lp: Bad Request #5211

swbil · 2018-01-02T13:01:46Z

Server: cups 1.3.7
Client: Kbuntu 17.04 / Fedora 27 (since cups-Version 2.2.4-2.3b1)

Work: Printing from firefox
Don't Work: Printing from LibreOffice, Okular or lp

~> lp -d lama /etc/hosts
lp: Bad Request

debug2-LogLevel

d [02/Jan/2018:13:46:14 +0100] cupsdDoSelect: Write on fd 10...
d [02/Jan/2018:13:46:14 +0100] cupsdDoSelect: polling 7 fds for 1 seconds...
d [02/Jan/2018:13:46:14 +0100] cupsdDoSelect: epoll() returned 1...
d [02/Jan/2018:13:46:14 +0100] cupsdDoSelect: Write on fd 10...
d [02/Jan/2018:13:46:14 +0100] cupsdWriteClient: 10 bytes < 0
d [02/Jan/2018:13:46:14 +0100] cupsdAddSelect: fd=10, read_cb=0x40f013, write_cb=(nil), data=0x59de20
d [02/Jan/2018:13:46:14 +0100] cupsdDoSelect: polling 7 fds for 1 seconds...
d [02/Jan/2018:13:46:14 +0100] cupsdDoSelect: epoll() returned 1...
d [02/Jan/2018:13:46:14 +0100] cupsdDoSelect: Read on fd 10...
d [02/Jan/2018:13:46:14 +0100] cupsdReadClient: 10, used=0, file=-1 state=0
D [02/Jan/2018:13:46:14 +0100] cupsdReadClient: 10 POST /printers/lama HTTP/1.1
d [02/Jan/2018:13:46:14 +0100] cupsdFindBest: uri = "/printers/lama"...
d [02/Jan/2018:13:46:14 +0100] cupsdFindBest: Location CUPS_INTERNAL_BROWSE_ACL Limit 0
d [02/Jan/2018:13:46:14 +0100] cupsdFindBest: Location /printers/name Limit 7f
d [02/Jan/2018:13:46:14 +0100] cupsdFindBest: Location /printers Limit 7f
d [02/Jan/2018:13:46:14 +0100] cupsdFindBest: Location /jobs Limit 7f
d [02/Jan/2018:13:46:14 +0100] cupsdFindBest: Location /classes/name Limit 7f
d [02/Jan/2018:13:46:14 +0100] cupsdFindBest: Location /classes Limit 7f
d [02/Jan/2018:13:46:14 +0100] cupsdFindBest: Location /admin/log Limit 7f
d [02/Jan/2018:13:46:14 +0100] cupsdFindBest: Location /admin/conf Limit 7f
d [02/Jan/2018:13:46:14 +0100] cupsdFindBest: Location /admin Limit 7f
d [02/Jan/2018:13:46:14 +0100] cupsdFindBest: Location / Limit 7f
d [02/Jan/2018:13:46:14 +0100] cupsdFindBest: best = /printers
d [02/Jan/2018:13:46:14 +0100] cupsdAuthorize: con->uri="/printers/lama", con->best=0x555100(/printers)
d [02/Jan/2018:13:46:14 +0100] cupsdAuthorize: Authorization=""
D [02/Jan/2018:13:46:14 +0100] cupsdAuthorize: No authentication data provided.
d [02/Jan/2018:13:46:14 +0100] cupsdIsAuthorized: con->uri="/printers/lama", con->best=0x555100(/printers)
d [02/Jan/2018:13:46:14 +0100] cupsdIsAuthorized: level=CUPSD_AUTH_ANON, type=None, satisfy=CUPSD_AUTH_SATISFY_ALL, num_names=0
d [02/Jan/2018:13:46:14 +0100] cupsdIsAuthorized: auth=CUPSD_AUTH_ALLOW...
d [02/Jan/2018:13:46:14 +0100] POST /printers/lama
d [02/Jan/2018:13:46:14 +0100] CONTENT_TYPE = application/ipp
d [02/Jan/2018:13:46:14 +0100] cupsdReadClient: 10 con->data_encoding=HTTP_ENCODE_LENGTH, con->data_remaining=347, con->file=-1
E [02/Jan/2018:13:46:14 +0100] cupsdReadClient: 10 IPP Read Error!
D [02/Jan/2018:13:46:14 +0100] cupsdSendError: 10 code=400 (Bad Request)
D [02/Jan/2018:13:46:14 +0100] cupsdCloseClient: 10
d [02/Jan/2018:13:46:14 +0100] cupsdRemoveSelect: fd=10
d [02/Jan/2018:13:46:14 +0100] cupsdDoSelect: polling 6 fds for 1 seconds...
d [02/Jan/2018:13:46:15 +0100] cupsdDoSelect: epoll() returned 0...
d [02/Jan/2018:13:46:15 +0100] select_timeout(0): 100 seconds to timeout a client connection
d [02/Jan/2018:13:46:15 +0100] cupsdDoSelect: polling 6 fds for 100 seconds...

