Benny Prijono | b681a2f | 2007-03-25 18:44:51 +0000 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C)2003-2007 Benny Prijono <benny@prijono.org> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
Benny Prijono | a6bd758 | 2007-03-28 15:49:48 +0000 | [diff] [blame] | 19 | #include <pj/config.h> |
Benny Prijono | b681a2f | 2007-03-25 18:44:51 +0000 | [diff] [blame] | 20 | |
| 21 | #define WIN32_LEAN_AND_MEAN |
| 22 | #include <windows.h> |
| 23 | |
Benny Prijono | a6bd758 | 2007-03-28 15:49:48 +0000 | [diff] [blame] | 24 | /* PMIB_ICMP_EX is not declared in VC6, causing error. |
| 25 | * But EVC4, which also claims to be VC6, does have it! |
| 26 | */ |
| 27 | #if defined(_MSC_VER) && _MSC_VER==1200 && !defined(PJ_WIN32_WINCE) |
Benny Prijono | b681a2f | 2007-03-25 18:44:51 +0000 | [diff] [blame] | 28 | # define PMIB_ICMP_EX void* |
| 29 | #endif |
Benny Prijono | 62b86eb | 2007-12-01 08:52:57 +0000 | [diff] [blame] | 30 | #include <winsock2.h> |
| 31 | |
| 32 | /* If you encounter error "Cannot open include file: 'Iphlpapi.h' here, |
| 33 | * you need to install newer Platform SDK. Presumably you're using |
| 34 | * Microsoft Visual Studio 6? |
| 35 | */ |
Benny Prijono | b681a2f | 2007-03-25 18:44:51 +0000 | [diff] [blame] | 36 | #include <Iphlpapi.h> |
| 37 | |
| 38 | #include <pj/ip_helper.h> |
| 39 | #include <pj/assert.h> |
| 40 | #include <pj/errno.h> |
| 41 | #include <pj/string.h> |
| 42 | |
Benny Prijono | 2501e13 | 2007-09-24 19:46:41 +0000 | [diff] [blame] | 43 | #ifndef PJ_IP_HELPER_IGNORE_LOOPBACK_IF |
| 44 | # define PJ_IP_HELPER_IGNORE_LOOPBACK_IF 1 |
| 45 | #endif |
| 46 | |
Benny Prijono | 48ef5a3 | 2007-07-28 01:58:36 +0000 | [diff] [blame] | 47 | typedef DWORD (WINAPI *PFN_GetIpAddrTable)(PMIB_IPADDRTABLE pIpAddrTable, |
| 48 | PULONG pdwSize, |
| 49 | BOOL bOrder); |
Benny Prijono | 62b86eb | 2007-12-01 08:52:57 +0000 | [diff] [blame] | 50 | #if defined(PJ_HAS_IPV6) && PJ_HAS_IPV6!=0 |
| 51 | typedef DWORD (WINAPI *PFN_GetAdapterAddresses)(ULONG Family, |
| 52 | ULONG Flags, |
| 53 | PVOID Reserved, |
| 54 | PIP_ADAPTER_ADDRESSES AdapterAddresses, |
| 55 | PULONG SizePointer); |
| 56 | #endif /* PJ_HAS_IPV6 */ |
Benny Prijono | 48ef5a3 | 2007-07-28 01:58:36 +0000 | [diff] [blame] | 57 | typedef DWORD (WINAPI *PFN_GetIpForwardTable)(PMIB_IPFORWARDTABLE pIpForwardTable, |
| 58 | PULONG pdwSize, |
| 59 | BOOL bOrder); |
Benny Prijono | 2501e13 | 2007-09-24 19:46:41 +0000 | [diff] [blame] | 60 | typedef DWORD (WINAPI *PFN_GetIfEntry)(PMIB_IFROW pIfRow); |
Benny Prijono | 48ef5a3 | 2007-07-28 01:58:36 +0000 | [diff] [blame] | 61 | |
