Version 0.1.1 from FTP
authorMark Spencer <markster@digium.com>
Sun, 19 Dec 1999 22:38:55 +0000 (22:38 +0000)
committerMark Spencer <markster@digium.com>
Sun, 19 Dec 1999 22:38:55 +0000 (22:38 +0000)
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@142 65c4cc65-6c06-0410-ace0-fbb531ad65f3

asterisk.c
cli.c [new file with mode: 0755]
include/asterisk/cli.h [new file with mode: 0755]

index 1bc7be1..a794740 100755 (executable)
@@ -3,7 +3,7 @@
  *
  * Top level source file for asterisk
  * 
- * Copyright (C) 1999, Adtran Inc. and Linux Support Services, LLC
+ * Copyright (C) 1999, Mark Spencer
  *
  * Mark Spencer <markster@linux-support.net>
  *
 #include <stdlib.h>
 #include <asterisk/logger.h>
 #include <asterisk/options.h>
+#include <asterisk/cli.h>
 #include <stdio.h>
 #include <signal.h>
+#include <sched.h>
+#include <pthread.h>
+#include <readline/readline.h>
+#include <readline/history.h>
 #include "asterisk.h"
 
 int option_verbose=0;
 int option_debug=0;
 int option_nofork=0;
 int option_quiet=0;
+int option_highpriority=0;
+
+#define HIGH_PRIORITY 1
+#define HIGH_PRIORITY_SCHED SCHED_RR
 
 static void urg_handler(int num)
 {
@@ -33,31 +42,110 @@ static void urg_handler(int num)
        return;
 }
 
+static int set_priority(int pri)
+{
+       struct sched_param sched;
+       /* We set ourselves to a high priority, that we might pre-empt everything
+          else.  If your PBX has heavy activity on it, this is a good thing.  */
+       if (pri) {  
+               sched.sched_priority = HIGH_PRIORITY;
+               if (sched_setscheduler(0, HIGH_PRIORITY_SCHED, &sched)) {
+                       ast_log(LOG_WARNING, "Unable to set high priority\n");
+                       return -1;
+               }
+       } else {
+               sched.sched_priority = 0;
+               if (sched_setscheduler(0, SCHED_OTHER, &sched)) {
+                       ast_log(LOG_WARNING, "Unable to set normal priority\n");
+                       return -1;
+               }
+       }
+       return 0;
+}
+
 static void quit_handler(int num)
 {
+       static pthread_mutex_t quitlock = PTHREAD_MUTEX_INITIALIZER;
+       char filename[80] = "";
+       if (getenv("HOME")) 
+               snprintf(filename, sizeof(filename), "%s/.asterisk_history", getenv("HOME"));
+       /* Quit only once */
+       pthread_mutex_lock(&quitlock);
        /* Called on exit */
        if (option_verbose)
                ast_verbose("Asterisk ending (%d).\n", num);
        else if (option_debug)
                ast_log(LOG_DEBUG, "Asterisk ending (%d).\n", num);
+       if (strlen(filename))
+               write_history(filename);
        exit(0);
 }
 
+static pthread_t consolethread = -1;
+
+static void console_verboser(char *s, int pos, int replace, int complete)
+{
+       /* Return to the beginning of the line */
+       if (!pos)
+               fprintf(stdout, "\r");
+       fprintf(stdout, s + pos);
+       if (complete)
+       /* Wake up a select()ing console */
+               pthread_kill(consolethread, SIGURG);
+}
+
+static void consolehandler(char *s)
+{
+       /* Called when readline data is available */
+       if (s && strlen(s))
+               add_history(s);
+       if (s)
+               ast_cli_command(STDOUT_FILENO, s);
+}
+
+static char quit_help[] = 
+"Usage: quit\n"
+"       Exits Asterisk.\n";
+
+static int handle_quit(int fd, int argc, char *argv[])
+{
+       if (argc != 1)
+               return RESULT_SHOWUSAGE;
+       quit_handler(0);
+       return RESULT_SUCCESS;
+}
+
+#define ASTERISK_PROMPT "*CLI> "
+
