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wireshark/packet-ipp.c

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/* packet-ipp.c
* Routines for IPP packet disassembly
*
* Guy Harris <guy@alum.mit.edu>
*
* $Id: packet-ipp.c,v 1.34 2003/01/28 22:02:26 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <ctype.h>
#include <glib.h>
#include <epan/packet.h>
#include <epan/strutil.h>
#include "packet-http.h"
static int proto_ipp = -1;
static gint ett_ipp = -1;
static gint ett_ipp_as = -1;
static gint ett_ipp_attr = -1;
static dissector_handle_t data_handle;
#define PRINT_JOB 0x0002
#define PRINT_URI 0x0003
#define VALIDATE_JOB 0x0004
#define CREATE_JOB 0x0005
#define SEND_DOCUMENT 0x0006
#define SEND_URI 0x0007
#define CANCEL_JOB 0x0008
#define GET_JOB_ATTRIBUTES 0x0009
#define GET_JOBS 0x000A
#define GET_PRINTER_ATTRIBUTES 0x000B
static const value_string operation_vals[] = {
{ PRINT_JOB, "Print-Job" },
{ PRINT_URI, "Print-URI" },
{ VALIDATE_JOB, "Validate-Job" },
{ CREATE_JOB, "Create-Job" },
{ SEND_DOCUMENT, "Send-Document" },
{ SEND_URI, "Send-URI" },
{ CANCEL_JOB, "Cancel-Job" },
{ GET_JOB_ATTRIBUTES, "Get-Job-Attributes" },
{ GET_JOBS, "Get-Jobs" },
{ GET_PRINTER_ATTRIBUTES, "Get-Printer-Attributes" },
{ 0, NULL }
};
#define STATUS_SUCCESSFUL 0x0000
#define STATUS_INFORMATIONAL 0x0100
#define STATUS_REDIRECTION 0x0200
#define STATUS_CLIENT_ERROR 0x0400
#define STATUS_SERVER_ERROR 0x0500
#define STATUS_TYPE_MASK 0xFF00
#define SUCCESSFUL_OK 0x0000
#define SUCCESSFUL_OK_IGN_OR_SUB_ATTR 0x0001
#define SUCCESSFUL_OK_CONFLICTING_ATTR 0x0002
#define CLIENT_ERROR_BAD_REQUEST 0x0400
#define CLIENT_ERROR_FORBIDDEN 0x0401
#define CLIENT_ERROR_NOT_AUTHENTICATED 0x0402
#define CLIENT_ERROR_NOT_AUTHORIZED 0x0403
#define CLIENT_ERROR_NOT_POSSIBLE 0x0404
#define CLIENT_ERROR_TIMEOUT 0x0405
#define CLIENT_ERROR_NOT_FOUND 0x0406
#define CLIENT_ERROR_GONE 0x0407
#define CLIENT_ERROR_REQ_ENTITY_TOO_LRG 0x0408
#define CLIENT_ERROR_REQ_VALUE_TOO_LONG 0x0409
#define CLIENT_ERROR_DOC_FMT_NOT_SUPP 0x040A
#define CLIENT_ERROR_ATTR_OR_VAL_NOT_SUPP 0x040B
#define CLIENT_ERROR_URI_SCHEME_NOT_SUPP 0x040C
#define CLIENT_ERROR_CHARSET_NOT_SUPP 0x040D
#define CLIENT_ERROR_CONFLICTING_ATTRS 0x040E
#define SERVER_ERROR_INTERNAL_ERROR 0x0500
#define SERVER_ERROR_OPERATION_NOT_SUPP 0x0501
#define SERVER_ERROR_SERVICE_UNAVAIL 0x0502
#define SERVER_ERROR_VERSION_NOT_SUPP 0x0503
#define SERVER_ERROR_DEVICE_ERROR 0x0504
#define SERVER_ERROR_TEMPORARY_ERROR 0x0505
#define SERVER_ERROR_NOT_ACCEPTING_JOBS 0x0506
#define SERVER_ERROR_BUSY 0x0507
#define SERVER_ERROR_JOB_CANCELED 0x0508
static const value_string status_vals[] = {
{ SUCCESSFUL_OK, "Successful-OK" },
{ SUCCESSFUL_OK_IGN_OR_SUB_ATTR, "Successful-OK-Ignored-Or-Substituted-Attributes" },
{ SUCCESSFUL_OK_CONFLICTING_ATTR, "Successful-OK-Conflicting-Attributes" },
{ CLIENT_ERROR_BAD_REQUEST, "Client-Error-Bad-Request" },
{ CLIENT_ERROR_FORBIDDEN, "Client-Error-Forbidden" },
{ CLIENT_ERROR_NOT_AUTHENTICATED, "Client-Error-Not-Authenticated" },
{ CLIENT_ERROR_NOT_AUTHORIZED, "Client-Error-Not-Authorized" },
{ CLIENT_ERROR_NOT_POSSIBLE, "Client-Error-Not-Possible" },
