Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2015 Cisco and/or its affiliates. |
| 3 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | * you may not use this file except in compliance with the License. |
| 5 | * You may obtain a copy of the License at: |
| 6 | * |
| 7 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | * |
| 9 | * Unless required by applicable law or agreed to in writing, software |
| 10 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | * See the License for the specific language governing permissions and |
| 13 | * limitations under the License. |
| 14 | */ |
| 15 | /* |
| 16 | Copyright (c) 2001, 2002, 2003, 2005 Eliot Dresselhaus |
| 17 | |
| 18 | Permission is hereby granted, free of charge, to any person obtaining |
| 19 | a copy of this software and associated documentation files (the |
| 20 | "Software"), to deal in the Software without restriction, including |
| 21 | without limitation the rights to use, copy, modify, merge, publish, |
| 22 | distribute, sublicense, and/or sell copies of the Software, and to |
| 23 | permit persons to whom the Software is furnished to do so, subject to |
| 24 | the following conditions: |
| 25 | |
| 26 | The above copyright notice and this permission notice shall be |
| 27 | included in all copies or substantial portions of the Software. |
| 28 | |
| 29 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 30 | EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 31 | MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 32 | NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
| 33 | LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
| 34 | OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| 35 | WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 36 | */ |
| 37 | |
Damjan Marion | f49921f | 2017-09-11 16:52:11 +0200 | [diff] [blame] | 38 | #include <stdio.h> |
| 39 | #include <string.h> /* strchr */ |
| 40 | #define __USE_GNU |
Nathan Moos | 323418d | 2021-01-15 16:45:14 -0800 | [diff] [blame] | 41 | #define _GNU_SOURCE |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 42 | #include <sys/types.h> |
| 43 | #include <sys/socket.h> |
Damjan Marion | f49921f | 2017-09-11 16:52:11 +0200 | [diff] [blame] | 44 | #include <sys/un.h> |
Damjan Marion | f661638 | 2017-06-21 12:01:37 +0200 | [diff] [blame] | 45 | #include <sys/stat.h> |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 46 | #include <netinet/in.h> |
| 47 | #include <arpa/inet.h> |
| 48 | #include <netdb.h> |
| 49 | #include <unistd.h> |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 50 | #include <fcntl.h> |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 51 | |
| 52 | #include <vppinfra/mem.h> |
| 53 | #include <vppinfra/vec.h> |
| 54 | #include <vppinfra/socket.h> |
Nathan Skrzypczak | 4cef6de | 2021-07-19 18:21:43 +0200 | [diff] [blame] | 55 | #include <vppinfra/linux/netns.h> |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 56 | #include <vppinfra/format.h> |
| 57 | #include <vppinfra/error.h> |
| 58 | |
Nathan Moos | 323418d | 2021-01-15 16:45:14 -0800 | [diff] [blame] | 59 | #ifndef __GLIBC__ |
| 60 | /* IPPORT_USERRESERVED is not part of musl libc. */ |
| 61 | #define IPPORT_USERRESERVED 5000 |
| 62 | #endif |
| 63 | |
Damjan Marion | dae1c7e | 2020-10-17 13:32:25 +0200 | [diff] [blame] | 64 | __clib_export void |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 65 | clib_socket_tx_add_formatted (clib_socket_t * s, char *fmt, ...) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 66 | { |
| 67 | va_list va; |
| 68 | va_start (va, fmt); |
| 69 | clib_socket_tx_add_va_formatted (s, fmt, &va); |
| 70 | va_end (va); |
| 71 | } |
| 72 | |
| 73 | /* Return and bind to an unused port. */ |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 74 | static word |
| 75 | find_free_port (word sock) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 76 | { |
| 77 | word port; |
| 78 | |
| 79 | for (port = IPPORT_USERRESERVED; port < 1 << 16; port++) |
| 80 | { |
| 81 | struct sockaddr_in a; |
| 82 | |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 83 | clib_memset (&a, 0, sizeof (a)); /* Warnings be gone */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 84 | |
| 85 | a.sin_family = PF_INET; |
| 86 | a.sin_addr.s_addr = INADDR_ANY; |
| 87 | a.sin_port = htons (port); |
| 88 | |
