4 files changed, 275 insertions, 0 deletions
diff --git a/lib/container/log b/lib/container/log
new file mode 100755
index 0000000..41ac087
--- /dev/null
+++ b/lib/container/log
@@ -0,0 +1,144 @@
+#!/bin/sh
+
+# container-tools - Manage systemd-nspawn containers
+# Copyright (C) 2014-2019 Daniel Baumann <daniel.baumann@open-infrastructure.net>
+#
+# SPDX-License-Identifier: GPL-3.0+
+#
+# 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/>.
+
+set -e
+
+COMMAND="$(basename ${0})"
+
+LOG="/var/log/container-tools/container.log"
+
+Parameters ()
+{
+	GETOPT_LONGOPTIONS="name:,date:,"
+	GETOPT_OPTIONS="n:,d:,"
+
+	PARAMETERS="$(getopt --longoptions ${GETOPT_LONGOPTIONS} --name=${COMMAND} --options ${GETOPT_OPTIONS} --shell sh -- ${@})"
+
+	if [ "${?}" != "0" ]
+	then
+		echo "'${COMMAND}': getopt exit" >&2
+		exit 1
+	fi
+
+	eval set -- "${PARAMETERS}"
+
+	while true
+	do
+		case "${1}" in
+			-d|--date)
+				DATE="${2}"
+				shift 2
+				;;
+
+			-n|--name)
+				NAME="${2}"
+				shift 2
+				;;
+
+			-u|--user)
+				USER="${2}"
+				shift 2
+				;;
+
+			--)
+				shift 1
+				break
+				;;
+
+			*)
+				echo "'${COMMAND}': getopt error" >&2
+				exit 1
+				;;
+		esac
+	done
+}
+
+Usage ()
+{
+	echo "Usage: container ${COMMAND} [-n|--name NAME] [-d|--date DATE|today|today-N|yesterday] [-u|--user USER]" >&2
+	exit 1
+}
+
+Parameters "${@}"
+
+case "${DATE}" in
+	today-*)
+		DAYS="$(echo ${DATE} | awk -F- '{ print $2 }')"
+
+		START="$(date -d "${DAYS} day ago" '+%Y-%m-%d')"
+		END="$(date +%Y-%m-%d)"
+
+		DATE="(${START}"
+
+		while true
+		do
+			DATE="${DATE}|${START}"
+
+			if [ "${START}" = "${END}" ]
+			then
+				break
+			fi
+
+			START="$(date +%Y-%m-%d --date "${START} +1 day")"
+		done
+
+		DATE="${DATE})"
+		;;
+
+	today)
+		DATE="$(date +%Y-%m-%d)"
+		;;
+
+	yesterday)
+		DATE="$(date -d '1 day ago' '+%Y-%m-%d')"
+		;;
+esac
+
+if ls "${LOG}"-*.gz > /dev/null 2>&1
+then
+	LOGS="$(ls ${LOG}-*.gz) ${LOG}"
+else
+	LOGS="${LOG}"
+fi
+
+# FIXME: user
+
+for LOG in ${LOGS}
+do
+	case "${LOG}" in
+		*.gz)
+			GREP="zgrep"
+			;;
+
+		*)
+			GREP="grep"
+			;;
+	esac
+
+	case "${NAME}" in
+		"")
+			${GREP} -E "^${DATE}" "${LOG}" || true
+			;;
+
+		*)
+			${GREP} -E "^${DATE}" "${LOG}" | grep " ${NAME}" || true
+			;;
+	esac
+done
diff --git a/share/bash-completion/container b/share/bash-completion/container
index 4289961..3f1f271 100644
--- a/share/bash-completion/container
+++ b/share/bash-completion/container
@@ -143,6 +143,43 @@ _container()
 			esac
 			;;
 
+		log)
+			case "${prev}" in
+				-d|--date)
+					opts="$(if ls /var/log/container-tools/container.log-*.gz > /dev/null 2>&1;
+						then \
+							zcat /var/log/container-tools/container.log-*.gz | awk '{ print $1 }' | sort -u; \
+						fi; \
+						if [ -e /var/log/container-tools/container.log ]; \
+						then \
+							awk '{ print $1 }' /var/log/container-tools/container.log | sort -u; \
+						fi) \
+						today yesterday"
+					COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
+					return 0
+					;;
+
+				-n|--name)
+					opts="$(if ls /var/log/container-tools/container.log-*.gz > /dev/null 2>&1;
+						then \
