uint32_t yiaddr; /* 'your' (client) IP address */
/* IP address of next server to use in bootstrap, returned in DHCPOFFER, DHCPACK by server */
uint32_t siaddr_nip;
- uint32_t gateway_nip; /* relay agent IP address */
+ uint32_t gateway_nip; /* aka 'giaddr': relay agent IP address */
uint8_t chaddr[16]; /* link-layer client hardware address (MAC) */
uint8_t sname[64]; /* server host name (ASCIZ) */
uint8_t file[128]; /* boot file name (ASCIZ) */
OPTION_BIN,
OPTION_STATIC_ROUTES,
OPTION_6RD,
-#if ENABLE_FEATURE_UDHCP_RFC3397
+#if ENABLE_FEATURE_UDHCP_RFC3397 || ENABLE_FEATURE_UDHCPC6_RFC3646 || ENABLE_FEATURE_UDHCPC6_RFC4704
OPTION_DNS_STRING, /* RFC1035 compressed domain name list */
+#endif
+#if ENABLE_FEATURE_UDHCP_RFC3397
OPTION_SIP_SERVERS,
#endif
//#define DHCP_TIME_SERVER 0x04 /* RFC 868 time server (32-bit, 0 = 1.1.1900) */
//#define DHCP_NAME_SERVER 0x05 /* IEN 116 _really_ ancient kind of NS */
//#define DHCP_DNS_SERVER 0x06
-//#define DHCP_LOG_SERVER 0x07 /* port 704 UDP log (not syslog)
+//#define DHCP_LOG_SERVER 0x07 /* port 704 UDP log (not syslog) */
//#define DHCP_COOKIE_SERVER 0x08 /* "quote of the day" server */
//#define DHCP_LPR_SERVER 0x09
-#define DHCP_HOST_NAME 0x0c /* either client informs server or server gives name to client */
+#define DHCP_HOST_NAME 0x0c /* 12: either client informs server or server gives name to client */
//#define DHCP_BOOT_SIZE 0x0d
-//#define DHCP_DOMAIN_NAME 0x0f /* server gives domain suffix */
+//#define DHCP_DOMAIN_NAME 0x0f /* 15: server gives domain suffix */
//#define DHCP_SWAP_SERVER 0x10
//#define DHCP_ROOT_PATH 0x11
//#define DHCP_IP_TTL 0x17
//#define DHCP_NIS_SERVER 0x29
//#define DHCP_NTP_SERVER 0x2a
//#define DHCP_WINS_SERVER 0x2c
-#define DHCP_REQUESTED_IP 0x32 /* sent by client if specific IP is wanted */
-#define DHCP_LEASE_TIME 0x33
-#define DHCP_OPTION_OVERLOAD 0x34
-#define DHCP_MESSAGE_TYPE 0x35
-#define DHCP_SERVER_ID 0x36 /* by default server's IP */
-#define DHCP_PARAM_REQ 0x37 /* list of options client wants */
-//#define DHCP_ERR_MESSAGE 0x38 /* error message when sending NAK etc */
-#define DHCP_MAX_SIZE 0x39
-#define DHCP_VENDOR 0x3c /* client's vendor (a string) */
-#define DHCP_CLIENT_ID 0x3d /* by default client's MAC addr, but may be arbitrarily long */
-//#define DHCP_TFTP_SERVER_NAME 0x42 /* same as 'sname' field */
-//#define DHCP_BOOT_FILE 0x43 /* same as 'file' field */
-//#define DHCP_USER_CLASS 0x4d /* RFC 3004. set of LASCII strings. "I am a printer" etc */
-#define DHCP_FQDN 0x51 /* client asks to update DNS to map its FQDN to its new IP */
-//#define DHCP_DOMAIN_SEARCH 0x77 /* RFC 3397. set of ASCIZ string, DNS-style compressed */
-//#define DHCP_SIP_SERVERS 0x78 /* RFC 3361. flag byte, then: 0: domain names, 1: IP addrs */
-//#define DHCP_STATIC_ROUTES 0x79 /* RFC 3442. (mask,ip,router) tuples */
-//#define DHCP_VLAN_ID 0x84 /* 802.1P VLAN ID */
-//#define DHCP_VLAN_PRIORITY 0x85 /* 802.1Q VLAN priority */
-//#define DHCP_PXE_CONF_FILE 0xd1 /* RFC 5071 Configuration File */
-//#define DHCP_PXE_PATH_PREFIX 0xd2 /* RFC 5071 Configuration File */
-//#define DHCP_MS_STATIC_ROUTES 0xf9 /* Microsoft's pre-RFC 3442 code for 0x79? */
-//#define DHCP_WPAD 0xfc /* MSIE's Web Proxy Autodiscovery Protocol */
-#define DHCP_END 0xff
+#define DHCP_REQUESTED_IP 0x32 /* 50: sent by client if specific IP is wanted */
+#define DHCP_LEASE_TIME 0x33 /* 51: */
+#define DHCP_OPTION_OVERLOAD 0x34 /* 52: */
+#define DHCP_MESSAGE_TYPE 0x35 /* 53: */
+#define DHCP_SERVER_ID 0x36 /* 54: server's IP */
+#define DHCP_PARAM_REQ 0x37 /* 55: list of options client wants */
+//#define DHCP_ERR_MESSAGE 0x38 /* 56: error message when sending NAK etc */
+#define DHCP_MAX_SIZE 0x39 /* 57: */
+#define DHCP_VENDOR 0x3c /* 60: client's vendor (a string) */
+#define DHCP_CLIENT_ID 0x3d /* 61: by default client's MAC addr, but may be arbitrarily long */
+//#define DHCP_TFTP_SERVER_NAME 0x42 /* 66: same as 'sname' field */
+//#define DHCP_BOOT_FILE 0x43 /* 67: same as 'file' field */
+//#define DHCP_USER_CLASS 0x4d /* 77: RFC 3004. set of LASCII strings. "I am a printer" etc */
+#define DHCP_FQDN 0x51 /* 81: client asks to update DNS to map its FQDN to its new IP */
+//#define DHCP_PCODE 0x64 /* 100: RFC 4833. IEEE 1003.1 TZ string */
+//#define DHCP_TCODE 0x65 /* 101: RFC 4833. Reference to the TZ database string */
+//#define DHCP_DOMAIN_SEARCH 0x77 /* 119: RFC 3397. set of ASCIZ string, DNS-style compressed */
+//#define DHCP_SIP_SERVERS 0x78 /* 120: RFC 3361. flag byte, then: 0: domain names, 1: IP addrs */
+//#define DHCP_STATIC_ROUTES 0x79 /* 121: RFC 3442. (mask,ip,router) tuples */
+//#define DHCP_VLAN_ID 0x84 /* 132: 802.1P VLAN ID */
+//#define DHCP_VLAN_PRIORITY 0x85 /* 133: 802.1Q VLAN priority */
+//#define DHCP_PXE_CONF_FILE 0xd1 /* 209: RFC 5071 Configuration file */
+//#define DHCP_PXE_PATH_PREFIX 0xd2 /* 210: RFC 5071 Path prefix */
+//#define DHCP_REBOOT_TIME 0xd3 /* 211: RFC 5071 Reboot time */
+//#define DHCP_MS_STATIC_ROUTES 0xf9 /* 249: Microsoft's pre-RFC 3442 code for 0x79? */
+//#define DHCP_WPAD 0xfc /* 252: MSIE's Web Proxy Autodiscovery Protocol */
+#define DHCP_END 0xff /* 255: */
/* Offsets in option byte sequence */
#define OPT_CODE 0
#define OPT_LEN 1
#define OPT_DATA 2
+/* Offsets in option byte sequence for DHCPv6 */
+#define D6_OPT_CODE 0
+#define D6_OPT_LEN 2
+#define D6_OPT_DATA 4
/* Bits in "overload" option */
#define OPTION_FIELD 0
#define FILE_FIELD 1
struct option_set *next;
};
+#if ENABLE_UDHCPC || ENABLE_UDHCPD
extern const struct dhcp_optflag dhcp_optflags[];
extern const char dhcp_option_strings[] ALIGN1;
+#endif
extern const uint8_t dhcp_option_lengths[] ALIGN1;
-unsigned FAST_FUNC udhcp_option_idx(const char *name);
+unsigned FAST_FUNC udhcp_option_idx(const char *name, const char *option_strings);
uint8_t *udhcp_get_option(struct dhcp_packet *packet, int code) FAST_FUNC;
+/* Same as above + ensures that option length is 4 bytes
+ * (returns NULL if size is different)
+ */
+uint8_t *udhcp_get_option32(struct dhcp_packet *packet, int code) FAST_FUNC;
int udhcp_end_option(uint8_t *optionptr) FAST_FUNC;
void udhcp_add_binary_option(struct dhcp_packet *packet, uint8_t *addopt) FAST_FUNC;
+#if ENABLE_UDHCPC || ENABLE_UDHCPD
void udhcp_add_simple_option(struct dhcp_packet *packet, uint8_t code, uint32_t data) FAST_FUNC;
-#if ENABLE_FEATURE_UDHCP_RFC3397
+#endif
+#if ENABLE_FEATURE_UDHCP_RFC3397 || ENABLE_FEATURE_UDHCPC6_RFC3646 || ENABLE_FEATURE_UDHCPC6_RFC4704
