summaryrefslogtreecommitdiff
path: root/src/pluto/packet.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/pluto/packet.c')
-rw-r--r--src/pluto/packet.c1242
1 files changed, 0 insertions, 1242 deletions
diff --git a/src/pluto/packet.c b/src/pluto/packet.c
deleted file mode 100644
index 35fc4afcc..000000000
--- a/src/pluto/packet.c
+++ /dev/null
@@ -1,1242 +0,0 @@
-/* parsing packets: formats and tools
- * Copyright (C) 1997 Angelos D. Keromytis.
- * Copyright (C) 1998-2001 D. Hugh Redelmeier.
- *
- * 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. See <http://www.fsf.org/copyleft/gpl.txt>.
- *
- * 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.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stddef.h>
-#include <netinet/in.h>
-#include <string.h>
-
-#include <freeswan.h>
-
-#include "constants.h"
-#include "defs.h"
-#include "log.h"
-#include "packet.h"
-#include "whack.h" /* for RC_LOG_SERIOUS */
-
-/* ISAKMP Header: for all messages
- * layout from RFC 2408 "ISAKMP" section 3.1
- * 1 2 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Initiator !
- * ! Cookie !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Responder !
- * ! Cookie !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Next Payload ! MjVer ! MnVer ! Exchange Type ! Flags !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Message ID !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Length !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- */
-
-static field_desc isa_fields[] = {
- { ft_raw, COOKIE_SIZE, "initiator cookie", NULL },
- { ft_raw, COOKIE_SIZE, "responder cookie", NULL },
- { ft_enum, 8/BITS_PER_BYTE, "next payload type", &payload_names },
- { ft_enum, 8/BITS_PER_BYTE, "ISAKMP version", &version_names },
- { ft_enum, 8/BITS_PER_BYTE, "exchange type", &exchange_names },
- { ft_set, 8/BITS_PER_BYTE, "flags", flag_bit_names },
- { ft_raw, 32/BITS_PER_BYTE, "message ID", NULL },
- { ft_len, 32/BITS_PER_BYTE, "length", NULL },
- { ft_end, 0, NULL, NULL }
-};
-
-struct_desc isakmp_hdr_desc = { "ISAKMP Message", isa_fields, sizeof(struct isakmp_hdr) };
-
-/* Generic portion of all ISAKMP payloads.
- * layout from RFC 2408 "ISAKMP" section 3.2
- * This describes the first 32-bit chunk of all payloads.
- * The previous next payload depends on the actual payload type.
- * 1 2 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Next Payload ! RESERVED ! Payload Length !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- */
-
-static field_desc isag_fields[] = {
- { ft_enum, 8/BITS_PER_BYTE, "next payload type", &payload_names },
- { ft_mbz, 8/BITS_PER_BYTE, NULL, NULL },
- { ft_len, 16/BITS_PER_BYTE, "length", NULL },
- { ft_end, 0, NULL, NULL }
-};
-
-struct_desc isakmp_generic_desc = { "ISAKMP Generic Payload", isag_fields, sizeof(struct isakmp_generic) };
-
-
-/* ISAKMP Data Attribute (generic representation within payloads)
- * layout from RFC 2408 "ISAKMP" section 3.3
- * This is not a payload type.
- * In TLV format, this is followed by a value field.
- * 1 2 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * !A! Attribute Type ! AF=0 Attribute Length !
- * !F! ! AF=1 Attribute Value !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * . AF=0 Attribute Value .
- * . AF=1 Not Transmitted .
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- */
-
-/* Oakley Attributes */
-static field_desc isaat_fields_oakley[] = {
- { ft_af_enum, 16/BITS_PER_BYTE, "af+type", &oakley_attr_names },
- { ft_lv, 16/BITS_PER_BYTE, "length/value", NULL },
- { ft_end, 0, NULL, NULL }
-};
-
-struct_desc isakmp_oakley_attribute_desc = {
- "ISAKMP Oakley attribute",
- isaat_fields_oakley, sizeof(struct isakmp_attribute) };
-
-/* IPsec DOI Attributes */
-static field_desc isaat_fields_ipsec[] = {
- { ft_af_enum, 16/BITS_PER_BYTE, "af+type", &ipsec_attr_names },
- { ft_lv, 16/BITS_PER_BYTE, "length/value", NULL },
- { ft_end, 0, NULL, NULL }
-};
-
-struct_desc isakmp_ipsec_attribute_desc = {
- "ISAKMP IPsec DOI attribute",
- isaat_fields_ipsec, sizeof(struct isakmp_attribute) };
-
-/* Mode Config Attributes */
-static field_desc isaat_fields_modecfg[] = {
- { ft_af_loose_enum, 16/BITS_PER_BYTE, "ModeCfg attr type", &modecfg_attr_names },
- { ft_lv, 16/BITS_PER_BYTE, "length/value", NULL },
- { ft_end, 0, NULL, NULL }
-};
-
-struct_desc isakmp_modecfg_attribute_desc = {
- "ISAKMP ModeCfg attribute",
- isaat_fields_modecfg, sizeof(struct isakmp_attribute) };
-
-/* ISAKMP Security Association Payload
- * layout from RFC 2408 "ISAKMP" section 3.4
- * A variable length Situation follows.
- * Previous next payload: ISAKMP_NEXT_SA
- * 1 2 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Next Payload ! RESERVED ! Payload Length !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Domain of Interpretation (DOI) !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! !
