src/console/console.c

/*
   Bacula(R) - The Network Backup Solution

   Copyright (C) 2000-2020 Kern Sibbald

   The original author of Bacula is Kern Sibbald, with contributions
   from many others, a complete list can be found in the file AUTHORS.

   You may use this file and others of this release according to the
   license defined in the LICENSE file, which includes the Affero General
   Public License, v3.0 ("AGPLv3") and some additional permissions and
   terms pursuant to its AGPLv3 Section 7.

   This notice must be preserved when any source code is
   conveyed and/or propagated.

   Bacula(R) is a registered trademark of Kern Sibbald.
*/
/*
 *
 *   Bacula Console interface to the Director
 *
 *     Kern Sibbald, September MM
 *
 */

#include "bacula.h"
#include "console_conf.h"
#include "jcr.h"


#if defined(HAVE_CONIO)
#include "conio.h"
//#define CONIO_FIX 1
#else /* defined(HAVE_READLINE) || "DUMB" */
#define con_init(x)
#define con_term()
#define con_set_zed_keys();
#endif

void trapctlc();
void clrbrk();
int usrbrk();
static int brkflg = 0;              /* set on user break */

static int require_fips = 0;

#if defined(HAVE_WIN32)
#define isatty(fd) (fd==0)
#endif

/* Exported variables */

//extern int rl_catch_signals;

/* Imported functions */
int authenticate_director(BSOCK *dir, DIRRES *director, CONRES *cons);

/* Forward referenced functions */
static void terminate_console(int sig);
static int check_resources();
int get_cmd(FILE *input, const char *prompt, BSOCK *sock, int sec);
static int do_outputcmd(FILE *input, BSOCK *UA_sock);
void senditf(const char *fmt, ...);
void sendit(const char *buf);

extern "C" void got_sigstop(int sig);
extern "C" void got_sigcontinue(int sig);
extern "C" void got_sigtout(int sig);
extern "C" void got_sigtin(int sig);


/* Static variables */
static char *configfile = NULL;
static BSOCK *UA_sock = NULL;
static DIRRES *dir = NULL;
static CONRES *cons = NULL;
static FILE *output = stdout;
static bool teeout = false;               /* output to output and stdout */
static bool teein = false;                /* input to output and stdout */
static bool stop = false;
static bool no_conio = false;
static int timeout = 0;
static int argc;
static int numdir;
static POOLMEM *args;
static char *argk[MAX_CMD_ARGS];
static char *argv[MAX_CMD_ARGS];
static CONFIG *config;


/* Command prototypes */
static int versioncmd(FILE *input, BSOCK *UA_sock);
static int inputcmd(FILE *input, BSOCK *UA_sock);
static int outputcmd(FILE *input, BSOCK *UA_sock);
static int teecmd(FILE *input, BSOCK *UA_sock);
static int teeallcmd(FILE *input, BSOCK *UA_sock);
static int quitcmd(FILE *input, BSOCK *UA_sock);
static int helpcmd(FILE *input, BSOCK *UA_sock);
static int echocmd(FILE *input, BSOCK *UA_sock);
static int timecmd(FILE *input, BSOCK *UA_sock);
static int sleepcmd(FILE *input, BSOCK *UA_sock);
static int execcmd(FILE *input, BSOCK *UA_sock);
static int putfilecmd(FILE *input, BSOCK *UA_sock);
static int encodecmd(FILE *input, BSOCK *UA_sock);

#ifdef HAVE_READLINE
static int eolcmd(FILE *input, BSOCK *UA_sock);

# ifndef HAVE_REGEX_H
#  include "lib/bregex.h"
# else
#  include <regex.h>
# endif

#endif


#define CONFIG_FILE "bconsole.conf"   /* default configuration file */

static void usage()
{
   fprintf(stderr, _(
PROG_COPYRIGHT
"\n%sVersion: " VERSION " (" BDATE ") %s %s %s\n\n"
"Usage: bconsole [-s] [-c config_file] [-d debug_level]\n"
"       -D <dir>    select a Director\n"
"       -l          list Directors defined\n"
"       -L          list Consoles defined\n"
"       -C <cons>   select a console\n"
"       -c <file>   set configuration file to file\n"
"       -d <nn>     set debug level to <nn>\n"
"       -dt         print timestamp in debug output\n"
"       -n          no conio\n"
"       -s          no signals\n"
"       -u <nn>     set command execution timeout to <nn> seconds\n"
"       -t          test - read configuration and exit\n"
"       -?          print this message.\n"
"\n"), 2000, BDEMO, HOST_OS, DISTNAME, DISTVER);
}


extern "C"
void got_sigstop(int sig)
{
   stop = true;
}

extern "C"
void got_sigcontinue(int sig)
{
   stop = false;
}

extern "C"
void got_sigtout(int sig)
{
// printf("Got tout\n");
}

extern "C"
void got_sigtin(int sig)
{
// printf("Got tin\n");
}


static int zed_keyscmd(FILE *input, BSOCK *UA_sock)
{
   con_set_zed_keys();
   return 1;
}

/*
 * These are the @command
 */
struct cmdstruct { const char *key; int (*func)(FILE *input, BSOCK *UA_sock); const char *help; };
static struct cmdstruct commands[] = {
 { N_("input"),      inputcmd,     _("input from file")},
 { N_("output"),     outputcmd,    _("output to file")},
 { N_("quit"),       quitcmd,      _("quit")},
 { N_("tee"),        teecmd,       _("output to file and terminal")},
 { N_("tall"),       teeallcmd,    _("output everything to file and terminal (tee all)")},
 { N_("sleep"),      sleepcmd,     _("sleep specified time")},
 { N_("time"),       timecmd,      _("print current time")},
 { N_("version"),    versioncmd,   _("print Console's version")},
 { N_("echo"),       echocmd,      _("echo command string")},
 { N_("encode"),     encodecmd,    _("encode command string")},
 { N_("exec"),       execcmd,      _("execute an external command")},
 { N_("exit"),       quitcmd,      _("exit = quit")},
 { N_("putfile"),    putfilecmd,   _("send a file to the director")},
 { N_("zed_keys"),   zed_keyscmd,  _("zed_keys = use zed keys instead of bash keys")},
 { N_("help"),       helpcmd,      _("help listing")},
#ifdef HAVE_READLINE
 { N_("separator"),  eolcmd,       _("set command separator")},
#endif
             };
#define comsize ((int)(sizeof(commands)/sizeof(struct cmdstruct)))

static int do_a_command(FILE *input, BSOCK *UA_sock)
{
   unsigned int i;
   int stat;
   int found;
   int len;
   char *cmd;

   found = 0;
   stat = 1;

