[4699] | 1 | //emul_gopher.c: |
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| 2 | |
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| 3 | /* |
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[4708] | 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010-2011 |
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[4699] | 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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[4703] | 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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[4712] | 36 | static struct item; |
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| 37 | |
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| 38 | static int scb_status_txt (int client, struct roar_vio_calls * vio, const char * selector, char ** text, struct item * sitem); |
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| 39 | static int scb_clients (int client, struct roar_vio_calls * vio, const char * selector, char ** text, struct item * sitem); |
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| 40 | static int scb_streams (int client, struct roar_vio_calls * vio, const char * selector, char ** text, struct item * sitem); |
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[4706] | 41 | |
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[4703] | 42 | static struct roar_gopher_menu_item g_gopher_root_menu[] = { |
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| 43 | {.type = _INFO, .name = "roard Root Menu"}, |
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[4706] | 44 | {.type = _FILE, .name = "Server Info", .selector = "/info.txt", .host = NULL, .port = 0}, |
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[4707] | 45 | {.type = _FILE, .name = "Server Status", .selector = "/status.txt", .host = NULL, .port = 0}, |
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| 46 | {.type = _DIR, .name = "Clients", .selector = "/clients/", .host = NULL, .port = 0}, |
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| 47 | {.type = _DIR, .name = "Streams", .selector = "/streams/", .host = NULL, .port = 0}, |
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[4703] | 48 | }; |
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| 49 | |
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| 50 | static struct item { |
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| 51 | const char * selector; |
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| 52 | char type; |
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| 53 | struct roar_gopher_menu menu; |
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| 54 | struct roar_audio_info info; |
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| 55 | int dir; |
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| 56 | const char * text; |
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[4712] | 57 | int (*cb)(int client, struct roar_vio_calls * vio, const char * selector, char ** text, struct item * sitem); |
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[4703] | 58 | } g_gopher_items[] = { |
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| 59 | {.selector = "", .type = _DIR, |
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[4706] | 60 | .menu = {.items = g_gopher_root_menu, .items_len = sizeof(g_gopher_root_menu)/sizeof(*g_gopher_root_menu)}, |
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| 61 | .cb = NULL |
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[4703] | 62 | }, |
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| 63 | // and again as selector '/' as some clients seems to require it: |
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| 64 | {.selector = "/", .type = _DIR, |
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[4706] | 65 | .menu = {.items = g_gopher_root_menu, .items_len = sizeof(g_gopher_root_menu)/sizeof(*g_gopher_root_menu)}, |
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| 66 | .cb = NULL |
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[4703] | 67 | }, |
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[4706] | 68 | {.selector = "/info.txt", .type = _FILE, .text = "Some\nText.", .cb = NULL}, |
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[4707] | 69 | {.selector = "/status.txt", .type = _FILE, .cb = scb_status_txt}, |
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| 70 | {.selector = "/clients/", .type = _DIR, .cb = scb_clients}, |
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| 71 | {.selector = "/streams/", .type = _DIR, .cb = scb_streams} |
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[4703] | 72 | }; |
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| 73 | |
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[4711] | 74 | static int strselcmp(const char *s1, const char *s2); |
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[4712] | 75 | static ssize_t strseltok(const char *s1, char *s2, char ** tok, size_t toks); |
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[4711] | 76 | |
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[4707] | 77 | static int send_menu (int client, struct roar_gopher_menu * menu, struct roar_vio_calls * vio); |
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| 78 | static int send_text (int client, const char * text, struct roar_vio_calls * vio); |
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| 79 | |
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[4703] | 80 | |
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[4706] | 81 | // SCBs: |
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[4712] | 82 | static int scb_status_txt (int client, struct roar_vio_calls * vio, const char * selector, char ** text, struct item * sitem) { |
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[4706] | 83 | const size_t len = 1024; |
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| 84 | const char * server_version = NULL; |
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| 85 | |
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| 86 | if ( DISTRIBUTION_VERSION_STRING[0] == 0 ) { |
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| 87 | server_version = "roard/" PACKAGE_VERSION " <" DEVICE_VENDOR_STRING ">"; |
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| 88 | } else { |
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| 89 | server_version = "roard/" PACKAGE_VERSION " <" DEVICE_VENDOR_STRING "> (" DISTRIBUTION_VERSION_STRING ")"; |
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| 90 | } |
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| 91 | |
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| 92 | *text = roar_mm_malloc(1024); |
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| 93 | if ( *text == NULL ) |
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| 94 | return -1; |
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| 95 | |
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| 96 | **text = 0; |
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| 97 | |
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| 98 | snprintf(*text, len, |
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| 99 | "Server version: %s\r\n" |
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| 100 | "Server location: %s\r\n" |
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| 101 | "Server description: %s\r\n" |
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| 102 | "\r\n" |
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| 103 | "Counters current: %llu clients, %llu streams\r\n", |
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| 104 | server_version, |
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| 105 | g_config->location, |
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| 106 | g_config->description, |
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| 107 | (long long unsigned int)g_counters.cur.clients, |
