1	# =====================================================================
     2	# getAttachment.awk: RPC I/O function for rpclib/getAttachment.
     3	#
     4	# Copyright (c) 2007,2008,2009,2010 Carlo Strozzi
     5	#
     6	# This program is free software; you can redistribute it and/or modify
     7	# it under the terms of the GNU General Public License as published by
     8	# the Free Software Foundation; version 2 dated June, 1991.
     9	#
    10	# This program is distributed in the hope that it will be useful,
    11	# but WITHOUT ANY WARRANTY; without even the implied warranty of
    12	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13	# GNU General Public License for more details.
    14	#
    15	# You should have received a copy of the GNU General Public License
    16	# along with this program; if not, write to the Free Software
    17	# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
    18	#
    19	# =====================================================================
    20	
    21	# =====================================================================
    22	# void _userproc(int mode)
    23	# =====================================================================
    24	
    25	function _userproc(mode,				   value) {
    26	
    27	   if (mode == _O_REQUEST) {				# request.
    28	
    29	      # target group.
    30	      value = substr(_request("1",1),1,ENVIRON["TNS_GROUP_MAXLEN"])
    31	
    32	      # group must not be null and it may not contain the
    33	      # unescaped ``.'' character.
    34	
    35	      if (value != _NULL && value !~ /\./) {
    36		 _rcset("cgi.group",unixify(value))
    37		 _rcset("cgi.group.literal",value)
    38	      }
    39	
    40	      # target page within group.
    41	      value = substr(_request("2",1),1,ENVIRON["TNS_PAGE_MAXLEN"])
    42	
    43	      # page name must be at least 2-character long.
    44	      if (length(value) > 1) {
    45		 gsub(/[ \t\n\r]/," ",value)		# neutralize real junk.
    46		 _rcset("cgi.page.literal",value)
    47		 value = unixify(value,1)
    48		 _rcset("cgi.page",value)
    49	      }
    50	
    51	      # Attachment file name.
    52	      value = _request("3",1)
    53	      if (value ~ /^[a-zA-Z0-9]+[-_.a-zA-Z0-9]+[a-zA-Z]$/)
    54						_rcset("cgi.attname",value)
    55	
    56	      # extract file extension, if possible.
    57	      sub(/.*\./,_NULL,value)
    58	      value = tolower(value)
    59	      if (value ~ /^[a-z0-9]+$/) _rcset("cgi.fileext",value)
    60	
    61	      # The following test is necessary since the address could,
    62	      # at least in theory, have been set to any string by the
    63	      # remote user, due to how it is handled to cope with stunnel(8)
    64	      # and the lack of transproxy support in kernel 2.4.x.
    65	
    66	      if (_isipaddr(ENVIRON["REMOTE_ADDR"]) == _TRUE)
    67					value = ENVIRON["REMOTE_ADDR"]
    68	      else value = "0.0.0.0"
    69	
    70	      _rcset("REMOTE_ADDR",value)
    71	   }
    72	} 
    73	
    74	# EOF