
/* MODULE							HTVMSUtil.c
**		VMS Utility Routines
**
** AUTHORS:
**	MD	Mark Donszelmann    duns@vxdeop.cern.ch
**
** HISTORY:
**	14 Nov 93  MD	Written
**
** BUGS:
**
**
*/

#include "../config.h"

/* Avoid __utc_stat routine */
#if defined(__DECC) && (__VMS_VER >= 70000000)
#define _VMS_V6_SOURCE
#endif

#include "HTUtils.h"
#include "tcp.h"
#include "HTFormat.h"
#include "HTStream.h"

#ifdef __GNUC__
#include <stat.h>
#endif

#include "HTVMSUtils.h"
#include <descrip.h>
#include <lib$routines.h>
#include <starlet.h>
#include <rmsdef.h>
#include "../libnut/str-tools.h"

#ifndef DISABLE_TRACE
extern int www2Trace;
#endif

#define FREE(x) if (x) {free(x); x = NULL;}

#define INFINITY 512            /* File name length @@ FIXME */

PUBLIC BOOL HTVMSFileVersions = FALSE; /* Include version numbers in listing? */

typedef struct {
   unsigned long BufferLength : 16;
   unsigned long ItemCode : 16;
   unsigned long BufferAddress : 32;
   unsigned long ReturnLengthAddress : 32;
} ItemStruct;

extern WWW_CONST char * HTHostName NOPARAMS;


/* PUBLIC							HTVMS_wwwName()
**		CONVERTS VMS Name into WWW Name 
** ON ENTRY:
**	vmsname		VMS file specification (NO NODE)
**
** ON EXIT:
**	returns 	www file specification
**
** EXAMPLES:
**	vmsname				wwwname
**	DISK$USER 			disk$user
**	DISK$USER: 			/disk$user/
**	DISK$USER:[DUNS] 		/disk$user/duns
**	DISK$USER:[DUNS.ECHO] 		/disk$user/duns/echo
**	[DUNS] 				duns
**	[DUNS.ECHO] 			duns/echo
**	[DUNS.ECHO.-.TRANS] 		duns/echo/../trans
**	[DUNS.ECHO.--.TRANS] 		duns/echo/../../trans
**	[.DUNS] 			duns
**	[.DUNS.ECHO] 			duns/echo
**	[.DUNS.ECHO]TEST.COM 		duns/echo/test.com 
**	TEST.COM 			test.com
**
**	
*/
PUBLIC char *HTVMS_wwwName ARGS1(char *, vmsname)
{
static char wwwname[256];
char *src, *dst;
int dir;
   dst = wwwname;
   src = vmsname;
   dir = 0;
   if (strchr(src, ':'))
      *(dst++) = '/';
   for ( ; *src; src++) {
      switch (*src) {
         case ':':  *(dst++) = '/';
		    break;
         case '-': if (dir) {
	 	      if ((*(src-1)=='[' || *(src-1)=='.' || *(src-1)=='-') && 
		          (*(src+1)=='.' || *(src+1)=='-')) {
		          *(dst++) = '/';
                          *(dst++) = '.'; 
                          *(dst++) = '.';
		      } else {
		          *(dst++) = '-';
		      }
		   } else {
		      if (*(src-1) == ']')
			  *(dst++) = '/';
		      *(dst++) = '-';
		   }
                   break;
         case '.': if (dir) {
                      if (*(src-1) != '[')
			  *(dst++) = '/';
                   } else {
		      if (*(src-1) == ']')
			  *(dst++) = '/';
                      *(dst++) = '.';
		   }
                   break;
         case '[': dir = 1;
		   break;
         case ']': dir = 0;
		   break;
         default:  if (*(src-1) == ']')
		       *(dst++) = '/';
                   *(dst++) = *src; 
                   break;
      }
   }
   *(dst++) = '\0';
   return(wwwname);
}


