mirror of https://github.com/wb2osz/direwolf.git
decode_aprs can now process KISS or AX.25 frames as sequences of hexadecimal numbers.
This commit is contained in:
WB2OSZ
parent
3ce981c196
commit
be7ee8211e
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@ -14,6 +14,8 @@ This is a snapshot of ongoing development towards version of 1.5. Some features
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- New document ***Bluetooth-KISS-TNC.pdf*** explaining how to use KISS over Bluetooth.
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- decode_aprs utility can now accept KISS frames and AX.25 frames as series of two digit hexadecimal numbers.
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### Bugs Fixed: ###
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- Little spelling errors in messages ????
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@ -2,6 +2,9 @@
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# Makefile for Linux version of Dire Wolf.
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#
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APPS := direwolf decode_aprs text2tt tt2text ll2utm utm2ll aclients atest log2gpx gen_packets ttcalc
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all : $(APPS) direwolf.desktop direwolf.conf
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@ -259,6 +262,16 @@ endif
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CFLAGS += -DUSE_ALSA
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LDFLAGS += -lasound
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ifeq ($(wildcard /usr/include/pthread.h),)
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$(error /usr/include/pthread.h does not exist. Install it with "sudo apt-get install libc6-dev" or "sudo yum install libc6-dev" )
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endif
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ifneq ($(USE_ALSA),)
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ifeq ($(wildcard /usr/include/alsa/asoundlib.h),)
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$(error /usr/include/alsa/asoundlib.h does not exist. Install it with "sudo apt-get install libasound2-dev" or "sudo yum install libasound2-dev" )
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endif
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endif
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# Enable GPS if header file is present.
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# Finding libgps.so* is more difficult because it
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@ -355,7 +368,9 @@ tocalls-symbols :
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# Separate application to decode raw data.
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decode_aprs : decode_aprs.c dwgpsnmea.o dwgps.o dwgpsd.o serial_port.o symbols.o ax25_pad.o textcolor.o fcs_calc.o latlong.o log.o telemetry.o tt_text.o misc.a
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# First two use .c rather than .o because they depend on DECAMAIN definition.
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decode_aprs : decode_aprs.c kiss_frame.c dwgpsnmea.o dwgps.o dwgpsd.o serial_port.o symbols.o ax25_pad.o textcolor.o fcs_calc.o latlong.o log.o telemetry.o tt_text.o misc.a
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$(CC) $(CFLAGS) -DDECAMAIN -o $@ $^ $(LDFLAGS)
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@ -638,7 +653,8 @@ install-conf : direwolf.conf
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cp -n telemetry-toolkit/telem-*.conf ~
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ifneq ($(wildcard $(HOME)/Desktop),)
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@echo " "
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@echo "This will add a desktop icon on some systems:"
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@echo "This will add a desktop icon on some systems."
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@echo "This is known to work on Raspberry Pi but might not be compatible with other desktops."
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@echo " "
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@echo " make install-rpi"
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@echo " "
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@ -430,7 +430,9 @@ install-conf : direwolf.conf
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# Separate application to decode raw data.
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decode_aprs : decode_aprs.c dwgpsnmea.o dwgps.o dwgpsd.o serial_port.o symbols.o ax25_pad.o textcolor.o fcs_calc.o latlong.o log.o telemetry.o tt_text.o
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# First two use .c rather than .o because they depend on DECAMAIN definition.
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decode_aprs : decode_aprs.c kiss_frame.c dwgpsnmea.o dwgps.o dwgpsd.o serial_port.o symbols.o ax25_pad.o textcolor.o fcs_calc.o latlong.o log.o telemetry.o tt_text.o
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$(CC) $(CFLAGS) -DDECAMAIN -o $@ $^ -lm
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# Convert between text and touch tone representation.
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@ -159,7 +159,9 @@ tocalls-symbols :
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# Separate application to decode raw data.
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decode_aprs : decode_aprs.c dwgpsnmea.o dwgps.o serial_port.o symbols.o ax25_pad.o textcolor.o fcs_calc.o latlong.o log.o telemetry.o tt_text.c regex.a misc.a geotranz.a
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# First two use .c rather than .o because they depend on DECAMAIN definition.
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decode_aprs : decode_aprs.c kiss_frame.c dwgpsnmea.o dwgps.o serial_port.o symbols.o ax25_pad.o textcolor.o fcs_calc.o latlong.o log.o telemetry.o tt_text.o regex.a misc.a geotranz.a
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$(CC) $(CFLAGS) -DDECAMAIN -o decode_aprs $^
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50
ax25_pad.c
50
ax25_pad.c
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@ -760,12 +760,18 @@ int ax25_parse_addr (int position, char *in_addr, int strict, char *out_addr, in
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maxlen = strict ? 6 : (AX25_MAX_ADDR_LEN-1);
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p = in_addr;
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i = 0;
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for (p = in_addr; isalnum(*p); p++) {
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for (p = in_addr; *p != '\0' && *p != '-'; p++) {
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if (i >= maxlen) {
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text_color_set(DW_COLOR_ERROR);
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dw_printf ("%sAddress is too long. \"%s\" has more than %d characters.\n", position_name[position], in_addr, maxlen);
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return 0;
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}
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if ( ! isalnum(*p)) {
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text_color_set(DW_COLOR_ERROR);
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dw_printf ("%sAddress, \"%s\" contains character other than letter or digit in character position %d.\n", position_name[position], in_addr, (int)(long)(p-in_addr)+1);
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return 0;
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}
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out_addr[i++] = *p;
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out_addr[i] = '\0';
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if (strict && islower(*p)) {
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@ -1257,13 +1263,22 @@ void ax25_get_addr_with_ssid (packet_t this_p, int n, char *station)
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return;
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}
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memset (station, 0, 7);
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for (i=0; i<6; i++) {
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unsigned char ch;
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// At one time this would stop at the first space, on the assumption we would have only trailing spaces.
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// Then there was a forum discussion where someone encountered the address " WIDE2" with a leading space.
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// In that case, we would have returned a zero length string here.
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// Now we return exactly what is in the address field and trim trailing spaces.
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// This will provide better information for troubleshooting.
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ch = (this_p->frame_data[n*7+i] >> 1) & 0x7f;
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if (ch <= ' ') break;
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station[i] = ch;
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for (i=0; i<6; i++) {
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station[i] = (this_p->frame_data[n*7+i] >> 1) & 0x7f;
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}
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station[6] = '\0';
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for (i=5; i>=0; i--) {
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if (station[i] == ' ')
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station[i] = '\0';
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else
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break;
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}
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ssid = ax25_get_ssid (this_p, n);
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@ -1322,13 +1337,22 @@ void ax25_get_addr_no_ssid (packet_t this_p, int n, char *station)
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return;
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}
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memset (station, 0, 7);
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for (i=0; i<6; i++) {
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unsigned char ch;
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// At one time this would stop at the first space, on the assumption we would have only trailing spaces.
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// Then there was a forum discussion where someone encountered the address " WIDE2" with a leading space.
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// In that case, we would have returned a zero length string here.
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// Now we return exactly what is in the address field and trim trailing spaces.
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// This will provide better information for troubleshooting.
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ch = (this_p->frame_data[n*7+i] >> 1) & 0x7f;
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if (ch <= ' ') break;
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station[i] = ch;
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for (i=0; i<6; i++) {
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station[i] = (this_p->frame_data[n*7+i] >> 1) & 0x7f;
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}
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station[6] = '\0';
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for (i=5; i>=0; i--) {
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if (station[i] == ' ')
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station[i] = '\0';
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else
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break;
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}
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} /* end ax25_get_addr_no_ssid */
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204
decode_aprs.c
204
decode_aprs.c
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@ -1,7 +1,7 @@
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//
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// This file is part of Dire Wolf, an amateur radio packet TNC.
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//
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// Copyright (C) 2011, 2012, 2013, 2014, 2015 John Langner, WB2OSZ
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// Copyright (C) 2011, 2012, 2013, 2014, 2015, 2017 John Langner, WB2OSZ
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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@ -4583,6 +4583,14 @@ static void process_comment (decode_aprs_t *A, char *pstart, int clen)
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*
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* WB2OSZ-1>APN383,qAR,N1EDU-2:!4237.14NS07120.83W#PHG7130Chelmsford, MA
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*
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* New for 1.5:
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*
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* Also allow hexadecimal bytes for raw AX.25 or KISS. e.g.