| 62 | static HANDLE s_hDLL; |
| 63 | static PFN_GetIpAddrTable s_pfnGetIpAddrTable; |
Benny Prijono | 62b86eb | 2007-12-01 08:52:57 +0000 | [diff] [blame] | 64 | #if defined(PJ_HAS_IPV6) && PJ_HAS_IPV6!=0 |
| 65 | static PFN_GetAdapterAddresses s_pfnGetAdapterAddresses; |
| 66 | #endif /* PJ_HAS_IPV6 */ |
Benny Prijono | 48ef5a3 | 2007-07-28 01:58:36 +0000 | [diff] [blame] | 67 | static PFN_GetIpForwardTable s_pfnGetIpForwardTable; |
Benny Prijono | 2501e13 | 2007-09-24 19:46:41 +0000 | [diff] [blame] | 68 | static PFN_GetIfEntry s_pfnGetIfEntry; |
Benny Prijono | 48ef5a3 | 2007-07-28 01:58:36 +0000 | [diff] [blame] | 69 | |
Benny Prijono | 62b86eb | 2007-12-01 08:52:57 +0000 | [diff] [blame] | 70 | |
Benny Prijono | 16f6479 | 2007-08-16 14:13:28 +0000 | [diff] [blame] | 71 | static void unload_iphlp_module(void) |
Benny Prijono | 48ef5a3 | 2007-07-28 01:58:36 +0000 | [diff] [blame] | 72 | { |
| 73 | FreeLibrary(s_hDLL); |
| 74 | s_hDLL = NULL; |
| 75 | s_pfnGetIpAddrTable = NULL; |
| 76 | s_pfnGetIpForwardTable = NULL; |
Benny Prijono | 62b86eb | 2007-12-01 08:52:57 +0000 | [diff] [blame] | 77 | s_pfnGetIfEntry = NULL; |
| 78 | #if defined(PJ_HAS_IPV6) && PJ_HAS_IPV6!=0 |
| 79 | s_pfnGetAdapterAddresses = NULL; |
| 80 | #endif |
Benny Prijono | 48ef5a3 | 2007-07-28 01:58:36 +0000 | [diff] [blame] | 81 | } |
| 82 | |
| 83 | static FARPROC GetIpHlpApiProc(pj_char_t *lpProcName) |
| 84 | { |
| 85 | if(NULL == s_hDLL) { |
| 86 | s_hDLL = LoadLibrary(PJ_T("IpHlpApi")); |
| 87 | if(NULL != s_hDLL) { |
| 88 | pj_atexit(&unload_iphlp_module); |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | if(NULL != s_hDLL) |
| 93 | return GetProcAddress(s_hDLL, lpProcName); |
| 94 | |
| 95 | return NULL; |
| 96 | } |
| 97 | |
| 98 | static DWORD MyGetIpAddrTable(PMIB_IPADDRTABLE pIpAddrTable, |
| 99 | PULONG pdwSize, |
| 100 | BOOL bOrder) |
| 101 | { |
| 102 | if(NULL == s_pfnGetIpAddrTable) { |
| 103 | s_pfnGetIpAddrTable = (PFN_GetIpAddrTable) |
| 104 | GetIpHlpApiProc(PJ_T("GetIpAddrTable")); |
| 105 | } |
| 106 | |
| 107 | if(NULL != s_pfnGetIpAddrTable) { |
| 108 | return s_pfnGetIpAddrTable(pIpAddrTable, pdwSize, bOrder); |
| 109 | } |
| 110 | |
| 111 | return ERROR_NOT_SUPPORTED; |
| 112 | } |
| 113 | |
Benny Prijono | 62b86eb | 2007-12-01 08:52:57 +0000 | [diff] [blame] | 114 | #if defined(PJ_HAS_IPV6) && PJ_HAS_IPV6!=0 |
| 115 | static DWORD MyGetAdapterAddresses(ULONG Family, |
| 116 | ULONG Flags, |
| 117 | PVOID Reserved, |
| 118 | PIP_ADAPTER_ADDRESSES AdapterAddresses, |
