160 lines
3.6 KiB
C++
Executable File
160 lines
3.6 KiB
C++
Executable File
#include "precompiled.h"
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#include "XML.h"
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#include "CStr.h"
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#include "CLogger.h"
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#include "posix.h" // ptrdiff_t
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#include "res/vfs.h"
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#ifdef _MSC_VER
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# ifdef XERCES_STATIC_LIB
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# ifndef NDEBUG
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# pragma comment(lib, "xerces-c_2-static.lib")
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# else
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# pragma comment(lib, "xerces-c_2-static.lib")
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# endif // NDEBUG
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# else
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# ifndef NDEBUG
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# pragma comment(lib, "xerces-c_2D.lib")
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# else
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# pragma comment(lib, "xerces-c_2.lib")
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# endif // NDEBUG
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# endif // XERCES_STATIC_LIB
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#endif // _MSC_VER
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XERCES_CPP_NAMESPACE_USE
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CStr XMLTranscode(const XMLCh* xmltext)
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{
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char* str=XMLString::transcode((const XMLCh *)xmltext);
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CStr result(str);
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XMLString::release(&str);
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return result;
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}
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XMLCh *XMLTranscode(const char *str)
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{
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return XMLString::transcode(str);
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}
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int CVFSInputSource::OpenFile(const char *path)
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{
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debug_out("CVFSInputSource::OpenFile(): opening file %s.\n", path);
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m_hFile=vfs_open(path);
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if (m_hFile <= 0)
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{
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LOG(ERROR, "CVFSInputSource: file %s couldn't be opened (vfs_open: %lld)\n", path, m_hFile);
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return -1;
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}
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int err;
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if ((err=vfs_map(m_hFile, 0, m_pBuffer, m_BufferSize)) != 0)
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{
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LOG(ERROR, "CVFSInputSource: file %s couldn't be opened (vfs_map: %d)\n", path, err);
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vfs_close(m_hFile);
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m_hFile=0;
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return -1;
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}
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XMLCh *sysId=XMLString::transcode(path);
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setSystemId(sysId);
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XMLString::release(&sysId);
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return 0;
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}
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CVFSInputSource::~CVFSInputSource()
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{
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if (m_hFile > 0)
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{
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vfs_unmap(m_hFile);
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vfs_close(m_hFile);
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}
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}
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BinInputStream *CVFSInputSource::makeStream() const
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{
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if (m_hFile > 0)
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{
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return new BinMemInputStream((XMLByte *)m_pBuffer, (unsigned int)m_BufferSize,
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BinMemInputStream::BufOpt_Reference);
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}
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else
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return NULL;
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}
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#define IS_PATH_SEP(_chr) (_chr == '/' || _chr == '\\')
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// Return a pointer to the last path separator preceding *end, while not
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// going further back than *beginning
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const char *prevpathcomp(const char *end, const char *beginning)
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{
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do
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end--;
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while (end > beginning && !IS_PATH_SEP(*end));
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return end;
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}
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InputSource *CVFSEntityResolver::resolveEntity(const XMLCh *const publicId,
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const XMLCh *const systemId)
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{
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CVFSInputSource *ret=new CVFSInputSource();
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char *path=XMLString::transcode(systemId);
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char *orgpath=path;
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char abspath[VFS_MAX_PATH];
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const char *end=strchr(m_DocName, '\0');
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// Remove one path component for each opening ../ (or ..\)
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// Note that this loop will stop when all path components from the
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// document name have been stripped - the resulting path will be invalid, but
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// so was the input path.
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// Also note that this will not handle ../ path components in the middle of
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// the input path.
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while (strncmp(path, "..", 2) == 0 && IS_PATH_SEP(path[2]) && end > m_DocName)
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{
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end=prevpathcomp(end, m_DocName);
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path += 3;
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}
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// The ../ loop has found opening ../'s
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if (path != orgpath)
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{
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// Remove one more path component
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if (end > m_DocName)
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end=prevpathcomp(end, m_DocName);
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// include one slash from suffix
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--path;
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const ptrdiff_t prefixlen=end-m_DocName;
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memcpy(abspath, m_DocName, prefixlen);
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strncpy(abspath+prefixlen, path, VFS_MAX_PATH-prefixlen);
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// strncpy might not have terminated, if path was too long
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abspath[VFS_MAX_PATH-1]=0;
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char *pos=abspath;
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if ((pos=strchr(pos, '\\')) != NULL)
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{
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LOG(WARNING, "While resolving XML entities for %s: path %s [%s] contains non-portable path separator \\", m_DocName, orgpath, abspath);
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do
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*pos='/';
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while ((pos=strchr(pos+1, '\\')) != NULL);
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}
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path=abspath;
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}
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if (ret->OpenFile(path)!=0)
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{
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delete ret;
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ret=NULL;
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}
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XMLString::release(&orgpath);
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return ret;
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}
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