1 | //emul_gopher.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010 |
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5 | * |
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6 | * This file is part of roard a part of RoarAudio, |
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7 | * a cross-platform sound system for both, home and professional use. |
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8 | * See README for details. |
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9 | * |
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10 | * This file is free software; you can redistribute it and/or modify |
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11 | * it under the terms of the GNU General Public License version 3 |
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12 | * as published by the Free Software Foundation. |
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13 | * |
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14 | * RoarAudio is distributed in the hope that it will be useful, |
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15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | * GNU General Public License for more details. |
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18 | * |
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19 | * You should have received a copy of the GNU General Public License |
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20 | * along with this software; see the file COPYING. If not, write to |
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21 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
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22 | * Boston, MA 02110-1301, USA. |
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23 | * |
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24 | */ |
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25 | |
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26 | #include "roard.h" |
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27 | |
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28 | #ifndef ROAR_WITHOUT_DCOMP_EMUL_GOPHER |
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29 | #include <roaraudio/proto_gopher.h> |
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30 | |
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31 | #define _INFO ROAR_GOPHER_TYPE_INFO |
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32 | #define _DIR ROAR_GOPHER_TYPE_DIR |
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33 | #define _FILE ROAR_GOPHER_TYPE_FILE |
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34 | #define _SOUND ROAR_GOPHER_TYPE_SOUND |
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35 | |
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36 | static struct roar_gopher_menu_item g_gopher_root_menu[] = { |
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37 | {.type = _INFO, .name = "roard Root Menu"}, |
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38 | {.type = _FILE, .name = "Server Info", .selector = "/info.txt", .host = NULL, .port = 0} |
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39 | }; |
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40 | |
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41 | static struct item { |
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42 | const char * selector; |
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43 | char type; |
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44 | struct roar_gopher_menu menu; |
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45 | struct roar_audio_info info; |
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46 | int dir; |
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47 | const char * text; |
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48 | } g_gopher_items[] = { |
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49 | {.selector = "", .type = _DIR, |
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50 | .menu = {.items = g_gopher_root_menu, .items_len = sizeof(g_gopher_root_menu)/sizeof(*g_gopher_root_menu)} |
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51 | }, |
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52 | // and again as selector '/' as some clients seems to require it: |
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53 | {.selector = "/", .type = _DIR, |
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54 | .menu = {.items = g_gopher_root_menu, .items_len = sizeof(g_gopher_root_menu)/sizeof(*g_gopher_root_menu)} |
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55 | }, |
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56 | {.selector = "/info.txt", .type = _FILE, .text = "Some\nText."} |
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57 | }; |
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58 | |
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59 | |
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60 | static int strip_nl (char * str) { |
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61 | register char c; |
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62 | |
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63 | for (; (c = *str) != 0; str++) { |
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64 | if ( c == '\r' || c == '\n' ) { |
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65 | *str = 0; |
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66 | return 1; |
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67 | } |
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68 | } |
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69 | |
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70 | return 0; |
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71 | } |
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72 | |
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73 | static int send_menu (int client, struct roar_gopher_menu * menu) { |
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74 | struct roar_buffer * buf; |
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75 | struct roar_gopher_menu_item * item; |
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76 | const size_t len = 80; |
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77 | size_t i; |
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78 | void * data; |
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79 | char * chardata; |
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80 | |
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81 | for (i = 0; i < menu->items_len; i++) { |
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82 | item = &(menu->items[i]); |
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83 | if ( roar_buffer_new_data(&buf, len, &data) == -1 ) |
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84 | return -1; |
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85 | |
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86 | chardata = data; |
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87 | |
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88 | switch (item->type) { |
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89 | case _INFO: |
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90 | snprintf(data, len-1, "i%s\tfake\t(NULL)\t0\r\n", item->name); |
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91 | break; |
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92 | default: |
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93 | snprintf(data, len-1, "%c%s\t%s\t%s\t%u\r\n", item->type, item->name, item->selector, item->host, item->port); |
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94 | break; |
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95 | } |
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96 | |
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97 | chardata[len-1] = 0; |
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98 | |
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99 | roar_buffer_set_len(buf, strlen(data)); |
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100 | |
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101 | clients_add_output(client, buf); |
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102 | } |
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103 | |
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104 | return 0; |
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105 | } |
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106 | |
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107 | static int send_text (int client, const char * text) { |
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108 | struct roar_buffer * buf; |
