4 * Copyright (c) 2000 The Regents of the University of Michigan.
7 * Copyright (c) 2002 Bruce Fields <bfields@UMICH.EDU>
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
23 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
24 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
25 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
29 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
30 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
31 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
32 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 #include <sys/param.h>
51 #include <lnet/nidstr.h>
61 #include <lustre/lustre_idl.h>
63 #define SVCGSSD_CONTEXT_CHANNEL "/proc/net/rpc/auth.sptlrpc.context/channel"
64 #define SVCGSSD_INIT_CHANNEL "/proc/net/rpc/auth.sptlrpc.init/channel"
66 #define TOKEN_BUF_SIZE 8192
78 struct svc_nego_data {
83 char nm_name[LUSTRE_NODEMAP_NAME_LENGTH + 1];
84 gss_buffer_desc in_tok;
85 gss_buffer_desc out_tok;
86 gss_buffer_desc in_handle;
87 gss_buffer_desc out_handle;
94 gss_buffer_desc ctx_token;
98 do_svc_downcall(gss_buffer_desc *out_handle, struct svc_cred *cred,
99 gss_OID mechoid, gss_buffer_desc *context_token)
102 const char *mechname;
105 printerr(2, "doing downcall\n");
106 mechname = gss_OID_mech_name(mechoid);
107 if (mechname == NULL)
109 f = fopen(SVCGSSD_CONTEXT_CHANNEL, "w");
111 printerr(0, "WARNING: unable to open downcall channel "
113 SVCGSSD_CONTEXT_CHANNEL, strerror(errno));
116 qword_printhex(f, out_handle->value, out_handle->length);
117 /* XXX are types OK for the rest of this? */
118 qword_printint(f, 3600); /* an hour should be sufficient */
119 qword_printint(f, cred->cr_remote);
120 qword_printint(f, cred->cr_usr_root);
121 qword_printint(f, cred->cr_usr_mds);
122 qword_printint(f, cred->cr_usr_oss);
123 qword_printint(f, cred->cr_mapped_uid);
124 qword_printint(f, cred->cr_uid);
125 qword_printint(f, cred->cr_gid);
126 qword_print(f, mechname);
127 qword_printhex(f, context_token->value, context_token->length);
132 printerr(0, "WARNING: downcall failed\n");
136 struct gss_verifier {
138 gss_buffer_desc body;
141 #define RPCSEC_GSS_SEQ_WIN 5
144 send_response(FILE *f, gss_buffer_desc *in_handle, gss_buffer_desc *in_token,
145 u_int32_t maj_stat, u_int32_t min_stat,
146 gss_buffer_desc *out_handle, gss_buffer_desc *out_token)
148 char buf[2 * TOKEN_BUF_SIZE];
150 int blen = sizeof(buf);
154 printerr(2, "sending reply\n");
155 qword_addhex(&bp, &blen, in_handle->value, in_handle->length);
156 qword_addhex(&bp, &blen, in_token->value, in_token->length);
157 qword_addint(&bp, &blen, 3600); /* an hour should be sufficient */
158 qword_adduint(&bp, &blen, maj_stat);
159 qword_adduint(&bp, &blen, min_stat);
160 qword_addhex(&bp, &blen, out_handle->value, out_handle->length);
161 qword_addhex(&bp, &blen, out_token->value, out_token->length);
