| // Copyright 2016 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "netsvc.h" |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <threads.h> |
| #include <unistd.h> |
| |
| #include <inet6/inet6.h> |
| #include <inet6/netifc.h> |
| |
| #include <lib/fdio/io.h> |
| #include <lib/fdio/spawn.h> |
| #include <zircon/boot/netboot.h> |
| #include <zircon/process.h> |
| #include <zircon/processargs.h> |
| #include <zircon/syscalls.h> |
| #include <zircon/syscalls/log.h> |
| #include <zircon/time.h> |
| |
| #include "device_id.h" |
| |
| #define FILTER_IPV6 1 |
| |
| bool netbootloader = false; |
| |
| static void run_program(const char* progname, const char** argv, zx_handle_t h) { |
| zx_handle_t logger = ZX_HANDLE_INVALID; |
| zx_debuglog_create(ZX_HANDLE_INVALID, 0, &logger); |
| |
| fdio_spawn_action_t actions[] = { |
| {.action = FDIO_SPAWN_ACTION_SET_NAME, .name = {.data = progname}}, |
| {.action = FDIO_SPAWN_ACTION_ADD_HANDLE, |
| .h = {.id = PA_HND(PA_FDIO_LOGGER, 0 | FDIO_FLAG_USE_FOR_STDIO), .handle = logger}}, |
| {.action = FDIO_SPAWN_ACTION_ADD_HANDLE, .h = {.id = PA_HND(PA_USER0, 0), .handle = h}}, |
| }; |
| |
| size_t action_count = (h == ZX_HANDLE_INVALID) ? 2 : 3; |
| uint32_t flags = FDIO_SPAWN_CLONE_ALL & ~FDIO_SPAWN_CLONE_STDIO; |
| char err_msg[FDIO_SPAWN_ERR_MSG_MAX_LENGTH]; |
| |
| zx_status_t status = fdio_spawn_etc(ZX_HANDLE_INVALID, flags, argv[0], argv, NULL, action_count, |
| actions, NULL, err_msg); |
| |
| if (status != ZX_OK) { |
| printf("netsvc: cannot launch %s: %d: %s\n", argv[0], status, err_msg); |
| } |
| } |
| |
| void netboot_run_cmd(const char* cmd) { |
| const char* argv[] = {"/boot/bin/sh", "-c", cmd, NULL}; |
| printf("net cmd: %s\n", cmd); |
| run_program("net:sh", argv, ZX_HANDLE_INVALID); |
| } |
| |
| const char* nodename = "zircon"; |
| |
| void udp6_recv(void* data, size_t len, const ip6_addr_t* daddr, uint16_t dport, |
| const ip6_addr_t* saddr, uint16_t sport) { |
| |
| bool mcast = (memcmp(daddr, &ip6_ll_all_nodes, sizeof(ip6_addr_t)) == 0); |
| |
| switch (dport) { |
| case NB_SERVER_PORT: |
| netboot_recv(data, len, mcast, daddr, dport, saddr, sport); |
| break; |
| case DEBUGLOG_ACK_PORT: |
| debuglog_recv(data, len, mcast); |
| break; |
| case NB_TFTP_INCOMING_PORT: |
| case NB_TFTP_OUTGOING_PORT: |
| tftp_recv(data, len, daddr, dport, saddr, sport); |
| break; |
| } |
| } |
| |
| void netifc_recv(void* data, size_t len) { |
| eth_recv(data, len); |
| } |
| |
| bool netifc_send_pending() { |
| if (!tftp_has_pending()) { |
| return false; |
| } |
| tftp_send_next(); |
| return tftp_has_pending(); |
| } |
| |
| void update_timeouts() { |
| zx_time_t now = zx_clock_get_monotonic(); |
| zx_time_t next_timeout = |
| (debuglog_next_timeout < tftp_next_timeout) ? debuglog_next_timeout : tftp_next_timeout; |
| if (next_timeout != ZX_TIME_INFINITE) { |
| uint32_t ms = static_cast<uint32_t>( |
| (next_timeout < now) ? 0 : (zx_time_sub_time(next_timeout, now)) / ZX_MSEC(1)); |
| netifc_set_timer(ms); |
| } |
| } |
| |
| static const char* zedboot_banner = " _ _ _ \n" |
| " | | | | | \n" |
| " _______ __| | |__ ___ ___ | |_ \n" |
| " |_ / _ \\/ _` | '_ \\ / _ \\ / _ \\| __|\n" |
| " / / __/ (_| | |_) | (_) | (_) | |_ \n" |
| " /___\\___|\\__,_|_.__/ \\___/ \\___/ \\__|\n" |
| " \n" |
| "\n"; |
| |
| int main(int argc, char** argv) { |
| unsigned char mac[6]; |
| uint16_t mtu; |
| char device_id[DEVICE_ID_MAX]; |
| |
| if (debuglog_init() < 0) { |
| return -1; |
| } |
| |
| const char* interface = NULL; |
| bool nodename_provided = false; |
| bool should_advertise = false; |
| while (argc > 1) { |
| if (!strncmp(argv[1], "--netboot", 9)) { |
| netbootloader = true; |
| } else if (!strncmp(argv[1], "--advertise", 11)) { |
| should_advertise = true; |
| } else if (!strncmp(argv[1], "--interface", 11)) { |
| if (argc < 3) { |
| printf("netsvc: fatal error: missing argument to --interface\n"); |
| return -1; |
| } |
| interface = argv[2]; |
| // Advance args one position. The second arg will be advanced below. |
| argv++; |
| argc--; |
| } else { |
| nodename = argv[1]; |
| nodename_provided = true; |
| } |
| argv++; |
| argc--; |
| } |
| if (interface != NULL) { |
| printf("netsvc: looking for interface %s\n", interface); |
| } |
| |
| for (;;) { |
| if (netifc_open(interface) != 0) { |
| printf("netsvc: fatal error initializing network\n"); |
| return -1; |
| } |
| |
| // Use mac address to generate unique nodename unless one was provided. |
| if (!nodename_provided) { |
| netifc_get_info(mac, &mtu); |
| device_id_get(mac, device_id); |
| nodename = device_id; |
| } |
| |
| if (netbootloader) { |
| printf("%szedboot: version: %s\n\n", zedboot_banner, BOOTLOADER_VERSION); |
| } |
| |
| printf("netsvc: nodename='%s'\n", nodename); |
| if (!should_advertise) { |
| printf("netsvc: will not advertise\n"); |
| } |
| printf("netsvc: start\n"); |
| for (;;) { |
| if (netbootloader && should_advertise) { |
| netboot_advertise(nodename); |
| } |
| |
| update_timeouts(); |
| |
| if (netifc_poll()) { |
| printf("netsvc: netifc_poll() failed - terminating\n"); |
| break; |
| } |
| zx_time_t now = zx_clock_get_monotonic(); |
| if (now > debuglog_next_timeout) { |
| debuglog_timeout_expired(); |
| } |
| if (now > tftp_next_timeout) { |
| tftp_timeout_expired(); |
| } |
| } |
| netifc_close(); |
| } |
| |
| return 0; |
| } |