diff options
Diffstat (limited to 'crypto/ex_data.c')
| -rw-r--r-- | crypto/ex_data.c | 846 |
1 files changed, 427 insertions, 419 deletions
diff --git a/crypto/ex_data.c b/crypto/ex_data.c index e2bc8298d0..5a3546a2d2 100644 --- a/crypto/ex_data.c +++ b/crypto/ex_data.c @@ -34,21 +34,21 @@ * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. - * + * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). - * + * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. - * + * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: @@ -63,10 +63,10 @@ * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). - * 4. If you include any Windows specific code (or a derivative thereof) from + * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" - * + * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE @@ -78,7 +78,7 @@ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. - * + * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence @@ -92,7 +92,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in @@ -142,103 +142,108 @@ #include <openssl/lhash.h> /* What an "implementation of ex_data functionality" looks like */ -struct st_CRYPTO_EX_DATA_IMPL - { - /*********************/ - /* GLOBAL OPERATIONS */ - /* Return a new class index */ - int (*cb_new_class)(void); - /* Cleanup all state used by the implementation */ - void (*cb_cleanup)(void); - /************************/ - /* PER-CLASS OPERATIONS */ - /* Get a new method index within a class */ - int (*cb_get_new_index)(int class_index, long argl, void *argp, - CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func, - CRYPTO_EX_free *free_func); - /* Initialise a new CRYPTO_EX_DATA of a given class */ - int (*cb_new_ex_data)(int class_index, void *obj, - CRYPTO_EX_DATA *ad); - /* Duplicate a CRYPTO_EX_DATA of a given class onto a copy */ - int (*cb_dup_ex_data)(int class_index, CRYPTO_EX_DATA *to, - CRYPTO_EX_DATA *from); - /* Cleanup a CRYPTO_EX_DATA of a given class */ - void (*cb_free_ex_data)(int class_index, void *obj, - CRYPTO_EX_DATA *ad); - }; +struct st_CRYPTO_EX_DATA_IMPL { + /*********************/ + /* GLOBAL OPERATIONS */ + /* Return a new class index */ + int (*cb_new_class) (void); + /* Cleanup all state used by the implementation */ + void (*cb_cleanup) (void); + /************************/ + /* PER-CLASS OPERATIONS */ + /* Get a new method index within a class */ + int (*cb_get_new_index) (int class_index, long argl, void *argp, + CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func, + CRYPTO_EX_free *free_func); + /* Initialise a new CRYPTO_EX_DATA of a given class */ + int (*cb_new_ex_data) (int class_index, void *obj, CRYPTO_EX_DATA *ad); + /* Duplicate a CRYPTO_EX_DATA of a given class onto a copy */ + int (*cb_dup_ex_data) (int class_index, CRYPTO_EX_DATA *to, + CRYPTO_EX_DATA *from); + /* Cleanup a CRYPTO_EX_DATA of a given class */ + void (*cb_free_ex_data) (int class_index, void *obj, CRYPTO_EX_DATA *ad); +}; /* The implementation we use at run-time */ static const CRYPTO_EX_DATA_IMPL *impl = NULL; -/* To call "impl" functions, use this macro rather than referring to 'impl' directly, eg. - * EX_IMPL(get_new_index)(...); */ +/* + * To call "impl" functions, use this macro rather than referring to 'impl' + * directly, eg. EX_IMPL(get_new_index)(...); + */ #define EX_IMPL(a) impl->cb_##a /* Predeclare the "default" ex_data implementation */ static int int_new_class(void); static void int_cleanup(void); static int int_get_new_index(int class_index, long argl, void *argp, - CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func, - CRYPTO_EX_free *free_func); -static int int_new_ex_data(int class_index, void *obj, - CRYPTO_EX_DATA *ad); + CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func, + CRYPTO_EX_free *free_func); +static int int_new_ex_data(int class_index, void *obj, CRYPTO_EX_DATA *ad); static int int_dup_ex_data(int class_index, CRYPTO_EX_DATA *to, - CRYPTO_EX_DATA *from); -static void int_free_ex_data(int class_index, void *obj, - CRYPTO_EX_DATA *ad); -static CRYPTO_EX_DATA_IMPL impl_default = - { - int_new_class, - int_cleanup, - int_get_new_index, - int_new_ex_data, - int_dup_ex_data, - int_free_ex_data - }; - -/* Internal function that checks whether "impl" is set and if not, sets it to - * the default. */ + CRYPTO_EX_DATA *from); +static void int_free_ex_data(int class_index, void *obj, CRYPTO_EX_DATA *ad); +static CRYPTO_EX_DATA_IMPL impl_default = { + int_new_class, + int_cleanup, + int_get_new_index, + int_new_ex_data, + int_dup_ex_data, + int_free_ex_data +}; + +/* + * Internal function that checks whether "impl" is set and if not, sets it to + * the default. + */ static void impl_check(void) - { - CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA); - if(!impl) - impl = &impl_default; - CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA); - } -/* A macro wrapper for impl_check that first uses a non-locked test before - * invoking the function (which checks again inside a lock). */ +{ + CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA); + if (!impl) + impl = &impl_default; + CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA); +} + +/* + * A macro wrapper for impl_check that first uses a non-locked test before + * invoking the function (which checks again inside a lock). + */ #define IMPL_CHECK if(!impl) impl_check(); /* API functions to get/set the "ex_data" implementation */ const CRYPTO_EX_DATA_IMPL *CRYPTO_get_ex_data_implementation(void) - { - IMPL_CHECK - return impl; - } +{ + IMPL_CHECK return impl; +} + int CRYPTO_set_ex_data_implementation(const CRYPTO_EX_DATA_IMPL *i) - { - int toret = 0; - CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA); - if(!impl) - { - impl = i; - toret = 1; - } - CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA); - return toret; - } +{ + int toret = 0; + CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA); + if (!impl) { + impl = i; + toret = 1; + } + CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA); + return toret; +} /****************************************************************************/ -/* Interal (default) implementation of "ex_data" support. API functions are - * further down. */ +/* + * Interal (default) implementation of "ex_data" support. API functions are + * further down. + */ -/* The type that represents what each "class" used to implement locally. A STACK - * of CRYPTO_EX_DATA_FUNCS plus a index-counter. The 'class_index' is the global - * value representing the class that is used to distinguish these items. */ +/* + * The type that represents what each "class" used to implement locally. A + * STACK of CRYPTO_EX_DATA_FUNCS