| /* NOCW */ |
| /* demos/bio/saccept.c */ |
| |
| /*- |
| * A minimal program to server an SSL connection. |
| * It uses blocking. |
| * saccept host:port |
| * host is the interface IP to use. If any interface, use *:port |
| * The default it *:4433 |
| * |
| * cc -I../../include saccept.c -L../.. -lssl -lcrypto |
| */ |
| |
| #include <stdio.h> |
| #include <signal.h> |
| #include <openssl/err.h> |
| #include <openssl/ssl.h> |
| |
| #define CERT_FILE "server.pem" |
| |
| BIO *in = NULL; |
| |
| void close_up() |
| { |
| if (in != NULL) |
| BIO_free(in); |
| } |
| |
| int main(argc, argv) |
| int argc; |
| char *argv[]; |
| { |
| char *port = NULL; |
| BIO *ssl_bio, *tmp; |
| SSL_CTX *ctx; |
| SSL *ssl; |
| char buf[512]; |
| int ret = 1, i; |
| |
| if (argc <= 1) |
| port = "*:4433"; |
| else |
| port = argv[1]; |
| |
| signal(SIGINT, close_up); |
| |
| SSL_load_error_strings(); |
| |
| #ifdef WATT32 |
| dbug_init(); |
| sock_init(); |
| #endif |
| |
| /* Add ciphers and message digests */ |
| OpenSSL_add_ssl_algorithms(); |
| |
| ctx = SSL_CTX_new(SSLv23_server_method()); |
| if (!SSL_CTX_use_certificate_file(ctx, CERT_FILE, SSL_FILETYPE_PEM)) |
| goto err; |
| if (!SSL_CTX_use_PrivateKey_file(ctx, CERT_FILE, SSL_FILETYPE_PEM)) |
| goto err; |
| if (!SSL_CTX_check_private_key(ctx)) |
| goto err; |
| |
| /* Setup server side SSL bio */ |
| ssl = SSL_new(ctx); |
| ssl_bio = BIO_new_ssl(ctx, 0); |
| |
| if ((in = BIO_new_accept(port)) == NULL) |
| goto err; |
| |
| /* |
| * This means that when a new connection is acceptede on 'in', The |
| * ssl_bio will be 'dupilcated' and have the new socket BIO push into it. |
| * Basically it means the SSL BIO will be automatically setup |
| */ |
| BIO_set_accept_bios(in, ssl_bio); |
| |
| again: |
| /* |
| * The first call will setup the accept socket, and the second will get a |
| * socket. In this loop, the first actual accept will occur in the |
| * BIO_read() function. |
| */ |
| |
| if (BIO_do_accept(in) <= 0) |
| goto err; |
| |
| for (;;) { |
| i = BIO_read(in, buf, 512); |
| if (i == 0) { |
| /* |
| * If we have finished, remove the underlying BIO stack so the |
| * next time we call any function for this BIO, it will attempt |
| * to do an accept |
| */ |
| printf("Done\n"); |
| tmp = BIO_pop(in); |
| BIO_free_all(tmp); |
| goto again; |
| } |
| if (i < 0) |
| goto err; |
| fwrite(buf, 1, i, stdout); |
| fflush(stdout); |
| } |
| |
| ret = 0; |
| err: |
| if (ret) { |
| ERR_print_errors_fp(stderr); |
| } |
| if (in != NULL) |
| BIO_free(in); |
| exit(ret); |
| return (!ret); |
| } |