File: iso7816.c

package info (click to toggle)
cardpeek 0.8.3-1
  • links: PTS
  • area: main
  • in suites: jessie, jessie-kfreebsd
  • size: 3,184 kB
  • ctags: 1,275
  • sloc: ansic: 10,467; sh: 4,241; makefile: 32; xml: 19
file content (349 lines) | stat: -rw-r--r-- 11,098 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
/********************************************************************** 
*
* This file is part of Cardpeek, the smart card reader utility.
*
* Copyright 2009-2013 by Alain Pannetrat <L1L1@gmx.com>
*
* Cardpeek is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Cardpeek is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Cardpeek.  If not, see <http://www.gnu.org/licenses/>.
*
*/

#include "iso7816.h"
#include <string.h>

int iso7816_describe_apdu(apdu_descriptor_t *ad, const bytestring_t* apdu)
{
  unsigned apdu_len = bytestring_get_size(apdu);
  unsigned char c;

  memset(ad,0,sizeof(*ad));

  if (apdu_len<4)
    return ISO7816_ERROR;

  if (apdu_len==4) /* CASE 1 */
  {
    ad->apdu_class = APDU_CLASS_1;
    return ISO7816_OK;
  }
  
  bytestring_get_element(&c,apdu,4);

  if (apdu_len==5) /* CASE 2S */
  {
    ad->apdu_class = APDU_CLASS_2S;
    ad->le_len = 1;
    ad->le     = c;
    return ISO7816_OK;
  }

  if (c>0) /* apdu_len>5 */
  {
    ad->lc_len= 1;
    ad->lc    = c;

    if ((5+ad->lc)==apdu_len) /* CASE 3S */
    {
      ad->apdu_class = APDU_CLASS_3S;
      return ISO7816_OK;
    }
    bytestring_get_element(&c,apdu,ad->lc+5);
    if ((ad->lc+6)==apdu_len) /* CASE 4S */
    {
      ad->apdu_class = APDU_CLASS_4S;
      ad->le_len = 1;
      ad->le     = c;
      return ISO7816_OK;
    }
  }
  else /* c==0 */
  {
    if (apdu_len<7)
      return ISO7816_ERROR;
    if (apdu_len==7) /* CASE 2E */
    {
      ad->apdu_class = APDU_CLASS_2E;
      ad->le_len=3;
      bytestring_get_element(&c,apdu,5);
      ad->le = c;
      bytestring_get_element(&c,apdu,6);
      ad->le = ((ad->le)<<8)|c;
      return ISO7816_OK;
    }
   
    ad->lc_len=3;
    bytestring_get_element(&c,apdu,5);
    ad->lc = c;
    bytestring_get_element(&c,apdu,6);
    ad->lc = ((ad->lc)<<8)|c;
    if (apdu_len==ad->lc+7) /* case 3E */
    {
      ad->apdu_class = APDU_CLASS_3E;
      return ISO7816_OK;
    }
    if (apdu_len==ad->lc+10) /* case 4E */
    {
      bytestring_get_element(&c,apdu,ad->lc+7);
      if (c!=0)
	return ISO7816_ERROR;
      ad->apdu_class = APDU_CLASS_4E;
      ad->le_len = 3;
      bytestring_get_element(&c,apdu,ad->lc+8);
      ad->le = c;
      bytestring_get_element(&c,apdu,ad->lc+9);
      ad->le = ((ad->le)<<8)|c;
      return ISO7816_OK; 
    }
  }
  return ISO7816_ERROR;
}

#define is_hex(c) (((c)>='0' && (c)<='9') || \
		   ((c)>='A' && (c)<='F') || \
		   ((c)>='a' && (c)<='f'))

static int is_hex4(const char* s)
{
  if (strlen(s)<4)
    return 0;
  return (is_hex(s[0]) && is_hex(s[1]) && is_hex(s[2]) && is_hex(s[3]));
}

int iso7816_make_file_path(bytestring_t* file_path, 
			   int *path_type, 
	   		   const char* path)
{ 
  unsigned path_len = strlen(path);

