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/*
* Copyright (c) 2015-2016 DeNA Co., Ltd., Kazuho Oku
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "h2o.h"
#include "h2o/configurator.h"
struct errordoc_configurator_t {
h2o_configurator_t super;
h2o_mem_pool_t pool;
H2O_VECTOR(h2o_errordoc_t) * vars, _vars_stack[H2O_CONFIGURATOR_NUM_LEVELS + 1];
};
static int scan_and_check_status(h2o_configurator_command_t *cmd, yoml_t *value, int *slot)
{
if (value->type != YOML_TYPE_SCALAR) {
h2o_configurator_errprintf(cmd, value, "status must be must be either of: scalar, sequence of scalar");
return -1;
}
if (h2o_configurator_scanf(cmd, value, "%d", slot) != 0)
return -1;
if (!(400 <= *slot && *slot <= 599)) {
h2o_configurator_errprintf(cmd, value, "status must be within range of 400 to 599");
return -1;
}
return 0;
}
static int register_errordoc(h2o_configurator_command_t *cmd, h2o_configurator_context_t *ctx, yoml_t *hash)
{
struct errordoc_configurator_t *self = (void *)cmd->configurator;
int status[200];
size_t status_len = 0;
int parsed;
const char *url = NULL;
size_t i, j, k;
yoml_t *key, *value;
for (i = 0; i != hash->data.mapping.size; ++i) {
key = hash->data.mapping.elements[i].key;
value = hash->data.mapping.elements[i].value;
if (key->type != YOML_TYPE_SCALAR)
goto UnknownKeyError;
if (strcmp(key->data.scalar, "status") == 0) {
if (status_len != 0)
goto KeyAlreadyDefinedError;
if (value->type == YOML_TYPE_SEQUENCE) {
if (value->data.sequence.size == 0) {
h2o_configurator_errprintf(cmd, value, "status sequence must not be empty");
return -1;
}
for (j = 0; j != value->data.sequence.size; ++j) {
if (scan_and_check_status(cmd, value->data.sequence.elements[j], &parsed) != 0)
return -1;
/* check the scanned status hasn't already appeared */
for (k = 0; k != status_len; ++k) {
if (status[k] == parsed) {
h2o_configurator_errprintf(cmd, value, "status %d appears multiple times", status[k]);
return -1;
}
}
status[status_len++] = parsed;
}
} else {
if (scan_and_check_status(cmd, value, &parsed) != 0)
return -1;
status[status_len++] = parsed;
}
} else if (strcmp(key->data.scalar, "url") == 0) {
if (url != NULL)
goto KeyAlreadyDefinedError;
if (value->type != YOML_TYPE_SCALAR) {
h2o_configurator_errprintf(cmd, value, "URL must be a scalar");
return -1;
}
url = value->data.scalar;
} else {
goto UnknownKeyError;
}
}
if (status_len == 0) {
h2o_configurator_errprintf(cmd, hash, "mandatory key `status` is not defined");
return -1;
}
if (url == NULL) {
h2o_configurator_errprintf(cmd, hash, "mandatory key `url` is not defined");
return -1;
}
h2o_iovec_t _url = h2o_strdup(&self->pool, url, SIZE_MAX);
for (i = 0; i != status_len; ++i){
/* register */
h2o_vector_reserve(&self->pool, self->vars, self->vars->size + 1);
h2o_errordoc_t *errordoc = self->vars->entries + self->vars->size++;
errordoc->status = status[i];
errordoc->url = _url;
}
return 0;
UnknownKeyError:
h2o_configurator_errprintf(cmd, key, "key must be either of: `status`, `url`");
return -1;
KeyAlreadyDefinedError:
h2o_configurator_errprintf(cmd, key, "the key cannot be defined more than once");
return -1;
}
static int on_config_errordoc(h2o_configurator_command_t *cmd, h2o_configurator_context_t *ctx, yoml_t *node)
{
switch (node->type) {
case YOML_TYPE_SEQUENCE: {
size_t i;
for (i = 0; i != node->data.sequence.size; ++i) {
yoml_t *e = node->data.sequence.elements[i];
if (e->type != YOML_TYPE_MAPPING) {
h2o_configurator_errprintf(cmd, e, "element must be a mapping");
return -1;
}
if (register_errordoc(cmd, ctx, e) != 0)
return -1;
}
return 0;
}
case YOML_TYPE_MAPPING:
return register_errordoc(cmd, ctx, node);
default:
break;
}
h2o_configurator_errprintf(cmd, node, "argument must be either of: sequence, mapping");
return -1;
}
static int on_config_enter(h2o_configurator_t *_self, h2o_configurator_context_t *ctx, yoml_t *node)
{
struct errordoc_configurator_t *self = (void *)_self;
if (self->vars == self->_vars_stack) {
/* entering global level */
h2o_mem_init_pool(&self->pool);
}
/* copy vars */
memset(&self->vars[1], 0, sizeof(self->vars[1]));
h2o_vector_reserve(&self->pool, &self->vars[1], self->vars[0].size);
h2o_memcpy(self->vars[1].entries, self->vars[0].entries, sizeof(self->vars[0].entries[0]) * self->vars[0].size);
self->vars[1].size = self->vars[0].size;
++self->vars;
return 0;
}
static int on_config_exit(h2o_configurator_t *_self, h2o_configurator_context_t *ctx, yoml_t *node)
{
struct errordoc_configurator_t *self = (void *)_self;
if (ctx->pathconf != NULL && self->vars->size != 0)
h2o_errordoc_register(ctx->pathconf, self->vars->entries, self->vars->size);
--self->vars;
if (self->vars == self->_vars_stack) {
/* exitting global level */
h2o_mem_clear_pool(&self->pool);
}
return 0;
}
void h2o_errordoc_register_configurator(h2o_globalconf_t *conf)
{
struct errordoc_configurator_t *c = (void *)h2o_configurator_create(conf, sizeof(*c));
/* set default vars */
c->vars = c->_vars_stack;
/* setup handlers */
c->super.enter = on_config_enter;
c->super.exit = on_config_exit;
/* reproxy: ON | OFF */
h2o_configurator_define_command(&c->super, "error-doc", H2O_CONFIGURATOR_FLAG_ALL_LEVELS, on_config_errordoc);
}
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