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97 lines
4.5 KiB
97 lines
4.5 KiB
////////////////////////////////////////////////////////////////////////////
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// Copyright KAZ 2021 //
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// //
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// contact (at) kaz.bzh //
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// //
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// This software is a filter to shrink email by attachment extraction. //
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// //
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// This software is governed by the CeCILL-B license under French law and //
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// abiding by the rules of distribution of free software. You can use, //
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// modify and/or redistribute the software under the terms of the //
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// CeCILL-B license as circulated by CEA, CNRS and INRIA at the following //
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// URL "http://www.cecill.info". //
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// //
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// As a counterpart to the access to the source code and rights to copy, //
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// modify and redistribute granted by the license, users are provided //
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// only with a limited warranty and the software's author, the holder of //
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// the economic rights, and the successive licensors have only limited //
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// liability. //
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// //
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// In this respect, the user's attention is drawn to the risks associated //
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// with loading, using, modifying and/or developing or reproducing the //
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// software by the user in light of its specific status of free software, //
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// that may mean that it is complicated to manipulate, and that also //
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// therefore means that it is reserved for developers and experienced //
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// professionals having in-depth computer knowledge. Users are therefore //
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// encouraged to load and test the software's suitability as regards //
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// their requirements in conditions enabling the security of their //
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// systems and/or data to be ensured and, more generally, to use and //
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// operate it in the same conditions as regards security. //
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// //
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// The fact that you are presently reading this means that you have had //
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// knowledge of the CeCILL-B license and that you accept its terms. //
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////////////////////////////////////////////////////////////////////////////
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#include "kazDebug.hpp"
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#include "kazMisc.hpp"
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#include "EmbeddedData.hpp"
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#include "Attachment.hpp"
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using namespace std;
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using namespace kaz;
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// ================================================================================
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static const string EMBEDDED_TAG ("SRC=\"DATA:");
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// ================================================================================
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EmbeddedData::EmbeddedData (const int &imgIdx, const string &contentType, const string &name, const string::size_type &startData, const string::size_type &dataLength)
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: imgIdx (imgIdx),
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contentType (contentType),
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name (name),
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startData (startData),
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dataLength (dataLength) {
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DEF_LOG ("EmbeddedData::EmbeddedData", "imgIdx: " << imgIdx << " contentType:" << contentType << " name:" << name << " startData:" << startData << " dataLength:" << dataLength);
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}
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// ================================================================================
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void
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EmbeddedData::fillEmbeddedData (const vector<string> &imgs, const streamoff &minAttachSize, vector<EmbeddedData> &data) {
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DEF_LOG ("EmbeddedData::fillEmbeddedData", "imgs.size: " << imgs.size () << " minAttachSize:" << minAttachSize << " data.size:" << data.size ());
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int imgIdx (-1);
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for (const string &img : imgs) {
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++imgIdx;
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if (streamoff (img.length ()) < minAttachSize)
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continue;
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string::size_type startPos (caseInsensitiveFind (img, EMBEDDED_TAG));
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if (startPos == string::npos)
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continue;
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startPos += EMBEDDED_TAG.length ();
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// XXX check base64 ?
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string::size_type endPos = img.find_first_of (";,", startPos);
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LOG_BUG (endPos == string::npos, continue, "eMailShrinker: bug E1: can't find end of contentType" );
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const string contentType (img.substr (startPos, endPos-startPos));
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const string name (Attachment::getUnknown (contentType));
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startPos = img.find (',', startPos);
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LOG_BUG (startPos == string::npos, continue, "eMailShrinker: bug E2: can't find start data" );
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++startPos;
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endPos = img.find ('"', startPos);
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data.push_back (EmbeddedData (imgIdx, contentType, name, startPos, endPos-startPos));
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}
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}
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// ================================================================================
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ostream&
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kaz::operator << (ostream& os, const EmbeddedData& embeddedData) {
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os << embeddedData.imgIdx << ": "
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<< embeddedData.contentType << " - " << embeddedData.name
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<< " (" << embeddedData.startData << " / " << embeddedData.dataLength << ") "
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<< embeddedData.downloadUrl
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<< endl;
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return os;
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}
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// ================================================================================
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