*
*/
-#ifdef HAVE_CONFIG_H
#include <config.h>
-#endif
#ifdef HAVE_OPENSSL
#include <stdlib.h>
#include "portability.h"
+
#include "sslutils.h"
-#include "pcap/pcap.h"
-char ssl_keyfile[PATH_MAX]; //!< file containing the private key in PEM format
-char ssl_certfile[PATH_MAX]; //!< file containing the server's certificate in PEM format
-char ssl_rootfile[PATH_MAX]; //!< file containing the list of CAs trusted by the client
+static const char *ssl_keyfile = ""; //!< file containing the private key in PEM format
+static const char *ssl_certfile = ""; //!< file containing the server's certificate in PEM format
+static const char *ssl_rootfile = ""; //!< file containing the list of CAs trusted by the client
// TODO: a way to set ssl_rootfile from the command line, or an envvar?
// TODO: lock?
static SSL_CTX *ctx;
-static int ssl_init_once(int is_server, int enable_compression, char *errbuf, size_t errbuflen)
+void ssl_set_certfile(const char *certfile)
+{
+ ssl_certfile = certfile;
+}
+
+void ssl_set_keyfile(const char *keyfile)
+{
+ ssl_keyfile = keyfile;
+}
+
+int ssl_init_once(int is_server, int enable_compression, char *errbuf, size_t errbuflen)
{
static int inited = 0;
if (inited) return 0;
ctx = SSL_CTX_new(meth);
if (! ctx)
{
- pcap_snprintf(errbuf, errbuflen, "Cannot get a new SSL context: %s", ERR_error_string(ERR_get_error(), NULL));
+ snprintf(errbuf, errbuflen, "Cannot get a new SSL context: %s", ERR_error_string(ERR_get_error(), NULL));
goto die;
}
char const *certfile = ssl_certfile[0] ? ssl_certfile : "cert.pem";
if (1 != SSL_CTX_use_certificate_file(ctx, certfile, SSL_FILETYPE_PEM))
{
- pcap_snprintf(errbuf, errbuflen, "Cannot read certificate file %s: %s", certfile, ERR_error_string(ERR_get_error(), NULL));
+ snprintf(errbuf, errbuflen, "Cannot read certificate file %s: %s", certfile, ERR_error_string(ERR_get_error(), NULL));
goto die;
}
char const *keyfile = ssl_keyfile[0] ? ssl_keyfile : "key.pem";
if (1 != SSL_CTX_use_PrivateKey_file(ctx, keyfile, SSL_FILETYPE_PEM))
{
- pcap_snprintf(errbuf, errbuflen, "Cannot read private key file %s: %s", keyfile, ERR_error_string(ERR_get_error(), NULL));
+ snprintf(errbuf, errbuflen, "Cannot read private key file %s: %s", keyfile, ERR_error_string(ERR_get_error(), NULL));
goto die;
}
}
{
if (! SSL_CTX_load_verify_locations(ctx, ssl_rootfile, 0))
{
- pcap_snprintf(errbuf, errbuflen, "Cannot read CA list from %s", ssl_rootfile);
+ snprintf(errbuf, errbuflen, "Cannot read CA list from %s", ssl_rootfile);
goto die;
}
}
#if 0
if (! RAND_load_file(RANDOM, 1024*1024))
{
- pcap_snprintf(errbuf, errbuflen, "Cannot init random");
+ snprintf(errbuf, errbuflen, "Cannot init random");
goto die;
}
return -1;
}
-void init_ssl_or_die(int is_server, int enable_compression)
-{
- char errbuf[PCAP_ERRBUF_SIZE];
-
- if (ssl_init_once(is_server, enable_compression, errbuf, sizeof errbuf) < 0)
- {
- fprintf(stderr, "%s\n", errbuf);
- exit(3);
- }
-}
-
-SSL *ssl_promotion_rw(int is_server, SOCKET in, SOCKET out, char *errbuf, size_t errbuflen)
+SSL *ssl_promotion(int is_server, PCAP_SOCKET s, char *errbuf, size_t errbuflen)
{
if (ssl_init_once(is_server, 1, errbuf, errbuflen) < 0) {
return NULL;
}
SSL *ssl = SSL_new(ctx); // TODO: also a DTLS context
- SSL_set_rfd(ssl, in);
- SSL_set_wfd(ssl, out);
+ SSL_set_fd(ssl, (int)s);
if (is_server) {
if (SSL_accept(ssl) <= 0) {
- pcap_snprintf(errbuf, errbuflen, "SSL_accept(): %s",
+ snprintf(errbuf, errbuflen, "SSL_accept(): %s",
ERR_error_string(ERR_get_error(), NULL));
return NULL;
}
} else {
if (SSL_connect(ssl) <= 0) {
- pcap_snprintf(errbuf, errbuflen, "SSL_connect(): %s",
+ snprintf(errbuf, errbuflen, "SSL_connect(): %s",
ERR_error_string(ERR_get_error(), NULL));
return NULL;
}
return ssl;
}
-SSL *ssl_promotion(int is_server, SOCKET s, char *errbuf, size_t errbuflen)
+// Finish using an SSL handle; shut down the connection and free the
+// handle.
+void ssl_finish(SSL *ssl)
{
- return ssl_promotion_rw(is_server, s, s, errbuf, errbuflen);
+ //
+ // We won't be using this again, so we can just send the
+ // shutdown alert and free up the handle, and have our
+ // caller close the socket.
+ //
+ // XXX - presumably, if the connection is shut down on
+ // our side, either our peer won't have a problem sending
+ // their shutdown alert or will not treat such a problem
+ // as an error. If this causes errors to be reported,
+ // fix that as appropriate.
+ //
+ SSL_shutdown(ssl);
+ SSL_free(ssl);
}
// Same return value as sock_send:
if (errno == ECONNRESET || errno == EPIPE) return -2;
#endif
}
- pcap_snprintf(errbuf, errbuflen, "SSL_write(): %s",
+ snprintf(errbuf, errbuflen, "SSL_write(): %s",
ERR_error_string(ERR_get_error(), NULL));
return -1;
}
else
{
// Should not happen
- pcap_snprintf(errbuf, errbuflen, "SSL_read(): %s",
+ snprintf(errbuf, errbuflen, "SSL_read(): %s",
ERR_error_string(ERR_get_error(), NULL));
return -2;
}
projects / libpcap / blobdiff