  *path_type=-1;
  bytestring_clear(file_path);

  if (path[0]=='.')
  {
    if (path[1]=='.' && path_len==2)
    {
      *path_type=3;
      return ISO7816_OK;
    }
    else if (path[1]=='/')
    {
      *path_type=9; /* 9 => SELECT FROM CURRENT DF */
      bytestring_assign_digit_string(file_path,path+2);
      return ISO7816_OK;
    }
    else if (is_hex4(path+1))
    {
      if (path[5]=='/' && path_len==6) 
      {
	*path_type=1;
	bytestring_assign_digit_string(file_path,path+1);
	return ISO7816_OK;
      }
      else if (path_len==5)
      {
	*path_type=2;
	bytestring_assign_digit_string(file_path,path+1);
        return ISO7816_OK;
      }
    }
  }
  else if (path[0]=='#')
  {
    if (path_len==5)
    {
      *path_type=0;
      bytestring_assign_digit_string(file_path,path+1);
      return ISO7816_OK;
    }
    else if (path_len==1)
    {
      *path_type=0;
      return ISO7816_OK;
    }
    else
    {
      *path_type=4;
      bytestring_assign_digit_string(file_path,path+1);
      return ISO7816_OK;
    }
  }
  else if (path[0]=='/' && is_hex4(path+1)) 
  {
    *path_type=8; /* 8 => SELECT FROM MF */
    bytestring_assign_digit_string(file_path,path+1);
    return ISO7816_OK;
  }
  return ISO7816_ERROR;
}

const char* iso7816_stringify_sw(unsigned short sw)
{
    static char msg[200];

    msg[0]=0;

    if (sw==0x9000)
        return strcpy(msg,"Normal processing");

