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openssl/apps/s_client.c
Richard Levitte 49b26f54f4 Adapt SSL_DEBUG to the new generic trace API 
Co-authored-by: Dr. Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>

Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/8198)
2019-03-06 11:15:13 +01:00

3626 lines
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/*
* Copyright 1995-2019 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 "e_os.h"
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <openssl/e_os2.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 <openssl/x509.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
#include <openssl/pem.h>
#include <openssl/rand.h>
#include <openssl/ocsp.h>
#include <openssl/bn.h>
#include <openssl/trace.h>
#include <openssl/async.h>
#ifndef OPENSSL_NO_SRP
# include <openssl/srp.h>
#endif
#ifndef OPENSSL_NO_CT
# include <openssl/ct.h>
#endif
#include "s_apps.h"
#include "timeouts.h"
#include "internal/sockets.h"
#if defined(__has_feature)
# if __has_feature(memory_sanitizer)
# include <sanitizer/msan_interface.h>
# endif
#endif
#undef BUFSIZZ
#define BUFSIZZ 1024*8
#define S_CLIENT_IRC_READ_TIMEOUT 8
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 char *base64encode (const void *buf, size_t len);
static int is_dNS_name(const char *host);
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;
}
static void do_ssl_shutdown(SSL *ssl)
{
int ret;
do {
/* We only do unidirectional shutdown */
ret = SSL_shutdown(ssl);
if (ret < 0) {
switch (SSL_get_error(ssl, ret)) {
case SSL_ERROR_WANT_READ:
case SSL_ERROR_WANT_WRITE:
case SSL_ERROR_WANT_ASYNC:
case SSL_ERROR_WANT_ASYNC_JOB:
/* We just do busy waiting. Nothing clever */
continue;
}
ret = 0;
}
} while (ret < 0);
}
/* 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_SRP
/* This is a context that we pass to all callbacks */
typedef struct srp_arg_st {
char *srppassin;
char *srplogin;
int msg; /* copy from c_msg */
int debug; /* copy from c_debug */
int amp; /* allow more groups */
int strength; /* minimal size for N */
} SRP_ARG;
# define SRP_NUMBER_ITERATIONS_FOR_PRIME 64
static int srp_Verify_N_and_g(const BIGNUM *N, const BIGNUM *g)
{
BN_CTX *bn_ctx = BN_CTX_new();
BIGNUM *p = BN_new();
BIGNUM *r = BN_new();
int ret =
g != NULL && N != NULL && bn_ctx != NULL && BN_is_odd(N) &&
BN_is_prime_ex(N, SRP_NUMBER_ITERATIONS_FOR_PRIME, bn_ctx, NULL) == 1 &&
p != NULL && BN_rshift1(p, N) &&
/* p = (N-1)/2 */
BN_is_prime_ex(p, SRP_NUMBER_ITERATIONS_FOR_PRIME, bn_ctx, NULL) == 1 &&
r != NULL &&
/* verify g^((N-1)/2) == -1 (mod N) */
BN_mod_exp(r, g, p, N, bn_ctx) &&
BN_add_word(r, 1) && BN_cmp(r, N) == 0;
BN_free(r);
BN_free(p);
BN_CTX_free(bn_ctx);
return ret;
}
/*-
* This callback is used here for two purposes:
* - extended debugging
* - making some primality tests for unknown groups
* The callback is only called for a non default group.
*
* An application does not need the call back at all if
* only the standard groups are used. In real life situations,
* client and server already share well known groups,
* thus there is no need to verify them.
* Furthermore, in case that a server actually proposes a group that
* is not one of those defined in RFC 5054, it is more appropriate
* to add the group to a static list and then compare since
* primality tests are rather cpu consuming.
