Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 1 | /* |
| 2 | * |
Craig Tiller | 6169d5f | 2016-03-31 07:46:18 -0700 | [diff] [blame] | 3 | * Copyright 2015, Google Inc. |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [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 | */ |
| 33 | |
murgatroid99 | 5407089 | 2016-08-08 17:01:18 -0700 | [diff] [blame] | 34 | #include "src/core/lib/iomgr/port.h" |
murgatroid99 | 623dd4f | 2016-08-08 17:31:27 -0700 | [diff] [blame] | 35 | #ifdef GRPC_POSIX_SOCKET |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 36 | |
Craig Tiller | 9533d04 | 2016-03-25 17:11:06 -0700 | [diff] [blame] | 37 | #include "src/core/lib/iomgr/sockaddr.h" |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 38 | |
murgatroid99 | 7871f73 | 2016-09-23 13:49:05 -0700 | [diff] [blame] | 39 | #include "src/core/lib/iomgr/resolve_address.h" |
| 40 | |
Craig Tiller | e1e4559 | 2016-03-11 08:01:58 -0800 | [diff] [blame] | 41 | #include <string.h> |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 42 | #include <sys/types.h> |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 43 | |
| 44 | #include <grpc/support/alloc.h> |
Nicolas "Pixel" Noble | 589cba2 | 2015-02-20 22:58:54 -0800 | [diff] [blame] | 45 | #include <grpc/support/host_port.h> |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 46 | #include <grpc/support/log.h> |
Masood Malekghassemi | 701af60 | 2015-06-03 15:01:17 -0700 | [diff] [blame] | 47 | #include <grpc/support/string_util.h> |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 48 | #include <grpc/support/thd.h> |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 49 | #include <grpc/support/time.h> |
Craig Tiller | b9d3596 | 2015-09-11 13:31:16 -0700 | [diff] [blame] | 50 | #include <grpc/support/useful.h> |
Craig Tiller | 9533d04 | 2016-03-25 17:11:06 -0700 | [diff] [blame] | 51 | #include "src/core/lib/iomgr/executor.h" |
| 52 | #include "src/core/lib/iomgr/iomgr_internal.h" |
Craig Tiller | 9533d04 | 2016-03-25 17:11:06 -0700 | [diff] [blame] | 53 | #include "src/core/lib/iomgr/unix_sockets_posix.h" |
| 54 | #include "src/core/lib/support/block_annotate.h" |
| 55 | #include "src/core/lib/support/string.h" |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 56 | |
Craig Tiller | 5b15afd | 2016-05-04 15:00:14 -0700 | [diff] [blame] | 57 | static grpc_error *blocking_resolve_address_impl( |
| 58 | const char *name, const char *default_port, |
| 59 | grpc_resolved_addresses **addresses) { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 60 | struct addrinfo hints; |
| 61 | struct addrinfo *result = NULL, *resp; |
| 62 | char *host; |
| 63 | char *port; |
| 64 | int s; |
| 65 | size_t i; |
Craig Tiller | 5b15afd | 2016-05-04 15:00:14 -0700 | [diff] [blame] | 66 | grpc_error *err; |
Craig Tiller | ae7fe92 | 2015-02-13 23:16:32 -0800 | [diff] [blame] | 67 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 68 | if (name[0] == 'u' && name[1] == 'n' && name[2] == 'i' && name[3] == 'x' && |
| 69 | name[4] == ':' && name[5] != 0) { |
Craig Tiller | 5b15afd | 2016-05-04 15:00:14 -0700 | [diff] [blame] | 70 | return grpc_resolve_unix_domain_address(name + 5, addresses); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 71 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 72 | |
| 73 | /* parse name, splitting it into host and port parts */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 74 | gpr_split_host_port(name, &host, &port); |
| 75 | if (host == NULL) { |
Craig Tiller | 5b15afd | 2016-05-04 15:00:14 -0700 | [diff] [blame] | 76 | err = grpc_error_set_str(GRPC_ERROR_CREATE("unparseable host:port"), |
| 77 | GRPC_ERROR_STR_TARGET_ADDRESS, name); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 78 | goto done; |
| 79 | } |
| 80 | if (port == NULL) { |
| 81 | if (default_port == NULL) { |
Craig Tiller | 5b15afd | 2016-05-04 15:00:14 -0700 | [diff] [blame] | 82 | err = grpc_error_set_str(GRPC_ERROR_CREATE("no port in name"), |
| 83 | GRPC_ERROR_STR_TARGET_ADDRESS, name); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 84 | goto done; |
