repeater_t *repeaters_findbyhost(char *host) {
struct in_addr ipaddr;
if (comm_hostname_to_ip(host, &ipaddr))
return repeaters_findbyip(&ipaddr);
else
return NULL;
}
repeater_t *repeaters_add(struct in_addr *ipaddr) {
flag_t error = 0;
repeater_t *repeater = repeaters_findbyip(ipaddr);
if (ipaddr == NULL)
return NULL;
if (repeater == NULL) {
repeater = (repeater_t *)calloc(sizeof(repeater_t), 1);
if (repeater == NULL) {
console_log("repeaters [%s]: can't add new repeater, not enough memory\n", repeaters_get_display_string_for_ip(&repeater->ipaddr));
return NULL;
}
memcpy(&repeater->ipaddr, ipaddr, sizeof(struct in_addr));
// Expecting 8 rows of variable length BPTC coded embedded LC data.
// It will contain 77 data bits (without the Hamming (16,11) checksums
// and the last row of parity bits).
if (!vbptc_16_11_init(&repeater->slot[0].emb_sig_lc_vbptc_storage, 8))
error = 1;
else {
if (!vbptc_16_11_init(&repeater->slot[1].emb_sig_lc_vbptc_storage, 8)) {
vbptc_16_11_free(&repeater->slot[0].emb_sig_lc_vbptc_storage);
error = 1;
}
}
if (error) {
console_log("repeaters [%s]: can't add, not enough memory for embedded signalling lc storage\n", repeaters_get_display_string_for_ip(&repeater->ipaddr));
free(repeater);
return NULL;
}
if (repeaters_issnmpignoredforip(ipaddr))
repeater->snmpignored = 1;
repeater->slot[0].voicestream = voicestreams_get_stream_for_repeater(ipaddr, 1);
#ifdef AMBEDECODEVOICE
voicestreams_decode_ambe_init(repeater->slot[0].voicestream);
#endif
repeater->slot[1].voicestream = voicestreams_get_stream_for_repeater(ipaddr, 2);
#ifdef AMBEDECODEVOICE
voicestreams_decode_ambe_init(repeater->slot[1].voicestream);
#endif
if (repeaters != NULL) {
repeaters->prev = repeater;
repeater->next = repeaters;
}
repeaters = repeater;
console_log("repeaters [%s]: added, snmp ignored: %u ts1 stream: %s ts2 stream: %s\n",
repeaters_get_display_string_for_ip(&repeater->ipaddr), repeater->snmpignored,
repeater->slot[0].voicestream != NULL ? repeater->slot[0].voicestream->name : "no stream defined",
repeater->slot[1].voicestream != NULL ? repeater->slot[1].voicestream->name : "no stream defined");
}
repeater->last_active_time = time(NULL);
return repeater;
}
char *repeaters_get_display_string_for_ip(struct in_addr *ipaddr) {
repeater_t *foundrep;
foundrep = repeaters_findbyip(ipaddr);
if (foundrep && foundrep->callsign_lowercase[0] != 0)
return foundrep->callsign_lowercase;
if (comm_is_our_ipaddr(ipaddr))
return "ds";
return comm_get_ip_str(ipaddr);
}
static int snmp_get_rssi_cb(int operation, struct snmp_session *sp, int reqid, struct snmp_pdu *pdu, void *magic) {
char value[15] = {0,};
char *endptr = NULL;
int value_num = 0;
struct variable_list *vars = NULL;
repeater_t *repeater = NULL;
in_addr_t ipaddr;
flag_t dodbupdate = 0;
if (operation == NETSNMP_CALLBACK_OP_RECEIVED_MESSAGE) {
if (pdu->errstat == SNMP_ERR_NOERROR) {
ipaddr = inet_addr(sp->peername);
repeater = repeaters_findbyip((struct in_addr *)&ipaddr);
for (vars = pdu->variables; vars; vars = vars->next_variable) {
if (netsnmp_oid_equals(vars->name, vars->name_length, oid_rssi_ts1, oid_rssi_ts1_length) == 0) {
snprint_value(value, sizeof(value), vars->name, vars->name_length, vars);
errno = 0;
value_num = strtol(value+9, &endptr, 10); // +9: cutting "INTEGER: " text returned by snprint_value().
