/* * Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved. * Copyright 2005 Nokia. All rights reserved. * * Licensed under the Apache License 2.0 (the "License"). You may not use * this file except in compliance with the License. You can obtain a copy * in the file LICENSE in the source distribution or at * https://www.openssl.org/source/license.html */ #include "internal/e_os.h" #include #include #include #include #include #include #include "internal/nelem.h" #ifndef OPENSSL_NO_SOCK /* * With IPv6, it looks like Digital has mixed up the proper order of * recursive header file inclusion, resulting in the compiler complaining * that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which is * needed to have fileno() declared correctly... So let's define u_int */ #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT) # define __U_INT typedef unsigned int u_int; #endif #include "apps.h" #include "progs.h" #include #include #include #include #include #include #include #include #include #ifndef OPENSSL_NO_CT # include #endif #include "s_apps.h" #include "timeouts.h" #include "internal/sockets.h" #if defined(__has_feature) # if __has_feature(memory_sanitizer) # include # endif #endif #undef BUFSIZZ #define BUFSIZZ 1024*16 #define S_CLIENT_IRC_READ_TIMEOUT 8 #define USER_DATA_MODE_NONE 0 #define USER_DATA_MODE_BASIC 1 #define USER_DATA_MODE_ADVANCED 2 #define USER_DATA_PROCESS_BAD_ARGUMENT 0 #define USER_DATA_PROCESS_SHUT 1 #define USER_DATA_PROCESS_RESTART 2 #define USER_DATA_PROCESS_NO_DATA 3 #define USER_DATA_PROCESS_CONTINUE 4 struct user_data_st { /* SSL connection we are processing commands for */ SSL *con; /* Buffer where we are storing data supplied by the user */ char *buf; /* Allocated size of the buffer */ size_t bufmax; /* Amount of the buffer actually used */ size_t buflen; /* Current location in the buffer where we will read from next*/ size_t bufoff; /* The mode we are using for processing commands */ int mode; /* Whether FIN has ben sent on the stream */ int isfin; }; static void user_data_init(struct user_data_st *user_data, SSL *con, char *buf, size_t bufmax, int mode); static int user_data_add(struct user_data_st *user_data, size_t i); static int user_data_process(struct user_data_st *user_data, size_t *len, size_t *off); static int user_data_has_data(struct user_data_st *user_data); static char *prog; static int c_debug = 0; static int c_showcerts = 0; static char *keymatexportlabel = NULL; static int keymatexportlen = 20; static BIO *bio_c_out = NULL; static int c_quiet = 0; static char *sess_out = NULL; static SSL_SESSION *psksess = NULL; static void print_stuff(BIO *berr, SSL *con, int full); #ifndef OPENSSL_NO_OCSP static int ocsp_resp_cb(SSL *s, void *arg); #endif static int ldap_ExtendedResponse_parse(const char *buf, long rem); static int is_dNS_name(const char *host); static const unsigned char cert_type_rpk[] = { TLSEXT_cert_type_rpk, TLSEXT_cert_type_x509 }; static int enable_server_rpk = 0; static int saved_errno; static void save_errno(void) { saved_errno = errno; errno = 0; } static int restore_errno(void) { int ret = errno; errno = saved_errno; return ret; } /* Default PSK identity and key */ static char *psk_identity = "Client_identity"; #ifndef OPENSSL_NO_PSK static unsigned int psk_client_cb(SSL *ssl, const char *hint, char *identity, unsigned int max_identity_len, unsigned char *psk, unsigned int max_psk_len) { int ret; long key_len; unsigned char *key; if (c_debug) BIO_printf(bio_c_out, "psk_client_cb\n"); if (!hint) { /* no ServerKeyExchange message */ if (c_debug) BIO_printf(bio_c_out, "NULL received PSK identity hint, continuing anyway\n"); } else if (c_debug) { BIO_printf(bio_c_out, "Received PSK identity hint '%s'\n", hint); } /* * lookup PSK identity and PSK key based on the given identity hint here */ ret = BIO_snprintf(identity, max_identity_len, "%s", psk_identity); if (ret < 0 || (unsigned int)ret > max_identity_len) goto out_err; if (c_debug) BIO_printf(bio_c_out, "created identity '%s' len=%d\n", identity, ret); /* convert the PSK key to binary */ key = OPENSSL_hexstr2buf(psk_key, &key_len); if (key == NULL) { BIO_printf(bio_err, "Could not convert PSK key '%s' to buffer\n", psk_key); return 0; } if (max_psk_len > INT_MAX || key_len > (long)max_psk_len) { BIO_printf(bio_err, "psk buffer of callback is too small (%d) for key (%ld)\n", max_psk_len, key_len); OPENSSL_free(key); return 0; } memcpy(psk, key, key_len); OPENSSL_free(key); if (c_debug) BIO_printf(bio_c_out, "created PSK len=%ld\n", key_len); return key_len; out_err: if (c_debug) BIO_printf(bio_err, "Error in PSK client callback\n"); return 0; } #endif const unsigned char tls13_aes128gcmsha256_id[] = { 0x13, 0x01 }; const unsigned char tls13_aes256gcmsha384_id[] = { 0x13, 0x02 }; static int psk_use_session_cb(SSL *s, const EVP_MD *md, const unsigned char **id, size_t *idlen, SSL_SESSION **sess) { SSL_SESSION *usesess = NULL; const SSL_CIPHER *cipher = NULL; if (psksess != NULL) { SSL_SESSION_up_ref(psksess); usesess = psksess; } else { long key_len; unsigned char *key = OPENSSL_hexstr2buf(psk_key, &key_len); if (key == NULL) { BIO_printf(bio_err, "Could not convert PSK key '%s' to buffer\n", psk_key); return 0; } /* We default to SHA-256 */ cipher = SSL_CIPHER_find(s, tls13_aes128gcmsha256_id); if (cipher == NULL) { BIO_printf(bio_err, "Error finding suitable ciphersuite\n"); OPENSSL_free(key); return 0; } usesess = SSL_SESSION_new(); if (usesess == NULL || !SSL_SESSION_set1_master_key(usesess, key, key_len) || !SSL_SESSION_set_cipher(usesess, cipher) || !SSL_SESSION_set_protocol_version(usesess, TLS1_3_VERSION)) { OPENSSL_free(key); goto err; } OPENSSL_free(key); } cipher = SSL_SESSION_get0_cipher(usesess); if (cipher == NULL) goto err; if (md != NULL && SSL_CIPHER_get_handshake_digest(cipher) != md) { /* PSK not usable, ignore it */ *id = NULL; *idlen = 0; *sess = NULL; SSL_SESSION_free(usesess); } else { *sess = usesess; *id = (unsigned char *)psk_identity; *idlen = strlen(psk_identity); } return 1; err: SSL_SESSION_free(usesess); return 0; } /* This is a context that we pass to callbacks */ typedef struct tlsextctx_st { BIO *biodebug; int ack; } tlsextctx; static int ssl_servername_cb(SSL *s, int *ad, void *arg) { tlsextctx *p = (tlsextctx *) arg; const char *hn = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name); if (SSL_get_servername_type(s) != -1) p->ack = !SSL_session_reused(s) && hn != NULL; else BIO_printf(bio_err, "Can't use SSL_get_servername\n"); return SSL_TLSEXT_ERR_OK; } #ifndef OPENSSL_NO_NEXTPROTONEG /* This the context that we pass to next_proto_cb */ typedef struct tlsextnextprotoctx_st { unsigned char *data; size_t len; int status; } tlsextnextprotoctx; static tlsextnextprotoctx next_proto; static int next_proto_cb(SSL *s, unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg) { tlsextnextprotoctx *ctx = arg; if (!c_quiet) { /* We can assume that |in| is syntactically valid. */ unsigned i; BIO_printf(bio_c_out, "Protocols advertised by server: "); for (i = 0; i < inlen;) { if (i) BIO_write(bio_c_out, ", ", 2); BIO_write(bio_c_out, &in[i + 1], in[i]); i += in[i] + 1; } BIO_write(bio_c_out, "\n", 1); } ctx->status = SSL_select_next_proto(out, outlen, in, inlen, ctx->data, ctx->len); return SSL_TLSEXT_ERR_OK; } #endif /* ndef OPENSSL_NO_NEXTPROTONEG */ static int serverinfo_cli_parse_cb(SSL *s, unsigned int ext_type, const unsigned char *in, size_t inlen, int *al, void *arg) { char pem_name[100]; unsigned char ext_buf[4 + 65536]; /* Reconstruct the type/len fields prior to extension data */ inlen &= 0xffff; /* for formal memcmpy correctness */ ext_buf[0] = (unsigned char)(ext_type >> 8); ext_buf[1] = (unsigned char)(ext_type); ext_buf[2] = (unsigned char)(inlen >> 8); ext_buf[3] = (unsigned char)(inlen); memcpy(ext_buf + 4, in, inlen); BIO_snprintf(pem_name, sizeof(pem_name), "SERVERINFO FOR EXTENSION %d", ext_type); PEM_write_bio(bio_c_out, pem_name, "", ext_buf, 4 + inlen); return 1; } /* * Hex decoder that tolerates optional whitespace. Returns number of bytes * produced, advances inptr to end of input string. */ static ossl_ssize_t hexdecode(const char **inptr, void *result) { unsigned char **out = (unsigned char **)result; const char *in = *inptr; unsigned char *ret = app_malloc(strlen(in) / 2, "hexdecode"); unsigned char *cp = ret; uint8_t byte; int nibble = 0; if (ret == NULL) return -1; for (byte = 0; *in; ++in) { int x; if (isspace(_UC(*in))) continue; x = OPENSSL_hexchar2int(*in); if (x < 0) { OPENSSL_free(ret); return 0; } byte |= (char)x; if ((nibble ^= 1) == 0) { *cp++ = byte; byte = 0; } else { byte <<= 4; } } if (nibble != 0) { OPENSSL_free(ret); return 0; } *inptr = in; return cp - (*out = ret); } /* * Decode unsigned 0..255, returns 1 on success, <= 0 on failure. Advances * inptr to next field skipping leading whitespace. */ static ossl_ssize_t checked_uint8(const char **inptr, void *out) { uint8_t *result = (uint8_t *)out; const char *in = *inptr; char *endp; long v; int e; save_errno(); v = strtol(in, &endp, 10); e = restore_errno(); if (((v == LONG_MIN || v == LONG_MAX) && e == ERANGE) || endp == in || !isspace(_UC(*endp)) || v != (*result = (uint8_t) v)) { return -1; } for (in = endp; isspace(_UC(*in)); ++in) continue; *inptr = in; return 1; } struct tlsa_field { void *var; const char *name; ossl_ssize_t (*parser)(const char **, void *); }; static int tlsa_import_rr(SSL *con, const char *rrdata) { /* Not necessary to re-init these values; the "parsers" do that. */ static uint8_t usage; static uint8_t selector; static uint8_t mtype; static unsigned char *data; static struct tlsa_field tlsa_fields[] = { { &usage, "usage", checked_uint8 }, { &selector, "selector", checked_uint8 }, { &mtype, "mtype", checked_uint8 }, { &data, "data", hexdecode }, { NULL, } }; struct tlsa_field *f; int ret; const char *cp = rrdata; ossl_ssize_t len = 0; for (f = tlsa_fields; f->var; ++f) { /* Returns number of bytes produced, advances cp to next field */ if ((len = f->parser(&cp, f->var)) <= 0) { BIO_printf(bio_err, "%s: warning: bad TLSA %s field in: %s\n", prog, f->name, rrdata); return 0; } } /* The data field is last, so len is its length */ ret = SSL_dane_tlsa_add(con, usage, selector, mtype, data, len); OPENSSL_free(data); if (ret == 0) { ERR_print_errors(bio_err); BIO_printf(bio_err, "%s: warning: unusable TLSA rrdata: %s\n", prog, rrdata); return 0; } if (ret < 0) { ERR_print_errors(bio_err); BIO_printf(bio_err, "%s: warning: error loading TLSA rrdata: %s\n", prog, rrdata); return 0; } return ret; } static int tlsa_import_rrset(SSL *con, STACK_OF(OPENSSL_STRING) *rrset) { int num = sk_OPENSSL_STRING_num(rrset); int count = 0; int i; for (i = 0; i < num; ++i) { char *rrdata = sk_OPENSSL_STRING_value(rrset, i); if (tlsa_import_rr(con, rrdata) > 0) ++count; } return count > 0; } typedef enum OPTION_choice { OPT_COMMON, OPT_4, OPT_6, OPT_HOST, OPT_PORT, OPT_CONNECT, OPT_BIND, OPT_UNIX, OPT_XMPPHOST, OPT_VERIFY, OPT_NAMEOPT, OPT_CERT, OPT_CRL, OPT_CRL_DOWNLOAD, OPT_SESS_OUT, OPT_SESS_IN, OPT_CERTFORM, OPT_CRLFORM, OPT_VERIFY_RET_ERROR, OPT_VERIFY_QUIET, OPT_BRIEF, OPT_PREXIT, OPT_NO_INTERACTIVE, OPT_CRLF, OPT_QUIET, OPT_NBIO, OPT_SSL_CLIENT_ENGINE, OPT_IGN_EOF, OPT_NO_IGN_EOF, OPT_DEBUG, OPT_TLSEXTDEBUG, OPT_STATUS, OPT_WDEBUG, OPT_MSG, OPT_MSGFILE, OPT_ENGINE, OPT_TRACE, OPT_SECURITY_DEBUG, OPT_SECURITY_DEBUG_VERBOSE, OPT_SHOWCERTS, OPT_NBIO_TEST, OPT_STATE, OPT_PSK_IDENTITY, OPT_PSK, OPT_PSK_SESS, #ifndef OPENSSL_NO_SRP OPT_SRPUSER, OPT_SRPPASS, OPT_SRP_STRENGTH, OPT_SRP_LATEUSER, OPT_SRP_MOREGROUPS, #endif