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)
39 static STACK_OF(NAME_FUNCS) *name_funcs_stack;
42 * The LHASH callbacks now use the raw "void *" prototypes and do
43 * per-variable casting in the functions. This prevents function pointer
44 * casting without the need for macro-generated wrapper functions.
47 /* static unsigned long obj_name_hash(OBJ_NAME *a); */
48 static unsigned long obj_name_hash(const void *a_void);
49 /* static int obj_name_cmp(OBJ_NAME *a,OBJ_NAME *b); */
50 static int obj_name_cmp(const void *a_void, const void *b_void);
52 static IMPLEMENT_LHASH_HASH_FN(obj_name, OBJ_NAME)
53 static IMPLEMENT_LHASH_COMP_FN(obj_name, OBJ_NAME)
55 int OBJ_NAME_init(void)
60 names_lh = lh_OBJ_NAME_new();
62 return (names_lh != NULL);
65 int OBJ_NAME_new_index(unsigned long (*hash_func) (const char *),
66 int (*cmp_func) (const char *, const char *),
67 void (*free_func) (const char *, int, const char *))
71 NAME_FUNCS *name_funcs;
73 if (name_funcs_stack == NULL) {
75 name_funcs_stack = sk_NAME_FUNCS_new_null();
78 if (name_funcs_stack == NULL) {
84 for (i = sk_NAME_FUNCS_num(name_funcs_stack); i < names_type_num; i++) {
86 name_funcs = OPENSSL_malloc(sizeof(NAME_FUNCS));
89 OBJerr(OBJ_F_OBJ_NAME_NEW_INDEX, ERR_R_MALLOC_FAILURE);
92 name_funcs->hash_func = lh_strhash;
93 name_funcs->cmp_func = OPENSSL_strcmp;
94 name_funcs->free_func = 0; /* NULL is often declared to * ((void
95 * *)0), which according * to Compaq C is
96 * not really * compatible with a function
97 * * pointer. -- Richard Levitte */
99 sk_NAME_FUNCS_push(name_funcs_stack, name_funcs);
102 name_funcs = sk_NAME_FUNCS_value(name_funcs_stack, ret);
103 if (hash_func != NULL)
104 name_funcs->hash_func = hash_func;
105 if (cmp_func != NULL)
106 name_funcs->cmp_func = cmp_func;
107 if (free_func != NULL)
108 name_funcs->free_func = free_func;
112 /* static int obj_name_cmp(OBJ_NAME *a, OBJ_NAME *b) */
113 static int obj_name_cmp(const void *a_void, const void *b_void)
116 const OBJ_NAME *a = (const OBJ_NAME *)a_void;
117 const OBJ_NAME *b = (const OBJ_NAME *)b_void;
119 ret = a->type - b->type;
121 if ((name_funcs_stack != NULL)
122 && (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);
126 ret = strcmp(a->name, b->name);
131 /* static unsigned long obj_name_hash(OBJ_NAME *a) */
132 static unsigned long obj_name_hash(const void *a_void)
135 const OBJ_NAME *a = (const OBJ_NAME *)a_void;
137 if ((name_funcs_stack != NULL)
138 && (sk_NAME_FUNCS_num(name_funcs_stack) > a->type)) {
140 sk_NAME_FUNCS_value(name_funcs_stack,
141 a->type)->hash_func(a->name);
143 ret = lh_strhash(a->name);
149 const char *OBJ_NAME_get(const char *name, int type)
156 if ((names_lh == NULL) && !OBJ_NAME_init())
159 alias = type & OBJ_NAME_ALIAS;
160 type &= ~OBJ_NAME_ALIAS;
166 ret = lh_OBJ_NAME_retrieve(names_lh, &on);
169 if ((ret->alias) && !alias) {
