1 /* 2 * Copyright 1995-2023 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 <string.h> 11 #include <openssl/err.h> 12 #include <openssl/e_os2.h> 13 14 static ossl_inline void err_get_slot(ERR_STATE *es) 15 { 16 es->top = (es->top + 1) % ERR_NUM_ERRORS; 17 if (es->top == es->bottom) 18 es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS; 19 } 20 21 static ossl_inline void err_clear_data(ERR_STATE *es, size_t i, int deall) 22 { 23 if (es->err_data_flags[i] & ERR_TXT_MALLOCED) { 24 if (deall) { 25 OPENSSL_free(es->err_data[i]); 26 es->err_data[i] = NULL; 27 es->err_data_size[i] = 0; 28 es->err_data_flags[i] = 0; 29 } else if (es->err_data[i] != NULL) { 30 es->err_data[i][0] = '\0'; 31 es->err_data_flags[i] = ERR_TXT_MALLOCED; 32 } 33 } else { 34 es->err_data[i] = NULL; 35 es->err_data_size[i] = 0; 36 es->err_data_flags[i] = 0; 37 } 38 } 39 40 static ossl_inline void err_set_error(ERR_STATE *es, size_t i, 41 int lib, int reason) 42 { 43 es->err_buffer[i] = lib == ERR_LIB_SYS 44 ? (unsigned int)(ERR_SYSTEM_FLAG | reason) 45 : ERR_PACK(lib, 0, reason); 46 } 47 48 static 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 if ((es->err_file[i] = CRYPTO_malloc(strlen(file) + 1, 60 NULL, 0)) 61 != NULL) 62 /* We cannot use OPENSSL_strdup due to possible recursion */ 63 strcpy(es->err_file[i], file); 64 65 es->err_line[i] = line; 66 OPENSSL_free(es->err_func[i]); 67 if (fn == NULL || fn[0] == '\0') 68 es->err_func[i] = NULL; 69 else if ((es->err_func[i] = CRYPTO_malloc(strlen(fn) + 1, 70 NULL, 0)) 71 != NULL) 72 strcpy(es->err_func[i], fn); 73 } 74 75 static ossl_inline void err_set_data(ERR_STATE *es, size_t i, 76 void *data, size_t datasz, int flags) 77 { 78 if ((es->err_data_flags[i] & ERR_TXT_MALLOCED) != 0) 79 OPENSSL_free(es->err_data[i]); 80 es->err_data[i] = data; 81 es->err_data_size[i] = datasz; 82 es->err_data_flags[i] = flags; 83 } 84 85 static ossl_inline void err_clear(ERR_STATE *es, size_t i, int deall) 86 { 87 err_clear_data(es, i, (deall)); 88 es->err_marks[i] = 0; 89 es->err_flags[i] = 0; 90 es->err_buffer[i] = 0; 91 es->err_line[i] = -1; 92 OPENSSL_free(es->err_file[i]); 93 es->err_file[i] = NULL; 94 OPENSSL_free(es->err_func[i]); 95 es->err_func[i] = NULL; 96 } 97 98 ERR_STATE *ossl_err_get_state_int(void); 99 void ossl_err_string_int(unsigned long e, const char *func, 100 char *buf, size_t len); 101