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#include <stdlib.h>
#include <stdint.h>
#include <ctype.h>
#include <fcntl.h>
#include <unistd.h>
#include "mystdlib.h"
enum { g_outfiles = 17 };
static struct {
int outfiles[g_outfiles];
uint8_t *outbuf [g_outfiles];
size_t outfill [g_outfiles];
} g_state;
static int g_northern_version;;
static uint8_t cp437_to_iso8859_1_table[] = {
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
0xc7, 0xfc, 0xe9, 0xe2, 0xe4, 0xe0, 0xe5, 0xe7, 0xea, 0xeb, 0xe8, 0xef, 0xee, 0xec, 0xc4, 0xc5,
0xc9, 0xe6, 0xc6, 0xf4, 0xf6, 0xf2, 0xfb, 0xf9, 0xff, 0xd6, 0xdc, 0xa2, 0xa3, 0xa5, 0x2e, 0x2e,
0xe1, 0xed, 0xf3, 0xfa, 0xf1, 0xd1, 0xaa, 0xba, 0xbf, 0x2e, 0xac, 0xbd, 0xbc, 0xa1, 0xab, 0xbb,
0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e,
0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e,
0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e,
0x2e, 0xdf, 0x2e, 0x2e, 0x2e, 0x2e, 0xb5, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e, 0x2e,
0x2e, 0xb1, 0x2e, 0x2e, 0x2e, 0x2e, 0xf7, 0x2e, 0xb0, 0x2e, 0xb7, 0x2e, 0x2e, 0xb2, 0x2e, 0xa0
};
static void dump_string( uint8_t *start, size_t len, int file ) {
uint8_t *dest = g_state.outbuf[file] + g_state.outfill[file];
g_state.outfill[file] += len;
while( len-- )
*(dest++) = cp437_to_iso8859_1_table[ *(start++) ];
}
static void dump_field( uint8_t **end, int file ) {
uint8_t len = (*end)[-1];
*end -= len + 1;
dump_string( *end, len, file);
}
static void finish_record( ) {
int i;
for( i=0; i<g_outfiles; ++i )
*( g_state.outbuf[i] + g_state.outfill[i]++ ) = '\n';
}
static uint16_t load_word( uint8_t *table_start, uint16_t base, int offset ) {
int dword_offset = offset >> 1;
/* If a word(subflag, t_off) would span over the end of a 0x4000
byte page, it is placed on the next page. All other words are
shifted backwards, as well. */
table_start += 4;
if( base + 4 + 4 * dword_offset > 0x1ffc )
table_start += 3 & ( 4 - ( base & 3 ) );
return ((uint16_t*)table_start)[offset];
}
static void dump_primary( uint8_t *end, uint32_t flags ) {
/* First dump type of record (should be 1) */
dump_string( end, 1, 0 );
/* Dump first 5 chars of zip, they're always there */
dump_string( end -= 5, 5, 1 );
/* Dump first 5 chars of prefix, they're always here in s and w */
if( !g_northern_version )
dump_string( end -= 5, 5, 2 );
/* There is another version of the zip code present, if this bit is set */
if( flags & 0x0080 ) dump_string( end -= 5, 5, 3 );
/* There is an unclear X present, if this bit is set */
if( flags & 0x0040 ) dump_string( end -= 1, 1, 4 );
/* There is another version of the prefix present, if this bit is set */
if( flags & 0x0020 ) {
if( !g_northern_version )
dump_string( end -= 5, 5, 5 );
else
dump_field( &end, 5 );
}
if( flags & 0x0010 ) dump_field( &end, 6 );
if( flags & 0x0008 ) dump_field( &end, 7 );
if( flags & 0x0004 ) dump_field( &end, 8 );
if( flags & 0x0002 ) dump_field( &end, 9 );
if( flags & 0x0001 ) dump_field( &end, 10 );
if( flags & 0x8000 ) dump_field( &end, 11 );
if( flags & 0x4000 ) dump_field( &end, 12 );
if( flags & 0x2000 ) dump_field( &end, 13 );
if( flags & 0x1000 ) dump_field( &end, 14 );
dump_field( &end, 15 );
/* Dump first 5 chars of prefix, they're always here in no */
if( g_northern_version )
dump_field( &end, 2 );
dump_field( &end, 16 );
}
static void act_on_record( uint8_t * end, uint16_t base ) {
uint16_t *rec = (uint16_t*)end;
uint8_t *e = end;
uint16_t num_dwords = rec[0];
uint16_t flagbytes = rec[1];
uint32_t flags = 0;
int i;
for (i=0; i<flagbytes; ++i) flags = (flags<<8) | *--end;
// printf( "-------- %03d: %06X\n", num_dwords, flags );
for (i = 0; i < num_dwords; i++ ) {
uint16_t subflag = load_word( e, base, 2*i );
uint16_t t_off = load_word( e, base, 2*i+1 );
uint8_t *rec_start = end - t_off;
if (i == 0)
dump_primary( rec_start, flags );
else {
uint8_t * rec_end = end - ( ( i+1 == num_dwords ) ? 0 : load_word( e, base, 2*i+3 ) );
printf( "(%04X): ", subflag );
// dump_string( rec_start, rec_end, file );
while ( rec_start < rec_end )
putchar( cp437_to_iso8859_1_table[ *(rec_start++) ] );
putchar(10);
}
}
finish_record();
}
int main( int args, char **argv ) {
char filename[1024];
MAP data, index;
uint32_t * indoff;
size_t limit;
int i;
if( args != 3 ) {
fprintf( stderr, "Syntax: %s <dumpfile> <indexfile>\n", argv[0] );
exit(1);
}
for( i=0; i<g_outfiles; ++i )
{
sprintf( filename, "%02d_unknown", i+1 );
g_state.outfiles[i] = open( filename, O_WRONLY | O_APPEND | O_CREAT, 0644 );
g_state.outbuf[i] = malloc(8192*4096);
g_state.outfill[i] = 0;
}
data = map_file( argv[1], 1 );
index = map_file( argv[2], 1 );
if( !data || !index )
exit( 1 );
g_northern_version = data->addr[0x21e] != 5;
/* Each entry in outfile[0] is flag + \n, i.e. 3 bytes
We want to flush at ever percent progress */
limit = 3 * ( ( index->size / 4 ) / 100 );
for( indoff = (uint32_t*)(index->addr + 8);
indoff < (uint32_t*)(index->addr + index->size) && *indoff;
indoff++ ) {
// printf( "\nActing on record at off: %08X\n", *indoff );
act_on_record( data->addr + *indoff, *indoff & 0x1fff );
/* Write out results */
if( g_state.outfill[0] > limit )
for( i=0; i<g_outfiles; ++i ) {
if( g_state.outfill[i] > 1024*1024*6 ) printf( "Large: %zd\n", g_state.outfill[i] );
write( g_state.outfiles[i], g_state.outbuf[i], g_state.outfill[i] );
g_state.outfill[i] = 0;
}
}
for( i=0; i<g_outfiles; ++i ) {
write( g_state.outfiles[i], g_state.outbuf[i], g_state.outfill[i] );
close( g_state.outfiles[i] );
}
unmap_file( &data );
unmap_file( &index );
}
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