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nginx-unit/src/nxt_openssl.c
Valentin Bartenev 8d844bc2aa Controller: certificates storage interface.
2018-09-20 15:27:08 +03:00

1071 lines
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/*
* Copyright (C) Igor Sysoev
* Copyright (C) NGINX, Inc.
*/
#include <nxt_main.h>
#include <openssl/ssl.h>
#include <openssl/conf.h>
#include <openssl/err.h>
typedef struct {
SSL *session;
nxt_conn_t *conn;
int ssl_error;
uint8_t times; /* 2 bits */
uint8_t handshake; /* 1 bit */
nxt_buf_mem_t buffer;
} nxt_openssl_conn_t;
typedef enum {
NXT_OPENSSL_HANDSHAKE = 0,
NXT_OPENSSL_READ,
NXT_OPENSSL_WRITE,
NXT_OPENSSL_SHUTDOWN,
} nxt_openssl_io_t;
static nxt_int_t nxt_openssl_library_init(nxt_task_t *task);
static void nxt_openssl_library_free(nxt_task_t *task);
#if OPENSSL_VERSION_NUMBER < 0x10100004L
static nxt_int_t nxt_openssl_locks_init(void);
static void nxt_openssl_lock(int mode, int type, const char *file, int line);
static unsigned long nxt_openssl_thread_id(void);
static void nxt_openssl_locks_free(void);
#endif
static nxt_int_t nxt_openssl_server_init(nxt_task_t *task,
nxt_tls_conf_t *conf);
static nxt_uint_t nxt_openssl_chain_file(SSL_CTX *ctx, nxt_fd_t fd);
static void nxt_openssl_server_free(nxt_task_t *task, nxt_tls_conf_t *conf);
static void nxt_openssl_conn_init(nxt_task_t *task, nxt_tls_conf_t *conf,
nxt_conn_t *c);
static void nxt_openssl_conn_handshake(nxt_task_t *task, void *obj, void *data);
static ssize_t nxt_openssl_conn_io_recvbuf(nxt_conn_t *c, nxt_buf_t *b);
static ssize_t nxt_openssl_conn_io_sendbuf(nxt_task_t *task, nxt_sendbuf_t *sb);
static ssize_t nxt_openssl_conn_io_send(nxt_task_t *task, nxt_sendbuf_t *sb,
void *buf, size_t size);
static void nxt_openssl_conn_io_shutdown(nxt_task_t *task, void *obj,
void *data);
static nxt_int_t nxt_openssl_conn_test_error(nxt_task_t *task, nxt_conn_t *c,
int ret, nxt_err_t sys_err, nxt_openssl_io_t io);
static void nxt_cdecl nxt_openssl_conn_error(nxt_task_t *task,
nxt_err_t err, const char *fmt, ...);
static nxt_uint_t nxt_openssl_log_error_level(nxt_err_t err);
const nxt_tls_lib_t nxt_openssl_lib = {
.library_init = nxt_openssl_library_init,
.library_free = nxt_openssl_library_free,
.server_init = nxt_openssl_server_init,
.server_free = nxt_openssl_server_free,
};
static nxt_conn_io_t nxt_openssl_conn_io = {
.read = nxt_conn_io_read,
.recvbuf = nxt_openssl_conn_io_recvbuf,
.write = nxt_conn_io_write,
.sendbuf = nxt_openssl_conn_io_sendbuf,
.shutdown = nxt_openssl_conn_io_shutdown,
};
static long nxt_openssl_version;
static int nxt_openssl_connection_index;
static nxt_int_t
nxt_openssl_library_init(nxt_task_t *task)
{
int index;
if (nxt_fast_path(nxt_openssl_version != 0)) {
return NXT_OK;
}
#if OPENSSL_VERSION_NUMBER >= 0x10100003L
OPENSSL_init_ssl(OPENSSL_INIT_LOAD_CONFIG, NULL);
#else
{
nxt_int_t ret;
SSL_load_error_strings();
OPENSSL_config(NULL);
/*
* SSL_library_init(3):
*
* SSL_library_init() always returns "1",
* so it is safe to discard the return value.
