Issue #1258 - Part 1: Import mailnews, ldap, and mork from comm-esr52.9.1

1 files changed, 479 insertions, 0 deletions

diff --git a/mailnews/base/util/nsMsgI18N.cpp b/mailnews/base/util/nsMsgI18N.cpp
new file mode 100644
index 000000000..b79a4c196
--- /dev/null
+++ b/mailnews/base/util/nsMsgI18N.cpp
@@ -0,0 +1,479 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// as does this
+#include "nsICharsetConverterManager.h"
+#include "nsIPlatformCharset.h"
+#include "nsIServiceManager.h"
+
+#include "nsISupports.h"
+#include "nsIPrefBranch.h"
+#include "nsIPrefService.h"
+#include "nsIMimeConverter.h"
+#include "nsMsgUtils.h"
+#include "nsMsgI18N.h"
+#include "nsMsgMimeCID.h"
+#include "nsILineInputStream.h"
+#include "nsMimeTypes.h"
+#include "nsISaveAsCharset.h"
+#include "nsStringGlue.h"
+#include "prmem.h"
+#include "plstr.h"
+#include "nsUTF8Utils.h"
+#include "nsNetUtil.h"
+#include "nsCRTGlue.h"
+#include "nsComponentManagerUtils.h"
+#include "nsUnicharUtils.h"
+#include "nsIFileStreams.h"
+//
+// International functions necessary for composition
+//
+
+nsresult nsMsgI18NConvertFromUnicode(const char* aCharset,
+                                     const nsString& inString,
+                                     nsACString& outString,
+                                     bool aIsCharsetCanonical,
+                                     bool aReportUencNoMapping)
+{
+  if (inString.IsEmpty()) {
+    outString.Truncate();
+    return NS_OK;
+  }
+  // Note: This will hide a possible error if the Unicode contains more than one
+  // charset, e.g. Latin1 + Japanese.
+  else if (!aReportUencNoMapping && (!*aCharset ||
+             !PL_strcasecmp(aCharset, "us-ascii") ||
+             !PL_strcasecmp(aCharset, "ISO-8859-1"))) {
+    LossyCopyUTF16toASCII(inString, outString);
+    return NS_OK;
+  }
+  else if (!PL_strcasecmp(aCharset, "UTF-8")) {
+    CopyUTF16toUTF8(inString, outString);
+    return NS_OK;
+  }
+
+  nsresult rv;
+  nsCOMPtr <nsICharsetConverterManager> ccm = do_GetService(NS_CHARSETCONVERTERMANAGER_CONTRACTID, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+  nsCOMPtr <nsIUnicodeEncoder> encoder;
+
+  // get an unicode converter
+  if (aIsCharsetCanonical)  // optimize for modified UTF-7 used by IMAP
+    rv = ccm->GetUnicodeEncoderRaw(aCharset, getter_AddRefs(encoder));
+  else
+    rv = ccm->GetUnicodeEncoder(aCharset, getter_AddRefs(encoder));
+  NS_ENSURE_SUCCESS(rv, rv);
+  // Must set behavior to kOnError_Signal if we want to receive the
+  // NS_ERROR_UENC_NOMAPPING signal, should it occur.
+  int32_t behavior = aReportUencNoMapping ? nsIUnicodeEncoder::kOnError_Signal:
+    nsIUnicodeEncoder::kOnError_Replace;
+  rv = encoder->SetOutputErrorBehavior(behavior, nullptr, '?');
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  const char16_t *originalSrcPtr = inString.get();
+  const char16_t *currentSrcPtr = originalSrcPtr;
+  int32_t originalUnicharLength = inString.Length();
+  int32_t srcLength;
+  int32_t dstLength;
+  char localbuf[512+10]; // We have seen cases were the buffer was overrun
+                         // by two (!!) bytes (Bug 1255863).
+                         // So give it ten bytes more for now to avoid a crash.
+  int32_t consumedLen = 0;
+
+  bool mappingFailure = false;
+  outString.Truncate();
+  // convert
+  while (consumedLen < originalUnicharLength) {
+    srcLength = originalUnicharLength - consumedLen;  
+    dstLength = 512;
+    rv = encoder->Convert(currentSrcPtr, &srcLength, localbuf, &dstLength);
+#ifdef DEBUG
+    if (dstLength > 512) {
+      char warning[100];
+      sprintf(warning, "encoder->Convert() returned %d bytes. Limit = 512", dstLength);
+      NS_WARNING(warning);
+    }
+#endif
+    if (rv == NS_ERROR_UENC_NOMAPPING) {
+      mappingFailure = true;
+    }
+    if (NS_FAILED(rv) || dstLength == 0)
+      break;
+    outString.Append(localbuf, dstLength);
+
+    currentSrcPtr += srcLength;
+    consumedLen = currentSrcPtr - originalSrcPtr; // src length used so far
+  }
+  dstLength = 512; // Reset available buffer size.
