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RetroZilla/mailnews/base/util/nsMsgUtils.cpp
Ryan Nematz 2f2ae146c0 first commit
2015-10-20 23:03:22 -04:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Pierre Phaneuf <pp@ludusdesign.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "msgCore.h"
#include "nsIMsgHdr.h"
#include "nsMsgUtils.h"
#include "nsString.h"
#include "nsReadableUtils.h"
#include "nsFileSpec.h"
#include "nsEscape.h"
#include "nsIServiceManager.h"
#include "nsCOMPtr.h"
#include "nsIImapUrl.h"
#include "nsIMailboxUrl.h"
#include "nsINntpUrl.h"
#include "nsMsgNewsCID.h"
#include "nsMsgLocalCID.h"
#include "nsMsgBaseCID.h"
#include "nsMsgImapCID.h"
#include "nsMsgI18N.h"
#include "nsNativeCharsetUtils.h"
#include "nsUnicharUtils.h"
#include "prprf.h"
#include "nsNetCID.h"
#include "nsIIOService.h"
#include "nsIRDFService.h"
#include "nsIMimeConverter.h"
#include "nsMsgMimeCID.h"
#include "nsIPrefService.h"
#include "nsIPrefBranch.h"
#include "nsISupportsPrimitives.h"
#include "nsIPrefLocalizedString.h"
#include "nsIRelativeFilePref.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsICategoryManager.h"
#include "nsCategoryManagerUtils.h"
#include "nsISpamSettings.h"
#include "nsISignatureVerifier.h"
#include "nsICryptoHash.h"
#include "nsNativeCharsetUtils.h"
#include "nsIRssIncomingServer.h"
#include "nsIMsgFolder.h"
#include "nsIMsgMessageService.h"
#include "nsIMsgAccountManager.h"
static NS_DEFINE_CID(kImapUrlCID, NS_IMAPURL_CID);
static NS_DEFINE_CID(kCMailboxUrl, NS_MAILBOXURL_CID);
static NS_DEFINE_CID(kCNntpUrlCID, NS_NNTPURL_CID);
#define ILLEGAL_FOLDER_CHARS ";#"
#define ILLEGAL_FOLDER_CHARS_AS_FIRST_LETTER "."
#define ILLEGAL_FOLDER_CHARS_AS_LAST_LETTER ".~ "
#define NS_PASSWORDMANAGER_CATEGORY "passwordmanager"
static PRBool gInitPasswordManager = PR_FALSE;
nsresult GetMessageServiceContractIDForURI(const char *uri, nsCString &contractID)
{
nsresult rv = NS_OK;
//Find protocol
nsCAutoString uriStr(uri);
PRInt32 pos = uriStr.FindChar(':');
if(pos == kNotFound)
return NS_ERROR_FAILURE;
nsCAutoString protocol;
uriStr.Left(protocol, pos);
if (protocol.Equals("file") && uriStr.Find("application/x-message-display") != kNotFound)
protocol.Assign("mailbox");
//Build message service contractid
contractID = "@mozilla.org/messenger/messageservice;1?type=";
contractID += protocol.get();
return rv;
}
nsresult GetMessageServiceFromURI(const char *uri, nsIMsgMessageService **aMessageService)
{
nsresult rv;
nsCAutoString contractID;
rv = GetMessageServiceContractIDForURI(uri, contractID);
NS_ENSURE_SUCCESS(rv,rv);
nsCOMPtr <nsIMsgMessageService> msgService = do_GetService(contractID.get(), &rv);
NS_ENSURE_SUCCESS(rv,rv);
NS_IF_ADDREF(*aMessageService = msgService);
return rv;
}
nsresult GetMsgDBHdrFromURI(const char *uri, nsIMsgDBHdr **msgHdr)
{
nsCOMPtr <nsIMsgMessageService> msgMessageService;
nsresult rv = GetMessageServiceFromURI(uri, getter_AddRefs(msgMessageService));
NS_ENSURE_SUCCESS(rv,rv);
if (!msgMessageService) return NS_ERROR_FAILURE;
return msgMessageService->MessageURIToMsgHdr(uri, msgHdr);
}
nsresult CreateStartupUrl(const char *uri, nsIURI** aUrl)
{
nsresult rv = NS_ERROR_NULL_POINTER;
if (!uri || !*uri || !aUrl) return rv;
*aUrl = nsnull;
// XXX fix this, so that base doesn't depend on imap, local or news.
// we can't do NS_NewURI(uri, aUrl), because these are imap-message://, mailbox-message://, news-message:// uris.
// I think we should do something like GetMessageServiceFromURI() to get the service, and then have the service create the
// appropriate nsI*Url, and then QI to nsIURI, and return it.
// see bug #110689
if (PL_strncasecmp(uri, "imap", 4) == 0)
{
nsCOMPtr<nsIImapUrl> imapUrl = do_CreateInstance(kImapUrlCID, &rv);
if (NS_SUCCEEDED(rv) && imapUrl)
rv = imapUrl->QueryInterface(NS_GET_IID(nsIURI),
(void**) aUrl);
}
else if (PL_strncasecmp(uri, "mailbox", 7) == 0)
{
nsCOMPtr<nsIMailboxUrl> mailboxUrl = do_CreateInstance(kCMailboxUrl, &rv);
if (NS_SUCCEEDED(rv) && mailboxUrl)
rv = mailboxUrl->QueryInterface(NS_GET_IID(nsIURI),
(void**) aUrl);
}
else if (PL_strncasecmp(uri, "news", 4) == 0)
{
nsCOMPtr<nsINntpUrl> nntpUrl = do_CreateInstance(kCNntpUrlCID, &rv);
if (NS_SUCCEEDED(rv) && nntpUrl)
rv = nntpUrl->QueryInterface(NS_GET_IID(nsIURI),
(void**) aUrl);
}
if (*aUrl)
(*aUrl)->SetSpec(nsDependentCString(uri));
return rv;
}
// Where should this live? It's a utility used to convert a string priority,
// e.g., "High, Low, Normal" to an enum.
