tconvM2A.c - plan9port - [fork] Plan 9 from user space
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       tconvM2A.c (470B)
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            1 #include <u.h>
            2 #include <libc.h>
            3 #include <authsrv.h>
            4 
            5 #define        CHAR(x)                f->x = *p++
            6 #define        SHORT(x)        f->x = (p[0] | (p[1]<<8)); p += 2
            7 #define        VLONG(q)        q = (p[0] | (p[1]<<8) | (p[2]<<16) | (p[3]<<24)); p += 4
            8 #define        LONG(x)                VLONG(f->x)
            9 #define        STRING(x,n)        memmove(f->x, p, n); p += n
           10 
           11 void
           12 convM2A(char *ap, Authenticator *f, char *key)
           13 {
           14         uchar *p;
           15 
           16         if(key)
           17                 decrypt(key, ap, AUTHENTLEN);
           18         p = (uchar*)ap;
           19         CHAR(num);
           20         STRING(chal, CHALLEN);
           21         LONG(id);
           22         USED(p);
           23 }