+  rv = encoder->Finish(localbuf, &dstLength);
+  if (NS_SUCCEEDED(rv)) {
+    if (dstLength)
+      outString.Append(localbuf, dstLength);
+    return !mappingFailure ? rv: NS_ERROR_UENC_NOMAPPING;
+  }
+  return rv;
+}
+
+nsresult nsMsgI18NConvertToUnicode(const char* aCharset,
+                                   const nsCString& inString, 
+                                   nsAString& outString,
+                                   bool aIsCharsetCanonical)
+{
+  if (inString.IsEmpty()) {
+    outString.Truncate();
+    return NS_OK;
+  }
+  else if (!*aCharset || !PL_strcasecmp(aCharset, "us-ascii") ||
+           !PL_strcasecmp(aCharset, "ISO-8859-1")) {
+    // Despite its name, it also works for Latin-1.
+    CopyASCIItoUTF16(inString, outString);
+    return NS_OK;
+  }
+  else if (!PL_strcasecmp(aCharset, "UTF-8")) {
+    if (MsgIsUTF8(inString)) {
+      nsAutoString tmp;
+      CopyUTF8toUTF16(inString, tmp);
+      if (!tmp.IsEmpty() && tmp.First() == char16_t(0xFEFF))
+        tmp.Cut(0, 1);
+      outString.Assign(tmp);
+      return NS_OK;
+    }
+    NS_WARNING("Invalid UTF-8 string");
+    return NS_ERROR_UNEXPECTED;
+  }
+
+  nsresult rv;
+  nsCOMPtr <nsICharsetConverterManager> ccm = do_GetService(NS_CHARSETCONVERTERMANAGER_CONTRACTID, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsCOMPtr <nsIUnicodeDecoder> decoder;
+
+  // get an unicode converter
+  if (aIsCharsetCanonical)  // optimize for modified UTF-7 used by IMAP
+    rv = ccm->GetUnicodeDecoderRaw(aCharset, getter_AddRefs(decoder));
+  else
+    rv = ccm->GetUnicodeDecoderInternal(aCharset, getter_AddRefs(decoder));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  const char *originalSrcPtr = inString.get();
+  const char *currentSrcPtr = originalSrcPtr;
+  int32_t originalLength = inString.Length();
+  int32_t srcLength;
+  int32_t dstLength;
+  char16_t localbuf[512];
+  int32_t consumedLen = 0;
+
+  outString.Truncate();
+
+  // convert
+  while (consumedLen < originalLength) {
+    srcLength = originalLength - consumedLen;  
+    dstLength = 512;
+    rv = decoder->Convert(currentSrcPtr, &srcLength, localbuf, &dstLength);
+    if (NS_FAILED(rv) || dstLength == 0)
+      break;
+    outString.Append(localbuf, dstLength);
+
+    currentSrcPtr += srcLength;
+    consumedLen = currentSrcPtr - originalSrcPtr; // src length used so far
+  }
+  return rv;
+}
+
+// Charset used by the file system.
+const char * nsMsgI18NFileSystemCharset()
+{
+  /* Get a charset used for the file. */
+  static nsAutoCString fileSystemCharset;
+
+  if (fileSystemCharset.IsEmpty()) 
+  {
+    nsresult rv;
+    nsCOMPtr <nsIPlatformCharset> platformCharset = do_GetService(NS_PLATFORMCHARSET_CONTRACTID, &rv);
+        if (NS_SUCCEEDED(rv)) {
+          rv = platformCharset->GetCharset(kPlatformCharsetSel_FileName,
+                                           fileSystemCharset);
+        }
+
+    if (NS_FAILED(rv)) 
+      fileSystemCharset.Assign("ISO-8859-1");
+  }
+  return fileSystemCharset.get();
+}
+
+// Charset used by the text file.
+void nsMsgI18NTextFileCharset(nsACString& aCharset)
+{
+  nsresult rv;
+  nsCOMPtr <nsIPlatformCharset> platformCharset =
+    do_GetService(NS_PLATFORMCHARSET_CONTRACTID, &rv);
+  if (NS_SUCCEEDED(rv)) {
+    rv = platformCharset->GetCharset(kPlatformCharsetSel_PlainTextInFile,
+                                     aCharset);
+  }
+
+  if (NS_FAILED(rv))
+    aCharset.Assign("ISO-8859-1");
+}
+
+// MIME encoder, output string should be freed by PR_FREE
+// XXX : fix callers later to avoid allocation and copy
+char * nsMsgI18NEncodeMimePartIIStr(const char *header, bool structured, const char *charset, int32_t fieldnamelen, bool usemime) 
+{
+  // No MIME, convert to the outgoing mail charset.
