1 /* 2 ** A utility for printing an SQLite database journal. 3 */ 4 #include <stdio.h> 5 #include <ctype.h> 6 #include <sys/types.h> 7 #include <sys/stat.h> 8 #include <fcntl.h> 9 #include <unistd.h> 10 #include <stdlib.h> 11 12 13 static int pagesize = 1024; 14 static int db = -1; 15 static int mxPage = 0; 16 17 static void out_of_memory(void){ 18 fprintf(stderr,"Out of memory...\n"); 19 exit(1); 20 } 21 22 static print_page(int iPg){ 23 unsigned char *aData; 24 int i, j; 25 aData = malloc(pagesize); 26 if( aData==0 ) out_of_memory(); 27 read(db, aData, pagesize); 28 fprintf(stdout, "Page %d:\n", iPg); 29 for(i=0; i<pagesize; i += 16){ 30 fprintf(stdout, " %03x: ",i); 31 for(j=0; j<16; j++){ 32 fprintf(stdout,"%02x ", aData[i+j]); 33 } 34 for(j=0; j<16; j++){ 35 fprintf(stdout,"%c", isprint(aData[i+j]) ? aData[i+j] : '.'); 36 } 37 fprintf(stdout,"\n"); 38 } 39 free(aData); 40 } 41 42 int main(int argc, char **argv){ 43 struct stat sbuf; 44 unsigned int u; 45 int rc; 46 unsigned char zBuf[10]; 47 unsigned char zBuf2[sizeof(u)]; 48 if( argc!=2 ){ 49 fprintf(stderr,"Usage: %s FILENAME\n", argv[0]); 50 exit(1); 51 } 52 db = open(argv[1], O_RDONLY); 53 if( db<0 ){ 54 fprintf(stderr,"%s: can't open %s\n", argv[0], argv[1]); 55 exit(1); 56 } 57 read(db, zBuf, 8); 58 if( zBuf[7]==0xd6 ){ 59 read(db, &u, sizeof(u)); 60 printf("Records in Journal: %u\n", u); 61 read(db, &u, sizeof(u)); 62 printf("Magic Number: 0x%08x\n", u); 63 } 64 read(db, zBuf2, sizeof(zBuf2)); 65 u = zBuf2[0]<<24 | zBuf2[1]<<16 | zBuf2[2]<<8 | zBuf2[3]; 66 printf("Database Size: %u\n", u); 67 while( read(db, zBuf2, sizeof(zBuf2))==sizeof(zBuf2) ){ 68 u = zBuf2[0]<<24 | zBuf2[1]<<16 | zBuf2[2]<<8 | zBuf2[3]; 69 print_page(u); 70 if( zBuf[7]==0xd6 ){ 71 read(db, &u, sizeof(u)); 72 printf("Checksum: 0x%08x\n", u); 73 } 74 } 75 close(db); 76 } 77