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Diffstat (limited to 'e-util/e-host-utils.c')
-rw-r--r-- | e-util/e-host-utils.c | 390 |
1 files changed, 0 insertions, 390 deletions
diff --git a/e-util/e-host-utils.c b/e-util/e-host-utils.c deleted file mode 100644 index e1a7296b3d..0000000000 --- a/e-util/e-host-utils.c +++ /dev/null @@ -1,390 +0,0 @@ -/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */ -/* e-host-utils.c - * - * Copyright (C) 2001 Ximian, Inc. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program 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 - * General Public License for more details. - * - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - * - * Author: Chris Toshok, Jeffrey Stedfast - */ - - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#include <glib.h> - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <arpa/inet.h> -#include <errno.h> - -#include "e-host-utils.h" - - -#if !defined (HAVE_GETHOSTBYNAME_R) || !defined (HAVE_GETHOSTBYADDR_R) -G_LOCK_DEFINE_STATIC (gethost_mutex); -#endif - - -#define ALIGN(x) (((x) + (sizeof (char *) - 1)) & ~(sizeof (char *) - 1)) - -#define GETHOST_PROCESS(h, host, buf, buflen, herr) G_STMT_START { \ - int num_aliases = 0, num_addrs = 0; \ - int req_length; \ - char *p; \ - int i; \ - \ - /* check to make sure we have enough room in our buffer */ \ - req_length = 0; \ - if (h->h_aliases) { \ - for (i = 0; h->h_aliases[i]; i++) \ - req_length += strlen (h->h_aliases[i]) + 1; \ - num_aliases = i; \ - } \ - \ - if (h->h_addr_list) { \ - for (i = 0; h->h_addr_list[i]; i++) \ - req_length += h->h_length; \ - num_addrs = i; \ - } \ - \ - req_length += sizeof (char *) * (num_aliases + 1); \ - req_length += sizeof (char *) * (num_addrs + 1); \ - req_length += strlen (h->h_name) + 1; \ - \ - if (buflen < req_length) { \ - *herr = ERANGE; \ - G_UNLOCK (gethost_mutex); \ - return ERANGE; \ - } \ - \ - /* we store the alias/addr pointers in the buffer */ \ - /* their addresses here. */ \ - p = buf; \ - if (num_aliases) { \ - host->h_aliases = (char **) p; \ - p += sizeof (char *) * (num_aliases + 1); \ - } else \ - host->h_aliases = NULL; \ - \ - if (num_addrs) { \ - host->h_addr_list = (char **) p; \ - p += sizeof (char *) * (num_addrs + 1); \ - } else \ - host->h_addr_list = NULL; \ - \ - /* copy the host name into the buffer */ \ - host->h_name = p; \ - strcpy (p, h->h_name); \ - p += strlen (h->h_name) + 1; \ - host->h_addrtype = h->h_addrtype; \ - host->h_length = h->h_length; \ - \ - /* copy the aliases/addresses into the buffer */ \ - /* and assign pointers into the hostent */ \ - *p = 0; \ - if (num_aliases) { \ - for (i = 0; i < num_aliases; i++) { \ - strcpy (p, h->h_aliases[i]); \ - host->h_aliases[i] = p; \ - p += strlen (h->h_aliases[i]); \ - } \ - host->h_aliases[num_aliases] = NULL; \ - } \ - \ - if (num_addrs) { \ - for (i = 0; i < num_addrs; i++) { \ - memcpy (p, h->h_addr_list[i], h->h_length); \ - host->h_addr_list[i] = p; \ - p += h->h_length; \ - } \ - host->h_addr_list[num_addrs] = NULL; \ - } \ -} G_STMT_END - - -#ifdef ENABLE_IPv6 -/* some helpful utils for IPv6 lookups */ -#define IPv6_BUFLEN_MIN (sizeof (char *) * 3) - -static int -ai_to_herr (int error) -{ - switch (error) { - case EAI_NONAME: - case EAI_FAIL: - return HOST_NOT_FOUND; - break; - case EAI_SERVICE: - return NO_DATA; - break; - case EAI_ADDRFAMILY: - return NO_ADDRESS; - break; - case EAI_NODATA: - return NO_DATA; - break; - case EAI_MEMORY: - return ENOMEM; - break; - case EAI_AGAIN: - return TRY_AGAIN; - break; - case EAI_SYSTEM: - return errno; - break; - default: - return NO_RECOVERY; - break; - } -} - -#endif /* ENABLE_IPv6 */ - -/** - * e_gethostbyname_r: - * @name: the host to resolve - * @host: a buffer pointing to a struct hostent to use for storage - * @buf: a buffer to use for hostname storage - * @buflen: the size of @buf - * @herr: a pointer to a variable to store an error code in - * - * Resolves the hostname @name, in a hopefully-reentrant fashion. - * - * Return value: 0 on success, ERANGE if @buflen is too small, - * "something else" otherwise (in which case *@herr will be set to - * one of the gethostbyname() error codes). - **/ -int -e_gethostbyname_r (const char *name, struct hostent *host, - char *buf, size_t buflen, int *herr) -{ -#ifdef ENABLE_IPv6 - struct addrinfo hints, *res; - int retval, len; - char *addr; - - memset (&hints, 0, sizeof (struct addrinfo)); - hints.ai_flags = AI_CANONNAME; - hints.ai_family = PF_UNSPEC; - hints.ai_socktype = 0; - hints.ai_protocol = 0; - - if ((retval = getaddrinfo (name, NULL, &hints, &res)) != 0) { - *herr = ai_to_herr (retval); - return -1; - } - - len = ALIGN (strlen (res->ai_canonname) + 1); - if (buflen < IPv6_BUFLEN_MIN + len + res->ai_addrlen + sizeof (char *)) - return ERANGE; - - /* h_name */ - strcpy (buf, res->ai_canonname); - host->h_name = buf; - buf += len; - - /* h_aliases */ - ((char **) buf)[0] = NULL; - host->h_aliases = (char **) buf; - buf += sizeof (char *); - - /* h_addrtype and h_length */ - host->h_length = res->ai_addrlen; - if (res->ai_family == PF_INET6) { - host->h_addrtype = AF_INET6; - - addr = (char *) &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr; - } else { - host->h_addrtype = AF_INET; - - addr = (char *) &((struct sockaddr_in *) res->ai_addr)->sin_addr; - } - - memcpy (buf, addr, host->h_length); - addr = buf; - buf += ALIGN (host->h_length); - - /* h_addr_list */ - ((char **) buf)[0] = addr; - ((char **) buf)[1] = NULL; - host->h_addr_list = (char **) buf; - - freeaddrinfo (res); - - return 0; -#else /* No support for IPv6 addresses */ -#ifdef HAVE_GETHOSTBYNAME_R -#ifdef GETHOSTBYNAME_R_FIVE_ARGS - if (gethostbyname_r (name, host, buf, buflen, herr)) - return 0; - else - return errno; -#else - struct hostent *hp; - int retval; - - retval = gethostbyname_r (name, host, buf, buflen, &hp, herr); - if (hp != NULL) - *herr = 0; - return retval; -#endif -#else /* No support for gethostbyname_r */ - struct hostent *h; - - G_LOCK (gethost_mutex); - - h = gethostbyname (name); - - if (!h) { - *herr = h_errno; - G_UNLOCK (gethost_mutex); - return -1; - } - - GETHOST_PROCESS (h, host, buf, buflen, herr); - - G_UNLOCK (gethost_mutex); - - return 0; -#endif /* HAVE_GETHOSTBYNAME_R */ -#endif /* ENABLE_IPv6 */ -} - - -/** - * e_gethostbyaddr_r: - * @addr: the addr to resolve - * @addrlen: address length - * @type: AF type - * @host: a buffer pointing to a struct hostent to use for storage - * @buf: a buffer to use for hostname storage - * @buflen: the size of @buf - * @herr: a pointer to a variable to store an error code in - * - * Resolves the address @addr, in a hopefully-reentrant fashion. - * - * Return value: 0 on success, ERANGE if @buflen is too small, - * "something else" otherwise (in which case *@herr will be set to - * one of the gethostbyaddr() error codes). - **/ -int -e_gethostbyaddr_r (const char *addr, int addrlen, int type, struct hostent *host, - char *buf, size_t buflen, int *herr) -{ -#ifdef ENABLE_IPv6 - struct addrinfo hints, *res; - const char *name; - int retval, len; - - if ((name = inet_ntop (type, addr, buf, buflen)) == NULL) { - if (errno == ENOSPC) - return ERANGE; - - return -1; - } - - memset (&hints, 0, sizeof (struct addrinfo)); - hints.ai_flags = AI_CANONNAME; - hints.ai_family = type == AF_INET6 ? PF_INET6 : PF_INET; - hints.ai_socktype = 0; - hints.ai_protocol = 0; - - if ((retval = getaddrinfo (name, NULL, &hints, &res)) != 0) { - *herr = ai_to_herr (retval); - return -1; - } - - len = ALIGN (strlen (res->ai_canonname) + 1); - if (buflen < IPv6_BUFLEN_MIN + len + res->ai_addrlen + sizeof (char *)) - return ERANGE; - - /* h_name */ - strcpy (buf, res->ai_canonname); - host->h_name = buf; - buf += len; - - /* h_aliases */ - ((char **) buf)[0] = NULL; - host->h_aliases = (char **) buf; - buf += sizeof (char *); - - /* h_addrtype and h_length */ - host->h_length = res->ai_addrlen; - if (res->ai_family == PF_INET6) { - host->h_addrtype = AF_INET6; - - addr = (char *) &((struct sockaddr_in6 *) res->ai_addr)->sin6_addr; - } else { - host->h_addrtype = AF_INET; - - addr = (char *) &((struct sockaddr_in *) res->ai_addr)->sin_addr; - } - - memcpy (buf, addr, host->h_length); - addr = buf; - buf += ALIGN (host->h_length); - - /* h_addr_list */ - ((char **) buf)[0] = addr; - ((char **) buf)[1] = NULL; - host->h_addr_list = (char **) buf; - - freeaddrinfo (res); - - return 0; -#else /* No support for IPv6 addresses */ -#ifdef HAVE_GETHOSTBYADDR_R -#ifdef GETHOSTBYADDR_R_SEVEN_ARGS - if (gethostbyaddr_r (addr, addrlen, type, host, buf, buflen, herr)) - return 0; - else - return errno; -#else - struct hostent *hp; - int retval; - - retval = gethostbyaddr_r (addr, addrlen, type, host, buf, buflen, &hp, herr); - if (hp != NULL) - *herr = 0; - return retval; -#endif -#else /* No support for gethostbyaddr_r */ - struct hostent *h; - - G_LOCK (gethost_mutex); - - h = gethostbyaddr (addr, addrlen, type); - - if (!h) { - *herr = h_errno; - G_UNLOCK (gethost_mutex); - return -1; - } - - GETHOST_PROCESS (h, host, buf, buflen, herr); - - G_UNLOCK (gethost_mutex); - - return 0; -#endif /* HAVE_GETHOSTBYADDR_R */ -#endif /* ENABLE_IPv6 */ -} |