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00da3519ec
krb5/persistent_keyring.patch
Nalin Dahyabhai bf2b6cb4e7 - incorporate backported persistent-keyring (Simo) 
- incorporate Simo's backport of his persistent-keyring changes (#991148)
2013-09-06 14:12:24 -04:00

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diff --git a/src/aclocal.m4 b/src/aclocal.m4
index 2c17e46..abb3eb5 100644
--- a/src/aclocal.m4
+++ b/src/aclocal.m4
@@ -89,6 +89,7 @@ KRB5_AC_INITFINI
KRB5_AC_ENABLE_THREADS
KRB5_AC_FIND_DLOPEN
KRB5_AC_KEYRING_CCACHE
+KRB5_AC_PERSISTENT_KEYRING
])dnl
dnl Maintainer mode, akin to what automake provides, 'cept we don't
@@ -1664,6 +1665,15 @@ AC_DEFUN(KRB5_AC_KEYRING_CCACHE,[
]))
])dnl
dnl
+dnl If libkeyutils supports persistent keyrings, use them
+AC_DEFUN(KRB5_AC_PERSISTENT_KEYRING,[
+ AC_CHECK_HEADERS([keyutils.h],
+ AC_CHECK_LIB(keyutils, keyctl_get_persistent,
+ [dnl Pre-reqs were found
+ AC_DEFINE(HAVE_PERSISTENT_KEYRING, 1, [Define if persistent keyrings are supported])
+ ]))
+])dnl
+dnl
dnl
dnl Use PAM instead of local crypt() compare for checking local passwords,
dnl and perform PAM account, session management, and password-changing where
diff --git a/src/lib/krb5/ccache/cc_keyring.c b/src/lib/krb5/ccache/cc_keyring.c
index fd1bcec..2c52f73 100644
--- a/src/lib/krb5/ccache/cc_keyring.c
+++ b/src/lib/krb5/ccache/cc_keyring.c
@@ -66,7 +66,12 @@
* not other keyrings
* - Each Kerberos ticket will have its own key within the ccache keyring
* - The principal information for the ccache is stored in a
- * special key, which is not counted in the 'numkeys' count
+ * special key
+ *
+ * For collections:
+ * - A collection is a keyring containing multiple ccache keyrings
+ * - The primary ccache in use is referenced by a special key in the
+ * collection keyring (see below)
*/
#include "cc-int.h"
@@ -101,9 +106,10 @@ debug_print(char *fmt, ...)
#endif
/*
- * We always use "user" key type
+ * We use the "user" key type for labels and "big_key" for tickets
*/
#define KRCC_KEY_TYPE_USER "user"
+#define KRCC_KEY_TYPE_BIG_KEY "big_key"
/*
* We create ccaches as separate keyrings
@@ -117,20 +123,6 @@ debug_print(char *fmt, ...)
#define KRCC_SPEC_PRINC_KEYNAME "__krb5_princ__"
/*
- * XXX The following two really belong in some external
- * header since outside programs will need to use these
- * same names.
- */
-/*
- * Special name for key to communicate key serial numbers
- * This is used by the Linux gssd process to pass the
- * user's keyring values it gets in an upcall.
- * The format of the contents should be
- * <session_key>:<process_key>:<thread_key>
- */
-#define KRCC_SPEC_IDS_KEYNAME "_gssd_keyring_ids_"
-
-/*
* Special name for the key to communicate the name(s)
* of credentials caches to be used for requests.
* This should currently contain a single name, but
@@ -139,26 +131,64 @@ debug_print(char *fmt, ...)
*/
#define KRCC_SPEC_CCACHE_SET_KEYNAME "__krb5_cc_set__"
+/*
+ * Special name that identifies the key that hold the reference to the
+ * current primary ccache in the collection
+ */
+#define KRCC_COLLECTION_PRIMARY "krb_ccache:primary"
+
+/*
+ * Keyring name prefix and length of random name part
+ */
+#define KRCC_NAME_PREFIX "krb_ccache_"
+#define KRCC_NAME_RAND_CHARS 8
+
+#define KRCC_COLLECTION_VERSION 1
+#define KRCC_CCCOL_PREFIX "_krb_"
+
+#define KRCC_PERSIST_PREFIX "persistent:"
+#define KRCC_USER_PREFIX "user:"
+#define KRCC_SESSION_PREFIX "session:"
+#define KRCC_PROCESS_PREFIX "process:"
+#define KRCC_THREAD_PREFIX "thread:"
+
+#define KRCC_HAS_PERSIST_PREFIX(r) \
+ (strncmp(r, KRCC_PERSIST_PREFIX, sizeof(KRCC_PERSIST_PREFIX)-1) == 0)
+#define KRCC_HAS_USER_PREFIX(r) \
+ (strncmp(r, KRCC_USER_PREFIX, sizeof(KRCC_USER_PREFIX)-1) == 0)
+#define KRCC_HAS_SESSION_PREFIX(r) \
+ (strncmp(r, KRCC_SESSION_PREFIX, sizeof(KRCC_SESSION_PREFIX)-1) == 0)
+#define KRCC_HAS_PROCESS_PREFIX(r) \
+ (strncmp(r, KRCC_PROCESS_PREFIX, sizeof(KRCC_PROCESS_PREFIX)-1) == 0)
+#define KRCC_HAS_THREAD_PREFIX(r) \
+ (strncmp(r, KRCC_THREAD_PREFIX, sizeof(KRCC_THREAD_PREFIX)-1) == 0)
+
+#define KRCC_IS_LEGACY_SESSION(r) \
+ (!KRCC_HAS_PERSIST_PREFIX(r) && \
+ !KRCC_HAS_USER_PREFIX(r) && \
+ !KRCC_HAS_SESSION_PREFIX(r) && \
+ !KRCC_HAS_PROCESS_PREFIX(r) && \
+ !KRCC_HAS_THREAD_PREFIX(r))
+
+enum krcc_keyring_type {
+ KRCC_LEGACY_SESSION = 0,
+ KRCC_PERSIST,
+ KRCC_USER,
+ KRCC_SESSION,
+ KRCC_PROCESS,
+ KRCC_THREAD
+};
+
+
#define KRB5_OK 0
/* Hopefully big enough to hold a serialized credential */
-#define GUESS_CRED_SIZE 4096
-
-#define ALLOC(NUM,TYPE) \
- (((NUM) <= (((size_t)0-1)/ sizeof(TYPE))) \
- ? (TYPE *) calloc((NUM), sizeof(TYPE)) \
- : (errno = ENOMEM,(TYPE *) 0))
+#define MAX_CRED_SIZE (1024*1024)
#define CHECK_N_GO(ret, errdest) if (ret != KRB5_OK) goto errdest
#define CHECK(ret) if (ret != KRB5_OK) goto errout
#define CHECK_OUT(ret) if (ret != KRB5_OK) return ret
-typedef struct krb5_krcc_ring_ids {
- key_serial_t session;
- key_serial_t process;
- key_serial_t thread;
-} krb5_krcc_ring_ids_t;
-
typedef struct _krb5_krcc_cursor
{
int numkeys;
@@ -180,9 +210,8 @@ typedef struct _krb5_krcc_data
key_serial_t parent_id; /* parent keyring of this ccache keyring */
key_serial_t ring_id; /* keyring representing ccache */
key_serial_t princ_id; /* key holding principal info */
- int numkeys; /* # of keys in this ring
- * (does NOT include principal info) */
krb5_timestamp changetime;
+ const char *key_type;
} krb5_krcc_data;
/* Passed internally to assure we don't go past the bounds of our buffer */
@@ -190,6 +219,7 @@ typedef struct _krb5_krcc_buffer_cursor
{
char *bpp;
char *endp;
+ size_t size; /* For dry-run length calculation */
} krb5_krcc_bc;
/* Global mutex */
@@ -258,6 +288,18 @@ static krb5_error_code KRB5_CALLCONV krb5_krcc_lock
static krb5_error_code KRB5_CALLCONV krb5_krcc_unlock
(krb5_context context, krb5_ccache id);
+static krb5_error_code KRB5_CALLCONV krb5_krcc_ptcursor_new
+(krb5_context context, krb5_cc_ptcursor *cursor_out);
+
+static krb5_error_code KRB5_CALLCONV krb5_krcc_ptcursor_next
+(krb5_context context, krb5_cc_ptcursor cursor, krb5_ccache *cache_out);
+
+static krb5_error_code KRB5_CALLCONV krb5_krcc_ptcursor_free
+(krb5_context context, krb5_cc_ptcursor *cursor);
+
+static krb5_error_code KRB5_CALLCONV krb5_krcc_switch_to
+(krb5_context context, krb5_ccache cache);
+
/*
* Internal utility functions
*/
@@ -275,103 +317,111 @@ static krb5_error_code krb5_krcc_save_principal
static krb5_error_code krb5_krcc_retrieve_principal
(krb5_context context, krb5_ccache id, krb5_principal * princ);
-static int krb5_krcc_get_ring_ids(krb5_krcc_ring_ids_t *p);
+static krb5_error_code krb5_krcc_resolve_internal
+(key_serial_t ring_id, key_serial_t ccache_id, const char *residual,
+ krb5_ccache *cache_out);
+
+static krb5_error_code krb5_krcc_get_keyring
+(krb5_context context, const char *full_residual, char **name,
+ krb5_boolean *subsidiary, key_serial_t *id);
+
+static krb5_error_code krb5_krcc_default_keyring
+(krb5_context context, krb5_boolean *subsidiary, char **name,
+ key_serial_t *id);
+
+static void krb5_krcc_destroy_primary
+(key_serial_t ring_id);
+
+static const char * krb5_krcc_get_ring_name
+(const char *residual);
+
+static char * krb5_krcc_new_residual
+(const char *residual, const char *ring_name);
+
+static krb5_error_code krb5_krcc_unique_keyring
+(krb5_context context, key_serial_t parent_id, char **retname,
+ key_serial_t *keyring_id);
+
+static krb5_error_code krb5_krcc_set_primary
+(krb5_context context, const char *name, key_serial_t ring_id);
+
+static krb5_error_code krb5_krcc_get_primary
+(krb5_context context, key_serial_t ring_id, char **name);
/* Routines to parse a key from a keyring into a cred structure */
static krb5_error_code krb5_krcc_parse
-(krb5_context, krb5_ccache id, krb5_pointer buf, unsigned int len,
- krb5_krcc_bc * bc);
+(krb5_context, krb5_pointer buf, unsigned int len, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_parse_cred
-(krb5_context context, krb5_ccache id, krb5_creds * creds,
- char *payload, int psize);
+(krb5_context context, krb5_creds * creds, char *payload, int psize);
static krb5_error_code krb5_krcc_parse_principal
-(krb5_context context, krb5_ccache id, krb5_principal * princ,
- krb5_krcc_bc * bc);
+(krb5_context context, krb5_principal * princ, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_parse_keyblock
-(krb5_context context, krb5_ccache id, krb5_keyblock * keyblock,
- krb5_krcc_bc * bc);
+(krb5_context context, krb5_keyblock * keyblock, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_parse_times
-(krb5_context context, krb5_ccache id, krb5_ticket_times * t,
- krb5_krcc_bc * bc);
+(krb5_context context, krb5_ticket_times * t, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_parse_krb5data
-(krb5_context context, krb5_ccache id, krb5_data * data,
- krb5_krcc_bc * bc);
+(krb5_context context, krb5_data * data, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_parse_int32
-(krb5_context context, krb5_ccache id, krb5_int32 * i, krb5_krcc_bc * bc);
+(krb5_context context, krb5_int32 * i, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_parse_octet
-(krb5_context context, krb5_ccache id, krb5_octet * octet,
- krb5_krcc_bc * bc);
+(krb5_context context, krb5_octet * octet, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_parse_addrs
-(krb5_context context, krb5_ccache id, krb5_address *** a,
- krb5_krcc_bc * bc);
+(krb5_context context, krb5_address *** a, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_parse_addr
-(krb5_context context, krb5_ccache id, krb5_address * a,
- krb5_krcc_bc * bc);
+(krb5_context context, krb5_address * a, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_parse_authdata
-(krb5_context context, krb5_ccache id, krb5_authdata *** ad,
- krb5_krcc_bc * bc);
+(krb5_context context, krb5_authdata *** ad, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_parse_authdatum
-(krb5_context context, krb5_ccache id, krb5_authdata * ad,
- krb5_krcc_bc * bc);
+(krb5_context context, krb5_authdata * ad, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_parse_ui_2
-(krb5_context, krb5_ccache id, krb5_ui_2 * i, krb5_krcc_bc * bc);
+(krb5_context, krb5_ui_2 * i, krb5_krcc_bc * bc);
/* Routines to unparse a cred structure into keyring key */
static krb5_error_code krb5_krcc_unparse
-(krb5_context, krb5_ccache id, krb5_pointer buf, unsigned int len,
- krb5_krcc_bc * bc);
-static krb5_error_code krb5_krcc_unparse_cred
-(krb5_context context, krb5_ccache id, krb5_creds * creds,
+(krb5_context, krb5_pointer buf, unsigned int len, krb5_krcc_bc * bc);
+static krb5_error_code krb5_krcc_unparse_cred_alloc
+(krb5_context context, krb5_creds * creds,
char **datapp, unsigned int *lenptr);
+static krb5_error_code krb5_krcc_unparse_cred
+(krb5_context context, krb5_creds * creds, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_unparse_principal
-(krb5_context, krb5_ccache id, krb5_principal princ, krb5_krcc_bc * bc);
+(krb5_context, krb5_principal princ, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_unparse_keyblock
-(krb5_context, krb5_ccache id, krb5_keyblock * keyblock,
- krb5_krcc_bc * bc);
+(krb5_context, krb5_keyblock * keyblock, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_unparse_times
-(krb5_context, krb5_ccache id, krb5_ticket_times * t, krb5_krcc_bc * bc);
+(krb5_context, krb5_ticket_times * t, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_unparse_krb5data
-(krb5_context, krb5_ccache id, krb5_data * data, krb5_krcc_bc * bc);
+(krb5_context, krb5_data * data, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_unparse_int32
-(krb5_context, krb5_ccache id, krb5_int32 i, krb5_krcc_bc * bc);
+(krb5_context, krb5_int32 i, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_unparse_octet
-(krb5_context, krb5_ccache id, krb5_int32 i, krb5_krcc_bc * bc);
+(krb5_context, krb5_int32 i, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_unparse_addrs
-(krb5_context, krb5_ccache, krb5_address ** a, krb5_krcc_bc * bc);
+(krb5_context, krb5_address ** a, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_unparse_addr
-(krb5_context, krb5_ccache, krb5_address * a, krb5_krcc_bc * bc);
+(krb5_context, krb5_address * a, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_unparse_authdata
-(krb5_context, krb5_ccache, krb5_authdata ** ad, krb5_krcc_bc * bc);
+(krb5_context, krb5_authdata ** ad, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_unparse_authdatum
-(krb5_context, krb5_ccache, krb5_authdata * ad, krb5_krcc_bc * bc);
+(krb5_context, krb5_authdata * ad, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_unparse_ui_4
-(krb5_context, krb5_ccache id, krb5_ui_4 i, krb5_krcc_bc * bc);
+(krb5_context, krb5_ui_4 i, krb5_krcc_bc * bc);
static krb5_error_code krb5_krcc_unparse_ui_2
-(krb5_context, krb5_ccache id, krb5_int32 i, krb5_krcc_bc * bc);
+(krb5_context, krb5_int32 i, krb5_krcc_bc * bc);
static void krb5_krcc_update_change_time
(krb5_krcc_data *);
+static krb5_error_code
+krb5_krcc_parse_index(krb5_context context, krb5_int32 *version,
+ char **primary, void *payload, int psize);
+static krb5_error_code
+krb5_krcc_unparse_index(krb5_context context, krb5_int32 version,
+ const char *primary, void **datapp, int *lenptr);
+
/* Note the following is a stub function for Linux */
extern krb5_error_code krb5_change_cache(void);
/*
- * Determine how many keys exist in a ccache keyring.
