mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-31 18:40:56 +00:00
unix: start udp port for each active hid/webusb interface
This commit is contained in:
Pavol Rusnak
parent
db71afca60
commit
1e03a5d554
171
embed/unix/usb.c
171
embed/unix/usb.c
@ -24,45 +24,59 @@ void __attribute__((noreturn)) __fatal_error(const char *expr, const char *msg,
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// and emulates HID/WebUSB interface TREZOR_UDP_IFACE
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// gracefully ignores all other USB interfaces
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#define TREZOR_UDP_IFACE 0
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#define TREZOR_UDP_PORT 21324
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#define USBD_MAX_NUM_INTERFACES 8
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#define TREZOR_UDP_PORT 21324
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static usb_iface_type_t emulator_usb_iface_type = USB_IFACE_TYPE_DISABLED;
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static int sock = -1;
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static struct sockaddr_in si_me, si_other;
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static socklen_t slen = 0;
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static struct {
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usb_iface_type_t type;
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int sock;
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struct sockaddr_in si_me, si_other;
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socklen_t slen;
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} usb_ifaces[USBD_MAX_NUM_INTERFACES];
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void usb_init(const usb_dev_info_t *dev_info) {
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(void)dev_info;
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for (int i = 0; i < USBD_MAX_NUM_INTERFACES; i++) {
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usb_ifaces[i].type = USB_IFACE_TYPE_DISABLED;
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usb_ifaces[i].sock = -1;
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memset(&usb_ifaces[i].si_me, 0, sizeof(struct sockaddr_in));
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memset(&usb_ifaces[i].si_other, 0, sizeof(struct sockaddr_in));
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usb_ifaces[i].slen = 0;
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}
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}
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void usb_deinit(void) {
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}
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void usb_start(void) {
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// start server only if interface 0 is either HID or WebUSB
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if (emulator_usb_iface_type == USB_IFACE_TYPE_HID || emulator_usb_iface_type == USB_IFACE_TYPE_WEBUSB) {
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sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
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ensure(sectrue * (sock >= 0), NULL);
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const char *ip = getenv("TREZOR_UDP_IP");
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const char *port = getenv("TREZOR_UDP_PORT");
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fcntl(sock, F_SETFL, O_NONBLOCK);
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// iterate interfaces
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for (int i = 0; i < USBD_MAX_NUM_INTERFACES; i++) {
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// skip if not HID or WebUSB interface
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if (usb_ifaces[i].type != USB_IFACE_TYPE_HID && usb_ifaces[i].type != USB_IFACE_TYPE_WEBUSB) {
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continue;
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}
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si_me.sin_family = AF_INET;
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const char *ip = getenv("TREZOR_UDP_IP");
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usb_ifaces[i].sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
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ensure(sectrue * (usb_ifaces[i].sock >= 0), NULL);
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fcntl(usb_ifaces[i].sock, F_SETFL, O_NONBLOCK);
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usb_ifaces[i].si_me.sin_family = AF_INET;
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if (ip) {
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si_me.sin_addr.s_addr = inet_addr(ip);
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usb_ifaces[i].si_me.sin_addr.s_addr = inet_addr(ip);
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} else {
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si_me.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
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usb_ifaces[i].si_me.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
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}
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const char *port = getenv("TREZOR_UDP_PORT");
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if (port) {
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si_me.sin_port = htons(atoi(port));
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usb_ifaces[i].si_me.sin_port = htons(atoi(port) + i);
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} else {
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si_me.sin_port = htons(TREZOR_UDP_PORT);
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usb_ifaces[i].si_me.sin_port = htons(TREZOR_UDP_PORT + i);
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}
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ensure(sectrue * (0 == bind(sock, (struct sockaddr*)&si_me, sizeof(si_me))), NULL);
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ensure(sectrue * (0 == bind(usb_ifaces[i].sock, (struct sockaddr*)&usb_ifaces[i].si_me, sizeof(struct sockaddr_in))), NULL);
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}
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}
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@ -70,121 +84,114 @@ void usb_stop(void) {
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}
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secbool usb_hid_add(const usb_hid_info_t *info) {
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// store iface type if it is the emulated iface
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if (info->iface_num == TREZOR_UDP_IFACE) {