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*
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* 00 82 a0 ae ae 62 60 e0 82 96 68 84 40 40 60 9c 68 b0 ae 86 40 e0 40 ae 92 88 8a 64 63 03 f0 3e 45 4d 36 34 6e 65 2f 23 20 45 63 68 6f 6c 69 6e 6b 20 31 34 35 2e 33 31 30 2f 31 30 30 68 7a 20 54 6f 6e 65
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*
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* If it begins with 00 or C0 (which would be impossible for AX.25 address) process as KISS.
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* Also print these formats.
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*
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* Outputs: stdout
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*
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@ -4614,11 +4622,16 @@ static void process_comment (decode_aprs_t *A, char *pstart, int clen)
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* TODO: To make it more useful,
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* - Remove any leading timestamp.
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* - Remove any "qA*" and following from the path.
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* - Handle non-APRS frames properly.
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*
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*------------------------------------------------------------------*/
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#if DECAMAIN
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#include "kiss_frame.h"
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/* Stub for stand-alone decoder. */
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void nmea_send_waypoint (char *wname_in, double dlat, double dlong, char symtab, char symbol,
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@ -4627,11 +4640,48 @@ void nmea_send_waypoint (char *wname_in, double dlat, double dlong, char symtab,
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return;
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}
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// TODO: hex_dump is currently in server.c and we don't want to drag that in.
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// Someday put it in a more reasonable place, with other general utilities, and remove the private copy here.
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static void hex_dump (unsigned char *p, int len)
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{
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int n, i, offset;
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offset = 0;
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while (len > 0) {
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n = len < 16 ? len : 16;
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dw_printf (" %03x: ", offset);
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for (i=0; i<n; i++) {
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dw_printf (" %02x", p[i]);
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}
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for (i=n; i<16; i++) {
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dw_printf (" ");
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}
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dw_printf (" ");
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for (i=0; i<n; i++) {
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dw_printf ("%c", isprint(p[i]) ? p[i] : '.');
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}
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dw_printf ("\n");
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p += 16;
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offset += 16;
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len -= 16;
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}
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}
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// Do we have two hexadecimal digits followed by whitespace or end of line?
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#define ISHEX2(x) (isxdigit(x[0]) && isxdigit(x[1]) && (x[2] == '\0' || isspace(x[2])))
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#define MAXLINE 9000
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#define MAXBYTES 3000
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int main (int argc, char *argv[])
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{
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char stuff[300];
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char stuff[MAXLINE];
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unsigned char bytes[MAXBYTES];
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int num_bytes;
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char *p;
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packet_t pp;
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@ -4687,36 +4737,148 @@ int main (int argc, char *argv[])
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text_color_set(DW_COLOR_REC);
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dw_printf("\n%s\n", stuff);
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pp = ax25_from_text(stuff, 1);
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if (pp != NULL)
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{
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// Do we have monitor format, KISS, or AX.25 frame?
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p = stuff;
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while (isspace(*p)) p++;
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if (ISHEX2(p)) {
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// Collect a bunch of hexadecimal numbers.
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num_bytes = 0;
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while (ISHEX2(p) && num_bytes < MAXBYTES) {
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bytes[num_bytes++] = strtoul(p, NULL, 16);
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p += 2;
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while (isspace(*p)) p++;
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}
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if (num_bytes == 0 || *p != '\0') {
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text_color_set(DW_COLOR_ERROR);
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dw_printf("Parse error around column %d.\n", (int)(long)(p - stuff) + 1);
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dw_printf("Was expecting only space separated 2 digit hexadecimal numbers.\n\n");
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continue; // next line
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}
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// If we have 0xC0 at start, remove it and expect same at end.
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if (bytes[0] == FEND) {
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if (bytes[1] != 0) {
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text_color_set(DW_COLOR_ERROR);
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dw_printf("Was expecting to find 00 after the initial C0.\n");
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continue;
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}
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if (bytes[num_bytes-1] == FEND) {
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text_color_set(DW_COLOR_INFO);
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dw_printf("Removing KISS FEND characters at beginning and end.\n");
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int n;
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for (n = 0; n < num_bytes-1; n++) {
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bytes[n] = bytes[n+1];
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}
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num_bytes -= 2;
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}
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else {
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text_color_set(DW_COLOR_INFO);
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dw_printf("Removing KISS FEND character at beginning. Was expecting another at end.\n");
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int n;
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for (n = 0; n < num_bytes-1; n++) {
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bytes[n] = bytes[n+1];
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}
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num_bytes -= 1;
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}
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}
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if (bytes[0] == 0) {
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// Treat as KISS. Undo any KISS encoding.