OPT_SSL3, OPT_SSL_CONFIG, OPT_TLS1_3, OPT_TLS1_2, OPT_TLS1_1, OPT_TLS1, OPT_DTLS, OPT_DTLS1, OPT_DTLS1_2, OPT_QUIC, OPT_SCTP, OPT_TIMEOUT, OPT_MTU, OPT_KEYFORM, OPT_PASS, OPT_CERT_CHAIN, OPT_KEY, OPT_RECONNECT, OPT_BUILD_CHAIN, OPT_NEXTPROTONEG, OPT_ALPN, OPT_CAPATH, OPT_NOCAPATH, OPT_CHAINCAPATH, OPT_VERIFYCAPATH, OPT_CAFILE, OPT_NOCAFILE, OPT_CHAINCAFILE, OPT_VERIFYCAFILE, OPT_CASTORE, OPT_NOCASTORE, OPT_CHAINCASTORE, OPT_VERIFYCASTORE, OPT_SERVERINFO, OPT_STARTTLS, OPT_SERVERNAME, OPT_NOSERVERNAME, OPT_ASYNC, OPT_USE_SRTP, OPT_KEYMATEXPORT, OPT_KEYMATEXPORTLEN, OPT_PROTOHOST, OPT_MAXFRAGLEN, OPT_MAX_SEND_FRAG, OPT_SPLIT_SEND_FRAG, OPT_MAX_PIPELINES, OPT_READ_BUF, OPT_KEYLOG_FILE, OPT_EARLY_DATA, OPT_REQCAFILE, OPT_TFO, OPT_V_ENUM, OPT_X_ENUM, OPT_S_ENUM, OPT_IGNORE_UNEXPECTED_EOF, OPT_FALLBACKSCSV, OPT_NOCMDS, OPT_ADV, OPT_PROXY, OPT_PROXY_USER, OPT_PROXY_PASS, OPT_DANE_TLSA_DOMAIN, #ifndef OPENSSL_NO_CT OPT_CT, OPT_NOCT, OPT_CTLOG_FILE, #endif OPT_DANE_TLSA_RRDATA, OPT_DANE_EE_NO_NAME, OPT_ENABLE_PHA, OPT_ENABLE_SERVER_RPK, OPT_ENABLE_CLIENT_RPK, OPT_SCTP_LABEL_BUG, OPT_KTLS, OPT_R_ENUM, OPT_PROV_ENUM } OPTION_CHOICE; const OPTIONS s_client_options[] = { {OPT_HELP_STR, 1, '-', "Usage: %s [options] [host:port]\n"}, OPT_SECTION("General"), {"help", OPT_HELP, '-', "Display this summary"}, #ifndef OPENSSL_NO_ENGINE {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, {"ssl_client_engine", OPT_SSL_CLIENT_ENGINE, 's', "Specify engine to be used for client certificate operations"}, #endif {"ssl_config", OPT_SSL_CONFIG, 's', "Use specified section for SSL_CTX configuration"}, #ifndef OPENSSL_NO_CT {"ct", OPT_CT, '-', "Request and parse SCTs (also enables OCSP stapling)"}, {"noct", OPT_NOCT, '-', "Do not request or parse SCTs (default)"}, {"ctlogfile", OPT_CTLOG_FILE, '<', "CT log list CONF file"}, #endif OPT_SECTION("Network"), {"host", OPT_HOST, 's', "Use -connect instead"}, {"port", OPT_PORT, 'p', "Use -connect instead"}, {"connect", OPT_CONNECT, 's', "TCP/IP where to connect; default: " PORT ")"}, {"bind", OPT_BIND, 's', "bind local address for connection"}, {"proxy", OPT_PROXY, 's', "Connect to via specified proxy to the real server"}, {"proxy_user", OPT_PROXY_USER, 's', "UserID for proxy authentication"}, {"proxy_pass", OPT_PROXY_PASS, 's', "Proxy authentication password source"}, #ifdef AF_UNIX {"unix", OPT_UNIX, 's', "Connect over the specified Unix-domain socket"}, #endif {"4", OPT_4, '-', "Use IPv4 only"}, #ifdef AF_INET6 {"6", OPT_6, '-', "Use IPv6 only"}, #endif {"maxfraglen", OPT_MAXFRAGLEN, 'p', "Enable Maximum Fragment Length Negotiation (len values: 512, 1024, 2048 and 4096)"}, {"max_send_frag", OPT_MAX_SEND_FRAG, 'p', "Maximum Size of send frames "}, {"split_send_frag", OPT_SPLIT_SEND_FRAG, 'p', "Size used to split data for encrypt pipelines"}, {"max_pipelines", OPT_MAX_PIPELINES, 'p', "Maximum number of encrypt/decrypt pipelines to be used"}, {"read_buf", OPT_READ_BUF, 'p', "Default read buffer size to be used for connections"}, {"fallback_scsv", OPT_FALLBACKSCSV, '-', "Send the fallback SCSV"}, OPT_SECTION("Identity"), {"cert", OPT_CERT, '<', "Client certificate file to use"}, {"certform", OPT_CERTFORM, 'F', "Client certificate file format (PEM/DER/P12); has no effect"}, {"cert_chain", OPT_CERT_CHAIN, '<', "Client certificate chain file (in PEM format)"}, {"build_chain", OPT_BUILD_CHAIN, '-', "Build client certificate chain"}, {"key", OPT_KEY, 's', "Private key file to use; default: -cert file"}, {"keyform", OPT_KEYFORM, 'E', "Key format (ENGINE, other values ignored)"}, {"pass", OPT_PASS, 's', "Private key and cert file pass phrase source"}, {"verify", OPT_VERIFY, 'p', "Turn on peer certificate verification"}, {"nameopt", OPT_NAMEOPT, 's', "Certificate subject/issuer name printing options"}, {"CApath", OPT_CAPATH, '/', "PEM format directory of CA's"}, {"CAfile", OPT_CAFILE, '<', "PEM format file of CA's"}, {"CAstore", OPT_CASTORE, ':', "URI to store of CA's"}, {"no-CAfile", OPT_NOCAFILE, '-', "Do not load the default certificates file"}, {"no-CApath", OPT_NOCAPATH, '-', "Do not load certificates from the default certificates directory"}, {"no-CAstore", OPT_NOCASTORE, '-', "Do not load certificates from the default certificates store"}, {"requestCAfile", OPT_REQCAFILE, '<', "PEM format file of CA names to send to the server"}, #if defined(TCP_FASTOPEN) && !defined(OPENSSL_NO_TFO) {"tfo", OPT_TFO, '-', "Connect using TCP Fast Open"}, #endif {"dane_tlsa_domain", OPT_DANE_TLSA_DOMAIN, 's', "DANE TLSA base domain"}, {"dane_tlsa_rrdata", OPT_DANE_TLSA_RRDATA, 's', "DANE TLSA rrdata presentation form"}, {"dane_ee_no_namechecks", OPT_DANE_EE_NO_NAME, '-', "Disable name checks when matching DANE-EE(3) TLSA records"}, {"psk_identity", OPT_PSK_IDENTITY, 's', "PSK identity"}, {"psk", OPT_PSK, 's', "PSK in hex (without 0x)"}, {"psk_session", OPT_PSK_SESS, '<', "File to read PSK SSL session from"}, {"name", OPT_PROTOHOST, 's', "Hostname to use for \"-starttls lmtp\", \"-starttls smtp\" or \"-starttls xmpp[-server]\""}, OPT_SECTION("Session"), {"reconnect", OPT_RECONNECT, '-', "Drop and re-make the connection with the same Session-ID"}, {"sess_out", OPT_SESS_OUT, '>', "File to write SSL session to"}, {"sess_in", OPT_SESS_IN, '<', "File to read SSL session from"}, OPT_SECTION("Input/Output"), {"crlf", OPT_CRLF, '-', "Convert LF from terminal into CRLF"}, {"quiet", OPT_QUIET, '-', "No s_client output"}, {"ign_eof", OPT_IGN_EOF, '-', "Ignore input eof (default when -quiet)"}, {"no_ign_eof", OPT_NO_IGN_EOF, '-', "Don't ignore input eof"}, {"starttls", OPT_STARTTLS, 's', "Use the appropriate STARTTLS command before starting TLS"}, {"xmpphost", OPT_XMPPHOST, 's', "Alias of -name option for \"-starttls xmpp[-server]\""}, {"brief", OPT_BRIEF, '-', "Restrict output to brief summary of connection parameters"}, {"prexit", OPT_PREXIT, '-', "Print session information when the program exits"}, {"no-interactive", OPT_NO_INTERACTIVE, '-', "Don't run the client in the interactive mode"}, OPT_SECTION("Debug"), {"showcerts", OPT_SHOWCERTS, '-', "Show all certificates sent by the server"}, {"debug", OPT_DEBUG, '-', "Extra output"}, {"msg", OPT_MSG, '-', "Show protocol messages"}, {"msgfile", OPT_MSGFILE, '>', "File to send output of -msg or -trace, instead of stdout"}, {"nbio_test", OPT_NBIO_TEST, '-', "More ssl protocol testing"}, {"state", OPT_STATE, '-', "Print the ssl states"}, {"keymatexport", OPT_KEYMATEXPORT, 's', "Export keying material using label"}, {"keymatexportlen", OPT_KEYMATEXPORTLEN, 'p', "Export len bytes of keying material; default 20"}, {"security_debug", OPT_SECURITY_DEBUG, '-', "Enable security debug messages"}, {"security_debug_verbose", OPT_SECURITY_DEBUG_VERBOSE, '-', "Output more security debug output"}, #ifndef OPENSSL_NO_SSL_TRACE {"trace", OPT_TRACE, '-', "Show trace output of protocol messages"}, #endif #ifdef WATT32 {"wdebug", OPT_WDEBUG, '-', "WATT-32 tcp debugging"}, #endif {"keylogfile", OPT_KEYLOG_FILE, '>', "Write TLS secrets to file"}, {"nocommands", OPT_NOCMDS, '-', "Do not use interactive command letters"}, {"adv", OPT_ADV, '-', "Advanced command mode"}, {"servername", OPT_SERVERNAME, 's', "Set TLS extension servername (SNI) in ClientHello (default)"}, {"noservername", OPT_NOSERVERNAME, '-', "Do not send the server name (SNI) extension in the ClientHello"}, {"tlsextdebug", OPT_TLSEXTDEBUG, '-', "Hex dump of all TLS extensions received"}, {"ignore_unexpected_eof", OPT_IGNORE_UNEXPECTED_EOF, '-', "Do not treat lack of close_notify from a peer as an error"}, #ifndef OPENSSL_NO_OCSP {"status", OPT_STATUS, '-', "Request certificate status from server"}, #endif {"serverinfo", OPT_SERVERINFO, 's', "types Send empty ClientHello extensions (comma-separated numbers)"}, {"alpn", OPT_ALPN, 's', "Enable ALPN extension, considering named protocols supported (comma-separated list)"}, {"async", OPT_ASYNC, '-', "Support asynchronous operation"}, {"nbio", OPT_NBIO, '-', "Use non-blocking IO"}, OPT_SECTION("Protocol and version"), #ifndef OPENSSL_NO_SSL3 {"ssl3", OPT_SSL3, '-', "Just use SSLv3"}, #endif #ifndef OPENSSL_NO_TLS1 {"tls1", OPT_TLS1, '-', "Just use TLSv1"}, #endif #ifndef OPENSSL_NO_TLS1_1 {"tls1_1", OPT_TLS1_1, '-', "Just use TLSv1.1"}, #endif #ifndef OPENSSL_NO_TLS1_2 {"tls1_2", OPT_TLS1_2, '-', "Just use TLSv1.2"}, #endif #ifndef OPENSSL_NO_TLS1_3 {"tls1_3", OPT_TLS1_3, '-', "Just use TLSv1.3"}, #endif #ifndef OPENSSL_NO_DTLS {"dtls", OPT_DTLS, '-', "Use any version of DTLS"}, {"quic", OPT_QUIC, '-', "Use QUIC"}, {"timeout", OPT_TIMEOUT, '-', "Enable send/receive timeout on DTLS connections"}, {"mtu", OPT_MTU, 'p', "Set the link layer MTU"}, #endif #ifndef OPENSSL_NO_DTLS1 {"dtls1", OPT_DTLS1, '-', "Just use DTLSv1"}, #endif #ifndef OPENSSL_NO_DTLS1_2 {"dtls1_2", OPT_DTLS1_2, '-', "Just use DTLSv1.2"}, #endif #ifndef OPENSSL_NO_SCTP {"sctp", OPT_SCTP, '-', "Use SCTP"}, {"sctp_label_bug", OPT_SCTP_LABEL_BUG, '-', "Enable SCTP label length bug"}, #endif #ifndef OPENSSL_NO_NEXTPROTONEG {"nextprotoneg", OPT_NEXTPROTONEG, 's', "Enable NPN extension, considering named protocols supported (comma-separated list)"}, #endif {"early_data", OPT_EARLY_DATA, '<', "File to send as early data"}, {"enable_pha", OPT_ENABLE_PHA, '-', "Enable post-handshake-authentication"}, {"enable_server_rpk", OPT_ENABLE_SERVER_RPK, '-', "Enable raw public keys (RFC7250) from the server"}, {"enable_client_rpk", OPT_ENABLE_CLIENT_RPK, '-', "Enable raw public keys (RFC7250) from the client"}, #ifndef OPENSSL_NO_SRTP {"use_srtp", OPT_USE_SRTP, 's', "Offer SRTP key management with a colon-separated profile list"}, #endif #ifndef OPENSSL_NO_SRP {"srpuser", OPT_SRPUSER, 's', "(deprecated) SRP authentication for 'user'"}, {"srppass", OPT_SRPPASS, 's', "(deprecated) Password for 'user'"}, {"srp_lateuser", OPT_SRP_LATEUSER, '-', "(deprecated) SRP username into second ClientHello message"}, {"srp_moregroups", OPT_SRP_MOREGROUPS, '-', "(deprecated) Tolerate other than the known g N values."}, {"srp_strength", OPT_SRP_STRENGTH, 'p', "(deprecated) Minimal length in bits for N"}, #endif #ifndef OPENSSL_NO_KTLS {"ktls", OPT_KTLS, '-', "Enable Kernel TLS for sending and receiving"}, #endif OPT_R_OPTIONS, OPT_S_OPTIONS, OPT_V_OPTIONS, {"CRL", OPT_CRL, '<', "CRL file to use"}, {"crl_download", OPT_CRL_DOWNLOAD, '-', "Download CRL from distribution points"}, {"CRLform", OPT_CRLFORM, 'F', "CRL format (PEM or DER); default PEM"}, {"verify_return_error", OPT_VERIFY_RET_ERROR, '-', "Close connection on verification error"}, {"verify_quiet", OPT_VERIFY_QUIET, '-', "Restrict verify output to errors"}, {"chainCAfile", OPT_CHAINCAFILE, '<', "CA file for certificate chain (PEM format)"}, {"chainCApath", OPT_CHAINCAPATH, '/', "Use dir as certificate store path to build CA certificate chain"}, {"chainCAstore", OPT_CHAINCASTORE, ':', "CA store URI for certificate chain"}, {"verifyCAfile", OPT_VERIFYCAFILE, '<', "CA file for certificate verification (PEM format)"}, {"verifyCApath", OPT_VERIFYCAPATH, '/', "Use dir as certificate store path to verify CA certificate"}, {"verifyCAstore", OPT_VERIFYCASTORE, ':', "CA store URI for certificate verification"}, OPT_X_OPTIONS, OPT_PROV_OPTIONS, OPT_PARAMETERS(), {"host:port", 0, 0, "Where to connect; same as -connect option"}, {NULL} }; typedef enum PROTOCOL_choice { PROTO_OFF, PROTO_SMTP, PROTO_POP3, PROTO_IMAP, PROTO_FTP, PROTO_TELNET, PROTO_XMPP, PROTO_XMPP_SERVER, PROTO_IRC, PROTO_MYSQL, PROTO_POSTGRES, PROTO_LMTP, PROTO_NNTP, PROTO_SIEVE, PROTO_LDAP } PROTOCOL_CHOICE; static const OPT_PAIR services[] = { {"smtp", PROTO_SMTP}, {"pop3", PROTO_POP3}, {"imap", PROTO_IMAP}, {"ftp", PROTO_FTP}, {"xmpp", PROTO_XMPP}, {"xmpp-server", PROTO_XMPP_SERVER}, {"telnet", PROTO_TELNET}, {"irc", PROTO_IRC}, {"mysql", PROTO_MYSQL}, {"postgres", PROTO_POSTGRES}, {"lmtp", PROTO_LMTP}, {"nntp", PROTO_NNTP}, {"sieve", PROTO_SIEVE}, {"ldap", PROTO_LDAP}, {NULL, 0} }; #define IS_INET_FLAG(o) \ (o == OPT_4 || o == OPT_6 || o == OPT_HOST || o == OPT_PORT || o == OPT_CONNECT) #define IS_UNIX_FLAG(o) (o == OPT_UNIX) #define IS_PROT_FLAG(o) \ (o == OPT_SSL3 || o == OPT_TLS1 || o == OPT_TLS1_1 || o == OPT_TLS1_2 \ || o == OPT_TLS1_3 || o == OPT_DTLS || o == OPT_DTLS1 || o == OPT_DTLS1_2 \ || o == OPT_QUIC) /* Free |*dest| and optionally set it to a copy of |source|. */ static void freeandcopy(char **dest, const char *source) { OPENSSL_free(*dest); *dest = NULL; if (source != NULL) *dest = OPENSSL_strdup(source); } static int new_session_cb(SSL *s, SSL_SESSION *sess) { if (sess_out != NULL) { BIO *stmp = BIO_new_file(sess_out, "w"); if (stmp == NULL) { BIO_printf(bio_err, "Error writing session file %s\n", sess_out); } else { PEM_write_bio_SSL_SESSION(stmp, sess); BIO_free(stmp); } } /* * Session data gets dumped on connection for TLSv1.2 and below, and on * arrival of the NewSessionTicket for TLSv1.3. */ if (SSL_version(s) == TLS1_3_VERSION) { BIO_printf(bio_c_out, "---\nPost-Handshake New Session Ticket arrived:\n"); SSL_SESSION_print(bio_c_out, sess); BIO_printf(bio_c_out, "---\n"); } /* * We always return a "fail" response so that the session gets freed again * because we haven't used the reference. */ return 0; } int s_client_main(int argc, char **argv) { BIO *sbio; EVP_PKEY *key = NULL; SSL *con = NULL; SSL_CTX *ctx = NULL; STACK_OF(X509) *chain = NULL; X509 *cert = NULL; X509_VERIFY_PARAM *vpm = NULL; SSL_EXCERT *exc = NULL; SSL_CONF_CTX *cctx = NULL; STACK_OF(OPENSSL_STRING) *ssl_args = NULL; char *dane_tlsa_domain = NULL; STACK_OF(OPENSSL_STRING) *dane_tlsa_rrset = NULL; int dane_ee_no_name = 0; STACK_OF(X509_CRL) *crls = NULL; const SSL_METHOD *meth = TLS_client_method(); const char *CApath = NULL, *CAfile = NULL, *CAstore = NULL; char *cbuf = NULL, *sbuf = NULL, *mbuf = NULL; char *proxystr = NULL, *proxyuser = NULL; char *proxypassarg = NULL, *proxypass = NULL; char *connectstr = NULL, *bindstr = NULL; char *cert_file = NULL, *key_file = NULL, *chain_file = NULL; char *chCApath = NULL, *chCAfile = NULL, *chCAstore = NULL, *host = NULL; char *thost = NULL, *tport = NULL; char *port = NULL; char *bindhost = NULL, *bindport = NULL; char *passarg = NULL, *pass = NULL; char *vfyCApath = NULL, *vfyCAfile = NULL, *vfyCAstore = NULL; char *ReqCAfile = NULL; char *sess_in = NULL, *crl_file = NULL, *p; const char *protohost = NULL; struct timeval timeout, *timeoutp; fd_set readfds, writefds; int noCApath = 0, noCAfile = 0, noCAstore = 0; int build_chain = 0, cert_format = FORMAT_UNDEF; size_t cbuf_len, cbuf_off; int key_format = FORMAT_UNDEF, crlf = 0, full_log = 1, mbuf_len = 0; int prexit = 0; int nointeractive = 0; int sdebug = 0; int reconnect = 0, verify = SSL_VERIFY_NONE, vpmtouched = 0; int ret = 1, in_init = 1, i, nbio_test = 0, sock = -1, k, width, state = 0; int sbuf_len, sbuf_off, cmdmode = USER_DATA_MODE_BASIC; int socket_family = AF_UNSPEC, socket_type = SOCK_STREAM, protocol = 0; int starttls_proto = PROTO_OFF, crl_format = FORMAT_UNDEF, crl_download = 0; int write_tty, read_tty, write_ssl, read_ssl, tty_on, ssl_pending; int first_loop; #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) int at_eof = 0; #endif int read_buf_len = 0; int fallback_scsv = 0; OPTION_CHOICE o; #ifndef OPENSSL_NO_DTLS int enable_timeouts = 0; long socket_mtu = 0; #endif #ifndef OPENSSL_NO_ENGINE ENGINE *ssl_client_engine = NULL; #endif ENGINE *e = NULL; #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) struct timeval tv; #endif const char *servername = NULL; char *sname_alloc = NULL; int noservername = 0; const char *alpn_in = NULL; tlsextctx tlsextcbp = { NULL, 0 }; const char *ssl_config = NULL; #define MAX_SI_TYPES 100 unsigned short serverinfo_types[MAX_SI_TYPES]; int serverinfo_count = 0, start = 0, len; #ifndef OPENSSL_NO_NEXTPROTONEG const char *next_proto_neg_in = NULL; #endif #ifndef OPENSSL_NO_SRP char *srppass = NULL; int srp_lateuser = 0; SRP_ARG srp_arg = { NULL, NULL, 0, 0, 0, 1024 }; #endif #ifndef OPENSSL_NO_SRTP char *srtp_profiles = NULL; #endif #ifndef OPENSSL_NO_CT char *ctlog_file = NULL; int ct_validation = 0; #endif int min_version = 0, max_version = 0, prot_opt = 0, no_prot_opt = 0; int async = 0; unsigned int max_send_fragment = 0; unsigned int split_send_fragment = 0, max_pipelines = 0; enum { use_inet, use_unix, use_unknown } connect_type = use_unknown; int count4or6 = 0; uint8_t maxfraglen = 0; int c_nbio = 0, c_msg = 0, c_ign_eof = 0, c_brief = 0; int c_tlsextdebug = 0; #ifndef OPENSSL_NO_OCSP int c_status_req = 0; #endif BIO *bio_c_msg = NULL; const char *keylog_file = NULL, *early_data_file = NULL; int isdtls = 0, isquic = 0; char *psksessf = NULL; int enable_pha = 0; int enable_client_rpk = 0; #ifndef OPENSSL_NO_SCTP int sctp_label_bug = 0; #endif int ignore_unexpected_eof = 0; #ifndef OPENSSL_NO_KTLS int enable_ktls = 0; #endif int tfo = 0; int is_infinite; BIO_ADDR *peer_addr = NULL; struct user_data_st user_data; FD_ZERO(&readfds); FD_ZERO(&writefds); /* Known false-positive of MemorySanitizer. */ #if defined(__has_feature) # if __has_feature(memory_sanitizer) __msan_unpoison(&readfds, sizeof(readfds)); __msan_unpoison(&writefds, sizeof(writefds)); # endif #endif c_quiet = 0; c_debug = 0; c_showcerts = 0; c_nbio = 0; port = OPENSSL_strdup(PORT); vpm = X509_VERIFY_PARAM_new(); cctx = SSL_CONF_CTX_new(); if (port == NULL || vpm == NULL || cctx == NULL) { BIO_printf(bio_err, "%s: out of memory\n", opt_getprog()); goto end; } cbuf = app_malloc(BUFSIZZ, "cbuf"); sbuf = app_malloc(BUFSIZZ, "sbuf"); mbuf = app_malloc(BUFSIZZ, "mbuf"); SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_CLIENT | SSL_CONF_FLAG_CMDLINE); prog = opt_init(argc, argv, s_client_options); while ((o = opt_next()) != OPT_EOF) { /* Check for intermixing flags. */ if (connect_type == use_unix && IS_INET_FLAG(o)) { BIO_printf(bio_err, "%s: Intermixed protocol flags (unix and internet domains)\n", prog); goto end; } if (connect_type == use_inet && IS_UNIX_FLAG(o)) { BIO_printf(bio_err, "%s: Intermixed protocol flags (internet and unix domains)\n", prog); goto end; } if (IS_PROT_FLAG(o) && ++prot_opt > 1) { BIO_printf(bio_err, "Cannot supply multiple protocol flags\n"); goto end; } if (IS_NO_PROT_FLAG(o)) no_prot_opt++; if (prot_opt == 1 && no_prot_opt) { BIO_printf(bio_err, "Cannot supply both a protocol flag and '-no_'\n"); goto end; } switch (o) { case OPT_EOF: case OPT_ERR: opthelp: BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); goto end; case OPT_HELP: opt_help(s_client_options); ret = 0; goto end; case OPT_4: connect_type = use_inet; socket_family = AF_INET; count4or6++; break; #ifdef AF_INET6 case OPT_6: connect_type = use_inet; socket_family = AF_INET6; count4or6++; break; #endif case OPT_HOST: connect_type = use_inet; freeandcopy(&host, opt_arg()); break; case OPT_PORT: connect_type = use_inet; freeandcopy(&port, opt_arg()); break; case OPT_CONNECT: connect_type = use_inet; freeandcopy(&connectstr, opt_arg()); break; case OPT_BIND: freeandcopy(&bindstr, opt_arg()); break; case OPT_PROXY: proxystr = opt_arg(); break; case OPT_PROXY_USER: proxyuser = opt_arg(); break; case OPT_PROXY_PASS: proxypassarg = opt_arg(); break; #ifdef AF_UNIX case OPT_UNIX: connect_type = use_unix; socket_family = AF_UNIX; freeandcopy(&host, opt_arg()); break; #endif case OPT_XMPPHOST: /* fall through, since this is an alias */ case OPT_PROTOHOST: protohost = opt_arg(); break; case OPT_VERIFY: verify = SSL_VERIFY_PEER; verify_args.depth = atoi(opt_arg()); if (!c_quiet) BIO_printf(bio_err, "verify depth is %d\n", verify_args.depth); break; case OPT_CERT: cert_file = opt_arg(); break; case OPT_NAMEOPT: if (!set_nameopt(opt_arg())) goto end; break; case OPT_CRL: crl_file = opt_arg(); break; case OPT_CRL_DOWNLOAD: crl_download = 1; break; case OPT_SESS_OUT: sess_out = opt_arg(); break; case OPT_SESS_IN: sess_in = opt_arg(); break; case OPT_CERTFORM: if (!opt_format(opt_arg(), OPT_FMT_ANY, &cert_format)) goto opthelp; break; case OPT_CRLFORM: if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &crl_format)) goto opthelp; break; case OPT_VERIFY_RET_ERROR: verify = SSL_VERIFY_PEER; verify_args.return_error = 1; break; case OPT_VERIFY_QUIET: verify_args.quiet = 1; break; case OPT_BRIEF: c_brief = verify_args.quiet = c_quiet = 1; break; case OPT_S_CASES: if (ssl_args == NULL) ssl_args = sk_OPENSSL_STRING_new_null(); if (ssl_args == NULL || !sk_OPENSSL_STRING_push(ssl_args, opt_flag()) || !sk_OPENSSL_STRING_push(ssl_args, opt_arg())) { BIO_printf(bio_err, "%s: Memory allocation failure\n", prog); goto end; } break; case OPT_V_CASES: if (!opt_verify(o, vpm)) goto end; vpmtouched++; break; case OPT_X_CASES: if (!args_excert(o, &exc)) goto end; break; case OPT_IGNORE_UNEXPECTED_EOF: ignore_unexpected_eof = 1; break; case OPT_PREXIT: prexit = 1; break; case OPT_NO_INTERACTIVE: nointeractive = 1; break; case OPT_CRLF: crlf = 1; break; case OPT_QUIET: c_quiet = c_ign_eof = 1; break; case OPT_NBIO: c_nbio = 1; break; case OPT_NOCMDS: cmdmode = USER_DATA_MODE_NONE; break; case OPT_ADV: cmdmode = USER_DATA_MODE_ADVANCED; break; case OPT_ENGINE: e = setup_engine(opt_arg(), 1); break; case OPT_SSL_CLIENT_ENGINE: #ifndef OPENSSL_NO_ENGINE ssl_client_engine = setup_engine(opt_arg(), 0); if (ssl_client_engine == NULL) { BIO_printf(bio_err, "Error getting client auth engine\n"); goto opthelp; } #endif break; case OPT_R_CASES: if (!opt_rand(o)) goto end; break; case OPT_PROV_CASES: if (!opt_provider(o)) goto end; break; case OPT_IGN_EOF: c_ign_eof = 1; break; case OPT_NO_IGN_EOF: c_ign_eof = 0; break; case OPT_DEBUG: c_debug = 1; break; case OPT_TLSEXTDEBUG: c_tlsextdebug = 1; break; case OPT_STATUS: #ifndef OPENSSL_NO_OCSP c_status_req = 1; #endif break; case OPT_WDEBUG: #ifdef WATT32 dbug_init(); #endif break; case OPT_MSG: c_msg = 1; break; case OPT_MSGFILE: bio_c_msg = BIO_new_file(opt_arg(), "w"); if (bio_c_msg == NULL) { BIO_printf(bio_err, "Error writing file %s\n", opt_arg()); goto end; } break; case OPT_TRACE: #ifndef OPENSSL_NO_SSL_TRACE c_msg = 2; #endif break; case OPT_SECURITY_DEBUG: sdebug = 1; break; case OPT_SECURITY_DEBUG_VERBOSE: sdebug = 2; break; case OPT_SHOWCERTS: c_showcerts = 1; break; case OPT_NBIO_TEST: nbio_test = 1; break; case OPT_STATE: state = 1; break; case OPT_PSK_IDENTITY: psk_identity = opt_arg(); break; case OPT_PSK: for (p = psk_key = opt_arg(); *p; p++) { if (isxdigit(_UC(*p))) continue; BIO_printf(bio_err, "Not a hex number '%s'\n", psk_key); goto end; } break; case OPT_PSK_SESS: psksessf = opt_arg(); break; #ifndef OPENSSL_NO_SRP case OPT_SRPUSER: srp_arg.srplogin = opt_arg(); if (min_version < TLS1_VERSION) min_version = TLS1_VERSION; break; case OPT_SRPPASS: srppass = opt_arg(); if (min_version < TLS1_VERSION) min_version = TLS1_VERSION; break; case OPT_SRP_STRENGTH: srp_arg.strength = atoi(opt_arg()); BIO_printf(bio_err, "SRP minimal length for N is %d\n", srp_arg.strength); if (min_version < TLS1_VERSION) min_version = TLS1_VERSION; break; case OPT_SRP_LATEUSER: srp_lateuser = 1; if (min_version < TLS1_VERSION) min_version = TLS1_VERSION; break; case OPT_SRP_MOREGROUPS: srp_arg.amp = 1; if (min_version < TLS1_VERSION) min_version = TLS1_VERSION; break; #endif case OPT_SSL_CONFIG: ssl_config = opt_arg(); break; case OPT_SSL3: min_version = SSL3_VERSION; max_version = SSL3_VERSION; socket_type = SOCK_STREAM; #ifndef OPENSSL_NO_DTLS isdtls = 0; #endif isquic = 0; break; case OPT_TLS1_3: min_version = TLS1_3_VERSION; max_version = TLS1_3_VERSION; socket_type = SOCK_STREAM; #ifndef OPENSSL_NO_DTLS isdtls = 0; #endif isquic = 0; break; case OPT_TLS1_2: min_version = TLS1_2_VERSION; max_version = TLS1_2_VERSION; socket_type = SOCK_STREAM; #ifndef OPENSSL_NO_DTLS isdtls = 0; #endif isquic = 0; break; case OPT_TLS1_1: min_version = TLS1_1_VERSION; max_version = TLS1_1_VERSION; socket_type = SOCK_STREAM; #ifndef OPENSSL_NO_DTLS isdtls = 0; #endif isquic = 0; break; case OPT_TLS1: min_version = TLS1_VERSION; max_version = TLS1_VERSION; socket_type = SOCK_STREAM; #ifndef OPENSSL_NO_DTLS isdtls = 0; #endif isquic = 0; break; case OPT_DTLS: #ifndef OPENSSL_NO_DTLS meth = DTLS_client_method(); socket_type = SOCK_DGRAM; isdtls = 1; isquic = 0; #endif break; case OPT_DTLS1: #ifndef OPENSSL_NO_DTLS1 meth = DTLS_client_method(); min_version = DTLS1_VERSION; max_version = DTLS1_VERSION; socket_type = SOCK_DGRAM; isdtls = 1; isquic = 0; #endif break; case OPT_DTLS1_2: #ifndef OPENSSL_NO_DTLS1_2 meth = DTLS_client_method(); min_version = DTLS1_2_VERSION; max_version = DTLS1_2_VERSION; socket_type = SOCK_DGRAM; isdtls = 1; isquic = 0; #endif break; case