diff options
Diffstat (limited to 'protocols/YAMN/mails/decode.cpp')
| -rw-r--r-- | protocols/YAMN/mails/decode.cpp | 558 |
1 files changed, 558 insertions, 0 deletions
diff --git a/protocols/YAMN/mails/decode.cpp b/protocols/YAMN/mails/decode.cpp new file mode 100644 index 0000000000..867ed7ff25 --- /dev/null +++ b/protocols/YAMN/mails/decode.cpp @@ -0,0 +1,558 @@ +/*
+ * This code implements decoding encoded MIME header in style
+ * =?iso-8859-2?Q? "User using email in central Europe characters such as =E9" ?=
+ *
+ * (c) majvan 2002-2004
+ */
+#include "../yamn.h"
+//--------------------------------------------------------------------------------------------------
+//--------------------------------------------------------------------------------------------------
+
+struct _tcptable CodePageNamesAll[]=
+{
+ { "ANSI", "",TRUE,CP_ACP},
+ { "WINDOWS-1", "250",0,1250},
+ { "WINDOWS-1", "251",0,1251},
+ { "WINDOWS-1", "252",0,1252},
+ { "WINDOWS-1", "253",0,1253},
+ { "WINDOWS-1", "254",0,1254},
+ { "WINDOWS-1", "255",0,1255},
+ { "WINDOWS-1", "256",0,1256},
+ { "WINDOWS-1", "257",0,1257},
+ { "WINDOWS-1", "258",0,1258},
+ { "CP1", "250",0,1250},
+ { "CP1", "251",0,1251},
+ { "CP1", "252",0,1252},
+ { "CP1", "253",0,1253},
+ { "CP1", "254",0,1254},
+ { "CP1", "255",0,1255},
+ { "CP1", "256",0,1256},
+ { "CP1", "257",0,1257},
+ { "CP1", "258",0,1258},
+ { "ANSI-1", "250",0,1250},
+ { "ANSI-1", "251",0,1251},
+ { "ANSI-1", "252",0,1252},
+ { "ANSI-1", "253",0,1253},
+ { "ANSI-1", "254",0,1254},
+ { "ANSI-1", "255",0,1255},
+ { "ANSI-1", "256",0,1256},
+ { "ANSI-1", "257",0,1257},
+ { "ANSI-1", "258",0,1258},
+ { "KOI8", "-R",0,20866},
+ { "KOI8", "",0,20866},
+ { "KOI8", "-U",0,21866},
+ { "KOI8", "-RU",0,21866},
+ { "US-", "ASCII",0,20127},
+ { "CP", "367",0,20127},
+ { "ASCII", "",0,20127},
+ { "ASCII", "7",0,20127},
+ { "ISO-8859", "-1",0,28591},
+ { "ISO-8859", "-2",0,28592},
+ { "ISO-8859", "-3",0,28593},
+ { "ISO-8859", "-4",0,28594},
+ { "ISO-8859", "-5",0,28595},
+ { "ISO-8859", "-6",0,28596},
+ { "ISO-8859", "-7",0,28597},
+ { "ISO-8859", "-8",0,28598},
+ { "ISO-8859", "-9",0,28599},
+ { "ISO-8859", "-15",0,28605},
+ { "ISO_8859", "-1",0,28591},
+ { "ISO_8859", "-2",0,28592},
+ { "ISO_8859", "-3",0,28593},
+ { "ISO_8859", "-4",0,28594},
+ { "ISO_8859", "-5",0,28595},
+ { "ISO_8859", "-6",0,28596},
+ { "ISO_8859", "-7",0,28597},
+ { "ISO_8859", "-8",0,28598},
+ { "ISO_8859", "-9",0,28599},
+ { "ISO_8859", "-15",0,28605},
+ { "ISO-", "10646-USC2",0,1200},
+ { "ISO-2022", "/2-JP",0,50220},
+ { "ISO-2022", "-JP",0,50221},
+ { "ISO-2022", "/JIS-JP",0,50222},
+ { "ISO-2022", "-KR",0,50225},
+ { "ISO-2022", "-CH(SP)",0,50227},
+ { "ISO-2022", "-CH(TR)",0,50229},
+ { "UTF-", "7",0,65000},
+ { "UTF-", "8",0,65001},
+ { "ARAB-", "TRANSPARENT",0,710},
+ { "ASMO-", "TRANSPARENT",0,720},
+ { "ASMO-", "449",0,709},
+ { "ASMO-", "708",0,708},
+ { "BIG5", "",0,950},
+ { "EUC-", "CH(SP)",0,51936},
+ { "EUC-", "CH(TR)",0,51950},
+ { "EUC-", "JP",0,51932},
+ { "EUC-", "KR",0,51949},
+ { "GB-", "2312",0,20936},
+ { "GB", "2312",0,20936},
+ { "HZGB-", "2312",0,52936},
+ { "IBM-", "037",0,37},
+ { "IBM-", "290",0,290},
+ { "IBM-", "437",0,437},
+ { "IBM-", "500",0,500},
+ { "IBM-", "775",0,775},
+ { "IBM-", "850",0,850},
+ { "IBM-", "852",0,852},
+ { "IBM-", "855",0,855},
+ { "IBM-", "857",0,857},
+ { "IBM-", "860",0,860},
+ { "IBM-", "861",0,861},
+ { "IBM-", "862",0,862},
+ { "IBM-", "863",0,863},
+ { "IBM-", "864",0,864},
+ { "IBM-", "865",0,865},
+ { "IBM-", "866",0,866},
+ { "IBM-", "869",0,869},
+ { "IBM-", "870",0,870},
+ { "IBM-", "875",0,875},
+ { "IBM-", "1026",0,1026},
+ { "IBM-", "273",0,20273},
+ { "IBM-", "277",0,20277},
+ { "IBM-", "278",0,20278},
+ { "IBM-", "280",0,20280},
+ { "IBM-", "284",0,20284},
+ { "IBM-", "285",0,20285},
+ { "IBM-", "290",0,20290},
+ { "IBM-", "297",0,20297},
+ { "IBM-", "420",0,20420},
+ { "IBM-", "423",0,20423},
+ { "IBM-", "871",0,20871},
+ { "IBM-", "880",0,20880},
+ { "IBM-", "905",0,20905},
+ { "IBM-", "THAI",0,20838},
+ { "ISCII-", "DEVANAGARI",0,57002},
+ { "ISCII-", "BENGALI",0,57003},
+ { "ISCII-", "TAMIL",0,57004},
+ { "ISCII-", "TELUGU",0,57005},
+ { "ISCII-", "ASSAMESE",0,57006},
+ { "ISCII-", "ORIYA",0,57007},
+ { "ISCII-", "KANNADA",0,57008},
+ { "ISCII-", "MALAYALAM",0,57009},
+ { "ISCII-", "GUJARATI",0,57010},
+ { "ISCII-", "PUNJABI",0,57011},
+ { "KOR-", "JOHAB",0,1361},
+ { "KSC-", "5601",0,1361},
+ { "MAC-", "ROMAN",0,10000},
+ { "MAC-", "JP",0,10001},
+ { "MAC-", "CH(SP)(BIG5)",0,10002},
+ { "MAC-", "KR",0,10003},
+ { "MAC-", "AR",0,10004},
+ { "MAC-", "HW",0,10005},
+ { "MAC-", "GR",0,10006},
+ { "MAC-", "CY",0,10007},
+ { "MAC-", "CH(SP)(GB2312)",0,10008},
+ { "MAC-", "ROMANIA",0,10010},
+ { "MAC-", "UA",0,10017},
+ { "MAC-", "TH",0,10021},
+ { "MAC-", "LAT2",0,10029},
+ { "MAC-", "ICE",0,10079},
+ { "MAC-", "TR",0,10081},
+ { "MAC-", "CR",0,10082}
+};
+
+int CPLENALL = (sizeof(CodePageNamesAll)/sizeof(CodePageNamesAll[0]));
+struct _tcptable *CodePageNamesSupp;
+int CPLENSUPP = 1;
+
+//Gets codepage ID from string representing charset such as "iso-8859-1"
+// input- the string
+// size- max length of input string
+int GetCharsetFromString(char *input,size_t size);
+
+//HexValue to DecValue ('a' to 10)
+// HexValue- hexa value ('a')
+// DecValue- poiner where to store dec value
+// returns 0 if not success
+int FromHexa(char HexValue,char *DecValue);
+
+//Decodes a char from Base64
+// Base64Value- input char in Base64
+// DecValue- pointer where to store the result
+// returns 0 if not success
+int FromBase64(char Base64Value,char *DecValue);
+
+//Decodes string in quoted printable
+// Src- input string
+// Dst- where to store output string
+// DstLen- how max long should be output string
+// isQ- if is "Q-encoding" modification. should be TRUE in headers
+// always returns 1
+int DecodeQuotedPrintable(char *Src,char *Dst,int DstLen, BOOL isQ);
+
+//Decodes string in base64
+// Src- input string
+// Dst- where to store output string
+// DstLen- how max long should be output string
+// returns 0 if string was not properly decoded
+int DecodeBase64(char *Src,char *Dst,int DstLen);
+
+//Converts string to unicode from string with specified codepage
+// stream- input string
+// cp- codepage of input string
+// out- pointer to new allocated memory that contains unicode string
