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#include <stdio.h>
#include <pwd.h>
#include <stdlib.h>
static char PASSWD[] = "/etc/passwd";
static FILE *pwf = NULL;
static char line[BUFSIZ+2];
static struct passwd passwd;
void
setpwent(void)
{
if( pwf == NULL )
pwf = fopen( PASSWD, "r" );
else
rewind( pwf );
}
void
endpwent(void)
{
if( pwf != NULL ){
fclose( pwf );
pwf = NULL;
}
}
static char *
pwskip(char *p)
{
while( *p && *p != ':' && *p != '\n' )
++p;
if( *p ) *p++ = 0;
else p[1] = 0;
return(p);
}
struct passwd *
pwdecode(char *p)
{
passwd.pw_name = p;
p = pwskip(p);
p = pwskip(p); /* passwd */
passwd.pw_uid = atoi(p);
p = pwskip(p);
passwd.pw_gid = atoi(p);
p = pwskip(p); /* comment */
p = pwskip(p); /* gecos */
passwd.pw_dir = p;
p = pwskip(p);
passwd.pw_shell = p;
p = pwskip(p);
return(&passwd);
}
struct passwd *
getpwent(void)
{
register char *p;
if (pwf == NULL) {
if( (pwf = fopen( PASSWD, "r" )) == NULL )
return(0);
}
p = fgets(line, BUFSIZ, pwf);
if (p==NULL)
return(0);
return pwdecode (p);
}
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