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Merge pull request #711 from nicowilliams/master

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Fix gss_krb5_copy_ccache() (broken by MEM:anon)
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Nico Williams
2020-05-13 21:57:25 -05:00
committed by GitHub
parent 001cf39374
commit 1243ea6a9a
2 changed files with 19 additions and 53 deletions
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70
lib/gssapi/mech/gss_krb5.c
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@@ -27,67 +27,33 @@
*/
#include "mech_locl.h"
#include <krb5.h>
#include <roken.h>
#include "krb5/gsskrb5_locl.h"
GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
gss_krb5_copy_ccache(OM_uint32 *minor_status,
gss_cred_id_t cred,
krb5_ccache out)
{
gss_buffer_set_t data_set = GSS_C_NO_BUFFER_SET;
gss_key_value_element_desc cred_store_kvs[1];
gss_key_value_set_desc cred_store;
krb5_context context;
krb5_error_code kret;
krb5_ccache id;
OM_uint32 ret;
char *str = NULL;
OM_uint32 major = GSS_S_FAILURE;
char *fullname = NULL;
ret = gss_inquire_cred_by_oid(minor_status,
cred,
GSS_KRB5_COPY_CCACHE_X,
&data_set);
if (ret)
return ret;
if (data_set == GSS_C_NO_BUFFER_SET || data_set->count < 1) {
gss_release_buffer_set(minor_status, &data_set);
*minor_status = EINVAL;
return GSS_S_FAILURE;
GSSAPI_KRB5_INIT(&context);
*minor_status = krb5_cc_get_full_name(context, out, &fullname);
if (*minor_status == 0) {
cred_store_kvs[0].key = "ccache";
cred_store_kvs[0].value = fullname;
cred_store.count = 1;
cred_store.elements = cred_store_kvs;
major = gss_store_cred_into2(minor_status, cred, GSS_C_INITIATE,
GSS_KRB5_MECHANISM,
GSS_C_STORE_CRED_OVERWRITE, &cred_store,
NULL, NULL, NULL);
free(fullname);
}
kret = krb5_init_context(&context);
if (kret) {
*minor_status = kret;
gss_release_buffer_set(minor_status, &data_set);
return GSS_S_FAILURE;
}
kret = asprintf(&str, "%.*s", (int)data_set->elements[0].length,
(char *)data_set->elements[0].value);
gss_release_buffer_set(minor_status, &data_set);
if (kret < 0 || str == NULL) {
*minor_status = ENOMEM;
return GSS_S_FAILURE;
}
kret = krb5_cc_resolve(context, str, &id);
free(str);
if (kret) {
*minor_status = kret;
return GSS_S_FAILURE;
}
kret = krb5_cc_copy_cache(context, id, out);
krb5_cc_close(context, id);
krb5_free_context(context);
if (kret) {
*minor_status = kret;
return GSS_S_FAILURE;
}
return ret;
return major;
}
GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL