[PATCH v2 3/6] iphlpapi: Use DnsQueryConfig() to retrieve the dns servers for the remaining functions.
Signed-off-by: Huw Davies <huw(a)codeweavers.com> --- dlls/iphlpapi/iphlpapi_main.c | 217 ++++++---------------------------- 1 file changed, 38 insertions(+), 179 deletions(-) diff --git a/dlls/iphlpapi/iphlpapi_main.c b/dlls/iphlpapi/iphlpapi_main.c index 2c8c1644b78..40cf358d73f 100644 --- a/dlls/iphlpapi/iphlpapi_main.c +++ b/dlls/iphlpapi/iphlpapi_main.c @@ -1223,34 +1223,6 @@ static ULONG adapterAddressesFromIndex(ULONG family, ULONG flags, IF_INDEX index return ERROR_SUCCESS; } -static void sockaddr_in_to_WS_storage( SOCKADDR_STORAGE *dst, const struct sockaddr_in *src ) -{ - SOCKADDR_IN *s = (SOCKADDR_IN *)dst; - - s->sin_family = WS_AF_INET; - s->sin_port = src->sin_port; - memcpy( &s->sin_addr, &src->sin_addr, sizeof(IN_ADDR) ); - memset( (char *)s + FIELD_OFFSET( SOCKADDR_IN, sin_zero ), 0, - sizeof(SOCKADDR_STORAGE) - FIELD_OFFSET( SOCKADDR_IN, sin_zero) ); -} - -#if defined(HAVE_STRUCT___RES_STATE__U__EXT_NSCOUNT6) || \ - (defined(HAVE___RES_GET_STATE) && defined(HAVE___RES_GETSERVERS)) || \ - defined(HAVE_RES_GETSERVERS) -static void sockaddr_in6_to_WS_storage( SOCKADDR_STORAGE *dst, const struct sockaddr_in6 *src ) -{ - SOCKADDR_IN6 *s = (SOCKADDR_IN6 *)dst; - - s->sin6_family = WS_AF_INET6; - s->sin6_port = src->sin6_port; - s->sin6_flowinfo = src->sin6_flowinfo; - memcpy( &s->sin6_addr, &src->sin6_addr, sizeof(IN6_ADDR) ); - s->sin6_scope_id = src->sin6_scope_id; - memset( (char *)s + sizeof(SOCKADDR_IN6), 0, - sizeof(SOCKADDR_STORAGE) - sizeof(SOCKADDR_IN6) ); -} -#endif - #ifdef HAVE_STRUCT___RES_STATE /* call res_init() just once because of a bug in Mac OS X 10.4 */ /* Call once per thread on systems that have per-thread _res. */ @@ -1270,129 +1242,6 @@ static void initialise_resolver(void) res_init(); LeaveCriticalSection(&res_init_cs); } - -#ifdef HAVE_RES_GETSERVERS -static int get_dns_servers( SOCKADDR_STORAGE *servers, int num, BOOL ip4_only ) -{ - struct __res_state *state = &_res; - int i, found = 0, total; - SOCKADDR_STORAGE *addr = servers; - union res_sockaddr_union *buf; - - initialise_resolver(); - - total = res_getservers( state, NULL, 0 ); - - if ((!servers || !num) && !ip4_only) return total; - - buf = HeapAlloc( GetProcessHeap(), 0, total * sizeof(union res_sockaddr_union) ); - total = res_getservers( state, buf, total ); - - for (i = 0; i < total; i++) - { - if (buf[i].sin6.sin6_family == AF_INET6 && ip4_only) continue; - if (buf[i].sin.sin_family != AF_INET && buf[i].sin6.sin6_family != AF_INET6) continue; - - found++; - if (!servers || !num) continue; - - if (buf[i].sin6.sin6_family == AF_INET6) - { - sockaddr_in6_to_WS_storage( addr, &buf[i].sin6 ); - } - else - { - sockaddr_in_to_WS_storage( addr, &buf[i].sin ); - } - if (++addr >= servers + num) break; - } - - HeapFree( GetProcessHeap(), 0, buf ); - return found; -} -#else - -static int get_dns_servers( SOCKADDR_STORAGE *servers, int num, BOOL ip4_only ) -{ - int i, ip6_count = 0; - SOCKADDR_STORAGE *addr; - - initialise_resolver(); - -#ifdef HAVE_STRUCT___RES_STATE__U__EXT_NSCOUNT6 - ip6_count = _res._u._ext.nscount6; -#endif - - if (!servers || !num) - { - num = _res.nscount; - if (ip4_only) num -= ip6_count; - return num; - } - - for (i = 0, addr = servers; addr < (servers + num) && i < _res.nscount; i++) - { -#ifdef HAVE_STRUCT___RES_STATE__U__EXT_NSCOUNT6 - if (_res._u._ext.nsaddrs[i] && _res._u._ext.nsaddrs[i]->sin6_family == AF_INET6) - { - if (ip4_only) continue; - sockaddr_in6_to_WS_storage( addr, _res._u._ext.nsaddrs[i] ); - } - else -#endif - { - sockaddr_in_to_WS_storage( addr, _res.nsaddr_list + i ); - } - addr++; - } - return addr - servers; -} -#endif -#elif defined(HAVE___RES_GET_STATE) && defined(HAVE___RES_GETSERVERS) - -static int get_dns_servers( SOCKADDR_STORAGE *servers, int num, BOOL ip4_only ) -{ - extern struct res_state *__res_get_state( void ); - extern int __res_getservers( struct res_state *, struct sockaddr_storage *, int ); - struct res_state *state = __res_get_state(); - int i, found = 0, total = __res_getservers( state, NULL, 0 ); - SOCKADDR_STORAGE *addr = servers; - struct sockaddr_storage *buf; - - if ((!servers || !num) && !ip4_only) return total; - - buf = HeapAlloc( GetProcessHeap(), 0, total * sizeof(struct sockaddr_storage) ); - total = __res_getservers( state, buf, total ); - - for (i = 0; i < total; i++) - { - if (buf[i].ss_family == AF_INET6 && ip4_only) continue; - if (buf[i].ss_family != AF_INET && buf[i].ss_family != AF_INET6) continue; - - found++; - if (!servers || !num) continue; - - if (buf[i].ss_family == AF_INET6) - { - sockaddr_in6_to_WS_storage( addr, (struct sockaddr_in6 *)(buf + i) ); - } - else - { - sockaddr_in_to_WS_storage( addr, (struct sockaddr_in *)(buf + i) ); - } - if (++addr >= servers + num) break; - } - - HeapFree( GetProcessHeap(), 0, buf ); - return found; -} -#else - -static int get_dns_servers( SOCKADDR_STORAGE *servers, int num, BOOL ip4_only ) -{ - FIXME("Unimplemented on this system\n"); - return 0; -} #endif static DWORD dns_servers_query_code( ULONG family ) @@ -2528,45 +2377,55 @@ DWORD WINAPI GetIpNetTable(PMIB_IPNETTABLE pIpNetTable, PULONG pdwSize, BOOL bOr * a single server address may be placed at list if *len is at least * sizeof(IP_ADDR_STRING) long. Otherwise, list->Next is set to firstDynamic, * and assumes that all remaining DNS servers are contiguously located - * beginning at firstDynamic. On input, *len is assumed to be the total number + * beginning at second. On input, *len is assumed to be the total number * of bytes available for all DNS servers, and is ignored if list is NULL. * On return, *len is set to the total number of bytes required for all DNS * servers. * Returns ERROR_BUFFER_OVERFLOW if *len is insufficient, * ERROR_SUCCESS otherwise. */ -static DWORD get_dns_server_list(PIP_ADDR_STRING list, - PIP_ADDR_STRING firstDynamic, DWORD *len) +static DWORD get_dns_server_list( IP_ADDR_STRING *list, IP_ADDR_STRING *second, DWORD *len ) { - DWORD size; - int num = get_dns_servers( NULL, 0, TRUE ); + char buf[FIELD_OFFSET(IP4_ARRAY, AddrArray[3])]; + IP4_ARRAY *servers = (IP4_ARRAY *)buf; + DWORD needed, num, err, i, array_len = sizeof(buf); + IP_ADDR_STRING *ptr; - size = num * sizeof(IP_ADDR_STRING); - if (!list || *len < size) { - *len = size; - return ERROR_BUFFER_OVERFLOW; - } - *len = size; - if (num > 0) { - PIP_ADDR_STRING ptr; - int i; - SOCKADDR_STORAGE *addr = HeapAlloc( GetProcessHeap(), 0, num * sizeof(SOCKADDR_STORAGE) ); + for (;;) + { + err = DnsQueryConfig( DnsConfigDnsServerList, 0, NULL, NULL, servers, &array_len ); + num = (array_len - FIELD_OFFSET(IP4_ARRAY, AddrArray[0])) / sizeof(IP4_ADDRESS); + needed = num * sizeof(IP_ADDR_STRING); + if (!list || *len < needed) + { + *len = needed; + err = ERROR_BUFFER_OVERFLOW; + goto err; + } + if (!err) break; - get_dns_servers( addr, num, TRUE ); + if ((char *)servers != buf) heap_free( servers ); + servers = heap_alloc( array_len ); + if (!servers) + { + err = ERROR_NOT_ENOUGH_MEMORY; + goto err; + } + } - for (i = 0, ptr = list; i < num; i++, ptr = ptr->Next) { - RtlIpv4AddressToStringA((IN_ADDR *)&((struct sockaddr_in *)(addr + i))->sin_addr.s_addr, - ptr->IpAddress.String); - if (i == num - 1) - ptr->Next = NULL; - else if (i == 0) - ptr->Next = firstDynamic; - else - ptr->Next = (PIP_ADDR_STRING)((PBYTE)ptr + sizeof(IP_ADDR_STRING)); + *len = needed; + + for (i = 0, ptr = list; i < num; i++, ptr = ptr->Next) + { + RtlIpv4AddressToStringA( (IN_ADDR *)&servers->AddrArray[i], ptr->IpAddress.String ); + if (i == num - 1) ptr->Next = NULL; + else if (i == 0) ptr->Next = second; + else ptr->Next = ptr + 1; } - HeapFree( GetProcessHeap(), 0, addr ); - } - return ERROR_SUCCESS; + +err: + if ((char *)servers != buf) heap_free( servers ); + return err; } /****************************************************************** -- 2.23.0
participants (1)
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Huw Davies