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

1 files changed, 779 insertions, 0 deletions

diff --git a/mailnews/compose/src/nsMsgSendPart.cpp b/mailnews/compose/src/nsMsgSendPart.cpp
new file mode 100644
index 000000000..a33dabf33
--- /dev/null
+++ b/mailnews/compose/src/nsMsgSendPart.cpp
@@ -0,0 +1,779 @@
+/* -*- Mode: C++; tab-width: 2; 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/. */
+#include "nsMsgLocalFolderHdrs.h"
+#include "nsMsgSend.h"
+#include "nsMsgSendPart.h"
+#include "nsIMimeConverter.h"
+#include "nsCOMPtr.h"
+#include "nsIComponentManager.h"
+#include "nsMsgI18N.h"
+#include "nsMsgCompUtils.h"
+#include "nsMsgMimeCID.h"
+#include "nsMimeTypes.h"
+#include "prmem.h"
+#include "nsMsgPrompts.h"
+#include "nsNativeCharsetUtils.h"
+#include "nsNetUtil.h"
+#include "nsISeekableStream.h"
+#include "nsReadLine.h"
+#include "nsILineInputStream.h"
+#include "nsComposeStrings.h"
+#include "mozilla/mailnews/MimeEncoder.h"
+
+static char *mime_mailto_stream_read_buffer = 0;
+
+int32_t nsMsgSendPart::M_counter = 0;
+
+nsMsgSendPart::nsMsgSendPart(nsIMsgSend* state, const char *part_charset)
+{
+  PL_strncpy(m_charset_name, (part_charset ? part_charset : "UTF-8"), sizeof(m_charset_name)-1);
+  m_charset_name[sizeof(m_charset_name)-1] = '\0';
+  m_children = nullptr;
+  m_numchildren = 0;
+  // if we're not added as a child, the default part number will be "1".
+  m_partNum = "1";
+  SetMimeDeliveryState(state);
+
+  m_parent = nullptr;
+  m_buffer = nullptr;
+  m_type = nullptr;
+  m_other = nullptr;
+  m_strip_sensitive_headers = false;
+  
+  m_firstBlock = false;
+  m_needIntlConversion = false;
+  
+  m_mainpart = false;
+  m_just_hit_CR = false;
+}
+
+
+nsMsgSendPart::~nsMsgSendPart()
+{
+  for (int i=0 ; i < m_numchildren; i++)
+    delete m_children[i];
+
+  delete [] m_children;
+    PR_FREEIF(m_buffer);
+  PR_FREEIF(m_other);
+  PR_FREEIF(m_type);
+}
+
+nsresult nsMsgSendPart::CopyString(char** dest, const char* src)
+{
+  NS_ASSERTION(src, "src null");
+  
+  PR_FREEIF(*dest);
+  if (!src)
+    *dest = PL_strdup("");
+  else
+    *dest = PL_strdup(src);
+  
+  return *dest? NS_OK : NS_ERROR_OUT_OF_MEMORY;
+}
+
+
+nsresult nsMsgSendPart::SetFile(nsIFile *file)
+{
+  m_file = file;
+  return NS_OK;
+}
+
+
+nsresult nsMsgSendPart::SetBuffer(const char* buffer)
+{
+  PR_FREEIF(m_buffer);
+  return CopyString(&m_buffer, buffer);
+}
+
+
+nsresult nsMsgSendPart::SetType(const char* type)
+{
+  PR_FREEIF(m_type);
+  m_type = PL_strdup(type);
+  return m_type ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
+}
+
+
+nsresult nsMsgSendPart::SetOtherHeaders(const char* other)
+{
+  return CopyString(&m_other, other);
+}
+
+nsresult nsMsgSendPart::SetMimeDeliveryState(nsIMsgSend *state)
+{
+  m_state = state;
+  if (GetNumChildren() > 0)
+  {
+    for (int i = 0; i < GetNumChildren(); i++)
+    {
+      nsMsgSendPart *part = GetChild(i);
+      if (part) 
+        part->SetMimeDeliveryState(state);
+    }
+  }
+  return NS_OK;
+}
+
+nsresult nsMsgSendPart::AppendOtherHeaders(const char* more)
+{
+  if (!m_other)
+    return SetOtherHeaders(more);
+
+  if (!more || !*more)
+    return NS_OK;
+
+  char* tmp = (char *) PR_Malloc(sizeof(char) * (PL_strlen(m_other) + PL_strlen(more) + 2));
+  if (!tmp)
+    return NS_ERROR_OUT_OF_MEMORY;
+
+  PL_strcpy(tmp, m_other);
+  PL_strcat(tmp, more);
+  PR_FREEIF(m_other);
+  m_other = tmp;
+
+  return NS_OK;
