[96b02b5] | 1 | /* |
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[a7cce8d] | 2 | * Copyright (C) 2020-2021 Soleta Networks <info@soleta.eu> |
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[96b02b5] | 3 | * |
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| 4 | * This program is free software: you can redistribute it and/or modify it under |
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| 5 | * the terms of the GNU Affero General Public License as published by the |
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[a7cce8d] | 6 | * Free Software Foundation; either version 3 of the License, or |
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| 7 | * (at your option) any later version. |
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[96b02b5] | 8 | */ |
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| 9 | #include <sys/types.h> |
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| 10 | #include <ifaddrs.h> |
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| 11 | #include <string.h> |
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| 12 | #include <netinet/in.h> |
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| 13 | #include <sys/socket.h> |
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| 14 | #include <syslog.h> |
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| 15 | #include <stddef.h> |
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| 16 | #include <sys/types.h> |
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| 17 | #include <sys/stat.h> |
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| 18 | #include <sys/types.h> |
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| 19 | #include <sys/socket.h> |
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| 20 | #include <fcntl.h> |
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| 21 | #include "wol.h" |
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[1f13855] | 22 | #include "rest.h" |
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[fe1ce97] | 23 | #include "cfg.h" |
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[96b02b5] | 24 | #include "ogAdmServer.h" |
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| 25 | |
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[060e31c] | 26 | int wol_socket_open(void) |
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| 27 | { |
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| 28 | unsigned int on = 1; |
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| 29 | int ret, s; |
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| 30 | |
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| 31 | s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); |
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| 32 | if (s < 0) { |
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| 33 | syslog(LOG_ERR, "cannot create socket for magic packet\n"); |
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| 34 | return -1; |
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| 35 | } |
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| 36 | ret = setsockopt(s, SOL_SOCKET, SO_BROADCAST, (unsigned int *) &on, |
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| 37 | sizeof(on)); |
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| 38 | if (ret < 0) { |
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| 39 | syslog(LOG_ERR, "cannot set broadcast socket\n"); |
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| 40 | return -1; |
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| 41 | } |
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| 42 | |
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| 43 | return s; |
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| 44 | } |
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| 45 | |
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[216986e] | 46 | static int wake_up_send(int sd, struct sockaddr_in *client, |
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| 47 | const struct wol_msg *msg, const struct in_addr *addr) |
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[96b02b5] | 48 | { |
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| 49 | int ret; |
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| 50 | |
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| 51 | client->sin_addr.s_addr = addr->s_addr; |
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| 52 | |
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| 53 | ret = sendto(sd, msg, sizeof(*msg), 0, |
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| 54 | (struct sockaddr *)client, sizeof(*client)); |
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| 55 | if (ret < 0) { |
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| 56 | syslog(LOG_ERR, "failed to send wol\n"); |
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[216986e] | 57 | return -1; |
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[96b02b5] | 58 | } |
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| 59 | |
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[216986e] | 60 | return 0; |
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[96b02b5] | 61 | } |
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| 62 | |
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[216986e] | 63 | static int wake_up_broadcast(int sd, struct sockaddr_in *client, |
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| 64 | const struct wol_msg *msg) |
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[96b02b5] | 65 | { |
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| 66 | struct sockaddr_in *broadcast_addr, addr = {}; |
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| 67 | struct ifaddrs *ifaddr, *ifa; |
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| 68 | |
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| 69 | if (getifaddrs(&ifaddr) < 0) { |
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| 70 | syslog(LOG_ERR, "cannot get list of addresses\n"); |
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[216986e] | 71 | return -1; |
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[96b02b5] | 72 | } |
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| 73 | |
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| 74 | addr.sin_addr.s_addr = htonl(INADDR_BROADCAST); |
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| 75 | |
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| 76 | for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) { |
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| 77 | if (ifa->ifa_addr == NULL || |
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| 78 | ifa->ifa_addr->sa_family != AF_INET || |
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[fe1ce97] | 79 | strcmp(ifa->ifa_name, ogconfig.wol.interface) != 0) |
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[96b02b5] | 80 | continue; |
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| 81 | |
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| 82 | broadcast_addr = |
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| 83 | (struct sockaddr_in *)ifa->ifa_ifu.ifu_broadaddr; |
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| 84 | addr.sin_addr.s_addr = broadcast_addr->sin_addr.s_addr; |
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| 85 | break; |
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| 86 | } |
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| 87 | freeifaddrs(ifaddr); |
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| 88 | |
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| 89 | return wake_up_send(sd, client, msg, &addr.sin_addr); |
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| 90 | } |
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[1f13855] | 91 | |
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[216986e] | 92 | enum wol_delivery_type { |
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| 93 | OG_WOL_BROADCAST = 1, |
