/*- * Copyright (c) 2006 The FreeBSD Project * All rights reserved. * * Author: Shteryana Shopova * * Redistribution of this software and documentation and use in source and * binary forms, with or without modification, are permitted provided that * the following conditions are met: * * 1. Redistributions of source code or documentation must retain the above * copyright notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * Textual conventions for OctetStrings * * $FreeBSD$ */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "bsnmptc.h" #include "bsnmptools.h" /* OctetString, DisplayString */ static char *snmp_oct2str(uint32_t, char *, char *); static char *snmp_str2asn_oid(char *, struct asn_oid *); static int parse_octetstring(struct snmp_value *, char *); /* DateAndTime */ static char *snmp_octstr2date(uint32_t, char *, char *); static char *snmp_date2asn_oid(char * , struct asn_oid *); static int parse_dateandtime(struct snmp_value *, char *); /* PhysAddress */ static char *snmp_oct2physAddr(uint32_t, char *, char *); static char *snmp_addr2asn_oid(char *, struct asn_oid *); static int parse_physaddress(struct snmp_value *, char *); /* NTPTimeStamp */ static char *snmp_oct2ntp_ts(uint32_t, char *, char *); static char *snmp_ntp_ts2asn_oid(char *, struct asn_oid *); static int parse_ntp_ts(struct snmp_value *, char *); /* BridgeId */ static char *snmp_oct2bridgeid(uint32_t, char *, char *); static char *snmp_bridgeid2oct(char *, struct asn_oid *); static int parse_bridge_id(struct snmp_value *, char *); /* BridgePortId */ static char *snmp_oct2bport_id(uint32_t, char *, char *); static char *snmp_bport_id2oct(char *, struct asn_oid *); static int parse_bport_id(struct snmp_value *, char *); /* InetAddress */ static char *snmp_oct2inetaddr(uint32_t len, char *octets, char *buf); static char *snmp_inetaddr2oct(char *str, struct asn_oid *oid); static int32_t parse_inetaddr(struct snmp_value *value, char *string); static char *snmp_oct2bits(uint32_t len, char *octets, char *buf); static char *snmp_bits2oct(char *str, struct asn_oid *oid); static int32_t parse_bits(struct snmp_value *value, char *string); struct snmp_text_conv { enum snmp_tc tc; const char *tc_str; int32_t len; snmp_oct2tc_f oct2tc; snmp_tc2oid_f tc2oid; snmp_tc2oct_f tc2oct; } text_convs[] = { { SNMP_STRING, "OctetString", SNMP_VAR_STRSZ, snmp_oct2str, snmp_str2asn_oid, parse_octetstring }, { SNMP_DISPLAYSTRING, "DisplayString" , SNMP_VAR_STRSZ, snmp_oct2str, snmp_str2asn_oid, parse_octetstring }, { SNMP_DATEANDTIME, "DateAndTime", SNMP_DATETIME_STRSZ, snmp_octstr2date, snmp_date2asn_oid, parse_dateandtime }, { SNMP_PHYSADDR, "PhysAddress", SNMP_PHYSADDR_STRSZ, snmp_oct2physAddr, snmp_addr2asn_oid, parse_physaddress }, { SNMP_ATMESI, "AtmESI", SNMP_PHYSADDR_STRSZ, snmp_oct2physAddr, snmp_addr2asn_oid, parse_physaddress }, { SNMP_NTP_TIMESTAMP, "NTPTimeStamp", SNMP_NTP_TS_STRSZ, snmp_oct2ntp_ts, snmp_ntp_ts2asn_oid, parse_ntp_ts }, { SNMP_MACADDRESS, "MacAddress", SNMP_PHYSADDR_STRSZ, snmp_oct2physAddr, snmp_addr2asn_oid, parse_physaddress }, { SNMP_BRIDGE_ID, "BridgeId", SNMP_BRIDGEID_STRSZ, snmp_oct2bridgeid, snmp_bridgeid2oct, parse_bridge_id }, { SNMP_BPORT_ID, "BridgePortId", SNMP_BPORT_STRSZ, snmp_oct2bport_id, snmp_bport_id2oct, parse_bport_id }, { SNMP_INETADDRESS, "InetAddress", SNMP_INADDRS_STRSZ, snmp_oct2inetaddr, snmp_inetaddr2oct, parse_inetaddr }, { SNMP_TC_OWN, "BITS", SNMP_VAR_STRSZ, snmp_oct2bits, snmp_bits2oct, parse_bits }, { SNMP_UNKNOWN, "Unknown", SNMP_VAR_STRSZ, snmp_oct2str, snmp_str2asn_oid, parse_octetstring } /* keep last */ }; /* Common API */ enum snmp_tc snmp_get_tc(char *str) { int i; for (i = 0; i < SNMP_UNKNOWN; i++) { if (!strncmp(text_convs[i].tc_str, str, strlen(text_convs[i].tc_str))) return (text_convs[i].tc); } return (SNMP_STRING); } char * snmp_oct2tc(enum snmp_tc tc, uint32_t len, char *octets) { uint32_t tc_len; char * buf; if (tc < 0 || tc > SNMP_UNKNOWN) tc = SNMP_UNKNOWN; if (text_convs[tc].len > 0) tc_len = text_convs[tc].len; else tc_len = 2 * len + 3; if ((buf = malloc(tc_len)) == NULL ) { syslog(LOG_ERR, "malloc failed - %s", strerror(errno)); return (NULL); } memset(buf, 0, tc_len); if (text_convs[tc].oct2tc(len, octets, buf) == NULL) { free(buf); return (NULL); } return (buf); } char * snmp_tc2oid(enum snmp_tc tc, char *str, struct asn_oid *oid) { if (tc < 0 || tc > SNMP_UNKNOWN) tc = SNMP_UNKNOWN; return (text_convs[tc].tc2oid(str, oid)); } int32_t snmp_tc2oct(enum snmp_tc tc, struct snmp_value *value, char *string) { if (tc < 0 || tc > SNMP_UNKNOWN) tc = SNMP_UNKNOWN; return (text_convs[tc].tc2oct(value, string)); } /***************************************************** * Basic OctetString type. */ static char * snmp_oct2str(uint32_t len, char *octets, char *buf) { uint8_t binary = 0; uint32_t i; char *ptr; if (len > MAX_OCTSTRING_LEN || octets == NULL || buf == NULL) return (NULL); for (ptr = buf, i = 0; i < len; i++) if (!isprint(octets[i])) { binary = 1; buf += sprintf(buf, "0x"); break; } for (ptr = buf, i = 0; i < len; i++) if (!binary) ptr += sprintf(ptr, "%c", octets[i]); else ptr += sprintf(ptr, "%2.2x", (u_char)octets[i]); return (buf); } static char * snmp_str2asn_oid(char *str, struct asn_oid *oid) { uint32_t i, len = 0; /* * OctetStrings are allowed max length of ASN_MAXOCTETSTRING, * but trying to index an entry with such a long OctetString * will fail anyway. */ for (len = 0; len < ASN_MAXOIDLEN; len++) { if (strchr(",]", *(str + len)) != NULL) break; } if (len >= ASN_MAXOIDLEN) return (NULL); if (snmp_suboid_append(oid, (asn_subid_t) len) < 0) return (NULL); for (i = 0; i < len; i++) if (snmp_suboid_append(oid, (asn_subid_t) *(str + i)) < 0) return (NULL); return (str + len); } static int32_t parse_octetstring(struct snmp_value *value, char *val) { size_t len; if ((len = strlen(val)) >= MAX_OCTSTRING_LEN) { warnx("Octetstring too long - %d is max allowed", MAX_OCTSTRING_LEN - 1); return (-1); } value->v.octetstring.len = len; if((value->v.octetstring.octets = malloc(len)) == NULL) { syslog(LOG_ERR,"malloc failed: %s", strerror(errno)); return (-1); } memcpy(value->v.octetstring.octets, val, len); value->syntax = SNMP_SYNTAX_OCTETSTRING; return (0); } /************************************************************* * DateAndTime ************************************************************* * rfc 2579 specification: * DateAndTime ::= TEXTUAL-CONVENTION * DISPLAY-HINT "2d-1d-1d,1d:1d:1d.1d,1a1d:1d" * STATUS current * DESCRIPTION * "A date-time specification. * * field octets contents range * ----- ------ -------- ----- * 1 1-2 year* 0..65536 * 2 3 month 1..12 * 3 4 day 1..31 * 4 5 hour 0..23 * 5 6 minutes 0..59 * 6 7 seconds 0..60 * (use 60 for leap-second) * 7 8 deci-seconds 0..9 * 8 9 direction from UTC '+' / '-' * 9 10 hours from UTC* 0..13 * 10 11 minutes from UTC 0..59 * * * Notes: * - the value of year is in network-byte order * - daylight saving time in New Zealand is +13 * * For example, Tuesday May 26, 1992 at 1:30:15 PM EDT would be * displayed as: * * 1992-5-26,13:30:15.0,-4:0 */ static char * snmp_octstr2date(uint32_t len, char *octets, char *buf) { int year; char *ptr; if (len != SNMP_DATETIME_OCTETS || octets == NULL || buf == NULL) return (NULL); buf[0]= '\0'; year = (octets[0] << 8); year += (octets[1]); ptr = buf; ptr += sprintf(ptr, "%4.4d-%.2d-%.2d, ", year, octets[2],octets[3]); ptr += sprintf(ptr, "%2.2d:%2.2d:%2.2d.