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108 lines
2.8 KiB
C++
108 lines
2.8 KiB
C++
/* (c) Magnus Auvinen. See licence.txt in the root of the distribution for more information. */
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/* If you are missing that file, acquire a complete release at teeworlds.com. */
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#include <base/math.h>
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#include <base/system.h>
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#include <engine/storage.h>
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#include <versionsrv/versionsrv.h>
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#include <versionsrv/mapversions.h>
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#include "datafile.h"
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#include "memheap.h"
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#include "mapchecker.h"
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CMapChecker::CMapChecker()
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{
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Init();
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SetDefaults();
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}
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void CMapChecker::Init()
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{
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m_Whitelist.Reset();
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m_pFirst = 0;
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m_RemoveDefaultList = false;
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}
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void CMapChecker::SetDefaults()
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{
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AddMaplist(s_aMapVersionList, s_NumMapVersionItems);
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m_RemoveDefaultList = true;
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}
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void CMapChecker::AddMaplist(CMapVersion *pMaplist, int Num)
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{
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if(m_RemoveDefaultList)
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Init();
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for(int i = 0; i < Num; ++i)
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{
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CWhitelistEntry *pEntry = (CWhitelistEntry *)m_Whitelist.Allocate(sizeof(CWhitelistEntry));
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pEntry->m_pNext = m_pFirst;
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m_pFirst = pEntry;
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str_copy(pEntry->m_aMapName, pMaplist[i].m_aName, sizeof(pEntry->m_aMapName));
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pEntry->m_MapCrc = (pMaplist[i].m_aCrc[0]<<24) | (pMaplist[i].m_aCrc[1]<<16) | (pMaplist[i].m_aCrc[2]<<8) | pMaplist[i].m_aCrc[3];
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pEntry->m_MapSize = (pMaplist[i].m_aSize[0]<<24) | (pMaplist[i].m_aSize[1]<<16) | (pMaplist[i].m_aSize[2]<<8) | pMaplist[i].m_aSize[3];
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}
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}
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bool CMapChecker::IsMapValid(const char *pMapName, unsigned MapCrc, unsigned MapSize)
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{
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bool StandardMap = false;
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for(CWhitelistEntry *pCurrent = m_pFirst; pCurrent; pCurrent = pCurrent->m_pNext)
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{
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if(str_comp(pCurrent->m_aMapName, pMapName) == 0)
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{
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StandardMap = true;
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if(pCurrent->m_MapCrc == MapCrc && pCurrent->m_MapSize == MapSize)
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return true;
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}
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}
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return StandardMap?false:true;
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}
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bool CMapChecker::ReadAndValidateMap(IStorage *pStorage, const char *pFilename, int StorageType)
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{
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bool LoadedMapInfo = false;
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bool StandardMap = false;
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unsigned MapCrc = 0;
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unsigned MapSize = 0;
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// extract map name
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char aMapName[MAX_MAP_LENGTH];
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const char *pExtractedName = pFilename;
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const char *pEnd = 0;
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for(const char *pSrc = pFilename; *pSrc; ++pSrc)
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{
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if(*pSrc == '/' || *pSrc == '\\')
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pExtractedName = pSrc+1;
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else if(*pSrc == '.')
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pEnd = pSrc;
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}
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int Length = (int)(pEnd - pExtractedName);
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if(Length <= 0 || Length >= MAX_MAP_LENGTH)
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return true;
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str_copy(aMapName, pExtractedName, min((int)MAX_MAP_LENGTH, (int)(pEnd-pExtractedName+1)));
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// check for valid map
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for(CWhitelistEntry *pCurrent = m_pFirst; pCurrent; pCurrent = pCurrent->m_pNext)
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{
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if(str_comp(pCurrent->m_aMapName, aMapName) == 0)
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{
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StandardMap = true;
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if(!LoadedMapInfo)
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{
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if(!CDataFileReader::GetCrcSize(pStorage, pFilename, StorageType, &MapCrc, &MapSize))
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return true;
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LoadedMapInfo = true;
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}
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if(pCurrent->m_MapCrc == MapCrc && pCurrent->m_MapSize == MapSize)
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return true;
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}
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}
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return StandardMap?false:true;
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}
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