mi_core.c

Go to the documentation of this file.

/*
 * $Id: mi_core.c 4762 2008-08-28 11:27:31Z henningw $
 *
 * Copyright (C) 2006 Voice Sistem SRL
 *
 * This file is part of Kamailio, a free SIP server.
 *
 * Kamailio is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Kamailio is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 *
 * history:
 * ---------
 *  2006-09-08  first version (bogdan)
 */


/*!
 * \file 
 * \brief MI :: Core 
 * \ingroup mi
 */



#include <time.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <signal.h>

#include "../dprint.h"
#include "../globals.h"
#include "../ut.h"
#include "../pt.h"
#include "../mem/mem.h"
#include "mi.h"
#include "../version.h"

#define BUILD_STR __FILE__ " compiled on "__TIME__ " " __DATE__ " with " COMPILER "\n"
#define BUILD_STR_LEN (sizeof(BUILD_STR)-1)

#ifndef SVNREVISION
#define SVNREVISION "unknown"
#endif

static time_t up_since;
static str    up_since_ctime;

static int init_mi_uptime(void)
{
   char *p;

   time(&up_since);
   p = ctime(&up_since);
   up_since_ctime.len = strlen(p)-1;
   up_since_ctime.s = (char*)pkg_malloc(up_since_ctime.len);
   if (up_since_ctime.s==0) {
      LM_ERR("no more pkg mem\n");
      return -1;
   }
   memcpy(up_since_ctime.s, p , up_since_ctime.len);
   return 0;
}


static struct mi_root *mi_uptime(struct mi_root *cmd, void *param)
{
   struct mi_root *rpl_tree;
   struct mi_node *rpl;
   struct mi_node *node;
   time_t now;
   char   *p;

   rpl_tree = init_mi_tree( 200, MI_SSTR(MI_OK));
   if (rpl_tree==0)
      return 0;
   rpl = &rpl_tree->node;

   time(&now);
   p = ctime(&now);
   node = add_mi_node_child( rpl, MI_DUP_VALUE, MI_SSTR("Now"),
      p, strlen(p)-1);
   if (node==0)
      goto error;

   node = add_mi_node_child( rpl, 0, MI_SSTR("Up since"),
      up_since_ctime.s, up_since_ctime.len);
   if (node==0)
      goto error;

   node = addf_mi_node_child( rpl, 0, MI_SSTR("Up time"),
      "%lu [sec]", (unsigned long)difftime(now, up_since) );
   if (node==0)
      goto error;

   return rpl_tree;
error:
   LM_ERR("failed to add node\n");
   free_mi_tree(rpl_tree);
   return 0;
}

static struct mi_root *mi_version(struct mi_root *cmd, void *param)
{
   struct mi_root *rpl_tree;
   struct mi_node *rpl;
   struct mi_node *node;

   rpl_tree = init_mi_tree( 200, MI_SSTR(MI_OK));
   if (rpl_tree==0)
      return 0;
   rpl = &rpl_tree->node;

   node = add_mi_node_child( rpl, 0, MI_SSTR("Server"), SERVER_HDR+8,
      SERVER_HDR_LEN-8);
   if (node==0) 
      goto error;

   node = add_mi_node_child( rpl, 0, MI_SSTR("Build"), BUILD_STR,
         BUILD_STR_LEN);
   if (node==0) 
      goto error;

   node = add_mi_node_child( rpl, 0, MI_SSTR("Flags"), KAMAILIO_COMPILE_FLAGS,
         sizeof(KAMAILIO_COMPILE_FLAGS)-1);
   if (node==0) 
      goto error; 
   
   node = add_mi_node_child( rpl, 0, MI_SSTR("SVN"), SVNREVISION,
         sizeof(SVNREVISION)-1);
   if (node==0) 
      goto error;

      
   
   return rpl_tree;
error:
   LM_ERR("failed to add node\n");
   free_mi_tree(rpl_tree);
   return 0;

}



static struct mi_root *mi_pwd(struct mi_root *cmd, void *param)
{
   static int max_len = 0;
   static char *cwd_buf = 0;
   struct mi_root *rpl_tree;
   struct mi_node *rpl;
   struct mi_node *node;

   if (cwd_buf==NULL) {
      max_len = pathmax();
      cwd_buf = pkg_malloc(max_len);
      if (cwd_buf==NULL) {
         LM_ERR("no more pkg mem\n");
         return 0;
      }
   }

   rpl_tree = init_mi_tree( 200, MI_SSTR(MI_OK));
   if (rpl_tree==0)
      return 0;
   rpl = &rpl_tree->node;

   if (getcwd(cwd_buf, max_len)==0) {
      LM_ERR("getcwd failed = %s\n",strerror(errno));
      goto error;
   }

   node = add_mi_node_child( rpl, 0, MI_SSTR("WD"), cwd_buf,strlen(cwd_buf));
   if (node==0) {
      LM_ERR("failed to add node\n");
      goto error;
   }

