1 /*
2  * Copyright (C) 2007-2008 Esmertec AG.
3  * Copyright (C) 2007-2008 The Android Open Source Project
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  *      http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 package com.example.android.mmslib.pdu;
19 
20 import android.content.ContentResolver;
21 import android.content.Context;
22 import android.util.Log;
23 import android.text.TextUtils;
24 
25 import java.io.ByteArrayOutputStream;
26 import java.io.FileNotFoundException;
27 import java.io.IOException;
28 import java.io.InputStream;
29 import java.util.Arrays;
30 import java.util.HashMap;
31 
32 public class PduComposer {
33     /**
34      * Address type.
35      */
36     static private final int PDU_PHONE_NUMBER_ADDRESS_TYPE = 1;
37     static private final int PDU_EMAIL_ADDRESS_TYPE = 2;
38     static private final int PDU_IPV4_ADDRESS_TYPE = 3;
39     static private final int PDU_IPV6_ADDRESS_TYPE = 4;
40     static private final int PDU_UNKNOWN_ADDRESS_TYPE = 5;
41 
42     /**
43      * Address regular expression string.
44      */
45     static final String REGEXP_PHONE_NUMBER_ADDRESS_TYPE = "\\+?[0-9|\\.|\\-]+";
46     static final String REGEXP_EMAIL_ADDRESS_TYPE = "[a-zA-Z| ]*\\<{0,1}[a-zA-Z| ]+@{1}" +
47             "[a-zA-Z| ]+\\.{1}[a-zA-Z| ]+\\>{0,1}";
48     static final String REGEXP_IPV6_ADDRESS_TYPE =
49         "[a-fA-F]{4}\\:{1}[a-fA-F0-9]{4}\\:{1}[a-fA-F0-9]{4}\\:{1}" +
50         "[a-fA-F0-9]{4}\\:{1}[a-fA-F0-9]{4}\\:{1}[a-fA-F0-9]{4}\\:{1}" +
51         "[a-fA-F0-9]{4}\\:{1}[a-fA-F0-9]{4}";
52     static final String REGEXP_IPV4_ADDRESS_TYPE = "[0-9]{1,3}\\.{1}[0-9]{1,3}\\.{1}" +
53             "[0-9]{1,3}\\.{1}[0-9]{1,3}";
54 
55     /**
56      * The postfix strings of address.
57      */
58     static final String STRING_PHONE_NUMBER_ADDRESS_TYPE = "/TYPE=PLMN";
59     static final String STRING_IPV4_ADDRESS_TYPE = "/TYPE=IPV4";
60     static final String STRING_IPV6_ADDRESS_TYPE = "/TYPE=IPV6";
61 
62     /**
63      * Error values.
64      */
65     static private final int PDU_COMPOSE_SUCCESS = 0;
66     static private final int PDU_COMPOSE_CONTENT_ERROR = 1;
67     static private final int PDU_COMPOSE_FIELD_NOT_SET = 2;
68     static private final int PDU_COMPOSE_FIELD_NOT_SUPPORTED = 3;
69 
70     /**
71      * WAP values defined in WSP spec.
72      */
73     static private final int QUOTED_STRING_FLAG = 34;
74     static private final int END_STRING_FLAG = 0;
75     static private final int LENGTH_QUOTE = 31;
76     static private final int TEXT_MAX = 127;
77     static private final int SHORT_INTEGER_MAX = 127;
78     static private final int LONG_INTEGER_LENGTH_MAX = 8;
79 
80     /**
81      * Block size when read data from InputStream.
82      */
83     static private final int PDU_COMPOSER_BLOCK_SIZE = 1024;
84 
85     /**
86      * The output message.
87      */
88     protected ByteArrayOutputStream mMessage = null;
89 
90     /**
91      * The PDU.
92      */
93     private GenericPdu mPdu = null;
94 
95     /**
96      * Current visiting position of the mMessage.
97      */
98     protected int mPosition = 0;
99 
100     /**
101      * Message compose buffer stack.
102      */
103     private BufferStack mStack = null;
104 
105     /**
106      * Content resolver.
107      */
108     private final ContentResolver mResolver;
109 
110     /**
111      * Header of this pdu.
112      */
113     private PduHeaders mPduHeader = null;
114 
115     /**
116      * Map of all content type
117      */
118     private static HashMap<String, Integer> mContentTypeMap = null;
119 
120     static {
121         mContentTypeMap = new HashMap<String, Integer>();
122 
123         int i;
124         for (i = 0; i < PduContentTypes.contentTypes.length; i++) {
mContentTypeMap.put(PduContentTypes.contentTypes[i], i)125             mContentTypeMap.put(PduContentTypes.contentTypes[i], i);
126         }
127     }
128 
129     /**
130      * Constructor.
131      *
132      * @param context the context
133      * @param pdu the pdu to be composed
134      */
PduComposer(Context context, GenericPdu pdu)135     public PduComposer(Context context, GenericPdu pdu) {
136         mPdu = pdu;
137         mResolver = context.getContentResolver();
138         mPduHeader = pdu.getPduHeaders();
139         mStack = new BufferStack();
140         mMessage = new ByteArrayOutputStream();
141         mPosition = 0;
142     }
143 
144     /**
145      * Make the message. No need to check whether mandatory fields are set,
146      * because the constructors of outgoing pdus are taking care of this.
147      *
148      * @return OutputStream of maked message. Return null if
149      *         the PDU is invalid.
