diff options
Diffstat (limited to 'crypto/err/err_def.c')
| -rw-r--r-- | crypto/err/err_def.c | 665 |
1 files changed, 665 insertions, 0 deletions
diff --git a/crypto/err/err_def.c b/crypto/err/err_def.c new file mode 100644 index 0000000..7ed3d84 --- /dev/null +++ b/crypto/err/err_def.c @@ -0,0 +1,665 @@ +/* crypto/err/err_def.c */ +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * 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: + * 1. Redistributions of source code must retain the copyright + * 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 the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * "This product includes cryptographic software written by + * 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 + * 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 + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * 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 + * [including the GNU Public Licence.] + */ +/* ==================================================================== + * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * 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 + * the documentation and/or other materials provided with the + * distribution. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * openssl-core@openssl.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.openssl.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT 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. + * ==================================================================== + * + * This product includes cryptographic software written by Eric Young + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). + * + */ + +#include <stdio.h> +#include <stdarg.h> +#include <string.h> +#include "cryptlib.h" +#include <openssl/lhash.h> +#include <openssl/crypto.h> +#include <openssl/buffer.h> +#include <openssl/bio.h> +#include <openssl/err.h> + +#define err_clear_data(p,i) \ + do { \ + if (((p)->err_data[i] != NULL) && \ + (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \ + { \ + OPENSSL_free((p)->err_data[i]); \ + (p)->err_data[i]=NULL; \ + } \ + (p)->err_data_flags[i]=0; \ + } while(0) + +#define err_clear(p,i) \ + do { \ + (p)->err_flags[i]=0; \ + (p)->err_buffer[i]=0; \ + err_clear_data(p,i); \ + (p)->err_file[i]=NULL; \ + (p)->err_line[i]= -1; \ + } while(0) + +static void err_load_strings(int lib, ERR_STRING_DATA *str); + +static void ERR_STATE_free(ERR_STATE *s); + +/* Define the predeclared (but externally opaque) "ERR_FNS" type */ +struct st_ERR_FNS + { + /* Works on the "error_hash" string table */ + LHASH *(*cb_err_get)(int create); + void (*cb_err_del)(void); + ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *); + ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *); + ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *); + /* Works on the "thread_hash" error-state table */ + LHASH *(*cb_thread_get)(int create); + void (*cb_thread_release)(LHASH **hash); + ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *); + ERR_STATE *(*cb_thread_set_item)(ERR_STATE *); + void (*cb_thread_del_item)(const ERR_STATE *); + /* Returns the next available error "library" numbers */ + int (*cb_get_next_lib)(void); + }; + +/* Predeclarations of the "err_defaults" functions */ +static LHASH *int_err_get(int create); +static void int_err_del(void); +static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); +static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *); +static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *); +static LHASH *int_thread_get(int create); +static void int_thread_release(LHASH **hash); +static ERR_STATE *int_thread_get_item(const ERR_STATE *); +static ERR_STATE *int_thread_set_item(ERR_STATE *); +static void int_thread_del_item(const ERR_STATE *); +static int int_err_get_next_lib(void); +/* The static ERR_FNS table using these defaults functions */ +static const ERR_FNS err_defaults = + { + int_err_get, + int_err_del, + int_err_get_item, + int_err_set_item, + int_err_del_item, + int_thread_get, + int_thread_release, + int_thread_get_item, + int_thread_set_item, + int_thread_del_item, + int_err_get_next_lib + }; + +/* The replacable table of ERR_FNS functions we use at run-time */ +static const ERR_FNS *err_fns = NULL; + +/* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */ +#define ERRFN(a) err_fns->cb_##a + +/* The internal state used by "err_defaults" - as such, the setting, reading, + * creating, and deleting of this data should only be permitted via the + * "err_defaults" functions. This way, a linked module can completely defer all + * ERR state operation (together with requisite locking) to the implementations + * and state in the loading application. */ +static LHASH *int_error_hash = NULL; +static LHASH *int_thread_hash = NULL; +static int int_thread_hash_references = 0; +static int int_err_library_number= ERR_LIB_USER; + +/* Internal function