--- /dev/null
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ * software must display the following acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission. For written permission, please contact
+ * openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ * nor may "OpenSSL" appear in their names without prior written
+ * permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com). This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com). */
+
+#include <openssl/err.h>
+
+#include <assert.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <string.h>
+
+#if defined(OPENSSL_WINDOWS)
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <windows.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+#endif
+
+#include <openssl/mem.h>
+#include <openssl/thread.h>
+
+#include "../internal.h"
+#include "./internal.h"
+
+
+struct err_error_st {
+ // file contains the filename where the error occurred.
+ const char *file;
+ // data contains a NUL-terminated string with optional data. It must be freed
+ // with |OPENSSL_free|.
+ char *data;
+ // packed contains the error library and reason, as packed by ERR_PACK.
+ uint32_t packed;
+ // line contains the line number where the error occurred.
+ uint16_t line;
+ // mark indicates a reversion point in the queue. See |ERR_pop_to_mark|.
+ unsigned mark : 1;
+};
+
+// ERR_STATE contains the per-thread, error queue.
+typedef struct err_state_st {
+ // errors contains the ERR_NUM_ERRORS most recent errors, organised as a ring
+ // buffer.
+ struct err_error_st errors[ERR_NUM_ERRORS];
+ // top contains the index one past the most recent error. If |top| equals
+ // |bottom| then the queue is empty.
+ unsigned top;
+ // bottom contains the index of the last error in the queue.
+ unsigned bottom;
+
+ // to_free, if not NULL, contains a pointer owned by this structure that was
+ // previously a |data| pointer of one of the elements of |errors|.
+ void *to_free;
+} ERR_STATE;
+
+extern const uint32_t kOpenSSLReasonValues[];
+extern const size_t kOpenSSLReasonValuesLen;
+extern const char kOpenSSLReasonStringData[];
+
+// err_clear clears the given queued error.
+static void err_clear(struct err_error_st *error) {
+ OPENSSL_free(error->data);
+ OPENSSL_memset(error, 0, sizeof(struct err_error_st));
+}
+
+static void err_copy(struct err_error_st *dst, const struct err_error_st *src) {
+ err_clear(dst);
+ dst->file = src->file;
+ if (src->data != NULL) {
+ dst->data = OPENSSL_strdup(src->data);
+ }
+ dst->packed = src->packed;
+ dst->line = src->line;
+}
+
+// global_next_library contains the next custom library value to return.
+static int global_next_library = ERR_NUM_LIBS;
+
+// global_next_library_mutex protects |global_next_library| from concurrent
+// updates.
+static struct CRYPTO_STATIC_MUTEX global_next_library_mutex =
+ CRYPTO_STATIC_MUTEX_INIT;
+
+static void err_state_free(void *statep) {
+ ERR_STATE *state = statep;
+
+ if (state == NULL) {
+ return;
+ }
+
+ for (unsigned i = 0; i < ERR_NUM_ERRORS; i++) {
+ err_clear(&state->errors[i]);
+ }
+ OPENSSL_free(state->to_free);
+ OPENSSL_free(state);
+}
+
+// err_get_state gets the ERR_STATE object for the current thread.
+static ERR_STATE *err_get_state(void) {
+ ERR_STATE *state = CRYPTO_get_thread_local(OPENSSL_THREAD_LOCAL_ERR);
+ if (state == NULL) {
+ state = OPENSSL_malloc(sizeof(ERR_STATE));
+ if (state == NULL) {
+ return NULL;
+ }
+ OPENSSL_memset(state, 0, sizeof(ERR_STATE));
+ if (!CRYPTO_set_thread_local(OPENSSL_THREAD_LOCAL_ERR, state,
+ err_state_free)) {
+ return NULL;
+ }
+ }
+
+ return state;
+}
+
+static uint32_t get_error_values(int inc, int top, const char **file, int *line,
+ const char **data, int *flags) {
+ unsigned i = 0;
+ ERR_STATE *state;
+ struct err_error_st *error;
+ uint32_t ret;
+
+ state = err_get_state();
+ if (state == NULL || state->bottom == state->top) {
+ return 0;
+ }
+
+ if (top) {
+ assert(!inc);
+ // last error
+ i = state->top;
+ } else {
+ i = (state->bottom + 1) % ERR_NUM_ERRORS;
+ }
+
+ error = &state->errors[i];
+ ret = error->packed;
+
+ if (file != NULL && line != NULL) {
+ if (error->file == NULL) {
+ *file = "NA";
+ *line = 0;
+ } else {
+ *file = error->file;
+ *line = error->line;
+ }
+ }
+
+ if (data != NULL) {
+ if (error->data == NULL) {
+ *data = "";
+ if (flags != NULL) {
+ *flags = 0;
+ }
+ } else {
+ *data = error->data;
+ if (flags != NULL) {
+ *flags = ERR_FLAG_STRING;
+ }
+ // If this error is being removed, take ownership of data from
+ // the error. The semantics are such that the caller doesn't
+ // take ownership either. Instead the error system takes
+ // ownership and retains it until the next call that affects the
+ // error queue.
+ if (inc) {
+ if (error->data != NULL) {
+ OPENSSL_free(state->to_free);
+ state->to_free = error->data;
+ }
+ error->data = NULL;
+ }
+ }
+ }
+
+ if (inc) {
+ assert(!top);
+ err_clear(error);
+ state->bottom = i;
+ }
+
+ return ret;
+}
+
+uint32_t ERR_get_error(void) {
+ return get_error_values(1 /* inc */, 0 /* bottom */, NULL, NULL, NULL, NULL);
+}
+
+uint32_t ERR_get_error_line(const char **file, int *line) {
+ return get_error_values(1 /* inc */, 0 /* bottom */, file, line, NULL, NULL);
+}
+
+uint32_t ERR_get_error_line_data(const char **file, int *line,
+ const char **data, int *flags) {
+ return get_error_values(1 /* inc */, 0 /* bottom */, file, line, data, flags);
+}
+
+uint32_t ERR_peek_error(void) {
+ return get_error_values(0 /* peek */, 0 /* bottom */, NULL, NULL, NULL, NULL);
+}
+
+uint32_t ERR_peek_error_line(const char **file, int *line) {
+ return get_error_values(0 /* peek */, 0 /* bottom */, file, line, NULL, NULL);
+}
+
+uint32_t ERR_peek_error_line_data(const char **file, int *line,
+ const char **data, int *flags) {
+ return get_error_values(0 /* peek */, 0 /* bottom */, file, line, data,
+ flags);
+}
+
+uint32_t ERR_peek_last_error(void) {
+ return get_error_values(0 /* peek */, 1 /* top */, NULL, NULL, NULL, NULL);
+}
+
+uint32_t ERR_peek_last_error_line(const char **file, int *line) {
+ return get_error_values(0 /* peek */, 1 /* top */, file, line, NULL, NULL);
+}
+
+uint32_t ERR_peek_last_error_line_data(const char **file, int *line,
+ const char **data, int *flags) {
+ return get_error_values(0 /* peek */, 1 /* top */, file, line, data, flags);
+}
+
+void ERR_clear_error(void) {
+ ERR_STATE *const state = err_get_state();
+ unsigned i;
+
+ if (state == NULL) {
+ return;
+ }
+
+ for (i = 0; i < ERR_NUM_ERRORS; i++) {
+ err_clear(&state->errors[i]);
+ }
+ OPENSSL_free(state->to_free);
+ state->to_free = NULL;
+
+ state->top = state->bottom = 0;
+}
+
+void ERR_remove_thread_state(const CRYPTO_THREADID *tid) {
+ if (tid != NULL) {
+ assert(0);
+ return;
+ }
+
+ ERR_clear_error();
+}
+
+int ERR_get_next_error_library(void) {
+ int ret;
+
+ CRYPTO_STATIC_MUTEX_lock_write(&global_next_library_mutex);
+ ret = global_next_library++;
+ CRYPTO_STATIC_MUTEX_unlock_write(&global_next_library_mutex);
+
+ return ret;
+}
+
+void ERR_remove_state(unsigned long pid) {
+ ERR_clear_error();
+}
+
+void ERR_clear_system_error(void) {
+ errno = 0;
+}
+
+char *ERR_error_string(uint32_t packed_error, char *ret) {
+ static char buf[ERR_ERROR_STRING_BUF_LEN];
+
+ if (ret == NULL) {
+ // TODO(fork): remove this.
