This commit is contained in:
François 2021-05-06 09:58:16 +02:00
parent 3f640e6e13
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////////////////////////////////////////////////////////////////////////////
// Copyright KAZ 2021 //
// //
// contact (at) kaz.bzh //
// //
// This software is a filter to shrink email by attachment extraction. //
// //
// This software is governed by the CeCILL-B license under French law and //
// abiding by the rules of distribution of free software. You can use, //
// modify and/or redistribute the software under the terms of the //
// CeCILL-B license as circulated by CEA, CNRS and INRIA at the following //
// URL "http://www.cecill.info". //
// //
// As a counterpart to the access to the source code and rights to copy, //
// modify and redistribute granted by the license, users are provided //
// only with a limited warranty and the software's author, the holder of //
// the economic rights, and the successive licensors have only limited //
// liability. //
// //
// In this respect, the user's attention is drawn to the risks associated //
// with loading, using, modifying and/or developing or reproducing the //
// software by the user in light of its specific status of free software, //
// that may mean that it is complicated to manipulate, and that also //
// therefore means that it is reserved for developers and experienced //
// professionals having in-depth computer knowledge. Users are therefore //
// encouraged to load and test the software's suitability as regards //
// their requirements in conditions enabling the security of their //
// systems and/or data to be ensured and, more generally, to use and //
// operate it in the same conditions as regards security. //
// //
// The fact that you are presently reading this means that you have had //
// knowledge of the CeCILL-B license and that you accept its terms. //
////////////////////////////////////////////////////////////////////////////

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////////////////////////////////////////////////////////////////////////////
// Copyright KAZ 2021 //
// //
// contact (at) kaz.bzh //
// //
// This software is a filter to shrink email by attachment extraction. //
// //
// This software is governed by the CeCILL-B license under French law and //
// abiding by the rules of distribution of free software. You can use, //
// modify and/or redistribute the software under the terms of the //
// CeCILL-B license as circulated by CEA, CNRS and INRIA at the following //
// URL "http://www.cecill.info". //
// //
// As a counterpart to the access to the source code and rights to copy, //
// modify and redistribute granted by the license, users are provided //
// only with a limited warranty and the software's author, the holder of //
// the economic rights, and the successive licensors have only limited //
// liability. //
// //
// In this respect, the user's attention is drawn to the risks associated //
// with loading, using, modifying and/or developing or reproducing the //
// software by the user in light of its specific status of free software, //
// that may mean that it is complicated to manipulate, and that also //
// therefore means that it is reserved for developers and experienced //
// professionals having in-depth computer knowledge. Users are therefore //
// encouraged to load and test the software's suitability as regards //
// their requirements in conditions enabling the security of their //
// systems and/or data to be ensured and, more generally, to use and //
// operate it in the same conditions as regards security. //
// //
// The fact that you are presently reading this means that you have had //
// knowledge of the CeCILL-B license and that you accept its terms. //
////////////////////////////////////////////////////////////////////////////
#include <iostream>
#include <vector>
#include <set>
#include <fstream>
#include <iomanip>
#include <math.h>
#include <algorithm>
#include <unistd.h>
#include <boost/algorithm/string.hpp>
#include "kazDebug.hpp"
#include "kazMisc.hpp"
#include "SizeArg.hpp"
#include "Attachment.hpp"
using namespace std;
using namespace kaz;
// ================================================================================
const string Attachment::contentTypeToken ("content-type");
const string Attachment::contentDispositionToken ("content-disposition");
const string Attachment::contentTransferEncodingToken ("content-transfer-encoding");
const string Attachment::base64Token ("base64");
const string Attachment::quotedPrintableToken ("quoted-printable");
const string Attachment::contentIDToken ("content-id");
const string Attachment::PLAIN ("plain");
const string Attachment::HTML ("html");
const string Attachment::RELATED ("related");
const string Attachment::ALTERNATIVE ("alternative");
const regex Attachment::nameCharsetRegEx (".*name\\*=(.*)");
const regex Attachment::nameRegEx (".*name=\"([^\"]*)\".*");
const regex Attachment::boundaryRegEx (".*boundary=\"?([^\" ]*)\"?.*");
const regex Attachment::cidDefRegEx (".*<([^>]*)>.*");
const regex Attachment::textRegEx (".*text/("+PLAIN+"|"+HTML+").*");
const regex Attachment::multiRegEx ("\\s*multipart/(mixed|"+RELATED+"|"+ALTERNATIVE+").*");
const string Attachment::IMG_BEGIN ("<IMG");
const string Attachment::IMG_END (">");
static const string SRC_BEGIN ("SRC=\"");
static const string RFC822 ("message/rfc822");
// ================================================================================
string
Attachment::getUnknown (const string &contentType) {
DEF_LOG ("Attachment::getUnknown", "contentType: " << contentType);
static time_t now (time (NULL));
static int count (0);
tm *ltm = localtime (&now);
ostringstream nameStream;
nameStream << "U-"
<< std::setfill ('0') << std::setw (2) << (ltm->tm_year-100)
<< std::setfill ('0') << std::setw (2) << (1 + ltm->tm_mon)
<< std::setfill ('0') << std::setw (2) << ltm->tm_mday
<< std::setfill ('0') << std::setw (2) << ltm->tm_hour
<< std::setfill ('0') << std::setw (2) << ltm->tm_min
<< std::setfill ('0') << std::setw (2) << ltm->tm_sec
<< "-" << count;
const string::size_type subTypePos (contentType.find ("/"));
if (subTypePos != string::npos)
nameStream << "." << contentType.substr (subTypePos+1);
++count;
LOG ("name: " << nameStream.str ());
return nameStream.str ();
}
// ================================================================================
void
Attachment::removeSection (string &content, const string &beginTag, const string &endTag) {
DEF_LOG ("Attachment::removeSection", "beginTag: " << beginTag << " endTag: " << endTag);
for (string::size_type startPos (0);
(startPos = caseInsensitiveFind (content, beginTag, startPos)) != string::npos;
) {
string::size_type stopPos = caseInsensitiveFind (content, endTag, startPos);
LOG_BUG (stopPos == startPos, content.erase (startPos, endTag.length ()); continue, "eMailShrinker: bug A1: removeSection: no " << beginTag);
LOG_BUG (stopPos == string::npos, content.erase (startPos, beginTag.length ()); break, "eMailShrinker: bug A2: removeSection: no " << endTag);
LOG ("KAZ start: " << startPos << " stop: " << stopPos);
content.erase (startPos, stopPos+endTag.length ()-startPos);
}
}
// ================================================================================
string
Attachment::getSection (const string &content, const string &beginTag, const string &endTag) {
DEF_LOG ("Attachment::getSection", "beginTag: " << beginTag << " endTag: " << endTag << " content: " << content);
vector<string> list;
getSection (content, beginTag, endTag, list);
size_t sum (0);
for (const string &s : list)
sum += s.length ();
string result;
result.reserve (sum);
for (const string &s : list)
result += s;
LOG ("result: " << result);
return result;
}
// ================================================================================
void
Attachment::getSection (const string &content, const string &beginTag, const string &endTag, vector<string> &result) {
DEF_LOG ("Attachment::getSection", "beginTag: " << beginTag << " endTag: " << endTag << " content: " << content);
for (string::size_type startPos (0);
(startPos = caseInsensitiveFind (content, beginTag, startPos)) != string::npos;
) {
LOG (beginTag << ": " << startPos);
string::size_type stopPos = caseInsensitiveFind (content, endTag, startPos);
LOG_BUG (stopPos == string::npos, break, "eMailShrinker: bug A3: " << endTag << " not found! at: " << startPos);
LOG ("start: " << startPos << " stop: " << stopPos);
LOG_BUG (startPos == stopPos, /**/, "eMailShrinker: bug A4: " << endTag << " without " << beginTag << " at: " << startPos);
if (startPos != stopPos) {
startPos += beginTag.length ();
result.push_back (content.substr (startPos, stopPos-startPos));
}
startPos = stopPos+endTag.length ();
}
}
// ================================================================================
const string
Attachment::getContentType () const {
map<string, string>::const_iterator it (env.find (contentTypeToken));
if (it == env.end ())
return "";
const string &contentTypeVal (it->second);
const string::size_type semicolonPos = contentTypeVal.find (';');
if (semicolonPos == string::npos)
return contentTypeVal;
return contentTypeVal.substr (0, semicolonPos);
}
const string
Attachment::getAttachName () const {
DEF_LOG ("Attachment::getAttachName", "");
string result = getProp (contentTypeToken, nameRegEx);
if (result.length ()) {
LOG ("name=: " << result);
encodedWord (result);
return result;
}
result = getProp (contentTypeToken, nameCharsetRegEx);
if (result.length ()) {
LOG ("name*=: " << result);
charsetValue (result);
return result;
}
// XXX il faut composer s'il y a plusieurs ligne filename*x=
result = getProp (contentDispositionToken, nameRegEx);
if (result.length ()) {
LOG ("filename=: " << result);
encodedWord (result);
return result;
}
// XXX il faut composer s'il y a plusieurs ligne filename*x*=
result = getProp (contentDispositionToken, nameRegEx);
if (result.length ()) {
LOG ("filename*=: " << result);
charsetValue (result);
return result;
}
return getUnknown (getContentType ());
}
const string &
Attachment::getBoundary () const {
return boundary;
}
const streamoff
Attachment::getSize () const {
return endPos-beginPos;
}
const string
Attachment::getProp (const string &token, const regex &regEx) const {
DEF_LOG ("Attachment::getProp", "token: " << token);
map<string, string>::const_iterator it (env.find (token));
if (it == env.end ()) {
LOG ("no token");
return "";
}
const string &val (it->second);
LOG ("val: " << val);
if (!regex_match (val.begin (), val.end (), regEx)) {
LOG ("no prop");
return "";
}
return regex_replace (val, regEx, "$1");
}
const bool
Attachment::isBase64Encoding () const {
return isDefProp (contentTransferEncodingToken, base64Token);
}
const bool
Attachment::isQuotedPrintableEnconding () const {
return isDefProp (contentTransferEncodingToken, quotedPrintableToken);
}
const bool
Attachment::isTextBase64 () const {
return !getProp (contentTypeToken, textRegEx).empty () && isBase64Encoding ();
}
const bool
Attachment::isDefProp (const string &token, const string &val) const {
DEF_LOG ("Attachment::getProp", "getProp token: " << token << " val: " << val);
map<string, string>::const_iterator it (env.find (token));
if (it == env.end ())
return false;
// XXX case insensitive ??
