* version 0.2.0

struct ast_cli_entry {
        /*! Null terminated list of the words of the command */
        char *cmda[AST_MAX_CMD_LEN];
        /*! Handler for the command (fd for output, # of arguments, argument list).  Returns RESULT_SHOWUSAGE for improper arguments */
        int (*handler)(int fd, int argc, char *argv[]);
        /*! Summary of the command (< 60 characters) */
        char *summary;
        /*! Detailed usage information */
        char *usage;
        /*! Generate a list of possible completions for a given word */
        char *(*generator)(char *line, char *word, int pos, int state);
        /*! For linking */
        struct ast_cli_entry *next;
        /*! For keeping track of usage */
        int inuse;
};

* int main(int argc, char *argv[])

• ast_ulaw_init(); ast_alaw_init(); callerid_init(); tdd_init();
• Check for options
• term_init();
• if (ast_tryconnect()) {
  • if (option_remote) {
    • exit(0);
  • } else {
    • exit(1);
  • }
• } else if (option_remote || option_exec) {
  • Unable to connect to remote asterisk
  • exit(1);
• }
• if (!option_verbose && !option_debug && !option_nofork && !option_console) {
  • daemon(0,0);
• }
• ast_makesocket();
• if (option_console || option_verbose || option_remote)
  • ast_register_verbose(console_verboser);
• init_logger()
• init_manager()
• ast_image_init()
• load_pbx()
• load_modules()
• init_framer()
• ast_cli_register(&astshutdownnow);
• ast_cli_register(&astshutdowngracefully);
• ast_cli_register(&astrestartnow);
• ast_cli_register(&astrestartgracefully);
• ast_cli_register(&astrestartwhenconvenient);
• ast_cli_register(&aborthalt);
• if (option_console) {
  • consolethread = pthread_self();
  • rl_callback_handler_install(tmp, consolehandler);
  • rl_completion_entry_function = (void *)(Function *)cli_generator;
  • for(;;) {
    • res = select(STDIN_FILENO + 1, &rfds, NULL, NULL, NULL);
    • if (res > 0) {
      • rl_callback_read_char();
        • enter key 가 입력되면, consolhandler 을 call 한다.
    • } else if (res < 1) {
      • rl_forced_update_display();
    • }
• } else {
  • select(0,NULL,NULL,NULL,NULL);
• }
• return 0;
  
  

* int ast_cli_register(struct ast_cli_entry *e)

* static void consolehandler(char *s)

• add_history(s);
• if (s0 == '!') {
  • shell command 를 수행하거나, shell 을 수행시킨다.
• } else
  • ast_cli_command(STDOUT_FILENO, s);
    
    

* int ast_cli_command(int fd, char *s)

• struct ast_cli_entry *e;
• e = find_cli(argv, 0);
• switch(e->handler(fd, x, argv)) {
• case RESULT_SHOWUSAGE:
  • ast_cli(fd, e->usage);
• }
  
  

static struct ast_cli_entry aborthalt = { { "abort", "halt", NULL }, handle_abort_halt, "Cancel a running halt", abort_halt_help };

* ast_cli_register 에 의해 static 으로 설정된 ast_cli_entry 를 linked list 에 넣는다.

* linked list 에서 해당하는 ast_cli_entry 를 찾아 handler 를 수행한다.

* handler 는 필요에 따라 각 channel, 각 application 등에서 설정한다.