tools/source/inet/inetmsg.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <sal/types.h>
  21 #include <tools/datetime.hxx>
  22 #include <tools/inetmsg.hxx>
  23 #include <comphelper/string.hxx>
  24 #include <rtl/character.hxx>
  25
  26 #include <map>
  27
  28 void INetMIMEMessage::SetHeaderField_Impl (
  29     const OString &rName,
  30     const OUString &rValue,
  31     sal_uInt32 &rnIndex)
  32 {
  33     SetHeaderField_Impl (
  34         INetMessageHeader (rName, rValue.toUtf8()), rnIndex);
  35 }
  36
  37 /* ParseDateField and local helper functions.
  38  *
  39  * Parses a String in (implied) GMT format into class Date and tools::Time objects.
  40  * Four formats are accepted:
  41  *
  42  *  [Wkd,] 1*2DIGIT Mon 2*4DIGIT 00:00:00 [GMT]  (rfc1123)
  43  *  [Wkd,] 00 Mon 0000 00:00:00 [GMT])           (rfc822, rfc1123)
  44  *   Weekday, 00-Mon-00 00:00:00 [GMT]           (rfc850, rfc1036)
  45  *   Wkd Mon 00 00:00:00 0000 [GMT]              (ctime)
  46  *   1*DIGIT                                     (delta seconds)
  47  */
  48
  49 static const sal_Char *months[12] =
  50 {
  51     "Jan", "Feb", "Mar", "Apr", "May", "Jun",
  52     "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
  53 };
  54
  55 static sal_uInt16 ParseNumber(const OString& rStr, sal_Int32& nIndex)
  56 {
  57     sal_Int32 n = nIndex;
  58     while ((n < rStr.getLength())
  59            && rtl::isAsciiDigit(static_cast<unsigned char>(rStr[n])))
  60         n++;
  61
  62     OString aNum(rStr.copy(nIndex, (n - nIndex)));
  63     nIndex = n;
  64
  65     return static_cast<sal_uInt16>(aNum.toInt32());
  66 }
  67
  68 static sal_uInt16 ParseMonth(const OString& rStr, sal_Int32& nIndex)
  69 {
  70     sal_Int32 n = nIndex;
  71     while ((n < rStr.getLength())
  72            && rtl::isAsciiAlpha(static_cast<unsigned char>(rStr[n])))
  73         n++;
  74
  75     OString aMonth(rStr.copy(nIndex, 3));
  76     nIndex = n;
  77
  78     sal_uInt16 i;
  79     for (i = 0; i < 12; i++)
  80         if (aMonth.equalsIgnoreAsciiCase(months[i])) break;
  81     return (i + 1);
  82 }
  83
  84 bool INetMIMEMessage::ParseDateField (
  85     const OUString& rDateFieldW, DateTime& rDateTime)
  86 {
  87     OString aDateField(OUStringToOString(rDateFieldW,
  88         RTL_TEXTENCODING_ASCII_US));
  89
  90     if (aDateField.isEmpty()) return false;
  91
  92     if (aDateField.indexOf(':') != -1)
  93     {
  94         // Some DateTime format.
  95         sal_Int32 nIndex = 0;
  96
  97         // Skip over <Wkd> or <Weekday>, leading and trailing space.
  98         while ((nIndex < aDateField.getLength()) &&
  99                (aDateField[nIndex] == ' '))
 100             nIndex++;
 101
 102         while (
 103             (nIndex < aDateField.getLength()) &&
 104             (rtl::isAsciiAlpha (static_cast<unsigned char>(aDateField[nIndex])) ||
 105              (aDateField[nIndex] == ',')     ))
 106             nIndex++;
 107
 108         while ((nIndex < aDateField.getLength()) &&
 109                (aDateField[nIndex] == ' '))
 110             nIndex++;
 111
 112         if (rtl::isAsciiAlpha (static_cast<unsigned char>(aDateField[nIndex])))
 113         {
 114             // Format: ctime().