return it->second.find (val) != string::npos;
}
// ================================================================================
Attachment::Attachment (ifstream &mbox, const int &level, const streamoff beginInParent, streamoff &curPos)
: level (level),
beginInParent (beginInParent),
beginPos (curPos),
contentPos (0),
endPos (0),
toExtract (false),
toUpdate (false),
toDisclaim (false),
boundaryMiddleSize (0) {
DEF_LOG ("Attachment::Attachment", "curPos: " << curPos << " level: " << level);
readMime (mbox, curPos);
readBoundaries (mbox, curPos);
}
// ================================================================================
void
Attachment::readMime (ifstream &mbox, streamoff &curPos) {
DEF_LOG ("Attachment::readMime", "curPos: " << curPos);
string lastVar;
string line;
for (; getline (mbox, line); ) {
LOG ("pos: " << curPos << " line: " << line);
curPos += line.length () + 1;
if (line.empty ())
break;
if (line[0] == ' ' || line[0] == '\t') {
if (lastVar.empty ()) {
LOG_BUG (true, /**/, "eMailShrinker: bug A5: not compliant MIME. pos: " << (curPos - (line.length () + 1)) << " line: " << line);
} else {
LOG ("add line to var: " << line);
env.find (lastVar)->second += line;
LOG ("new val: " << env.find (lastVar)->second);
}
continue;
}
string::size_type colonPos = line.find (':');
if (colonPos != string::npos) {
lastVar = line.substr (0, colonPos);
toLower (lastVar);
LOG ("find var: " << lastVar);
string val (line.length () >= colonPos+2 ? line.substr (colonPos+2) : ""); // XXX check RFC " " after ": "
LOG ("new var: " << lastVar << " <=> " << val);
env [lastVar] = val;
}
}
LOG ("end of mime");
contentPos = curPos;
cid = getProp (contentIDToken, cidDefRegEx);
boundary = getProp (contentTypeToken, boundaryRegEx);
LOG ("boundary: " << boundary);
if (boundary.length ()) {
boundary = "--"+boundary+"--";
boundaryMiddleSize = boundary.length () - 2;
}
LOG ("readMime contentPos: " << contentPos << " cid: " << cid << " boundary: " << boundary);
}
// ================================================================================
void
Attachment::readBoundaries (ifstream &mbox, streamoff &curPos) {
DEF_LOG ("Attachment::readBoundaries", "curPos: " << curPos);
if (caseInsensitiveFind (getContentType (), RFC822) != string::npos) {
subAttachements.push_back (Attachment (mbox, level+1, curPos, curPos));
subAttachements.back ().endPos = curPos;
return;
}
if (boundary.empty ())
return;
for (; nextBondary (mbox, curPos); )
;
}
bool
Attachment::nextBondary (ifstream &mbox, streamoff &curPos) {
DEF_LOG ("Attachment::nextBondary", "curPos: " << curPos << " boundary: " << boundary);
bool isTextBase64 (subAttachements.size () && subAttachements.back ().isTextBase64 ());
LOG ("isTextBase64: " << isTextBase64 << " attach: " << *this);
for (string prev, line; getline (mbox, line); ) {
LOG ("curPos: " << curPos << " line: " << line);
streamoff lastPos = curPos;
curPos += line.length () + 1;
string::size_type bpos = line.find (boundary.c_str (), 0, boundaryMiddleSize);
if (bpos == string::npos) {
string clearLine (line);
if (isTextBase64)
base64Decode (clearLine);
string couple (prev+clearLine);
for (vector <string>::iterator it = stringsToUpdate.begin ();
it != stringsToUpdate.end ();
++it)
if (couple.find (*it) != string::npos) {
LOG ("find: "+ *it);
subAttachements.back ().toUpdate = true;
}
prev = clearLine;
continue;
}
LOG ("find: " << boundary);
LOG ("lastPos: " << lastPos << " bpos: " << bpos << " boundaryMiddleSize: " << boundaryMiddleSize);
if (subAttachements.size ())
subAttachements.back ().endPos = lastPos;
LOG ("line: " << line << "bpos+boundaryMiddleSize: " << (bpos+boundaryMiddleSize) << " find: " << line.find ("--", bpos+boundaryMiddleSize));
bpos += boundaryMiddleSize;
if (line.find ("--", bpos) == bpos) {
LOG ("end");
return false;
}
subAttachements.push_back (Attachment (mbox, level+1, lastPos, curPos));
return true;
}
endPos = curPos;
return false;
}
// ================================================================================
void
Attachment::markDisclaim (bool &plainMarked, bool &htmlMarked) {
if (plainMarked && htmlMarked)
return;
string multiProp = getProp (contentTypeToken, multiRegEx);
// LOG_BUG (multiProp == ALTERNATIVE && subAttachements.size () != 2, continue, "eMailShrinker: bug A6: alternative give not 1 case (" << subAttachements.size () << ").");
if (multiProp.length ())
for (Attachment &subAttach : subAttachements)
subAttach.markDisclaim (plainMarked, htmlMarked);
string textProp = getProp (contentTypeToken, textRegEx);
if (textProp.empty ())
return;
if (!plainMarked && textProp == PLAIN)
plainMarked = toUpdate = toDisclaim = true;
if (!htmlMarked && textProp == HTML)
htmlMarked = toUpdate = toDisclaim = true;
}
// ================================================================================
bool
Attachment::markSignificant (const string &parentMultiProp, const streamoff &minAttachSize, ifstream &mbox, vector<Attachment *> &allMarkedPtrs) {
DEF_LOG ("Attachment::markSignificant", "parentMultiProp: " << parentMultiProp << " minAttachSize: " << minAttachSize);
string textProp = getProp (contentTypeToken, textRegEx);
bool cantBeExtract ((parentMultiProp == ALTERNATIVE && (textProp == PLAIN || textProp == HTML)) ||
(parentMultiProp == RELATED && textProp == HTML));
string multiProp = getProp (contentTypeToken, multiRegEx);
for (Attachment &sub : subAttachements)
cantBeExtract |= sub.markSignificant (multiProp, minAttachSize, mbox, allMarkedPtrs);
if (getProp (contentTypeToken, textRegEx) == HTML) {
string content = getContent (mbox);
vector<string> imgs;
getSection (content, IMG_BEGIN, IMG_END, imgs);
EmbeddedData::fillEmbeddedData (imgs, minAttachSize, embeddedData);
if (embeddedData.size ())
toUpdate = true;
}
cantBeExtract |= toUpdate;
if (boundary.empty () && getSize () >= minAttachSize && !cantBeExtract)
cantBeExtract = toExtract = true; // XXX cantBeExtract ?
if (toExtract || toUpdate || toDisclaim)
allMarkedPtrs.push_back (this);
return cantBeExtract;
}
// ================================================================================
string
Attachment::getContent (ifstream &mbox) const {
DEF_LOG ("Attachment::getContent", "contentPos: " << contentPos);
string content;
content.resize (endPos-contentPos);
mbox.seekg (contentPos, ios::beg);
mbox.read (&content[0], endPos-contentPos);
if (isBase64Encoding ())
base64Decode (content);
if (isQuotedPrintableEnconding ())
quotedDecode (content);
return content;
}
// ================================================================================
void
Attachment::println (ofstream &outbox, string content) const {
DEF_LOG ("Attachment::println", "content: " << content);
if (isBase64Encoding ())
base64Encode (content);
if (isQuotedPrintableEnconding ())
quotedEncode (content);
outbox << content;
if (content.length () && content.back () != '\n')
outbox << endl;
}
// ================================================================================
void
Attachment::replaceEmbedded (string &content) const {
DEF_LOG ("Attachment::replaceEmbedded", "content.length: " << content.length ());
if (!embeddedData.size ())
return;
int imgIdx (-1);
string::size_type startPos (0);
for (const EmbeddedData &embedded : embeddedData) {
LOG ("embedded: " << embedded);
for ( ; ; ) {
startPos = caseInsensitiveFind (content, IMG_BEGIN, startPos);
LOG_BUG (startPos == string::npos, return, "eMailShrinker: bug A7: can't find " << IMG_BEGIN);
++imgIdx;
if (embedded.imgIdx >= imgIdx)
break;
startPos += IMG_BEGIN.length ();
}
startPos = caseInsensitiveFind (content, SRC_BEGIN, startPos);
LOG_BUG (startPos == string::npos, return, "eMailShrinker: bug A8: can't find " << SRC_BEGIN );
startPos += SRC_BEGIN.length ();
const string::size_type endPos (content.find ("\"", startPos));
LOG_BUG (endPos == string::npos, return, "eMailShrinker: bug A9: can't find end of " << SRC_BEGIN );
content.replace (startPos, endPos-startPos, embedded.downloadUrl);
}
}
// ================================================================================
ostream&
kaz::operator << (ostream& os, const Attachment& attachment) {
string prop, sep;
if (attachment.toExtract) { prop = "to extract"; sep = ", "; }
if (attachment.toUpdate) { prop += sep+"need update"; sep = ", "; }
if (attachment.toDisclaim) { prop += sep+"need diclaim"; sep = ", "; }
if (attachment.embeddedData.size ()) { prop += sep+"embeddedData"; }
if (prop.length ())
prop = " ["+prop+"]";
os << setw ((attachment.level % 20)*2) << "" << setw (10) << SizeArg (attachment.getSize ()) << " " << attachment.getContentType ()
<< prop << (attachment.cid.length () ? " id: "+attachment.cid : "")
<< (attachment.boundary.length () ? " boundary: "+attachment.boundary : "")
<< " (" << attachment.beginPos << " / " << attachment.contentPos << " / " << attachment.endPos << ") " << endl;
for (const EmbeddedData &embedded : attachment.embeddedData)
os << setw (((attachment.level+1) % 20)*2) << "" << setw (10) << SizeArg (embedded.dataLength) << " embedded [to extract] " << embedded;
for (const Attachment &sub : attachment.subAttachements) {
os << sub;
}
return os;
}
// ================================================================================

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

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////////////////////////////////////////////////////////////////////////////
// Copyright KAZ 2021 //
// //
// contact (at) kaz.bzh //
// //
// This software is a filter to shrink email by attachment extraction. //
// //
// This software is governed by the CeCILL-B license under French law and //
// abiding by the rules of distribution of free software. You can use, //
// modify and/or redistribute the software under the terms of the //
// CeCILL-B license as circulated by CEA, CNRS and INRIA at the following //
// URL "http://www.cecill.info". //
// //
// As a counterpart to the access to the source code and rights to copy, //
// modify and redistribute granted by the license, users are provided //
// only with a limited warranty and the software's author, the holder of //
// the economic rights, and the successive licensors have only limited //
// liability. //
// //
// In this respect, the user's attention is drawn to the risks associated //
// with loading, using, modifying and/or developing or reproducing the //
// software by the user in light of its specific status of free software, //
// that may mean that it is complicated to manipulate, and that also //
// therefore means that it is reserved for developers and experienced //
// professionals having in-depth computer knowledge. Users are therefore //
// encouraged to load and test the software's suitability as regards //
// their requirements in conditions enabling the security of their //
// systems and/or data to be ensured and, more generally, to use and //
// operate it in the same conditions as regards security. //
// //
// The fact that you are presently reading this means that you have had //
// knowledge of the CeCILL-B license and that you accept its terms. //
////////////////////////////////////////////////////////////////////////////
#include <iostream>
#include <vector>
#include <set>
#include <fstream>
#include <iomanip>
#include <math.h>
#include <algorithm>
#include <unistd.h>
#include "kazDebug.hpp"
#include "kazMisc.hpp"
#include "SizeArg.hpp"
#include "Attachment.hpp"
#include "MainAttachment.hpp"
using namespace std;
using namespace kaz;
static const string KAZ_WEB_SITE = "https://kaz.bzh/";
static const string TMPL_DOWNLOAD = "{{DOWNLOAD}}";
static const string TMPL_FILENAME = "{{FILENAME}}";
static const string CID = "cid:";
static const string KAZ_PLAIN_HR = "______________________________________________________________________________";
static const string KAZ_PLAIN_START = "~~ PJ-KAZ !"; // don't end whith space
static const string KAZ_PLAIN_STOP = KAZ_PLAIN_START+" ~~";
static const string KAZ_PLAIN_DONT_TOUCH = "(concervez cette partie intacte dans votre réponse si vous voulez transmettre les documents précédents)";
static const string KAZ_PLAIN_WARNING = "Attention : Kaz a dépollué ce message. Les pièces jointes ont été retirées et placées dans un dépôt provisoire. Elles seront automatiquement supprimées dans 1 mois. Si elles sont importantes et que vous souhaitez les conserver, vous devez utiliser les liens ci-dessous. Pour mieux comprendre la politique de nos services visitez kaz.bzh";
static const string KAZ_PLAIN_DOWLOAD_ONE = "Vos pièces jointes sont à télécharger individuellement ici :";
static const string KAZ_PLAIN_DOWLOAD_OTHER = "(Contenu dans des messages précédents)";
static const string KAZ_PLAIN_DOWLOAD_ALL = "Vous pouvez télécharger l'ensemble dans une archive là :";
static const string HEAD = "<head>";
static const string HEAD_END = "</head>";
static const string KAZ_CSS_URL = "https://kaz.bzh/m/email.css";
static const string KAZ_CSS = "<link rel=\"stylesheet\" type=\"text/css\" charset=\"utf-8\" href=\""+KAZ_CSS_URL+"\"/>";
static const string A_END = "</a>";
static const string LI_BEGIN = "<li";
static const string CLASS_ONE = "class=\"one\"";
static const string LI_ONE = LI_BEGIN+" "+CLASS_ONE+">";
static const string LI_ALL = LI_BEGIN+" class=\"all\">";
static const string LI_END = "</li>";
static const string HREF_ONE = "href=\"";
static const string BODY_END = "</body>";
static const string HTML_END = "</html>";
static const string KAZ_HTML_TAG = "<!--KAZ"; // don't end whith space
static const string KAZ_HTML_START = KAZ_HTML_TAG+" START-->";
static const string KAZ_HTML_STOP = KAZ_HTML_TAG+" STOP-->";
// Textes précédents encodés en SGML
