![Guy Harris](/assets/img/avatar_default.png)
dynamically-assigned "ett_" integer values, assigned by "proto_register_subtree_array()"; this: obviates the need to update "packet.h" whenever you add a new subtree type - you only have to add a call to "proto_register_subtree_array()" to a "register" routine and an array of pointers to "ett_", if they're not already there, and add a pointer to the new "ett_" variable to the array, if they are there; would allow run-time-loaded dissectors to allocate subtree types when they're loaded. svn path=/trunk/; revision=1043
574 lines
18 KiB
C
574 lines
18 KiB
C
/* packet-ipp.c
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* Routines for IPP packet disassembly
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*
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* Guy Harris <guy@netapp.com>
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*
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* $Id: packet-ipp.c,v 1.3 1999/11/16 11:42:35 guy Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@zing.org>
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* Copyright 1998 Gerald Combs
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*
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#include <string.h>
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#include <ctype.h>
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#include <glib.h>
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#include "packet.h"
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static int proto_ipp = -1;
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static gint ett_ipp = -1;
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static gint ett_ipp_as = -1;
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static gint ett_ipp_attr = -1;
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#define PRINT_JOB 0x0002
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#define PRINT_URI 0x0003
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#define VALIDATE_JOB 0x0004
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#define CREATE_JOB 0x0005
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#define SEND_DOCUMENT 0x0006
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#define SEND_URI 0x0007
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#define CANCEL_JOB 0x0008
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#define GET_JOB_ATTRIBUTES 0x0009
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#define GET_JOBS 0x000A
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#define GET_PRINTER_ATTRIBUTES 0x000B
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static const value_string operation_vals[] = {
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{ PRINT_JOB, "Print-Job" },
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{ PRINT_URI, "Print-URI" },
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{ VALIDATE_JOB, "Validate-Job" },
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{ CREATE_JOB, "Create-Job" },
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{ SEND_DOCUMENT, "Send-Document" },
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{ SEND_URI, "Send-URI" },
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{ CANCEL_JOB, "Cancel-Job" },
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{ GET_JOB_ATTRIBUTES, "Get-Job-Attributes" },
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{ GET_JOBS, "Get-Jobs" },
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{ GET_PRINTER_ATTRIBUTES, "Get-Printer-Attributes" },
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{ 0, NULL }
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};
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#define STATUS_SUCCESSFUL 0x0000
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#define STATUS_INFORMATIONAL 0x0100
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#define STATUS_REDIRECTION 0x0200
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#define STATUS_CLIENT_ERROR 0x0400
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#define STATUS_SERVER_ERROR 0x0500
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#define STATUS_TYPE_MASK 0xFF00
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#define SUCCESSFUL_OK 0x0000
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#define SUCCESSFUL_OK_IGN_OR_SUB_ATTR 0x0001
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#define SUCCESSFUL_OK_CONFLICTING_ATTR 0x0002
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#define CLIENT_ERROR_BAD_REQUEST 0x0400
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#define CLIENT_ERROR_FORBIDDEN 0x0401
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#define CLIENT_ERROR_NOT_AUTHENTICATED 0x0402
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#define CLIENT_ERROR_NOT_AUTHORIZED 0x0403
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#define CLIENT_ERROR_NOT_POSSIBLE 0x0404
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#define CLIENT_ERROR_TIMEOUT 0x0405
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#define CLIENT_ERROR_NOT_FOUND 0x0406
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#define CLIENT_ERROR_GONE 0x0407
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#define CLIENT_ERROR_REQ_ENTITY_TOO_LRG 0x0408
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#define CLIENT_ERROR_REQ_VALUE_TOO_LONG 0x0409
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#define CLIENT_ERROR_DOC_FMT_NOT_SUPP 0x040A
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#define CLIENT_ERROR_ATTR_OR_VAL_NOT_SUPP 0x040B
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#define CLIENT_ERROR_URI_SCHEME_NOT_SUPP 0x040C
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#define CLIENT_ERROR_CHARSET_NOT_SUPP 0x040D
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#define CLIENT_ERROR_CONFLICTING_ATTRS 0x040E
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#define SERVER_ERROR_INTERNAL_ERROR 0x0500
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#define SERVER_ERROR_OPERATION_NOT_SUPP 0x0501
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#define SERVER_ERROR_SERVICE_UNAVAIL 0x0502
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#define SERVER_ERROR_VERSION_NOT_SUPP 0x0503
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#define SERVER_ERROR_DEVICE_ERROR 0x0504
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#define SERVER_ERROR_TEMPORARY_ERROR 0x0505
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#define SERVER_ERROR_NOT_ACCEPTING_JOBS 0x0506
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#define SERVER_ERROR_BUSY 0x0507
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#define SERVER_ERROR_JOB_CANCELED 0x0508
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static const value_string status_vals[] = {
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{ SUCCESSFUL_OK, "Successful-OK" },
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{ SUCCESSFUL_OK_IGN_OR_SUB_ATTR, "Successful-OK-Ignored-Or-Substituted-Attributes" },
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{ SUCCESSFUL_OK_CONFLICTING_ATTR, "Successful-OK-Conflicting-Attributes" },
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{ CLIENT_ERROR_BAD_REQUEST, "Client-Error-Bad-Request" },
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{ CLIENT_ERROR_FORBIDDEN, "Client-Error-Forbidden" },
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{ CLIENT_ERROR_NOT_AUTHENTICATED, "Client-Error-Not-Authenticated" },
