From cef04da3c24cdcf1c1ffeb214c74f6ef0aaaa0ad Mon Sep 17 00:00:00 2001 From: Christian Pointner Date: Tue, 15 Feb 2011 11:00:00 +0000 Subject: added initial version diff --git a/AUTHORS b/AUTHORS new file mode 100644 index 0000000..980ce2f --- /dev/null +++ b/AUTHORS @@ -0,0 +1 @@ +Christian Pointner diff --git a/ChangeLog b/ChangeLog new file mode 100644 index 0000000..9ff7a96 --- /dev/null +++ b/ChangeLog @@ -0,0 +1,4 @@ +2011.??.?? -- Version 0.1 + +* initial release + diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..f7003f7 --- /dev/null +++ b/LICENSE @@ -0,0 +1,700 @@ +/* + * rharchive + * + * rharchive is a simple tcp connection proxy which combines the + * features of rinetd and 6tunnel. rharchive supports IPv4 and + * IPv6 and also supports connections from IPv6 to IPv4 + * endpoints and vice versa. + * + * + * Copyright (C) 2010-2011 Christian Pointner + * + * This file is part of rharchive. + * + * rharchive 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 3 of the License, or + * any later version. + * + * rharchive 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 rharchive. If not, see . + */ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +the GNU General Public License is intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program 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, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU 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. But first, please read +. diff --git a/README b/README new file mode 100644 index 0000000..f8c2930 --- /dev/null +++ b/README @@ -0,0 +1,50 @@ +Introduction +============ + +rharchive is small program based on gstreamer. It converts +a raw audio stream into flac or ogg and writes files for every +hour. + +Dependencies +============ + +Linux +----- + +core: + build-essential + +if you want to rebuild the manpage: + asciidoc + + +Installation +============ + +Getting the source via subversion: +---------------------------------- + +svn co https://svn.helsinki.at/rharchive/trunk rharchive +cd rharchive + + +Building from source +-------------------- + +# cd src +# ./configure +# make + + +Installing +---------- + +# sudo make install + +This will install rharchive under the --prefix defined with configure. + + +Uninstalling +------------ + +# sudo make remove diff --git a/doc/Makefile b/doc/Makefile new file mode 100644 index 0000000..4d559d0 --- /dev/null +++ b/doc/Makefile @@ -0,0 +1,47 @@ +## +## rharchive +## +## rharchive is a simple tcp connection proxy which combines the +## features of rinetd and 6tunnel. rharchive supports IPv4 and +## IPv6 and also supports connections from IPv6 to IPv4 +## endpoints and vice versa. +## +## +## Copyright (C) 2010-2011 Christian Pointner +## +## This file is part of rharchive. +## +## rharchive 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 3 of the License, or +## any later version. +## +## rharchive 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 rharchive. If not, see . +## + +VERSION=$(shell cat ../version) + +.PHONY: clean + +all: manpage + +rharchive.8: rharchive.8.txt + a2x -f manpage $< + @ sed -i -e 's/\[FIXME: source\]/rharchive ${VERSION}/' $@ + @ sed -i -e 's/\[FIXME: manual\]/rharchive user manual/' $@ + @ sed -i -e 's/^rharchive$$/\\fBrharchive\\fR/' $@ + @ sed -i -e 's/^ \[ \([^ ]*\)/ [ \\fB\1\\fR/' $@ + +manpage: rharchive.8 + +clean: + rm -f rharchive.8.xml + +realclean: clean + rm -f rharchive.8 diff --git a/doc/rharchive.8 b/doc/rharchive.8 new file mode 100644 index 0000000..845f17a --- /dev/null +++ b/doc/rharchive.8 @@ -0,0 +1,126 @@ +'\" t +.