X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/hmcfgusb/blobdiff_plain/e0a7146e36c5087367c9ef96a812e4fa48d98234..867564c59f3e0687e581efe822365d3ef599c76f:/hmland.c diff --git a/hmland.c b/hmland.c index bccfa0d..38e4d6b 100644 --- a/hmland.c +++ b/hmland.c @@ -1,6 +1,6 @@ -/* HM-CFG-LAN emuldation for HM-CFG-USB +/* HM-CFG-LAN emulation for HM-CFG-USB * - * Copyright (c) 2013 Michael Gernoth + * Copyright (c) 2013-16 Michael Gernoth * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to @@ -25,36 +25,241 @@ #include #include #include +#include #include #include #include +#include #include #include #include +#include +#include +#include #include #include #include +#include "version.h" #include "hexdump.h" #include "hmcfgusb.h" +#include "util.h" + +#define PID_FILE "/var/run/hmland.pid" + +#define POLL_TIMEOUT_MS 250 /* Wake up device/bus at least once every 250ms */ +#define DEFAULT_REBOOT_SECONDS 86400 +#define LAN_READ_CHUNK_SIZE 2048 +/* Don't allow remote clients to consume all of our memory */ +#define LAN_MAX_LINE_LENGTH 4096 +#define LAN_MAX_BUF_LENGTH 1048576 + +extern char *optarg; static int impersonate_hmlanif = 0; +static int debug = 0; +static int verbose = 0; +static FILE *logfile = NULL; +static int reboot_seconds = 0; +static int reboot_at_hour = -1; +static int reboot_at_minute = -1; +static int reboot_set = 0; +static uint8_t *lan_read_buf = NULL; +static int lan_read_buflen = 0; +static char *serial = NULL; + +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 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 void hmlan_format_out(uint8_t *buf, int buf_len, void *data) +static void print_timestamp(FILE *f) { - char out[1024]; - char *pos; - int fd = *((int*)data); - int len; + 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 void write_log(char *buf, int len, char *fmt, ...) +{ + va_list ap; int i; - if (buf_len < 1) + if ((!logfile) && (!verbose)) return; + if (logfile) + print_timestamp(logfile); + if (verbose) + print_timestamp(stdout); + + if (fmt) { + if (logfile) { + va_start(ap, fmt); + vfprintf(logfile, fmt, ap); + va_end(ap); + } + if (verbose) { + va_start(ap, fmt); + vprintf(fmt, ap); + va_end(ap); + } + } + + if (buf && len) { + for (i = 0; i < len; i++) { + if (logfile) + fprintf(logfile, "%c", buf[i]); + if (verbose) + printf("%c", buf[i]); + } + if (logfile) + fprintf(logfile, "\n"); + if (verbose) + printf("\n"); + } + if (logfile) + fflush(logfile); +} + +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) { + CHECK_AVAIL(len); + CHECK_SPACE(len*2); + for (i = 0; i < len; i++) { + **outpos = nibble_to_ascii(((**inpos) & 0xf0) >> 4); + *outpos += 1; + **outpos = nibble_to_ascii(((**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 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; + uint16_t version; + int fd = *((int*)data); + int w; + + if (buf_len < 1) + return 1; + memset(out, 0, sizeof(out)); - pos = out; + outpos = out; + inpos = buf; - *pos++ = buf[0]; + format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, 0); switch(buf[0]) { case 'H': if (impersonate_hmlanif) { @@ -62,149 +267,230 @@ static void hmlan_format_out(uint8_t *buf, int buf_len, void *data) buf[6] = 'A'; buf[7] = 'N'; } - len = buf[1]; - for (i = 2; i < len + 2; i++) { - *pos++=buf[i]; - } - snprintf(pos, 7, ",%02X%02X,", buf[i], buf[i+1]); - pos += 6; - - i += 2; - len = buf[i]+i+1; - i++; - for (; i < len; i++) { - *pos++=buf[i]; + format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 0, FLAG_LENGTH_BYTE); + version = inpos[0] << 8; + version |= inpos[1]; + 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); + if (version < 0x03c7) { + format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 2, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE | FLAG_NL); + } else { + 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)), 1, FLAG_FORMAT_HEX | FLAG_COMMA_BEFORE | FLAG_NL); } - *pos++=','; - len = i+12; - for (; i < len; i++) { - snprintf(pos, 3, "%02X", buf[i]); - pos += 2; - - switch(len-i) { - case 10: - case 7: - case 3: - *pos++=','; - break; - default: - break; + + if (!reboot_set) { + int new_reboot_seconds; + + if (version < 0x03c7) { + new_reboot_seconds = DEFAULT_REBOOT_SECONDS; + } else { + new_reboot_seconds = 0; } + + if (verbose && new_reboot_seconds && (reboot_seconds != new_reboot_seconds)) + printf("Rebooting in %u seconds due to old firmware (0.