/*
  Copyright (c) 2003 Novell, Inc. All Rights Reserved. 

  This program 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. 

  This program 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
*/ 

#include <stdio.h>
#include <errno.h>
#ifndef __WIN__
#include <dirent.h>
#endif
#include <string.h>
#ifdef __NETWARE__
#include <screen.h>
#include <proc.h>
#else
#include <sys/types.h>
#ifndef __WIN__
#include <sys/wait.h>
#include <unistd.h>
#else
#include <direct.h>
#include <stdlib.h>
#include <stdio.h>
#endif
#endif
#include <ctype.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <assert.h>

#include "my_manage.h"

#ifndef __NETWARE__
#define ASSERT assert
extern char **environ;
#endif



/******************************************************************************

	macros
	
******************************************************************************/

/******************************************************************************

	global variables
	
******************************************************************************/

/******************************************************************************

	functions
	
******************************************************************************/

/******************************************************************************

	init_args()
	
	Init an argument list.

******************************************************************************/
void init_args(arg_list_t *al)
{
  ASSERT(al != NULL);
  
  al->argc = 0;
  al->size = ARG_BUF;
  al->argv = malloc(al->size * sizeof(char *));
  ASSERT(al->argv != NULL);

  return;
}

/******************************************************************************

	add_arg()
	
	Add an argument to a list.

******************************************************************************/
void add_arg(arg_list_t *al, const char *format, ...)
{
  va_list ap;
  char temp[PATH_MAX];

  ASSERT(al != NULL);

  // increase size
  if (al->argc >= (int)al->size)
  {
    al->size += ARG_BUF;
    al->argv = realloc(al->argv, al->size * sizeof(char *));
    ASSERT(al->argv != NULL);
  }

  if (format)
  {
    va_start(ap, format);
    vsprintf(temp, format, ap);
    va_end(ap);

    al->argv[al->argc] = malloc(strlen(temp)+1);
    ASSERT(al->argv[al->argc] != NULL);
    strcpy(al->argv[al->argc], temp);

    ++(al->argc);
  }
  else
  {
    al->argv[al->argc] = NULL;
  }

  return;
}

/******************************************************************************

	free_args()
	
	Free an argument list.

******************************************************************************/
void free_args(arg_list_t *al)
{
  int i;

  ASSERT(al != NULL);

  for(i = 0; i < al->argc; i++)
  {
    ASSERT(al->argv[i] != NULL);
    free(al->argv[i]);
    al->argv[i] = NULL;
  }

  free(al->argv);
  al->argc = 0;
  al->argv = NULL;

  return;
}

/******************************************************************************

	sleep_until_file_deleted()
	
	Sleep until the given file is no longer found.

******************************************************************************/
#ifndef __WIN__
int sleep_until_file_deleted(char *pid_file)
#else
int sleep_until_file_deleted(HANDLE pid_file)
#endif
{
  int err;
#ifndef __WIN__
	struct stat buf;
	int i;
	
	for(i = 0; (i < TRY_MAX) && (err = !stat(pid_file, &buf)); i++) sleep(1);
	
	if (err != 0) err = errno;
#else
  err= (WaitForSingleObject(pid_file, TRY_MAX*1000) == WAIT_TIMEOUT);
#endif
	return err;
}

/******************************************************************************

	sleep_until_file_exists()

	Sleep until the given file exists.

******************************************************************************/
#ifndef __WIN__
int sleep_until_file_exists(char *pid_file)
#else
int sleep_until_file_exists(HANDLE pid_file)
#endif
{
  int err;
#ifndef __WIN__
	struct stat buf;
	int i;
	
	for(i = 0; (i < TRY_MAX) && (err = stat(pid_file, &buf)); i++) sleep(1);
	
	if (err != 0) err = errno;
#else
  err= (WaitForSingleObject(pid_file, TRY_MAX*1000) == WAIT_TIMEOUT);
#endif
	return err;
}

/******************************************************************************

	wait_for_server_start()
	
	Wait for the server on the given port to start.