{ CLIENT_ERROR_TIMEOUT, "Client-Error-Timeout" },
{ CLIENT_ERROR_NOT_FOUND, "Client-Error-Not-Found" },
{ CLIENT_ERROR_GONE, "Client-Error-Gone" },
{ CLIENT_ERROR_REQ_ENTITY_TOO_LRG, "Client-Error-Request-Entity-Too-Large" },
{ CLIENT_ERROR_REQ_VALUE_TOO_LONG, "Client-Error-Request-Value-Too-Long" },
{ CLIENT_ERROR_DOC_FMT_NOT_SUPP, "Client-Error-Document-Format-Not-Supported" },
{ CLIENT_ERROR_ATTR_OR_VAL_NOT_SUPP, "Client-Error-Attributes-Or-Values-Not-Supported" },
{ CLIENT_ERROR_URI_SCHEME_NOT_SUPP, "Client-Error-URI-Scheme-Not-Supported" },
{ CLIENT_ERROR_CHARSET_NOT_SUPP, "Client-Error-Charset-Not-Supported" },
{ CLIENT_ERROR_CONFLICTING_ATTRS, "Client-Error-Conflicting-Attributes" },
{ SERVER_ERROR_INTERNAL_ERROR, "Server-Error-Internal-Error" },
{ SERVER_ERROR_OPERATION_NOT_SUPP, "Server-Error-Operation-Not-Supported" },
{ SERVER_ERROR_SERVICE_UNAVAIL, "Server-Error-Service-Unavailable" },
{ SERVER_ERROR_VERSION_NOT_SUPP, "Server-Error-Version-Not-Supported" },
{ SERVER_ERROR_DEVICE_ERROR, "Server-Error-Device-Error" },
{ SERVER_ERROR_TEMPORARY_ERROR, "Server-Error-Temporary-Error" },
{ SERVER_ERROR_NOT_ACCEPTING_JOBS, "Server-Error-Not-Accepting-Jobs" },
{ SERVER_ERROR_BUSY, "Server-Error-Busy" },
{ SERVER_ERROR_JOB_CANCELED, "Server-Error-Job-Canceled" },
{ 0, NULL }
};
static int parse_attributes(tvbuff_t *tvb, int offset, proto_tree *tree);
static proto_tree *add_integer_tree(proto_tree *tree, tvbuff_t *tvb,
int offset, int name_length, int value_length, guint8 tag);
static void add_integer_value(gchar *tag_desc, proto_tree *tree,
tvbuff_t *tvb, int offset, int name_length, int value_length, guint8 tag);
static proto_tree *add_octetstring_tree(proto_tree *tree, tvbuff_t *tvb,
int offset, int name_length, int value_length);
static void add_octetstring_value(gchar *tag_desc, proto_tree *tree,
tvbuff_t *tvb, int offset, int name_length, int value_length);
static proto_tree *add_charstring_tree(proto_tree *tree, tvbuff_t *tvb,
int offset, int name_length, int value_length);
static void add_charstring_value(gchar *tag_desc, proto_tree *tree,
tvbuff_t *tvb, int offset, int name_length, int value_length);
static int add_value_head(gchar *tag_desc, proto_tree *tree, tvbuff_t *tvb,
int offset, int name_length, int value_length);
static void
dissect_ipp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_tree *ipp_tree;
proto_item *ti;
int offset = 0;
gboolean is_request = (pinfo->destport == 631);
guint16 status_code;
gchar *status_fmt;
if (check_col(pinfo->cinfo, COL_PROTOCOL))
col_set_str(pinfo->cinfo, COL_PROTOCOL, "IPP");
if (check_col(pinfo->cinfo, COL_INFO)) {
if (is_request)
col_set_str(pinfo->cinfo, COL_INFO, "IPP request");
else
col_set_str(pinfo->cinfo, COL_INFO, "IPP response");
}
if (tree) {
ti = proto_tree_add_item(tree, proto_ipp, tvb, offset, -1,
FALSE);
ipp_tree = proto_item_add_subtree(ti, ett_ipp);
proto_tree_add_text(ipp_tree, tvb, offset, 2, "Version: %u.%u",
tvb_get_guint8(tvb, offset),
tvb_get_guint8(tvb, offset + 1));
offset += 2;
if (is_request) {
proto_tree_add_text(ipp_tree, tvb, offset, 2, "Operation-id: %s",
val_to_str(tvb_get_ntohs(tvb, offset), operation_vals,