static const string KAZ_HTML_DONT_TOUCH = "(concervez cette partie intacte dans votre r&eacute;ponse si vous voulez transmettre les documents pr&eacute;c&eacute;dents)";
static const string KAZ_HTML_DOWLOAD_ONE = "Vos pi&egrave;ces jointes sont &agrave; t&eacute;l&eacute;charger individuellement ici :";
static const string KAZ_HTML_DOWLOAD_OTHER = "(Contenu dans des messages pr&eacute;c&eacute;dents)";
static const string KAZ_HTML_DOWLOAD_ALL = "Vous pouvez t&eacute;l&eacute;charger l'ensemble dans une archive l&agrave; :";
static const string KAZ_HTML_ARCHIVE = "archive";
// ================================================================================
vector <string>
Attachment::stringsToUpdate ({KAZ_PLAIN_START, "\""+CID});
// ================================================================================
const string MainAttachment::templatePlainAddLink (" - "+TMPL_DOWNLOAD+" "+TMPL_FILENAME+"\n");
const string MainAttachment::templatePlainAllLink ("\n"+KAZ_PLAIN_DOWLOAD_ALL+"\n * "+TMPL_DOWNLOAD+"\n");
const string MainAttachment::templateHtmlHeader (KAZ_HTML_START+"<p style=\"clear: left; padding: 1pc 0 0 0; font-size:10px; color:#969696;\">"+KAZ_PLAIN_START+"</p><hr>\n"
"<div class=\"kaz\">"
"<p style=\"font-size:10px; color:#969696;\">"+KAZ_HTML_DONT_TOUCH+"</p>\n"
"<p>"+KAZ_HTML_DOWLOAD_ONE+"<ul>\n");
const string MainAttachment::templateHtmlAddLink (LI_ONE+"<a "+HREF_ONE+TMPL_DOWNLOAD+"\">"+TMPL_FILENAME+"</a>"+LI_END+"\n");
const string MainAttachment::templateHtmlOtherLink ("</ul>"+KAZ_HTML_DOWLOAD_OTHER+"<ul>\n");
const string MainAttachment::templateHtmlAllLink ("</ul><ul>"+LI_ALL+KAZ_HTML_DOWLOAD_ALL+" <a href=\""+TMPL_DOWNLOAD+"\">"+KAZ_HTML_ARCHIVE+"</a>"+LI_END+"\n");
const string MainAttachment::templateHtmlFooter ("</ul></p>\n"
"<p class=\"msg\"><a class=\"kaz\" href=\""+KAZ_WEB_SITE+"\"> "+KAZ_WEB_SITE+" </a></p></div>\n"
"<hr><p style=\"font-size:10px; color:#969696;\">"+KAZ_PLAIN_STOP+"</p>"+KAZ_HTML_STOP+"\n");
const regex MainAttachment::whiteSpaceRegEx ("\\s+");
// ================================================================================
void
MainAttachment::copy (ifstream &mbox, ofstream &outbox, const streamoff &begin, const streamoff &end) {
DEF_LOG ("MainAttachment::copy", "begin: " << begin << " end: " << end);
mbox.seekg (begin, ios::beg);
char c;
for (streamoff pos (begin); pos < end; ++pos) {
mbox.get (c);
outbox.put (c);
}
outbox.flush ();
}
// ================================================================================
void
MainAttachment::fillUrlId (string &url, string &id) {
DEF_LOG ("MainAttachment::fillUrlId", "");
url = id = "";
string urlId;
getline (cin, urlId);
LOG ("get URL: " << urlId);
vector<string> urlIdVect { sregex_token_iterator (urlId.begin(), urlId.end (), whiteSpaceRegEx, -1), {} };
if (urlIdVect [0].empty ())
return;
url = urlIdVect [0];
if (urlIdVect.size () > 1)
id = urlIdVect [1];
}
// ================================================================================
void
MainAttachment::setExtractDir (const bfs::path &extractDir) {
if (extractDir.empty ())
throw invalid_argument ("no tmp dir");
this->extractDir = extractDir;
if (! is_directory (extractDir))
bfs::create_directory (extractDir);
}
void
MainAttachment::setArchiveDownloadURL (const string &archiveDownloadURL) {
this->archiveDownloadURL = archiveDownloadURL;
}
// ================================================================================
void
MainAttachment::addLink (string &plain, string &html, const string &url, const string &name) const {
string plainNewOneLink (templatePlainAddLink);
replaceAll (plainNewOneLink, TMPL_DOWNLOAD, url);
replaceAll (plainNewOneLink, TMPL_FILENAME, name);
plain += plainNewOneLink;
string htmlNewOneLink (templateHtmlAddLink);
string codedUrl (url);
replaceAll (codedUrl, "&", "&amp;");
replaceAll (htmlNewOneLink, TMPL_DOWNLOAD, codedUrl);
replaceAll (htmlNewOneLink, TMPL_FILENAME, name);
html += htmlNewOneLink;
}
// ================================================================================
void
MainAttachment::getDisclaim (string &plain, string &html) const {
DEF_LOG ("Attachment::getDisclaim", "");
plain = html = "";
int linkCount (0);
string allId;
string plainNewLinks, htmlNewLinks;
for (Attachment *attachP : allMarkedPtrs) {
if (!attachP->toExtract)
continue;
addLink (plainNewLinks, htmlNewLinks, attachP->downloadUrl, attachP->getAttachName ());
++linkCount;
allId += attachP->downloadId;
// if (previousLinks [attachP->downloadUrl] != previousLinks.end ())
// // impossible puisque le lien est toujours nouveau
// previousLinks.erase (attachP->downloadUrl);
}
for (Attachment *attachP : allMarkedPtrs) {
if (!attachP->embeddedData.size ())
continue;
for (EmbeddedData &embedded : attachP->embeddedData) {
addLink (plainNewLinks, htmlNewLinks, embedded.downloadUrl, embedded.name);
++linkCount;
allId += embedded.downloadId;
}
}
LOG ("allId:" << allId);
string plainOldLinks, htmlOldLinks;
for (map <string, string>::const_iterator it = previousLinks.begin (); it != previousLinks.end (); ++it)
addLink (plainOldLinks, htmlOldLinks, it->first, it->second);
linkCount += previousLinks.size ();
if (! linkCount) {
LOG ("no attach");
return;
}
plain = "\n"+KAZ_PLAIN_START+"\n"+KAZ_PLAIN_HR+"\n"+KAZ_PLAIN_DONT_TOUCH+"\n\n"+KAZ_PLAIN_WARNING+"\n\n"+KAZ_PLAIN_DOWLOAD_ONE+"\n"+plainNewLinks;
html = templateHtmlHeader+htmlNewLinks;
if (previousLinks.size ()) {
plain += KAZ_PLAIN_DOWLOAD_OTHER+"\n"+plainOldLinks;
html += templateHtmlOtherLink+htmlOldLinks;
}
if (linkCount > 1 && archiveDownloadURL.length ()) {
string allPlainLinks (templatePlainAllLink);
replaceAll (allPlainLinks, TMPL_DOWNLOAD, archiveDownloadURL+allId);
plain += allPlainLinks;
string allLinks (templateHtmlAllLink);
// allId => & => &amp; done
replaceAll (allLinks, TMPL_DOWNLOAD, archiveDownloadURL+allId);
html += allLinks;
}
html += templateHtmlFooter;
plain += "\n\n"+KAZ_WEB_SITE+"\n"+KAZ_PLAIN_HR+"\n"+KAZ_PLAIN_STOP+"\n";
// & => &amp; done
LOG ("plain: " << plain);
LOG ("html: " << html);
}
// ================================================================================
void
MainAttachment::addPrevious (const string &href, const string &name) {
DEF_LOG ("Attachment::addPrevious", "href: " << href << " name: " << name);
const string oldVal = previousLinks [href];
if (name.empty ())
return;
previousLinks.erase (href);
previousLinks [href] = name;
LOG ("inserted: " << href << ": " << previousLinks[href]);
}
void
MainAttachment::extractLinks (const string &extractedPlainKAZ) {
DEF_LOG ("Attachment::extractedPlainKAZ", "extractedPlainKAZ: " << extractedPlainKAZ);
for (string::size_type startPos (0);
(startPos = extractedPlainKAZ.find ("http", startPos)) != string::npos;
) {
streamoff stopPos = startPos;
while (extractedPlainKAZ [stopPos] && availableURLChars.find (extractedPlainKAZ [stopPos]) != string::npos)
++stopPos;
const string href (extractedPlainKAZ.substr (startPos, stopPos-startPos));
LOG ("plain href: " << href);
if (extractedPlainKAZ [stopPos] && extractedPlainKAZ [stopPos] != '\n')
++stopPos;
startPos = stopPos;
// get all href but KAZ_WEB_SITE
// the archive link while be skip by filter.sh
if (href == KAZ_WEB_SITE)
continue;
while (extractedPlainKAZ [stopPos] && extractedPlainKAZ [stopPos] != '\n')
++stopPos;
const string name (extractedPlainKAZ.substr (startPos, stopPos-startPos));
LOG ("plain name: " << name);
addPrevious (href, name);
}
}
// ================================================================================
void
MainAttachment::extractLinks (const vector<string> &liOne) {
DEF_LOG ("Attachment::extractedPlainKAZ", "liOne.size: " << liOne.size ());
for (const string &one : liOne) {
if (caseInsensitiveFind (one, CLASS_ONE) == string::npos)
continue;
string::size_type startPos = caseInsensitiveFind (one, HREF_ONE);
LOG_BUG (startPos == string::npos, continue, "eMailShrinker: bug M1: no href KAZ link. (one: " << one << ")");
startPos += HREF_ONE.length ();
LOG ("startPos: " << startPos);
string::size_type stopPos = one.find ("\"", startPos);
LOG_BUG (stopPos == string::npos, break, "eMailShrinker: bug M2: no ending href KAZ link. (one: " << one << ")");
LOG ("stopPos: " << stopPos);
string href (one.substr (startPos, stopPos-startPos));
LOG ("html href: " << href);
stopPos = one.find (">", startPos);
LOG_BUG (one [stopPos] != '>', break, "eMailShrinker: bug M3: no ending href KAZ link. (one: " << one << ")");
++stopPos;
startPos = stopPos;
LOG ("startPos: " << startPos);
stopPos = caseInsensitiveFind (one, A_END, startPos);
LOG ("stopPos: " << stopPos);
LOG_BUG (stopPos == string::npos, break, "eMailShrinker: bug M4: no ending anchor KAZ link. (one: " << one << ")");
string name (one.substr (startPos, stopPos-startPos));
LOG ("html name: " << name);
addPrevious (href, name);
}
}
void
MainAttachment::extractPreviousKAZ (ifstream &mbox) {
DEF_LOG ("MainAttachment::extractPreviousKAZ", "");
string extractedPlainKAZ, extractedHtmlKAZ;
for (const Attachment *attachP : allMarkedPtrs) {
if (!attachP->toUpdate || isBase64Encoding ())
continue;
string textProp = attachP->getProp (contentTypeToken, textRegEx);
if (textProp.empty ())
continue;
string content (attachP->getContent (mbox));
if (textProp == PLAIN) {
LOG (PLAIN);
extractedPlainKAZ += attachP->getSection (content, KAZ_PLAIN_START, KAZ_PLAIN_STOP);
}
if (textProp == HTML) {
LOG (HTML);
string section = attachP->getSection (content, KAZ_HTML_START, KAZ_HTML_STOP);
section += attachP->getSection (content, KAZ_PLAIN_START, KAZ_PLAIN_STOP);
// update href from HTML attachments
replaceAll (section, "&amp;", "&");
extractedHtmlKAZ += section;
}
}
LOG ("extractedPlainKAZ: "<< extractedPlainKAZ);
extractLinks (extractedPlainKAZ);
LOG ("extractedHtmlKAZ: "<< extractedHtmlKAZ);
vector<string> liOne;
getSection (extractedHtmlKAZ, LI_BEGIN, LI_END, liOne);
extractLinks (liOne);
#ifndef DISABLE_LOG
for (map <string, string>::const_iterator it = previousLinks.begin (); it != previousLinks.end (); ++it)
LOG ("oldLink link: " << it->first << " name: " << it->second);
#endif
}
void
MainAttachment::removePreviousArchive () {
vector<string> toRemove;
for (map <string, string>::const_iterator it = previousLinks.begin (); it != previousLinks.end (); ++it)
if (it->first.find ("&l=/") != string::npos)
toRemove.push_back (it->first);
for (string old : toRemove)
previousLinks.erase (old);
}
// ================================================================================
MainAttachment::MainAttachment (ifstream &mbox)
: Attachment (mbox, initTmpLevel (), 0, initTmpPos ()) {
DEF_LOG ("MainAttachment::MainAttachment", "");
string line;
for (; getline (mbox, line); )
tmpPos += line.length () + 1;
endPos = tmpPos;
}
// ================================================================================
void
MainAttachment::markSignificant (const streamoff &minAttachSize, ifstream &mbox) {
DEF_LOG ("MainAttachment::markSignificant", "minAttachSize: " << minAttachSize);
bool plainMarked (false), htmlMarked (false);
markDisclaim (plainMarked, htmlMarked);
Attachment::markSignificant ("", minAttachSize, mbox, allMarkedPtrs);
}
// ================================================================================
void
MainAttachment::getUpdatedURL (ifstream &mbox) {
DEF_LOG ("MainAttachment::getUpdatedURL", "");
extractPreviousKAZ (mbox);
for (map <string, string>::iterator it = previousLinks.begin (); it != previousLinks.end (); ++it)
cout << it->first << endl;
}
void
MainAttachment::newPjEntry (const int &attachCount, const string &contentType, const string &name, string &dirName, string &mediaName) const {
DEF_LOG ("MainAttachment::newPjEntry", "attachCount: " << attachCount << " contentType: " << contentType << " name: " << name);
ostringstream dirNameStream;
dirNameStream << "PJ-" << std::setfill ('0') << std::setw (3) << int (attachCount);
dirName = dirNameStream.str ();
bfs::path dirPath (extractDir / dirName);
bfs::create_directory (dirPath);
bfs::path metaPath (dirPath / "meta");
ofstream metaOut (metaPath.c_str ());
metaOut
<< "Content-Type: " << contentType << endl
<< "Name: " << name << endl;
metaOut.flush ();
metaOut.close ();
bfs::path filePath (dirPath / "media");
mediaName = filePath.c_str ();
dirName = dirPath.c_str ();
LOG ("dirName: " << dirName << " mediaName: " << mediaName);
}
// ================================================================================
void
MainAttachment::extract (ifstream &mbox, const SizeArg &minSize) const {
DEF_LOG ("MainAttachment::extract", "minSize: " << minSize);
int attachCount (0);
string dirName, mediaName;
for (Attachment *attachP : allMarkedPtrs) {
if (!attachP->toExtract)
continue;
newPjEntry (attachCount, attachP->getContentType (), attachP->getAttachName (), dirName, mediaName);
++attachCount;
ofstream out (mediaName);
streamoff
start (attachP->Attachment::contentPos),
end (attachP->Attachment::endPos+1); // pour assurer le cas sans ^M
mbox.seekg (start, ios::beg);
if (attachP->isBase64Encoding ()) {
unsigned char buff[4];
int idx = 0;
char c;
for (streamoff curPos (start); mbox.get (c) && curPos < end; ++curPos) {
if (c == '=')
break;
if (!isBase64 (c))
continue;
buff [idx] = getBase64Val (c);
if (++idx != 4)
continue;
out.put (buff [0] << 2 | (buff [1] & 0x30) >> 4);
out.put (buff [1] << 4 | (buff [2] & 0x3c) >> 2);
out.put (buff [2] << 6 | buff [3]);
idx = 0;
}
if (idx) {
for (int j = idx; j < 4; ++j)
buff [j] = 0;
out.put (buff [0] << 2 | (buff [1] & 0x30) >> 4);
--idx;
if (idx)
out.put (buff [1] << 4 | (buff [2] & 0x3c) >> 2);
}
} else {
string line;
for (streamoff curPos (start); getline (mbox, line); ) {
curPos += line.length () + 1;
if (curPos >= end) {
