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ngx_event_openssl.c
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ngx_event_openssl.c
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/*
* Copyright (C) Igor Sysoev
* Copyright (C) Nginx, Inc.
*/
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_event.h>
#define NGX_SSL_PASSWORD_BUFFER_SIZE 4096
typedef struct {
ngx_uint_t engine; /* unsigned engine:1; */
} ngx_openssl_conf_t;
static int ngx_ssl_password_callback(char *buf, int size, int rwflag,
void *userdata);
static int ngx_ssl_verify_callback(int ok, X509_STORE_CTX *x509_store);
static void ngx_ssl_info_callback(const ngx_ssl_conn_t *ssl_conn, int where,
int ret);
static void ngx_ssl_passwords_cleanup(void *data);
static void ngx_ssl_handshake_handler(ngx_event_t *ev);
static ngx_int_t ngx_ssl_handle_recv(ngx_connection_t *c, int n);
static void ngx_ssl_write_handler(ngx_event_t *wev);
static void ngx_ssl_read_handler(ngx_event_t *rev);
static void ngx_ssl_shutdown_handler(ngx_event_t *ev);
static void ngx_ssl_connection_error(ngx_connection_t *c, int sslerr,
ngx_err_t err, char *text);
static void ngx_ssl_clear_error(ngx_log_t *log);
static ngx_int_t ngx_ssl_session_id_context(ngx_ssl_t *ssl,
ngx_str_t *sess_ctx);
ngx_int_t ngx_ssl_session_cache_init(ngx_shm_zone_t *shm_zone, void *data);
static int ngx_ssl_new_session(ngx_ssl_conn_t *ssl_conn,
ngx_ssl_session_t *sess);
static ngx_ssl_session_t *ngx_ssl_get_cached_session(ngx_ssl_conn_t *ssl_conn,
#if OPENSSL_VERSION_NUMBER >= 0x10100003L
const
#endif
u_char *id, int len, int *copy);
static void ngx_ssl_remove_session(SSL_CTX *ssl, ngx_ssl_session_t *sess);
static void ngx_ssl_expire_sessions(ngx_ssl_session_cache_t *cache,
ngx_slab_pool_t *shpool, ngx_uint_t n);
static void ngx_ssl_session_rbtree_insert_value(ngx_rbtree_node_t *temp,
ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel);
#ifdef SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB
static int ngx_ssl_session_ticket_key_callback(ngx_ssl_conn_t *ssl_conn,
unsigned char *name, unsigned char *iv, EVP_CIPHER_CTX *ectx,
HMAC_CTX *hctx, int enc);
#endif
#if OPENSSL_VERSION_NUMBER < 0x10002002L
static ngx_int_t ngx_ssl_check_name(ngx_str_t *name, ASN1_STRING *str);
#endif
static void *ngx_openssl_create_conf(ngx_cycle_t *cycle);
static char *ngx_openssl_engine(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
static void ngx_openssl_exit(ngx_cycle_t *cycle);
static ngx_command_t ngx_openssl_commands[] = {
{ ngx_string("ssl_engine"),
NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_TAKE1,
ngx_openssl_engine,
0,
0,
NULL },
ngx_null_command
};
static ngx_core_module_t ngx_openssl_module_ctx = {
ngx_string("openssl"),
ngx_openssl_create_conf,
NULL
};
ngx_module_t ngx_openssl_module = {
NGX_MODULE_V1,
&ngx_openssl_module_ctx, /* module context */
ngx_openssl_commands, /* module directives */
NGX_CORE_MODULE, /* module type */
NULL, /* init master */
NULL, /* init module */
NULL, /* init process */
NULL, /* init thread */
NULL, /* exit thread */
NULL, /* exit process */
ngx_openssl_exit, /* exit master */
NGX_MODULE_V1_PADDING
};
int ngx_ssl_connection_index;
int ngx_ssl_server_conf_index;
int ngx_ssl_session_cache_index;
int ngx_ssl_session_ticket_keys_index;
int ngx_ssl_certificate_index;