150      */
make()151     public byte[] make() {
152         // Get Message-type.
153         int type = mPdu.getMessageType();
154 
155         /* make the message */
156         switch (type) {
157             case PduHeaders.MESSAGE_TYPE_SEND_REQ:
158                 if (makeSendReqPdu() != PDU_COMPOSE_SUCCESS) {
159                     return null;
160                 }
161                 break;
162             case PduHeaders.MESSAGE_TYPE_NOTIFYRESP_IND:
163                 if (makeNotifyResp() != PDU_COMPOSE_SUCCESS) {
164                     return null;
165                 }
166                 break;
167             case PduHeaders.MESSAGE_TYPE_ACKNOWLEDGE_IND:
168                 if (makeAckInd() != PDU_COMPOSE_SUCCESS) {
169                     return null;
170                 }
171                 break;
172             case PduHeaders.MESSAGE_TYPE_READ_REC_IND:
173                 if (makeReadRecInd() != PDU_COMPOSE_SUCCESS) {
174                     return null;
175                 }
176                 break;
177             default:
178                 return null;
179         }
180 
181         return mMessage.toByteArray();
182     }
183 
184     /**
185      *  Copy buf to mMessage.
186      */
arraycopy(byte[] buf, int pos, int length)187     protected void arraycopy(byte[] buf, int pos, int length) {
188         mMessage.write(buf, pos, length);
189         mPosition = mPosition + length;
190     }
191 
192     /**
193      * Append a byte to mMessage.
194      */
append(int value)195     protected void append(int value) {
196         mMessage.write(value);
197         mPosition ++;
198     }
199 
200     /**
201      * Append short integer value to mMessage.
202      * This implementation doesn't check the validity of parameter, since it
203      * assumes that the values are validated in the GenericPdu setter methods.
204      */
appendShortInteger(int value)205     protected void appendShortInteger(int value) {
206         /*
207          * From WAP-230-WSP-20010705-a:
208          * Short-integer = OCTET
209          * ; Integers in range 0-127 shall be encoded as a one octet value
210          * ; with the most significant bit set to one (1xxx xxxx) and with
211          * ; the value in the remaining least significant bits.
212          * In our implementation, only low 7 bits are stored and otherwise
213          * bits are ignored.
214          */
215         append((value | 0x80) & 0xff);
216     }
217 
218     /**
219      * Append an octet number between 128 and 255 into mMessage.
220      * NOTE:
221      * A value between 0 and 127 should be appended by using appendShortInteger.
222      * This implementation doesn't check the validity of parameter, since it
223      * assumes that the values are validated in the GenericPdu setter methods.
224      */
appendOctet(int number)225     protected void appendOctet(int number) {
226         append(number);
227     }
228 
229     /**
230      * Append a short length into mMessage.
231      * This implementation doesn't check the validity of parameter, since it
232      * assumes that the values are validated in the GenericPdu setter methods.
233      */
appendShortLength(int value)234     protected void appendShortLength(int value) {
235         /*
236          * From WAP-230-WSP-20010705-a:
237          * Short-length = <Any octet 0-30>
238          */
239         append(value);
240     }
241 
242     /**
243      * Append long integer into mMessage. it's used for really long integers.
244      * This implementation doesn't check the validity of parameter, since it
245      * assumes that the values are validated in the GenericPdu setter methods.
246      */
appendLongInteger(long longInt)247     protected void appendLongInteger(long longInt) {
248         /*
249          * From WAP-230-WSP-20010705-a:
250          * Long-integer = Short-length Multi-octet-integer
251          * ; The Short-length indicates the length of the Multi-octet-integer
252          * Multi-octet-integer = 1*30 OCTET
253          * ; The content octets shall be an unsigned integer value with the
254          * ; most significant octet encoded first (big-endian representation).
255          * ; The minimum number of octets must be used to encode the value.
256          */
257         int size;
258         long temp = longInt;
259 
260         // Count the length of the long integer.
261         for(size = 0; (temp != 0) && (size < LONG_INTEGER_LENGTH_MAX); size++) {
262             temp = (temp >>> 8);
263         }
264 
265         // Set Length.
266         appendShortLength(size);
267 
268         // Count and set the long integer.
269         int i;
270         int shift = (size -1) * 8;
271 
272         for (i = 0; i < size; i++) {
273             append((int)((longInt >>> shift) & 0xff));
274             shift = shift - 8;
275         }
276     }
277 
278     /**
279      * Append text string into mMessage.
280      * This implementation doesn't check the validity of parameter, since it
281      * assumes that the values are validated in the GenericPdu setter methods.
282      */
appendTextString(byte[] text)283     protected void appendTextString(byte[] text) {
284         /*
285          * From WAP-230-WSP-20010705-a:
286          * Text-string = [Quote] *TEXT End-of-string
287          * ; If the first character in the TEXT is in the range of 128-255,
288          * ; a Quote character must precede it. Otherwise the Quote character
289          * ;must be omitted. The Quote is not part of the contents.
290          */
291         if (((text[0])&0xff) > TEXT_MAX) { // No need to check for <= 255
292             append(TEXT_MAX);
293         }
294 
295         arraycopy(text, 0, text.length);
296         append(0);
297     }
298 
299     /**
300      * Append text string into mMessage.
301      * This implementation doesn't check the validity of parameter, since it
302      * assumes that the values are validated in the GenericPdu setter methods.
