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/* $OpenBSD: ax.h,v 1.4 2024/02/20 12:25:43 martijn Exp $ */
/*
* Copyright (c) 2019 Martijn van Duren <martijn@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <endian.h>
#include <stdint.h>
#define AX_PDU_FLAG_INSTANCE_REGISTRATION (1 << 0)
#define AX_PDU_FLAG_NEW_INDEX (1 << 1)
#define AX_PDU_FLAG_ANY_INDEX (1 << 2)
#define AX_PDU_FLAG_NON_DEFAULT_CONTEXT (1 << 3)
#define AX_PDU_FLAG_NETWORK_BYTE_ORDER (1 << 4)
#define AX_PRIORITY_DEFAULT 127
enum ax_byte_order {
AX_BYTE_ORDER_BE,
AX_BYTE_ORDER_LE
};
#if BYTE_ORDER == BIG_ENDIAN
#define AX_BYTE_ORDER_NATIVE AX_BYTE_ORDER_BE
#else
#define AX_BYTE_ORDER_NATIVE AX_BYTE_ORDER_LE
#endif
enum ax_pdu_type {
AX_PDU_TYPE_OPEN = 1,
AX_PDU_TYPE_CLOSE = 2,
AX_PDU_TYPE_REGISTER = 3,
AX_PDU_TYPE_UNREGISTER = 4,
AX_PDU_TYPE_GET = 5,
AX_PDU_TYPE_GETNEXT = 6,
AX_PDU_TYPE_GETBULK = 7,
AX_PDU_TYPE_TESTSET = 8,
AX_PDU_TYPE_COMMITSET = 9,
AX_PDU_TYPE_UNDOSET = 10,
AX_PDU_TYPE_CLEANUPSET = 11,
AX_PDU_TYPE_NOTIFY = 12,
AX_PDU_TYPE_PING = 13,
AX_PDU_TYPE_INDEXALLOCATE = 14,
AX_PDU_TYPE_INDEXDEALLOCATE = 15,
AX_PDU_TYPE_ADDAGENTCAPS = 16,
AX_PDU_TYPE_REMOVEAGENTCAPS = 17,
AX_PDU_TYPE_RESPONSE = 18
};
enum ax_pdu_error {
AX_PDU_ERROR_NOERROR = 0,
AX_PDU_ERROR_GENERR = 5,
AX_PDU_ERROR_NOACCESS = 6,
AX_PDU_ERROR_WRONGTYPE = 7,
AX_PDU_ERROR_WRONGLENGTH = 8,
AX_PDU_ERROR_WRONGENCODING = 9,
AX_PDU_ERROR_WRONGVALUE = 10,
AX_PDU_ERROR_NOCREATION = 11,
AX_PDU_ERROR_INCONSISTENTVALUE = 12,
AX_PDU_ERROR_RESOURCEUNAVAILABLE = 13,
AX_PDU_ERROR_COMMITFAILED = 14,
AX_PDU_ERROR_UNDOFAILED = 15,
AX_PDU_ERROR_NOTWRITABLE = 17,
AX_PDU_ERROR_INCONSISTENTNAME = 18,
AX_PDU_ERROR_OPENFAILED = 256,
AX_PDU_ERROR_NOTOPEN = 257,
AX_PDU_ERROR_INDEXWRONGTYPE = 258,
AX_PDU_ERROR_INDEXALREADYALLOCATED = 259,
AX_PDU_ERROR_INDEXNONEAVAILABLE = 260,
AX_PDU_ERROR_INDEXNOTALLOCATED = 261,
AX_PDU_ERROR_UNSUPPORTEDCONETXT = 262,
AX_PDU_ERROR_DUPLICATEREGISTRATION = 263,
AX_PDU_ERROR_UNKNOWNREGISTRATION = 264,
AX_PDU_ERROR_UNKNOWNAGENTCAPS = 265,
AX_PDU_ERROR_PARSEERROR = 266,
AX_PDU_ERROR_REQUESTDENIED = 267,
AX_PDU_ERROR_PROCESSINGERROR = 268
};
enum ax_data_type {
AX_DATA_TYPE_INTEGER = 2,
AX_DATA_TYPE_OCTETSTRING = 4,
AX_DATA_TYPE_NULL = 5,
AX_DATA_TYPE_OID = 6,
AX_DATA_TYPE_IPADDRESS = 64,
AX_DATA_TYPE_COUNTER32 = 65,
AX_DATA_TYPE_GAUGE32 = 66,
AX_DATA_TYPE_TIMETICKS = 67,
AX_DATA_TYPE_OPAQUE = 68,
AX_DATA_TYPE_COUNTER64 = 70,
AX_DATA_TYPE_NOSUCHOBJECT = 128,
AX_DATA_TYPE_NOSUCHINSTANCE = 129,
AX_DATA_TYPE_ENDOFMIBVIEW = 130
};
enum ax_close_reason {
AX_CLOSE_OTHER = 1,
AX_CLOSEN_PARSEERROR = 2,
AX_CLOSE_PROTOCOLERROR = 3,
AX_CLOSE_TIMEOUTS = 4,
AX_CLOSE_SHUTDOWN = 5,
AX_CLOSE_BYMANAGER = 6
};
struct ax {
int ax_fd;
enum ax_byte_order ax_byteorder;
uint8_t *ax_rbuf;
size_t ax_rblen;
size_t ax_rbsize;
uint8_t *ax_wbuf;
size_t ax_wblen;
size_t ax_wbtlen;
size_t ax_wbsize;
};
#ifndef AX_PRIMITIVE
#define AX_PRIMITIVE
#define AX_OID_MAX_LEN 128
struct ax_oid {
uint8_t aoi_include;
uint32_t aoi_id[AX_OID_MAX_LEN];
size_t aoi_idlen;
};
struct ax_ostring {
unsigned char *aos_string;
uint32_t aos_slen;
};
#endif
struct ax_searchrange {
struct ax_oid asr_start;
struct ax_oid asr_stop;
};
struct ax_pdu_header {
uint8_t aph_version;
uint8_t aph_type;
uint8_t aph_flags;
uint8_t aph_reserved;
