MyFavMirrors/Ventoy
1
0
Fork 0
mirror of https://github.com/ventoy/Ventoy.git synced 2024-12-26 23:25:57 -05:00
Code Issues Packages Projects Releases Wiki Activity
ec4b6c2a2c
Ventoy/VtoyTool/BabyISO/biso_9660.c
longpanda 05a1b863a6 initial commit
2020-04-05 00:08:01 +08:00

1459 lines
43 KiB
C
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/******************************************************************************
* biso_9660.c
*
* Copyright (c) 2020, longpanda <admin@ventoy.net>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 3 of the
* License, or (at your option) any later version.
*
* 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/>.
*
*/
#include "biso.h"
#include "biso_list.h"
#include "biso_util.h"
#include "biso_plat.h"
#include "biso_9660.h"
#include "biso_eltorito.h"
#include "biso_rockridge.h"
#include "biso_dump.h"
STATIC ULONG BISO_9660_ReadPathTable(IN BISO_FILE_S *pstFile, OUT BISO_PARSER_S *pstParser)
{
UINT64 ui64Seek = 0;
UINT uiReadLen = 0;
UCHAR *pucBuf = NULL;
BISO_PVD_S *pstPVD = NULL;
DBGASSERT(NULL != pstFile);
DBGASSERT(NULL != pstParser);
pstPVD = pstParser->pstPVD;
ui64Seek = BISO_PATHTBL_LOCATION(pstPVD);
ui64Seek = ui64Seek * BISO_BLOCK_SIZE;
/*
* 申请内存用于保存Path Table
* 由于Path Table是连续保存的，所以这里一次性读出保存，使用时再做解析
* Path Table保存时是连续的，一条Path Table可以跨block, 最后一个扇区的剩余空间填0
*/
pucBuf = (UCHAR *)BISO_MALLOC(pstPVD->uiPathTblSize);
if (NULL == pucBuf)
{
return BISO_ERR_ALLOC_MEM;
}
BISO_PLAT_SeekFile(pstFile, ui64Seek, SEEK_SET);
/* 读出Path Table */
uiReadLen = (UINT)BISO_PLAT_ReadFile(pstFile, 1, pstPVD->uiPathTblSize, pucBuf);
if (uiReadLen != pstPVD->uiPathTblSize)
{
BISO_FREE(pucBuf);
BISO_DIAG("Read Len %u, data len %u.", uiReadLen, pstPVD->uiPathTblSize);
return BISO_ERR_READ_FILE;
}
pstParser->pucPathTable = pucBuf;
return BISO_SUCCESS;
}
/* 深度优先文件树目录节点入栈 注意这里只是针对目录节点入栈, 文件节点没有处理 */
VOID BISO_9660_FillDfsStack
(
IN BISO_DIR_TREE_S *pstTop,
INOUT BISO_QUEUE_S *pstQueue
)
{
BISO_DIR_TREE_S *pstCurDir = NULL;
DBGASSERT(NULL != pstTop);
DBGASSERT(NULL != pstQueue);
/* TOP入栈 */
BISO_QUEUE_Push(pstQueue, pstTop);
pstCurDir = pstTop->pstChild;
if (NULL == pstCurDir)
{
return;
}
for ( ; ; )
{
/*
* 按照以下顺序依次入栈:
* 1. 自己入栈
* 2. 子节点入栈
* 3. Next节点入栈
* 4. Parent的Next节点入栈
*/
BISO_QUEUE_Push(pstQueue, pstCurDir);
if (NULL != pstCurDir->pstChild)
{
pstCurDir = pstCurDir->pstChild;
}
else if (NULL != pstCurDir->pstNext)
{
pstCurDir = pstCurDir->pstNext;
}
else
{
/* 往上回溯, 一直找到需要入栈的节点 */
while ((pstTop != pstCurDir->pstParent) && (NULL == pstCurDir->pstParent->pstNext))
{
pstCurDir = pstCurDir->pstParent;
}
if (pstTop == pstCurDir->pstParent)
{
break;
}
pstCurDir = pstCurDir->pstParent->pstNext;
}
}
}
/* 根据Extent的值查找子目录节点 */
STATIC BISO_DIR_TREE_S *BISO_9660_FindChild
(
IN BISO_DIR_TREE_S *pstParent,
IN UINT uiChildExtent
)
{
BISO_DIR_TREE_S *pstCurNode = NULL;
DBGASSERT(NULL != pstParent);
pstCurNode = pstParent->pstChild;
while (NULL != pstCurNode)
{
if (pstCurNode->uiExtent == uiChildExtent)
{
return pstCurNode;
}
pstCurNode = pstCurNode->pstNext;
}
return NULL;
}
STATIC ULONG BISO_9660_ReadVD(IN BISO_FILE_S *pstFile, OUT BISO_PARSER_S *pstParser)
{
UINT uiReadLen = 0;
BISO_VD_S stVolDesc;
BISO_VD_NODE_S *pstVdNode = NULL;
DBGASSERT(NULL != pstFile);
DBGASSERT(NULL != pstParser);
/* 标准规定前16个逻辑扇区用来保存系统数据，VD信息从第17个扇区开始 */
BISO_PLAT_SeekFile(pstFile, BISO_SYSTEM_AREA_SIZE, SEEK_SET);
do
{
/* 每次读取1个VD结构 */
uiReadLen = (UINT)BISO_PLAT_ReadFile(pstFile, 1, sizeof(stVolDesc), &stVolDesc);
if (uiReadLen != sizeof(stVolDesc))
{
BISO_DIAG("Read Len %u, struct len %u.", uiReadLen, (UINT)sizeof(stVolDesc));
return BISO_ERR_READ_FILE;
}
/* 根据ID检验是否是合法的ISO-9660格式 */
if (0 != strncmp(stVolDesc.szId, BISO_VD_ID, strlen(BISO_VD_ID)))
{
BISO_DIAG("Invalid cdid: %02x %02x %02x %02x %02x\n",
(UCHAR)stVolDesc.szId[0], (UCHAR)stVolDesc.szId[1],
(UCHAR)stVolDesc.szId[2], (UCHAR)stVolDesc.szId[3],
(UCHAR)stVolDesc.szId[4]);
return BISO_ERR_INVALID_ISO9660;
}
/* 申请内存保存VD信息 */
pstVdNode = (BISO_VD_NODE_S *)BISO_ZALLOC(sizeof(BISO_VD_NODE_S));
if (NULL == pstVdNode)
{
return BISO_ERR_ALLOC_MEM;
}
/* 链表节点挂接 */
memcpy(&(pstVdNode->stVD), &stVolDesc, sizeof(BISO_VD_S));
