pdfdetach.cc 8.48 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
//========================================================================
//
// pdfdetach.cc
//
// Copyright 2010 Glyph & Cog, LLC
//
//========================================================================

//========================================================================
//
// Modified under the Poppler project - http://poppler.freedesktop.org
//
// All changes made under the Poppler project to this file are licensed
// under GPL version 2 or later
//
// Copyright (C) 2011 Carlos Garcia Campos <carlosgc@gnome.org>
17
// Copyright (C) 2013 Yury G. Kudryashov <urkud.urkud@gmail.com>
Albert Astals Cid's avatar
Albert Astals Cid committed
18
// Copyright (C) 2014, 2017 Adrian Johnson <ajohnson@redneon.com>
19
// Copyright (C) 2018 Albert Astals Cid <aacid@kde.org>
20
// Copyright (C) 2018 Adam Reichold <adam.reichold@t-online.de>
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44
//
// To see a description of the changes please see the Changelog file that
// came with your tarball or type make ChangeLog if you are building from git
//
//========================================================================

#include "config.h"
#include <poppler-config.h>
#include <stdio.h>
#include "goo/gtypes.h"
#include "goo/gmem.h"
#include "goo/GooList.h"
#include "parseargs.h"
#include "Annot.h"
#include "GlobalParams.h"
#include "Page.h"
#include "PDFDoc.h"
#include "PDFDocFactory.h"
#include "FileSpec.h"
#include "CharTypes.h"
#include "Catalog.h"
#include "UnicodeMap.h"
#include "PDFDocEncoding.h"
#include "Error.h"
45
#include "Win32Console.h"
46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81

static GBool doList = gFalse;
static int saveNum = 0;
static GBool saveAll = gFalse;
static char savePath[1024] = "";
static char textEncName[128] = "";
static char ownerPassword[33] = "\001";
static char userPassword[33] = "\001";
static GBool printVersion = gFalse;
static GBool printHelp = gFalse;

static ArgDesc argDesc[] = {
  {"-list",   argFlag,     &doList,        0,
   "list all embedded files"},
  {"-save",   argInt,      &saveNum,       0,
   "save the specified embedded file"},
  {"-saveall", argFlag,    &saveAll,       0,
   "save all embedded files"},
  {"-o",      argString,   savePath,       sizeof(savePath),
   "file name for the saved embedded file"},
  {"-enc",    argString,   textEncName,    sizeof(textEncName),
   "output text encoding name"},
  {"-opw",    argString,   ownerPassword,  sizeof(ownerPassword),
   "owner password (for encrypted files)"},
  {"-upw",    argString,   userPassword,   sizeof(userPassword),
   "user password (for encrypted files)"},
  {"-v",      argFlag,     &printVersion,  0,
   "print copyright and version info"},
  {"-h",      argFlag,     &printHelp,     0,
   "print usage information"},
  {"-help",   argFlag,     &printHelp,     0,
   "print usage information"},
  {"--help",  argFlag,     &printHelp,     0,
   "print usage information"},
  {"-?",      argFlag,     &printHelp,     0,
   "print usage information"},
82
  { }
83 84 85 86 87 88 89 90 91 92 93 94
};

int main(int argc, char *argv[]) {
  GooString *fileName;
  UnicodeMap *uMap;
  GooString *ownerPW, *userPW;
  PDFDoc *doc;
  char uBuf[8];
  char path[1024];
  char *p;
  GBool ok;
  int exitCode;
95
  GooList *embeddedFiles = nullptr;
96 97 98 99 100
  int nFiles, nPages, n, i, j;
  FileSpec *fileSpec;
  Page *page;
  Annots *annots;
  Annot *annot;
Albert Astals Cid's avatar
Albert Astals Cid committed
101
  const GooString *s1;
102 103 104
  Unicode u;
  GBool isUnicode;

105
  Win32Console win32Console(&argc, &argv);
106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126
  exitCode = 99;

  // parse args
  ok = parseArgs(argDesc, &argc, argv);
  if ((doList ? 1 : 0) +
      ((saveNum != 0) ? 1 : 0) +
      (saveAll ? 1 : 0) != 1) {
    ok = gFalse;
  }
  if (!ok || argc != 2 || printVersion || printHelp) {
    fprintf(stderr, "pdfdetach version %s\n", PACKAGE_VERSION);
    fprintf(stderr, "%s\n", popplerCopyright);
    fprintf(stderr, "%s\n", xpdfCopyright);
    if (!printVersion) {
      printUsage("pdfdetach", "<PDF-file>", argDesc);
    }
    goto err0;
  }
  fileName = new GooString(argv[1]);

  // read config file
127
  globalParams = new GlobalParams();
128 129 130 131 132 133 134 135 136 137 138 139 140 141 142
  if (textEncName[0]) {
    globalParams->setTextEncoding(textEncName);
  }

  // get mapping to output encoding
  if (!(uMap = globalParams->getTextEncoding())) {
    error(errConfig, -1, "Couldn't get text encoding");
    delete fileName;
    goto err1;
  }

