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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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