原創(chuàng): 星戰(zhàn)紫輝 http://www.shnenglu.com/rawdata 2009-2-23 關(guān)鍵字: 打印 SPL EMF 文件格式 問(wèn)題： Windows的假脫機(jī)打印會(huì)在Windows\System32\spool\PRINERS目錄下生成.spl和.shd文件，其中的打印內(nèi) 容存貯在.spl文件中，但是.spl文件格式似乎未公開(kāi)，那么如何才能將未知的.spl文件剝離成.emf文件呢？ 首先，讓我們了解一下Windows打印機(jī)制: 這是微軟的官網(wǎng)的一副打印流程圖片:  其中ISV是應(yīng)用軟件接口，IHV是硬件接口，左邊是XP的打印模型，右邊是Vista最新的XPS打印模 型，但兩者可以互相轉(zhuǎn)換，具有良好的兼容性。不過(guò)，這里暫時(shí)只關(guān)心XP系統(tǒng)的打印過(guò)程。 網(wǎng)絡(luò)打印過(guò)程圖:  但是這些圖似乎還不夠詳細(xì)，那么請(qǐng)看下面一副：（摘錄于論文:《基于關(guān)鍵字匹配的打印數(shù)據(jù)截獲 系統(tǒng)》）:  基本的思路是: 打印過(guò)程發(fā)生時(shí),GDI模塊和打印驅(qū)動(dòng)(由打印機(jī)廠商提供)進(jìn)行基本的數(shù)據(jù)交換，在假 脫機(jī)設(shè)置環(huán)境下，生成打印機(jī)命令文件：.spl或.emf文件，作為一個(gè)打印池的作業(yè)，然后Windows后臺(tái)打印線 程處理打印作業(yè)，將數(shù)據(jù)文件送至打印機(jī)打印，打印完刪除該打印文件。 好，現(xiàn)在回到正題：.spl文件該如何剝離成.emf呢？看一個(gè)例子： 在WinHex中打開(kāi)一個(gè).spl文件:  參考: http://www.undocprint.org/formats/winspool/spl 中一些打印結(jié)構(gòu)的定義。 首先，.spl文件都是以0x00010000簽名開(kāi)頭，然后一個(gè)DWORD 是emf相關(guān)區(qū)的文件偏移，第3個(gè) DWORD是文檔描述字符串(UNICODE)的文件偏移,第4個(gè)DWORD 描述的是端口說(shuō)明字符串(UNICODE)。大 致結(jié)構(gòu)如下:  文件尾就是這個(gè)樣子:  當(dāng)定位到0x50的文件位置，讀取2個(gè)DWORD數(shù)據(jù)之后,就是.emf文件開(kāi)始了。.emf文件格式是公開(kāi)的，而 且非常簡(jiǎn)單，是一系列EMR_XXX開(kāi)口結(jié)構(gòu)的緊密排列，通常以EMR_HEADER(0x01)開(kāi)頭，以EMR_EOF (0x0E)結(jié)尾。其實(shí)我們根本沒(méi)有必要去解析.emf文件格式，Windows SDK有專門顯示.emf文件的API,3個(gè)函數(shù)就 搞定: HENHMETAFILE hEMF = GetEnhMetaFile("EMF_DumpOK.emf"); PlayEnhMetaFile (dc.m_hDC, hEMF, &rc) ; DeleteEnhMetaFile (hEMF) ; 然后.spl文件還有一些東西，我現(xiàn)在還沒(méi)有解析出來(lái)，但是.emf文件已經(jīng)剝離出來(lái)了，后面的可以先不理它。 然后，開(kāi)始寫程序嘍，因?yàn)楸容^簡(jiǎn)單，所以代碼有點(diǎn)隨便哦~~:) http://www.shnenglu.com/rawdata/ 星綻紫輝 程序截圖如下:  
1
2
3#include <windows.h>
4#include <winspool.h>
5#include <stdio.h>
6#include <locale.h>
7#include <tchar.h>
8#include <iostream>
9using namespace std;
10
11
12BOOL AnalyseFile(const char* pszFileName);
13
14void PFT(const char* pszInfo,DWORD dwData)
15   {
16 printf("%s: 0x%08X\n",pszInfo,dwData);
17 }
18
19void PFM(const char* pszInfo)
20{
21 printf("%s\n",pszInfo);
22}
23
24void UPFM(const wchar_t pszInfo[])
25{
26 wprintf(L"%s\n",pszInfo);
27}
28
29static char* ID_Func[] =
30{
31"EMR_HEADER",
32"EMR_POLYBEZIER",
33"EMR_POLYGON",
34"EMR_POLYLINE",
35"EMR_POLYBEZIERTO",
36"EMR_POLYLINETO",
37"EMR_POLYPOLYLINE",
38"EMR_POLYPOLYGON",
39"EMR_SETWINDOWEXTEX",
40"EMR_SETWINDOWORGEX",
41"EMR_SETVIEWPORTEXTEX",
42"EMR_SETVIEWPORTORGEX",
43"EMR_SETBRUSHORGEX",
44"EMR_EOF",
45"EMR_SETPIXELV",
46"EMR_SETMAPPERFLAGS",
47"EMR_SETMAPMODE",
48"EMR_SETBKMODE",
49"EMR_SETPOLYFILLMODE",
50"EMR_SETROP2",
51"EMR_SETSTRETCHBLTMODE",
52"EMR_SETTEXTALIGN",
53"EMR_SETCOLORADJUSTMENT",
54"EMR_SETTEXTCOLOR",
