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Last updated: Sat Feb 3 05:00:49 2007

Asterisk developer's documentation :: Codename Pineapple

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manager.c

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/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 1999 - 2006, Digium, Inc.
 *
 * Mark Spencer <markster@digium.com>
 *
 * See http://www.asterisk.org for more information about
 * the Asterisk project. Please do not directly contact
 * any of the maintainers of this project for assistance;
 * the project provides a web site, mailing lists and IRC
 * channels for your use.
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License Version 2. See the LICENSE file
 * at the top of the source tree.
 */

/*! \file
 *
 * \brief The Asterisk Management Interface - AMI
 *
 * \author Mark Spencer <markster@digium.com>
 *
 * At the moment this file contains a number of functions, namely:
 *
 * - data structures storing AMI state
 * - AMI-related API functions, used by internal asterisk components
 * - handlers for AMI-related CLI functions
 * - handlers for AMI functions (available through the AMI socket)
 * - the code for the main AMI listener thread and individual session threads
 * - the http handlers invoked for AMI-over-HTTP by the threads in main/http.c
 *
 * \ref amiconf
 */

/*! \addtogroup Group_AMI AMI functions
*/
/*! @{
 Doxygen group */

#include "asterisk.h"

ASTERISK_FILE_VERSION(__FILE__, "$Revision: 53128 $")

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <sys/time.h>
#include <sys/types.h>
#include <netdb.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <signal.h>
#include <errno.h>
#include <unistd.h>
#include <sys/mman.h>

#include "asterisk/channel.h"
#include "asterisk/file.h"
#include "asterisk/manager.h"
#include "asterisk/config.h"
#include "asterisk/callerid.h"
#include "asterisk/lock.h"
#include "asterisk/logger.h"
#include "asterisk/options.h"
#include "asterisk/cli.h"
#include "asterisk/app.h"
#include "asterisk/pbx.h"
#include "asterisk/md5.h"
#include "asterisk/acl.h"
#include "asterisk/utils.h"
#include "asterisk/http.h"
#include "asterisk/threadstorage.h"
#include "asterisk/linkedlists.h"

/*!
 * Linked list of events.
 * Global events are appended to the list by append_event().
 * The usecount is the number of stored pointers to the element,
 * excluding the list pointers. So an element that is only in
 * the list has a usecount of 0, not 1.
 *
 * Clients have a pointer to the last event processed, and for each
 * of these clients we track the usecount of the elements.
 * If we have a pointer to an entry in the list, it is safe to navigate
 * it forward because elements will not be deleted, but only appended.
 * The worst that can happen is seeing the pointer still NULL.
 *
 * When the usecount of an element drops to 0, and the element is the
 * first in the list, we can remove it. Removal is done within the
 * main thread, which is woken up for the purpose.
 *
 * For simplicity of implementation, we make sure the list is never empty.
 */
struct eventqent {
   int usecount;     /*!< # of clients who still need the event */
   int category;
   unsigned int seq; /*!< sequence number */
   AST_LIST_ENTRY(eventqent) eq_next;
   char eventdata[1];   /*!< really variable size, allocated by append_event() */
};

static AST_LIST_HEAD_STATIC(all_events, eventqent);

static int displayconnects = 1;
static int timestampevents;
static int httptimeout = 60;

static int block_sockets;
static int num_sessions;

static int manager_debug;  /*!< enable some debugging code in the manager */

/*!
 * Descriptor for a manager session, either on the AMI socket or over HTTP.
 * AMI session have managerid == 0; the entry is created upon a connect,
 * and destroyed with the socket.
 * HTTP sessions have managerid != 0, the value is used as a search key
 * to lookup sessions (using the mansession_id cookie).
 */
struct mansession {
   pthread_t ms_t;      /*!< Execution thread, basically useless */
   ast_mutex_t __lock;  /*!< Thread lock -- don't use in action callbacks, it's already taken care of  */
            /* XXX need to document which fields it is protecting */
   struct sockaddr_in sin; /*!< address we are connecting from */
   FILE *f;    /*!< fdopen() on the underlying fd */
   int fd;        /*!< descriptor used for output. Either the socket (AMI) or a temporary file (HTTP) */
   int inuse;     /*!< number of HTTP sessions using this entry */
   int needdestroy;  /*!< Whether an HTTP session should be destroyed */
   pthread_t waiting_thread;  /*!< Sleeping thread using this descriptor */
   unsigned long managerid;   /*!< Unique manager identifier, 0 for AMI sessions */
   time_t sessiontimeout;  /*!< Session timeout if HTTP */
   char username[80];   /*!< Logged in username */
   char challenge[10];  /*!< Authentication challenge */
   int authenticated;   /*!< Authentication status */
   int readperm;     /*!< Authorization for reading */
   int writeperm;    /*!< Authorization for writing */
   char inbuf[1025]; /*!< Buffer */
            /* we use the extra byte to add a '\0' and simplify parsing */
   int inlen;     /*!< number of buffered bytes */
   int send_events;  /*!<  XXX what ? */
   struct eventqent *last_ev; /*!< last event processed. */
   int writetimeout; /*!< Timeout for ast_carefulwrite() */
   AST_LIST_ENTRY(mansession) list;
};

#define NEW_EVENT(m) (AST_LIST_NEXT(m->last_ev, eq_next))

static AST_LIST_HEAD_STATIC(sessions, mansession);

/*! \brief user descriptor, as read from the config file.
 * \note It is still missing some fields -- e.g. we can have multiple permit and deny
 * lines which are not supported here, and readperm/writeperm/writetimeout
 * are not stored.
 */
struct ast_manager_user {
   char username[80];
   char *secret;
   char *deny;
   char *permit;
   char *read;
   char *write;
   int displayconnects; /*!< XXX unused */
   int keep;   /*!< mark entries created on a reload */
   AST_LIST_ENTRY(ast_manager_user) list;
};

/*! \brief list of users found in the config file */
static AST_LIST_HEAD_STATIC(users, ast_manager_user);

/*! \brief list of actions registered */
static struct manager_action *first_action;
AST_RWLOCK_DEFINE_STATIC(actionlock);

static AST_RWLIST_HEAD_STATIC(manager_hooks, manager_custom_hook);

/*! \brief Add a custom hook to be called when an event is fired */
void ast_manager_register_hook(struct manager_custom_hook *hook)
{
   AST_RWLIST_WRLOCK(&manager_hooks);
   AST_RWLIST_INSERT_TAIL(&manager_hooks, hook, list);
   AST_RWLIST_UNLOCK(&manager_hooks);
   return;
}

/*! \brief Delete a custom hook to be called when an event is fired */
void ast_manager_unregister_hook(struct manager_custom_hook *hook)
{
   AST_RWLIST_WRLOCK(&manager_hooks);
   AST_RWLIST_REMOVE(&manager_hooks, hook, list);
   AST_RWLIST_UNLOCK(&manager_hooks);
   return;
}

/*! \brief
 * Event list management functions.
 * We assume that the event list always has at least one element,
 * and the delete code will not remove the last entry even if the
 * 
 */
#if 0
static time_t __deb(time_t start, const char *msg)
{
   time_t now = time(NULL);
   ast_verbose("%4d th %p %s\n", (int)(now % 3600), pthread_self(), msg);
   if (start != 0 && now - start > 5)
      ast_verbose("+++ WOW, %s took %d seconds\n", msg, (int)(now - start));
   return now;
}

static void LOCK_EVENTS(void)
{
   time_t start = __deb(0, "about to lock events");
   AST_LIST_LOCK(&all_events);
   __deb(start, "done lock events");
}

static void UNLOCK_EVENTS(void)
{
   __deb(0, "about to unlock events");
   AST_LIST_UNLOCK(&all_events);
}

static void LOCK_SESS(void)
{
   time_t start = __deb(0, "about to lock sessions");
   AST_LIST_LOCK(&sessions);
   __deb(start, "done lock sessions");
}

static void UNLOCK_SESS(void)
{
   __deb(0, "about to unlock sessions");
   AST_LIST_UNLOCK(&sessions);
}
#endif

/*!
 * Grab a reference to the last event, update usecount as needed.
 * Can handle a NULL pointer.
 */
static struct eventqent *grab_last(void)
{
   struct eventqent *ret;

   AST_LIST_LOCK(&all_events);
   ret = AST_LIST_LAST(&all_events);
   /* the list is never empty now, but may become so when
    * we optimize it in the future, so be prepared.
    */
   if (ret)
      ast_atomic_fetchadd_int(&ret->usecount, 1);
   AST_LIST_UNLOCK(&all_events);
   return ret;
}

/*!
 * Purge unused events. Remove elements from the head
 * as long as their usecount is 0 and there is a next element.
 */
static void purge_events(void)
{
   struct eventqent *ev;

   AST_LIST_LOCK(&all_events);
   while ( (ev = AST_LIST_FIRST(&all_events)) &&
       ev->usecount == 0 && AST_LIST_NEXT(ev, eq_next)) {
      AST_LIST_REMOVE_HEAD(&all_events, eq_next);
      free(ev);
   }
   AST_LIST_UNLOCK(&all_events);
}

/*!
 * helper functions to convert back and forth between
 * string and numeric representation of set of flags
 */
static struct permalias {
   int num;
   char *label;
} perms[] = {
   { EVENT_FLAG_SYSTEM, "system" },
   { EVENT_FLAG_CALL, "call" },
   { EVENT_FLAG_LOG, "log" },
   { EVENT_FLAG_VERBOSE, "verbose" },
   { EVENT_FLAG_COMMAND, "command" },
   { EVENT_FLAG_AGENT, "agent" },
   { EVENT_FLAG_USER, "user" },
   { EVENT_FLAG_CONFIG, "config" },
   { -1, "all" },
   { 0, "none" },
};

/*! \brief Convert authority code to a list of options */
static char *authority_to_str(int authority, struct ast_str **res)
{
   int i;
   char *sep = "";

   (*res)->used = 0;
   for (i = 0; i < (sizeof(perms) / sizeof(perms[0])) - 1; i++) {
      if (authority & perms[i].num) {
         ast_str_append(res, 0, "%s%s", sep, perms[i].label);
         sep = ",";
      }
   }

   if ((*res)->used == 0)  /* replace empty string with something sensible */
      ast_str_append(res, 0, "<none>");

   return (*res)->str;
}

/*! Tells you if smallstr exists inside bigstr
   which is delim by delim and uses no buf or stringsep
   ast_instring("this|that|more","this",'|') == 1;

   feel free to move this to app.c -anthm */
static int ast_instring(const char *bigstr, const char *smallstr, const char delim)
{
   const char *val = bigstr, *next;

   do {
      if ((next = strchr(val, delim))) {
         if (!strncmp(val, smallstr, (next - val)))
            return 1;
         else
            continue;
      } else
         return !strcmp(smallstr, val);
   } while (*(val = (next + 1)));

   return 0;
}

static int get_perm(const char *instr)
{
   int x = 0, ret = 0;

   if (!instr)
      return 0;

   for (x = 0; x < (sizeof(perms) / sizeof(perms[0])); x++) {
      if (ast_instring(instr, perms[x].label, ','))
         ret |= perms[x].num;
   }

   return ret;
}

/*!
 * A number returns itself, false returns 0, true returns all flags,
 * other strings return the flags that are set.
 */
static int strings_to_mask(const char *string)
{
   const char *p;

   if (ast_strlen_zero(string))
      return -1;

   for (p = string; *p; p++)
      if (*p < '0' || *p > '9')
         break;
   if (!p)  /* all digits */
      return atoi(string);
   if (ast_false(string))
      return 0;
   if (ast_true(string)) { /* all permissions */
      int x, ret = 0;
      for (x=0; x<sizeof(perms) / sizeof(perms[0]); x++)
         ret |= perms[x].num;
      return ret;
   }
   return get_perm(string);
}

static char *complete_show_mancmd(const char *line, const char *word, int pos, int state)
{
   struct manager_action *cur;
   int l = strlen(word), which = 0;
   char *ret = NULL;

   ast_rwlock_rdlock(&actionlock);
   for (cur = first_action; cur; cur = cur->next) { /* Walk the list of actions */
      if (!strncasecmp(word, cur->action, l) && ++which > state) {
         ret = ast_strdup(cur->action);
         break;   /* make sure we exit even if ast_strdup() returns NULL */
      }
   }
   ast_rwlock_unlock(&actionlock);

   return ret;
}

/*!
 * lookup an entry in the list of registered users.
 * must be called with the list lock held.
 */
static struct ast_manager_user *get_manager_by_name_locked(const char *name)
{
   struct ast_manager_user *user = NULL;

   AST_LIST_TRAVERSE(&users, user, list)
      if (!strcasecmp(user->username, name))
         break;
   return user;
}

/*! \note The actionlock is read-locked by the caller of this function */
static int handle_showmancmd(int fd, int argc, char *argv[])
{
   struct manager_action *cur;
   struct ast_str *authority = ast_str_alloca(80);
   int num;

   if (argc != 4)
      return RESULT_SHOWUSAGE;

   for (cur = first_action; cur; cur = cur->next) { /* Walk the list of actions */
      for (num = 3; num < argc; num++) {
         if (!strcasecmp(cur->action, argv[num])) {
            ast_cli(fd, "Action: %s\nSynopsis: %s\nPrivilege: %s\n%s\n",
               cur->action, cur->synopsis,
               authority_to_str(cur->authority, &authority),
               S_OR(cur->description, "") );
         }
      }
   }

   return RESULT_SUCCESS;
}

static int handle_mandebug(int fd, int argc, char *argv[])
{
   if (argc == 2)
      ast_cli(fd, "manager debug is %s\n", manager_debug? "on" : "off");
   else if (argc == 3) {
      if (!strcasecmp(argv[2], "on"))
         manager_debug = 1;
      else if (!strcasecmp(argv[2], "off"))
         manager_debug = 0;
      else
         return RESULT_SHOWUSAGE;
   }
   return RESULT_SUCCESS;
}

static int handle_showmanager(int fd, int argc, char *argv[])
{
   struct ast_manager_user *user = NULL;

   if (argc != 4)
      return RESULT_SHOWUSAGE;