out << line.substr (0, end + line.length () - curPos) << endl;
break;
}
out << line << endl;
}
}
out.flush ();
out.close ();
cout << dirName << endl;
}
for (Attachment *attachP : allMarkedPtrs) {
if (!attachP->embeddedData.size ())
continue;
string content = attachP->getContent (mbox);
vector<string> imgs;
getSection (content, IMG_BEGIN, IMG_END, imgs);
for (const EmbeddedData &embedded : attachP->embeddedData) {
string &img (imgs[embedded.imgIdx]);
img.erase (0, embedded.startData);
img.erase (embedded.dataLength);
base64Decode (img);
newPjEntry (attachCount, embedded.contentType, embedded.name, dirName, mediaName);
++attachCount;
ofstream out (mediaName);
out.write (img.c_str (), img.size ());
out.flush ();
out.close ();
cout << dirName << endl;
}
}
}
// ================================================================================
void
MainAttachment::substitute (ifstream &mbox, ofstream &outbox, const SizeArg &minSize) {
DEF_LOG ("MainAttachment::substitute", "minSize: " << minSize);
// preparation
extractPreviousKAZ (mbox);
removePreviousArchive ();
map<const string, const string> translateHtml;
for (Attachment *attachP : allMarkedPtrs)
if (attachP->toExtract) {
fillUrlId (attachP->downloadUrl, attachP->downloadId);
if (attachP->downloadUrl.empty ()) {
LOG ("no change");
attachP->toExtract = false;
continue;
}
if (attachP->cid.length ()) {
string tmp (attachP->downloadUrl);
replaceAll (tmp, "&", "&amp;");
translateHtml.insert (pair<const string, const string> (CID+attachP->cid, tmp));
}
}
for (Attachment *attachP : allMarkedPtrs) {
if (!attachP->embeddedData.size ())
continue;
for (EmbeddedData &embedded : attachP->embeddedData)
fillUrlId (embedded.downloadUrl, embedded.downloadId);
}
string plainDisclaim, htmlDisclaim;
getDisclaim (plainDisclaim, htmlDisclaim);
// copy email
streamoff curPos = 0;
for (Attachment *attachP : allMarkedPtrs) {
copy (mbox, outbox, curPos, attachP->beginInParent);
LOG_BUG (attachP->toUpdate && attachP->toExtract, /**/, "eMailShrinker: bug M5: update and extract. pos: " << attachP->beginPos);
if (attachP->toExtract) {
LOG ("skip Extracted");
} else if (attachP->toUpdate) {
string textProp = attachP->getProp (contentTypeToken, textRegEx);
bool isPlain = textProp == PLAIN;
bool isHtml = textProp == HTML;
bool isDisclaimer = attachP->toDisclaim;
LOG_BUG (isPlain && isHtml, /**/, "eMailShrinker: bug M6: plain and html: " << attachP->getContentType ());
LOG_BUG (! (isPlain || isHtml), /**/, "eMailShrinker: bug M7: not plain or html: " << attachP->getContentType ());
LOG ("toUpdate: isPlain: " << isPlain << " isHtml: " << isHtml << " isDisclaimer: " << isDisclaimer);
copy (mbox, outbox, attachP->beginInParent, attachP->contentPos);
string content = attachP->getContent (mbox);
if (isHtml) {
string::size_type headStart (caseInsensitiveFind (content, HEAD));
LOG ("HEAD start: " << headStart);
if (headStart != string::npos) {
headStart += HEAD.length ();
string::size_type headStop (caseInsensitiveFind (content, HEAD_END, headStart));
if (headStop != string::npos) {
// to reduce the scoop of search
string oldHead (content.substr (headStart, headStop-headStart));
LOG ("HEAD start: " << headStart << " stop: " << headStop << " old: " << oldHead);
string::size_type oldCssPos (oldHead.find (KAZ_CSS_URL));
if (oldCssPos != string::npos) {
string::size_type oldStart (oldHead.rfind ('<', oldCssPos));
string::size_type oldStop (oldHead.find ('>', oldCssPos));
if (oldStart != string::npos && oldStop != string::npos) {
++oldStop;
if (oldStop < oldHead.length () && oldHead [oldStop] == '\n')
++oldStop;
content.erase (headStart+oldStart, oldStop-oldStart);
}
}
content.insert (headStart, "\n"+KAZ_CSS);
}
// else XXX pas de /head (if faut en ajouter un (avec <html> ?))
}
removeSection (content, KAZ_HTML_START, KAZ_HTML_STOP);
removeSection (content, KAZ_PLAIN_START, KAZ_PLAIN_STOP);
// XXX case insensitive ??
if (content.find (CID) != string::npos)
replaceAll (content, translateHtml);
attachP->replaceEmbedded (content);
}
if (isPlain)
removeSection (content, KAZ_PLAIN_START, KAZ_PLAIN_STOP);
if (isDisclaimer) {
if (isHtml) {
for (string endTag : {BODY_END, HTML_END}) {
LOG ("try tag: " << endTag);
string::size_type endTagStart = caseInsensitiveRFind (content, endTag);
if (endTagStart != string::npos) {
content = content.substr (0, endTagStart);
LOG ("remove tag: " << endTag << " content: " << content);
}
}
content += htmlDisclaim+BODY_END+HTML_END;
LOG ("content: " << content);
}
if (isPlain)
content += plainDisclaim;
}
attachP->println (outbox, content);
} else {
LOG_BUG (true, continue, "eMailShrinker: bug M8: can't change" << *attachP);
}
outbox.flush ();
curPos = attachP->endPos;
}
copy (mbox, outbox, curPos, endPos);
outbox.close ();
}
// ================================================================================

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////////////////////////////////////////////////////////////////////////////
// Copyright KAZ 2021 //
// //
// contact (at) kaz.bzh //
// //
// This software is a filter to shrink email by attachment extraction. //
// //
// This software is governed by the CeCILL-B license under French law and //
// abiding by the rules of distribution of free software. You can use, //
// modify and/or redistribute the software under the terms of the //
// CeCILL-B license as circulated by CEA, CNRS and INRIA at the following //
// URL "http://www.cecill.info". //
// //
// As a counterpart to the access to the source code and rights to copy, //
// modify and redistribute granted by the license, users are provided //
// only with a limited warranty and the software's author, the holder of //
// the economic rights, and the successive licensors have only limited //
// liability. //
// //
// In this respect, the user's attention is drawn to the risks associated //
// with loading, using, modifying and/or developing or reproducing the //
// software by the user in light of its specific status of free software, //
// that may mean that it is complicated to manipulate, and that also //
// therefore means that it is reserved for developers and experienced //
// professionals having in-depth computer knowledge. Users are therefore //
// encouraged to load and test the software's suitability as regards //
// their requirements in conditions enabling the security of their //
// systems and/or data to be ensured and, more generally, to use and //
// operate it in the same conditions as regards security. //
// //
// The fact that you are presently reading this means that you have had //
// knowledge of the CeCILL-B license and that you accept its terms. //
////////////////////////////////////////////////////////////////////////////
#include <regex>
#include <boost/format.hpp>
#include <boost/lexical_cast.hpp>
#include "kazDebug.hpp"
#include "SizeArg.hpp"
using namespace std;
using namespace kaz;
// ================================================================================
SizeArg::SizeArg (const size_t &bytes)
: bytes (bytes) {
}
SizeArg::SizeArg (const string &option)
: bytes (0) {
init (option);
}
void
SizeArg::init (const string &token) {
DEF_LOG ("SizeArg::init", "token: " << token);
static const string prefix ("KMGTPEZY");
static const regex formatRegEx ("([0-9]+) *([k"+prefix+"]?)(i?)");
if (!regex_match (token.begin (), token.end (), formatRegEx))
throw invalid_argument ("Bad size");
bytes = boost::lexical_cast<uint64_t> (regex_replace (token, formatRegEx, "$1"));
const string v2 (regex_replace (token, formatRegEx, "$2"));
size_t index = prefix.find (v2);
if (v2.length ()) {
if (index == string::npos)
index = 0; // "k" case
++index;
}
bytes *= pow (regex_replace (token, formatRegEx, "$3").empty () ? 1000 : 1024, index);
LOG ("token:" << token << " index:" << index << " v2:<" << v2 << ">" << " b:" << bytes);
}
// ================================================================================
ostream &
kaz::operator << (ostream &out, const SizeArg &sizeArg) {
static string sizes [] = {"", "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi", "Yi"};
if (!sizeArg.bytes)
return out << "0 byte";
int nbBytes = (int) floor (log (sizeArg.bytes) / log (1024));
double val ((sizeArg.bytes / pow (1024, nbBytes)));
return out << boost::str (boost::format(nbBytes ? "%.2f " : val == 1 ? "%.0f byte" : + "%.0f bytes") % val) + sizes [nbBytes];
}
istream &
kaz::operator >> (istream &in, SizeArg &sizeArg) {
string token;
in >> token;
try {
sizeArg.init (token);
} catch (...) {
in.setstate (ios_base::failbit);
}
return in;
}
// ================================================================================

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////////////////////////////////////////////////////////////////////////////
// Copyright KAZ 2021 //
// //
// contact (at) kaz.bzh //
// //
// This software is a filter to shrink email by attachment extraction. //
// //
// This software is governed by the CeCILL-B license under French law and //
// abiding by the rules of distribution of free software. You can use, //
// modify and/or redistribute the software under the terms of the //
// CeCILL-B license as circulated by CEA, CNRS and INRIA at the following //
// URL "http://www.cecill.info". //
// //
// As a counterpart to the access to the source code and rights to copy, //
// modify and redistribute granted by the license, users are provided //
// only with a limited warranty and the software's author, the holder of //
// the economic rights, and the successive licensors have only limited //
// liability. //
// //
// In this respect, the user's attention is drawn to the risks associated //
// with loading, using, modifying and/or developing or reproducing the //
// software by the user in light of its specific status of free software, //
// that may mean that it is complicated to manipulate, and that also //
// therefore means that it is reserved for developers and experienced //
// professionals having in-depth computer knowledge. Users are therefore //
// encouraged to load and test the software's suitability as regards //
// their requirements in conditions enabling the security of their //
// systems and/or data to be ensured and, more generally, to use and //
// operate it in the same conditions as regards security. //
// //
// The fact that you are presently reading this means that you have had //
// knowledge of the CeCILL-B license and that you accept its terms. //
////////////////////////////////////////////////////////////////////////////
#define LAST_VERSION "eMailShrinker 1.3 2021-04-04"
#include <iostream>
#include <fstream>
#include <string>
#include <chrono>
#include <boost/program_options.hpp>
#include <boost/filesystem.hpp>
#include "kazDebug.hpp"
#include "kazMisc.hpp"
#include "SizeArg.hpp"
#include "MainAttachment.hpp"
using namespace std;
using namespace boost;
using namespace boost::program_options;
using namespace kaz;
// ================================================================================
static options_description mainDescription ("Main options", getCols ());
static options_description hide ("Hidded options", getCols ());
static char *prog = NULL;
// ================================================================================
void
usage (const string &msg = "", const bool &hidden = false) {
if (!msg.empty ()) {
cout << msg << endl;
exit (1);
}
cout << endl
<< "Usage: " << endl
<< " A) " << prog << " -u mbox > url-list" << endl
<< " B) " << prog << " [-s size] [-d dirName}] mbox > file-list" << endl
<< " C) " << prog << " [-s size] [-a url] mbox altered-mbox < url-list" << endl
<< endl << " filter attachments" << endl << endl
<< " A: list previous embded url need to be refresh (no added option)" << endl
<< " => downloadURL list" << endl
<< " B: attachment extraction (options : s, d)" << endl
<< " => list of (filename)" << endl
<< " C: attachment replace with url (options : s) " << endl
<< " <= list of (downloadURL [id])" << endl
<< endl << mainDescription
<< endl;
if (hidden)
cout << hide << endl;
exit (0);
}
void
version () {
cout << LAST_VERSION << " KAZ team production (https://kaz.bzh/)" << endl;
exit (0);
}
static auto startPrg = std::chrono::high_resolution_clock::now ();
void
showTime (string msg) {
using namespace std::chrono;
static auto stopPrg = high_resolution_clock::now ();
cerr << msg << " done in " << ns2string (duration_cast<duration<double> > (stopPrg-startPrg).count ()) << endl;
}
// ================================================================================
static const string inputFile = "input-file";
static const char *const inputFileC = inputFile.c_str ();
int
main (int argc, char** argv) {
// XXX debug before parse options
// Log::debug = true;
DEF_LOG ("main:", "");
prog = argv [0];
bool
debugFlag (false),
helpFlag (false),
versionFlag (false),
updateListFlag (false),
useTheForceLuke (false),
listFlag (false);
string inputName, outputName, archiveDownloadURL;
bfs::path extractDir (bfs::temp_directory_path ());
SizeArg minAttachSize ("48 Ki");
try {
mainDescription.add_options ()
("help,h", bool_switch (&helpFlag), "produce this help message")
("version,v", bool_switch (&versionFlag), "display version information")
("size,s", value<SizeArg> (&minAttachSize)->default_value (minAttachSize), "minimum size for extration")
("updateList,u", bool_switch (&updateListFlag), "list URL need refresh")
("extractDir,d", value<bfs::path> (&extractDir)->default_value (extractDir), "set tmp directory name for extraction")
("archiveDownloadURL,a", value<string> (&archiveDownloadURL)->default_value (archiveDownloadURL), "set url root web site to get bundle (like https://file.kaz.bzh/t.php?)")
