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📄 Makefile.am(7.68 KB)
📄 Makefile.in(224.98 KB)
📄 acache.c(26.87 KB)
📄 acl.c(7.58 KB)
📄 add_et_list.c(2.2 KB)
📄 addr_families.c(38.89 KB)
📄 aes-test.c(22.56 KB)
📄 aname_to_localname.c(2.83 KB)
📄 appdefault.c(4.41 KB)
📄 asn1_glue.c(2.37 KB)
📄 auth_context.c(14.97 KB)
📄 build_ap_req.c(2.77 KB)
📄 build_auth.c(5.5 KB)
📄 cache.c(41.88 KB)
📄 ccache_plugin.h(1.67 KB)
📄 changepw.c(20.59 KB)
📄 codec.c(6.1 KB)
📄 config_file.c(31.7 KB)
📄 constants.c(2.51 KB)
📄 context.c(37.71 KB)
📄 convert_creds.c(3.46 KB)
📄 copy_host_realm.c(2.66 KB)
📄 crc.c(2.19 KB)
📄 creds.c(8.75 KB)
📄 crypto-aes.c(4.62 KB)
📄 crypto-algs.c(3.04 KB)
📄 crypto-arcfour.c(8.78 KB)
📄 crypto-des-common.c(4.37 KB)
📄 crypto-des.c(8.8 KB)
📄 crypto-des3.c(5.36 KB)
📄 crypto-evp.c(5.45 KB)
📄 crypto-null.c(2.55 KB)
📄 crypto-pk.c(8.4 KB)
📄 crypto-rand.c(3.43 KB)
📄 crypto-stubs.c(3.1 KB)
📄 crypto.c(66.51 KB)
📄 crypto.h(6.5 KB)
📄 data.c(5.66 KB)
📄 deprecated.c(14.72 KB)
📄 derived-key-test.c(6.48 KB)
📄 digest.c(31.6 KB)
📄 doxygen.c(25.72 KB)
📄 eai_to_heim_errno.c(3.46 KB)
📄 error_string.c(8.93 KB)
📄 expand_hostname.c(5.59 KB)
📄 expand_path.c(12.35 KB)
📄 fcache.c(25.36 KB)
📄 free.c(2.01 KB)
📄 free_host_realm.c(2.1 KB)
📄 generate_seq_number.c(2.03 KB)
📄 generate_subkey.c(2.6 KB)
📄 get_addrs.c(8.2 KB)
📄 get_cred.c(38.45 KB)
📄 get_default_principal.c(4.47 KB)
📄 get_default_realm.c(2.74 KB)
📄 get_for_creds.c(13.48 KB)
📄 get_host_realm.c(7.06 KB)
📄 get_in_tkt.c(14.45 KB)
📄 get_port.c(2.04 KB)
📄 heim_err.et(1.7 KB)
📄 init_creds.c(12.11 KB)
📄 init_creds_pw.c(52.57 KB)
📄 k524_err.et(577 B)
📄 kcm.c(26.55 KB)
📄 kcm.h(2.83 KB)
📄 kerberos.8(4.14 KB)
📄 keyblock.c(5.31 KB)
📄 keytab.c(23.88 KB)
📄 keytab_any.c(6.48 KB)
📄 keytab_file.c(19.7 KB)
📄 keytab_keyfile.c(10.74 KB)
📄 keytab_memory.c(6.29 KB)
📄 krb5-private.h(12.91 KB)
📄 krb5-protos.h(113.43 KB)
📄 krb5-v4compat.h(4.44 KB)
📄 krb5.conf.5(18.31 KB)
📄 krb5.h(29.75 KB)
📄 krb5.moduli(1.11 KB)
📄 krb524_convert_creds_kdc.3(3.12 KB)
📄 krb5_425_conv_principal.3(7.02 KB)
📄 krb5_acl_match_file.3(3.49 KB)
📄 krb5_aname_to_localname.3(2.87 KB)
📄 krb5_appdefault.3(3.08 KB)
📄 krb5_auth_context.3(10.8 KB)
📄 krb5_c_make_checksum.3(6.92 KB)
📄 krb5_ccapi.h(7.52 KB)
📄 krb5_check_transited.3(3.28 KB)
📄 krb5_create_checksum.3(6.02 KB)
📄 krb5_creds.3(3.31 KB)
📄 krb5_digest.3(6.57 KB)
📄 krb5_eai_to_heim_errno.3(2.4 KB)
📄 krb5_encrypt.3(7 KB)
📄 krb5_err.et(12.86 KB)
📄 krb5_find_padata.3(2.53 KB)
📄 krb5_generate_random_block.3(2.1 KB)
📄 krb5_get_all_client_addrs.3(2.83 KB)
📄 krb5_get_credentials.3(5.03 KB)
📄 krb5_get_creds.3(5.28 KB)
📄 krb5_get_forwarded_creds.3(2.74 KB)
📄 krb5_get_in_cred.3(7.46 KB)