\" Title: rharchive +.\" Author: [see the "AUTHORS" section] +.\" Generator: DocBook XSL Stylesheets v1.75.1 +.\" Date: 02/15/2011 +.\" Manual: rharchive user manual +.\" Source: rharchive trunk +.\" Language: English +.\" +.TH "RHARCHIVE" "8" "02/15/2011" "rharchive trunk" "rharchive user manual" +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +rharchive \- Radio Helsinki Archive Daemon +.SH "SYNOPSIS" +.sp +.nf +\fBrharchive\fR + [ \fB\-h|\-\-help\fR ] + [ \fB\-D|\-\-nodaemonize\fR ] + [ \fB\-u|\-\-username\fR ] + [ \fB\-g|\-\-groupname\fR ] + [ \fB\-C|\-\-chroot\fR ] + [ \fB\-P|\-\-write\-pid\fR ] + [ \fB\-L|\-\-log\fR :[,[,[\&.\&.]]] ] + [ \fB\-U|\-\-debug\fR ] +.fi +.SH "DESCRIPTION" +.sp +\fBrharchive\fR rharchive is small program based on gstreamer\&. It converts a raw audio stream into flac or ogg and writes files for every hour\&. +.SH "OPTIONS" +.sp +The following options can be passed to the \fBrharchive\fR daemon: +.PP +\fB\-D, \-\-nodaemonize\fR +.RS 4 +This option instructs +\fBrharchive\fR +to run in foreground instead of becoming a daemon which is the default\&. +.RE +.PP +\fB\-u, \-\-username \fR +.RS 4 +run as this user\&. If no group is specified (\fB\-g\fR) the default group of the user is used\&. The default is to not drop privileges\&. +.RE +.PP +\fB\-g, \-\-groupname \fR +.RS 4 +run as this group\&. If no username is specified (\fB\-u\fR) this gets ignored\&. The default is to not drop privileges\&. +.RE +.PP +\fB\-C, \-\-chroot \fR +.RS 4 +Instruct +\fBrharchive\fR +to run in a chroot jail\&. The default is to not run in chroot\&. +.RE +.PP +\fB\-P, \-\-write\-pid \fR +.RS 4 +Instruct +\fBrharchive\fR +to write it\(cqs pid to this file\&. The default is to not create a pid file\&. +.RE +.PP +\fB\-L, \-\-log :[,[,[\&.\&.]]]\fR +.RS 4 +add log target to logging system\&. This can be invoked several times in order to log to different targets at the same time\&. Every target has its own log level which is a number between 0 and 5\&. Where 0 means disabling log and 5 means debug messages are enabled\&. + +The file target can be used more than once with different levels\&. If no target is provided at the command line a single target with the config +\fBsyslog:3,rharchive,daemon\fR +is added\&. + +The following targets are supported: +.PP +\fBsyslog\fR +.RS 4 +log to syslog daemon, parameters [,[,]] +.RE +.PP +\fBfile\fR +.RS 4 +log to file, parameters [,] +.RE +.PP +\fBstdout\fR +.RS 4 +log to standard output, parameters +.RE +.PP +\fBstderr\fR +.RS 4 +log to standard error, parameters +.RE +.RE +.PP +\fB\-U, \-\-debug\fR +.RS 4 +This option instructs +\fBrharchive\fR +to run in debug mode\&. It implicits +\fB\-D\fR +(don\(cqt daemonize) and adds a log target with the configuration +\fBstdout:5\fR +(logging with maximum level)\&. In future releases there might be additional output when this option is supplied\&. +.RE +.SH "BUGS" +.sp +Most likely there are some bugs in \fBrharchive\fR\&. If you find a bug, please let the developers know at equinox@helsinki\&.at\&. Of course, patches are preferred\&. +.SH "AUTHORS" +.sp +Christian Pointner +.SH "RESOURCES" +.sp +Radio Helsinki Website: http://www\&.helsinki\&.at +.SH "COPYING" +.sp +Copyright (C) 2011 Christian Pointner\&. 