Add service debugging support (afm-debug).

Add necessary tools/scripts, such as afm-debug, to allow service binding.
These tools are only available in develvopment (AGL_DEVEL is set).

Change-Id: I4e946146af985c74c8bd97d8c118b932394bbc5e
Signed-off-by: Sebastien Douheret <sebastien.douheret@iot.bzh>
Signed-off-by: José Bollo <jose.bollo@iot.bzh>

5 files changed, 388 insertions, 3 deletions

diff --git a/conf/CMakeLists.txt b/conf/CMakeLists.txt
index cf3d3ec..5f15dd6 100644
--- a/conf/CMakeLists.txt
+++ b/conf/CMakeLists.txt
@@ -20,6 +20,7 @@ cmake_minimum_required(VERSION 2.8)
 
 configure_file(afm-launch.conf.in afm-launch.conf)
 configure_file(afm-unit.conf.in afm-unit.conf)
+configure_file(afm-unit-debug.conf.in afm-unit-debug.conf)
 configure_file(afm-system-daemon.service.in afm-system-daemon.service)
 configure_file(afm-user-daemon.service.in afm-user-daemon.service)
 
@@ -34,7 +35,12 @@ if(NOT USE_SDK)
 	install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/afm-user-daemon.conf      DESTINATION ${SYSCONFDIR_DBUS_USER})
 	install(FILES ${CMAKE_CURRENT_BINARY_DIR}/afm-user-daemon.service   DESTINATION ${UNITDIR_USER})
 	install(FILES ${CMAKE_CURRENT_BINARY_DIR}/afm-launch.conf           DESTINATION ${afm_confdir})
-	install(FILES ${CMAKE_CURRENT_BINARY_DIR}/afm-unit.conf             DESTINATION ${afm_confdir})
 	install(DIRECTORY DESTINATION ${afm_confdir}/unit.env.d)
+
+	if(AGL_DEVEL)
+		install(FILES ${CMAKE_CURRENT_BINARY_DIR}/afm-unit-debug.conf       DESTINATION ${afm_confdir} RENAME afm-unit.conf)
+	else()
+		install(FILES ${CMAKE_CURRENT_BINARY_DIR}/afm-unit.conf             DESTINATION ${afm_confdir})
+	endif()
 endif()
 
