[cups-devel] [UNKN] STR #4653: Request Entity Too Large error when trying to find a printer

[Jeff Silverman]

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[STR New]

When I attempt to find a printer using the web user interface, I get an
error message "Request Entity Too Large".  I did a packet capture using
tcpdump which I have attached.  In packet 4, it is sending  
HTML Form URL Encoded: application/x-www-form-urlencoded
Form item: "org.cups.sid" = "1881293ce7346c684fff5e07ce507c89"
Form item: "OP" = "find-new-printers"

The server is responding in packet 8 with HTTP/1.1 413 Request Entity Too
Large\r\n

Unfortunately, when I get the status of the cupsd, the log files in
/var/log/cups are not readable.  I don't know why that should be, because
the cupsd is running as UID 0.

root at jeffs-desktop:~# service cups status
● cups.service - CUPS Scheduler
   Loaded: loaded (/lib/systemd/system/cups.service; enabled; vendor
preset: enabled)
   Active: active (running) since Sun 2015-06-28 21:24:01 PDT; 2s ago
     Docs: man:cupsd(8)
 Main PID: 23373 (cupsd)
   CGroup: /system.slice/cups.service
           └─23373 /usr/sbin/cupsd -l

Jun 28 21:24:01 jeffs-desktop cupsd[23373]: Unable to change ownership of
"/var/log/cups" - Permission denied
Jun 28 21:24:01 jeffs-desktop cupsd[23373]: Unable to open log file
"/var/log/cups/page_log" - Permission denied
Jun 28 21:24:01 jeffs-desktop cupsd[23373]: Unable to change ownership of
"/var/log/cups" - Permission denied
Jun 28 21:24:01 jeffs-desktop cupsd[23373]: Unable to open log file
"/var/log/cups/error_log" - Permission denied
Jun 28 21:24:01 jeffs-desktop cupsd[23373]: Unable to change ownership of
"/var/log/cups" - Permission denied
Jun 28 21:24:01 jeffs-desktop cupsd[23373]: Unable to open log file
"/var/log/cups/error_log" - Permission denied
Jun 28 21:24:01 jeffs-desktop cupsd[23373]: Unable to change ownership of
"/var/log/cups" - Permission denied
Jun 28 21:24:01 jeffs-desktop cupsd[23373]: Unable to open log file
"/var/log/cups/error_log" - Permission denied
Jun 28 21:24:01 jeffs-desktop cupsd[23373]: Unable to change ownership of
"/var/log/cups" - Permission denied
Jun 28 21:24:01 jeffs-desktop cupsd[23373]: Unable to open log file
"/var/log/cups/error_log" - Permission denied
root at jeffs-desktop:~# 
root at jeffs-desktop:~# ls -ld /var
lrwxrwxrwx 1 root root 9 Jan 29 21:44 /var -> /home/var
root at jeffs-desktop:~# ls -ld /home
drwxr-xr-x 9 1001 root 4096 Jan 29 21:42 /home
root at jeffs-desktop:~# ls -ld /home/var
drwxrwxrwx 16 root root 4096 Mar 11 18:22 /home/var
root at jeffs-desktop:~# ls -ld /home/var/log/
drwxrwxrwx 16 root syslog 4096 Jun 28 20:21 /home/var/log/
root at jeffs-desktop:~# ls -ld /home/var/log/cups/
drwxrwxrwx 2 root root 4096 Jun 28 20:57 /home/var/log/cups/
root at jeffs-desktop:~# ls -ld /home/var/log/cups/*
- -rw-rw-rw- 1 root root 0 Jan 29 21:25 /home/var/log/cups/access_log
- -rw-rw-rw- 1 root root 0 Jan 29 21:25 /home/var/log/cups/error_log
- -rw-rw-rw- 1 root root 9 Jun 28 20:57 /home/var/log/cups/page_log
root at jeffs-desktop:~# 
root at jeffs-desktop:~# ps -ax | fgrep cup
11891 ?        Ssl    0:00 /usr/sbin/cups-browsed
23373 ?        Ss     0:00 /usr/sbin/cupsd -l
24826 pts/3    S+     0:00 grep -F --color=auto cup
root at jeffs-desktop:~# ps  -eo pid,uid,euid | egrep "11891|23373"
11891     0     0
23373     0     0
root at jeffs-desktop:~# 

I had this problem in Ubuntu 14.04 and I was unable to fix it.  I had hoped
that upgrading to Ubuntu 15.04 would fix it, but it didn't.

Link: https://www.cups.org/str.php?L4653
Version: 2.0.2
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