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 3 of the License, or any later version\&. diff --git a/doc/rharchive.8.txt b/doc/rharchive.8.txt new file mode 100644 index 0000000..9da537c --- /dev/null +++ b/doc/rharchive.8.txt @@ -0,0 +1,105 @@ +rharchive(8) +============ + +NAME +---- + +rharchive - Radio Helsinki Archive Daemon + + +SYNOPSIS +-------- + +.... +rharchive + [ -h|--help ] + [ -D|--nodaemonize ] + [ -u|--username ] + [ -g|--groupname ] + [ -C|--chroot ] + [ -P|--write-pid ] + [ -L|--log :[,[,[..]]] ] + [ -U|--debug ] +.... + + +DESCRIPTION +----------- + +*rharchive* rharchive is small program based on gstreamer. It converts +a raw audio stream into flac or ogg and writes files for every +hour. + +OPTIONS +------- + +The following options can be passed to the *rharchive* daemon: + +*-D, --nodaemonize*:: + This option instructs *rharchive* to run in foreground + instead of becoming a daemon which is the default. + +*-u, --username *:: + run as this user. If no group is specified (*-g*) the default group of + the user is used. The default is to not drop privileges. + +*-g, --groupname *:: + run as this group. If no username is specified (*-u*) this gets ignored. + The default is to not drop privileges. + +*-C, --chroot *:: + Instruct *rharchive* to run in a chroot jail. The default is + to not run in chroot. + +*-P, --write-pid *:: + Instruct *rharchive* to write it's pid to this file. The default is + to not create a pid file. + +*-L, --log :[,[,[..]]]*:: + add log target to logging system. This can be invoked several times + in order to log to different targets at the same time. Every target + has its own log level which is a number between 0 and 5. Where 0 means + disabling log and 5 means debug messages are enabled. + + The file target can be used more than once with different levels. + If no target is provided at the command line a single target with the + config *syslog:3,rharchive,daemon* is added. + + The following targets are supported: + + *syslog*;; log to syslog daemon, parameters [,[,]] + *file*;; log to file, parameters [,] + *stdout*;; log to standard output, parameters + *stderr*;; log to standard error, parameters + +*-U, --debug*:: + This option instructs *rharchive* to run in debug mode. It implicits *-D* + (don't daemonize) and adds a log target with the configuration + *stdout:5* (logging with maximum level). In future releases there might + be additional output when this option is supplied. + + + +BUGS +---- +Most likely there are some bugs in *rharchive*. If you find a bug, please let +the developers know at equinox@helsinki.at. Of course, patches are preferred. + + +AUTHORS +------- + +Christian Pointner + + +RESOURCES +--------- + +Radio Helsinki Website: http://www.helsinki.at + + +COPYING +------- + +Copyright \(C) 2011 Christian Pointner. 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 3 of the License, or any later version. diff --git a/src/Makefile b/src/Makefile new file mode 100644 index 0000000..80c312a --- /dev/null +++ b/src/Makefile @@ -0,0 +1,150 @@ +## +## rharchive +## +## rharchive is a simple tcp connection proxy which combines the +## features of rinetd and 6tunnel. rharchive supports IPv4 and +## IPv6 and also supports connections from IPv6 to IPv4 +## endpoints and vice versa. +## +## +## Copyright (C) 2010-2011 Christian Pointner +## +## This file is part of rharchive. +## +## rharchive 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 3 of the License, or +## any later version. +## +## rharchive 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 rharchive. If not, see . +## + +ifneq ($(MAKECMDGOALS),distclean) +include include.mk +endif + +EXECUTABLE := rharchive + +C_OBJS := log.o \ + options.o \ + slist.o \ + string_list.o \ + sig_handler.o \ + rharchive.o + +C_SRCS := $(C_OBJS:%.o=%.c) + +.PHONY: clean cleanall distclean manpage install install-bin install-etc install-man uninstall remove purge + +all: $(EXECUTABLE) + +cfg_parser.c: cfg_parser.rl + $(RAGEL) -C -G2 -o $@ $< + +cfg_parser.dot: cfg_parser.rl + $(RAGEL) -V -p -o $@ $< + +cfg_parser.png: cfg_parser.dot + @dot -Tpng $< > $@ + +%.d: %.c + @set -e; rm -f $@; \ + $(CC) -MM $(CFLAGS) $< > $@.