--- /dev/null
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <openssl/err.h>
+#include <openssl/lhash.h>
+#include <openssl/objects.h>
+#include <openssl/safestack.h>
+#include <openssl/e_os2.h>
+
+/* Later versions of DEC C has started to add lnkage information to certain
+ * functions, which makes it tricky to use them as values to regular function
+ * pointers. One way is to define a macro that takes care of casting them
+ * correctly.
+ */
+#ifdef OPENSSL_SYS_VMS_DECC
+# define OPENSSL_strcmp (int (*)(const char *,const char *))strcmp
+#else
+# define OPENSSL_strcmp strcmp
+#endif
+
+/* I use the ex_data stuff to manage the identifiers for the obj_name_types
+ * that applications may define. I only really use the free function field.
+ */
+DECLARE_LHASH_OF(OBJ_NAME);
+static LHASH_OF(OBJ_NAME) *names_lh=NULL;
+static int names_type_num=OBJ_NAME_TYPE_NUM;
+
+typedef struct name_funcs_st
+ {
+ unsigned long (*hash_func)(const char *name);
+ int (*cmp_func)(const char *a,const char *b);
+ void (*free_func)(const char *, int, const char *);
+ } NAME_FUNCS;
+
+DECLARE_STACK_OF(NAME_FUNCS)
+IMPLEMENT_STACK_OF(NAME_FUNCS)
+
+static STACK_OF(NAME_FUNCS) *name_funcs_stack;
+
+/* The LHASH callbacks now use the raw "void *" prototypes and do per-variable
+ * casting in the functions. This prevents function pointer casting without the
+ * need for macro-generated wrapper functions. */
+
+/* static unsigned long obj_name_hash(OBJ_NAME *a); */
+static unsigned long obj_name_hash(const void *a_void);
+/* static int obj_name_cmp(OBJ_NAME *a,OBJ_NAME *b); */
+static int obj_name_cmp(const void *a_void,const void *b_void);
+
+static IMPLEMENT_LHASH_HASH_FN(obj_name, OBJ_NAME)
+static IMPLEMENT_LHASH_COMP_FN(obj_name, OBJ_NAME)
+
+int OBJ_NAME_init(void)
+ {
+ if (names_lh != NULL) return(1);
+ MemCheck_off();
+ names_lh=lh_OBJ_NAME_new();
+ MemCheck_on();
+ return(names_lh != NULL);
+ }
+
+int OBJ_NAME_new_index(unsigned long (*hash_func)(const char *),
+ int (*cmp_func)(const char *, const char *),
+ void (*free_func)(const char *, int, const char *))
+ {
+ int ret;
+ int i;
+ NAME_FUNCS *name_funcs;
+
+ if (name_funcs_stack == NULL)
+ {
+ MemCheck_off();
+ name_funcs_stack=sk_NAME_FUNCS_new_null();
+ MemCheck_on();
+ }
+ if (name_funcs_stack == NULL)
+ {
+ /* ERROR */
+ return(0);
+ }
+ ret=names_type_num;
+ names_type_num++;
+ for (i=sk_NAME_FUNCS_num(name_funcs_stack); i<names_type_num; i++)
+ {
+ MemCheck_off();
+ name_funcs = OPENSSL_malloc(sizeof(NAME_FUNCS));
+ MemCheck_on();
+ if (!name_funcs)
+ {
+ OBJerr(OBJ_F_OBJ_NAME_NEW_INDEX,ERR_R_MALLOC_FAILURE);
+ return(0);
+ }
+ name_funcs->hash_func = lh_strhash;
+ name_funcs->cmp_func = OPENSSL_strcmp;
+ name_funcs->free_func = 0; /* NULL is often declared to
+ * ((void *)0), which according
+ * to Compaq C is not really
+ * compatible with a function
+ * pointer. -- Richard Levitte*/
+ MemCheck_off();
+ sk_NAME_FUNCS_push(name_funcs_stack,name_funcs);
+ MemCheck_on();
+ }
+ name_funcs = sk_NAME_FUNCS_value(name_funcs_stack, ret);
