Remove udhcp (DHCP server support) as it's a GPL violation :(
This commit is contained in:
Angus Gratton
parent
8e174aa518
commit
dc4ca6861f
6 changed files with 5 additions and 623 deletions
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@ -4,6 +4,10 @@
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#include <string.h>
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#include "FreeRTOS.h"
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/* SDK uses this and so does lwip, it was defined in libudhcp.a
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but that library has been removed. */
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int errno;
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/* libc memory management functions.
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Many of these are linked from the RTOS SDK blob libraries.
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@ -56,7 +56,7 @@ OBJCOPY = $(CROSS)objcopy
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COMPONENTS ?= FreeRTOS lwip
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# libraries to link, mainly blobs provided by the esp-iot-rtos SDK
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LIBS ?= gcc json main net80211 phy pp ssl udhcp wpa hal
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LIBS ?= gcc json main net80211 phy pp ssl wpa hal
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CFLAGS = -Wall -Werror -Wl,-EL -nostdlib -mlongcalls -mtext-section-literals -std=gnu99
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LDFLAGS = -nostdlib -Wl,--no-check-sections -Wl,-L$(ROOT)lib -u call_user_start -Wl,-static -Wl,-Map=build/${TARGET}.map
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@ -1,434 +0,0 @@
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/* vi: set sw=4 ts=4: */
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/*
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* Russ Dill <Russ.Dill@asu.edu> September 2001
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* Rewritten by Vladimir Oleynik <dzo@simtreas.ru> (C) 2003
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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#ifndef UDHCP_COMMON_H
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#define UDHCP_COMMON_H 1
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#include "esp_common.h"
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#include "lwip/sockets.h"
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//PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
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extern const uint8_t MAC_BCAST_ADDR[6]; /* six all-ones */
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#ifndef BUFSIZ
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# define BUFSIZ 1024
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#endif
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typedef int smallint;
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typedef unsigned smalluint;
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/* Providing hard guarantee on minimum size (think of BUFSIZ == 128) */
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enum { COMMON_BUFSIZE = (BUFSIZ >= 256*sizeof(void*) ? BUFSIZ+1 : 256*sizeof(void*)) };
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extern char bb_common_bufsiz1[COMMON_BUFSIZE];
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/* In this form code with pipes is much more readable */
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struct fd_pair { int rd; int wr; };
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/* Having next pointer as a first member allows easy creation
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* of "llist-compatible" structs, and using llist_FOO functions
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* on them.
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*/
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typedef struct llist_t {
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struct llist_t *link;
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char *data;
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} llist_t;
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void llist_add_to(llist_t **old_head, void *data);
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void llist_add_to_end(llist_t **list_head, void *data);
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void *llist_pop(llist_t **elm);
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void llist_unlink(llist_t **head, llist_t *elm);
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void llist_free(llist_t *elm, void (*freeit)(void *data));
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llist_t *llist_rev(llist_t *list);
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llist_t *llist_find_str(llist_t *first, const char *str);
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//unsigned long long monotonic_ns(void);
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//unsigned long long monotonic_us(void);
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//unsigned long long monotonic_ms(void);
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unsigned monotonic_sec(void);
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/* performs reasonably well (gcc usually inlines memcpy here) */
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# define move_from_unaligned_int(v, intp) (memcpy(&(v), (intp), sizeof(int)))
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# define move_from_unaligned_long(v, longp) (memcpy(&(v), (longp), sizeof(long)))
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# define move_from_unaligned16(v, u16p) (memcpy(&(v), (u16p), 2))
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# define move_from_unaligned32(v, u32p) (memcpy(&(v), (u32p), 4))
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# define move_to_unaligned16(u16p, v) do { \
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uint16_t __t = (v); \
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memcpy((u16p), &__t, 2); \
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} while (0)
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# define move_to_unaligned32(u32p, v) do { \
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uint32_t __t = (v); \
