[hmcfgusb] / hmland.c

/* HM-CFG-LAN emuldation 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 <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <libusb-1.0/libusb.h>

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

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)
{
	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) {
		char hex[3];

		memset(hex, 0, sizeof(hex));

		CHECK_AVAIL(len);
		CHECK_SPACE(len*2);
		for (i = 0; i < len; i++) {
			if (snprintf(hex, sizeof(hex), "%02X", **inpos) != 2) {
				fprintf(stderr, "Can't format hex-string!\n");
				return 0;
			}
			*inpos += 1;
			memcpy(*outpos, hex, 2);
			*outpos += 2;
		}
	} 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 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;
	char hex[3];

	memset(hex, 0, sizeof(hex));

	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);
		memcpy(hex, *inpos, 2);
		*inpos += 2;

		**outpos = strtoul(hex, NULL, 16);
		*outpos += 1;
	}

	return *outpos - buf_out;
}

static void 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);

	if (buf_len < 1)
		return;

	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;
	}
	write(fd, out, outpos-out);
	if (debug)
		fprintf(stderr, "LAN < %s\n", out);
}

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;

		if (debug)
			fprintf(stderr, "LAN > %s\n", 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;

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

			switch(buf[0]) {
				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;
				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)
{
	struct hmcfgusb_dev *dev;
	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;
		}
	}

	hmcfgusb_send(dev, (unsigned char*)"K", 1, 1);

	while(!quit) {
		int fd;

		fd = hmcfgusb_poll(dev, 3600);
		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;
			}
		}
	}

	hmcfgusb_close(dev);
	return 1;
}

static int socket_server(int port, int daemon)
{
	struct sockaddr_in sin;
	int sock;
	int n;
	pid_t pid;

	if (daemon) {
		pid = fork();
		if (pid > 0) {
			printf("Daemon with PID %u started!\n", pid);
			exit(EXIT_SUCCESS);
		} else if (pid < 0) {
			perror("fork");
			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);
	sin.sin_addr.s_addr = htonl(INADDR_ANY);

	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);

		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));
		}

	}

	return EXIT_SUCCESS;
}

static int interactive_server(void)
{
	if (!comm(STDIN_FILENO, STDOUT_FILENO, -1))
		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-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;
	int interactive = 0;
	int daemon = 0;
	char *ep;
	int opt;

	while((opt = getopt(argc, argv, "Ddhip:v")) != -1) {
		switch (opt) {
			case 'D':
				debug = 1;
				verbose = 1;
				break;
			case 'd':
				daemon = 1;
				break;
			case 'i':
				interactive = 1;
				break;
			case 'p':
				port = strtoul(optarg, &ep, 10);
				if (*ep != '\0') {
					fprintf(stderr, "Can't parse port!\n");
					exit(EXIT_FAILURE);
				}
				break;
			case 'v':
				verbose = 1;
				break;
			case 'h':
			case ':':
			case '?':
			default:
				hmlan_syntax(argv[0]);
				exit(EXIT_FAILURE);
				break;
		}
	}
	