| 119 | PULONG SizePointer) |
| 120 | { |
| 121 | if(NULL == s_pfnGetAdapterAddresses) { |
| 122 | s_pfnGetAdapterAddresses = (PFN_GetAdapterAddresses) |
| 123 | GetIpHlpApiProc(PJ_T("GetAdapterAddresses")); |
| 124 | } |
| 125 | |
| 126 | if(NULL != s_pfnGetAdapterAddresses) { |
| 127 | return s_pfnGetAdapterAddresses(Family, Flags, Reserved, |
| 128 | AdapterAddresses, SizePointer); |
| 129 | } |
| 130 | |
| 131 | return ERROR_NOT_SUPPORTED; |
| 132 | } |
| 133 | #endif /* PJ_HAS_IPV6 */ |
Benny Prijono | 48ef5a3 | 2007-07-28 01:58:36 +0000 | [diff] [blame] | 134 | |
Benny Prijono | 2501e13 | 2007-09-24 19:46:41 +0000 | [diff] [blame] | 135 | #if PJ_IP_HELPER_IGNORE_LOOPBACK_IF |
| 136 | static DWORD MyGetIfEntry(MIB_IFROW *pIfRow) |
| 137 | { |
| 138 | if(NULL == s_pfnGetIfEntry) { |
| 139 | s_pfnGetIfEntry = (PFN_GetIfEntry) |
| 140 | GetIpHlpApiProc(PJ_T("GetIfEntry")); |
| 141 | } |
| 142 | |
| 143 | if(NULL != s_pfnGetIfEntry) { |
| 144 | return s_pfnGetIfEntry(pIfRow); |
| 145 | } |
| 146 | |
| 147 | return ERROR_NOT_SUPPORTED; |
| 148 | } |
| 149 | #endif |
| 150 | |
| 151 | |
Benny Prijono | 48ef5a3 | 2007-07-28 01:58:36 +0000 | [diff] [blame] | 152 | static DWORD MyGetIpForwardTable(PMIB_IPFORWARDTABLE pIpForwardTable, |
| 153 | PULONG pdwSize, |
| 154 | BOOL bOrder) |
| 155 | { |
| 156 | if(NULL == s_pfnGetIpForwardTable) { |
| 157 | s_pfnGetIpForwardTable = (PFN_GetIpForwardTable) |
| 158 | GetIpHlpApiProc(PJ_T("GetIpForwardTable")); |
| 159 | } |
| 160 | |
| 161 | if(NULL != s_pfnGetIpForwardTable) { |
| 162 | return s_pfnGetIpForwardTable(pIpForwardTable, pdwSize, bOrder); |
| 163 | } |
| 164 | |
| 165 | return ERROR_NOT_SUPPORTED; |
| 166 | } |
Benny Prijono | b681a2f | 2007-03-25 18:44:51 +0000 | [diff] [blame] | 167 | |
Benny Prijono | 62b86eb | 2007-12-01 08:52:57 +0000 | [diff] [blame] | 168 | /* Enumerate local IP interface using GetIpAddrTable() |
| 169 | * for IPv4 addresses only. |
Benny Prijono | b681a2f | 2007-03-25 18:44:51 +0000 | [diff] [blame] | 170 | */ |
Benny Prijono | 62b86eb | 2007-12-01 08:52:57 +0000 | [diff] [blame] | 171 | static pj_status_t enum_ipv4_interface(unsigned *p_cnt, |
| 172 | pj_sockaddr ifs[]) |
Benny Prijono | b681a2f | 2007-03-25 18:44:51 +0000 | [diff] [blame] | 173 | { |
| 174 | /* Provide enough buffer or otherwise it will fail with |
| 175 | * error 22 ("Not Enough Buffer") error. |
| 176 | */ |
Benny Prijono | 6b5b660 | 2007-03-30 18:54:46 +0000 | [diff] [blame] | 177 | char ipTabBuff[1024]; |
Benny Prijono | b681a2f | 2007-03-25 18:44:51 +0000 | [diff] [blame] | 178 | MIB_IPADDRTABLE *pTab; |
