[hmcfgusb] / hmland.c

/* HM-CFG-LAN emulation for HM-CFG-USB
 *
 * Copyright (c) 2013 Michael Gernoth <michael@gernoth.net>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdint.h>
#include <string.h>
#include <strings.h>
#include <poll.h>
#include <signal.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <libusb-1.0/libusb.h>

#include "hexdump.h"
#include "hmcfgusb.h"

#define PID_FILE "/var/run/hmland.pid"

extern char *optarg;

static int impersonate_hmlanif = 0;
static int debug = 0;
static int verbose = 0;

#define	FLAG_LENGTH_BYTE	(1<<0)
#define	FLAG_FORMAT_HEX		(1<<1)
#define	FLAG_COMMA_BEFORE	(1<<2)
#define	FLAG_COMMA_AFTER	(1<<3)
#define	FLAG_NL			(1<<4)
#define	FLAG_IGNORE_COMMAS	(1<<5)

#define CHECK_SPACE(x)		if ((*outpos + x) > outend) { fprintf(stderr, "Not enough space!\n"); return 0; }
#define CHECK_AVAIL(x)		if ((*inpos + x) > inend) { fprintf(stderr, "Not enough input available!\n"); return 0; }

static int format_part_out(uint8_t **inpos, int inlen, uint8_t **outpos, int outlen, int len, int flags)
{
	const uint8_t nibble[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
		'A', 'B', 'C', 'D', 'E', 'F'};
	uint8_t *buf_out = *outpos;
	uint8_t *outend = *outpos + outlen;
	uint8_t *inend = *inpos + inlen;
	int i;

	if (flags & FLAG_COMMA_BEFORE) {
		CHECK_SPACE(1);
		**outpos=',';
		*outpos += 1;
	}

	if (flags & FLAG_LENGTH_BYTE) {
		CHECK_AVAIL(1);
		len = **inpos;
		*inpos += 1;
	}

	if (flags & FLAG_FORMAT_HEX) {
		CHECK_AVAIL(len);
		CHECK_SPACE(len*2);
		for (i = 0; i < len; i++) {
			**outpos = nibble[((**inpos) & 0xf0) >> 4];
			*outpos += 1;
			**outpos = nibble[((**inpos) & 0xf)];
			*inpos += 1; *outpos += 1;
		}
	} else {
		CHECK_AVAIL(len);
		CHECK_SPACE(len);
		memcpy(*outpos, *inpos, len);
		*outpos += len;
		*inpos += len;
	}

	if (flags & FLAG_COMMA_AFTER) {
		CHECK_SPACE(1);
		**outpos=',';
		*outpos += 1;
	}

	if (flags & FLAG_NL) {
		CHECK_SPACE(2);
		**outpos='\r';
		*outpos += 1;
		**outpos='\n';
		*outpos += 1;
	}

	return *outpos - buf_out;
}

static uint8_t ascii_to_nibble(uint8_t a)
{
	uint8_t c = 0x00;

	if ((a >= '0') && (a <= '9')) {
		c = a - '0';
	} else if ((a >= 'A') && (a <= 'F')) {
		c = (a - 'A') + 10;
	} else if ((a >= 'a') && (a <= 'f')) {
		c = (a - 'a') + 10;
	}

	return c;
}

static int parse_part_in(uint8_t **inpos, int inlen, uint8_t **outpos, int outlen, int flags)
{
	uint8_t *buf_out = *outpos;
	uint8_t *outend = *outpos + outlen;
	uint8_t *inend = *inpos + inlen;

	if (flags & FLAG_LENGTH_BYTE) {
		int len = 0;
		uint8_t *ip;

		ip = *inpos;
		while(ip < inend) {
			if (*ip == ',') {
				ip++;
				if (!(flags & FLAG_IGNORE_COMMAS))
					break;

				continue;
			}
			len++;
			ip++;
		}
		CHECK_SPACE(1);
		**outpos = (len / 2);
		*outpos += 1;
	}

	while(*inpos < inend) {
		if (**inpos == ',') {
			*inpos += 1;
			if (!(flags & FLAG_IGNORE_COMMAS))
				break;

			continue;
		}

		CHECK_SPACE(1);
		CHECK_AVAIL(2);

		**outpos = ascii_to_nibble(**inpos) << 4;
		*inpos += 1;
		**outpos |= ascii_to_nibble(**inpos);
		*inpos += 1; *outpos += 1;
	}

	return *outpos - buf_out;
}

static int hmlan_format_out(uint8_t *buf, int buf_len, void *data)
{
	uint8_t out[1024];
	uint8_t *outpos;
	uint8_t *inpos;
	int fd = *((int*)data);
	int w;

	if (buf_len < 1)
		return 1;

	memset(out, 0, sizeof(out));
	outpos = out;
	inpos = buf;

