mailnews/news/src/nsNewsUtils.cpp
author Joshua Cranmer <Pidgeot18@gmail.com>
Sat, 26 Nov 2011 21:54:33 -0600
changeset 9386 0146a1f973e2269d9781012ec4435ca0b8b4a7ea
parent 8508 8e5dde6eb30787e8f3f40ae1ec5d87c6a9430127
child 12286 84ac3c71109811da751f0ef2d72108075938f094
permissions -rw-r--r--
Bug 670935 - Fix handling of news URIs when group names contain `&' and other characters. r=bienvenu,a=Standard8

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#include "msgCore.h"
#include "nntpCore.h"
#include "nsNewsUtils.h"
#include "nsMsgUtils.h"


/* parses NewsMessageURI */
nsresult
nsParseNewsMessageURI(const char* uri, nsCString& group, PRUint32 *key)
{
  NS_ENSURE_ARG_POINTER(uri);
  NS_ENSURE_ARG_POINTER(key);

  nsCAutoString uriStr(uri);
  PRInt32 keySeparator = uriStr.FindChar('#');
  if(keySeparator != -1)
  {
    PRInt32 keyEndSeparator = MsgFindCharInSet(uriStr, "?&", keySeparator);

    // Grab between the last '/' and the '#' for the key
    group = StringHead(uriStr, keySeparator);
    PRInt32 groupSeparator = group.RFind("/");
    if (groupSeparator == -1)
      return NS_ERROR_FAILURE;

    // Our string APIs don't let us unescape into the same buffer from earlier,
    // so escape into a temporary
    nsCAutoString unescapedGroup;
    MsgUnescapeString(Substring(group, groupSeparator + 1), 0, unescapedGroup);
    group = unescapedGroup;

    nsCAutoString keyStr;
    if (keyEndSeparator != -1)
      keyStr = Substring(uriStr, keySeparator + 1, keyEndSeparator - (keySeparator + 1));
    else
      keyStr = Substring(uriStr, keySeparator + 1);
    nsresult errorCode;
    *key = keyStr.ToInteger(&errorCode);

    return errorCode;
  }
  return NS_ERROR_FAILURE;
}

nsresult nsCreateNewsBaseMessageURI(const char *baseURI, nsCString &baseMessageURI)
{
  nsCAutoString tailURI(baseURI);

  // chop off news:/
  if (tailURI.Find(kNewsRootURI) == 0)
    tailURI.Cut(0, PL_strlen(kNewsRootURI));

  baseMessageURI = kNewsMessageRootURI;
  baseMessageURI += tailURI;

  return NS_OK;
}