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>
12 * Later versions of DEC C has started to add lnkage information to certain
13 * functions, which makes it tricky to use them as values to regular function
14 * pointers. One way is to define a macro that takes care of casting them
17 #ifdef OPENSSL_SYS_VMS_DECC
18 # define OPENSSL_strcmp (int (*)(const char *,const char *))strcmp
20 # define OPENSSL_strcmp strcmp
24 * I use the ex_data stuff to manage the identifiers for the obj_name_types
25 * that applications may define. I only really use the free function field.
27 DECLARE_LHASH_OF(OBJ_NAME);
28 static LHASH_OF(OBJ_NAME) *names_lh = NULL;
29 static int names_type_num = OBJ_NAME_TYPE_NUM;
31 typedef struct name_funcs_st {
32 unsigned long (*hash_func) (const char *name);
33 int (*cmp_func) (const char *a, const char *b);
34 void (*free_func) (const char *, int, const char *);
37 DECLARE_STACK_OF(NAME_FUNCS)
38 IMPLEMENT_STACK_OF(NAME_FUNCS)
40 static STACK_OF(NAME_FUNCS) *name_funcs_stack;
43 * The LHASH callbacks now use the raw "void *" prototypes and do
44 * per-variable casting in the functions. This prevents function pointer
45 * casting without the need for macro-generated wrapper functions.
48 /* static unsigned long obj_name_hash(OBJ_NAME *a); */
49 static unsigned long obj_name_hash(const void *a_void);
50 /* static int obj_name_cmp(OBJ_NAME *a,OBJ_NAME *b); */
51 static int obj_name_cmp(const void *a_void, const void *b_void);
53 static IMPLEMENT_LHASH_HASH_FN(obj_name, OBJ_NAME)
54 static IMPLEMENT_LHASH_COMP_FN(obj_name, OBJ_NAME)
56 int OBJ_NAME_init(void)
61 names_lh = lh_OBJ_NAME_new();
63 return (names_lh != NULL);
66 int OBJ_NAME_new_index(unsigned long (*hash_func) (const char *),
67 int (*cmp_func) (const char *, const char *),
68 void (*free_func) (const char *, int, const char *))
72 NAME_FUNCS *name_funcs;
74 if (name_funcs_stack == NULL) {
76 name_funcs_stack = sk_NAME_FUNCS_new_null();
79 if (name_funcs_stack == NULL) {
85 for (i = sk_NAME_FUNCS_num(name_funcs_stack); i < names_type_num; i++) {
87 name_funcs = OPENSSL_malloc(sizeof(NAME_FUNCS));
90 OBJerr(OBJ_F_OBJ_NAME_NEW_INDEX, ERR_R_MALLOC_FAILURE);
93 name_funcs->hash_func = lh_strhash;
94 name_funcs->cmp_func = OPENSSL_strcmp;
95 name_funcs->free_func = 0; /* NULL is often declared to * ((void
96 * *)0), which according * to Compaq C is
97 * not really * compatible with a function
98 * * pointer. -- Richard Levitte */
100 sk_NAME_FUNCS_push(name_funcs_stack, name_funcs);
103 name_funcs = sk_NAME_FUNCS_value(name_funcs_stack, ret);
104 if (hash_func != NULL)
105 name_funcs->hash_func = hash_func;
106 if (cmp_func != NULL)
107 name_funcs->cmp_func = cmp_func;
108 if (free_func != NULL)
109 name_funcs->free_func = free_func;
113 /* static int obj_name_cmp(OBJ_NAME *a, OBJ_NAME *b) */
114 static int obj_name_cmp(const void *a_void, const void *b_void)
117 const OBJ_NAME *a = (const OBJ_NAME *)a_void;
118 const OBJ_NAME *b = (const OBJ_NAME *)b_void;
120 ret = a->type - b->type;
122 if ((name_funcs_stack != NULL)
123 && (sk_NAME_FUNCS_num(name_funcs_stack) > a->type)) {
124 ret = sk_NAME_FUNCS_value(name_funcs_stack,
125 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)
