[Snort-users] Snort missing C99 patch

Terry John Terry.John at ...16850...
Fri Nov 21 12:51:05 EST 2014


Thanks for that. I had already updated the daq. Sorry I omitted to say that in my original post.

I think I have found a workaround now. I posted it a couple of minutes ago.

cd  /usr/local/include/
rm daq.h  daq_api.h  daq_common.h  sfbpf.h  sfbpf_dlt.h

I think the rpm build should be able to remove previous rpm build files if they are no longer needed. Perhaps this hasn't been considered yet.

Terry

From: Michael Altizer [mailto:mialtize at ...589...]
Sent: 21 November 2014 17:27
To: snort-users at lists.sourceforge.net
Subject: Re: [Snort-users] Snort missing C99 patch

Sounds like the DAQ library you have is an alpha/beta version, which is what that check was put in to detect (it has the new function, but an old version of the struct definition).  If you look at daq_common.h, you should see that the DAQ_DP_key_t structure looks like this:

typedef struct _DAQ_DP_key_t {
    uint32_t af;                /* AF_INET or AF_INET6 */
    union {
        struct in_addr src_ip4;
        struct in6_addr src_ip6;
    } sa;
    union {
        struct in_addr dst_ip4;
        struct in6_addr dst_ip6;
    } da;
    uint8_t protocol;           /* TCP or UDP (IPPROTO_TCP or IPPROTO_UDP )*/
    uint16_t src_port;          /* TCP/UDP source port */
    uint16_t dst_port;          /* TCP/UDP destination port */
    uint16_t address_space_id;  /* Address Space ID */
    uint16_t tunnel_type;       /* Tunnel type */
    uint16_t vlan_id;           /* VLAN ID */
    uint16_t vlan_cnots;
} DAQ_DP_key_t;

Note the named 'sa' and 'da' unions.  If it doesn't look like that, you need to update with the final version of libdaq 2.0.4, which is available on the snort.org website.  I just verified that the src.rpm there has the right version of the headers.

On 11/21/2014 11:16 AM, Terry John wrote:
I'm trying to update an existing 2.9.6.0 version of snort on Centos 6.5. I was disappointed to see that Snort no longer provides RPM's for Centos 6 so I rpmbuilt my own from the src.rpm files.

That daq built ok but the snort still insisted on looking for the old libdnet v 1.11 so I decided to compile from source using snort-2.9.7.0.tar.gz .

I did a yum update on the daq and that seems ok. But when I did a ./configure -enable-sourcefire as suggested in the setup guide (https://www.snort.org/documents/4) I got the error:

checking for daq_dp_add_dc... yes
checking for struct _DAQ_DP_key_t.sa.src_ip4... no

   ERROR!  daq library missing C99 patch, upgrade to >=2.0.4, go get it from
   http://www.snort.org/.

>From a clean install on a virtualbox using the same daq rpm snort compiles fine. Could t be a problem that the daq RPM can't do a clean update on an existing system?

Thanks

Terry



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