aboutsummaryrefslogtreecommitdiff
path: root/libpwdgrp/__getgrent.c
diff options
context:
space:
mode:
Diffstat (limited to 'libpwdgrp/__getgrent.c')
-rw-r--r--libpwdgrp/__getgrent.c203
1 files changed, 0 insertions, 203 deletions
diff --git a/libpwdgrp/__getgrent.c b/libpwdgrp/__getgrent.c
deleted file mode 100644
index 3b54b9eec..000000000
--- a/libpwdgrp/__getgrent.c
+++ /dev/null
@@ -1,203 +0,0 @@
-/*
- * __getgrent.c - This file is part of the libc-8086/grp package for ELKS,
- * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "busybox.h"
-#include "grp_.h"
-
-/*
- * Define GR_SCALE_DYNAMIC if you want grp to dynamically scale its read buffer
- * so that lines of any length can be used. On very very small systems,
- * you may want to leave this undefined because it will make the grp functions
- * somewhat larger (because of the inclusion of malloc and the code necessary).
- * On larger systems, you will want to define this, because grp will _not_
- * deal with long lines gracefully (they will be skipped).
- */
-#undef GR_SCALE_DYNAMIC
-
-#ifndef GR_SCALE_DYNAMIC
-/*
- * If scaling is not dynamic, the buffers will be statically allocated, and
- * maximums must be chosen. GR_MAX_LINE_LEN is the maximum number of
- * characters per line in the group file. GR_MAX_MEMBERS is the maximum
- * number of members of any given group.
- */
-#define GR_MAX_LINE_LEN 128
-/* GR_MAX_MEMBERS = (GR_MAX_LINE_LEN-(24+3+6))/9 */
-#define GR_MAX_MEMBERS 11
-
-#endif /* !GR_SCALE_DYNAMIC */
-
-
-/*
- * Define GR_DYNAMIC_GROUP_LIST to make initgroups() dynamically allocate
- * space for it's GID array before calling setgroups(). This is probably
- * unnecessary scalage, so it's undefined by default.
- */
-#undef GR_DYNAMIC_GROUP_LIST
-
-#ifndef GR_DYNAMIC_GROUP_LIST
-/*
- * GR_MAX_GROUPS is the size of the static array initgroups() uses for
- * its static GID array if GR_DYNAMIC_GROUP_LIST isn't defined.
- */
-#define GR_MAX_GROUPS 64
-
-#endif /* !GR_DYNAMIC_GROUP_LIST */
-
-
-/*
- * This is the core group-file read function. It behaves exactly like
- * getgrent() except that it is passed a file descriptor. getgrent()
- * is just a wrapper for this function.
- */
-struct group *bb_getgrent(int grp_fd)
-{
-#ifndef GR_SCALE_DYNAMIC
- static char line_buff[GR_MAX_LINE_LEN];
- static char *members[GR_MAX_MEMBERS];
-#else
- static char *line_buff = NULL;
- static char **members = NULL;
- short line_index;
- short buff_size;
-#endif
- static struct group group;
- register char *ptr;
- char *field_begin;
- short member_num;
- char *endptr;
- int line_len;
-
-
- /* We use the restart label to handle malformatted lines */
- restart:
-#ifdef GR_SCALE_DYNAMIC
- line_index = 0;
- buff_size = 256;
-#endif
-
-#ifndef GR_SCALE_DYNAMIC
- /* Read the line into the static buffer */
- if ((line_len = read(grp_fd, line_buff, GR_MAX_LINE_LEN)) <= 0)
- return NULL;
- field_begin = strchr(line_buff, '\n');
- if (field_begin != NULL)
- lseek(grp_fd, (long) (1 + field_begin - (line_buff + line_len)),
- SEEK_CUR);
- else { /* The line is too long - skip it :-\ */
-
- do {
- if ((line_len = read(grp_fd, line_buff, GR_MAX_LINE_LEN)) <= 0)
- return NULL;
- } while (!(field_begin = strchr(line_buff, '\n')));
- lseek(grp_fd, (long) ((field_begin - line_buff) - line_len + 1),
- SEEK_CUR);
- goto restart;
- }
- if (*line_buff == '#' || *line_buff == ' ' || *line_buff == '\n' ||
- *line_buff == '\t')
- goto restart;
- *field_begin = '\0';
-
-#else /* !GR_SCALE_DYNAMIC */
- line_buff = realloc(line_buff, buff_size);
- while (1) {
- if ((line_len = read(grp_fd, line_buff + line_index,
- buff_size - line_index)) <= 0)
- return NULL;
- field_begin = strchr(line_buff, '\n');
- if (field_begin != NULL) {
- lseek(grp_fd,
- (long) (1 + field_begin -
- (line_len + line_index + line_buff)), SEEK_CUR);
- *field_begin = '\0';
- if (*line_buff == '#' || *line_buff == ' '
- || *line_buff == '\n' || *line_buff == '\t')
- goto restart;
- break;
- } else { /* Allocate some more space */
-
- line_index = buff_size;
- buff_size += 256;
- line_buff = realloc(line_buff, buff_size);
- }
- }
-#endif /* GR_SCALE_DYNAMIC */
-
- /* Now parse the line */
- group.gr_name = line_buff;
- ptr = strchr(line_buff, ':');
- if (ptr == NULL)
- goto restart;
- *ptr++ = '\0';
-
- group.gr_passwd = ptr;
- ptr = strchr(ptr, ':');
- if (ptr == NULL)
- goto restart;
- *ptr++ = '\0';
-
- field_begin = ptr;
- ptr = strchr(ptr, ':');
- if (ptr == NULL)
- goto restart;
- *ptr++ = '\0';
-
- group.gr_gid = (gid_t) strtoul(field_begin, &endptr, 10);
- if (*endptr != '\0')
- goto restart;
-
- member_num = 0;
- field_begin = ptr;
-
-#ifndef GR_SCALE_DYNAMIC
- while ((ptr = strchr(ptr, ',')) != NULL) {
- *ptr = '\0';
- ptr++;
- members[member_num] = field_begin;
- field_begin = ptr;
- member_num++;
- }
- if (*field_begin == '\0')
- members[member_num] = NULL;
- else {
- members[member_num] = field_begin;
- members[member_num + 1] = NULL;
- }
-#else /* !GR_SCALE_DYNAMIC */
- free(members);
- members = (char **) malloc((member_num + 1) * sizeof(char *));
- for ( ; field_begin && *field_begin != '\0'; field_begin = ptr) {
- if ((ptr = strchr(field_begin, ',')) != NULL)
- *ptr++ = '\0';
- members[member_num++] = field_begin;
- members = (char **) realloc(members,
- (member_num + 1) * sizeof(char *));
- }
- members[member_num] = NULL;
-#endif /* GR_SCALE_DYNAMIC */
-
- group.gr_mem = members;
- return &group;
-}