- * Subtracts out the "hidden" key holding the principal information.
- */
-static int KRB5_CALLCONV
-krb5_krcc_getkeycount(key_serial_t cred_ring)
-{
- int res, nkeys;
-
- res = keyctl_read(cred_ring, NULL, 0);
- if (res > 0)
- nkeys = (res / sizeof(key_serial_t)) - 1;
- else
- nkeys = 0;
- return(nkeys);
-}
-
-/*
* Modifies:
* id
*
@@ -388,24 +438,81 @@ static krb5_error_code KRB5_CALLCONV
krb5_krcc_initialize(krb5_context context, krb5_ccache id,
krb5_principal princ)
{
+ krb5_krcc_data *data = (krb5_krcc_data *)id->data;
krb5_error_code kret;
+ char *new_name = NULL;
+ char *residual;
+ const char *name;
+ key_serial_t key;
DEBUG_PRINT(("krb5_krcc_initialize: entered\n"));
- kret = k5_cc_mutex_lock(context, &((krb5_krcc_data *) id->data)->lock);
- if (kret)
- return kret;
+ k5_cc_mutex_lock(context, &data->lock);
kret = krb5_krcc_clearcache(context, id);
if (kret != KRB5_OK)
goto out;
+ if (data->ring_id == 0) {
+ /* deferred initialization */
+ name = krb5_krcc_get_ring_name(data->name);
+
+ if (name[0] == '\0') {
+ /* empty initial primary key, geneate new unique one */
+ kret = krb5_krcc_unique_keyring(context, data->parent_id,
+ &new_name, &key);
+ if (kret)
+ goto out;
+
+ kret = krb5_krcc_set_primary(context, new_name, data->parent_id);
+ if (kret)
+ goto out;
+
+ residual = krb5_krcc_new_residual(data->name, new_name);
+ if (!residual) {
+ kret = ENOMEM;
+ goto out;
+ }
+ free(data->name);
+ data->name = residual;
+ name = new_name;
+ } else {
+ /* either dangling primary key or legacy session cache */
+ key = keyctl_search(data->parent_id, KRCC_KEY_TYPE_KEYRING,
+ name, 0);
+ if (key == -1) {
+ key = add_key(KRCC_KEY_TYPE_KEYRING, name, NULL, 0,
+ data->parent_id);
+ if (key == -1) {
+ kret = errno;
+ DEBUG_PRINT(("krb5_krcc_initialize: Error adding new "
+ "keyring '%s': %s\n", name, strerror(kret)));
+ goto out;
+ }
+ DEBUG_PRINT(("krb5_krcc_initialize: new keyring '%s', key %d, "
+ "added to keyring %d\n", name, key, ring_id));
+ }
+ }
+ data->ring_id = key;
+ }
+
+ /* If this is a legacy session make sure to link the ccache keyring
+ * directly in the session keyring too */
+ if (KRCC_IS_LEGACY_SESSION(data->name)) {
+ /* legacy session */
+ if (keyctl_link(data->ring_id, KEY_SPEC_SESSION_KEYRING) == -1) {
+ DEBUG_PRINT(("krb5_krcc_initialize: failed to link ccache "
+ "keyring to session keyring %d\n", errno));
+ }
+ }
+
kret = krb5_krcc_save_principal(context, id, princ);
if (kret == KRB5_OK)
krb5_change_cache();
out:
- k5_cc_mutex_unlock(context, &((krb5_krcc_data *) id->data)->lock);
+ k5_cc_mutex_unlock(context, &data->lock);
+ free(new_name);
return kret;
}
@@ -460,20 +567,33 @@ krb5_krcc_clearcache(krb5_context context, krb5_ccache id)
d = (krb5_krcc_data *) id->data;
- DEBUG_PRINT(("krb5_krcc_clearcache: ring_id %d, princ_id %d, "
- "numkeys is %d\n", d->ring_id, d->princ_id, d->numkeys));
+ DEBUG_PRINT(("krb5_krcc_clearcache: ring_id %d, princ_id %d\n",
+ d->ring_id, d->princ_id));
- res = keyctl_clear(d->ring_id);
- if (res != 0) {
- return errno;
+ if (d->ring_id) {
+ res = keyctl_clear(d->ring_id);
+ if (res != 0)
+ return errno;
}
- d->numkeys = 0;
d->princ_id = 0;
krb5_krcc_update_change_time(d);
return KRB5_OK;
}
+static void krb5_krcc_destroy_primary(key_serial_t id)
+{
+ key_serial_t key;
+
+ key = keyctl_search(id, KRCC_KEY_TYPE_USER, KRCC_COLLECTION_PRIMARY, 0);
+ if (key != -1) {
+ if (keyctl_unlink(key, id) == -1) {
+ DEBUG_PRINT(("krb5_krcc_destroy_primary: unlinking key %d from "
+ "keyring %d: %s\n", key, id, error_message(errno)));
+ }
+ }
+}
+
/*
* Effects:
* Destroys the contents of id.
@@ -484,7 +604,7 @@ krb5_krcc_clearcache(krb5_context context, krb5_ccache id)
static krb5_error_code KRB5_CALLCONV
krb5_krcc_destroy(krb5_context context, krb5_ccache id)
{
- krb5_error_code kret;
+ krb5_error_code kret = 0;
krb5_krcc_data *d;
int res;
@@ -492,20 +612,22 @@ krb5_krcc_destroy(krb5_context context, krb5_ccache id)
d = (krb5_krcc_data *) id->data;
- kret = k5_cc_mutex_lock(context, &d->lock);
- if (kret)
- return kret;
+ k5_cc_mutex_lock(context, &d->lock);
krb5_krcc_clearcache(context, id);
free(d->name);
res = keyctl_unlink(d->ring_id, d->parent_id);
- if (res < 0) {
- kret = errno;
- DEBUG_PRINT(("krb5_krcc_destroy: unlinking key %d from ring %d: %s",
- d->ring_id, d->parent_id, error_message(errno)));
- goto cleanup;
+ if (d->ring_id) {
+ if (res == -1) {
+ kret = errno;
+ DEBUG_PRINT(("krb5_krcc_destroy: unlinking key %d from keyring "
+ "%d: %s\n", d->ring_id, d->parent_id,
+ error_message(errno)));
+ }
}
-cleanup:
+ /* also remove primary key if any */
+ krb5_krcc_destroy_primary(d->parent_id);
+
k5_cc_mutex_unlock(context, &d->lock);
k5_cc_mutex_destroy(&d->lock);
free(d);
@@ -513,9 +635,131 @@ cleanup:
krb5_change_cache();
- return KRB5_OK;
+ return kret;
+}
+
+static krb5_error_code
+krb5_krcc_unique_keyring(krb5_context context, key_serial_t parent_id,
+ char **retname, key_serial_t *keyring_id)
+{
+ key_serial_t keyring;
+ krb5_error_code kret;
+ char uniquename[sizeof(KRCC_NAME_PREFIX) + KRCC_NAME_RAND_CHARS];
+ int prefixlen = sizeof(KRCC_NAME_PREFIX) - 1;
+ int tries;
+
+/* XXX This values is platform-specific and should not be here! */
+/* XXX There is a bug in FC5 where this is not included in errno.h */
+#ifndef ENOKEY
+#define ENOKEY 126 /* Required key not available */
+#endif
+
+ memcpy(uniquename, KRCC_NAME_PREFIX, sizeof(KRCC_NAME_PREFIX));
+ /*
+ * Loop until we successfully create a new ccache keyring with
+ * a unique name, or we get an error. Limit to 100 tries.
+ */
+ k5_cc_mutex_lock(context, &krb5int_krcc_mutex);
+
+ tries = 100;
+ while (tries-- > 0) {
+ kret = krb5int_random_string(context, uniquename + prefixlen,
+ KRCC_NAME_RAND_CHARS);
+ if (kret) goto done;
+
+ DEBUG_PRINT(("krb5_krcc_unique_keyring: searching for name '%s'\n",
+ uniquename));
+ keyring = keyctl_search(parent_id,
+ KRCC_KEY_TYPE_KEYRING, uniquename, 0);
+ /*XXX*/ DEBUG_PRINT(("krb5_krcc_unique_keyring: after searching for '%s', keyring = %d, errno = %d\n", uniquename, keyring, errno));
+ if (keyring < 0 && errno == ENOKEY) {
+ /* name does not already exist, create it to reserve the name */
+ keyring = add_key(KRCC_KEY_TYPE_KEYRING,
+ uniquename, NULL, 0, parent_id);
+ if (keyring < 0) {
+ kret = errno;
+ DEBUG_PRINT(("krb5_krcc_unique_keyring: '%s' trying to "
+ "create '%s'\n", strerror(errno), uniquename));
+ goto done;
+ }
+ break;
+ }
+ }
+
+ if (tries <= 0) {
+ kret = KRB5_CC_BADNAME;
+ goto done;
+ }
+
+ *retname = strdup(uniquename);
+ if (!*retname) {
+ kret = ENOMEM;
+ goto done;
+ }
+ *keyring_id = keyring;
+ kret = KRB5_OK;
+done:
+ k5_cc_mutex_unlock(context, &krb5int_krcc_mutex);
+ return kret;
+}
+
+static krb5_error_code
+krb5_krcc_resolve_internal(key_serial_t ring_id, key_serial_t ccache_id,
+ const char *residual, krb5_ccache *cache_out)
+{
+ krb5_error_code kret;
+ krb5_ccache ccache = NULL;
+ krb5_krcc_data *d;
+ key_serial_t pkey = 0;
+
+ /* Determine key containing principal information */
+ pkey = keyctl_search(ccache_id, KRCC_KEY_TYPE_USER,
+ KRCC_SPEC_PRINC_KEYNAME, 0);
+ if (pkey < 0) {
+ DEBUG_PRINT(("krb5_krcc_resolve_internal: Error locating principal "
+ "info for existing ccache in ring %d: %s\n",
+ ccache_id, strerror(errno)));
+ pkey = 0;
+ }
+
+ ccache = malloc(sizeof(struct _krb5_ccache));
+ if (!ccache)
+ return ENOMEM;
+
+ kret = krb5_krcc_new_data(residual, ccache_id, ring_id, &d);
+ if (kret) {
+ goto done;
+ }
+
+ DEBUG_PRINT(("krb5_krcc_resolve_internal: ring_id %d, princ_id %d, "
+ "nkeys %d\n", ccache_id, pkey, nkeys));
+ d->princ_id = pkey;
+ ccache->ops = &krb5_krcc_ops;
+ ccache->data = d;
+ ccache->magic = KV5M_CCACHE;
+ *cache_out = ccache;
+ kret = KRB5_OK;
+
+done:
+ if (kret) {
+ free(ccache);
+ }
+ return kret;
}
+static const char *
+krb5_krcc_get_ring_name(const char *residual)
+{
+ const char *name;
+
+ name = strrchr(residual, ':');
+ if (name) {
+ name += 1;
+ return name;
+ }
+
+ return residual;
+}
/*
* Requires:
@@ -532,45 +776,28 @@ cleanup:
* A filled in krb5_ccache structure "id".
