-{
- /* If we supported multiple encrytion contexts
- * here we'd look up based on tid.
- */
- return common_encryption_on(cli->trans_enc_state);
-}
-
-/******************************************************************************
- Shutdown a client encryption state.
-******************************************************************************/
-
-void cli_free_encryption_context(struct cli_state *cli)
-{
- common_free_encryption_state(&cli->trans_enc_state);
-}
-
-/******************************************************************************
- Free an encryption-allocated buffer.
-******************************************************************************/
-
-void cli_free_enc_buffer(struct cli_state *cli, char *buf)
-{
- /* We know this is an smb buffer, and we
- * didn't malloc, only copy, for a keepalive,
- * so ignore session keepalives. */
-
- if(CVAL(buf,0) == SMBkeepalive) {
+ if (!NT_STATUS_IS_OK(get_enc_ctx_num((const uint8_t *)buf,
+ &enc_ctx_num))) {
return;
}
- /* If we supported multiple encrytion contexts
- * here we'd look up based on tid.
- */
- common_free_enc_buffer(cli->trans_enc_state, buf);
-}
-
-/******************************************************************************
- Decrypt an incoming buffer.
-******************************************************************************/
-
-NTSTATUS cli_decrypt_message(struct cli_state *cli)
-{
- NTSTATUS status;
- uint16 enc_ctx_num;
-
- /* Ignore session keepalives. */
- if(CVAL(cli->inbuf,0) == SMBkeepalive) {
- return NT_STATUS_OK;
- }
-
- status = get_enc_ctx_num(cli->inbuf, &enc_ctx_num);
- if (!NT_STATUS_IS_OK(status)) {
- return status;
- }
-
- if (enc_ctx_num != cli->trans_enc_state->enc_ctx_num) {
- return NT_STATUS_INVALID_HANDLE;
- }
-
- return common_decrypt_buffer(cli->trans_enc_state, cli->inbuf);
-}
-
-/******************************************************************************
- Encrypt an outgoing buffer. Return the encrypted pointer in buf_out.
-******************************************************************************/
-
-NTSTATUS cli_encrypt_message(struct cli_state *cli, char **buf_out)
-{
- /* Ignore session keepalives. */
- if(CVAL(cli->outbuf,0) == SMBkeepalive) {
- return NT_STATUS_OK;
- }
-
- /* If we supported multiple encrytion contexts
- * here we'd look up based on tid.
- */
- return common_encrypt_buffer(cli->trans_enc_state, cli->outbuf, buf_out);
+ SAFE_FREE(buf);
}
git.samba.org / rusty / samba.git / blobdiff