+static struct ast_cli_entry quit =     { { "quit", NULL }, handle_quit, "Exit Asterisk", quit_help };
+
+static char *cli_generator(char *text, int state)
+{
+       return ast_cli_generator(rl_line_buffer, text, state);
+}
+
 int main(int argc, char *argv[])
 {
        char c;
+       fd_set rfds;
+       int res;
+       char filename[80] = "";
+       if (getenv("HOME")) 
+               snprintf(filename, sizeof(filename), "%s/.asterisk_history", getenv("HOME"));
        /* Check if we're root */
        if (geteuid()) {
                ast_log(LOG_ERROR, "Must be run as root\n");
                exit(1);
        }
        /* Check for options */
-       while((c=getopt(argc, argv, "dvq")) != EOF) {
+       while((c=getopt(argc, argv, "dvqp")) != EOF) {
                switch(c) {
                case 'd':
                        option_debug++;
                        option_nofork++;
-                       option_verbose++;
+                       break;
+               case 'p':
+                       option_highpriority++;
                        break;
                case 'v':
                        option_verbose++;
@@ -71,7 +159,7 @@ int main(int argc, char *argv[])
        }
        /* Print a welcome message if desired */
        if (option_verbose) {
-               ast_verbose( "Asterisk, Copyright (C) 1999 Adtran, Inc. and Linux Support Services, LLC\n");
+               ast_verbose( "Asterisk, Copyright (C) 1999 Mark Spencer\n");
                ast_verbose( "Written by Mark Spencer <markster@linux-support.net>\n");
                ast_verbose( "=========================================================================\n");
        }
@@ -85,10 +173,32 @@ int main(int argc, char *argv[])
                exit(1);
        if (load_modules())
                exit(1);
+       if (set_priority(option_highpriority))
+               exit(1);
        /* We might have the option of showing a console, but for now just
           do nothing... */
+
+       /* Console stuff now... */
+       /* Register our quit function */
+    ast_cli_register(&quit);
+       consolethread = pthread_self();
+       ast_register_verbose(console_verboser);
        if (option_verbose)
                ast_verbose( "Asterisk Ready.\n");
-       select(0,NULL,NULL,NULL,NULL);
+       if (strlen(filename))
+               read_history(filename);
+       rl_callback_handler_install(ASTERISK_PROMPT, consolehandler);
+       rl_completion_entry_function = (Function *)cli_generator;
+       for(;;) {
+               FD_ZERO(&rfds);
+               FD_SET(STDIN_FILENO, &rfds);
+               res = select(STDIN_FILENO + 1, &rfds, NULL, NULL, NULL);
+               if (res > 0) {
+                       rl_callback_read_char();
+               } else if (res < 1) {
+                       rl_forced_update_display();
+               }
+
+       }       
        return 0;
 }
diff --git a/cli.c b/cli.c
new file mode 100755 (executable)
index 0000000..5d7f880
--- /dev/null
+++ b/cli.c
@@ -0,0 +1,572 @@
+/*
+ * Asterisk -- A telephony toolkit for Linux.
+ *
+ * Standard Command Line Interface
+ * 
+ * Copyright (C) 1999, Mark Spencer
+ *
+ * Mark Spencer <markster@linux-support.net>
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <asterisk/logger.h>
+#include <asterisk/options.h>
+#include <asterisk/cli.h>
+#include <asterisk/module.h>
+#include <asterisk/channel.h>
+#include <sys/signal.h>
+#include <stdio.h>
+#include <signal.h>
+#include <string.h>
+#include <pthread.h>
+/* For rl_filename_completion */
+#include <readline/readline.h>
+/* For module directory */
+#include "asterisk.h"
+
+void ast_cli(int fd, char *fmt, ...)
+{
+       char stuff[4096];
+       va_list ap;
+       va_start(ap, fmt);
+       vsnprintf(stuff, sizeof(stuff), fmt, ap);
+       va_end(ap);
+       write(fd, stuff, strlen(stuff));
+}
+
+pthread_mutex_t clilock = PTHREAD_MUTEX_INITIALIZER;
+
+
+struct ast_cli_entry *helpers = NULL;
+
+static char load_help[] = 
+"Usage: load <module name>\n"
+"       Loads the specified module into Asterisk.\n";
+
+static char unload_help[] = 
+"Usage: unload [-f|-h] <module name>\n"
+"       Unloads the specified module from Asterisk.  The -f\n"
+"       option causes the module to be unloaded even if it is\n"
+"       in use (may cause a crash) and the -h module causes the\n"
+"       module to be unloaded even if the module says it cannot, \n"
+"       which almost always will cause a crash.\n";
+
+static char help_help[] =
+"Usage: help [topic]\n"
+"       When called with a topic as an argument, displays usage\n"
+"       information on the given command.  If called without a\n"
+"       topic, it provides a list of commands.\n";
+
+static char chanlist_help[] = 
+"Usage: show channels\n"
+"       Lists currently defined channels and some information about\n"
+"       them.\n";
+
+static int handle_load(int fd, int argc, char *argv[])
+{
+       if (argc != 2)
+               return RESULT_SHOWUSAGE;
+       if (ast_load_resource(argv[1])) {
+               ast_cli(fd, "Unable to load module %s\n", argv[1]);
+               return RESULT_FAILURE;
+       }
+       return RESULT_SUCCESS;
+}
+
+static int handle_unload(int fd, int argc, char *argv[])
+{
+       int x;
+       int force=AST_FORCE_SOFT;
+       if (argc < 2)
+               return RESULT_SHOWUSAGE;
+       for (x=1;x<argc;x++) {
+               if (argv[x][0] == '-') {
+                       switch(argv[x][1]) {
+                       case 'f':
+                               force = AST_FORCE_FIRM;
+                               break;
+                       case 'h':
+                               force = AST_FORCE_HARD;
+                               break;
+                       default:
+                               return RESULT_SHOWUSAGE;
+                       }
+               } else if (x !=  argc - 1) 
+                       return RESULT_SHOWUSAGE;
+               else if (ast_unload_resource(argv[x], force)) {
+                       ast_cli(fd, "Unable to unload resource %s\n", argv[x]);
+                       return RESULT_FAILURE;
+               }
+       }
+       return RESULT_SUCCESS;
+}
+
+#define MODLIST_FORMAT  "%-20s %-40.40s %-10d\n"
+#define MODLIST_FORMAT2 "%-20s %-40.40s %-10s\n"
+
+static pthread_mutex_t climodentrylock = PTHREAD_MUTEX_INITIALIZER;
+static int climodentryfd = -1;
+
+static int modlist_modentry(char *module, char *description, int usecnt)
+{
+       ast_cli(climodentryfd, MODLIST_FORMAT, module, description, usecnt);
+       return 0;
+}
+
+static char modlist_help[] =
+"Usage: show modules\n"
+"       Shows Asterisk modules currently in use, and usage "
+"statistics.\n";
+
+static int handle_modlist(int fd, int argc, char *argv[])
+{
+       if (argc != 2)
+               return RESULT_SHOWUSAGE;
+       pthread_mutex_lock(&climodentrylock);
+       climodentryfd = fd;
+       ast_cli(fd, MODLIST_FORMAT2, "Module", "Description", "Use Count");
+       ast_update_module_list(modlist_modentry);
+       climodentryfd = -1;
+       pthread_mutex_unlock(&climodentrylock);
+       return RESULT_SUCCESS;
+}
+
+static int handle_chanlist(int fd, int argc, char *argv[])
+{
+#define FORMAT_STRING  "%15s  (%-10s %-12s %-4d)  %-12s  %-15s\n"
+#define FORMAT_STRING2 "%15s  (%-10s %-12s %-4s)  %-12s  %-15s\n"
+       struct ast_channel *c=NULL;
+       if (argc != 2)
+               return RESULT_SHOWUSAGE;
+       c = ast_channel_walk(NULL);
+       ast_cli(fd, FORMAT_STRING2, "Channel", "Context", "Extension", "Pri", "Appl.", "Data");
+       while(c) {
+               ast_cli(fd, FORMAT_STRING, c->name, c->context, c->exten, c->priority, 
+               c->appl ? c->appl : "(None)", c->data ? ( strlen(c->data) ? c->data : "(Empty)" ): "(None)");
+               c = ast_channel_walk(c);
+       }
+       return RESULT_SUCCESS;
+}
+
+static char showchan_help[] = 
+"Usage: show channel <channel>\n"
