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395 lines
11 KiB
395 lines
11 KiB
4 years ago
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/*
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* $Id: versamail.c,v 1.11 2006/10/12 14:21:23 desrod Exp $
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*
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* versamail.c: Translate VersaMail data formats
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*
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* Copyright (c) 2004, Nick Piper
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*
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* This library is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Library General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library
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* General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef TIME_WITH_SYS_TIME
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# include <sys/time.h>
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# include <time.h>
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#else
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# ifdef HAVE_SYS_TIME_H
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# include <sys/time.h>
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# else
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# include <time.h>
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# endif
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#endif
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#include "pi-macros.h"
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#include "pi-versamail.h"
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/*
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Todo: What is unknown1 and 2?
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What is reserved 1 and 2?
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What is download ? (It's non zero, when there is more to d/l,
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and appears to be an ID, allocated
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by VersaMail. Maybe an index into another db?)
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How do we do attachments ? They are not kept in-line, but in another db.
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Attachments are related to unknown3.
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Why is mark = 2, when there is no mark set, and 3 when it is?
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*/
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void free_VersaMail(struct VersaMail *a)
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{
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if (a->messageUID)
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free(a->messageUID);
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if (a->to)
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free(a->to);
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if (a->from)
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free(a->from);
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if (a->cc)
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free(a->cc);
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if (a->bcc)
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free(a->bcc);
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if (a->subject)
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free(a->subject);
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if (a->dateString)
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free(a->dateString);
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if (a->body)
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free(a->body);
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if (a->replyTo)
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free(a->replyTo);
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if (a->unknown3)
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free(a->unknown3);
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}
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#define SHUFFLE_BUFFER(shuffle_distance) { \
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len -= shuffle_distance; \
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buffer += shuffle_distance; \
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}
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#define GET_BYTE_INTO(attrib) { \
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attrib = get_byte(buffer); \
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SHUFFLE_BUFFER(1); \
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}
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#define GET_SHORT_INTO(attrib) { \
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attrib = (unsigned int) get_short(buffer); \
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SHUFFLE_BUFFER(2); \
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}
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#define GET_STR_INTO(attrib) { \
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if (get_byte(buffer)) { \
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attrib = strdup(buffer); \
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SHUFFLE_BUFFER(strlen(buffer)); \
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} else { \
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attrib = NULL; \
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}; \
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buffer++; \
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len--; \
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}
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#define PUT_STR_FROM(attrib) { \
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if (attrib) { \
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strcpy(buffer, attrib); \
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SHUFFLE_BUFFER(strlen(buffer)); \
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} else \
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set_byte(buffer, 0); \
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buffer++; \
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len--; \
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}
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#define ADD_LENGTH(str, destlen) { \
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if (str) { \
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destlen += 1+strlen(str); \
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} else { \
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destlen++; \
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}; \
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} \
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#define CONVERT_TIME_T_PALM_TO_UNIX(t) (t=t-2082844800)
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#define CONVERT_TIME_T_UNIX_TO_PALM(t) (t=t+2082844800)
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int unpack_VersaMail(struct VersaMail *a, char *buffer, size_t len)
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{
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time_t date_t;
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struct tm *date_tm;
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char *start = buffer;
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/* 000000 - 000003 */
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a->imapuid = (unsigned long) get_long(buffer);
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SHUFFLE_BUFFER(4);
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/* This is different to the other databases, because Palm didn't
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write VersaMail :-) */
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/* 000004 - 000007 */
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date_t = (time_t) get_long(buffer);
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CONVERT_TIME_T_PALM_TO_UNIX(date_t);
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date_tm = localtime(&date_t);
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memcpy(&(a->date), date_tm, sizeof(struct tm));
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SHUFFLE_BUFFER(4);
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/* 000008 - 000009 */
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GET_SHORT_INTO(a->category);
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/* 00000A - 00000B */
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GET_SHORT_INTO(a->accountNo);
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/* 00000C - 00000D */
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GET_SHORT_INTO(a->unknown1);
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/* 00000E - 00000E */
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GET_BYTE_INTO(a->download);
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/* 00000F - 00000F */
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GET_BYTE_INTO(a->mark);
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/* of the above, bit 0 is mark, apparently bit 4 is header-only flag,
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and it looks like bit 1 is always set, which gives a normal
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value of 2 */
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/* 000010 - 000011 */
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GET_SHORT_INTO(a->unknown2);
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/* 000012 - 000013 */
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a->reserved1 = (get_byte(buffer));
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a->reserved2 = (get_byte(buffer + 1) >> 1);
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a->read = (get_byte(buffer + 1) && 1);
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SHUFFLE_BUFFER(2);
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/* This is the size, as provided by the imap server:
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* 1 FETCH (UID 12779 BODY[] {3377} .... )
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Size==3377
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I guess VersaMail uses it to determine how much
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more there might be to download. I don't think it uses it
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to know there IS more to download though, because
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the palm doesn't track most of the headers, so it'll never
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be able to calculate if there is more or not, exactly.