| 89 | if (bind (sock, (struct sockaddr *) &a, sizeof (a)) >= 0) |
| 90 | break; |
| 91 | } |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 92 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 93 | return port < 1 << 16 ? port : -1; |
| 94 | } |
| 95 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 96 | static clib_error_t * |
| 97 | default_socket_write (clib_socket_t * s) |
| 98 | { |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 99 | clib_error_t *err = 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 100 | word written = 0; |
| 101 | word fd = 0; |
| 102 | word tx_len; |
| 103 | |
| 104 | fd = s->fd; |
| 105 | |
| 106 | /* Map standard input to standard output. |
| 107 | Typically, fd is a socket for which read/write both work. */ |
| 108 | if (fd == 0) |
| 109 | fd = 1; |
| 110 | |
| 111 | tx_len = vec_len (s->tx_buffer); |
| 112 | written = write (fd, s->tx_buffer, tx_len); |
| 113 | |
| 114 | /* Ignore certain errors. */ |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 115 | if (written < 0 && !unix_error_is_fatal (errno)) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 116 | written = 0; |
| 117 | |
| 118 | /* A "real" error occurred. */ |
| 119 | if (written < 0) |
| 120 | { |
Dave Wallace | 70ec09d | 2017-09-06 16:45:04 -0400 | [diff] [blame] | 121 | err = clib_error_return_unix (0, "write %wd bytes (fd %d, '%s')", |
| 122 | tx_len, s->fd, s->config); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 123 | vec_free (s->tx_buffer); |
| 124 | goto done; |
| 125 | } |
| 126 | |
| 127 | /* Reclaim the transmitted part of the tx buffer on successful writes. */ |
| 128 | else if (written > 0) |
| 129 | { |
| 130 | if (written == tx_len) |
Damjan Marion | 8bea589 | 2022-04-04 22:40:45 +0200 | [diff] [blame] | 131 | vec_set_len (s->tx_buffer, 0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 132 | else |
| 133 | vec_delete (s->tx_buffer, written, 0); |
| 134 | } |
| 135 | |
| 136 | /* If a non-fatal error occurred AND |
| 137 | the buffer is full, then we must free it. */ |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 138 | else if (written == 0 && tx_len > 64 * 1024) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 139 | { |
| 140 | vec_free (s->tx_buffer); |
| 141 | } |
| 142 | |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 143 | done: |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 144 | return err; |
| 145 | } |
| 146 | |
| 147 | static clib_error_t * |
| 148 | default_socket_read (clib_socket_t * sock, int n_bytes) |
| 149 | { |
| 150 | word fd, n_read; |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 151 | u8 *buf; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 152 | |
| 153 | /* RX side of socket is down once end of file is reached. */ |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 154 | if (sock->rx_end_of_file) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 155 | return 0; |
| 156 | |
| 157 | fd = sock->fd; |
| 158 | |
| 159 | n_bytes = clib_max (n_bytes, 4096); |
| 160 | vec_add2 (sock->rx_buffer, buf, n_bytes); |
| 161 | |
| 162 | if ((n_read = read (fd, buf, n_bytes)) < 0) |
| 163 | { |
| 164 | n_read = 0; |
| 165 | |
| 166 | /* Ignore certain errors. */ |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 167 | if (!unix_error_is_fatal (errno)) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 168 | goto non_fatal; |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 169 | |
Dave Wallace | 70ec09d | 2017-09-06 16:45:04 -0400 | [diff] [blame] | 170 | return clib_error_return_unix (0, "read %d bytes (fd %d, '%s')", |
| 171 | n_bytes, sock->fd, sock->config); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 172 | } |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 173 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 174 | /* Other side closed the socket. */ |
| 175 | if (n_read == 0) |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 176 | sock->rx_end_of_file = 1; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 177 | |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 178 | non_fatal: |
Damjan Marion | 8bea589 | 2022-04-04 22:40:45 +0200 | [diff] [blame] | 179 | vec_inc_len (sock->rx_buffer, n_read - n_bytes); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 180 | |
| 181 | return 0; |
| 182 | } |