303      */
appendTextString(String str)304     protected void appendTextString(String str) {
305         /*
306          * From WAP-230-WSP-20010705-a:
307          * Text-string = [Quote] *TEXT End-of-string
308          * ; If the first character in the TEXT is in the range of 128-255,
309          * ; a Quote character must precede it. Otherwise the Quote character
310          * ;must be omitted. The Quote is not part of the contents.
311          */
312         appendTextString(str.getBytes());
313     }
314 
315     /**
316      * Append encoded string value to mMessage.
317      * This implementation doesn't check the validity of parameter, since it
318      * assumes that the values are validated in the GenericPdu setter methods.
319      */
appendEncodedString(EncodedStringValue enStr)320     protected void appendEncodedString(EncodedStringValue enStr) {
321         /*
322          * From OMA-TS-MMS-ENC-V1_3-20050927-C:
323          * Encoded-string-value = Text-string | Value-length Char-set Text-string
324          */
325         assert(enStr != null);
326 
327         int charset = enStr.getCharacterSet();
328         byte[] textString = enStr.getTextString();
329         if (null == textString) {
330             return;
331         }
332 
333         /*
334          * In the implementation of EncodedStringValue, the charset field will
335          * never be 0. It will always be composed as
336          * Encoded-string-value = Value-length Char-set Text-string
337          */
338         mStack.newbuf();
339         PositionMarker start = mStack.mark();
340 
341         appendShortInteger(charset);
342         appendTextString(textString);
343 
344         int len = start.getLength();
345         mStack.pop();
346         appendValueLength(len);
347         mStack.copy();
348     }
349 
350     /**
351      * Append uintvar integer into mMessage.
352      * This implementation doesn't check the validity of parameter, since it
353      * assumes that the values are validated in the GenericPdu setter methods.
354      */
appendUintvarInteger(long value)355     protected void appendUintvarInteger(long value) {
356         /*
357          * From WAP-230-WSP-20010705-a:
358          * To encode a large unsigned integer, split it into 7-bit fragments
359          * and place them in the payloads of multiple octets. The most significant
360          * bits are placed in the first octets with the least significant bits
361          * ending up in the last octet. All octets MUST set the Continue bit to 1
362          * except the last octet, which MUST set the Continue bit to 0.
363          */
364         int i;
365         long max = SHORT_INTEGER_MAX;
366 
367         for (i = 0; i < 5; i++) {
368             if (value < max) {
369                 break;
370             }
371 
372             max = (max << 7) | 0x7fl;
373         }
374 
375         while(i > 0) {
376             long temp = value >>> (i * 7);
377             temp = temp & 0x7f;
378 
379             append((int)((temp | 0x80) & 0xff));
380 
381             i--;
382         }
383 
384         append((int)(value & 0x7f));
385     }
386 
387     /**
388      * Append date value into mMessage.
389      * This implementation doesn't check the validity of parameter, since it
390      * assumes that the values are validated in the GenericPdu setter methods.
391      */
appendDateValue(long date)392     protected void appendDateValue(long date) {
393         /*
394          * From OMA-TS-MMS-ENC-V1_3-20050927-C:
395          * Date-value = Long-integer
396          */
397         appendLongInteger(date);
398     }
399 
400     /**
401      * Append value length to mMessage.
402      * This implementation doesn't check the validity of parameter, since it
403      * assumes that the values are validated in the GenericPdu setter methods.
404      */
appendValueLength(long value)405     protected void appendValueLength(long value) {
406         /*
407          * From WAP-230-WSP-20010705-a:
408          * Value-length = Short-length | (Length-quote Length)
409          * ; Value length is used to indicate the length of the value to follow
410          * Short-length = <Any octet 0-30>
411          * Length-quote = <Octet 31>
412          * Length = Uintvar-integer
413          */
414         if (value < LENGTH_QUOTE) {
415             appendShortLength((int) value);
416             return;
417         }
418 
419         append(LENGTH_QUOTE);
420         appendUintvarInteger(value);
421     }
422 
423     /**
424      * Append quoted string to mMessage.
425      * This implementation doesn't check the validity of parameter, since it
426      * assumes that the values are validated in the GenericPdu setter methods.
427      */
appendQuotedString(byte[] text)428     protected void appendQuotedString(byte[] text) {
429         /*
430          * From WAP-230-WSP-20010705-a:
431          * Quoted-string = <Octet 34> *TEXT End-of-string
432          * ;The TEXT encodes an RFC2616 Quoted-string with the enclosing
433          * ;quotation-marks <"> removed.
434          */
435         append(QUOTED_STRING_FLAG);
436         arraycopy(text, 0, text.length);
437         append(END_STRING_FLAG);
438     }
439 
440     /**
441      * Append quoted string to mMessage.
442      * This implementation doesn't check the validity of parameter, since it
443      * assumes that the values are validated in the GenericPdu setter methods.
444      */
appendQuotedString(String str)445     protected void appendQuotedString(String str) {
446         /*
447          * From WAP-230-WSP-20010705-a:
448          * Quoted-string = <Octet 34> *TEXT End-of-string
449          * ;The TEXT encodes an RFC2616 Quoted-string with the enclosing
450          * ;quotation-marks <"> removed.
