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https://github.com/samba-team/samba.git
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Reformatting only before real change.
Jeremy. (This used to be commit ac21f280d5030a9c49330be37bd754a1540a238a)
This commit is contained in:
Jeremy Allison
parent
6dad13d801
commit
dc0c3e97ca
@ -609,8 +609,9 @@ const static struct smb_message_struct
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};
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/*******************************************************************
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dump a prs to a file
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********************************************************************/
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Dump a packet to a file.
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********************************************************************/
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static void smb_dump(const char *name, int type, char *data, ssize_t len)
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{
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int fd, i;
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@ -635,178 +636,170 @@ static void smb_dump(const char *name, int type, char *data, ssize_t len)
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/****************************************************************************
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do a switch on the message type, and return the response size
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Do a switch on the message type, and return the response size
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****************************************************************************/
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static int switch_message(int type,char *inbuf,char *outbuf,int size,int bufsize)
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{
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static pid_t pid= (pid_t)-1;
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int outsize = 0;
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extern uint16 global_smbpid;
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static pid_t pid= (pid_t)-1;
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int outsize = 0;
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extern uint16 global_smbpid;
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type &= 0xff;
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type &= 0xff;
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if (pid == (pid_t)-1)
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pid = sys_getpid();
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if (pid == (pid_t)-1)
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pid = sys_getpid();
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errno = 0;
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last_message = type;
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errno = 0;
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last_message = type;
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/* make sure this is an SMB packet */
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if (strncmp(smb_base(inbuf),"\377SMB",4) != 0)
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{
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DEBUG(2,("Non-SMB packet of length %d\n",smb_len(inbuf)));
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return(-1);
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}
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/* Make sure this is an SMB packet */
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if (strncmp(smb_base(inbuf),"\377SMB",4) != 0) {
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DEBUG(2,("Non-SMB packet of length %d\n",smb_len(inbuf)));
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return(-1);
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}
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/* yuck! this is an interim measure before we get rid of our
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current inbuf/outbuf system */
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global_smbpid = SVAL(inbuf,smb_pid);
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/* yuck! this is an interim measure before we get rid of our
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current inbuf/outbuf system */
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global_smbpid = SVAL(inbuf,smb_pid);
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if (smb_messages[type].fn == NULL)
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{
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DEBUG(0,("Unknown message type %d!\n",type));
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smb_dump("Unknown", 1, inbuf, size);
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outsize = reply_unknown(inbuf,outbuf);
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}
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else
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{
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int flags = smb_messages[type].flags;
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static uint16 last_session_tag = UID_FIELD_INVALID;
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/* In share mode security we must ignore the vuid. */
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uint16 session_tag = (lp_security() == SEC_SHARE) ? UID_FIELD_INVALID : SVAL(inbuf,smb_uid);
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connection_struct *conn = conn_find(SVAL(inbuf,smb_tid));
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if (smb_messages[type].fn == NULL) {
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DEBUG(0,("Unknown message type %d!\n",type));
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smb_dump("Unknown", 1, inbuf, size);
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outsize = reply_unknown(inbuf,outbuf);
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} else {
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int flags = smb_messages[type].flags;
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static uint16 last_session_tag = UID_FIELD_INVALID;
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/* In share mode security we must ignore the vuid. */
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uint16 session_tag = (lp_security() == SEC_SHARE) ? UID_FIELD_INVALID : SVAL(inbuf,smb_uid);
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connection_struct *conn = conn_find(SVAL(inbuf,smb_tid));
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DEBUG(3,("switch message %s (pid %d)\n",smb_fn_name(type),(int)pid));
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DEBUG(3,("switch message %s (pid %d)\n",smb_fn_name(type),(int)pid));
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smb_dump(smb_fn_name(type), 1, inbuf, size);
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if(global_oplock_break)
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{
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if(flags & QUEUE_IN_OPLOCK)
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{
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/*
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* Queue this message as we are the process of an oplock break.