$$$$; \ + sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \ + rm -f $@.$$$$; echo '(re)building $@' + +ifneq ($(MAKECMDGOALS),distclean) +-include $(C_SRCS:%.c=%.d) +endif + +$(EXECUTABLE): $(C_OBJS) + $(CC) $(C_OBJS) -o $@ $(LDFLAGS) + +%.o: %.c + $(CC) $(CFLAGS) -c $< + +strip: $(EXECUTABLE) + $(STRIP) -s $(EXECUTABLE) + + +distclean: cleanall + find . -name *.o -exec rm -f {} \; + find . -name "*.\~*" -exec rm -rf {} \; + rm -f include.mk + rm -f config.h + +clean: + rm -f *.o + rm -f *.d + rm -f *.d.* + rm -f cfg_parser.c + rm -f cfg_parser.png cfg_parser.dot + rm -f $(EXECUTABLE) + +cleanall: clean + $(MAKE) --directory="../doc/" clean + +manpage: + $(MAKE) --directory="../doc/" manpage + + +INSTALL_TARGETS := install-bin install-etc +REMOVE_TARGETS := remove-bin remove-etc + +ifdef MANDIR +INSTALL_TARGETS += install-man +REMOVE_TARGETS += remove-man +endif + +ifdef EXAMPLESDIR +INSTALL_TARGETS += install-examples +REMOVE_TARGETS += remove-examples +endif + +install: all $(INSTALL_TARGETS) + +install-bin: $(EXECUTABLE) + $(INSTALL) -d $(DESTDIR)$(BINDIR) + $(INSTALL) -m 755 $(EXECUTABLE) $(DESTDIR)$(BINDIR) + +install-etc: + $(INSTALL) -d $(DESTDIR)$(ETCDIR)/init.d/ + $(INSTALL) -m 755 ../contrib/initscript $(DESTDIR)$(ETCDIR)/init.d/$(EXECUTABLE) + $(INSTALL) -d $(DESTDIR)$(ETCDIR)/default/ + $(INSTALL) -m 644 ../contrib/default $(DESTDIR)$(ETCDIR)/default/$(EXECUTABLE) + @ echo "# $(EXECUTABLE) configuration file" > $(DESTDIR)$(ETCDIR)/$(EXECUTABLE).conf + @ echo "# example configurations can be found at $(EXAMPLESDIR)/$(EXECUTABLE)" >> $(DESTDIR)$(ETCDIR)/$(EXECUTABLE).conf + +install-examples: + $(INSTALL) -d $(DESTDIR)$(EXAMPLESDIR)/$(EXECUTABLE) + $(INSTALL) -m 644 ../contrib/example.conf $(DESTDIR)$(EXAMPLESDIR)/$(EXECUTABLE)/ + +install-man: manpage + $(INSTALL) -d $(DESTDIR)$(MANDIR)/man8/ + $(INSTALL) -m 644 ../doc/rharchive.8 $(DESTDIR)$(MANDIR)/man8/$(EXECUTABLE).8 + +uninstall: remove + +remove: $(REMOVE_TARGETS) + +remove-bin: + rm -f $(DESTDIR)$(BINDIR)/$(EXECUTABLE) + +remove-etc: + rm -f $(DESTDIR)$(ETCDIR)/init.d/$(EXECUTABLE) + +remove-examples: + rm -rf $(DESTDIR)$(EXAMPLESDIR)/$(EXECUTABLE)/ + +remove-man: + rm -f $(DESTDIR)$(MANDIR)/man8/$(EXECUTABLE).8 + +purge: remove + rm -f $(DESTDIR)$(ETCDIR)/$(EXECUTABLE).conf + rm -f $(DESTDIR)$(ETCDIR)/default/$(EXECUTABLE) diff --git a/src/configure b/src/configure new file mode 100755 index 0000000..6aee62a --- /dev/null +++ b/src/configure @@ -0,0 +1,180 @@ +#!/bin/sh +# +# rharchive +# +# rharchive is a simple tcp connection proxy which combines the +# features of rinetd and 6tunnel. rharchive supports IPv4 and +# IPv6 and also supports connections from IPv6 to IPv4 +# endpoints and vice versa. +# +# +# Copyright (C) 2010-2011 Christian Pointner +# +# This file is part of rharchive. +# +# rharchive 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 3 of the License, or +# any later version. +# +# rharchive 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 rharchive. If not, see . +# + +TARGET=`uname -s` +EBUILD_COMPAT=0 + +CFLAGS='-g -O2' +LDFLAGS='-g -Wall -O2' + +PREFIX='/usr/local' +BINDIR='' +ETCDIR='' +MANDIR='' +INSTALLMANPAGE=1 + +print_usage() { + echo "configure --help print this" + echo " --target= build target i.e. Linux (default: autodetect)" + echo " --prefix= the installation prefix (default: /usr/local)" + echo " --bindir= the path to the bin directory (default: $PREFIX/bin)" + echo " --sysconfdir= the path to the system configuration directory (default: $PREFIX/etc" + echo " --mandir= the path to the system man pages (default: $PREFIX/share/man)" + echo " --no-manpage dont't install manpage" +} + +for arg +do + case $arg in + --target=*) + TARGET=${arg#--target=} + ;; + --prefix=*) + PREFIX=${arg#--prefix=} + ;; + --bindir=*) + BINDIR=${arg#--bindir=} + ;; + --sysconfdir=*) + ETCDIR=${arg#--sysconfdir=} + ;; + --mandir=*) + MANDIR=${arg#--mandir=} + ;; + --no-manpage) + INSTALLMANPAGE=0 + ;; + --ebuild-compat) + EBUILD_COMPAT=1 + ;; + --help) + print_usage + exit 0 + ;; + *) + ERRORS="$ERRORS $arg" + ;; + esac +done + +if [ -n "$ERRORS" ] && [ $EBUILD_COMPAT -ne 1 ]; then + for error in $ERRORS; do + echo "Unknown argument: $error" + done + + print_usage + exit 1 +fi + +rm -f version.h +rm -f include.mk +case $TARGET in + Linux) + ;; + OpenBSD|FreeBSD|NetBSD|GNU/kFreeBSD) + CFLAGS=$CFLAGS' -I/usr/local/include' + LDFLAGS=$LDFLAGS' -L/usr/local/lib' + ;; + *) + echo "platform not supported" + exit 1; + ;; +esac + +if [ -z "$BINDIR" ]; then + BINDIR=$PREFIX/bin +fi + +if [ -z "$ETCDIR" ]; then + ETCDIR=$PREFIX/etc +fi + +if [ -z "$MANDIR" ]; then + MANDIR=$PREFIX/share/man +fi + +cat >> include.mk <> include.mk + echo "installing manpage" +else + echo "not installing manpage" +fi + +VERSION=`cat ../version` +if which svn >/dev/null; then + SVN_REV=`svn info 2> /dev/null | grep "^Revision: " | awk '{print($2)}'` + if [ -n "$SVN_REV" ]; then + VERSION="$VERSION (svn$SVN_REV)" + fi +fi + +HOSTNAME=`hostname` +DATE=`date +"%d.%m.%Y %H:%M:%S %Z"` + +cat >> config.h < + * + * This file is part of rharchive. + * + * rharchive 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 3 of the License, or + * any later version. + * + * rharchive 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 rharchive. If not, see . + */ + +#ifndef RHARCHIVE_daemon_h_INCLUDED +#define RHARCHIVE_daemon_h_INCLUDED + +#include +#include +#include +#include +#include +#include +#include + +struct priv_info_struct { + struct passwd* pw_; + struct group* gr_; +}; +typedef struct priv_info_struct priv_info_t; + +int priv_init(priv_info_t* priv, const char* username, const char* groupname) +{ + if(!priv) + return -1; + + priv->pw_ = NULL; + priv->gr_ = NULL; + + priv->pw_ = getpwnam(username); + if(!priv->pw_) { + log_printf(ERROR, "unkown user %s", username); + return -1; + } + + if(groupname) + priv->gr_ = getgrnam(groupname); + else + priv->gr_ = getgrgid(priv->pw_->pw_gid); + + if(!priv->gr_) { + log_printf(ERROR, "unkown group %s", groupname); + return -1; + } + + return 0; +} + +int priv_drop(priv_info_t* priv) +{ + if(!priv || !priv->pw_ || !priv->gr_) { + log_printf(ERROR, "privileges not initialized properly"); + return -1; + } + + if(setgid(priv->gr_->gr_gid)) { + log_printf(ERROR, "setgid('%s') failed: %s", priv->gr_->gr_name, strerror(errno)); + return -1; + } + + gid_t gr_list[1]; + gr_list[0] = priv->gr_->gr_gid; + if(setgroups (1, gr_list)) { + log_printf(ERROR, "setgroups(['%s']) failed: %s", priv->gr_->gr_name, strerror(errno)); + return -1; + } + + if(setuid(priv->pw_->pw_uid)) { + log_printf(ERROR, "setuid('%s') failed: %s", priv->pw_->pw_name, strerror(errno)); + return -1; + } + + log_printf(NOTICE, "dropped privileges to %s:%s", priv->pw_->pw_name, priv->gr_->gr_name); + return 0; +} + + +int do_chroot(const char* chrootdir) +{ + if(getuid() != 0) { + log_printf(ERROR, "this