+}
+
+
+nsresult nsMsgSendPart::SetMainPart(bool value)
+{
+  m_mainpart = value;
+  return NS_OK;
+}
+
+nsresult nsMsgSendPart::AddChild(nsMsgSendPart* child)
+{
+  m_numchildren++;
+  nsMsgSendPart** tmp = new nsMsgSendPart* [m_numchildren];
+  if (tmp == nullptr) return NS_ERROR_OUT_OF_MEMORY;
+  for (int i=0 ; i<m_numchildren-1 ; i++) {
+    tmp[i] = m_children[i];
+  }
+  delete [] m_children;
+  m_children = tmp;
+  m_children[m_numchildren - 1] = child;
+  child->m_parent = this;
+  nsCString partNum(m_partNum);
+  partNum.Append(".");
+  partNum.AppendInt(m_numchildren);
+  child->m_partNum = partNum;
+  return NS_OK;
+}
+
+nsMsgSendPart * nsMsgSendPart::DetachChild(int32_t whichOne)
+{
+  nsMsgSendPart *returnValue = nullptr;
+  
+  NS_ASSERTION(whichOne >= 0 && whichOne < m_numchildren, "parameter out of range");
+  if (whichOne >= 0 && whichOne < m_numchildren) 
+  {
+    returnValue = m_children[whichOne];
+    
+    if (m_numchildren > 1)
+    {
+      nsMsgSendPart** tmp = new nsMsgSendPart* [m_numchildren-1];
+      if (tmp != nullptr) 
+      {
+        // move all the other kids over
+        for (int i=0 ; i<m_numchildren-1 ; i++) 
+        {
+          if (i >= whichOne)
+            tmp[i] = m_children[i+1];
+          else
+            tmp[i] = m_children[i];
+        }
+        delete [] m_children;
+        m_children = tmp;
+        m_numchildren--;
+      }
+    }
+    else 
+    {
+      delete [] m_children;
+      m_children = nullptr;
+      m_numchildren = 0;
+    }
+  }
+  
+  if (returnValue)
+    returnValue->m_parent = nullptr;
+  
+  return returnValue;
+}
+
+nsMsgSendPart* nsMsgSendPart::GetChild(int32_t which)
+{
+  NS_ASSERTION(which >= 0 && which < m_numchildren, "parameter out of range");
+  if (which >= 0 && which < m_numchildren) {
+    return m_children[which];
+  }
+  return nullptr;
+}
+
+
+
+nsresult nsMsgSendPart::PushBody(const char* buffer, int32_t length)
+{
+  nsresult status = NS_OK;
+  const char* encoded_data = buffer;
+
+  if (m_encoder)
+  {
+    status = m_encoder->Write(encoded_data, length);
+  }
+  else
+  {
+    // Merely translate all linebreaks to CRLF.
+    const char *in = encoded_data;
+    const char *end = in + length;
+    char *buffer, *out;
+
+
+    buffer = mime_get_stream_write_buffer();
+    // XXX -1 is not a valid nsresult
+    NS_ENSURE_TRUE(buffer, static_cast<nsresult>(-1));
+
+    NS_ASSERTION(encoded_data != buffer, "encoded_data == buffer");
+    out = buffer;
+
+    for (; in < end; in++) {
+      if (m_just_hit_CR) {
+        m_just_hit_CR = false;
+        if (*in == '\n') {
+          // The last thing we wrote was a CRLF from hitting a CR.
+          // So, we don't want to do anything from a following LF;
+          // we want to ignore it.
+          continue;
+        }
+      }
+      if (*in == '\r' || *in == '\n') {
+        /* Write out the newline. */
+        *out++ = '\r';
+        *out++ = '\n';
+        
+        status = mime_write_message_body(m_state, buffer,
+          out - buffer);
+        if (NS_FAILED(status)) return status;
+        out = buffer;
+        
+        if (*in == '\r') {
+          m_just_hit_CR = true;
+        }
+        
+        out = buffer;
+      } else {
+        
+      /*  Fix for bug #95985. We can't assume that all lines are shorter
+      than 4096 chars (MIME_BUFFER_SIZE), so we need to test
+      for this here. sfraser.