BISO_DLL_AddTail(&(pstParser->stVDList), (BISO_DLL_NODE_S *)pstVdNode);
switch (stVolDesc.ucType)
{
case BISO_VD_TYPE_BOOT:
{
pstParser->pstBVD = (BISO_BVD_S *)&(pstVdNode->stVD);
pstParser->pstBVD->uiBootCatlogStart = BISO_LTOH_UINT(pstParser->pstBVD->uiBootCatlogStart);
break;
}
case BISO_VD_TYPE_PVD:
{
pstParser->pstPVD = (BISO_PVD_S *)&(pstVdNode->stVD);
break;
}
case BISO_VD_TYPE_SVD:
{
pstParser->pstSVD = (BISO_SVD_S *)&(pstVdNode->stVD);
break;
}
case BISO_VD_TYPE_PART:
case BISO_VD_TYPE_END:
{
break;
}
default :
{
BISO_DIAG("Invalid VD type: %u\n", stVolDesc.ucType);
return BISO_ERR_INVALID_ISO9660;
}
}
} while (BISO_VD_TYPE_END != stVolDesc.ucType);
/* 标准规定必须有1个主卷描述符 */
if (NULL == pstParser->pstPVD)
{
BISO_DIAG("No PVD found.");
return BISO_ERR_INVALID_ISO9660;
}
/* 目前只支持逻辑块大小为2048 */
if (BISO_BLOCK_SIZE != pstParser->pstPVD->usBlockSize)
{
BISO_DIAG("Unsupported block size %u.", pstParser->pstPVD->usBlockSize);
return BISO_ERR_UNSUPPORTED_BLKSIZE;
}
return BISO_SUCCESS;
}
STATIC UCHAR * BISO_9660_ReadDirRecord
(
IN BISO_FILE_S *pstFile,
IN UINT uiExtent,
OUT UINT *puiSize
)
{
UINT64 ui64Seek = 0;
UINT uiReadLen = 0;
UCHAR *pucBuf = NULL;
BISO_DIR_RECORD_S stCurrent;
DBGASSERT(NULL != pstFile);
DBGASSERT(NULL != puiSize);
/* 第一条Dir Record是Current, 先读出自己,得到总的缓冲区长度 */
ui64Seek = BISO_BLOCK_SIZE * (UINT64)uiExtent;
BISO_PLAT_SeekFile(pstFile, ui64Seek, SEEK_SET);
uiReadLen = (UINT)BISO_PLAT_ReadFile(pstFile, 1, sizeof(stCurrent), &stCurrent);
if (uiReadLen != sizeof(stCurrent))
{
BISO_DIAG("Read len %u, buf len %u.", uiReadLen, (UINT)sizeof(stCurrent));
return NULL;
}
/* 申请内存, 一次性把当前目录的Directory信息全部读出 */
pucBuf = (UCHAR *)BISO_MALLOC(stCurrent.uiSize);
if (NULL == pucBuf)
{
return NULL;
}
BISO_PLAT_SeekFile(pstFile, ui64Seek, SEEK_SET);
uiReadLen = (UINT)BISO_PLAT_ReadFile(pstFile, 1, stCurrent.uiSize, pucBuf);
if (uiReadLen != stCurrent.uiSize)
{
BISO_DIAG("Read len %u, buf len %u.", uiReadLen, stCurrent.uiSize);
BISO_FREE(pucBuf);
return NULL;
}
*puiSize = stCurrent.uiSize;
return pucBuf;
}
STATIC BISO_DIR_TREE_S * BISO_9660_CreateDirNode
(
IN BISO_FILE_S *pstFile,
IN BISO_PARSER_S *pstParser,
IN BISO_DIR_RECORD_S *pstRecord,
INOUT BISO_DIR_TREE_S *pstPre,
INOUT BISO_DIR_TREE_S *pstParent
)
{
BISO_DIR_TREE_S *pstNew = NULL;
DBGASSERT(NULL != pstRecord);
DBGASSERT(NULL != pstPre);
DBGASSERT(NULL != pstParent);
/* 申请内存用于保存目录节点 */
pstNew = (BISO_DIR_TREE_S *)BISO_ZALLOC(sizeof(BISO_DIR_TREE_S));
if (NULL == pstNew)
{
return NULL;
}
/* 目录节点属性赋值 */
BISO_UTIL_CopyStr(pstRecord->szName, pstRecord->ucNameLen, pstNew->szName);
pstNew->uiExtent = pstRecord->uiExtent;
pstNew->usNameLen = (USHORT)strlen(pstNew->szName);
/* 申请统计信息的节点 */
pstNew->pstDirStat = (BISO_DIR_STAT_S *)BISO_ZALLOC(sizeof(BISO_DIR_STAT_S));
if (NULL == pstNew->pstDirStat)
{
BISO_FREE(pstNew);
return NULL;
}
/* 挂接到父目录下 */
if (NULL == pstPre)
{
pstParent->pstChild = pstNew;
}
else
{
pstPre->pstNext = pstNew;
}
pstNew->pstParent = pstParent;
/* 更新父目录统计 */
pstParent->pstDirStat->uiCurDirNum++;
/* 更新目录的Rock Ridge扩展信息 */
(VOID)BISO_RRIP_ReadExtInfo(pstFile, pstParser, pstRecord, pstNew);
return pstNew;
}
STATIC BISO_SVD_DIR_TREE_S * BISO_9660_CreateSVDDirNode
(
IN BISO_FILE_S *pstFile,
IN BISO_PARSER_S *pstParser,
IN BISO_DIR_RECORD_S *pstRecord,
INOUT BISO_SVD_DIR_TREE_S *pstPre,
INOUT BISO_SVD_DIR_TREE_S *pstParent
)
{
BISO_SVD_DIR_TREE_S *pstNew = NULL;
DBGASSERT(NULL != pstRecord);
DBGASSERT(NULL != pstPre);
DBGASSERT(NULL != pstParent);
/* 申请内存用于保存目录节点 */
pstNew = (BISO_SVD_DIR_TREE_S *)BISO_ZALLOC(sizeof(BISO_SVD_DIR_TREE_S));
if (NULL == pstNew)
{
return NULL;
}
/* 目录节点属性赋值 */
pstNew->uiExtent = pstRecord->uiExtent;
/* 挂接到父目录下 */
if (NULL == pstPre)
{
pstParent->pstChild = pstNew;
}
else
{
pstPre->pstNext = pstNew;
}
pstNew->pstParent = pstParent;
return pstNew;
}
/* ISO原始文件格式处理 */
STATIC ULONG BISO_9660_ProcRawFileNameFmt(INOUT CHAR *szFileName, INOUT USHORT *pusLen)
{
UINT i;
UINT uiSepNum = 0;
UINT uiSepIndex = 0;
UINT uiDotNum = 0;
UINT uiLen = *pusLen;
for (i = 0; i < uiLen; i++)
{
if (szFileName[i] == ';')
{
if (uiSepNum > 0)
{
return BISO_SUCCESS;
}
uiSepNum++;
uiSepIndex = i;
}
else if (szFileName[i] == '.')
