/*
- * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
*
- * Licensed under the OpenSSL license (the "License"). You may not use
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
+#define OSSL_FORCE_ERR_STATE
+
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
-#include "internal/cryptlib_int.h"
+#include "crypto/cryptlib.h"
#include "internal/err.h"
-#include "internal/err_int.h"
+#include "crypto/err.h"
#include <openssl/err.h>
#include <openssl/crypto.h>
#include <openssl/buffer.h>
#include <openssl/bio.h>
#include <openssl/opensslconf.h>
#include "internal/thread_once.h"
+#include "crypto/ctype.h"
+#include "internal/constant_time.h"
+#include "e_os.h"
+#include "err_local.h"
+
+/* Forward declaration in case it's not published because of configuration */
+ERR_STATE *ERR_get_state(void);
static int err_load_strings(const ERR_STRING_DATA *str);
{ERR_PACK(ERR_LIB_UI, 0, 0), "UI routines"},
{ERR_PACK(ERR_LIB_FIPS, 0, 0), "FIPS routines"},
{ERR_PACK(ERR_LIB_CMS, 0, 0), "CMS routines"},
+ {ERR_PACK(ERR_LIB_CRMF, 0, 0), "CRMF routines"},
+ {ERR_PACK(ERR_LIB_CMP, 0, 0), "CMP routines"},
{ERR_PACK(ERR_LIB_HMAC, 0, 0), "HMAC routines"},
{ERR_PACK(ERR_LIB_CT, 0, 0), "CT routines"},
{ERR_PACK(ERR_LIB_ASYNC, 0, 0), "ASYNC routines"},
{ERR_PACK(ERR_LIB_KDF, 0, 0), "KDF routines"},
{ERR_PACK(ERR_LIB_OSSL_STORE, 0, 0), "STORE routines"},
+ {ERR_PACK(ERR_LIB_SM2, 0, 0), "SM2 routines"},
+ {ERR_PACK(ERR_LIB_ESS, 0, 0), "ESS routines"},
+ {ERR_PACK(ERR_LIB_PROV, 0, 0), "Provider routines"},
+ {ERR_PACK(ERR_LIB_OSSL_ENCODER, 0, 0), "ENCODER routines"},
+ {ERR_PACK(ERR_LIB_OSSL_DECODER, 0, 0), "DECODER routines"},
+ {ERR_PACK(ERR_LIB_HTTP, 0, 0), "HTTP routines"},
{0, NULL},
};
-static ERR_STRING_DATA ERR_str_functs[] = {
- {ERR_PACK(0, SYS_F_FOPEN, 0), "fopen"},
- {ERR_PACK(0, SYS_F_CONNECT, 0), "connect"},
- {ERR_PACK(0, SYS_F_GETSERVBYNAME, 0), "getservbyname"},
- {ERR_PACK(0, SYS_F_SOCKET, 0), "socket"},
- {ERR_PACK(0, SYS_F_IOCTLSOCKET, 0), "ioctlsocket"},
- {ERR_PACK(0, SYS_F_BIND, 0), "bind"},
- {ERR_PACK(0, SYS_F_LISTEN, 0), "listen"},
- {ERR_PACK(0, SYS_F_ACCEPT, 0), "accept"},
-# ifdef OPENSSL_SYS_WINDOWS
- {ERR_PACK(0, SYS_F_WSASTARTUP, 0), "WSAstartup"},
-# endif
- {ERR_PACK(0, SYS_F_OPENDIR, 0), "opendir"},
- {ERR_PACK(0, SYS_F_FREAD, 0), "fread"},
- {ERR_PACK(0, SYS_F_GETADDRINFO, 0), "getaddrinfo"},
- {ERR_PACK(0, SYS_F_GETNAMEINFO, 0), "getnameinfo"},
- {ERR_PACK(0, SYS_F_SETSOCKOPT, 0), "setsockopt"},
- {ERR_PACK(0, SYS_F_GETSOCKOPT, 0), "getsockopt"},
- {ERR_PACK(0, SYS_F_GETSOCKNAME, 0), "getsockname"},
- {ERR_PACK(0, SYS_F_GETHOSTBYNAME, 0), "gethostbyname"},
- {ERR_PACK(0, SYS_F_FFLUSH, 0), "fflush"},
- {ERR_PACK(0, SYS_F_OPEN, 0), "open"},
- {ERR_PACK(0, SYS_F_CLOSE, 0), "close"},
- {ERR_PACK(0, SYS_F_IOCTL, 0), "ioctl"},
- {ERR_PACK(0, SYS_F_STAT, 0), "stat"},
- {ERR_PACK(0, SYS_F_FCNTL, 0), "fcntl"},
- {0, NULL},
-};
-
+/*
+ * Should make sure that all ERR_R_ reasons defined in include/openssl/err.h.in
+ * are listed. For maintainability, please keep all reasons in the same order.