   Dmsg1(120, "Command: %s\n", UA_sock->msg);
   if (argc == 0) {
      return 1;
   }

   cmd = argk[0]+1;
   if (*cmd == '#') {                 /* comment */
      return 1;
   }
   len = strlen(cmd);
   for (i=0; i<comsize; i++) {     /* search for command */
      if (strncasecmp(cmd,  _(commands[i].key), len) == 0) {
         stat = (*commands[i].func)(input, UA_sock);   /* go execute command */
         found = 1;
         break;
      }
   }
   if (!found) {
      pm_strcat(&UA_sock->msg, _(": is an invalid command\n"));
      UA_sock->msglen = strlen(UA_sock->msg);
      sendit(UA_sock->msg);
   }
   return stat;
}

/* When getting .api command, we can ignore some signals, so we set
 * api_mode=true
 */
static bool api_mode=false;

static bool ignore_signal(int stat, BSOCK *s)
{
   /* Not in API mode */
   if (!api_mode) {
      return false;
   }

   /* not a signal */
   if (stat != -1) {
      return false;
   }

   /* List signal that should not stop the read loop */
   Dmsg1(100, "Got signal %s\n", bnet_sig_to_ascii(s->msglen));
   switch(s->msglen) {
   case BNET_CMD_BEGIN:
   case BNET_CMD_FAILED:        /* might want to print **ERROR** */
   case BNET_CMD_OK:            /* might want to print **OK** */
   case BNET_MSGS_PENDING:
      return true;
   default:
      break;
   }

   /* The signal should break the read loop */
   return false;
}

static void read_and_process_input(FILE *input, BSOCK *UA_sock)
{
   const char *prompt = "*";
   bool at_prompt = false;
   int tty_input = isatty(fileno(input));
   int stat;
   btimer_t *tid=NULL;

   for ( ;; ) {
      if (at_prompt) {                /* don't prompt multiple times */
         prompt = "";
      } else {
         prompt = "*";
         at_prompt = true;
      }
      if (tty_input) {
         stat = get_cmd(input, prompt, UA_sock, 30);
         if (usrbrk() >= 1) {
            clrbrk();
         }
         if (usrbrk()) {
            break;
         }
      } else {
         /* Reading input from a file */
         if (usrbrk()) {
            break;
         }
         if (bfgets(UA_sock->msg, input) == NULL) {
            stat = -1;
         } else {
            sendit(UA_sock->msg);  /* echo to terminal */
            strip_trailing_junk(UA_sock->msg);
            UA_sock->msglen = strlen(UA_sock->msg);
            stat = 1;
         }
      }
      if (stat < 0) {
         break;                       /* error or interrupt */
      } else if (stat == 0) {         /* timeout */
         if (strcmp(prompt, "*") == 0) {
            tid = start_bsock_timer(UA_sock, timeout);
            UA_sock->fsend(".messages");
            stop_bsock_timer(tid);
         } else {
            continue;
         }
      } else {
         at_prompt = false;
         /* @ => internal command for us */
         if (UA_sock->msg[0] == '@') {
            parse_args(UA_sock->msg, &args, &argc, argk, argv, MAX_CMD_ARGS);
            if (!do_a_command(input, UA_sock)) {
               break;
            }
            continue;
         }
         tid = start_bsock_timer(UA_sock, timeout);
         if (!UA_sock->send()) {   /* send command */
            stop_bsock_timer(tid);
            break;                    /* error */
         }
         stop_bsock_timer(tid);
      }
      if (strncasecmp(UA_sock->msg, ".api", 4) == 0) {
         api_mode = true;
      }
      if (strcasecmp(UA_sock->msg, ".quit") == 0 || strcasecmp(UA_sock->msg, ".exit") == 0) {
         break;
      }
      tid = start_bsock_timer(UA_sock, timeout);
      while (1) {
         stat = UA_sock->recv();
         if (ignore_signal(stat, UA_sock)) {
            continue;
         }

         if (stat < 0) {
            break;
         }

         if (at_prompt) {
            if (!stop) {
               sendit("\n");
            }
            at_prompt = false;
         }
         /* Suppress output if running in background or user hit ctl-c */
         if (!stop && !usrbrk()) {
            sendit(UA_sock->msg);
         }
      }
      stop_bsock_timer(tid);
      if (usrbrk() > 1) {
         break;
      } else {
         clrbrk();
      }
      if (!stop) {
         fflush(stdout);
      }
      if (UA_sock->is_stop()) {
         break;                       /* error or term */
      } else if (stat == BNET_SIGNAL) {
         if (UA_sock->msglen == BNET_SUB_PROMPT) {
            at_prompt = true;
         }
         Dmsg1(100, "Got poll %s\n", bnet_sig_to_ascii(UA_sock->msglen));
      }
   }
}

/*
 * Call-back for reading a passphrase for an encrypted PEM file
 * This function uses getpass(),
 *  which uses a static buffer and is NOT thread-safe.
 */
static int tls_pem_callback(char *buf, int size, const void *userdata)
{
#ifdef HAVE_TLS
   const char *prompt = (const char *)userdata;
# if defined(HAVE_WIN32)
   sendit(prompt);
   if (win32_cgets(buf, size) == NULL) {
      buf[0] = 0;
      return 0;
   } else {
      return strlen(buf);
   }
# else
   char *passwd;

   passwd = getpass(prompt);
   bstrncpy(buf, passwd, size);
   return strlen(buf);
# endif
#else
   buf[0] = 0;
   return 0;
#endif
}

#ifdef HAVE_READLINE
#define READLINE_LIBRARY 1
#include "readline.h"
#include "history.h"

static int history_lines_added=0; /* Number of lines added to the history file */

/* Get the first keyword of the line */
static char *
get_first_keyword()
{
   char *ret=NULL;
   int len;
   char *first_space = strchr(rl_line_buffer, ' ');
   if (first_space) {
      len = first_space - rl_line_buffer;
      ret = (char *) malloc((len + 1) * sizeof(char));
      memcpy(ret, rl_line_buffer, len);
      ret[len]=0;
   }
   return ret;
}

/*
 * Return the command before the current point.
 * Set nb to the number of command to skip
 */
static char *
get_previous_keyword(int current_point, int nb)
{
   int i, end=-1, start, inquotes=0;
   char *s=NULL;

   while (nb-- >= 0) {
      /* first we look for a space before the current word */
      for (i = current_point; i >= 0; i--) {
         if (rl_line_buffer[i] == ' ' || rl_line_buffer[i] == '=') {
            break;
         }
      }

      /* find the end of the command */
      for (; i >= 0; i--) {
         if (rl_line_buffer[i] != ' ') {
            end = i;
            break;
         }
      }

      /* no end of string */
      if (end == -1) {
         return NULL;
      }

      /* look for the start of the command */
      for (start = end; start > 0; start--) {
         if (rl_line_buffer[start] == '"') {
            inquotes = !inquotes;
         }
         if ((rl_line_buffer[start - 1] == ' ') && inquotes == 0) {
            break;
         }
         current_point = start;
      }
   }

   s = (char *)malloc(end - start + 2);
   memcpy(s, rl_line_buffer + start, end - start + 1);
   s[end - start + 1] = 0;

   //  printf("=======> %i:%i <%s>\n", start, end, s);

   return s;
}

/* Simple structure that will contain the completion list */
struct ItemList {
   alist list;
};

static ItemList *items = NULL;
void init_items()
{
   if (!items) {
      items = (ItemList*)bmalloc(sizeof(ItemList));  /* bmalloc clears memory */
   } else {
      items->list.destroy();
   }

   items->list.init();
}

/* Match a regexp and add the result to the items list
 * This function is recursive
 */
static void match_kw(regex_t *preg, const char *what, int len, POOLMEM **buf)
{
   int rc, size;
   int nmatch=20;
   regmatch_t pmatch[nmatch];

   if (len <= 0) {
      return;
   }
   rc = regexec(preg, what, nmatch, pmatch,  0);
   if (rc == 0) {
#if 0
      Pmsg1(0, "\n\n%s\n0123456789012345678901234567890123456789\n        10         20         30\n", what);
      Pmsg2(0, "%i-%i\n", pmatch[0].rm_so, pmatch[0].rm_eo);
      Pmsg2(0, "%i-%i\n", pmatch[1].rm_so, pmatch[1].rm_eo);
      Pmsg2(0, "%i-%i\n", pmatch[2].rm_so, pmatch[2].rm_eo);
      Pmsg2(0, "%i-%i\n", pmatch[3].rm_so, pmatch[3].rm_eo);
#endif
      size = pmatch[1].rm_eo - pmatch[1].rm_so;
      *buf = check_pool_memory_size(*buf, size + 1);
      memcpy(*buf, what+pmatch[1].rm_so, size);
      (*buf)[size] = 0;

      items->list.append(bstrdup(*buf));
      /* We search for the next keyword in the line */
      match_kw(preg, what + pmatch[1].rm_eo, len - pmatch[1].rm_eo, buf);
   }
}

/* fill the items list with the output of the help command */
void get_arguments(const char *what)
{
   regex_t preg;
   POOLMEM *buf;
   int rc;
   init_items();

   rc = regcomp(&preg, "(([a-z]+=)|([a-z]+)( |$))", REG_EXTENDED);
   if (rc != 0) {
      return;
   }

   buf = get_pool_memory(PM_MESSAGE);
   UA_sock->fsend(".help item=%s", what);
   while (UA_sock->recv() > 0) {
      strip_trailing_junk(UA_sock->msg);
      match_kw(&preg, UA_sock->msg, UA_sock->msglen, &buf);
   }
   free_pool_memory(buf);
   regfree(&preg);
}

/* retreive a simple list (.pool, .client) and store it into items */
void get_items(const char *what)
{
   init_items();

   UA_sock->fsend("%s", what);
   while (UA_sock->recv() > 0) {
      strip_trailing_junk(UA_sock->msg);
      items->list.append(bstrdup(UA_sock->msg));
   }
}

typedef enum
{
   ITEM_ARG,       /* item with simple list like .jobs */
   ITEM_HELP       /* use help item=xxx and detect all arguments */
} cpl_item_t;

/* Generator function for command completion.  STATE lets us know whether
 * to start from scratch; without any state (i.e. STATE == 0), then we
 * start at the top of the list.
 */
static char *item_generator(const char *text, int state,
                            const char *item, cpl_item_t type)
{
  static int list_index, len;
  char *name;

  /* If this is a new word to complete, initialize now.  This includes
   * saving the length of TEXT for efficiency, and initializing the index
   *  variable to 0.
   */
  if (!state)
  {
     list_index = 0;
     len = strlen(text);
     switch(type) {
     case ITEM_ARG:
        get_items(item);
        break;
     case ITEM_HELP:
        get_arguments(item);
        break;
     }
  }

  /* Return the next name which partially matches from the command list. */
  while (items && list_index < items->list.size())
  {
     name = (char *)items->list[list_index];
     list_index++;

     if (strncmp(name, text, len) == 0) {
        char *ret = (char *) actuallymalloc(strlen(name)+1);
        strcpy(ret, name);
        return ret;
     }
  }

  /* If no names matched, then return NULL. */
  return ((char *)NULL);
}

/* gobal variables for the type and the item to search
 * the readline API doesn' permit to pass user data.
 */
static const char *cpl_item;
static cpl_item_t cpl_type;

static char *cpl_generator(const char *text, int state)
{
   return item_generator(text, state, cpl_item, cpl_type);
}

/* this function is used to not use the default filename completion */
static char *dummy_completion_function(const char *text, int state)
{
   return NULL;
}

struct cpl_keywords_t {
   const char *key;
   const char *cmd;
};

static struct cpl_keywords_t cpl_keywords[] = {
   {"pool=",      ".pool"          },
   {"fileset=",   ".fileset"       },
   {"client=",    ".client"        },
   {"job=",       ".jobs"          },
   {"restore_job=",".jobs type=R"  },
   {"level=",     ".level"         },
   {"storage=",   ".storage"       },
   {"schedule=",  ".schedule"      },
   {"volume=",    ".media"         },
   {"oldvolume=", ".media"         },
   {"volstatus=", ".volstatus"     },
   {"ls",         ".ls"            },
   {"cd",         ".lsdir"         },
   {"mark",       ".ls"            },
   {"m",          ".ls"            },
   {"unmark",     ".lsmark"        },
   {"catalog=",   ".catalogs"      },
   {"actiononpurge=", ".actiononpurge" },
   {"tags=",      ".tags"          },
   {"recylepool=", ".pool"         },
   {"allfrompool=",".pool"         },
   {"nextpool=",   ".pool"         }
};
#define key_size ((int)(sizeof(cpl_keywords)/sizeof(struct cpl_keywords_t)))

