Adding upstream version 2:4.17.12+dfsg.upstream/2%4.17.12+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 495 insertions, 0 deletions

diff --git a/third_party/heimdal/lib/hdb/db3.c b/third_party/heimdal/lib/hdb/db3.c
new file mode 100644
index 0000000..9d0c0a9
--- /dev/null
+++ b/third_party/heimdal/lib/hdb/db3.c
@@ -0,0 +1,495 @@
+/*
+ * Copyright (c) 1997 - 2006 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "hdb_locl.h"
+
+#include <fcntl.h>
+
+#if HAVE_DB3
+
+#ifdef HAVE_DBHEADER
+#include <db.h>
+#elif HAVE_DB6_DB_H
+#include <db6/db.h>
+#elif HAVE_DB5_DB_H
+#include <db5/db.h>
+#elif HAVE_DB4_DB_H
+#include <db4/db.h>
+#elif HAVE_DB3_DB_H
+#include <db3/db.h>
+#else
+#include <db.h>
+#endif
+
+typedef struct {
+    HDB hdb;            /* generic members */
+    int lock_fd;        /* DB3-specific */
+    int do_sync;        /* DB3-specific */
+} DB3_HDB;
+
+
+static krb5_error_code
+DB_close(krb5_context context, HDB *db)
+{
+    DB3_HDB *db3 = (DB3_HDB *)db;
+    DB *d = (DB*)db->hdb_db;
+    DBC *dbcp = (DBC*)db->hdb_dbc;
+
+    heim_assert(d != 0, "Closing already closed HDB");
+
+    if (dbcp != NULL)
+	dbcp->c_close(dbcp);
+    if (d != NULL)
+	d->close(d, 0);
+    if (db3->lock_fd >= 0)
+	close(db3->lock_fd);
+
+    db3->lock_fd = -1;
+    db->hdb_dbc = 0;
+    db->hdb_db = 0;
+
+    return 0;
+}
+
+static krb5_error_code
+DB_destroy(krb5_context context, HDB *db)
+{
+    krb5_error_code ret;
+
+    ret = hdb_clear_master_key(context, db);
+    krb5_config_free_strings(db->virtual_hostbased_princ_svcs);
+    free(db->hdb_name);
+    free(db);
+    return ret;
+}
+
+static krb5_error_code
+DB_set_sync(krb5_context context, HDB *db, int on)
+{
+    DB3_HDB *db3 = (DB3_HDB *)db;
+    DB *d = (DB*)db->hdb_db;
+    krb5_error_code ret = 0;
+
+    db3->do_sync = on;
+    if (on) {
+        ret = (*d->sync)(d, 0);
+        if (ret) {
+            if (ret == EACCES || ret == ENOSPC || ret == EINVAL) {
+                krb5_set_error_message(context, ret,
+                                       "Database %s put sync error: %s",
+                                       db->hdb_name, strerror(ret));
+            } else {
+                ret = HDB_ERR_UK_SERROR;
+                krb5_set_error_message(context, ret,
+                                       "Database %s put sync error: unknown (%d)",
+                                       db->hdb_name, ret);
+            }
+        }
+    }
+    return ret;
+}
+
+static krb5_error_code
+DB_lock(krb5_context context, HDB *db, int operation)
+{
+
+    return 0;
+}
+
+static krb5_error_code
+DB_unlock(krb5_context context, HDB *db)
+{
+
+    return 0;
+}
+
+
+static krb5_error_code
+DB_seq(krb5_context context, HDB *db,
+       unsigned flags, hdb_entry *entry, int flag)
+{
+    DBT key, value;
+    DBC *dbcp = db->hdb_dbc;
+    krb5_data key_data, data;
+    int code;
+
+    memset(&key, 0, sizeof(DBT));
+    memset(&value, 0, sizeof(DBT));
+    code = (*dbcp->c_get)(dbcp, &key, &value, flag);
+    if (code == DB_NOTFOUND)
+	return HDB_ERR_NOENTRY;
+    if (code)
+	return code;
+
+    key_data.data = key.data;
+    key_data.length = key.size;
