- Merged OpenBSD IPv6 patch:

   - [sshd.c sshd.8 sshconnect.c ssh.h ssh.c servconf.h servconf.c scp.1]
     [scp.c packet.h packet.c login.c log.c canohost.c channels.c]
     [hostfile.c sshd_config]
     ipv6 support: mostly gethostbyname->getaddrinfo/getnameinfo, new
     features: sshd allows multiple ListenAddress and Port options. note
     that libwrap is not IPv6-ready. (based on patches from
     fujiwara@rcac.tdi.co.jp)
   - [ssh.c canohost.c]
     more hints (hints.ai_socktype=SOCK_STREAM) for getaddrinfo,
     from itojun@
   - [channels.c]
     listen on _all_ interfaces for X11-Fwd (hints.ai_flags = AI_PASSIVE)
   - [packet.h]
     allow auth-kerberos for IPv4 only
   - [scp.1 sshd.8 servconf.h scp.c]
     document -4, -6, and 'ssh -L 2022/::1/22'
   - [ssh.c]
     'ssh @host' is illegal (null user name), from
     karsten@gedankenpolizei.de
   - [sshconnect.c]
     better error message
   - [sshd.c]
     allow auth-kerberos for IPv4 only
 - Big IPv6 merge:
   - Cleanup overrun in sockaddr copying on RHL 6.1
   - Replacements for getaddrinfo, getnameinfo, etc based on versions
     from patch from KIKUCHI Takahiro <kick@kyoto.wide.ad.jp>
   - Replacement for missing structures on systems that lack IPv6
   - record_login needed to know about AF_INET6 addresses
   - Borrowed more code from OpenBSD: rresvport_af and requisites

1 files changed, 119 insertions, 0 deletions

diff --git a/fake-getaddrinfo.c b/fake-getaddrinfo.c
new file mode 100644
index 000000000..b918798c4
--- /dev/null
+++ b/fake-getaddrinfo.c
@@ -0,0 +1,119 @@
+/*
+ * fake library for ssh
+ *
+ * This file includes getaddrinfo(), freeaddrinfo() and gai_strerror().
+ * These funtions are defined in rfc2133.
+ *
+ * But these functions are not implemented correctly. The minimum subset
+ * is implemented for ssh use only. For exapmle, this routine assumes
+ * that ai_family is AF_INET. Don't use it for another purpose.
+ * 
+ * In the case not using 'configure --enable-ipv6', this getaddrinfo.c
+ * will be used if you have broken getaddrinfo or no getaddrinfo.
+ */
+
+#include "includes.h"
+#include "ssh.h"
+
+#ifndef HAVE_GAI_STRERROR
+char *
+gai_strerror(ecode)
+int ecode;
+{
+  switch (ecode) {
+  case EAI_NODATA:
+    return "no address associated with hostname.";
+  case EAI_MEMORY:
+    return "memory allocation failure.";
+  default:
+    return "unknown error.";
+  }
+}    
+#endif /* !HAVE_GAI_STRERROR */
+
+#ifndef HAVE_FREEADDRINFO
+void
+freeaddrinfo(ai)
+struct addrinfo *ai;
+{
+  struct addrinfo *next;
+  
+  do {
+    next = ai->ai_next;
+    free(ai);
+  } while (ai = next);
+}
+#endif /* !HAVE_FREEADDRINFO */
+
+#ifndef HAVE_GETADDRINFO
+static struct addrinfo *
+malloc_ai(port, addr)
+int port;
+u_long addr;
+{
+  struct addrinfo *ai;
+
+  if (ai = (struct addrinfo *)malloc(sizeof(struct addrinfo) +
+                                     sizeof(struct sockaddr_in))) {
+    memset(ai, 0, sizeof(struct addrinfo) + sizeof(struct sockaddr_in));
+    ai->ai_addr = (struct sockaddr *)(ai + 1);
+    /* XXX -- ssh doesn't use sa_len */
+    ai->ai_addrlen = sizeof(struct sockaddr_in);
+    ai->ai_addr->sa_family = ai->ai_family = AF_INET;
+    ((struct sockaddr_in *)(ai)->ai_addr)->sin_port = port;
+    ((struct sockaddr_in *)(ai)->ai_addr)->sin_addr.s_addr = addr;
+    return ai;
+  } else {
+    return NULL;
+  }
+}
+
+int
+getaddrinfo(hostname, servname, hints, res)
+const char *hostname, *servname;
+const struct addrinfo *hints;
+struct addrinfo **res;
+{
+  struct addrinfo *cur, *prev = NULL;
+  struct hostent *hp;
+  int i, port;
+  
+  if (servname)
+    port = htons(atoi(servname));
+  else
+    port = 0;
+  if (hints && hints->ai_flags & AI_PASSIVE)
+    if (*res = malloc_ai(port, htonl(0x00000000)))
+      return 0;
+    else
+      return EAI_MEMORY;
+  if (!hostname)
+    if (*res = malloc_ai(port, htonl(0x7f000001)))
+      return 0;
+    else
+      return EAI_MEMORY;
+  if (inet_addr(hostname) != -1)
+    if (*res = malloc_ai(port, inet_addr(hostname)))
+      return 0;
+    else
+      return EAI_MEMORY;
+  if ((hp = gethostbyname(hostname)) &&
+      hp->h_name && hp->h_name[0] && hp->h_addr_list[0]) {
+    for (i = 0; hp->h_addr_list[i]; i++)
+      if (cur = malloc_ai(port,
+                          ((struct in_addr *)hp->h_addr_list[i])->s_addr)) {
+        if (prev)
+          prev->ai_next = cur;
+        else
+          *res = cur;
+        prev = cur;
+      } else {
+        if (*res)
+          freeaddrinfo(*res);
+        return EAI_MEMORY;
+      }
+    return 0;
+  }
+  return EAI_NODATA;
+}
+#endif /* !HAVE_GETADDRINFO */