X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Flibsystemd-network%2Fsd-dhcp-server.c;fp=src%2Flibsystemd-network%2Fsd-dhcp-server.c;h=ab683228b493831073b672befeebb146908c318e;hb=a6f1e036de8f212f33ead7f5387c297afd8be26e;hp=c224aa1512dc6e5199c2c0ecf6e6743bebf6a505;hpb=212bbb1798e5746a669dfba4a1732a4eabe4f2d8;p=elogind.git diff --git a/src/libsystemd-network/sd-dhcp-server.c b/src/libsystemd-network/sd-dhcp-server.c index c224aa151..ab683228b 100644 --- a/src/libsystemd-network/sd-dhcp-server.c +++ b/src/libsystemd-network/sd-dhcp-server.c @@ -31,7 +31,8 @@ #define DHCP_DEFAULT_LEASE_TIME 3600 /* one hour */ -int sd_dhcp_server_set_lease_pool(sd_dhcp_server *server, struct in_addr *address, +int sd_dhcp_server_set_lease_pool(sd_dhcp_server *server, + struct in_addr *address, size_t size) { assert_return(server, -EINVAL); assert_return(address, -EINVAL); @@ -51,7 +52,8 @@ int sd_dhcp_server_set_lease_pool(sd_dhcp_server *server, struct in_addr *addres return 0; } -int sd_dhcp_server_set_address(sd_dhcp_server *server, struct in_addr *address, unsigned char prefixlen) { +int sd_dhcp_server_set_address(sd_dhcp_server *server, struct in_addr *address, + unsigned char prefixlen) { assert_return(server, -EINVAL); assert_return(address, -EINVAL); assert_return(address->s_addr, -EINVAL); @@ -78,7 +80,8 @@ sd_dhcp_server *sd_dhcp_server_ref(sd_dhcp_server *server) { return server; } -unsigned long client_id_hash_func(const void *p, const uint8_t hash_key[HASH_KEY_SIZE]) { +unsigned long client_id_hash_func(const void *p, + const uint8_t hash_key[HASH_KEY_SIZE]) { uint64_t u; const DHCPClientId *id = p; @@ -155,7 +158,8 @@ int sd_dhcp_server_new(sd_dhcp_server **ret, int ifindex) { server->address = htobe32(INADDR_ANY); server->netmask = htobe32(INADDR_ANY); server->index = ifindex; - server->leases_by_client_id = hashmap_new(client_id_hash_func, client_id_compare_func); + server->leases_by_client_id = hashmap_new(client_id_hash_func, + client_id_compare_func); *ret = server; server = NULL; @@ -163,7 +167,8 @@ int sd_dhcp_server_new(sd_dhcp_server **ret, int ifindex) { return 0; } -int sd_dhcp_server_attach_event(sd_dhcp_server *server, sd_event *event, int priority) { +int sd_dhcp_server_attach_event(sd_dhcp_server *server, sd_event *event, + int priority) { int r; assert_return(server, -EINVAL); @@ -210,8 +215,8 @@ int sd_dhcp_server_stop(sd_dhcp_server *server) { return 0; } -static int dhcp_server_send_unicast_raw(sd_dhcp_server *server, DHCPPacket *packet, - size_t len) { +static int dhcp_server_send_unicast_raw(sd_dhcp_server *server, + DHCPPacket *packet, size_t len) { union sockaddr_union link = { .ll.sll_family = AF_PACKET, .ll.sll_protocol = htons(ETH_P_IP), @@ -229,7 +234,8 @@ static int dhcp_server_send_unicast_raw(sd_dhcp_server *server, DHCPPacket *pack memcpy(&link.ll.sll_addr, &packet->dhcp.chaddr, ETH_ALEN); dhcp_packet_append_ip_headers(packet, server->address, DHCP_PORT_SERVER, - packet->dhcp.yiaddr, DHCP_PORT_CLIENT, len); + packet->dhcp.yiaddr, + DHCP_PORT_CLIENT, len); r = dhcp_network_send_raw_socket(server->fd_raw, &link, packet, len); if (r < 0) @@ -354,17 +360,20 @@ int dhcp_server_send_packet(sd_dhcp_server *server, return dhcp_server_send_udp(server, destination, &packet->dhcp, sizeof(DHCPMessage) + optoffset); else if (requested_broadcast(req) || type == DHCP_NAK) - return dhcp_server_send_udp(server, INADDR_BROADCAST, &packet->dhcp, + return dhcp_server_send_udp(server, INADDR_BROADCAST, + &packet->dhcp, sizeof(DHCPMessage) + optoffset); else - /* we cannot send UDP packet to specific MAC address when the address is - not yet configured, so must fall back to raw packets */ + /* we cannot send UDP packet to specific MAC address when the + address is not yet configured, so must fall back to raw + packets */ return dhcp_server_send_unicast_raw(server, packet, sizeof(DHCPPacket) + optoffset); } static int server_message_init(sd_dhcp_server *server, DHCPPacket **ret, - uint8_t type, size_t *_optoffset, DHCPRequest *req) { + uint8_t type, size_t *_optoffset, + DHCPRequest *req) { _cleanup_free_ DHCPPacket *packet = NULL; size_t optoffset = 0; int r; @@ -378,8 +387,9 @@ static int