that checks whether "err_fns" is set and if not, sets it to + * the defaults. */ +static void err_fns_check(void) + { + if (err_fns) return; + + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + if (!err_fns) + err_fns = &err_defaults; + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + } + +/* API functions to get or set the underlying ERR functions. */ + +const ERR_FNS *ERR_get_implementation(void) + { + err_fns_check(); + return err_fns; + } + +int ERR_set_implementation(const ERR_FNS *fns) + { + int ret = 0; + + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting + * an error is there?! */ + if (!err_fns) + { + err_fns = fns; + ret = 1; + } + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + return ret; + } + +/* These are the callbacks provided to "lh_new()" when creating the LHASH tables + * internal to the "err_defaults" implementation. */ + +/* static unsigned long err_hash(ERR_STRING_DATA *a); */ +static unsigned long err_hash(const void *a_void); +/* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b); */ +static int err_cmp(const void *a_void, const void *b_void); +/* static unsigned long pid_hash(ERR_STATE *pid); */ +static unsigned long pid_hash(const void *pid_void); +/* static int pid_cmp(ERR_STATE *a,ERR_STATE *pid); */ +static int pid_cmp(const void *a_void,const void *pid_void); + +/* The internal functions used in the "err_defaults" implementation */ + +static LHASH *int_err_get(int create) + { + LHASH *ret = NULL; + + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + if (!int_error_hash && create) + { + CRYPTO_push_info("int_err_get (err.c)"); + int_error_hash = lh_new(err_hash, err_cmp); + CRYPTO_pop_info(); + } + if (int_error_hash) + ret = int_error_hash; + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + + return ret; + } + +static void int_err_del(void) + { + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + if (int_error_hash) + { + lh_free(int_error_hash); + int_error_hash = NULL; + } + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + } + +static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d) + { + ERR_STRING_DATA *p; + LHASH *hash; + + err_fns_check(); + hash = ERRFN(err_get)(0); + if (!hash) + return NULL; + + CRYPTO_r_lock(CRYPTO_LOCK_ERR); + p = (ERR_STRING_DATA *)lh_retrieve(hash, d); + CRYPTO_r_unlock(CRYPTO_LOCK_ERR); + + return p; + } + +static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *d) + { + ERR_STRING_DATA *p; + LHASH *hash; + + err_fns_check(); + hash = ERRFN(err_get)(1); + if (!hash) + return NULL; + + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + p = (ERR_STRING_DATA *)lh_insert(hash, d); + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + + return p; + } + +static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *d) + { + ERR_STRING_DATA *p; + LHASH *hash; + + err_fns_check(); + hash = ERRFN(err_get)(0); + if (!hash) + return NULL; + + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + p = (ERR_STRING_DATA *)lh_delete(hash, d); + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + + return p; + } + +static LHASH *int_thread_get(int create) + { + LHASH *ret = NULL; + + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + if (!int_thread_hash && create) + { + CRYPTO_push_info("int_thread_get (err.c)"); + int_thread_hash = lh_new(pid_hash, pid_cmp); + CRYPTO_pop_info(); + } + if (int_thread_hash) + { + int_thread_hash_references++; + ret = int_thread_hash; + } + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + return ret; + } + +static void int_thread_release(LHASH **hash) + { + int i; + + if (hash == NULL || *hash == NULL) + return; + + i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR); + +#ifdef REF_PRINT + fprintf(stderr,"%4d:%s\n",int_thread_hash_references,"ERR"); +#endif + if (i > 0) return; +#ifdef REF_CHECK + if (i < 0) + { + fprintf(stderr,"int_thread_release, bad reference count\n"); + abort(); /* ok */ + } +#endif + *hash = NULL; + } + +static ERR_STATE *int_thread_get_item(const ERR_STATE *d) + { + ERR_STATE *p; + LHASH *hash; + + err_fns_check(); + hash = ERRFN(thread_get)(0); + if (!hash) + return NULL; + + CRYPTO_r_lock(CRYPTO_LOCK_ERR); + p = (ERR_STATE *)lh_retrieve(hash, d); + CRYPTO_r_unlock(CRYPTO_LOCK_ERR); + + ERRFN(thread_release)(&hash); + return p; + } + +static ERR_STATE *int_thread_set_item(ERR_STATE *d) + { + ERR_STATE *p; + LHASH *hash; + + err_fns_check(); + hash = ERRFN(thread_get)(1); + if (!hash) + return NULL; + + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + p = (ERR_STATE *)lh_insert(hash, d); + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + + ERRFN(thread_release)(&hash); + return p; + } + +static void int_thread_del_item(const ERR_STATE *d) + { + ERR_STATE *p; + LHASH *hash; + + err_fns_check(); + hash = ERRFN(thread_get)(0); + if (!hash) + return; + + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + p = (ERR_STATE *)lh_delete(hash, d); + /* make