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@evanphx @MSP-Greg @dmarcotte @BenV @olleolleolle @nateberkopec @lian @memiux @mlarraz @skrobul @Koronen @284km @frodsan @fmauNeko @eric-norcross @dbussink
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#define RSTRING_NOT_MODIFIED 1
#include <ruby.h>
#include <ruby/version.h>
#if RUBY_API_VERSION_MAJOR == 1
#include <rubyio.h>
#else
#include <ruby/io.h>
#endif
#ifdef HAVE_OPENSSL_BIO_H
#include <openssl/bio.h>
#include <openssl/ssl.h>
#include <openssl/dh.h>
#include <openssl/err.h>
#include <openssl/x509.h>
#ifndef SSL_OP_NO_COMPRESSION
#define SSL_OP_NO_COMPRESSION 0
#endif
typedef struct {
BIO* read;
BIO* write;
SSL* ssl;
SSL_CTX* ctx;
} ms_conn;
typedef struct {
unsigned char* buf;
int bytes;
} ms_cert_buf;
void engine_free(ms_conn* conn) {
ms_cert_buf* cert_buf = (ms_cert_buf*)SSL_get_app_data(conn->ssl);
if(cert_buf) {
OPENSSL_free(cert_buf->buf);
free(cert_buf);
}
SSL_free(conn->ssl);
SSL_CTX_free(conn->ctx);
free(conn);
}
ms_conn* engine_alloc(VALUE klass, VALUE* obj) {
ms_conn* conn;
*obj = Data_Make_Struct(klass, ms_conn, 0, engine_free, conn);
conn->read = BIO_new(BIO_s_mem());
BIO_set_nbio(conn->read, 1);
conn->write = BIO_new(BIO_s_mem());
BIO_set_nbio(conn->write, 1);
conn->ssl = 0;
conn->ctx = 0;
return conn;
}
DH *get_dh1024() {
/* `openssl dhparam 1024 -C`
* -----BEGIN DH PARAMETERS-----
* MIGHAoGBALPwcEv0OstmQCZdfHw0N5r+07lmXMxkpQacy1blwj0LUqC+Divp6pBk
* usTJ9W2/dOYr1X7zi6yXNLp4oLzc/31PUL3D9q8CpGS7vPz5gijKSw9BwCTT5z9+
* KF9v46qw8XqT5HHV87sWFlGQcVFq+pEkA2kPikkKZ/X/CCcpCAV7AgEC
* -----END DH PARAMETERS-----
*/
static unsigned char dh1024_p[] = {
0xB3,0xF0,0x70,0x4B,0xF4,0x3A,0xCB,0x66,0x40,0x26,0x5D,0x7C,
0x7C,0x34,0x37,0x9A,0xFE,0xD3,0xB9,0x66,0x5C,0xCC,0x64,0xA5,
0x06,0x9C,0xCB,0x56,0xE5,0xC2,0x3D,0x0B,0x52,0xA0,0xBE,0x0E,
0x2B,0xE9,0xEA,0x90,0x64,0xBA,0xC4,0xC9,0xF5,0x6D,0xBF,0x74,
0xE6,0x2B,0xD5,0x7E,0xF3,0x8B,0xAC,0x97,0x34,0xBA,0x78,0xA0,
0xBC,0xDC,0xFF,0x7D,0x4F,0x50,0xBD,0xC3,0xF6,0xAF,0x02,0xA4,
0x64,0xBB,0xBC,0xFC,0xF9,0x82,0x28,0xCA,0x4B,0x0F,0x41,0xC0,
0x24,0xD3,0xE7,0x3F,0x7E,0x28,0x5F,0x6F,0xE3,0xAA,0xB0,0xF1,
0x7A,0x93,0xE4,0x71,0xD5,0xF3,0xBB,0x16,0x16,0x51,0x90,0x71,
0x51,0x6A,0xFA,0x91,0x24,0x03,0x69,0x0F,0x8A,0x49,0x0A,0x67,
0xF5,0xFF,0x08,0x27,0x29,0x08,0x05,0x7B
};
static unsigned char dh1024_g[] = { 0x02 };
DH *dh;
dh = DH_new();
#if OPENSSL_VERSION_NUMBER < 0x10100005L || defined(LIBRESSL_VERSION_NUMBER)
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)) {
DH_free(dh);
return NULL;
}
#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)) {
DH_free(dh);
BN_free(p);
BN_free(g);
return NULL;
}
#endif
return dh;
}
static int engine_verify_callback(int preverify_ok, X509_STORE_CTX* ctx) {
X509* err_cert;
SSL* ssl;
int bytes;
unsigned char* buf = NULL;
if(!preverify_ok) {
err_cert = X509_STORE_CTX_get_current_cert(ctx);
if(err_cert) {
/*
* Save the failed certificate for inspection/logging.