{
if (uiDotNum > 0)
{
return BISO_SUCCESS;
}
uiDotNum++;
}
else if (szFileName[i] >= 'a' && szFileName[i] <= 'z')
{
return BISO_SUCCESS;
}
}
/* 必须只包含1个分号和1个点号 */
if (uiSepNum != 1 || uiSepIndex == 0 || uiDotNum != 1)
{
return BISO_SUCCESS;
}
/* 分号后面是文件版本号, 纯数字 */
for (i = uiSepIndex + 1; i < uiLen; i++)
{
if (szFileName[i] < '0' || szFileName[i] > '9')
{
return BISO_SUCCESS;
}
}
/* 把分号后面剔除 */
szFileName[uiSepIndex] = 0;
uiLen = uiSepIndex;
/* 如果只有文件名没有扩展名则把最后的点号去掉 */
if (uiLen > 1 && szFileName[uiLen - 1] == '.')
{
szFileName[uiLen - 1] = 0;
uiLen--;
}
*pusLen = (USHORT)uiLen;
/* 转换为小写 */
for (i = 0; i < uiLen; i++)
{
if (szFileName[i] >= 'A' && szFileName[i] <= 'Z')
{
szFileName[i] = 'a' + (szFileName[i] - 'A');
}
}
return BISO_SUCCESS;
}
STATIC BISO_DIR_TREE_S * BISO_9660_CreateFileNode
(
IN BISO_FILE_S *pstFile,
IN BISO_PARSER_S *pstParser,
IN BISO_DIR_RECORD_S *pstRecord,
INOUT BISO_DIR_TREE_S *pstPre,
INOUT BISO_DIR_TREE_S *pstParent
)
{
UINT uiSecNum = 0;
BISO_DIR_TREE_S *pstNew = NULL;
DBGASSERT(NULL != pstRecord);
DBGASSERT(NULL != pstPre);
DBGASSERT(NULL != pstParent);
/* 申请内存用于保存文件节点 */
pstNew = (BISO_DIR_TREE_S *)BISO_ZALLOC(sizeof(BISO_DIR_TREE_S));
if (NULL == pstNew)
{
return NULL;
}
/* 目录节点属性赋值 */
BISO_UTIL_CopyStr(pstRecord->szName, pstRecord->ucNameLen, pstNew->szName);
pstNew->uiExtent = pstRecord->uiExtent;
pstNew->usNameLen = (USHORT)strlen(pstNew->szName);
pstNew->uiSize = pstRecord->uiSize;
/* 读取文件的Rock Ridge扩展信息 */
(VOID)BISO_RRIP_ReadExtInfo(pstFile, pstParser, pstRecord, pstNew);
/* 更新文件所在目录的记录 */
if (BOOL_TRUE == BISO_DIR_TREE_IS_SYMLINK(pstNew))
{
pstParent->pstDirStat->uiCurLinkNum++;
}
else
{
uiSecNum = BISO_USED_SECTOR_NUM(pstNew->uiSize);
pstParent->pstDirStat->uiCurFileNum++;
pstParent->pstDirStat->uiCurUsedSec += uiSecNum;
pstParent->pstDirStat->ui64CurSpace += pstNew->uiSize;
}
/* 节点挂接到当前目录的FileList上 */
if (NULL == pstPre)
{
pstParent->pstFileList = pstNew;
}
else
{
pstPre->pstNext = pstNew;
}
pstNew->pstParent = pstParent;
if (NULL == pstNew->pstPosixInfo && pstNew->usNameLen > 2)
{
BISO_9660_ProcRawFileNameFmt(pstNew->szName, &pstNew->usNameLen);
}
return pstNew;
}
STATIC BISO_SVD_DIR_TREE_S * BISO_9660_CreateSVDFileNode
(
IN BISO_FILE_S *pstFile,
IN BISO_PARSER_S *pstParser,
IN BISO_DIR_RECORD_S *pstRecord,
INOUT BISO_SVD_DIR_TREE_S *pstPre,
INOUT BISO_SVD_DIR_TREE_S *pstParent
)
{
BISO_SVD_DIR_TREE_S *pstNew = NULL;
DBGASSERT(NULL != pstRecord);
DBGASSERT(NULL != pstPre);
DBGASSERT(NULL != pstParent);
/* 申请内存用于保存文件节点 */
pstNew = (BISO_SVD_DIR_TREE_S *)BISO_ZALLOC(sizeof(BISO_SVD_DIR_TREE_S));
if (NULL == pstNew)
{
return NULL;
}
/* 目录节点属性赋值 */
pstNew->uiExtent = pstRecord->uiExtent;
pstNew->uiSize = pstRecord->uiSize;
/* 节点挂接到当前目录的FileList上 */
if (NULL == pstPre)
{
pstParent->pstFileList = pstNew;
}
else
{
pstPre->pstNext = pstNew;
}
pstNew->pstParent = pstParent;
return pstNew;
}
STATIC ULONG BISO_9660_BuildFileList
(
IN BISO_FILE_S *pstFile,
IN BISO_PARSER_S *pstParser,
OUT BISO_DIR_TREE_S *pstDirTree
)
{
UINT uiTail = 0;
UINT uiBufSize = 0;
UINT uiTotSize = 0;
UCHAR *pucBuf = NULL;
BISO_DIR_TREE_S *pstPre = NULL;
BISO_DIR_TREE_S *pstNew = NULL;
BISO_DIR_TREE_S *pstChild = NULL;
BISO_DIR_RECORD_S *pstCurrent = NULL;
DBGASSERT(NULL != pstFile);
DBGASSERT(NULL != pstDirTree);
/* 读取Directory Record记录 */
pucBuf = BISO_9660_ReadDirRecord(pstFile, pstDirTree->uiExtent, &uiBufSize);
if (NULL == pucBuf)
{
return BISO_ERR_ALLOC_MEM;
}
pstCurrent = (BISO_DIR_RECORD_S *)pucBuf;
pstChild = pstDirTree->pstChild;
while (uiTotSize < uiBufSize)
{
if (BOOL_TRUE != BISO_DIR_RECORD_IS_PATH(pstCurrent)) /* 只处理文件 */
{
/* 创建文件节点 */
pstNew = BISO_9660_CreateFileNode(pstFile, pstParser, pstCurrent, pstPre, pstDirTree);
if (NULL == pstNew)
{
BISO_FREE(pucBuf);
return BISO_ERR_ALLOC_MEM;
}
pstNew->ui64FileRecordOffset = (UINT64)((UINT64)pstDirTree->uiExtent * BISO_SECTOR_SIZE)
+ ((ULONG)pstCurrent - (ULONG)pucBuf);
pstPre = pstNew;
}
else
{
/* 对于子目录在这里更新目录的Rock Ridge扩展信息 */
if ((BOOL_TRUE != BISO_9660_IS_CURRENT(pstCurrent)) &&
(BOOL_TRUE != BISO_9660_IS_PARENT(pstCurrent)))
{
/*
* 这里首先按照Path Table里记录的子目录顺序来判断, 如果是就不用搜索了
* 如果不是则再从子目录列表中查询.