451          */
452         appendQuotedString(str.getBytes());
453     }
454 
appendAddressType(EncodedStringValue address)455     private EncodedStringValue appendAddressType(EncodedStringValue address) {
456         EncodedStringValue temp = null;
457 
458         try {
459             int addressType = checkAddressType(address.getString());
460             temp = EncodedStringValue.copy(address);
461             if (PDU_PHONE_NUMBER_ADDRESS_TYPE == addressType) {
462                 // Phone number.
463                 temp.appendTextString(STRING_PHONE_NUMBER_ADDRESS_TYPE.getBytes());
464             } else if (PDU_IPV4_ADDRESS_TYPE == addressType) {
465                 // Ipv4 address.
466                 temp.appendTextString(STRING_IPV4_ADDRESS_TYPE.getBytes());
467             } else if (PDU_IPV6_ADDRESS_TYPE == addressType) {
468                 // Ipv6 address.
469                 temp.appendTextString(STRING_IPV6_ADDRESS_TYPE.getBytes());
470             }
471         } catch (NullPointerException e) {
472             return null;
473         }
474 
475         return temp;
476     }
477 
478     /**
479      * Append header to mMessage.
480      */
appendHeader(int field)481     private int appendHeader(int field) {
482         switch (field) {
483             case PduHeaders.MMS_VERSION:
484                 appendOctet(field);
485 
486                 int version = mPduHeader.getOctet(field);
487                 if (0 == version) {
488                     appendShortInteger(PduHeaders.CURRENT_MMS_VERSION);
489                 } else {
490                     appendShortInteger(version);
491                 }
492 
493                 break;
494 
495             case PduHeaders.MESSAGE_ID:
496             case PduHeaders.TRANSACTION_ID:
497                 byte[] textString = mPduHeader.getTextString(field);
498                 if (null == textString) {
499                     return PDU_COMPOSE_FIELD_NOT_SET;
500                 }
501 
502                 appendOctet(field);
503                 appendTextString(textString);
504                 break;
505 
506             case PduHeaders.TO:
507             case PduHeaders.BCC:
508             case PduHeaders.CC:
509                 EncodedStringValue[] addr = mPduHeader.getEncodedStringValues(field);
510 
511                 if (null == addr) {
512                     return PDU_COMPOSE_FIELD_NOT_SET;
513                 }
514 
515                 EncodedStringValue temp;
516                 for (int i = 0; i < addr.length; i++) {
517                     temp = appendAddressType(addr[i]);
518                     if (temp == null) {
519                         return PDU_COMPOSE_CONTENT_ERROR;
520                     }
521 
522                     appendOctet(field);
523                     appendEncodedString(temp);
524                 }
525                 break;
526 
527             case PduHeaders.FROM:
528                 // Value-length (Address-present-token Encoded-string-value | Insert-address-token)
529                 appendOctet(field);
530 
531                 EncodedStringValue from = mPduHeader.getEncodedStringValue(field);
532                 if ((from == null)
533                         || TextUtils.isEmpty(from.getString())
534                         || new String(from.getTextString()).equals(
535                                 PduHeaders.FROM_INSERT_ADDRESS_TOKEN_STR)) {
536                     // Length of from = 1
537                     append(1);
538                     // Insert-address-token = <Octet 129>
539                     append(PduHeaders.FROM_INSERT_ADDRESS_TOKEN);
540                 } else {
541                     mStack.newbuf();
542                     PositionMarker fstart = mStack.mark();
543 
544                     // Address-present-token = <Octet 128>
545                     append(PduHeaders.FROM_ADDRESS_PRESENT_TOKEN);
546 
547                     temp = appendAddressType(from);
548                     if (temp == null) {
549                         return PDU_COMPOSE_CONTENT_ERROR;
550                     }
551 
552                     appendEncodedString(temp);
553 
554                     int flen = fstart.getLength();
555                     mStack.pop();
556                     appendValueLength(flen);
557                     mStack.copy();
558                 }
559                 break;
560 
561             case PduHeaders.READ_STATUS:
562             case PduHeaders.STATUS:
563             case PduHeaders.REPORT_ALLOWED:
564             case PduHeaders.PRIORITY:
565             case PduHeaders.DELIVERY_REPORT:
566             case PduHeaders.READ_REPORT:
567                 int octet = mPduHeader.getOctet(field);
568                 if (0 == octet) {
569                     return PDU_COMPOSE_FIELD_NOT_SET;
570                 }
571 
572                 appendOctet(field);
573                 appendOctet(octet);
574                 break;
575 
576             case PduHeaders.DATE:
577                 long date = mPduHeader.getLongInteger(field);
578                 if (-1 == date) {
579                     return PDU_COMPOSE_FIELD_NOT_SET;
580                 }
581 
582                 appendOctet(field);
583                 appendDateValue(date);
