1 /*
2 +----------------------------------------------------------------------+
3 | Copyright (c) The PHP Group |
4 +----------------------------------------------------------------------+
5 | This source file is subject to version 3.01 of the PHP license, |
6 | that is bundled with this package in the file LICENSE, and is |
7 | available through the world-wide-web at the following url: |
8 | https://www.php.net/license/3_01.txt |
9 | If you did not receive a copy of the PHP license and are unable to |
10 | obtain it through the world-wide-web, please send a note to |
11 | license@php.net so we can mail you a copy immediately. |
12 +----------------------------------------------------------------------+
13 | Authors: Sara Golemon <pollita@php.net> |
14 +----------------------------------------------------------------------+
15 */
16
17 #include "php.h"
18 #include "php_network.h"
19
20 #if HAVE_ARPA_INET_H
21 # include <arpa/inet.h>
22 #endif
23
24 #if HAVE_NET_IF_H
25 # include <net/if.h>
26 #endif
27
28 #if HAVE_GETIFADDRS
29 # include <ifaddrs.h>
30 #elif defined(__PASE__)
31 /* IBM i implements getifaddrs, but under its own name */
32 #include <as400_protos.h>
33 #define getifaddrs Qp2getifaddrs
34 #define freeifaddrs Qp2freeifaddrs
35 #define ifaddrs ifaddrs_pase
36 #endif
37
38 #ifdef PHP_WIN32
39 # ifndef __clang__
40 # include <intrin.h>
41 # endif
42 # include <winsock2.h>
43 # include <ws2ipdef.h>
44 # include <Ws2tcpip.h>
45 # include <iphlpapi.h>
46 #else
47 # include <netdb.h>
48 #endif
49
php_inet_ntop(const struct sockaddr * addr)50 PHPAPI zend_string* php_inet_ntop(const struct sockaddr *addr) {
51 socklen_t addrlen = sizeof(struct sockaddr_in);
52
53 if (!addr) { return NULL; }
54
55 /* Prefer inet_ntop() as it's more task-specific and doesn't have to be demangled */
56 #if HAVE_INET_NTOP
57 switch (addr->sa_family) {
58 #ifdef AF_INET6
59 case AF_INET6: {
60 zend_string *ret = zend_string_alloc(INET6_ADDRSTRLEN, 0);
61 if (inet_ntop(AF_INET6, &(((struct sockaddr_in6*)addr)->sin6_addr), ZSTR_VAL(ret), INET6_ADDRSTRLEN)) {
62 ZSTR_LEN(ret) = strlen(ZSTR_VAL(ret));
63 return ret;
64 }
65 zend_string_efree(ret);
66 break;
67 }
68 #endif
69 case AF_INET: {
70 zend_string *ret = zend_string_alloc(INET_ADDRSTRLEN, 0);
71 if (inet_ntop(AF_INET, &(((struct sockaddr_in*)addr)->sin_addr), ZSTR_VAL(ret), INET_ADDRSTRLEN)) {
72 ZSTR_LEN(ret) = strlen(ZSTR_VAL(ret));
73 return ret;
74 }
75 zend_string_efree(ret);
76 break;
77 }
78 }
79 #endif
80
81 /* Fallback on getnameinfo() */
82 switch (addr->sa_family) {
83 #ifdef AF_INET6
84 case AF_INET6:
85 addrlen = sizeof(struct sockaddr_in6);
86 ZEND_FALLTHROUGH;
87 #endif
88 case AF_INET: {
89 zend_string *ret = zend_string_alloc(NI_MAXHOST, 0);
90 if (getnameinfo(addr, addrlen, ZSTR_VAL(ret), NI_MAXHOST, NULL, 0, NI_NUMERICHOST) == SUCCESS) {
91 /* Also demangle numeric host with %name suffix */
92 char *colon = strchr(ZSTR_VAL(ret), '%');
93 if (colon) { *colon = 0; }
94 ZSTR_LEN(ret) = strlen(ZSTR_VAL(ret));
95 return ret;
96 }
97 zend_string_efree(ret);
98 break;
99 }
100 }
101
102 return NULL;
103 }
104
105 #if defined(PHP_WIN32) || HAVE_GETIFADDRS || defined(__PASE__)
iface_append_unicast(zval * unicast,zend_long flags,struct sockaddr * addr,struct sockaddr * netmask,struct sockaddr * broadcast,struct sockaddr * ptp)106 static void iface_append_unicast(zval *unicast, zend_long flags,
