libcli/smb: move smb_seal.c to the toplevel

metze

Autobuild-User: Stefan Metzmacher <metze@samba.org>
Autobuild-Date: Fri Oct 21 10:22:39 CEST 2011 on sn-devel-104

4 files changed, 3 insertions, 432 deletions

diff --git a/source3/libsmb/async_smb.c b/source3/libsmb/async_smb.c
index 43dfa22b9d..3786638a0d 100644
--- a/source3/libsmb/async_smb.c
+++ b/source3/libsmb/async_smb.c
@@ -23,7 +23,7 @@
 #include "../lib/util/tevent_ntstatus.h"
 #include "../lib/util/tevent_unix.h"
 #include "async_smb.h"
-#include "smb_crypt.h"
+#include "../libcli/smb/smb_seal.h"
 #include "libsmb/nmblib.h"
 #include "read_smb.h"
 
diff --git a/source3/libsmb/clientgen.c b/source3/libsmb/clientgen.c
index e8f4fbd2fc..f5123eaf65 100644
--- a/source3/libsmb/clientgen.c
+++ b/source3/libsmb/clientgen.c
@@ -22,7 +22,7 @@
 #include "libsmb/libsmb.h"
 #include "../lib/util/tevent_ntstatus.h"
 #include "smb_signing.h"
-#include "smb_crypt.h"
+#include "../libcli/smb/smb_seal.h"
 #include "async_smb.h"
 