+"       Shows lots of information about the specified channel.\n";
+
+static int handle_showchan(int fd, int argc, char *argv[])
+{
+       struct ast_channel *c=NULL;
+       if (argc != 3)
+               return RESULT_SHOWUSAGE;
+       c = ast_channel_walk(NULL);
+       while(c) {
+               if (!strcasecmp(c->name, argv[2])) {
+                       ast_cli(fd, 
+       " -- General --\n"
+       "           Name: %s\n"
+       "           Type: %s\n"
+       "     Translator: %s\n"
+       "         Master: %s\n"
+       "      Caller ID: %s\n"
+       "    DNID Digits: %s\n"
+       "          State: %d\n"
+       "          Rings: %d\n"
+       "         Format: %d\n"
+       "File Descriptor: %d\n"
+       " --   PBX   --\n"
+       "        Context: %s\n"
+       "      Extension: %s\n"
+       "       Priority: %d\n"
+       "    Application: %s\n"
+       "           Data: %s\n"
+       "          Stack: %d\n"
+       "    Blocking in: %s\n",
+       c->name, c->type, (c->trans ? c->trans->name : "(N/A)"),
+       (c->master ? c->master->name : "(N/A)"), (c->callerid ? c->callerid : "(N/A)"),
+       (c->dnid ? c->dnid : "(N/A)" ), c->state, c->rings, c->format,
+       c->fd, c->context, c->exten, c->priority, ( c->appl ? c->appl : "(N/A)" ),
+       ( c-> data ? (strlen(c->data) ? c->data : "(Empty)") : "(None)"),
+       c->stack, (c->blocking ? c->blockproc : "(Not Blocking)"));
+       
+               break;
+               }
+               c = ast_channel_walk(c);
+       }
+       if (!c) 
+               ast_cli(fd, "%s is not a known channel\n", argv[2]);
+       return RESULT_SUCCESS;
+}
+
+static char *complete_ch(char *line, char *word, int pos, int state)
+{
+       struct ast_channel *c;
+       int which=0;
+       c = ast_channel_walk(NULL);
+       while(c) {
+               if (++which > state)
+                       break;
+               c = ast_channel_walk(c);
+       }
+       return c ? strdup(c->name) : NULL;
+}
+
+static char *complete_fn(char *line, char *word, int pos, int state)
+{
+       char *c;
+       char filename[256];
+       if (pos != 1)
+               return NULL;
+       if (word[0] == '/')
+               strncpy(filename, word, sizeof(filename));
+       else
+               snprintf(filename, sizeof(filename), "%s/%s", AST_MODULE_DIR, word);
+       c = filename_completion_function(filename, state);
+       if (c && word[0] != '/')
+               c += (strlen(AST_MODULE_DIR) + 1);
+       return c ? strdup(c) : c;
+}
+
+static int handle_help(int fd, int argc, char *argv[]);
+
+static struct ast_cli_entry builtins[] = {
+       /* Keep alphabetized */
+       { { "show" , "channels", NULL }, handle_chanlist, "Display information on channels", chanlist_help },
+       { { "help", NULL }, handle_help, "Display help list, or specific help on a command", help_help },
+       { { "load", NULL }, handle_load, "Load a dynamic module by name", load_help, complete_fn },
+    { { "show", "modules", NULL }, handle_modlist, "List modules and info", modlist_help },
+       { { "show", "channel", NULL }, handle_showchan, "Display information on a specific channel", showchan_help, complete_ch },
+       { { "unload", NULL }, handle_unload, "Unload a dynamic module by name", unload_help, complete_fn },
+       { { NULL }, NULL, NULL, NULL }
+};
+
+static struct ast_cli_entry *find_cli(char *cmds[], int exact)
+{
+       int x;
+       int y;
+       int match;
+       struct ast_cli_entry *e=NULL;
+       for (x=0;builtins[x].cmda[0];x++) {
+               /* start optimistic */
+               match = 1;
+               for (y=0;match && cmds[y]; y++) {
+                       /* If there are no more words in the candidate command, then we're
+                          there.  */
+                       if (!builtins[x].cmda[y] && !exact)
+                               break;
+                       /* If there are no more words in the command (and we're looking for
+                          an exact match) or there is a difference between the two words,
+                          then this is not a match */
+                       if (!builtins[x].cmda[y] || strcasecmp(builtins[x].cmda[y], cmds[y]))
+                               match = 0;
+               }
+               /* If more words are needed to complete the command then this is not
