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-rw-r--r--source3/include/libsmb_internal.h7
-rw-r--r--source3/libsmb/libsmbclient.c98
2 files changed, 105 insertions, 0 deletions
diff --git a/source3/include/libsmb_internal.h b/source3/include/libsmb_internal.h
index 19a3edc9bf..dbc115429b 100644
--- a/source3/include/libsmb_internal.h
+++ b/source3/include/libsmb_internal.h
@@ -106,6 +106,13 @@ struct smbc_internal_data {
* and retrieved with smbc_option_set() and smbc_option_get().
*/
void * _user_data;
+
+ /*
+ * Should we attempt UNIX smb encryption ?
+ * Set to 0 if we should never attempt, set to 1 if
+ * encryption requested, set to 2 if encryption required.
+ */
+ int _smb_encryption_level;
};
diff --git a/source3/libsmb/libsmbclient.c b/source3/libsmb/libsmbclient.c
index 2ff2830256..da8f1e332b 100644
--- a/source3/libsmb/libsmbclient.c
+++ b/source3/libsmb/libsmbclient.c
@@ -6,6 +6,7 @@
Copyright (C) John Terpstra 2000
Copyright (C) Tom Jansen (Ninja ISD) 2002
Copyright (C) Derrell Lipman 2003, 2004
+ Copyright (C) Jeremy Allison 2007, 2008
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
@@ -739,6 +740,12 @@ smbc_server(SMBCCTX *context,
password, strlen(password)+1);
}
+ /*
+ * We don't need to renegotiate encryption
+ * here as the encryption context is not per
+ * tid.
+ */
+
if (! cli_send_tconX(srv->cli, share, "?????",
password, strlen(password)+1)) {
@@ -903,6 +910,30 @@ smbc_server(SMBCCTX *context,
DEBUG(4,(" tconx ok\n"));
+ if (context->internal->_smb_encryption_level) {
+ /* Attempt UNIX smb encryption. */
+ if (!NT_STATUS_IS_OK(cli_force_encryption(c,
+ username_used,
+ password,
+ workgroup))) {
+
+ /*
+ * context->internal->_smb_encryption_level == 1
+ * means don't fail if encryption can't be negotiated,
+ * == 2 means fail if encryption can't be negotiated.
+ */
+
+ DEBUG(4,(" SMB encrypt failed\n"));
+
+ if (context->internal->_smb_encryption_level == 2) {
+ cli_shutdown(c);
+ errno = EPERM;
+ return NULL;
+ }
+ }
+ DEBUG(4,(" SMB encrypt ok\n"));
+ }
+
/*
* Ok, we have got a nice connection
* Let's allocate a server structure.
@@ -1019,6 +1050,30 @@ smbc_attr_server(SMBCCTX *context,
return NULL;
}
+ if (context->internal->_smb_encryption_level) {
+ /* Attempt UNIX smb encryption. */
+ if (!NT_STATUS_IS_OK(cli_force_encryption(ipc_cli,
+ username,
+ password,
+ workgroup))) {
+
+ /*
+ * context->internal->_smb_encryption_level == 1
+ * means don't fail if encryption can't be negotiated,
+ * == 2 means fail if encryption can't be negotiated.
+ */
+
+ DEBUG(4,(" SMB encrypt failed on IPC$\n"));
+
+ if (context->internal->_smb_encryption_level == 2) {
+ cli_shutdown(ipc_cli);
+ errno = EPERM;
+ return NULL;
+ }
+ }
+ DEBUG(4,(" SMB encrypt ok on IPC$\n"));
+ }
+
ipc_srv = SMB_MALLOC_P(SMBCSRV);
if (!ipc_srv) {
errno = ENOMEM;
@@ -6724,6 +6779,7 @@ smbc_option_set(SMBCCTX *context,
bool b;
smbc_get_auth_data_with_context_fn auth_fn;
void *v;
+ const char *s;
} option_value;
va_start(ap, option_name);
@@ -6772,6 +6828,19 @@ smbc_option_set(SMBCCTX *context,
*/
option_value.v = va_arg(ap, void *);
context->internal->_user_data = option_value.v;
+ } else if (strcmp(option_name, "smb_encrypt_level") == 0) {
+ /*
+ * Save an encoded value for encryption level.
+ * 0 = off, 1 = attempt, 2 = required.
+ */
+ option_value.s = va_arg(ap, const char *);
+ if (strcmp(option_value.s, "none") == 0) {
+ context->internal->_smb_encryption_level = 0;
+ } else if (strcmp(option_value.s, "request") == 0) {
+ context->internal->_smb_encryption_level = 1;
+ } else if (strcmp(option_value.s, "require") == 0) {
+ context->internal->_smb_encryption_level = 2;
+ }
}
va_end(ap);
@@ -6821,6 +6890,35 @@ smbc_option_get(SMBCCTX *context,
* with smbc_option_get()
*/
return context->internal->_user_data;
+ } else if (strcmp(option_name, "smb_encrypt_level") == 0) {
+ /*
+ * Return the current smb encrypt negotiate option as a string.
+ */
+ switch (context->internal->_smb_encryption_level) {
+ case 0:
+ return (void *) "none";
+ case 1:
+ return (void *) "request";
+ case 2:
+ return (void *) "require";
+ }
+ } else if (strcmp(option_name, "smb_encrypt_on") == 0) {
+ /*
+ * Return the current smb encrypt status option as a bool.
+ * false = off, true = on. We don't know what server is
+ * being requested, so we only return true if all servers
+ * are using an encrypted connection.
+ */
+ SMBCSRV *s;
+ unsigned int num_servers = 0;
+
+ for (s = context->internal->_servers; s; s = s->next) {
+ num_servers++;
+ if (s->cli->trans_enc_state == NULL) {
+ return (void *)false;
+ }
+ }
+ return (void *) (bool) (num_servers > 0);
}
return NULL;