179 int OBJ_NAME_add(const char *name, int type, const char *data)
184 if ((names_lh == NULL) && !OBJ_NAME_init())
187 alias = type & OBJ_NAME_ALIAS;
188 type &= ~OBJ_NAME_ALIAS;
190 onp = (OBJ_NAME *)OPENSSL_malloc(sizeof(OBJ_NAME));
201 ret = lh_OBJ_NAME_insert(names_lh, onp);
204 if ((name_funcs_stack != NULL)
205 && (sk_NAME_FUNCS_num(name_funcs_stack) > ret->type)) {
207 * XXX: I'm not sure I understand why the free function should
208 * get three arguments... -- Richard Levitte
210 sk_NAME_FUNCS_value(name_funcs_stack,
211 ret->type)->free_func(ret->name, ret->type,
216 if (lh_OBJ_NAME_error(names_lh)) {
224 int OBJ_NAME_remove(const char *name, int type)
228 if (names_lh == NULL)
231 type &= ~OBJ_NAME_ALIAS;
234 ret = lh_OBJ_NAME_delete(names_lh, &on);
237 if ((name_funcs_stack != NULL)
238 && (sk_NAME_FUNCS_num(name_funcs_stack) > ret->type)) {
240 * XXX: I'm not sure I understand why the free function should
241 * get three arguments... -- Richard Levitte
243 sk_NAME_FUNCS_value(name_funcs_stack,
244 ret->type)->free_func(ret->name, ret->type,
255 void (*fn) (const OBJ_NAME *, void *arg);
259 static void do_all_fn_doall_arg(const OBJ_NAME *name, struct doall *d)
261 if (name->type == d->type)
265 static IMPLEMENT_LHASH_DOALL_ARG_FN(do_all_fn, const OBJ_NAME, struct doall)
267 void OBJ_NAME_do_all(int type, void (*fn) (const OBJ_NAME *, void *arg),
276 lh_OBJ_NAME_doall_arg(names_lh, LHASH_DOALL_ARG_FN(do_all_fn),
280 struct doall_sorted {
283 const OBJ_NAME **names;
286 static void do_all_sorted_fn(const OBJ_NAME *name, void *d_)
288 struct doall_sorted *d = d_;
290 if (name->type != d->type)
293 d->names[d->n++] = name;
296 static int do_all_sorted_cmp(const void *n1_, const void *n2_)
298 const OBJ_NAME *const *n1 = n1_;
299 const OBJ_NAME *const *n2 = n2_;
301 return strcmp((*n1)->name, (*n2)->name);
304 void OBJ_NAME_do_all_sorted(int type,
305 void (*fn) (const OBJ_NAME *, void *arg),
308 struct doall_sorted d;
313 OPENSSL_malloc(lh_OBJ_NAME_num_items(names_lh) * sizeof *d.names);
315 OBJ_NAME_do_all(type, do_all_sorted_fn, &d);
317 qsort((void *)d.names, d.n, sizeof *d.names, do_all_sorted_cmp);
319 for (n = 0; n < d.n; ++n)
322 OPENSSL_free((void *)d.names);
325 static int free_type;
327 static void names_lh_free_doall(OBJ_NAME *onp)
332 if (free_type < 0 || free_type == onp->type)
333 OBJ_NAME_remove(onp->name, onp->type);
336 static IMPLEMENT_LHASH_DOALL_FN(names_lh_free, OBJ_NAME)
338 static void name_funcs_free(NAME_FUNCS *ptr)
343 void OBJ_NAME_cleanup(int type)
345 unsigned long down_load;
347 if (names_lh == NULL)
351 down_load = lh_OBJ_NAME_down_load(names_lh);
352 lh_OBJ_NAME_down_load(names_lh) = 0;
354 lh_OBJ_NAME_doall(names_lh, LHASH_DOALL_FN(names_lh_free));
356 lh_OBJ_NAME_free(names_lh);
357 sk_NAME_FUNCS_pop_free(name_funcs_stack, name_funcs_free);
359 name_funcs_stack = NULL;
361 lh_OBJ_NAME_down_load(names_lh) = down_load;