diff options
Diffstat (limited to 'vendor/bundle/ruby/3.4.0/gems/eventmachine-1.2.7/ext/ssl.cpp')
| -rw-r--r-- | vendor/bundle/ruby/3.4.0/gems/eventmachine-1.2.7/ext/ssl.cpp | 619 |
1 files changed, 619 insertions, 0 deletions
diff --git a/vendor/bundle/ruby/3.4.0/gems/eventmachine-1.2.7/ext/ssl.cpp b/vendor/bundle/ruby/3.4.0/gems/eventmachine-1.2.7/ext/ssl.cpp new file mode 100644 index 0000000..8d5e038 --- /dev/null +++ b/vendor/bundle/ruby/3.4.0/gems/eventmachine-1.2.7/ext/ssl.cpp @@ -0,0 +1,619 @@ +/***************************************************************************** + +$Id$ + +File: ssl.cpp +Date: 30Apr06 + +Copyright (C) 2006-07 by Francis Cianfrocca. All Rights Reserved. +Gmail: blackhedd + +This program is free software; you can redistribute it and/or modify +it under the terms of either: 1) the GNU General Public License +as published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version; or 2) Ruby's License. + +See the file COPYING for complete licensing information. + +*****************************************************************************/ + + +#ifdef WITH_SSL + +#include "project.h" + + +bool SslContext_t::bLibraryInitialized = false; + + + +static void InitializeDefaultCredentials(); +static EVP_PKEY *DefaultPrivateKey = NULL; +static X509 *DefaultCertificate = NULL; + +static char PrivateMaterials[] = { +"-----BEGIN RSA PRIVATE KEY-----\n" +"MIICXAIBAAKBgQDCYYhcw6cGRbhBVShKmbWm7UVsEoBnUf0cCh8AX+MKhMxwVDWV\n" +"Igdskntn3cSJjRtmgVJHIK0lpb/FYHQB93Ohpd9/Z18pDmovfFF9nDbFF0t39hJ/\n" +"AqSzFB3GiVPoFFZJEE1vJqh+3jzsSF5K56bZ6azz38VlZgXeSozNW5bXkQIDAQAB\n" +"AoGALA89gIFcr6BIBo8N5fL3aNHpZXjAICtGav+kTUpuxSiaym9cAeTHuAVv8Xgk\n" +"H2Wbq11uz+6JMLpkQJH/WZ7EV59DPOicXrp0Imr73F3EXBfR7t2EQDYHPMthOA1D\n" +"I9EtCzvV608Ze90hiJ7E3guGrGppZfJ+eUWCPgy8CZH1vRECQQDv67rwV/oU1aDo\n" +"6/+d5nqjeW6mWkGqTnUU96jXap8EIw6B+0cUKskwx6mHJv+tEMM2748ZY7b0yBlg\n" +"w4KDghbFAkEAz2h8PjSJG55LwqmXih1RONSgdN9hjB12LwXL1CaDh7/lkEhq0PlK\n" +"PCAUwQSdM17Sl0Xxm2CZiekTSlwmHrtqXQJAF3+8QJwtV2sRJp8u2zVe37IeH1cJ\n" +"xXeHyjTzqZ2803fnjN2iuZvzNr7noOA1/Kp+pFvUZUU5/0G2Ep8zolPUjQJAFA7k\n" +"xRdLkzIx3XeNQjwnmLlncyYPRv+qaE3FMpUu7zftuZBnVCJnvXzUxP3vPgKTlzGa\n" +"dg5XivDRfsV+okY5uQJBAMV4FesUuLQVEKb6lMs7rzZwpeGQhFDRfywJzfom2TLn\n" +"2RdJQQ3dcgnhdVDgt5o1qkmsqQh8uJrJ9SdyLIaZQIc=\n" +"-----END RSA PRIVATE KEY-----\n" +"-----BEGIN CERTIFICATE-----\n" +"MIID6TCCA1KgAwIBAgIJANm4W/Tzs+s+MA0GCSqGSIb3DQEBBQUAMIGqMQswCQYD\n" +"VQQGEwJVUzERMA8GA1UECBMITmV3IFlvcmsxETAPBgNVBAcTCE5ldyBZb3JrMRYw\n" +"FAYDVQQKEw1TdGVhbWhlYXQubmV0MRQwEgYDVQQLEwtFbmdpbmVlcmluZzEdMBsG\n" +"A1UEAxMUb3BlbmNhLnN0ZWFtaGVhdC5uZXQxKDAmBgkqhkiG9w0BCQEWGWVuZ2lu\n" +"ZWVyaW5nQHN0ZWFtaGVhdC5uZXQwHhcNMDYwNTA1MTcwNjAzWhcNMjQwMjIwMTcw\n" +"NjAzWjCBqjELMAkGA1UEBhMCVVMxETAPBgNVBAgTCE5ldyBZb3JrMREwDwYDVQQH\n" +"EwhOZXcgWW9yazEWMBQGA1UEChMNU3RlYW1oZWF0Lm5ldDEUMBIGA1UECxMLRW5n\n" +"aW5lZXJpbmcxHTAbBgNVBAMTFG9wZW5jYS5zdGVhbWhlYXQubmV0MSgwJgYJKoZI\n" +"hvcNAQkBFhllbmdpbmVlcmluZ0BzdGVhbWhlYXQubmV0MIGfMA0GCSqGSIb3DQEB\n" +"AQUAA4GNADCBiQKBgQDCYYhcw6cGRbhBVShKmbWm7UVsEoBnUf0cCh8AX+MKhMxw\n" +"VDWVIgdskntn3cSJjRtmgVJHIK0lpb/FYHQB93Ohpd9/Z18pDmovfFF9nDbFF0t3\n" +"9hJ/AqSzFB3GiVPoFFZJEE1vJqh+3jzsSF5K56bZ6azz38VlZgXeSozNW5bXkQID\n" +"AQABo4IBEzCCAQ8wHQYDVR0OBBYEFPJvPd1Fcmd8o/Tm88r+NjYPICCkMIHfBgNV\n" +"HSMEgdcwgdSAFPJvPd1Fcmd8o/Tm88r+NjYPICCkoYGwpIGtMIGqMQswCQYDVQQG\n" +"EwJVUzERMA8GA1UECBMITmV3IFlvcmsxETAPBgNVBAcTCE5ldyBZb3JrMRYwFAYD\n" +"VQQKEw1TdGVhbWhlYXQubmV0MRQwEgYDVQQLEwtFbmdpbmVlcmluZzEdMBsGA1UE\n" +"AxMUb3BlbmNhLnN0ZWFtaGVhdC5uZXQxKDAmBgkqhkiG9w0BCQEWGWVuZ2luZWVy\n" +"aW5nQHN0ZWFtaGVhdC5uZXSCCQDZuFv087PrPjAMBgNVHRMEBTADAQH/MA0GCSqG\n" +"SIb3DQEBBQUAA4GBAC1CXey/4UoLgJiwcEMDxOvW74plks23090iziFIlGgcIhk0\n" +"Df6hTAs7H3MWww62ddvR8l07AWfSzSP5L6mDsbvq7EmQsmPODwb6C+i2aF3EDL8j\n" +"uw73m4YIGI0Zw2XdBpiOGkx2H56Kya6mJJe/5XORZedh1wpI7zki01tHYbcy\n" +"-----END CERTIFICATE-----\n"}; + +/* These private materials were made with: + * openssl req -new -x509 -keyout cakey.pem -out cacert.pem -nodes -days 6500 + * TODO: We need a full-blown capability to work with user-supplied + * keypairs and properly-signed certificates. + */ + + +/***************** +builtin_passwd_cb +*****************/ + +extern "C" int builtin_passwd_cb (char *buf UNUSED, int bufsize UNUSED, int rwflag UNUSED, void *userdata UNUSED) +{ + strcpy (buf, "kittycat"); + return 8; +} + +/**************************** +InitializeDefaultCredentials +****************************/ + +static void InitializeDefaultCredentials() +{ + BIO *bio = BIO_new_mem_buf (PrivateMaterials, -1); + assert (bio); + + if (DefaultPrivateKey) { + // we may come here in a restart. + EVP_PKEY_free (DefaultPrivateKey); + DefaultPrivateKey = NULL; + } + PEM_read_bio_PrivateKey (bio, &DefaultPrivateKey, builtin_passwd_cb, 0); + + if (DefaultCertificate) { + // we may come here in a restart. + X509_free (DefaultCertificate); + DefaultCertificate = NULL; + } + PEM_read_bio_X509 (bio, &DefaultCertificate, NULL, 0); + + BIO_free (bio); +} + + + +/************************** +SslContext_t::SslContext_t +**************************/ + +SslContext_t::SslContext_t (bool is_server, const std::string &privkeyfile, const std::string &certchainfile, const std::string &cipherlist, const std::string &ecdh_curve, const std::string &dhparam, int ssl_version) : + bIsServer (is_server), + pCtx (NULL), + PrivateKey (NULL), + Certificate (NULL) +{ + /* TODO: the usage of the specified private-key and cert-chain filenames only applies to + * client-side connections at this point. Server connections currently use the default materials. + * That needs to be fixed asap. + * Also, in this implementation, server-side connections use statically defined X-509 defaults. + * One thing I'm really not clear on is whether or not you have to explicitly free X509 and EVP_PKEY + * objects when we call our destructor, or whether just calling SSL_CTX_free