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| 108 | (long long unsigned int)g_counters.cur.streams |
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| 109 | ); |
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| 110 | |
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| 111 | (*text)[len-1] = 0; |
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| 112 | return 0; |
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| 113 | } |
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| 114 | |
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[4712] | 115 | static int scb_clients (int client, struct roar_vio_calls * vio, const char * selector, char ** text, struct item * sitem) { |
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[4707] | 116 | struct roar_gopher_menu_item items[ROAR_CLIENTS_MAX]; |
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| 117 | struct roar_gopher_menu menu = {.flags = 0, .items = items, .items_len = 0}; |
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| 118 | struct roar_gopher_menu_item * item; |
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| 119 | struct roar_client_server * cs; |
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| 120 | struct roar_client * c; |
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| 121 | const size_t len = 80; |
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| 122 | char * d; |
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| 123 | size_t i; |
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| 124 | int ret; |
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| 125 | |
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| 126 | memset(items, 0, sizeof(items)); |
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| 127 | |
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| 128 | for (i = 0; i < ROAR_CLIENTS_MAX; i++) { |
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| 129 | if ( (c = ROAR_CLIENT((cs = g_clients[i]))) != NULL ) { |
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| 130 | item = &(items[menu.items_len++]); |
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| 131 | item->type = _DIR; |
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| 132 | d = roar_mm_malloc(len); |
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| 133 | if ( d == NULL ) { |
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| 134 | menu.items_len--; |
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| 135 | continue; |
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| 136 | } |
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| 137 | if ( c->name != NULL && c->name[0] != 0 ) { |
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| 138 | snprintf(d, len, "Client %i: %s", (int)i, c->name); |
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| 139 | } else { |
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| 140 | snprintf(d, len, "Client %i", (int)i); |
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| 141 | } |
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| 142 | item->name = d; |
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| 143 | |
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| 144 | d = roar_mm_malloc(len); |
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| 145 | if ( d == NULL ) { |
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| 146 | if ( item->name != NULL ) |
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| 147 | roar_mm_free((void*)item->name); |
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| 148 | menu.items_len--; |
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| 149 | continue; |
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| 150 | } |
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| 151 | |
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| 152 | snprintf(d, len, "/clients/%i/", (int)i); |
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| 153 | item->selector = d; |
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| 154 | } |
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| 155 | } |
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| 156 | |
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| 157 | ret = send_menu(client, &menu, vio); |
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| 158 | |
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| 159 | for (i = 0; i < menu.items_len; i++) { |
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| 160 | if ( items[i].name != NULL ) |
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| 161 | roar_mm_free((void*)items[i].name); |
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| 162 | if ( items[i].selector != NULL ) |
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| 163 | roar_mm_free((void*)items[i].selector); |
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| 164 | } |
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| 165 | |
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| 166 | return ret; |
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| 167 | } |
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| 168 | |
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[4712] | 169 | static int scb_streams (int client, struct roar_vio_calls * vio, const char * selector, char ** text, struct item * sitem) { |
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[4707] | 170 | struct roar_gopher_menu_item items[ROAR_STREAMS_MAX]; |
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| 171 | struct roar_gopher_menu menu = {.flags = 0, .items = items, .items_len = 0}; |
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| 172 | struct roar_gopher_menu_item * item; |
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| 173 | struct roar_stream_server * ss; |
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| 174 | struct roar_stream * s; |
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| 175 | const size_t len = 80; |
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| 176 | char * d; |
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| 177 | size_t i; |
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| 178 | int ret; |
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| 179 | |
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| 180 | memset(items, 0, sizeof(items)); |
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| 181 | |
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| 182 | for (i = 0; i < ROAR_STREAMS_MAX; i++) { |
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| 183 | if ( (s = ROAR_STREAM((ss = g_streams[i]))) != NULL ) { |
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| 184 | item = &(items[menu.items_len++]); |
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| 185 | item->type = _DIR; |
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| 186 | d = roar_mm_malloc(len); |
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| 187 | if ( d == NULL ) { |
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| 188 | menu.items_len--; |
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| 189 | continue; |
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| 190 | } |
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| 191 | if ( ss->name != NULL && ss->name[0] != 0 ) { |
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| 192 | snprintf(d, len, "Stream %i: %s", (int)i, ss->name); |
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| 193 | } else { |
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| 194 | snprintf(d, len, "Stream %i", (int)i); |
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| 195 | } |
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| 196 | item->name = d; |
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| 197 | |
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| 198 | d = roar_mm_malloc(len); |
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| 199 | if ( d == NULL ) { |
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| 200 | if ( item->name != NULL ) |
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| 201 | roar_mm_free((void*)item->name); |
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| 202 | menu.items_len--; |
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| 203 | continue; |
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| 204 | } |
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| 205 | |
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| 206 | snprintf(d, len, "/streams/%i/", (int)i); |
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| 207 | item->selector = d; |
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| 208 | } |
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| 209 | } |
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| 210 | |
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| 211 | ret = send_menu(client, &menu, vio); |
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| 212 | |
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| 213 | for (i = 0; i < menu.items_len; i++) { |
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| 214 | if ( items[i].name != NULL ) |
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| 215 | roar_mm_free((void*)items[i].name); |
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| 216 | if ( items[i].selector != NULL ) |
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| 217 | roar_mm_free((void*)items[i].selector); |
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| 218 | } |
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| 219 | |
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| 220 | return ret; |
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| 221 | } |
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[4706] | 222 | |
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| 223 | // other code: |
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[4703] | 224 | static int strip_nl (char * str) { |
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| 225 | register char c; |
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| 226 | |
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| 227 | for (; (c = *str) != 0; str++) { |
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| 228 | if ( c == '\r' || c == '\n' ) { |
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| 229 | *str = 0; |
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| 230 | return 1; |
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| 231 | } |
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| 232 | } |
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| 233 | |
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| 234 | return 0; |
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| 235 | } |
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| 236 | |
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[4711] | 237 | static int strselcmp(const char *s1, const char *s2) { |
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| 238 | register char a, b; |
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| 239 | |
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| 240 | if ( s1 == s2 ) |
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| 241 | return 0; |
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| 242 | |
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| 243 | if ( s1 == NULL || s2 == NULL ) |
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| 244 | return -1; |
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| 245 | |
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| 246 | for (; ; s1++, s2++) { |
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| 247 | a = *s1; |
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| 248 | b = *s2; |
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| 249 | |
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| 250 | if ( a == '*' ) { |
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| 251 | s1++; |
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| 252 | a = *s1; |
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| 253 | if ( a == 0 ) { |
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| 254 | if ( b == 0 ) { |
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| 255 | return 1; // no match! ('*' does not mach no-chars) |
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| 256 | } else { |
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| 257 | return 0; // match! (string ends with '*' and something not EOS is in b) |
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| 258 | } |
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| 259 | } else { |
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| 260 | for (; *s2 != 0 && *s2 != a; s2++); |
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| 261 | if ( a != *s2 ) |
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| 262 | return 1; // no match! (did not find correct char) |
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| 263 | } |
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| 264 | } else if ( a == 0 || b == 0 ) { |
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| 265 | if ( a == b ) { |
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| 266 | return 0; // match! |
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| 267 | } else { |
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| 268 | return 1; // no match! (dffrent length) |
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| 269 | } |
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| 270 | } else if ( a != b ) { |
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| 271 | return 1; // no match! (diffrent chars) |
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| 272 | } |
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| 273 | } |
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| 274 | |
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| 275 | return -1; |
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| 276 | } |
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| 277 | |
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[4712] | 278 | static ssize_t strseltok(const char *s1, char *s2, char ** tok, size_t toks) { |
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| 279 | register char a, b; |
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| 280 | size_t idx = 0; |
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| 281 | |
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| 282 | if ( s1 == NULL || s2 == NULL ) |
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| 283 | return -1; |
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| 284 | |
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| 285 | for (; ; s1++, s2++) { |
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| 286 | a = *s1; |
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| 287 | b = *s2; |
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| 288 | |
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| 289 | if ( a == 0 || b == 0 ) { |
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| 290 | if ( a == b ) { |
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| 291 | return idx; |
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| 292 | } else { |
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| 293 | return -1; |
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| 294 | } |
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| 295 | } else if ( a == '*' ) { |
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| 296 | s1++; |
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| 297 | a = *s1; |
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| 298 | if ( idx == toks ) |
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| 299 | return -1; |
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| 300 | |
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| 301 | tok[idx] = s2; |
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| 302 | idx++; |
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| 303 | |
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| 304 | for (; *s2 != 0 && *s2 != a; s2++); |
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| 305 | |
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| 306 | if ( a == 0 ) |
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| 307 | return idx; |
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| 308 | |
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| 309 | if ( *s1 == 0 ) |
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| 310 | return -1; |
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| 311 | |
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| 312 | *s2 = 0; |
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| 313 | } |
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| 314 | } |
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| 315 | |
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| 316 | return -1; |
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| 317 | } |
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| 318 | |
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[4705] | 319 | static int send_menu (int client, struct roar_gopher_menu * menu, struct roar_vio_calls * vio) { |
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[4703] | 320 | struct roar_buffer * buf; |
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| 321 | struct roar_gopher_menu_item * item; |
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| 322 | const size_t len = 80; |
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| 323 | size_t i; |
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| 324 | void * data; |
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| 325 | char * chardata; |
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[4705] | 326 | const char * host; |
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[4704] | 327 | unsigned int port; |
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[4705] | 328 | struct roar_sockname sockaddr; |
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| 329 | |
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| 330 | if ( roar_vio_ctl(vio, ROAR_VIO_CTL_GET_SOCKNAME, &sockaddr) == -1 ) { |
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| 331 | memset(&sockaddr, 0, sizeof(sockaddr)); |
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| 332 | } |
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[4703] | 333 | |
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| 334 | for (i = 0; i < menu->items_len; i++) { |
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| 335 | item = &(menu->items[i]); |
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[4705] | 336 | if ( roar_buffer_new_data(&buf, len, &data) == -1 ) { |
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| 337 | if ( sockaddr.addr != NULL ) |
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| 338 | roar_mm_free(sockaddr.addr); |
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[4703] | 339 | return -1; |
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[4705] | 340 | } |
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[4703] | 341 | |
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| 342 | chardata = data; |
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| 343 | |
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| 344 | switch (item->type) { |
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| 345 | case _INFO: |
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| 346 | snprintf(data, len-1, "i%s\tfake\t(NULL)\t0\r\n", item->name); |
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| 347 | break; |
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| 348 | default: |
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[4705] | 349 | host = item->host == NULL ? sockaddr.addr : item->host; |
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| 350 | port = item->port == 0 ? sockaddr.port : item->port; |
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[4704] | 351 | 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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[4703] | 352 | break; |
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| 353 | } |
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| 354 | |
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| 355 | chardata[len-1] = 0; |
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| 356 | |
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| 357 | roar_buffer_set_len(buf, strlen(data)); |
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| 358 | |
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| 359 | clients_add_output(client, buf); |
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| 360 | } |
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| 361 | |
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[4705] | 362 | if ( sockaddr.addr != NULL ) |
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| 363 | roar_mm_free(sockaddr.addr); |
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| 364 | |
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[4703] | 365 | return 0; |
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| 366 | } |
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| 367 | |
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[4705] | 368 | static int send_text (int client, const char * text, struct roar_vio_calls * vio) { |
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[4703] | 369 | struct roar_buffer * buf; |
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| 370 | void * data; |
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| 371 | size_t len = strlen(text); |
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| 372 | |
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| 373 | if ( roar_buffer_new_data(&buf, len+6, &data) == -1 ) |
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| 374 | return -1; |
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| 375 | |
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| 376 | memcpy(data, text, len); |
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[4706] | 377 | //memcpy(data+len, "\r\n.\r\n\0", 6); |
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| 378 | memcpy(data+len, "\0", 1); |
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[4703] | 379 | clients_add_output(client, buf); |
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| 380 | |
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| 381 | return 0; |
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| 382 | } |
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| 383 | |
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| 384 | int emul_gopher_check_client(int client, struct roar_vio_calls * vio) { |
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| 385 | struct roar_client_server * cs; |
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| 386 | struct roar_vio_calls rvio; |
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| 387 | struct item * c = NULL; |
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| 388 | char inbuf[1024]; |
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| 389 | ssize_t ret; |
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| 390 | size_t i; |
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| 391 | int funcret = -1; |
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| 392 | size_t len = 0; |
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| 393 | void * data; |