| 179 | ULONG tabSize; |
| 180 | unsigned i, count; |
Benny Prijono | 48ef5a3 | 2007-07-28 01:58:36 +0000 | [diff] [blame] | 181 | DWORD rc = NO_ERROR; |
Benny Prijono | b681a2f | 2007-03-25 18:44:51 +0000 | [diff] [blame] | 182 | |
| 183 | PJ_ASSERT_RETURN(p_cnt && ifs, PJ_EINVAL); |
| 184 | |
Benny Prijono | 6b5b660 | 2007-03-30 18:54:46 +0000 | [diff] [blame] | 185 | pTab = (MIB_IPADDRTABLE*)ipTabBuff; |
Benny Prijono | b681a2f | 2007-03-25 18:44:51 +0000 | [diff] [blame] | 186 | |
| 187 | /* Get IP address table */ |
| 188 | tabSize = sizeof(ipTabBuff); |
Benny Prijono | 48ef5a3 | 2007-07-28 01:58:36 +0000 | [diff] [blame] | 189 | |
| 190 | rc = MyGetIpAddrTable(pTab, &tabSize, FALSE); |
Benny Prijono | b681a2f | 2007-03-25 18:44:51 +0000 | [diff] [blame] | 191 | if (rc != NO_ERROR) |
| 192 | return PJ_RETURN_OS_ERROR(rc); |
| 193 | |
| 194 | /* Reset result */ |
| 195 | pj_bzero(ifs, sizeof(ifs[0]) * (*p_cnt)); |
| 196 | |
| 197 | /* Now fill out the entries */ |
| 198 | count = (pTab->dwNumEntries < *p_cnt) ? pTab->dwNumEntries : *p_cnt; |
Benny Prijono | fed1af9 | 2007-03-27 23:29:27 +0000 | [diff] [blame] | 199 | *p_cnt = 0; |
Benny Prijono | b681a2f | 2007-03-25 18:44:51 +0000 | [diff] [blame] | 200 | for (i=0; i<count; ++i) { |
Benny Prijono | 2501e13 | 2007-09-24 19:46:41 +0000 | [diff] [blame] | 201 | MIB_IFROW ifRow; |
| 202 | |
Benny Prijono | 62b86eb | 2007-12-01 08:52:57 +0000 | [diff] [blame] | 203 | /* Ignore 0.0.0.0 address (interface is down?) */ |
Benny Prijono | fed1af9 | 2007-03-27 23:29:27 +0000 | [diff] [blame] | 204 | if (pTab->table[i].dwAddr == 0) |
| 205 | continue; |
Benny Prijono | 2501e13 | 2007-09-24 19:46:41 +0000 | [diff] [blame] | 206 | |
| 207 | #if PJ_IP_HELPER_IGNORE_LOOPBACK_IF |
| 208 | /* Investigate the type of this interface */ |
| 209 | pj_bzero(&ifRow, sizeof(ifRow)); |
| 210 | ifRow.dwIndex = pTab->table[i].dwIndex; |
| 211 | if (MyGetIfEntry(&ifRow) != 0) |
| 212 | continue; |
| 213 | |
| 214 | if (ifRow.dwType == MIB_IF_TYPE_LOOPBACK) |
| 215 | continue; |
| 216 | #endif |
| 217 | |
Benny Prijono | 62b86eb | 2007-12-01 08:52:57 +0000 | [diff] [blame] | 218 | ifs[*p_cnt].ipv4.sin_family = PJ_AF_INET; |
| 219 | ifs[*p_cnt].ipv4.sin_addr.s_addr = pTab->table[i].dwAddr; |
Benny Prijono | fed1af9 | 2007-03-27 23:29:27 +0000 | [diff] [blame] | 220 | (*p_cnt)++; |
Benny Prijono | b681a2f | 2007-03-25 18:44:51 +0000 | [diff] [blame] | 221 | } |
| 222 | |
Benny Prijono | 9399356 | 2008-01-24 19:54:51 +0000 | [diff] [blame] | 223 | return (*p_cnt) ? PJ_SUCCESS : PJ_ENOTFOUND; |
