tscore.c - plan9port - [fork] Plan 9 from user space
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tscore.c (740B)
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1 #include "stdinc.h"
2 #include "dat.h"
3 #include "fns.h"
4
5 u8int zeroscore[VtScoreSize];
6
7 /* Call this function to force linking of score.o for zeroscore on OS X */
8 void needzeroscore(void) { }
9
10 void
11 scoremem(u8int *score, u8int *buf, int n)
12 {
13 DigestState s;
14
15 memset(&s, 0, sizeof s);
16 sha1(buf, n, score, &s);
17 }
18
19 static int
20 hexv(int c)
21 {
22 if(c >= '0' && c <= '9')
23 return c - '0';
24 if(c >= 'a' && c <= 'f')
25 return c - 'a' + 10;
26 if(c >= 'A' && c <= 'F')
27 return c - 'A' + 10;
28 return -1;
29 }
30
31 int
32 strscore(char *s, u8int *score)
33 {
34 int i, c, d;
35
36 for(i = 0; i < VtScoreSize; i++){
37 c = hexv(s[2 * i]);
38 if(c < 0)
39 return -1;
40 d = hexv(s[2 * i + 1]);
41 if(d < 0)
42 return -1;
43 score[i] = (c << 4) + d;
44 }
45 return s[2 * i] == '\0';
46 }