Add these to the mainline.

7 files changed, 508 insertions, 0 deletions

diff --git a/includes/isc-dhcp/boolean.h b/includes/isc-dhcp/boolean.h
new file mode 100644
index 00000000..08d8c245
--- /dev/null
+++ b/includes/isc-dhcp/boolean.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 1998, 1999  Internet Software Consortium.
+ * 
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+
+#ifndef ISC_BOOLEAN_H
+#define ISC_BOOLEAN_H 1
+
+#include <isc-dhcp/lang.h>
+
+ISC_LANG_BEGINDECLS
+
+typedef enum { isc_boolean_false = 0, isc_boolean_true = 1 } isc_boolean_t;
+
+#define ISC_FALSE isc_boolean_false
+#define ISC_TRUE isc_boolean_true
+
+ISC_LANG_ENDDECLS
+
+#endif /* ISC_BOOLEAN_H */
diff --git a/includes/isc-dhcp/dst.h b/includes/isc-dhcp/dst.h
new file mode 100644
index 00000000..65c54d24
--- /dev/null
+++ b/includes/isc-dhcp/dst.h
@@ -0,0 +1,142 @@
+#ifndef DST_H
+#define DST_H
+
+#ifndef HAS_DST_KEY
+typedef struct dst_key {
+	char	*dk_key_name;   /* name of the key */
+	int	dk_key_size;    /* this is the size of the key in bits */
+	int	dk_proto;       /* what protocols this key can be used for */
+	int	dk_alg;         /* algorithm number from key record */
+	unsigned dk_flags;     /* and the flags of the public key */
+	unsigned dk_id;        /* identifier of the key */
+} DST_KEY;
+#endif /* HAS_DST_KEY */
+
+/* 
+ * DST Crypto API defintions 
+ */
+void     dst_init(void);
+int      dst_check_algorithm(const int);
+
+int dst_sign_data(const int mode,	 /* specifies INIT/UPDATE/FINAL/ALL */
+		  DST_KEY *in_key,	 /* the key to use */
+		  void **context,	 /* pointer to state structure */
+		  const u_char *data,	 /* data to be signed */
+		  const unsigned len,	 /* length of input data */
+		  u_char *signature,	 /* buffer to write signature to */
+		  const unsigned sig_len); /* size of output buffer */
+
+int dst_verify_data(const int mode,	 /* specifies INIT/UPDATE/FINAL/ALL */
+		    DST_KEY *in_key,	 /* the key to use */
+		    void **context,	 /* pointer to state structure */
+		    const u_char *data,  /* data to be verified */
+		    const unsigned len,	 /* length of input data */
+		    const u_char *signature,/* buffer containing signature */
+		    const unsigned sig_len);	 /* length of signature */
+
+
+DST_KEY *dst_read_key(const char *in_name,   /* name of key */
+		      const unsigned in_id, /* key tag identifier */
+		      const int in_alg,      /* key algorithm */
+		      const int key_type);   /* Private/PublicKey wanted*/
+
+int      dst_write_key(const DST_KEY *key,  /* key to write out */
+		       const int key_type); /* Public/Private */
+
+DST_KEY *dst_dnskey_to_key(const char *in_name,	/* KEY record name */
+			   const u_char *key,	/* KEY RDATA */
+			   const unsigned len);	/* size of input buffer*/
+
+
+int      dst_key_to_dnskey(const DST_KEY *key,	/* key to translate */
+			   u_char *out_storage,	/* output buffer */
+			   const unsigned out_len); /* size of out_storage*/
+
+
+DST_KEY *dst_buffer_to_key(const char *key_name,  /* name of the key */
+			   const int alg,	  /* algorithm */
+			   const unsigned flags,  /* dns flags */
+			   const int protocol,	  /* dns protocol */
+			   const u_char *key_buf, /* key in dns wire fmt */
+			   const unsigned key_len);	  /* size of key */
+
+
+int     dst_key_to_buffer(DST_KEY *key, u_char *out_buff, unsigned buf_len);
+
+DST_KEY *dst_generate_key(const char *name,    /* name of new key */
+			  const int bits,      /* size of new key */
+			  const int exp,       /* alg dependent parameter*/
+			  const unsigned flags,     /* key DNS flags */
+			  const int protocol, /* key DNS protocol */
+			  const int alg);       /* key algorithm to generate */
+