- * ~ Situation ~
- * ! !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- */
-static field_desc isasa_fields[] = {
- { ft_enum, 8/BITS_PER_BYTE, "next payload type", &payload_names },
- { ft_mbz, 8/BITS_PER_BYTE, NULL, NULL },
- { ft_len, 16/BITS_PER_BYTE, "length", NULL },
- { ft_enum, 32/BITS_PER_BYTE, "DOI", &doi_names },
- { ft_end, 0, NULL, NULL }
-};
-
-struct_desc isakmp_sa_desc = { "ISAKMP Security Association Payload", isasa_fields, sizeof(struct isakmp_sa) };
-
-static field_desc ipsec_sit_field[] = {
- { ft_set, 32/BITS_PER_BYTE, "IPsec DOI SIT", &sit_bit_names },
- { ft_end, 0, NULL, NULL }
-};
-
-struct_desc ipsec_sit_desc = { "IPsec DOI SIT", ipsec_sit_field, sizeof(u_int32_t) };
-
-/* ISAKMP Proposal Payload
- * layout from RFC 2408 "ISAKMP" section 3.5
- * A variable length SPI follows.
- * Previous next payload: ISAKMP_NEXT_P
- * 1 2 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Next Payload ! RESERVED ! Payload Length !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Proposal # ! Protocol-Id ! SPI Size !# of Transforms!
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! SPI (variable) !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- */
-static field_desc isap_fields[] = {
- { ft_enum, 8/BITS_PER_BYTE, "next payload type", &payload_names },
- { ft_mbz, 8/BITS_PER_BYTE, NULL, NULL },
- { ft_len, 16/BITS_PER_BYTE, "length", NULL },
- { ft_nat, 8/BITS_PER_BYTE, "proposal number", NULL },
- { ft_enum, 8/BITS_PER_BYTE, "protocol ID", &protocol_names },
- { ft_nat, 8/BITS_PER_BYTE, "SPI size", NULL },
- { ft_nat, 8/BITS_PER_BYTE, "number of transforms", NULL },
- { ft_end, 0, NULL, NULL }
-};
-
-struct_desc isakmp_proposal_desc = { "ISAKMP Proposal Payload", isap_fields, sizeof(struct isakmp_proposal) };
-
-/* ISAKMP Transform Payload
- * layout from RFC 2408 "ISAKMP" section 3.6
- * Variable length SA Attributes follow.
- * Previous next payload: ISAKMP_NEXT_T
- * 1 2 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Next Payload ! RESERVED ! Payload Length !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Transform # ! Transform-Id ! RESERVED2 !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! !
- * ~ SA Attributes ~
- * ! !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- */
-
-/* PROTO_ISAKMP */
-static field_desc isat_fields_isakmp[] = {
- { ft_enum, 8/BITS_PER_BYTE, "next payload type", &payload_names },
- { ft_mbz, 8/BITS_PER_BYTE, NULL, NULL },
- { ft_len, 16/BITS_PER_BYTE, "length", NULL },
- { ft_nat, 8/BITS_PER_BYTE, "transform number", NULL },
- { ft_enum, 8/BITS_PER_BYTE, "transform ID", &isakmp_transformid_names },
- { ft_mbz, 16/BITS_PER_BYTE, NULL, NULL },
- { ft_end, 0, NULL, NULL }
-};
-
-struct_desc isakmp_isakmp_transform_desc = {
- "ISAKMP Transform Payload (ISAKMP)",
- isat_fields_isakmp, sizeof(struct isakmp_transform) };
-
-/* PROTO_IPSEC_AH */
-static field_desc isat_fields_ah[] = {
- { ft_enum, 8/BITS_PER_BYTE, "next payload type", &payload_names },
- { ft_mbz, 8/BITS_PER_BYTE, NULL, NULL },
- { ft_len, 16/BITS_PER_BYTE, "length", NULL },
- { ft_nat, 8/BITS_PER_BYTE, "transform number", NULL },
- { ft_enum, 8/BITS_PER_BYTE, "transform ID", &ah_transform_names },
- { ft_mbz, 16/BITS_PER_BYTE, NULL, NULL },
- { ft_end, 0, NULL, NULL }
-};
-
-struct_desc isakmp_ah_transform_desc = {
- "ISAKMP Transform Payload (AH)",
- isat_fields_ah, sizeof(struct isakmp_transform) };
-
-/* PROTO_IPSEC_ESP */
-static field_desc isat_fields_esp[] = {
- { ft_enum, 8/BITS_PER_BYTE, "next payload type", &payload_names },
- { ft_mbz, 8/BITS_PER_BYTE, NULL, NULL },
- { ft_len, 16/BITS_PER_BYTE, "length", NULL },
- { ft_nat, 8/BITS_PER_BYTE, "transform number", NULL },
- { ft_enum, 8/BITS_PER_BYTE, "transform ID", &esp_transform_names },
- { ft_mbz, 16/BITS_PER_BYTE, NULL, NULL },
- { ft_end, 0, NULL, NULL }
-};
-
-struct_desc isakmp_esp_transform_desc = {
- "ISAKMP Transform Payload (ESP)",
- isat_fields_esp, sizeof(struct isakmp_transform) };
-
-/* PROTO_IPCOMP */
-static field_desc isat_fields_ipcomp[] = {
- { ft_enum, 8/BITS_PER_BYTE, "next payload type", &payload_names },
- { ft_mbz, 8/BITS_PER_BYTE, NULL, NULL },
- { ft_len, 16/BITS_PER_BYTE, "length", NULL },
- { ft_nat, 8/BITS_PER_BYTE, "transform number", NULL },
- { ft_enum, 8/BITS_PER_BYTE, "transform ID", &ipcomp_transformid_names },
- { ft_mbz, 16/BITS_PER_BYTE, NULL, NULL },
- { ft_end, 0, NULL, NULL }
-};
-
-struct_desc isakmp_ipcomp_transform_desc = {
- "ISAKMP Transform Payload (COMP)",
- isat_fields_ipcomp, sizeof(struct isakmp_transform) };
-
-
-/* ISAKMP Key Exchange Payload: no fixed fields beyond the generic ones.