   AST_LIST_LOCK(&users);

   if (!(user = get_manager_by_name_locked(argv[3]))) {
      ast_cli(fd, "There is no manager called %s\n", argv[3]);
      AST_LIST_UNLOCK(&users);
      return -1;
   }

   ast_cli(fd,"\n");
   ast_cli(fd,
      "       username: %s\n"
      "         secret: %s\n"
      "           deny: %s\n"
      "         permit: %s\n"
      "           read: %s\n"
      "          write: %s\n"
      "displayconnects: %s\n",
      (user->username ? user->username : "(N/A)"),
      (user->secret ? user->secret : "(N/A)"),
      (user->deny ? user->deny : "(N/A)"),
      (user->permit ? user->permit : "(N/A)"),
      (user->read ? user->read : "(N/A)"),
      (user->write ? user->write : "(N/A)"),
      (user->displayconnects ? "yes" : "no"));

   AST_LIST_UNLOCK(&users);

   return RESULT_SUCCESS;
}


static int handle_showmanagers(int fd, int argc, char *argv[])
{
   struct ast_manager_user *user = NULL;
   int count_amu = 0;

   if (argc != 3)
      return RESULT_SHOWUSAGE;

   AST_LIST_LOCK(&users);

   /* If there are no users, print out something along those lines */
   if (AST_LIST_EMPTY(&users)) {
      ast_cli(fd, "There are no manager users.\n");
      AST_LIST_UNLOCK(&users);
      return RESULT_SUCCESS;
   }

   ast_cli(fd, "\nusername\n--------\n");

   AST_LIST_TRAVERSE(&users, user, list) {
      ast_cli(fd, "%s\n", user->username);
      count_amu++;
   }

   AST_LIST_UNLOCK(&users);

   ast_cli(fd,"-------------------\n");
   ast_cli(fd,"%d manager users configured.\n", count_amu);

   return RESULT_SUCCESS;
}


/*! \brief  CLI command  manager list commands */
static int handle_showmancmds(int fd, int argc, char *argv[])
{
   struct manager_action *cur;
   struct ast_str *authority = ast_str_alloca(80);
   char *format = "  %-15.15s  %-15.15s  %-55.55s\n";

   ast_cli(fd, format, "Action", "Privilege", "Synopsis");
   ast_cli(fd, format, "------", "---------", "--------");

   ast_rwlock_rdlock(&actionlock);
   for (cur = first_action; cur; cur = cur->next) /* Walk the list of actions */
      ast_cli(fd, format, cur->action, authority_to_str(cur->authority, &authority), cur->synopsis);
   ast_rwlock_unlock(&actionlock);

   return RESULT_SUCCESS;
}

/*! \brief CLI command manager list connected */
static int handle_showmanconn(int fd, int argc, char *argv[])
{
   struct mansession *s;
   char *format = "  %-15.15s  %-15.15s\n";

   ast_cli(fd, format, "Username", "IP Address");

   AST_LIST_LOCK(&sessions);
   AST_LIST_TRAVERSE(&sessions, s, list)
      ast_cli(fd, format,s->username, ast_inet_ntoa(s->sin.sin_addr));
   AST_LIST_UNLOCK(&sessions);

   return RESULT_SUCCESS;
}

/*! \brief CLI command manager list eventq */
/* Should change to "manager show connected" */
static int handle_showmaneventq(int fd, int argc, char *argv[])
{
   struct eventqent *s;

   AST_LIST_LOCK(&all_events);
   AST_LIST_TRAVERSE(&all_events, s, eq_next) {
      ast_cli(fd, "Usecount: %d\n",s->usecount);
      ast_cli(fd, "Category: %d\n", s->category);
      ast_cli(fd, "Event:\n%s", s->eventdata);
   }
   AST_LIST_UNLOCK(&all_events);

   return RESULT_SUCCESS;
}

static char showmancmd_help[] =
"Usage: manager show command <actionname>\n"
"  Shows the detailed description for a specific Asterisk manager interface command.\n";

static char showmancmds_help[] =
"Usage: manager show commands\n"
"  Prints a listing of all the available Asterisk manager interface commands.\n";

static char showmanconn_help[] =
"Usage: manager show connected\n"
"  Prints a listing of the users that are currently connected to the\n"
"Asterisk manager interface.\n";

static char showmaneventq_help[] =
"Usage: manager show eventq\n"
"  Prints a listing of all events pending in the Asterisk manger\n"
"event queue.\n";

static char showmanagers_help[] =
"Usage: manager show users\n"
"       Prints a listing of all managers that are currently configured on that\n"
" system.\n";

static char showmanager_help[] =
" Usage: manager show user <user>\n"
"        Display all information related to the manager user specified.\n";

static struct ast_cli_entry cli_manager[] = {
   { { "manager", "show", "command", NULL },
   handle_showmancmd, "Show a manager interface command",
   showmancmd_help, complete_show_mancmd },

   { { "manager", "show", "commands", NULL },
   handle_showmancmds, "List manager interface commands",
   showmancmds_help },

   { { "manager", "show", "connected", NULL },
   handle_showmanconn, "List connected manager interface users",
   showmanconn_help },

   { { "manager", "show", "eventq", NULL },
   handle_showmaneventq, "List manager interface queued events",
   showmaneventq_help },

   { { "manager", "show", "users", NULL },
   handle_showmanagers, "List configured manager users",
   showmanagers_help, NULL, NULL },

   { { "manager", "show", "user", NULL },
   handle_showmanager, "Display information on a specific manager user",
   showmanager_help, NULL, NULL },

   { { "manager", "debug", NULL },
   handle_mandebug, "Show, enable, disable debugging of the manager code",
   "Usage: manager debug [on|off]\n Show, enable, disable debugging of the manager code.\n", NULL, NULL },
};

/*
 * Decrement the usecount for the event; if it goes to zero,
 * (why check for e->next ?) wakeup the
 * main thread, which is in charge of freeing the record.
 * Returns the next record.
 */
static struct eventqent *unref_event(struct eventqent *e)
{
   ast_atomic_fetchadd_int(&e->usecount, -1);
   return AST_LIST_NEXT(e, eq_next);
}

static void ref_event(struct eventqent *e)
{
   ast_atomic_fetchadd_int(&e->usecount, 1);
}

/*
 * destroy a session, leaving the usecount
 */
static void free_session(struct mansession *s)
{
   struct eventqent *eqe = s->last_ev;
   if (s->f != NULL)
      fclose(s->f);
   ast_mutex_destroy(&s->__lock);
   free(s);
   unref_event(eqe);
}

static void destroy_session(struct mansession *s)
{
   AST_LIST_LOCK(&sessions);
   AST_LIST_REMOVE(&sessions, s, list);
   AST_LIST_UNLOCK(&sessions);

   ast_atomic_fetchadd_int(&num_sessions, -1);
   free_session(s);
}

const char *astman_get_header(const struct message *m, char *var)
{
   int x, l = strlen(var);

   for (x = 0; x < m->hdrcount; x++) {
      const char *h = m->headers[x];
      if (!strncasecmp(var, h, l) && h[l] == ':' && h[l+1] == ' ')
         return h + l + 2;
   }

   return "";
}

struct ast_variable *astman_get_variables(const struct message *m)
{
   int varlen, x, y;
   struct ast_variable *head = NULL, *cur;

   AST_DECLARE_APP_ARGS(args,
      AST_APP_ARG(vars)[32];
   );

   varlen = strlen("Variable: ");

   for (x = 0; x < m->hdrcount; x++) {
      char *parse, *var, *val;

      if (strncasecmp("Variable: ", m->headers[x], varlen))
         continue;
      parse = ast_strdupa(m->headers[x] + varlen);

      AST_STANDARD_APP_ARGS(args, parse);
      if (!args.argc)
         continue;
      for (y = 0; y < args.argc; y++) {
         if (!args.vars[y])
            continue;
         var = val = ast_strdupa(args.vars[y]);
         strsep(&val, "=");
         if (!val || ast_strlen_zero(var))
            continue;
         cur = ast_variable_new(var, val);
         cur->next = head;
         head = cur;
      }
   }

   return head;
}

/*!
 * helper function to send a string to the socket.
 * Return -1 on error (e.g. buffer full).
 */
static int send_string(struct mansession *s, char *string)
{
   int len = strlen(string);  /* residual length */
   char *src = string;
   struct timeval start = ast_tvnow();
   int n = 0;

   for (;;) {
      int elapsed;
      struct pollfd fd;
      n = fwrite(src, 1, len, s->f);   /* try to write the string, non blocking */
      if (n == len /* ok */ || n < 0 /* error */)
         break;
      len -= n;   /* skip already written data */
      src += n;
      fd.fd = s->fd;
      fd.events = POLLOUT;
      n = -1;     /* error marker */
      elapsed = ast_tvdiff_ms(ast_tvnow(), start);
      if (elapsed > s->writetimeout)
         break;
      if (poll(&fd, 1, s->writetimeout - elapsed) < 1)
         break;
   }
   fflush(s->f);
   return n < 0 ? -1 : 0;
}

/* XXX see if it can be moved inside the function */
AST_THREADSTORAGE(astman_append_buf);
#define ASTMAN_APPEND_BUF_INITSIZE   256

/*!
 * utility functions for creating AMI replies
 */
void astman_append(struct mansession *s, const char *fmt, ...)
{
   va_list ap;
   struct ast_str *buf;

   if (!(buf = ast_str_thread_get(&astman_append_buf, ASTMAN_APPEND_BUF_INITSIZE)))
      return;

   va_start(ap, fmt);
   ast_str_set_va(&buf, 0, fmt, ap);
   va_end(ap);

   if (s->f != NULL)
      send_string(s, buf->str);
   else
      ast_verbose("fd == -1 in astman_append, should not happen\n");
}

/*! \note NOTE: XXX this comment is unclear and possibly wrong.
   Callers of astman_send_error(), astman_send_response() or astman_send_ack() must EITHER
   hold the session lock _or_ be running in an action callback (in which case s->busy will
   be non-zero). In either of these cases, there is no need to lock-protect the session's
   fd, since no other output will be sent (events will be queued), and no input will
   be read until either the current action finishes or get_input() obtains the session
   lock.
 */

/*! \brief send a response with an optional message,
 * and terminate it with an empty line.
 * m is used only to grab the 'ActionID' field.
 *
 * Use the explicit constant MSG_MOREDATA to remove the empty line.
 * XXX MSG_MOREDATA should go to a header file.
 */
#define MSG_MOREDATA ((char *)astman_send_response)
static void astman_send_response_full(struct mansession *s, const struct message *m, char *resp, char *msg, char *listflag)
{
   const char *id = astman_get_header(m,"ActionID");

   astman_append(s, "Response: %s\r\n", resp);
   if (!ast_strlen_zero(id))
      astman_append(s, "ActionID: %s\r\n", id);
   if (listflag)
      astman_append(s, "Eventlist: %s\r\n", listflag);   /* Start, complete, cancelled */
   if (msg == MSG_MOREDATA)
      return;
   else if (msg)
      astman_append(s, "Message: %s\r\n\r\n", msg);
   else
      astman_append(s, "\r\n");
}

void astman_send_response(struct mansession *s, const struct message *m, char *resp, char *msg)
{
   astman_send_response_full(s, m, resp, msg, NULL);
}

void astman_send_error(struct mansession *s, const struct message *m, char *error)
{
   astman_send_response_full(s, m, "Error", error, NULL);
}

void astman_send_ack(struct mansession *s, const struct message *m, char *msg)
{
   astman_send_response_full(s, m, "Success", msg, NULL);
}

static void astman_start_ack(struct mansession *s, const struct message *m)
{
   astman_send_response_full(s, m, "Success", MSG_MOREDATA, NULL);
}

void astman_send_listack(struct mansession *s, const struct message *m, char *msg, char *listflag)
{
   astman_send_response_full(s, m, "Success", msg, listflag);
}


/*! \brief
   Rather than braindead on,off this now can also accept a specific int mask value
   or a ',' delim list of mask strings (the same as manager.conf) -anthm
*/
static int set_eventmask(struct mansession *s, const char *eventmask)
{
   int maskint = strings_to_mask(eventmask);

   ast_mutex_lock(&s->__lock);
   if (maskint >= 0)
      s->send_events = maskint;
   ast_mutex_unlock(&s->__lock);

   return maskint;
}

/*
 * Here we start with action_ handlers for AMI actions,
 * and the internal functions used by them.
 * Generally, the handlers are called action_foo()
 */

/* helper function for action_login() */
static int authenticate(struct mansession *s, const struct message *m)
{
   const char *user = astman_get_header(m, "Username");
   int error = -1;
   struct ast_ha *ha = NULL;
   char *password = NULL;
   int readperm = 0, writeperm = 0;

   if (ast_strlen_zero(user)) /* missing username */
      return -1;

