diff options
Diffstat (limited to 'openssl/crypto/err/err.c')
| -rw-r--r-- | openssl/crypto/err/err.c | 1148 |
1 files changed, 1148 insertions, 0 deletions
diff --git a/openssl/crypto/err/err.c b/openssl/crypto/err/err.c new file mode 100644 index 0000000..52dc9a5 --- /dev/null +++ b/openssl/crypto/err/err.c @@ -0,0 +1,1148 @@ +/* crypto/err/err.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) 1998-2006 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> + +DECLARE_LHASH_OF(ERR_STRING_DATA); +DECLARE_LHASH_OF(ERR_STATE); + +static void err_load_strings(int lib, ERR_STRING_DATA *str); + +static void ERR_STATE_free(ERR_STATE *s); +#ifndef OPENSSL_NO_ERR +static ERR_STRING_DATA ERR_str_libraries[] = { + {ERR_PACK(ERR_LIB_NONE, 0, 0), "unknown library"}, + {ERR_PACK(ERR_LIB_SYS, 0, 0), "system library"}, + {ERR_PACK(ERR_LIB_BN, 0, 0), "bignum routines"}, + {ERR_PACK(ERR_LIB_RSA, 0, 0), "rsa routines"}, + {ERR_PACK(ERR_LIB_DH, 0, 0), "Diffie-Hellman routines"}, + {ERR_PACK(ERR_LIB_EVP, 0, 0), "digital envelope routines"}, + {ERR_PACK(ERR_LIB_BUF, 0, 0), "memory buffer routines"}, + {ERR_PACK(ERR_LIB_OBJ, 0, 0), "object identifier routines"}, + {ERR_PACK(ERR_LIB_PEM, 0, 0), "PEM routines"}, + {ERR_PACK(ERR_LIB_DSA, 0, 0), "dsa routines"}, + {ERR_PACK(ERR_LIB_X509, 0, 0), "x509 certificate routines"}, + {ERR_PACK(ERR_LIB_ASN1, 0, 0), "asn1 encoding routines"}, + {ERR_PACK(ERR_LIB_CONF, 0, 0), "configuration file routines"}, + {ERR_PACK(ERR_LIB_CRYPTO, 0, 0), "common libcrypto routines"}, + {ERR_PACK(ERR_LIB_EC, 0, 0), "elliptic curve routines"}, + {ERR_PACK(ERR_LIB_SSL, 0, 0), "SSL routines"}, + {ERR_PACK(ERR_LIB_BIO, 0, 0), "BIO routines"}, + {ERR_PACK(ERR_LIB_PKCS7, 0, 0), "PKCS7 routines"}, + {ERR_PACK(ERR_LIB_X509V3, 0, 0), "X509 V3 routines"}, + {ERR_PACK(ERR_LIB_PKCS12, 0, 0), "PKCS12 routines"}, + {ERR_PACK(ERR_LIB_RAND, 0, 0), "random number generator"}, + {ERR_PACK(ERR_LIB_DSO, 0, 0), "DSO support routines"}, + {ERR_PACK(ERR_LIB_TS, 0, 0), "time stamp routines"}, + {ERR_PACK(ERR_LIB_ENGINE, 0, 0), "engine routines"}, + {ERR_PACK(ERR_LIB_OCSP, 0, 0), "OCSP routines"}, + {ERR_PACK(ERR_LIB_FIPS, 0, 0), "FIPS routines"}, + {ERR_PACK(ERR_LIB_CMS, 0, 0), "CMS routines"}, + {ERR_PACK(ERR_LIB_HMAC, 0, 0), "HMAC routines"}, + {0, NULL}, +}; + +static ERR_STRING_DATA ERR_str_functs[] = { + {ERR_PACK(0, SYS_F_FOPEN, 0), "fopen"}, + {ERR_PACK(0, SYS_F_CONNECT, 0), "connect"}, + {ERR_PACK(0, SYS_F_GETSERVBYNAME, 0), "getservbyname"}, + {ERR_PACK(0, SYS_F_SOCKET, 0), "socket"}, + {ERR_PACK(0, SYS_F_IOCTLSOCKET, 0), "ioctlsocket"}, + {ERR_PACK(0, SYS_F_BIND, 0), "bind"}, + {ERR_PACK(0, SYS_F_LISTEN, 0), "listen"}, + {ERR_PACK(0, SYS_F_ACCEPT, 0), "accept"}, +# ifdef OPENSSL_SYS_WINDOWS + {ERR_PACK(0, SYS_F_WSASTARTUP, 0), "WSAstartup"}, +# endif + {ERR_PACK(0, SYS_F_OPENDIR, 0), "opendir"}, + {ERR_PACK(0, SYS_F_FREAD, 0), "fread"}, + {0, NULL}, +}; + +static ERR_STRING_DATA ERR_str_reasons[] = { + {ERR_R_SYS_LIB, "system lib"}, + {ERR_R_BN_LIB, "BN lib"}, + {ERR_R_RSA_LIB, "RSA lib"}, + {ERR_R_DH_LIB, "DH lib"}, + {ERR_R_EVP_LIB, "EVP lib"}, + {ERR_R_BUF_LIB, "BUF lib"}, + {ERR_R_OBJ_LIB, "OBJ lib"}, + {ERR_R_PEM_LIB, "PEM lib"}, + {ERR_R_DSA_LIB, "DSA lib"}, + {ERR_R_X509_LIB, "X509 lib"}, + {ERR_R_ASN1_LIB, "ASN1 lib"}, + {ERR_R_CONF_LIB, "CONF lib"}, + {ERR_R_CRYPTO_LIB, "CRYPTO lib"}, + {ERR_R_EC_LIB, "EC lib"}, + {ERR_R_SSL_LIB, "SSL lib"}, + {ERR_R_BIO_LIB, "BIO lib"}, + {ERR_R_PKCS7_LIB, "PKCS7 lib"}, + {ERR_R_X509V3_LIB, "X509V3 lib"}, + {ERR_R_PKCS12_LIB, "PKCS12 lib"}, + {ERR_R_RAND_LIB, "RAND lib"}, + {ERR_R_DSO_LIB, "DSO lib"}, + {ERR_R_ENGINE_LIB, "ENGINE lib"}, + {ERR_R_OCSP_LIB, "OCSP lib"}, + {ERR_R_TS_LIB, "TS