%d)\n", + new_reboot_seconds, version); + + reboot_seconds = new_reboot_seconds; } break; case 'E': - len = 13 + buf[13]; - for (i = 0; i < len; i++) { - if (i != 12) { - snprintf(pos, 3, "%02X", buf[i+1]); - pos += 2; - } - switch(i) { - case 2: - case 4: - case 8: - case 9: - case 11: - *pos++=','; - break; - default: - break; - } - } + 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': - len = 14 + buf[14]; - for (i = 0; i < len; i++) { - if (i != 13) { - snprintf(pos, 3, "%02X", buf[i+1]); - pos += 2; - } - switch(i) { - case 3: - case 5: - case 9: - case 10: - case 12: - *pos++=','; - break; - default: - break; - } - } + 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': - //HM> 0x0000: 49 00 00 00 00 55 53 42 2d 49 46 03 bc 0a 4a 45 I....USB-IF...JE - //HM> 0x0010: 51 30 35 33 35 31 32 32 1d b1 55 68 ea 13 00 14 Q0535122..Uh.... - //HM> 0x0020: 9f a6 00 03 00 00 00 00 00 00 00 00 00 00 00 00 ................ - //HM> 0x0030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ + 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; + case 'G': + format_part_out(&inpos, (buf_len-(inpos-buf)), &outpos, (sizeof(out)-(outpos-out)), 1, FLAG_FORMAT_HEX | FLAG_NL); + + break; default: - for (i = 1; i < buf_len; i++) { - snprintf(pos, 3, "%02X", buf[i]); - pos += 2; - } + 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; } - *pos++='\r'; - *pos++='\n'; - write(fd, out, pos-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; + } + + write_log((char*)out, outpos-out-2, "LAN < "); + + 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) { + write_log(curr_rx->rx, curr_rx->len-2, "LAN < "); + + 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) +static int hmlan_parse_one(uint8_t *cmd, int last, void *data) { struct hmcfgusb_dev *dev = data; - unsigned char buf[1024]; - unsigned char send_buf[0x40]; //FIXME!!! - char tmp[3]; - int i; + uint8_t out[0x40]; //FIXME!!! + uint8_t *outpos; + uint8_t *inpos = cmd; + + outpos = out; + + if (last == 0) + return 1; + + write_log((char*)cmd, last, "LAN > "); + + memset(out, 0, sizeof(out)); + *outpos++ = *inpos++; + + switch(*cmd) { + case 'S': + parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), 0); + parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), 0); + parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), 0); + parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), 0); + parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), 0); + parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), FLAG_LENGTH_BYTE); + break; + case 'Y': + parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), 0); + parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), 0); + parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), FLAG_LENGTH_BYTE); + break; + case '+': + parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), 0); + parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), 0); + parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), 0); + parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), FLAG_LENGTH_BYTE); + default: + parse_part_in(&inpos, (last-(inpos-cmd)), &outpos, (sizeof(out)-(outpos-out)), FLAG_IGNORE_COMMAS); + break; + } + + hmcfgusb_send(dev, out, sizeof(out), 1); + + return 1; +} + +static int hmlan_parse_in(int fd, void *data) +{ + uint8_t *newbuf; int r; + int i; - r = read(fd, buf, sizeof(buf)); + newbuf = realloc(lan_read_buf, lan_read_buflen + LAN_READ_CHUNK_SIZE); + if (!newbuf) { + perror("realloc"); + return 0; + } + lan_read_buf = newbuf; + r = read(fd, lan_read_buf + lan_read_buflen, LAN_READ_CHUNK_SIZE); if (r > 0) { - int cnt; - - memset(send_buf, 0, sizeof(send_buf)); - for (i = 0; i < r; i++) { - if ((buf[i] == 0x0a) || - (buf[i] == 0x0d)) { - r = i; - break; - } + lan_read_buflen += r; + if (lan_read_buflen > LAN_MAX_BUF_LENGTH) { + if (verbose) + printf("Our buffer is bigger than %d bytes (%d bytes), closing connection!\n", LAN_MAX_BUF_LENGTH, lan_read_buflen); + return -1; } - - send_buf[0] = buf[0]; - - cnt = 0; - for (i = 1; i < r; i++) { - if (buf[i] == ',') { - switch (buf[0]) { - case 'S': - if (cnt == 4) { - /* Add msg length */ - memmove(buf+i+2, buf+i+1, r-(i+1)); - snprintf(tmp, 3, "%02X", (int)((r-(i+1))/2)); - memcpy(buf+i, tmp, 2); - r++; - break; - } - default: - memmove(buf+i, buf+i+1, r-(i+1)); - r--; - break; + while(lan_read_buflen > 0) { + int found = 0; + + for (i = 0; i < lan_read_buflen; i++) { + if ((lan_read_buf[i] == '\r') || (lan_read_buf[i] == '\n')) { + if (i > 0) + hmlan_parse_one(lan_read_buf, i, data); + memmove(lan_read_buf, lan_read_buf + i + 1, lan_read_buflen - (i + 1)); + lan_read_buflen -= (i + 1); + found = 1; + break; + } + if (i > LAN_MAX_LINE_LENGTH) { + if (verbose) + printf("Client sent more than %d bytes without newline, closing connection!\n", LAN_MAX_LINE_LENGTH); + return -1; } - cnt++; } + if (!found) + break; + newbuf = realloc(lan_read_buf, lan_read_buflen); + if (lan_read_buflen && !newbuf) { + perror("realloc"); + return 0; + } + lan_read_buf = newbuf; } - - memset(tmp, 0, sizeof(tmp)); - for (i = 1; i < r; i+=2) { - memcpy(tmp, buf + i, 2); - send_buf[1+(i/2)] = strtoul(tmp, NULL, 16); - } - hmcfgusb_send(dev, send_buf, 1+(i/2), 1); } else if (r < 0) { - perror("read"); + if (errno != ECONNRESET) + perror("read"); return r; } else { return 0; @@ -213,17 +499,57 @@ static int hmlan_parse_in(int fd, void *data) 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; - dev = hmcfgusb_init(hmlan_format_out, &fd_out); + hmcfgusb_set_debug(debug); + + dev = hmcfgusb_init(hmlan_format_out, &fd_out, serial); if (!dev) { fprintf(stderr, "Can't initialize HM-CFG-USB!\n"); 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); @@ -238,12 +564,16 @@ static int comm(int fd_in, int fd_out, int master_socket) } } - 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, POLL_TIMEOUT_MS); if (fd >= 0) { if (fd == master_socket) { int client; @@ -260,9 +590,27 @@ static int comm(int fd_in, int fd_out, int master_socket) } } 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); } } @@ -270,13 +618,96 @@ static int comm(int fd_in, int fd_out, int master_socket) return 1; } -static int socket_server(int port) +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); + } + } - impersonate_hmlanif = 1; + 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); + } sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP); if (sock == -1) { @@ -293,7 +724,14 @@ static int socket_server(int port) 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"); @@ -309,6 +747,7 @@ static int socket_server(int port) struct sockaddr_in csin; socklen_t csinlen; int client; + in_addr_t client_addr; memset(&csin, 0, sizeof(csin)); csinlen = sizeof(csin); @@ -318,30 +757,155 @@ static int socket_server(int port) continue; } - printf("Client accepted!\n"); + /* FIXME: getnameinfo... */ + client_addr = ntohl(csin.sin_addr.s_addr); + + write_log(NULL, 0, "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); + comm(client, client, sock, flags); shutdown(client, SHUT_RDWR); close(client); - printf("Connection closed!\n"); - + if (lan_read_buf) + free(lan_read_buf); + lan_read_buf = NULL; + lan_read_buflen = 0; + + write_log(NULL, 0, "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; } +void hmlan_syntax(char *prog) +{ + fprintf(stderr, "Syntax: %s options\n\n", prog); + fprintf(stderr, "Possible options:\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\tpretend to be HM-LAN-IF for compatibility with client-software (previous default)\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-L logfile\tlog network-communication to logfile\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 if FW < 0.967, 0 otherwise)\n", DEFAULT_REBOOT_SECONDS); + fprintf(stderr, "\t hh:mm\treboot HM-CFG-USB daily at hh:mm\n"); + fprintf(stderr, "\t-S serial\tuse HM-CFG-USB with given serial (for multiple hmland instances)\n"); + fprintf(stderr, "\t-v\t\tverbose mode\n"); + fprintf(stderr, "\t-V\t\tshow version (" VERSION ")\n"); + +} + int main(int argc, char **argv) { - //return interactive_server(); - return socket_server(1234); + int port = 1000; + char *iface = NULL; + int interactive = 0; + int flags = 0; + char *ep; + int opt; + + while((opt = getopt(argc, argv, "DdhIiPp:Rr:l:L:S:vV")) != -1) { + switch (opt) { + case 'D': + debug = 1; + verbose = 1; + break; + case 'd': + flags |= FLAG_DAEMON; + break; + case 'I': + impersonate_hmlanif = 1; + 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 '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); + } + } + reboot_set = 1; + break; + case 'l': + iface = optarg; + break; + case 'L': + logfile = fopen(optarg, "a"); + if (!logfile) { + perror("fopen(logfile)"); + exit(EXIT_FAILURE); + } + break; + case 'S': + serial = optarg; + break; + case 'v': + verbose = 1; + break; + case 'V': + printf("hmland " VERSION "\n"); + printf("Copyright (c) 2013-16 Michael Gernoth\n\n"); + exit(EXIT_SUCCESS); + 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); + } }