mirror of
https://github.com/troglobit/finit.git
synced 2026-10-07 00:00:23 +07:00
Joachim Nilsson
03573b41ca
This patch changes the syntax for custom inetd services and adds support
for deny filters. The new syntax is:
inetd service/proto[@iface,!iface,...] </path/to/cmd | internal[.service]>
This means the second column now defines what@from and the third to/what
process. For internal services on a custom port the internal.service
syntax must be specified, so Finit can properly bind the inetd service
to the correct plugin. Here follows a few examples:
inetd time/udp wait [2345] internal -- UNIX rdate service
inetd time/tcp nowait [2345] internal -- UNIX rdate service
inetd 3737/tcp nowait [2345] internal.time -- UNIX rdate service
inetd telnet/tcp@*,!eth1,!eth0, nowait [2345] /sbin/telnetd -i -F -- Telnet service
inetd 2323/tcp@eth1,eth2,eth0 nowait [2345] /sbin/telnetd -i -F -- Telnet service
inetd 222/tcp@eth0 nowait [2345] /sbin/dropbear -i -R -F -- SSH service
inetd ssh/tcp@*,!eth0 nowait [2345] /sbin/dropbear -i -R -F -- SSH service
Access to telnet on port `2323` is only possible from interfaces `eth0`,
`eth1` and `eth2`. The standard telnet port (`23`) is available from
all other interfaces, but also `eth2`. The `*` notation used in the ssh
stanza means *any* interface, however, here `eth0` is not allowed.
NOTE: This patch breaks syntax compatibility with Finit v1.12!
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
82 lines
2.6 KiB
C
82 lines
2.6 KiB
C
/* Classic inetd services launcher for Finit
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*
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* Copyright (c) 2015 Joachim Nilsson <troglobit@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef FINIT_INETD_H_
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#define FINIT_INETD_H_
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#include <netdb.h>
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#include <net/if.h>
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#include "queue.h"
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#include "libuev/uev.h"
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typedef struct inetd_filter {
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LIST_ENTRY(inetd_filter) link;
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int deny; /* 0:allow, 1:deny */
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char ifname[IFNAMSIZ]; /* E.g., eth0 */
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} inetd_filter_t;
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typedef struct {
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uev_t watcher;
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void *arg; /* svc_t pointer for the socket callback */
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int type; /* Socket type: SOCK_STREAM/SOCK_DGRAM */
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int std; /* Standard proto/port from /etc/services */
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int proto;
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int port;
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int forking;
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char name[10];
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int (*cmd)(int type); /* internal inetd service, like 'time' */
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LIST_HEAD(, inetd_filter) filters;
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} inetd_t;
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int inetd_dgram_peek (int sd, char *ifname);
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int inetd_stream_peek (int sd, char *ifname);
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void inetd_start (inetd_t *inetd);
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void inetd_stop (inetd_t *inetd);
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int inetd_respawn (pid_t pid);
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int inetd_new (inetd_t *inetd, char *service, char *proto, int forking, void *arg);
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int inetd_del (inetd_t *inetd);
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int inetd_match (inetd_t *inetd, char *service, char *proto);
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int inetd_filter_str (inetd_t *inetd, char *str, size_t len);
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int inetd_allow (inetd_t *inetd, char *ifname);
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int inetd_deny (inetd_t *inetd, char *ifname);
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int inetd_is_allowed (inetd_t *inetd, char *ifname);
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#endif /* FINIT_INETD_H_ */
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/**
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* Local Variables:
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* version-control: t
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* indent-tabs-mode: t
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* c-file-style: "linux"
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* End:
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*/
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