lib"}, + + {ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"}, + {ERR_R_BAD_ASN1_OBJECT_HEADER, "bad asn1 object header"}, + {ERR_R_BAD_GET_ASN1_OBJECT_CALL, "bad get asn1 object call"}, + {ERR_R_EXPECTING_AN_ASN1_SEQUENCE, "expecting an asn1 sequence"}, + {ERR_R_ASN1_LENGTH_MISMATCH, "asn1 length mismatch"}, + {ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"}, + + {ERR_R_FATAL, "fatal"}, + {ERR_R_MALLOC_FAILURE, "malloc failure"}, + {ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED, + "called a function you should not call"}, + {ERR_R_PASSED_NULL_PARAMETER, "passed a null parameter"}, + {ERR_R_INTERNAL_ERROR, "internal error"}, + {ERR_R_DISABLED, "called a function that was disabled at compile-time"}, + + {0, NULL}, +}; +#endif + +/* Define the predeclared (but externally opaque) "ERR_FNS" type */ +struct st_ERR_FNS { + /* Works on the "error_hash" string table */ + LHASH_OF(ERR_STRING_DATA) *(*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_OF(ERR_STATE) *(*cb_thread_get) (int create); + void (*cb_thread_release) (LHASH_OF(ERR_STATE) **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_OF(ERR_STRING_DATA) *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_OF(ERR_STATE) *int_thread_get(int create); +static void int_thread_release(LHASH_OF(ERR_STATE) **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_OF(ERR_STRING_DATA) *int_error_hash = NULL; +static LHASH_OF(ERR_STATE) *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 get_error_values(int inc, int top, const char **file, + int *line, const char **data, + int *flags); + +/* The internal functions used in the "err_defaults" implementation */ + +static unsigned long err_string_data_hash(const ERR_STRING_DATA *a) +{ + unsigned long ret, l; + + l = a->error; + ret = l ^ ERR_GET_LIB(l) ^ ERR_GET_FUNC(l); + return (ret ^ ret % 19 * 13); +} + +static IMPLEMENT_LHASH_HASH_FN(err_string_data, ERR_STRING_DATA) + +static int err_string_data_cmp(const ERR_STRING_DATA *a, + const ERR_STRING_DATA *b) +{ + return (int)(a->error - b->error); +} + +static IMPLEMENT_LHASH_COMP_FN(err_string_data, ERR_STRING_DATA) + +static LHASH_OF(ERR_STRING_DATA) *int_err_get(int create) +{ + LHASH_OF(ERR_STRING_DATA) *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_ERR_STRING_DATA_new(); + 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_ERR_STRING_DATA_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_OF(ERR_STRING_DATA) *hash; + + err_fns_check(); + hash = ERRFN(err_get) (0); + if (!hash) + return NULL; + + CRYPTO_r_lock(CRYPTO_LOCK_ERR); + p = lh_ERR_STRING_DATA_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_OF(ERR_STRING_DATA) *hash; + + err_fns_check(); + hash = ERRFN(err_get) (1); + if (!hash) + return NULL; + + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + p = lh_ERR_STRING_DATA_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_OF(ERR_STRING_DATA) *hash; + + err_fns_check(); + hash = ERRFN(err_get) (0); + if (!hash) + return NULL; + + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + p = lh_ERR_STRING_DATA_delete(hash, d); + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + + return p; +} + +static unsigned long err_state_hash(const ERR_STATE *a) +{ + return CRYPTO_THREADID_hash(&a->tid) * 13; +} + +static IMPLEMENT_LHASH_HASH_FN(err_state, ERR_STATE) + +static int err_state_cmp(const ERR_STATE *a, const ERR_STATE *b) +{ + return CRYPTO_THREADID_cmp(&a->tid, &b->tid); +} + +static IMPLEMENT_LHASH_COMP_FN(err_state, ERR_STATE) + +static LHASH_OF(ERR_STATE) *int_thread_get(int create) +{ + LHASH_OF(ERR_STATE) *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_ERR_STATE_new(); + 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_OF(ERR_STATE) **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_OF(ERR_STATE) *hash; + + err_fns_check(); + hash = ERRFN(thread_get) (0); + if (!hash) + return NULL; + + CRYPTO_r_lock(CRYPTO_LOCK_ERR); + p = lh_ERR_STATE_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_OF(ERR_STATE) *hash; + + err_fns_check(); + hash = ERRFN(thread_get) (1); + if (!hash) + return NULL; + + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + p = lh_ERR_STATE_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_OF(ERR_STATE) *hash; + + err_fns_check(); + hash = ERRFN(thread_get) (0); + if (!hash) + return; + + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + p = lh_ERR_STATE_delete(hash, d); + /* make sure we don't leak memory */ + if (int_thread_hash_references == 1 + && int_thread_hash && lh_ERR_STATE_num_items(int_thread_hash) == 0) { + lh_ERR_STATE_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; +} + +#ifndef OPENSSL_NO_ERR +# define NUM_SYS_STR_REASONS 127 +# define LEN_SYS_STR_REASON 32 + +static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; +/* + * SYS_str_reasons is filled with copies of strerror() results at + * initialization. 'errno' values up to 127 should cover all usual errors, + * others will be displayed numerically by ERR_error_string. It is crucial + * that we have something for each reason code that occurs in + * ERR_str_reasons, or bogus reason strings will be returned for SYSerr(), + * which always gets an errno value and never one of those 'standard' reason + * codes. + */ + +static void build_SYS_str_reasons(void) +{ + /* OPENSSL_malloc cannot be used here, use static storage instead */ + static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; + int i; + static int init = 1; + + CRYPTO_r_lock(CRYPTO_LOCK_ERR); + if (!init) { + CRYPTO_r_unlock(CRYPTO_LOCK_ERR); + return; + } + + CRYPTO_r_unlock(CRYPTO_LOCK_ERR); + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + if (!init) { + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + return; + } + + for (i = 1; i <= NUM_SYS_STR_REASONS; i++) { + ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; + + str->error = (unsigned long)i; + if (str->string == NULL) { + char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]); + char *src = strerror(i); + if (src != NULL) { + strncpy(*dest, src, sizeof *dest); + (*dest)[sizeof *dest - 1] = '\0'; + str->string = *dest; + } + } + if (str->string == NULL) + str->string = "unknown"; + } + + /* + * Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, as + * required by ERR_load_strings. + */ + + init = 0; + + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); +} +#endif + +#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_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); +} + +void ERR_load_ERR_strings(void) +{ + err_fns_check(); +#ifndef OPENSSL_NO_ERR + err_load_strings(0, ERR_str_libraries); + err_load_strings(0, ERR_str_reasons); + err_load_strings(ERR_LIB_SYS, ERR_str_functs); + build_SYS_str_reasons(); + err_load_strings(ERR_LIB_SYS, SYS_str_reasons); +#endif +} + +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_load_ERR_strings(); + 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) (); +} + +/********************************************************/ + +void ERR_put_error(int lib, int func, int reason, const char *file, int line) +{ + ERR_STATE *es; + +#ifdef _OSD_POSIX + /* + * In the BS2000-OSD POSIX subsystem, the compiler generates path names + * in the form "*POSIX(/etc/passwd)". This dirty hack strips them to + * something sensible. @@@ We shouldn't modify a const string, though. + */ + if (strncmp(file, "*POSIX(", sizeof("*POSIX(") - 1) == 0) { + char *end; + + /* Skip the "*POSIX(" prefix */ + file += sizeof("*POSIX(") - 1; + end = &file[strlen(file) - 