// Perhaps we should have an interface that groups together all these
// utilities...
nsresult NS_MsgGetPriorityFromString(
const char * const priority,
nsMsgPriorityValue & outPriority)
{
if (!priority)
return NS_ERROR_NULL_POINTER;
// Note: Checking the values separately and _before_ the names,
// hoping for a much faster match;
// Only _drawback_, as "priority" handling is not truly specified:
// some softwares may have the number meanings reversed (1=Lowest) !?
if (PL_strchr(priority, '1'))
outPriority = nsMsgPriority::highest;
else if (PL_strchr(priority, '2'))
outPriority = nsMsgPriority::high;
else if (PL_strchr(priority, '3'))
outPriority = nsMsgPriority::normal;
else if (PL_strchr(priority, '4'))
outPriority = nsMsgPriority::low;
else if (PL_strchr(priority, '5'))
outPriority = nsMsgPriority::lowest;
else if (PL_strcasestr(priority, "Highest"))
outPriority = nsMsgPriority::highest;
// Important: "High" must be tested after "Highest" !
else if (PL_strcasestr(priority, "High") ||
PL_strcasestr(priority, "Urgent"))
outPriority = nsMsgPriority::high;
else if (PL_strcasestr(priority, "Normal"))
outPriority = nsMsgPriority::normal;
else if (PL_strcasestr(priority, "Lowest"))
outPriority = nsMsgPriority::lowest;
// Important: "Low" must be tested after "Lowest" !
else if (PL_strcasestr(priority, "Low") ||
PL_strcasestr(priority, "Non-urgent"))
outPriority = nsMsgPriority::low;
else
// "Default" case gets default value.
outPriority = nsMsgPriority::Default;
return NS_OK;
}
nsresult NS_MsgGetPriorityValueString(
const nsMsgPriorityValue p,
nsACString & outValueString)
{
switch (p)
{
case nsMsgPriority::highest:
outValueString.AssignLiteral("1");
break;
case nsMsgPriority::high:
outValueString.AssignLiteral("2");
break;
case nsMsgPriority::normal:
outValueString.AssignLiteral("3");
break;
case nsMsgPriority::low:
outValueString.AssignLiteral("4");
break;
case nsMsgPriority::lowest:
outValueString.AssignLiteral("5");
break;
case nsMsgPriority::none:
case nsMsgPriority::notSet:
// Note: '0' is a "fake" value; we expect to never be in this case.
outValueString.AssignLiteral("0");
break;
default:
NS_ASSERTION(PR_FALSE, "invalid priority value");
}
return NS_OK;
}
nsresult NS_MsgGetUntranslatedPriorityName(
const nsMsgPriorityValue p,
nsACString & outName)
{
switch (p)
{
case nsMsgPriority::highest:
outName.AssignLiteral("Highest");
break;
case nsMsgPriority::high:
outName.AssignLiteral("High");
break;
case nsMsgPriority::normal:
outName.AssignLiteral("Normal");
break;
case nsMsgPriority::low:
outName.AssignLiteral("Low");
break;
case nsMsgPriority::lowest:
outName.AssignLiteral("Lowest");
break;
case nsMsgPriority::none:
case nsMsgPriority::notSet:
// Note: 'None' is a "fake" value; we expect to never be in this case.
outName.AssignLiteral("None");
break;
default:
NS_ASSERTION(PR_FALSE, "invalid priority value");
}
return NS_OK;
}
/* this used to be XP_StringHash2 from xp_hash.c */
/* phong's linear congruential hash */
static PRUint32 StringHash(const char *ubuf, PRInt32 len = -1)
{
unsigned char * buf = (unsigned char*) ubuf;
PRUint32 h=1;
unsigned char *end = buf + (len == -1 ? strlen(ubuf) : len);
while(buf < end) {
h = 0x63c63cd9*h + 0x9c39c33d + (int32)*buf;
buf++;
}
return h;
}
inline PRUint32 StringHash(const nsAutoString& str)
{
return StringHash(NS_REINTERPRET_CAST(const char*, str.get()),
str.Length() * 2);
}
// XXX : this may have other clients, in which case we'd better move it to
// xpcom/io/nsNativeCharsetUtils with nsAString in place of nsAutoString
static PRBool ConvertibleToNative(const nsAutoString& str)
{
nsCAutoString native;
nsAutoString roundTripped;
NS_CopyUnicodeToNative(str, native);
NS_CopyNativeToUnicode(native, roundTripped);
return str.Equals(roundTripped);
}
#if defined(XP_MAC)
const static PRUint32 MAX_LEN = 25;
#elif defined(XP_UNIX) || defined(XP_BEOS)
const static PRUint32 MAX_LEN = 55;
#elif defined(XP_WIN32)
const static PRUint32 MAX_LEN = 55;
#elif defined(XP_OS2)
const static PRUint32 MAX_LEN = 55;
#else
#error need_to_define_your_max_filename_length
#endif
nsresult NS_MsgHashIfNecessary(nsCAutoString &name)
{
NS_NAMED_LITERAL_CSTRING (illegalChars,
FILE_PATH_SEPARATOR FILE_ILLEGAL_CHARACTERS ILLEGAL_FOLDER_CHARS);
nsCAutoString str(name);
// Given a filename, make it safe for filesystem
// certain filenames require hashing because they
// are too long or contain illegal characters
PRInt32 illegalCharacterIndex = str.FindCharInSet(illegalChars);
// Need to check the first ('.') and last ('.', '~' and ' ') char
if (illegalCharacterIndex == kNotFound)
{
NS_NAMED_LITERAL_CSTRING (illegalFirstChars, ILLEGAL_FOLDER_CHARS_AS_FIRST_LETTER);
NS_NAMED_LITERAL_CSTRING (illegalLastChars, ILLEGAL_FOLDER_CHARS_AS_LAST_LETTER);
PRInt32 lastIndex = str.Length() - 1;
if(str.FindCharInSet(illegalFirstChars) == 0)
illegalCharacterIndex = 0;
else if(str.RFindCharInSet(illegalLastChars) == lastIndex)
illegalCharacterIndex = lastIndex;
else
illegalCharacterIndex = -1;
}
char hashedname[MAX_LEN + 1];
if (illegalCharacterIndex == kNotFound)
{
// no illegal chars, it's just too long
// keep the initial part of the string, but hash to make it fit
if (str.Length() > MAX_LEN)
{
PL_strncpy(hashedname, str.get(), MAX_LEN + 1);
PR_snprintf(hashedname + MAX_LEN - 8, 9, "%08lx",
(unsigned long) StringHash(str.get()));
name = hashedname;
}
}
else
{
// found illegal chars, hash the whole thing
// if we do substitution, then hash, two strings
// could hash to the same value.