    {
   /*
    * XXX there should be no need to scan the config file again here,
    * suffices to call get_manager_by_name_locked() to fetch
    * the user's entry.
    */
   struct ast_config *cfg = ast_config_load("manager.conf");
   char *cat = NULL;
   struct ast_variable *v;

   if (!cfg)
      return -1;
   while ( (cat = ast_category_browse(cfg, cat)) ) {
      /* "general" is not a valid user */
      if (strcasecmp(cat, user) || !strcasecmp(cat, "general"))
         continue;
      /* collect parameters for the user's entry */
      for (v = ast_variable_browse(cfg, cat); v; v = v->next) {
         if (!strcasecmp(v->name, "secret"))
            password = ast_strdupa(v->value);
         else if (!strcasecmp(v->name, "read"))
            readperm = get_perm(v->value);
         else if (!strcasecmp(v->name, "write"))
            writeperm = get_perm(v->value);
         else if (!strcasecmp(v->name, "permit") ||
               !strcasecmp(v->name, "deny")) {
            ha = ast_append_ha(v->name, v->value, ha, NULL);
         } else if (!strcasecmp(v->name, "writetimeout")) {
            int val = atoi(v->value);
   
            if (val < 100)
               ast_log(LOG_WARNING, "Invalid writetimeout value '%s' at line %d\n", v->value, v->lineno);
            else
               s->writetimeout = val;
         }
      }
      break;
   }

   ast_config_destroy(cfg);
   if (!cat) {
      /* Didn't find the user in manager.conf, check users.conf */
      int hasmanager = 0;
      cfg = ast_config_load("users.conf");
      if (!cfg)
         return -1;
      while ( (cat = ast_category_browse(cfg, cat)) ) {
         if (!strcasecmp(cat, user) && strcasecmp(cat, "general"))
            break;
      }
      if (!cat) {
         ast_log(LOG_NOTICE, "%s tried to authenticate with nonexistent user '%s'\n", ast_inet_ntoa(s->sin.sin_addr), user);
         ast_config_destroy(cfg);
         return -1;
      }
      /* collect parameters for the user's entry from users.conf */
      for (v = ast_variable_browse(cfg, cat); v; v = v->next) {
         if (!strcasecmp(v->name, "secret"))
            password = ast_strdupa(v->value);
         else if (!strcasecmp(v->name, "read"))
            readperm = get_perm(v->value);
         else if (!strcasecmp(v->name, "write"))
            writeperm = get_perm(v->value);
         else if (!strcasecmp(v->name, "permit") ||
               !strcasecmp(v->name, "deny")) {
            ha = ast_append_ha(v->name, v->value, ha, NULL);
         } else if (!strcasecmp(v->name, "writetimeout")) {
            int val = atoi(v->value);
   
            if (val < 100)
               ast_log(LOG_WARNING, "Invalid writetimeout value '%s' at line %d\n", v->value, v->lineno);
            else
               s->writetimeout = val;
         } else if (!strcasecmp(v->name, "hasmanager")) {
            hasmanager = ast_true(v->value);
         }
      }
      ast_config_destroy(cfg);
      if (!hasmanager) {
         ast_log(LOG_NOTICE, "%s tried to authenticate with nonexistent user '%s'\n", ast_inet_ntoa(s->sin.sin_addr), user);
         return -1;
      }
   }

   }

   if (ha) {
      int good = ast_apply_ha(ha, &(s->sin));
      ast_free_ha(ha);
      if (!good) {
         ast_log(LOG_NOTICE, "%s failed to pass IP ACL as '%s'\n", ast_inet_ntoa(s->sin.sin_addr), user);
         return -1;
      }
   }
   if (!strcasecmp(astman_get_header(m, "AuthType"), "MD5")) {
      const char *key = astman_get_header(m, "Key");
      if (!ast_strlen_zero(key) && !ast_strlen_zero(s->challenge)) {
         int x;
         int len = 0;
         char md5key[256] = "";
         struct MD5Context md5;
         unsigned char digest[16];

         MD5Init(&md5);
         MD5Update(&md5, (unsigned char *) s->challenge, strlen(s->challenge));
         MD5Update(&md5, (unsigned char *) password, strlen(password));
         MD5Final(digest, &md5);
         for (x=0; x<16; x++)
            len += sprintf(md5key + len, "%2.2x", digest[x]);
         if (!strcmp(md5key, key))
            error = 0;
      }
   } else if (password) {
      const char *pass = astman_get_header(m, "Secret");
      if (!strcmp(password, pass))
         error = 0;
   }
   if (error) {
      ast_log(LOG_NOTICE, "%s failed to authenticate as '%s'\n", ast_inet_ntoa(s->sin.sin_addr), user);
      return -1;
   }
   ast_copy_string(s->username, user, sizeof(s->username));
   s->readperm = readperm;
   s->writeperm = writeperm;
   set_eventmask(s, astman_get_header(m, "Events"));
   return 0;
}

/*! \brief Manager PING */
static char mandescr_ping[] =
"Description: A 'Ping' action will ellicit a 'Pong' response.  Used to keep the\n"
"  manager connection open.\n"
"Variables: NONE\n";

static int action_ping(struct mansession *s, const struct message *m)
{
   astman_send_response(s, m, "Pong", NULL);
   return 0;
}

static char mandescr_getconfig[] =
"Description: A 'GetConfig' action will dump the contents of a configuration\n"
"file by category and contents.\n"
"Variables:\n"
"   Filename: Configuration filename (e.g. foo.conf)\n";

static int action_getconfig(struct mansession *s, const struct message *m)
{
   struct ast_config *cfg;
   const char *fn = astman_get_header(m, "Filename");
   int catcount = 0;
   int lineno = 0;
   char *category=NULL;
   struct ast_variable *v;

   if (ast_strlen_zero(fn)) {
      astman_send_error(s, m, "Filename not specified");
      return 0;
   }
   if (!(cfg = ast_config_load_with_comments(fn))) {
      astman_send_error(s, m, "Config file not found");
      return 0;
   }
   astman_start_ack(s, m);
   while ((category = ast_category_browse(cfg, category))) {
      lineno = 0;
      astman_append(s, "Category-%06d: %s\r\n", catcount, category);
      for (v = ast_variable_browse(cfg, category); v; v = v->next)
         astman_append(s, "Line-%06d-%06d: %s=%s\r\n", catcount, lineno++, v->name, v->value);
      catcount++;
   }
   ast_config_destroy(cfg);
   astman_append(s, "\r\n");

   return 0;
}

/* helper function for action_updateconfig */
static void handle_updates(struct mansession *s, const struct message *m, struct ast_config *cfg)
{
   int x;
   char hdr[40];
   const char *action, *cat, *var, *value, *match;
   struct ast_category *category;
   struct ast_variable *v;

   for (x=0;x<100000;x++) {
      snprintf(hdr, sizeof(hdr), "Action-%06d", x);
      action = astman_get_header(m, hdr);
      if (ast_strlen_zero(action))
         break;
      snprintf(hdr, sizeof(hdr), "Cat-%06d", x);
      cat = astman_get_header(m, hdr);
      snprintf(hdr, sizeof(hdr), "Var-%06d", x);
      var = astman_get_header(m, hdr);
      snprintf(hdr, sizeof(hdr), "Value-%06d", x);
      value = astman_get_header(m, hdr);
      snprintf(hdr, sizeof(hdr), "Match-%06d", x);
      match = astman_get_header(m, hdr);
      if (!strcasecmp(action, "newcat")) {
         if (!ast_strlen_zero(cat)) {
            category = ast_category_new(cat);
            if (category) {
               ast_category_append(cfg, category);
            }
         }
      } else if (!strcasecmp(action, "renamecat")) {
         if (!ast_strlen_zero(cat) && !ast_strlen_zero(value)) {
            category = ast_category_get(cfg, cat);
            if (category)
               ast_category_rename(category, value);
         }
      } else if (!strcasecmp(action, "delcat")) {
         if (!ast_strlen_zero(cat))
            ast_category_delete(cfg, cat);
      } else if (!strcasecmp(action, "update")) {
         if (!ast_strlen_zero(cat) && !ast_strlen_zero(var) && (category = ast_category_get(cfg, cat)))
            ast_variable_update(category, var, value, match);
      } else if (!strcasecmp(action, "delete")) {
         if (!ast_strlen_zero(cat) && !ast_strlen_zero(var) && (category = ast_category_get(cfg, cat)))
            ast_variable_delete(category, var, match);
      } else if (!strcasecmp(action, "append")) {
         if (!ast_strlen_zero(cat) && !ast_strlen_zero(var) &&
            (category = ast_category_get(cfg, cat)) &&
            (v = ast_variable_new(var, value))){
            if (match && !strcasecmp(match, "object"))
               v->object = 1;
            ast_variable_append(category, v);
         }
      }
   }
}

static char mandescr_updateconfig[] =
"Description: A 'UpdateConfig' action will dump the contents of a configuration\n"
"file by category and contents.\n"
"Variables (X's represent 6 digit number beginning with 000000):\n"
"   SrcFilename:   Configuration filename to read(e.g. foo.conf)\n"
"   DstFilename:   Configuration filename to write(e.g. foo.conf)\n"
"   Reload:        Whether or not a reload should take place (or name of specific module)\n"
"   Action-XXXXXX: Action to Take (NewCat,RenameCat,DelCat,Update,Delete,Append)\n"
"   Cat-XXXXXX:    Category to operate on\n"
"   Var-XXXXXX:    Variable to work on\n"
"   Value-XXXXXX:  Value to work on\n"
"   Match-XXXXXX:  Extra match required to match line\n";

static int action_updateconfig(struct mansession *s, const struct message *m)
{
   struct ast_config *cfg;
   const char *sfn = astman_get_header(m, "SrcFilename");
   const char *dfn = astman_get_header(m, "DstFilename");
   int res;
   const char *rld = astman_get_header(m, "Reload");

   if (ast_strlen_zero(sfn) || ast_strlen_zero(dfn)) {
      astman_send_error(s, m, "Filename not specified");
      return 0;
   }
   if (!(cfg = ast_config_load_with_comments(sfn))) {
      astman_send_error(s, m, "Config file not found");
      return 0;
   }
   handle_updates(s, m, cfg);
   res = config_text_file_save(dfn, cfg, "Manager");
   ast_config_destroy(cfg);
   if (res) {
      astman_send_error(s, m, "Save of config failed");
      return 0;
   }
   astman_send_ack(s, m, NULL);
   if (!ast_strlen_zero(rld)) {
      if (ast_true(rld))
         rld = NULL;
      ast_module_reload(rld);
   }
   return 0;
}

/*! \brief Manager WAITEVENT */
static char mandescr_waitevent[] =
"Description: A 'WaitEvent' action will ellicit a 'Success' response.  Whenever\n"
"a manager event is queued.  Once WaitEvent has been called on an HTTP manager\n"
"session, events will be generated and queued.\n"
"Variables: \n"
"   Timeout: Maximum time (in seconds) to wait for events, -1 means forever.\n";

static int action_waitevent(struct mansession *s, const struct message *m)
{
   const char *timeouts = astman_get_header(m, "Timeout");
   int timeout = -1;
   int x;
   int needexit = 0;
   const char *id = astman_get_header(m,"ActionID");
   char idText[256] = "";

   if (!ast_strlen_zero(id))
      snprintf(idText, sizeof(idText), "ActionID: %s\r\n", id);

   if (!ast_strlen_zero(timeouts)) {
      sscanf(timeouts, "%i", &timeout);
      if (timeout < -1)
         timeout = -1;
      /* XXX maybe put an upper bound, or prevent the use of 0 ? */
   }

   ast_mutex_lock(&s->__lock);
   if (s->waiting_thread != AST_PTHREADT_NULL)
      pthread_kill(s->waiting_thread, SIGURG);

   if (s->managerid) { /* AMI-over-HTTP session */
      /*
       * Make sure the timeout is within the expire time of the session,
       * as the client will likely abort the request if it does not see
       * data coming after some amount of time.
       */
      time_t now = time(NULL);
      int max = s->sessiontimeout - now - 10;

      if (max < 0)   /* We are already late. Strange but possible. */
         max = 0;
      if (timeout < 0 || timeout > max)
         timeout = max;
      if (!s->send_events) /* make sure we record events */
         s->send_events = -1;
   }
   ast_mutex_unlock(&s->__lock);

   /* XXX should this go inside the lock ? */
   s->waiting_thread = pthread_self(); /* let new events wake up this thread */
   if (option_debug)
      ast_log(LOG_DEBUG, "Starting waiting for an event!\n");

   for (x=0; x < timeout || timeout < 0; x++) {
      ast_mutex_lock(&s->__lock);
      if (NEW_EVENT(s))
         needexit = 1;
      /* We can have multiple HTTP session point to the same mansession entry.
       * The way we deal with it is not very nice: newcomers kick out the previous
       * HTTP session. XXX this needs to be improved.
       */
      if (s->waiting_thread != pthread_self())
         needexit = 1;
      if (s->needdestroy)
         needexit = 1;
      ast_mutex_unlock(&s->__lock);
      if (needexit)
         break;
      if (s->managerid == 0) {   /* AMI session */
         if (ast_wait_for_input(s->fd, 1000))
            break;
      } else { /* HTTP session */
         sleep(1);
      }
   }
   if (option_debug)
      ast_log(LOG_DEBUG, "Finished waiting for an event!\n");
   ast_mutex_lock(&s->__lock);
   if (s->waiting_thread == pthread_self()) {
      struct eventqent *eqe;
      astman_send_response(s, m, "Success", "Waiting for Event completed.");
      while ( (eqe = NEW_EVENT(s)) ) {
         ref_event(eqe);
         if (((s->readperm & eqe->category) == eqe->category) &&
             ((s->send_events & eqe->category) == eqe->category)) {
            astman_append(s, "%s", eqe->eventdata);
         }
         s->last_ev = unref_event(s->last_ev);
      }
      astman_append(s,
         "Event: WaitEventComplete\r\n"
         "%s"
         "\r\n", idText);
      s->waiting_thread = AST_PTHREADT_NULL;
   } else {
      if (option_debug)
         ast_log(LOG_DEBUG, "Abandoning event request!\n");
   }
   ast_mutex_unlock(&s->__lock);
   return 0;
}

static char mandescr_listcommands[] =
"Description: Returns the action name and synopsis for every\n"
"  action that is available to the user\n"
"Variables: NONE\n";

