| 1 | /***************************************************************************
|
|---|
| 2 | * _ _ ____ _
|
|---|
| 3 | * Project ___| | | | _ \| |
|
|---|
| 4 | * / __| | | | |_) | |
|
|---|
| 5 | * | (__| |_| | _ <| |___
|
|---|
| 6 | * \___|\___/|_| \_\_____|
|
|---|
| 7 | *
|
|---|
| 8 | * Copyright (C) Daniel Stenberg, <[email protected]>, et al.
|
|---|
| 9 | *
|
|---|
| 10 | * This software is licensed as described in the file COPYING, which
|
|---|
| 11 | * you should have received as part of this distribution. The terms
|
|---|
| 12 | * are also available at https://curl.se/docs/copyright.html.
|
|---|
| 13 | *
|
|---|
| 14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
|---|
| 15 | * copies of the Software, and permit persons to whom the Software is
|
|---|
| 16 | * furnished to do so, under the terms of the COPYING file.
|
|---|
| 17 | *
|
|---|
| 18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|---|
| 19 | * KIND, either express or implied.
|
|---|
| 20 | *
|
|---|
| 21 | * SPDX-License-Identifier: curl
|
|---|
| 22 | *
|
|---|
| 23 | ***************************************************************************/
|
|---|
| 24 |
|
|---|
| 25 | #include "curl_setup.h"
|
|---|
| 26 |
|
|---|
| 27 | /***********************************************************************
|
|---|
| 28 | * Only for IPv6-enabled builds
|
|---|
| 29 | **********************************************************************/
|
|---|
| 30 | #ifdef CURLRES_IPV6
|
|---|
| 31 |
|
|---|
| 32 | #ifdef HAVE_NETINET_IN_H
|
|---|
| 33 | #include <netinet/in.h>
|
|---|
| 34 | #endif
|
|---|
| 35 | #ifdef HAVE_NETDB_H
|
|---|
| 36 | #include <netdb.h>
|
|---|
| 37 | #endif
|
|---|
| 38 | #ifdef HAVE_ARPA_INET_H
|
|---|
| 39 | #include <arpa/inet.h>
|
|---|
| 40 | #endif
|
|---|
| 41 | #ifdef __VMS
|
|---|
| 42 | #include <in.h>
|
|---|
| 43 | #include <inet.h>
|
|---|
| 44 | #endif
|
|---|
| 45 |
|
|---|
| 46 | #include "urldata.h"
|
|---|
| 47 | #include "sendf.h"
|
|---|
| 48 | #include "hostip.h"
|
|---|
| 49 | #include "hash.h"
|
|---|
| 50 | #include "share.h"
|
|---|
| 51 | #include "url.h"
|
|---|
| 52 | #include "inet_pton.h"
|
|---|
| 53 | #include "connect.h"
|
|---|
| 54 | /* The last 3 #include files should be in this order */
|
|---|
| 55 | #include "curl_printf.h"
|
|---|
| 56 | #include "curl_memory.h"
|
|---|
| 57 | #include "memdebug.h"
|
|---|
| 58 |
|
|---|
| 59 | /*
|
|---|
| 60 | * Curl_ipvalid() checks what CURL_IPRESOLVE_* requirements that might've
|
|---|
| 61 | * been set and returns TRUE if they are OK.
|
|---|
| 62 | */
|
|---|
| 63 | bool Curl_ipvalid(struct Curl_easy *data, struct connectdata *conn)
|
|---|
| 64 | {
|
|---|
| 65 | if(conn->ip_version == CURL_IPRESOLVE_V6)
|
|---|
| 66 | return Curl_ipv6works(data);
|
|---|
| 67 |
|
|---|
| 68 | return TRUE;
|
|---|
| 69 | }
|
|---|
| 70 |
|
|---|
| 71 | #if defined(CURLRES_SYNCH)
|
|---|
| 72 |
|
|---|
| 73 | #ifdef DEBUG_ADDRINFO
|
|---|
| 74 | static void dump_addrinfo(const struct Curl_addrinfo *ai)
|
|---|
| 75 | {
|
|---|
| 76 | printf("dump_addrinfo:\n");
|
|---|
| 77 | for(; ai; ai = ai->ai_next) {
|
|---|
| 78 | char buf[INET6_ADDRSTRLEN];
|
|---|
| 79 | printf(" fam %2d, CNAME %s, ",
|
|---|
| 80 | ai->ai_family, ai->ai_canonname ? ai->ai_canonname : "<none>");
|
|---|
| 81 | Curl_printable_address(ai, buf, sizeof(buf));
|
|---|
| 82 | printf("%s\n", buf);
|
|---|
| 83 | }
|
|---|
| 84 | }
|
|---|
| 85 | #else
|
|---|
| 86 | #define dump_addrinfo(x) Curl_nop_stmt
|
|---|
| 87 | #endif
|
|---|
| 88 |
|
|---|
| 89 | /*
|
|---|
| 90 | * Curl_getaddrinfo() when built IPv6-enabled (non-threading and
|
|---|
| 91 | * non-ares version).
