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annotate simtool/saverestore.c @ 100:fa7005185b84

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fc-simtool: restore-file command implemented
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 25 Jan 2021 01:23:54 +0000
parents 2e35070d289f
children b563ff1c1a2a
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99
2e35070d289f fc-simtool: savebin command implemented
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1 /*
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2 * This module implements commands for saving SIM file content in UNIX host
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3 * files and restoring these backups back to the SIM.
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4 */
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5
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6 #include <sys/types.h>
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7 #include <sys/file.h>
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8 #include <sys/stat.h>
99
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9 #include <stdio.h>
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10 #include <stdlib.h>
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11 #include <unistd.h>
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12 #include <pcsclite.h>
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13 #include <winscard.h>
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14 #include "globals.h"
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15
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16 static
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17 savebin_transparent(outf)
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18 FILE *outf;
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19 {
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20 unsigned off, cc;
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21 int rc;
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22
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23 for (off = 0; off < curfile_total_size; off += cc) {
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24 cc = curfile_total_size - off;
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25 if (cc > 256)
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26 cc = 256;
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27 rc = readbin_op(off, cc);
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28 if (rc < 0)
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29 return(rc);
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30 fwrite(sim_resp_data, 1, cc, outf);
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31 }
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32 return(0);
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33 }
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34
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35 static
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36 savebin_records(outf)
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37 FILE *outf;
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38 {
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39 unsigned recno;
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40 int rc;
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41
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42 for (recno = 1; recno <= curfile_record_count; recno++) {
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43 rc = readrec_op(recno, 0x04, curfile_record_len);
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44 if (rc < 0)
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45 return(rc);
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46 fwrite(sim_resp_data, curfile_record_len, 1, outf);
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47 }
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48 return(0);
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49 }
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50
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51 cmd_savebin(argc, argv)
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52 char **argv;
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53 {
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54 int file_id, rc;
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55 unsigned readlen;
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56 FILE *of;
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57
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58 if (isxdigit(argv[1][0]) && isxdigit(argv[1][1]) &&
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59 isxdigit(argv[1][2]) && isxdigit(argv[1][3]) && !argv[1][4])
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60 file_id = strtoul(argv[1], 0, 16);
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61 else
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62 file_id = find_symbolic_file_name(argv[1]);
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63 if (file_id < 0) {
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64 fprintf(stderr,
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65 "error: file ID argument is not a hex value or a recognized symbolic name\n");
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66 return(-1);
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67 }
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68 rc = select_op(file_id);
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69 if (rc < 0)
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70 return(rc);
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71 rc = parse_ef_select_response();
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72 if (rc < 0)
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73 return(rc);
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74 of = fopen(argv[2], "w");
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75 if (!of) {
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76 perror(argv[2]);
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77 return(-1);
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78 }
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79 switch (curfile_structure) {
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80 case 0x00:
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81 /* transparent */
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82 rc = savebin_transparent(of);
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83 break;
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84 case 0x01:
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85 case 0x03:
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86 /* record-based */
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87 rc = savebin_records(of);
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88 break;
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89 }
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90 fclose(of);
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91 return(rc);
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92 }
100
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93
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94 static
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95 restore_transparent(data)
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96 u_char *data;
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97 {
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98 unsigned off, cc;
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99 int rc;
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100
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101 for (off = 0; off < curfile_total_size; off += cc) {
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102 cc = curfile_total_size - off;
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103 if (cc > 255)
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104 cc = 255;
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105 rc = update_bin_op(off, data + off, cc);
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106 if (rc < 0)
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107 return(rc);
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108 }
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109 return(0);
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110 }
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111
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112 static
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113 restore_records(data)
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114 u_char *data;
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115 {
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116 unsigned recno;
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117 u_char *dp;
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118 int rc;
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119
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120 dp = data;
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121 for (recno = 1; recno <= curfile_record_count; recno++) {
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122 rc = update_rec_op(recno, 0x04, dp, curfile_record_len);
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123 if (rc < 0)
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124 return(rc);
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125 dp += curfile_record_len;
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126 }
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127 return(0);
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128 }
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129
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130 cmd_restore_file(argc, argv)
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131 char **argv;
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132 {
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133 int file_id, rc, fd;
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134 struct stat st;
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135 u_char *databuf;
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136
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137 if (isxdigit(argv[1][0]) && isxdigit(argv[1][1]) &&
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138 isxdigit(argv[1][2]) && isxdigit(argv[1][3]) && !argv[1][4])
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139 file_id = strtoul(argv[1], 0, 16);
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140 else
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141 file_id = find_symbolic_file_name(argv[1]);
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diff changeset
142 if (file_id < 0) {
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143 fprintf(stderr,
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144 "error: file ID argument is not a hex value or a recognized symbolic name\n");
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145 return(-1);
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146 }
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147 rc = select_op(file_id);
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148 if (rc < 0)
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149 return(rc);
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150 rc = parse_ef_select_response();
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diff changeset
151 if (rc < 0)
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diff changeset
152 return(rc);
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diff changeset
153 if (!curfile_total_size) {
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diff changeset
154 printf("SIM indicates file of zero length, nothing to do\n");
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155 return(0);
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156 }
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diff changeset
157 fd = open(argv[2], O_RDONLY);
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diff changeset
158 if (fd < 0) {
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diff changeset
159 perror(argv[2]);
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160 return(-1);
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161 }
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162 fstat(fd, &st);
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diff changeset
163 if ((st.st_mode & S_IFMT) != S_IFREG) {
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diff changeset
164 fprintf(stderr, "error: %s is not a regular file\n", argv[2]);
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diff changeset
165 close(fd);
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166 return(-1);
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diff changeset
167 }
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diff changeset
168 if (st.st_size != curfile_total_size) {
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parents: 99
diff changeset
169 fprintf(stderr,
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diff changeset
170 "error: length of %s does not match SIM EF length of %u bytes\n",
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diff changeset
171 argv[2], curfile_total_size);
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diff changeset
172 close(fd);
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diff changeset
173 return(-1);
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diff changeset
174 }
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diff changeset
175 databuf = malloc(curfile_total_size);
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parents: 99
diff changeset
176 if (!databuf) {
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parents: 99
diff changeset
177 perror("malloc for file data");
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diff changeset
178 close(fd);
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diff changeset
179 return(-1);
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diff changeset
180 }
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diff changeset
181 read(fd, databuf, curfile_total_size);
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diff changeset
182 close(fd);
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Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
183 switch (curfile_structure) {
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diff changeset
184 case 0x00:
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diff changeset
185 /* transparent */
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diff changeset
186 rc = restore_transparent(databuf);
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Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
187 break;
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Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
188 case 0x01:
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Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
189 /* record-based */
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Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
190 rc = restore_records(databuf);
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Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
191 break;
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Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
192 case 0x03:
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Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
193 fprintf(stderr, "error: cyclic files are not supported\n");
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Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
194 rc = -1;
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Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
195 }
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Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
196 free(databuf);
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Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
197 return(rc);
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Mychaela Falconia <falcon@freecalypso.org>
parents: 99
diff changeset
198 }