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*/
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/* 000014 - 000017 */
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a->msgSize = get_long(buffer);
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SHUFFLE_BUFFER(4);
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GET_STR_INTO(a->messageUID);
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GET_STR_INTO(a->to);
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GET_STR_INTO(a->from);
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GET_STR_INTO(a->cc);
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GET_STR_INTO(a->bcc);
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GET_STR_INTO(a->subject);
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GET_STR_INTO(a->dateString);
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GET_STR_INTO(a->body);
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GET_STR_INTO(a->replyTo);
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a->unknown3length = 0;
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a->unknown3 = NULL;
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a->attachmentCount = 0;
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if (len > 0) {
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a->unknown3 = (void *) malloc(len);
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/*
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printf("Msg has extra %d bytes. That's 4*%d + %d\n",
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len, len / 4, len % 4);
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*/
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/*
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Example:
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Byte 0: 0x 43 | C | 67 / Variable amount of 'rubbish'
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Byte 1: 0x 50 | P | 80 \ NOT neccessary !NULL
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Byte 2: 0x 0 | . | 0 /
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Byte 3: 0x 68 | h | 104 | Each attachment adds four bytes,
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Byte 4: 0x ffffffc0 | . | -64 | NULL, an int, then two signed ints
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Byte 5: 0x ffffff90 | . | -112 \
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Byte 6: 0x 0 | . | 0 /
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Byte 7: 0x 68 | h | 104 |
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Byte 8: 0x ffffffc0 | . | -64 |
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Byte 9: 0x ffffff92 | . | -110 \
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Byte 10: 0x 0 | . | 0 /
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Byte 11: 0x 68 | h | 104 |
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Byte 12: 0x ffffffc0 | . | -64 |
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Byte 13: 0x ffffff94 | . | -108 \
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Byte 14: 0x 0 | . | 0 /
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Byte 15: 0x 0 | . | 0 | Then we end with a block of
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Byte 16: 0x 0 | . | 0 | four NULLs
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Byte 17: 0x 0 | . | 0 \
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The 'rubbish' doesn't seem to be for alignment within the pdb, AFAIKS.