+DST_KEY *dst_free_key(DST_KEY *f_key);
+int      dst_compare_keys(const DST_KEY *key1, const DST_KEY *key2);
+
+int	dst_sig_size(DST_KEY *key);
+
+int     dst_random(const int mode, unsigned wanted, u_char *outran);
+
+
+/* support for dns key tags/ids */
+u_int16_t dst_s_dns_key_id(const u_char *dns_key_rdata,
+			   const unsigned rdata_len);
+u_int16_t dst_s_id_calc(const u_char *key_data, const unsigned key_len);
+
+/* Used by callers as well as by the library.  */
+#define RAW_KEY_SIZE    8192        /* large enough to store any key */
+
+/* DST_API control flags */
+/* These are used used in functions dst_sign_data and dst_verify_data */
+#define SIG_MODE_INIT		1  /* initalize digest */
+#define SIG_MODE_UPDATE		2  /* add data to digest */
+#define SIG_MODE_FINAL		4  /* generate/verify signature */
+#define SIG_MODE_ALL		(SIG_MODE_INIT|SIG_MODE_UPDATE|SIG_MODE_FINAL)
+
+/* Flags for dst_read_private_key()  */
+#define DST_FORCE_READ		0x1000000
+#define DST_CAN_SIGN		0x010F
+#define DST_NO_AUTHEN		0x8000
+#define DST_EXTEND_FLAG         0x1000
+#define DST_STANDARD		0
+#define DST_PRIVATE             0x2000000
+#define DST_PUBLIC              0x4000000
+#define DST_RAND_SEMI           1
+#define DST_RAND_STD            2
+#define DST_RAND_KEY            3
+#define DST_RAND_DSS            4
+
+
+/* DST algorithm codes */
+#define KEY_RSA			1
+#define KEY_DH			2
+#define KEY_DSA			3
+#define KEY_PRIVATE		254
+#define KEY_EXPAND		255
+#define KEY_HMAC_MD5		157
+#define KEY_HMAC_SHA1		158
+#define UNKNOWN_KEYALG		0
+#define DST_MAX_ALGS            KEY_HMAC_SHA1
+
+/* DST constants to locations in KEY record  changes in new KEY record */
+#define DST_FLAGS_SIZE		2
+#define DST_KEY_PROT		2
+#define DST_KEY_ALG		3
+#define DST_EXT_FLAG            4
+#define DST_KEY_START		4
+
+#ifndef SIGN_F_NOKEY 
+#define SIGN_F_NOKEY		0xC000
+#endif
+
+/* error codes from dst routines */
+#define SIGN_INIT_FAILURE	(-23)
+#define SIGN_UPDATE_FAILURE	(-24)
+#define SIGN_FINAL_FAILURE	(-25)
+#define VERIFY_INIT_FAILURE	(-26)
+#define VERIFY_UPDATE_FAILURE	(-27)
+#define VERIFY_FINAL_FAILURE	(-28)
+#define MISSING_KEY_OR_SIGNATURE (-30)
+#define UNSUPPORTED_KEYALG	(-31)
+
+#endif /* DST_H */
diff --git a/includes/isc-dhcp/int.h b/includes/isc-dhcp/int.h
new file mode 100644
index 00000000..98159f53
--- /dev/null
+++ b/includes/isc-dhcp/int.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 1999  Internet Software Consortium.
+ * 
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+
+#ifndef ISC_INT_H
+#define ISC_INT_H 1
+
+#include <isc-dhcp/lang.h>
+
+ISC_LANG_BEGINDECLS
+
+typedef char				isc_int8_t;
+typedef unsigned char			isc_uint8_t;
+typedef short				isc_int16_t;
+typedef unsigned short			isc_uint16_t;
+typedef int				isc_int32_t;
+typedef unsigned int			isc_uint32_t;
+typedef long long			isc_int64_t;
+typedef unsigned long long		isc_uint64_t;
+
+ISC_LANG_ENDDECLS
+
+#endif /* ISC_INT_H */
diff --git a/includes/isc-dhcp/lang.h b/includes/isc-dhcp/lang.h
new file mode 100644
index 00000000..3edeb72d
--- /dev/null
+++ b/includes/isc-dhcp/lang.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 1999  Internet Software Consortium.
+ * 
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+
+#ifndef ISC_LANG_H
+#define ISC_LANG_H 1
+
+#ifdef __cplusplus
+#define ISC_LANG_BEGINDECLS	extern "C" {
+#define ISC_LANG_ENDDECLS	}
+#else
+#define ISC_LANG_BEGINDECLS
+#define ISC_LANG_ENDDECLS
+#endif
+
+#endif /* ISC_LANG_H */
diff --git a/includes/isc-dhcp/list.h b/includes/isc-dhcp/list.h
new file mode 100644
index 00000000..d9660088
--- /dev/null
+++ b/includes/isc-dhcp/list.h
@@ -0,0 +1,116 @@
+/*
+ * Copyright (C) 1997, 1999  Internet Software Consortium.