+ */
static ERR_STRING_DATA ERR_str_reasons[] = {
{ERR_R_SYS_LIB, "system lib"},
{ERR_R_BN_LIB, "BN lib"},
{ERR_R_DSA_LIB, "DSA lib"},
{ERR_R_X509_LIB, "X509 lib"},
{ERR_R_ASN1_LIB, "ASN1 lib"},
+ {ERR_R_CRYPTO_LIB, "CRYPTO lib"},
{ERR_R_EC_LIB, "EC lib"},
{ERR_R_BIO_LIB, "BIO lib"},
{ERR_R_PKCS7_LIB, "PKCS7 lib"},
{ERR_R_X509V3_LIB, "X509V3 lib"},
{ERR_R_ENGINE_LIB, "ENGINE lib"},
{ERR_R_UI_LIB, "UI lib"},
- {ERR_R_OSSL_STORE_LIB, "STORE lib"},
{ERR_R_ECDSA_LIB, "ECDSA lib"},
-
- {ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"},
- {ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"},
+ {ERR_R_OSSL_STORE_LIB, "OSSL_STORE lib"},
+ {ERR_R_OSSL_DECODER_LIB, "OSSL_DECODER lib"},
{ERR_R_FATAL, "fatal"},
{ERR_R_MALLOC_FAILURE, "malloc failure"},
{ERR_R_INTERNAL_ERROR, "internal error"},
{ERR_R_DISABLED, "called a function that was disabled at compile-time"},
{ERR_R_INIT_FAIL, "init fail"},
+ {ERR_R_PASSED_INVALID_ARGUMENT, "passed invalid argument"},
{ERR_R_OPERATION_FAIL, "operation fail"},
-
+ {ERR_R_INVALID_PROVIDER_FUNCTIONS, "invalid provider functions"},
+ {ERR_R_INTERRUPTED_OR_CANCELLED, "interrupted or cancelled"},
+ {ERR_R_NESTED_ASN1_ERROR, "nested asn1 error"},
+ {ERR_R_MISSING_ASN1_EOS, "missing asn1 eos"},
+ /*
+ * Something is unsupported, exactly what is expressed with additional data
+ */
+ {ERR_R_UNSUPPORTED, "unsupported"},
+ /*
+ * A fetch failed for other reasons than the name to be fetched being
+ * unsupported.
+ */
+ {ERR_R_FETCH_FAILED, "fetch failed"},
+ {ERR_R_INVALID_PROPERTY_DEFINITION, "invalid property definition"},
+ {ERR_R_UNABLE_TO_GET_READ_LOCK, "unable to get read lock"},
+ {ERR_R_UNABLE_TO_GET_WRITE_LOCK, "unable to get write lock"},
{0, NULL},
};
#endif
static LHASH_OF(ERR_STRING_DATA) *int_error_hash = NULL;
static int int_err_library_number = ERR_LIB_USER;
-static unsigned long get_error_values(int inc, int top, const char **file,
- int *line, const char **data,
+typedef enum ERR_GET_ACTION_e {
+ EV_POP, EV_PEEK, EV_PEEK_LAST
+} ERR_GET_ACTION;
+
+static unsigned long get_error_values(ERR_GET_ACTION g,
+ const char **file, int *line,
+ const char **func, const char **data,
int *flags);
static unsigned long err_string_data_hash(const ERR_STRING_DATA *a)
unsigned long ret, l;
l = a->error;
- ret = l ^ ERR_GET_LIB(l) ^ ERR_GET_FUNC(l);
+ ret = l ^ ERR_GET_LIB(l);
return (ret ^ ret % 19 * 13);
}
{
ERR_STRING_DATA *p = NULL;
- CRYPTO_THREAD_read_lock(err_string_lock);
+ if (!CRYPTO_THREAD_read_lock(err_string_lock))
+ return NULL;
p = lh_ERR_STRING_DATA_retrieve(int_error_hash, d);
CRYPTO_THREAD_unlock(err_string_lock);
return p;
}
-#ifndef OPENSSL_NO_ERR
-# define NUM_SYS_STR_REASONS 127
-# define LEN_SYS_STR_REASON 32
-
-static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1];
-/*
- * SYS_str_reasons is filled with copies of strerror() results at
- * initialization. 'errno' values up to 127 should cover all usual errors,
- * others will be displayed numerically by ERR_error_string. It is crucial
- * that we have something for each reason code that occurs in
- * ERR_str_reasons, or bogus reason strings will be returned for SYSerr(),
- * which always gets an errno value and never one of those 'standard' reason
- * codes.
