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Diffstat (limited to 'plugins/getaddrinfo.c')
-rw-r--r--plugins/getaddrinfo.c305
1 files changed, 0 insertions, 305 deletions
diff --git a/plugins/getaddrinfo.c b/plugins/getaddrinfo.c
deleted file mode 100644
index 56978208..00000000
--- a/plugins/getaddrinfo.c
+++ /dev/null
@@ -1,305 +0,0 @@
-/*
- * This file is part of libESMTP, a library for submission of RFC 2822
- * formatted electronic mail messages using the SMTP protocol described
- * in RFC 2821.
- * Modified by Jeremy T. Bouse for use in Nagios plugins
- *
- * Copyright (C) 2001,2002 Brian Stafford <brian@stafford.uklinux.net>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/* An emulation of the RFC 2553 / Posix getaddrinfo resolver interface.
- *
- * $Id$
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-/* Need to turn off Posix features in glibc to build this */
-#undef _POSIX_C_SOURCE
-#undef _XOPEN_SOURCE
-
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#include <errno.h>
-
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-
-#include <netdb.h>
-
-#include "gethostbyname.h"
-#include "getaddrinfo.h"
-
-static struct addrinfo *
-dup_addrinfo (struct addrinfo *info, void *addr, size_t addrlen)
-{
- struct addrinfo *ret;
-
- ret = malloc (sizeof (struct addrinfo));
- if (ret == NULL)
- return NULL;
- memcpy (ret, info, sizeof (struct addrinfo));
- ret->ai_addr = malloc (addrlen);
- if (ret->ai_addr == NULL)
- {
- free (ret);
- return NULL;
- }
- memcpy (ret->ai_addr, addr, addrlen);
- ret->ai_addrlen = addrlen;
- return ret;
-}
-
-int
-getaddrinfo (const char *nodename, const char *servname,
- const struct addrinfo *hints, struct addrinfo **res)
-{
- struct hostent *hp;
- struct servent *servent;
- const char *socktype;
- int port;
- struct addrinfo hint, result;
- struct addrinfo *ai, *sai, *eai;
- struct ghbnctx ghbnctx;
- char **addrs;
- int code;
-
- memset (&result, 0, sizeof result);
-
- /* default for hints */
- if (hints == NULL)
- {
- memset (&hint, 0, sizeof hint);
- hint.ai_family = PF_UNSPEC;
- hints = &hint;
- }
-
- result.ai_socktype = hints->ai_socktype;
-
- /* Note: maintain port in host byte order to make debugging easier */
- if (servname != NULL) {
- if (isdigit (*servname))
- port = strtol (servname, NULL, 10);
- else if ((servent = getservbyname (servname, socktype)) != NULL)
- port = ntohs (servent->s_port);
- else
- return EAI_NONAME;
- }
-
- /* if nodename == NULL refer to the local host for a client or any
- for a server */
- if (nodename == NULL)
- {
- struct sockaddr_in sin;
-
- /* check protocol family is PF_UNSPEC or PF_INET - could try harder
- for IPv6 but that's more code than I'm prepared to write */
- if (hints->ai_family == PF_UNSPEC || hints->ai_family == PF_INET)
- result.ai_family = AF_INET;
- else
- return EAI_FAMILY;
-
- sin.sin_family = result.ai_family;
- sin.sin_port = htons (port);
- if (hints->ai_flags & AI_PASSIVE)
- sin.sin_addr.s_addr = htonl (INADDR_ANY);
- else
- sin.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
- /* Duplicate result and addr and return */
- *res = dup_addrinfo (&result, &sin, sizeof sin);
- return (*res == NULL) ? EAI_MEMORY : 0;
- }
-
- /* If AI_NUMERIC is specified, use inet_addr to translate numbers and
- dots notation. */
- if (hints->ai_flags & AI_NUMERICHOST)
- {
- struct sockaddr_in sin;
-
- /* check protocol family is PF_UNSPEC or PF_INET */
- if (hints->ai_family == PF_UNSPEC || hints->ai_family == PF_INET)
- result.ai_family = AF_INET;
- else
- return EAI_FAMILY;
-
- sin.sin_family = result.ai_family;
- sin.sin_port = htons (port);
- sin.sin_addr.s_addr = inet_addr (nodename);
- /* Duplicate result and addr and return */
- *res = dup_addrinfo (&result, &sin, sizeof sin);
- return (*res == NULL) ? EAI_MEMORY : 0;
- }
-
- errno = 0;
- hp = gethostbyname_ctx (nodename, &ghbnctx);
- if (hp == NULL)
- {
- if (errno != 0)
- {
- free_ghbnctx (&ghbnctx);
- return EAI_SYSTEM;
- }
- code = h_error_ctx (&ghbnctx);
- switch (code)
- {
- case HOST_NOT_FOUND: code = EAI_NODATA; break;
- case NO_DATA: code = EAI_NODATA; break;
-#if defined(NO_ADDRESS) && NO_ADDRESS != NO_DATA
- case NO_ADDRESS: code = EAI_NODATA; break;
-#endif
- case NO_RECOVERY: code = EAI_FAIL; break;
- case TRY_AGAIN: code = EAI_AGAIN; break;
- default: code = EAI_FAIL; break;
- }
- free_ghbnctx (&ghbnctx);
- return code;
- }
-
- /* Check that the address family is acceptable.