/* PUBLIC							HTVMS_name()
**		CONVERTS WWW name into a VMS name
** ON ENTRY:
**	nn		Node Name (optional)
**	fn		WWW file name
**
** ON EXIT:
**	returns 	vms file specification
**
** Bug:	Returns pointer to static -- non-reentrant
*/
PUBLIC char *HTVMS_name ARGS2(WWW_CONST char *, nn, WWW_CONST char *, fn)
{
/*	We try converting the filename into Files-11 syntax.  That is, we assume
**	first that the file is, like us, on a VMS node.  We try remote
**	(or local) DECnet access. Files-11, VMS, VAX and DECnet
**	are trademarks of Digital Equipment Corporation. 
**	The node is assumed to be local if the hostname WITHOUT DOMAIN
**	matches the local one. @@@
*/
    static char vmsname[INFINITY];	/* Returned */
    char *filename = (char*)malloc(strlen(fn)+1);
#if !defined(VAXC)
    char *nodename = (char*)malloc(strlen(nn)+2+1);	/* Copies to hack */
#else
    /* VAXC strlen does not accept a NULL pointer */
    char *nodename = (nn == NULL) ? (char*)malloc(2+1) :
        (char*)malloc(strlen(nn)+2+1);  /* Copies to hack */
#endif /* BSN */
    char *second;		/* 2nd slash */
    char *last;			/* last slash */
    
    char *hostname = (char *)HTHostName();

    if (!filename || !nodename) outofmem(__FILE__, "HTVMSname");
    strcpy(filename, fn);
    strcpy(nodename, "");	/* On same node? Yes if node names match */
    if (nn && strncmp(nn, "localhost", 9)) {
        char *p, *q;
        for (p = hostname, q = (char *)nn;
	     *p && *p!='.' && *q && *q!='.'; p++, q++) {
	    if (TOUPPER(*p) != TOUPPER(*q)) {
	        strcpy(nodename, nn);
		q = strchr(nodename, '.');	/* Mismatch */
		if (q)
		    *q=0;			/* Chop domain */
		strcat(nodename, "::");		/* Try decnet anyway */
		break;
	    }
	}
    }

    second = strchr(filename+1, '/');		/* 2nd slash */
    last = strrchr(filename, '/');		/* Last slash */
        
    if (!second) {				/* Only one slash */
	sprintf(vmsname, "%s%s", nodename, filename + 1);
    } else if(second == last) {		/* Exactly two slashes */
	*second = 0;		/* Split filename from disk */
	sprintf(vmsname, "%s%s:%s", nodename, filename+1, second+1);
	*second = '/';	/* Restore */
    } else { 				/* More than two slashes */
	char *p;
	*second = 0;		/* Split disk from directories */
	*last = 0;		/* Split dir from filename */
	sprintf(vmsname, "%s%s:[%s]%s",
		nodename, filename+1, second+1, last+1);
	*second = *last = '/';	/* restore filename */
	for (p = strchr(vmsname, '['); *p != ']'; p++)
	    if (*p == '/')
		 *p = '.';	/* Convert dir sep. to dots */
    }
    FREE(nodename);
    FREE(filename);
    return vmsname;
}

/*
**	The code below is for directory browsing by VMS Curses clients.
**	It is based on the newer WWWLib's HTDirBrw.c. - Foteos Macrides
*/
PUBLIC int HTStat ARGS2(WWW_CONST char *, filename, stat_t *, info)
{
   /* 
      The following stuff does not work in VMS with a normal stat...
      -->   /disk$user/duns/www if www is a directory
		is statted like: 	/disk$user/duns/www.dir 
		after a normal stat has failed
      -->   /disk$user/duns	if duns is a toplevel directory
		is statted like:	/disk$user/000000/duns.dir
      -->   /disk$user since disk$user is a device
		is statted like:	/disk$user/000000/000000.dir
      -->   /			
		searches all devices, no solution yet...
      -->   /vxcern!/disk$cr/wwwteam/login.com
		is not statted but granted with fake information...
   */
int Result;
int Len;
char *Ptr, *Ptr2;
char Name[256];

   /* Try normal stat... */
   Result = stat((char *)filename, info);
   if (Result == 0)
      return(Result);

   /* Make local copy */
   strcpy(Name, filename);

   /* Failed, so do device search in case root is requested */
   if (!strcmp(Name, "/")) {  /* Root requested */
      return(-1);
   }
   
   /* Failed so this might be a directory, add '.dir' */
   Len = strlen(Name);
   if (Name[Len-1] == '/')
      Name[Len-1] = '\0';
   