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{ CLIENT_ERROR_NOT_AUTHORIZED, "Client-Error-Not-Authorized" },
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{ CLIENT_ERROR_NOT_POSSIBLE, "Client-Error-Not-Possible" },
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{ CLIENT_ERROR_TIMEOUT, "Client-Error-Timeout" },
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{ CLIENT_ERROR_NOT_FOUND, "Client-Error-Not-Found" },
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{ CLIENT_ERROR_GONE, "Client-Error-Gone" },
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{ CLIENT_ERROR_REQ_ENTITY_TOO_LRG, "Client-Error-Request-Entity-Too-Large" },
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{ CLIENT_ERROR_REQ_VALUE_TOO_LONG, "Client-Error-Request-Value-Too-Long" },
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{ CLIENT_ERROR_DOC_FMT_NOT_SUPP, "Client-Error-Document-Format-Not-Supported" },
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{ CLIENT_ERROR_ATTR_OR_VAL_NOT_SUPP, "Client-Error-Attributes-Or-Values-Not-Supported" },
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{ CLIENT_ERROR_URI_SCHEME_NOT_SUPP, "Client-Error-URI-Scheme-Not-Supported" },
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{ CLIENT_ERROR_CHARSET_NOT_SUPP, "Client-Error-Charset-Not-Supported" },
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{ CLIENT_ERROR_CONFLICTING_ATTRS, "Client-Error-Conflicting-Attributes" },
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{ SERVER_ERROR_INTERNAL_ERROR, "Server-Error-Internal-Error" },
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{ SERVER_ERROR_OPERATION_NOT_SUPP, "Server-Error-Operation-Not-Supported" },
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{ SERVER_ERROR_SERVICE_UNAVAIL, "Server-Error-Service-Unavailable" },
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{ SERVER_ERROR_VERSION_NOT_SUPP, "Server-Error-Version-Not-Supported" },
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{ SERVER_ERROR_DEVICE_ERROR, "Server-Error-Device-Error" },
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{ SERVER_ERROR_TEMPORARY_ERROR, "Server-Error-Temporary-Error" },
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{ SERVER_ERROR_NOT_ACCEPTING_JOBS, "Server-Error-Not-Accepting-Jobs" },
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{ SERVER_ERROR_BUSY, "Server-Error-Busy" },
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{ SERVER_ERROR_JOB_CANCELED, "Server-Error-Job-Canceled" },
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{ 0, NULL }
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};
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static int parse_attributes(const u_char *pd, int offset, frame_data *fd,
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proto_tree *tree);
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static proto_tree *add_integer_tree(proto_tree *tree, const u_char *pd,
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int offset, guint name_length, guint value_length);
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static void add_integer_value(guint tag, gchar *tag_desc, proto_tree *tree,
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const u_char *pd, int offset, guint name_length, guint value_length);
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static proto_tree *add_octetstring_tree(proto_tree *tree, const u_char *pd,
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int offset, guint name_length, guint value_length);
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static void add_octetstring_value(guint tag, gchar *tag_desc, proto_tree *tree,
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const u_char *pd, int offset, guint name_length, guint value_length);
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static proto_tree *add_charstring_tree(proto_tree *tree, const u_char *pd,
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int offset, guint name_length, guint value_length);
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static void add_charstring_value(guint tag, gchar *tag_desc, proto_tree *tree,
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const u_char *pd, int offset, guint name_length, guint value_length);
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static int add_value_head(guint tag, gchar *tag_desc, proto_tree *tree,
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const u_char *pd, int offset, guint name_length, guint value_length);
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void dissect_ipp(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
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{
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proto_tree *ipp_tree;
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proto_item *ti;
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gboolean is_request = (pi.destport == 631);
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guint16 status_code;
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gchar *status_fmt;
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if (check_col(fd, COL_PROTOCOL))
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col_add_str(fd, COL_PROTOCOL, "IPP");
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if (check_col(fd, COL_INFO)) {
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if (is_request)
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col_add_str(fd, COL_INFO, "IPP request");
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else
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col_add_str(fd, COL_INFO, "IPP response");
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}
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if (tree) {
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ti = proto_tree_add_item(tree, proto_ipp, offset, END_OF_FRAME, NULL);
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ipp_tree = proto_item_add_subtree(ti, ett_ipp);
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proto_tree_add_text(ipp_tree, offset, 2, "Version: %u.%u",
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pd[offset], pd[offset + 1]);
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offset += 2;
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if (is_request) {
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proto_tree_add_text(ipp_tree, offset, 2, "Operation-id: %s",
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val_to_str(pntohs(&pd[offset]), operation_vals,
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"Unknown (0x%04x)"));
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} else {
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status_code = pntohs(&pd[offset]);
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switch (status_code & STATUS_TYPE_MASK) {
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case STATUS_SUCCESSFUL:
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status_fmt = "Successful (0x%04x)";
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break;
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case STATUS_INFORMATIONAL:
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status_fmt = "Informational (0x%04x)";
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break;
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case STATUS_REDIRECTION:
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status_fmt = "Redirection (0x%04x)";
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break;
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case STATUS_CLIENT_ERROR:
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status_fmt = "Client error (0x%04x)";
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break;
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case STATUS_SERVER_ERROR:
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status_fmt = "Server error (0x%04x)";
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break;
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default:
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status_fmt = "Unknown (0x%04x)";
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break;
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}
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proto_tree_add_text(ipp_tree, offset, 2, "Status-code: %s",
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val_to_str(status_code, status_vals, status_fmt));
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}
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offset += 2;
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proto_tree_add_text(ipp_tree, offset, 4, "Request ID: %u",
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pntohl(&pd[offset]));
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offset += 4;
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offset = parse_attributes(pd, offset, fd, ipp_tree);
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if (IS_DATA_IN_FRAME(offset))
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dissect_data(pd, offset, fd, ipp_tree);
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}
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}
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#define TAG_TYPE(tag) ((tag) & 0xF0)
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#define TAG_TYPE_DELIMITER 0x00
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#define TAG_TYPE_INTEGER 0x20
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#define TAG_TYPE_OCTETSTRING 0x30
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#define TAG_TYPE_CHARSTRING 0x40
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#define TAG_END_OF_ATTRIBUTES 0x03
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#define TAG_INTEGER 0x21
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#define TAG_BOOLEAN 0x22
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#define TAG_ENUM 0x23
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#define TAG_OCTETSTRING 0x30
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#define TAG_DATETIME 0x31
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#define TAG_RESOLUTION 0x32
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#define TAG_RANGEOFINTEGER 0x33
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#define TAG_TEXTWITHLANGUAGE 0x35
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#define TAG_NAMEWITHLANGUAGE 0x36
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#define TAG_TEXTWITHOUTLANGUAGE 0x41
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#define TAG_NAMEWITHOUTLANGUAGE 0x42
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#define TAG_KEYWORD 0x44
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#define TAG_URI 0x45
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#define TAG_URISCHEME 0x46
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#define TAG_CHARSET 0x47
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#define TAG_NATURALLANGUAGE 0x48
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#define TAG_MIMEMEDIATYPE 0x49
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static const value_string tag_vals[] = {
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/* Delimiter tags */
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{ 0x01, "Operation attributes" },
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{ 0x02, "Job attributes" },
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{ TAG_END_OF_ATTRIBUTES, "End of attributes" },
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{ 0x04, "Printer attributes" },
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{ 0x05, "Unsupported attributes" },
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/* Value tags */
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{ 0x10, "Unsupported" },
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{ 0x12, "Unknown" },
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{ 0x13, "No value" },
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{ TAG_INTEGER, "Integer" },
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{ TAG_BOOLEAN, "Boolean" },
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{ TAG_ENUM, "Enum" },
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{ TAG_OCTETSTRING, "Octet string" },
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{ TAG_DATETIME, "Date/Time" },
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{ TAG_RESOLUTION, "Resolution" },
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{ TAG_RANGEOFINTEGER, "Range of integer" },
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{ TAG_TEXTWITHLANGUAGE, "Text with language" },
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{ TAG_NAMEWITHLANGUAGE, "Name with language" },
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{ TAG_TEXTWITHOUTLANGUAGE, "Text without language" },
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{ TAG_NAMEWITHOUTLANGUAGE, "Name without language" },
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{ TAG_KEYWORD, "Keyword" },
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{ TAG_URI, "URI" },
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{ TAG_URISCHEME, "URI scheme" },
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{ TAG_CHARSET, "Character set" },
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{ TAG_NATURALLANGUAGE, "Natural language" },
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{ TAG_MIMEMEDIATYPE, "MIME media type" },
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{ 0, NULL }
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};
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static int
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parse_attributes(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
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{
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guint8 tag;
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gchar *tag_desc;
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guint16 name_length, value_length;
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proto_tree *as_tree = tree;
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proto_item *tas = NULL;
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int start_offset = offset;
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proto_tree *attr_tree = tree;
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while (IS_DATA_IN_FRAME(offset)) {
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tag = pd[offset];
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tag_desc = val_to_str(tag, tag_vals, "Reserved (0x%02x)");
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if (TAG_TYPE(tag) == TAG_TYPE_DELIMITER) {
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/*
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* If we had an attribute sequence we were
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* working on, we're done with it; set its
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* length to the length of all the stuff
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* we've done so far.