55"EMR_SETBKCOLOR",
56"EMR_OFFSETCLIPRGN",
57"EMR_MOVETOEX",
58"EMR_SETMETARGN",
59"EMR_EXCLUDECLIPRECT",
60"EMR_INTERSECTCLIPRECT",
61"EMR_SCALEVIEWPORTEXTEX",
62"EMR_SCALEWINDOWEXTEX",
63"EMR_SAVEDC",
64"EMR_RESTOREDC",
65"EMR_SETWORLDTRANSFORM",
66"EMR_MODIFYWORLDTRANSFORM",
67"EMR_SELECTOBJECT",
68"EMR_CREATEPEN",
69"EMR_CREATEBRUSHINDIRECT",
70"EMR_DELETEOBJECT",
71"EMR_ANGLEARC",
72"EMR_ELLIPSE",
73"EMR_RECTANGLE",
74"EMR_ROUNDRECT",
75"EMR_ARC",
76"EMR_CHORD",
77"EMR_PIE",
78"EMR_SELECTPALETTE",
79"EMR_CREATEPALETTE",
80"EMR_SETPALETTEENTRIES",
81"EMR_RESIZEPALETTE",
82"EMR_REALIZEPALETTE",
83"EMR_EXTFLOODFILL",
84"EMR_LINETO",
85"EMR_ARCTO",
86"EMR_POLYDRAW",
87"EMR_SETARCDIRECTION",
88"EMR_SETMITERLIMIT",
89"EMR_BEGINPATH",
90"EMR_ENDPATH",
91"EMR_CLOSEFIGURE",
92"EMR_FILLPATH",
93"EMR_STROKEANDFILLPATH",
94"EMR_STROKEPATH",
95"EMR_FLATTENPATH",
96"EMR_WIDENPATH",
97"EMR_SELECTCLIPPATH",
98"EMR_ABORTPATH",
99"69--Unknown",
100
101"EMR_GDICOMMENT",
102"EMR_FILLRGN",
103"EMR_FRAMERGN",
104"EMR_INVERTRGN",
105"EMR_PAINTRGN ",
106"EMR_EXTSELECTCLIPRGN",
107"EMR_BITBLT ",
108"EMR_STRETCHBLT",
109"EMR_MASKBLT",
110"EMR_PLGBLT",
111"EMR_SETDIBITSTODEVICE",
112"EMR_STRETCHDIBITS",
113"EMR_EXTCREATEFONTINDIRECTW",
114"EMR_EXTTEXTOUTA ",
115"EMR_EXTTEXTOUTW",
116"EMR_POLYBEZIER16",
117"EMR_POLYGON16 ",
118"EMR_POLYLINE16 ",
119"EMR_POLYBEZIERTO16",
120"EMR_POLYLINETO16 ",
121"EMR_POLYPOLYLINE16",
122"EMR_POLYPOLYGON16",
123"EMR_POLYDRAW16 ",
124"EMR_CREATEMONOBRUSH ",
125"EMR_CREATEDIBPATTERNBRUSHPT",
126"EMR_EXTCREATEPEN",
127"EMR_POLYTEXTOUTA ",
128"EMR_POLYTEXTOUTW",
129"EMR_SETICMMODE ",
130"EMR_CREATECOLORSPACE",
131"EMR_SETCOLORSPACE ",
132"EMR_DELETECOLORSPACE ",
133"EMR_GLSRECORD ",
134"EMR_GLSBOUNDEDRECORD",
135"EMR_PIXELFORMAT",
136"EMR_RESERVED_105 ",
137"EMR_RESERVED_106 ",
138"EMR_RESERVED_107",
139"EMR_RESERVED_108 ",
140"EMR_RESERVED_109",
141"EMR_RESERVED_110 ",
142"EMR_COLORCORRECTPALETTE",
143"EMR_SETICMPROFILEA ",
144"EMR_SETICMPROFILEW ",
145"EMR_ALPHABLEND",
146"EMR_SETLAYOUT ",
147"EMR_TRANSPARENTBLT",
148"EMR_RESERVED_117 ",
149"EMR_GRADIENTFILL",
150"EMR_RESERVED_119 ",
151"EMR_RESERVED_120",
152"EMR_COLORMATCHTOTARGETW",
153"EMR_CREATECOLORSPACEW"
154};
155
156int main()
157{
158 setlocale(LC_ALL,"");
159
160 const char* pszFileName = "C:\\Documents and Settings\\joe\\桌面\\1\\00053.SPL";
161
162 if(!AnalyseFile(pszFileName))
163 PFM("Analyse File Failed!");
164 else
165 PFM("Analyse File Successed Completed!");
166
167 return 0;
168}
169
170
171BOOL AnalyseFile(const char* pszFileName)
172{
173 BOOL bRet = FALSE;
174
175 DWORD dwStartPos = 0;
176
177 FILE* pFile = fopen(pszFileName,"rb");
178
179 if(!pFile)