+ if (hash_func != NULL)
+ name_funcs->hash_func = hash_func;
+ if (cmp_func != NULL)
+ name_funcs->cmp_func = cmp_func;
+ if (free_func != NULL)
+ name_funcs->free_func = free_func;
+ return(ret);
+ }
+
+/* static int obj_name_cmp(OBJ_NAME *a, OBJ_NAME *b) */
+static int obj_name_cmp(const void *a_void, const void *b_void)
+ {
+ int ret;
+ const OBJ_NAME *a = (const OBJ_NAME *)a_void;
+ const OBJ_NAME *b = (const OBJ_NAME *)b_void;
+
+ ret=a->type-b->type;
+ if (ret == 0)
+ {
+ if ((name_funcs_stack != NULL)
+ && (sk_NAME_FUNCS_num(name_funcs_stack) > a->type))
+ {
+ ret=sk_NAME_FUNCS_value(name_funcs_stack,
+ a->type)->cmp_func(a->name,b->name);
+ }
+ else
+ ret=strcmp(a->name,b->name);
+ }
+ return(ret);
+ }
+
+/* static unsigned long obj_name_hash(OBJ_NAME *a) */
+static unsigned long obj_name_hash(const void *a_void)
+ {
+ unsigned long ret;
+ const OBJ_NAME *a = (const OBJ_NAME *)a_void;
+
+ if ((name_funcs_stack != NULL) && (sk_NAME_FUNCS_num(name_funcs_stack) > a->type))
+ {
+ ret=sk_NAME_FUNCS_value(name_funcs_stack,
+ a->type)->hash_func(a->name);
+ }
+ else
+ {
+ ret=lh_strhash(a->name);
+ }
+ ret^=a->type;
+ return(ret);
+ }
+
+const char *OBJ_NAME_get(const char *name, int type)
+ {
+ OBJ_NAME on,*ret;
+ int num=0,alias;
+
+ if (name == NULL) return(NULL);
+ if ((names_lh == NULL) && !OBJ_NAME_init()) return(NULL);
+
+ alias=type&OBJ_NAME_ALIAS;
+ type&= ~OBJ_NAME_ALIAS;
+
+ on.name=name;
+ on.type=type;
+
+ for (;;)
+ {
+ ret=lh_OBJ_NAME_retrieve(names_lh,&on);
+ if (ret == NULL) return(NULL);
+ if ((ret->alias) && !alias)
+ {
+ if (++num > 10) return(NULL);
+ on.name=ret->data;
+ }
+ else
+ {
+ return(ret->data);
+ }
+ }
+ }
+
+int OBJ_NAME_add(const char *name, int type, const char *data)
+ {
+ OBJ_NAME *onp,*ret;
+ int alias;
+
+ if ((names_lh == NULL) && !OBJ_NAME_init()) return(0);
+
+ alias=type&OBJ_NAME_ALIAS;
+ type&= ~OBJ_NAME_ALIAS;
+
+ onp=(OBJ_NAME *)OPENSSL_malloc(sizeof(OBJ_NAME));
+ if (onp == NULL)
+ {
+ /* ERROR */
+ return(0);
+ }
+
+ onp->name=name;
+ onp->alias=alias;
+ onp->type=type;
+ onp->data=data;
+
+ ret=lh_OBJ_NAME_insert(names_lh,onp);
+ if (ret != NULL)
+ {
+ /* free things */
+ if ((name_funcs_stack != NULL) && (sk_NAME_FUNCS_num(name_funcs_stack) > ret->type))
+ {
+ /* XXX: I'm not sure I understand why the free
+ * function should get three arguments...
+ * -- Richard Levitte
+ */
+ sk_NAME_FUNCS_value(name_funcs_stack,
+ ret->type)->free_func(ret->name,ret->type,ret->data);
+ }
+ OPENSSL_free(ret);
+ }
+ else
+ {
+ if (lh_OBJ_NAME_error(names_lh))
+ {
+ /* ERROR */
+ return(0);
+ }
+ }
+ return(1);
+ }
+
+int OBJ_NAME_remove(const char *name, int type)
+ {
+ OBJ_NAME on,*ret;
+
+ if (names_lh == NULL) return(0);
+
+ type&= ~OBJ_NAME_ALIAS;
+ on.name=name;
+ on.type=type;
+ ret=lh_OBJ_NAME_delete(names_lh,&on);
+ if (ret != NULL)
+ {
+ /* free things */
+ if ((name_funcs_stack != NULL) && (sk_NAME_FUNCS_num(name_funcs_stack) > ret->type))
+ {
+ /* XXX: I'm not sure I understand why the free
+ * function should get three arguments...
