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/*
** A utility for printing an SQLite database journal.
*/
#include <stdio.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
static int pagesize = 1024;
static int db = -1;
static int mxPage = 0;
static void out_of_memory(void){
fprintf(stderr,"Out of memory...\n");
exit(1);
}
static print_page(int iPg){
unsigned char *aData;
int i, j;
aData = malloc(pagesize);
if( aData==0 ) out_of_memory();
read(db, aData, pagesize);
fprintf(stdout, "Page %d:\n", iPg);
for(i=0; i<pagesize; i += 16){
fprintf(stdout, " %03x: ",i);
for(j=0; j<16; j++){
fprintf(stdout,"%02x ", aData[i+j]);
}
for(j=0; j<16; j++){
fprintf(stdout,"%c", isprint(aData[i+j]) ? aData[i+j] : '.');
}
fprintf(stdout,"\n");
}
free(aData);
}
int main(int argc, char **argv){
struct stat sbuf;
unsigned int u;
int rc;
unsigned char zBuf[10];
unsigned char zBuf2[sizeof(u)];
if( argc!=2 ){
fprintf(stderr,"Usage: %s FILENAME\n", argv[0]);
exit(1);
}
db = open(argv[1], O_RDONLY);
if( db<0 ){
fprintf(stderr,"%s: can't open %s\n", argv[0], argv[1]);
exit(1);
}
read(db, zBuf, 8);
if( zBuf[7]==0xd6 ){
read(db, &u, sizeof(u));
printf("Records in Journal: %u\n", u);
read(db, &u, sizeof(u));
printf("Magic Number: 0x%08x\n", u);
}
read(db, zBuf2, sizeof(zBuf2));
u = zBuf2[0]<<24 | zBuf2[1]<<16 | zBuf2[2]<<8 | zBuf2[3];
printf("Database Size: %u\n", u);
while( read(db, zBuf2, sizeof(zBuf2))==sizeof(zBuf2) ){
u = zBuf2[0]<<24 | zBuf2[1]<<16 | zBuf2[2]<<8 | zBuf2[3];
print_page(u);
if( zBuf[7]==0xd6 ){
read(db, &u, sizeof(u));
printf("Checksum: 0x%08x\n", u);
}
}
close(db);
}
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