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-rw-r--r--daemon/device.c781
1 files changed, 0 insertions, 781 deletions
diff --git a/daemon/device.c b/daemon/device.c
deleted file mode 100644
index 8c786a7..0000000
--- a/daemon/device.c
+++ /dev/null
@@ -1,781 +0,0 @@
-/*
- usbmuxd - iPhone/iPod Touch USB multiplex server daemon
-
-Copyright (C) 2009 Hector Martin "marcan" <hector@marcansoft.com>
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 2 or version 3.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
-
-*/
-
-#define _BSD_SOURCE
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <sys/time.h>
-#include <netinet/in.h>
-#include <netinet/tcp.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdint.h>
-#include <inttypes.h>
-#include "device.h"
-#include "client.h"
-#include "usb.h"
-#include "log.h"
-
-int next_device_id;
-
-#define DEV_MRU 65536
-
-#define CONN_INBUF_SIZE 262144
-#define CONN_OUTBUF_SIZE 65536
-
-#define ACK_TIMEOUT 30
-
-enum mux_protocol {
- MUX_PROTO_VERSION = 0,
- MUX_PROTO_TCP = IPPROTO_TCP,
-};
-
-enum mux_dev_state {
- MUXDEV_INIT, // sent version packet
- MUXDEV_ACTIVE, // received version packet, active
- MUXDEV_DEAD // dead
-};
-
-enum mux_conn_state {
- CONN_CONNECTING, // SYN
- CONN_CONNECTED, // SYN/SYNACK/ACK -> active
- CONN_REFUSED, // RST received during SYN
- CONN_DYING, // RST received
- CONN_DEAD // being freed; used to prevent infinite recursion between client<->device freeing
-};
-
-struct mux_header
-{
- uint32_t protocol;
- uint32_t length;
-};
-
-struct version_header
-{
- uint32_t major;
- uint32_t minor;
- uint32_t padding;
-};
-
-struct mux_device;
-
-#define CONN_ACK_PENDING 1
-
-struct mux_connection
-{
- struct mux_device *dev;
- struct mux_client *client;
- enum mux_conn_state state;
- uint16_t sport, dport;
- uint32_t tx_seq, tx_ack, tx_acked, tx_win;
- uint32_t rx_seq, rx_recvd, rx_ack, rx_win;
- uint32_t max_payload;
- uint32_t sendable;
- int flags;
- unsigned char *ib_buf;
- uint32_t ib_size;
- uint32_t ib_capacity;
- unsigned char *ob_buf;
- uint32_t ob_capacity;
- short events;
- uint64_t last_ack_time;
-};
-
-struct mux_device
-{
- struct usb_device *usbdev;
- int id;
- enum mux_dev_state state;
- struct collection connections;
- uint16_t next_sport;
- unsigned char *pktbuf;
- uint32_t pktlen;
-};
-
-static struct collection device_list;
-
-uint64_t mstime64(void)
-{
- struct timeval tv;
- gettimeofday(&tv, NULL);
- return tv.tv_sec * 1000 + tv.tv_usec / 1000;
-}
-
-static int get_next_device_id(void)
-{
- while(1) {
- int ok = 1;
- FOREACH(struct mux_device *dev, &device_list) {
- if(dev->id == next_device_id) {
- next_device_id++;
- ok = 0;
- break;
- }
- } ENDFOREACH
- if(ok)
- return next_device_id++;
- }
-}
-
-static int send_packet(struct mux_device *dev, enum mux_protocol proto, void *header, const void *data, int length)
-{
- unsigned char *buffer;
- int hdrlen;
- int res;
-
- switch(proto) {
- case MUX_PROTO_VERSION:
- hdrlen = sizeof(struct version_header);
- break;
- case MUX_PROTO_TCP:
- hdrlen = sizeof(struct tcphdr);
- break;
- default:
- usbmuxd_log(LL_ERROR, "Invalid protocol %d for outgoing packet (dev %d hdr %p data %p len %d)", proto, dev->id, header, data, length);