	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, 0);
	switch(buf[0]) {
		case 'H':
			if (impersonate_hmlanif) {
				buf[5] = 'L';
				buf[6] = 'A';
				buf[7] = 'N';
			}
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 0, FLAG_LENGTH_BYTE);
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 0, FLAG_COMMA_BEFORE | FLAG_LENGTH_BYTE);
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 3, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 3, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 4, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE | FLAG_NL);

			break;
		case 'E':
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 3, FLAG_FORMAT_HEX);
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 4, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 0, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE | FLAG_LENGTH_BYTE | FLAG_NL);

			break;
		case 'R':
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 4, FLAG_FORMAT_HEX);
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 4, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 0, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE | FLAG_LENGTH_BYTE | FLAG_NL);

			break;
		case 'I':
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX);
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE);
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE | FLAG_NL);

			break;
		default:
			format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), buf_len-1, FLAG_FORMAT_HEX | FLAG_NL);
			hexdump(buf, buf_len, "Unknown> ");
			break;
	}
	if (verbose) {
		int i;

		printf("LAN < ");
		for (i = 0; i < outpos-out-2; i++)
			printf("%c", out[i]);
		printf("\n");
	}

	w = write(fd, out, outpos-out);
	if (w <= 0) {
		perror("write");
		return 0;
	}

	return 1;
}

static int hmlan_parse_in(int fd, void *data)
{
	struct hmcfgusb_dev *dev = data;
	uint8_t buf[1025];
	uint8_t out[0x40]; //FIXME!!!
	uint8_t *outpos;
	uint8_t *inpos;
	int i;
	int last;
	int r;

	memset(buf, 0, sizeof(buf));

	r = read(fd, buf, sizeof(buf)-1);
	if (r > 0) {
		uint8_t *inend = buf + r;

		inpos = buf;

		while (inpos < inend) {
			uint8_t *instart = inpos;

			if ((*inpos == '\r') || (*inpos == '\n')) {
				inpos++;
				continue;
			}
			
			outpos = out;

			last = inend - inpos;

			for (i = 0; i < last; i++) {
				if ((inpos[i] == '\r') || (inpos[i] == '\n')) {
					last = i;
					break;
				}
			}

			if (last == 0)
				continue;

			if (verbose) {
				printf("LAN > ");
				for (i = 0; i < last; i++)
					printf("%c", instart[i]);
				printf("\n");
			}

			memset(out, 0, sizeof(out));
			*outpos++ = *inpos++;

			switch(*instart) {
				case 'S':
					parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
					parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
					parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
					parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
					parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
					parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), FLAG_LENGTH_BYTE);
					break;
				case 'Y':
					parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
					parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
					parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), FLAG_LENGTH_BYTE);
					break;
				default:
					parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), FLAG_IGNORE_COMMAS);
					break;
			}

			hmcfgusb_send(dev, out, sizeof(out), 1);
		}
	} else if (r < 0) {
		perror("read");
		return r;
	} else {
		return 0;
	}

	return 1;
}

static int comm(int fd_in, int fd_out, int master_socket, int flags)
{
	struct hmcfgusb_dev *dev;
	uint8_t out[0x40]; //FIXME!!!
	int quit = 0;

	hmcfgusb_set_debug(debug);

	dev = hmcfgusb_init(hmlan_format_out, &fd_out);
	if (!dev) {
		fprintf(stderr, "Can't initialize HM-CFG-USB!\n");
		return 0;
	}

	if (!hmcfgusb_add_pfd(dev, fd_in, POLLIN)) {
		fprintf(stderr, "Can't add client to pollfd!\n");
		hmcfgusb_close(dev);
		return 0;
	}

	if (master_socket >= 0) {
		if (!hmcfgusb_add_pfd(dev, master_socket, POLLIN)) {
			fprintf(stderr, "Can't add master_socket to pollfd!\n");
			hmcfgusb_close(dev);
			return 0;
		}
	}

	memset(out, 0, sizeof(out));
	out[0] = 'K';
	hmcfgusb_send_null_frame(dev);
	hmcfgusb_send(dev, out, sizeof(out), 1);

	while(!quit) {
		int fd;

		fd = hmcfgusb_poll(dev, 1);	/* Wakeup device/bus at least once a second */
		if (fd >= 0) {
			if (fd == master_socket) {
				int client;

				client = accept(master_socket, NULL, 0);
				if (client >= 0) {
					shutdown(client, SHUT_RDWR);
					close(client);
				}
			} else {
				if (hmlan_parse_in(fd, dev) <= 0) {
					quit = 1;
				}
			}
		} else if (fd == -1) {
			if (errno) {
				perror("hmcfgusb_poll");
				quit = 1;
			} else {
				/* periodically wakeup the device */
				hmcfgusb_send_null_frame(dev);
			}
		}
	}

	hmcfgusb_close(dev);
	return 1;
}

void sigterm_handler(int sig)
{
	if (unlink(PID_FILE) == -1)
		perror("Can't remove PID file");

	exit(EXIT_SUCCESS);
}

#define FLAG_DAEMON	(1 << 0)
#define FLAG_PID_FILE	(1 << 1)

static int socket_server(char *iface, int port, int flags)
{
	struct sigaction sact;
	struct sockaddr_in sin;
	int sock;
	int n;
	pid_t pid;

	if (flags & FLAG_DAEMON) {
		FILE *pidfile = NULL;

		if (flags & FLAG_PID_FILE) {
			int fd;

