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Merge branch 'master' into feature-ipv6-support

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@ -0,0 +1,339 @@
GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
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Foundation's software and to any other program whose authors commit to
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TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
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This section is intended to make thoroughly clear what is believed to
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certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
may add an explicit geographical distribution limitation excluding
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NO WARRANTY
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FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
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WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
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YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
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POSSIBILITY OF SUCH DAMAGES.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License.

2
Makefile.am
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@ -3,7 +3,7 @@ AUTOMAKE_OPTIONS = foreign dist-bzip2
SUBDIRS = src
EXTRA_DIST = bootstrap CHANGES.md README.md index.html \
EXTRA_DIST = bootstrap COPYING CHANGES.md README.md index.html \
$(man_MANS) $(sysconf_DATA)
man_MANS = rinetd.8

584
src/parse.c
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19
src/parse.peg
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@ -1,6 +1,6 @@
# Copyright © 1997—1999 Thomas Boutell <boutell@boutell.com>
# and Boutell.Com, Inc.
# © 2003—2017 Sam Hocevar <sam@hocevar.net>
# © 2003—2021 Sam Hocevar <sam@hocevar.net>
#
# This software is released for free use under the terms of
# the GNU Public License, version 2 or higher. NO WARRANTY
@ -22,8 +22,9 @@
int currentLine; \
int isAuthAllow; \
char *tmpPort; \
int tmpPortNum, tmpProto; \
int bindPortNum, bindProto, connectPortNum, connectProto; \
uint16_t tmpPortNum, tmpProto; \
uint16_t bindPortNum, connectPortNum; \
int bindProto, connectProto; \
int serverTimeout; \
char *bindAddress, *connectAddress, *sourceAddress;
#define YY_INPUT(yyctx, buf, result, max_size) \
@ -73,11 +74,12 @@ full-port = port proto
{
char const *proto = yy->tmpProto == protoTcp ? "tcp" : "udp";
struct servent *service = getservbyname(yy->tmpPort, proto);
yy->tmpPortNum = service ? ntohs(service->s_port) : atoi(yy->tmpPort);
if (yy->tmpPortNum == 0 || yy->tmpPortNum >= 65536) {
int port = service ? ntohs(service->s_port) : atoi(yy->tmpPort);
if (port <= 0 || port >= 65536) {
syslog(LOG_ERR, "port %s/%s missing or out of range\n", yy->tmpPort, proto);
PARSE_ERROR;
}
yy->tmpPortNum = (uint16_t)port;
}
port = < (number | service) > { yy->tmpPort = strdup(yytext); }
@ -145,12 +147,13 @@ number = digit+
ipv4 = number '.' number '.' number '.' number | '0'
ipv6 = (hexdigit | ':')+ | '[' ipv6 ']'
hostname = ([-0-9a-zA-Z_]+ '.')* [a-zA-Z][-0-9a-zA-Z_]* '.'?
hostname = (label '.')* name '.'?
name = [a-zA-Z][a-zA-Z0-9_]*
name = [a-zA-Z_] [-a-zA-Z0-9_]*
label = [0-9]* name
filename = '"' [^"]+ '"'
| [^ \t\r\n]+
| [^ \t\r\n]+
- = [ \t]+
digit = [0-9]