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memcpy((u32p), &__t, 4); \
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} while (0)
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enum { wrote_pidfile = 0 };
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#define write_pidfile(path) ((void)0)
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#define remove_pidfile(path) ((void)0)
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#ifndef ENABLE_FEATURE_UDHCP_8021Q
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#define ENABLE_FEATURE_UDHCP_8021Q 0
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#endif
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#ifndef ENABLE_FEATURE_UDHCP_RFC3397
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#define ENABLE_FEATURE_UDHCP_RFC3397 0
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#endif
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#ifndef ENABLE_LONG_OPTS
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#define ENABLE_LONG_OPTS 0
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#endif
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#ifndef ENABLE_FEATURE_UDHCPC_ARPING
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#define ENABLE_FEATURE_UDHCPC_ARPING 0
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#endif
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#ifndef ENABLE_FEATURE_UDHCP_PORT
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#define ENABLE_FEATURE_UDHCP_PORT 0
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#endif
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#ifndef ENABLE_FEATURE_UDHCPD_BASE_IP_ON_MAC
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#define ENABLE_FEATURE_UDHCPD_BASE_IP_ON_MAC 0
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#endif
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#ifndef ENABLE_NOMMU
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#define ENABLE_NOMMU 0
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#endif
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#ifndef ENABLE_FEATURE_IPV6
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#define ENABLE_FEATURE_IPV6 0
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#endif
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#ifndef ENABLE_FEATURE_UDHCPD_WRITE_LEASES_EARLY
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#define ENABLE_FEATURE_UDHCPD_WRITE_LEASES_EARLY 0
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#endif
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/*
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* For 0.9.29 and svn, __ARCH_USE_MMU__ indicates no-mmu reliably.
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* For earlier versions there is no reliable way to check if we are building
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* for a mmu-less system.
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*/
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#if ENABLE_NOMMU
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# define BB_MMU 0
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# define USE_FOR_NOMMU(...) __VA_ARGS__
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# define USE_FOR_MMU(...)
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#else
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# define BB_MMU 1
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# define USE_FOR_NOMMU(...)
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# define USE_FOR_MMU(...) __VA_ARGS__
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#endif
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#define ARRAY_SIZE(x) ((unsigned)(sizeof(x) / sizeof((x)[0])))
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/*** DHCP packet ***/
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/* DHCP protocol. See RFC 2131 */
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#define DHCP_MAGIC 0x63825363
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#define DHCP_OPTIONS_BUFSIZE 308
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#define BOOTREQUEST 1
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#define BOOTREPLY 2
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//TODO: rename ciaddr/yiaddr/chaddr
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struct dhcp_packet {
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uint8_t op; /* BOOTREQUEST or BOOTREPLY */
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uint8_t htype; /* hardware address type. 1 = 10mb ethernet */
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uint8_t hlen; /* hardware address length */
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uint8_t hops; /* used by relay agents only */
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uint32_t xid; /* unique id */
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uint16_t secs; /* elapsed since client began acquisition/renewal */
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uint16_t flags; /* only one flag so far: */
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#define BROADCAST_FLAG 0x8000 /* "I need broadcast replies" */
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uint32_t ciaddr; /* client IP (if client is in BOUND, RENEW or REBINDING state) */
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uint32_t yiaddr; /* 'your' (client) IP address */
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/* IP address of next server to use in bootstrap, returned in DHCPOFFER, DHCPACK by server */
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uint32_t siaddr_nip;
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uint32_t gateway_nip; /* relay agent IP address */
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uint8_t chaddr[16]; /* link-layer client hardware address (MAC) */
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uint8_t sname[64]; /* server host name (ASCIZ) */
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uint8_t file[128]; /* boot file name (ASCIZ) */
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uint32_t cookie; /* fixed first four option bytes (99,130,83,99 dec) */
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uint8_t options[DHCP_OPTIONS_BUFSIZE];// + CONFIG_UDHCPC_SLACK_FOR_BUGGY_SERVERS];
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};