+ ret = buf;
+ }
+
+#if !defined(NDEBUG)
+ // This is aimed to help catch callers who don't provide
+ // |ERR_ERROR_STRING_BUF_LEN| bytes of space.
+ OPENSSL_memset(ret, 0, ERR_ERROR_STRING_BUF_LEN);
+#endif
+
+ ERR_error_string_n(packed_error, ret, ERR_ERROR_STRING_BUF_LEN);
+
+ return ret;
+}
+
+void ERR_error_string_n(uint32_t packed_error, char *buf, size_t len) {
+ char lib_buf[64], reason_buf[64];
+ const char *lib_str, *reason_str;
+ unsigned lib, reason;
+
+ if (len == 0) {
+ return;
+ }
+
+ lib = ERR_GET_LIB(packed_error);
+ reason = ERR_GET_REASON(packed_error);
+
+ lib_str = ERR_lib_error_string(packed_error);
+ reason_str = ERR_reason_error_string(packed_error);
+
+ if (lib_str == NULL) {
+ BIO_snprintf(lib_buf, sizeof(lib_buf), "lib(%u)", lib);
+ lib_str = lib_buf;
+ }
+
+ if (reason_str == NULL) {
+ BIO_snprintf(reason_buf, sizeof(reason_buf), "reason(%u)", reason);
+ reason_str = reason_buf;
+ }
+
+ BIO_snprintf(buf, len, "error:%08" PRIx32 ":%s:OPENSSL_internal:%s",
+ packed_error, lib_str, reason_str);
+
+ if (strlen(buf) == len - 1) {
+ // output may be truncated; make sure we always have 5 colon-separated
+ // fields, i.e. 4 colons.
+ static const unsigned num_colons = 4;
+ unsigned i;
+ char *s = buf;
+
+ if (len <= num_colons) {
+ // In this situation it's not possible to ensure that the correct number
+ // of colons are included in the output.
+ return;
+ }
+
+ for (i = 0; i < num_colons; i++) {
+ char *colon = strchr(s, ':');
+ char *last_pos = &buf[len - 1] - num_colons + i;
+
+ if (colon == NULL || colon > last_pos) {
+ // set colon |i| at last possible position (buf[len-1] is the
+ // terminating 0). If we're setting this colon, then all whole of the
+ // rest of the string must be colons in order to have the correct
+ // number.
+ OPENSSL_memset(last_pos, ':', num_colons - i);
+ break;
+ }
+
+ s = colon + 1;
+ }
+ }
+}
+
+// err_string_cmp is a compare function for searching error values with
+// |bsearch| in |err_string_lookup|.
+static int err_string_cmp(const void *a, const void *b) {
+ const uint32_t a_key = *((const uint32_t*) a) >> 15;
+ const uint32_t b_key = *((const uint32_t*) b) >> 15;
+
+ if (a_key < b_key) {
+ return -1;
+ } else if (a_key > b_key) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+// err_string_lookup looks up the string associated with |lib| and |key| in
+// |values| and |string_data|. It returns the string or NULL if not found.
+static const char *err_string_lookup(uint32_t lib, uint32_t key,
+ const uint32_t *values,
+ size_t num_values,
+ const char *string_data) {
+ // |values| points to data in err_data.h, which is generated by
+ // err_data_generate.go. It's an array of uint32_t values. Each value has the
+ // following structure:
+ // | lib | key | offset |
+ // |6 bits| 11 bits | 15 bits |
+ //
+ // The |lib| value is a library identifier: one of the |ERR_LIB_*| values.
+ // The |key| is a reason code, depending on the context.
+ // The |offset| is the number of bytes from the start of |string_data| where
+ // the (NUL terminated) string for this value can be found.
+ //
+ // Values are sorted based on treating the |lib| and |key| part as an
+ // unsigned integer.