*/
(void) SSL_library_init();
ret = nxt_openssl_locks_init();
if (nxt_slow_path(ret != NXT_OK)) {
return ret;
}
}
#endif
nxt_openssl_version = SSLeay();
nxt_log(task, NXT_LOG_INFO, "%s, %xl",
SSLeay_version(SSLEAY_VERSION), nxt_openssl_version);
#ifndef SSL_OP_NO_COMPRESSION
{
/*
* Disable gzip compression in OpenSSL prior to 1.0.0
* version, this saves about 522K per connection.
*/
int n;
STACK_OF(SSL_COMP) *ssl_comp_methods;
ssl_comp_methods = SSL_COMP_get_compression_methods();
for (n = sk_SSL_COMP_num(ssl_comp_methods); n != 0; n--) {
(void) sk_SSL_COMP_pop(ssl_comp_methods);
}
}
#endif
index = SSL_get_ex_new_index(0, NULL, NULL, NULL, NULL);
if (index == -1) {
nxt_openssl_log_error(task, NXT_LOG_ALERT,
"SSL_get_ex_new_index() failed");
return NXT_ERROR;
}
nxt_openssl_connection_index = index;
return NXT_OK;
}
#if OPENSSL_VERSION_NUMBER >= 0x10100003L
static void
nxt_openssl_library_free(nxt_task_t *task)
{
}
#else
static nxt_thread_mutex_t *nxt_openssl_locks;
static nxt_int_t
nxt_openssl_locks_init(void)
{
int i, n;
nxt_int_t ret;
n = CRYPTO_num_locks();
nxt_openssl_locks = OPENSSL_malloc(n * sizeof(nxt_thread_mutex_t));
if (nxt_slow_path(nxt_openssl_locks == NULL)) {
return NXT_ERROR;
}
for (i = 0; i < n; i++) {
ret = nxt_thread_mutex_create(&nxt_openssl_locks[i]);
if (nxt_slow_path(ret != NXT_OK)) {
return ret;
}
}
CRYPTO_set_locking_callback(nxt_openssl_lock);
CRYPTO_set_id_callback(nxt_openssl_thread_id);
return NXT_OK;
}
static void
nxt_openssl_lock(int mode, int type, const char *file, int line)
{
nxt_thread_mutex_t *lock;
lock = &nxt_openssl_locks[type];
if ((mode & CRYPTO_LOCK) != 0) {
(void) nxt_thread_mutex_lock(lock);
} else {
(void) nxt_thread_mutex_unlock(lock);
}
}
static u_long
nxt_openssl_thread_id(void)
{
return (u_long) nxt_thread_handle();
}
static void
nxt_openssl_library_free(nxt_task_t *task)
{
nxt_openssl_locks_free();
}
static void
nxt_openssl_locks_free(void)
{
int i, n;
n = CRYPTO_num_locks();
CRYPTO_set_locking_callback(NULL);
for (i = 0; i < n; i++) {
nxt_thread_mutex_destroy(&nxt_openssl_locks[i]);
}
OPENSSL_free(nxt_openssl_locks);
}
#endif
static nxt_int_t
nxt_openssl_server_init(nxt_task_t *task, nxt_tls_conf_t *conf)
{
SSL_CTX *ctx;
nxt_fd_t fd;
const char *ciphers, *ca_certificate;
STACK_OF(X509_NAME) *list;
ctx = SSL_CTX_new(SSLv23_server_method());
if (ctx == NULL) {
nxt_openssl_log_error(task, NXT_LOG_ALERT, "SSL_CTX_new() failed");
return NXT_ERROR;
}
conf->ctx = ctx;
conf->conn_init = nxt_openssl_conn_init;
#ifdef SSL_OP_NO_RENEGOTIATION
/* Renegration is not currently supported. */
SSL_CTX_set_options(ctx, SSL_OP_NO_RENEGOTIATION);
#endif
#ifdef SSL_OP_NO_COMPRESSION
/*
* Disable gzip compression in OpenSSL 1.0.0,
* this saves about 522K per connection.
