5 #include <openssl/lhash.h>
6 #include <openssl/objects.h>
7 #include <openssl/safestack.h>
9 /* I use the ex_data stuff to manage the identifiers for the obj_name_types
10 * that applications may define. I only really use the free function field.
12 static LHASH *names_lh=NULL;
13 static int names_type_num=OBJ_NAME_TYPE_NUM;
15 typedef struct name_funcs_st
17 unsigned long (*hash_func)();
22 DECLARE_STACK_OF(NAME_FUNCS)
23 IMPLEMENT_STACK_OF(NAME_FUNCS)
25 static STACK_OF(NAME_FUNCS) *name_funcs_stack;
27 static unsigned long obj_name_hash(OBJ_NAME *a);
28 static int obj_name_cmp(OBJ_NAME *a,OBJ_NAME *b);
30 int OBJ_NAME_init(void)
32 if (names_lh != NULL) return(1);
34 names_lh=lh_new(obj_name_hash,obj_name_cmp);
36 return(names_lh != NULL);
39 int OBJ_NAME_new_index(unsigned long (*hash_func)(), int (*cmp_func)(),
44 NAME_FUNCS *name_funcs;
46 if (name_funcs_stack == NULL)
49 name_funcs_stack=sk_NAME_FUNCS_new_null();
52 if ((name_funcs_stack == NULL))
59 for (i=sk_NAME_FUNCS_num(name_funcs_stack); i<names_type_num; i++)
62 name_funcs = Malloc(sizeof(NAME_FUNCS));
63 name_funcs->hash_func = lh_strhash;
64 name_funcs->cmp_func = (int (*)())strcmp;
65 name_funcs->free_func = 0; /* NULL is often declared to
66 * ((void *)0), which according
67 * to Compaq C is not really
68 * compatible with a function
69 * pointer. -- Richard Levitte*/
70 sk_NAME_FUNCS_push(name_funcs_stack,name_funcs);
73 name_funcs = sk_NAME_FUNCS_value(name_funcs_stack, ret);
74 if (hash_func != NULL)
75 name_funcs->hash_func = hash_func;
77 name_funcs->cmp_func = cmp_func;
78 if (free_func != NULL)
79 name_funcs->free_func = free_func;
83 static int obj_name_cmp(OBJ_NAME *a, OBJ_NAME *b)
90 if ((name_funcs_stack != NULL)
91 && (sk_NAME_FUNCS_num(name_funcs_stack) > a->type))
93 ret=sk_NAME_FUNCS_value(name_funcs_stack,a->type)
94 ->cmp_func(a->name,b->name);
97 ret=strcmp(a->name,b->name);
102 static unsigned long obj_name_hash(OBJ_NAME *a)
106 if ((name_funcs_stack != NULL) && (sk_NAME_FUNCS_num(name_funcs_stack) > a->type))
108 ret=sk_NAME_FUNCS_value(name_funcs_stack,a->type)
109 ->hash_func(a->name);
113 ret=lh_strhash(a->name);
119 const char *OBJ_NAME_get(const char *name, int type)
124 if (name == NULL) return(NULL);
125 if ((names_lh == NULL) && !OBJ_NAME_init()) return(NULL);
127 alias=type&OBJ_NAME_ALIAS;
128 type&= ~OBJ_NAME_ALIAS;
135 ret=(OBJ_NAME *)lh_retrieve(names_lh,&on);
136 if (ret == NULL) return(NULL);
137 if ((ret->alias) && !alias)
139 if (++num > 10) return(NULL);
149 int OBJ_NAME_add(const char *name, int type, const char *data)
154 if ((names_lh == NULL) && !OBJ_NAME_init()) return(0);
156 alias=type&OBJ_NAME_ALIAS;
157 type&= ~OBJ_NAME_ALIAS;
159 onp=(OBJ_NAME *)Malloc(sizeof(OBJ_NAME));
171 ret=(OBJ_NAME *)lh_insert(names_lh,onp);
175 if ((name_funcs_stack != NULL) && (sk_NAME_FUNCS_num(name_funcs_stack) > ret->type))
177 /* XXX: I'm not sure I understand why the free
178 * function should get three arguments...
181 sk_NAME_FUNCS_value(name_funcs_stack,ret->type)
182 ->free_func(ret->name,ret->type,ret->data);
188 if (lh_error(names_lh))
197 int OBJ_NAME_remove(const char *name, int type)
201 if (names_lh == NULL) return(0);
203 type&= ~OBJ_NAME_ALIAS;
206 ret=(OBJ_NAME *)lh_delete(names_lh,&on);
210 if ((name_funcs_stack != NULL) && (sk_NAME_FUNCS_num(name_funcs_stack) > ret->type))
212 /* XXX: I'm not sure I understand why the free
213 * function should get three arguments...
216 sk_NAME_FUNCS_value(name_funcs_stack,ret->type)
217 ->free_func(ret->name,ret->type,ret->data);
226 static int free_type;
228 static void names_lh_free(OBJ_NAME *onp, int type)
233 if ((free_type < 0) || (free_type == onp->type))
235 OBJ_NAME_remove(onp->name,onp->type);
239 static void name_funcs_free(NAME_FUNCS *ptr)
244 void OBJ_NAME_cleanup(int type)
246 unsigned long down_load;
248 if (names_lh == NULL) return;
251 down_load=names_lh->down_load;
252 names_lh->down_load=0;
254 lh_doall(names_lh,names_lh_free);
258 sk_NAME_FUNCS_pop_free(name_funcs_stack,name_funcs_free);
260 name_funcs_stack = NULL;
263 names_lh->down_load=down_load;