+ * 
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+
+#ifndef ISC_LIST_H
+#define ISC_LIST_H 1
+
+#define ISC_LIST(type) struct { type *head, *tail; }
+#define ISC_LIST_INIT(list) \
+	do { (list).head = NULL; (list).tail = NULL; } while (0)
+
+#define ISC_LINK(type) struct { type *prev, *next; }
+#define ISC_LINK_INIT(elt, link) \
+	do { \
+		(elt)->link.prev = (void *)(-1); \
+		(elt)->link.next = (void *)(-1); \
+	} while (0)
+#define ISC_LINK_LINKED(elt, link) ((elt)->link.prev != (void *)(-1))
+
+#define ISC_LIST_HEAD(list) ((list).head)
+#define ISC_LIST_TAIL(list) ((list).tail)
+#define ISC_LIST_EMPTY(list) ((list).head == NULL)
+
+#define ISC_LIST_PREPEND(list, elt, link) \
+	do { \
+		if ((list).head != NULL) \
+			(list).head->link.prev = (elt); \
+		else \
+			(list).tail = (elt); \
+		(elt)->link.prev = NULL; \
+		(elt)->link.next = (list).head; \
+		(list).head = (elt); \
+	} while (0)
+
+#define ISC_LIST_APPEND(list, elt, link) \
+	do { \
+		if ((list).tail != NULL) \
+			(list).tail->link.next = (elt); \
+		else \
+			(list).head = (elt); \
+		(elt)->link.prev = (list).tail; \
+		(elt)->link.next = NULL; \
+		(list).tail = (elt); \
+	} while (0)
+
+#define ISC_LIST_UNLINK(list, elt, link) \
+	do { \
+		if ((elt)->link.next != NULL) \
+			(elt)->link.next->link.prev = (elt)->link.prev; \
+		else \
+			(list).tail = (elt)->link.prev; \
+		if ((elt)->link.prev != NULL) \
+			(elt)->link.prev->link.next = (elt)->link.next; \
+		else \
+			(list).head = (elt)->link.next; \
+		(elt)->link.prev = (void *)(-1); \
+		(elt)->link.next = (void *)(-1); \
+	} while (0)
+
+#define ISC_LIST_PREV(elt, link) ((elt)->link.prev)
+#define ISC_LIST_NEXT(elt, link) ((elt)->link.next)
+
+#define ISC_LIST_INSERTBEFORE(list, before, elt, link) \
+	do { \
+		if ((before)->link.prev == NULL) \
+			ISC_LIST_PREPEND(list, elt, link); \
+		else { \
+			(elt)->link.prev = (before)->link.prev; \
+			(before)->link.prev = (elt); \
+			(elt)->link.prev->link.next = (elt); \
+			(elt)->link.next = (before); \
+		} \
+	} while (0)
+
+#define ISC_LIST_INSERTAFTER(list, after, elt, link) \
+	do { \
+		if ((after)->link.next == NULL) \
+			ISC_LIST_APPEND(list, elt, link); \
+		else { \
+			(elt)->link.next = (after)->link.next; \
+			(after)->link.next = (elt); \
+			(elt)->link.next->link.prev = (elt); \
+			(elt)->link.prev = (after); \
+		} \
+	} while (0)
+
+#define ISC_LIST_APPENDLIST(list1, list2, link) \
+	do { \
+		if (ISC_LIST_EMPTY(list1)) \
+			(list1) = (list2); \
+		else if (!ISC_LIST_EMPTY(list2)) { \
+			(list1).tail->link.next = (list2).head; \
+			(list2).head->link.prev = (list1).tail; \
+			(list1).tail = (list2).tail; \
+			(list2).head = NULL; \
+			(list2).tail = NULL; \
+		} \
+	} while (0)
+
+#define ISC_LIST_ENQUEUE(list, elt, link) ISC_LIST_APPEND(list, elt, link)
+#define ISC_LIST_DEQUEUE(list, elt, link) ISC_LIST_UNLINK(list, elt, link)
+
+#endif /* ISC_LIST_H */
diff --git a/includes/isc-dhcp/result.h b/includes/isc-dhcp/result.h
new file mode 100644
index 00000000..a2de1fcd
--- /dev/null
+++ b/includes/isc-dhcp/result.h
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 1998, 1999  Internet Software Consortium.