| 183 | |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 184 | static clib_error_t * |
| 185 | default_socket_close (clib_socket_t * s) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 186 | { |
| 187 | if (close (s->fd) < 0) |
Dave Wallace | 70ec09d | 2017-09-06 16:45:04 -0400 | [diff] [blame] | 188 | return clib_error_return_unix (0, "close (fd %d, %s)", s->fd, s->config); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 189 | return 0; |
| 190 | } |
| 191 | |
Damjan Marion | f49921f | 2017-09-11 16:52:11 +0200 | [diff] [blame] | 192 | static clib_error_t * |
| 193 | default_socket_sendmsg (clib_socket_t * s, void *msg, int msglen, |
| 194 | int fds[], int num_fds) |
| 195 | { |
| 196 | struct msghdr mh = { 0 }; |
| 197 | struct iovec iov[1]; |
Damjan Marion | 0215fb4 | 2018-10-30 13:04:19 +0100 | [diff] [blame] | 198 | char ctl[CMSG_SPACE (sizeof (int) * num_fds)]; |
Damjan Marion | f49921f | 2017-09-11 16:52:11 +0200 | [diff] [blame] | 199 | int rv; |
| 200 | |
| 201 | iov[0].iov_base = msg; |
| 202 | iov[0].iov_len = msglen; |
| 203 | mh.msg_iov = iov; |
| 204 | mh.msg_iovlen = 1; |
| 205 | |
| 206 | if (num_fds > 0) |
| 207 | { |
| 208 | struct cmsghdr *cmsg; |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 209 | clib_memset (&ctl, 0, sizeof (ctl)); |
Damjan Marion | f49921f | 2017-09-11 16:52:11 +0200 | [diff] [blame] | 210 | mh.msg_control = ctl; |
| 211 | mh.msg_controllen = sizeof (ctl); |
| 212 | cmsg = CMSG_FIRSTHDR (&mh); |
| 213 | cmsg->cmsg_len = CMSG_LEN (sizeof (int) * num_fds); |
| 214 | cmsg->cmsg_level = SOL_SOCKET; |
| 215 | cmsg->cmsg_type = SCM_RIGHTS; |
| 216 | memcpy (CMSG_DATA (cmsg), fds, sizeof (int) * num_fds); |
| 217 | } |
| 218 | rv = sendmsg (s->fd, &mh, 0); |
| 219 | if (rv < 0) |
| 220 | return clib_error_return_unix (0, "sendmsg"); |
| 221 | return 0; |
| 222 | } |
| 223 | |
| 224 | |
| 225 | static clib_error_t * |
| 226 | default_socket_recvmsg (clib_socket_t * s, void *msg, int msglen, |
| 227 | int fds[], int num_fds) |
| 228 | { |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 229 | #ifdef CLIB_LINUX |
Damjan Marion | f49921f | 2017-09-11 16:52:11 +0200 | [diff] [blame] | 230 | char ctl[CMSG_SPACE (sizeof (int) * num_fds) + |
| 231 | CMSG_SPACE (sizeof (struct ucred))]; |
Damjan Marion | 4dffd1c | 2018-09-03 12:30:36 +0200 | [diff] [blame] | 232 | struct ucred *cr = 0; |
| 233 | #else |
| 234 | char ctl[CMSG_SPACE (sizeof (int) * num_fds)]; |
| 235 | #endif |
Damjan Marion | f49921f | 2017-09-11 16:52:11 +0200 | [diff] [blame] | 236 | struct msghdr mh = { 0 }; |
| 237 | struct iovec iov[1]; |
| 238 | ssize_t size; |
Damjan Marion | f49921f | 2017-09-11 16:52:11 +0200 | [diff] [blame] | 239 | struct cmsghdr *cmsg; |
| 240 | |
| 241 | iov[0].iov_base = msg; |
| 242 | iov[0].iov_len = msglen; |
| 243 | mh.msg_iov = iov; |
| 244 | mh.msg_iovlen = 1; |
| 245 | mh.msg_control = ctl; |
| 246 | mh.msg_controllen = sizeof (ctl); |
| 247 | |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 248 | clib_memset (ctl, 0, sizeof (ctl)); |
Damjan Marion | f49921f | 2017-09-11 16:52:11 +0200 | [diff] [blame] | 249 | |
| 250 | /* receive the incoming message */ |
| 251 | size = recvmsg (s->fd, &mh, 0); |
| 252 | if (size != msglen) |
| 253 | { |
| 254 | return (size == 0) ? clib_error_return (0, "disconnected") : |
| 255 | clib_error_return_unix (0, "recvmsg: malformed message (fd %d, '%s')", |
| 256 | s->fd, s->config); |
| 257 | } |
| 258 | |
| 259 | cmsg = CMSG_FIRSTHDR (&mh); |
| 260 | while (cmsg) |
| 261 | { |
| 262 | if (cmsg->cmsg_level == SOL_SOCKET) |
| 263 | { |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 264 | #ifdef CLIB_LINUX |
Damjan Marion | f49921f | 2017-09-11 16:52:11 +0200 | [diff] [blame] | 265 | if (cmsg->cmsg_type == SCM_CREDENTIALS) |
| 266 | { |
| 267 | cr = (struct ucred *) CMSG_DATA (cmsg); |
| 268 | s->uid = cr->uid; |
| 269 | s->gid = cr->gid; |
| 270 | s->pid = cr->pid; |
| 271 | } |
Damjan Marion | 4dffd1c | 2018-09-03 12:30:36 +0200 | [diff] [blame] | 272 | else |
| 273 | #endif |
| 274 | if (cmsg->cmsg_type == SCM_RIGHTS) |
Damjan Marion | f49921f | 2017-09-11 16:52:11 +0200 | [diff] [blame] | 275 | { |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 276 | clib_memcpy_fast (fds, CMSG_DATA (cmsg), |
| 277 | num_fds * sizeof (int)); |
Damjan Marion | f49921f | 2017-09-11 16:52:11 +0200 | [diff] [blame] | 278 | } |
