X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Flhash%2Flhash.h;h=d392d0cd80d7fc89a0061353f0faf2f334d55666;hp=70cbc6dfe70aca179f1a2d6fe239751b61716462;hb=9c52d2cc75c2978dbee5075bfeed9968c68f403d;hpb=78414a6a897db42c9bcf06aa21c705811ab33921

diff --git a/crypto/lhash/lhash.h b/crypto/lhash/lhash.h
index 70cbc6dfe7..d392d0cd80 100644
--- a/crypto/lhash/lhash.h
+++ b/crypto/lhash/lhash.h
@@ -63,24 +63,83 @@
 #ifndef HEADER_LHASH_H
 #define HEADER_LHASH_H
 
+#include <openssl/e_os2.h>
+#ifndef OPENSSL_NO_FP_API
+#include <stdio.h>
+#endif
+
+#ifndef OPENSSL_NO_BIO
+#include <openssl/bio.h>
+#endif
+
 #ifdef  __cplusplus
 extern "C" {
 #endif
 
 typedef struct lhash_node_st
 	{
-	char *data;
+	void *data;
 	struct lhash_node_st *next;
-#ifndef NO_HASH_COMP
+#ifndef OPENSSL_NO_HASH_COMP
 	unsigned long hash;
 #endif
 	} LHASH_NODE;
 
+typedef int (*LHASH_COMP_FN_TYPE)(const void *, const void *);
+typedef unsigned long (*LHASH_HASH_FN_TYPE)(const void *);
+typedef void (*LHASH_DOALL_FN_TYPE)(void *);
+typedef void (*LHASH_DOALL_ARG_FN_TYPE)(void *, void *);
+
+/* Macros for declaring and implementing type-safe wrappers for LHASH callbacks.
+ * This way, callbacks can be provided to LHASH structures without function
+ * pointer casting and the macro-defined callbacks provide per-variable casting
+ * before deferring to the underlying type-specific callbacks. NB: It is
+ * possible to place a "static" in front of both the DECLARE and IMPLEMENT
+ * macros if the functions are strictly internal. */
+
+/* First: "hash" functions */
+#define DECLARE_LHASH_HASH_FN(f_name,o_type) \
+	unsigned long f_name##_LHASH_HASH(const void *);
+#define IMPLEMENT_LHASH_HASH_FN(f_name,o_type) \
+	unsigned long f_name##_LHASH_HASH(const void *arg) { \
+		o_type a = (o_type)arg; \
+		return f_name(a); }
+#define LHASH_HASH_FN(f_name) f_name##_LHASH_HASH
+
+/* Second: "compare" functions */
+#define DECLARE_LHASH_COMP_FN(f_name,o_type) \
+	int f_name##_LHASH_COMP(const void *, const void *);
+#define IMPLEMENT_LHASH_COMP_FN(f_name,o_type) \
+	int f_name##_LHASH_COMP(const void *arg1, const void *arg2) { \
+		o_type a = (o_type)arg1; \
+		o_type b = (o_type)arg2; \
+		return f_name(a,b); }
+#define LHASH_COMP_FN(f_name) f_name##_LHASH_COMP
+
+/* Third: "doall" functions */
+#define DECLARE_LHASH_DOALL_FN(f_name,o_type) \
+	void f_name##_LHASH_DOALL(void *);
+#define IMPLEMENT_LHASH_DOALL_FN(f_name,o_type) \
+	void f_name##_LHASH_DOALL(void *arg) { \
+		o_type a = (o_type)arg; \
+		f_name(a); }
+#define LHASH_DOALL_FN(f_name) f_name##_LHASH_DOALL
+
+/* Fourth: "doall_arg" functions */
+#define DECLARE_LHASH_DOALL_ARG_FN(f_name,o_type,a_type) \
+	void f_name##_LHASH_DOALL_ARG(void *, void *);
+#define IMPLEMENT_LHASH_DOALL_ARG_FN(f_name,o_type,a_type) \
+	void f_name##_LHASH_DOALL_ARG(void *arg1, void *arg2) { \
+		o_type a = (o_type)arg1; \
+		a_type b = (a_type)arg2; \
+		f_name(a,b); }
+#define LHASH_DOALL_ARG_FN(f_name) f_name##_LHASH_DOALL_ARG
+
 typedef struct lhash_st
 	{
 	LHASH_NODE **b;
-	int (*comp)();
-	unsigned long (*hash)();
+	LHASH_COMP_FN_TYPE comp;
+	LHASH_HASH_FN_TYPE hash;
 	unsigned int num_nodes;
 	unsigned int num_alloc_nodes;
 	unsigned int p;
@@ -102,51 +161,37 @@ typedef struct lhash_st
 	unsigned long num_retrieve;
 	unsigned long num_retrieve_miss;
 	unsigned long num_hash_comps;
+
+	int error;
 	} LHASH;
 