+int ConvertStringToUnicode(char *stream,unsigned int cp,WCHAR **out);
+
+//Converts string from MIME header to unicode
+// stream- input string
+// cp- codepage of input string
+// storeto- pointer to memory that contains unicode string
+// mode- MIME_PLAIN or MIME_MAIL (MIME_MAIL deletes '"' from start and end of string)
+void ConvertCodedStringToUnicode(char *stream,WCHAR **storeto,DWORD cp,int mode);
+
+//--------------------------------------------------------------------------------------------------
+//--------------------------------------------------------------------------------------------------
+
+int GetCharsetFromString(char *input,size_t size)
+//"ISO-8859-1" to ID from table
+{
+ char *pin=input;
+ char *pout,*parser;
+
+ if ((size<1) || (parser=pout=new char[size+1])==NULL)
+ return -1;
+ while((*pin!=0) && (pin-input< (INT_PTR)size))
+ {
+ if ((*pin>='a') && (*pin<='z'))
+ *parser++=*(pin++)-('a'-'A'); // make it capital
+ //else if (*pin=='\"') // this is already done in ExtractFromContentType
+ // *pin++; //skip the quotes if any
+ else
+ *parser++=*pin++;
+ }
+
+ *parser=(char)0;
+
+#ifdef DEBUG_DECODECODEPAGE
+ DebugLog(DecodeFile,"<CodePage>%s</CodePage>",pout);
+#endif
+ for (int i=0;i<CPLENALL;i++) {
+ size_t len = strlen(CodePageNamesAll[i].NameBase);
+ if (0==strncmp(pout,CodePageNamesAll[i].NameBase,len)) {
+ if (0==strcmp(pout+len,CodePageNamesAll[i].NameSub)) {
+ delete[] pout;
+ return CodePageNamesAll[i].CP;
+ }
+ }
+ }
+ delete[] pout;
+ return -1; //not found
+}
+
+int FromHexa(char HexValue,char *DecValue)
+{
+ if (HexValue>='0' && HexValue<='9')
+ {
+ *DecValue=HexValue-'0';
+ return 1;
+ }
+ if (HexValue>='A' && HexValue<='F')
+ {
+ *DecValue=HexValue-'A'+10;
+ return 1;
+ }
+ if (HexValue>='a' && HexValue<='f')
+ {
+ *DecValue=HexValue-'a'+10;
+ return 1;
+ }
+ return 0;
+}
+
+int FromBase64(char Base64Value,char *DecValue)
+{
+ if (Base64Value>='A' && Base64Value<='Z')
+ {
+ *DecValue=Base64Value-'A';
+ return 1;
+ }
+ if (Base64Value>='a' && Base64Value<='z')
+ {
+ *DecValue=Base64Value-'a'+26;
+ return 1;
+ }
+ if (Base64Value>='0' && Base64Value<='9')
+ {
+ *DecValue=Base64Value-'0'+52;
+ return 1;
+ }
+ if (Base64Value=='+')
+ {
+ *DecValue=Base64Value-'+'+62;
+ return 1;
+ }
+ if (Base64Value=='/')
+ {
+ *DecValue=Base64Value-'/'+63;
+ return 1;
+ }
+ if (Base64Value=='=')
+ {
+ *DecValue=0;
+ return 1;
+ }
+ return 0;
+}
+
+int DecodeQuotedPrintable(char *Src,char *Dst,int DstLen, BOOL isQ)
+{
+#ifdef DEBUG_DECODEQUOTED
+ char *DstTemp=Dst;
+ DebugLog(DecodeFile,"<Decode Quoted><Input>%s</Input>",Src);
+#endif
+ for (int Counter=0;((char)*Src!=0) && DstLen && (Counter++<DstLen);Src++,Dst++)
+ if (*Src=='=')
+ {
+ if (!isQ){
+ if (Src[1]==0x0D){
+ Src++; Src++;
+ if (Src[0]==0x0A) Src++;
+ goto CopyCharQuotedPrintable;
+ }
+ if (Src[1]==0x0A){
+ Src++; Src++;
+ goto CopyCharQuotedPrintable;
+ }
+ }
+ char First,Second;
+ if (!FromHexa(*(++Src),&First))
+ {
+ *Dst++='=';Src--;
+ continue;
+ }
+ if (!FromHexa(*(++Src),&Second))
+ {
+ *Dst++='=';Src--;Src--;
+ continue;
+ }
+ *Dst=(char)(First)<<4;
+ *Dst+=Second;
+ }
+ else if (isQ && *Src=='_')
+ *Dst=' ';
+ else
+CopyCharQuotedPrintable: // Yeah. Bad programming stile.
