/* ** 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); }