+ if (lib >= (1 << 6) || key >= (1 << 11)) {
+ return NULL;
+ }
+ uint32_t search_key = lib << 26 | key << 15;
+ const uint32_t *result = bsearch(&search_key, values, num_values,
+ sizeof(uint32_t), err_string_cmp);
+ if (result == NULL) {
+ return NULL;
+ }
+
+ return &string_data[(*result) & 0x7fff];
+}
+
+static const char *const kLibraryNames[ERR_NUM_LIBS] = {
+ "invalid library (0)",
+ "unknown library", // ERR_LIB_NONE
+ "system library", // ERR_LIB_SYS
+ "bignum routines", // ERR_LIB_BN
+ "RSA routines", // ERR_LIB_RSA
+ "Diffie-Hellman routines", // ERR_LIB_DH
+ "public key routines", // ERR_LIB_EVP
+ "memory buffer routines", // ERR_LIB_BUF
+ "object identifier routines", // ERR_LIB_OBJ
+ "PEM routines", // ERR_LIB_PEM
+ "DSA routines", // ERR_LIB_DSA
+ "X.509 certificate routines", // ERR_LIB_X509
+ "ASN.1 encoding routines", // ERR_LIB_ASN1
+ "configuration file routines", // ERR_LIB_CONF
+ "common libcrypto routines", // ERR_LIB_CRYPTO
+ "elliptic curve routines", // ERR_LIB_EC
+ "SSL routines", // ERR_LIB_SSL
+ "BIO routines", // ERR_LIB_BIO
+ "PKCS7 routines", // ERR_LIB_PKCS7
+ "PKCS8 routines", // ERR_LIB_PKCS8
+ "X509 V3 routines", // ERR_LIB_X509V3
+ "random number generator", // ERR_LIB_RAND
+ "ENGINE routines", // ERR_LIB_ENGINE
+ "OCSP routines", // ERR_LIB_OCSP
+ "UI routines", // ERR_LIB_UI
+ "COMP routines", // ERR_LIB_COMP
+ "ECDSA routines", // ERR_LIB_ECDSA
+ "ECDH routines", // ERR_LIB_ECDH
+ "HMAC routines", // ERR_LIB_HMAC
+ "Digest functions", // ERR_LIB_DIGEST
+ "Cipher functions", // ERR_LIB_CIPHER
+ "HKDF functions", // ERR_LIB_HKDF
+ "User defined functions", // ERR_LIB_USER
+};
+
+const char *ERR_lib_error_string(uint32_t packed_error) {
+ const uint32_t lib = ERR_GET_LIB(packed_error);
+
+ if (lib >= ERR_NUM_LIBS) {
+ return NULL;
+ }
+ return kLibraryNames[lib];
+}
+
+const char *ERR_func_error_string(uint32_t packed_error) {
+ return "OPENSSL_internal";
+}
+
+const char *ERR_reason_error_string(uint32_t packed_error) {
+ const uint32_t lib = ERR_GET_LIB(packed_error);
+ const uint32_t reason = ERR_GET_REASON(packed_error);
+
+ if (lib == ERR_LIB_SYS) {
+ if (reason < 127) {
+ return strerror(reason);
+ }
+ return NULL;
+ }
+
+ if (reason < ERR_NUM_LIBS) {
+ return kLibraryNames[reason];
+ }
+
+ if (reason < 100) {
+ switch (reason) {
+ case ERR_R_MALLOC_FAILURE:
+ return "malloc failure";
+ case ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED:
+ return "function should not have been called";
+ case ERR_R_PASSED_NULL_PARAMETER:
+ return "passed a null parameter";
+ case ERR_R_INTERNAL_ERROR:
+ return "internal error";
+ case ERR_R_OVERFLOW:
+ return "overflow";
+ default:
+ return NULL;
+ }
+ }
+
+ return err_string_lookup(lib, reason, kOpenSSLReasonValues,
+ kOpenSSLReasonValuesLen, kOpenSSLReasonStringData);
+}
+
+void ERR_print_errors_cb(ERR_print_errors_callback_t callback, void *ctx) {
+ char buf[ERR_ERROR_STRING_BUF_LEN];
+ char buf2[1024];
+ const char *file, *data;
+ int line, flags;
+ uint32_t packed_error;
+
+ // thread_hash is the least-significant bits of the |ERR_STATE| pointer value
+ // for this thread.
