From ecd99f44c4d804b6066da1e3600597cb0193e3ec Mon Sep 17 00:00:00 2001
From: David Nugent <davidn@FreeBSD.org>
Date: Sat, 21 Dec 1996 15:35:45 +0000
Subject: 1)	200 users per group limitation removed and pw 	will handle
 lines of any length in /etc/group. 2)	Fixed bug with usermod -d not updating
 user's home 	directory. 3)	Minor formatting display changes/fixes with
 *show -P.

---
 pw/fileupd.c | 61 +++++++++++++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 48 insertions(+), 13 deletions(-)

(limited to 'pw/fileupd.c')

diff --git a/pw/fileupd.c b/pw/fileupd.c
index 0abaac6..e49e407 100644
--- a/pw/fileupd.c
+++ b/pw/fileupd.c
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: fileupd.c,v 1.1.1.1 1996/12/09 14:05:35 joerg Exp $
+ *	$Id: fileupd.c,v 1.1.1.2 1996/12/10 23:58:55 joerg Exp $
  */
 
 #include <stdio.h>
@@ -38,6 +38,33 @@
 
 #include "pwupd.h"
 
+int
+extendline(char **buf, int * buflen, int needed)
+{
+	if (needed > *buflen) {
+		char	*tmp = realloc(*buf, needed);
+		if (tmp == NULL)
+			return -1;
+		*buf = tmp;
+		*buflen = needed;
+	}
+	return *buflen;
+}
+
+int
+extendarray(char ***buf, int * buflen, int needed)
+{
+	if (needed > *buflen) {
+		char	**tmp = realloc(*buf, needed * sizeof(char *));
+		if (tmp == NULL)
+			return -1;
+		*buf = tmp;
+		*buflen = needed;
+	}
+	return *buflen;
+}
+
+
 int
 fileupdate(char const * filename, mode_t fmode, char const * newline, char const * prefix, int pfxlen, int updmode)
 {
@@ -67,21 +94,28 @@ fileupdate(char const * filename, mode_t fmode, char const * newline, char const
 						close(outfd);
 					else {
 						int             updated = UPD_CREATE;
-						char            line[2048];
+						int		linesize = PWBUFSZ;
+						char           *line = malloc(linesize);
 
-						while (fgets(line, sizeof(line), infp) != NULL) {
+					nextline:
+						while (fgets(line, linesize, infp) != NULL) {
 							char           *p = strchr(line, '\n');
 
-							if (p == NULL) {	/* Line too long */
-								int             ch;
-
-								fputs(line, outfp);
-								while ((ch = fgetc(infp)) != EOF) {
-									fputc(ch, outfp);
-									if (ch == '\n')
-										break;
+							while ((p = strchr(line, '\n')) == NULL) {
+								int	l;
+								if (extendline(&line, &linesize, linesize + PWBUFSZ) == -1) {
+									int	ch;
+									fputs(line, outfp);
+									while ((ch = fgetc(infp)) != EOF) {
+										fputc(ch, outfp);
+										if (ch == '\n')
+											break;
+									}
+									goto nextline;
 								}
-								continue;
+								l = strlen(line);
+								if (fgets(line + l, linesize - l, infp) == NULL)
+									break;
 							}
 							if (*line != '#' && *line != '\n') {
 								if (!updated && strncmp(line, prefix, pfxlen) == 0) {
@@ -127,7 +161,7 @@ fileupdate(char const * filename, mode_t fmode, char const * newline, char const
 								 */
 								rewind(infp);
 								rewind(outfp);
-								while (fgets(line, sizeof(line), outfp) != NULL)
+								while (fgets(line, linesize, outfp) != NULL)
 									fputs(line, infp);
 
 								/*
@@ -141,6 +175,7 @@ fileupdate(char const * filename, mode_t fmode, char const * newline, char const
 									ftruncate(infd, ftell(infp));
 							}
 						}
+						free(line);
 						fclose(outfp);
 					}
 					remove(file);
-- 
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