+                  a candidate (unless we're looking for a really inexact answer  */
+               if ((exact > -1) && builtins[x].cmda[y])
+                       match = 0;
+               if (match)
+                       return &builtins[x];
+       }
+       for (e=helpers;e;e=e->next) {
+               match = 1;
+               for (y=0;match && e->cmda[y]; y++) {
+                       if (!e->cmda[y] && !exact)
+                               break;
+                       if (!e->cmda[y] || strcasecmp(e->cmda[y], cmds[y]))
+                               match = 0;
+               }
+               if ((exact > -1) && e->cmda[y])
+                       match = 0;
+               if (match)
+                       break;
+       }
+       return e;
+}
+
+static void join(char *s, int len, char *w[])
+{
+       int x;
+       /* Join words into a string */
+       strcpy(s, "");
+       for (x=0;w[x];x++) {
+               if (x)
+                       strncat(s, " ", len - strlen(s));
+               strncat(s, w[x], len - strlen(s));
+       }
+}
+
+static char *find_best(char *argv[])
+{
+       static char cmdline[80];
+       int x;
+       /* See how close we get, then print the  */
+       char *myargv[AST_MAX_CMD_LEN];
+       for (x=0;x<AST_MAX_CMD_LEN;x++)
+               myargv[x]=NULL;
+       for (x=0;argv[x];x++) {
+               myargv[x] = argv[x];
+               if (!find_cli(myargv, -1))
+                       break;
+       }
+       join(cmdline, sizeof(cmdline), myargv);
+       return cmdline;
+}
+
+int ast_cli_register(struct ast_cli_entry *e)
+{
+       struct ast_cli_entry *cur, *l=NULL;
+       char fulle[80], fulltst[80];
+       pthread_mutex_lock(&clilock);
+       join(fulle, sizeof(fulle), e->cmda);
+       if (find_cli(e->cmda, -1)) {
+               ast_log(LOG_WARNING, "Command '%s' already registered (or something close enough)\n", fulle);
+               pthread_mutex_unlock(&clilock);
+               return -1;
+       }
+       cur = helpers;
+       while(cur) {
+               join(fulltst, sizeof(fulltst), cur->cmda);
+               if (strcmp(fulle, fulltst) > 0) {
+                       /* Put it here */
+                       e->next = cur->next;
+                       cur->next = e;
+                       break;
+               }
+               l = cur;
+               cur = cur->next;
+       }
+       if (!cur) {
+               if (l)
+                       l->next = e;
+               else
+                       helpers = e;
+               e->next = NULL;
+       }
+       pthread_mutex_unlock(&clilock);
+       return 0;
+}
+
+static int help_workhorse(int fd, char *match[])
+{
+       char fullcmd1[80];
+       char fullcmd2[80];
+       char matchstr[80];
+       char *fullcmd;
+       struct ast_cli_entry *e, *e1, *e2;
+       e1 = builtins;
+       e2 = helpers;
+       if (match)
+               join(matchstr, sizeof(matchstr), match);
+       while(e1->cmda[0] || e2) {
+               if (e2)
+                       join(fullcmd2, sizeof(fullcmd2), e2->cmda);
+               if (e1->cmda[0])
+                       join(fullcmd1, sizeof(fullcmd1), e1->cmda);
+               if (!e1->cmda || 
+                               (e2 && (strcmp(fullcmd2, fullcmd1) < 0))) {
+                       /* Use e2 */
+                       e = e2;
+                       fullcmd = fullcmd2;
+                       /* Increment by going to next */
+                       e2 = e2->next;
+               } else {
+                       /* Use e1 */
+                       e = e1;
+                       fullcmd = fullcmd1;
+                       e1++;
+               }
+               if (match) {
+                       if (strncasecmp(matchstr, fullcmd, strlen(matchstr))) {
+                               continue;
+                       }
+               }
+               ast_cli(fd, "%15s   %s\n", fullcmd, e->summary);
+       }
+       return 0;
+}
+
+static int handle_help(int fd, int argc, char *argv[]) {
+       struct ast_cli_entry *e;
+       char fullcmd[80];
+       if ((argc < 1))
+               return RESULT_SHOWUSAGE;
+       if (argc > 1) {
+               e = find_cli(argv + 1, 1);
+               if (e) 
