mirror of
https://github.com/openssl/openssl.git
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29f178bddf
The new client has become an independent libcrpyto module in crypto/http/ and * can handle any types of requests and responses (ASN.1-encoded and plain) * does not include potentially busy loops when waiting for responses but * makes use of a new timeout mechanism integrated with socket-based BIO * supports the use of HTTP proxies and TLS, including HTTPS over proxies * supports HTTP redirection via codes 301 and 302 for GET requests * returns more useful diagnostics in various error situations Also adapts - and strongly simplifies - hitherto uses of HTTP in crypto/ocsp/, crypto/x509/x_all.c, apps/lib/apps.c, and apps/{ocsp,s_client,s_server}.c Reviewed-by: Matt Caswell <matt@openssl.org> Reviewed-by: David von Oheimb <david.von.oheimb@siemens.com> (Merged from https://github.com/openssl/openssl/pull/10667)
964 lines
26 KiB
C
964 lines
26 KiB
C
/*
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* Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/* TODO: When ERR_STATE becomes opaque, this musts be removed */
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#define OSSL_FORCE_ERR_STATE
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#include <stdio.h>
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#include <stdarg.h>
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#include <string.h>
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#include "crypto/cryptlib.h"
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#include "internal/err.h"
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#include "crypto/err.h"
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#include <openssl/err.h>
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#include <openssl/crypto.h>
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#include <openssl/buffer.h>
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#include <openssl/bio.h>
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#include <openssl/opensslconf.h>
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#include "internal/thread_once.h"
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#include "crypto/ctype.h"
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#include "internal/constant_time.h"
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#include "e_os.h"
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#include "err_local.h"
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/* Forward declaration in case it's not published because of configuration */
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ERR_STATE *ERR_get_state(void);
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static int err_load_strings(const ERR_STRING_DATA *str);
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static void ERR_STATE_free(ERR_STATE *s);
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#ifndef OPENSSL_NO_ERR
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static ERR_STRING_DATA ERR_str_libraries[] = {
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{ERR_PACK(ERR_LIB_NONE, 0, 0), "unknown library"},
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{ERR_PACK(ERR_LIB_SYS, 0, 0), "system library"},
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{ERR_PACK(ERR_LIB_BN, 0, 0), "bignum routines"},
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{ERR_PACK(ERR_LIB_RSA, 0, 0), "rsa routines"},
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{ERR_PACK(ERR_LIB_DH, 0, 0), "Diffie-Hellman routines"},
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{ERR_PACK(ERR_LIB_EVP, 0, 0), "digital envelope routines"},
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{ERR_PACK(ERR_LIB_BUF, 0, 0), "memory buffer routines"},
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{ERR_PACK(ERR_LIB_OBJ, 0, 0), "object identifier routines"},
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{ERR_PACK(ERR_LIB_PEM, 0, 0), "PEM routines"},
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{ERR_PACK(ERR_LIB_DSA, 0, 0), "dsa routines"},
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{ERR_PACK(ERR_LIB_X509, 0, 0), "x509 certificate routines"},
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{ERR_PACK(ERR_LIB_ASN1, 0, 0), "asn1 encoding routines"},
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{ERR_PACK(ERR_LIB_CONF, 0, 0), "configuration file routines"},
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{ERR_PACK(ERR_LIB_CRYPTO, 0, 0), "common libcrypto routines"},
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{ERR_PACK(ERR_LIB_EC, 0, 0), "elliptic curve routines"},
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{ERR_PACK(ERR_LIB_ECDSA, 0, 0), "ECDSA routines"},
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{ERR_PACK(ERR_LIB_ECDH, 0, 0), "ECDH routines"},
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{ERR_PACK(ERR_LIB_SSL, 0, 0), "SSL routines"},
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{ERR_PACK(ERR_LIB_BIO, 0, 0), "BIO routines"},
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{ERR_PACK(ERR_LIB_PKCS7, 0, 0), "PKCS7 routines"},
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{ERR_PACK(ERR_LIB_X509V3, 0, 0), "X509 V3 routines"},
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{ERR_PACK(ERR_LIB_PKCS12, 0, 0), "PKCS12 routines"},
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{ERR_PACK(ERR_LIB_RAND, 0, 0), "random number generator"},
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{ERR_PACK(ERR_LIB_DSO, 0, 0), "DSO support routines"},
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{ERR_PACK(ERR_LIB_TS, 0, 0), "time stamp routines"},
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{ERR_PACK(ERR_LIB_ENGINE, 0, 0), "engine routines"},
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{ERR_PACK(ERR_LIB_OCSP, 0, 0), "OCSP routines"},
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{ERR_PACK(ERR_LIB_UI, 0, 0), "UI routines"},
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{ERR_PACK(ERR_LIB_FIPS, 0, 0), "FIPS routines"},
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{ERR_PACK(ERR_LIB_CMS, 0, 0), "CMS routines"},
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{ERR_PACK(ERR_LIB_CRMF, 0, 0), "CRMF routines"},
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{ERR_PACK(ERR_LIB_CMP, 0, 0), "CMP routines"},
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{ERR_PACK(ERR_LIB_HMAC, 0, 0), "HMAC routines"},
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{ERR_PACK(ERR_LIB_CT, 0, 0), "CT routines"},
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{ERR_PACK(ERR_LIB_ASYNC, 0, 0), "ASYNC routines"},
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{ERR_PACK(ERR_LIB_KDF, 0, 0), "KDF routines"},
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{ERR_PACK(ERR_LIB_OSSL_STORE, 0, 0), "STORE routines"},
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{ERR_PACK(ERR_LIB_SM2, 0, 0), "SM2 routines"},
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{ERR_PACK(ERR_LIB_ESS, 0, 0), "ESS routines"},
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{ERR_PACK(ERR_LIB_PROV, 0, 0), "Provider routines"},
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{ERR_PACK(ERR_LIB_OSSL_SERIALIZER, 0, 0), "SERIALIZER routines"},
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{ERR_PACK(ERR_LIB_HTTP, 0, 0), "HTTP routines"},
