1 package GSM::SMS::NBS::Message;
6 use GSM::SMS::NBS::Lib;
10 use vars qw($VERSION);
13 use constant DEFAULT_DCS_UDH => 0xF5; # 8bit, ME specific
14 use constant DEFAULT_DCS_NOUDH => 0x00; # default DCS (typically 7bit, SIM specific)
15 use constant DEFAULT_VALIDITY => "1d"; # FIXME: currently fixed to 1 day
16 use constant DEFAULT_SMS_CENTER => ""; # FIXME: currently fixed to empty SMS center address
18 use constant USERDATA_LENGTH => 140;
19 use constant DECONCAT_TOTAL => "_deconcat_total"; # internal: undef=>try single message, *=>try & messages
20 use constant TEXT_POSITION => "text_position"; # numeric position in $payload, UDH IE will be present only once
22 use constant IEI_ANIMATION_LARGE => 0x0E; #IEI: EMS large animation (16x16 x4 = 128 bytes)
23 use constant IEI_ANIMATION_SMALL => 0x0F; #IEI: EMS small animation ( 8x 8 x4 = 32 bytes)
24 use constant IEI_PICTURE_LARGE => 0x10; #IEI: EMS large picture (32x32 = 128 bytes)
25 use constant IEI_PICTURE_SMALL => 0x11; #IEI: EMS small picture (16x16 = 32 bytes)
26 use constant IEI_PICTURE_VARIABLE => 0x12; #IEI: EMS variable picture (other)
27 use constant IEI_ALCATEL => 0x80; #IEI: Alcatel proprietary "data download" type
29 # SAR for NBS messages
30 # --------------------
31 # This part does the segmentation ... look in Stack.pm for reassembly
35 my $class = ref($proto) || $proto;
38 $self->{'__FRAMES__'} = [];
44 # Create a message from a payload -- compatibility cludge!
46 my ($self, $number, $payload, $destination_port, $source_port, $datacodingscheme) = @_;
48 "7bit" =>0x00, # default DCS (typically 7bit, SIM specific)
49 "7biti"=>0xF0, # 7bit, immediate display
50 "8bit" =>0xF6, # 8bit, SIM specific
51 "8biti"=>0xF4, # 8bit, immediate display
52 "8bitm"=>0xF5, # 8bit, ME specific
55 $datacodingscheme=$dcs_compat{$datacodingscheme} if $datacodingscheme && exists $dcs_compat{$datacodingscheme};
57 return $self->store($number, pack("H*", $payload),
58 "dcs"=>$datacodingscheme,
61 "type" =>"port16", #IEI: application port addressing scheme, 16 bit address
62 "destination_port"=>$destination_port,
63 "source_port" =>$source_port,
70 my ($self, $iei, @iedata) = @_;
72 return ($iei,scalar(@iedata),@iedata);
76 my ($self, %args) = @_;
78 return () if !defined $args{"destination_port"};
79 my $source_port=$args{"source_port"} || $args{"destination_port"};
81 return $self->_iebuilder(0x05, #IEI: application port addressing scheme, 16 bit address
82 ($args{"destination_port"} >> 8), ($args{"destination_port"} & 0xFF),
83 ($source_port >> 8), ($source_port & 0xFF),
88 my ($self, %args) = @_;
90 return $self->_iebuilder(0x00, #IEI: concatenated short message, 8 bit reference
91 $args{"drn"}, # reference number
92 $args{"fmax"}, # maximum number of short messages
93 $args{"fsn"}, # sequence number of the current short message
98 my ($self, %args) = @_;
99 my $bitmap = $args{"bitmap"}; # GSM::SMS::Bitmap instance
101 $bitmap->crop(0xFF*8,0xFF);
102 my ($width, $height) = ($bitmap->{"width"}, $bitmap->{"height"});
105 if ($width == 16 && $height == 16) { $iei = IEI_PICTURE_SMALL ; }
106 elsif ($width == 32 && $height == 32) { $iei = IEI_PICTURE_LARGE ; }
107 else { $iei = IEI_PICTURE_VARIABLE; }
109 return $self->_iebuilder($iei,
110 $args{TEXT_POSITION}, # position in the SMS
111 ($iei != IEI_PICTURE_VARIABLE ? () : (int(($width+7)/8), $height)), # image size (optional)
112 $bitmap->pixlist_horiz()
116 sub _ie_ems_animation {
117 my ($self, %args) = @_;
118 my $bitmaps = $args{"bitmaps"}; # list of GSM::SMS::Bitmap instances
120 if (4 != @$bitmaps) {
121 carp "Invalid length of EMS animation (4 required)"; return ();
123 my $bitmap = $$bitmaps[0];
124 my ($width, $height) = ($bitmap->{"width"}, $bitmap->{"height"});
125 for my $testbitmap (@$bitmaps) {
126 if ($width != $testbitmap->{"width"} || $height != $testbitmap->{"height"}) {
127 carp "Non-matching sizes in EMS animation";
132 if ($width == 8 && $height == 8) { $iei = IEI_ANIMATION_SMALL ; }
133 elsif ($width == 16 && $height == 16) { $iei = IEI_ANIMATION_LARGE ; }
135 $iei = IEI_ANIMATION_LARGE;
136 carp "Invalid frame size of EMS animation (8x8 or 16x16 required)";
139 return $self->_iebuilder($iei,
140 $args{TEXT_POSITION}, # position in the SMS
143 for $bitmap (@$bitmaps) {
144 push @r,$bitmap->pixlist_horiz();
152 my ($self, %args) = @_;
154 return $self->_iebuilder(IEI_ALCATEL,
155 (!defined($args{"name"}) ? (0x00) : # bit 7=0 (use GSM charset)
156 (length($args{"name"}), unpack("C*",
157 encode_payload(0xF1, GSM::SMS::PDU->inversetranslate($args{"name"})))) # 0xF1 DCS=any 7bit
159 (!!$args{"ems_compat"} << 7) # bit 7=EMS compatibility
160 |($args{"alcatel_type"} & 0x07), # bits 0..2=Alcatel message type
161 ($args{"length"} >> 8), ($args{"length"} & 0xFF),
166 my ($self, @srcs) = @_;
170 my @list=map { &{"_ie_".$$_{"type"}}($self,%$_); } @srcs;
173 return pack "C*",scalar(@list),@list;
176 # Create a message from a payload
177 # returns either error message or list (DECONCAT_TOTAL,total messages)
179 my ($self, $number, $payload, %args) = @_;
181 # Reset the FRAME array
182 $self->{'__FRAMES__'} = [];
185 my $PDU = GSM::SMS::PDU->new();
187 my @udhs=($args{"udh"} ? @{$args{"udh"}} : ());
189 # We put ME-specific default if ANY element of UDH was specified
190 # Autodetect $dcs BEFORE possible concatenation UDH IEs get inserted!
