FreeCalypso > hg > freecalypso-reveng

annotate miscprog/factdiff.c @ 323:cefa700d1b8f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
frbl: beginning of frbl2test
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 05 Mar 2020 22:05:01 +0000
parents 597143ba1c37
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
52
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1 /*
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
2 * The 64 KiB "factory block" at the end of the 2nd flash chip select on
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
3 * Pirelli DP-L10 phones is believed to contain juicy info (IMEI and RF
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
4 * calibration data), but the format is yet to be cracked.
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
5 *
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
6 * This program compares Pirelli factory block images that have been read
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
7 * out of several phones, seeking to determine which bytes are always the
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
8 * same and which bytes change from specimen to specimen.
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
9 *
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
10 * Written by Spacefalcon the Outlaw.
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
11 */
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
12
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
13 #include <sys/types.h>
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
14 #include <sys/file.h>
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
15 #include <stdio.h>
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
16 #include <stdlib.h>
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
17
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
18 u_char specimen0[65536];
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
19 char is_diff[65536];
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
20
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
21 read_specimen_file(filename, buf)
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
22 char *filename;
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
23 u_char *buf;
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
24 {
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
25 int fd, cc;
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
26
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
27 fd = open(filename, O_RDONLY);
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
28 if (fd < 0) {
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
29 perror(filename);
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
30 exit(1);
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
31 }
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
32 cc = read(fd, buf, 65536);
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
33 close(fd);
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
34 if (cc != 65536) {
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
35 fprintf(stderr, "%s: unable to read 64 KiB\n", filename);
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
36 exit(1);
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
37 }
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
38 }
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
39
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
40 process_comp_specimen(filename)
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
41 char *filename;
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
42 {
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
43 u_char this_spec[65536];
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
44 int i;
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
45
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
46 read_specimen_file(filename, this_spec);
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
47 for (i = 0; i < 65536; i++)
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
48 if (this_spec[i] != specimen0[i])
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
49 is_diff[i] = 1;
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
50 }
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
51
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
52 output()
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
53 {
53
00dedefbdfd1 factdiff: print the number of bytes in each varying chunk
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 52
diff changeset
54 int off, state, cstart, num;
52
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
55
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
56 for (off = 0; off < 65536; ) {
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
57 state = is_diff[off];
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
58 cstart = off;
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
59 while (off < 65536 && is_diff[off] == state)
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
60 off++;
53
00dedefbdfd1 factdiff: print the number of bytes in each varying chunk
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 52
diff changeset
61 printf("%04X-%04X: %s", cstart, off-1,
52
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
62 state ? "varying" : "constant");
53
00dedefbdfd1 factdiff: print the number of bytes in each varying chunk
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 52
diff changeset
63 if (state) {
00dedefbdfd1 factdiff: print the number of bytes in each varying chunk
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 52
diff changeset
64 num = off - cstart;
00dedefbdfd1 factdiff: print the number of bytes in each varying chunk
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 52
diff changeset
65 printf(" (%d byte%s)", num, num != 1 ? "s" : "");
00dedefbdfd1 factdiff: print the number of bytes in each varying chunk
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 52
diff changeset
66 }
00dedefbdfd1 factdiff: print the number of bytes in each varying chunk
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents: 52
diff changeset
67 putchar('\n');
52
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
68 }
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
69 }
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
70
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
71 main(argc, argv)
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
72 char **argv;
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
73 {
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
74 char **ap;
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
75
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
76 if (argc < 3) {
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
77 fprintf(stderr, "usage: %s specimen0 specimen1 ...\n", argv[0]);
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
78 exit(1);
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
79 }
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
80 read_specimen_file(argv[1], specimen0);
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
81 for (ap = argv + 2; *ap; ap++)
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
82 process_comp_specimen(*ap);
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
83 output();
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
84 exit(0);
103d996ed2d5 factdiff utility written
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
85 }