Add i3-msg, a sample implementation and hopefully useful utility
This commit is contained in:
Michael Stapelberg
parent
45c3341e09
commit
ec9b58ada9
75
Makefile
75
Makefile
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@ -1,72 +1,6 @@
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UNAME=$(shell uname)
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DEBUG=1
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INSTALL=install
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GIT_VERSION=$(shell git describe --tags --always)
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VERSION=$(shell git describe --tags --abbrev=0)
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TOPDIR=$(shell pwd)
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CFLAGS += -std=c99
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CFLAGS += -pipe
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CFLAGS += -Wall
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CFLAGS += -Wunused
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CFLAGS += -Iinclude
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CFLAGS += -I/usr/local/include
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CFLAGS += -DI3_VERSION=\"${GIT_VERSION}\"
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# Check if pkg-config is installed, because without pkg-config, the following
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# check for the version of libxcb cannot be done.
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ifeq ($(shell which pkg-config 2>/dev/null 1>/dev/null || echo 1),1)
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$(error "pkg-config was not found")
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endif
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ifeq ($(shell pkg-config --exists xcb-keysyms || echo 1),1)
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$(error "pkg-config could not find xcb-keysyms.pc")
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endif
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ifeq ($(shell pkg-config --exact-version=0.3.3 xcb-keysyms && echo 1),1)
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# xcb-keysyms fixed API from 0.3.3 to 0.3.4, so for some months, we will
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# have this here. Distributions should upgrade their libxcb in the meantime.
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CFLAGS += -DOLD_XCB_KEYSYMS_API
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endif
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LDFLAGS += -lm
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LDFLAGS += -lxcb-event
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LDFLAGS += -lxcb-property
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LDFLAGS += -lxcb-keysyms
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LDFLAGS += -lxcb-atom
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LDFLAGS += -lxcb-aux
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LDFLAGS += -lxcb-icccm
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LDFLAGS += -lxcb-xinerama
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LDFLAGS += -lX11
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LDFLAGS += -lev
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LDFLAGS += -L/usr/local/lib -L/usr/pkg/lib
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ifeq ($(UNAME),NetBSD)
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# We need -idirafter instead of -I to prefer the system’s iconv over GNU libiconv
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CFLAGS += -idirafter /usr/pkg/include
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LDFLAGS += -Wl,-rpath,/usr/local/lib -Wl,-rpath,/usr/pkg/lib
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endif
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ifeq ($(UNAME),FreeBSD)
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LDFLAGS += -liconv
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endif
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ifeq ($(UNAME),Linux)
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CFLAGS += -D_GNU_SOURCE
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endif
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ifeq ($(DEBUG),1)
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# Extended debugging flags, macros shall be available in gcc
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CFLAGS += -gdwarf-2
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CFLAGS += -g3
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else
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CFLAGS += -O2
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endif
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# Don’t print command lines which are run
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.SILENT:
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# Always remake the following targets
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.PHONY: install clean dist distclean
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include $(TOPDIR)/common.mk
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# Depend on the object files of all source-files in src/*.c and on all header files
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FILES=$(patsubst %.c,%.o,$(wildcard src/*.c))
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@ -80,6 +14,9 @@ src/%.o: src/%.c ${HEADERS}
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all: ${FILES}
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echo "LINK i3"
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$(CC) -o i3 ${FILES} $(LDFLAGS)
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echo ""
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echo "SUBDIR i3-msg"
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$(MAKE) TOPDIR=$(TOPDIR) -C i3-msg
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install: all
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echo "INSTALL"
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@ -89,6 +26,7 @@ install: all
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$(INSTALL) -m 0755 i3 $(DESTDIR)/usr/bin/
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test -e $(DESTDIR)/etc/i3/config || $(INSTALL) -m 0644 i3.config $(DESTDIR)/etc/i3/config
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$(INSTALL) -m 0644 i3.desktop $(DESTDIR)/usr/share/xsessions/
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$(MAKE) TOPDIR=$(TOPDIR) -C i3-msg
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dist: clean
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[ ! -d i3-${VERSION} ] || rm -rf i3-${VERSION}
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@ -108,6 +46,7 @@ clean:
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rm -f src/*.o
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$(MAKE) -C docs clean
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$(MAKE) -C man clean
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$(MAKE) TOPDIR=$(TOPDIR) -C i3-msg clean
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distclean: clean
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rm -f i3
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@ -0,0 +1,70 @@
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UNAME=$(shell uname)
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DEBUG=1
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INSTALL=install
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GIT_VERSION=$(shell git describe --tags --always)
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VERSION=$(shell git describe --tags --abbrev=0)
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CFLAGS += -std=c99
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CFLAGS += -pipe
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CFLAGS += -Wall
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CFLAGS += -Wunused
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CFLAGS += -Iinclude
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CFLAGS += -I/usr/local/include
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CFLAGS += -DI3_VERSION=\"${GIT_VERSION}\"
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# Check if pkg-config is installed, because without pkg-config, the following
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# check for the version of libxcb cannot be done.
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ifeq ($(shell which pkg-config 2>/dev/null 1>/dev/null || echo 1),1)
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$(error "pkg-config was not found")
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endif
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ifeq ($(shell pkg-config --exists xcb-keysyms || echo 1),1)
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$(error "pkg-config could not find xcb-keysyms.pc")
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endif
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ifeq ($(shell pkg-config --exact-version=0.3.3 xcb-keysyms && echo 1),1)
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# xcb-keysyms fixed API from 0.3.3 to 0.3.4, so for some months, we will
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# have this here. Distributions should upgrade their libxcb in the meantime.