/* Attempt to complete on the contents of TEXT.  START and END bound the
 * region of rl_line_buffer that contains the word to complete.  TEXT is
 * the word to complete.  We can use the entire contents of rl_line_buffer
 * in case we want to do some simple parsing.  Return the array of matches,
 * or NULL if there aren't any.
 */
static char **readline_completion(const char *text, int start, int end)
{
   bool found=false;
   char **matches;
   char *s, *cmd;
   matches = (char **)NULL;

   /* If this word is at the start of the line, then it is a command
    * to complete.  Otherwise it is the name of a file in the current
    * directory.
    */
   s = get_previous_keyword(start, 0);
   cmd = get_first_keyword();
   if (s) {
      for (int i=0; i < key_size; i++) {
         if (!strcasecmp(s, cpl_keywords[i].key)) {
            cpl_item = cpl_keywords[i].cmd;
            cpl_type = ITEM_ARG;
            matches = rl_completion_matches(text, cpl_generator);
            found=true;
            break;
         }
      }

      if (!found) {             /* we try to get help with the first command */
         cpl_item = cmd;
         cpl_type = ITEM_HELP;
         /* we don't want to append " " at the end */
         rl_completion_suppress_append=true;
         matches = rl_completion_matches(text, cpl_generator);
      }
      free(s);
   } else {                     /* nothing on the line, display all commands */
      cpl_item = ".help all";
      cpl_type = ITEM_ARG;
      matches = rl_completion_matches(text, cpl_generator);
   }
   if (cmd) {
      free(cmd);
   }
   return (matches);
}

static char eol = '\0';
static int eolcmd(FILE *input, BSOCK *UA_sock)
{
   if ((argc > 1) && (strchr("!$%&'()*+,-/:;<>?[]^`{|}~", argk[1][0]) != NULL)) {
      eol = argk[1][0];
   } else if (argc == 1) {
      eol = '\0';
   } else {
      sendit(_("Illegal separator character.\n"));
   }
   return 1;
}

/*
 * Return 1 if OK
 *        0 if no input
 *       -1 error (must stop)
 */
int
get_cmd(FILE *input, const char *prompt, BSOCK *sock, int sec)
{
   static char *line = NULL;
   static char *next = NULL;
   static int do_history = 0;
   char *command;

   if (line == NULL) {
      do_history = 0;
      rl_catch_signals = 0;              /* do it ourselves */
      /* Here, readline does ***real*** malloc
       * so, be we have to use the real free
       */
      line = readline((char *)prompt);   /* cast needed for old readlines */
      if (!line) {
         return -1;                      /* error return and exit */
      }
      strip_trailing_junk(line);
      command = line;
   } else if (next) {
      command = next + 1;
   } else {
     sendit(_("Command logic problem\n"));
     sock->msglen = 0;
     sock->msg[0] = 0;
     return 0;                  /* No input */
   }

   /*
    * Split "line" into multiple commands separated by the eol character.
    *   Each part is pointed to by "next" until finally it becomes null.
    */
   if (eol == '\0') {
      next = NULL;
   } else {
      next = strchr(command, eol);
      if (next) {
         *next = '\0';
      }
   }
   if (command != line && isatty(fileno(input))) {
      senditf("%s%s\n", prompt, command);

   } else {
      /* Send the intput to the output file if needed */
      if (teein && output != stdout) {
         fputs(prompt, output);
         fputs(command, output);
         fputs("\n", output);
      }
   }

   sock->msglen = pm_strcpy(&sock->msg, command);
   if (sock->msglen) {
      do_history++;
   }

   if (!next) {
      if (do_history) {
        add_history(line);
        /* Count the number of lines added, we use it to truncate the history
         * file correctly
         */
        history_lines_added++;
      }
      actuallyfree(line);       /* allocated by readline() malloc */
      line = NULL;
   }
   return 1;                    /* OK */
}

#else /* no readline, do it ourselves */

#ifdef HAVE_CONIO
static bool bisatty(int fd)
{
   if (no_conio) {
      return false;
   }
   return isatty(fd);
}
#endif

/*
 *   Returns: 1 if data available
 *            0 if timeout
 *           -1 if error
 */
static int
wait_for_data(int fd, int sec)
{
#if defined(HAVE_WIN32)
   return 1;
#else
   for ( ;; ) {
      switch(fd_wait_data(fd, WAIT_READ, sec, 0)) {
      case 0:                         /* timeout */
         return 0;
      case -1:
         if (errno == EINTR || errno == EAGAIN) {
            continue;
         }
         return -1;                  /* error return */
      default:
         return 1;
      }
   }
#endif
}

/*
 * Get next input command from terminal.
 *
 *   Returns: 1 if got input
 *            0 if timeout
 *           -1 if EOF or error
 */
int
get_cmd(FILE *input, const char *prompt, BSOCK *sock, int sec)
{
   int len;
   if (!stop) {
      if (output == stdout || teeout) {
         sendit(prompt);
      }
   }
again:
   switch (wait_for_data(fileno(input), sec)) {
   case 0:
      return 0;                    /* timeout */
   case -1:
      return -1;                   /* error */
   default:
      len = sizeof_pool_memory(sock->msg) - 1;
      if (stop) {
         sleep(1);
         goto again;
      }
#ifdef HAVE_CONIO
      if (bisatty(fileno(input))) {
         input_line(sock->msg, len);
         break;
      }
#endif
#ifdef HAVE_WIN32 /* use special console for input on win32 */
      if (input == stdin) {
         if (win32_cgets(sock->msg, len) == NULL) {
            return -1;
         }
      }
      else
#endif
      if (bfgets(sock->msg, input) == NULL) {
         return -1;

      }
      break;
   }
   if (usrbrk()) {
      clrbrk();
   }
   strip_trailing_junk(sock->msg);
   sock->msglen = strlen(sock->msg);

   /* Send input to log file if needed */
   if (teein && output != stdout) {
      fputs(sock->msg, output);
      fputs("\n", output);
   }

   return 1;
}

#endif /* ! HAVE_READLINE */

/* Routine to return true if user types break */
int usrbrk()
{
   return brkflg;
}

/* Clear break flag */
void clrbrk()
{
   brkflg = 0;
}

/* Interrupt caught here */
static void sigintcatcher(int sig)
{
   brkflg++;
   if (brkflg > 3) {
      terminate_console(sig);
   }
   signal(SIGINT, sigintcatcher);
}

