/* packet-per.h * Routines for dissection of ASN.1 Aligned PER * 2003 Ronnie Sahlberg * * $Id$ * * Wireshark - Network traffic analyzer * By Gerald Combs * 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. */ #ifndef __PACKET_PER_H__ #define __PACKET_PER_H__ /*--- ASN.1 Context, will be moved to common ASN.1 header when created --- */ typedef enum { ASN_ENC_BER, /* X.690 - BER, CER, DER */ ASN_ENC_PER, /* X.691 - PER */ ASN_ENC_ECN, /* X.692 - ECN */ ASN_ENC_XER, /* X.693 - XER */ } asn_enc_e; typedef struct _asn_ctx_t { asn_enc_e encoding; gboolean aligned; packet_info *pinfo; proto_item *created_item; void *private_data; } asn_ctx_t; void asn_ctx_init(asn_ctx_t *actx, asn_enc_e encoding, gboolean aligned, packet_info *pinfo); #define PER_NOT_DECODED_YET(x) \ proto_tree_add_text(tree, tvb, 0, 0, "something unknown here [%s]",x); \ fprintf(stderr,"[%s %u] Not decoded yet in packet : %d [%s]\n", __FILE__, __LINE__, actx->pinfo->fd->num,x); \ if (check_col(actx->pinfo->cinfo, COL_INFO)){ \ col_append_fstr(actx->pinfo->cinfo, COL_INFO, "[UNKNOWN PER: %s]", x); \ } \ tvb_get_guint8(tvb, 9999); typedef int (*per_callback)(tvbuff_t *, int, asn_ctx_t *, proto_tree *); /* in all functions here, offset is guint32 and is byteposition<<3 + bitposition */ /* value for value and size constraints */ #define NO_BOUND -1 /* values for extensions */ #define ASN1_NO_EXTENSIONS 0 #define ASN1_EXTENSION_ROOT 1 #define ASN1_NOT_EXTENSION_ROOT 2 /* value for optional */ #define ASN1_NOT_OPTIONAL 0 #define ASN1_OPTIONAL 1 typedef struct _per_choice_t { int value; const char *name; int extension; per_callback func; } per_choice_t; typedef struct _per_sequence_t { const char *name; int extension; int optional; per_callback func; } per_sequence_t; extern guint32 dissect_per_length_determinant(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *tree, int hf_index, guint32 *length); extern guint32 dissect_per_null(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *tree, int hf_index); extern guint32 dissect_per_GeneralString(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *tree, int hf_index); extern guint32 dissect_per_sequence_of(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *parent_tree, int hf_index, gint ett_index, const per_sequence_t *seq); extern guint32 dissect_per_IA5String(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *tree, int hf_index, int min_len, int max_len); extern guint32 dissect_per_NumericString(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *tree, int hf_index, int min_len, int max_len); extern guint32 dissect_per_PrintableString(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *tree, int hf_index, int min_len, int max_len); extern guint32 dissect_per_VisibleString(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *tree, int hf_index, int min_len, int max_len); extern guint32 dissect_per_BMPString(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *tree, int hf_index, int min_len, int max_len); extern guint32 dissect_per_constrained_sequence_of(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *parent_tree, int hf_index, gint ett_index, const per_sequence_t *seq, int min_len, int max_len); extern guint32 dissect_per_constrained_set_of(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *parent_tree, int hf_index, gint ett_index, const per_sequence_t *seq, int min_len, int max_len); extern guint32 dissect_per_set_of(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *parent_tree, int hf_index, gint ett_index, const per_sequence_t *seq); extern guint32 dissect_per_object_identifier(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *tree, int hf_index, tvbuff_t **value_tvb); extern guint32 dissect_per_object_identifier_str(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *tree, int hf_index, const char **value_string); extern guint32 dissect_per_boolean(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *tree, int hf_index, gboolean *bool); extern guint32 dissect_per_integer(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *tree, int hf_index, gint32 *value); extern guint32 dissect_per_constrained_integer(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *tree, int hf_index, guint32 min, guint32 max, guint32 *value, gboolean has_extension); extern guint32 dissect_per_choice(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *tree, int hf_index, gint ett_index, const per_choice_t *choice, guint32 *value); extern guint32 dissect_per_sequence(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *parent_tree, int hf_index, gint ett_index, const per_sequence_t *sequence); extern guint32 dissect_per_octet_string(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *tree, int hf_index, int min_len, int max_len, tvbuff_t **value_tvb); extern guint32 dissect_per_bit_string(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *tree, int hf_index, int min_len, int max_len, gboolean has_extension); extern guint32 dissect_per_restricted_character_string(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *tree, int hf_index, int min_len, int max_len, const char *alphabet, int alphabet_length, tvbuff_t **value_tvb); extern guint32 dissect_per_enumerated(tvbuff_t *tvb, guint32 offset, asn_ctx_t *actx, proto_tree *tree, int hf_index, guint32 root_num, guint32 *value, gboolean has_extension, guint32 ext_num, guint32 *value_map); #endif /* __PACKET_PER_H__ */