if (*endptr != 0 || errno != 0)
console_log(LOGLEVEL_DEBUG LOGLEVEL_SNMP "snmp: invalid ts1 rssi value received: %s\n", sp->peername);
else {
if (value_num > -200) {
if (repeater != NULL) {
repeater->slot[0].rssi = value_num;
if (repeater->slot[0].avg_rssi == 0)
repeater->slot[0].avg_rssi = value_num;
else
repeater->slot[0].avg_rssi = (repeater->slot[0].avg_rssi+value_num)/2.0;
dodbupdate = 1;
}
console_log(LOGLEVEL_SNMP "snmp [%s]: got ts1 rssi value %d\n", sp->peername, value_num);
}
}
} else if (netsnmp_oid_equals(vars->name, vars->name_length, oid_rssi_ts2, oid_rssi_ts2_length) == 0) {
snprint_value(value, sizeof(value), vars->name, vars->name_length, vars);
errno = 0;
value_num = strtol(value+9, &endptr, 10); // +9: cutting "INTEGER: " text returned by snprint_value().
if (*endptr != 0 || errno != 0)
console_log(LOGLEVEL_DEBUG LOGLEVEL_SNMP "snmp: invalid ts2 rssi value received: %s\n", value);
else {
if (value_num > -200) {
if (repeater != NULL) {
repeater->slot[1].rssi = value_num;
if (repeater->slot[1].avg_rssi == 0)
repeater->slot[1].avg_rssi = value_num;
else
repeater->slot[1].avg_rssi = (repeater->slot[1].avg_rssi+value_num)/2.0;
dodbupdate = 1;
}
console_log(LOGLEVEL_SNMP "snmp [%s]: got ts2 rssi value %d\n", sp->peername, value_num);
}
}
}
}
if (dodbupdate)
remotedb_update(repeater);
snmp_rssi_received = 1;
} else
console_log(LOGLEVEL_DEBUG "snmp: rssi read error\n");
} else
console_log(LOGLEVEL_DEBUG "snmp: rssi read timeout\n");
return 1;
}
static int snmp_get_repeaterinfo_cb(int operation, struct snmp_session *sp, int reqid, struct snmp_pdu *pdu, void *magic) {
char value[200] = {0,};
char *endptr = NULL;
int value_num = 0;
struct variable_list *vars = NULL;
repeater_t *repeater = NULL;
in_addr_t ipaddr;
char value_utf16[sizeof(value)/2] = {0,};
char value_utf8[sizeof(value_utf16)/2] = {0,};
int length = 0;
flag_t dodbupdate = 0;
if (operation == NETSNMP_CALLBACK_OP_RECEIVED_MESSAGE) {
if (pdu->errstat == SNMP_ERR_NOERROR) {
ipaddr = inet_addr(sp->peername);
repeater = repeaters_findbyip((struct in_addr *)&ipaddr);
for (vars = pdu->variables; vars; vars = vars->next_variable) {
if (netsnmp_oid_equals(vars->name, vars->name_length, oid_id, oid_id_length) == 0) {
snprint_value(value, sizeof(value), vars->name, vars->name_length, vars);
errno = 0;
value_num = strtol(value+9, &endptr, 10); // +9: cutting "INTEGER: " text returned by snprint_value().
if (*endptr != 0 || errno != 0)
console_log(LOGLEVEL_DEBUG "snmp [%s]: invalid id value received: %s\n", sp->peername, value);
else {
if (repeater != NULL) {
repeater->id = value_num;
dodbupdate = 1;
}
console_log("snmp [%s]: got id value %d\n", sp->peername, value_num);
}
} else if (netsnmp_oid_equals(vars->name, vars->name_length, oid_repeatertype, oid_repeatertype_length) == 0) {
snprint_value(value, sizeof(value), vars->name, vars->name_length, vars);
length = snmp_hexstring_to_bytearray(value+12, value_utf16, sizeof(value_utf16)); // +12: cutting "Hex-STRING: " text returned by snprint_value().
