int
mm_answer_keyverify(int sock, Buffer *m)
{
Key *key;
u_char *signature, *data, *blob;
u_int signaturelen, datalen, bloblen;
int verified = 0;
int valid_data = 0;
blob = buffer_get_string(m, &bloblen);
signature = buffer_get_string(m, &signaturelen);
data = buffer_get_string(m, &datalen);
if (hostbased_cuser == NULL || hostbased_chost == NULL ||
!monitor_allowed_key(blob, bloblen))
fatal("%s: bad key, not previously allowed", __func__);
key = key_from_blob(blob, bloblen);
if (key == NULL)
fatal("%s: bad public key blob", __func__);
switch (key_blobtype) {
case MM_USERKEY:
valid_data = monitor_valid_userblob(data, datalen);
break;
case MM_HOSTKEY:
valid_data = monitor_valid_hostbasedblob(data, datalen,
hostbased_cuser, hostbased_chost);
break;
default:
valid_data = 0;
break;
}
if (!valid_data)
fatal("%s: bad signature data blob", __func__);
verified = key_verify(key, signature, signaturelen, data, datalen);
debug3("%s: key %p signature %s",
__func__, key, (verified == 1) ? "verified" : "unverified");
/* If auth was successful then record key to ensure it isn't reused */
if (verified == 1 && key_blobtype == MM_USERKEY)
auth2_record_userkey(authctxt, key);
else
key_free(key);
free(blob);
free(signature);
free(data);
auth_method = key_blobtype == MM_USERKEY ? "publickey" : "hostbased";
monitor_reset_key_state();
buffer_clear(m);
buffer_put_int(m, verified);
mm_request_send(sock, MONITOR_ANS_KEYVERIFY, m);
return (verified == 1);
}
int
mm_answer_keyverify(int sock, struct sshbuf *m)
{
struct sshkey *key;
u_char *signature, *data, *blob;
size_t signaturelen, datalen, bloblen;
int r, ret, valid_data = 0;
if ((r = sshbuf_get_string(m, &blob, &bloblen)) != 0 ||
(r = sshbuf_get_string(m, &signature, &signaturelen)) != 0 ||
(r = sshbuf_get_string(m, &data, &datalen)) != 0)
fatal("%s: buffer error: %s", __func__, ssh_err(r));
if (hostbased_cuser == NULL || hostbased_chost == NULL ||
!monitor_allowed_key(blob, bloblen))
fatal("%s: bad key, not previously allowed", __func__);
if ((r = sshkey_from_blob(blob, bloblen, &key)) != 0)
fatal("%s: bad public key blob: %s", __func__, ssh_err(r));
switch (key_blobtype) {
case MM_USERKEY:
valid_data = monitor_valid_userblob(data, datalen);
break;
case MM_HOSTKEY:
valid_data = monitor_valid_hostbasedblob(data, datalen,
hostbased_cuser, hostbased_chost);
break;
default:
valid_data = 0;
break;
}
if (!valid_data)
fatal("%s: bad signature data blob", __func__);
ret = sshkey_verify(key, signature, signaturelen, data, datalen,
active_state->compat);
debug3("%s: key %p signature %s",
__func__, key, (r == 0) ? "verified" : "unverified");
/* If auth was successful then record key to ensure it isn't reused */
if (ret == 0)
auth2_record_userkey(authctxt, key);
else
sshkey_free(key);
free(blob);
free(signature);
free(data);
auth_method = key_blobtype == MM_USERKEY ? "publickey" : "hostbased";
monitor_reset_key_state();
sshbuf_reset(m);
if ((r = sshbuf_put_u32(m, ret)) != 0)
fatal("%s: buffer error: %s", __func__, ssh_err(r));
mm_request_send(sock, MONITOR_ANS_KEYVERIFY, m);
return ret == 0;
}
int
mm_answer_keyverify(int sock, struct sshbuf *m)
{
struct sshkey *key;
u_char *signature, *data, *blob;
size_t signaturelen, datalen, bloblen;
int r, ret, valid_data = 0, encoded_ret;
if ((r = sshbuf_get_string(m, &blob, &bloblen)) != 0 ||
(r = sshbuf_get_string(m, &signature, &signaturelen)) != 0 ||
(r = sshbuf_get_string(m, &data, &datalen)) != 0)
fatal("%s: buffer error: %s", __func__, ssh_err(r));
if (hostbased_cuser == NULL || hostbased_chost == NULL ||
!monitor_allowed_key(blob, bloblen))
fatal("%s: bad key, not previously allowed", __func__);
/* XXX use sshkey_froms here; need to change key_blob, etc. */
if ((r = sshkey_from_blob(blob, bloblen, &key)) != 0)
fatal("%s: bad public key blob: %s", __func__, ssh_err(r));
switch (key_blobtype) {
case MM_USERKEY:
valid_data = monitor_valid_userblob(data, datalen);
auth_method = "publickey";
break;
case MM_HOSTKEY:
valid_data = monitor_valid_hostbasedblob(data, datalen,
hostbased_cuser, hostbased_chost);
auth_method = "hostbased";
break;
default:
valid_data = 0;
break;
}
if (!valid_data)
fatal("%s: bad signature data blob", __func__);
ret = sshkey_verify(key, signature, signaturelen, data, datalen,
active_state->compat);
debug3("%s: %s %p signature %s", __func__, auth_method, key,
(ret == 0) ? "verified" : "unverified");
auth2_record_key(authctxt, ret == 0, key);
free(blob);
free(signature);
free(data);
monitor_reset_key_state();
sshkey_free(key);
sshbuf_reset(m);
/* encode ret != 0 as positive integer, since we're sending u32 */
encoded_ret = (ret != 0);
if ((r = sshbuf_put_u32(m, encoded_ret)) != 0)
fatal("%s: buffer error: %s", __func__, ssh_err(r));
mm_request_send(sock, MONITOR_ANS_KEYVERIFY, m);
return ret == 0;
}