;
hide.add_options ()
("useTheForceLuke", bool_switch (&useTheForceLuke), "display hidded options")
("list,l", bool_switch (&listFlag), "get attachment list")
("debug,g", bool_switch (&debugFlag), "debug mode")
;
options_description cmd ("All options");
cmd.add (mainDescription).add (hide).add_options ()
(inputFileC, value<vector<string> > (), "input")
;
positional_options_description p;
p.add (inputFileC, -1);
variables_map vm;
basic_parsed_options<char> parsed = command_line_parser (argc, argv).options (cmd).positional (p).run ();
store (parsed, vm);
notify (vm);
if (debugFlag) {
#ifdef DISABLE_LOG
cerr << "No debug option available (was compiled with -DDISABLE_LOG)" << endl;
#endif
}
Log::debug = debugFlag;
if (useTheForceLuke)
usage ("", true);
if (versionFlag)
version ();
if (helpFlag)
usage ();
if (vm.count (inputFileC)) {
vector<string> var = vm[inputFileC].as<vector<string> > ();
int nbArgs = vm[inputFileC].as<vector<string> > ().size ();
if (!nbArgs)
usage ("No input file(s)");
inputName = var [0];
if (nbArgs > 1)
outputName = var [1];
if (nbArgs > 2)
usage ("Too much arguments");
}
} catch (std::exception &e) {
cerr << "error: " << e.what() << endl;
usage ();
return 1;
} catch (...) {
cerr << "Exception of unknown type!" << endl;
return 1;
}
LOG ("minAttachSize: " << minAttachSize);
if (inputName.empty ())
usage ("no input file");
// input mbox file
ifstream mbox (inputName);
MainAttachment attachment (mbox);
mbox.close ();
if (attachment.getBoundary ().empty ()) {
cerr << "no attachment" << endl;
return 1;
}
// parse structure
mbox.open (inputName);
attachment.markSignificant (minAttachSize, mbox);
mbox.close ();
if (listFlag)
// debug
cerr << attachment;
if (updateListFlag) {
// update
mbox.open (inputName);
attachment.getUpdatedURL (mbox);
showTime ("Find old links");
return 0;
}
if (outputName.empty ()) {
// extract
attachment.setExtractDir (extractDir);
mbox.open (inputName);
attachment.extract (mbox, minAttachSize);
showTime ("Extraction");
return 0;
}
// substitute
if (archiveDownloadURL.length ())
attachment.setArchiveDownloadURL (archiveDownloadURL);
mbox.open (inputName);
ofstream outbox (outputName);
attachment.substitute (mbox, outbox, minAttachSize);
showTime ("Substitution");
return 0;
}
// ================================================================================

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////////////////////////////////////////////////////////////////////////////
// Copyright KAZ 2021 //
// //
// contact (at) kaz.bzh //
// //
// This software is a filter to shrink email by attachment extraction. //
// //
// This software is governed by the CeCILL-B license under French law and //
// abiding by the rules of distribution of free software. You can use, //
// modify and/or redistribute the software under the terms of the //
// CeCILL-B license as circulated by CEA, CNRS and INRIA at the following //
// URL "http://www.cecill.info". //
// //
// As a counterpart to the access to the source code and rights to copy, //
// modify and redistribute granted by the license, users are provided //
// only with a limited warranty and the software's author, the holder of //
// the economic rights, and the successive licensors have only limited //
// liability. //
// //
// In this respect, the user's attention is drawn to the risks associated //
// with loading, using, modifying and/or developing or reproducing the //
// software by the user in light of its specific status of free software, //
// that may mean that it is complicated to manipulate, and that also //
// therefore means that it is reserved for developers and experienced //
// professionals having in-depth computer knowledge. Users are therefore //
// encouraged to load and test the software's suitability as regards //
// their requirements in conditions enabling the security of their //
// systems and/or data to be ensured and, more generally, to use and //
// operate it in the same conditions as regards security. //
// //
// The fact that you are presently reading this means that you have had //
// knowledge of the CeCILL-B license and that you accept its terms. //
////////////////////////////////////////////////////////////////////////////
#define LAST_VERSION "1.0 2021-02-21 jirafeauAPI"
#include <iostream>
#include <string>
#include <curl/curl.h>
#include <chrono>
#include <boost/program_options.hpp>
#include <boost/filesystem.hpp>
#include "kazDebug.hpp"
#include "kazMisc.hpp"
#include "SizeArg.hpp"
using namespace std;
using namespace boost;
using namespace boost::program_options;
using namespace kaz;
namespace bfs = boost::filesystem;
// ================================================================================
static options_description mainDescription ("Main options", getCols ());
static options_description hide ("Hidded options", getCols ());
static char *prog = NULL;
// ================================================================================
void
usage (const string &msg = "", const bool &hidden = false) {
if (!msg.empty ()) {
cout << msg << endl;
exit (1);
}
cout << endl
<< "Usage: " << endl
<< " A) " << prog << " [-s size] [-t period] [-c content-type] [-n attachName] [-f server] send file [password] > url,delCode" << endl
<< " B) " << prog << " [-t period] [-f server] update ref > dealine" << endl
<< endl << " store ficle" << endl << endl
<< " A: send file (options : s, t)" << endl
<< " B: update deadline (options : t) " << endl
<< endl << mainDescription
<< endl;
if (hidden)
cout << hide << endl;
exit (0);
}
void
version () {
cout << LAST_VERSION << " KAZ team production (https://kaz.bzh/)" << endl;
exit (0);
}
static auto startPrg = std::chrono::high_resolution_clock::now ();
void
showTime (string msg) {
using namespace std::chrono;
static auto stopPrg = high_resolution_clock::now ();
cerr << msg << " done in " << ns2string (duration_cast<duration<double> > (stopPrg-startPrg).count ()) << endl;
}
// ================================================================================
static size_t
WriteCallback (void *contents, size_t size, size_t nmemb, void *userp) {
((std::string*) userp)->append ((char*) contents, size * nmemb);
return size * nmemb;
}
// ================================================================================
static const string inputFile = "input-file";
static const char *const inputFileC = inputFile.c_str ();
int
main (int argc, char** argv) {
// XXX debug before parse options
// Log::debug = true;
DEF_LOG ("main:", "");
prog = argv [0];
bool
debugFlag (false),
helpFlag (false),
versionFlag (false),
useTheForceLuke (false);
enum JirCmd { SEND, UPDATE } jirCmd;
string
inputFileName,
password,
contentType,
attachName,
urlBase ("http://file.kaz.bzh"),
apiPage ("/script.php"),
downloadPage ("/f.php"),
minimumAvailability ("month"),
proxy;
SizeArg maxUploadSize ("100 Mi");
try {
mainDescription.add_options ()
("help,h", bool_switch (&helpFlag), "produce this help message")
("version,v", bool_switch (&versionFlag), "display version information")
("contentType,c", value<string> (&contentType)->default_value (contentType), "content-type of the sended file")
("attachName,n", value<string> (&attachName)->default_value (attachName), "force attachment name")
("minimumAvailability,t", value<string> (&minimumAvailability)->default_value (minimumAvailability), "minimum period of available download")
("maxUploadSize,s", value<SizeArg> (&maxUploadSize)->default_value (maxUploadSize), "maximum upload size")
("file server registery,f", value<string> (&urlBase)->default_value (urlBase), "server where file are temporary stored")
;
hide.add_options ()
("useTheForceLuke", bool_switch (&useTheForceLuke), "display hidded options")
("debug,g", bool_switch (&debugFlag), "debug mode")
("proxy,p", value<string> (&proxy)->default_value (proxy), "set proxy (proxy-host.org:8080)")
("uploadPage,u", value<string> (&apiPage)->default_value (apiPage), "upload page")
("downloadPage,d", value<string> (&downloadPage)->default_value (downloadPage), "download page")
;
options_description cmd ("All options");
cmd.add (mainDescription).add (hide).add_options ()
(inputFileC, value<vector<string> > (), "input")
;
positional_options_description p;
p.add (inputFileC, -1);
variables_map vm;
basic_parsed_options<char> parsed = command_line_parser (argc, argv).options (cmd).positional (p).run ();
store (parsed, vm);
notify (vm);
if (debugFlag) {
#ifdef DISABLE_LOG
cerr << "No debug option available (was compiled with -DDISABLE_LOG)" << endl;
#endif
}
Log::debug = debugFlag;
if (useTheForceLuke)
usage ("", true);
if (versionFlag)
version ();
if (helpFlag)
usage ();
if (vm.count (inputFileC)) {
vector<string> var = vm[inputFileC].as<vector<string> > ();
int nbArgs = vm[inputFileC].as<vector<string> > ().size ();
if (!nbArgs)
usage ("No command");
if (var [0].compare ("send") == 0)
jirCmd = SEND;
else if (var [0].compare ("update") == 0)
jirCmd = UPDATE;
else
usage ("Unknown command ("+var [0]+")");
if (nbArgs < 2)
usage ("no input file");
inputFileName = var [1];
if (nbArgs == 3)
password = var [2];
if (nbArgs > 3)
usage ("Too much arguments");
}
} catch (std::exception &e) {
cerr << "error: " << e.what() << endl;
usage ();
return 1;
} catch (...) {
cerr << "Exception of unknown type!" << endl;
return 1;
}
if (inputFileName.empty ())
usage ("no input");
CURL *easyhandle = curl_easy_init ();
if (! easyhandle) {
cerr << "no curl" << endl;
return 1;
}
string readBuffer;
if (proxy.length ())
curl_easy_setopt(easyhandle, CURLOPT_PROXY, proxy.c_str ());
curl_easy_setopt (easyhandle, CURLOPT_WRITEFUNCTION, WriteCallback);
curl_easy_setopt (easyhandle, CURLOPT_WRITEDATA, &readBuffer);
curl_mime *multipart = curl_mime_init (easyhandle);
curl_mimepart *part = nullptr;
switch (jirCmd) {
case SEND: {
LOG ("SEND: " << (urlBase+apiPage));
curl_easy_setopt (easyhandle, CURLOPT_URL, (urlBase+apiPage).c_str ());
LOG ("maxUploadSize: " << maxUploadSize);
long uploadsize = (size_t) maxUploadSize;
curl_easy_setopt (easyhandle, CURLOPT_INFILESIZE, uploadsize);
LOG ("time: " << minimumAvailability);
part = curl_mime_addpart (multipart);
curl_mime_name (part, "time");
curl_mime_data (part, minimumAvailability.c_str (), CURL_ZERO_TERMINATED);
if (password.size ()) {
LOG ("key: " << password);
part = curl_mime_addpart (multipart);
curl_mime_name (part, "key");
curl_mime_data (part, password.c_str (), CURL_ZERO_TERMINATED);
}
LOG ("inputFileName: " << bfs::path (inputFileName).filename ());
part = curl_mime_addpart (multipart);
curl_mime_name (part, "file");
if (contentType.length ()) {
LOG ("contentType: " << contentType);
curl_mime_type (part, contentType.c_str ());
}
if (attachName.empty ()) {
attachName = bfs::path (inputFileName).filename ().c_str ();
LOG ("attachName: " << attachName);
}
curl_mime_filename (part, attachName.c_str ());
FILE *fp = fopen (inputFileName.c_str (), "r");
fseek (fp, 0L, SEEK_END);
long int fsize (ftell (fp));
fseek (fp, 0L, SEEK_SET);
curl_mime_data_cb (part, fsize,
(curl_read_callback) fread,
(curl_seek_callback) fseek,
NULL, //(curl_seek_callback) fclose,
fp);
}
break;
case UPDATE: {
LOG ("UPDATE: " << (urlBase+downloadPage));
curl_easy_setopt (easyhandle, CURLOPT_URL, (urlBase+downloadPage).c_str ());
LOG ("h: " << inputFileName);
part = curl_mime_addpart (multipart);
curl_mime_name (part, "h");
curl_mime_data (part, inputFileName.c_str (), CURL_ZERO_TERMINATED);
LOG ("u: " << minimumAvailability);
part = curl_mime_addpart (multipart);
curl_mime_name (part, "u");
curl_mime_data (part, minimumAvailability.c_str (), CURL_ZERO_TERMINATED);
}
break;
}
curl_easy_setopt (easyhandle, CURLOPT_MIMEPOST, multipart);
curl_easy_perform (easyhandle);
curl_easy_cleanup (easyhandle);
cout << readBuffer << endl;
showTime ("Upload");
return 0;
}
// ================================================================================

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////////////////////////////////////////////////////////////////////////////
// Copyright KAZ 2021 //
// //
// contact (at) kaz.bzh //
// //
// This software is a filter to shrink email by attachment extraction. //
// //
// This software is governed by the CeCILL-B license under French law and //
// abiding by the rules of distribution of free software. You can use, //
// modify and/or redistribute the software under the terms of the //
// CeCILL-B license as circulated by CEA, CNRS and INRIA at the following //
// URL "http://www.cecill.info". //
// //
// As a counterpart to the access to the source code and rights to copy, //
// modify and redistribute granted by the license, users are provided //
// only with a limited warranty and the software's author, the holder of //
// the economic rights, and the successive licensors have only limited //
// liability. //
// //
// In this respect, the user's attention is drawn to the risks associated //
// with loading, using, modifying and/or developing or reproducing the //
// software by the user in light of its specific status of free software, //
// that may mean that it is complicated to manipulate, and that also //
// therefore means that it is reserved for developers and experienced //
// professionals having in-depth computer knowledge. Users are therefore //
// encouraged to load and test the software's suitability as regards //
// their requirements in conditions enabling the security of their //
// systems and/or data to be ensured and, more generally, to use and //
// operate it in the same conditions as regards security. //
// //
// The fact that you are presently reading this means that you have had //
// knowledge of the CeCILL-B license and that you accept its terms. //
////////////////////////////////////////////////////////////////////////////
#include <iomanip>
#include <sstream>
#include <boost/date_time/posix_time/posix_time.hpp>
#include <boost/chrono.hpp>
#include "kazDebug.hpp"
using namespace std;
using namespace kaz;
bool
Log::debug = false;
size_t
Log::indent = 0;