/*! \note The actionlock is read-locked by the caller of this function */
static int action_listcommands(struct mansession *s, const struct message *m)
{
   struct manager_action *cur;
   struct ast_str *temp = ast_str_alloca(BUFSIZ); /* XXX very large ? */

   astman_start_ack(s, m);
   for (cur = first_action; cur; cur = cur->next) { /* Walk the list of actions */
      if ((s->writeperm & cur->authority) == cur->authority)
         astman_append(s, "%s: %s (Priv: %s)\r\n",
            cur->action, cur->synopsis, authority_to_str(cur->authority, &temp));
   }
   astman_append(s, "\r\n");

   return 0;
}

static char mandescr_events[] =
"Description: Enable/Disable sending of events to this manager\n"
"  client.\n"
"Variables:\n"
"  EventMask: 'on' if all events should be sent,\n"
"     'off' if no events should be sent,\n"
"     'system,call,log' to select which flags events should have to be sent.\n";

static int action_events(struct mansession *s, const struct message *m)
{
   const char *mask = astman_get_header(m, "EventMask");
   int res;

   res = set_eventmask(s, mask);
   if (res > 0)
      astman_send_response(s, m, "Events On", NULL);
   else if (res == 0)
      astman_send_response(s, m, "Events Off", NULL);

   return 0;
}

static char mandescr_logoff[] =
"Description: Logoff this manager session\n"
"Variables: NONE\n";

static int action_logoff(struct mansession *s, const struct message *m)
{
   astman_send_response(s, m, "Goodbye", "Thanks for all the fish.");
   return -1;
}

static int action_login(struct mansession *s, const struct message *m)
{
   if (authenticate(s, m)) {
      sleep(1);
      astman_send_error(s, m, "Authentication failed");
      return -1;
   }
   s->authenticated = 1;
   if (option_verbose > 1) {
      if (displayconnects) {
         ast_verbose(VERBOSE_PREFIX_2 "%sManager '%s' logged on from %s\n", (s->managerid ? "HTTP " : ""), s->username, ast_inet_ntoa(s->sin.sin_addr));
      }
   }
   ast_log(LOG_EVENT, "%sManager '%s' logged on from %s\n", (s->managerid ? "HTTP " : ""), s->username, ast_inet_ntoa(s->sin.sin_addr));
   astman_send_ack(s, m, "Authentication accepted");
   return 0;
}

static int action_challenge(struct mansession *s, const struct message *m)
{
   const char *authtype = astman_get_header(m, "AuthType");

   if (!strcasecmp(authtype, "MD5")) {
      if (ast_strlen_zero(s->challenge))
         snprintf(s->challenge, sizeof(s->challenge), "%ld", ast_random());
      ast_mutex_lock(&s->__lock);
      astman_start_ack(s, m);
      astman_append(s, "Challenge: %s\r\n\r\n", s->challenge);
      ast_mutex_unlock(&s->__lock);
   } else {
      astman_send_error(s, m, "Must specify AuthType");
   }
   return 0;
}

static char mandescr_hangup[] =
"Description: Hangup a channel\n"
"Variables: \n"
"  Channel: The channel name to be hungup\n";

static int action_hangup(struct mansession *s, const struct message *m)
{
   struct ast_channel *c = NULL;
   const char *name = astman_get_header(m, "Channel");
   if (ast_strlen_zero(name)) {
      astman_send_error(s, m, "No channel specified");
      return 0;
   }
   c = ast_get_channel_by_name_locked(name);
   if (!c) {
      astman_send_error(s, m, "No such channel");
      return 0;
   }
   ast_softhangup(c, AST_SOFTHANGUP_EXPLICIT);
   ast_channel_unlock(c);
   astman_send_ack(s, m, "Channel Hungup");
   return 0;
}

static char mandescr_setvar[] =
"Description: Set a global or local channel variable.\n"
"Variables: (Names marked with * are required)\n"
"  Channel: Channel to set variable for\n"
"  *Variable: Variable name\n"
"  *Value: Value\n";

static int action_setvar(struct mansession *s, const struct message *m)
{
        struct ast_channel *c = NULL;
   const char *name = astman_get_header(m, "Channel");
   const char *varname = astman_get_header(m, "Variable");
   const char *varval = astman_get_header(m, "Value");

   if (ast_strlen_zero(varname)) {
      astman_send_error(s, m, "No variable specified");
      return 0;
   }

   if (ast_strlen_zero(varval)) {
      astman_send_error(s, m, "No value specified");
      return 0;
   }

   if (!ast_strlen_zero(name)) {
      c = ast_get_channel_by_name_locked(name);
      if (!c) {
         astman_send_error(s, m, "No such channel");
         return 0;
      }
   }

   pbx_builtin_setvar_helper(c, varname, varval);

   if (c)
      ast_channel_unlock(c);

   astman_send_ack(s, m, "Variable Set");

   return 0;
}

static char mandescr_getvar[] =
"Description: Get the value of a global or local channel variable.\n"
"Variables: (Names marked with * are required)\n"
"  Channel: Channel to read variable from\n"
"  *Variable: Variable name\n"
"  ActionID: Optional Action id for message matching.\n";

static int action_getvar(struct mansession *s, const struct message *m)
{
   struct ast_channel *c = NULL;
   const char *name = astman_get_header(m, "Channel");
   const char *varname = astman_get_header(m, "Variable");
   char *varval;
   char workspace[1024];

   if (ast_strlen_zero(varname)) {
      astman_send_error(s, m, "No variable specified");
      return 0;
   }

   if (!ast_strlen_zero(name)) {
      c = ast_get_channel_by_name_locked(name);
      if (!c) {
         astman_send_error(s, m, "No such channel");
         return 0;
      }
   }

   if (varname[strlen(varname) - 1] == ')') {
      ast_func_read(c, (char *) varname, workspace, sizeof(workspace));
   } else {
      pbx_retrieve_variable(c, varname, &varval, workspace, sizeof(workspace), NULL);
   }

   if (c)
      ast_channel_unlock(c);
   astman_start_ack(s, m);
   astman_append(s, "Variable: %s\r\nValue: %s\r\n\r\n", varname, varval);

   return 0;
}


/*! \brief Manager "status" command to show channels */
/* Needs documentation... */
static int action_status(struct mansession *s, const struct message *m)
{
   const char *name = astman_get_header(m,"Channel");
   struct ast_channel *c;
   char bridge[256];
   struct timeval now = ast_tvnow();
   long elapsed_seconds = 0;
   int all = ast_strlen_zero(name); /* set if we want all channels */
   const char *id = astman_get_header(m,"ActionID");
   char idText[256] = "";

   if (!ast_strlen_zero(id))
      snprintf(idText, sizeof(idText), "ActionID: %s\r\n", id);

   astman_send_ack(s, m, "Channel status will follow");
   if (all)
      c = ast_channel_walk_locked(NULL);
   else {
      c = ast_get_channel_by_name_locked(name);
      if (!c) {
         astman_send_error(s, m, "No such channel");
         return 0;
      }
   }
   /* if we look by name, we break after the first iteration */
   while (c) {
      if (c->_bridge)
         snprintf(bridge, sizeof(bridge), "Link: %s\r\n", c->_bridge->name);
      else
         bridge[0] = '\0';
      if (c->pbx) {
         if (c->cdr) {
            elapsed_seconds = now.tv_sec - c->cdr->start.tv_sec;
         }
         astman_append(s,
         "Event: Status\r\n"
         "Privilege: Call\r\n"
         "Channel: %s\r\n"
         "CallerIDNum: %s\r\n"
         "CallerIDName: %s\r\n"
         "Account: %s\r\n"
         "State: %s\r\n"
         "Context: %s\r\n"
         "Extension: %s\r\n"
         "Priority: %d\r\n"
         "Seconds: %ld\r\n"
         "%s"
         "Uniqueid: %s\r\n"
         "%s"
         "\r\n",
         c->name,
         S_OR(c->cid.cid_num, "<unknown>"),
         S_OR(c->cid.cid_name, "<unknown>"),
         c->accountcode,
         ast_state2str(c->_state), c->context,
         c->exten, c->priority, (long)elapsed_seconds, bridge, c->uniqueid, idText);
      } else {
         astman_append(s,
         "Event: Status\r\n"
         "Privilege: Call\r\n"
         "Channel: %s\r\n"
         "CallerIDNum: %s\r\n"
         "CallerIDName: %s\r\n"
         "Account: %s\r\n"
         "State: %s\r\n"
         "%s"
         "Uniqueid: %s\r\n"
         "%s"
         "\r\n",
         c->name,
         S_OR(c->cid.cid_num, "<unknown>"),
         S_OR(c->cid.cid_name, "<unknown>"),
         c->accountcode,
         ast_state2str(c->_state), bridge, c->uniqueid, idText);
      }
      ast_channel_unlock(c);
      if (!all)
         break;
      c = ast_channel_walk_locked(c);
   }
   astman_append(s,
   "Event: StatusComplete\r\n"
   "%s"
   "\r\n",idText);
   return 0;
}

static char mandescr_sendtext[] =
"Description: Sends A Text Message while in a call.\n"
"Variables: (Names marked with * are required)\n"
"       *Channel: Channel to send message to\n"
"       *Message: Message to send\n"
"       ActionID: Optional Action id for message matching.\n";

static int action_sendtext(struct mansession *s, const struct message *m)
{
   struct ast_channel *c = NULL;
   const char *name = astman_get_header(m, "Channel");
   const char *textmsg = astman_get_header(m, "Message");
   int res = 0;

   if (ast_strlen_zero(name)) {
      astman_send_error(s, m, "No channel specified");
      return 0;
   }

   if (ast_strlen_zero(textmsg)) {
      astman_send_error(s, m, "No Message specified");
      return 0;
   }

   c = ast_get_channel_by_name_locked(name);
   if (!c) {
      astman_send_error(s, m, "No such channel");
      return 0;
   }

   res = ast_sendtext(c, textmsg);
   ast_mutex_unlock(&c->lock);
   
   if (res > 0)
      astman_send_ack(s, m, "Success");
   else
      astman_send_error(s, m, "Failure");
   
   return res;
}

static char mandescr_redirect[] =
"Description: Redirect (transfer) a call.\n"
"Variables: (Names marked with * are required)\n"
"  *Channel: Channel to redirect\n"
"  ExtraChannel: Second call leg to transfer (optional)\n"
"  *Exten: Extension to transfer to\n"
"  *Context: Context to transfer to\n"
"  *Priority: Priority to transfer to\n"
"  ActionID: Optional Action id for message matching.\n";

/*! \brief  action_redirect: The redirect manager command */
static int action_redirect(struct mansession *s, const struct message *m)
{
   const char *name = astman_get_header(m, "Channel");
   const char *name2 = astman_get_header(m, "ExtraChannel");
   const char *exten = astman_get_header(m, "Exten");
   const char *context = astman_get_header(m, "Context");
   const char *priority = astman_get_header(m, "Priority");
   struct ast_channel *chan, *chan2 = NULL;
   int pi = 0;
   int res;

   if (ast_strlen_zero(name)) {
      astman_send_error(s, m, "Channel not specified");
      return 0;
   }
   if (!ast_strlen_zero(priority) && (sscanf(priority, "%d", &pi) != 1)) {
      if ((pi = ast_findlabel_extension(NULL, context, exten, priority, NULL)) < 1) {
         astman_send_error(s, m, "Invalid priority\n");
         return 0;
      }
   }
   /* XXX watch out, possible deadlock - we are trying to get two channels!!! */
   chan = ast_get_channel_by_name_locked(name);
   if (!chan) {
      char buf[BUFSIZ];
      snprintf(buf, sizeof(buf), "Channel does not exist: %s", name);
      astman_send_error(s, m, buf);
      return 0;
   }
   if (!ast_strlen_zero(name2))
      chan2 = ast_get_channel_by_name_locked(name2);
   res = ast_async_goto(chan, context, exten, pi);
   if (!res) {
      if (!ast_strlen_zero(name2)) {
         if (chan2)
            res = ast_async_goto(chan2, context, exten, pi);
         else
            res = -1;
         if (!res)
            astman_send_ack(s, m, "Dual Redirect successful");
         else
            astman_send_error(s, m, "Secondary redirect failed");
      } else
         astman_send_ack(s, m, "Redirect successful");
   } else
      astman_send_error(s, m, "Redirect failed");
   if (chan)
      ast_channel_unlock(chan);
   if (chan2)
      ast_channel_unlock(chan2);
   return 0;
}

static char mandescr_command[] =
"Description: Run a CLI command.\n"
"Variables: (Names marked with * are required)\n"
"  *Command: Asterisk CLI command to run\n"
"  ActionID: Optional Action id for message matching.\n";

/*! \brief  Manager command "command" - execute CLI command */
static int action_command(struct mansession *s, const struct message *m)
{
   const char *cmd = astman_get_header(m, "Command");
   const char *id = astman_get_header(m, "ActionID");
   char *buf;
   char template[] = "/tmp/ast-ami-XXXXXX";  /* template for temporary file */
   int fd = mkstemp(template);
   off_t l;

   astman_append(s, "Response: Follows\r\nPrivilege: Command\r\n");
   if (!ast_strlen_zero(id))
      astman_append(s, "ActionID: %s\r\n", id);
   /* FIXME: Wedge a ActionID response in here, waiting for later changes */
   ast_cli_command(fd, cmd);  /* XXX need to change this to use a FILE * */
   l = lseek(fd, 0, SEEK_END);   /* how many chars available */
   buf = alloca(l+1);
   lseek(fd, 0, SEEK_SET);
   read(fd, buf, l);
   buf[l] = '\0';
   close(fd);
   unlink(template);
   astman_append(s, buf);
   astman_append(s, "--END COMMAND--\r\n\r\n");
   return 0;
}

