diff options
Diffstat (limited to 'apps/s_client.c')
-rw-r--r-- | apps/s_client.c | 68 |
1 files changed, 66 insertions, 2 deletions
diff --git a/apps/s_client.c b/apps/s_client.c index fc0174f2c2..94f2a94137 100644 --- a/apps/s_client.c +++ b/apps/s_client.c @@ -175,6 +175,7 @@ typedef unsigned int u_int; #undef BUFSIZZ #define BUFSIZZ 1024*8 +#define S_CLIENT_IRC_READ_TIMEOUT 8 extern int verify_depth; extern int verify_error; @@ -516,7 +517,7 @@ OPTIONS s_client_options[] = { {"tls1_1", OPT_TLS1_1, '-', "Just use TLSv1.1"}, {"tls1", OPT_TLS1, '-', "Just use TLSv1"}, {"starttls", OPT_STARTTLS, 's', - "Use the STARTTLS command before starting TLS"}, + "Use the appropriate STARTTLS command before starting TLS"}, {"xmpphost", OPT_XMPPHOST, 's', "Host to use with \"-starttls xmpp[-server]\""}, {"rand", OPT_RAND, 's', @@ -614,7 +615,8 @@ typedef enum PROTOCOL_choice { PROTO_TELNET, PROTO_XMPP, PROTO_XMPP_SERVER, - PROTO_CONNECT + PROTO_CONNECT, + PROTO_IRC } PROTOCOL_CHOICE; static OPT_PAIR services[] = { @@ -625,6 +627,7 @@ static OPT_PAIR services[] = { {"xmpp", PROTO_XMPP}, {"xmpp-server", PROTO_XMPP_SERVER}, {"telnet", PROTO_TELNET}, + {"irc", PROTO_IRC}, {NULL} }; @@ -1644,6 +1647,67 @@ int s_client_main(int argc, char **argv) } } break; + case PROTO_IRC: + { + int numeric; + BIO *fbio = BIO_new(BIO_f_buffer()); + + BIO_push(fbio, sbio); + BIO_printf(fbio, "STARTTLS\r\n"); + (void)BIO_flush(fbio); + width = SSL_get_fd(con) + 1; + + do { + numeric = 0; + + FD_ZERO(&readfds); + openssl_fdset(SSL_get_fd(con), &readfds); + timeout.tv_sec = S_CLIENT_IRC_READ_TIMEOUT; + timeout.tv_usec = 0; + /* + * If the IRCd doesn't respond within + * S_CLIENT_IRC_READ_TIMEOUT seconds, assume + * it doesn't support STARTTLS. Many IRCds + * will not give _any_ sort of response to a + * STARTTLS command when it's not supported. + */ + if (!BIO_get_buffer_num_lines(fbio) + && !BIO_pending(fbio) + && !BIO_pending(sbio) + && select(width, (void *)&readfds, NULL, NULL, + &timeout) < 1) { + BIO_printf(bio_err, + "Timeout waiting for response (%d seconds).\n", + S_CLIENT_IRC_READ_TIMEOUT); + break; + } + + mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ); + if (mbuf_len < 1 || sscanf(mbuf, "%*s %d", &numeric) != 1) + break; + /* :example.net 451 STARTTLS :You have not registered */ + /* :example.net 421 STARTTLS :Unknown command */ + if ((numeric == 451 || numeric == 421) + && strstr(mbuf, "STARTTLS") != NULL) { + BIO_printf(bio_err, "STARTTLS not supported: %s", mbuf); + break; + } + if (numeric == 691) { + BIO_printf(bio_err, "STARTTLS negotiation failed: "); + ERR_print_errors(bio_err); + break; + } + } while (numeric != 670); + + (void)BIO_flush(fbio); + BIO_pop(fbio); + BIO_free(fbio); + if (numeric != 670) { + BIO_printf(bio_err, "Server does not support STARTTLS.\n"); + ret = 1; + goto shut; + } + } } for (;;) { |