core/snmp/msg_in.c

65 static err_t snmp_pdu_header_check(struct pbuf *p, u16_t ofs, u16_t pdu_len,
68 static err_t snmp_pdu_dec_varbindlist(struct pbuf *p, u16_t ofs,
830  * @param ofs points to first octet of SNMP message
839 snmp_pdu_header_check(struct pbuf *p, u16_t ofs, u16_t pdu_len, u16_t * ofs_ret,
848     ofs_base = ofs;
849     snmp_asn1_dec_type(p, ofs, &type);
850     derr = snmp_asn1_dec_length(p, ofs + 1, &len_octets, &len);
857     ofs += (1 + len_octets);
858     snmp_asn1_dec_type(p, ofs, &type);
859     derr = snmp_asn1_dec_length(p, ofs + 1, &len_octets, &len);
866     derr = snmp_asn1_dec_s32t(p, ofs + 1 + len_octets, len, &version);
877     ofs += (1 + len_octets + len);
878     snmp_asn1_dec_type(p, ofs, &type);
879     derr = snmp_asn1_dec_length(p, ofs + 1, &len_octets, &len);
887       snmp_asn1_dec_raw(p, ofs + 1 + len_octets, len, SNMP_COMMUNITY_STR_LEN,
905     ofs += (1 + len_octets + len);
906     snmp_asn1_dec_type(p, ofs, &type);
907     derr = snmp_asn1_dec_length(p, ofs + 1, &len_octets, &len);
949     ofs += (1 + len_octets);
950     if (len != (pdu_len - (ofs - ofs_base))) {
955     snmp_asn1_dec_type(p, ofs, &type);
956     derr = snmp_asn1_dec_length(p, ofs + 1, &len_octets, &len);
963     derr = snmp_asn1_dec_s32t(p, ofs + 1 + len_octets, len, &m_stat->rid);
969     ofs += (1 + len_octets + len);
970     snmp_asn1_dec_type(p, ofs, &type);
971     derr = snmp_asn1_dec_length(p, ofs + 1, &len_octets, &len);
981       snmp_asn1_dec_s32t(p, ofs + 1 + len_octets, len, &m_stat->error_status);
1004     ofs += (1 + len_octets + len);
1005     snmp_asn1_dec_type(p, ofs, &type);
1006     derr = snmp_asn1_dec_length(p, ofs + 1, &len_octets, &len);
1016       snmp_asn1_dec_s32t(p, ofs + 1 + len_octets, len, &m_stat->error_index);
1022     ofs += (1 + len_octets + len);
1023     *ofs_ret = ofs;
1028 snmp_pdu_dec_varbindlist(struct pbuf *p, u16_t ofs, u16_t * ofs_ret,
1037     snmp_asn1_dec_type(p, ofs, &type);
1038     derr = snmp_asn1_dec_length(p, ofs + 1, &len_octets, &vb_len);
1044     ofs += (1 + len_octets);
1055         snmp_asn1_dec_type(p, ofs, &type);
1056         derr = snmp_asn1_dec_length(p, ofs + 1, &len_octets, &len);
1065         ofs += (1 + len_octets);
1068         snmp_asn1_dec_type(p, ofs, &type);
1069         derr = snmp_asn1_dec_length(p, ofs + 1, &len_octets, &len);
1079         derr = snmp_asn1_dec_oid(p, ofs + 1 + len_octets, len, &oid);
1087         ofs += (1 + len_octets + len);
1090         snmp_asn1_dec_type(p, ofs, &type);
1091         derr = snmp_asn1_dec_length(p, ofs + 1, &len_octets, &len);
1107                       snmp_asn1_dec_s32t(p, ofs + 1 + len_octets, len, vptr);
1121                       snmp_asn1_dec_u32t(p, ofs + 1 + len_octets, len, vptr);
1132                       snmp_asn1_dec_raw(p, ofs + 1 + len_octets, len,
1150                   snmp_asn1_dec_oid(p, ofs + 1 + len_octets, len, &oid_value);
1176                           snmp_asn1_dec_raw(p, ofs + 1 + len_octets, len,
1196         ofs += (1 + len_octets + len);
1206     *ofs_ret = ofs;