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 - 2010-2011 |
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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 | struct item; |
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37 | |
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38 | static int scb_status_txt (int client, struct roar_vio_calls * vio, char * selector, char ** text, struct item * sitem); |
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39 | static int scb_test (int client, struct roar_vio_calls * vio, char * selector, char ** text, struct item * sitem); |
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40 | static int scb_clients (int client, struct roar_vio_calls * vio, char * selector, char ** text, struct item * sitem); |
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41 | static int scb_streams (int client, struct roar_vio_calls * vio, char * selector, char ** text, struct item * sitem); |
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42 | |
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43 | static struct roar_gopher_menu_item g_gopher_root_menu[] = { |
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44 | {.type = _INFO, .name = "roard Root Menu"}, |
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45 | {.type = _FILE, .name = "Server Info", .selector = "/info.txt", .host = NULL, .port = 0}, |
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46 | {.type = _FILE, .name = "Server Status", .selector = "/status.txt", .host = NULL, .port = 0}, |
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47 | {.type = _DIR, .name = "Clients", .selector = "/clients/", .host = NULL, .port = 0}, |
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48 | {.type = _DIR, .name = "Streams", .selector = "/streams/", .host = NULL, .port = 0}, |
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49 | }; |
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50 | |
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51 | static struct item { |
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52 | const char * selector; |
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53 | char type; |
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54 | struct roar_gopher_menu menu; |
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55 | struct roar_audio_info info; |
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56 | int dir; |
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57 | const char * text; |
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58 | int (*cb)(int client, struct roar_vio_calls * vio, char * selector, char ** text, struct item * sitem); |
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59 | } g_gopher_items[] = { |
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60 | {.selector = "", .type = _DIR, |
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61 | .menu = {.items = g_gopher_root_menu, .items_len = sizeof(g_gopher_root_menu)/sizeof(*g_gopher_root_menu)}, |
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62 | .cb = NULL |
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63 | }, |
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64 | // and again as selector '/' as some clients seems to require it: |
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65 | {.selector = "/", .type = _DIR, |
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66 | .menu = {.items = g_gopher_root_menu, .items_len = sizeof(g_gopher_root_menu)/sizeof(*g_gopher_root_menu)}, |
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67 | .cb = NULL |
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68 | }, |
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69 | {.selector = "/info.txt", .type = _FILE, .text = "Some\nText.", .cb = NULL}, |
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70 | {.selector = "/status.txt", .type = _FILE, .cb = scb_status_txt}, |
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71 | {.selector = "/test/*", .type = _FILE, .cb = scb_test}, |
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72 | {.selector = "/clients/", .type = _DIR, .cb = scb_clients}, |
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73 | {.selector = "/streams/", .type = _DIR, .cb = scb_streams} |
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74 | }; |
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75 | |
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76 | static int strselcmp(const char *s1, const char *s2); |
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77 | static ssize_t strseltok(const char *s1, char *s2, char ** tok, size_t toks); |
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78 | |
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79 | static int send_menu (int client, struct roar_gopher_menu * menu, struct roar_vio_calls * vio); |
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80 | static int send_text (int client, const char * text, struct roar_vio_calls * vio); |
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81 | |
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82 | |
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83 | // SCBs: |
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84 | static int scb_status_txt (int client, struct roar_vio_calls * vio, char * selector, char ** text, struct item * sitem) { |
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85 | const size_t len = 1024; |
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86 | const char * server_version = NULL; |
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87 | |
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88 | if ( DISTRIBUTION_VERSION_STRING[0] == 0 ) { |
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89 | server_version = "roard/" PACKAGE_VERSION " <" DEVICE_VENDOR_STRING ">"; |
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90 | } else { |
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91 | server_version = "roard/" PACKAGE_VERSION " <" DEVICE_VENDOR_STRING "> (" DISTRIBUTION_VERSION_STRING ")"; |
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92 | } |
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93 | |
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94 | *text = roar_mm_malloc(len); |
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95 | if ( *text == NULL ) |
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96 | return -1; |
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97 | |
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98 | **text = 0; |
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99 | |
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100 | snprintf(*text, len, |
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101 | "Server version: %s\r\n" |
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102 | "Server location: %s\r\n" |
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103 | "Server description: %s\r\n" |
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104 | "\r\n" |
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105 | "Counters current: %llu clients, %llu streams\r\n", |
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106 | server_version, |
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107 | g_config->location, |
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108 | g_config->description, |
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109 | (long long unsigned int)g_counters.cur.clients, |
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110 | (long long unsigned int)g_counters.cur.streams |
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111 | ); |
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112 | |
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113 | (*text)[len-1] = 0; |
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114 | return 0; |
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115 | } |
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116 | |
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117 | static int scb_test(int client, struct roar_vio_calls * vio, char * selector, char ** text, struct item * sitem) { |
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118 | ssize_t toks; |
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119 | char * tok; |
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120 | size_t len; |