180  {
181 PFM("Open File Failed!");
182 return bRet;
183 }
184
185 PFM("Begin Analyse");
186
187 PFM("[1] Begin to read SPL HeaderInfo:");
188
189 /**//* =======================Headers================================ */
190 DWORD dwTmp = 0;
191
192 fseek(pFile,0,0);
193
194 fread(&dwTmp,sizeof(DWORD),1,pFile);
195
196 PFT("簽名",dwTmp);
197
198
199 fread(&dwTmp,sizeof(DWORD),1,pFile);
200
201 dwStartPos = dwTmp;
202
203 PFT("正文信息偏移:",dwTmp);
204
205 fread(&dwTmp,sizeof(DWORD),1,pFile);
206
207 PFT("文檔信息偏移(UNICODE):",dwTmp);
208
209 long pos = ftell(pFile);
210
211 fseek(pFile,dwTmp,SEEK_SET);
212
213 wchar_t pszInfo[256] = {0};
214 pszInfo[0] = L'(';
215
216 WORD wTmp;
217 for(int i = 1;;i++)
218 {
219 fread(&wTmp,sizeof(wTmp),1,pFile);
220
221 if(!wTmp)
222 break;
223
224 memcpy((char*)&pszInfo[i],&wTmp,sizeof(wTmp));
225 }
226 pszInfo[i] = L')';
227 UPFM(pszInfo);
228
229 fseek(pFile,pos,SEEK_SET);
230
231 fread(&dwTmp,sizeof(DWORD),1,pFile);
232
233 PFT("打印端口信息偏移(UNICODE):",dwTmp);
234
235 fseek(pFile,dwTmp,SEEK_SET);
236
237 memset(pszInfo,0,sizeof(wchar_t)*256);
238 pszInfo[0] = L'(';
239 for(i = 1;;i++)
240 {
241 fread(&wTmp,sizeof(wTmp),1,pFile);
242
243 if(!wTmp)
244 break;
245
246 memcpy((char*)&pszInfo[i],&wTmp,sizeof(wTmp));
247 }
248 pszInfo[i] = L')';
249 UPFM(pszInfo);
250
251 /**//* ======================== Unknown datas ================================= */
252 PFM("[2] Begin to read SPL Unknown Datas:");
253
254 fseek(pFile,dwStartPos,SEEK_SET);
255
256 fread(&dwTmp,sizeof(DWORD),1,pFile);
257
258 PFT("未知數(shù)據(jù)",dwTmp);
259
260 fread(&dwTmp,sizeof(DWORD),1,pFile);
261
262 PFT("未知數(shù)據(jù)",dwTmp);
263
264 /**//* ======================== Record datas ================================= */
265 PFM("[3] Begin to read Record Datas:");
266
267 DWORD dwTmp2 = 0;
268 for(int i=0;;i++)
269 {
270 pos = ftell(pFile);
271
272 fread(&dwTmp,sizeof(DWORD),1,pFile);
273
274 fread(&dwTmp2,sizeof(DWORD),1,pFile);
275
276
277 printf("index: (%04d) type: 0x%04X size: %04d 0x%08X (%s)\n",i,dwTmp,dwTmp2,pos,ID_Func[dwTmp-1]);
278
279// printf("位置: %08X",pos);
280
281// printf("(%s)\n",ID_Func[dwTmp]);
282
283 if(dwTmp == 0x0E)
284 {
285// printf("index: (%04d) type: 0x%04X size: %04d 0x%08X (End)\n",i,dwTmp,dwTmp2,pos,);
286 PFM("End of Record Datas.");
287 break;
288 }
289
290 fseek(pFile,pos+dwTmp2,SEEK_SET);
291 }
292
293 if(pFile) fclose(pFile);
294 bRet = TRUE;
295
296 return bRet;
297}
298
299
300
301
302
303
304
305
306
307
308
309
有了以上的分析，你應(yīng)該很容易寫一個(gè)spl To EMF 文件格式的程序了。 如果代碼有什么謬誤或者Bug,請(qǐng)留言或者EmailToMe: xiaolu69soft@yahoo.com.cn 祝你好運(yùn)~ rawdata
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