|
|---|
| 92 | *
|
|---|
| 93 | * Returns name information about the given hostname and port number. If
|
|---|
| 94 | * successful, the 'addrinfo' is returned and the fourth argument will point
|
|---|
| 95 | * to memory we need to free after use. That memory *MUST* be freed with
|
|---|
| 96 | * Curl_freeaddrinfo(), nothing else.
|
|---|
| 97 | */
|
|---|
| 98 | struct Curl_addrinfo *Curl_getaddrinfo(struct Curl_easy *data,
|
|---|
| 99 | const char *hostname,
|
|---|
| 100 | int port,
|
|---|
| 101 | int *waitp)
|
|---|
| 102 | {
|
|---|
| 103 | struct addrinfo hints;
|
|---|
| 104 | struct Curl_addrinfo *res;
|
|---|
| 105 | int error;
|
|---|
| 106 | char sbuf[12];
|
|---|
| 107 | char *sbufptr = NULL;
|
|---|
| 108 | #ifndef USE_RESOLVE_ON_IPS
|
|---|
| 109 | char addrbuf[128];
|
|---|
| 110 | #endif
|
|---|
| 111 | int pf = PF_INET;
|
|---|
| 112 |
|
|---|
| 113 | *waitp = 0; /* synchronous response only */
|
|---|
| 114 |
|
|---|
| 115 | if((data->conn->ip_version != CURL_IPRESOLVE_V4) && Curl_ipv6works(data))
|
|---|
| 116 | /* The stack seems to be IPv6-enabled */
|
|---|
| 117 | pf = PF_UNSPEC;
|
|---|
| 118 |
|
|---|
| 119 | memset(&hints, 0, sizeof(hints));
|
|---|
| 120 | hints.ai_family = pf;
|
|---|
| 121 | hints.ai_socktype = (data->conn->transport == TRNSPRT_TCP) ?
|
|---|
| 122 | SOCK_STREAM : SOCK_DGRAM;
|
|---|
| 123 |
|
|---|
| 124 | #ifndef USE_RESOLVE_ON_IPS
|
|---|
| 125 | /*
|
|---|
| 126 | * The AI_NUMERICHOST must not be set to get synthesized IPv6 address from
|
|---|
| 127 | * an IPv4 address on iOS and Mac OS X.
|
|---|
| 128 | */
|
|---|
| 129 | if((1 == Curl_inet_pton(AF_INET, hostname, addrbuf)) ||
|
|---|
| 130 | (1 == Curl_inet_pton(AF_INET6, hostname, addrbuf))) {
|
|---|
| 131 | /* the given address is numerical only, prevent a reverse lookup */
|
|---|
| 132 | hints.ai_flags = AI_NUMERICHOST;
|
|---|
| 133 | }
|
|---|
| 134 | #endif
|
|---|
| 135 |
|
|---|
| 136 | if(port) {
|
|---|
| 137 | msnprintf(sbuf, sizeof(sbuf), "%d", port);
|
|---|
| 138 | sbufptr = sbuf;
|
|---|
| 139 | }
|
|---|
| 140 |
|
|---|
| 141 | error = Curl_getaddrinfo_ex(hostname, sbufptr, &hints, &res);
|
|---|
| 142 | if(error) {
|
|---|
| 143 | infof(data, "getaddrinfo(3) failed for %s:%d", hostname, port);
|
|---|
| 144 | return NULL;
|
|---|
| 145 | }
|
|---|
| 146 |
|
|---|
| 147 | if(port) {
|
|---|
| 148 | Curl_addrinfo_set_port(res, port);
|
|---|
| 149 | }
|
|---|
| 150 |
|
|---|
| 151 | dump_addrinfo(res);
|
|---|
| 152 |
|
|---|
| 153 | return res;
|
|---|
| 154 | }
|
|---|
| 155 | #endif /* CURLRES_SYNCH */
|
|---|
| 156 |
|
|---|
| 157 | #endif /* CURLRES_IPV6 */
|
|---|
