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author | Matthias Schiffer <matthias@gamezock.de> | 2008-11-26 22:23:22 +0100 |
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committer | Matthias Schiffer <matthias@gamezock.de> | 2008-11-26 22:23:22 +0100 |
commit | e0de95864892d1e119f91936d8b1294542ab2316 (patch) | |
tree | bea739950464d5dad5bcfe65db456995aec6b6c1 /src/modules | |
parent | 9dd79833cf7db552f9098e90fe188bbf41d9094a (diff) | |
download | mad-e0de95864892d1e119f91936d8b1294542ab2316.tar mad-e0de95864892d1e119f91936d8b1294542ab2316.zip |
SystemBackendPosix ist jetzt ein Modul
Diffstat (limited to 'src/modules')
-rw-r--r-- | src/modules/Makefile.am | 9 | ||||
-rw-r--r-- | src/modules/Makefile.in | 507 | ||||
-rw-r--r-- | src/modules/SystemBackendPosix.cpp | 299 | ||||
-rw-r--r-- | src/modules/SystemBackendPosix.h | 96 |
4 files changed, 911 insertions, 0 deletions
diff --git a/src/modules/Makefile.am b/src/modules/Makefile.am new file mode 100644 index 0000000..d94701f --- /dev/null +++ b/src/modules/Makefile.am @@ -0,0 +1,9 @@ +madlibdir = ${libdir}/mad +moddir = ${madlibdir}/modules + +mod_LTLIBRARIES = SystemBackendPosix.la +SystemBackendPosix_la_SOURCES = SystemBackendPosix.cpp +SystemBackendPosix_la_LIBADD = $(sigc_LIBS) +SystemBackendPosix_la_LDFLAGS = -module -avoid-version -export-dynamic + +noinst_HEADERS = SystemBackendPosix.h diff --git a/src/modules/Makefile.in b/src/modules/Makefile.in new file mode 100644 index 0000000..876828a --- /dev/null +++ b/src/modules/Makefile.in @@ -0,0 +1,507 @@ +# Makefile.in generated by automake 1.10.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = src/modules +DIST_COMMON = $(noinst_HEADERS) $(srcdir)/Makefile.am \ + $(srcdir)/Makefile.in +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/m4/argz.m4 \ + $(top_srcdir)/m4/libtool.m4 $(top_srcdir)/m4/ltdl.m4 \ + $(top_srcdir)/m4/ltoptions.m4 $(top_srcdir)/m4/ltsugar.m4 \ + $(top_srcdir)/m4/ltversion.m4 $(top_srcdir)/m4/lt~obsolete.m4 \ + $(top_srcdir)/m4/pkg.m4 $(top_srcdir)/configure.ac +am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \ + $(ACLOCAL_M4) +mkinstalldirs = $(install_sh) -d +CONFIG_HEADER = $(top_builddir)/config.h +CONFIG_CLEAN_FILES = +am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; +am__vpath_adj = case $$p in \ + $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \ + *) f=$$p;; \ + esac; +am__strip_dir = `echo $$p | sed -e 's|^.*/||'`; +am__installdirs = "$(DESTDIR)$(moddir)" +modLTLIBRARIES_INSTALL = $(INSTALL) +LTLIBRARIES = $(mod_LTLIBRARIES) +am__DEPENDENCIES_1 = +SystemBackendPosix_la_DEPENDENCIES = $(am__DEPENDENCIES_1) +am_SystemBackendPosix_la_OBJECTS = SystemBackendPosix.lo +SystemBackendPosix_la_OBJECTS = $(am_SystemBackendPosix_la_OBJECTS) +SystemBackendPosix_la_LINK = $(LIBTOOL) --tag=CXX $(AM_LIBTOOLFLAGS) \ + $(LIBTOOLFLAGS) --mode=link $(CXXLD) $(AM_CXXFLAGS) \ + $(CXXFLAGS) $(SystemBackendPosix_la_LDFLAGS) $(LDFLAGS) -o $@ +DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir) +depcomp = $(SHELL) $(top_srcdir)/config/depcomp +am__depfiles_maybe = depfiles +CXXCOMPILE = $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \ + $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) +LTCXXCOMPILE = $(LIBTOOL) --tag=CXX $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \ + --mode=compile $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \ + $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) +CXXLD = $(CXX) +CXXLINK = $(LIBTOOL) --tag=CXX $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \ + --mode=link $(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) \ + $(LDFLAGS) -o $@ +SOURCES = $(SystemBackendPosix_la_SOURCES) +DIST_SOURCES = $(SystemBackendPosix_la_SOURCES) +HEADERS = $(noinst_HEADERS) +ETAGS = etags +CTAGS = ctags +DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST) +ACLOCAL = @ACLOCAL@ +AMTAR = @AMTAR@ +AR = @AR@ +ARGZ_H = @ARGZ_H@ +AUTOCONF = @AUTOCONF@ +AUTOHEADER = @AUTOHEADER@ +AUTOMAKE = @AUTOMAKE@ +AWK = @AWK@ +CC = @CC@ +CCDEPMODE = @CCDEPMODE@ +CFLAGS = @CFLAGS@ +CPP = @CPP@ +CPPFLAGS = @CPPFLAGS@ +CXX = @CXX@ +CXXCPP = @CXXCPP@ +CXXDEPMODE = @CXXDEPMODE@ +CXXFLAGS = @CXXFLAGS@ +CYGPATH_W = @CYGPATH_W@ +DEFS = @DEFS@ +DEPDIR = @DEPDIR@ +DSYMUTIL = @DSYMUTIL@ +DUMPBIN = @DUMPBIN@ +ECHO_C = @ECHO_C@ +ECHO_N = @ECHO_N@ +ECHO_T = @ECHO_T@ +EGREP = @EGREP@ +EXEEXT = @EXEEXT@ +FGREP = @FGREP@ +GREP = @GREP@ +GSSAPI_LIBS = @GSSAPI_LIBS@ +GnuTLS_CFLAGS = @GnuTLS_CFLAGS@ +GnuTLS_LIBS = @GnuTLS_LIBS@ +INCLTDL = @INCLTDL@ +INSTALL = @INSTALL@ +INSTALL_DATA = @INSTALL_DATA@ +INSTALL_PROGRAM = @INSTALL_PROGRAM@ +INSTALL_SCRIPT = @INSTALL_SCRIPT@ +INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@ +LD = @LD@ +LDFLAGS = @LDFLAGS@ +LIBADD_DL = @LIBADD_DL@ 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maintainer-clean-generic \ + mostlyclean mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool pdf pdf-am ps ps-am tags uninstall \ + uninstall-am uninstall-modLTLIBRARIES + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/src/modules/SystemBackendPosix.cpp b/src/modules/SystemBackendPosix.cpp new file mode 100644 index 0000000..d34b2c8 --- /dev/null +++ b/src/modules/SystemBackendPosix.cpp @@ -0,0 +1,299 @@ +/* + * SystemBackendPosix.cpp + * + * Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de> + * + * 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 + * (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, see <http://www.gnu.org/licenses/>. + */ + +#include "SystemBackendPosix.h" + +#include <Net/FdManager.h> + +#include <cstdio> +#include <cstdlib> +#include <cstring> +#include <sstream> + +#include <fcntl.h> +#include <signal.h> +#include <spawn.h> +#include <sys/wait.h> +#include <unistd.h> + +#include <sigc++/bind.h> + +#define init SystemBackendPosix_LTX_init +#define deinit SystemBackendPosix_LTX_deinit + +namespace Mad { +namespace Modules { + +SystemBackendPosix *SystemBackendPosix::backend = 0; + +std::map<pid_t, sigc::slot<void, int> > SystemBackendPosix::processes; +std::map<pid_t, sigc::slot<void, int, const std::string&> > SystemBackendPosix::processesWithOutput; +std::map<pid_t, int> SystemBackendPosix::processesWOHandles; +std::map<pid_t, std::string > SystemBackendPosix::processesWOOutput; + + +void SystemBackendPosix::setChildHandler() { + struct sigaction action; + + action.sa_handler = childHandler; + sigemptyset(&action.sa_mask); + action.sa_flags = 0; + + sigaction(SIGCHLD, &action, 0); +} + +SystemBackendPosix::~SystemBackendPosix() { + struct sigaction action; + + action.sa_handler = SIG_DFL; + sigemptyset(&action.sa_mask); + action.sa_flags = 0; + + sigaction(SIGCHLD, &action, 0); +} + + +void SystemBackendPosix::fsInfoCallback(int, const std::string &output, const sigc::slot<void, const std::vector<FSInfo>& > &callback) { + std::vector<FSInfo> ret; + std::istringstream stream(output); + std::string str; + + std::getline(stream, str); // ignore first line + + while(!stream.eof()) { + std::getline(stream, str); + + char *fsName = new char[str.length()+1]; + char *mountedOn = new char[str.length()+1]; + + FSInfo info; + + if(std::sscanf(str.c_str(), "%s %lld %lld %lld %*d%% %s", fsName, &info.total, &info.used, &info.available, mountedOn) == 5) { + info.fsName = fsName; + info.mountedOn = mountedOn; + + ret.push_back(info); + } + + delete [] fsName; + delete [] mountedOn; + } + + callback(ret); +} + +bool SystemBackendPosix::fsInfo(const sigc::slot<void, const std::vector<FSInfo>& > &callback) { + std::vector<std::string> argv; + + argv.push_back("/bin/df"); + argv.push_back("-P"); + argv.push_back("-k"); + + return