191 my $dcs=$args{"dcs"} || (@udhs ? DEFAULT_DCS_UDH : DEFAULT_DCS_NOUDH);
192 # print "DCS: $dcs\n";
194 my $deconcat_ieref; # defined only if deconcatenating
195 if (defined $args{DECONCAT_TOTAL}) {
198 "drn"=>int(rand(0xFF)), # reference number
199 "fmax"=>$args{DECONCAT_TOTAL}, # maximum number of short messages
200 "fsn"=>0x00, # sequence number of the current short message
202 $deconcat_ieref=\%deconcat_ie;
203 push @udhs,$deconcat_ieref;
204 return "Too long message (".$deconcat_ie{"fmax"}." elements)" if (0xFF < $deconcat_ie{"fmax"});
208 my @udhpositioned=();
209 for my $udh (@udhs) {
210 if (exists $udh->{TEXT_POSITION}) {
211 push(@udhpositioned, $udh);
213 push(@udhstatic, $udh);
216 @udhpositioned = sort { $a->{TEXT_POSITION} <=> $b->{TEXT_POSITION}; } @udhpositioned;
218 my $position=0; # absolute current position in the whole long SMS
219 while (length $payload || @udhpositioned) {
220 my @udhpositioned_now=(); # items from @udhpositioned placed in the current SMS part
221 my $payload_now=""; # text from $payload placed in the current SMS part
223 if (@udhpositioned && $udhpositioned[0]{TEXT_POSITION} <= $position) { # "<=" should be "=="
224 last if USERDATA_LENGTH < length($self->_udh_build(@udhstatic,@udhpositioned_now,$udhpositioned[0]))
225 +nail_payload_len($dcs,length($payload_now));
227 my %udhei=%{shift @udhpositioned}; # copy it to local state - we will be modifying it
228 # we subtract the absolute position base of current SMS part:
229 $udhei{TEXT_POSITION} -= $position-length($payload_now);
231 push @udhpositioned_now,\%udhei;
234 my $minlen=length $payload;
235 $minlen=min($minlen,$udhpositioned[0]{TEXT_POSITION}-$position) if @udhpositioned;
236 $minlen=min($minlen,empty_subload($dcs,
237 USERDATA_LENGTH-length($self->_udh_build(@udhstatic,@udhpositioned_now))-length($payload_now)))
238 if defined $args{DECONCAT_TOTAL};
239 last if $minlen<=0; # "<=" should be "=="
240 $payload_now.=substr($payload,0,$minlen);
241 $payload=substr($payload,$minlen);
245 # We will ship out the current SMS part here
246 ++$deconcat_ieref->{"fsn"} if $deconcat_ieref;
247 # We exceeded userdata size, this is probably the first undeconcatenaed try from store()!
248 my $userdata=$self->_udh_build(@udhstatic,@udhpositioned_now).encode_payload($dcs,$payload_now);
250 return (DECONCAT_TOTAL, undef) if USERDATA_LENGTH < length($userdata);
252 my $pdu = $PDU->SMSSubmit(DEFAULT_SMS_CENTER, $number, $userdata,
253 $dcs, DEFAULT_VALIDITY, !!@udhstatic || !!@udhpositioned_now
255 # Push on to frame array
256 # print "--> $pdu\n";
257 push(@{$self->{"__FRAMES__"}}, $pdu);
260 carp "Last fsn==".$deconcat_ieref->{"fsn"}." but fmax==".$deconcat_ieref->{"fmax"}
261 if $args{DECONCAT_TOTAL} && $deconcat_ieref->{"fsn"}!=$deconcat_ieref->{"fmax"};
262 return (undef,(!$deconcat_ieref ? 1 : $deconcat_ieref->{"fsn"})); # success, return number of _PRODUCED_ MSes
266 my ($self, $number, $payload, %args) = @_;
269 ($err, $total) = $self->_store_try($number, $payload, %args, DECONCAT_TOTAL=>undef ); return $err if !$err || $err ne DECONCAT_TOTAL;
270 ($err, $total) = $self->_store_try($number, $payload, %args, DECONCAT_TOTAL=>0 ); return $err if $err;
271 ($err, $total) = $self->_store_try($number, $payload, %args, DECONCAT_TOTAL=>$total); return $err;
277 return $self->{'__FRAMES__'};
285 GSM::SMS::NBS::Message - SAR functionality for NBS messages.
289 Implements the segmentation in the SAR engine ( Segmentation And Reassembly ).
293 Johan Van den Brande <johan@vandenbrande.com>