4 # Contact page Perl template.
5 # Copyright (C) 2003 Jan Kratochvil <project-www.jankratochvil.net@jankratochvil.net>
7 # This program is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; exactly version 2 of June 1991 is required
11 # This program is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program; if not, write to the Free Software
18 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 require 5.6.0; # at least 'use warnings;' but we need some 5.6.0+ modules anyway
23 use vars qw($VERSION $CVS_ID);
24 $VERSION=do { my @r=(q$Revision$=~/\d+/g); sprintf "%d.".("%03d"x$#r),@r; };
29 BEGIN{ open F,"Makefile"; our $top_dir=pop @{[split /\s/,(grep /^top_srcdir/,<F>)[0]]}; eval "use lib '$top_dir'"; close F; }
32 Wrequire 'My::Project';
36 "__PACKAGE__"=>__PACKAGE__,
37 "title"=>"MMS Center Debugging",
46 my %name_item=( My::Project->one_item_list_read($name) );
47 return a_href "/project/$name/",$name_item{"name"}.': '.$name_item{"summary"};
52 <h1>MMS Center Debugging</h1>
54 <p>Here you can find description of very simple but technically interesting hack.
55 You can provide your own MMS Center (MMS=Multimedia Messaging Service) in GSM
56 network instead of the operator's one.</p>
58 <p>There is only a limitation of a bearer data service - MMS is usually run
59 over GPRS (General Packet Radio Service) channels while you cannot behave as
60 GPRS callee in GSM network. Fortunately MMS can be run also over CSD (Circuit
61 Switched Data - up to 14400bps) or HSCSD (High Speed CSD - up to 57600bps)
62 services. GPRS is usually known as always-online while CSD/HSCSD you must dial
63 some destination number. GPRS vs. CSD have usually also different GSM operator
64 tariffication but it should not matter much for the short data messages.</p>
66 <p>I did not provite a completely mine MMS center. I was involved in pilot MMS
67 Center project where some compatibility issues of MMS message format between
68 MMS phone and MMS center had to be solved. As I did not have technical access
69 to the MMS center itself I setup two mobile phones
70 (@{[ a_href 'http://www.nokia.com/','Nokia' ]} @{[ a_href 'http://www.communicator.org/','Communicator' ]}s)
71 to setup sniffing tunnel. One of the phones were setup in answer mode to
72 simulate the MMS center while the other one called to the real official (and
73 buggy) MMS center accessible as regular service provided by the GSM operator.</p>
75 @{[ centerimg 'gate','MMS Sniffing Diagram' ]}
77 @{[ centerimg 'triple.jpeg','MMS Sniffing Mobiles Setup' ]}
80 <dt>Answer side <i>pppd(8)</i> command</dt>
82 pppd /dev/ttyS5 19200 modem lock crtscts connect "chat -vf /etc/ppp/answer-T68i.chat" @{[ "\\" ]}
83 noauth debug nodefaultroute 192.168.192.67:192.168.192.68 default-asyncmap
85 <dt>Answer side <i>/etc/ppp/answer-T68i.chat</i> file</dt>
87 TIMEOUT 3 "" "ATZ" "OK-ATZ-OK" "" ABORT "BUSY" ABORT "NO CARRIER"
88 ABORT "NO DIAL TONE" ABORT "ERROR" ABORT "VOICE" REPORT CONNECT ""
90 AT+CBST=7,0,1;+DS=3,0,1300,32;+CR=1;+DR=1 OK
93 @{[ 'RING \d\d\d\d\d\dATA' ]}
97 <dt>Dial side <i>pppd(8)</i> command</dt>
99 pppd /dev/ttyS4 19200 modem lock nocrtscts xonxoff connect "chat -vf /etc/ppp/mmsgate.chat" @{[ "\\" ]}
100 noauth debug nodefaultroute
102 <dt>Answer side <i>/etc/ppp/mmsgate.chat</i> file</dt>
104 TIMEOUT 3 "" "ATZ" "OK-ATZ-OK" "" ABORT "BUSY" ABORT "NO CARRIER"
105 ABORT "NO DIAL TONE" ABORT "ERROR" ABORT "VOICE" REPORT CONNECT ""
106 #AT+CBST=7,0,1;+DS=3,0,1300,32;+CR=1;+DR=1 OK
108 TIMEOUT 90 CONNECT "" ^M ""
112 <p>Some decoded data illustration</p>
114 MMS Message Encapsulation
115 Message-Type: m-retrieve-conf (0x84)
116 Transaction-ID: PVve-6DaCUEAAC5qAAAAAQAAAEoAAAAA
118 Date: Aug 15, 2002 19:25:20.000000000
119 From: +4206CENSORED/TYPE=PLMN
121 To: +4206CENSORED/TYPE=PLMN
122 Message-Class: Informational (0x82)
123 Delivery-Report: No (0x81)
124 Content Type: application/vnd.wap.multipart.related (0x33)
125 Type: application/smil
129 Content Type: application/smil
130 Charset: us-ascii (0x0003)
132 Content-Location: AAAA
135 Content Type: image/gif (0x1d)
137 Content-Location: postcard.gif
141 <p>@{[ a_href 'http://www.sonyericsson.com/T68i/','Sony Ericsson T68i' ]}
142 MMS definition file URL decoded out of the data stream above:
143 @{[ a_href 'http://wap.sonyericssonmobile.com/UAprof/T68R201.xml' ]}</p>
146 <h2>Completed Subtasks</h2>
148 <li style="font-size: larger;">@{[ project 'etherealmmse' ]}</li>
149 <li style="font-size: larger;">@{[ project 'etherealwsp' ]}</li>