2 * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
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
10 /* TODO: When ERR_STATE becomes opaque, this musts be removed */
11 #define OSSL_FORCE_ERR_STATE
14 #include "internal/cryptlib.h"
15 #include <openssl/crypto.h>
16 #include <openssl/buffer.h>
17 #include <openssl/err.h>
18 #include "err_local.h"
20 #define ERR_PRINT_BUF_SIZE 4096
21 void ERR_print_errors_cb(int (*cb) (const char *str, size_t len, void *u),
24 CRYPTO_THREAD_ID tid = CRYPTO_THREAD_get_current_id();
26 const char *file, *data, *func;
29 while ((l = ERR_get_error_all(&file, &line, &func, &data, &flags)) != 0) {
30 char buf[ERR_PRINT_BUF_SIZE] = "";
34 if ((flags & ERR_TXT_STRING) == 0)
37 hex = ossl_buf2hexstr_sep((const unsigned char *)&tid, sizeof(tid), '\0');
38 BIO_snprintf(buf, sizeof(buf), "%s:", hex == NULL ? "<null>" : hex);
40 ossl_err_string_int(l, func, buf + offset, sizeof(buf) - offset);
41 offset += strlen(buf + offset);
42 BIO_snprintf(buf + offset, sizeof(buf) - offset, ":%s:%d:%s\n",
45 if (cb(buf, strlen(buf), u) <= 0)
46 break; /* abort outputting the error report */
50 /* auxiliary function for incrementally reporting texts via the error queue */
51 static void put_error(int lib, const char *func, int reason,
52 const char *file, int line)
55 ERR_set_debug(file, line, func);
56 ERR_set_error(lib, reason, NULL /* no data here, so fmt is NULL */);
59 #define TYPICAL_MAX_OUTPUT_BEFORE_DATA 100
60 #define MAX_DATA_LEN (ERR_PRINT_BUF_SIZE - TYPICAL_MAX_OUTPUT_BEFORE_DATA)
61 void ERR_add_error_txt(const char *separator, const char *txt)
63 const char *file = NULL;
65 const char *func = NULL;
66 const char *data = NULL;
68 unsigned long err = ERR_peek_last_error();
70 if (separator == NULL)
73 put_error(ERR_LIB_NONE, NULL, 0, "", 0);
76 size_t available_len, data_len;
77 const char *curr = txt, *next = txt;
78 const char *leading_separator = separator;
79 int trailing_separator = 0;
82 ERR_peek_last_error_all(&file, &line, &func, &data, &flags);
83 if ((flags & ERR_TXT_STRING) == 0) {
85 leading_separator = "";
87 data_len = strlen(data);
89 /* workaround for limit of ERR_print_errors_cb() */
90 if (data_len >= MAX_DATA_LEN
91 || strlen(separator) >= (size_t)(MAX_DATA_LEN - data_len))
94 available_len = MAX_DATA_LEN - data_len - strlen(separator) - 1;
95 /* MAX_DATA_LEN > available_len >= 0 */
97 if (*separator == '\0') {
98 const size_t len_next = strlen(next);
100 if (len_next <= available_len) {
102 curr = NULL; /* no need to split */
104 next += available_len;
105 curr = next; /* will split at this point */
108 while (*next != '\0' && (size_t)(next - txt) <= available_len) {
110 next = strstr(curr, separator);
112 next += strlen(separator);
113 trailing_separator = *next == '\0';
115 next = curr + strlen(curr);
118 if ((size_t)(next - txt) <= available_len)
119 curr = NULL; /* the above loop implies *next == '\0' */
122 /* split error msg at curr since error data would get too long */
124 tmp = OPENSSL_strndup(txt, curr - txt);
127 ERR_add_error_data(2, separator, tmp);
130 put_error(ERR_GET_LIB(err), func, err, file, line);
133 if (trailing_separator) {
134 tmp = OPENSSL_strndup(txt, next - strlen(separator) - txt);
137 /* output txt without the trailing separator */
138 ERR_add_error_data(2, leading_separator, tmp);
141 ERR_add_error_data(2, leading_separator, txt);
143 txt = next; /* finished */
145 } while (*txt != '\0');
148 void ERR_add_error_mem_bio(const char *separator, BIO *bio)
152 long len = BIO_get_mem_data(bio, &str);
155 if (str[len - 1] != '\0') {
156 if (BIO_write(bio, "", 1) <= 0)
159 len = BIO_get_mem_data(bio, &str);
162 ERR_add_error_txt(separator, str);
167 static int print_bio(const char *str, size_t len, void *bp)
169 return BIO_write((BIO *)bp, str, len);
172 void ERR_print_errors(BIO *bp)
174 ERR_print_errors_cb(print_bio, bp);
177 #ifndef OPENSSL_NO_STDIO
178 void ERR_print_errors_fp(FILE *fp)
180 BIO *bio = BIO_new_fp(fp, BIO_NOCLOSE);
184 ERR_print_errors_cb(print_bio, bio);