- return -1;
- }
- usbmuxd_log(LL_SPEW, "send_packet(%d, 0x%x, %p, %p, %d)", dev->id, proto, header, data, length);
-
- int total = sizeof(struct mux_header) + hdrlen + length;
-
- if(total > USB_MTU) {
- usbmuxd_log(LL_ERROR, "Tried to send packet larger than USB MTU (hdr %d data %d total %d) to device %d", hdrlen, length, total, dev->id);
- return -1;
- }
-
- buffer = malloc(total);
- struct mux_header *mhdr = (struct mux_header *)buffer;
- mhdr->protocol = htonl(proto);
- mhdr->length = htonl(total);
- memcpy(buffer + sizeof(struct mux_header), header, hdrlen);
- if(data && length)
- memcpy(buffer + sizeof(struct mux_header) + hdrlen, data, length);
-
- if((res = usb_send(dev->usbdev, buffer, total)) < 0) {
- usbmuxd_log(LL_ERROR, "usb_send failed while sending packet (len %d) to device %d: %d", total, dev->id, res);
- free(buffer);
- return res;
- }
- return total;
-}
-
-static uint16_t find_sport(struct mux_device *dev)
-{
- if(collection_count(&dev->connections) >= 65535)
- return 0; //insanity
-
- while(1) {
- int ok = 1;
- FOREACH(struct mux_connection *conn, &dev->connections) {
- if(dev->next_sport == conn->sport) {
- dev->next_sport++;
- ok = 0;
- break;
- }
- } ENDFOREACH
- if(ok)
- return dev->next_sport++;
- }
-}
-
-static int send_anon_rst(struct mux_device *dev, uint16_t sport, uint16_t dport, uint32_t ack)
-{
- struct tcphdr th;
- memset(&th, 0, sizeof(th));
- th.th_sport = htons(sport);
- th.th_dport = htons(dport);
- th.th_ack = htonl(ack);
- th.th_flags = TH_RST;
- th.th_off = sizeof(th) / 4;
-
- usbmuxd_log(LL_DEBUG, "[OUT] dev=%d sport=%d dport=%d flags=0x%x", dev->id, sport, dport, th.th_flags);
-
- int res = send_packet(dev, MUX_PROTO_TCP, &th, NULL, 0);
- return res;
-}
-
-static int send_tcp(struct mux_connection *conn, uint8_t flags, const unsigned char *data, int length)
-{
- struct tcphdr th;
- memset(&th, 0, sizeof(th));
- th.th_sport = htons(conn->sport);
- th.th_dport = htons(conn->dport);
- th.th_seq = htonl(conn->tx_seq);
- th.th_ack = htonl(conn->tx_ack);
- th.th_flags = flags;
- th.th_off = sizeof(th) / 4;
- th.th_win = htons(conn->tx_win >> 8);
-
- usbmuxd_log(LL_DEBUG, "[OUT] dev=%d sport=%d dport=%d seq=%d ack=%d flags=0x%x window=%d[%d] len=%d",
- conn->dev->id, conn->sport, conn->dport, conn->tx_seq, conn->tx_ack, flags, conn->tx_win, conn->tx_win >> 8, length);
-
- int res = send_packet(conn->dev, MUX_PROTO_TCP, &th, data, length);
- if(res >= 0) {
- conn->tx_acked = conn->tx_ack;
- conn->last_ack_time = mstime64();
- conn->flags &= ~CONN_ACK_PENDING;
- }
- return res;
-}
-
-static void connection_teardown(struct mux_connection *conn)
-{
- int res;
- if(conn->state == CONN_DEAD)
- return;
- usbmuxd_log(LL_DEBUG, "connection_teardown dev %d sport %d dport %d", conn->dev->id, conn->sport, conn->dport);
- if(conn->dev->state != MUXDEV_DEAD && conn->state != CONN_DYING && conn->state != CONN_REFUSED) {
- res = send_tcp(conn, TH_RST, NULL, 0);
- if(res < 0)
- usbmuxd_log(LL_ERROR, "Error sending TCP RST to device %d (%d->%d)", conn->dev->id, conn->sport, conn->dport);
- }
- if(conn->client) {