* 这里实际上取决于:
* Path Table里的子目录记录和Directory Record里面的子目录记录顺序是否一致!!!!
* 绝大多数情况下都是按照字母顺序,两者是一致的, 所以BISO_9660_FindChild一般情况下
* 是不会调用的
*/
if (pstChild->uiExtent == pstCurrent->uiExtent)
{
pstNew = pstChild;
pstChild = pstChild->pstNext;
}
else
{
pstNew = BISO_9660_FindChild(pstDirTree, pstCurrent->uiExtent);
}
if (NULL != pstNew)
{
(VOID)BISO_RRIP_ReadExtInfo(pstFile, pstParser, pstCurrent, pstNew);
}
}
}
uiTotSize += pstCurrent->ucLength;
pstCurrent = (BISO_DIR_RECORD_S *)(pucBuf + uiTotSize);
/*
* !!!!!!!!!!!!!!!!!!!!!!!!
* ISO-9660规定Directory Record记录不能跨逻辑块，所以如果一个逻辑块的最后
* 一段区域不够保存一个Directory Record的话这段区域就会废弃(填0)
*/
if (0 == pstCurrent->ucLength)
{
uiTail = BISO_BLOCK_SIZE - (uiTotSize % BISO_BLOCK_SIZE);
uiTotSize += uiTail;
pstCurrent = (BISO_DIR_RECORD_S *)((UCHAR *)pstCurrent + uiTail);
}
}
BISO_FREE(pucBuf);
return BISO_SUCCESS;
}
/* 通过PathTable构建目录树(只包含目录)
这里利用Path Table，因此超过65535个文件夹的ISO文件只能读取前 65535个目录里的内容 */
STATIC ULONG BISO_9660_BuildPathTree
(
IN BISO_FILE_S *pstFile,
INOUT BISO_PARSER_S *pstParser,
OUT UINT *puiTotDirNum
)
{
UINT uiTotDirNum = 0;
UINT uiPathTblId = 1;
BISO_QUEUE_S *pstQueue = NULL;
BISO_DIR_TREE_S *pstNew = NULL;
BISO_DIR_TREE_S *pstPre = NULL;
BISO_DIR_TREE_S *pstDirTree = NULL;
BISO_PATH_TABLE_S *pstPathTable = NULL;
DBGASSERT(NULL != pstFile);
DBGASSERT(NULL != pstParser);
DBGASSERT(NULL != puiTotDirNum);
/*
* ISO-9660规定的Path Table的顺序实际上是文件树的一个广度优先遍历的形式
* 而处理广度优先遍历时一般需要一个先进先出的队列结构，这里创建一个使用
*/
pstQueue = BISO_QUEUE_Create();
if (NULL == pstQueue)
{
return BISO_ERR_ALLOC_MEM;
}
/* ROOT根目录 */
pstPathTable = (BISO_PATH_TABLE_S *)(pstParser->pucPathTable);
pstDirTree = &(pstParser->stDirTree);
pstDirTree->uiPathTblId = 1;
pstDirTree->uiExtent = pstPathTable->uiExtent;
/* 申请统计信息的节点 */
pstDirTree->pstDirStat = (BISO_DIR_STAT_S *)BISO_ZALLOC(sizeof(BISO_DIR_STAT_S));
if (NULL == pstDirTree->pstDirStat)
{
return BISO_ERR_ALLOC_MEM;
}
/* 先把ROOT入队列 */
BISO_QUEUE_Push(pstQueue, pstDirTree);
pstPathTable = (BISO_PATH_TABLE_S *)((UCHAR *)pstPathTable + BISO_9660_PATH_LEN(pstPathTable));
/* 依次处理队列中的每一项直到队列读空 */
while (NULL != (pstDirTree = (BISO_DIR_TREE_S *)BISO_QUEUE_PopHead(pstQueue)))
{
/* 把该目录下的所有一级子目录读出来入队列 */
while ((USHORT)pstDirTree->uiPathTblId == pstPathTable->usParentDirNum)
{
/* 申请内存用于保存目录节点 */
pstNew = (BISO_DIR_TREE_S *)BISO_ZALLOC(sizeof(BISO_DIR_TREE_S));
if (NULL == pstNew)
{
BISO_QUEUE_Destroy(pstQueue);
return BISO_ERR_ALLOC_MEM;
}
/* 目录节点属性赋值 */
BISO_UTIL_CopyStr(pstPathTable->szDirName, pstPathTable->ucDirNameLen, pstNew->szName);
pstNew->uiExtent = pstPathTable->uiExtent;
pstNew->usNameLen = (USHORT)strlen(pstNew->szName);
pstNew->uiPathTblId = (++uiPathTblId);
/* 申请统计信息的节点 */
pstNew->pstDirStat = (BISO_DIR_STAT_S *)BISO_ZALLOC(sizeof(BISO_DIR_STAT_S));
if (NULL == pstNew->pstDirStat)
{
BISO_QUEUE_Destroy(pstQueue);
return BISO_ERR_ALLOC_MEM;
}
/* 挂接到父目录下 */
if (NULL == pstDirTree->pstChild)
{
pstDirTree->pstChild = pstNew;
}
else
{
pstPre->pstNext = pstNew;
}
pstNew->pstParent = pstDirTree;
pstPre = pstNew;
pstDirTree->pstDirStat->uiCurDirNum++;
uiTotDirNum++;
BISO_QUEUE_Push(pstQueue, pstNew);
pstPathTable = (BISO_PATH_TABLE_S *)((UCHAR *)pstPathTable + BISO_9660_PATH_LEN(pstPathTable));
}
}
*puiTotDirNum = uiTotDirNum;
BISO_QUEUE_Destroy(pstQueue);
return BISO_SUCCESS;
}
/* 更新整个目录树的目录结构中文件总数、目录总数、总空间大小等信息 */
ULONG BISO_9660_UpdateTreeStat(INOUT BISO_DIR_TREE_S *pstRoot)
{
VOID *pData = NULL;
BISO_QUEUE_S *pstQueue = NULL;
BISO_DIR_TREE_S *pstCurDir = NULL;
BISO_DIR_STAT_S *pstDirStat = NULL;
BISO_DIR_STAT_S *pstPreDirStat = NULL;
DBGASSERT(NULL != pstRoot);
pstQueue = BISO_QUEUE_Create();
if (NULL == pstQueue)
{
return BISO_ERR_ALLOC_MEM;
}
/* 构建DFS栈 */
BISO_9660_FillDfsStack(pstRoot, pstQueue);
/* 依次弹栈处理 */
while (NULL != (pData = BISO_QUEUE_PopTail(pstQueue)))
{
pstCurDir = (BISO_DIR_TREE_S *)pData;
pstDirStat = pstCurDir->pstDirStat;
/* 更新自己和父节点 */
pstDirStat->uiTotDirNum += pstDirStat->uiCurDirNum;
pstDirStat->uiTotFileNum += pstDirStat->uiCurFileNum;
pstDirStat->uiTotLinkNum += pstDirStat->uiCurLinkNum;
pstDirStat->ui64TotSpace += pstDirStat->ui64CurSpace;
pstDirStat->uiTotUsedSec += pstDirStat->uiCurUsedSec;
