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sourcemod/core/logic/smn_maplists.cpp

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/**
* vim: set ts=4 sw=4 tw=99 noet :
* =============================================================================
* SourceMod
* Copyright (C) 2004-2008 AlliedModders LLC. All rights reserved.
* =============================================================================
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, version 3.0, as published by the
* Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, AlliedModders LLC gives you permission to link the
* code of this program (as well as its derivative works) to "Half-Life 2," the
* "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
* by the Valve Corporation. You must obey the GNU General Public License in
* all respects for all other code used. Additionally, AlliedModders LLC grants
* this exception to all derivative works. AlliedModders LLC defines further
* exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
* or <http://www.sourcemod.net/license.php>.
*
* Version: $Id$
*/
#include <sh_list.h>
#include <sm_namehashset.h>
#include "common_logic.h"
#include "CellArray.h"
#include <IGameHelpers.h>
#include <ILibrarySys.h>
#include <ITextParsers.h>
#include <ISourceMod.h>
#include "stringutil.h"
#include <bridge/include/CoreProvider.h>
#include <bridge/include/ILogger.h>
#include <bridge/include/IFileSystemBridge.h>
using namespace SourceHook;
struct maplist_info_t
{
bool bIsCompat;
bool bIsPath;
char name[PLATFORM_MAX_PATH];
char path[PLATFORM_MAX_PATH];
time_t last_modified_time;
CellArray *pArray;
int serial;
static inline bool matches(const char *key, const maplist_info_t *value)
{
return strcmp(value->name, key) == 0;
}
static inline uint32_t hash(const detail::CharsAndLength &key)
{
return key.hash();
}
};
#define MAPLIST_FLAG_MAPSFOLDER (1<<0) /**< On failure, use all maps in the maps folder. */
#define MAPLIST_FLAG_CLEARARRAY (1<<1) /**< If an input array is specified, clear it before adding. */
#define MAPLIST_FLAG_NO_DEFAULT (1<<2) /**< Do not read "default" or "mapcyclefile" on failure. */
class MapLists : public SMGlobalClass, public ITextListener_SMC
{
public:
enum MapListState
{
MPS_NONE,
MPS_GLOBAL,
MPS_MAPLIST,
};
public:
MapLists()
{
m_pMapCycleFile = NULL;
m_ConfigLastChanged = 0;
m_nSerialChange = 0;
}
void OnSourceModAllInitialized()
{
g_pSM->BuildPath(Path_SM, m_ConfigFile, sizeof(m_ConfigFile), "configs/maplists.cfg");
}
void OnSourceModShutdown()
{
DumpCache(NULL);
}
void GetMapCycleFilePath(char *pBuffer, int maxlen)
{
const char *pMapCycleFileName = m_pMapCycleFile ? bridge->GetCvarString(m_pMapCycleFile) : "mapcycle.txt";
g_pSM->Format(pBuffer, maxlen, "cfg/%s", pMapCycleFileName);
if (!bridge->filesystem->FileExists(pBuffer, "GAME"))
{
g_pSM->Format(pBuffer, maxlen, "%s", pMapCycleFileName);
if (!bridge->filesystem->FileExists(pBuffer, "GAME"))
{
g_pSM->Format(pBuffer, maxlen, "cfg/mapcycle_default.txt");
}
}
}
void AddOrUpdateDefault(const char *name, const char *file)
{
char path[PLATFORM_MAX_PATH];
maplist_info_t *pMapList;
if (!m_ListLookup.retrieve(name, &pMapList))
{
pMapList = new maplist_info_t;
pMapList->bIsCompat = true;
pMapList->bIsPath = true;
pMapList->last_modified_time = 0;
strncopy(pMapList->name, name, sizeof(pMapList->name));
pMapList->pArray = NULL;
strncopy(pMapList->path, file, sizeof(pMapList->path));
pMapList->serial = 0;
m_ListLookup.insert(name, pMapList);
m_MapLists.push_back(pMapList);
return;
}
/* Don't modify if it's from the config file */
if (!pMapList->bIsCompat)
return;
strncopy(path, file, sizeof(path));
/* If the path matches, don't reset the serial/time */
if (strcmp(path, pMapList->path) == 0)
return;
strncopy(pMapList->path, path, sizeof(pMapList->path));
pMapList->bIsPath = true;
pMapList->last_modified_time = 0;
pMapList->serial = 0;
}
void UpdateCache()
{
bool fileFound;
SMCError error;
time_t fileTime;
SMCStates states = {0, 0};
fileFound = libsys->FileTime(m_ConfigFile, FileTime_LastChange, &fileTime);
/* If the file is found and hasn't changed, bail out now. */
if (fileFound && fileTime == m_ConfigLastChanged)
{
return;
}
/* If the file wasn't found, and we already have entries, we bail out too.