- if(conn->state == CONN_REFUSED || conn->state == CONN_CONNECTING) {
- client_notify_connect(conn->client, RESULT_CONNREFUSED);
- } else {
- conn->state = CONN_DEAD;
- client_close(conn->client);
- }
- }
- if(conn->ib_buf)
- free(conn->ib_buf);
- if(conn->ob_buf)
- free(conn->ob_buf);
- collection_remove(&conn->dev->connections, conn);
- free(conn);
-}
-
-int device_start_connect(int device_id, uint16_t dport, struct mux_client *client)
-{
- struct mux_device *dev = NULL;
- FOREACH(struct mux_device *cdev, &device_list) {
- if(cdev->id == device_id) {
- dev = cdev;
- break;
- }
- } ENDFOREACH
- if(!dev) {
- usbmuxd_log(LL_WARNING, "Attempted to connect to nonexistent device %d", device_id);
- return -RESULT_BADDEV;
- }
-
- uint16_t sport = find_sport(dev);
- if(!sport) {
- usbmuxd_log(LL_WARNING, "Unable to allocate port for device %d", device_id);
- return -RESULT_BADDEV;
- }
-
- struct mux_connection *conn;
- conn = malloc(sizeof(struct mux_connection));
- memset(conn, 0, sizeof(struct mux_connection));
-
- conn->dev = dev;
- conn->client = client;
- conn->state = CONN_CONNECTING;
- conn->sport = sport;
- conn->dport = dport;
- conn->tx_seq = 0;
- conn->tx_ack = 0;
- conn->tx_acked = 0;
- conn->tx_win = 131072;
- conn->rx_recvd = 0;
- conn->flags = 0;
- conn->max_payload = USB_MTU - sizeof(struct mux_header) - sizeof(struct tcphdr);
-
- conn->ob_buf = malloc(CONN_OUTBUF_SIZE);
- conn->ob_capacity = CONN_OUTBUF_SIZE;
- conn->ib_buf = malloc(CONN_INBUF_SIZE);
- conn->ib_capacity = CONN_INBUF_SIZE;
- conn->ib_size = 0;
-
- int res;
-
- res = send_tcp(conn, TH_SYN, NULL, 0);
- if(res < 0) {
- usbmuxd_log(LL_ERROR, "Error sending TCP SYN to device %d (%d->%d)", dev->id, sport, dport);
- free(conn);
- return -RESULT_CONNREFUSED; //bleh
- }
- collection_add(&dev->connections, conn);
- return 0;
-}
-
-static void update_connection(struct mux_connection *conn)
-{
- uint32_t sent = conn->tx_seq - conn->rx_ack;
-
- if(conn->rx_win > sent)
- conn->sendable = conn->rx_win - sent;
- else
- conn->sendable = 0;
-
- if(conn->sendable > conn->ob_capacity)
- conn->sendable = conn->ob_capacity;
- if(conn->sendable > conn->max_payload)
- conn->sendable = conn->max_payload;
-
- if(conn->sendable > 0)
- conn->events |= POLLIN;
- else
- conn->events &= ~POLLIN;
-
- if(conn->ib_size)
- conn->events |= POLLOUT;
- else
- conn->events &= ~POLLOUT;
-
- if(conn->tx_acked != conn->tx_ack)
- conn->flags |= CONN_ACK_PENDING;
- else
- conn->flags &= ~CONN_ACK_PENDING;
-
- usbmuxd_log(LL_SPEW, "update_connection: sendable %d, events %d, flags %d", conn->sendable, conn->events, conn->flags);
- client_set_events(conn->client, conn->events);
-}
-
-void device_client_process(int device_id, struct mux_client *client, short events)
-{
- struct mux_connection *conn = NULL;
- FOREACH(struct mux_device *dev, &device_list) {
- if(dev->id == device_id) {
- FOREACH(struct mux_connection *lconn, &dev->connections) {
- if(lconn->client == client) {
- conn = lconn;
- break;
- }
- } ENDFOREACH
- break;
- }
- } ENDFOREACH
-
- if(!conn) {
- usbmuxd_log(LL_WARNING, "Could not find connection for device %d client %p", device_id, client);
- return;
- }