    switch (sw>>8) {
        case 0x61: 
            strcpy(msg,"More bytes available (see SW2)");
            break;
        case 0x62: 
            strcpy(msg,"State of non-volatile memory unchanged - ");
            switch (sw&0xFF) {
                case 0x00: strcat(msg,"No information given"); break;
                case 0x81: strcat(msg,"Part of returned data may be corrupted"); break;
                case 0x82: strcat(msg,"End of file/record reached before reading Le bytes"); break;
                case 0x83: strcat(msg,"Selected file invalidated"); break;
                case 0x84: strcat(msg,"FCI not formatted correctly"); break;
            }
            break;
        case 0x63:
            strcpy(msg,"State of non-volatile memory changed - ");
            switch (sw&0xFF) {
                case 0x00: strcat(msg,"No information given"); break;
                case 0x81: strcat(msg,"File filled up by the last write"); break;
            }
            if ((sw&0xF0)==0xC0) strcat(msg,"Counter value");
            break;
        case 0x64:
            strcpy(msg,"State of non-volatile memory unchanged - ");
            if ((sw&0xFF)==0) strcat(msg,"OK");
            break;
        case 0x65:
            strcpy(msg,"State of non-volatile memory changed - ");
            switch (sw&0xFF) {
                case 0x00: strcat(msg,"No information given"); break;
                case 0x81: strcat(msg,"Memory failure"); break;
            }
            break;
        case 0x66:
            strcpy(msg,"security-related issue - ");
            switch (sw&0xFF) {
                case 0x00: strcat(msg,"No information given"); break;
            }
            break;
        case 0x67:
            if (sw==0x6700) 
                strcpy(msg,"Wrong length");
            else
                strcpy(msg,"Unknown 67XX error code");
            break;
        case 0x68:
            strcpy(msg,"Functions in CLA not supported - ");
            switch (sw&0xFF) {
                case 0x00: strcat(msg,"No information given"); break;
                case 0x81: strcat(msg,"Logical channel not supported"); break;
                case 0x82: strcat(msg,"Secure messaging not supported"); break;
            }
            break;
        case 0x69:
            strcpy(msg,"Command not allowed - ");
            switch (sw&0xFF) {
                case 0x00: strcat(msg,"No information given"); break;
                case 0x81: strcat(msg,"Command incompatible with file structure"); break;
                case 0x82: strcat(msg,"Security status not satisfied"); break;
                case 0x83: strcat(msg,"Authentication method blocked"); break;
                case 0x84: strcat(msg,"Referenced data invalidated"); break;
                case 0x85: strcat(msg,"Conditions of use not satisfied"); break;
                case 0x86: strcat(msg,"Command not allowed (no current EF)"); break;
                case 0x87: strcat(msg,"Expected SM data objects missing"); break;
                case 0x88: strcat(msg,"SM data objects incorrect"); break;
            }
            break;
        case 0x6A:
            strcpy(msg,"Wrong parameter(s) P1-P2 - ");
            switch (sw&0xFF) {
                case 0x00: strcat(msg,"No information given"); break;
                case 0x80: strcat(msg,"Incorrect parameters in the data field"); break;
                case 0x81: strcat(msg,"Function not supported"); break;
                case 0x82: strcat(msg,"File not found"); break;
                case 0x83: strcat(msg,"Record not found"); break;
                case 0x84: strcat(msg,"Not enough memory space in the file"); break;
                case 0x85: strcat(msg,"Lc inconsistent with TLV structure"); break;
                case 0x86: strcat(msg,"Incorrect parameters P1-P2"); break;
                case 0x87: strcat(msg,"Lc inconsistent with P1-P2"); break;
                case 0x88: strcat(msg,"Referenced data not found"); break;
            }
            break;
        case 0x6B:
            if (sw==0x6B00)
                strcpy(msg,"Wrong parameter(s) P1-P2");
            else
                strcpy(msg,"Unknown 6BXX error code");
            break;
        case 0x6C:
            strcpy(msg,"Wrong length Le, see SW2");
            break;
        case 0x6D:
            if (sw==0x6D00)
                strcpy(msg,"Instruction code not supported or invalid");
            else
                strcpy(msg,"Unknown 6DXX error code");
            break;
        case 0x6E:
            if (sw==0x6E00)
                strcpy(msg,"Class not supported");
            else
                strcpy(msg,"Unknown 6EXX error code");
            break;
        case 0x6F:
            if (sw==0x6FFF)
                strcpy(msg,"Cardpeek application-level error");
            else
                strcpy(msg,"No precise diagnosis");
            break;
        case 0x92:
            strcpy(msg,"GSM - Update successful after n reties (see SW2)");
            break;
        case 0x94:
            switch (sw&0xFF) {
                case 0x00: strcpy(msg,"GSM - No EF selected"); break;
                case 0x02: strcpy(msg,"GSM - Out of range (invalid address)"); break;
                case 0x04: strcpy(msg,"GSM - File ID or pattern not found"); break;
                case 0x08: strcpy(msg,"GSM - File inconsistent with the command"); break;
            }
            break;
        case 0x98:
            switch (sw&0xFF) {
                case 0x02: strcpy(msg,"GSM - No CHV initilaized"); break;
                case 0x04: strcpy(msg,"GSM - Authentication failed"); break;
                case 0x08: strcpy(msg,"GSM - In contradiction with CHV status"); break;
                case 0x10: strcpy(msg,"GSM - In contradiction invalidation status"); break;
                case 0x40: strcpy(msg,"GSM - Authentication failed, no attempts left"); break;
                case 0x50: strcpy(msg,"GSM - Increase failed, max. vaule reached"); break;
            }
            break;
        case 0x9F:
            strcpy(msg,"GSM - Length of response in SW2"); 
            break;

        default:
            if ((sw>>12)==0x9)
                strcpy(msg,"Application specific Status Word");
            else
                strcpy(msg,"Unknown Status Word");
    }
    return msg;
}

const char *APDU_CLASS_NAMES[]={"None","1","2S","3S","4S","2E","3E","4E"};

const char *iso7816_stringify_apdu_class(unsigned apdu_class)
{
  if (apdu_class>7)
    apdu_class=0;
  return APDU_CLASS_NAMES[apdu_class];
}