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#include "first.h"
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "buffer.h"
#include "http_header.h"
#include "log.h"
#include "plugin.h"
#include "request.h"
#include "stat_cache.h"
typedef struct {
const array *indexfiles;
} plugin_config;
typedef struct {
PLUGIN_DATA;
plugin_config defaults;
plugin_config conf;
} plugin_data;
INIT_FUNC(mod_indexfile_init) {
return calloc(1, sizeof(plugin_data));
}
static void mod_indexfile_merge_config_cpv(plugin_config * const pconf, const config_plugin_value_t * const cpv) {
switch (cpv->k_id) { /* index into static config_plugin_keys_t cpk[] */
case 0: /* index-file.names */
case 1: /* server.indexfiles */
pconf->indexfiles = cpv->v.a;
break;
default:/* should not happen */
return;
}
}
static void mod_indexfile_merge_config(plugin_config * const pconf, const config_plugin_value_t *cpv) {
do {
mod_indexfile_merge_config_cpv(pconf, cpv);
} while ((++cpv)->k_id != -1);
}
static void mod_indexfile_patch_config(request_st * const r, plugin_data * const p) {
p->conf = p->defaults; /* copy small struct instead of memcpy() */
/*memcpy(&p->conf, &p->defaults, sizeof(plugin_config));*/
for (int i = 1, used = p->nconfig; i < used; ++i) {
if (config_check_cond(r, (uint32_t)p->cvlist[i].k_id))
mod_indexfile_merge_config(&p->conf,p->cvlist+p->cvlist[i].v.u2[0]);
}
}
SETDEFAULTS_FUNC(mod_indexfile_set_defaults) {
static const config_plugin_keys_t cpk[] = {
{ CONST_STR_LEN("index-file.names"),
T_CONFIG_ARRAY_VLIST,
T_CONFIG_SCOPE_CONNECTION }
,{ CONST_STR_LEN("server.indexfiles"),
T_CONFIG_ARRAY_VLIST,
T_CONFIG_SCOPE_CONNECTION }
,{ NULL, 0,
T_CONFIG_UNSET,
T_CONFIG_SCOPE_UNSET }
};
plugin_data * const p = p_d;
if (!config_plugin_values_init(srv, p, cpk, "mod_indexfile"))
return HANDLER_ERROR;
/* initialize p->defaults from global config context */
if (p->nconfig > 0 && p->cvlist->v.u2[1]) {
const config_plugin_value_t *cpv = p->cvlist + p->cvlist->v.u2[0];
if (-1 != cpv->k_id)
mod_indexfile_merge_config(&p->defaults, cpv);
}
return HANDLER_GO_ON;
}
__attribute_nonnull__()
static handler_t mod_indexfile_tryfiles(request_st * const r, const array * const indexfiles) {
for (uint32_t k = 0; k < indexfiles->used; ++k) {
const buffer * const v = &((data_string *)indexfiles->data[k])->value;
buffer * const b = (v->ptr[0] != '/')
? &r->physical.path
: &r->physical.doc_root; /* index file relative to doc_root */
/* if the index-file starts with a prefix as use this file as
* index-generator */
/* temporarily append to base-path buffer to check existence */
const uint32_t len = buffer_clen(b);
buffer_append_path_len(b, BUF_PTR_LEN(v));
const stat_cache_st * const st = stat_cache_path_stat(b);
buffer_truncate(b, len);
if (NULL == st) {
switch (errno) {
case ENOENT:
case ENOTDIR:
continue;
case EACCES:
r->http_status = 403;
return HANDLER_FINISHED;
default:
/* we have no idea what happened. let's tell the user so. */
r->http_status = 500;
log_perror(r->conf.errh, __FILE__, __LINE__,
"index file error for request: %s -> %s",
r->uri.path.ptr, r->physical.path.ptr);
return HANDLER_FINISHED;
}
}
/* found */
if (v->ptr[0] == '/') {
/* replace uri.path */
buffer_copy_buffer(&r->uri.path, v);
http_header_env_set(r, CONST_STR_LEN("PATH_TRANSLATED_DIRINDEX"),
BUF_PTR_LEN(&r->physical.path));
buffer_copy_path_len2(&r->physical.path,
BUF_PTR_LEN(&r->physical.doc_root),
BUF_PTR_LEN(v));
/*(XXX: not done historical, but rel_path probably should be updated)*/
/*buffer_copy_buffer(&r->physical.rel_path, v);*/
} else {
/* append to uri.path the relative path to index file (/ -> /index.php) */
buffer_append_string_buffer(&r->uri.path, v);
buffer_append_path_len(&r->physical.path, BUF_PTR_LEN(v));
/*(XXX: not done historical, but rel_path probably should be updated)*/
/*buffer_append_path_len(&r->physical.rel_path, BUF_PTR_LEN(v));*/
}
return HANDLER_GO_ON;
}
/* not found */
return HANDLER_GO_ON;
}
URIHANDLER_FUNC(mod_indexfile_subrequest) {
if (NULL != r->handler_module) return HANDLER_GO_ON;
if (!buffer_has_slash_suffix(&r->uri.path)) return HANDLER_GO_ON;
plugin_data *p = p_d;
mod_indexfile_patch_config(r, p);
if (NULL == p->conf.indexfiles) return HANDLER_GO_ON;
if (r->conf.log_request_handling) {
log_error(r->conf.errh, __FILE__, __LINE__,
"-- handling the request as Indexfile");
log_error(r->conf.errh, __FILE__, __LINE__,
"URI : %s", r->uri.path.ptr);
}
return mod_indexfile_tryfiles(r, p->conf.indexfiles);
}
int mod_indexfile_plugin_init(plugin *p);
int mod_indexfile_plugin_init(plugin *p) {
p->version = LIGHTTPD_VERSION_ID;
p->name = "indexfile";
p->init = mod_indexfile_init;
p->handle_subrequest_start = mod_indexfile_subrequest;
p->set_defaults = mod_indexfile_set_defaults;
return 0;
}
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