"Unknown (0x%04x)"));
} else {
status_code = tvb_get_ntohs(tvb, offset);
switch (status_code & STATUS_TYPE_MASK) {
case STATUS_SUCCESSFUL:
status_fmt = "Successful (0x%04x)";
break;
case STATUS_INFORMATIONAL:
status_fmt = "Informational (0x%04x)";
break;
case STATUS_REDIRECTION:
status_fmt = "Redirection (0x%04x)";
break;
case STATUS_CLIENT_ERROR:
status_fmt = "Client error (0x%04x)";
break;
case STATUS_SERVER_ERROR:
status_fmt = "Server error (0x%04x)";
break;
default:
status_fmt = "Unknown (0x%04x)";
break;
}
proto_tree_add_text(ipp_tree, tvb, offset, 2, "Status-code: %s",
val_to_str(status_code, status_vals, status_fmt));
}
offset += 2;
proto_tree_add_text(ipp_tree, tvb, offset, 4, "Request ID: %u",
tvb_get_ntohl(tvb, offset));
offset += 4;
offset = parse_attributes(tvb, offset, ipp_tree);
if (tvb_offset_exists(tvb, offset)) {
call_dissector(data_handle,
tvb_new_subset(tvb, offset, -1, -1), pinfo,
ipp_tree);
}
}
}
#define TAG_TYPE(tag) ((tag) & 0xF0)
#define TAG_TYPE_DELIMITER 0x00
#define TAG_TYPE_INTEGER 0x20
#define TAG_TYPE_OCTETSTRING 0x30
#define TAG_TYPE_CHARSTRING 0x40
#define TAG_END_OF_ATTRIBUTES 0x03
#define TAG_INTEGER 0x21
#define TAG_BOOLEAN 0x22
#define TAG_ENUM 0x23
#define TAG_OCTETSTRING 0x30
#define TAG_DATETIME 0x31
#define TAG_RESOLUTION 0x32
#define TAG_RANGEOFINTEGER 0x33
#define TAG_TEXTWITHLANGUAGE 0x35
#define TAG_NAMEWITHLANGUAGE 0x36
#define TAG_TEXTWITHOUTLANGUAGE 0x41
#define TAG_NAMEWITHOUTLANGUAGE 0x42
#define TAG_KEYWORD 0x44
#define TAG_URI 0x45
#define TAG_URISCHEME 0x46
#define TAG_CHARSET 0x47
#define TAG_NATURALLANGUAGE 0x48
#define TAG_MIMEMEDIATYPE 0x49
static const value_string tag_vals[] = {
/* Delimiter tags */
{ 0x01, "Operation attributes" },
{ 0x02, "Job attributes" },
{ TAG_END_OF_ATTRIBUTES, "End of attributes" },
{ 0x04, "Printer attributes" },
{ 0x05, "Unsupported attributes" },
/* Value tags */
{ 0x10, "Unsupported" },
{ 0x12, "Unknown" },
{ 0x13, "No value" },
{ TAG_INTEGER, "Integer" },
{ TAG_BOOLEAN, "Boolean" },
{ TAG_ENUM, "Enum" },
{ TAG_OCTETSTRING, "Octet string" },
{ TAG_DATETIME, "Date/Time" },
{ TAG_RESOLUTION, "Resolution" },
{ TAG_RANGEOFINTEGER, "Range of integer" },
{ TAG_TEXTWITHLANGUAGE, "Text with language" },
{ TAG_NAMEWITHLANGUAGE, "Name with language" },
{ TAG_TEXTWITHOUTLANGUAGE, "Text without language" },
{ TAG_NAMEWITHOUTLANGUAGE, "Name without language" },
{ TAG_KEYWORD, "Keyword" },
{ TAG_URI, "URI" },
{ TAG_URISCHEME, "URI scheme" },
{ TAG_CHARSET, "Character set" },
{ TAG_NATURALLANGUAGE, "Natural language" },
{ TAG_MIMEMEDIATYPE, "MIME media type" },
{ 0, NULL }
};
static int
parse_attributes(tvbuff_t *tvb, int offset, proto_tree *tree)
{
guint8 tag;
gchar *tag_desc;
int name_length, value_length;
proto_tree *as_tree = tree;
proto_item *tas = NULL;
int start_offset = offset;
proto_tree *attr_tree = tree;
while (tvb_offset_exists(tvb, offset)) {
tag = tvb_get_guint8(tvb, offset);
tag_desc = val_to_str(tag, tag_vals, "Reserved (0x%02x)");
if (TAG_TYPE(tag) == TAG_TYPE_DELIMITER) {
/*
* If we had an attribute sequence we were
* working on, we're done with it; set its
* length to the length of all the stuff
* we've done so far.