if (NULL != pstCurDir->pstParent) /* ROOT节点没有父节点 */
{
pstPreDirStat = pstCurDir->pstParent->pstDirStat;
pstPreDirStat->uiTotDirNum += pstDirStat->uiTotDirNum;
pstPreDirStat->uiTotFileNum += pstDirStat->uiTotFileNum;
pstPreDirStat->uiTotLinkNum += pstDirStat->uiCurLinkNum;
pstPreDirStat->ui64TotSpace += pstDirStat->ui64TotSpace;
pstPreDirStat->uiTotUsedSec += pstDirStat->uiTotUsedSec;
}
}
/* 销毁堆栈 */
BISO_QUEUE_Destroy(pstQueue);
return BISO_SUCCESS;
}
ULONG BISO_9660_UpdateNodeStat
(
IN BOOL_T bAdd,
IN CONST BISO_DIR_TREE_S *pstCurNode,
INOUT BISO_DIR_TREE_S *pstParent
)
{
UINT uiSecNum = 0;
BISO_DIR_TREE_S *pstCurDir = NULL;
BISO_DIR_STAT_S *pstCurStat = NULL;
BISO_DIR_STAT_S *pstPreStat = NULL;
BISO_DIR_STAT_S stExDirStat;
DBGASSERT(NULL != pstCurNode);
memset(&stExDirStat, 0, sizeof(stExDirStat));
pstPreStat = pstParent->pstDirStat;
if (NULL == pstCurNode->pstDirStat) /* 非目录 */
{
if (BOOL_TRUE == BISO_DIR_TREE_IS_SYMLINK(pstCurNode)) /* 符号链接 */
{
/* 更新当前目录链接数统计, 大小为0不用更新 */
BISO_STAT_UPDATE(bAdd, pstPreStat->uiCurLinkNum, 1);
stExDirStat.uiTotLinkNum = 1;
}
else
{
/* 更新当前目录的文件数,大小等 */
uiSecNum = BISO_USED_SECTOR_NUM(pstCurNode->uiSize);
BISO_STAT_UPDATE(bAdd, pstPreStat->uiCurFileNum, 1);
BISO_STAT_UPDATE(bAdd, pstPreStat->uiCurUsedSec, uiSecNum);
BISO_STAT_UPDATE(bAdd, pstPreStat->ui64CurSpace, pstCurNode->uiSize);
stExDirStat.uiTotFileNum = 1;
stExDirStat.ui64TotSpace = pstCurNode->uiSize;
stExDirStat.uiTotUsedSec = uiSecNum;
}
}
else
{
pstCurStat = pstCurNode->pstDirStat;
BISO_STAT_UPDATE(bAdd, pstPreStat->uiCurDirNum, 1); /* Current只需更新目录数 */
BISO_STAT_UPDATE(bAdd, pstPreStat->uiTotDirNum, pstCurStat->uiTotDirNum);
BISO_STAT_UPDATE(bAdd, pstPreStat->uiTotFileNum, pstCurStat->uiTotFileNum);
BISO_STAT_UPDATE(bAdd, pstPreStat->uiTotLinkNum, pstCurStat->uiTotLinkNum);
BISO_STAT_UPDATE(bAdd, pstPreStat->ui64TotSpace, pstCurStat->ui64TotSpace);
BISO_STAT_UPDATE(bAdd, pstPreStat->uiTotUsedSec, pstCurStat->uiTotUsedSec);
memcpy(&stExDirStat, pstCurStat, sizeof(stExDirStat)); /* 只会用到Total部分,不用Current部分 */
}
/* 依次更新上层目录的Total部分 */
pstCurDir = pstParent->pstParent;
while (NULL != pstCurDir)
{
pstCurStat = pstCurDir->pstDirStat;
BISO_STAT_UPDATE(bAdd, pstCurStat->uiTotDirNum, stExDirStat.uiTotDirNum);
BISO_STAT_UPDATE(bAdd, pstCurStat->uiTotFileNum, stExDirStat.uiTotFileNum);
BISO_STAT_UPDATE(bAdd, pstCurStat->uiTotLinkNum, stExDirStat.uiTotLinkNum);
BISO_STAT_UPDATE(bAdd, pstCurStat->ui64TotSpace, stExDirStat.ui64TotSpace);
BISO_STAT_UPDATE(bAdd, pstCurStat->uiTotUsedSec, stExDirStat.uiTotUsedSec);
pstCurDir = pstCurDir->pstParent;
}
return BISO_SUCCESS;
}
ULONG BISO_9660_BuildFileTreeByTable
(
IN BISO_FILE_S *pstFile,
OUT BISO_PARSER_S *pstParser
)
{
ULONG ulRet;
UINT uiTotDirNum = 0;
BISO_QUEUE_S *pstQueue = NULL;
BISO_DIR_TREE_S *pstDirTree = NULL;
DBGASSERT(NULL != pstFile);
DBGASSERT(NULL != pstParser);
/* 先通过Path Table构建目录树(不包含文件) */
ulRet = BISO_9660_BuildPathTree(pstFile, pstParser, &uiTotDirNum);
if (BISO_SUCCESS != ulRet)
{
return ulRet;
}
/* 构建每一个目录下的文件列表 */
/* 创建队列用于递归遍历 */
pstQueue = BISO_QUEUE_Create();
if (NULL == pstQueue)
{
return BISO_ERR_ALLOC_MEM;
}
/* ROOT目录入队列 */
BISO_QUEUE_Push(pstQueue, &(pstParser->stDirTree));
/* 循环依次构建 */
while (NULL != (pstDirTree = (BISO_DIR_TREE_S *)BISO_QUEUE_PopHead(pstQueue)))
{
/* 构建文件列表 */
ulRet = BISO_9660_BuildFileList(pstFile, pstParser, pstDirTree);
if (BISO_SUCCESS != ulRet)
{
BISO_DIAG("Failed to build file list for dir %s.", pstDirTree->szName);
BISO_QUEUE_Destroy(pstQueue);
return ulRet;
}
/* 子目录入队列 */
if (NULL != pstDirTree->pstChild)
{
BISO_QUEUE_Push(pstQueue, pstDirTree->pstChild);
}
/* 下一个相邻目录入队列 */
if (NULL != pstDirTree->pstNext)
{
BISO_QUEUE_Push(pstQueue, pstDirTree->pstNext);
}
}
BISO_QUEUE_Destroy(pstQueue);
return BISO_SUCCESS;
}
ULONG BISO_9660_BuildFileTreeRecursively
(
IN BISO_FILE_S *pstFile,
OUT BISO_PARSER_S *pstParser
)
{
UINT uiTail = 0;
UINT uiTotSize = 0;
UINT uiBufSize = 0;
UCHAR *pucBuf = NULL;
BISO_QUEUE_S *pstQueue = NULL;
BISO_DIR_TREE_S *pstNew = NULL;
BISO_DIR_TREE_S *pstPreDir = NULL;
BISO_DIR_TREE_S *pstPreFile = NULL;
BISO_DIR_TREE_S *pstDirTree = NULL;
BISO_DIR_RECORD_S *pstCurrent = NULL;
