2 * Copyright 1995-2020 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 = openssl_buf2hexstr_sep((const unsigned char *)&tid, sizeof(tid),
39 BIO_snprintf(buf, sizeof(buf), "%s:", hex == NULL ? "<null>" : hex);
41 ossl_err_string_int(l, func, buf + offset, sizeof(buf) - offset);
42 offset += strlen(buf + offset);
43 BIO_snprintf(buf + offset, sizeof(buf) - offset, ":%s:%d:%s\n",
46 if (cb(buf, strlen(buf), u) <= 0)
47 break; /* abort outputting the error report */
51 /* auxiliary function for incrementally reporting texts via the error queue */
52 static void put_error(int lib, const char *func, int reason,
53 const char *file, int line)
56 ERR_set_debug(file, line, func);
57 ERR_set_error(lib, reason, NULL /* no data here, so fmt is NULL */);
60 #define TYPICAL_MAX_OUTPUT_BEFORE_DATA 100
61 #define MAX_DATA_LEN (ERR_PRINT_BUF_SIZE - TYPICAL_MAX_OUTPUT_BEFORE_DATA)
62 void ERR_add_error_txt(const char *separator, const char *txt)
64 const char *file = NULL;
66 const char *func = NULL;
67 const char *data = NULL;
69 unsigned long err = ERR_peek_last_error();
71 if (separator == NULL)
74 put_error(ERR_LIB_NONE, NULL, 0, "", 0);
77 size_t available_len, data_len;
78 const char *curr = txt, *next = txt;
79 const char *leading_separator = separator;
80 int trailing_separator = 0;
83 ERR_peek_last_error_all(&file, &line, &func, &data, &flags);
84 if ((flags & ERR_TXT_STRING) == 0) {
86 leading_separator = "";
88 data_len = strlen(data);
90 /* workaround for limit of ERR_print_errors_cb() */
91 if (data_len >= MAX_DATA_LEN
92 || strlen(separator) >= (size_t)(MAX_DATA_LEN - data_len))
95 available_len = MAX_DATA_LEN - data_len - strlen(separator) - 1;
96 /* MAX_DATA_LEN > available_len >= 0 */
98 if (*separator == '\0') {
99 const size_t len_next = strlen(next);
101 if (len_next <= available_len) {
103 curr = NULL; /* no need to split */
105 next += available_len;
106 curr = next; /* will split at this point */
109 while (*next != '\0' && (size_t)(next - txt) <= available_len) {
111 next = strstr(curr, separator);
113 next += strlen(separator);
114 trailing_separator = *next == '\0';
116 next = curr + strlen(curr);
119 if ((size_t)(next - txt) <= available_len)
120 curr = NULL; /* the above loop implies *next == '\0' */
123 /* split error msg at curr since error data would get too long */
125 tmp = OPENSSL_strndup(txt, curr - txt);
128 ERR_add_error_data(2, separator, tmp);
131 put_error(ERR_GET_LIB(err), func, err, file, line);
134 if (trailing_separator) {
135 tmp = OPENSSL_strndup(txt, next - strlen(separator) - txt);
138 /* output txt without the trailing separator */
139 ERR_add_error_data(2, leading_separator, tmp);
142 ERR_add_error_data(2, leading_separator, txt);
144 txt = next; /* finished */
146 } while (*txt != '\0');
149 void ERR_add_error_mem_bio(const char *separator, BIO *bio)
153 long len = BIO_get_mem_data(bio, &str);
156 if (str[len - 1] != '\0') {
157 if (BIO_write(bio, "", 1) <= 0)
160 len = BIO_get_mem_data(bio, &str);
163 ERR_add_error_txt(separator, str);
168 static int print_bio(const char *str, size_t len, void *bp)
170 return BIO_write((BIO *)bp, str, len);
173 void ERR_print_errors(BIO *bp)
175 ERR_print_errors_cb(print_bio, bp);
178 #ifndef OPENSSL_NO_STDIO
179 void ERR_print_errors_fp(FILE *fp)
181 BIO *bio = BIO_new_fp(fp, BIO_NOCLOSE);
185 ERR_print_errors_cb(print_bio, bio);