-/* HM-CFG-LAN emuldation for HM-CFG-USB
+/* HM-CFG-LAN emulation for HM-CFG-USB
*
* Copyright (c) 2013 Michael Gernoth <michael@gernoth.net>
*
#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 <time.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"
+
+#define DEFAULT_REBOOT_SECONDS 86400
+
extern char *optarg;
static int impersonate_hmlanif = 0;
static int debug = 0;
static int verbose = 0;
+static int reboot_seconds = 0;
+static int reboot_at_hour = -1;
+static int reboot_at_minute = -1;
+
+struct queued_rx {
+ char *rx;
+ int len;
+ struct queued_rx *next;
+};
+
+static struct queued_rx *qrx = NULL;
+static int wait_for_h = 0;
#define FLAG_LENGTH_BYTE (1<<0)
#define FLAG_FORMAT_HEX (1<<1)
#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 void print_timestamp(FILE *f)
+{
+ struct timeval tv;
+ struct tm *tmp;
+ char ts[32];
+
+ gettimeofday(&tv, NULL);
+ tmp = localtime(&tv.tv_sec);
+ memset(ts, 0, sizeof(ts));
+ strftime(ts, sizeof(ts)-1, "%Y-%m-%d %H:%M:%S", tmp);
+ fprintf(f, "%s.%06ld: ", ts, tv.tv_usec);
+}
+
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;
}
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;
+ **outpos = nibble[((**inpos) & 0xf0) >> 4];
+ *outpos += 1;
+ **outpos = nibble[((**inpos) & 0xf)];
+ *inpos += 1; *outpos += 1;
}
} else {
CHECK_AVAIL(len);
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;
- char hex[3];
-
- memset(hex, 0, sizeof(hex));
if (flags & FLAG_LENGTH_BYTE) {
int len = 0;
CHECK_SPACE(1);
CHECK_AVAIL(2);
- memcpy(hex, *inpos, 2);
- *inpos += 2;
- **outpos = strtoul(hex, NULL, 16);
- *outpos += 1;
+ **outpos = ascii_to_nibble(**inpos) << 4;
+ *inpos += 1;
+ **outpos |= ascii_to_nibble(**inpos);
+ *inpos += 1; *outpos += 1;
}
return *outpos - buf_out;
}
-static void hmlan_format_out(uint8_t *buf, int buf_len, void *data)
+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;
+ return 1;
memset(out, 0, sizeof(out));
outpos = out;
hexdump(buf, buf_len, "Unknown> ");
break;
}
- write(fd, out, outpos-out);
- if (debug)
- fprintf(stderr, "LAN < %s\n", out);
+
+ /* Queue packet until first respone to 'K' is received */
+ if (wait_for_h && buf[0] != 'H') {
+ struct queued_rx **rxp = &qrx;
+
+ while (*rxp)
+ rxp = &((*rxp)->next);
+
+ *rxp = malloc(sizeof(struct queued_rx));
+ if (!*rxp) {
+ perror("malloc");
+ return 0;
+ }
+
+ memset(*rxp, 0, sizeof(struct queued_rx));
+ (*rxp)->len = outpos-out;
+ (*rxp)->rx = malloc((*rxp)->len);
+ if (!(*rxp)->rx) {
+ perror("malloc");
+ return 0;
+ }
+ memset((*rxp)->rx, 0, (*rxp)->len);
+ memcpy((*rxp)->rx, out, (*rxp)->len);
+
+ return 1;
+ }
+
+ if (verbose) {
+ int i;
+
+ print_timestamp(stdout);
+ 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;
+ }
+
+ /* Send all queued packets */
+ if (wait_for_h) {
+ struct queued_rx *curr_rx = qrx;
+ struct queued_rx *last_rx;
+
+ while (curr_rx) {
+ if (verbose) {
+ int i;
+
+ print_timestamp(stdout);
+ printf("LAN < ");
+ for (i = 0; i < curr_rx->len-2; i++)
+ printf("%c", curr_rx->rx[i]);
+ printf("\n");