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{0, NULL},
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};
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static ERR_STRING_DATA ERR_str_reasons[] = {
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{ERR_R_SYS_LIB, "system lib"},
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{ERR_R_BN_LIB, "BN lib"},
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{ERR_R_RSA_LIB, "RSA lib"},
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{ERR_R_DH_LIB, "DH lib"},
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{ERR_R_EVP_LIB, "EVP lib"},
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{ERR_R_BUF_LIB, "BUF lib"},
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{ERR_R_OBJ_LIB, "OBJ lib"},
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{ERR_R_PEM_LIB, "PEM lib"},
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{ERR_R_DSA_LIB, "DSA lib"},
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{ERR_R_X509_LIB, "X509 lib"},
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{ERR_R_ASN1_LIB, "ASN1 lib"},
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{ERR_R_EC_LIB, "EC lib"},
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{ERR_R_BIO_LIB, "BIO lib"},
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{ERR_R_PKCS7_LIB, "PKCS7 lib"},
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{ERR_R_X509V3_LIB, "X509V3 lib"},
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{ERR_R_ENGINE_LIB, "ENGINE lib"},
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{ERR_R_UI_LIB, "UI lib"},
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{ERR_R_OSSL_STORE_LIB, "STORE lib"},
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{ERR_R_ECDSA_LIB, "ECDSA lib"},
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{ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"},
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{ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"},
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{ERR_R_FATAL, "fatal"},
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{ERR_R_MALLOC_FAILURE, "malloc failure"},
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{ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED,
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"called a function you should not call"},
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{ERR_R_PASSED_NULL_PARAMETER, "passed a null parameter"},
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{ERR_R_INTERNAL_ERROR, "internal error"},
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{ERR_R_DISABLED, "called a function that was disabled at compile-time"},
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{ERR_R_INIT_FAIL, "init fail"},
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{ERR_R_OPERATION_FAIL, "operation fail"},
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{ERR_R_INVALID_PROVIDER_FUNCTIONS, "invalid provider functions"},
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{ERR_R_INTERRUPTED_OR_CANCELLED, "interrupted or cancelled"},
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{0, NULL},
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};
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#endif
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static CRYPTO_ONCE err_init = CRYPTO_ONCE_STATIC_INIT;
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static int set_err_thread_local;
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static CRYPTO_THREAD_LOCAL err_thread_local;
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static CRYPTO_ONCE err_string_init = CRYPTO_ONCE_STATIC_INIT;
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static CRYPTO_RWLOCK *err_string_lock;
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static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *);
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/*
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* The internal state
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*/
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static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL;
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static int int_err_library_number = ERR_LIB_USER;
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typedef enum ERR_GET_ACTION_e {
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EV_POP, EV_PEEK, EV_PEEK_LAST
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} ERR_GET_ACTION;
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static unsigned long get_error_values(ERR_GET_ACTION g,
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const char **file, int *line,
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const char **func, const char **data,
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int *flags);
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static unsigned long err_string_data_hash(const ERR_STRING_DATA *a)
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{
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unsigned long ret, l;
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l = a->error;
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ret = l ^ ERR_GET_LIB(l);
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return (ret ^ ret % 19 * 13);
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}
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static int err_string_data_cmp(const ERR_STRING_DATA *a,
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const ERR_STRING_DATA *b)
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{
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if (a->error == b->error)
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return 0;
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return a->error > b->error ? 1 : -1;
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}
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static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d)
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{
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ERR_STRING_DATA *p = NULL;
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CRYPTO_THREAD_read_lock(err_string_lock);
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p = lh_ERR_STRING_DATA_retrieve(int_error_hash, d);
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CRYPTO_THREAD_unlock(err_string_lock);
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return p;
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}
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#ifndef OPENSSL_NO_ERR
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/* 2019-05-21: Russian and Ukrainian locales on Linux require more than 6,5 kB */
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# define SPACE_SYS_STR_REASONS 8 * 1024
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# define NUM_SYS_STR_REASONS 127
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static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1];
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/*
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* SYS_str_reasons is filled with copies of strerror() results at
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* initialization. 'errno' values up to 127 should cover all usual errors,
