221 lines
6.2 KiB
Bash
221 lines
6.2 KiB
Bash
#!/bin/sh
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NAME=dump1090-mutability
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CONFIGFILE=/etc/default/$NAME
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set -e
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. /usr/share/debconf/confmodule
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db_set_yn() {
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if [ "x$2" = "xyes" ]; then db_set $1 true; else db_set $1 false; fi
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}
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# Load config file, if it exists.
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if [ -e $CONFIGFILE ]; then
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. $CONFIGFILE || true
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# Store values from config file into
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# debconf db.
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db_set_yn $NAME/auto-start "$START_DUMP1090"
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db_set $NAME/run-as-user "$DUMP1090_USER"
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db_set $NAME/log-file "$LOGFILE"
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db_set $NAME/rtlsdr-device "$DEVICE"
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db_set $NAME/rtlsdr-gain "$GAIN"
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db_set $NAME/rtlsdr-ppm "$PPM"
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db_set_yn $NAME/rtlsdr-oversample "$OVERSAMPLE"
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db_set_yn $NAME/decode-fixcrc "$FIX_CRC"
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db_set_yn $NAME/decode-phase-enhance "$PHASE_ENHANCE"
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db_set_yn $NAME/decode-aggressive "$AGGRESSIVE"
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db_set $NAME/decode-lat "$LAT"
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db_set $NAME/decode-lon "$LON"
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db_set $NAME/decode-max-range "$MAX_RANGE"
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db_set $NAME/net-http-port "$HTTP_PORT"
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db_set $NAME/net-ri-port "$RAW_INPUT_PORT"
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db_set $NAME/net-ro-port "$RAW_OUTPUT_PORT"
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db_set $NAME/net-bi-port "$BEAST_INPUT_PORT"
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db_set $NAME/net-bo-port "$BEAST_OUTPUT_PORT"
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db_set $NAME/net-sbs-port "$SBS_OUTPUT_PORT"
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db_set $NAME/net-fatsv-port "$FATSV_OUTPUT_PORT"
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db_set $NAME/net-heartbeat "$NET_HEARTBEAT"
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db_set $NAME/net-out-size "$NET_OUTPUT_SIZE"
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db_set $NAME/net-out-interval "$NET_OUTPUT_INTERVAL"
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db_set $NAME/net-buffer "$NET_BUFFER"
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db_set $NAME/net-bind-address "$NET_BIND_ADDRESS"
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db_set $NAME/stats-interval "$STATS_INTERVAL"
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db_set $NAME/json-dir "$JSON_DIR"
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db_set $NAME/json-interval "$JSON_INTERVAL"
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db_set $NAME/json-location-accuracy "$JSON_LOCATION_ACCURACY"
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db_set_yn $NAME/log-decoded-messages "$LOG_DECODED_MESSAGES"
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db_set $NAME/extra-args "$EXTRA_ARGS"
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fi
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# Ask questions.
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db_input_verify() {
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# $1 = priority
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# $2 = db key
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# $3 = verification function, should return 0 if OK
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PRI=$1; KEY=$2; VERIFY=$3
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set +e
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db_input $PRI $KEY; RESULT=$?
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db_go
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set -e
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ASKED=0
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while :
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do
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db_get $KEY
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if $VERIFY $RET; then return 0; fi
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if [ $RESULT -ne 0 ]; then
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# db_input failed, and the existing value does not validate
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if [ $RESULT = 30 ] && [ $ASKED = 0 ]
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then
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# question was skipped, but existing value is invalid
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# bump priority and try again (once)
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PRI=high
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ASKED=1
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else
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# give up, use the default value
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db_reset $KEY
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return 0
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fi
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else
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# db_input was OK, but the value did not verify.
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# show an error message
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db_input high dump1090-mutability/invalid-$VERIFY || true
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fi
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# try again
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set +e
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db_fset $KEY seen false
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db_input high $KEY; RESULT=$?