execWithOutput(sigc::bind(sigc::mem_fun(this, &SystemBackendPosix::fsInfoCallback), callback), "/bin/df", argv); +} + + +void SystemBackendPosix::childHandler(int) { + int status; + pid_t pid; + + // TODO Don't call callbacks directly + + while((pid = waitpid(-1, &status, WNOHANG)) > 0) { + std::map<pid_t, sigc::slot<void, int> >::iterator it = processes.find(pid); + + if(it != processes.end()) { + it->second(status); + processes.erase(it); + } + else { + std::map<pid_t, sigc::slot<void, int, const std::string&> >::iterator it2 = processesWithOutput.find(pid); + + if(it2 != processesWithOutput.end()) { + char buffer[1024]; + ssize_t n; + std::string &output = processesWOOutput[pid]; + int handle = processesWOHandles[pid]; + + while((n = read(handle, buffer, sizeof(buffer))) > 0) + output += std::string(buffer, n); + + Net::FdManager::get()->unregisterFd(handle); + close(handle); + + it2->second(status, output); + processesWithOutput.erase(it2); + processesWOHandles.erase(pid); + processesWOOutput.erase(pid); + } + } + } + + setChildHandler(); +} + +void SystemBackendPosix::outputHandler(short events, pid_t pid) { + char buf[1024]; + + if(events & POLLIN) { + sigset_t set, oldset; + sigemptyset(&set); + sigaddset(&set, SIGCHLD); + sigprocmask(SIG_BLOCK, &set, &oldset); + + ssize_t ret; + + std::map<pid_t, int>::iterator handle = processesWOHandles.find(pid); + if(handle == processesWOHandles.end()) + return; + + while((ret = read(handle->second, buf, sizeof(buf))) > 0) + processesWOOutput[pid] += std::string(buf, ret); + + sigprocmask(SIG_SETMASK, &oldset, 0); + } +} + +std::pair<char**, char**> SystemBackendPosix::makeArgs(const std::string &filename, const std::vector<std::string> &argv, const std::vector<std::string> &env) { + char **argvp, **envp; + + if(argv.empty()) { + argvp = new char*[2]; + + argvp[0] = strdup(filename.c_str()); + argvp[1] = 0; + } + else { + argvp = new char*[argv.size() + 1]; + + for(size_t s = 0; s < argv.size(); ++s) { + argvp[s] = strdup(argv[s].c_str()); + } + + argvp[argv.size()] = 0; + } + + if(env.empty()) { + envp = environ; + } + else { + envp = new char*[env.size() + 1]; + + for(size_t s = 0; s < env.size(); ++s) { + envp[0] = strdup(env[s].c_str()); + } + + envp[env.size()] = 0; + } + + return std::make_pair(argvp, envp); +} + +void SystemBackendPosix::destroyArgs(std::pair<char**, char**> args) { + for(char **p = args.first; *p != 0; ++p) + std::free(*p); + + delete [] args.first; + + if(args.second != environ) { + for(char **p = args.second; *p != 0; ++p) + std::free(*p); + + delete [] args.second; + } +} + +bool SystemBackendPosix::exec(const sigc::slot<void, int> &resultHandler, const std::string &filename, const std::vector<std::string> &argv, const std::vector<std::string> &env) { + pid_t pid; + std::pair<char**, char**> args = makeArgs(filename, argv, env); + + sigset_t set, oldset; + sigemptyset(&set); + sigaddset(&set, SIGCHLD); + sigprocmask(SIG_BLOCK, &set, &oldset); + + bool ret = (posix_spawnp(&pid, filename.c_str(), 0, 0, args.first, args.second) == 0); + + if(ret) + processes.insert(std::make_pair(pid, resultHandler)); + + sigprocmask(SIG_SETMASK, &oldset, 0); + + destroyArgs(args); + + return ret; +} + +bool SystemBackendPosix::execWithOutput(const sigc::slot<void, int, const std::string&> &resultHandler, const std::string &filename, const std::vector<std::string> &argv, const std::vector<std::string> &env) { + pid_t pid; + std::pair<char**, char**> args = makeArgs(filename, argv, env); + + int saveStdout = dup(STDOUT_FILENO); + int pipeHandles[2]; + + pipe(pipeHandles); + + fcntl(pipeHandles[0], F_SETFD, FD_CLOEXEC); + + int flags = fcntl(pipeHandles[0], F_GETFL, 0); + fcntl(pipeHandles[0], F_SETFL, flags | O_NONBLOCK); + + sigset_t