*/
SSL_CTX_set_options(ctx, SSL_OP_NO_COMPRESSION);
#endif
#ifdef SSL_MODE_RELEASE_BUFFERS
if (nxt_openssl_version >= 10001078) {
/*
* Allow to release read and write buffers in OpenSSL 1.0.0,
* this saves about 34K per idle connection. It is not safe
* before OpenSSL 1.0.1h (CVE-2010-5298).
*/
SSL_CTX_set_mode(ctx, SSL_MODE_RELEASE_BUFFERS);
}
#endif
fd = conf->chain_file;
if (nxt_openssl_chain_file(ctx, fd) != NXT_OK) {
nxt_openssl_log_error(task, NXT_LOG_ALERT,
"nxt_openssl_chain_file() failed");
goto fail;
}
/*
key = conf->certificate_key;
if (SSL_CTX_use_PrivateKey_file(ctx, key, SSL_FILETYPE_PEM) == 0) {
nxt_openssl_log_error(task, NXT_LOG_ALERT,
"SSL_CTX_use_PrivateKey_file(\"%s\") failed",
key);
goto fail;
}
*/
ciphers = (conf->ciphers != NULL) ? conf->ciphers : "HIGH:!aNULL:!MD5";
if (SSL_CTX_set_cipher_list(ctx, ciphers) == 0) {
nxt_openssl_log_error(task, NXT_LOG_ALERT,
"SSL_CTX_set_cipher_list(\"%s\") failed",
ciphers);
goto fail;
}
SSL_CTX_set_options(ctx, SSL_OP_CIPHER_SERVER_PREFERENCE);
if (conf->ca_certificate != NULL) {
/* TODO: verify callback */
SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
/* TODO: verify depth */
SSL_CTX_set_verify_depth(ctx, 1);
ca_certificate = conf->ca_certificate;
if (SSL_CTX_load_verify_locations(ctx, ca_certificate, NULL) == 0) {
nxt_openssl_log_error(task, NXT_LOG_ALERT,
"SSL_CTX_load_verify_locations(\"%s\") failed",
ca_certificate);
goto fail;
}
list = SSL_load_client_CA_file(ca_certificate);
if (list == NULL) {
nxt_openssl_log_error(task, NXT_LOG_ALERT,
"SSL_load_client_CA_file(\"%s\") failed",
ca_certificate);
goto fail;
}
/*
* SSL_load_client_CA_file() in OpenSSL prior to 0.9.7h and
* 0.9.8 versions always leaves an error in the error queue.
*/
ERR_clear_error();
SSL_CTX_set_client_CA_list(ctx, list);
}
return NXT_OK;
fail:
SSL_CTX_free(ctx);
return NXT_ERROR;
}
static nxt_uint_t
nxt_openssl_chain_file(SSL_CTX *ctx, nxt_fd_t fd)
{
BIO *bio;
X509 *cert, *ca;
long reason;
EVP_PKEY *key;
nxt_uint_t ret;
bio = BIO_new(BIO_s_fd());
if (bio == NULL) {
return NXT_ERROR;
}
BIO_set_fd(bio, fd, BIO_CLOSE);
ret = NXT_ERROR;
cert = PEM_read_bio_X509_AUX(bio, NULL, NULL, NULL);
if (cert == NULL) {
goto end;
}
if (SSL_CTX_use_certificate(ctx, cert) != 1) {
goto end;
}
for ( ;; ) {
ca = PEM_read_bio_X509(bio, NULL, NULL, NULL);
if (ca == NULL) {
reason = ERR_GET_REASON(ERR_peek_last_error());
if (reason != PEM_R_NO_START_LINE) {
goto end;
}
ERR_clear_error();
break;
}
/*
* Note that ca isn't freed if it was successfully added to the chain,
* while the main certificate needs a X509_free() call, since
* its reference count is increased by SSL_CTX_use_certificate().
*/
#if OPENSSL_VERSION_NUMBER > 0x10002000L
if (SSL_CTX_add0_chain_cert(ctx, ca) != 1) {
#else
if (SSL_CTX_add_extra_chain_cert(ctx, ca) != 1) {
#endif
X509_free(ca);
goto end;
}
}
if (BIO_reset(bio) != 0) {
goto end;
}
key = PEM_read_bio_PrivateKey(bio, NULL, NULL, NULL);
if (key == NULL) {
goto end;
}
if (SSL_CTX_use_PrivateKey(ctx, key) == 1) {
ret = NXT_OK;
}
EVP_PKEY_free(key);
end:
X509_free(cert);
BIO_free(bio);
return ret;
}
static void
nxt_openssl_server_free(nxt_task_t *task, nxt_tls_conf_t *conf)
{
SSL_CTX_free(conf->ctx);
}
static void
nxt_openssl_conn_init(nxt_task_t *task, nxt_tls_conf_t *conf, nxt_conn_t *c)
{
int ret;
SSL *s;
SSL_CTX *ctx;
nxt_openssl_conn_t *tls;
nxt_log_debug(c->socket.log, "openssl conn init");
tls = nxt_mp_zget(c->mem_pool, sizeof(nxt_openssl_conn_t));
if (tls == NULL) {
goto fail;
}
c->u.tls = tls;
nxt_buf_mem_set_size(&tls->buffer, conf->buffer_size);
ctx = conf->ctx;
s = SSL_new(ctx);
if (s == NULL) {
nxt_openssl_log_error(task, NXT_LOG_ALERT, "SSL_new() failed");
goto fail;
}
tls->session = s;
tls->conn = c;
ret = SSL_set_fd(s, c->socket.fd);
if (ret == 0) {
nxt_openssl_log_error(task, NXT_LOG_ALERT, "SSL_set_fd(%d) failed",
c->socket.fd);
goto fail;
}
SSL_set_accept_state(s);
if (SSL_set_ex_data(s, nxt_openssl_connection_index, c) == 0) {
nxt_openssl_log_error(task, NXT_LOG_ALERT, "SSL_set_ex_data() failed");
goto fail;
}
c->io = &nxt_openssl_conn_io;
c->sendfile = NXT_CONN_SENDFILE_OFF;
nxt_openssl_conn_handshake(task, c, c->socket.data);
return;
fail:
nxt_work_queue_add(c->read_work_queue, c->read_state->error_handler,
task, c, c->socket.data);
}
nxt_inline void
nxt_openssl_conn_free(nxt_task_t *task, nxt_openssl_conn_t *tls)
{
nxt_debug(task, "openssl conn free");
nxt_free(tls->buffer.start);
SSL_free(tls->session);
}
static void
nxt_openssl_conn_handshake(nxt_task_t *task, void *obj, void *data)
{
int ret;
nxt_int_t n;
nxt_err_t err;
nxt_conn_t *c;
nxt_work_queue_t *wq;
nxt_work_handler_t handler;
nxt_openssl_conn_t *tls;
const nxt_conn_state_t *state;
c = obj;
tls = c->u.tls;
nxt_debug(task, "openssl conn handshake: %d", tls->times);
/* "tls->times == 1" is suitable to run SSL_do_handshake() in job. */
ret = SSL_do_handshake(tls->session);
err = (ret <= 0) ? nxt_socket_errno : 0;
nxt_thread_time_debug_update(task->thread);
nxt_debug(task, "SSL_do_handshake(%d): %d err:%d", c->socket.fd, ret, err);
state = (c->read_state != NULL) ? c->read_state : c->write_state;
if (ret > 0) {
/* ret == 1, the handshake was successfully completed. */
tls->handshake = 1;
if (c->read_state != NULL) {
if (state->io_read_handler != NULL || c->read != NULL) {
nxt_conn_read(task->thread->engine, c);
return;
}
} else {
if (c->write != NULL) {
nxt_conn_write(task->thread->engine, c);
return;
}
}
handler = state->ready_handler;
} else {
c->socket.read_handler = nxt_openssl_conn_handshake;
c->socket.write_handler = nxt_openssl_conn_handshake;
n = nxt_openssl_conn_test_error(task, c, ret, err,
NXT_OPENSSL_HANDSHAKE);
switch (n) {
case NXT_AGAIN:
if (tls->ssl_error == SSL_ERROR_WANT_READ && tls->times < 2) {
tls->times++;
}
return;
case 0:
handler = state->close_handler;
break;
default:
case NXT_ERROR:
c->socket.error = err;
nxt_openssl_conn_error(task, err, "SSL_do_handshake(%d) failed",
c->socket.fd);
handler = state->error_handler;
break;
}
}
wq = (c->read_state != NULL) ? c->read_work_queue : c->write_work_queue;
nxt_work_queue_add(wq, handler, task, c, data);
}
static ssize_t
nxt_openssl_conn_io_recvbuf(nxt_conn_t *c, nxt_buf_t *b)
{
int ret;
size_t size;
nxt_int_t n;
nxt_err_t err;
nxt_openssl_conn_t *tls;
tls = c->u.tls;
size = b->mem.end - b->mem.free;
ret = SSL_read(tls->session, b->mem.free, size);
err = (ret <= 0) ? nxt_socket_errno : 0;
nxt_debug(c->socket.task, "SSL_read(%d, %p, %uz): %d err:%d",
c->socket.fd, b->mem.free, size, ret, err);
if (ret > 0) {
if ((size_t) ret < size) {
c->socket.read_ready = 0;
}
return ret;
}
n = nxt_openssl_conn_test_error(c->socket.task, c, ret, err,
NXT_OPENSSL_READ);
if (n == NXT_ERROR) {
c->socket.error = err;
nxt_openssl_conn_error(c->socket.task, err,
"SSL_read(%d, %p, %uz) failed",
c->socket.fd, b->mem.free, size);
}
return n;
}
static ssize_t
nxt_openssl_conn_io_sendbuf(nxt_task_t *task, nxt_sendbuf_t *sb)
{
nxt_uint_t niov;
struct iovec iov;
niov = nxt_sendbuf_mem_coalesce0(task, sb, &iov, 1);
if (niov == 0 && sb->sync) {
return 0;
}
return nxt_openssl_conn_io_send(task, sb, iov.iov_base, iov.iov_len);
}
static ssize_t
nxt_openssl_conn_io_send(nxt_task_t *task, nxt_sendbuf_t *sb, void *buf,
size_t size)
{
int ret;
nxt_err_t err;
nxt_int_t n;
nxt_conn_t *c;
nxt_openssl_conn_t *tls;
tls = sb->tls;
ret = SSL_write(tls->session, buf, size);
if (ret <= 0) {
err = nxt_socket_errno;
sb->error = err;
} else {
err = 0;
}
nxt_debug(task, "SSL_write(%d, %p, %uz): %d err:%d",
sb->socket, buf, size, ret, err);
if (ret > 0) {
return ret;
}
c = tls->conn;
c->socket.write_ready = sb->ready;
c->socket.error = sb->error;
n = nxt_openssl_conn_test_error(task, c, ret, err, NXT_OPENSSL_WRITE);
sb->ready = c->socket.write_ready;
sb->error = c->socket.error;
if (n == NXT_ERROR) {
sb->error = err;
nxt_openssl_conn_error(task, err, "SSL_write(%d, %p, %uz) failed",
sb->socket, buf, size);
}
return n;
}
static void
nxt_openssl_conn_io_shutdown(nxt_task_t *task, void *obj, void *data)
{
int ret, mode;
SSL *s;
nxt_err_t err;
nxt_int_t n;
nxt_bool_t quiet, once;
nxt_conn_t *c;
nxt_openssl_conn_t *tls;
nxt_work_handler_t handler;
c = obj;
nxt_debug(task, "openssl conn shutdown");
c->read_state = NULL;
tls = c->u.tls;
s = tls->session;
if (s == NULL || !tls->handshake) {
handler = c->write_state->ready_handler;
goto done;
}
mode = SSL_get_shutdown(s);
if (c->socket.timedout || c->socket.error != 0) {
quiet = 1;
} else if (c->socket.closed && !(mode & SSL_RECEIVED_SHUTDOWN)) {