+ * -- Richard Levitte
+ */
+ sk_NAME_FUNCS_value(name_funcs_stack,
+ ret->type)->free_func(ret->name,ret->type,ret->data);
+ }
+ OPENSSL_free(ret);
+ return(1);
+ }
+ else
+ return(0);
+ }
+
+struct doall
+ {
+ int type;
+ void (*fn)(const OBJ_NAME *,void *arg);
+ void *arg;
+ };
+
+static void do_all_fn_doall_arg(const OBJ_NAME *name,struct doall *d)
+ {
+ if(name->type == d->type)
+ d->fn(name,d->arg);
+ }
+
+static IMPLEMENT_LHASH_DOALL_ARG_FN(do_all_fn, const OBJ_NAME, struct doall)
+
+void OBJ_NAME_do_all(int type,void (*fn)(const OBJ_NAME *,void *arg),void *arg)
+ {
+ struct doall d;
+
+ d.type=type;
+ d.fn=fn;
+ d.arg=arg;
+
+ lh_OBJ_NAME_doall_arg(names_lh, LHASH_DOALL_ARG_FN(do_all_fn),
+ struct doall, &d);
+ }
+
+struct doall_sorted
+ {
+ int type;
+ int n;
+ const OBJ_NAME **names;
+ };
+
+static void do_all_sorted_fn(const OBJ_NAME *name,void *d_)
+ {
+ struct doall_sorted *d=d_;
+
+ if(name->type != d->type)
+ return;
+
+ d->names[d->n++]=name;
+ }
+
+static int do_all_sorted_cmp(const void *n1_,const void *n2_)
+ {
+ const OBJ_NAME * const *n1=n1_;
+ const OBJ_NAME * const *n2=n2_;
+
+ return strcmp((*n1)->name,(*n2)->name);
+ }
+
+void OBJ_NAME_do_all_sorted(int type,void (*fn)(const OBJ_NAME *,void *arg),
+ void *arg)
+ {
+ struct doall_sorted d;
+ int n;
+
+ d.type=type;
+ d.names=OPENSSL_malloc(lh_OBJ_NAME_num_items(names_lh)*sizeof *d.names);
+ d.n=0;
+ OBJ_NAME_do_all(type,do_all_sorted_fn,&d);
+
+ qsort((void *)d.names,d.n,sizeof *d.names,do_all_sorted_cmp);
+
+ for(n=0 ; n < d.n ; ++n)
+ fn(d.names[n],arg);
+
+ OPENSSL_free((void *)d.names);
+ }
+
+static int free_type;
+
+static void names_lh_free_doall(OBJ_NAME *onp)
+ {
+ if (onp == NULL)
+ return;
+
+ if (free_type < 0 || free_type == onp->type)
+ OBJ_NAME_remove(onp->name,onp->type);
+ }
+
+static IMPLEMENT_LHASH_DOALL_FN(names_lh_free, OBJ_NAME)
+
+static void name_funcs_free(NAME_FUNCS *ptr)
+ {
+ OPENSSL_free(ptr);
+ }
+
+void OBJ_NAME_cleanup(int type)
+ {
+ unsigned long down_load;
+
+ if (names_lh == NULL) return;
+
+ free_type=type;
+ down_load=lh_OBJ_NAME_down_load(names_lh);
+ lh_OBJ_NAME_down_load(names_lh)=0;
+
+ lh_OBJ_NAME_doall(names_lh,LHASH_DOALL_FN(names_lh_free));
+ if (type < 0)
+ {
+ lh_OBJ_NAME_free(names_lh);
+ sk_NAME_FUNCS_pop_free(name_funcs_stack,name_funcs_free);
+ names_lh=NULL;
+ name_funcs_stack = NULL;
+ }
+ else
+ lh_OBJ_NAME_down_load(names_lh)=down_load;
+ }
+
projects / cassiopeia.git / blobdiff