+							zgrep -E '(\-n|\-\-name) ' /var/log/container-tools/container.log-*.gz | sed -e 's|.*-n ||' -e 's|.*--name ||' -e 's| .*$||' | sort -u; \
+						fi; \
+						if [ -e /var/log/container-tools/container.log ]; \
+						then \
+							grep -E '(\-n|\-\-name) ' /var/log/container-tools/container.log | sed -e 's|.*-n ||' -e 's|.*--name ||' -e 's| .*$||' | sort -u; \
+						fi)"
+					COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
+					return 0
+					;;
+
+				*)
+					opts="-d --date -n --name"
+					COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
+					return 0
+					;;
+			esac
+			;;
+
 		move|mv)
 			case "${prev}" in
 				-o|--old)
diff --git a/share/man/container-log.1.txt b/share/man/container-log.1.txt
new file mode 100644
index 0000000..ea13f5b
--- /dev/null
+++ b/share/man/container-log.1.txt
@@ -0,0 +1,91 @@
+// container-tools - Manage systemd-nspawn containers
+// Copyright (C) 2014-2019 Daniel Baumann <daniel.baumann@open-infrastructure.net>
+//
+// SPDX-License-Identifier: GPL-3.0+
+//
+// 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/>.
+
+CONTAINER-LOG(1)
+================
+:doctype: manpage
+:man manual: Open Infrastructure
+:man source: container-tools
+:man version: {revnumber}
+
+
+NAME
+----
+container-log - Show container log
+
+
+SYNOPSIS
+--------
+*container log* ['OPTIONS']
+
+
+DESCRIPTION
+-----------
+The container log command shows the container log.
+
+
+OPTIONS
+-------
+The following container options are available:
+
+*-d, --date*::
+	Show only log entries of the specified date as 'YYYY-MM-DD' or a date range like 'today-7'.
+
+*-n, --name*::
+	Show only log entries for the specified container.
+
+EXAMPLES
+--------
+*Show all log entries:*::
+	sudo container log
+
+*Show only log entries of today:*::
+	sudo container log -d today
+
+*Show only log entries of yesterday:*::
+	sudo container log -d yesterday
+
+*Show all log entries of the example.net container:*::
+	sudo container log -n example.net
+
+*Show only log entries of the example.net container of the last 30 days:*::
+	sudo container log -d today-30 -n example.net
+
+
+SEE ALSO
+--------
+container-tools(7),
+container(1).
+
+
+HOMEPAGE
+--------
+More information about container-tools and the Open Infrastructure project can be found on the homepage at https://open-infrastructure.net.
+
+
+CONTACT
+-------
+Bug reports, feature requests, help, patches, support and everything else
+are welcome on the Open Infrastructure Software Mailing List <software@lists.open-infrastructure.net>.
+
+Debian specific bugs can also be reported in the Debian Bug Tracking System at https://bugs.debian.org.
+
+
+AUTHORS
+-------
+container-tools was written by Daniel Baumann <daniel.baumann@open-infrastructure.net> and others.
diff --git a/share/man/container.1.txt b/share/man/container.1.txt
index efe4e3b..7170041 100644
--- a/share/man/container.1.txt
+++ b/share/man/container.1.txt
@@ -85,6 +85,9 @@ The following container commands are available:
 *list*::
 	List container on the system, see container-list(1).
 
+*log*::
+	Show container log, see container-log(1).
+
 *status*::
 	Show container status, see container-status(1).