- */
-
-static void build_SYS_str_reasons(void)
-{
- /* OPENSSL_malloc cannot be used here, use static storage instead */
- static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON];
- static int init = 1;
- int i;
-
- CRYPTO_THREAD_write_lock(err_string_lock);
- if (!init) {
- CRYPTO_THREAD_unlock(err_string_lock);
- return;
- }
-
- for (i = 1; i <= NUM_SYS_STR_REASONS; i++) {
- ERR_STRING_DATA *str = &SYS_str_reasons[i - 1];
-
- str->error = ERR_PACK(ERR_LIB_SYS, 0, i);
- if (str->string == NULL) {
- char (*dest)[LEN_SYS_STR_REASON] = &(strerror_tab[i - 1]);
- if (openssl_strerror_r(i, *dest, sizeof(*dest)))
- str->string = *dest;
- }
- if (str->string == NULL)
- str->string = "unknown";
- }
-
- /*
- * Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, as
- * required by ERR_load_strings.
- */
-
- init = 0;
-
- CRYPTO_THREAD_unlock(err_string_lock);
- err_load_strings(SYS_str_reasons);
-}
-#endif
-
-#define err_clear_data(p,i) \
- do { \
- if ((p)->err_data_flags[i] & ERR_TXT_MALLOCED) \
- { \
- OPENSSL_free((p)->err_data[i]); \
- (p)->err_data[i]=NULL; \
- } \
- (p)->err_data_flags[i]=0; \
- } while(0)
-
-#define err_clear(p,i) \
- do { \
- (p)->err_flags[i]=0; \
- (p)->err_buffer[i]=0; \
- err_clear_data(p,i); \
- (p)->err_file[i]=NULL; \
- (p)->err_line[i]= -1; \
- } while(0)
-
static void ERR_STATE_free(ERR_STATE *s)
{
int i;
if (s == NULL)
return;
-
for (i = 0; i < ERR_NUM_ERRORS; i++) {
- err_clear_data(s, i);
+ err_clear(s, i, 1);
}
OPENSSL_free(s);
}
DEFINE_RUN_ONCE_STATIC(do_err_strings_init)
{
- OPENSSL_init_crypto(0, NULL);
- err_string_lock = CRYPTO_THREAD_glock_new("err_string");
+ if (!OPENSSL_init_crypto(OPENSSL_INIT_BASE_ONLY, NULL))
+ return 0;
+ err_string_lock = CRYPTO_THREAD_lock_new();
+ if (err_string_lock == NULL)
+ return 0;
int_error_hash = lh_ERR_STRING_DATA_new(err_string_data_hash,
err_string_data_cmp);
- return err_string_lock != NULL && int_error_hash != NULL;
+ if (int_error_hash == NULL) {
+ CRYPTO_THREAD_lock_free(err_string_lock);
+ err_string_lock = NULL;
+ return 0;
+ }
+ return 1;
}
void err_cleanup(void)
}
/*
- * Hash in |str| error strings. Assumes the URN_ONCE was done.
+ * Hash in |str| error strings. Assumes the RUN_ONCE was done.
*/
static int err_load_strings(const ERR_STRING_DATA *str)
{
- CRYPTO_THREAD_write_lock(err_string_lock);
+ if (!CRYPTO_THREAD_write_lock(err_string_lock))
+ return 0;
for (; str->error; str++)
(void)lh_ERR_STRING_DATA_insert(int_error_hash,
(ERR_STRING_DATA *)str);
return 1;
}
-int ERR_load_ERR_strings(void)
+int ossl_err_load_ERR_strings(void)
{
#ifndef OPENSSL_NO_ERR
if (!RUN_ONCE(&err_string_init, do_err_strings_init))
err_load_strings(ERR_str_libraries);
err_load_strings(ERR_str_reasons);
- err_patch(ERR_LIB_SYS, ERR_str_functs);
- err_load_strings(ERR_str_functs);
- build_SYS_str_reasons();
#endif
return 1;
}
int ERR_load_strings(int lib, ERR_STRING_DATA *str)
{
- if (ERR_load_ERR_strings() == 0)
+ if (ossl_err_load_ERR_strings() == 0)
return 0;
err_patch(lib, str);
int ERR_load_strings_const(const ERR_STRING_DATA *str)
{
- if (ERR_load_ERR_strings() == 0)
+ if (ossl_err_load_ERR_strings() == 0)
return 0;
err_load_strings(str);
return 1;
if (!RUN_ONCE(&err_string_init, do_err_strings_init))
return 0;
- CRYPTO_THREAD_write_lock(err_string_lock);
+ if (!CRYPTO_THREAD_write_lock(err_string_lock))
+ return 0;
/*
* We don't need to ERR_PACK the lib, since that was done (to
* the table) when it was loaded.