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*/
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a->attachmentCount = (len / 4) - 1;
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if (a->unknown3) {
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a->unknown3length = len;
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memcpy(a->unknown3, buffer, len);
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SHUFFLE_BUFFER(len);
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}
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}
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return (buffer - start);
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}
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int pack_VersaMail(struct VersaMail *a, char *buffer, size_t len)
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{
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time_t date_t;
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unsigned int destlen;
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char *start = buffer;
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destlen = 4 + 4 + 2 + 2 + 2 + 2 + 2 + 2 + 4 + a->unknown3length;
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ADD_LENGTH(a->messageUID, destlen);
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ADD_LENGTH(a->to, destlen);
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ADD_LENGTH(a->from, destlen);
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ADD_LENGTH(a->cc, destlen);
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ADD_LENGTH(a->bcc, destlen);
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ADD_LENGTH(a->subject, destlen);
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ADD_LENGTH(a->dateString, destlen);
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ADD_LENGTH(a->body, destlen);
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ADD_LENGTH(a->replyTo, destlen);
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if (!buffer)
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return destlen;
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if (len < destlen)
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return 0;
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set_long(buffer, a->imapuid);
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SHUFFLE_BUFFER(4);
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date_t = mktime(&(a->date));
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CONVERT_TIME_T_UNIX_TO_PALM(date_t);
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set_long(buffer, (unsigned long) date_t);
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SHUFFLE_BUFFER(4);
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set_short(buffer, a->category);
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SHUFFLE_BUFFER(2);
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set_short(buffer, a->accountNo);
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SHUFFLE_BUFFER(2);
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set_short(buffer, a->unknown1);
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SHUFFLE_BUFFER(2);
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set_byte(buffer, a->download);
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SHUFFLE_BUFFER(1);
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set_byte(buffer, a->mark);
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SHUFFLE_BUFFER(1);
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set_short(buffer, a->unknown2);
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SHUFFLE_BUFFER(2);
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set_byte(buffer, a->reserved1);
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set_byte(buffer + 1, ((a->reserved2 << 1) || a->read));
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SHUFFLE_BUFFER(2);
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set_long(buffer, a->msgSize);
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SHUFFLE_BUFFER(4);
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PUT_STR_FROM(a->messageUID);
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PUT_STR_FROM(a->to);
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PUT_STR_FROM(a->from);
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PUT_STR_FROM(a->cc);
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PUT_STR_FROM(a->bcc);
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PUT_STR_FROM(a->subject);
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PUT_STR_FROM(a->dateString);
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PUT_STR_FROM(a->body);
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PUT_STR_FROM(a->replyTo);
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if (a->unknown3length > 0) {
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memcpy(buffer, a->unknown3, a->unknown3length);
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}
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return (buffer - start);
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}
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int unpack_VersaMailAppInfo(struct VersaMailAppInfo *ai,
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unsigned char *record, size_t len)
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{
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int i;
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unsigned char *start = record;
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i = unpack_CategoryAppInfo(&ai->category, record, len);
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if (!i)
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return i;
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record += i;
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len -= i;
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return (record - start);
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}
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/*
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Message provided to the maintainer of pilot-mailsync:
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(the above implementation does not fully agree, BTW)
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-------- Original Message --------
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Subject: Re: QueueSync2.0
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Date: Sat, 31 Jan 2004 03:19:28 +0900
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From: Masaru matsumoto <matumoto@queuesoft.jp>
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To: Jochen Garcke <jochen@garcke.de>
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References: <401A7AE7.5090109@garcke.de>
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Hi,
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The definition of the database is to refer to the following.
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But, because I analyzed it, it has the possibility to be wrong.
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Write only information on VersaMail. Because there are many problems in
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ClieMail.
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typedef struct
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{
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UInt16 mu_reserved1 : 8;
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UInt16 mu_reserved2 : 7;
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UInt16 mu_read : 1;
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} mu_MailFlagsType;
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typedef struct {
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UInt32 mu_version;
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UInt32 mu_datetime;
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UInt16 mu_category;
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UInt16 mu_account_no;
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UInt16 mu_rfu1;
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UInt16 mu_mark;
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UInt16 mu_rfu2;
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mu_MailFlagsType mu_flags;
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UInt32 mu_msgSize;
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char mu_firstField;
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} mu_MailPackedDBRecordType;
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typedef mu_MailPackedDBRecordType * mu_MailPackedDBRecordPtr;
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mu_msgSize =
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strlen(subject)+strlen(contents)+strlen(dateString)+strlen(replyto)+4;
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Field sequence :
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||
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messageUID
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||
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to
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||
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from
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||
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cc
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||
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bcc
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subject
|
||
|
|
dateString
|
||
|
|
body
|
||
|
|
replayTo
|
||
|
|
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* vi: set ts=8 sw=4 sts=4 noexpandtab: cin */
|
||
|
|
/* ex: set tabstop=4 expandtab: */
|
||
|
|
/* Local Variables: */
|
||
|
|
/* indent-tabs-mode: t */
|
||
|
|
/* c-basic-offset: 8 */
|
||
|
|
/* End: */
|