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Почему страница администрирования CUPS OpenWRT запрашивает вход и не принимает имя пользователя / пароль при добавлении принтера?

Я использую OpenWRT 14.07 с CUPS 1.5.4. Когда я пытаюсь добавить принтер, пользовательский интерфейс ведет меня через весь рабочий процесс, пока я не дойду до конца. В конце рабочего процесса, после того как я нашел принтер, добавил описания, указанные драйверы и т.д., я нажимаю «Добавить принтер».

На этом этапе пользовательский интерфейс администратора CUPS отправляет мне запрос базовой аутентификации с запросом имени пользователя и пароля в области «CUPS»:

Имя пользователя и пароль запрашивает http://192.168.0.1:631. На сайте написано: "CUPS"

Я не могу заставить админку принимать любую комбинацию имени пользователя и пароля. Я видел это раньше на разных экранах и ввел «root» / «пароль», и пользовательский интерфейс принял это там. С тех пор я поигрался с настройкой, и теперь единственный раз, когда меня запрашивают имя пользователя и пароль, это когда я нажимаю «Добавить принтер».

Я попытался добавить принтер вручную, напрямую отредактировав "printers.conf" (вопреки советам и от отчаяния). Теперь принтер появляется, но задания просто исчезают. (Я предполагаю, что совет был убедительным, и некоторые шаги по настройке очереди не выполнялись) «Ручное поведение принтера может быть другим вопросом, но применимое наблюдение здесь состоит в том, что« Изменить принтер »теперь имеет такое же поведение пароля.

Я новичок в CUPS (на этом уровне) и OpenWRT, но я использую Linux в течение 15-20 лет как лично, так и профессионально как на ПК, так и на встроенных средах.

Любая помощь приветствуется. Мои конфигурации прилагаются. Я искалечил их, чтобы попытаться обойти эту проблему некоторое время. 

root@OpenWrt:~# cat /etc/cups/cupsd.conf
########################################################################
#                                                                      #
# This is the CUPS configuration file.  If you are familiar with       #
# Apache or any of the other popular web servers, we've followed the   #
# same format.  Any configuration variable used here has the same      #
# semantics as the corresponding variable in Apache.  If we need       #
# different functionality then a different name is used to avoid       #
# confusion...                                                         #
#                                                                      #
########################################################################


AccessLog /var/log/cups/access_log
ErrorLog /var/log/cups/error_log
LogLevel debug
PageLog /var/log/cups/page_log
PreserveJobHistory No
PreserveJobFiles No
AutoPurgeJobs Yes
MaxJobs 25
MaxPrinterHistory 10
#Printcap /etc/printcap
#PrintcapFormat BSD
RequestRoot /var/cups
#RemoteRoot remroot
User root 
Group root
SystemGroup root
RIPCache 512k
TempDir /var/cups
Port 631
HostNameLookups Off
KeepAlive On
Browsing On
BrowseProtocols cups
ServerAlias *

<Location />
Order Deny,Allow
Allow From 127.0.0.1
Allow From 192.168.0.0/24
</Location>

<Location /admin>
#AuthType Basic
#AuthClass System
Order Allow,Deny
Allow From 192.168.0.0/24 
</Location>
root@OpenWrt:~# cat /etc/cups/printers.conf
# Printer configuration file for CUPS v1.5.4
# Written by cupsd on 2015-09-20 16:43
# DO NOT EDIT THIS FILE WHEN CUPSD IS RUNNING
<Printer Epson_Stylus_NX110>
UUID urn:uuid:957983ba-883f-319a-6eee-20506cef2ea1
Info Epson Stylus NX110
Location Sweet Pea Office
DeviceURI usb://EPSON/Stylus%20NX110?serial=LJRZ374542&interface=1
State Idle
StateTime 1442728667
Type 4
Accepting Yes
Shared Yes
JobSheets none none
QuotaPeriod 0
PageLimit 0
KLimit 0
OpPolicy default
ErrorPolicy stop-printer
</Printer>
<Printer LP>
UUID urn:uuid:9dfe533d-b988-3ed3-4a75-35020e61254c
Info Parallel Port Printer
DeviceURI parallel:/dev/printers/0
State Idle
StateTime 1442718561
Type 4
Accepting Yes
Shared Yes
JobSheets none none
QuotaPeriod 0
PageLimit 0
KLimit 0
OpPolicy default
ErrorPolicy stop-printer
</Printer>
<DefaultPrinter USB>
UUID urn:uuid:781f1f5e-b994-398e-4fd1-198ec9a5f80f
Info USB Printer
DeviceURI usb:/dev/usb/lp0
State Idle
StateTime 1442718561
Type 4
Accepting Yes
Shared Yes
JobSheets none none
QuotaPeriod 0
PageLimit 0
KLimit 0
OpPolicy default
ErrorPolicy stop-printer
</Printer>D

