static heim_number_t
parse_number(struct parse_ctx *ctx)
{
int number = 0, neg = 1;
if (ctx->p >= ctx->pend)
return NULL;
if (*ctx->p == '-') {
if (ctx->p + 1 >= ctx->pend)
return NULL;
neg = -1;
ctx->p += 1;
}
while (ctx->p < ctx->pend) {
if (is_number(*ctx->p)) {
number = (number * 10) + (*ctx->p - '0');
} else {
break;
}
ctx->p += 1;
}
return heim_number_create(number * neg);
}
/**
* Delete a key and its value from the DB
*
*
* @param db Open DB handle
* @param key Key
* @param error Output error object
*
* @return 0 on success, system error otherwise
*
* @addtogroup heimbase
*/
int
heim_db_delete_key(heim_db_t db, heim_string_t table, heim_data_t key,
heim_error_t *error)
{
heim_string_t key64 = NULL;
int ret;
if (error != NULL)
*error = NULL;
if (table == NULL)
table = HSTR("");
if (heim_get_tid(db) != HEIM_TID_DB)
return EINVAL;
if (db->plug->delf == NULL)
return EBADF;
if (!db->in_transaction) {
ret = heim_db_begin(db, 0, error);
if (ret)
goto err;
heim_assert(db->in_transaction, "Internal error");
ret = heim_db_delete_key(db, table, key, error);
if (ret) {
(void) heim_db_rollback(db, NULL);
return ret;
}
return heim_db_commit(db, error);
}
/* Transaction emulation */
heim_assert(db->set_keys != NULL, "Internal error");
key64 = to_base64(key, error);
if (key64 == NULL)
return HEIM_ENOMEM(error);
if (db->ro_tx) {
ret = heim_db_begin(db, 0, error);
if (ret)
goto err;
}
ret = heim_path_create(db->del_keys, 29, heim_number_create(1), error, table, key64, NULL);
if (ret)
goto err;
heim_path_delete(db->set_keys, error, table, key64, NULL);
heim_release(key64);
return 0;
err:
heim_release(key64);
return HEIM_ERROR(error, ret,
(ret, N_("Could not set a dict value while while "
"deleting a DB value", "")));
}
heim_error_t
heim_error_create_enomem(void)
{
/* This is an immediate object; see heim_number_create() */
return (heim_error_t)heim_number_create(ENOMEM);
}
static krb5_error_code
an2ln_def_plug_an2ln(void *plug_ctx, krb5_context context,
const char *rule,
krb5_const_principal aname,
set_result_f set_res_f, void *set_res_ctx)
{
krb5_error_code ret;
const char *an2ln_db_fname;
heim_db_t dbh = NULL;
heim_dict_t db_options;
heim_data_t k, v;
heim_error_t error;
char *unparsed = NULL;
char *value = NULL;
_krb5_load_db_plugins(context);
heim_base_once_f(&sorted_text_db_init_once, NULL, sorted_text_db_init_f);
if (strncmp(rule, "DB:", strlen("DB:") != 0))
return KRB5_PLUGIN_NO_HANDLE;
an2ln_db_fname = &rule[strlen("DB:")];
if (!*an2ln_db_fname)
return KRB5_PLUGIN_NO_HANDLE;
ret = krb5_unparse_name(context, aname, &unparsed);
if (ret)
return ret;
db_options = heim_dict_create(11);
if (db_options != NULL)
heim_dict_set_value(db_options, HSTR("read-only"),
heim_number_create(1));
dbh = heim_db_create(NULL, an2ln_db_fname, db_options, &error);
if (dbh == NULL) {
krb5_set_error_message(context, heim_error_get_code(error),
N_("Couldn't open aname2lname-text-db", ""));
ret = KRB5_PLUGIN_NO_HANDLE;
goto cleanup;
}
/* Binary search; file should be sorted (in C locale) */
k = heim_data_ref_create(unparsed, strlen(unparsed), NULL);
if (k == NULL)
return krb5_enomem(context);
v = heim_db_copy_value(dbh, NULL, k, &error);
heim_release(k);
if (v == NULL && error != NULL) {
krb5_set_error_message(context, heim_error_get_code(error),
N_("Lookup in aname2lname-text-db failed", ""));
ret = heim_error_get_code(error);
goto cleanup;
} else if (v == NULL) {
ret = KRB5_PLUGIN_NO_HANDLE;
goto cleanup;
} else {
/* found */
if (heim_data_get_length(v) == 0) {
krb5_set_error_message(context, ret,
N_("Principal mapped to empty username", ""));
ret = KRB5_NO_LOCALNAME;
goto cleanup;
}
ret = set_res_f(set_res_ctx, heim_data_get_ptr(v));
heim_release(v);
}
cleanup:
heim_release(dbh);
free(unparsed);
free(value);
return ret;
}
