2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
67 /* With IPv6, it looks like Digital has mixed up the proper order of
68 recursive header file inclusion, resulting in the compiler complaining
69 that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
70 is needed to have fileno() declared correctly... So let's define u_int */
71 #if defined(VMS) && defined(__DECC) && !defined(__U_INT)
73 typedef unsigned int u_int;
78 #include <openssl/x509.h>
79 #include <openssl/ssl.h>
80 #include <openssl/err.h>
81 #include <openssl/pem.h>
89 #if (defined(VMS) && __VMS_VER < 70000000)
90 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
95 #define PROG s_client_main
97 /*#define SSL_HOST_NAME "www.netscape.com" */
98 /*#define SSL_HOST_NAME "193.118.187.102" */
99 #define SSL_HOST_NAME "localhost"
101 /*#define TEST_CERT "client.pem" */ /* no default cert. */
104 #define BUFSIZZ 1024*8
106 extern int verify_depth;
107 extern int verify_error;
112 static int c_Pause=0;
113 static int c_debug=0;
114 static int c_showcerts=0;
116 static void sc_usage(void);
117 static void print_stuff(BIO *berr,SSL *con,int full);
118 static BIO *bio_c_out=NULL;
119 static int c_quiet=0;
121 static void sc_usage(void)
123 BIO_printf(bio_err,"usage: s_client args\n");
124 BIO_printf(bio_err,"\n");
125 BIO_printf(bio_err," -host host - use -connect instead\n");
126 BIO_printf(bio_err," -port port - use -connect instead\n");
127 BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
129 BIO_printf(bio_err," -verify arg - turn on peer certificate verification\n");
130 BIO_printf(bio_err," -cert arg - certificate file to use, PEM format assumed\n");
131 BIO_printf(bio_err," -key arg - Private key file to use, PEM format assumed, in cert file if\n");
132 BIO_printf(bio_err," not specified but cert file is.\n");
133 BIO_printf(bio_err," -CApath arg - PEM format directory of CA's\n");
134 BIO_printf(bio_err," -CAfile arg - PEM format file of CA's\n");
135 BIO_printf(bio_err," -reconnect - Drop and re-make the connection with the same Session-ID\n");
136 BIO_printf(bio_err," -pause - sleep(1) after each read(2) and write(2) system call\n");
137 BIO_printf(bio_err," -showcerts - show all certificates in the chain\n");
138 BIO_printf(bio_err," -debug - extra output\n");
139 BIO_printf(bio_err," -nbio_test - more ssl protocol testing\n");
140 BIO_printf(bio_err," -state - print the 'ssl' states\n");
142 BIO_printf(bio_err," -nbio - Run with non-blocking IO\n");
144 BIO_printf(bio_err," -crlf - convert LF from terminal into CRLF\n");
145 BIO_printf(bio_err," -quiet - no s_client output\n");
146 BIO_printf(bio_err," -ssl2 - just use SSLv2\n");
147 BIO_printf(bio_err," -ssl3 - just use SSLv3\n");
148 BIO_printf(bio_err," -tls1 - just use TLSv1\n");
149 BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
150 BIO_printf(bio_err," -bugs - Switch on all SSL implementation bug workarounds\n");
151 BIO_printf(bio_err," -cipher - prefered cipher to use, use the 'openssl ciphers'\n");
152 BIO_printf(bio_err," command to see what is available\n");
156 int MAIN(int argc, char **argv)
159 SSL *con=NULL,*con2=NULL;
160 int s,k,width,state=0;
161 char *cbuf=NULL,*sbuf=NULL;
162 int cbuf_len,cbuf_off;
163 int sbuf_len,sbuf_off;
164 fd_set readfds,writefds;
167 char *host=SSL_HOST_NAME;
168 char *cert_file=NULL,*key_file=NULL;
169 char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
170 int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
172 int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
174 int ret=1,in_init=1,i,nbio_test=0;