+ *Dst=*Src;
+ *Dst=(char)0;
+#ifdef DEBUG_DECODEQUOTED
+ DebugLog(DecodeFile,"<Output>%s</Output></Decode Quoted>",DstTemp);
+#endif
+ return 1;
+}
+
+int DecodeBase64(char *Src,char *Dst,int DstLen)
+{
+ int Result=0;
+ char Locator=0,MiniResult[4];
+ char *End=Dst+DstLen;
+
+ MiniResult[0]=MiniResult[1]=MiniResult[2]=MiniResult[3]=0;
+
+#ifdef DEBUG_DECODEBASE64
+ char *DstTemp=Dst;
+ DebugLog(DecodeFile,"<Decode Base64><Input>\n%s\n</Input>\n",Src);
+#endif
+ while(*Src!=0 && DstLen && Dst!=End)
+ {
+ if ((*Src==0x0D)||(*Src==0x0A)) {
+ Src++;
+ continue;
+ }
+ if ((!(Result=FromBase64(*Src,MiniResult+Locator)) && (*Src==0)) || Locator++==3) //end_of_str || end_of_4_bytes
+ {
+ Locator=0; //next write to the first byte
+ *Dst++=(char)((MiniResult[0]<<2) | (MiniResult[1]>>4));
+ if (Dst==End) goto end; //DstLen exceeded?
+ *Dst++=(char)((MiniResult[1]<<4) | (MiniResult[2]>>2));
+ if (Dst==End) goto end; //someones don't like goto, but not me
+ *Dst++=(char)((MiniResult[2]<<6) | MiniResult[3]);
+ if (!Result && (*Src==0)) goto end; //end of string?
+ MiniResult[0]=MiniResult[1]=MiniResult[2]=MiniResult[3]=0; //zero 4byte buffer for next loop
+ }
+ if (!Result) return 0; //unrecognised character occured
+ Src++;
+ }
+end:
+ *Dst=0;
+#ifdef DEBUG_DECODEBASE64
+ DebugLog(DecodeFile,"<Output>\n%s\n</Output></Decode Base64>",DstTemp);
+#endif
+ return 1;
+}
+
+
+
+int ConvertStringToUnicode(char *stream,unsigned int cp,WCHAR **out)
+{
+ CPINFO CPInfo;
+ WCHAR *temp,*src=*out,*dest;
+ size_t outlen;
+ int streamlen,Index;
+
+ //codepages, which require to have set 0 in dwFlags parameter when calling MultiByteToWideChar
+ DWORD CodePagesZeroFlags[]={50220,50221,50222,50225,50227,50229,52936,54936,57002,57003,57004,57005,57006,57007,57008,57009,57010,57011,65000,65001};
+
+ if ((cp!=CP_ACP) && (cp!=CP_OEMCP) && (cp!=CP_MACCP) && (cp!=CP_THREAD_ACP) && (cp!=CP_SYMBOL) && (cp!=CP_UTF7) && (cp!=CP_UTF8) && !GetCPInfo(cp,&CPInfo))
+ cp=CP_ACP;
+#ifdef DEBUG_DECODECODEPAGE
+ DebugLog(DecodeFile,"<CodePage #>%d</CodePage #>",cp);
+#endif
+
+ for (Index=0;Index<sizeof(CodePagesZeroFlags)/sizeof(CodePagesZeroFlags[0]);Index++)
+ if (CodePagesZeroFlags[Index]==cp)
+ {
+ Index=-1;
+ break;
+ }
+ if (Index==-1)
+ streamlen=MultiByteToWideChar(cp,0,stream,-1,NULL,0);
+ else
+ streamlen=MultiByteToWideChar(cp,MB_USEGLYPHCHARS,stream,-1,NULL,0);
+
+ if (*out!=NULL)
+ outlen=wcslen(*out);
+ else
+ outlen=0;
+ temp=new WCHAR[streamlen+outlen+1];
+
+ if (*out!=NULL)
+ {
+ for (dest=temp;*src!=(WCHAR)0;src++,dest++) //copy old string from *out to temp
+ *dest=*src;
+// *dest++=L' '; //add space?