+ const unsigned long thread_hash = (uintptr_t) err_get_state();
+
+ for (;;) {
+ packed_error = ERR_get_error_line_data(&file, &line, &data, &flags);
+ if (packed_error == 0) {
+ break;
+ }
+
+ ERR_error_string_n(packed_error, buf, sizeof(buf));
+ BIO_snprintf(buf2, sizeof(buf2), "%lu:%s:%s:%d:%s\n", thread_hash, buf,
+ file, line, (flags & ERR_FLAG_STRING) ? data : "");
+ if (callback(buf2, strlen(buf2), ctx) <= 0) {
+ break;
+ }
+ }
+}
+
+static int print_errors_to_file(const char* msg, size_t msg_len, void* ctx) {
+ assert(msg[msg_len] == '\0');
+ FILE* fp = ctx;
+ int res = fputs(msg, fp);
+ return res < 0 ? 0 : 1;
+}
+
+void ERR_print_errors_fp(FILE *file) {
+ ERR_print_errors_cb(print_errors_to_file, file);
+}
+
+// err_set_error_data sets the data on the most recent error.
+static void err_set_error_data(char *data) {
+ ERR_STATE *const state = err_get_state();
+ struct err_error_st *error;
+
+ if (state == NULL || state->top == state->bottom) {
+ OPENSSL_free(data);
+ return;
+ }
+
+ error = &state->errors[state->top];
+
+ OPENSSL_free(error->data);
+ error->data = data;
+}
+
+void ERR_put_error(int library, int unused, int reason, const char *file,
+ unsigned line) {
+ ERR_STATE *const state = err_get_state();
+ struct err_error_st *error;
+
+ if (state == NULL) {
+ return;
+ }
+
+ if (library == ERR_LIB_SYS && reason == 0) {
+#if defined(OPENSSL_WINDOWS)
+ reason = GetLastError();
+#else
+ reason = errno;
+#endif
+ }
+
+ state->top = (state->top + 1) % ERR_NUM_ERRORS;
+ if (state->top == state->bottom) {
+ state->bottom = (state->bottom + 1) % ERR_NUM_ERRORS;
+ }
+
+ error = &state->errors[state->top];
+ err_clear(error);
+ error->file = file;
+ error->line = line;
+ error->packed = ERR_PACK(library, reason);
+}
+
+// ERR_add_error_data_vdata takes a variable number of const char* pointers,
+// concatenates them and sets the result as the data on the most recent
+// error.
+static void err_add_error_vdata(unsigned num, va_list args) {
+ size_t alloced, new_len, len = 0, substr_len;
+ char *buf;
+ const char *substr;
+ unsigned i;
+
+ alloced = 80;
+ buf = OPENSSL_malloc(alloced + 1);
+ if (buf == NULL) {
+ return;
+ }
+
+ for (i = 0; i < num; i++) {
+ substr = va_arg(args, const char *);
+ if (substr == NULL) {
+ continue;
+ }
+
+ substr_len = strlen(substr);
+ new_len = len + substr_len;
+ if (new_len > alloced) {
+ char *new_buf;
+
+ if (alloced + 20 + 1 < alloced) {
+ // overflow.
+ OPENSSL_free(buf);
+ return;
+ }
+
+ alloced = new_len + 20;
+ new_buf = OPENSSL_realloc(buf, alloced + 1);
+ if (new_buf == NULL) {
+ OPENSSL_free(buf);
+ return;
+ }
+ buf = new_buf;
+ }
+
+ OPENSSL_memcpy(buf + len, substr, substr_len);
+ len = new_len;
+ }
+
+ buf[len] = 0;
+ err_set_error_data(buf);
+}
+
+void ERR_add_error_data(unsigned count, ...) {
+ va_list args;
+ va_start(args, count);
+ err_add_error_vdata(count, args);
+ va_end(args);
+}
+
+void ERR_add_error_dataf(const char *format, ...) {
+ va_list ap;
+ char *buf;
+ static const unsigned buf_len = 256;
+
+ // A fixed-size buffer is used because va_copy (which would be needed in
+ // order to call vsnprintf twice and measure the buffer) wasn't defined until
+ // C99.
