/* $OpenBSD: ax.h,v 1.4 2021/01/02 01:06:31 rob Exp $ */ /* * Copyright (c) 2019 Martijn van Duren * * 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 #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; uint32_t *ax_packetids; size_t ax_packetidsize; }; #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_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_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; void *ap_raw; } 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); 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, struct ax_ostring *, 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);