Benny Prijono | b681a2f | 2007-03-25 18:44:51 +0000 | [diff] [blame] | 224 | } |
| 225 | |
| 226 | |
Benny Prijono | 62b86eb | 2007-12-01 08:52:57 +0000 | [diff] [blame] | 227 | /* Enumerate local IP interface using GetAdapterAddresses(), |
| 228 | * which works for both IPv4 and IPv6. |
| 229 | */ |
| 230 | #if defined(PJ_HAS_IPV6) && PJ_HAS_IPV6!=0 |
| 231 | static pj_status_t enum_ipv4_ipv6_interface(int af, |
| 232 | unsigned *p_cnt, |
| 233 | pj_sockaddr ifs[]) |
| 234 | { |
| 235 | pj_uint8_t buffer[1024]; |
| 236 | IP_ADAPTER_ADDRESSES *adapter = (IP_ADAPTER_ADDRESSES*)buffer; |
| 237 | ULONG size = sizeof(buffer); |
| 238 | unsigned i; |
| 239 | DWORD rc; |
| 240 | |
| 241 | rc = MyGetAdapterAddresses(af, 0, NULL, adapter, &size); |
| 242 | if (rc != ERROR_SUCCESS) |
| 243 | return PJ_RETURN_OS_ERROR(rc); |
| 244 | |
| 245 | for (i=0; i<*p_cnt && adapter; ++i, adapter = adapter->Next) { |
| 246 | SOCKET_ADDRESS *pAddr = &adapter->FirstUnicastAddress->Address; |
| 247 | ifs[i].addr.sa_family = pAddr->lpSockaddr->sa_family; |
| 248 | pj_memcpy(&ifs[i], pAddr->lpSockaddr, pAddr->iSockaddrLength); |
| 249 | } |
| 250 | |
| 251 | return PJ_SUCCESS; |
| 252 | } |
| 253 | #endif |
| 254 | |
| 255 | |
| 256 | /* |
| 257 | * Enumerate the local IP interface currently active in the host. |
| 258 | */ |
| 259 | PJ_DEF(pj_status_t) pj_enum_ip_interface(int af, |
| 260 | unsigned *p_cnt, |
| 261 | pj_sockaddr ifs[]) |
| 262 | { |
| 263 | pj_status_t status = -1; |
| 264 | |
| 265 | PJ_ASSERT_RETURN(p_cnt && ifs, PJ_EINVAL); |
| 266 | PJ_ASSERT_RETURN(af==PJ_AF_UNSPEC || af==PJ_AF_INET || af==PJ_AF_INET6, |
| 267 | PJ_EAFNOTSUP); |
| 268 | |
| 269 | #if defined(PJ_HAS_IPV6) && PJ_HAS_IPV6!=0 |
| 270 | status = enum_ipv4_ipv6_interface(af, p_cnt, ifs); |
| 271 | if (status != PJ_SUCCESS && (af==PJ_AF_INET || af==PJ_AF_UNSPEC)) |
| 272 | status = enum_ipv4_interface(p_cnt, ifs); |
| 273 | return status; |
| 274 | #else |
| 275 | if (af==PJ_AF_INET6) |
| 276 | return PJ_EIPV6NOTSUP; |
| 277 | else if (af != PJ_AF_INET && af != PJ_AF_UNSPEC) |
| 278 | return PJ_EAFNOTSUP; |
| 279 | |
| 280 | status = enum_ipv4_interface(p_cnt, ifs); |
| 281 | return status; |
| 282 | #endif |
| 283 | } |
| 284 | |
Benny Prijono | b681a2f | 2007-03-25 18:44:51 +0000 | [diff] [blame] | 285 | /* |
| 286 | * Enumerate the IP routing table for this host. |
| 287 | */ |
| 288 | PJ_DEF(pj_status_t) pj_enum_ip_route(unsigned *p_cnt, |
| 289 | pj_ip_route_entry routes[]) |
| 290 | { |
Benny Prijono | 6b5b660 | 2007-03-30 18:54:46 +0000 | [diff] [blame] | 291 | char ipTabBuff[1024]; |