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#define DHCP_PKT_SNAME_LEN 64
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#define DHCP_PKT_FILE_LEN 128
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#define DHCP_PKT_SNAME_LEN_STR "64"
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#define DHCP_PKT_FILE_LEN_STR "128"
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//struct ip_udp_dhcp_packet {
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// struct ip_hdr ip;
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// struct udp_hdr udp;
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// struct dhcp_packet data;
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//};
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//
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//struct udp_dhcp_packet {
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// struct udp_hdr udp;
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// struct dhcp_packet data;
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//};
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enum {
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// IP_UDP_DHCP_SIZE = sizeof(struct ip_udp_dhcp_packet),// - CONFIG_UDHCPC_SLACK_FOR_BUGGY_SERVERS,
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// UDP_DHCP_SIZE = sizeof(struct udp_dhcp_packet),// - CONFIG_UDHCPC_SLACK_FOR_BUGGY_SERVERS,
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DHCP_SIZE = sizeof(struct dhcp_packet),// - CONFIG_UDHCPC_SLACK_FOR_BUGGY_SERVERS,
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};
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/* Let's see whether compiler understood us right */
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//struct BUG_bad_sizeof_struct_ip_udp_dhcp_packet {
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// char c[IP_UDP_DHCP_SIZE == 576 ? 1 : -1];
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//};
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/*** Options ***/
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enum {
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OPTION_IP = 1,
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OPTION_IP_PAIR,
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OPTION_STRING,
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/* Opts of STRING_HOST type will be sanitized before they are passed
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* to udhcpc script's environment: */
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OPTION_STRING_HOST,
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// OPTION_BOOLEAN,
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OPTION_U8,
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OPTION_U16,
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// OPTION_S16,
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OPTION_U32,
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OPTION_S32,
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OPTION_BIN,
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OPTION_STATIC_ROUTES,
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OPTION_6RD,
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#if ENABLE_FEATURE_UDHCP_RFC3397
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OPTION_DNS_STRING, /* RFC1035 compressed domain name list */
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OPTION_SIP_SERVERS,
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#endif
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OPTION_TYPE_MASK = 0x0f,
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/* Client requests this option by default */
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OPTION_REQ = 0x10,
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/* There can be a list of 1 or more of these */
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OPTION_LIST = 0x20,
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};
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/* DHCP option codes (partial list). See RFC 2132 and
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* http://www.iana.org/assignments/bootp-dhcp-parameters/
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* Commented out options are handled by common option machinery,
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* uncommented ones have special cases (grep for them to see).
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*/
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#define DHCP_PADDING 0x00
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#define DHCP_SUBNET 0x01
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//#define DHCP_TIME_OFFSET 0x02 /* (localtime - UTC_time) in seconds. signed */
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//#define DHCP_ROUTER 0x03
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//#define DHCP_TIME_SERVER 0x04 /* RFC 868 time server (32-bit, 0 = 1.1.1900) */
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//#define DHCP_NAME_SERVER 0x05 /* IEN 116 _really_ ancient kind of NS */
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//#define DHCP_DNS_SERVER 0x06
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//#define DHCP_LOG_SERVER 0x07 /* port 704 UDP log (not syslog)
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//#define DHCP_COOKIE_SERVER 0x08 /* "quote of the day" server */
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//#define DHCP_LPR_SERVER 0x09
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#define DHCP_HOST_NAME 0x0c /* either client informs server or server gives name to client */
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//#define DHCP_BOOT_SIZE 0x0d
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//#define DHCP_DOMAIN_NAME 0x0f /* server gives domain suffix */
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//#define DHCP_SWAP_SERVER 0x10
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//#define DHCP_ROOT_PATH 0x11
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//#define DHCP_IP_TTL 0x17
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//#define DHCP_MTU 0x1a
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//#define DHCP_BROADCAST 0x1c
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//#define DHCP_ROUTES 0x21
