Rev Author Line No. Line
3328 povik 1 /**
2 * \addtogroup httpd
3 * @{
4 */
5  
6 /**
7 * \file
8 * HTTP server read-only file system code.
9 * \author Adam Dunkels <adam@dunkels.com>
10 *
11 * A simple read-only filesystem.
12 */
13  
14 /*
15 * Copyright (c) 2001, Swedish Institute of Computer Science.
16 * All rights reserved.
17 *
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions
20 * are met:
21 * 1. Redistributions of source code must retain the above copyright
22 * notice, this list of conditions and the following disclaimer.
23 * 2. Redistributions in binary form must reproduce the above copyright
24 * notice, this list of conditions and the following disclaimer in the
25 * documentation and/or other materials provided with the distribution.
26 * 3. Neither the name of the Institute nor the names of its contributors
27 * may be used to endorse or promote products derived from this software
28 * without specific prior written permission.
29 *
30 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
31 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
34 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
36 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
38 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
39 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40 * SUCH DAMAGE.
41 *
42 * This file is part of the lwIP TCP/IP stack.
43 *
44 * Author: Adam Dunkels <adam@sics.se>
45 *
46 * $Id: fs.c,v 1.7.2.3 2003/10/07 13:22:27 adam Exp $
47 */
48  
49 #include "uip.h"
50 #include "httpd.h"
51 #include "fs.h"
52 #include "fsdata.h"
53  
54 #define NULL (void *)0
55 #include "fsdata.c"
56  
57 #ifdef FS_STATISTICS
58 #if FS_STATISTICS == 1
59 static u16_t count[FS_NUMFILES];
60 #endif /* FS_STATISTICS */
61 #endif /* FS_STATISTICS */
62  
63 /*-----------------------------------------------------------------------------------*/
64 static u8_t
65 fs_strcmp(const char *str1, const char *str2)
66 {
67 u8_t i;
68 i = 0;
69 loop:
70  
71 if(str2[i] == 0 ||
72 str1[i] == '\r' ||
73 str1[i] == '\n') {
74 return 0;
75 }
76  
77 if(str1[i] != str2[i]) {
78 return 1;
79 }
80  
81  
82 ++i;
83 goto loop;
84 }
85 /*-----------------------------------------------------------------------------------*/
86 int
87 fs_open(const char *name, struct fs_file *file)
88 {
89 #ifdef FS_STATISTICS
90 #if FS_STATISTICS == 1
91 u16_t i = 0;
92 #endif /* FS_STATISTICS */
93 #endif /* FS_STATISTICS */
94 struct fsdata_file_noconst *f;
95  
96 for(f = (struct fsdata_file_noconst *)FS_ROOT;
97 f != NULL;
98 f = (struct fsdata_file_noconst *)f->next) {
99  
100 if(fs_strcmp(name, f->name) == 0) {
101 file->data = f->data;
102 file->len = f->len;
103 #ifdef FS_STATISTICS
104 #if FS_STATISTICS == 1
105 ++count[i];
106 #endif /* FS_STATISTICS */
107 #endif /* FS_STATISTICS */
108 return 1;
109 }
110 #ifdef FS_STATISTICS
111 #if FS_STATISTICS == 1
112 ++i;
113 #endif /* FS_STATISTICS */
114 #endif /* FS_STATISTICS */
115  
116 }
117 return 0;
118 }
119 /*-----------------------------------------------------------------------------------*/
120 void
121 fs_init(void)
122 {
123 #ifdef FS_STATISTICS
124 #if FS_STATISTICS == 1
125 u16_t i;
126 for(i = 0; i < FS_NUMFILES; i++) {
127 count[i] = 0;
128 }
129 #endif /* FS_STATISTICS */
130 #endif /* FS_STATISTICS */
131 }
132 /*-----------------------------------------------------------------------------------*/
133 #ifdef FS_STATISTICS
134 #if FS_STATISTICS == 1
135 u16_t fs_count
136 (char *name)
137 {
138 struct fsdata_file_noconst *f;
139 u16_t i;
140  
141 i = 0;
142 for(f = (struct fsdata_file_noconst *)FS_ROOT;
143 f != NULL;
144 f = (struct fsdata_file_noconst *)f->next) {
145  
146 if(fs_strcmp(name, f->name) == 0) {
147 return count[i];
148 }
149 ++i;
150 }
151 return 0;
152 }
153 #endif /* FS_STATISTICS */
154 #endif /* FS_STATISTICS */
155 /*-----------------------------------------------------------------------------------*/