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*/
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smb_dump(smb_fn_name(type), 1, inbuf, size);
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if(global_oplock_break) {
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if(flags & QUEUE_IN_OPLOCK) {
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/*
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* Queue this message as we are the process of an oplock break.
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*/
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DEBUG( 2, ( "switch_message: queueing message due to being in " ) );
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DEBUGADD( 2, ( "oplock break state.\n" ) );
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DEBUG( 2, ( "switch_message: queueing message due to being in " ) );
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DEBUGADD( 2, ( "oplock break state.\n" ) );
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push_oplock_pending_smb_message( inbuf, size );
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return -1;
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}
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}
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push_oplock_pending_smb_message( inbuf, size );
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return -1;
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}
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}
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/* Ensure this value is replaced in the incoming packet. */
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SSVAL(inbuf,smb_uid,session_tag);
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/* Ensure this value is replaced in the incoming packet. */
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SSVAL(inbuf,smb_uid,session_tag);
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/*
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* Ensure the correct username is in current_user_info.
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* This is a really ugly bugfix for problems with
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* multiple session_setup_and_X's being done and
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* allowing %U and %G substitutions to work correctly.
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* There is a reason this code is done here, don't
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* move it unless you know what you're doing... :-).
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* JRA.
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*/
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/*
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* Ensure the correct username is in current_user_info.
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* This is a really ugly bugfix for problems with
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* multiple session_setup_and_X's being done and
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* allowing %U and %G substitutions to work correctly.
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* There is a reason this code is done here, don't
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* move it unless you know what you're doing... :-).
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* JRA.
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*/
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if (session_tag != last_session_tag) {
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user_struct *vuser = NULL;
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if (session_tag != last_session_tag) {
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user_struct *vuser = NULL;
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last_session_tag = session_tag;
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if(session_tag != UID_FIELD_INVALID)
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vuser = get_valid_user_struct(session_tag);
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if(vuser != NULL)
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current_user_info = vuser->user;
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}
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last_session_tag = session_tag;
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if(session_tag != UID_FIELD_INVALID)
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vuser = get_valid_user_struct(session_tag);
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if(vuser != NULL)
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current_user_info = vuser->user;
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}
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/* does this protocol need to be run as root? */
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if (!(flags & AS_USER))
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change_to_root_user();
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/* does this protocol need to be run as root? */
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if (!(flags & AS_USER))
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change_to_root_user();
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/* does this protocol need a valid tree connection? */
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if ((flags & AS_USER) && !conn) {
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return ERROR_DOS(ERRSRV, ERRinvnid);
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}
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/* does this protocol need a valid tree connection? */
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if ((flags & AS_USER) && !conn)
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return ERROR_DOS(ERRSRV, ERRinvnid);
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/* does this protocol need to be run as the connected user? */
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if ((flags & AS_USER) && !change_to_user(conn,session_tag)) {
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if (flags & AS_GUEST)
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flags &= ~AS_USER;
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else
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return(ERROR_DOS(ERRSRV,ERRaccess));
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}
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/* does this protocol need to be run as the connected user? */
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if ((flags & AS_USER) && !change_to_user(conn,session_tag)) {
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if (flags & AS_GUEST)
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flags &= ~AS_USER;
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else
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return(ERROR_DOS(ERRSRV,ERRaccess));
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}
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/* this code is to work around a bug is MS client 3 without
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introducing a security hole - it needs to be able to do
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print queue checks as guest if it isn't logged in properly */
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if (flags & AS_USER)
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flags &= ~AS_GUEST;
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/* this code is to work around a bug is MS client 3 without
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introducing a security hole - it needs to be able to do
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print queue checks as guest if it isn't logged in properly */