int ngx_ssl_stapling_index;
ngx_int_t
ngx_ssl_init(ngx_log_t *log)
{
#if OPENSSL_VERSION_NUMBER >= 0x10100003L
OPENSSL_init_ssl(OPENSSL_INIT_LOAD_CONFIG, NULL);
#else
#ifndef OPENSSL_IS_BORINGSSL
OPENSSL_config(NULL);
#endif
SSL_library_init();
SSL_load_error_strings();
OpenSSL_add_all_algorithms();
#endif
#if OPENSSL_VERSION_NUMBER >= 0x0090800fL
#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();
n = sk_SSL_COMP_num(ssl_comp_methods);
while (n--) {
(void) sk_SSL_COMP_pop(ssl_comp_methods);
}
}
#endif
#endif
ngx_ssl_connection_index = SSL_get_ex_new_index(0, NULL, NULL, NULL, NULL);
if (ngx_ssl_connection_index == -1) {
ngx_ssl_error(NGX_LOG_ALERT, log, 0, "SSL_get_ex_new_index() failed");
return NGX_ERROR;
}
ngx_ssl_server_conf_index = SSL_CTX_get_ex_new_index(0, NULL, NULL, NULL,
NULL);
if (ngx_ssl_server_conf_index == -1) {
ngx_ssl_error(NGX_LOG_ALERT, log, 0,
"SSL_CTX_get_ex_new_index() failed");
return NGX_ERROR;
}
ngx_ssl_session_cache_index = SSL_CTX_get_ex_new_index(0, NULL, NULL, NULL,
NULL);
if (ngx_ssl_session_cache_index == -1) {
ngx_ssl_error(NGX_LOG_ALERT, log, 0,
"SSL_CTX_get_ex_new_index() failed");
return NGX_ERROR;
}
ngx_ssl_session_ticket_keys_index = SSL_CTX_get_ex_new_index(0, NULL, NULL,
NULL, NULL);
if (ngx_ssl_session_ticket_keys_index == -1) {
ngx_ssl_error(NGX_LOG_ALERT, log, 0,
"SSL_CTX_get_ex_new_index() failed");
return NGX_ERROR;
}
ngx_ssl_certificate_index = SSL_CTX_get_ex_new_index(0, NULL, NULL, NULL,
NULL);
if (ngx_ssl_certificate_index == -1) {
ngx_ssl_error(NGX_LOG_ALERT, log, 0,
"SSL_CTX_get_ex_new_index() failed");
return NGX_ERROR;
}
ngx_ssl_stapling_index = SSL_CTX_get_ex_new_index(0, NULL, NULL, NULL,
NULL);
if (ngx_ssl_stapling_index == -1) {
ngx_ssl_error(NGX_LOG_ALERT, log, 0,
"SSL_CTX_get_ex_new_index() failed");
return NGX_ERROR;
}
return NGX_OK;
}
ngx_int_t
ngx_ssl_create(ngx_ssl_t *ssl, ngx_uint_t protocols, void *data)
{
ssl->ctx = SSL_CTX_new(SSLv23_method());
if (ssl->ctx == NULL) {
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0, "SSL_CTX_new() failed");
return NGX_ERROR;
}
if (SSL_CTX_set_ex_data(ssl->ctx, ngx_ssl_server_conf_index, data) == 0) {
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"SSL_CTX_set_ex_data() failed");
return NGX_ERROR;
}
ssl->buffer_size = NGX_SSL_BUFSIZE;
/* client side options */
#ifdef SSL_OP_MICROSOFT_SESS_ID_BUG
SSL_CTX_set_options(ssl->ctx, SSL_OP_MICROSOFT_SESS_ID_BUG);
#endif
#ifdef SSL_OP_NETSCAPE_CHALLENGE_BUG
SSL_CTX_set_options(ssl->ctx, SSL_OP_NETSCAPE_CHALLENGE_BUG);
#endif
/* server side options */
#ifdef SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG
SSL_CTX_set_options(ssl->ctx, SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG);
#endif
#ifdef SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER
SSL_CTX_set_options(ssl->ctx, SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER);
#endif
#ifdef SSL_OP_MSIE_SSLV2_RSA_PADDING
/* this option allow a potential SSL 2.0 rollback (CAN-2005-2969) */
SSL_CTX_set_options(ssl->ctx, SSL_OP_MSIE_SSLV2_RSA_PADDING);
#endif
#ifdef SSL_OP_SSLEAY_080_CLIENT_DH_BUG
SSL_CTX_set_options(ssl->ctx, SSL_OP_SSLEAY_080_CLIENT_DH_BUG);
#endif
#ifdef SSL_OP_TLS_D5_BUG
SSL_CTX_set_options(ssl->ctx, SSL_OP_TLS_D5_BUG);
#endif
#ifdef SSL_OP_TLS_BLOCK_PADDING_BUG