// for example, on mac: "foo__bar", "foo:_bar", "foo::bar"
// would map to "foo_bar". this way, all three will map to
// different values
PR_snprintf(hashedname, 9, "%08lx",
(unsigned long) StringHash(str.get()));
name = hashedname;
}
return NS_OK;
}
// XXX : The number of UTF-16 2byte code units are half the number of
// bytes in legacy encodings for CJK strings and non-Latin1 in UTF-8.
// The ratio can be 1/3 for CJK strings in UTF-8. However, we can
// get away with using the same MAX_LEN for nsCString and nsString
// because MAX_LEN is defined rather conservatively in the first place.
nsresult NS_MsgHashIfNecessary(nsAutoString &name)
{
PRInt32 illegalCharacterIndex = name.FindCharInSet(
FILE_PATH_SEPARATOR FILE_ILLEGAL_CHARACTERS ILLEGAL_FOLDER_CHARS);
// Need to check the first ('.') and last ('.', '~' and ' ') char
if (illegalCharacterIndex == kNotFound)
{
NS_NAMED_LITERAL_STRING (illegalFirstChars, ILLEGAL_FOLDER_CHARS_AS_FIRST_LETTER);
NS_NAMED_LITERAL_STRING (illegalLastChars, ILLEGAL_FOLDER_CHARS_AS_LAST_LETTER);
PRInt32 lastIndex = name.Length() - 1;
if(name.FindCharInSet(illegalFirstChars) == 0)
illegalCharacterIndex = 0;
else if(name.RFindCharInSet(illegalLastChars) == lastIndex)
illegalCharacterIndex = lastIndex;
else
illegalCharacterIndex = -1;
}
char hashedname[9];
PRInt32 keptLength = -1;
if (illegalCharacterIndex != kNotFound)
keptLength = illegalCharacterIndex;
else if (!ConvertibleToNative(name))
keptLength = 0;
else if (name.Length() > MAX_LEN)
{
keptLength = MAX_LEN-8;
// To avoid keeping only the high surrogate of a surrogate pair
if (IS_HIGH_SURROGATE(name.CharAt(keptLength-1)))
--keptLength;
}
if (keptLength >= 0) {
PR_snprintf(hashedname, 9, "%08lx", (unsigned long) StringHash(name));
name.Truncate(keptLength);
AppendASCIItoUTF16(hashedname, name);
}
return NS_OK;
}
nsresult NS_MsgCreatePathStringFromFolderURI(const char *aFolderURI,
nsCString& aPathCString,
PRBool aIsNewsFolder)
{
// A file name has to be in native charset. Here we convert
// to UTF-16 and check for 'unsafe' characters before converting
// to native charset.
NS_ENSURE_TRUE(IsUTF8(nsDependentCString(aFolderURI)), NS_ERROR_UNEXPECTED);
NS_ConvertUTF8toUTF16 oldPath(aFolderURI);
nsAutoString pathPiece, path;
PRInt32 startSlashPos = oldPath.FindChar('/');
PRInt32 endSlashPos = (startSlashPos >= 0)
? oldPath.FindChar('/', startSlashPos + 1) - 1 : oldPath.Length() - 1;
if (endSlashPos < 0)
endSlashPos = oldPath.Length();
// trick to make sure we only add the path to the first n-1 folders
PRBool haveFirst=PR_FALSE;
while (startSlashPos != -1) {
oldPath.Mid(pathPiece, startSlashPos + 1, endSlashPos - startSlashPos);
// skip leading '/' (and other // style things)
if (!pathPiece.IsEmpty())
{
// add .sbd onto the previous path
if (haveFirst)
{
path.AppendLiteral(".sbd/");
}
if (aIsNewsFolder)
{
nsCAutoString tmp;
CopyUTF16toMUTF7(pathPiece, tmp);
CopyASCIItoUTF16(tmp, pathPiece);
}
NS_MsgHashIfNecessary(pathPiece);
path += pathPiece;
haveFirst=PR_TRUE;
}
// look for the next slash
startSlashPos = endSlashPos + 1;
endSlashPos = (startSlashPos >= 0)
? oldPath.FindChar('/', startSlashPos + 1) - 1: oldPath.Length() - 1;
if (endSlashPos < 0)
endSlashPos = oldPath.Length();
if (startSlashPos >= endSlashPos)
break;
}
return NS_CopyUnicodeToNative(path, aPathCString);
}
/* Given a string and a length, removes any "Re:" strings from the front.
It also deals with that dumbass "Re[2]:" thing that some losing mailers do.
If mailnews.localizedRe is set, it will also remove localized "Re:" strings.
Returns PR_TRUE if it made a change, PR_FALSE otherwise.
The string is not altered: the pointer to its head is merely advanced,
and the length correspondingly decreased.
*/
PRBool NS_MsgStripRE(const char **stringP, PRUint32 *lengthP, char **modifiedSubject)
{
const char *s, *s_end;
const char *last;
PRUint32 L;
PRBool result = PR_FALSE;
NS_ASSERTION(stringP, "bad null param");
if (!stringP) return PR_FALSE;
// get localizedRe pref
nsresult rv;
nsXPIDLCString localizedRe;
nsCOMPtr<nsIPrefBranch> prefBranch(do_GetService(NS_PREFSERVICE_CONTRACTID, &rv));
if (NS_SUCCEEDED(rv))
prefBranch->GetCharPref("mailnews.localizedRe", getter_Copies(localizedRe));
// hardcoded "Re" so that noone can configure Mozilla standards incompatible
nsCAutoString checkString("Re,RE,re,rE");
if (!localizedRe.IsEmpty())
checkString.Append(NS_LITERAL_CSTRING(",") + localizedRe);
// decode the string
nsXPIDLCString decodedString;
nsCOMPtr<nsIMimeConverter> mimeConverter;
// we cannot strip "Re:" for MIME encoded subject without modifying the original
if (modifiedSubject && strstr(*stringP, "=?"))