📄 krb5_get_init_creds.3(11.03 KB)
📄 krb5_get_krbhst.3(3.26 KB)
📄 krb5_getportbyname.3(2.32 KB)
📄 krb5_init_context.3(7.88 KB)
📄 krb5_is_thread_safe.3(2.24 KB)
📄 krb5_krbhst_init.3(5.67 KB)
📄 krb5_locl.h(8.47 KB)
📄 krb5_mk_req.3(5.18 KB)
📄 krb5_mk_safe.3(2.78 KB)
📄 krb5_openlog.3(7.96 KB)
📄 krb5_parse_name.3(2.57 KB)
📄 krb5_principal.3(11.85 KB)
📄 krb5_rcache.3(4.21 KB)
📄 krb5_rd_error.3(3.33 KB)
📄 krb5_rd_safe.3(2.77 KB)
📄 krb5_set_default_realm.3(4.29 KB)
📄 krb5_set_password.3(4.11 KB)
📄 krb5_string_to_key.3(4.39 KB)
📄 krb5_timeofday.3(3.33 KB)
📄 krb5_verify_init_creds.3(3.51 KB)
📄 krb5_verify_user.3(6.71 KB)
📄 krb_err.et(2.55 KB)
📄 krbhst-test.c(3.02 KB)
📄 krbhst.c(26.94 KB)
📄 kuserok.c(8.14 KB)
📄 locate_plugin.h(2.36 KB)
📄 log.c(11.94 KB)
📄 mcache.c(11.54 KB)
📄 misc.c(3.9 KB)
📄 mit_glue.c(11.14 KB)
📄 mk_error.c(3.23 KB)
📄 mk_priv.c(4.54 KB)
📄 mk_rep.c(3.99 KB)
📄 mk_req.c(3.58 KB)
📄 mk_req_ext.c(4.78 KB)
📄 mk_safe.c(4.36 KB)
📄 n-fold-test.c(4.14 KB)
📄 n-fold.c(3.8 KB)
📄 net_read.c(1.86 KB)
📄 net_write.c(3.05 KB)
📄 pac.c(28.37 KB)
📄 padata.c(2.35 KB)
📄 parse-name-test.c(5.81 KB)
📄 pcache.c(2.33 KB)
📄 pkinit.c(63.8 KB)
📄 plugin.c(13.71 KB)
📄 principal.c(28.4 KB)
📄 prog_setup.c(2.34 KB)
📄 prompter_posix.c(2.45 KB)
📄 rd_cred.c(9.44 KB)
📄 rd_error.c(3.83 KB)
📄 rd_priv.c(5.38 KB)
📄 rd_rep.c(3.72 KB)
📄 rd_req.c(25.6 KB)
📄 rd_safe.c(6.34 KB)
📄 read_message.c(3.22 KB)
📄 recvauth.c(6.16 KB)
📄 replay.c(8.24 KB)
📄 salt-aes.c(3.34 KB)
📄 salt-arcfour.c(3.24 KB)
📄 salt-des.c(6.68 KB)
📄 salt-des3.c(4.36 KB)
📄 salt.c(9 KB)
📄 scache.c(32.86 KB)
📄 send_to_kdc.c(16.06 KB)
📄 send_to_kdc_plugin.h(2.22 KB)
📄 sendauth.c(6.12 KB)
📄 set_default_realm.c(3.01 KB)
📄 sock_principal.c(2.52 KB)
📄 store-int.c(2.14 KB)
📄 store-int.h(2.07 KB)
📄 store-test.c(3.63 KB)
📄 store.c(35.77 KB)
📄 store_emem.c(5.06 KB)
📄 store_fd.c(3.4 KB)
📄 store_mem.c(5.42 KB)
📄 string-to-key-test.c(5.75 KB)
📄 test_acl.c(4.56 KB)
📄 test_addr.c(7.27 KB)
📄 test_alname.c(4.28 KB)
📄 test_cc.c(19.39 KB)
📄 test_config.c(7.92 KB)
📄 test_crypto.c(5.68 KB)
📄 test_crypto_wrapping.c(4.48 KB)
📄 test_forward.c(3.64 KB)
📄 test_get_addrs.c(3.21 KB)
📄 test_hostname.c(3.82 KB)
📄 test_keytab.c(7.42 KB)
📄 test_kuserok.c(2.9 KB)
📄 test_mem.c(2.21 KB)
📄 test_pac.c(15.1 KB)
📄 test_pkinit_dh2key.c(6.9 KB)
📄 test_plugin.c(3.4 KB)
📄 test_prf.c(3.21 KB)
📄 test_princ.c(10.44 KB)
📄 test_renew.c(3.22 KB)
📄 test_store.c(7.96 KB)
📄 test_time.c(2.57 KB)
📄 ticket.c(21.91 KB)
📄 time.c(3.84 KB)
📄 transited.c(11.11 KB)
📄 verify_init.c(6.47 KB)
📄 verify_krb5_conf.8(3.41 KB)
📄 verify_krb5_conf.c(20.63 KB)
📄 verify_user.c(7 KB)
📄 version-script.map(18.82 KB)
📄 version.c(1.71 KB)
📄 warn.c(8.98 KB)
📄 write_message.c(2.87 KB)