/********************************************************/
-void ERR_put_error(int lib, int func, int reason, const char *file, int line)
-{
- ERR_STATE *es;
-
-#ifdef _OSD_POSIX
- /*
- * In the BS2000-OSD POSIX subsystem, the compiler generates path names
- * in the form "*POSIX(/etc/passwd)". This dirty hack strips them to
- * something sensible. @@@ We shouldn't modify a const string, though.
- */
- if (strncmp(file, "*POSIX(", sizeof("*POSIX(") - 1) == 0) {
- char *end;
-
- /* Skip the "*POSIX(" prefix */
- file += sizeof("*POSIX(") - 1;
- end = &file[strlen(file) - 1];
- if (*end == ')')
- *end = '\0';
- /* Optional: use the basename of the path only. */
- if ((end = strrchr(file, '/')) != NULL)
- file = &end[1];
- }
-#endif
- es = ERR_get_state();
- if (es == NULL)
- return;
-
- es->top = (es->top + 1) % ERR_NUM_ERRORS;
- if (es->top == es->bottom)
- es->bottom = (es->bottom + 1) % ERR_NUM_ERRORS;
- es->err_flags[es->top] = 0;
- es->err_buffer[es->top] = ERR_PACK(lib, func, reason);
- es->err_file[es->top] = file;
- es->err_line[es->top] = line;
- err_clear_data(es, es->top);
-}
-
void ERR_clear_error(void)
{
int i;
ERR_STATE *es;
- es = ERR_get_state();
+ es = ossl_err_get_state_int();
if (es == NULL)
return;
for (i = 0; i < ERR_NUM_ERRORS; i++) {
- err_clear(es, i);
+ err_clear(es, i, 0);
}
es->top = es->bottom = 0;
}
unsigned long ERR_get_error(void)
{
- return get_error_values(1, 0, NULL, NULL, NULL, NULL);
+ return get_error_values(EV_POP, NULL, NULL, NULL, NULL, NULL);
}
+unsigned long ERR_get_error_all(const char **file, int *line,
+ const char **func,
+ const char **data, int *flags)
+{
+ return get_error_values(EV_POP, file, line, func, data, flags);
+}
+
+#ifndef OPENSSL_NO_DEPRECATED_3_0
unsigned long ERR_get_error_line(const char **file, int *line)
{
- return get_error_values(1, 0, file, line, NULL, NULL);
+ return get_error_values(EV_POP, file, line, NULL, NULL, NULL);
}
unsigned long ERR_get_error_line_data(const char **file, int *line,
const char **data, int *flags)
{
- return get_error_values(1, 0, file, line, data, flags);
+ return get_error_values(EV_POP, file, line, NULL, data, flags);
}
+#endif
unsigned long ERR_peek_error(void)
{
- return get_error_values(0, 0, NULL, NULL, NULL, NULL);
+ return get_error_values(EV_PEEK, NULL, NULL, NULL, NULL, NULL);
}
unsigned long ERR_peek_error_line(const char **file, int *line)
{
- return get_error_values(0, 0, file, line, NULL, NULL);
+ return get_error_values(EV_PEEK, file, line, NULL, NULL, NULL);
+}
+
+unsigned long ERR_peek_error_func(const char **func)
+{
+ return get_error_values(EV_PEEK, NULL, NULL, func, NULL, NULL);
}
+unsigned long ERR_peek_error_data(const char **data, int *flags)
+{
+ return get_error_values(EV_PEEK, NULL, NULL, NULL, data, flags);
+}
+
+unsigned long ERR_peek_error_all(const char **file, int *line,
+ const char **func,
+ const char **data, int *flags)
+{
+ return get_error_values(EV_PEEK, file, line, func, data, flags);
+}
+
+#ifndef OPENSSL_NO_DEPRECATED_3_0
unsigned long ERR_peek_error_line_data(const char **file, int *line,
const char **data, int *flags)
{
- return get_error_values(0, 0, file, line, data, flags);
+ return get_error_values(EV_PEEK, file, line, NULL, data, flags);
}
+#endif
unsigned long ERR_peek_last_error(void)
{
- return get_error_values(0, 1, NULL, NULL, NULL, NULL);
+ return get_error_values(EV_PEEK_LAST, NULL, NULL, NULL, NULL, NULL);
}
unsigned long ERR_peek_last_error_line(const char **file, int *line)
{
- return get_error_values(0, 1, file, line, NULL, NULL);
+ return get_error_values(EV_PEEK_LAST, file, line, NULL, NULL, NULL);
}
+unsigned long ERR_peek_last_error_func(const char **func)
+{
+ return get_error_values(EV_PEEK_LAST, NULL, NULL, func, NULL, NULL);
