mirror of
https://git.FreeBSD.org/ports.git
synced 2024-10-31 21:57:12 +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
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--- canohost.c Mon Jan 10 22:56:13 2000
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***************
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*** 59,68 ****
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char *get_remote_hostname(int socket)
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{
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! struct sockaddr_in from;
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int fromlen, i;
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! struct hostent *hp;
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char name[255];
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/* Get IP address of client. */
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fromlen = sizeof(from);
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--- 59,69 ----
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char *get_remote_hostname(int socket)
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{
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! struct sockaddr_storage from;
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int fromlen, i;
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! struct addrinfo hints, *ai, *aitop;
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char name[255];
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+ char ntop[ADDRSTRLEN], ntop2[ADDRSTRLEN];
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/* Get IP address of client. */
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fromlen = sizeof(from);
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***************
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*** 73,86 ****
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strcpy(name, "UNKNOWN");
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goto check_ip_options;
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}
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/* Map the IP address to a host name. */
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! hp = gethostbyaddr((char *)&from.sin_addr, sizeof(struct in_addr),
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! from.sin_family);
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! if (hp)
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{
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/* Got host name. */
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- strncpy(name, hp->h_name, sizeof(name));
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name[sizeof(name) - 1] = '\0';
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/* Convert it to all lowercase (which is expected by the rest of this
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--- 74,89 ----
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strcpy(name, "UNKNOWN");
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goto check_ip_options;
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}
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+
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+ getnameinfo((struct sockaddr *)&from, fromlen,
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+ ntop, sizeof(ntop), NULL, 0, NI_NUMERICHOST);
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/* Map the IP address to a host name. */
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! if (getnameinfo((struct sockaddr *)&from, fromlen,
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! name, sizeof(name),
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! NULL, 0, NI_NAMEREQD) == 0)
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{
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/* Got host name. */
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name[sizeof(name) - 1] = '\0';
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/* Convert it to all lowercase (which is expected by the rest of this
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***************
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*** 95,119 ****
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Mapping from name to IP address can be trusted better (but can still
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be fooled if the intruder has access to the name server of the
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domain). */
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! hp = gethostbyname(name);
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! if (!hp)
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{
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log_msg("reverse mapping checking gethostbyname for %.700s failed - POSSIBLE BREAKIN ATTEMPT!", name);
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! strcpy(name, inet_ntoa(from.sin_addr));
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goto check_ip_options;
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}
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/* Look for the address from the list of addresses. */
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! for (i = 0; hp->h_addr_list[i]; i++)
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! if (memcmp(hp->h_addr_list[i], &from.sin_addr, sizeof(from.sin_addr))
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! == 0)
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! break;
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/* If we reached the end of the list, the address was not there. */
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! if (!hp->h_addr_list[i])
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{
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/* Address not found for the host name. */
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log_msg("Address %.100s maps to %.600s, but this does not map back to the address - POSSIBLE BREAKIN ATTEMPT!",
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! inet_ntoa(from.sin_addr), name);
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! strcpy(name, inet_ntoa(from.sin_addr));
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goto check_ip_options;
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}
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/* Address was found for the host name. We accept the host name. */
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--- 98,127 ----
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Mapping from name to IP address can be trusted better (but can still
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be fooled if the intruder has access to the name server of the
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domain). */
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! memset(&hints, 0, sizeof(hints));
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! hints.ai_family = from.__ss_family;
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! if (getaddrinfo(name, NULL, &hints, &aitop) != 0)
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{
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log_msg("reverse mapping checking gethostbyname for %.700s failed - POSSIBLE BREAKIN ATTEMPT!", name);
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! strcpy(name, ntop);
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goto check_ip_options;
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}
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/* Look for the address from the list of addresses. */
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! for (ai = aitop; ai; ai = ai->ai_next)
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! {
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! getnameinfo(ai->ai_addr, ai->ai_addrlen,
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! ntop2, sizeof(ntop2), NULL, 0, NI_NUMERICHOST);
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! if (strcmp(ntop, ntop2) == 0)
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! break;
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! }
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! freeaddrinfo(aitop);
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/* If we reached the end of the list, the address was not there. */
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! if (!ai)
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{
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/* Address not found for the host name. */
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log_msg("Address %.100s maps to %.600s, but this does not map back to the address - POSSIBLE BREAKIN ATTEMPT!",
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! ntop, name);
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! strcpy(name, ntop);
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goto check_ip_options;
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}
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/* Address was found for the host name. We accept the host name. */
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***************
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*** 121,127 ****
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else
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{
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/* Host name not found. Use ascii representation of the address. */