OPT_QUIC: #ifndef OPENSSL_NO_QUIC meth = OSSL_QUIC_client_method(); min_version = 0; max_version = 0; socket_type = SOCK_DGRAM; # ifndef OPENSSL_NO_DTLS isdtls = 0; # endif isquic = 1; #endif break; case OPT_SCTP: #ifndef OPENSSL_NO_SCTP protocol = IPPROTO_SCTP; #endif break; case OPT_SCTP_LABEL_BUG: #ifndef OPENSSL_NO_SCTP sctp_label_bug = 1; #endif break; case OPT_TIMEOUT: #ifndef OPENSSL_NO_DTLS enable_timeouts = 1; #endif break; case OPT_MTU: #ifndef OPENSSL_NO_DTLS socket_mtu = atol(opt_arg()); #endif break; case OPT_FALLBACKSCSV: fallback_scsv = 1; break; case OPT_KEYFORM: if (!opt_format(opt_arg(), OPT_FMT_ANY, &key_format)) goto opthelp; break; case OPT_PASS: passarg = opt_arg(); break; case OPT_CERT_CHAIN: chain_file = opt_arg(); break; case OPT_KEY: key_file = opt_arg(); break; case OPT_RECONNECT: reconnect = 5; break; case OPT_CAPATH: CApath = opt_arg(); break; case OPT_NOCAPATH: noCApath = 1; break; case OPT_CHAINCAPATH: chCApath = opt_arg(); break; case OPT_VERIFYCAPATH: vfyCApath = opt_arg(); break; case OPT_BUILD_CHAIN: build_chain = 1; break; case OPT_REQCAFILE: ReqCAfile = opt_arg(); break; case OPT_CAFILE: CAfile = opt_arg(); break; case OPT_NOCAFILE: noCAfile = 1; break; #ifndef OPENSSL_NO_CT case OPT_NOCT: ct_validation = 0; break; case OPT_CT: ct_validation = 1; break; case OPT_CTLOG_FILE: ctlog_file = opt_arg(); break; #endif case OPT_CHAINCAFILE: chCAfile = opt_arg(); break; case OPT_VERIFYCAFILE: vfyCAfile = opt_arg(); break; case OPT_CASTORE: CAstore = opt_arg(); break; case OPT_NOCASTORE: noCAstore = 1; break; case OPT_CHAINCASTORE: chCAstore = opt_arg(); break; case OPT_VERIFYCASTORE: vfyCAstore = opt_arg(); break; case OPT_DANE_TLSA_DOMAIN: dane_tlsa_domain = opt_arg(); break; case OPT_DANE_TLSA_RRDATA: if (dane_tlsa_rrset == NULL) dane_tlsa_rrset = sk_OPENSSL_STRING_new_null(); if (dane_tlsa_rrset == NULL || !sk_OPENSSL_STRING_push(dane_tlsa_rrset, opt_arg())) { BIO_printf(bio_err, "%s: Memory allocation failure\n", prog); goto end; } break; case OPT_DANE_EE_NO_NAME: dane_ee_no_name = 1; break; case OPT_NEXTPROTONEG: #ifndef OPENSSL_NO_NEXTPROTONEG next_proto_neg_in = opt_arg(); #endif break; case OPT_ALPN: alpn_in = opt_arg(); break; case OPT_SERVERINFO: p = opt_arg(); len = strlen(p); for (start = 0, i = 0; i <= len; ++i) { if (i == len || p[i] == ',') { serverinfo_types[serverinfo_count] = atoi(p + start); if (++serverinfo_count == MAX_SI_TYPES) break; start = i + 1; } } break; case OPT_STARTTLS: if (!opt_pair(opt_arg(), services, &starttls_proto)) goto end; break; case OPT_TFO: tfo = 1; break; case OPT_SERVERNAME: servername = opt_arg(); break; case OPT_NOSERVERNAME: noservername = 1; break; case OPT_USE_SRTP: #ifndef OPENSSL_NO_SRTP srtp_profiles = opt_arg(); #endif break; case OPT_KEYMATEXPORT: keymatexportlabel = opt_arg(); break; case OPT_KEYMATEXPORTLEN: keymatexportlen = atoi(opt_arg()); break; case OPT_ASYNC: async = 1; break; case OPT_MAXFRAGLEN: len = atoi(opt_arg()); switch (len) { case 512: maxfraglen = TLSEXT_max_fragment_length_512; break; case 1024: maxfraglen = TLSEXT_max_fragment_length_1024; break; case 2048: maxfraglen = TLSEXT_max_fragment_length_2048; break; case 4096: maxfraglen = TLSEXT_max_fragment_length_4096; break; default: BIO_printf(bio_err, "%s: Max Fragment Len %u is out of permitted values", prog, len); goto opthelp; } break; case OPT_MAX_SEND_FRAG: max_send_fragment = atoi(opt_arg()); break; case OPT_SPLIT_SEND_FRAG: split_send_fragment = atoi(opt_arg()); break; case OPT_MAX_PIPELINES: max_pipelines = atoi(opt_arg()); break; case OPT_READ_BUF: read_buf_len = atoi(opt_arg()); break; case OPT_KEYLOG_FILE: keylog_file = opt_arg(); break; case OPT_EARLY_DATA: early_data_file = opt_arg(); break; case OPT_ENABLE_PHA: enable_pha = 1; break; case OPT_KTLS: #ifndef OPENSSL_NO_KTLS enable_ktls = 1; #endif break; case OPT_ENABLE_SERVER_RPK: enable_server_rpk = 1; break; case OPT_ENABLE_CLIENT_RPK: enable_client_rpk = 1; break; } } /* Optional argument is connect string if -connect not used. */ if (opt_num_rest() == 1) { /* Don't allow -connect and a separate argument. */ if (connectstr != NULL) { BIO_printf(bio_err, "%s: cannot provide both -connect option and target parameter\n", prog); goto opthelp; } connect_type = use_inet; freeandcopy(&connectstr, *opt_rest()); } else if (!opt_check_rest_arg(NULL)) { goto opthelp; } if (!app_RAND_load()) goto end; if (c_ign_eof) cmdmode = USER_DATA_MODE_NONE; if (count4or6 >= 2) { BIO_printf(bio_err, "%s: Can't use both -4 and -6\n", prog); goto opthelp; } if (noservername) { if (servername != NULL) { BIO_printf(bio_err, "%s: Can't use -servername and -noservername together\n", prog); goto opthelp; } if (dane_tlsa_domain != NULL) { BIO_printf(bio_err, "%s: Can't use -dane_tlsa_domain and -noservername together\n", prog); goto opthelp; } } #ifndef OPENSSL_NO_NEXTPROTONEG if (min_version == TLS1_3_VERSION && next_proto_neg_in != NULL) { BIO_printf(bio_err, "Cannot supply -nextprotoneg with TLSv1.3\n"); goto opthelp; } #endif if (connectstr != NULL) { int res; char *tmp_host = host, *tmp_port = port; res = BIO_parse_hostserv(connectstr, &host, &port, BIO_PARSE_PRIO_HOST); if (tmp_host != host) OPENSSL_free(tmp_host); if (tmp_port != port) OPENSSL_free(tmp_port); if (!res) { BIO_printf(bio_err, "%s: -connect argument or target parameter malformed or ambiguous\n", prog); goto end; } } if (proxystr != NULL) { #ifndef OPENSSL_NO_HTTP int res; char *tmp_host = host, *tmp_port = port; if (host == NULL || port == NULL) { BIO_printf(bio_err, "%s: -proxy requires use of -connect or target parameter\n", prog); goto opthelp; } if (servername == NULL && !noservername) { servername = sname_alloc = OPENSSL_strdup(host); if (sname_alloc == NULL) { BIO_printf(bio_err, "%s: out of memory\n", prog); goto end; } } /* Retain the original target host:port for use in the HTTP proxy connect string */ thost = OPENSSL_strdup(host); tport = OPENSSL_strdup(port); if (thost == NULL || tport == NULL) { BIO_printf(bio_err, "%s: out of memory\n", prog); goto end; } res = BIO_parse_hostserv(proxystr, &host, &port, BIO_PARSE_PRIO_HOST); if (tmp_host != host) OPENSSL_free(tmp_host); if (tmp_port != port) OPENSSL_free(tmp_port); if (!res) { BIO_printf(bio_err, "%s: -proxy argument malformed or ambiguous\n", prog); goto end; } #else BIO_printf(bio_err, "%s: -proxy not supported in no-http build\n", prog); goto end; #endif } if (bindstr != NULL) { int res; res = BIO_parse_hostserv(bindstr, &bindhost, &bindport, BIO_PARSE_PRIO_HOST); if (!res) { BIO_printf(bio_err, "%s: -bind argument parameter malformed or ambiguous\n", prog); goto end; } } #ifdef AF_UNIX if (socket_family == AF_UNIX && socket_type != SOCK_STREAM) { BIO_printf(bio_err, "Can't use unix sockets and datagrams together\n"); goto end; } #endif #ifndef OPENSSL_NO_SCTP if (protocol == IPPROTO_SCTP) { if (socket_type != SOCK_DGRAM) { BIO_printf(bio_err, "Can't use -sctp without DTLS\n"); goto end; } /* SCTP is unusual. It uses DTLS over a SOCK_STREAM protocol */ socket_type = SOCK_STREAM; } #endif #if !defined(OPENSSL_NO_NEXTPROTONEG) next_proto.status = -1; if (next_proto_neg_in) { next_proto.data = next_protos_parse(&next_proto.len, next_proto_neg_in); if (next_proto.data == NULL) { BIO_printf(bio_err, "Error parsing -nextprotoneg argument\n"); goto end; } } else next_proto.data = NULL; #endif if (!app_passwd(passarg, NULL, &pass, NULL)) { BIO_printf(bio_err, "Error getting private key password\n"); goto end; } if (!app_passwd(proxypassarg, NULL, &proxypass, NULL)) { BIO_printf(bio_err, "Error getting proxy password\n"); goto end; } if (proxypass != NULL && proxyuser == NULL) { BIO_printf(bio_err, "Error: Must specify proxy_user with proxy_pass\n"); goto end; } if (key_file == NULL) key_file = cert_file; if (key_file != NULL) { key = load_key(key_file, key_format, 0, pass, e, "client certificate private key"); if (key == NULL) goto end; } if (cert_file != NULL) { cert = load_cert_pass(cert_file, cert_format, 1, pass, "client certificate"); if (cert == NULL) goto end; } if (chain_file != NULL) { if (!load_certs(chain_file, 0, &chain, pass, "client certificate chain")) goto end; } if (crl_file != NULL) { X509_CRL *crl; crl = load_crl(crl_file, crl_format, 0, "CRL"); if (crl == NULL) goto end; crls = sk_X509_CRL_new_null(); if (crls == NULL || !sk_X509_CRL_push(crls, crl)) { BIO_puts(bio_err, "Error adding CRL\n"); ERR_print_errors(bio_err); X509_CRL_free(crl); goto end; } } if (!load_excert(&exc)) goto end; if (bio_c_out == NULL) { if (c_quiet && !c_debug) { bio_c_out = BIO_new(BIO_s_null()); if (c_msg && bio_c_msg == NULL) { bio_c_msg = dup_bio_out(FORMAT_TEXT); if (bio_c_msg == NULL) { BIO_printf(bio_err, "Out of memory\n"); goto end; } } } else { bio_c_out = dup_bio_out(FORMAT_TEXT); } if (bio_c_out == NULL) { BIO_printf(bio_err, "Unable to create BIO\n"); goto end; } } #ifndef OPENSSL_NO_SRP if (!app_passwd(srppass, NULL, &srp_arg.srppassin, NULL)) { BIO_printf(bio_err, "Error getting password\n"); goto end; } #endif ctx = SSL_CTX_new_ex(app_get0_libctx(), app_get0_propq(), meth); if (ctx == NULL) { ERR_print_errors(bio_err); goto end; } SSL_CTX_clear_mode(ctx, SSL_MODE_AUTO_RETRY); if (sdebug) ssl_ctx_security_debug(ctx, sdebug); if (!config_ctx(cctx, ssl_args, ctx)) goto end; if (ssl_config != NULL) { if (SSL_CTX_config(ctx, ssl_config) == 0) { BIO_printf(bio_err, "Error using configuration \"%s\"\n", ssl_config); ERR_print_errors(bio_err); goto end; } } #ifndef OPENSSL_NO_SCTP if (protocol == IPPROTO_SCTP && sctp_label_bug == 1) SSL_CTX_set_mode(ctx, SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG); #endif if (min_version != 0 && SSL_CTX_set_min_proto_version(ctx, min_version) == 0) goto end; if (max_version != 0 && SSL_CTX_set_max_proto_version(ctx, max_version) == 0) goto end; if (ignore_unexpected_eof) SSL_CTX_set_options(ctx, SSL_OP_IGNORE_UNEXPECTED_EOF); #ifndef OPENSSL_NO_KTLS if (enable_ktls) SSL_CTX_set_options(ctx, SSL_OP_ENABLE_KTLS); #endif if (vpmtouched && !SSL_CTX_set1_param(ctx, vpm)) { BIO_printf(bio_err, "Error setting verify params\n"); ERR_print_errors(bio_err); goto end; } if (async) { SSL_CTX_set_mode(ctx, SSL_MODE_ASYNC); } if (max_send_fragment > 0 && !SSL_CTX_set_max_send_fragment(ctx, max_send_fragment)) { BIO_printf(bio_err, "%s: Max send fragment size %u is out of permitted range\n", prog, max_send_fragment); goto end; } if (split_send_fragment > 0 && !SSL_CTX_set_split_send_fragment(ctx, split_send_fragment)) { BIO_printf(bio_err, "%s: Split send fragment size %u is out of permitted range\n", prog, split_send_fragment); goto end; } if (max_pipelines > 0 && !SSL_CTX_set_max_pipelines(ctx, max_pipelines)) { BIO_printf(bio_err, "%s: Max pipelines %u is out of permitted range\n", prog, max_pipelines); goto end; } if (read_buf_len > 0) { SSL_CTX_set_default_read_buffer_len(ctx, read_buf_len); } if (maxfraglen > 0 && !SSL_CTX_set_tlsext_max_fragment_length(ctx, maxfraglen)) { BIO_printf(bio_err, "%s: Max Fragment Length code %u is out of permitted values" "\n", prog, maxfraglen); goto end; } if (!ssl_load_stores(ctx, vfyCApath, vfyCAfile, vfyCAstore, chCApath, chCAfile, chCAstore, crls, crl_download)) { BIO_printf(bio_err, "Error loading store locations\n"); ERR_print_errors(bio_err); goto end; } if (ReqCAfile != NULL) { STACK_OF(X509_NAME) *nm = sk_X509_NAME_new_null(); if (nm == NULL || !SSL_add_file_cert_subjects_to_stack(nm, ReqCAfile)) { sk_X509_NAME_pop_free(nm, X509_NAME_free); BIO_printf(bio_err, "Error loading CA names\n"); ERR_print_errors(bio_err); goto end; } SSL_CTX_set0_CA_list(ctx, nm); } #ifndef OPENSSL_NO_ENGINE if (ssl_client_engine) { if (!SSL_CTX_set_client_cert_engine(ctx, ssl_client_engine)) { BIO_puts(bio_err, "Error setting client auth engine\n"); ERR_print_errors(bio_err); release_engine(ssl_client_engine); goto end; } release_engine(ssl_client_engine); } #endif #ifndef OPENSSL_NO_PSK if (psk_key != NULL) { if (c_debug) BIO_printf(bio_c_out, "PSK key given, setting client callback\n"); SSL_CTX_set_psk_client_callback(ctx, psk_client_cb); } #endif