mirror of
https://git.FreeBSD.org/ports.git
synced 2024-10-30 21:49:25 +00:00
eb66565459
The IPv6 patch was obtained from the kame repository and has been
been writen by KIKUCHI Takahiro <kick@kyoto.wide.ad.jp>
Due to the whole mess with different patches it was necessary to include
both the IPv6 patch and patch-ssh-1.2.27-bsd.tty.chown in ${PATCHDIR}.
Since both patches modify the configure script it was also necessary
to rebuild it via autoconf from configure.in. I've decided to use
USE_AUTOCONF instead of including the re-build configure script in
${FILESDIR}
Obtained from: KAME/WIDE
402 lines
12 KiB
Plaintext
402 lines
12 KiB
Plaintext
*** canohost.c.orig Wed May 12 13:19:24 1999
|
|
--- canohost.c Mon Jan 10 22:56:13 2000
|
|
***************
|
|
*** 59,68 ****
|
|
|
|
char *get_remote_hostname(int socket)
|
|
{
|
|
! struct sockaddr_in from;
|
|
int fromlen, i;
|
|
! struct hostent *hp;
|
|
char name[255];
|
|
|
|
/* Get IP address of client. */
|
|
fromlen = sizeof(from);
|
|
--- 59,69 ----
|
|
|
|
char *get_remote_hostname(int socket)
|
|
{
|
|
! struct sockaddr_storage from;
|
|
int fromlen, i;
|
|
! struct addrinfo hints, *ai, *aitop;
|
|
char name[255];
|
|
+ char ntop[ADDRSTRLEN], ntop2[ADDRSTRLEN];
|
|
|
|
/* Get IP address of client. */
|
|
fromlen = sizeof(from);
|
|
***************
|
|
*** 73,86 ****
|
|
strcpy(name, "UNKNOWN");
|
|
goto check_ip_options;
|
|
}
|
|
|
|
/* Map the IP address to a host name. */
|
|
! hp = gethostbyaddr((char *)&from.sin_addr, sizeof(struct in_addr),
|
|
! from.sin_family);
|
|
! if (hp)
|
|
{
|
|
/* Got host name. */
|
|
- strncpy(name, hp->h_name, sizeof(name));
|
|
name[sizeof(name) - 1] = '\0';
|
|
|
|
/* Convert it to all lowercase (which is expected by the rest of this
|
|
--- 74,89 ----
|
|
strcpy(name, "UNKNOWN");
|
|
goto check_ip_options;
|
|
}
|
|
+
|
|
+ getnameinfo((struct sockaddr *)&from, fromlen,
|
|
+ ntop, sizeof(ntop), NULL, 0, NI_NUMERICHOST);
|
|
|
|
/* Map the IP address to a host name. */
|
|
! if (getnameinfo((struct sockaddr *)&from, fromlen,
|
|
! name, sizeof(name),
|
|
! NULL, 0, NI_NAMEREQD) == 0)
|
|
{
|
|
/* Got host name. */
|
|
name[sizeof(name) - 1] = '\0';
|
|
|
|
/* Convert it to all lowercase (which is expected by the rest of this
|
|
***************
|
|
*** 95,119 ****
|
|
Mapping from name to IP address can be trusted better (but can still
|
|
be fooled if the intruder has access to the name server of the
|
|
domain). */
|
|
! hp = gethostbyname(name);
|
|
! if (!hp)
|
|
{
|
|
log_msg("reverse mapping checking gethostbyname for %.700s failed - POSSIBLE BREAKIN ATTEMPT!", name);
|
|
! strcpy(name, inet_ntoa(from.sin_addr));
|
|
goto check_ip_options;
|
|
}
|
|
/* Look for the address from the list of addresses. */
|
|
! for (i = 0; hp->h_addr_list[i]; i++)
|
|
! if (memcmp(hp->h_addr_list[i], &from.sin_addr, sizeof(from.sin_addr))
|
|
! == 0)
|
|
! break;
|
|
/* If we reached the end of the list, the address was not there. */
|
|
! if (!hp->h_addr_list[i])
|
|
{
|
|
/* Address not found for the host name. */