| 85 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 86 | port = gpr_strdup(default_port); |
| 87 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 88 | |
| 89 | /* Call getaddrinfo */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 90 | memset(&hints, 0, sizeof(hints)); |
| 91 | hints.ai_family = AF_UNSPEC; /* ipv4 or ipv6 */ |
| 92 | hints.ai_socktype = SOCK_STREAM; /* stream socket */ |
| 93 | hints.ai_flags = AI_PASSIVE; /* for wildcard IP address */ |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 94 | |
vjpai | 9839d28 | 2015-09-24 17:55:18 -0700 | [diff] [blame] | 95 | GRPC_SCHEDULING_START_BLOCKING_REGION; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 96 | s = getaddrinfo(host, port, &hints, &result); |
vjpai | 9839d28 | 2015-09-24 17:55:18 -0700 | [diff] [blame] | 97 | GRPC_SCHEDULING_END_BLOCKING_REGION; |
Vijay Pai | ba13055 | 2015-09-24 13:43:01 -0700 | [diff] [blame] | 98 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 99 | if (s != 0) { |
| 100 | /* Retry if well-known service name is recognized */ |
| 101 | char *svc[][2] = {{"http", "80"}, {"https", "443"}}; |
Craig Tiller | b9d3596 | 2015-09-11 13:31:16 -0700 | [diff] [blame] | 102 | for (i = 0; i < GPR_ARRAY_SIZE(svc); i++) { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 103 | if (strcmp(port, svc[i][0]) == 0) { |
vjpai | 9839d28 | 2015-09-24 17:55:18 -0700 | [diff] [blame] | 104 | GRPC_SCHEDULING_START_BLOCKING_REGION; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 105 | s = getaddrinfo(host, svc[i][1], &hints, &result); |
vjpai | 9839d28 | 2015-09-24 17:55:18 -0700 | [diff] [blame] | 106 | GRPC_SCHEDULING_END_BLOCKING_REGION; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 107 | break; |
| 108 | } |
Raul Silvera | 659be5a | 2015-03-04 11:51:11 -0800 | [diff] [blame] | 109 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 110 | } |
Raul Silvera | 659be5a | 2015-03-04 11:51:11 -0800 | [diff] [blame] | 111 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 112 | if (s != 0) { |
Craig Tiller | 5b15afd | 2016-05-04 15:00:14 -0700 | [diff] [blame] | 113 | err = grpc_error_set_str( |
| 114 | grpc_error_set_str( |
| 115 | grpc_error_set_str(grpc_error_set_int(GRPC_ERROR_CREATE("OS Error"), |
| 116 | GRPC_ERROR_INT_ERRNO, s), |
| 117 | GRPC_ERROR_STR_OS_ERROR, gai_strerror(s)), |
| 118 | GRPC_ERROR_STR_SYSCALL, "getaddrinfo"), |
| 119 | GRPC_ERROR_STR_TARGET_ADDRESS, name); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 120 | goto done; |
| 121 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 122 | |
| 123 | /* Success path: set addrs non-NULL, fill it in */ |
Craig Tiller | 5b15afd | 2016-05-04 15:00:14 -0700 | [diff] [blame] | 124 | *addresses = gpr_malloc(sizeof(grpc_resolved_addresses)); |
| 125 | (*addresses)->naddrs = 0; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 126 | for (resp = result; resp != NULL; resp = resp->ai_next) { |
Craig Tiller | 5b15afd | 2016-05-04 15:00:14 -0700 | [diff] [blame] | 127 | (*addresses)->naddrs++; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 128 | } |
Craig Tiller | 5b15afd | 2016-05-04 15:00:14 -0700 | [diff] [blame] | 129 | (*addresses)->addrs = |
| 130 | gpr_malloc(sizeof(grpc_resolved_address) * (*addresses)->naddrs); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 131 | i = 0; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 132 | for (resp = result; resp != NULL; resp = resp->ai_next) { |
Craig Tiller | 5b15afd | 2016-05-04 15:00:14 -0700 | [diff] [blame] | 133 | memcpy(&(*addresses)->addrs[i].addr, resp->ai_addr, resp->ai_addrlen); |
| 134 | (*addresses)->addrs[i].len = resp->ai_addrlen; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 135 | i++; |
| 136 | } |
Craig Tiller | 5b15afd | 2016-05-04 15:00:14 -0700 | [diff] [blame] | 137 | err = GRPC_ERROR_NONE; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 138 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 139 | done: |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 140 | gpr_free(host); |
| 141 | gpr_free(port); |
| 142 | if (result) { |
