#include "first.h"
#include "base.h"
#include "log.h"
#include "buffer.h"
#include "http_header.h"
#include "plugin.h"
#include "stat_cache.h"
#include <stdlib.h>
#include <string.h>
#include <errno.h>
/* plugin config for all request/connections */
typedef struct {
array *indexfiles;
} plugin_config;
typedef struct {
PLUGIN_DATA;
buffer *tmp_buf;
plugin_config **config_storage;
plugin_config conf;
} plugin_data;
/* init the plugin data */
INIT_FUNC(mod_indexfile_init) {
plugin_data *p;
p = calloc(1, sizeof(*p));
p->tmp_buf = buffer_init();
return p;
}
/* detroy the plugin data */
FREE_FUNC(mod_indexfile_free) {
plugin_data *p = p_d;
UNUSED(srv);
if (!p) return HANDLER_GO_ON;
if (p->config_storage) {
size_t i;
for (i = 0; i < srv->config_context->used; i++) {
plugin_config *s = p->config_storage[i];
if (NULL == s) continue;
array_free(s->indexfiles);
free(s);
}
free(p->config_storage);
}
buffer_free(p->tmp_buf);
free(p);
return HANDLER_GO_ON;
}
/* handle plugin config and check values */
SETDEFAULTS_FUNC(mod_indexfile_set_defaults) {
plugin_data *p = p_d;
size_t i = 0;
config_values_t cv[] = {
{ "index-file.names", NULL, T_CONFIG_ARRAY, T_CONFIG_SCOPE_CONNECTION }, /* 0 */
{ "server.indexfiles", NULL, T_CONFIG_ARRAY, T_CONFIG_SCOPE_CONNECTION }, /* 1 */
{ NULL, NULL, T_CONFIG_UNSET, T_CONFIG_SCOPE_UNSET }
};
if (!p) return HANDLER_ERROR;
p->config_storage = calloc(1, srv->config_context->used * sizeof(plugin_config *));
for (i = 0; i < srv->config_context->used; i++) {
data_config const* config = (data_config const*)srv->config_context->data[i];
plugin_config *s;
s = calloc(1, sizeof(plugin_config));
s->indexfiles = array_init();
cv[0].destination = s->indexfiles;
cv[1].destination = s->indexfiles; /* old name for [0] */
p->config_storage[i] = s;
if (0 != config_insert_values_global(srv, config->value, cv, i == 0 ? T_CONFIG_SCOPE_SERVER : T_CONFIG_SCOPE_CONNECTION)) {
return HANDLER_ERROR;
}
if (!array_is_vlist(s->indexfiles)) {
log_error_write(srv, __FILE__, __LINE__, "s",
"unexpected value for index-file.names; expected list of \"file\"");
return HANDLER_ERROR;
}
}
return HANDLER_GO_ON;
}
#define PATCH(x) \
p->conf.x = s->x;
static int mod_indexfile_patch_connection(server *srv, connection *con, plugin_data *p) {
size_t i, j;
plugin_config *s = p->config_storage[0];
PATCH(indexfiles);
/* skip the first, the global context */
for (i = 1; i < srv->config_context->used; i++) {
data_config *dc = (data_config *)srv->config_context->data[i];
s = p->config_storage[i];
/* condition didn't match */
if (!config_check_cond(srv, con, dc)) continue;
/* merge config */
for (j = 0; j < dc->value->used; j++) {
data_unset *du = dc->value->data[j];
if (buffer_is_equal_string(du->key, CONST_STR_LEN("server.indexfiles"))) {
PATCH(indexfiles);
} else if (buffer_is_equal_string(du->key, CONST_STR_LEN("index-file.names"))) {
PATCH(indexfiles);
}
}
}
return 0;
}
#undef PATCH
URIHANDLER_FUNC(mod_indexfile_subrequest) {
plugin_data *p = p_d;
size_t k;
stat_cache_entry *sce = NULL;
if (con->mode != DIRECT) return HANDLER_GO_ON;
if (buffer_is_empty(con->uri.path)) return HANDLER_GO_ON;
if (con->uri.path->ptr[buffer_string_length(con->uri.path) - 1] != '/') return HANDLER_GO_ON;
mod_indexfile_patch_connection(srv, con, p);
if (con->conf.log_request_handling) {
log_error_write(srv, __FILE__, __LINE__, "s", "-- handling the request as Indexfile");
log_error_write(srv, __FILE__, __LINE__, "sb", "URI :", con->uri.path);
}
/* indexfile */
for (k = 0; k < p->conf.indexfiles->used; k++) {
data_string *ds = (data_string *)p->conf.indexfiles->data[k];
if (ds->value && ds->value->ptr[0] == '/') {
/* if the index-file starts with a prefix as use this file as
* index-generator */
buffer_copy_buffer(p->tmp_buf, con->physical.doc_root);
} else {
buffer_copy_buffer(p->tmp_buf, con->physical.path);
}
buffer_append_string_buffer(p->tmp_buf, ds->value);
if (HANDLER_ERROR == stat_cache_get_entry(srv, con, p->tmp_buf, &sce)) {
if (errno == EACCES) {
con->http_status = 403;
buffer_reset(con->physical.path);
return HANDLER_FINISHED;
}
if (errno != ENOENT &&
errno != ENOTDIR) {
/* we have no idea what happend. let's tell the user so. */
con->http_status = 500;
log_error_write(srv, __FILE__, __LINE__, "ssbsb",
"file not found ... or so: ", strerror(errno),
con->uri.path,
"->", con->physical.path);
buffer_reset(con->physical.path);
return HANDLER_FINISHED;
}
continue;
}
if (ds->value && ds->value->ptr[0] == '/') {
/* replace uri.path */
buffer_copy_buffer(con->uri.path, ds->value);
http_header_env_set(con, CONST_STR_LEN("PATH_TRANSLATED_DIRINDEX"), CONST_BUF_LEN(con->physical.path));
} else {
/* append to uri.path the relative path to index file (/ -> /index.php) */
buffer_append_string_buffer(con->uri.path, ds->value);
}
buffer_copy_buffer(con->physical.path, p->tmp_buf);
return HANDLER_GO_ON;
}
/* not found */
return HANDLER_GO_ON;
}
/* this function is called at dlopen() time and inits the callbacks */
int mod_indexfile_plugin_init(plugin *p);
int mod_indexfile_plugin_init(plugin *p) {
p->version = LIGHTTPD_VERSION_ID;
p->name = buffer_init_string("indexfile");
p->init = mod_indexfile_init;
p->handle_subrequest_start = mod_indexfile_subrequest;
p->set_defaults = mod_indexfile_set_defaults;
p->cleanup = mod_indexfile_free;
p->data = NULL;
return 0;
}
↑ V522 There might be dereferencing of a potential null pointer 'p'. Check lines: 38, 36.
↑ V522 There might be dereferencing of a potential null pointer 's'. Check lines: 93, 92.
↑ V522 There might be dereferencing of a potential null pointer 'p->config_storage'. Check lines: 98, 86.