along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: dropin.c,v 1.1.2.6 2001/11/05 19:09:08 guus Exp $
+ $Id: dropin.c,v 1.1.2.7 2001/11/16 17:36:56 zarq Exp $
*/
#include "config.h"
return status;
}
#endif
+
+
+/*
+ * fake library for ssh
+ *
+ * This file is included in getaddrinfo.c and getnameinfo.c.
+ * See getaddrinfo.c and getnameinfo.c.
+ */
+
+/* $Id: dropin.c,v 1.1.2.7 2001/11/16 17:36:56 zarq Exp $ */
+
+/* for old netdb.h */
+#ifndef EAI_NODATA
+#define EAI_NODATA 1
+#define EAI_MEMORY 2
+#endif
+
+/*
+ * 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.
+ */
+
+#ifndef HAVE_GAI_STRERROR
+char *gai_strerror(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(struct addrinfo *ai)
+{
+ struct addrinfo *next;
+
+ do {
+ next = ai->ai_next;
+ free(ai);
+ } while (NULL != (ai = next));
+}
+#endif /* !HAVE_FREEADDRINFO */
+
+#ifndef HAVE_GETADDRINFO
+static struct addrinfo *malloc_ai(int port, u_long addr)
+{
+ struct addrinfo *ai;
+
+ ai = malloc(sizeof(struct addrinfo) + sizeof(struct sockaddr_in));
+ if (ai == NULL)
+ return(NULL);
+
+ 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);
+}
+
+int getaddrinfo(const char *hostname, const char *servname,
+ const struct addrinfo *hints, struct addrinfo **res)
+{
+ struct addrinfo *cur, *prev = NULL;
+ struct hostent *hp;
+ struct in_addr in;
+ int i, port;
+
+ if (servname)
+ port = htons(atoi(servname));
+ else
+ port = 0;
+
+ if (hints && hints->ai_flags & AI_PASSIVE) {
+ if (NULL != (*res = malloc_ai(port, htonl(0x00000000))))
+ return 0;
+ else
+ return EAI_MEMORY;
+ }
+
+ if (!hostname) {
+ if (NULL != (*res = malloc_ai(port, htonl(0x7f000001))))
+ return 0;
+ else
+ return EAI_MEMORY;
+ }
+
+ if (inet_aton(hostname, &in)) {
+ if (NULL != (*res = malloc_ai(port, in.s_addr)))
+ return 0;
+ else
+ return EAI_MEMORY;
+ }
+
+ hp = gethostbyname(hostname);
+ if (hp && hp->h_name && hp->h_name[0] && hp->h_addr_list[0]) {
+ for (i = 0; hp->h_addr_list[i]; i++) {
+ cur = malloc_ai(port, ((struct in_addr *)hp->h_addr_list[i])->s_addr);
+ if (cur == NULL) {
+ if (*res)
+ freeaddrinfo(*res);
+ return EAI_MEMORY;
+ }
+
+ if (prev)
+ prev->ai_next = cur;
+ else
+ *res = cur;
+
+ prev = cur;
+ }
+ return 0;
+ }
+
+ return EAI_NODATA;
+}
+#endif /* !HAVE_GETADDRINFO */
+
+
+/*
+ * fake library for ssh
+ *
+ * This file includes getnameinfo().
+ * 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.
+ */
+
+#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) {
+ snprintf(tmpserv, sizeof(tmpserv), "%d", ntohs(sin->sin_port));
+ if (strlen(tmpserv) >= servlen)
+ return EAI_MEMORY;
+ else
+ strcpy(serv, tmpserv);
+ }
+
+ if (host) {
+ if (flags & NI_NUMERICHOST) {
+ if (strlen(inet_ntoa(sin->sin_addr)) >= hostlen)
+ return EAI_MEMORY;
+
+ strcpy(host, inet_ntoa(sin->sin_addr));
+ return 0;
+ } else {
+ hp = gethostbyaddr((char *)&sin->sin_addr,
+ sizeof(struct in_addr), AF_INET);
+ if (hp == NULL)
+ return EAI_NODATA;
+
+ if (strlen(hp->h_name) >= hostlen)
+ return EAI_MEMORY;
+
+ strcpy(host, hp->h_name);
+ return 0;
+ }
+ }
+ return 0;
+}
+#endif /* !HAVE_GETNAMEINFO */
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: dropin.h,v 1.1.2.4 2001/11/05 19:06:07 guus Exp $
+ $Id: dropin.h,v 1.1.2.5 2001/11/16 17:37:08 zarq Exp $
*/
#ifndef __DROPIN_H__
extern int asprintf(char **, const char *, ...);
#endif
+#ifndef HAVE_STRUCT_ADDRINFO
+struct addrinfo {
+ int ai_flags; /* AI_PASSIVE, AI_CANONNAME */
+ int ai_family; /* PF_xxx */
+ int ai_socktype; /* SOCK_xxx */
+ int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */
+ size_t ai_addrlen; /* length of ai_addr */
+ char *ai_canonname; /* canonical name for hostname */
+ struct sockaddr *ai_addr; /* binary address */
+ struct addrinfo *ai_next; /* next structure in linked list */
+};
+#endif /* !HAVE_STRUCT_ADDRINFO */
+
+#ifndef HAVE_GETADDRINFO
+int getaddrinfo(const char *hostname, const char *servname,
+ const struct addrinfo *hints, struct addrinfo **res);
+#endif /* !HAVE_GETADDRINFO */
+
+#ifndef HAVE_GAI_STRERROR
+char *gai_strerror(int ecode);
+#endif /* !HAVE_GAI_STRERROR */
+
+#ifndef HAVE_FREEADDRINFO
+void freeaddrinfo(struct addrinfo *ai);
+#endif /* !HAVE_FREEADDRINFO */
+
+#ifndef HAVE_GETNAMEINFO
+int getnameinfo(const struct sockaddr *sa, size_t salen, char *host,
+ size_t hostlen, char *serv, size_t servlen, int flags);
+#endif /* !HAVE_GETNAMEINFO */
+
+#ifndef NI_MAXSERV
+# define NI_MAXSERV 32
+#endif /* !NI_MAXSERV */
+#ifndef NI_MAXHOST
+# define NI_MAXHOST 1025
+#endif /* !NI_MAXHOST */
+
+#ifndef AI_PASSIVE
+# define AI_PASSIVE 1
+# define AI_CANONNAME 2
+#endif
+
+#ifndef NI_NUMERICHOST
+# define NI_NUMERICHOST 2
+# define NI_NAMEREQD 4
+# define NI_NUMERICSERV 8
+#endif
+
#endif /* __DROPIN_H__ */
projects / tinc / commitdiff