   return rpl_tree;
error:
   free_mi_tree(rpl_tree);
   return 0;
}



static struct mi_root *mi_arg(struct mi_root *cmd, void *param)
{
   struct mi_root *rpl_tree;
   struct mi_node *rpl;
   struct mi_node *node;
   int n;

   rpl_tree = init_mi_tree( 200, MI_SSTR(MI_OK));
   if (rpl_tree==0)
      return 0;
   rpl = &rpl_tree->node;

   for ( n=0; n<my_argc ; n++ ) {
      node = add_mi_node_child(rpl, 0, 0, 0, my_argv[n], strlen(my_argv[n]));
      if (node==0) {
         LM_ERR("failed to add node\n");
         free_mi_tree(rpl_tree);
         return 0;
      }
   }

   return rpl_tree;
}



static struct mi_root *mi_which(struct mi_root *cmd, void *param)
{
   struct mi_root *rpl_tree;
   struct mi_cmd  *cmds;
   struct mi_node *rpl;
   struct mi_node *node;
   int size;
   int i;

   rpl_tree = init_mi_tree( 200, MI_SSTR(MI_OK));
   if (rpl_tree==0)
      return 0;
   rpl = &rpl_tree->node;

   get_mi_cmds( &cmds, &size);
   for ( i=0 ; i<size ; i++ ) {
      node = add_mi_node_child( rpl, 0, 0, 0, cmds[i].name.s,
         cmds[i].name.len);
      if (node==0) {
         LM_ERR("failed to add node\n");
         free_mi_tree(rpl_tree);
         return 0;
      }
   }

   return rpl_tree;
}



static struct mi_root *mi_ps(struct mi_root *cmd, void *param)
{
   struct mi_root *rpl_tree;
   struct mi_node *rpl;
   struct mi_node *node;
   struct mi_attr *attr;
   char *p;
   int len;
   int i;

   rpl_tree = init_mi_tree( 200, MI_SSTR(MI_OK));
   if (rpl_tree==0)
      return 0;
   rpl = &rpl_tree->node;

   for ( i=0 ; i<counted_processes ; i++ ) {
      node = add_mi_node_child(rpl, 0, MI_SSTR("Process"), 0, 0 );
      if (node==0)
         goto error;

      p = int2str((unsigned long)i, &len);
      attr = add_mi_attr( node, MI_DUP_VALUE, MI_SSTR("ID"), p, len);
      if (attr==0)
         goto error;

      p = int2str((unsigned long)pt[i].pid, &len);
      attr = add_mi_attr( node, MI_DUP_VALUE, MI_SSTR("PID"), p, len);
      if (attr==0)
         goto error;

      attr = add_mi_attr( node, 0, MI_SSTR("Type"),
         pt[i].desc, strlen(pt[i].desc));
      if (attr==0)
         goto error;
   }

   return rpl_tree;
error:
   LM_ERR("failed to add node\n");
   free_mi_tree(rpl_tree);
   return 0;
}



static struct mi_root *mi_kill(struct mi_root *cmd, void *param)
{
   kill(0, SIGTERM);

   return 0;
}



static struct mi_root *mi_debug(struct mi_root *cmd, void *param)
{
   struct mi_root *rpl_tree;
   struct mi_node *node;
   char *p;
   int len;
   int new_debug;

#ifdef CHANGEABLE_DEBUG_LEVEL
   node = cmd->node.kids;
   if (node!=NULL) {
      if (str2sint( &node->value, &new_debug) < 0)
         return init_mi_tree( 400, MI_SSTR(MI_BAD_PARM));
   } else
      new_debug = *debug;
#else
      new_debug = debug;
#endif

   rpl_tree = init_mi_tree( 200, MI_SSTR(MI_OK));
   if (rpl_tree==0)
      return 0;

   p = sint2str((long)new_debug, &len);
   node = add_mi_node_child( &rpl_tree->node, MI_DUP_VALUE,
      MI_SSTR("DEBUG"),p, len);
   if (node==0) {
      free_mi_tree(rpl_tree);
      return 0;
   }

#ifdef CHANGEABLE_DEBUG_LEVEL
   *debug = new_debug;
#endif

   return rpl_tree;
}



static mi_export_t mi_core_cmds[] = {
   { "uptime",   mi_uptime,   MI_NO_INPUT_FLAG,  0,  init_mi_uptime },
   { "version",  mi_version,  MI_NO_INPUT_FLAG,  0,  0 },
   { "pwd",      mi_pwd,      MI_NO_INPUT_FLAG,  0,  0 },
   { "arg",      mi_arg,      MI_NO_INPUT_FLAG,  0,  0 },
   { "which",    mi_which,    MI_NO_INPUT_FLAG,  0,  0 },
   { "ps",       mi_ps,       MI_NO_INPUT_FLAG,  0,  0 },
   { "kill",     mi_kill,     MI_NO_INPUT_FLAG,  0,  0 },
   { "debug",    mi_debug,                   0,  0,  0 },
   { 0, 0, 0, 0, 0}
};



int init_mi_core(void)
{
   if (register_mi_mod( "core", mi_core_cmds)<0) {
      LM_ERR("unable to register core MI cmds\n");
      return -1;
   }

   return 0;
}