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//#define DHCP_NIS_DOMAIN 0x28
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//#define DHCP_NIS_SERVER 0x29
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//#define DHCP_NTP_SERVER 0x2a
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//#define DHCP_WINS_SERVER 0x2c
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#define DHCP_REQUESTED_IP 0x32 /* sent by client if specific IP is wanted */
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#define DHCP_LEASE_TIME 0x33
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#define DHCP_OPTION_OVERLOAD 0x34
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#define DHCP_MESSAGE_TYPE 0x35
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#define DHCP_SERVER_ID 0x36 /* by default server's IP */
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#define DHCP_PARAM_REQ 0x37 /* list of options client wants */
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//#define DHCP_ERR_MESSAGE 0x38 /* error message when sending NAK etc */
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#define DHCP_MAX_SIZE 0x39
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#define DHCP_VENDOR 0x3c /* client's vendor (a string) */
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#define DHCP_CLIENT_ID 0x3d /* by default client's MAC addr, but may be arbitrarily long */
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//#define DHCP_TFTP_SERVER_NAME 0x42 /* same as 'sname' field */
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//#define DHCP_BOOT_FILE 0x43 /* same as 'file' field */
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//#define DHCP_USER_CLASS 0x4d /* RFC 3004. set of LASCII strings. "I am a printer" etc */
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#define DHCP_FQDN 0x51 /* client asks to update DNS to map its FQDN to its new IP */
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//#define DHCP_DOMAIN_SEARCH 0x77 /* RFC 3397. set of ASCIZ string, DNS-style compressed */
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//#define DHCP_SIP_SERVERS 0x78 /* RFC 3361. flag byte, then: 0: domain names, 1: IP addrs */
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//#define DHCP_STATIC_ROUTES 0x79 /* RFC 3442. (mask,ip,router) tuples */
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//#define DHCP_VLAN_ID 0x84 /* 802.1P VLAN ID */
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//#define DHCP_VLAN_PRIORITY 0x85 /* 802.1Q VLAN priority */
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//#define DHCP_PXE_CONF_FILE 0xd1 /* RFC 5071 Configuration File */
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//#define DHCP_MS_STATIC_ROUTES 0xf9 /* Microsoft's pre-RFC 3442 code for 0x79? */
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//#define DHCP_WPAD 0xfc /* MSIE's Web Proxy Autodiscovery Protocol */
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#define DHCP_END 0xff
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/* Offsets in option byte sequence */
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#define OPT_CODE 0
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#define OPT_LEN 1
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#define OPT_DATA 2
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/* Bits in "overload" option */
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#define OPTION_FIELD 0
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#define FILE_FIELD 1
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#define SNAME_FIELD 2
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/* DHCP_MESSAGE_TYPE values */
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#define DHCPDISCOVER 1 /* client -> server */
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#define DHCPOFFER 2 /* client <- server */
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#define DHCPREQUEST 3 /* client -> server */
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#define DHCPDECLINE 4 /* client -> server */
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#define DHCPACK 5 /* client <- server */
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#define DHCPNAK 6 /* client <- server */
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#define DHCPRELEASE 7 /* client -> server */
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#define DHCPINFORM 8 /* client -> server */
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#define DHCP_MINTYPE DHCPDISCOVER
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#define DHCP_MAXTYPE DHCPINFORM
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struct dhcp_optflag {
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uint8_t flags;
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uint8_t code;
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};
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struct option_set {
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uint8_t *data;
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struct option_set *next;
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};
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extern const struct dhcp_optflag dhcp_optflags[];
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extern const char dhcp_option_strings[];
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extern const uint8_t dhcp_option_lengths[];
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unsigned udhcp_option_idx(const char *name);
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uint8_t *udhcp_get_option(struct dhcp_packet *packet, int code);
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int udhcp_end_option(uint8_t *optionptr);
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void udhcp_add_binary_option(struct dhcp_packet *packet, uint8_t *addopt);
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void udhcp_add_simple_option(struct dhcp_packet *packet, uint8_t code, uint32_t data);
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#if ENABLE_FEATURE_UDHCP_RFC3397
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char *dname_dec(const uint8_t *cstr, int clen, const char *pre);
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uint8_t *dname_enc(const uint8_t *cstr, int clen, const char *src, int *retlen);
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#endif
