- (djm) Merge all the openbsd/fake-* into fake-rfc2553.[ch]

[openssh.git] / openbsd-compat / fake-rfc2553.c

diff --git a/openbsd-compat/fake-getaddrinfo.c b/openbsd-compat/fake-rfc2553.c
similarity index 77%
rename from openbsd-compat/fake-getaddrinfo.c
rename to openbsd-compat/fake-rfc2553.c
index c3aba89935f8b66880b94dd0b38cd5eaba333874..a279c7ed4b62a424e2a3176b2e8375361fa115b4 100644 (file)
--- a/openbsd-compat/fake-getaddrinfo.c
+++ b/openbsd-compat/fake-rfc2553.c
@@ -1,18 +1,50 @@
 /*
- * fake library for ssh
- *
- * This file includes getaddrinfo(), freeaddrinfo() and gai_strerror().
- * These funtions are defined in rfc2133.
+ * Pseudo-implementation of RFC2553 name / address resolution functions
  *
  * 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.
  */
 
-#include "includes.h"
-
 RCSID("$Id$");
 
+#ifndef HAVE_GETNAMEINFO
+int getnameinfo(const struct sockaddr *sa, size_t salen, char *host, 
+                size_t hostlen, char *serv, size_t servlen, int flags)
+{
+       struct sockaddr_in *sin = (struct sockaddr_in *)sa;
+       struct hostent *hp;
+       char tmpserv[16];
+
+       if (serv != NULL) {
+               snprintf(tmpserv, sizeof(tmpserv), "%d", ntohs(sin->sin_port));
+               if (strlcpy(serv, tmpserv, servlen) >= servlen)
+                       return (EAI_MEMORY);
+       }
+
+       if (host != NULL) {
+               if (flags & NI_NUMERICHOST) {
+                       if (strlcpy(host, inet_ntoa(sin->sin_addr),
+                           hostlen) >= hostlen)
+                               return (EAI_MEMORY);
+                       else
+                               return (0);
+               } else {
+                       hp = gethostbyaddr((char *)&sin->sin_addr, 
+                           sizeof(struct in_addr), AF_INET);
+                       if (hp == NULL)
+                               return (EAI_NODATA);
+                       
+                       if (strlcpy(host, hp->h_name, hostlen) >= hostlen)
+                               return (EAI_MEMORY);
+                       else
+                               return (0);
+               }
+       }
+       return (0);
+}
+#endif /* !HAVE_GETNAMEINFO */
+
 #ifndef HAVE_GAI_STRERROR
 char *
 gai_strerror(int err)