- usbmuxd_log(LL_SPEW, "device_client_process (%d)", events);
-
- int res;
- int size;
- if(events & POLLOUT) {
- size = client_write(conn->client, conn->ib_buf, conn->ib_size);
- if(size <= 0) {
- usbmuxd_log(LL_DEBUG, "error writing to client (%d)", size);
- connection_teardown(conn);
- return;
- }
- conn->tx_ack += size;
- if(size == conn->ib_size) {
- conn->ib_size = 0;
- } else {
- conn->ib_size -= size;
- memmove(conn->ib_buf, conn->ib_buf + size, conn->ib_size);
- }
- }
- if(events & POLLIN) {
- size = client_read(conn->client, conn->ob_buf, conn->sendable);
- if(size <= 0) {
- usbmuxd_log(LL_DEBUG, "error reading from client (%d)", size);
- connection_teardown(conn);
- return;
- }
- res = send_tcp(conn, TH_ACK, conn->ob_buf, size);
- if(res < 0) {
- connection_teardown(conn);
- return;
- }
- conn->tx_seq += size;
- }
-
- update_connection(conn);
-}
-
-static void connection_device_input(struct mux_connection *conn, unsigned char *payload, uint32_t payload_length)
-{
- if((conn->ib_size + payload_length) > conn->ib_capacity) {
- usbmuxd_log(LL_ERROR, "Input buffer overflow on device %d connection %d->%d (space=%d, payload=%d)", conn->dev->id, conn->sport, conn->dport, conn->ib_capacity-conn->ib_size, payload_length);
- connection_teardown(conn);
- return;
- }
- memcpy(conn->ib_buf + conn->ib_size, payload, payload_length);
- conn->ib_size += payload_length;
- conn->rx_recvd += payload_length;
- update_connection(conn);
-}
-
-void device_abort_connect(int device_id, struct mux_client *client)
-{
- FOREACH(struct mux_device *dev, &device_list) {
- if(dev->id == device_id) {
- FOREACH(struct mux_connection *conn, &dev->connections) {
- if(conn->client == client) {
- connection_teardown(conn);
- return;
- }
- } ENDFOREACH
- usbmuxd_log(LL_WARNING, "Attempted to abort for nonexistent connection for device %d", device_id);
- return;
- }
- } ENDFOREACH
- usbmuxd_log(LL_WARNING, "Attempted to abort connection for nonexistent device %d", device_id);
-}
-
-static void device_version_input(struct mux_device *dev, struct version_header *vh)
-{
- if(dev->state != MUXDEV_INIT) {
- usbmuxd_log(LL_WARNING, "Version packet from already initialized device %d", dev->id);
- return;
- }
- vh->major = ntohl(vh->major);
- vh->minor = ntohl(vh->minor);
- if(vh->major != 1 || vh->minor != 0) {
- usbmuxd_log(LL_ERROR, "Device %d has unknown version %d.%d\n", dev->id, vh->major, vh->minor);
- collection_remove(&device_list, dev);
- free(dev);
- return;
- }
- usbmuxd_log(LL_NOTICE, "Connected to v%d.%d device %d on location 0x%x with serial number %s", vh->major, vh->minor, dev->id, usb_get_location(dev->usbdev), usb_get_serial(dev->usbdev));
- dev->state = MUXDEV_ACTIVE;
- collection_init(&dev->connections);
- struct device_info info;
- info.id = dev->id;
- info.location = usb_get_location(dev->usbdev);
- info.serial = usb_get_serial(dev->usbdev);
- info.pid = usb_get_pid(dev->usbdev);
- client_device_add(&info);
-}
-
-static void device_tcp_input(struct mux_device *dev, struct tcphdr *th, unsigned char *payload, uint32_t payload_length)
-{
- uint16_t sport = ntohs(th->th_dport);
- uint16_t dport = ntohs(th->th_sport);
- struct mux_connection *conn = NULL;
