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/* $OpenBSD: privsep.c,v 1.40 2016/02/06 19:30:52 krw Exp $ */ |
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/* |
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* Copyright (c) 2004 Henning Brauer <henning@openbsd.org> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN |
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* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
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* OF OR IN CONNECTION WITH THE USE, ABUSE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <sys/queue.h> |
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#include <sys/socket.h> |
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#include <net/if.h> |
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#include <netinet/in.h> |
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#include <netinet/if_ether.h> |
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#include <errno.h> |
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#include <imsg.h> |
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#include <signal.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include "dhcp.h" |
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#include "dhcpd.h" |
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#include "privsep.h" |
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void |
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dispatch_imsg(struct imsgbuf *ibuf) |
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{ |
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struct imsg imsg; |
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ssize_t n; |
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for (;;) { |
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if ((n = imsg_get(ibuf, &imsg)) == -1) |
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error("dispatch_imsg: imsg_get failure: %s", |
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strerror(errno)); |
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if (n == 0) |
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break; |
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switch (imsg.hdr.type) { |
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case IMSG_DELETE_ADDRESS: |
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if (imsg.hdr.len != IMSG_HEADER_SIZE + |
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sizeof(struct imsg_delete_address)) |
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warning("bad IMSG_DELETE_ADDRESS"); |
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else |
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priv_delete_address(imsg.data); |
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break; |
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case IMSG_ADD_ADDRESS: |
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if (imsg.hdr.len != IMSG_HEADER_SIZE + |
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sizeof(struct imsg_add_address)) |
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warning("bad IMSG_ADD_ADDRESS"); |
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else |
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priv_add_address(imsg.data); |
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break; |
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case IMSG_FLUSH_ROUTES: |
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if (imsg.hdr.len != IMSG_HEADER_SIZE + |
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sizeof(struct imsg_flush_routes)) |
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warning("bad IMSG_FLUSH_ROUTES"); |
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else |
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priv_flush_routes(imsg.data); |
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break; |
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case IMSG_ADD_ROUTE: |
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if (imsg.hdr.len != IMSG_HEADER_SIZE + |
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sizeof(struct imsg_add_route)) |
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warning("bad IMSG_ADD_ROUTE"); |
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else |
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priv_add_route(imsg.data); |
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break; |
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case IMSG_SET_INTERFACE_MTU: |
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if (imsg.hdr.len != IMSG_HEADER_SIZE + |
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sizeof(struct imsg_set_interface_mtu)) |
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warning("bad IMSG_SET_INTERFACE_MTU"); |
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else |
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priv_set_interface_mtu(imsg.data); |
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break; |
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case IMSG_HUP: |
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if (imsg.hdr.len != IMSG_HEADER_SIZE + |
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sizeof(struct imsg_hup)) |
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warning("bad IMSG_HUP"); |
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else { |
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ifi->flags |= IFI_HUP; |
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quit = SIGHUP; |
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} |
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break; |
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case IMSG_WRITE_RESOLV_CONF: |
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priv_write_resolv_conf(&imsg); |
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break; |
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case IMSG_WRITE_OPTION_DB: |
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priv_write_option_db(&imsg); |
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break; |
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default: |
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warning("received unknown message, code %u", |
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imsg.hdr.type); |
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} |
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imsg_free(&imsg); |
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} |
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} |