The text was updated successfully, but these errors were encountered:

jsmeix · 2018-01-03T09:41:33Z

@swbil

Server: cups 1.3.7
Client: cups-Version 2.2.4-2.3b1

CUPS >= 1.6 has major incompatible changes
compared to CUPS up to version 1.5.4
in particular when printing via network:

The IPP protocol default version increased from 1.1 to 2.0.
Older IPP servers like CUPS 1.3.x reject IPP 2.0 requests
with "Bad Request", see
#4231

By adding '/version=1.1' to ServerName in client.conf e.g.
ServerName older.server.example.com/version=1.1
or to the CUPS_SERVER environment variable value
or by adding it to the server name value of the '-h' option e.g.
lpstat -h older.server.example.com/version=1.1 -p
the older IPP protocol version for older servers must be
specified explicitly.

Cf. the section about"CUPS Version Upgrade" in
https://www.suse.com/releasenotes/x86_64/SUSE-SLES/12/

swbil · 2018-01-03T12:02:22Z

@jsmeix: thanks for your Tip, but we already use IPP 1.1 all time. We can print from firefox under Kbuntu 17.04 / Fedora 27.

cat /etc/cups/client.conf
ServerName domainXX.com/version=1.1

lp command works with cups-client from
Ubuntu 16.10 cups-2.1.3
Debian 9.3 cups-2.2.1

Something must be changed (IPP?) from cups 2.2.1 to 2.2.4.

michaelrsweet · 2018-01-08T20:29:33Z

@swbil Can you use Wireshark to capture the traffic between the client and server? Nothing changed between 2.2.1 and 2.2.4 that would cause that kind of issue...

swbil · 2018-01-11T14:57:14Z

Dear @michaelrsweet, you and your Team did/do a great great Job in the last 20 years!! ThankYOU! Without you, we would have had to live with lpsched of SUN or Windows printserver ;-)

Thanks for the hint with wireshark! Kbuntu 17.10, Debian Testing, Fedora 28 make IPP Request (Create-Job) with !! IPP 2.0 !! only. That's why it does not work and we'got "lp: Bad Request"

Is it a cups or linux problem?

### IPP Request with IPP 1.1
74	6.599593048	10.0.2.15	X.X.X.X	IPP	297	IPP Request (Get-Printer-Attributes)

Frame 74: 297 bytes on wire (2376 bits), 297 bytes captured (2376 bits) on interface 0
Ethernet II, Src: PcsCompu_b7:d4:66 (08:00:27:b7:d4:66), Dst: RealtekU_12:35:02 (52:54:00:12:35:02)
Internet Protocol Version 4, Src: 10.0.2.15, Dst: X.X.X.X
Transmission Control Protocol, Src Port: 41348, Dst Port: 631, Seq: 2479, Ack: 28555, Len: 243
[2 Reassembled TCP Segments (493 bytes): #73(250), #74(243)]
Hypertext Transfer Protocol
Internet Printing Protocol
    [Response In: 86]
    version: 1.1
    operation-id: Get-Printer-Attributes (0x000b)
    request-id: 4
    operation-attributes-tag
    end-of-attributes-tag