-
- usbmuxd_log(LL_DEBUG, "[IN] dev=%d sport=%d dport=%d seq=%d ack=%d flags=0x%x window=%d[%d] len=%d",
- dev->id, dport, sport, ntohl(th->th_seq), ntohl(th->th_ack), th->th_flags, ntohs(th->th_win) << 8, ntohs(th->th_win), payload_length);
-
- if(dev->state != MUXDEV_ACTIVE) {
- usbmuxd_log(LL_ERROR, "Received TCP packet from device %d but the device isn't active yet, discarding\n", dev->id);
- return;
- }
-
- FOREACH(struct mux_connection *lconn, &dev->connections) {
- if(lconn->sport == sport && lconn->dport == dport) {
- conn = lconn;
- break;
- }
- } ENDFOREACH
-
- if(!conn) {
- usbmuxd_log(LL_INFO, "No connection for device %d incoming packet %d->%d", dev->id, dport, sport);
- if(!(th->th_flags & TH_RST)) {
- if(send_anon_rst(dev, sport, dport, ntohl(th->th_seq)) < 0)
- usbmuxd_log(LL_ERROR, "Error sending TCP RST to device %d (%d->%d)", conn->dev->id, sport, dport);
- }
- return;
- }
-
- conn->rx_seq = ntohl(th->th_seq);
- conn->rx_ack = ntohl(th->th_ack);
- conn->rx_win = ntohs(th->th_win) << 8;
-
- if(th->th_flags & TH_RST) {
- char *buf = malloc(payload_length+1);
- memcpy(buf, payload, payload_length);
- if(payload_length && (buf[payload_length-1] == '\n'))
- buf[payload_length-1] = 0;
- buf[payload_length] = 0;
- usbmuxd_log(LL_DEBUG, "RST reason: %s", buf);
- free(buf);
- }
-
- if(conn->state == CONN_CONNECTING) {
- if(th->th_flags != (TH_SYN|TH_ACK)) {
- if(th->th_flags & TH_RST)
- conn->state = CONN_REFUSED;
- usbmuxd_log(LL_INFO, "Connection refused by device %d (%d->%d)", dev->id, sport, dport);
- connection_teardown(conn); //this also sends the notification to the client
- } else {
- conn->tx_seq++;
- conn->tx_ack++;
- conn->rx_recvd = conn->rx_seq;
- if(send_tcp(conn, TH_ACK, NULL, 0) < 0) {
- usbmuxd_log(LL_ERROR, "Error sending TCP ACK to device %d (%d->%d)", dev->id, sport, dport);
- connection_teardown(conn);
- return;
- }
- conn->state = CONN_CONNECTED;
- if(client_notify_connect(conn->client, RESULT_OK) < 0) {
- conn->client = NULL;
- connection_teardown(conn);
- }
- update_connection(conn);
- }
- } else if(conn->state == CONN_CONNECTED) {
- if(th->th_flags != TH_ACK) {
- usbmuxd_log(LL_INFO, "Connection reset by device %d (%d->%d)", dev->id, sport, dport);
- if(th->th_flags & TH_RST)
- conn->state = CONN_DYING;
- connection_teardown(conn);
- } else {
- connection_device_input(conn, payload, payload_length);
- }
- }
-}
-
-void device_data_input(struct usb_device *usbdev, unsigned char *buffer, uint32_t length)
-{
- struct mux_device *dev = NULL;
- FOREACH(struct mux_device *tdev, &device_list) {
- if(tdev->usbdev == usbdev) {
- dev = tdev;
- break;
- }
- } ENDFOREACH
- if(!dev) {
- usbmuxd_log(LL_WARNING, "Cannot find device entry for RX input from USB device %p on location 0x%x", usbdev, usb_get_location(usbdev));
- return;
- }
-
- if(!length)
- return;
-
- // sanity check (should never happen with current USB implementation)
- if((length > USB_MRU) || (length > DEV_MRU)) {
- usbmuxd_log(LL_ERROR, "Too much data received from USB (%d), file a bug", length);
- return;
- }
-
- usbmuxd_log(LL_SPEW, "Mux data input for device %p: %p len %d", dev, buffer, length);
-
