1 // Copyright 2014 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7 #include "../../../include/fpdfapi/fpdf_module.h"
8 #include "../../../include/fpdfapi/fpdf_resource.h"
9 #include "../../../include/fxcodec/fx_codec.h"
10 #include "font_int.h"
11 #ifndef _FPDFAPI_MINI_
12 typedef struct {
13 FXSYS_FILE* m_pFile;
14 int m_nFiles;
15 int m_IndexSize;
16 int m_IndexOffset;
17 } FXFC_PACKAGE;
FXFC_LoadPackage(FX_LPCSTR name)18 FX_LPVOID FXFC_LoadPackage(FX_LPCSTR name)
19 {
20 FXSYS_FILE* file = FXSYS_fopen(name, (FX_LPCSTR)"rb");
21 if (file == NULL) {
22 return NULL;
23 }
24 FX_BYTE buf[256];
25 size_t read = FXSYS_fread(buf, 1, 20, file);
26 if (*(FX_DWORD*)buf != 0x43465846) {
27 FXSYS_fclose(file);
28 return NULL;
29 }
30 FXFC_PACKAGE* pPackage = FX_Alloc(FXFC_PACKAGE, 1);
31 pPackage->m_pFile = file;
32 pPackage->m_nFiles = *(int*)(buf + 8);
33 pPackage->m_IndexSize = *(int*)(buf + 12);
34 pPackage->m_IndexOffset = *(int*)(buf + 16);
35 return pPackage;
36 }
FXFC_ClosePackage(FX_LPVOID p)37 void FXFC_ClosePackage(FX_LPVOID p)
38 {
39 FXFC_PACKAGE* pPackage = (FXFC_PACKAGE*)p;
40 FXSYS_fclose(pPackage->m_pFile);
41 FX_Free(pPackage);
42 }
FXFC_LoadFile(FX_LPVOID p,FX_LPCSTR name,FX_LPBYTE & pBuffer,FX_DWORD & size)43 FX_BOOL FXFC_LoadFile(FX_LPVOID p, FX_LPCSTR name, FX_LPBYTE& pBuffer, FX_DWORD& size)
44 {
45 FXFC_PACKAGE* pPackage = (FXFC_PACKAGE*)p;
46 FXSYS_fseek(pPackage->m_pFile, pPackage->m_IndexOffset, FXSYS_SEEK_SET);
47 FX_BYTE buf[128];
48 size_t read = 0;
49 for (int i = 0; i < pPackage->m_nFiles; i ++) {
50 read = FXSYS_fread(buf, pPackage->m_IndexSize, 1, pPackage->m_pFile);
51 if (FXSYS_stricmp((FX_LPCSTR)buf, name) == 0) {
52 FX_DWORD offset = *(FX_DWORD*)&buf[64];
53 size = *(FX_DWORD*)&buf[68];
54 pBuffer = FX_Alloc(FX_BYTE, size);
55 FXSYS_fseek(pPackage->m_pFile, offset, FXSYS_SEEK_SET);
56 read = FXSYS_fread(pBuffer, size, 1, pPackage->m_pFile);
57 if (buf[72]) {
58 FX_DWORD orig_size;
59 FX_LPBYTE comp_buf = pBuffer;
60 CPDF_ModuleMgr::Get()->GetFlateModule()->FlateOrLZWDecode(FALSE, comp_buf, size, FALSE,
61 0, 0, 0, 0, 0, pBuffer, orig_size);
62 FX_Free(comp_buf);
63 size = orig_size;
64 }
65 return TRUE;
66 }
67 }
68 return FALSE;
69 }
LoadFile(FX_LPVOID pPackage,FX_LPCSTR fileid)70 FX_BOOL CPDF_FXMP::LoadFile(FX_LPVOID pPackage, FX_LPCSTR fileid)
71 {
72 if (m_pHeader) {
73 FX_Free(m_pHeader);
74 m_pHeader = NULL;
75 }
76 m_pTable = NULL;
77 FX_DWORD size;
78 if (!FXFC_LoadFile(pPackage, fileid, (FX_LPBYTE&)m_pHeader, size)) {
79 return FALSE;
80 }
81 if (FXSYS_memcmp32(m_pHeader, "FXMP", 4)) {
82 return FALSE;
83 }
84 m_pTable = (FX_LPBYTE)m_pHeader + m_pHeader->dwDataOffset;
85 return TRUE;
86 }
GetRecord(FX_DWORD index)87 FX_LPBYTE CPDF_FXMP::GetRecord(FX_DWORD index)
88 {
89 if (m_pTable == NULL) {
90 return NULL;
91 }
92 if ((int)index < (int)m_pHeader->dwStartIndex || index > m_pHeader->dwEndIndex) {
93 return NULL;
94 }
95 return m_pTable + (index - m_pHeader->dwStartIndex) * m_pHeader->dwRecordSize;
96 }
97 #endif
98