Bell 32V development

[unix-history] / usr / src / libc / stdio / getpw.c

#include        <stdio.h>

getpw(uid, buf)
int uid;
char buf[];
{
       static FILE *pwf;
       register n, c;
       register char *bp;

       if(pwf == 0)
               pwf = fopen("/etc/passwd", "r");
       if(pwf == NULL)
               return(1);
       rewind(pwf);

       for (;;) {
               bp = buf;
               while((c=getc(pwf)) != '\n') {
                       if(c == EOF)
                               return(1);
                       *bp++ = c;
               }
               *bp++ = '\0';
               bp = buf;
               n = 3;
               while(--n)
               while((c = *bp++) != ':')
                       if(c == '\n')
                               return(1);
               while((c = *bp++) != ':') {
                       if(c<'0' || c>'9')
                               continue;
                       n = n*10+c-'0';
               }
               if(n == uid)
                       return(0);
       }
}