plus a index-counter. The 'class_index' is + * the global value representing the class that is used to distinguish these + * items. + */ typedef struct st_ex_class_item { - int class_index; - STACK_OF(CRYPTO_EX_DATA_FUNCS) *meth; - int meth_num; + int class_index; + STACK_OF(CRYPTO_EX_DATA_FUNCS) *meth; + int meth_num; } EX_CLASS_ITEM; /* When assigning new class indexes, this is our counter */ @@ -250,387 +255,390 @@ static LHASH_OF(EX_CLASS_ITEM) *ex_data = NULL; /* The callbacks required in the "ex_data" hash table */ static unsigned long ex_class_item_hash(const EX_CLASS_ITEM *a) - { - return a->class_index; - } +{ + return a->class_index; +} + static IMPLEMENT_LHASH_HASH_FN(ex_class_item, EX_CLASS_ITEM) static int ex_class_item_cmp(const EX_CLASS_ITEM *a, const EX_CLASS_ITEM *b) - { - return a->class_index - b->class_index; - } -static IMPLEMENT_LHASH_COMP_FN(ex_class_item, EX_CLASS_ITEM) +{ + return a->class_index - b->class_index; +} -/* Internal functions used by the "impl_default" implementation to access the - * state */ +static IMPLEMENT_LHASH_COMP_FN(ex_class_item, EX_CLASS_ITEM) +/* + * Internal functions used by the "impl_default" implementation to access the + * state + */ static int ex_data_check(void) - { - int toret = 1; - CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA); - if(!ex_data - && (ex_data = lh_EX_CLASS_ITEM_new()) == NULL) - toret = 0; - CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA); - return toret; - } -/* This macros helps reduce the locking from repeated checks because the - * ex_data_check() function checks ex_data again inside a lock. */ +{ + int toret = 1; + CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA); + if (!ex_data && (ex_data = lh_EX_CLASS_ITEM_new()) == NULL) + toret = 0; + CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA); + return toret; +} + +/* + * This macros helps reduce the locking from repeated checks because the + * ex_data_check() function checks ex_data again inside a lock. + */ #define EX_DATA_CHECK(iffail) if(!ex_data && !ex_data_check()) {iffail} /* This "inner" callback is used by the callback function that follows it */ static void def_cleanup_util_cb(CRYPTO_EX_DATA_FUNCS *funcs) - { - OPENSSL_free(funcs); - } +{ + OPENSSL_free(funcs); +} -/* This callback is used in lh_doall to destroy all EX_CLASS_ITEM values from - * "ex_data" prior to the ex_data hash table being itself destroyed. Doesn't do - * any locking. */ +/* + * This callback is used in lh_doall to destroy all EX_CLASS_ITEM values from + * "ex_data" prior to the ex_data hash table being itself destroyed. Doesn't + * do any locking. + */ static void def_cleanup_cb(void *a_void) - { - EX_CLASS_ITEM *item = (EX_CLASS_ITEM *)a_void; - sk_CRYPTO_EX_DATA_FUNCS_pop_free(item->meth, def_cleanup_util_cb); - OPENSSL_free(item); - } - -/* Return the EX_CLASS_ITEM from the "ex_data" hash table that corresponds to a - * given class. Handles locking. */ +{ + EX_CLASS_ITEM *item = (EX_CLASS_ITEM *)a_void; + sk_CRYPTO_EX_DATA_FUNCS_pop_free(item->meth, def_cleanup_util_cb); + OPENSSL_free(item); +} + +/* + * Return the EX_CLASS_ITEM from the "ex_data" hash table that corresponds to + * a given class. Handles locking. + */ static EX_CLASS_ITEM *def_get_class(int class_index) - { - EX_CLASS_ITEM d, *p, *gen; - EX_DATA_CHECK(return