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-rw-r--r--source3/include/client.h1
-rw-r--r--source3/lib/util_sock.c4
-rw-r--r--source3/libsmb/clientgen.c13
-rw-r--r--source3/libsmb/smb_seal.c299
4 files changed, 224 insertions, 93 deletions
diff --git a/source3/include/client.h b/source3/include/client.h
index 97922ba232..0f268834c6 100644
--- a/source3/include/client.h
+++ b/source3/include/client.h
@@ -83,6 +83,7 @@ enum smb_trans_enc_type { SMB_TRANS_ENC_NTLM, SMB_TRANS_ENC_KRB5 };
struct smb_trans_enc_state {
enum smb_trans_enc_type smb_enc_type;
+ BOOL enc_on;
union {
NTLMSSP_STATE *ntlmssp_state;
#if defined(HAVE_GSSAPI_SUPPORT) && defined(HAVE_KRB5)
diff --git a/source3/lib/util_sock.c b/source3/lib/util_sock.c
index 296405edd3..755ad39261 100644
--- a/source3/lib/util_sock.c
+++ b/source3/lib/util_sock.c
@@ -789,13 +789,13 @@ BOOL send_smb(int fd, char *buffer)
if (ret <= 0) {
DEBUG(0,("Error writing %d bytes to client. %d. (%s)\n",
(int)len,(int)ret, strerror(errno) ));
- srv_free_buffer(buf_out);
+ srv_free_enc_buffer(buf_out);
return False;
}
nwritten += ret;
}
- srv_free_buffer(buf_out);
+ srv_free_enc_buffer(buf_out);
return True;
}
diff --git a/source3/libsmb/clientgen.c b/source3/libsmb/clientgen.c
index cdf36d9b9c..52ffdc24e7 100644
--- a/source3/libsmb/clientgen.c
+++ b/source3/libsmb/clientgen.c
@@ -164,6 +164,7 @@ BOOL cli_send_smb(struct cli_state *cli)
size_t len;
size_t nwritten=0;
ssize_t ret;
+ char *buf_out;
/* fd == -1 causes segfaults -- Tom (tom@ninja.nl) */
if (cli->fd == -1) {
@@ -172,7 +173,7 @@ BOOL cli_send_smb(struct cli_state *cli)
cli_calculate_sign_mac(cli);
- status = cli_encrypt_message(cli);
+ status = cli_encrypt_message(cli, &buf_out);
if (!NT_STATUS_IS_OK(status)) {
close(cli->fd);
cli->fd = -1;
@@ -182,11 +183,12 @@ BOOL cli_send_smb(struct cli_state *cli)
return False;
}
- len = smb_len(cli->outbuf) + 4;
+ len = smb_len(buf_out) + 4;
while (nwritten < len) {
- ret = write_socket(cli->fd,cli->outbuf+nwritten,len - nwritten);
+ ret = write_socket(cli->fd,buf_out+nwritten,len - nwritten);
if (ret <= 0) {
+ cli_free_enc_buffer(cli, buf_out);
close(cli->fd);
cli->fd = -1;
cli->smb_rw_error = WRITE_ERROR;
@@ -196,6 +198,9 @@ BOOL cli_send_smb(struct cli_state *cli)
}
nwritten += ret;
}
+
+ cli_free_enc_buffer(cli, buf_out);
+
/* Increment the mid so we can tell between responses. */
cli->mid++;
if (!cli->mid) {
@@ -447,6 +452,8 @@ void cli_shutdown(struct cli_state *cli)
SAFE_FREE(cli->inbuf);
cli_free_signing_context(cli);
+ cli_free_encryption_context(cli);
+
data_blob_free(&cli->secblob);
data_blob_free(&cli->user_session_key);
diff --git a/source3/libsmb/smb_seal.c b/source3/libsmb/smb_seal.c
index 90efa05f0b..2d1201ae7e 100644
--- a/source3/libsmb/smb_seal.c
+++ b/source3/libsmb/smb_seal.c
@@ -20,65 +20,22 @@
#include "includes.h"
-NTSTATUS cli_decrypt_message(struct cli_state *cli)
-{
- return NT_STATUS_OK;
-}
-
-NTSTATUS cli_encrypt_message(struct cli_state *cli)
-{
- return NT_STATUS_OK;
-}
-
-/* Server state if we're encrypting SMBs. If NULL then enc is off. */
-
-static struct smb_trans_enc_state *srv_trans_enc_state;
-
/******************************************************************************
- Is server encryption on ?
