ahedberg | 80d6b12 | 2016-03-17 17:37:35 -0400 | [diff] [blame] | 1 | /* |
| 2 | * |
ahedberg | 8afb88d | 2016-03-22 13:57:47 -0400 | [diff] [blame] | 3 | * Copyright 2016, Google Inc. |
ahedberg | 80d6b12 | 2016-03-17 17:37:35 -0400 | [diff] [blame] | 4 | * All rights reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions are |
| 8 | * met: |
| 9 | * |
| 10 | * * Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * * Redistributions in binary form must reproduce the above |
| 13 | * copyright notice, this list of conditions and the following disclaimer |
| 14 | * in the documentation and/or other materials provided with the |
| 15 | * distribution. |
| 16 | * * Neither the name of Google Inc. nor the names of its |
| 17 | * contributors may be used to endorse or promote products derived from |
| 18 | * this software without specific prior written permission. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 21 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 22 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 23 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 24 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 25 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 26 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 27 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 28 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 29 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 30 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | * |
| 32 | */ |
murgatroid99 | 5407089 | 2016-08-08 17:01:18 -0700 | [diff] [blame] | 33 | #include "src/core/lib/iomgr/port.h" |
ahedberg | 80d6b12 | 2016-03-17 17:37:35 -0400 | [diff] [blame] | 34 | |
murgatroid99 | 623dd4f | 2016-08-08 17:31:27 -0700 | [diff] [blame] | 35 | #ifdef GRPC_HAVE_UNIX_SOCKET |
ahedberg | 80d6b12 | 2016-03-17 17:37:35 -0400 | [diff] [blame] | 36 | |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 37 | #include "src/core/lib/iomgr/sockaddr.h" |
| 38 | |
ahedberg | 799fd4b | 2016-03-22 13:47:46 -0400 | [diff] [blame] | 39 | #include <string.h> |
ahedberg | 43df295 | 2016-03-18 10:46:38 -0400 | [diff] [blame] | 40 | #include <sys/stat.h> |
Craig Tiller | f40df23 | 2016-03-25 13:38:14 -0700 | [diff] [blame] | 41 | #include <sys/types.h> |
ahedberg | 80d6b12 | 2016-03-17 17:37:35 -0400 | [diff] [blame] | 42 | #include <sys/un.h> |
| 43 | |
murgatroid99 | 5407089 | 2016-08-08 17:01:18 -0700 | [diff] [blame] | 44 | #include "src/core/lib/iomgr/unix_sockets_posix.h" |
| 45 | |
ahedberg | 80d6b12 | 2016-03-17 17:37:35 -0400 | [diff] [blame] | 46 | #include <grpc/support/alloc.h> |
Craig Tiller | f82ddc4 | 2016-04-05 17:15:07 -0700 | [diff] [blame] | 47 | #include <grpc/support/log.h> |
ahedberg | 80d6b12 | 2016-03-17 17:37:35 -0400 | [diff] [blame] | 48 | |
| 49 | void grpc_create_socketpair_if_unix(int sv[2]) { |
| 50 | GPR_ASSERT(socketpair(AF_UNIX, SOCK_STREAM, 0, sv) == 0); |
| 51 | } |
| 52 | |
Craig Tiller | 2b782d8 | 2016-05-04 16:29:57 -0700 | [diff] [blame] | 53 | grpc_error *grpc_resolve_unix_domain_address(const char *name, |
| 54 | grpc_resolved_addresses **addrs) { |
ahedberg | 80d6b12 | 2016-03-17 17:37:35 -0400 | [diff] [blame] | 55 | struct sockaddr_un *un; |
| 56 | |
Craig Tiller | 2b782d8 | 2016-05-04 16:29:57 -0700 | [diff] [blame] | 57 | *addrs = gpr_malloc(sizeof(grpc_resolved_addresses)); |
| 58 | (*addrs)->naddrs = 1; |
| 59 | (*addrs)->addrs = gpr_malloc(sizeof(grpc_resolved_address)); |
| 60 | un = (struct sockaddr_un *)(*addrs)->addrs->addr; |
ahedberg | 80d6b12 | 2016-03-17 17:37:35 -0400 | [diff] [blame] | 61 | un->sun_family = AF_UNIX; |
| 62 | strcpy(un->sun_path, name); |
Craig Tiller | 2b782d8 | 2016-05-04 16:29:57 -0700 | [diff] [blame] | 63 | (*addrs)->addrs->len = strlen(un->sun_path) + sizeof(un->sun_family) + 1; |
| 64 | return GRPC_ERROR_NONE; |
ahedberg | 80d6b12 | 2016-03-17 17:37:35 -0400 | [diff] [blame] | 65 | } |
| 66 | |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 67 | int grpc_is_unix_socket(const grpc_resolved_address *resolved_addr) { |
| 68 | const struct sockaddr *addr = (const struct sockaddr *)resolved_addr->addr; |
ahedberg | 43df295 | 2016-03-18 10:46:38 -0400 | [diff] [blame] | 69 | return addr->sa_family == AF_UNIX; |
ahedberg | 80d6b12 | 2016-03-17 17:37:35 -0400 | [diff] [blame] | 70 | } |
| 71 | |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 72 | void grpc_unlink_if_unix_domain_socket( |
| 73 | const grpc_resolved_address *resolved_addr) { |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 74 | const struct sockaddr *addr = (const struct sockaddr *)resolved_addr->addr; |
ahedberg | 80d6b12 | 2016-03-17 17:37:35 -0400 | [diff] [blame] | 75 | if (addr->sa_family != AF_UNIX) { |
| 76 | return; |
| 77 | } |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 78 | struct sockaddr_un *un = (struct sockaddr_un *)resolved_addr->addr; |
ahedberg | 80d6b12 | 2016-03-17 17:37:35 -0400 | [diff] [blame] | 79 | struct stat st; |
| 80 | |
| 81 | if (stat(un->sun_path, &st) == 0 && (st.st_mode & S_IFMT) == S_IFSOCK) { |
| 82 | unlink(un->sun_path); |
| 83 | } |
| 84 | } |
| 85 | |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 86 | char *grpc_sockaddr_to_uri_unix_if_possible( |
| 87 | const grpc_resolved_address *resolved_addr) { |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 88 | const struct sockaddr *addr = (const struct sockaddr *)resolved_addr->addr; |
ahedberg | 80d6b12 | 2016-03-17 17:37:35 -0400 | [diff] [blame] | 89 | if (addr->sa_family != AF_UNIX) { |
| 90 | return NULL; |
| 91 | } |
| 92 | |
ahedberg | 8afb88d | 2016-03-22 13:57:47 -0400 | [diff] [blame] | 93 | char *result; |
murgatroid99 | dedb923 | 2016-09-26 13:54:04 -0700 | [diff] [blame] | 94 | gpr_asprintf(&result, "unix:%s", ((struct sockaddr_un *)addr)->sun_path); |
ahedberg | 80d6b12 | 2016-03-17 17:37:35 -0400 | [diff] [blame] | 95 | return result; |
| 96 | } |
| 97 | |
| 98 | #endif |