Editing: keytab_keyfile.c

/*
 * Copyright (c) 1997 - 2007 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 "krb5_locl.h"

#ifndef HEIMDAL_SMALLER

/* afs keyfile operations --------------------------------------- */

/*
 * Minimum tools to handle the AFS KeyFile.
 *
 * Format of the KeyFile is:
 * <int32_t numkeys> {[<int32_t kvno> <char[8] deskey>] * numkeys}
 *
 * It just adds to the end of the keyfile, deleting isn't implemented.
 * Use your favorite text/hex editor to delete keys.
 *
 */

#define AFS_SERVERTHISCELL "/usr/afs/etc/ThisCell"
#define AFS_SERVERMAGICKRBCONF "/usr/afs/etc/krb.conf"

struct akf_data {
    uint32_t num_entries;
    char *filename;
    char *cell;
    char *realm;
};

/*
 * set `d->cell' and `d->realm'
 */

static int
get_cell_and_realm (krb5_context context, struct akf_data *d)
{
    FILE *f;
    char buf[BUFSIZ], *cp;
    int ret;

f = fopen (AFS_SERVERTHISCELL, "r");
    if (f == NULL) {
	ret = errno;
	krb5_set_error_message (context, ret,
				N_("Open ThisCell %s: %s", ""),
				AFS_SERVERTHISCELL,
				strerror(ret));
	return ret;
    }
    if (fgets (buf, sizeof(buf), f) == NULL) {
	fclose (f);
	krb5_set_error_message (context, EINVAL,
				N_("No cell in ThisCell file %s", ""),
				AFS_SERVERTHISCELL);
	return EINVAL;
    }
    buf[strcspn(buf, "\n")] = '\0';
    fclose(f);

d->cell = strdup (buf);
    if (d->cell == NULL) {
	krb5_set_error_message(context, ENOMEM,
			       N_("malloc: out of memory", ""));
	return ENOMEM;
    }

f = fopen (AFS_SERVERMAGICKRBCONF, "r");
    if (f != NULL) {
	if (fgets (buf, sizeof(buf), f) == NULL) {
	    free (d->cell);
	    d->cell = NULL;
	    fclose (f);
	    krb5_set_error_message (context, EINVAL,
				    N_("No realm in ThisCell file %s", ""),
				    AFS_SERVERMAGICKRBCONF);
	    return EINVAL;
	}
	buf[strcspn(buf, "\n")] = '\0';
	fclose(f);
    }
    /* uppercase */
    for (cp = buf; *cp != '\0'; cp++)
	*cp = toupper((unsigned char)*cp);

d->realm = strdup (buf);
    if (d->realm == NULL) {
	free (d->cell);
	d->cell = NULL;
	krb5_set_error_message(context, ENOMEM,
			       N_("malloc: out of memory", ""));
	return ENOMEM;
    }
    return 0;
}