+ Generic code for client and server.
+ Is encryption turned on ?
******************************************************************************/
-BOOL srv_encryption_on(void)
+static BOOL internal_encryption_on(struct smb_trans_enc_state *es)
{
- return srv_trans_enc_state != NULL;
+ return ((es != NULL) && es->enc_on);
}
/******************************************************************************
- Free an encryption-allocated buffer.
-******************************************************************************/
-
-void srv_free_buffer(char *buf_out)
-{
- if (!srv_trans_enc_state) {
- return;
- }
-
- if (srv_trans_enc_state->smb_enc_type == SMB_TRANS_ENC_NTLM) {
- SAFE_FREE(buf_out);
- return;
- }
-
-#if defined(HAVE_GSSAPI_SUPPORT) && defined(HAVE_KRB5)
- /* gss-api free buffer.... */
-#endif
-}
-
-/******************************************************************************
- gss-api decrypt an incoming buffer.
-******************************************************************************/
-
-#if defined(HAVE_GSSAPI_SUPPORT) && defined(HAVE_KRB5)
-static NTSTATUS srv_gss_decrypt_buffer(gss_ctx_id_t context_handle, char *buf)
-{
- return NT_STATUS_NOT_SUPPORTED;
-}
-#endif
-
-/******************************************************************************
+ Generic code for client and server.
NTLM decrypt an incoming buffer.
******************************************************************************/
-static NTSTATUS srv_ntlm_decrypt_buffer(NTLMSSP_STATE *ntlmssp_state, char *buf)
+static NTSTATUS internal_ntlm_decrypt_buffer(NTLMSSP_STATE *ntlmssp_state, char *buf)
{
NTSTATUS status;
size_t orig_len = smb_len(buf);
@@ -109,42 +66,11 @@ static NTSTATUS srv_ntlm_decrypt_buffer(NTLMSSP_STATE *ntlmssp_state, char *buf)
}
/******************************************************************************
- Decrypt an incoming buffer.
-******************************************************************************/
-
-NTSTATUS srv_decrypt_buffer(char *buf)
-{
- if (!srv_trans_enc_state) {
- /* Not decrypting. */
- return NT_STATUS_OK;
- }
- if (srv_trans_enc_state->smb_enc_type == SMB_TRANS_ENC_NTLM) {
- return srv_ntlm_decrypt_buffer(srv_trans_enc_state->ntlmssp_state, buf);
- } else {
-#if defined(HAVE_GSSAPI_SUPPORT) && defined(HAVE_KRB5)
- return srv_gss_decrypt_buffer(srv_trans_enc_state->context_handle, buf);
-#else
- return NT_STATUS_NOT_SUPPORTED;
-#endif
- }
-}
-
-/******************************************************************************
- gss-api encrypt an outgoing buffer. Return the encrypted pointer in buf_out.
-******************************************************************************/
-
-#if defined(HAVE_GSSAPI_SUPPORT) && defined(HAVE_KRB5)
-static NTSTATUS srv_gss_encrypt_buffer(gss_ctx_id_t context_handle, char *buf, char **buf_out)
-{
- return NT_STATUS_NOT_SUPPORTED;
-}
-#endif
-
-/******************************************************************************
+ Generic code for client and server.