*/
static int ssl_srp_verify_param_cb(SSL *s, void *arg)
{
SRP_ARG *srp_arg = (SRP_ARG *)arg;
BIGNUM *N = NULL, *g = NULL;
if (((N = SSL_get_srp_N(s)) == NULL) || ((g = SSL_get_srp_g(s)) == NULL))
return 0;
if (srp_arg->debug || srp_arg->msg || srp_arg->amp == 1) {
BIO_printf(bio_err, "SRP parameters:\n");
BIO_printf(bio_err, "\tN=");
BN_print(bio_err, N);
BIO_printf(bio_err, "\n\tg=");
BN_print(bio_err, g);
BIO_printf(bio_err, "\n");
}
if (SRP_check_known_gN_param(g, N))
return 1;
if (srp_arg->amp == 1) {
if (srp_arg->debug)
BIO_printf(bio_err,
"SRP param N and g are not known params, going to check deeper.\n");
/*
* The srp_moregroups is a real debugging feature. Implementors
* should rather add the value to the known ones. The minimal size
* has already been tested.
*/
if (BN_num_bits(g) <= BN_BITS && srp_Verify_N_and_g(N, g))
return 1;
}
BIO_printf(bio_err, "SRP param N and g rejected.\n");
return 0;
}
# define PWD_STRLEN 1024
static char *ssl_give_srp_client_pwd_cb(SSL *s, void *arg)
{
SRP_ARG *srp_arg = (SRP_ARG *)arg;
char *pass = app_malloc(PWD_STRLEN + 1, "SRP password buffer");
PW_CB_DATA cb_tmp;
int l;
cb_tmp.password = (char *)srp_arg->srppassin;
cb_tmp.prompt_info = "SRP user";
if ((l = password_callback(pass, PWD_STRLEN, 0, &cb_tmp)) < 0) {
BIO_printf(bio_err, "Can't read Password\n");
OPENSSL_free(pass);
return NULL;
}
*(pass + l) = '\0';
return pass;
}
#endif
#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_ERR = -1, OPT_EOF = 0, OPT_HELP,
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_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_SCTP, OPT_TIMEOUT, OPT_MTU, OPT_KEYFORM, OPT_PASS,
OPT_CERT_CHAIN, OPT_CAPATH, OPT_NOCAPATH, OPT_CHAINCAPATH, OPT_VERIFYCAPATH,
OPT_KEY, OPT_RECONNECT, OPT_BUILD_CHAIN, OPT_CAFILE, OPT_NOCAFILE,
OPT_CHAINCAFILE, OPT_VERIFYCAFILE, OPT_NEXTPROTONEG, OPT_ALPN,
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_V_ENUM,
OPT_X_ENUM,
OPT_S_ENUM,
OPT_FALLBACKSCSV, OPT_NOCMDS, 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_SCTP_LABEL_BUG,
OPT_R_ENUM
} OPTION_CHOICE;
const OPTIONS s_client_options[] = {
{"help", OPT_HELP, '-', "Display this summary"},
{"host", OPT_HOST, 's', "Use -connect instead"},
{"port", OPT_PORT, 'p', "Use -connect instead"},
{"connect", OPT_CONNECT, 's',
"TCP/IP where to connect (default is :" 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
{"verify", OPT_VERIFY, 'p', "Turn on peer certificate verification"},
{"cert", OPT_CERT, '<', "Certificate file to use, PEM format assumed"},
{"certform", OPT_CERTFORM, 'F',
"Certificate format (PEM or DER) PEM default"},
{"nameopt", OPT_NAMEOPT, 's', "Various certificate name options"},
{"key", OPT_KEY, 's', "Private key file to use, if not in -cert file"},
{"keyform", OPT_KEYFORM, 'E', "Key format (PEM, DER or engine) PEM default"},
{"pass", OPT_PASS, 's', "Private key file pass phrase source"},
{"CApath", OPT_CAPATH, '/', "PEM format directory of CA's"},
{"CAfile", OPT_CAFILE, '<', "PEM format file 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"},
{"requestCAfile", OPT_REQCAFILE, '<',
"PEM format file of CA names to send to the server"},
{"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"},
{"reconnect", OPT_RECONNECT, '-',
"Drop and re-make the connection with the same Session-ID"},
{"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"},
{"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]\""},
OPT_R_OPTIONS,
{"sess_out", OPT_SESS_OUT, '>', "File to write SSL session to"},
{"sess_in", OPT_SESS_IN, '<', "File to read SSL session from"},
#ifndef OPENSSL_NO_SRTP
{"use_srtp", OPT_USE_SRTP, 's',
"Offer SRTP key management with a colon-separated profile list"},
#endif
{"keymatexport", OPT_KEYMATEXPORT, 's',
"Export keying material using label"},
{"keymatexportlen", OPT_KEYMATEXPORTLEN, 'p',
"Export len bytes of keying material (default 20)"},
{"maxfraglen", OPT_MAXFRAGLEN, 'p',
"Enable Maximum Fragment Length Negotiation (len values: 512, 1024, 2048 and 4096)"},
{"fallback_scsv", OPT_FALLBACKSCSV, '-', "Send the fallback SCSV"},
{"name", OPT_PROTOHOST, 's',
"Hostname to use for \"-starttls lmtp\", \"-starttls smtp\" or \"-starttls xmpp[-server]\""},
{"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) PEM is default"},
{"verify_return_error", OPT_VERIFY_RET_ERROR, '-',
"Close connection on verification error"},
{"verify_quiet", OPT_VERIFY_QUIET, '-', "Restrict verify output to errors"},
{"brief", OPT_BRIEF, '-',
"Restrict output to brief summary of connection parameters"},
{"prexit", OPT_PREXIT, '-',
"Print session information when the program exits"},
{"security_debug", OPT_SECURITY_DEBUG, '-',
"Enable security debug messages"},
{"security_debug_verbose", OPT_SECURITY_DEBUG_VERBOSE, '-',
"Output more security debug output"},
{"cert_chain", OPT_CERT_CHAIN, '<',
"Certificate chain file (in PEM format)"},
{"chainCApath", OPT_CHAINCAPATH, '/',
"Use dir as certificate store path to build CA certificate chain"},
{"verifyCApath", OPT_VERIFYCAPATH, '/',
"Use dir as certificate store path to verify CA certificate"},
{"build_chain", OPT_BUILD_CHAIN, '-', "Build certificate chain"},
{"chainCAfile", OPT_CHAINCAFILE, '<',
"CA file for certificate chain (PEM format)"},
{"verifyCAfile", OPT_VERIFYCAFILE, '<',
"CA file for certificate verification (PEM format)"},
{"nocommands", OPT_NOCMDS, '-', "Do not use interactive command letters"},
{"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"},
#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"},
{"ssl_config", OPT_SSL_CONFIG, 's', "Use specified configuration file"},
{"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"},
OPT_S_OPTIONS,
OPT_V_OPTIONS,
OPT_X_OPTIONS,
#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"},
{"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_SSL_TRACE
{"trace", OPT_TRACE, '-', "Show trace output of protocol messages"},
#endif
#ifdef WATT32
{"wdebug", OPT_WDEBUG, '-', "WATT-32 tcp debugging"},
#endif
{"nbio", OPT_NBIO, '-', "Use non-blocking IO"},
{"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"},
#ifndef OPENSSL_NO_SRP
{"srpuser", OPT_SRPUSER, 's', "SRP authentication for 'user'"},
{"srppass", OPT_SRPPASS, 's', "Password for 'user'"},
{"srp_lateuser", OPT_SRP_LATEUSER, '-',
"SRP username into second ClientHello message"},
{"srp_moregroups", OPT_SRP_MOREGROUPS, '-',
"Tolerate other than the known g N values."},
{"srp_strength", OPT_SRP_STRENGTH, 'p', "Minimal length in bits for N"},
#endif
#ifndef OPENSSL_NO_NEXTPROTONEG
{"nextprotoneg", OPT_NEXTPROTONEG, 's',
"Enable NPN extension, considering named protocols supported (comma-separated list)"},
#endif
#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
#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
{"keylogfile", OPT_KEYLOG_FILE, '>', "Write TLS secrets to file"},
{"early_data", OPT_EARLY_DATA, '<', "File to send as early data"},