- * layout from RFC 2408 "ISAKMP" section 3.7
- * Variable Key Exchange Data follow the generic fields.
- * Previous next payload: ISAKMP_NEXT_KE
- * 1 2 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Next Payload ! RESERVED ! Payload Length !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! !
- * ~ Key Exchange Data ~
- * ! !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- */
-struct_desc isakmp_keyex_desc = { "ISAKMP Key Exchange Payload", isag_fields, sizeof(struct isakmp_generic) };
-
-/* ISAKMP Identification Payload
- * layout from RFC 2408 "ISAKMP" section 3.8
- * See "struct identity" declared later.
- * Variable length Identification Data follow.
- * Previous next payload: ISAKMP_NEXT_ID
- * 1 2 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Next Payload ! RESERVED ! Payload Length !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! ID Type ! DOI Specific ID Data !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! !
- * ~ Identification Data ~
- * ! !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- */
-static field_desc isaid_fields[] = {
- { ft_enum, 8/BITS_PER_BYTE, "next payload type", &payload_names },
- { ft_mbz, 8/BITS_PER_BYTE, NULL, NULL },
- { ft_len, 16/BITS_PER_BYTE, "length", NULL },
- { ft_enum, 8/BITS_PER_BYTE, "ID type", &ident_names }, /* ??? depends on DOI? */
- { ft_nat, 8/BITS_PER_BYTE, "DOI specific A", NULL }, /* ??? depends on DOI? */
- { ft_nat, 16/BITS_PER_BYTE, "DOI specific B", NULL }, /* ??? depends on DOI? */
- { ft_end, 0, NULL, NULL }
-};
-
-struct_desc isakmp_identification_desc = { "ISAKMP Identification Payload", isaid_fields, sizeof(struct isakmp_id) };
-
-/* IPSEC Identification Payload Content
- * layout from RFC 2407 "IPsec DOI" section 4.6.2
- * See struct isakmp_id declared earlier.
- * Note: Hashing skips the ISAKMP generic payload header
- * Variable length Identification Data follow.
- * 1 2 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Next Payload ! RESERVED ! Payload Length !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! ID Type ! Protocol ID ! Port !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ~ Identification Data ~
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- */
-static field_desc isaiid_fields[] = {
- { ft_enum, 8/BITS_PER_BYTE, "next payload type", &payload_names },
- { ft_mbz, 8/BITS_PER_BYTE, NULL, NULL },
- { ft_len, 16/BITS_PER_BYTE, "length", NULL },
- { ft_enum, 8/BITS_PER_BYTE, "ID type", &ident_names },
- { ft_nat, 8/BITS_PER_BYTE, "Protocol ID", NULL }, /* ??? UDP/TCP or 0? */
- { ft_nat, 16/BITS_PER_BYTE, "port", NULL },
- { ft_end, 0, NULL, NULL }
-};
-
-struct_desc isakmp_ipsec_identification_desc = { "ISAKMP Identification Payload (IPsec DOI)", isaiid_fields, sizeof(struct isakmp_ipsec_id) };
-
-/* ISAKMP Certificate Payload: oddball fixed field beyond the generic ones.
- * layout from RFC 2408 "ISAKMP" section 3.9
- * Variable length Certificate Data follow the generic fields.
- * Previous next payload: ISAKMP_NEXT_CERT.
- * 1 2 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Next Payload ! RESERVED ! Payload Length !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Cert Encoding ! !
- * +-+-+-+-+-+-+-+-+ !
- * ~ Certificate Data ~
- * ! !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- */
-static field_desc isacert_fields[] = {
- { ft_enum, 8/BITS_PER_BYTE, "next payload type", &payload_names },
- { ft_mbz, 8/BITS_PER_BYTE, NULL, NULL },
- { ft_len, 16/BITS_PER_BYTE, "length", NULL },
- { ft_enum, 8/BITS_PER_BYTE, "cert encoding", &cert_type_names },
- { ft_end, 0, NULL, NULL }
-};
-
-/* Note: the size field of isakmp_ipsec_certificate_desc cannot be
- * sizeof(struct isakmp_cert) because that will rounded up for padding.
- */
- struct_desc isakmp_ipsec_certificate_desc = { "ISAKMP Certificate Payload", isacert_fields, ISAKMP_CERT_SIZE };
-
-/* ISAKMP Certificate Request Payload: oddball field beyond the generic ones.
- * layout from RFC 2408 "ISAKMP" section 3.10
- * Variable length Certificate Types and Certificate Authorities follow.
- * Previous next payload: ISAKMP_NEXT_CR.
- * 1 2 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Next Payload ! RESERVED ! Payload Length !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Cert. Type ! !
- * +-+-+-+-+-+-+-+-+ !
- * ~ Certificate Authority ~
- * ! !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- */
-static field_desc isacr_fields[] = {
- { ft_enum, 8/BITS_PER_BYTE, "next payload type", &payload_names },
- { ft_mbz, 8/BITS_PER_BYTE, NULL, NULL },
- { ft_len, 16/BITS_PER_BYTE, "length", NULL },
- { ft_enum, 8/BITS_PER_BYTE, "cert type", &cert_type_names },
- { ft_end, 0, NULL, NULL }
-};
-
-/* Note: the size field of isakmp_ipsec_cert_req_desc cannot be
- * sizeof(struct isakmp_cr) because that will rounded up for padding.
- */
-struct_desc isakmp_ipsec_cert_req_desc = { "ISAKMP Certificate RequestPayload", isacr_fields, ISAKMP_CR_SIZE };
-
-/* ISAKMP Hash Payload: no fixed fields beyond the generic ones.
- * layout from RFC 2408 "ISAKMP" section 3.11
- * Variable length Hash Data follow.
- * Previous next payload: ISAKMP_NEXT_HASH.
