From 83f076d3a81e5a625c07fdaf82a5e598a1c75c71 Mon Sep 17 00:00:00 2001
From: Dan McGee <dan@archlinux.org>
Date: Sun, 14 Aug 2011 20:39:43 -0500
Subject: [PATCH] Update base64 PolarSSL code

Also adjust our code using it for the size_t adjustments made by
upstream.

Signed-off-by: Dan McGee <dan@archlinux.org>
---
 lib/libalpm/base64.c  | 12 ++++++------
 lib/libalpm/base64.h  | 14 ++++++++------
 lib/libalpm/signing.c | 11 ++++++-----
 3 files changed, 20 insertions(+), 17 deletions(-)

diff --git a/lib/libalpm/base64.c b/lib/libalpm/base64.c
index fa8bec5c..5c9fa814 100644
--- a/lib/libalpm/base64.c
+++ b/lib/libalpm/base64.c
@@ -65,10 +65,10 @@ static const unsigned char base64_dec_map[128] =
 /*
  * Encode a buffer into base64 format
  */
-int base64_encode( unsigned char *dst, int *dlen,
-                   const unsigned char *src, int  slen )
+int base64_encode( unsigned char *dst, size_t *dlen,
+                   const unsigned char *src, size_t slen )
 {
-    int i, n;
+    size_t i, n;
     int C1, C2, C3;
     unsigned char *p;
 
@@ -128,10 +128,10 @@ int base64_encode( unsigned char *dst, int *dlen,
 /*
  * Decode a base64-formatted buffer
  */
-int base64_decode( unsigned char *dst, int *dlen,
-                   const unsigned char *src, int  slen )
+int base64_decode( unsigned char *dst, size_t *dlen,
+                   const unsigned char *src, size_t slen )
 {
-    int i, j, n;
+    size_t i, j, n;
     unsigned long x;
     unsigned char *p;
 
diff --git a/lib/libalpm/base64.h b/lib/libalpm/base64.h
index 0ae9612c..406aefa1 100644
--- a/lib/libalpm/base64.h
+++ b/lib/libalpm/base64.h
@@ -25,8 +25,10 @@
 #ifndef _BASE64_H
 #define _BASE64_H
 
-#define POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL               0x0010
-#define POLARSSL_ERR_BASE64_INVALID_CHARACTER              0x0012
+#include <string.h>
+
+#define POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL               -0x0010  /**< Output buffer too small. */
+#define POLARSSL_ERR_BASE64_INVALID_CHARACTER              -0x0012  /**< Invalid character in input. */
 
 /**
  * \brief          Encode a buffer into base64 format
@@ -43,8 +45,8 @@
  * \note           Call this function with *dlen = 0 to obtain the
  *                 required buffer size in *dlen
  */
-int base64_encode( unsigned char *dst, int *dlen,
-                   const unsigned char *src, int  slen );
+int base64_encode( unsigned char *dst, size_t *dlen,
+                   const unsigned char *src, size_t slen );
 
 /**
  * \brief          Decode a base64-formatted buffer
@@ -62,7 +64,7 @@ int base64_encode( unsigned char *dst, int *dlen,
  * \note           Call this function with *dlen = 0 to obtain the
  *                 required buffer size in *dlen
  */
-int base64_decode( unsigned char *dst, int *dlen,
-                   const unsigned char *src, int  slen );
+int base64_decode( unsigned char *dst, size_t *dlen,
+                   const unsigned char *src, size_t slen );
 
 #endif /* base64.h */
diff --git a/lib/libalpm/signing.c b/lib/libalpm/signing.c
index 78e6264b..6ca32fd5 100644
--- a/lib/libalpm/signing.c
+++ b/lib/libalpm/signing.c
@@ -168,20 +168,21 @@ error:
  * @return 0 on success, 1 on failure to properly decode
  */
 static int decode_signature(const char *base64_data,
-		unsigned char **data, int *data_len) {
+		unsigned char **data, size_t *data_len) {
 	unsigned char *usline;
-	int len;
+	size_t len;
 
 	len = strlen(base64_data);
 	usline = (unsigned char *)base64_data;
-	int ret, destlen = 0;
+	int ret;
+	size_t destlen = 0;
 	/* get the necessary size for the buffer by passing 0 */
 	ret = base64_decode(NULL, &destlen, usline, len);
 	if(ret != 0 && ret != POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL) {
 		goto error;
 	}
 	/* alloc our memory and repeat the call to decode */
-	MALLOC(*data, (size_t)destlen, goto error);
+	MALLOC(*data, destlen, goto error);
 	ret = base64_decode(*data, &destlen, usline, len);
 	if(ret != 0) {
 		goto error;
@@ -270,7 +271,7 @@ int _alpm_gpgme_checksig(alpm_handle_t *handle, const char *path,
 	/* next create data object for the signature */
 	if(base64_sig) {
 		/* memory-based, we loaded it from a sync DB */
-		int data_len;
+		size_t data_len;
 		int decode_ret = decode_signature(base64_sig,
 				&decoded_sigdata, &data_len);
 		if(decode_ret) {