- info patch: fixed ogonkify.texi (one tab too much)

[packages/a2ps.git] / a2ps-security.patch

diff -ur a2ps-4.13.orig/lib/routines.c a2ps-4.13/lib/routines.c\r
--- a2ps-4.13.orig/lib/routines.c	Sat Oct 16 06:46:37 1999\r
+++ a2ps-4.13/lib/routines.c	Fri Jan  5 12:51:20 2001\r
@@ -242,3 +242,50 @@\r
   /* Don't complain if you can't unlink.  Who cares of a tmp file? */\r
   unlink (filename);\r
 }\r
+\r
+/*\r
+ * Securely generate a temp file, and make sure it gets\r
+ * deleted upon exit.\r
+ */\r
+static char **	tempfiles;\r
+static unsigned	ntempfiles;\r
+\r
+static void\r
+cleanup_tempfiles()\r
+{\r
+	while (ntempfiles--)\r
+		unlink(tempfiles[ntempfiles]);\r
+}\r
+\r
+char *\r
+safe_tempnam(const char *pfx)\r
+{\r
+	char	*dirname, *filename;\r
+	int	fd;\r
+\r
+	if (!(dirname = getenv("TMPDIR")))\r
+		dirname = "/tmp";\r
+\r
+	tempfiles = (char **) realloc(tempfiles,\r
+			(ntempfiles+1) * sizeof(char *));\r
+	if (tempfiles == NULL)\r
+		return NULL;\r
+\r
+	filename = malloc(strlen(dirname) + strlen(pfx) + sizeof("/XXXXXX"));\r
+	if (!filename)\r
+		return NULL;\r
+\r
+	sprintf(filename, "%s/%sXXXXXX", dirname, filename);\r
+\r
+	if ((fd = mkstemp(filename)) < 0) {\r
+		free(filename);\r
+		return NULL;\r
+	}\r
+	close(fd);\r
+\r
+	if (ntempfiles == 0)\r
+		atexit(cleanup_tempfiles);\r
+	tempfiles[ntempfiles++] = filename;\r
+\r
+	return filename;\r
+}\r
diff -ur a2ps-4.13.orig/lib/routines.h a2ps-4.13/lib/routines.h\r
--- a2ps-4.13.orig/lib/routines.h	Mon Oct 18 22:24:41 1999\r
+++ a2ps-4.13/lib/routines.h	Fri Jan  5 12:37:53 2001\r
@@ -255,7 +255,8 @@\r
 /* If _STR_ is not defined, give it a tempname in _TMPDIR_ */\r
 #define tempname_ensure(Str)				\\r
 do {							\\r
-  (Str) = (Str) ? (Str) : tempnam (NULL, "a2_");	\\r
+  (Str) = (Str) ? (Str) : safe_tempnam("a2_");	\\r
 } while (0)\r
+char * safe_tempnam(const char *);\r
 \r
 #endif\r