1 /* 2 * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (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 <stdio.h> 11 #include "internal/cryptlib.h" 12 #include <openssl/crypto.h> 13 #include <openssl/buffer.h> 14 #include <openssl/err.h> 15 16 void ERR_print_errors_cb(int (*cb) (const char *str, size_t len, void *u), 17 void *u) 18 { 19 unsigned long l; 20 char buf[256]; 21 char buf2[4096]; 22 const char *file, *data; 23 int line, flags; 24 /* 25 * We don't know what kind of thing CRYPTO_THREAD_ID is. Here is our best 26 * attempt to convert it into something we can print. 27 */ 28 union { 29 CRYPTO_THREAD_ID tid; 30 unsigned long ltid; 31 } tid; 32 33 tid.ltid = 0; 34 tid.tid = CRYPTO_THREAD_get_current_id(); 35 36 while ((l = ERR_get_error_line_data(&file, &line, &data, &flags)) != 0) { 37 ERR_error_string_n(l, buf, sizeof(buf)); 38 BIO_snprintf(buf2, sizeof(buf2), "%lu:%s:%s:%d:%s\n", tid.ltid, buf, 39 file, line, (flags & ERR_TXT_STRING) ? data : ""); 40 if (cb(buf2, strlen(buf2), u) <= 0) 41 break; /* abort outputting the error report */ 42 } 43 } 44 45 static int print_bio(const char *str, size_t len, void *bp) 46 { 47 return BIO_write((BIO *)bp, str, len); 48 } 49 50 void ERR_print_errors(BIO *bp) 51 { 52 ERR_print_errors_cb(print_bio, bp); 53 } 54 55 #ifndef OPENSSL_NO_STDIO 56 void ERR_print_errors_fp(FILE *fp) 57 { 58 BIO *bio = BIO_new_fp(fp, BIO_NOCLOSE); 59 if (bio == NULL) 60 return; 61 62 ERR_print_errors_cb(print_bio, bio); 63 BIO_free(bio); 64 } 65 #endif 66