92 lines
3.1 KiB
C
92 lines
3.1 KiB
C
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/*
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* Copyright (c) 1991, 1992 by the University of Southern California
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*
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* For copying and distribution information, please see the files
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* <usc-copyr.h>.
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*/
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#include <usc-copyr.h>
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#include <ardp.h>
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#include <pserver.h> /* needed for def. of SERVER_DONT_FLAG_V1 */
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#include <pfs.h>
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#include <plog.h>
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#include <pprot.h>
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#include <pparse.h>
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#include <psrv.h> /* For replyf */
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#include "dirsrv.h"
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/* Return the # of the client version, if it is one that this version of dirsrv
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supports. If it is one that this version cannot support, or if there's an
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error, return -1. */
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int
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version(req, command, next_word)
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RREQ req;
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char *command;
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char *next_word;
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{
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int tmp;
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int client_version;
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char t_sw_id[40];
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char *cp; /* throw-away temp. ptr. */
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#ifndef SERVER_DONT_FLAG_V1
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/* Save the last data encountered in order to avoid logging old software
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versions quite so many times. */
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static char last_oldvers_client_sw_id[40] = "";
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static long last_oldvers_client_host = 0L;
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#endif
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t_sw_id[0] = '\0';
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tmp = qsscanf(next_word,"%d %'!!s %r",&client_version,
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t_sw_id, sizeof t_sw_id, &cp);
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/* Save sw_id before checking tmp so we know how generated */
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if(*t_sw_id) req->peer_sw_id = stcopyr(t_sw_id,req->peer_sw_id);
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if (tmp < 0) {
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interr_buffer_full();
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return -1;
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}
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else if (tmp == 0) {
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replyf(req,"VERSION %d %s\n", MAX_VERSION,PFS_SW_ID);
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return MAX_VERSION;
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} else if (tmp == 3) {
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error_reply(req, "VERSION command takes at most 2 arguments,\
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but we received: %'s", command);
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return -1;
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}
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assert(tmp == 1 || tmp == 2); /* The client must want us to use
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a certain version of the
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protocol. */
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if(client_version == MAX_VERSION) return client_version;
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if((client_version < MAX_VERSION) &&
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(client_version >= MIN_VERSION)) {
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#ifndef SERVER_DONT_FLAG_V1
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if ((last_oldvers_client_host != req->peer_addr.s_addr)
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|| !strequal(last_oldvers_client_sw_id,t_sw_id)) {
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/* Attempt to reduce the # of unnecessary repeated messages logged.
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*/
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plog(L_DIR_PWARN, req, "Old version in use: %d %s%s",
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client_version,
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(t_sw_id[0] ? ", by a client with software ID " : ""),
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t_sw_id, 0);
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qsprintf(last_oldvers_client_sw_id,
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sizeof last_oldvers_client_sw_id, "%s", t_sw_id);
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last_oldvers_client_host = req->peer_addr.s_addr;
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}
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#endif /* SERVER_DONT_FLAG_V1 */
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return client_version;
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}
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if(MAX_VERSION == MIN_VERSION)
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creplyf(req,"VERSION-NOT-SUPPORTED TRY %d",MAX_VERSION);
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else creplyf(req,"VERSION-NOT-SUPPORTED TRY %d-%d",
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MIN_VERSION,MAX_VERSION);
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plog(L_DIR_PERR, req,
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"Unimplemented version in use: %d %s%s",
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client_version,
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(t_sw_id[0] ? ", by a client with software ID " : ""),
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t_sw_id, 0);
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return -1;
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}
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