+    data.data = value.data;
+    data.length = value.size;
+    memset(entry, 0, sizeof(*entry));
+    if (hdb_value2entry(context, &data, entry))
+	return DB_seq(context, db, flags, entry, DB_NEXT);
+    if (db->hdb_master_key_set && (flags & HDB_F_DECRYPT)) {
+	code = hdb_unseal_keys (context, db, entry);
+	if (code)
+	    hdb_free_entry (context, db, entry);
+    }
+    if (entry->principal == NULL) {
+	entry->principal = malloc(sizeof(*entry->principal));
+	if (entry->principal == NULL) {
+	    hdb_free_entry (context, db, entry);
+	    krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
+	    return ENOMEM;
+	} else {
+	    hdb_key2principal(context, &key_data, entry->principal);
+	}
+    }
+    return 0;
+}
+
+
+static krb5_error_code
+DB_firstkey(krb5_context context, HDB *db, unsigned flags, hdb_entry *entry)
+{
+    return DB_seq(context, db, flags, entry, DB_FIRST);
+}
+
+
+static krb5_error_code
+DB_nextkey(krb5_context context, HDB *db, unsigned flags, hdb_entry *entry)
+{
+    return DB_seq(context, db, flags, entry, DB_NEXT);
+}
+
+static krb5_error_code
+DB_rename(krb5_context context, HDB *db, const char *new_name)
+{
+    int ret;
+    char *old, *new;
+
+    if (strncmp(new_name, "db:", sizeof("db:") - 1) == 0)
+        new_name += sizeof("db:") - 1;
+    else if (strncmp(new_name, "db3:", sizeof("db3:") - 1) == 0)
+        new_name += sizeof("db3:") - 1;
+
+    ret = asprintf(&old, "%s.db", db->hdb_name);
+    if (ret == -1)
+	return ENOMEM;
+    ret = asprintf(&new, "%s.db", new_name);
+    if (ret == -1) {
+	free(old);
+	return ENOMEM;
+    }
+    ret = rename(old, new);
+    free(old);
+    if(ret) {
+	free(new);
+	return errno;
+    }
+
+    free(db->hdb_name);
+    new[strlen(new) - 3] = '\0';
+    db->hdb_name = new;
+    return 0;
+}
+
+static krb5_error_code
+DB__get(krb5_context context, HDB *db, krb5_data key, krb5_data *reply)
+{
+    DB *d = (DB*)db->hdb_db;
+    DBT k, v;
+    int code;
+
+    memset(&k, 0, sizeof(DBT));
+    memset(&v, 0, sizeof(DBT));
+    k.data = key.data;
+    k.size = key.length;
+    k.flags = 0;
+    code = (*d->get)(d, NULL, &k, &v, 0);
+    if(code == DB_NOTFOUND)
+	return HDB_ERR_NOENTRY;
+    if(code)
+	return code;
+
+    krb5_data_copy(reply, v.data, v.size);
+    return 0;
+}
+
+static krb5_error_code
+DB__put(krb5_context context, HDB *db, int replace,
+	krb5_data key, krb5_data value)
+{
+    DB3_HDB *db3 = (DB3_HDB *)db;
+    DB *d = (DB*)db->hdb_db;
+    DBT k, v;
+    int code;
+
+    memset(&k, 0, sizeof(DBT));
+    memset(&v, 0, sizeof(DBT));
+    k.data = key.data;
+    k.size = key.length;
+    k.flags = 0;
+    v.data = value.data;
+    v.size = value.length;
+    v.flags = 0;
+    code = (*d->put)(d, NULL, &k, &v, replace ? 0 : DB_NOOVERWRITE);
+    if(code == DB_KEYEXIST)
+	return HDB_ERR_EXISTS;
+    if (code) {
+        /*
+         * Berkeley DB 3 and up have a terrible error reporting
+         * interface...
+         *
+         * DB->err() doesn't output a string.
+         * DB->set_errcall()'s callback function doesn't have a void *
+         * argument that can be used to place the error somewhere.
+         *
+         * The only thing we could do is fopen()/fdopen() a file, set it
+         * with DB->set_errfile(), then call DB->err(), then read the
+         * message from the file, unset it with DB->set_errfile(), close
+         * it and delete it.  That's a lot of work... so we don't do it.
+         */
+        if (code == EACCES || code == ENOSPC || code == EINVAL) {
+            krb5_set_error_message(context, code,
+                                   "Database %s put error: %s",
+                                   db->hdb_name, strerror(code));
+        } else {
+            code = HDB_ERR_UK_SERROR;
+            krb5_set_error_message(context, code,
+                                   "Database %s put error: unknown (%d)",
+                                   db->hdb_name, code);
+        }
+	return code;
+    }
+    return db->hdb_set_sync(context, db, db3->do_sync);
+}
+
+static krb5_error_code
+DB__del(krb5_context context, HDB *db, krb5_data key)
+{
+    DB3_HDB *db3 = (DB3_HDB *)db;
+    DB *d = (DB*)db->hdb_db;
+    DBT k;
+    krb5_error_code code;
+    memset(&k, 0, sizeof(DBT));
+    k.data = key.data;
+    k.size = key.length;
+    k.flags = 0;
+    code = (*d->del)(d, NULL, &k, 0);
+    if(code == DB_NOTFOUND)
+	return HDB_ERR_NOENTRY;
+    if (code) {
+        if (code == EACCES || code == ENOSPC || code == EINVAL) {
+            krb5_set_error_message(context, code,
+                                   "Database %s del error: %s",
+                                   db->hdb_name, strerror(code));
+        } else {
+            code = HDB_ERR_UK_SERROR;
+            krb5_set_error_message(context, code,
+                                   "Database %s del error: unknown (%d)",
+                                   db->hdb_name, code);
+        }
+	return code;
+    }
+    return db->hdb_set_sync(context, db, db3->do_sync);
+}
+
+#define RD_CACHE_SZ 0x8000     /* Minimal read cache size */
+#define WR_CACHE_SZ 0x8000     /* Minimal write cache size */
+
+static int
+_open_db(DB *d, char *fn, int myflags, int flags, mode_t mode, int *fd)
+{
+    int ret;
+    int cache_size = (myflags & DB_RDONLY) ? RD_CACHE_SZ : WR_CACHE_SZ;
+
+    *fd = open(fn, flags, mode);
+
+    if (*fd == -1)
+       return errno;
+
+    /*
+     * Without DB_FCNTL_LOCKING, the DB library complains when initializing
+     * a database in an empty file. Since the database is our lock file,
+     * we create it before Berkeley DB does, so a new DB always starts empty.
+     */
+    myflags |= DB_FCNTL_LOCKING;
+
+    ret = flock(*fd, (myflags&DB_RDONLY) ? LOCK_SH : LOCK_EX);
+    if (ret == -1) {
+	ret = errno;
+	close(*fd);
+	*fd = -1;
+	return ret;
+    }
+
+    d->set_cachesize(d, 0, cache_size, 0);
+
+#if (DB_VERSION_MAJOR > 4) || ((DB_VERSION_MAJOR == 4) && (DB_VERSION_MINOR >= 1))
+    ret = (*d->open)(d, NULL, fn, NULL, DB_BTREE, myflags, mode);
+#else
+    ret = (*d->open)(d, fn, NULL, DB_BTREE, myflags, mode);
+#endif
+
+    if (ret != 0) {
+	close(*fd);
+	*fd = -1;
+    }
+
+    return ret;
+}
+
+static krb5_error_code
+DB_open(krb5_context context, HDB *db, int flags, mode_t mode)
+{
+    DB3_HDB *db3 = (DB3_HDB *)db;
+    DBC *dbc = NULL;