|
|
log_msg("Address %.100s maps to %.600s, but this does not map back to the address - POSSIBLE BREAKIN ATTEMPT!",
|
|
! inet_ntoa(from.sin_addr), name);
|
|
! strcpy(name, inet_ntoa(from.sin_addr));
|
|
goto check_ip_options;
|
|
}
|
|
/* Address was found for the host name. We accept the host name. */
|
|
--- 98,127 ----
|
|
Mapping from name to IP address can be trusted better (but can still
|
|
be fooled if the intruder has access to the name server of the
|
|
domain). */
|
|
! memset(&hints, 0, sizeof(hints));
|
|
! hints.ai_family = from.__ss_family;
|
|
! if (getaddrinfo(name, NULL, &hints, &aitop) != 0)
|
|
{
|
|
log_msg("reverse mapping checking gethostbyname for %.700s failed - POSSIBLE BREAKIN ATTEMPT!", name);
|
|
! strcpy(name, ntop);
|
|
goto check_ip_options;
|
|
}
|
|
/* Look for the address from the list of addresses. */
|
|
! for (ai = aitop; ai; ai = ai->ai_next)
|
|
! {
|
|
! getnameinfo(ai->ai_addr, ai->ai_addrlen,
|
|
! ntop2, sizeof(ntop2), NULL, 0, NI_NUMERICHOST);
|
|
! if (strcmp(ntop, ntop2) == 0)
|
|
! break;
|
|
! }
|
|
! freeaddrinfo(aitop);
|
|
/* If we reached the end of the list, the address was not there. */
|
|
! if (!ai)
|
|
{
|
|
/* Address not found for the host name. */
|
|
log_msg("Address %.100s maps to %.600s, but this does not map back to the address - POSSIBLE BREAKIN ATTEMPT!",
|
|
! ntop, name);
|
|
! strcpy(name, ntop);
|
|
goto check_ip_options;
|
|
}
|
|
/* Address was found for the host name. We accept the host name. */
|
|
***************
|
|
*** 121,127 ****
|
|
else
|
|
{
|
|
/* Host name not found. Use ascii representation of the address. */
|
|
! strcpy(name, inet_ntoa(from.sin_addr));
|
|
log_msg("Could not reverse map address %.100s.", name);
|
|
}
|
|
|
|
--- 129,135 ----
|
|
else
|
|
{
|
|
/* Host name not found. Use ascii representation of the address. */
|
|
! strcpy(name, ntop);
|
|
log_msg("Could not reverse map address %.100s.", name);
|
|
}
|
|
|
|
***************
|
|
*** 136,141 ****
|
|
--- 144,150 ----
|
|
Notice also that if we just dropped source routing here, the other
|
|
side could use IP spoofing to do rest of the interaction and could still
|
|
bypass security. So we exit here if we detect any IP options. */
|
|
+ if (from.__ss_family == AF_INET) /* IP options -- IPv4 only */
|
|
{
|
|
unsigned char options[200], *ucp;
|
|
char text[1024], *cp;
|
|
***************
|
|
*** 157,165 ****
|
|
for (ucp = options; option_size > 0; ucp++, option_size--, cp += 3)
|
|
sprintf(cp, " %2.2x", *ucp);
|
|
log_msg("Connection from %.100s with IP options:%.800s",
|
|
! inet_ntoa(from.sin_addr), text);
|
|
packet_disconnect("Connection from %.100s with IP options:%.800s",
|
|
! inet_ntoa(from.sin_addr), text);
|
|
}
|
|
}
|
|
#endif
|
|
--- 166,174 ----
|
|
for (ucp = options; option_size > 0; ucp++, option_size--, cp += 3)
|
|
sprintf(cp, " %2.2x", *ucp);
|
|
log_msg("Connection from %.100s with IP options:%.800s",
|
|
! ntop, text);
|
|
packet_disconnect("Connection from %.100s with IP options:%.800s",