if (psksessf != NULL) { BIO *stmp = BIO_new_file(psksessf, "r"); if (stmp == NULL) { BIO_printf(bio_err, "Can't open PSK session file %s\n", psksessf); ERR_print_errors(bio_err); goto end; } psksess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL); BIO_free(stmp); if (psksess == NULL) { BIO_printf(bio_err, "Can't read PSK session file %s\n", psksessf); ERR_print_errors(bio_err); goto end; } } if (psk_key != NULL || psksess != NULL) SSL_CTX_set_psk_use_session_callback(ctx, psk_use_session_cb); #ifndef OPENSSL_NO_SRTP if (srtp_profiles != NULL) { /* Returns 0 on success! */ if (SSL_CTX_set_tlsext_use_srtp(ctx, srtp_profiles) != 0) { BIO_printf(bio_err, "Error setting SRTP profile\n"); ERR_print_errors(bio_err); goto end; } } #endif if (exc != NULL) ssl_ctx_set_excert(ctx, exc); #if !defined(OPENSSL_NO_NEXTPROTONEG) if (next_proto.data != NULL) SSL_CTX_set_next_proto_select_cb(ctx, next_proto_cb, &next_proto); #endif if (alpn_in) { size_t alpn_len; unsigned char *alpn = next_protos_parse(&alpn_len, alpn_in); if (alpn == NULL) { BIO_printf(bio_err, "Error parsing -alpn argument\n"); goto end; } /* Returns 0 on success! */ if (SSL_CTX_set_alpn_protos(ctx, alpn, alpn_len) != 0) { BIO_printf(bio_err, "Error setting ALPN\n"); goto end; } OPENSSL_free(alpn); } for (i = 0; i < serverinfo_count; i++) { if (!SSL_CTX_add_client_custom_ext(ctx, serverinfo_types[i], NULL, NULL, NULL, serverinfo_cli_parse_cb, NULL)) { BIO_printf(bio_err, "Warning: Unable to add custom extension %u, skipping\n", serverinfo_types[i]); } } if (state) SSL_CTX_set_info_callback(ctx, apps_ssl_info_callback); #ifndef OPENSSL_NO_CT /* Enable SCT processing, without early connection termination */ if (ct_validation && !SSL_CTX_enable_ct(ctx, SSL_CT_VALIDATION_PERMISSIVE)) { ERR_print_errors(bio_err); goto end; } if (!ctx_set_ctlog_list_file(ctx, ctlog_file)) { if (ct_validation) { ERR_print_errors(bio_err); goto end; } /* * If CT validation is not enabled, the log list isn't needed so don't * show errors or abort. We try to load it regardless because then we * can show the names of the logs any SCTs came from (SCTs may be seen * even with validation disabled). */ ERR_clear_error(); } #endif SSL_CTX_set_verify(ctx, verify, verify_callback); if (!ctx_set_verify_locations(ctx, CAfile, noCAfile, CApath, noCApath, CAstore, noCAstore)) { ERR_print_errors(bio_err); goto end; } ssl_ctx_add_crls(ctx, crls, crl_download); if (!set_cert_key_stuff(ctx, cert, key, chain, build_chain)) goto end; if (!noservername) { tlsextcbp.biodebug = bio_err; SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb); SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp); } #ifndef OPENSSL_NO_SRP if (srp_arg.srplogin != NULL && !set_up_srp_arg(ctx, &srp_arg, srp_lateuser, c_msg, c_debug)) goto end; # endif if (dane_tlsa_domain != NULL) { if (SSL_CTX_dane_enable(ctx) <= 0) { BIO_printf(bio_err, "%s: Error enabling DANE TLSA authentication.\n", prog); ERR_print_errors(bio_err); goto end; } } /* * In TLSv1.3 NewSessionTicket messages arrive after the handshake and can * come at any time. Therefore, we use a callback to write out the session * when we know about it. This approach works for < TLSv1.3 as well. */ SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_CLIENT | SSL_SESS_CACHE_NO_INTERNAL_STORE); SSL_CTX_sess_set_new_cb(ctx, new_session_cb); if (set_keylog_file(ctx, keylog_file)) goto end; con = SSL_new(ctx); if (con == NULL) goto end; if (enable_pha) SSL_set_post_handshake_auth(con, 1); if (enable_client_rpk) if (!SSL_set1_client_cert_type(con, cert_type_rpk, sizeof(cert_type_rpk))) { BIO_printf(bio_err, "Error setting client certificate types\n"); goto end; } if (enable_server_rpk) { if (!SSL_set1_server_cert_type(con, cert_type_rpk, sizeof(cert_type_rpk))) { BIO_printf(bio_err, "Error setting server certificate types\n"); goto end; } } if (sess_in != NULL) { SSL_SESSION *sess; BIO *stmp = BIO_new_file(sess_in, "r"); if (stmp == NULL) { BIO_printf(bio_err, "Can't open session file %s\n", sess_in); ERR_print_errors(bio_err); goto end; } sess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL); BIO_free(stmp); if (sess == NULL) { BIO_printf(bio_err, "Can't open session file %s\n", sess_in); ERR_print_errors(bio_err); goto end; } if (!SSL_set_session(con, sess)) { BIO_printf(bio_err, "Can't set session\n"); ERR_print_errors(bio_err); goto end; } SSL_SESSION_free(sess); } if (fallback_scsv) SSL_set_mode(con, SSL_MODE_SEND_FALLBACK_SCSV); if (!noservername && (servername != NULL || dane_tlsa_domain == NULL)) { if (servername == NULL) { if (host == NULL || is_dNS_name(host)) servername = (host == NULL) ? "localhost" : host; } if (servername != NULL && !SSL_set_tlsext_host_name(con, servername)) { BIO_printf(bio_err, "Unable to set TLS servername extension.\n"); ERR_print_errors(bio_err); goto end; } } if (dane_tlsa_domain != NULL) { if (SSL_dane_enable(con, dane_tlsa_domain) <= 0) { BIO_printf(bio_err, "%s: Error enabling DANE TLSA " "authentication.\n", prog); ERR_print_errors(bio_err); goto end; } if (dane_tlsa_rrset == NULL) { BIO_printf(bio_err, "%s: DANE TLSA authentication requires at " "least one -dane_tlsa_rrdata option.\n", prog); goto end; } if (tlsa_import_rrset(con, dane_tlsa_rrset) <= 0) { BIO_printf(bio_err, "%s: Failed to import any TLSA " "records.\n", prog); goto end; } if (dane_ee_no_name) SSL_dane_set_flags(con, DANE_FLAG_NO_DANE_EE_NAMECHECKS); } else if (dane_tlsa_rrset != NULL) { BIO_printf(bio_err, "%s: DANE TLSA authentication requires the " "-dane_tlsa_domain option.\n", prog); goto end; } #ifndef OPENSSL_NO_DTLS if (isdtls && tfo) { BIO_printf(bio_err, "%s: DTLS does not support the -tfo option\n", prog); goto end; } #endif #ifndef OPENSSL_NO_QUIC if (isquic && tfo) { BIO_printf(bio_err, "%s: QUIC does not support the -tfo option\n", prog); goto end; } if (isquic && alpn_in == NULL) { BIO_printf(bio_err, "%s: QUIC requires ALPN to be specified (e.g. \"h3\" for HTTP/3) via the -alpn option\n", prog); goto end; } #endif if (tfo) BIO_printf(bio_c_out, "Connecting via TFO\n"); re_start: /* peer_addr might be set from previous connections */ BIO_ADDR_free(peer_addr); peer_addr = NULL; if (init_client(&sock, host, port, bindhost, bindport, socket_family, socket_type, protocol, tfo, !isquic, &peer_addr) == 0) { BIO_printf(bio_err, "connect:errno=%d\n", get_last_socket_error()); BIO_closesocket(sock); goto end; } BIO_printf(bio_c_out, "CONNECTED(%08X)\n", sock); /* * QUIC always uses a non-blocking socket - and we have to switch on * non-blocking mode at the SSL level */ if (c_nbio || isquic) { if (!BIO_socket_nbio(sock, 1)) { ERR_print_errors(bio_err); goto end; } if (c_nbio) { if (isquic && !SSL_set_blocking_mode(con, 0)) goto end; BIO_printf(bio_c_out, "Turned on non blocking io\n"); } } #ifndef OPENSSL_NO_DTLS if (isdtls) { union BIO_sock_info_u peer_info; #ifndef OPENSSL_NO_SCTP if (protocol == IPPROTO_SCTP) sbio = BIO_new_dgram_sctp(sock, BIO_NOCLOSE); else #endif sbio = BIO_new_dgram(sock, BIO_NOCLOSE); if (sbio == NULL || (peer_info.addr = BIO_ADDR_new()) == NULL) { BIO_printf(bio_err, "memory allocation failure\n"); BIO_free(sbio); BIO_closesocket(sock); goto end; } if (!BIO_sock_info(sock, BIO_SOCK_INFO_ADDRESS, &peer_info)) { BIO_printf(bio_err, "getsockname:errno=%d\n", get_last_socket_error()); BIO_free(sbio); BIO_ADDR_free(peer_info.addr); BIO_closesocket(sock); goto end; } (void)BIO_ctrl_set_connected(sbio, peer_info.addr); BIO_ADDR_free(peer_info.addr); peer_info.addr = NULL; if (enable_timeouts) { timeout.tv_sec = 0; timeout.tv_usec = DGRAM_RCV_TIMEOUT; BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout); timeout.tv_sec = 0; timeout.tv_usec = DGRAM_SND_TIMEOUT; BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout); } if (socket_mtu) { if (socket_mtu < DTLS_get_link_min_mtu(con)) { BIO_printf(bio_err, "MTU too small. Must be at least %ld\n", DTLS_get_link_min_mtu(con)); BIO_free(sbio); goto shut; } SSL_set_options(con, SSL_OP_NO_QUERY_MTU); if (!DTLS_set_link_mtu(con, socket_mtu)) { BIO_printf(bio_err, "Failed to set MTU\n"); BIO_free(sbio); goto shut; } } else { /* want to do MTU discovery */ BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL); } } else #endif /* OPENSSL_NO_DTLS */ #ifndef OPENSSL_NO_QUIC if (isquic) { sbio = BIO_new_dgram(sock, BIO_NOCLOSE); if (!SSL_set1_initial_peer_addr(con, peer_addr)) { BIO_printf(bio_err, "Failed to set the initial peer address\n"); goto shut; } } else #endif sbio = BIO_new_socket(sock, BIO_NOCLOSE); if (sbio == NULL) { BIO_printf(bio_err, "Unable to create BIO\n"); ERR_print_errors(bio_err); BIO_closesocket(sock); goto end; } /* Now that we're using a BIO... */ if (tfo) { (void)BIO_set_conn_address(sbio, peer_addr); (void)BIO_set_tfo(sbio, 1); } if (nbio_test) { BIO *test; test = BIO_new(BIO_f_nbio_test()); if (test == NULL) { BIO_printf(bio_err, "Unable to create BIO\n"); BIO_free(sbio); goto shut; } sbio = BIO_push(test, sbio); } if (c_debug) { BIO_set_callback_ex(sbio, bio_dump_callback); BIO_set_callback_arg(sbio, (char *)bio_c_out); } if (c_msg) { #ifndef OPENSSL_NO_SSL_TRACE if (c_msg == 2) SSL_set_msg_callback(con, SSL_trace); else #endif SSL_set_msg_callback(con, msg_cb); SSL_set_msg_callback_arg(con, bio_c_msg ? bio_c_msg : bio_c_out); } if (c_tlsextdebug) { SSL_set_tlsext_debug_callback(con, tlsext_cb); SSL_set_tlsext_debug_arg(con, bio_c_out); } #ifndef OPENSSL_NO_OCSP if (c_status_req) { SSL_set_tlsext_status_type(con, TLSEXT_STATUSTYPE_ocsp); SSL_CTX_set_tlsext_status_cb(ctx, ocsp_resp_cb); SSL_CTX_set_tlsext_status_arg(ctx, bio_c_out); } #endif SSL_set_bio(con, sbio, sbio); SSL_set_connect_state(con); /* ok, lets connect */ if (fileno_stdin() > SSL_get_fd(con)) width = fileno_stdin() + 1; else width = SSL_get_fd(con) + 1; read_tty = 1; write_tty = 0; tty_on = 0; read_ssl = 1; write_ssl = 1; first_loop = 1; cbuf_len = 0; cbuf_off = 0; sbuf_len = 0; sbuf_off = 0; #ifndef OPENSSL_NO_HTTP if (proxystr != NULL) { /* Here we must use the connect string target host & port */ if (!OSSL_HTTP_proxy_connect(sbio, thost, tport, proxyuser, proxypass, 0 /* no timeout */, bio_err, prog)) goto shut; } #endif switch ((PROTOCOL_CHOICE) starttls_proto) { case PROTO_OFF: break; case PROTO_LMTP: case PROTO_SMTP: { /* * This is an ugly hack that does a lot of assumptions. We do * have to handle multi-line responses which may come in a single * packet or not. We therefore have to use BIO_gets() which does * need a buffering BIO. So during the initial chitchat we do * push a buffering BIO into the chain that is removed again * later on to not disturb the rest of the s_client operation. */ int foundit = 0; BIO *fbio = BIO_new(BIO_f_buffer()); if (fbio == NULL) { BIO_printf(bio_err, "Unable to create BIO\n"); goto shut; } BIO_push(fbio, sbio); /* Wait for multi-line response to end from LMTP or SMTP */ do { mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ); } while (mbuf_len > 3 && mbuf[3] == '-'); if (protohost == NULL) protohost = "mail.example.com"; if (starttls_proto == (int)PROTO_LMTP) BIO_printf(fbio, "LHLO %s\r\n", protohost); else BIO_printf(fbio, "EHLO %s\r\n", protohost); (void)BIO_flush(fbio); /* * Wait for multi-line response to end LHLO LMTP or EHLO SMTP * response. */ do { mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ); if (strstr(mbuf, "STARTTLS")) foundit = 1; } while (mbuf_len > 3 && mbuf[3] == '-'); (void)BIO_flush(fbio); BIO_pop(fbio); BIO_free(fbio); if (!foundit) BIO_printf(bio_err, "Didn't find STARTTLS in server response," " trying anyway...