DBGASSERT(NULL != pstFile);
DBGASSERT(NULL != pstParser);
/* 先对ROOT进行处理 */
pstDirTree = &(pstParser->stDirTree);
pstDirTree->uiPathTblId = 1;
pstDirTree->uiExtent = pstParser->pstPVD->stRootDirRecord.uiExtent;
/* 申请统计信息的内存 */
pstDirTree->pstDirStat = (BISO_DIR_STAT_S *)BISO_ZALLOC(sizeof(BISO_DIR_STAT_S));
if (NULL == pstDirTree->pstDirStat)
{
return BISO_ERR_ALLOC_MEM;
}
/* 创建堆栈,同时ROOT入栈 */
pstQueue = BISO_QUEUE_Create();
BISO_QUEUE_Push(pstQueue, pstDirTree);
while (NULL != (pstDirTree = (BISO_DIR_TREE_S *)BISO_QUEUE_PopHead(pstQueue)))
{
uiTotSize = 0;
pstPreDir = NULL;
pstPreFile = NULL;
pstDirTree->uiPathTblId = BISO_UINT_MAX;
/* 读取Directory Record记录 */
pucBuf = BISO_9660_ReadDirRecord(pstFile, pstDirTree->uiExtent, &uiBufSize);
if (NULL == pucBuf)
{
BISO_QUEUE_Destroy(pstQueue);
return BISO_ERR_ALLOC_MEM;
}
pstCurrent = (BISO_DIR_RECORD_S *)pucBuf;
while (uiTotSize < uiBufSize)
{
if (BOOL_TRUE == BISO_DIR_RECORD_IS_PATH(pstCurrent))
{
if ((BOOL_TRUE != BISO_9660_IS_CURRENT(pstCurrent)) &&
(BOOL_TRUE != BISO_9660_IS_PARENT(pstCurrent)))
{
/* 创建新目录节点 */
pstNew = BISO_9660_CreateDirNode(pstFile, pstParser, pstCurrent, pstPreDir, pstDirTree);
if (NULL == pstNew)
{
BISO_FREE(pucBuf);
BISO_QUEUE_Destroy(pstQueue);
return BISO_ERR_ALLOC_MEM;
}
pstPreDir = pstNew;
/* 新目录入栈 */
BISO_QUEUE_Push(pstQueue, pstNew);
}
}
else
{
pstNew = BISO_9660_CreateFileNode(pstFile, pstParser, pstCurrent, pstPreFile, pstDirTree);
if (NULL == pstNew)
{
BISO_FREE(pucBuf);
BISO_QUEUE_Destroy(pstQueue);
return BISO_ERR_ALLOC_MEM;
}
pstNew->ui64FileRecordOffset = (UINT64)((UINT64)pstDirTree->uiExtent * BISO_SECTOR_SIZE)
+ ((ULONG)pstCurrent - (ULONG)pucBuf);
pstPreFile = pstNew;
}
uiTotSize += pstCurrent->ucLength;
pstCurrent = (BISO_DIR_RECORD_S *)(pucBuf + uiTotSize);
/*
* !!!!!!!!!!!!!!!!!!!!!!!!
* ISO-9660规定Directory Record记录不能跨逻辑块，所以如果一个逻辑块的最后
* 一段区域不够保存一个Directory Record的话这段区域就会废弃(填0)
*/
if (0 == pstCurrent->ucLength)
{
uiTail = BISO_BLOCK_SIZE - (uiTotSize % BISO_BLOCK_SIZE);
uiTotSize += uiTail;
pstCurrent = (BISO_DIR_RECORD_S *)((UCHAR *)pstCurrent + uiTail);
}
}
BISO_FREE(pucBuf);
}
BISO_QUEUE_Destroy(pstQueue);
return BISO_SUCCESS;
}
ULONG BISO_9660_BuildSVDFileTreeRecursively
(
IN BISO_FILE_S *pstFile,
OUT BISO_PARSER_S *pstParser
)
{
UINT uiTail = 0;
UINT uiTotSize = 0;
UINT uiBufSize = 0;
UCHAR *pucBuf = NULL;
BISO_QUEUE_S *pstQueue = NULL;
BISO_SVD_DIR_TREE_S *pstNew = NULL;
BISO_SVD_DIR_TREE_S *pstPreDir = NULL;
BISO_SVD_DIR_TREE_S *pstPreFile = NULL;
BISO_SVD_DIR_TREE_S *pstDirTree = NULL;
BISO_DIR_RECORD_S *pstCurrent = NULL;
DBGASSERT(NULL != pstFile);
DBGASSERT(NULL != pstParser);
/* 先对ROOT进行处理 */
pstDirTree = &(pstParser->stSVDDirTree);
pstDirTree->uiExtent = pstParser->pstSVD->stRootDirRecord.uiExtent;
/* 创建堆栈,同时ROOT入栈 */
pstQueue = BISO_QUEUE_Create();
BISO_QUEUE_Push(pstQueue, pstDirTree);
while (NULL != (pstDirTree = (BISO_SVD_DIR_TREE_S *)BISO_QUEUE_PopHead(pstQueue)))
{
uiTotSize = 0;
pstPreDir = NULL;
pstPreFile = NULL;
/* 读取Directory Record记录 */
pucBuf = BISO_9660_ReadDirRecord(pstFile, pstDirTree->uiExtent, &uiBufSize);
if (NULL == pucBuf)
{
BISO_QUEUE_Destroy(pstQueue);
return BISO_ERR_ALLOC_MEM;
}
pstCurrent = (BISO_DIR_RECORD_S *)pucBuf;
while (uiTotSize < uiBufSize)
{
if (BOOL_TRUE == BISO_DIR_RECORD_IS_PATH(pstCurrent))
{
if ((BOOL_TRUE != BISO_9660_IS_CURRENT(pstCurrent)) &&
(BOOL_TRUE != BISO_9660_IS_PARENT(pstCurrent)))
{
/* 创建新目录节点 */
pstNew = BISO_9660_CreateSVDDirNode(pstFile, pstParser, pstCurrent, pstPreDir, pstDirTree);
if (NULL == pstNew)
{
BISO_FREE(pucBuf);
BISO_QUEUE_Destroy(pstQueue);
return BISO_ERR_ALLOC_MEM;
}
pstPreDir = pstNew;
/* 新目录入栈 */
BISO_QUEUE_Push(pstQueue, pstNew);
}
}
else
{
pstNew = BISO_9660_CreateSVDFileNode(pstFile, pstParser, pstCurrent, pstPreFile, pstDirTree);
if (NULL == pstNew)
{
BISO_FREE(pucBuf);
BISO_QUEUE_Destroy(pstQueue);
return BISO_ERR_ALLOC_MEM;
}
pstNew->ui64FileRecordOffset = (UINT64)((UINT64)pstDirTree->uiExtent * BISO_SECTOR_SIZE)
+ ((ULONG)pstCurrent - (ULONG)pucBuf);
pstPreFile = pstNew;
}
uiTotSize += pstCurrent->ucLength;
pstCurrent = (BISO_DIR_RECORD_S *)(pucBuf + uiTotSize);
/*
* !!!!!!!!!!!!!!!!!!!!!!!!
