Hi Josef, I suspect your main mistake might be using a very old version of libmicrohttpd ;-). I tested it with the current one, and I get this:
$ cd src/examples $ ./querystring_example 8080 & $ wget -q -O - 'http://localhost:8080/?q=Cagney+%26+Lacey' <html><head><title>libmicrohttpd demo</title></head><body>Query string for "q" was "Cagney & Lacey"</body></html> Happy hacking! Christian On 2/10/21 8:40 AM, Josef Möllers wrote: > Hi, > > I have a small-ish client-server setup: > > * a plug-in for tvbrowser which schedules a recording by sending CGI > parameters to a remote recorder and > > * a scheduler program on the recorder which ... ahem ... schedules the > requested recording. > > The plug-in uses libcurl and (explicitly) encodes "&" characters in the > show's title as "%26". This also happens when I just "wget" the URL > handed over to libcurl. > > The scheduler uses libmicrohttpd (0.9.62-1 on Debian Buster) to retrieve > the CGI parameters and values and schedule the recording. > > The problem is that when I call MHD_get_connection_values(connection, > MHD_GET_ARGUMENT_KIND, ...), an embedded "%26" has been converted into > "&" before the CGI parameter string is parsed and this confuses the parser. > > Eg the request sent is > > /add?date=9.2.2021&time=23:45&channel=Das+Erste&title=Cagney+%26+Lacey&duration=10 > > (strace shows this as the data recv'ed) so the value of the > "title"-field *should* be "Cagney & Lacey", but when the string is > parsed into parameters, the "%26" had already been translated back into > an "&" and I get "Cagney " as the value of the "title" parameter > followed by an extra parameter " Lacey" without a value. > > What am I doing wrong? > > Thanks for helping and ... stay safe! > > Josef > > >
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