#define DIRSTRING "/" /* String form of above */
#define VOLMARKER ':' /* Character separating cellname from mntpt */
#define VOLMARKERSTRING ":" /* String form of above */
+#define AKIMP_LIFETIME_MAX 720 /* Max token lifetime for akimpersonate in hours (30 days) */
typedef struct {
char cell[BUFSIZ];
#define TRYAGAIN(x) (x == AKLOG_TRYAGAIN || \
x == KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN || \
+ x == KRB5_KT_NOTFOUND || \
x == KRB5KRB_ERR_GENERIC)
#if defined(HAVE_KRB5_PRINC_SIZE) || defined(krb5_princ_size)
#error "Must have either krb5_princ_size or krb5_principal_get_comp_string"
#endif
+#if defined(HAVE_ENCODE_KRB5_TICKET)
+extern krb5_error_code encode_krb5_ticket (const krb5_ticket *rep,
+ krb5_data **code);
+#endif
+
#if !defined(HAVE_KRB5_ENCRYPT_TKT_PART) && defined(HAVE_ENCODE_KRB5_ENC_TKT_PART) && defined(HAVE_KRB5_C_ENCRYPT)
extern krb5_error_code encode_krb5_enc_tkt_part (const krb5_enc_tkt_part *rep,
krb5_data **code);
static linked_list zsublist; /* List of zephyr subscriptions */
static linked_list hostlist; /* List of host addresses */
static linked_list authedcells; /* List of cells already logged to */
+static int akimp_lifetime = 36000; /* Lifetime for akimpersonate tokens. Default 10 hrs */
+static int akimplifetime_present = 0; /* Whether a lifetime was specified for akimpersonate */
/* A com_error bodge. The idea here is that this routine lets us lookup
* things in the system com_err, if the AFS one just tells us the error
krb5_svc_get_msg(code,&str);
#elif defined(HAVE_KRB5_GET_ERROR_MESSAGE)
krb5_context context;
- krb5_init_context(&context);
- str = krb5_get_error_message(context, code);
- krb5_free_context(context);
+ if (krb5_init_context(&context) == 0) {
+ str = krb5_get_error_message(context, code);
+ krb5_free_context(context);
+ }
#else
; /* IRIX apparently has neither: use the string we have */
#endif
exit(AKLOG_AFS);
}
- if (afsconf_GetLocalCell(configdir, *local_cell, MAXCELLCHARS)) {
- fprintf(stderr, "%s: can't determine local cell.\n", progname);
- exit(AKLOG_AFS);
+ if (cell != NULL && cell[0] == '\0') {
+ /* Use the local cell */
+ cell = NULL;
}
- if ((cell == NULL) || (cell[0] == 0))
- cell = *local_cell;
-
/* XXX - This function modifies 'cell' by passing it through lcstring */
if (afsconf_GetCellInfo(configdir, cell, NULL, cellconfig)) {
- fprintf(stderr, "%s: Can't get information about cell %s.\n",
- progname, cell);
+ if (cell != NULL) {
+ fprintf(stderr, "%s: Can't get information about cell %s.\n",
+ progname, cell);
+ } else {
+ fprintf(stderr, "%s: Can't get information about the local cell.\n",
+ progname);
+ }
status = AKLOG_AFS;
+ } else if (afsconf_GetLocalCell(configdir, *local_cell, MAXCELLCHARS)) {
+ fprintf(stderr, "%s: can't determine local cell.\n", progname);
+ exit(AKLOG_AFS);
}
afsconf_Close(configdir);
static int
rxkad_get_token(krb5_context context, struct afsconf_cell *cell, char *realm,
struct ktc_tokenUnion **token, char **authuser, int *foreign) {
- krb5_creds *v5cred;
+ krb5_creds *v5cred = NULL;
char *realmUsed = NULL;
char *username = NULL;
int status;
status = rxkad_get_ticket(context, realm, cell, &v5cred, &realmUsed);
if (status)
- return status;
+ goto out;
if (do524)
status = rxkad_get_converted_token(context, v5cred, token, &username);
free(realmUsed);
if (username)
free(username);
+ if (v5cred)
+ krb5_free_creds(context, v5cred);
return status;
}
* We don't care about the return value, but need to collect it
* to avoid compiler warnings.
*/
- if (write(2,"",0) < 0) /* dummy write */
- ; /* don't care */
+ if (write(2,"",0) < 0) {
+ /* dummy write, don't care */
+ }
#endif
token_setPag(token, afssetpag);
status = ktc_SetTokenEx(token);
"[-d] [[-cell | -c] cell [-k krb_realm]] ",
"[[-p | -path] pathname]\n",
" [-zsubs] [-hosts] [-noauth] [-noprdb] [-force] [-setpag] \n"
- " [-linked]"
+ " [-linked] [-insecure_des]"
#ifndef HAVE_NO_KRB5_524
" [-524]"
#endif
#ifndef HAVE_NO_KRB5_524
fprintf(stderr, " -524 means use the 524 converter instead of V5 directly\n");
#endif
+ fprintf(stderr, " -insecure_des enables insecure single-DES for krb5.\n");
fprintf(stderr, " No commandline arguments means ");
fprintf(stderr, "authenticate to the local cell.\n");
fprintf(stderr, "\n");
int status = AKLOG_SUCCESS;
int i;
int somethingswrong = FALSE;
+ int insecure_des = 0;
cellinfo_t cellinfo;
initialize_PT_error_table();
afs_set_com_err_hook(redirect_errors);
- /*
- * Enable DES enctypes, which are currently still required for AFS.
