]> git.zerfleddert.de Git - proxmark3-svn/blob - client/util.c
Minor bug fixes with help from Holiman.
[proxmark3-svn] / client / util.c
1 //-----------------------------------------------------------------------------
2 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
3 //
4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
5 // at your option, any later version. See the LICENSE.txt file for the text of
6 // the license.
7 //-----------------------------------------------------------------------------
8 // utilities
9 //-----------------------------------------------------------------------------
10
11 #include "util.h"
12
13 #ifndef _WIN32
14 #include <termios.h>
15 #include <sys/ioctl.h>
16
17 int ukbhit(void)
18 {
19 int cnt = 0;
20 int error;
21 static struct termios Otty, Ntty;
22
23
24 tcgetattr( 0, &Otty);
25 Ntty = Otty;
26
27 Ntty.c_iflag = 0; /* input mode */
28 Ntty.c_oflag = 0; /* output mode */
29 Ntty.c_lflag &= ~ICANON; /* raw mode */
30 Ntty.c_cc[VMIN] = CMIN; /* minimum time to wait */
31 Ntty.c_cc[VTIME] = CTIME; /* minimum characters to wait for */
32
33 if (0 == (error = tcsetattr(0, TCSANOW, &Ntty))) {
34 error += ioctl(0, FIONREAD, &cnt);
35 error += tcsetattr(0, TCSANOW, &Otty);
36 }
37
38 return ( error == 0 ? cnt : -1 );
39 }
40
41 #else
42 #include <conio.h>
43 int ukbhit(void) {
44 return kbhit();
45 }
46 #endif
47
48 // log files functions
49 void AddLogLine(char *fileName, char *extData, char *c) {
50 FILE *fLog = NULL;
51
52 fLog = fopen(fileName, "a");
53 if (!fLog) {
54 printf("Could not append log file %s", fileName);
55 return;
56 }
57
58 fprintf(fLog, "%s", extData);
59 fprintf(fLog, "%s\n", c);
60 fclose(fLog);
61 }
62
63 void AddLogHex(char *fileName, char *extData, const uint8_t * data, const size_t len){
64 AddLogLine(fileName, extData, sprint_hex(data, len));
65 }
66
67 void AddLogUint64(char *fileName, char *extData, const uint64_t data) {
68 char buf[100] = {0};
69 sprintf(buf, "%x%x", (unsigned int)((data & 0xFFFFFFFF00000000) >> 32), (unsigned int)(data & 0xFFFFFFFF));
70 AddLogLine(fileName, extData, buf);
71 }
72
73 void AddLogCurrentDT(char *fileName) {
74 char buff[20];
75 struct tm *curTime;
76
77 time_t now = time(0);
78 curTime = gmtime(&now);
79
80 strftime (buff, sizeof(buff), "%Y-%m-%d %H:%M:%S", curTime);
81 AddLogLine(fileName, "\nanticollision: ", buff);
82 }
83
84 void FillFileNameByUID(char *fileName, uint8_t * uid, char *ext, int byteCount) {
85 char * fnameptr = fileName;
86 memset(fileName, 0x00, 200);
87
88 for (int j = 0; j < byteCount; j++, fnameptr += 2)
89 sprintf(fnameptr, "%02x", uid[j]);
90 sprintf(fnameptr, "%s", ext);
91 }
92
93 // printing and converting functions
94
95 void print_hex(const uint8_t * data, const size_t len)
96 {
97 size_t i;
98
99 for (i=0; i < len; i++)
100 printf("%02x ", data[i]);
101
102 printf("\n");
103 }
104
105 char * sprint_hex(const uint8_t * data, const size_t len) {
106
107 int maxLen = ( len > 1024/3) ? 1024/3 : len;
108 static char buf[1024];
109 char * tmp = buf;
110 size_t i;
111
112 for (i=0; i < maxLen; ++i, tmp += 3)
113 sprintf(tmp, "%02x ", data[i]);
114
115 return buf;
116 }
117
118 char * sprint_bin(const uint8_t * data, const size_t len) {
119
120 int maxLen = ( len > 1024) ? 1024 : len;
121 static char buf[1024];
122 char * tmp = buf;
123 size_t i;
124
125 for (i=0; i < maxLen; ++i, ++tmp)
126 sprintf(tmp, "%u", data[i]);
127
128 return buf;
129 }
130
131 void num_to_bytes(uint64_t n, size_t len, uint8_t* dest)
132 {
133 while (len--) {
134 dest[len] = (uint8_t) n;
135 n >>= 8;
136 }