SSL_CTX_set_options(ssl->ctx, SSL_OP_TLS_BLOCK_PADDING_BUG);
#endif
#ifdef SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
SSL_CTX_set_options(ssl->ctx, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS);
#endif
SSL_CTX_set_options(ssl->ctx, SSL_OP_SINGLE_DH_USE);
#ifdef SSL_CTRL_CLEAR_OPTIONS
/* only in 0.9.8m+ */
SSL_CTX_clear_options(ssl->ctx,
SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3|SSL_OP_NO_TLSv1);
#endif
if (!(protocols & NGX_SSL_SSLv2)) {
SSL_CTX_set_options(ssl->ctx, SSL_OP_NO_SSLv2);
}
if (!(protocols & NGX_SSL_SSLv3)) {
SSL_CTX_set_options(ssl->ctx, SSL_OP_NO_SSLv3);
}
if (!(protocols & NGX_SSL_TLSv1)) {
SSL_CTX_set_options(ssl->ctx, SSL_OP_NO_TLSv1);
}
#ifdef SSL_OP_NO_TLSv1_1
SSL_CTX_clear_options(ssl->ctx, SSL_OP_NO_TLSv1_1);
if (!(protocols & NGX_SSL_TLSv1_1)) {
SSL_CTX_set_options(ssl->ctx, SSL_OP_NO_TLSv1_1);
}
#endif
#ifdef SSL_OP_NO_TLSv1_2
SSL_CTX_clear_options(ssl->ctx, SSL_OP_NO_TLSv1_2);
if (!(protocols & NGX_SSL_TLSv1_2)) {
SSL_CTX_set_options(ssl->ctx, SSL_OP_NO_TLSv1_2);
}
#endif
#ifdef SSL_OP_NO_COMPRESSION
SSL_CTX_set_options(ssl->ctx, SSL_OP_NO_COMPRESSION);
#endif
#ifdef SSL_MODE_RELEASE_BUFFERS
SSL_CTX_set_mode(ssl->ctx, SSL_MODE_RELEASE_BUFFERS);
#endif
#ifdef SSL_MODE_NO_AUTO_CHAIN
SSL_CTX_set_mode(ssl->ctx, SSL_MODE_NO_AUTO_CHAIN);
#endif
SSL_CTX_set_read_ahead(ssl->ctx, 1);
SSL_CTX_set_info_callback(ssl->ctx, ngx_ssl_info_callback);
return NGX_OK;
}
ngx_int_t
ngx_ssl_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *cert,
ngx_str_t *key, ngx_array_t *passwords)
{
BIO *bio;
X509 *x509;
u_long n;
ngx_str_t *pwd;
ngx_uint_t tries;
if (ngx_conf_full_name(cf->cycle, cert, 1) != NGX_OK) {
return NGX_ERROR;
}
/*
* we can't use SSL_CTX_use_certificate_chain_file() as it doesn't
* allow to access certificate later from SSL_CTX, so we reimplement
* it here
*/
bio = BIO_new_file((char *) cert->data, "r");
if (bio == NULL) {
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"BIO_new_file(\"%s\") failed", cert->data);
return NGX_ERROR;
}
x509 = PEM_read_bio_X509_AUX(bio, NULL, NULL, NULL);
if (x509 == NULL) {
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"PEM_read_bio_X509_AUX(\"%s\") failed", cert->data);
BIO_free(bio);
return NGX_ERROR;
}
if (SSL_CTX_use_certificate(ssl->ctx, x509) == 0) {
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"SSL_CTX_use_certificate(\"%s\") failed", cert->data);
X509_free(x509);
BIO_free(bio);
return NGX_ERROR;
}
if (SSL_CTX_set_ex_data(ssl->ctx, ngx_ssl_certificate_index, x509)
== 0)
{
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"SSL_CTX_set_ex_data() failed");
X509_free(x509);
BIO_free(bio);
return NGX_ERROR;
}
X509_free(x509);
/* read rest of the chain */
for ( ;; ) {
x509 = PEM_read_bio_X509(bio, NULL, NULL, NULL);
if (x509 == NULL) {
n = ERR_peek_last_error();
if (ERR_GET_LIB(n) == ERR_LIB_PEM
&& ERR_GET_REASON(n) == PEM_R_NO_START_LINE)
{
/* end of file */
ERR_clear_error();
break;
}
/* some real error */
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"PEM_read_bio_X509(\"%s\") failed", cert->data);
BIO_free(bio);
return NGX_ERROR;
}
if (SSL_CTX_add_extra_chain_cert(ssl->ctx, x509) == 0) {
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"SSL_CTX_add_extra_chain_cert(\"%s\") failed",
cert->data);
X509_free(x509);