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unsigned char kiss_frame[MAXBYTES];
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int kiss_len = num_bytes;
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memcpy (kiss_frame, bytes, num_bytes);
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text_color_set(DW_COLOR_DEBUG);
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dw_printf ("--- KISS frame ---\n");
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hex_dump (kiss_frame, kiss_len);
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// Put FEND at end to keep kiss_unwrap happy.
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// Having one at the begining is optional.
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kiss_frame[kiss_len++] = FEND;
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// In the more general case, we would need to include
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// the command byte because it could be escaped.
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// Here we know it is 0, so we take a short cut and
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// remove it before, rather than after, the conversion.
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num_bytes = kiss_unwrap (kiss_frame + 1, kiss_len - 1, bytes);
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}
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// Treat as AX.25.
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alevel_t alevel;
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memset (&alevel, 0, sizeof(alevel));
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pp = ax25_from_frame(bytes, num_bytes, alevel);
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if (pp != NULL) {
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char addrs[120];
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unsigned char *pinfo;
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int info_len;
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decode_aprs_t A;
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// log directory option someday?
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decode_aprs (&A, pp, 0);
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text_color_set(DW_COLOR_DEBUG);
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dw_printf ("--- AX.25 frame ---\n");
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ax25_hex_dump (pp);
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dw_printf ("-------------------\n");
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//Print it all out in human readable format.
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ax25_format_addrs (pp, addrs);
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text_color_set(DW_COLOR_DECODED);
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dw_printf ("%s:", addrs);
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decode_aprs_print (&A);
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info_len = ax25_get_info (pp, &pinfo);
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ax25_safe_print ((char *)pinfo, info_len, 1); // Display non-ASCII to hexadecimal.
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dw_printf ("\n");
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/*
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* Perform validity check on each address.
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* This should print an error message if any issues.
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*/
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(void)ax25_check_addresses(pp);
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decode_aprs (&A, pp, 0); // Extract information into structure.
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// Send to log file?
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decode_aprs_print (&A); // Now print it in human readable format.
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// if (logdir != NULL && *logdir != '\0') {
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// log_write (&A, pp, logdir);
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// }
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(void)ax25_check_addresses(pp); // Errors for invalid addresses.
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ax25_delete (pp);
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}
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else
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{
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else {
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text_color_set(DW_COLOR_ERROR);
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dw_printf("\n%s\n", "ERROR - Could not parse input!\n");
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dw_printf("Could not construct AX.25 frame from bytes supplied!\n\n");
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}
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}
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else {
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// Normal monitoring format.
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pp = ax25_from_text(stuff, 1);
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if (pp != NULL) {
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decode_aprs_t A;
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decode_aprs (&A, pp, 0); // Extract information into structure.
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decode_aprs_print (&A); // Now print it in human readable format.
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(void)ax25_check_addresses(pp); // Errors for invalid addresses.
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// Future? Add -d option to include hex dump and maybe KISS?
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ax25_delete (pp);
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}
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else {
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text_color_set(DW_COLOR_ERROR);
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dw_printf("ERROR - Could not parse monitoring format input!\n\n");
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}
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}
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}
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}
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Binary file not shown.