*
* Errors:
- * KRB5_CC_NOMEM - there was insufficient memory to allocate the
- * krb5_ccache. id is undefined.
+ * EINVAL - the residual name is invalid.
+ * ENOMEM - there was insufficient memory for allocations.
+ * id is undefined.
* permission errors
*/
static krb5_error_code KRB5_CALLCONV
krb5_krcc_resolve(krb5_context context, krb5_ccache * id, const char *full_residual)
{
- krb5_ccache lid;
krb5_error_code kret;
- krb5_krcc_data *d;
key_serial_t key;
- key_serial_t pkey = 0;
- int nkeys = 0;
- int res;
- krb5_krcc_ring_ids_t ids;
key_serial_t ring_id;
- const char *residual;
+ char *residual;
+ const char *name;
DEBUG_PRINT(("krb5_krcc_resolve: entered with name '%s'\n",
full_residual));
- res = krb5_krcc_get_ring_ids(&ids);
- if (res) {
- kret = EINVAL;
- DEBUG_PRINT(("krb5_krcc_resolve: Error getting ring id values!\n"));
+ kret = krb5_krcc_get_keyring(context, full_residual,
+ &residual, NULL, &ring_id);
+ if (kret)
return kret;
- }
-
- if (strncmp(full_residual, "thread:", 7) == 0) {
- residual = full_residual + 7;
- ring_id = ids.thread;
- } else if (strncmp(full_residual, "process:", 8) == 0) {
- residual = full_residual + 8;
- ring_id = ids.process;
- } else {
- residual = full_residual;
- ring_id = ids.session;
- }
DEBUG_PRINT(("krb5_krcc_resolve: searching ring %d for residual '%s'\n",
ring_id, residual));
@@ -584,55 +811,24 @@ krb5_krcc_resolve(krb5_context context, krb5_ccache * id, const char *full_resid
* the process and session rings if not found in the thread ring?
*
*/
- key = keyctl_search(ring_id, KRCC_KEY_TYPE_KEYRING, residual, 0);
- if (key < 0) {
- key = add_key(KRCC_KEY_TYPE_KEYRING, residual, NULL, 0, ring_id);
- if (key < 0) {
- kret = errno;
- DEBUG_PRINT(("krb5_krcc_resolve: Error adding new "
- "keyring '%s': %s\n", residual, strerror(errno)));
- return kret;
- }
- DEBUG_PRINT(("krb5_krcc_resolve: new keyring '%s', "
- "key %d, added to keyring %d\n",
- residual, key, ring_id));
+
+ name = krb5_krcc_get_ring_name(residual);
+
+ key = keyctl_search(ring_id, KRCC_KEY_TYPE_KEYRING, name, 0);
+ if (key == -1) {
+ DEBUG_PRINT(("krb5_krcc_resolve: primary ccache keyring %s "
+ "not found in keyring %d\n", name, ring_id));
+ key = 0;
} else {
DEBUG_PRINT(("krb5_krcc_resolve: found existing "
"key %d, with name '%s' in keyring %d\n",
- key, residual, ring_id));
- /* Determine key containing principal information */
- pkey = keyctl_search(key, KRCC_KEY_TYPE_USER,
- KRCC_SPEC_PRINC_KEYNAME, 0);
- if (pkey < 0) {
- DEBUG_PRINT(("krb5_krcc_resolve: Error locating principal "
- "info for existing ccache in ring %d: %s\n",
- key, strerror(errno)));
- pkey = 0;
- }
- /* Determine how many keys exist */
- nkeys = krb5_krcc_getkeycount(key);
+ key, name, ring_id));
}
- lid = (krb5_ccache) malloc(sizeof(struct _krb5_ccache));
- if (lid == NULL)
- return KRB5_CC_NOMEM;
-
-
- kret = krb5_krcc_new_data(residual, key, ring_id, &d);
- if (kret) {
- free(lid);
- return kret;
- }
+ kret = krb5_krcc_resolve_internal(ring_id, key, residual, id);
- DEBUG_PRINT(("krb5_krcc_resolve: ring_id %d, princ_id %d, "
- "nkeys %d\n", key, pkey, nkeys));
- d->princ_id = pkey;
- d->numkeys = nkeys;
- lid->ops = &krb5_krcc_ops;
- lid->data = d;
- lid->magic = KV5M_CCACHE;
- *id = lid;
- return KRB5_OK;
+ free(residual);
+ return kret;
}
/*
@@ -652,48 +848,40 @@ static krb5_error_code KRB5_CALLCONV
krb5_krcc_start_seq_get(krb5_context context, krb5_ccache id,
krb5_cc_cursor * cursor)
{
- krb5_krcc_cursor krcursor;
krb5_error_code kret;
+ krb5_krcc_cursor krcursor;
krb5_krcc_data *d;
- unsigned int size;
- int res;
+ void *keys;
+ long size;
DEBUG_PRINT(("krb5_krcc_start_seq_get: entered\n"));
d = id->data;
- kret = k5_cc_mutex_lock(context, &d->lock);
- if (kret)
- return kret;
-
- /*
- * Determine how many keys currently exist and update numkeys.
- * We cannot depend on the current value of numkeys because
- * the ccache may have been updated elsewhere
- */
- d->numkeys = krb5_krcc_getkeycount(d->ring_id);
+ k5_cc_mutex_lock(context, &d->lock);
- size = sizeof(*krcursor) + ((d->numkeys + 1) * sizeof(key_serial_t));
+ if (!d->ring_id) {
+ k5_cc_mutex_unlock(context, &d->lock);
+ return KRB5_FCC_NOFILE;
+ }
- krcursor = (krb5_krcc_cursor) malloc(size);
- if (krcursor == NULL) {
+ size = keyctl_read_alloc(d->ring_id, &keys);
+ if (size == -1) {
+ kret = errno;
+ DEBUG_PRINT(("Error getting from keyring: %s\n", strerror(errno)));
k5_cc_mutex_unlock(context, &d->lock);
- return KRB5_CC_NOMEM;
+ return kret;
}
- krcursor->keys = (key_serial_t *) ((char *) krcursor + sizeof(*krcursor));
- res = keyctl_read(d->ring_id, (char *) krcursor->keys,
- ((d->numkeys + 1) * sizeof(key_serial_t)));
- if (res < 0 || res > ((d->numkeys + 1) * sizeof(key_serial_t))) {
- DEBUG_PRINT(("Read %d bytes from keyring, numkeys %d: %s\n",
- res, d->numkeys, strerror(errno)));
- free(krcursor);
+ krcursor = calloc(1, sizeof(struct _krb5_krcc_cursor));
+ if (krcursor == NULL) {
+ free(keys);
k5_cc_mutex_unlock(context, &d->lock);
- return KRB5_CC_IO;
+ return KRB5_CC_NOMEM;
}
- krcursor->numkeys = d->numkeys;
- krcursor->currkey = 0;
krcursor->princ_id = d->princ_id;
+ krcursor->numkeys = size / sizeof(key_serial_t);
+ krcursor->keys = keys;
k5_cc_mutex_unlock(context, &d->lock);
*cursor = (krb5_cc_cursor) krcursor;
@@ -741,14 +929,14 @@ krb5_krcc_next_cred(krb5_context context, krb5_ccache id,
memset(creds, 0, sizeof(krb5_creds));
/* If we're pointing past the end of the keys array, there are no more */
- if (krcursor->currkey > krcursor->numkeys)
+ if (krcursor->currkey >= krcursor->numkeys)
return KRB5_CC_END;
/* If we're pointing at the entry with the principal, skip it */
if (krcursor->keys[krcursor->currkey] == krcursor->princ_id) {
krcursor->currkey++;
/* Check if we have now reached the end */
- if (krcursor->currkey > krcursor->numkeys)
+ if (krcursor->currkey >= krcursor->numkeys)
return KRB5_CC_END;
}
@@ -763,7 +951,7 @@ krb5_krcc_next_cred(krb5_context context, krb5_ccache id,
}
krcursor->currkey++;
- kret = krb5_krcc_parse_cred(context, id, creds, payload, psize);
+ kret = krb5_krcc_parse_cred(context, creds, payload, psize);
freepayload:
if (payload) free(payload);
@@ -787,13 +975,33 @@ static krb5_error_code KRB5_CALLCONV
krb5_krcc_end_seq_get(krb5_context context, krb5_ccache id,
krb5_cc_cursor * cursor)
{
+ krb5_krcc_cursor krcursor = (krb5_krcc_cursor)*cursor;
DEBUG_PRINT(("krb5_krcc_end_seq_get: entered\n"));
- free(*cursor);
- *cursor = 0L;
+ if (krcursor) {
+ free(krcursor->keys);
+ free(krcursor);
+ }
+ *cursor = NULL;
return KRB5_OK;
}
+static const char *
+krb5_krcc_use_key_type(const char *residual)
+{
+ if (KRCC_HAS_PERSIST_PREFIX(residual)
+ || KRCC_HAS_USER_PREFIX(residual)
+ || KRCC_HAS_SESSION_PREFIX(residual)
+ || KRCC_HAS_PROCESS_PREFIX(residual)
+ || KRCC_HAS_THREAD_PREFIX(residual)) {
+ /* new methods, try to use big_key */
+ return KRCC_KEY_TYPE_BIG_KEY;
+ } else {
+ /* legacy session type, always use user type */
+ return KRCC_KEY_TYPE_USER;
+ }
+}
+
/* Utility routine: Creates the back-end data for a keyring cache.
Call with the global list lock held. */
@@ -823,14 +1031,54 @@ krb5_krcc_new_data(const char *name, key_serial_t ring,
d->princ_id = 0;
d->ring_id = ring;
d->parent_id = parent_ring;
- d->numkeys = 0;
d->changetime = 0;
+ d->key_type = krb5_krcc_use_key_type(name);
krb5_krcc_update_change_time(d);
*datapp = d;
return 0;
}
+static char *
+krb5_krcc_new_residual(const char *residual, const char *ring_name)
+{
+ char *r, *p;
+ const char *resname;
+ size_t rl, rn;
+
+ if (KRCC_HAS_PROCESS_PREFIX(residual)) {
+ resname = residual + sizeof(KRCC_PROCESS_PREFIX);
+ } else if (KRCC_HAS_THREAD_PREFIX(residual)) {
+ resname = residual + sizeof(KRCC_THREAD_PREFIX);
+ } else if (KRCC_HAS_PERSIST_PREFIX(residual)) {
+ resname = residual + sizeof(KRCC_PERSIST_PREFIX);
+ } else if (KRCC_HAS_USER_PREFIX(residual)) {
+ resname = residual + sizeof(KRCC_USER_PREFIX);
+ } else if (KRCC_HAS_SESSION_PREFIX(residual)) {
+ resname = residual + sizeof(KRCC_SESSION_PREFIX);
+ } else {
+ /* legacy session type, replace the full residual */
+ return strdup(ring_name);
+ }
+
+ /* the ':' after the type prefix is already skipped above */
+ p = strrchr(resname, ':');
+ if (p)
+ rl = p - residual; /* excludes subsidiary ':' */
+ else
+ rl = strlen(residual);
+ rn = strlen(ring_name) + 1; /* includes \0 */
+
+ r = malloc(rl + 1 + rn);
+ if (!r)
+ return NULL;
+
+ memcpy(r, residual, rl);
+ r[rl++] = ':';
+ memcpy(&r[rl], ring_name, rn);
+ return r;
+}
+
/*
* Effects:
* Creates a new keyring cred cache whose name is guaranteed to be
@@ -846,82 +1094,67 @@ krb5_krcc_new_data(const char *name, key_serial_t ring,
static krb5_error_code KRB5_CALLCONV
krb5_krcc_generate_new(krb5_context context, krb5_ccache * id)
{
- krb5_ccache lid;
- char uniquename[8];
+ krb5_ccache lid = NULL;
+ char *uniquename = NULL;
+ char *residual = NULL;
+ char *new_res = NULL;
krb5_error_code kret;
krb5_krcc_data *d;
- key_serial_t ring_id = KEY_SPEC_SESSION_KEYRING;
- key_serial_t key;
+ krb5_boolean subsidiary;
+ key_serial_t ring_id;
+ key_serial_t key = 0;
DEBUG_PRINT(("krb5_krcc_generate_new: entered\n"));
+ kret = krb5_krcc_default_keyring(context, &subsidiary,
+ &residual, &ring_id);
+ if (kret)
+ return kret;
+
+ if (subsidiary) {
+ krb5_set_error_message(context, KRB5_DCC_CANNOT_CREATE,
+ _("Can't create new subsidiary cache because "
+ "default cache is already a subsdiary"));
+ kret = KRB5_DCC_CANNOT_CREATE;
+ goto done;
+ }
+
/* Allocate memory */
lid = (krb5_ccache) malloc(sizeof(struct _krb5_ccache));
- if (lid == NULL)
- return KRB5_CC_NOMEM;
+ if (lid == NULL) {
+ kret = ENOMEM;
+ goto done;
+ }
lid->ops = &krb5_krcc_ops;
- kret = k5_cc_mutex_lock(context, &krb5int_krcc_mutex);
- if (kret) {
- free(lid);
- return kret;
- }
+ kret = krb5_krcc_unique_keyring(context, ring_id, &uniquename, &key);
+ if (kret)
+ goto done;
-/* XXX These values are platform-specific and should not be here! */
-/* XXX There is a bug in FC5 where these are not included in errno.h */
-#ifndef ENOKEY
-#define ENOKEY 126 /* Required key not available */
-#endif
-#ifndef EKEYEXPIRED
-#define EKEYEXPIRED 127 /* Key has expired */
-#endif
-#ifndef EKEYREVOKED
-#define EKEYREVOKED 128 /* Key has been revoked */
-#endif
-#ifndef EKEYREJECTED
-#define EKEYREJECTED 129 /* Key was rejected by service */
-#endif
+ new_res = krb5_krcc_new_residual(residual, uniquename);
+ if (!new_res) {
+ kret = ENOMEM;
+ goto done;
+ }
- /*
- * Loop until we successfully create a new ccache keyring with
- * a unique name, or we get an error.
