1fab62b1e1
file into smaller pieces that are hopefully easier to understand and extend. This is to pave the ground for adding few more socket timestamp formats that I am working on here. No functional changes (I hope).
126 lines
3.4 KiB
C
126 lines
3.4 KiB
C
/*-
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* Copyright (c) 2005 Andrey Simonenko
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <inttypes.h>
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#include <stdarg.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include "uc_common.h"
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#include "t_generic.h"
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#include "t_cmsgcred.h"
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#include "t_cmsgcred_sockcred.h"
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static int
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t_cmsgcred_sockcred_server(int fd1)
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{
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struct msghdr msghdr;
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struct iovec iov[1];
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struct cmsghdr *cmsghdr;
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void *cmsg_data, *cmsg1_data, *cmsg2_data;
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size_t cmsg_size, cmsg1_size, cmsg2_size;
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u_int i;
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int fd2, rv, val;
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fd2 = -1;
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rv = -2;
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cmsg1_size = CMSG_SPACE(SOCKCREDSIZE(uc_cfg.proc_cred.gid_num));
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cmsg2_size = CMSG_SPACE(sizeof(struct cmsgcred));
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cmsg1_data = malloc(cmsg1_size);
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cmsg2_data = malloc(cmsg2_size);
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if (cmsg1_data == NULL || cmsg2_data == NULL) {
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uc_logmsg("malloc");
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goto done;
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}
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uc_dbgmsg("setting LOCAL_CREDS");
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val = 1;
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if (setsockopt(fd1, 0, LOCAL_CREDS, &val, sizeof(val)) < 0) {
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uc_logmsg("setsockopt(LOCAL_CREDS)");
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goto done;
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}
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if (uc_sync_send() < 0)
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goto done;
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if (uc_cfg.sock_type == SOCK_STREAM) {
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fd2 = uc_socket_accept(fd1);
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if (fd2 < 0)
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goto done;
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} else
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fd2 = fd1;
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cmsg_data = cmsg1_data;
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cmsg_size = cmsg1_size;
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rv = -1;
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for (i = 1; i <= uc_cfg.ipc_msg.msg_num; ++i) {
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uc_dbgmsg("message #%u", i);
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uc_msghdr_init_server(&msghdr, iov, cmsg_data, cmsg_size);
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if (uc_message_recv(fd2, &msghdr) < 0) {
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rv = -2;
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break;
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}
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if (uc_check_msghdr(&msghdr, sizeof(*cmsghdr)) < 0)
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break;
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cmsghdr = CMSG_FIRSTHDR(&msghdr);
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if (i == 1 || uc_cfg.sock_type == SOCK_DGRAM) {
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if (uc_check_scm_creds_sockcred(cmsghdr) < 0)
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break;
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} else {
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if (uc_check_scm_creds_cmsgcred(cmsghdr) < 0)
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break;
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}
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cmsg_data = cmsg2_data;
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cmsg_size = cmsg2_size;
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}
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if (i > uc_cfg.ipc_msg.msg_num)
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rv = 0;
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done:
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free(cmsg1_data);
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free(cmsg2_data);
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if (uc_cfg.sock_type == SOCK_STREAM && fd2 >= 0)
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if (uc_socket_close(fd2) < 0)
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rv = -2;
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return (rv);
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}
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int
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t_cmsgcred_sockcred(void)
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{
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return (t_generic(t_cmsgcred_client, t_cmsgcred_sockcred_server));
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}
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