162 qword_addeol(&bp, &blen);
164 printerr(0, "WARNING: send_response: message too long\n");
167 g = open(SVCGSSD_INIT_CHANNEL, O_WRONLY);
169 printerr(0, "WARNING: open %s failed: %s\n",
170 SVCGSSD_INIT_CHANNEL, strerror(errno));
174 printerr(3, "writing message: %s", buf);
175 if (write(g, buf, bp - buf) == -1) {
176 printerr(0, "WARNING: failed to write message\n");
184 #define rpc_auth_ok 0
185 #define rpc_autherr_badcred 1
186 #define rpc_autherr_rejectedcred 2
187 #define rpc_autherr_badverf 3
188 #define rpc_autherr_rejectedverf 4
189 #define rpc_autherr_tooweak 5
190 #define rpcsec_gsserr_credproblem 13
191 #define rpcsec_gsserr_ctxproblem 14
194 get_ids(gss_name_t client_name, gss_OID mech, struct svc_cred *cred,
195 lnet_nid_t nid, uint32_t lustre_svc)
197 u_int32_t maj_stat, min_stat;
198 gss_buffer_desc name;
199 char *sname, *host, *realm;
200 const int namebuf_size = 512;
201 char namebuf[namebuf_size];
203 gss_OID name_type = GSS_C_NO_OID;
207 cred->cr_usr_root = cred->cr_usr_mds = cred->cr_usr_oss = 0;
208 cred->cr_uid = cred->cr_mapped_uid = cred->cr_gid = -1;
210 maj_stat = gss_display_name(&min_stat, client_name, &name, &name_type);
211 if (maj_stat != GSS_S_COMPLETE) {
212 pgsserr("get_ids: gss_display_name",
213 maj_stat, min_stat, mech);
216 if (name.length >= 0xffff || /* be certain name.length+1 doesn't overflow */
217 !(sname = calloc(name.length + 1, 1))) {
218 printerr(0, "WARNING: get_ids: error allocating %zu bytes "
219 "for sname\n", name.length + 1);
220 gss_release_buffer(&min_stat, &name);
223 memcpy(sname, name.value, name.length);
224 sname[name.length] = '\0';
225 gss_release_buffer(&min_stat, &name);
227 if (lustre_svc == LUSTRE_GSS_SVC_MDS)
228 lookup_mapping(sname, nid, &cred->cr_mapped_uid);
230 cred->cr_mapped_uid = -1;
232 realm = strchr(sname, '@');
236 printerr(0, "ERROR: %s has no realm name\n", sname);
240 host = strchr(sname, '/');
244 if (strcmp(sname, GSSD_SERVICE_MGS) == 0) {
245 printerr(0, "forbid %s as a user name\n", sname);
249 /* 1. check host part */
251 if (lnet_nid2hostname(nid, namebuf, namebuf_size)) {
252 printerr(0, "ERROR: failed to resolve hostname for "
253 "%s/%s@%s from %016llx\n",
254 sname, host, realm, nid);
258 if (strcasecmp(host, namebuf)) {
259 printerr(0, "ERROR: %s/%s@%s claimed hostname doesn't "
260 "match %s, nid %016llx\n", sname, host, realm,
265 if (!strcmp(sname, GSSD_SERVICE_MDS) ||
266 !strcmp(sname, GSSD_SERVICE_OSS)) {
267 printerr(0, "ERROR: %s@%s from %016llx doesn't "
268 "bind with hostname\n", sname, realm, nid);
273 /* 2. check realm and user */
274 switch (lustre_svc) {
275 case LUSTRE_GSS_SVC_MDS:
276 if (strcasecmp(mds_local_realm, realm)) {
279 /* only allow mapped user from remote realm */
280 if (cred->cr_mapped_uid == -1) {
281 printerr(0, "ERROR: %s%s%s@%s from %016llx "
282 "is remote but without mapping\n",