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struct option_set *udhcp_find_option(struct option_set *opt_list, uint8_t code);
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// RFC 2131 Table 5: Fields and options used by DHCP clients
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//
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// Fields 'hops', 'yiaddr', 'siaddr', 'giaddr' are always zero
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//
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// Field DHCPDISCOVER DHCPINFORM DHCPREQUEST DHCPDECLINE DHCPRELEASE
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// ----- ------------ ------------ ----------- ----------- -----------
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// 'xid' selected by client selected by client 'xid' from server selected by client selected by client
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// DHCPOFFER message
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// 'secs' 0 or seconds since 0 or seconds since 0 or seconds since 0 0
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// DHCP process started DHCP process started DHCP process started
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// 'flags' Set 'BROADCAST' Set 'BROADCAST' Set 'BROADCAST' 0 0
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// flag if client flag if client flag if client
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// requires broadcast requires broadcast requires broadcast
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// reply reply reply
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// 'ciaddr' 0 client's IP 0 or client's IP 0 client's IP
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// (BOUND/RENEW/REBIND)
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// 'chaddr' client's MAC client's MAC client's MAC client's MAC client's MAC
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// 'sname' options or sname options or sname options or sname (unused) (unused)
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// 'file' options or file options or file options or file (unused) (unused)
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// 'options' options options options message type opt message type opt
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//
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// Option DHCPDISCOVER DHCPINFORM DHCPREQUEST DHCPDECLINE DHCPRELEASE
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// ------ ------------ ---------- ----------- ----------- -----------
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// Requested IP address MAY MUST NOT MUST (in MUST MUST NOT
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// SELECTING or
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// INIT-REBOOT)
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// MUST NOT (in
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// BOUND or
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// RENEWING)
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// IP address lease time MAY MUST NOT MAY MUST NOT MUST NOT
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// Use 'file'/'sname' fields MAY MAY MAY MAY MAY
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// Client identifier MAY MAY MAY MAY MAY
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// Vendor class identifier MAY MAY MAY MUST NOT MUST NOT
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// Server identifier MUST NOT MUST NOT MUST (after MUST MUST
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// SELECTING)
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// MUST NOT (after
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// INIT-REBOOT,
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// BOUND, RENEWING
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// or REBINDING)
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// Parameter request list MAY MAY MAY MUST NOT MUST NOT
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// Maximum message size MAY MAY MAY MUST NOT MUST NOT
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// Message SHOULD NOT SHOULD NOT SHOULD NOT SHOULD SHOULD
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// Site-specific MAY MAY MAY MUST NOT MUST NOT
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// All others MAY MAY MAY MUST NOT MUST NOT
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/*** Logging ***/
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#if defined CONFIG_UDHCP_DEBUG && CONFIG_UDHCP_DEBUG >= 1
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# define IF_UDHCP_VERBOSE(...) __VA_ARGS__
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extern unsigned dhcp_verbose;
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# define log1(...) do { if (dhcp_verbose >= 1) bb_info_msg(__VA_ARGS__); } while (0)
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# if CONFIG_UDHCP_DEBUG >= 2
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void udhcp_dump_packet(struct dhcp_packet *packet) FAST_FUNC;
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# define log2(...) do { if (dhcp_verbose >= 2) bb_info_msg(__VA_ARGS__); } while (0)
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# else
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# define udhcp_dump_packet(...) ((void)0)
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# define log2(...) ((void)0)
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# endif
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# if CONFIG_UDHCP_DEBUG >= 3
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# define log3(...) do { if (dhcp_verbose >= 3) bb_info_msg(__VA_ARGS__); } while (0)
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# else
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# define log3(...) ((void)0)
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# endif
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#else
|
||||
# define IF_UDHCP_VERBOSE(...)
|
||||
# define udhcp_dump_packet(...) ((void)0)
|
||||
# define log1(...) ((void)0)
|
||||
# define log2(...) ((void)0)
|
||||
# define log3(...) ((void)0)
|
||||
#endif
|
||||
|
||||
//#define UDHCP_DBG
|
||||
|
||||
#ifdef UDHCP_DBG
|
||||
#define UDHCP_DEBUG os_printf
|
||||
#else
|
||||
#define UDHCP_DEBUG(...)
