1/* 2 * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the Apache License 2.0 (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10#include <openssl/err.h> 11#include <openssl/e_os2.h> 12 13static ossl_inline void err_get_slot(ERR_STATE *es) 14{ 15 es->top = (es->top + 1) % ERR_NUM_ERRORS; 16 if (es->top == es->bottom) 17 es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS; 18} 19 20static ossl_inline void err_clear_data(ERR_STATE *es, size_t i, int deall) 21{ 22 if (es->err_data_flags[i] & ERR_TXT_MALLOCED) { 23 if (deall) { 24 OPENSSL_free(es->err_data[i]); 25 es->err_data[i] = NULL; 26 es->err_data_size[i] = 0; 27 es->err_data_flags[i] = 0; 28 } else if (es->err_data[i] != NULL) { 29 es->err_data[i][0] = '\0'; 30 es->err_data_flags[i] = ERR_TXT_MALLOCED; 31 } 32 } else { 33 es->err_data[i] = NULL; 34 es->err_data_size[i] = 0; 35 es->err_data_flags[i] = 0; 36 } 37} 38 39static ossl_inline void err_set_error(ERR_STATE *es, size_t i, 40 int lib, int reason) 41{ 42 es->err_buffer[i] = 43 lib == ERR_LIB_SYS 44 ? (unsigned int)(ERR_SYSTEM_FLAG | reason) 45 : ERR_PACK(lib, 0, reason); 46} 47 48static ossl_inline void err_set_debug(ERR_STATE *es, size_t i, 49 const char *file, int line, 50 const char *fn) 51{ 52 /* 53 * We dup the file and fn strings because they may be provider owned. If the 54 * provider gets unloaded, they may not be valid anymore. 55 */ 56 OPENSSL_free(es->err_file[i]); 57 if (file == NULL || file[0] == '\0') 58 es->err_file[i] = NULL; 59 else 60 es->err_file[i] = OPENSSL_strdup(file); 61 es->err_line[i] = line; 62 OPENSSL_free(es->err_func[i]); 63 if (fn == NULL || fn[0] == '\0') 64 es->err_func[i] = NULL; 65 else 66 es->err_func[i] = OPENSSL_strdup(fn); 67} 68 69static ossl_inline void err_set_data(ERR_STATE *es, size_t i, 70 void *data, size_t datasz, int flags) 71{ 72 if ((es->err_data_flags[i] & ERR_TXT_MALLOCED) != 0) 73 OPENSSL_free(es->err_data[i]); 74 es->err_data[i] = data; 75 es->err_data_size[i] = datasz; 76 es->err_data_flags[i] = flags; 77} 78 79static ossl_inline void err_clear(ERR_STATE *es, size_t i, int deall) 80{ 81 err_clear_data(es, i, (deall)); 82 es->err_marks[i] = 0; 83 es->err_flags[i] = 0; 84 es->err_buffer[i] = 0; 85 es->err_line[i] = -1; 86 OPENSSL_free(es->err_file[i]); 87 es->err_file[i] = NULL; 88 OPENSSL_free(es->err_func[i]); 89 es->err_func[i] = NULL; 90} 91 92ERR_STATE *ossl_err_get_state_int(void); 93void ossl_err_string_int(unsigned long e, const char *func, 94 char *buf, size_t len); 95