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* others will be displayed numerically by ERR_error_string. It is crucial
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* that we have something for each reason code that occurs in
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* ERR_str_reasons, or bogus reason strings will be returned for SYSerr(),
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* which always gets an errno value and never one of those 'standard' reason
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* codes.
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*/
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static void build_SYS_str_reasons(void)
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{
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/* OPENSSL_malloc cannot be used here, use static storage instead */
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static char strerror_pool[SPACE_SYS_STR_REASONS];
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char *cur = strerror_pool;
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size_t cnt = 0;
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static int init = 1;
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int i;
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int saveerrno = get_last_sys_error();
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CRYPTO_THREAD_write_lock(err_string_lock);
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if (!init) {
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CRYPTO_THREAD_unlock(err_string_lock);
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return;
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}
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for (i = 1; i <= NUM_SYS_STR_REASONS; i++) {
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ERR_STRING_DATA *str = &SYS_str_reasons[i - 1];
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str->error = ERR_PACK(ERR_LIB_SYS, 0, i);
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/*
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* If we have used up all the space in strerror_pool,
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* there's no point in calling openssl_strerror_r()
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*/
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if (str->string == NULL && cnt < sizeof(strerror_pool)) {
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if (openssl_strerror_r(i, cur, sizeof(strerror_pool) - cnt)) {
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size_t l = strlen(cur);
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str->string = cur;
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cnt += l;
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cur += l;
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/*
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* VMS has an unusual quirk of adding spaces at the end of
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* some (most? all?) messages. Lets trim them off.
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*/
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while (cur > strerror_pool && ossl_isspace(cur[-1])) {
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cur--;
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cnt--;
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}
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*cur++ = '\0';
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cnt++;
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}
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}
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if (str->string == NULL)
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str->string = "unknown";
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}
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/*
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* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, as
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* required by ERR_load_strings.
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*/
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init = 0;
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CRYPTO_THREAD_unlock(err_string_lock);
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/* openssl_strerror_r could change errno, but we want to preserve it */
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set_sys_error(saveerrno);
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err_load_strings(SYS_str_reasons);
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}
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#endif
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static void ERR_STATE_free(ERR_STATE *s)
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{
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int i;
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if (s == NULL)
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return;
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for (i = 0; i < ERR_NUM_ERRORS; i++) {
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err_clear_data(s, i, 1);
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}
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OPENSSL_free(s);
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}
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DEFINE_RUN_ONCE_STATIC(do_err_strings_init)
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{
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if (!OPENSSL_init_crypto(0, NULL))
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return 0;
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err_string_lock = CRYPTO_THREAD_lock_new();
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if (err_string_lock == NULL)
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return 0;
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int_error_hash = lh_ERR_STRING_DATA_new(err_string_data_hash,
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err_string_data_cmp);
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if (int_error_hash == NULL) {
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CRYPTO_THREAD_lock_free(err_string_lock);
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err_string_lock = NULL;
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return 0;
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}
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return 1;
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}
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void err_cleanup(void)
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{
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if (set_err_thread_local != 0)
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CRYPTO_THREAD_cleanup_local(&err_thread_local);
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CRYPTO_THREAD_lock_free(err_string_lock);
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err_string_lock = NULL;
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lh_ERR_STRING_DATA_free(int_error_hash);
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int_error_hash = NULL;
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}
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/*
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* Legacy; pack in the library.
