| /* |
| * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved. |
| * |
| * Licensed under the OpenSSL license (the "License"). You may not use |
| * this file except in compliance with the License. You can obtain a copy |
| * in the file LICENSE in the source distribution or at |
| * https://www.openssl.org/source/license.html |
| */ |
| |
| #include <stdio.h> |
| #include <stdarg.h> |
| #include <string.h> |
| #include "crypto/cryptlib.h" |
| #include "internal/err.h" |
| #include "crypto/err.h" |
| #include <openssl/err.h> |
| #include <openssl/crypto.h> |
| #include <openssl/buffer.h> |
| #include <openssl/bio.h> |
| #include <openssl/opensslconf.h> |
| #include "internal/thread_once.h" |
| #include "crypto/ctype.h" |
| #include "internal/constant_time.h" |
| #include "e_os.h" |
| |
| #ifndef OPENSSL_NO_ERR |
| static int err_load_strings(const ERR_STRING_DATA *str); |
| #endif |
| |
| 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_ECDSA, 0, 0), "ECDSA routines"}, |
| {ERR_PACK(ERR_LIB_ECDH, 0, 0), "ECDH 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_UI, 0, 0), "UI 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"}, |
| {ERR_PACK(ERR_LIB_CT, 0, 0), "CT routines"}, |
| {ERR_PACK(ERR_LIB_ASYNC, 0, 0), "ASYNC routines"}, |
| {ERR_PACK(ERR_LIB_KDF, 0, 0), "KDF routines"}, |
| {ERR_PACK(ERR_LIB_OSSL_STORE, 0, 0), "STORE routines"}, |
| {ERR_PACK(ERR_LIB_SM2, 0, 0), "SM2 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"}, |
| {ERR_PACK(0, SYS_F_GETADDRINFO, 0), "getaddrinfo"}, |
| {ERR_PACK(0, SYS_F_GETNAMEINFO, 0), "getnameinfo"}, |
| {ERR_PACK(0, SYS_F_SETSOCKOPT, 0), "setsockopt"}, |
| {ERR_PACK(0, SYS_F_GETSOCKOPT, 0), "getsockopt"}, |
| {ERR_PACK(0, SYS_F_GETSOCKNAME, 0), "getsockname"}, |
| {ERR_PACK(0, SYS_F_GETHOSTBYNAME, 0), "gethostbyname"}, |
| {ERR_PACK(0, SYS_F_FFLUSH, 0), "fflush"}, |
| {ERR_PACK(0, SYS_F_OPEN, 0), "open"}, |
| {ERR_PACK(0, SYS_F_CLOSE, 0), "close"}, |
| {ERR_PACK(0, SYS_F_IOCTL, 0), "ioctl"}, |
| {ERR_PACK(0, SYS_F_STAT, 0), "stat"}, |
| {ERR_PACK(0, SYS_F_FCNTL, 0), "fcntl"}, |
| {ERR_PACK(0, SYS_F_FSTAT, 0), "fstat"}, |
| {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_EC_LIB, "EC lib"}, |
| {ERR_R_BIO_LIB, "BIO lib"}, |
| {ERR_R_PKCS7_LIB, "PKCS7 lib"}, |
| {ERR_R_X509V3_LIB, "X509V3 lib"}, |
| {ERR_R_ENGINE_LIB, "ENGINE lib"}, |
| {ERR_R_UI_LIB, "UI lib"}, |
| {ERR_R_OSSL_STORE_LIB, "STORE lib"}, |
| {ERR_R_ECDSA_LIB, "ECDSA lib"}, |
| |
| {ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"}, |
| {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"}, |
| {ERR_R_INIT_FAIL, "init fail"}, |
| {ERR_R_PASSED_INVALID_ARGUMENT, "passed invalid argument"}, |
| {ERR_R_OPERATION_FAIL, "operation fail"}, |
| |
| {0, NULL}, |
| }; |
| #endif |
| |
| static CRYPTO_ONCE err_init = CRYPTO_ONCE_STATIC_INIT; |
| static int set_err_thread_local; |
| static CRYPTO_THREAD_LOCAL err_thread_local; |
| |
| static CRYPTO_ONCE err_string_init = CRYPTO_ONCE_STATIC_INIT; |
| static CRYPTO_RWLOCK *err_string_lock = NULL; |
| |
| #ifndef OPENSSL_NO_ERR |
| static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); |
| #endif |
| |
| /* |
| * The internal state |
| */ |
| |
| #ifndef OPENSSL_NO_ERR |
