diff options
author | Anders Broman <anders.broman@ericsson.com> | 2008-10-06 20:24:02 +0000 |
---|---|---|
committer | Anders Broman <anders.broman@ericsson.com> | 2008-10-06 20:24:02 +0000 |
commit | 1f25f93a07c6b96b834ddb70c41ef9950fe26844 (patch) | |
tree | 94b86c376b7f65b7ce31592992e5b736bd4c0d3e /epan/dissectors/packet-bat.c | |
parent | cee238507dcab4aaaf6cd9aea99db6c1eac01979 (diff) |
From Sven Eckelmann:
B.A.T.M.A.N. dissector consists of many source files
svn path=/trunk/; revision=26362
Diffstat (limited to 'epan/dissectors/packet-bat.c')
-rw-r--r-- | epan/dissectors/packet-bat.c | 851 |
1 files changed, 840 insertions, 11 deletions
diff --git a/epan/dissectors/packet-bat.c b/epan/dissectors/packet-bat.c index f01ee88e2e..aafc3f72b5 100644 --- a/epan/dissectors/packet-bat.c +++ b/epan/dissectors/packet-bat.c @@ -23,21 +23,817 @@ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include <epan/packet.h> +#include <epan/prefs.h> +#include <epan/tap.h> +#include <epan/addr_resolv.h> + #include "packet-bat.h" +/* trees */ +static gint ett_bat_batman = -1; +static gint ett_bat_batman_flags = -1; +static gint ett_bat_batman_gwflags = -1; +static gint ett_bat_batman_hna = -1; +static gint ett_bat_gw = -1; +static gint ett_bat_vis = -1; +static gint ett_bat_vis_entry = -1; + +/* hfs */ +static int hf_bat_batman_version = -1; +static int hf_bat_batman_flags = -1; +static int hf_bat_batman_ttl = -1; +static int hf_bat_batman_gwflags = -1; +static int hf_bat_batman_seqno = -1; +static int hf_bat_batman_gwport = -1; +static int hf_bat_batman_orig = -1; +static int hf_bat_batman_old_orig = -1; +static int hf_bat_batman_tq = -1; +static int hf_bat_batman_hna_len = -1; +static int hf_bat_batman_hna_network = -1; +static int hf_bat_batman_hna_netmask = -1; + +static int hf_bat_gw_type = -1; +static int hf_bat_gw_ip = -1; + +static int hf_bat_vis_vis_orig = -1; +static int hf_bat_vis_version = -1; +static int hf_bat_vis_gwflags = -1; +static int hf_bat_max_tq_v22 = -1; +static int hf_bat_max_tq_v23 = -1; +static int hf_bat_vis_data_type = -1; +static int hf_bat_vis_netmask = -1; +static int hf_bat_vis_tq_v22 = -1; +static int hf_bat_vis_tq_v23 = -1; +static int hf_bat_vis_data_ip = -1; + +/* flags */ +static int hf_bat_batman_flags_unidirectional = -1; +static int hf_bat_batman_flags_directlink = -1; + +static const value_string gw_packettypenames[] = { + { TUNNEL_DATA, "DATA" }, + { TUNNEL_IP_REQUEST, "IP_REQUEST" }, + { TUNNEL_IP_INVALID, "IP_INVALID" }, + { TUNNEL_KEEPALIVE_REQUEST, "KEEPALIVE_REQUEST" }, + { TUNNEL_KEEPALIVE_REPLY, "KEEPALIVE_REPLY" }, + { 0, NULL } +}; + +static const value_string vis_packettypenames[] = { + { DATA_TYPE_NEIGH, "NEIGH" }, + { DATA_TYPE_SEC_IF, "SEC_IF" }, + { DATA_TYPE_HNA, "HNA" }, + { 0, NULL } +}; + /* forward declaration */ void proto_register_bat(void); void proto_reg_handoff_bat(void); -int proto_bat_plugin = -1; -module_t *bat_module = NULL; +/* supported packet dissectors */ +/* supported packet dissectors */ +static void dissect_bat_batman(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree); +static void dissect_bat_batman_v5(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree); + +static void dissect_bat_gw(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree); + +static void dissect_bat_vis(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree); +static void