 /*******************************************************************
diff --git a/source3/libsmb/clifsinfo.c b/source3/libsmb/clifsinfo.c
index 2469200353..a5b7838b2a 100644
--- a/source3/libsmb/clifsinfo.c
+++ b/source3/libsmb/clifsinfo.c
@@ -24,7 +24,7 @@
 #include "../auth/ntlmssp/ntlmssp.h"
 #include "../lib/util/tevent_ntstatus.h"
 #include "async_smb.h"
-#include "smb_crypt.h"
+#include "../libcli/smb/smb_seal.h"
 #include "trans2.h"
 #include "ntlmssp_wrap.h"
 #include "auth/gensec/gensec.h"
diff --git a/source3/libsmb/smb_seal.c b/source3/libsmb/smb_seal.c
deleted file mode 100644
index e27f609d39..0000000000
--- a/source3/libsmb/smb_seal.c
+++ /dev/null
@@ -1,429 +0,0 @@
-/* 
-   Unix SMB/CIFS implementation.
-   SMB Transport encryption (sealing) code.
-   Copyright (C) Jeremy Allison 2007.
-   
-   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 3 of the License, or
-   (at your option) any later version.
-   
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   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, see <http://www.gnu.org/licenses/>.
-*/
-
-#include "includes.h"
-#include "smb_crypt.h"
-#include "libsmb/libsmb.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(const uint8_t *buf, uint16_t *p_enc_ctx_num)
-{
-	if (smb_len_nbt(buf) < 8) {
-		return NT_STATUS_INVALID_BUFFER_SIZE;
-	}
-
-	if (buf[4] == 0xFF) {
-		if (buf[5] == 'S' && buf [6] == 'M' && buf[7] == 'B') {
-			/* Not an encrypted buffer. */
-			return NT_STATUS_NOT_FOUND;
-		}
-		if (buf[5] == 'E') {
-			*p_enc_ctx_num = SVAL(buf,6);
-			return NT_STATUS_OK;
-		}
-	}
-	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)
-{
-	return ((es != NULL) && es->enc_on);
-}
-
-/******************************************************************************
- Generic code for client and server.
- GENSEC decrypt an incoming buffer.
-******************************************************************************/
-
-static NTSTATUS common_gensec_decrypt_buffer(struct gensec_security *gensec,
-					     char *buf)
-{
-	NTSTATUS status;
-	size_t buf_len = smb_len_nbt(buf) + 4; /* Don't forget the 4 length bytes. */
-	DATA_BLOB in_buf, out_buf;
-	TALLOC_CTX *frame;
-
-	if (buf_len < 8) {
-		return NT_STATUS_BUFFER_TOO_SMALL;
-	}
-
-	frame = talloc_stackframe();
-
-	in_buf = data_blob_const(buf + 8, buf_len - 8);
-
-	status = gensec_unwrap(gensec, frame, &in_buf, &out_buf);
-
-	if (!NT_STATUS_IS_OK(status)) {
-		DEBUG(0,("common_gensec_decrypt_buffer: gensec_unwrap failed. Error %s\n",
-			 nt_errstr(status)));
-		TALLOC_FREE(frame);
-		return status;
-	}
-
-	if (out_buf.length > in_buf.length) {
-		DEBUG(0,("common_gensec_decrypt_buffer: gensec_unwrap size (%u) too large (%u) !\n",
-			(unsigned int)out_buf.length,
-			(unsigned int)in_buf.length ));
-		TALLOC_FREE(frame);
-		return NT_STATUS_INVALID_PARAMETER;
-	}
-
-	memcpy(buf + 8, out_buf.data, out_buf.length);
-
-	/* Reset the length and overwrite the header. */
-	smb_setlen_nbt(buf, out_buf.length + 4);
-
-	TALLOC_FREE(frame);
-
-	return NT_STATUS_OK;
-}
-
-/******************************************************************************
- Generic code for client and server.
- NTLM encrypt an outgoing buffer. Return the encrypted pointer in ppbuf_out.
-******************************************************************************/
-
-static NTSTATUS common_gensec_encrypt_buffer(struct gensec_security *gensec,
-				      uint16_t enc_ctx_num,
-				      char *buf,
-				      char **ppbuf_out)
-{
-	NTSTATUS status;
-	DATA_BLOB in_buf, out_buf;
-	size_t buf_len = smb_len_nbt(buf) + 4; /* Don't forget the 4 length bytes. */
-	TALLOC_CTX *frame;
-
-	*ppbuf_out = NULL;
-
-	if (buf_len < 8) {
-		return NT_STATUS_BUFFER_TOO_SMALL;
-	}
-	in_buf = data_blob_const(buf + 8, buf_len - 8);
-
-	frame = talloc_stackframe();
-
-	status = gensec_wrap(gensec, frame, &in_buf, &out_buf);
-	if (!NT_STATUS_IS_OK(status)) {
-		DEBUG(0,("common_gensec_encrypt_buffer: gensec_wrap failed. Error %s\n",
-			 nt_errstr(status)));
-		TALLOC_FREE(frame);
-		return status;
-	}
-
-	*ppbuf_out = (char *)malloc(out_buf.length + 8); /* We know this can't wrap. */
-	if (!*ppbuf_out) {
-		TALLOC_FREE(frame);
-		return NT_STATUS_NO_MEMORY;
-	}
-
-	memcpy(*ppbuf_out+8, out_buf.data, out_buf.length);
-	smb_set_enclen(*ppbuf_out, out_buf.length + 4, enc_ctx_num);
-
-	TALLOC_FREE(frame);
-
-	return NT_STATUS_OK;
-}
-
-/******************************************************************************
- Generic code for client and server.
- gss-api decrypt an incoming buffer. We insist that the size of the
- unwrapped buffer must be smaller or identical to the incoming buffer.
-******************************************************************************/
-
-#if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
-static NTSTATUS common_gss_decrypt_buffer(struct smb_tran_enc_state_gss *gss_state, char *buf)
-{
-	gss_ctx_id_t gss_ctx = gss_state->gss_ctx;
-	OM_uint32 ret = 0;
-	OM_uint32 minor = 0;
-	int flags_got = 0;
-	gss_buffer_desc in_buf, out_buf;
-	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;
-	}
-
-	in_buf.value = buf + 8;
-	in_buf.length = buf_len - 8;
-
-	ret = gss_unwrap(&minor,
-			gss_ctx,
-			&in_buf,
-			&out_buf,
-			&flags_got,		/* did we get sign+seal ? */
-			(gss_qop_t *) NULL);	
-
-	if (ret != GSS_S_COMPLETE) {
-		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_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);