283 sname, host ? "/" : "",
284 host ? host : "", realm, nid);
288 if (!strcmp(sname, LUSTRE_ROOT_NAME)) {
290 cred->cr_usr_root = 1;
291 } else if (!strcmp(sname, GSSD_SERVICE_MDS)) {
293 cred->cr_usr_mds = 1;
294 } else if (!strcmp(sname, GSSD_SERVICE_OSS)) {
296 cred->cr_usr_oss = 1;
298 pw = getpwnam(sname);
300 cred->cr_uid = pw->pw_uid;
301 printerr(2, "%s resolve to uid %u\n",
302 sname, cred->cr_uid);
303 } else if (cred->cr_mapped_uid != -1) {
304 printerr(2, "user %s from %016llx is "
305 "mapped to %u\n", sname, nid,
306 cred->cr_mapped_uid);
308 printerr(0, "ERROR: invalid user, "
309 "%s/%s@%s from %016llx\n",
310 sname, host, realm, nid);
318 case LUSTRE_GSS_SVC_MGS:
319 if (!strcmp(sname, GSSD_SERVICE_OSS)) {
321 cred->cr_usr_oss = 1;
324 case LUSTRE_GSS_SVC_OSS:
325 if (!strcmp(sname, LUSTRE_ROOT_NAME)) {
327 cred->cr_usr_root = 1;
328 } else if (!strcmp(sname, GSSD_SERVICE_MDS)) {
330 cred->cr_usr_mds = 1;
332 if (cred->cr_uid == -1) {
333 printerr(0, "ERROR: svc %d doesn't accept user %s "
334 "from %016llx\n", lustre_svc, sname, nid);
345 printerr(1, "%s: authenticated %s%s%s@%s from %016llx\n",
346 lustre_svc_name[lustre_svc], sname,
347 host ? "/" : "", host ? host : "", realm, nid);
352 typedef struct gss_union_ctx_id_t {
354 gss_ctx_id_t internal_ctx_id;
355 } gss_union_ctx_id_desc, *gss_union_ctx_id_t;
357 int handle_sk(struct svc_nego_data *snd)
359 #ifdef HAVE_OPENSSL_SSK
360 struct sk_cred *skc = NULL;
361 struct svc_cred cred;
362 gss_buffer_desc bufs[SK_INIT_BUFFERS];
363 gss_buffer_desc remote_pub_key = GSS_C_EMPTY_BUFFER;
365 uint32_t rc = GSS_S_DEFECTIVE_TOKEN;
370 printerr(3, "Handling sk request\n");
371 memset(bufs, 0, sizeof(gss_buffer_desc) * SK_INIT_BUFFERS);
373 /* See lgss_sk_using_cred() for client side token formation.
374 * Decoding initiator buffers */
375 i = sk_decode_netstring(bufs, SK_INIT_BUFFERS, &snd->in_tok);
376 if (i < SK_INIT_BUFFERS) {
377 printerr(0, "Invalid netstring token received from peer\n");
378 goto cleanup_buffers;
381 /* Allowing for a larger length first buffer in the future */
382 if (bufs[SK_INIT_VERSION].length < sizeof(version)) {
383 printerr(0, "Invalid version received (wrong size)\n");
384 goto cleanup_buffers;
386 memcpy(&version, bufs[SK_INIT_VERSION].value, sizeof(version));
387 version = be32toh(version);
388 if (version != SK_MSG_VERSION) {
389 printerr(0, "Invalid version received: %d\n", version);
390 goto cleanup_buffers;
395 /* target must be a null terminated string */
396 i = bufs[SK_INIT_TARGET].length - 1;
397 target = bufs[SK_INIT_TARGET].value;
398 if (i >= 0 && target[i] != '\0') {
399 printerr(0, "Invalid target from netstring\n");
400 goto cleanup_buffers;
403 if (bufs[SK_INIT_FLAGS].length != sizeof(flags)) {
404 printerr(0, "Invalid flags from netstring\n");
405 goto cleanup_buffers;