// ================================================================================
string
Log::getLocalTimeStr () {
using namespace boost::posix_time;
using namespace std;
ptime now = second_clock::second_clock::local_time ();
stringstream ss;
auto date = now.date ();
auto time = now.time_of_day ();
ss << setfill ('0') << "["
<< setw (2) << static_cast<int> (date.month ()) << "/" << setw (2) << date.day ()
<< "] " << setw (2)
<< time.hours () << ":" << setw (2) << time.minutes ();
return ss.str();
}
Log::Log (const string &functName)
: functName (functName) {
++indent;
if (debug)
cerr << *this << "> ";
}
Log::~Log () {
if (debug)
cerr << *this << "<" << endl << flush;
--indent;
}
ostream &
kaz::operator << (ostream &out, const Log &log) {
return out << Log::getLocalTimeStr () << setw (3) << setw ((log.indent % 20)*2) << "" << log.functName;
}
// ================================================================================

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////////////////////////////////////////////////////////////////////////////
// Copyright KAZ 2021 //
// //
// contact (at) kaz.bzh //
// //
// This software is a filter to shrink email by attachment extraction. //
// //
// This software is governed by the CeCILL-B license under French law and //
// abiding by the rules of distribution of free software. You can use, //
// modify and/or redistribute the software under the terms of the //
// CeCILL-B license as circulated by CEA, CNRS and INRIA at the following //
// URL "http://www.cecill.info". //
// //
// As a counterpart to the access to the source code and rights to copy, //
// modify and redistribute granted by the license, users are provided //
// only with a limited warranty and the software's author, the holder of //
// the economic rights, and the successive licensors have only limited //
// liability. //
// //
// In this respect, the user's attention is drawn to the risks associated //
// with loading, using, modifying and/or developing or reproducing the //
// software by the user in light of its specific status of free software, //
// that may mean that it is complicated to manipulate, and that also //
// therefore means that it is reserved for developers and experienced //
// professionals having in-depth computer knowledge. Users are therefore //
// encouraged to load and test the software's suitability as regards //
// their requirements in conditions enabling the security of their //
// systems and/or data to be ensured and, more generally, to use and //
// operate it in the same conditions as regards security. //
// //
// The fact that you are presently reading this means that you have had //
// knowledge of the CeCILL-B license and that you accept its terms. //
////////////////////////////////////////////////////////////////////////////
#include <iostream>
#include <sys/ioctl.h>
#include <algorithm>
#include <chrono>
#include <sstream>
#include <iomanip>
#include "kazDebug.hpp"
#include "kazMisc.hpp"
using namespace std;
using namespace kaz;
//template void kaz::quotedDecoded<'='> (string &content);
//template void kaz::quotedDecoded<'%'> (string &content);
static const string::size_type MAX_QUOTED_PRINTABLE_SIZE (78);
const char *const kaz::base64Chars =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"
"0123456789"
"+/";
const string kaz::availableURLChars =
"!#$%&'()*+,-./"
"0123456789"
":;=?"
"@ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"[]_"
"abcdefghijklmnopqrstuvwxyz"
"~";
// ================================================================================
uint16_t
kaz::getCols () {
struct winsize w;
ioctl (0, TIOCGWINSZ, &w);
return w.ws_col;
}
// ================================================================================
string
kaz::ns2string (const double &delta) {
using namespace std::chrono;
ostringstream oss;
duration<double> ns (delta);
oss.fill ('0');
// typedef duration<int, ratio<86400> > days;
// auto d = duration_cast<days>(ns);
// ns -= d;
auto h = duration_cast<hours> (ns);
ns -= h;
auto m = duration_cast<minutes> (ns);
ns -= m;
oss << setw (2) << h.count () << ":"
<< setw (2) << m.count () << ":"
<< setw (9) << fixed << setprecision (6) << ns.count ();
return oss.str ();
}
// ================================================================================
void
kaz::replaceAll (string& str, const string &from, const string &to) {
DEF_LOG ("kaz::replaceAll", "form: " << from << " to: " << to);
if (str.empty () || from.empty ())
return;
for (string::size_type startPos (0);
(startPos = str.find (from, startPos)) != string::npos;
startPos += to.length ())
str.replace (startPos, from.size (), to);
}
void
kaz::replaceAll (string& str, const map<const string, const string> &subst) {
DEF_LOG ("kaz::replaceAll", "str: " << str);
for (map<const string, const string>::const_iterator it = subst.begin (); it != subst.end (); ++it)
replaceAll (str, it->first, it->second);
}
// ================================================================================
void
kaz::toLower (string &content) {
DEF_LOG ("kaz::toLower", "content: " << content);
static locale loc;
for (string::size_type i = 0; i < content.length (); ++i)
content [i] = tolower (content[i], loc);
LOG ("content: " << content);
}
const string &
kaz::toUpperIfNeed (const string &src, string &tmp) {
DEF_LOG ("kaz::toUpperIfNeed", "src: " << src);
for (string::const_iterator it = src.begin (); it != src.end (); ++it)
if (*it != toupper (*it)) {
tmp.reserve ();
for (it = src.begin (); it != src.end (); ++it)
tmp.push_back (toupper (*it));
return tmp;
}
return src;
}
inline bool
caseInsensitiveCharCompare (char a, char b) {
return (toupper (a) == b);
}
string::size_type
kaz::caseInsensitiveFind (const string& s, const string& pattern, const string::size_type &pos) {
DEF_LOG ("kaz::caseInsensitiveFind", "pattern: " << pattern << " pos: " << pos << " s: " << s);
string tmp;
const string &upperPattern (toUpperIfNeed (pattern, tmp));
LOG ("pattern: " << upperPattern);
string::const_iterator it (search (s.begin ()+pos, s.end (), upperPattern.begin (), upperPattern.end (), caseInsensitiveCharCompare));
if (it == s.end ())
return string::npos;
LOG ("find: " << (it - s.begin ()));
return it - s.begin ();
}
string::size_type
kaz::caseInsensitiveRFind (const string& s, const string& pattern, const string::size_type &pos) {
DEF_LOG ("kaz::caseInsensitiveRFind", "pattern: " << pattern << " pos: " << pos << " s: " << s);
string tmp;
const string &upperPattern (toUpperIfNeed (pattern, tmp));
LOG ("pattern: " << upperPattern);
string::const_reverse_iterator it (search (s.rbegin (), s.rend ()+pos, upperPattern.rbegin (), upperPattern.rend (), caseInsensitiveCharCompare));
if (it == s.rend ())
return string::npos;
LOG ("find: " << (s.rend () - it - pattern.length ()));
return s.rend () - it - pattern.length ();
}
// ================================================================================
template<char delim>
void
kaz::quotedDecode (string &content) {
DEF_LOG ("kaz::quotedDecode", "delim: " << delim << " content: " << content);
string::size_type len (content.length ());
if (!len)
return;
LOG ("len: " << len);
string::iterator p (content.begin ()), q (p);
for ( ;
p < content.end ();
++p, ++q) {
if (*p != delim) {
*q = *p;
continue;
}
if (p+1 < content.end () && *(p+1) == '\n') {
LOG_BUG (q == content.begin (), ++p;continue, "kazMisc::quotedDecode bug: bad quoted-printable format. (start with '=', content: " << content << ")");
++p;
--q;
continue;
}
LOG_BUG (p+3 > content.end () || !isxdigit (p[1]) || !isxdigit (p[2]), return, "kazMisc::quotedDecode bug: bad quoted-printable format. (content: " << content << ")");
*q = (char) ((getHexaVal (p[1]) << 4) + getHexaVal (p[2]));
p += 2;
}
content.resize (q-content.begin ());
LOG ("content: " << content);
}
// ================================================================================
void
kaz::quotedEncode (string &content) {
DEF_LOG ("kaz::quotedDecode", "content: " << content);
string::size_type nbQuoted (0);
for (string::const_iterator it = content.begin (); it != content.end (); ++it)
if (isQuotedPrintable (*it))
++nbQuoted;
if (!nbQuoted)
return;
string::size_type estimate (content.length ()+nbQuoted*3);
estimate += (estimate/MAX_QUOTED_PRINTABLE_SIZE)*2;
string result;
result.reserve (estimate);
string::size_type cols (0);
char upper, lower;
for (string::const_iterator it = content.begin (); it != content.end (); ++it) {
const char &c (*it);
if (c == '\n') {
result.push_back ('\n');
cols = 0;
continue;
}
if (cols >= MAX_QUOTED_PRINTABLE_SIZE) {
result.push_back ('=');
result.push_back ('\n');
cols = 0;
}
if (!isQuotedPrintable (c) ||
((c == ' ' || c =='\t') && (it+1 == content.end () || *(it+1) == '\n'))) {
if (cols > MAX_QUOTED_PRINTABLE_SIZE-3) {
result.push_back ('=');
result.push_back ('\n');
cols = 0;
}
getHexa (c, upper, lower);
result.push_back ('=');
result.push_back (upper);
result.push_back (lower);
cols += 3;
continue;
}
result.push_back (c);
++cols;
}
content.swap (result);
LOG ("content: " << content);
}
// ================================================================================
void
kaz::base64Decode (string &content) {
DEF_LOG ("kaz::base64Decode", "content: " << content);
string::size_type len (content.length ());
if (!len)
return;
LOG ("len: " << len);
unsigned char buff[4];
int idx = 0;
string::iterator p (content.begin ()), q (p);
for (;
p < content.end ();
++p) {
char c = *p;
if (c == '=')
break;
if (c == '\n')
continue;
LOG_BUG (!isBase64 (c), return, "kazMisc::base64Decode bug: bad base64 format. (content: " << content << ")");
buff [idx] = getBase64Val (c);
if (++idx != 4)
continue;
*q = buff [0] << 2 | (buff [1] & 0x30) >> 4;
*++q = buff [1] << 4 | (buff [2] & 0x3c) >> 2;
*++q = buff [2] << 6 | buff [3];
++q;
idx = 0;
}
if (idx) {
for (int j = idx; j < 4; ++j)
buff [j] = 0;
*q = buff [0] << 2 | (buff [1] & 0x30) >> 4;
++q;
--idx;
if (idx) {
*q = buff [1] << 4 | (buff [2] & 0x3c) >> 2;
++q;
}
}
content.resize (q-content.begin ());
LOG ("content: " << content);
}
// ================================================================================
void
kaz::base64Encode (string &content) {
DEF_LOG ("kaz::base64Encode", "content: " << content);
string::size_type length (content.length ());
std::string result;
result.reserve ((length + 2) / 3 * 4 + length / MAX_QUOTED_PRINTABLE_SIZE + 1);
for (string::size_type pos (0), cols (0); pos < length; ) {
result.push_back (base64Chars [(content [pos + 0] & 0xfc) >> 2]);
if (pos == length-1) {
result.push_back (base64Chars [(content [pos + 0] & 0x03) << 4]);
result.push_back ('=');
result.push_back ('=');
break;
}
result.push_back (base64Chars [((content [pos + 0] & 0x03) << 4) +
((content [pos + 1] & 0xF0) >> 4)]);
if (pos == length-2) {
result.push_back (base64Chars [(content [pos + 1] & 0x0F) << 2]);
result.push_back ('=');
break;
}
result.push_back (base64Chars [((content [pos + 1] & 0x0F) << 2) +
((content [pos + 2] & 0xC0) >> 6)]);
result.push_back (base64Chars [content [pos + 2] & 0x3F]);
pos += 3;
cols += 4;
if (cols >= MAX_QUOTED_PRINTABLE_SIZE) {
result.push_back ('\n');
cols = 0;
}
}
content = result;
LOG ("content: " << content);
}
// ================================================================================
void
kaz::iso2utf (string &content) {
DEF_LOG ("kaz::iso2utf", "content: " << content);
string::size_type len (content.length ());
if (!len)
return;
LOG ("len: " << len);
string::size_type charCount (0);
for (string::iterator it = content.begin (); it != content.end (); ++it)
if ((uint8_t) *it >= 0x80)
++charCount;
if (!charCount)
return;
LOG ("charCount: " << charCount);
content.resize (len+charCount);
string::iterator p (content.end ()-1), q (p+charCount);
for ( ; ; --p, --q) {
uint8_t ch = *p;
if (ch < 0x80)
*q = ch;
else {
*q = 0x80 | (ch & 0x3F);
*--q = 0xc0 | ch >> 6;
LOG ("ch: " << (char) ch);
}
if (p == q)
break;
}
LOG ("content: " << content);
}
// ================================================================================
void
kaz::encodedWord (string &content) {
// rfc2047
DEF_LOG ("kaz::extendedWord", "content: " << content);
string::size_type charsetPos = content.find ("=?");
if (charsetPos == string::npos)
return;
LOG ("charsetPos: " << charsetPos);
LOG_BUG (charsetPos != 0, return, "kazMisc::extendedWord bug: =? not at begin pos. (content: " << content << ")");
string result;
for ( ;
(charsetPos = content.find ("=?", charsetPos)) != string::npos;
) {
string::size_type modePos = content.find ("?", charsetPos+2);
LOG_BUG (modePos == string::npos, return, "kazMisc::extendedWord bug: no end chartset. (content: " << content << ")");
string::size_type contentPos = content.find ("?", modePos+1);
LOG_BUG (contentPos != modePos+2, return, "kazMisc::extendedWord bug: no end chartset. (content: " << content << ")");
string::size_type endPos = content.find ("?=", contentPos+1);
LOG_BUG (endPos == string::npos, return, "kazMisc::extendedWord bug: no end chartset. (content: " << content << ")");
string tmp (content.substr (contentPos+1, endPos-contentPos-1));
switch (content [modePos+1]) {
case 'B':
case 'b':
base64Decode (tmp);
break;
case 'Q':
case 'q':
quotedDecode (tmp);
break;
default:
LOG_BUG (true, return, "kazMisc::extendedWord bug: unknown mode. (mode: " << content [modePos+1] << ")");
}
LOG ("tmp: " << tmp);
string charset (content.substr (charsetPos, modePos-charsetPos-2));
toLower (charset);
if (! caseInsensitiveFind (charset, "ISO"))
iso2utf (tmp);
result += tmp;
charsetPos = endPos+2;
}
content = result;
LOG ("content: " << content);
}
// ================================================================================
void
kaz::charsetValue (string &content) {
// rfc2184
DEF_LOG ("kaz::charsetValue", "content: " << content);
string::size_type langPos = content.find ("'");
LOG_BUG (langPos == string::npos, return, "kazMisc::charsetValue bug: no '. (content: " << content << ")");
string::size_type contentPos = content.find ("'", langPos+1);