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121 | |
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122 | toks = strseltok(sitem->selector, selector, &tok, 1); |
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123 | |
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124 | if ( toks == -1 ) |
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125 | return -1; |
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126 | |
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127 | len = strlen(tok); |
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128 | len += 64; |
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129 | |
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130 | *text = roar_mm_malloc(1024); |
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131 | if ( *text == NULL ) |
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132 | return -1; |
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133 | |
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134 | **text = 0; |
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135 | |
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136 | snprintf(*text, len, "Your text was: %s", tok); |
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137 | |
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138 | (*text)[len-1] = 0; |
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139 | |
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140 | return 0; |
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141 | } |
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142 | |
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143 | static int scb_clients (int client, struct roar_vio_calls * vio, char * selector, char ** text, struct item * sitem) { |
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144 | struct roar_gopher_menu_item items[ROAR_CLIENTS_MAX]; |
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145 | struct roar_gopher_menu menu = {.flags = 0, .items = items, .items_len = 0}; |
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146 | struct roar_gopher_menu_item * item; |
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147 | struct roar_client_server * cs; |
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148 | struct roar_client * c; |
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149 | const size_t len = 80; |
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150 | char * d; |
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151 | size_t i; |
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152 | int ret; |
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153 | |
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154 | memset(items, 0, sizeof(items)); |
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155 | |
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156 | for (i = 0; i < ROAR_CLIENTS_MAX; i++) { |
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157 | if ( (c = ROAR_CLIENT((cs = g_clients[i]))) != NULL ) { |
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158 | item = &(items[menu.items_len++]); |
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159 | item->type = _DIR; |
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160 | d = roar_mm_malloc(len); |
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161 | if ( d == NULL ) { |
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162 | menu.items_len--; |
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163 | continue; |
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164 | } |
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165 | if ( c->name != NULL && c->name[0] != 0 ) { |
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166 | snprintf(d, len, "Client %i: %s", (int)i, c->name); |
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167 | } else { |
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168 | snprintf(d, len, "Client %i", (int)i); |
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169 | } |
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170 | item->name = d; |
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171 | |
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172 | d = roar_mm_malloc(len); |
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173 | if ( d == NULL ) { |
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174 | if ( item->name != NULL ) |
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175 | roar_mm_free((void*)item->name); |
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176 | menu.items_len--; |
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177 | continue; |
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178 | } |
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179 | |
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180 | snprintf(d, len, "/clients/%i/", (int)i); |
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181 | item->selector = d; |
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182 | } |
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183 | } |
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184 | |
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185 | ret = send_menu(client, &menu, vio); |
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186 | |
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187 | for (i = 0; i < menu.items_len; i++) { |
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188 | if ( items[i].name != NULL ) |
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189 | roar_mm_free((void*)items[i].name); |
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190 | if ( items[i].selector != NULL ) |
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191 | roar_mm_free((void*)items[i].selector); |
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192 | } |
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193 | |
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194 | return ret; |
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195 | } |
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196 | |
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197 | static int scb_streams (int client, struct roar_vio_calls * vio, char * selector, char ** text, struct item * sitem) { |
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198 | struct roar_gopher_menu_item items[ROAR_STREAMS_MAX]; |
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199 | struct roar_gopher_menu menu = {.flags = 0, .items = items, .items_len = 0}; |
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200 | struct roar_gopher_menu_item * item; |
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201 | struct roar_stream_server * ss; |
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202 | struct roar_stream * s; |
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203 | const size_t len = 80; |
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204 | char * d; |
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205 | size_t i; |
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206 | int ret; |
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207 | |
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208 | memset(items, 0, sizeof(items)); |
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209 | |
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210 | for (i = 0; i < ROAR_STREAMS_MAX; i++) { |
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211 | if ( (s = ROAR_STREAM((ss = g_streams[i]))) != NULL ) { |
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212 | item = &(items[menu.items_len++]); |
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213 | item->type = _DIR; |
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214 | d = roar_mm_malloc(len); |
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215 | if ( d == NULL ) { |
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216 | menu.items_len--; |
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217 | continue; |
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218 | } |
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219 | if ( ss->name != NULL && ss->name[0] != 0 ) { |
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220 | snprintf(d, len, "Stream %i: %s", (int)i, ss->name); |
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221 | } else { |
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222 | snprintf(d, len, "Stream %i", (int)i); |
