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comparison simtool/restorebin.c @ 16:a6ca422323b9

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simtool: saverestore.c split into savebin.c and restorebin.c
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 12 Feb 2021 01:41:21 +0000
parents simtool/saverestore.c@2071b28cd0c7
children 54cebab70c19
comparison
equal deleted inserted replaced
15:5390dce9faa4 16:a6ca422323b9
1 /*
2 * This module implements the restore-file command; this command
3 * reads binary files previously saved with the savebin command
4 * and writes the backed-up bits back to the SIM.
5 */
6
7 #include <sys/types.h>
8 #include <sys/file.h>
9 #include <sys/stat.h>
10 #include <ctype.h>
11 #include <stdio.h>
12 #include <stdlib.h>
13 #include <unistd.h>
14 #include "curfile.h"
15
16 static
17 restore_transparent(data)
18 u_char *data;
19 {
20 unsigned off, cc;
21 int rc;
22
23 for (off = 0; off < curfile_total_size; off += cc) {
24 cc = curfile_total_size - off;
25 if (cc > 255)
26 cc = 255;
27 rc = update_bin_op(off, data + off, cc);
28 if (rc < 0)
29 return(rc);
30 }
31 return(0);
32 }
33
34 static
35 restore_records(data)
36 u_char *data;
37 {
38 unsigned recno;
39 u_char *dp;
40 int rc;
41
42 dp = data;
43 for (recno = 1; recno <= curfile_record_count; recno++) {
44 rc = update_rec_op(recno, 0x04, dp, curfile_record_len);
45 if (rc < 0)
46 return(rc);
47 dp += curfile_record_len;
48 }
49 return(0);
50 }
51
52 cmd_restore_file(argc, argv)
53 char **argv;
54 {
55 int file_id, rc, fd;
56 struct stat st;
57 u_char *databuf;
58
59 if (isxdigit(argv[1][0]) && isxdigit(argv[1][1]) &&
60 isxdigit(argv[1][2]) && isxdigit(argv[1][3]) && !argv[1][4])
61 file_id = strtoul(argv[1], 0, 16);
62 else
63 file_id = find_symbolic_file_name(argv[1]);
64 if (file_id < 0) {
65 fprintf(stderr,
66 "error: file ID argument is not a hex value or a recognized symbolic name\n");
67 return(-1);
68 }
69 rc = select_op(file_id);
70 if (rc < 0)
71 return(rc);
72 rc = parse_ef_select_response();
73 if (rc < 0)
74 return(rc);
75 if (!curfile_total_size) {
76 printf("SIM indicates file of zero length, nothing to do\n");
77 return(0);
78 }
79 fd = open(argv[2], O_RDONLY);
80 if (fd < 0) {
81 perror(argv[2]);
82 return(-1);
83 }
84 fstat(fd, &st);
85 if ((st.st_mode & S_IFMT) != S_IFREG) {
86 fprintf(stderr, "error: %s is not a regular file\n", argv[2]);
87 close(fd);
88 return(-1);
89 }
90 if (st.st_size != curfile_total_size) {
91 fprintf(stderr,
92 "error: length of %s does not match SIM EF length of %u bytes\n",
93 argv[2], curfile_total_size);
94 close(fd);
95 return(-1);
96 }
97 databuf = malloc(curfile_total_size);
98 if (!databuf) {
99 perror("malloc for file data");
100 close(fd);
101 return(-1);
102 }
103 read(fd, databuf, curfile_total_size);
104 close(fd);
105 switch (curfile_structure) {
106 case 0x00:
107 /* transparent */
108 rc = restore_transparent(databuf);
109 break;
110 case 0x01:
111 /* record-based */
112 rc = restore_records(databuf);
113 break;
114 case 0x03:
115 fprintf(stderr, "error: cyclic files are not supported\n");
116 rc = -1;
117 }
118 free(databuf);
119 return(rc);
120 }