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>
13 * Later versions of DEC C has started to add lnkage information to certain
14 * functions, which makes it tricky to use them as values to regular function
15 * pointers. One way is to define a macro that takes care of casting them
18 #ifdef OPENSSL_SYS_VMS_DECC
19 # define OPENSSL_strcmp (int (*)(const char *,const char *))strcmp
21 # define OPENSSL_strcmp strcmp
25 * I use the ex_data stuff to manage the identifiers for the obj_name_types
26 * that applications may define. I only really use the free function field.
28 static LHASH_OF(OBJ_NAME) *names_lh = NULL;
29 static int names_type_num = OBJ_NAME_TYPE_NUM;
31 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 static STACK_OF(NAME_FUNCS) *name_funcs_stack;
40 * The LHASH callbacks now use the raw "void *" prototypes and do
41 * per-variable casting in the functions. This prevents function pointer
42 * casting without the need for macro-generated wrapper functions.
45 static unsigned long obj_name_hash(const OBJ_NAME *a);
46 static int obj_name_cmp(const OBJ_NAME *a, const OBJ_NAME *b);
48 int OBJ_NAME_init(void)
52 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
53 names_lh = lh_OBJ_NAME_new(obj_name_hash, obj_name_cmp);
54 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
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) {
67 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
68 name_funcs_stack = sk_NAME_FUNCS_new_null();
69 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
71 if (name_funcs_stack == NULL) {
77 for (i = sk_NAME_FUNCS_num(name_funcs_stack); i < names_type_num; i++) {
78 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
79 name_funcs = OPENSSL_zalloc(sizeof(*name_funcs));
80 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
81 if (name_funcs == NULL) {
82 OBJerr(OBJ_F_OBJ_NAME_NEW_INDEX, ERR_R_MALLOC_FAILURE);
85 name_funcs->hash_func = lh_strhash;
86 name_funcs->cmp_func = OPENSSL_strcmp;
87 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
88 sk_NAME_FUNCS_push(name_funcs_stack, name_funcs);
89 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
91 name_funcs = sk_NAME_FUNCS_value(name_funcs_stack, ret);
92 if (hash_func != NULL)
93 name_funcs->hash_func = hash_func;
95 name_funcs->cmp_func = cmp_func;
96 if (free_func != NULL)
97 name_funcs->free_func = free_func;
101 static int obj_name_cmp(const OBJ_NAME *a, const OBJ_NAME *b)
105 ret = a->type - b->type;
107 if ((name_funcs_stack != NULL)
108 && (sk_NAME_FUNCS_num(name_funcs_stack) > a->type)) {
109 ret = sk_NAME_FUNCS_value(name_funcs_stack,
110 a->type)->cmp_func(a->name, b->name);
112 ret = strcmp(a->name, b->name);
117 static unsigned long obj_name_hash(const OBJ_NAME *a)
121 if ((name_funcs_stack != NULL)
122 && (sk_NAME_FUNCS_num(name_funcs_stack) > a->type)) {
124 sk_NAME_FUNCS_value(name_funcs_stack,
125 a->type)->hash_func(a->name);
127 ret = lh_strhash(a->name);
133 const char *OBJ_NAME_get(const char *name, int type)
140 if ((names_lh == NULL) && !OBJ_NAME_init())
143 alias = type & OBJ_NAME_ALIAS;
144 type &= ~OBJ_NAME_ALIAS;
150 ret = lh_OBJ_NAME_retrieve(names_lh, &on);
153 if ((ret->alias) && !alias) {
163 int OBJ_NAME_add(const char *name, int type, const char *data)
168 if ((names_lh == NULL) && !OBJ_NAME_init())
171 alias = type & OBJ_NAME_ALIAS;
172 type &= ~OBJ_NAME_ALIAS;
174 onp = OPENSSL_malloc(sizeof(*onp));
185 ret = lh_OBJ_NAME_insert(names_lh, onp);
188 if ((name_funcs_stack != NULL)
189 && (sk_NAME_FUNCS_num(name_funcs_stack) > ret->type)) {
191 * XXX: I'm not sure I understand why the free function should
192 * get three arguments... -- Richard Levitte
194 sk_NAME_FUNCS_value(name_funcs_stack,
195 ret->type)->free_func(ret->name, ret->type,
200 if (lh_OBJ_NAME_error(names_lh)) {
208 int OBJ_NAME_remove(const char *name, int type)
212 if (names_lh == NULL)
215 type &= ~OBJ_NAME_ALIAS;
218 ret = lh_OBJ_NAME_delete(names_lh, &on);
221 if ((name_funcs_stack != NULL)
222 && (sk_NAME_FUNCS_num(name_funcs_stack) > ret->type)) {
224 * XXX: I'm not sure I understand why the free function should
225 * get three arguments... -- Richard Levitte
227 sk_NAME_FUNCS_value(name_funcs_stack,
228 ret->type)->free_func(ret->name, ret->type,
239 void (*fn) (const OBJ_NAME *, void *arg);
243 static void do_all_fn_doall_arg(const OBJ_NAME *name, struct doall *d)
245 if (name->type == d->type)
249 static IMPLEMENT_LHASH_DOALL_ARG_FN(do_all_fn, const OBJ_NAME, struct doall)
251 void OBJ_NAME_do_all(int type, void (*fn) (const OBJ_NAME *, void *arg),
260 lh_OBJ_NAME_doall_arg(names_lh, LHASH_DOALL_ARG_FN(do_all_fn),
264 struct doall_sorted {
267 const OBJ_NAME **names;
270 static void do_all_sorted_fn(const OBJ_NAME *name, void *d_)
272 struct doall_sorted *d = d_;
274 if (name->type != d->type)
277 d->names[d->n++] = name;
280 static int do_all_sorted_cmp(const void *n1_, const void *n2_)
282 const OBJ_NAME *const *n1 = n1_;
283 const OBJ_NAME *const *n2 = n2_;
285 return strcmp((*n1)->name, (*n2)->name);
288 void OBJ_NAME_do_all_sorted(int type,
289 void (*fn) (const OBJ_NAME *, void *arg),
292 struct doall_sorted d;
297 OPENSSL_malloc(sizeof(*d.names) * lh_OBJ_NAME_num_items(names_lh));
298 /* Really should return an error if !d.names...but its a void function! */
299 if (d.names != NULL) {
301 OBJ_NAME_do_all(type, do_all_sorted_fn, &d);
303 qsort((void *)d.names, d.n, sizeof(*d.names), do_all_sorted_cmp);
305 for (n = 0; n < d.n; ++n)
308 OPENSSL_free((void *)d.names);
312 static int free_type;
314 static void names_lh_free_doall(OBJ_NAME *onp)
319 if (free_type < 0 || free_type == onp->type)
320 OBJ_NAME_remove(onp->name, onp->type);
323 static void name_funcs_free(NAME_FUNCS *ptr)
328 void OBJ_NAME_cleanup(int type)
330 unsigned long down_load;
332 if (names_lh == NULL)
336 down_load = lh_OBJ_NAME_get_down_load(names_lh);
337 lh_OBJ_NAME_set_down_load(names_lh, 0);
339 lh_OBJ_NAME_doall(names_lh, names_lh_free_doall);
341 lh_OBJ_NAME_free(names_lh);
342 sk_NAME_FUNCS_pop_free(name_funcs_stack, name_funcs_free);
344 name_funcs_stack = NULL;
346 lh_OBJ_NAME_set_down_load(names_lh, down_load);