Вот конец error_log в режиме отладки

[20/Sep/2015:16:43:30 +0000] cupsdReadClient: 12 POST /admin HTTP/1.1
D [20/Sep/2015:16:43:30 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Not busy"
D [20/Sep/2015:16:43:30 +0000] cupsdAuthorize: No authentication data provided.
D [20/Sep/2015:16:43:30 +0000] [CGI] argv[0] = "/usr/lib/cups/cgi-bin/admin.cgi"
D [20/Sep/2015:16:43:30 +0000] [CGI] envp[0] = "CUPS_CACHEDIR=/var/cache/cups"
D [20/Sep/2015:16:43:30 +0000] [CGI] envp[1] = "CUPS_DATADIR=/usr/share/cups"
D [20/Sep/2015:16:43:30 +0000] [CGI] envp[2] = "CUPS_DOCROOT=/usr/share/doc/cups"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[3] = "CUPS_FONTPATH=/usr/share/cups/fonts"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[4] = "CUPS_REQUESTROOT=/var/cups"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[5] = "CUPS_SERVERBIN=/usr/lib/cups"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[6] = "CUPS_SERVERROOT=/etc/cups"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[7] = "CUPS_STATEDIR=/var/run/cups"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[8] = "HOME=/var/cups"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[9] = "PATH=/usr/lib/cups/filter:/usr/bin:/usr/sbin:/bin:/usr/bin"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[10] = "SERVER_ADMIN=root@OpenWrt"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[11] = "SOFTWARE=CUPS/1.5.4"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[12] = "TMPDIR=/var/cups"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[13] = "USER=root"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[14] = "CUPS_MAX_MESSAGE=2047"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[15] = "CUPS_SERVER=localhost"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[16] = "CUPS_ENCRYPTION=IfRequested"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[17] = "IPP_PORT=631"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[18] = "LANG=en_US.UTF8"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[19] = "REDIRECT_STATUS=1"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[20] = "GATEWAY_INTERFACE=CGI/1.1"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[21] = "SERVER_NAME=192.168.0.1"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[22] = "SERVER_PORT=631"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[23] = "REMOTE_ADDR=192.168.0.2"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[24] = "REMOTE_HOST=192.168.0.2"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[25] = "SCRIPT_NAME=/admin"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[26] = "SCRIPT_FILENAME=/usr/share/doc/cups/admin"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[27] = "SERVER_PROTOCOL=HTTP/1.1"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[28] = "HTTP_COOKIE=org.cups.sid=6f68a69fe0b24073f8995909eb2ae964"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[29] = "HTTP_USER_AGENT=Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:40.0) Gecko/20100101 Firefox/40.0"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[30] = "HTTP_REFERER=http://192.168.0.1:631/admin"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[31] = "REQUEST_METHOD=POST"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[32] = "CONTENT_LENGTH=1882"
D [20/Sep/2015:16:43:31 +0000] [CGI] envp[33] = "CONTENT_TYPE=multipart/form-data; boundary=---------------------------24817083417892195511822523910"
