summaryrefslogtreecommitdiff
path: root/crypto/heimdal/lib/kafs/common.c
diff options
context:
space:
mode:
Diffstat (limited to 'crypto/heimdal/lib/kafs/common.c')
-rw-r--r--crypto/heimdal/lib/kafs/common.c484
1 files changed, 0 insertions, 484 deletions
diff --git a/crypto/heimdal/lib/kafs/common.c b/crypto/heimdal/lib/kafs/common.c
deleted file mode 100644
index 291dcac3c1c4..000000000000
--- a/crypto/heimdal/lib/kafs/common.c
+++ /dev/null
@@ -1,484 +0,0 @@
-/*
- * Copyright (c) 1997 - 2003 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 "kafs_locl.h"
-
-RCSID("$Id: common.c,v 1.26.2.1 2003/04/23 18:03:20 lha Exp $");
-
-#define AUTH_SUPERUSER "afs"
-
-/*
- * Here only ASCII characters are relevant.
- */
-
-#define IsAsciiLower(c) ('a' <= (c) && (c) <= 'z')
-
-#define ToAsciiUpper(c) ((c) - 'a' + 'A')
-
-static void (*kafs_verbose)(void *, const char *);
-static void *kafs_verbose_ctx;
-
-void
-_kafs_foldup(char *a, const char *b)
-{
- for (; *b; a++, b++)
- if (IsAsciiLower(*b))
- *a = ToAsciiUpper(*b);
- else
- *a = *b;
- *a = '\0';
-}
-
-void
-kafs_set_verbose(void (*f)(void *, const char *), void *ctx)
-{
- if (f) {
- kafs_verbose = f;
- kafs_verbose_ctx = ctx;
- }
-}
-
-int
-kafs_settoken_rxkad(const char *cell, struct ClearToken *ct,
- void *ticket, size_t ticket_len)
-{
- struct ViceIoctl parms;
- char buf[2048], *t;
- int32_t sizeof_x;
-
- t = buf;
- /*
- * length of secret token followed by secret token
- */
- sizeof_x = ticket_len;
- memcpy(t, &sizeof_x, sizeof(sizeof_x));
- t += sizeof(sizeof_x);
- memcpy(t, ticket, sizeof_x);
- t += sizeof_x;
- /*
- * length of clear token followed by clear token
- */
- sizeof_x = sizeof(*ct);
- memcpy(t, &sizeof_x, sizeof(sizeof_x));
- t += sizeof(sizeof_x);
- memcpy(t, ct, sizeof_x);
- t += sizeof_x;
-
- /*
- * do *not* mark as primary cell
- */
- sizeof_x = 0;
- memcpy(t, &sizeof_x, sizeof(sizeof_x));
- t += sizeof(sizeof_x);
- /*
- * follow with cell name
- */
- sizeof_x = strlen(cell) + 1;
- memcpy(t, cell, sizeof_x);
- t += sizeof_x;
-
- /*
- * Build argument block
- */
- parms.in = buf;
- parms.in_size = t - buf;
- parms.out = 0;
- parms.out_size = 0;
-
- return k_pioctl(0, VIOCSETTOK, &parms, 0);
-}
-
-void
-_kafs_fixup_viceid(struct ClearToken *ct, uid_t uid)
-{
-#define ODD(x) ((x) & 1)
- /* According to Transarc conventions ViceId is valid iff
- * (EndTimestamp - BeginTimestamp) is odd. By decrementing EndTime
- * the transformations:
- *
- * (issue_date, life) -> (StartTime, EndTime) -> (issue_date, life)
- * preserves the original values.
- */
- if (uid != 0) /* valid ViceId */
- {
- if (!ODD(ct->EndTimestamp - ct->BeginTimestamp))
- ct->EndTimestamp--;
- }
- else /* not valid ViceId */
- {
- if (ODD(ct->EndTimestamp - ct->BeginTimestamp))
- ct->EndTimestamp--;
- }
-}
-
-
-int
-_kafs_v4_to_kt(CREDENTIALS *c, uid_t uid, struct kafs_token *kt)
-{
- kt->ticket = NULL;
-
- if (c->ticket_st.length > MAX_KTXT_LEN)
- return EINVAL;
-
- kt->ticket = malloc(c->ticket_st.length);
- if (kt->ticket == NULL)
- return ENOMEM;
- kt->ticket_len = c->ticket_st.length;
- memcpy(kt->ticket, c->ticket_st.dat, kt->ticket_len);
-
- /*
- * Build a struct ClearToken
- */
- kt->ct.AuthHandle = c->kvno;
- memcpy (kt->ct.HandShakeKey, c->session, sizeof(c->session));
- kt->ct.ViceId = uid;
- kt->ct.BeginTimestamp = c->issue_date;
- kt->ct.EndTimestamp = krb_life_to_time(c->issue_date, c->lifetime);
-
- _kafs_fixup_viceid(&kt->ct, uid);
-
- return 0;
-}
-
-/* Try to get a db-server for an AFS cell from a AFSDB record */
-
-static int
-dns_find_cell(const char *cell, char *dbserver, size_t len)
-{
- struct dns_reply *r;
- int ok = -1;
- r = dns_lookup(cell, "afsdb");
- if(r){
- struct resource_record *rr = r->head;
- while(rr){
- if(rr->type == T_AFSDB && rr->u.afsdb->preference == 1){
- strlcpy(dbserver,
- rr->u.afsdb->domain,
- len);
- ok = 0;
- break;
- }
- rr = rr->next;
- }
- dns_free_data(r);
- }
- return ok;
-}
-
-
-/*
- * Try to find the cells we should try to klog to in "file".