{"enable_pha", OPT_ENABLE_PHA, '-', "Enable post-handshake-authentication"},
{NULL, OPT_EOF, 0x00, NULL}
};
typedef enum PROTOCOL_choice {
PROTO_OFF,
PROTO_SMTP,
PROTO_POP3,
PROTO_IMAP,
PROTO_FTP,
PROTO_TELNET,
PROTO_XMPP,
PROTO_XMPP_SERVER,
PROTO_CONNECT,
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)
/* 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;
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, *host = NULL;
char *port = OPENSSL_strdup(PORT);
char *bindhost = NULL, *bindport = NULL;
char *passarg = NULL, *pass = NULL, *vfyCApath = NULL, *vfyCAfile = 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;
int build_chain = 0, cbuf_len, cbuf_off, cert_format = FORMAT_PEM;
int key_format = FORMAT_PEM, crlf = 0, full_log = 1, mbuf_len = 0;
int prexit = 0;
int sdebug = 0;
int reconnect = 0, verify = SSL_VERIFY_NONE, vpmtouched = 0;
int ret = 1, in_init = 1, i, nbio_test = 0, s = -1, k, width, state = 0;
int sbuf_len, sbuf_off, cmdletters = 1;
int socket_family = AF_UNSPEC, socket_type = SOCK_STREAM, protocol = 0;
int starttls_proto = PROTO_OFF, crl_format = FORMAT_PEM, crl_download = 0;
int write_tty, read_tty, write_ssl, read_ssl, tty_on, ssl_pending;
#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;
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;
#ifndef OPENSSL_NO_DTLS
int isdtls = 0;
#endif
char *psksessf = NULL;
int enable_pha = 0;
#ifndef OPENSSL_NO_SCTP
int sctp_label_bug = 0;
#endif
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
prog = opt_progname(argv[0]);
c_quiet = 0;
c_debug = 0;
c_showcerts = 0;
c_nbio = 0;
vpm = X509_VERIFY_PARAM_new();
cctx = SSL_CONF_CTX_new();
if (vpm == NULL || cctx == NULL) {
BIO_printf(bio_err, "%s: out of memory\n", prog);
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_<prot>'\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();
starttls_proto = PROTO_CONNECT;
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_PEMDER, &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_PREXIT:
prexit = 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:
cmdletters = 0;
break;
case OPT_ENGINE:
e = setup_engine(opt_arg(), 1);
break;
case OPT_SSL_CLIENT_ENGINE:
#ifndef OPENSSL_NO_ENGINE
ssl_client_engine = ENGINE_by_id(opt_arg());
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_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");
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;
break;
case OPT_TLS1_3:
min_version = TLS1_3_VERSION;
max_version = TLS1_3_VERSION;
break;
case OPT_TLS1_2:
min_version = TLS1_2_VERSION;
max_version = TLS1_2_VERSION;
break;
case OPT_TLS1_1:
min_version = TLS1_1_VERSION;
max_version = TLS1_1_VERSION;
break;
case OPT_TLS1:
min_version = TLS1_VERSION;
max_version = TLS1_VERSION;
break;
case OPT_DTLS:
#ifndef OPENSSL_NO_DTLS
meth = DTLS_client_method();
socket_type = SOCK_DGRAM;
isdtls = 1;
#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;
#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;
#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_PDE, &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_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_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;
}
}
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;
}
}
argc = opt_num_rest();
if (argc == 1) {
/* If there's a positional argument, it's the equivalent of
* OPT_CONNECT.
* Don't allow -connect and a separate argument.
