int mps_getbulkreq(struct snmp_message *msg, struct ber_element **root, struct ber_oid *o, int max) { struct ber_element *c, *d, *e; size_t len; int j, ret; j = max; c = *root; for (d = NULL, len = 0; j > 0; j--) { e = ber_add_sequence(NULL); if (c == NULL) c = e; ret = mps_getnextreq(msg, e, o); if (ret == 1) return (1); if (ret == -1) { ber_free_elements(e); if (d == NULL) return (-1); break; } len += ber_calc_len(e); if (len > SNMPD_MAXVARBINDLEN) { ber_free_elements(e); break; } if (d != NULL) ber_link_elements(d, e); d = e; } *root = c; return (0); }
/* * Convert variable bindings from AgentX to SNMP dialect. */ int varbind_convert(struct agentx_pdu *pdu, struct agentx_varbind_hdr *vbhdr, struct ber_element **varbind, struct ber_element **iter) { struct ber_oid oid; u_int32_t d; u_int64_t l; int slen; char *str; struct ber_element *a; int ret = AGENTX_ERR_NONE; if (snmp_agentx_read_oid(pdu, (struct snmp_oid *)&oid) == -1) { ret = AGENTX_ERR_PARSE_ERROR; goto done; } *iter = ber_add_sequence(*iter); if (*varbind == NULL) *varbind = *iter; a = ber_add_oid(*iter, &oid); switch (vbhdr->type) { case AGENTX_NO_SUCH_OBJECT: case AGENTX_NO_SUCH_INSTANCE: case AGENTX_END_OF_MIB_VIEW: case AGENTX_NULL: a = ber_add_null(a); break; case AGENTX_IP_ADDRESS: case AGENTX_OPAQUE: case AGENTX_OCTET_STRING: str = snmp_agentx_read_octetstr(pdu, &slen); if (str == NULL) { ret = AGENTX_ERR_PARSE_ERROR; goto done; } a = ber_add_nstring(a, str, slen); break; case AGENTX_OBJECT_IDENTIFIER: if (snmp_agentx_read_oid(pdu, (struct snmp_oid *)&oid) == -1) { ret = AGENTX_ERR_PARSE_ERROR; goto done; } a = ber_add_oid(a, &oid); break; case AGENTX_INTEGER: case AGENTX_COUNTER32: case AGENTX_GAUGE32: case AGENTX_TIME_TICKS: if (snmp_agentx_read_int(pdu, &d) == -1) { ret = AGENTX_ERR_PARSE_ERROR; goto done; } a = ber_add_integer(a, d); break; case AGENTX_COUNTER64: if (snmp_agentx_read_int64(pdu, &l) == -1) { ret = AGENTX_ERR_PARSE_ERROR; goto done; } a = ber_add_integer(a, l); break; default: log_debug("unknown data type '%i'", vbhdr->type); ret = AGENTX_ERR_PARSE_ERROR; goto done; } /* AgentX types correspond to BER types */ switch (vbhdr->type) { case BER_TYPE_INTEGER: case BER_TYPE_BITSTRING: case BER_TYPE_OCTETSTRING: case BER_TYPE_NULL: case BER_TYPE_OBJECT: /* universal types */ break; /* Convert AgentX error types to SNMP error types */ case AGENTX_NO_SUCH_OBJECT: ber_set_header(a, BER_CLASS_CONTEXT, 0); break; case AGENTX_NO_SUCH_INSTANCE: ber_set_header(a, BER_CLASS_CONTEXT, 1); break; case AGENTX_COUNTER32: ber_set_header(a, BER_CLASS_APPLICATION, SNMP_COUNTER32); break; case AGENTX_GAUGE32: ber_set_header(a, BER_CLASS_APPLICATION, SNMP_GAUGE32); break; case AGENTX_COUNTER64: ber_set_header(a, BER_CLASS_APPLICATION, SNMP_COUNTER64); break; case AGENTX_IP_ADDRESS: /* application 0 implicit 4-byte octet string per SNMPv2-SMI */ break; default: /* application-specific types */ ber_set_header(a, BER_CLASS_APPLICATION, vbhdr->type); break; } done: return (ret); }