- */
-static void
-find_cells(const char *file, char ***cells, int *index)
-{
- FILE *f;
- char cell[64];
- int i;
- int ind = *index;
-
- f = fopen(file, "r");
- if (f == NULL)
- return;
- while (fgets(cell, sizeof(cell), f)) {
- char *t;
- t = cell + strlen(cell);
- for (; t >= cell; t--)
- if (*t == '\n' || *t == '\t' || *t == ' ')
- *t = 0;
- if (cell[0] == '\0' || cell[0] == '#')
- continue;
- for(i = 0; i < ind; i++)
- if(strcmp((*cells)[i], cell) == 0)
- break;
- if(i == ind){
- char **tmp;
-
- tmp = realloc(*cells, (ind + 1) * sizeof(**cells));
- if (tmp == NULL)
- break;
- *cells = tmp;
- (*cells)[ind] = strdup(cell);
- if ((*cells)[ind] == NULL)
- break;
- ++ind;
- }
- }
- fclose(f);
- *index = ind;
-}
-
-/*
- * Get tokens for all cells[]
- */
-static int
-afslog_cells(kafs_data *data, char **cells, int max, uid_t uid,
- const char *homedir)
-{
- int ret = 0;
- int i;
- for (i = 0; i < max; i++) {
- int er = (*data->afslog_uid)(data, cells[i], 0, uid, homedir);
- if (er)
- ret = er;
- }
- return ret;
-}
-
-int
-_kafs_afslog_all_local_cells(kafs_data *data, uid_t uid, const char *homedir)
-{
- int ret;
- char **cells = NULL;
- int index = 0;
-
- if (homedir == NULL)
- homedir = getenv("HOME");
- if (homedir != NULL) {
- char home[MaxPathLen];
- snprintf(home, sizeof(home), "%s/.TheseCells", homedir);
- find_cells(home, &cells, &index);
- }
- find_cells(_PATH_THESECELLS, &cells, &index);
- find_cells(_PATH_THISCELL, &cells, &index);
- find_cells(_PATH_ARLA_THESECELLS, &cells, &index);
- find_cells(_PATH_ARLA_THISCELL, &cells, &index);
- find_cells(_PATH_OPENAFS_DEBIAN_THESECELLS, &cells, &index);
- find_cells(_PATH_OPENAFS_DEBIAN_THISCELL, &cells, &index);
- find_cells(_PATH_ARLA_DEBIAN_THESECELLS, &cells, &index);
- find_cells(_PATH_ARLA_DEBIAN_THISCELL, &cells, &index);
-
- ret = afslog_cells(data, cells, index, uid, homedir);
- while(index > 0)
- free(cells[--index]);
- free(cells);
- return ret;
-}
-
-
-static int
-file_find_cell(kafs_data *data, const char *cell, char **realm, int exact)
-{
- FILE *F;
- char buf[1024];
- char *p;
- int ret = -1;
-
- if ((F = fopen(_PATH_CELLSERVDB, "r"))
- || (F = fopen(_PATH_ARLA_CELLSERVDB, "r"))
- || (F = fopen(_PATH_OPENAFS_DEBIAN_CELLSERVDB, "r"))
- || (F = fopen(_PATH_ARLA_DEBIAN_CELLSERVDB, "r"))) {
- while (fgets(buf, sizeof(buf), F)) {
- int cmp;
-
- if (buf[0] != '>')
- continue; /* Not a cell name line, try next line */
- p = buf;
- strsep(&p, " \t\n#");
-
- if (exact)
- cmp = strcmp(buf + 1, cell);
- else
- cmp = strncmp(buf + 1, cell, strlen(cell));
-
- if (cmp == 0) {
- /*
- * We found the cell name we're looking for.
- * Read next line on the form ip-address '#' hostname
- */
- if (fgets(buf, sizeof(buf), F) == NULL)
- break; /* Read failed, give up */
- p = strchr(buf, '#');
- if (p == NULL)
- break; /* No '#', give up */
- p++;
- if (buf[strlen(buf) - 1] == '\n')
- buf[strlen(buf) - 1] = '\0';
- *realm = (*data->get_realm)(data, p);
- if (*realm && **realm != '\0')
- ret = 0;
- break; /* Won't try any more */
- }
- }
- fclose(F);
- }
- return ret;
-}
-
-/* Find the realm associated with cell. Do this by opening
- /usr/vice/etc/CellServDB and getting the realm-of-host for the
- first VL-server for the cell.
