saccept.c revision 109999 
1/* NOCW */
2/* demos/bio/saccept.c */
3
4/* A minimal program to server an SSL connection.
5 * It uses blocking.
6 * saccept host:port
7 * host is the interface IP to use.  If any interface, use *:port
8 * The default it *:4433
9 *
10 * cc -I../../include saccept.c -L../.. -lssl -lcrypto
11 */
12
13#include <stdio.h>
14#include <signal.h>
15#include <openssl/err.h>
16#include <openssl/ssl.h>
17
18#define CERT_FILE	"server.pem"
19
20BIO *in=NULL;
21
22void close_up()
23	{
24	if (in != NULL)
25		BIO_free(in);
26	}
27
28int main(argc,argv)
29int argc;
30char *argv[];
31	{
32	char *port=NULL;
33	BIO *ssl_bio,*tmp;
34	SSL_CTX *ctx;
35	SSL *ssl;
36	char buf[512];
37	int ret=1,i;
38
39        if (argc <= 1)
40		port="*:4433";
41	else
42		port=argv[1];
43
44	signal(SIGINT,close_up);
45
46	SSL_load_error_strings();
47
48#ifdef WATT32
49	dbug_init();
50	sock_init();
51#endif
52
53	/* Add ciphers and message digests */
54	OpenSSL_add_ssl_algorithms();
55
56	ctx=SSL_CTX_new(SSLv23_server_method());
57	if (!SSL_CTX_use_certificate_file(ctx,CERT_FILE,SSL_FILETYPE_PEM))
58		goto err;
59	if (!SSL_CTX_use_PrivateKey_file(ctx,CERT_FILE,SSL_FILETYPE_PEM))
60		goto err;
61	if (!SSL_CTX_check_private_key(ctx))
62		goto err;
63
64	/* Setup server side SSL bio */
65	ssl=SSL_new(ctx);
66	ssl_bio=BIO_new_ssl(ctx,0);
67
68	if ((in=BIO_new_accept(port)) == NULL) goto err;
69
70	/* This means that when a new connection is acceptede on 'in',
71	 * The ssl_bio will be 'dupilcated' and have the new socket
72	 * BIO push into it.  Basically it means the SSL BIO will be
73	 * automatically setup */
74	BIO_set_accept_bios(in,ssl_bio);
75
76again:
77	/* The first call will setup the accept socket, and the second
78	 * will get a socket.  In this loop, the first actual accept
79	 * will occur in the BIO_read() function. */
80
81	if (BIO_do_accept(in) <= 0) goto err;
82
83	for (;;)
84		{
85		i=BIO_read(in,buf,512);
86		if (i == 0)
87			{
88			/* If we have finished, remove the underlying
89			 * BIO stack so the next time we call any function
90			 * for this BIO, it will attempt to do an
91			 * accept */
92			printf("Done\n");
93			tmp=BIO_pop(in);
94			BIO_free_all(tmp);
95			goto again;
96			}
97		if (i < 0) goto err;
98		fwrite(buf,1,i,stdout);
99		fflush(stdout);
100		}
101
102	ret=0;
103err:
104	if (ret)
105		{
106		ERR_print_errors_fp(stderr);
107		}
108	if (in != NULL) BIO_free(in);
109	exit(ret);
110	return(!ret);
111	}
112
113