*/
if (connectstr != NULL) {
BIO_printf(bio_err,
"%s: must not provide both -connect option and target parameter\n",
prog);
goto opthelp;
}
connect_type = use_inet;
freeandcopy(&connectstr, *opt_rest());
} else if (argc != 0) {
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 (proxystr != NULL) {
int res;
char *tmp_host = host, *tmp_port = port;
if (connectstr == NULL) {
BIO_printf(bio_err, "%s: -proxy requires use of -connect or target parameter\n", prog);
goto opthelp;
}
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 {
int res = 1;
char *tmp_host = host, *tmp_port = port;
if (connectstr != NULL)
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 (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 file");
if (key == NULL) {
ERR_print_errors(bio_err);
goto end;
}
}
if (cert_file != NULL) {
cert = load_cert(cert_file, cert_format, "client certificate file");
if (cert == NULL) {
ERR_print_errors(bio_err);
goto end;
}
}
if (chain_file != NULL) {
if (!load_certs(chain_file, &chain, FORMAT_PEM, NULL,
"client certificate chain"))
goto end;
}
if (crl_file != NULL) {
X509_CRL *crl;
crl = load_crl(crl_file, crl_format);
if (crl == NULL) {
BIO_puts(bio_err, "Error loading CRL\n");
ERR_print_errors(bio_err);
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);
} else if (bio_c_out == NULL)
bio_c_out = dup_bio_out(FORMAT_TEXT);
}
#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(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 (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, chCApath, chCAfile,
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);
ENGINE_free(ssl_client_engine);
goto end;
}
ENGINE_free(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, CApath, noCAfile, noCApath)) {
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) {
if (!srp_lateuser && !SSL_CTX_set_srp_username(ctx, srp_arg.srplogin)) {
BIO_printf(bio_err, "Unable to set SRP username\n");
goto end;
}
srp_arg.msg = c_msg;
srp_arg.debug = c_debug;
SSL_CTX_set_srp_cb_arg(ctx, &srp_arg);
SSL_CTX_set_srp_client_pwd_callback(ctx, ssl_give_srp_client_pwd_cb);
SSL_CTX_set_srp_strength(ctx, srp_arg.strength);
if (c_msg || c_debug || srp_arg.amp == 0)
SSL_CTX_set_srp_verify_param_callback(ctx,
ssl_srp_verify_param_cb);
}
# 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 (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;
}
re_start:
if (init_client(&s, host, port, bindhost, bindport, socket_family,
socket_type, protocol) == 0) {
BIO_printf(bio_err, "connect:errno=%d\n", get_last_socket_error());
BIO_closesocket(s);
goto end;
}
BIO_printf(bio_c_out, "CONNECTED(%08X)\n", s);
if (c_nbio) {
if (!BIO_socket_nbio(s, 1)) {
ERR_print_errors(bio_err);
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(s, BIO_NOCLOSE);
else
#endif
sbio = BIO_new_dgram(s, BIO_NOCLOSE);
if ((peer_info.addr = BIO_ADDR_new()) == NULL) {
BIO_printf(bio_err, "memory allocation failure\n");
BIO_closesocket(s);
goto end;
}
if (!BIO_sock_info(s, BIO_SOCK_INFO_ADDRESS, &peer_info)) {
BIO_printf(bio_err, "getsockname:errno=%d\n",
get_last_socket_error());
BIO_ADDR_free(peer_info.addr);
BIO_closesocket(s);
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 */
sbio = BIO_new_socket(s, BIO_NOCLOSE);
if (nbio_test) {
BIO *test;
test = BIO_new(BIO_f_nbio_test());
sbio = BIO_push(test, sbio);
}
if (c_debug) {
BIO_set_callback(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;
cbuf_len = 0;
cbuf_off = 0;
sbuf_len = 0;
sbuf_off = 0;
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());
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());
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());
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 && 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, "<stream:stream "
"xmlns:stream='http://etherx.jabber.org/streams' "