{
mimeConverter = do_GetService(NS_MIME_CONVERTER_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv))
rv = mimeConverter->DecodeMimeHeader(*stringP, getter_Copies(decodedString));
}
s = decodedString ? decodedString.get() : *stringP;
L = lengthP ? *lengthP : strlen(s);
s_end = s + L;
last = s;
AGAIN:
while (s < s_end && IS_SPACE(*s))
s++;
const char *tokPtr = checkString.get();
while (*tokPtr)
{
//tokenize the comma separated list
PRSize tokenLength = 0;
while (*tokPtr && *tokPtr != ',') {
tokenLength++;
tokPtr++;
}
//check if the beginning of s is the actual token
if (tokenLength && !strncmp(s, tokPtr - tokenLength, tokenLength))
{
if (s[tokenLength] == ':')
{
s = s + tokenLength + 1; /* Skip over "Re:" */
result = PR_TRUE; /* Yes, we stripped it. */
goto AGAIN; /* Skip whitespace and try again. */
}
else if (s[tokenLength] == '[' || s[tokenLength] == '(')
{
const char *s2 = s + tokenLength + 1; /* Skip over "Re[" */
/* Skip forward over digits after the "[". */
while (s2 < (s_end - 2) && IS_DIGIT(*s2))
s2++;
/* Now ensure that the following thing is "]:"
Only if it is do we alter `s'. */
if ((s2[0] == ']' || s2[0] == ')') && s2[1] == ':')
{
s = s2 + 2; /* Skip over "]:" */
result = PR_TRUE; /* Yes, we stripped it. */
goto AGAIN; /* Skip whitespace and try again. */
}
}
}
if (*tokPtr)
tokPtr++;
}
if (decodedString)
{
// encode the string back if any modification is made
if (s != decodedString.get())
{
// extract between "=?" and "?"
// e.g. =?ISO-2022-JP?
const char *p1 = strstr(*stringP, "=?");
if (p1)
{
p1 += sizeof("=?")-1; // skip "=?"
const char *p2 = strchr(p1, '?'); // then search for '?'
if (p2)
{
char charset[kMAX_CSNAME] = "";
if (kMAX_CSNAME >= (p2 - p1))
strncpy(charset, p1, p2 - p1);
rv = mimeConverter->EncodeMimePartIIStr_UTF8(s, PR_FALSE, charset, sizeof("Subject:"),
kMIME_ENCODED_WORD_SIZE, modifiedSubject);
if (NS_SUCCEEDED(rv))
return result;
}
}
}
else
s = *stringP; // no modification, set the original encoded string
}
/* Decrease length by difference between current ptr and original ptr.
Then store the current ptr back into the caller. */
if (lengthP)
*lengthP -= (s - (*stringP));
*stringP = s;
return result;
}
/* Very similar to strdup except it free's too
*/
char * NS_MsgSACopy (char **destination, const char *source)
{
if(*destination)
{
PR_Free(*destination);
*destination = 0;
}
if (! source)
*destination = nsnull;
else
{
*destination = (char *) PR_Malloc (PL_strlen(source) + 1);
if (*destination == nsnull)
return(nsnull);
PL_strcpy (*destination, source);
}
return *destination;
}
/* Again like strdup but it concatinates and free's and uses Realloc
*/
char * NS_MsgSACat (char **destination, const char *source)
{
if (source && *source)
if (*destination)
{
int length = PL_strlen (*destination);
*destination = (char *) PR_Realloc (*destination, length + PL_strlen(source) + 1);
if (*destination == nsnull)
return(nsnull);
PL_strcpy (*destination + length, source);
}
else
{
*destination = (char *) PR_Malloc (PL_strlen(source) + 1);
if (*destination == nsnull)
return(nsnull);
PL_strcpy (*destination, source);
}
return *destination;
}
nsresult NS_MsgEscapeEncodeURLPath(const nsAString& aStr, nsAFlatCString& aResult)
{
char *escapedString = nsEscape(NS_ConvertUTF16toUTF8(aStr).get(), url_Path);
if (!*escapedString)
return NS_ERROR_OUT_OF_MEMORY;
aResult.Adopt(escapedString);
return NS_OK;
}
nsresult NS_MsgDecodeUnescapeURLPath(const nsACString& aPath,
nsAString& aResult)
{
nsCAutoString unescapedName;
NS_UnescapeURL(PromiseFlatCString(aPath),
esc_FileBaseName|esc_Forced|esc_AlwaysCopy,
unescapedName);
CopyUTF8toUTF16(unescapedName, aResult);
return NS_OK;
}
PRBool WeAreOffline()
{
nsresult rv = NS_OK;
PRBool offline = PR_FALSE;
nsCOMPtr <nsIIOService> ioService = do_GetService(NS_IOSERVICE_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv) && ioService)
ioService->GetOffline(&offline);
return offline;
}
nsresult GetExistingFolder(const char *aFolderURI, nsIMsgFolder **aFolder)
{
NS_ENSURE_ARG_POINTER(aFolderURI);
NS_ENSURE_ARG_POINTER(aFolder);
*aFolder = nsnull;
nsresult rv;
nsCOMPtr<nsIRDFService> rdf(do_GetService("@mozilla.org/rdf/rdf-service;1", &rv));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIRDFResource> resource;
rv = rdf->GetResource(nsDependentCString(aFolderURI), getter_AddRefs(resource));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr <nsIMsgFolder> thisFolder;
thisFolder = do_QueryInterface(resource, &rv);
NS_ENSURE_SUCCESS(rv, rv);
// Parent doesn't exist means that this folder doesn't exist.
nsCOMPtr<nsIMsgFolder> parentFolder;
rv = thisFolder->GetParent(getter_AddRefs(parentFolder));
if (NS_SUCCEEDED(rv) && parentFolder)
NS_ADDREF(*aFolder = thisFolder);
return rv;
}
PRBool IsAFromSpaceLine(char *start, const char *end)
{
nsresult rv = PR_FALSE;
while ((start < end) && (*start == '>'))
start++;
// If the leading '>'s are followed by an 'F' then we have a possible case here.
if ( (*start == 'F') && (end-start > 4) && !strncmp(start, "From ", 5) )
rv = PR_TRUE;
return rv;
}
//
// This function finds all lines starting with "From " or "From " preceeding
// with one or more '>' (ie, ">From", ">>From", etc) in the input buffer
// (between 'start' and 'end') and prefix them with a ">" .
