Asterisk source code analysis (main function)

File: The asterisk. c file under the main directory

1. code snippet:

/* if the progname is rasterisk consider it a remote console */if (argv[0] && (strstr(argv[0], "rasterisk")) != NULL) {    ast_set_flag(&ast_options, AST_OPT_FLAG_NO_FORK | AST_OPT_FLAG_REMOTE);}...case 'r':    ast_set_flag(&ast_options, AST_OPT_FLAG_NO_FORK | AST_OPT_FLAG_REMOTE);    break;

Note:

Running the rasterisk command on the terminal is equivalent to running asterisk-r, that is, the remote connection of asterisk.

2. code snippet:

if (getenv("HOME"))     snprintf(filename, sizeof(filename), "%s/.asterisk_history", getenv("HOME"));

Note: commands run in rasterisk (or asterisk-r) are recorded in. asterisk in the user's home directory.In the history file (for example,/root/. asteriskHistory)

Asterisk startup parameters

Code snippet:

case 'B': /* Force black background */    ast_set_flag(&ast_options, AST_OPT_FLAG_FORCE_BLACK_BACKGROUND);    ast_clear_flag(&ast_options, AST_OPT_FLAG_LIGHT_BACKGROUND);    break;  

Note:-B is forced to run with a black background, which is equivalent to setting forceblackbackground in the file/etc/asterisk. conf to yes.

Code snippet:

case 'X':    ast_set_flag(&ast_options, AST_OPT_FLAG_EXEC_INCLUDES);    break;

Note:-X can be used to configure commands such as "# exec" in the configuration file (for example, # exec/tmp/shellTest. sh), equivalent to the file/etc/asterisk. execincludes = yes in conf

Code snippet:

case 'C':    ast_copy_string(cfg_paths.config_file, optarg, sizeof(cfg_paths.config_file));    ast_set_flag(&ast_options, AST_OPT_FLAG_OVERRIDE_CONFIG);    break;

Note:-C file replaces the/etc/asterisk. conf file initialization program with file. The file here should be an absolute path.

Code snippet:

case 'c':    ast_set_flag(&ast_options, AST_OPT_FLAG_NO_FORK | AST_OPT_FLAG_CONSOLE);    break;

Note:-c runs in console mode, which is equivalent to configuring console = yes in the file/etc/asterisk. conf.

Code snippet:

case 'd':    option_debug++;    ast_set_flag(&ast_options, AST_OPT_FLAG_NO_FORK);    break;

Note:

In-d or-ddd debugging mode, the number of d is the debugging level. For example, "-ddd" is equivalent to configuring debug = 3 in the file/etc/asterisk. conf.

Code snippet:

case 'e':    if ((sscanf(&optarg[1], "%30ld", &option_minmemfree) != 1) || (option_minmemfree < 0)) {        option_minmemfree = 0;        }    break;  

Note:

-E memory is equivalent to configuring minmemfree = memory in the file/etc/asterisk. conf. When the available memory in the system is lower than the preset memory value, asterisk stops receiving new calls.

Code snippet:

case 'F':    ast_set_flag(&ast_options, AST_OPT_FLAG_ALWAYS_FORK);    break;

Note:

-F is equivalent to configuring alwaysfork = yes in the file/etc/asterisk. conf

Code snippet:

case 'f':        ast_set_flag(&ast_options, AST_OPT_FLAG_NO_FORK);        break;

Note:

-F is equivalent to configuring nofork = yes in the file/etc/asterisk. conf

Code snippet:

case 'G':    rungroup = ast_strdupa(optarg);    break;

Note:

-G group

Code snippet:

case 'g':    ast_set_flag(&ast_options, AST_OPT_FLAG_DUMP_CORE);    break;

Note:

-G fault dump Problems

Code snippet:

case 'h':    show_cli_help();    exit(0);

Note:

-H: Display help information

Code snippet:

case 'I':    ast_set_flag(&ast_options, AST_OPT_FLAG_INTERNAL_TIMING);    break;

Note:-I enables internal Timing If the DAHDI timer is available

Code snippet:

case 'i':    ast_set_flag(&ast_options, AST_OPT_FLAG_INIT_KEYS);    break;

Note:

-I initialize the encryption key at startup

Code snippet:

case 'L':    if ((sscanf(optarg, "%30lf", &option_maxload) != 1) || (option_maxload < 0.0)) {        option_maxload = 0.0;    }    break;

Note:

-L <load> limit the maximum average load before rejecting a new call

Code snippet:

case 'M':    if ((sscanf(optarg, "%30d", &option_maxcalls) != 1) || (option_maxcalls < 0)) {        option_maxcalls = 0;    }    break;

Note:

-M <value> specifies the maximum number of phone numbers.

Code snippet:

case 'm':    ast_set_flag(&ast_options, AST_OPT_FLAG_MUTE);    break;

Note:

-M shield output in the console

Code snippet:

case 'n':    ast_set_flag(&ast_options, AST_OPT_FLAG_NO_COLOR);    break;

Note:-n disables the color output function, for example, asterisk-n.

Code snippet:

case 'p':    ast_set_flag(&ast_options, AST_OPT_FLAG_HIGH_PRIORITY);    break;

Note:

-P runs as a Pseudo Real-Time Thread

Code snippet:

case 'q':    ast_set_flag(&ast_options, AST_OPT_FLAG_QUIET);    break;

Note:

-Q quiet mode (Suppress output)

Code snippet:

case 'R':    ast_set_flag(&ast_options, AST_OPT_FLAG_NO_FORK | AST_OPT_FLAG_REMOTE | AST_OPT_FLAG_RECONNECT);    break;

Note:

-R connects to the asterisk server of the Local Machine. After being disconnected, it will reconnect.

Code snippet:

case 'r':    ast_set_flag(&ast_options, AST_OPT_FLAG_NO_FORK | AST_OPT_FLAG_REMOTE);    break;

Note:

-R: connect to the local asterisk Server

Code snippet:

case 's':    remotesock = ast_strdupa(optarg);    break;

Note:

-S <socket-file> connects to asterisk through socket, which is valid when used together with the r parameter

Code snippet:

case 'T':    ast_set_flag(&ast_options, AST_OPT_FLAG_TIMESTAMP);    break;  

Note:

-T display time in CLI output

Code snippet:

case 't':    ast_set_flag(&ast_options, AST_OPT_FLAG_CACHE_RECORD_FILES);    break;

-:-T Record soundfiles in/var/tmp and move them where they belong after they are done

Code snippet:

case 'U':    runuser = ast_strdupa(optarg);    break;

Note:

-U <user> Run as user <user>

Code snippet:

case 'V':    show_version();    exit(0);

Note:

-V: display version information

Code snippet:

    case 'v':        option_verbose++;        ast_set_flag(&ast_options, AST_OPT_FLAG_NO_FORK);        break;

Note:

-V: multiple values. More information is displayed.

Code snippet:

case 'W': /* White background */    ast_set_flag(&ast_options, AST_OPT_FLAG_LIGHT_BACKGROUND);    ast_clear_flag(&ast_options, AST_OPT_FLAG_FORCE_BLACK_BACKGROUND);    break;

Note:

-W: Adjust terminal color

Code snippet:

case 'x':    ast_set_flag(&ast_options, AST_OPT_FLAG_EXEC | AST_OPT_FLAG_NO_COLOR);    xarg = ast_strdupa(optarg);    break;  

Note:

-X <cmd> run cli commands and use them with r parameters, for example, asterisk-rx 'core show channels'