quiet = 1;
} else {
quiet = 0;
}
SSL_set_quiet_shutdown(s, quiet);
once = 1;
for ( ;; ) {
SSL_set_shutdown(s, mode);
ret = SSL_shutdown(s);
err = (ret <= 0) ? nxt_socket_errno : 0;
nxt_debug(task, "SSL_shutdown(%d, %d, %b): %d err:%d",
c->socket.fd, mode, quiet, ret, err);
if (ret > 0) {
/* ret == 1, the shutdown was successfully completed. */
handler = c->write_state->ready_handler;
goto done;
}
if (ret == 0) {
/*
* If SSL_shutdown() returns 0 then it should be called
* again. The second SSL_shutdown() call should return
* -1/SSL_ERROR_WANT_READ or -1/SSL_ERROR_WANT_WRITE.
* OpenSSL prior to 0.9.8m version however never returns
* -1 at all. Fortunately, OpenSSL preserves internally
* correct status available via SSL_get_error(-1).
*/
if (once) {
once = 0;
mode = SSL_get_shutdown(s);
continue;
}
ret = -1;
}
/* ret == -1 */
break;
}
c->socket.read_handler = nxt_openssl_conn_io_shutdown;
c->socket.write_handler = nxt_openssl_conn_io_shutdown;
c->socket.error_handler = c->write_state->error_handler;
n = nxt_openssl_conn_test_error(task, c, ret, err, NXT_OPENSSL_SHUTDOWN);
switch (n) {
case 0:
handler = c->write_state->close_handler;
break;
case NXT_AGAIN:
nxt_timer_add(task->thread->engine, &c->read_timer, 5000);
return;
default:
case NXT_ERROR:
c->socket.error = err;
nxt_openssl_conn_error(task, err, "SSL_shutdown(%d) failed",
c->socket.fd);
handler = c->write_state->error_handler;
}
done:
nxt_openssl_conn_free(task, tls);
nxt_work_queue_add(c->write_work_queue, handler, task, c, data);
}
static nxt_int_t
nxt_openssl_conn_test_error(nxt_task_t *task, nxt_conn_t *c, int ret,
nxt_err_t sys_err, nxt_openssl_io_t io)
{
u_long lib_err;
nxt_openssl_conn_t *tls;
tls = c->u.tls;
tls->ssl_error = SSL_get_error(tls->session, ret);
nxt_debug(task, "SSL_get_error(): %d", tls->ssl_error);
switch (tls->ssl_error) {
case SSL_ERROR_WANT_READ:
if (io != NXT_OPENSSL_READ) {
nxt_fd_event_block_write(task->thread->engine, &c->socket);
c->socket.read_ready = 0;
if (nxt_fd_event_is_disabled(c->socket.read)) {
nxt_fd_event_enable_read(task->thread->engine, &c->socket);
}
}
return NXT_AGAIN;
case SSL_ERROR_WANT_WRITE:
if (io != NXT_OPENSSL_WRITE) {
nxt_fd_event_block_read(task->thread->engine, &c->socket);
c->socket.write_ready = 0;
if (nxt_fd_event_is_disabled(c->socket.write)) {
nxt_fd_event_enable_write(task->thread->engine, &c->socket);
}
}
return NXT_AGAIN;
case SSL_ERROR_SYSCALL:
lib_err = ERR_peek_error();
nxt_debug(task, "ERR_peek_error(): %l", lib_err);
if (sys_err != 0 || lib_err != 0) {
return NXT_ERROR;
}
/* A connection was just closed. */
c->socket.closed = 1;
return 0;
case SSL_ERROR_ZERO_RETURN:
/* A "close notify" alert. */
return 0;
default: /* SSL_ERROR_SSL, etc. */
c->socket.error = 1000; /* Nonexistent errno code. */
return NXT_ERROR;
}
}
static void nxt_cdecl
nxt_openssl_conn_error(nxt_task_t *task, nxt_err_t err, const char *fmt, ...)