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*/
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if (tas != NULL)
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proto_item_set_len(tas, offset - start_offset);
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/*
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* This tag starts a new attribute sequence;
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* create a new tree under this tag when we see
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* a non-delimiter tag, under which to put
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* those attributes.
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*/
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as_tree = NULL;
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attr_tree = tree;
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/*
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* Remember the offset at which this attribute
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* sequence started, so we can use it to compute
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* its length when it's finished.
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*/
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start_offset = offset;
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/*
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* Now create a new item for this tag.
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*/
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tas = proto_tree_add_text(tree, offset, 1,
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"%s", tag_desc);
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offset++;
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if (tag == TAG_END_OF_ATTRIBUTES) {
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/*
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* No more attributes.
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*/
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break;
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}
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} else {
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/*
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* Value tag - get the name length.
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*/
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if (!BYTES_ARE_IN_FRAME(offset + 1, 2)) {
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/*
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* We ran past the end of the frame.
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* Quit (we need to be able to handle
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* stuff that crosses frames to do more)
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*/
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break;
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}
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name_length = pntohs(&pd[offset + 1]);
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/*
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* OK, get the value length.
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*/
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if (!BYTES_ARE_IN_FRAME(offset + 1 + 2, name_length)) {
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/*
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* We ran past the end of the frame.
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* Quit (we need to be able to handle
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* stuff that crosses frames to do more)
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*/
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break;
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}
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value_length = pntohs(&pd[offset + 1 + 2 + name_length]);
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/*
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* OK, does the value run past the end of the
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* frame?
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*/
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if (!BYTES_ARE_IN_FRAME(offset + 1 + 2 + name_length + 2,
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value_length)) {
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/*
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* We ran past the end of the frame.
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* Quit (we need to be able to handle
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* stuff that crosses frames to do more)
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*/
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break;
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}
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if (as_tree == NULL) {
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/*
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* OK, there's an attribute to hang
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* under a delimiter tag, but we don't
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* have a tree for that tag yet; create
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* a tree.
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*/
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as_tree = proto_item_add_subtree(tas,
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ett_ipp_as);
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attr_tree = as_tree;
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}
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switch (TAG_TYPE(tag)) {
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case TAG_TYPE_INTEGER:
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if (name_length != 0) {
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/*
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* This is an attribute, not
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* an additional value, so
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* start a tree for it.
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*/
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attr_tree = add_integer_tree(as_tree,
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pd, offset, name_length,
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value_length);
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}
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add_integer_value(tag, tag_desc, attr_tree, pd,
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offset, name_length, value_length);
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break;
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case TAG_TYPE_OCTETSTRING:
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if (name_length != 0) {
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/*
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* This is an attribute, not
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* an additional value, so
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* start a tree for it.
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*/
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attr_tree = add_octetstring_tree(as_tree,
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pd, offset, name_length,
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value_length);
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}
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add_octetstring_value(tag, tag_desc,
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attr_tree, pd, offset, name_length,
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value_length);
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break;
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case TAG_TYPE_CHARSTRING:
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if (name_length != 0) {
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/*
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* This is an attribute, not
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* an additional value, so
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* start a tree for it.