- * krb5_allow_weak_crypto is MIT Kerberos 1.8. krb5_enctype_enable is
- * Heimdal.
- */
-#if defined(HAVE_KRB5_ENCTYPE_ENABLE)
- i = krb5_enctype_valid(context, ETYPE_DES_CBC_CRC);
- if (i)
- krb5_enctype_enable(context, ETYPE_DES_CBC_CRC);
-#elif defined(HAVE_KRB5_ALLOW_WEAK_CRYPTO)
- krb5_allow_weak_crypto(context, 1);
-#endif
-
/* Initialize list of cells to which we have authenticated */
ll_init(&authedcells);
}
else
usage();
+ else if ((strcmp(argv[i], "-token-lifetime") == 0))
+ if (++i < argc) {
+ status = util_GetInt32(argv[i], &akimp_lifetime);
+ if (status) {
+ fprintf(stderr,
+ "%s: invalid value specified for token-lifetime.\n",
+ progname);
+ exit(AKLOG_MISC);
+ }
+
+ if (akimp_lifetime < 0 || akimp_lifetime > AKIMP_LIFETIME_MAX) {
+ fprintf(stderr,
+ "%s: token-lifetime must be within 0 and %d hrs.\n",
+ progname, AKIMP_LIFETIME_MAX);
+ exit(AKLOG_MISC);
+ }
+
+ akimp_lifetime = akimp_lifetime * 60 * 60;
+ akimplifetime_present = TRUE;
+ }
+ else
+ usage();
else if ((strcmp(argv[i], "-principal") == 0))
if (++i < argc) {
client = argv[i];
}
else
usage();
+ else if (strcmp(argv[i], "-insecure_des") == 0)
+ insecure_des = 1;
else if (argv[i][0] == '-')
usage();
else if (!pmode && !cmode) {
else
usage();
+ /*
+ * Enable DES enctypes if requested. This is not required when rxkad-k5
+ * is used, but some sites may not have updated.
+ * krb5_allow_weak_crypto is MIT Kerberos 1.8. krb5_enctype_enable is
+ * Heimdal.
+ */
+ if (insecure_des) {
+#if defined(HAVE_KRB5_ENCTYPE_ENABLE)
+ i = krb5_enctype_valid(context, ETYPE_DES_CBC_CRC);
+ if (i)
+ krb5_enctype_enable(context, ETYPE_DES_CBC_CRC);
+#elif defined(HAVE_KRB5_ALLOW_WEAK_CRYPTO)
+ krb5_allow_weak_crypto(context, 1);
+#else
+ fprintf(stderr,
+ "%s: -insecure_des is not supported by this libkrb5\n", progname);
+ exit(AKLOG_MISC);
+#endif
+ }
+
if (cmode) {
if (((i + 1) < argc) && (strcmp(argv[i + 1], "-k") == 0)) {
i+=2;
}
}
+ if (akimplifetime_present && !keytab) {
+ fprintf(stderr,
+ "%s: -token-lifetime is valid only if -keytab is specified.\n",
+ progname);
+ exit(AKLOG_MISC);
+ }
+
/* If nothing was given, log to the local cell. */
if ((cells.nelements + paths.nelements) == 0) {
struct passwd *pwd;
krb5_principal client_principal,
time_t starttime,
time_t endtime,
- int *allowed_enctypes,
int *paddress,
krb5_creds** out_creds /* out */ )
{
-#if defined(USING_HEIMDAL) || (defined(HAVE_ENCODE_KRB5_ENC_TKT) && defined(HAVE_ENCODE_KRB5_TICKET) && defined(HAVE_KRB5_C_ENCRYPT))
+#if defined(USING_HEIMDAL) || (defined(HAVE_ENCODE_KRB5_ENC_TKT_PART) && defined(HAVE_ENCODE_KRB5_TICKET) && defined(HAVE_KRB5_C_ENCRYPT))
krb5_error_code code;
krb5_keytab kt = 0;
- krb5_kt_cursor cursor[1];
krb5_keytab_entry entry[1];
krb5_ccache cc = 0;
krb5_creds *creds = 0;
krb5_data * temp;
#endif
int i;
- static int any_enctype[] = {0};
*out_creds = 0;
if (!(creds = malloc(sizeof *creds))) {
code = ENOMEM;
goto cleanup;
}
- if (!allowed_enctypes)
- allowed_enctypes = any_enctype;
cc = 0;
enctype = 0; /* AKIMPERSONATE_IGNORE_ENCTYPE */
goto cleanup;
}
- if (service_principal) {
- for (i = 0; (enctype = allowed_enctypes[i]) || !i; ++i) {
- code = krb5_kt_get_entry(context,
- kt,
- service_principal,
- kvno,
- enctype,
- entry);
- if (!code) {
- if (allowed_enctypes[i])
- deref_keyblock_enctype(session_key) = allowed_enctypes[i];
- break;
- }
- }
- if (code) {
- afs_com_err(progname, code,"while scanning keytab entries");
- goto cleanup;
- }
- } else {