+}
+
+unsigned long ERR_peek_last_error_data(const char **data, int *flags)
+{
+ return get_error_values(EV_PEEK_LAST, NULL, NULL, NULL, data, flags);
+}
+
+unsigned long ERR_peek_last_error_all(const char **file, int *line,
+ const char **func,
+ const char **data, int *flags)
+{
+ return get_error_values(EV_PEEK_LAST, file, line, func, data, flags);
+}
+
+#ifndef OPENSSL_NO_DEPRECATED_3_0
unsigned long ERR_peek_last_error_line_data(const char **file, int *line,
const char **data, int *flags)
{
- return get_error_values(0, 1, file, line, data, flags);
+ return get_error_values(EV_PEEK_LAST, file, line, NULL, data, flags);
}
+#endif
-static unsigned long get_error_values(int inc, int top, const char **file,
- int *line, const char **data,
- int *flags)
+static unsigned long get_error_values(ERR_GET_ACTION g,
+ const char **file, int *line,
+ const char **func,
+ const char **data, int *flags)
{
int i = 0;
ERR_STATE *es;
unsigned long ret;
- es = ERR_get_state();
+ es = ossl_err_get_state_int();
if (es == NULL)
return 0;
- if (inc && top) {
- if (file)
- *file = "";
- if (line)
- *line = 0;
- if (data)
- *data = "";
- if (flags)
- *flags = 0;
-
- return ERR_R_INTERNAL_ERROR;
+ /*
+ * Clear anything that should have been cleared earlier. We do this
+ * here because this doesn't have constant-time issues.
+ */
+ while (es->bottom != es->top) {
+ if (es->err_flags[es->top] & ERR_FLAG_CLEAR) {
+ err_clear(es, es->top, 0);
+ es->top = es->top > 0 ? es->top - 1 : ERR_NUM_ERRORS - 1;
+ continue;
+ }
+ i = (es->bottom + 1) % ERR_NUM_ERRORS;
+ if (es->err_flags[i] & ERR_FLAG_CLEAR) {
+ es->bottom = i;
+ err_clear(es, es->bottom, 0);
+ continue;
+ }
+ break;
}
+ /* If everything has been cleared, the stack is empty. */
if (es->bottom == es->top)
return 0;
- if (top)
- i = es->top; /* last error */
+
+ /* Which error, the top of stack (latest one) or the first one? */
+ if (g == EV_PEEK_LAST)
+ i = es->top;
else
- i = (es->bottom + 1) % ERR_NUM_ERRORS; /* first error */
+ i = (es->bottom + 1) % ERR_NUM_ERRORS;
ret = es->err_buffer[i];
- if (inc) {
+ if (g == EV_POP) {
es->bottom = i;
es->err_buffer[i] = 0;
}
- if (file != NULL && line != NULL) {
- if (es->err_file[i] == NULL) {
- *file = "NA";
- *line = 0;
- } else {
- *file = es->err_file[i];
- *line = es->err_line[i];
- }
+ if (file != NULL) {
+ *file = es->err_file[i];
+ if (*file == NULL)
+ *file = "";
}
-
+ if (line != NULL)
+ *line = es->err_line[i];
+ if (func != NULL) {
+ *func = es->err_func[i];
+ if (*func == NULL)
+ *func = "";
+ }
+ if (flags != NULL)
+ *flags = es->err_data_flags[i];
if (data == NULL) {
- if (inc) {
- err_clear_data(es, i);
+ if (g == EV_POP) {
+ err_clear_data(es, i, 0);
}
} else {
- if (es->err_data[i] == NULL) {
+ *data = es->err_data[i];
+ if (*data == NULL) {
*data = "";
if (flags != NULL)
*flags = 0;
- } else {
- *data = es->err_data[i];
- if (flags != NULL)
- *flags = es->err_data_flags[i];
}
}
return ret;
}
-void ERR_error_string_n(unsigned long e, char *buf, size_t len)
+void ossl_err_string_int(unsigned long e, const char *func,
+ char *buf, size_t len)
{
- char lsbuf[64], fsbuf[64], rsbuf[64];
- const char *ls, *fs, *rs;
- unsigned long l, f, r;
+ char lsbuf[64], rsbuf[256];
+ const char *ls, *rs = NULL;
+ unsigned long l, r;
if (len == 0)
return;
ls = lsbuf;
}
- fs = ERR_func_error_string(e);
- f = ERR_GET_FUNC(e);
- if (fs == NULL) {
- BIO_snprintf(fsbuf, sizeof(fsbuf), "func(%lu)", f);
- fs = fsbuf;
- }
-
- rs = ERR_reason_error_string(e);
+ /*
+ * ERR_reason_error_string() can't safely return system error strings,
+ * since it would call openssl_strerror_r(), which needs a buffer for
+ * thread safety. So for system errors, we call openssl_strerror_r()
+ * directly instead.