dissect_bat_vis_v22(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree); +static void dissect_vis_entry_v22(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree); +static void dissect_bat_vis_v23(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree); +static void dissect_vis_entry_v23(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree); + +static void dissect_bat_hna(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree); + +/* other dissectors */ +static dissector_handle_t ip_handle; +static dissector_handle_t data_handle; + +static int proto_bat_plugin = -1; /* tap */ -int bat_tap = -1; -int bat_follow_tap = -1; +static int bat_tap = -1; +static int bat_follow_tap = -1; + +/* values changed by preferences */ +static guint global_bat_batman_udp_port = BAT_BATMAN_PORT; +static guint global_bat_gw_udp_port = BAT_GW_PORT; +static guint global_bat_vis_udp_port = BAT_VIS_PORT; + + + +static void dissect_bat_batman(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + guint8 version; + + /* set protocol name */ + if (check_col(pinfo->cinfo, COL_PROTOCOL)) { + col_set_str(pinfo->cinfo, COL_PROTOCOL, "BAT_BATMAN"); + } + + version = tvb_get_guint8(tvb, 0); + switch (version) { + case 5: + dissect_bat_batman_v5(tvb, pinfo, tree); + break; + default: + if (check_col(pinfo->cinfo, COL_INFO)) { + col_clear(pinfo->cinfo, COL_INFO); + col_append_fstr(pinfo->cinfo, COL_INFO, "Unsupported Version %d", version); + } + call_dissector(data_handle, tvb, pinfo, tree); + break; + } +} + +static void dissect_bat_gwflags(tvbuff_t *tvb, guint8 gwflags, int offset, proto_item *tgw) +{ + proto_tree *gwflags_tree; + guint8 s = (gwflags & 0x80) >> 7; + guint8 downbits = (gwflags & 0x7C) >> 3; + guint8 upbits = (gwflags & 0x07); + guint down, up; + + down = 32 * (s + 2) * (1 << downbits); + up = ((upbits + 1) * down) / 8; + + gwflags_tree = proto_item_add_subtree(tgw, ett_bat_batman_gwflags); + proto_tree_add_text(gwflags_tree, tvb, offset, 1, "Download Speed: %dkbit", down); + proto_tree_add_text(gwflags_tree, tvb, offset, 1, "Upload Speed: %dkbit", up); + +} + +static void dissect_bat_batman_v5(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + struct batman_packet_v5 *batman_packeth; + const guint8 *old_orig_addr, *orig_addr; + guint32 old_orig, orig; + gint i; + + tvbuff_t *next_tvb; + guint length_remaining; + int offset = 0; + + batman_packeth = ep_alloc(sizeof(struct batman_packet_v5)); + + batman_packeth->version = tvb_get_guint8(tvb, 0); + batman_packeth->flags = tvb_get_guint8(tvb, 1); + batman_packeth->ttl = tvb_get_guint8(tvb, 2); + batman_packeth->gwflags = tvb_get_guint8(tvb, 3); + batman_packeth->seqno = tvb_get_ntohs(tvb, 4); + batman_packeth->gwport = tvb_get_ntohs(tvb, 6); + orig_addr = tvb_get_ptr(tvb, 8, 4); + orig = tvb_get_ipv4(tvb, 8); + SET_ADDRESS(&batman_packeth->orig, AT_IPv4, 4, orig_addr); + old_orig_addr = tvb_get_ptr(tvb, 12, 4); + old_orig = tvb_get_ipv4(tvb, 12); + SET_ADDRESS(&batman_packeth->old_orig, AT_IPv4, 4, old_orig_addr); + batman_packeth->tq = tvb_get_guint8(tvb, 16); + batman_packeth->hna_len = tvb_get_guint8(tvb, 17); + + /* Set info column */ + if (check_col(pinfo->cinfo, COL_INFO)) { + col_clear(pinfo->cinfo, COL_INFO); + col_append_fstr(pinfo->cinfo, COL_INFO, "Seq=%u", + batman_packeth->seqno); + } + + /* Set tree info */ + if (tree) { + proto_item *ti = NULL, *tf, *tgw; + proto_tree *bat_batman_tree = NULL, *flag_tree = NULL; + + if (PTREE_DATA(tree)->visible) { + ti = proto_tree_add_protocol_format(tree, proto_bat_plugin, tvb, 0, BATMAN_PACKET_V5_SIZE, + "B.A.T.M.A.N., Orig: %s (%s)", + get_hostname(orig), ip_to_str(batman_packeth->orig.data)); + } else { + ti = proto_tree_add_item(tree, proto_bat_plugin, tvb, 0, BATMAN_PACKET_V5_SIZE, FALSE); + } + bat_batman_tree = proto_item_add_subtree(ti, ett_bat_batman); + + /* items */ + proto_tree_add_item(bat_batman_tree, hf_bat_batman_version, tvb, offset, 1, FALSE); + offset += 1; + + tf = proto_tree_add_item(bat_batman_tree, hf_bat_batman_flags, tvb, offset, 1, FALSE); + /* <flags> */ + flag_tree = proto_item_add_subtree(tf, ett_bat_batman_flags); + proto_tree_add_boolean(flag_tree, hf_bat_batman_flags_unidirectional, tvb, offset, 1, batman_packeth->flags); + proto_tree_add_boolean(flag_tree, hf_bat_batman_flags_directlink, tvb, offset, 1, batman_packeth->flags); + /* </flags> */ + offset += 1; + + proto_tree_add_item(bat_batman_tree, hf_bat_batman_ttl, tvb, offset, 1, FALSE); + offset += 1; + + tgw = proto_tree_add_item(bat_batman_tree, hf_bat_batman_gwflags, tvb, offset, 1, FALSE); + dissect_bat_gwflags(tvb, batman_packeth->gwflags, offset, tgw); + offset += 1; + + proto_tree_add_item(bat_batman_tree, hf_bat_batman_seqno, tvb, offset, 2, FALSE); + offset += 2; + + proto_tree_add_item(bat_batman_tree, hf_bat_batman_gwport, tvb, offset, 2, FALSE); + offset += 2; + + proto_tree_add_ipv4(bat_batman_tree, hf_bat_batman_orig, tvb, offset, 4, orig); + offset += 4; + + proto_tree_add_ipv4(bat_batman_tree, hf_bat_batman_old_orig, tvb, offset, 4, old_orig); + offset += 4; + + proto_tree_add_item(bat_batman_tree, hf_bat_batman_tq, tvb, offset, 1, FALSE); + offset += 1; + + proto_tree_add_item(bat_batman_tree, hf_bat_batman_hna_len, tvb, offset, 1, FALSE); + offset += 1; + } + + tap_queue_packet(bat_tap, pinfo, batman_packeth); + + for (i = 0; i < batman_packeth->hna_len; i++) { + next_tvb = tvb_new_subset(tvb, offset, 5, 5); + + if (have_tap_listener(bat_follow_tap)) { + tap_queue_packet(bat_follow_tap, pinfo, next_tvb); + } + + dissect_bat_hna(next_tvb, pinfo, tree); + offset += 5; + } + + length_remaining = tvb_reported_length_remaining(tvb, offset); + if (length_remaining != 0) { + next_tvb = tvb_new_subset(tvb, offset, -1, -1); + + if (have_tap_listener(bat_follow_tap)) { + tap_queue_packet(bat_follow_tap, pinfo, next_tvb); + } + + call_dissector(data_handle, next_tvb, pinfo, tree); + } +} + +static void dissect_bat_hna(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree) +{ + const guint8 *hna_addr; + guint32 hna; + guint8 hna_netmask; + + hna_addr = tvb_get_ptr(tvb, 0, 4); + hna = tvb_get_ipv4(tvb, 0); + hna_netmask = tvb_get_guint8(tvb, 4); + + + /* Set tree info */ + if (tree) { + proto_item *ti = NULL; + proto_tree *bat_batman_hna_tree = NULL; + + if (PTREE_DATA(tree)->visible) { + ti = proto_tree_add_protocol_format(tree, proto_bat_plugin, tvb, 0, 5, + "B.A.T.M.A.N. HNA: %s/%d", + ip_to_str(hna_addr), hna_netmask); + } else { + ti = proto_tree_add_item(tree, proto_bat_plugin, tvb, 0, 5, FALSE); + } + bat_batman_hna_tree = proto_item_add_subtree(ti, ett_bat_batman_hna); + + proto_tree_add_ipv4(bat_batman_hna_tree, hf_bat_batman_hna_network, tvb, 0, 4, hna); + proto_tree_add_item(bat_batman_hna_tree, hf_bat_batman_hna_netmask, tvb, 4, 