- // handle broken up transfers
- if(dev->pktlen) {
- if((length + dev->pktlen) > DEV_MRU) {
- usbmuxd_log(LL_ERROR, "Incoming split packet is too large (%d so far), dropping!", length + dev->pktlen);
- dev->pktlen = 0;
- return;
- }
- memcpy(dev->pktbuf + dev->pktlen, buffer, length);
- struct mux_header *mhdr = (struct mux_header *)dev->pktbuf;
- if((length < USB_MRU) || (ntohl(mhdr->length) == (length + dev->pktlen))) {
- buffer = dev->pktbuf;
- length += dev->pktlen;
- dev->pktlen = 0;
- usbmuxd_log(LL_SPEW, "Gathered mux data from buffer (total size: %d)", length);
- } else {
- dev->pktlen += length;
- usbmuxd_log(LL_SPEW, "Appended mux data to buffer (total size: %d)", dev->pktlen);
- return;
- }
- } else {
- struct mux_header *mhdr = (struct mux_header *)buffer;
- if((length == USB_MRU) && (length < ntohl(mhdr->length))) {
- memcpy(dev->pktbuf, buffer, length);
- dev->pktlen = length;
- usbmuxd_log(LL_SPEW, "Copied mux data to buffer (size: %d)", dev->pktlen);
- return;
- }
- }
-
- struct mux_header *mhdr = (struct mux_header *)buffer;
-
- if(ntohl(mhdr->length) != length) {
- usbmuxd_log(LL_ERROR, "Incoming packet size mismatch (dev %d, expected %d, got %d)", dev->id, ntohl(mhdr->length), length);
- return;
- }
-
- struct tcphdr *th;
- unsigned char *payload;
- uint32_t payload_length;
-
- switch(ntohl(mhdr->protocol)) {
- case MUX_PROTO_VERSION:
- if(length < (sizeof(struct mux_header) + sizeof(struct version_header))) {
- usbmuxd_log(LL_ERROR, "Incoming version packet is too small (%d)", length);
- return;
- }
- device_version_input(dev, (struct version_header *)(mhdr+1));
- break;
- case MUX_PROTO_TCP:
- if(length < (sizeof(struct mux_header) + sizeof(struct tcphdr))) {
- usbmuxd_log(LL_ERROR, "Incoming TCP packet is too small (%d)", length);
- return;
- }
- th = (struct tcphdr *)(mhdr+1);
- payload = (unsigned char *)(th+1);
- payload_length = length - sizeof(struct tcphdr) - sizeof(struct mux_header);
- device_tcp_input(dev, (struct tcphdr *)(mhdr+1), payload, payload_length);
- break;
- default:
- usbmuxd_log(LL_ERROR, "Incoming packet for device %d has unknown protocol 0x%x)", dev->id, ntohl(mhdr->protocol));
- break;
- }
-
-}
-
-int device_add(struct usb_device *usbdev)
-{
- int res;
- int id = get_next_device_id();
- struct mux_device *dev;
- usbmuxd_log(LL_NOTICE, "Connecting to new device on location 0x%x as ID %d", usb_get_location(usbdev), id);
- dev = malloc(sizeof(struct mux_device));
- dev->id = id;
- dev->usbdev = usbdev;
- dev->state = MUXDEV_INIT;
- dev->next_sport = 1;
- dev->pktbuf = malloc(DEV_MRU);
- dev->pktlen = 0;
- struct version_header vh;
- vh.major = htonl(1);
- vh.minor = htonl(0);
- vh.padding = 0;
- if((res = send_packet(dev, MUX_PROTO_VERSION, &vh, NULL, 0)) < 0) {
- usbmuxd_log(LL_ERROR, "Error sending version request packet to device %d", id);
- free(dev);
- return res;
- }
- collection_add(&device_list, dev);
- return 0;
-}
-
-void device_remove(struct usb_device *usbdev)
-{
- FOREACH(struct mux_device *dev, &device_list) {
- if(dev->usbdev == usbdev) {
- usbmuxd_log(LL_NOTICE, "Removed device %d on location 0x%x", dev->id, usb_get_location(usbdev));
- if(dev->state == MUXDEV_ACTIVE) {