139 && (sk_NAME_FUNCS_num(name_funcs_stack) > a->type)) {
141 sk_NAME_FUNCS_value(name_funcs_stack,
142 a->type)->hash_func(a->name);
144 ret = lh_strhash(a->name);
150 const char *OBJ_NAME_get(const char *name, int type)
157 if ((names_lh == NULL) && !OBJ_NAME_init())
160 alias = type & OBJ_NAME_ALIAS;
161 type &= ~OBJ_NAME_ALIAS;
167 ret = lh_OBJ_NAME_retrieve(names_lh, &on);
170 if ((ret->alias) && !alias) {
180 int OBJ_NAME_add(const char *name, int type, const char *data)
185 if ((names_lh == NULL) && !OBJ_NAME_init())
188 alias = type & OBJ_NAME_ALIAS;
189 type &= ~OBJ_NAME_ALIAS;
191 onp = (OBJ_NAME *)OPENSSL_malloc(sizeof(OBJ_NAME));
202 ret = lh_OBJ_NAME_insert(names_lh, onp);
205 if ((name_funcs_stack != NULL)
206 && (sk_NAME_FUNCS_num(name_funcs_stack) > ret->type)) {
208 * XXX: I'm not sure I understand why the free function should
209 * get three arguments... -- Richard Levitte
211 sk_NAME_FUNCS_value(name_funcs_stack,
212 ret->type)->free_func(ret->name, ret->type,
217 if (lh_OBJ_NAME_error(names_lh)) {
225 int OBJ_NAME_remove(const char *name, int type)
229 if (names_lh == NULL)
232 type &= ~OBJ_NAME_ALIAS;
235 ret = lh_OBJ_NAME_delete(names_lh, &on);
238 if ((name_funcs_stack != NULL)
239 && (sk_NAME_FUNCS_num(name_funcs_stack) > ret->type)) {
241 * XXX: I'm not sure I understand why the free function should
242 * get three arguments... -- Richard Levitte
244 sk_NAME_FUNCS_value(name_funcs_stack,
245 ret->type)->free_func(ret->name, ret->type,
256 void (*fn) (const OBJ_NAME *, void *arg);
260 static void do_all_fn_doall_arg(const OBJ_NAME *name, struct doall *d)
262 if (name->type == d->type)
266 static IMPLEMENT_LHASH_DOALL_ARG_FN(do_all_fn, const OBJ_NAME, struct doall)
268 void OBJ_NAME_do_all(int type, void (*fn) (const OBJ_NAME *, void *arg),
277 lh_OBJ_NAME_doall_arg(names_lh, LHASH_DOALL_ARG_FN(do_all_fn),
281 struct doall_sorted {
284 const OBJ_NAME **names;
287 static void do_all_sorted_fn(const OBJ_NAME *name, void *d_)
289 struct doall_sorted *d = d_;
291 if (name->type != d->type)
294 d->names[d->n++] = name;
297 static int do_all_sorted_cmp(const void *n1_, const void *n2_)
299 const OBJ_NAME *const *n1 = n1_;
300 const OBJ_NAME *const *n2 = n2_;
302 return strcmp((*n1)->name, (*n2)->name);
305 void OBJ_NAME_do_all_sorted(int type,
306 void (*fn) (const OBJ_NAME *, void *arg),
309 struct doall_sorted d;
314 OPENSSL_malloc(lh_OBJ_NAME_num_items(names_lh) * sizeof *d.names);
315 /* Really should return an error if !d.names...but its a void function! */
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);
329 static int free_type;
331 static void names_lh_free_doall(OBJ_NAME *onp)
336 if (free_type < 0 || free_type == onp->type)
337 OBJ_NAME_remove(onp->name, onp->type);
340 static IMPLEMENT_LHASH_DOALL_FN(names_lh_free, OBJ_NAME)
342 static void name_funcs_free(NAME_FUNCS *ptr)
347 void OBJ_NAME_cleanup(int type)
349 unsigned long down_load;
351 if (names_lh == NULL)
355 down_load = lh_OBJ_NAME_down_load(names_lh);
356 lh_OBJ_NAME_down_load(names_lh) = 0;
358 lh_OBJ_NAME_doall(names_lh, LHASH_DOALL_FN(names_lh_free));
360 lh_OBJ_NAME_free(names_lh);
361 sk_NAME_FUNCS_pop_free(name_funcs_stack, name_funcs_free);
363 name_funcs_stack = NULL;
365 lh_OBJ_NAME_down_load(names_lh) = down_load;