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/*
* 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 <stdint.h>
#define AGENTX_PDU_FLAG_INSTANCE_REGISTRATION (1 << 0)
#define AGENTX_PDU_FLAG_NEW_INDEX (1 << 1)
#define AGENTX_PDU_FLAG_ANY_INDEX (1 << 2)
#define AGENTX_PDU_FLAG_NON_DEFAULT_CONTEXT (1 << 3)
#define AGENTX_PDU_FLAG_NETWORK_BYTE_ORDER (1 << 4)
#define AGENTX_PRIORITY_DEFAULT 127
enum agentx_byte_order {
AGENTX_BYTE_ORDER_BE,
AGENTX_BYTE_ORDER_LE
};
#if BYTE_ORDER == BIG_ENDIAN
#define AGENTX_BYTE_ORDER_NATIVE AGENTX_BYTE_ORDER_BE
#else
#define AGENTX_BYTE_ORDER_NATIVE AGENTX_BYTE_ORDER_LE
#endif
enum agentx_pdu_type {
AGENTX_PDU_TYPE_OPEN = 1,
AGENTX_PDU_TYPE_CLOSE = 2,
AGENTX_PDU_TYPE_REGISTER = 3,
AGENTX_PDU_TYPE_UNREGISTER = 4,
AGENTX_PDU_TYPE_GET = 5,
AGENTX_PDU_TYPE_GETNEXT = 6,
AGENTX_PDU_TYPE_GETBULK = 7,
AGENTX_PDU_TYPE_TESTSET = 8,
AGENTX_PDU_TYPE_COMMITSET = 9,
AGENTX_PDU_TYPE_UNDOSET = 10,
AGENTX_PDU_TYPE_CLEANUPSET = 11,
AGENTX_PDU_TYPE_NOTIFY = 12,
AGENTX_PDU_TYPE_PING = 13,
AGENTX_PDU_TYPE_INDEXALLOCATE = 14,
AGENTX_PDU_TYPE_INDEXDEALLOCATE = 15,
AGENTX_PDU_TYPE_ADDAGENTCAPS = 16,
AGENTX_PDU_TYPE_REMOVEAGENTCAPS = 17,
AGENTX_PDU_TYPE_RESPONSE = 18
};
enum agentx_pdu_error {
AGENTX_PDU_ERROR_NOERROR = 0,
AGENTX_PDU_ERROR_GENERR = 5,
AGENTX_PDU_ERROR_NOACCESS = 6,
AGENTX_PDU_ERROR_WRONGTYPE = 7,
AGENTX_PDU_ERROR_WRONGLENGTH = 8,
AGENTX_PDU_ERROR_WRONGENCODING = 9,
AGENTX_PDU_ERROR_WRONGVALUE = 10,
AGENTX_PDU_ERROR_NOCREATION = 11,
AGENTX_PDU_ERROR_INCONSISTENTVALUE = 12,
AGENTX_PDU_ERROR_RESOURCEUNAVAILABLE = 13,
AGENTX_PDU_ERROR_COMMITFAILED = 14,
AGENTX_PDU_ERROR_UNDOFAILED = 15,
AGENTX_PDU_ERROR_NOTWRITABLE = 17,
AGENTX_PDU_ERROR_INCONSISTENTNAME = 18,
AGENTX_PDU_ERROR_OPENFAILED = 256,
AGENTX_PDU_ERROR_NOTOPEN = 257,
AGENTX_PDU_ERROR_INDEXWRONGTYPE = 258,
AGENTX_PDU_ERROR_INDEXALREADYALLOCATED = 259,
AGENTX_PDU_ERROR_INDEXNONEAVAILABLE = 260,
AGENTX_PDU_ERROR_INDEXNOTALLOCATED = 261,
AGENTX_PDU_ERROR_UNSUPPORTEDCONETXT = 262,
AGENTX_PDU_ERROR_DUPLICATEREGISTRATION = 263,
AGENTX_PDU_ERROR_UNKNOWNREGISTRATION = 264,
AGENTX_PDU_ERROR_UNKNOWNAGENTCAPS = 265,
AGENTX_PDU_ERROR_PARSEERROR = 266,
AGENTX_PDU_ERROR_REQUESTDENIED = 267,
AGENTX_PDU_ERROR_PROCESSINGERROR = 268
};
enum agentx_data_type {
AGENTX_DATA_TYPE_INTEGER = 2,
AGENTX_DATA_TYPE_OCTETSTRING = 4,
AGENTX_DATA_TYPE_NULL = 5,
AGENTX_DATA_TYPE_OID = 6,
AGENTX_DATA_TYPE_IPADDRESS = 64,
AGENTX_DATA_TYPE_COUNTER32 = 65,
AGENTX_DATA_TYPE_GAUGE32 = 66,
AGENTX_DATA_TYPE_TIMETICKS = 67,
AGENTX_DATA_TYPE_OPAQUE = 68,
AGENTX_DATA_TYPE_COUNTER64 = 70,
AGENTX_DATA_TYPE_NOSUCHOBJECT = 128,
AGENTX_DATA_TYPE_NOSUCHINSTANCE = 129,
AGENTX_DATA_TYPE_ENDOFMIBVIEW = 130
};
enum agentx_close_reason {
AGENTX_CLOSE_OTHER = 1,
AGENTX_CLOSEN_PARSEERROR = 2,
AGENTX_CLOSE_PROTOCOLERROR = 3,
AGENTX_CLOSE_TIMEOUTS = 4,
AGENTX_CLOSE_SHUTDOWN = 5,
AGENTX_CLOSE_BYMANAGER = 6
};
struct agentx {
int ax_fd;
enum agentx_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;
uint32_t *ax_packetids;
size_t ax_packetidsize;
};
#ifndef AGENTX_PRIMITIVE