char *dname_dec(const uint8_t *cstr, int clen, const char *pre) FAST_FUNC;
-uint8_t *dname_enc(const uint8_t *cstr, int clen, const char *src, int *retlen) FAST_FUNC;
+uint8_t *dname_enc(/*const uint8_t *cstr, int clen,*/ const char *src, int *retlen) FAST_FUNC;
#endif
struct option_set *udhcp_find_option(struct option_set *opt_list, uint8_t code) FAST_FUNC;
-
// RFC 2131 Table 5: Fields and options used by DHCP clients
//
-// Fields 'hops', 'yiaddr', 'siaddr', 'giaddr' are always zero
+// Fields 'hops', 'yiaddr', 'siaddr', 'giaddr' are always zero, 'chaddr' is always client's MAC
//
// Field DHCPDISCOVER DHCPINFORM DHCPREQUEST DHCPDECLINE DHCPRELEASE
// ----- ------------ ------------ ----------- ----------- -----------
// 'secs' 0 or seconds since 0 or seconds since 0 or seconds since 0 0
// DHCP process started DHCP process started DHCP process started
// 'flags' Set 'BROADCAST' Set 'BROADCAST' Set 'BROADCAST' 0 0
-// flag if client flag if client flag if client
-// requires broadcast requires broadcast requires broadcast
-// reply reply reply
+// flag if client needs flag if client needs flag if client needs
+// broadcast reply broadcast reply broadcast reply
// 'ciaddr' 0 client's IP 0 or client's IP 0 client's IP
// (BOUND/RENEW/REBIND)
-// 'chaddr' client's MAC client's MAC client's MAC client's MAC client's MAC
// 'sname' options or sname options or sname options or sname (unused) (unused)
// 'file' options or file options or file options or file (unused) (unused)
// 'options' options options options message type opt message type opt
//
-// Option DHCPDISCOVER DHCPINFORM DHCPREQUEST DHCPDECLINE DHCPRELEASE
-// ------ ------------ ---------- ----------- ----------- -----------
-// Requested IP address MAY MUST NOT MUST (in MUST MUST NOT
-// SELECTING or
-// INIT-REBOOT)
-// MUST NOT (in
-// BOUND or
-// RENEWING)
-// IP address lease time MAY MUST NOT MAY MUST NOT MUST NOT
-// Use 'file'/'sname' fields MAY MAY MAY MAY MAY
-// Client identifier MAY MAY MAY MAY MAY
-// Vendor class identifier MAY MAY MAY MUST NOT MUST NOT
-// Server identifier MUST NOT MUST NOT MUST (after MUST MUST
-// SELECTING)
+// Option DHCPDISCOVER DHCPINFORM DHCPREQUEST DHCPDECLINE DHCPRELEASE
+// ------ ------------ ---------- ----------- ----------- -----------
+// Requested IP address MAY MUST NOT MUST (in SELECTING MUST MUST NOT
+// or INIT-REBOOT)
+// MUST NOT (in BOUND
+// or RENEWING)
+// IP address lease time MAY MUST NOT MAY MUST NOT MUST NOT
+// Use 'file'/'sname' fields MAY MAY MAY MAY MAY
+// Client identifier MAY MAY MAY MAY MAY
+// Vendor class identifier MAY MAY MAY MUST NOT MUST NOT
+// Server identifier MUST NOT MUST NOT MUST (after SELECTING) MUST MUST
// MUST NOT (after
-// INIT-REBOOT,
-// BOUND, RENEWING
-// or REBINDING)
-// Parameter request list MAY MAY MAY MUST NOT MUST NOT
-// Maximum message size MAY MAY MAY MUST NOT MUST NOT
-// Message SHOULD NOT SHOULD NOT SHOULD NOT SHOULD SHOULD
-// Site-specific MAY MAY MAY MUST NOT MUST NOT
-// All others MAY MAY MAY MUST NOT MUST NOT
-
+// INIT-REBOOT, BOUND,
+// RENEWING or REBINDING)
+// Parameter request list MAY MAY MAY MUST NOT MUST NOT