+ }
+
+ w = write(fd, curr_rx->rx, curr_rx->len);
+ if (w <= 0) {
+ perror("write");
+ }
+ last_rx = curr_rx;
+ curr_rx = curr_rx->next;
+
+ free(last_rx->rx);
+ free(last_rx);
+ }
+
+ qrx = NULL;
+
+ wait_for_h = 0;
+ }
+
+ return 1;
}
static int hmlan_parse_in(int fd, void *data)
inpos = buf;
- if (debug)
- fprintf(stderr, "LAN > %s\n", buf);
-
while (inpos < inend) {
uint8_t *instart = inpos;
if (last == 0)
continue;
+ if (verbose) {
+ print_timestamp(stdout);
+ printf("LAN > ");
+ for (i = 0; i < last; i++)
+ printf("%c", instart[i]);
+ printf("\n");
+ }
+
memset(out, 0, sizeof(out));
*outpos++ = *inpos++;
- switch(buf[0]) {
+ 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)), 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");
+ if (errno != ECONNRESET)
+ perror("read");
return r;
} else {
return 0;
return 1;
}
-static int comm(int fd_in, int fd_out, int master_socket)
+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);
return 0;
}
+ if (dev->bootloader) {
+ if (verbose)
+ printf("HM-CFG-USB in bootloader mode, restarting in normal mode...\n");
+
+ hmcfgusb_leave_bootloader(dev);
+
+ hmcfgusb_close(dev);
+ sleep(1);
+ return 0;
+ }
+
+ if ((reboot_at_hour != -1) && (reboot_at_minute != -1)) {
+ struct tm *tm_s;
+ time_t tm;
+
+ tm = time(NULL);
+ tm_s = localtime(&tm);
+ if (tm_s == NULL) {
+ perror("localtime");
+ return 0;
+ }
+
+ tm_s->tm_hour = reboot_at_hour;
+ tm_s->tm_min = reboot_at_minute;
+ tm_s->tm_sec = 0;
+
+ tm = mktime(tm_s);
+ reboot_seconds = tm - dev->opened_at;
+
+ while (reboot_seconds <= 0)
+ reboot_seconds += 86400;
+ }
+
+ if (verbose && reboot_seconds)
+ printf("Rebooting in %u seconds\n", reboot_seconds);
+
+
if (!hmcfgusb_add_pfd(dev, fd_in, POLLIN)) {
fprintf(stderr, "Can't add client to pollfd!\n");
hmcfgusb_close(dev);
}
}
- hmcfgusb_send(dev, (unsigned char*)"K", 1, 1);
+ memset(out, 0, sizeof(out));
+ out[0] = 'K';
+ wait_for_h = 1;
+ hmcfgusb_send_null_frame(dev, 1);
+ hmcfgusb_send(dev, out, sizeof(out), 1);
while(!quit) {
int fd;
- fd = hmcfgusb_poll(dev, 3600);
+ fd = hmcfgusb_poll(dev, 1); /* Wakeup device/bus at least once a second */
if (fd >= 0) {
if (fd == master_socket) {
int client;
}
} else if (fd == -1) {
if (errno) {
- perror("hmcfgusb_poll");
- quit = 1;
+ if (errno != ETIMEDOUT) {
+ perror("hmcfgusb_poll");
+ quit = 1;
+ } else {
+ /* periodically wakeup the device */
+ hmcfgusb_send_null_frame(dev, 1);
+ if (wait_for_h) {
+ memset(out, 0, sizeof(out));
+ out[0] = 'K';
+ hmcfgusb_send(dev, out, sizeof(out), 1);
+ }
+ }
+ }
+ }
+
+ if (reboot_seconds && ((dev->opened_at + reboot_seconds) <= time(NULL))) {
+ if (verbose) {
+ printf("HM-CFG-USB running since %lu seconds, rebooting now...\n",
+ time(NULL) - dev->opened_at);
}
+ hmcfgusb_enter_bootloader(dev);
}
}
return 1;
}
-static int socket_server(int port, int daemon)
+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 (daemon) {
+ 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;
memset(&sin, 0, sizeof(sin));
sin.sin_family = AF_INET;
sin.sin_port = htons(port);
- sin.sin_addr.s_addr = htonl(INADDR_ANY);
+ if (!iface) {
+ sin.sin_addr.s_addr = htonl(INADDR_ANY);
+ } else {
+ if (inet_pton(AF_INET, iface, &(sin.sin_addr.s_addr)) != 1) {
+ fprintf(stderr, "Can't convert IP %s, aborting!\n", iface);
+ return EXIT_FAILURE;
+ }
+ }
if (bind(sock, (struct sockaddr*)&sin, sizeof(sin)) == -1) {
perror("Can't bind socket");
client_addr = ntohl(csin.sin_addr.s_addr);
if (verbose) {
+ print_timestamp(stdout);
printf("Client %d.%d.%d.%d connected!\n",
(client_addr & 0xff000000) >> 24,
(client_addr & 0x00ff0000) >> 16,
(client_addr & 0x000000ff));
}
- comm(client, client, sock);
+ comm(client, client, sock, flags);
shutdown(client, SHUT_RDWR);
close(client);
if (verbose) {
+ print_timestamp(stdout);
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(void)
+static int interactive_server(int flags)
{
- if (!comm(STDIN_FILENO, STDOUT_FILENO, -1))
+ if (!comm(STDIN_FILENO, STDOUT_FILENO, -1, flags))
return EXIT_FAILURE;
return EXIT_SUCCESS;
{
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");
+ fprintf(stderr, "\t-D\t\tdebug mode\n");
+ fprintf(stderr, "\t-d\t\tdaemon mode\n");
+ fprintf(stderr, "\t-h\t\tthis help\n");
+ fprintf(stderr, "\t-i\t\tinteractive mode (connect HM-CFG-USB to terminal)\n");
+ fprintf(stderr, "\t-l ip\t\tlisten on given IP address only (for example 127.0.0.1)\n");
+ fprintf(stderr, "\t-P\t\tcreate PID file " PID_FILE " in daemon mode\n");
+ fprintf(stderr, "\t-p n\t\tlisten on port n (default: 1000)\n");
+ fprintf(stderr, "\t-r n\t\treboot HM-CFG-USB after n seconds (0: no reboot, default: %u)\n", DEFAULT_REBOOT_SECONDS);
+ fprintf(stderr, "\t hh:mm\treboot HM-CFG-USB daily at hh:mm\n");
+ fprintf(stderr, "\t-v\t\tverbose mode\n");
}
int main(int argc, char **argv)
{
int port = 1000;
+ char *iface = NULL;
int interactive = 0;
- int daemon = 0;
+ int flags = 0;
char *ep;
int opt;
+
+ reboot_seconds = DEFAULT_REBOOT_SECONDS;
- while((opt = getopt(argc, argv, "Ddhip:v")) != -1) {
+ while((opt = getopt(argc, argv, "DdhiPp:Rr:l:v")) != -1) {
switch (opt) {
case 'D':
debug = 1;
verbose = 1;
break;
case 'd':
- daemon = 1;
+ 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') {
exit(EXIT_FAILURE);
}
break;
+ case 'R':
+ fprintf(stderr, "-R is no longer needed (1s wakeup is default)\n");
+ break;
+ case 'r':
+ reboot_seconds = strtoul(optarg, &ep, 10);
+ if (*ep != '\0') {
+ if (*ep == ':') {
+ reboot_at_hour = reboot_seconds;
+ ep++;
+ reboot_at_minute = strtoul(ep, &ep, 10);
+ if (*ep != '\0') {
+ fprintf(stderr, "Can't parse reboot-time!\n");
+ exit(EXIT_FAILURE);
+ }
+
+ reboot_seconds = 0;
+ } else {
+ fprintf(stderr, "Can't parse reboot-timeout!\n");
+ exit(EXIT_FAILURE);
+ }
+ }
+ break;
+ case 'l':
+ iface = optarg;
+ break;
case 'v':
verbose = 1;
break;
}
if (interactive) {
- return interactive_server();
+ return interactive_server(flags);
} else {
- return socket_server(port, daemon);
+ return socket_server(iface, port, flags);
}
}
projects / hmcfgusb / blobdiff