- */
- while (1) {
- kret = krb5int_random_string(context, uniquename, sizeof(uniquename));
- if (kret) {
- k5_cc_mutex_unlock(context, &krb5int_krcc_mutex);
- free(lid);
- return kret;
- }
+ kret = krb5_krcc_new_data(new_res, key, ring_id, &d);
+ if (kret)
+ goto done;
- DEBUG_PRINT(("krb5_krcc_generate_new: searching for name '%s'\n",
- uniquename));
- key = keyctl_search(ring_id, KRCC_KEY_TYPE_KEYRING, uniquename, 0);
- /*XXX*/ DEBUG_PRINT(("krb5_krcc_generate_new: after searching for '%s', key = %d, errno = %d\n", uniquename, key, errno));
- if (key < 0 && errno == ENOKEY) {
- /* name does not already exist, create it to reserve the name */
- key = add_key(KRCC_KEY_TYPE_KEYRING, uniquename, NULL, 0, ring_id);
- if (key < 0) {
- kret = errno;
- DEBUG_PRINT(("krb5_krcc_generate_new: '%s' trying to "
- "create '%s'\n", strerror(errno), uniquename));
- k5_cc_mutex_unlock(context, &krb5int_krcc_mutex);
- return kret;
- }
- break;
- }
- }
+ lid->data = d;
+ krb5_change_cache();
+ kret = KRB5_OK;
- kret = krb5_krcc_new_data(uniquename, key, ring_id, &d);
- k5_cc_mutex_unlock(context, &krb5int_krcc_mutex);
+done:
+ free(uniquename);
+ free(residual);
+ free(new_res);
if (kret) {
free(lid);
return kret;
}
- lid->data = d;
*id = lid;
- krb5_change_cache();
return KRB5_OK;
}
@@ -1001,8 +1234,9 @@ krb5_krcc_remove_cred(krb5_context context, krb5_ccache cache,
static krb5_error_code KRB5_CALLCONV
krb5_krcc_set_flags(krb5_context context, krb5_ccache id, krb5_flags flags)
{
+ krb5_krcc_data *d = (krb5_krcc_data *)id->data;
DEBUG_PRINT(("krb5_krcc_set_flags: entered\n"));
-
+ if (d->ring_id == 0) return KRB5_FCC_NOFILE;
return KRB5_OK;
}
@@ -1015,6 +1249,22 @@ krb5_krcc_get_flags(krb5_context context, krb5_ccache id, krb5_flags * flags)
return KRB5_OK;
}
+static key_serial_t
+krb5_krcc_add_key(const char *name, const void *payload, size_t plen,
+ krb5_krcc_data *data)
+{
+#ifdef HAVE_PERSISTENT_KEYRING
+ key_serial_t key;
+
+ /* try with big_key and if it fails fall back to user key */
+ errno = 0;
+ key = add_key(data->key_type, name, payload, plen, data->ring_id);
+ if (key != -1 || errno != EINVAL)
+ return key;
+#endif
+ return add_key(KRCC_KEY_TYPE_USER, name, payload, plen, data->ring_id);
+}
+
/* store: Save away creds in the ccache keyring. */
static krb5_error_code KRB5_CALLCONV
krb5_krcc_store(krb5_context context, krb5_ccache id, krb5_creds * creds)
@@ -1025,12 +1275,17 @@ krb5_krcc_store(krb5_context context, krb5_ccache id, krb5_creds * creds)
unsigned int payloadlen;
key_serial_t newkey;
char *keyname = NULL;
+ long timeout;
+ long res;
DEBUG_PRINT(("krb5_krcc_store: entered\n"));
- kret = k5_cc_mutex_lock(context, &d->lock);
- if (kret)
- return kret;
+ k5_cc_mutex_lock(context, &d->lock);
+
+ if (!d->ring_id) {
+ k5_cc_mutex_unlock(context, &d->lock);
+ return KRB5_FCC_NOFILE;
+ }
/* Get the service principal name and use it as the key name */
kret = krb5_unparse_name(context, creds->server, &keyname);
@@ -1040,25 +1295,33 @@ krb5_krcc_store(krb5_context context, krb5_ccache id, krb5_creds * creds)
}
/* Serialize credential into memory */
- kret = krb5_krcc_unparse_cred(context, id, creds, &payload, &payloadlen);
+ kret = krb5_krcc_unparse_cred_alloc(context, creds, &payload, &payloadlen);
if (kret != KRB5_OK)
goto errout;
/* Add new key (credentials) into keyring */
DEBUG_PRINT(("krb5_krcc_store: adding new key '%s' to keyring %d\n",
keyname, d->ring_id));
- newkey = add_key(KRCC_KEY_TYPE_USER, keyname, payload,
- payloadlen, d->ring_id);
+ newkey = krb5_krcc_add_key(keyname, payload, payloadlen, d);
if (newkey < 0) {
kret = errno;
DEBUG_PRINT(("Error adding user key '%s': %s\n",
keyname, strerror(kret)));
- } else {
- d->numkeys++;
- kret = KRB5_OK;
- krb5_krcc_update_change_time(d);
+ goto errout;
+ }
+
+ timeout = creds->times.endtime - time(NULL);
+ /* if it wraps do not try to set timestamp */
+ if (timeout > 0) {
+ res = keyctl_set_timeout(d->ring_id, timeout);
+ if (res != 0)
+ DEBUG_PRINT(("krb5_krcc_store: Failed to set ccache timeout "
+ "[%ld]", timeout));
}
+ kret = KRB5_OK;
+ krb5_krcc_update_change_time(d);
+
errout:
if (keyname)
krb5_free_unparsed_name(context, keyname);
@@ -1073,36 +1336,30 @@ static krb5_error_code KRB5_CALLCONV
krb5_krcc_last_change_time(krb5_context context, krb5_ccache id,
krb5_timestamp *change_time)
{
- krb5_error_code ret = 0;
krb5_krcc_data *data = (krb5_krcc_data *) id->data;
- *change_time = 0;
-
- ret = k5_cc_mutex_lock(context, &data->lock);
- if (!ret) {
- *change_time = data->changetime;
- k5_cc_mutex_unlock(context, &data->lock);
- }
-
- return ret;
+ k5_cc_mutex_lock(context, &data->lock);
+ *change_time = data->changetime;
+ k5_cc_mutex_unlock(context, &data->lock);
+ return 0;
}
static krb5_error_code KRB5_CALLCONV
krb5_krcc_lock(krb5_context context, krb5_ccache id)
{
- krb5_error_code ret = 0;
krb5_krcc_data *data = (krb5_krcc_data *) id->data;
- ret = k5_cc_mutex_lock(context, &data->lock);
- return ret;
+
+ k5_cc_mutex_lock(context, &data->lock);
+ return 0;
}
static krb5_error_code KRB5_CALLCONV
krb5_krcc_unlock(krb5_context context, krb5_ccache id)
{
- krb5_error_code ret = 0;
krb5_krcc_data *data = (krb5_krcc_data *) id->data;
- ret = k5_cc_mutex_unlock(context, &data->lock);
- return ret;
+
+ k5_cc_mutex_unlock(context, &data->lock);
+ return 0;
}
@@ -1112,7 +1369,7 @@ krb5_krcc_save_principal(krb5_context context, krb5_ccache id,
{
krb5_krcc_data *d;
krb5_error_code kret;
- char *payload;
+ char *payload = NULL;
key_serial_t newkey;
unsigned int payloadsize;
krb5_krcc_bc bc;
@@ -1121,14 +1378,19 @@ krb5_krcc_save_principal(krb5_context context, krb5_ccache id,
d = (krb5_krcc_data *) id->data;
- payload = malloc(GUESS_CRED_SIZE);
+ /* Do a dry run first to calculate the size. */
+ bc.bpp = bc.endp = NULL;
+ bc.size = 0;
+ kret = krb5_krcc_unparse_principal(context, princ, &bc);
+ CHECK_N_GO(kret, errout);
+
+ /* Allocate a buffer and serialize for real. */
+ payload = malloc(bc.size);
if (payload == NULL)
return KRB5_CC_NOMEM;
-
bc.bpp = payload;
- bc.endp = payload + GUESS_CRED_SIZE;
-
- kret = krb5_krcc_unparse_principal(context, id, princ, &bc);
+ bc.endp = payload + bc.size;
+ kret = krb5_krcc_unparse_principal(context, princ, &bc);
CHECK_N_GO(kret, errout);
/* Add new key into keyring */
@@ -1172,11 +1434,9 @@ krb5_krcc_retrieve_principal(krb5_context context, krb5_ccache id,
int psize;
krb5_krcc_bc bc;
- kret = k5_cc_mutex_lock(context, &d->lock);
- if (kret)
- return kret;
+ k5_cc_mutex_lock(context, &d->lock);
- if (!d->princ_id) {
+ if (!d->ring_id || !d->princ_id) {
princ = 0L;
kret = KRB5_FCC_NOFILE;
goto errout;
@@ -1191,7 +1451,7 @@ krb5_krcc_retrieve_principal(krb5_context context, krb5_ccache id,
}
bc.bpp = payload;
bc.endp = (char *)payload + psize;
- kret = krb5_krcc_parse_principal(context, id, princ, &bc);
+ kret = krb5_krcc_parse_principal(context, princ, &bc);
errout:
if (payload)
@@ -1200,57 +1460,537 @@ errout:
return kret;
}
-static int
-krb5_krcc_get_ring_ids(krb5_krcc_ring_ids_t *p)
+static krb5_error_code
+krb5_krcc_set_primary(krb5_context context, const char *name,
+ key_serial_t ring_id)
{
- key_serial_t ids_key;
- char ids_buf[128];
- key_serial_t session, process, thread;
- long val;
+ krb5_error_code kret;
+ key_serial_t key;
+ void *payload = NULL;
+ int payloadlen;
- DEBUG_PRINT(("krb5_krcc_get_ring_ids: entered\n"));
+ kret = krb5_krcc_unparse_index(context, KRCC_COLLECTION_VERSION,
+ name, &payload, &payloadlen);
+ if (kret) {
+ DEBUG_PRINT(("krb5_krcc_set_primary: Error creating primary with "
+ "content [%d:%s]", KRCC_COLLECTION_VERSION, name));
+ return kret;
+ }
- if (!p)
- return EINVAL;
+ key = add_key(KRCC_KEY_TYPE_USER, KRCC_COLLECTION_PRIMARY,
+ payload, payloadlen, ring_id);
+ if (key == -1) {
+ kret = errno;
+ DEBUG_PRINT(("krb5_krcc_set_primary: Error setting primary key: "
+ "%s\n", strerror(kret)));
+ goto done;
+ }
- /* Use the defaults in case we find no ids key */
- p->session = KEY_SPEC_SESSION_KEYRING;
- p->process = KEY_SPEC_PROCESS_KEYRING;
- p->thread = KEY_SPEC_THREAD_KEYRING;
+ DEBUG_PRINT(("krb5_krcc_set_primary: created primary key %d, for "
+ "keyring %d (%s)\n", key, ring_id, name));
+ kret = KRB5_OK;
- /*
- * Note that in the "normal" case, this will not be found.
- * The Linux gssd creates this key while creating a
- * context to communicate the user's key serial numbers.