BIO_free(bio);
return NGX_ERROR;
}
}
BIO_free(bio);
if (ngx_strncmp(key->data, "engine:", sizeof("engine:") - 1) == 0) {
#ifndef OPENSSL_NO_ENGINE
u_char *p, *last;
ENGINE *engine;
EVP_PKEY *pkey;
p = key->data + sizeof("engine:") - 1;
last = (u_char *) ngx_strchr(p, ':');
if (last == NULL) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid syntax in \"%V\"", key);
return NGX_ERROR;
}
*last = '\0';
engine = ENGINE_by_id((char *) p);
if (engine == NULL) {
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"ENGINE_by_id(\"%s\") failed", p);
return NGX_ERROR;
}
*last++ = ':';
pkey = ENGINE_load_private_key(engine, (char *) last, 0, 0);
if (pkey == NULL) {
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"ENGINE_load_private_key(\"%s\") failed", last);
ENGINE_free(engine);
return NGX_ERROR;
}
ENGINE_free(engine);
if (SSL_CTX_use_PrivateKey(ssl->ctx, pkey) == 0) {
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"SSL_CTX_use_PrivateKey(\"%s\") failed", last);
EVP_PKEY_free(pkey);
return NGX_ERROR;
}
EVP_PKEY_free(pkey);
return NGX_OK;
#else
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"loading \"engine:...\" certificate keys "
"is not supported");
return NGX_ERROR;
#endif
}
if (ngx_conf_full_name(cf->cycle, key, 1) != NGX_OK) {
return NGX_ERROR;
}
if (passwords) {
tries = passwords->nelts;
pwd = passwords->elts;
SSL_CTX_set_default_passwd_cb(ssl->ctx, ngx_ssl_password_callback);
SSL_CTX_set_default_passwd_cb_userdata(ssl->ctx, pwd);
} else {
tries = 1;
#if (NGX_SUPPRESS_WARN)
pwd = NULL;
#endif
}
for ( ;; ) {
if (SSL_CTX_use_PrivateKey_file(ssl->ctx, (char *) key->data,
SSL_FILETYPE_PEM)
!= 0)
{
break;
}
if (--tries) {
ERR_clear_error();
SSL_CTX_set_default_passwd_cb_userdata(ssl->ctx, ++pwd);
continue;
}
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"SSL_CTX_use_PrivateKey_file(\"%s\") failed", key->data);
return NGX_ERROR;
}
SSL_CTX_set_default_passwd_cb(ssl->ctx, NULL);
return NGX_OK;
}
static int
ngx_ssl_password_callback(char *buf, int size, int rwflag, void *userdata)
{
ngx_str_t *pwd = userdata;
if (rwflag) {
ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0,
"ngx_ssl_password_callback() is called for encryption");
return 0;
}
if (pwd->len > (size_t) size) {
ngx_log_error(NGX_LOG_ERR, ngx_cycle->log, 0,
"password is truncated to %d bytes", size);
} else {
size = pwd->len;
}
ngx_memcpy(buf, pwd->data, size);
return size;
}
ngx_int_t
ngx_ssl_client_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *cert,
ngx_int_t depth)
{
STACK_OF(X509_NAME) *list;
SSL_CTX_set_verify(ssl->ctx, SSL_VERIFY_PEER, ngx_ssl_verify_callback);
SSL_CTX_set_verify_depth(ssl->ctx, depth);
if (cert->len == 0) {
return NGX_OK;
}
if (ngx_conf_full_name(cf->cycle, cert, 1) != NGX_OK) {
return NGX_ERROR;
}
if (SSL_CTX_load_verify_locations(ssl->ctx, (char *) cert->data, NULL)
== 0)
{
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"SSL_CTX_load_verify_locations(\"%s\") failed",
cert->data);
return NGX_ERROR;
}
/*
* SSL_CTX_load_verify_locations() may leave errors in the error queue
* while returning success
*/
ERR_clear_error();
list = SSL_load_client_CA_file((char *) cert->data);
if (list == NULL) {
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"SSL_load_client_CA_file(\"%s\") failed", cert->data);
return NGX_ERROR;