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[4706] | 394 | char * text; |
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[4703] | 395 | |
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| 396 | if ( clients_get_server(client, &cs) == -1 ) { |
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| 397 | clients_delete(client); |
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| 398 | return -1; |
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| 399 | } |
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| 400 | |
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| 401 | if ( vio == NULL ) { |
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| 402 | vio = &rvio; |
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| 403 | roar_vio_open_fh_socket(vio, clients_get_fh(client)); |
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| 404 | } |
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| 405 | |
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| 406 | if ( cs->inbuf != NULL ) { |
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| 407 | len = sizeof(inbuf)-1; |
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| 408 | if ( roar_buffer_shift_out(&(cs->inbuf), inbuf, &len) == -1 ) { |
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| 409 | clients_delete(client); |
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| 410 | return -1; |
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| 411 | } |
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| 412 | |
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| 413 | if ( cs->inbuf != NULL ) { |
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| 414 | roar_buffer_free(cs->inbuf); |
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| 415 | clients_delete(client); |
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| 416 | return -1; |
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| 417 | } |
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| 418 | |
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| 419 | // test if we have still buffer space left. |
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| 420 | if ( len == (sizeof(inbuf)-1) ) { |
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| 421 | clients_delete(client); |
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| 422 | return -1; |
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| 423 | } |
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| 424 | } |
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| 425 | |
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| 426 | ret = roar_vio_read(vio, inbuf+len, sizeof(inbuf)-len-1); |
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| 427 | if ( ret < 1 ) { |
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| 428 | clients_delete(client); |
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| 429 | return -1; |
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| 430 | } |
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| 431 | |
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| 432 | ret += len; |
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| 433 | |
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| 434 | inbuf[ret] = 0; |
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| 435 | |
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| 436 | if ( !strip_nl(inbuf) ) { |
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| 437 | if ( roar_buffer_new_data(&(cs->inbuf), ret, &data) == -1 ) { |
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| 438 | clients_delete(client); |
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| 439 | return -1; |
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| 440 | } |
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| 441 | |
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| 442 | memcpy(data, inbuf, ret); |
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| 443 | return 0; |
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| 444 | } |
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| 445 | |
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| 446 | for (i = 0; i < sizeof(g_gopher_items)/sizeof(*g_gopher_items); i++) { |
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[4711] | 447 | if ( !strselcmp(g_gopher_items[i].selector, inbuf) ) { |
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[4703] | 448 | c = &(g_gopher_items[i]); |
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| 449 | break; |
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| 450 | } |
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| 451 | } |
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| 452 | |
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| 453 | if ( c == NULL ) { |
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| 454 | clients_delete(client); |
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| 455 | return -1; |
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| 456 | } |
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| 457 | |
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[4706] | 458 | if ( c->cb != NULL ) { |
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| 459 | text = NULL; |
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[4712] | 460 | funcret = c->cb(client, vio, inbuf, &text, c); |
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[4706] | 461 | |
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| 462 | if ( funcret == 0 && text != NULL ) |
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| 463 | funcret = send_text(client, text, vio); |
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| 464 | |
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| 465 | if ( text != NULL ) |
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| 466 | roar_mm_free(text); |
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| 467 | } else { |
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| 468 | switch (c->type) { |
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| 469 | case _DIR: |
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| 470 | funcret = send_menu(client, &(c->menu), vio); |
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| 471 | break; |
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| 472 | case _FILE: |
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| 473 | funcret = send_text(client, c->text, vio); |
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| 474 | break; |
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| 475 | default: |
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| 476 | funcret = -1; |
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| 477 | break; |
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| 478 | } |
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[4703] | 479 | } |
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| 480 | |
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| 481 | if ( funcret == -1 ) { |
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| 482 | clients_delete(client); |
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| 483 | return -1; |
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| 484 | } |
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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 | int emul_gopher_flushed_client(int client, struct roar_vio_calls * vio) { |
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| 490 | return clients_delete(client); |
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| 491 | } |
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| 492 | |
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[4699] | 493 | #endif |
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| 494 | |
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| 495 | //ll |
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