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@ -101,7 +101,9 @@ void text_color_set (dw_color_t c)
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#else
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#ifndef DECAMAIN
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static void kiss_process_msg (unsigned char *kiss_msg, int kiss_len, int debug);
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#endif
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#endif
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@ -212,7 +214,7 @@ int kiss_encapsulate (unsigned char *in, int ilen, unsigned char *out)
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*
|
||||
*-----------------------------------------------------------------*/
|
||||
|
||||
static int kiss_unwrap (unsigned char *in, int ilen, unsigned char *out)
|
||||
int kiss_unwrap (unsigned char *in, int ilen, unsigned char *out)
|
||||
{
|
||||
int olen;
|
||||
int j;
|
||||
|
|
@ -278,6 +280,8 @@ static int kiss_unwrap (unsigned char *in, int ilen, unsigned char *out)
|
|||
} /* end kiss_unwrap */
|
||||
|
||||
|
||||
#ifndef DECAMAIN
|
||||
|
||||
#ifndef KISSTEST
|
||||
|
||||
|
||||
|
|
@ -687,6 +691,7 @@ void kiss_debug_print (fromto_t fromto, char *special, unsigned char *pmsg, int
|
|||
|
||||
#endif
|
||||
|
||||
#endif /* DECAMAIN */
|
||||
|
||||
/* Quick unit test for encapsulate & unwrap */
|
||||
|
||||
|
|
@ -730,7 +735,7 @@ int main ()
|
|||
exit (EXIT_SUCCESS);
|
||||
}
|
||||
|
||||
#endif
|
||||
#endif /* KISSTEST */
|
||||
|
||||
#endif /* WALK96 */
|
||||
|
||||
|
|
|
|||
|
|
@ -45,6 +45,8 @@ void kiss_frame_init (struct audio_s *pa);
|
|||
|
||||
int kiss_encapsulate (unsigned char *in, int ilen, unsigned char *out);
|
||||
|
||||
int kiss_unwrap (unsigned char *in, int ilen, unsigned char *out);
|
||||
|
||||
void kiss_rec_byte (kiss_frame_t *kf, unsigned char ch, int debug, int client, void (*sendfun)(int,unsigned char*,int,int));
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -9,7 +9,9 @@ decode_aprs \- Convert APRS raw data to human readable form.
|
|||
[ \fItext-file\fR ]
|
||||
.RS
|
||||
.P
|
||||
\fItext-file\fR should contain AX.25 packets in the standard monitoring format.
|
||||
\fItext-file\fR should contain AX.25 packets in the standard monitoring format or
|
||||
as a series two digit hexadecimal numbers.
|
||||
If the first number is 00 or c0, it will be treated as a KISS frame.
|
||||
If no file specified, data will be read from stdin.
|
||||
.P
|
||||
.RE
|
||||
|
|
@ -43,12 +45,14 @@ Pipe it into decode_aprs to find out.
|
|||
http://www.findu.com/cgi-bin/errors.cgi has a never-ending collection of packets
|
||||
with errors. Sometimes it's not obvious what is wrong with them.
|
||||
Dire Wolf will usually tell you what is wrong. First,
|
||||
cut-n-paste the bad packets into a text file. Here a couple examples:
|
||||
cut-n-paste the bad packets into a text file. Here a few examples:
|
||||
.P
|
||||
.RS
|
||||
n2cma>APRS,TCPIP*,qAC,SEVENTH:@212127z43.2333n/77.1w_338/002g001t025P000h65b10208.wview_5_19_0
|
||||
.P
|
||||
K0YTH-10>APNU3B,NULL,qAR,K0DMF-10:!4601.5NS09255.52W#PHG6360/W2,MNn 444.575
|
||||
.P
|
||||
00 82 a0 ae ae 62 60 e0 82 96 68 84 40 40 60 9c 68 b0 ae 86 40 e0 40 ae 92 88 8a 64 63 03 f0 3e 45 4d 36 34 6e 65 2f 23 20 45 63 68 6f 6c 69 6e 6b 20 31 34 35 2e 33 31 30 2f 31 30 30 68 7a 20 54 6f 6e 65
|
||||
.RE
|
||||
.P
|
||||
If you simply fed this into decode_aprs, it would complain about the
|
||||
|
|
@ -67,7 +71,7 @@ Address has lower case letters. "n2cma" must be all upper case.
|
|||
.P
|
||||
After changing the source address to upper case, there are other issues. Identifying them is left as an exercise for the reader.
|
||||
.P
|
||||
And in the second example,
|
||||
In the second example,
|
||||
.P
|
||||
.RS
|
||||
.PD 0
|
||||
|
|
@ -77,6 +81,17 @@ Invalid character in longitude. Found '9' when expecting 0 or 1 for hundreds of
|
|||
.PD
|
||||
.RE
|
||||
|
||||
.P
|
||||
In the third example,
|
||||
.P
|
||||
.RS
|
||||
.PD 0
|
||||
Warning: Lower case letter in Maidenhead locator. Specification requires upper case.
|
||||
.P
|
||||
Digi2 Address, " WIDE2-1" contains character other than letter or digit in character position 1.
|
||||
.PD
|
||||
.RE
|
||||
|
||||
|
||||
|
||||
.SH SEE ALSO
|
||||
|
|
|
|||
Loading…
Reference in New Issue