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*/
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static void err_patch(int lib, ERR_STRING_DATA *str)
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{
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unsigned long plib = ERR_PACK(lib, 0, 0);
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for (; str->error != 0; str++)
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str->error |= plib;
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}
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/*
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* Hash in |str| error strings. Assumes the URN_ONCE was done.
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*/
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static int err_load_strings(const ERR_STRING_DATA *str)
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{
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CRYPTO_THREAD_write_lock(err_string_lock);
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for (; str->error; str++)
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(void)lh_ERR_STRING_DATA_insert(int_error_hash,
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(ERR_STRING_DATA *)str);
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CRYPTO_THREAD_unlock(err_string_lock);
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return 1;
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}
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int ERR_load_ERR_strings(void)
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{
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#ifndef OPENSSL_NO_ERR
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if (!RUN_ONCE(&err_string_init, do_err_strings_init))
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return 0;
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err_load_strings(ERR_str_libraries);
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err_load_strings(ERR_str_reasons);
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build_SYS_str_reasons();
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#endif
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return 1;
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}
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int ERR_load_strings(int lib, ERR_STRING_DATA *str)
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{
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if (ERR_load_ERR_strings() == 0)
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return 0;
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err_patch(lib, str);
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err_load_strings(str);
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return 1;
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}
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int ERR_load_strings_const(const ERR_STRING_DATA *str)
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{
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if (ERR_load_ERR_strings() == 0)
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return 0;
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err_load_strings(str);
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return 1;
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}
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int ERR_unload_strings(int lib, ERR_STRING_DATA *str)
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{
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if (!RUN_ONCE(&err_string_init, do_err_strings_init))
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return 0;
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CRYPTO_THREAD_write_lock(err_string_lock);
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/*
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* We don't need to ERR_PACK the lib, since that was done (to
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* the table) when it was loaded.
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*/
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for (; str->error; str++)
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(void)lh_ERR_STRING_DATA_delete(int_error_hash, str);
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CRYPTO_THREAD_unlock(err_string_lock);
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return 1;
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}
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void err_free_strings_int(void)
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{
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if (!RUN_ONCE(&err_string_init, do_err_strings_init))
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return;
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}
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/********************************************************/
