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dd7d42a1fa
During recent testing related to the IETF NFSv4 Bakeathon, it was discovered that Kerberized NFSv4.1/4.2 mounts to pNFS servers (sec=krb5[ip],pnfs mount options) was broken. The FreeBSD client was using the "service principal" for the MDS to try and establish a rpcsec_gss credential for a DS, which is incorrect. (A "service principal" looks like "nfs@<fqdn-of-server>" and the <fqdn-of-server> for the DS is not the same as the MDS for most pNFS servers.) To fix this, the rpcsec_gss code needs to be able to do a reverse DNS lookup of the DS's IP address. A new kgssapi upcall to the gssd(8) daemon is added by this patch to do the reverse DNS along with a new rpcsec_gss function to generate the "service principal". A separate patch to the gssd(8) will be committed, so that this patch will fix the problem. Without the gssd(8) patch, the new upcall fails and current/incorrect behaviour remains. This bug only affects the rare case of a Kerberized (sec=krb5[ip],pnfs) mount using pNFS. This patch changes the internal KAPI between the kgssapi and nfscl modules, but since I did a version bump a few days ago, I will not do one this time. MFC after: 1 month
279 lines
6.3 KiB
Plaintext
279 lines
6.3 KiB
Plaintext
/*-
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* Copyright (c) 2008 Isilon Inc http://www.isilon.com/
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* Authors: Doug Rabson <dfr@rabson.org>
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* Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifdef RPC_HDR
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%#ifdef _KERNEL
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%#include <kgssapi/gssapi.h>
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%#else
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%#include <gssapi/gssapi.h>
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%#include <netdb.h>
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%#endif
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%extern bool_t xdr_gss_buffer_desc(XDR *xdrs, gss_buffer_desc *buf);
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%extern bool_t xdr_gss_OID_desc(XDR *xdrs, gss_OID_desc *oid);
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%extern bool_t xdr_gss_OID(XDR *xdrs, gss_OID *oidp);
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%extern bool_t xdr_gss_OID_set_desc(XDR *xdrs, gss_OID_set_desc *set);
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%extern bool_t xdr_gss_OID_set(XDR *xdrs, gss_OID_set *setp);
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%extern bool_t xdr_gss_channel_bindings_t(XDR *xdrs, gss_channel_bindings_t *chp);
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#endif
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typedef uint64_t gssd_ctx_id_t;
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typedef uint64_t gssd_cred_id_t;
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typedef uint64_t gssd_name_t;
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struct init_sec_context_res {
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uint32_t major_status;
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uint32_t minor_status;
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gssd_ctx_id_t ctx;
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gss_OID actual_mech_type;
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gss_buffer_desc output_token;
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uint32_t ret_flags;
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uint32_t time_rec;
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};
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struct init_sec_context_args {
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uint32_t uid;
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gssd_cred_id_t cred;
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gssd_ctx_id_t ctx;
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gssd_name_t name;
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gss_OID mech_type;
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uint32_t req_flags;
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uint32_t time_req;
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gss_channel_bindings_t input_chan_bindings;
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gss_buffer_desc input_token;
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};
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struct accept_sec_context_res {
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uint32_t major_status;
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uint32_t minor_status;
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gssd_ctx_id_t ctx;
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gssd_name_t src_name;
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gss_OID mech_type;
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gss_buffer_desc output_token;
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uint32_t ret_flags;
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uint32_t time_rec;
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gssd_cred_id_t delegated_cred_handle;
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};
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struct accept_sec_context_args {
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gssd_ctx_id_t ctx;
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gssd_cred_id_t cred;
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gss_buffer_desc input_token;
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gss_channel_bindings_t input_chan_bindings;
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};
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struct delete_sec_context_res {
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uint32_t major_status;
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uint32_t minor_status;
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gss_buffer_desc output_token;
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};
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struct delete_sec_context_args {
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gssd_ctx_id_t ctx;
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};
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enum sec_context_format {
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KGSS_HEIMDAL_0_6,
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KGSS_HEIMDAL_1_1
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};
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struct export_sec_context_res {
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uint32_t major_status;
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uint32_t minor_status;
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enum sec_context_format format;
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gss_buffer_desc interprocess_token;
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};
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struct export_sec_context_args {
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gssd_ctx_id_t ctx;
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};
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struct import_name_res {
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uint32_t major_status;
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uint32_t minor_status;
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gssd_name_t output_name;
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};
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struct import_name_args {
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gss_buffer_desc input_name_buffer;
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gss_OID input_name_type;
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};
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struct canonicalize_name_res {
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uint32_t major_status;
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uint32_t minor_status;
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gssd_name_t output_name;
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};
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struct canonicalize_name_args {