+ buf = OPENSSL_malloc(buf_len + 1);
+ if (buf == NULL) {
+ return;
+ }
+
+ va_start(ap, format);
+ BIO_vsnprintf(buf, buf_len, format, ap);
+ buf[buf_len] = 0;
+ va_end(ap);
+
+ err_set_error_data(buf);
+}
+
+int ERR_set_mark(void) {
+ ERR_STATE *const state = err_get_state();
+
+ if (state == NULL || state->bottom == state->top) {
+ return 0;
+ }
+ state->errors[state->top].mark = 1;
+ return 1;
+}
+
+int ERR_pop_to_mark(void) {
+ ERR_STATE *const state = err_get_state();
+
+ if (state == NULL) {
+ return 0;
+ }
+
+ while (state->bottom != state->top) {
+ struct err_error_st *error = &state->errors[state->top];
+
+ if (error->mark) {
+ error->mark = 0;
+ return 1;
+ }
+
+ err_clear(error);
+ if (state->top == 0) {
+ state->top = ERR_NUM_ERRORS - 1;
+ } else {
+ state->top--;
+ }
+ }
+
+ return 0;
+}
+
+void ERR_load_crypto_strings(void) {}
+
+void ERR_free_strings(void) {}
+
+void ERR_load_BIO_strings(void) {}
+
+void ERR_load_ERR_strings(void) {}
+
+struct err_save_state_st {
+ struct err_error_st *errors;
+ size_t num_errors;
+};
+
+void ERR_SAVE_STATE_free(ERR_SAVE_STATE *state) {
+ if (state == NULL) {
+ return;
+ }
+ for (size_t i = 0; i < state->num_errors; i++) {
+ err_clear(&state->errors[i]);
+ }
+ OPENSSL_free(state->errors);
+ OPENSSL_free(state);
+}
+
+ERR_SAVE_STATE *ERR_save_state(void) {
+ ERR_STATE *const state = err_get_state();
+ if (state == NULL || state->top == state->bottom) {
+ return NULL;
+ }
+
+ ERR_SAVE_STATE *ret = OPENSSL_malloc(sizeof(ERR_SAVE_STATE));
+ if (ret == NULL) {
+ return NULL;
+ }
+
+ // Errors are stored in the range (bottom, top].
+ size_t num_errors = state->top >= state->bottom
+ ? state->top - state->bottom
+ : ERR_NUM_ERRORS + state->top - state->bottom;
+ assert(num_errors < ERR_NUM_ERRORS);
+ ret->errors = OPENSSL_malloc(num_errors * sizeof(struct err_error_st));
+ if (ret->errors == NULL) {
+ OPENSSL_free(ret);
+ return NULL;
+ }
+ OPENSSL_memset(ret->errors, 0, num_errors * sizeof(struct err_error_st));
+ ret->num_errors = num_errors;
+
+ for (size_t i = 0; i < num_errors; i++) {
+ size_t j = (state->bottom + i + 1) % ERR_NUM_ERRORS;
+ err_copy(&ret->errors[i], &state->errors[j]);
+ }
+ return ret;
+}
+
+void ERR_restore_state(const ERR_SAVE_STATE *state) {
+ if (state == NULL || state->num_errors == 0) {
+ ERR_clear_error();
+ return;
+ }
+
+ ERR_STATE *const dst = err_get_state();
+ if (dst == NULL) {
+ return;
+ }
+
+ for (size_t i = 0; i < state->num_errors; i++) {
+ err_copy(&dst->errors[i], &state->errors[i]);
+ }
+ dst->top = state->num_errors - 1;
+ dst->bottom = ERR_NUM_ERRORS - 1;
+}
git://repos.xcallymotion.com / motion2.git / blobdiff