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| 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 } | |
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