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-rw-r--r--Source/charon/encoding/payloads/id_payload.c300
1 files changed, 300 insertions, 0 deletions
diff --git a/Source/charon/encoding/payloads/id_payload.c b/Source/charon/encoding/payloads/id_payload.c
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+++ b/Source/charon/encoding/payloads/id_payload.c
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+/**
+ * @file id_payload.h
+ *
+ * @brief Interface of id_payload_t.
+ *
+ */
+
+/*
+ * Copyright (C) 2005 Jan Hutter, Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * 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 "id_payload.h"
+
+#include <encoding/payloads/encodings.h>
+#include <utils/allocator.h>
+
+/**
+ * String mappings for id_type_t.
+ */
+mapping_t id_type_m[] = {
+{ID_IPV4_ADDR, "ID_IPV4_ADDR"},
+{ID_FQDN, "ID_FQDN"},
+{ID_RFC822_ADDR, "ID_RFC822_ADDR"},
+{ID_IPV6_ADDR, "ID_IPV6_ADDR"},
+{ID_DER_ASN1_DN, "ID_DER_ASN1_DN"},
+{ID_DER_ASN1_GN, "ID_DER_ASN1_GN"},
+{ID_KEY_ID, "ID_KEY_ID"},
+{MAPPING_END, NULL}
+};
+
+
+typedef struct private_id_payload_t private_id_payload_t;
+
+/**
+ * Private data of an id_payload_t object.
+ *
+ */
+struct private_id_payload_t {
+ /**
+ * Public id_payload_t interface.
+ */
+ id_payload_t public;
+
+ /**
+ * TRUE if this ID payload is of type IDi, FALSE for IDr
+ */
+ bool is_initiator;
+
+ /**
+ * Next payload type.
+ */
+ u_int8_t next_payload;
+
+ /**
+ * Critical flag.
+ */
+ bool critical;
+
+ /**
+ * Length of this payload.
+ */
+ u_int16_t payload_length;
+
+ /**
+ * Type of the ID Data.
+ */
+ u_int8_t id_type;
+
+ /**
+ * The contained id data value.
+ */
+ chunk_t id_data;
+
+ /**
+ * @brief Computes the length of this payload.
+ *
+ * @param this calling private_id_payload_t object
+ */
+ void (*compute_length) (private_id_payload_t *this);
+};
+
+/**
+ * Encoding rules to parse or generate a ID payload
+ *
+ * The defined offsets are the positions in a object of type
+ * private_id_payload_t.
+ *
+ */
+encoding_rule_t id_payload_encodings[] = {
+ /* 1 Byte next payload type, stored in the field next_payload */
+ { U_INT_8, offsetof(private_id_payload_t, next_payload) },
+ /* the critical bit */
+ { FLAG, offsetof(private_id_payload_t, critical) },
+ /* 7 Bit reserved bits, nowhere stored */
+ { RESERVED_BIT, 0 },
+ { RESERVED_BIT, 0 },
+ { RESERVED_BIT, 0 },
+ { RESERVED_BIT, 0 },
+ { RESERVED_BIT, 0 },
+ { RESERVED_BIT, 0 },
+ { RESERVED_BIT, 0 },
+ /* Length of the whole payload*/
+ { PAYLOAD_LENGTH, offsetof(private_id_payload_t, payload_length) },
+ /* 1 Byte ID type*/
+ { U_INT_8, offsetof(private_id_payload_t, id_type) },
+ /* 3 reserved bytes */
+ { RESERVED_BYTE, 0 },
+ { RESERVED_BYTE, 0 },
+ { RESERVED_BYTE, 0 },
+ /* some id data bytes, length is defined in PAYLOAD_LENGTH */
+ { ID_DATA, offsetof(private_id_payload_t, id_data) }
+};
+
+/*
+ 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 !C! RESERVED ! Payload Length !
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ ! ID Type ! RESERVED |
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ ! !
+ ~ Identification Data ~
+ ! !
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+*/
+
+/**
+ * Implementation of payload_t.verify.
+ */
+static status_t verify(private_id_payload_t *this)
+{
+ if (this->critical)
+ {
+ /* critical bit is set! */
+ return FAILED;
+ }
+ return SUCCESS;
+}
+
+/**
+ * Implementation of id_payload_t.get_encoding_rules.
+ */
+static void get_encoding_rules(private_id_payload_t *this, encoding_rule_t **rules, size_t *rule_count)
+{
+ *rules = id_payload_encodings;
+ *rule_count = sizeof(id_payload_encodings) / sizeof(encoding_rule_t);
+}
+
+/**
+ * Implementation of payload_t.get_type.
