epan/dissectors/packet-gluster_pmap.c

   1 /* packet-gluster_pmap.c
   2  * Routines for Gluster Portmapper and Gluster DUMP dissection
   3  * Copyright 2012, Niels de Vos <ndevos@redhat.com>
   4  *
   5  * Wireshark - Network traffic analyzer
   6  * By Gerald Combs <gerald@wireshark.org>
   7  * Copyright 1998 Gerald Combs
   8  *
   9  * SPDX-License-Identifier: GPL-2.0-or-later
  10  *
  11  *
  12  * References to source files point in general to the glusterfs sources.
  13  * There is currently no RFC or other document where the protocol is
  14  * completely described. The glusterfs sources can be found at:
  15  * - http://git.gluster.com/?p=glusterfs.git
  16  * - https://github.com/gluster/glusterfs
  17  *
  18  * The coding-style is roughly the same as the one use in the Linux kernel,
  19  * see http://www.kernel.org/doc/Documentation/CodingStyle.
  20  */
  21
  22 #include "config.h"
  23
  24 #include <epan/packet.h>
  25
  26 #include "packet-rpc.h"
  27 #include "packet-gluster.h"
  28
  29 void proto_register_gluster_pmap(void);
  30 void proto_reg_handoff_gluster_pmap(void);
  31 void proto_register_gluster_dump(void);
  32 void proto_reg_handoff_gluster_dump(void);
  33
  34 /* Initialize the protocol and registered fields */
  35 static gint proto_gluster_pmap = -1;
  36 static gint proto_gluster_dump = -1;
  37
  38 /* programs and procedures */
  39 static gint hf_gluster_pmap_proc = -1;
  40 static gint hf_gluster_dump_proc = -1;
  41
  42 /* fields used by multiple programs/procedures */
  43 static gint hf_gluster_brick = -1;
  44 static gint hf_gluster_brick_status = -1;
  45 static gint hf_gluster_brick_port = -1;
  46 static gint hf_gluster_gfsid = -1;
  47 static gint hf_gluster_progname = -1;
  48 static gint hf_gluster_prognum = -1;
  49 static gint hf_gluster_progver = -1;
  50
  51 /* Initialize the subtree pointers */
  52 static gint ett_gluster_pmap = -1;
  53 static gint ett_gluster_dump = -1;
  54 static gint ett_gluster_dump_detail = -1;
  55
  56 /* PMAP PORTBYBRICK */
  57 static int
  58 gluster_pmap_portbybrick_reply(tvbuff_t *tvb, packet_info *pinfo,
  59                                                         proto_tree *tree, void* data)
  60 {
  61         int offset = 0;
  62         offset = gluster_dissect_common_reply(tvb, offset, pinfo, tree, data);
  63         offset = dissect_rpc_uint32(tvb, tree, hf_gluster_brick_status, offset);
  64         offset = dissect_rpc_uint32(tvb, tree, hf_gluster_brick_port, offset);
  65
  66         return offset;
  67 }
  68
  69 static int
  70 gluster_pmap_portbybrick_call(tvbuff_t *tvb,
  71                                 packet_info *pinfo _U_, proto_tree *tree, void* data _U_)
  72 {
  73         return dissect_rpc_string(tvb, tree, hf_gluster_brick, 0, NULL);
  74 }
  75
  76 /* Based on rpc/rpc-lib/src/rpc-common.c, but xdr encoding/decoding is broken.
  77  * The structure in rpc/rpc-lib/src/xdr-common.h lists 2x unit64_t, but to
  78  * encode/decode, xdr_u_quad_t() is used (which is uint32_t).
