5 #include <openssl/err.h>
6 #include <openssl/lhash.h>
7 #include <openssl/objects.h>
8 #include <openssl/safestack.h>
9 #include <openssl/e_os2.h>
11 /* Later versions of DEC C has started to add lnkage information to certain
12 * functions, which makes it tricky to use them as values to regular function
13 * pointers. One way is to define a macro that takes care of casting them
16 #ifdef OPENSSL_SYS_VMS_DECC
17 # define OPENSSL_strcmp (int (*)(const char *,const char *))strcmp
19 # define OPENSSL_strcmp strcmp
22 /* I use the ex_data stuff to manage the identifiers for the obj_name_types
23 * that applications may define. I only really use the free function field.
25 static LHASH *names_lh=NULL;
26 static int names_type_num=OBJ_NAME_TYPE_NUM;
28 typedef struct name_funcs_st
30 unsigned long (*hash_func)(const char *name);
31 int (*cmp_func)(const char *a,const char *b);
32 void (*free_func)(const char *, int, const char *);
35 DECLARE_STACK_OF(NAME_FUNCS)
36 IMPLEMENT_STACK_OF(NAME_FUNCS)
38 static STACK_OF(NAME_FUNCS) *name_funcs_stack;
40 /* The LHASH callbacks now use the raw "void *" prototypes and do per-variable
41 * casting in the functions. This prevents function pointer casting without the
42 * need for macro-generated wrapper functions. */
44 /* static unsigned long obj_name_hash(OBJ_NAME *a); */
45 static unsigned long obj_name_hash(const void *a_void);
46 /* static int obj_name_cmp(OBJ_NAME *a,OBJ_NAME *b); */
47 static int obj_name_cmp(const void *a_void,const void *b_void);
49 int OBJ_NAME_init(void)
51 if (names_lh != NULL) return(1);
53 names_lh=lh_new(obj_name_hash, obj_name_cmp);
55 return(names_lh != NULL);
58 int OBJ_NAME_new_index(unsigned long (*hash_func)(const char *),
59 int (*cmp_func)(const char *, const char *),
60 void (*free_func)(const char *, int, const char *))
64 NAME_FUNCS *name_funcs;
66 if (name_funcs_stack == NULL)
69 name_funcs_stack=sk_NAME_FUNCS_new_null();
72 if ((name_funcs_stack == NULL))
79 for (i=sk_NAME_FUNCS_num(name_funcs_stack); i<names_type_num; i++)
82 name_funcs = OPENSSL_malloc(sizeof(NAME_FUNCS));
86 OBJerr(OBJ_F_OBJ_NAME_NEW_INDEX,ERR_R_MALLOC_FAILURE);
89 name_funcs->hash_func = lh_strhash;
90 name_funcs->cmp_func = OPENSSL_strcmp;
91 name_funcs->free_func = 0; /* NULL is often declared to
92 * ((void *)0), which according
93 * to Compaq C is not really
94 * compatible with a function
95 * pointer. -- Richard Levitte*/
97 sk_NAME_FUNCS_push(name_funcs_stack,name_funcs);
100 name_funcs = sk_NAME_FUNCS_value(name_funcs_stack, ret);
101 if (hash_func != NULL)
102 name_funcs->hash_func = hash_func;
103 if (cmp_func != NULL)
104 name_funcs->cmp_func = cmp_func;
105 if (free_func != NULL)
106 name_funcs->free_func = free_func;
110 /* static int obj_name_cmp(OBJ_NAME *a, OBJ_NAME *b) */
111 static int obj_name_cmp(const void *a_void, const void *b_void)
114 const OBJ_NAME *a = (const OBJ_NAME *)a_void;
115 const OBJ_NAME *b = (const OBJ_NAME *)b_void;
120 if ((name_funcs_stack != NULL)
121 && (sk_NAME_FUNCS_num(name_funcs_stack) > a->type))
123 ret=sk_NAME_FUNCS_value(name_funcs_stack,
124 a->type)->cmp_func(a->name,b->name);
127 ret=strcmp(a->name,b->name);
132 /* static unsigned long obj_name_hash(OBJ_NAME *a) */
133 static unsigned long obj_name_hash(const void *a_void)
136 const OBJ_NAME *a = (const OBJ_NAME *)a_void;
138 if ((name_funcs_stack != NULL) && (sk_NAME_FUNCS_num(name_funcs_stack) > a->type))
140 ret=sk_NAME_FUNCS_value(name_funcs_stack,
141 a->type)->hash_func(a->name);
145 ret=lh_strhash(a->name);
151 const char *OBJ_NAME_get(const char *name, int type)
156 if (name == NULL) return(NULL);
157 if ((names_lh == NULL) && !OBJ_NAME_init()) return(NULL);
159 alias=type&OBJ_NAME_ALIAS;
160 type&= ~OBJ_NAME_ALIAS;
167 ret=(OBJ_NAME *)lh_retrieve(names_lh,&on);
168 if (ret == NULL) return(NULL);
169 if ((ret->alias) && !alias)
171 if (++num > 10) return(NULL);
181 int OBJ_NAME_add(const char *name, int type, const char *data)
186 if ((names_lh == NULL) && !OBJ_NAME_init()) return(0);
188 alias=type&OBJ_NAME_ALIAS;
189 type&= ~OBJ_NAME_ALIAS;
191 onp=(OBJ_NAME *)OPENSSL_malloc(sizeof(OBJ_NAME));
203 ret=(OBJ_NAME *)lh_insert(names_lh,onp);
207 if ((name_funcs_stack != NULL) && (sk_NAME_FUNCS_num(name_funcs_stack) > ret->type))
209 /* XXX: I'm not sure I understand why the free
210 * function should get three arguments...