+ */
r = ERR_GET_REASON(e);
+#ifndef OPENSSL_NO_ERR
+ if (ERR_SYSTEM_ERROR(e)) {
+ if (openssl_strerror_r(r, rsbuf, sizeof(rsbuf)))
+ rs = rsbuf;
+ } else {
+ rs = ERR_reason_error_string(e);
+ }
+#endif
if (rs == NULL) {
- BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)", r);
+ BIO_snprintf(rsbuf, sizeof(rsbuf), "reason(%lu)",
+ r & ~(ERR_RFLAGS_MASK << ERR_RFLAGS_OFFSET));
rs = rsbuf;
}
- BIO_snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls, fs, rs);
+ BIO_snprintf(buf, len, "error:%08lX:%s:%s:%s", e, ls, func, rs);
if (strlen(buf) == len - 1) {
/* Didn't fit; use a minimal format. */
- BIO_snprintf(buf, len, "err:%lx:%lx:%lx:%lx", e, l, f, r);
+ BIO_snprintf(buf, len, "err:%lx:%lx:%lx:%lx", e, l, 0L, r);
}
}
+
+void ERR_error_string_n(unsigned long e, char *buf, size_t len)
+{
+ ossl_err_string_int(e, "", buf, len);
+}
+
/*
* ERR_error_string_n should be used instead for ret != NULL as
* ERR_error_string cannot know how large the buffer is
return ((p == NULL) ? NULL : p->string);
}
+#ifndef OPENSSL_NO_DEPRECATED_3_0
const char *ERR_func_error_string(unsigned long e)
{
- ERR_STRING_DATA d, *p;
- unsigned long l, f;
-
- if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
- return NULL;
- }
-
- l = ERR_GET_LIB(e);
- f = ERR_GET_FUNC(e);
- d.error = ERR_PACK(l, f, 0);
- p = int_err_get_item(&d);
- return ((p == NULL) ? NULL : p->string);
+ return NULL;
}
+#endif
const char *ERR_reason_error_string(unsigned long e)
{
return NULL;
}
+ /*
+ * ERR_reason_error_string() can't safely return system error strings,
+ * since openssl_strerror_r() needs a buffer for thread safety, and we
+ * haven't got one that would serve any sensible purpose.