   /* Fail in case of device */
   Ptr = strchr(Name+1, '/');
   if (!Ptr && (Name[0] == '/')) {  /* Device only... */
      strcat(Name, "/000000/000000");
   }
   
   if (Ptr) {  /* Correct filename in case of toplevel dir */
      Ptr2 = strchr(Ptr+1, '/');
      if (!Ptr2 && (Name[0] == '/')) {
         char End[256];
         strcpy(End, Ptr);
         *(Ptr+1) = '\0';
         strcat(Name, "000000");
         strcat(Name, End);
      }
   }

   /* Try in case a file on toplevel directory or .DIR was already specified */
   Result = stat(Name, info);
   if (Result == 0)
      return(Result);

   /* Add .DIR and try again */
   strcat(Name, ".dir");
   Result = stat(Name, info);
   return(Result);
}

#ifndef	_POSIX_SOURCE
#define	d_ino	d_fileno	/* compatability */
#ifndef	NULL
#define	NULL	0
#endif
#endif	/* !_POSIX_SOURCE */

typedef	struct __dirdesc {
	long 	context;	/* Context descriptor for LIB$FIND_FILE calls */
	char	dirname[255+1];	/* Keeps the directory name, including *.* */
	struct dsc$descriptor_s dirname_desc;	/* Descriptor of dirname */
} DIR;

PRIVATE	DIR *HTVMSopendir(char *dirname);
PRIVATE	struct dirent *HTVMSreaddir(DIR *dirp);
PRIVATE	int HTVMSclosedir(DIR *dirp);

struct	dirent {
	unsigned long	d_fileno;	/* File number of entry */
	unsigned short	d_namlen;	/* Length of string in d_name */
	char		d_name[255+1];	/* Name (up to MAXNAMLEN + 1) */
};

#ifndef	_POSIX_SOURCE
/*
 * It's unlikely to change, but make sure that sizeof d_name above is
 * at least MAXNAMLEN + 1 (more may be added for padding).
 */
#define	MAXNAMLEN	255
/*
 * The macro DIRSIZ(dp) gives the minimum amount of space required to represent
 * a directory entry.  For any directory entry dp->d_reclen >= DIRSIZ(dp).
 * Specific filesystem types may use this macro to construct the value
 * for d_reclen.
 */
#undef	DIRSIZ
#define	DIRSIZ(dp) \
	(((sizeof(struct dirent) - (MAXNAMLEN+1) + ((dp)->d_namlen+1)) +3) & ~3)

#endif	/* !_POSIX_SOURCE */


PRIVATE DIR *HTVMSopendir(char *dirname)
{
static DIR dir;
char *closebracket;
long status;
struct dsc$descriptor_s entryname_desc;
struct dsc$descriptor_s dirname_desc;
char DirEntry[256];
char VMSentry[256];
char UnixEntry[256];
int index;
char *dot;

   /* Check if directory exists */
   /* dirname can look like /disk$user/duns/www/test/multi    */
   /* or like               /disk$user/duns/www/test/multi/   */
   /* DirEntry should look like disk$user:[duns.www.test]multi in both cases */
   /* dir.dirname should look like disk$user:[duns.www.test.multi] */
   strcpy(UnixEntry, dirname);
   if (UnixEntry[strlen(UnixEntry)-1] != '/')
      strcat(UnixEntry, "/");

   strcpy(DirEntry, HTVMS_name("", UnixEntry));
   strcpy(dir.dirname, DirEntry);
   index = strlen(DirEntry) - 1;

   if (DirEntry[index] == ']')
      DirEntry[index] = '\0';

   if ((dot = strrchr(DirEntry,'.')) == NULL){
      /* Convert disk$user:[duns] into disk$user:[000000]duns.dir */
      char *openbr = strrchr(DirEntry, '[');
      if (!openbr) {
	 /* Convert disk$user: into disk$user:[000000]000000.dir */
         strcpy(dir.dirname, DirEntry);
         strcat(dir.dirname, "[000000]");
         strcat(DirEntry, "[000000]000000.dir");
      } else {
         char End[256];
         strcpy(End, openbr+1);
         *(openbr+1) = '\0';
         strcat(DirEntry, "000000]");
         strcat(DirEntry, End);
         strcat(DirEntry, ".dir");
      }
   } else {
      *dot = ']';   
      strcat(DirEntry, ".dir");
   }

   dir.context = 0;
   dirname_desc.dsc$w_length = strlen(DirEntry);
   dirname_desc.dsc$b_dtype = DSC$K_DTYPE_T;
   dirname_desc.dsc$b_class = DSC$K_CLASS_S;
   dirname_desc.dsc$a_pointer = (char *)&(DirEntry);