sure we don't leak memory */ + if (int_thread_hash_references == 1 + && int_thread_hash && (lh_num_items(int_thread_hash) == 0)) + { + lh_free(int_thread_hash); + int_thread_hash = NULL; + } + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + + ERRFN(thread_release)(&hash); + if (p) + ERR_STATE_free(p); + } + +static int int_err_get_next_lib(void) + { + int ret; + + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + ret = int_err_library_number++; + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + + return ret; + } + +static void ERR_STATE_free(ERR_STATE *s) + { + int i; + + if (s == NULL) + return; + + for (i=0; i<ERR_NUM_ERRORS; i++) + { + err_clear_data(s,i); + } + OPENSSL_free(s); + } + +static void err_load_strings(int lib, ERR_STRING_DATA *str) + { + while (str->error) + { + if (lib) + str->error|=ERR_PACK(lib,0,0); + ERRFN(err_set_item)(str); + str++; + } + } + +void ERR_load_strings(int lib, ERR_STRING_DATA *str) + { + err_fns_check(); + err_load_strings(lib, str); + } + +void ERR_unload_strings(int lib, ERR_STRING_DATA *str) + { + while (str->error) + { + if (lib) + str->error|=ERR_PACK(lib,0,0); + ERRFN(err_del_item)(str); + str++; + } + } + +void ERR_free_strings(void) + { + err_fns_check(); + ERRFN(err_del)(); + } + +LHASH *ERR_get_string_table(void) + { + err_fns_check(); + return ERRFN(err_get)(0); + } + +LHASH *ERR_get_err_state_table(void) + { + err_fns_check(); + return ERRFN(thread_get)(0); + } + +void ERR_release_err_state_table(LHASH **hash) + { + err_fns_check(); + ERRFN(thread_release)(hash); + } + +const char *ERR_lib_error_string(unsigned long e) + { + ERR_STRING_DATA d,*p; + unsigned long l; + + err_fns_check(); + l=ERR_GET_LIB(e); + d.error=ERR_PACK(l,0,0); + p=ERRFN(err_get_item)(&d); + return((p == NULL)?NULL:p->string); + } + +const char *ERR_func_error_string(unsigned long e) + { + ERR_STRING_DATA d,*p; + unsigned long l,f; + + err_fns_check(); + l=ERR_GET_LIB(e); + f=ERR_GET_FUNC(e); + d.error=ERR_PACK(l,f,0); + p=ERRFN(err_get_item)(&d); + return((p == NULL)?NULL:p->string); + } + +const char *ERR_reason_error_string(unsigned long e) + { + ERR_STRING_DATA d,*p=NULL; + unsigned long l,r; + + err_fns_check(); + l=ERR_GET_LIB(e); + r=ERR_GET_REASON(e); + d.error=ERR_PACK(l,0,r); + p=ERRFN(err_get_item)(&d); + if (!p) + { + d.error=ERR_PACK(0,0,r); + p=ERRFN(err_get_item)(&d); + } + return((p == NULL)?NULL:p->string); + } + +/* static unsigned long err_hash(ERR_STRING_DATA *a) */ +static unsigned long err_hash(const void *a_void) + { + unsigned long ret,l; + + l=((const ERR_STRING_DATA *)a_void)->error; + ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); + return(ret^ret%19*13); + } + +/* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b) */ +static int err_cmp(const void *a_void, const void *b_void) + { + return((int)(((const ERR_STRING_DATA *)a_void)->error - + ((const ERR_STRING_DATA *)b_void)->error)); + } + +/* static unsigned long pid_hash(ERR_STATE *a) */ +static unsigned long pid_hash(const void *a_void) + { + return(((const ERR_STATE *)a_void)->pid*13); + } + +/* static int pid_cmp(ERR_STATE *a, ERR_STATE *b) */ +static int pid_cmp(const void *a_void, const void *b_void) + { + return((int)((long)((const ERR_STATE *)a_void)->pid - + (long)((const ERR_STATE *)b_void)->pid)); + } +#ifdef OPENSSL_FIPS +static void int_err_remove_state(unsigned long pid) +#else +void ERR_remove_state(unsigned long pid) +#endif + { + ERR_STATE tmp; + + err_fns_check(); + if (pid == 0) + pid=(unsigned long)CRYPTO_thread_id(); + tmp.pid=pid; + /* thread_del_item automatically destroys the LHASH if the number of + * items reaches zero. */ + ERRFN(thread_del_item)(&tmp); + } + +#ifdef OPENSSL_FIPS + static ERR_STATE *int_err_get_state(void) +#else +ERR_STATE *ERR_get_state(void) +#endif + { + static ERR_STATE fallback; + ERR_STATE *ret,tmp,*tmpp=NULL; + int i; + unsigned long pid; + + err_fns_check(); + pid=(unsigned long)CRYPTO_thread_id(); + tmp.pid=pid; + ret=ERRFN(thread_get_item)(&tmp); + + /* ret == the error state, if NULL, make a new one */ + if (ret == NULL) + { + ret=(ERR_STATE *)OPENSSL_malloc(sizeof(ERR_STATE)); + if (ret == NULL) return(&fallback); + ret->pid=pid; + ret->top=0; + ret->bottom=0; + for (i=0; i<ERR_NUM_ERRORS; i++) + { + ret->err_data[i]=NULL; + ret->err_data_flags[i]=0; + } + tmpp = ERRFN(thread_set_item)(ret); + /* To check if insertion failed, do a get. */ + if (ERRFN(thread_get_item)(ret) != ret) + { + ERR_STATE_free(ret); /* could not insert it */ + return(&fallback); + } + /* If a race occured in this function and we came second, tmpp + * is the first one that we just replaced. */ + if (tmpp) + ERR_STATE_free(tmpp); + } + return ret; + } + +#ifdef OPENSSL_FIPS +void int_ERR_lib_init(void) + { + int_ERR_set_state_func(int_err_get_state, int_err_remove_state); + } +#endif + +int ERR_get_next_error_library(void) + { + err_fns_check(); + return ERRFN(get_next_lib)(); + } |
