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comparison simtool/bfsearch.c @ 145:c2889812788e

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fc-simtool bfsearch implemented
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 25 Feb 2021 06:03:13 +0000
parents
children 8d55571c8118
comparison
equal deleted inserted replaced
144:60411fd4b803 145:c2889812788e
1 /*
2 * This module implements a brute force search of file ID space at a given
3 * file system directory level.
4 */
5
6 #include <sys/types.h>
7 #include <ctype.h>
8 #include <stdio.h>
9 #include <stdlib.h>
10 #include "simresp.h"
11
12 static
13 parse_skip_ids(argv, array, total)
14 char **argv;
15 unsigned *array, total;
16 {
17 unsigned n;
18
19 for (n = 0; n < total; n++) {
20 if (!isxdigit(argv[n][0]) || !isxdigit(argv[n][1]) ||
21 !isxdigit(argv[n][2]) || !isxdigit(argv[n][3]) ||
22 argv[n][4]) {
23 fprintf(stderr, "error: argument is not 4-digit hex\n");
24 return(-1);
25 }
26 array[n] = strtoul(argv[n], 0, 16);
27 }
28 return(0);
29 }
30
31 cmd_bfsearch(argc, argv, outf)
32 char **argv;
33 FILE *outf;
34 {
35 unsigned skip_ids[8], num_skip_ids;
36 unsigned bfs, n;
37 int rc;
38
39 num_skip_ids = argc - 1;
40 rc = parse_skip_ids(argv + 1, skip_ids, num_skip_ids);
41 if (rc < 0)
42 return(rc);
43 rc = elem_select_op(skip_ids[0]);
44 if (rc < 0)
45 return(rc);
46 if (!rc) {
47 fprintf(stderr, "error: starting file ID 0x%04X not found\n",
48 skip_ids[0]);
49 return(-1);
50 }
51 for (bfs = 0; bfs <= 0xFFFF; bfs++) {
52 for (n = 0; n < num_skip_ids; n++) {
53 if (bfs == skip_ids[n])
54 break;
55 }
56 if (n < num_skip_ids)
57 continue;
58 rc = elem_select_op(bfs);
59 if (rc < 0)
60 return(rc);
61 if (!rc)
62 continue;
63 rc = get_response_op();
64 if (rc < 0)
65 return(rc);
66 if (sim_resp_data_len < 14)
67 printf("%04X: too-short response struct\n", bfs);
68 else {
69 switch (sim_resp_data[6]) {
70 case 0x01:
71 printf("%04X: MF\n", bfs);
72 break;
73 case 0x02:
74 printf("%04X: DF\n", bfs);
75 break;
76 case 0x04:
77 printf("%04X: EF (struct %02X)\n", bfs,
78 sim_resp_data[13]);
79 break;
80 default:
81 printf("%04X: unknown file type %02X\n", bfs,
82 sim_resp_data[6]);
83 }
84 }
85 rc = elem_select_op(skip_ids[0]);
86 if (rc < 0)
87 return(rc);
88 if (!rc) {
89 fprintf(stderr,
90 "reselecting starting file ID 0x%04X not-found error\n",
91 skip_ids[0]);
92 return(-1);
93 }
94 }
95 return(0);
96 }