   /* Look for the directory */
   entryname_desc.dsc$w_length = 255;
   entryname_desc.dsc$b_dtype = DSC$K_DTYPE_T;
   entryname_desc.dsc$b_class = DSC$K_CLASS_S;
   entryname_desc.dsc$a_pointer = VMSentry;

   status = lib$find_file(&(dirname_desc), 
                          &entryname_desc, 
                          &(dir.context),
                          0,0,0,0);
   if (!(status & 0x01)) { /* directory not found */
      return(NULL);
   }

   if (HTVMSFileVersions)
       strcat(dir.dirname, "*.*;*");
   else
       strcat(dir.dirname, "*.*");
   dir.context = 0;
   dir.dirname_desc.dsc$w_length = strlen(dir.dirname);
   dir.dirname_desc.dsc$b_dtype = DSC$K_DTYPE_T;
   dir.dirname_desc.dsc$b_class = DSC$K_CLASS_S;
   dir.dirname_desc.dsc$a_pointer = (char *)&(dir.dirname);
   return(&dir);
}

PRIVATE struct dirent *HTVMSreaddir(DIR *dirp)
{
static struct dirent entry;
long status;
struct dsc$descriptor_s entryname_desc;
char *space, *slash;
char VMSentry[256];
char *UnixEntry;

   entryname_desc.dsc$w_length = 255;
   entryname_desc.dsc$b_dtype = DSC$K_DTYPE_T;
   entryname_desc.dsc$b_class = DSC$K_CLASS_S;
   entryname_desc.dsc$a_pointer = VMSentry;

   status = lib$find_file(&(dirp->dirname_desc), 
                          &entryname_desc, 
                          &(dirp->context),
                          0,0,0,0);
   if (status == RMS$_NMF) { /* No more files */
      return(NULL);
   } else {
      /* ok */
      if (!(status & 0x01))
	  return(0);
      if (HTVMSFileVersions)
          space = strchr(VMSentry, ' ');
      else
          space = strchr(VMSentry, ';');
      if (space)
         *space = '\0';

      /* Convert to unix style... */
      UnixEntry = HTVMS_wwwName(VMSentry);
      slash = strrchr(UnixEntry, '/') + 1;
      strcpy(entry.d_name, slash);
      entry.d_namlen = strlen(entry.d_name);
      entry.d_fileno = 1;
      return(&entry);
   }
}

PRIVATE int HTVMSclosedir(DIR *dirp)
{
long status;

   status = lib$find_file_end(&(dirp->context));
   if (!(status & 0x01))
	exit(status);
   dirp->context = 0;
   return(0);
}

#include "HTAnchor.h"
#include "HTParse.h"
#include "HTBTree.h"
#include "HTFile.h"	/* For HTFileFormat() */
#include "HTAlert.h"
/*
**  Hypertext object building machinery.
*/
#include "HTML.h"
#define PUTC(c) (*targetClass.put_character)(target, c)
#define PUTS(s) (*targetClass.put_string)(target, s)
#define START(e) (*targetClass.start_element)(target, e, 0, 0)
#define END(e) (*targetClass.end_element)(target, e)
#define FREE_TARGET (*targetClass.free)(target)
#define ABORT_TARGET (*targetClass.free)(target)
struct _HTStructured {
	WWW_CONST HTStructuredClass *	isa;
	/* ... */
};

#define STRUCT_DIRENT struct dirent

PRIVATE char * months[12] = {
    "Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"
};

typedef struct _VMSEntryInfo {
    char *       filename;
    char *       type;
    char *       date;
    unsigned int size;
    BOOLEAN      display;  /* Show this entry? */
} VMSEntryInfo;

PRIVATE void free_VMSEntryInfo_contents ARGS1(VMSEntryInfo *, entry_info)
{
    if (entry_info) {
	FREE(entry_info->filename);
	FREE(entry_info->type);
	FREE(entry_info->date);
    }
   /* Do not free the struct */
}

