BadVPN – Blame information for rev 1
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1 | office | 1 | /* |
2 | * Copyright (c) 2001-2003 Swedish Institute of Computer Science. |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without modification, |
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6 | * are permitted provided that the following conditions are met: |
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7 | * |
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8 | * 1. Redistributions of source code must retain the above copyright notice, |
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9 | * this list of conditions and the following disclaimer. |
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10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
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11 | * this list of conditions and the following disclaimer in the documentation |
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12 | * and/or other materials provided with the distribution. |
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13 | * 3. The name of the author may not be used to endorse or promote products |
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14 | * derived from this software without specific prior written permission. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
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19 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
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21 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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22 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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24 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
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25 | * OF SUCH DAMAGE. |
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26 | * |
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27 | * This file is part of the lwIP TCP/IP stack. |
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28 | * |
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29 | * Author: Adam Dunkels <adam@sics.se> |
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30 | * |
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31 | */ |
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32 | |||
33 | #include "lwip/apps/httpd_opts.h" |
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34 | #include "lwip/def.h" |
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35 | #include "lwip/apps/fs.h" |
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36 | #include <string.h> |
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37 | |||
38 | |||
39 | #include HTTPD_FSDATA_FILE |
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40 | |||
41 | /*-----------------------------------------------------------------------------------*/ |
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42 | |||
43 | #if LWIP_HTTPD_CUSTOM_FILES |
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44 | int fs_open_custom(struct fs_file *file, const char *name); |
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45 | void fs_close_custom(struct fs_file *file); |
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46 | #if LWIP_HTTPD_FS_ASYNC_READ |
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47 | u8_t fs_canread_custom(struct fs_file *file); |
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48 | u8_t fs_wait_read_custom(struct fs_file *file, fs_wait_cb callback_fn, void *callback_arg); |
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49 | int fs_read_async_custom(struct fs_file *file, char *buffer, int count, fs_wait_cb callback_fn, void *callback_arg); |
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50 | #else /* LWIP_HTTPD_FS_ASYNC_READ */ |
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51 | int fs_read_custom(struct fs_file *file, char *buffer, int count); |
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52 | #endif /* LWIP_HTTPD_FS_ASYNC_READ */ |
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53 | #endif /* LWIP_HTTPD_CUSTOM_FILES */ |
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54 | |||
55 | /*-----------------------------------------------------------------------------------*/ |
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56 | err_t |
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57 | fs_open(struct fs_file *file, const char *name) |
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58 | { |
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59 | const struct fsdata_file *f; |
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60 | |||
61 | if ((file == NULL) || (name == NULL)) { |
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62 | return ERR_ARG; |
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63 | } |
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64 | |||
65 | #if LWIP_HTTPD_CUSTOM_FILES |
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66 | if (fs_open_custom(file, name)) { |
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67 | file->is_custom_file = 1; |
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68 | return ERR_OK; |
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69 | } |
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70 | file->is_custom_file = 0; |
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71 | #endif /* LWIP_HTTPD_CUSTOM_FILES */ |
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72 | |||
73 | for (f = FS_ROOT; f != NULL; f = f->next) { |
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74 | if (!strcmp(name, (const char *)f->name)) { |
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75 | file->data = (const char *)f->data; |
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76 | file->len = f->len; |
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77 | file->index = f->len; |
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78 | file->pextension = NULL; |
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79 | file->flags = f->flags; |
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80 | #if HTTPD_PRECALCULATED_CHECKSUM |
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81 | file->chksum_count = f->chksum_count; |
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82 | file->chksum = f->chksum; |
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83 | #endif /* HTTPD_PRECALCULATED_CHECKSUM */ |
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84 | #if LWIP_HTTPD_FILE_STATE |
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85 | file->state = fs_state_init(file, name); |
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86 | #endif /* #if LWIP_HTTPD_FILE_STATE */ |
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87 | return ERR_OK; |
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88 | } |
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89 | } |
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90 | /* file not found */ |