	if (interactive) {
		return interactive_server();
	} else {
		return socket_server(port, daemon);
	}
}
Commit	Line	Data
9db2e455 MG	1	/* HM-CFG-LAN emuldation for HM-CFG-USB
	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>
	31	#include <errno.h>
e0a7146e MG	32	#include <sys/types.h>
	33	#include <sys/socket.h>
	34	#include <netinet/in.h>
	35	#include <arpa/inet.h>
9db2e455 MG	36	#include <libusb-1.0/libusb.h>
	37
	38	#include "hexdump.h"
	39	#include "hmcfgusb.h"
	40
627e3f33 MG	41	extern char *optarg;
627e3f33 MG	42
e0a7146e	43	static int impersonate_hmlanif = 0;
627e3f33 MG	44	static int debug = 0;
627e3f33 MG	45	static int verbose = 0;
e0a7146e	46
e75295bb MG	47	#define FLAG_LENGTH_BYTE (1<<0)
	48	#define FLAG_FORMAT_HEX (1<<1)
	49	#define FLAG_COMMA_BEFORE (1<<2)
	50	#define FLAG_COMMA_AFTER (1<<3)
	51	#define FLAG_NL (1<<4)
	52	#define FLAG_IGNORE_COMMAS (1<<5)
	53
	54	#define CHECK_SPACE(x) if ((*outpos + x) > outend) { fprintf(stderr, "Not enough space!\n"); return 0; }
	55	#define CHECK_AVAIL(x) if ((*inpos + x) > inend) { fprintf(stderr, "Not enough input available!\n"); return 0; }
	56
	57	static int format_part_out(uint8_t inpos, int inlen, uint8_t outpos, int outlen, int len, int flags)
	58	{
	59	uint8_t buf_out = outpos;
	60	uint8_t outend = outpos + outlen;
	61	uint8_t inend = inpos + inlen;
	62	int i;
	63
	64	if (flags & FLAG_COMMA_BEFORE) {
	65	CHECK_SPACE(1);
	66	**outpos=',';
	67	*outpos += 1;
	68	}
	69
	70	if (flags & FLAG_LENGTH_BYTE) {
	71	CHECK_AVAIL(1);
	72	len = **inpos;
	73	*inpos += 1;
	74	}
	75
	76	if (flags & FLAG_FORMAT_HEX) {
	77	char hex[3];
	78
	79	memset(hex, 0, sizeof(hex));
	80
	81	CHECK_AVAIL(len);
	82	CHECK_SPACE(len*2);
	83	for (i = 0; i < len; i++) {
	84	if (snprintf(hex, sizeof(hex), "%02X", **inpos) != 2) {
	85	fprintf(stderr, "Can't format hex-string!\n");
	86	return 0;
	87	}
	88	*inpos += 1;
	89	memcpy(*outpos, hex, 2);
	90	*outpos += 2;
	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
117	static int parse_part_in(uint8_t inpos, int inlen, uint8_t outpos, int outlen, int flags)
118	{
119	uint8_t buf_out = outpos;
120	uint8_t outend = outpos + outlen;
121	uint8_t inend = inpos + inlen;
122	char hex[3];
123
124	memset(hex, 0, sizeof(hex));
125
126	if (flags & FLAG_LENGTH_BYTE) {
127	int len = 0;
128	uint8_t *ip;
129
130	ip = *inpos;
131	while(ip < inend) {
132	if (*ip == ',') {
133	ip++;
134	if (!(flags & FLAG_IGNORE_COMMAS))
135	break;
136
137	continue;
138	}
139	len++;
140	ip++;
141	}
142	CHECK_SPACE(1);
143	**outpos = (len / 2);
144	*outpos += 1;
145	}
146
147	while(*inpos < inend) {
148	if (**inpos == ',') {
149	*inpos += 1;
150	if (!(flags & FLAG_IGNORE_COMMAS))
151	break;
152
153	continue;
154	}
155
156	CHECK_SPACE(1);
157	CHECK_AVAIL(2);
158	memcpy(hex, *inpos, 2);
159	*inpos += 2;
160
161	**outpos = strtoul(hex, NULL, 16);
162	*outpos += 1;
163	}
164
165	return *outpos - buf_out;
166	}
167
e0a7146e	168	static void hmlan_format_out(uint8_t buf, int buf_len, void data)
9db2e455	169	{
e75295bb MG	170	uint8_t out[1024];
	171	uint8_t *outpos;
	172	uint8_t *inpos;
e0a7146e	173	int fd = ((int)data);
9db2e455 MG	174
	175	if (buf_len < 1)
	176	return;
	177
e0a7146e	178	memset(out, 0, sizeof(out));
e75295bb MG	179	outpos = out;
e75295bb MG	180	inpos = buf;
e0a7146e	181