|
||||
#endif
|
||||
|
||||
/*** Other shared functions ***/
|
||||
|
||||
/* 2nd param is "uint32_t*" */
|
||||
int udhcp_str2nip(const char *str, void *arg);
|
||||
/* 2nd param is "struct option_set**" */
|
||||
int udhcp_str2optset(const char *str, void *arg);
|
||||
|
||||
void udhcp_init_header(struct dhcp_packet *packet, char type);
|
||||
|
||||
int udhcp_recv_kernel_packet(struct dhcp_packet *packet, int fd);
|
||||
|
||||
//int udhcp_send_raw_packet(struct dhcp_packet *dhcp_pkt,
|
||||
// uint32_t source_nip, int source_port,
|
||||
// uint32_t dest_nip, int dest_port, const uint8_t *dest_arp,
|
||||
// int ifindex);
|
||||
|
||||
int udhcp_send_kernel_packet(struct dhcp_packet *dhcp_pkt,
|
||||
uint32_t source_nip, int source_port,
|
||||
uint32_t dest_nip, int dest_port);
|
||||
|
||||
void udhcp_sp_setup(void);
|
||||
int udhcp_sp_fd_set(fd_set *rfds, int extra_fd);
|
||||
int udhcp_sp_read(const fd_set *rfds);
|
||||
|
||||
int udhcp_read_interface(const char *interface, int *ifindex, uint32_t *nip, uint8_t *mac);
|
||||
|
||||
int udhcp_listen_socket(/*uint32_t ip,*/ int port, const char *inf);
|
||||
|
||||
/* Returns 1 if no reply received */
|
||||
int arpping(uint32_t test_nip,
|
||||
const uint8_t *safe_mac,
|
||||
uint32_t from_ip,
|
||||
uint8_t *from_mac,
|
||||
const char *interface);
|
||||
|
||||
/* note: ip is a pointer to an IPv6 in network order, possibly misaliged */
|
||||
int sprint_nip6(char *dest, /*const char *pre,*/ const uint8_t *ip);
|
||||
|
||||
//POP_SAVED_FUNCTION_VISIBILITY
|
||||
|
||||
#endif
|
||||
|
|
@ -1,42 +0,0 @@
|
|||
/* vi: set sw=4 ts=4: */
|
||||
/*
|
||||
* Licensed under GPLv2, see file LICENSE in this source tree.
|
||||
*/
|
||||
#ifndef UDHCP_DHCPC_H
|
||||
#define UDHCP_DHCPC_H 1
|
||||
|
||||
//PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
|
||||
|
||||
struct client_config_t {
|
||||
uint8_t client_mac[6]; /* Our mac address */
|
||||
// IF_FEATURE_UDHCP_PORT(uint16_t port;)
|
||||
int ifindex; /* Index number of the interface to use */
|
||||
uint8_t opt_mask[256 / 8]; /* Bitmask of options to send (-O option) */
|
||||
const char *interface; /* The name of the interface to use */
|
||||
char *pidfile; /* Optionally store the process ID */
|
||||
const char *script; /* User script to run at dhcp events */
|
||||
struct option_set *options; /* list of DHCP options to send to server */
|
||||
uint8_t *clientid; /* Optional client id to use */
|
||||
uint8_t *vendorclass; /* Optional vendor class-id to use */
|
||||
uint8_t *hostname; /* Optional hostname to use */
|
||||
uint8_t *fqdn; /* Optional fully qualified domain name to use */
|
||||
|
||||
uint16_t first_secs;
|
||||
uint16_t last_secs;
|
||||
};
|
||||
|
||||
/* server_config sits in 1st half of bb_common_bufsiz1 */
|
||||
#define client_config (*(struct client_config_t*)(&bb_common_bufsiz1[COMMON_BUFSIZE / 2]))
|
||||
|
||||
#if ENABLE_FEATURE_UDHCP_PORT
|
||||
#define CLIENT_PORT (client_config.port)
|
||||
#define CLIENT_PORT6 (client_config.port)
|
||||
#else
|
||||
#define CLIENT_PORT 68
|
||||
#define CLIENT_PORT6 546
|
||||
#endif
|
||||
|
||||
//POP_SAVED_FUNCTION_VISIBILITY
|
||||
|
||||
#endif
|
||||
|
||||
|
|
@ -1,146 +0,0 @@
|
|||
/* vi: set sw=4 ts=4: */
|
||||
/*
|
||||
* Licensed under GPLv2, see file LICENSE in this source tree.
|
||||
*/
|
||||
#ifndef UDHCP_DHCPD_H
|
||||
#define UDHCP_DHCPD_H 1
|
||||
|
||||
//PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
|
||||
|
||||
/* Defaults you may want to tweak */
|
||||
/* Default max_lease_sec */
|
||||
#define DEFAULT_LEASE_TIME (60*60*24 * 10)
|
||||
#define LEASES_FILE CONFIG_DHCPD_LEASES_FILE
|
||||
/* Where to find the DHCP server configuration file */
|
||||
#define DHCPD_CONF_FILE "/etc/udhcpd.conf"
|
||||
|
||||
#ifndef ENABLE_FEATURE_UDHCP_PORT
|
||||
#define ENABLE_FEATURE_UDHCP_PORT 0
|
||||
#endif
|
||||
|
||||
struct static_lease {
|
||||
struct static_lease *next;
|
||||
uint32_t nip;
|
||||
uint8_t mac[6];
|
||||
};
|
||||
|
||||
struct server_config_t {
|
||||
char *interface; /* interface to use */
|
||||
//TODO: ifindex, server_nip, server_mac
|
||||
// are obtained from interface name.
|
||||
// Instead of querying them *once*, create update_server_network_data_cache()
|
||||
// and call it before any usage of these fields.
|
||||
// update_server_network_data_cache() must re-query data
|
||||
// if more than N seconds have passed after last use.
|
||||
int ifindex;
|
||||
uint32_t server_nip;
|
||||
#if ENABLE_FEATURE_UDHCP_PORT
|
||||
uint16_t port;
|
||||
#endif
|
||||
uint8_t server_mac[6]; /* our MAC address (used only for ARP probing) */
|
||||
struct option_set *options; /* list of DHCP options loaded from the config file */
|
||||
/* start,end are in host order: we need to compare start <= ip <= end */
|
||||
uint32_t start_ip; /* start address of leases, in host order */
|
||||
uint32_t end_ip; /* end of leases, in host order */
|
||||
uint32_t max_lease_sec; /* maximum lease time (host order) */
|
||||
uint32_t min_lease_sec; /* minimum lease time a client can request */
|
||||
uint32_t max_leases; /* maximum number of leases (including reserved addresses) */
|
||||
uint32_t auto_time; /* how long should udhcpd wait before writing a config file.
|
||||
* if this is zero, it will only write one on SIGUSR1 */
|
||||
uint32_t decline_time; /* how long an address is reserved if a client returns a
|
||||
* decline message */
|
||||
uint32_t conflict_time; /* how long an arp conflict offender is leased for */
|
||||
uint32_t offer_time; /* how long an offered address is reserved */
|
||||
uint32_t siaddr_nip; /* "next server" bootp option */
|
||||
char *lease_file;
|
||||
char *pidfile;
|
||||
char *notify_file; /* what to run whenever leases are written */
|
||||
char *sname; /* bootp server name */
|
||||
char *boot_file; /* bootp boot file option */
|
||||
struct static_lease *static_leases; /* List of ip/mac pairs to assign static leases */
|
||||
};
|
||||
|
||||
#define server_config (*(struct server_config_t*)&bb_common_bufsiz1)
|
||||
/* client_config sits in 2nd half of bb_common_bufsiz1 */
|
||||
|
||||
#if ENABLE_FEATURE_UDHCP_PORT
|
||||
#define SERVER_PORT (server_config.port)
|
||||
#define SERVER_PORT6 (server_config.port)
|
||||
#else
|
||||
#define SERVER_PORT 67
|
||||
#define SERVER_PORT6 547
|
||||
#endif
|
||||
|
||||
|
||||
typedef uint32_t leasetime_t;
|
||||
typedef int32_t signed_leasetime_t;
|
||||
|
||||
struct dyn_lease {
|
||||
/* Unix time when lease expires. Kept in memory in host order.