+// Maximum message size MAY MAY MAY MUST NOT MUST NOT
+// Message SHOULD NOT SHOULD NOT SHOULD NOT SHOULD SHOULD
+// Site-specific MAY MAY MAY MUST NOT MUST NOT
+// All others MAY MAY MAY MUST NOT MUST NOT
/*** Logging ***/
#if defined CONFIG_UDHCP_DEBUG && CONFIG_UDHCP_DEBUG >= 1
# define IF_UDHCP_VERBOSE(...) __VA_ARGS__
extern unsigned dhcp_verbose;
-# define log1(...) do { if (dhcp_verbose >= 1) bb_error_msg(__VA_ARGS__); } while (0)
+# define log1(...) do { if (dhcp_verbose >= 1) bb_info_msg(__VA_ARGS__); } while (0)
+# define log1s(msg) do { if (dhcp_verbose >= 1) bb_simple_info_msg(msg); } while (0)
# if CONFIG_UDHCP_DEBUG >= 2
void udhcp_dump_packet(struct dhcp_packet *packet) FAST_FUNC;
-# define log2(...) do { if (dhcp_verbose >= 2) bb_error_msg(__VA_ARGS__); } while (0)
+# define log2(...) do { if (dhcp_verbose >= 2) bb_info_msg(__VA_ARGS__); } while (0)
+# define log2s(msg) do { if (dhcp_verbose >= 2) bb_simple_info_msg(msg); } while (0)
# else
# define udhcp_dump_packet(...) ((void)0)
# define log2(...) ((void)0)
+# define log2s(msg) ((void)0)
# endif
# if CONFIG_UDHCP_DEBUG >= 3
-# define log3(...) do { if (dhcp_verbose >= 3) bb_error_msg(__VA_ARGS__); } while (0)
+# define log3(...) do { if (dhcp_verbose >= 3) bb_info_msg(__VA_ARGS__); } while (0)
+# define log3s(msg) do { if (dhcp_verbose >= 3) bb_simple_info_msg(msg); } while (0)
# else
# define log3(...) ((void)0)
+# define log3s(msg) ((void)0)
# endif
#else
# define IF_UDHCP_VERBOSE(...)
# define udhcp_dump_packet(...) ((void)0)
# define log1(...) ((void)0)
+# define log1s(msg) ((void)0)
# define log2(...) ((void)0)
+# define log2s(msg) ((void)0)
# define log3(...) ((void)0)
+# define log3s(msg) ((void)0)
#endif
+#if defined(__mips__)
+/*
+ * The 'simple' message functions have a negative impact on the size of the
+ * DHCP code when compiled for MIPS, so don't use them in this case.
+ */
+#define bb_simple_info_msg bb_info_msg
+#define bb_simple_error_msg bb_error_msg
+#define bb_simple_perror_msg_and_die bb_perror_msg_and_die
+#undef log1s
+#define log1s log1
+#endif
/*** Other shared functions ***/
/* 2nd param is "uint32_t*" */
int FAST_FUNC udhcp_str2nip(const char *str, void *arg);
/* 2nd param is "struct option_set**" */
-int FAST_FUNC udhcp_str2optset(const char *str, void *arg);
+#if !ENABLE_UDHCPC6
+#define udhcp_str2optset(str, arg, optflags, option_strings, dhcpv6) \
+ udhcp_str2optset(str, arg, optflags, option_strings)
+#endif
+int FAST_FUNC udhcp_str2optset(const char *str,
+ void *arg,
+ const struct dhcp_optflag *optflags,
+ const char *option_strings,
+ bool dhcpv6);
+#if ENABLE_UDHCPC || ENABLE_UDHCPD
void udhcp_init_header(struct dhcp_packet *packet, char type) FAST_FUNC;
+#endif
int udhcp_recv_kernel_packet(struct dhcp_packet *packet, int fd) FAST_FUNC;
uint32_t dest_nip, int dest_port) FAST_FUNC;
void udhcp_sp_setup(void) FAST_FUNC;
-int udhcp_sp_fd_set(fd_set *rfds, int extra_fd) FAST_FUNC;
-int udhcp_sp_read(const fd_set *rfds) FAST_FUNC;
+void udhcp_sp_fd_set(struct pollfd *pfds, int extra_fd) FAST_FUNC;
+int udhcp_sp_read(void) FAST_FUNC;
int udhcp_read_interface(const char *interface, int *ifindex, uint32_t *nip, uint8_t *mac) FAST_FUNC;
projects / oweals / busybox.git / blobdiff