- */
- ids_key = request_key(KRCC_KEY_TYPE_USER, KRCC_SPEC_IDS_KEYNAME, NULL, 0);
- if (ids_key < 0)
- goto out;
+done:
+ free(payload);
+ return kret;
+}
- DEBUG_PRINT(("krb5_krcc_get_ring_ids: processing '%s' key %d\n",
- KRCC_SPEC_IDS_KEYNAME, ids_key));
- /*
- * Read and parse the ids file
- */
- memset(ids_buf, '\0', sizeof(ids_buf));
- val = keyctl_read(ids_key, ids_buf, sizeof(ids_buf));
- if (val > sizeof(ids_buf))
- goto out;
+static krb5_error_code
+krb5_krcc_get_primary(krb5_context context, key_serial_t ring_id, char **name)
+{
+ krb5_error_code kret;
+ key_serial_t primary;
+ void *payload = NULL;
+ int payloadlen;
+ krb5_int32 version;
+
+ primary = keyctl_search(ring_id, KRCC_KEY_TYPE_USER,
+ KRCC_COLLECTION_PRIMARY, 0);
+ if (primary == -1) {
+ DEBUG_PRINT(("krb5_krcc_get_primary: No primary key available\n"));
+ *name = NULL;
+ return ENOENT;
+ }
+ payloadlen = keyctl_read_alloc(primary, &payload);
+ if (payloadlen == -1) {
+ DEBUG_PRINT(("krb5_krcc_get_primary: Error reading primary key\n"));
+ kret = EINVAL;
+ goto done;
+ }
- val = sscanf(ids_buf, "%d:%d:%d", &session, &process, &thread);
- if (val != 3)
- goto out;
+ kret = krb5_krcc_parse_index(context, &version, name, payload, payloadlen);
+ if (kret) {
+ DEBUG_PRINT(("krb5_krcc_get_primary: Error parsing primary key\n"));
+ goto done;
+ }
+
+ if (version != KRCC_COLLECTION_VERSION) {
+ DEBUG_PRINT(("krb5_krcc_get_primary: Invalid version\n"));
+ kret = EINVAL;
+ goto done;
+ }
- p->session = session;
- p->process = process;
- p->thread = thread;
+ DEBUG_PRINT(("krb5_krcc_get_primary: primary key %d, points to "
+ "keyring %s\n", primary, *name));
+ kret = KRB5_OK;
-out:
- DEBUG_PRINT(("krb5_krcc_get_ring_ids: returning %d:%d:%d\n",
- p->session, p->process, p->thread));
+done:
+ if (kret) {
+ krb5_krcc_destroy_primary(ring_id);
+ }
+ free(payload);
+ return kret;
+}
+
+static krb5_error_code
+krb5_krcc_get_keyring(krb5_context context, const char *full_residual,
+ char **name, krb5_boolean *subsidiary, key_serial_t *id)
+{
+ const char *residual;
+ krb5_error_code kret;
+ key_serial_t ring_id = 0;
+ key_serial_t cccol_id = 0;
+ char *p = NULL;
+ char *ccname = NULL;
+ krb5_boolean sub = FALSE;
+ key_serial_t parent;
+ enum krcc_keyring_type type;
+ long long int luid;
+ int len, ret;
+
+ if (KRCC_HAS_PROCESS_PREFIX(full_residual)) {
+ residual = full_residual + (sizeof(KRCC_PROCESS_PREFIX) - 1);
+ ring_id = KEY_SPEC_PROCESS_KEYRING;
+ type = KRCC_PROCESS;
+ } else if (KRCC_HAS_PERSIST_PREFIX(full_residual)) {
+ residual = full_residual + (sizeof(KRCC_PERSIST_PREFIX) - 1);
+ type = KRCC_PERSIST;
+ } else if (KRCC_HAS_USER_PREFIX(full_residual)) {
+ residual = full_residual + (sizeof(KRCC_USER_PREFIX) - 1);
+ ring_id = KEY_SPEC_USER_KEYRING;
+ type = KRCC_USER;
+ } else if (KRCC_HAS_SESSION_PREFIX(full_residual)) {
+ residual = full_residual + (sizeof(KRCC_SESSION_PREFIX) - 1);
+ ring_id = KEY_SPEC_SESSION_KEYRING;
+ type = KRCC_SESSION;
+ } else if (KRCC_HAS_THREAD_PREFIX(full_residual)) {
+ residual = full_residual + (sizeof(KRCC_THREAD_PREFIX) - 1);
+ ring_id = KEY_SPEC_THREAD_KEYRING;
+ type = KRCC_THREAD;
+ } else {
+ /* legacy backwards compat */
+ residual = full_residual;
+ ring_id = KEY_SPEC_SESSION_KEYRING;
+ type = KRCC_LEGACY_SESSION;
+ }
+
+ /* we are transforming classic KEYRING caches into collection enabled
+ * caches as well here, while maintaining compatibility with existing
+ * practices.
+ * We can't change semantics of the legacy session type as they may be
+ * shared between a new and an old version of the library. So for the
+ * legacy session keyring create the collection keyring using a prefixed
+ * residual name in order ro leave the original name free for the first
+ * ccache keyring which will be placed both in the collection keyring as
+ * well as linked directly in the session keyring. */
+ switch (type) {
+ case KRCC_LEGACY_SESSION:
+ case KRCC_THREAD:
+ case KRCC_PROCESS:
+ case KRCC_SESSION:
+ case KRCC_USER:
+ /* check if this is a plain name or includes a subsidiary */
+ p = strchr(residual, ':');
+ if (p) {
+ sub = TRUE;
+ len = p - residual;
+ } else {
+ len = strlen(residual);
+ }
+ ret = asprintf(&ccname, KRCC_CCCOL_PREFIX"%.*s", len, residual);
+ if (ret == -1 || !ccname) {
+ return ENOMEM;
+ }
+
+ cccol_id = keyctl_search(ring_id, KRCC_KEY_TYPE_KEYRING, ccname, 0);
+ if (cccol_id == -1) {
+ cccol_id = add_key(KRCC_KEY_TYPE_KEYRING,
+ ccname, NULL, 0, ring_id);
+ if (cccol_id == -1) {
+ kret = errno;
+ DEBUG_PRINT(("krb5_krcc_get_keyring: Couldn't create [%s] "
+ "keyring, error %d (%s)\n",
+ ccname, kret, strerror(kret)));
+ free(ccname);
+ return kret;
+ }
+ }
+ free(ccname);
+ ccname = NULL;
+ ring_id = cccol_id;
+ break;
+
+ case KRCC_PERSIST:
+
+ switch (residual[0]) {
+ case ':':
+ /* residual present */
+ sub = TRUE;
+ /* fall through */
+ case '\0':
+ /* no uid specified, use user's own */
+ luid = geteuid();
+ break;
+ default:
+ errno = 0;
+ luid = strtoll(residual, &p, 10);
+ if (errno)
+ return EINVAL;
+ if (*p == ':')
+ sub = TRUE;
+ else if ((p == residual) || (*p != 0))
+ return EINVAL;
+ }
+
+#ifdef HAVE_PERSISTENT_KEYRING
+ parent = keyctl_get_persistent(luid, KEY_SPEC_PROCESS_KEYRING);
+ if (parent == -1) {
+ /* if the kernel does not support persistent keyrings,
+ * fall back to a standard user key ring */
+ if (errno == ENOTSUP)
+ parent = KEY_SPEC_USER_KEYRING;
+ else
+ return errno;
+ }
+#else
+ parent = KEY_SPEC_USER_KEYRING;
+#endif
+ if ((parent == KEY_SPEC_USER_KEYRING) && (luid != geteuid()))
+ return EINVAL;
+ ring_id = keyctl_search(parent, KRCC_KEY_TYPE_KEYRING, "_krb", 0);
+ if (ring_id == -1) {
+ ring_id = add_key(KRCC_KEY_TYPE_KEYRING, "_krb", NULL, 0, parent);
+ if (ring_id == -1) {
+ kret = errno;
+ DEBUG_PRINT(("krb5_krcc_get_keyring: Couldn't create _krb "
+ "keyring for uid %ld, error %d (%s)\n",
+ (long)luid, kret, strerror(kret)));
+ return kret;
+ }
+ }
+ break;
+ }
+
+ /* if a subsidiary is specified just return */
+ if (sub == TRUE) {
+ *name = strdup(full_residual);
+ if (*name == NULL)
+ return ENOMEM;
+ goto done;
+ }
+
+ /* Check to see if we have an index key by chance, if we do get the
+ * ccache pointed by it */
+ kret = krb5_krcc_get_primary(context, ring_id, &ccname);
+ if (kret) {
+ DEBUG_PRINT(("krb5_krcc_get_keyring: Error reading primary key "
+ "from keyring %d: %s\n", ring_id, strerror(kret)));
+ }
+
+ /* for backwards compatibility the first session keyring must
+ * be named after the residual, for all other types put in an
+ * empty name, it will be replaced at initialization time */
+ if (type == KRCC_LEGACY_SESSION) {
+ if (!ccname) {
+ /* no primary yet */
+ *name = strdup(full_residual);
+ if (*name == NULL)
+ return ENOMEM;
+ } else {
+ *name = ccname;
+ goto done;
+ }
+ } else {
+ kret = asprintf(name, "%s:%s", full_residual, ccname ? ccname : "");
+ free(ccname);
+ if (kret == -1)
+ return ENOMEM;
+ }
+
+done:
+ if (subsidiary)
+ *subsidiary = sub;
+ *id = ring_id;
+ return KRB5_OK;
+}
+
+static krb5_error_code
+krb5_krcc_default_keyring(krb5_context context, krb5_boolean *subsidiary,
+ char **name, key_serial_t *id)
+{
+ const char *defname;
+
+ *subsidiary = FALSE;
+ if (name) *name = NULL;
+ *id = 0;
+
+ defname = krb5_cc_default_name(context);
+ if (!defname || strncmp(defname, "KEYRING:", 8) != 0) {
+ /* return classic session type with empty name so that a
+ * random name will actually be generate at initialization time */
+ return krb5_krcc_get_keyring(context, "", name, subsidiary, id);
+ }
+ return krb5_krcc_get_keyring(context, &defname[8], name, subsidiary, id);
+}
+
+static krb5_boolean
+krb5_krcc_check_legacy_session(key_serial_t ring_id, const char *residual,
+ char **ccache_name, key_serial_t *ccache_id)
+{
+ key_serial_t key;
+ char *name, *ep;
+
+ if (!KRCC_IS_LEGACY_SESSION(residual)) {
+ return FALSE;
+ }
+
+ /* a legacy session residual looks like this:
+ * <name>:<subsidiary> and we need <name> */
+ ep = strchr(residual, ':');
+ if (!ep) /* something weird, just ignore */
+ return FALSE;
+
+ name = strndup(residual, ep - residual);
+ if (!name) /* too bad */
+ return FALSE;
+
+ key = keyctl_search(ring_id, KRCC_KEY_TYPE_KEYRING, name, 0);
+ if (key == -1) {
+ free(name);
+ return FALSE;
+ }
+
+ *ccache_name = name;
+ *ccache_id = key;
+ return TRUE;
+}
+
+struct krcc_ptcursor_data {
+ key_serial_t ring_id;
+ char *name;
+ krb5_boolean first;
+ krb5_boolean subsidiary;
+ long num_keys;
+ long next_key;
+ key_serial_t *keys;
+};
+
+static krb5_error_code KRB5_CALLCONV
+krb5_krcc_ptcursor_new(krb5_context context, krb5_cc_ptcursor *cursor_out)
+{
+ struct krcc_ptcursor_data *data;
+ krb5_cc_ptcursor cursor = NULL;
+ krb5_error_code kret;
+ long size;
+
+ *cursor_out = NULL;
+
+ data = calloc(1, sizeof(struct krcc_ptcursor_data));
+ if (!data)
+ return ENOMEM;
+ cursor = malloc(sizeof(struct krb5_cc_ptcursor_s));
+ if (!cursor) {
+ free(data);
+ return ENOMEM;
+ }
+ cursor->ops = &krb5_krcc_ops;
+ cursor->data = data;
+ data->first = TRUE;
+ data->subsidiary = FALSE;
+
+ /* If a keyring cannot be found or the default cache is a subsidiary
+ * then return an empty data set with only the primary/subsidiary set
+ * as the cache name */
+ kret = krb5_krcc_default_keyring(context, &data->subsidiary,
+ &data->name, &data->ring_id);
+ if (kret || (data->ring_id == 0))
+ goto done;
+
+ size = keyctl_read_alloc(data->ring_id, (void **)&data->keys);
+ if (size == -1) {
+ kret = errno;
+ goto done;
+ }
+ data->num_keys = size / sizeof(key_serial_t);
+
+ kret = KRB5_OK;
+
+done:
+ if (kret) {
+ free(cursor->data);
+ free(cursor);
+ } else {
+ *cursor_out = cursor;
+ }
+ return kret;
+}
+
+static krb5_error_code KRB5_CALLCONV
+krb5_krcc_ptcursor_next(krb5_context context, krb5_cc_ptcursor cursor,
+ krb5_ccache *cache_out)
+{
+ struct krcc_ptcursor_data *data;
+ key_serial_t ccache_id;
+ krb5_error_code kret;
+ const char *first_name;
+ const char *pref;
+ const char *type;
+ size_t preflen;
+ size_t typelen;
+ char *description = NULL;
+ char *residual;
+ char *name;
+ long cur_key;
+ long res;
+
+ *cache_out = NULL;
+
+ data = cursor->data;
+
+ /* No keyring available */
+ if (data->ring_id == 0)
+ return 0;
+
+ /* if no cccol is available name will be set to "" for compatibility
+ * with legacy session keyrings. Return 0 in this case as we do not
+ * want to try to enumerate all keys in the general session keyring */
+ if (data->name[0] == '\0')
+ return 0;
+
+ /* if we already returned the named subsidiary just stop */
+ if (data->subsidiary && !data->first)
+ return 0;
+
+ first_name = krb5_krcc_get_ring_name(data->name);
+
+ if (data->first && first_name[0] != '\0') {
+ /* first call in, search for a key matching data->name
+ * which is the primary or the named subsidiary */
+ pref = first_name;
+ } else {
+ /* there is no first if the subsidiary is present but empty, this
+ * happens when the default ccache is not of type KEYRING and a
+ * program explicitly enumerates all cache collections */
+ data->first = FALSE;
+ pref = KRCC_NAME_PREFIX;
+ }
+ preflen = strlen(pref);
+
+ type = KRCC_KEY_TYPE_KEYRING ";";
+ typelen = strlen(type);
+
+ for (cur_key = data->next_key; cur_key < data->num_keys; cur_key++) {
+ /* free any previously returned description */
+ free(description);
+ description = NULL;
+
+ res = keyctl_describe_alloc(data->keys[cur_key], &description);
+ if (res == -1) {
+ DEBUG_PRINT(("krb5_krcc_ptcursor_next: Failed to get keyring "
+ "description for %ld\n", data->keys[cur_key]));
+ /* try the next */
+ continue;
+ }
+
+ name = strrchr(description, ';');
+ if (!name) {
+ DEBUG_PRINT(("krb5_krcc_ptcursor_next: Keyring (%ld) description"
+ " [%s] has unknown format (no ';')!\n",
+ data->keys[cur_key], description));
+ /* try the next */
+ continue;
+ }
+ name++;
+
+ if (strncmp(type, description, typelen) != 0) {
+ /* not a keyring, just skip */
+ continue;
+ }
+
+ if (strncmp(pref, name, preflen) == 0) {
+ /* found, but skip primary if not first */
+ if (!data->first) {
+ if (strcmp(first_name, name) == 0)
+ continue;
+ }
+
+ /* a valid one */
+ ccache_id = data->keys[cur_key];
+ break;
+ }
+ }
+
+ if (cur_key >= data->num_keys) {
+ /* nothing found */
+ free(description);
+
+ if (!krb5_krcc_check_legacy_session(data->ring_id, data->name,
+ &name, &ccache_id))
+ return 0;
+
+ /* legacy session and found original cache, point description at name
+ *so that name will be properly freed later on */
+ description = name;
+ }
+
+ if (data->first) {
+ /* we searched for the primary/subsidiary,
+ * reset for the following searches */
+ data->first = FALSE;
+ } else {
+ data->next_key = cur_key + 1;
+ }
+
+ residual = krb5_krcc_new_residual(data->name, name);
+ free(description); /* we don't need 'name' anymore */
+ if (!residual)
+ return ENOMEM;
+
+ kret = krb5_krcc_resolve_internal(data->ring_id, ccache_id,
+ residual, cache_out);
+
+ free(residual);
+ return kret;
+}
+
+static krb5_error_code KRB5_CALLCONV
+krb5_krcc_ptcursor_free(krb5_context context, krb5_cc_ptcursor *cursor)
+{
+ struct krcc_ptcursor_data *data = (*cursor)->data;
+
+ if (data) {
+ free(data->name);
+ free(data->keys);
+ free(data);
+ }
+ (*cursor)->data = NULL;
+ free(*cursor);
+ *cursor = NULL;
return 0;
}
+static krb5_error_code KRB5_CALLCONV
+krb5_krcc_switch_to(krb5_context context, krb5_ccache cache)
+{
+ krb5_krcc_data *data = cache->data;
+ krb5_error_code kret;
+ const char *ring_name;
+
+ ring_name = krb5_krcc_get_ring_name(data->name);
+ kret = krb5_krcc_set_primary(context, ring_name, data->parent_id);
+ return kret;
+}
+
/*
* ===============================================================
* INTERNAL functions to parse a credential from a key payload
@@ -1271,8 +2011,8 @@ out:
* KRB5_CC_END - there were not len bytes available
*/
static krb5_error_code
-krb5_krcc_parse(krb5_context context, krb5_ccache id, krb5_pointer buf,
- unsigned int len, krb5_krcc_bc * bc)
+krb5_krcc_parse(krb5_context context, krb5_pointer buf, unsigned int len,
+ krb5_krcc_bc * bc)
{
DEBUG_PRINT(("krb5_krcc_parse: entered\n"));
@@ -1290,8 +2030,8 @@ krb5_krcc_parse(krb5_context context, krb5_ccache id, krb5_pointer buf,
* and parse it into a credential structure.