 115             if ((aDateField.getLength() - nIndex) < 20) return false;
 116
 117             rDateTime.SetMonth  (ParseMonth  (aDateField, nIndex)); nIndex++;
 118             rDateTime.SetDay    (ParseNumber (aDateField, nIndex)); nIndex++;
 119
 120             rDateTime.SetHour   (ParseNumber (aDateField, nIndex)); nIndex++;
 121             rDateTime.SetMin    (ParseNumber (aDateField, nIndex)); nIndex++;
 122             rDateTime.SetSec    (ParseNumber (aDateField, nIndex)); nIndex++;
 123             rDateTime.SetNanoSec (0);
 124
 125             sal_uInt16 nYear = ParseNumber (aDateField, nIndex);
 126             if (nYear < 100) nYear += 1900;
 127             rDateTime.SetYear   (nYear);
 128         }
 129         else
 130         {
 131             // Format: RFC1036 or RFC1123.
 132             if ((aDateField.getLength() - nIndex) < 17) return false;
 133
 134             rDateTime.SetDay    (ParseNumber (aDateField, nIndex)); nIndex++;
 135             rDateTime.SetMonth  (ParseMonth  (aDateField, nIndex)); nIndex++;
 136
 137             sal_uInt16 nYear  = ParseNumber (aDateField, nIndex);  nIndex++;
 138             if (nYear < 100) nYear += 1900;
 139             rDateTime.SetYear   (nYear);
 140
 141             rDateTime.SetHour   (ParseNumber (aDateField, nIndex)); nIndex++;
 142             rDateTime.SetMin    (ParseNumber (aDateField, nIndex)); nIndex++;
 143             rDateTime.SetSec    (ParseNumber (aDateField, nIndex)); nIndex++;
 144             rDateTime.SetNanoSec (0);
 145
 146             const char cPossiblePlusMinus = nIndex < aDateField.getLength() ? aDateField[nIndex] : 0;
 147             if (cPossiblePlusMinus == '+' || cPossiblePlusMinus == '-')
 148             {
 149                 // Offset from GMT: "(+|-)HHMM".
 150                 bool bEast   = (aDateField[nIndex++] == '+');
 151                 sal_uInt16 nOffset = ParseNumber (aDateField, nIndex);
 152                 if (nOffset > 0)
 153                 {
 154                     tools::Time aDiff( tools::Time::EMPTY );
 155                     aDiff.SetHour   (nOffset / 100);
 156                     aDiff.SetMin    (nOffset % 100);
 157                     aDiff.SetSec    (0);
 158                     aDiff.SetNanoSec (0);
 159
 160                     if (bEast)
 161                         rDateTime -= aDiff;
 162                     else
 163                         rDateTime += aDiff;
 164                 }
 165             }
 166         }
 167     }
 168     else if (comphelper::string::isdigitAsciiString(aDateField))
 169     {
 170         // Format: delta seconds.
 171         tools::Time aDelta (0);
 172         aDelta.SetTime (aDateField.toInt32() * 100);
 173
 174         DateTime aNow( DateTime::SYSTEM );
 175         aNow += aDelta;
 176         aNow.ConvertToUTC();
 177
 178         rDateTime.SetDate (aNow.GetDate());
 179         rDateTime.SetTime (aNow.GetTime());
 180     }
 181     else
 182     {
 183         // Junk.