72
src/rinetd.c
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@ -1,6 +1,6 @@
/* Copyright © 1997—1999 Thomas Boutell <boutell@boutell.com>
and Boutell.Com, Inc.
© 2003—2017 Sam Hocevar <sam@hocevar.net>
© 2003—2019 Sam Hocevar <sam@hocevar.net>
This software is released for free use under the terms of
the GNU Public License, version 2 or higher. NO WARRANTY
@ -248,8 +248,8 @@ static void readConfiguration(char const *file) {
}
}
void addServer(char *bindAddress, int bindPort, int bindProto,
char *connectAddress, int connectPort, int connectProto,
void addServer(char *bindAddress, uint16_t bindPort, protocolType bindProto,
char *connectAddress, uint16_t connectPort, protocolType connectProto,
int serverTimeout, char *sourceAddress)
{
/* Turn all of this stuff into reasonable addresses */
@ -287,7 +287,7 @@ void addServer(char *bindAddress, int bindPort, int bindProto,
/* Warn -- don't exit. */
syslog(LOG_ERR, "couldn't bind to "
"address %s port %d (%m)\n",
bindAddress, bindPort);
bindAddress, (int)bindPort);
closesocket(fd);
exit(1);
}
@ -297,7 +297,7 @@ void addServer(char *bindAddress, int bindPort, int bindProto,
/* Warn -- don't exit. */
syslog(LOG_ERR, "couldn't listen to "
"address %s port %d (%m)\n",
bindAddress, bindPort);
bindAddress, (int)bindPort);
closesocket(fd);
}
@ -530,8 +530,8 @@ static void handleRead(ConnectionInfo *cnx, Socket *socket, Socket *other_socket
if (RINETD_BUFFER_SIZE == socket->recvPos) {
return;
}
int got = recv(socket->fd, socket->buffer + socket->recvPos,
RINETD_BUFFER_SIZE - socket->recvPos, 0);
int wanted = RINETD_BUFFER_SIZE - socket->recvPos;
int got = recv(socket->fd, socket->buffer + socket->recvPos, wanted, 0);
if (got < 0) {
if (GetLastError() == WSAEWOULDBLOCK) {
return;
@ -545,7 +545,7 @@ static void handleRead(ConnectionInfo *cnx, Socket *socket, Socket *other_socket
handleClose(cnx, socket, other_socket);
return;
}
socket->recvBytes += got;
socket->totalBytesIn += got;
socket->recvPos += got;
}
@ -556,7 +556,7 @@ static void handleUdpRead(ConnectionInfo *cnx, char const *buffer, int bytes)
? bytes : RINETD_BUFFER_SIZE - socket->recvPos;
if (got > 0) {
memcpy(socket->buffer + socket->recvPos, buffer, got);
socket->recvBytes += got;
socket->totalBytesIn += got;
socket->recvPos += got;
}
}
@ -579,9 +579,9 @@ static void handleWrite(ConnectionInfo *cnx, Socket *socket, Socket *other_socke
addrlen = (SOCKLEN_T)sizeof(cnx->remoteAddress);
}
int wanted = other_socket->recvPos - socket->sentPos;
int got = sendto(socket->fd, other_socket->buffer + socket->sentPos,
other_socket->recvPos - socket->sentPos, 0,
addr, addrlen);
wanted, 0, addr, addrlen);
if (got < 0) {
if (GetLastError() == WSAEWOULDBLOCK) {
return;
@ -593,8 +593,8 @@ static void handleWrite(ConnectionInfo *cnx, Socket *socket, Socket *other_socke
return;
}
socket->sentPos += got;
socket->sentBytes += got;
if (socket->sentPos == other_socket->recvPos) {
socket->totalBytesOut += got;
if (got == wanted) {
socket->sentPos = other_socket->recvPos = 0;
}
}
@ -645,7 +645,7 @@ static void handleAccept(ServerInfo const *srv)
/* In TCP mode, get remote address using accept(). */
nfd = accept(srv->fd, &addr, &addrlen);
if (nfd == INVALID_SOCKET) {
syslog(LOG_ERR, "accept(%d): %m\n", srv->fd);
syslog(LOG_ERR, "accept(%llu): %m\n", (long long unsigned int)srv->fd);
logEvent(NULL, srv, logAcceptFailed);
return;
}
@ -666,7 +666,7 @@ static void handleAccept(ServerInfo const *srv)
if (GetLastError() == WSAEINPROGRESS) {
return;
}
syslog(LOG_ERR, "recvfrom(%d): %m\n", srv->fd);
syslog(LOG_ERR, "recvfrom(%llu): %m\n", (long long unsigned int)srv->fd);
logEvent(NULL, srv, logAcceptFailed);
return;
}
@ -695,12 +695,12 @@ static void handleAccept(ServerInfo const *srv)
cnx->local.fd = INVALID_SOCKET;
cnx->local.proto = srv->toProto;
cnx->local.recvPos = cnx->local.sentPos = 0;
cnx->local.recvBytes = cnx->local.sentBytes = 0;
cnx->local.totalBytesIn = cnx->local.totalBytesOut = 0;
cnx->remote.fd = nfd;
cnx->remote.proto = srv->fromProto;
cnx->remote.recvPos = cnx->remote.sentPos = 0;
cnx->remote.recvBytes = cnx->remote.sentBytes = 0;
cnx->remote.totalBytesIn = cnx->remote.totalBytesOut = 0;
cnx->remoteAddress = *(struct sockaddr_in *)&addr;
if (srv->fromProto == protoUdp)
cnx->remoteTimeout = time(NULL) + srv->serverTimeout;
@ -774,7 +774,8 @@ static void handleAccept(ServerInfo const *srv)
/* Send a zero-size UDP packet to simulate a connection */
if (srv->toProto == protoUdp) {
int got = sendto(cnx->local.fd, NULL, 0, 0,
&saddr, (SOCKLEN_T)sizeof(saddr));
(struct sockaddr const *)&saddr,
(SOCKLEN_T)sizeof(saddr));
/* FIXME: we ignore errors here... is it safe? */
(void)got;
}
@ -983,18 +984,15 @@ static void logEvent(ConnectionInfo const *cnx, ServerInfo const *srv, int resul
strftime(tstr, sizeof(tstr), "%d/%b/%Y:%H:%M:%S ", t);
char const *addressText = "?";
int bytesOutput = 0;
int bytesInput = 0;
int64_t bytesOut = 0, bytesIn = 0;
if (cnx != NULL) {
addressText = inet_ntoa(cnx->remoteAddress.sin_addr);
bytesOutput = cnx->remote.sentBytes;
bytesInput = cnx->remote.recvBytes;
bytesOut = cnx->remote.totalBytesOut;
bytesIn = cnx->remote.totalBytesIn;
}
char const *fromHost = "?";
int fromPort = 0;
char const *toHost = "?";
int toPort = 0;
char const *fromHost = "?", *toHost = "?";
uint16_t fromPort = 0, toPort = 0;
if (srv != NULL) {
fromHost = srv->fromHost;
fromPort = srv->fromPort;
@ -1023,28 +1021,28 @@ static void logEvent(ConnectionInfo const *cnx, ServerInfo const *srv, int resul
fprintf(logFile, "%s - - "
"[%s %c%.2d%.2d] "
"\"GET /rinetd-services/%s/%d/%s/%d/%s HTTP/1.0\" "
"200 %d - - - %d\n",
"200 %llu - - - %llu\n",
addressText,
tstr,
sign,
timz / 60,
timz % 60,
fromHost, fromPort,
toHost, toPort,
fromHost, (int)fromPort,
toHost, (int)toPort,
logMessages[result],
bytesOutput,
bytesInput);
(unsigned long long int)bytesOut,
(unsigned long long int)bytesIn);
} else {
/* Write an rinetd-specific log entry with a
less goofy format. */
fprintf(logFile, "%s\t%s\t%s\t%d\t%s\t%d\t%d"
"\t%d\t%s\n",
fprintf(logFile, "%s\t%s\t%s\t%d\t%s\t%d\t%llu"
"\t%llu\t%s\n",
tstr,
addressText,
fromHost, fromPort,
toHost, toPort,
bytesInput,
bytesOutput,
fromHost, (int)fromPort,
toHost, (int)toPort,
(unsigned long long int)bytesIn,
(unsigned long long int)bytesOut,
logMessages[result]);
}
}

