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path: root/crypto/heimdal/lib/krb5/changepw.c
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Diffstat (limited to 'crypto/heimdal/lib/krb5/changepw.c')
-rw-r--r--crypto/heimdal/lib/krb5/changepw.c386
1 files changed, 0 insertions, 386 deletions
diff --git a/crypto/heimdal/lib/krb5/changepw.c b/crypto/heimdal/lib/krb5/changepw.c
deleted file mode 100644
index a17bf2b37e67..000000000000
--- a/crypto/heimdal/lib/krb5/changepw.c
+++ /dev/null
@@ -1,386 +0,0 @@
-/*
- * Copyright (c) 1997 - 2002 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>
-
-RCSID("$Id: changepw.c,v 1.38 2002/09/29 11:48:34 joda Exp $");
-
-static krb5_error_code
-send_request (krb5_context context,
- krb5_auth_context *auth_context,
- krb5_creds *creds,
- int sock,
- char *passwd,
- const char *host)
-{
- krb5_error_code ret;
- krb5_data ap_req_data;
- krb5_data krb_priv_data;
- krb5_data passwd_data;
- size_t len;
- u_char header[6];
- u_char *p;
- struct iovec iov[3];
- struct msghdr msghdr;
-
- krb5_data_zero (&ap_req_data);
-
- ret = krb5_mk_req_extended (context,
- auth_context,
- AP_OPTS_MUTUAL_REQUIRED | AP_OPTS_USE_SUBKEY,
- NULL, /* in_data */
- creds,
- &ap_req_data);
- if (ret)
- return ret;
-
- passwd_data.data = passwd;
- passwd_data.length = strlen(passwd);
-
- krb5_data_zero (&krb_priv_data);
-
- ret = krb5_mk_priv (context,
- *auth_context,
- &passwd_data,
- &krb_priv_data,
- NULL);
- if (ret)
- goto out2;
-
- len = 6 + ap_req_data.length + krb_priv_data.length;
- p = header;
- *p++ = (len >> 8) & 0xFF;
- *p++ = (len >> 0) & 0xFF;
- *p++ = 0;
- *p++ = 1;
- *p++ = (ap_req_data.length >> 8) & 0xFF;
- *p++ = (ap_req_data.length >> 0) & 0xFF;
-
- memset(&msghdr, 0, sizeof(msghdr));
- msghdr.msg_name = NULL;
- msghdr.msg_namelen = 0;
- msghdr.msg_iov = iov;
- msghdr.msg_iovlen = sizeof(iov)/sizeof(*iov);
-#if 0
- msghdr.msg_control = NULL;
- msghdr.msg_controllen = 0;
-#endif
-
- iov[0].iov_base = (void*)header;
- iov[0].iov_len = 6;
- iov[1].iov_base = ap_req_data.data;
- iov[1].iov_len = ap_req_data.length;
- iov[2].iov_base = krb_priv_data.data;
- iov[2].iov_len = krb_priv_data.length;
-
- if (sendmsg (sock, &msghdr, 0) < 0) {
- ret = errno;
- krb5_set_error_string(context, "sendmsg %s: %s", host, strerror(ret));
- }
-
- krb5_data_free (&krb_priv_data);
-out2:
- krb5_data_free (&ap_req_data);
- return ret;
-}
-
-static void
-str2data (krb5_data *d,
- const char *fmt,
- ...) __attribute__ ((format (printf, 2, 3)));
-
-static void
-str2data (krb5_data *d,
- const char *fmt,
- ...)
-{
- va_list args;
-
- va_start(args, fmt);
- d->length = vasprintf ((char **)&d->data, fmt, args);
- va_end(args);
-}
-
-static krb5_error_code
-process_reply (krb5_context context,
- krb5_auth_context auth_context,
- int sock,
- int *result_code,
- krb5_data *result_code_string,
- krb5_data *result_string,
- const char *host)
-{
- krb5_error_code ret;
- u_char reply[BUFSIZ];
- size_t len;
- u_int16_t pkt_len, pkt_ver;
- krb5_data ap_rep_data, priv_data;
- int save_errno;
-
- ret = recvfrom (sock, reply, sizeof(reply), 0, NULL, NULL);
- if (ret < 0) {
- save_errno = errno;
- krb5_set_error_string(context, "recvfrom %s: %s",
- host, strerror(save_errno));
- return save_errno;
- }
-
- len = ret;
- pkt_len = (reply[0] << 8) | (reply[1]);
- pkt_ver = (reply[2] << 8) | (reply[3]);
-
- if (pkt_len != len) {
- str2data (result_string, "client: wrong len in reply");
- *result_code = KRB5_KPASSWD_MALFORMED;
- return 0;
- }
- if (pkt_ver != 0x0001) {
- str2data (result_string,
- "client: wrong version number (%d)", pkt_ver);
- *result_code = KRB5_KPASSWD_MALFORMED;
- return 0;
- }
-
- ap_rep_data.data = reply + 6;
- ap_rep_data.length = (reply[4] << 8) | (reply[5]);
- priv_data.data = (u_char*)ap_rep_data.data + ap_rep_data.length;
- priv_data.length = len - ap_rep_data.length - 6;
- if ((u_char *)priv_data.data + priv_data.length > reply + len)
- return KRB5_KPASSWD_MALFORMED;
-
- if (ap_rep_data.length) {
- krb5_ap_rep_enc_part *ap_rep;
- u_char *p;
-
- ret = krb5_rd_rep (context,
- auth_context,