+ */
+ if (ERR_SYSTEM_ERROR(e))
+ return NULL;
+
l = ERR_GET_LIB(e);
r = ERR_GET_REASON(e);
d.error = ERR_PACK(l, 0, r);
p = int_err_get_item(&d);
- if (!p) {
+ if (p == NULL) {
d.error = ERR_PACK(0, 0, r);
p = int_err_get_item(&d);
}
return ((p == NULL) ? NULL : p->string);
}
-void err_delete_thread_state(void)
+static void err_delete_thread_state(void *unused)
{
ERR_STATE *state = CRYPTO_THREAD_get_local(&err_thread_local);
if (state == NULL)
ERR_STATE_free(state);
}
-#if OPENSSL_API_COMPAT < 0x10100000L
+#ifndef OPENSSL_NO_DEPRECATED_1_1_0
void ERR_remove_thread_state(void *dummy)
{
}
#endif
-#if OPENSSL_API_COMPAT < 0x10000000L
+#ifndef OPENSSL_NO_DEPRECATED_1_0_0
void ERR_remove_state(unsigned long pid)
{
}
return CRYPTO_THREAD_init_local(&err_thread_local, NULL);
}
-ERR_STATE *ERR_get_state(void)
+ERR_STATE *ossl_err_get_state_int(void)
{
- ERR_STATE *state = NULL;
+ ERR_STATE *state;
+ int saveerrno = get_last_sys_error();
+
+ if (!OPENSSL_init_crypto(OPENSSL_INIT_BASE_ONLY, NULL))
+ return NULL;
if (!RUN_ONCE(&err_init, err_do_init))
return NULL;
state = CRYPTO_THREAD_get_local(&err_thread_local);
+ if (state == (ERR_STATE*)-1)
+ return NULL;
if (state == NULL) {
- state = OPENSSL_zalloc(sizeof(*state));
- if (state == NULL)
+ if (!CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)-1))
return NULL;
- if (!ossl_init_thread_start(OPENSSL_INIT_THREAD_ERR_STATE)
- || !CRYPTO_THREAD_set_local(&err_thread_local, state)) {
+ if ((state = OPENSSL_zalloc(sizeof(*state))) == NULL) {
+ CRYPTO_THREAD_set_local(&err_thread_local, NULL);
+ return NULL;
+ }
+
+ if (!ossl_init_thread_start(NULL, NULL, err_delete_thread_state)
+ || !CRYPTO_THREAD_set_local(&err_thread_local, state)) {
ERR_STATE_free(state);
+ CRYPTO_THREAD_set_local(&err_thread_local, NULL);
return NULL;
}
OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
}
+ set_sys_error(saveerrno);
return state;
}
+#ifndef OPENSSL_NO_DEPRECATED_3_0
+ERR_STATE *ERR_get_state(void)
+{
+ return ossl_err_get_state_int();
+}
+#endif
+
+
+/*
+ * err_shelve_state returns the current thread local error state
+ * and freezes the error module until err_unshelve_state is called.
+ */
+int err_shelve_state(void **state)
+{
+ int saveerrno = get_last_sys_error();
+
+ /*
+ * Note, at present our only caller is OPENSSL_init_crypto(), indirectly
+ * via ossl_init_load_crypto_nodelete(), by which point the requested
+ * "base" initialization has already been performed, so the below call is a
+ * NOOP, that re-enters OPENSSL_init_crypto() only to quickly return.
+ *
+ * If are no other valid callers of this function, the call below can be
+ * removed, avoiding the re-entry into OPENSSL_init_crypto(). If there are
+ * potential uses that are not from inside OPENSSL_init_crypto(), then this
+ * call is needed, but some care is required to make sure that the re-entry
+ * remains a NOOP.
+ */
+ if (!OPENSSL_init_crypto(OPENSSL_INIT_BASE_ONLY, NULL))
+ return 0;
+
+ if (!RUN_ONCE(&err_init, err_do_init))
+ return 0;
+
+ *state = CRYPTO_THREAD_get_local(&err_thread_local);
+ if (!CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)-1))
+ return 0;
+
+ set_sys_error(saveerrno);
+ return 1;
+}
+
+/*
+ * err_unshelve_state restores the error state that was returned
+ * by err_shelve_state previously.
+ */
+void err_unshelve_state(void* state)
+{
+ if (state != (void*)-1)
+ CRYPTO_THREAD_set_local(&err_thread_local, (ERR_STATE*)state);
+}
+
int ERR_get_next_error_library(void)
{
int ret;
- if (!RUN_ONCE(&err_string_init, do_err_strings_init)) {
+ if (!RUN_ONCE(&err_string_init, do_err_strings_init))
return 0;
- }
- CRYPTO_THREAD_write_lock(err_string_lock);
+ if (!CRYPTO_THREAD_write_lock(err_string_lock))
+ return 0;
ret = int_err_library_number++;
CRYPTO_THREAD_unlock(err_string_lock);
return ret;
}
-void ERR_set_error_data(char *data, int flags)
+static int err_set_error_data_int(char *data, size_t size, int flags,
+ int deallocate)
{
ERR_STATE *es;
- int i;
- es = ERR_get_state();
+ es = ossl_err_get_state_int();
if (es == NULL)
- return;
+ return 0;
- i = es->top;
+ err_clear_data(es, es->top, deallocate);
+ err_set_data(es, es->top, data, size, flags);
+
+ return 1;
+}
- err_clear_data(es, i);
- es->err_data[i] = data;
- es->err_data_flags[i] = flags;
+void ERR_set_error_data(char *data, int flags)
+{
+ /*
+ * This function is void so we cannot propagate the error return. Since it
+ * is also in the public API we can't change the return type.
+ *
+ * We estimate the size of the data. If it's not flagged as allocated,
+ * then this is safe, and if it is flagged as allocated, then our size
+ * may be smaller than the actual allocation, but that doesn't matter
+ * too much, the buffer will remain untouched or will eventually be
+ * reallocated to a new size.
