Wireshark · Wireshark-dev: Re: [Wireshark-dev] Create dissctor groups to easily dissable unneded protocols.

[chuck c <bubbasnmp@xxxxxxxxx>]

The Frame protocol (and a dozen others) can not be disabled:

 /* You can't disable dissection of "Frame", as that would be
  tantamount to not doing any dissection whatsoever. */
proto_set_cant_toggle(proto_frame);

Would there be a group that lists these?

On Wed, Oct 21, 2020 at 9:34 AM Anders Broman via Wireshark-dev <wireshark-dev@xxxxxxxxxxxxx> wrote:

Hi,

In the developers den we discussed the possibility of disabling unneeded protocols and I brought up the idea of protocol groups. If there is interest in this feature

I would need help with the GUI part – volunteers? As a PoC I was thinking of something along these lines.

Turn all protocols of – enable the group “basic” which would then be the basic protocols you would need in most cases like

Ethernet -VLAN-IP4/IPv6-TCP UDP SCTP ICMP ICMP6 ARP more? We don’t need a comprehensive list here and now these might do for the PoC.

Once the basic group is there we might start to look at large groups of specialized protocols most people would want to turn off like

USB Bluetooth ZigeBee, telco(?) might be candidates.

 

This would be the API to register in a group, only allowed group names(we make list) to be accepted at registry time, possibly

Have a register group name routine? But the poc may not have to be more complicated than this.

--- a/epan/proto.c

+++ b/epan/proto.c

@@ -343,21 +343,22 @@ static header_field_info hfi_text_only =

        { "Text item",  "text", FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL };

int hf_text_only = -1;

 

-/* Structure for information about a protocol */

+/** Structure for information about a protocol */

struct _protocol {

-       const char *name;               /* long description */

-       const char *short_name;         /* short description */

-       const char *filter_name;        /* name of this protocol in filters */

-       GPtrArray  *fields;             /* fields for this protocol */

-       int         proto_id;           /* field ID for this protocol */

-       gboolean    is_enabled;         /* TRUE if protocol is enabled */

-       gboolean    enabled_by_default; /* TRUE if protocol is enabled by default */

-       gboolean    can_toggle;         /* TRUE if is_enabled can be changed */

-       int         parent_proto_id;    /* Used to identify "pino"s (Protocol In Name Only).

+       const char *name;               /**< long description */

+       const char *short_name;         /**< short description */

+       const char *filter_name;        /**< name of this protocol in filters */

+       const char* group_name;         /**< name of the "group" this protocol belongs to */

+       GPtrArray  *fields;             /**< fields for this protocol */

+       int         proto_id;           /**< field ID for this protocol */

+       gboolean    is_enabled;         /**< TRUE if protocol is enabled */

+       gboolean    enabled_by_default; /**< TRUE if protocol is enabled by default */

+       gboolean    can_toggle;         /**< TRUE if is_enabled can be changed */

+       int         parent_proto_id;    /**< Used to identify "pino"s (Protocol In Name Only).

                                        For dissectors that need a protocol name so they

                                        can be added to a dissector table, but use the

                                        parent_proto_id for things like enable/disable */

-       GList      *heur_list;          /* Heuristic dissectors associated with this protocol */

+       GList      *heur_list;          /**< Heuristic dissectors associated with this protocol */

};

 

/* List of all protocols */

@@ -7208,8 +7209,14 @@ check_valid_filter_name_or_fail(const char *filter_name)

}

 

int

-proto_register_protocol(const char *name, const char *short_name,

-                       const char *filter_name)

+proto_register_protocol(const char* name, const char* short_name, const char* filter_name)

+{

+       return proto_register_protocol_and_group(name, short_name, filter_name, NULL);

+}

+

+int

+proto_register_protocol_and_group(const char *name, const char *short_name,

+                       const char *filter_name, const char* group_name)

{

        protocol_t *protocol;

        header_field_info *hfinfo;

@@ -7248,6 +7255,7 @@ proto_register_protocol(const char *name, const char *short_name,

       protocol->name = name;

        protocol->short_name = short_name;

        protocol->filter_name = filter_name;

+       protocol->group_name = group_name;

        protocol->fields = NULL; /* Delegate until actually needed */

        protocol->is_enabled = TRUE; /* protocol is enabled by default */

        protocol->enabled_by_default = TRUE; /* see previous comment */

diff --git a/epan/proto.h b/epan/proto.h

index 679cb6989c..fa63c9d9de 100644

--- a/epan/proto.h

+++ b/epan/proto.h

@@ -2371,6 +2371,14 @@ proto_item_fill_label(field_info *fi, gchar *label_str);

WS_DLL_PUBLIC int

proto_register_protocol(const char *name, const char *short_name, const char *filter_name);

 

+/** Register a new protocol with group association.

+ @param name the full name of the new protocol

+ @param short_name abbreviated name of the new protocol

+ @param filter_name protocol name used for a display filter string

+ @param group_name the group the protocol belongs to. Grops are used to enable/dissable sets of protocols

+ @return the new protocol handle */

+WS_DLL_PUBLIC int

+proto_register_protocol_and_group(const char* name, const char* short_name, const char* filter_name, const char* group_name);

/** Register a "helper" protocol (pino - protocol in name only).

  This is for dissectors that need distinguishing names and don't need the other

  features (like enable/disable).  One use case is a protocol with multiple dissection

 

Comments?

 

Regards

Anders

 

___________________________________________________________________________
Sent via:    Wireshark-dev mailing list <wireshark-dev@xxxxxxxxxxxxx>
Archives:    https://www.wireshark.org/lists/wireshark-dev
Unsubscribe: https://www.wireshark.org/mailman/options/wireshark-dev
             mailto:wireshark-dev-request@xxxxxxxxxxxxx?subject=unsubscribe