error in connecting when password contains semicolon

jenda86 posted 4 years ago in General

I am having problems when I try to connect to MSSQL server when password contains semicolon (i.e. abds;abc ) - HeidiSQL doesnt even try to connect and outputs error message: SQL Error(0) - Invalid argument of connection string (I translated this message from my native language, I hope it is right, I couldn't get it in English).

Since the server isn't under my management, but client's, it is not possible to change the pass, thus I cannot connect at all.

You might look into it.
Max posted 4 years ago
Hey jenda86

i got the same problem when i used heidi sql and the ssl tunnel. The problem is you use an " in your passwort and when plink.exe tried to connect to the server it looks like

plink.exe -P 22 -L 3307: -pw "yourPW" root@host.com

so when you have a double quotes in your password plink.exe dont send all the password it will send only to the second double quote.

Example: your"pw

plink.exe will send onli your because the syntax is

plink.exe -P 22 -L 3307: -pw "your"PW" root@host.com

try to change the password on the mysql host or open plink.exe manually... like this http://www.heidisql.com/forum.php?t=6561
jenda86 posted 4 years ago

Thanks for reply.
However that does not describe my problem.
I am not using SSH tunnel and not MYSQL at all. And I cannot change the password of MSSQL password, since it is server of our client who uses it elsewhere.

And when I try to connect with password where is not semicolon (;) the application at least try to connect. With semicolon it doesnt even try to connect and gives me that error msg.
ansgar posted 4 years ago
Passwords are not yet quoted in HeidiSQL's connection string, but they need to be if they contain a semicolon: http://forums.asp.net/t/1957484.aspx?Passwords+ending+with+semi+colon+as+the+terminal+element+in+connection+strings+

I'll change that but I need to test that first.
ansgar posted 4 years ago
Done in r4701. Please test and report back.
jenda86 posted 4 years ago
Hello ansgar.

Your fix helped and now Heidi connects without any issues.
Thanks for very quick fix and also for the great app!

kalvaro posted 4 years ago
// Quote password, just in case there is a semicolon or a double quote in it.
// See http://forums.asp.net/t/1957484.aspx?Passwords+ending+with+semi+colon+as+the+terminal+element+in+connection+strings+
if Pos('"', Parameters.Password) > 0 then
QuotedPassword := ''''+Parameters.Password+''''
QuotedPassword := '"'+Parameters.Password+'"';

What happens if the password has double quotes and single quotes?
ansgar posted 4 years ago
Yes that's what came into my mind as well. No clue. Microsoft does not say a word about that in their documentation.
ansgar posted 4 years ago
Oh, there is a way:

If the value contains both single-quote and double-quote characters, the quotation mark character used to enclose the value must be doubled every time it occurs within the value.

Quite much effort for just an escaping issue...

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