-
-
-/*
- * 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 */
projects / tinc / blobdiff