/* helper function for originate */
struct fast_originate_helper {
   char tech[AST_MAX_EXTENSION];
   char data[AST_MAX_EXTENSION];
   int timeout;
   char app[AST_MAX_APP];
   char appdata[AST_MAX_EXTENSION];
   char cid_name[AST_MAX_EXTENSION];
   char cid_num[AST_MAX_EXTENSION];
   char context[AST_MAX_CONTEXT];
   char exten[AST_MAX_EXTENSION];
   char idtext[AST_MAX_EXTENSION];
   char account[AST_MAX_ACCOUNT_CODE];
   int priority;
   struct ast_variable *vars;
};

static void *fast_originate(void *data)
{
   struct fast_originate_helper *in = data;
   int res;
   int reason = 0;
   struct ast_channel *chan = NULL;
   char requested_channel[AST_CHANNEL_NAME];

   if (!ast_strlen_zero(in->app)) {
      res = ast_pbx_outgoing_app(in->tech, AST_FORMAT_SLINEAR, in->data, in->timeout, in->app, in->appdata, &reason, 1,
         S_OR(in->cid_num, NULL),
         S_OR(in->cid_name, NULL),
         in->vars, in->account, &chan);
   } else {
      res = ast_pbx_outgoing_exten(in->tech, AST_FORMAT_SLINEAR, in->data, in->timeout, in->context, in->exten, in->priority, &reason, 1,
         S_OR(in->cid_num, NULL),
         S_OR(in->cid_name, NULL),
         in->vars, in->account, &chan);
   }

   if (!chan)
      snprintf(requested_channel, AST_CHANNEL_NAME, "%s/%s", in->tech, in->data);   
   /* Tell the manager what happened with the channel */
   manager_event(EVENT_FLAG_CALL, "OriginateResponse",
      "%s"
      "Response: %s\r\n"
      "Channel: %s\r\n"
      "Context: %s\r\n"
      "Exten: %s\r\n"
      "Reason: %d\r\n"
      "Uniqueid: %s\r\n"
      "CallerIDNum: %s\r\n"
      "CallerIDName: %s\r\n",
      in->idtext, res ? "Failure" : "Success", chan ? chan->name : requested_channel, in->context, in->exten, reason, 
      chan ? chan->uniqueid : "<null>",
      S_OR(in->cid_num, "<unknown>"),
      S_OR(in->cid_name, "<unknown>")
      );

   /* Locked by ast_pbx_outgoing_exten or ast_pbx_outgoing_app */
   if (chan)
      ast_channel_unlock(chan);
   free(in);
   return NULL;
}

static char mandescr_originate[] =
"Description: Generates an outgoing call to a Extension/Context/Priority or\n"
"  Application/Data\n"
"Variables: (Names marked with * are required)\n"
"  *Channel: Channel name to call\n"
"  Exten: Extension to use (requires 'Context' and 'Priority')\n"
"  Context: Context to use (requires 'Exten' and 'Priority')\n"
"  Priority: Priority to use (requires 'Exten' and 'Context')\n"
"  Application: Application to use\n"
"  Data: Data to use (requires 'Application')\n"
"  Timeout: How long to wait for call to be answered (in ms)\n"
"  CallerID: Caller ID to be set on the outgoing channel\n"
"  Variable: Channel variable to set, multiple Variable: headers are allowed\n"
"  Account: Account code\n"
"  Async: Set to 'true' for fast origination\n";

static int action_originate(struct mansession *s, const struct message *m)
{
   const char *name = astman_get_header(m, "Channel");
   const char *exten = astman_get_header(m, "Exten");
   const char *context = astman_get_header(m, "Context");
   const char *priority = astman_get_header(m, "Priority");
   const char *timeout = astman_get_header(m, "Timeout");
   const char *callerid = astman_get_header(m, "CallerID");
   const char *account = astman_get_header(m, "Account");
   const char *app = astman_get_header(m, "Application");
   const char *appdata = astman_get_header(m, "Data");
   const char *async = astman_get_header(m, "Async");
   const char *id = astman_get_header(m, "ActionID");
   struct ast_variable *vars = astman_get_variables(m);
   char *tech, *data;
   char *l = NULL, *n = NULL;
   int pi = 0;
   int res;
   int to = 30000;
   int reason = 0;
   char tmp[256];
   char tmp2[256];

   pthread_t th;
   pthread_attr_t attr;
   if (!name) {
      astman_send_error(s, m, "Channel not specified");
      return 0;
   }
   if (!ast_strlen_zero(priority) && (sscanf(priority, "%d", &pi) != 1)) {
      if ((pi = ast_findlabel_extension(NULL, context, exten, priority, NULL)) < 1) {
         astman_send_error(s, m, "Invalid priority\n");
         return 0;
      }
   }
   if (!ast_strlen_zero(timeout) && (sscanf(timeout, "%d", &to) != 1)) {
      astman_send_error(s, m, "Invalid timeout\n");
      return 0;
   }
   ast_copy_string(tmp, name, sizeof(tmp));
   tech = tmp;
   data = strchr(tmp, '/');
   if (!data) {
      astman_send_error(s, m, "Invalid channel\n");
      return 0;
   }
   *data++ = '\0';
   ast_copy_string(tmp2, callerid, sizeof(tmp2));
   ast_callerid_parse(tmp2, &n, &l);
   if (n) {
      if (ast_strlen_zero(n))
         n = NULL;
   }
   if (l) {
      ast_shrink_phone_number(l);
      if (ast_strlen_zero(l))
         l = NULL;
   }
   if (ast_true(async)) {
      struct fast_originate_helper *fast = ast_calloc(1, sizeof(*fast));
      if (!fast) {
         res = -1;
      } else {
         if (!ast_strlen_zero(id))
            snprintf(fast->idtext, sizeof(fast->idtext), "ActionID: %s\r\n", id);
         ast_copy_string(fast->tech, tech, sizeof(fast->tech));
            ast_copy_string(fast->data, data, sizeof(fast->data));
         ast_copy_string(fast->app, app, sizeof(fast->app));
         ast_copy_string(fast->appdata, appdata, sizeof(fast->appdata));
         if (l)
            ast_copy_string(fast->cid_num, l, sizeof(fast->cid_num));
         if (n)
            ast_copy_string(fast->cid_name, n, sizeof(fast->cid_name));
         fast->vars = vars;
         ast_copy_string(fast->context, context, sizeof(fast->context));
         ast_copy_string(fast->exten, exten, sizeof(fast->exten));
         ast_copy_string(fast->account, account, sizeof(fast->account));
         fast->timeout = to;
         fast->priority = pi;
         pthread_attr_init(&attr);
         pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
         if (ast_pthread_create(&th, &attr, fast_originate, fast)) {
            res = -1;
         } else {
            res = 0;
         }
         pthread_attr_destroy(&attr);
      }
   } else if (!ast_strlen_zero(app)) {
         res = ast_pbx_outgoing_app(tech, AST_FORMAT_SLINEAR, data, to, app, appdata, &reason, 1, l, n, vars, account, NULL);
      } else {
      if (exten && context && pi)
            res = ast_pbx_outgoing_exten(tech, AST_FORMAT_SLINEAR, data, to, context, exten, pi, &reason, 1, l, n, vars, account, NULL);
      else {
         astman_send_error(s, m, "Originate with 'Exten' requires 'Context' and 'Priority'");
         return 0;
      }
   }
   if (!res)
      astman_send_ack(s, m, "Originate successfully queued");
   else
      astman_send_error(s, m, "Originate failed");
   return 0;
}

/*! \brief Help text for manager command mailboxstatus
 */
static char mandescr_mailboxstatus[] =
"Description: Checks a voicemail account for status.\n"
"Variables: (Names marked with * are required)\n"
"  *Mailbox: Full mailbox ID <mailbox>@<vm-context>\n"
"  ActionID: Optional ActionID for message matching.\n"
"Returns number of messages.\n"
"  Message: Mailbox Status\n"
"  Mailbox: <mailboxid>\n"
"  Waiting: <count>\n"
"\n";

static int action_mailboxstatus(struct mansession *s, const struct message *m)
{
   const char *mailbox = astman_get_header(m, "Mailbox");
   int ret;

   if (ast_strlen_zero(mailbox)) {
      astman_send_error(s, m, "Mailbox not specified");
      return 0;
   }
   ret = ast_app_has_voicemail(mailbox, NULL);
   astman_start_ack(s, m);
   astman_append(s, "Message: Mailbox Status\r\n"
          "Mailbox: %s\r\n"
          "Waiting: %d\r\n\r\n", mailbox, ret);
   return 0;
}

static char mandescr_mailboxcount[] =
"Description: Checks a voicemail account for new messages.\n"
"Variables: (Names marked with * are required)\n"
"  *Mailbox: Full mailbox ID <mailbox>@<vm-context>\n"
"  ActionID: Optional ActionID for message matching.\n"
"Returns number of new and old messages.\n"
"  Message: Mailbox Message Count\n"
"  Mailbox: <mailboxid>\n"
"  NewMessages: <count>\n"
"  OldMessages: <count>\n"
"\n";
static int action_mailboxcount(struct mansession *s, const struct message *m)
{
   const char *mailbox = astman_get_header(m, "Mailbox");
   int newmsgs = 0, oldmsgs = 0;

   if (ast_strlen_zero(mailbox)) {
      astman_send_error(s, m, "Mailbox not specified");
      return 0;
   }
   ast_app_inboxcount(mailbox, &newmsgs, &oldmsgs);
   astman_start_ack(s, m);
   astman_append(s,   "Message: Mailbox Message Count\r\n"
            "Mailbox: %s\r\n"
            "NewMessages: %d\r\n"
            "OldMessages: %d\r\n"
            "\r\n",
            mailbox, newmsgs, oldmsgs);
   return 0;
}

static char mandescr_extensionstate[] =
"Description: Report the extension state for given extension.\n"
"  If the extension has a hint, will use devicestate to check\n"
"  the status of the device connected to the extension.\n"
"Variables: (Names marked with * are required)\n"
"  *Exten: Extension to check state on\n"
"  *Context: Context for extension\n"
"  ActionId: Optional ID for this transaction\n"
"Will return an \"Extension Status\" message.\n"
"The response will include the hint for the extension and the status.\n";

static int action_extensionstate(struct mansession *s, const struct message *m)
{
   const char *exten = astman_get_header(m, "Exten");
   const char *context = astman_get_header(m, "Context");
   char hint[256] = "";
   int status;
   if (ast_strlen_zero(exten)) {
      astman_send_error(s, m, "Extension not specified");
      return 0;
   }
   if (ast_strlen_zero(context))
      context = "default";
   status = ast_extension_state(NULL, context, exten);
   ast_get_hint(hint, sizeof(hint) - 1, NULL, 0, NULL, context, exten);
   astman_start_ack(s, m);
   astman_append(s,   "Message: Extension Status\r\n"
            "Exten: %s\r\n"
            "Context: %s\r\n"
            "Hint: %s\r\n"
            "Status: %d\r\n\r\n",
            exten, context, hint, status);
   return 0;
}

static char mandescr_timeout[] =
"Description: Hangup a channel after a certain time.\n"
"Variables: (Names marked with * are required)\n"
"  *Channel: Channel name to hangup\n"
"  *Timeout: Maximum duration of the call (sec)\n"
"Acknowledges set time with 'Timeout Set' message\n";

static int action_timeout(struct mansession *s, const struct message *m)
{
   struct ast_channel *c;
   const char *name = astman_get_header(m, "Channel");
   int timeout = atoi(astman_get_header(m, "Timeout"));

   if (ast_strlen_zero(name)) {
      astman_send_error(s, m, "No channel specified");
      return 0;
   }
   if (!timeout) {
      astman_send_error(s, m, "No timeout specified");
      return 0;
   }
   c = ast_get_channel_by_name_locked(name);
   if (!c) {
      astman_send_error(s, m, "No such channel");
      return 0;
   }
   ast_channel_setwhentohangup(c, timeout);
   ast_channel_unlock(c);
   astman_send_ack(s, m, "Timeout Set");
   return 0;
}

/*!
 * Send any applicable events to the client listening on this socket.
 * Wait only for a finite time on each event, and drop all events whether
 * they are successfully sent or not.
 */
static int process_events(struct mansession *s)
{
   int ret = 0;

   ast_mutex_lock(&s->__lock);
   if (s->f != NULL) {
      struct eventqent *eqe;

      while ( (eqe = NEW_EVENT(s)) ) {
         ref_event(eqe);
         if (!ret && s->authenticated &&
             (s->readperm & eqe->category) == eqe->category &&
             (s->send_events & eqe->category) == eqe->category) {
            if (send_string(s, eqe->eventdata) < 0)
               ret = -1;   /* don't send more */
         }
         s->last_ev = unref_event(s->last_ev);
      }
   }
   ast_mutex_unlock(&s->__lock);
   return ret;
}

static char mandescr_userevent[] =
"Description: Send an event to manager sessions.\n"
"Variables: (Names marked with * are required)\n"
"       *UserEvent: EventStringToSend\n"
"       Header1: Content1\n"
"       HeaderN: ContentN\n";

static int action_userevent(struct mansession *s, const struct message *m)
{
   const char *event = astman_get_header(m, "UserEvent");
   char body[2048] = "";
   int x, bodylen = 0;
   for (x = 0; x < m->hdrcount; x++) {
      if (strncasecmp("UserEvent:", m->headers[x], strlen("UserEvent:"))) {
         ast_copy_string(body + bodylen, m->headers[x], sizeof(body) - bodylen - 3);
         bodylen += strlen(m->headers[x]);
         ast_copy_string(body + bodylen, "\r\n", 3);
         bodylen += 2;
      }
   }

   manager_event(EVENT_FLAG_USER, "UserEvent", "UserEvent: %s\r\n%s", event, body);
   return 0;
}

