procquery.c

sock5代理服务器源代码

/*                                                                           */
/*  * procquery.c : Routines for processing results from Archie              */
/*  *                                                                        */
/*  * Originally part of the Prospero Archie client by Cliff Neuman          */
/*    ([e-mail]).                                                         */
/*  * Modified by Brendan Kehoe ([e-mail]).                        */
/*  * Re-modified by George Ferguson ([e-mail]).            */
/*  *                                                                        */
/*  * Copyright (c) 1991 by the University of Washington                     */
/*  *                                                                        */
/*  * For copying and distribution information, please see the file          */
/*  * <copyright.h>.                                                         */
/*  *                                                                        */


#include "pmachine.h"
#include "pfs.h"
#include "perrno.h"
#include "archie.h"

/* Defined in dirsend.c.  */
extern int client_dirsrv_timeout, client_dirsrv_retry;

/* In archie.c.  */
extern char *program_name;
extern FILE *archie_out;

/*
 * Functions defined here
 */
static void display_link (), alex_name ();
void procquery ();

/*
 * Data defined here
 */
extern int pwarn, perrno;
extern int listflag, sortflag, alex;

int pfs_debug;

static struct tm *presenttime;
static char lastpath[MAX_VPATH] = "\001";
static char lasthost[MAX_VPATH] = "\001";

/* Print the contents of the given virtual link.  */
static void
display_link (l)
     VLINK l;
{
    PATTRIB 	ap;
    char	linkpath[MAX_VPATH];
    int		dirflag = 0;
    int		size = 0;
    char	*modes = "";
    char	archie_date[20];
    char	*gt_date = "";
    int		gt_year = 0;
    int		gt_mon = 0;
    int		gt_day = 0;
    int		gt_hour = 0;
    int		gt_min = 0;
    int		special = listflag || alex;

    /* Initialize local buffers */
    *archie_date = '\0';

    /* Remember if we're looking at a directory */
    if (sindex(l->type,"DIRECTORY"))
	dirflag = 1;
    else
	dirflag = 0;
    
    /* Extract the linkpath from the filename */
    strcpy(linkpath,l->filename);
    *(linkpath + (strlen(linkpath) - strlen(l->name) - 1)) = '\0';
    
    /* Is this a new host? */
    if (strcmp(l->host,lasthost) != 0) {
	if (!special)
	    fprintf (archie_out, "\nHost %s\n\n",l->host);
	strcpy(lasthost,l->host);
	*lastpath = '\001';
    }
    
    /* Is this a new linkpath (location)? */
    if(strcmp(linkpath,lastpath) != 0) {
	if (!special)
	    fprintf (archie_out,
		     "    Location: %s\n",(*linkpath ? linkpath : "/"));
	strcpy(lastpath,linkpath);
    }
    
    /* Parse the attibutes of this link */
    for (ap = l->lattrib; ap; ap = ap->next) {
	if (strcmp(ap->aname,"SIZE") == 0) {
	    sscanf(ap->value.ascii,"%d",&size);
	} else if(strcmp(ap->aname,"UNIX-MODES") == 0) {
	    modes = ap->value.ascii;
	} else if(strcmp(ap->aname,"LAST-MODIFIED") == 0) {
	    gt_date = ap->value.ascii;
	    sscanf(gt_date,"%4d%2d%2d%2d%2d",&gt_year,
		   &gt_mon, &gt_day, &gt_hour, &gt_min);
	    if ((12 * (presenttime->tm_year + 1900 - gt_year) + 
					presenttime->tm_mon - gt_mon) > 6) 
		sprintf(archie_date,"%s %2d %4d",month_sname(gt_mon),
			gt_day, gt_year);
	    else
		sprintf(archie_date,"%s %2d %02d:%02d",month_sname(gt_mon),
			 gt_day, gt_hour, gt_min);
	}
    }
    
    /* Print this link's information */
    if (listflag)
    fprintf (archie_out,
	     "%s %6d %s %s%s\n",gt_date,size,l->host,l->filename,
	     (dirflag ? "/" : ""));
    else if (alex)
      alex_name (l->host, l->filename, dirflag);
    else
	fprintf (archie_out,
		 "      %9s %s %10d  %s  %s\n",(dirflag ? "DIRECTORY" : "FILE"),
		 modes,size,archie_date,l->name);

    /* Free the attibutes */
    atlfree(l->lattrib);
    l->lattrib = NULL;
}

/*	-	-	-	-	-	-	-	-	*/
/*
 * procquery : Process the given query and display the results. If
 *	sortflag is non-zero, then the results are sorted by increasing
 *	date, else by host/filename. If listflag is non-zero then each
 *	entry is printed on a separate, complete line. Note that listflag
 *	is ignored by xarchie.
 */
void
procquery(host,str,max_hits,offset,query)
char *host,*str;
int max_hits,offset;
Query query;
{
    VLINK l;
    time_t now;

    /* initialize data structures for this query */
    (void)time(&now);
    presenttime = localtime(&now);

    /* Do the query */
    if (sortflag == 1)
	l = archie_query(host,str,max_hits,offset,query,AQ_INVDATECMP,0);
    else
	l = archie_query(host,str,max_hits,offset,query,NULL,0);

    /* Error? */
    if (perrno != PSUCCESS) {
	if (p_err_text[perrno]) {
	    if (*p_err_string)
		fprintf(stderr, "%s: failed: %s - %s\n",
			program_name, p_err_text[perrno], p_err_string);
	    else
	        fprintf(stderr, "%s failed: %s\n",
			program_name, p_err_text[perrno]);
	} else
	    fprintf(stderr, "%s failed: Undefined error %d (prospero)",
		    program_name, perrno);
    }

    /* Warning? */
    if (pwarn != PNOWARN) {
	if (*p_warn_string)
	    fprintf(stderr, "%s: Warning! %s - %s\n", program_name,
		p_warn_text[pwarn], p_warn_string);
	else
	    fprintf(stderr, "%s: Warning! %s\n", program_name, p_warn_text[pwarn]);
    }


    /* Display the results */

    if (l == (VLINK)NULL && pwarn == PNOWARN && perrno == PSUCCESS) {
	if (! listflag) puts ("No matches.");
	exit (1);
    }

    *lasthost = '\001';
    *lastpath = '\001';
    while (l != NULL) {
	display_link (l);
	l = l->next;
    }
}

/* Given a dotted hostname, return its Alex root.  */
static char *
alex_reverse (string, len)
     char *string;
     int len;
{
  register char *p, *q;
  register int i = 0;
  char *buf = (char *) malloc (len);

  p = buf;
  q = (char *) (string + len - 1);
  while (q > string)
    {
      for (i = 0; q > string; q--, i++)
	if (*q == '.')
	  {
	    q++;
	    break;
	  }
      if (q == string)
	i++;
      strncpy (p, q, i);
      p += i;
      *p++ = '/';
      i = 0;
      q -= 2;
    }
  *--p = '\0';
  return buf;
}

/* Emit a string that's the Alex filename for the given host and file.  */
static void
alex_name (host, file, dirp)
     char *host, *file;
     int dirp;
{
  int hostlen = strlen (host);
  int len = 6 + hostlen + strlen (file) + dirp +  1;
  char *buf = (char *) malloc (len);

  if (! buf)
    exit (99);

  sprintf (buf, "/alex/%s%s", alex_reverse (host, hostlen), file);
  if (dirp)
    {
      len -= dirp;
      buf[len - 1] = '/';
      buf[len] = '\0';
    }

  fputs (buf, archie_out);
}