}
/*
* before 0.9.7h and 0.9.8 SSL_load_client_CA_file()
* always leaved an error in the error queue
*/
ERR_clear_error();
SSL_CTX_set_client_CA_list(ssl->ctx, list);
return NGX_OK;
}
ngx_int_t
ngx_ssl_trusted_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *cert,
ngx_int_t depth)
{
SSL_CTX_set_verify_depth(ssl->ctx, depth);
if (cert->len == 0) {
return NGX_OK;
}
if (ngx_conf_full_name(cf->cycle, cert, 1) != NGX_OK) {
return NGX_ERROR;
}
if (SSL_CTX_load_verify_locations(ssl->ctx, (char *) cert->data, NULL)
== 0)
{
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"SSL_CTX_load_verify_locations(\"%s\") failed",
cert->data);
return NGX_ERROR;
}
/*
* SSL_CTX_load_verify_locations() may leave errors in the error queue
* while returning success
*/
ERR_clear_error();
return NGX_OK;
}
ngx_int_t
ngx_ssl_crl(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *crl)
{
X509_STORE *store;
X509_LOOKUP *lookup;
if (crl->len == 0) {
return NGX_OK;
}
if (ngx_conf_full_name(cf->cycle, crl, 1) != NGX_OK) {
return NGX_ERROR;
}
store = SSL_CTX_get_cert_store(ssl->ctx);
if (store == NULL) {
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"SSL_CTX_get_cert_store() failed");
return NGX_ERROR;
}
lookup = X509_STORE_add_lookup(store, X509_LOOKUP_file());
if (lookup == NULL) {
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"X509_STORE_add_lookup() failed");
return NGX_ERROR;
}
if (X509_LOOKUP_load_file(lookup, (char *) crl->data, X509_FILETYPE_PEM)
== 0)
{
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"X509_LOOKUP_load_file(\"%s\") failed", crl->data);
return NGX_ERROR;
}
X509_STORE_set_flags(store,
X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL);
return NGX_OK;
}
static int
ngx_ssl_verify_callback(int ok, X509_STORE_CTX *x509_store)
{
#if (NGX_DEBUG)
char *subject, *issuer;
int err, depth;
X509 *cert;
X509_NAME *sname, *iname;
ngx_connection_t *c;
ngx_ssl_conn_t *ssl_conn;
ssl_conn = X509_STORE_CTX_get_ex_data(x509_store,
SSL_get_ex_data_X509_STORE_CTX_idx());
c = ngx_ssl_get_connection(ssl_conn);
cert = X509_STORE_CTX_get_current_cert(x509_store);
err = X509_STORE_CTX_get_error(x509_store);
depth = X509_STORE_CTX_get_error_depth(x509_store);
sname = X509_get_subject_name(cert);
subject = sname ? X509_NAME_oneline(sname, NULL, 0) : "(none)";
iname = X509_get_issuer_name(cert);
issuer = iname ? X509_NAME_oneline(iname, NULL, 0) : "(none)";
ngx_log_debug5(NGX_LOG_DEBUG_EVENT, c->log, 0,
"verify:%d, error:%d, depth:%d, "
"subject:\"%s\", issuer:\"%s\"",
ok, err, depth, subject, issuer);
if (sname) {
OPENSSL_free(subject);
}
if (iname) {
OPENSSL_free(issuer);
}
#endif
return 1;
}
static void
ngx_ssl_info_callback(const ngx_ssl_conn_t *ssl_conn, int where, int ret)
{
BIO *rbio, *wbio;
ngx_connection_t *c;
if (where & SSL_CB_HANDSHAKE_START) {
c = ngx_ssl_get_connection((ngx_ssl_conn_t *) ssl_conn);
if (c->ssl->handshaked) {
c->ssl->renegotiation = 1;
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL renegotiation");
}
}
if ((where & SSL_CB_ACCEPT_LOOP) == SSL_CB_ACCEPT_LOOP) {
c = ngx_ssl_get_connection((ngx_ssl_conn_t *) ssl_conn);
if (!c->ssl->handshake_buffer_set) {
/*
* By default OpenSSL uses 4k buffer during a handshake,
* which is too low for long certificate chains and might
* result in extra round-trips.