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if (flags & AS_USER)
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flags &= ~AS_GUEST;
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/* does it need write permission? */
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if ((flags & NEED_WRITE) && !CAN_WRITE(conn))
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return(ERROR_DOS(ERRSRV,ERRaccess));
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/* does it need write permission? */
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if ((flags & NEED_WRITE) && !CAN_WRITE(conn))
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return(ERROR_DOS(ERRSRV,ERRaccess));
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/* ipc services are limited */
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if (IS_IPC(conn) && (flags & AS_USER) && !(flags & CAN_IPC)) {
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return(ERROR_DOS(ERRSRV,ERRaccess));
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}
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/* ipc services are limited */
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if (IS_IPC(conn) && (flags & AS_USER) && !(flags & CAN_IPC))
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return(ERROR_DOS(ERRSRV,ERRaccess));
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/* load service specific parameters */
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if (conn && !set_current_service(conn,(flags & AS_USER)?True:False)) {
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return(ERROR_DOS(ERRSRV,ERRaccess));
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}
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/* load service specific parameters */
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if (conn && !set_current_service(conn,(flags & AS_USER)?True:False))
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return(ERROR_DOS(ERRSRV,ERRaccess));
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/* does this protocol need to be run as guest? */
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if ((flags & AS_GUEST) &&
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(!change_to_guest() ||
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!check_access(smbd_server_fd(), lp_hostsallow(-1), lp_hostsdeny(-1)))) {
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return(ERROR_DOS(ERRSRV,ERRaccess));
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}
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/* does this protocol need to be run as guest? */
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if ((flags & AS_GUEST) && (!change_to_guest() ||
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!check_access(smbd_server_fd(), lp_hostsallow(-1), lp_hostsdeny(-1))))
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return(ERROR_DOS(ERRSRV,ERRaccess));
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last_inbuf = inbuf;
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last_inbuf = inbuf;
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outsize = smb_messages[type].fn(conn, inbuf,outbuf,size,bufsize);
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}
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outsize = smb_messages[type].fn(conn, inbuf,outbuf,size,bufsize);
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}
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smb_dump(smb_fn_name(type), 0, outbuf, outsize);
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smb_dump(smb_fn_name(type), 0, outbuf, outsize);
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return(outsize);
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return(outsize);
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}
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/****************************************************************************
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construct a reply to the incoming packet
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Construct a reply to the incoming packet.
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****************************************************************************/
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static int construct_reply(char *inbuf,char *outbuf,int size,int bufsize)
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{
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int type = CVAL(inbuf,smb_com);
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int outsize = 0;
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int msg_type = CVAL(inbuf,0);
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int type = CVAL(inbuf,smb_com);
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int outsize = 0;
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int msg_type = CVAL(inbuf,0);
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GetTimeOfDay(&smb_last_time);
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GetTimeOfDay(&smb_last_time);
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chain_size = 0;
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file_chain_reset();
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reset_chain_p();
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chain_size = 0;
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file_chain_reset();
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reset_chain_p();
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if (msg_type != 0)
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return(reply_special(inbuf,outbuf));
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if (msg_type != 0)
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return(reply_special(inbuf,outbuf));
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construct_reply_common(inbuf, outbuf);
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construct_reply_common(inbuf, outbuf);
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outsize = switch_message(type,inbuf,outbuf,size,bufsize);
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outsize = switch_message(type,inbuf,outbuf,size,bufsize);
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outsize += chain_size;
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outsize += chain_size;
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if(outsize > 4)
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smb_setlen(outbuf,outsize - 4);
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return(outsize);
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if(outsize > 4)
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smb_setlen(outbuf,outsize - 4);
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return(outsize);
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}
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/****************************************************************************
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Keep track of the number of running smbd's. This functionality is used to
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'hard' limit Samba overhead on resource constrained systems.
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Keep track of the number of running smbd's. This functionality is used to
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'hard' limit Samba overhead on resource constrained systems.
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****************************************************************************/
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static BOOL smbd_process_limit(void)
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{
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int32 total_smbds;
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