*/
static krb5_error_code
-krb5_krcc_parse_cred(krb5_context context, krb5_ccache id, krb5_creds * creds,
- char *payload, int psize)
+krb5_krcc_parse_cred(krb5_context context, krb5_creds * creds, char *payload,
+ int psize)
{
krb5_error_code kret;
krb5_octet octet;
@@ -1301,36 +2041,36 @@ krb5_krcc_parse_cred(krb5_context context, krb5_ccache id, krb5_creds * creds,
/* Parse the pieces of the credential */
bc.bpp = payload;
bc.endp = bc.bpp + psize;
- kret = krb5_krcc_parse_principal(context, id, &creds->client, &bc);
+ kret = krb5_krcc_parse_principal(context, &creds->client, &bc);
CHECK_N_GO(kret, out);
- kret = krb5_krcc_parse_principal(context, id, &creds->server, &bc);
+ kret = krb5_krcc_parse_principal(context, &creds->server, &bc);
CHECK_N_GO(kret, cleanclient);
- kret = krb5_krcc_parse_keyblock(context, id, &creds->keyblock, &bc);
+ kret = krb5_krcc_parse_keyblock(context, &creds->keyblock, &bc);
CHECK_N_GO(kret, cleanserver);
- kret = krb5_krcc_parse_times(context, id, &creds->times, &bc);
+ kret = krb5_krcc_parse_times(context, &creds->times, &bc);
CHECK_N_GO(kret, cleanserver);
- kret = krb5_krcc_parse_octet(context, id, &octet, &bc);
+ kret = krb5_krcc_parse_octet(context, &octet, &bc);
CHECK_N_GO(kret, cleanserver);
creds->is_skey = octet;
- kret = krb5_krcc_parse_int32(context, id, &int32, &bc);
+ kret = krb5_krcc_parse_int32(context, &int32, &bc);
CHECK_N_GO(kret, cleanserver);
creds->ticket_flags = int32;
- kret = krb5_krcc_parse_addrs(context, id, &creds->addresses, &bc);
+ kret = krb5_krcc_parse_addrs(context, &creds->addresses, &bc);
CHECK_N_GO(kret, cleanblock);
- kret = krb5_krcc_parse_authdata(context, id, &creds->authdata, &bc);
+ kret = krb5_krcc_parse_authdata(context, &creds->authdata, &bc);
CHECK_N_GO(kret, cleanaddrs);
- kret = krb5_krcc_parse_krb5data(context, id, &creds->ticket, &bc);
+ kret = krb5_krcc_parse_krb5data(context, &creds->ticket, &bc);
CHECK_N_GO(kret, cleanauthdata);
- kret = krb5_krcc_parse_krb5data(context, id, &creds->second_ticket, &bc);
+ kret = krb5_krcc_parse_krb5data(context, &creds->second_ticket, &bc);
CHECK_N_GO(kret, cleanticket);
kret = KRB5_OK;
@@ -1355,8 +2095,8 @@ out:
}
static krb5_error_code
-krb5_krcc_parse_principal(krb5_context context, krb5_ccache id,
- krb5_principal * princ, krb5_krcc_bc * bc)
+krb5_krcc_parse_principal(krb5_context context, krb5_principal * princ,
+ krb5_krcc_bc * bc)
{
krb5_error_code kret;
register krb5_principal tmpprinc;
@@ -1364,12 +2104,12 @@ krb5_krcc_parse_principal(krb5_context context, krb5_ccache id,
int i;
/* Read principal type */
- kret = krb5_krcc_parse_int32(context, id, &type, bc);
+ kret = krb5_krcc_parse_int32(context, &type, bc);
if (kret != KRB5_OK)
return kret;
/* Read the number of components */
- kret = krb5_krcc_parse_int32(context, id, &length, bc);
+ kret = krb5_krcc_parse_int32(context, &length, bc);
if (kret != KRB5_OK)
return kret;
@@ -1380,12 +2120,7 @@ krb5_krcc_parse_principal(krb5_context context, krb5_ccache id,
if (tmpprinc == NULL)
return KRB5_CC_NOMEM;
if (length) {
- size_t msize = length;
- if (msize != length) {
- free(tmpprinc);
- return KRB5_CC_NOMEM;
- }
- tmpprinc->data = ALLOC(msize, krb5_data);
+ tmpprinc->data = calloc(length, sizeof(krb5_data));
if (tmpprinc->data == 0) {
free(tmpprinc);
return KRB5_CC_NOMEM;
@@ -1396,15 +2131,12 @@ krb5_krcc_parse_principal(krb5_context context, krb5_ccache id,
tmpprinc->length = length;
tmpprinc->type = type;
- kret = krb5_krcc_parse_krb5data(context, id,
- krb5_princ_realm(context, tmpprinc), bc);
+ kret = krb5_krcc_parse_krb5data(context, &tmpprinc->realm, bc);
i = 0;
CHECK(kret);
for (i = 0; i < length; i++) {
- kret = krb5_krcc_parse_krb5data(context, id,
- krb5_princ_component(context, tmpprinc,
- i), bc);
+ kret = krb5_krcc_parse_krb5data(context, &tmpprinc->data[i], bc);
CHECK(kret);
}
*princ = tmpprinc;
@@ -1412,16 +2144,16 @@ krb5_krcc_parse_principal(krb5_context context, krb5_ccache id,
errout:
while (--i >= 0)
- free(krb5_princ_component(context, tmpprinc, i)->data);
- free(krb5_princ_realm(context, tmpprinc)->data);
+ free(tmpprinc->data[i].data);
+ free(tmpprinc->realm.data);
free(tmpprinc->data);
free(tmpprinc);
return kret;
}
static krb5_error_code
-krb5_krcc_parse_keyblock(krb5_context context, krb5_ccache id,
- krb5_keyblock * keyblock, krb5_krcc_bc * bc)
+krb5_krcc_parse_keyblock(krb5_context context, krb5_keyblock * keyblock,
+ krb5_krcc_bc * bc)
{
krb5_error_code kret;
krb5_ui_2 ui2;
@@ -1430,26 +2162,22 @@ krb5_krcc_parse_keyblock(krb5_context context, krb5_ccache id,
keyblock->magic = KV5M_KEYBLOCK;
keyblock->contents = 0;
- kret = krb5_krcc_parse_ui_2(context, id, &ui2, bc);
+ kret = krb5_krcc_parse_ui_2(context, &ui2, bc);
CHECK(kret);
keyblock->enctype = ui2;
- kret = krb5_krcc_parse_int32(context, id, &int32, bc);
+ kret = krb5_krcc_parse_int32(context, &int32, bc);
CHECK(kret);
if (int32 < 0)
return KRB5_CC_NOMEM;
keyblock->length = int32;
- /* Overflow check. */
- if (keyblock->length != int32)
- return KRB5_CC_NOMEM;
if (keyblock->length == 0)
return KRB5_OK;
- keyblock->contents = ALLOC(keyblock->length, krb5_octet);
+ keyblock->contents = malloc(keyblock->length);
if (keyblock->contents == NULL)
return KRB5_CC_NOMEM;
- kret = krb5_krcc_parse(context, id, keyblock->contents,
- keyblock->length, bc);
+ kret = krb5_krcc_parse(context, keyblock->contents, keyblock->length, bc);
CHECK(kret);
return KRB5_OK;
@@ -1460,25 +2188,25 @@ errout:
}
static krb5_error_code
-krb5_krcc_parse_times(krb5_context context, krb5_ccache id,
- krb5_ticket_times * t, krb5_krcc_bc * bc)
+krb5_krcc_parse_times(krb5_context context, krb5_ticket_times * t,
+ krb5_krcc_bc * bc)
{
krb5_error_code kret;
krb5_int32 i;
- kret = krb5_krcc_parse_int32(context, id, &i, bc);
+ kret = krb5_krcc_parse_int32(context, &i, bc);
CHECK(kret);
t->authtime = i;
- kret = krb5_krcc_parse_int32(context, id, &i, bc);
+ kret = krb5_krcc_parse_int32(context, &i, bc);
CHECK(kret);
t->starttime = i;
- kret = krb5_krcc_parse_int32(context, id, &i, bc);
+ kret = krb5_krcc_parse_int32(context, &i, bc);
CHECK(kret);
t->endtime = i;
- kret = krb5_krcc_parse_int32(context, id, &i, bc);
+ kret = krb5_krcc_parse_int32(context, &i, bc);
CHECK(kret);
t->renew_till = i;
@@ -1488,8 +2216,8 @@ errout:
}
static krb5_error_code
-krb5_krcc_parse_krb5data(krb5_context context, krb5_ccache id,
- krb5_data * data, krb5_krcc_bc * bc)
+krb5_krcc_parse_krb5data(krb5_context context, krb5_data * data,
+ krb5_krcc_bc * bc)
{
krb5_error_code kret;
krb5_int32 len;
@@ -1497,12 +2225,12 @@ krb5_krcc_parse_krb5data(krb5_context context, krb5_ccache id,
data->magic = KV5M_DATA;
data->data = 0;
- kret = krb5_krcc_parse_int32(context, id, &len, bc);
+ kret = krb5_krcc_parse_int32(context, &len, bc);
CHECK(kret);
if (len < 0)
return KRB5_CC_NOMEM;
data->length = len;
- if (data->length != len || data->length + 1 == 0)
+ if (data->length + 1 == 0)
return KRB5_CC_NOMEM;
if (data->length == 0) {
@@ -1514,8 +2242,7 @@ krb5_krcc_parse_krb5data(krb5_context context, krb5_ccache id,
if (data->data == NULL)
return KRB5_CC_NOMEM;
- kret = krb5_krcc_parse(context, id, data->data, (unsigned) data->length,
- bc);
+ kret = krb5_krcc_parse(context, data->data, (unsigned) data->length, bc);
CHECK(kret);
data->data[data->length] = 0; /* Null terminate, just in case.... */
@@ -1527,13 +2254,12 @@ errout:
}
static krb5_error_code
-krb5_krcc_parse_int32(krb5_context context, krb5_ccache id, krb5_int32 * i,
- krb5_krcc_bc * bc)
+krb5_krcc_parse_int32(krb5_context context, krb5_int32 * i, krb5_krcc_bc * bc)
{
krb5_error_code kret;
unsigned char buf[4];
- kret = krb5_krcc_parse(context, id, buf, 4, bc);
+ kret = krb5_krcc_parse(context, buf, 4, bc);
if (kret)
return kret;
*i = load_32_be(buf);
@@ -1541,15 +2267,14 @@ krb5_krcc_parse_int32(krb5_context context, krb5_ccache id, krb5_int32 * i,
}
static krb5_error_code
-krb5_krcc_parse_octet(krb5_context context, krb5_ccache id, krb5_octet * i,
- krb5_krcc_bc * bc)
+krb5_krcc_parse_octet(krb5_context context, krb5_octet * i, krb5_krcc_bc * bc)
{
- return krb5_krcc_parse(context, id, (krb5_pointer) i, 1, bc);
+ return krb5_krcc_parse(context, (krb5_pointer) i, 1, bc);
}
static krb5_error_code
-krb5_krcc_parse_addrs(krb5_context context, krb5_ccache id,
- krb5_address *** addrs, krb5_krcc_bc * bc)
+krb5_krcc_parse_addrs(krb5_context context, krb5_address *** addrs,
+ krb5_krcc_bc * bc)
{
krb5_error_code kret;
krb5_int32 length;
@@ -1559,18 +2284,17 @@ krb5_krcc_parse_addrs(krb5_context context, krb5_ccache id,
*addrs = 0;
/* Read the number of components */
- kret = krb5_krcc_parse_int32(context, id, &length, bc);
+ kret = krb5_krcc_parse_int32(context, &length, bc);
CHECK(kret);
/*
* Make *addrs able to hold length pointers to krb5_address structs
* Add one extra for a null-terminated list
*/
- msize = length;
- msize += 1;
- if (msize == 0 || msize - 1 != length || length < 0)
+ msize = (size_t)length + 1;
+ if (msize == 0 || length < 0)
return KRB5_CC_NOMEM;
- *addrs = ALLOC(msize, krb5_address *);
+ *addrs = calloc(msize, sizeof(krb5_address *));
if (*addrs == NULL)
return KRB5_CC_NOMEM;
@@ -1580,7 +2304,7 @@ krb5_krcc_parse_addrs(krb5_context context, krb5_ccache id,
krb5_free_addresses(context, *addrs);
return KRB5_CC_NOMEM;
}
- kret = krb5_krcc_parse_addr(context, id, (*addrs)[i], bc);
+ kret = krb5_krcc_parse_addr(context, (*addrs)[i], bc);
CHECK(kret);
}
@@ -1592,7 +2316,7 @@ errout:
}
static krb5_error_code
-krb5_krcc_parse_addr(krb5_context context, krb5_ccache id, krb5_address * addr,
+krb5_krcc_parse_addr(krb5_context context, krb5_address * addr,
krb5_krcc_bc * bc)
{
krb5_error_code kret;
@@ -1602,22 +2326,15 @@ krb5_krcc_parse_addr(krb5_context context, krb5_ccache id, krb5_address * addr,
addr->magic = KV5M_ADDRESS;
addr->contents = 0;
- kret = krb5_krcc_parse_ui_2(context, id, &ui2, bc);
+ kret = krb5_krcc_parse_ui_2(context, &ui2, bc);
CHECK(kret);
addr->addrtype = ui2;
- kret = krb5_krcc_parse_int32(context, id, &int32, bc);
+ kret = krb5_krcc_parse_int32(context, &int32, bc);
CHECK(kret);
if ((int32 & VALID_INT_BITS) != int32) /* Overflow int??? */
return KRB5_CC_NOMEM;
addr->length = int32;
- /*
- * Length field is "unsigned int", which may be smaller
- * than 32 bits.