D [20/Sep/2015:16:43:31 +0000] [CGI] Started /usr/lib/cups/cgi-bin/admin.cgi (PID 17554)
I [20/Sep/2015:16:43:31 +0000] Started "/usr/lib/cups/cgi-bin/admin.cgi" (pid=17554)
D [20/Sep/2015:16:43:31 +0000] cupsdSendCommand: 12 file=14
D [20/Sep/2015:16:43:31 +0000] [CGI] admin.cgi started...
D [20/Sep/2015:16:43:31 +0000] [CGI] http=0x77f5aa78
D [20/Sep/2015:16:43:31 +0000] [CGI] cgiSetVariable: SECTION="admin"
D [20/Sep/2015:16:43:31 +0000] [CGI] cgiSetVariable: REFRESH_PAGE=""
D [20/Sep/2015:16:43:31 +0000] [CGI] org.cups.sid cookie is "6f68a69fe0b24073f8995909eb2ae964"
D [20/Sep/2015:16:43:31 +0000] [CGI] cgiSetVariable: org.cups.sid="6f68a69fe0b24073f8995909eb2ae964"
D [20/Sep/2015:16:43:31 +0000] [CGI] cgiSetVariable: OP="modify-printer"
D [20/Sep/2015:16:43:31 +0000] [CGI] cgiSetVariable: printer_name="Epson_Stylus_NX110"
D [20/Sep/2015:16:43:31 +0000] [CGI] cgiSetVariable: BAUDRATE=""
D [20/Sep/2015:16:43:31 +0000] [CGI] cgiSetVariable: BITS=""
D [20/Sep/2015:16:43:31 +0000] [CGI] cgiSetVariable: PARITY=""
D [20/Sep/2015:16:43:31 +0000] [CGI] cgiSetVariable: FLOW=""
D [20/Sep/2015:16:43:31 +0000] [CGI] cgiSetVariable: PRINTER_INFO="Epson Stylus NX110"
D [20/Sep/2015:16:43:31 +0000] [CGI] cgiSetVariable: PRINTER_LOCATION="Sweet Pea Office"
D [20/Sep/2015:16:43:31 +0000] [CGI] cgiSetVariable: DEVICE_URI="usb://EPSON/Stylus%20NX110?serial=LJRZ374542&interface=1"
D [20/Sep/2015:16:43:31 +0000] [CGI] cgiSetVariable: PRINTER_IS_SHARED="on"
D [20/Sep/2015:16:43:31 +0000] [CGI] cgiSetVariable: PPD_NAME="raw"
D [20/Sep/2015:16:43:31 +0000] [CGI] cgiSetVariable: MAX_FILE_SIZE="262144"
D [20/Sep/2015:16:43:31 +0000] [CGI] cgiSetVariable: PPD_FILE=""
D [20/Sep/2015:16:43:31 +0000] [CGI] op="modify-printer"...
D [20/Sep/2015:16:43:31 +0000] [CGI] do_am_printer: DEVICE_URI="usb://EPSON/Stylus%20NX110?serial=LJRZ374542&interface=1"
D [20/Sep/2015:16:43:31 +0000] cupsdAcceptClient: 13 from localhost:631 (IPv6)
D [20/Sep/2015:16:43:31 +0000] cupsdReadClient: 13 POST / HTTP/1.1
D [20/Sep/2015:16:43:31 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Active clients"
D [20/Sep/2015:16:43:31 +0000] cupsdAuthorize: No authentication data provided.
D [20/Sep/2015:16:43:31 +0000] cupsdReadClient: 13 1.1 Get-Printer-Attributes 1
D [20/Sep/2015:16:43:31 +0000] Get-Printer-Attributes ipp://localhost/printers/Epson_Stylus_NX110
D [20/Sep/2015:16:43:31 +0000] Returning IPP successful-ok for Get-Printer-Attributes (ipp://localhost/printers/Epson_Stylus_NX110) from localhost
D [20/Sep/2015:16:43:31 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Active clients"
D [20/Sep/2015:16:43:31 +0000] cupsdReadClient: 13 POST /admin/ HTTP/1.1
D [20/Sep/2015:16:43:31 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Active clients"
D [20/Sep/2015:16:43:31 +0000] cupsdAuthorize: No authentication data provided.
D [20/Sep/2015:16:43:31 +0000] cupsdReadClient: 13 1.1 CUPS-Add-Modify-Printer 1
D [20/Sep/2015:16:43:31 +0000] CUPS-Add-Modify-Printer ipp://localhost/printers/Epson_Stylus_NX110
D [20/Sep/2015:16:43:31 +0000] cupsdIsAuthorized: username=""
D [20/Sep/2015:16:43:31 +0000] Returning HTTP Unauthorized for CUPS-Add-Modify-Printer (ipp://localhost/printers/Epson_Stylus_NX110) from localhost
D [20/Sep/2015:16:43:31 +0000] cupsdSendHeader: 13 WWW-Authenticate: Basic realm="CUPS", trc="y"
D [20/Sep/2015:16:43:31 +0000] [CGI] cgi_passwd(prompt="Password for nobody on localhost? ") called!