+  if (false == usemime) {
+    nsAutoCString convertedStr;
+    if (NS_SUCCEEDED(ConvertFromUnicode(charset, NS_ConvertUTF8toUTF16(header),
+                                        convertedStr)))
+      return PL_strdup(convertedStr.get());
+    else
+      return PL_strdup(header);
+  }
+
+  nsAutoCString encodedString;
+  nsresult res;
+  nsCOMPtr<nsIMimeConverter> converter = do_GetService(NS_MIME_CONVERTER_CONTRACTID, &res);
+  if (NS_SUCCEEDED(res) && nullptr != converter)
+    res = converter->EncodeMimePartIIStr_UTF8(nsDependentCString(header),
+      structured, "UTF-8", fieldnamelen,
+      nsIMimeConverter::MIME_ENCODED_WORD_SIZE, encodedString);
+
+  return NS_SUCCEEDED(res) ? PL_strdup(encodedString.get()) : nullptr;
+}
+
+// Return True if a charset is stateful (e.g. JIS).
+bool nsMsgI18Nstateful_charset(const char *charset)
+{
+  //TODO: use charset manager's service
+  return (PL_strcasecmp(charset, "ISO-2022-JP") == 0);
+}
+
+bool nsMsgI18Nmultibyte_charset(const char *charset)
+{
+  nsresult res;
+  nsCOMPtr <nsICharsetConverterManager> ccm = do_GetService(NS_CHARSETCONVERTERMANAGER_CONTRACTID, &res);
+  bool result = false;
+
+  if (NS_SUCCEEDED(res)) {
+    nsAutoString charsetData;
+    res = ccm->GetCharsetData(charset, u".isMultibyte", charsetData);
+    if (NS_SUCCEEDED(res)) {
+      result = charsetData.LowerCaseEqualsLiteral("true");
+    }
+  }
+
+  return result;
+}
+
+bool nsMsgI18Ncheck_data_in_charset_range(const char *charset, const char16_t* inString, char **fallbackCharset)
+{
+  if (!charset || !*charset || !inString || !*inString)
+    return true;
+
+  nsresult res;
+  bool result = true;
+  
+  nsCOMPtr <nsICharsetConverterManager> ccm = do_GetService(NS_CHARSETCONVERTERMANAGER_CONTRACTID, &res);
+
+  if (NS_SUCCEEDED(res)) {
+    nsCOMPtr <nsIUnicodeEncoder> encoder;
+
+    // get an unicode converter
+    res = ccm->GetUnicodeEncoderRaw(charset, getter_AddRefs(encoder));
+    if(NS_SUCCEEDED(res)) {
+      const char16_t *originalPtr = inString;
+      int32_t originalLen = NS_strlen(inString);
+      const char16_t *currentSrcPtr = originalPtr;
+      char localBuff[512];
+      int32_t consumedLen = 0;
+      int32_t srcLen;
+      int32_t dstLength;
+
+      // convert from unicode
+      while (consumedLen < originalLen) {
+        srcLen = originalLen - consumedLen;
+        dstLength = 512;
+        res = encoder->Convert(currentSrcPtr, &srcLen, localBuff, &dstLength);
+        if (NS_ERROR_UENC_NOMAPPING == res) {
+          result = false;
+          break;
+        }
+        else if (NS_FAILED(res) || (0 == dstLength))
+          break;
+
+        currentSrcPtr += srcLen;
+        consumedLen = currentSrcPtr - originalPtr; // src length used so far
+      }
+    }    
+  }
+
+  // if the conversion was not successful then try fallback to other charsets
+  if (!result && fallbackCharset) {
+    nsCString convertedString;
+    res = nsMsgI18NConvertFromUnicode(*fallbackCharset,
+      nsDependentString(inString), convertedString, false, true);
+    result = (NS_SUCCEEDED(res) && NS_ERROR_UENC_NOMAPPING != res);
+  }
+
+  return result;
+}
+
+// Simple parser to parse META charset. 
+// It only supports the case when the description is within one line. 