+                       ast_cli(fd, e->usage);
+               else {
+                       if (find_cli(argv + 1, -1)) {
+                               return help_workhorse(fd, argv + 1);
+                       } else {
+                               join(fullcmd, sizeof(fullcmd), argv+1);
+                               ast_cli(fd, "No such command '%s'.\n", fullcmd);
+                       }
+               }
+       } else {
+               return help_workhorse(fd, NULL);
+       }
+       return RESULT_SUCCESS;
+}
+
+static char *parse_args(char *s, int *max, char *argv[])
+{
+       char *dup, *cur;
+       int x=0;
+       int quoted=0;
+       int escaped=0;
+       int whitespace=1;
+
+       dup = strdup(s);
+       if (dup) {
+               cur = dup;
+               while(*s) {
+                       switch(*s) {
+                       case '"':
+                               /* If it's escaped, put a literal quote */
+                               if (escaped) 
+                                       goto normal;
+                               else 
+                                       quoted = !quoted;
+                               escaped = 0;
+                               break;
+                       case ' ':
+                       case '\t':
+                               if (!quoted && !escaped) {
+                                       /* If we're not quoted, mark this as whitespace, and
+                                          end the previous argument */
+                                       whitespace = 1;
+                                       *(cur++) = '\0';
+                               } else
+                                       /* Otherwise, just treat it as anything else */ 
+                                       goto normal;
+                               break;
+                       case '\\':
+                               /* If we're escaped, print a literal, otherwise enable escaping */
+                               if (escaped) {
+                                       goto normal;
+                               } else {
+                                       escaped=1;
+                               }
+                               break;
+                       default:
+normal:
+                               if (whitespace) {
+                                       if (x >= AST_MAX_ARGS -1) {
+                                               ast_log(LOG_WARNING, "Too many arguments, truncating\n");
+                                               break;
+                                       }
+                                       /* Coming off of whitespace, start the next argument */
+                                       argv[x++] = cur;
+                                       whitespace=0;
+                               }
+                               *(cur++) = *s;
+                               escaped=0;
+                       }
+                       s++;
+               }
+               /* Null terminate */
+               *(cur++) = '\0';
+               argv[x] = NULL;
+               *max = x;
+       }
+       return dup;
+}
+
+char *ast_cli_generator(char *text, char *word, int state)
+{
+       char *argv[AST_MAX_ARGS];
+       struct ast_cli_entry *e, *e1, *e2;
+       int x;
+       int matchnum=0;
+       char *dup, *res;
+       char fullcmd1[80];
+       char fullcmd2[80];
+       char matchstr[80];
+       char *fullcmd;
+
+       if ((dup = parse_args(text, &x, argv))) {
+               join(matchstr, sizeof(matchstr), argv);
+               pthread_mutex_lock(&clilock);
+               e1 = builtins;
+               e2 = helpers;
+               while(e1->cmda[0] || e2) {
+                       if (e2)
+                               join(fullcmd2, sizeof(fullcmd2), e2->cmda);
+                       if (e1->cmda[0])
+                               join(fullcmd1, sizeof(fullcmd1), e1->cmda);
+                       if (!e1->cmda || 
+                                       (e2 && (strcmp(fullcmd2, fullcmd1) < 0))) {
+                               /* Use e2 */
+                               e = e2;
+                               fullcmd = fullcmd2;
+                               /* Increment by going to next */