407 memcpy(&flags, bufs[SK_INIT_FLAGS].value, sizeof(flags));
409 skc = sk_create_cred(target, snd->nm_name, be32toh(flags));
411 printerr(0, "Failed to create sk credentials\n");
412 goto cleanup_buffers;
415 /* Verify that the peer has used a prime size greater or equal to
416 * the size specified in the key file which may contain only zero
417 * fill but the size specifies the mimimum supported size on
419 if (skc->sc_flags & LGSS_SVC_PRIV &&
420 bufs[SK_INIT_P].length < skc->sc_p.length) {
421 printerr(0, "Peer DHKE prime does not meet the size required "
422 "by keyfile: %zd bits\n", skc->sc_p.length * 8);
423 goto cleanup_buffers;
426 /* Throw out the p from the server and use the wire data */
427 free(skc->sc_p.value);
428 skc->sc_p.value = NULL;
429 skc->sc_p.length = 0;
431 /* Take control of all the allocated buffers from decoding */
432 if (bufs[SK_INIT_RANDOM].length !=
433 sizeof(skc->sc_kctx.skc_peer_random)) {
434 printerr(0, "Invalid size for client random\n");
435 goto cleanup_buffers;
438 memcpy(&skc->sc_kctx.skc_peer_random, bufs[SK_INIT_RANDOM].value,
439 sizeof(skc->sc_kctx.skc_peer_random));
440 skc->sc_p = bufs[SK_INIT_P];
441 remote_pub_key = bufs[SK_INIT_PUB_KEY];
442 skc->sc_nodemap_hash = bufs[SK_INIT_NODEMAP];
443 skc->sc_hmac = bufs[SK_INIT_HMAC];
445 /* Verify HMAC from peer. Ideally this would happen before anything
446 * else but we don't have enough information to lookup key without the
447 * token (fsname and cluster_hash) so it's done after. */
448 rc = sk_verify_hmac(skc, bufs, SK_INIT_BUFFERS - 1, EVP_sha256(),
450 if (rc != GSS_S_COMPLETE) {
451 printerr(0, "HMAC verification error: 0x%x from peer %s\n",
452 rc, libcfs_nid2str((lnet_nid_t)snd->nid));
453 goto cleanup_partial;
456 /* Check that the cluster hash matches the hash of nodemap name */
457 rc = sk_verify_hash(snd->nm_name, EVP_sha256(), &skc->sc_nodemap_hash);
458 if (rc != GSS_S_COMPLETE) {
459 printerr(0, "Cluster hash failed validation: 0x%x\n", rc);
460 goto cleanup_partial;
463 rc = sk_gen_params(skc);
464 if (rc != GSS_S_COMPLETE) {
465 printerr(0, "Failed to generate DH params for responder\n");
466 goto cleanup_partial;
468 if (sk_compute_dh_key(skc, &remote_pub_key)) {
469 printerr(0, "Failed to compute session key from DH params\n");
470 goto cleanup_partial;
473 /* Cleanup init buffers we have copied or don't need anymore */
474 free(bufs[SK_INIT_VERSION].value);
475 free(bufs[SK_INIT_RANDOM].value);
476 free(bufs[SK_INIT_TARGET].value);
477 free(bufs[SK_INIT_FLAGS].value);
479 /* Server reply contains the servers public key, random, and HMAC */
480 version = htobe32(SK_MSG_VERSION);
481 bufs[SK_RESP_VERSION].value = &version;
482 bufs[SK_RESP_VERSION].length = sizeof(version);
483 bufs[SK_RESP_RANDOM].value = &skc->sc_kctx.skc_host_random;
484 bufs[SK_RESP_RANDOM].length = sizeof(skc->sc_kctx.skc_host_random);
