[cups.bugs] [MOD] STR #3194: Incorrect CGI handling assumes line-based output
twaugh.redhat
twaugh at redhat.com
Wed May 13 05:36:40 PDT 2009
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[STR New]
When sending the output of a command for CGI handling, an assumption is
made that the command will send output in a line-based fashion. When this
does not happen, incorrect HTTP output is given.
For example, php-cgi on the system I'm using behaves like this:
$ echo | strace -ewrite php-cgi >/dev/null
write(1, "X-Powered-By: PHP/5.1.6", 23) = 23
write(1, "\r\n", 2) = 2
write(1, "Content-type: text/html", 23) = 23
write(1, "\r\n", 2) = 2
write(1, "\r\n", 2) = 2
write(1, "\n", 1) = 1
Unfortunately this caused cupsd to give this response to an HTTP request
for a php file:
X-Powered-By: PHP/5.1.6HTTP/1.0 200 OK
Date: Wed, 13 May 2009 12:34:31 GMT
Server: CUPS/1.2
Content-Language: en_US
Note that the HTTP response line is tacked onto the end of the first few
characters of output from php-cgi.
The CUPS scheduler ought to be prepared to handle this situation.
Link: http://www.cups.org/str.php?L3194
Version: 1.3.10
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