			fd = open(PID_FILE, O_CREAT | O_EXCL | O_WRONLY, 0644);
			if (fd == -1) {
				if (errno == EEXIST) {
					pid_t old_pid;
					pidfile = fopen(PID_FILE, "r");
					if (!pidfile) {
						perror("PID file " PID_FILE " already exists, already running?");
						exit(EXIT_FAILURE);
					}

					if (fscanf(pidfile, "%u", &old_pid) != 1) {
						fclose(pidfile);
						fprintf(stderr, "Can't read old PID from " PID_FILE ", already running?\n");
						exit(EXIT_FAILURE);
					}

					fclose(pidfile);

					fprintf(stderr, "Already running with PID %u according to " PID_FILE "!\n", old_pid);
					exit(EXIT_FAILURE);
				}
				perror("Can't create PID file " PID_FILE);
				exit(EXIT_FAILURE);
			}

			pidfile = fdopen(fd, "w");
			if (!pidfile) {
				perror("Can't reopen PID file fd");
				exit(EXIT_FAILURE);
			}

			memset(&sact, 0, sizeof(sact));
			sact.sa_handler = sigterm_handler;

			if (sigaction(SIGTERM, &sact, NULL) == -1) {
				perror("sigaction(SIGTERM)");
				exit(EXIT_FAILURE);
			}
		}

		pid = fork();
		if (pid > 0) {
			if (pidfile) {
				fprintf(pidfile, "%u\n", pid);
				fclose(pidfile);
			}

			printf("Daemon with PID %u started!\n", pid);
			exit(EXIT_SUCCESS);
		} else if (pid < 0) {
			perror("fork");
			exit(EXIT_FAILURE);
		}

		if (pidfile)
			fclose(pidfile);
	}

	memset(&sact, 0, sizeof(sact));
	sact.sa_handler = SIG_IGN;

	if (sigaction(SIGPIPE, &sact, NULL) == -1) {
		perror("sigaction(SIGPIPE)");
		exit(EXIT_FAILURE);
	}

	impersonate_hmlanif = 1;

	sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
	if (sock == -1) {
		perror("Can't open socket");
		return EXIT_FAILURE;
	}

	n = 1;
	if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof(n)) == -1) {
		perror("Can't set socket options");
		return EXIT_FAILURE;
	}

	memset(&sin, 0, sizeof(sin));
	sin.sin_family = AF_INET;
	sin.sin_port = htons(port);
	if (!iface) {
		sin.sin_addr.s_addr = htonl(INADDR_ANY);
	} else {
		if (inet_pton(AF_INET, iface, &(sin.sin_addr.s_addr)) != 1) {
			perror("inet_ntop");
			return EXIT_FAILURE;
		}
	}

	if (bind(sock, (struct sockaddr*)&sin, sizeof(sin)) == -1) {
		perror("Can't bind socket");
		return EXIT_FAILURE;
	}

	if (listen(sock, 1) == -1) {
		perror("Can't listen on socket");
		return EXIT_FAILURE;
	}

	while(1) {
		struct sockaddr_in csin;
		socklen_t csinlen;
		int client;
		in_addr_t client_addr;

		memset(&csin, 0, sizeof(csin));
		csinlen = sizeof(csin);
		client = accept(sock, (struct sockaddr*)&csin, &csinlen);
		if (client == -1) {
			perror("Couldn't accept client");
			continue;
		}

		/* FIXME: getnameinfo... */
		client_addr = ntohl(csin.sin_addr.s_addr);

		if (verbose) {
			printf("Client %d.%d.%d.%d connected!\n",
					(client_addr & 0xff000000) >> 24,
					(client_addr & 0x00ff0000) >> 16,
					(client_addr & 0x0000ff00) >> 8,
					(client_addr & 0x000000ff));
		}

		comm(client, client, sock, flags);

		shutdown(client, SHUT_RDWR);
		close(client);

		if (verbose) {
			printf("Connection to %d.%d.%d.%d closed!\n",
					(client_addr & 0xff000000) >> 24,
					(client_addr & 0x00ff0000) >> 16,
					(client_addr & 0x0000ff00) >> 8,
					(client_addr & 0x000000ff));
		}
		sleep(1);
	}

	return EXIT_SUCCESS;
}

static int interactive_server(int flags)
{
	if (!comm(STDIN_FILENO, STDOUT_FILENO, -1, flags))
		return EXIT_FAILURE;

	return EXIT_SUCCESS;
}

void hmlan_syntax(char *prog)
{
	fprintf(stderr, "Syntax: %s options\n\n", prog);
	fprintf(stderr, "Possible options:\n");
	fprintf(stderr, "\t-D\tdebug mode\n");
	fprintf(stderr, "\t-d\tdaemon mode\n");
	fprintf(stderr, "\t-h\tthis help\n");
	fprintf(stderr, "\t-i\tinteractive mode (connect HM-CFG-USB to terminal)\n");
	fprintf(stderr, "\t-l ip\tlisten on given IP address only (for example 127.0.0.1)\n");
	fprintf(stderr, "\t-P\tcreate PID file " PID_FILE " in daemon mode\n");
	fprintf(stderr, "\t-p n\tlisten on port n (default 1000)\n");
	fprintf(stderr, "\t-v\tverbose mode\n");