+        */
+        if (out - buffer >= MIME_BUFFER_SIZE)
+        {
+          status = mime_write_message_body(m_state, buffer, out - buffer);
+          if (NS_FAILED(status)) return status;
+          
+          out = buffer;
+        }
+        
+        *out++ = *in;
+      }
+    }
+    
+    /* Flush the last line. */
+    if (out > buffer) {
+      status = mime_write_message_body(m_state, buffer, out - buffer);
+      if (NS_FAILED(status)) return status;
+      out = buffer;
+    }
+  }
+  
+  if (encoded_data && encoded_data != buffer) {
+    PR_Free((char *) encoded_data);
+  }
+  
+  return status;
+}
+
+
+/* Partition the headers into those which apply to the message as a whole;
+those which apply to the message's contents; and the Content-Type header
+itself.  (This relies on the fact that all body-related headers begin with
+"Content-".)
+
+  (How many header parsers are in this program now?)
+  */
+static nsresult
+divide_content_headers(const char *headers,
+                        char **message_headers,
+                        char **content_headers,
+                        char **content_type_header)
+{
+    const char *tail;
+    char *message_tail, *content_tail, *type_tail;
+    int L = 0;
+    if (headers)
+      L = PL_strlen(headers);
+    
+    if (L == 0)
+      return NS_OK;
+    
+    *message_headers = (char *)PR_Malloc(L+1);
+    if (!*message_headers)
+      return NS_ERROR_OUT_OF_MEMORY;
+    
+    *content_headers = (char *)PR_Malloc(L+1);
+    if (!*content_headers) {
+      PR_Free(*message_headers);
+      return NS_ERROR_OUT_OF_MEMORY;
+    }
+    
+    *content_type_header = (char *)PR_Malloc(L+1);
+    if (!*content_type_header) {
+      PR_Free(*message_headers);
+      PR_Free(*content_headers);
+      return NS_ERROR_OUT_OF_MEMORY;
+    }
+    
+    message_tail = *message_headers;
+    content_tail = *content_headers;
+    type_tail    = *content_type_header;
+    tail = headers;
+    
+    while (*tail)
+    {
+      const char *head = tail;
+      char **out;
+      while(true) {
+      /* Loop until we reach a newline that is not followed by whitespace.
+        */
+        if (tail[0] == 0 ||
+          ((tail[0] == '\r' || tail[0] == '\n') &&
+          !(tail[1] == ' ' || tail[1] == '\t' || tail[1] == '\n')))
+        {
+          /* Swallow the whole newline. */
+          if (tail[0] == '\r' && tail[1] == '\n')
+            tail++;
+          if (*tail)
+            tail++;
+          break;
+        }
+        tail++;
+      }
+      
+      /* Decide which block this header goes into.
+      */
+      if (!PL_strncasecmp(head, "Content-Type:", 13))
+        out = &type_tail;
+      else
+        if (!PL_strncasecmp(head, "Content-", 8))
+          out = &content_tail;
+        else
+          out = &message_tail;
+        
+        memcpy(*out, head, (tail-head));
+        *out += (tail-head);
+    }
+    
+    *message_tail = 0;
+    *content_tail = 0;
+    *type_tail = 0;
+    
+    if (!**message_headers) {
+      PR_Free(*message_headers);
+      *message_headers = 0;
+    }
+    
+    if (!**content_headers) {
+      PR_Free(*content_headers);
+      *content_headers = 0;
+    }
+    
+    if (!**content_type_header) {
+      PR_Free(*content_type_header);
+      *content_type_header = 0;
+    }
+    
+#ifdef DEBUG
+    // ### mwelch Because of the extreme difficulty we've had with
+    //      duplicate part headers, I'm going to put in an
+    //      ASSERT here which makes sure that no duplicate
+    //      Content-Type or Content-Transfer-Encoding headers
+    //      leave here undetected.