{
u_char *p, *end;
va_list args;
nxt_uint_t level;
u_char msg[NXT_MAX_ERROR_STR];
level = nxt_openssl_log_error_level(err);
if (nxt_log_level_enough(task->log, level)) {
end = msg + sizeof(msg);
va_start(args, fmt);
p = nxt_vsprintf(msg, end, fmt, args);
va_end(args);
if (err != 0) {
p = nxt_sprintf(p, end, " %E", err);
}
p = nxt_openssl_copy_error(p, end);
nxt_log(task, level, "%*s", p - msg, msg);
} else {
ERR_clear_error();
}
}
static nxt_uint_t
nxt_openssl_log_error_level(nxt_err_t err)
{
switch (ERR_GET_REASON(ERR_peek_error())) {
case 0:
return nxt_socket_error_level(err);
case SSL_R_BAD_CHANGE_CIPHER_SPEC: /* 103 */
case SSL_R_BLOCK_CIPHER_PAD_IS_WRONG: /* 129 */
case SSL_R_DIGEST_CHECK_FAILED: /* 149 */
case SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST: /* 151 */
case SSL_R_EXCESSIVE_MESSAGE_SIZE: /* 152 */
case SSL_R_LENGTH_MISMATCH: /* 159 */
#ifdef SSL_R_NO_CIPHERS_PASSED
case SSL_R_NO_CIPHERS_PASSED: /* 182 */
#endif
case SSL_R_NO_CIPHERS_SPECIFIED: /* 183 */
case SSL_R_NO_COMPRESSION_SPECIFIED: /* 187 */
case SSL_R_NO_SHARED_CIPHER: /* 193 */
case SSL_R_RECORD_LENGTH_MISMATCH: /* 213 */
#ifdef SSL_R_PARSE_TLSEXT
case SSL_R_PARSE_TLSEXT: /* 227 */
#endif
case SSL_R_UNEXPECTED_MESSAGE: /* 244 */
case SSL_R_UNEXPECTED_RECORD: /* 245 */
case SSL_R_UNKNOWN_ALERT_TYPE: /* 246 */
case SSL_R_UNKNOWN_PROTOCOL: /* 252 */
case SSL_R_WRONG_VERSION_NUMBER: /* 267 */
case SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC: /* 281 */
#ifdef SSL_R_RENEGOTIATE_EXT_TOO_LONG
case SSL_R_RENEGOTIATE_EXT_TOO_LONG: /* 335 */
case SSL_R_RENEGOTIATION_ENCODING_ERR: /* 336 */
case SSL_R_RENEGOTIATION_MISMATCH: /* 337 */
#endif
#ifdef SSL_R_UNSAFE_LEGACY_RENEGOTIATION_DISABLED
case SSL_R_UNSAFE_LEGACY_RENEGOTIATION_DISABLED: /* 338 */
#endif
#ifdef SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING
case SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING: /* 345 */
#endif
case 1000:/* SSL_R_SSLV3_ALERT_CLOSE_NOTIFY */
case SSL_R_SSLV3_ALERT_UNEXPECTED_MESSAGE: /* 1010 */
case SSL_R_SSLV3_ALERT_BAD_RECORD_MAC: /* 1020 */
case SSL_R_TLSV1_ALERT_DECRYPTION_FAILED: /* 1021 */
case SSL_R_TLSV1_ALERT_RECORD_OVERFLOW: /* 1022 */
case SSL_R_SSLV3_ALERT_DECOMPRESSION_FAILURE: /* 1030 */
case SSL_R_SSLV3_ALERT_HANDSHAKE_FAILURE: /* 1040 */