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gssd_name_t input_name;
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gss_OID mech_type;
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};
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struct export_name_res {
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uint32_t major_status;
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uint32_t minor_status;
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gss_buffer_desc exported_name;
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};
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struct export_name_args {
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gssd_name_t input_name;
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};
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struct release_name_res {
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uint32_t major_status;
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uint32_t minor_status;
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};
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struct release_name_args {
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gssd_name_t input_name;
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};
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struct pname_to_uid_res {
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uint32_t major_status;
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uint32_t minor_status;
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uint32_t uid;
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uint32_t gid;
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uint32_t gidlist<>;
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};
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struct pname_to_uid_args {
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gssd_name_t pname;
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gss_OID mech;
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};
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struct acquire_cred_res {
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uint32_t major_status;
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uint32_t minor_status;
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gssd_cred_id_t output_cred;
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gss_OID_set actual_mechs;
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uint32_t time_rec;
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};
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struct acquire_cred_args {
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uint32_t uid;
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gssd_name_t desired_name;
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uint32_t time_req;
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gss_OID_set desired_mechs;
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int cred_usage;
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};
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struct set_cred_option_res {
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uint32_t major_status;
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uint32_t minor_status;
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};
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struct set_cred_option_args {
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gssd_cred_id_t cred;
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gss_OID option_name;
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gss_buffer_desc option_value;
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};
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struct release_cred_res {
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uint32_t major_status;
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uint32_t minor_status;
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};
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struct release_cred_args {
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gssd_cred_id_t cred;
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};
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struct display_status_res {
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uint32_t major_status;
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uint32_t minor_status;
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uint32_t message_context;
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gss_buffer_desc status_string;
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};
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struct display_status_args {
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uint32_t status_value;
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int status_type;
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gss_OID mech_type;
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uint32_t message_context;
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};
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struct ip_to_dns_res {
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uint32_t major_status;
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uint32_t minor_status;
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char dns_name<NI_MAXHOST>;
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};
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struct ip_to_dns_args {
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char ip_addr<NI_MAXHOST>;
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};
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program GSSD {
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version GSSDVERS {
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void GSSD_NULL(void) = 0;
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init_sec_context_res
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GSSD_INIT_SEC_CONTEXT(init_sec_context_args) = 1;
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accept_sec_context_res
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GSSD_ACCEPT_SEC_CONTEXT(accept_sec_context_args) = 2;
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delete_sec_context_res
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GSSD_DELETE_SEC_CONTEXT(delete_sec_context_args) = 3;
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export_sec_context_res
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GSSD_EXPORT_SEC_CONTEXT(export_sec_context_args) = 4;
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import_name_res
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GSSD_IMPORT_NAME(import_name_args) = 5;
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canonicalize_name_res
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GSSD_CANONICALIZE_NAME(canonicalize_name_args) = 6;
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export_name_res
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GSSD_EXPORT_NAME(export_name_args) = 7;
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release_name_res
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GSSD_RELEASE_NAME(release_name_args) = 8;
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pname_to_uid_res
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GSSD_PNAME_TO_UID(pname_to_uid_args) = 9;
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acquire_cred_res
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GSSD_ACQUIRE_CRED(acquire_cred_args) = 10;
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set_cred_option_res
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GSSD_SET_CRED_OPTION(set_cred_option_args) = 11;
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release_cred_res
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GSSD_RELEASE_CRED(release_cred_args) = 12;
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display_status_res
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GSSD_DISPLAY_STATUS(display_status_args) = 13;
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ip_to_dns_res
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GSSD_IP_TO_DNS(ip_to_dns_args) = 14;
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} = 1;
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} = 0x40677373;
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