### IPP Response with IPP 1.1
86	6.607292615	X.X.X.X	10.0.2.15	IPP	1175	IPP Response (successful-ok)

Frame 86: 1175 bytes on wire (9400 bits), 1175 bytes captured (9400 bits) on interface 0
Ethernet II, Src: RealtekU_12:35:02 (52:54:00:12:35:02), Dst: PcsCompu_b7:d4:66 (08:00:27:b7:d4:66)
Internet Protocol Version 4, Src: X.X.X.X, Dst: 10.0.2.15
Transmission Control Protocol, Src Port: 631, Dst Port: 41348, Seq: 32775, Ack: 2722, Len: 1121
[6 Reassembled TCP Segments (5316 bytes): #78(198), #80(1448), #82(591), #83(1448), #85(510), #86(1121)]
Hypertext Transfer Protocol
Internet Printing Protocol
    [Request In: 74]
    [Response Time: 0.007699567 seconds]
    version: 1.1
    status-code: Successful (successful-ok)
    request-id: 4
    operation-attributes-tag
    printer-attributes-tag
    end-of-attributes-tag

### IPP Request (Create-Job) with !! IPP 2.0 !!
### That's why it does not work!! 
89	6.609333682	10.0.2.15	X.X.X.X	IPP	400	IPP Request (Create-Job)

Frame 89: 400 bytes on wire (3200 bits), 400 bytes captured (3200 bits) on interface 0
Ethernet II, Src: PcsCompu_b7:d4:66 (08:00:27:b7:d4:66), Dst: RealtekU_12:35:02 (52:54:00:12:35:02)
Internet Protocol Version 4, Src: 10.0.2.15, Dst: X.X.X.X
Transmission Control Protocol, Src Port: 41348, Dst Port: 631, Seq: 2972, Ack: 33896, Len: 346
[2 Reassembled TCP Segments (596 bytes): #88(250), #89(346)]
Hypertext Transfer Protocol
Internet Printing Protocol
    version: 2.0
    operation-id: Create-Job (0x0005)
    request-id: 5
    operation-attributes-tag
    job-attributes-tag
    end-of-attributes-tag

### Error-Text to client
93	6.614426317	X.X.X.X	10.0.2.15	HTTP	610	HTTP/1.1 400 Bad Request  (text/html)

Frame 93: 610 bytes on wire (4880 bits), 610 bytes captured (4880 bits) on interface 0
Ethernet II, Src: RealtekU_12:35:02 (52:54:00:12:35:02), Dst: PcsCompu_b7:d4:66 (08:00:27:b7:d4:66)
Internet Protocol Version 4, Src: X.X.X.X, Dst: 10.0.2.15
Transmission Control Protocol, Src Port: 631, Dst Port: 41348, Seq: 33921, Ack: 3318, Len: 556
Hypertext Transfer Protocol
Line-based text data: text/html
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">\n
    <HTML>\n
    <HEAD>\n
    \t<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=utf-8">\n
    \t<TITLE>400 Bad Request</TITLE>\n
    \t<LINK REL="STYLESHEET" TYPE="text/css" HREF="/cups.css">\n
    </HEAD>\n
    <BODY>\n
    <H1>400 Bad Request</H1>\n
    <P></P>\n
    </BODY>\n
    </HTML>\n

michaelrsweet · 2018-01-11T15:53:33Z

Hmm, will investigate but the code that sets the default IPP version hasn't changed in a long long time...

michaelrsweet · 2018-01-11T16:11:05Z

OK, I've confirmed that lp is ignoring the server version; investigating...