| 279 | } |
| 280 | cmsg = CMSG_NXTHDR (&mh, cmsg); |
| 281 | } |
| 282 | return 0; |
| 283 | } |
| 284 | |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 285 | static void |
| 286 | socket_init_funcs (clib_socket_t * s) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 287 | { |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 288 | if (!s->write_func) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 289 | s->write_func = default_socket_write; |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 290 | if (!s->read_func) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 291 | s->read_func = default_socket_read; |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 292 | if (!s->close_func) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 293 | s->close_func = default_socket_close; |
Damjan Marion | f49921f | 2017-09-11 16:52:11 +0200 | [diff] [blame] | 294 | if (!s->sendmsg_func) |
| 295 | s->sendmsg_func = default_socket_sendmsg; |
| 296 | if (!s->recvmsg_func) |
| 297 | s->recvmsg_func = default_socket_recvmsg; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 298 | } |
| 299 | |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 300 | static const struct |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 301 | { |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 302 | char *prefix; |
| 303 | sa_family_t family; |
| 304 | clib_socket_type_t type; |
| 305 | u16 skip_prefix : 1; |
| 306 | u16 is_local : 1; |
| 307 | } clib_socket_type_data[] = { |
| 308 | { .prefix = "unix:", |
| 309 | .family = AF_UNIX, |
| 310 | .type = CLIB_SOCKET_TYPE_UNIX, |
| 311 | .skip_prefix = 1, |
| 312 | .is_local = 1 }, |
| 313 | { .prefix = "tcp:", |
| 314 | .family = AF_INET, |
| 315 | .type = CLIB_SOCKET_TYPE_INET, |
| 316 | .skip_prefix = 1 }, |
| 317 | { .prefix = "abstract:", |
| 318 | .family = AF_UNIX, |
| 319 | .type = CLIB_SOCKET_TYPE_LINUX_ABSTRACT, |
| 320 | .skip_prefix = 1, |
| 321 | .is_local = 1 }, |
| 322 | { .prefix = "/", |
| 323 | .family = AF_UNIX, |
| 324 | .type = CLIB_SOCKET_TYPE_UNIX, |
| 325 | .skip_prefix = 0, |
| 326 | .is_local = 1 }, |
| 327 | { .prefix = "", |
| 328 | .family = AF_INET, |
| 329 | .type = CLIB_SOCKET_TYPE_INET, |
| 330 | .skip_prefix = 0, |
| 331 | .is_local = 0 }, |
| 332 | { .prefix = "", |
| 333 | .family = AF_UNIX, |
| 334 | .type = CLIB_SOCKET_TYPE_UNIX, |
| 335 | .skip_prefix = 0, |
| 336 | .is_local = 1 }, |
| 337 | }; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 338 | |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 339 | static u8 * |
| 340 | _clib_socket_get_string (char **p, int is_hostname) |
| 341 | { |
| 342 | u8 *s = 0; |
| 343 | while (**p) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 344 | { |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 345 | switch (**p) |
| 346 | { |
| 347 | case '_': |
| 348 | if (is_hostname) |
| 349 | return s; |
| 350 | case 'a' ... 'z': |
| 351 | case 'A' ... 'Z': |
| 352 | case '0' ... '9': |
| 353 | case '/': |
| 354 | case '-': |
| 355 | case '.': |
| 356 | vec_add1 (s, **p); |
| 357 | (*p)++; |
| 358 | break; |
| 359 | break; |
| 360 | default: |
| 361 | return s; |
| 362 | } |
| 363 | } |
| 364 | return s; |
| 365 | } |
| 366 | |
| 367 | __clib_export int |
| 368 | clib_socket_prefix_is_valid (char *s) |
| 369 | { |
| 370 | for (typeof (clib_socket_type_data[0]) *d = clib_socket_type_data; |
| 371 | d - clib_socket_type_data < ARRAY_LEN (clib_socket_type_data); d++) |
| 372 | if (d->skip_prefix && strncmp (s, d->prefix, strlen (d->prefix)) == 0) |
| 373 | return 1; |
| 374 | return 0; |
| 375 | } |
| 376 | |
| 377 | __clib_export clib_error_t * |
| 378 | clib_socket_init (clib_socket_t *s) |
| 379 | { |
| 380 | struct sockaddr_un su = { .sun_family = AF_UNIX }; |
| 381 | struct sockaddr_in si = { .sin_family = AF_INET }; |
| 382 | struct sockaddr *sa = 0; |
| 383 | typeof (clib_socket_type_data[0]) *data = 0; |
| 384 | socklen_t addr_len = 0; |
| 385 | int rv; |
| 386 | char *p; |
| 387 | clib_error_t *err = 0; |
| 388 | u8 *name = 0; |
| 389 | u16 port = 0; |
| 390 | #if CLIB_LINUX |
| 391 | int netns_fd = -1; |
| 392 | #endif |
| 393 | |
| 394 | s->fd = -1; |
| 395 | |
| 396 | if (!s->config) |
| 397 | s->config = ""; |
| 398 | |
| 399 | for (int i = 0; i < ARRAY_LEN (clib_socket_type_data); i++) |