is enough. + */ + + if (!bLibraryInitialized) { + bLibraryInitialized = true; + SSL_library_init(); + OpenSSL_add_ssl_algorithms(); + OpenSSL_add_all_algorithms(); + SSL_load_error_strings(); + ERR_load_crypto_strings(); + + InitializeDefaultCredentials(); + } + + pCtx = SSL_CTX_new (bIsServer ? SSLv23_server_method() : SSLv23_client_method()); + if (!pCtx) + throw std::runtime_error ("no SSL context"); + + SSL_CTX_set_options (pCtx, SSL_OP_ALL); + + #ifdef SSL_CTRL_CLEAR_OPTIONS + SSL_CTX_clear_options (pCtx, SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3|SSL_OP_NO_TLSv1); + # ifdef SSL_OP_NO_TLSv1_1 + SSL_CTX_clear_options (pCtx, SSL_OP_NO_TLSv1_1); + # endif + # ifdef SSL_OP_NO_TLSv1_2 + SSL_CTX_clear_options (pCtx, SSL_OP_NO_TLSv1_2); + # endif + #endif + + if (!(ssl_version & EM_PROTO_SSLv2)) + SSL_CTX_set_options (pCtx, SSL_OP_NO_SSLv2); + + if (!(ssl_version & EM_PROTO_SSLv3)) + SSL_CTX_set_options (pCtx, SSL_OP_NO_SSLv3); + + if (!(ssl_version & EM_PROTO_TLSv1)) + SSL_CTX_set_options (pCtx, SSL_OP_NO_TLSv1); + + #ifdef SSL_OP_NO_TLSv1_1 + if (!(ssl_version & EM_PROTO_TLSv1_1)) + SSL_CTX_set_options (pCtx, SSL_OP_NO_TLSv1_1); + #endif + + #ifdef SSL_OP_NO_TLSv1_2 + if (!(ssl_version & EM_PROTO_TLSv1_2)) + SSL_CTX_set_options (pCtx, SSL_OP_NO_TLSv1_2); + #endif + + #ifdef SSL_MODE_RELEASE_BUFFERS + SSL_CTX_set_mode (pCtx, SSL_MODE_RELEASE_BUFFERS); + #endif + + if (bIsServer) { + + // The SSL_CTX calls here do NOT allocate memory. + int e; + if (privkeyfile.length() > 0) + e = SSL_CTX_use_PrivateKey_file (pCtx, privkeyfile.c_str(), SSL_FILETYPE_PEM); + else + e = SSL_CTX_use_PrivateKey (pCtx, DefaultPrivateKey); + if (e <= 0) ERR_print_errors_fp(stderr); + assert (e > 0); + + if (certchainfile.length() > 0) + e = SSL_CTX_use_certificate_chain_file (pCtx, certchainfile.c_str()); + else + e = SSL_CTX_use_certificate (pCtx, DefaultCertificate); + if (e <= 0) ERR_print_errors_fp(stderr); + assert (e > 0); + + if (dhparam.length() > 0) { + DH *dh; + BIO *bio; + + bio = BIO_new_file(dhparam.c_str(), "r"); + if (bio == NULL) { + char buf [500]; + snprintf (buf, sizeof(buf)-1, "dhparam: BIO_new_file(%s) failed", dhparam.c_str()); + throw std::runtime_error (buf); + } + + dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL); + + if (dh == NULL) { + BIO_free(bio); + char buf [500]; + snprintf (buf, sizeof(buf)-1, "dhparam: PEM_read_bio_DHparams(%s) failed", dhparam.c_str()); + throw std::runtime_error (buf); + } + + SSL_CTX_set_tmp_dh(pCtx, dh); + + DH_free(dh); + BIO_free(bio); + } + + if (ecdh_curve.length() > 0) { + #if OPENSSL_VERSION_NUMBER >= 0x0090800fL && !defined(OPENSSL_NO_ECDH) + int nid; + EC_KEY *ecdh; + + nid = OBJ_sn2nid((const char *) ecdh_curve.c_str()); + if (nid == 0) { + char buf [200]; + snprintf (buf, sizeof(buf)-1, "ecdh_curve: Unknown curve name: %s", ecdh_curve.c_str()); + throw std::runtime_error (buf); + } + + ecdh = EC_KEY_new_by_curve_name(nid); + if (ecdh == NULL) { + char buf [200]; + snprintf (buf, sizeof(buf)-1, "ecdh_curve: Unable to create: %s", ecdh_curve.c_str()); + throw std::runtime_error (buf); + } + + SSL_CTX_set_options(pCtx, SSL_OP_SINGLE_ECDH_USE); + + SSL_CTX_set_tmp_ecdh(pCtx, ecdh); + + EC_KEY_free(ecdh); + #else + throw std::runtime_error ("No openssl ECDH support"); + #endif + } + } + + if (cipherlist.length() > 0) + SSL_CTX_set_cipher_list (pCtx, cipherlist.c_str()); + else + SSL_CTX_set_cipher_list (pCtx, "ALL:!ADH:!LOW:!EXP:!DES-CBC3-SHA:@STRENGTH"); + + if (bIsServer) { + SSL_CTX_sess_set_cache_size (pCtx, 128); + SSL_CTX_set_session_id_context (pCtx, (unsigned char*)"eventmachine", 12); + } + else { + int e; + if (privkeyfile.length() > 0) { + e = SSL_CTX_use_PrivateKey_file (pCtx, privkeyfile.c_str(), SSL_FILETYPE_PEM); + if (e <= 0) ERR_print_errors_fp(stderr); + assert (e > 0); + } + if (certchainfile.length() > 0) { + e = SSL_CTX_use_certificate_chain_file (pCtx, certchainfile.c_str()); + if (e <= 0) ERR_print_errors_fp(stderr); + assert (e > 0); + } + } +} + + + +/*************************** +SslContext_t::~SslContext_t +***************************/ + +SslContext_t::~SslContext_t() +{ + if (pCtx) + SSL_CTX_free (pCtx); + if (PrivateKey) + EVP_PKEY_free (PrivateKey); + if (Certificate) + X509_free (Certificate); +} + + + +/****************** +SslBox_t::SslBox_t +******************/ + +SslBox_t::SslBox_t (bool is_server, const std::string &privkeyfile, const std::string &certchainfile, bool verify_peer, bool fail_if_no_peer_cert, const std::string &snihostname, const std::string &cipherlist, const std::string &ecdh_curve, const std::string &dhparam, int ssl_version, const uintptr_t binding): + bIsServer (is_server), + bHandshakeCompleted (false), + bVerifyPeer (verify_peer), + bFailIfNoPeerCert (fail_if_no_peer_cert), + pSSL (NULL), + pbioRead (NULL), + pbioWrite (NULL) +{ + /* TODO someday: make it possible to re-use SSL contexts so we don't have to create + * a new one every time we come here. + */ + + Context = new SslContext_t (bIsServer, privkeyfile, certchainfile, cipherlist, ecdh_curve, dhparam, ssl_version); + assert (Context); + + pbioRead = BIO_new (BIO_s_mem()); + assert (pbioRead); + + pbioWrite = BIO_new (BIO_s_mem()); + assert (pbioWrite); + + pSSL = SSL_new (Context->pCtx); + assert (pSSL); + + if (snihostname.length() > 0) { + SSL_set_tlsext_host_name (pSSL, snihostname.c_str()); + } + + SSL_set_bio (pSSL, pbioRead, pbioWrite); + + // Store a pointer to the binding signature in the SSL object so we can retrieve it later + SSL_set_ex_data(pSSL, 0, (void*) binding); + + if (bVerifyPeer) { + int mode = SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE; + if (bFailIfNoPeerCert) + mode = mode | SSL_VERIFY_FAIL_IF_NO_PEER_CERT; + SSL_set_verify(pSSL, mode, ssl_verify_wrapper); + } + + if (!bIsServer) { + int e = SSL_connect (pSSL); + if (e != 