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-rw-r--r--crypto/kerberosIV/appl/ftp/ftpd/krb4.c372
1 files changed, 0 insertions, 372 deletions
diff --git a/crypto/kerberosIV/appl/ftp/ftpd/krb4.c b/crypto/kerberosIV/appl/ftp/ftpd/krb4.c
deleted file mode 100644
index 2457c61..0000000
--- a/crypto/kerberosIV/appl/ftp/ftpd/krb4.c
+++ /dev/null
@@ -1,372 +0,0 @@
-/*
- * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan
- * (Royal Institute of Technology, Stockholm, Sweden).
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the Kungliga Tekniska
- * Högskolan and its contributors.
- *
- * 4. Neither the name of the Institute nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-RCSID("$Id: krb4.c,v 1.19 1997/05/11 09:00:07 assar Exp $");
-#endif
-
-#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-#ifdef HAVE_SYS_PARAM_H
-#include <sys/param.h>
-#endif
-#ifdef HAVE_NETINET_IN_h
-#include <netinet/in.h>
-#endif
-
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <krb.h>
-
-#include "base64.h"
-#include "extern.h"
-#include "auth.h"
-#include "krb4.h"
-
-#include <roken.h>
-
-static AUTH_DAT auth_dat;
-static des_key_schedule schedule;
-
-int krb4_auth(char *auth)
-{
- auth_complete = 0;
- reply(334, "Using authentication type %s; ADAT must follow", auth);
- return 0;
-}
-
-int krb4_adat(char *auth)
-{
- KTEXT_ST tkt;
- char *p;
- int kerror;
- u_int32_t cs;
- char msg[35]; /* size of encrypted block */
- int len;
-
- char inst[INST_SZ];
-
- memset(&tkt, 0, sizeof(tkt));
- len = base64_decode(auth, tkt.dat);
-
- if(len < 0){
- reply(501, "Failed to decode base64 data.");
- return -1;
- }
- tkt.length = len;
-
- k_getsockinst(0, inst, sizeof(inst));
- kerror = krb_rd_req(&tkt, "ftp", inst, 0, &auth_dat, "");
- if(kerror == RD_AP_UNDEC){
- k_getsockinst(0, inst, sizeof(inst));
- kerror = krb_rd_req(&tkt, "rcmd", inst, 0, &auth_dat, "");
- }
-
- if(kerror){
- reply(535, "Error reading request: %s.", krb_get_err_text(kerror));
- return -1;
- }
-
- des_set_key(&auth_dat.session, schedule);
-
- cs = auth_dat.checksum + 1;
- {
- unsigned char tmp[4];
- tmp[0] = (cs >> 24) & 0xff;
- tmp[1] = (cs >> 16) & 0xff;
- tmp[2] = (cs >> 8) & 0xff;
- tmp[3] = cs & 0xff;
- len = krb_mk_safe(tmp, msg, 4, &auth_dat.session,
- &ctrl_addr, &his_addr);
- }
- if(len < 0){
- reply(535, "Error creating reply: %s.", strerror(errno));
- return -1;
- }
- base64_encode(msg, len, &p);
- reply(235, "ADAT=%s", p);
- auth_complete = 1;
- free(p);
- return 0;
-}
-
-int krb4_pbsz(int size)
-{
- if(size > 1048576) /* XXX arbitrary number */
- size = 1048576;
- buffer_size = size;
- reply(200, "OK PBSZ=%d", buffer_size);
- return 0;
-}
-
-int krb4_prot(int level)
-{
- if(level == prot_confidential)
- return -1;
- return 0;
-}
-
-int krb4_ccc(void)
-{
- reply(534, "Don't event think about it.");
- return -1;
-}
-
-int krb4_mic(char *msg)
-{
- int len;
- int kerror;
- MSG_DAT m_data;
- char *tmp, *cmd;
-
- cmd = strdup(msg);
-
- len = base64_decode(msg, cmd);
- if(len < 0){
- reply(501, "Failed to decode base 64 data.");
- free(cmd);
- return -1;
- }
- kerror = krb_rd_safe(cmd, len, &auth_dat.session,
- &his_addr, &ctrl_addr, &m_data);
-
- if(kerror){
- reply(535, "Error reading request: %s.", krb_get_err_text(kerror));
- free(cmd);
- return -1;
- }
-
- tmp = malloc(strlen(msg) + 1);
- snprintf(tmp, strlen(msg) + 1, "%.*s", (int)m_data.app_length, m_data.app_data);
- if(!strstr(tmp, "\r\n"))
- strcat(tmp, "\r\n");
- new_ftp_command(tmp);
- free(cmd);
- return 0;
-}
-
-int krb4_conf(char *msg)
-{
- prot_level = prot_safe;
-
- reply(537, "Protection level not supported.");
- return -1;
-}
-
-int krb4_enc(char *msg)
-{
- int len;
- int kerror;
- MSG_DAT m_data;
- char *tmp, *cmd;
-
- cmd = strdup(msg);
-
- len = base64_decode(msg, cmd);
