Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 257 insertions, 0 deletions

diff --git a/third_party/heimdal/lib/krb5/sendauth.c b/third_party/heimdal/lib/krb5/sendauth.c
new file mode 100644
index 0000000..a2c8aed
--- /dev/null
+++ b/third_party/heimdal/lib/krb5/sendauth.c
@@ -0,0 +1,257 @@
+/*
+ * Copyright (c) 1997 - 2006 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "krb5_locl.h"
+
+/*
+ * The format seems to be:
+ * client -> server
+ *
+ * 4 bytes - length
+ * KRB5_SENDAUTH_V1.0 (including zero)
+ * 4 bytes - length
+ * protocol string (with terminating zero)
+ *
+ * server -> client
+ * 1 byte - (0 = OK, else some kind of error)
+ *
+ * client -> server
+ * 4 bytes - length
+ * AP-REQ
+ *
+ * server -> client
+ * 4 bytes - length (0 = OK, else length of error)
+ * (error)
+ *
+ * if(mutual) {
+ * server -> client
+ * 4 bytes - length
+ * AP-REP
+ * }
+ */
+
+/**
+ * Perform the client side of the sendauth protocol.
+ *
+ * @param context        Kerberos 5 context.
+ * @param auth_context   Authentication context of the peer.
+ * @param p_fd           Socket associated to the connection.
+ * @param appl_version   Server-specific string.
+ * @param client         Client principal. If NULL, use the credentials in \a ccache.
+ * @param server         Server principal.
+ * @param ap_req_options Options for the AP_REQ message. See the AP_OPTS_* defines in krb5.h.
+ * @param in_data        FIXME
+ * @param in_creds       FIXME
+ * @param ccache         Credentials cache. If NULL, use the default credentials cache.
+ * @param ret_error      If not NULL, will be set to the error reported by server, if any.
+ *                       Must be deallocated with krb5_free_error_contents().
+ * @param rep_result     If not NULL, will be set to the EncApRepPart of the AP_REP message.
+ *                       Must be deallocated with krb5_free_ap_rep_enc_part().
+ * @param out_creds      FIXME If not NULL, will be set to FIXME. Must be deallocated with
+ *                       krb5_free_creds().
+ *
+ * @return 0 to indicate success. Otherwise a Kerberos error code is
+ *         returned, see krb5_get_error_message().
+ */
+KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
+krb5_sendauth(krb5_context context,
+	      krb5_auth_context *auth_context,
+	      krb5_pointer p_fd,
+	      const char *appl_version,
+	      krb5_principal client,
+	      krb5_principal server,
+	      krb5_flags ap_req_options,
+	      krb5_data *in_data,
+	      krb5_creds *in_creds,
+	      krb5_ccache ccache,
+	      krb5_error **ret_error,
+	      krb5_ap_rep_enc_part **rep_result,
+	      krb5_creds **out_creds)
+{
+    krb5_error_code ret;
+    uint32_t len, net_len;
+    const char *version = KRB5_SENDAUTH_VERSION;
+    u_char repl;
+    krb5_data ap_req, error_data;
+    krb5_creds this_cred;
+    krb5_principal this_client = NULL;
+    krb5_creds *creds;
+    ssize_t sret;
+    krb5_boolean my_ccache = FALSE;
+
+    memset(&this_cred, 0, sizeof(this_cred));
+    len = strlen(version) + 1;
+    net_len = htonl(len);
+    if (krb5_net_write (context, p_fd, &net_len, 4) != 4
+	|| krb5_net_write (context, p_fd, version, len) != len) {
+	ret = errno;
+	krb5_set_error_message (context, ret, "write: %s", strerror(ret));
+	return ret;
+    }
