static apr_status_t store_headers(cache_handle_t *h, request_rec *r, cache_info *info)
{
disk_cache_conf *conf = ap_get_module_config(r->server->module_config,
&disk_cache_module);
apr_status_t rv;
apr_size_t amt;
disk_cache_object_t *dobj = (disk_cache_object_t*) h->cache_obj->vobj;
disk_cache_info_t disk_info;
struct iovec iov[2];
/* This is flaky... we need to manage the cache_info differently */
h->cache_obj->info = *info;
if (r->headers_out) {
const char *tmp;
tmp = apr_table_get(r->headers_out, "Vary");
if (tmp) {
apr_array_header_t* varray;
apr_uint32_t format = VARY_FORMAT_VERSION;
/* If we were initially opened as a vary format, rollback
* that internal state for the moment so we can recreate the
* vary format hints in the appropriate directory.
*/
if (dobj->prefix) {
dobj->hdrsfile = dobj->prefix;
dobj->prefix = NULL;
}
mkdir_structure(conf, dobj->hdrsfile, r->pool);
rv = apr_file_mktemp(&dobj->tfd, dobj->tempfile,
APR_CREATE | APR_WRITE | APR_BINARY | APR_EXCL,
r->pool);
if (rv != APR_SUCCESS) {
return rv;
}
amt = sizeof(format);
apr_file_write(dobj->tfd, &format, &amt);
amt = sizeof(info->expire);
apr_file_write(dobj->tfd, &info->expire, &amt);
varray = apr_array_make(r->pool, 6, sizeof(char*));
tokens_to_array(r->pool, tmp, varray);
store_array(dobj->tfd, varray);
apr_file_close(dobj->tfd);
dobj->tfd = NULL;
rv = safe_file_rename(conf, dobj->tempfile, dobj->hdrsfile,
r->pool);
if (rv != APR_SUCCESS) {
ap_log_error(APLOG_MARK, APLOG_WARNING, rv, r->server,
"disk_cache: rename tempfile to varyfile failed: %s -> %s",
dobj->tempfile, dobj->hdrsfile);
apr_file_remove(dobj->tempfile, r->pool);
return rv;
}
dobj->tempfile = apr_pstrcat(r->pool, conf->cache_root, AP_TEMPFILE, NULL);
tmp = regen_key(r->pool, r->headers_in, varray, dobj->name);
dobj->prefix = dobj->hdrsfile;
dobj->hashfile = NULL;
dobj->datafile = data_file(r->pool, conf, dobj, tmp);
dobj->hdrsfile = header_file(r->pool, conf, dobj, tmp);
}
}
rv = apr_file_mktemp(&dobj->hfd, dobj->tempfile,
APR_CREATE | APR_WRITE | APR_BINARY |
APR_BUFFERED | APR_EXCL, r->pool);
if (rv != APR_SUCCESS) {
return rv;
}
disk_info.format = DISK_FORMAT_VERSION;
disk_info.date = info->date;
disk_info.expire = info->expire;
disk_info.entity_version = dobj->disk_info.entity_version++;
disk_info.request_time = info->request_time;
disk_info.response_time = info->response_time;
disk_info.status = info->status;
disk_info.name_len = strlen(dobj->name);
iov[0].iov_base = (void*)&disk_info;
iov[0].iov_len = sizeof(disk_cache_info_t);
iov[1].iov_base = (void*)dobj->name;
iov[1].iov_len = disk_info.name_len;
rv = apr_file_writev(dobj->hfd, (const struct iovec *) &iov, 2, &amt);
if (rv != APR_SUCCESS) {
return rv;
}
if (r->headers_out) {
apr_table_t *headers_out;
headers_out = ap_cache_cacheable_hdrs_out(r->pool, r->headers_out,
r->server);
if (!apr_table_get(headers_out, "Content-Type")
&& r->content_type) {
apr_table_setn(headers_out, "Content-Type",
ap_make_content_type(r, r->content_type));
}
headers_out = apr_table_overlay(r->pool, headers_out,
r->err_headers_out);
rv = store_table(dobj->hfd, headers_out);
if (rv != APR_SUCCESS) {
return rv;
}
}
/* Parse the vary header and dump those fields from the headers_in. */
/* FIXME: Make call to the same thing cache_select calls to crack Vary. */
if (r->headers_in) {
apr_table_t *headers_in;
headers_in = ap_cache_cacheable_hdrs_out(r->pool, r->headers_in,
r->server);
rv = store_table(dobj->hfd, headers_in);
if (rv != APR_SUCCESS) {
return rv;
}
}
apr_file_close(dobj->hfd); /* flush and close */
/* Remove old file with the same name. If remove fails, then
* perhaps we need to create the directory tree where we are
* about to write the new headers file.
*/
rv = apr_file_remove(dobj->hdrsfile, r->pool);
if (rv != APR_SUCCESS) {
mkdir_structure(conf, dobj->hdrsfile, r->pool);
}
rv = safe_file_rename(conf, dobj->tempfile, dobj->hdrsfile, r->pool);
if (rv != APR_SUCCESS) {
ap_log_error(APLOG_MARK, APLOG_WARNING, rv, r->server,
"disk_cache: rename tempfile to hdrsfile failed: %s -> %s",
dobj->tempfile, dobj->hdrsfile);
apr_file_remove(dobj->tempfile, r->pool);
return rv;
}
dobj->tempfile = apr_pstrcat(r->pool, conf->cache_root, AP_TEMPFILE, NULL);
ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server,
"disk_cache: Stored headers for URL %s", dobj->name);
return APR_SUCCESS;
}
static apr_status_t store_headers(cache_handle_t *h, request_rec *r, cache_info *info)
{
cache_object_t *obj = h->cache_obj;
mem_cache_object_t *mobj = (mem_cache_object_t*) obj->vobj;
apr_table_t *headers_out;
/*
* The cache needs to keep track of the following information:
* - Date, LastMod, Version, ReqTime, RespTime, ContentLength
* - The original request headers (for Vary)
* - The original response headers (for returning with a cached response)
* - The body of the message
*/
if (mobj->lock) {
apr_thread_mutex_lock(mobj->lock);
}
mobj->req_hdrs = deep_table_copy(mobj->pool, r->headers_in);
if (mobj->lock) {
apr_thread_mutex_unlock(mobj->lock);
}
/* Precompute how much storage we need to hold the headers */
headers_out = apr_table_overlay(r->pool, r->headers_out,
r->err_headers_out);
headers_out = ap_cache_cacheable_hdrs_out(r->pool, headers_out,
r->server);
/* If not set in headers_out, set Content-Type */
if (!apr_table_get(headers_out, "Content-Type")
&& r->content_type) {
apr_table_setn(headers_out, "Content-Type",
ap_make_content_type(r, r->content_type));
}
if (!apr_table_get(headers_out, "Content-Encoding")
&& r->content_encoding) {
apr_table_setn(headers_out, "Content-Encoding",
r->content_encoding);
}
if (mobj->lock) {
apr_thread_mutex_lock(mobj->lock);
}
mobj->header_out = deep_table_copy(mobj->pool, headers_out);
if (mobj->lock) {
apr_thread_mutex_unlock(mobj->lock);
}
/* Init the info struct */
obj->info.status = info->status;
if (info->date) {
obj->info.date = info->date;
}
if (info->response_time) {
obj->info.response_time = info->response_time;
}
if (info->request_time) {
obj->info.request_time = info->request_time;
}
if (info->expire) {
obj->info.expire = info->expire;
}
return APR_SUCCESS;
}
