协调大组名称时崩溃
[英]Crashing on reconciliation of large group name
问题描述
I don't have very much knowledge of C++ and Lotus notes.
我不太了解 C++ 和 Lotus Notes。 I have piece of code which prints the group name in log.我有一段代码可以在日志中打印组名。
Util::AgentDebug("In Command::InitGroupMap(): Group Name = %s",lnGrpName.GetBuf());
lnGrpName is LNstring. lnGrpName 是 LNstring。 it is working fine but whenever group name length is more than 2200, then it crashes.它工作正常，但只要组名长度超过 2200，就会崩溃。
here is the example - suppose group name is这是示例 - 假设组名是
asd.Storage.Implementation;
is this issue because of LNString or GetBuf()?这个问题是因为 LNString 还是 GetBuf()？
AgentDebug method is below - AgentDebug 方法如下 -
void Util::AgentDebug( wchar_t * format , ... )
{
wchar_t tmp[2048];
va_list args;
char strBuff[4096];
int j = 0;
va_start(args, format);
vswprintf_s(tmp, format, args);
va_end(args);
int cnt = wcstombs(strBuff, tmp, 4095);
if(cnt < 0)
{
char *strInput = (char*)tmp;
for( int i = 0; i < (wcslen(tmp) * 2); i++ )
{
if(strInput[i] != 0)
strBuff[j++] = strInput[i];
}
strBuff[j] = '\0';
}
// AdkDebug (strBuff);
// Fix for IY98698 Certain Chinese character throws exception during recon (PMR10927999672)
// String to be logged is passed as second argument
AdkDebug("%s",strBuff);
}// end of func AgentDebug()
// end S15302
what is the alternative of this because i want to print group name in log.这是什么替代方案，因为我想在日志中打印组名。
2 个解决方案
解决方案1
1 已采纳 2019-04-25 14:34:36
That looks a lot more like a group membership list than a group name, but okay...这看起来更像是一个组成员列表而不是组名，但是好吧......
I'm pretty rusty on my C++ and va_args stuff, but it looks to me like your tmp array can only hold 2048 wchar_t, and I assume that you need one wchar_t for the null terminator and you've got about 40 characters in your format string.我对我的 C++ 和 va_args 的东西很生疏，但在我看来你的 tmp 数组只能容纳 2048 个 wchar_t，我假设你需要一个 wchar_t 作为空终止符并且你的格式有大约 40 个字符细绳。 So you're overflowing tmp when you pass in a string with length 2200. You'll overflow it with anything with a length that's longer than 2007 -- if I counted right.因此，当您传入一个长度为 2200 的字符串时，您将溢出 tmp。如果我没记错的话，任何长度超过 2007 的字符串都会溢出它。
解决方案2
0 2019-04-23 18:41:38
I was thinking the same thing?我在想同样的事？ A Group name as long as 2200 bytes or chars?一个组名只要 2200 字节或字符？ Ok.行。 I don't know how to "fix" your issue, but assuming you can't really "fix" it, to "fix" it I would either truncate the string or add the string as two values.我不知道如何“修复”你的问题，但假设你不能真正“修复”它，要“修复”它我会截断字符串或将字符串添加为两个值。 If the string is longer than 2150, break it up into two strings and write both of them to the log.如果字符串长于 2150，则将其分成两个字符串并将它们都写入日志。 Just a thought.只是一个想法。 Can't do more without more info.没有更多信息就无法做更多事情。
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