mirror of
https://github.com/openssl/openssl.git
synced 2024-12-03 05:41:46 +08:00
117 lines
2.0 KiB
C
117 lines
2.0 KiB
C
/* NOCW */
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/* demos/bio/sconnect.c */
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/* A minimal program to do SSL to a passed host and port.
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* It is actually using non-blocking IO but in a very simple manner
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* sconnect host:port - it does a 'GET / HTTP/1.0'
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*
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* cc -I../../include sconnect.c -L../.. -lssl -lcrypto
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <openssl/err.h>
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#include <openssl/ssl.h>
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extern int errno;
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int main(argc,argv)
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int argc;
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char *argv[];
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{
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char *host;
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BIO *out;
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char buf[1024*10],*p;
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SSL_CTX *ssl_ctx=NULL;
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SSL *ssl;
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BIO *ssl_bio;
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int i,len,off,ret=1;
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if (argc <= 1)
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host="localhost:4433";
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else
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host=argv[1];
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/* Lets get nice error messages */
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SSL_load_error_strings();
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/* Setup all the global SSL stuff */
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OpenSSL_add_ssl_algorithms();
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ssl_ctx=SSL_CTX_new(SSLv23_client_method());
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/* Lets make a SSL structure */
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ssl=SSL_new(ssl_ctx);
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SSL_set_connect_state(ssl);
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/* Use it inside an SSL BIO */
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ssl_bio=BIO_new(BIO_f_ssl());
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BIO_set_ssl(ssl_bio,ssl,BIO_CLOSE);
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/* Lets use a connect BIO under the SSL BIO */
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out=BIO_new(BIO_s_connect());
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BIO_set_conn_hostname(out,host);
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BIO_set_nbio(out,1);
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out=BIO_push(ssl_bio,out);
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p="GET / HTTP/1.0\r\n\r\n";
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len=strlen(p);
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off=0;
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for (;;)
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{
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i=BIO_write(out,&(p[off]),len);
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if (i <= 0)
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{
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if (BIO_should_retry(out))
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{
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fprintf(stderr,"write DELAY\n");
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sleep(1);
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continue;
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}
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else
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{
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goto err;
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}
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}
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off+=i;
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len-=i;
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if (len <= 0) break;
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}
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for (;;)
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{
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i=BIO_read(out,buf,sizeof(buf));
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if (i == 0) break;
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if (i < 0)
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{
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if (BIO_should_retry(out))
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{
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fprintf(stderr,"read DELAY\n");
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sleep(1);
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continue;
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}
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goto err;
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}
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fwrite(buf,1,i,stdout);
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}
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ret=1;
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if (0)
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{
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err:
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if (ERR_peek_error() == 0) /* system call error */
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{
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fprintf(stderr,"errno=%d ",errno);
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perror("error");
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}
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else
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ERR_print_errors_fp(stderr);
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}
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BIO_free_all(out);
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if (ssl_ctx != NULL) SSL_CTX_free(ssl_ctx);
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exit(!ret);
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return(ret);
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}
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