}

int main(int argc, char **argv)
{
	int port = 1000;
	char *iface = NULL;
	int interactive = 0;
	int flags = 0;
	char *ep;
	int opt;

	while((opt = getopt(argc, argv, "DdhiPp:Rl:v")) != -1) {
		switch (opt) {
			case 'D':
				debug = 1;
				verbose = 1;
				break;
			case 'd':
				flags |= FLAG_DAEMON;
				break;
			case 'i':
				interactive = 1;
				break;
			case 'P':
				flags |= FLAG_PID_FILE;
				break;
			case 'p':
				port = strtoul(optarg, &ep, 10);
				if (*ep != '\0') {
					fprintf(stderr, "Can't parse port!\n");
					exit(EXIT_FAILURE);
				}
				break;
			case 'R':
				fprintf(stderr, "-R is no longer needed (1s wakeup is default)\n");
				break;
			case 'l':
				iface = optarg;
				break;
			case 'v':
				verbose = 1;
				break;
			case 'h':
			case ':':
			case '?':
			default:
				hmlan_syntax(argv[0]);
				exit(EXIT_FAILURE);
				break;
		}
	}
	
	if (interactive) {
		return interactive_server(flags);
	} else {
		return socket_server(iface, port, flags);
	}
}
Commit	Line	Data
4732a863	1	/* HM-CFG-LAN emulation for HM-CFG-USB
9db2e455 MG	2	*
	3	* Copyright (c) 2013 Michael Gernoth <michael@gernoth.net>
	4	*
	5	* Permission is hereby granted, free of charge, to any person obtaining a copy
	6	* of this software and associated documentation files (the "Software"), to
	7	* deal in the Software without restriction, including without limitation the
	8	* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
	9	* sell copies of the Software, and to permit persons to whom the Software is
	10	* furnished to do so, subject to the following conditions:
	11	*
	12	* The above copyright notice and this permission notice shall be included in
	13	* all copies or substantial portions of the Software.
	14	*
	15	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	16	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	17	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	18	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	19	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	20	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
	21	* IN THE SOFTWARE.
	22	*/
	23
	24	#include <stdio.h>
	25	#include <stdlib.h>
	26	#include <unistd.h>
	27	#include <stdint.h>
	28	#include <string.h>
	29	#include <strings.h>
	30	#include <poll.h>
4371275b	31	#include <signal.h>
9db2e455	32	#include <errno.h>
e0a7146e MG	33	#include <sys/types.h>
e0a7146e MG	34	#include <sys/socket.h>
b0bf6ad2	35	#include <sys/stat.h>
e6ab4631	36	#include <fcntl.h>
e0a7146e MG	37	#include <netinet/in.h>
e0a7146e MG	38	#include <arpa/inet.h>
9db2e455 MG	39	#include <libusb-1.0/libusb.h>
	40
	41	#include "hexdump.h"
	42	#include "hmcfgusb.h"
	43
b0bf6ad2 MG	44	#define PID_FILE "/var/run/hmland.pid"
b0bf6ad2 MG	45
627e3f33 MG	46	extern char *optarg;
627e3f33 MG	47
e0a7146e	48	static int impersonate_hmlanif = 0;
627e3f33 MG	49	static int debug = 0;
627e3f33 MG	50	static int verbose = 0;
e0a7146e	51
e75295bb MG	52	#define FLAG_LENGTH_BYTE (1<<0)
	53	#define FLAG_FORMAT_HEX (1<<1)
	54	#define FLAG_COMMA_BEFORE (1<<2)
	55	#define FLAG_COMMA_AFTER (1<<3)
	56	#define FLAG_NL (1<<4)
	57	#define FLAG_IGNORE_COMMAS (1<<5)
	58
	59	#define CHECK_SPACE(x) if ((*outpos + x) > outend) { fprintf(stderr, "Not enough space!\n"); return 0; }
	60	#define CHECK_AVAIL(x) if ((*inpos + x) > inend) { fprintf(stderr, "Not enough input available!\n"); return 0; }
	61
	62	static int format_part_out(uint8_t inpos, int inlen, uint8_t outpos, int outlen, int len, int flags)
	63	{
51d4ece6 MG	64	const uint8_t nibble[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
51d4ece6 MG	65	'A', 'B', 'C', 'D', 'E', 'F'};
e75295bb MG	66	uint8_t buf_out = outpos;
	67	uint8_t outend = outpos + outlen;
	68	uint8_t inend = inpos + inlen;
	69	int i;
	70
	71	if (flags & FLAG_COMMA_BEFORE) {
	72	CHECK_SPACE(1);
	73	**outpos=',';
	74	*outpos += 1;
	75	}
	76
	77	if (flags & FLAG_LENGTH_BYTE) {
	78	CHECK_AVAIL(1);
	79	len = **inpos;
	80	*inpos += 1;
	81	}
	82
	83	if (flags & FLAG_FORMAT_HEX) {
e75295bb MG	84	CHECK_AVAIL(len);
	85	CHECK_SPACE(len*2);