| 400 | { |
| 401 | typeof (clib_socket_type_data[0]) *d = clib_socket_type_data + i; |
| 402 | |
| 403 | if (d->is_local == 0 && s->local_only) |
| 404 | continue; |
| 405 | |
| 406 | if (strncmp (s->config, d->prefix, strlen (d->prefix)) == 0) |
| 407 | { |
| 408 | data = d; |
| 409 | break; |
| 410 | } |
| 411 | } |
| 412 | |
| 413 | if (data == 0) |
| 414 | return clib_error_return (0, "unsupported socket config '%s'", s->config); |
| 415 | |
| 416 | s->type = data->type; |
| 417 | p = s->config + (data->skip_prefix ? strlen (data->prefix) : 0); |
| 418 | |
| 419 | name = _clib_socket_get_string (&p, data->type == CLIB_SOCKET_TYPE_INET); |
| 420 | vec_add1 (name, 0); |
| 421 | |
| 422 | /* parse port type for INET sockets */ |
| 423 | if (data->type == CLIB_SOCKET_TYPE_INET && p[0] == ':') |
| 424 | { |
| 425 | char *old_p = p + 1; |
| 426 | long long ll = strtoll (old_p, &p, 0); |
| 427 | |
| 428 | if (p == old_p) |
| 429 | { |
| 430 | err = clib_error_return (0, "invalid port"); |
| 431 | goto done; |
| 432 | } |
| 433 | |
| 434 | if (ll > CLIB_U16_MAX || ll < 1) |
| 435 | { |
| 436 | err = clib_error_return (0, "port out of range"); |
| 437 | goto done; |
| 438 | } |
| 439 | port = ll; |
| 440 | } |
| 441 | |
| 442 | while (p[0] == ',') |
| 443 | { |
| 444 | p++; |
| 445 | if (0) |
| 446 | ; |
| 447 | #if CLIB_LINUX |
| 448 | else if (s->type == CLIB_SOCKET_TYPE_LINUX_ABSTRACT && netns_fd == -1 && |
| 449 | strncmp (p, "netns_name=", 11) == 0) |
| 450 | { |
| 451 | p += 11; |
| 452 | u8 *str = _clib_socket_get_string (&p, 0); |
| 453 | u8 *pathname = format (0, "/var/run/netns/%v%c", str, 0); |
| 454 | if ((netns_fd = open ((char *) pathname, O_RDONLY)) < 0) |
| 455 | err = clib_error_return_unix (0, "open('%s')", pathname); |
| 456 | vec_free (str); |
| 457 | vec_free (pathname); |
| 458 | if (err) |
| 459 | goto done; |
| 460 | } |
| 461 | else if (s->type == CLIB_SOCKET_TYPE_LINUX_ABSTRACT && netns_fd == -1 && |
| 462 | strncmp (p, "netns_pid=", 10) == 0) |
| 463 | { |
| 464 | char *old_p = p = p + 10; |
| 465 | u32 pid = (u32) strtol (old_p, &p, 0); |
| 466 | |
| 467 | if (p == old_p) |
| 468 | err = clib_error_return (0, "invalid pid"); |
| 469 | else |
| 470 | { |
| 471 | u8 *pathname = format (0, "/proc/%u/ns/net%c", pid, 0); |
| 472 | if ((netns_fd = open ((char *) pathname, O_RDONLY)) < 0) |
| 473 | err = clib_error_return_unix (0, "open('%s')", pathname); |
| 474 | vec_free (pathname); |
| 475 | } |
| 476 | if (err) |
| 477 | goto done; |
| 478 | } |
| 479 | #endif |
| 480 | else |
| 481 | break; |
| 482 | } |
| 483 | |
| 484 | if (p[0] != 0) |
| 485 | { |
| 486 | err = clib_error_return (0, "unknown input `%s'", p); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 487 | goto done; |
| 488 | } |
| 489 | |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 490 | #if CLIB_LINUX |
| 491 | /* change netns if requested */ |
| 492 | if (s->type != CLIB_SOCKET_TYPE_INET && netns_fd != -1) |
| 493 | { |
| 494 | int fd = open ("/proc/self/ns/net", O_RDONLY); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 495 | |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 496 | if (setns (netns_fd, CLONE_NEWNET) < 0) |
| 497 | { |
| 498 | close (fd); |
| 499 | err = clib_error_return_unix (0, "setns(%d)", netns_fd); |
| 500 | goto done; |
| 501 | } |
| 502 | netns_fd = fd; |
| 503 | } |
| 504 | #endif |
| 505 | |
| 506 | if (s->type == CLIB_SOCKET_TYPE_INET) |
| 507 | { |
| 508 | addr_len = sizeof (si); |
| 509 | si.sin_port = htons (port); |
| 510 | |
| 511 | if (name) |
| 512 | { |
| 513 | struct in_addr host_addr; |
| 514 | vec_add1 (name, 0); |
| 515 | |
| 516 | /* Recognize localhost to avoid host lookup in most common cast. */ |
| 517 | if (!strcmp ((char *) name, "localhost")) |
| 518 | si.sin_addr.s_addr = htonl (INADDR_LOOPBACK); |
| 519 | |
| 520 | else if (inet_aton ((char *) name, &host_addr)) |
| 521 | si.sin_addr = host_addr; |
| 522 | |
| 523 | else if (strlen ((char *) name) > 0) |
| 524 | { |
| 525 | struct hostent *host = gethostbyname ((char *) name); |
| 526 | if (!host) |
| 527 | err = clib_error_return (0, "unknown host `%s'", name); |
| 528 | else |
| 529 | clib_memcpy (&si.sin_addr.s_addr, host->h_addr_list[0], |
| 530 | host->h_length); |
| 531 | } |
| 532 | |
| 533 | else |
| 534 | si.sin_addr.s_addr = |