- * 1 2 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Next Payload ! RESERVED ! Payload Length !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! !
- * ~ Hash Data ~
- * ! !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- */
-struct_desc isakmp_hash_desc = { "ISAKMP Hash Payload", isag_fields, sizeof(struct isakmp_generic) };
-
-/* ISAKMP Signature Payload: no fixed fields beyond the generic ones.
- * layout from RFC 2408 "ISAKMP" section 3.12
- * Variable length Signature Data follow.
- * Previous next payload: ISAKMP_NEXT_SIG.
- * 1 2 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Next Payload ! RESERVED ! Payload Length !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! !
- * ~ Signature Data ~
- * ! !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- */
-struct_desc isakmp_signature_desc = { "ISAKMP Signature Payload", isag_fields, sizeof(struct isakmp_generic) };
-
-/* ISAKMP Nonce Payload: no fixed fields beyond the generic ones.
- * layout from RFC 2408 "ISAKMP" section 3.13
- * Variable length Nonce Data follow.
- * Previous next payload: ISAKMP_NEXT_NONCE.
- * 1 2 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Next Payload ! RESERVED ! Payload Length !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! !
- * ~ Nonce Data ~
- * ! !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- */
-struct_desc isakmp_nonce_desc = { "ISAKMP Nonce Payload", isag_fields, sizeof(struct isakmp_generic) };
-
-/* ISAKMP Notification Payload
- * layout from RFC 2408 "ISAKMP" section 3.14
- * This is followed by a variable length SPI
- * and then possibly by variable length Notification Data.
- * Previous next payload: ISAKMP_NEXT_N
- * 1 2 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Next Payload ! RESERVED ! Payload Length !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Domain of Interpretation (DOI) !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Protocol-ID ! SPI Size ! Notify Message Type !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! !
- * ~ Security Parameter Index (SPI) ~
- * ! !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! !
- * ~ Notification Data ~
- * ! !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- */
-static field_desc isan_fields[] = {
- { ft_enum, 8/BITS_PER_BYTE, "next payload type", &payload_names },
- { ft_mbz, 8/BITS_PER_BYTE, NULL, NULL },
- { ft_len, 16/BITS_PER_BYTE, "length", NULL },
- { ft_enum, 32/BITS_PER_BYTE, "DOI", &doi_names },
- { ft_nat, 8/BITS_PER_BYTE, "protocol ID", NULL }, /* ??? really enum: ISAKMP, IPSEC, ESP, ... */
- { ft_nat, 8/BITS_PER_BYTE, "SPI size", NULL },
- { ft_enum, 16/BITS_PER_BYTE, "Notify Message Type", &notification_names },
- { ft_end, 0, NULL, NULL }
-};
-
-struct_desc isakmp_notification_desc = { "ISAKMP Notification Payload", isan_fields, sizeof(struct isakmp_notification) };
-
-/* ISAKMP Delete Payload
- * layout from RFC 2408 "ISAKMP" section 3.15
- * This is followed by a variable length SPI.
- * Previous next payload: ISAKMP_NEXT_D
- * 1 2 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Next Payload ! RESERVED ! Payload Length !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Domain of Interpretation (DOI) !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Protocol-Id ! SPI Size ! # of SPIs !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! !
- * ~ Security Parameter Index(es) (SPI) ~
- * ! !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- */
-static field_desc isad_fields[] = {
- { ft_enum, 8/BITS_PER_BYTE, "next payload type", &payload_names },
- { ft_mbz, 8/BITS_PER_BYTE, NULL, NULL },
- { ft_len, 16/BITS_PER_BYTE, "length", NULL },
- { ft_enum, 32/BITS_PER_BYTE, "DOI", &doi_names },
- { ft_nat, 8/BITS_PER_BYTE, "protocol ID", NULL }, /* ??? really enum: ISAKMP, IPSEC */
- { ft_nat, 8/BITS_PER_BYTE, "SPI size", NULL },
- { ft_nat, 16/BITS_PER_BYTE, "number of SPIs", NULL },
- { ft_end, 0, NULL, NULL }
-};
-
-struct_desc isakmp_delete_desc = { "ISAKMP Delete Payload", isad_fields, sizeof(struct isakmp_delete) };
-
-/* ISAKMP Vendor ID Payload
- * layout from RFC 2408 "ISAKMP" section 3.15
- * This is followed by a variable length VID.
- * Previous next payload: ISAKMP_NEXT_VID
- * 1 2 3
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Next Payload ! RESERVED ! Payload Length !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! !
- * ~ Vendor ID (VID) ~
- * ! !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- */
-struct_desc isakmp_vendor_id_desc = { "ISAKMP Vendor ID Payload", isag_fields, sizeof(struct isakmp_generic) };
-
-/* MODECFG */
-/*
- * From draft-dukes-ike-mode-cfg
-3.2. Attribute Payload
- 1 2 3
- 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- ! Next Payload ! RESERVED ! Payload Length !
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- ! Type ! RESERVED ! Identifier !
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- ! !
- ~ Attributes ~
- ! !