LOG_BUG (contentPos == string::npos, return, "kazMisc::charsetValue bug: no double '. (content: " << content << ")");
string tmp (content.substr (contentPos+1));
quotedDecode<'%'> (tmp);
LOG ("tmp: " << tmp);
string charset (content.substr (0, langPos));
toLower (charset);
if (! caseInsensitiveFind (charset, "ISO"))
iso2utf (tmp);
content = tmp;
LOG ("content: " << content);
}
// ================================================================================

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////////////////////////////////////////////////////////////////////////////
// Copyright KAZ 2021 //
// //
// contact (at) kaz.bzh //
// //
// This software is a filter to shrink email by attachment extraction. //
// //
// This software is governed by the CeCILL-B license under French law and //
// abiding by the rules of distribution of free software. You can use, //
// modify and/or redistribute the software under the terms of the //
// CeCILL-B license as circulated by CEA, CNRS and INRIA at the following //
// URL "http://www.cecill.info". //
// //
// As a counterpart to the access to the source code and rights to copy, //
// modify and redistribute granted by the license, users are provided //
// only with a limited warranty and the software's author, the holder of //
// the economic rights, and the successive licensors have only limited //
// liability. //
// //
// In this respect, the user's attention is drawn to the risks associated //
// with loading, using, modifying and/or developing or reproducing the //
// software by the user in light of its specific status of free software, //
// that may mean that it is complicated to manipulate, and that also //
// therefore means that it is reserved for developers and experienced //
// professionals having in-depth computer knowledge. Users are therefore //
// encouraged to load and test the software's suitability as regards //
// their requirements in conditions enabling the security of their //
// systems and/or data to be ensured and, more generally, to use and //
// operate it in the same conditions as regards security. //
// //
// The fact that you are presently reading this means that you have had //
// knowledge of the CeCILL-B license and that you accept its terms. //
////////////////////////////////////////////////////////////////////////////
#ifndef _kaz_Attachment_hpp
#define _kaz_Attachment_hpp
#include <string>
#include <regex>
#include <map>
#include <utility>
#include "EmbeddedData.hpp"
namespace kaz {
using namespace std;
// ================================================================================
/*! e-mail structure */
class Attachment {
public:
/*! tokens indicat candidats to be updated by remove attachment */
//static const vector<const string> stringsToUpdate;
static vector<string> stringsToUpdate;
/*! mime tokens */
static const string contentTypeToken, contentDispositionToken, contentTransferEncodingToken, base64Token, quotedPrintableToken, contentIDToken, PLAIN, HTML, RELATED, ALTERNATIVE;
/*! pattern to extract mime values */
static const regex nameRegEx, nameCharsetRegEx, boundaryRegEx, cidDefRegEx, textRegEx, multiRegEx;
/*! get uniq filename */
static string getUnknown (const string &ext = "");
/*! remove all sections in content given by boundary tags */
static void removeSection (string &content, const string &beginTag, const string &endTag);
/*! catenates all sections in content given by boundary tags (use temporary vector) */
static string getSection (const string &content, const string &beginTag, const string &endTag);
/*! get all sections in content given by boundary marks and put them in result */
static void getSection (const string &content, const string &beginTag, const string &endTag, vector<string> &result);
/*! return the content-type */
const string getContentType () const;
/*! return the filename in mime (or uniq name if missing) */
const string getAttachName () const;
/*! return reference to the saved boundary. Empty value if attachment is not a multipart */
const string &getBoundary () const;
/*! return the size of the content */
const streamoff getSize () const;
/*! get a part of a mime header value */
const string getProp (const string &token, const regex &regEx) const;
/*! return if base64 encoded */
const bool isBase64Encoding () const;
/*! return if quoted-printable encoded */
const bool isQuotedPrintableEnconding () const;
/*! return if text (plain or html) and base64 encoded */
const bool isTextBase64 () const;
/*! return check if value exists in mime header */
const bool isDefProp (const string &token, const string &val) const;
protected:
/*! HTML image tag*/
static const string IMG_BEGIN, IMG_END;
/*! Attachment level (0 is main) */
const int level;
/*! char position in the mbox of the boundary before this attachment */
const streamoff beginInParent;
/*! char position of attachment including mime */
const streamoff beginPos;
/*! char position of attachment content */
streamoff contentPos, endPos;
/*! properties of the attachment */
bool toExtract, toUpdate, toDisclaim;
/*! id of an image embedded in mbox */
string cid;
/*! url to replace the attachment and its short id */
string downloadUrl, downloadId;
/*! properties of embedded image (self encoded with base64)*/
vector<EmbeddedData> embeddedData;
/*! mime values of the attachment */
map<string, string> env;
/*! boundary if the attachment is a multipart including previous and next "--" */
string boundary;
/*! size of boundary before the last "--" */
streamoff boundaryMiddleSize;
/*! sub attachment if the attachment is a multipart */
vector<Attachment> subAttachements;
/*! called during the parse process */
Attachment (ifstream &mbox, const int &level, const streamoff beginInParent, streamoff &curPos);
/*! called one time by the constructor */
void readMime (ifstream &mbox, streamoff &curPos);
/*! called one time by the constructor */
void readBoundaries (ifstream &mbox, streamoff &curPos);
/*! called for each part during the parse process add add a subAttachement. Return false when found last boundary */
bool nextBondary (ifstream &mbox, streamoff &curPos);
/*! recursively marks alternative attachments to be disclaim */
void markDisclaim (bool &plainMarked, bool &htmlMarked);
/*! recursively marks big attachments to be removed and upated (including disclaim). return true when part need to be updated (can't be extracted). */
bool markSignificant (const string &parentMultiProp, const streamoff &minAttachSize, ifstream &mbox, vector<Attachment *> &allMarkedPtrs);
/*! get a copy of the content. Base64 is decoded. Quoted-Printable is unwarp and unquoted */
string getContent (ifstream &mbox) const;
/*! write the content, encoded if necessary (base64 and quoted-printable) */
void println (ofstream &outbox, string content) const;
/*! replace embedded image */
void replaceEmbedded (string &content) const;
public:
friend class MainAttachment;
friend ostream& operator << (ostream& os, const Attachment& attachment);
};
/*! for debug pupose */
ostream& operator << (ostream& os, const Attachment& attachment);
// ================================================================================
}
#endif // _kaz_Attachment_hpp

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////////////////////////////////////////////////////////////////////////////
// Copyright KAZ 2021 //
// //
// contact (at) kaz.bzh //
// //
// This software is a filter to shrink email by attachment extraction. //
// //
// This software is governed by the CeCILL-B license under French law and //
// abiding by the rules of distribution of free software. You can use, //
// modify and/or redistribute the software under the terms of the //
// CeCILL-B license as circulated by CEA, CNRS and INRIA at the following //
// URL "http://www.cecill.info". //
// //
// As a counterpart to the access to the source code and rights to copy, //
// modify and redistribute granted by the license, users are provided //
// only with a limited warranty and the software's author, the holder of //
// the economic rights, and the successive licensors have only limited //
// liability. //
// //
// In this respect, the user's attention is drawn to the risks associated //
// with loading, using, modifying and/or developing or reproducing the //
// software by the user in light of its specific status of free software, //
// that may mean that it is complicated to manipulate, and that also //
// therefore means that it is reserved for developers and experienced //
// professionals having in-depth computer knowledge. Users are therefore //
// encouraged to load and test the software's suitability as regards //
// their requirements in conditions enabling the security of their //
// systems and/or data to be ensured and, more generally, to use and //
// operate it in the same conditions as regards security. //
// //
// The fact that you are presently reading this means that you have had //
// knowledge of the CeCILL-B license and that you accept its terms. //
////////////////////////////////////////////////////////////////////////////
#ifndef _kaz_EmbeddedData_hpp
#define _kaz_EmbeddedData_hpp
#include <string>
#include <vector>
namespace kaz {
using namespace std;
// ================================================================================
/*! properties of embedded image in html part (rfc2397) */
class EmbeddedData {
public:
/*! rank of this image tag */
int imgIdx;
/*! extracted in first pass */
string contentType, name;
string downloadUrl, downloadId;
/*! area of base64 relative in the image section */
string::size_type startData, dataLength;
/*! initialisation in the first pass */
EmbeddedData (const int &imgIdx, const string &contentType, const string &name, const string::size_type &startData, const string::size_type &dataLength);
/*! records properties */
static void fillEmbeddedData (const vector<string> &imgs, const streamoff &minAttachSize, vector<EmbeddedData> &data);
// friend ostream& operator << (ostream& os, const EmbeddedData& embeddedData);
};
ostream& operator << (ostream& os, const EmbeddedData& embeddedData);
// ================================================================================
}
#endif // _kaz_EmbeddedData_hpp

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////////////////////////////////////////////////////////////////////////////
// Copyright KAZ 2021 //
// //
// contact (at) kaz.bzh //
// //
// This software is a filter to shrink email by attachment extraction. //
// //
// This software is governed by the CeCILL-B license under French law and //
// abiding by the rules of distribution of free software. You can use, //
// modify and/or redistribute the software under the terms of the //
// CeCILL-B license as circulated by CEA, CNRS and INRIA at the following //
// URL "http://www.cecill.info". //
// //
// As a counterpart to the access to the source code and rights to copy, //
// modify and redistribute granted by the license, users are provided //
// only with a limited warranty and the software's author, the holder of //
// the economic rights, and the successive licensors have only limited //
// liability. //
// //
// In this respect, the user's attention is drawn to the risks associated //
// with loading, using, modifying and/or developing or reproducing the //
// software by the user in light of its specific status of free software, //
// that may mean that it is complicated to manipulate, and that also //
// therefore means that it is reserved for developers and experienced //
// professionals having in-depth computer knowledge. Users are therefore //
// encouraged to load and test the software's suitability as regards //
// their requirements in conditions enabling the security of their //
// systems and/or data to be ensured and, more generally, to use and //
// operate it in the same conditions as regards security. //
// //
// The fact that you are presently reading this means that you have had //
// knowledge of the CeCILL-B license and that you accept its terms. //
////////////////////////////////////////////////////////////////////////////
#ifndef _kaz_MainAttachment_hpp
#define _kaz_MainAttachment_hpp
#include <boost/filesystem.hpp>
#include "Attachment.hpp"
namespace kaz {
using namespace std;
namespace bfs = boost::filesystem;
// ================================================================================
/*! root level of e-mail structure */
class MainAttachment : public Attachment {
public:
/*! text to add in disclaim */
static const string templatePlainAddLink, templatePlainAllLink, templateHtmlHeader, templateHtmlAddLink, templateHtmlOtherLink, templateHtmlAllLink, templateHtmlFooter;
/*! white space to split a text */
static const regex whiteSpaceRegEx;
/*! copy a slice of mbox to stdout */
static void copy (ifstream &mbox, ofstream &outbox, const streamoff &begin, const streamoff &end);
/*! get url and id (space separated) from stdin */
void fillUrlId (string &url, string &id);
/*! location of extracted files */
void setExtractDir (const bfs::path &extractDir);
/*! URL base for archive download of all extracted files */
void setArchiveDownloadURL (const string &archiveDownloadURL);
/*! add a single link in disclaim */
void addLink (string &plain, string &html, const string &url, const string &name) const;
/*! get disclaim according alls links (retreived or create) */
void getDisclaim (string &plain, string &html) const;
private:
/*! for boot strap the attachment constructor */
streamoff &initTmpPos () { return tmpPos = 0; }
/*! for boot strap the attachment constructor */
int &initTmpLevel () { return tmpLevel = 0; }
/*! volatile values*/
streamoff tmpPos;
int tmpLevel;
/*! dir path for extraction */
bfs::path extractDir;
/*! URL base for download archives */
string archiveDownloadURL;
/*! subset in the tree of all attachments to be consider for extraction or modification */
vector<Attachment *> allMarkedPtrs;
/*! previous links find in mbox */