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emulator_usb_iface_type = USB_IFACE_TYPE_HID;
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if (info->iface_num < USBD_MAX_NUM_INTERFACES && usb_ifaces[info->iface_num].type == USB_IFACE_TYPE_DISABLED) {
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usb_ifaces[info->iface_num].type = USB_IFACE_TYPE_HID;
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}
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return sectrue;
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}
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secbool usb_webusb_add(const usb_webusb_info_t *info) {
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// store iface type if it is the emulated iface
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if (info->iface_num == TREZOR_UDP_IFACE) {
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emulator_usb_iface_type = USB_IFACE_TYPE_WEBUSB;
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if (info->iface_num < USBD_MAX_NUM_INTERFACES && usb_ifaces[info->iface_num].type == USB_IFACE_TYPE_DISABLED) {
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usb_ifaces[info->iface_num].type = USB_IFACE_TYPE_WEBUSB;
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}
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return sectrue;
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}
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secbool usb_vcp_add(const usb_vcp_info_t *info) {
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if (info->iface_num < USBD_MAX_NUM_INTERFACES && usb_ifaces[info->iface_num].type == USB_IFACE_TYPE_DISABLED) {
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usb_ifaces[info->iface_num].type = USB_IFACE_TYPE_VCP;
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}
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return sectrue;
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}
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static secbool usb_emulated_can_read(uint8_t iface_num) {
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static secbool usb_emulated_poll(uint8_t iface_num, short dir) {
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struct pollfd fds[] = {
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{ sock, POLLIN, 0 },
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{ usb_ifaces[iface_num].sock, dir, 0 },
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};
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int r = poll(fds, 1, 0);
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return sectrue * (r > 0);
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}
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secbool usb_hid_can_read(uint8_t iface_num) {
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if (iface_num != TREZOR_UDP_IFACE || emulator_usb_iface_type != USB_IFACE_TYPE_HID) {
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return secfalse;
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}
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return usb_emulated_can_read(iface_num);
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}
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secbool usb_webusb_can_read(uint8_t iface_num) {
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if (iface_num != TREZOR_UDP_IFACE || emulator_usb_iface_type != USB_IFACE_TYPE_WEBUSB) {
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return secfalse;
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}
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return usb_emulated_can_read(iface_num);
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}
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static secbool usb_emulated_can_write(uint8_t iface_num) {
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struct pollfd fds[] = {
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{ sock, POLLOUT, 0 },
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};
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int r = poll(fds, 1, 0);
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return sectrue * (r > 0);
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}
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secbool usb_hid_can_write(uint8_t iface_num) {
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if (iface_num != TREZOR_UDP_IFACE || emulator_usb_iface_type != USB_IFACE_TYPE_HID) {
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return secfalse;
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}
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return usb_emulated_can_write(iface_num);
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}
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secbool usb_webusb_can_write(uint8_t iface_num) {
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if (iface_num != TREZOR_UDP_IFACE || emulator_usb_iface_type != USB_IFACE_TYPE_WEBUSB) {
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return secfalse;
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}
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return usb_emulated_can_write(iface_num);
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}
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static int usb_emulated_read(uint8_t iface_num, uint8_t *buf, uint32_t len) {
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struct sockaddr_in si;
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socklen_t sl = sizeof(si);
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ssize_t r = recvfrom(sock, buf, len, MSG_DONTWAIT, (struct sockaddr *)&si, &sl);
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ssize_t r = recvfrom(usb_ifaces[iface_num].sock, buf, len, MSG_DONTWAIT, (struct sockaddr *)&si, &sl);
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if (r < 0) {
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return r;
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}
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si_other = si;
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slen = sl;
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usb_ifaces[iface_num].si_other = si;
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usb_ifaces[iface_num].slen = sl;
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static const char *ping_req = "PINGPING";
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static const char *ping_resp = "PONGPONG";
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if (r == strlen(ping_req) && 0 == memcmp(ping_req, buf, strlen(ping_req))) {
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if (slen > 0) {
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sendto(sock, ping_resp, strlen(ping_resp), MSG_DONTWAIT, (const struct sockaddr *)&si_other, slen);