program has to be run as root in order to run in a chroot"); + return -1; + } + + if(chroot(chrootdir)) { + log_printf(ERROR, "can't chroot to %s: %s", chrootdir, strerror(errno)); + return -1; + } + log_printf(NOTICE, "we are in chroot jail (%s) now", chrootdir); + if(chdir("/")) { + log_printf(ERROR, "can't change to /: %s", strerror(errno)); + return -1; + } +} + +void daemonize() +{ + pid_t pid; + + pid = fork(); + if(pid < 0) { + log_printf(ERROR, "daemonizing failed at fork(): %s, exitting", strerror(errno)); + exit(-1); + } + if(pid) exit(0); + + umask(0); + + if(setsid() < 0) { + log_printf(ERROR, "daemonizing failed at setsid(): %s, exitting", strerror(errno)); + exit(-1); + } + + pid = fork(); + if(pid < 0) { + log_printf(ERROR, "daemonizing failed at fork(): %s, exitting", strerror(errno)); + exit(-1); + } + if(pid) exit(0); + + if ((chdir("/")) < 0) { + log_printf(ERROR, "daemonizing failed at chdir(): %s, exitting", strerror(errno)); + exit(-1); + } + + int fd; + for (fd=0;fd<=2;fd++) // close all file descriptors + close(fd); + fd = open("/dev/null",O_RDWR); // stdin + if(fd == -1) + log_printf(WARNING, "can't open stdin (chroot and no link to /dev/null?)"); + else { + if(dup(fd) == -1) // stdout + log_printf(WARNING, "can't open stdout"); + if(dup(fd) == -1) // stderr + log_printf(WARNING, "can't open stderr"); + } + umask(027); +} + +#endif + diff --git a/src/datatypes.h b/src/datatypes.h new file mode 100644 index 0000000..3387d69 --- /dev/null +++ b/src/datatypes.h @@ -0,0 +1,39 @@ +/* + * rharchive + * + * rharchive is a simple tcp connection proxy which combines the + * features of rinetd and 6tunnel. rharchive supports IPv4 and + * IPv6 and also supports connections from IPv6 to IPv4 + * endpoints and vice versa. + * + * + * Copyright (C) 2010-2011 Christian Pointner + * + * This file is part of rharchive. + * + * rharchive 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 3 of the License, or + * any later version. + * + * rharchive 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 rharchive. If not, see . + */ + +#ifndef RHARCHIVE_datatypes_h_INCLUDED +#define RHARCHIVE_datatypes_h_INCLUDED + +#include + +struct buffer_struct { + uint32_t length_; + uint8_t* buf_; +}; +typedef struct buffer_struct buffer_t; + +#endif diff --git a/src/log.c b/src/log.c new file mode 100644 index 0000000..e167c5c --- /dev/null +++ b/src/log.c @@ -0,0 +1,252 @@ +/* + * rharchive + * + * rharchive is a simple tcp connection proxy which combines the + * features of rinetd and 6tunnel. rharchive supports IPv4 and + * IPv6 and also supports connections from IPv6 to IPv4 + * endpoints and vice versa. + * + * + * Copyright (C) 2010-2011 Christian Pointner + * + * This file is part of rharchive. + * + * rharchive 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 3 of the License, or + * any later version. + * + * rharchive 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 rharchive. If not, see . + */ + +#include "datatypes.h" + +#include +#include +#include +#include +#include + +#define SYSLOG_NAMES +#include + +#include "log.h" + +log_t stdlog; + +#include "log_targets.h" + +const char* log_prio_to_string(log_prio_t prio) +{ + switch(prio) { + case ERROR: return "ERROR"; + case WARNING: return "WARNING"; + case NOTICE: return "NOTICE"; + case INFO: return "INFO"; + case DEBUG: return "DEBUG"; + } + return "UNKNOWN"; +} + +log_target_type_t log_target_parse_type(const char* conf) +{ + if(!conf) + return TARGET_UNKNOWN; + + if(!strncmp(conf, "syslog", 6)) return TARGET_SYSLOG; + if(!strncmp(conf, "file", 4)) return TARGET_FILE; + if(!strncmp(conf, "stdout", 6)) return TARGET_STDOUT; + if(!strncmp(conf, "stderr", 6)) return TARGET_STDERR; + + return TARGET_UNKNOWN; +} + +int log_targets_target_exists(log_targets_t* targets, log_target_type_t type) +{ + if(!targets && !targets->first_) + return 0; + + log_target_t* tmp = targets->first_; + while(tmp) { + if(tmp->type_ == type) + return 1; + tmp = tmp->next_; + } + return 0; +} + +int log_targets_add(log_targets_t* targets, const char* conf) +{ + if(!targets) + return -1; + + log_target_t* new_target = NULL; + int duplicates_allowed = 0; + switch(log_target_parse_type(conf)) { + case TARGET_SYSLOG: new_target = log_target_syslog_new(); break; + case TARGET_FILE: new_target = log_target_file_new(); duplicates_allowed = 1; break; + case TARGET_STDOUT: new_target = log_target_stdout_new(); break; + case TARGET_STDERR: new_target = log_target_stderr_new(); break; + default: return -3; + } + if(!new_target) + return -2; + + if(!duplicates_allowed && log_targets_target_exists(targets, new_target->type_)) { + free(new_target); + return -4; + } + + const char* prioptr = strchr(conf, ':'); + if(!prioptr || prioptr[1] == 0) { + free(new_target); + return -1; + } + prioptr++; + if(!isdigit(prioptr[0]) || (prioptr[1] != 0 && prioptr[1] != ',')) { + free(new_target); + return -1; + } + new_target->max_prio_ = prioptr[0] - '0'; + if(new_target->max_prio_ > 0) + new_target->enabled_ = 1; + + if(new_target->init != NULL) { + const char* confptr = NULL; + if(prioptr[1] != 0) + confptr = prioptr+2; + + int ret = (*new_target->init)(new_target, confptr); + if(ret) { + free(new_target); + return ret; + } + } + + if(new_target->open != NULL) + (*new_target->open)(new_target); + + + if(!targets->first_) { + targets->first_ = new_target; + } + else { + log_target_t* tmp = targets->first_; + while(tmp->next_) + tmp = tmp->next_; + + tmp->next_ = new_target; + } + return 0; +} + +void log_targets_log(log_targets_t* targets, log_prio_t prio, const char* msg) +{ + if(!targets) + return; + + log_target_t* tmp = targets->first_; + while(tmp) { + if(tmp->log != NULL && tmp->enabled_ && tmp->max_prio_ >= prio) + (*tmp->log)(tmp, prio, msg); + + tmp = tmp->next_; + } +} + +void log_targets_clear(log_targets_t* targets) +{ + if(!targets) + return; + + while(targets->first_) { + log_target_t* tmp = targets->first_; + targets->first_ = tmp->next_; + if(tmp->close != NULL) + (*tmp->close)(tmp); + if(tmp->clear != NULL) + (*tmp->clear)(tmp); + free(tmp); + } +} + + +void log_init() +{ + stdlog.max_prio_ = 0; + stdlog.targets_.first_ = NULL; +} + +void log_close() +{ + log_targets_clear(&stdlog.targets_); +} + +void update_max_prio() +{ + log_target_t* tmp = stdlog.targets_.first_; + while(tmp) { + if(tmp->enabled_ && tmp->max_prio_ > stdlog.max_prio_) + stdlog.max_prio_ = tmp->max_prio_; + + tmp = tmp->next_; + } +} + +int log_add_target(const char* conf) +{ + if(!conf) + return -1; + + int ret = log_targets_add(&stdlog.targets_, conf); + if(!ret) update_max_prio(); + return ret; +} + +void log_printf(log_prio_t prio, const char* fmt, ...) +{ + if(stdlog.max_prio_ < prio) + return; + + static char msg[MSG_LENGTH_MAX]; + va_list args; + + va_start(args, fmt); + vsnprintf(msg, MSG_LENGTH_MAX, fmt, args); + va_end(args); + + log_targets_log(&stdlog.targets_, prio, msg); +} + +void log_print_hex_dump(log_prio_t prio, const uint8_t* buf, uint32_t len) +{ + if(stdlog.max_prio_ < prio) + return; + + static char msg[MSG_LENGTH_MAX]; + + if(!buf) { + snprintf(msg, MSG_LENGTH_MAX, "(NULL)"); + } + else { + uint32_t i; + int