#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;
#define FLAG_COMMA_AFTER (1<<3)
#define FLAG_NL (1<<4)
#define FLAG_IGNORE_COMMAS (1<<5)
+#define FLAG_PERIODIC_WAKEUP (1<<6)
#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; }
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);
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 poll_timeout = 3600;
int quit = 0;
hmcfgusb_set_debug(debug);
}
}
- hmcfgusb_send(dev, (unsigned char*)"K", 1, 1);
+ if (flags & FLAG_PERIODIC_WAKEUP)
+ poll_timeout = 1;
+
+ 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, 3600);
+ fd = hmcfgusb_poll(dev, poll_timeout);
if (fd >= 0) {
if (fd == master_socket) {
int client;
if (errno) {
perror("hmcfgusb_poll");
quit = 1;
+ } else {
+ /* periodically wakeup the device */
+ hmcfgusb_send_null_frame(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 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");
+ perror("sigaction(SIGPIPE)");
exit(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 (!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");
(client_addr & 0x000000ff));
}
- comm(client, client, sock);
+ comm(client, client, sock, flags);
shutdown(client, SHUT_RDWR);
close(client);
(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, "\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-R\twakeup the device (and USB-bus) every second (fix for e.g. Raspberry Pi)\n");
fprintf(stderr, "\t-v\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;
- while((opt = getopt(argc, argv, "Ddhip:v")) != -1) {
+ while((opt = getopt(argc, argv, "DdhiPp:Rl: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':
+ flags |= FLAG_PERIODIC_WAKEUP;
+ 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