| static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL; |
| #endif |
| static int int_err_library_number = ERR_LIB_USER; |
| |
| static unsigned long get_error_values(int inc, int top, const char **file, |
| int *line, const char **data, |
| int *flags); |
| |
| #ifndef OPENSSL_NO_ERR |
| 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 int err_string_data_cmp(const ERR_STRING_DATA *a, |
| const ERR_STRING_DATA *b) |
| { |
| if (a->error == b->error) |
| return 0; |
| return a->error > b->error ? 1 : -1; |
| } |
| |
| static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d) |
| { |
| ERR_STRING_DATA *p = NULL; |
| |
| CRYPTO_THREAD_read_lock(err_string_lock); |
| p = lh_ERR_STRING_DATA_retrieve(int_error_hash, d); |
| CRYPTO_THREAD_unlock(err_string_lock); |
| |
| return p; |
| } |
| |
| /* 2019-05-21: Russian and Ukrainian locales on Linux require more than 6,5 kB */ |
| # define SPACE_SYS_STR_REASONS 8 * 1024 |
| # define NUM_SYS_STR_REASONS 127 |
| |
| 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_pool[SPACE_SYS_STR_REASONS]; |
| char *cur = strerror_pool; |
| size_t cnt = 0; |
| static int init = 1; |
| int i; |
| int saveerrno = get_last_sys_error(); |
| |
| CRYPTO_THREAD_write_lock(err_string_lock); |
| if (!init) { |
| CRYPTO_THREAD_unlock(err_string_lock); |
| return; |
| } |
| |
| for (i = 1; i <= NUM_SYS_STR_REASONS; i++) { |
| ERR_STRING_DATA *str = &SYS_str_reasons[i - 1]; |
| |
| str->error = ERR_PACK(ERR_LIB_SYS, 0, i); |
| /* |
| * If we have used up all the space in strerror_pool, |
| * there's no point in calling openssl_strerror_r() |
| */ |
| if (str->string == NULL && cnt < sizeof(strerror_pool)) { |
| if (openssl_strerror_r(i, cur, sizeof(strerror_pool) - cnt)) { |
| size_t l = strlen(cur); |
| |
| str->string = cur; |
| cnt += l; |
| cur += l; |
| |
| /* |
| * VMS has an unusual quirk of adding spaces at the end of |
| * some (most? all?) messages. Lets trim them off. |
| */ |
| while (cur > strerror_pool && ossl_isspace(cur[-1])) { |
| cur--; |
| cnt--; |
| } |
| *cur++ = '\0'; |
| cnt++; |
| } |
| } |
| 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_THREAD_unlock(err_string_lock); |
| /* openssl_strerror_r could change errno, but we want to preserve it */ |
| set_sys_error(saveerrno); |
| err_load_strings(SYS_str_reasons); |
| } |
| #endif |
| |
| #define err_clear_data(p, i) \ |
| do { \ |
| if ((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 { \ |
| err_clear_data(p, i); \ |
| (p)->err_flags[i] = 0; \ |
| (p)->err_buffer[i] = 0; \ |
| (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); |
| } |
| |
| DEFINE_RUN_ONCE_STATIC(do_err_strings_init) |
| { |
| if (!OPENSSL_init_crypto(0, NULL)) |
| return 0; |
| err_string_lock = CRYPTO_THREAD_lock_new(); |
| if (err_string_lock == NULL) |
| return 0; |
| #ifndef OPENSSL_NO_ERR |
| int_error_hash = lh_ERR_STRING_DATA_new(err_string_data_hash, |
| err_string_data_cmp); |
| if (int_error_hash == NULL) { |
| CRYPTO_THREAD_lock_free(err_string_lock); |
| err_string_lock = NULL; |
| return 0; |
| } |
| #endif |
| return 1; |
| } |
| |
| void err_cleanup(void) |
| { |
| if (set_err_thread_local != 0) |
| CRYPTO_THREAD_cleanup_local(&err_thread_local); |