* ISO-9660规定Directory Record记录不能跨逻辑块，所以如果一个逻辑块的最后
* 一段区域不够保存一个Directory Record的话这段区域就会废弃(填0)
*/
if (0 == pstCurrent->ucLength)
{
uiTail = BISO_BLOCK_SIZE - (uiTotSize % BISO_BLOCK_SIZE);
uiTotSize += uiTail;
pstCurrent = (BISO_DIR_RECORD_S *)((UCHAR *)pstCurrent + uiTail);
}
}
BISO_FREE(pucBuf);
}
BISO_QUEUE_Destroy(pstQueue);
return BISO_SUCCESS;
}
VOID BISO_9660_FreeDirTree(IN BISO_PARSER_S *pstParser)
{
BISO_QUEUE_S *pstQueue = NULL;
BISO_DIR_TREE_S *pstRoot = NULL;
BISO_DIR_TREE_S *pstCurDir = NULL;
BISO_DIR_TREE_S *pstPre = NULL;
BISO_DIR_TREE_S *pstNext = NULL;
if (NULL == pstParser)
{
return;
}
/* 创建队列 */
pstQueue = BISO_QUEUE_Create();
if (NULL == pstQueue)
{
return;
}
pstRoot = &pstParser->stDirTree;
/* 构建文件树入栈 */
BISO_9660_FillDfsStack(pstRoot, pstQueue);
/* 不需要释放ROOT,把它从队列头弹出来 */
BISO_QUEUE_PopHead(pstQueue);
/* 依次释放各个节点 */
while (NULL != (pstCurDir = (BISO_DIR_TREE_S *)BISO_QUEUE_PopTail(pstQueue)))
{
/* 释放当前目录的文件列表 */
for (pstPre = pstCurDir->pstFileList; NULL != pstPre; pstPre = pstNext)
{
pstNext = pstPre->pstNext;
BISO_9600_FREE_DIRTREE(pstPre);
}
/* 释放自己 */
BISO_9600_FREE_DIRTREE(pstCurDir);
}
/* 释放ROOT目录的文件列表 */
for (pstPre = pstRoot->pstFileList; NULL != pstPre; pstPre = pstNext)
{
pstNext = pstPre->pstNext;
BISO_9600_FREE_DIRTREE(pstPre);
}
/* 释放ROOT自己的扩展信息,但不释放自己本身 */
BISO_9600_FREE_STAT(pstRoot);
BISO_9600_FREE_POSIX(pstRoot);
/* 销毁队列 */
BISO_QUEUE_Destroy(pstQueue);
}
VOID BISO_9660_FreeSVDDirTree(IN BISO_PARSER_S *pstParser)
{
BISO_QUEUE_S *pstQueue = NULL;
BISO_SVD_DIR_TREE_S *pstRoot = NULL;
BISO_SVD_DIR_TREE_S *pstCurDir = NULL;
BISO_SVD_DIR_TREE_S *pstPre = NULL;
BISO_SVD_DIR_TREE_S *pstNext = NULL;
if (NULL == pstParser ||
0 == pstParser->stSVDDirTree.uiExtent ||
0 == pstParser->stSVDDirTree.uiSize)
{
return;
}
/* 创建队列 */
pstQueue = BISO_QUEUE_Create();
if (NULL == pstQueue)
{
return;
}
pstRoot = &pstParser->stSVDDirTree;
/* 构建文件树入栈 */
BISO_9660_FillDfsStack((BISO_DIR_TREE_S *)pstRoot, pstQueue);
/* 不需要释放ROOT,把它从队列头弹出来 */
BISO_QUEUE_PopHead(pstQueue);
/* 依次释放各个节点 */
while (NULL != (pstCurDir = (BISO_SVD_DIR_TREE_S *)BISO_QUEUE_PopTail(pstQueue)))
{
/* 释放当前目录的文件列表 */
for (pstPre = pstCurDir->pstFileList; NULL != pstPre; pstPre = pstNext)
{
pstNext = pstPre->pstNext;
BISO_FREE(pstPre);
}
/* 释放自己 */
BISO_FREE(pstCurDir);
}
/* 释放ROOT目录的文件列表 */
for (pstPre = pstRoot->pstFileList; NULL != pstPre; pstPre = pstNext)
{
pstNext = pstPre->pstNext;
BISO_FREE(pstPre);
}
/* 销毁队列 */
BISO_QUEUE_Destroy(pstQueue);
}
BISO_PARSER_S * BISO_9660_CreateParser(VOID)
{
BISO_PARSER_S *pstParser = NULL;
pstParser = (BISO_PARSER_S *)BISO_ZALLOC(sizeof(BISO_PARSER_S));
if (NULL == pstParser)
{
return NULL;
}
/* 初始化链表 */
BISO_DLL_Init(&(pstParser->stVDList));
return pstParser;
}
VOID BISO_9660_CleanParser(INOUT BISO_PARSER_S *pstParser)
{
if (NULL == pstParser)
{
return;
}
/* 释放Volume Descriptor链表 */
BISO_DLL_Free(&(pstParser->stVDList));
/* 释放Path Table */
if (NULL != pstParser->pucPathTable)
{
BISO_FREE(pstParser->pucPathTable);
}
/* 释放 El Torito数据 */
if (NULL != pstParser->pucElToritoEntry)
{
BISO_FREE(pstParser->pucElToritoEntry);
}
/* 释放文件树 */
BISO_9660_FreeDirTree(pstParser);
BISO_9660_FreeSVDDirTree(pstParser);
}
VOID BISO_9660_DestroyParser(INOUT BISO_PARSER_S *pstParser)
{
if (NULL == pstParser)
{
return;
}
/* 清理解析器 */
BISO_9660_CleanParser(pstParser);
/* 释放解析器自己 */