michaelrsweet · 2018-01-11T16:21:52Z

OK, the issue appears to be that the cupsCreateJob API now redirects to cupsCreateDestJob, which uses the destination information which tells it to use IPP/2.0... And that is because the cupsCopyDestInfo assumes that the initial version is 2.0, not 1.1... :/

Fix coming up...

cups/dest-options.c: - Fix IPP version check in cupsCopyDestInfo.

michaelrsweet · 2018-01-11T16:32:48Z

[master 6a3d63e] Printing to old CUPS servers has been fixed (Issue #5211)

swbil · 2018-01-21T09:21:13Z

Dear @michaelrsweet, thanks for the fix, but the bug (IPP 2.0) moves now to Get-Printer-Attributes
and stop from there. We don't see IPP Request (Create-Job) any more.

Can you check it, pls?

234	12.500032285	X.X.X.X	10.0.2.16	IPP	547	IPP Response (successful-ok)
Internet Printing Protocol
    [Request In: 209]
    [Response Time: 0.003834289 seconds]
    version: 1.1
    status-code: Successful (successful-ok)
    request-id: 3
    operation-attributes-tag
    printer-attributes-tag
...
    printer-attributes-tag
    end-of-attributes-tag

237	12.501271103	10.0.2.16	X.X.X.X	IPP	308	IPP Request (Get-Printer-Attributes)
Frame 237: 308 bytes on wire (2464 bits), 308 bytes captured (2464 bits) on interface 0
Ethernet II, Src: LcfcHefe_7d:a8:3a (28:d2:44:7d:a8:3a), Dst: Cisco_ff:fd:90 (00:08:e3:ff:fd:90)
Internet Protocol Version 4, Src: 10.0.2.16, Dst: X.X.X.X
Transmission Control Protocol, Src Port: 38386, Dst Port: 631, Seq: 2409, Ack: 28555, Len: 242
[2 Reassembled TCP Segments (475 bytes): #236(233), #237(242)]
Hypertext Transfer Protocol
Internet Printing Protocol
    version: 2.0
    operation-id: Get-Printer-Attributes (0x000b)
    request-id: 4
    operation-attributes-tag
    end-of-attributes-tag

239	12.501458646	X.X.X.X	10.0.2.16	HTTP	622	HTTP/1.1 400 Bad Request  (text/html)
Frame 239: 622 bytes on wire (4976 bits), 622 bytes captured (4976 bits) on interface 0
Ethernet II, Src: Cisco_ff:fd:90 (00:08:e3:ff:fd:90), Dst: LcfcHefe_7d:a8:3a (28:d2:44:7d:a8:3a)
Internet Protocol Version 4, Src: X.X.X.X, Dst: 10.0.2.16
Transmission Control Protocol, Src Port: 631, Dst Port: 38386, Seq: 28580, Ack: 2651, Len: 556
Hypertext Transfer Protocol
Line-based text data: text/html
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">\n
    <HTML>\n
    <HEAD>\n
    \t<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=utf-8">\n
    \t<TITLE>400 Bad Request</TITLE>\n
    \t<LINK REL="STYLESHEET" TYPE="text/css" HREF="/cups.css">\n
    </HEAD>\n
    <BODY>\n
    <H1>400 Bad Request</H1>\n
    <P></P>\n
    </BODY>\n
    </HTML>\n

swbil · 2018-01-23T14:49:28Z

Dear @michaelrsweet,

it works if I make a quick and dirty change at line 716 in cups/dest-options.c from cups-2.3b2-source.tar.gz

-  version    = 20;
+  version    = 11;

swbil · 2018-01-31T17:08:18Z

Hi @michaelrsweet, I can't reopen this issue. Can you reopen for me, please?

michaelrsweet · 2018-01-31T18:39:38Z

That change won't work since 1.1 clients don't get collection attributes.