|
|
! ntop, text);
|
|
}
|
|
}
|
|
#endif
|
|
***************
|
|
*** 177,183 ****
|
|
const char *get_canonical_hostname(void)
|
|
{
|
|
int fromlen, tolen;
|
|
! struct sockaddr_in from, to;
|
|
|
|
/* Check if we have previously retrieved this same name. */
|
|
if (canonical_host_name != NULL)
|
|
--- 186,192 ----
|
|
const char *get_canonical_hostname(void)
|
|
{
|
|
int fromlen, tolen;
|
|
! struct sockaddr_storage from, to;
|
|
|
|
/* Check if we have previously retrieved this same name. */
|
|
if (canonical_host_name != NULL)
|
|
***************
|
|
*** 200,207 ****
|
|
&tolen) < 0)
|
|
goto no_ip_addr;
|
|
|
|
! if (from.sin_family == AF_INET && to.sin_family == AF_INET &&
|
|
! memcmp(&from, &to, sizeof(from)) == 0)
|
|
goto return_ip_addr;
|
|
|
|
no_ip_addr:
|
|
--- 209,215 ----
|
|
&tolen) < 0)
|
|
goto no_ip_addr;
|
|
|
|
! if (fromlen == tolen && memcmp(&from, &to, fromlen) == 0)
|
|
goto return_ip_addr;
|
|
|
|
no_ip_addr:
|
|
***************
|
|
*** 221,228 ****
|
|
|
|
const char *get_remote_ipaddr(void)
|
|
{
|
|
! struct sockaddr_in from, to;
|
|
int fromlen, tolen, socket;
|
|
|
|
/* Check if we have previously retrieved this same name. */
|
|
if (canonical_host_ip != NULL)
|
|
--- 229,237 ----
|
|
|
|
const char *get_remote_ipaddr(void)
|
|
{
|
|
! struct sockaddr_storage from, to;
|
|
int fromlen, tolen, socket;
|
|
+ char ntop[ADDRSTRLEN];
|
|
|
|
/* Check if we have previously retrieved this same name. */
|
|
if (canonical_host_ip != NULL)
|
|
***************
|
|
*** 245,252 ****
|
|
&tolen) < 0)
|
|
goto no_ip_addr;
|
|
|
|
! if (from.sin_family == AF_INET && to.sin_family == AF_INET &&
|
|
! memcmp(&from, &to, sizeof(from)) == 0)
|
|
goto return_ip_addr;
|
|
|
|
no_ip_addr:
|
|
--- 254,260 ----
|
|
&tolen) < 0)
|
|
goto no_ip_addr;
|
|
|
|
! if (fromlen == tolen && memcmp(&from, &to, fromlen) == 0)
|
|
goto return_ip_addr;
|
|
|
|
no_ip_addr:
|
|
***************
|
|
*** 269,275 ****
|
|
}
|
|
|
|
/* Get the IP address in ascii. */
|
|
! canonical_host_ip = xstrdup(inet_ntoa(from.sin_addr));
|
|
|
|
/* Return ip address string. */
|
|
return canonical_host_ip;
|
|
--- 277,285 ----
|
|
}
|
|
|
|
/* Get the IP address in ascii. */
|
|
! getnameinfo((struct sockaddr *)&from, fromlen,
|
|
! ntop, sizeof(ntop), NULL, 0, NI_NUMERICHOST);
|
|
! canonical_host_ip = xstrdup(ntop);
|
|
|
|
/* Return ip address string. */
|
|
return canonical_host_ip;
|
|
***************
|
|
*** 279,286 ****
|
|
|
|
int get_peer_port(int sock)
|
|
{
|
|
! struct sockaddr_in from;
|
|
int fromlen;
|
|
|
|
/* Get IP address of client. */
|
|
fromlen = sizeof(from);
|
|
--- 289,297 ----
|
|
|
|
int get_peer_port(int sock)
|
|
{
|
|
! struct sockaddr_storage from;
|
|
int fromlen;
|
|
+ char strport[PORTSTRLEN];
|
|
|
|
/* Get IP address of client. */
|
|
fromlen = sizeof(from);
|
|
***************
|
|
*** 292,298 ****
|
|
}
|
|
|
|
/* Return port number. */
|
|
! return ntohs(from.sin_port);
|
|
}
|
|
|
|
/* Returns the port number of the remote host. */
|
|