*/
bytes = i2d_X509(err_cert, &buf);
if(bytes > 0) {
ms_cert_buf* cert_buf = (ms_cert_buf*)malloc(sizeof(ms_cert_buf));
cert_buf->buf = buf;
cert_buf->bytes = bytes;
ssl = X509_STORE_CTX_get_ex_data(ctx, SSL_get_ex_data_X509_STORE_CTX_idx());
SSL_set_app_data(ssl, cert_buf);
}
}
}
return preverify_ok;
}
VALUE engine_init_server(VALUE self, VALUE mini_ssl_ctx) {
VALUE obj;
SSL_CTX* ctx;
SSL* ssl;
int min, ssl_options;
ms_conn* conn = engine_alloc(self, &obj);
ID sym_key = rb_intern("key");
VALUE key = rb_funcall(mini_ssl_ctx, sym_key, 0);
StringValue(key);
ID sym_cert = rb_intern("cert");
VALUE cert = rb_funcall(mini_ssl_ctx, sym_cert, 0);
StringValue(cert);
ID sym_ca = rb_intern("ca");
VALUE ca = rb_funcall(mini_ssl_ctx, sym_ca, 0);
ID sym_verify_mode = rb_intern("verify_mode");
VALUE verify_mode = rb_funcall(mini_ssl_ctx, sym_verify_mode, 0);
ID sym_ssl_cipher_filter = rb_intern("ssl_cipher_filter");
VALUE ssl_cipher_filter = rb_funcall(mini_ssl_ctx, sym_ssl_cipher_filter, 0);
ID sym_no_tlsv1 = rb_intern("no_tlsv1");
VALUE no_tlsv1 = rb_funcall(mini_ssl_ctx, sym_no_tlsv1, 0);
ID sym_no_tlsv1_1 = rb_intern("no_tlsv1_1");
VALUE no_tlsv1_1 = rb_funcall(mini_ssl_ctx, sym_no_tlsv1_1, 0);
#ifdef HAVE_TLS_SERVER_METHOD
ctx = SSL_CTX_new(TLS_server_method());
#else
ctx = SSL_CTX_new(SSLv23_server_method());
#endif
conn->ctx = ctx;
SSL_CTX_use_certificate_chain_file(ctx, RSTRING_PTR(cert));
SSL_CTX_use_PrivateKey_file(ctx, RSTRING_PTR(key), SSL_FILETYPE_PEM);
if (!NIL_P(ca)) {
StringValue(ca);
SSL_CTX_load_verify_locations(ctx, RSTRING_PTR(ca), NULL);
}
ssl_options = SSL_OP_CIPHER_SERVER_PREFERENCE | SSL_OP_SINGLE_ECDH_USE | SSL_OP_NO_COMPRESSION;
#ifdef HAVE_SSL_CTX_SET_MIN_PROTO_VERSION
if (RTEST(no_tlsv1_1)) {
min = TLS1_2_VERSION;
}
else if (RTEST(no_tlsv1)) {
min = TLS1_1_VERSION;
}
else {
min = TLS1_VERSION;
}
SSL_CTX_set_min_proto_version(ctx, min);
SSL_CTX_set_options(ctx, ssl_options);
#else
/* As of 1.0.2f, SSL_OP_SINGLE_DH_USE key use is always on */
ssl_options |= SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_SINGLE_DH_USE;
if (RTEST(no_tlsv1)) {
ssl_options |= SSL_OP_NO_TLSv1;
}
if(RTEST(no_tlsv1_1)) {
ssl_options |= SSL_OP_NO_TLSv1 | SSL_OP_NO_TLSv1_1;
}
SSL_CTX_set_options(ctx, ssl_options);
#endif
SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_OFF);
if (!NIL_P(ssl_cipher_filter)) {
StringValue(ssl_cipher_filter);
SSL_CTX_set_cipher_list(ctx, RSTRING_PTR(ssl_cipher_filter));
}
else {
SSL_CTX_set_cipher_list(ctx, "HIGH:!aNULL@STRENGTH");
}
DH *dh = get_dh1024();
SSL_CTX_set_tmp_dh(ctx, dh);
#if OPENSSL_VERSION_NUMBER < 0x10002000L
// Remove this case if OpenSSL 1.0.1 (now EOL) support is no
// longer needed.
EC_KEY *ecdh = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);
if (ecdh) {
SSL_CTX_set_tmp_ecdh(ctx, ecdh);
EC_KEY_free(ecdh);
}
#elif OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
// Prior to OpenSSL 1.1.0, servers must manually enable server-side ECDH
// negotiation.