- */
- switch (hp->h_addrtype)
- {
- case AF_INET:
- if (!(hints->ai_family == PF_UNSPEC || hints->ai_family == PF_INET))
- goto eai_family;
- break;
-#ifdef USE_IPV6
- case AF_INET6:
- if (!(hints->ai_family == PF_UNSPEC || hints->ai_family == PF_INET6))
- goto eai_family;
- break;
-#endif
- default:
- eai_family:
- free_ghbnctx (&ghbnctx);
- return EAI_FAMILY;
- }
-
- /* For each element pointed to by hp, create an element in the
- result linked list. */
- sai = eai = NULL;
- for (addrs = hp->h_addr_list; *addrs != NULL; addrs++)
- {
- struct sockaddr sa;
- size_t addrlen;
-
- sa.sa_family = hp->h_addrtype;
- switch (hp->h_addrtype)
- {
- case AF_INET:
- ((struct sockaddr_in *) &sa)->sin_port = htons (port);
- memcpy (&((struct sockaddr_in *) &sa)->sin_addr,
- *addrs, hp->h_length);
- addrlen = sizeof (struct sockaddr_in);
- break;
-#ifdef USE_IPV6
- case AF_INET6:
-# if SIN6_LEN
- ((struct sockaddr_in6 *) &sa)->sin6_len = hp->h_length;
-# endif
- ((struct sockaddr_in6 *) &sa)->sin6_port = htons (port);
- memcpy (&((struct sockaddr_in6 *) &sa)->sin6_addr,
- *addrs, hp->h_length);
- addrlen = sizeof (struct sockaddr_in6);
- break;
-#endif
- default:
- continue;
- }
-
- result.ai_family = hp->h_addrtype;
- ai = dup_addrinfo (&result, &sa, addrlen);
- if (ai == NULL)
- {
- free_ghbnctx (&ghbnctx);
- freeaddrinfo (sai);
- return EAI_MEMORY;
- }
- if (sai == NULL)
- sai = ai;
- else
- eai->ai_next = ai;
- eai = ai;
- }
-
- if (sai == NULL)
- {
- free_ghbnctx (&ghbnctx);
- return EAI_NODATA;
- }
-
- if (hints->ai_flags & AI_CANONNAME)
- {
- sai->ai_canonname = malloc (strlen (hp->h_name) + 1);
- if (sai->ai_canonname == NULL)
- {
- free_ghbnctx (&ghbnctx);
- freeaddrinfo (sai);
- return EAI_MEMORY;
- }
- strcpy (sai->ai_canonname, hp->h_name);
- }
-
- free_ghbnctx (&ghbnctx);
- *res = sai;
- return 0;
-}
-
-void
-freeaddrinfo (struct addrinfo *ai)
-{
- struct addrinfo *next;
-
- while (ai != NULL)
- {
- next = ai->ai_next;
- if (ai->ai_canonname != NULL)
- free (ai->ai_canonname);
- if (ai->ai_addr != NULL)
- free (ai->ai_addr);
- free (ai);
- ai = next;
- }
-}
-
-const char *
-gai_strerror (int ecode)
-{
- static const char *eai_descr[] =
- {
- "no error",
- "address family for nodename not supported", /* EAI_ADDRFAMILY */
- "temporary failure in name resolution", /* EAI_AGAIN */
- "invalid value for ai_flags", /* EAI_BADFLAGS */
- "non-recoverable failure in name resolution", /* EAI_FAIL */
- "ai_family not supported", /* EAI_FAMILY */
- "memory allocation failure", /* EAI_MEMORY */
- "no address associated with nodename", /* EAI_NODATA */
- "nodename nor servname provided, or not known", /* EAI_NONAME */
- "servname not supported for ai_socktype", /* EAI_SERVICE */
- "ai_socktype not supported", /* EAI_SOCKTYPE */
- "system error returned in errno", /* EAI_SYSTEM */
- };
-
- if (ecode < 0 || ecode > (int) (sizeof eai_descr/ sizeof eai_descr[0]))
- return "unknown error";
- return eai_descr[ecode];
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 17:02:07 +0000