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db_go
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set -e
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done
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}
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is_unsigned_int() {
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if echo "$1" | grep -Eq '^(0|+?[1-9][0-9]*)$'; then return 0; else return 1; fi
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}
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is_unsigned_int_or_empty() {
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if [ -z "$1" ]; then return 0
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elif is_unsigned_int "$1"; then return 0
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else return 1; fi
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}
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is_positive_int() {
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if echo "$1" | grep -Eq '^(+?[1-9][0-9]*)$'; then return 0; else return 1; fi
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}
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is_signed_int() {
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if echo "$1" | grep -Eq '^(0|[+-]?[1-9][0-9]*)$'; then return 0; else return 1; fi
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}
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is_signed_int_or_empty() {
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if [ -z "$1" ]; then return 0
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elif is_signed_int "$1"; then return 0
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else return 1; fi
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}
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is_ipaddrish() {
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if echo "$1" | grep -Eq '^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$'; then return 0; else return 1; fi
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}
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is_ipaddrish_or_empty() {
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if [ -z "$1" ]; then return 0
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elif is_ipaddrish "$1"; then return 0
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else return 1; fi
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}
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is_number() {
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if echo "$1" | grep -Eq '^(0|[+-]?[1-9][0-9]*)(\.[0-9]+)?$'; then return 0; else return 1; fi
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}
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is_number_or_empty() {
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if [ -z "$1" ]; then return 0
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elif is_number "$1"; then return 0;
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else return 1; fi
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}
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is_valid_gain() {
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if is_number "$1"; then return 0;
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elif [ "$1" = "max" ]; then return 0;
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elif [ "$1" = "agc" ]; then return 0;
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else return 1; fi
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}
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is_not_empty() {
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if [ -z "$1" ]; then return 1; else return 0; fi
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}
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is_port_number() {
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if is_unsigned_int "$1"; then
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if [ "$1" -eq 0 ]; then return 0; fi
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if [ "$1" -lt 1024 ]; then return 1; fi
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if [ "$1" -gt 65535 ]; then return 1; fi
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return 0
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else
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return 1
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fi
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}
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db_input high $NAME/auto-start || true
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db_go || true; db_get $NAME/auto-start; if [ "$RET" = "true" ]; then
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# all of these are only relevant if the init script is enabled
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db_input_verify low $NAME/run-as-user is_not_empty || true
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db_input_verify low $NAME/log-file is_not_empty || true
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db_input medium $NAME/rtlsdr-device || true
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db_go || true; db_get $NAME/rtlsdr-device; if [ "x$RET" != "xnone" ]; then
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# only if a real device was chosen:
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db_input_verify medium $NAME/rtlsdr-gain is_valid_gain || true
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db_input_verify medium $NAME/rtlsdr-ppm is_signed_int || true
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db_input low $NAME/rtlsdr-oversample || true
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fi
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db_input low $NAME/decode-fix-crc || true
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db_input low $NAME/decode-aggressive || true
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db_input_verify medium $NAME/decode-max-range is_number || true
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db_input_verify medium $NAME/decode-lat is_number_or_empty || true
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db_go || true; db_get $NAME/decode-lat; if [ -n "$RET" ]; then
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# only if latitude was given:
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db_input_verify medium $NAME/decode-lon is_number_or_empty || true
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fi
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db_input_verify medium $NAME/net-http-port is_port_number || true
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db_input_verify low $NAME/net-ri-port is_port_number || true
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db_input_verify low $NAME/net-ro-port is_port_number || true
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db_input_verify low $NAME/net-bi-port is_port_number || true
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db_input_verify low $NAME/net-bo-port is_port_number || true
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db_input_verify low $NAME/net-sbs-port is_port_number || true
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db_input_verify low $NAME/net-fatsv-port is_port_number || true
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db_input_verify low $NAME/net-heartbeat is_unsigned_int || true
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db_input_verify low $NAME/net-out-size is_unsigned_int || true
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db_input_verify low $NAME/net-out-interval is_unsigned_int || true
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db_input_verify low $NAME/net-buffer is_unsigned_int || true
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db_input_verify medium $NAME/net-bind-address is_ipaddrish_or_empty || true
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db_input_verify low $NAME/stats-interval is_unsigned_int || true
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db_input_verify low $NAME/json-interval is_positive_int || true
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db_input low $NAME/json-location-accuracy || true
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db_input low $NAME/json-dir || true
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db_input low $NAME/log-decoded-messages || true
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db_input low $NAME/extra-args || true
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db_go || True
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fi
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# Done.
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db_stop
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