| /* $Id$ */ |
| /* |
| * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * 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 |
| */ |
| #include <pj/addr_resolv.h> |
| #include <pj/assert.h> |
| #include <pj/string.h> |
| #include <pj/errno.h> |
| #include <pj/ip_helper.h> |
| #include <pj/compat/socket.h> |
| |
| #if defined(PJ_GETADDRINFO_USE_CFHOST) && PJ_GETADDRINFO_USE_CFHOST!=0 |
| # include <CoreFoundation/CFString.h> |
| # include <CFNetwork/CFHost.h> |
| #endif |
| |
| PJ_DEF(pj_status_t) pj_gethostbyname(const pj_str_t *hostname, pj_hostent *phe) |
| { |
| struct hostent *he; |
| char copy[PJ_MAX_HOSTNAME]; |
| |
| pj_assert(hostname && hostname ->slen < PJ_MAX_HOSTNAME); |
| |
| if (hostname->slen >= PJ_MAX_HOSTNAME) |
| return PJ_ENAMETOOLONG; |
| |
| pj_memcpy(copy, hostname->ptr, hostname->slen); |
| copy[ hostname->slen ] = '\0'; |
| |
| he = gethostbyname(copy); |
| if (!he) { |
| return PJ_ERESOLVE; |
| /* DO NOT use pj_get_netos_error() since host resolution error |
| * is reported in h_errno instead of errno! |
| return pj_get_netos_error(); |
| */ |
| } |
| |
| phe->h_name = he->h_name; |
| phe->h_aliases = he->h_aliases; |
| phe->h_addrtype = he->h_addrtype; |
| phe->h_length = he->h_length; |
| phe->h_addr_list = he->h_addr_list; |
| |
| return PJ_SUCCESS; |
| } |
| |
| /* Resolve IPv4/IPv6 address */ |
| PJ_DEF(pj_status_t) pj_getaddrinfo(int af, const pj_str_t *nodename, |
| unsigned *count, pj_addrinfo ai[]) |
| { |
| #if defined(PJ_SOCK_HAS_GETADDRINFO) && PJ_SOCK_HAS_GETADDRINFO!=0 |
| char nodecopy[PJ_MAX_HOSTNAME]; |
| pj_bool_t has_addr = PJ_FALSE; |
| unsigned i; |
| #if defined(PJ_GETADDRINFO_USE_CFHOST) && PJ_GETADDRINFO_USE_CFHOST!=0 |
| CFStringRef hostname; |
| CFHostRef hostRef; |
| pj_status_t status = PJ_SUCCESS; |
| #else |
| int rc; |
| struct addrinfo hint, *res, *orig_res; |
| #endif |
| |
| PJ_ASSERT_RETURN(nodename && count && *count && ai, PJ_EINVAL); |
| PJ_ASSERT_RETURN(nodename->ptr && nodename->slen, PJ_EINVAL); |
| PJ_ASSERT_RETURN(af==PJ_AF_INET || af==PJ_AF_INET6 || |
| af==PJ_AF_UNSPEC, PJ_EINVAL); |
| |
| /* Check if nodename is IP address */ |
| pj_bzero(&ai[0], sizeof(ai[0])); |
| if ((af==PJ_AF_INET || af==PJ_AF_UNSPEC) && |
| pj_inet_pton(PJ_AF_INET, nodename, |
| &ai[0].ai_addr.ipv4.sin_addr) == PJ_SUCCESS) |
| { |
| af = PJ_AF_INET; |
| has_addr = PJ_TRUE; |
| } else if ((af==PJ_AF_INET6 || af==PJ_AF_UNSPEC) && |
| pj_inet_pton(PJ_AF_INET6, nodename, |
| &ai[0].ai_addr.ipv6.sin6_addr) == PJ_SUCCESS) |
| { |
| af = PJ_AF_INET6; |
| has_addr = PJ_TRUE; |
| } |
| |
| if (has_addr) { |
| pj_str_t tmp; |
| |
| tmp.ptr = ai[0].ai_canonname; |
| pj_strncpy_with_null(&tmp, nodename, PJ_MAX_HOSTNAME); |
| ai[0].ai_addr.addr.sa_family = (pj_uint16_t)af; |
| *count = 1; |
| |
| return PJ_SUCCESS; |
| } |
| |
| /* Copy node name to null terminated string. */ |
| if (nodename->slen >= PJ_MAX_HOSTNAME) |
| return PJ_ENAMETOOLONG; |
| pj_memcpy(nodecopy, nodename->ptr, nodename->slen); |
| nodecopy[nodename->slen] = '\0'; |
| |
| #if defined(PJ_GETADDRINFO_USE_CFHOST) && PJ_GETADDRINFO_USE_CFHOST!=0 |
| hostname = CFStringCreateWithCStringNoCopy(kCFAllocatorDefault, nodecopy, |
| kCFStringEncodingASCII, |
| kCFAllocatorNull); |
| hostRef = CFHostCreateWithName(kCFAllocatorDefault, hostname); |
| if (CFHostStartInfoResolution(hostRef, kCFHostAddresses, nil)) { |
| CFArrayRef addrRef = CFHostGetAddressing(hostRef, nil); |
| i = 0; |
| if (addrRef != nil) { |
| CFIndex idx, naddr; |
| |
| naddr = CFArrayGetCount(addrRef); |
| for (idx = 0; idx < naddr && i < *count; idx++) { |
| struct sockaddr *addr; |
| |
| addr = (struct sockaddr *) |