D [20/Sep/2015:16:43:31 +0000] PID 17554 (/usr/lib/cups/cgi-bin/admin.cgi) exited with no errors.
D [20/Sep/2015:16:43:31 +0000] cupsdReadClient: 13 WAITING Closing on EOF
D [20/Sep/2015:16:43:31 +0000] cupsdCloseClient: 13
D [20/Sep/2015:16:43:31 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Active clients"
D [20/Sep/2015:16:43:31 +0000] Script header: Status: 401
D [20/Sep/2015:16:43:31 +0000] cupsdSendHeader: 12 WWW-Authenticate: Basic realm="CUPS"
D [20/Sep/2015:16:43:31 +0000] Script header: 
D [20/Sep/2015:16:43:31 +0000] cupsdWriteClient: 12 Closing because Keep-Alive disabled
D [20/Sep/2015:16:43:31 +0000] cupsdCloseClient: 12
D [20/Sep/2015:16:43:31 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Active clients"
D [20/Sep/2015:16:43:38 +0000] cupsdAcceptClient: 12 from 192.168.0.2:631 (IPv4)
D [20/Sep/2015:16:43:38 +0000] cupsdReadClient: 12 POST /admin HTTP/1.1
D [20/Sep/2015:16:43:38 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Not busy"
D [20/Sep/2015:16:43:38 +0000] cupsdAuthorize: Authorized as root using Basic
D [20/Sep/2015:16:43:38 +0000] [CGI] argv[0] = "/usr/lib/cups/cgi-bin/admin.cgi"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[0] = "CUPS_CACHEDIR=/var/cache/cups"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[1] = "CUPS_DATADIR=/usr/share/cups"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[2] = "CUPS_DOCROOT=/usr/share/doc/cups"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[3] = "CUPS_FONTPATH=/usr/share/cups/fonts"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[4] = "CUPS_REQUESTROOT=/var/cups"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[5] = "CUPS_SERVERBIN=/usr/lib/cups"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[6] = "CUPS_SERVERROOT=/etc/cups"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[7] = "CUPS_STATEDIR=/var/run/cups"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[8] = "HOME=/var/cups"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[9] = "PATH=/usr/lib/cups/filter:/usr/bin:/usr/sbin:/bin:/usr/bin"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[10] = "SERVER_ADMIN=root@OpenWrt"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[11] = "SOFTWARE=CUPS/1.5.4"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[12] = "TMPDIR=/var/cups"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[13] = "USER=root"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[14] = "CUPS_MAX_MESSAGE=2047"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[15] = "CUPS_SERVER=localhost"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[16] = "CUPS_ENCRYPTION=IfRequested"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[17] = "IPP_PORT=631"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[18] = "AUTH_TYPE=Basic"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[19] = "LANG=en_US.UTF8"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[20] = "REDIRECT_STATUS=1"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[21] = "GATEWAY_INTERFACE=CGI/1.1"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[22] = "SERVER_NAME=192.168.0.1"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[23] = "SERVER_PORT=631"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[24] = "REMOTE_ADDR=192.168.0.2"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[25] = "REMOTE_HOST=192.168.0.2"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[26] = "SCRIPT_NAME=/admin"