+                               e2 = e2->next;
+                       } else {
+                               /* Use e1 */
+                               e = e1;
+                               fullcmd = fullcmd1;
+                               e1++;
+                       }
+                       if (!strncasecmp(matchstr, fullcmd, strlen(matchstr))) {
+                               /* We contain the first part of one or more commands */
+                               matchnum++;
+                               if (matchnum > state) {
+                                       /* Now, what we're supposed to return is the next word... */
+                                       if (strlen(word)) {
+                                               res = e->cmda[x-1];
+                                       } else {
+                                               res = e->cmda[x];
+                                       }
+                                       if (res) {
+                                               pthread_mutex_unlock(&clilock);
+                                               return res ? strdup(res) : NULL;
+                                       }
+                               }
+                       }
+                       if (e->generator && !strncasecmp(matchstr, fullcmd, strlen(fullcmd))) {
+                               /* We have a command in its entirity within us -- theoretically only one
+                                  command can have this occur */
+                               fullcmd = e->generator(text, word, (strlen(word) ? (x - 1) : (x)), state);
+                               pthread_mutex_unlock(&clilock);
+                               return fullcmd;
+                       }
+                       
+               }
+               pthread_mutex_unlock(&clilock);
+               free(dup);
+       }
+       return NULL;
+}
+
+int ast_cli_command(int fd, char *s)
+{
+       char *argv[AST_MAX_ARGS];
+       struct ast_cli_entry *e;
+       int x;
+       char *dup;
+       x = AST_MAX_ARGS;
+       if ((dup = parse_args(s, &x, argv))) {
+               /* We need at least one entry, or ignore */
+               if (x > 0) {
+                       pthread_mutex_lock(&clilock);
+                       e = find_cli(argv, 0);
+                       if (e) {
+                               switch(e->handler(fd, x, argv)) {
+                               case RESULT_SHOWUSAGE:
+                                       ast_cli(fd, e->usage);
+                                       break;
+                               default:
+                               }
+                       } else 
+                               ast_cli(fd, "No such command '%s'\n", find_best(argv));
+                       pthread_mutex_unlock(&clilock);
+               }
+               free(dup);
+       } else {
+               ast_log(LOG_WARNING, "Out of memory\n");        
+               return -1;
+       }
+       return 0;
+}
diff --git a/include/asterisk/cli.h b/include/asterisk/cli.h
new file mode 100755 (executable)
index 0000000..3720e45
--- /dev/null
@@ -0,0 +1,66 @@
+/*
+ * Asterisk -- A telephony toolkit for Linux.
+ *
+ * Standard Command Line Interface
+ * 
+ * Copyright (C) 1999, Mark Spencer
+ *
+ * Mark Spencer <markster@linux-support.net>
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License
+ */
+
+#ifndef _ASTERISK_CLI_H
+#define _ASTERISK_CLI_H
+
+#if defined(__cplusplus) || defined(c_plusplus)
+extern "C" {
+#endif
+
+#include <stdarg.h>
+
+extern void ast_cli(int fd, char *fmt, ...);
+
+#define RESULT_SUCCESS         0
+#define RESULT_SHOWUSAGE       1
+#define RESULT_FAILURE         2
+
+#define AST_MAX_CMD_LEN        16
+
+/* A command line entry */
+#define AST_MAX_ARGS 64
+
+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;
+};
+
+/* Interpret a command s, sending output to fd */
+extern int ast_cli_command(int fd, char *s);
+
+/* Register your own command */
+extern int ast_cli_register(struct ast_cli_entry *e);
+
+/* Unregister your own command */
+extern int ast_cli_unregister(struct ast_cli_entry *e);
+
+/* Useful for readline, that's about it */
+extern char *ast_cli_generator(char *, char *, int);
+
+#if defined(__cplusplus) || defined(c_plusplus)
+}
+#endif
+
+#endif