/*
 * Done with the action handlers here, we start with the code in charge
 * of accepting connections and serving them.
 * accept_thread() forks a new thread for each connection, session_do(),
 * which in turn calls get_input() repeatedly until a full message has
 * been accumulated, and then invokes process_message() to pass it to
 * the appropriate handler.
 */

/*
 * Process an AMI message, performing desired action.
 * Return 0 on success, -1 on error that require the session to be destroyed.
 */
static int process_message(struct mansession *s, const struct message *m)
{
   char action[80] = "";
   int ret = 0;
   struct manager_action *tmp;

   ast_copy_string(action, astman_get_header(m, "Action"), sizeof(action));
   if (option_debug)
      ast_log(LOG_DEBUG, "Manager received command '%s'\n", action);

   if (ast_strlen_zero(action)) {
      astman_send_error(s, m, "Missing action in request");
      return 0;
   }

   if (!s->authenticated && strcasecmp(action, "Login") && strcasecmp(action, "Logoff") && strcasecmp(action, "Challenge")) {
      ast_mutex_lock(&s->__lock);
      astman_send_error(s, m, "Permission denied");
      ast_mutex_unlock(&s->__lock);
      return 0;
   }
   ast_rwlock_rdlock(&actionlock);  
   for (tmp = first_action ; tmp; tmp = tmp->next) {
      if (strcasecmp(action, tmp->action))
         continue;
      if ((s->writeperm & tmp->authority) == tmp->authority) {
         if (tmp->func(s, m)) {  /* error */
            return -1;
         }
      } else
         astman_send_error(s, m, "Permission denied");
      break;
   }
   ast_rwlock_unlock(&actionlock);
   if (!tmp) {
      ast_mutex_lock(&s->__lock);
      astman_send_error(s, m, "Invalid/unknown command. Use Action: ListCommands to show available commands.");
      ast_mutex_unlock(&s->__lock);
   }
   if (ret)
      return ret;
   /* Once done with our message, deliver any pending events */
   return process_events(s);
}

/*!
 * Read one full line (including crlf) from the manager socket.
 * \r\n is the only valid terminator for the line.
 * (Note that, later, '\0' will be considered as the end-of-line marker,
 * so everything between the '\0' and the '\r\n' will not be used).
 * Also note that we assume output to have at least "maxlen" space.
 */
static int get_input(struct mansession *s, char *output)
{
   int res, x;
   int maxlen = sizeof(s->inbuf) - 1;
   char *src = s->inbuf;

   /*
    * Look for \r\n within the buffer. If found, copy to the output
    * buffer and return, trimming the \r\n (not used afterwards).
    */
   for (x = 0; x < s->inlen; x++) {
      int cr;  /* set if we have \r */
      if (src[x] == '\r' && x+1 < s->inlen && src[x+1] == '\n')
         cr = 2;  /* Found. Update length to include \r\n */
      else if (src[x] == '\n')
         cr = 1;  /* also accept \n only */
      else
         continue;
      memmove(output, src, x);   /*... but trim \r\n */
      output[x] = '\0';    /* terminate the string */
      x += cr;       /* number of bytes used */
      s->inlen -= x;       /* remaining size */
      memmove(src, src + x, s->inlen); /* remove used bytes */
      return 1;
   }
   if (s->inlen >= maxlen) {
      /* no crlf found, and buffer full - sorry, too long for us */
      ast_log(LOG_WARNING, "Dumping long line with no return from %s: %s\n", ast_inet_ntoa(s->sin.sin_addr), src);
      s->inlen = 0;
   }
   res = 0;
   while (res == 0) {
      /* XXX do we really need this locking ? */
      ast_mutex_lock(&s->__lock);
      s->waiting_thread = pthread_self();
      ast_mutex_unlock(&s->__lock);

      res = ast_wait_for_input(s->fd, -1);   /* return 0 on timeout ? */

      ast_mutex_lock(&s->__lock);
      s->waiting_thread = AST_PTHREADT_NULL;
      ast_mutex_unlock(&s->__lock);
   }
   if (res < 0) {
      /* If we get a signal from some other thread (typically because
       * there are new events queued), return 0 to notify the caller.
       */
      if (errno == EINTR)
         return 0;
      ast_log(LOG_WARNING, "poll() returned error: %s\n", strerror(errno));
      return -1;
   }
   ast_mutex_lock(&s->__lock);
   res = fread(src + s->inlen, 1, maxlen - s->inlen, s->f);
   if (res < 1)
      res = -1;   /* error return */
   else {
      s->inlen += res;
      src[s->inlen] = '\0';
      res = 0;
   }
   ast_mutex_unlock(&s->__lock);
   return res;
}

static int do_message(struct mansession *s)
{
   struct message m = { 0 };
   char header_buf[sizeof(s->inbuf)] = { '\0' };
   int res;

   for (;;) {
      /* Check if any events are pending and do them if needed */
      if (process_events(s))
         return -1;
      res = get_input(s, header_buf);
      if (res == 0) {
         continue;
      } else if (res > 0) {
         if (ast_strlen_zero(header_buf))
            return process_message(s, &m) ? -1 : 0;
         else if (m.hdrcount < (AST_MAX_MANHEADERS - 1))
            m.headers[m.hdrcount++] = ast_strdupa(header_buf);
      } else {
         return res;
      }
   }
}

/*! \brief The body of the individual manager session.
 * Call get_input() to read one line at a time
 * (or be woken up on new events), collect the lines in a
 * message until found an empty line, and execute the request.
 * In any case, deliver events asynchronously through process_events()
 * (called from here if no line is available, or at the end of
 * process_message(). )
 */
static void *session_do(void *data)
{
   struct server_instance *ser = data;
   struct mansession *s = ast_calloc(1, sizeof(*s));
   int flags;
   int res;

   if (s == NULL)
      goto done;

   s->writetimeout = 100;
   s->waiting_thread = AST_PTHREADT_NULL;

   flags = fcntl(ser->fd, F_GETFL);
   if (!block_sockets) /* make sure socket is non-blocking */
      flags |= O_NONBLOCK;
   else
      flags &= ~O_NONBLOCK;
   fcntl(ser->fd, F_SETFL, flags);

   ast_mutex_init(&s->__lock);
   s->send_events = -1;
   /* these fields duplicate those in the 'ser' structure */
   s->fd = ser->fd;
   s->f = ser->f;
   s->sin = ser->requestor;

   ast_atomic_fetchadd_int(&num_sessions, 1);
   AST_LIST_LOCK(&sessions);
   AST_LIST_INSERT_HEAD(&sessions, s, list);
   AST_LIST_UNLOCK(&sessions);
   /* Hook to the tail of the event queue */
   s->last_ev = grab_last();
   s->f = ser->f;
   astman_append(s, "Asterisk Call Manager/1.0\r\n"); /* welcome prompt */
   for (;;) {
      if ((res = do_message(s)) < 0)
         break;
   }
   /* session is over, explain why and terminate */
   if (s->authenticated) {
      if (option_verbose > 1) {
         if (displayconnects)
            ast_verbose(VERBOSE_PREFIX_2 "Manager '%s' logged off from %s\n", s->username, ast_inet_ntoa(s->sin.sin_addr));
      }
      ast_log(LOG_EVENT, "Manager '%s' logged off from %s\n", s->username, ast_inet_ntoa(s->sin.sin_addr));
   } else {
      if (option_verbose > 1) {
         if (displayconnects)
            ast_verbose(VERBOSE_PREFIX_2 "Connect attempt from '%s' unable to authenticate\n", ast_inet_ntoa(s->sin.sin_addr));
      }
      ast_log(LOG_EVENT, "Failed attempt from %s\n", ast_inet_ntoa(s->sin.sin_addr));
   }
   destroy_session(s);

done:
   free(ser);
   return NULL;
}

/*! \brief remove at most n_max stale session from the list. */
static void purge_sessions(int n_max)
{
   struct mansession *s;
   time_t now = time(NULL);

   AST_LIST_LOCK(&sessions);
   AST_LIST_TRAVERSE_SAFE_BEGIN(&sessions, s, list) {
      if (s->sessiontimeout && (now > s->sessiontimeout) && !s->inuse) {
         AST_LIST_REMOVE_CURRENT(&sessions, list);
         ast_atomic_fetchadd_int(&num_sessions, -1);
         if (s->authenticated && (option_verbose > 1) && displayconnects) {
            ast_verbose(VERBOSE_PREFIX_2 "HTTP Manager '%s' timed out from %s\n",
               s->username, ast_inet_ntoa(s->sin.sin_addr));
         }
         free_session(s);  /* XXX outside ? */
         if (--n_max <= 0)
            break;
      }
   }
   AST_LIST_TRAVERSE_SAFE_END
   AST_LIST_UNLOCK(&sessions);
}

/*
 * events are appended to a queue from where they
 * can be dispatched to clients.
 */
static int append_event(const char *str, int category)
{
   struct eventqent *tmp = ast_malloc(sizeof(*tmp) + strlen(str));
   static int seq;   /* sequence number */

   if (!tmp)
      return -1;

   /* need to init all fields, because ast_malloc() does not */
   tmp->usecount = 0;
   tmp->category = category;
   tmp->seq = ast_atomic_fetchadd_int(&seq, 1);
   AST_LIST_NEXT(tmp, eq_next) = NULL;
   strcpy(tmp->eventdata, str);

   AST_LIST_LOCK(&all_events);
   AST_LIST_INSERT_TAIL(&all_events, tmp, eq_next);
   AST_LIST_UNLOCK(&all_events);

   return 0;
}

/* XXX see if can be moved inside the function */
AST_THREADSTORAGE(manager_event_buf);
#define MANAGER_EVENT_BUF_INITSIZE   256

/*! \brief  manager_event: Send AMI event to client */
int __manager_event(int category, const char *event,
   const char *file, int line, const char *func, const char *fmt, ...)
{
   struct mansession *s;
   struct manager_custom_hook *hook;
   struct ast_str *auth = ast_str_alloca(80);
   const char *cat_str;
   va_list ap;
   struct timeval now;
   struct ast_str *buf;

   /* Abort if there aren't any manager sessions */
   if (!num_sessions)
      return 0;

   if (!(buf = ast_str_thread_get(&manager_event_buf, MANAGER_EVENT_BUF_INITSIZE)))
      return -1;

   cat_str = authority_to_str(category, &auth);
   ast_str_set(&buf, 0,
         "Event: %s\r\nPrivilege: %s\r\n",
          event, cat_str);

   if (timestampevents) {
      now = ast_tvnow();
      ast_str_append(&buf, 0,
            "Timestamp: %ld.%06lu\r\n",
             now.tv_sec, (unsigned long) now.tv_usec);
   }
   if (manager_debug) {
      static int seq;
      ast_str_append(&buf, 0,
            "SequenceNumber: %d\r\n",
             ast_atomic_fetchadd_int(&seq, 1));
      ast_str_append(&buf, 0,
            "File: %s\r\nLine: %d\r\nFunc: %s\r\n", file, line, func);
   }

   va_start(ap, fmt);
   ast_str_append_va(&buf, 0, fmt, ap);
   va_end(ap);

   ast_str_append(&buf, 0, "\r\n");

   append_event(buf->str, category);

   /* Wake up any sleeping sessions */
   AST_LIST_LOCK(&sessions);
   AST_LIST_TRAVERSE(&sessions, s, list) {
      ast_mutex_lock(&s->__lock);
      if (s->waiting_thread != AST_PTHREADT_NULL)
         pthread_kill(s->waiting_thread, SIGURG);
      ast_mutex_unlock(&s->__lock);
   }
   AST_LIST_UNLOCK(&sessions);

   AST_RWLIST_RDLOCK(&manager_hooks);
   if (!AST_RWLIST_EMPTY(&manager_hooks)) {
      AST_RWLIST_TRAVERSE(&manager_hooks, hook, list) {
         hook->helper(category, event, buf->str);
      }
   }
   AST_RWLIST_UNLOCK(&manager_hooks);

   return 0;
}

/*
 * support functions to register/unregister AMI action handlers,
 */
int ast_manager_unregister(char *action)
{
   struct manager_action *cur, *prev;

   ast_rwlock_wrlock(&actionlock);
   for (cur = first_action, prev = NULL; cur; prev = cur, cur = cur->next) {
      if (!strcasecmp(action, cur->action)) {
         if (prev)
            prev->next = cur->next;
         else
            first_action = cur->next;
         free(cur);
         if (option_verbose > 1)
            ast_verbose(VERBOSE_PREFIX_2 "Manager unregistered action %s\n", action);
         break;
      }
   }
   ast_rwlock_unlock(&actionlock);
   return 0;
}

static int manager_state_cb(char *context, char *exten, int state, void *data)
{
   /* Notify managers of change */
   manager_event(EVENT_FLAG_CALL, "ExtensionStatus", "Exten: %s\r\nContext: %s\r\nStatus: %d\r\n", exten, context, state);
   return 0;
}

static int ast_manager_register_struct(struct manager_action *act)
{
   struct manager_action *cur, *prev = NULL;
   int ret;

   ast_rwlock_wrlock(&actionlock);
   for (cur = first_action; cur; prev = cur, cur = cur->next) {
      ret = strcasecmp(cur->action, act->action);
      if (ret == 0) {
         ast_log(LOG_WARNING, "Manager: Action '%s' already registered\n", act->action);
         ast_rwlock_unlock(&actionlock);
         return -1;
      }
      if (ret > 0)   /* Insert these alphabetically */
         break;
   }
   if (prev)
      prev->next = act;
   else
      first_action = act;
   act->next = cur;

   if (option_verbose > 1)
      ast_verbose(VERBOSE_PREFIX_2 "Manager registered action %s\n", act->action);
   ast_rwlock_unlock(&actionlock);
   return 0;
}

