sd-network: add new library

[elogind.git] / src / libsystemd-dhcp / dhcp-option.c

diff --git a/src/libsystemd-dhcp/dhcp-option.c b/src/libsystemd-dhcp/dhcp-option.c
deleted file mode 100644 (file)
index 4d45b3b..0000000
--- a/src/libsystemd-dhcp/dhcp-option.c
+++ /dev/null
@@ -1,184 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
-  This file is part of systemd.
-
-  Copyright (C) 2013 Intel Corporation. All rights reserved.
-
-  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 <stdint.h>
-#include <string.h>
-#include <errno.h>
-#include <stdio.h>
-
-#include "dhcp-internal.h"
-
-int dhcp_option_append(uint8_t **buf, size_t *buflen, uint8_t code,
-                       size_t optlen, const void *optval)
-{
-        if (!buf || !buflen)
-                return -EINVAL;
-
-        switch (code) {
-
-        case DHCP_OPTION_PAD:
-        case DHCP_OPTION_END:
-                if (*buflen < 1)
-                        return -ENOBUFS;
-
-                (*buf)[0] = code;
-                *buf += 1;
-                *buflen -= 1;
-                break;
-
-        default:
-                if (*buflen < optlen + 2)
-                        return -ENOBUFS;
-
-                if (!optval)
-                        return -EINVAL;
-
-                (*buf)[0] = code;
-                (*buf)[1] = optlen;
-                memcpy(&(*buf)[2], optval, optlen);
-
-                *buf += optlen + 2;
-                *buflen -= (optlen + 2);
-
-                break;
-        }
-
-        return 0;
-}
-
-static int parse_options(const uint8_t *buf, size_t buflen, uint8_t *overload,
-                         uint8_t *message_type, dhcp_option_cb_t cb,
-                         void *user_data)
-{
-        const uint8_t *code = buf;
-        const uint8_t *len;
-
-        while (buflen > 0) {
-                switch (*code) {
-                case DHCP_OPTION_PAD:
-                        buflen -= 1;
-                        code++;
-                        break;
-
-                case DHCP_OPTION_END:
-                        return 0;
-
-                case DHCP_OPTION_MESSAGE_TYPE:
-                        if (buflen < 3)
-                                return -ENOBUFS;
-                        buflen -= 3;
-
-                        len = code + 1;
-                        if (*len != 1)
-                                return -EINVAL;
-
-                        if (message_type)
-                                *message_type = *(len + 1);
-
-                        code += 3;
-
-                        break;
-
-                case DHCP_OPTION_OVERLOAD:
-                        if (buflen < 3)
-                                return -ENOBUFS;
-                        buflen -= 3;
-
-                        len = code + 1;
-                        if (*len != 1)
-                                return -EINVAL;
-
-                        if (overload)
-                                *overload = *(len + 1);
-
-                        code += 3;
-
-                        break;
-
-                default:
-                        if (buflen < 3)
-                                return -ENOBUFS;
-
-                        len = code + 1;
-
-                        if (buflen < (size_t)*len + 2)
-                                return -EINVAL;
-                        buflen -= *len + 2;
-
-                        if (cb)
-                                cb(*code, *len, len + 1, user_data);
-
-                        code += *len + 2;
-
-                        break;
-                }
-        }
-
-        if (buflen)
-                return -EINVAL;
-
-        return 0;
-}
-
-int dhcp_option_parse(DHCPMessage *message, size_t len,
-                      dhcp_option_cb_t cb, void *user_data)
-{
-        uint8_t overload = 0;
-        uint8_t message_type = 0;
-        uint8_t *opt = (uint8_t *)(message + 1);
-        int res;
-
-        if (!message)
-                return -EINVAL;
-
-        if (len < sizeof(DHCPMessage) + 4)
-                return -EINVAL;
-
-        len -= sizeof(DHCPMessage) + 4;
-
-        if (opt[0] != 0x63 && opt[1] != 0x82 && opt[2] != 0x53 &&
-                        opt[3] != 0x63)
-                return -EINVAL;
-
-        res = parse_options(&opt[4], len, &overload, &message_type,
-                        cb, user_data);
-        if (res < 0)
-                return res;
-
-        if (overload & DHCP_OVERLOAD_FILE) {
-                res = parse_options(message->file, sizeof(message->file),
-                                NULL, &message_type, cb, user_data);
-                if (res < 0)
-                        return res;
-        }
-
-        if (overload & DHCP_OVERLOAD_SNAME) {
-                res = parse_options(message->sname, sizeof(message->sname),
-                                NULL, &message_type, cb, user_data);
-                if (res < 0)
-                        return res;
-        }
-
-        if (message_type)
-                return message_type;
-
-        return -ENOMSG;
-}