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-*/
-static field_desc isaattr_fields[] = {
- { ft_enum, 8/BITS_PER_BYTE, "next payload type", &payload_names },
- { ft_mbz, 8/BITS_PER_BYTE, NULL, NULL },
- { ft_len, 16/BITS_PER_BYTE, "length", NULL },
- { ft_enum, 8/BITS_PER_BYTE, "Attr Msg Type", &attr_msg_type_names },
- { ft_mbz, 8/BITS_PER_BYTE, NULL, NULL },
- { ft_nat, 16/BITS_PER_BYTE, "Identifier", NULL },
- { ft_end, 0, NULL, NULL }
-};
-
-struct_desc isakmp_attr_desc = { "ISAKMP Mode Attribute", isaattr_fields, sizeof(struct isakmp_mode_attr) };
-
-/* ISAKMP NAT-Traversal NAT-D
- * layout from draft-ietf-ipsec-nat-t-ike-01.txt section 3.2
- *
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Next Payload ! RESERVED ! Payload Length !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! HASH of the address and port !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- */
-struct_desc isakmp_nat_d = { "ISAKMP NAT-D Payload", isag_fields, sizeof(struct isakmp_generic) };
-
-/* ISAKMP NAT-Traversal NAT-OA
- * layout from draft-ietf-ipsec-nat-t-ike-01.txt section 4.2
- *
- * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! Next Payload ! RESERVED ! Payload Length !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! ID Type ! RESERVED ! RESERVED !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- * ! IPv4 (4 octets) or IPv6 address (16 octets) !
- * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- */
-static field_desc isanat_oa_fields[] = {
- { ft_enum, 8/BITS_PER_BYTE, "next payload type", &payload_names },
- { ft_mbz, 8/BITS_PER_BYTE, NULL, NULL },
- { ft_len, 16/BITS_PER_BYTE, "length", NULL },
- { ft_enum, 8/BITS_PER_BYTE, "ID type", &ident_names },
- { ft_mbz, 24/BITS_PER_BYTE, NULL, NULL },
- { ft_end, 0, NULL, NULL }
-};
-
-struct_desc isakmp_nat_oa = { "ISAKMP NAT-OA Payload", isanat_oa_fields, sizeof(struct isakmp_nat_oa) };
-
-/* descriptor for each payload type
- *
- * There is a slight problem in that some payloads differ, depending
- * on the mode. Since this is table only used for top-level payloads,
- * Proposal and Transform payloads need not be handled.
- * That leaves only Identification payloads as a problem.
- * We make all these entries NULL
- */
-struct_desc *const payload_descs[ISAKMP_NEXT_ROOF] = {
- NULL, /* 0 ISAKMP_NEXT_NONE (No other payload following) */
- &isakmp_sa_desc, /* 1 ISAKMP_NEXT_SA (Security Association) */
- NULL, /* 2 ISAKMP_NEXT_P (Proposal) */
- NULL, /* 3 ISAKMP_NEXT_T (Transform) */
- &isakmp_keyex_desc, /* 4 ISAKMP_NEXT_KE (Key Exchange) */
- NULL, /* 5 ISAKMP_NEXT_ID (Identification) */
- &isakmp_ipsec_certificate_desc, /* 6 ISAKMP_NEXT_CERT (Certificate) */
- &isakmp_ipsec_cert_req_desc, /* 7 ISAKMP_NEXT_CR (Certificate Request) */
- &isakmp_hash_desc, /* 8 ISAKMP_NEXT_HASH (Hash) */
- &isakmp_signature_desc, /* 9 ISAKMP_NEXT_SIG (Signature) */
- &isakmp_nonce_desc, /* 10 ISAKMP_NEXT_NONCE (Nonce) */
- &isakmp_notification_desc, /* 11 ISAKMP_NEXT_N (Notification) */
- &isakmp_delete_desc, /* 12 ISAKMP_NEXT_D (Delete) */
- &isakmp_vendor_id_desc, /* 13 ISAKMP_NEXT_VID (Vendor ID) */
- &isakmp_attr_desc, /* 14 ISAKMP_NEXT_ATTR (Mode Config) */
- NULL, /* 15 */
- NULL, /* 16 */
- NULL, /* 17 */
- NULL, /* 18 */
- NULL, /* 19 */
- &isakmp_nat_d, /* 20=130 ISAKMP_NEXT_NATD (NAT-D) */
- &isakmp_nat_oa, /* 20=131 ISAKMP_NEXT_NATOA (NAT-OA) */
-};
-
-void
-init_pbs(pb_stream *pbs, u_int8_t *start, size_t len, const char *name)
-{
- pbs->container = NULL;
- pbs->desc = NULL;
- pbs->name = name;
- pbs->start = pbs->cur = start;
- pbs->roof = start + len;
- pbs->lenfld = NULL;
- pbs->lenfld_desc = NULL;
-}
-
-#ifdef DEBUG
-
-/* print a host struct
- *
- * This code assumes that the network and host structure
- * members have the same alignment and size! This requires
- * that all padding be explicit.