- krb5_keytab_entry new[1];
- int best = -1;
- memset(new, 0, sizeof *new);
- if ((code = krb5_kt_start_seq_get(context, kt, cursor))) {
- afs_com_err(progname, code, "while starting keytab scan");
- goto cleanup;
- }
- while (!(code = krb5_kt_next_entry(context, kt, new, cursor))) {
- for (i = 0;
- allowed_enctypes[i] && allowed_enctypes[i]
- != deref_entry_enctype(new); ++i)
- ;
- if ((!i || allowed_enctypes[i]) &&
- (best < 0 || best > i)) {
- krb5_free_keytab_entry_contents(context, entry);
- *entry = *new;
- memset(new, 0, sizeof *new);
- } else krb5_free_keytab_entry_contents(context, new);
- }
- if ((i = krb5_kt_end_seq_get(context, kt, cursor))) {
- afs_com_err(progname, i, "while ending keytab scan");
- code = i;
- goto cleanup;
- }
- if (best < 0) {
- afs_com_err(progname, code, "while scanning keytab");
- goto cleanup;
- }
+ code = krb5_kt_get_entry(context,
+ kt,
+ service_principal,
+ kvno,
+ enctype,
+ entry);
+ if (!code)
deref_keyblock_enctype(session_key) = deref_entry_enctype(entry);
+ else {
+ afs_com_err(progname, code, "while scanning keytab entries");
+ goto cleanup;
}
/* Make Ticket */
enc_tkt_reply->authtime = starttime;
enc_tkt_reply->starttime = temp_time;
*enc_tkt_reply->starttime = starttime;
-#if 0
- enc_tkt_reply->renew_till = temp_time + 1;
- *enc_tkt_reply->renew_till = endtime;
-#endif
enc_tkt_reply->endtime = endtime;
#else
if ((code = krb5_c_make_random_key(context,
if (deref_enc_data(&ticket_reply->enc_part))
free(deref_enc_data(&ticket_reply->enc_part));
krb5_free_keytab_entry_contents(context, entry);
- if (client_principal)
- krb5_free_principal(context, client_principal);
- if (service_principal)
- krb5_free_principal(context, service_principal);
if (cc)
krb5_cc_close(context, cc);
if (kt)
{
krb5_creds increds;
krb5_error_code r;
- static krb5_principal client_principal = 0;
afs_dprintf("Getting tickets: %s%s%s@%s\n", name,
(inst && inst[0]) ? "/" : "", inst ? inst : "", realm);
name,
(inst && strlen(inst)) ? inst : NULL,
NULL))) {
- return r;
+ goto out;
}
if (!_krb425_ccache) {
r = krb5_cc_default(context, &_krb425_ccache);
if (r)
- return r;
+ goto out;
}
- if (!client_principal) {
- if (client) {
- r = krb5_parse_name(context, client, &client_principal);
- } else {
- r = krb5_cc_get_principal(context, _krb425_ccache, &client_principal);
- }
- if (r)
- return r;
+
+ if (client) {
+ r = krb5_parse_name(context, client, &increds.client);
+ } else {
+ r = krb5_cc_get_principal(context, _krb425_ccache, &increds.client);
}
- increds.client = client_principal;
+ if (r)
+ goto out;
+
increds.times.endtime = 0;
if (do524)
/* Ask for DES since that is what V4 understands */
get_creds_enctype((&increds)) = ENCTYPE_DES_CBC_CRC;
if (keytab) {
- int allowed_enctypes[] = {
- ENCTYPE_DES_CBC_CRC, 0
- };
+ afs_int32 start, end;
+ start = time(NULL);
+
+ if (akimp_lifetime == 0) {
+ end = MAX_AFS_INT32;
+ } else {
+ end = start + akimp_lifetime;
+ }
r = get_credv5_akimpersonate(context,
keytab,
increds.server,
increds.client,
- 300, ((~0U)>>1),
- allowed_enctypes,
+ start, end,
0 /* paddress */,
creds /* out */);
} else {
r = krb5_get_credentials(context, 0, _krb425_ccache, &increds, creds);
}
- return r;
-}
+ out:
+
+ if (increds.server) {
+ krb5_free_principal(context, increds.server);
+ }
+
+ if (increds.client) {
+ krb5_free_principal(context, increds.client);
+ }
+
+ return r;
+}
static int
get_user_realm(krb5_context context, char **realm)
git://git.openafs.org / openafs.git / blobdiff