+    char *fn;
+    krb5_error_code ret;
+    DB *d;
+    int myflags = 0;
+    int aret;
+
+    heim_assert(db->hdb_db == 0, "Opening already open HDB");
+
+    if (flags & O_CREAT)
+      myflags |= DB_CREATE;
+
+    if (flags & O_EXCL)
+      myflags |= DB_EXCL;
+
+    if((flags & O_ACCMODE) == O_RDONLY)
+      myflags |= DB_RDONLY;
+
+    if (flags & O_TRUNC)
+      myflags |= DB_TRUNCATE;
+
+    aret = asprintf(&fn, "%s.db", db->hdb_name);
+    if (aret == -1) {
+	krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
+	return ENOMEM;
+    }
+
+    if (db_create(&d, NULL, 0) != 0) {
+	free(fn);
+	krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
+	return ENOMEM;
+    }
+    db->hdb_db = d;
+
+    /* From here on out always DB_close() before returning on error */
+
+    ret = _open_db(d, fn, myflags, flags, mode, &db3->lock_fd);
+    free(fn);
+    if (ret == ENOENT) {
+	/* try to open without .db extension */
+	ret = _open_db(d, db->hdb_name, myflags, flags, mode, &db3->lock_fd);
+    }
+
+    if (ret) {
+	DB_close(context, db);
+	krb5_set_error_message(context, ret, "opening %s: %s",
+			       db->hdb_name, strerror(ret));
+	return ret;
+    }
+
+#ifndef DB_CURSOR_BULK
+# define DB_CURSOR_BULK 0	/* Missing with DB < 4.8 */
+#endif
+    ret = (*d->cursor)(d, NULL, &dbc, DB_CURSOR_BULK);
+
+    if (ret) {
+	DB_close(context, db);
+	krb5_set_error_message(context, ret, "d->cursor: %s", strerror(ret));
+        return ret;
+    }
+    db->hdb_dbc = dbc;
+
+    if((flags & O_ACCMODE) == O_RDONLY)
+	ret = hdb_check_db_format(context, db);
+    else
+	ret = hdb_init_db(context, db);
+    if(ret == HDB_ERR_NOENTRY)
+	return 0;
+    if (ret) {
+	DB_close(context, db);
+	krb5_set_error_message(context, ret, "hdb_open: failed %s database %s",
+			       (flags & O_ACCMODE) == O_RDONLY ?
+			       "checking format of" : "initialize",
+			       db->hdb_name);
+    }
+
+    return ret;
+}
+
+krb5_error_code
+hdb_db3_create(krb5_context context, HDB **db,
+	       const char *filename)
+{
+    DB3_HDB **db3 = (DB3_HDB **)db;
+    *db3 = calloc(1, sizeof(**db3));    /* Allocate space for the larger db3 */
+    if (*db == NULL) {
+	krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
+	return ENOMEM;
+    }
+
+    (*db)->hdb_db = NULL;
+    (*db)->hdb_name = strdup(filename);
+    if ((*db)->hdb_name == NULL) {
+	free(*db);
+	*db = NULL;
+	krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
+	return ENOMEM;
+    }
+    (*db)->hdb_master_key_set = 0;
+    (*db)->hdb_openp = 0;
+    (*db)->hdb_capability_flags = HDB_CAP_F_HANDLE_ENTERPRISE_PRINCIPAL;
+    (*db)->hdb_open  = DB_open;
+    (*db)->hdb_close = DB_close;
+    (*db)->hdb_fetch_kvno = _hdb_fetch_kvno;
+    (*db)->hdb_store = _hdb_store;
+    (*db)->hdb_remove = _hdb_remove;
+    (*db)->hdb_firstkey = DB_firstkey;
+    (*db)->hdb_nextkey= DB_nextkey;
+    (*db)->hdb_lock = DB_lock;
+    (*db)->hdb_unlock = DB_unlock;
+    (*db)->hdb_rename = DB_rename;
+    (*db)->hdb__get = DB__get;
+    (*db)->hdb__put = DB__put;
+    (*db)->hdb__del = DB__del;
+    (*db)->hdb_destroy = DB_destroy;
+    (*db)->hdb_set_sync = DB_set_sync;
+
+    (*db3)->lock_fd = -1;
+    return 0;
+}
+#endif /* HAVE_DB3 */