- */
-void
-DBG_print_struct(const char *label, const void *struct_ptr
-, struct_desc *sd, bool len_meaningful)
-{
- bool immediate = FALSE;
- const u_int8_t *inp = struct_ptr;
- field_desc *fp;
-
- DBG_log("%s%s:", label, sd->name);
-
- for (fp = sd->fields; fp->field_type != ft_end; fp++)
- {
- int i = fp->size;
- u_int32_t n = 0;
-
- switch (fp->field_type)
- {
- case ft_mbz: /* must be zero */
- inp += i;
- break;
- case ft_nat: /* natural number (may be 0) */
- case ft_len: /* length of this struct and any following crud */
- case ft_lv: /* length/value field of attribute */
- case ft_enum: /* value from an enumeration */
- case ft_loose_enum: /* value from an enumeration with only some names known */
- case ft_af_enum: /* Attribute Format + value from an enumeration */
- case ft_af_loose_enum: /* Attribute Format + value from an enumeration */
- case ft_set: /* bits representing set */
- switch (i)
- {
- case 8/BITS_PER_BYTE:
- n = *(const u_int8_t *)inp;
- break;
- case 16/BITS_PER_BYTE:
- n = *(const u_int16_t *)inp;
- break;
- case 32/BITS_PER_BYTE:
- n = *(const u_int32_t *)inp;
- break;
- default:
- bad_case(i);
- }
- switch (fp->field_type)
- {
- case ft_len: /* length of this struct and any following crud */
- case ft_lv: /* length/value field of attribute */
- if (!immediate && !len_meaningful)
- break;
- /* FALL THROUGH */
- case ft_nat: /* natural number (may be 0) */
- DBG_log(" %s: %lu", fp->name, (unsigned long)n);
- break;
- case ft_af_enum: /* Attribute Format + value from an enumeration */
- case ft_af_loose_enum: /* Attribute Format + value from an enumeration */
- if ((n & ISAKMP_ATTR_AF_MASK) == ISAKMP_ATTR_AF_TV)
- immediate = TRUE;
- /* FALL THROUGH */
- case ft_enum: /* value from an enumeration */
- case ft_loose_enum: /* value from an enumeration with only some names known */
- DBG_log(" %s: %s", fp->name, enum_show(fp->desc, n));
- break;
- case ft_set: /* bits representing set */
- DBG_log(" %s: %s", fp->name, bitnamesof(fp->desc, n));
- break;
- default:
- bad_case(fp->field_type);
- }
- inp += i;
- break;
-
- case ft_raw: /* bytes to be left in network-order */
- {
- char m[50]; /* arbitrary limit on name width in log */
-
- snprintf(m, sizeof(m), " %s:", fp->name);
- DBG_dump(m, inp, i);
- inp += i;
- }
- break;
- default:
- bad_case(fp->field_type);
- }
- }
-}
-
-static void
-DBG_prefix_print_struct(const pb_stream *pbs
-, const char *label, const void *struct_ptr
-, struct_desc *sd, bool len_meaningful)
-{
- /* print out a title, with a prefix of asterisks to show
- * the nesting level.
- */
- char space[40]; /* arbitrary limit on label+flock-of-* */
- size_t len = strlen(label);
-
- if (sizeof(space) <= len)
- {
- DBG_print_struct(label, struct_ptr, sd, len_meaningful);
- }
- else
- {
- const pb_stream *p = pbs;
- char *pre = &space[sizeof(space) - (len + 1)];
-
- strcpy(pre, label);
-
- /* put at least one * out */
- for (;;)
- {
- if (pre <= space)
- break;
- *--pre = '*';
- if (p == NULL)
- break;
- p = p->container;
- }
- DBG_print_struct(pre, struct_ptr, sd, len_meaningful);
- }
-}
-
-#endif
-
-/* "parse" a network struct into a host struct.
- *
- * This code assumes that the network and host structure
- * members have the same alignment and size! This requires
- * that all padding be explicit.
- *
- * If obj_pbs is supplied, a new pb_stream is created for the
- * variable part of the structure (this depends on their
- * being one length field in the structure). The cursor of this
- * new PBS is set to after the parsed part of the struct.
- *
- * This routine returns TRUE iff it succeeds.
- */
-
-bool
-in_struct(void *struct_ptr, struct_desc *sd
-, pb_stream *ins, pb_stream *obj_pbs)
-{
- err_t ugh = NULL;
- u_int8_t *cur = ins->cur;
-
- if (ins->roof - cur < (ptrdiff_t)sd->size)
- {
- ugh = builddiag("not enough room in input packet for %s", sd->name);
- }
- else
- {
- u_int8_t *roof = cur + sd->size; /* may be changed by a length field */
- u_int8_t *outp = struct_ptr;
- bool immediate = FALSE;
- field_desc *fp;
-
- for (fp = sd->fields; ugh == NULL; fp++)
- {
- size_t i = fp->size;
-
- passert(ins->roof - cur >= (ptrdiff_t)i);
- passert(cur - ins->cur <= (ptrdiff_t)(sd->size - i));
- passert(outp - (cur - ins->cur) == struct_ptr);
-
-#if 0
- DBG(DBG_PARSING, DBG_log("%d %s"
- , (int) (cur - ins->cur), fp->name == NULL? "" : fp->name));
-#endif
- switch (fp->field_type)
- {
- case ft_mbz: /* must be zero */
- for (; i != 0; i--)
- {
- if (*cur++ != 0)
- {
- ugh = builddiag("byte %d of %s must be zero, but is not"
- , (int) (cur - ins->cur), sd->name);
- break;
- }
- *outp++ = '\0'; /* probably redundant */
- }
- break;
-
- case ft_nat: /* natural number (may be 0) */
- case ft_len: /* length of this struct and any following crud */
- case ft_lv: /* length/value field of attribute */
- case ft_enum: /* value from an enumeration */
- case ft_loose_enum: /* value from an enumeration with only some names known */
- case ft_af_enum: /* Attribute Format + value from an enumeration */
- case ft_af_loose_enum: /* Attribute Format + value from an enumeration */
- case ft_set: /* bits representing set */
- {
- u_int32_t n = 0;
-
- for (; i != 0; i--)
- n = (n << BITS_PER_BYTE) | *cur++;
-
- switch (fp->field_type)
- {
- case ft_len: /* length of this struct and any following crud */
- case ft_lv: /* length/value field of attribute */
- {
- u_int32_t len = fp->field_type == ft_len? n
- : immediate? sd->size : n + sd->size;
-