| CRYPTO_THREAD_lock_free(err_string_lock); |
| err_string_lock = NULL; |
| #ifndef OPENSSL_NO_ERR |
| lh_ERR_STRING_DATA_free(int_error_hash); |
| int_error_hash = NULL; |
| #endif |
| } |
| |
| #ifndef OPENSSL_NO_ERR |
| /* |
| * Legacy; pack in the library. |
| */ |
| static void err_patch(int lib, ERR_STRING_DATA *str) |
| { |
| unsigned long plib = ERR_PACK(lib, 0, 0); |
| |
| for (; str->error != 0; str++) |
| str->error |= plib; |
| } |
| |
| /* |
| * Hash in |str| error strings. Assumes the URN_ONCE was done. |
| */ |
| static int err_load_strings(const ERR_STRING_DATA *str) |
| { |
| CRYPTO_THREAD_write_lock(err_string_lock); |
| for (; str->error; str++) |
| (void)lh_ERR_STRING_DATA_insert(int_error_hash, |
| (ERR_STRING_DATA *)str); |
| CRYPTO_THREAD_unlock(err_string_lock); |
| return 1; |
| } |
| #endif |
| |
| int ERR_load_ERR_strings(void) |
| { |
| #ifndef OPENSSL_NO_ERR |
| if (!RUN_ONCE(&err_string_init, do_err_strings_init)) |
| return 0; |
| |
| err_load_strings(ERR_str_libraries); |
| err_load_strings(ERR_str_reasons); |
| err_patch(ERR_LIB_SYS, ERR_str_functs); |
| err_load_strings(ERR_str_functs); |
| build_SYS_str_reasons(); |
| #endif |
| return 1; |
| } |
| |
| int ERR_load_strings(int lib, ERR_STRING_DATA *str) |
| { |
| #ifndef OPENSSL_NO_ERR |
| if (ERR_load_ERR_strings() == 0) |
| return 0; |
| |
| err_patch(lib, str); |
| err_load_strings(str); |
| #endif |
| |
| return 1; |
| } |
| |
| int ERR_load_strings_const(const ERR_STRING_DATA *str) |
| { |
| #ifndef OPENSSL_NO_ERR |
| if (ERR_load_ERR_strings() == 0) |
| return 0; |
| err_load_strings(str); |
| #endif |
| |
| return 1; |
| } |
| |
| int ERR_unload_strings(int lib, ERR_STRING_DATA *str) |
| { |
| #ifndef OPENSSL_NO_ERR |
| if (!RUN_ONCE(&err_string_init, do_err_strings_init)) |
| return 0; |
| |
| CRYPTO_THREAD_write_lock(err_string_lock); |
| /* |
| * We don't need to ERR_PACK the lib, since that was done (to |
| * the table) when it was loaded. |
| */ |
| for (; str->error; str++) |
| (void)lh_ERR_STRING_DATA_delete(int_error_hash, str); |
| CRYPTO_THREAD_unlock(err_string_lock); |
| #endif |
| |
| return 1; |
| } |
| |
| void err_free_strings_int(void) |
| { |
| /* obsolete */ |
| } |
| |
| /********************************************************/ |
| |
| 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(); |
| if (es == NULL) |
| return; |
| |
| 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(); |
| if (es == NULL) |
| return; |
| |
| 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 (es == NULL) |
| return 0; |
| |
| if (inc && top) { |
| if (file) |
| *file = ""; |
| if (line) |
| *line = 0; |
| if (data) |
| *data = ""; |
| if (flags) |
| *flags = 0; |
| |
| return ERR_R_INTERNAL_ERROR; |
| } |
| |
| while (es->bottom != es->top) { |
| if (es->err_flags[es->top] & ERR_FLAG_CLEAR) { |
| err_clear(es, es->top); |
| 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); |
| continue; |
| } |
| break; |
| } |
| |
| 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"; |
| *line = 0; |
| } else { |
| *file = es->err_file[i]; |
| *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); |
| ls = ERR_lib_error_string(e); |
| if (ls == NULL) { |
| BIO_snprintf(lsbuf, sizeof(lsbuf), "lib(%lu)", l); |