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223 | } |
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224 | item->name = d; |
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225 | |
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226 | d = roar_mm_malloc(len); |
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227 | if ( d == NULL ) { |
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228 | if ( item->name != NULL ) |
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229 | roar_mm_free((void*)item->name); |
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230 | menu.items_len--; |
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231 | continue; |
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232 | } |
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233 | |
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234 | snprintf(d, len, "/streams/%i/", (int)i); |
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235 | item->selector = d; |
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236 | } |
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237 | } |
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238 | |
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239 | ret = send_menu(client, &menu, vio); |
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240 | |
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241 | for (i = 0; i < menu.items_len; i++) { |
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242 | if ( items[i].name != NULL ) |
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243 | roar_mm_free((void*)items[i].name); |
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244 | if ( items[i].selector != NULL ) |
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245 | roar_mm_free((void*)items[i].selector); |
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246 | } |
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247 | |
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248 | return ret; |
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249 | } |
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250 | |
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251 | // other code: |
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252 | static int strip_nl (char * str) { |
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253 | register char c; |
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254 | |
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255 | for (; (c = *str) != 0; str++) { |
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256 | if ( c == '\r' || c == '\n' ) { |
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257 | *str = 0; |
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258 | return 1; |
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259 | } |
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260 | } |
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261 | |
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262 | return 0; |
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263 | } |
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264 | |
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265 | static int strselcmp(const char *s1, const char *s2) { |
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266 | register char a, b; |
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267 | |
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268 | if ( s1 == s2 ) |
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269 | return 0; |
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270 | |
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271 | if ( s1 == NULL || s2 == NULL ) |
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272 | return -1; |
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273 | |
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274 | for (; ; s1++, s2++) { |
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275 | a = *s1; |
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276 | b = *s2; |
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277 | |
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278 | if ( a == '*' ) { |
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279 | s1++; |
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280 | a = *s1; |
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281 | if ( a == 0 ) { |
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282 | if ( b == 0 ) { |
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283 | return 1; // no match! ('*' does not mach no-chars) |
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284 | } else { |
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285 | return 0; // match! (string ends with '*' and something not EOS is in b) |
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286 | } |
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287 | } else { |
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288 | for (; *s2 != 0 && *s2 != a; s2++); |
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289 | if ( a != *s2 ) |
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290 | return 1; // no match! (did not find correct char) |
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291 | } |
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292 | } else if ( a == 0 || b == 0 ) { |
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293 | if ( a == b ) { |
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294 | return 0; // match! |
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295 | } else { |
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296 | return 1; // no match! (dffrent length) |
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297 | } |
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298 | } else if ( a != b ) { |
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299 | return 1; // no match! (diffrent chars) |
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300 | } |
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301 | } |
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302 | |
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303 | return -1; |
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304 | } |
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305 | |
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306 | static ssize_t strseltok(const char *s1, char *s2, char ** tok, size_t toks) { |
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307 | register char a, b; |
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308 | size_t idx = 0; |
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309 | |
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310 | if ( s1 == NULL || s2 == NULL ) |
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311 | return -1; |
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312 | |
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313 | for (; ; s1++, s2++) { |
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314 | a = *s1; |
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315 | b = *s2; |
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316 | |
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317 | if ( a == 0 || b == 0 ) { |
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318 | if ( a == b ) { |
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319 | return idx; |
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320 | } else { |
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321 | return -1; |
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322 | } |
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323 | } else if ( a == '*' ) { |
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324 | s1++; |
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325 | a = *s1; |
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326 | if ( idx == toks ) |
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327 | return -1; |
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328 | |
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329 | tok[idx] = s2; |
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330 | idx++; |
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331 | |
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332 | for (; *s2 != 0 && *s2 != a; s2++); |
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333 | |
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334 | if ( a == 0 ) |
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335 | return idx; |
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336 | |
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337 | if ( *s1 == 0 ) |
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338 | return -1; |
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339 | |
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340 | *s2 = 0; |
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341 | } |
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342 | } |
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343 | |
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344 | return -1; |
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345 | } |
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346 | |
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347 | static int send_menu (int client, struct roar_gopher_menu * menu, struct roar_vio_calls * vio) { |
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348 | struct roar_buffer * buf; |
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349 | struct roar_gopher_menu_item * item; |
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350 | const size_t len = 80; |
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351 | size_t i; |
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352 | void * data; |
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353 | char * chardata; |
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354 | const char * host; |
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355 | unsigned int port; |
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356 | struct roar_sockname sockaddr; |
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357 | |
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358 | if ( roar_vio_ctl(vio, ROAR_VIO_CTL_GET_SOCKNAME, &sockaddr) == -1 ) { |
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359 | memset(&sockaddr, 0, sizeof(sockaddr)); |
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360 | } |
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361 | |
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362 | for (i = 0; i < menu->items_len; i++) { |
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363 | item = &(menu->items[i]); |
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364 | if ( roar_buffer_new_data(&buf, len, &data) == -1 ) { |
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365 | if ( sockaddr.addr != NULL ) |
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366 | roar_mm_free(sockaddr.addr); |
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367 | return -1; |
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368 | } |
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369 | |
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370 | chardata = data; |
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371 | |
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372 | switch (item->type) { |
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373 | case _INFO: |
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374 | snprintf(data, len-1, "i%s\tfake\t(NULL)\t0\r\n", item->name); |
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375 | break; |
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376 | default: |
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377 | host = item->host == NULL ? sockaddr.addr : item->host; |
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378 | port = item->port == 0 ? sockaddr.port : item->port; |
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379 | snprintf(data, len-1, "%c%s\t%s\t%s\t%u\r\n", item->type, item->name, item->selector, host, port); |
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380 | break; |
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381 | } |
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382 | |
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383 | chardata[len-1] = 0; |
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384 | |
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385 | roar_buffer_set_len(buf, strlen(data)); |
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386 | |
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387 | clients_add_output(client, buf); |
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388 | } |
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389 | |
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390 | if ( sockaddr.addr != NULL ) |
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391 | roar_mm_free(sockaddr.addr); |
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392 | |
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393 | return 0; |
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394 | } |
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395 | |
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396 | static int send_text (int client, const char * text, struct roar_vio_calls * vio) { |
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397 | struct roar_buffer * buf; |
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398 | void * data; |
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399 | size_t len = strlen(text); |
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400 | |
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401 | if ( roar_buffer_new_data(&buf, len+6, &data) == -1 ) |
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402 | return -1; |
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403 | |
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404 | memcpy(data, text, len); |
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405 | //memcpy(data+len, "\r\n.\r\n\0", 6); |
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406 | memcpy(data+len, "\0", 1); |
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407 | clients_add_output(client, buf); |
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408 | |
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409 | return 0; |
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410 | } |
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411 | |
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412 | int emul_gopher_check_client(int client, struct roar_vio_calls * vio) { |
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413 | struct roar_client_server * cs; |
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414 | struct roar_vio_calls rvio; |
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415 | struct item * c = NULL; |
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416 | char inbuf[1024]; |
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417 | ssize_t ret; |
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418 | size_t i; |
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419 | int funcret = -1; |
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420 | size_t len = 0; |
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421 | void * data; |
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422 | char * text; |
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423 | |
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424 | ROAR_DBG("emul_gopher_check_client(client=%i, vio=%p) = ?", client, vio); |
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425 | |
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426 | if ( clients_get_server(client, &cs) == -1 ) { |
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427 | clients_delete(client); |
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428 | return -1; |
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429 | } |
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430 | |
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431 | ROAR_DBG("emul_gopher_check_client(client=%i, vio=%p) = ?", client, vio); |
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432 | |
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433 | if ( vio == NULL ) { |
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434 | vio = &rvio; |
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435 | roar_vio_open_fh_socket(vio, clients_get_fh(client)); |
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436 | } |
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437 | |