"xmlns='jabber:%s' to='%s' version='1.0'>",
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, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'")
&& !strstr(mbuf,
"<starttls xmlns=\"urn:ietf:params:xml:ns:xmpp-tls\""))
{
seen = BIO_read(sbio, mbuf, BUFSIZZ);
if (seen <= 0)
goto shut;
mbuf[seen] = '\0';
}
BIO_printf(sbio,
"<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
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, "<proceed"))
goto shut;
mbuf[0] = '\0';
}
break;
case PROTO_TELNET:
{
static const unsigned char tls_do[] = {
/* IAC DO START_TLS */
255, 253, 46
};
static const unsigned char tls_will[] = {
/* IAC WILL START_TLS */
255, 251, 46
};
static const unsigned char tls_follows[] = {
/* IAC SB START_TLS FOLLOWS IAC SE */
255, 250, 46, 1, 255, 240
};
int bytes;
/* Telnet server should demand we issue START_TLS */
bytes = BIO_read(sbio, mbuf, BUFSIZZ);
if (bytes != 3 || memcmp(mbuf, tls_do, 3) != 0)
goto shut;
/* Agree to issue START_TLS and send the FOLLOWS sub-command */
BIO_write(sbio, tls_will, 3);
BIO_write(sbio, tls_follows, 6);
(void)BIO_flush(sbio);
/* Telnet server also sent the FOLLOWS sub-command */
bytes = BIO_read(sbio, mbuf, BUFSIZZ);
if (bytes != 6 || memcmp(mbuf, tls_follows, 6) != 0)
goto shut;
}
break;
case PROTO_CONNECT:
{
enum {
error_proto, /* Wrong protocol, not even HTTP */
error_connect, /* CONNECT failed */
success
} foundit = error_connect;
BIO *fbio = BIO_new(BIO_f_buffer());
BIO_push(fbio, sbio);
BIO_printf(fbio, "CONNECT %s HTTP/1.0\r\n", connectstr);
/*
* Workaround for broken proxies which would otherwise close
* the connection when entering tunnel mode (eg Squid 2.6)
*/
BIO_printf(fbio, "Proxy-Connection: Keep-Alive\r\n");
/* Support for basic (base64) proxy authentication */
if (proxyuser != NULL) {
size_t l;
char *proxyauth, *proxyauthenc;
l = strlen(proxyuser);
if (proxypass != NULL)
l += strlen(proxypass);
proxyauth = app_malloc(l + 2, "Proxy auth string");
BIO_snprintf(proxyauth, l + 2, "%s:%s", proxyuser,
(proxypass != NULL) ? proxypass : "");
proxyauthenc = base64encode(proxyauth, strlen(proxyauth));
BIO_printf(fbio, "Proxy-Authorization: Basic %s\r\n",
proxyauthenc);
OPENSSL_clear_free(proxyauth, strlen(proxyauth));
OPENSSL_clear_free(proxyauthenc, strlen(proxyauthenc));
}
/* Terminate the HTTP CONNECT request */
BIO_printf(fbio, "\r\n");
(void)BIO_flush(fbio);
/*
* The first line is the HTTP response. According to RFC 7230,
* it's formated exactly like this:
*
* HTTP/d.d ddd Reason text\r\n
*/
mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
if (mbuf_len < (int)strlen("HTTP/1.0 200")) {
BIO_printf(bio_err,
"%s: HTTP CONNECT failed, insufficient response "
"from proxy (got %d octets)\n", prog, mbuf_len);
(void)BIO_flush(fbio);
BIO_pop(fbio);
BIO_free(fbio);
goto shut;
}
if (mbuf[8] != ' ') {
BIO_printf(bio_err,
"%s: HTTP CONNECT failed, incorrect response "
"from proxy\n", prog);
foundit = error_proto;
} else if (mbuf[9] != '2') {
BIO_printf(bio_err, "%s: HTTP CONNECT failed: %s ", prog,
&mbuf[9]);
} else {
foundit = success;
}
if (foundit != error_proto) {
/* Read past all following headers */
do {
mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
} while (mbuf_len > 2);
}
(void)BIO_flush(fbio);
BIO_pop(fbio);
BIO_free(fbio);
if (foundit != success) {
goto shut;
}
}
break;
case PROTO_IRC:
{
int numeric;
BIO *fbio = BIO_new(BIO_f_buffer());
BIO_push(fbio, sbio);
BIO_printf(fbio, "STARTTLS\r\n");
(void)BIO_flush(fbio);
width = SSL_get_fd(con) + 1;
do {
numeric = 0;
FD_ZERO(&readfds);
openssl_fdset(SSL_get_fd(con), &readfds);
timeout.tv_sec = S_CLIENT_IRC_READ_TIMEOUT;
timeout.tv_usec = 0;
/*
* If the IRCd doesn't respond within
* S_CLIENT_IRC_READ_TIMEOUT seconds, assume
* it doesn't support STARTTLS. Many IRCds
* will not give _any_ sort of response to a
* STARTTLS command when it's not supported.