//
nsresult EscapeFromSpaceLine(nsIFileSpec *pDst, char *start, const char *end)
{
nsresult rv;
char *pChar;
PRInt32 written;
pChar = start;
while (start < end)
{
while ((pChar < end) && (*pChar != nsCRT::CR) && (*(pChar+1) != nsCRT::LF))
pChar++;
if (pChar < end)
{
// Found a line so check if it's a qualified "From " line.
if (IsAFromSpaceLine(start, pChar))
rv = pDst->Write(">", 1, &written);
PRInt32 lineTerminatorCount = (*(pChar + 1) == nsCRT::LF) ? 2 : 1;
rv = pDst->Write(start, pChar - start + lineTerminatorCount, &written);
NS_ENSURE_SUCCESS(rv,rv);
pChar += lineTerminatorCount;
start = pChar;
}
else if (start < end)
{
// Check and flush out the remaining data and we're done.
if (IsAFromSpaceLine(start, end))
rv = pDst->Write(">", 1, &written);
rv = pDst->Write(start, end-start, &written);
NS_ENSURE_SUCCESS(rv,rv);
break;
}
}
return NS_OK;
}
nsresult CreateServicesForPasswordManager()
{
if (!gInitPasswordManager)
{
// Initialize the password manager category
gInitPasswordManager = PR_TRUE;
return NS_CreateServicesFromCategory(NS_PASSWORDMANAGER_CATEGORY,
nsnull,
NS_PASSWORDMANAGER_CATEGORY);
}
return NS_OK;
}
nsresult IsRFC822HeaderFieldName(const char *aHdr, PRBool *aResult)
{
NS_ENSURE_ARG_POINTER(aHdr);
NS_ENSURE_ARG_POINTER(aResult);
PRUint32 length = strlen(aHdr);
for(PRUint32 i=0; i<length; i++)
{
char c = aHdr[i];
if ( c < '!' || c == ':' || c > '~')
{
*aResult = PR_FALSE;
return NS_OK;
}
}
*aResult = PR_TRUE;
return NS_OK;
}
// Warning, currently this routine only works for the Junk Folder
nsresult
GetOrCreateFolder(const nsACString &aURI, nsIUrlListener *aListener)
{
nsresult rv;
nsCOMPtr <nsIRDFService> rdf = do_GetService("@mozilla.org/rdf/rdf-service;1", &rv);
NS_ENSURE_SUCCESS(rv, rv);
// get the corresponding RDF resource
// RDF will create the folder resource if it doesn't already exist
nsCOMPtr<nsIRDFResource> resource;
rv = rdf->GetResource(aURI, getter_AddRefs(resource));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr <nsIMsgFolder> folderResource;
folderResource = do_QueryInterface(resource, &rv);
NS_ENSURE_SUCCESS(rv, rv);
// don't check validity of folder - caller will handle creating it
nsCOMPtr<nsIMsgIncomingServer> server;
// make sure that folder hierarchy is built so that legitimate parent-child relationship is established
rv = folderResource->GetServer(getter_AddRefs(server));
NS_ENSURE_SUCCESS(rv, rv);
if (!server)
return NS_ERROR_UNEXPECTED;
nsCOMPtr <nsIMsgFolder> msgFolder;
rv = server->GetMsgFolderFromURI(folderResource, nsCAutoString(aURI).get(), getter_AddRefs(msgFolder));
NS_ENSURE_SUCCESS(rv,rv);
nsCOMPtr <nsIMsgFolder> parent;
rv = msgFolder->GetParent(getter_AddRefs(parent));
if (NS_FAILED(rv) || !parent)
{
nsCOMPtr <nsIFileSpec> folderPath;
// for local folders, path is to the berkeley mailbox.
// for imap folders, path needs to have .msf appended to the name
msgFolder->GetPath(getter_AddRefs(folderPath));
nsXPIDLCString type;
rv = server->GetType(getter_Copies(type));
NS_ENSURE_SUCCESS(rv,rv);
PRBool isImapFolder = type.Equals("imap");
// if we can't get the path from the folder, then try to create the storage.
// for imap, it doesn't matter if the .msf file exists - it still might not
// exist on the server, so we should try to create it
PRBool exists = PR_FALSE;
if (!isImapFolder && folderPath)
folderPath->Exists(&exists);
if (!exists)
{
// Hack to work around a localization bug with the Junk Folder.
// Please see Bug #270261 for more information...
nsXPIDLString localizedJunkName;
msgFolder->GetName(getter_Copies(localizedJunkName));
// force the junk folder name to be Junk so it gets created on disk correctly...
msgFolder->SetName(NS_LITERAL_STRING("Junk").get());
rv = msgFolder->CreateStorageIfMissing(aListener);
NS_ENSURE_SUCCESS(rv,rv);
// now restore the localized folder name...
msgFolder->SetName(localizedJunkName.get());
// XXX TODO
// JUNK MAIL RELATED
// ugh, I hate this hack
// we have to do this (for now)
// because imap and local are different (one creates folder asynch, the other synch)
// one will notify the listener, one will not.
// I blame nsMsgCopy.