- */
- if (addr->length != int32)
- return KRB5_CC_NOMEM; /* XXX */
-
if (addr->length == 0)
return KRB5_OK;
@@ -1625,7 +2342,7 @@ krb5_krcc_parse_addr(krb5_context context, krb5_ccache id, krb5_address * addr,
if (addr->contents == NULL)
return KRB5_CC_NOMEM;
- kret = krb5_krcc_parse(context, id, addr->contents, addr->length, bc);
+ kret = krb5_krcc_parse(context, addr->contents, addr->length, bc);
CHECK(kret);
return KRB5_OK;
@@ -1636,8 +2353,8 @@ errout:
}
static krb5_error_code
-krb5_krcc_parse_authdata(krb5_context context, krb5_ccache id,
- krb5_authdata *** a, krb5_krcc_bc * bc)
+krb5_krcc_parse_authdata(krb5_context context, krb5_authdata *** a,
+ krb5_krcc_bc * bc)
{
krb5_error_code kret;
krb5_int32 length;
@@ -1647,7 +2364,7 @@ krb5_krcc_parse_authdata(krb5_context context, krb5_ccache id,
*a = 0;
/* Read the number of components */
- kret = krb5_krcc_parse_int32(context, id, &length, bc);
+ kret = krb5_krcc_parse_int32(context, &length, bc);
CHECK(kret);
if (length == 0)
@@ -1657,11 +2374,10 @@ krb5_krcc_parse_authdata(krb5_context context, krb5_ccache id,
* Make *a able to hold length pointers to krb5_authdata structs
* Add one extra for a null-terminated list
*/
- msize = length;
- msize += 1;
- if (msize == 0 || msize - 1 != length || length < 0)
+ msize = (size_t)length + 1;
+ if (msize == 0 || length < 0)
return KRB5_CC_NOMEM;
- *a = ALLOC(msize, krb5_authdata *);
+ *a = calloc(msize, sizeof(krb5_authdata *));
if (*a == NULL)
return KRB5_CC_NOMEM;
@@ -1672,7 +2388,7 @@ krb5_krcc_parse_authdata(krb5_context context, krb5_ccache id,
*a = NULL;
return KRB5_CC_NOMEM;
}
- kret = krb5_krcc_parse_authdatum(context, id, (*a)[i], bc);
+ kret = krb5_krcc_parse_authdatum(context, (*a)[i], bc);
CHECK(kret);
}
@@ -1686,8 +2402,8 @@ errout:
}
static krb5_error_code
-krb5_krcc_parse_authdatum(krb5_context context, krb5_ccache id,
- krb5_authdata * a, krb5_krcc_bc * bc)
+krb5_krcc_parse_authdatum(krb5_context context, krb5_authdata * a,
+ krb5_krcc_bc * bc)
{
krb5_error_code kret;
krb5_int32 int32;
@@ -1696,21 +2412,14 @@ krb5_krcc_parse_authdatum(krb5_context context, krb5_ccache id,
a->magic = KV5M_AUTHDATA;
a->contents = NULL;
- kret = krb5_krcc_parse_ui_2(context, id, &ui2, bc);
+ kret = krb5_krcc_parse_ui_2(context, &ui2, bc);
CHECK(kret);
a->ad_type = (krb5_authdatatype) ui2;
- kret = krb5_krcc_parse_int32(context, id, &int32, bc);
+ kret = krb5_krcc_parse_int32(context, &int32, bc);
CHECK(kret);
if ((int32 & VALID_INT_BITS) != int32) /* Overflow int??? */
return KRB5_CC_NOMEM;
a->length = int32;
- /*
- * Value could have gotten truncated if int is
- * smaller than 32 bits.
- */
- if (a->length != int32)
- return KRB5_CC_NOMEM; /* XXX */
-
if (a->length == 0)
return KRB5_OK;
@@ -1718,7 +2427,7 @@ krb5_krcc_parse_authdatum(krb5_context context, krb5_ccache id,
if (a->contents == NULL)
return KRB5_CC_NOMEM;
- kret = krb5_krcc_parse(context, id, a->contents, a->length, bc);
+ kret = krb5_krcc_parse(context, a->contents, a->length, bc);
CHECK(kret);
return KRB5_OK;
@@ -1730,13 +2439,12 @@ errout:
}
static krb5_error_code
-krb5_krcc_parse_ui_2(krb5_context context, krb5_ccache id, krb5_ui_2 * i,
- krb5_krcc_bc * bc)
+krb5_krcc_parse_ui_2(krb5_context context, krb5_ui_2 * i, krb5_krcc_bc * bc)
{
krb5_error_code kret;
unsigned char buf[2];
- kret = krb5_krcc_parse(context, id, buf, 2, bc);
+ kret = krb5_krcc_parse(context, buf, 2, bc);
if (kret)
return kret;
*i = load_16_be(buf);
@@ -1756,9 +2464,15 @@ krb5_krcc_parse_ui_2(krb5_context context, krb5_ccache id, krb5_ui_2 * i,
* system errors
*/
static krb5_error_code
-krb5_krcc_unparse(krb5_context context, krb5_ccache id, krb5_pointer buf,
- unsigned int len, krb5_krcc_bc * bc)
+krb5_krcc_unparse(krb5_context context, krb5_pointer buf, unsigned int len,
+ krb5_krcc_bc * bc)
{
+ if (bc->bpp == NULL) {
+ /* This is a dry run; just increase size and return. */
+ bc->size += len;
+ return KRB5_OK;
+ }
+
if (bc->bpp + len > bc->endp)
return KRB5_CC_WRITE;
@@ -1769,29 +2483,26 @@ krb5_krcc_unparse(krb5_context context, krb5_ccache id, krb5_pointer buf,
}
static krb5_error_code
-krb5_krcc_unparse_principal(krb5_context context, krb5_ccache id,
- krb5_principal princ, krb5_krcc_bc * bc)
+krb5_krcc_unparse_principal(krb5_context context, krb5_principal princ,
+ krb5_krcc_bc * bc)
{
krb5_error_code kret;
krb5_int32 i, length, tmp, type;
- type = krb5_princ_type(context, princ);
- tmp = length = krb5_princ_size(context, princ);
+ type = princ->type;
+ tmp = length = princ->length;
- kret = krb5_krcc_unparse_int32(context, id, type, bc);
+ kret = krb5_krcc_unparse_int32(context, type, bc);
CHECK_OUT(kret);
- kret = krb5_krcc_unparse_int32(context, id, tmp, bc);
+ kret = krb5_krcc_unparse_int32(context, tmp, bc);
CHECK_OUT(kret);
- kret = krb5_krcc_unparse_krb5data(context, id,
- krb5_princ_realm(context, princ), bc);
+ kret = krb5_krcc_unparse_krb5data(context, &princ->realm, bc);
CHECK_OUT(kret);
for (i = 0; i < length; i++) {
- kret = krb5_krcc_unparse_krb5data(context, id,
- krb5_princ_component(context, princ,
- i), bc);
+ kret = krb5_krcc_unparse_krb5data(context, &princ->data[i], bc);
CHECK_OUT(kret);
}
@@ -1799,67 +2510,65 @@ krb5_krcc_unparse_principal(krb5_context context, krb5_ccache id,
}
static krb5_error_code
-krb5_krcc_unparse_keyblock(krb5_context context, krb5_ccache id,
- krb5_keyblock * keyblock, krb5_krcc_bc * bc)
+krb5_krcc_unparse_keyblock(krb5_context context, krb5_keyblock * keyblock,
+ krb5_krcc_bc * bc)
{
krb5_error_code kret;
- kret = krb5_krcc_unparse_ui_2(context, id, keyblock->enctype, bc);
+ kret = krb5_krcc_unparse_ui_2(context, keyblock->enctype, bc);
CHECK_OUT(kret);
- kret = krb5_krcc_unparse_ui_4(context, id, keyblock->length, bc);
+ kret = krb5_krcc_unparse_ui_4(context, keyblock->length, bc);
CHECK_OUT(kret);
- return krb5_krcc_unparse(context, id, (char *) keyblock->contents,
+ return krb5_krcc_unparse(context, (char *) keyblock->contents,
keyblock->length, bc);
}
static krb5_error_code
-krb5_krcc_unparse_times(krb5_context context, krb5_ccache id,
- krb5_ticket_times * t, krb5_krcc_bc * bc)
+krb5_krcc_unparse_times(krb5_context context, krb5_ticket_times * t,
+ krb5_krcc_bc * bc)
{
krb5_error_code kret;
- kret = krb5_krcc_unparse_int32(context, id, t->authtime, bc);
+ kret = krb5_krcc_unparse_int32(context, t->authtime, bc);
CHECK_OUT(kret);
- kret = krb5_krcc_unparse_int32(context, id, t->starttime, bc);
+ kret = krb5_krcc_unparse_int32(context, t->starttime, bc);
CHECK_OUT(kret);
- kret = krb5_krcc_unparse_int32(context, id, t->endtime, bc);
+ kret = krb5_krcc_unparse_int32(context, t->endtime, bc);
CHECK_OUT(kret);
- kret = krb5_krcc_unparse_int32(context, id, t->renew_till, bc);
+ kret = krb5_krcc_unparse_int32(context, t->renew_till, bc);
CHECK_OUT(kret);
return 0;
}
static krb5_error_code
-krb5_krcc_unparse_krb5data(krb5_context context, krb5_ccache id,
- krb5_data * data, krb5_krcc_bc * bc)
+krb5_krcc_unparse_krb5data(krb5_context context, krb5_data * data,
+ krb5_krcc_bc * bc)
{
krb5_error_code kret;
- kret = krb5_krcc_unparse_ui_4(context, id, data->length, bc);
+ kret = krb5_krcc_unparse_ui_4(context, data->length, bc);
CHECK_OUT(kret);
- return krb5_krcc_unparse(context, id, data->data, data->length, bc);
+ return krb5_krcc_unparse(context, data->data, data->length, bc);
}
static krb5_error_code
-krb5_krcc_unparse_int32(krb5_context context, krb5_ccache id, krb5_int32 i,
- krb5_krcc_bc * bc)
+krb5_krcc_unparse_int32(krb5_context context, krb5_int32 i, krb5_krcc_bc * bc)
{
- return krb5_krcc_unparse_ui_4(context, id, (krb5_ui_4) i, bc);
+ return krb5_krcc_unparse_ui_4(context, (krb5_ui_4) i, bc);
}
static krb5_error_code
-krb5_krcc_unparse_octet(krb5_context context, krb5_ccache id, krb5_int32 i,
- krb5_krcc_bc * bc)
+krb5_krcc_unparse_octet(krb5_context context, krb5_int32 i, krb5_krcc_bc * bc)
{
krb5_octet ibuf;
ibuf = (krb5_octet) i;
- return krb5_krcc_unparse(context, id, (char *) &ibuf, 1, bc);
+ return krb5_krcc_unparse(context, (char *) &ibuf, 1, bc);
}
static krb5_error_code
-krb5_krcc_unparse_addrs(krb5_context context, krb5_ccache id,
- krb5_address ** addrs, krb5_krcc_bc * bc)
+krb5_krcc_unparse_addrs(krb5_context context, krb5_address ** addrs,
+ krb5_krcc_bc * bc)
{
krb5_error_code kret;
krb5_address **temp;
@@ -1872,10 +2581,10 @@ krb5_krcc_unparse_addrs(krb5_context context, krb5_ccache id,
length += 1;
}
- kret = krb5_krcc_unparse_int32(context, id, length, bc);
+ kret = krb5_krcc_unparse_int32(context, length, bc);
CHECK_OUT(kret);
for (i = 0; i < length; i++) {