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! strcpy(name, inet_ntoa(from.sin_addr));
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log_msg("Could not reverse map address %.100s.", name);
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}
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--- 129,135 ----
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else
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{
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/* Host name not found. Use ascii representation of the address. */
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! strcpy(name, ntop);
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log_msg("Could not reverse map address %.100s.", name);
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}
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***************
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*** 136,141 ****
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--- 144,150 ----
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Notice also that if we just dropped source routing here, the other
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side could use IP spoofing to do rest of the interaction and could still
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bypass security. So we exit here if we detect any IP options. */
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+ if (from.__ss_family == AF_INET) /* IP options -- IPv4 only */
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{
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unsigned char options[200], *ucp;
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char text[1024], *cp;
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***************
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*** 157,165 ****
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for (ucp = options; option_size > 0; ucp++, option_size--, cp += 3)
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sprintf(cp, " %2.2x", *ucp);
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log_msg("Connection from %.100s with IP options:%.800s",
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! inet_ntoa(from.sin_addr), text);
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packet_disconnect("Connection from %.100s with IP options:%.800s",
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! inet_ntoa(from.sin_addr), text);
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}
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}
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#endif
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--- 166,174 ----
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for (ucp = options; option_size > 0; ucp++, option_size--, cp += 3)
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sprintf(cp, " %2.2x", *ucp);
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log_msg("Connection from %.100s with IP options:%.800s",
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! ntop, text);
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packet_disconnect("Connection from %.100s with IP options:%.800s",
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! ntop, text);
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}
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}
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#endif
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***************
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*** 177,183 ****
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const char *get_canonical_hostname(void)
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{
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int fromlen, tolen;
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! struct sockaddr_in from, to;
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/* Check if we have previously retrieved this same name. */
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if (canonical_host_name != NULL)
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--- 186,192 ----
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const char *get_canonical_hostname(void)
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{
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int fromlen, tolen;
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! struct sockaddr_storage from, to;
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/* Check if we have previously retrieved this same name. */
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if (canonical_host_name != NULL)
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***************
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*** 200,207 ****
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&tolen) < 0)
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goto no_ip_addr;
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! if (from.sin_family == AF_INET && to.sin_family == AF_INET &&
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! memcmp(&from, &to, sizeof(from)) == 0)
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goto return_ip_addr;
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no_ip_addr:
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--- 209,215 ----
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&tolen) < 0)
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goto no_ip_addr;
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! if (fromlen == tolen && memcmp(&from, &to, fromlen) == 0)
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goto return_ip_addr;
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no_ip_addr:
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***************
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*** 221,228 ****
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const char *get_remote_ipaddr(void)
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{
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! struct sockaddr_in from, to;
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int fromlen, tolen, socket;
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/* Check if we have previously retrieved this same name. */
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if (canonical_host_ip != NULL)
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--- 229,237 ----
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const char *get_remote_ipaddr(void)
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{
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! struct sockaddr_storage from, to;
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int fromlen, tolen, socket;
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+ char ntop[ADDRSTRLEN];
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/* Check if we have previously retrieved this same name. */
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if (canonical_host_ip != NULL)
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***************
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*** 245,252 ****
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&tolen) < 0)
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goto no_ip_addr;
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! if (from.sin_family == AF_INET && to.sin_family == AF_INET &&
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! memcmp(&from, &to, sizeof(from)) == 0)
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goto return_ip_addr;
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no_ip_addr:
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--- 254,260 ----
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&tolen) < 0)
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goto no_ip_addr;
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! if (fromlen == tolen && memcmp(&from, &to, fromlen) == 0)
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goto return_ip_addr;
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no_ip_addr:
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***************
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*** 269,275 ****
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}
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/* Get the IP address in ascii. */
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! canonical_host_ip = xstrdup(inet_ntoa(from.sin_addr));
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/* Return ip address string. */
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return canonical_host_ip;
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--- 277,285 ----
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}
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/* Get the IP address in ascii. */
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! getnameinfo((struct sockaddr *)&from, fromlen,
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! ntop, sizeof(ntop), NULL, 0, NI_NUMERICHOST);
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! canonical_host_ip = xstrdup(ntop);
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/* Return ip address string. */
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return canonical_host_ip;
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***************
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*** 279,286 ****
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int get_peer_port(int sock)
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{
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! struct sockaddr_in from;