| CFDataGetBytePtr(CFArrayGetValueAtIndex(addrRef, idx)); |
| /* This should not happen. */ |
| pj_assert(addr); |
| |
| /* Ignore unwanted address families */ |
| if (af!=PJ_AF_UNSPEC && addr->sa_family != af) |
| continue; |
| |
| /* Store canonical name */ |
| pj_ansi_strcpy(ai[i].ai_canonname, nodecopy); |
| |
| /* Store address */ |
| PJ_ASSERT_ON_FAIL(sizeof(*addr) <= sizeof(pj_sockaddr), |
| continue); |
| pj_memcpy(&ai[i].ai_addr, addr, sizeof(*addr)); |
| PJ_SOCKADDR_RESET_LEN(&ai[i].ai_addr); |
| |
| i++; |
| } |
| } |
| |
| *count = i; |
| } else { |
| status = PJ_ERESOLVE; |
| } |
| |
| CFRelease(hostRef); |
| CFRelease(hostname); |
| |
| return status; |
| #else |
| /* Call getaddrinfo() */ |
| pj_bzero(&hint, sizeof(hint)); |
| hint.ai_family = af; |
| |
| rc = getaddrinfo(nodecopy, NULL, &hint, &res); |
| if (rc != 0) |
| return PJ_ERESOLVE; |
| |
| orig_res = res; |
| |
| /* Enumerate each item in the result */ |
| for (i=0; i<*count && res; res=res->ai_next) { |
| /* Ignore unwanted address families */ |
| if (af!=PJ_AF_UNSPEC && res->ai_family != af) |
| continue; |
| |
| /* Store canonical name (possibly truncating the name) */ |
| if (res->ai_canonname) { |
| pj_ansi_strncpy(ai[i].ai_canonname, res->ai_canonname, |
| sizeof(ai[i].ai_canonname)); |
| ai[i].ai_canonname[sizeof(ai[i].ai_canonname)-1] = '\0'; |
| } else { |
| pj_ansi_strcpy(ai[i].ai_canonname, nodecopy); |
| } |
| |
| /* Store address */ |
| PJ_ASSERT_ON_FAIL(res->ai_addrlen <= sizeof(pj_sockaddr), continue); |
| pj_memcpy(&ai[i].ai_addr, res->ai_addr, res->ai_addrlen); |
| PJ_SOCKADDR_RESET_LEN(&ai[i].ai_addr); |
| |
| /* Next slot */ |
| ++i; |
| } |
| |
| *count = i; |
| |
| freeaddrinfo(orig_res); |
| |
| /* Done */ |
| return PJ_SUCCESS; |
| #endif |
| |
| #else /* PJ_SOCK_HAS_GETADDRINFO */ |
| pj_bool_t has_addr = PJ_FALSE; |
| |
| PJ_ASSERT_RETURN(count && *count, PJ_EINVAL); |
| |
| /* Check if nodename is IP address */ |
| pj_bzero(&ai[0], sizeof(ai[0])); |
| if ((af==PJ_AF_INET || af==PJ_AF_UNSPEC) && |
| pj_inet_pton(PJ_AF_INET, nodename, |
| &ai[0].ai_addr.ipv4.sin_addr) == PJ_SUCCESS) |
| { |
| af = PJ_AF_INET; |
| has_addr = PJ_TRUE; |
| } |
| else if ((af==PJ_AF_INET6 || af==PJ_AF_UNSPEC) && |
| pj_inet_pton(PJ_AF_INET6, nodename, |
| &ai[0].ai_addr.ipv6.sin6_addr) == PJ_SUCCESS) |
| { |
| af = PJ_AF_INET6; |
| has_addr = PJ_TRUE; |
| } |
| |
| if (has_addr) { |
| pj_str_t tmp; |
| |
| tmp.ptr = ai[0].ai_canonname; |
| pj_strncpy_with_null(&tmp, nodename, PJ_MAX_HOSTNAME); |
| ai[0].ai_addr.addr.sa_family = (pj_uint16_t)af; |
| *count = 1; |
| |
| return PJ_SUCCESS; |
| } |
| |
| if (af == PJ_AF_INET || af == PJ_AF_UNSPEC) { |
| pj_hostent he; |
| unsigned i, max_count; |
| pj_status_t status; |
| |
| /* VC6 complains that "he" is uninitialized */ |
| #ifdef _MSC_VER |
| pj_bzero(&he, sizeof(he)); |
| #endif |
| |
| status = pj_gethostbyname(nodename, &he); |
| if (status != PJ_SUCCESS) |
| return status; |
| |
| max_count = *count; |
| *count = 0; |
| |
| pj_bzero(ai, max_count * sizeof(pj_addrinfo)); |
| |
| for (i=0; he.h_addr_list[i] && *count<max_count; ++i) { |
| pj_ansi_strncpy(ai[*count].ai_canonname, he.h_name, |
| sizeof(ai[*count].ai_canonname)); |
| ai[*count].ai_canonname[sizeof(ai[*count].ai_canonname)-1] = '\0'; |
| |
| ai[*count].ai_addr.ipv4.sin_family = PJ_AF_INET; |
| pj_memcpy(&ai[*count].ai_addr.ipv4.sin_addr, |
| he.h_addr_list[i], he.h_length); |
| PJ_SOCKADDR_RESET_LEN(&ai[*count].ai_addr); |
| |
| (*count)++; |
| } |
| |
| return PJ_SUCCESS; |
| |
| } else { |
| /* IPv6 is not supported */ |
| *count = 0; |
| |
| return PJ_EIPV6NOTSUP; |
| } |
| #endif /* PJ_SOCK_HAS_GETADDRINFO */ |
| } |
| |