mirror of
https://github.com/moparisthebest/curl
synced 2024-12-22 16:18:48 -05:00
212 lines
6.2 KiB
C
212 lines
6.2 KiB
C
/*****************************************************************************
|
|
* _ _ ____ _
|
|
* Project ___| | | | _ \| |
|
|
* / __| | | | |_) | |
|
|
* | (__| |_| | _ <| |___
|
|
* \___|\___/|_| \_\_____|
|
|
*
|
|
* Copyright (C) 2000, Daniel Stenberg, <daniel@haxx.se>, et al.
|
|
*
|
|
* In order to be useful for every potential user, curl and libcurl are
|
|
* dual-licensed under the MPL and the MIT/X-derivate licenses.
|
|
*
|
|
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
|
* copies of the Software, and permit persons to whom the Software is
|
|
* furnished to do so, under the terms of the MPL or the MIT/X-derivate
|
|
* licenses. You may pick one of these licenses.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
* $Id$
|
|
*****************************************************************************/
|
|
|
|
#include "setup.h"
|
|
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
|
|
#define _REENTRANT
|
|
|
|
#if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
|
|
#include <winsock.h>
|
|
#else
|
|
#ifdef HAVE_SYS_TYPES_H
|
|
#include <sys/types.h>
|
|
#endif
|
|
#ifdef HAVE_SYS_SOCKET_H
|
|
#include <sys/socket.h>
|
|
#endif
|
|
#ifdef HAVE_NETINET_IN_H
|
|
#include <netinet/in.h>
|
|
#endif
|
|
#ifdef HAVE_NETDB_H
|
|
#include <netdb.h>
|
|
#endif
|
|
#ifdef HAVE_ARPA_INET_H
|
|
#include <arpa/inet.h>
|
|
#endif
|
|
#endif
|
|
|
|
#include "urldata.h"
|
|
#include "sendf.h"
|
|
|
|
#if defined(HAVE_INET_NTOA_R) && !defined(HAVE_INET_NTOA_R_DECL)
|
|
#include "inet_ntoa_r.h"
|
|
#endif
|
|
|
|
/* The last #include file should be: */
|
|
#ifdef MALLOCDEBUG
|
|
#include "memdebug.h"
|
|
#endif
|
|
|
|
/* --- resolve name or IP-number --- */
|
|
|
|
static char *MakeIP(unsigned long num,char *addr, int addr_len)
|
|
{
|
|
#if defined(HAVE_INET_NTOA) || defined(HAVE_INET_NTOA_R)
|
|
struct in_addr in;
|
|
in.s_addr = htonl(num);
|
|
|
|
#if defined(HAVE_INET_NTOA_R)
|
|
inet_ntoa_r(in,addr,addr_len);
|
|
#else
|
|
strncpy(addr,inet_ntoa(in),addr_len);
|
|
#endif
|
|
#else
|
|
unsigned char *paddr;
|
|
|
|
num = htonl(num); /* htonl() added to avoid endian probs */
|
|
paddr = (unsigned char *)#
|
|
sprintf(addr, "%u.%u.%u.%u", paddr[0], paddr[1], paddr[2], paddr[3]);
|
|
#endif
|
|
return (addr);
|
|
}
|
|
|
|
#ifdef ENABLE_IPV6
|
|
struct addrinfo *Curl_getaddrinfo(struct UrlData *data,
|
|
char *hostname,
|
|
int port)
|
|
{
|
|
struct addrinfo hints, *res;
|
|
int error;
|
|
char sbuf[NI_MAXSERV];
|
|
|
|
memset(&hints, 0, sizeof(hints));
|
|
hints.ai_family = PF_UNSPEC;
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
hints.ai_flags = AI_CANONNAME;
|
|
snprintf(sbuf, sizeof(sbuf), "%d", port);
|
|
error = getaddrinfo(hostname, sbuf, &hints, &res);
|
|
if (error) {
|
|
infof(data, "getaddrinfo(3) failed for %s\n", hostname);
|
|
return NULL;
|
|
}
|
|
return res;
|
|
}
|
|
#endif
|
|
|
|
/* The original code to this function was once stolen from the Dancer source
|
|
code, written by Bjorn Reese, it has since been patched and modified
|
|
considerably. */