SSL_CTX_set_ecdh_auto(ctx, 1);
#endif
ssl = SSL_new(ctx);
conn->ssl = ssl;
SSL_set_app_data(ssl, NULL);
if (NIL_P(verify_mode)) {
/* SSL_set_verify(ssl, SSL_VERIFY_NONE, NULL); */
} else {
SSL_set_verify(ssl, NUM2INT(verify_mode), engine_verify_callback);
}
SSL_set_bio(ssl, conn->read, conn->write);
SSL_set_accept_state(ssl);
return obj;
}
VALUE engine_init_client(VALUE klass) {
VALUE obj;
ms_conn* conn = engine_alloc(klass, &obj);
#ifdef HAVE_DTLS_METHOD
conn->ctx = SSL_CTX_new(DTLS_method());
#else
conn->ctx = SSL_CTX_new(DTLSv1_method());
#endif
conn->ssl = SSL_new(conn->ctx);
SSL_set_app_data(conn->ssl, NULL);
SSL_set_verify(conn->ssl, SSL_VERIFY_NONE, NULL);
SSL_set_bio(conn->ssl, conn->read, conn->write);
SSL_set_connect_state(conn->ssl);
return obj;
}
VALUE engine_inject(VALUE self, VALUE str) {
ms_conn* conn;
long used;
Data_Get_Struct(self, ms_conn, conn);
StringValue(str);
used = BIO_write(conn->read, RSTRING_PTR(str), (int)RSTRING_LEN(str));
if(used == 0 || used == -1) {
return Qfalse;
}
return INT2FIX(used);
}
static VALUE eError;
void raise_error(SSL* ssl, int result) {
char buf[512];
char msg[512];
const char* err_str;
int err = errno;
int ssl_err = SSL_get_error(ssl, result);
int verify_err = (int) SSL_get_verify_result(ssl);
if(SSL_ERROR_SYSCALL == ssl_err) {
snprintf(msg, sizeof(msg), "System error: %s - %d", strerror(err), err);
} else if(SSL_ERROR_SSL == ssl_err) {
if(X509_V_OK != verify_err) {
err_str = X509_verify_cert_error_string(verify_err);
snprintf(msg, sizeof(msg),
"OpenSSL certificate verification error: %s - %d",
err_str, verify_err);
} else {
err = (int) ERR_get_error();
ERR_error_string_n(err, buf, sizeof(buf));
snprintf(msg, sizeof(msg), "OpenSSL error: %s - %d", buf, err);
}
} else {
snprintf(msg, sizeof(msg), "Unknown OpenSSL error: %d", ssl_err);
}
ERR_clear_error();
rb_raise(eError, "%s", msg);
}
VALUE engine_read(VALUE self) {
ms_conn* conn;
char buf[512];
int bytes, error;
Data_Get_Struct(self, ms_conn, conn);
ERR_clear_error();
bytes = SSL_read(conn->ssl, (void*)buf, sizeof(buf));
if(bytes > 0) {
return rb_str_new(buf, bytes);
}
if(SSL_want_read(conn->ssl)) return Qnil;
error = SSL_get_error(conn->ssl, bytes);
if(error == SSL_ERROR_ZERO_RETURN) {
rb_eof_error();
} else {
raise_error(conn->ssl, bytes);
}
return Qnil;
}
VALUE engine_write(VALUE self, VALUE str) {
ms_conn* conn;
int bytes;
Data_Get_Struct(self, ms_conn, conn);
StringValue(str);
ERR_clear_error();
bytes = SSL_write(conn->ssl, (void*)RSTRING_PTR(str), (int)RSTRING_LEN(str));
if(bytes > 0) {
return INT2FIX(bytes);
}
if(SSL_want_write(conn->ssl)) return Qnil;
raise_error(conn->ssl, bytes);
return Qnil;
}
VALUE engine_extract(VALUE self) {
ms_conn* conn;
int bytes;
size_t pending;
char buf[512];
Data_Get_Struct(self, ms_conn, conn);
pending = BIO_pending(conn->write);
if(pending > 0) {
bytes = BIO_read(conn->write, buf, sizeof(buf));
if(bytes > 0) {
return rb_str_new(buf, bytes);
} else if(!BIO_should_retry(conn->write)) {
raise_error(conn->ssl, bytes);
}
}
return Qnil;
}
VALUE engine_shutdown(VALUE self) {
ms_conn* conn;
int ok;
Data_Get_Struct(self, ms_conn, conn);
ERR_clear_error();
ok = SSL_shutdown(conn->ssl);
if (ok == 0) {
return Qfalse;
}
return Qtrue;
}
VALUE engine_init(VALUE self) {
ms_conn* conn;
Data_Get_Struct(self, ms_conn, conn);
return SSL_in_init(conn->ssl) ? Qtrue : Qfalse;
}
VALUE engine_peercert(VALUE self) {
ms_conn* conn;
X509* cert;
int bytes;
unsigned char* buf = NULL;
ms_cert_buf* cert_buf = NULL;
VALUE rb_cert_buf;
Data_Get_Struct(self, ms_conn, conn);
cert = SSL_get_peer_certificate(conn->ssl);
if(!cert) {
/*
* See if there was a failed certificate associated with this client.
