e2f06800bc
New ctrl sets current certificate based on certain criteria. Currently
two options: set the first valid certificate as current and set the
next valid certificate as current. Using these an application can
iterate over all certificates in an SSL_CTX or SSL structure.
(cherry picked from commit 0f78819c8c)
151 lines
3.2 KiB
C
151 lines
3.2 KiB
C
/* NOCW */
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/* demos/bio/server-arg.c */
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/* A minimal program to serve an SSL connection.
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* It uses blocking.
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* It use the SSL_CONF API with the command line.
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*
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* cc -I../../include server-arg.c -L../.. -lssl -lcrypto -ldl
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*/
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#include <stdio.h>
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#include <signal.h>
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#include <openssl/err.h>
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#include <openssl/ssl.h>
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int main(int argc, char *argv[])
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{
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char *port = "*:4433";
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BIO *ssl_bio,*tmp;
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SSL_CTX *ctx;
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SSL_CONF_CTX *cctx;
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char buf[512];
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BIO *in=NULL;
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int ret=1,i;
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char **args = argv + 1;
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int nargs = argc - 1;
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SSL_load_error_strings();
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/* Add ciphers and message digests */
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OpenSSL_add_ssl_algorithms();
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ctx=SSL_CTX_new(SSLv23_server_method());
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cctx = SSL_CONF_CTX_new();
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SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_SERVER);
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SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_CERTIFICATE);
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SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
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while(*args && **args == '-')
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{
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int rv;
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/* Parse standard arguments */
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rv = SSL_CONF_cmd_argv(cctx, &nargs, &args);
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if (rv == -3)
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{
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fprintf(stderr, "Missing argument for %s\n", *args);
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goto err;
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}
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if (rv < 0)
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{
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fprintf(stderr, "Error in command %s\n", *args);
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ERR_print_errors_fp(stderr);
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goto err;
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}
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/* If rv > 0 we processed something so proceed to next arg */
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if (rv > 0)
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continue;
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/* Otherwise application specific argument processing */
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if (!strcmp(*args, "-port"))
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{
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port = args[1];
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if (port == NULL)
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{
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fprintf(stderr, "Missing -port argument\n");
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goto err;
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}
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args += 2;
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nargs -= 2;
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continue;
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}
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else
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{
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fprintf(stderr, "Unknown argument %s\n", *args);
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goto err;
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}
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}
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if (!SSL_CONF_CTX_finish(cctx))
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{
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fprintf(stderr, "Finish error\n");
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ERR_print_errors_fp(stderr);
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goto err;
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}
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#if 0
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/* Demo of how to iterate over all certificates in an SSL_CTX
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* structure.
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*/
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{
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X509 *x;
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int rv;
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rv = SSL_CTX_set_current_cert(ctx, SSL_CERT_SET_FIRST);
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while (rv)
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{
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X509 *x = SSL_CTX_get0_certificate(ctx);
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X509_NAME_print_ex_fp(stdout, X509_get_subject_name(x), 0, XN_FLAG_ONELINE);
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printf("\n");
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rv = SSL_CTX_set_current_cert(ctx, SSL_CERT_SET_NEXT);
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}
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fflush(stdout);
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}
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#endif
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/* Setup server side SSL bio */
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ssl_bio=BIO_new_ssl(ctx,0);
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if ((in=BIO_new_accept(port)) == NULL) goto err;
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/* This means that when a new connection is accepted on 'in',
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* The ssl_bio will be 'duplicated' and have the new socket
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* BIO push into it. Basically it means the SSL BIO will be
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* automatically setup */
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BIO_set_accept_bios(in,ssl_bio);
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again:
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/* The first call will setup the accept socket, and the second
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* will get a socket. In this loop, the first actual accept
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* will occur in the BIO_read() function. */
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if (BIO_do_accept(in) <= 0) goto err;
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for (;;)
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{
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i=BIO_read(in,buf,512);
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if (i == 0)
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{
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/* If we have finished, remove the underlying
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* BIO stack so the next time we call any function
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* for this BIO, it will attempt to do an
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* accept */
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printf("Done\n");
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tmp=BIO_pop(in);
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BIO_free_all(tmp);
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goto again;
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}
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if (i < 0) goto err;
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fwrite(buf,1,i,stdout);
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fflush(stdout);
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}
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ret=0;
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err:
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if (ret)
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{
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ERR_print_errors_fp(stderr);
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}
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if (in != NULL) BIO_free(in);
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exit(ret);
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return(!ret);
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}
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