diff options
Diffstat (limited to 'source3/auth')
| -rw-r--r-- | source3/auth/auth_util.c | 28 | ||||
| -rw-r--r-- | source3/auth/proto.h | 1 |
2 files changed, 29 insertions, 0 deletions
diff --git a/source3/auth/auth_util.c b/source3/auth/auth_util.c index 21a8642751..4f6ebfa4a4 100644 --- a/source3/auth/auth_util.c +++ b/source3/auth/auth_util.c @@ -1618,3 +1618,31 @@ NTSTATUS do_map_to_guest_server_info(NTSTATUS status, return status; } + +/* + Extract session key from a session info and return it in a blob + if intent is KEY_USE_16BYTES, truncate it to 16 bytes + + See sections 3.2.4.15 and 3.3.4.2 of MS-SMB + Also see https://lists.samba.org/archive/cifs-protocol/2012-January/002265.html for details + + Note that returned session_key is referencing the original key, it is supposed to be + short-lived. If original session_info->session_key is gone, the reference will be broken. +*/ +NTSTATUS session_extract_session_key(const struct auth_session_info *session_info, DATA_BLOB *session_key, enum session_key_use_intent intent) +{ + + if (session_key == NULL || session_info == NULL) { + return NT_STATUS_INVALID_PARAMETER; + } + + if (session_info->session_key.length == 0) { + return NT_STATUS_NO_USER_SESSION_KEY; + } + + *session_key = session_info->session_key; + if (intent == KEY_USE_16BYTES) { + session_key->length = MIN(session_info->session_key.length, 16); + } + return NT_STATUS_OK; +} diff --git a/source3/auth/proto.h b/source3/auth/proto.h index 01e2934dc7..44ae9097a5 100644 --- a/source3/auth/proto.h +++ b/source3/auth/proto.h @@ -248,6 +248,7 @@ NTSTATUS make_server_info_wbcAuthUserInfo(TALLOC_CTX *mem_ctx, struct auth_serversupplied_info **server_info); void free_user_info(struct auth_usersupplied_info **user_info); bool is_trusted_domain(const char* dom_name); +NTSTATUS session_extract_session_key(const struct auth_session_info *session_info, DATA_BLOB *session_key, enum session_key_use_intent intent); /* The following definitions come from auth/user_info.c */ |