* This case lets us optimize when a user deletes the config file, so we
* don't reparse every single time the function is called.
*/
if (!fileFound && m_MapLists.size() > 0)
{
return;
}
m_pMapCycleFile = bridge->FindConVar("mapcyclefile");
/* Dump everything we know about. */
List<maplist_info_t *> compat;
DumpCache(&compat);
/* All this is to add the default entry back in. */
maplist_info_t *pDefList = new maplist_info_t;
pDefList->bIsPath = true;
strncopy(pDefList->name, "mapcyclefile", sizeof(pDefList->name));
GetMapCycleFilePath(pDefList->path, sizeof(pDefList->path));
pDefList->last_modified_time = 0;
pDefList->pArray = NULL;
pDefList->serial = 0;
m_ListLookup.insert("mapcyclefile", pDefList);
m_MapLists.push_back(pDefList);
/* Now parse the config file even if we don't know about it.
* This will give us a nice error message.
*/
if ((error = textparser->ParseFile_SMC(m_ConfigFile, this, &states))
!= SMCError_Okay)
{
const char *errmsg = textparser->GetSMCErrorString(error);
if (errmsg == NULL)
{
errmsg = "Unknown error";
}
logger->LogError("[SM] Could not parse file \"%s\"", m_ConfigFile);
logger->LogError("[SM] Error on line %d (col %d): %s", states.line, states.col, errmsg);
}
else
{
m_ConfigLastChanged = fileTime;
}
/* Now, re-add compat stuff back in if we can. */
List<maplist_info_t *>::iterator iter = compat.begin();
while (iter != compat.end())
{
if (m_ListLookup.contains((*iter)->name))
{
/* The compatibility shim is no longer needed. */
delete (*iter)->pArray;
delete (*iter);
}
else
{
m_ListLookup.insert((*iter)->name, (*iter));
m_MapLists.push_back((*iter));
}
iter = compat.erase(iter);
}
}
void ReadSMC_ParseStart()
{
m_CurState = MPS_NONE;
m_IgnoreLevel = 0;
m_pCurMapList = NULL;
}
SMCResult ReadSMC_NewSection(const SMCStates *states, const char *name)
{
if (m_IgnoreLevel)
{
m_IgnoreLevel++;
return SMCResult_Continue;
}
if (m_CurState == MPS_NONE)
{
if (strcmp(name, "MapLists") == 0)
{
m_CurState = MPS_GLOBAL;
}
else
{
m_IgnoreLevel = 1;
}
}
else if (m_CurState == MPS_GLOBAL)
{
m_pCurMapList = new maplist_info_t;
memset(m_pCurMapList, 0, sizeof(maplist_info_t));
strncopy(m_pCurMapList->name, name, sizeof(m_pCurMapList->name));
m_CurState = MPS_MAPLIST;
}
else if (m_CurState == MPS_MAPLIST)
{
m_IgnoreLevel++;
}
return SMCResult_Continue;
}
SMCResult ReadSMC_KeyValue(const SMCStates *states, const char *key, const char *value)
{
if (m_IgnoreLevel || m_pCurMapList == NULL)
{
return SMCResult_Continue;
}
if (strcmp(key, "file") == 0)
{
strncopy(m_pCurMapList->path, value, sizeof(m_pCurMapList->path));
m_pCurMapList->bIsPath = true;
}
else if (strcmp(key, "target") == 0)
{
strncopy(m_pCurMapList->path, value, sizeof(m_pCurMapList->path));
m_pCurMapList->bIsPath = false;
}
return SMCResult_Continue;
}
SMCResult ReadSMC_LeavingSection(const SMCStates *states)
{
if (m_IgnoreLevel)
{
m_IgnoreLevel--;
return SMCResult_Continue;
}
if (m_CurState == MPS_MAPLIST)
{
if (m_pCurMapList != NULL
&& m_pCurMapList->path[0] != '\0'
&& !m_ListLookup.contains(m_pCurMapList->name))
{
m_ListLookup.insert(m_pCurMapList->name, m_pCurMapList);
m_MapLists.push_back(m_pCurMapList);
m_pCurMapList = NULL;
}
else
{
delete m_pCurMapList;
m_pCurMapList = NULL;
