1
2 #pragma ident "%Z%%M% %I% %E% SMI"
3
4 /*
5 ** A utility for printing an SQLite database journal.
6 */
7 #include <stdio.h>
8 #include <ctype.h>
9 #include <sys/types.h>
10 #include <sys/stat.h>
11 #include <fcntl.h>
12 #include <unistd.h>
13 #include <stdlib.h>
14
15
16 static int pagesize = 1024;
17 static int db = -1;
18 static int mxPage = 0;
19
out_of_memory(void)20 static void out_of_memory(void){
21 fprintf(stderr,"Out of memory...\n");
22 exit(1);
23 }
24
print_page(int iPg)25 static print_page(int iPg){
26 unsigned char *aData;
27 int i, j;
28 aData = malloc(pagesize);
29 if( aData==0 ) out_of_memory();
30 read(db, aData, pagesize);
31 fprintf(stdout, "Page %d:\n", iPg);
32 for(i=0; i<pagesize; i += 16){
33 fprintf(stdout, " %03x: ",i);
34 for(j=0; j<16; j++){
35 fprintf(stdout,"%02x ", aData[i+j]);
36 }
37 for(j=0; j<16; j++){
38 fprintf(stdout,"%c", isprint(aData[i+j]) ? aData[i+j] : '.');
39 }
40 fprintf(stdout,"\n");
41 }
42 free(aData);
43 }
44
main(int argc,char ** argv)45 int main(int argc, char **argv){
46 struct stat sbuf;
47 unsigned int u;
48 int rc;
49 unsigned char zBuf[10];
50 unsigned char zBuf2[sizeof(u)];
51 if( argc!=2 ){
52 fprintf(stderr,"Usage: %s FILENAME\n", argv[0]);
53 exit(1);
54 }
55 db = open(argv[1], O_RDONLY);
56 if( db<0 ){
57 fprintf(stderr,"%s: can't open %s\n", argv[0], argv[1]);
58 exit(1);
59 }
60 read(db, zBuf, 8);
61 if( zBuf[7]==0xd6 ){
62 read(db, &u, sizeof(u));
63 printf("Records in Journal: %u\n", u);
64 read(db, &u, sizeof(u));
65 printf("Magic Number: 0x%08x\n", u);
66 }
67 read(db, zBuf2, sizeof(zBuf2));
68 u = zBuf2[0]<<24 | zBuf2[1]<<16 | zBuf2[2]<<8 | zBuf2[3];
69 printf("Database Size: %u\n", u);
70 while( read(db, zBuf2, sizeof(zBuf2))==sizeof(zBuf2) ){
71 u = zBuf2[0]<<24 | zBuf2[1]<<16 | zBuf2[2]<<8 | zBuf2[3];
72 print_page(u);
73 if( zBuf[7]==0xd6 ){
74 read(db, &u, sizeof(u));
75 printf("Checksum: 0x%08x\n", u);
76 }
77 }
78 close(db);
79 }
80