- kret = krb5_krcc_unparse_addr(context, id, addrs[i], bc);
+ kret = krb5_krcc_unparse_addr(context, addrs[i], bc);
CHECK_OUT(kret);
}
@@ -1883,21 +2592,21 @@ krb5_krcc_unparse_addrs(krb5_context context, krb5_ccache id,
}
static krb5_error_code
-krb5_krcc_unparse_addr(krb5_context context, krb5_ccache id,
- krb5_address * addr, krb5_krcc_bc * bc)
+krb5_krcc_unparse_addr(krb5_context context, krb5_address * addr,
+ krb5_krcc_bc * bc)
{
krb5_error_code kret;
- kret = krb5_krcc_unparse_ui_2(context, id, addr->addrtype, bc);
+ kret = krb5_krcc_unparse_ui_2(context, addr->addrtype, bc);
CHECK_OUT(kret);
- kret = krb5_krcc_unparse_ui_4(context, id, addr->length, bc);
+ kret = krb5_krcc_unparse_ui_4(context, addr->length, bc);
CHECK_OUT(kret);
- return krb5_krcc_unparse(context, id, (char *) addr->contents,
+ return krb5_krcc_unparse(context, (char *) addr->contents,
addr->length, bc);
}
static krb5_error_code
-krb5_krcc_unparse_authdata(krb5_context context, krb5_ccache id,
+krb5_krcc_unparse_authdata(krb5_context context,
krb5_authdata ** a, krb5_krcc_bc * bc)
{
krb5_error_code kret;
@@ -1909,47 +2618,45 @@ krb5_krcc_unparse_authdata(krb5_context context, krb5_ccache id,
length++;
}
- kret = krb5_krcc_unparse_int32(context, id, length, bc);
+ kret = krb5_krcc_unparse_int32(context, length, bc);
CHECK_OUT(kret);
for (i = 0; i < length; i++) {
- kret = krb5_krcc_unparse_authdatum(context, id, a[i], bc);
+ kret = krb5_krcc_unparse_authdatum(context, a[i], bc);
CHECK_OUT(kret);
}
return KRB5_OK;
}
static krb5_error_code
-krb5_krcc_unparse_authdatum(krb5_context context, krb5_ccache id,
- krb5_authdata * a, krb5_krcc_bc * bc)
+krb5_krcc_unparse_authdatum(krb5_context context, krb5_authdata * a,
+ krb5_krcc_bc * bc)
{
krb5_error_code kret;
- kret = krb5_krcc_unparse_ui_2(context, id, a->ad_type, bc);
+ kret = krb5_krcc_unparse_ui_2(context, a->ad_type, bc);
CHECK_OUT(kret);
- kret = krb5_krcc_unparse_ui_4(context, id, a->length, bc);
+ kret = krb5_krcc_unparse_ui_4(context, a->length, bc);
CHECK_OUT(kret);
- return krb5_krcc_unparse(context, id, (krb5_pointer) a->contents,
+ return krb5_krcc_unparse(context, (krb5_pointer) a->contents,
a->length, bc);
}
static krb5_error_code
-krb5_krcc_unparse_ui_4(krb5_context context, krb5_ccache id, krb5_ui_4 i,
- krb5_krcc_bc * bc)
+krb5_krcc_unparse_ui_4(krb5_context context, krb5_ui_4 i, krb5_krcc_bc * bc)
{
unsigned char buf[4];
store_32_be(i, buf);
- return krb5_krcc_unparse(context, id, buf, 4, bc);
+ return krb5_krcc_unparse(context, buf, 4, bc);
}
static krb5_error_code
-krb5_krcc_unparse_ui_2(krb5_context context, krb5_ccache id, krb5_int32 i,
- krb5_krcc_bc * bc)
+krb5_krcc_unparse_ui_2(krb5_context context, krb5_int32 i, krb5_krcc_bc * bc)
{
unsigned char buf[2];
store_16_be(i, buf);
- return krb5_krcc_unparse(context, id, buf, 2, bc);
+ return krb5_krcc_unparse(context, buf, 2, bc);
}
/*
@@ -1965,11 +2672,55 @@ krb5_krcc_unparse_ui_2(krb5_context context, krb5_ccache id, krb5_int32 i,
* Caller is responsible for freeing returned buffer.
*/
static krb5_error_code
-krb5_krcc_unparse_cred(krb5_context context, krb5_ccache id,
- krb5_creds * creds, char **datapp, unsigned int *lenptr)
+krb5_krcc_unparse_cred(krb5_context context, krb5_creds * creds,
+ krb5_krcc_bc *bc)
{
krb5_error_code kret;
- char *buf;
+
+ kret = krb5_krcc_unparse_principal(context, creds->client, bc);
+ CHECK_OUT(kret);
+
+ kret = krb5_krcc_unparse_principal(context, creds->server, bc);
+ CHECK_OUT(kret);
+
+ kret = krb5_krcc_unparse_keyblock(context, &creds->keyblock, bc);
+ CHECK_OUT(kret);
+
+ kret = krb5_krcc_unparse_times(context, &creds->times, bc);
+ CHECK_OUT(kret);
+
+ kret = krb5_krcc_unparse_octet(context, (krb5_int32) creds->is_skey, bc);
+ CHECK_OUT(kret);
+
+ kret = krb5_krcc_unparse_int32(context, creds->ticket_flags, bc);
+ CHECK_OUT(kret);
+
+ kret = krb5_krcc_unparse_addrs(context, creds->addresses, bc);
+ CHECK_OUT(kret);
+
+ kret = krb5_krcc_unparse_authdata(context, creds->authdata, bc);
+ CHECK_OUT(kret);
+
+ kret = krb5_krcc_unparse_krb5data(context, &creds->ticket, bc);
+ CHECK_OUT(kret);
+ CHECK(kret);
+
+ kret = krb5_krcc_unparse_krb5data(context, &creds->second_ticket, bc);
+ CHECK_OUT(kret);
+
+ /* Success! */
+ kret = KRB5_OK;
+
+errout:
+ return kret;
+}
+
+static krb5_error_code
+krb5_krcc_unparse_cred_alloc(krb5_context context, krb5_creds * creds,
+ char **datapp, unsigned int *lenptr)
+{
+ krb5_error_code kret;
+ char *buf = NULL;
krb5_krcc_bc bc;
if (!creds || !datapp || !lenptr)
@@ -1978,43 +2729,102 @@ krb5_krcc_unparse_cred(krb5_context context, krb5_ccache id,
*datapp = NULL;
*lenptr = 0;
- buf = malloc(GUESS_CRED_SIZE);
+ /* Do a dry run first to calculate the size. */
+ bc.bpp = bc.endp = NULL;
+ bc.size = 0;
+ kret = krb5_krcc_unparse_cred(context, creds, &bc);
+ CHECK(kret);
+ if (bc.size > MAX_CRED_SIZE)
+ return KRB5_CC_WRITE;
+
+ /* Allocate a buffer and unparse for real. */
+ buf = malloc(bc.size);
if (buf == NULL)
return KRB5_CC_NOMEM;
-
bc.bpp = buf;
- bc.endp = buf + GUESS_CRED_SIZE;
+ bc.endp = buf + bc.size;
+ kret = krb5_krcc_unparse_cred(context, creds, &bc);
+ CHECK(kret);
- kret = krb5_krcc_unparse_principal(context, id, creds->client, &bc);
- CHECK_N_GO(kret, errout);
+ /* Success! */
+ *datapp = buf;
+ *lenptr = bc.bpp - buf;
+ buf = NULL;
+ kret = KRB5_OK;
- kret = krb5_krcc_unparse_principal(context, id, creds->server, &bc);
- CHECK_N_GO(kret, errout);
+errout:
+ free(buf);
+ return kret;
+}
- kret = krb5_krcc_unparse_keyblock(context, id, &creds->keyblock, &bc);
- CHECK_N_GO(kret, errout);
+static krb5_error_code
+krb5_krcc_parse_index(krb5_context context, krb5_int32 *version,
+ char **primary, void *payload, int psize)
+{
+ krb5_error_code kret;
+ krb5_krcc_bc bc;
+ krb5_data data;
- kret = krb5_krcc_unparse_times(context, id, &creds->times, &bc);
- CHECK_N_GO(kret, errout);
+ bc.bpp = payload;
+ bc.endp = bc.bpp + psize;
- kret = krb5_krcc_unparse_octet(context, id, (krb5_int32) creds->is_skey,
- &bc);
- CHECK_N_GO(kret, errout);
+ kret = krb5_krcc_parse_int32(context, version, &bc);
+ CHECK_OUT(kret);
- kret = krb5_krcc_unparse_int32(context, id, creds->ticket_flags, &bc);
- CHECK_N_GO(kret, errout);
+ kret = krb5_krcc_parse_krb5data(context, &data, &bc);
+ CHECK_OUT(kret);
- kret = krb5_krcc_unparse_addrs(context, id, creds->addresses, &bc);
- CHECK_N_GO(kret, errout);
+ *primary = (char *)data.data;
+ return KRB5_OK;
+}
- kret = krb5_krcc_unparse_authdata(context, id, creds->authdata, &bc);
- CHECK_N_GO(kret, errout);
+static krb5_error_code
+krb5_krcc_unparse_index_internal(krb5_context context, krb5_int32 version,
+ const char *primary, krb5_krcc_bc *bc)
+{
+ krb5_error_code kret;
+ krb5_data data;
- kret = krb5_krcc_unparse_krb5data(context, id, &creds->ticket, &bc);
- CHECK_N_GO(kret, errout);
+ data.length = strlen(primary) + 1;
+ data.data = (void *)primary;
- kret = krb5_krcc_unparse_krb5data(context, id, &creds->second_ticket, &bc);
- CHECK_N_GO(kret, errout);
+ kret = krb5_krcc_unparse_int32(context, version, bc);
+ CHECK_OUT(kret);
+
+ kret = krb5_krcc_unparse_krb5data(context, &data, bc);
+ CHECK_OUT(kret);
+
+ return KRB5_OK;
+}
+
+static krb5_error_code
+krb5_krcc_unparse_index(krb5_context context, krb5_int32 version,
+ const char *primary, void **datapp, int *lenptr)
+{
+ krb5_error_code kret;
+ krb5_krcc_bc bc;
+ char *buf;
+
+ if (!primary || !datapp || !lenptr)
+ return EINVAL;
+
+ *datapp = NULL;
+ *lenptr = 0;
+
+ /* Do a dry run first to calculate the size. */
+ bc.bpp = bc.endp = NULL;
+ bc.size = 0;
+ kret = krb5_krcc_unparse_index_internal(context, version, primary, &bc);
+ CHECK_OUT(kret);
+
+ buf = malloc(bc.size);
+ if (buf == NULL)
+ return ENOMEM;
+
+ bc.bpp = buf;
+ bc.endp = buf + bc.size;
+ kret = krb5_krcc_unparse_index_internal(context, version, primary, &bc);
+ CHECK(kret);
/* Success! */
*datapp = buf;
@@ -2022,6 +2832,8 @@ krb5_krcc_unparse_cred(krb5_context context, krb5_ccache id,
kret = KRB5_OK;
errout:
+ if (kret)
+ free(buf);
return kret;
}
@@ -2065,15 +2877,15 @@ const krb5_cc_ops krb5_krcc_ops = {
krb5_krcc_remove_cred,
krb5_krcc_set_flags,
krb5_krcc_get_flags, /* added after 1.4 release */
- NULL,
- NULL,
- NULL,
+ krb5_krcc_ptcursor_new,
+ krb5_krcc_ptcursor_next,
+ krb5_krcc_ptcursor_free,
NULL, /* move */
krb5_krcc_last_change_time, /* lastchange */
NULL, /* wasdefault */
krb5_krcc_lock,
krb5_krcc_unlock,
- NULL, /* switch_to */
+ krb5_krcc_switch_to, /* switch_to */
};
#else /* !USE_KEYRING_CCACHE */
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