%.2d, ", octets[4],octets[5], octets[6],octets[7]); ptr += sprintf(ptr, "%c%.2d:%.2d", octets[8],octets[9],octets[10]); return (buf); } static char * snmp_date2asn_oid(char *str, struct asn_oid *oid) { char *endptr, *ptr; uint32_t v; int32_t saved_errno; if (snmp_suboid_append(oid, (asn_subid_t) SNMP_DATETIME_OCTETS) < 0) return (NULL); /* Read 'YYYY-' and write it in two subs. */ ptr = str; saved_errno = errno; errno = 0; v = strtoul(ptr, &endptr, 10); if (v > 0xffff) goto error; else errno = saved_errno; if (*endptr != '-') goto error1; if (snmp_suboid_append(oid, (asn_subid_t) ((v & 0xff00) >> 8)) < 0) return (NULL); if (snmp_suboid_append(oid, (asn_subid_t) (v & 0xff)) < 0) return (NULL); /* 'MM-' */ ptr = endptr + 1; saved_errno = errno; v = strtoul(ptr, &endptr, 10); if (errno != 0) goto error; else errno = saved_errno; if (*endptr != '-') goto error1; if (snmp_suboid_append(oid, (asn_subid_t) v) < 0) return (NULL); /* 'DD,' */ ptr = endptr + 1; saved_errno = errno; v = strtoul(ptr, &endptr, 10); if (errno != 0) goto error; else errno = saved_errno; if (*endptr != '-') goto error1; if (snmp_suboid_append(oid, (asn_subid_t) v) < 0) return (NULL); /* 'HH:' */ ptr = endptr + 1; saved_errno = errno; v = strtoul(ptr, &endptr, 10); if (errno != 0) goto error; else errno = saved_errno; if (*endptr != ':') goto error1; if (snmp_suboid_append(oid, (asn_subid_t) v) < 0) return (NULL); /* 'MM:' */ ptr = endptr + 1; saved_errno = errno; v = strtoul(ptr, &endptr, 10); if (errno != 0) goto error; else errno = saved_errno; if (*endptr != ':') goto error1; if (snmp_suboid_append(oid, (asn_subid_t) v) < 0) return (NULL); /* 'SS.' */ ptr = endptr + 1; saved_errno = errno; v = strtoul(ptr, &endptr, 10); if (errno != 0) goto error; else errno = saved_errno; if (*endptr != '.') goto error1; if (snmp_suboid_append(oid, (asn_subid_t) v) < 0) return (NULL); /* 'M(mseconds),' */ ptr = endptr + 1; saved_errno = errno; v = strtoul(ptr, &endptr, 10); if (errno != 0) goto error; else errno = saved_errno; if (*endptr != ',') goto error1; if (snmp_suboid_append(oid, (asn_subid_t) v) < 0) return (NULL); /* 'UTC' - optional */ ptr = endptr + 1; if (*ptr == 'U' && *(ptr + 1) == 'T' && *(ptr + 1) == 'C') ptr += 3; /* '+/-' */ if (*ptr == '-' || *ptr == '+') { if (snmp_suboid_append(oid, (asn_subid_t) (*ptr)) < 0) return (NULL); } else goto error1; /* 'HH:' */ ptr = endptr + 1; saved_errno = errno; v = strtoul(ptr, &endptr, 10); if (errno != 0) goto error; else errno = saved_errno; if (*endptr != ':') goto error1; if (snmp_suboid_append(oid, (asn_subid_t) v) < 0) return (NULL); /* 'MM' - last one - ignore endptr here. */ ptr = endptr + 1; saved_errno = errno; v = strtoul(ptr, &endptr, 10); if (errno != 0) goto error; else errno = saved_errno; if (snmp_suboid_append(oid, (asn_subid_t) v) < 0) return (NULL); return (endptr); error: errno = saved_errno; error1: warnx("Date value %s not supported", str); return (NULL); } /* Read a DateAndTime string eg. 1992-5-26,13:30:15.0,-4:0. */ static int32_t parse_dateandtime(struct snmp_value *sv, char *val) { char *endptr; uint32_t v; uint8_t date[SNMP_DATETIME_OCTETS]; /* 'YYYY-' */ v = strtoul(val, &endptr, 10); if (v > 0xffff || *endptr != '-') goto error; date[0] = ((v & 0xff00) >> 8); date[1] = (v & 0xff); val = endptr + 1; /* 'MM-' */ v = strtoul(val, &endptr, 10); if (v == 0 || v > 12 || *endptr != '-') goto error; date[2] = v; val = endptr + 1; /* 'DD,' */ v = strtoul(val, &endptr, 10); if (v == 0 || v > 31 || *endptr != ',') goto error; date[3] = v; val = endptr + 1; /* 'HH:' */ v = strtoul(val, &endptr, 10); if (v > 23 || *endptr != ':') goto error; date[4] = v; val = endptr + 1; /* 'MM:' */ v = strtoul(val, &endptr, 10); if (v > 59 || *endptr != ':') goto error; date[5] = v; val = endptr + 1; /* 'SS.' */ v = strtoul(val, &endptr, 10); if (v > 60 || *endptr != '.') goto error; date[6] = v; val = endptr + 1; /* '(deci-)s,' */ v = strtoul(val, &endptr, 10); if (v > 9 || *endptr != ',') goto error; date[7] = v; val = endptr + 1; /* offset - '+/-' */ if (*val != '-' && *val != '+') goto error; date[8] = (uint8_t) *val; val = endptr + 1; /* 'HH:' - offset from UTC */ v = strtoul(val, &endptr, 10); if (v > 13 || *endptr != ':') goto error; date[9] = v; val = endptr + 1; /* 'MM'\0'' offset from UTC */ v = strtoul(val, &endptr, 10); if (v > 59 || *endptr != '\0') goto error; date[10] = v; if ((sv->v.octetstring.octets = malloc(SNMP_DATETIME_OCTETS)) == NULL) { warnx("malloc() failed - %s", strerror(errno)); return (-1); } sv->v.octetstring.len = SNMP_DATETIME_OCTETS; memcpy(sv->v.octetstring.octets, date, SNMP_DATETIME_OCTETS); sv->syntax = SNMP_SYNTAX_OCTETSTRING; return (1); error: warnx("Date value %s not supported", val); return (-1); } /************************************************************** * PhysAddress */ static char * snmp_oct2physAddr(uint32_t len, char *octets, char *buf) { char *ptr; uint32_t i; if (len != SNMP_PHYSADDR_OCTETS || octets == NULL || buf == NULL) return (NULL); buf[0]= '\0'; ptr = buf; ptr += sprintf(ptr, "%2.2x", octets[0]); for (i = 1; i < 6; i++) ptr += sprintf(ptr, ":%2.2x", octets[i]); return (buf); } static char * snmp_addr2asn_oid(char *str, struct asn_oid *oid) { char *endptr, *ptr; uint32_t v, i; int saved_errno; if (snmp_suboid_append(oid, (asn_subid_t) SNMP_PHYSADDR_OCTETS) < 0) return (NULL); ptr = str; for (i = 0; i < 5; i++) { saved_errno = errno; v = strtoul(ptr, &endptr, 16); errno = saved_errno; if (v > 0xff) { warnx("Integer value %s not supported", str); return (NULL); } if (*endptr != ':') { warnx("Failed adding oid - %s",str); return (NULL); } if (snmp_suboid_append(oid, (asn_subid_t) v) < 0) return (NULL); ptr = endptr + 1; } /* The last one - don't check the ending char here. */ saved_errno = errno; v = strtoul(ptr, &endptr, 16); errno = saved_errno; if (v > 0xff) { warnx("Integer value %s not supported", str); return (NULL); } if (snmp_suboid_append(oid, (asn_subid_t) v) < 0) return (NULL); return (endptr); } static int32_t parse_physaddress(struct snmp_value *sv, char *val) { char *endptr; int32_t i; uint32_t v; uint8_t phys_addr[SNMP_PHYSADDR_OCTETS]; for (i = 0; i < 5; i++) { v = strtoul(val, &endptr, 16); if (v > 0xff) { warnx("Integer value %s not supported", val); return (-1); } if(*endptr != ':') { warnx("Failed reading octet - %s", val); return (-1); } phys_addr[i] = v; val = endptr + 1; } /* The last one - don't check the ending char here. */ v = strtoul(val, &endptr, 16); if (v > 0xff) { warnx("Integer value %s not supported", val); return (-1); } phys_addr[5] = v; if ((sv->v.octetstring.octets = malloc(SNMP_PHYSADDR_OCTETS)) == NULL) { syslog(LOG_ERR,"malloc failed: %s", strerror(errno)); return (-1); } sv->v.octetstring.len = SNMP_PHYSADDR_OCTETS; memcpy(sv->v.octetstring.octets, phys_addr, SNMP_PHYSADDR_OCTETS); sv->syntax = SNMP_SYNTAX_OCTETSTRING; return (1); } /************************************************************** * NTPTimeStamp ************************************************************** * NTP MIB, Revision 0.2, 7/25/97: * NTPTimeStamp ::= TEXTUAL-CONVENTION * DISPLAY-HINT "4x.4x" * STATUS current * DESCRIPTION * "" * SYNTAX OCTET STRING (SIZE(8)) */ static char * snmp_oct2ntp_ts(uint32_t len, char *octets, char *buf) { char *ptr; uint32_t i; if (len != SNMP_NTP_TS_OCTETS || octets == NULL || buf == NULL) return (NULL); buf[0]= '\0'; ptr = buf; i = octets[0] * 1000 + octets[1] * 100 + octets[2] * 10 + octets[3]; ptr += sprintf(ptr, "%4.4d", i); i = octets[4] * 1000 + octets[5] * 100 + octets[6] * 10 + octets[7]; ptr += sprintf(ptr, ".%4.4d", i); return (buf); } static char * snmp_ntp_ts2asn_oid(char *str, struct asn_oid *oid) { char *endptr, *ptr; uint32_t v, i, d; struct asn_oid suboid; int saved_errno; if (snmp_suboid_append(oid, (asn_subid_t) SNMP_NTP_TS_OCTETS) < 0) return (NULL); ptr = str; saved_errno = errno; v = strtoul(ptr, &endptr, 10); if (errno != 0 || (v / 1000) > 9) { warnx("Integer value %s not supported", str); errno = saved_errno; return (NULL); } else errno = saved_errno; if (*endptr != '.') { warnx("Failed adding oid - %s",str); return (NULL); } memset(&suboid, 0, sizeof(struct asn_oid)); suboid.len = SNMP_NTP_TS_OCTETS; for (i = 0, d = 1000; i < 4; i++) { suboid.subs[i] = v / d; v = v % d; d = d / 10; } ptr = endptr + 1; saved_errno = errno; v = strtoul(ptr, &endptr, 10); if (errno != 0 || (v / 1000) > 9) { warnx("Integer value %s not supported", str); errno = saved_errno; return (NULL); } else errno = saved_errno; for (i = 0, d = 1000; i < 4; i++) { suboid.subs[i + 4] = v / d; v = v % d; d = d / 10; } asn_append_oid(oid, &suboid); return (endptr); } static int32_t parse_ntp_ts(struct snmp_value *sv, char *val) { char *endptr; int32_t i, d, saved_errno; uint32_t v; uint8_t ntp_ts[SNMP_NTP_TS_OCTETS]; saved_errno = errno; v = strtoul(val, &endptr, 10); if (errno != 0 || (v / 1000) > 9) { saved_errno = errno; warnx("Integer value %s not supported", val); return (-1); } else saved_errno = errno; if (*endptr != '.') { warnx("Failed reading octet - %s", val); return (-1); } for (i = 0, d = 1000; i < 4; i++) { ntp_ts[i] = v / d; v = v % d; d = d / 10; } val = endptr + 1; saved_errno = errno; v = strtoul(val, &endptr, 10); if (errno != 0 || (v / 1000) > 9) { saved_errno = errno; warnx("Integer value %s not supported", val); return (-1); } else saved_errno = errno; for (i = 0, d = 1000; i < 4; i++) { ntp_ts[i + 4] = v / d; v = v % d; d = d / 10; } if ((sv->v.octetstring.octets = malloc(SNMP_NTP_TS_OCTETS)) == NULL) { syslog(LOG_ERR,"malloc failed: %s", strerror(errno)); return (-1); } sv->v.octetstring.len = SNMP_NTP_TS_OCTETS; memcpy(sv->v.octetstring.octets, ntp_ts, SNMP_NTP_TS_OCTETS); sv->syntax = SNMP_SYNTAX_OCTETSTRING; return (1); } /************************************************************** * BridgeId ************************************************************** * BRIDGE-MIB, REVISION "200509190000Z" * BridgeId ::= TEXTUAL-CONVENTION * STATUS current * DESCRIPTION * "The Bridge-Identifier, as used in the Spanning