}
m_CurState = MPS_GLOBAL;
}
else if (m_CurState == MPS_GLOBAL)
{
m_CurState = MPS_NONE;
}
return SMCResult_Continue;
}
void ReadSMC_ParseEnd(bool halted, bool failed)
{
delete m_pCurMapList;
m_pCurMapList = NULL;
}
static bool alphanum_isdigit(const char c)
{
return c >= '0' && c <= '9';
}
static int alphanum_impl(const char *l, const char *r)
{
/**
* http://www.davekoelle.com/files/alphanum.hpp
*
* compare l and r with strcmp() semantics, but using
* the "Alphanum Algorithm". This function is designed to read
* through the l and r strings only one time, for
* maximum performance. It does not allocate memory for
* substrings.
*
* Released under the MIT License - https://opensource.org/licenses/MIT
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
enum mode_t { STRING, NUMBER } mode = STRING;
while (*l && *r)
{
if (mode == STRING)
{
char l_char, r_char;
while ((l_char = *l) && (r_char = *r))
{
// check if this are digit characters
const bool l_digit = alphanum_isdigit(l_char), r_digit = alphanum_isdigit(r_char);
// if both characters are digits, we continue in NUMBER mode
if (l_digit && r_digit)
{
mode = NUMBER;
break;
}
// if only the left character is a digit, we have a result
if (l_digit) return -1;
// if only the right character is a digit, we have a result
if (r_digit) return +1;
// compute the difference of both characters
const int diff = l_char - r_char;
// if they differ we have a result
if (diff != 0) return diff;
// otherwise process the next characters
++l;
++r;
}
}
else // mode == NUMBER
{
// get the left number
unsigned long l_int = 0;
while (*l && alphanum_isdigit(*l))
{
// TODO: this can overflow
l_int = l_int * 10 + *l - '0';
++l;
}
// get the right number
unsigned long r_int = 0;
while (*r && alphanum_isdigit(*r))
{
// TODO: this can overflow
r_int = r_int * 10 + *r - '0';
++r;
}
// if the difference is not equal to zero, we have a comparison result
const long diff = l_int - r_int;
if (diff != 0)
return diff;
// otherwise we process the next substring in STRING mode
mode = STRING;
}
}
if (*r) return -1;
if (*l) return +1;
return 0;
}
static int sort_maps_in_adt_array(const void *str1, const void *str2)
{
return alphanum_impl(static_cast<const char *>(str1), static_cast<const char *>(str2));
}
ICellArray *UpdateMapList(ICellArray *pUseArray, const char *name, int *pSerial, unsigned int flags)
{
int change_serial;
CellArray *pNewArray = NULL;
bool success, free_new_array;
free_new_array = false;
if ((success = GetMapList(&pNewArray, name, &change_serial)) == false)
{
if ((flags & MAPLIST_FLAG_NO_DEFAULT) != MAPLIST_FLAG_NO_DEFAULT)
{
/* If this list failed, and it's not the default, try the default.
*/
if (strcmp(name, "default") != 0)
{
success = GetMapList(&pNewArray, "default", &change_serial);
}
/* If either of the last two conditions failed, try again if we can. */
if (!success && strcmp(name, "mapcyclefile") != 0)
{
success = GetMapList(&pNewArray, "mapcyclefile", &change_serial);
}
}
}
/* If there was a success, and the serial has not changed, bail out. */
if (success && *pSerial == change_serial)
{
return NULL;
}
/**
* If there was a success but no map list, we need to look in the maps folder.