Reopening while I determine why the negotiated version number isn't being used.

michaelrsweet · 2018-02-01T00:32:32Z

[master b969d5a] Fix additional IPP/1.1 issues with cupsCopyDestInfo (Issue #5211)

michaelrsweet · 2018-02-01T01:21:59Z

[master 27551f0] One more fix for _cupsGetDestResource (Issue #5211)

Update ippserver to support maximum version option (-V max-version) Update cupsCopyDestInfo to recognize when we are talking to the CUPS server and when we are talking to the device (so we get the right URI for the printer) Add "--device" option to testdest.

- Fixed a compile issue when PAM is not available (Issue #5253) - Documentation fixes (Issue #5252) - Star Micronics printers need the "unidir" USB quirk rule (Issue #5251) - The scheduler now supports using temporary print queues for older IPP/1.1 print queues like those shared by CUPS 1.3 and earlier (Issue #5241) - The `cupsRasterWritePixels` function did not correctly swap bytes for some formats (Issue #5225) - Added a USB quirk rule for Canon MP280 series printers (Issue #5221) - The `ppdInstallableConflict` tested too many constraints (Issue #5213) - More fixes for printing to old CUPS servers (Issue #5211) - The `cupsCopyDest` function now correctly copies the `is_default` value (Issue #5208) - The scheduler did not work with older versions of uClibc (Issue #5188) - The scheduler now substitutes default values for invalid job attributes when running in "relaxed conformance" mode (Issue #5186) - Fixed PAM module detection and added support for the common PAM definitions (Issue #5185) - Fixed a journald support bug in the scheduler (Issue #5181) - The cups-driverd program incorrectly stopped scanning PPDs as soon as a loop was seen (Issue #5170) - Fixed group validation on OpenBSD (Issue #5166) - Fixed the `ippserver` sample code when threading is disabled or unavailable (Issue #5154) - The `cupsEnumDests` function did not include options from the lpoptions files (Issue #5144) - The `SSLOptions` directive now supports `MinTLS` and `MaxTLS` options to control the minimum and maximum TLS versions that will be allowed, respectively (Issue #5119) - The scheduler did not write out dirty configuration and state files if there were open client connections (Issue #5118) - The `lpadmin` command now provides a better error message when an unsupported System V interface script is used (Issue #5111) - The `lp` and `lpr` commands now provide better error messages when the default printer cannot be found (Issue #5096) - No longer support backslash, question mark, or quotes in printer names (Issue #4966) - The CUPS library now supports the latest HTTP Digest authentication specification including support for SHA-256 (Issue #4862) - The `lpstat` command now reports when new jobs are being held (Issue #4761) - The `lpoptions` command incorrectly saved default options (Issue #4717) - The `ppdLocalizeIPPReason` function incorrectly returned a localized version of "none" (rdar://36566269) - TLS connections now properly timeout (rdar://34938533) - The IPP backend did not properly detect failed PDF prints (rdar://34055474)

michaelrsweet self-assigned this Jan 8, 2018

michaelrsweet added the investigating Investigating the issue label Jan 8, 2018

michaelrsweet added this to the CUPS 2.3.x milestone Jan 11, 2018

michaelrsweet added priority-high and removed investigating Investigating the issue labels Jan 11, 2018

michaelrsweet pushed a commit that referenced this issue Jan 11, 2018

Printing to old CUPS servers has been fixed (Issue #5211)

6a3d63e

cups/dest-options.c: - Fix IPP version check in cupsCopyDestInfo.

michaelrsweet closed this as completed Jan 11, 2018

michaelrsweet reopened this Jan 31, 2018

michaelrsweet closed this as completed Feb 1, 2018

michaelrsweet added a commit that referenced this issue Feb 1, 2018

One more fix for _cupsGetDestResource (Issue #5211)

27551f0

michaelrsweet mentioned this issue Feb 26, 2018

Back port important CUPS 2.3.x changes to 2.2.x #5255

Closed

rcoss mentioned this issue May 28, 2019

Backporting patch for #5211 to 2.2.7 #5587

Closed

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lp: Bad Request #5211

lp: Bad Request #5211

swbil commented Jan 2, 2018 •

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lp: Bad Request #5211

lp: Bad Request #5211

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