snmp_utf16_to_utf8(value_utf16, length, value_utf8, sizeof(value_utf8));
if (repeater != NULL) {
strncpy(repeater->type, value_utf8, sizeof(repeater->type));
dodbupdate = 1;
}
console_log("snmp [%s]: got repeater type value %s\n", sp->peername, value_utf8);
} else if (netsnmp_oid_equals(vars->name, vars->name_length, oid_fwversion, oid_fwversion_length) == 0) {
snprint_value(value, sizeof(value), vars->name, vars->name_length, vars);
length = snmp_hexstring_to_bytearray(value+12, value_utf16, sizeof(value_utf16)); // +12: cutting "Hex-STRING: " text returned by snprint_value().
snmp_utf16_to_utf8(value_utf16, length, value_utf8, sizeof(value_utf8));
if (repeater != NULL) {
strncpy(repeater->fwversion, value_utf8, sizeof(repeater->fwversion));
dodbupdate = 1;
}
console_log("snmp [%s]: got repeater fw version value %s\n", sp->peername, value_utf8);
} else if (netsnmp_oid_equals(vars->name, vars->name_length, oid_callsign, oid_callsign_length) == 0) {
snprint_value(value, sizeof(value), vars->name, vars->name_length, vars);
length = snmp_hexstring_to_bytearray(value+12, value_utf16, sizeof(value_utf16)); // +12: cutting "Hex-STRING: " text returned by snprint_value().
snmp_utf16_to_utf8(value_utf16, length, value_utf8, sizeof(value_utf8));
if (repeater != NULL) {
strncpy(repeater->callsign, value_utf8, sizeof(repeater->callsign));
dodbupdate = 1;
}
console_log("snmp [%s]: got repeater callsign value %s\n", sp->peername, value_utf8);
} else if (netsnmp_oid_equals(vars->name, vars->name_length, oid_dlfreq, oid_dlfreq_length) == 0) {
snprint_value(value, sizeof(value), vars->name, vars->name_length, vars);
errno = 0;
value_num = strtol(value+9, &endptr, 10); // +9: cutting "INTEGER: " text returned by snprint_value().
if (*endptr != 0 || errno != 0)
console_log(LOGLEVEL_DEBUG "snmp [%s]: invalid dl freq value received: %s\n", sp->peername, value);
else {
if (repeater != NULL) {
repeater->dlfreq = value_num;
dodbupdate = 1;
}
console_log("snmp [%s]: got dl freq value %d\n", sp->peername, value_num);
}
} else if (netsnmp_oid_equals(vars->name, vars->name_length, oid_ulfreq, oid_ulfreq_length) == 0) {
snprint_value(value, sizeof(value), vars->name, vars->name_length, vars);
errno = 0;
value_num = strtol(value+9, &endptr, 10); // +9: cutting "INTEGER: " text returned by snprint_value().
if (*endptr != 0 || errno != 0)
console_log(LOGLEVEL_DEBUG "snmp [%s]: invalid dl freq value received: %s\n", sp->peername, value);
else {
if (repeater != NULL) {
repeater->ulfreq = value_num;
dodbupdate = 1;
}
console_log("snmp [%s]: got ul freq value %d\n", sp->peername, value_num);
}
}
}
if (dodbupdate)
remotedb_update_repeater(repeater);
snmp_repeaterinfo_received = 1;
} else
console_log(LOGLEVEL_DEBUG "snmp [%s]: repeater info read error\n", sp->peername);
} else
console_log(LOGLEVEL_DEBUG "snmp [%s]: repeater info read timeout\n", sp->peername);
return 1;
}