******************************************************************************/
int wait_for_server_start(char *bin_dir, char *mysqladmin_file, char *user, char *password, int port,char *tmp_dir)
{
  arg_list_t al;
  int err, i;
  char trash[PATH_MAX];
  
	// mysqladmin file
  snprintf(trash, PATH_MAX, "%s/trash.out",tmp_dir);
	
  // args
  init_args(&al);
  add_arg(&al, "%s", mysqladmin_file);
  add_arg(&al, "--no-defaults");
  add_arg(&al, "--port=%u", port);
  add_arg(&al, "--user=%s", user);
  add_arg(&al, "--password=%s", password);
  add_arg(&al, "--silent");

//#ifdef NOT_USED
#ifndef __NETWARE__
  add_arg(&al, "-O");
  add_arg(&al, "connect_timeout=10");
  add_arg(&al, "-w");
#endif

  add_arg(&al, "--host=localhost");
#ifndef __NETWARE__
  add_arg(&al, "--protocol=tcp");
#endif  
  add_arg(&al, "ping");

	// NetWare does not support the connect timeout in the TCP/IP stack
	// -- we will try the ping multiple times
#ifndef __WIN__
	for(i = 0; (i < TRY_MAX)
       && (err = spawn(mysqladmin_file, &al, TRUE, NULL,
                       trash, NULL, NULL)); i++) sleep(1);
#else
  err = spawn(mysqladmin_file, &al, TRUE, NULL,trash, NULL, NULL);
#endif

  // free args
  free_args(&al);

  return err;
}

/******************************************************************************

	spawn()
	
	Spawn the given path with the given arguments.

******************************************************************************/
#ifdef __NETWARE__
int spawn(char *path, arg_list_t *al, int join, char *input,
          char *output, char *error, char *pid_file)
{
	pid_t pid;
  int result = 0;
  wiring_t wiring = { FD_UNUSED, FD_UNUSED, FD_UNUSED };
  unsigned long flags = PROC_CURRENT_SPACE | PROC_INHERIT_CWD;

  // open wiring
  if (input)
    wiring.infd = open(input, O_RDONLY);

  if (output)
    wiring.outfd = open(output, O_WRONLY | O_CREAT | O_TRUNC);

  if (error)
    wiring.errfd = open(error, O_WRONLY | O_CREAT | O_TRUNC);

  // procve requires a NULL
  add_arg(al, NULL);

  // go
  pid = procve(path, flags, NULL, &wiring, NULL, NULL, 0,
               NULL, (const char **)al->argv);

  // close wiring
  if (wiring.infd != -1)
    close(wiring.infd);

  if (wiring.outfd != -1)
    close(wiring.outfd);

  if (wiring.errfd != -1)
    close(wiring.errfd);

	return result;
}
#elif __WIN__

int spawn(char *path, arg_list_t *al, int join, char *input,
          char *output, char *error, HANDLE *pid)
{
  intptr_t result;
  int i;
  STARTUPINFO startup_info;
  PROCESS_INFORMATION process_information;
  DWORD exit_code;
  char win_args[1024]= "";
  char command_line[1024]= "";

  /*
    Skip the first parameter
  */
  for(i = 1; i < al->argc; i++)
  {
    ASSERT(al->argv[i] != NULL);
    strcat(win_args,al->argv[i]);
    strcat(win_args," ");
  } 

  memset(&startup_info,0,sizeof(STARTUPINFO));
  startup_info.cb = sizeof(STARTUPINFO);

  if (input)
    freopen(input, "rb", stdin);

  if (output)
    freopen(output, "wb", stdout);

  if (error)
    freopen(error, "wb", stderr);

  result= CreateProcess(
    path,
    (LPSTR)&win_args,
    NULL,
    NULL,
    TRUE,
    0,
    NULL,
    NULL,
    &startup_info,
    &process_information
  );

  if (result && process_information.hProcess)
  {
    if (join)
    {
      if (WaitForSingleObject(process_information.hProcess, mysqld_timeout) == WAIT_TIMEOUT)
      {
        exit_code= -1;
      }
      else
      {
        GetExitCodeProcess(process_information.hProcess, &exit_code);
      }
      CloseHandle(process_information.hProcess);
    }
    else
    {
      exit_code= 0;
    }
    if (pid != NULL)
      *pid= process_information.hProcess;
  }
  else
  {
    exit_code= -1;
  }
  if (input)
    freopen("CONIN$","rb",stdin);
  if (output)
    freopen("CONOUT$","wb",stdout);
  if (error)
    freopen("CONOUT$","wb",stderr);

  return exit_code;
}
#else
int spawn(char *path, arg_list_t *al, int join, char *input,
          char *output, char *error, char *pid_file)
{
  pid_t pid;
  int res_exec = 0;
  int result = 0;
  
  pid = fork();
  
  if (pid == -1)
  {
    fprintf(stderr, "fork was't created\n");
    /*
	  We can't create the fork...exit with error
    */
	return EXIT_FAILURE;
  }
    
  if (pid  > 0)
  {
    /* 
	  The parent process is waiting for child process if join is not zero
	*/
    if (join)
    {
	  waitpid(pid, &result, 0);
	  if (WIFEXITED(result) != 0)
	  {
		result = WEXITSTATUS(result);
	  }
	  else
	  { 
		result = EXIT_FAILURE;
	  }
	}
  }
  else
  {
  