/* Trap Ctl-C */
void trapctlc()
{
   signal(SIGINT, sigintcatcher);
}

#ifdef HAVE_READLINE
static int histfile_size = 100;
#endif

static int console_update_history(const char *histfile)
{
   int ret=0;

#ifdef HAVE_READLINE
/*
 * first, try to truncate the history file, and if it
 * fails, the file is probably not present, and we
 * can use write_history to create it
 */
   int nlines = MAX(histfile_size - history_lines_added, 0);
   if (history_truncate_file(histfile, nlines) == 0) {
      nlines = MIN(histfile_size, history_lines_added);
      ret = append_history(nlines, histfile);
   } else {
      ret = write_history(histfile);
   }
#endif

   return ret;
}

static int console_init_history(const char *histfile, int size)
{
   int ret=0;

#ifdef HAVE_READLINE
   histfile_size = size;
   using_history();
   ret = read_history(histfile);
   /* Tell the completer that we want a complete . */
   rl_completion_entry_function = dummy_completion_function;
   rl_attempted_completion_function = readline_completion;
   rl_filename_completion_desired = 0;
   stifle_history(histfile_size);
#endif

   return ret;
}

static bool select_director(const char *director, const char *console,
                            DIRRES **ret_dir, CONRES **ret_cons)
{
   int numcon=0, numdir=0;
   int i=0, item=0;
   BSOCK *UA_sock;
   DIRRES *dir = NULL;
   CONRES *cons = NULL;

   *ret_cons = NULL;
   *ret_dir = NULL;

   LockRes();
   numdir = 0;
   foreach_res(dir, R_DIRECTOR) {
      numdir++;
   }
   numcon = 0;
   foreach_res(cons, R_CONSOLE) {
      numcon++;
   }
   UnlockRes();

   if (numdir == 1) {           /* No choose */
      dir = (DIRRES *)GetNextRes(R_DIRECTOR, NULL);
   }

   if (director) {    /* Command line choice overwrite the no choose option */
      LockRes();
      foreach_res(dir, R_DIRECTOR) {
         if (bstrcasecmp(dir->hdr.name, director)) {
            break;
         }
      }
      UnlockRes();
      if (!dir) {               /* Can't find Director used as argument */
         senditf(_("Can't find %s in Director list\n"), director);
         return 0;
      }
   }

   if (dir == NULL) {               /* prompt for director */
      UA_sock = new_bsock();
try_again:
      sendit(_("Available Directors:\n"));
      LockRes();
      numdir = 0;
      foreach_res(dir, R_DIRECTOR) {
         senditf( _("%2d:  %s at %s:%d\n"), 1+numdir++, dir->hdr.name,
                  dir->address, dir->DIRport);
      }
      UnlockRes();
      if (get_cmd(stdin, _("Select Director by entering a number: "),
                  UA_sock, 600) < 0)
      {
         (void)WSACleanup();               /* Cleanup Windows sockets */
         return 0;
      }
      if (!is_a_number(UA_sock->msg)) {
         senditf(_("%s is not a number. You must enter a number between "
                   "1 and %d\n"),
                 UA_sock->msg, numdir);
         goto try_again;
      }
      item = atoi(UA_sock->msg);
      if (item < 0 || item > numdir) {
         senditf(_("You must enter a number between 1 and %d\n"), numdir);
         goto try_again;
      }
      free_bsock(UA_sock);
      LockRes();
      for (i=0; i<item; i++) {
         dir = (DIRRES *)GetNextRes(R_DIRECTOR, (RES *)dir);
      }
      UnlockRes();
   }
   LockRes();
   /* Look for a console linked to this director */
   for (i=0; i<numcon; i++) {
      cons = (CONRES *)GetNextRes(R_CONSOLE, (RES *)cons);
      if (console) {
         if (strcmp(cons->hdr.name, console) == 0) {
            break;
         }
      } else if (cons->director && strcasecmp(cons->director, dir->hdr.name) == 0) {
         break;
      }
      if (i == (numcon - 1)) {
         cons = NULL;
      }
   }

   if (cons == NULL && console != NULL) {
      UnlockRes();
      senditf(_("Can't find %s in Console list\n"), console);
      return 0;
   }

   /* Look for the first non-linked console */
   if (cons == NULL) {
      for (i=0; i<numcon; i++) {
         cons = (CONRES *)GetNextRes(R_CONSOLE, (RES *)cons);
         if (cons->director == NULL) {
            break;
         }
         if (i == (numcon - 1)) {
            cons = NULL;
         }
      }
   }

   /* If no console, take first one */
   if (!cons) {
      cons = (CONRES *)GetNextRes(R_CONSOLE, (RES *)NULL);
   }
   UnlockRes();

   *ret_dir = dir;
   *ret_cons = cons;

   return 1;
}

/*********************************************************************
 *
 *         Main Bacula Console -- User Interface Program
 *
 */
int main(int argc, char *argv[])
{
   int ch;
   char *director = NULL;
   char *console = NULL;
   bool list_directors=false, list_consoles=false;
   bool no_signals = false;
   bool test_config = false;
   utime_t heart_beat;

   setlocale(LC_ALL, "");
   bindtextdomain("bacula", LOCALEDIR);
   textdomain("bacula");

   init_stack_dump();
   lmgr_init_thread();
   my_name_is(argc, argv, "bconsole");
   init_msg(NULL, NULL);
   working_directory = "/tmp";
   args = get_pool_memory(PM_FNAME);

   while ((ch = getopt(argc, argv, "D:lc:d:nstu:?C:L")) != -1) {
      switch (ch) {
      case 'D':                    /* Director */
         if (director) {
            free(director);
         }
         director = bstrdup(optarg);
         break;

      case 'C':                    /* Console */
         if (console) {
            free(console);
         }
         console = bstrdup(optarg);
         break;

      case 'L':                    /* Console */
         list_consoles = true;
         test_config = true;
         break;

      case 'l':
         list_directors = true;
         test_config = true;
         break;

      case 'c':                    /* configuration file */
         if (configfile != NULL) {
            free(configfile);
         }
         configfile = bstrdup(optarg);
         break;

      case 'd':
         if (*optarg == 't') {
            dbg_timestamp = true;
         } else {
            debug_level = atoi(optarg);
            if (debug_level <= 0) {
               debug_level = 1;
            }
         }
         break;

      case 'n':                    /* no conio */
         no_conio = true;
         break;

      case 's':                    /* turn off signals */
         no_signals = true;
         break;

      case 't':
         test_config = true;
         break;

      case 'u':
         timeout = atoi(optarg);
         break;

      case '?':
      default:
         usage();
         exit(1);
      }
   }
   argc -= optind;
   argv += optind;

   if (!no_signals) {
      init_signals(terminate_console);
   }


#if !defined(HAVE_WIN32)
   /* Override Bacula default signals */
   signal(SIGQUIT, SIG_IGN);
   signal(SIGTSTP, got_sigstop);
   signal(SIGCONT, got_sigcontinue);
   signal(SIGTTIN, got_sigtin);
   signal(SIGTTOU, got_sigtout);
   trapctlc();
#endif

   OSDependentInit();

   if (argc) {
      usage();
      exit(1);
   }

   if (configfile == NULL) {
      configfile = bstrdup(CONFIG_FILE);
   }

   config = New(CONFIG());
   parse_cons_config(config, configfile, M_ERROR_TERM);

   /* TODO: Get the FIPS settings from the configuration file */
   if (init_crypto() != 0) {
      Emsg0(M_ERROR_TERM, 0, _("Cryptography library initialization failed.\n"));
   }

   if (!check_resources()) {
      Emsg1(M_ERROR_TERM, 0, _("Please correct configuration file: %s\n"), configfile);
   }

   if (crypto_check_fips(require_fips) < 0) {
      Emsg0(M_ERROR_TERM, 0, _("Enable to set FIPS mode\n"));
   }

   if (!no_conio) {
      con_init(stdin);
   }

   if (list_directors) {
      LockRes();
      foreach_res(dir, R_DIRECTOR) {
         senditf("%s\n", dir->hdr.name);
      }
      UnlockRes();
   }

   if (list_consoles) {
      LockRes();
      foreach_res(cons, R_CONSOLE) {
         senditf("%s\n", cons->hdr.name);
      }
      UnlockRes();
   }

   if (test_config) {
      terminate_console(0);
      exit(0);
   }

   (void)WSA_Init();                        /* Initialize Windows sockets */

   start_watchdog();                        /* Start socket watchdog */

   if (!select_director(director, console, &dir, &cons)) {
      terminate_console(0);
      return 1;
   }

   senditf(_("Connecting to Director %s:%d\n"), dir->address,dir->DIRport);

   char buf[1024];
   /* Initialize Console TLS context */
   if (cons && cons->tls_enable) {
      /* Generate passphrase prompt */
      bsnprintf(buf, sizeof(buf), "Passphrase for Console \"%s\" TLS private key: ", cons->hdr.name);

      /* Initialize TLS context:
       * Args: CA certfile, CA certdir, Certfile, Keyfile,
       * Keyfile PEM Callback, Keyfile CB Userdata, DHfile, Verify Peer
       */
      cons->tls_ctx = new_tls_context(cons->tls_ca_certfile,
         cons->tls_ca_certdir, cons->tls_certfile,
         cons->tls_keyfile, tls_pem_callback, &buf, NULL, true);

      if (!cons->tls_ctx) {
         senditf(_("Failed to initialize TLS context for Console \"%s\".\n"),
            cons->hdr.name);
         terminate_console(0);
         return 1;
      }
   }
   /* Initialize a TLS-PSK context (even if a TLS context already exists) */
   if (cons) {
      cons->psk_ctx = new_psk_context(cons->password);
      /* In this case, we have TLS Require=Yes and TLS not setup and no PSK */
      if (cons->tls_enable == false && cons->tls_require && cons->psk_ctx == NULL) {
         senditf(_("Failed to initialize TLS PSK context for Console \"%s\".\n"),
                 cons->hdr.name);
         terminate_console(0);
         return 1;
      }
   }

   /* Initialize Director TLS context */
   if (dir->tls_enable) {
      /* Generate passphrase prompt */
      bsnprintf(buf, sizeof(buf), "Passphrase for Director \"%s\" TLS private key: ", dir->hdr.name);

      /* Initialize TLS context:
       * Args: CA certfile, CA certdir, Certfile, Keyfile,
       * Keyfile PEM Callback, Keyfile CB Userdata, DHfile, Verify Peer */
      dir->tls_ctx = new_tls_context(dir->tls_ca_certfile,
         dir->tls_ca_certdir, dir->tls_certfile,

         dir->tls_keyfile, tls_pem_callback, &buf, NULL, true);

      if (!dir->tls_ctx) {
         senditf(_("Failed to initialize TLS context for Director \"%s\".\n"),
            dir->hdr.name);
         terminate_console(0);
         return 1;
      }
   }
   /* Initialize a TLS-PSK context (even if a TLS context already exists) */
   dir->psk_ctx = new_psk_context(dir->password);
   /* In this case, we have TLS Require=Yes and TLS not setup and no PSK */
   if (dir->tls_enable == false && dir->tls_require && dir->psk_ctx == NULL) {
      senditf(_("Failed to initialize TLS PSK context for Director \"%s\".\n"),
              dir->hdr.name);
      terminate_console(0);
      return 1;
   }

   if (dir->heartbeat_interval) {
      heart_beat = dir->heartbeat_interval;
   } else if (cons) {
      heart_beat = cons->heartbeat_interval;
   } else {
      heart_beat = 0;
   }
   if (!UA_sock) {
      UA_sock = new_bsock();
   }
   if (!UA_sock->connect(NULL, 5, 15, heart_beat, "Director daemon", dir->address,
                          NULL, dir->DIRport, 0)) {
      UA_sock->destroy();
      UA_sock = NULL;
      terminate_console(0);
      return 1;
   }

   /* If cons==NULL, default console will be used */
   if (!authenticate_director(UA_sock, dir, cons)) {
      terminate_console(0);
      return 1;
   }

   Dmsg0(40, "Opened connection with Director daemon\n");

   sendit(_("Enter a period to cancel a command.\n"));

   /* Read/Update history file if HOME exists */
   POOL_MEM history_file;
   int hist_file_size=0;

   /* Run commands in ~/.bconsolerc if any */
   char *env = getenv("HOME");
   if (env) {
      FILE *fd;
      pm_strcpy(&UA_sock->msg, env);
      pm_strcat(&UA_sock->msg, "/.bconsolerc");
      fd = bfopen(UA_sock->msg, "rb");
      if (fd) {
         read_and_process_input(fd, UA_sock);
         fclose(fd);
      }

   }

   hist_file_size = dir->hist_file_size;
   if (dir->hist_file) {
      pm_strcpy(history_file, dir->hist_file);
      console_init_history(history_file.c_str(), hist_file_size);

   } else if (env) {
      pm_strcpy(history_file, env);
      pm_strcat(history_file, "/.bconsole_history");
      console_init_history(history_file.c_str(), hist_file_size);
   }

   read_and_process_input(stdin, UA_sock);

   if (UA_sock) {
      UA_sock->signal(BNET_TERMINATE); /* send EOF */
      UA_sock->close();
   }

   if (env) {
      console_update_history(history_file.c_str());
   }

   terminate_console(0);
   return 0;
}

/* Cleanup and then exit */
static void terminate_console(int sig)
{

   static bool already_here = false;

   if (already_here) {                /* avoid recursive temination problems */
      exit(1);
   }
   already_here = true;
   stop_watchdog();
   delete(config);
   config = NULL;
   cleanup_crypto();
   free(res_head);
   res_head = NULL;
   free_pool_memory(args);
#if defined(HAVE_CONIO)
   if (!no_conio) {
      con_term();
   }
#elif defined(HAVE_READLINE)
   rl_cleanup_after_signal();
#else /* !HAVE_CONIO && !HAVE_READLINE */
#endif
   (void)WSACleanup();               /* Cleanup Windows sockets */
   lmgr_cleanup_main();

   if (sig != 0) {
      exit(1);
   }
   return;
}

/*
 * Make a quick check to see that we have all the
 * resources needed.
 */
static int check_resources()
{
   bool OK = true;
   DIRRES *director;
   bool tls_needed;

   LockRes();

   numdir = 0;
   foreach_res(director, R_DIRECTOR) {

      numdir++;
      /* tls_require implies tls_enable */
      if (director->tls_require) {
         if (have_tls) {
            if (director->tls_ca_certfile || director->tls_ca_certdir) {
               director->tls_enable = true;
            }
         } else {
            Jmsg(NULL, M_FATAL, 0, _("TLS required but not configured in Bacula.\n"));
            OK = false;
            continue;
         }
      }
      tls_needed = director->tls_enable || director->tls_authenticate;

      if ((!director->tls_ca_certfile && !director->tls_ca_certdir) && tls_needed) {
         Emsg2(M_FATAL, 0, _("Neither \"TLS CA Certificate\""
                             " or \"TLS CA Certificate Dir\" are defined for Director \"%s\" in %s."
                             " At least one CA certificate store is required.\n"),
                             director->hdr.name, configfile);
         OK = false;
      }
      if (director->require_fips) {
         require_fips = 1;
      }
   }

   if (numdir == 0) {
      Emsg1(M_FATAL, 0, _("No Director resource defined in %s\n"
                          "Without that I don't how to speak to the Director :-(\n"), configfile);
      OK = false;
   }

   CONRES *cons;
   /* Loop over Consoles */
   foreach_res(cons, R_CONSOLE) {
      /* tls_require implies tls_enable */
      if (cons->tls_require) {
         if (have_tls) {
            if (cons->tls_ca_certfile || cons->tls_ca_certdir) {
               cons->tls_enable = true;
            }
         } else {
            Jmsg(NULL, M_FATAL, 0, _("TLS required but not configured in Bacula.\n"));
            OK = false;
            continue;
         }
      }
      tls_needed = cons->tls_enable || cons->tls_authenticate;
      if ((!cons->tls_ca_certfile && !cons->tls_ca_certdir) && tls_needed) {
         Emsg2(M_FATAL, 0, _("Neither \"TLS CA Certificate\""
                             " or \"TLS CA Certificate Dir\" are defined for Console \"%s\" in %s.\n"),
                             cons->hdr.name, configfile);
         OK = false;
      }
      if (cons->require_fips) {
         require_fips = 1;
      }
   }

   UnlockRes();

   return OK;
}

/* @version */
static int versioncmd(FILE *input, BSOCK *UA_sock)
{
   senditf("Version: " VERSION " (" BDATE ") %s %s %s\n", /* TODO: Add FIPS setting here */
           HOST_OS, DISTNAME, DISTVER);
   if (crypto_get_fips()) {
      senditf("Crypto: fips=%s crypto=%s\n", crypto_get_fips_enabled(), crypto_get_version());
   }
   return 1;
}

/* @input <input-filename> */
static int inputcmd(FILE *input, BSOCK *UA_sock)
{
   FILE *fd;

   if (argc > 2) {
      sendit(_("Too many arguments on input command.\n"));
      return 1;
   }
   if (argc == 1) {
      sendit(_("First argument to input command must be a filename.\n"));
      return 1;
   }
   fd = bfopen(argk[1], "rb");
   if (!fd) {
      berrno be;
      senditf(_("Cannot open file %s for input. ERR=%s\n"),
         argk[1], be.bstrerror());
      return 1;
   }
   read_and_process_input(fd, UA_sock);
   fclose(fd);
   return 1;
}

/* @tall <output-filename> */
/* Send input/output to both terminal and specified file */
static int teeallcmd(FILE *input, BSOCK *UA_sock)
{
   teeout = true;
   teein = true;
   return do_outputcmd(input, UA_sock);
}

/* @tee <output-filename> */
/* Send output to both terminal and specified file */
static int teecmd(FILE *input, BSOCK *UA_sock)
{
   teeout = true;
   teein = false;
   return do_outputcmd(input, UA_sock);
}

/* @output <output-filename> */
/* Send output to specified "file" */
static int outputcmd(FILE *input, BSOCK *UA_sock)
{
   teeout = false;
   teein  = false;
   return do_outputcmd(input, UA_sock);
}


static int do_outputcmd(FILE *input, BSOCK *UA_sock)
{
   FILE *fd;
   const char *mode = "a+b";

   if (argc > 3) {
      sendit(_("Too many arguments on output/tee command.\n"));
      return 1;
   }
   if (argc == 1) {
      if (output != stdout) {
         fclose(output);
         output = stdout;
         teeout = false;
         teein = false;
      }
      return 1;
   }
   if (argc == 3) {
      mode = argk[2];
   }
   fd = bfopen(argk[1], mode);
   if (!fd) {
      berrno be;
      senditf(_("Cannot open file %s for output. ERR=%s\n"),
         argk[1], be.bstrerror(errno));
      return 1;
   }
   output = fd;
   return 1;
}

/*
 * @exec "some-command" [wait-seconds]
*/
static int execcmd(FILE *input, BSOCK *UA_sock)
{
   BPIPE *bpipe;
   char line[5000];
   int stat;
   int wait = 0;
   char *cmd;

   if (argc > 3) {
      sendit(_("Too many arguments. Enclose command in double quotes.\n"));
      return 1;
   }

   /* old syntax */
   if (argc == 3) {
      wait = atoi(argk[2]);
   }
   cmd = argk[1];

   /* handle cmd=XXXX and wait=XXXX */
   for (int i=1; i<argc; i++) {
      if (strcmp(argk[i], "cmd") == 0) {
         cmd = argv[i];
      }
      if (strcmp(argk[i], "wait") == 0) {
         wait = atoi(argv[i]);
      }
   }

   bpipe = open_bpipe(cmd, wait, "r");
   if (!bpipe) {
      berrno be;
      senditf(_("Cannot popen(\"%s\", \"r\"): ERR=%s\n"),
         argk[1], be.bstrerror(errno));
      return 1;
   }

   while (fgets(line, sizeof(line), bpipe->rfd)) {
      senditf("%s", line);
   }
   stat = close_bpipe(bpipe);
   if (stat != 0) {
      berrno be;
      be.set_errno(stat);
      senditf(_("@exec error: ERR=%s\n"), be.bstrerror());
   }
   return 1;
}

/* Encode a string with a simple algorithm */
static int encodecmd(FILE *input, BSOCK *UA_sock)
{
   int   len;
   int   salt;
   char  pepper;

   if (argc == 2) {
      POOLMEM *buf = get_pool_memory(PM_NAME);
      POOLMEM *buf2 = get_pool_memory(PM_NAME);
      char *str = argk[1];

      salt = rand() % 1000;    /* Display max 3 digits */
      pepper = salt % 256;     /* salt for password itself */

      if (argv[1]) {
         if (strcmp(argk[1], "string") == 0) {
            str = argv[1];
         } else {
            senditf("Unable to encode the given string \"%s\". Try to use @encode string=\"yourstring\"\n", argk[1]);
            return 1;
         }
      }

      len = strlen(str);

      if (len > MAX_NAME_LENGTH) {
         sendit(_("The String to encode is too long\n"));
         return 1;
      }

      Mmsg(buf, "%03d:%03d:%s", salt, len ^ salt, str);

      for(char *p = buf + 8 ; *p ; p++) {
         *p = *p ^ pepper;
      }

      buf2 = check_pool_memory_size(buf2, len*3);
      bin_to_base64(buf2, sizeof_pool_memory(buf2),
                    buf, 8 + len + 1, 1);

      sendit(buf2);

      free_pool_memory(buf);
      free_pool_memory(buf2);
      sendit("\n");
   }

   return 1;
}

/* @echo xxx yyy */
static int echocmd(FILE *input, BSOCK *UA_sock)
{
   for (int i=1; i < argc; i++) {
      senditf("%s ", argk[i]);
   }
   sendit("\n");
   return 1;
}

/* @quit */
static int quitcmd(FILE *input, BSOCK *UA_sock)
{
   return 0;
}

/* @help */
static int helpcmd(FILE *input, BSOCK *UA_sock)
{
   int i;
   for (i=0; i<comsize; i++) {
      senditf("  %-10s %s\n", commands[i].key, commands[i].help);
   }
   return 1;
}


/* @sleep secs */
static int sleepcmd(FILE *input, BSOCK *UA_sock)
{
   if (argc > 1) {
      sleep(atoi(argk[1]));
   }
   return 1;
}

/* @putfile key /path/to/file
 *
 * The Key parameter is needed to use the file on the director side.
 */
static int putfilecmd(FILE *input, BSOCK *UA_sock)
{
   int i = 0;
   const char *key = "putfile";
   const char *fname;
   FILE *fp;

   if (argc != 3) {
      sendit("Usage: @putfile key file\n");
      return 1;
   }

   key = argk[1];
   fname = argk[2];

   if (!key || !fname) {
      senditf("Syntax error in @putfile command\n");
      return 1;
   }

   fp = bfopen(fname, "r");
   if (!fp) {
      berrno be;
      senditf("Unable to open %s. ERR=%s\n", fname, be.bstrerror(errno));
      return 1;
   }

   UA_sock->fsend(".putfile key=\"%s\"", key);

   /* Just read the file and send it to the director */
   while (!feof(fp)) {
      i = fread(UA_sock->msg, 1, sizeof_pool_memory(UA_sock->msg) - 1, fp);
      if (i > 0) {
         UA_sock->msg[i] = 0;
         UA_sock->msglen = i;
         UA_sock->send();
      }
   }

   UA_sock->signal(BNET_EOD);
   fclose(fp);

   /* Get the file name associated */
   while (UA_sock->recv() > 0) {
      senditf("%s", UA_sock->msg);
   }
   return 1;
}

/* @time */
static int timecmd(FILE *input, BSOCK *UA_sock)
{
   char sdt[50];
   time_t ttime = time(NULL);
   struct tm tm;
   (void)localtime_r(&ttime, &tm);
   strftime(sdt, sizeof(sdt), "%d-%b-%Y %H:%M:%S", &tm);
   sendit("\n");
   return 1;
}

/*
 * Send a line to the output file and or the terminal
 */
void senditf(const char *fmt,...)
{
   char buf[3000];
   va_list arg_ptr;

   va_start(arg_ptr, fmt);
   bvsnprintf(buf, sizeof(buf), (char *)fmt, arg_ptr);
   va_end(arg_ptr);
   sendit(buf);
}

void sendit(const char *buf)
{
#ifdef CONIO_FIX
   char obuf[3000];
   if (output == stdout || teeout) {
      const char *p, *q;
      /*
       * Here, we convert every \n into \r\n because the
       *  terminal is in raw mode when we are using
       *  conio.
       */
      for (p=q=buf; (p=strchr(q, '\n')); ) {
         int len = p - q;
         if (len > 0) {
            memcpy(obuf, q, len);
         }
         memcpy(obuf+len, "\r\n", 3);
         q = ++p;                    /* point after \n */
         fputs(obuf, output);
      }
      if (*q) {
         fputs(q, output);
      }
      fflush(output);
   }
   if (output != stdout) {
      fputs(buf, output);
   }
#else

   fputs(buf, output);
   fflush(output);
   if (teeout) {
      fputs(buf, stdout);
      fflush(stdout);
   }
#endif
}