* If there was a failure and the flag is specified, we need to look in the maps folder.
*/
if ((success && pNewArray == NULL)
|| (!success && ((flags & MAPLIST_FLAG_MAPSFOLDER) == MAPLIST_FLAG_MAPSFOLDER)))
{
pNewArray = new CellArray(64);
free_new_array = true;
cell_t *blk;
FileFindHandle_t findHandle;
const char *fileName = bridge->filesystem->FindFirstEx("maps/*.bsp", "GAME", &findHandle);
while (fileName)
{
char buffer[PLATFORM_MAX_PATH];
UTIL_StripExtension(fileName, buffer, sizeof(buffer));
if (!gamehelpers->IsMapValid(buffer))
{
fileName = bridge->filesystem->FindNext(findHandle);
continue;
}
if ((blk = pNewArray->push()) == NULL)
{
fileName = bridge->filesystem->FindNext(findHandle);
continue;
}
strncopy((char *)blk, buffer, 255);
fileName = bridge->filesystem->FindNext(findHandle);
}
bridge->filesystem->FindClose(findHandle);
/* Remove the array if there were no items. */
if (pNewArray->size() == 0)
{
delete pNewArray;
pNewArray = NULL;
}
else
{
qsort(pNewArray->base(),
pNewArray->size(),
pNewArray->blocksize() * sizeof(cell_t),
sort_maps_in_adt_array);
}
change_serial = -1;
}
/* If there is still no array by this point, bail out. */
if (pNewArray == NULL)
{
*pSerial = -1;
return NULL;
}
*pSerial = change_serial;
/* If there is no input array, return something temporary. */
if (pUseArray == NULL)
{
if (free_new_array)
{
return pNewArray;
}
else
{
return pNewArray->clone();
}
}
/* Clear the input array if necessary. */
if ((flags & MAPLIST_FLAG_CLEARARRAY) == MAPLIST_FLAG_CLEARARRAY)
{
pUseArray->clear();
}
/* Copy. */
cell_t *blk_dst;
cell_t *blk_src;
for (size_t i = 0; i < pNewArray->size(); i++)
{
blk_dst = pUseArray->push();
blk_src = pNewArray->at(i);
strncopy((char *)blk_dst, (char *)blk_src, pUseArray->blocksize() * sizeof(cell_t));
}
/* Free resources if necessary. */
if (free_new_array)
{
delete pNewArray;
}
/* Return the array we were given. */
return pUseArray;
}
private:
bool GetMapList(CellArray **ppArray, const char *name, int *pSerial)
{
time_t last_time;
maplist_info_t *pMapList;
if (!m_ListLookup.retrieve(name, &pMapList))
return false;
if (!pMapList->bIsPath)
return GetMapList(ppArray, pMapList->path, pSerial);
/* If it is a path, and the path is "*", assume all files must be used. */
if (strcmp(pMapList->path, "*") == 0)
{
*ppArray = NULL;
return true;
}
if (m_pMapCycleFile != NULL && strcmp(name, "mapcyclefile") == 0)
{
char path[PLATFORM_MAX_PATH];
GetMapCycleFilePath(path, sizeof(path));
if (strcmp(path, pMapList->path) != 0)
{
strncopy(pMapList->path, path, sizeof(pMapList->path));
pMapList->last_modified_time = 0;
}
}
char realpath[PLATFORM_MAX_PATH];
g_pSM->BuildPath(Path_Game, realpath, sizeof(realpath), "%s", pMapList->path);
if (!libsys->FileTime(realpath, FileTime_LastChange, &last_time)
|| last_time > pMapList->last_modified_time)
{
/* Reparse */
FileHandle_t fp;
cell_t *blk;
char buffer[255];
if ((fp = bridge->filesystem->Open(pMapList->path, "rt", "GAME")) == NULL)
{
return false;
}
delete pMapList->pArray;
pMapList->pArray = new CellArray(64);
while (!bridge->filesystem->EndOfFile(fp) && bridge->filesystem->ReadLine(buffer, sizeof(buffer), fp) != NULL)