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CFLAGS += -DOLD_XCB_KEYSYMS_API
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endif
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LDFLAGS += -lm
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LDFLAGS += -lxcb-event
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LDFLAGS += -lxcb-property
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LDFLAGS += -lxcb-keysyms
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LDFLAGS += -lxcb-atom
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LDFLAGS += -lxcb-aux
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LDFLAGS += -lxcb-icccm
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LDFLAGS += -lxcb-xinerama
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LDFLAGS += -lX11
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LDFLAGS += -lev
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LDFLAGS += -L/usr/local/lib -L/usr/pkg/lib
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ifeq ($(UNAME),NetBSD)
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# We need -idirafter instead of -I to prefer the system’s iconv over GNU libiconv
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CFLAGS += -idirafter /usr/pkg/include
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LDFLAGS += -Wl,-rpath,/usr/local/lib -Wl,-rpath,/usr/pkg/lib
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endif
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ifeq ($(UNAME),FreeBSD)
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LDFLAGS += -liconv
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endif
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ifeq ($(UNAME),Linux)
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CFLAGS += -D_GNU_SOURCE
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endif
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ifeq ($(DEBUG),1)
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# Extended debugging flags, macros shall be available in gcc
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CFLAGS += -gdwarf-2
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CFLAGS += -g3
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else
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CFLAGS += -O2
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endif
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# Don’t print command lines which are run
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.SILENT:
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# Always remake the following targets
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.PHONY: install clean dist distclean
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@ -0,0 +1,28 @@
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# Default value so one can compile i3-msg standalone
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TOPDIR=..
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include $(TOPDIR)/common.mk
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# Depend on the object files of all source-files in src/*.c and on all header files
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FILES=$(patsubst %.c,%.o,$(wildcard *.c))
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HEADERS=$(wildcard *.h)
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# Depend on the specific file (.c for each .o) and on all headers
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%.o: %.c ${HEADERS}
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echo "CC $<"
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$(CC) $(CFLAGS) -c -o $@ $<
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all: ${FILES}
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echo "LINK i3-msg"
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$(CC) -o i3-msg ${FILES} $(LDFLAGS)
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install: all
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echo "INSTALL"
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$(INSTALL) -d -m 0755 $(DESTDIR)/usr/bin
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$(INSTALL) -m 0755 i3-msg $(DESTDIR)/usr/bin/
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clean:
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rm -f *.o
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distclean: clean
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rm -f i3-msg
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@ -0,0 +1,105 @@
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/*
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* vim:ts=8:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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*
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* © 2009 Michael Stapelberg and contributors
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*
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* See file LICENSE for license information.
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*
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* i3-msg/main.c: Utility which sends messages to a running i3-instance using
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* IPC via UNIX domain sockets.
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*
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* This serves as an example for how to send your own messages to i3.
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* Additionally, it’s even useful sometimes :-).
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*
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*/
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#include <ev.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <err.h>
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#include <stdint.h>
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#include <getopt.h>
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static void ipc_send_message(int sockfd, uint32_t message_size,
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uint32_t message_type, uint8_t *payload) {
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int buffer_size = strlen("i3-ipc") + sizeof(uint32_t) + sizeof(uint32_t) + message_size;
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char msg[buffer_size];
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char *walk = msg;
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strcpy(walk, "i3-ipc");
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walk += strlen("i3-ipc");
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memcpy(walk, &message_size, sizeof(uint32_t));
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walk += sizeof(uint32_t);
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memcpy(walk, &message_type, sizeof(uint32_t));
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walk += sizeof(uint32_t);
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memcpy(walk, payload, message_size);
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int sent_bytes = 0;
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int bytes_to_go = buffer_size;
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while (sent_bytes < bytes_to_go) {
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int n = write(sockfd, msg + sent_bytes, bytes_to_go);
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if (n == -1)
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err(EXIT_FAILURE, "write() failed");
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sent_bytes += n;
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bytes_to_go -= n;
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}
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}
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int main(int argc, char *argv[]) {
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char *socket_path = "/tmp/i3-ipc.sock";
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int o, option_index = 0;
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static struct option long_options[] = {
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{"socket", required_argument, 0, 's'},
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{"type", required_argument, 0, 't'},
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{"version", no_argument, 0, 'v'},
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{"help", no_argument, 0, 'h'},
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{0, 0, 0, 0}
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};
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char *options_string = "s:t:vh";
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while ((o = getopt_long(argc, argv, options_string, long_options, &option_index)) != -1) {
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if (o == 's') {
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socket_path = strdup(optarg);
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break;
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} else if (o == 't') {
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printf("currently only commands are implemented\n");
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} else if (o == 'v') {
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printf("i3-msg " I3_VERSION);
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return 0;
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} else if (o == 'h') {
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printf("i3-msg " I3_VERSION);
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printf("i3-msg [-s <socket>] [-t <type>] <message>\n");
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return 0;
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}
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}
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if (optind >= argc) {
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fprintf(stderr, "Error: missing message\n");
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fprintf(stderr, "i3-msg [-s <socket>] [-t <type>] <message>\n");
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return 1;
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}
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int sockfd = socket(AF_LOCAL, SOCK_STREAM, 0);
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struct sockaddr_un addr;
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memset(&addr, 0, sizeof(struct sockaddr_un));
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addr.sun_family = AF_LOCAL;
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strcpy(addr.sun_path, socket_path);
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if (connect(sockfd, &addr, sizeof(struct sockaddr_un)) < 0)
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err(-1, "Could not connect to i3");
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ipc_send_message(sockfd, strlen(argv[optind]), 0, (uint8_t*)argv[optind]);
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close(sockfd);
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return 0;
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}
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