Tree * Protocol, to uniquely identify a bridge. Its first two * octets (in network byte order) contain a priority value, * and its last 6 octets contain the MAC address used to * refer to a bridge in a unique fashion (typically, the * numerically smallest MAC address of all ports on the * bridge)." * SYNTAX OCTET STRING (SIZE (8)) */ static char * snmp_oct2bridgeid(uint32_t len, char *octets, char *buf) { char *ptr; uint32_t i, priority; if (len != SNMP_BRIDGEID_OCTETS || octets == NULL || buf == NULL) return (NULL); buf[0]= '\0'; ptr = buf; priority = octets[0] << 8; priority += octets[1]; if (priority > SNMP_MAX_BRIDGE_PRIORITY) { warnx("Invalid bridge priority %d", priority); return (NULL); } else ptr += sprintf(ptr, "%d.", octets[0]); ptr += sprintf(ptr, "%2.2x", octets[2]); for (i = 1; i < 6; i++) ptr += sprintf(ptr, ":%2.2x", octets[i + 2]); return (buf); } static char * snmp_bridgeid2oct(char *str, struct asn_oid *oid) { char *endptr, *ptr; uint32_t v, i; int32_t saved_errno; if (snmp_suboid_append(oid, (asn_subid_t) SNMP_BRIDGEID_OCTETS) < 0) return (NULL); ptr = str; /* Read the priority. */ saved_errno = errno; v = strtoul(ptr, &endptr, 10); errno = 0; if (v > SNMP_MAX_BRIDGE_PRIORITY || errno != 0 || *endptr != '.') { errno = saved_errno; warnx("Bad bridge priority value %d", v); return (NULL); } if (snmp_suboid_append(oid, (asn_subid_t) (v & 0xff00)) < 0) return (NULL); if (snmp_suboid_append(oid, (asn_subid_t) (v & 0xff)) < 0) return (NULL); ptr = endptr + 1; for (i = 0; i < 5; i++) { saved_errno = errno; v = strtoul(ptr, &endptr, 16); errno = saved_errno; if (v > 0xff) { warnx("Integer value %s not supported", str); return (NULL); } if (*endptr != ':') { warnx("Failed adding oid - %s",str); return (NULL); } if (snmp_suboid_append(oid, (asn_subid_t) v) < 0) return (NULL); ptr = endptr + 1; } /* The last one - don't check the ending char here. */ saved_errno = errno; v = strtoul(ptr, &endptr, 16); errno = saved_errno; if (v > 0xff) { warnx("Integer value %s not supported", str); return (NULL); } if (snmp_suboid_append(oid, (asn_subid_t) v) < 0) return (NULL); return (endptr); } static int32_t parse_bridge_id(struct snmp_value *sv, char *string) { char *ptr, *endptr; int32_t i, saved_errno; uint32_t v; uint8_t bridge_id[SNMP_BRIDGEID_OCTETS]; ptr = string; /* Read the priority. */ saved_errno = errno; errno = 0; v = strtoul(string, &endptr, 10); errno = saved_errno; if (v > SNMP_MAX_BRIDGE_PRIORITY || errno != 0 || *endptr != '.') { errno = saved_errno; warnx("Bad bridge priority value %d", v); return (-1); } bridge_id[0] = (v & 0xff00); bridge_id[1] = (v & 0xff); string = endptr + 1; for (i = 0; i < 5; i++) { v = strtoul(string, &endptr, 16); if (v > 0xff) { warnx("Integer value %s not supported", string); return (-1); } if(*endptr != ':') { warnx("Failed reading octet - %s", string); return (-1); } bridge_id[i + 2] = v; string = endptr + 1; } /* The last one - don't check the ending char here. */ v = strtoul(string, &endptr, 16); if (v > 0xff) { warnx("Integer value %s not supported", string); return (-1); } bridge_id[7] = v; if ((sv->v.octetstring.octets = malloc(SNMP_BRIDGEID_OCTETS)) == NULL) { syslog(LOG_ERR,"malloc failed: %s", strerror(errno)); return (-1); } sv->v.octetstring.len = SNMP_BRIDGEID_OCTETS; memcpy(sv->v.octetstring.octets, bridge_id, SNMP_BRIDGEID_OCTETS); sv->syntax = SNMP_SYNTAX_OCTETSTRING; return (1); } /************************************************************** * BridgePortId ************************************************************** * BEGEMOT-BRIDGE-MIB, LAST-UPDATED "200608100000Z" * BridgePortId ::= TEXTUAL-CONVENTION * DISPLAY-HINT "1x.1x" * STATUS current * DESCRIPTION * "A port identifier that contains a bridge port's STP priority * in the first octet and the port number in the second octet." * SYNTAX OCTET STRING (SIZE(2)) */ static char * snmp_oct2bport_id(uint32_t len, char *octets, char *buf) { char *ptr; if (len != SNMP_BPORT_OCTETS || octets == NULL || buf == NULL) return (NULL); buf[0]= '\0'; ptr = buf; ptr += sprintf(ptr, "%d.", octets[0]); ptr += sprintf(ptr, "%d", octets[1]); return (buf); } static char * snmp_bport_id2oct(char *str, struct asn_oid *oid) { char *endptr, *ptr; uint32_t v; int saved_errno; if (snmp_suboid_append(oid, (asn_subid_t) SNMP_BPORT_OCTETS) < 0) return (NULL); ptr = str; /* Read the priority. */ saved_errno = errno; v = strtoul(ptr, &endptr, 10); errno = 0; if (v > SNMP_MAX_BPORT_PRIORITY || errno != 0 || *endptr != '.') { errno = saved_errno; warnx("Bad bridge port priority value %d", v); return (NULL); } if (snmp_suboid_append(oid, (asn_subid_t) v) < 0) return (NULL); saved_errno = errno; v = strtoul(ptr, &endptr, 16); errno = saved_errno; if (v > 0xff) { warnx("Bad port number - %d", v); return (NULL); } if (snmp_suboid_append(oid, (asn_subid_t) v) < 0) return (NULL); return (endptr); } static int32_t parse_bport_id(struct snmp_value *value, char *string) { char *ptr, *endptr; int saved_errno; uint32_t v; uint8_t bport_id[SNMP_BPORT_OCTETS]; ptr = string; /* Read the priority. */ saved_errno = errno; errno = 0; v = strtoul(string, &endptr, 10); errno = saved_errno; if (v > SNMP_MAX_BPORT_PRIORITY || errno != 0 || *endptr != '.') { errno = saved_errno; warnx("Bad bridge port priority value %d", v); return (-1); } bport_id[0] = v; string = endptr + 1; v = strtoul(string, &endptr, 16); if (v > 0xff) { warnx("Bad port number - %d", v); return (-1); } bport_id[1] = v; if ((value->v.octetstring.octets = malloc(SNMP_BPORT_OCTETS)) == NULL) { syslog(LOG_ERR,"malloc failed: %s", strerror(errno)); return (-1); } value->v.octetstring.len = SNMP_BPORT_OCTETS; memcpy(value->v.octetstring.octets, bport_id, SNMP_BPORT_OCTETS); value->syntax = SNMP_SYNTAX_OCTETSTRING; return (1); } /************************************************************** * InetAddress ************************************************************** * INET-ADDRESS-MIB, REVISION "200502040000Z" * InetAddress ::= TEXTUAL-CONVENTION * STATUS current * DESCRIPTION * "Denotes a generic Internet address. * * An InetAddress value is always interpreted within the context * of an InetAddressType value. Every usage of the InetAddress * textual convention is required to specify the InetAddressType * object that provides the context. It is suggested that the * InetAddressType object be logically registered before the * object(s) that use the InetAddress textual convention, if * they appear in the same logical row. * * The value of an InetAddress object must always be * consistent with the value of the associated InetAddressType * object. Attempts to set an InetAddress object to a value * inconsistent with the associated InetAddressType * must fail with an inconsistentValue error. * * When this textual convention is used as the syntax of an * index object, there may be issues with the limit of 128 * sub-identifiers specified in SMIv2, STD 58. In this case, * the object definition MUST include a 'SIZE' clause to * limit the number of potential instance sub-identifiers; * otherwise the applicable constraints MUST be stated in * the appropriate conceptual row DESCRIPTION clauses, or * in the surrounding documentation if there is no single * DESCRIPTION clause that is appropriate." * SYNTAX OCTET STRING (SIZE (0..255)) ************************************************************** * TODO: FIXME!!! syrinx: Since we do not support checking the * consistency of a varbinding based on the value of a previous * one, try to guess the type of address based on the * OctetString SIZE - 4 for IPv4, 16 for IPv6, others currently * not supported. */ static char * snmp_oct2inetaddr(uint32_t len, char *octets, char *buf) { int af; void *ip; struct in_addr ipv4; struct in6_addr ipv6; if (len > MAX_OCTSTRING_LEN || octets == NULL || buf == NULL) return (NULL); switch (len) { /* XXX: FIXME - IPv4*/ case 4: memcpy(&ipv4.s_addr, octets, sizeof(ipv4.s_addr)); af = AF_INET; ip = &ipv4; break; /* XXX: FIXME - IPv4*/ case 16: memcpy(ipv6.s6_addr, octets, sizeof(ipv6.s6_addr)); af = AF_INET6; ip = &ipv6; break; default: return (NULL); } if (inet_ntop(af, ip, buf, SNMP_INADDRS_STRSZ) == NULL) { warnx("inet_ntop failed - %s", strerror(errno)); return (NULL); } return (buf); } static char * snmp_inetaddr2oct(char *str, struct asn_oid *oid) { return (NULL); } static int32_t parse_inetaddr(struct snmp_value *value, char *string) { return (-1); } /************************************************************** * SNMP BITS type - XXX: FIXME **************************************************************/ static char * snmp_oct2bits(uint32_t len, char *octets, char *buf) { int i, bits; uint64_t value; if (len > sizeof(value) || octets == NULL || buf == NULL) return (NULL); for (i = len, value = 0, bits = 0; i > 0; i--, bits += 8) value += octets[i] << bits; buf[0]= '\0'; sprintf(buf, "0x%llx.",(long long unsigned) value); return (buf); } static char * snmp_bits2oct(char *str, struct asn_oid *oid) { char *endptr; int i, size, bits, saved_errno; uint64_t v, mask = 0xFF00000000000000; saved_errno = errno; errno = 0; v = strtoull(str, &endptr, 16); if (errno != 0) { warnx("Bad BITS value %s - %s", str, strerror(errno)); errno = saved_errno; return (NULL); } bits = 8; /* Determine length - up to 8 octets supported so far. */ for (size = sizeof(v); size > 0; size--) { if ((v & mask) != 0) break; mask = mask >> bits; } if (size == 0) size = 1; if (snmp_suboid_append(oid, (asn_subid_t) size) < 0) return (NULL); for (i = 0, bits = 0; i < size; i++, bits += 8) if (snmp_suboid_append(oid, (asn_subid_t)((v & mask) >> bits)) < 0) return (NULL); return (endptr); } static int32_t parse_bits(struct snmp_value *value, char *string) { char *endptr; int i, size, bits, saved_errno; uint64_t v, mask = 0xFF00000000000000; saved_errno = errno; errno = 0; v = strtoull(string, &endptr, 16); if (errno != 0) { warnx("Bad BITS value %s - %s", string, strerror(errno)); errno = saved_errno; return (-1); } bits = 8; /* Determine length - up to 8 octets supported so far. */ for (size = sizeof(v); size > 0; size--) { if ((v & mask) != 0) break; mask = mask >> bits; } if (size == 0) size = 1; if ((value->v.octetstring.octets = malloc(size)) == NULL) { syslog(LOG_ERR, "malloc failed: %s", strerror(errno)); return (-1); } value->v.octetstring.len = size; for (i = 0, bits = 0; i < size; i++, bits += 8) value->v.octetstring.octets[i] = (v & mask) >> bits; value->syntax = SNMP_SYNTAX_OCTETSTRING; return (1); }