  79  */
  80 static int
  81 gluster_dump_reply_detail(tvbuff_t *tvb, int offset, packet_info *pinfo _U_,
  82                                                         proto_tree *tree, void* data _U_)
  83 {
  84         proto_item *detail_item;
  85         proto_tree *detail_tree;
  86         const gchar *progname = NULL;
  87
  88         detail_tree = proto_tree_add_subtree(tree, tvb, offset, -1,
  89                                                         ett_gluster_dump_detail, &detail_item, "Available Program: ");
  90
  91         /* progname */
  92         offset = dissect_rpc_string(tvb, detail_tree, hf_gluster_progname,
  93                                                         offset, &progname);
  94         proto_item_append_text(detail_item, "%s", progname);
  95
  96         /* prognumber (marked as uint64) */
  97         offset = dissect_rpc_uint64(tvb, detail_tree, hf_gluster_prognum,
  98                                                                 offset);
  99         /* progversion (marked as uint64) */
 100         offset = dissect_rpc_uint64(tvb, detail_tree, hf_gluster_progver,
 101                                                                 offset);
 102
 103         return offset;
 104 }
 105
 106 static int
 107 gluster_dump_reply(tvbuff_t *tvb, packet_info *pinfo,
 108                                                         proto_tree *tree, void* data)
 109 {
 110         int offset = 0;
 111
 112         offset = dissect_rpc_uint64(tvb, tree, hf_gluster_gfsid, offset);
 113         offset = gluster_dissect_common_reply(tvb, offset, pinfo, tree, data);
 114
 115         offset = dissect_rpc_list(tvb, pinfo, tree, offset,
 116                                   gluster_dump_reply_detail, NULL);
 117
 118         return offset;
 119 }
 120
 121 /* DUMP request */
 122 static int
 123 gluster_dump_call(tvbuff_t *tvb, packet_info *pinfo _U_,
 124                                                         proto_tree *tree, void* data _U_)
 125 {
 126         return dissect_rpc_uint64(tvb, tree, hf_gluster_gfsid, 0);
 127 }
 128
 129 /* GLUSTER_PMAP_PROGRAM from xlators/mgmt/glusterd/src/glusterd-pmap.c */
 130 static const vsff gluster_pmap_proc[] = {
 131         {
 132                 GF_PMAP_NULL,        "NULL",
 133                 dissect_rpc_void, dissect_rpc_void
 134         },
 135         {
 136                 GF_PMAP_PORTBYBRICK, "PORTBYBRICK",
 137                 gluster_pmap_portbybrick_call, gluster_pmap_portbybrick_reply
 138         },
 139         { GF_PMAP_BRICKBYPORT, "BRICKBYPORT", dissect_rpc_unknown, dissect_rpc_unknown },
 140         { GF_PMAP_SIGNIN,      "SIGNIN",      dissect_rpc_unknown, dissect_rpc_unknown },
 141         { GF_PMAP_SIGNOUT,     "SIGNOUT",     dissect_rpc_unknown, dissect_rpc_unknown },
 142         { GF_PMAP_SIGNUP,      "SIGNUP",      dissect_rpc_unknown, dissect_rpc_unknown },
 143         { 0, NULL, NULL, NULL }
 144 };
 145 static const value_string gluster_pmap_proc_vals[] = {
 146         { GF_PMAP_NULL,        "NULL" },
 147         { GF_PMAP_PORTBYBRICK, "PORTBYBRICK" },
 148         { GF_PMAP_BRICKBYPORT, "BRICKBYPORT" },
 149         { GF_PMAP_SIGNIN,      "SIGNIN" },
 150         { GF_PMAP_SIGNOUT,     "SIGNOUT" },
 151         { GF_PMAP_SIGNUP,      "SIGNUP" },
 152         { 0, NULL }
 153 };
 154 static const rpc_prog_vers_info gluster_pmap_vers_info[] = {
 155         { 1, gluster_pmap_proc, &hf_gluster_pmap_proc }
 156 };
 157
 158 /* procedures for GLUSTER_DUMP_PROGRAM */
 159 static const vsff gluster_dump_proc[] = {
 160         { 0, "NULL", dissect_rpc_void, dissect_rpc_void },
 161         { GF_DUMP_DUMP, "DUMP", gluster_dump_call, gluster_dump_reply },
 162         { 0, NULL, NULL, NULL }
 163 };
 164 static const value_string gluster_dump_proc_vals[] = {
 165         { 0,            "NULL" },
 166         { GF_DUMP_DUMP, "DUMP" },
 167         { 0, NULL }
 168 };
 169 static const rpc_prog_vers_info gluster_dump_vers_info[] = {
 170         { 1, gluster_dump_proc, &hf_gluster_dump_proc }
 171 };
 172
 173 void
 174 proto_register_gluster_pmap(void)
 175 {
 176         /* Setup list of header fields  See Section 1.6.1 for details */
 177         static hf_register_info hf[] = {
 178                 /* programs */
 179                 { &hf_gluster_pmap_proc,
 180                         { "Gluster Portmap", "gluster.pmap.proc", FT_UINT32,
 181                                 BASE_DEC, VALS(gluster_pmap_proc_vals), 0,
 182                                 NULL, HFILL }
 183                 },
 184                 { &hf_gluster_brick,
 185                         { "Brick", "gluster.brick", FT_STRINGZ, BASE_NONE,
 186                                 NULL, 0, NULL, HFILL }
 187                 },
 188                 { &hf_gluster_brick_status,
 189                         { "Status", "gluster.brick.status", FT_INT32, BASE_DEC,
 190                                 NULL, 0, NULL, HFILL }
 191                 },
 192                 { &hf_gluster_brick_port,
 193                         { "Port", "gluster.brick.port", FT_INT32, BASE_DEC,
 194                                 NULL, 0, NULL, HFILL }
 195                 }
 196         };
 197
 198         /* Setup protocol subtree array */
 199         static gint *ett[] = {
 200                 &ett_gluster_pmap
 201         };
 202
 203         proto_gluster_pmap = proto_register_protocol("Gluster Portmap",
 204                                         "Gluster Portmap", "gluster.pmap");
 205         proto_register_subtree_array(ett, array_length(ett));
 206         proto_register_field_array(proto_gluster_pmap, hf, array_length(hf));
 207 }
 208
 209 void
 210 proto_reg_handoff_gluster_pmap(void)
 211 {
 212         rpc_init_prog(proto_gluster_pmap, GLUSTER_PMAP_PROGRAM,
 213             ett_gluster_pmap,
 214             G_N_ELEMENTS(gluster_pmap_vers_info), gluster_pmap_vers_info);
 215 }
 216
 217 void
 218 proto_register_gluster_dump(void)
 219 {
 220         /* Setup list of header fields  See Section 1.6.1 for details */
 221         static hf_register_info hf[] = {
 222                 /* programs */
 223                 { &hf_gluster_dump_proc,
 224                         { "Gluster DUMP", "gluster.dump.proc", FT_UINT32,
 225                                 BASE_DEC, VALS(gluster_dump_proc_vals), 0,
 226                                 NULL, HFILL }
 227                 },
 228                 { &hf_gluster_progname,
 229                         { "Program Name", "gluster.dump.progname", FT_STRING,
 230                                 BASE_NONE, NULL, 0, NULL, HFILL }
 231                 },
 232                 { &hf_gluster_prognum,
 233                         { "Program Number", "gluster.dump.prognum",
 234                                 FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL }
 235                 },
 236                 { &hf_gluster_progver,
 237                         { "Program Version", "gluster.dump.progver",
 238                                 FT_UINT64, BASE_DEC, NULL, 0, NULL, HFILL }
 239                 },
 240                 { &hf_gluster_gfsid,
 241                         { "GFS ID", "gluster.gfsid", FT_UINT64, BASE_HEX, NULL,
 242                                 0, NULL, HFILL }
 243                 }
 244         };
 245
 246         /* Setup protocol subtree array */
 247         static gint *ett[] = {
 248                 &ett_gluster_dump,
 249                 &ett_gluster_dump_detail
 250         };
 251
 252         proto_gluster_dump = proto_register_protocol("Gluster Dump",
 253                                         "Gluster Dump", "gluster.dump");
 254         proto_register_subtree_array(ett, array_length(ett));
 255         proto_register_field_array(proto_gluster_dump, hf, array_length(hf));
 256 }
 257
 258 void
 259 proto_reg_handoff_gluster_dump(void)
 260 {
 261         rpc_init_prog(proto_gluster_dump, GLUSTER_DUMP_PROGRAM,
 262             ett_gluster_dump,
 263             G_N_ELEMENTS(gluster_dump_vers_info), gluster_dump_vers_info);
 264 }
 265
 266 /*
 267  * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
 268  *
 269  * Local variables:
 270  * c-basic-offset: 8
 271  * tab-width: 8
 272  * indent-tabs-mode: t
 273  * End:
 274  *
 275  * vi: set shiftwidth=8 tabstop=8 noexpandtab:
 276  * :indentSize=8:tabSize=8:noTabs=false:
 277  */