107 struct sockaddr *addr, struct sockaddr *netmask,
108 struct sockaddr *broadcast, struct sockaddr *ptp) {
109 zend_string *host;
110 zval u;
111
112 array_init(&u);
113 add_assoc_long(&u, "flags", flags);
114
115 if (addr) {
116 add_assoc_long(&u, "family", addr->sa_family);
117 if ((host = php_inet_ntop(addr))) {
118 add_assoc_str(&u, "address", host);
119 }
120 }
121 if ((host = php_inet_ntop(netmask))) {
122 add_assoc_str(&u, "netmask", host);
123 }
124
125 if ((host = php_inet_ntop(broadcast))) {
126 add_assoc_str(&u, "broadcast", host);
127 }
128
129 if ((host = php_inet_ntop(ptp))) {
130 add_assoc_str(&u, "ptp", host);
131 }
132
133 add_next_index_zval(unicast, &u);
134 }
135
136 /* {{{ Returns an array in the form:
137 array(
138 'ifacename' => array(
139 'description' => 'Awesome interface', // Win32 only
140 'mac' => '00:11:22:33:44:55', // Win32 only
141 'mtu' => 1234, // Win32 only
142 'unicast' => array(
143 0 => array(
144 'family' => 2, // e.g. AF_INET, AF_INET6, AF_PACKET
145 'address' => '127.0.0.1',
146 'netmnask' => '255.0.0.0',
147 'broadcast' => '127.255.255.255', // POSIX only
148 'ptp' => '127.0.0.2', // POSIX only
149 ), // etc...
150 ),
151 ), // etc...
152 )
153 */
PHP_FUNCTION(net_get_interfaces)154 PHP_FUNCTION(net_get_interfaces) {
155 #ifdef PHP_WIN32
156 # define MALLOC(x) HeapAlloc(GetProcessHeap(), 0, (x))
157 # define FREE(x) HeapFree(GetProcessHeap(), 0, (x))
158 ULONG family = AF_UNSPEC;
159 ULONG flags = GAA_FLAG_INCLUDE_PREFIX;
160 PIP_ADAPTER_ADDRESSES pAddresses = NULL, p;
161 PIP_ADAPTER_UNICAST_ADDRESS u = NULL;
162 ULONG outBufLen = 0;
163 DWORD dwRetVal = 0;
164
165 ZEND_PARSE_PARAMETERS_NONE();
166
167 // Make an initial call to GetAdaptersAddresses to get the
168 // size needed into the outBufLen variable
169 if (GetAdaptersAddresses(family, flags, NULL, pAddresses, &outBufLen) == ERROR_BUFFER_OVERFLOW) {
170 FREE(pAddresses);
171 pAddresses = (IP_ADAPTER_ADDRESSES *) MALLOC(outBufLen);
172 }
173
174 if (pAddresses == NULL) {
175 zend_error(E_WARNING, "Memory allocation failed for IP_ADAPTER_ADDRESSES struct");
176 RETURN_FALSE;
177 }
178
179 dwRetVal = GetAdaptersAddresses(family, flags, NULL, pAddresses, &outBufLen);
180
181 if (NO_ERROR != dwRetVal) {
182 char *buf = php_win32_error_to_msg(GetLastError());
183 zend_error(E_WARNING, "GetAdaptersAddresses failed: %s", buf);
184 php_win32_error_msg_free(buf);
185 FREE(pAddresses);
186 RETURN_FALSE;
187 }
188
189 array_init(return_value);
190 for (p = pAddresses; p; p = p->Next) {
191 zval iface, unicast;
192
193 if ((IF_TYPE_ETHERNET_CSMACD != p->IfType) && (IF_TYPE_SOFTWARE_LOOPBACK != p->IfType)) {
194 continue;
195 }
196
197 array_init(&iface);
198
199 if (p->Description) {
200 char tmp[256];
201 memset(tmp, 0, sizeof(tmp));
202 wcstombs(tmp, p->Description, sizeof(tmp));
203 add_assoc_string(&iface, "description", tmp);
204 }
205
206 if (p->PhysicalAddressLength > 0) {
207 zend_string *mac = zend_string_alloc(p->PhysicalAddressLength * 3, 0);
208 char *s = ZSTR_VAL(mac);
209 ULONG i;
210 for (i = 0; i < p->PhysicalAddressLength; ++i) {
211 s += snprintf(s, 4, "%02X:", p->PhysicalAddress[i]);
212 }
213 *(--s) = 0;
214 ZSTR_LEN(mac) = s - ZSTR_VAL(mac);
215 add_assoc_str(&iface, "mac", mac);
216 }
217
218 /* Flags could be placed at this level,
219 * but we repeat it in the unicast subarray
220 * for consistency with the POSIX version.