NTLM encrypt an outgoing buffer. Return the encrypted pointer in ppbuf_out.
******************************************************************************/
-static NTSTATUS srv_ntlm_encrypt_buffer(NTLMSSP_STATE *ntlmssp_state, char *buf, char **ppbuf_out)
+static NTSTATUS internal_ntlm_encrypt_buffer(NTLMSSP_STATE *ntlmssp_state, char *buf, char **ppbuf_out)
{
NTSTATUS status;
char *buf_out;
@@ -192,24 +118,221 @@ static NTSTATUS srv_ntlm_encrypt_buffer(NTLMSSP_STATE *ntlmssp_state, char *buf,
}
/******************************************************************************
- Encrypt an outgoing buffer. Return the encrypted pointer in buf_out.
+ Generic code for client and server.
+ gss-api decrypt an incoming buffer.
******************************************************************************/
-NTSTATUS srv_encrypt_buffer(char *buffer, char **buf_out)
+#if defined(HAVE_GSSAPI_SUPPORT) && defined(HAVE_KRB5)
+static NTSTATUS internal_gss_decrypt_buffer(gss_ctx_id_t context_handle, char *buf)
+{
+ return NT_STATUS_NOT_SUPPORTED;
+}
+#endif
+
+/******************************************************************************
+ Generic code for client and server.
+ gss-api encrypt an outgoing buffer. Return the alloced encrypted pointer in buf_out.
+******************************************************************************/
+
+#if defined(HAVE_GSSAPI_SUPPORT) && defined(HAVE_KRB5)
+static NTSTATUS srv_gss_encrypt_buffer(gss_ctx_id_t context_handle, char *buf, char **buf_out)
{
- if (!srv_trans_enc_state) {
+ return NT_STATUS_NOT_SUPPORTED;
+}
+#endif
+
+/******************************************************************************
+ Generic code for client and server.
+ Encrypt an outgoing buffer. Return the alloced encrypted pointer in buf_out.
+******************************************************************************/
+
+static NTSTATUS internal_encrypt_buffer(struct smb_trans_enc_state *es, char *buffer, char **buf_out)
+{
+ if (!internal_encryption_on(es)) {
/* Not encrypting. */
*buf_out = buffer;
return NT_STATUS_OK;
}
- if (srv_trans_enc_state->smb_enc_type == SMB_TRANS_ENC_NTLM) {
- return srv_ntlm_encrypt_buffer(srv_trans_enc_state->ntlmssp_state, buffer, buf_out);
+ if (es->smb_enc_type == SMB_TRANS_ENC_NTLM) {
+ return internal_ntlm_encrypt_buffer(es->ntlmssp_state, buffer, buf_out);
} else {
#if defined(HAVE_GSSAPI_SUPPORT) && defined(HAVE_KRB5)
- return srv_gss_encrypt_buffer(srv_trans_enc_state->context_handle, buffer, buf_out);
+ return internal_gss_encrypt_buffer(es->context_handle, buffer, buf_out);
#else
return NT_STATUS_NOT_SUPPORTED;
#endif
}
}
+
+/******************************************************************************
+ 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.
+******************************************************************************/
+
+static NTSTATUS internal_decrypt_buffer(struct smb_trans_enc_state *es, char *buf)
+{
+ if (!internal_encryption_on(es)) {
+ /* Not decrypting. */
+ return NT_STATUS_OK;
+ }
+ if (es->smb_enc_type == SMB_TRANS_ENC_NTLM) {
+ return internal_ntlm_decrypt_buffer(es->ntlmssp_state, buf);
+ } else {
+#if defined(HAVE_GSSAPI_SUPPORT) && defined(HAVE_KRB5)
+ return internal_gss_decrypt_buffer(es->context_handle, buf);
+#else
+ return NT_STATUS_NOT_SUPPORTED;
+#endif
+ }
+}
+
+/******************************************************************************
+ Shutdown an encryption state.