/*
 * init and get filename
 */

static krb5_error_code KRB5_CALLCONV
akf_resolve(krb5_context context, const char *name, krb5_keytab id)
{
    int ret;
    struct akf_data *d = malloc(sizeof (struct akf_data));

if (d == NULL) {
	krb5_set_error_message(context, ENOMEM,
			       N_("malloc: out of memory", ""));
	return ENOMEM;
    }

d->num_entries = 0;
    ret = get_cell_and_realm (context, d);
    if (ret) {
	free (d);
	return ret;
    }
    d->filename = strdup (name);
    if (d->filename == NULL) {
	free (d->cell);
	free (d->realm);
	free (d);
	krb5_set_error_message(context, ENOMEM,
			       N_("malloc: out of memory", ""));
	return ENOMEM;
    }
    id->data = d;

return 0;
}

/*
 * cleanup
 */

static krb5_error_code KRB5_CALLCONV
akf_close(krb5_context context, krb5_keytab id)
{
    struct akf_data *d = id->data;

free (d->filename);
    free (d->cell);
    free (d);
    return 0;
}

/*
 * Return filename
 */

static krb5_error_code KRB5_CALLCONV
akf_get_name(krb5_context context,
	     krb5_keytab id,
	     char *name,
	     size_t name_sz)
{
    struct akf_data *d = id->data;

strlcpy (name, d->filename, name_sz);
    return 0;
}

/*
 * Init
 */

static krb5_error_code KRB5_CALLCONV
akf_start_seq_get(krb5_context context,
		  krb5_keytab id,
		  krb5_kt_cursor *c)
{
    int32_t ret;
    struct akf_data *d = id->data;

c->fd = open (d->filename, O_RDONLY | O_BINARY | O_CLOEXEC, 0600);
    if (c->fd < 0) {
	ret = errno;
	krb5_set_error_message(context, ret,
			       N_("keytab afs keyfile open %s failed: %s", ""),
			       d->filename, strerror(ret));
	return ret;
    }

c->data = NULL;
    c->sp = krb5_storage_from_fd(c->fd);
    if (c->sp == NULL) {
	close(c->fd);
	krb5_clear_error_message (context);
	return KRB5_KT_NOTFOUND;
    }
    krb5_storage_set_eof_code(c->sp, KRB5_KT_END);

ret = krb5_ret_uint32(c->sp, &d->num_entries);
    if(ret || d->num_entries > INT_MAX / 8) {
	krb5_storage_free(c->sp);
	close(c->fd);
	krb5_clear_error_message (context);
	if(ret == KRB5_KT_END)
	    return KRB5_KT_NOTFOUND;
	return ret;
    }

return 0;
}

static krb5_error_code KRB5_CALLCONV
akf_next_entry(krb5_context context,
	       krb5_keytab id,
	       krb5_keytab_entry *entry,
	       krb5_kt_cursor *cursor)
{
    struct akf_data *d = id->data;
    int32_t kvno;
    off_t pos;
    int ret;

pos = krb5_storage_seek(cursor->sp, 0, SEEK_CUR);

if ((pos - 4) / (4 + 8) >= d->num_entries)
	return KRB5_KT_END;

ret = krb5_make_principal (context, &entry->principal,
			       d->realm, "afs", d->cell, NULL);
    if (ret)
	goto out;

ret = krb5_ret_int32(cursor->sp, &kvno);
    if (ret) {
	krb5_free_principal (context, entry->principal);
	goto out;
    }

entry->vno = kvno;

if (cursor->data)
	entry->keyblock.keytype         = ETYPE_DES_CBC_MD5;
    else
	entry->keyblock.keytype         = ETYPE_DES_CBC_CRC;
    entry->keyblock.keyvalue.length = 8;
    entry->keyblock.keyvalue.data   = malloc (8);
    if (entry->keyblock.keyvalue.data == NULL) {
	krb5_free_principal (context, entry->principal);
	krb5_set_error_message(context, ENOMEM,
			       N_("malloc: out of memory", ""));
	ret = ENOMEM;
	goto out;
    }

ret = krb5_storage_read(cursor->sp, entry->keyblock.keyvalue.data, 8);
    if(ret != 8)
	ret = (ret < 0) ? errno : KRB5_KT_END;
    else
	ret = 0;

entry->timestamp = time(NULL);
    entry->flags = 0;
    entry->aliases = NULL;

out:
    if (cursor->data) {
	krb5_storage_seek(cursor->sp, pos + 4 + 8, SEEK_SET);
	cursor->data = NULL;
    } else
	cursor->data = cursor;
    return ret;
}

static krb5_error_code KRB5_CALLCONV
akf_end_seq_get(krb5_context context,
		krb5_keytab id,
		krb5_kt_cursor *cursor)
{
    krb5_storage_free(cursor->sp);
    close(cursor->fd);
    cursor->data = NULL;
    return 0;
}

