1/*** 2 This file is part of PulseAudio. 3 4 Copyright 2004-2006 Lennart Poettering 5 6 PulseAudio is free software; you can redistribute it and/or modify 7 it under the terms of the GNU Lesser General Public License as published 8 by the Free Software Foundation; either version 2.1 of the License, 9 or (at your option) any later version. 10 11 PulseAudio is distributed in the hope that it will be useful, but 12 WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 General Public License for more details. 15 16 You should have received a copy of the GNU Lesser General Public License 17 along with PulseAudio; if not, see <http://www.gnu.org/licenses/>. 18***/ 19 20#ifdef HAVE_CONFIG_H 21#include <config.h> 22#endif 23 24#include <stdio.h> 25#include <stdlib.h> 26 27#include <pulse/xmalloc.h> 28 29#include <pulsecore/core-util.h> 30#include <pulsecore/ioline.h> 31#include <pulsecore/module.h> 32#include <pulsecore/client.h> 33#include <pulsecore/tokenizer.h> 34#include <pulsecore/strbuf.h> 35#include <pulsecore/cli-text.h> 36#include <pulsecore/cli-command.h> 37#include <pulsecore/log.h> 38#include <pulsecore/macro.h> 39 40#include "cli.h" 41 42#define PROMPT ">>> " 43 44struct pa_cli { 45 pa_core *core; 46 pa_ioline *line; 47 48 pa_cli_eof_cb_t eof_callback; 49 void *userdata; 50 51 pa_client *client; 52 53 bool fail, kill_requested; 54 int defer_kill; 55 56 bool interactive; 57 char *last_line; 58}; 59 60static void line_callback(pa_ioline *line, const char *s, void *userdata); 61static void client_kill(pa_client *c); 62 63pa_cli* pa_cli_new(pa_core *core, pa_iochannel *io, pa_module *m) { 64 char cname[256]; 65 pa_cli *c; 66 pa_client_new_data data; 67 pa_client *client; 68 69 pa_assert(io); 70 71 pa_iochannel_socket_peer_to_string(io, cname, sizeof(cname)); 72 73 pa_client_new_data_init(&data); 74 data.driver = __FILE__; 75 data.module = m; 76 pa_proplist_sets(data.proplist, PA_PROP_APPLICATION_NAME, cname); 77 client = pa_client_new(core, &data); 78 pa_client_new_data_done(&data); 79 80 if (!client) 81 return NULL; 82 83 c = pa_xnew0(pa_cli, 1); 84 c->core = core; 85 c->client = client; 86 pa_assert_se(c->line = pa_ioline_new(io)); 87 88 c->client->kill = client_kill; 89 c->client->userdata = c; 90 91 pa_ioline_set_callback(c->line, line_callback, c); 92 93 return c; 94} 95 96void pa_cli_free(pa_cli *c) { 97 pa_assert(c); 98 99 pa_ioline_close(c->line); 100 pa_ioline_unref(c->line); 101 pa_client_free(c->client); 102 pa_xfree(c->last_line); 103 pa_xfree(c); 104} 105 106static void client_kill(pa_client *client) { 107 pa_cli *c; 108 109 pa_assert(client); 110 pa_assert_se(c = client->userdata); 111 112 pa_log_debug("CLI client killed."); 113 114 if (c->defer_kill) 115 c->kill_requested = true; 116 else if (c->eof_callback) 117 c->eof_callback(c, c->userdata); 118} 119 120static void line_callback(pa_ioline *line, const char *s, void *userdata) { 121 pa_strbuf *buf; 122 pa_cli *c = userdata; 123 char *p; 124 125 pa_assert(line); 126 pa_assert(c); 127 128 if (!s) { 129 pa_log_debug("CLI got EOF from user."); 130 131 if (c->eof_callback) 132 c->eof_callback(c, c->userdata); 133 134 return; 135 } 136 137 /* Magic command, like they had in AT Hayes Modems! Those were the good days! */ 138 if (pa_streq(s, "/")) 139 s = c->last_line; 140 else if (s[0]) { 141 pa_xfree(c->last_line); 142 c->last_line = pa_xstrdup(s); 143 } 144 145 pa_assert_se(buf = pa_strbuf_new()); 146 c->defer_kill++; 147 if (pa_streq(s, "hello")) { 148 pa_strbuf_printf(buf, "Welcome to PulseAudio %s! " 149 "Use \"help\" for usage information.\n", PACKAGE_VERSION); 150 c->interactive = true; 151 } 152 else 153 pa_cli_command_execute_line(c->core, s, buf, &c->fail); 154 c->defer_kill--; 155 pa_ioline_puts(line, p = pa_strbuf_to_string_free(buf)); 156 pa_xfree(p); 157 158 if (c->kill_requested) { 159 if (c->eof_callback) 160 c->eof_callback(c, c->userdata); 161 } else if (c->interactive) 162 pa_ioline_puts(line, PROMPT); 163} 164 165void pa_cli_set_eof_callback(pa_cli *c, pa_cli_eof_cb_t cb, void *userdata) { 166 pa_assert(c); 167 168 c->eof_callback = cb; 169 c->userdata = userdata; 170} 171 172pa_module *pa_cli_get_module(pa_cli *c) { 173 pa_assert(c); 174 175 return c->client->module; 176} 177