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https://github.com/ddnet/ddnet.git
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409bc0e019
This also fixes a couple of potential buffer overflows. The affected code is still buggy (doesn't do the right thing on potential buffer overflow), but at least it won't result in crashes/out of bound writes anymore.
105 lines
2.7 KiB
C++
105 lines
2.7 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 <engine/config.h>
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#include <engine/storage.h>
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#include <engine/shared/config.h>
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#include <engine/shared/protocol.h>
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CConfiguration g_Config;
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class CConfig : public IConfig
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{
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IStorage *m_pStorage;
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IOHANDLE m_ConfigFile;
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struct CCallback
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{
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SAVECALLBACKFUNC m_pfnFunc;
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void *m_pUserData;
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};
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enum
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{
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MAX_CALLBACKS = 16
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};
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CCallback m_aCallbacks[MAX_CALLBACKS];
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int m_NumCallbacks;
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void EscapeParam(char *pDst, const char *pSrc, int Size)
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{
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str_escape(&pDst, pSrc, pDst + Size);
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}
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public:
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CConfig()
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{
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m_ConfigFile = 0;
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m_NumCallbacks = 0;
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}
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virtual void Init()
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{
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m_pStorage = Kernel()->RequestInterface<IStorage>();
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Reset();
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}
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virtual void Reset()
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{
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#define MACRO_CONFIG_INT(Name,ScriptName,def,min,max,flags,desc) g_Config.m_##Name = def;
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#define MACRO_CONFIG_STR(Name,ScriptName,len,def,flags,desc) str_copy(g_Config.m_##Name, def, len);
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#include "config_variables.h"
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#undef MACRO_CONFIG_INT
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#undef MACRO_CONFIG_STR
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}
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virtual void Save()
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{
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if(!m_pStorage || !g_Config.m_ClSaveSettings)
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return;
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m_ConfigFile = m_pStorage->OpenFile(CONFIG_FILE ".tmp", IOFLAG_WRITE, IStorage::TYPE_SAVE);
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if(!m_ConfigFile)
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return;
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char aLineBuf[1024*2];
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char aEscapeBuf[1024*2];
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#define MACRO_CONFIG_INT(Name,ScriptName,def,min,max,flags,desc) if((flags)&CFGFLAG_SAVE) { str_format(aLineBuf, sizeof(aLineBuf), "%s %i", #ScriptName, g_Config.m_##Name); WriteLine(aLineBuf); }
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#define MACRO_CONFIG_STR(Name,ScriptName,len,def,flags,desc) if((flags)&CFGFLAG_SAVE) { EscapeParam(aEscapeBuf, g_Config.m_##Name, sizeof(aEscapeBuf)); str_format(aLineBuf, sizeof(aLineBuf), "%s \"%s\"", #ScriptName, aEscapeBuf); WriteLine(aLineBuf); }
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#include "config_variables.h"
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#undef MACRO_CONFIG_INT
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#undef MACRO_CONFIG_STR
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for(int i = 0; i < m_NumCallbacks; i++)
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m_aCallbacks[i].m_pfnFunc(this, m_aCallbacks[i].m_pUserData);
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io_close(m_ConfigFile);
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m_ConfigFile = 0;
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m_pStorage->RenameFile(CONFIG_FILE ".tmp", CONFIG_FILE, IStorage::TYPE_SAVE);
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}
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virtual void RegisterCallback(SAVECALLBACKFUNC pfnFunc, void *pUserData)
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{
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dbg_assert(m_NumCallbacks < MAX_CALLBACKS, "too many config callbacks");
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m_aCallbacks[m_NumCallbacks].m_pfnFunc = pfnFunc;
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m_aCallbacks[m_NumCallbacks].m_pUserData = pUserData;
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m_NumCallbacks++;
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}
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virtual void WriteLine(const char *pLine)
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{
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if(!m_ConfigFile)
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return;
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io_write(m_ConfigFile, pLine, str_length(pLine));
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io_write_newline(m_ConfigFile);
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}
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};
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IConfig *CreateConfig() { return new CConfig; }
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