485 bufs[SK_RESP_PUB_KEY] = skc->sc_pub_key;
486 if (sk_sign_bufs(&skc->sc_kctx.skc_shared_key, bufs,
487 SK_RESP_BUFFERS - 1, EVP_sha256(),
489 printerr(0, "Failed to sign parameters\n");
492 bufs[SK_RESP_HMAC] = skc->sc_hmac;
493 if (sk_encode_netstring(bufs, SK_RESP_BUFFERS, &snd->out_tok)) {
494 printerr(0, "Failed to encode netstring for token\n");
497 printerr(2, "Created netstring of %zd bytes\n", snd->out_tok.length);
499 if (sk_session_kdf(skc, snd->nid, &snd->in_tok, &snd->out_tok)) {
500 printerr(0, "Failed to calulate derviced session key\n");
503 if (sk_compute_keys(skc)) {
504 printerr(0, "Failed to compute HMAC and encryption keys\n");
507 if (sk_serialize_kctx(skc, &snd->ctx_token)) {
508 printerr(0, "Failed to serialize context for kernel\n");
512 snd->out_handle.length = sizeof(snd->handle_seq);
513 memcpy(snd->out_handle.value, &snd->handle_seq,
514 sizeof(snd->handle_seq));
515 snd->maj_stat = GSS_S_COMPLETE;
517 /* fix credentials */
518 memset(&cred, 0, sizeof(cred));
519 cred.cr_mapped_uid = -1;
521 if (skc->sc_flags & LGSS_ROOT_CRED_ROOT)
522 cred.cr_usr_root = 1;
523 if (skc->sc_flags & LGSS_ROOT_CRED_MDT)
525 if (skc->sc_flags & LGSS_ROOT_CRED_OST)
528 do_svc_downcall(&snd->out_handle, &cred, snd->mech, &snd->ctx_token);
530 /* cleanup ctx_token, out_tok is cleaned up in handle_channel_req */
531 free(remote_pub_key.value);
532 free(snd->ctx_token.value);
533 snd->ctx_token.length = 0;
535 printerr(3, "sk returning success\n");
539 for (i = 0; i < SK_INIT_BUFFERS; i++)
546 free(bufs[SK_INIT_VERSION].value);
547 free(bufs[SK_INIT_RANDOM].value);
548 free(bufs[SK_INIT_TARGET].value);
549 free(bufs[SK_INIT_FLAGS].value);
550 free(remote_pub_key.value);
557 if (snd->ctx_token.value) {
558 free(snd->ctx_token.value);
559 snd->ctx_token.value = 0;
560 snd->ctx_token.length = 0;
562 free(remote_pub_key.value);
564 printerr(3, "sk returning failure\n");
565 #else /* !HAVE_OPENSSL_SSK */
566 printerr(0, "ERROR: shared key subflavour is not enabled\n");
567 #endif /* HAVE_OPENSSL_SSK */
571 int handle_null(struct svc_nego_data *snd)
573 struct svc_cred cred;
577 /* null just uses the same token as the return token and for
578 * for sending to the kernel. It is a single uint64_t. */
579 if (snd->in_tok.length != sizeof(uint64_t)) {
580 snd->maj_stat = GSS_S_DEFECTIVE_TOKEN;
581 printerr(0, "Invalid token size (%zd) received\n",
585 snd->out_tok.length = snd->in_tok.length;
586 snd->out_tok.value = malloc(snd->out_tok.length);
587 if (!snd->out_tok.value) {
588 snd->maj_stat = GSS_S_FAILURE;
589 printerr(0, "Failed to allocate out_tok\n");
593 snd->ctx_token.length = snd->in_tok.length;
594 snd->ctx_token.value = malloc(snd->ctx_token.length);
595 if (!snd->ctx_token.value) {
596 snd->maj_stat = GSS_S_FAILURE;
597 printerr(0, "Failed to allocate ctx_token\n");
601 snd->out_handle.length = sizeof(snd->handle_seq);
602 memcpy(snd->out_handle.value, &snd->handle_seq,
603 sizeof(snd->handle_seq));
604 snd->maj_stat = GSS_S_COMPLETE;
606 memcpy(&tmp, snd->in_tok.value, sizeof(tmp));
608 flags = (uint32_t)(tmp & 0x00000000ffffffff);
609 memset(&cred, 0, sizeof(cred));
610 cred.cr_mapped_uid = -1;
612 if (flags & LGSS_ROOT_CRED_ROOT)
613 cred.cr_usr_root = 1;
614 if (flags & LGSS_ROOT_CRED_MDT)
616 if (flags & LGSS_ROOT_CRED_OST)
619 do_svc_downcall(&snd->out_handle, &cred, snd->mech, &snd->ctx_token);
621 /* cleanup ctx_token, out_tok is cleaned up in handle_channel_req */
622 free(snd->ctx_token.value);
623 snd->ctx_token.length = 0;
628 static int handle_krb(struct svc_nego_data *snd)
631 gss_name_t client_name;
632 gss_buffer_desc ignore_out_tok = {.value = NULL};
633 gss_OID mech = GSS_C_NO_OID;
634 gss_cred_id_t svc_cred;
635 u_int32_t ignore_min_stat;
636 struct svc_cred cred;
638 svc_cred = gssd_select_svc_cred(snd->lustre_svc);
640 printerr(0, "no service credential for svc %u\n",
645 snd->maj_stat = gss_accept_sec_context(&snd->min_stat, &snd->ctx,
646 svc_cred, &snd->in_tok,
647 GSS_C_NO_CHANNEL_BINDINGS,
649 &snd->out_tok, &ret_flags, NULL,
652 if (snd->maj_stat == GSS_S_CONTINUE_NEEDED) {
653 printerr(1, "gss_accept_sec_context GSS_S_CONTINUE_NEEDED\n");
655 /* Save the context handle for future calls */
656 snd->out_handle.length = sizeof(snd->ctx);
657 memcpy(snd->out_handle.value, &snd->ctx, sizeof(snd->ctx));
659 } else if (snd->maj_stat != GSS_S_COMPLETE) {
660 printerr(0, "WARNING: gss_accept_sec_context failed\n");
661 pgsserr("handle_krb: gss_accept_sec_context",
662 snd->maj_stat, snd->min_stat, mech);
666 if (get_ids(client_name, mech, &cred, snd->nid, snd->lustre_svc)) {
667 /* get_ids() prints error msg */
668 snd->maj_stat = GSS_S_BAD_NAME; /* XXX ? */
669 gss_release_name(&ignore_min_stat, &client_name);
672 gss_release_name(&ignore_min_stat, &client_name);
674 /* Context complete. Pass handle_seq in out_handle to use
675 * for context lookup in the kernel. */
676 snd->out_handle.length = sizeof(snd->handle_seq);
677 memcpy(snd->out_handle.value, &snd->handle_seq,
678 sizeof(snd->handle_seq));
680 /* kernel needs ctx to calculate verifier on null response, so
681 * must give it context before doing null call: */
682 if (serialize_context_for_kernel(snd->ctx, &snd->ctx_token, mech)) {
683 printerr(0, "WARNING: handle_krb: "
684 "serialize_context_for_kernel failed\n");
685 snd->maj_stat = GSS_S_FAILURE;
688 /* We no longer need the gss context */
689 gss_delete_sec_context(&ignore_min_stat, &snd->ctx, &ignore_out_tok);
690 do_svc_downcall(&snd->out_handle, &cred, mech, &snd->ctx_token);
695 if (snd->ctx != GSS_C_NO_CONTEXT)
696 gss_delete_sec_context(&ignore_min_stat, &snd->ctx,
703 * return -1 only if we detect error during reading from upcall channel,
704 * all other cases return 0.