-		return NT_STATUS_INVALID_PARAMETER;
-	}
-
-	memcpy(buf + 8, out_buf.value, out_buf.length);
-	/* 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;
-}
-
-/******************************************************************************
- Generic code for client and server.
- gss-api encrypt an outgoing buffer. Return the alloced encrypted pointer in buf_out.
-******************************************************************************/
-
-static NTSTATUS common_gss_encrypt_buffer(struct smb_tran_enc_state_gss *gss_state,
-					uint16_t enc_ctx_num,
-		 			char *buf,
-					char **ppbuf_out)
-{
-	gss_ctx_id_t gss_ctx = gss_state->gss_ctx;
-	OM_uint32 ret = 0;
-	OM_uint32 minor = 0;
-	int flags_got = 0;
-	gss_buffer_desc in_buf, out_buf;
-	size_t buf_len = smb_len_nbt(buf) + 4; /* Don't forget the 4 length bytes. */
-
-	*ppbuf_out = NULL;
-
-	if (buf_len < 8) {
-		return NT_STATUS_BUFFER_TOO_SMALL;
-	}
-
-	in_buf.value = buf + 8;
-	in_buf.length = buf_len - 8;
-
-	ret = gss_wrap(&minor,
-			gss_ctx,
-			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) {
-		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) {
-		/* Sign+seal not supported. */
-		gss_release_buffer(&minor, &out_buf);
-		return NT_STATUS_NOT_SUPPORTED;
-	}
-
-	/* Ya see - this is why I *hate* gss-api. I don't 
-	 * want to have to malloc another buffer of the
-	 * same size + 8 bytes just to get a continuous
-	 * header + buffer, but gss won't let me pass in
-	 * a pre-allocated buffer. Bastards (and you know
-	 * who you are....). I might fix this by
-	 * going to "encrypt_and_send" passing in a file
-	 * descriptor and doing scatter-gather write with
-	 * TCP cork on Linux. But I shouldn't have to
-	 * bother :-*(. JRA.
-	 */
-
-	*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;
-	}
-
-	memcpy(*ppbuf_out+8, out_buf.value, out_buf.length);
-	smb_set_enclen(*ppbuf_out, out_buf.length + 4, enc_ctx_num);
-
-	gss_release_buffer(&minor, &out_buf);
-	return NT_STATUS_OK;
-}
-#endif
-
-/******************************************************************************
- Generic code for client and server.
- Encrypt an outgoing buffer. Return the alloced encrypted pointer in buf_out.
-******************************************************************************/
-
-NTSTATUS common_encrypt_buffer(struct smb_trans_enc_state *es, char *buffer, char **buf_out)
-{
-	if (!common_encryption_on(es)) {
-		/* Not encrypting. */
-		*buf_out = buffer;
-		return NT_STATUS_OK;
-	}
-
-	switch (es->smb_enc_type) {
-		case SMB_TRANS_ENC_NTLM:
-			return common_gensec_encrypt_buffer(es->s.gensec_security, 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);
-#endif
-		default:
-			return NT_STATUS_NOT_SUPPORTED;
-	}
-}
-
-/******************************************************************************
- Generic code for client and server.
- Decrypt an incoming SMB buffer. Replaces the data within it.
- New data must be less than or equal to the current length.
-******************************************************************************/
-
-NTSTATUS common_decrypt_buffer(struct smb_trans_enc_state *es, char *buf)
-{
-	if (!common_encryption_on(es)) {
-		/* Not decrypting. */
-		return NT_STATUS_OK;
-	}
-
-	switch (es->smb_enc_type) {
-		case SMB_TRANS_ENC_NTLM:
-			return common_gensec_decrypt_buffer(es->s.gensec_security, buf);
-#if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
-		case SMB_TRANS_ENC_GSS:
-			return common_gss_decrypt_buffer(es->s.gss_state, buf);
-#endif
-		default:
-			return NT_STATUS_NOT_SUPPORTED;
-	}
-}
-
-#if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
-/******************************************************************************
- Shutdown a gss encryption state.
-******************************************************************************/
-
-static void common_free_gss_state(struct smb_tran_enc_state_gss **pp_gss_state)
-{
-	OM_uint32 minor = 0;
-	struct smb_tran_enc_state_gss *gss_state = *pp_gss_state;
-
-	if (gss_state->creds != GSS_C_NO_CREDENTIAL) {
-		gss_release_cred(&minor, &gss_state->creds);
-	}
-	if (gss_state->gss_ctx != GSS_C_NO_CONTEXT) {
-		gss_delete_sec_context(&minor, &gss_state->gss_ctx, NULL);
-	}
-	SAFE_FREE(*pp_gss_state);
-}
-#endif
-
-/******************************************************************************
- Shutdown an encryption state.
-******************************************************************************/
-
-void common_free_encryption_state(struct smb_trans_enc_state **pp_es)
-{
-	struct smb_trans_enc_state *es = *pp_es;
-
-	if (es == NULL) {
-		return;
-	}
-
-	if (es->smb_enc_type == SMB_TRANS_ENC_NTLM) {
-		if (es->s.gensec_security) {
-			TALLOC_FREE(es->s.gensec_security);
-		}
-	}
-#if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
-	if (es->smb_enc_type == SMB_TRANS_ENC_GSS) {
-		/* Free the gss context handle. */
-		if (es->s.gss_state) {
-			common_free_gss_state(&es->s.gss_state);
-		}
-	}
-#endif
-	SAFE_FREE(es);
-	*pp_es = NULL;
-}
-
-/******************************************************************************
- Free an encryption-allocated buffer.
-******************************************************************************/
-
-void common_free_enc_buffer(struct smb_trans_enc_state *es, char *buf)
-{
-	uint16_t enc_ctx_num;
-
-	if (!common_encryption_on(es)) {
-		return;
-	}
-
-	if (!NT_STATUS_IS_OK(get_enc_ctx_num((const uint8_t *)buf,
-			&enc_ctx_num))) {
-		return;
-	}
-
-	SAFE_FREE(buf);
-}