|
||||
* When written to file, converted to network order
|
||||
* and adjusted (current time subtracted) */
|
||||
leasetime_t expires;
|
||||
/* "nip": IP in network order */
|
||||
uint32_t lease_nip;
|
||||
/* We use lease_mac[6], since e.g. ARP probing uses
|
||||
* only 6 first bytes anyway. We check received dhcp packets
|
||||
* that their hlen == 6 and thus chaddr has only 6 significant bytes
|
||||
* (dhcp packet has chaddr[16], not [6])
|
||||
*/
|
||||
uint8_t lease_mac[6];
|
||||
char hostname[20];
|
||||
uint8_t pad[2];
|
||||
/* total size is a multiply of 4 */
|
||||
};
|
||||
|
||||
extern struct dyn_lease *g_leases;
|
||||
|
||||
struct dyn_lease *add_lease(
|
||||
const uint8_t *chaddr, uint32_t yiaddr,
|
||||
leasetime_t leasetime,
|
||||
const char *hostname, int hostname_len
|
||||
);
|
||||
int is_expired_lease(struct dyn_lease *lease);
|
||||
struct dyn_lease *find_lease_by_mac(const uint8_t *mac);
|
||||
struct dyn_lease *find_lease_by_nip(uint32_t nip);
|
||||
uint32_t find_free_or_expired_nip(const uint8_t *safe_mac);
|
||||
|
||||
|
||||
/* Config file parser will pass static lease info to this function
|
||||
* which will add it to a data structure that can be searched later */
|
||||
void add_static_lease(struct static_lease **st_lease_pp, uint8_t *mac, uint32_t nip);
|
||||
/* Find static lease IP by mac */
|
||||
uint32_t get_static_nip_by_mac(struct static_lease *st_lease, void *arg);
|
||||
/* Check to see if an IP is reserved as a static IP */
|
||||
int is_nip_reserved(struct static_lease *st_lease, uint32_t nip);
|
||||
/* Print out static leases just to check what's going on (debug code) */
|
||||
#ifdef UDHCP_DBG
|
||||
void log_static_leases(struct static_lease **st_lease_pp);
|
||||
#else
|
||||
# define log_static_leases(st_lease_pp) ((void)0)
|
||||
#endif
|
||||
|
||||
struct dhcp_info{
|
||||
/* start,end are in host order: we need to compare start <= ip <= end */
|
||||
uint32_t start_ip; /* start address of leases, in host order */
|
||||
uint32_t end_ip; /* end of leases, in host order */
|
||||
|
||||
uint32_t max_leases; /* maximum number of leases (including reserved addresses) */
|
||||
uint32_t auto_time; /* how long should udhcpd wait before writing a config file.
|
||||
* if this is zero, it will only write one on SIGUSR1 */
|
||||
uint32_t decline_time; /* how long an address is reserved if a client returns a
|
||||
* decline message */
|
||||
uint32_t conflict_time; /* how long an arp conflict offender is leased for */
|
||||
uint32_t offer_time; /* how long an offered address is reserved */
|
||||
uint32_t max_lease_sec; /* maximum lease time (host order) */
|
||||
uint32_t min_lease_sec; /* minimum lease time a client can request */
|
||||
};
|
||||
|
||||
void read_config(const char *file);
|
||||
void write_leases(void);
|
||||
void read_leases(const char *file);
|
||||
|
||||
void udhcpd_start(void);
|
||||
//POP_SAVED_FUNCTION_VISIBILITY
|
||||
|
||||
#endif
|
||||
BIN
lib/libudhcp.a
BIN
lib/libudhcp.a
Binary file not shown.
Loading…
Reference in a new issue