113 lines
2.4 KiB
C
113 lines
2.4 KiB
C
/* NOCW */
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/* demos/bio/sconnect.c */
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/*-
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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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#ifdef WATT32
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dbug_init();
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sock_init();
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#endif
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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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i = BIO_write(out, &(p[off]), len);
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if (i <= 0) {
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if (BIO_should_retry(out)) {
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fprintf(stderr, "write DELAY\n");
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sleep(1);
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continue;
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} else {
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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)
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break;
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}
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for (;;) {
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i = BIO_read(out, buf, sizeof(buf));
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if (i == 0)
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break;
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if (i < 0) {
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if (BIO_should_retry(out)) {
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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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err:
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if (ERR_peek_error() == 0) { /* system call error */
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fprintf(stderr, "errno=%d ", errno);
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perror("error");
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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)
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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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