asset.c
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/**
* \file
*
* \author Georg Hopp
*
* \copyright
* Copyright © 2012 Georg Hopp
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdarg.h>
// for mmap
#include <sys/mman.h>
// for open and fstat
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
// for access
#include <unistd.h>
// for localtime
#include <time.h>
#include "class.h"
#include "asset.h"
#include "hash.h"
#include "utils/mime_type.h"
#include "utils/hash.h"
#include "utils/http.h"
static
int
assetCtor(void * _this, va_list * params)
{
Asset this = _this;
struct tm * tmp;
struct stat st;
char * fname = va_arg(*params, char*);
char * ext;
this->nfname = va_arg(*params, size_t);
strncpy(this->fname, fname, 2048);
this->fname[2048] = '\0';
this->hash = sdbm(
(unsigned char *)this->fname,
this->nfname);
if (-1 == access(this->fname, O_RDONLY)) {
return -1;
} else {
this->handle = open(this->fname, O_RDONLY);
fstat(this->handle, &st);
}
tmp = localtime(&(st.st_mtime));
this->netag = strftime(this->etag, sizeof(this->etag), "%s", tmp);
this->nmtime = rfc1123Gmt(
this->mtime,
sizeof(this->mtime),
&(st.st_mtime));
this->size = st.st_size;
ext = strrchr(this->fname, '.');
if (NULL != ext) {
ext++;
this->mime_type = getMimeType(ext, strlen(ext));
} else {
this->mime_type = "application/octet-stream";
}
if (NULL != this->mime_type) {
this->nmime_type = strlen(this->mime_type);
} else {
this->nmime_type = 0;
}
this->data = mmap(
NULL, this->size, PROT_READ, MAP_PRIVATE, this->handle, 0);
if (MAP_FAILED == this->data) {
close(this->handle);
return -1;
}
this->ref_count = 1;
return 0;
}
static void assetDtor(void * _this) {
Asset this = _this;
if (MAP_FAILED != this->data && NULL != this->data) {
munmap(this->data, this->size);
}
if (0 < this->handle) {
close(this->handle);
}
}
static
unsigned long
assetGetHash(void * _this)
{
Asset this = _this;
return this->hash;
}
static
void
assetHandleDouble(void * _this, void * _doub)
{
}
INIT_IFACE(Class, assetCtor, assetDtor, NULL);
INIT_IFACE(Hashable, assetGetHash, assetHandleDouble);
CREATE_CLASS(Asset, NULL, IFACE(Class), IFACE(Hashable));
// vim: set ts=4 sw=4: