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Today's Topics:

   1. Re: [PATCH 1/2] openconnect: Use C locale with screen scraping
      (David Woodhouse)
   2. Re: [PATCH 2/2] Rewrite openconnect plugin to use libopenconnect
      (David Woodhouse)
   3. Re: [PATCH 08/11] provider: Toggle IPv6 on the transport of IPv4 VPN 
connection
      (Jussi Laakkonen)


----------------------------------------------------------------------

Date: Tue, 06 Apr 2021 14:33:13 +0100
From: David Woodhouse <dw...@infradead.org>
Subject: Re: [PATCH 1/2] openconnect: Use C locale with screen
        scraping
To: Santtu Lakkala <santtu.lakk...@jolla.com>, connman@lists.01.org
Cc: Jussi Laakkonen <jussi.laakko...@jolla.com>
Message-ID:
        <afeb54a6dacc7467d482281d393a252b3ed7fb1a.ca...@infradead.org>
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On Tue, 2021-04-06 at 15:35 +0300, Santtu Lakkala wrote:
> From: Jussi Laakkonen <jussi.laakko...@jolla.com>
>=20
> Use C locale in the OpenConnect VPN plugin for the task because screen
> scraping is used to get information on the process. This is required
> because when the user is changed to other than root the translations are
> enabled if language settings define so.

Is this still needed once your second patch fixes it to use
libopenconnect for authentication? Do you still actually need to do any
screen scraping?

You seem to have a hard-coded list of protocols in openconnect.c which
is out of date, btw.

You should use openconnect_get_supported_protocols() for that instead
of hard-coding it.

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------------------------------

Date: Tue, 06 Apr 2021 14:41:22 +0100
From: David Woodhouse <dw...@infradead.org>
Subject: Re: [PATCH 2/2] Rewrite openconnect plugin to use
        libopenconnect
To: Santtu Lakkala <santtu.lakk...@jolla.com>, connman@lists.01.org
Message-ID:
        <c3fe34587f3e8ae3d0ada85ae3b0bc78f6e438f2.ca...@infradead.org>
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On Tue, 2021-04-06 at 15:35 +0300, Santtu Lakkala wrote:
> --- a/configure.ac
> +++ b/configure.ac
> @@ -82,6 +82,8 @@ if (test "${enable_openconnect}" !=3D "no"); then
>                 OPENCONNECT=3D"${path_openconnect}"
>                 AC_SUBST(OPENCONNECT)
>         fi
> +       PKG_CHECK_MODULES(LIBOPENCONNECT, openconnect >=3D 4, [],
> +               AC_MSG_ERROR(openconnect >=3D 4 is required))
>  fi
>  AM_CONDITIONAL(OPENCONNECT, test "${enable_openconnect}" !=3D "no")
>  AM_CONDITIONAL(OPENCONNECT_BUILTIN, test "${enable_openconnect}" =3D "bu=
iltin")

That's an interesting choice. OpenConnect v4.00 was released in June
2012, with API version 2.0 (libopenconnect.so.2).

If you want to work with a version that old, then the hard-coded list
of protocols I just commented on is *definitely* not correct since we
didn't support anything except AnyConnect back then.

And if you're going to use openconnect_get_supported_protocols() as I
suggested, you'll want at least v8.0 (from January 2019).




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--=-aWnQzTORddiRSuNjTAua--

------------------------------

Date: Tue, 6 Apr 2021 16:44:00 +0300
From: Jussi Laakkonen <jussi.laakko...@jolla.com>
Subject: Re: [PATCH 08/11] provider: Toggle IPv6 on the transport of
        IPv4 VPN connection
To: Daniel Wagner <w...@monom.org>
Cc: connman@lists.01.org
Message-ID: <ad93c096-e9f8-58f2-615f-6141a4ea8...@jolla.com>
Content-Type: text/plain; charset=utf-8; format=flowed

Hi Daniel,

On 4/5/21 5:40 PM, Daniel Wagner wrote:
> On Thu, Apr 01, 2021 at 05:46:15PM +0300, Jussi Laakkonen wrote:
>>   static int provider_indicate_state(struct connman_provider *provider,
>>                                      enum connman_service_state state)
>>   {
>> +    int err;
>> +
>>      DBG("state %d", state);
>>   
>> +    switch (state) {
>> +    case CONNMAN_SERVICE_STATE_UNKNOWN:
>> +    case CONNMAN_SERVICE_STATE_IDLE:
>> +    case CONNMAN_SERVICE_STATE_ASSOCIATION:
>> +    case CONNMAN_SERVICE_STATE_CONFIGURATION:
>> +            break;
>> +    case CONNMAN_SERVICE_STATE_READY:
>> +    case CONNMAN_SERVICE_STATE_ONLINE:
>> +            if (provider->family != AF_INET)
>> +                    break;
>> +
>> +            err = __connman_provider_set_ipv6_for_connected(provider,
>> +                                                                    false);
>> +            if (err && err != -EALREADY)
>> +                    DBG("cannot disable IPv6 on provider %p transport",
>> +                                                            provider);
>> +            break;
> 
> This disables IPv6 for all VPN tunnels not just for pure IPv4 VPNs. I
> think you need to check the ipconfig if IPv6 should be disabled. I have
> actually an IPv4/IPv6 VPN service to test ;)
> 

Oh I must have mistaken something then. I've always understood this that 
each provider can be either IPv4 or IPv6 as the code suggests, and one 
provider = one connection. Or did I now misread your comment..

Yeah, this is one of the things why I first sent the RFC. We do limit to 
having only one connected VPN at a time so I wasn't able to test all 
possible scenarios. There is a check for split routing of the VPN, the 
change is not done if the VPN is not going to be the default, i.e., 
split routing is true. But I guess you weren't after this.

I did confuse myself with this a multiple times already.. So instead of 
relying to provider family there should be a check on which ipconfigs 
the actual VPN service has enabled? I wasn't aware that it was possible 
to work that way as I relied on the family setting. Well, I haven't had 
any VPNs configured as dual-stack either.

I guess that family for the provider should be somehow changed/extended 
to support that as well.


- Jussi

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