	86	for (i = 0; i < len; i++) {
51d4ece6 MG	87	outpos = nibble[((inpos) & 0xf0) >> 4];
	88	*outpos += 1;
	89	outpos = nibble[((inpos) & 0xf)];
	90	inpos += 1; outpos += 1;
e75295bb MG	91	}
	92	} else {
	93	CHECK_AVAIL(len);
	94	CHECK_SPACE(len);
	95	memcpy(outpos, inpos, len);
	96	*outpos += len;
	97	*inpos += len;
	98	}
	99
	100	if (flags & FLAG_COMMA_AFTER) {
	101	CHECK_SPACE(1);
	102	**outpos=',';
	103	*outpos += 1;
	104	}
	105
	106	if (flags & FLAG_NL) {
	107	CHECK_SPACE(2);
	108	**outpos='\r';
	109	*outpos += 1;
	110	**outpos='\n';
	111	*outpos += 1;
	112	}
	113
	114	return *outpos - buf_out;
	115	}
	116
51d4ece6 MG	117	static uint8_t ascii_to_nibble(uint8_t a)
	118	{
	119	uint8_t c = 0x00;
	120
	121	if ((a >= '0') && (a <= '9')) {
	122	c = a - '0';
	123	} else if ((a >= 'A') && (a <= 'F')) {
	124	c = (a - 'A') + 10;
	125	} else if ((a >= 'a') && (a <= 'f')) {
	126	c = (a - 'a') + 10;
	127	}
	128
	129	return c;
	130	}
	131
e75295bb MG	132	static int parse_part_in(uint8_t inpos, int inlen, uint8_t outpos, int outlen, int flags)
	133	{
	134	uint8_t buf_out = outpos;
	135	uint8_t outend = outpos + outlen;
	136	uint8_t inend = inpos + inlen;
e75295bb MG	137
	138	if (flags & FLAG_LENGTH_BYTE) {
	139	int len = 0;
	140	uint8_t *ip;
	141
	142	ip = *inpos;
	143	while(ip < inend) {
	144	if (*ip == ',') {
	145	ip++;
	146	if (!(flags & FLAG_IGNORE_COMMAS))
	147	break;
	148
	149	continue;
	150	}
	151	len++;
	152	ip++;
	153	}
	154	CHECK_SPACE(1);
	155	**outpos = (len / 2);
	156	*outpos += 1;
	157	}
	158
	159	while(*inpos < inend) {
	160	if (**inpos == ',') {
	161	*inpos += 1;
	162	if (!(flags & FLAG_IGNORE_COMMAS))
	163	break;
	164
	165	continue;
	166	}
	167
	168	CHECK_SPACE(1);
	169	CHECK_AVAIL(2);
e75295bb	170
51d4ece6 MG	171	outpos = ascii_to_nibble(inpos) << 4;
	172	*inpos += 1;
	173	outpos \|= ascii_to_nibble(inpos);
	174	inpos += 1; outpos += 1;
e75295bb MG	175	}
	176
	177	return *outpos - buf_out;
	178	}
	179
4371275b	180	static int hmlan_format_out(uint8_t buf, int buf_len, void data)
9db2e455	181	{
e75295bb MG	182	uint8_t out[1024];
	183	uint8_t *outpos;
	184	uint8_t *inpos;
e0a7146e	185	int fd = ((int)data);
4371275b	186	int w;
9db2e455 MG	187
9db2e455 MG	188	if (buf_len < 1)
4371275b	189	return 1;
9db2e455	190
e0a7146e	191	memset(out, 0, sizeof(out));
e75295bb MG	192	outpos = out;
e75295bb MG	193	inpos = buf;
e0a7146e	194
e75295bb	195	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, 0);
9db2e455 MG	196	switch(buf[0]) {
9db2e455 MG	197	case 'H':
e0a7146e MG	198	if (impersonate_hmlanif) {
	199	buf[5] = 'L';
	200	buf[6] = 'A';
	201	buf[7] = 'N';
	202	}
e75295bb MG	203	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 0, FLAG_LENGTH_BYTE);
	204	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	205	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 0, FLAG_COMMA_BEFORE \| FLAG_LENGTH_BYTE);
	206	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 3, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	207	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 3, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	208	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 4, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	209	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE \| FLAG_NL);
9db2e455 MG	210
	211	break;
	212	case 'E':
e75295bb MG	213	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 3, FLAG_FORMAT_HEX);
	214	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	215	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 4, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	216	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	217	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	218	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 0, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE \| FLAG_LENGTH_BYTE \| FLAG_NL);
	219
9db2e455 MG	220	break;
9db2e455 MG	221	case 'R':
e75295bb MG	222	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 4, FLAG_FORMAT_HEX);