+
+    len = strlen(appl_version) + 1;
+    net_len = htonl(len);
+    if (krb5_net_write (context, p_fd, &net_len, 4) != 4
+	|| krb5_net_write (context, p_fd, appl_version, len) != len) {
+	ret = errno;
+	krb5_set_error_message (context, ret, "write: %s", strerror(ret));
+	return ret;
+    }
+
+    sret = krb5_net_read (context, p_fd, &repl, sizeof(repl));
+    if (sret < 0) {
+	ret = errno;
+	krb5_set_error_message (context, ret, "read: %s", strerror(ret));
+	return ret;
+    } else if (sret != sizeof(repl)) {
+	krb5_clear_error_message (context);
+	return KRB5_SENDAUTH_BADRESPONSE;
+    }
+
+    if (repl != 0) {
+	krb5_clear_error_message (context);
+	return KRB5_SENDAUTH_REJECTED;
+    }
+
+    if (in_creds == NULL) {
+	if (ccache == NULL) {
+	    ret = krb5_cc_default (context, &ccache);
+	    if (ret)
+		return ret;
+	    my_ccache = TRUE;
+	}
+
+	if (client == NULL) {
+	    ret = krb5_cc_get_principal (context, ccache, &this_client);
+	    if (ret) {
+		if(my_ccache)
+		    krb5_cc_close(context, ccache);
+		return ret;
+	    }
+	    client = this_client;
+	}
+	this_cred.client = client;
+	this_cred.server = server;
+	this_cred.times.endtime = 0;
+	this_cred.ticket.length = 0;
+	in_creds = &this_cred;
+    }
+    if (in_creds->ticket.length == 0) {
+	ret = krb5_get_credentials (context, 0, ccache, in_creds, &creds);
+	if (ret) {
+	    if(my_ccache)
+		krb5_cc_close(context, ccache);
+	    return ret;
+	}
+    } else {
+	creds = in_creds;
+    }
+    if(my_ccache)
+	krb5_cc_close(context, ccache);
+    ret = krb5_mk_req_extended (context,
+				auth_context,
+				ap_req_options,
+				in_data,
+				creds,
+				&ap_req);
+
+    if (ret)
+	return ret;
+
+    ret = krb5_write_message (context,
+			      p_fd,
+			      &ap_req);
+    if (ret)
+	return ret;
+
+    krb5_data_free (&ap_req);
+
+    ret = krb5_read_message (context, p_fd, &error_data);
+    if (ret)
+	return ret;
+
+    if (error_data.length != 0) {
+	KRB_ERROR error;
+
+	ret = krb5_rd_error (context, &error_data, &error);
+	krb5_data_free (&error_data);
+	if (ret == 0) {
+	    ret = krb5_error_from_rd_error(context, &error, NULL);
+	    if (ret_error != NULL) {
+		*ret_error = malloc (sizeof(krb5_error));
+		if (*ret_error == NULL) {
+		    krb5_free_error_contents (context, &error);
+		} else {
+		    **ret_error = error;
+		}
+	    } else {
+		krb5_free_error_contents (context, &error);
+	    }
+	    return ret;
+	} else {
+	    krb5_clear_error_message(context);
+	    return ret;
+	}
+    } else
+	krb5_data_free (&error_data);
+
+    if (ap_req_options & AP_OPTS_MUTUAL_REQUIRED) {
+	krb5_data ap_rep;
+	krb5_ap_rep_enc_part *ignore = NULL;
+
+	krb5_data_zero (&ap_rep);
+	ret = krb5_read_message (context,
+				 p_fd,
+				 &ap_rep);
+	if (ret)
+	    return ret;
+
+	ret = krb5_rd_rep (context, *auth_context, &ap_rep,
+			   rep_result ? rep_result : &ignore);
+	krb5_data_free (&ap_rep);
+	if (ret)
+	    return ret;
+	if (rep_result == NULL)
+	    krb5_free_ap_rep_enc_part (context, ignore);
+    }
+
+    if (out_creds)
+        ret = krb5_copy_creds(context, creds, out_creds);
+
+    this_cred.server = NULL;
+    if (creds == &this_cred)
+        krb5_free_cred_contents(context, creds);
+    else if (creds)
+        krb5_free_creds(context, creds);
+    return ret;
+}