176 SSL_METHOD *meth=NULL;
182 #if !defined(NO_SSL2) && !defined(NO_SSL3)
183 meth=SSLv23_client_method();
184 #elif !defined(NO_SSL3)
185 meth=SSLv3_client_method();
186 #elif !defined(NO_SSL2)
187 meth=SSLv2_client_method();
197 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
199 if ( ((cbuf=Malloc(BUFSIZZ)) == NULL) ||
200 ((sbuf=Malloc(BUFSIZZ)) == NULL))
202 BIO_printf(bio_err,"out of memory\n");
207 verify_error=X509_V_OK;
216 if (strcmp(*argv,"-host") == 0)
218 if (--argc < 1) goto bad;
221 else if (strcmp(*argv,"-port") == 0)
223 if (--argc < 1) goto bad;
224 port=atoi(*(++argv));
225 if (port == 0) goto bad;
227 else if (strcmp(*argv,"-connect") == 0)
229 if (--argc < 1) goto bad;
230 if (!extract_host_port(*(++argv),&host,NULL,&port))
233 else if (strcmp(*argv,"-verify") == 0)
235 verify=SSL_VERIFY_PEER;
236 if (--argc < 1) goto bad;
237 verify_depth=atoi(*(++argv));
238 BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
240 else if (strcmp(*argv,"-cert") == 0)
242 if (--argc < 1) goto bad;
243 cert_file= *(++argv);
245 else if (strcmp(*argv,"-prexit") == 0)
247 else if (strcmp(*argv,"-crlf") == 0)
249 else if (strcmp(*argv,"-quiet") == 0)
251 else if (strcmp(*argv,"-pause") == 0)
253 else if (strcmp(*argv,"-debug") == 0)
255 else if (strcmp(*argv,"-showcerts") == 0)
257 else if (strcmp(*argv,"-nbio_test") == 0)
259 else if (strcmp(*argv,"-state") == 0)
262 else if (strcmp(*argv,"-ssl2") == 0)
263 meth=SSLv2_client_method();
266 else if (strcmp(*argv,"-ssl3") == 0)
267 meth=SSLv3_client_method();
270 else if (strcmp(*argv,"-tls1") == 0)
271 meth=TLSv1_client_method();
273 else if (strcmp(*argv,"-bugs") == 0)
275 else if (strcmp(*argv,"-key") == 0)
277 if (--argc < 1) goto bad;
280 else if (strcmp(*argv,"-reconnect") == 0)
284 else if (strcmp(*argv,"-CApath") == 0)
286 if (--argc < 1) goto bad;
289 else if (strcmp(*argv,"-CAfile") == 0)
291 if (--argc < 1) goto bad;
294 else if (strcmp(*argv,"-no_tls1") == 0)
295 off|=SSL_OP_NO_TLSv1;
296 else if (strcmp(*argv,"-no_ssl3") == 0)
297 off|=SSL_OP_NO_SSLv3;
298 else if (strcmp(*argv,"-no_ssl2") == 0)
299 off|=SSL_OP_NO_SSLv2;
300 else if (strcmp(*argv,"-cipher") == 0)
302 if (--argc < 1) goto bad;
306 else if (strcmp(*argv,"-nbio") == 0)
311 BIO_printf(bio_err,"unknown option %s\n",*argv);
325 app_RAND_load_file(NULL, bio_err, 0);
327 if (bio_c_out == NULL)
331 bio_c_out=BIO_new(BIO_s_null());
335 if (bio_c_out == NULL)
336 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
340 SSLeay_add_ssl_algorithms();
341 ctx=SSL_CTX_new(meth);
344 ERR_print_errors(bio_err);
349 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
351 SSL_CTX_set_options(ctx,off);
353 if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
355 SSL_CTX_set_cipher_list(ctx,cipher);
358 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
361 SSL_CTX_set_verify(ctx,verify,verify_callback);
362 if (!set_cert_stuff(ctx,cert_file,key_file))
365 if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
366 (!SSL_CTX_set_default_verify_paths(ctx)))
368 /* BIO_printf(bio_err,"error seting default verify locations\n"); */
369 ERR_print_errors(bio_err);
373 SSL_load_error_strings();
375 con=(SSL *)SSL_new(ctx);
376 /* SSL_set_cipher_list(con,"RC4-MD5"); */
380 if (init_client(&s,host,port) == 0)
382 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
386 BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
392 BIO_printf(bio_c_out,"turning on non blocking io\n");
393 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
395 ERR_print_errors(bio_err);
