diff options
Diffstat (limited to 'src/appl/libpty/sane_hostname.c')
| -rw-r--r-- | src/appl/libpty/sane_hostname.c | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/src/appl/libpty/sane_hostname.c b/src/appl/libpty/sane_hostname.c deleted file mode 100644 index 46ac842ee9..0000000000 --- a/src/appl/libpty/sane_hostname.c +++ /dev/null @@ -1,116 +0,0 @@ -/* - * pty_make_sane_hostname: Make a sane hostname from an IP address. - * This returns allocated memory! - * - * Copyright 1999, 2000, 2001 by the Massachusetts Institute of - * Technology. - * - * Permission to use, copy, modify, and distribute this software and - * its documentation for any purpose and without fee is hereby - * granted, provided that the above copyright notice appear in all - * copies and that both that copyright notice and this permission - * notice appear in supporting documentation, and that the name of - * M.I.T. not be used in advertising or publicity pertaining to - * distribution of the software without specific, written prior - * permission. Furthermore if you modify this software you must label - * your software as modified software and not distribute it in such a - * fashion that it might be confused with the original M.I.T. software. - * M.I.T. makes no representations about the suitability - * of this software for any purpose. It is provided "as is" without - * express or implied warranty. - * - */ -#include "com_err.h" -#include "pty-int.h" -#include <sys/socket.h> -#include "libpty.h" -#include <arpa/inet.h> - -#include "socket-utils.h" -#include "fake-addrinfo.h" - -static void -downcase (char *s) -{ - for (; *s != '\0'; s++) - *s = tolower ((int) *s); -} - -long -pty_make_sane_hostname(const struct sockaddr *addr, int maxlen, - int strip_ldomain, int always_ipaddr, char **out) -{ - struct addrinfo *ai = 0; - char addrbuf[NI_MAXHOST]; -#ifdef HAVE_STRUCT_UTMP_UT_HOST - struct utmp ut; -#else - struct utmpx utx; -#endif - char *cp, *domain; - char lhost[MAXHOSTNAMELEN]; - size_t ut_host_len; - - /* Note that on some systems (e.g., AIX 4.3.3), we may get an IPv6 - address such as ::FFFF:18.18.1.71 when an IPv4 connection comes - in. That's okay; at least on AIX, getnameinfo will deal with - that properly. */ - - *out = NULL; - if (maxlen && maxlen < 16) - /* assume they meant 16, otherwise IPv4 addr won't fit */ - maxlen = 16; -#ifdef HAVE_STRUCT_UTMP_UT_HOST - ut_host_len = sizeof (ut.ut_host); -#else - ut_host_len = sizeof (utx.ut_host); -#endif - if (maxlen == 0) - maxlen = ut_host_len; - *out = malloc(ut_host_len); - if (*out == NULL) - return ENOMEM; - - if (always_ipaddr) { - use_ipaddr: - if (getnameinfo (addr, socklen (addr), addrbuf, sizeof (addrbuf), - (char *)0, 0, NI_NUMERICHOST) == 0) - strncpy(*out, addrbuf, ut_host_len); - else - strncpy(*out, "??", ut_host_len); - (*out)[ut_host_len - 1] = '\0'; - return 0; - } - - /* If we didn't want to chop off the local domain, this would be - much simpler -- just a single getnameinfo call and a strncpy. */ - if (getnameinfo(addr, socklen (addr), addrbuf, sizeof (addrbuf), - (char *) NULL, 0, NI_NAMEREQD) != 0) - goto use_ipaddr; - downcase (addrbuf); - if (strip_ldomain) { - struct addrinfo hints; - (void) gethostname(lhost, sizeof (lhost)); - memset (&hints, 0, sizeof (hints)); - hints.ai_family = PF_UNSPEC; - hints.ai_flags = AI_CANONNAME; - if (getaddrinfo(lhost, (char *)NULL, &hints, &ai) == 0 - && ai != NULL) { - if (ai->ai_canonname != NULL) { - downcase (ai->ai_canonname); - domain = strchr (ai->ai_canonname, '.'); - if (domain != NULL) { - cp = strstr (addrbuf, domain); - if (cp != NULL) - *cp = '\0'; - } - } - freeaddrinfo (ai); - } - } - strncpy(*out, addrbuf, ut_host_len); - (*out)[ut_host_len - 1] = '\0'; - if (strlen(*out) >= maxlen) - goto use_ipaddr; - return 0; -} |