- if (len < sd->size)
- {
- ugh = builddiag("%s of %s is smaller than minimum"
- , fp->name, sd->name);
- }
- else if (pbs_left(ins) < len)
- {
- ugh = builddiag("%s of %s is larger than can fit"
- , fp->name, sd->name);
- }
- else
- {
- roof = ins->cur + len;
- }
- break;
- }
- case ft_af_loose_enum: /* Attribute Format + value from an enumeration */
- if ((n & ISAKMP_ATTR_AF_MASK) == ISAKMP_ATTR_AF_TV)
- immediate = TRUE;
- break;
- case ft_af_enum: /* Attribute Format + value from an enumeration */
- if ((n & ISAKMP_ATTR_AF_MASK) == ISAKMP_ATTR_AF_TV)
- immediate = TRUE;
- /* FALL THROUGH */
- case ft_enum: /* value from an enumeration */
- if (enum_name(fp->desc, n) == NULL)
- {
- ugh = builddiag("%s of %s has an unknown value: %lu"
- , fp->name, sd->name, (unsigned long)n);
- }
- /* FALL THROUGH */
- case ft_loose_enum: /* value from an enumeration with only some names known */
- break;
- case ft_set: /* bits representing set */
- if (!testset(fp->desc, n))
- {
- ugh = builddiag("bitset %s of %s has unknown member(s): %s"
- , fp->name, sd->name, bitnamesof(fp->desc, n));
- }
- break;
- default:
- break;
- }
- i = fp->size;
- switch (i)
- {
- case 8/BITS_PER_BYTE:
- *(u_int8_t *)outp = n;
- break;
- case 16/BITS_PER_BYTE:
- *(u_int16_t *)outp = n;
- break;
- case 32/BITS_PER_BYTE:
- *(u_int32_t *)outp = n;
- break;
- default:
- bad_case(i);
- }
- outp += i;
- break;
- }
-
- case ft_raw: /* bytes to be left in network-order */
- for (; i != 0; i--)
- {
- *outp++ = *cur++;
- }
- break;
-
- case ft_end: /* end of field list */
- passert(cur == ins->cur + sd->size);
- if (obj_pbs != NULL)
- {
- init_pbs(obj_pbs, ins->cur, roof - ins->cur, sd->name);
- obj_pbs->container = ins;
- obj_pbs->desc = sd;
- obj_pbs->cur = cur;
- }
- ins->cur = roof;
- DBG(DBG_PARSING
- , DBG_prefix_print_struct(ins, "parse ", struct_ptr, sd, TRUE));
- return TRUE;
-
- default:
- bad_case(fp->field_type);
- }
- }
- }
-
- /* some failure got us here: report it */
- loglog(RC_LOG_SERIOUS, ugh);
- return FALSE;
-}
-
-bool
-in_raw(void *bytes, size_t len, pb_stream *ins, const char *name)
-{
- if (pbs_left(ins) < len)
- {
- loglog(RC_LOG_SERIOUS, "not enough bytes left to get %s from %s", name, ins->name);
- return FALSE;
- }
- else
- {
- if (bytes == NULL)
- {
- DBG(DBG_PARSING
- , DBG_log("skipping %u raw bytes of %s (%s)"
- , (unsigned) len, ins->name, name);
- DBG_dump(name, ins->cur, len));
- }
- else
- {
- memcpy(bytes, ins->cur, len);
- DBG(DBG_PARSING
- , DBG_log("parsing %u raw bytes of %s into %s"
- , (unsigned) len, ins->name, name);
- DBG_dump(name, bytes, len));
- }
- ins->cur += len;
- return TRUE;
- }
-}
-
-/* "emit" a host struct into a network packet.
- *
- * This code assumes that the network and host structure
- * members have the same alignment and size! This requires
- * that all padding be explicit.
- *
- * If obj_pbs is non-NULL, its pbs describes a new output stream set up
- * to contain the object. The cursor will be left at the variable part.
- * This new stream must subsequently be finalized by close_output_pbs().
- *
- * The value of any field of type ft_len is computed, not taken
- * from the input struct. The length is actually filled in when
- * the object's output stream is finalized. If obj_pbs is NULL,
- * finalization is done by out_struct before it returns.
- *
- * This routine returns TRUE iff it succeeds.
- */
-
-bool
-out_struct(const void *struct_ptr, struct_desc *sd
-, pb_stream *outs, pb_stream *obj_pbs)
-{
- err_t ugh = NULL;
- const u_int8_t *inp = struct_ptr;
- u_int8_t *cur = outs->cur;
-
- DBG(DBG_EMITTING
- , DBG_prefix_print_struct(outs, "emit ", struct_ptr, sd, obj_pbs==NULL));
-
- if (outs->roof - cur < (ptrdiff_t)sd->size)
- {
- ugh = builddiag("not enough room left in output packet to place %s"
- , sd->name);
- }
- else
- {
- bool immediate = FALSE;
- pb_stream obj;
- field_desc *fp;
-
- obj.lenfld = NULL; /* until a length field is discovered */
- obj.lenfld_desc = NULL;
-
- for (fp = sd->fields; ugh == NULL; fp++)
- {
- size_t i = fp->size;
-
- passert(outs->roof - cur >= (ptrdiff_t)i);
- passert(cur - outs->cur <= (ptrdiff_t)(sd->size - i));
- passert(inp - (cur - outs->cur) == struct_ptr);
-
-#if 0
- DBG(DBG_EMITTING, DBG_log("%d %s"
- , (int) (cur - outs->cur), fp->name == NULL? "" : fp->name);
-#endif
- switch (fp->field_type)
- {
- case ft_mbz: /* must be zero */
- inp += i;
- for (; i != 0; i--)
- *cur++ = '\0';
- break;
- case ft_nat: /* natural number (may be 0) */
- case ft_len: /* length of this struct and any following crud */
- case ft_lv: /* length/value field of attribute */
- case ft_enum: /* value from an enumeration */
- case ft_loose_enum: /* value from an enumeration with only some names known */
- case ft_af_enum: /* Attribute Format + value from an enumeration */
- case ft_af_loose_enum: /* Attribute Format + value from an enumeration */
- case ft_set: /* bits representing set */
- {
- u_int32_t n = 0;
-
- switch (i)
- {
- case 8/BITS_PER_BYTE:
- n = *(const u_int8_t *)inp;
- break;
- case 16/BITS_PER_BYTE:
- n = *(const u_int16_t *)inp;
- break;
- case 32/BITS_PER_BYTE:
- n = *(const u_int32_t *)inp;
- break;
- default:
- bad_case(i);
- }
-
- switch (fp->field_type)
- {
- case ft_len: /* length of this struct and any following crud */
- case ft_lv: /* length/value field of attribute */
- if (immediate)
- break; /* not a length */
- /* We can't check the length because it will likely
- * be filled in after variable part is supplied.