#define AGENTX_PRIMITIVE
#define AGENTX_OID_MAX_LEN 128
struct agentx_oid {
uint8_t aoi_include;
uint32_t aoi_id[AGENTX_OID_MAX_LEN];
size_t aoi_idlen;
};
struct agentx_ostring {
unsigned char *aos_string;
uint32_t aos_slen;
};
#endif
struct agentx_searchrange {
struct agentx_oid asr_start;
struct agentx_oid asr_stop;
};
struct agentx_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 agentx_varbind {
enum agentx_data_type avb_type;
struct agentx_oid avb_oid;
union agentx_data {
uint32_t avb_uint32;
uint64_t avb_uint64;
struct agentx_ostring avb_ostring;
struct agentx_oid avb_oid;
} avb_data;
};
struct agentx_pdu {
struct agentx_pdu_header ap_header;
struct agentx_ostring ap_context;
union {
struct agentx_pdu_searchrangelist {
size_t ap_nsr;
struct agentx_searchrange *ap_sr;
} ap_srl;
struct agentx_pdu_getbulk {
uint16_t ap_nonrep;
uint16_t ap_maxrep;
struct agentx_pdu_searchrangelist ap_srl;
} ap_getbulk;
struct agentx_pdu_varbindlist {
struct agentx_varbind *ap_varbind;
size_t ap_nvarbind;
} ap_vbl;
struct agentx_pdu_response {
uint32_t ap_uptime;
enum agentx_pdu_error ap_error;
uint16_t ap_index;
struct agentx_varbind *ap_varbindlist;
size_t ap_nvarbind;
} ap_response;
void *ap_raw;
} ap_payload;
};
struct agentx *agentx_new(int);
void agentx_free(struct agentx *);
struct agentx_pdu *agentx_recv(struct agentx *);
ssize_t agentx_send(struct agentx *);
uint32_t agentx_open(struct agentx *, uint8_t, struct agentx_oid *,
struct agentx_ostring *);
uint32_t agentx_close(struct agentx *, uint32_t, enum agentx_close_reason);
uint32_t agentx_indexallocate(struct agentx *, uint8_t, uint32_t,
struct agentx_ostring *, struct agentx_varbind *, size_t);
uint32_t agentx_indexdeallocate(struct agentx *, uint32_t,
struct agentx_ostring *, struct agentx_varbind *, size_t);
uint32_t agentx_addagentcaps(struct agentx *, uint32_t, struct agentx_ostring *,
struct agentx_oid *, struct agentx_ostring *);
uint32_t agentx_removeagentcaps(struct agentx *, uint32_t,
struct agentx_ostring *, struct agentx_oid *);
uint32_t agentx_register(struct agentx *, uint8_t, uint32_t,
struct agentx_ostring *, uint8_t, uint8_t, uint8_t, struct agentx_oid *,
uint32_t);
uint32_t agentx_unregister(struct agentx *, uint32_t, struct agentx_ostring *,
uint8_t, uint8_t, struct agentx_oid *, uint32_t);
int agentx_response(struct agentx *, uint32_t, uint32_t, uint32_t,
struct agentx_ostring *, uint32_t, uint16_t, uint16_t,
struct agentx_varbind *, size_t);
void agentx_pdu_free(struct agentx_pdu *);
void agentx_varbind_free(struct agentx_varbind *);
const char *agentx_error2string(enum agentx_pdu_error);
const char *agentx_pdutype2string(enum agentx_pdu_type);
const char *agentx_oid2string(struct agentx_oid *);
const char *agentx_oidrange2string(struct agentx_oid *, uint8_t, uint32_t);
const char *agentx_varbind2string(struct agentx_varbind *);
const char *agentx_closereason2string(enum agentx_close_reason);
int agentx_oid_cmp(struct agentx_oid *, struct agentx_oid *);
int agentx_oid_add(struct agentx_oid *, uint32_t);
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