- dev->state = MUXDEV_DEAD;
- FOREACH(struct mux_connection *conn, &dev->connections) {
- connection_teardown(conn);
- } ENDFOREACH
- client_device_remove(dev->id);
- collection_free(&dev->connections);
- }
- collection_remove(&device_list, dev);
- free(dev->pktbuf);
- free(dev);
- return;
- }
- } ENDFOREACH
- usbmuxd_log(LL_WARNING, "Cannot find device entry while removing USB device %p on location 0x%x", usbdev, usb_get_location(usbdev));
-}
-
-int device_get_count(void)
-{
- int count = 0;
- FOREACH(struct mux_device *dev, &device_list) {
- if(dev->state == MUXDEV_ACTIVE)
- count++;
- } ENDFOREACH
- return count;
-}
-
-int device_get_list(struct device_info *p)
-{
- int count = 0;
- FOREACH(struct mux_device *dev, &device_list) {
- if(dev->state == MUXDEV_ACTIVE) {
- p->id = dev->id;
- p->serial = usb_get_serial(dev->usbdev);
- p->location = usb_get_location(dev->usbdev);
- p->pid = usb_get_pid(dev->usbdev);
- count++;
- p++;
- }
- } ENDFOREACH
- return count;
-}
-
-int device_get_timeout(void)
-{
- uint64_t oldest = (uint64_t)-1;
- FOREACH(struct mux_device *dev, &device_list) {
- if(dev->state == MUXDEV_ACTIVE) {
- FOREACH(struct mux_connection *conn, &dev->connections) {
- if((conn->state == CONN_CONNECTED) && (conn->flags & CONN_ACK_PENDING) && conn->last_ack_time < oldest)
- oldest = conn->last_ack_time;
- } ENDFOREACH
- }
- } ENDFOREACH
- uint64_t ct = mstime64();
- if(oldest == -1)
- return 100000; //meh
- if((ct - oldest) > ACK_TIMEOUT)
- return 0;
- return ACK_TIMEOUT - (ct - oldest);
-}
-
-void device_check_timeouts(void)
-{
- uint64_t ct = mstime64();
- FOREACH(struct mux_device *dev, &device_list) {
- if(dev->state == MUXDEV_ACTIVE) {
- FOREACH(struct mux_connection *conn, &dev->connections) {
- if((conn->state == CONN_CONNECTED) &&
- (conn->flags & CONN_ACK_PENDING) &&
- (ct - conn->last_ack_time) > ACK_TIMEOUT) {
- usbmuxd_log(LL_DEBUG, "Sending ACK due to expired timeout (%" PRIu64 " -> %" PRIu64 ")", conn->last_ack_time, ct);
- if(send_tcp(conn, TH_ACK, NULL, 0) < 0) {
- usbmuxd_log(LL_ERROR, "Error sending TCP ACK to device %d (%d->%d)", dev->id, conn->sport, conn->dport);
- connection_teardown(conn);
- }
- }
- } ENDFOREACH
- }
- } ENDFOREACH
-}
-
-void device_init(void)
-{
- usbmuxd_log(LL_DEBUG, "device_init");
- collection_init(&device_list);
- next_device_id = 1;
-}
-
-void device_kill_connections(void)
-{
- usbmuxd_log(LL_DEBUG, "device_kill_connections");
- FOREACH(struct mux_device *dev, &device_list) {
- if(dev->state != MUXDEV_INIT) {
- FOREACH(struct mux_connection *conn, &dev->connections) {
- connection_teardown(conn);
- } ENDFOREACH
- }
- } ENDFOREACH
- // give USB a while to send the final connection RSTs and the like
- usb_process_timeout(100);
-}
-
-void device_shutdown(void)
-{
- usbmuxd_log(LL_DEBUG, "device_shutdown");
- FOREACH(struct mux_device *dev, &device_list) {
- FOREACH(struct mux_connection *conn, &dev->connections) {
- connection_teardown(conn);
- } ENDFOREACH
- collection_free(&dev->connections);
- collection_remove(&device_list, dev);
- free(dev);
- } ENDFOREACH
- collection_free(&device_list);
-}
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