NULL;) - d.class_index = class_index; - CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA); - p = lh_EX_CLASS_ITEM_retrieve(ex_data, &d); - if(!p) - { - gen = OPENSSL_malloc(sizeof(EX_CLASS_ITEM)); - if(gen) - { - gen->class_index = class_index; - gen->meth_num = 0; - gen->meth = sk_CRYPTO_EX_DATA_FUNCS_new_null(); - if(!gen->meth) - OPENSSL_free(gen); - else - { - /* Because we're inside the ex_data lock, the - * return value from the insert will be NULL */ - (void)lh_EX_CLASS_ITEM_insert(ex_data, gen); - p = gen; - } - } - } - CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA); - if(!p) - CRYPTOerr(CRYPTO_F_DEF_GET_CLASS,ERR_R_MALLOC_FAILURE); - return p; - } - -/* Add a new method to the given EX_CLASS_ITEM and return the corresponding - * index (or -1 for error). Handles locking. */ +{ + EX_CLASS_ITEM d, *p, *gen; + EX_DATA_CHECK(return NULL;) + d.class_index = class_index; + CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA); + p = lh_EX_CLASS_ITEM_retrieve(ex_data, &d); + if (!p) { + gen = OPENSSL_malloc(sizeof(EX_CLASS_ITEM)); + if (gen) { + gen->class_index = class_index; + gen->meth_num = 0; + gen->meth = sk_CRYPTO_EX_DATA_FUNCS_new_null(); + if (!gen->meth) + OPENSSL_free(gen); + else { + /* + * Because we're inside the ex_data lock, the return value + * from the insert will be NULL + */ + (void)lh_EX_CLASS_ITEM_insert(ex_data, gen); + p = gen; + } + } + } + CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA); + if (!p) + CRYPTOerr(CRYPTO_F_DEF_GET_CLASS, ERR_R_MALLOC_FAILURE); + return p; +} + +/* + * Add a new method to the given EX_CLASS_ITEM and return the corresponding + * index (or -1 for error). Handles locking. + */ static int def_add_index(EX_CLASS_ITEM *item, long argl, void *argp, - CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func, - CRYPTO_EX_free *free_func) - { - int toret = -1; - CRYPTO_EX_DATA_FUNCS *a = (CRYPTO_EX_DATA_FUNCS *)OPENSSL_malloc( - sizeof(CRYPTO_EX_DATA_FUNCS)); - if(!a) - { - CRYPTOerr(CRYPTO_F_DEF_ADD_INDEX,ERR_R_MALLOC_FAILURE); - return -1; - } - a->argl=argl; - a->argp=argp; - a->new_func=new_func; - a->dup_func=dup_func; - a->free_func=free_func; - CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA); - while (sk_CRYPTO_EX_DATA_FUNCS_num(item->meth) <= item->meth_num) - { - if (!sk_CRYPTO_EX_DATA_FUNCS_push(item->meth, NULL)) - { - CRYPTOerr(CRYPTO_F_DEF_ADD_INDEX,ERR_R_MALLOC_FAILURE); - OPENSSL_free(a); - goto err; - } - } - toret = item->meth_num++; - (void)sk_CRYPTO_EX_DATA_FUNCS_set(item->meth, toret, a); -err: - CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA); - return toret; - } + CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func, + CRYPTO_EX_free *free_func) +{ + int toret = -1; + CRYPTO_EX_DATA_FUNCS *a = + (CRYPTO_EX_DATA_FUNCS *)OPENSSL_malloc(sizeof(CRYPTO_EX_DATA_FUNCS)); + if (!a) { + CRYPTOerr(CRYPTO_F_DEF_ADD_INDEX, ERR_R_MALLOC_FAILURE); + return -1; + } + a->argl = argl; + a->argp = argp; + a->new_func = new_func; + a->dup_func = dup_func; + a->free_func = free_func; + CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA); + while (sk_CRYPTO_EX_DATA_FUNCS_num(item->meth) <= item->meth_num) { + if (!sk_CRYPTO_EX_DATA_FUNCS_push(item->meth, NULL)) { + CRYPTOerr(CRYPTO_F_DEF_ADD_INDEX, ERR_R_MALLOC_FAILURE); + OPENSSL_free(a); + goto err; + } + } + toret = item->meth_num++; + (void)sk_CRYPTO_EX_DATA_FUNCS_set(item->meth, toret, a); + err: + CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA); + return toret; +} /**************************************************************/ /* The functions in the default CRYPTO_EX_DATA_IMPL structure */ static int int_new_class(void) - { - int toret; - CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA); - toret = ex_class++; - CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA); - return toret; - } +{ + int toret; + CRYPTO_w_lock(CRYPTO_LOCK_EX_DATA); + toret = ex_class++; + CRYPTO_w_unlock(CRYPTO_LOCK_EX_DATA); + return toret; +} static void int_cleanup(void) - { - EX_DATA_CHECK(return;) - lh_EX_CLASS_ITEM_doall(ex_data, def_cleanup_cb); - lh_EX_CLASS_ITEM_free(ex_data); - ex_data = NULL; - impl = NULL; - } +{ + EX_DATA_CHECK(return;) + lh_EX_CLASS_ITEM_doall(ex_data, def_cleanup_cb); + lh_EX_CLASS_ITEM_free(ex_data); + ex_data = NULL; + impl = NULL; +} static int int_get_new_index(int class_index, long argl, void *argp, - CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func, - CRYPTO_EX_free *free_func) - { - EX_CLASS_ITEM *item = def_get_class(class_index); - if(!item) - return -1; - return def_add_index(item, argl, argp, new_func, dup_func, free_func); - } - -/* Thread-safe by copying a class's array of "CRYPTO_EX_DATA_FUNCS" entries in - * the lock, then using them outside the lock. NB: Thread-safety only applies to - * the global "ex_data" state (ie. class definitions), not thread-safe on 'ad' - * itself. */ -static int int_new_ex_data(int class_index, void *obj, - CRYPTO_EX_DATA *ad) - { - int mx,i; - void *ptr; - CRYPTO_EX_DATA_FUNCS **storage = NULL; - EX_CLASS_ITEM *item = def_get_class(class_index); - if(!item) - /* error is already set */ - return 0; - ad->sk = NULL; - CRYPTO_r_lock(CRYPTO_LOCK_EX_DATA); - mx = sk_CRYPTO_EX_DATA_FUNCS_num(item->meth); - if(mx > 0) - { - storage = OPENSSL_malloc(mx * sizeof(CRYPTO_EX_DATA_FUNCS*)); - if(!storage) - goto skip; - for(i = 0; i < mx; i++) - storage[i] = sk_CRYPTO_EX_DATA_FUNCS_value(item->meth,i); - } -skip: - CRYPTO_r_unlock(CRYPTO_LOCK_EX_DATA); - if((mx > 0) && !storage) - { - CRYPTOerr(CRYPTO_F_INT_NEW_EX_DATA,ERR_R_MALLOC_FAILURE); - return 0; - } - for(i = 0; i < mx; i++) - { - if(storage[i] && storage[i]->new_func) - { - ptr = CRYPTO_get_ex_data(ad, i); - storage[i]->new_func(obj,ptr,ad,i, - storage[i]->argl,storage[i]->argp); - } - } - if(storage) - OPENSSL_free(storage); - return 1; - } + CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func, + CRYPTO_EX_free *free_func) +{ + EX_CLASS_ITEM *item = def_get_class(class_index); + if (!item) + return -1; + return def_add_index(item, argl, argp, new_func, dup_func, free_func); +} + +/* + * Thread-safe by copying a class's array of "CRYPTO_EX_DATA_FUNCS" entries + * in the lock, then using them outside the lock. NB: Thread-safety only + * applies to the global "ex_data" state (ie. class definitions), not + * thread-safe on 'ad' itself. + */ +static int int_new_ex_data(int class_index, void *obj, CRYPTO_EX_DATA *ad) +{ + int mx, i; + void *ptr; + CRYPTO_EX_DATA_FUNCS **storage = NULL; + EX_CLASS_ITEM *item = def_get_class(class_index); + if (!item) + /* error is already set */ + return 0; + ad->sk = NULL; + CRYPTO_r_lock(CRYPTO_LOCK_EX_DATA); + mx = sk_CRYPTO_EX_DATA_FUNCS_num(item->meth); + if (mx > 0) { + storage = OPENSSL_malloc(mx * sizeof(CRYPTO_EX_DATA_FUNCS *)); + if (!storage) + goto skip; + for (i = 0; i < mx; i++) + storage[i] = sk_CRYPTO_EX_DATA_FUNCS_value(item->meth, i); + } + skip: + CRYPTO_r_unlock(CRYPTO_LOCK_EX_DATA); + if ((mx > 0) && !storage) { + CRYPTOerr(CRYPTO_F_INT_NEW_EX_DATA, ERR_R_MALLOC_FAILURE); + return 0; + } + for (i = 0; i < mx; i++) { + if (storage[i] && storage[i]->new_func) { + ptr = CRYPTO_get_ex_data(ad, i); + storage[i]->new_func(obj, ptr, ad, i, + storage[i]->argl, storage[i]->argp); + } + } + if (storage) + OPENSSL_free(storage); + return 1; +} /* Same thread-safety notes as for "int_new_ex_data" */ static int int_dup_ex_data(int class_index, CRYPTO_EX_DATA *to, - CRYPTO_EX_DATA *from) - { - int mx, j, i; - char *ptr; - CRYPTO_EX_DATA_FUNCS **storage = NULL; - EX_CLASS_ITEM *item; - if(!from->sk) - /* 'to' should be "blank" which *is* just like 'from' */ - return 1; - if((item = def_get_class(class_index)) == NULL) - return 0; - CRYPTO_r_lock(CRYPTO_LOCK_EX_DATA); - mx = sk_CRYPTO_EX_DATA_FUNCS_num(item->meth); - j = sk_void_num(from->sk); - if(j < mx) - mx = j; - if(mx > 0) - { - storage = OPENSSL_malloc(mx * sizeof(CRYPTO_EX_DATA_FUNCS*)); - if(!storage) - goto skip; - for(i = 0; i < mx; i++) - storage[i] = sk_CRYPTO_EX_DATA_FUNCS_value(item->meth,i); - } -skip: - CRYPTO_r_unlock(CRYPTO_LOCK_EX_DATA); - if((mx > 0) && !storage) - { - CRYPTOerr(CRYPTO_F_INT_DUP_EX_DATA,ERR_R_MALLOC_FAILURE); - return 0; - } - for(i = 0; i < mx; i++) - { - ptr = CRYPTO_get_ex_data(from, i); - if(storage[i] && storage[i]->dup_func) - storage[i]->dup_func(to,from,&ptr,i, - storage[i]->argl,storage[i]->argp); - CRYPTO_set_ex_data(to,i,ptr); - } - if(storage) - OPENSSL_free(storage); - return 1; - } + CRYPTO_EX_DATA *from) +{ + int mx, j, i; + char *ptr; + CRYPTO_EX_DATA_FUNCS **storage = NULL; + EX_CLASS_ITEM *item; + if (!from->sk) + /* 'to' should be "blank" which *is* just like 'from' */ + return 1; + if ((item = def_get_class(class_index)) == NULL) + return 0; + CRYPTO_r_lock(CRYPTO_LOCK_EX_DATA); + mx = sk_CRYPTO_EX_DATA_FUNCS_num(item->meth); + j = sk_void_num(from->sk); + if (j < mx) + mx = j; + if (mx > 0) { + storage = OPENSSL_malloc(mx * sizeof(CRYPTO_EX_DATA_FUNCS *)); + if (!storage) + goto skip; + for (i = 0; i < mx; i++) + storage[i] = sk_CRYPTO_EX_DATA_FUNCS_value(item->meth, i); + } + skip: + CRYPTO_r_unlock(CRYPTO_LOCK_EX_DATA); + if ((mx > 0) && !storage) { + CRYPTOerr(CRYPTO_F_INT_DUP_EX_DATA, ERR_R_MALLOC_FAILURE); + return 0; + } + for (i = 0; i < mx; i++) { + ptr = CRYPTO_get_ex_data(from, i); + if (storage[i] && storage[i]->dup_func) + storage[i]->dup_func(to, from, &ptr, i, + storage[i]->argl, storage[i]->argp); + CRYPTO_set_ex_data(to, i, ptr); + } + if (storage) + OPENSSL_free(storage); + return 1; +} /* Same thread-safety notes as for "int_new_ex_data" */ -static void int_free_ex_data(int class_index, void *obj, - CRYPTO_EX_DATA *ad) - { - int mx,i; - EX_CLASS_ITEM *item; - void *ptr; - CRYPTO_EX_DATA_FUNCS **storage = NULL; - if((item = def_get_class(class_index)) == NULL) - return; - CRYPTO_r_lock(CRYPTO_LOCK_EX_DATA); - mx = sk_CRYPTO_EX_DATA_FUNCS_num(item->meth); - if(mx > 0) - { - storage = OPENSSL_malloc(mx * sizeof(CRYPTO_EX_DATA_FUNCS*)); - if(!storage) - goto