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[27] = "SCRIPT_FILENAME=/usr/share/doc/cups/admin"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[28] = "REMOTE_USER=root"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[29] = "SERVER_PROTOCOL=HTTP/1.1"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[30] = "HTTP_COOKIE=org.cups.sid=6f68a69fe0b24073f8995909eb2ae964"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[31] = "HTTP_USER_AGENT=Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:40.0) Gecko/20100101 Firefox/40.0"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[32] = "HTTP_REFERER=http://192.168.0.1:631/admin"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[33] = "REQUEST_METHOD=POST"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[34] = "CONTENT_LENGTH=1882"
D [20/Sep/2015:16:43:38 +0000] [CGI] envp[35] = "CONTENT_TYPE=multipart/form-data; boundary=---------------------------24817083417892195511822523910"
D [20/Sep/2015:16:43:38 +0000] [CGI] Started /usr/lib/cups/cgi-bin/admin.cgi (PID 17555)
I [20/Sep/2015:16:43:38 +0000] Started "/usr/lib/cups/cgi-bin/admin.cgi" (pid=17555)
D [20/Sep/2015:16:43:38 +0000] cupsdSendCommand: 12 file=14
D [20/Sep/2015:16:43:38 +0000] [CGI] admin.cgi started...
D [20/Sep/2015:16:43:38 +0000] [CGI] http=0x779c3a78
D [20/Sep/2015:16:43:38 +0000] [CGI] cgiSetVariable: SECTION="admin"
D [20/Sep/2015:16:43:38 +0000] [CGI] cgiSetVariable: REFRESH_PAGE=""
D [20/Sep/2015:16:43:38 +0000] [CGI] org.cups.sid cookie is "6f68a69fe0b24073f8995909eb2ae964"
D [20/Sep/2015:16:43:38 +0000] [CGI] cgiSetVariable: org.cups.sid="6f68a69fe0b24073f8995909eb2ae964"
D [20/Sep/2015:16:43:38 +0000] [CGI] cgiSetVariable: OP="modify-printer"
D [20/Sep/2015:16:43:38 +0000] [CGI] cgiSetVariable: printer_name="Epson_Stylus_NX110"
D [20/Sep/2015:16:43:38 +0000] [CGI] cgiSetVariable: BAUDRATE=""
D [20/Sep/2015:16:43:38 +0000] [CGI] cgiSetVariable: BITS=""
D [20/Sep/2015:16:43:38 +0000] [CGI] cgiSetVariable: PARITY=""
D [20/Sep/2015:16:43:38 +0000] [CGI] cgiSetVariable: FLOW=""
D [20/Sep/2015:16:43:38 +0000] [CGI] cgiSetVariable: PRINTER_INFO="Epson Stylus NX110"
D [20/Sep/2015:16:43:38 +0000] [CGI] cgiSetVariable: PRINTER_LOCATION="Sweet Pea Office"
D [20/Sep/2015:16:43:38 +0000] [CGI] cgiSetVariable: DEVICE_URI="usb://EPSON/Stylus%20NX110?serial=LJRZ374542&interface=1"
D [20/Sep/2015:16:43:38 +0000] [CGI] cgiSetVariable: PRINTER_IS_SHARED="on"
D [20/Sep/2015:16:43:38 +0000] [CGI] cgiSetVariable: PPD_NAME="raw"
D [20/Sep/2015:16:43:38 +0000] [CGI] cgiSetVariable: MAX_FILE_SIZE="262144"
D [20/Sep/2015:16:43:38 +0000] [CGI] cgiSetVariable: PPD_FILE=""
D [20/Sep/2015:16:43:38 +0000] [CGI] op="modify-printer"...
D [20/Sep/2015:16:43:38 +0000] [CGI] do_am_printer: DEVICE_URI="usb://EPSON/Stylus%20NX110?serial=LJRZ374542&interface=1"
D [20/Sep/2015:16:43:38 +0000] cupsdAcceptClient: 13 from localhost:631 (IPv6)
D [20/Sep/2015:16:43:38 +0000] cupsdReadClient: 13 POST / HTTP/1.1
D [20/Sep/2015:16:43:38 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Active clients"
D [20/Sep/2015:16:43:38 +0000] cupsdAuthorize: No authentication data provided.
D [20/Sep/2015:16:43:38 +0000] cupsdReadClient: 13 1.1 Get-Printer-Attributes 1
D [20/Sep/2015:16:43:38 +0000] Get-Printer-Attributes ipp://localhost/printers/Epson_Stylus_NX110
D [20/Sep/2015:16:43:38 +0000] Returning IPP successful-ok for Get-Printer-Attributes (ipp://localhost/printers/Epson_Stylus_NX110) from localhost