*/
if (!BIO_get_buffer_num_lines(fbio)
&& !BIO_pending(fbio)
&& !BIO_pending(sbio)
&& select(width, (void *)&readfds, NULL, NULL,
&timeout) < 1) {
BIO_printf(bio_err,
"Timeout waiting for response (%d seconds).\n",
S_CLIENT_IRC_READ_TIMEOUT);
break;
}
mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
if (mbuf_len < 1 || sscanf(mbuf, "%*s %d", &numeric) != 1)
break;
/* :example.net 451 STARTTLS :You have not registered */
/* :example.net 421 STARTTLS :Unknown command */
if ((numeric == 451 || numeric == 421)
&& strstr(mbuf, "STARTTLS") != NULL) {
BIO_printf(bio_err, "STARTTLS not supported: %s", mbuf);
break;
}
if (numeric == 691) {
BIO_printf(bio_err, "STARTTLS negotiation failed: ");
ERR_print_errors(bio_err);
break;
}
} while (numeric != 670);
(void)BIO_flush(fbio);
BIO_pop(fbio);
BIO_free(fbio);
if (numeric != 670) {
BIO_printf(bio_err, "Server does not support STARTTLS.\n");
ret = 1;
goto shut;
}
}
break;
case PROTO_MYSQL:
{
/* SSL request packet */
static const unsigned char ssl_req[] = {
/* payload_length, sequence_id */
0x20, 0x00, 0x00, 0x01,
/* payload */
/* capability flags, CLIENT_SSL always set */
0x85, 0xae, 0x7f, 0x00,
/* max-packet size */
0x00, 0x00, 0x00, 0x01,
/* character set */
0x21,
/* string[23] reserved (all [0]) */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
int bytes = 0;
int ssl_flg = 0x800;
int pos;
const unsigned char *packet = (const unsigned char *)sbuf;
/* Receiving Initial Handshake packet. */
bytes = BIO_read(sbio, (void *)packet, BUFSIZZ);
if (bytes < 0) {
BIO_printf(bio_err, "BIO_read failed\n");
goto shut;
/* Packet length[3], Packet number[1] + minimum payload[17] */
} else if (bytes < 21) {
BIO_printf(bio_err, "MySQL packet too short.\n");
goto shut;
} else if (bytes != (4 + packet[0] +
(packet[1] << 8) +
(packet[2] << 16))) {
BIO_printf(bio_err, "MySQL packet length does not match.\n");
goto shut;
/* protocol version[1] */
} else if (packet[4] != 0xA) {
BIO_printf(bio_err,
"Only MySQL protocol version 10 is supported.\n");
goto shut;
}
pos = 5;
/* server version[string+NULL] */
for (;;) {
if (pos >= 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());
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());
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 (strncmp(mbuf, "\"STARTTLS\"", 10) == 0)
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 (strncmp(sbuf, "OK", 2) != 0) {
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 (cnf == NULL) {
BIO_free(ldapbio);
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);
}
for (;;) {
FD_ZERO(&readfds);
FD_ZERO(&writefds);
if (SSL_is_dtls(con) && DTLSv1_get_timeout(con, &timeout))
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;
}
}
}
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
}
if (read_ssl)
openssl_fdset(SSL_get_fd(con), &readfds);
if (write_ssl)
openssl_fdset(SSL_get_fd(con), &writefds);
#else
if (!tty_on || !write_tty) {
if (read_ssl)
openssl_fdset(SSL_get_fd(con), &readfds);
if (write_ssl)