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void ERR_clear_error(void)
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{
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int i;
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ERR_STATE *es;
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es = err_get_state_int();
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if (es == NULL)
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return;
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for (i = 0; i < ERR_NUM_ERRORS; i++) {
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err_clear(es, i, 0);
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}
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es->top = es->bottom = 0;
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}
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unsigned long ERR_get_error(void)
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{
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return get_error_values(EV_POP, NULL, NULL, NULL, NULL, NULL);
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}
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unsigned long ERR_get_error_line(const char **file, int *line)
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{
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return get_error_values(EV_POP, file, line, NULL, NULL, NULL);
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}
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unsigned long ERR_get_error_func(const char **func)
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{
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return get_error_values(EV_POP, NULL, NULL, func, NULL, NULL);
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}
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unsigned long ERR_get_error_data(const char **data, int *flags)
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{
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return get_error_values(EV_POP, NULL, NULL, NULL, data, flags);
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}
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unsigned long ERR_get_error_all(const char **file, int *line,
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const char **func,
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const char **data, int *flags)
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{
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return get_error_values(EV_POP, file, line, func, data, flags);
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}
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#ifndef OPENSSL_NO_DEPRECATED_3_0
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unsigned long ERR_get_error_line_data(const char **file, int *line,
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const char **data, int *flags)
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{
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return get_error_values(EV_POP, file, line, NULL, data, flags);
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}
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#endif
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unsigned long ERR_peek_error(void)
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{
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return get_error_values(EV_PEEK, NULL, NULL, NULL, NULL, NULL);
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}
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unsigned long ERR_peek_error_line(const char **file, int *line)
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{
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return get_error_values(EV_PEEK, file, line, NULL, NULL, NULL);
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}
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unsigned long ERR_peek_error_func(const char **func)
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{
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return get_error_values(EV_PEEK, NULL, NULL, func, NULL, NULL);
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}
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unsigned long ERR_peek_error_data(const char **data, int *flags)
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{
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return get_error_values(EV_PEEK, NULL, NULL, NULL, data, flags);
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}
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unsigned long ERR_peek_error_all(const char **file, int *line,
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const char **func,
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const char **data, int *flags)
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{
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return get_error_values(EV_PEEK, file, line, func, data, flags);
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}