- * We do record where this is so that it can be
- * filled in by a subsequent close_output_pbs().
- */
- passert(obj.lenfld == NULL); /* only one ft_len allowed */
- obj.lenfld = cur;
- obj.lenfld_desc = fp;
- break;
- case ft_af_loose_enum: /* Attribute Format + value from an enumeration */
- if ((n & ISAKMP_ATTR_AF_MASK) == ISAKMP_ATTR_AF_TV)
- immediate = TRUE;
- break;
- case ft_af_enum: /* Attribute Format + value from an enumeration */
- if ((n & ISAKMP_ATTR_AF_MASK) == ISAKMP_ATTR_AF_TV)
- immediate = TRUE;
- /* FALL THROUGH */
- case ft_enum: /* value from an enumeration */
- if (enum_name(fp->desc, n) == NULL)
- {
- ugh = builddiag("%s of %s has an unknown value: %lu"
- , fp->name, sd->name, (unsigned long)n);
- }
- /* FALL THROUGH */
- case ft_loose_enum: /* value from an enumeration with only some names known */
- break;
- case ft_set: /* bits representing set */
- if (!testset(fp->desc, n))
- {
- ugh = builddiag("bitset %s of %s has unknown member(s): %s"
- , fp->name, sd->name, bitnamesof(fp->desc, n));
- }
- break;
- default:
- break;
- }
-
- while (i-- != 0)
- {
- cur[i] = (u_int8_t)n;
- n >>= BITS_PER_BYTE;
- }
- inp += fp->size;
- cur += fp->size;
- break;
- }
- case ft_raw: /* bytes to be left in network-order */
- for (; i != 0; i--)
- *cur++ = *inp++;
- break;
- case ft_end: /* end of field list */
- passert(cur == outs->cur + sd->size);
-
- obj.container = outs;
- obj.desc = sd;
- obj.name = sd->name;
- obj.start = outs->cur;
- obj.cur = cur;
- obj.roof = outs->roof; /* limit of possible */
- /* obj.lenfld and obj.lenfld_desc already set */
-
- if (obj_pbs == NULL)
- {
- close_output_pbs(&obj); /* fill in length field, if any */
- }
- else
- {
- /* We set outs->cur to outs->roof so that
- * any attempt to output something into outs
- * before obj is closed will trigger an error.
- */
- outs->cur = outs->roof;
-
- *obj_pbs = obj;
- }
- return TRUE;
-
- default:
- bad_case(fp->field_type);
- }
- }
- }
-
- /* some failure got us here: report it */
- loglog(RC_LOG_SERIOUS, ugh); /* ??? serious, but errno not relevant */
- return FALSE;
-}
-
-bool
-out_generic(u_int8_t np, struct_desc *sd
-, pb_stream *outs, pb_stream *obj_pbs)
-{
- struct isakmp_generic gen;
-
- passert(sd->fields == isakmp_generic_desc.fields);
- gen.isag_np = np;
- return out_struct(&gen, sd, outs, obj_pbs);
-}
-
-bool
-out_generic_raw(u_int8_t np, struct_desc *sd
-, pb_stream *outs, const void *bytes, size_t len, const char *name)
-{
- pb_stream pbs;
-
- if (!out_generic(np, sd, outs, &pbs)
- || !out_raw(bytes, len, &pbs, name))
- return FALSE;
- close_output_pbs(&pbs);
- return TRUE;
-}
-
-bool
-out_raw(const void *bytes, size_t len, pb_stream *outs, const char *name)
-{
- if (pbs_left(outs) < len)
- {
- loglog(RC_LOG_SERIOUS, "not enough room left to place %lu bytes of %s in %s"
- , (unsigned long) len, name, outs->name);
- return FALSE;
- }
- else
- {
- DBG(DBG_EMITTING
- , DBG_log("emitting %u raw bytes of %s into %s"
- , (unsigned) len, name, outs->name);
- DBG_dump(name, bytes, len));
- memcpy(outs->cur, bytes, len);
- outs->cur += len;
- return TRUE;
- }
-}
-
-bool
-out_zero(size_t len, pb_stream *outs, const char *name)
-{
- if (pbs_left(outs) < len)
- {
- loglog(RC_LOG_SERIOUS, "not enough room left to place %s in %s", name, outs->name);
- return FALSE;
- }
- else
- {
- DBG(DBG_EMITTING, DBG_log("emitting %u zero bytes of %s into %s"
- , (unsigned) len, name, outs->name));
- memset(outs->cur, 0x00, len);
- outs->cur += len;
- return TRUE;
- }
-}
-
-/* Record current length.
- * Note: currently, this may be repeated any number of times;
- * the last one wins.
- */
-void
-close_output_pbs(pb_stream *pbs)
-{
- if (pbs->lenfld != NULL)
- {
- u_int32_t len = pbs_offset(pbs);
- int i = pbs->lenfld_desc->size;
-
- if (pbs->lenfld_desc->field_type == ft_lv)
- len -= sizeof(struct isakmp_attribute);
- DBG(DBG_EMITTING, DBG_log("emitting length of %s: %lu"
- , pbs->name, (unsigned long) len));
- while (i-- != 0)
- {
- pbs->lenfld[i] = (u_int8_t)len;
- len >>= BITS_PER_BYTE;
- }
- }
- if (pbs->container != NULL)
- pbs->container->cur = pbs->cur; /* pass space utilization up */
-}