113 lines
3.4 KiB
C
113 lines
3.4 KiB
C
/*
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* libwebsockets - small server side websockets and web server implementation
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*
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* Copyright (C) 2010 - 2021 Andy Green <andy@warmcat.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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typedef enum {
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LDHC_INIT_REBOOT,
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LDHC_REBOOTING, /* jitterwait */
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LDHC_INIT, /* issue DHCPDISCOVER */
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LDHC_SELECTING,
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LDHC_REQUESTING,
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LDHC_REBINDING,
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LDHC_BOUND,
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LDHC_RENEWING
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} lws_dhcpc_state_t;
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enum {
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LWSDHC4PDISCOVER = 1,
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LWSDHC4POFFER,
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LWSDHC4PREQUEST,
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LWSDHC4PDECLINE,
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LWSDHC4PACK,
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LWSDHC4PNACK,
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LWSDHC4PRELEASE,
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LWSDHC4POPT_PAD = 0,
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LWSDHC4POPT_SUBNET_MASK = 1,
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LWSDHC4POPT_TIME_OFFSET = 2,
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LWSDHC4POPT_ROUTER = 3,
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LWSDHC4POPT_TIME_SERVER = 4,
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LWSDHC4POPT_NAME_SERVER = 5,
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LWSDHC4POPT_DNSERVER = 6,
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LWSDHC4POPT_LOG_SERVER = 7,
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LWSDHC4POPT_COOKIE_SERVER = 8,
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LWSDHC4POPT_LPR_SERVER = 9,
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LWSDHC4POPT_IMPRESS_SERVER = 10,
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LWSDHC4POPT_RESLOC_SERVER = 11,
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LWSDHC4POPT_HOST_NAME = 12,
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LWSDHC4POPT_BOOTFILE_SIZE = 13,
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LWSDHC4POPT_MERIT_DUMP_FILE = 14,
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LWSDHC4POPT_DOMAIN_NAME = 15,
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LWSDHC4POPT_SWAP_SERVER = 16,
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LWSDHC4POPT_ROOT_PATH = 17,
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LWSDHC4POPT_EXTENSIONS_PATH = 18,
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LWSDHC4POPT_BROADCAST_ADS = 28,
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LWSDHC4POPT_REQUESTED_ADS = 50,
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LWSDHC4POPT_LEASE_TIME = 51,
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LWSDHC4POPT_OPTION_OVERLOAD = 52,
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LWSDHC4POPT_MESSAGE_TYPE = 53,
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LWSDHC4POPT_SERVER_ID = 54,
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LWSDHC4POPT_PARAM_REQ_LIST = 55,
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LWSDHC4POPT_MESSAGE = 56,
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LWSDHC4POPT_MAX_DHCP_MSG_SIZE = 57,
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LWSDHC4POPT_RENEWAL_TIME = 58, /* AKA T1 */
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LWSDHC4POPT_REBINDING_TIME = 59, /* AKA T2 */
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LWSDHC4POPT_VENDOR_CLASS_ID = 60,
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LWSDHC4POPT_CLIENT_ID = 61,
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LWSDHC4POPT_END_OPTIONS = 255
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};
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typedef struct lws_dhcpc_req {
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lws_dll2_t list;
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struct lws_context *context;
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lws_sorted_usec_list_t sul_renew;
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lws_sorted_usec_list_t sul_conn;
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lws_sorted_usec_list_t sul_write;
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dhcpc_cb_t cb; /* cb on completion / failure */
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void *opaque; /* ignored by lws, give to cb */
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/* these are separated so we can close the bcast one asynchronously */
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struct lws *wsi_raw; /* for broadcast */
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lws_dhcpc_state_t state;
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lws_dhcpc_ifstate_t is;
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uint16_t retry_count_conn;
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uint16_t retry_count_write;
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uint8_t xid[4];
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uint8_t af; /* address family */
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} lws_dhcpc_req_t;
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/* interface name is overallocated here */
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void
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lws_dhcpc4_retry_conn(struct lws_sorted_usec_list *sul);
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int
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lws_dhcpc4_parse(lws_dhcpc_req_t *r, void *in, size_t len);
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void
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lws_dhcpc_retry_write(struct lws_sorted_usec_list *sul);
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