1, FALSE); + } +} + + +static void dissect_bat_gw(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + struct gw_packet *gw_packeth; + const guint8 *ip_addr; + guint32 ip; + int ip_pos; + + tvbuff_t *next_tvb; + guint length_remaining; + int offset = 0; + + gw_packeth = ep_alloc(sizeof(struct gw_packet)); + gw_packeth->type = tvb_get_guint8(tvb, 0); + + switch (gw_packeth->type) { + case TUNNEL_IP_INVALID: + ip_pos = 13; + break; + default: + ip_pos = 1; + } + ip = tvb_get_ipv4(tvb, ip_pos); + ip_addr = tvb_get_ptr(tvb, ip_pos, 4); + + /* set protocol name */ + if (check_col(pinfo->cinfo, COL_PROTOCOL)) { + col_set_str(pinfo->cinfo, COL_PROTOCOL, "BAT_GW"); + } + + /* Set info column */ + if (check_col(pinfo->cinfo, COL_INFO)) { + col_clear(pinfo->cinfo, COL_INFO); + col_append_fstr(pinfo->cinfo, COL_INFO, "Type=%s", + val_to_str(gw_packeth->type, gw_packettypenames, "Unknown (0x%02x)")); + if (ip != 0) { + col_append_fstr(pinfo->cinfo, COL_INFO, " IP: %s (%s)", + get_hostname(ip), ip_to_str(ip_addr)); + } + } + + + /* Set tree info */ + if (tree) { + proto_item *ti = NULL; + proto_tree *bat_gw_entry_tree = NULL; + + if (PTREE_DATA(tree)->visible) { + ti = proto_tree_add_protocol_format(tree, proto_bat_plugin, tvb, 0, 1, + "B.A.T.M.A.N. GW [%s]", + val_to_str(gw_packeth->type, gw_packettypenames, "Unknown (0x%02x)")); + } else { + ti = proto_tree_add_item(tree, proto_bat_plugin, tvb, 0, 1, FALSE); + } + bat_gw_entry_tree = proto_item_add_subtree(ti, ett_bat_gw); + + proto_tree_add_item(bat_gw_entry_tree, hf_bat_gw_type, tvb, offset, 1, FALSE); + offset += 1; + + if (gw_packeth->type != TUNNEL_DATA && ip != 0) { + proto_tree_add_ipv4(bat_gw_entry_tree, hf_bat_gw_ip, tvb, ip_pos, 4, ip); + offset = ip_pos + 4; + } + } + + length_remaining = tvb_reported_length_remaining(tvb, offset); + if (length_remaining != 0) { + next_tvb = tvb_new_subset(tvb, offset, -1, -1); + + if (have_tap_listener(bat_follow_tap)) { + tap_queue_packet(bat_follow_tap, pinfo, next_tvb); + } + + if (gw_packeth->type == TUNNEL_DATA) { + call_dissector(ip_handle, next_tvb, pinfo, tree); + } else { + call_dissector(data_handle, next_tvb, pinfo, tree); + } + } +} + +static void dissect_bat_vis(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + guint8 version; + + /* set protocol name */ + if (check_col(pinfo->cinfo, COL_PROTOCOL)) { + col_set_str(pinfo->cinfo, COL_PROTOCOL, "BAT_VIS"); + } + + version = tvb_get_guint8(tvb, 4); + switch (version) { + case 22: + dissect_bat_vis_v22(tvb, pinfo, tree); + break; + case 23: + dissect_bat_vis_v23(tvb, pinfo, tree); + break; + default: + if (check_col(pinfo->cinfo, COL_INFO)) { + col_clear(pinfo->cinfo, COL_INFO); + col_append_fstr(pinfo->cinfo, COL_INFO, "Unsupported Version %d", version); + } + call_dissector(data_handle, tvb, pinfo, tree); + break; + } +} + +static void dissect_bat_vis_v22(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + struct vis_packet_v22 *vis_packeth; + const guint8 *sender_ip_addr; + guint32 sender_ip; + proto_tree *bat_vis_tree = NULL; + + tvbuff_t *next_tvb; + guint length_remaining, i; + int offset = 0; + + vis_packeth = ep_alloc(sizeof(struct vis_packet_v22)); + + sender_ip_addr = tvb_get_ptr(tvb, 0, 4); + sender_ip = tvb_get_ipv4(tvb, 0); + SET_ADDRESS(&vis_packeth->sender_ip, AT_IPv4, 4, sender_ip_addr); + vis_packeth->version = tvb_get_guint8(tvb, 4); + vis_packeth->gw_class = tvb_get_guint8(tvb, 5); + vis_packeth->tq_max = tvb_get_ntohs(tvb, 6); + + /* set protocol name */ + if (check_col(pinfo->cinfo, COL_PROTOCOL)) { + col_set_str(pinfo->cinfo, COL_PROTOCOL, "BAT_VIS"); + } + + /* Set info column */ + if (check_col(pinfo->cinfo, COL_INFO)) { + col_clear(pinfo->cinfo, COL_INFO); + col_append_fstr(pinfo->cinfo, COL_INFO, "Src: %s (%s)", + get_hostname(sender_ip), ip_to_str(vis_packeth->sender_ip.data)); + } + + /* Set tree info */ + if (tree) { + proto_item *ti = NULL; + + if (PTREE_DATA(tree)->visible) { + ti = proto_tree_add_protocol_format(tree, proto_bat_plugin, tvb, 0, VIS_PACKET_V22_SIZE, + "B.A.T.M.A.N. Vis, Src: %s (%s)", + get_hostname(sender_ip), ip_to_str(vis_packeth->sender_ip.data)); + } else { + ti = proto_tree_add_item(tree, proto_bat_plugin, tvb, 0, VIS_PACKET_V22_SIZE, FALSE); + } + bat_vis_tree = proto_item_add_subtree(ti, ett_bat_vis); + + /* items */ + proto_tree_add_ipv4(bat_vis_tree, hf_bat_vis_vis_orig, tvb, offset, 4, sender_ip); + offset += 4; + + proto_tree_add_item(bat_vis_tree, hf_bat_vis_version, tvb, offset, 1, FALSE); + offset += 1; + + proto_tree_add_item(bat_vis_tree, hf_bat_vis_gwflags, tvb, offset, 1, FALSE); + offset += 1; + + proto_tree_add_item(bat_vis_tree, hf_bat_max_tq_v22, tvb, offset, 2, FALSE); + offset += 2; + } + + tap_queue_packet(bat_tap, pinfo, vis_packeth); + + length_remaining = tvb_reported_length_remaining(tvb, offset); + + for (i = 0; i < length_remaining; i += VIS_PACKET_V22_DATA_SIZE) { + next_tvb = tvb_new_subset(tvb, offset, VIS_PACKET_V22_DATA_SIZE, VIS_PACKET_V22_DATA_SIZE); + + if (have_tap_listener(bat_follow_tap)) { + tap_queue_packet(bat_follow_tap, pinfo, next_tvb); + } + + if (bat_vis_tree != NULL) { + dissect_vis_entry_v22(next_tvb, pinfo, tree); + } + + offset += VIS_PACKET_V22_DATA_SIZE; + } + + length_remaining = tvb_reported_length_remaining(tvb, offset); + if (length_remaining != 0) { + next_tvb = tvb_new_subset(tvb, offset, -1, -1); + + if (have_tap_listener(bat_follow_tap)) { + tap_queue_packet(bat_follow_tap, pinfo, next_tvb); + } + + call_dissector(data_handle, next_tvb, pinfo, tree); + } +} + +static void dissect_vis_entry_v22(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree) +{ + struct vis_data_v22 *vis_datah; + const guint8 *ip_addr; + guint32 ip; + + vis_datah = ep_alloc(sizeof(struct vis_data_v22)); + vis_datah->type = tvb_get_guint8(tvb, 0); + vis_datah->data = tvb_get_ntohs(tvb, 1); + ip_addr = tvb_get_ptr(tvb, 3, 4); + ip = tvb_get_ipv4(tvb, 3); + SET_ADDRESS(&vis_datah->ip, AT_IPv4, 4, ip_addr); + + + /* Set tree info */ + if (tree) { + proto_item *ti = NULL; + proto_tree *bat_vis_entry_tree = NULL; + + if (PTREE_DATA(tree)->visible) { + ti = proto_tree_add_protocol_format(tree, proto_bat_plugin, tvb, 0, 7, + "VIS Entry: [%s] %s (%s)", + val_to_str(vis_datah->type, vis_packettypenames, "Unknown (0x%02x)"), + get_hostname(ip), ip_to_str(vis_datah->ip.data)); + } else { + ti = proto_tree_add_item(tree, proto_bat_plugin, tvb, 0, 7, FALSE); + } + bat_vis_entry_tree = proto_item_add_subtree(ti, ett_bat_vis_entry); + + proto_tree_add_item(bat_vis_entry_tree, hf_bat_vis_data_type, tvb, 0, 1, FALSE); + + switch (vis_datah->type) { + case DATA_TYPE_NEIGH: + proto_tree_add_item(bat_vis_entry_tree, hf_bat_vis_tq_v22, tvb, 1, 2, FALSE); + break; + case DATA_TYPE_HNA: + proto_tree_add_item(bat_vis_entry_tree, hf_bat_vis_netmask, tvb, 1, 1, FALSE); + break; + case DATA_TYPE_SEC_IF: + default: + break; + } + proto_tree_add_ipv4(bat_vis_entry_tree, hf_bat_vis_data_ip, tvb, 3, 4, ip); + } +} + +static void dissect_bat_vis_v23(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + struct vis_packet_v23 *vis_packeth; + const guint8 *sender_ip_addr; + guint32 sender_ip; + proto_tree *bat_vis_tree = NULL; + + tvbuff_t *next_tvb; + guint length_remaining, i; + int offset = 0; + + vis_packeth = ep_alloc(sizeof(struct vis_packet_v23)); + + sender_ip_addr = tvb_get_ptr(tvb, 0, 4); + sender_ip = tvb_get_ipv4(tvb, 0); + SET_ADDRESS(&vis_packeth->sender_ip, AT_IPv4, 4, sender_ip_addr); + vis_packeth->version = tvb_get_guint8(tvb, 4); + vis_packeth->gw_class = tvb_get_guint8(tvb, 5); + vis_packeth->tq_max = tvb_get_guint8(tvb, 6); + + /* set protocol name */ + if (check_col(pinfo->cinfo, COL_PROTOCOL)) { + col_set_str(pinfo->cinfo, COL_PROTOCOL, "BAT_VIS"); + } + + /* Set info column */ + if (check_col(pinfo->cinfo, COL_INFO)) { + col_clear(pinfo->cinfo, COL_INFO); + col_append_fstr(pinfo->cinfo, COL_INFO, "Src: %s (%s)", + get_hostname(sender_ip), ip_to_str(vis_packeth->sender_ip.data)); + } + + /* Set tree info */ + if (tree) { + proto_item *ti = NULL; + + if (PTREE_DATA(tree)->visible) { + ti = proto_tree_add_protocol_format(tree, proto_bat_plugin, tvb, 0, VIS_PACKET_V23_SIZE, + "B.A.T.M.A.N. Vis, Src: %s (%s)", + get_hostname(sender_ip), ip_to_str(vis_packeth->sender_ip.data)); + } else { + ti = proto_tree_add_item(tree, proto_bat_plugin, tvb, 0, VIS_PACKET_V23_SIZE, FALSE); + } + bat_vis_tree = proto_item_add_subtree(ti, ett_bat_vis); + /* items */ + proto_tree_add_ipv4(bat_vis_tree, hf_bat_vis_vis_orig, tvb, offset, 4, sender_ip); + offset += 4; + + proto_tree_add_item(bat_vis_tree, hf_bat_vis_version, tvb, offset, 1, FALSE); + offset += 1; + + proto_tree_add_item(bat_vis_tree, hf_bat_vis_gwflags, tvb, offset, 1, FALSE); + offset += 1; + + proto_tree_add_item(bat_vis_tree, hf_bat_max_tq_v23, tvb, offset, 1, FALSE); + offset += 1; + } + + tap_queue_packet(bat_tap, pinfo, vis_packeth); + + length_remaining = tvb_reported_length_remaining(tvb, offset); + + for (i = 0; i < length_remaining; i += VIS_PACKET_V23_DATA_SIZE) { + next_tvb = tvb_new_subset(tvb, offset, VIS_PACKET_V23_DATA_SIZE, VIS_PACKET_V23_DATA_SIZE); + + if (have_tap_listener(bat_follow_tap)) { + tap_queue_packet(bat_follow_tap, pinfo, next_tvb); + } + + if (bat_vis_tree != NULL) { + dissect_vis_entry_v23(next_tvb, pinfo, tree); + } + + offset += VIS_PACKET_V23_DATA_SIZE; + } + + length_remaining = tvb_reported_length_remaining(tvb, offset); + if (length_remaining != 0) { + next_tvb = tvb_new_subset(tvb, offset, -1, -1); + + if (have_tap_listener(bat_follow_tap)) { + tap_queue_packet(bat_follow_tap, pinfo, next_tvb); + } + + call_dissector(data_handle, next_tvb, pinfo, tree); + } +} + +static void dissect_vis_entry_v23(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree) +{ + struct vis_data_v23 *vis_datah; + const guint8 *ip_addr; + guint32 ip; + + vis_datah = ep_alloc(sizeof(struct vis_data_v23)); + vis_datah->type = tvb_get_guint8(tvb, 0); + vis_datah->data = tvb_get_guint8(tvb, 1); + ip_addr = tvb_get_ptr(tvb, 2, 4); + ip = tvb_get_ipv4(tvb, 2); + SET_ADDRESS(&vis_datah->ip, AT_IPv4, 4, ip_addr); + + + /* Set tree info */ + if (tree) { + proto_item *ti = NULL; + proto_tree *bat_vis_entry_tree = NULL; + + if (PTREE_DATA(tree)->visible) { + ti = proto_tree_add_protocol_format(tree, proto_bat_plugin, tvb, 0, 7, + "VIS Entry: [%s] %s (%s)", + val_to_str(vis_datah->type, vis_packettypenames, "Unknown (0x%02x)"), + get_hostname(ip), ip_to_str(vis_datah->ip.data)); + } else { + ti = proto_tree_add_item(tree, proto_bat_plugin, tvb, 0, 7, FALSE); + } + bat_vis_entry_tree = proto_item_add_subtree(ti, ett_bat_vis_entry); + + proto_tree_add_item(bat_vis_entry_tree, hf_bat_vis_data_type, tvb, 0, 1, FALSE); + + switch (vis_datah->type) { + case DATA_TYPE_NEIGH: + proto_tree_add_item(bat_vis_entry_tree, hf_bat_vis_tq_v23, tvb, 1, 1, FALSE); + break; + case DATA_TYPE_HNA: + proto_tree_add_item(bat_vis_entry_tree, hf_bat_vis_netmask, tvb, 1, 1, FALSE); + break; + case DATA_TYPE_SEC_IF: + default: + break; + } + proto_tree_add_ipv4(bat_vis_entry_tree, hf_bat_vis_data_ip, tvb, 2, 4, ip); + } +} void proto_register_bat(void) { + module_t *bat_module = NULL; + + static hf_register_info hf[] = { + { &hf_bat_batman_version, + { "Version", "bat.batman.version", + FT_UINT8, BASE_DEC, NULL, 0x0, + "", HFILL } + }, + { &hf_bat_batman_flags, + { "Flags", "bat.batman.flags", + FT_UINT8, BASE_HEX, NULL, 0x0, + "", HFILL } + }, + { &hf_bat_batman_ttl, + { "Time to Live", "bat.batman.ttl", + FT_UINT8, BASE_DEC, NULL, 0x0, + "", HFILL } + }, + { &hf_bat_batman_gwflags, + { "Gateway Flags", "bat.batman.gwflags", + FT_UINT8, BASE_HEX, NULL, 0x0, + "", HFILL } + }, + { &hf_bat_batman_seqno, + { "Sequence number", "bat.batman.seq", + FT_UINT16, BASE_DEC, NULL, 0x0, + "", HFILL } + }, + { &hf_bat_batman_gwport, + { "Gateway Port", "bat.batman.gwport", + FT_UINT16, BASE_DEC, NULL, 0x0, + "", HFILL } + }, + { &hf_bat_batman_orig, + { "Originator", "bat.batman.orig", + FT_IPv4, BASE_NONE, NULL, 0x0, + "", HFILL } + }, + { &hf_bat_batman_old_orig, + { "Received from", "bat.batman.old_orig", + FT_IPv4, BASE_NONE, NULL, 0x0, + "", HFILL } + }, + { &hf_bat_batman_tq, + { "Transmission Quality", "bat.batman.tq", + FT_UINT8, BASE_DEC, NULL, 0x0, + "", HFILL } + }, + { &hf_bat_batman_hna_len, + { "Number of HNAs", "bat.batman.hna_len", + FT_UINT8, BASE_DEC, NULL, 0x0, + "", HFILL } + }, + { &hf_bat_batman_flags_unidirectional, + { "Unidirectional", "bat.batman.flags.unidirectional", + FT_BOOLEAN, 8, TFS(&flags_set_truth), 0x80, + "", HFILL } + }, + { &hf_bat_batman_flags_directlink, + { "DirectLink", "bat.batman.flags.directlink", + FT_BOOLEAN, 8, TFS(&flags_set_truth), 0x40, + "", HFILL } + }, + { &hf_bat_batman_hna_network, + { "HNA Network", "bat.batman.hna_network", + FT_IPv4, BASE_NONE, NULL, 0x0, + "", HFILL } + }, + { &hf_bat_batman_hna_netmask, + { "HNA Netmask", "bat.batman.hna_netmask", + FT_UINT8, BASE_DEC, NULL, 0x0, + "", HFILL } + }, + { &hf_bat_gw_type, + { "Type", "bat.gw.type", + FT_UINT8, BASE_DEC, VALS(gw_packettypenames), 0x0, + "", HFILL } + }, + { &hf_bat_gw_ip, + { "IP", "bat.gw.ip", + FT_IPv4, BASE_NONE, NULL, 0x0, + "", HFILL } + }, + { &hf_bat_vis_vis_orig, + { "Originator", "bat.vis.sender_ip", + FT_IPv4, BASE_NONE, NULL, 0x0, + "", HFILL } + }, + { &hf_bat_vis_version, + { "Version", "bat.vis.version", + FT_UINT8, BASE_DEC, NULL, 0x0, + "", HFILL } + }, + { &hf_bat_vis_gwflags, + { "Gateway Flags", "bat.vis.gwflags", + FT_UINT8, BASE_HEX, NULL, 0x0, + "", HFILL } + }, + { &hf_bat_max_tq_v22, + { "Maximum Transmission