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if (usb_ifaces[iface_num].slen > 0) {
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sendto(usb_ifaces[iface_num].sock, ping_resp, strlen(ping_resp), MSG_DONTWAIT, (const struct sockaddr *)&usb_ifaces[iface_num].si_other, usb_ifaces[iface_num].slen);
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}
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return 0;
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}
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return r;
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}
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static int usb_emulated_write(uint8_t iface_num, const uint8_t *buf, uint32_t len)
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{
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ssize_t r = len;
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if (usb_ifaces[iface_num].slen > 0) {
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r = sendto(usb_ifaces[iface_num].sock, buf, len, MSG_DONTWAIT, (const struct sockaddr *)&usb_ifaces[iface_num].si_other, usb_ifaces[iface_num].slen);
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}
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return r;
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}
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secbool usb_hid_can_read(uint8_t iface_num) {
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if (iface_num >= USBD_MAX_NUM_INTERFACES || usb_ifaces[iface_num].type != USB_IFACE_TYPE_HID) {
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return secfalse;
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}
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return usb_emulated_poll(iface_num, POLLIN);
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}
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secbool usb_webusb_can_read(uint8_t iface_num) {
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if (iface_num >= USBD_MAX_NUM_INTERFACES || usb_ifaces[iface_num].type != USB_IFACE_TYPE_WEBUSB) {
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return secfalse;
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}
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return usb_emulated_poll(iface_num, POLLIN);
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}
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secbool usb_hid_can_write(uint8_t iface_num) {
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if (iface_num >= USBD_MAX_NUM_INTERFACES || usb_ifaces[iface_num].type != USB_IFACE_TYPE_HID) {
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return secfalse;
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}
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return usb_emulated_poll(iface_num, POLLOUT);
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}
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secbool usb_webusb_can_write(uint8_t iface_num) {
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if (iface_num >= USBD_MAX_NUM_INTERFACES || usb_ifaces[iface_num].type != USB_IFACE_TYPE_WEBUSB) {
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return secfalse;
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}
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return usb_emulated_poll(iface_num, POLLOUT);
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}
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int usb_hid_read(uint8_t iface_num, uint8_t *buf, uint32_t len) {
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if (iface_num != TREZOR_UDP_IFACE || emulator_usb_iface_type != USB_IFACE_TYPE_HID) {
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if (iface_num >= USBD_MAX_NUM_INTERFACES || usb_ifaces[iface_num].type != USB_IFACE_TYPE_HID) {
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return 0;
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}
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return usb_emulated_read(iface_num, buf, len);
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}
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int usb_webusb_read(uint8_t iface_num, uint8_t *buf, uint32_t len) {
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if (iface_num != TREZOR_UDP_IFACE || emulator_usb_iface_type != USB_IFACE_TYPE_WEBUSB) {
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if (iface_num >= USBD_MAX_NUM_INTERFACES || usb_ifaces[iface_num].type != USB_IFACE_TYPE_WEBUSB) {
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return 0;
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}
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return usb_emulated_read(iface_num, buf, len);
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}
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static int usb_emulated_write(uint8_t iface_num, const uint8_t *buf, uint32_t len)
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{
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ssize_t r = len;
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if (slen > 0) {
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r = sendto(sock, buf, len, MSG_DONTWAIT, (const struct sockaddr *)&si_other, slen);
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}
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return r;
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}
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int usb_hid_write(uint8_t iface_num, const uint8_t *buf, uint32_t len) {
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if (iface_num != TREZOR_UDP_IFACE || emulator_usb_iface_type != USB_IFACE_TYPE_HID) {
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if (iface_num >= USBD_MAX_NUM_INTERFACES || usb_ifaces[iface_num].type != USB_IFACE_TYPE_HID) {
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return 0;
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}
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return usb_emulated_write(iface_num, buf, len);
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}
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int usb_webusb_write(uint8_t iface_num, const uint8_t *buf, uint32_t len) {
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if (iface_num != TREZOR_UDP_IFACE || emulator_usb_iface_type != USB_IFACE_TYPE_WEBUSB) {
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if (iface_num >= USBD_MAX_NUM_INTERFACES || usb_ifaces[iface_num].type != USB_IFACE_TYPE_WEBUSB) {
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return 0;
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}
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return usb_emulated_write(iface_num, buf, len);
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