 184         return false;
 185     }
 186
 187     return (rDateTime.IsValidAndGregorian() &&
 188             !((rDateTime.GetSec()  > 59) ||
 189               (rDateTime.GetMin()  > 59) ||
 190               (rDateTime.GetHour() > 23)    ));
 191 }
 192
 193 static const std::map<InetMessageMime, const char*> ImplINetMIMEMessageHeaderData =
 194 {
 195     { InetMessageMime::VERSION, "MIME-Version"},
 196     { InetMessageMime::CONTENT_DISPOSITION, "Content-Disposition"},
 197     { InetMessageMime::CONTENT_TYPE, "Content-Type"},
 198     { InetMessageMime::CONTENT_TRANSFER_ENCODING, "Content-Transfer-Encoding"}
 199 };
 200
 201 INetMIMEMessage::INetMIMEMessage()
 202     : pParent(nullptr)
 203 {
 204     for (sal_uInt16 i = 0; i < static_cast<int>(InetMessageMime::NUMHDR); i++)
 205         m_nMIMEIndex[static_cast<InetMessageMime>(i)] = SAL_MAX_UINT32;
 206 }
 207
 208 INetMIMEMessage::~INetMIMEMessage()
 209 {
 210 }
 211
 212 void INetMIMEMessage::SetMIMEVersion (const OUString& rVersion)
 213 {
 214     SetHeaderField_Impl (
 215         ImplINetMIMEMessageHeaderData.at(InetMessageMime::VERSION), rVersion,
 216         m_nMIMEIndex[InetMessageMime::VERSION]);
 217 }
 218
 219 void INetMIMEMessage::SetContentDisposition (const OUString& rDisposition)
 220 {
 221     SetHeaderField_Impl (
 222         ImplINetMIMEMessageHeaderData.at(InetMessageMime::CONTENT_DISPOSITION), rDisposition,
 223         m_nMIMEIndex[InetMessageMime::CONTENT_DISPOSITION]);
 224 }
 225
 226 void INetMIMEMessage::SetContentType (const OUString& rType)
 227 {
 228     SetHeaderField_Impl (
 229         ImplINetMIMEMessageHeaderData.at(InetMessageMime::CONTENT_TYPE), rType,
 230         m_nMIMEIndex[InetMessageMime::CONTENT_TYPE]);
 231 }
 232
 233 void INetMIMEMessage::SetContentTransferEncoding (
 234     const OUString& rEncoding)
 235 {
 236     SetHeaderField_Impl (
 237         ImplINetMIMEMessageHeaderData.at(InetMessageMime::CONTENT_TRANSFER_ENCODING), rEncoding,
 238         m_nMIMEIndex[InetMessageMime::CONTENT_TRANSFER_ENCODING]);
 239 }
 240
 241 OUString INetMIMEMessage::GetDefaultContentType()
 242 {
 243     if (pParent != nullptr)
 244     {
 245         OUString aParentCT (pParent->GetContentType());
 246         if (aParentCT.isEmpty())
 247             aParentCT = pParent->GetDefaultContentType();
 248
 249         if (aParentCT.equalsIgnoreAsciiCase("multipart/digest"))
 250             return "message/rfc822";
 251     }
 252     return "text/plain; charset=us-ascii";
 253 }
 254
 255 void INetMIMEMessage::EnableAttachMultipartFormDataChild()
 256 {
 257     // Check context.
 258     if (IsContainer())
 259         return;
 260
 261     // Generate a unique boundary from current time.
 262     sal_Char sTail[16 + 1];
 263     tools::Time aCurTime( tools::Time::SYSTEM );
 264     sal_uInt64 nThis = reinterpret_cast< sal_uIntPtr >( this ); // we can be on a 64bit architecture
 265     nThis = ( ( nThis >> 32 ) ^ nThis ) & SAL_MAX_UINT32;
 266     sprintf (sTail, "%08X%08X",
 267              static_cast< unsigned int >(aCurTime.GetTime()),
 268              static_cast< unsigned int >(nThis));
 269     m_aBoundary = "------------_4D48";
 270     m_aBoundary += sTail;
 271
 272     // Set header fields.
 273     SetMIMEVersion("1.0");
 274     SetContentType(
 275         OUString::fromUtf8("multipart/form-data; boundary=" + m_aBoundary));
 276     SetContentTransferEncoding("7bit");
 277 }
 278
 279 void INetMIMEMessage::AttachChild(std::unique_ptr<INetMIMEMessage> pChildMsg)
 280 {
 281     assert(IsContainer());
 282     if (IsContainer())
 283     {
 284         pChildMsg->pParent = this;
 285         aChildren.push_back( std::move(pChildMsg) );
 286     }
 287 }
 288
 289 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */