1/* 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 22 unchanged lines hidden (view full) --- 31 * SUCH DAMAGE. 32 */ 33 34#ifndef lint 35#if 0 36static const char sccsid[] = "@(#)getgrent.c 8.2 (Berkeley) 3/21/94"; 37#endif 38static const char rcsid[] = |
39 "$FreeBSD: head/libexec/mknetid/parse_group.c 90779 2002-02-17 19:09:20Z imp $"; |
40#endif /* not lint */ 41 42/* 43 * This is a slightly modified chunk of getgrent(3). All the YP support 44 * and unneeded functions have been stripped out. 45 */ 46 47#include <sys/types.h> 48#include <grp.h> 49#include <stdio.h> 50#include <stdlib.h> 51#include <string.h> 52 53FILE *_gr_fp; 54static struct group _gr_group; 55static int _gr_stayopen; |
56static int grscan(int, int); 57static int start_gr(void); |
58 59#define MAXGRP 200 60static char *members[MAXGRP]; 61#define MAXLINELENGTH 1024 62static char line[MAXLINELENGTH]; 63 64struct group * |
65_getgrent(void) |
66{ 67 if (!_gr_fp && !start_gr()) { 68 return NULL; 69 } 70 71 |
72 if (!grscan(0, 0)) |
73 return(NULL); 74 return(&_gr_group); 75} 76 77static int |
78start_gr(void) |
79{ 80 return 1; 81} 82 83int |
84_setgroupent(int stayopen) |
85{ 86 if (!start_gr()) 87 return(0); 88 _gr_stayopen = stayopen; 89 return(1); 90} 91 92int |
93_setgrent(void) |
94{ 95 return(_setgroupent(0)); 96} 97 98void |
99_endgrent(void) |
100{ 101 if (_gr_fp) { 102 (void)fclose(_gr_fp); 103 _gr_fp = NULL; 104 } 105} 106 107static int |
108grscan(int search, int gid) |
109{ |
110 char *cp, **m; |
111 char *bp; 112 for (;;) { 113 if (!fgets(line, sizeof(line), _gr_fp)) 114 return(0); 115 bp = line; 116 /* skip lines that are too big */ 117 if (!index(line, '\n')) { 118 int ch; 119 120 while ((ch = getc(_gr_fp)) != '\n' && ch != EOF) 121 ; 122 continue; 123 } 124 if ((_gr_group.gr_name = strsep(&bp, ":\n")) == NULL) 125 break; 126 if (_gr_group.gr_name[0] == '+') 127 continue; |
128 if ((_gr_group.gr_passwd = strsep(&bp, ":\n")) == NULL) 129 break;; 130 if (!(cp = strsep(&bp, ":\n"))) 131 continue; 132 _gr_group.gr_gid = atoi(cp); |
133 if (search && _gr_group.gr_gid != gid) |
134 continue; 135 cp = NULL; 136 if (bp == NULL) /* !! Must check for this! */ 137 break; 138 for (m = _gr_group.gr_mem = members;; bp++) { 139 if (m == &members[MAXGRP - 1]) 140 break; 141 if (*bp == ',') { --- 20 unchanged lines hidden --- |