// we should look into making it so no matter what the folder type
// we always call the listener
// this code should move into local folder's version of CreateStorageIfMissing()
if (!isImapFolder && aListener) {
rv = aListener->OnStartRunningUrl(nsnull);
NS_ENSURE_SUCCESS(rv,rv);
rv = aListener->OnStopRunningUrl(nsnull, NS_OK);
NS_ENSURE_SUCCESS(rv,rv);
}
}
}
else {
// if the folder exists, we should set the junk flag on it
// which is what the listener will do
if (aListener) {
rv = aListener->OnStartRunningUrl(nsnull);
NS_ENSURE_SUCCESS(rv,rv);
rv = aListener->OnStopRunningUrl(nsnull, NS_OK);
NS_ENSURE_SUCCESS(rv,rv);
}
}
return NS_OK;
}
nsresult IsRSSArticle(nsIURI * aMsgURI, PRBool *aIsRSSArticle)
{
nsresult rv;
*aIsRSSArticle = PR_FALSE;
nsCOMPtr<nsIMsgMessageUrl> msgUrl = do_QueryInterface(aMsgURI, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsXPIDLCString resourceURI;
msgUrl->GetUri(getter_Copies(resourceURI));
// get the msg service for this URI
nsCOMPtr<nsIMsgMessageService> msgService;
rv = GetMessageServiceFromURI(resourceURI.get(), getter_AddRefs(msgService));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIMsgDBHdr> msgHdr;
rv = msgService->MessageURIToMsgHdr(resourceURI, getter_AddRefs(msgHdr));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIMsgMailNewsUrl> mailnewsUrl = do_QueryInterface(aMsgURI, &rv);
NS_ENSURE_SUCCESS(rv, rv);
// get the folder and the server from the msghdr
nsCOMPtr<nsIRssIncomingServer> rssServer;
nsCOMPtr<nsIMsgFolder> folder;
rv = msgHdr->GetFolder(getter_AddRefs(folder));
if (NS_SUCCEEDED(rv) && folder)
{
nsCOMPtr<nsIMsgIncomingServer> server;
folder->GetServer(getter_AddRefs(server));
rssServer = do_QueryInterface(server);
if (rssServer)
*aIsRSSArticle = PR_TRUE;
}
return rv;
}
// digest needs to be a pointer to a DIGEST_LENGTH (16) byte buffer
nsresult MSGCramMD5(const char *text, PRInt32 text_len, const char *key, PRInt32 key_len, unsigned char *digest)
{
nsresult rv;
nsCAutoString hash;
nsCOMPtr<nsICryptoHash> hasher = do_CreateInstance("@mozilla.org/security/hash;1", &rv);
NS_ENSURE_SUCCESS(rv, rv);
// this code adapted from http://www.cis.ohio-state.edu/cgi-bin/rfc/rfc2104.html
char innerPad[65]; /* inner padding - key XORd with innerPad */
char outerPad[65]; /* outer padding - key XORd with outerPad */
int i;
/* if key is longer than 64 bytes reset it to key=MD5(key) */
if (key_len > 64)
{
rv = hasher->Init(nsICryptoHash::MD5);
NS_ENSURE_SUCCESS(rv, rv);
rv = hasher->Update((const PRUint8*) key, key_len);
NS_ENSURE_SUCCESS(rv, rv);
rv = hasher->Finish(PR_FALSE, hash);
NS_ENSURE_SUCCESS(rv, rv);
key = hash.get();
key_len = DIGEST_LENGTH;
}
/*
* the HMAC_MD5 transform looks like:
*
* MD5(K XOR outerPad, MD5(K XOR innerPad, text))
*
* where K is an n byte key
* innerPad is the byte 0x36 repeated 64 times
* outerPad is the byte 0x5c repeated 64 times
* and text is the data being protected
*/
/* start out by storing key in pads */
memset(innerPad, 0, sizeof innerPad);
memset(outerPad, 0, sizeof outerPad);
memcpy(innerPad, key, key_len);
memcpy(outerPad, key, key_len);
/* XOR key with innerPad and outerPad values */
for (i=0; i<64; i++)
{
innerPad[i] ^= 0x36;
outerPad[i] ^= 0x5c;
}
/*
* perform inner MD5
*/
nsCAutoString result;
rv = hasher->Init(nsICryptoHash::MD5); /* init context for 1st pass */
rv = hasher->Update((const PRUint8*)innerPad, 64); /* start with inner pad */
rv = hasher->Update((const PRUint8*)text, text_len); /* then text of datagram */
rv = hasher->Finish(PR_FALSE, result); /* finish up 1st pass */
/*
* perform outer MD5
*/
hasher->Init(nsICryptoHash::MD5); /* init context for 2nd pass */
rv = hasher->Update((const PRUint8*)outerPad, 64); /* start with outer pad */
rv = hasher->Update((const PRUint8*)result.get(), 16);/* then results of 1st hash */
rv = hasher->Finish(PR_FALSE, result); /* finish up 2nd pass */
if (result.Length() != DIGEST_LENGTH)
return NS_ERROR_UNEXPECTED;
memcpy(digest, result.get(), DIGEST_LENGTH);
return rv;
}
// digest needs to be a pointer to a DIGEST_LENGTH (16) byte buffer
nsresult MSGApopMD5(const char *text, PRInt32 text_len, const char *password, PRInt32 password_len, unsigned char *digest)
{
nsresult rv;
nsCAutoString result;
nsCOMPtr<nsICryptoHash> hasher = do_CreateInstance("@mozilla.org/security/hash;1", &rv);
NS_ENSURE_SUCCESS(rv, rv);
rv = hasher->Init(nsICryptoHash::MD5);
NS_ENSURE_SUCCESS(rv, rv);
rv = hasher->Update((const PRUint8*) text, text_len);
NS_ENSURE_SUCCESS(rv, rv);
rv = hasher->Update((const PRUint8*) password, password_len);
NS_ENSURE_SUCCESS(rv, rv);
rv = hasher->Finish(PR_FALSE, result);
NS_ENSURE_SUCCESS(rv, rv);
if (result.Length() != DIGEST_LENGTH)
return NS_ERROR_UNEXPECTED;
memcpy(digest, result.get(), DIGEST_LENGTH);
return rv;
}
NS_MSG_BASE nsresult NS_GetPersistentFile(const char *relPrefName,
const char *absPrefName,
const char *dirServiceProp,
PRBool& gotRelPref,
nsILocalFile **aFile)
{
NS_ENSURE_ARG_POINTER(aFile);
*aFile = nsnull;
NS_ENSURE_ARG(relPrefName);
NS_ENSURE_ARG(absPrefName);
gotRelPref = PR_FALSE;
nsCOMPtr<nsIPrefService> prefService(do_GetService(NS_PREFSERVICE_CONTRACTID));
if (!prefService) return NS_ERROR_FAILURE;
nsCOMPtr<nsIPrefBranch> mainBranch;
prefService->GetBranch(nsnull, getter_AddRefs(mainBranch));
if (!mainBranch) return NS_ERROR_FAILURE;
nsCOMPtr<nsILocalFile> localFile;
// Get the relative first
nsCOMPtr<nsIRelativeFilePref> relFilePref;
mainBranch->GetComplexValue(relPrefName,
NS_GET_IID(nsIRelativeFilePref), getter_AddRefs(relFilePref));
if (relFilePref) {
relFilePref->GetFile(getter_AddRefs(localFile));
NS_ASSERTION(localFile, "An nsIRelativeFilePref has no file.");
if (localFile)
gotRelPref = PR_TRUE;
}
// If not, get the old absolute
if (!localFile) {
mainBranch->GetComplexValue(absPrefName,
NS_GET_IID(nsILocalFile), getter_AddRefs(localFile));
// If not, and given a dirServiceProp, use directory service.
