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- (djm) Don't use xmalloc() or pull in toplevel headers in fake-* code

This commit is contained in:
Damien Miller 2003-06-05 10:04:12 +10:00
parent ceb3136f5f
commit b95bb7f9b1
3 changed files with 23 additions and 11 deletions
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3
ChangeLog
View File

@ -4,6 +4,7 @@
- (djm) Implement paranoid priv dropping checks, based on:
"SetUID demystified" - Hao Chen, David Wagner and Drew Dean
Proceedings of USENIX Security Symposium 2002
- (djm) Don't use xmalloc() or pull in toplevel headers in fake-* code
20030604
- (djm) Bug #573 - Remove unneeded Krb headers and compat goop. Patch from
@ -465,4 +466,4 @@
- Fix sshd BindAddress and -b options for systems using fake-getaddrinfo.
Report from murple@murple.net, diagnosis from dtucker@zip.com.au
$Id: ChangeLog,v 1.2783 2003/06/04 23:53:42 djm Exp $
$Id: ChangeLog,v 1.2784 2003/06/05 00:04:12 djm Exp $

21
openbsd-compat/fake-getaddrinfo.c
View File

@ -10,10 +10,8 @@
*/
#include "includes.h"
#include "xmalloc.h"
#include "ssh.h"
RCSID("$Id: fake-getaddrinfo.c,v 1.9 2003/06/04 23:48:33 djm Exp $");
RCSID("$Id: fake-getaddrinfo.c,v 1.10 2003/06/05 00:04:12 djm Exp $");
#ifndef HAVE_GAI_STRERROR
char *
@ -52,7 +50,9 @@ addrinfo *malloc_ai(int port, u_long addr, const struct addrinfo *hints)
{
struct addrinfo *ai;
ai = xmalloc(sizeof(*ai) + sizeof(struct sockaddr_in));
ai = malloc(sizeof(*ai) + sizeof(struct sockaddr_in));
if (ai == NULL)
return (NULL);
memset(ai, '\0', sizeof(*ai) + sizeof(struct sockaddr_in));
@ -105,16 +105,22 @@ getaddrinfo(const char *hostname, const char *servname,
if (hostname && inet_aton(hostname, &in) != 0)
addr = in.s_addr;
*res = malloc_ai(port, addr, hints);
if (*res == NULL)
return (EAI_MEMORY);
return (0);
}
if (!hostname) {
*res = malloc_ai(port, htonl(0x7f000001), hints);
if (*res == NULL)
return (EAI_MEMORY);
return (0);
}
if (inet_aton(hostname, &in)) {
*res = malloc_ai(port, in.s_addr, hints);
if (*res == NULL)
return (EAI_MEMORY);
return (0);
}
@ -126,11 +132,16 @@ getaddrinfo(const char *hostname, const char *servname,
if (hp && hp->h_name && hp->h_name[0] && hp->h_addr_list[0]) {
struct addrinfo *cur, *prev;
cur = prev = NULL;
cur = prev = *res = NULL;
for (i = 0; hp->h_addr_list[i]; i++) {
struct in_addr *in = (struct in_addr *)hp->h_addr_list[i];
cur = malloc_ai(port, in->s_addr, hints);
if (cur == NULL) {
if (*res != NULL)
freeaddrinfo(*res);
return (EAI_MEMORY);
}
if (prev)
prev->ai_next = cur;
else

10
openbsd-compat/fake-getaddrinfo.h
View File

@ -1,4 +1,4 @@
/* $Id: fake-getaddrinfo.h,v 1.5 2003/06/04 23:48:33 djm Exp $ */
/* $Id: fake-getaddrinfo.h,v 1.6 2003/06/05 00:04:12 djm Exp $ */
#ifndef _FAKE_GETADDRINFO_H
#define _FAKE_GETADDRINFO_H
@ -27,16 +27,16 @@ struct addrinfo {
#endif /* !HAVE_STRUCT_ADDRINFO */
#ifndef HAVE_GETADDRINFO
int getaddrinfo(const char *hostname, const char *servname,
const struct addrinfo *hints, struct addrinfo **res);
int getaddrinfo(const char *, const char *,
const struct addrinfo *, struct addrinfo **);
#endif /* !HAVE_GETADDRINFO */
#ifndef HAVE_GAI_STRERROR
char *gai_strerror(int ecode);
char *gai_strerror(int);
#endif /* !HAVE_GAI_STRERROR */
#ifndef HAVE_FREEADDRINFO
void freeaddrinfo(struct addrinfo *ai);
void freeaddrinfo(struct addrinfo *);
#endif /* !HAVE_FREEADDRINFO */
#endif /* _FAKE_GETADDRINFO_H */