| ls = lsbuf; |
| } |
| |
| fs = ERR_func_error_string(e); |
| f = ERR_GET_FUNC(e); |
| if (fs == NULL) { |
| BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f); |
| fs = fsbuf; |
| } |
| |
| 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, fs, 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) |
| { |
| #ifndef OPENSSL_NO_ERR |
| 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); |
| #else |
| return NULL; |
| #endif |
| } |
| |
| const char *ERR_func_error_string(unsigned long e) |
| { |
| #ifndef OPENSSL_NO_ERR |
| ERR_STRING_DATA d, *p; |
| unsigned long l, f; |
| |
| if (!RUN_ONCE(&err_string_init, do_err_strings_init)) { |
| return NULL; |
| } |
| |
| l = ERR_GET_LIB(e); |
| f = ERR_GET_FUNC(e); |
| d.error = ERR_PACK(l, f, 0); |
| p = int_err_get_item(&d); |
| return ((p == NULL) ? NULL : p->string); |
| #else |
| return NULL; |
| #endif |
| } |
| |
| const char *ERR_reason_error_string(unsigned long e) |
| { |
| #ifndef OPENSSL_NO_ERR |
| 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) { |
| d.error = ERR_PACK(0, 0, r); |
| p = int_err_get_item(&d); |
| } |
| return ((p == NULL) ? NULL : p->string); |
| #else |
| return NULL; |
| #endif |
| } |
| |
| void err_delete_thread_state(void) |
| { |
| 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); |
| } |
| |
| #if OPENSSL_API_COMPAT < 0x10100000L |
| void ERR_remove_thread_state(void *dummy) |
| { |
| } |
| #endif |
| |
| #if OPENSSL_API_COMPAT < 0x10000000L |
| 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(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(OPENSSL_INIT_THREAD_ERR_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; |
| } |
| |
| /* |
| * 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, int flags) |
| { |
| ERR_STATE *es; |
| int i; |
| |
| es = ERR_get_state(); |
| if (es == NULL) |
| return 0; |
| |
| i = es->top; |
| |
| err_clear_data(es, i); |
| es->err_data[i] = data; |
| es->err_data_flags[i] = 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. |
| */ |
| err_set_error_data_int(data, 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; |
| if ((str = OPENSSL_malloc(s + 1)) == NULL) { |
| /* ERRerr(ERR_F_ERR_ADD_ERROR_VDATA, ERR_R_MALLOC_FAILURE); */ |
| return; |
| } |
| str[0] = '\0'; |
| |
| n = 0; |
| for (i = 0; i < num; i++) { |
| a = va_arg(args, char *); |
| if (a == NULL) |
| a = "<NULL>"; |
| n += strlen(a); |
| if (n > s) { |
| s = n + 20; |
| p = OPENSSL_realloc(str, s + 1); |
| if (p == NULL) { |
| OPENSSL_free(str); |
| return; |
| } |
| str = p; |
| } |
| OPENSSL_strlcat(str, a, (size_t)s + 1); |
| } |
| if (!err_set_error_data_int(str, ERR_TXT_MALLOCED | ERR_TXT_STRING)) |
| OPENSSL_free(str); |
| } |
| |
| int ERR_set_mark(void) |
| { |
| ERR_STATE *es; |
| |
| es = ERR_get_state(); |
| 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(); |
| if (es == NULL) |
| return 0; |
| |
| while (es->bottom != es->top |
| && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) { |
| err_clear(es, es->top); |
| 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(); |
| 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(); |
| 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; |
| } |