+++ /dev/null
-/* $OpenBSD: scaffold.c,v 1.1 1997/02/26 03:06:56 downsj Exp $ */
-
- /*
- * Routines for testing only. Not really industrial strength.
- *
- * Author: Wietse Venema, Eindhoven University of Technology, The Netherlands.
- */
-
-#ifndef lint
-#if 0
-static char sccs_id[] = "@(#) scaffold.c 1.5 95/01/03 09:13:48";
-#else
-static char rcsid[] = "$OpenBSD: scaffold.c,v 1.1 1997/02/26 03:06:56 downsj Exp $";
-#endif
-#endif
-
-/* System libraries. */
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <netdb.h>
-#include <stdio.h>
-#include <syslog.h>
-#include <setjmp.h>
-#include <string.h>
-
-#ifndef INADDR_NONE
-#define INADDR_NONE (-1) /* XXX should be 0xffffffff */
-#endif
-
-extern char *malloc();
-
-/* Application-specific. */
-
-#include "tcpd.h"
-#include "scaffold.h"
-
- /*
- * These are referenced by the options module and by rfc931.c.
- */
-int allow_severity = SEVERITY;
-int deny_severity = LOG_WARNING;
-int rfc931_timeout = RFC931_TIMEOUT;
-
-/* dup_hostent - create hostent in one memory block */
-
-static struct hostent *dup_hostent(hp)
-struct hostent *hp;
-{
- struct hostent_block {
- struct hostent host;
- char *addr_list[1];
- };
- struct hostent_block *hb;
- int count;
- char *data;
- char *addr;
-
- for (count = 0; hp->h_addr_list[count] != 0; count++)
- /* void */ ;
-
- if ((hb = (struct hostent_block *) malloc(sizeof(struct hostent_block)
- + (hp->h_length + sizeof(char *)) * count)) == 0) {
- fprintf(stderr, "Sorry, out of memory\n");
- exit(1);
- }
- memset((char *) &hb->host, 0, sizeof(hb->host));
- hb->host.h_length = hp->h_length;
- hb->host.h_addr_list = hb->addr_list;
- hb->host.h_addr_list[count] = 0;
- data = (char *) (hb->host.h_addr_list + count + 1);
-
- for (count = 0; (addr = hp->h_addr_list[count]) != 0; count++) {
- hb->host.h_addr_list[count] = data + hp->h_length * count;
- memcpy(hb->host.h_addr_list[count], addr, hp->h_length);
- }
- return (&hb->host);
-}
-
-/* find_inet_addr - find all addresses for this host, result to free() */
-
-struct hostent *find_inet_addr(host)
-char *host;
-{
- struct in_addr addr;
- struct hostent *hp;
- static struct hostent h;
- static char *addr_list[2];
-
- /*
- * Host address: translate it to internal form.
- */
- if ((addr.s_addr = dot_quad_addr(host)) != INADDR_NONE) {
- h.h_addr_list = addr_list;
- h.h_addr_list[0] = (char *) &addr;
- h.h_length = sizeof(addr);
- return (dup_hostent(&h));
- }
-
- /*
- * Map host name to a series of addresses. Watch out for non-internet
- * forms or aliases. The NOT_INADDR() is here in case gethostbyname() has
- * been "enhanced" to accept numeric addresses. Make a copy of the
- * address list so that later gethostbyXXX() calls will not clobber it.
- */
- if (NOT_INADDR(host) == 0) {
- tcpd_warn("%s: not an internet address", host);
- return (0);
- }
- if ((hp = gethostbyname(host)) == 0) {
- tcpd_warn("%s: host not found", host);
- return (0);
- }
- if (hp->h_addrtype != AF_INET) {
- tcpd_warn("%d: not an internet host", hp->h_addrtype);
- return (0);
- }
- if (STR_NE(host, hp->h_name)) {
- tcpd_warn("%s: hostname alias", host);
- tcpd_warn("(official name: %s)", hp->h_name);
- }
- return (dup_hostent(hp));
-}
-
-/* check_dns - give each address thorough workout, return address count */
-
-int check_dns(host)
-char *host;
-{
- struct request_info request;
- struct sockaddr_in sin;
- struct hostent *hp;
- int count;
- char *addr;
-
- if ((hp = find_inet_addr(host)) == 0)
- return (0);
- request_init(&request, RQ_CLIENT_SIN, &sin, 0);
- sock_methods(&request);
- memset((char *) &sin, 0, sizeof(sin));
- sin.sin_family = AF_INET;
-
- for (count = 0; (addr = hp->h_addr_list[count]) != 0; count++) {
- memcpy((char *) &sin.sin_addr, addr, sizeof(sin.sin_addr));
-
- /*
- * Force host name and address conversions. Use the request structure
- * as a cache. Detect hostname lookup problems. Any name/name or
- * name/address conflicts will be reported while eval_hostname() does
- * its job.
- */
- request_set(&request, RQ_CLIENT_ADDR, "", RQ_CLIENT_NAME, "", 0);
- if (STR_EQ(eval_hostname(request.client), unknown))
- tcpd_warn("host address %s->name lookup failed",
- eval_hostaddr(request.client));
- }
- free((char *) hp);
- return (count);
-}
-
-/* dummy function to intercept the real shell_cmd() */
-
-/* ARGSUSED */
-
-void shell_cmd(command)
-char *command;
-{
- if (hosts_access_verbose)
- printf("command: %s", command);
-}
-
-/* dummy function to intercept the real clean_exit() */
-
-/* ARGSUSED */
-
-void clean_exit(request)
-struct request_info *request;
-{
- exit(0);
-}
-
-/* dummy function to intercept the real rfc931() */
-
-/* ARGSUSED */
-
-void rfc931(request)
-struct request_info *request;
-{
- strcpy(request->user, unknown);
-}
-
-/* check_path - examine accessibility */
-
-int check_path(path, st)
-char *path;
-struct stat *st;
-{
- struct stat stbuf;
- char buf[BUFSIZ];
-
- if (stat(path, st) < 0)
- return (-1);
-#ifdef notdef
- if (st->st_uid != 0)
- tcpd_warn("%s: not owned by root", path);
- if (st->st_mode & 020)
- tcpd_warn("%s: group writable", path);
-#endif
- if (st->st_mode & 002)
- tcpd_warn("%s: world writable", path);
- if (path[0] == '/' && path[1] != 0) {
- strrchr(strcpy(buf, path), '/')[0] = 0;
- (void) check_path(buf[0] ? buf : "/", &stbuf);
- }
- return (0);
-}
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