httpd-fs.cpp

00001 /*
00002  * Copyright (c) 2001, Swedish Institute of Computer Science.
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 3. Neither the name of the Institute nor the names of its contributors
00014  *    may be used to endorse or promote products derived from this software
00015  *    without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
00018  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
00021  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00022  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00023  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00024  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00025  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00026  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00027  * SUCH DAMAGE.
00028  *
00029  * This file is part of the lwIP TCP/IP stack.
00030  *
00031  * Author: Adam Dunkels <adam@sics.se>
00032  *
00033  * $Id: httpd-fs.c,v 1.1 2006/06/07 09:13:08 adam Exp $
00034  */
00035 
00036 extern "C" {
00037     #include "httpd.h"
00038 }
00039 //#include "httpd-fs.h"
00040 #include "httpd-fs-struct.h"
00041 
00042 #ifndef NULL
00043 #define NULL 0
00044 #endif /* NULL */
00045 
00046 #include "httpd-fs-data.h"
00047 
00048 #if HTTPD_FS_STATISTICS
00049 static u16_t count[HTTPD_FS_NUMFILES];
00050 #endif /* HTTPD_FS_STATISTICS */
00051 
00052 /*-----------------------------------------------------------------------------------*/
00053 static u8_t
00054 httpd_fs_strcmp(const char *str1, const char *str2)
00055 {
00056   u8_t i;
00057   i = 0;
00058  loop:
00059 
00060   if(str2[i] == 0 ||
00061      str1[i] == '\r' ||
00062      str1[i] == '\n') {
00063     return 0;
00064   }
00065 
00066   if(str1[i] != str2[i]) {
00067     return 1;
00068   }
00069 
00070 
00071   ++i;
00072   goto loop;
00073 }
00074 /*-----------------------------------------------------------------------------------*/
00075 int
00076 httpd_fs_open(const char *name, struct httpd_fs_file *file)
00077 {
00078 #if HTTPD_FS_STATISTICS
00079   u16_t i = 0;
00080 #endif /* HTTPD_FS_STATISTICS */
00081   struct httpd_fsdata_file_noconst *f;
00082 
00083   for(f = (struct httpd_fsdata_file_noconst *)HTTPD_FS_ROOT;
00084       f != NULL;
00085       f = (struct httpd_fsdata_file_noconst *)f->next) {
00086 
00087     if(httpd_fs_strcmp(name, f->name) == 0) {
00088       file->data = f->data;
00089       file->len = f->len;
00090 #if HTTPD_FS_STATISTICS
00091       ++count[i];
00092 #endif /* HTTPD_FS_STATISTICS */
00093       return 1;
00094     }
00095 #if HTTPD_FS_STATISTICS
00096     ++i;
00097 #endif /* HTTPD_FS_STATISTICS */
00098 
00099   }
00100   return 0;
00101 }
00102 /*-----------------------------------------------------------------------------------*/
00103 void
00104 httpd_fs_init(void)
00105 {
00106 #if HTTPD_FS_STATISTICS
00107   u16_t i;
00108   for(i = 0; i < HTTPD_FS_NUMFILES; i++) {
00109     count[i] = 0;
00110   }
00111 #endif /* HTTPD_FS_STATISTICS */
00112 }
00113 /*-----------------------------------------------------------------------------------*/
00114 #if HTTPD_FS_STATISTICS
00115 u16_t httpd_fs_count
00116 (char *name)
00117 {
00118   struct httpd_fsdata_file_noconst *f;
00119   u16_t i;
00120 
00121   i = 0;
00122   for(f = (struct httpd_fsdata_file_noconst *)HTTPD_FS_ROOT;
00123       f != NULL;
00124       f = (struct httpd_fsdata_file_noconst *)f->next) {
00125 
00126     if(httpd_fs_strcmp(name, f->name) == 0) {
00127       return count[i];
00128     }
00129     ++i;
00130   }
00131   return 0;
00132 }
00133 #endif /* HTTPD_FS_STATISTICS */
00134 /*-----------------------------------------------------------------------------------*/