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kadmin: refactor do_ext_keytab for common cleanup

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Refactor do_ext_keytab() so that all cleanup is performed by jumping
to the out label on error.

Change-Id: Ic0c0f57e8ebabf30b49519f14743370d1c1672d2
This commit is contained in:
Jeffrey Altman
2015-03-12 22:20:24 -04:00
parent 14195658a4
commit 1bfb759a64
1 changed files with 11 additions and 14 deletions
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25
kadmin/ext.c
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@@ -46,7 +46,7 @@ do_ext_keytab(krb5_principal principal, void *data)
struct ext_keytab_data *e = data; struct ext_keytab_data *e = data;
krb5_keytab_entry *keys = NULL; krb5_keytab_entry *keys = NULL;
krb5_keyblock *k = NULL; krb5_keyblock *k = NULL;
int i; size_t i;
int n_k = 0; int n_k = 0;
ret = kadm5_get_principal(kadm_handle, principal, &princ, ret = kadm5_get_principal(kadm_handle, principal, &princ,
@@ -57,9 +57,8 @@ do_ext_keytab(krb5_principal principal, void *data)
if (princ.n_key_data) { if (princ.n_key_data) {
keys = calloc(sizeof(*keys), princ.n_key_data); keys = calloc(sizeof(*keys), princ.n_key_data);
if (keys == NULL) { if (keys == NULL) {
kadm5_free_principal_ent(kadm_handle, &princ); ret = krb5_enomem(context);
krb5_clear_error_message(context); goto out;
return ENOMEM;
} }
for (i = 0; i < princ.n_key_data; i++) { for (i = 0; i < princ.n_key_data; i++) {
krb5_key_data *kd = &princ.key_data[i]; krb5_key_data *kd = &princ.key_data[i];
@@ -86,15 +85,13 @@ do_ext_keytab(krb5_principal principal, void *data)
if (n_k == 0) { if (n_k == 0) {
/* Probably lack get-keys privilege, but we may be able to set keys */ /* Probably lack get-keys privilege, but we may be able to set keys */
ret = kadm5_randkey_principal(kadm_handle, principal, &k, &n_k); ret = kadm5_randkey_principal(kadm_handle, principal, &k, &n_k);
if (ret) { if (ret)
kadm5_free_principal_ent(kadm_handle, &princ); goto out;
return ret;
}
keys = calloc(sizeof(*keys), n_k); keys = calloc(sizeof(*keys), n_k);
if (keys == NULL) { if (keys == NULL) {
kadm5_free_principal_ent(kadm_handle, &princ); ret = krb5_enomem(context);
krb5_clear_error_message(context); goto out;
return ENOMEM;
} }
for (i = 0; i < n_k; i++) { for (i = 0; i < n_k; i++) {
keys[i].principal = principal; keys[i].principal = principal;
@@ -110,13 +107,13 @@ do_ext_keytab(krb5_principal principal, void *data)
krb5_warn(context, ret, "krb5_kt_add_entry(%d)", i); krb5_warn(context, ret, "krb5_kt_add_entry(%d)", i);
} }
out:
kadm5_free_principal_ent(kadm_handle, &princ);
if (k) { if (k) {
memset(k, 0, n_k * sizeof(*k)); memset(k, 0, n_k * sizeof(*k));
free(k); free(k);
} }
if (keys) free(keys);
free(keys);
kadm5_free_principal_ent(kadm_handle, &princ);
return 0; return 0;
} }