From e0a7146e36c5087367c9ef96a812e4fa48d98234 Mon Sep 17 00:00:00 2001 From: Michael Gernoth Date: Wed, 29 May 2013 17:49:34 +0200 Subject: [PATCH 1/1] simple tcp-server, barely able to communicate with fhem --- hmcfgusb.c | 15 +++-- hmland.c | 187 ++++++++++++++++++++++++++++++++++++++++++++--------- 2 files changed, 164 insertions(+), 38 deletions(-) diff --git a/hmcfgusb.c b/hmcfgusb.c index 955a65b..a73cd65 100644 --- a/hmcfgusb.c +++ b/hmcfgusb.c @@ -49,6 +49,7 @@ #define INTERFACE 0 static int quit = 0; +static int debug = 1; /* Not in all libusb-1.0 versions, so we have to roll our own :-( */ static char * usb_strerror(int e) @@ -142,13 +143,12 @@ int hmcfgusb_send(struct hmcfgusb_dev *usbdev, unsigned char* send_data, int len { int err; int cnt; - int ret; + if (debug) + hexdump(send_data, len, "< "); err = libusb_interrupt_transfer(usbdev->usb_devh, EP_OUT, send_data, len, &cnt, USB_TIMEOUT); if (err) { fprintf(stderr, "Can't send data: %s\n", usb_strerror(err)); - if (err == LIBUSB_ERROR_NO_DEVICE) - exit(EXIT_FAILURE); return 0; } @@ -156,13 +156,11 @@ int hmcfgusb_send(struct hmcfgusb_dev *usbdev, unsigned char* send_data, int len err = libusb_interrupt_transfer(usbdev->usb_devh, EP_OUT, send_data, 0, &cnt, USB_TIMEOUT); if (err) { fprintf(stderr, "Can't send data: %s\n", usb_strerror(err)); - if (err == LIBUSB_ERROR_NO_DEVICE) - exit(EXIT_FAILURE); return 0; } } - return ret; + return 1; } static struct libusb_transfer *hmcfgusb_prepare_int(libusb_device_handle *devh, libusb_transfer_cb_fn cb, void *data) @@ -226,9 +224,11 @@ static void LIBUSB_CALL hmcfgusb_interrupt(struct libusb_transfer *transfer) } } else { if (cb_data && cb_data->cb) { + if (debug) + hexdump(transfer->buffer, transfer->actual_length, "> "); cb_data->cb(transfer->buffer, transfer->actual_length, cb_data->data); } else { - hexdump(transfer->buffer, transfer->actual_length, "RECV> "); + hexdump(transfer->buffer, transfer->actual_length, "> "); } } @@ -417,6 +417,7 @@ void hmcfgusb_close(struct hmcfgusb_dev *dev) } libusb_close(dev->usb_devh); + free(dev->pfd); free(dev); libusb_exit(NULL); diff --git a/hmland.c b/hmland.c index 3366c8b..bccfa0d 100644 --- a/hmland.c +++ b/hmland.c @@ -29,47 +29,63 @@ #include #include #include +#include +#include +#include +#include #include #include "hexdump.h" #include "hmcfgusb.h" -void hmlan_format_out(uint8_t *buf, int buf_len, void *data) +static int impersonate_hmlanif = 0; + +static void hmlan_format_out(uint8_t *buf, int buf_len, void *data) { + char out[1024]; + char *pos; + int fd = *((int*)data); int len; int i; if (buf_len < 1) return; - //FIXME: Buffer here and write to fd_out - printf("%c", buf[0]); + memset(out, 0, sizeof(out)); + pos = out; + + *pos++ = buf[0]; switch(buf[0]) { case 'H': - buf[5]='L'; - buf[6]='A'; - buf[7]='N'; + if (impersonate_hmlanif) { + buf[5] = 'L'; + buf[6] = 'A'; + buf[7] = 'N'; + } len = buf[1]; for (i = 2; i < len + 2; i++) { - printf("%c", buf[i]); + *pos++=buf[i]; } - printf(",%02X%02X,", buf[i], - buf[i+1]); - i+=2; + snprintf(pos, 7, ",%02X%02X,", buf[i], buf[i+1]); + pos += 6; + + i += 2; len = buf[i]+i+1; i++; for (; i < len; i++) { - printf("%c", buf[i]); + *pos++=buf[i]; } - printf(","); + *pos++=','; len = i+12; for (; i < len; i++) { - printf("%02X", buf[i]); + snprintf(pos, 3, "%02X", buf[i]); + pos += 2; + switch(len-i) { case 10: case 7: case 3: - printf(","); + *pos++=','; break; default: break; @@ -80,15 +96,17 @@ void hmlan_format_out(uint8_t *buf, int buf_len, void *data) case 'E': len = 13 + buf[13]; for (i = 0; i < len; i++) { - if (i != 12) - printf("%02X", buf[1+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: - printf(","); + *pos++=','; break; default: break; @@ -98,15 +116,17 @@ void hmlan_format_out(uint8_t *buf, int buf_len, void *data) case 'R': len = 14 + buf[14]; for (i = 0; i < len; i++) { - if (i != 13) - printf("%02X", buf[1+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: - printf(","); + *pos++=','; break; default: break; @@ -119,15 +139,19 @@ void hmlan_format_out(uint8_t *buf, int buf_len, void *data) //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 ................ default: - for (i = 1; i < buf_len; i++) - printf("%02X", buf[i]); + for (i = 1; i < buf_len; i++) { + snprintf(pos, 3, "%02X", buf[i]); + pos += 2; + } hexdump(buf, buf_len, "Unknown> "); break; } - printf("\n"); + *pos++='\r'; + *pos++='\n'; + write(fd, out, pos-out); } -void hmlan_parse_in(int fd, void *data) +static int hmlan_parse_in(int fd, void *data) { struct hmcfgusb_dev *dev = data; unsigned char buf[1024]; @@ -181,23 +205,37 @@ void hmlan_parse_in(int fd, void *data) hmcfgusb_send(dev, send_buf, 1+(i/2), 1); } else if (r < 0) { perror("read"); + return r; + } else { + return 0; } + + return 1; } -int main(int argc, char **argv) +static int comm(int fd_in, int fd_out, int master_socket) { struct hmcfgusb_dev *dev; int quit = 0; - dev = hmcfgusb_init(hmlan_format_out, NULL); + dev = hmcfgusb_init(hmlan_format_out, &fd_out); if (!dev) { fprintf(stderr, "Can't initialize HM-CFG-USB!\n"); - exit(EXIT_FAILURE); + 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 (!hmcfgusb_add_pfd(dev, STDIN_FILENO, POLLIN)) { - fprintf(stderr, "Can't add stdin to pollfd!\n"); - exit(EXIT_FAILURE); + 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); @@ -207,7 +245,19 @@ int main(int argc, char **argv) fd = hmcfgusb_poll(dev, 3600); if (fd >= 0) { - hmlan_parse_in(fd, dev); + 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"); @@ -217,6 +267,81 @@ int main(int argc, char **argv) } hmcfgusb_close(dev); + return 1; +} + +static int socket_server(int port) +{ + struct sockaddr_in sin; + int sock; + int n; + + 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; + + memset(&csin, 0, sizeof(csin)); + csinlen = sizeof(csin); + client = accept(sock, (struct sockaddr*)&csin, &csinlen); + if (client == -1) { + perror("Couldn't accept client"); + continue; + } + + printf("Client accepted!\n"); + + comm(client, client, sock); + + shutdown(client, SHUT_RDWR); + close(client); + + printf("Connection closed!\n"); + + } + + return EXIT_SUCCESS; +} + +static int interactive_server(void) +{ + if (!comm(STDIN_FILENO, STDOUT_FILENO, -1)) + return EXIT_FAILURE; return EXIT_SUCCESS; } + +int main(int argc, char **argv) +{ + //return interactive_server(); + return socket_server(1234); +} -- 2.39.5