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109 | void * data; |
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110 | size_t len = strlen(text); |
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111 | |
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112 | if ( roar_buffer_new_data(&buf, len+6, &data) == -1 ) |
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113 | return -1; |
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114 | |
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115 | memcpy(data, text, len); |
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116 | memcpy(data+len, "\r\n.\r\n\0", 6); |
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117 | clients_add_output(client, buf); |
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118 | |
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119 | return 0; |
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120 | } |
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121 | |
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122 | int emul_gopher_check_client(int client, struct roar_vio_calls * vio) { |
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123 | struct roar_client_server * cs; |
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124 | struct roar_vio_calls rvio; |
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125 | struct item * c = NULL; |
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126 | char inbuf[1024]; |
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127 | ssize_t ret; |
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128 | size_t i; |
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129 | int funcret = -1; |
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130 | size_t len = 0; |
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131 | void * data; |
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132 | |
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133 | if ( clients_get_server(client, &cs) == -1 ) { |
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134 | clients_delete(client); |
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135 | return -1; |
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136 | } |
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137 | |
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138 | if ( vio == NULL ) { |
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139 | vio = &rvio; |
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140 | roar_vio_open_fh_socket(vio, clients_get_fh(client)); |
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141 | } |
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142 | |
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143 | if ( cs->inbuf != NULL ) { |
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144 | len = sizeof(inbuf)-1; |
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145 | if ( roar_buffer_shift_out(&(cs->inbuf), inbuf, &len) == -1 ) { |
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146 | clients_delete(client); |
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147 | return -1; |
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148 | } |
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149 | |
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150 | if ( cs->inbuf != NULL ) { |
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151 | roar_buffer_free(cs->inbuf); |
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152 | clients_delete(client); |
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153 | return -1; |
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154 | } |
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155 | |
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156 | // test if we have still buffer space left. |
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157 | if ( len == (sizeof(inbuf)-1) ) { |
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158 | clients_delete(client); |
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159 | return -1; |
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160 | } |
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161 | } |
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162 | |
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163 | ret = roar_vio_read(vio, inbuf+len, sizeof(inbuf)-len-1); |
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164 | if ( ret < 1 ) { |
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165 | clients_delete(client); |
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166 | return -1; |
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167 | } |
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168 | |
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169 | ret += len; |
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170 | |
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171 | inbuf[ret] = 0; |
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172 | |
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173 | if ( !strip_nl(inbuf) ) { |
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174 | if ( roar_buffer_new_data(&(cs->inbuf), ret, &data) == -1 ) { |
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175 | clients_delete(client); |
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176 | return -1; |
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177 | } |
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178 | |
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179 | memcpy(data, inbuf, ret); |
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180 | return 0; |
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181 | } |
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182 | |
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183 | for (i = 0; i < sizeof(g_gopher_items)/sizeof(*g_gopher_items); i++) { |
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184 | if ( !strcmp(g_gopher_items[i].selector, inbuf) ) { |
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185 | c = &(g_gopher_items[i]); |
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186 | break; |
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187 | } |
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188 | } |
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189 | |
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190 | if ( c == NULL ) { |
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191 | clients_delete(client); |
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192 | return -1; |
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193 | } |
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194 | |
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195 | switch (c->type) { |
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196 | case _DIR: |
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197 | funcret = send_menu(client, &(c->menu)); |
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198 | break; |
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199 | case _FILE: |
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200 | funcret = send_text(client, c->text); |
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201 | break; |
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202 | default: |
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203 | funcret = -1; |
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204 | break; |
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205 | } |
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206 | |
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207 | if ( funcret == -1 ) { |
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208 | clients_delete(client); |
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209 | return -1; |
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210 | } |
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211 | |
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212 | return 0; |
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213 | } |
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214 | |
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215 | int emul_gopher_flushed_client(int client, struct roar_vio_calls * vio) { |
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216 | return clients_delete(client); |
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217 | } |
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218 | |
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219 | #endif |
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220 | |
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221 | //ll |
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