epan/dissectors/packet-aim-sst.c

   1 /* packet-aim-sst.c
   2  * Routines for AIM (OSCAR) dissection, SNAC Server Stored Themes
   3  * Copyright 2004, Jelmer Vernooij <jelmer@samba.org>
   4  *
   5  * $Id$
   6  *
   7  * Wireshark - Network traffic analyzer
   8  * By Gerald Combs <gerald@wireshark.org>
   9  * Copyright 1998 Gerald Combs
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License
  13  * as published by the Free Software Foundation; either version 2
  14  * of the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  24  */
  25
  26 #include "config.h"
  27
  28 #include <glib.h>
  29
  30 #include <epan/packet.h>
  31 #include <epan/strutil.h>
  32
  33 #include "packet-aim.h"
  34
  35 void proto_register_aim_sst(void);
  36 void proto_reg_handoff_aim_sst(void);
  37
  38 #define FAMILY_SST    0x0010
  39
  40
  41 /* Initialize the protocol and registered fields */
  42 static int proto_aim_sst = -1;
  43 static int hf_aim_sst_unknown = -1;
  44 static int hf_aim_sst_md5_hash = -1;
  45 static int hf_aim_sst_md5_hash_size = -1;
  46 static int hf_aim_sst_ref_num = -1;
  47 static int hf_aim_sst_icon_size = -1;
  48 static int hf_aim_sst_icon = -1;
  49
  50 /* Initialize the subtree pointers */
  51 static gint ett_aim_sst      = -1;
  52
  53 static int dissect_aim_sst_buddy_down_req (tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree)
  54 {
  55         int offset = dissect_aim_buddyname(tvb, pinfo, 0, tree);
  56         guint8 md5_size;
  57
  58         proto_tree_add_item(tree, hf_aim_sst_unknown, tvb, offset, 4, ENC_NA);
  59         offset+=4;
  60
  61         proto_tree_add_item(tree, hf_aim_sst_md5_hash_size, tvb, offset, 1, ENC_BIG_ENDIAN);
  62         md5_size = tvb_get_guint8(tvb, offset);
  63         offset++;
  64
  65         proto_tree_add_item(tree, hf_aim_sst_md5_hash, tvb, offset, md5_size, ENC_NA);
  66
  67         offset+=md5_size;
  68         return offset;
  69 }
  70
  71 static int dissect_aim_sst_buddy_down_repl (tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree)
  72 {
  73         int offset = dissect_aim_buddyname(tvb, pinfo, 0, tree);
  74         guint8 md5_size;
  75         guint16 icon_size;
  76
  77         proto_tree_add_item(tree, hf_aim_sst_unknown, tvb, offset, 3, ENC_NA);
  78         offset+=3;
  79
  80         proto_tree_add_item(tree, hf_aim_sst_md5_hash_size, tvb, offset, 1, ENC_BIG_ENDIAN);
  81         md5_size = tvb_get_guint8(tvb, offset);
  82         offset++;
  83
  84         proto_tree_add_item(tree, hf_aim_sst_md5_hash, tvb, offset, md5_size, ENC_NA);
  85
  86         offset+=md5_size;
  87
  88         proto_tree_add_item(tree, hf_aim_sst_icon_size, tvb, offset, 2, ENC_BIG_ENDIAN);
  89         icon_size = tvb_get_ntohs(tvb, offset);
  90         offset+=2;
  91
  92         if (icon_size)
  93         {
  94                 proto_tree_add_item(tree, hf_aim_sst_icon, tvb, offset, icon_size, ENC_NA);
  95         }
  96
  97         offset+=icon_size;
  98
  99         return offset;
 100 }
 101
 102 static int dissect_aim_sst_buddy_up_repl (tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree)
 103 {
 104         int offset = 0;
 105         guint8 md5_size;
 106
 107         proto_tree_add_item(tree, hf_aim_sst_unknown, tvb, offset, 4, ENC_NA);
 108         offset+=4;
 109
 110         proto_tree_add_item(tree, hf_aim_sst_md5_hash_size, tvb, offset, 1, ENC_BIG_ENDIAN);
 111         md5_size = tvb_get_guint8(tvb, offset);
 112         offset++;
 113
 114         proto_tree_add_item(tree, hf_aim_sst_md5_hash, tvb, offset, md5_size, ENC_NA);
 115
 116         offset+=md5_size;
 117         return offset;
 118 }
 119
 120 static int dissect_aim_sst_buddy_up_req (tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree)
 121 {
 122         int offset = 0;
 123         guint16 icon_size;
 124
 125         proto_tree_add_item(tree, hf_aim_sst_ref_num, tvb, offset, 2, ENC_BIG_ENDIAN);
 126         offset+=2;
 127
 128         proto_tree_add_item(tree, hf_aim_sst_icon_size, tvb, offset, 2, ENC_BIG_ENDIAN);
 129         icon_size = tvb_get_ntohs(tvb, offset);
 130         offset+=2;
 131
 132         if (icon_size)
 133         {
 134                 proto_tree_add_item(tree, hf_aim_sst_icon, tvb, offset, icon_size, ENC_NA);
 135         }
 136
 137         offset+=icon_size;
 138         return offset;
 139 }
 140
 141 static const aim_subtype aim_fnac_family_sst[] = {
 142         { 0x0001, "Error", dissect_aim_snac_error },
 143         { 0x0002, "Upload Buddy Icon Request", dissect_aim_sst_buddy_up_req },
 144         { 0x0003, "Upload Buddy Icon Reply", dissect_aim_sst_buddy_up_repl },
 145         { 0x0004, "Download Buddy Icon Request", dissect_aim_sst_buddy_down_req },
 146         { 0x0005, "Download Buddy Icon Reply", dissect_aim_sst_buddy_down_repl },
 147         { 0, NULL, NULL }
 148 };
 149
 150
 151 /* Register the protocol with Wireshark */
 152 void
 153 proto_register_aim_sst(void)
 154 {
 155
 156 /* Setup list of header fields */
 157         static hf_register_info hf[] = {
 158                 { &hf_aim_sst_md5_hash,
 159                   { "MD5 Hash", "aim_sst.md5", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL },
 160                 },
 161                 { &hf_aim_sst_md5_hash_size,
 162                   { "MD5 Hash Size", "aim_sst.md5.size", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL },
 163                 },
 164                 { &hf_aim_sst_unknown,
 165                   { "Unknown Data", "aim_sst.unknown", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL },
 166                 },
 167                 { &hf_aim_sst_ref_num,
 168                   { "Reference Number", "aim_sst.ref_num", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL },
 169                 },
 170                 { &hf_aim_sst_icon_size,
 171                   { "Icon Size", "aim_sst.icon_size", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL },
 172                 },
 173                 { &hf_aim_sst_icon,
 174                   { "Icon", "aim_sst.icon", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL },
 175                 },
 176         };
 177
 178 /* Setup protocol subtree array */
 179         static gint *ett[] = {
 180                 &ett_aim_sst,
 181         };
 182
 183 /* Register the protocol name and description */
 184         proto_aim_sst = proto_register_protocol("AIM Server Side Themes", "AIM SST", "aim_sst");
 185
 186 /* Required function calls to register the header fields and subtrees used */
 187         proto_register_field_array(proto_aim_sst, hf, array_length(hf));
 188         proto_register_subtree_array(ett, array_length(ett));
 189 }
 190
 191 void
 192 proto_reg_handoff_aim_sst(void)
 193 {
 194         aim_init_family(proto_aim_sst, ett_aim_sst, FAMILY_SST, aim_fnac_family_sst);
 195 }