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 (SSL_is_dtls(con) && DTLSv1_handle_timeout(con) > 0)
BIO_printf(bio_err, "TIMEOUT occurred\n");
if (!ssl_pending && FD_ISSET(SSL_get_fd(con), &writefds)) {
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)) {
BIO_printf(bio_err, "write:errno=%d\n",
get_last_socket_error());
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 || 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, 1024 /* 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;
}
}
/* 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) || (cbuf[0] == 'Q' && cmdletters))) {
BIO_printf(bio_err, "DONE\n");
ret = 0;
goto shut;
}
if ((!c_ign_eof) && (cbuf[0] == 'R' && cmdletters)) {
BIO_printf(bio_err, "RENEGOTIATING\n");
SSL_renegotiate(con);
cbuf_len = 0;
} else if (!c_ign_eof && (cbuf[0] == 'K' || cbuf[0] == 'k' )
&& cmdletters) {
BIO_printf(bio_err, "KEYUPDATE\n");
SSL_key_update(con,
cbuf[0] == 'K' ? SSL_KEY_UPDATE_REQUESTED
: SSL_KEY_UPDATE_NOT_REQUESTED);
cbuf_len = 0;
}
#ifndef OPENSSL_NO_HEARTBEATS
else if ((!c_ign_eof) && (cbuf[0] == 'B' && cmdletters)) {
BIO_printf(bio_err, "HEARTBEATING\n");
SSL_heartbeat(con);
cbuf_len = 0;
}
#endif
else {
cbuf_len = i;
cbuf_off = 0;
#ifdef CHARSET_EBCDIC
ebcdic2ascii(cbuf, cbuf, i);
#endif
}
write_ssl = 1;
read_tty = 0;
}
}
ret = 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(s, &readfds);
} while (select(s + 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);
sk_X509_pop_free(chain, X509_free);
OPENSSL_free(pass);
#ifndef OPENSSL_NO_SRP
OPENSSL_free(srp_arg.srppassin);
#endif
OPENSSL_free(connectstr);
OPENSSL_free(bindstr);
OPENSSL_free(host);
OPENSSL_free(port);
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);
if (proxypass != NULL)
OPENSSL_clear_free(proxypass, strlen(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;
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");
if (c_showcerts)
PEM_write_bio_X509(bio, sk_X509_value(sk, i));
}
}
BIO_printf(bio, "---\n");
peer = SSL_get_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");
}
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_bits(pktmp));
}
BIO_printf(bio, "Secure Renegotiation IS%s supported\n",
SSL_get_secure_renegotiation_support(s) ? "" : " NOT");
#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");
#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)) {
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");
X509_free(peer);
/* 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;
}
/*
* BASE64 encoder: used only for encoding basic proxy authentication credentials
*/
static char *base64encode (const void *buf, size_t len)
{
int i;
size_t outl;
char *out;
/* Calculate size of encoded data */
outl = (len / 3);
if (len % 3 > 0)
outl++;
outl <<= 2;
out = app_malloc(outl + 1, "base64 encode buffer");
i = EVP_EncodeBlock((unsigned char *)out, buf, len);
assert(i <= (int)outl);
if (i < 0)
*out = '\0';
return out;
}
/*
* 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;
}
#endif /* OPENSSL_NO_SOCK */
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