source: uKadecot/trunk/uip/apps/webserver/httpd-fs.c@ 107

/*
 * Copyright (c) 2001, Swedish Institute of Computer Science.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * This file is part of the lwIP TCP/IP stack.
 *
 * Author: Adam Dunkels <adam@sics.se>
 *
 * $Id: httpd-fs.c 107 2015-06-10 11:40:31Z coas-nagasima $
 */

#include "httpd.h"
#include "httpd-fs.h"
#include "pff.h"
#include "diskio.h"

//#define FILE_DUMP
#ifdef FILE_DUMP
#include <string.h>
char path[256] = "";
FATFS fs;
#endif

#ifndef NULL
#define NULL 0
#endif /* NULL */

/*-----------------------------------------------------------------------------------*/
#ifdef FILE_DUMP
FRESULT scan_files (FATFS *fs, char* path, int size)
{
        FRESULT res;
        FILINFO fno;
        DIR dir;
        int i;
        char *fn;   /* This function assumes non-Unicode configuration */
#if _USE_LFN
        char LFName[256];
        fno.lfname = LFName;
        fno.lfsize = sizeof(LFName);
#endif

        dir.fs = fs;
        res = pf_opendir(&dir, path);
        if (res == FR_OK) {
                i = strlen(path);
                for (;;) {
                        res = pf_readdir(&dir, &fno);
                        if (res != FR_OK || fno.fname[0] == 0) break;
#if _USE_LFN
                        fn = *fno.lfname ? fno.lfname : fno.fname;
#else
                        fn = fno.fname;
#endif
                        if (fno.fattrib & AM_DIR) {
                                sprintf_s(&path[i], size - i, "/%s", fn);
                                res = scan_files(fs, path, size);
                                if (res != FR_OK) break;
                                path[i] = 0;
                        } else {
                                printf("%s/%s\n", path, fn);
                        }
                }
        }

        return res;
}
#endif
/*-----------------------------------------------------------------------------------*/
void
httpd_fs_init(void)
{
#ifdef FILE_DUMP
        FRESULT res;
#endif
        disk_initialize();
#ifdef FILE_DUMP
        if((res = pf_mount(&fs)) != FR_OK){
                printf("pf_mount() => %d\n", res);
                return;
        }
        if((res = scan_files(&fs, path, sizeof(path))) != FR_OK){
                printf("scan_files() => %d\n", res);
                return;
        }
#endif
}
/*-----------------------------------------------------------------------------------*/
int
httpd_fs_open(const char *name, struct httpd_fs_file *file)
{
        FRESULT res;
        FATFS *fs = (FATFS *)&file->fs;

        if (fs->fs_type == 0){
                if((res = pf_mount(fs)) != FR_OK){
                        printf("pf_mount() => %d\n", res);
                        return 0;
                }
        }

        if((res = pf_open(fs, name)) != FR_OK){
                printf("pf_open(%s) => %d\n", name, res);
                return 0;
        }

        file->pos = 0;
        file->len = fs->fsize;
        file->name = name;

        //printf("httpd_fs_open(%s) %d\n", name, file->len);

        return 1;
}
/*-----------------------------------------------------------------------------------*/
int
httpd_fs_read(struct httpd_fs_file *file, void *dst, int len)
{
        FRESULT ret;
        UINT rlen;
        FATFS *fs = (FATFS *)&file->fs;

        if((ret = pf_lseek(fs, file->pos)) != FR_OK){
                printf("pf_lseek(%d) => %d\n", file->pos, ret);
                return 0;
        }

        if(file->pos != fs->fptr){
                printf("pf_lseek(%d) != %d\n", file->pos, fs->fptr);
        }

        if((ret = pf_read(fs, dst, len, &rlen)) != FR_OK){
                printf("pf_read(%x, %d) => %d\n", dst, len, ret);
                return 0;
        }

        //printf("httpd_fs_read(%s, %d, %d) => %d\n", file->name, file->pos, len, rlen);

        return rlen;
}
/*-----------------------------------------------------------------------------------*/