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remove arbitrary limit

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@4488 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Assar Westerlund
1998-03-01 02:44:29 +00:00
parent 37fd642d03
commit e99f4c1720
5 changed files with 330 additions and 90 deletions
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85
lib/krb5/mk_priv.c
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@@ -47,10 +47,11 @@ krb5_mk_priv(krb5_context context,
krb5_data *outbuf,
/*krb5_replay_data*/ void *outdata)
{
krb5_error_code r;
krb5_error_code ret;
KRB_PRIV s;
EncKrbPrivPart part;
u_char buf[10240];
u_char *buf;
size_t buf_size;
size_t len;
unsigned tmp_seq;
krb5_keyblock *key;
@@ -71,9 +72,9 @@ krb5_mk_priv(krb5_context context,
if (auth_context->enctype)
enctype = auth_context->enctype;
else {
r = krb5_keytype_to_etype (context, key->keytype, &enctype);
if (r)
return r;
ret = krb5_keytype_to_etype (context, key->keytype, &enctype);
if (ret)
return ret;
}
krb5_us_timeofday (context, &sec, &usec);
@@ -93,28 +94,78 @@ krb5_mk_priv(krb5_context context,
part.s_address = auth_context->local_address;
part.r_address = auth_context->remote_address;
r = encode_EncKrbPrivPart (buf + sizeof(buf) - 1, sizeof(buf), &part, &len);
if (r)
return r;
buf_size = 1024;
buf = malloc (buf_size);
if (buf == NULL)
return ENOMEM;
krb5_data_zero (&s.enc_part.cipher);
do {
ret = encode_EncKrbPrivPart (buf + buf_size - 1, buf_size,
&part, &len);
if (ret) {
if (ret == ASN1_OVERFLOW) {
u_char *tmp;
buf_size *= 2;
tmp = realloc (buf, buf_size);
if (tmp == NULL) {
ret = ENOMEM;
goto fail;
}
buf = tmp;
} else {
goto fail;
}
}
} while(ret == ASN1_OVERFLOW);
s.pvno = 5;
s.msg_type = krb_priv;
s.enc_part.etype = enctype;
s.enc_part.kvno = NULL;
r = krb5_encrypt (context, buf + sizeof(buf) - len, len,
ret = krb5_encrypt (context, buf + buf_size - len, len,
enctype, key, &s.enc_part.cipher);
if (r)
return r;
if (ret) {
free(buf);
return ret;
}
r = encode_KRB_PRIV (buf + sizeof(buf) - 1, sizeof(buf), &s, &len);
do {
ret = encode_KRB_PRIV (buf + buf_size - 1, buf_size, &s, &len);
if (ret){
if (ret == ASN1_OVERFLOW) {
u_char *tmp;
buf_size *= 2;
tmp = realloc (tmp, buf_size);
if (tmp == NULL) {
ret = ENOMEM;
goto fail;
}
buf = tmp;
} else {
goto fail;
}
}
} while(ret == ASN1_OVERFLOW);
krb5_data_free (&s.enc_part.cipher);
if (r)
return r;
outbuf->length = len;
outbuf->data = malloc (len);
if (outbuf->data == NULL)
return ENOMEM;
memcpy (outbuf->data, buf + sizeof(buf) - len, len);
if (outbuf->data == NULL) {
free(buf);
return ENOMEM;
}
memcpy (outbuf->data, buf + buf_size - len, len);
free (buf);
return 0;
fail:
free (buf);
krb5_data_free (&s.enc_part.cipher);
return ret;
}