BISO_FREE(pstParser);
}
ULONG BISO_9660_OpenImage
(
IN BOOL_T bParseSVDDirTree,
IN CONST CHAR *pcFileName,
OUT BISO_PARSER_S *pstParser
)
{
UINT64 ui64FileSize = 0;
ULONG ulRet = BISO_SUCCESS;
BISO_FILE_S *pstFile = NULL;
if ((NULL == pcFileName) || (NULL == pstParser))
{
return BISO_ERR_NULL_PTR;
}
/* 先看文件大小，过小的文件不可能是ISO文件 */
ui64FileSize = BISO_PLAT_GetFileSize(pcFileName);
if (ui64FileSize < BISO_SYSTEM_AREA_SIZE + sizeof(BISO_PVD_S))
{
BISO_DIAG("File len %llu is too small.", (ULONGLONG)ui64FileSize);
return BISO_ERR_INVALID_ISO9660;
}
/* 如果已有数据则先清空 */
if (NULL != pstParser->pstPVD)
{
BISO_9660_CleanParser(pstParser);
}
/* 打开ISO文件 */
pstFile = BISO_PLAT_OpenExistFile(pcFileName);
if (NULL == pstFile)
{
BISO_DIAG("Failed to open file %s.", pcFileName);
return BISO_ERR_OPEN_FILE;
}
scnprintf(pstParser->szFileName, sizeof(pstParser->szFileName), "%s", pcFileName);
/* 读取Volume Description信息 */
ulRet = BISO_9660_ReadVD(pstFile, pstParser);
BISO_9660_CHECK_RET(ulRet, pstFile);
/* 读取Path Table */
ulRet = BISO_9660_ReadPathTable(pstFile, pstParser);
BISO_9660_CHECK_RET(ulRet, pstFile);
/* 读取BOOT启动信息 */
ulRet = BISO_ELTORITO_ReadBootInfo(pstFile, pstParser);
BISO_9660_CHECK_RET(ulRet, pstFile);
/* 读取Rock Ridge扩展标识 */
ulRet = BISO_RRIP_ReadIndicator(pstParser);
BISO_9660_CHECK_RET(ulRet, pstFile);
/* 这里构建文件树有两种方法可供选择, 暂时选择从ROOT递归创建的方法 */
#if 0
/* 从ISO文件中读取整个文件树, 这里选择根据Path Table构建 */
ulRet += BISO_9660_BuildFileTreeByTable(pstFile, pstParser);
BISO_9660_CHECK_RET(ulRet, pstFile);
#else
/* 从ISO文件中读取整个文件树, 这里选择从ROOT开始递归构建 */
ulRet = BISO_9660_BuildFileTreeRecursively(pstFile, pstParser);
BISO_9660_CHECK_RET(ulRet, pstFile);
#endif /* #if 0 */
if (bParseSVDDirTree && pstParser->pstSVD)
{
ulRet = BISO_9660_BuildSVDFileTreeRecursively(pstFile, pstParser);
BISO_9660_CHECK_RET(ulRet, pstFile);
}
/* 更新目录结构里的统计信息 */
ulRet = BISO_9660_UpdateTreeStat(&(pstParser->stDirTree));
BISO_9660_CHECK_RET(ulRet, pstFile);
BISO_PLAT_CloseFile(pstFile);
return BISO_SUCCESS;
}
ULONG BISO_9660_ParseDate84261
(
IN CONST CHAR *pcDate,
OUT BISO_DATE_S *pstDate
)
{
INT aiBuf[7] = { 0 };
if ((NULL == pcDate) || (NULL == pstDate))
{
return BISO_ERR_NULL_PTR;
}
/*
* ECMA-119 8.4.26.1节定义的日期格式，共17个字节
* 前16个字节是字符，第17个字节是有符号整数
* 如果前16个字节是字符'0', 最后一个是'\0'则表示时间无效
* 形如 "2014122013000500*"
*/
if ((0 == pcDate[0]) || (' ' == pcDate[0]) || ('0' == pcDate[0]))
{
return BISO_ERR_NOT_RECORD;
}
sscanf(pcDate, "%4d%2d%2d%2d%2d%2d%2d",
aiBuf + 0, aiBuf + 1, aiBuf + 2,
aiBuf + 3, aiBuf + 4, aiBuf + 5, aiBuf + 6);
pstDate->usYear = (USHORT)aiBuf[0];
pstDate->ucMonth = (UCHAR)aiBuf[1];
pstDate->ucDay = (UCHAR)aiBuf[2];
pstDate->ucHour = (UCHAR)aiBuf[3];
pstDate->ucMin = (UCHAR)aiBuf[4];
pstDate->ucSecond = (UCHAR)aiBuf[5];
pstDate->usMillSec = (UCHAR)(aiBuf[6] * 10); /* 表示百分之一秒 */
/* 第17字节表示时区信息, 15分钟为1个单位，4个单位就是1个时区 */
pstDate->cZone = pcDate[16] / 4;
return BISO_SUCCESS;
}
VOID BISO_9660_FmtDate84261(IN time_t ulTime, IN UINT uiBufSize, OUT CHAR *pcDate)
{
INT iTimeZone = BISO_UTIL_GetTimeZone();
struct tm *pstTm = NULL;
if (NULL != pcDate)
{
pstTm = localtime(&ulTime);
scnprintf(pcDate, uiBufSize, "%04d%02d%02d%02d%02d%02d%02d",
pstTm->tm_year + 1900,
pstTm->tm_mon + 1,
pstTm->tm_mday,
pstTm->tm_hour,
pstTm->tm_min,
pstTm->tm_sec,
0);
/* 第17个字节记录当前时区 */
pcDate[16] = (CHAR)(4 * iTimeZone);
}
}
Reference in New Issue View Git Blame Copy Permalink