213 sk_NAME_FUNCS_value(name_funcs_stack,
214 ret->type)->free_func(ret->name,ret->type,ret->data);
220 if (lh_error(names_lh))
229 int OBJ_NAME_remove(const char *name, int type)
233 if (names_lh == NULL) return(0);
235 type&= ~OBJ_NAME_ALIAS;
238 ret=(OBJ_NAME *)lh_delete(names_lh,&on);
242 if ((name_funcs_stack != NULL) && (sk_NAME_FUNCS_num(name_funcs_stack) > ret->type))
244 /* XXX: I'm not sure I understand why the free
245 * function should get three arguments...
248 sk_NAME_FUNCS_value(name_funcs_stack,
249 ret->type)->free_func(ret->name,ret->type,ret->data);
261 void (*fn)(const OBJ_NAME *,void *arg);
265 static void do_all_fn(const OBJ_NAME *name,struct doall *d)
267 if(name->type == d->type)
271 static IMPLEMENT_LHASH_DOALL_ARG_FN(do_all_fn, const OBJ_NAME *, struct doall *)
273 void OBJ_NAME_do_all(int type,void (*fn)(const OBJ_NAME *,void *arg),void *arg)
281 lh_doall_arg(names_lh,LHASH_DOALL_ARG_FN(do_all_fn),&d);
288 const OBJ_NAME **names;
291 static void do_all_sorted_fn(const OBJ_NAME *name,void *d_)
293 struct doall_sorted *d=d_;
295 if(name->type != d->type)
298 d->names[d->n++]=name;
301 static int do_all_sorted_cmp(const void *n1_,const void *n2_)
303 const OBJ_NAME * const *n1=n1_;
304 const OBJ_NAME * const *n2=n2_;
306 return strcmp((*n1)->name,(*n2)->name);
309 void OBJ_NAME_do_all_sorted(int type,void (*fn)(const OBJ_NAME *,void *arg),
312 struct doall_sorted d;
316 d.names=OPENSSL_malloc(lh_num_items(names_lh)*sizeof *d.names);
318 OBJ_NAME_do_all(type,do_all_sorted_fn,&d);
320 qsort((void *)d.names,d.n,sizeof *d.names,do_all_sorted_cmp);
322 for(n=0 ; n < d.n ; ++n)
325 OPENSSL_free((void *)d.names);
328 static int free_type;
330 static void names_lh_free(OBJ_NAME *onp)
335 if ((free_type < 0) || (free_type == onp->type))
337 OBJ_NAME_remove(onp->name,onp->type);
341 static IMPLEMENT_LHASH_DOALL_FN(names_lh_free, OBJ_NAME *)
343 static void name_funcs_free(NAME_FUNCS *ptr)
348 void OBJ_NAME_cleanup(int type)
350 unsigned long down_load;
352 if (names_lh == NULL) return;
355 down_load=names_lh->down_load;
356 names_lh->down_load=0;
358 lh_doall(names_lh,LHASH_DOALL_FN(names_lh_free));
362 sk_NAME_FUNCS_pop_free(name_funcs_stack,name_funcs_free);
364 name_funcs_stack = NULL;
367 names_lh->down_load=down_load;