diff --git a/conf/afm-unit-debug.conf.in b/conf/afm-unit-debug.conf.in
new file mode 100644
index 0000000..3429f2d
--- /dev/null
+++ b/conf/afm-unit-debug.conf.in
@@ -0,0 +1,286 @@
+;---------------------------------------------------------------------------------
+; File:
+;
+;    afm-unit.conf
+;
+; Role:
+;
+;    Configure how installation of widget produces unit files for systemd
+;
+; Processing and format:
+;
+;    1. File load
+;
+;           Lines beginning with ; are firstly removed
+;
+;    2. File instantiation
+;
+;           Mustache (extended) substitutions are applied using JSON
+;           data deduced from config.xml file of the widget.
+;
+;    3. Extraction of units
+;
+;           Extract produced units, pack it (remove empty lines and directives)
+;
+; Directives:
+;
+;    Any directive occupy one whole line starting with %
+;
+;     - %nl
+;
+;             produce an empty line at the end
+;
+;     - %begin systemd-unit
+;     - %end systemd-unit
+;
+;             delimit the produced unit
+;
+;     - %systemd-unit user
+;     - %systemd-unit system
+;
+;             tells the kind of unit (user/system)
+;
+;     - %systemd-unit service NAME
+;     - %systemd-unit socket NAME
+;
+;             gives the name and type of the unit
+;
+;     - %systemd-unit wanted-by NAME
+;
+;             tells to install a link to unit in the wants of NAME
+;
+; Setting variables:
+;
+;    AFM uses the feature of systemd that completely ignores options prefixed
+;    with X-
+;
+;    Consequently, options starting with X-AFM- are recorded as public data
+;    about the application and options starting starting with X-AFM-- are
+;    recorded as private data.
+;
+;    Examples:
+;
+;        X-AFM-description={{description}}
+;
+;              Records the description of the unit in the field "description"
+;              of both the public and private object describing the unit.
+;
+;        X-AFM--wgtdir={{:#metadata.install-dir}}
+;
+;              Records the installation directory path in the field "wgtdir"
+;              of the private object only.
+;
+;---------------------------------------------------------------------------------
+{{#targets}}
+
+;---------------------------------------------------------------------------------
+;----        P R O V I D E D   U N I T S                                      ----
+;---------------------------------------------------------------------------------
+%begin systemd-unit
+
+# auto generated by wgtpkg-unit for {{id}} version {{version}} target {{:#target}} of {{idaver}}
+%nl
+
+[Unit]
+Description={{description}}
+X-AFM-description={{description}}
+X-AFM-name={{name.content}}
+X-AFM-shortname={{name.short}}
+X-AFM-id={{idaver}}{{^#target=main}}@{{:#target}}{{/#target=main}}
+X-AFM-version={{version}}
+X-AFM-author={{author.content}}
+X-AFM-author-email={{author.email}}
+X-AFM-width={{width}}
+X-AFM-height={{height}}
+X-AFM--ID={{id}}
+X-AFM--target-name={{:#target}}
+X-AFM--content={{content.src}}
+X-AFM--type={{content.type}}
+X-AFM--wgtdir={{:#metadata.install-dir}}
+X-AFM--workdir={{&#metadata.app-data-dir}}/{{id}}
+%nl
+
+Wants=sockets.target
+
+# Adds check to smack
+ConditionSecurity=smack
+%nl
+
+# Automatic bound to required api
+{{#required-api}}
+{{#value=auto|ws}}
+BindsTo=afm-api-ws-{{name}}
+After=afm-api-ws-{{name}}
+{{/value=auto|ws}}
+{{/required-api}}
+%nl
+
+[Service]
+EnvironmentFile=-@afm_confdir@/unit.env.d/*
+SmackProcessLabel=User::App::{{id}}
+SuccessExitStatus=0 SIGKILL
+
+{{#required-permission}}
+  {{#urn:AGL:permission::platform:no-oom}}      OOMScoreAdjust=-500             {{/urn:AGL:permission::platform:no-oom}}
+  {{#urn:AGL:permission::partner:real-time}}    IOSchedulingClass=realtime      {{/urn:AGL:permission::partner:real-time}}
+#  {{^urn:AGL:permission::partner:real-time}}    RestrictRealtime=on             {{/urn:AGL:permission::partner:real-time}}
+  {{#urn:AGL:permission::public:display}}       SupplementaryGroups=display     {{/urn:AGL:permission::public:display}}
+  {{^urn:AGL:permission::public:syscall:clock}} SystemCallFilter=~@clock        {{/urn:AGL:permission::public:syscall:clock}}
+{{/required-permission}}
+%nl
+
+WorkingDirectory=-{{&#metadata.app-data-dir}}/{{id}}
+ExecStartPre=/bin/mkdir -p {{&#metadata.app-data-dir}}/{{id}}
+Environment=AFM_APP_INSTALL_DIR={{:#metadata.install-dir}}
+
+; Needed to enable debug
+Environment=AFM_ID={{idaver}}{{^#target=main}}@{{:#target}}{{/#target=main}}
+EnvironmentFile=-/var/run/afm-debug/{{idaver}}{{^#target=main}}@{{:#target}}{{/#target=main}}.env
+
+%systemd-unit user
+{{#required-permission.urn:AGL:permission::public:hidden}}\
+%systemd-unit service afm-service-{{idaver}}{{^#target=main}}@{{:#target}}{{/#target=main}}
+{{/required-permission.urn:AGL:permission::public:hidden}}\
+{{^required-permission.urn:AGL:permission::public:hidden}}\
+%systemd-unit service afm-appli-{{idaver}}{{^#target=main}}@{{:#target}}{{/#target=main}}
+{{/required-permission.urn:AGL:permission::public:hidden}}\
+
+
+;---------------------------------------------------------------------------------
+;----   text/html  application/vnd.agl.native  application/vnd.agl.service    ----
+;---------------------------------------------------------------------------------
+{{#content.type=text/html|application/vnd.agl.native|application/vnd.agl.service}}
+
+{{^content.type=application/vnd.agl.service}}
+X-AFM--http-port={{:#metadata.http-port}}
+{{/content.type=application/vnd.agl.service}}
+
+ExecStart=/usr/bin/afb-daemon \
+	{{^content.type=application/vnd.agl.service}}\
+		--port={{:#metadata.http-port}} \
+		--random-token \
+	{{/content.type=application/vnd.agl.service}}\
+	--rootdir={{:#metadata.install-dir}} \
+	--workdir={{&#metadata.app-data-dir}}/{{id}} \
+	{{#required-permission.urn:AGL:permission::public:no-htdocs}}\
+		--roothttp=. \
+	{{/required-permission.urn:AGL:permission::public:no-htdocs}}\
+	{{^required-permission.urn:AGL:permission::public:no-htdocs}}\
+		--roothttp=htdocs \
+	{{/required-permission.urn:AGL:permission::public:no-htdocs}}\
+	{{#required-permission.urn:AGL:permission::public:applications:read}}\
+		--alias=/icons:{{:#metadata.icons-dir}} \
+	{{/required-permission.urn:AGL:permission::public:applications:read}}\
+	{{#required-api}}\
+		{{#value=auto}}\
+			--ws-client=unix:%t/apis/ws/{{name}} \
+		{{/value=auto}}\
+		{{#value=ws}}\
+			--ws-client=unix:%t/apis/ws/{{name}} \
+		{{/value=ws}}\
+		{{#value=dbus}}\
+			--dbus-client={{name}} \
+		{{/value=dbus}}\
+		{{#value=link}}\
+			--binding=%t/apis/lib/{{name}} \
+		{{/value=link}}\
+		{{#value=cloud}}\
+			--cloud-client={{name}} \
+		{{/value=cloud}}\
+		{{#value=local}}\
+			--binding={{:#metadata.install-dir}}/{{name}} \
+		{{/value=local}}\
+	{{/required-api}}\
+	{{#provided-api}}\
+		{{#value=auto}}\
+			{{^required-permission.urn:AGL:permission::partner:service:no-ws}}\
+				--ws-server=sd:{{name}} \
+			{{/required-permission.urn:AGL:permission::partner:service:no-ws}}\
+			{{^required-permission.urn:AGL:permission::partner:service:no-dbus}}\
+				--dbus-server={{name}} \
+			{{/required-permission.urn:AGL:permission::partner:service:no-dbus}}\
+		{{/value=auto}}\
+		{{#value=ws}}\
+			--ws-server=sd:{{name}} \
+		{{/value=ws}}\
+		{{#value=dbus}}\
+			--dbus-server={{name}} \
+		{{/value=dbus}}\
+	{{/provided-api}}\
+	{{#content.type=text/html}}\
+		--exec /usr/bin/web-runtime http://localhost:@p/{{content.src}}?token=@t
+	{{/content.type=text/html}}\
+	{{#content.type=application/vnd.agl.native}}\
+		--exec {{:#metadata.install-dir}}/{{content.src}} @p @t
+	{{/content.type=application/vnd.agl.native}}\
+	{{#content.type=application/vnd.agl.service}}\
+		--no-httpd
+	{{/content.type=application/vnd.agl.service}}
+
+{{/content.type=text/html|application/vnd.agl.native|application/vnd.agl.service}}
+
+
+;---------------------------------------------------------------------------------
+;----                 application/x-executable                                ----
+;---------------------------------------------------------------------------------
+{{#content.type=application/x-executable}}
+
+Environment=LD_LIBRARY_PATH=$ORIGIN/$LIB
+
+ExecStart={{:#metadata.install-dir}}/{{content.src}}
+
+{{/content.type=application/x-executable}}
+
+;---------------------------------------------------------------------------------
+; auto start
+;---------------------------------------------------------------------------------
+{{#required-permission.urn:AGL:permission::system:run-by-default}}
+%nl
+[Install]
+WantedBy=default.target
+%systemd-unit wanted-by default.target
+{{/required-permission.urn:AGL:permission::system:run-by-default}}
+
+%end systemd-unit
+
+
+;---------------------------------------------------------------------------------
+;----        P R O V I D E D   A P I S                                        ----
+;---------------------------------------------------------------------------------
+
+{{#provided-api}}
+{{#value=ws|auto}}
+
+%begin systemd-unit
+
+# auto generated by wgtpkg-unit for {{id}} version {{version}} target {{:#target}} of {{idaver}}
+#
+%systemd-unit user
+%systemd-unit socket afm-api-ws-{{name}}
+
+[Socket]
+SmackLabel=*
+ListenStream=%t/apis/ws/{{name}}
+FileDescriptorName={{name}}
+
+{{#required-permission.urn:AGL:permission::public:hidden}}\
+Service=afm-service-{{idaver}}{{^#target=main}}@{{:#target}}{{/#target=main}}.service
+{{/required-permission.urn:AGL:permission::public:hidden}}\
+{{^required-permission.urn:AGL:permission::public:hidden}}\
+Service=afm-appli-{{idaver}}{{^#target=main}}@{{:#target}}{{/#target=main}}.service
+{{/required-permission.urn:AGL:permission::public:hidden}}\
+
+;---------------------------------------------------------------------------------
+%nl
+[Install]
+WantedBy=sockets.target
+%systemd-unit wanted-by sockets.target
+;---------------------------------------------------------------------------------
+
+%end systemd-unit
+
+{{/value=ws|auto}}
+{{/provided-api}}
+
+{{/targets}}
+
diff --git a/conf/afm-unit.conf.in b/conf/afm-unit.conf.in
index 7f35a58..43cfce5 100644
--- a/conf/afm-unit.conf.in
+++ b/conf/afm-unit.conf.in
@@ -13,7 +13,7 @@
 ;
 ;           Lines beginning with ; are firstly removed
 ;
-;    2. File instanciation
+;    2. File instantiation
 ;
 ;           Mustache (extended) substitutions are applied using JSON
 ;           data deduced from config.xml file of the widget.
@@ -62,7 +62,7 @@
 ;
 ;        X-AFM-description={{description}}
 ;
-;              Records the descritpion of the unit in the field "description"
+;              Records the description of the unit in the field "description"
 ;              of both the public and private object describing the unit.
 ;
 ;        X-AFM--wgtdir={{:#metadata.install-dir}}
diff --git a/scripts/CMakeLists.txt b/scripts/CMakeLists.txt
index aef41cb..bf0846c 100644
--- a/scripts/CMakeLists.txt
+++ b/scripts/CMakeLists.txt
@@ -20,5 +20,8 @@ cmake_minimum_required(VERSION 2.8)
 