*
* To adjust a buffer size we detect that buffering was added
* to write side of the connection by comparing rbio and wbio.
* If they are different, we assume that it's due to buffering
* added to wbio, and set buffer size.
*/
rbio = SSL_get_rbio((ngx_ssl_conn_t *) ssl_conn);
wbio = SSL_get_wbio((ngx_ssl_conn_t *) ssl_conn);
if (rbio != wbio) {
(void) BIO_set_write_buffer_size(wbio, NGX_SSL_BUFSIZE);
c->ssl->handshake_buffer_set = 1;
}
}
}
}
RSA *
ngx_ssl_rsa512_key_callback(ngx_ssl_conn_t *ssl_conn, int is_export,
int key_length)
{
static RSA *key;
if (key_length != 512) {
return NULL;
}
#if (OPENSSL_VERSION_NUMBER < 0x10100003L && !defined OPENSSL_NO_DEPRECATED)
if (key == NULL) {
key = RSA_generate_key(512, RSA_F4, NULL, NULL);
}
#endif
return key;
}
ngx_array_t *
ngx_ssl_read_password_file(ngx_conf_t *cf, ngx_str_t *file)
{
u_char *p, *last, *end;
size_t len;
ssize_t n;
ngx_fd_t fd;
ngx_str_t *pwd;
ngx_array_t *passwords;
ngx_pool_cleanup_t *cln;
u_char buf[NGX_SSL_PASSWORD_BUFFER_SIZE];
if (ngx_conf_full_name(cf->cycle, file, 1) != NGX_OK) {
return NULL;
}
cln = ngx_pool_cleanup_add(cf->temp_pool, 0);
passwords = ngx_array_create(cf->temp_pool, 4, sizeof(ngx_str_t));
if (cln == NULL || passwords == NULL) {
return NULL;
}
cln->handler = ngx_ssl_passwords_cleanup;
cln->data = passwords;
fd = ngx_open_file(file->data, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0);
if (fd == NGX_INVALID_FILE) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno,
ngx_open_file_n " \"%s\" failed", file->data);
return NULL;
}
len = 0;
last = buf;
do {
n = ngx_read_fd(fd, last, NGX_SSL_PASSWORD_BUFFER_SIZE - len);
if (n == -1) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno,
ngx_read_fd_n " \"%s\" failed", file->data);
passwords = NULL;
goto cleanup;
}
end = last + n;
if (len && n == 0) {
*end++ = LF;
}
p = buf;
for ( ;; ) {
last = ngx_strlchr(last, end, LF);
if (last == NULL) {
break;
}
len = last++ - p;
if (len && p[len - 1] == CR) {
len--;
}
if (len) {
pwd = ngx_array_push(passwords);
if (pwd == NULL) {
passwords = NULL;
goto cleanup;
}
pwd->len = len;
pwd->data = ngx_pnalloc(cf->temp_pool, len);
if (pwd->data == NULL) {
passwords->nelts--;
passwords = NULL;
goto cleanup;
}
ngx_memcpy(pwd->data, p, len);
}
p = last;
}
len = end - p;
if (len == NGX_SSL_PASSWORD_BUFFER_SIZE) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"too long line in \"%s\"", file->data);
passwords = NULL;
goto cleanup;
}
ngx_memmove(buf, p, len);
last = buf + len;
} while (n != 0);
if (passwords->nelts == 0) {
pwd = ngx_array_push(passwords);
if (pwd == NULL) {
passwords = NULL;
goto cleanup;
}
ngx_memzero(pwd, sizeof(ngx_str_t));
}
cleanup:
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_conf_log_error(NGX_LOG_ALERT, cf, ngx_errno,