+ * 
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+
+#ifndef ISC_RESULT_H
+#define ISC_RESULT_H 1
+
+#include <isc-dhcp/boolean.h>
+#include <isc-dhcp/lang.h>
+#include <isc-dhcp/list.h>
+#include <isc-dhcp/types.h>
+
+ISC_LANG_BEGINDECLS
+
+typedef enum {
+	ISC_R_SUCCESS = 0,
+	ISC_R_NOMEMORY = 1,
+	ISC_R_TIMEDOUT = 2,
+	ISC_R_NOTHREADS = 3,
+	ISC_R_ADDRNOTAVAIL = 4,
+	ISC_R_ADDRINUSE = 5,
+	ISC_R_NOPERM = 6,
+	ISC_R_NOCONN = 7,
+	ISC_R_NETUNREACH = 8,
+	ISC_R_HOSTUNREACH = 9,
+	ISC_R_NETDOWN = 10,
+	ISC_R_HOSTDOWN = 11,
+	ISC_R_CONNREFUSED = 12,
+	ISC_R_NORESOURCES = 13,
+	ISC_R_EOF = 14,
+	ISC_R_BOUND = 15,
+	ISC_R_TASKDONE = 16,
+	ISC_R_LOCKBUSY = 17,
+	ISC_R_EXISTS = 18,
+	ISC_R_NOSPACE = 19,
+	ISC_R_CANCELED = 20,
+	ISC_R_TASKNOSEND = 21,
+	ISC_R_SHUTTINGDOWN = 22,
+	ISC_R_NOTFOUND = 23,
+	ISC_R_UNEXPECTEDEND = 24,
+	ISC_R_FAILURE = 25,
+	ISC_R_IOERROR = 26,
+	ISC_R_NOTIMPLEMENTED = 27,
+	ISC_R_UNBALANCED = 28,
+	ISC_R_NOMORE = 29,
+	ISC_R_INVALIDFILE = 30,
+	ISC_R_BADBASE64 = 31,
+	ISC_R_UNEXPECTEDTOKEN = 32,
+	ISC_R_QUOTA = 33,
+	ISC_R_UNEXPECTED = 34,
+	ISC_R_ALREADYRUNNING = 35,
+	ISC_R_HOSTUNKNOWN = 36,
+	ISC_R_VERSIONMISMATCH = 37,
+	ISC_R_PROTOCOLERROR = 38,
+	ISC_R_INVALIDARG = 39,
+	ISC_R_NOTCONNECTED = 40,
+	ISC_R_NOTYET = 41,
+	ISC_R_UNCHANGED = 42,
+	ISC_R_MULTIPLE = 43,
+	ISC_R_KEYCONFLICT = 44,
+	ISC_R_BADPARSE = 45,
+	ISC_R_NOKEYS = 46,
+	ISC_R_KEY_UNKNOWN = 47,
+	ISC_R_INVALIDKEY = 48,
+	ISC_R_INCOMPLETE = 49,
+	ISC_R_FORMERR = 50,
+	ISC_R_SERVFAIL = 51,
+	ISC_R_NXDOMAIN = 52,
+	ISC_R_NOTIMPL = 53,
+	ISC_R_REFUSED = 54,
+	ISC_R_YXDOMAIN = 55,
+	ISC_R_YXRRSET = 56,
+	ISC_R_NXRRSET = 57,
+	ISC_R_NOTAUTH = 58,
+	ISC_R_NOTZONE = 59,
+	ISC_R_BADSIG = 60,
+	ISC_R_BADKEY = 61,
+	ISC_R_BADTIME = 62,
+	ISC_R_NOROOTZONE = 63,
+	ISC_R_DESTADDRREQ = 64,
+	ISC_R_CROSSZONE = 65,
+	ISC_R_NO_TSIG = 66,
+	ISC_R_NOT_EQUAL = 67,
+	ISC_R_CONNRESET = 68,
+	ISC_R_UNKNOWNATTRIBUTE = 69
+} isc_result_t;
+
+
+#define ISC_R_NRESULTS 			70	/* Number of results */
+
+const char *		isc_result_totext(isc_result_t);
+isc_result_t		isc_result_register(unsigned int base,
+					    unsigned int nresults,
+					    char **text,
+					    isc_msgcat_t *msgcat,
+					    int set);
+
+ISC_LANG_ENDDECLS
+
+#endif /* ISC_RESULT_H */
diff --git a/includes/isc-dhcp/types.h b/includes/isc-dhcp/types.h
new file mode 100644
index 00000000..862bd376
--- /dev/null
+++ b/includes/isc-dhcp/types.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 1999  Internet Software Consortium.
+ * 
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+
+#ifndef ISC_TYPES_H
+#define ISC_TYPES_H 1
+
+#include <isc-dhcp/int.h>
+#include <isc-dhcp/boolean.h>
+#include <isc-dhcp/list.h>
+
+/***
+ *** Core Types.
+ ***/
+
+typedef struct isc_mem			isc_mem_t;
+typedef struct isc_mempool		isc_mempool_t;
+typedef struct isc_msgcat		isc_msgcat_t;
+typedef unsigned int			isc_eventtype_t;
+typedef struct isc_event		isc_event_t;
+typedef struct isc_task			isc_task_t;
+typedef struct isc_taskmgr		isc_taskmgr_t;
+typedef struct isc_rwlock		isc_rwlock_t;
+
+typedef void (*isc_taskaction_t)(isc_task_t *, isc_event_t *);
+
+#endif /* ISC_TYPES_H */