|
|
|
|
#ifndef INADDR_NONE
|
|
#define INADDR_NONE (unsigned long) ~0
|
|
#endif
|
|
|
|
struct hostent *Curl_gethost(struct UrlData *data,
|
|
char *hostname,
|
|
char **bufp)
|
|
{
|
|
struct hostent *h = NULL;
|
|
unsigned long in;
|
|
int ret; /* this variable is unused on several platforms but used on some */
|
|
|
|
#define CURL_NAMELOOKUP_SIZE 9000
|
|
|
|
/* Allocate enough memory to hold the full name information structs and
|
|
* everything. OSF1 is known to require at least 8872 bytes. The buffer
|
|
* required for storing all possible aliases and IP numbers is according to
|
|
* Stevens' Unix Network Programming 2nd editor, p. 304: 8192 bytes! */
|
|
char *buf = (char *)malloc(CURL_NAMELOOKUP_SIZE);
|
|
if(!buf)
|
|
return NULL; /* major failure */
|
|
*bufp = buf;
|
|
|
|
if ( (in=inet_addr(hostname)) != INADDR_NONE ) {
|
|
struct in_addr *addrentry;
|
|
|
|
h = (struct hostent*)buf;
|
|
h->h_addr_list = (char**)(buf + sizeof(*h));
|
|
addrentry = (struct in_addr*)(h->h_addr_list + 2);
|
|
addrentry->s_addr = in;
|
|
h->h_addr_list[0] = (char*)addrentry;
|
|
h->h_addr_list[1] = NULL;
|
|
h->h_addrtype = AF_INET;
|
|
h->h_length = sizeof(*addrentry);
|
|
h->h_name = *(h->h_addr_list) + h->h_length;
|
|
/* bad one h->h_name = (char*)(h->h_addr_list + h->h_length); */
|
|
MakeIP(ntohl(in),h->h_name, CURL_NAMELOOKUP_SIZE - (long)(h->h_name) + (long)buf);
|
|
}
|
|
#if defined(HAVE_GETHOSTBYNAME_R)
|
|
else {
|
|
int h_errnop;
|
|
/* Workaround for gethostbyname_r bug in qnx nto. It is also _required_
|
|
for some of these functions. */
|
|
memset(buf, 0, CURL_NAMELOOKUP_SIZE);
|
|
#ifdef HAVE_GETHOSTBYNAME_R_5
|
|
/* Solaris, IRIX and more */
|
|
if ((h = gethostbyname_r(hostname,
|
|
(struct hostent *)buf,
|
|
buf + sizeof(struct hostent),
|
|
CURL_NAMELOOKUP_SIZE - sizeof(struct hostent),
|
|
&h_errnop)) == NULL )
|
|
#endif
|
|
#ifdef HAVE_GETHOSTBYNAME_R_6
|
|
/* Linux */
|
|
if( gethostbyname_r(hostname,
|
|
(struct hostent *)buf,
|
|
buf + sizeof(struct hostent),
|
|
CURL_NAMELOOKUP_SIZE - sizeof(struct hostent),
|
|
&h, /* DIFFERENCE */
|
|
&h_errnop))
|
|
#endif
|
|
#ifdef HAVE_GETHOSTBYNAME_R_3
|
|
/* AIX, Digital Unix, HPUX 10, more? */
|
|
|
|
if(CURL_NAMELOOKUP_SIZE >=
|
|
(sizeof(struct hostent)+sizeof(struct hostent_data)))
|
|
|
|
/* August 22nd, 2000: Albert Chin-A-Young brought an updated version
|
|
* that should work! September 20: Richard Prescott worked on the buffer
|
|
* size dilemma. */
|
|
|
|
ret = gethostbyname_r(hostname,
|
|
(struct hostent *)buf,
|
|
(struct hostent_data *)(buf + sizeof(struct hostent)));
|
|
else
|
|
ret = -1; /* failure, too smallish buffer size */
|
|
|
|
/* result expected in h */
|
|
h = (struct hostent*)buf;
|
|
h_errnop= errno; /* we don't deal with this, but set it anyway */
|
|
if(ret)
|
|
#endif
|
|
{
|
|
infof(data, "gethostbyname_r(2) failed for %s\n", hostname);
|
|
h = NULL; /* set return code to NULL */
|
|
free(buf);
|
|
*bufp=NULL;
|
|
}
|
|
#else
|
|
else {
|
|
if ((h = gethostbyname(hostname)) == NULL ) {
|
|
infof(data, "gethostbyname(2) failed for %s\n", hostname);
|
|
free(buf);
|
|
*bufp=NULL;
|
|
}
|
|
#endif
|
|
}
|
|
return (h);
|
|
}
|