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#include <u.h>
#include <libc.h>
#include <authsrv.h>
extern int form1M2B(char *ap, int n, uchar key[32]);
int
convM2PR(char *ap, int n, Passwordreq *f, Ticket *t)
{
uchar *p, buf[MAXPASSREQLEN];
int m;
memset(f, 0, sizeof(Passwordreq));
if(t->form == 0){
m = 1+2*PASSWDLEN+1+SECRETLEN;
if(n < m)
return -m;
memmove(buf, ap, m);
decrypt(t->key, buf, m);
} else {
m = 12+2*PASSWDLEN+1+SECRETLEN+16;
if(n < m)
return -m;
memmove(buf, ap, m);
if(form1M2B((char*)buf, m, t->key) < 0)
return m;
}
p = buf;
f->num = *p++;
memmove(f->old, p, PASSWDLEN), p += PASSWDLEN;
memmove(f->new, p, PASSWDLEN), p += PASSWDLEN;
f->changesecret = *p++;
memmove(f->secret, p, SECRETLEN);
f->old[PASSWDLEN-1] = 0;
f->new[PASSWDLEN-1] = 0;
f->secret[SECRETLEN-1] = 0;
return m;
}
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