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*/
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attr_tree = add_charstring_tree(as_tree,
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pd, offset, name_length,
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value_length);
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}
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add_charstring_value(tag, tag_desc,
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attr_tree, pd, offset, name_length,
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value_length);
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break;
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}
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offset += 1 + 2 + name_length + 2 + value_length;
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}
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}
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return offset;
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}
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static proto_tree *
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add_integer_tree(proto_tree *tree, const u_char *pd, int offset,
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guint name_length, guint value_length)
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{
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proto_item *ti;
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|
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if (value_length != 4) {
|
|
ti = proto_tree_add_text(tree, offset,
|
|
1 + 2 + name_length + 2 + value_length,
|
|
"%.*s: Invalid integer (length is %u, should be 4)",
|
|
name_length, &pd[offset + 1 + 2],
|
|
value_length);
|
|
} else {
|
|
ti = proto_tree_add_text(tree, offset,
|
|
1 + 2 + name_length + 2 + value_length,
|
|
"%.*s: %u",
|
|
name_length, &pd[offset + 1 + 2],
|
|
pntohl(&pd[1 + 2 + name_length + 2]));
|
|
}
|
|
return proto_item_add_subtree(ti, ett_ipp_attr);
|
|
}
|
|
|
|
static void
|
|
add_integer_value(guint tag, gchar *tag_desc, proto_tree *tree,
|
|
const u_char *pd, int offset, guint name_length, guint value_length)
|
|
{
|
|
offset = add_value_head(tag, tag_desc, tree, pd, offset,
|
|
name_length, value_length);
|
|
if (value_length == 4) {
|
|
proto_tree_add_text(tree, offset, value_length,
|
|
"Value: %u", pntohl(&pd[1 + 2 + name_length + 2]));
|
|
}
|
|
}
|
|
|
|
static proto_tree *
|
|
add_octetstring_tree(proto_tree *tree, const u_char *pd, int offset,
|
|
guint name_length, guint value_length)
|
|
{
|
|
proto_item *ti;
|
|
|
|
ti = proto_tree_add_text(tree, offset,
|
|
1 + 2 + name_length + 2 + value_length,
|
|
"%.*s: %s",
|
|
name_length,
|
|
&pd[offset + 1 + 2]);
|
|
bytes_to_str(&pd[offset + 1 + 2 + name_length + 2], value_length);
|
|
return proto_item_add_subtree(ti, ett_ipp_attr);
|
|
}
|
|
|
|
static void
|
|
add_octetstring_value(guint tag, gchar *tag_desc, proto_tree *tree,
|
|
const u_char *pd, int offset, guint name_length, guint value_length)
|
|
{
|
|
offset = add_value_head(tag, tag_desc, tree, pd, offset,
|
|
name_length, value_length);
|
|
proto_tree_add_text(tree, offset, value_length,
|
|
"Value: %s", bytes_to_str(&pd[offset], value_length));
|
|
}
|
|
|
|
static proto_tree *
|
|
add_charstring_tree(proto_tree *tree, const u_char *pd, int offset,
|
|
guint name_length, guint value_length)
|
|
{
|
|
proto_item *ti;
|
|
|
|
ti = proto_tree_add_text(tree, offset,
|
|
1 + 2 + name_length + 2 + value_length,
|
|
"%.*s: %.*s",
|
|
name_length, &pd[offset + 1 + 2],
|
|
value_length, &pd[offset + 1 + 2 + name_length + 2]);
|
|
return proto_item_add_subtree(ti, ett_ipp_attr);
|
|
}
|
|
|
|
static void
|
|
add_charstring_value(guint tag, gchar *tag_desc, proto_tree *tree,
|
|
const u_char *pd, int offset, guint name_length, guint value_length)
|
|
{
|
|
offset = add_value_head(tag, tag_desc, tree, pd, offset,
|
|
name_length, value_length);
|
|
proto_tree_add_text(tree, offset, value_length,
|
|
"Value: %.*s", value_length, &pd[offset]);
|
|
}
|
|
|
|
static int
|
|
add_value_head(guint tag, gchar *tag_desc, proto_tree *tree,
|
|
const u_char *pd, int offset, guint name_length, guint value_length)
|
|
{
|
|
proto_tree_add_text(tree, offset, 1, "Tag: %s", tag_desc);
|
|
offset += 1;
|
|
proto_tree_add_text(tree, offset, 2, "Name length: %u",
|
|
name_length);
|
|
offset += 2;
|
|
if (name_length != 0) {
|
|
proto_tree_add_text(tree, offset, name_length,
|
|
"Name: %.*s", name_length, &pd[offset]);
|
|
}
|
|
offset += name_length;
|
|
proto_tree_add_text(tree, 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");
|
|
/* proto_register_field_array(proto_ipp, hf, array_length(hf));*/
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|