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Recognize channel number at start of command line. More error checking.

This commit is contained in:
wb2osz 2018-01-01 20:08:59 -05:00
parent 9cd305950f
commit 6ffef6ed52
1 changed files with 117 additions and 78 deletions
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195
kissutil.c
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@ -34,8 +34,6 @@
* Default is to connect to localhost:8001.
* See the "usage" functions at the bottom for details.
*
* FIXME: This is a rough prototype that needs more work.
*
*---------------------------------------------------------------*/
#include "direwolf.h" // Sets _WIN32_WINNT for XP API level needed by ws2tcpip.h
@ -49,6 +47,8 @@
#include <stdlib.h>
#include <sys/errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#endif
@ -58,17 +58,17 @@
#include <ctype.h>
#include <string.h>
#include <getopt.h>
#include <sys/types.h>
#include <dirent.h>
#include <sys/stat.h>
//#include "ax25_pad.h"
#include "ax25_pad.h"
#include "textcolor.h"
#include "serial_port.h"
#include "kiss_frame.h"
#include "sock.h"
#include "dtime_now.h"
#include "audio.h" // for DEFAULT_TXDELAY, etc.
#include "dtime_now.h"
// TODO: define in one place, use everywhere.
@ -90,16 +90,11 @@ static THREAD_F tnc_listen_serial (void *arg);
static void send_to_kiss_tnc (int chan, int cmd, char *data, int dlen);
static void hex_dump (unsigned char *p, int len);
// Why didn't I use send/recv for Linux?
#if __WIN32__
// Formerly used write/read on Linux, for some forgotten reason,
// but making them the same seems to make more sense.
#define SOCK_SEND(s,data,size) send(s,data,size,0)
#define SOCK_RECV(s,data,size) recv(s,data,size,0)
#else
#define SOCK_SEND(s,data,size) write(s,data,size)
#define SOCK_RECV(s,data,size) read(s,data,size)
#endif
static void usage(void);
static void usage2(void);
@ -273,8 +268,20 @@ int main (int argc, char *argv[])
* If receive queue directory was specified, make sure that it exists.
*/
if (strlen(receive_output) > 0) {
struct stat s;
// TODO
if (stat(receive_output, &s) == 0) {
if ( ! S_ISDIR(s.st_mode)) {
text_color_set(DW_COLOR_ERROR);
dw_printf ("Receive queue location, %s, is not a directory.\n", receive_output);
exit (EXIT_FAILURE);
}
}
else {
text_color_set(DW_COLOR_ERROR);
dw_printf ("Receive queue location, %s, does not exist.\n", receive_output);
exit (EXIT_FAILURE);
}
}
/* If port begins with digit, consider it to be TCP. */
@ -418,79 +425,104 @@ static int parse_number (char *str, int de_fault)
static void process_input (char *stuff)
{
char *p;
int chan = 0;
char *p;
int chan = 0;
/*
* Remove any end of line character(s).
*/
trim (stuff);
trim (stuff);
/*
* Optional prefix, like "[9]" to specify channel. TODO FIXME
* Optional prefix, like "[9]" or "[99]" to specify channel.
*/
p = stuff;
p = stuff;
while (isspace(*p)) p++;
if (*p == '[') {
p++;
if (p[1] == ']') {
chan = atoi(p);
p += 2;
}
else if (p[2] == ']') {
chan = atoi(p);
p += 3;
}
else {
text_color_set(DW_COLOR_ERROR);
dw_printf ("ERROR! One or two digit channel number and ] was expected after [ at beginning of line.\n");
usage2();
return;
}
if (chan < 0 || chan > 15) {
text_color_set(DW_COLOR_ERROR);
dw_printf ("ERROR! KISS channel number must be in range of 0 thru 15.\n");
usage2();
return;
}
while (isspace(*p)) p++;
}
/*
* If it starts with upper case letter or digit, assume it is an AX.25 frame in monitor format.
* Lower case is a command (e.g. Persistence or set Hardware).
* Anything else, print explanation of what is expected.
*/
if (isupper(*p) || isdigit(*p)) {
if (isupper(*p) || isdigit(*p)) {
// Parse the "TNC2 monitor format" and convert to AX.25 frame.
// Parse the "TNC2 monitor format" and convert to AX.25 frame.
