188d43f98d
Changes:
* Move network interface configuration logic from bin/pattyd.c to
bin/if.c; implement a more robust state machine
* Move KISS TNC configuration code from bin/pattyd.c to bin/kiss.c
* Ensure configuration file name, line number, and erroneous part
of an expression are clearly indicated upon failure
Other changes:
* Improve bin/Makefile to rebuild objects when accompanying header
files change
* Refer to HEADERS_SUBDIR, not HEADER_SUBDIR, in Makefiles
134 lines
3.3 KiB
C
134 lines
3.3 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <errno.h>
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#include <patty/bin/if.h>
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enum mode {
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MODE_NONE,
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MODE_IFNAME,
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MODE_IFOPTS,
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MODE_IFADDR,
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MODE_KISS,
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MODE_BAUD,
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MODE_FLOW
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};
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static int eprintf(patty_bin_if_data *data, const char *format, ...) {
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int ret;
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va_list args;
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va_start(args, format);
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ret = vsnprintf(data->err, sizeof(data->err)-1, format, args);
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va_end(args);
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return ret;
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}
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int patty_bin_if_config(patty_bin_if_data *data, int argc, char **argv) {
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enum mode mode = MODE_NONE;
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patty_kiss_tnc_info *info = &data->info;
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int i;
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for (i=0; i<argc; i++) {
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switch (mode) {
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case MODE_NONE:
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if (strcmp(argv[i], "if") != 0) {
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eprintf(data, "Unexpected start of expression '%s'",
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argv[i]);
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goto error_invalid;
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} else {
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mode = MODE_IFNAME;
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}
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break;
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case MODE_IFNAME:
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data->name = argv[i];
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mode = MODE_IFOPTS;
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break;
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case MODE_IFOPTS:
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if (strcmp(argv[i], "ax25") == 0) {
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mode = MODE_IFADDR;
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} else if (strcmp(argv[i], "kiss") == 0) {
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mode = MODE_KISS;
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} else if (strcmp(argv[i], "baud") == 0) {
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mode = MODE_BAUD;
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} else if (strcmp(argv[i], "flow") == 0) {
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mode = MODE_FLOW;
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} else {
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eprintf(data, "Invalid parameter '%s'", argv[i]);
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goto error_invalid;
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}
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break;
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case MODE_IFADDR:
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if (patty_ax25_pton(argv[i], &data->addr) < 0) {
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eprintf(data, "Invalid AX.25 address '%s': %s",
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argv[i], strerror(errno));
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goto error_invalid;
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}
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mode = MODE_IFOPTS;
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break;
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case MODE_KISS:
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data->type = PATTY_AX25_IF_KISS_TNC;
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info->flags |= PATTY_KISS_TNC_DEVICE;
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info->device = argv[i];
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mode = MODE_IFOPTS;
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break;
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case MODE_BAUD:
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if (!(argv[i][0] >= '0' && argv[i][0] <= '9')) {
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eprintf(data, "Invalid baud rate '%s'", argv[i]);
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goto error_invalid;
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}
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info->flags |= PATTY_KISS_TNC_BAUD;
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info->baud = atoi(argv[i]);
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mode = MODE_IFOPTS;
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break;
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case MODE_FLOW:
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if (strcmp(argv[i], "crtscts") == 0) {
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info->flags |= PATTY_KISS_TNC_FLOW;
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info->flow = PATTY_KISS_TNC_FLOW_CRTSCTS;
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} else if (strcmp(argv[i], "xonxoff") == 0) {
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info->flags |= PATTY_KISS_TNC_FLOW;
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info->flow = PATTY_KISS_TNC_FLOW_XONXOFF;
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} else {
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eprintf(data, "Invalid flow control '%s'", argv[i]);
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goto error_invalid;
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}
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mode = MODE_IFOPTS;
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break;
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}
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}
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return 0;
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error_invalid:
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return -1;
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}
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