Benny Prijono | b681a2f | 2007-03-25 18:44:51 +0000 | [diff] [blame] | 292 | MIB_IPADDRTABLE *pIpTab; |
Benny Prijono | 6b5b660 | 2007-03-30 18:54:46 +0000 | [diff] [blame] | 293 | char rtabBuff[1024]; |
Benny Prijono | b681a2f | 2007-03-25 18:44:51 +0000 | [diff] [blame] | 294 | MIB_IPFORWARDTABLE *prTab; |
| 295 | ULONG tabSize; |
| 296 | unsigned i, count; |
Benny Prijono | 48ef5a3 | 2007-07-28 01:58:36 +0000 | [diff] [blame] | 297 | DWORD rc = NO_ERROR; |
Benny Prijono | b681a2f | 2007-03-25 18:44:51 +0000 | [diff] [blame] | 298 | |
| 299 | PJ_ASSERT_RETURN(p_cnt && routes, PJ_EINVAL); |
| 300 | |
Benny Prijono | 6b5b660 | 2007-03-30 18:54:46 +0000 | [diff] [blame] | 301 | pIpTab = (MIB_IPADDRTABLE *)ipTabBuff; |
| 302 | prTab = (MIB_IPFORWARDTABLE *)rtabBuff; |
Benny Prijono | b681a2f | 2007-03-25 18:44:51 +0000 | [diff] [blame] | 303 | |
| 304 | /* First get IP address table */ |
| 305 | tabSize = sizeof(ipTabBuff); |
Benny Prijono | 48ef5a3 | 2007-07-28 01:58:36 +0000 | [diff] [blame] | 306 | rc = MyGetIpAddrTable(pIpTab, &tabSize, FALSE); |
Benny Prijono | b681a2f | 2007-03-25 18:44:51 +0000 | [diff] [blame] | 307 | if (rc != NO_ERROR) |
| 308 | return PJ_RETURN_OS_ERROR(rc); |
| 309 | |
| 310 | /* Next get IP route table */ |
| 311 | tabSize = sizeof(rtabBuff); |
Benny Prijono | 48ef5a3 | 2007-07-28 01:58:36 +0000 | [diff] [blame] | 312 | |
| 313 | rc = MyGetIpForwardTable(prTab, &tabSize, 1); |
Benny Prijono | b681a2f | 2007-03-25 18:44:51 +0000 | [diff] [blame] | 314 | if (rc != NO_ERROR) |
| 315 | return PJ_RETURN_OS_ERROR(rc); |
| 316 | |
| 317 | /* Reset routes */ |
| 318 | pj_bzero(routes, sizeof(routes[0]) * (*p_cnt)); |
| 319 | |
| 320 | /* Now fill out the route entries */ |
| 321 | count = (prTab->dwNumEntries < *p_cnt) ? prTab->dwNumEntries : *p_cnt; |
| 322 | *p_cnt = 0; |
| 323 | for (i=0; i<count; ++i) { |
| 324 | unsigned j; |
| 325 | |
| 326 | /* Find interface entry */ |
| 327 | for (j=0; j<pIpTab->dwNumEntries; ++j) { |
| 328 | if (pIpTab->table[j].dwIndex == prTab->table[i].dwForwardIfIndex) |
| 329 | break; |
| 330 | } |
| 331 | |
| 332 | if (j==pIpTab->dwNumEntries) |
| 333 | continue; /* Interface not found */ |
| 334 | |
| 335 | routes[*p_cnt].ipv4.if_addr.s_addr = pIpTab->table[j].dwAddr; |
| 336 | routes[*p_cnt].ipv4.dst_addr.s_addr = prTab->table[i].dwForwardDest; |
| 337 | routes[*p_cnt].ipv4.mask.s_addr = prTab->table[i].dwForwardMask; |
| 338 | |
| 339 | (*p_cnt)++; |
| 340 | } |
| 341 | |
| 342 | return PJ_SUCCESS; |
| 343 | } |
| 344 | |