#define FILE_BY_NAME 0 
#define FILE_BY_TYPE 1
#define FILE_BY_SIZE 2
#define FILE_BY_DATE 3
/* Specifies the method of sorting */
PUBLIC BOOLEAN HTfileSortMethod = FILE_BY_NAME;

PUBLIC int compare_VMSEntryInfo_structs ARGS2(VMSEntryInfo *, entry1, 
					      VMSEntryInfo *, entry2)
{
    int i, status;
    char date1[16], date2[16], time1[8], time2[8], month[4];

    switch(HTfileSortMethod) {
        case FILE_BY_SIZE:
			/* Both equal or both 0 */
                        if (entry1->size == entry2->size)
			    return(my_strcasecmp(entry1->filename, 
					       entry2->filename));
			else
			    if (entry1->size > entry2->size)
				return(1);
			    else
				return(-1);
                        break;
        case FILE_BY_TYPE:
                        if (entry1->type && entry2->type) {
                            status = my_strcasecmp(entry1->type, entry2->type);
			    if (status)
				return(status);
			    /* Else fall to filename comparison */
			}
                        return (my_strcasecmp(entry1->filename, 
					    entry2->filename));
                        break;
        case FILE_BY_DATE:
                        if (entry1->date && entry2->date) {
			    /*
			    ** Make sure we have the correct length.
			    */
			    if (strlen(entry1->date) != 12 ||
			        strlen(entry2->date) != 12) {
				return (my_strcasecmp(entry1->filename, 
						    entry2->filename));
			    }
			    /*
			    ** Set up for sorting in reverse
			    ** chronological order.
			    */
			    if (entry1->date[7] != ' ') {
			        strcpy(date1, "9999");
				strcpy(time1, (char *)&entry1->date[7]);
			    } else {
				strcpy(date1, (char *)&entry1->date[8]);
			        strcpy(time1, "00:00");
			    }
			    strncpy(month, entry1->date, 3);
			    month[3] = '\0';
			    for (i = 0; i < 12; i++) {
			        if (!my_strcasecmp(month, months[i])) {
				    break;
				}
			    }
			    i++;
			    sprintf(month, "%s%d", (i < 10 ? "0" : ""), i);
			    strcat(date1, month);
			    strncat(date1, (char *)&entry1->date[4], 2);
			    date1[8] = '\0';
			    if (date1[6] == ' ') {
			        date1[6] = '0';
			    }
			    strcat(date1, time1);
			    if (entry2->date[7] != ' ') {
			        strcpy(date2, "9999");
				strcpy(time2, (char *)&entry2->date[7]);
			    } else {
				strcpy(date2, (char *)&entry2->date[8]);
			        strcpy(time2, "00:00");
			    }
			    strncpy(month, entry2->date, 3);
			    month[3] = '\0';
			    for (i = 0; i < 12; i++) {
			        if (!my_strcasecmp(month, months[i])) {
				    break;
				}
			    }
			    i++;
			    sprintf(month, "%s%d", (i < 10 ? "0" : ""), i);
			    strcat(date2, month);
			    strncat(date2, (char *)&entry2->date[4], 2);
			    date2[8] = '\0';
			    if (date2[6] == ' ') {
			        date2[6] = '0';
			    }
			    strcat(date2, time2);
			    /*
			    ** Do the comparison.
			    */
                            status = my_strcasecmp(date2, date1);
			    if (status)
				return(status);
			    /* Else fall to filename comparison */
			}
                        return (my_strcasecmp(entry1->filename,
					    entry2->filename));
                        break;
        case FILE_BY_NAME:
        default:
                        return (strcmp(entry1->filename, 
					    entry2->filename));
      }
}


