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/*
*
* Copyright 2016, 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 "src/core/lib/iomgr/port.h"
#ifdef GRPC_HAVE_UNIX_SOCKET
#include "src/core/lib/iomgr/sockaddr.h"
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/un.h>
#include "src/core/lib/iomgr/unix_sockets_posix.h"
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include <grpc/support/useful.h>
void grpc_create_socketpair_if_unix(int sv[2]) {
GPR_ASSERT(socketpair(AF_UNIX, SOCK_STREAM, 0, sv) == 0);
}
grpc_error *grpc_resolve_unix_domain_address(const char *name,
grpc_resolved_addresses **addrs) {
struct sockaddr_un *un;
if (strlen(name) > GPR_ARRAY_SIZE(((struct sockaddr_un *)0)->sun_path) - 1) {
char *err_msg;
grpc_error *err;
gpr_asprintf(&err_msg,
"Path name should not have more than %" PRIuPTR " characters.",
GPR_ARRAY_SIZE(un->sun_path) - 1);
err = GRPC_ERROR_CREATE_FROM_COPIED_STRING(err_msg);
gpr_free(err_msg);
return err;
}
*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);
(*addrs)->addrs->len = strlen(un->sun_path) + sizeof(un->sun_family) + 1;
return GRPC_ERROR_NONE;
}
int grpc_is_unix_socket(const grpc_resolved_address *resolved_addr) {
const struct sockaddr *addr = (const struct sockaddr *)resolved_addr->addr;
return addr->sa_family == AF_UNIX;
}
void grpc_unlink_if_unix_domain_socket(
const grpc_resolved_address *resolved_addr) {
const struct sockaddr *addr = (const struct sockaddr *)resolved_addr->addr;
if (addr->sa_family != AF_UNIX) {
return;
}
struct sockaddr_un *un = (struct sockaddr_un *)resolved_addr->addr;
struct stat st;
if (stat(un->sun_path, &st) == 0 && (st.st_mode & S_IFMT) == S_IFSOCK) {
unlink(un->sun_path);
}
}
char *grpc_sockaddr_to_uri_unix_if_possible(
const grpc_resolved_address *resolved_addr) {
const struct sockaddr *addr = (const struct sockaddr *)resolved_addr->addr;
if (addr->sa_family != AF_UNIX) {
return NULL;
}
char *result;
gpr_asprintf(&result, "unix:%s", ((struct sockaddr_un *)addr)->sun_path);
return result;
}
#endif
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