httpd-fs.c

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 1.4 2009/07/24 15:41:52 dak664 Exp $
00034  */
00035 
00036 #include "contiki-net.h"
00037 #include "httpd.h"
00038 #include "httpd-fs.h"
00039 #include "httpd-fsdata.h"
00040 #include "httpd-fsdata.c" 
00041 
00042 #if HTTPD_FS_STATISTICS==2
00043 u16_t httpd_filecount[HTTPD_FS_NUMFILES];
00044 #endif /* HTTPD_FS_STATISTICS */
00045 
00046 /*-----------------------------------------------------------------------------------*/
00047 void *
00048 httpd_fs_get_root()
00049 {
00050   return (void *)HTTPD_FS_ROOT;
00051 }
00052 /*-----------------------------------------------------------------------------------*/
00053 u16_t
00054 httpd_fs_get_size()
00055 {
00056   return HTTPD_FS_SIZE;
00057 }
00058 /*-----------------------------------------------------------------------------------*/
00059 
00060 u16_t
00061 httpd_fs_open(const char *name, struct httpd_fs_file *file)
00062 {
00063 #if HTTPD_FS_STATISTICS
00064   u16_t i = 0;
00065 #endif /* HTTPD_FS_STATISTICS */
00066   struct httpd_fsdata_file_noconst *f,fram;
00067 
00068   for(f = (struct httpd_fsdata_file_noconst *)HTTPD_FS_ROOT;
00069       f != NULL;
00070       f = (struct httpd_fsdata_file_noconst *)fram.next) {
00071 
00072     /*Get the linked list entry into ram from wherever it is */
00073     httpd_memcpy(&fram,f,sizeof(fram));
00074 
00075     /*Compare name passed in RAM with name in whatever flash the file is in */
00076     if(httpd_fs_strcmp((char *)name, fram.name) == 0) {
00077       if (file) {
00078         file->data = fram.data;
00079         file->len  = fram.len;
00080 #if HTTPD_FS_STATISTICS==1          //increment count in linked list field if it is in RAM
00081         f->count++;
00082       }
00083       return f->count;
00084     }
00085     ++i
00086 #elif HTTPD_FS_STATISTICS==2       //increment count in RAM array when linked list is in flash
00087         ++httpd_filecount[i];
00088       }
00089       return httpd_filecount[i];
00090     }
00091     ++i;
00092 #else                              //no file statistics
00093       }
00094       return 1;
00095     }
00096 #endif /*HTTPD_FS_STATISTICS*/
00097   }
00098   return 0;
00099 
00100 }
00101 /*-----------------------------------------------------------------------------------*/
00102 void
00103 httpd_fs_init(void)
00104 {
00105 #if HTTPD_FS_STATISTICS && 0 //count will already be zero at boot
00106   u16_t i;
00107   for(i = 0; i < HTTPD_FS_NUMFILES; i++) {
00108     count[i] = 0;
00109   }
00110 #endif /* HTTPD_FS_STATISTICS */
00111 }
00112 /*-----------------------------------------------------------------------------------*/
00113 #if HTTPD_FS_STATISTICS && 0 //Not needed, httpd_fs_open returns count
00114 u16_t
00115 httpd_fs_count(char *name)
00116 {
00117   struct httpd_fsdata_file_noconst *f,fram;
00118   u16_t i;
00119 
00120   i = 0;
00121   for(f = (struct httpd_fsdata_file_noconst *)HTTPD_FS_ROOT;
00122       f != NULL;
00123       f = (struct httpd_fsdata_file_noconst *)fram.next) {
00124     httpd_memcpy(&fram,f,sizeof(fram));
00125     if(httpd_strcmp(name, fram.name) == 0) {
00126 #if HTTPD_FS_STATISTICS==1
00127       return f->count;
00128 #elif HTTPD_FS_STATISTICS==2
00129       return count[i];
00130 #endif
00131     }
00132     ++i;
00133   }
00134   return 0;
00135 }
00136 #endif /* HTTPD_FS_STATISTICS */
00137 /*-----------------------------------------------------------------------------------*/

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