*/
if (tas != NULL)
proto_item_set_len(tas, offset - start_offset);
/*
* This tag starts a new attribute sequence;
* create a new tree under this tag when we see
* a non-delimiter tag, under which to put
* those attributes.
*/
as_tree = NULL;
attr_tree = tree;
/*
* Remember the offset at which this attribute
* sequence started, so we can use it to compute
* its length when it's finished.
*/
start_offset = offset;
/*
* Now create a new item for this tag.
*/
tas = proto_tree_add_text(tree, tvb, offset, 1,
"%s", tag_desc);
offset++;
if (tag == TAG_END_OF_ATTRIBUTES) {
/*
* No more attributes.
*/
break;
}
} else {
/*
* Value tag - get the name length.
*/
name_length = tvb_get_ntohs(tvb, offset + 1);
/*
* OK, get the value length.
*/
value_length = tvb_get_ntohs(tvb, offset + 1 + 2 + name_length);
/*
* OK, does the value run past the end of the
* frame?
*/
if (as_tree == NULL) {
/*
* OK, there's an attribute to hang
* under a delimiter tag, but we don't
* have a tree for that tag yet; create
* a tree.
*/
as_tree = proto_item_add_subtree(tas,
ett_ipp_as);
attr_tree = as_tree;
}
switch (TAG_TYPE(tag)) {
case TAG_TYPE_INTEGER:
if (name_length != 0) {
/*
* This is an attribute, not
* an additional value, so
* start a tree for it.
*/
attr_tree = add_integer_tree(as_tree,
tvb, offset, name_length,
value_length, tag);
}
add_integer_value(tag_desc, attr_tree, tvb,
offset, name_length, value_length, tag);
break;
case TAG_TYPE_OCTETSTRING:
if (name_length != 0) {
/*
* This is an attribute, not
* an additional value, so
* start a tree for it.
*/
attr_tree = add_octetstring_tree(as_tree,
tvb, offset, name_length,
value_length);
}
add_octetstring_value(tag_desc, attr_tree, tvb,
offset, name_length, value_length);
break;
case TAG_TYPE_CHARSTRING:
if (name_length != 0) {
/*
* This is an attribute, not
* an additional value, so
* start a tree for it.
*/
attr_tree = add_charstring_tree(as_tree,
tvb, offset, name_length,
value_length);
}
add_charstring_value(tag_desc, attr_tree, tvb,
offset, name_length, value_length);
break;
}
offset += 1 + 2 + name_length + 2 + value_length;
}
}
return offset;
}
static const value_string bool_vals[] = {
{ 0x00, "false" },
{ 0x01, "true" },
{ 0, NULL }
};
static proto_tree *
add_integer_tree(proto_tree *tree, tvbuff_t *tvb, int offset,
int name_length, int value_length, guint8 tag)
{
proto_item *ti;
guint8 bool_val;
switch (tag) {
case TAG_BOOLEAN:
if (value_length != 1) {
ti = proto_tree_add_text(tree, tvb, offset,
1 + 2 + name_length + 2 + value_length,
"%.*s: Invalid boolean (length is %u, should be 1)",
name_length,
tvb_get_ptr(tvb, offset + 1 + 2, name_length),
value_length);
} else {
bool_val = tvb_get_guint8(tvb,
offset + 1 + 2 + name_length + 2);
ti = proto_tree_add_text(tree, tvb, offset,
1 + 2 + name_length + 2 + value_length,
"%.*s: %s",
name_length,
tvb_get_ptr(tvb, offset + 1 + 2, name_length),
val_to_str(bool_val, bool_vals, "Unknown (0x%02x)"));
}
break;
case TAG_INTEGER:
case TAG_ENUM:
if (value_length != 4) {
ti = proto_tree_add_text(tree, tvb, offset,
1 + 2 + name_length + 2 + value_length,
"%.*s: Invalid integer (length is %u, should be 4)",
name_length,
tvb_get_ptr(tvb, offset + 1 + 2, name_length),
value_length);
} else {
ti = proto_tree_add_text(tree, tvb, offset,
1 + 2 + name_length + 2 + value_length,
"%.*s: %u",
name_length,
tvb_get_ptr(tvb, offset + 1 + 2, name_length),
tvb_get_ntohl(tvb, offset + 1 + 2 + name_length + 2));
}
break;
default:
ti = proto_tree_add_text(tree, tvb, offset,
1 + 2 + name_length + 2 + value_length,
"%.*s: Unknown integer type 0x%02x",
name_length,
tvb_get_ptr(tvb, offset + 1 + 2, name_length),
tag);
break;
}
return proto_item_add_subtree(ti, ett_ipp_attr);
}
static void
add_integer_value(gchar *tag_desc, proto_tree *tree, tvbuff_t *tvb,
int offset, int name_length, int value_length, guint8 tag)
{
guint8 bool_val;
offset = add_value_head(tag_desc, tree, tvb, offset, name_length,
value_length);
switch (tag) {
case TAG_BOOLEAN:
if (value_length == 1) {
bool_val = tvb_get_guint8(tvb, offset);
proto_tree_add_text(tree, tvb, offset, value_length,
"Value: %s",
val_to_str(bool_val, bool_vals, "Unknown (0x%02x)"));
}
break;
case TAG_INTEGER:
case TAG_ENUM:
if (value_length == 4) {
proto_tree_add_text(tree, tvb, offset, value_length,
"Value: %u", tvb_get_ntohl(tvb, offset));
}
break;
}
}
static proto_tree *
add_octetstring_tree(proto_tree *tree, tvbuff_t *tvb, int offset,
int name_length, int value_length)
{
proto_item *ti;
ti = proto_tree_add_text(tree, tvb, offset,
1 + 2 + name_length + 2 + value_length,
"%.*s: %s",
name_length,
tvb_get_ptr(tvb, offset + 1 + 2, name_length),
tvb_bytes_to_str(tvb, offset + 1 + 2 + name_length + 2, value_length));
return proto_item_add_subtree(ti, ett_ipp_attr);
}
static void
add_octetstring_value(gchar *tag_desc, proto_tree *tree, tvbuff_t *tvb,
int offset, int name_length, int value_length)
{
offset = add_value_head(tag_desc, tree, tvb, offset, name_length,
value_length);
proto_tree_add_text(tree, tvb, offset, value_length,
"Value: %s", tvb_bytes_to_str(tvb, offset, value_length));
}
static proto_tree *
add_charstring_tree(proto_tree *tree, tvbuff_t *tvb, int offset,
int name_length, int value_length)
{
proto_item *ti;
ti = proto_tree_add_text(tree, tvb, offset,
1 + 2 + name_length + 2 + value_length,
"%.*s: %.*s",
name_length,
tvb_get_ptr(tvb, offset + 1 + 2, name_length),
value_length,
tvb_get_ptr(tvb, offset + 1 + 2 + name_length + 2, value_length));
return proto_item_add_subtree(ti, ett_ipp_attr);
}
static void
add_charstring_value(gchar *tag_desc, proto_tree *tree, tvbuff_t *tvb,
int offset, int name_length, int value_length)
{
offset = add_value_head(tag_desc, tree, tvb, offset, name_length,
value_length);
proto_tree_add_text(tree, tvb, offset, value_length,
"Value: %.*s", value_length, tvb_get_ptr(tvb, offset, value_length));
}
static int
add_value_head(gchar *tag_desc, proto_tree *tree, tvbuff_t *tvb, int offset,
int name_length, int value_length)
{
proto_tree_add_text(tree, tvb, offset, 1, "Tag: %s", tag_desc);
offset += 1;
proto_tree_add_text(tree, tvb, offset, 2, "Name length: %u",
name_length);
offset += 2;
if (name_length != 0) {
proto_tree_add_text(tree, tvb, offset, name_length,
"Name: %.*s", name_length,
tvb_get_ptr(tvb, offset, name_length));
}
offset += name_length;
proto_tree_add_text(tree, tvb, offset, 2, "Value length: %u",
value_length);
offset += 2;
return offset;
}
void
proto_register_ipp(void)
{
/* static hf_register_info hf[] = {
{ &variable,
{ "Name", "ipp.abbreviation", TYPE, VALS_POINTER }},
};*/
static gint *ett[] = {
&ett_ipp,
&ett_ipp_as,
&ett_ipp_attr,
};
proto_ipp = proto_register_protocol("Internet Printing Protocol",
"IPP", "ipp");
/* proto_register_field_array(proto_ipp, hf, array_length(hf));*/
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_ipp(void)
{
dissector_handle_t ipp_handle;
/*
* Register ourselves as running atop HTTP and using port 631.
*/
ipp_handle = create_dissector_handle(dissect_ipp, proto_ipp);
http_dissector_add(631, ipp_handle);
data_handle = find_dissector("data");
}
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