set, oldset; + sigemptyset(&set); + sigaddset(&set, SIGCHLD); + sigprocmask(SIG_BLOCK, &set, &oldset); + + dup2(pipeHandles[1], STDOUT_FILENO); // set the new pipe as stdout + close(pipeHandles[1]); + + bool ret = (posix_spawnp(&pid, filename.c_str(), 0, 0, args.first, args.second) == 0); + + if(ret) { + processesWithOutput.insert(std::make_pair(pid, resultHandler)); + processesWOHandles.insert(std::make_pair(pid, pipeHandles[0])); + processesWOOutput.insert(std::make_pair(pid, std::string())); + + Net::FdManager::get()->registerFd(pipeHandles[0], sigc::bind(sigc::ptr_fun(&SystemBackendPosix::outputHandler), pid), POLLIN); + } + + dup2(saveStdout, STDOUT_FILENO); // restore old stdout + close(saveStdout); + + sigprocmask(SIG_SETMASK, &oldset, 0); + + destroyArgs(args); + + return ret; +} + +} +} + +extern "C" { + +void init() { + Mad::Modules::SystemBackendPosix::registerBackend(); +} + +void deinit() { + Mad::Modules::SystemBackendPosix::unregisterBackend(); +} + +} + diff --git a/src/modules/SystemBackendPosix.h b/src/modules/SystemBackendPosix.h new file mode 100644 index 0000000..9be16af --- /dev/null +++ b/src/modules/SystemBackendPosix.h @@ -0,0 +1,96 @@ +/* + * SystemBackendPosix.h + * + * Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de> + * + * 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 + * (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, see <http://www.gnu.org/licenses/>. + */ + +#ifndef MAD_MODULE_SYSTEMBACKENDPOSIX_H_ +#define MAD_MODULE_SYSTEMBACKENDPOSIX_H_ + +#include <Common/SystemBackend.h> + +#include <map> +#include <string> +#include <vector> + +#include <sys/types.h> +#include <sigc++/signal.h> +#include <sigc++/hide.h> + +namespace Mad { +namespace Modules { + +class SystemBackendPosix : public Common::SystemBackend { + private: + static SystemBackendPosix *backend; + static std::map<pid_t, sigc::slot<void, int> > processes; + + static std::map<pid_t, sigc::slot<void, int, const std::string&> > processesWithOutput; + static std::map<pid_t, int> processesWOHandles; + static std::map<pid_t, std::string > processesWOOutput; + + static void setChildHandler(); + + static void childHandler(int); + + static void outputHandler(short events, pid_t pid); + + static std::pair<char**, char**> makeArgs(const std::string &filename, const std::vector<std::string> &argv, const std::vector<std::string> &env); + static void destroyArgs(std::pair<char**, char**> args); + + SystemBackendPosix() { + setChildHandler(); + } + + void fsInfoCallback(int, const std::string &output, const sigc::slot<void, const std::vector<FSInfo>& > &callback); + + protected: + virtual bool fsInfo(const sigc::slot<void, const std::vector<FSInfo>& > &callback); + + virtual bool doShutdown(const sigc::slot<void> &callback) {return exec(sigc::hide(callback), "/sbin/halt");} + virtual bool doReboot(const sigc::slot<void> &callback) {return exec(sigc::hide(callback), "/sbin/reboot");} + + public: + ~SystemBackendPosix(); + + static void registerBackend() { + if(backend) + return; + + backend = new SystemBackendPosix(); + SystemBackend::registerBackend(backend); + } + + static void unregisterBackend() { + if(!backend) + return; + + SystemBackend::unregisterBackend(backend); + delete backend; + backend = 0; + } + + static bool exec(const sigc::slot<void, int> &resultHandler, const std::string &filename, const std::vector<std::string> &argv = std::vector<std::string>(), + const std::vector<std::string> &env = std::vector<std::string>()); + + static bool execWithOutput(const sigc::slot<void, int, const std::string&> &resultHandler, const std::string &filename, const std::vector<std::string> &argv = std::vector<std::string>(), + const std::vector<std::string> &env = std::vector<std::string>()); +}; + +} +} + +#endif /* MAD_MODULE_SYSTEMBACKENDPOSIX_H_ */ |