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Diffstat (limited to 'dhcpcd/dhcp-common.h')
| -rw-r--r-- | dhcpcd/dhcp-common.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/dhcpcd/dhcp-common.h b/dhcpcd/dhcp-common.h new file mode 100644 index 00000000..d9ccea9c --- /dev/null +++ b/dhcpcd/dhcp-common.h @@ -0,0 +1,105 @@ +/* + * dhcpcd - DHCP client daemon + * Copyright (c) 2006-2013 Roy Marples <roy@marples.name> + * All rights reserved + + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef DHCPCOMMON_H +#define DHCPCOMMON_H + +#include <arpa/inet.h> +#include <netinet/in.h> + +#include <stdint.h> + +#include "common.h" + +/* Max MTU - defines dhcp option length */ +#define MTU_MAX 1500 +#define MTU_MIN 576 + +#define REQUEST (1 << 0) +#define UINT8 (1 << 1) +#define UINT16 (1 << 2) +#define SINT16 (1 << 3) +#define UINT32 (1 << 4) +#define SINT32 (1 << 5) +#define ADDRIPV4 (1 << 6) +#define STRING (1 << 7) +#define ARRAY (1 << 8) +#define RFC3361 (1 << 9) +#define RFC3397 (1 << 10) +#define RFC3442 (1 << 11) +#define RFC5969 (1 << 12) +#define ADDRIPV6 (1 << 13) +#define BINHEX (1 << 14) +#define FLAG (1 << 15) +#define NOREQ (1 << 16) +#define EMBED (1 << 17) +#define ENCAP (1 << 18) +#define INDEX (1 << 19) +#define OPTION (1 << 20) + +struct dhcp_opt { + uint32_t option; /* Also used for IANA Enterpise Number */ + int type; + int len; + char *var; + + int index; /* Index counter for many instances of the same option */ + + /* Embedded options. + * The option code is irrelevant here. */ + struct dhcp_opt *embopts; + size_t embopts_len; + + /* Encapsulated options */ + struct dhcp_opt *encopts; + size_t encopts_len; +}; + +/* DHCP Vendor-Identifying Vendor Options, RFC3925 */ +extern struct dhcp_opt *vivso; +extern size_t vivso_len; + +struct dhcp_opt *vivso_find(uint16_t, const void *); + +#define add_option_mask(var, val) (var[val >> 3] |= 1 << (val & 7)) +#define del_option_mask(var, val) (var[val >> 3] &= ~(1 << (val & 7))) +#define has_option_mask(var, val) (var[val >>3] & (1 << (val & 7))) +int make_option_mask(const struct dhcp_opt *, size_t, + uint8_t *, const char *, int); + +size_t encode_rfc1035(const char *src, uint8_t *dst); +ssize_t decode_rfc3397(char *, ssize_t, int, const uint8_t *); +ssize_t print_string(char *, ssize_t, int, const uint8_t *); +ssize_t print_option(char *, ssize_t, int, int, const uint8_t *, const char *); + +ssize_t dhcp_envoption(char **, const char *, const char *, struct dhcp_opt *, + const uint8_t *(*dgetopt)(unsigned int *, unsigned int *, unsigned int *, + const uint8_t *, unsigned int, struct dhcp_opt **), + const uint8_t *od, int ol); +void dhcp_zero_index(struct dhcp_opt *); + +#endif |