39 lines
638 B
C
39 lines
638 B
C
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/*
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* getpw - get a password from the password file
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*/
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/* $Header$ */
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#include <stdio.h>
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getpw(int uid, char buf[])
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{
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register FILE *pwf;
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register int ch, i;
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register char *bp;
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pwf = fopen("/etc/passwd", "r");
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if (pwf == NULL) return(1);
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for (;;) {
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bp = buf;
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while ((ch = getc(pwf)) != '\n') {
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if (ch == EOF) return 1;
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*bp++ = ch;
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}
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*bp++ = '\0';
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bp = buf;
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for (i = 2; i; i--) {
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while ((ch = *bp++) != ':') {
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if(ch = '\0') return 1;
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}
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}
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i = 0;
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while ((ch = *bp++) != ':') {
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if (ch < '0' || ch > '9') return 1;
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i = i * 10 + (ch - '0');
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}
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if (i == uid) return(0);
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}
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/*NOTREACHED*/
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}
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