| 535 | htonl (s->is_server ? INADDR_LOOPBACK : INADDR_ANY); |
| 536 | |
| 537 | if (err) |
| 538 | goto done; |
| 539 | } |
| 540 | sa = (struct sockaddr *) &si; |
| 541 | } |
| 542 | else if (s->type == CLIB_SOCKET_TYPE_UNIX) |
| 543 | { |
| 544 | struct stat st = { 0 }; |
| 545 | char *path = (char *) &su.sun_path; |
| 546 | |
| 547 | if (vec_len (name) > sizeof (su.sun_path) - 1) |
| 548 | { |
| 549 | err = clib_error_return (0, "File path '%v' too long", name); |
| 550 | goto done; |
| 551 | } |
| 552 | |
| 553 | clib_memcpy (path, s->config, vec_len (name)); |
| 554 | addr_len = sizeof (su); |
| 555 | sa = (struct sockaddr *) &su; |
| 556 | |
| 557 | rv = stat (path, &st); |
| 558 | if (!s->is_server && rv < 0) |
| 559 | { |
| 560 | err = clib_error_return_unix (0, "stat ('%s')", path); |
| 561 | goto done; |
| 562 | } |
| 563 | |
| 564 | if (s->is_server && rv == 0) |
| 565 | { |
| 566 | if (S_ISSOCK (st.st_mode)) |
| 567 | { |
| 568 | int client_fd = socket (AF_UNIX, SOCK_STREAM, 0); |
| 569 | int ret = connect (client_fd, (const struct sockaddr *) &su, |
| 570 | sizeof (su)); |
| 571 | typeof (errno) connect_errno = errno; |
| 572 | close (client_fd); |
| 573 | |
| 574 | if (ret == 0 || (ret < 0 && connect_errno != ECONNREFUSED)) |
| 575 | { |
| 576 | err = clib_error_return (0, "Active listener on '%s'", path); |
| 577 | goto done; |
| 578 | } |
| 579 | |
| 580 | if (unlink (path) < 0) |
| 581 | { |
| 582 | err = clib_error_return_unix (0, "unlink ('%s')", path); |
| 583 | goto done; |
| 584 | } |
| 585 | } |
| 586 | else |
| 587 | { |
| 588 | err = clib_error_return (0, "File '%s' already exists", path); |
| 589 | goto done; |
| 590 | } |
| 591 | } |
| 592 | } |
| 593 | #if CLIB_LINUX |
| 594 | else if (s->type == CLIB_SOCKET_TYPE_LINUX_ABSTRACT) |
| 595 | { |
| 596 | if (vec_len (name) > sizeof (su.sun_path) - 2) |
| 597 | { |
| 598 | err = clib_error_return (0, "Socket name '%v' too long", name); |
| 599 | goto done; |
| 600 | } |
| 601 | |
| 602 | clib_memcpy (&su.sun_path[1], name, vec_len (name)); |
| 603 | addr_len = sizeof (su.sun_family) + vec_len (name); |
| 604 | sa = (struct sockaddr *) &su; |
| 605 | s->allow_group_write = 0; |
| 606 | } |
| 607 | #endif |
| 608 | else |
| 609 | { |
| 610 | err = clib_error_return_unix (0, "unknown socket family"); |
| 611 | goto done; |
| 612 | } |
| 613 | |
| 614 | socket_init_funcs (s); |
| 615 | |
| 616 | if ((s->fd = socket (sa->sa_family, |
| 617 | s->is_seqpacket ? SOCK_SEQPACKET : SOCK_STREAM, 0)) < 0) |
| 618 | { |
| 619 | err = |
| 620 | clib_error_return_unix (0, "socket (fd %d, '%s')", s->fd, s->config); |
| 621 | goto done; |
| 622 | } |
| 623 | |
| 624 | if (s->is_server) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 625 | { |
| 626 | uword need_bind = 1; |
| 627 | |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 628 | if (sa->sa_family == AF_INET && si.sin_port == 0) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 629 | { |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 630 | word port = find_free_port (s->fd); |
| 631 | if (port < 0) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 632 | { |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 633 | err = clib_error_return (0, "no free port (fd %d, '%s')", s->fd, |
| 634 | s->config); |
| 635 | goto done; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 636 | } |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 637 | si.sin_port = port; |
| 638 | need_bind = 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 639 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 640 | |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 641 | if (setsockopt (s->fd, SOL_SOCKET, SO_REUSEADDR, &((int){ 1 }), |
| 642 | sizeof (int)) < 0) |
| 643 | clib_unix_warning ("setsockopt SO_REUSEADDR fails"); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 644 | |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 645 | #if CLIB_LINUX |
| 646 | if (sa->sa_family == AF_UNIX && s->passcred) |
Damjan Marion | f49921f | 2017-09-11 16:52:11 +0200 | [diff] [blame] | 647 | { |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 648 | if (setsockopt (s->fd, SOL_SOCKET, SO_PASSCRED, &((int){ 1 }), |
| 649 | sizeof (int)) < 0) |
Damjan Marion | f49921f | 2017-09-11 16:52:11 +0200 | [diff] [blame] | 650 | { |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 651 | err = clib_error_return_unix (0, |
