From 1cac1de3b27c5c6a511bf86bd9cb1d763c5c7d5d Mon Sep 17 00:00:00 2001
From: Perttu Ahola <celeron55@gmail.com>
Date: Sun, 25 Mar 2012 14:47:51 +0300
Subject: Almost support loading sounds from server

---
 src/filecache.cpp | 54 +++++++++++++++++++++++++++++++-----------------------
 1 file changed, 31 insertions(+), 23 deletions(-)

(limited to 'src/filecache.cpp')

diff --git a/src/filecache.cpp b/src/filecache.cpp
index 5ba8ef5cc..0ef2dd11e 100644
--- a/src/filecache.cpp
+++ b/src/filecache.cpp
@@ -24,6 +24,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "filesys.h"
 #include "utility.h"
 #include "hex.h"
+#include "sha1.h"
 
 #include <string>
 #include <iostream>
@@ -34,7 +35,7 @@ bool FileCache::loadByPath(const std::string &path, std::ostream &os)
 
 	if(!fis.good()){
 		verbosestream<<"FileCache: File not found in cache: "
-    			<<path<<std::endl;
+				<<path<<std::endl;
 		return false;
 	}
 
@@ -53,7 +54,7 @@ bool FileCache::loadByPath(const std::string &path, std::ostream &os)
 	}
 	if(bad){
 		errorstream<<"FileCache: Failed to read file from cache: \""
-		    	<<path<<"\""<<std::endl;
+				<<path<<"\""<<std::endl;
 	}
 
 	return !bad;
@@ -67,7 +68,7 @@ bool FileCache::updateByPath(const std::string &path, const std::string &data)
 	if(!file.good())
 	{
 		errorstream<<"FileCache: Can't write to file at "
-    			<<path<<std::endl;
+				<<path<<std::endl;
 		return false;
 	}
 
@@ -77,34 +78,41 @@ bool FileCache::updateByPath(const std::string &path, const std::string &data)
 	return !file.fail();
 }
 
-bool FileCache::loadByName(const std::string &name, std::ostream &os)
-{
-	std::string path = m_dir + DIR_DELIM + name;
-	return loadByPath(path, os);
-}
-
-
-bool FileCache::updateByName(const std::string &name, const std::string &data)
+bool FileCache::update(const std::string &name, const std::string &data)
 {
 	std::string path = m_dir + DIR_DELIM + name;
 	return updateByPath(path, data);
 }
-
-std::string FileCache::getPathFromChecksum(const std::string &checksum)
+bool FileCache::update_sha1(const std::string &data)
 {
-	std::string checksum_hex = hex_encode(checksum.c_str(), checksum.length());
-	return m_dir + DIR_DELIM + checksum_hex;
+	SHA1 sha1;
+	sha1.addBytes(data.c_str(), data.size());
+	unsigned char *digest = sha1.getDigest();
+	std::string sha1_raw((char*)digest, 20);
+	free(digest);
+	std::string sha1_hex = hex_encode(sha1_raw);
+	return update(sha1_hex, data);
 }
-
-bool FileCache::loadByChecksum(const std::string &checksum, std::ostream &os)
+bool FileCache::load(const std::string &name, std::ostream &os)
 {
-	std::string path = getPathFromChecksum(checksum);
+	std::string path = m_dir + DIR_DELIM + name;
 	return loadByPath(path, os);
 }
-
-bool FileCache::updateByChecksum(const std::string &checksum,
-		const std::string &data)
+bool FileCache::load_sha1(const std::string &sha1_raw, std::ostream &os)
 {
-	std::string path = getPathFromChecksum(checksum);
-	return updateByPath(path, data);
+	std::ostringstream tmp_os(std::ios_base::binary);
+	if(!load(hex_encode(sha1_raw), tmp_os))
+		return false;
+	SHA1 sha1;
+	sha1.addBytes(tmp_os.str().c_str(), tmp_os.str().length());
+	unsigned char *digest = sha1.getDigest();
+	std::string sha1_real_raw((char*)digest, 20);
+	free(digest);
+	if(sha1_real_raw != sha1_raw){
+		verbosestream<<"FileCache["<<m_dir<<"]: filename "<<sha1_real_raw
+				<<" mismatches actual checksum"<<std::endl;
+		return false;
+	}
+	os<<tmp_os.str();
+	return true;
 }
-- 
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