*/
cert_buf = (ms_cert_buf*)SSL_get_app_data(conn->ssl);
if(!cert_buf) {
return Qnil;
}
buf = cert_buf->buf;
bytes = cert_buf->bytes;
} else {
bytes = i2d_X509(cert, &buf);
X509_free(cert);
if(bytes < 0) {
return Qnil;
}
}
rb_cert_buf = rb_str_new((const char*)(buf), bytes);
if(!cert_buf) {
OPENSSL_free(buf);
}
return rb_cert_buf;
}
VALUE noop(VALUE self) {
return Qnil;
}
void Init_mini_ssl(VALUE puma) {
VALUE mod, eng;
/* Fake operation for documentation (RDoc, YARD) */
#if 0 == 1
puma = rb_define_module("Puma");
#endif
SSL_library_init();
OpenSSL_add_ssl_algorithms();
SSL_load_error_strings();
ERR_load_crypto_strings();
mod = rb_define_module_under(puma, "MiniSSL");
eng = rb_define_class_under(mod, "Engine", rb_cObject);
// OpenSSL Build / Runtime/Load versions
/* Version of OpenSSL that Puma was compiled with */
rb_define_const(mod, "OPENSSL_VERSION", rb_str_new2(OPENSSL_VERSION_TEXT));
#if !defined(LIBRESSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER >= 0x10100000
/* Version of OpenSSL that Puma loaded with */
rb_define_const(mod, "OPENSSL_LIBRARY_VERSION", rb_str_new2(OpenSSL_version(OPENSSL_VERSION)));
#else
rb_define_const(mod, "OPENSSL_LIBRARY_VERSION", rb_str_new2(SSLeay_version(SSLEAY_VERSION)));
#endif
#if defined(OPENSSL_NO_SSL3) || defined(OPENSSL_NO_SSL3_METHOD)
/* True if SSL3 is not available */
rb_define_const(mod, "OPENSSL_NO_SSL3", Qtrue);
#else
rb_define_const(mod, "OPENSSL_NO_SSL3", Qfalse);
#endif
#if defined(OPENSSL_NO_TLS1) || defined(OPENSSL_NO_TLS1_METHOD)
/* True if TLS1 is not available */
rb_define_const(mod, "OPENSSL_NO_TLS1", Qtrue);
#else
rb_define_const(mod, "OPENSSL_NO_TLS1", Qfalse);
#endif
#if defined(OPENSSL_NO_TLS1_1) || defined(OPENSSL_NO_TLS1_1_METHOD)
/* True if TLS1_1 is not available */
rb_define_const(mod, "OPENSSL_NO_TLS1_1", Qtrue);
#else
rb_define_const(mod, "OPENSSL_NO_TLS1_1", Qfalse);
#endif
rb_define_singleton_method(mod, "check", noop, 0);
eError = rb_define_class_under(mod, "SSLError", rb_eStandardError);
rb_define_singleton_method(eng, "server", engine_init_server, 1);
rb_define_singleton_method(eng, "client", engine_init_client, 0);
rb_define_method(eng, "inject", engine_inject, 1);
rb_define_method(eng, "read", engine_read, 0);
rb_define_method(eng, "write", engine_write, 1);
rb_define_method(eng, "extract", engine_extract, 0);
rb_define_method(eng, "shutdown", engine_shutdown, 0);
rb_define_method(eng, "init?", engine_init, 0);
rb_define_method(eng, "peercert", engine_peercert, 0);
}
#else
VALUE raise_error(VALUE self) {
rb_raise(rb_eStandardError, "SSL not available in this build");
return Qnil;
}
void Init_mini_ssl(VALUE puma) {
VALUE mod;
mod = rb_define_module_under(puma, "MiniSSL");
rb_define_class_under(mod, "SSLError", rb_eStandardError);
rb_define_singleton_method(mod, "check", raise_error, 0);
}
#endif
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