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438 | ROAR_DBG("emul_gopher_check_client(client=%i, vio=%p) = ?", client, vio); |
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439 | |
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440 | if ( cs->inbuf != NULL ) { |
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441 | len = sizeof(inbuf)-1; |
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442 | if ( roar_buffer_shift_out(&(cs->inbuf), inbuf, &len) == -1 ) { |
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443 | clients_delete(client); |
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444 | return -1; |
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445 | } |
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446 | |
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447 | if ( cs->inbuf != NULL ) { |
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448 | roar_buffer_free(cs->inbuf); |
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449 | clients_delete(client); |
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450 | return -1; |
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451 | } |
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452 | |
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453 | // test if we have still buffer space left. |
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454 | if ( len == (sizeof(inbuf)-1) ) { |
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455 | clients_delete(client); |
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456 | return -1; |
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457 | } |
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458 | } |
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459 | |
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460 | ROAR_DBG("emul_gopher_check_client(client=%i, vio=%p) = ?", client, vio); |
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461 | |
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462 | ret = roar_vio_read(vio, inbuf+len, sizeof(inbuf)-len-1); |
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463 | if ( ret < 1 ) { |
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464 | clients_delete(client); |
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465 | ROAR_DBG("emul_gopher_check_client(client=%i, vio=%p) = -1", client, vio); |
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466 | return -1; |
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467 | } |
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468 | |
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469 | ret += len; |
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470 | |
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471 | inbuf[ret] = 0; |
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472 | |
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473 | ROAR_DBG("emul_gopher_check_client(client=%i, vio=%p) = ?", client, vio); |
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474 | |
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475 | if ( !strip_nl(inbuf) ) { |
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476 | if ( roar_buffer_new_data(&(cs->inbuf), ret, &data) == -1 ) { |
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477 | clients_delete(client); |
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478 | ROAR_DBG("emul_gopher_check_client(client=%i, vio=%p) = -1", client, vio); |
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479 | return -1; |
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480 | } |
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481 | |
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482 | memcpy(data, inbuf, ret); |
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483 | |
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484 | ROAR_DBG("emul_gopher_check_client(client=%i, vio=%p) = 0", client, vio); |
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485 | |
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486 | return 0; |
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487 | } |
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488 | |
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489 | ROAR_DBG("emul_gopher_check_client(client=%i, vio=%p) = ?", client, vio); |
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490 | |
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491 | for (i = 0; i < sizeof(g_gopher_items)/sizeof(*g_gopher_items); i++) { |
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492 | // if ( !strselcmp(g_gopher_items[i].selector, inbuf) ) { |
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493 | if ( !strselcmp(g_gopher_items[i].selector, inbuf) ) { |
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494 | c = &(g_gopher_items[i]); |
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495 | break; |
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496 | } |
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497 | } |
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498 | |
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499 | if ( c == NULL ) { |
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500 | clients_delete(client); |
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501 | ROAR_DBG("emul_gopher_check_client(client=%i, vio=%p) = -1", client, vio); |
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502 | return -1; |
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503 | } |
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504 | |
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505 | ROAR_DBG("emul_gopher_check_client(client=%i, vio=%p) = ?", client, vio); |
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506 | |
---|
507 | if ( c->cb != NULL ) { |
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508 | text = NULL; |
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509 | funcret = c->cb(client, vio, inbuf, &text, c); |
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510 | |
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511 | if ( funcret == 0 && text != NULL ) |
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512 | funcret = send_text(client, text, vio); |
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513 | |
---|
514 | if ( text != NULL ) |
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515 | roar_mm_free(text); |
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516 | } else { |
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517 | switch (c->type) { |
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518 | case _DIR: |
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519 | funcret = send_menu(client, &(c->menu), vio); |
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520 | break; |
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521 | case _FILE: |
---|
522 | funcret = send_text(client, c->text, vio); |
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523 | break; |
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524 | default: |
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525 | funcret = -1; |
---|
526 | break; |
---|
527 | } |
---|
528 | } |
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529 | |
---|
530 | ROAR_DBG("emul_gopher_check_client(client=%i, vio=%p) = ?", client, vio); |
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531 | |
---|
532 | if ( funcret == -1 ) { |
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533 | clients_delete(client); |
---|
534 | ROAR_DBG("emul_gopher_check_client(client=%i, vio=%p) = -1", client, vio); |
---|
535 | return -1; |
---|
536 | } |
---|
537 | |
---|
538 | ROAR_DBG("emul_gopher_check_client(client=%i, vio=%p) = 0", client, vio); |
---|
539 | |
---|
540 | return 0; |
---|
541 | } |
---|
542 | |
---|
543 | int emul_gopher_flushed_client(int client, struct roar_vio_calls * vio) { |
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544 | ROAR_DBG("emul_gopher_flushed_client(client=%i, vio=%p) = ?", client, vio); |
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545 | |
---|
546 | return clients_delete(client); |
---|
547 | } |
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548 | |
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549 | #endif |
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550 | |
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551 | //ll |
---|