| 143 | freeaddrinfo(result); |
| 144 | } |
Craig Tiller | 5b15afd | 2016-05-04 15:00:14 -0700 | [diff] [blame] | 145 | return err; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 146 | } |
| 147 | |
Craig Tiller | 5b15afd | 2016-05-04 15:00:14 -0700 | [diff] [blame] | 148 | grpc_error *(*grpc_blocking_resolve_address)( |
| 149 | const char *name, const char *default_port, |
| 150 | grpc_resolved_addresses **addresses) = blocking_resolve_address_impl; |
| 151 | |
| 152 | typedef struct { |
| 153 | char *name; |
| 154 | char *default_port; |
| 155 | grpc_closure *on_done; |
| 156 | grpc_resolved_addresses **addrs_out; |
| 157 | grpc_closure request_closure; |
| 158 | void *arg; |
| 159 | } request; |
Craig Tiller | e1e4559 | 2016-03-11 08:01:58 -0800 | [diff] [blame] | 160 | |
David Garcia Quintas | 4bc3463 | 2015-10-07 16:12:35 -0700 | [diff] [blame] | 161 | /* Callback to be passed to grpc_executor to asynch-ify |
| 162 | * grpc_blocking_resolve_address */ |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 163 | static void do_request_thread(grpc_exec_ctx *exec_ctx, void *rp, |
| 164 | grpc_error *error) { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 165 | request *r = rp; |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 166 | grpc_closure_sched( |
Craig Tiller | 5b15afd | 2016-05-04 15:00:14 -0700 | [diff] [blame] | 167 | exec_ctx, r->on_done, |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 168 | grpc_blocking_resolve_address(r->name, r->default_port, r->addrs_out)); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 169 | gpr_free(r->name); |
| 170 | gpr_free(r->default_port); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 171 | gpr_free(r); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 172 | } |
| 173 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 174 | void grpc_resolved_addresses_destroy(grpc_resolved_addresses *addrs) { |
David Garcia Quintas | d5520c1 | 2016-05-10 16:03:12 -0700 | [diff] [blame] | 175 | if (addrs != NULL) { |
| 176 | gpr_free(addrs->addrs); |
| 177 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 178 | gpr_free(addrs); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 179 | } |
| 180 | |
Craig Tiller | 24d687e | 2016-04-13 19:47:27 -0700 | [diff] [blame] | 181 | static void resolve_address_impl(grpc_exec_ctx *exec_ctx, const char *name, |
Craig Tiller | 5b15afd | 2016-05-04 15:00:14 -0700 | [diff] [blame] | 182 | const char *default_port, |
Yuchen Zeng | 15521de | 2016-11-17 20:39:27 -0800 | [diff] [blame] | 183 | grpc_pollset_set *interested_parties, |
Craig Tiller | 5b15afd | 2016-05-04 15:00:14 -0700 | [diff] [blame] | 184 | grpc_closure *on_done, |
| 185 | grpc_resolved_addresses **addrs) { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 186 | request *r = gpr_malloc(sizeof(request)); |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 187 | grpc_closure_init(&r->request_closure, do_request_thread, r, |
| 188 | grpc_executor_scheduler); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 189 | r->name = gpr_strdup(name); |
| 190 | r->default_port = gpr_strdup(default_port); |
Craig Tiller | 5b15afd | 2016-05-04 15:00:14 -0700 | [diff] [blame] | 191 | r->on_done = on_done; |
| 192 | r->addrs_out = addrs; |
Craig Tiller | 91031da | 2016-12-28 15:44:25 -0800 | [diff] [blame] | 193 | grpc_closure_sched(exec_ctx, &r->request_closure, GRPC_ERROR_NONE); |
Craig Tiller | 190d360 | 2015-02-18 09:23:38 -0800 | [diff] [blame] | 194 | } |
Nicolas "Pixel" Noble | 94964fd | 2015-02-21 07:19:19 +0100 | [diff] [blame] | 195 | |
Yuchen Zeng | 15521de | 2016-11-17 20:39:27 -0800 | [diff] [blame] | 196 | void (*grpc_resolve_address)( |
| 197 | grpc_exec_ctx *exec_ctx, const char *name, const char *default_port, |
| 198 | grpc_pollset_set *interested_parties, grpc_closure *on_done, |
| 199 | grpc_resolved_addresses **addrs) = resolve_address_impl; |
Craig Tiller | 24d687e | 2016-04-13 19:47:27 -0700 | [diff] [blame] | 200 | |
Nicolas "Pixel" Noble | 94964fd | 2015-02-21 07:19:19 +0100 | [diff] [blame] | 201 | #endif |