+******************************************************************************/
+
+static void internal_free_encryption_context(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) {
+ ntlmssp_end(&es->ntlmssp_state);
+ }
+#if defined(HAVE_GSSAPI_SUPPORT) && defined(HAVE_KRB5)
+ if (es->smb_enc_type == SMB_TRANS_ENC_GSS) {
+ /* Free the gss context handle. */
+ }
+#endif
+ SAFE_FREE(es);
+ *pp_es = NULL;
+}
+
+/******************************************************************************
+ Free an encryption-allocated buffer.
+******************************************************************************/
+
+static void internal_free_enc_buffer(struct smb_trans_enc_state *es, char *buf)
+{
+ if (!internal_encryption_on(es)) {
+ return;
+ }
+
+ if (es->smb_enc_type == SMB_TRANS_ENC_NTLM) {
+ SAFE_FREE(buf);
+ return;
+ }
+
+#if defined(HAVE_GSSAPI_SUPPORT) && defined(HAVE_KRB5)
+ /* gss-api free buffer.... */
+#endif
+}
+
+/******************************************************************************
+ Client side encryption.
+******************************************************************************/
+
+/******************************************************************************
+ Is client encryption on ?
+******************************************************************************/
+
+BOOL cli_encryption_on(struct cli_state *cli)
+{
+ return internal_encryption_on(cli->trans_enc_state);
+}
+
+/******************************************************************************
+ Shutdown a client encryption state.
+******************************************************************************/
+
+void cli_free_encryption_context(struct cli_state *cli)
+{
+ return internal_free_encryption_context(&cli->trans_enc_state);
+}
+
+/******************************************************************************
+ Free an encryption-allocated buffer.
+******************************************************************************/
+
+void cli_free_enc_buffer(struct cli_state *cli, char *buf)
+{
+ return internal_free_enc_buffer(cli->trans_enc_state, buf);
+}
+
+/******************************************************************************
+ Decrypt an incoming buffer.
+******************************************************************************/
+
+NTSTATUS cli_decrypt_message(struct cli_state *cli)
+{
+ return internal_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)
+{
+ return internal_encrypt_buffer(cli->trans_enc_state, cli->outbuf, buf_out);
+}
+
+/******************************************************************************
+ Server side encryption.
+******************************************************************************/
+
+/******************************************************************************
+ Global server state.
+******************************************************************************/
+
+static struct smb_trans_enc_state *partial_srv_trans_enc_state;
+static struct smb_trans_enc_state *srv_trans_enc_state;
+
+/******************************************************************************
+ Is server encryption on ?
+******************************************************************************/
+
+BOOL srv_encryption_on(void)
+{
+ return internal_encryption_on(srv_trans_enc_state);
+}
+
+/******************************************************************************
+ Shutdown a server encryption state.
+******************************************************************************/
+
+void srv_free_encryption_context(void)
+{
+ return internal_free_encryption_context(&srv_trans_enc_state);
+}
+
+/******************************************************************************
+ Free an encryption-allocated buffer.
+******************************************************************************/
+
+void srv_free_enc_buffer(char *buf)
+{
+ return internal_free_enc_buffer(srv_trans_enc_state, buf);
+}
+
+/******************************************************************************
+ Decrypt an incoming buffer.
+******************************************************************************/
+
+NTSTATUS srv_decrypt_buffer(char *buf)
+{
+ return internal_decrypt_buffer(srv_trans_enc_state, buf);
+}
+
+/******************************************************************************
+ Encrypt an outgoing buffer. Return the encrypted pointer in buf_out.
+******************************************************************************/
+
+NTSTATUS srv_encrypt_buffer(char *buffer, char **buf_out)
+{
+ return internal_encrypt_buffer(srv_trans_enc_state, buffer, buf_out);
+}
generated by cgit (git 2.34.1) at 2024-12-18 04:51:45 +0000