Quality", "bat.vis.tq_max", + FT_UINT16, BASE_DEC, NULL, 0x0, + "", HFILL } + }, + { &hf_bat_max_tq_v23, + { "Maximum Transmission Quality", "bat.vis.tq_max", + FT_UINT8, BASE_DEC, NULL, 0x0, + "", HFILL } + }, + { &hf_bat_vis_data_type, + { "Type", "bat.vis.data_type", + FT_UINT8, BASE_DEC, VALS(vis_packettypenames), 0x0, + "", HFILL } + }, + { &hf_bat_vis_tq_v22, + { "Transmission Quality", "bat.vis.tq", + FT_UINT16, BASE_DEC, NULL, 0x0, + "", HFILL} + }, + { &hf_bat_vis_tq_v23, + { "Transmission Quality", "bat.vis.tq", + FT_UINT8, BASE_DEC, NULL, 0x0, + "", HFILL} + }, + { &hf_bat_vis_netmask, + { "Netmask", "bat.vis.netmask", + FT_UINT8, BASE_DEC, NULL, 0x0, + "", HFILL} + }, + { &hf_bat_vis_data_ip, + { "IP", "bat.vis.data_ip", + FT_IPv4, BASE_NONE, NULL, 0x0, + "", HFILL } + } + }; + + /* Setup protocol subtree array */ + static gint *ett[] = { + &ett_bat_batman, + &ett_bat_batman_flags, + &ett_bat_batman_gwflags, + &ett_bat_batman_hna, + &ett_bat_gw, + &ett_bat_vis, + &ett_bat_vis_entry + }; proto_bat_plugin = proto_register_protocol( "B.A.T.M.A.N. Layer 3 Protocol", @@ -48,22 +844,55 @@ void proto_register_bat(void) /* Register our configuration options for B.A.T.M.A.N. */ bat_module = prefs_register_protocol(proto_bat_plugin, proto_reg_handoff_bat); - register_bat_batman(); - register_bat_gw(); - register_bat_vis(); + proto_register_field_array(proto_bat_plugin, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + + prefs_register_uint_preference(bat_module, "batman.bat.port", "BAT UDP Port", + "Set the port for B.A.T.M.A.N. BAT " + "messages (if other than the default of 4305)", + 10, &global_bat_batman_udp_port); + prefs_register_uint_preference(bat_module, "batman.gw.port", "GW UDP Port", + "Set the port for B.A.T.M.A.N. Gateway " + "messages (if other than the default of 4306)", + 10, &global_bat_gw_udp_port); + prefs_register_uint_preference(bat_module, "batman.vis.port", "VIS UDP Port", + "Set the port for B.A.T.M.A.N. VIS " + "messages (if other than the default of 4307)", + 10, &global_bat_vis_udp_port); } void proto_reg_handoff_bat(void) { static gboolean inited = FALSE; + static dissector_handle_t batman_handle; + static dissector_handle_t gw_handle; + static dissector_handle_t vis_handle; + static guint batman_udp_port; + static guint gw_udp_port; + static guint vis_udp_port; if (!inited) { bat_tap = register_tap("batman"); bat_follow_tap = register_tap("batman_follow"); + + batman_handle = create_dissector_handle(dissect_bat_batman, proto_bat_plugin); + gw_handle = create_dissector_handle(dissect_bat_gw, proto_bat_plugin); + vis_handle = create_dissector_handle(dissect_bat_vis, proto_bat_plugin); + + ip_handle = find_dissector("ip"); + data_handle = find_dissector("data"); + inited = TRUE; + } else { + dissector_delete("udp.port", batman_udp_port, batman_handle); + dissector_delete("udp.port", gw_udp_port, gw_handle); + dissector_delete("udp.port", vis_udp_port, vis_handle); } - reg_handoff_bat_batman(); - reg_handoff_bat_gw(); - reg_handoff_bat_vis(); -} + batman_udp_port = global_bat_batman_udp_port; + gw_udp_port = global_bat_gw_udp_port; + vis_udp_port = global_bat_vis_udp_port; + dissector_add("udp.port", batman_udp_port, batman_handle); + dissector_add("udp.port", gw_udp_port, gw_handle); + dissector_add("udp.port", vis_udp_port, vis_handle); +}
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