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