400 if (c_Pause & 0x01) con->debug=1;
401 sbio=BIO_new_socket(s,BIO_NOCLOSE);
407 test=BIO_new(BIO_f_nbio_test());
408 sbio=BIO_push(test,sbio);
414 BIO_set_callback(sbio,bio_dump_cb);
415 BIO_set_callback_arg(sbio,bio_c_out);
418 SSL_set_bio(con,sbio,sbio);
419 SSL_set_connect_state(con);
421 /* ok, lets connect */
422 width=SSL_get_fd(con)+1;
440 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
451 print_stuff(bio_c_out,con,full_log);
452 if (full_log > 0) full_log--;
457 BIO_printf(bio_c_out,"drop connection and then reconnect\n");
459 SSL_set_connect_state(con);
460 SHUTDOWN(SSL_get_fd(con));
466 ssl_pending = read_ssl && SSL_pending(con);
473 if (read_tty) FD_SET(fileno(stdin),&readfds);
474 if (write_tty) FD_SET(fileno(stdout),&writefds);
477 FD_SET(SSL_get_fd(con),&readfds);
479 FD_SET(SSL_get_fd(con),&writefds);
481 if(!tty_on || !write_tty) {
483 FD_SET(SSL_get_fd(con),&readfds);
485 FD_SET(SSL_get_fd(con),&writefds);
488 /* printf("mode tty(%d %d%d) ssl(%d%d)\n",
489 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
491 /* Note: under VMS with SOCKETSHR the second parameter
492 * is currently of type (int *) whereas under other
493 * systems it is (void *) if you don't have a cast it
494 * will choke the compiler: if you do have a cast then
495 * you can either go for (int *) or (void *).
498 /* Under Windows we make the assumption that we can
499 * always write to the tty: therefore if we need to
500 * write to the tty we just fall through. Otherwise
501 * we timeout the select every second and see if there
502 * are any keypresses. Note: this is a hack, in a proper
503 * Windows application we wouldn't do this.
509 i=select(width,(void *)&readfds,(void *)&writefds,
511 if(!i && (!_kbhit() || !read_tty) ) continue;
512 } else i=select(width,(void *)&readfds,(void *)&writefds,
516 i=select(width,(void *)&readfds,(void *)&writefds,
521 BIO_printf(bio_err,"bad select %d\n",
522 get_last_socket_error());
528 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
530 k=SSL_write(con,&(cbuf[cbuf_off]),
531 (unsigned int)cbuf_len);
532 switch (SSL_get_error(con,k))
537 if (k <= 0) goto end;
538 /* we have done a write(con,NULL,0); */
544 else /* if (cbuf_len > 0) */
550 case SSL_ERROR_WANT_WRITE:
551 BIO_printf(bio_c_out,"write W BLOCK\n");
555 case SSL_ERROR_WANT_READ:
556 BIO_printf(bio_c_out,"write R BLOCK\n");
561 case SSL_ERROR_WANT_X509_LOOKUP:
562 BIO_printf(bio_c_out,"write X BLOCK\n");
564 case SSL_ERROR_ZERO_RETURN:
567 BIO_printf(bio_c_out,"shutdown\n");
577 case SSL_ERROR_SYSCALL:
578 if ((k != 0) || (cbuf_len != 0))
580 BIO_printf(bio_err,"write:errno=%d\n",
581 get_last_socket_error());
591 ERR_print_errors(bio_err);
596 /* Assume Windows can always write */
597 else if (!ssl_pending && write_tty)
599 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
602 #ifdef CHARSET_EBCDIC
603 ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
605 i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len);
609 BIO_printf(bio_c_out,"DONE\n");
622 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
625 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
628 k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
630 /* Demo for pending and peek :-) */
631 k=SSL_read(con,sbuf,16);
633 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
637 switch (SSL_get_error(con,k))
648 case SSL_ERROR_WANT_WRITE:
649 BIO_printf(bio_c_out,"read W BLOCK\n");
653 case SSL_ERROR_WANT_READ:
654 BIO_printf(bio_c_out,"read R BLOCK\n");
657 if ((read_tty == 0) && (write_ssl == 0))