+ */
+static payload_type_t get_payload_type(private_id_payload_t *this)
+{
+ return ((this->is_initiator) ? ID_INITIATOR : ID_RESPONDER);
+}
+
+/**
+ * Implementation of payload_t.get_next_type.
+ */
+static payload_type_t get_next_type(private_id_payload_t *this)
+{
+ return (this->next_payload);
+}
+
+/**
+ * Implementation of payload_t.set_next_type.
+ */
+static void set_next_type(private_id_payload_t *this,payload_type_t type)
+{
+ this->next_payload = type;
+}
+
+/**
+ * Implementation of payload_t.get_length.
+ */
+static size_t get_length(private_id_payload_t *this)
+{
+ this->compute_length(this);
+ return this->payload_length;
+}
+
+/**
+ * Implementation of id_payload_t.set_type.
+ */
+static void set_id_type (private_id_payload_t *this, id_type_t type)
+{
+ this->id_type = type;
+}
+
+/**
+ * Implementation of id_payload_t.get_id_type.
+ */
+static id_type_t get_id_type (private_id_payload_t *this)
+{
+ return (this->id_type);
+}
+
+/**
+ * Implementation of id_payload_t.set_data.
+ */
+static void set_data (private_id_payload_t *this, chunk_t data)
+{
+ if (this->id_data.ptr != NULL)
+ {
+ allocator_free_chunk(&(this->id_data));
+ }
+ this->id_data.ptr = allocator_clone_bytes(data.ptr,data.len);
+ this->id_data.len = data.len;
+}
+
+/**
+ * Implementation of id_payload_t.get_data.
+ */
+static chunk_t get_data (private_id_payload_t *this)
+{
+ chunk_t cloned_data;
+ if (this->id_data.ptr == NULL)
+ {
+ return (this->id_data);
+ }
+ cloned_data.ptr = allocator_clone_bytes(this->id_data.ptr,this->id_data.len);
+ cloned_data.len = this->id_data.len;
+ return cloned_data;
+}
+
+/**
+ * Implementation of id_payload_t.get_initiator.
+ */
+static bool get_initiator (private_id_payload_t *this)
+{
+ return (this->is_initiator);
+}
+
+/**
+ * Implementation of id_payload_t.set_initiator.
+ */
+static void set_initiator (private_id_payload_t *this,bool is_initiator)
+{
+ this->is_initiator = is_initiator;
+}
+
+/**
+ * Implementation of payload_t.destroy and id_payload_t.destroy.
+ */
+static void destroy(private_id_payload_t *this)
+{
+ if (this->id_data.ptr != NULL)
+ {
+ allocator_free_chunk(&(this->id_data));
+ }
+
+ allocator_free(this);
+}
+
+/*
+ * Described in header
+ */
+id_payload_t *id_payload_create(bool is_initiator)
+{
+ private_id_payload_t *this = allocator_alloc_thing(private_id_payload_t);
+
+ /* interface functions */
+ this->public.payload_interface.verify = (status_t (*) (payload_t *))verify;
+ this->public.payload_interface.get_encoding_rules = (void (*) (payload_t *, encoding_rule_t **, size_t *) ) get_encoding_rules;
+ this->public.payload_interface.get_length = (size_t (*) (payload_t *)) get_length;
+ this->public.payload_interface.get_next_type = (payload_type_t (*) (payload_t *)) get_next_type;
+ this->public.payload_interface.set_next_type = (void (*) (payload_t *,payload_type_t)) set_next_type;
+ this->public.payload_interface.get_type = (payload_type_t (*) (payload_t *)) get_payload_type;
+ this->public.payload_interface.destroy = (void (*) (payload_t *))destroy;
+
+ /* public functions */
+ this->public.destroy = (void (*) (id_payload_t *)) destroy;
+ this->public.set_id_type = (void (*) (id_payload_t *,id_type_t)) set_id_type;
+ this->public.get_id_type = (id_type_t (*) (id_payload_t *)) get_id_type;
+ this->public.set_data = (void (*) (id_payload_t *,chunk_t)) set_data;
+ this->public.get_data = (chunk_t (*) (id_payload_t *)) get_data;
+ this->public.get_initiator = (bool (*) (id_payload_t *)) get_initiator;
+ this->public.set_initiator = (void (*) (id_payload_t *,bool)) set_initiator;
+
+ /* private variables */
+ this->critical = FALSE;
+ this->next_payload = NO_PAYLOAD;
+ this->payload_length =ID_PAYLOAD_HEADER_LENGTH;
+ this->id_data = CHUNK_INITIALIZER;
+ this->is_initiator = is_initiator;
+
+ return (&(this->public));
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-07-18 15:02:22 +0000