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#ifndef OPENSSL_NO_DEPRECATED_3_0
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unsigned long ERR_peek_error_line_data(const char **file, int *line,
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const char **data, int *flags)
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{
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return get_error_values(EV_PEEK, file, line, NULL, data, flags);
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}
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#endif
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unsigned long ERR_peek_last_error(void)
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{
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return get_error_values(EV_PEEK_LAST, NULL, NULL, NULL, NULL, NULL);
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}
|
|
|
|
unsigned long ERR_peek_last_error_line(const char **file, int *line)
|
|
{
|
|
return get_error_values(EV_PEEK_LAST, file, line, NULL, NULL, NULL);
|
|
}
|
|
|
|
unsigned long ERR_peek_last_error_func(const char **func)
|
|
{
|
|
return get_error_values(EV_PEEK_LAST, NULL, NULL, func, NULL, NULL);
|
|
}
|
|
|
|
unsigned long ERR_peek_last_error_data(const char **data, int *flags)
|
|
{
|
|
return get_error_values(EV_PEEK_LAST, NULL, NULL, NULL, data, flags);
|
|
}
|
|
|
|
unsigned long ERR_peek_last_error_all(const char **file, int *line,
|
|
const char **func,
|
|
const char **data, int *flags)
|
|
{
|
|
return get_error_values(EV_PEEK_LAST, file, line, func, data, flags);
|
|
}
|
|
|
|
#ifndef OPENSSL_NO_DEPRECATED_3_0
|
|
unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
|
|
const char **data, int *flags)
|
|
{
|
|
return get_error_values(EV_PEEK_LAST, file, line, NULL, data, flags);
|
|
}
|
|
#endif
|
|
|
|
static unsigned long get_error_values(ERR_GET_ACTION g,
|
|
const char **file, int *line,
|
|
const char **func,
|
|
const char **data, int *flags)
|
|
{
|
|
int i = 0;
|
|
ERR_STATE *es;
|
|
unsigned long ret;
|
|
|
|
es = err_get_state_int();
|
|
if (es == NULL)
|
|
return 0;
|
|
|
|
/*
|
|
* Clear anything that should have been cleared earlier. We do this
|
|
* here because this doesn't have constant-time issues.
|
|
*/
|
|
while (es->bottom != es->top) {
|
|
if (es->err_flags[es->top] & ERR_FLAG_CLEAR) {
|
|
err_clear(es, es->top, 0);
|
|
es->top = es->top > 0 ? es->top - 1 : ERR_NUM_ERRORS - 1;
|
|
continue;
|
|
}
|
|
i = (es->bottom + 1) % ERR_NUM_ERRORS;
|
|
if (es->err_flags[i] & ERR_FLAG_CLEAR) {
|
|
es->bottom = i;
|
|
err_clear(es, es->bottom, 0);
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* If everything has been cleared, the stack is empty. */
|
|
if (es->bottom == es->top)
|
|
return 0;
|
|
|
|
/* Which error, the top of stack (latest one) or the first one? */
|
|
if (g == EV_PEEK_LAST)
|
|
i = es->top;
|
|
else
|
|
i = (es->bottom + 1) % ERR_NUM_ERRORS;
|
|
|
|
ret = es->err_buffer[i];
|
|
if (g == EV_POP) {
|
|
es->bottom = i;
|
|
es->err_buffer[i] = 0;
|
|
}
|
|
|
|
if (file != NULL) {
|
|
*file = es->err_file[i];
|
|
if (*file == NULL)
|
|
*file = "";
|
|
}
|
|
if (line != NULL)
|
|
*line = es->err_line[i];
|
|
if (func != NULL) {
|
|
*func = es->err_func[i];
|
|
if (*func == NULL)
|
|
*func = "";
|
|
}
|
|
if (flags != NULL)
|
|
*flags = es->err_data_flags[i];
|
|
if (data == NULL) {
|
|
if (g == EV_POP) {
|
|
err_clear_data(es, i, 0);
|
|
}
|
|
} else {
|
|
*data = es->err_data[i];
|
|
if (*data == NULL) {
|
|
*data = "";
|
|
if (flags != NULL)
|
|
*flags = 0;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
void ERR_error_string_n(unsigned long e, char *buf, size_t len)
|
|
{
|
|
char lsbuf[64], rsbuf[64];
|
|
const char *ls, *rs;
|
|
unsigned long f = 0, l, r;
|
|
|
|
if (len == 0)
|
|
return;
|
|
|
|
l = ERR_GET_LIB(e);
|
|
ls = ERR_lib_error_string(e);
|
|
if (ls == NULL) {
|
|
BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l);
|
|
ls = lsbuf;
|
|
}
|
|
|
|
rs = ERR_reason_error_string(e);
|
|
r = ERR_GET_REASON(e);
|
|
if (rs == NULL) {
|
|
BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r);
|
|
rs = rsbuf;
|
|
}
|
|
|
|
BIO_snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls, "", rs);
|
|
if (strlen(buf) == len - 1) {
|
|
/* Didn't fit; use a minimal format. */
|
|
BIO_snprintf(buf, len, "err:%lx:%lx:%lx:%lx", e, l, f, r);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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, (int)sizeof(buf));
|
|
return ret;
|
|
}
|
|
|
|
const char *ERR_lib_error_string(unsigned long e)
|
|
{
|
|
ERR_STRING_DATA d, *p;
|
|
unsigned long l;
|
|
|
|
if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
|
|
return NULL;
|
|
}
|
|
|
|
l = ERR_GET_LIB(e);
|
|
d.error = ERR_PACK(l, 0, 0);
|
|
p = int_err_get_item(&d);
|
|
return ((p == NULL) ? NULL : p->string);
|
|
}
|
|
|
|
#ifndef OPENSSL_NO_DEPRECATED_3_0
|
|
const char *ERR_func_error_string(unsigned long e)
|
|
{
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
