> Do you use ssl_bump rules to decode affected HTTPS traffic? Or is your service supposed to analyze plain HTTP CONNECT requests?
We don't use ssl_bump, icap service only analyze HTTP CONNECT requests
I just compared the debug logs between http and https request and the icap service is contacted in both case and reply in both case with a deny.
But just after the deny reply in https log I found theses lines :
2024/02/02 17:40:41.943 kid1| 93,3| ../../../src/base/AsyncJobCalls.h(177) dial: Adaptation::Icap::Xaction::noteCommRead threw exception: check failed: readBuf.isEmpty()
exception location: ModXact.cc(1219) stopParsing
2024/02/02 17:40:41.943 kid1| 93,3| ModXact.cc(679) callException: bypassing 0x558f358fdae0*2 exception: check failed: readBuf.isEmpty()
exception location: ModXact.cc(1219) stopParsing [FD 17;rp(1)S(2)YG/Rw job17]
2024/02/02 17:40:41.943 kid1| 93,7| ModXact.cc(720) disableBypass: will never start bypass because already started to bypass
2024/02/02 17:40:41.943 kid1| 93,5| Xaction.cc(127) disableRepeats: Adaptation::Icap::ModXact still cannot be repeated because preparing to echo content [FD 17;rp(1)S(2)G/Rw job17]
2024/02/02 17:40:41.943 kid1| 93,7| ModXact.cc(724) disableBypass: not protecting group bypass because preparing to echo content
2024/02/02 17:40:41.943 kid1| 93,3| Xaction.cc(564) setOutcome: WARNING: resetting outcome: from ICAP_SAT to ICAP_ECHO
2024/02/02 17:40:41.943 kid1| 93,7| ModXact.cc(962) prepEchoing: cloning virgin message 0x558f358ff040
2024/02/02 17:40:41.943 kid1| 93,3| Xaction.cc(564) setOutcome: WARNING: resetting outcome: from ICAP_ECHO to ICAP_ERR_OTHER
2024/02/02 17:40:41.943 kid1| 93,4| ServiceRep.cc(97) noteFailure: failure 1 out of 10 allowed in 0sec [up,fail1]
2024/02/02 17:40:41.943 kid1| 93,2| AsyncJob.cc(130) callException: check failed: !adapted.header
exception location: ModXact.cc(971) prepEchoing
2024/02/02 17:40:41.943 kid1| 93,5| AsyncJob.cc(85) mustStop: Adaptation::Icap::ModXact will stop, reason: exception
2024/02/02 17:40:41.943 kid1| 93,5| AsyncJob.cc(140) callEnd: Adaptation::Icap::Xaction::noteCommRead(conn8 local=X.X.X.X:46704 remote=X.X.X.X:1344 FD 17 flags=1, data=0x558f358fe888) ends job [FD 17;rp(1)S(2)/StoppedRw job17]
2024/02/02 17:40:41.943 kid1| 93,5| ModXact.cc(1295) swanSong: swan sings [FD 17;rp(1)S(2)/StoppedRw job17]
2024/02/02 17:40:41.943 kid1| 93,7| ModXact.cc(616) stopSending: Enter stop sending
2024/02/02 17:40:41.943 kid1| 93,7| ModXact.cc(619) stopSending: Proceed with stop sending
It seems to bypass because something gone wrong.
Yvain PAYEN
Pôle Opérations & Technologies
Equipe Infrastructure système
T. +33 (0)5 57 57 01 85 (Poste 1185)
M. +33 (0)7 87 30 34 01
Absent tous les mercredi
Tessi France
Immeuble Cassiopée
1-3 avenue des Satellites
33185 Le Haillan
Pensez à l'environnement avant d'imprimer cet e-mail.
-----Message d'origine-----
De : squid-users <squid-users-bounces@xxxxxxxxxxxxxxxxxxxxx> De la part de Alex Rousskov
Envoyé : vendredi 2 février 2024 17:19
À : squid-users@xxxxxxxxxxxxxxxxxxxxx
Objet : Re: external icap issue with squid 5 and higher
⚠ FR : Ce message provient de l'extérieur de l'organisation. N'ouvrez pas de liens ou de pièces jointes à moins que vous ne sachiez que le contenu est fiable. ⚠
On 2024-02-02 11:00, Yvain PAYEN wrote:
> Hi Squid users,
>
> I have an issue with an external icap service I have to use (from
> Forcepoint).
>
> This service is working great with squid v3 and v4.
>
> Starting v5 (v6 also tested) the service only work with plain text
> http requests, all requests for https content are allowed even if the
> website should be denied.
Do you use ssl_bump rules to decode affected HTTPS traffic? Or is your service supposed to analyze plain HTTP CONNECT requests?
With Squid v6, does your ICAP service actually receive expected "requests for https content" for analysis from Squid? Or does Squid allow them without contacting the ICAP service with those requests? You can check service logs and/or enable icap.log in Squid to answer these high-level questions (see icap_log).
> My first question is : do you know if a big change in the icap code
> happened between v4 and v5 ?
I do not recall, unfortunately; it was too long ago. Please keep in mind that your problems may not be triggered by ICAP code changes (if any).
> My second question : How can I trace only icap debug logs
ICAP code uses debug section 93. See debug_options directive and docs/debug-sections.txt.
HTH,
Alex.
> Service is setup like this :
>
> icap_service service_req reqmod_precache icap://10.1.1.1:1344/icap
> bypass=1
>
> Regards,
>
> *Yvain PAYEN*
>
> *
> **Pôle Opérations & Technologies
> *Equipe Infrastructure système
> T. +33 (0)5 57 57 01 85 (Poste 1185)
>
> M. +33 (0)7 87 30 34 01
>
> Absent tous les mercredi
>
>
> Tessi France
> Immeuble Cassiopée
>
> 1-3 avenue des Satellites
> 33185 Le Haillan
>
>
> *yvain.payen@xxxxxxxx <mailto:yvain.payen@xxxxxxxx> www.tessi.eu
> <www.tessi.eu>
> ***
> Pensez à l'environnement avant d'imprimer cet e-mail.**
>
>
> _______________________________________________
> squid-users mailing list
> squid-users@xxxxxxxxxxxxxxxxxxxxx
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