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91 | return ERR_VAL; |
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92 | } |
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93 | |||
94 | /*-----------------------------------------------------------------------------------*/ |
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95 | void |
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96 | fs_close(struct fs_file *file) |
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97 | { |
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98 | #if LWIP_HTTPD_CUSTOM_FILES |
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99 | if (file->is_custom_file) { |
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100 | fs_close_custom(file); |
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101 | } |
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102 | #endif /* LWIP_HTTPD_CUSTOM_FILES */ |
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103 | #if LWIP_HTTPD_FILE_STATE |
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104 | fs_state_free(file, file->state); |
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105 | #endif /* #if LWIP_HTTPD_FILE_STATE */ |
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106 | LWIP_UNUSED_ARG(file); |
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107 | } |
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108 | /*-----------------------------------------------------------------------------------*/ |
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109 | #if LWIP_HTTPD_DYNAMIC_FILE_READ |
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110 | #if LWIP_HTTPD_FS_ASYNC_READ |
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111 | int |
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112 | fs_read_async(struct fs_file *file, char *buffer, int count, fs_wait_cb callback_fn, void *callback_arg) |
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113 | #else /* LWIP_HTTPD_FS_ASYNC_READ */ |
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114 | int |
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115 | fs_read(struct fs_file *file, char *buffer, int count) |
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116 | #endif /* LWIP_HTTPD_FS_ASYNC_READ */ |
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117 | { |
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118 | int read; |
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119 | if (file->index == file->len) { |
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120 | return FS_READ_EOF; |
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121 | } |
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122 | #if LWIP_HTTPD_FS_ASYNC_READ |
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123 | LWIP_UNUSED_ARG(callback_fn); |
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124 | LWIP_UNUSED_ARG(callback_arg); |
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125 | #endif /* LWIP_HTTPD_FS_ASYNC_READ */ |
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126 | #if LWIP_HTTPD_CUSTOM_FILES |
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127 | if (file->is_custom_file) { |
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128 | #if LWIP_HTTPD_FS_ASYNC_READ |
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129 | return fs_read_async_custom(file, buffer, count, callback_fn, callback_arg); |
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130 | #else /* LWIP_HTTPD_FS_ASYNC_READ */ |
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131 | return fs_read_custom(file, buffer, count); |
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132 | #endif /* LWIP_HTTPD_FS_ASYNC_READ */ |
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133 | } |
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134 | #endif /* LWIP_HTTPD_CUSTOM_FILES */ |
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135 | |||
136 | read = file->len - file->index; |
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137 | if (read > count) { |
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138 | read = count; |
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139 | } |
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140 | |||
141 | MEMCPY(buffer, (file->data + file->index), read); |
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142 | file->index += read; |
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143 | |||
144 | return (read); |
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145 | } |
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146 | #endif /* LWIP_HTTPD_DYNAMIC_FILE_READ */ |
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147 | /*-----------------------------------------------------------------------------------*/ |
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148 | #if LWIP_HTTPD_FS_ASYNC_READ |
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149 | int |
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150 | fs_is_file_ready(struct fs_file *file, fs_wait_cb callback_fn, void *callback_arg) |
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151 | { |
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152 | if (file != NULL) { |
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153 | #if LWIP_HTTPD_FS_ASYNC_READ |
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154 | #if LWIP_HTTPD_CUSTOM_FILES |
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155 | if (!fs_canread_custom(file)) { |
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156 | if (fs_wait_read_custom(file, callback_fn, callback_arg)) { |
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157 | return 0; |
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158 | } |
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159 | } |
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160 | #else /* LWIP_HTTPD_CUSTOM_FILES */ |
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161 | LWIP_UNUSED_ARG(callback_fn); |
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162 | LWIP_UNUSED_ARG(callback_arg); |
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163 | #endif /* LWIP_HTTPD_CUSTOM_FILES */ |
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164 | #endif /* LWIP_HTTPD_FS_ASYNC_READ */ |
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165 | } |
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166 | return 1; |
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167 | } |
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168 | #endif /* LWIP_HTTPD_FS_ASYNC_READ */ |
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169 | /*-----------------------------------------------------------------------------------*/ |
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170 | int |
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171 | fs_bytes_left(struct fs_file *file) |
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172 | { |
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173 | return file->len - file->index; |
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174 | } |