584                 break;
585 
586             case PduHeaders.SUBJECT:
587                 EncodedStringValue enString =
588                     mPduHeader.getEncodedStringValue(field);
589                 if (null == enString) {
590                     return PDU_COMPOSE_FIELD_NOT_SET;
591                 }
592 
593                 appendOctet(field);
594                 appendEncodedString(enString);
595                 break;
596 
597             case PduHeaders.MESSAGE_CLASS:
598                 byte[] messageClass = mPduHeader.getTextString(field);
599                 if (null == messageClass) {
600                     return PDU_COMPOSE_FIELD_NOT_SET;
601                 }
602 
603                 appendOctet(field);
604                 if (Arrays.equals(messageClass,
605                         PduHeaders.MESSAGE_CLASS_ADVERTISEMENT_STR.getBytes())) {
606                     appendOctet(PduHeaders.MESSAGE_CLASS_ADVERTISEMENT);
607                 } else if (Arrays.equals(messageClass,
608                         PduHeaders.MESSAGE_CLASS_AUTO_STR.getBytes())) {
609                     appendOctet(PduHeaders.MESSAGE_CLASS_AUTO);
610                 } else if (Arrays.equals(messageClass,
611                         PduHeaders.MESSAGE_CLASS_PERSONAL_STR.getBytes())) {
612                     appendOctet(PduHeaders.MESSAGE_CLASS_PERSONAL);
613                 } else if (Arrays.equals(messageClass,
614                         PduHeaders.MESSAGE_CLASS_INFORMATIONAL_STR.getBytes())) {
615                     appendOctet(PduHeaders.MESSAGE_CLASS_INFORMATIONAL);
616                 } else {
617                     appendTextString(messageClass);
618                 }
619                 break;
620 
621             case PduHeaders.EXPIRY:
622                 long expiry = mPduHeader.getLongInteger(field);
623                 if (-1 == expiry) {
624                     return PDU_COMPOSE_FIELD_NOT_SET;
625                 }
626 
627                 appendOctet(field);
628 
629                 mStack.newbuf();
630                 PositionMarker expiryStart = mStack.mark();
631 
632                 append(PduHeaders.VALUE_RELATIVE_TOKEN);
633                 appendLongInteger(expiry);
634 
635                 int expiryLength = expiryStart.getLength();
636                 mStack.pop();
637                 appendValueLength(expiryLength);
638                 mStack.copy();
639                 break;
640 
641             default:
642                 return PDU_COMPOSE_FIELD_NOT_SUPPORTED;
643         }
644 
645         return PDU_COMPOSE_SUCCESS;
646     }
647 
648     /**
649      * Make ReadRec.Ind.
650      */
makeReadRecInd()651     private int makeReadRecInd() {
652         if (mMessage == null) {
653             mMessage = new ByteArrayOutputStream();
654             mPosition = 0;
655         }
656 
657         // X-Mms-Message-Type
658         appendOctet(PduHeaders.MESSAGE_TYPE);
659         appendOctet(PduHeaders.MESSAGE_TYPE_READ_REC_IND);
660 
661         // X-Mms-MMS-Version
662         if (appendHeader(PduHeaders.MMS_VERSION) != PDU_COMPOSE_SUCCESS) {
663             return PDU_COMPOSE_CONTENT_ERROR;
664         }
665 
666         // Message-ID
667         if (appendHeader(PduHeaders.MESSAGE_ID) != PDU_COMPOSE_SUCCESS) {
668             return PDU_COMPOSE_CONTENT_ERROR;
669         }
670 
671         // To
672         if (appendHeader(PduHeaders.TO) != PDU_COMPOSE_SUCCESS) {
673             return PDU_COMPOSE_CONTENT_ERROR;
674         }
675 
676         // From
677         if (appendHeader(PduHeaders.FROM) != PDU_COMPOSE_SUCCESS) {
678             return PDU_COMPOSE_CONTENT_ERROR;
679         }
680 
681         // Date Optional
682         appendHeader(PduHeaders.DATE);
683 
684         // X-Mms-Read-Status
685         if (appendHeader(PduHeaders.READ_STATUS) != PDU_COMPOSE_SUCCESS) {
686             return PDU_COMPOSE_CONTENT_ERROR;
687         }
688 
689         // X-Mms-Applic-ID Optional(not support)
690         // X-Mms-Reply-Applic-ID Optional(not support)
691         // X-Mms-Aux-Applic-Info Optional(not support)
692 
693         return PDU_COMPOSE_SUCCESS;
694     }
695 
696     /**
697      * Make NotifyResp.Ind.
698      */
makeNotifyResp()699     private int makeNotifyResp() {
700         if (mMessage == null) {
701             mMessage = new ByteArrayOutputStream();
702             mPosition = 0;
703         }
704 
705         //    X-Mms-Message-Type
706         appendOctet(PduHeaders.MESSAGE_TYPE);
707         appendOctet(PduHeaders.MESSAGE_TYPE_NOTIFYRESP_IND);
708 
709         // X-Mms-Transaction-ID
710         if (appendHeader(PduHeaders.TRANSACTION_ID) != PDU_COMPOSE_SUCCESS) {
711             return PDU_COMPOSE_CONTENT_ERROR;
712         }
713 
714         // X-Mms-MMS-Version
715         if (appendHeader(PduHeaders.MMS_VERSION) != PDU_COMPOSE_SUCCESS) {
716             return PDU_COMPOSE_CONTENT_ERROR;
717         }
718 
719         //  X-Mms-Status
720         if (appendHeader(PduHeaders.STATUS) != PDU_COMPOSE_SUCCESS) {
721             return PDU_COMPOSE_CONTENT_ERROR;
722         }
723 
724         // X-Mms-Report-Allowed Optional (not support)
725         return PDU_COMPOSE_SUCCESS;
726     }
727 
728     /**
729      * Make Acknowledge.Ind.
730      */
makeAckInd()731     private int makeAckInd() {
732         if (mMessage == null) {
733             mMessage = new ByteArrayOutputStream();
734             mPosition = 0;
735         }
736 
737         //    X-Mms-Message-Type
738         appendOctet(PduHeaders.MESSAGE_TYPE);
739         appendOctet(PduHeaders.MESSAGE_TYPE_ACKNOWLEDGE_IND);
740 
741         // X-Mms-Transaction-ID
742         if (appendHeader(PduHeaders.TRANSACTION_ID) != PDU_COMPOSE_SUCCESS) {
743             return PDU_COMPOSE_CONTENT_ERROR;
744         }
745 
746         //     X-Mms-MMS-Version
747         if (appendHeader(PduHeaders.MMS_VERSION) != PDU_COMPOSE_SUCCESS) {
748             return PDU_COMPOSE_CONTENT_ERROR;
749         }
750 
751         // X-Mms-Report-Allowed Optional
752         appendHeader(PduHeaders.REPORT_ALLOWED);
753 
754         return PDU_COMPOSE_SUCCESS;
755     }
756 
757     /**
758      * Make Send.req.
759      */
makeSendReqPdu()760     private int makeSendReqPdu() {
761         if (mMessage == null) {
762             mMessage = new ByteArrayOutputStream();
763             mPosition = 0;
764         }
765 
766         // X-Mms-Message-Type
767         appendOctet(PduHeaders.MESSAGE_TYPE);
768         appendOctet(PduHeaders.MESSAGE_TYPE_SEND_REQ);
769 
770         // X-Mms-Transaction-ID
771         appendOctet(PduHeaders.TRANSACTION_ID);
772 
773         byte[] trid = mPduHeader.getTextString(PduHeaders.TRANSACTION_ID);
774         if (trid == null) {
775             // Transaction-ID should be set(by Transaction) before make().
776             throw new IllegalArgumentException("Transaction-ID is null.");
777         }
778         appendTextString(trid);
779 
780         //  X-Mms-MMS-Version
781         if (appendHeader(PduHeaders.MMS_VERSION) != PDU_COMPOSE_SUCCESS) {
782             return PDU_COMPOSE_CONTENT_ERROR;
783         }
784 
785         // Date Date-value Optional.
786         appendHeader(PduHeaders.DATE);
787 
788         // From
789         if (appendHeader(PduHeaders.FROM) != PDU_COMPOSE_SUCCESS) {
790             return PDU_COMPOSE_CONTENT_ERROR;
791         }
792 
793         boolean recipient = false;
794 
795         // To
796         if (appendHeader(PduHeaders.TO) != PDU_COMPOSE_CONTENT_ERROR) {
797             recipient = true;
798         }
799 
800         // Cc
801         if (appendHeader(PduHeaders.CC) != PDU_COMPOSE_CONTENT_ERROR) {
802             recipient = true;
803         }
804 
805         // Bcc
806         if (appendHeader(PduHeaders.BCC) != PDU_COMPOSE_CONTENT_ERROR) {
807             recipient = true;
808         }
809 
810         // Need at least one of "cc", "bcc" and "to".
811         if (false == recipient) {
812             return PDU_COMPOSE_CONTENT_ERROR;
813         }
814 
815         // Subject Optional
816         appendHeader(PduHeaders.SUBJECT);
817 
818         // X-Mms-Message-Class Optional
819         // Message-class-value = Class-identifier | Token-text
820         appendHeader(PduHeaders.MESSAGE_CLASS);
821 
822         // X-Mms-Expiry Optional
823         appendHeader(PduHeaders.EXPIRY);
824 
825         // X-Mms-Priority Optional
826         appendHeader(PduHeaders.PRIORITY);
827 
828         // X-Mms-Delivery-Report Optional
829         appendHeader(PduHeaders.DELIVERY_REPORT);
830 
831         // X-Mms-Read-Report Optional
832         appendHeader(PduHeaders.READ_REPORT);
833 
834         //    Content-Type
835         appendOctet(PduHeaders.CONTENT_TYPE);
836 
837         //  Message body
838         return makeMessageBody();
839     }
840 
841     /**
842      * Make message body.
843      */
makeMessageBody()844     private int makeMessageBody() {
845         // 1. add body informations
846         mStack.newbuf();  // Switching buffer because we need to
847 
848         PositionMarker ctStart = mStack.mark();
849 
850         // This contentTypeIdentifier should be used for type of attachment...