  // open PDF file
  if (ownerPassword[0] != '\001') {
    ownerPW = new GooString(ownerPassword);
  } else {
143
    ownerPW = nullptr;
144 145 146 147
  }
  if (userPassword[0] != '\001') {
    userPW = new GooString(userPassword);
  } else {
148
    userPW = nullptr;
149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170
  }

  doc = PDFDocFactory().createPDFDoc(*fileName, ownerPW, userPW);

  if (userPW) {
    delete userPW;
  }
  if (ownerPW) {
    delete ownerPW;
  }
  if (!doc->isOk()) {
    exitCode = 1;
    goto err2;
  }

  embeddedFiles = new GooList();
  for (i = 0; i < doc->getCatalog()->numEmbeddedFiles(); ++i)
    embeddedFiles->append(doc->getCatalog()->embeddedFile(i));

  nPages = doc->getCatalog()->getNumPages();
  for (i = 0; i < nPages; ++i) {
    page = doc->getCatalog()->getPage(i + 1);
171 172
    if (!page)
      continue;
173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319
    annots = page->getAnnots();
    if (!annots)
      break;

    for (j = 0; j < annots->getNumAnnots(); ++j) {
      annot = annots->getAnnot(j);
      if (annot->getType() != Annot::typeFileAttachment)
        continue;
      embeddedFiles->append(new FileSpec(static_cast<AnnotFileAttachment *>(annot)->getFile()));
    }
  }

  nFiles = embeddedFiles->getLength();

  // list embedded files
  if (doList) {
    printf("%d embedded files\n", nFiles);
    for (i = 0; i < nFiles; ++i) {
      fileSpec = static_cast<FileSpec *>(embeddedFiles->get(i));
      printf("%d: ", i+1);
      s1 = fileSpec->getFileName();
      if ((s1->getChar(0) & 0xff) == 0xfe && (s1->getChar(1) & 0xff) == 0xff) {
        isUnicode = gTrue;
        j = 2;
      } else {
        isUnicode = gFalse;
        j = 0;
      }
      while (j < fileSpec->getFileName()->getLength()) {
        if (isUnicode) {
          u = ((s1->getChar(j) & 0xff) << 8) | (s1->getChar(j+1) & 0xff);
          j += 2;
        } else {
          u = pdfDocEncoding[s1->getChar(j) & 0xff];
          ++j;
        }
        n = uMap->mapUnicode(u, uBuf, sizeof(uBuf));
        fwrite(uBuf, 1, n, stdout);
      }
      fputc('\n', stdout);
    }

  // save all embedded files
  } else if (saveAll) {
    for (i = 0; i < nFiles; ++i) {
      fileSpec = static_cast<FileSpec *>(embeddedFiles->get(i));
      if (savePath[0]) {
	n = strlen(savePath);
	if (n > (int)sizeof(path) - 2) {
	  n = sizeof(path) - 2;
	}
	memcpy(path, savePath, n);
	path[n] = '/';
	p = path + n + 1;
      } else {
	p = path;
      }
      s1 = fileSpec->getFileName();
      if ((s1->getChar(0) & 0xff) == 0xfe && (s1->getChar(1) & 0xff) == 0xff) {
        isUnicode = gTrue;
        j = 2;
      } else {
        isUnicode = gFalse;
        j = 0;
      }
      while (j < fileSpec->getFileName()->getLength()) {
        if (isUnicode) {
          u = ((s1->getChar(j) & 0xff) << 8) | (s1->getChar(j+1) & 0xff);
          j += 2;
        } else {
          u = pdfDocEncoding[s1->getChar(j) & 0xff];
          ++j;
        }
        n = uMap->mapUnicode(u, uBuf, sizeof(uBuf));
        if (p + n >= path + sizeof(path))
          break;
        memcpy(p, uBuf, n);
        p += n;
      }
      *p = '\0';

      if (!fileSpec->getEmbeddedFile()->save(path)) {
	error(errIO, -1, "Error saving embedded file as '{0:s}'", p);
	exitCode = 2;
	goto err2;
      }
    }

  // save an embedded file
  } else {
    if (saveNum < 1 || saveNum > nFiles) {
      error(errCommandLine, -1, "Invalid file number");
      goto err2;
    }

    fileSpec = static_cast<FileSpec *>(embeddedFiles->get(saveNum - 1));
    if (savePath[0]) {
      p = savePath;
    } else {
      p = path;
      s1 = fileSpec->getFileName();
      if ((s1->getChar(0) & 0xff) == 0xfe && (s1->getChar(1) & 0xff) == 0xff) {
        isUnicode = gTrue;
        j = 2;
      } else {
        isUnicode = gFalse;
        j = 0;
      }
      while (j < fileSpec->getFileName()->getLength()) {
        if (isUnicode) {
          u = ((s1->getChar(j) & 0xff) << 8) | (s1->getChar(j+1) & 0xff);
          j += 2;
        } else {
          u = pdfDocEncoding[s1->getChar(j) & 0xff];
          ++j;
        }
        n = uMap->mapUnicode(u, uBuf, sizeof(uBuf));
        if (p + n >= path + sizeof(path))
          break;
        memcpy(p, uBuf, n);
        p += n;
      }
      *p = '\0';
      p = path;
    }

    if (!fileSpec->getEmbeddedFile()->save(p)) {
      error(errIO, -1, "Error saving embedded file as '{0:s}'", p);
      exitCode = 2;
      goto err2;
    }
  }

  exitCode = 0;

  // clean up
 err2:
  if (embeddedFiles)
    deleteGooList(embeddedFiles, FileSpec);
  uMap->decRefCnt();
  delete doc;
 err1:
  delete globalParams;
 err0:

  return exitCode;
}