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int fromlen;
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/* Get IP address of client. */
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fromlen = sizeof(from);
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--- 289,297 ----
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int get_peer_port(int sock)
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{
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! struct sockaddr_storage from;
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int fromlen;
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+ char strport[PORTSTRLEN];
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/* Get IP address of client. */
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fromlen = sizeof(from);
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***************
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*** 292,298 ****
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}
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/* Return port number. */
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! return ntohs(from.sin_port);
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}
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/* Returns the port number of the remote host. */
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--- 303,311 ----
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}
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/* Return port number. */
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! getnameinfo((struct sockaddr *)&from, fromlen,
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! NULL, 0, strport, sizeof(strport), NI_NUMERICSERV);
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! return atoi(strport);
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}
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/* Returns the port number of the remote host. */
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***************
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*** 301,307 ****
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{
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int socket;
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int fromlen, tolen;
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! struct sockaddr_in from, to;
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/* If two different descriptors, check if they are internet-domain, and
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have the same address. */
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--- 314,320 ----
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{
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int socket;
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int fromlen, tolen;
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! struct sockaddr_storage from, to;
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/* If two different descriptors, check if they are internet-domain, and
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have the same address. */
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***************
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*** 319,326 ****
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&tolen) < 0)
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goto no_ip_addr;
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! if (from.sin_family == AF_INET && to.sin_family == AF_INET &&
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! memcmp(&from, &to, sizeof(from)) == 0)
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goto return_port;
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no_ip_addr:
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--- 332,338 ----
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&tolen) < 0)
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goto no_ip_addr;
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! if (fromlen == tolen && memcmp(&from, &to, fromlen) == 0)
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goto return_port;
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no_ip_addr:
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***************
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*** 335,337 ****
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--- 347,413 ----
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/* Get and return the peer port number. */
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return get_peer_port(socket);
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}
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+
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+ /* Returns the port of the local of the socket. */
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+
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+ int get_sock_port(int sock)
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+ {
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+ struct sockaddr_storage from;
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+ int fromlen;
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+ char strport[PORTSTRLEN];
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+
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+ /* Get IP address of client. */
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+ fromlen = sizeof(from);
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+ memset(&from, 0, sizeof(from));
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+ if (getsockname(sock, (struct sockaddr *)&from, &fromlen) < 0)
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+ {
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+ error("getsockname failed: %.100s", strerror(errno));
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+ return 0;
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+ }
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+
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+ /* Return port number. */
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+ getnameinfo((struct sockaddr *)&from, fromlen,
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+ NULL, 0, strport, sizeof(strport), NI_NUMERICSERV);
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+ return atoi(strport);
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+ }
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+
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+ /* Returns the port number of the local host. */
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+
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+ int get_local_port()
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+ {
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+ int socket;
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+ int fromlen, tolen;
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+ struct sockaddr_storage from, to;
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+
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+ /* If two different descriptors, check if they are internet-domain, and
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+ have the same address. */
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+ if (packet_get_connection_in() != packet_get_connection_out())
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+ {
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+ fromlen = sizeof(from);
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+ memset(&from, 0, sizeof(from));
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+ if (getsockname(packet_get_connection_in(), (struct sockaddr *)&from,
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+ &fromlen) < 0)
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+ goto no_ip_addr;
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+
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+ tolen = sizeof(to);
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+ memset(&to, 0, sizeof(to));
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+ if (getsockname(packet_get_connection_out(), (struct sockaddr *)&to,
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+ &tolen) < 0)
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+ goto no_ip_addr;
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+
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+ if (fromlen == tolen && memcmp(&from, &to, fromlen) == 0)
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+ goto return_port;
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+
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+ no_ip_addr:
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+ return 65535;
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+ }
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+
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+ return_port:
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+
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+ /* Get client socket. */
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+ socket = packet_get_connection_in();
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+
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+ /* Get and return the local port number. */
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+ return get_sock_port(socket);
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+ }
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+
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