--- 303,311 ----
|
|
}
|
|
|
|
/* Return port number. */
|
|
! getnameinfo((struct sockaddr *)&from, fromlen,
|
|
! NULL, 0, strport, sizeof(strport), NI_NUMERICSERV);
|
|
! return atoi(strport);
|
|
}
|
|
|
|
/* Returns the port number of the remote host. */
|
|
***************
|
|
*** 301,307 ****
|
|
{
|
|
int socket;
|
|
int fromlen, tolen;
|
|
! struct sockaddr_in from, to;
|
|
|
|
/* If two different descriptors, check if they are internet-domain, and
|
|
have the same address. */
|
|
--- 314,320 ----
|
|
{
|
|
int socket;
|
|
int fromlen, tolen;
|
|
! struct sockaddr_storage from, to;
|
|
|
|
/* If two different descriptors, check if they are internet-domain, and
|
|
have the same address. */
|
|
***************
|
|
*** 319,326 ****
|
|
&tolen) < 0)
|
|
goto no_ip_addr;
|
|
|
|
! if (from.sin_family == AF_INET && to.sin_family == AF_INET &&
|
|
! memcmp(&from, &to, sizeof(from)) == 0)
|
|
goto return_port;
|
|
|
|
no_ip_addr:
|
|
--- 332,338 ----
|
|
&tolen) < 0)
|
|
goto no_ip_addr;
|
|
|
|
! if (fromlen == tolen && memcmp(&from, &to, fromlen) == 0)
|
|
goto return_port;
|
|
|
|
no_ip_addr:
|
|
***************
|
|
*** 335,337 ****
|
|
--- 347,413 ----
|
|
/* Get and return the peer port number. */
|
|
return get_peer_port(socket);
|
|
}
|
|
+
|
|
+ /* Returns the port of the local of the socket. */
|
|
+
|
|
+ int get_sock_port(int sock)
|
|
+ {
|
|
+ struct sockaddr_storage from;
|
|
+ int fromlen;
|
|
+ char strport[PORTSTRLEN];
|
|
+
|
|
+ /* Get IP address of client. */
|
|
+ fromlen = sizeof(from);
|
|
+ memset(&from, 0, sizeof(from));
|
|
+ if (getsockname(sock, (struct sockaddr *)&from, &fromlen) < 0)
|
|
+ {
|
|
+ error("getsockname failed: %.100s", strerror(errno));
|
|
+ return 0;
|
|
+ }
|
|
+
|
|
+ /* Return port number. */
|
|
+ getnameinfo((struct sockaddr *)&from, fromlen,
|
|
+ NULL, 0, strport, sizeof(strport), NI_NUMERICSERV);
|
|
+ return atoi(strport);
|
|
+ }
|
|
+
|
|
+ /* Returns the port number of the local host. */
|
|
+
|
|
+ int get_local_port()
|
|
+ {
|
|
+ int socket;
|
|
+ int fromlen, tolen;
|
|
+ struct sockaddr_storage from, to;
|
|
+
|
|
+ /* If two different descriptors, check if they are internet-domain, and
|
|
+ have the same address. */
|
|
+ if (packet_get_connection_in() != packet_get_connection_out())
|
|
+ {
|
|
+ fromlen = sizeof(from);
|
|
+ memset(&from, 0, sizeof(from));
|
|
+ if (getsockname(packet_get_connection_in(), (struct sockaddr *)&from,
|
|
+ &fromlen) < 0)
|
|
+ goto no_ip_addr;
|
|
+
|
|
+ tolen = sizeof(to);
|
|
+ memset(&to, 0, sizeof(to));
|
|
+ if (getsockname(packet_get_connection_out(), (struct sockaddr *)&to,
|
|
+ &tolen) < 0)
|
|
+ goto no_ip_addr;
|
|
+
|
|
+ if (fromlen == tolen && memcmp(&from, &to, fromlen) == 0)
|
|
+ goto return_port;
|
|
+
|
|
+ no_ip_addr:
|
|
+ return 65535;
|
|
+ }
|
|
+
|
|
+ return_port:
|
|
+
|
|
+ /* Get client socket. */
|
|
+ socket = packet_get_connection_in();
|
|
+
|
|
+ /* Get and return the local port number. */
|
|
+ return get_sock_port(socket);
|
|
+ }
|
|
+
|