| /* |
| * |
| * Copyright 2015, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #include <grpc/support/port_platform.h> |
| #ifdef GPR_POSIX_SOCKET |
| |
| #include "src/core/iomgr/sockaddr.h" |
| #include "src/core/iomgr/resolve_address.h" |
| |
| #include <sys/types.h> |
| #include <sys/un.h> |
| #include <string.h> |
| |
| #include "src/core/iomgr/iomgr_internal.h" |
| #include "src/core/iomgr/sockaddr_utils.h" |
| #include "src/core/support/string.h" |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/host_port.h> |
| #include <grpc/support/log.h> |
| #include <grpc/support/string_util.h> |
| #include <grpc/support/thd.h> |
| #include <grpc/support/time.h> |
| |
| typedef struct |
| { |
| char *name; |
| char *default_port; |
| grpc_resolve_cb cb; |
| void *arg; |
| grpc_iomgr_object iomgr_object; |
| } request; |
| |
| grpc_resolved_addresses * |
| grpc_blocking_resolve_address (const char *name, const char *default_port) |
| { |
| struct addrinfo hints; |
| struct addrinfo *result = NULL, *resp; |
| char *host; |
| char *port; |
| int s; |
| size_t i; |
| grpc_resolved_addresses *addrs = NULL; |
| struct sockaddr_un *un; |
| |
| if (name[0] == 'u' && name[1] == 'n' && name[2] == 'i' && name[3] == 'x' && name[4] == ':' && name[5] != 0) |
| { |
| addrs = gpr_malloc (sizeof (grpc_resolved_addresses)); |
| addrs->naddrs = 1; |
| addrs->addrs = gpr_malloc (sizeof (grpc_resolved_address)); |
| un = (struct sockaddr_un *) addrs->addrs->addr; |
| un->sun_family = AF_UNIX; |
| strcpy (un->sun_path, name + 5); |
| addrs->addrs->len = strlen (un->sun_path) + sizeof (un->sun_family) + 1; |
| return addrs; |
| } |
| |
| /* parse name, splitting it into host and port parts */ |
| gpr_split_host_port (name, &host, &port); |
| if (host == NULL) |
| { |
| gpr_log (GPR_ERROR, "unparseable host:port: '%s'", name); |
| goto done; |
| } |
| if (port == NULL) |
| { |
| if (default_port == NULL) |
| { |
| gpr_log (GPR_ERROR, "no port in name '%s'", name); |
| goto done; |
| } |
| port = gpr_strdup (default_port); |
| } |
| |
| /* Call getaddrinfo */ |
| memset (&hints, 0, sizeof (hints)); |
| hints.ai_family = AF_UNSPEC; /* ipv4 or ipv6 */ |
| hints.ai_socktype = SOCK_STREAM; /* stream socket */ |
| hints.ai_flags = AI_PASSIVE; /* for wildcard IP address */ |
| |
| s = getaddrinfo (host, port, &hints, &result); |
| if (s != 0) |
| { |
| /* Retry if well-known service name is recognized */ |
| char *svc[][2] = { {"http", "80"}, {"https", "443"} }; |
| int i; |
| for (i = 0; i < (int) (sizeof (svc) / sizeof (svc[0])); i++) |
| { |
| if (strcmp (port, svc[i][0]) == 0) |
| { |
| s = getaddrinfo (host, svc[i][1], &hints, &result); |
| break; |
| } |
| } |
| } |
| |
| if (s != 0) |
| { |
| gpr_log (GPR_ERROR, "getaddrinfo: %s", gai_strerror (s)); |
| goto done; |
| } |
| |
| /* Success path: set addrs non-NULL, fill it in */ |
| addrs = gpr_malloc (sizeof (grpc_resolved_addresses)); |
| addrs->naddrs = 0; |
| for (resp = result; resp != NULL; resp = resp->ai_next) |
| { |
| addrs->naddrs++; |
| } |
| addrs->addrs = gpr_malloc (sizeof (grpc_resolved_address) * addrs->naddrs); |
| i = 0; |
| for (resp = result; resp != NULL; resp = resp->ai_next) |
| { |
| memcpy (&addrs->addrs[i].addr, resp->ai_addr, resp->ai_addrlen); |
| addrs->addrs[i].len = resp->ai_addrlen; |
| i++; |
| } |
| |
| done: |
| gpr_free (host); |
| gpr_free (port); |
| if (result) |
| { |
| freeaddrinfo (result); |
| } |
| return addrs; |
| } |
| |
| /* Thread function to asynch-ify grpc_blocking_resolve_address */ |
| static void |
| do_request_thread (void *rp) |
| { |
| request *r = rp; |
| grpc_closure_list closure_list = GRPC_CLOSURE_LIST_INIT; |
| grpc_resolved_addresses *resolved = grpc_blocking_resolve_address (r->name, r->default_port); |
| void *arg = r->arg; |
| grpc_resolve_cb cb = r->cb; |
| gpr_free (r->name); |
| gpr_free (r->default_port); |
| cb (arg, resolved, &closure_list); |
| grpc_iomgr_unregister_object (&r->iomgr_object); |
| gpr_free (r); |
| grpc_closure_list_run (&closure_list); |
| } |
| |
| void |
| grpc_resolved_addresses_destroy (grpc_resolved_addresses * addrs) |
| { |
| gpr_free (addrs->addrs); |
| gpr_free (addrs); |
| } |
| |
| void |
| grpc_resolve_address (const char *name, const char *default_port, grpc_resolve_cb cb, void *arg) |
| { |
| request *r = gpr_malloc (sizeof (request)); |
| gpr_thd_id id; |
| char *tmp; |
| gpr_asprintf (&tmp, "resolve_address:name='%s':default_port='%s'", name, default_port); |
| grpc_iomgr_register_object (&r->iomgr_object, tmp); |
| gpr_free (tmp); |
| r->name = gpr_strdup (name); |
| r->default_port = gpr_strdup (default_port); |
| r->cb = cb; |
| r->arg = arg; |
| gpr_thd_new (&id, do_request_thread, r, NULL); |
| } |
| |
| #endif |