| 652 | "setsockopt (SO_PASSCRED, " |
| 653 | "fd %d, '%s')", |
| 654 | s->fd, s->config); |
Damjan Marion | f49921f | 2017-09-11 16:52:11 +0200 | [diff] [blame] | 655 | goto done; |
| 656 | } |
| 657 | } |
Damjan Marion | 4dffd1c | 2018-09-03 12:30:36 +0200 | [diff] [blame] | 658 | #endif |
Damjan Marion | f49921f | 2017-09-11 16:52:11 +0200 | [diff] [blame] | 659 | |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 660 | if (need_bind && bind (s->fd, sa, addr_len) < 0) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 661 | { |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 662 | err = |
| 663 | clib_error_return_unix (0, "bind (fd %d, '%s')", s->fd, s->config); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 664 | goto done; |
| 665 | } |
| 666 | |
| 667 | if (listen (s->fd, 5) < 0) |
| 668 | { |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 669 | err = clib_error_return_unix (0, "listen (fd %d, '%s')", s->fd, |
| 670 | s->config); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 671 | goto done; |
| 672 | } |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 673 | |
| 674 | if (s->local_only && s->allow_group_write) |
Damjan Marion | f661638 | 2017-06-21 12:01:37 +0200 | [diff] [blame] | 675 | { |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 676 | if (fchmod (s->fd, S_IWGRP) < 0) |
Chris Luke | ab7b8d9 | 2017-09-07 07:40:13 -0400 | [diff] [blame] | 677 | { |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 678 | err = clib_error_return_unix ( |
| 679 | 0, "fchmod (fd %d, '%s', mode S_IWGRP)", s->fd, s->config); |
Chris Luke | ab7b8d9 | 2017-09-07 07:40:13 -0400 | [diff] [blame] | 680 | goto done; |
| 681 | } |
Damjan Marion | f661638 | 2017-06-21 12:01:37 +0200 | [diff] [blame] | 682 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 683 | } |
| 684 | else |
| 685 | { |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 686 | if (s->non_blocking_connect && fcntl (s->fd, F_SETFL, O_NONBLOCK) < 0) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 687 | { |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 688 | err = clib_error_return_unix (0, "fcntl NONBLOCK (fd %d, '%s')", |
| 689 | s->fd, s->config); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 690 | goto done; |
| 691 | } |
| 692 | |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 693 | while ((rv = connect (s->fd, sa, addr_len)) < 0 && errno == EAGAIN) |
Florin Coras | 42ddf69 | 2020-01-06 20:23:07 +0000 | [diff] [blame] | 694 | ; |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 695 | if (rv < 0 && !(s->non_blocking_connect && errno == EINPROGRESS)) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 696 | { |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 697 | err = clib_error_return_unix (0, "connect (fd %d, '%s')", s->fd, |
| 698 | s->config); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 699 | goto done; |
| 700 | } |
Florin Coras | 57e0af9 | 2021-05-26 10:21:10 -0700 | [diff] [blame] | 701 | /* Connect was blocking so set fd to non-blocking now unless |
| 702 | * blocking mode explicitly requested. */ |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 703 | if (!s->non_blocking_connect && !s->is_blocking && |
Florin Coras | 5fe9457 | 2021-05-24 08:58:15 -0700 | [diff] [blame] | 704 | fcntl (s->fd, F_SETFL, O_NONBLOCK) < 0) |
| 705 | { |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 706 | err = clib_error_return_unix (0, "fcntl NONBLOCK2 (fd %d, '%s')", |
| 707 | s->fd, s->config); |
Florin Coras | 5fe9457 | 2021-05-24 08:58:15 -0700 | [diff] [blame] | 708 | goto done; |
| 709 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 710 | } |
| 711 | |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 712 | done: |
Damjan Marion | 085757b | 2023-01-30 11:48:38 +0100 | [diff] [blame] | 713 | if (err && s->fd > -1) |
| 714 | { |
| 715 | close (s->fd); |
| 716 | s->fd = -1; |
| 717 | } |
| 718 | #if CLIB_LINUX |
| 719 | if (netns_fd != -1) |
| 720 | { |
| 721 | setns (CLONE_NEWNET, netns_fd); |
| 722 | close (netns_fd); |
| 723 | } |
| 724 | #endif |
| 725 | vec_free (name); |
| 726 | return err; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 727 | } |
| 728 | |
Damjan Marion | dae1c7e | 2020-10-17 13:32:25 +0200 | [diff] [blame] | 729 | __clib_export clib_error_t * |
