/* * 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); }