147 lines
3.6 KiB
C
147 lines
3.6 KiB
C
#include "first.h"
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#include <stdlib.h>
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#include <string.h>
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#include "plugin.h"
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#include "base.h"
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#include "log.h"
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#include "buffer.h"
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#include "array.h"
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/**
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* this is a skeleton for a lighttpd plugin
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*
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* just replaces every occurrence of 'skeleton' by your plugin name
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*
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* e.g. in vim:
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*
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* :%s/skeleton/myhandler/
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*
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*/
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/* plugin config for all request/connections */
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typedef struct {
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const array *match;
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} plugin_config;
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typedef struct {
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PLUGIN_DATA;
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plugin_config defaults;
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plugin_config conf;
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} plugin_data;
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#if 0 /* (needed if module keeps state for request) */
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typedef struct {
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size_t foo;
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} handler_ctx;
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static handler_ctx * handler_ctx_init() {
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handler_ctx * hctx = calloc(1, sizeof(*hctx));
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force_assert(hctx);
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return hctx;
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}
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static void handler_ctx_free(handler_ctx *hctx) {
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free(hctx);
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}
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#endif
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/* init the plugin data */
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INIT_FUNC(mod_skeleton_init) {
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return calloc(1, sizeof(plugin_data));
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}
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/* handle plugin config and check values */
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static void mod_skeleton_merge_config_cpv(plugin_config * const pconf, const config_plugin_value_t * const cpv) {
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switch (cpv->k_id) { /* index into static config_plugin_keys_t cpk[] */
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case 0: /* skeleton.array */
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pconf->match = cpv->v.a;
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break;
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default:/* should not happen */
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return;
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}
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}
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static void mod_skeleton_merge_config(plugin_config * const pconf, const config_plugin_value_t *cpv) {
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do {
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mod_skeleton_merge_config_cpv(pconf, cpv);
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} while ((++cpv)->k_id != -1);
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}
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static void mod_skeleton_patch_config(request_st * const r, plugin_data * const p) {
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p->conf = p->defaults; /* copy small struct instead of memcpy() */
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/*memcpy(&p->conf, &p->defaults, sizeof(plugin_config));*/
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for (int i = 1, used = p->nconfig; i < used; ++i) {
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if (config_check_cond(r, (uint32_t)p->cvlist[i].k_id))
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mod_skeleton_merge_config(&p->conf, p->cvlist+p->cvlist[i].v.u2[0]);
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}
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}
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SETDEFAULTS_FUNC(mod_skeleton_set_defaults) {
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static const config_plugin_keys_t cpk[] = {
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{ CONST_STR_LEN("skeleton.array"),
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T_CONFIG_ARRAY_VLIST,
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T_CONFIG_SCOPE_CONNECTION }
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,{ NULL, 0,
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T_CONFIG_UNSET,
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T_CONFIG_SCOPE_UNSET }
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};
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plugin_data * const p = p_d;
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if (!config_plugin_values_init(srv, p, cpk, "mod_skeleton"))
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return HANDLER_ERROR;
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/* initialize p->defaults from global config context */
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if (p->nconfig > 0 && p->cvlist->v.u2[1]) {
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const config_plugin_value_t *cpv = p->cvlist + p->cvlist->v.u2[0];
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if (-1 != cpv->k_id)
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mod_skeleton_merge_config(&p->defaults, cpv);
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}
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return HANDLER_GO_ON;
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}
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URIHANDLER_FUNC(mod_skeleton_uri_handler) {
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plugin_data * const p = p_d;
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/* determine whether or not module participates in request */
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if (NULL != r->handler_module) return HANDLER_GO_ON;
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if (buffer_string_is_empty(&r->uri.path)) return HANDLER_GO_ON;
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/* get module config for request */
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mod_skeleton_patch_config(r, p);
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if (NULL == p->conf.match
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|| NULL == array_match_value_suffix(p->conf.match, &r->uri.path)) {
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return HANDLER_GO_ON;
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}
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/* module participates in request; business logic here */
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r->http_status = 403; /* example: reject request with 403 Forbidden */
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return HANDLER_FINISHED;
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}
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/* this function is called at dlopen() time and inits the callbacks */
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int mod_skeleton_plugin_init(plugin *p);
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int mod_skeleton_plugin_init(plugin *p) {
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p->version = LIGHTTPD_VERSION_ID;
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p->name = "skeleton";
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p->init = mod_skeleton_init;
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p->set_defaults= mod_skeleton_set_defaults;
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p->handle_uri_clean = mod_skeleton_uri_handler;
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return 0;
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}
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