/*						    	HTVMSBrowseDir()
**
**	This function generates a directory listing as an HTML-object
**	for local file URL's.  It assumes the first two elements of
**	of the path are a device followed by a directory:
**
**		file://localhost/device/directory[/[foo]]
**
**	Will not accept 000000 as a directory name.
**	Will offer links to parent through the top directory, unless
**	a terminal slash was included in the calling URL.
**
**	Returns HT_LOADED on success, HTLoadError() messages on error.
**
**	Developed for Lynx by Foteos Macrides (macrides@sci.wfeb.edu).
*/
PUBLIC int HTVMSBrowseDir ARGS4(
	WWW_CONST char *,	address,
	HTParentAnchor *,	anchor,
	HTFormat,		format_out,
	HTStream *,		sink
)
{
    HTStructured *target;
    HTStructuredClass targetClass;
    char *pathname = HTParse(address, "", PARSE_PATH + PARSE_PUNCTUATION);
    char *tail = NULL;
    char *title = NULL;
    char *header = NULL;
    char *parent = NULL;
    char *relative = NULL;
    char *backpath = NULL;
    char *cp, *cp1, *cp2;
    int  pathend, len;
    DIR  *dp;
#if (stat != decc$stat) || !defined(MULTINET)
    struct stat file_info;
#else
#undef stat
    struct stat file_info;
#define stat decc$stat
#endif /* VMS MultiNet work around */
    time_t NowTime;
    static char ThisYear[8];
    VMSEntryInfo *entry_info = 0;
    char string_buffer[64];
    BOOLEAN no_dotfiles = 1, show_dotfiles = 0;

    HTUnEscape(pathname);
#ifndef DISABLE_TRACE
    if (www2Trace)
	fprintf(stderr, "HTVMSBrowseDir: Browsing `%s\'\n", pathname);
#endif
    /*
     *  Require at least two elements (presumably a device and directory)
     *  and disallow the device root (000000 directory).  Symbolic paths
     *  (e.g., sys$help) should have been translated and expanded (e.g.,
     *  to /sys$sysroot/syshlp) before calling this routine.
     */
    if (((*pathname != '/') ||
    	 (cp = strchr(pathname+1, '/')) == NULL ||
	 *(cp+1) == '\0' ||
	 0 == strncmp((cp+1), "000000", 6)) ||
        (dp = HTVMSopendir(pathname)) == NULL) {
        FREE(pathname);
    	return HTLoadError(sink, 403, "Could not access directory.");
    }

    /*
     *  Set up the output stream.
     */
    HTProgress("Building directory listing...");
    target = HTML_new(anchor, format_out, sink);
    targetClass = *(target->isa);

    /*
     *  Set up the offset string of the anchor reference,
     *  and strings for the title and header.
     */
    cp = strrchr(pathname, '/');  /* Find last slash */
    StrAllocCopy(tail, (cp+1));
    /* This is a mess because tail's usage is overloaded, but it works */
    if (!*tail && !my_strcasecmp(pathname, address)) {
	*cp = '\0';
	StrAllocCopy(tail, pathname);
	cp1 = strrchr(pathname, '/');
	if (cp1 && (cp1 != pathname) && strncmp((cp1+1), "000000", 6)) {
	    *cp1 = '\0';
	    cp2 = strrchr(pathname, '/');
	    /* Top level directory has no parent (ignoring [000000]) */ 
	    if (cp2 && (cp2 != pathname)) {
		StrAllocCopy(parent, (cp2+1));
		StrAllocCopy(backpath, pathname);
	    }
	    *cp1 = '/';
	}
	StrAllocCopy(title, (cp1+1));
	*cp = '/';
    } else if (*tail) {
        StrAllocCopy(title, tail);
	*cp = '\0';
	if ((cp1 = strrchr(pathname, '/')) && (cp1 != pathname) &&
	    strncmp((cp1+1), "000000", 6))
	    StrAllocCopy(parent, (cp1+1));
	*cp = '/';
    } else {
        pathname[strlen(pathname)-1] = '\0';
	cp = strrchr(pathname, '/');
	StrAllocCopy(title, (cp+1));
	pathname[strlen(pathname)] = '/';
    }
    StrAllocCopy(header, pathname);

    /*
     *  Initialize path name for HTStat().
     */
    pathend = strlen(pathname);
    if (*(pathname + pathend-1) != '/') {
	StrAllocCat(pathname, "/");
	pathend++;
    }
    