+ *
+ * callers should be advised that this function takes over ownership of
+ * the allocated memory, i.e. they can't count on the pointer to remain
+ * valid.
+ */
+ err_set_error_data_int(data, strlen(data) + 1, flags, 1);
}
void ERR_add_error_data(int num, ...)
void ERR_add_error_vdata(int num, va_list args)
{
- int i, n, s;
- char *str, *p, *a;
+ int i, len, size;
+ int flags = ERR_TXT_MALLOCED | ERR_TXT_STRING;
+ char *str, *arg;
+ ERR_STATE *es;
- s = 80;
- str = OPENSSL_malloc(s + 1);
- if (str == NULL)
+ /* Get the current error data; if an allocated string get it. */
+ es = ossl_err_get_state_int();
+ if (es == NULL)
+ return;
+ i = es->top;
+
+ /*
+ * If err_data is allocated already, re-use the space.
+ * Otherwise, allocate a small new buffer.
+ */
+ if ((es->err_data_flags[i] & flags) == flags) {
+ str = es->err_data[i];
+ size = es->err_data_size[i];
+
+ /*
+ * To protect the string we just grabbed from tampering by other
+ * functions we may call, or to protect them from freeing a pointer
+ * that may no longer be valid at that point, we clear away the
+ * data pointer and the flags. We will set them again at the end
+ * of this function.
+ */
+ es->err_data[i] = NULL;
+ es->err_data_flags[i] = 0;
+ } else if ((str = OPENSSL_malloc(size = 81)) == NULL) {
return;
- str[0] = '\0';
-
- n = 0;
- for (i = 0; i < num; i++) {
- a = va_arg(args, char *);
- if (a == NULL)
- a = "<NULL>";
- n += strlen(a);
- if (n > s) {
- s = n + 20;
- p = OPENSSL_realloc(str, s + 1);
+ } else {
+ str[0] = '\0';
+ }
+ len = strlen(str);
+
+ while (--num >= 0) {
+ arg = va_arg(args, char *);
+ if (arg == NULL)
+ arg = "<NULL>";
+ len += strlen(arg);
+ if (len >= size) {
+ char *p;
+
+ size = len + 20;
+ p = OPENSSL_realloc(str, size);
if (p == NULL) {
OPENSSL_free(str);
return;
}
str = p;
}
- OPENSSL_strlcat(str, a, (size_t)s + 1);
+ OPENSSL_strlcat(str, arg, (size_t)size);
}
- ERR_set_error_data(str, ERR_TXT_MALLOCED | ERR_TXT_STRING);
+ if (!err_set_error_data_int(str, size, flags, 0))
+ OPENSSL_free(str);
}
-int ERR_set_mark(void)
-{
- ERR_STATE *es;
-
- es = ERR_get_state();
- if (es == NULL)
- return 0;
-
- if (es->bottom == es->top)
- return 0;
- es->err_flags[es->top] |= ERR_FLAG_MARK;
- return 1;
-}
-
-int ERR_pop_to_mark(void)
-{
- ERR_STATE *es;
-
- es = ERR_get_state();
- if (es == NULL)
- return 0;
-
- while (es->bottom != es->top
- && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) {
- err_clear(es, es->top);
- es->top = es->top > 0 ? es->top - 1 : ERR_NUM_ERRORS - 1;
- }
-
- if (es->bottom == es->top)
- return 0;
- es->err_flags[es->top] &= ~ERR_FLAG_MARK;
- return 1;
-}
-
-int ERR_clear_last_mark(void)
+void err_clear_last_constant_time(int clear)
{
ERR_STATE *es;
int top;
- es = ERR_get_state();
+ es = ossl_err_get_state_int();
if (es == NULL)
- return 0;
+ return;
top = es->top;
- while (es->bottom != top
- && (es->err_flags[top] & ERR_FLAG_MARK) == 0) {
- top = top > 0 ? top - 1 : ERR_NUM_ERRORS - 1;
- }
- if (es->bottom == top)
- return 0;
- es->err_flags[top] &= ~ERR_FLAG_MARK;
- return 1;
+ /*
+ * Flag error as cleared but remove it elsewhere to avoid two errors
+ * accessing the same error stack location, revealing timing information.
+ */
+ clear = constant_time_select_int(constant_time_eq_int(clear, 0),
+ 0, ERR_FLAG_CLEAR);
+ es->err_flags[top] |= clear;
}
projects / openssl.git / blobdiff