if (!localFile && dirServiceProp) {
nsCOMPtr<nsIProperties> dirService(do_GetService("@mozilla.org/file/directory_service;1"));
if (!dirService) return NS_ERROR_FAILURE;
dirService->Get(dirServiceProp, NS_GET_IID(nsILocalFile), getter_AddRefs(localFile));
if (!localFile) return NS_ERROR_FAILURE;
}
}
if (localFile) {
*aFile = localFile;
NS_ADDREF(*aFile);
return NS_OK;
}
return NS_ERROR_FAILURE;
}
NS_MSG_BASE nsresult NS_SetPersistentFile(const char *relPrefName,
const char *absPrefName,
nsILocalFile *aFile)
{
NS_ENSURE_ARG(relPrefName);
NS_ENSURE_ARG(absPrefName);
NS_ENSURE_ARG(aFile);
nsresult rv;
nsCOMPtr<nsIPrefService> prefService(do_GetService(NS_PREFSERVICE_CONTRACTID));
if (!prefService) return NS_ERROR_FAILURE;
nsCOMPtr<nsIPrefBranch> mainBranch;
prefService->GetBranch(nsnull, getter_AddRefs(mainBranch));
if (!mainBranch) return NS_ERROR_FAILURE;
// Write the absolute for backwards compatibilty's sake.
// Or, if aPath is on a different drive than the profile dir.
rv = mainBranch->SetComplexValue(absPrefName, NS_GET_IID(nsILocalFile), aFile);
// Write the relative path.
nsCOMPtr<nsIRelativeFilePref> relFilePref;
NS_NewRelativeFilePref(aFile, nsDependentCString(NS_APP_USER_PROFILE_50_DIR), getter_AddRefs(relFilePref));
if (relFilePref) {
nsresult rv2 = mainBranch->SetComplexValue(relPrefName, NS_GET_IID(nsIRelativeFilePref), relFilePref);
if (NS_FAILED(rv2) && NS_SUCCEEDED(rv))
mainBranch->ClearUserPref(relPrefName);
}
return rv;
}
NS_MSG_BASE nsresult NS_GetUnicharPreferenceWithDefault(nsIPrefBranch *prefBranch, //can be null, if so uses the root branch
const char *prefName,
const nsString& defValue,
nsString& prefValue)
{
NS_ENSURE_ARG(prefName);
nsCOMPtr<nsIPrefBranch> pbr;
if(!prefBranch) {
pbr = do_GetService(NS_PREFSERVICE_CONTRACTID);
prefBranch = pbr;
}
nsCOMPtr<nsISupportsString> str;
nsresult rv = prefBranch->GetComplexValue(prefName, NS_GET_IID(nsISupportsString), getter_AddRefs(str));
if (NS_SUCCEEDED(rv))
return str->GetData(prefValue);
prefValue = defValue;
return NS_OK;
}
NS_MSG_BASE nsresult NS_GetLocalizedUnicharPreferenceWithDefault(nsIPrefBranch *prefBranch, //can be null, if so uses the root branch
const char *prefName,
const nsString& defValue,
nsXPIDLString& prefValue)
{
NS_ENSURE_ARG(prefName);
nsCOMPtr<nsIPrefBranch> pbr;
if(!prefBranch) {
pbr = do_GetService(NS_PREFSERVICE_CONTRACTID);
prefBranch = pbr;
}
nsCOMPtr<nsIPrefLocalizedString> str;
nsresult rv = prefBranch->GetComplexValue(prefName, NS_GET_IID(nsIPrefLocalizedString), getter_AddRefs(str));
if (NS_SUCCEEDED(rv))
str->ToString(getter_Copies(prefValue));
else
prefValue = defValue;
return NS_OK;
}
void PRTime2Seconds(PRTime prTime, PRUint32 *seconds)
{
PRInt64 microSecondsPerSecond, intermediateResult;
LL_I2L(microSecondsPerSecond, PR_USEC_PER_SEC);
LL_DIV(intermediateResult, prTime, microSecondsPerSecond);
LL_L2UI((*seconds), intermediateResult);
}
void PRTime2Seconds(PRTime prTime, PRInt32 *seconds)
{
PRInt64 microSecondsPerSecond, intermediateResult;
LL_I2L(microSecondsPerSecond, PR_USEC_PER_SEC);
LL_DIV(intermediateResult, prTime, microSecondsPerSecond);
LL_L2I((*seconds), intermediateResult);
}
void Seconds2PRTime(PRUint32 seconds, PRTime *prTime)
{
PRInt64 microSecondsPerSecond, intermediateResult;
LL_I2L(microSecondsPerSecond, PR_USEC_PER_SEC);
LL_UI2L(intermediateResult, seconds);
LL_MUL((*prTime), intermediateResult, microSecondsPerSecond);
}
void MsgGenerateNowStr(nsACString &nowStr)
{
char dateBuf[100];
dateBuf[0] = '\0';
PRExplodedTime exploded;
PR_ExplodeTime(PR_Now(), PR_LocalTimeParameters, &exploded);
PR_FormatTimeUSEnglish(dateBuf, sizeof(dateBuf), "%a %b %d %H:%M:%S %Y", &exploded);
nowStr.Assign(dateBuf);
}
PRBool MsgFindKeyword(const nsACString &keyword, nsACString &keywords, nsACString::const_iterator &start, nsACString::const_iterator &end)
{
keywords.BeginReading(start);
keywords.EndReading(end);
if (*start == ' ')
start++;
nsACString::const_iterator saveStart(start), saveEnd(end);
while (PR_TRUE)
{
if (FindInReadable(keyword, start, end))
{
PRBool beginMatches = start == saveStart;
PRBool endMatches = end == saveEnd;
nsACString::const_iterator beforeStart(start);
beforeStart--;
// start and end point to the beginning and end of the match
if (beginMatches && (end == saveEnd || *end == ' ')
|| (endMatches && *beforeStart == ' ')
|| *beforeStart == ' ' && *end == ' ')
{
if (*end == ' ')
end++;
if (*beforeStart == ' ' && endMatches)
start--;
return PR_TRUE;
}
else
start = end; // advance past bogus match.
