imported original firmware WRT54GL_v4.30.11_11_US

1 files changed, 203 insertions, 0 deletions

diff --git a/release/src/router/busybox/libpwdgrp/__getgrent.c b/release/src/router/busybox/libpwdgrp/__getgrent.c
new file mode 100644
index 00000000..39230104
--- /dev/null
+++ b/release/src/router/busybox/libpwdgrp/__getgrent.c
@@ -0,0 +1,203 @@
+/*
+ * __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 becasue 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 *__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;
+}