706 int handle_channel_request(FILE *f)
708 char in_tok_buf[TOKEN_BUF_SIZE];
709 char in_handle_buf[15];
710 char out_handle_buf[15];
711 gss_buffer_desc ctx_token = {.value = NULL},
712 null_token = {.value = NULL};
713 uint32_t lustre_mech;
719 u_int32_t ignore_min_stat;
720 struct svc_nego_data snd = {
721 .in_tok.value = in_tok_buf,
722 .in_handle.value = in_handle_buf,
723 .out_handle.value = out_handle_buf,
724 .maj_stat = GSS_S_FAILURE,
725 .ctx = GSS_C_NO_CONTEXT,
728 printerr(2, "handling request\n");
729 if (readline(fileno(f), &lbuf, &lbuflen) != 1) {
730 printerr(0, "WARNING: failed reading request\n");
736 /* see rsi_request() for the format of data being input here */
737 qword_get(&cp, (char *)&snd.lustre_svc, sizeof(snd.lustre_svc));
739 /* lustre_svc is the svc and gss subflavor */
740 lustre_mech = (snd.lustre_svc & LUSTRE_GSS_MECH_MASK) >>
741 LUSTRE_GSS_MECH_SHIFT;
742 snd.lustre_svc = snd.lustre_svc & LUSTRE_GSS_SVC_MASK;
743 switch (lustre_mech) {
746 printerr(1, "WARNING: Request for kerberos but service "
747 "support not enabled\n");
754 printerr(1, "WARNING: Request for gssnull but service "
755 "support not enabled\n");
761 #ifdef HAVE_OPENSSL_SSK
763 printerr(1, "WARNING: Request for sk but service "
764 "support not enabled\n");
769 printerr(1, "ERROR: Request for sk but service "
770 "support not enabled\n");
774 printerr(0, "WARNING: invalid mechanism recevied: %d\n",
780 qword_get(&cp, (char *)&snd.nid, sizeof(snd.nid));
781 qword_get(&cp, (char *)&snd.handle_seq, sizeof(snd.handle_seq));
782 qword_get(&cp, snd.nm_name, sizeof(snd.nm_name));
783 printerr(2, "handling req: svc %u, nid %016llx, idx %"PRIx64" nodemap "
784 "%s\n", snd.lustre_svc, snd.nid, snd.handle_seq, snd.nm_name);
786 get_len = qword_get(&cp, snd.in_handle.value, sizeof(in_handle_buf));
788 printerr(0, "WARNING: failed parsing request\n");
791 snd.in_handle.length = (size_t)get_len;
793 printerr(3, "in_handle:\n");
794 print_hexl(3, snd.in_handle.value, snd.in_handle.length);
796 get_len = qword_get(&cp, snd.in_tok.value, sizeof(in_tok_buf));
798 printerr(0, "WARNING: failed parsing request\n");
801 snd.in_tok.length = (size_t)get_len;
803 printerr(3, "in_tok:\n");
804 print_hexl(3, snd.in_tok.value, snd.in_tok.length);
806 if (snd.in_handle.length != 0) { /* CONTINUE_INIT case */
807 if (snd.in_handle.length != sizeof(snd.ctx)) {
808 printerr(0, "WARNING: input handle has unexpected "
809 "length %zu\n", snd.in_handle.length);
812 /* in_handle is the context id stored in the out_handle
813 * for the GSS_S_CONTINUE_NEEDED case below. */
814 memcpy(&snd.ctx, snd.in_handle.value, snd.in_handle.length);
817 if (lustre_mech == LGSS_MECH_KRB5)
818 rc = handle_krb(&snd);
819 else if (lustre_mech == LGSS_MECH_SK)
820 rc = handle_sk(&snd);
821 else if (lustre_mech == LGSS_MECH_NULL)
822 rc = handle_null(&snd);
824 printerr(0, "WARNING: Received or request for"
825 "subflavor that is not enabled: %d\n", lustre_mech);
828 /* Failures send a null token */
830 send_response(f, &snd.in_handle, &snd.in_tok, snd.maj_stat,
831 snd.min_stat, &snd.out_handle, &snd.out_tok);
833 send_response(f, &snd.in_handle, &snd.in_tok, snd.maj_stat,
834 snd.min_stat, &null_token, &null_token);
836 /* cleanup buffers */
837 if (snd.ctx_token.value != NULL)
838 free(ctx_token.value);
839 if (snd.out_tok.value != NULL)
840 gss_release_buffer(&ignore_min_stat, &snd.out_tok);
842 /* For junk wire data just ignore */