-
- This does not work when the VL-server is living in one realm, but
- the cell it is serving is living in another realm.
-
- Return 0 on success, -1 otherwise.
- */
-
-int
-_kafs_realm_of_cell(kafs_data *data, const char *cell, char **realm)
-{
- char buf[1024];
- int ret;
-
- ret = file_find_cell(data, cell, realm, 1);
- if (ret == 0)
- return ret;
- if (dns_find_cell(cell, buf, sizeof(buf)) == 0) {
- *realm = (*data->get_realm)(data, buf);
- if(*realm != NULL)
- return 0;
- }
- return file_find_cell(data, cell, realm, 0);
-}
-
-static int
-_kafs_try_get_cred(kafs_data *data, const char *user, const char *cell,
- const char *realm, uid_t uid, struct kafs_token *kt)
-{
- int ret;
-
- ret = (*data->get_cred)(data, user, cell, realm, uid, kt);
- if (kafs_verbose) {
- char *str;
- asprintf(&str, "%s tried afs%s%s@%s -> %d",
- data->name, cell[0] == '\0' ? "" : "/",
- cell, realm, ret);
- (*kafs_verbose)(kafs_verbose_ctx, str);
- free(str);
- }
-
- return ret;
-}
-
-
-int
-_kafs_get_cred(kafs_data *data,
- const char *cell,
- const char *realm_hint,
- const char *realm,
- uid_t uid,
- struct kafs_token *kt)
-{
- int ret = -1;
- char *vl_realm;
- char CELL[64];
-
- /* We're about to find the the realm that holds the key for afs in
- * the specified cell. The problem is that null-instance
- * afs-principals are common and that hitting the wrong realm might
- * yield the wrong afs key. The following assumptions were made.
- *
- * Any realm passed to us is preferred.
- *
- * If there is a realm with the same name as the cell, it is most
- * likely the correct realm to talk to.
- *
- * In most (maybe even all) cases the database servers of the cell
- * will live in the realm we are looking for.
- *
- * Try the local realm, but if the previous cases fail, this is
- * really a long shot.
- *
- */
-
- /* comments on the ordering of these tests */
-
- /* If the user passes a realm, she probably knows something we don't
- * know and we should try afs@realm_hint.
- */
-
- if (realm_hint) {
- ret = _kafs_try_get_cred(data, AUTH_SUPERUSER,
- cell, realm_hint, uid, kt);
- if (ret == 0) return 0;
- ret = _kafs_try_get_cred(data, AUTH_SUPERUSER,
- "", realm_hint, uid, kt);
- if (ret == 0) return 0;
- }
-
- _kafs_foldup(CELL, cell);
-
- /*
- * If cell == realm we don't need no cross-cell authentication.
- * Try afs@REALM.
- */
- if (strcmp(CELL, realm) == 0) {
- ret = _kafs_try_get_cred(data, AUTH_SUPERUSER,
- "", realm, uid, kt);
- if (ret == 0) return 0;
- /* Try afs.cell@REALM below. */
- }
-
- /*
- * If the AFS servers have a file /usr/afs/etc/krb.conf containing
- * REALM we still don't have to resort to cross-cell authentication.
- * Try afs.cell@REALM.
- */
- ret = _kafs_try_get_cred(data, AUTH_SUPERUSER,
- cell, realm, uid, kt);
- if (ret == 0) return 0;
-
- /*
- * We failed to get ``first class tickets'' for afs,
- * fall back to cross-cell authentication.
- * Try afs@CELL.
- * Try afs.cell@CELL.
- */
- ret = _kafs_try_get_cred(data, AUTH_SUPERUSER,
- "", CELL, uid, kt);
- if (ret == 0) return 0;
- ret = _kafs_try_get_cred(data, AUTH_SUPERUSER,
- cell, CELL, uid, kt);
- if (ret == 0) return 0;
-
- /*
- * Perhaps the cell doesn't correspond to any realm?
- * Use realm of first volume location DB server.
- * Try afs.cell@VL_REALM.
- * Try afs@VL_REALM???
- */
- if (_kafs_realm_of_cell(data, cell, &vl_realm) == 0
- && strcmp(vl_realm, realm) != 0
- && strcmp(vl_realm, CELL) != 0) {
- ret = _kafs_try_get_cred(data, AUTH_SUPERUSER,
- cell, vl_realm, uid, kt);
- if (ret)
- ret = _kafs_try_get_cred(data, AUTH_SUPERUSER,
- "", vl_realm, uid, kt);
- free(vl_realm);
- if (ret == 0) return 0;
- }
-
- return ret;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-04 12:31:59 +0000