1) + ERR_print_errors_fp(stderr); + } +} + + + +/******************* +SslBox_t::~SslBox_t +*******************/ + +SslBox_t::~SslBox_t() +{ + // Freeing pSSL will also free the associated BIOs, so DON'T free them separately. + if (pSSL) { + if (SSL_get_shutdown (pSSL) & SSL_RECEIVED_SHUTDOWN) + SSL_shutdown (pSSL); + else + SSL_clear (pSSL); + SSL_free (pSSL); + } + + delete Context; +} + + + +/*********************** +SslBox_t::PutCiphertext +***********************/ + +bool SslBox_t::PutCiphertext (const char *buf, int bufsize) +{ + assert (buf && (bufsize > 0)); + + assert (pbioRead); + int n = BIO_write (pbioRead, buf, bufsize); + + return (n == bufsize) ? true : false; +} + + +/********************** +SslBox_t::GetPlaintext +**********************/ + +int SslBox_t::GetPlaintext (char *buf, int bufsize) +{ + if (!SSL_is_init_finished (pSSL)) { + int e = bIsServer ? SSL_accept (pSSL) : SSL_connect (pSSL); + if (e != 1) { + int er = SSL_get_error (pSSL, e); + if (er != SSL_ERROR_WANT_READ) { + ERR_print_errors_fp(stderr); + // Return -1 for a nonfatal error, -2 for an error that should force the connection down. + return (er == SSL_ERROR_SSL) ? (-2) : (-1); + } + else + return 0; + } + bHandshakeCompleted = true; + // If handshake finished, FALL THROUGH and return the available plaintext. + } + + if (!SSL_is_init_finished (pSSL)) { + // We can get here if a browser abandons a handshake. + // The user can see a warning dialog and abort the connection. + //cerr << "<SSL_incomp>"; + return 0; + } + + //cerr << "CIPH: " << SSL_get_cipher (pSSL) << endl; + + int n = SSL_read (pSSL, buf, bufsize); + if (n >= 0) { + return n; + } + else { + if (SSL_get_error (pSSL, n) == SSL_ERROR_WANT_READ) { + return 0; + } + else { + return -1; + } + } + + return 0; +} + + + +/************************** +SslBox_t::CanGetCiphertext +**************************/ + +bool SslBox_t::CanGetCiphertext() +{ + assert (pbioWrite); + return BIO_pending (pbioWrite) ? true : false; +} + + + +/*********************** +SslBox_t::GetCiphertext +***********************/ + +int SslBox_t::GetCiphertext (char *buf, int bufsize) +{ + assert (pbioWrite); + assert (buf && (bufsize > 0)); + + return BIO_read (pbioWrite, buf, bufsize); +} + + + +/********************** +SslBox_t::PutPlaintext +**********************/ + +int SslBox_t::PutPlaintext (const char *buf, int bufsize) +{ + // The caller will interpret the return value as the number of bytes written. + // WARNING WARNING WARNING, are there any situations in which a 0 or -1 return + // from SSL_write means we should immediately retry? The socket-machine loop + // will probably wait for a time-out cycle (perhaps a second) before re-trying. + // THIS WOULD CAUSE A PERCEPTIBLE DELAY! + + /* We internally queue any outbound plaintext that can't be dispatched + * because we're in the middle of a handshake or something. + * When we get called, try to send any queued data first, and