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| 94 | OG_WOL_UNICAST = 2 |
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| 95 | }; |
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| 96 | |
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| 97 | int wake_up(int s, const struct in_addr *addr, const struct in_addr *netmask, |
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| 98 | const char *mac, uint32_t wol_delivery_type) |
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| 99 | { |
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| 100 | uint32_t mac_addr_u32[OG_WOL_MACADDR_LEN]; |
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| 101 | uint8_t mac_addr[OG_WOL_MACADDR_LEN]; |
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| 102 | struct sockaddr_in dest = { |
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| 103 | .sin_family = AF_INET, |
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| 104 | .sin_port = htons(OG_WOL_PORT), |
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| 105 | }; |
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| 106 | struct in_addr broadcast_addr; |
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| 107 | struct wol_msg msg = {}; |
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| 108 | int ret, i; |
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| 109 | |
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| 110 | memset(msg.wol_sequence_ff, 0xff, OG_WOL_SEQUENCE); |
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| 111 | sscanf(mac, "%02x%02x%02x%02x%02x%02x", |
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| 112 | &mac_addr_u32[0], &mac_addr_u32[1], &mac_addr_u32[2], |
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| 113 | &mac_addr_u32[3], &mac_addr_u32[4], &mac_addr_u32[5]); |
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| 114 | |
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| 115 | for (i = 0; i < OG_WOL_MACADDR_LEN; i++) |
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| 116 | mac_addr[i] = mac_addr_u32[i]; |
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| 117 | for (i = 0; i < OG_WOL_REPEAT; i++) |
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| 118 | memcpy(&msg.mac_addr[i][0], mac_addr, OG_WOL_MACADDR_LEN); |
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| 119 | |
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| 120 | switch (wol_delivery_type) { |
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| 121 | case OG_WOL_BROADCAST: |
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| 122 | ret = wake_up_broadcast(s, &dest, &msg); |
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| 123 | broadcast_addr.s_addr = addr->s_addr | ~netmask->s_addr; |
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| 124 | ret |= wake_up_send(s, &dest, &msg, &broadcast_addr); |
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| 125 | break; |
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| 126 | case OG_WOL_UNICAST: |
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| 127 | ret = wake_up_send(s, &dest, &msg, addr); |
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| 128 | break; |
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| 129 | default: |
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| 130 | syslog(LOG_ERR, "unknown wol type\n"); |
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| 131 | ret = -1; |
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| 132 | break; |
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| 133 | } |
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| 134 | |
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| 135 | return ret; |
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| 136 | } |
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| 137 | |
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[64bbc0c] | 138 | #define OG_WOL_CLIENT_TIMEOUT 60. |
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[1f13855] | 139 | |
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| 140 | static void og_client_wol_timer_cb(struct ev_loop *loop, ev_timer *timer, |
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| 141 | int events) |
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| 142 | { |
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| 143 | struct og_client_wol *cli_wol; |
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| 144 | |
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| 145 | cli_wol = container_of(timer, struct og_client_wol, timer); |
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| 146 | |
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| 147 | syslog(LOG_ERR, "timeout WakeOnLAN request for client %s\n", |
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| 148 | inet_ntoa(cli_wol->addr)); |
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[64bbc0c] | 149 | og_client_wol_destroy(cli_wol); |
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[1f13855] | 150 | } |
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| 151 | |
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| 152 | struct og_client_wol *og_client_wol_create(const struct in_addr *addr) |
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| 153 | { |
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| 154 | struct og_client_wol *cli_wol; |
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| 155 | |
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| 156 | cli_wol = calloc(1, sizeof(struct og_client_wol)); |
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| 157 | if (!cli_wol) |
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| 158 | return NULL; |
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| 159 | |
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| 160 | cli_wol->addr = *addr; |
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| 161 | |
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[64bbc0c] | 162 | ev_init(&cli_wol->timer, og_client_wol_timer_cb); |
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| 163 | cli_wol->timer.repeat = OG_WOL_CLIENT_TIMEOUT; |
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| 164 | ev_timer_again(og_loop, &cli_wol->timer); |
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[1f13855] | 165 | |
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| 166 | return cli_wol; |
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| 167 | } |
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| 168 | |
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| 169 | void og_client_wol_refresh(struct og_client_wol *cli_wol) |
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| 170 | { |
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| 171 | ev_timer_again(og_loop, &cli_wol->timer); |
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| 172 | } |
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| 173 | |
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| 174 | void og_client_wol_destroy(struct og_client_wol *cli_wol) |
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| 175 | { |
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| 176 | ev_timer_stop(og_loop, &cli_wol->timer); |
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| 177 | list_del(&cli_wol->list); |
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| 178 | free(cli_wol); |
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| 179 | } |
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| 180 | |
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| 181 | const char *og_client_wol_status(const struct og_client_wol *wol) |
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| 182 | { |
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| 183 | return "WOL_SENT"; |
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| 184 | } |
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