a

libauthsrv/convA2M.c

@@ -0,0 +1,25 @@
+#include <u.h>
+#include <libc.h>
+#include <authsrv.h>
+
+#define	CHAR(x)		*p++ = f->x
+#define	SHORT(x)	p[0] = f->x; p[1] = f->x>>8; p += 2
+#define	VLONG(q)	p[0] = (q); p[1] = (q)>>8; p[2] = (q)>>16; p[3] = (q)>>24; p += 4
+#define	LONG(x)		VLONG(f->x)
+#define	STRING(x,n)	memmove(p, f->x, n); p += n
+
+int
+convA2M(Authenticator *f, char *ap, char *key)
+{
+	int n;
+	uchar *p;
+
+	p = (uchar*)ap;
+	CHAR(num);
+	STRING(chal, CHALLEN);
+	LONG(id);
+	n = p - (uchar*)ap;
+	if(key)
+		encrypt(key, ap, n);
+	return n;
+}