+    const char* tmp;
+    if (*content_type_header) {
+      tmp = PL_strstr(*content_type_header, "Content-Type");
+      if (tmp) {
+        tmp++; // get past the first occurrence
+        NS_ASSERTION(!PL_strstr(tmp, "Content-Type"), "Content-part already present");
+      }
+    }
+    
+    if (*content_headers) {
+      tmp = PL_strstr(*content_headers, "Content-Transfer-Encoding");
+      if (tmp) {
+        tmp++; // get past the first occurrence
+        NS_ASSERTION(!PL_strstr(tmp, "Content-Transfer-Encoding"), "Content-Transfert already present");
+      }
+    }
+#endif // DEBUG
+    
+    return NS_OK;
+}
+
+#define     SKIP_EMPTY_PART   1966
+
+nsresult
+nsMsgSendPart::Write()
+{
+  nsresult status = NS_OK;
+  char    *separator = nullptr;
+  bool    needToWriteCRLFAfterEncodedBody  = false;
+
+#define PUSHLEN(str, length)                  \
+  do {                            \
+    status = mime_write_message_body(m_state, str, length); \
+    if (NS_FAILED(status)) goto FAIL;                \
+  } while (0)                         \
+
+#define PUSH(str) PUSHLEN(str, PL_strlen(str))
+
+  // rhp: Suppress the output of parts that are empty!
+  if ( (m_parent) &&
+       (m_numchildren == 0) &&
+       ( (!m_buffer) || (!*m_buffer) ) &&
+       (!m_file) &&
+       (!m_mainpart) )
+    // XXX SKIP_EMPTY_PART (= 1966) is not a valid nsresult
+    return static_cast<nsresult>(SKIP_EMPTY_PART);
+
+  if (m_mainpart && m_type && PL_strcmp(m_type, TEXT_HTML) == 0) 
+  {     
+    if (m_file) 
+    {
+      // The "insert HTML links" code requires a memory buffer,
+      // so read the file into memory.
+      NS_ASSERTION(m_buffer == nullptr, "not-null buffer");
+      int32_t           length = 0;
+      int64_t fileSize;
+      if (NS_SUCCEEDED(m_file->GetFileSize(&fileSize)))
+          length = fileSize;
+      
+      m_buffer = (char *) PR_Malloc(sizeof(char) * (length + 1));
+      if (m_buffer) 
+      {
+        nsCOMPtr<nsIInputStream> inputFile;
+        nsresult rv = NS_NewLocalFileInputStream(getter_AddRefs(inputFile), m_file);
+        if (NS_SUCCEEDED(rv)) 
+        {
+          uint32_t bytesRead;
+          rv = inputFile->Read(m_buffer, length, &bytesRead);
+          inputFile->Close();
+          m_buffer[length] = '\0';
+        }
+        else 
+          PR_Free(m_buffer);
+      }
+    }
+  }
+  
+  if (m_parent && m_parent->m_type &&
+        !PL_strcasecmp(m_parent->m_type, MULTIPART_DIGEST) &&
+        m_type &&
+        (!PL_strcasecmp(m_type, MESSAGE_RFC822) ||
+        !PL_strcasecmp(m_type, MESSAGE_NEWS))) 
+  {
+    // If we're in a multipart/digest, and this document is of type
+    // message/rfc822, then it's appropriate to emit no headers.
+    //
+  }
+  else 
+  {
+    char *message_headers = 0;
+    char *content_headers = 0;
+    char *content_type_header = 0;
+    status = divide_content_headers(m_other,
+                                    &message_headers,
+                                    &content_headers,
+                                    &content_type_header);
+    if (NS_FAILED(status))
+      goto FAIL;
+    
+      /* First, write out all of the headers that refer to the message
+      itself (From, Subject, MIME-Version, etc.)
+    */
+    if (message_headers) 
+    {
+      PUSH(message_headers);
+      PR_Free(message_headers);
+      message_headers = 0;
+    }
+
+    /* Now allow the crypto library to (potentially) insert some text
+       (it may want to wrap the body in an envelope.)           */
+    if (!m_parent) {
+      status = m_state->BeginCryptoEncapsulation();
+      if (NS_FAILED(status)) goto FAIL;
+    }
+          
+    /* Now make sure there's a Content-Type header.