unsigned char frame_data[AX25_MAX_PACKET_LEN];
packet_t pp = ax25_from_text (p, 1);
if (pp != NULL) {
int frame_len = ax25_pack (pp, frame_data);
send_to_kiss_tnc (chan, KISS_CMD_DATA_FRAME, (char*)frame_data, frame_len);
ax25_delete (pp);
}
else {
text_color_set(DW_COLOR_ERROR);
dw_printf ("ERROR! Could not convert to AX.25 frame: %s\n", p);
}
}
else if (islower(*p)) {
char value;
unsigned char frame_data[AX25_MAX_PACKET_LEN];
packet_t pp = ax25_from_text (p, 1);
if (pp != NULL) {
int frame_len = ax25_pack (pp, frame_data);
send_to_kiss_tnc (chan, KISS_CMD_DATA_FRAME, (char*)frame_data, frame_len);
ax25_delete (pp);
}
else {
text_color_set(DW_COLOR_ERROR);
dw_printf ("ERROR! Could not convert to AX.25 frame: %s\n", p);
}
}
else if (islower(*p)) {
char value;
switch (*p) {
case 'd': // txDelay, 10ms units
value = parse_number(p+1, DEFAULT_TXDELAY);
send_to_kiss_tnc (chan, KISS_CMD_TXDELAY, &value, 1);
break;
case 'p': // Persistence
value = parse_number(p+1, DEFAULT_PERSIST);
send_to_kiss_tnc (chan, KISS_CMD_PERSISTENCE, &value, 1);
break;
case 's': // Slot time, 10ms units
value = parse_number(p+1, DEFAULT_SLOTTIME);
send_to_kiss_tnc (chan, KISS_CMD_SLOTTIME, &value, 1);
break;
case 't': // txTail, 10ms units
value = parse_number(p+1, DEFAULT_TXTAIL);
send_to_kiss_tnc (chan, KISS_CMD_TXTAIL, &value, 1);
break;
case 'f': // Full duplex
value = parse_number(p+1, 0);
send_to_kiss_tnc (chan, KISS_CMD_FULLDUPLEX, &value, 1);
break;
case 'h': // set Hardware
p++;
while (*p != '\0' && isspace(*p)) { p++; }
send_to_kiss_tnc (chan, KISS_CMD_SET_HARDWARE, p, strlen(p));
break;
default:
text_color_set(DW_COLOR_ERROR);
dw_printf ("Invalid command. Must be one of d p s t f h.\n");
usage2 ();
break;
}
}
else {
switch (*p) {
case 'd': // txDelay, 10ms units
value = parse_number(p+1, DEFAULT_TXDELAY);
send_to_kiss_tnc (chan, KISS_CMD_TXDELAY, &value, 1);
break;
case 'p': // Persistence
value = parse_number(p+1, DEFAULT_PERSIST);
send_to_kiss_tnc (chan, KISS_CMD_PERSISTENCE, &value, 1);
break;
case 's': // Slot time, 10ms units
value = parse_number(p+1, DEFAULT_SLOTTIME);
send_to_kiss_tnc (chan, KISS_CMD_SLOTTIME, &value, 1);
break;
case 't': // txTail, 10ms units
value = parse_number(p+1, DEFAULT_TXTAIL);
send_to_kiss_tnc (chan, KISS_CMD_TXTAIL, &value, 1);
break;
case 'f': // Full duplex
value = parse_number(p+1, 0);
send_to_kiss_tnc (chan, KISS_CMD_FULLDUPLEX, &value, 1);
break;
case 'h': // set Hardware
p++;
while (*p != '\0' && isspace(*p)) { p++; }
send_to_kiss_tnc (chan, KISS_CMD_SET_HARDWARE, p, strlen(p));
break;
default:
text_color_set(DW_COLOR_ERROR);
dw_printf ("Invalid command. Must be one of d p s t f h.\n");
usage2 ();
}
break;
}
}
else {
usage2 ();
}
} /* end process_input */
@ -548,15 +580,19 @@ static void send_to_kiss_tnc (int chan, int cmd, char *data, int dlen)
hex_dump (kissed, klen);
}
// FIXME: Should check for non -1 server_sock or serial_fd.
// Might need to delay when not using interactive input.
if (using_tcp) {
int rc = SOCK_SEND(server_sock, (char*)kissed, klen);
(void)rc;
if (rc != klen) {
text_color_set(DW_COLOR_ERROR);
dw_printf ("ERROR writing KISS frame to socket.\n");
}
}
else {
serial_port_write (serial_fd, (char*)kissed, klen);
int rc = serial_port_write (serial_fd, (char*)kissed, klen);
if (rc != klen) {
text_color_set(DW_COLOR_ERROR);
dw_printf ("ERROR writing KISS frame to serial port.\n");
}
}
} /* end send_to_kiss_tnc */
@ -578,8 +614,6 @@ static void send_to_kiss_tnc (int chan, int cmd, char *data, int dlen)
*
*--------------------------------------------------------------------*/
//#define MAX_HOSTS 30
static THREAD_F tnc_listen_net (void *arg)
{
int err;
@ -673,6 +707,11 @@ static THREAD_F tnc_listen_serial (void *arg)
if (serial_fd == MYFDERROR) {
text_color_set(DW_COLOR_ERROR);
dw_printf("Unable to connect to KISS TNC serial port %s.\n", port);
#if __WIN32__
#else
// More detail such as "permission denied" or "no such device"
dw_printf("%s\n", strerror(errno));
#endif
exit (EXIT_FAILURE);
}
@ -902,7 +941,7 @@ static void usage2 (void)
dw_printf (" s Slot time, 10ms units s 10\n");
dw_printf (" t txTail, 10ms units t 5\n");
dw_printf (" f Full duplex f 0\n");
dw_printf (" h set Hardware h T.B.D.\n");
dw_printf (" h set Hardware h TNC:\n");
dw_printf ("\n");
dw_printf (" Lines may be preceded by the form \"[9]\" to indicate a\n");
dw_printf (" channel other than the default 0.\n");