then + * send the caller's data (or queue it). We may get called with no outbound + * data, which means we try to send the outbound queue and that's all. + * + * Return >0 if we wrote any data, 0 if we didn't, and <0 for a fatal error. + * Note that if we return 0, the connection is still considered live + * and we are signalling that we have accepted the outbound data (if any). + */ + + OutboundQ.Push (buf, bufsize); + + if (!SSL_is_init_finished (pSSL)) + return 0; + + bool fatal = false; + bool did_work = false; + int pending = BIO_pending(pbioWrite); + + while (OutboundQ.HasPages() && pending < SSLBOX_WRITE_BUFFER_SIZE) { + const char *page; + int length; + OutboundQ.Front (&page, &length); + assert (page && (length > 0)); + int n = SSL_write (pSSL, page, length); + pending = BIO_pending(pbioWrite); + + if (n > 0) { + did_work = true; + OutboundQ.PopFront(); + } + else { + int er = SSL_get_error (pSSL, n); + if ((er != SSL_ERROR_WANT_READ) && (er != SSL_ERROR_WANT_WRITE)) + fatal = true; + break; + } + } + + + if (did_work) + return 1; + else if (fatal) + return -1; + else + return 0; +} + +/********************** +SslBox_t::GetPeerCert +**********************/ + +X509 *SslBox_t::GetPeerCert() +{ + X509 *cert = NULL; + + if (pSSL) + cert = SSL_get_peer_certificate(pSSL); + + return cert; +} + +/********************** +SslBox_t::GetCipherBits +**********************/ + +int SslBox_t::GetCipherBits() +{ + int bits = -1; + if (pSSL) + SSL_get_cipher_bits(pSSL, &bits); + return bits; +} + +/********************** +SslBox_t::GetCipherName +**********************/ + +const char *SslBox_t::GetCipherName() +{ + if (pSSL) + return SSL_get_cipher_name(pSSL); + return NULL; +} + +/********************** +SslBox_t::GetCipherProtocol +**********************/ + +const char *SslBox_t::GetCipherProtocol() +{ + if (pSSL) + return SSL_get_cipher_version(pSSL); + return NULL; +} + +/********************** +SslBox_t::GetSNIHostname +**********************/ + +const char *SslBox_t::GetSNIHostname() +{ + #ifdef TLSEXT_NAMETYPE_host_name + if (pSSL) + return SSL_get_servername (pSSL, TLSEXT_NAMETYPE_host_name); + #endif + return NULL; +} + +/****************** +ssl_verify_wrapper +*******************/ + +extern "C" int ssl_verify_wrapper(int preverify_ok UNUSED, X509_STORE_CTX *ctx) +{ + uintptr_t binding; + X509 *cert; + SSL *ssl; + BUF_MEM *buf; + BIO *out; + int result; + + cert = X509_STORE_CTX_get_current_cert(ctx); + ssl = (SSL*) X509_STORE_CTX_get_ex_data(ctx, SSL_get_ex_data_X509_STORE_CTX_idx()); + binding = (uintptr_t) SSL_get_ex_data(ssl, 0); + + out = BIO_new(BIO_s_mem()); + PEM_write_bio_X509(out, cert); + BIO_write(out, "\0", 1); + BIO_get_mem_ptr(out, &buf); + + ConnectionDescriptor *cd = dynamic_cast <ConnectionDescriptor*> (Bindable_t::GetObject(binding)); + result = (cd->VerifySslPeer(buf->data) == true ? 1 : 0); + BIO_free(out); + + return result; +} + +#endif // WITH_SSL + |