const char *ERR_reason_error_string(unsigned long e)
|
|
{
|
|
ERR_STRING_DATA d, *p = NULL;
|
|
unsigned long l, r;
|
|
|
|
if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
|
|
return NULL;
|
|
}
|
|
|
|
l = ERR_GET_LIB(e);
|
|
r = ERR_GET_REASON(e);
|
|
d.error = ERR_PACK(l, 0, r);
|
|
p = int_err_get_item(&d);
|
|
if (p == NULL) {
|
|
d.error = ERR_PACK(0, 0, r);
|
|
p = int_err_get_item(&d);
|
|
}
|
|
return ((p == NULL) ? NULL : p->string);
|
|
}
|
|
|
|
/* TODO(3.0): arg ignored for now */
|
|
static void err_delete_thread_state(void *arg)
|
|
{
|
|
ERR_STATE *state = CRYPTO_THREAD_get_local(&err_thread_local);
|
|
if (state == NULL)
|
|
return;
|
|
|
|
CRYPTO_THREAD_set_local(&err_thread_local, NULL);
|
|
ERR_STATE_free(state);
|
|
}
|
|
|
|
#ifndef OPENSSL_NO_DEPRECATED_1_1_0
|
|
void ERR_remove_thread_state(void *dummy)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#ifndef OPENSSL_NO_DEPRECATED_1_0_0
|
|
void ERR_remove_state(unsigned long pid)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
DEFINE_RUN_ONCE_STATIC(err_do_init)
|
|
{
|
|
set_err_thread_local = 1;
|
|
return CRYPTO_THREAD_init_local(&err_thread_local, NULL);
|
|
}
|
|
|
|
ERR_STATE *err_get_state_int(void)
|
|
{
|
|
ERR_STATE *state;
|
|
int saveerrno = get_last_sys_error();
|
|
|
|
if (!OPENSSL_init_crypto(OPENSSL_INIT_BASE_ONLY, NULL))
|
|
return NULL;
|
|
|
|
if (!RUN_ONCE(&err_init, err_do_init))
|
|
return NULL;
|
|
|
|
state = CRYPTO_THREAD_get_local(&err_thread_local);
|
|
if (state == (ERR_STATE*)-1)
|
|
return NULL;
|
|
|
|
if (state == NULL) {
|
|
if (!CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)-1))
|
|
return NULL;
|
|
|
|
if ((state = OPENSSL_zalloc(sizeof(*state))) == NULL) {
|
|
CRYPTO_THREAD_set_local(&err_thread_local, NULL);
|
|
return NULL;
|
|
}
|
|
|
|
if (!ossl_init_thread_start(NULL, NULL, err_delete_thread_state)
|
|
|| !CRYPTO_THREAD_set_local(&err_thread_local, state)) {
|
|
ERR_STATE_free(state);
|
|
CRYPTO_THREAD_set_local(&err_thread_local, NULL);
|
|
return NULL;
|
|
}
|
|
|
|
/* Ignore failures from these */
|
|
OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
|
|
}
|
|
|
|
set_sys_error(saveerrno);
|
|
return state;
|
|
}
|
|
|
|
#ifndef OPENSSL_NO_DEPRECATED_3_0
|
|
ERR_STATE *ERR_get_state(void)
|
|
{
|
|
return err_get_state_int();
|
|
}
|
|
#endif
|
|
|
|
|
|
/*
|
|
* err_shelve_state returns the current thread local error state
|
|
* and freezes the error module until err_unshelve_state is called.
|
|
*/
|
|
int err_shelve_state(void **state)
|
|
{
|
|
int saveerrno = get_last_sys_error();
|
|
|
|
/*
|
|
* Note, at present our only caller is OPENSSL_init_crypto(), indirectly
|
|
* via ossl_init_load_crypto_nodelete(), by which point the requested
|
|
* "base" initialization has already been performed, so the below call is a
|
|
* NOOP, that re-enters OPENSSL_init_crypto() only to quickly return.
|
|
*
|
|
* If are no other valid callers of this function, the call below can be
|
|
* removed, avoiding the re-entry into OPENSSL_init_crypto(). If there are
|
|
* potential uses that are not from inside OPENSSL_init_crypto(), then this
|
|
* call is needed, but some care is required to make sure that the re-entry
|
|
* remains a NOOP.
|
|
*/
|
|
if (!OPENSSL_init_crypto(OPENSSL_INIT_BASE_ONLY, NULL))
|
|
return 0;
|
|
|
|
if (!RUN_ONCE(&err_init, err_do_init))
|
|
return 0;
|
|
|
|
*state = CRYPTO_THREAD_get_local(&err_thread_local);
|
|
if (!CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)-1))
|
|
return 0;
|
|
|
|
set_sys_error(saveerrno);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* err_unshelve_state restores the error state that was returned
|
|
* by err_shelve_state previously.
|
|
*/
|
|
void err_unshelve_state(void* state)
|
|
{
|
|
if (state != (void*)-1)
|
|
CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)state);
|
|
}
|
|
|
|
int ERR_get_next_error_library(void)
|
|
{
|
|
int ret;
|
|
|
|
if (!RUN_ONCE(&err_string_init, do_err_strings_init))
|
|
return 0;
|
|
|
|
CRYPTO_THREAD_write_lock(err_string_lock);
|
|
ret = int_err_library_number++;
|
|
CRYPTO_THREAD_unlock(err_string_lock);
|
|
return ret;
|
|
}
|
|
|
|
static int err_set_error_data_int(char *data, size_t size, int flags,
|
|
int deallocate)
|
|
{
|
|
ERR_STATE *es;
|
|
|
|
es = err_get_state_int();
|
|
if (es == NULL)
|
|
return 0;
|
|
|
|
err_clear_data(es, es->top, deallocate);
|
|
err_set_data(es, es->top, data, size, flags);
|
|
|
|
return 1;
|
|
}
|
|
|
|
void ERR_set_error_data(char *data, int flags)
|
|
{
|
|
/*
|
|
* This function is void so we cannot propagate the error return. Since it
|
|
* is also in the public API we can't change the return type.
|
|
*
|
|
* We estimate the size of the data. If it's not flagged as allocated,
|
|
* then this is safe, and if it is flagged as allocated, then our size
|
|
* may be smaller than the actual allocation, but that doesn't matter
|
|
* too much, the buffer will remain untouched or will eventually be
|
|
* reallocated to a new size.