static krb5_error_code KRB5_CALLCONV
akf_add_entry(krb5_context context,
	      krb5_keytab id,
	      krb5_keytab_entry *entry)
{
    struct akf_data *d = id->data;
    int fd, created = 0;
    krb5_error_code ret;
    int32_t len;
    krb5_storage *sp;

if (entry->keyblock.keyvalue.length != 8)
	return 0;
    switch(entry->keyblock.keytype) {
    case ETYPE_DES_CBC_CRC:
    case ETYPE_DES_CBC_MD4:
    case ETYPE_DES_CBC_MD5:
	break;
    default:
	return 0;
    }

fd = open (d->filename, O_RDWR | O_BINARY | O_CLOEXEC);
    if (fd < 0) {
	fd = open (d->filename,
		   O_RDWR | O_BINARY | O_CREAT | O_EXCL | O_CLOEXEC, 0600);
	if (fd < 0) {
	    ret = errno;
	    krb5_set_error_message(context, ret,
				   N_("open keyfile(%s): %s", ""),
				   d->filename,
				   strerror(ret));
	    return ret;
	}
	created = 1;
    }

sp = krb5_storage_from_fd(fd);
    if(sp == NULL) {
	close(fd);
	krb5_set_error_message(context, ENOMEM,
			       N_("malloc: out of memory", ""));
	return ENOMEM;
    }
    if (created)
	len = 0;
    else {
	if(krb5_storage_seek(sp, 0, SEEK_SET) < 0) {
	    ret = errno;
	    krb5_storage_free(sp);
	    close(fd);
	    krb5_set_error_message(context, ret,
				   N_("seeking in keyfile: %s", ""),
				   strerror(ret));
	    return ret;
	}

ret = krb5_ret_int32(sp, &len);
	if(ret) {
	    krb5_storage_free(sp);
	    close(fd);
	    return ret;
	}
    }

/*
     * Make sure we don't add the entry twice, assumes the DES
     * encryption types are all the same key.
     */
    if (len > 0) {
	int32_t kvno;
	int i;

for (i = 0; i < len; i++) {
	    ret = krb5_ret_int32(sp, &kvno);
	    if (ret) {
		krb5_set_error_message (context, ret,
					N_("Failed getting kvno from keyfile", ""));
		goto out;
	    }
	    if(krb5_storage_seek(sp, 8, SEEK_CUR) < 0) {
		ret = errno;
		krb5_set_error_message (context, ret,
					N_("Failed seeing in keyfile: %s", ""),
					strerror(ret));
		goto out;
	    }
	    if (kvno == entry->vno) {
		ret = 0;
		goto out;
	    }
	}
    }

len++;

if(krb5_storage_seek(sp, 0, SEEK_SET) < 0) {
	ret = errno;
	krb5_set_error_message (context, ret,
				N_("Failed seeing in keyfile: %s", ""),
				strerror(ret));
	goto out;
    }

ret = krb5_store_int32(sp, len);
    if(ret) {
	ret = errno;
	krb5_set_error_message (context, ret,
				N_("keytab keyfile failed new length", ""));
	return ret;
    }

if(krb5_storage_seek(sp, (len - 1) * (8 + 4), SEEK_CUR) < 0) {
	ret = errno;
	krb5_set_error_message (context, ret,
				N_("seek to end: %s", ""), strerror(ret));
	goto out;
    }

ret = krb5_store_int32(sp, entry->vno);
    if(ret) {
	krb5_set_error_message(context, ret,
			       N_("keytab keyfile failed store kvno", ""));
	goto out;
    }
    ret = krb5_storage_write(sp, entry->keyblock.keyvalue.data,
			     entry->keyblock.keyvalue.length);
    if(ret != entry->keyblock.keyvalue.length) {
	if (ret < 0)
	    ret = errno;
	else
	    ret = ENOTTY;
	krb5_set_error_message(context, ret,
			       N_("keytab keyfile failed to add key", ""));
	goto out;
    }
    ret = 0;
out:
    krb5_storage_free(sp);
    close (fd);
    return ret;
}

const krb5_kt_ops krb5_akf_ops = {
    "AFSKEYFILE",
    akf_resolve,
    akf_get_name,
    akf_close,
    NULL, /* destroy */
    NULL, /* get */
    akf_start_seq_get,
    akf_next_entry,
    akf_end_seq_get,
    akf_add_entry,
    NULL /* remove */
};

#endif /* HEIMDAL_SMALLER */

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