    /* 
	  Child process 
	*/

	add_arg(al, NULL);

	
    /* 
	  Reassign streams 
	*/
    if (input)
	  freopen(input, "r", stdin);
	

    if (output)
      freopen(output, "w", stdout);
	

    if (error)
      freopen(error, "w", stderr);

    /* Spawn the process */
    if ((res_exec = execve(path, al->argv, environ)) < 0) 
    {
      exit(EXIT_FAILURE);
    }

    /* 
	  Restore streams 
	*/
    if (input)
	  freopen("/dev/tty", "r", stdin);

    if (output)
      freopen("/dev/tty", "w", stdout);

    if (error)
      freopen("/dev/tty", "w", stderr);

    exit(0);
  }
  
  return result;
}
#endif
/******************************************************************************

	stop_server()
	
	Stop the server with the given port and pid file.

******************************************************************************/
#ifndef __WIN__
int stop_server(char *bin_dir, char *mysqladmin_file, char *user, char *password, int port,
                char *pid_file,char *tmp_dir)
#else
int stop_server(char *bin_dir, char *mysqladmin_file, char *user, char *password, int port,
                HANDLE pid_file,char *tmp_dir)
#endif
{
  arg_list_t al;
  int err = 0;
  char trash[PATH_MAX];
  
  snprintf(trash, PATH_MAX, "%s/trash.out",tmp_dir);
	
  // args
  init_args(&al);
  add_arg(&al, "%s", mysqladmin_file);
  add_arg(&al, "--no-defaults");
  add_arg(&al, "--port=%u", port);
  add_arg(&al, "--user=%s", user);
  add_arg(&al, "--password=%s", password);
  add_arg(&al, "-O");
  add_arg(&al, "shutdown_timeout=20");
#ifndef __NETWARE__
  add_arg(&al, "--protocol=tcp");
#endif  
  add_arg(&al, "shutdown");

	// spawn
  if ((err = spawn(mysqladmin_file, &al, TRUE, NULL,
                   trash, NULL, NULL)) == 0)
  {
    sleep_until_file_deleted(pid_file);
  }
  else
  {
#ifndef __WIN__
    pid_t pid = get_server_pid(pid_file);
		
    // shutdown failed - kill server
   kill_server(pid);
	
   sleep(TRY_MAX);
    
    // remove pid file if possible
   err = remove(pid_file);
#else
  TerminateProcess(pid_file,err);
#endif
  }
  
  // free args
  free_args(&al);

  return err;
}

/******************************************************************************

	get_server_pid()
	
	Get the VM id with the given pid file.

******************************************************************************/
#ifndef __WIN__
pid_t get_server_pid(char *pid_file)
{
  char buf[PATH_MAX];
  int fd, err;
  char *p;
  pid_t id = 0;
	
  // discover id
  fd = open(pid_file, O_RDONLY);
	
	err = read(fd, buf, PATH_MAX);
	
	close(fd);
	
	if (err > 0)
	{
		// terminate string
		if ((p = strchr(buf, '\n')) != NULL)
		{
			*p = '\0';
			
			// check for a '\r'
			if ((p = strchr(buf, '\r')) != NULL)
			{
				*p = '\0';
			}
		}
		else
		{
			buf[err] = '\0';
		}
		
		id = strtol(buf, NULL, 0);
	}
  
  return id;
}

/******************************************************************************

	kill_server()
	
	Force a kill of the server with the given pid.

******************************************************************************/
void kill_server(pid_t pid)
{
  if (pid > 0)
  {
#if !defined(__NETWARE__)
    /* Send SIGTERM to pid */
    kill(pid, SIGTERM);
#else /* __NETWARE__ */
    /* destroy vm */
    NXVmDestroy(pid);
#endif 
  }
}
#endif
/******************************************************************************

	del_tree()
	
	Delete the directory and subdirectories.