D [20/Sep/2015:16:43:38 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Active clients"
D [20/Sep/2015:16:43:38 +0000] cupsdReadClient: 13 POST /admin/ HTTP/1.1
D [20/Sep/2015:16:43:38 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Active clients"
D [20/Sep/2015:16:43:38 +0000] cupsdAuthorize: No authentication data provided.
D [20/Sep/2015:16:43:38 +0000] cupsdReadClient: 13 1.1 CUPS-Add-Modify-Printer 1
D [20/Sep/2015:16:43:38 +0000] CUPS-Add-Modify-Printer ipp://localhost/printers/Epson_Stylus_NX110
D [20/Sep/2015:16:43:38 +0000] cupsdIsAuthorized: username=""
D [20/Sep/2015:16:43:38 +0000] Returning HTTP Unauthorized for CUPS-Add-Modify-Printer (ipp://localhost/printers/Epson_Stylus_NX110) from localhost
D [20/Sep/2015:16:43:38 +0000] cupsdSendHeader: 13 WWW-Authenticate: Basic realm="CUPS", trc="y"
D [20/Sep/2015:16:43:38 +0000] [CGI] cgi_passwd(prompt="Password for nobody on localhost? ") called!
D [20/Sep/2015:16:43:38 +0000] PID 17555 (/usr/lib/cups/cgi-bin/admin.cgi) exited with no errors.
D [20/Sep/2015:16:43:38 +0000] cupsdReadClient: 13 WAITING Closing on EOF
D [20/Sep/2015:16:43:38 +0000] cupsdCloseClient: 13
D [20/Sep/2015:16:43:38 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Active clients"
D [20/Sep/2015:16:43:38 +0000] Script header: Status: 401
D [20/Sep/2015:16:43:38 +0000] cupsdSendHeader: 12 WWW-Authenticate: Basic realm="CUPS"
D [20/Sep/2015:16:43:38 +0000] Script header: 
D [20/Sep/2015:16:43:38 +0000] cupsdWriteClient: 12 Closing because Keep-Alive disabled
D [20/Sep/2015:16:43:38 +0000] cupsdCloseClient: 12
D [20/Sep/2015:16:43:38 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Active clients"
D [20/Sep/2015:16:53:35 +0000] cupsdAcceptClient: 12 from 192.168.0.2:631 (IPv4)
D [20/Sep/2015:16:53:35 +0000] Report: clients=1
D [20/Sep/2015:16:53:35 +0000] Report: jobs=0
D [20/Sep/2015:16:53:35 +0000] Report: jobs-active=0
D [20/Sep/2015:16:53:35 +0000] Report: printers=3
D [20/Sep/2015:16:53:35 +0000] Report: printers-implicit=0
D [20/Sep/2015:16:53:35 +0000] Report: stringpool-string-count=564
D [20/Sep/2015:16:53:35 +0000] Report: stringpool-alloc-bytes=5824
D [20/Sep/2015:16:53:35 +0000] Report: stringpool-total-bytes=11944
D [20/Sep/2015:16:53:35 +0000] cupsdReadClient: 12 POST /admin HTTP/1.1
D [20/Sep/2015:16:53:35 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Not busy"
D [20/Sep/2015:16:53:35 +0000] cupsdAuthorize: No authentication data provided.
D [20/Sep/2015:16:53:35 +0000] [CGI] argv[0] = "/usr/lib/cups/cgi-bin/admin.cgi"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[0] = "CUPS_CACHEDIR=/var/cache/cups"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[1] = "CUPS_DATADIR=/usr/share/cups"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[2] = "CUPS_DOCROOT=/usr/share/doc/cups"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[3] = "CUPS_FONTPATH=/usr/share/cups/fonts"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[4] = "CUPS_REQUESTROOT=/var/cups"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[5] = "CUPS_SERVERBIN=/usr/lib/cups"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[6] = "CUPS_SERVERROOT=/etc/cups"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[7] = "CUPS_STATEDIR=/var/run/cups"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[8] = "HOME=/var/cups"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[9] = "PATH=/usr/lib/cups/filter:/usr/bin:/usr/sbin:/bin:/usr/bin"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[10] = "SERVER_ADMIN=root@OpenWrt"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[11] = "SOFTWARE=CUPS/1.5.4"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[12] = "TMPDIR=/var/cups"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[13] = "USER=root"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[14] = "CUPS_MAX_MESSAGE=2047"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[15] = "CUPS_SERVER=localhost"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[16] = "CUPS_ENCRYPTION=IfRequested"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[17] = "IPP_PORT=631"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[18] = "LANG=en_US.UTF8"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[19] = "REDIRECT_STATUS=1"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[20] = "GATEWAY_INTERFACE=CGI/1.1"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[21] = "SERVER_NAME=192.168.0.1"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[22] = "SERVER_PORT=631"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[23] = "REMOTE_ADDR=192.168.0.2"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[24] = "REMOTE_HOST=192.168.0.2"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[25] = "SCRIPT_NAME=/admin"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[26] = "SCRIPT_FILENAME=/usr/share/doc/cups/admin"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[27] = "SERVER_PROTOCOL=HTTP/1.1"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[28] = "HTTP_COOKIE=org.cups.sid=6f68a69fe0b24073f8995909eb2ae964"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[29] = "HTTP_USER_AGENT=Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:40.0) Gecko/20100101 Firefox/40.0"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[30] = "HTTP_REFERER=http://192.168.0.1:631/admin"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[31] = "REQUEST_METHOD=POST"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[32] = "CONTENT_LENGTH=1882"
D [20/Sep/2015:16:53:35 +0000] [CGI] envp[33] = "CONTENT_TYPE=multipart/form-data; boundary=---------------------------15498629441310769008115995165"
D [20/Sep/2015:16:53:35 +0000] [CGI] Started /usr/lib/cups/cgi-bin/admin.cgi (PID 17748)
I [20/Sep/2015:16:53:35 +0000] Started "/usr/lib/cups/cgi-bin/admin.cgi" (pid=17748)
D [20/Sep/2015:16:53:35 +0000] cupsdSendCommand: 12 file=14
D [20/Sep/2015:16:53:35 +0000] [CGI] admin.cgi started...
D [20/Sep/2015:16:53:35 +0000] [CGI] http=0x77856a78
D [20/Sep/2015:16:53:35 +0000] [CGI] cgiSetVariable: SECTION="admin"
D [20/Sep/2015:16:53:35 +0000] [CGI] cgiSetVariable: REFRESH_PAGE=""
D [20/Sep/2015:16:53:35 +0000] [CGI] org.cups.sid cookie is "6f68a69fe0b24073f8995909eb2ae964"
D [20/Sep/2015:16:53:35 +0000] [CGI] cgiSetVariable: org.cups.sid="6f68a69fe0b24073f8995909eb2ae964"
D [20/Sep/2015:16:53:35 +0000] [CGI] cgiSetVariable: OP="modify-printer"
D [20/Sep/2015:16:53:35 +0000] [CGI] cgiSetVariable: printer_name="Epson_Stylus_NX110"
D [20/Sep/2015:16:53:35 +0000] [CGI] cgiSetVariable: BAUDRATE=""
D [20/Sep/2015:16:53:35 +0000] [CGI] cgiSetVariable: BITS=""
D [20/Sep/2015:16:53:35 +0000] [CGI] cgiSetVariable: PARITY=""
D [20/Sep/2015:16:53:35 +0000] [CGI] cgiSetVariable: FLOW=""
D [20/Sep/2015:16:53:35 +0000] [CGI] cgiSetVariable: PRINTER_INFO="Epson Stylus NX110"