uint32_t aph_sessionid;
uint32_t aph_transactionid;
uint32_t aph_packetid;
uint32_t aph_plength;
};
struct ax_varbind {
enum ax_data_type avb_type;
struct ax_oid avb_oid;
union ax_data {
int32_t avb_int32;
uint32_t avb_uint32;
uint64_t avb_uint64;
struct ax_ostring avb_ostring;
struct ax_oid avb_oid;
} avb_data;
};
struct ax_pdu {
struct ax_pdu_header ap_header;
struct ax_ostring ap_context;
union {
struct ax_pdu_open {
uint8_t ap_timeout;
struct ax_oid ap_oid;
struct ax_ostring ap_descr;
} ap_open;
struct ax_pdu_close {
enum ax_close_reason ap_reason;
} ap_close;
struct ax_pdu_register {
uint8_t ap_timeout;
uint8_t ap_priority;
uint8_t ap_range_subid;
struct ax_oid ap_subtree;
uint32_t ap_upper_bound;
} ap_register;
struct ax_pdu_unregister {
uint8_t ap_priority;
uint8_t ap_range_subid;
struct ax_oid ap_subtree;
uint32_t ap_upper_bound;
} ap_unregister;
struct ax_pdu_searchrangelist {
size_t ap_nsr;
struct ax_searchrange *ap_sr;
} ap_srl;
struct ax_pdu_getbulk {
uint16_t ap_nonrep;
uint16_t ap_maxrep;
struct ax_pdu_searchrangelist ap_srl;
} ap_getbulk;
struct ax_pdu_varbindlist {
struct ax_varbind *ap_varbind;
size_t ap_nvarbind;
} ap_vbl;
struct ax_pdu_addagentcaps {
struct ax_oid ap_oid;
struct ax_ostring ap_descr;
} ap_addagentcaps;
struct ax_pdu_removeagentcaps {
struct ax_oid ap_oid;
} ap_removeagentcaps;
struct ax_pdu_response {
uint32_t ap_uptime;
enum ax_pdu_error ap_error;
uint16_t ap_index;
struct ax_varbind *ap_varbindlist;
size_t ap_nvarbind;
} ap_response;
} ap_payload;
};
struct ax *ax_new(int);
void ax_free(struct ax *);
struct ax_pdu *ax_recv(struct ax *);
ssize_t ax_send(struct ax *);
uint32_t ax_open(struct ax *, uint8_t, struct ax_oid *,
struct ax_ostring *);
uint32_t ax_close(struct ax *, uint32_t, enum ax_close_reason);
int ax_get(struct ax *, uint32_t, uint32_t, uint32_t, struct ax_ostring *,
struct ax_searchrange *, size_t);
int ax_getnext(struct ax *, uint32_t, uint32_t, uint32_t, struct ax_ostring *,
struct ax_searchrange *, size_t);
uint32_t ax_indexallocate(struct ax *, uint8_t, uint32_t,
struct ax_ostring *, struct ax_varbind *, size_t);
uint32_t ax_indexdeallocate(struct ax *, uint32_t,
struct ax_ostring *, struct ax_varbind *, size_t);
uint32_t ax_addagentcaps(struct ax *, uint32_t, struct ax_ostring *,
struct ax_oid *, struct ax_ostring *);
uint32_t ax_removeagentcaps(struct ax *, uint32_t,
struct ax_ostring *, struct ax_oid *);
uint32_t ax_register(struct ax *, uint8_t, uint32_t,
struct ax_ostring *, uint8_t, uint8_t, uint8_t, struct ax_oid *,
uint32_t);
uint32_t ax_unregister(struct ax *, uint32_t, struct ax_ostring *,
uint8_t, uint8_t, struct ax_oid *, uint32_t);
int ax_response(struct ax *, uint32_t, uint32_t, uint32_t,
uint32_t, uint16_t, uint16_t, struct ax_varbind *, size_t);
void ax_pdu_free(struct ax_pdu *);
void ax_varbind_free(struct ax_varbind *);
const char *ax_error2string(enum ax_pdu_error);
const char *ax_pdutype2string(enum ax_pdu_type);
const char *ax_oid2string(struct ax_oid *);
const char *ax_oidrange2string(struct ax_oid *, uint8_t, uint32_t);
const char *ax_varbind2string(struct ax_varbind *);
const char *ax_closereason2string(enum ax_close_reason);
int ax_oid_cmp(struct ax_oid *, struct ax_oid *);
int ax_oid_add(struct ax_oid *, uint32_t);
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