    /*
     *  Output the title and header.
     */
    START(HTML_HTML);
    PUTS("\n");
    START(HTML_HEAD);
    PUTS("\n");
    HTUnEscape(title);
    START(HTML_TITLE);
    PUTS(title);
    PUTS(" directory");
    END(HTML_TITLE);
    PUTS("\n");
    FREE(title);
    END(HTML_HEAD);
    PUTS("\n");
    START(HTML_BODY);
    PUTS("\n");
    HTUnEscape(header);
    START(HTML_H1);
    PUTS(header);
    END(HTML_H1);
    PUTS("\n");
    if (HTDirReadme == HT_DIR_README_TOP) {
        FILE *fp;
	if (header[strlen(header)-1] != '/')
	    StrAllocCat(header, "/");
	StrAllocCat(header, HT_DIR_README_FILE);
        if ((fp = fopen(header, "r")) != NULL) {
	    START(HTML_PRE);
	    for(;;) {
	        char c = fgetc(fp);
	        if (c == (char)EOF)
		    break;
#ifdef NOTDEFINED
	        switch (c) {
	    	    case '&':
		    case '<':
		    case '>':
			PUTC('&');
			PUTC('#');
			PUTC((char)(c / 10));
			PUTC((char)(c % 10));
			PUTC(';');
			break;
		    default:
			PUTC(c);
	        }
#else
		PUTC(c);
#endif /* NOTDEFINED */
	    }
	    END(HTML_PRE);
	    fclose(fp);
        } 
    }
    FREE(header);
    if (parent) {
	relative = (char *)malloc(strlen(tail) + 4);
	if (!relative)
		outofmem(__FILE__, "HTVMSBrowseDir");
	if (backpath) {
		sprintf(relative, "%s", backpath);
		free(backpath);
	} else {
		sprintf(relative, "%s/..", tail);
	}
	PUTS("<A HREF=\"");
	PUTS(relative);
	PUTS("\">");
	PUTS("Up to ");
	HTUnEscape(parent);
	PUTS(parent);
	END(HTML_A);
	START(HTML_P);
	PUTS("\n");
	FREE(relative);
	FREE(parent);
    }

    /*
     *  Set up the date comparison.
     */
    NowTime = time(NULL);
    strcpy(ThisYear, (char *)ctime(&NowTime) + 20);
    ThisYear[4] = '\0';

    /*
     * Now, generate the Btree and put it out to the output stream.
     */
    {
	char dottest = 2;	/* To avoid two strcmp() each time */
	STRUCT_DIRENT *dirbuf;
	HTBTree *bt;
	int compressed;

	/* Set up sort key and initialize BTree */
	bt = HTBTree_new((HTComparer) compare_VMSEntryInfo_structs);

	/* Build tree */
	while ((dirbuf = HTVMSreaddir(dp))) {
	    HTAtom *encoding = NULL;
	    HTFormat format;

	    /* Skip if not used */
	    if (!dirbuf->d_ino)	{
		continue;
	    }
	    
	    /* Current and parent directories are never shown in list */
	    if (dottest && (!strcmp(dirbuf->d_name, ".") ||
			    !strcmp(dirbuf->d_name, ".."))) {
		dottest--;
		continue;
	    }

	    /* Don't show the selective enabling file
	     * unless version numbers are included */
	    if (!my_strcasecmp(dirbuf->d_name, HT_DIR_ENABLE_FILE)) {
		continue;
	    }

	    /* Skip files beginning with a dot? */
	    if ((no_dotfiles || !show_dotfiles) && *dirbuf->d_name == '.') {
		continue;
	    }

	    /* OK, make an lstat() and get a key ready. */
	    *(pathname + pathend) = '\0';
	    StrAllocCat(pathname, dirbuf->d_name);
	    if (HTStat(pathname, &file_info)) {
		/* For VMS the failure here means the file is not readable...
		   We however continue to browse through the directory... */
                continue;
	    }
            entry_info = (VMSEntryInfo *)malloc(sizeof(VMSEntryInfo));    
	    if (!entry_info)
		outofmem(__FILE__, "HTVMSBrowseDir");
	    entry_info->type = 0;
	    entry_info->size = 0;
	    entry_info->date = 0;
	    entry_info->filename = 0;
	    entry_info->display = TRUE;

	    /* Get the type */
	    format = HTFileFormat(dirbuf->d_name, &encoding, WWW_PLAINTEXT,
				  &compressed);
	    if (!strncmp(HTAtom_name(format), "application", 11)) {
		cp = HTAtom_name(format) + 12;
		if (!strncmp(cp, "x-", 2))
		    cp += 2;
	    } else {
		    cp = HTAtom_name(format);
	    }
	    StrAllocCopy(entry_info->type, cp);