\n"); BIO_printf(sbio, "STARTTLS\r\n"); BIO_read(sbio, sbuf, BUFSIZZ); } break; case PROTO_POP3: { BIO_read(sbio, mbuf, BUFSIZZ); BIO_printf(sbio, "STLS\r\n"); mbuf_len = BIO_read(sbio, sbuf, BUFSIZZ); if (mbuf_len < 0) { BIO_printf(bio_err, "BIO_read failed\n"); goto end; } } break; case PROTO_IMAP: { int foundit = 0; BIO *fbio = BIO_new(BIO_f_buffer()); if (fbio == NULL) { BIO_printf(bio_err, "Unable to create BIO\n"); goto shut; } BIO_push(fbio, sbio); BIO_gets(fbio, mbuf, BUFSIZZ); /* STARTTLS command requires CAPABILITY... */ BIO_printf(fbio, ". CAPABILITY\r\n"); (void)BIO_flush(fbio); /* wait for multi-line CAPABILITY response */ do { mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ); if (strstr(mbuf, "STARTTLS")) foundit = 1; } while (mbuf_len > 3 && mbuf[0] != '.'); (void)BIO_flush(fbio); BIO_pop(fbio); BIO_free(fbio); if (!foundit) BIO_printf(bio_err, "Didn't find STARTTLS in server response," " trying anyway...\n"); BIO_printf(sbio, ". STARTTLS\r\n"); BIO_read(sbio, sbuf, BUFSIZZ); } break; case PROTO_FTP: { BIO *fbio = BIO_new(BIO_f_buffer()); if (fbio == NULL) { BIO_printf(bio_err, "Unable to create BIO\n"); goto shut; } BIO_push(fbio, sbio); /* wait for multi-line response to end from FTP */ do { mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ); } while (mbuf_len > 3 && (!isdigit((unsigned char)mbuf[0]) || !isdigit((unsigned char)mbuf[1]) || !isdigit((unsigned char)mbuf[2]) || mbuf[3] != ' ')); (void)BIO_flush(fbio); BIO_pop(fbio); BIO_free(fbio); BIO_printf(sbio, "AUTH TLS\r\n"); BIO_read(sbio, sbuf, BUFSIZZ); } break; case PROTO_XMPP: case PROTO_XMPP_SERVER: { int seen = 0; BIO_printf(sbio, "", starttls_proto == PROTO_XMPP ? "client" : "server", protohost ? protohost : host); seen = BIO_read(sbio, mbuf, BUFSIZZ); if (seen < 0) { BIO_printf(bio_err, "BIO_read failed\n"); goto end; } mbuf[seen] = '\0'; while (!strstr (mbuf, ""); seen = BIO_read(sbio, sbuf, BUFSIZZ); if (seen < 0) { BIO_printf(bio_err, "BIO_read failed\n"); goto shut; } sbuf[seen] = '\0'; if (!strstr(sbuf, "= bytes) { BIO_printf(bio_err, "Cannot confirm server version. "); goto shut; } else if (packet[pos++] == '\0') { break; } } /* make sure we have at least 15 bytes left in the packet */ if (pos + 15 > bytes) { BIO_printf(bio_err, "MySQL server handshake packet is broken.\n"); goto shut; } pos += 12; /* skip over conn id[4] + SALT[8] */ if (packet[pos++] != '\0') { /* verify filler */ BIO_printf(bio_err, "MySQL packet is broken.\n"); goto shut; } /* capability flags[2] */ if (!((packet[pos] + (packet[pos + 1] << 8)) & ssl_flg)) { BIO_printf(bio_err, "MySQL server does not support SSL.\n"); goto shut; } /* Sending SSL Handshake packet. */ BIO_write(sbio, ssl_req, sizeof(ssl_req)); (void)BIO_flush(sbio); } break; case PROTO_POSTGRES: { static const unsigned char ssl_request[] = { /* Length SSLRequest */ 0, 0, 0, 8, 4, 210, 22, 47 }; int bytes; /* Send SSLRequest packet */ BIO_write(sbio, ssl_request, 8); (void)BIO_flush(sbio); /* Reply will be a single S if SSL is enabled */ bytes = BIO_read(sbio, sbuf, BUFSIZZ); if (bytes != 1 || sbuf[0] != 'S') goto shut; } break; case PROTO_NNTP: { int foundit = 0; BIO *fbio = BIO_new(BIO_f_buffer()); if (fbio == NULL) { BIO_printf(bio_err, "Unable to create BIO\n"); goto end; } BIO_push(fbio, sbio); BIO_gets(fbio, mbuf, BUFSIZZ); /* STARTTLS command requires CAPABILITIES... */ BIO_printf(fbio, "CAPABILITIES\r\n"); (void)BIO_flush(fbio); BIO_gets(fbio, mbuf, BUFSIZZ); /* no point in trying to parse the CAPABILITIES response if there is none */ if (strstr(mbuf, "101") != NULL) { /* wait for multi-line CAPABILITIES response */ do { mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ); if (strstr(mbuf, "STARTTLS")) foundit = 1; } while (mbuf_len > 1 && mbuf[0] != '.'); } (void)BIO_flush(fbio); BIO_pop(fbio); BIO_free(fbio); if (!foundit) BIO_printf(bio_err, "Didn't find STARTTLS in server response," " trying anyway...\n"); BIO_printf(sbio, "STARTTLS\r\n"); mbuf_len = BIO_read(sbio, mbuf, BUFSIZZ); if (mbuf_len < 0) { BIO_printf(bio_err, "BIO_read failed\n"); goto end; } mbuf[mbuf_len] = '\0'; if (strstr(mbuf, "382") == NULL) { BIO_printf(bio_err, "STARTTLS failed: %s", mbuf); goto shut; } } break; case PROTO_SIEVE: { int foundit = 0; BIO *fbio = BIO_new(BIO_f_buffer()); if (fbio == NULL) { BIO_printf(bio_err, "Unable to create BIO\n"); goto end; } BIO_push(fbio, sbio); /* wait for multi-line response to end from Sieve */ do { mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ); /* * According to RFC 5804 § 1.7, capability * is case-insensitive, make it uppercase */ if (mbuf_len > 1 && mbuf[0] == '"') { make_uppercase(mbuf); if (HAS_PREFIX(mbuf, "\"STARTTLS\"")) foundit = 1; } } while (mbuf_len > 1 && mbuf[0] == '"'); (void)BIO_flush(fbio); BIO_pop(fbio); BIO_free(fbio); if (!foundit) BIO_printf(bio_err, "Didn't find STARTTLS in server response," " trying anyway...\n"); BIO_printf(sbio, "STARTTLS\r\n"); mbuf_len = BIO_read(sbio, mbuf, BUFSIZZ); if (mbuf_len < 0) { BIO_printf(bio_err, "BIO_read failed\n"); goto end; } mbuf[mbuf_len] = '\0'; if (mbuf_len < 2) { BIO_printf(bio_err, "STARTTLS failed: %s", mbuf); goto shut; } /* * According to RFC 5804 § 2.2, response codes are case- * insensitive, make it uppercase but preserve the response. */ strncpy(sbuf, mbuf, 2); make_uppercase(sbuf); if (!HAS_PREFIX(sbuf, "OK")) { BIO_printf(bio_err, "STARTTLS not supported: %s", mbuf); goto shut; } } break; case PROTO_LDAP: { /* StartTLS Operation according to RFC 4511 */ static char ldap_tls_genconf[] = "asn1=SEQUENCE:LDAPMessage\n" "[LDAPMessage]\n" "messageID=INTEGER:1\n" "extendedReq=EXPLICIT:23A,IMPLICIT:0C," "FORMAT:ASCII,OCT:1.3.6.1.4.1.1466.20037\n"; long errline = -1; char *genstr = NULL; int result = -1; ASN1_TYPE *atyp = NULL; BIO *ldapbio = BIO_new(BIO_s_mem()); CONF *cnf = NCONF_new(NULL); if (ldapbio == NULL || cnf == NULL) { BIO_free(ldapbio); NCONF_free(cnf); goto end; } BIO_puts(ldapbio, ldap_tls_genconf); if (NCONF_load_bio(cnf, ldapbio, &errline) <= 0) { BIO_free(ldapbio); NCONF_free(cnf); if (errline <= 0) { BIO_printf(bio_err, "NCONF_load_bio failed\n"); goto end; } else { BIO_printf(bio_err, "Error on line %ld\n", errline); goto end; } } BIO_free(ldapbio); genstr = NCONF_get_string(cnf, "default", "asn1"); if (genstr == NULL) { NCONF_free(cnf); BIO_printf(bio_err, "NCONF_get_string failed\n"); goto end; } atyp = ASN1_generate_nconf(genstr, cnf); if (atyp == NULL) { NCONF_free(cnf); BIO_printf(bio_err, "ASN1_generate_nconf failed\n"); goto end; } NCONF_free(cnf); /* Send SSLRequest packet */ BIO_write(sbio, atyp->value.sequence->data, atyp->value.sequence->length); (void)BIO_flush(sbio); ASN1_TYPE_free(atyp); mbuf_len = BIO_read(sbio, mbuf, BUFSIZZ); if (mbuf_len < 0) { BIO_printf(bio_err, "BIO_read failed\n"); goto end; } result = ldap_ExtendedResponse_parse(mbuf, mbuf_len); if (result < 0) { BIO_printf(bio_err, "ldap_ExtendedResponse_parse failed\n"); goto shut; } else if (result > 0) { BIO_printf(bio_err, "STARTTLS failed, LDAP Result Code: %i\n", result); goto shut; } mbuf_len = 0; } break; } if (early_data_file != NULL && ((SSL_get0_session(con) != NULL && SSL_SESSION_get_max_early_data(SSL_get0_session(con)) > 0) || (psksess != NULL && SSL_SESSION_get_max_early_data(psksess) > 0))) { BIO *edfile = BIO_new_file(early_data_file, "r"); size_t readbytes, writtenbytes; int finish = 0; if (edfile == NULL) { BIO_printf(bio_err, "Cannot open early data file\n"); goto shut; } while (!finish) { if (!BIO_read_ex(edfile, cbuf, BUFSIZZ, &readbytes)) finish = 1; while (!SSL_write_early_data(con, cbuf, readbytes, &writtenbytes)) { switch (SSL_get_error(con, 0)) { case SSL_ERROR_WANT_WRITE: case SSL_ERROR_WANT_ASYNC: case SSL_ERROR_WANT_READ: /* Just keep trying - busy waiting */ continue; default: BIO_printf(bio_err, "Error writing early data\n"); BIO_free(edfile); ERR_print_errors(bio_err); goto shut; } } } BIO_free(edfile); } user_data_init(&user_data, con, cbuf, BUFSIZZ, cmdmode); for (;;) { FD_ZERO(&readfds); FD_ZERO(&writefds); if ((isdtls || isquic) && SSL_get_event_timeout(con, &timeout, &is_infinite) && !is_infinite) timeoutp = &timeout; else timeoutp = NULL; if (!SSL_is_init_finished(con) && SSL_total_renegotiations(con) == 0 && SSL_get_key_update_type(con) == SSL_KEY_UPDATE_NONE) { in_init = 1; tty_on = 0; } else { tty_on = 1; if (in_init) { in_init = 0; if (c_brief) { BIO_puts(bio_err, "CONNECTION ESTABLISHED\n"); print_ssl_summary(con); } print_stuff(bio_c_out, con, full_log); if (full_log > 0) full_log--; if (starttls_proto) { BIO_write(bio_err, mbuf, mbuf_len); /* We don't need to know any more */ if (!reconnect) starttls_proto = PROTO_OFF; } if (reconnect) { reconnect--; BIO_printf(bio_c_out, "drop connection and then reconnect\n"); do_ssl_shutdown(con); SSL_set_connect_state(con); BIO_closesocket(SSL_get_fd(con)); goto re_start; } } } if (!write_ssl) { do { switch (user_data_process(&user_data, &cbuf_len, &cbuf_off)) { default: BIO_printf(bio_err, "ERROR\n"); /* fall through */ case USER_DATA_PROCESS_SHUT: ret = 0; goto shut; case USER_DATA_PROCESS_RESTART: goto re_start; case USER_DATA_PROCESS_NO_DATA: break; case USER_DATA_PROCESS_CONTINUE: write_ssl = 1; break; } } while (!write_ssl && cbuf_len == 0 && user_data_has_data(&user_data)); if (cbuf_len > 0) { read_tty = 0; timeout.tv_sec = 0; timeout.tv_usec = 0; } else { read_tty = 1; } } ssl_pending = read_ssl && SSL_has_pending(con); if (!ssl_pending) { #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) if (tty_on) { /* * Note that select() returns when read _would not block_, * and EOF satisfies that. To avoid a CPU-hogging loop, * set the flag so we exit. */ if (read_tty && !at_eof) openssl_fdset(fileno_stdin(), &readfds); #if !defined(OPENSSL_SYS_VMS) if (write_tty) openssl_fdset(fileno_stdout(), &writefds); #endif } /* * Note that for QUIC we never actually check FD_ISSET() for the * underlying network fds. We just rely on select waking up when * they become readable/writeable and then SSL_handle_events() doing * the right thing. */ if ((!isquic && read_ssl) || (isquic && SSL_net_read_desired(con))) openssl_fdset(SSL_get_fd(con), &readfds); if ((!isquic && write_ssl) || (isquic && (first_loop || SSL_net_write_desired(con)))) openssl_fdset(SSL_get_fd(con), &writefds); #else if (!tty_on || !write_tty) { if ((!isquic && read_ssl) || (isquic && SSL_net_read_desired(con))) openssl_fdset(SSL_get_fd(con), &readfds); if ((!isquic && write_ssl) || (isquic && (first_loop || SSL_net_write_desired(con)))) openssl_fdset(SSL_get_fd(con), &writefds); } #endif /* * Note: under VMS with SOCKETSHR the second parameter is * currently of type (int *) whereas under other systems it is * (void *) if you don't have a cast it will choke the compiler: * if you do have a cast then you can either go for (int *) or * (void *). */ #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) /* * Under Windows/DOS we make the assumption that we can always * write to the tty: therefore, if we need to write to the tty we * just fall through. Otherwise we timeout the select every * second and see if there are any keypresses. Note: this is a * hack, in a proper Windows application we wouldn't do this. */ i = 0; if (!write_tty) { if (read_tty) { tv.tv_sec = 1; tv.tv_usec = 0; i = select(width, (void *)&readfds, (void *)&writefds, NULL, &tv); if (!i && (!has_stdin_waiting() || !read_tty)) continue; } else i = select(width, (void *)&readfds, (void *)&writefds, NULL, timeoutp); } #else i = select(width, (void *)&readfds, (void *)&writefds, NULL, timeoutp); #endif if (i < 0) { BIO_printf(bio_err, "bad select %d\n", get_last_socket_error()); goto shut; } } if (timeoutp != NULL) { SSL_handle_events(con); if (isdtls && !FD_ISSET(SSL_get_fd(con), &readfds) && !FD_ISSET(SSL_get_fd(con), &writefds)) BIO_printf(bio_err, "TIMEOUT occurred\n"); } if (!ssl_pending && ((!isquic && FD_ISSET(SSL_get_fd(con), &writefds)) || (isquic && (cbuf_len > 0 || first_loop)))) { k = SSL_write(con, &(cbuf[cbuf_off]), (unsigned int)cbuf_len); switch (SSL_get_error(con, k)) { case SSL_ERROR_NONE: cbuf_off += k; cbuf_len -= k; if (k <= 0) goto end; /* we have done a write(con,NULL,0); */ if (cbuf_len == 0) { read_tty = 1; write_ssl = 0; } else { /* if (cbuf_len > 0) */ read_tty = 0; write_ssl = 1; } break; case SSL_ERROR_WANT_WRITE: BIO_printf(bio_c_out, "write W BLOCK\n"); write_ssl = 1; read_tty = 0; break; case SSL_ERROR_WANT_ASYNC: BIO_printf(bio_c_out, "write A BLOCK\n"); wait_for_async(con); write_ssl = 