+const char * 
+nsMsgI18NParseMetaCharset(nsIFile* file) 
+{ 
+  static char charset[nsIMimeConverter::MAX_CHARSET_NAME_LENGTH+1];
+
+  *charset = '\0'; 
+
+  bool isDirectory = false;
+  file->IsDirectory(&isDirectory);
+  if (isDirectory) {
+    NS_ERROR("file is a directory");
+    return charset; 
+  }
+
+  nsresult rv;
+  nsCOMPtr <nsIFileInputStream> fileStream = do_CreateInstance(NS_LOCALFILEINPUTSTREAM_CONTRACTID, &rv);
+  NS_ENSURE_SUCCESS(rv, charset);
+  
+  rv = fileStream->Init(file, PR_RDONLY, 0664, false);
+  nsCOMPtr <nsILineInputStream> lineStream = do_QueryInterface(fileStream, &rv);
+
+  nsCString curLine;
+  bool more = true;
+  while (NS_SUCCEEDED(rv) && more) { 
+    rv = lineStream->ReadLine(curLine, &more); 
+    if (curLine.IsEmpty()) 
+      continue; 
+
+    ToUpperCase(curLine);
+
+    if (curLine.Find("/HEAD") != -1) 
+      break; 
+
+    if (curLine.Find("META") != -1 && 
+       curLine.Find("HTTP-EQUIV") != -1 && 
+        curLine.Find("CONTENT-TYPE") != -1 && 
+       curLine.Find("CHARSET") != -1) { 
+      char *cp = (char *) PL_strchr(PL_strstr(curLine.get(), "CHARSET"), '=');
+      char *token = nullptr;
+      if (cp)
+      {
+        char *newStr = cp + 1;
+        token = NS_strtok(" \"\'", &newStr);
+      }
+      if (token) { 
+        PL_strncpy(charset, token, sizeof(charset));
+        charset[sizeof(charset)-1] = '\0';
+
+        // this function cannot parse a file if it is really
+        // encoded by one of the following charsets
+        // so we can say that the charset label must be incorrect for
+        // the .html if we actually see those charsets parsed
+        // and we should ignore them
+        if (!PL_strncasecmp("UTF-16", charset, sizeof("UTF-16")-1) || 
+            !PL_strncasecmp("UTF-32", charset, sizeof("UTF-32")-1))
+          charset[0] = '\0';
+
+        break;
+      } 
+    } 
+  } 
+
+  return charset; 
+}
+
+nsresult nsMsgI18NShrinkUTF8Str(const nsCString &inString,
+                                uint32_t aMaxLength,
+                                nsACString &outString)
+{
+  if (inString.IsEmpty()) {
+    outString.Truncate();
+    return NS_OK;
+  }
+  if (inString.Length() < aMaxLength) {
+    outString.Assign(inString);
+    return NS_OK;
+  }
+  NS_ASSERTION(MsgIsUTF8(inString), "Invalid UTF-8 string is inputted");
+  const char* start = inString.get();
+  const char* end = start + inString.Length();
+  const char* last = start + aMaxLength;
+  const char* cur = start;
+  const char* prev = nullptr;
+  bool err = false;
+  while (cur < last) {
+    prev = cur;
+    if (!UTF8CharEnumerator::NextChar(&cur, end, &err) || err)
+      break;
+  }
+  if (!prev || err) {
+    outString.Truncate();
+    return NS_OK;
+  }
+  uint32_t len = prev - start;
+  outString.Assign(Substring(inString, 0, len));
+  return NS_OK;
+}
+
+void nsMsgI18NConvertRawBytesToUTF16(const nsCString& inString, 
+                                     const char* charset,
+                                     nsAString& outString)
+{
+  if (MsgIsUTF8(inString))
+  {
+    CopyUTF8toUTF16(inString, outString);
+    return;
+  }
+
+  nsresult rv = ConvertToUnicode(charset, inString, outString);
+  if (NS_SUCCEEDED(rv))
+    return;
+
+  const char* cur = inString.BeginReading();
+  const char* end = inString.EndReading();
+  outString.Truncate();
+  while (cur < end) {
+    char c = *cur++;
+    if (c & char(0x80))
+      outString.Append(UCS2_REPLACEMENT_CHAR);
+    else
+      outString.Append(c);
+  }
+}
+
+void nsMsgI18NConvertRawBytesToUTF8(const nsCString& inString, 
+                                    const char* charset,
+                                    nsACString& outString)
+{
+  if (MsgIsUTF8(inString))
+  {
+    outString.Assign(inString);
+    return;
+  }
+
+  nsAutoString utf16Text;
+  nsresult rv = ConvertToUnicode(charset, inString, utf16Text);
+  if (NS_SUCCEEDED(rv))
+  {
+    CopyUTF16toUTF8(utf16Text, outString);
+    return;
+  }
+
+  // EF BF BD (UTF-8 encoding of U+FFFD)
+  NS_NAMED_LITERAL_CSTRING(utf8ReplacementChar, "\357\277\275");
+  const char* cur = inString.BeginReading();
+  const char* end = inString.EndReading();
+  outString.Truncate();
+  while (cur < end) {
+    char c = *cur++;
+    if (c & char(0x80))
+      outString.Append(utf8ReplacementChar);
+    else
+      outString.Append(c);
+  }
+}