1]; + if (*end == ')') + *end = '\0'; + /* Optional: use the basename of the path only. */ + if ((end = strrchr(file, '/')) != NULL) + file = &end[1]; + } +#endif + es = ERR_get_state(); + + es->top = (es->top + 1) % ERR_NUM_ERRORS; + if (es->top == es->bottom) + es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS; + es->err_flags[es->top] = 0; + es->err_buffer[es->top] = ERR_PACK(lib, func, reason); + es->err_file[es->top] = file; + es->err_line[es->top] = line; + err_clear_data(es, es->top); +} + +void ERR_clear_error(void) +{ + int i; + ERR_STATE *es; + + es = ERR_get_state(); + + for (i = 0; i < ERR_NUM_ERRORS; i++) { + err_clear(es, i); + } + es->top = es->bottom = 0; +} + +unsigned long ERR_get_error(void) +{ + return (get_error_values(1, 0, NULL, NULL, NULL, NULL)); +} + +unsigned long ERR_get_error_line(const char **file, int *line) +{ + return (get_error_values(1, 0, file, line, NULL, NULL)); +} + +unsigned long ERR_get_error_line_data(const char **file, int *line, + const char **data, int *flags) +{ + return (get_error_values(1, 0, file, line, data, flags)); +} + +unsigned long ERR_peek_error(void) +{ + return (get_error_values(0, 0, NULL, NULL, NULL, NULL)); +} + +unsigned long ERR_peek_error_line(const char **file, int *line) +{ + return (get_error_values(0, 0, file, line, NULL, NULL)); +} + +unsigned long ERR_peek_error_line_data(const char **file, int *line, + const char **data, int *flags) +{ + return (get_error_values(0, 0, file, line, data, flags)); +} + +unsigned long ERR_peek_last_error(void) +{ + return (get_error_values(0, 1, NULL, NULL, NULL, NULL)); +} + +unsigned long ERR_peek_last_error_line(const char **file, int *line) +{ + return (get_error_values(0, 1, file, line, NULL, NULL)); +} + +unsigned long ERR_peek_last_error_line_data(const char **file, int *line, + const char **data, int *flags) +{ + return (get_error_values(0, 1, file, line, data, flags)); +} + +static unsigned long get_error_values(int inc, int top, const char **file, + int *line, const char **data, + int *flags) +{ + int i = 0; + ERR_STATE *es; + unsigned long ret; + + es = ERR_get_state(); + + if (inc && top) { + if (file) + *file = ""; + if (line) + *line = 0; + if (data) + *data = ""; + if (flags) + *flags = 0; + + return ERR_R_INTERNAL_ERROR; + } + + if (es->bottom == es->top) + return 0; + if (top) + i = es->top; /* last error */ + else + i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */ + + ret = es->err_buffer[i]; + if (inc) { + es->bottom = i; + es->err_buffer[i] = 0; + } + + if ((file != NULL) && (line != NULL)) { + if (es->err_file[i] == NULL) { + *file = "NA"; + if (line != NULL) + *line = 0; + } else { + *file = es->err_file[i]; + if (line != NULL) + *line = es->err_line[i]; + } + } + + if (data == NULL) { + if (inc) { + err_clear_data(es, i); + } + } else { + if (es->err_data[i] == NULL) { + *data = ""; + if (flags != NULL) + *flags = 0; + } else { + *data = es->err_data[i]; + if (flags != NULL) + *flags = es->err_data_flags[i]; + } + } + return ret; +} + +void ERR_error_string_n(unsigned long e, char *buf, size_t len) +{ + char lsbuf[64], fsbuf[64], rsbuf[64]; + const char *ls, *fs, *rs; + unsigned long l, f, r; + + if (len == 0) + return; + + l = ERR_GET_LIB(e); + f = ERR_GET_FUNC(e); + r = ERR_GET_REASON(e); + + ls = ERR_lib_error_string(e); + fs = ERR_func_error_string(e); + rs = ERR_reason_error_string(e); + + if (ls == NULL) + BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l); + if (fs == NULL) + BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f); + if (rs == NULL) + BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r); + + BIO_snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls ? ls : lsbuf, + fs ? fs : fsbuf, rs ? rs : rsbuf); + if (strlen(buf) == len - 1) { + /* + * output may be truncated; make sure we always have 5 + * colon-separated fields, i.e. 4 colons ... + */ +#define NUM_COLONS 4 + if (len > NUM_COLONS) { /* ... if possible */ + int i; + char *s = buf; + + for (i = 0; i < NUM_COLONS; i++) { + char *colon = strchr(s, ':'); + if (colon == NULL || colon > &buf[len - 1] - NUM_COLONS + i) { + /* + * set colon no. i at last possible position (buf[len-1] + * is the terminating 0) + */ + colon = &buf[len - 1] - NUM_COLONS + i; + *colon = ':'; + } + s = colon + 1; + } + } + } +} + +/* BAD for multi-threading: uses a local buffer if ret == NULL */ +/* + * ERR_error_string_n should be used instead for ret != NULL as + * ERR_error_string cannot know how large the buffer is + */ +char *ERR_error_string(unsigned long e, char *ret) +{ + static char buf[256]; + + if (ret == NULL) + ret = buf; + ERR_error_string_n(e, ret, 256); + + return ret; +} + +LHASH_OF(ERR_STRING_DATA) *ERR_get_string_table(void) +{ + err_fns_check(); + return ERRFN(err_get) (0); +} + +LHASH_OF(ERR_STATE) *ERR_get_err_state_table(void) +{ + err_fns_check(); + return ERRFN(thread_get) (0); +} + +void ERR_release_err_state_table(LHASH_OF(ERR_STATE) **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); +} + +void ERR_remove_thread_state(const CRYPTO_THREADID *id) +{ + ERR_STATE tmp; + + if (id) + CRYPTO_THREADID_cpy(&tmp.tid, id); + else + CRYPTO_THREADID_current(&tmp.tid); + err_fns_check(); + /* + * thread_del_item automatically destroys the LHASH if the number of + * items reaches zero. + */ + ERRFN(thread_del_item) (&tmp); +} + +#ifndef OPENSSL_NO_DEPRECATED +void ERR_remove_state(unsigned long pid) +{ + ERR_remove_thread_state(NULL); +} +#endif + +ERR_STATE *ERR_get_state(void) +{ + static ERR_STATE fallback; + ERR_STATE *ret, tmp, *tmpp = NULL; + int i; + CRYPTO_THREADID tid; + + err_fns_check(); + CRYPTO_THREADID_current(&tid); + CRYPTO_THREADID_cpy(&tmp.tid, &tid); + 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); + CRYPTO_THREADID_cpy(&ret->tid, &tid); + 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; +} + +int ERR_get_next_error_library(void) +{ + err_fns_check(); + return ERRFN(get_next_lib) (); +} + +void ERR_set_error_data(char *data, int flags) +{ + ERR_STATE *es; + int i; + + es = ERR_get_state(); + + i = es->top; + if (i == 0) + i = ERR_NUM_ERRORS - 1; + + err_clear_data(es, i); + es->err_data[i] = data; + es->err_data_flags[i] = flags; +} + +void ERR_add_error_data(int num, ...) +{ + va_list args; + va_start(args, num); + ERR_add_error_vdata(num, args); + va_end(args); +} + +void ERR_add_error_vdata(int num, va_list args) +{ + int i, n, s; + char *str, *p, *a; + + s = 80; + str = OPENSSL_malloc(s + 1); + if (str == NULL) + return; + str[0] = '\0'; + + n = 0; + for (i = 0; i < num; i++) { + a = va_arg(args, char *); + /* ignore NULLs, thanks to Bob Beck <beck@obtuse.com> */ + if (a != NULL) { + n += strlen(a); + if (n > s) { + s = n + 20; + p = OPENSSL_realloc(str, s + 1); + if (p == NULL) { + OPENSSL_free(str); + return; + } else + str = p; + } + BUF_strlcat(str, a, (size_t)s + 1); + } + } + ERR_set_error_data(str, ERR_TXT_MALLOCED | ERR_TXT_STRING); +} + +int ERR_set_mark(void) +{ + ERR_STATE *es; + + es = ERR_get_state(); + + if (es->bottom == es->top) + return 0; + es->err_flags[es->top] |= ERR_FLAG_MARK; + return 1; +} + +int ERR_pop_to_mark(void) +{ + ERR_STATE *es; + + es = ERR_get_state(); + + while (es->bottom != es->top + && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) { + err_clear(es, es->top); + es->top -= 1; + if (es->top == -1) + es->top = ERR_NUM_ERRORS - 1; + } + + if (es->bottom == es->top) + return 0; + es->err_flags[es->top] &= ~ERR_FLAG_MARK; + return 1; +} |