skip; - for(i = 0; i < mx; i++) - storage[i] = sk_CRYPTO_EX_DATA_FUNCS_value(item->meth,i); - } -skip: - CRYPTO_r_unlock(CRYPTO_LOCK_EX_DATA); - if((mx > 0) && !storage) - { - CRYPTOerr(CRYPTO_F_INT_FREE_EX_DATA,ERR_R_MALLOC_FAILURE); - return; - } - for(i = 0; i < mx; i++) - { - if(storage[i] && storage[i]->free_func) - { - ptr = CRYPTO_get_ex_data(ad,i); - storage[i]->free_func(obj,ptr,ad,i, - storage[i]->argl,storage[i]->argp); - } - } - if(storage) - OPENSSL_free(storage); - if(ad->sk) - { - sk_void_free(ad->sk); - ad->sk=NULL; - } - } +static void int_free_ex_data(int class_index, void *obj, CRYPTO_EX_DATA *ad) +{ + int mx, i; + EX_CLASS_ITEM *item; + void *ptr; + CRYPTO_EX_DATA_FUNCS **storage = NULL; + if ((item = def_get_class(class_index)) == NULL) + return; + CRYPTO_r_lock(CRYPTO_LOCK_EX_DATA); + mx = sk_CRYPTO_EX_DATA_FUNCS_num(item->meth); + if (mx > 0) { + storage = OPENSSL_malloc(mx * sizeof(CRYPTO_EX_DATA_FUNCS *)); + if (!storage) + goto skip; + for (i = 0; i < mx; i++) + storage[i] = sk_CRYPTO_EX_DATA_FUNCS_value(item->meth, i); + } + skip: + CRYPTO_r_unlock(CRYPTO_LOCK_EX_DATA); + if ((mx > 0) && !storage) { + CRYPTOerr(CRYPTO_F_INT_FREE_EX_DATA, ERR_R_MALLOC_FAILURE); + return; + } + for (i = 0; i < mx; i++) { + if (storage[i] && storage[i]->free_func) { + ptr = CRYPTO_get_ex_data(ad, i); + storage[i]->free_func(obj, ptr, ad, i, + storage[i]->argl, storage[i]->argp); + } + } + if (storage) + OPENSSL_free(storage); + if (ad->sk) { + sk_void_free(ad->sk); + ad->sk = NULL; + } +} /********************************************************************/ -/* API functions that defer all "state" operations to the "ex_data" - * implementation we have set. */ +/* + * API functions that defer all "state" operations to the "ex_data" + * implementation we have set. + */ -/* Obtain an index for a new class (not the same as getting a new index within - * an existing class - this is actually getting a new *class*) */ +/* + * Obtain an index for a new class (not the same as getting a new index + * within an existing class - this is actually getting a new *class*) + */ int CRYPTO_ex_data_new_class(void) - { - IMPL_CHECK - return EX_IMPL(new_class)(); - } +{ + IMPL_CHECK return EX_IMPL(new_class) (); +} -/* Release all "ex_data" state to prevent memory leaks. This can't be made +/* + * Release all "ex_data" state to prevent memory leaks. This can't be made * thread-safe without overhauling a lot of stuff, and shouldn't really be * called under potential race-conditions anyway (it's for program shutdown - * after all). */ + * after all). + */ void CRYPTO_cleanup_all_ex_data(void) - { - IMPL_CHECK - EX_IMPL(cleanup)(); - } +{ + IMPL_CHECK EX_IMPL(cleanup) (); +} /* Inside an existing class, get/register a new index. */ int CRYPTO_get_ex_new_index(int class_index, long argl, void *argp, - CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func, - CRYPTO_EX_free *free_func) - { - int ret = -1; - - IMPL_CHECK - ret = EX_IMPL(get_new_index)(class_index, - argl, argp, new_func, dup_func, free_func); - return ret; - } - -/* Initialise a new CRYPTO_EX_DATA for use in a particular class - including - * calling new() callbacks for each index in the class used by this variable */ + CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func, + CRYPTO_EX_free *free_func) +{ + int ret = -1; + + IMPL_CHECK + ret = EX_IMPL(get_new_index) (class_index, + argl, argp, new_func, dup_func, + free_func); + return ret; +} + +/* + * Initialise a new CRYPTO_EX_DATA for use in a particular class - including + * calling new() callbacks for each index in the class used by this variable + */ int CRYPTO_new_ex_data(int class_index, void *obj, CRYPTO_EX_DATA *ad) - { - IMPL_CHECK - return EX_IMPL(new_ex_data)(class_index, obj, ad); - } +{ + IMPL_CHECK return EX_IMPL(new_ex_data) (class_index, obj, ad); +} -/* Duplicate a CRYPTO_EX_DATA variable - including calling dup() callbacks for - * each index in the class used by this variable */ +/* + * Duplicate a CRYPTO_EX_DATA variable - including calling dup() callbacks + * for each index in the class used by this variable + */ int CRYPTO_dup_ex_data(int class_index, CRYPTO_EX_DATA *to, - CRYPTO_EX_DATA *from) - { - IMPL_CHECK - return EX_IMPL(dup_ex_data)(class_index, to, from); - } - -/* Cleanup a CRYPTO_EX_DATA variable - including calling free() callbacks for - * each index in the class used by this variable */ + CRYPTO_EX_DATA *from) +{ + IMPL_CHECK return EX_IMPL(dup_ex_data) (class_index, to, from); +} + +/* + * Cleanup a CRYPTO_EX_DATA variable - including calling free() callbacks for + * each index in the class used by this variable + */ void CRYPTO_free_ex_data(int class_index, void *obj, CRYPTO_EX_DATA *ad) - { - IMPL_CHECK - EX_IMPL(free_ex_data)(class_index, obj, ad); - } +{ + IMPL_CHECK EX_IMPL(free_ex_data) (class_index, obj, ad); +} -/* For a given CRYPTO_EX_DATA variable, set the value corresponding to a - * particular index in the class used by this variable */ +/* + * For a given CRYPTO_EX_DATA variable, set the value corresponding to a + * particular index in the class used by this variable + */ int CRYPTO_set_ex_data(CRYPTO_EX_DATA *ad, int idx, void *val) - { - int i; - - if (ad->sk == NULL) - { - if ((ad->sk=sk_void_new_null()) == NULL) - { - CRYPTOerr(CRYPTO_F_CRYPTO_SET_EX_DATA,ERR_R_MALLOC_FAILURE); - return(0); - } - } - i=sk_void_num(ad->sk); - - while (i <= idx) - { - if (!sk_void_push(ad->sk,NULL)) - { - CRYPTOerr(CRYPTO_F_CRYPTO_SET_EX_DATA,ERR_R_MALLOC_FAILURE); - return(0); - } - i++; - } - sk_void_set(ad->sk,idx,val); - return(1); - } - -/* For a given CRYPTO_EX_DATA_ variable, get the value corresponding to a - * particular index in the class used by this variable */ +{ + int i; + + if (ad->sk == NULL) { + if ((ad->sk = sk_void_new_null()) == NULL) { + CRYPTOerr(CRYPTO_F_CRYPTO_SET_EX_DATA, ERR_R_MALLOC_FAILURE); + return (0); + } + } + i = sk_void_num(ad->sk); + + while (i <= idx) { + if (!sk_void_push(ad->sk, NULL)) { + CRYPTOerr(CRYPTO_F_CRYPTO_SET_EX_DATA, ERR_R_MALLOC_FAILURE); + return (0); + } + i++; + } + sk_void_set(ad->sk, idx, val); + return (1); +} + +/* + * For a given CRYPTO_EX_DATA_ variable, get the value corresponding to a + * particular index in the class used by this variable + */ void *CRYPTO_get_ex_data(const CRYPTO_EX_DATA *ad, int idx) - { - if (ad->sk == NULL) - return(0); - else if (idx >= sk_void_num(ad->sk)) - return(0); - else - return(sk_void_value(ad->sk,idx)); - } +{ + if (ad->sk == NULL) + return (0); + else if (idx >= sk_void_num(ad->sk)) + return (0); + else + return (sk_void_value(ad->sk, idx)); +} IMPLEMENT_STACK_OF(CRYPTO_EX_DATA_FUNCS) |