8
src/rinetd.h
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@ -1,6 +1,6 @@
/* Copyright © 1997—1999 Thomas Boutell <boutell@boutell.com>
and Boutell.Com, Inc.
© 2003—2017 Sam Hocevar <sam@hocevar.net>
© 2003—2019 Sam Hocevar <sam@hocevar.net>
This software is released for free use under the terms of
the GNU Public License, version 2 or higher. NO WARRANTY
@ -19,6 +19,8 @@
# include <syslog.h>
#endif /* _WIN32 */
#include <stdint.h>
/* Constants */
static int const RINETD_BUFFER_SIZE = 16384;
@ -44,7 +46,7 @@ extern FILE *logFile;
/* Functions */
void addServer(char *bindAddress, int bindPort, int bindProto,
char *connectAddress, int connectPort, int connectProto,
void addServer(char *bindAddress, uint16_t bindPort, protocolType bindProto,
char *connectAddress, uint16_t connectPort, protocolType connectProto,
int serverTimeout, char *sourceAddress);

22
src/types.h
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@ -1,6 +1,6 @@
/* Copyright © 1997—1999 Thomas Boutell <boutell@boutell.com>
and Boutell.Com, Inc.
© 2003—2017 Sam Hocevar <sam@hocevar.net>
© 2003—2019 Sam Hocevar <sam@hocevar.net>
This software is released for free use under the terms of
the GNU Public License, version 2 or higher. NO WARRANTY
@ -9,13 +9,16 @@
#pragma once
#include <time.h>
#include <stdint.h>
enum ruleType {
typedef enum _rule_type ruleType;
enum _rule_type {
allowRule,
denyRule,
};
enum protocolType {
typedef enum _protocol_type protocolType;
enum _protocol_type {
protoTcp = 1,
protoUdp = 2,
};
@ -24,7 +27,7 @@ typedef struct _rule Rule;
struct _rule
{
char *pattern;
int type;
ruleType type;
};
typedef struct _server_info ServerInfo;
@ -33,12 +36,13 @@ struct _server_info {
/* In network order, for network purposes */
struct in_addr localAddr;
unsigned short localPort;
uint16_t localPort;
struct in_addr sourceAddr;
/* In ASCII and local byte order, for logging purposes */
char *fromHost, *toHost;
int fromPort, fromProto, toPort, toProto;
int16_t fromPort, toPort;
protocolType fromProto, toProto;
/* Offset and count into list of allow and deny rules. Any rules
prior to globalAllowRules and globalDenyRules are global rules. */
@ -52,11 +56,11 @@ typedef struct _socket Socket;
struct _socket
{
SOCKET fd;
int proto;
protocolType proto;
/* recv: received on this socket
sent: sent to this socket from the other buffer */
sent: sent through this socket from the other buffer */
int recvPos, sentPos;
int recvBytes, sentBytes;
uint64_t totalBytesIn, totalBytesOut;
char *buffer;
};