- &ap_rep_data,
- &ap_rep);
- if (ret)
- return ret;
-
- krb5_free_ap_rep_enc_part (context, ap_rep);
-
- ret = krb5_rd_priv (context,
- auth_context,
- &priv_data,
- result_code_string,
- NULL);
- if (ret) {
- krb5_data_free (result_code_string);
- return ret;
- }
-
- if (result_code_string->length < 2) {
- *result_code = KRB5_KPASSWD_MALFORMED;
- str2data (result_string,
- "client: bad length in result");
- return 0;
- }
- p = result_code_string->data;
-
- *result_code = (p[0] << 8) | p[1];
- krb5_data_copy (result_string,
- (unsigned char*)result_code_string->data + 2,
- result_code_string->length - 2);
- return 0;
- } else {
- KRB_ERROR error;
- size_t size;
- u_char *p;
-
- ret = decode_KRB_ERROR(reply + 6, len - 6, &error, &size);
- if (ret) {
- return ret;
- }
- if (error.e_data->length < 2) {
- krb5_warnx (context, "too short e_data to print anything usable");
- return 1; /* XXX */
- }
-
- p = error.e_data->data;
- *result_code = (p[0] << 8) | p[1];
- krb5_data_copy (result_string,
- p + 2,
- error.e_data->length - 2);
- return 0;
- }
-}
-
-/*
- * change the password using the credentials in `creds' (for the
- * principal indicated in them) to `newpw', storing the result of
- * the operation in `result_*' and an error code or 0.
- */
-
-krb5_error_code
-krb5_change_password (krb5_context context,
- krb5_creds *creds,
- char *newpw,
- int *result_code,
- krb5_data *result_code_string,
- krb5_data *result_string)
-{
- krb5_error_code ret;
- krb5_auth_context auth_context = NULL;
- krb5_krbhst_handle handle = NULL;
- krb5_krbhst_info *hi;
- int sock;
- int i;
- int done = 0;
- krb5_realm realm = creds->client->realm;
-
- ret = krb5_auth_con_init (context, &auth_context);
- if (ret)
- return ret;
-
- krb5_auth_con_setflags (context, auth_context,
- KRB5_AUTH_CONTEXT_DO_SEQUENCE);
-
- ret = krb5_krbhst_init (context, realm, KRB5_KRBHST_CHANGEPW, &handle);
- if (ret)
- goto out;
-
- while (!done && (ret = krb5_krbhst_next(context, handle, &hi)) == 0) {
- struct addrinfo *ai, *a;
-
- ret = krb5_krbhst_get_addrinfo(context, hi, &ai);
- if (ret)
- continue;
-
- for (a = ai; !done && a != NULL; a = a->ai_next) {
- int replied = 0;
-
- sock = socket (a->ai_family, a->ai_socktype, a->ai_protocol);
- if (sock < 0)
- continue;
-
- ret = connect(sock, a->ai_addr, a->ai_addrlen);
- if (ret < 0) {
- close (sock);
- goto out;
- }
-
- ret = krb5_auth_con_genaddrs (context, auth_context, sock,
- KRB5_AUTH_CONTEXT_GENERATE_LOCAL_ADDR);
- if (ret) {
- close (sock);
- goto out;
- }
-
- for (i = 0; !done && i < 5; ++i) {
- fd_set fdset;
- struct timeval tv;
-
- if (!replied) {
- replied = 0;
- ret = send_request (context,
- &auth_context,
- creds,
- sock,
- newpw,
- hi->hostname);
- if (ret) {
- close(sock);
- goto out;
- }
- }
-
- if (sock >= FD_SETSIZE) {
- krb5_set_error_string(context, "fd %d too large", sock);
- ret = ERANGE;
- close (sock);
- goto out;
- }
-
- FD_ZERO(&fdset);
- FD_SET(sock, &fdset);
- tv.tv_usec = 0;
- tv.tv_sec = 1 + (1 << i);
-
- ret = select (sock + 1, &fdset, NULL, NULL, &tv);
- if (ret < 0 && errno != EINTR) {
- close(sock);
- goto out;
- }
- if (ret == 1) {
- ret = process_reply (context,
- auth_context,
- sock,
- result_code,
- result_code_string,
- result_string,
- hi->hostname);
- if (ret == 0)
- done = 1;
- else if (i > 0 && ret == KRB5KRB_AP_ERR_MUT_FAIL)
- replied = 1;
- } else {
- ret = KRB5_KDC_UNREACH;
- }
- }
- close (sock);
- }
- }
-
- out:
- krb5_krbhst_free (context, handle);
- krb5_auth_con_free (context, auth_context);
- if (done)
- return 0;
- else {
- if (ret == KRB5_KDC_UNREACH)
- krb5_set_error_string(context,
- "unable to reach any changepw server "
- " in realm %s", realm);
- return ret;
- }
-}
-
-const char *
-krb5_passwd_result_to_string (krb5_context context,
- int result)
-{
- static const char *strings[] = {
- "Success",
- "Malformed",
- "Hard error",
- "Auth error",
- "Soft error"
- };
-
- if (result < 0 || result > KRB5_KPASSWD_SOFTERROR)
- return "unknown result code";
- else
- return strings[result];
-}
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