e75295bb	182	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, 0);
9db2e455 MG	183	switch(buf[0]) {
9db2e455 MG	184	case 'H':
e0a7146e MG	185	if (impersonate_hmlanif) {
	186	buf[5] = 'L';
	187	buf[6] = 'A';
	188	buf[7] = 'N';
	189	}
e75295bb MG	190	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 0, FLAG_LENGTH_BYTE);
	191	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	192	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 0, FLAG_COMMA_BEFORE \| FLAG_LENGTH_BYTE);
	193	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 3, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	194	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 3, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	195	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 4, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	196	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE \| FLAG_NL);
9db2e455 MG	197
	198	break;
	199	case 'E':
e75295bb MG	200	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 3, FLAG_FORMAT_HEX);
	201	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	202	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 4, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	203	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	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_FORMAT_HEX \| FLAG_COMMA_BEFORE \| FLAG_LENGTH_BYTE \| FLAG_NL);
	206
9db2e455 MG	207	break;
9db2e455 MG	208	case 'R':
e75295bb MG	209	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 4, FLAG_FORMAT_HEX);
	210	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	211	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 4, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	212	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	213	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	214	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);
	215
9db2e455 MG	216	break;
9db2e455 MG	217	case 'I':
e75295bb MG	218	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX);
	219	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	220	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE);
	221	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX \| FLAG_COMMA_BEFORE \| FLAG_NL);
	222
	223	break;
9db2e455	224	default:
e75295bb	225	format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), buf_len-1, FLAG_FORMAT_HEX \| FLAG_NL);
9db2e455 MG	226	hexdump(buf, buf_len, "Unknown> ");
	227	break;
	228	}
e75295bb	229	write(fd, out, outpos-out);
627e3f33 MG	230	if (debug)
627e3f33 MG	231	fprintf(stderr, "LAN < %s\n", out);
9db2e455 MG	232	}
9db2e455 MG	233
e0a7146e	234	static int hmlan_parse_in(int fd, void *data)
9db2e455 MG	235	{
9db2e455 MG	236	struct hmcfgusb_dev *dev = data;
627e3f33	237	uint8_t buf[1025];
e75295bb MG	238	uint8_t out[0x40]; //FIXME!!!
	239	uint8_t *outpos;
	240	uint8_t *inpos;
9db2e455	241	int i;
627e3f33	242	int last;
9db2e455 MG	243	int r;
9db2e455 MG	244
627e3f33 MG	245	memset(buf, 0, sizeof(buf));
	246
	247	r = read(fd, buf, sizeof(buf)-1);
9db2e455	248	if (r > 0) {
627e3f33 MG	249	uint8_t *inend = buf + r;
	250
	251	inpos = buf;
	252
	253	if (debug)
	254	fprintf(stderr, "LAN > %s\n", buf);
	255
	256	while (inpos < inend) {
	257	uint8_t *instart = inpos;
	258
	259	if ((inpos == '\r') \|\| (inpos == '\n')) {