851         String contentType = new String(mPduHeader.getTextString(PduHeaders.CONTENT_TYPE));
852         Integer contentTypeIdentifier = mContentTypeMap.get(contentType);
853         if (contentTypeIdentifier == null) {
854             // content type is mandatory
855             return PDU_COMPOSE_CONTENT_ERROR;
856         }
857 
858         appendShortInteger(contentTypeIdentifier.intValue());
859 
860         // content-type parameter: start
861         PduBody body = ((SendReq) mPdu).getBody();
862         if (null == body || body.getPartsNum() == 0) {
863             // empty message
864             appendUintvarInteger(0);
865             mStack.pop();
866             mStack.copy();
867             return PDU_COMPOSE_SUCCESS;
868         }
869 
870         PduPart part;
871         try {
872             part = body.getPart(0);
873 
874             byte[] start = part.getContentId();
875             if (start != null) {
876                 appendOctet(PduPart.P_DEP_START);
877                 if (('<' == start[0]) && ('>' == start[start.length - 1])) {
878                     appendTextString(start);
879                 } else {
880                     appendTextString("<" + new String(start) + ">");
881                 }
882             }
883 
884             // content-type parameter: type
885             appendOctet(PduPart.P_CT_MR_TYPE);
886             appendTextString(part.getContentType());
887         }
888         catch (ArrayIndexOutOfBoundsException e){
889             e.printStackTrace();
890         }
891 
892         int ctLength = ctStart.getLength();
893         mStack.pop();
894         appendValueLength(ctLength);
895         mStack.copy();
896 
897         // 3. add content
898         int partNum = body.getPartsNum();
899         appendUintvarInteger(partNum);
900         for (int i = 0; i < partNum; i++) {
901             part = body.getPart(i);
902             mStack.newbuf();  // Leaving space for header lengh and data length
903             PositionMarker attachment = mStack.mark();
904 
905             mStack.newbuf();  // Leaving space for Content-Type length
906             PositionMarker contentTypeBegin = mStack.mark();
907 
908             byte[] partContentType = part.getContentType();
909 
910             if (partContentType == null) {
911                 // content type is mandatory
912                 return PDU_COMPOSE_CONTENT_ERROR;
913             }
914 
915             // content-type value
916             Integer partContentTypeIdentifier =
917                 mContentTypeMap.get(new String(partContentType));
918             if (partContentTypeIdentifier == null) {
919                 appendTextString(partContentType);
920             } else {
921                 appendShortInteger(partContentTypeIdentifier.intValue());
922             }
923 
924             /* Content-type parameter : name.
925              * The value of name, filename, content-location is the same.
926              * Just one of them is enough for this PDU.
927              */
928             byte[] name = part.getName();
929 
930             if (null == name) {
931                 name = part.getFilename();
932 
933                 if (null == name) {
934                     name = part.getContentLocation();
935 
936                     if (null == name) {
937                         /* at lease one of name, filename, Content-location
938                          * should be available.
939                          */
940                         return PDU_COMPOSE_CONTENT_ERROR;
941                     }
942                 }
943             }
944             appendOctet(PduPart.P_DEP_NAME);
945             appendTextString(name);
946 
947             // content-type parameter : charset
948             int charset = part.getCharset();
949             if (charset != 0) {
950                 appendOctet(PduPart.P_CHARSET);
951                 appendShortInteger(charset);
952             }
953 
954             int contentTypeLength = contentTypeBegin.getLength();
955             mStack.pop();
956             appendValueLength(contentTypeLength);
957             mStack.copy();
958 
959             // content id
960             byte[] contentId = part.getContentId();
961 
962             if (null != contentId) {
963                 appendOctet(PduPart.P_CONTENT_ID);
964                 if (('<' == contentId[0]) && ('>' == contentId[contentId.length - 1])) {
965                     appendQuotedString(contentId);
966                 } else {
967                     appendQuotedString("<" + new String(contentId) + ">");
968                 }
969             }
970 
971             // content-location
972             byte[] contentLocation = part.getContentLocation();
973             if (null != contentLocation) {
974             	appendOctet(PduPart.P_CONTENT_LOCATION);
975             	appendTextString(contentLocation);
976             }
977 
978             // content
979             int headerLength = attachment.getLength();
980 
981             int dataLength = 0; // Just for safety...
982             byte[] partData = part.getData();
983 
984             if (partData != null) {
985                 arraycopy(partData, 0, partData.length);
986                 dataLength = partData.length;
987             } else {
988                 InputStream cr = null;
989                 try {
990                     byte[] buffer = new byte[PDU_COMPOSER_BLOCK_SIZE];
991                     cr = mResolver.openInputStream(part.getDataUri());
992                     int len = 0;
993                     while ((len = cr.read(buffer)) != -1) {
994                         mMessage.write(buffer, 0, len);
995                         mPosition += len;
996                         dataLength += len;
997                     }
998                 } catch (FileNotFoundException e) {
999                     return PDU_COMPOSE_CONTENT_ERROR;
1000                 } catch (IOException e) {
1001                     return PDU_COMPOSE_CONTENT_ERROR;
1002                 } catch (RuntimeException e) {
1003                     return PDU_COMPOSE_CONTENT_ERROR;
1004                 } finally {
1005                     if (cr != null) {
1006                         try {
1007                             cr.close();
1008                         } catch (IOException e) {
1009                         }
1010                     }
1011                 }
1012             }
1013 
1014             if (dataLength != (attachment.getLength() - headerLength)) {
1015                 throw new RuntimeException("BUG: Length sanity check failed");
1016             }
1017 
1018             mStack.pop();
1019             appendUintvarInteger(headerLength);
1020             appendUintvarInteger(dataLength);
1021             mStack.copy();
1022         }
1023 
1024         return PDU_COMPOSE_SUCCESS;
1025     }
1026 
1027     /**
1028      *  Record current message informations.
1029      */
1030     static private class LengthRecordNode {
1031         ByteArrayOutputStream currentMessage = null;
1032         public int currentPosition = 0;
1033 
1034         public LengthRecordNode next = null;
1035     }
1036 
1037     /**
1038      * Mark current message position and stact size.
1039      */
1040     private class PositionMarker {
1041         private int c_pos;   // Current position
1042         private int currentStackSize;  // Current stack size
1043 
getLength()1044         int getLength() {
1045             // If these assert fails, likely that you are finding the
1046             // size of buffer that is deep in BufferStack you can only
1047             // find the length of the buffer that is on top
1048             if (currentStackSize != mStack.stackSize) {
1049                 throw new RuntimeException("BUG: Invalid call to getLength()");
1050             }
1051 
1052             return mPosition - c_pos;
1053         }
1054     }
1055 
1056     /**
1057      * This implementation can be OPTIMIZED to use only
1058      * 2 buffers. This optimization involves changing BufferStack
1059      * only... Its usage (interface) will not change.
1060      */
1061     private class BufferStack {
1062         private LengthRecordNode stack = null;
1063         private LengthRecordNode toCopy = null;
1064 
1065         int stackSize = 0;
1066 
1067         /**
1068          *  Create a new message buffer and push it into the stack.
1069          */
newbuf()1070         void newbuf() {
1071             // You can't create a new buff when toCopy != null
1072             // That is after calling pop() and before calling copy()
1073             // If you do, it is a bug
1074             if (toCopy != null) {
1075                 throw new RuntimeException("BUG: Invalid newbuf() before copy()");
1076             }
1077 
1078             LengthRecordNode temp = new LengthRecordNode();
1079 
1080             temp.currentMessage = mMessage;
1081             temp.currentPosition = mPosition;
1082 
1083             temp.next = stack;
1084             stack = temp;
1085 
1086             stackSize = stackSize + 1;
1087 
1088             mMessage = new ByteArrayOutputStream();
1089             mPosition = 0;
1090         }
1091 
1092         /**
1093          *  Pop the message before and record current message in the stack.
1094          */
pop()1095         void pop() {
1096             ByteArrayOutputStream currentMessage = mMessage;
1097             int currentPosition = mPosition;
1098 
1099             mMessage = stack.currentMessage;
1100             mPosition = stack.currentPosition;
1101 
1102             toCopy = stack;
1103             // Re using the top element of the stack to avoid memory allocation
1104 
1105             stack = stack.next;
1106             stackSize = stackSize - 1;
1107 
1108             toCopy.currentMessage = currentMessage;
1109             toCopy.currentPosition = currentPosition;
1110         }
1111 
1112         /**
1113          *  Append current message to the message before.
1114          */
copy()1115         void copy() {
1116             arraycopy(toCopy.currentMessage.toByteArray(), 0,
1117                     toCopy.currentPosition);
1118 
1119             toCopy = null;
1120         }
1121 
1122         /**
1123          *  Mark current message position
1124          */
mark()1125         PositionMarker mark() {
1126             PositionMarker m = new PositionMarker();
1127 
1128             m.c_pos = mPosition;
1129             m.currentStackSize = stackSize;
1130 
1131             return m;
1132         }
1133     }
1134 
1135     /**
1136      * Check address type.
1137      *
1138      * @param address address string without the postfix stinng type,
1139      *        such as "/TYPE=PLMN", "/TYPE=IPv6" and "/TYPE=IPv4"
1140      * @return PDU_PHONE_NUMBER_ADDRESS_TYPE if it is phone number,
1141      *         PDU_EMAIL_ADDRESS_TYPE if it is email address,
1142      *         PDU_IPV4_ADDRESS_TYPE if it is ipv4 address,
1143      *         PDU_IPV6_ADDRESS_TYPE if it is ipv6 address,
1144      *         PDU_UNKNOWN_ADDRESS_TYPE if it is unknown.
1145      */
checkAddressType(String address)1146     protected static int checkAddressType(String address) {
1147         /**
1148          * From OMA-TS-MMS-ENC-V1_3-20050927-C.pdf, section 8.
1149          * address = ( e-mail / device-address / alphanum-shortcode / num-shortcode)
1150          * e-mail = mailbox; to the definition of mailbox as described in
1151          * section 3.4 of [RFC2822], but excluding the
1152          * obsolete definitions as indicated by the "obs-" prefix.
1153          * device-address = ( global-phone-number "/TYPE=PLMN" )
1154          * / ( ipv4 "/TYPE=IPv4" ) / ( ipv6 "/TYPE=IPv6" )
1155          * / ( escaped-value "/TYPE=" address-type )
1156          *
1157          * global-phone-number = ["+"] 1*( DIGIT / written-sep )
1158          * written-sep =("-"/".")
1159          *
1160          * ipv4 = 1*3DIGIT 3( "." 1*3DIGIT ) ; IPv4 address value
1161          *
1162          * ipv6 = 4HEXDIG 7( ":" 4HEXDIG ) ; IPv6 address per RFC 2373
1163          */
1164 
1165         if (null == address) {
1166             return PDU_UNKNOWN_ADDRESS_TYPE;
1167         }
1168 
1169         if (address.matches(REGEXP_IPV4_ADDRESS_TYPE)) {
1170             // Ipv4 address.
1171             return PDU_IPV4_ADDRESS_TYPE;
1172         }else if (address.matches(REGEXP_PHONE_NUMBER_ADDRESS_TYPE)) {
1173             // Phone number.
1174             return PDU_PHONE_NUMBER_ADDRESS_TYPE;
1175         } else if (address.matches(REGEXP_EMAIL_ADDRESS_TYPE)) {
1176             // Email address.
1177             return PDU_EMAIL_ADDRESS_TYPE;
1178         } else if (address.matches(REGEXP_IPV6_ADDRESS_TYPE)) {
1179             // Ipv6 address.
1180             return PDU_IPV6_ADDRESS_TYPE;
1181         } else {
1182             // Unknown address.
1183             return PDU_UNKNOWN_ADDRESS_TYPE;
1184         }
1185     }
1186 }
1187