45 lines
783 B
C
45 lines
783 B
C
#include <u.h>
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#include <lib9.h>
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#include <authsrv.h>
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int
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_asgetresp(int fd, Ticket *t, Authenticator *a, Authkey *k)
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{
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char buf[MAXTICKETLEN+MAXAUTHENTLEN], err[ERRMAX];
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int n, m;
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memset(t, 0, sizeof(Ticket));
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if(a != nil)
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memset(a, 0, sizeof(Authenticator));
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strcpy(err, "AS protocol botch");
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sys_errstr(err, ERRMAX);
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if(_asrdresp(fd, buf, 0) < 0)
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return -1;
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for(n = 0; (m = convM2T(buf, n, t, k)) <= 0; n += m){
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m = -m;
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if(m <= n || m > sizeof(buf))
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return -1;
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m -= n;
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if(readn(fd, buf+n, m) != m)
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return -1;
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}
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if(a != nil){
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for(n = 0; (m = convM2A(buf, n, a, t)) <= 0; n += m){
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m = -m;
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if(m <= n || m > sizeof(buf))
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return -1;
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m -= n;
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if(readn(fd, buf+n, m) != m)
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return -1;
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}
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}
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sys_errstr(err, ERRMAX);
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return 0;
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}
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