221 */
222 add_assoc_long(&iface, "mtu", p->Mtu);
223
224 array_init(&unicast);
225 for (u = p->FirstUnicastAddress; u; u = u->Next) {
226 switch (u->Address.lpSockaddr->sa_family) {
227 case AF_INET: {
228 ULONG mask;
229 struct sockaddr_in sin_mask;
230
231 ConvertLengthToIpv4Mask(u->OnLinkPrefixLength, &mask);
232 sin_mask.sin_family = AF_INET;
233 sin_mask.sin_addr.s_addr = mask;
234
235 iface_append_unicast(&unicast, p->Flags,
236 (struct sockaddr*)u->Address.lpSockaddr,
237 (struct sockaddr*)&sin_mask, NULL, NULL);
238 break;
239 }
240 case AF_INET6: {
241 ULONG i, j;
242 struct sockaddr_in6 sin6_mask;
243
244 memset(&sin6_mask, 0, sizeof(sin6_mask));
245 sin6_mask.sin6_family = AF_INET6;
246 for (i = u->OnLinkPrefixLength, j = 0; i > 0; i -= 8, ++j) {
247 sin6_mask.sin6_addr.s6_addr[j] = (i >= 8) ? 0xff : ((ULONG)((0xffU << (8 - i)) & 0xffU));
248 }
249
250 iface_append_unicast(&unicast, p->Flags,
251 (struct sockaddr*)u->Address.lpSockaddr,
252 (struct sockaddr*)&sin6_mask, NULL, NULL);
253 break;
254 }
255 }
256 }
257 add_assoc_zval(&iface, "unicast", &unicast);
258
259 add_assoc_bool(&iface, "up", (p->OperStatus == IfOperStatusUp));
260
261 add_assoc_zval(return_value, p->AdapterName, &iface);
262 }
263
264 FREE(pAddresses);
265 #undef MALLOC
266 #undef FREE
267 #elif HAVE_GETIFADDRS || defined(__PASE__) /* !PHP_WIN32 */
268 struct ifaddrs *addrs = NULL, *p;
269
270 ZEND_PARSE_PARAMETERS_NONE();
271
272 if (getifaddrs(&addrs)) {
273 php_error(E_WARNING, "getifaddrs() failed %d: %s", errno, strerror(errno));
274 RETURN_FALSE;
275 }
276
277 array_init(return_value);
278 for (p = addrs; p; p = p->ifa_next) {
279 zval *iface = zend_hash_str_find(Z_ARR_P(return_value), p->ifa_name, strlen(p->ifa_name));
280 zval *unicast, *status;
281
282 if (!iface) {
283 zval newif;
284 array_init(&newif);
285 iface = zend_hash_str_add(Z_ARR_P(return_value), p->ifa_name, strlen(p->ifa_name), &newif);
286 }
287
288 unicast = zend_hash_str_find(Z_ARR_P(iface), "unicast", sizeof("unicast") - 1);
289 if (!unicast) {
290 zval newuni;
291 array_init(&newuni);
292 unicast = zend_hash_str_add(Z_ARR_P(iface), "unicast", sizeof("unicast") - 1, &newuni);
293 }
294
295 iface_append_unicast(unicast,
296 p->ifa_flags,
297 p->ifa_addr, p->ifa_netmask,
298 (p->ifa_flags & IFF_BROADCAST) ? p->ifa_broadaddr : NULL,
299 (p->ifa_flags & IFF_POINTOPOINT) ? p->ifa_dstaddr : NULL);
300 status = zend_hash_str_find(Z_ARR_P(iface), "up", sizeof("up") - 1);
301 if (!status) {
302 add_assoc_bool(iface, "up", ((p->ifa_flags & IFF_UP) != 0));
303 }
304 }
305
306 freeifaddrs(addrs);
307 #else
308 /* Should never happen as we never register the function */
309 ZEND_UNREACHABLE();
310 #endif
311 }
312 #endif
313 /* }}} */
314