 if(NOT USE_SDK)
 	install(PROGRAMS afm-util DESTINATION ${CMAKE_INSTALL_BINDIR})
+	if(AGL_DEVEL)
+		install(PROGRAMS afm-debug DESTINATION ${CMAKE_INSTALL_BINDIR})
+	endif()
 endif()
 
diff --git a/scripts/afm-debug b/scripts/afm-debug
new file mode 100644
index 0000000..18ecae2
--- /dev/null
+++ b/scripts/afm-debug
@@ -0,0 +1,90 @@
+#!/bin/bash
+
+###########################################################################
+# Copyright 2017 IoT.bzh
+#
+# Author: Stephane Desneux <sdx@iot.bzh>
+#         Sebastien Douheret <sebastien@iot.bzh>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+###########################################################################
+
+# This script should be invoked by gdb client through a ssh connection.
+# It relays gdbmi protocol from gdbserver to gdb client
+#
+# WARNING: nothing should be sent to stdout except gdbserver output
+
+# FIXME: add support of --debugger option to support tcf or gdb-remote
+
+
+function error() {
+	echo "ERR: $@" >&2
+	exit 1
+}
+function info() {
+	echo "INF: $@" >&2
+}
+
+# setup debug dir (shared with service file)
+DBGDIR=/var/run/afm-debug
+mkdir -p $DBGDIR
+
+# check application name passed as first arg by gdb
+APP=$1
+[[ -z "$APP" ]] && error "Invalid application name"
+
+# redirect to log file
+exec 2>$DBGDIR/$APP.dbgclt.log
+
+# activate DEBUG in environment file sourced in systemd service
+AFB_WAIT_POINT="start-start"
+echo "AFB_DEBUG_WAIT=$AFB_WAIT_POINT" >$DBGDIR/$APP.env
+
+# remove debug env file on exit
+trap "rm $DBGDIR/$APP.*" STOP INT QUIT EXIT
+
+# ask appfw to start application
+pid=$(afm-util start $APP)
+[[ -z "$pid" || ! -e "/proc/$pid" ]] && error "Failed to start application $APP"
+info "$APP started with pid=$pid"
+
+# wait debugging process is stop/waiting at start-start point
+AFB_FILE=/tmp/afb-debug-$pid
+tmo=100
+info "Waiting for process stopped..."
+while [[ ! -e "$AFB_FILE" ]]; do
+    sleep 0.1
+    tmo=$(expr $tmo - 1)
+    [[ "$tmo" == "0" ]] && error "Timeout waiting for process $pid stopped"
+done
+
+info "Waiting for process stopped..."
+AFB_WAIT_FILE=/tmp/afb-debug-$pid
+tmo=100
+res=1
+while [[ "$res" != "0" ]]; do
+    sleep 0.1
+    tmo=$(expr $tmo - 1)
+    [[ "$tmo" == "0" ]] && error "Timeout waiting for process $pid stopped"
+    grep $AFB_WAIT_POINT $AFB_WAIT_FILE > /dev/null 2>&1
+    res=$?
+done
+
+# debugging
+info "Attaching gdbserver to pid $pid ..."
+gdbserver --attach - $pid
+
+# end of debug session
+info "proxy connection terminated - killing $APP (pid $pid)"
+afm-util kill $pid >&2
+info "$APP killed"