/*
- * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
#include <openssl/bio.h>
#include <openssl/opensslconf.h>
#include "internal/thread_once.h"
+#include "internal/ctype.h"
+#include "internal/constant_time_locl.h"
+#include "e_os.h"
static int err_load_strings(const ERR_STRING_DATA *str);
{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"},
{0, NULL},
};
{ERR_PACK(0, SYS_F_IOCTL, 0), "ioctl"},
{ERR_PACK(0, SYS_F_STAT, 0), "stat"},
{ERR_PACK(0, SYS_F_FCNTL, 0), "fcntl"},
+ {ERR_PACK(0, SYS_F_FSTAT, 0), "fstat"},
{0, NULL},
};
}
#ifndef OPENSSL_NO_ERR
+/* A measurement on Linux 2018-11-21 showed about 3.5kib */
+# define SPACE_SYS_STR_REASONS 4 * 1024
# define NUM_SYS_STR_REASONS 127
-# define LEN_SYS_STR_REASON 32
static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1];
/*
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 char strerror_pool[SPACE_SYS_STR_REASONS];
+ char *cur = strerror_pool;
+ size_t cnt = 0;
static int init = 1;
int i;
+ int saveerrno = get_last_sys_error();
CRYPTO_THREAD_write_lock(err_string_lock);
if (!init) {
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 (openssl_strerror_r(i, cur, sizeof(strerror_pool) - cnt)) {
+ size_t l = strlen(cur);
+
+ str->string = cur;
+ cnt += l;
+ if (cnt > sizeof(strerror_pool))
+ cnt = sizeof(strerror_pool);
+ cur += l;
+
+ /*
+ * VMS has an unusual quirk of adding spaces at the end of
+ * some (most? all?) messages. Lets trim them off.
+ */
+ while (ossl_isspace(cur[-1])) {
+ cur--;
+ cnt--;
+ }
+ *cur++ = '\0';
+ cnt++;
+ }
}
if (str->string == NULL)
str->string = "unknown";
init = 0;
CRYPTO_THREAD_unlock(err_string_lock);
+ /* openssl_strerror_r could change errno, but we want to preserve it */
+ set_sys_error(saveerrno);
err_load_strings(SYS_str_reasons);
}
#endif
-#define err_clear_data(p,i) \
+#define err_clear_data(p, i) \
do { \
- if ((p)->err_data_flags[i] & ERR_TXT_MALLOCED) \
- { \
+ 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)
+ (p)->err_data[i] = NULL; \
+ } \
+ (p)->err_data_flags[i] = 0; \
+ } while (0)
-#define err_clear(p,i) \
+#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)
+ err_clear_data(p, i); \
+ (p)->err_flags[i] = 0; \
+ (p)->err_buffer[i] = 0; \
+ (p)->err_file[i] = NULL; \
+ (p)->err_line[i] = -1; \
+ } while (0)
static void ERR_STATE_free(ERR_STATE *s)
{
if (s == NULL)
return;
-
for (i = 0; i < ERR_NUM_ERRORS; i++) {
err_clear_data(s, i);
}
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(0, 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)
ERR_STATE *ERR_get_state(void)
{
- ERR_STATE *state = NULL;
+ ERR_STATE *state;
+ int saveerrno = get_last_sys_error();
- if (!RUN_ONCE(&err_init, err_do_init))
+ if (!OPENSSL_init_crypto(OPENSSL_INIT_BASE_ONLY, NULL))
return NULL;
- /*
- * If base OPENSSL_init_crypto() hasn't been called yet, be sure to call
- * it now to avoid state to be doubly allocated and thereby leak memory.
- * Needed on any platform that doesn't define OPENSSL_USE_NODELETE.
- */
- if (!OPENSSL_init_crypto(0, 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 ((state = OPENSSL_zalloc(sizeof(*state))) == NULL) {
+ CRYPTO_THREAD_set_local(&err_thread_local, NULL);
+ return NULL;
+ }
+
if (!ossl_init_thread_start(OPENSSL_INIT_THREAD_ERR_STATE)
- || !CRYPTO_THREAD_set_local(&err_thread_local, 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;
}
+/*
+ * 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);
ret = int_err_library_number++;
return ret;
}
-void ERR_set_error_data(char *data, int flags)
+static int err_set_error_data_int(char *data, int flags)
{
ERR_STATE *es;
int i;
es = ERR_get_state();
if (es == NULL)
- return;
+ return 0;
i = es->top;
err_clear_data(es, i);
es->err_data[i] = data;
es->err_data_flags[i] = flags;
+
+ return 1;
+}
+
+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.
+ */
+ err_set_error_data_int(data, flags);
}
void ERR_add_error_data(int num, ...)
char *str, *p, *a;
s = 80;
- str = OPENSSL_malloc(s + 1);
- if (str == NULL)
+ if ((str = OPENSSL_malloc(s + 1)) == NULL) {
+ /* ERRerr(ERR_F_ERR_ADD_ERROR_VDATA, ERR_R_MALLOC_FAILURE); */
return;
+ }
str[0] = '\0';
n = 0;
}
OPENSSL_strlcat(str, a, (size_t)s + 1);
}
- ERR_set_error_data(str, ERR_TXT_MALLOCED | ERR_TXT_STRING);
+ if (!err_set_error_data_int(str, ERR_TXT_MALLOCED | ERR_TXT_STRING))
+ OPENSSL_free(str);
}
int ERR_set_mark(void)
es->err_flags[top] &= ~ERR_FLAG_MARK;
return 1;
}
+
+#ifdef UINTPTR_T
+# undef UINTPTR_T
+#endif
+/*
+ * uintptr_t is the answer, but unfortunately C89, current "least common
+ * denominator" doesn't define it. Most legacy platforms typedef it anyway,
+ * so that attempt to fill the gaps means that one would have to identify
+ * that track these gaps, which would be undesirable. Macro it is...
+ */
+#if defined(__VMS) && __INITIAL_POINTER_SIZE==64
+/*
+ * But we can't use size_t on VMS, because it adheres to sizeof(size_t)==4
+ * even in 64-bit builds, which means that it won't work as mask.
+ */
+# define UINTPTR_T unsigned long long
+#else
+# define UINTPTR_T size_t
+#endif
+
+void err_clear_last_constant_time(int clear)
+{
+ ERR_STATE *es;
+ int top;
+
+ es = ERR_get_state();
+ if (es == NULL)
+ return;
+
+ top = es->top;
+
+ es->err_flags[top] &= ~(0 - clear);
+ es->err_buffer[top] &= ~(0UL - clear);
+ es->err_file[top] = (const char *)((UINTPTR_T)es->err_file[top] &
+ ~((UINTPTR_T)0 - clear));
+ es->err_line[top] |= 0 - clear;
+
+ es->top = (top + ERR_NUM_ERRORS - clear) % ERR_NUM_ERRORS;
+}
projects / openssl.git / blobdiff