server_message_init(sd_dhcp_server *server, DHCPPacket **ret, if (!packet) return -ENOMEM; - r = dhcp_message_init(&packet->dhcp, BOOTREPLY, be32toh(req->message->xid), - type, req->max_optlen, &optoffset); + r = dhcp_message_init(&packet->dhcp, BOOTREPLY, + be32toh(req->message->xid), type, req->max_optlen, + &optoffset); if (r < 0) return r; @@ -394,7 +404,8 @@ static int server_message_init(sd_dhcp_server *server, DHCPPacket **ret, return 0; } -static int server_send_offer(sd_dhcp_server *server, DHCPRequest *req, be32_t address) { +static int server_send_offer(sd_dhcp_server *server, DHCPRequest *req, + be32_t address) { _cleanup_free_ DHCPPacket *packet = NULL; size_t offset; be32_t lease_time; @@ -408,7 +419,8 @@ static int server_send_offer(sd_dhcp_server *server, DHCPRequest *req, be32_t ad lease_time = htobe32(req->lifetime); r = dhcp_option_append(&packet->dhcp, req->max_optlen, &offset, 0, - DHCP_OPTION_IP_ADDRESS_LEASE_TIME, 4, &lease_time); + DHCP_OPTION_IP_ADDRESS_LEASE_TIME, 4, + &lease_time); if (r < 0) return r; @@ -429,7 +441,8 @@ static int server_send_offer(sd_dhcp_server *server, DHCPRequest *req, be32_t ad return 0; } -static int server_send_ack(sd_dhcp_server *server, DHCPRequest *req, be32_t address) { +static int server_send_ack(sd_dhcp_server *server, DHCPRequest *req, + be32_t address) { _cleanup_free_ DHCPPacket *packet = NULL; size_t offset; be32_t lease_time; @@ -443,7 +456,8 @@ static int server_send_ack(sd_dhcp_server *server, DHCPRequest *req, be32_t addr lease_time = htobe32(req->lifetime); r = dhcp_option_append(&packet->dhcp, req->max_optlen, &offset, 0, - DHCP_OPTION_IP_ADDRESS_LEASE_TIME, 4, &lease_time); + DHCP_OPTION_IP_ADDRESS_LEASE_TIME, 4, + &lease_time); if (r < 0) return r; @@ -480,8 +494,8 @@ static int server_send_nak(sd_dhcp_server *server, DHCPRequest *req) { return 0; } -static int server_send_forcerenew(sd_dhcp_server *server, be32_t address, be32_t gateway, - uint8_t chaddr[]) { +static int server_send_forcerenew(sd_dhcp_server *server, be32_t address, + be32_t gateway, uint8_t chaddr[]) { _cleanup_free_ DHCPPacket *packet = NULL; size_t optoffset = 0; int r; @@ -579,7 +593,8 @@ static int ensure_sane_request(DHCPRequest *req, DHCPMessage *message) { req->message = message; - /* set client id based on mac address if client did not send an explicit one */ + /* set client id based on mac address if client did not send an explicit + one */ if (!req->client_id.data) { uint8_t *data; @@ -643,7 +658,8 @@ int dhcp_server_handle_message(sd_dhcp_server *server, DHCPMessage *message, /* this only fails on critical errors */ return r; - existing_lease = hashmap_get(server->leases_by_client_id, &req->client_id); + existing_lease = hashmap_get(server->leases_by_client_id, + &req->client_id); switch(type) { case DHCP_DISCOVER: @@ -768,12 +784,15 @@ int dhcp_server_handle_message(sd_dhcp_server *server, DHCPMessage *message, return -ENOMEM; } lease->client_id.length = req->client_id.length; - memcpy(&lease->chaddr, &req->message->chaddr, ETH_ALEN); + memcpy(&lease->chaddr, &req->message->chaddr, + ETH_ALEN); lease->gateway = req->message->giaddr; } else lease = existing_lease; - r = sd_event_now(server->event, clock_boottime_or_monotonic(), &time_now); + r = sd_event_now(server->event, + clock_boottime_or_monotonic(), + &time_now); if (r < 0) time_now = now(clock_boottime_or_monotonic()); lease->expiration = req->lifetime * USEC_PER_SEC + time_now; @@ -793,7 +812,8 @@ int dhcp_server_handle_message(sd_dhcp_server *server, DHCPMessage *message, be32toh(req->message->xid)); server->bound_leases[pool_offset] = lease; - hashmap_put(server->leases_by_client_id, &lease->client_id, lease); + hashmap_put(server->leases_by_client_id, + &lease->client_id, lease); return DHCP_ACK; } @@ -885,7 +905,8 @@ static int server_receive_message(sd_event_source *s, int fd, cmsg->cmsg_len == CMSG_LEN(sizeof(struct in_pktinfo))) { struct in_pktinfo *info = (struct in_pktinfo*)CMSG_DATA(cmsg); - /* TODO figure out if this can be done as a filter on the socket, like for IPv6 */ + /* TODO figure out if this can be done as a filter on + * the socket, like for IPv6 */ if (server->index != info->ipi_ifindex) return 0;