	260	inpos++;
	261	continue;
9db2e455	262	}
627e3f33 MG	263
627e3f33 MG	264	outpos = out;
9db2e455	265
627e3f33 MG	266	last = inend - inpos;
	267
	268	for (i = 0; i < last; i++) {
	269	if ((inpos[i] == '\r') \|\| (inpos[i] == '\n')) {
	270	last = i;
	271	break;
	272	}
	273	}
	274
	275	if (last == 0)
	276	continue;
	277
	278	memset(out, 0, sizeof(out));
	279	outpos++ = inpos++;
	280
	281	switch(buf[0]) {
	282	case 'S':
	283	parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
	284	parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
	285	parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
	286	parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
	287	parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), 0);
	288	parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), FLAG_LENGTH_BYTE);
	289	break;
	290	default:
	291	parse_part_in(&inpos, (last-(inpos-instart)), &outpos, (sizeof(out)-(outpos-out)), FLAG_IGNORE_COMMAS);
	292	break;
	293	}
e75295bb	294
33df13be	295	hmcfgusb_send(dev, out, sizeof(out), 1);
627e3f33	296	}
9db2e455 MG	297	} else if (r < 0) {
9db2e455 MG	298	perror("read");
e0a7146e MG	299	return r;
	300	} else {
	301	return 0;
9db2e455	302	}
e0a7146e MG	303
e0a7146e MG	304	return 1;
9db2e455 MG	305	}
9db2e455 MG	306
e0a7146e	307	static int comm(int fd_in, int fd_out, int master_socket)
9db2e455 MG	308	{
	309	struct hmcfgusb_dev *dev;
	310	int quit = 0;
	311
627e3f33 MG	312	hmcfgusb_set_debug(debug);
627e3f33 MG	313
e0a7146e	314	dev = hmcfgusb_init(hmlan_format_out, &fd_out);
9db2e455 MG	315	if (!dev) {
9db2e455 MG	316	fprintf(stderr, "Can't initialize HM-CFG-USB!\n");
e0a7146e MG	317	return 0;
	318	}
	319
	320	if (!hmcfgusb_add_pfd(dev, fd_in, POLLIN)) {
	321	fprintf(stderr, "Can't add client to pollfd!\n");
	322	hmcfgusb_close(dev);
	323	return 0;
9db2e455 MG	324	}
9db2e455 MG	325
e0a7146e MG	326	if (master_socket >= 0) {
	327	if (!hmcfgusb_add_pfd(dev, master_socket, POLLIN)) {
	328	fprintf(stderr, "Can't add master_socket to pollfd!\n");
	329	hmcfgusb_close(dev);
	330	return 0;
	331	}
9db2e455 MG	332	}
	333
	334	hmcfgusb_send(dev, (unsigned char*)"K", 1, 1);
	335
	336	while(!quit) {
	337	int fd;
	338
	339	fd = hmcfgusb_poll(dev, 3600);
	340	if (fd >= 0) {
e0a7146e MG	341	if (fd == master_socket) {
	342	int client;
	343
	344	client = accept(master_socket, NULL, 0);
	345	if (client >= 0) {
	346	shutdown(client, SHUT_RDWR);
	347	close(client);
	348	}
	349	} else {
	350	if (hmlan_parse_in(fd, dev) <= 0) {
	351	quit = 1;
	352	}
	353	}
9db2e455 MG	354	} else if (fd == -1) {
	355	if (errno) {
	356	perror("hmcfgusb_poll");
	357	quit = 1;
	358	}
	359	}
	360	}
	361
813afd12	362	hmcfgusb_close(dev);
e0a7146e MG	363	return 1;
	364	}
	365
627e3f33	366	static int socket_server(int port, int daemon)
e0a7146e MG	367	{
	368	struct sockaddr_in sin;
	369	int sock;
	370	int n;
627e3f33 MG	371	pid_t pid;
	372
	373	if (daemon) {
	374	pid = fork();
	375	if (pid > 0) {
	376	printf("Daemon with PID %u started!\n", pid);
	377	exit(EXIT_SUCCESS);
	378	} else if (pid < 0) {
	379	perror("fork");
	380	exit(EXIT_FAILURE);
	381	}
	382	}
e0a7146e MG	383
	384	impersonate_hmlanif = 1;
	385
	386	sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
	387	if (sock == -1) {
	388	perror("Can't open socket");
