1 /*
2 * Copyright (c) 2014 DeNA Co., Ltd.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to
6 * deal in the Software without restriction, including without limitation the
7 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
8 * sell copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
20 * IN THE SOFTWARE.
21 */
22 #include <inttypes.h>
23 #include <stdio.h>
24 #include <string.h>
25 #include "h2o.h"
26 #include "h2o/configurator.h"
27
28 struct expires_configurator_t {
29 h2o_configurator_t super;
30 h2o_expires_args_t **args;
31 h2o_expires_args_t *_args_stack[H2O_CONFIGURATOR_NUM_LEVELS + 1];
32 };
33
on_config_expires(h2o_configurator_command_t * cmd,h2o_configurator_context_t * ctx,yoml_t * node)34 static int on_config_expires(h2o_configurator_command_t *cmd, h2o_configurator_context_t *ctx, yoml_t *node)
35 {
36 struct expires_configurator_t *self = (void *)cmd->configurator;
37 uint64_t value;
38 char unit[32];
39
40 if (strcasecmp(node->data.scalar, "OFF") == 0) {
41 free(*self->args);
42 *self->args = NULL;
43 } else if (sscanf(node->data.scalar, "%" SCNu64 " %31s", &value, unit) == 2) {
44 /* convert value to seconds depending on the unit */
45 if (strncasecmp(unit, H2O_STRLIT("second")) == 0) {
46 /* ok */
47 } else if (strncasecmp(unit, H2O_STRLIT("minute")) == 0) {
48 value *= 60;
49 } else if (strncasecmp(unit, H2O_STRLIT("hour")) == 0) {
50 value *= 60 * 60;
51 } else if (strncasecmp(unit, H2O_STRLIT("day")) == 0) {
52 value *= 24 * 60 * 60;
53 } else if (strncasecmp(unit, H2O_STRLIT("month")) == 0) {
54 value *= 30 * 24 * 60 * 60;
55 } else if (strncasecmp(unit, H2O_STRLIT("year")) == 0) {
56 value *= 365 * 30 * 24 * 60 * 60;
57 } else {
58 /* TODO add support for H2O_EXPIRES_MODE_MAX_ABSOLUTE that sets the Expires header? */
59 h2o_configurator_errprintf(cmd, node, "unknown unit:`%s` (see --help)", unit);
60 return -1;
61 }
62 /* save the value */
63 if (*self->args == NULL)
64 *self->args = h2o_mem_alloc(sizeof(**self->args));
65 (*self->args)->mode = H2O_EXPIRES_MODE_MAX_AGE;
66 (*self->args)->data.max_age = value;
67 } else {
68 h2o_configurator_errprintf(cmd, node,
69 "failed to parse the value, should be in form of: `<number> <unit>` or `OFF` (see --help)");
70 return -1;
71 }
72
73 return 0;
74 }
75
on_config_enter(h2o_configurator_t * _self,h2o_configurator_context_t * ctx,yoml_t * node)76 static int on_config_enter(h2o_configurator_t *_self, h2o_configurator_context_t *ctx, yoml_t *node)
77 {
78 struct expires_configurator_t *self = (void *)_self;
79
80 if (self->args[0] != NULL) {
81 /* duplicate */
82 assert(self->args[0]->mode == H2O_EXPIRES_MODE_MAX_AGE);
83 self->args[1] = h2o_mem_alloc(sizeof(**self->args));
84 *self->args[1] = *self->args[0];
85 } else {
86 self->args[1] = NULL;
87 }
88 ++self->args;
89 return 0;
90 }
91
on_config_exit(h2o_configurator_t * _self,h2o_configurator_context_t * ctx,yoml_t * node)92 static int on_config_exit(h2o_configurator_t *_self, h2o_configurator_context_t *ctx, yoml_t *node)
93 {
94 struct expires_configurator_t *self = (void *)_self;
95
96 if (*self->args != NULL) {
97 /* setup */
98 if (ctx->pathconf != NULL) {
99 h2o_expires_register(ctx->pathconf, *self->args);
100 }
101 /* destruct */
102 assert((*self->args)->mode == H2O_EXPIRES_MODE_MAX_AGE);
103 free(*self->args);
104 *self->args = NULL;
105 }
106
107 --self->args;
108 return 0;
109 }
110
h2o_expires_register_configurator(h2o_globalconf_t * conf)111 void h2o_expires_register_configurator(h2o_globalconf_t *conf)
112 {
113 struct expires_configurator_t *c = (void *)h2o_configurator_create(conf, sizeof(*c));
114
115 /* set default vars */
116 c->args = c->_args_stack;
117
118 /* setup handlers */
119 c->super.enter = on_config_enter;
120 c->super.exit = on_config_exit;
121 h2o_configurator_define_command(&c->super, "expires", H2O_CONFIGURATOR_FLAG_ALL_LEVELS | H2O_CONFIGURATOR_FLAG_EXPECT_SCALAR,
122 on_config_expires);
123 }
124