From 48b3355c7a887530a9bd17a1ad571e402102dd95 Mon Sep 17 00:00:00 2001
From: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Date: Fri, 9 Feb 2024 15:24:38 +0100
Subject: Remove check for OS specific stuff from is_filename_sane

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
---
 lib/common/hardlink.c    |  2 +-
 lib/util/filename_sane.c | 56 +-----------------------------------------------
 2 files changed, 2 insertions(+), 56 deletions(-)

(limited to 'lib')

diff --git a/lib/common/hardlink.c b/lib/common/hardlink.c
index e43df33..41e068f 100644
--- a/lib/common/hardlink.c
+++ b/lib/common/hardlink.c
@@ -31,7 +31,7 @@ static int map_nodes(rbtree_t *inumtree, sqfs_hard_link_t **out,
 		return 0;
 	}
 
-	if (!is_filename_sane((const char *)n->name, false))
+	if (!is_filename_sane((const char *)n->name))
 		return SQFS_ERROR_CORRUPTED;
 
 	idx = n->inode->base.inode_number;
diff --git a/lib/util/filename_sane.c b/lib/util/filename_sane.c
index b52ce4d..f98aafc 100644
--- a/lib/util/filename_sane.c
+++ b/lib/util/filename_sane.c
@@ -9,68 +9,14 @@
 
 #include <string.h>
 
-#if defined(_WIN32) || defined(__WINDOWS__) || defined(TEST_WIN32)
-#ifdef _MSC_VER
-#define strncasecmp _strnicmp
-#define strcasecmp _stricmp
-#endif
-
-static const char *bad_names[] = {
-	"CON", "PRN", "AUX", "NUL",
-	"COM1", "COM2", "COM3", "COM4", "COM5", "COM6", "COM7", "COM8", "COM9",
-	"LPT1", "LPT2", "LPT3", "LPT4", "LPT5", "LPT6", "LPT7", "LPT8", "LPT9",
-};
-
-static bool is_allowed_by_os(const char *name)
-{
-	size_t len, i;
-
-	for (i = 0; i < sizeof(bad_names) / sizeof(bad_names[0]); ++i) {
-		len = strlen(bad_names[i]);
-
-		if (strncasecmp(name, bad_names[i], len) != 0)
-			continue;
-
-		if (name[len] == '\0')
-			return false;
-
-		if (name[len] == '.' && strchr(name + len + 1, '.') == NULL)
-			return false;
-	}
-
-	return true;
-}
-#else
-static bool is_allowed_by_os(const char *name)
-{
-	(void)name;
-	return true;
-}
-#endif
-
-bool is_filename_sane(const char *name, bool check_os_specific)
+bool is_filename_sane(const char *name)
 {
 	if (strcmp(name, ".") == 0 || strcmp(name, "..") == 0)
 		return false;
 
-	if (check_os_specific && !is_allowed_by_os(name))
-		return false;
-
 	while (*name != '\0') {
 		if (*name == '/')
 			return false;
-
-#if defined(_WIN32) || defined(__WINDOWS__) || defined(TEST_WIN32)
-		if (check_os_specific) {
-			if (*name == '<' || *name == '>' || *name == ':')
-				return false;
-			if (*name == '"' || *name == '|' || *name == '?')
-				return false;
-			if (*name == '*' || *name == '\\' || *name <= 31)
-				return false;
-		}
-#endif
-
 		++name;
 	}
 
-- 
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