/*
**  Copyright 1998-2003 University of Illinois Board of Trustees
**  Copyright 1998-2003 Mark D. Roth
**  All rights reserved.
**
**  output.c - libtar code to print out tar header blocks
**
**  Mark D. Roth <roth@uiuc.edu>
**  Campus Information Technologies and Educational Services
**  University of Illinois at Urbana-Champaign
*/

#include <libtarint/internal.h>

#include <stdio.h>
#include <stdlib.h>

#if !defined(_WIN32) || defined(__CYGWIN__)
# include <pwd.h>
# include <grp.h>
#endif

#include <time.h>
#include <limits.h>

#ifdef STDC_HEADERS
# include <string.h>
#endif


#ifndef _POSIX_LOGIN_NAME_MAX
# define _POSIX_LOGIN_NAME_MAX  9
#endif


void
th_print(TAR *t)
{
  puts("\nPrinting tar header:");
  printf("  name     = \"%.100s\"\n", t->th_buf.name);
  printf("  mode     = \"%.8s\"\n", t->th_buf.mode);
  printf("  uid      = \"%.8s\"\n", t->th_buf.uid);
  printf("  gid      = \"%.8s\"\n", t->th_buf.gid);
  printf("  size     = \"%.12s\"\n", t->th_buf.size);
  printf("  mtime    = \"%.12s\"\n", t->th_buf.mtime);
  printf("  chksum   = \"%.8s\"\n", t->th_buf.chksum);
  printf("  typeflag = \'%c\'\n", t->th_buf.typeflag);
  printf("  linkname = \"%.100s\"\n", t->th_buf.linkname);
  printf("  magic    = \"%.6s\"\n", t->th_buf.magic);
  /*printf("  version  = \"%.2s\"\n", t->th_buf.version); */
  printf("  version[0] = \'%c\',version[1] = \'%c\'\n",
         t->th_buf.version[0], t->th_buf.version[1]);
  printf("  uname    = \"%.32s\"\n", t->th_buf.uname);
  printf("  gname    = \"%.32s\"\n", t->th_buf.gname);
  printf("  devmajor = \"%.8s\"\n", t->th_buf.devmajor);
  printf("  devminor = \"%.8s\"\n", t->th_buf.devminor);
  printf("  prefix   = \"%.155s\"\n", t->th_buf.prefix);
  printf("  padding  = \"%.12s\"\n", t->th_buf.padding);
  printf("  gnu_longname = \"%s\"\n",
         (t->th_buf.gnu_longname ? t->th_buf.gnu_longname : "[NULL]"));
  printf("  gnu_longlink = \"%s\"\n",
         (t->th_buf.gnu_longlink ? t->th_buf.gnu_longlink : "[NULL]"));
}


void
th_print_long_ls(TAR *t)
{
  char modestring[12];
#if !defined(_WIN32) || defined(__CYGWIN__)
  struct passwd *pw;
  struct group *gr;
#endif
  uid_t uid;
  gid_t gid;
  char username[_POSIX_LOGIN_NAME_MAX];
  char groupname[_POSIX_LOGIN_NAME_MAX];
  time_t mtime;
  struct tm *mtm;
  char *pathname;

#ifdef HAVE_STRFTIME
  char timebuf[18];
#else
  const char *months[] = {
    "Jan", "Feb", "Mar", "Apr", "May", "Jun",
    "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
  };
#endif

  uid = th_get_uid(t);
#if !defined(_WIN32) || defined(__CYGWIN__)
  pw = getpwuid(uid);
  if (pw != NULL)
    strlcpy(username, pw->pw_name, sizeof(username));
  else
#endif
    snprintf(username, sizeof(username), "%d", (int)uid);
  gid = th_get_gid(t);
#if !defined(_WIN32) || defined(__CYGWIN__)
  gr = getgrgid(gid);
  if (gr != NULL)
    strlcpy(groupname, gr->gr_name, sizeof(groupname));
  else
#endif
    snprintf(groupname, sizeof(groupname), "%d", (int)gid);
    
  strmode(th_get_mode(t), modestring);
  printf("%.10s %-8.8s %-8.8s ", modestring, username, groupname);

#if !defined(_WIN32) || defined(__CYGWIN__)
  if (TH_ISCHR(t) || TH_ISBLK(t))
    printf(" %3d, %3d ", th_get_devmajor(t), th_get_devminor(t));
  else
#endif
    printf("%9ld ", (long)th_get_size(t));

  mtime = th_get_mtime(t);
  mtm = localtime(&mtime);
#ifdef HAVE_STRFTIME
  strftime(timebuf, sizeof(timebuf), "%b %d %H:%M %Y", mtm);
  printf("%s", timebuf);
#else
  printf("%.3s %2d %2d:%02d %4d",
         months[mtm->tm_mon],
         mtm->tm_mday, mtm->tm_hour, mtm->tm_min, mtm->tm_year + 1900);
#endif

  pathname = th_get_pathname(t);
  if (pathname)
    {
    printf(" %s", pathname);
    free(pathname);
    }

#if !defined(_WIN32) || defined(__CYGWIN__)
  if (TH_ISSYM(t) || TH_ISLNK(t))
  {
    if (TH_ISSYM(t))
      printf(" -> ");
    else
      printf(" link to ");
    if ((t->options & TAR_GNU) && t->th_buf.gnu_longlink != NULL)
      printf("%s", t->th_buf.gnu_longlink);
    else
      printf("%.100s", t->th_buf.linkname);
  }
#endif

  putchar('\n');
}