660 case SSL_ERROR_WANT_X509_LOOKUP:
661 BIO_printf(bio_c_out,"read X BLOCK\n");
663 case SSL_ERROR_SYSCALL:
664 BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error());
666 case SSL_ERROR_ZERO_RETURN:
667 BIO_printf(bio_c_out,"closed\n");
670 ERR_print_errors(bio_err);
679 else if (FD_ISSET(fileno(stdin),&readfds))
686 i=read(fileno(stdin),cbuf,BUFSIZZ/2);
688 /* both loops are skipped when i <= 0 */
689 for (j = 0; j < i; j++)
692 for (j = i-1; j >= 0; j--)
694 cbuf[j+lf_num] = cbuf[j];
699 cbuf[j+lf_num] = '\r';
705 i=read(fileno(stdin),cbuf,BUFSIZZ);
707 if ((!c_quiet) && ((i <= 0) || (cbuf[0] == 'Q')))
709 BIO_printf(bio_err,"DONE\n");
713 if ((!c_quiet) && (cbuf[0] == 'R'))
715 BIO_printf(bio_err,"RENEGOTIATING\n");
716 SSL_renegotiate(con);
723 #ifdef CHARSET_EBCDIC
724 ebcdic2ascii(cbuf, cbuf, i);
734 SHUTDOWN(SSL_get_fd(con));
737 if(prexit) print_stuff(bio_c_out,con,1);
738 if (con != NULL) SSL_free(con);
739 if (con2 != NULL) SSL_free(con2);
740 if (ctx != NULL) SSL_CTX_free(ctx);
741 if (cbuf != NULL) { memset(cbuf,0,BUFSIZZ); Free(cbuf); }
742 if (sbuf != NULL) { memset(sbuf,0,BUFSIZZ); Free(sbuf); }
743 if (bio_c_out != NULL)
752 static void print_stuff(BIO *bio, SSL *s, int full)
756 static char *space=" ";
759 STACK_OF(X509_NAME) *sk2;
768 sk=SSL_get_peer_cert_chain(s);
771 got_a_chain = 1; /* we don't have it for SSL2 (yet) */
773 BIO_printf(bio,"---\nCertificate chain\n");
774 for (i=0; i<sk_X509_num(sk); i++)
776 X509_NAME_oneline(X509_get_subject_name(
777 sk_X509_value(sk,i)),buf,BUFSIZ);
778 BIO_printf(bio,"%2d s:%s\n",i,buf);
779 X509_NAME_oneline(X509_get_issuer_name(
780 sk_X509_value(sk,i)),buf,BUFSIZ);
781 BIO_printf(bio," i:%s\n",buf);
783 PEM_write_bio_X509(bio,sk_X509_value(sk,i));
787 BIO_printf(bio,"---\n");
788 peer=SSL_get_peer_certificate(s);
791 BIO_printf(bio,"Server certificate\n");
792 if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
793 PEM_write_bio_X509(bio,peer);
794 X509_NAME_oneline(X509_get_subject_name(peer),
796 BIO_printf(bio,"subject=%s\n",buf);
797 X509_NAME_oneline(X509_get_issuer_name(peer),
799 BIO_printf(bio,"issuer=%s\n",buf);
802 BIO_printf(bio,"no peer certificate available\n");
804 sk2=SSL_get_client_CA_list(s);
805 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
807 BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
808 for (i=0; i<sk_X509_NAME_num(sk2); i++)
810 xn=sk_X509_NAME_value(sk2,i);
811 X509_NAME_oneline(xn,buf,sizeof(buf));
812 BIO_write(bio,buf,strlen(buf));
813 BIO_write(bio,"\n",1);
818 BIO_printf(bio,"---\nNo client certificate CA names sent\n");
820 p=SSL_get_shared_ciphers(s,buf,BUFSIZ);
823 /* This works only for SSL 2. In later protocol
824 * versions, the client does not know what other
825 * ciphers (in addition to the one to be used
826 * in the current connection) the server supports. */
828 BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
834 BIO_write(bio,space,15-j%25);
837 BIO_write(bio,((i%3)?" ":"\n"),1);
846 BIO_write(bio,"\n",1);
849 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
850 BIO_number_read(SSL_get_rbio(s)),
851 BIO_number_written(SSL_get_wbio(s)));
853 BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, "));
854 c=SSL_get_current_cipher(s);
855 BIO_printf(bio,"%s, Cipher is %s\n",
856 SSL_CIPHER_get_version(c),
857 SSL_CIPHER_get_name(c));
860 pktmp = X509_get_pubkey(peer);
861 BIO_printf(bio,"Server public key is %d bit\n",
862 EVP_PKEY_bits(pktmp));
863 EVP_PKEY_free(pktmp);
865 SSL_SESSION_print(bio,SSL_get_session(s));
866 BIO_printf(bio,"---\n");