+ delete[] *out;
+ }
+ else
+ dest=temp;
+ *out=temp;
+
+ if (Index==-1)
+ {
+ if (!MultiByteToWideChar(cp,0,stream,-1,dest,streamlen))
+ return 0;
+ }
+ else
+ {
+ if (!MultiByteToWideChar(cp,MB_USEGLYPHCHARS,stream,-1,dest,streamlen))
+ return 0;
+ }
+ return 1;
+}
+
+void ConvertCodedStringToUnicode(char *stream,WCHAR **storeto,DWORD cp,int mode)
+{
+ char *start=stream,*finder,*finderend;
+ char Encoding=0;
+ char *DecodedResult=NULL;
+
+ if (stream==NULL)
+ return;
+
+ while(WS(start)) start++;
+ WCHAR *tempstore=0;
+ if (!ConvertStringToUnicode(stream,cp,&tempstore))return;
+
+ size_t tempstoreLength = wcslen(tempstore);
+
+ size_t outind = 0;
+ while(*start!=0){
+ if (CODES(start)) {
+ finder=start+2;finderend=finder;
+ while(!CODED(finderend) && !EOS(finderend)) finderend++;
+ start = finderend;
+ if (CODED(finderend))
+ {
+ Encoding=*(finderend+1);
+ switch(Encoding)
+ {
+ case 'b':
+ case 'B':
+ case 'q':
+ case 'Q':
+ break;
+ default:
+ goto NotEncoded;
+ }
+ if (-1==(cp=(DWORD)GetCharsetFromString(finder,finderend-finder)))
+ cp=CP_ACP;
+ if (Encoding!=0)
+ {
+ int size,codeend;
+ char *pcodeend;
+
+ finder=finderend+2;
+ if (CODED(finder))
+ finder++;
+ while(WS(finder)) finder++;
+ finderend=finder;
+ while(!CODEE(finderend) && !EOS(finderend)) finderend++;
+ if (codeend=CODEE(finderend))
+ pcodeend=finderend;
+ while(WS(finderend-1)) finderend--;
+ if ((mode==MIME_MAIL) && (((*finder=='"') && (*(finderend-1)=='"'))))
+ {
+ finder++;
+ finderend--;
+ }
+ //*finderend=(char)0;
+ char * oneWordEncoded = new char[finderend-finder+1];
+ strncpy(oneWordEncoded,finder,finderend-finder);
+ oneWordEncoded[finderend-finder]=0;
+ switch(Encoding)
+ {
+ case 'b':
+ case 'B':
+ size=(finderend-finder)*3/4+3+1+1;
+ break;
+ case 'q':
+ case 'Q':
+ size=finderend-finder+1+1;
+ break;
+ }
+ if (DecodedResult!=NULL)
+ delete[] DecodedResult;
+ DecodedResult=new char[size+1];
+ switch(Encoding)
+ {
+ case 'q':
+ case 'Q':
+ DecodeQuotedPrintable(oneWordEncoded,DecodedResult,size, TRUE);
+ break;
+ case 'b':
+ case 'B':
+ DecodeBase64(oneWordEncoded,DecodedResult,size);
+ break;
+ }
+ delete[] oneWordEncoded;
+ if (codeend)
+ finderend=pcodeend+2;
+ if (WS(finderend)) //if string continues and there's some whitespace, add space to string that is to be converted
+ {
+ size_t len=strlen(DecodedResult);
+ DecodedResult[len]=' ';
+ DecodedResult[len+1]=0;
+ finderend++;
+ }
+ WCHAR *oneWord=0;
+ if (ConvertStringToUnicode(DecodedResult,cp,&oneWord)) {
+ size_t len = wcslen(oneWord);
+ memcpy(&tempstore[outind],oneWord,len*sizeof(WCHAR));
+ outind += len;
+ }
+ delete oneWord;
+ oneWord = 0;
+ delete[] DecodedResult; DecodedResult = 0;
+ start = finderend;
+ } else if (!EOS(start)) start++;
+ } else if (!EOS(start)) start++;
+ }else{
+NotEncoded:
+ tempstore[outind] = tempstore[start-stream];
+ outind++;
+ if (outind > tempstoreLength) break;
+ start++;
+ }
+ }
+ tempstore[outind] = 0;
+ *storeto = tempstore;
+}
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