ngx_close_file_n " \"%s\" failed", file->data);
}
ngx_memzero(buf, NGX_SSL_PASSWORD_BUFFER_SIZE);
return passwords;
}
static void
ngx_ssl_passwords_cleanup(void *data)
{
ngx_array_t *passwords = data;
ngx_str_t *pwd;
ngx_uint_t i;
pwd = passwords->elts;
for (i = 0; i < passwords->nelts; i++) {
ngx_memzero(pwd[i].data, pwd[i].len);
}
}
ngx_int_t
ngx_ssl_dhparam(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *file)
{
DH *dh;
BIO *bio;
/*
* -----BEGIN DH PARAMETERS-----
* MIGHAoGBALu8LcrYRnSQfEP89YDpz9vZWKP1aLQtSwju1OsPs1BMbAMCducQgAxc
* y7qokiYUxb7spWWl/fHSh6K8BJvmd4Bg6RqSp1fjBI9osHb302zI8pul34HcLKcl
* 7OZicMyaUDXYzs7vnqAnSmOrHlj6/UmI0PZdFGdX2gcd8EXP4WubAgEC
* -----END DH PARAMETERS-----
*/
static unsigned char dh1024_p[] = {
0xBB, 0xBC, 0x2D, 0xCA, 0xD8, 0x46, 0x74, 0x90, 0x7C, 0x43, 0xFC, 0xF5,
0x80, 0xE9, 0xCF, 0xDB, 0xD9, 0x58, 0xA3, 0xF5, 0x68, 0xB4, 0x2D, 0x4B,
0x08, 0xEE, 0xD4, 0xEB, 0x0F, 0xB3, 0x50, 0x4C, 0x6C, 0x03, 0x02, 0x76,
0xE7, 0x10, 0x80, 0x0C, 0x5C, 0xCB, 0xBA, 0xA8, 0x92, 0x26, 0x14, 0xC5,
0xBE, 0xEC, 0xA5, 0x65, 0xA5, 0xFD, 0xF1, 0xD2, 0x87, 0xA2, 0xBC, 0x04,
0x9B, 0xE6, 0x77, 0x80, 0x60, 0xE9, 0x1A, 0x92, 0xA7, 0x57, 0xE3, 0x04,
0x8F, 0x68, 0xB0, 0x76, 0xF7, 0xD3, 0x6C, 0xC8, 0xF2, 0x9B, 0xA5, 0xDF,
0x81, 0xDC, 0x2C, 0xA7, 0x25, 0xEC, 0xE6, 0x62, 0x70, 0xCC, 0x9A, 0x50,
0x35, 0xD8, 0xCE, 0xCE, 0xEF, 0x9E, 0xA0, 0x27, 0x4A, 0x63, 0xAB, 0x1E,
0x58, 0xFA, 0xFD, 0x49, 0x88, 0xD0, 0xF6, 0x5D, 0x14, 0x67, 0x57, 0xDA,
0x07, 0x1D, 0xF0, 0x45, 0xCF, 0xE1, 0x6B, 0x9B
};
static unsigned char dh1024_g[] = { 0x02 };
if (file->len == 0) {
dh = DH_new();
if (dh == NULL) {
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0, "DH_new() failed");
return NGX_ERROR;
}
#if OPENSSL_VERSION_NUMBER < 0x10100005L
dh->p = BN_bin2bn(dh1024_p, sizeof(dh1024_p), NULL);
dh->g = BN_bin2bn(dh1024_g, sizeof(dh1024_g), NULL);
if (dh->p == NULL || dh->g == NULL) {
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0, "BN_bin2bn() failed");
DH_free(dh);
return NGX_ERROR;
}
#else
{
BIGNUM *p, *g;
p = BN_bin2bn(dh1024_p, sizeof(dh1024_p), NULL);
g = BN_bin2bn(dh1024_g, sizeof(dh1024_g), NULL);
if (p == NULL || g == NULL || !DH_set0_pqg(dh, p, NULL, g)) {
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0, "BN_bin2bn() failed");
DH_free(dh);
BN_free(p);
BN_free(g);
return NGX_ERROR;
}
}
#endif
SSL_CTX_set_tmp_dh(ssl->ctx, dh);
DH_free(dh);
return NGX_OK;
}
if (ngx_conf_full_name(cf->cycle, file, 1) != NGX_OK) {
return NGX_ERROR;
}
bio = BIO_new_file((char *) file->data, "r");
if (bio == NULL) {
ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
"BIO_new_file(\"%s\") failed", file->data);
return NGX_ERROR;
}
dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);