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qmail-smtpd: Validation of recipient mailbox names.
[qmail]
/
case_starts.c
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#include "case.h"
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int case_starts(s,t)
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register char *s;
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register char *t;
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{
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register unsigned char x;
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register unsigned char y;
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for (;;) {
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x = *s++ - 'A';
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if (x <= 'Z' - 'A') x += 'a'; else x += 'A';
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y = *t++ - 'A';
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if (y <= 'Z' - 'A') y += 'a'; else y += 'A';
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if (!y) return 1;
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if (x != y) return 0;
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}
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}