sd-network: add new library

This is similar to sd-login, but exposes the state of networkd rather than logind.

Include it in libsystemd-dhcp and rename it to libsystemd-network.

1 files changed, 0 insertions, 190 deletions

diff --git a/src/libsystemd-dhcp/dhcp-packet.c b/src/libsystemd-dhcp/dhcp-packet.c
deleted file mode 100644
index 8388e56222..0000000000
--- a/src/libsystemd-dhcp/dhcp-packet.c
+++ /dev/null
@@ -1,190 +0,0 @@
-/***
-  This file is part of systemd.
-
-  Copyright (C) 2013 Intel Corporation. All rights reserved.
-  Copyright (C) 2014 Tom Gundersen
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd 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
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <stdlib.h>
-#include <errno.h>
-#include <string.h>
-#include <stdio.h>
-#include <net/ethernet.h>
-#include <net/if_arp.h>
-#include <sys/param.h>
-
-#include "util.h"
-#include "list.h"
-
-#include "dhcp-protocol.h"
-#include "dhcp-lease.h"
-#include "dhcp-internal.h"
-#include "sd-dhcp-client.h"
-
-#define DHCP_CLIENT_MIN_OPTIONS_SIZE            312
-
-int dhcp_message_init(DHCPMessage *message, uint8_t op, uint32_t xid,
-                      uint8_t type, uint8_t **opt, size_t *optlen) {
-        int err;
-
-        assert(op == BOOTREQUEST || op == BOOTREPLY);
-
-        *opt = (uint8_t *)(message + 1);
-
-        if (*optlen < 4)
-                return -ENOBUFS;
-        *optlen -= 4;
-
-        message->op = op;
-        message->htype = ARPHRD_ETHER;
-        message->hlen = ETHER_ADDR_LEN;
-        message->xid = htobe32(xid);
-
-        (*opt)[0] = 0x63;
-        (*opt)[1] = 0x82;
-        (*opt)[2] = 0x53;
-        (*opt)[3] = 0x63;
-
-        *opt += 4;
-
-        err = dhcp_option_append(opt, optlen, DHCP_OPTION_MESSAGE_TYPE, 1,
-                                 &type);
-        if (err < 0)
-                return err;
-
-        return 0;
-}
-
-static uint16_t dhcp_checksum(void *buf, int len) {
-        uint32_t sum;
-        uint16_t *check;
-        int i;
-        uint8_t *odd;
-
-        sum = 0;
-        check = buf;
-
-        for (i = 0; i < len / 2 ; i++)
-                sum += check[i];
-
-        if (len & 0x01) {
-                odd = buf;
-                sum += odd[len - 1];
-        }
-
-        while (sum >> 16)
-                sum = (sum & 0xffff) + (sum >> 16);
-
-        return ~sum;
-}
-
-void dhcp_packet_append_ip_headers(DHCPPacket *packet, uint16_t len) {
-        packet->ip.version = IPVERSION;
-        packet->ip.ihl = DHCP_IP_SIZE / 4;
-        packet->ip.tot_len = htobe16(len);
-
-        packet->ip.protocol = IPPROTO_UDP;
-        packet->ip.saddr = INADDR_ANY;
-        packet->ip.daddr = INADDR_BROADCAST;
-
-        packet->udp.source = htobe16(DHCP_PORT_CLIENT);
-        packet->udp.dest = htobe16(DHCP_PORT_SERVER);
-
-        packet->udp.len = htobe16(len - DHCP_IP_SIZE);
-
-        packet->ip.check = packet->udp.len;
-        packet->udp.check = dhcp_checksum(&packet->ip.ttl, len - 8);
-
-        packet->ip.ttl = IPDEFTTL;
-        packet->ip.check = 0;
-        packet->ip.check = dhcp_checksum(&packet->ip, DHCP_IP_SIZE);
-}
-
-int dhcp_packet_verify_headers(DHCPPacket *packet, size_t len, bool checksum) {
-        size_t hdrlen;
-
-        assert(packet);
-
-        /* IP */
-
-        if (len < DHCP_IP_SIZE) {
-                log_dhcp_client(client, "ignoring packet: packet (%zu bytes) "
-                                " smaller than IP header (%u bytes)", len,
-                                DHCP_IP_SIZE);
-                return -EINVAL;
-        }
-
-        if (packet->ip.ihl < 5) {
-                log_dhcp_client(client, "ignoring packet: IPv4 IHL (%u words) invalid",
-                                packet->ip.ihl);
-                return -EINVAL;
-        }
-
-        hdrlen = packet->ip.ihl * 4;
-        if (hdrlen < 20) {
-                log_dhcp_client(client, "ignoring packet: IPv4 IHL (%zu bytes) "
-                                "smaller than minimum (20 bytes)", hdrlen);
-                return -EINVAL;
-        }
-
-        if (len < hdrlen) {
-                log_dhcp_client(client, "ignoring packet: packet (%zu bytes) "
-                                "smaller than expected (%zu) by IP header", len,
-                                hdrlen);
-                return -EINVAL;
-        }
-
-        if (dhcp_checksum(&packet->ip, hdrlen)) {
-                log_dhcp_client(client, "ignoring packet: invalid IP checksum");
-                return -EINVAL;
-        }
-
-        /* UDP */
-
-        if (len < DHCP_IP_UDP_SIZE) {
-                log_dhcp_client(client, "ignoring packet: packet (%zu bytes) "
-                                " smaller than IP+UDP header (%u bytes)", len,
-                                DHCP_IP_UDP_SIZE);
-                return -EINVAL;
-        }
-
-        if (len < hdrlen + be16toh(packet->udp.len)) {
-                log_dhcp_client(client, "ignoring packet: packet (%zu bytes) "
-                                "smaller than expected (%zu) by UDP header", len,
-                                hdrlen + be16toh(packet->udp.len));
-                return -EINVAL;
-        }
-
-        if (checksum && packet->udp.check) {
-                packet->ip.check = packet->udp.len;
-                packet->ip.ttl = 0;
-
-                if (dhcp_checksum(&packet->ip.ttl,
-                                  be16toh(packet->udp.len) + 12)) {
-                        log_dhcp_client(client, "ignoring packet: invalid UDP checksum");
-                        return -EINVAL;
-                }
-        }
-
-        if (be16toh(packet->udp.dest) != DHCP_PORT_CLIENT) {
-                log_dhcp_client(client, "ignoring packet: to port %u, which "
-                                "is not the DHCP client port (%u)",
-                                be16toh(packet->udp.dest), DHCP_PORT_CLIENT);
-                return -EINVAL;
-        }
-
-        return 0;
-}