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annotate simtool/restorebin.c @ 179:efe944a5c4e3

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doc/Brute-force-search: update for data directory rename
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 02 Mar 2021 05:20:19 +0000
parents bd19dc7591ec
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * This module implements the restore-file command; this command
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3 * reads binary files previously saved with the savebin command
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4 * and writes the backed-up bits back to the SIM.
1
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5 */
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6
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7 #include <sys/types.h>
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8 #include <sys/file.h>
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9 #include <sys/stat.h>
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10 #include <ctype.h>
1
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11 #include <stdio.h>
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12 #include <stdlib.h>
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13 #include <unistd.h>
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14 #include "curfile.h"
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15
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16 restore_bin_transparent(data)
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17 u_char *data;
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18 {
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19 unsigned off, cc;
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20 int rc;
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21
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22 for (off = 0; off < curfile_total_size; off += cc) {
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23 cc = curfile_total_size - off;
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24 if (cc > 255)
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25 cc = 255;
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26 rc = update_bin_op(off, data + off, cc);
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27 if (rc < 0)
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28 return(rc);
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29 }
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30 return(0);
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31 }
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32
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33 restore_bin_records(data)
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34 u_char *data;
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35 {
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36 unsigned recno;
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37 u_char *dp;
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38 int rc;
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39
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40 dp = data;
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41 for (recno = 1; recno <= curfile_record_count; recno++) {
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42 rc = update_rec_op(recno, 0x04, dp, curfile_record_len);
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43 if (rc < 0)
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44 return(rc);
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45 dp += curfile_record_len;
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46 }
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47 return(0);
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48 }
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49
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50 restore_bin_cyclic(data)
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51 u_char *data;
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52 {
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53 unsigned count;
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54 u_char *dp;
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55 int rc;
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56
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57 dp = data + curfile_total_size;
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58 for (count = 0; count < curfile_record_count; count++) {
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59 dp -= curfile_record_len;
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60 rc = update_rec_op(0, 0x03, dp, curfile_record_len);
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61 if (rc < 0)
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62 return(rc);
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63 }
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64 return(0);
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65 }
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66
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67 cmd_restore_file(argc, argv)
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68 char **argv;
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69 {
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70 int file_id, rc, fd;
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71 struct stat st;
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72 u_char *databuf;
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73
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74 if (isxdigit(argv[1][0]) && isxdigit(argv[1][1]) &&
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75 isxdigit(argv[1][2]) && isxdigit(argv[1][3]) && !argv[1][4])
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76 file_id = strtoul(argv[1], 0, 16);
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77 else
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78 file_id = find_symbolic_file_name(argv[1]);
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79 if (file_id < 0) {
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80 fprintf(stderr,
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81 "error: file ID argument is not a hex value or a recognized symbolic name\n");
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82 return(-1);
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83 }
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84 rc = select_op(file_id);
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85 if (rc < 0)
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86 return(rc);
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87 rc = parse_ef_select_response();
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88 if (rc < 0)
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89 return(rc);
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90 if (!curfile_total_size) {
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91 printf("SIM indicates file of zero length, nothing to do\n");
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92 return(0);
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93 }
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94 fd = open(argv[2], O_RDONLY);
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95 if (fd < 0) {
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96 perror(argv[2]);
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97 return(-1);
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98 }
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99 fstat(fd, &st);
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100 if ((st.st_mode & S_IFMT) != S_IFREG) {
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101 fprintf(stderr, "error: %s is not a regular file\n", argv[2]);
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102 close(fd);
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103 return(-1);
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104 }
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105 if (st.st_size != curfile_total_size) {
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106 fprintf(stderr,
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107 "error: length of %s does not match SIM EF length of %u bytes\n",
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108 argv[2], curfile_total_size);
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109 close(fd);
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110 return(-1);
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111 }
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112 databuf = malloc(curfile_total_size);
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113 if (!databuf) {
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114 perror("malloc for file data");
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115 close(fd);
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116 return(-1);
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117 }
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118 read(fd, databuf, curfile_total_size);
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119 close(fd);
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120 switch (curfile_structure) {
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121 case 0x00:
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122 /* transparent */
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123 rc = restore_bin_transparent(databuf);
1
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124 break;
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125 case 0x01:
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126 /* record-based */
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127 rc = restore_bin_records(databuf);
1
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128 break;
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129 case 0x03:
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130 /* cyclic */
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131 rc = restore_bin_cyclic(databuf);
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132 break;
1
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133 }
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134 free(databuf);
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135 return(rc);
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136 }