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/* NOCW */
/* demos/bio/sconnect.c */
/* A minimal program to do SSL to a passed host and port.
* It is actually using non-blocking IO but in a very simple manner
* sconnect host:port - it does a 'GET / HTTP/1.0'
*
* cc -I../../include sconnect.c -L../.. -lssl -lcrypto
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <openssl/err.h>
#include <openssl/ssl.h>
extern int errno;
int main(argc,argv)
int argc;
char *argv[];
{
char *host;
BIO *out;
char buf[1024*10],*p;
SSL_CTX *ssl_ctx=NULL;
SSL *ssl;
BIO *ssl_bio;
int i,len,off,ret=1;
if (argc <= 1)
host="localhost:4433";
else
host=argv[1];
/* Lets get nice error messages */
SSL_load_error_strings();
/* Setup all the global SSL stuff */
SSLeay_add_ssl_algorithms();
ssl_ctx=SSL_CTX_new(SSLv23_client_method());
/* Lets make a SSL structure */
ssl=SSL_new(ssl_ctx);
SSL_set_connect_state(ssl);
/* Use it inside an SSL BIO */
ssl_bio=BIO_new(BIO_f_ssl());
BIO_set_ssl(ssl_bio,ssl,BIO_CLOSE);
/* Lets use a connect BIO under the SSL BIO */
out=BIO_new(BIO_s_connect());
BIO_set_conn_hostname(out,host);
BIO_set_nbio(out,1);
out=BIO_push(ssl_bio,out);
p="GET / HTTP/1.0\r\n\r\n";
len=strlen(p);
off=0;
for (;;)
{
i=BIO_write(out,&(p[off]),len);
if (i <= 0)
{
if (BIO_should_retry(out))
{
fprintf(stderr,"write DELAY\n");
sleep(1);
continue;
}
else
{
goto err;
}
}
off+=i;
len-=i;
if (len <= 0) break;
}
for (;;)
{
i=BIO_read(out,buf,sizeof(buf));
if (i == 0) break;
if (i < 0)
{
if (BIO_should_retry(out))
{
fprintf(stderr,"read DELAY\n");
sleep(1);
continue;
}
goto err;
}
fwrite(buf,1,i,stdout);
}
ret=1;
if (0)
{
err:
if (ERR_peek_error() == 0) /* system call error */
{
fprintf(stderr,"errno=%d ",errno);
perror("error");
}
else
ERR_print_errors_fp(stderr);
}
BIO_free_all(out);
if (ssl_ctx != NULL) SSL_CTX_free(ssl_ctx);
exit(!ret);
return(ret);
}
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