Nathan Skrzypczak | 4cef6de | 2021-07-19 18:21:43 +0200 | [diff] [blame] | 730 | clib_socket_init_netns (clib_socket_t *s, u8 *namespace) |
| 731 | { |
| 732 | if (namespace == NULL || namespace[0] == 0) |
| 733 | return clib_socket_init (s); |
| 734 | |
| 735 | clib_error_t *error; |
Nathan Skrzypczak | 9218c60 | 2021-07-27 19:51:27 +0200 | [diff] [blame] | 736 | int old_netns_fd, nfd = -1; |
Nathan Skrzypczak | 4cef6de | 2021-07-19 18:21:43 +0200 | [diff] [blame] | 737 | |
| 738 | old_netns_fd = clib_netns_open (NULL /* self */); |
Florin Coras | 807868d | 2021-10-12 08:52:12 -0700 | [diff] [blame] | 739 | if (old_netns_fd < 0) |
| 740 | return clib_error_return_unix (0, "get current netns failed"); |
| 741 | |
Nathan Skrzypczak | 4cef6de | 2021-07-19 18:21:43 +0200 | [diff] [blame] | 742 | if ((nfd = clib_netns_open (namespace)) == -1) |
| 743 | { |
| 744 | error = clib_error_return_unix (0, "clib_netns_open '%s'", namespace); |
| 745 | goto done; |
| 746 | } |
| 747 | |
| 748 | if (clib_setns (nfd) == -1) |
| 749 | { |
| 750 | error = clib_error_return_unix (0, "setns '%s'", namespace); |
| 751 | goto done; |
| 752 | } |
| 753 | |
| 754 | error = clib_socket_init (s); |
| 755 | |
| 756 | done: |
| 757 | if (clib_setns (old_netns_fd) == -1) |
| 758 | clib_warning ("Cannot set old ns"); |
Nathan Skrzypczak | 9218c60 | 2021-07-27 19:51:27 +0200 | [diff] [blame] | 759 | |
Nathan Skrzypczak | 4cef6de | 2021-07-19 18:21:43 +0200 | [diff] [blame] | 760 | close (old_netns_fd); |
| 761 | |
Nathan Skrzypczak | 9218c60 | 2021-07-27 19:51:27 +0200 | [diff] [blame] | 762 | if (-1 != nfd) |
| 763 | close (nfd); |
| 764 | |
Nathan Skrzypczak | 4cef6de | 2021-07-19 18:21:43 +0200 | [diff] [blame] | 765 | return error; |
| 766 | } |
| 767 | |
| 768 | __clib_export clib_error_t * |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 769 | clib_socket_accept (clib_socket_t * server, clib_socket_t * client) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 770 | { |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 771 | clib_error_t *err = 0; |
| 772 | socklen_t len = 0; |
| 773 | |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 774 | clib_memset (client, 0, sizeof (client[0])); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 775 | |
| 776 | /* Accept the new socket connection. */ |
| 777 | client->fd = accept (server->fd, 0, 0); |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 778 | if (client->fd < 0) |
Dave Wallace | 70ec09d | 2017-09-06 16:45:04 -0400 | [diff] [blame] | 779 | return clib_error_return_unix (0, "accept (fd %d, '%s')", |
| 780 | server->fd, server->config); |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 781 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 782 | /* Set the new socket to be non-blocking. */ |
| 783 | if (fcntl (client->fd, F_SETFL, O_NONBLOCK) < 0) |
| 784 | { |
Dave Wallace | 70ec09d | 2017-09-06 16:45:04 -0400 | [diff] [blame] | 785 | err = clib_error_return_unix (0, "fcntl O_NONBLOCK (fd %d)", |
| 786 | client->fd); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 787 | goto close_client; |
| 788 | } |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 789 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 790 | /* Get peer info. */ |
| 791 | len = sizeof (client->peer); |
| 792 | if (getpeername (client->fd, (struct sockaddr *) &client->peer, &len) < 0) |
| 793 | { |
Dave Wallace | 70ec09d | 2017-09-06 16:45:04 -0400 | [diff] [blame] | 794 | err = clib_error_return_unix (0, "getpeername (fd %d)", client->fd); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 795 | goto close_client; |
| 796 | } |
| 797 | |
Damjan Marion | f49921f | 2017-09-11 16:52:11 +0200 | [diff] [blame] | 798 | client->flags = CLIB_SOCKET_F_IS_CLIENT; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 799 | |
| 800 | socket_init_funcs (client); |
| 801 | return 0; |
| 802 | |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 803 | close_client: |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 804 | close (client->fd); |
| 805 | return err; |
| 806 | } |
Dave Barach | c379999 | 2016-08-15 11:12:27 -0400 | [diff] [blame] | 807 | |
| 808 | /* |
| 809 | * fd.io coding-style-patch-verification: ON |
| 810 | * |
| 811 | * Local Variables: |
| 812 | * eval: (c-set-style "gnu") |
| 813 | * End: |
| 814 | */ |