offset = snprintf(msg, MSG_LENGTH_MAX, "dump(%d): ", len); + if(offset < 0) + return; + uint8_t* ptr = &msg[offset]; + + for(i=0; i < len; i++) { + if(((i+1)*3) >= (MSG_LENGTH_MAX - offset)) + break; + snprintf(ptr, 3, "%02X ", buf[i]); + ptr+=3; + } + } + log_targets_log(&stdlog.targets_, prio, msg); +} diff --git a/src/log.h b/src/log.h new file mode 100644 index 0000000..30ae7df --- /dev/null +++ b/src/log.h @@ -0,0 +1,82 @@ +/* + * rharchive + * + * rharchive is a simple tcp connection proxy which combines the + * features of rinetd and 6tunnel. rharchive supports IPv4 and + * IPv6 and also supports connections from IPv6 to IPv4 + * endpoints and vice versa. + * + * + * Copyright (C) 2010-2011 Christian Pointner + * + * This file is part of rharchive. + * + * rharchive 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 3 of the License, or + * any later version. + * + * rharchive 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 rharchive. If not, see . + */ + +#ifndef RHARCHIVE_log_h_INCLUDED +#define RHARCHIVE_log_h_INCLUDED + +#define MSG_LENGTH_MAX 1024 + +enum log_prio_enum { ERROR = 1, WARNING = 2, NOTICE = 3, + INFO = 4, DEBUG = 5 }; +typedef enum log_prio_enum log_prio_t; + +const char* log_prio_to_string(log_prio_t prio); + +enum log_target_type_enum { TARGET_SYSLOG , TARGET_STDOUT, TARGET_STDERR, TARGET_FILE , TARGET_UNKNOWN }; +typedef enum log_target_type_enum log_target_type_t; + +struct log_target_struct { + log_target_type_t type_; + int (*init)(struct log_target_struct* self, const char* conf); + void (*open)(struct log_target_struct* self); + void (*log)(struct log_target_struct* self, log_prio_t prio, const char* msg); + void (*close)(struct log_target_struct* self); + void (*clear)(struct log_target_struct* self); + int opened_; + int enabled_; + log_prio_t max_prio_; + void* param_; + struct log_target_struct* next_; +}; +typedef struct log_target_struct log_target_t; + + +struct log_targets_struct { + log_target_t* first_; +}; +typedef struct log_targets_struct log_targets_t; + +int log_targets_target_exists(log_targets_t* targets, log_target_type_t type); +int log_targets_add(log_targets_t* targets, const char* conf); +void log_targets_log(log_targets_t* targets, log_prio_t prio, const char* msg); +void log_targets_clear(log_targets_t* targets); + + +struct log_struct { + log_prio_t max_prio_; + log_targets_t targets_; +}; +typedef struct log_struct log_t; + +void log_init(); +void log_close(); +void update_max_prio(); +int log_add_target(const char* conf); +void log_printf(log_prio_t prio, const char* fmt, ...); +void log_print_hex_dump(log_prio_t prio, const uint8_t* buf, uint32_t len); + +#endif diff --git a/src/log_targets.h b/src/log_targets.h new file mode 100644 index 0000000..5436021 --- /dev/null +++ b/src/log_targets.h @@ -0,0 +1,356 @@ +/* + * rharchive + * + * rharchive is a simple tcp connection proxy which combines the + * features of rinetd and 6tunnel. rharchive supports IPv4 and + * IPv6 and also supports connections from IPv6 to IPv4 + * endpoints and vice versa. + * + * + * Copyright (C) 2010-2011 Christian Pointner + * + * This file is part of rharchive. + * + * rharchive 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 3 of the License, or + * any later version. + * + * rharchive 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 rharchive. If not, see . + */ + +#ifndef RHARCHIVE_log_targets_h_INCLUDED +#define RHARCHIVE_log_targets_h_INCLUDED + +#include + +static char* get_time_formatted() +{ + char* time_string; + time_t t = time(NULL); + if(t < 0) + time_string = "