******************************************************************************/
void del_tree(char *dir)
{
#ifndef __WIN__
  DIR *parent = opendir(dir);
  struct dirent *entry;
  char temp[PATH_MAX];
	
  if (parent == NULL)
  {
    return;
  }

  while((entry = readdir(parent)) != NULL)
  {
    // create long name
    snprintf(temp, PATH_MAX, "%s/%s", dir, entry->d_name);

    if (entry->d_name[0] == '.')
    {
      // Skip
    }
    else 
    if (S_ISDIR(entry->d_type))
    {
      // delete subdirectory
      del_tree(temp);
    }
    else
    {
      // remove file
      remove(temp);
    }
  }
  // remove directory
  rmdir(dir);
#else
  struct _finddata_t parent;
  intptr_t handle;
  char temp[PATH_MAX];
  char mask[PATH_MAX];

  snprintf(mask,MAX_PATH,"%s/*.*",dir);

  if ((handle=_findfirst(mask,&parent)) == -1L)
  {
    return;
  }

  do
  {
    // create long name
    snprintf(temp, PATH_MAX, "%s/%s", dir, parent.name); 
    if (parent.name[0] == '.')
    {
      // Skip
    }
    else 
    if (parent.attrib & _A_SUBDIR)
    {
      // delete subdirectory
      del_tree(temp);
    }
    else
    {
      // remove file
      remove(temp);
    }
  } while (_findnext(handle,&parent) == 0);

   _findclose(handle);

  // remove directory
   _rmdir(dir);
#endif
}

/******************************************************************************

	removef()
	
******************************************************************************/
int removef(const char *format, ...)
{
#ifdef __NETWARE__  
  va_list ap;
  char path[PATH_MAX];
	
  va_start(ap, format);

  vsnprintf(path, PATH_MAX, format, ap);
	
  va_end(ap);
  return remove(path);
   
#eldef __WIN__
  {
    va_list ap;
    char path[PATH_MAX];
    struct _finddata_t parent;
    intptr_t handle;
    char temp[PATH_MAX];
    char *p;
	
    va_start(ap, format);

    vsnprintf(path, PATH_MAX, format, ap);
	
    va_end(ap);
    
    p = path + strlen(path);
    while (*p != '\\' && *p != '/' && p > path) p--;

    if ((handle=_findfirst(path,&parent)) == -1L)
    {
      /*
        if there is not files....it's ok.
      */
      return 0;
    }

    *p = '\0';

    do
    {
      if (! (parent.attrib & _A_SUBDIR))
      {
        snprintf(temp, PATH_MAX, "%s/%s", path, parent.name);
        remove(temp);
      }
    }while (_findnext(handle,&parent) == 0);

    _findclose(handle);
  }
#else
  DIR *parent;
  struct dirent *entry;
  char temp[PATH_MAX];
  va_list ap;
  char path[PATH_MAX];
  char *p;
  /*
    Get path with mask
  */	
  va_start(ap, format);

  vsnprintf(path, PATH_MAX, format, ap);
	
  va_end(ap);
  
  p = path + strlen(path);
  while (*p != '\\' && *p != '/' && p > path) p--;
  *p = '\0';
  p++;
  
  parent = opendir(path);

  if (parent == NULL)
  {
    return;
  }
	
  while((entry = readdir(parent)) != NULL)
  {
    /* 
     entry is not directory and entry matches with mask
    */
    if (!S_ISDIR(entry->d_type) && !fnmatch(p, entry->d_name,0))
    {
      // create long name
      snprintf(temp, PATH_MAX, "%s/%s", path, entry->d_name);
      // Delete only files
      remove(temp);
    }
  }
#endif
  return 0; 
}

/******************************************************************************

	get_basedir()
	
******************************************************************************/
void get_basedir(char *argv0, char *basedir)
{
  char temp[PATH_MAX];
  char *p;
  int position;
	
  ASSERT(argv0 != NULL);
  ASSERT(basedir != NULL);

  strcpy(temp, strlwr(argv0));
  while((p = strchr(temp, '\\')) != NULL) *p = '/';
	
  if ((position = strinstr(temp, "/bin/")) != 0)
  {
    p = temp + position;
    *p = '\0';
    strcpy(basedir, temp);
  }
}

#if !defined(__NETWARE__) && !defined(__WIN__)
char *strlwr(const char *s)
{
  return s;
}
#endif

uint strinstr(reg1 const char *str,reg4 const char *search)
{
  reg2 my_string i,j;
  my_string start = (my_string) str;

 skipp:
  while (*str != '\0')
  {
    if (*str++ == *search)
    {
      i=(my_string) str; j= (my_string) search+1;
      while (*j)
	if (*i++ != *j++) goto skipp;
      return ((uint) (str - start));
    }
  }
  return (0);
}

/******************************************************************************

	remove_empty_file()
	
******************************************************************************/
void remove_empty_file(const char *file_name)
{
  struct stat file;
  
  if (!stat(file_name,&file))
  {
    if (!file.st_size)
      remove(file_name);
  }
}