case SSL_R_SSLV3_ALERT_ILLEGAL_PARAMETER: /* 1047 */
break;
case SSL_R_SSLV3_ALERT_NO_CERTIFICATE: /* 1041 */
case SSL_R_SSLV3_ALERT_BAD_CERTIFICATE: /* 1042 */
case SSL_R_SSLV3_ALERT_UNSUPPORTED_CERTIFICATE: /* 1043 */
case SSL_R_SSLV3_ALERT_CERTIFICATE_REVOKED: /* 1044 */
case SSL_R_SSLV3_ALERT_CERTIFICATE_EXPIRED: /* 1045 */
case SSL_R_SSLV3_ALERT_CERTIFICATE_UNKNOWN: /* 1046 */
case SSL_R_TLSV1_ALERT_UNKNOWN_CA: /* 1048 */
case SSL_R_TLSV1_ALERT_ACCESS_DENIED: /* 1049 */
case SSL_R_TLSV1_ALERT_DECODE_ERROR: /* 1050 */
case SSL_R_TLSV1_ALERT_DECRYPT_ERROR: /* 1051 */
case SSL_R_TLSV1_ALERT_EXPORT_RESTRICTION: /* 1060 */
case SSL_R_TLSV1_ALERT_PROTOCOL_VERSION: /* 1070 */
case SSL_R_TLSV1_ALERT_INSUFFICIENT_SECURITY: /* 1071 */
case SSL_R_TLSV1_ALERT_INTERNAL_ERROR: /* 1080 */
case SSL_R_TLSV1_ALERT_USER_CANCELLED: /* 1090 */
case SSL_R_TLSV1_ALERT_NO_RENEGOTIATION: /* 1100 */
return NXT_LOG_ERR;
default:
return NXT_LOG_ALERT;
}
return NXT_LOG_INFO;
}
void nxt_cdecl
nxt_openssl_log_error(nxt_task_t *task, nxt_uint_t level, const char *fmt, ...)
{
u_char *p, *end;
va_list args;
u_char msg[NXT_MAX_ERROR_STR];
end = msg + sizeof(msg);
va_start(args, fmt);
p = nxt_vsprintf(msg, end, fmt, args);
va_end(args);
p = nxt_openssl_copy_error(p, end);
nxt_log(task, level, "%*s", p - msg, msg);
}
u_char *
nxt_openssl_copy_error(u_char *p, u_char *end)
{
int flags;
u_long err;
nxt_bool_t clear;
const char *data, *delimiter;
err = ERR_peek_error();
if (err == 0) {
return p;
}
/* Log the most relevant error message ... */
data = ERR_reason_error_string(err);
p = nxt_sprintf(p, end, " (%d: %s) (OpenSSL: ", ERR_GET_REASON(err), data);
/*
* ... followed by all queued cumbersome OpenSSL error messages
* and drain the error queue.
*/
delimiter = "";
clear = 0;
for ( ;; ) {
err = ERR_get_error_line_data(NULL, NULL, &data, &flags);
if (err == 0) {
break;
}
p = nxt_sprintf(p, end, "%s", delimiter);
ERR_error_string_n(err, (char *) p, end - p);
while (p < end && *p != '\0') {
p++;
}
if ((flags & ERR_TXT_STRING) != 0) {
p = nxt_sprintf(p, end, ":%s", data);
}
clear |= ((flags & ERR_TXT_MALLOCED) != 0);
delimiter = "; ";
}
/* Deallocate additional data. */
if (clear) {
ERR_clear_error();
}
if (p < end) {
*p++ = ')';
}
return p;
}
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