	    StrAllocCopy(entry_info->filename, dirbuf->d_name);
	    if ((file_info.st_mode & S_IFMT) == S_IFDIR) {
	        /* Strip .DIR part... */
                char *ptr;

                ptr = strstr(entry_info->filename, ".DIR");
                if (ptr)
                   *ptr = '\0';
		ptr = entry_info->filename;
		while (*ptr) {
		    *ptr = TOLOWER(*ptr);
		    ptr++;
		}
		StrAllocCopy(entry_info->type, "Directory");
	    } else {
	        if ((cp = strstr(entry_info->filename, "READ")) == NULL) {
	            cp = entry_info->filename;
		} else {
		    cp += 4;
		    if (!strncmp(cp, "ME", 2)) {
		        cp += 2;
			while (cp && *cp && (*cp != '.')) {
			    cp++;
			}
		    } else if (!strncmp(cp, ".ME", 3)) {
		        cp = (entry_info->filename +
			      strlen(entry_info->filename));
		    } else {
		        cp = entry_info->filename;
		    }
		}
		while (*cp) {
		    *cp = TOLOWER(*cp);
		    cp++;
		}
		if (((len = strlen(entry_info->filename)) > 2) &&
		    entry_info->filename[len-1] == 'z') {
		    if (entry_info->filename[len-2] == '.' ||
		        entry_info->filename[len-2] == '_')
			entry_info->filename[len-1] = 'Z';
		}
	    }

	    /* Get the date */
	    {
	        char *t = (char *)ctime((WWW_CONST time_t *)
			&file_info.st_ctime);
		*(t+24) = '\0';

	        StrAllocCopy(entry_info->date, (t+4));
		*((entry_info->date)+7) = '\0';
		if ((atoi((t+19))) < atoi(ThisYear))
		    StrAllocCat(entry_info->date, (t+19));
		else {
		    StrAllocCat(entry_info->date, (t+11));
		    *((entry_info->date)+12) = '\0';
		}
	    }

	    /* Get the size */
	    if ((file_info.st_mode & S_IFMT) != S_IFDIR)
	        entry_info->size = (unsigned int)file_info.st_size;
	    else
	        entry_info->size = 0;

	    /* Now, update the BTree etc. */
	    if (entry_info->display) {
#ifndef DISABLE_TRACE
		if (www2Trace)
			fprintf(stderr, "Adding file to BTree: %s\n",
						      entry_info->filename);
#endif
	         HTBTree_add(bt, (VMSEntryInfo *)entry_info); 
	      }

	} /* End while HTVMSreaddir() */

	FREE(pathname);
	HTVMSclosedir(dp);

	START(HTML_PRE);
	/*
	 * Run through the BTree printing out in order
	 */
	{
	    HTBTElement * ele;
	    int i;
	    for (ele = HTBTree_next(bt, NULL); ele; ele = HTBTree_next(bt, ele))
	    {
		entry_info = (VMSEntryInfo *)HTBTree_object(ele);

		/* Output the date */
		if (entry_info->date) {
		    PUTS(entry_info->date);
		    PUTS("  ");
		} else {
		    PUTS("     * ");
		}
		/* Output the type */
		if (entry_info->type) {
		    for(i = 0; entry_info->type[i] != '\0' && i < 15; i++)
		        PUTC(entry_info->type[i]);
		    for(; i < 17; i++)
		        PUTC(' ');
		}

		/* Output the link for the name */
		HTDirEntry(target, tail, entry_info->filename);  
		PUTS(entry_info->filename);
		END(HTML_A);

                /* Output the size */
		if (entry_info->size) {
		          if (entry_info->size < 1024)
			      sprintf(string_buffer,"  %d bytes",
							entry_info->size);
			  else
			      sprintf(string_buffer,"  %dKb",
							entry_info->size/1024);
			  PUTS(string_buffer);
		}

		PUTC('\n'); /* End of this entry */

		free_VMSEntryInfo_contents(entry_info);
	    }
	}

	HTBTreeAndObject_free(bt);

    } /* End of both BTree loops */

    /*
     *  Complete the output stream.
     */
    END(HTML_PRE);
    PUTS("\n");
    END(HTML_BODY);
    PUTS("\n");
    END(HTML_HTML);
    PUTS("\n");
    FREE(tail);
    FREE_TARGET;

    return HT_LOADED;

} /* End of directory reading section */