	223	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	224	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 4, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	225	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	226	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	227	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 0, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE \| FLAG_LENGTH_BYTE \| FLAG_NL);
	228
9db2e455 MG	229	break;
9db2e455 MG	230	case 'I':
e75295bb MG	231	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX);
	232	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	233	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	234	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE \| FLAG_NL);
	235
	236	break;
9db2e455	237	default:
e75295bb	238	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), buf_len-1, FLAG_FORMAT_HEX \| FLAG_NL);
9db2e455 MG	239	hexdump(buf, buf_len, "Unknown> ");
	240	break;
	241	}
62f60cc1 MG	242	if (verbose) {
	243	int i;
	244
	245	printf("LAN < ");
11806002	246	for (i = 0; i < outpos-out-2; i++)
62f60cc1	247	printf("%c", out[i]);
11806002	248	printf("\n");
62f60cc1	249	}
4371275b MG	250
	251	w = write(fd, out, outpos-out);
	252	if (w <= 0) {
	253	perror("write");
	254	return 0;
	255	}
	256
	257	return 1;
9db2e455 MG	258	}
9db2e455 MG	259
e0a7146e	260	static int hmlan_parse_in(int fd, void *data)
9db2e455 MG	261	{
9db2e455 MG	262	struct hmcfgusb_dev *dev = data;
627e3f33	263	uint8_t buf[1025];
e75295bb MG	264	uint8_t out[0x40]; //FIXME!!!
	265	uint8_t *outpos;
	266	uint8_t *inpos;
9db2e455	267	int i;
627e3f33	268	int last;
9db2e455 MG	269	int r;
9db2e455 MG	270
627e3f33 MG	271	memset(buf, 0, sizeof(buf));
	272
	273	r = read(fd, buf, sizeof(buf)-1);
9db2e455	274	if (r > 0) {
627e3f33 MG	275	uint8_t *inend = buf + r;
	276
	277	inpos = buf;
	278
627e3f33 MG	279	while (inpos < inend) {
	280	uint8_t *instart = inpos;
	281
	282	if ((inpos == '\r') \|\| (inpos == '\n')) {
	283	inpos++;
	284	continue;
9db2e455	285	}
627e3f33 MG	286
627e3f33 MG	287	outpos = out;
9db2e455	288
627e3f33 MG	289	last = inend - inpos;
	290
	291	for (i = 0; i < last; i++) {
	292	if ((inpos[i] == '\r') \|\| (inpos[i] == '\n')) {
	293	last = i;
	294	break;
	295	}
	296	}
	297
	298	if (last == 0)
	299	continue;
	300
62f60cc1 MG	301	if (verbose) {
	302	printf("LAN > ");
	303	for (i = 0; i < last; i++)
	304	printf("%c", instart[i]);
	305	printf("\n");
	306	}
	307
627e3f33 MG	308	memset(out, 0, sizeof(out));
	309	outpos++ = inpos++;
	310
03ca736e	311	switch(*instart) {
627e3f33 MG	312	case 'S':
	313	parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
	314	parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
	315	parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
	316	parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
	317	parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
	318	parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), FLAG_LENGTH_BYTE);
	319	break;
d419ace3 MG	320	case 'Y':
	321	parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
	322	parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
	323	parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), FLAG_LENGTH_BYTE);
d26506bf	324	break;
627e3f33 MG	325	default:
	326	parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), FLAG_IGNORE_COMMAS);
	327	break;
	328	}
e75295bb	329
33df13be	330	hmcfgusb_send(dev, out, sizeof(out), 1);
627e3f33	331	}
9db2e455 MG	332	} else if (r < 0) {
9db2e455 MG	333	perror("read");
e0a7146e MG	334	return r;
	335	} else {
	336	return 0;
9db2e455	337	}
e0a7146e MG	338
e0a7146e MG	339	return 1;
9db2e455 MG	340	}
9db2e455 MG	341
23d96b59	342	static int comm(int fd_in, int fd_out, int master_socket, int flags)
9db2e455 MG	343	{
9db2e455 MG	344	struct hmcfgusb_dev *dev;
23d96b59	345	uint8_t out[0x40]; //FIXME!!!
9db2e455 MG	346	int quit = 0;
9db2e455 MG	347
627e3f33 MG	348	hmcfgusb_set_debug(debug);
627e3f33 MG	349
e0a7146e	350	dev = hmcfgusb_init(hmlan_format_out, &fd_out);
9db2e455 MG	351	if (!dev) {
9db2e455 MG	352	fprintf(stderr, "Can't initialize HM-CFG-USB!\n");