|
|
*
|
|
* callers should be advised that this function takes over ownership of
|
|
* the allocated memory, i.e. they can't count on the pointer to remain
|
|
* valid.
|
|
*/
|
|
err_set_error_data_int(data, strlen(data) + 1, flags, 1);
|
|
}
|
|
|
|
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, len, size;
|
|
int flags = ERR_TXT_MALLOCED | ERR_TXT_STRING;
|
|
char *str, *arg;
|
|
ERR_STATE *es;
|
|
|
|
/* Get the current error data; if an allocated string get it. */
|
|
es = err_get_state_int();
|
|
if (es == NULL)
|
|
return;
|
|
i = es->top;
|
|
|
|
/*
|
|
* If err_data is allocated already, re-use the space.
|
|
* Otherwise, allocate a small new buffer.
|
|
*/
|
|
if ((es->err_data_flags[i] & flags) == flags) {
|
|
str = es->err_data[i];
|
|
size = es->err_data_size[i];
|
|
|
|
/*
|
|
* To protect the string we just grabbed from tampering by other
|
|
* functions we may call, or to protect them from freeing a pointer
|
|
* that may no longer be valid at that point, we clear away the
|
|
* data pointer and the flags. We will set them again at the end
|
|
* of this function.
|
|
*/
|
|
es->err_data[i] = NULL;
|
|
es->err_data_flags[i] = 0;
|
|
} else if ((str = OPENSSL_malloc(size = 81)) == NULL) {
|
|
return;
|
|
} else {
|
|
str[0] = '\0';
|
|
}
|
|
len = strlen(str);
|
|
|
|
while (--num >= 0) {
|
|
arg = va_arg(args, char *);
|
|
if (arg == NULL)
|
|
arg = "<NULL>";
|
|
len += strlen(arg);
|
|
if (len >= size) {
|
|
char *p;
|
|
|
|
size = len + 20;
|
|
p = OPENSSL_realloc(str, size);
|
|
if (p == NULL) {
|
|
OPENSSL_free(str);
|
|
return;
|
|
}
|
|
str = p;
|
|
}
|
|
OPENSSL_strlcat(str, arg, (size_t)size);
|
|
}
|
|
if (!err_set_error_data_int(str, size, flags, 0))
|
|
OPENSSL_free(str);
|
|
}
|
|
|
|
int ERR_set_mark(void)
|
|
{
|
|
ERR_STATE *es;
|
|
|
|
es = err_get_state_int();
|
|
if (es == NULL)
|
|
return 0;
|
|
|
|
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_int();
|
|
if (es == NULL)
|
|
return 0;
|
|
|
|
while (es->bottom != es->top
|
|
&& (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) {
|
|
err_clear(es, es->top, 0);
|
|
es->top = es->top > 0 ? es->top - 1 : ERR_NUM_ERRORS - 1;
|
|
}
|
|
|
|
if (es->bottom == es->top)
|
|
return 0;
|
|
es->err_flags[es->top] &= ~ERR_FLAG_MARK;
|
|
return 1;
|
|
}
|
|
|
|
int ERR_clear_last_mark(void)
|
|
{
|
|
ERR_STATE *es;
|
|
int top;
|
|
|
|
es = err_get_state_int();
|
|
if (es == NULL)
|
|
return 0;
|
|
|
|
top = es->top;
|
|
while (es->bottom != top
|
|
&& (es->err_flags[top] & ERR_FLAG_MARK) == 0) {
|
|
top = top > 0 ? top - 1 : ERR_NUM_ERRORS - 1;
|
|
}
|
|
|
|
if (es->bottom == top)
|
|
return 0;
|
|
es->err_flags[top] &= ~ERR_FLAG_MARK;
|
|
return 1;
|
|
}
|
|
|
|
void err_clear_last_constant_time(int clear)
|
|
{
|
|
ERR_STATE *es;
|
|
int top;
|
|
|
|
es = err_get_state_int();
|
|
if (es == NULL)
|
|
return;
|
|
|
|
top = es->top;
|
|
|
|
/*
|
|
* Flag error as cleared but remove it elsewhere to avoid two errors
|
|
* accessing the same error stack location, revealing timing information.
|
|
*/
|
|
clear = constant_time_select_int(constant_time_eq_int(clear, 0),
|
|
0, ERR_FLAG_CLEAR);
|
|
es->err_flags[top] |= clear;
|
|
}
|