Fix compilation and warnings in ntfsdecrypt.c on OSX/gcc4.0.1. The

compilation failure was because we use strnlen() which is gnu
specific and not present on my current version of OSX so ntfsdecrypt
now provides own version if it is not present on system.  (Anton)

ChangeLog

@@ -6,7 +6,7 @@ xx/xx/2005 - 1.12.2-WIP
 	- Rewrite gcc version detection logic using the -dumpversion option.
 	  Tested on various OS and architectures and gcc versions from 2.95 to
 	  4.0.1 with some weird ones like 3.5-blah thrown in, too.  (Anton)
-	- Fix bogus le16_to_cpu() which shouldbe le32_to_cpu() when accessing
+	- Fix bogus le16_to_cpu() which should be le32_to_cpu() when accessing
 	  the attribute list entry attribute type in some places in
 	  libntfs/attrib.c.  (Anton)
 	- Fix silly bug introduced in 1.12.0 which breaks ntfsfix (and others
@@ -19,6 +19,10 @@ xx/xx/2005 - 1.12.2-WIP
 	  distribution otherwise make test fails on released sources.  Solution
 	  is not perfect as it also adds the test/runlist-data/CVS directory
 	  but it will do at least for me.  (Anton)
+	- Fix compilation and warnings in ntfsdecrypt.c on OSX/gcc4.0.1.  The
+	  compilation failure was because we use strnlen() which is gnu
+	  specific and not present on my current version of OSX so ntfsdecrypt
+	  now provides own version if it is not present on system.  (Anton)
 
 10/10/2005 - 1.12.1 - Minor fix to location of mount.ntfs-fuse and mkfs.ntfs.
 

configure.ac

@@ -317,9 +317,9 @@ AC_FUNC_STAT
 AC_FUNC_STRFTIME
 AC_FUNC_UTIME_NULL
 AC_FUNC_VPRINTF
-AC_CHECK_FUNCS([atexit fdatasync getopt_long hasmntopt mbsinit memmove memset \
-	realpath regcomp setlocale setxattr strcasecmp strchr strdup strerror \
-	strtol strtoul utime])
+AC_CHECK_FUNCS([atexit dup2 fdatasync getopt_long hasmntopt mbsinit memmove \
+	memset realpath regcomp setlocale setxattr strcasecmp strchr strdup \
+	strerror strnlen strtol strtoul utime])
 
 # Makefiles to be created by configure.
 AC_CONFIG_FILES([

ntfsprogs/ntfsdecrypt.c

@@ -368,7 +368,8 @@ static void ntfs_crypto_deinit(void)
 static ntfs_rsa_private_key ntfs_rsa_private_key_import_from_gnutls(
 		gnutls_x509_privkey_t priv_key)
 {
-	int i, j, tmp_size;
+	int i, j;
+	size_t tmp_size;
 	gnutls_datum_t rd[6];
 	gcry_mpi_t rm[6];
 	gcry_sexp_t rsa_key;
@@ -577,6 +578,21 @@ static inline void ntfs_buffer_reverse(u8 *buf, unsigned buf_size)
 	}
 }
 
+#ifndef HAVE_STRNLEN
+/**             
+ *  * strnlen - strnlen is a gnu extension so emulate it if not present
+ *   */     
+static size_t strnlen(const char *s, size_t maxlen)
+{       
+	const char *p, *end;
+
+	/* Look for a '\0' character. */
+	for (p = s, end = s + maxlen; p < end && *p; p++)
+		;
+	return p - s;
+}
+#endif /* ! HAVE_STRNLEN */
+
 /**
  * ntfs_raw_fek_decrypt -
  *
@@ -648,7 +664,7 @@ static unsigned ntfs_raw_fek_decrypt(u8 *fek, u32 fek_size,
 	 * Finally, remove the PKCS#1 padding and return the size of the
 	 * decrypted FEK.
 	 */
-	padding = strnlen(fek, size) + 1;
+	padding = strnlen((char *)fek, size) + 1;
 	if (padding > size) {
 		fprintf(stderr, "Failed to remove PKCS#1 padding from "
 				"decrypted file encryption key.\n");
@@ -669,8 +685,8 @@ static unsigned ntfs_raw_fek_decrypt(u8 *fek, u32 fek_size,
 static gcry_error_t ntfs_desx_key_expand(const u8 *src, u32 *des_key,
 		u64 *out_whitening, u64 *in_whitening)
 {
-	static const u8 *salt1 = "Dan Simon  ";
-	static const u8 *salt2 = "Scott Field";
+	static const u8 *salt1 = (const u8*)"Dan Simon  ";
+	static const u8 *salt2 = (const u8*)"Scott Field";
 	static const int salt_len = 12;
 	gcry_md_hd_t hd1, hd2;
 	u32 *md;
@@ -1107,7 +1123,7 @@ static int ntfs_fek_decrypt_sector(ntfs_fek *fek, u8 *data, const u64 offset)
 static int ntfs_cat_decrypt(ntfs_inode *inode, ntfs_fek *fek)
 {
 	int bufsize = 512;
-	char *buffer;
+	unsigned char *buffer;
 	ntfs_attr *attr;
 	s64 bytes_read, written, offset, total;
 	s64 old_data_size, old_initialized_size;
@@ -1176,12 +1192,14 @@ static int ntfs_cat_decrypt(ntfs_inode *inode, ntfs_fek *fek)
  */
 int main(int argc, char *argv[])
 {
-	u8 *pfx_buf, *password;
+	u8 *pfx_buf;
+	char *password;
 	ntfs_rsa_private_key rsa_key;
 	ntfs_volume *vol;
 	ntfs_inode *inode;
 	ntfs_fek *fek;
-	int pfx_size, res;
+	unsigned pfx_size;
+	int res;
 
 	if (!parse_options(argc, argv))
 		return 1;