137 }
138
139 uint64_t bytes_to_num(uint8_t* src, size_t len)
140 {
141 uint64_t num = 0;
142 while (len--)
143 {
144 num = (num << 8) | (*src);
145 src++;
146 }
147 return num;
148 }
149
150 //assumes little endian
151 char * printBits(size_t const size, void const * const ptr)
152 {
153 unsigned char *b = (unsigned char*) ptr;
154 unsigned char byte;
155 static char buf[1024];
156 char * tmp = buf;
157 int i, j;
158
159 for (i=size-1;i>=0;i--)
160 {
161 for (j=7;j>=0;j--)
162 {
163 byte = b[i] & (1<<j);
164 byte >>= j;
165 sprintf(tmp, "%u", byte);
166 tmp++;
167 }
168 }
169 return buf;
170 }
171
172 // -------------------------------------------------------------------------
173 // string parameters lib
174 // -------------------------------------------------------------------------
175
176 // -------------------------------------------------------------------------
177 // line - param line
178 // bg, en - symbol numbers in param line of beginning an ending parameter
179 // paramnum - param number (from 0)
180 // -------------------------------------------------------------------------
181 int param_getptr(const char *line, int *bg, int *en, int paramnum)
182 {
183 int i;
184 int len = strlen(line);
185
186 *bg = 0;
187 *en = 0;
188
189 // skip spaces
190 while (line[*bg] ==' ' || line[*bg]=='\t') (*bg)++;
191 if (*bg >= len) {
192 return 1;
193 }
194
195 for (i = 0; i < paramnum; i++) {
196 while (line[*bg]!=' ' && line[*bg]!='\t' && line[*bg] != '\0') (*bg)++;
197 while (line[*bg]==' ' || line[*bg]=='\t') (*bg)++;
198
199 if (line[*bg] == '\0') return 1;
200 }
201
202 *en = *bg;
203 while (line[*en] != ' ' && line[*en] != '\t' && line[*en] != '\0') (*en)++;
204
205 (*en)--;
206
207 return 0;
208 }
209
210 char param_getchar(const char *line, int paramnum)
211 {
212 int bg, en;
213
214 if (param_getptr(line, &bg, &en, paramnum)) return 0x00;
215
216 return line[bg];
217 }
218
219 uint8_t param_get8(const char *line, int paramnum)
220 {
221 return param_get8ex(line, paramnum, 10, 0);
222 }
223
224 uint8_t param_get8ex(const char *line, int paramnum, int deflt, int base)
225 {
226 int bg, en;
227
228 if (!param_getptr(line, &bg, &en, paramnum))
229 return strtoul(&line[bg], NULL, base) & 0xff;
230 else
231 return deflt;
232 }
233
234 uint32_t param_get32ex(const char *line, int paramnum, int deflt, int base)
235 {
236 int bg, en;
237
238 if (!param_getptr(line, &bg, &en, paramnum))
239 return strtoul(&line[bg], NULL, base);
240 else
241 return deflt;
242 }
243
244 uint64_t param_get64ex(const char *line, int paramnum, int deflt, int base)
245 {
246 int bg, en;
247
248 if (!param_getptr(line, &bg, &en, paramnum))
249 return strtoull(&line[bg], NULL, base);
250 else
251 return deflt;
252
253 return 0;
254 }
255
256 int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt)
257 {
258 int bg, en, temp, i;
259
260 if (hexcnt % 2)
261 return 1;
262
263 if (param_getptr(line, &bg, &en, paramnum)) return 1;
264
265 if (en - bg + 1 != hexcnt)
266 return 1;
267
268 for(i = 0; i < hexcnt; i += 2) {
269 if (!(isxdigit(line[bg + i]) && isxdigit(line[bg + i + 1])) ) return 1;
270
271 sscanf((char[]){line[bg + i], line[bg + i + 1], 0}, "%X", &temp);
272 data[i / 2] = temp & 0xff;
273 }
274
275 return 0;
276 }
277
278 int param_getstr(const char *line, int paramnum, char * str)
279 {
280 int bg, en;
281
282 if (param_getptr(line, &bg, &en, paramnum)) return 0;
283
284 memcpy(str, line + bg, en - bg + 1);
285 str[en - bg + 1] = 0;
286
287 return en - bg + 1;
288 }
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