/*! \brief register a new command with manager, including online help. This is
   the preferred way to register a manager command */
int ast_manager_register2(const char *action, int auth, int (*func)(struct mansession *s, const struct message *m), const char *synopsis, const char *description)
{
   struct manager_action *cur;

   cur = ast_malloc(sizeof(*cur));
   if (!cur)
      return -1;

   cur->action = action;
   cur->authority = auth;
   cur->func = func;
   cur->synopsis = synopsis;
   cur->description = description;
   cur->next = NULL;

   ast_manager_register_struct(cur);

   return 0;
}
/*! @}
 END Doxygen group */

/*
 * The following are support functions for AMI-over-http.
 * The common entry point is generic_http_callback(),
 * which extracts HTTP header and URI fields and reformats
 * them into AMI messages, locates a proper session
 * (using the mansession_id Cookie or GET variable),
 * and calls process_message() as for regular AMI clients.
 * When done, the output (which goes to a temporary file)
 * is read back into a buffer and reformatted as desired,
 * then fed back to the client over the original socket.
 */

enum output_format {
   FORMAT_RAW,
   FORMAT_HTML,
   FORMAT_XML,
};

static char *contenttype[] = {
   [FORMAT_RAW] = "plain",
   [FORMAT_HTML] = "html",
   [FORMAT_XML] =  "xml",
};

/*!
 * locate an http session in the list. The search key (ident) is
 * the value of the mansession_id cookie (0 is not valid and means
 * a session on the AMI socket).
 */
static struct mansession *find_session(unsigned long ident)
{
   struct mansession *s;

   if (ident == 0)
      return NULL;

   AST_LIST_LOCK(&sessions);
   AST_LIST_TRAVERSE(&sessions, s, list) {
      ast_mutex_lock(&s->__lock);
      if (s->managerid == ident && !s->needdestroy) {
         ast_atomic_fetchadd_int(&s->inuse, 1);
         break;
      }
      ast_mutex_unlock(&s->__lock);
   }
   AST_LIST_UNLOCK(&sessions);

   return s;
}

/*
 * convert to xml with various conversion:
 * mode & 1 -> lowercase;
 * mode & 2 -> replace non-alphanumeric chars with underscore
 */
static void xml_copy_escape(struct ast_str **out, const char *src, int mode)
{
   /* store in a local buffer to avoid calling ast_str_append too often */
   char buf[256];
   char *dst = buf;
   int space = sizeof(buf);
   /* repeat until done and nothing to flush */
   for ( ; *src || dst != buf ; src++) {
      if (*src == '\0' || space < 10) {   /* flush */
         *dst++ = '\0';
         ast_str_append(out, 0, "%s", buf);
         dst = buf;
         space = sizeof(buf);
         if (*src == '\0')
            break;
      }
         
      if ( (mode & 2) && !isalnum(*src)) {
         *dst++ = '_';
         space--;
         continue;
      }
      switch (*src) {
      case '<':
         strcpy(dst, "&lt;");
         dst += 4;
         space -= 4;
         break;
      case '>':
         strcpy(dst, "&gt;");
         dst += 4;
         space -= 4;
         break;
      case '\"':
         strcpy(dst, "&quot;");
         dst += 6;
         space -= 6;
         break;
      case '\'':
         strcpy(dst, "&apos;");
         dst += 6;
         space -= 6;
         break;
      case '&':
         strcpy(dst, "&amp;");
         dst += 5;
         space -= 5;
         break;

      default:
         *dst++ = mode ? tolower(*src) : *src;
         space--;
      }
   }
}

/*! \brief Convert the input into XML or HTML.
 * The input is supposed to be a sequence of lines of the form
 * Name: value
 * optionally followed by a blob of unformatted text.
 * A blank line is a section separator. Basically, this is a
 * mixture of the format of Manager Interface and CLI commands.
 * The unformatted text is considered as a single value of a field
 * named 'Opaque-data'.
 *
 * At the moment the output format is the following (but it may
 * change depending on future requirements so don't count too
 * much on it when writing applications):
 *
 * General: the unformatted text is used as a value of
 * XML output:  to be completed
 *   Each section is within <response type="object" id="xxx">
 *   where xxx is taken from ajaxdest variable or defaults to unknown
 *   Each row is reported as an attribute Name="value" of an XML
 *   entity named from the variable ajaxobjtype, default to "generic"
 *
 * HTML output:
 *   each Name-value pair is output as a single row of a two-column table.
 *   Sections (blank lines in the input) are separated by a <HR>
 *
 */
static void xml_translate(struct ast_str **out, char *in, struct ast_variable *vars, enum output_format format)
{
   struct ast_variable *v;
   char *dest = NULL;
   char *var, *val;
   char *objtype = NULL;
   int in_data = 0;  /* parsing data */
   int inobj = 0;
   int xml = (format == FORMAT_XML);

   for (v = vars; v; v = v->next) {
      if (!dest && !strcasecmp(v->name, "ajaxdest"))
         dest = v->value;
      else if (!objtype && !strcasecmp(v->name, "ajaxobjtype"))
         objtype = v->value;
   }
   if (!dest)
      dest = "unknown";
   if (!objtype)
      objtype = "generic";
#if 0
   /* determine how large is the response.
    * This is a heuristic - counting colons (for headers),
    * newlines (for extra arguments), and escaped chars.
    * XXX needs to be checked carefully for overflows.
    * Even better, use some code that allows extensible strings.
    */
   for (x = 0; in[x]; x++) {
      if (in[x] == ':')
         colons++;
      else if (in[x] == '\n')
         breaks++;
      else if (strchr("&\"<>", in[x]))
         escaped++;
   }
   len = (size_t) (1 + strlen(in) + colons * 5 + breaks * (40 + strlen(dest) + strlen(objtype)) + escaped * 10); /* foo="bar", "<response type=\"object\" id=\"dest\"", "&amp;" */
   out = ast_malloc(len);
   if (!out)
      return NULL;
   tmp = out;
   *tmp = '\0';
#endif
   /* we want to stop when we find an empty line */
   while (in && *in) {
      val = strsep(&in, "\r\n"); /* mark start and end of line */
      if (in && *in == '\n')     /* remove trailing \n if any */
         in++;
      ast_trim_blanks(val);
      if (0)
         ast_verbose("inobj %d in_data %d line <%s>\n", inobj, in_data, val);
      if (ast_strlen_zero(val)) {
         if (in_data) { /* close data */
            ast_str_append(out, 0, xml ? "'" : "</td></tr>\n");
            in_data = 0;
         }
         ast_str_append(out, 0, xml ? " /></response>\n" :
            "<tr><td colspan=\"2\"><hr></td></tr>\r\n");
         inobj = 0;
         continue;
      }
      /* we expect Name: value lines */
      if (in_data) {
         var = NULL;
      } else {
         var = strsep(&val, ":");
         if (val) {  /* found the field name */
            val = ast_skip_blanks(val);
            ast_trim_blanks(var);
         } else {    /* field name not found, move to opaque mode */
            val = var;
            var = "Opaque-data";
         }
      }
      if (!inobj) {
         if (xml)
            ast_str_append(out, 0, "<response type='object' id='%s'><%s", dest, objtype);
         else
            ast_str_append(out, 0, "<body>\n");
         inobj = 1;
      }
      if (!in_data) {   /* build appropriate line start */
         ast_str_append(out, 0, xml ? " " : "<tr><td>");
         xml_copy_escape(out, var, xml ? 1 | 2 : 0);
         ast_str_append(out, 0, xml ? "='" : "</td><td>");
         if (!strcmp(var, "Opaque-data"))
            in_data = 1;
      }
      xml_copy_escape(out, val, 0); /* data field */
      if (!in_data)
         ast_str_append(out, 0, xml ? "'" : "</td></tr>\n");
      else
         ast_str_append(out, 0, xml ? "\n" : "<br>\n");
   }
   if (inobj)
      ast_str_append(out, 0, xml ? " /></response>\n" :
         "<tr><td colspan=\"2\"><hr></td></tr>\r\n");
}

static struct ast_str *generic_http_callback(enum output_format format,
                    struct sockaddr_in *requestor, const char *uri,
                    struct ast_variable *params, int *status,
                    char **title, int *contentlength)
{
   struct mansession *s = NULL;
   unsigned long ident = 0; /* invalid, so find_session will fail if not set through the cookie */
   int blastaway = 0;
   struct ast_variable *v;
   char template[] = "/tmp/ast-http-XXXXXX"; /* template for temporary file */
   struct ast_str *out = NULL;
   struct message m = { 0 };
   unsigned int x;
   size_t hdrlen;

   for (v = params; v; v = v->next) {
      if (!strcasecmp(v->name, "mansession_id")) {
         sscanf(v->value, "%lx", &ident);
         break;
      }
   }

   if (!(s = find_session(ident))) {
      /* Create new session.
       * While it is not in the list we don't need any locking
       */
      if (!(s = ast_calloc(1, sizeof(*s)))) {
         *status = 500;
         goto generic_callback_out;
      }
      s->sin = *requestor;
      s->fd = -1;
      s->waiting_thread = AST_PTHREADT_NULL;
      s->send_events = 0;
      ast_mutex_init(&s->__lock);
      ast_mutex_lock(&s->__lock);
      s->inuse = 1;
      s->managerid = rand() | 1; /* make sure it is non-zero */
      s->last_ev = grab_last();
      AST_LIST_LOCK(&sessions);
      AST_LIST_INSERT_HEAD(&sessions, s, list);
      AST_LIST_UNLOCK(&sessions);
      ast_atomic_fetchadd_int(&num_sessions, 1);
   }

   ast_mutex_unlock(&s->__lock);

   if (!(out = ast_str_create(1024))) {
      *status = 500;
      goto generic_callback_out;
   }

   s->fd = mkstemp(template); /* create a temporary file for command output */
   unlink(template);
   s->f = fdopen(s->fd, "w+");

   for (x = 0, v = params; v && (x < AST_MAX_MANHEADERS); x++, v = v->next) {
      hdrlen = strlen(v->name) + strlen(v->value) + 3;
      m.headers[m.hdrcount] = alloca(hdrlen);
      snprintf((char *) m.headers[m.hdrcount], hdrlen, "%s: %s", v->name, v->value);
      m.hdrcount = x + 1;
   }

   if (process_message(s, &m)) {
      if (s->authenticated) {
         if (option_verbose > 1) {
            if (displayconnects)
               ast_verbose(VERBOSE_PREFIX_2 "HTTP Manager '%s' logged off from %s\n", s->username, ast_inet_ntoa(s->sin.sin_addr));
         }
         ast_log(LOG_EVENT, "HTTP Manager '%s' logged off from %s\n", s->username, ast_inet_ntoa(s->sin.sin_addr));
      } else {
         if (option_verbose > 1) {
            if (displayconnects)
               ast_verbose(VERBOSE_PREFIX_2 "HTTP Connect attempt from '%s' unable to authenticate\n", ast_inet_ntoa(s->sin.sin_addr));
         }
         ast_log(LOG_EVENT, "HTTP Failed attempt from %s\n", ast_inet_ntoa(s->sin.sin_addr));
      }
      s->needdestroy = 1;
   }

   ast_str_append(&out, 0,
             "Content-type: text/%s\r\n"
             "Cache-Control: no-cache;\r\n"
             "Set-Cookie: mansession_id=\"%08lx\"; Version=\"1\"; Max-Age=%d\r\n"
             "\r\n",
         contenttype[format],
         s->managerid, httptimeout);

   if (format == FORMAT_XML) {
      ast_str_append(&out, 0, "<ajax-response>\n");
   } else if (format == FORMAT_HTML) {