{
size_t len = strlen(buffer);
char *ptr = UTIL_TrimWhitespace(buffer, len);
if (*ptr == '\0'
|| *ptr == ';'
|| strncmp(ptr, "//", 2) == 0)
{
continue;
}
if (strcmp(bridge->GetSourceEngineName(), "insurgency") == 0
|| strcmp(bridge->GetSourceEngineName(), "doi") == 0)
{
// Insurgency and Day of Infamy (presumably?) doesn't allow spaces in map names
// and do use a space to delimit the map name from the map mode
int i = 0;
while (ptr[i] != 0)
{
if (ptr[i] == ' ')
{
ptr[i] = 0;
break;
}
++i;
}
}
if (!gamehelpers->IsMapValid(ptr))
{
continue;
}
if ((blk = pMapList->pArray->push()) != NULL)
{
strncopy((char *)blk, ptr, 255);
}
}
bridge->filesystem->Close(fp);
pMapList->last_modified_time = last_time;
pMapList->serial = ++m_nSerialChange;
}
if (pMapList->pArray == NULL || pMapList->pArray->size() == 0)
{
return false;
}
*pSerial = pMapList->serial;
*ppArray = pMapList->pArray;
return true;
}
void DumpCache(List<maplist_info_t *> *compat_list)
{
m_ListLookup.clear();
List<maplist_info_t *>::iterator iter = m_MapLists.begin();
while (iter != m_MapLists.end())
{
if (compat_list != NULL && (*iter)->bIsCompat)
{
compat_list->push_back((*iter));
}
else
{
delete (*iter)->pArray;
delete (*iter);
}
iter = m_MapLists.erase(iter);
}
}
private:
char m_ConfigFile[PLATFORM_MAX_PATH];
time_t m_ConfigLastChanged;
ConVar *m_pMapCycleFile;
NameHashSet<maplist_info_t *> m_ListLookup;
List<maplist_info_t *> m_MapLists;
MapListState m_CurState;
unsigned int m_IgnoreLevel;
maplist_info_t *m_pCurMapList;
int m_nSerialChange;
} s_MapLists;
static cell_t LoadMapList(IPluginContext *pContext, const cell_t *params)
{
char *str;
Handle_t hndl;
cell_t *addr, flags;
ICellArray *pArray, *pNewArray;
hndl = params[1];
pContext->LocalToPhysAddr(params[2], &addr);
pContext->LocalToString(params[3], &str);
flags = params[4];
/* Make sure the input Handle is valid */
pArray = NULL;
if (hndl != BAD_HANDLE)
{
HandleError err;
HandleSecurity sec(pContext->GetIdentity(), g_pCoreIdent);
if ((err = handlesys->ReadHandle(hndl, htCellArray, &sec, (void **)&pArray))
!= HandleError_None)
{
return pContext->ThrowNativeError("Invalid Handle %x (error %d)", hndl, err);
}
}
/* Make sure the map list cache is up to date at the root */
s_MapLists.UpdateCache();
/* Try to get the map list. */
if ((pNewArray = s_MapLists.UpdateMapList(pArray, str, addr, flags)) == NULL)
{
return BAD_HANDLE;
}
/* If the user wanted a new array, create it now. */
if (hndl == BAD_HANDLE)
{
if ((hndl = handlesys->CreateHandle(htCellArray, pNewArray, pContext->GetIdentity(), g_pCoreIdent, NULL))
== BAD_HANDLE)
{
*addr = -1;
delete pNewArray;
return BAD_HANDLE;
}
}
return hndl;
}
static cell_t SetMapListCompatBind(IPluginContext *pContext, const cell_t *params)
{
char *name, *file;
pContext->LocalToString(params[1], &name);
pContext->LocalToString(params[2], &file);
s_MapLists.UpdateCache();
s_MapLists.AddOrUpdateDefault(name, file);
return 1;
}
REGISTER_NATIVES(mapListNatives)
{
{"ReadMapList", LoadMapList},
{"SetMapListCompatBind", SetMapListCompatBind},
{NULL, NULL},
};
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