D [20/Sep/2015:16:53:35 +0000] [CGI] cgiSetVariable: PRINTER_LOCATION="Sweet Pea Office"
D [20/Sep/2015:16:53:35 +0000] [CGI] cgiSetVariable: DEVICE_URI="usb://EPSON/Stylus%20NX110?serial=LJRZ374542&interface=1"
D [20/Sep/2015:16:53:35 +0000] [CGI] cgiSetVariable: PRINTER_IS_SHARED="on"
D [20/Sep/2015:16:53:35 +0000] [CGI] cgiSetVariable: PPD_NAME="raw"
D [20/Sep/2015:16:53:35 +0000] [CGI] cgiSetVariable: MAX_FILE_SIZE="262144"
D [20/Sep/2015:16:53:35 +0000] [CGI] cgiSetVariable: PPD_FILE=""
D [20/Sep/2015:16:53:35 +0000] [CGI] op="modify-printer"...
D [20/Sep/2015:16:53:35 +0000] [CGI] do_am_printer: DEVICE_URI="usb://EPSON/Stylus%20NX110?serial=LJRZ374542&interface=1"
D [20/Sep/2015:16:53:35 +0000] cupsdAcceptClient: 13 from localhost:631 (IPv6)
D [20/Sep/2015:16:53:35 +0000] cupsdReadClient: 13 POST / HTTP/1.1
D [20/Sep/2015:16:53:35 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Active clients"
D [20/Sep/2015:16:53:35 +0000] cupsdAuthorize: No authentication data provided.
D [20/Sep/2015:16:53:36 +0000] cupsdReadClient: 13 1.1 Get-Printer-Attributes 1
D [20/Sep/2015:16:53:36 +0000] Get-Printer-Attributes ipp://localhost/printers/Epson_Stylus_NX110
D [20/Sep/2015:16:53:36 +0000] Returning IPP successful-ok for Get-Printer-Attributes (ipp://localhost/printers/Epson_Stylus_NX110) from localhost
D [20/Sep/2015:16:53:36 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Active clients"
D [20/Sep/2015:16:53:36 +0000] cupsdReadClient: 13 POST /admin/ HTTP/1.1
D [20/Sep/2015:16:53:36 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Active clients"
D [20/Sep/2015:16:53:36 +0000] cupsdAuthorize: No authentication data provided.
D [20/Sep/2015:16:53:36 +0000] cupsdReadClient: 13 1.1 CUPS-Add-Modify-Printer 1
D [20/Sep/2015:16:53:36 +0000] CUPS-Add-Modify-Printer ipp://localhost/printers/Epson_Stylus_NX110
D [20/Sep/2015:16:53:36 +0000] cupsdIsAuthorized: username=""
D [20/Sep/2015:16:53:36 +0000] Returning HTTP Unauthorized for CUPS-Add-Modify-Printer (ipp://localhost/printers/Epson_Stylus_NX110) from localhost
D [20/Sep/2015:16:53:36 +0000] cupsdSendHeader: 13 WWW-Authenticate: Basic realm="CUPS", trc="y"
D [20/Sep/2015:16:53:36 +0000] [CGI] cgi_passwd(prompt="Password for nobody on localhost? ") called!
D [20/Sep/2015:16:53:36 +0000] cupsdReadClient: 13 WAITING Closing on EOF
D [20/Sep/2015:16:53:36 +0000] cupsdCloseClient: 13
D [20/Sep/2015:16:53:36 +0000] cupsdSetBusyState: newbusy="Active clients", busy="Active clients"
D [20/Sep/2015:16:53:36 +0000] PID 17748 (/usr/lib/cups/cgi-bin/admin.cgi) exited with no errors.
D [20/Sep/2015:16:53:36 +0000] Script header: Status: 401
D [20/Sep/2015:16:53:36 +0000] cupsdSendHeader: 12 WWW-Authenticate: Basic realm="CUPS"
D [20/Sep/2015:16:53:36 +0000] Script header: 
D [20/Sep/2015:16:53:36 +0000] cupsdWriteClient: 12 Closing because Keep-Alive disabled
D [20/Sep/2015:16:53:36 +0000] cupsdCloseClient: 12
D [20/Sep/2015:16:53:36 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Active clients"

Мне нужно было создать пользователя и группу «lp», а также группу «lpadmin».
Затем я установил поля User и Group в файле конфигурации на

Пользователь = lp Группа = lp

После этого OpenWrt перестал спрашивать мой пароль и позволил мне завершить настройку принтера. Я считаю, что дистрибутив CUPS 1.5.4 ошибочно принял ошибку отказа в разрешении для файлов cups как ошибку авторизации пользователя веб-пользователя, что привело к возникновению этой проблемы.