#define ROW_FMT   "<tr><td colspan=\"2\" bgcolor=\"#f1f1ff\">%s</td></tr>\r\n"
#define TEST_STRING \
   "<form action=\"manager\">action: <input name=\"action\"> cmd <input name=\"command\"><br> \
   user <input name=\"username\"> pass <input type=\"password\" name=\"secret\"><br> \
   <input type=\"submit\"></form>"

      ast_str_append(&out, 0, "<title>Asterisk&trade; Manager Interface</title>");
      ast_str_append(&out, 0, "<body bgcolor=\"#ffffff\"><table align=center bgcolor=\"#f1f1f1\" width=\"500\">\r\n");
      ast_str_append(&out, 0, ROW_FMT, "<h1>Manager Tester</h1>");
      ast_str_append(&out, 0, ROW_FMT, TEST_STRING);
   }

   if (s->f != NULL) {  /* have temporary output */
      char *buf;
      size_t l = ftell(s->f);

      if (format == FORMAT_XML || format == FORMAT_HTML) {
         if (l) {
            if ((buf = mmap(NULL, l, PROT_READ | PROT_WRITE, MAP_SHARED, s->fd, 0))) {
               xml_translate(&out, buf, params, format);
               munmap(buf, l);
            }
         } else {
            xml_translate(&out, "", params, format);
         }
      }
      fclose(s->f);
      s->f = NULL;
      s->fd = -1;
   }

   if (format == FORMAT_XML) {
      ast_str_append(&out, 0, "</ajax-response>\n");
   } else if (format == FORMAT_HTML)
      ast_str_append(&out, 0, "</table></body>\r\n");

   ast_mutex_lock(&s->__lock);
   /* Reset HTTP timeout.  If we're not authenticated, keep it extremely short */
   s->sessiontimeout = time(NULL) + ((s->authenticated || httptimeout < 5) ? httptimeout : 5);

   if (s->needdestroy) {
      if (s->inuse == 1) {
         if (option_debug)
            ast_log(LOG_DEBUG, "Need destroy, doing it now!\n");
         blastaway = 1;
      } else {
         if (option_debug)
            ast_log(LOG_DEBUG, "Need destroy, but can't do it yet!\n");
         if (s->waiting_thread != AST_PTHREADT_NULL)
            pthread_kill(s->waiting_thread, SIGURG);
         s->inuse--;
      }
   } else
      s->inuse--;
   ast_mutex_unlock(&s->__lock);

   if (blastaway)
      destroy_session(s);
generic_callback_out:
   if (*status != 200)
      return ast_http_error(500, "Server Error", NULL, "Internal Server Error (out of memory)\n");
   return out;
}

static struct ast_str *manager_http_callback(struct sockaddr_in *requestor, const char *uri, struct ast_variable *params, int *status, char **title, int *contentlength)
{
   return generic_http_callback(FORMAT_HTML, requestor, uri, params, status, title, contentlength);
}

static struct ast_str *mxml_http_callback(struct sockaddr_in *requestor, const char *uri, struct ast_variable *params, int *status, char **title, int *contentlength)
{
   return generic_http_callback(FORMAT_XML, requestor, uri, params, status, title, contentlength);
}

static struct ast_str *rawman_http_callback(struct sockaddr_in *requestor, const char *uri, struct ast_variable *params, int *status, char **title, int *contentlength)
{
   return generic_http_callback(FORMAT_RAW, requestor, uri, params, status, title, contentlength);
}

struct ast_http_uri rawmanuri = {
   .description = "Raw HTTP Manager Event Interface",
   .uri = "rawman",
   .has_subtree = 0,
   .callback = rawman_http_callback,
};

struct ast_http_uri manageruri = {
   .description = "HTML Manager Event Interface",
   .uri = "manager",
   .has_subtree = 0,
   .callback = manager_http_callback,
};

struct ast_http_uri managerxmluri = {
   .description = "XML Manager Event Interface",
   .uri = "mxml",
   .has_subtree = 0,
   .callback = mxml_http_callback,
};

static int registered = 0;
static int webregged = 0;

/*! \brief cleanup code called at each iteration of server_root,
 * guaranteed to happen every 5 seconds at most
 */
static void purge_old_stuff(void *data)
{
   purge_sessions(1);
   purge_events();
}

struct tls_config ami_tls_cfg;
static struct server_args ami_desc = {
        .accept_fd = -1,
        .master = AST_PTHREADT_NULL,
        .tls_cfg = NULL, 
        .poll_timeout = 5000, /* wake up every 5 seconds */
   .periodic_fn = purge_old_stuff,
        .name = "AMI server",
        .accept_fn = server_root,   /* thread doing the accept() */
        .worker_fn = session_do, /* thread handling the session */
};

static struct server_args amis_desc = {
        .accept_fd = -1,
        .master = AST_PTHREADT_NULL,
        .tls_cfg = &ami_tls_cfg, 
        .poll_timeout = -1,   /* the other does the periodic cleanup */
        .name = "AMI TLS server",
        .accept_fn = server_root,   /* thread doing the accept() */
        .worker_fn = session_do, /* thread handling the session */
};

int init_manager(void)
{
   struct ast_config *cfg = NULL;
   const char *val;
   char *cat = NULL;
   int webenabled = 0;
   int enabled = 0;
   int newhttptimeout = 60;
   int have_sslbindaddr = 0;
   struct hostent *hp;
   struct ast_hostent ahp;
   struct ast_manager_user *user = NULL;
   struct ast_variable *var;

   if (!registered) {
      /* Register default actions */
      ast_manager_register2("Ping", 0, action_ping, "Keepalive command", mandescr_ping);
      ast_manager_register2("Events", 0, action_events, "Control Event Flow", mandescr_events);
      ast_manager_register2("Logoff", 0, action_logoff, "Logoff Manager", mandescr_logoff);
      ast_manager_register2("Login", 0, action_login, "Login Manager", NULL);
      ast_manager_register2("Challenge", 0, action_challenge, "Generate Challenge for MD5 Auth", NULL);
      ast_manager_register2("Hangup", EVENT_FLAG_CALL, action_hangup, "Hangup Channel", mandescr_hangup);
      ast_manager_register("Status", EVENT_FLAG_CALL, action_status, "Lists channel status" );
      ast_manager_register2("Setvar", EVENT_FLAG_CALL, action_setvar, "Set Channel Variable", mandescr_setvar );
      ast_manager_register2("Getvar", EVENT_FLAG_CALL, action_getvar, "Gets a Channel Variable", mandescr_getvar );
      ast_manager_register2("GetConfig", EVENT_FLAG_CONFIG, action_getconfig, "Retrieve configuration", mandescr_getconfig);
      ast_manager_register2("UpdateConfig", EVENT_FLAG_CONFIG, action_updateconfig, "Update basic configuration", mandescr_updateconfig);
      ast_manager_register2("Redirect", EVENT_FLAG_CALL, action_redirect, "Redirect (transfer) a call", mandescr_redirect );
      ast_manager_register2("Originate", EVENT_FLAG_CALL, action_originate, "Originate Call", mandescr_originate);
      ast_manager_register2("Command", EVENT_FLAG_COMMAND, action_command, "Execute Asterisk CLI Command", mandescr_command );
      ast_manager_register2("ExtensionState", EVENT_FLAG_CALL, action_extensionstate, "Check Extension Status", mandescr_extensionstate );
      ast_manager_register2("AbsoluteTimeout", EVENT_FLAG_CALL, action_timeout, "Set Absolute Timeout", mandescr_timeout );
      ast_manager_register2("MailboxStatus", EVENT_FLAG_CALL, action_mailboxstatus, "Check Mailbox", mandescr_mailboxstatus );
      ast_manager_register2("MailboxCount", EVENT_FLAG_CALL, action_mailboxcount, "Check Mailbox Message Count", mandescr_mailboxcount );
      ast_manager_register2("ListCommands", 0, action_listcommands, "List available manager commands", mandescr_listcommands);
      ast_manager_register2("SendText", EVENT_FLAG_CALL, action_sendtext, "Send text message to channel", mandescr_sendtext);
      ast_manager_register2("UserEvent", EVENT_FLAG_USER, action_userevent, "Send an arbitrary event", mandescr_userevent);
      ast_manager_register2("WaitEvent", 0, action_waitevent, "Wait for an event to occur", mandescr_waitevent);

      ast_cli_register_multiple(cli_manager, sizeof(cli_manager) / sizeof(struct ast_cli_entry));
      ast_extension_state_add(NULL, NULL, manager_state_cb, NULL);
      registered = 1;
      /* Append placeholder event so master_eventq never runs dry */
      append_event("Event: Placeholder\r\n\r\n", 0);
   }
   displayconnects = 1;
   cfg = ast_config_load("manager.conf");
   if (!cfg) {
      ast_log(LOG_NOTICE, "Unable to open management configuration manager.conf.  Call management disabled.\n");
      return 0;
   }

   /* default values */
   memset(&ami_desc.sin, 0, sizeof(struct sockaddr_in));
   memset(&amis_desc.sin, 0, sizeof(amis_desc.sin));
   amis_desc.sin.sin_port = htons(5039);
   ami_desc.sin.sin_port = htons(DEFAULT_MANAGER_PORT);

   ami_tls_cfg.enabled = 0;
   if (ami_tls_cfg.certfile)
      free(ami_tls_cfg.certfile);
   ami_tls_cfg.certfile = ast_strdup(AST_CERTFILE);
   if (ami_tls_cfg.cipher)
      free(ami_tls_cfg.cipher);
   ami_tls_cfg.cipher = ast_strdup("");

   for (var = ast_variable_browse(cfg, "general"); var; var = var->next) {
      val = var->value;
      if (!strcasecmp(var->name, "ssenable"))
         ami_tls_cfg.enabled = ast_true(val);
      else if (!strcasecmp(var->name, "ssbindport"))
         amis_desc.sin.sin_port = htons(atoi(val));
      else if (!strcasecmp(var->name, "ssbindaddr")) {
         if ((hp = ast_gethostbyname(val, &ahp))) {
            memcpy(&amis_desc.sin.sin_addr, hp->h_addr, sizeof(amis_desc.sin.sin_addr));
            have_sslbindaddr = 1;
         } else {
            ast_log(LOG_WARNING, "Invalid bind address '%s'\n", val);
         }
      } else if (!strcasecmp(var->name, "sslcert")) {
         free(ami_tls_cfg.certfile);
         ami_tls_cfg.certfile = ast_strdup(val);
      } else if (!strcasecmp(var->name, "sslcipher")) {
         free(ami_tls_cfg.cipher);
         ami_tls_cfg.cipher = ast_strdup(val);
      } else if (!strcasecmp(var->name, "enabled")) {
         enabled = ast_true(val);
      } else if (!strcasecmp(var->name, "block-sockets")) {
         block_sockets = ast_true(val);
      } else if (!strcasecmp(var->name, "webenabled")) {
         webenabled = ast_true(val);
      } else if (!strcasecmp(var->name, "port")) {
         ami_desc.sin.sin_port = htons(atoi(val));
      } else if (!strcasecmp(var->name, "bindaddr")) {
         if (!inet_aton(val, &ami_desc.sin.sin_addr)) {
            ast_log(LOG_WARNING, "Invalid address '%s' specified, using 0.0.0.0\n", val);
            memset(&ami_desc.sin.sin_addr, 0, sizeof(ami_desc.sin.sin_addr));
         }
      } else if (!strcasecmp(var->name, "displayconnects")) {
         displayconnects = ast_true(val);
      } else if (!strcasecmp(var->name, "timestampevents")) {
         timestampevents = ast_true(val);
      } else if (!strcasecmp(var->name, "debug")) {
         manager_debug = ast_true(val);
      } else if (!strcasecmp(var->name, "httptimeout")) {
         newhttptimeout = atoi(val);
      } else {
         ast_log(LOG_NOTICE, "Invalid keyword <%s> = <%s> in manager.conf [general]\n",
            var->name, val);
      }  
   }

   if (enabled)
      ami_desc.sin.sin_family = AF_INET;
   if (!have_sslbindaddr)
      amis_desc.sin.sin_addr = ami_desc.sin.sin_addr;
   if (ami_tls_cfg.enabled)
      amis_desc.sin.sin_family = AF_INET;

   
   AST_LIST_LOCK(&users);

   while ((cat = ast_category_browse(cfg, cat))) {

      if (!strcasecmp(cat, "general"))
         continue;

      /* Look for an existing entry, if none found - create one and add it to the list */
      if (!(user = get_manager_by_name_locked(cat))) {
         if (!(user = ast_calloc(1, sizeof(*user))))
            break;
         /* Copy name over */
         ast_copy_string(user->username, cat, sizeof(user->username));
         /* Insert into list */
         AST_LIST_INSERT_TAIL(&users, user, list);
      }

      /* Make sure we keep this user and don't destroy it during cleanup */
      user->keep = 1;

      var = ast_variable_browse(cfg, cat);
      while (var) {
         if (!strcasecmp(var->name, "secret")) {
            if (user->secret)
               free(user->secret);
            user->secret = ast_strdup(var->value);
         } else if (!strcasecmp(var->name, "deny") ) {
            if (user->deny)
               free(user->deny);
            user->deny = ast_strdup(var->value);
         } else if (!strcasecmp(var->name, "permit") ) {
            if (user->permit)
               free(user->permit);
            user->permit = ast_strdup(var->value);
         }  else if (!strcasecmp(var->name, "read") ) {
            if (user->read)
               free(user->read);
            user->read = ast_strdup(var->value);
         }  else if (!strcasecmp(var->name, "write") ) {
            if (user->write)
               free(user->write);
            user->write = ast_strdup(var->value);
         }  else if (!strcasecmp(var->name, "displayconnects") )
            user->displayconnects = ast_true(var->value);
         else {
            if (option_debug)
               ast_log(LOG_DEBUG, "%s is an unknown option.\n", var->name);
         }
         var = var->next;
      }
   }

   /* Perform cleanup - essentially prune out old users that no longer exist */
   AST_LIST_TRAVERSE_SAFE_BEGIN(&users, user, list) {
      if (user->keep) { /* valid record. clear flag for the next round */
         user->keep = 0;
         continue;
      }
      /* We do not need to keep this user so take them out of the list */
      AST_LIST_REMOVE_CURRENT(&users, list);
      /* Free their memory now */
      if (user->secret)
         free(user->secret);
      if (user->deny)
         free(user->deny);
      if (user->permit)
         free(user->permit);
      if (user->read)
         free(user->read);
      if (user->write)
         free(user->write);
      free(user);
   }
   AST_LIST_TRAVERSE_SAFE_END

   AST_LIST_UNLOCK(&users);

   ast_config_destroy(cfg);

   if (webenabled && enabled) {
      if (!webregged) {
         ast_http_uri_link(&rawmanuri);
         ast_http_uri_link(&manageruri);
         ast_http_uri_link(&managerxmluri);
         webregged = 1;
      }
   } else {
      if (webregged) {
         ast_http_uri_unlink(&rawmanuri);
         ast_http_uri_unlink(&manageruri);
         ast_http_uri_unlink(&managerxmluri);
         webregged = 0;
      }
   }

   if (newhttptimeout > 0)
      httptimeout = newhttptimeout;

   server_start(&ami_desc);
   if (ssl_setup(amis_desc.tls_cfg))
      server_start(&amis_desc);
   return 0;
}

int reload_manager(void)
{
   manager_event(EVENT_FLAG_SYSTEM, "Reload", "Message: Reload Requested\r\n");
   return init_manager();
}

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