e0a7146e MG	353	return 0;
	354	}
	355
	356	if (!hmcfgusb_add_pfd(dev, fd_in, POLLIN)) {
	357	fprintf(stderr, "Can't add client to pollfd!\n");
	358	hmcfgusb_close(dev);
	359	return 0;
9db2e455 MG	360	}
9db2e455 MG	361
e0a7146e MG	362	if (master_socket >= 0) {
	363	if (!hmcfgusb_add_pfd(dev, master_socket, POLLIN)) {
	364	fprintf(stderr, "Can't add master_socket to pollfd!\n");
	365	hmcfgusb_close(dev);
	366	return 0;
	367	}
9db2e455 MG	368	}
9db2e455 MG	369
23d96b59 MG	370	memset(out, 0, sizeof(out));
23d96b59 MG	371	out[0] = 'K';
e09806b6	372	hmcfgusb_send_null_frame(dev);
23d96b59	373	hmcfgusb_send(dev, out, sizeof(out), 1);
9db2e455 MG	374
	375	while(!quit) {
	376	int fd;
	377
b55c340d	378	fd = hmcfgusb_poll(dev, 1); /* Wakeup device/bus at least once a second */
9db2e455	379	if (fd >= 0) {
e0a7146e MG	380	if (fd == master_socket) {
	381	int client;
	382
	383	client = accept(master_socket, NULL, 0);
	384	if (client >= 0) {
	385	shutdown(client, SHUT_RDWR);
	386	close(client);
	387	}
	388	} else {
	389	if (hmlan_parse_in(fd, dev) <= 0) {
	390	quit = 1;
	391	}
	392	}
9db2e455 MG	393	} else if (fd == -1) {
	394	if (errno) {
	395	perror("hmcfgusb_poll");
	396	quit = 1;
23d96b59 MG	397	} else {
	398	/* periodically wakeup the device */
	399	hmcfgusb_send_null_frame(dev);
9db2e455 MG	400	}
	401	}
	402	}
	403
813afd12	404	hmcfgusb_close(dev);
e0a7146e MG	405	return 1;
	406	}
	407
b0bf6ad2 MG	408	void sigterm_handler(int sig)
	409	{
	410	if (unlink(PID_FILE) == -1)
	411	perror("Can't remove PID file");
	412
	413	exit(EXIT_SUCCESS);
	414	}
	415
	416	#define FLAG_DAEMON (1 << 0)
	417	#define FLAG_PID_FILE (1 << 1)
	418
	419	static int socket_server(char *iface, int port, int flags)
e0a7146e	420	{
4371275b	421	struct sigaction sact;
e0a7146e MG	422	struct sockaddr_in sin;
	423	int sock;
	424	int n;
627e3f33 MG	425	pid_t pid;
627e3f33 MG	426
b0bf6ad2 MG	427	if (flags & FLAG_DAEMON) {
	428	FILE *pidfile = NULL;
	429
	430	if (flags & FLAG_PID_FILE) {
e6ab4631 MG	431	int fd;
	432
	433	fd = open(PID_FILE, O_CREAT \| O_EXCL \| O_WRONLY, 0644);
	434	if (fd == -1) {
	435	if (errno == EEXIST) {
	436	pid_t old_pid;
	437	pidfile = fopen(PID_FILE, "r");
	438	if (!pidfile) {
	439	perror("PID file " PID_FILE " already exists, already running?");
	440	exit(EXIT_FAILURE);
	441	}
	442
	443	if (fscanf(pidfile, "%u", &old_pid) != 1) {
	444	fclose(pidfile);
	445	fprintf(stderr, "Can't read old PID from " PID_FILE ", already running?\n");
	446	exit(EXIT_FAILURE);
	447	}
	448
	449	fclose(pidfile);
	450
	451	fprintf(stderr, "Already running with PID %u according to " PID_FILE "!\n", old_pid);
	452	exit(EXIT_FAILURE);
	453	}
	454	perror("Can't create PID file " PID_FILE);
	455	exit(EXIT_FAILURE);
	456	}
b0bf6ad2	457
e6ab4631	458	pidfile = fdopen(fd, "w");
b0bf6ad2	459	if (!pidfile) {
e6ab4631	460	perror("Can't reopen PID file fd");
b0bf6ad2 MG	461	exit(EXIT_FAILURE);
	462	}
	463
	464	memset(&sact, 0, sizeof(sact));
	465	sact.sa_handler = sigterm_handler;
	466
	467	if (sigaction(SIGTERM, &sact, NULL) == -1) {
	468	perror("sigaction(SIGTERM)");
	469	exit(EXIT_FAILURE);
	470	}
	471	}
	472
627e3f33 MG	473	pid = fork();
627e3f33 MG	474	if (pid > 0) {
b0bf6ad2 MG	475	if (pidfile) {
	476	fprintf(pidfile, "%u\n", pid);
	477	fclose(pidfile);
	478	}
	479
627e3f33 MG	480	printf("Daemon with PID %u started!\n", pid);
	481	exit(EXIT_SUCCESS);
	482	} else if (pid < 0) {
	483	perror("fork");
	484	exit(EXIT_FAILURE);
	485	}
b0bf6ad2 MG	486
	487	if (pidfile)
	488	fclose(pidfile);
627e3f33	489	}
e0a7146e	490
4371275b MG	491	memset(&sact, 0, sizeof(sact));
	492	sact.sa_handler = SIG_IGN;
	493
	494	if (sigaction(SIGPIPE, &sact, NULL) == -1) {
b0bf6ad2	495	perror("sigaction(SIGPIPE)");
27f4063e	496	exit(EXIT_FAILURE);
4371275b MG	497	}
4371275b MG	498
e0a7146e MG	499	impersonate_hmlanif = 1;
	500
	501	sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
	502	if (sock == -1) {
	503	perror("Can't open socket");
	504	return EXIT_FAILURE;
	505	}
	506
	507	n = 1;
	508	if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof(n)) == -1) {
	509	perror("Can't set socket options");
	510	return EXIT_FAILURE;
	511	}
	512
	513	memset(&sin, 0, sizeof(sin));
	514	sin.sin_family = AF_INET;
	515	sin.sin_port = htons(port);
4a8a2269 MG	516	if (!iface) {
	517	sin.sin_addr.s_addr = htonl(INADDR_ANY);
	518	} else {
	519	if (inet_pton(AF_INET, iface, &(sin.sin_addr.s_addr)) != 1) {
	520	perror("inet_ntop");
	521	return EXIT_FAILURE;
	522	}
	523	}
e0a7146e MG	524
	525	if (bind(sock, (struct sockaddr*)&sin, sizeof(sin)) == -1) {
	526	perror("Can't bind socket");
	527	return EXIT_FAILURE;
	528	}
	529
	530	if (listen(sock, 1) == -1) {
	531	perror("Can't listen on socket");
	532	return EXIT_FAILURE;
	533	}
	534
	535	while(1) {
	536	struct sockaddr_in csin;
	537	socklen_t csinlen;
	538	int client;
627e3f33	539	in_addr_t client_addr;
e0a7146e MG	540
	541	memset(&csin, 0, sizeof(csin));
	542	csinlen = sizeof(csin);
	543	client = accept(sock, (struct sockaddr*)&csin, &csinlen);
	544	if (client == -1) {
	545	perror("Couldn't accept client");
	546	continue;
	547	}
	548
627e3f33 MG	549	/* FIXME: getnameinfo... */
	550	client_addr = ntohl(csin.sin_addr.s_addr);
	551
	552	if (verbose) {
	553	printf("Client %d.%d.%d.%d connected!\n",
	554	(client_addr & 0xff000000) >> 24,
	555	(client_addr & 0x00ff0000) >> 16,
	556	(client_addr & 0x0000ff00) >> 8,
	557	(client_addr & 0x000000ff));
	558	}
e0a7146e	559
23d96b59	560	comm(client, client, sock, flags);
e0a7146e MG	561
	562	shutdown(client, SHUT_RDWR);
	563	close(client);
	564
627e3f33 MG	565	if (verbose) {
	566	printf("Connection to %d.%d.%d.%d closed!\n",
	567	(client_addr & 0xff000000) >> 24,
	568	(client_addr & 0x00ff0000) >> 16,
	569	(client_addr & 0x0000ff00) >> 8,
	570	(client_addr & 0x000000ff));
	571	}
e09806b6	572	sleep(1);
e0a7146e MG	573	}
	574
	575	return EXIT_SUCCESS;
	576	}
	577
23d96b59	578	static int interactive_server(int flags)
e0a7146e	579	{
23d96b59	580	if (!comm(STDIN_FILENO, STDOUT_FILENO, -1, flags))
e0a7146e	581	return EXIT_FAILURE;
9db2e455 MG	582
	583	return EXIT_SUCCESS;
	584	}
e0a7146e	585
627e3f33 MG	586	void hmlan_syntax(char *prog)
	587	{
	588	fprintf(stderr, "Syntax: %s options\n\n", prog);
	589	fprintf(stderr, "Possible options:\n");
	590	fprintf(stderr, "\t-D\tdebug mode\n");
	591	fprintf(stderr, "\t-d\tdaemon mode\n");
	592	fprintf(stderr, "\t-h\tthis help\n");
	593	fprintf(stderr, "\t-i\tinteractive mode (connect HM-CFG-USB to terminal)\n");
4a8a2269	594	fprintf(stderr, "\t-l ip\tlisten on given IP address only (for example 127.0.0.1)\n");
b0bf6ad2	595	fprintf(stderr, "\t-P\tcreate PID file " PID_FILE " in daemon mode\n");
627e3f33 MG	596	fprintf(stderr, "\t-p n\tlisten on port n (default 1000)\n");
	597	fprintf(stderr, "\t-v\tverbose mode\n");
	598
	599	}
	600
e0a7146e MG	601	int main(int argc, char **argv)
e0a7146e MG	602	{
627e3f33	603	int port = 1000;
4a8a2269	604	char *iface = NULL;
627e3f33	605	int interactive = 0;
b0bf6ad2	606	int flags = 0;
627e3f33 MG	607	char *ep;
	608	int opt;
	609
23d96b59	610	while((opt = getopt(argc, argv, "DdhiPp:Rl:v")) != -1) {
627e3f33 MG	611	switch (opt) {
	612	case 'D':
	613	debug = 1;
	614	verbose = 1;
	615	break;
	616	case 'd':
b0bf6ad2	617	flags \|= FLAG_DAEMON;
627e3f33 MG	618	break;
	619	case 'i':
	620	interactive = 1;
	621	break;
b0bf6ad2 MG	622	case 'P':
	623	flags \|= FLAG_PID_FILE;
	624	break;
627e3f33 MG	625	case 'p':
	626	port = strtoul(optarg, &ep, 10);
	627	if (*ep != '\0') {
	628	fprintf(stderr, "Can't parse port!\n");
	629	exit(EXIT_FAILURE);
	630	}
	631	break;
23d96b59	632	case 'R':
b55c340d	633	fprintf(stderr, "-R is no longer needed (1s wakeup is default)\n");
23d96b59	634	break;
4a8a2269 MG	635	case 'l':
	636	iface = optarg;
	637	break;
627e3f33 MG	638	case 'v':
	639	verbose = 1;
	640	break;
	641	case 'h':
	642	case ':':
	643	case '?':
	644	default:
	645	hmlan_syntax(argv[0]);
	646	exit(EXIT_FAILURE);
	647	break;
	648	}
	649	}
	650
	651	if (interactive) {
23d96b59	652	return interactive_server(flags);
627e3f33	653	} else {
b0bf6ad2	654	return socket_server(iface, port, flags);
627e3f33	655	}
e0a7146e	656	}