1; read_tty = 0; break; case SSL_ERROR_WANT_READ: BIO_printf(bio_c_out, "write R BLOCK\n"); write_tty = 0; read_ssl = 1; write_ssl = 0; break; case SSL_ERROR_WANT_X509_LOOKUP: BIO_printf(bio_c_out, "write X BLOCK\n"); break; case SSL_ERROR_ZERO_RETURN: if (cbuf_len != 0) { BIO_printf(bio_c_out, "shutdown\n"); ret = 0; goto shut; } else { read_tty = 1; write_ssl = 0; break; } case SSL_ERROR_SYSCALL: if ((k != 0) || (cbuf_len != 0)) { int sockerr = get_last_socket_error(); if (!tfo || sockerr != EISCONN) { BIO_printf(bio_err, "write:errno=%d\n", sockerr); goto shut; } } else { read_tty = 1; write_ssl = 0; } break; case SSL_ERROR_WANT_ASYNC_JOB: /* This shouldn't ever happen in s_client - treat as an error */ case SSL_ERROR_SSL: ERR_print_errors(bio_err); goto shut; } } #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_VMS) /* Assume Windows/DOS/BeOS can always write */ else if (!ssl_pending && write_tty) #else else if (!ssl_pending && FD_ISSET(fileno_stdout(), &writefds)) #endif { #ifdef CHARSET_EBCDIC ascii2ebcdic(&(sbuf[sbuf_off]), &(sbuf[sbuf_off]), sbuf_len); #endif i = raw_write_stdout(&(sbuf[sbuf_off]), sbuf_len); if (i <= 0) { BIO_printf(bio_c_out, "DONE\n"); ret = 0; goto shut; } sbuf_len -= i; sbuf_off += i; if (sbuf_len <= 0) { read_ssl = 1; write_tty = 0; } } else if (ssl_pending || (!isquic && FD_ISSET(SSL_get_fd(con), &readfds))) { #ifdef RENEG { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii = 0; } } #endif k = SSL_read(con, sbuf, BUFSIZZ); switch (SSL_get_error(con, k)) { case SSL_ERROR_NONE: if (k <= 0) goto end; sbuf_off = 0; sbuf_len = k; read_ssl = 0; write_tty = 1; break; case SSL_ERROR_WANT_ASYNC: BIO_printf(bio_c_out, "read A BLOCK\n"); wait_for_async(con); write_tty = 0; read_ssl = 1; if ((read_tty == 0) && (write_ssl == 0)) write_ssl = 1; break; case SSL_ERROR_WANT_WRITE: BIO_printf(bio_c_out, "read W BLOCK\n"); write_ssl = 1; read_tty = 0; break; case SSL_ERROR_WANT_READ: BIO_printf(bio_c_out, "read R BLOCK\n"); write_tty = 0; read_ssl = 1; if ((read_tty == 0) && (write_ssl == 0)) write_ssl = 1; break; case SSL_ERROR_WANT_X509_LOOKUP: BIO_printf(bio_c_out, "read X BLOCK\n"); break; case SSL_ERROR_SYSCALL: ret = get_last_socket_error(); if (c_brief) BIO_puts(bio_err, "CONNECTION CLOSED BY SERVER\n"); else BIO_printf(bio_err, "read:errno=%d\n", ret); goto shut; case SSL_ERROR_ZERO_RETURN: BIO_printf(bio_c_out, "closed\n"); ret = 0; goto shut; case SSL_ERROR_WANT_ASYNC_JOB: /* This shouldn't ever happen in s_client. Treat as an error */ case SSL_ERROR_SSL: ERR_print_errors(bio_err); goto shut; } } /* don't wait for client input in the non-interactive mode */ else if (nointeractive) { ret = 0; goto shut; } /* OPENSSL_SYS_MSDOS includes OPENSSL_SYS_WINDOWS */ #if defined(OPENSSL_SYS_MSDOS) else if (has_stdin_waiting()) #else else if (FD_ISSET(fileno_stdin(), &readfds)) #endif { if (crlf) { int j, lf_num; i = raw_read_stdin(cbuf, BUFSIZZ / 2); lf_num = 0; /* both loops are skipped when i <= 0 */ for (j = 0; j < i; j++) if (cbuf[j] == '\n') lf_num++; for (j = i - 1; j >= 0; j--) { cbuf[j + lf_num] = cbuf[j]; if (cbuf[j] == '\n') { lf_num--; i++; cbuf[j + lf_num] = '\r'; } } assert(lf_num == 0); } else i = raw_read_stdin(cbuf, BUFSIZZ); #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) if (i == 0) at_eof = 1; #endif if (!c_ign_eof && i <= 0) { BIO_printf(bio_err, "DONE\n"); ret = 0; goto shut; } if (i > 0 && !user_data_add(&user_data, i)) { ret = 0; goto shut; } read_tty = 0; } first_loop = 0; } shut: if (in_init) print_stuff(bio_c_out, con, full_log); do_ssl_shutdown(con); /* * If we ended with an alert being sent, but still with data in the * network buffer to be read, then calling BIO_closesocket() will * result in a TCP-RST being sent. On some platforms (notably * Windows) then this will result in the peer immediately abandoning * the connection including any buffered alert data before it has * had a chance to be read. Shutting down the sending side first, * and then closing the socket sends TCP-FIN first followed by * TCP-RST. This seems to allow the peer to read the alert data. */ shutdown(SSL_get_fd(con), 1); /* SHUT_WR */ /* * We just said we have nothing else to say, but it doesn't mean that * the other side has nothing. It's even recommended to consume incoming * data. [In testing context this ensures that alerts are passed on...] */ timeout.tv_sec = 0; timeout.tv_usec = 500000; /* some extreme round-trip */ do { FD_ZERO(&readfds); openssl_fdset(sock, &readfds); } while (select(sock + 1, &readfds, NULL, NULL, &timeout) > 0 && BIO_read(sbio, sbuf, BUFSIZZ) > 0); BIO_closesocket(SSL_get_fd(con)); end: if (con != NULL) { if (prexit != 0) print_stuff(bio_c_out, con, 1); SSL_free(con); } SSL_SESSION_free(psksess); #if !defined(OPENSSL_NO_NEXTPROTONEG) OPENSSL_free(next_proto.data); #endif SSL_CTX_free(ctx); set_keylog_file(NULL, NULL); X509_free(cert); sk_X509_CRL_pop_free(crls, X509_CRL_free); EVP_PKEY_free(key); OSSL_STACK_OF_X509_free(chain); OPENSSL_free(pass); #ifndef OPENSSL_NO_SRP OPENSSL_free(srp_arg.srppassin); #endif OPENSSL_free(sname_alloc); BIO_ADDR_free(peer_addr); OPENSSL_free(connectstr); OPENSSL_free(bindstr); OPENSSL_free(bindhost); OPENSSL_free(bindport); OPENSSL_free(host); OPENSSL_free(port); OPENSSL_free(thost); OPENSSL_free(tport); X509_VERIFY_PARAM_free(vpm); ssl_excert_free(exc); sk_OPENSSL_STRING_free(ssl_args); sk_OPENSSL_STRING_free(dane_tlsa_rrset); SSL_CONF_CTX_free(cctx); OPENSSL_clear_free(cbuf, BUFSIZZ); OPENSSL_clear_free(sbuf, BUFSIZZ); OPENSSL_clear_free(mbuf, BUFSIZZ); clear_free(proxypass); release_engine(e); BIO_free(bio_c_out); bio_c_out = NULL; BIO_free(bio_c_msg); bio_c_msg = NULL; return ret; } static void print_stuff(BIO *bio, SSL *s, int full) { X509 *peer = NULL; STACK_OF(X509) *sk; const SSL_CIPHER *c; EVP_PKEY *public_key; int i, istls13 = (SSL_version(s) == TLS1_3_VERSION); long verify_result; #ifndef OPENSSL_NO_COMP const COMP_METHOD *comp, *expansion; #endif unsigned char *exportedkeymat; #ifndef OPENSSL_NO_CT const SSL_CTX *ctx = SSL_get_SSL_CTX(s); #endif if (full) { int got_a_chain = 0; sk = SSL_get_peer_cert_chain(s); if (sk != NULL) { got_a_chain = 1; BIO_printf(bio, "---\nCertificate chain\n"); for (i = 0; i < sk_X509_num(sk); i++) { BIO_printf(bio, "%2d s:", i); X509_NAME_print_ex(bio, X509_get_subject_name(sk_X509_value(sk, i)), 0, get_nameopt()); BIO_puts(bio, "\n"); BIO_printf(bio, " i:"); X509_NAME_print_ex(bio, X509_get_issuer_name(sk_X509_value(sk, i)), 0, get_nameopt()); BIO_puts(bio, "\n"); public_key = X509_get_pubkey(sk_X509_value(sk, i)); if (public_key != NULL) { BIO_printf(bio, " a:PKEY: %s, %d (bit); sigalg: %s\n", OBJ_nid2sn(EVP_PKEY_get_base_id(public_key)), EVP_PKEY_get_bits(public_key), OBJ_nid2sn(X509_get_signature_nid(sk_X509_value(sk, i)))); EVP_PKEY_free(public_key); } BIO_printf(bio, " v:NotBefore: "); ASN1_TIME_print(bio, X509_get0_notBefore(sk_X509_value(sk, i))); BIO_printf(bio, "; NotAfter: "); ASN1_TIME_print(bio, X509_get0_notAfter(sk_X509_value(sk, i))); BIO_puts(bio, "\n"); if (c_showcerts) PEM_write_bio_X509(bio, sk_X509_value(sk, i)); } } BIO_printf(bio, "---\n"); peer = SSL_get0_peer_certificate(s); if (peer != NULL) { BIO_printf(bio, "Server certificate\n"); /* Redundant if we showed the whole chain */ if (!(c_showcerts && got_a_chain)) PEM_write_bio_X509(bio, peer); dump_cert_text(bio, peer); } else { BIO_printf(bio, "no peer certificate available\n"); } /* Only display RPK information if configured */ if (SSL_get_negotiated_client_cert_type(s) == TLSEXT_cert_type_rpk) BIO_printf(bio, "Client-to-server raw public key negotiated\n"); if (SSL_get_negotiated_server_cert_type(s) == TLSEXT_cert_type_rpk) BIO_printf(bio, "Server-to-client raw public key negotiated\n"); if (enable_server_rpk) { EVP_PKEY *peer_rpk = SSL_get0_peer_rpk(s); if (peer_rpk != NULL) { BIO_printf(bio, "Server raw public key\n"); EVP_PKEY_print_public(bio, peer_rpk, 2, NULL); } else { BIO_printf(bio, "no peer rpk available\n"); } } print_ca_names(bio, s); ssl_print_sigalgs(bio, s); ssl_print_tmp_key(bio, s); #ifndef OPENSSL_NO_CT /* * When the SSL session is anonymous, or resumed via an abbreviated * handshake, no SCTs are provided as part of the handshake. While in * a resumed session SCTs may be present in the session's certificate, * no callbacks are invoked to revalidate these, and in any case that * set of SCTs may be incomplete. Thus it makes little sense to * attempt to display SCTs from a resumed session's certificate, and of * course none are associated with an anonymous peer. */ if (peer != NULL && !SSL_session_reused(s) && SSL_ct_is_enabled(s)) { const STACK_OF(SCT) *scts = SSL_get0_peer_scts(s); int sct_count = scts != NULL ? sk_SCT_num(scts) : 0; BIO_printf(bio, "---\nSCTs present (%i)\n", sct_count); if (sct_count > 0) { const CTLOG_STORE *log_store = SSL_CTX_get0_ctlog_store(ctx); BIO_printf(bio, "---\n"); for (i = 0; i < sct_count; ++i) { SCT *sct = sk_SCT_value(scts, i); BIO_printf(bio, "SCT validation status: %s\n", SCT_validation_status_string(sct)); SCT_print(sct, bio, 0, log_store); if (i < sct_count - 1) BIO_printf(bio, "\n---\n"); } BIO_printf(bio, "\n"); } } #endif BIO_printf(bio, "---\nSSL handshake has read %ju bytes " "and written %ju bytes\n", BIO_number_read(SSL_get_rbio(s)), BIO_number_written(SSL_get_wbio(s))); } print_verify_detail(s, bio); BIO_printf(bio, (SSL_session_reused(s) ? "---\nReused, " : "---\nNew, ")); c = SSL_get_current_cipher(s); BIO_printf(bio, "%s, Cipher is %s\n", SSL_CIPHER_get_version(c), SSL_CIPHER_get_name(c)); if (peer != NULL) { EVP_PKEY *pktmp; pktmp = X509_get0_pubkey(peer); BIO_printf(bio, "Server public key is %d bit\n", EVP_PKEY_get_bits(pktmp)); } ssl_print_secure_renegotiation_notes(bio, s); #ifndef OPENSSL_NO_COMP comp = SSL_get_current_compression(s); expansion = SSL_get_current_expansion(s); BIO_printf(bio, "Compression: %s\n", comp ? SSL_COMP_get_name(comp) : "NONE"); BIO_printf(bio, "Expansion: %s\n", expansion ? SSL_COMP_get_name(expansion) : "NONE"); #endif #ifndef OPENSSL_NO_KTLS if (BIO_get_ktls_send(SSL_get_wbio(s))) BIO_printf(bio_err, "Using Kernel TLS for sending\n"); if (BIO_get_ktls_recv(SSL_get_rbio(s))) BIO_printf(bio_err, "Using Kernel TLS for receiving\n"); #endif if (OSSL_TRACE_ENABLED(TLS)) { /* Print out local port of connection: useful for debugging */ int sock; union BIO_sock_info_u info; sock = SSL_get_fd(s); if ((info.addr = BIO_ADDR_new()) != NULL && BIO_sock_info(sock, BIO_SOCK_INFO_ADDRESS, &info)) { BIO_printf(bio_c_out, "LOCAL PORT is %u\n", ntohs(BIO_ADDR_rawport(info.addr))); } BIO_ADDR_free(info.addr); } #if !defined(OPENSSL_NO_NEXTPROTONEG) if (next_proto.status != -1) { const unsigned char *proto; unsigned int proto_len; SSL_get0_next_proto_negotiated(s, &proto, &proto_len); BIO_printf(bio, "Next protocol: (%d) ", next_proto.status); BIO_write(bio, proto, proto_len); BIO_write(bio, "\n", 1); } #endif { const unsigned char *proto; unsigned int proto_len; SSL_get0_alpn_selected(s, &proto, &proto_len); if (proto_len > 0) { BIO_printf(bio, "ALPN protocol: "); BIO_write(bio, proto, proto_len); BIO_write(bio, "\n", 1); } else BIO_printf(bio, "No ALPN negotiated\n"); } #ifndef OPENSSL_NO_SRTP { SRTP_PROTECTION_PROFILE *srtp_profile = SSL_get_selected_srtp_profile(s); if (srtp_profile) BIO_printf(bio, "SRTP Extension negotiated, profile=%s\n", srtp_profile->name); } #endif if (istls13) { switch (SSL_get_early_data_status(s)) { case SSL_EARLY_DATA_NOT_SENT: BIO_printf(bio, "Early data was not sent\n"); break; case SSL_EARLY_DATA_REJECTED: BIO_printf(bio, "Early data was rejected\n"); break; case SSL_EARLY_DATA_ACCEPTED: BIO_printf(bio, "Early data was accepted\n"); break; } /* * We also print the verify results when we dump session information, * but in TLSv1.3 we may not get that right away (or at all) depending * on when we get a NewSessionTicket. Therefore, we print it now as well. */ verify_result = SSL_get_verify_result(s); BIO_printf(bio, "Verify return code: %ld (%s)\n", verify_result, X509_verify_cert_error_string(verify_result)); } else { /* In TLSv1.3 we do this on arrival of a NewSessionTicket */ SSL_SESSION_print(bio, SSL_get_session(s)); } if (SSL_get_session(s) != NULL && keymatexportlabel != NULL) { BIO_printf(bio, "Keying material exporter:\n"); BIO_printf(bio, " Label: '%s'\n", keymatexportlabel); BIO_printf(bio, " Length: %i bytes\n", keymatexportlen); exportedkeymat = app_malloc(keymatexportlen, "export key"); if (SSL_export_keying_material(s, exportedkeymat, keymatexportlen, keymatexportlabel, strlen(keymatexportlabel), NULL, 0, 0) <= 0) { BIO_printf(bio, " Error\n"); } else { BIO_printf(bio, " Keying material: "); for (i = 0; i < keymatexportlen; i++) BIO_printf(bio, "%02X", exportedkeymat[i]); BIO_printf(bio, "\n"); } OPENSSL_free(exportedkeymat); } BIO_printf(bio, "---\n"); /* flush, or debugging output gets mixed with http response */ (void)BIO_flush(bio); } # ifndef OPENSSL_NO_OCSP static int ocsp_resp_cb(SSL *s, void *arg) { const unsigned char *p; int len; OCSP_RESPONSE *rsp; len = SSL_get_tlsext_status_ocsp_resp(s, &p); BIO_puts(arg, "OCSP response: "); if (p == NULL) { BIO_puts(arg, "no response sent\n"); return 1; } rsp = d2i_OCSP_RESPONSE(NULL, &p, len); if (rsp == NULL) { BIO_puts(arg, "response parse error\n"); BIO_dump_indent(arg, (char *)p, len, 4); return 0; } BIO_puts(arg, "\n======================================\n"); OCSP_RESPONSE_print(arg, rsp, 0); BIO_puts(arg, "======================================\n"); OCSP_RESPONSE_free(rsp); return 1; } # endif static int ldap_ExtendedResponse_parse(const char *buf, long rem) { const unsigned char *cur, *end; long len; int tag, xclass, inf, ret = -1; cur = (const unsigned char *)buf; end = cur + rem; /* * From RFC 4511: * * LDAPMessage ::= SEQUENCE { * messageID MessageID, * protocolOp CHOICE { * ... * extendedResp ExtendedResponse, * ... }, * controls [0] Controls OPTIONAL } * * ExtendedResponse ::= [APPLICATION 24] SEQUENCE { * COMPONENTS OF LDAPResult, * responseName [10] LDAPOID OPTIONAL, * responseValue [11] OCTET STRING OPTIONAL } * * LDAPResult ::= SEQUENCE { * resultCode ENUMERATED { * success (0), * ... * other (80), * ... }, * matchedDN LDAPDN, * diagnosticMessage LDAPString, * referral [3] Referral OPTIONAL } */ /* pull SEQUENCE */ inf = ASN1_get_object(&cur, &len, &tag, &xclass, rem); if (inf != V_ASN1_CONSTRUCTED || tag != V_ASN1_SEQUENCE || (rem = end - cur, len > rem)) { BIO_printf(bio_err, "Unexpected LDAP response\n"); goto end; } rem = len; /* ensure that we don't overstep the SEQUENCE */ /* pull MessageID */ inf = ASN1_get_object(&cur, &len, &tag, &xclass, rem); if (inf != V_ASN1_UNIVERSAL || tag != V_ASN1_INTEGER || (rem = end - cur, len > rem)) { BIO_printf(bio_err, "No MessageID\n"); goto end; } cur += len; /* shall we check for MessageId match or just skip? */ /* pull [APPLICATION 24] */ rem = end - cur; inf = ASN1_get_object(&cur, &len, &tag, &xclass, rem); if (inf != V_ASN1_CONSTRUCTED || xclass != V_ASN1_APPLICATION || tag != 24) { BIO_printf(bio_err, "Not ExtendedResponse\n"); goto end; } /* pull resultCode */ rem = end - cur; inf = ASN1_get_object(&cur, &len, &tag, &xclass, rem); if (inf != V_ASN1_UNIVERSAL || tag != V_ASN1_ENUMERATED || len == 0 || (rem = end - cur, len > rem)) { BIO_printf(bio_err, "Not LDAPResult\n"); goto end; } /* len should always be one, but just in case... */ for (ret = 0, inf = 0; inf < len; inf++) { ret <<= 8; ret |= cur[inf]; } /* There is more data, but we don't care... */ end: return ret; } /* * Host dNS Name verifier: used for checking that the hostname is in dNS format * before setting it as SNI */ static int is_dNS_name(const char *host) { const size_t MAX_LABEL_LENGTH = 63; size_t i; int isdnsname = 0; size_t length = strlen(host); size_t label_length = 0; int all_numeric = 1; /* * Deviation from strict DNS name syntax, also check names with '_' * Check DNS name syntax, any '-' or '.' must be internal, * and on either side of each '.' we can't have a '-' or '.'. * * If the name has just one label, we don't consider it a DNS name. */ for (i = 0; i < length && label_length < MAX_LABEL_LENGTH; ++i) { char c = host[i]; if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_') { label_length += 1; all_numeric = 0; continue; } if (c >= '0' && c <= '9') { label_length += 1; continue; } /* Dot and hyphen cannot be first or last. */ if (i > 0 && i < length - 1) { if (c == '-') { label_length += 1; continue; } /* * Next to a dot the preceding and following characters must not be * another dot or a hyphen. Otherwise, record that the name is * plausible, since it has two or more labels. */ if (c == '.' && host[i + 1] != '.' && host[i - 1] != '-' && host[i + 1] != '-') { label_length = 0; isdnsname = 1; continue; } } isdnsname = 0; break; } /* dNS name must not be all numeric and labels must be shorter than 64 characters. */ isdnsname &= !all_numeric && !(label_length == MAX_LABEL_LENGTH); return isdnsname; } static void user_data_init(struct user_data_st *user_data, SSL *con, char *buf, size_t bufmax, int mode) { user_data->con = con; user_data->buf = buf; user_data->bufmax = bufmax; user_data->buflen = 0; user_data->bufoff = 0; user_data->mode = mode; user_data->isfin = 0; } static int user_data_add(struct user_data_st *user_data, size_t i) { if (user_data->buflen != 0 || i > user_data->bufmax) return 0; user_data->buflen = i; user_data->bufoff = 0; return 1; } #define USER_COMMAND_HELP 0 #define USER_COMMAND_QUIT 1 #define USER_COMMAND_RECONNECT 2 #define USER_COMMAND_RENEGOTIATE 3 #define USER_COMMAND_KEY_UPDATE 4 #define USER_COMMAND_FIN 5 static int user_data_execute(struct user_data_st *user_data, int cmd, char *arg) { switch (cmd) { case USER_COMMAND_HELP: /* This only ever occurs in advanced mode, so just emit advanced help */ BIO_printf(bio_err, "Enter text to send to the peer followed by \n"); BIO_printf(bio_err, "To issue a command insert {cmd} or {cmd:arg} anywhere in the text\n"); BIO_printf(bio_err, "Entering {{ will send { to the peer\n"); BIO_printf(bio_err, "The following commands are available\n"); BIO_printf(bio_err, " {help}: Get this help text\n"); BIO_printf(bio_err, " {quit}: Close the connection to the peer\n"); BIO_printf(bio_err, " {reconnect}: Reconnect to the peer\n"); if (SSL_is_quic(user_data->con)) { BIO_printf(bio_err, " {fin}: Send FIN on the stream. No further writing is possible\n"); } else if(SSL_version(user_data->con) == TLS1_3_VERSION) { BIO_printf(bio_err, " {keyup:req|noreq}: Send a Key Update message\n"); BIO_printf(bio_err, " Arguments:\n"); BIO_printf(bio_err, " req = peer update requested (default)\n"); BIO_printf(bio_err, " noreq = peer update not requested\n"); } else { BIO_printf(bio_err, " {reneg}: Attempt to renegotiate\n"); } BIO_printf(bio_err, "\n"); return USER_DATA_PROCESS_NO_DATA; case USER_COMMAND_QUIT: BIO_printf(bio_err, "DONE\n"); return USER_DATA_PROCESS_SHUT; case USER_COMMAND_RECONNECT: BIO_printf(bio_err, "RECONNECTING\n"); do_ssl_shutdown(user_data->con); SSL_set_connect_state(user_data->con); BIO_closesocket(SSL_get_fd(user_data->con)); return USER_DATA_PROCESS_RESTART; case USER_COMMAND_RENEGOTIATE: BIO_printf(bio_err, "RENEGOTIATING\n"); if (!SSL_renegotiate(user_data->con)) break; return USER_DATA_PROCESS_CONTINUE; case USER_COMMAND_KEY_UPDATE: { int updatetype; if (OPENSSL_strcasecmp(arg, "req") == 0) updatetype = SSL_KEY_UPDATE_REQUESTED; else if (OPENSSL_strcasecmp(arg, "noreq") == 0) updatetype = SSL_KEY_UPDATE_NOT_REQUESTED; else return USER_DATA_PROCESS_BAD_ARGUMENT; BIO_printf(bio_err, "KEYUPDATE\n"); if (!SSL_key_update(user_data->con, updatetype)) break; return USER_DATA_PROCESS_CONTINUE; } case USER_COMMAND_FIN: if (!SSL_stream_conclude(user_data->con, 0)) break; user_data->isfin = 1; return USER_DATA_PROCESS_NO_DATA; default: break; } BIO_printf(bio_err, "ERROR\n"); ERR_print_errors(bio_err); return USER_DATA_PROCESS_SHUT; } static int user_data_process(struct user_data_st *user_data, size_t *len, size_t *off) { char *buf_start = user_data->buf + user_data->bufoff; size_t outlen = user_data->buflen; if (user_data->buflen == 0) { *len = 0; *off = 0; return USER_DATA_PROCESS_NO_DATA; } if (user_data->mode == USER_DATA_MODE_BASIC) { switch (buf_start[0]) { case 'Q': user_data->buflen = user_data->bufoff = *len = *off = 0; return user_data_execute(user_data, USER_COMMAND_QUIT, NULL); case 'C': user_data->buflen = user_data->bufoff = *len = *off = 0; return user_data_execute(user_data, USER_COMMAND_RECONNECT, NULL); case 'R': user_data->buflen = user_data->bufoff = *len = *off = 0; return user_data_execute(user_data, USER_COMMAND_RENEGOTIATE, NULL); case 'K': case 'k': user_data->buflen = user_data->bufoff = *len = *off = 0; return user_data_execute(user_data, USER_COMMAND_KEY_UPDATE, buf_start[0] == 'K' ? "req" : "noreq"); default: break; } } else if (user_data->mode == USER_DATA_MODE_ADVANCED) { char *cmd_start = buf_start; cmd_start[outlen] = '\0'; for (;;) { cmd_start = strchr(cmd_start, '{'); if (cmd_start == buf_start && *(cmd_start + 1) == '{') { /* The "{" is escaped, so skip it */ cmd_start += 2; buf_start++; user_data->bufoff++; user_data->buflen--; outlen--; continue; } break; } if (cmd_start == buf_start) { /* Command detected */ char *cmd_end = strchr(cmd_start, '}'); char *arg_start; int cmd = -1, ret = USER_DATA_PROCESS_NO_DATA; size_t oldoff; if (cmd_end == NULL) { /* Malformed command */ cmd_start[outlen - 1] = '\0'; BIO_printf(bio_err, "ERROR PROCESSING COMMAND. REST OF LINE IGNORED: %s\n", cmd_start); user_data->buflen = user_data->bufoff = *len = *off = 0; return USER_DATA_PROCESS_NO_DATA; } *cmd_end = '\0'; arg_start = strchr(cmd_start, ':'); if (arg_start != NULL) { *arg_start = '\0'; arg_start++; } /* Skip over the { */ cmd_start++; /* * Now we have cmd_start pointing to a NUL terminated string for * the command, and arg_start either being NULL or pointing to a * NUL terminated string for the argument. */ if (OPENSSL_strcasecmp(cmd_start, "help") == 0) { cmd = USER_COMMAND_HELP; } else if (OPENSSL_strcasecmp(cmd_start, "quit") == 0) { cmd = USER_COMMAND_QUIT; } else if (OPENSSL_strcasecmp(cmd_start, "reconnect") == 0) { cmd = USER_COMMAND_RECONNECT; } else if(SSL_is_quic(user_data->con)) { if (OPENSSL_strcasecmp(cmd_start, "fin") == 0) cmd = USER_COMMAND_FIN; } if (SSL_version(user_data->con) == TLS1_3_VERSION) { if (OPENSSL_strcasecmp(cmd_start, "keyup") == 0) { cmd = USER_COMMAND_KEY_UPDATE; if (arg_start == NULL) arg_start = "req"; } } else { /* (D)TLSv1.2 or below */ if (OPENSSL_strcasecmp(cmd_start, "reneg") == 0) cmd = USER_COMMAND_RENEGOTIATE; } if (cmd == -1) { BIO_printf(bio_err, "UNRECOGNISED COMMAND (IGNORED): %s\n", cmd_start); } else { ret = user_data_execute(user_data, cmd, arg_start); if (ret == USER_DATA_PROCESS_BAD_ARGUMENT) { BIO_printf(bio_err, "BAD ARGUMENT (COMMAND IGNORED): %s\n", arg_start); ret = USER_DATA_PROCESS_NO_DATA; } } oldoff = user_data->bufoff; user_data->bufoff = (cmd_end - user_data->buf) + 1; user_data->buflen -= user_data->bufoff - oldoff; if (user_data->buf + 1 == cmd_start && user_data->buflen == 1 && user_data->buf[user_data->bufoff] == '\n') { /* * This command was the only thing on the whole line. We * suppress the final `\n` */ user_data->bufoff = 0; user_data->buflen = 0; } *len = *off = 0; return ret; } else if (cmd_start != NULL) { /* * There is a command on this line, but its not at the start. Output * the start of the line, and we'll process the command next time * we call this function */ outlen = cmd_start - buf_start; } } if (user_data->isfin) { user_data->buflen = user_data->bufoff = *len = *off = 0; return USER_DATA_PROCESS_NO_DATA; } #ifdef CHARSET_EBCDIC ebcdic2ascii(buf_start, buf_start, outlen); #endif *len = outlen; *off = user_data->bufoff; user_data->buflen -= outlen; if (user_data->buflen == 0) user_data->bufoff = 0; else user_data->bufoff += outlen; return USER_DATA_PROCESS_CONTINUE; } static int user_data_has_data(struct user_data_st *user_data) { return user_data->buflen > 0; } #endif /* OPENSSL_NO_SOCK */