	389	return EXIT_FAILURE;
	390	}
	391
	392	n = 1;
	393	if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &n, sizeof(n)) == -1) {
	394	perror("Can't set socket options");
	395	return EXIT_FAILURE;
	396	}
	397
	398	memset(&sin, 0, sizeof(sin));
	399	sin.sin_family = AF_INET;
	400	sin.sin_port = htons(port);
	401	sin.sin_addr.s_addr = htonl(INADDR_ANY);
	402
	403	if (bind(sock, (struct sockaddr*)&sin, sizeof(sin)) == -1) {
	404	perror("Can't bind socket");
	405	return EXIT_FAILURE;
	406	}
	407
	408	if (listen(sock, 1) == -1) {
	409	perror("Can't listen on socket");
	410	return EXIT_FAILURE;
	411	}
	412
	413	while(1) {
	414	struct sockaddr_in csin;
	415	socklen_t csinlen;
	416	int client;
627e3f33	417	in_addr_t client_addr;
e0a7146e MG	418
	419	memset(&csin, 0, sizeof(csin));
	420	csinlen = sizeof(csin);
	421	client = accept(sock, (struct sockaddr*)&csin, &csinlen);
	422	if (client == -1) {
	423	perror("Couldn't accept client");
	424	continue;
	425	}
	426
627e3f33 MG	427	/* FIXME: getnameinfo... */
	428	client_addr = ntohl(csin.sin_addr.s_addr);
	429
	430	if (verbose) {
	431	printf("Client %d.%d.%d.%d connected!\n",
	432	(client_addr & 0xff000000) >> 24,
	433	(client_addr & 0x00ff0000) >> 16,
	434	(client_addr & 0x0000ff00) >> 8,
	435	(client_addr & 0x000000ff));
	436	}
e0a7146e MG	437
	438	comm(client, client, sock);
	439
	440	shutdown(client, SHUT_RDWR);
	441	close(client);
	442
627e3f33 MG	443	if (verbose) {
	444	printf("Connection to %d.%d.%d.%d closed!\n",
	445	(client_addr & 0xff000000) >> 24,
	446	(client_addr & 0x00ff0000) >> 16,
	447	(client_addr & 0x0000ff00) >> 8,
	448	(client_addr & 0x000000ff));
	449	}
e0a7146e MG	450
	451	}
	452
	453	return EXIT_SUCCESS;
	454	}
	455
	456	static int interactive_server(void)
	457	{
	458	if (!comm(STDIN_FILENO, STDOUT_FILENO, -1))
	459	return EXIT_FAILURE;
9db2e455 MG	460
	461	return EXIT_SUCCESS;
	462	}
e0a7146e	463
627e3f33 MG	464	void hmlan_syntax(char *prog)
	465	{
	466	fprintf(stderr, "Syntax: %s options\n\n", prog);
	467	fprintf(stderr, "Possible options:\n");
	468	fprintf(stderr, "\t-D\tdebug mode\n");
	469	fprintf(stderr, "\t-d\tdaemon mode\n");
	470	fprintf(stderr, "\t-h\tthis help\n");
	471	fprintf(stderr, "\t-i\tinteractive mode (connect HM-CFG-USB to terminal)\n");
	472	fprintf(stderr, "\t-p n\tlisten on port n (default 1000)\n");
	473	fprintf(stderr, "\t-v\tverbose mode\n");
	474
	475	}
	476
e0a7146e MG	477	int main(int argc, char **argv)
e0a7146e MG	478	{
627e3f33 MG	479	int port = 1000;
	480	int interactive = 0;
	481	int daemon = 0;
	482	char *ep;
	483	int opt;
	484
	485	while((opt = getopt(argc, argv, "Ddhip:v")) != -1) {
	486	switch (opt) {
	487	case 'D':
	488	debug = 1;
	489	verbose = 1;
	490	break;
	491	case 'd':
	492	daemon = 1;
	493	break;
	494	case 'i':
	495	interactive = 1;
	496	break;
	497	case 'p':
	498	port = strtoul(optarg, &ep, 10);
	499	if (*ep != '\0') {
	500	fprintf(stderr, "Can't parse port!\n");
	501	exit(EXIT_FAILURE);
	502	}
	503	break;
	504	case 'v':
	505	verbose = 1;
	506	break;
	507	case 'h':
	508	case ':':
	509	case '?':
	510	default:
	511	hmlan_syntax(argv[0]);
	512	exit(EXIT_FAILURE);
	513	break;
	514	}
	515	}
	516
	517	if (interactive) {
	518	return interactive_server();
	519	} else {
	520	return socket_server(port, daemon);
	521	}
e0a7146e	522	}