- if(len < 0){
- reply(501, "Failed to decode base 64 data.");
- free(cmd);
- return -1;
- }
- kerror = krb_rd_priv(cmd, len, schedule, &auth_dat.session,
- &his_addr, &ctrl_addr, &m_data);
-
- if(kerror){
- reply(535, "Error reading request: %s.", krb_get_err_text(kerror));
- free(cmd);
- return -1;
- }
-
- tmp = strdup(msg);
- snprintf(tmp, strlen(msg) + 1, "%.*s", (int)m_data.app_length, m_data.app_data);
- if(!strstr(tmp, "\r\n"))
- strcat(tmp, "\r\n");
- new_ftp_command(tmp);
- free(cmd);
- return 0;
-}
-
-int krb4_read(int fd, void *data, int length)
-{
- static int left;
- static char *extra;
- static int eof;
- int len, bytes, tx = 0;
-
- MSG_DAT m_data;
- int kerror;
-
- if(eof){ /* if we haven't reported an end-of-file, do so */
- eof = 0;
- return 0;
- }
-
- if(left){
- if(length > left)
- bytes = left;
- else
- bytes = length;
- memmove(data, extra, bytes);
- left -= bytes;
- if(left)
- memmove(extra, extra + bytes, left);
- else
- free(extra);
- length -= bytes;
- tx += bytes;
- }
-
- while(length){
- unsigned char tmp[4];
- if(krb_net_read(fd, tmp, 4) < 4){
- reply(400, "Unexpected end of file.\n");
- return -1;
- }
- len = (tmp[0] << 24) | (tmp[1] << 16) | (tmp[2] << 8) | tmp[3];
- krb_net_read(fd, data_buffer, len);
- if(data_protection == prot_safe)
- kerror = krb_rd_safe(data_buffer, len, &auth_dat.session,
- &his_addr, &ctrl_addr, &m_data);
- else
- kerror = krb_rd_priv(data_buffer, len, schedule, &auth_dat.session,
- &his_addr, &ctrl_addr, &m_data);
-
- if(kerror){
- reply(400, "Failed to read data: %s.", krb_get_err_text(kerror));
- return -1;
- }
-
- bytes = m_data.app_length;
- if(bytes == 0){
- if(tx) eof = 1;
- return tx;
- }
- if(bytes > length){
- left = bytes - length;
- bytes = length;
- extra = malloc(left);
- memmove(extra, m_data.app_data + bytes, left);
- }
- memmove((unsigned char*)data + tx, m_data.app_data, bytes);
- tx += bytes;
- length -= bytes;
- }
- return tx;
-}
-
-int krb4_write(int fd, void *data, int length)
-{
- int len, bytes, tx = 0;
-
- len = buffer_size;
- if(data_protection == prot_safe)
- len -= 31; /* always 31 bytes overhead */
- else
- len -= 26; /* at most 26 bytes */
-
- do{
- if(length < len)
- len = length;
- if(data_protection == prot_safe)
- bytes = krb_mk_safe(data, data_buffer+4, len, &auth_dat.session,
- &ctrl_addr, &his_addr);
- else
- bytes = krb_mk_priv(data, data_buffer+4, len, schedule,
- &auth_dat.session,
- &ctrl_addr, &his_addr);
- if(bytes == -1){
- reply(535, "Failed to make packet: %s.", strerror(errno));
- return -1;
- }
- data_buffer[0] = (bytes >> 24) & 0xff;
- data_buffer[1] = (bytes >> 16) & 0xff;
- data_buffer[2] = (bytes >> 8) & 0xff;
- data_buffer[3] = bytes & 0xff;
- if(krb_net_write(fd, data_buffer, bytes+4) < 0)
- return -1;
- length -= len;
- data = (unsigned char*)data + len;
- tx += len;
- }while(length);
- return tx;
-}
-
-int krb4_userok(char *name)
-{
- if(!kuserok(&auth_dat, name)){
- do_login(232, name);
- }else{
- reply(530, "User %s access denied.", name);
- }
- return 0;
-}
-
-
-int
-krb4_vprintf(const char *fmt, va_list ap)
-{
- char buf[10240];
- char *p;
- char *enc;
- int code;
- int len;
-
- vsnprintf (buf, sizeof(buf), fmt, ap);
- enc = malloc(strlen(buf) + 31);
- if(prot_level == prot_safe){
- len = krb_mk_safe((u_char*)buf, (u_char*)enc, strlen(buf), &auth_dat.session,
- &ctrl_addr, &his_addr);
- code = 631;
- }else if(prot_level == prot_private){
- len = krb_mk_priv((u_char*)buf, (u_char*)enc, strlen(buf), schedule,
- &auth_dat.session, &ctrl_addr, &his_addr);
- code = 632;
- }else{
- len = 0; /* XXX */
- code = 631;
- }
- base64_encode(enc, len, &p);
- fprintf(stdout, "%d %s\r\n", code, p);
- free(enc);
- free(p);
- return 0;
-}
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