}
else
break;
}
return PR_FALSE;
}
PRBool MsgHostDomainIsTrusted(nsCString &host, nsCString &trustedMailDomains)
{
const char *domain, *domainEnd, *end;
PRUint32 hostLen, domainLen;
PRBool domainIsTrusted = PR_FALSE;
domain = trustedMailDomains.BeginReading();
domainEnd = trustedMailDomains.EndReading();
nsACString::const_iterator hostStart;
host.BeginReading(hostStart);
hostLen = host.Length();
do {
// skip any whitespace
while (*domain == ' ' || *domain == '\t')
++domain;
// find end of this domain in the string
end = strchr(domain, ',');
if (!end)
end = domainEnd;
// to see if the hostname is in the domain, check if the domain
// matches the end of the hostname.
domainLen = end - domain;
if (domainLen && hostLen >= domainLen) {
const char *hostTail = hostStart.get() + hostLen - domainLen;
if (PL_strncasecmp(domain, hostTail, domainLen) == 0)
{
// now, make sure either that the hostname is a direct match or
// that the hostname begins with a dot.
if (hostLen == domainLen || *hostTail == '.' || *(hostTail - 1) == '.')
{
domainIsTrusted = PR_TRUE;
break;
}
}
}
domain = end + 1;
} while (*end);
return domainIsTrusted;
}
nsresult MsgMailboxGetURI(const char *nativepath, nsCString &mailboxUri)
{
nsresult rv;
nsCOMPtr<nsIMsgAccountManager> accountManager =
do_GetService(NS_MSGACCOUNTMANAGER_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsISupportsArray> serverArray;
accountManager->GetAllServers(getter_AddRefs(serverArray));
// do a char*->fileSpec->char* conversion to normalize the path
nsFilePath filePath(nativepath);
PRUint32 cnt;
rv = serverArray->Count(&cnt);
NS_ENSURE_SUCCESS(rv, rv);
PRInt32 count = cnt;
PRInt32 i;
for (i=0; i<count; i++)
{
nsCOMPtr<nsIMsgIncomingServer> server = do_QueryElementAt(serverArray, i);
if (!server) continue;
// get the path string, convert it to an nsFilePath
nsCOMPtr<nsIFileSpec> nativeServerPath;
rv = server->GetLocalPath(getter_AddRefs(nativeServerPath));
if (NS_FAILED(rv)) continue;
nsFileSpec spec;
nativeServerPath->GetFileSpec(&spec);
nsFilePath serverPath(spec);
// check if filepath begins with serverPath
PRInt32 len = PL_strlen(serverPath);
if (PL_strncasecmp(serverPath, filePath, len) == 0)
{
nsXPIDLCString serverURI;
rv = server->GetServerURI(getter_Copies(serverURI));
if (NS_FAILED(rv)) continue;
// the relpath is just past the serverpath
const char *relpath = nativepath + len;
// skip past leading / if any
while (*relpath == '/')
relpath++;
nsCAutoString pathStr(relpath);
PRInt32 sbdIndex;
while((sbdIndex = pathStr.Find(".sbd", PR_TRUE)) != -1)
pathStr.Cut(sbdIndex, 4);
mailboxUri = serverURI;
mailboxUri.Append('/');
mailboxUri.Append(pathStr);
break;
}
}
return mailboxUri.IsEmpty() ? NS_ERROR_FAILURE : NS_OK;
}
NS_MSG_BASE void MsgStripQuotedPrintable (unsigned char *src)
{
// decode quoted printable text in place
if (!*src)
return;
unsigned char *dest = src;
int srcIdx = 0, destIdx = 0;
while (src[srcIdx] != 0)
{
if (src[srcIdx] == '=')
{
unsigned char *token = &src[srcIdx];
unsigned char c = 0;
// decode the first quoted char
if (token[1] >= '0' && token[1] <= '9')
c = token[1] - '0';
else if (token[1] >= 'A' && token[1] <= 'F')
c = token[1] - ('A' - 10);
else if (token[1] >= 'a' && token[1] <= 'f')
c = token[1] - ('a' - 10);
else
{
// first char after '=' isn't hex. check if it's a normal char
// or a soft line break. If it's a soft line break, eat the
// CR/LF/CRLF.
if (src[srcIdx + 1] == nsCRT::CR || src[srcIdx + 1] == nsCRT::LF)
{
srcIdx++; // soft line break, ignore the '=';
if (src[srcIdx] == nsCRT::CR || src[srcIdx] == nsCRT::LF)
{
srcIdx++;
if (src[srcIdx] == nsCRT::LF)
srcIdx++;
}
}
else // normal char, copy it.
{
dest[destIdx++] = src[srcIdx++]; // aka token[0]
}
continue;
}
// decode the second quoted char
c = (c << 4);
if (token[2] >= '0' && token[2] <= '9')
c += token[2] - '0';
else if (token[2] >= 'A' && token[2] <= 'F')
c += token[2] - ('A' - 10);
else if (token[2] >= 'a' && token[2] <= 'f')
c += token[2] - ('a' - 10);
else
{
// second char after '=' isn't hex. copy the '=' as a normal char and keep going
dest[destIdx++] = src[srcIdx++]; // aka token[0]
continue;
}
// if we got here, we successfully decoded a quoted printable sequence,
// so bump each pointer past it and move on to the next char;
dest[destIdx++] = c;
srcIdx += 3;
}
else
dest[destIdx++] = src[srcIdx++];
}
dest[destIdx] = src[srcIdx]; // null terminate
}
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