+    */
+    if (!content_type_header) 
+    {
+      NS_ASSERTION(m_type && *m_type, "null ptr");
+      bool needsCharset = mime_type_needs_charset(m_type ? m_type : TEXT_PLAIN);
+      if (needsCharset) 
+      {
+        content_type_header = PR_smprintf("Content-Type: %s; charset=%s" CRLF,
+                                          (m_type ? m_type : TEXT_PLAIN), m_charset_name);
+      }
+      else
+        content_type_header = PR_smprintf("Content-Type: %s" CRLF,
+                                          (m_type ? m_type : TEXT_PLAIN));
+      if (!content_type_header) 
+      {
+        if (content_headers)
+          PR_Free(content_headers);
+        status = NS_ERROR_OUT_OF_MEMORY;
+        goto FAIL;
+      }
+    }
+    
+    /* If this is a compound object, tack a boundary string onto the
+    Content-Type header. this
+    */
+    if (m_numchildren > 0)
+    {
+      int L;
+      char *ct2;
+      NS_ASSERTION(m_type, "null ptr");
+
+      if (!separator)
+      {
+        separator = mime_make_separator("");
+        if (!separator)
+        {
+          status = NS_ERROR_OUT_OF_MEMORY;
+          goto FAIL;
+        }
+      }
+
+      L = PL_strlen(content_type_header);
+      
+      if (content_type_header[L-1] == '\n')
+        content_type_header[--L] = 0;
+      if (content_type_header[L-1] == '\r')
+        content_type_header[--L] = 0;
+      
+      ct2 = PR_smprintf("%s;\r\n boundary=\"%s\"" CRLF, content_type_header, separator);
+      PR_Free(content_type_header);
+      if (!ct2) 
+      {
+        if (content_headers)
+          PR_Free(content_headers);
+        status = NS_ERROR_OUT_OF_MEMORY;
+        goto FAIL;
+      }
+      
+      content_type_header = ct2;
+    }
+    
+    // Now write out the Content-Type header...
+    NS_ASSERTION(content_type_header && *content_type_header, "null ptr");
+    PUSH(content_type_header);
+    PR_Free(content_type_header);
+    content_type_header = 0;
+    
+    /* ...followed by all of the other headers that refer to the body of
+    the message (Content-Transfer-Encoding, Content-Dispositon, etc.)
+    */
+    if (content_headers) 
+    {
+      PUSH(content_headers);
+      PR_Free(content_headers);
+      content_headers = 0;
+    }
+  }
+
+  PUSH(CRLF);         // A blank line, to mark the end of headers.
+
+  m_firstBlock = true;
+  /* only convert if we need to tag charset */
+  m_needIntlConversion = mime_type_needs_charset(m_type);
+  
+  if (m_buffer) 
+  {
+    status = PushBody(m_buffer, PL_strlen(m_buffer));
+    if (NS_FAILED(status))
+      goto FAIL;
+  }
+  else if (m_file) 
+  {
+    nsCOMPtr<nsIInputStream> inputStream;
+    nsresult rv = NS_NewLocalFileInputStream(getter_AddRefs(inputStream), m_file);
+    if (NS_FAILED(rv))
+    {
+      // mysteriously disappearing?
+      nsCOMPtr<nsIMsgSendReport> sendReport;
+      m_state->GetSendReport(getter_AddRefs(sendReport));
+      if (sendReport)
+      {
+        nsAutoString error_msg;
+        nsMsgBuildMessageWithTmpFile(m_file, error_msg);
+        sendReport->SetMessage(nsIMsgSendReport::process_Current, error_msg.get(), false);
+      }
+      status = NS_MSG_UNABLE_TO_OPEN_TMP_FILE;
+      goto FAIL;
+    }
+
+    nsCString curLine;
+    bool more = true;
+
+    /* Kludge to avoid having to allocate memory on the toy computers... */
+    if (!mime_mailto_stream_read_buffer) 
+    {
+      mime_mailto_stream_read_buffer = (char *) PR_Malloc(MIME_BUFFER_SIZE);
+      if (!mime_mailto_stream_read_buffer) 
+      {
+        status = NS_ERROR_OUT_OF_MEMORY;
+        goto FAIL;
+      }
+    }
+
+    char    *buffer = mime_mailto_stream_read_buffer;
+    if (m_strip_sensitive_headers) 
+    {
+      // We are attaching a message, so we should be careful to
+      // strip out certain sensitive internal header fields.
+      bool skipping = false;
+      nsAutoPtr<nsLineBuffer<char> > lineBuffer(new nsLineBuffer<char>);
+      NS_ENSURE_TRUE(lineBuffer, NS_ERROR_OUT_OF_MEMORY);
+
+      while (more)
+      {
+        // NS_ReadLine doesn't return line termination chars.
+        rv = NS_ReadLine(inputStream.get(), lineBuffer.get(), curLine, &more);
+
+        curLine.Append(CRLF);
+
+        char *line = (char *) curLine.get();
+        if (skipping) {
+          if (*line == ' ' || *line == '\t')
+            continue;
+          else
+            skipping = false;
+        }
+                
+        if (!PL_strncasecmp(line, "From -", 6) ||
+            !PL_strncasecmp(line, "BCC:", 4) ||
+            !PL_strncasecmp(line, "FCC:", 4) ||
+            !PL_strncasecmp(line, CONTENT_LENGTH ":", CONTENT_LENGTH_LEN+1) ||
+            !PL_strncasecmp(line, "Lines:", 6) ||
+            !PL_strncasecmp(line, "Status:", 7) ||
+            !PL_strncasecmp(line, X_MOZILLA_STATUS ":", X_MOZILLA_STATUS_LEN+1) ||
+            !PL_strncasecmp(line, X_MOZILLA_STATUS2 ":", X_MOZILLA_STATUS2_LEN+1) ||
+            !PL_strncasecmp(line, X_MOZILLA_DRAFT_INFO ":", X_MOZILLA_DRAFT_INFO_LEN+1) ||
+            !PL_strncasecmp(line, X_MOZILLA_NEWSHOST ":", X_MOZILLA_NEWSHOST_LEN+1) ||
+            !PL_strncasecmp(line, X_UIDL ":", X_UIDL_LEN+1) ||
+            !PL_strncasecmp(line, "X-VM-", 5)) /* hi Kyle */
+        {
+          skipping = true;
+          continue;
+        }
+        
+        PUSH(line);
+        
+        if (curLine.Length() == 2) {
+          nsCOMPtr <nsISeekableStream> seekableStream = do_QueryInterface(inputStream);
+          // seek back the amount of data left in the line buffer...
+          seekableStream->Seek(nsISeekableStream::NS_SEEK_CUR, lineBuffer->start - lineBuffer->end);
+          break;  // Now can do normal reads for the body.
+        }
+      }
+      lineBuffer = nullptr;
+    }
+
+    while (NS_SUCCEEDED(status))
+    {
+      uint32_t bytesRead;
+      nsresult rv = inputStream->Read(buffer, MIME_BUFFER_SIZE, &bytesRead);
+      if (NS_FAILED(rv))
+      {  
+        nsCOMPtr<nsIMsgSendReport> sendReport;
+        m_state->GetSendReport(getter_AddRefs(sendReport));
+        if (sendReport)
+        {
+          nsAutoString error_msg;
+          nsMsgBuildMessageWithFile(m_file, error_msg);
+          sendReport->SetMessage(nsIMsgSendReport::process_Current, error_msg.get(), false);
+          status = NS_MSG_UNABLE_TO_OPEN_FILE;
+          goto FAIL;
+        }
+      }
+      status = PushBody(buffer, bytesRead);
+      if (NS_FAILED(status))
+        goto FAIL;
+      if (bytesRead < MIME_BUFFER_SIZE)
+        break;
+    }
+  }
+
+  if (m_encoder)
+  {
+    nsresult rv = m_encoder->Flush();
+    m_encoder = nullptr;
+    needToWriteCRLFAfterEncodedBody = !m_parent;
+    if (NS_FAILED(rv))
+    {
+      // XXX -1 is not a valid nsresult
+      status = static_cast<nsresult>(-1);
+      goto FAIL;
+    }
+  }
+
+  //
+  // Ok, from here we loop and drive the the output of all children 
+  // for this message.
+  //
+  if (m_numchildren > 0) 
+  {
+    bool    writeSeparator = true;
+
+    for (int i = 0 ; i < m_numchildren ; i ++) 
+    {
+      if (writeSeparator)
+      {
+        PUSH(CRLF);
+        PUSH("--");
+
+        PUSH(separator);
+        PUSH(CRLF);
+      }
+
+      status = m_children[i]->Write();
+      if (NS_FAILED(status))
+        goto FAIL;
+
+      // XXX SKIP_EMPTY_PART (= 1966) is not a valid nsresult
+      if (status == static_cast<nsresult>(SKIP_EMPTY_PART))
+        writeSeparator = false;
+      else
+        writeSeparator = true;
+    }
+
+    PUSH(CRLF);
+    PUSH("--");
+    PUSH(separator);
+    PUSH("--");
+    PUSH(CRLF);
+  }
+  else if (needToWriteCRLFAfterEncodedBody)
+    PUSH(CRLF);
+
+FAIL:
+  PR_FREEIF(separator);
+  return status;
+}
+