map<string, string> previousLinks;
/*! add link only if no significant value already exist. */
void addPrevious (const string &href, const string &name);
/*! extract previous links from plain text. Used by extractPreviousKAZ */
void extractLinks (const string &extractedPlainKAZ);
/*! extract previous links from html-li list. Used by extractPreviousKAZ */
void extractLinks (const vector<string> &liOne);
/*! extract previous links in mbox. Used by getUpdatedURL and substitute */
void extractPreviousKAZ (ifstream &mbox);
/*! remove previous links to archive. Used by substitute */
void removePreviousArchive ();
public:
/*! the main attachment in mbox */
MainAttachment (ifstream &mbox);
/*! mark disclaim, update and extract attachments. Must be call before: getUpdatedURL, extract or substitute */
void markSignificant (const streamoff &minAttachSize, ifstream &mbox);
/*! write to stdout le list of previous links in mbox */
void getUpdatedURL (ifstream &mbox);
/*! create record for extraction */
void newPjEntry (const int &attachCount, const string &contentType, const string &name, string &dirName, string &mediaName) const;
/*! extract big attachments in mbox to extractDir and write to stdout le dirname of each extraction */
void extract (ifstream &mbox, const SizeArg &minSize) const;
/*! substitute big attachments by the url give in stdin */
void substitute (ifstream &mbox, ofstream &outbox, const SizeArg &minSize);
};
// ================================================================================
}
#endif // _kaz_MainAttachment_hpp

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////////////////////////////////////////////////////////////////////////////
// Copyright KAZ 2021 //
// //
// contact (at) kaz.bzh //
// //
// This software is a filter to shrink email by attachment extraction. //
// //
// This software is governed by the CeCILL-B license under French law and //
// abiding by the rules of distribution of free software. You can use, //
// modify and/or redistribute the software under the terms of the //
// CeCILL-B license as circulated by CEA, CNRS and INRIA at the following //
// URL "http://www.cecill.info". //
// //
// As a counterpart to the access to the source code and rights to copy, //
// modify and redistribute granted by the license, users are provided //
// only with a limited warranty and the software's author, the holder of //
// the economic rights, and the successive licensors have only limited //
// liability. //
// //
// In this respect, the user's attention is drawn to the risks associated //
// with loading, using, modifying and/or developing or reproducing the //
// software by the user in light of its specific status of free software, //
// that may mean that it is complicated to manipulate, and that also //
// therefore means that it is reserved for developers and experienced //
// professionals having in-depth computer knowledge. Users are therefore //
// encouraged to load and test the software's suitability as regards //
// their requirements in conditions enabling the security of their //
// systems and/or data to be ensured and, more generally, to use and //
// operate it in the same conditions as regards security. //
// //
// The fact that you are presently reading this means that you have had //
// knowledge of the CeCILL-B license and that you accept its terms. //
////////////////////////////////////////////////////////////////////////////
#ifndef _kaz_SizeArg_hpp
#define _kaz_SizeArg_hpp
#include <iostream>
#include <string>
#include <boost/lexical_cast.hpp>
namespace kaz {
using namespace std;
// ================================================================================
/*! human readable of size values */
class SizeArg {
private:
/*! the size */
size_t bytes;
/*! human readable convertion */
void init (const string &option);
public:
/*! scalar convertion */
operator size_t () const { return bytes; }
/*! initialization from scalar value */
SizeArg (const size_t &bytes = 0);
/*! initialization from human readable value */
SizeArg (const string &option);
friend ostream &operator << (ostream &out, const SizeArg &sizeArg);
friend istream &operator >> (istream &in, SizeArg &sizeArg);
};
// ================================================================================
/*! human readable convertion */
ostream &operator << (ostream &out, const SizeArg &sizeArg);
istream &operator >> (istream &in, SizeArg &sizeArg);
}
#endif // _kaz_Attachment_hpp

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////////////////////////////////////////////////////////////////////////////
// Copyright KAZ 2021 //
// //
// contact (at) kaz.bzh //
// //
// This software is a filter to shrink email by attachment extraction. //
// //
// This software is governed by the CeCILL-B license under French law and //
// abiding by the rules of distribution of free software. You can use, //
// modify and/or redistribute the software under the terms of the //
// CeCILL-B license as circulated by CEA, CNRS and INRIA at the following //
// URL "http://www.cecill.info". //
// //
// As a counterpart to the access to the source code and rights to copy, //
// modify and redistribute granted by the license, users are provided //
// only with a limited warranty and the software's author, the holder of //
// the economic rights, and the successive licensors have only limited //
// liability. //
// //
// In this respect, the user's attention is drawn to the risks associated //
// with loading, using, modifying and/or developing or reproducing the //
// software by the user in light of its specific status of free software, //
// that may mean that it is complicated to manipulate, and that also //
// therefore means that it is reserved for developers and experienced //
// professionals having in-depth computer knowledge. Users are therefore //
// encouraged to load and test the software's suitability as regards //
// their requirements in conditions enabling the security of their //
// systems and/or data to be ensured and, more generally, to use and //
// operate it in the same conditions as regards security. //
// //
// The fact that you are presently reading this means that you have had //
// knowledge of the CeCILL-B license and that you accept its terms. //
////////////////////////////////////////////////////////////////////////////
#ifndef _Kaz_Debug_hpp
#define _Kaz_Debug_hpp
#include <iostream>
#include <string>
/*! log error */
#define LOG_BUG(cond, action, expr) {if (cond) {std::cerr << endl << expr << std::endl << std::flush; action; }}
#ifdef ENABLE_SMART_LOG
#ifndef SMART_DEF_LOG
#define SMART_DEF_LOG(name, expr) DEF_LOG (name, expr)
#endif
#ifndef SMART_LOG
#define SMART_LOG(expr) LOG (expr)
#endif
#ifndef SMART_LOG_EXPR
#define SMART_LOG_EXPR(expr) {if (::kaz::Log::debug) {expr;} }
#endif
#else
#ifndef SMART_DEF_LOG
#define SMART_DEF_LOG(name, expr)
#endif
#ifndef SMART_LOG
#define SMART_LOG(expr)
#endif
#ifndef SMART_LOG_EXPR
#define SMART_LOG_EXPR(expr)
#endif
#endif
#ifdef DISABLE_LOG
#ifndef DEF_LOG
#define DEF_LOG(name, expr)
#endif
#ifndef LOG
#define LOG(expr) {}
#endif
#ifndef DEBUG
#define DEBUG(expr) {}
#endif
#else
#ifndef DEF_LOG
/*! to placed as the first instruction to log entry and return method */
#define DEF_LOG(name, expr) ::kaz::Log log (name); { if (::kaz::Log::debug) std::cerr << expr << std::endl << std::flush; }
#endif
#ifndef LOG
/*! to placed in methode where DEF_LOG if call previously */
// _______________________________________________________ Don't forget DEF_LOG
#define LOG(expr) { if (::kaz::Log::debug) std::cerr << log << "| " << expr << std::endl << std::flush; }
#endif
#ifndef DEBUG
/*! log without format */
#define DEBUG(expr) { if (::kaz::Log::debug) std::cerr << expr << std::endl << std::flush; }
#endif
#endif
namespace kaz {
// ================================================================================
using namespace std;
/*! manage prety print log */
class Log {
/*! visual indentation of call */
static size_t indent;
/*! name recall in log */
string functName;
public:
/*! switch on the log */
static bool debug;
/*! log entry of a method */
Log (const string &functName);
/*! log return of a method */
~Log ();
/*! timestamp of the log */
static string getLocalTimeStr ();
friend ostream &operator << (ostream &out, const Log &log);
};
ostream &operator << (ostream &out, const Log &log);
// ================================================================================
} // kaz
#endif //_Kaz_Debug_hpp

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src/include/kazMisc.hpp Normal file
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////////////////////////////////////////////////////////////////////////////
// Copyright KAZ 2021 //
// //
// contact (at) kaz.bzh //
// //
// This software is a filter to shrink email by attachment extraction. //
// //
// This software is governed by the CeCILL-B license under French law and //
// abiding by the rules of distribution of free software. You can use, //
// modify and/or redistribute the software under the terms of the //
// CeCILL-B license as circulated by CEA, CNRS and INRIA at the following //
// URL "http://www.cecill.info". //
// //
// As a counterpart to the access to the source code and rights to copy, //
// modify and redistribute granted by the license, users are provided //
// only with a limited warranty and the software's author, the holder of //
// the economic rights, and the successive licensors have only limited //
// liability. //
// //
// In this respect, the user's attention is drawn to the risks associated //
// with loading, using, modifying and/or developing or reproducing the //
// software by the user in light of its specific status of free software, //
// that may mean that it is complicated to manipulate, and that also //
// therefore means that it is reserved for developers and experienced //
// professionals having in-depth computer knowledge. Users are therefore //
// encouraged to load and test the software's suitability as regards //
// their requirements in conditions enabling the security of their //
// systems and/or data to be ensured and, more generally, to use and //
// operate it in the same conditions as regards security. //
// //
// The fact that you are presently reading this means that you have had //
// knowledge of the CeCILL-B license and that you accept its terms. //
////////////////////////////////////////////////////////////////////////////
#ifndef _kaz_misc_hpp
#define _kaz_misc_hpp
#include <string>
#include <ctype.h>
#include <map>
namespace kaz {
using namespace std;
// =======================================================================
/*! ordered base64 chars */
extern const char * const base64Chars;
/*! set of chars available in URL */
extern const string availableURLChars;
// =======================================================================
/*! get the width of the terminal */
uint16_t getCols ();
/*! display time. */
string ns2string (const double &delta);
// =======================================================================
/*! side effect on str to replace "from" by "to" */
void replaceAll (string& str, const string &from, const string &to);
/*! side effect on str to replace a set of "from" by a set of "to" */
void replaceAll (string& str, const map<const string, const string> &subst);
// =======================================================================
/*! side effect to lower case a string (in mime section) */
void toLower (string &content);
/*! compare strings are done in uppercase to avoid accents. Give token in uppercase spin up the process */
const string &toUpperIfNeed (const string &src, string &tmp);
/*! find upper case of p in upper case of s */
string::size_type caseInsensitiveFind (const string& s, const string& p, const string::size_type &pos = 0);
/*! reverse find upper case of p in upper case of s */
string::size_type caseInsensitiveRFind (const string& s, const string& p, const string::size_type &pos = 0);
/*! side effect to repplace =XX by the char with de haxe value XX. It could be %XX in rfc2184 */
template<char delim='='>
void quotedDecode (string &content);
/*! side effect to quoted-printable content rfc2045 */
void quotedEncode (string &content);
/*! side effect to decode base64 */
void base64Decode (string &content);
/*! side effect to encode base64 */
void base64Encode (string &content);
/*! side effect to change charset of content */
void iso2utf (string &content);
/*! side effect to get the encodedWord according rfc2047 */
void encodedWord (string &content);
/*! side effect to get the charsetValue according rfc2184 */
void charsetValue (string &content);
// =======================================================================
/*! return if the c need no quote */
inline bool
isQuotedPrintable (const char &c) {
return
c == ' ' || c == '\t' || (c >= 33 && c <= 126 && c != '=' && c != '.');
// '.' is available in rfc2184 but it avoid to check '.' alone in a line :-)
}
/*! return if the c is in available base64 chars */
inline bool
isBase64 (const char &c) {
return (isalnum (c) || (c == '+') || (c == '/'));
}
/*! get the order of c in the base64 set of values */
inline unsigned char
getBase64Val (const char &c) {
if (c == '+')
return 62;
if (c == '/')
return 63;
if (c <= '9')
return (c-'0')+52;
if (c <= 'Z')
return (c-'A');
return (c-'a')+26;
}
/*! get the nibble value of c representation of an hexa digit */
inline unsigned char
getHexaVal (const char &c) {
if (c <= '9')
return c-'0';
if (c <= 'F')
return (c-'A')+10;
return (c-'a')+10;
}
/*! get the nibble value of c representation of an hexa digit */
inline void
getHexa (const char &c, char &upper, char &lower) {
upper = c >> 4 & 0xF;
upper += upper > 9 ? ('A'-10) : '0';
lower = c & 0xF;
lower += lower > 9 ? ('A'-10) : '0';
}
// =======================================================================
}
#endif // _kaz_Attachment_hpp