 #define LH_LOAD_MULT	256
 
-#ifndef NOPROTO
-LHASH *lh_new(unsigned long (*h)(), int (*c)());
+/* Indicates a malloc() error in the last call, this is only bad
+ * in lh_insert(). */
+#define lh_error(lh)	((lh)->error)
+
+LHASH *lh_new(LHASH_HASH_FN_TYPE h, LHASH_COMP_FN_TYPE c);
 void lh_free(LHASH *lh);
-char *lh_insert(LHASH *lh, char *data);
-char *lh_delete(LHASH *lh, char *data);
-char *lh_retrieve(LHASH *lh, char *data);
-void lh_doall(LHASH *lh, void (*func)(/* char *b */));
-void lh_doall_arg(LHASH *lh, void (*func)(/*char *a,char *b*/),char *arg);
-unsigned long lh_strhash(char *c);
-
-#ifndef NO_FP_API
-void lh_stats(LHASH *lh, FILE *out);
-void lh_node_stats(LHASH *lh, FILE *out);
-void lh_node_usage_stats(LHASH *lh, FILE *out);
-#endif
+void *lh_insert(LHASH *lh, void *data);
+void *lh_delete(LHASH *lh, const void *data);
+void *lh_retrieve(LHASH *lh, const void *data);
+void lh_doall(LHASH *lh, LHASH_DOALL_FN_TYPE func);
+void lh_doall_arg(LHASH *lh, LHASH_DOALL_ARG_FN_TYPE func, void *arg);
+unsigned long lh_strhash(const char *c);
+unsigned long lh_num_items(const LHASH *lh);
 
-#ifdef HEADER_BIO_H
-void lh_stats_bio(LHASH *lh, BIO *out);
-void lh_node_stats_bio(LHASH *lh, BIO *out);
-void lh_node_usage_stats_bio(LHASH *lh, BIO *out);
-#endif
-#else
-LHASH *lh_new();
-void lh_free();
-char *lh_insert();
-char *lh_delete();
-char *lh_retrieve();
-void lh_doall();
-void lh_doall_arg();
-unsigned long lh_strhash();
-
-#ifndef NO_FP_API
-void lh_stats();
-void lh_node_stats();
-void lh_node_usage_stats();
-#endif
-void lh_stats_bio();
-void lh_node_stats_bio();
-void lh_node_usage_stats_bio();
+#ifndef OPENSSL_NO_FP_API
+void lh_stats(const LHASH *lh, FILE *out);
+void lh_node_stats(const LHASH *lh, FILE *out);
+void lh_node_usage_stats(const LHASH *lh, FILE *out);
 #endif
 
+#ifndef OPENSSL_NO_BIO
+void lh_stats_bio(const LHASH *lh, BIO *out);
+void lh_node_stats_bio(const LHASH *lh, BIO *out);
+void lh_node_usage_stats_bio(const LHASH *lh, BIO *out);
+#endif
 #ifdef  __cplusplus
 }
 #endif