aboutsummaryrefslogtreecommitdiff
path: root/bin/mailsync
blob: 43d76dea46f1fff8a10704a60468d66d535f8316 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
#!/bin/sh

# - Syncs mail for all accounts, or a single account given as an argument.
# - Displays a notification showing the number of new mails.
# - Displays a notification for each new mail with its subject displayed.
# - Runs notmuch to index new mail.
# - This script can be set up as a cron job for automated mail syncing.

# There are many arbitrary and ugly features in this script because it is
# inherently difficult to pass environmental variables to cronjobs and other
# issues. It also should at least be compatible with Linux (and maybe BSD) with
# Xorg and MacOS as well.

# Run only if not already running in other instance
pgrep mbsync >/dev/null && { echo "mbsync is already running."; exit ;}

# First, we have to get the right variables for the mbsync file, the pass
# archive, notmuch and the GPG home.  This is done by searching common profile
# files for variable assignments. This is ugly, but there are few options that
# will work on the maximum number of machines.
eval "$(grep -h -- \
	"^\s*\(export \)\?\(MBSYNCRC\|MPOPRC\|PASSWORD_STORE_DIR\|PASSWORD_STORE_GPG_OPTS\|NOTMUCH_CONFIG\|GNUPGHOME\|MAILSYNC_MUTE\|XDG_CONFIG_HOME\|XDG_DATA_HOME\)=" \
	"$HOME/.profile" "$HOME/.bash_profile" "$HOME/.zprofile"  "$HOME/.config/zsh/.zprofile" "$HOME/.zshenv" \
	"$HOME/.config/zsh/.zshenv" "$HOME/.bashrc" "$HOME/.zshrc" "$HOME/.config/zsh/.zshrc" \
	"$HOME/.pam_environment" 2>/dev/null)"

# For non-interactive shell (e.g. cron job) run only when the GPG key (in $GNUPGHOME or pass --homedir) is unlocked
tty -s || (echo "dummy" | gpg --sign --batch --pinentry-mode error -o /dev/null > /dev/null 2>&1) || exit

export GPG_TTY="$(tty)"

[ -n "$MBSYNCRC" ] && alias mbsync="mbsync -c $MBSYNCRC" || MBSYNCRC="$HOME/.mbsyncrc"
[ -n "$MPOPRC" ] || MPOPRC="$HOME/.config/mpop/config"

lastrun="${XDG_CONFIG_HOME:-$HOME/.config}/mutt/.mailsynclastrun"

# Settings are different for MacOS (Darwin) systems.
case "$(uname)" in
	Darwin) notify() { osascript -e "display notification \"$2\" with title \"$1\"" ;} ;;
	*)
	case "$(readlink -f /sbin/init)" in
		*systemd*|*openrc*) export DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/$(id -u)/bus ;;
		*dinit*) export DBUS_SESSION_BUS_ADDRESS=$(grep -E -z "DBUS_SESSION_BUS_ADDRESS" "/proc/$(pgrep -x swaybar)/environ" | sed 's/DBUS_SESSION_BUS_ADDRESS=//') ;;
	esac

	notify() {
			notify-send --app-name="mutt-wizard" -- "$1" "$2"
		}
	;;
esac

# Check account for new mail. Notify if there is new content.
syncandnotify() {
	case "$1" in
		imap) mbsync -q "$2" ;;
		pop) mpop -q "$2" ;;
	esac
	new=$(find\
		"$HOME/.local/share/mail/$2/"[Ii][Nn][Bb][Oo][Xx]/new/ \
		"$HOME/.local/share/mail/$2/"[Ii][Nn][Bb][Oo][Xx]/cur/ \
		-type f -newer "$lastrun" 2> /dev/null)
	newcount=$(echo "$new" | sed '/^\s*$/d' | wc -l)
	case 1 in
		$((newcount > 5)) )
			echo "$newcount new mails for $2."
			[ -z "$MAILSYNC_MUTE" ] && notify "New Mail!" "📬 $newcount new mails in \`$2\` account."
			;;
		$((newcount > 0)) )
			echo "$newcount new mail(s) for $2."
			[ -z "$MAILSYNC_MUTE" ] &&
			for file in $new; do
				# Extract and decode subject and sender from mail.
				subject=$(awk '/^Subject: / && ++n == 1,/^.*: / && ++i == 2' "$file" | head -n-1 |
					perl -CS -MEncode -ne 'print decode("MIME-Header", $_)' |
					sed 's/^Subject: //' | tr -d '\n\t')
				from="$(sed -n "/^From:/ s|From: *|| p" "$file" |
					perl -CS -MEncode -ne 'print decode("MIME-Header", $_)')"
				from="${from% *}" ; from="${from%\"}" ; from="${from#\"}"
				notify "📧$from:" "$subject"
			done
			;;
		*) echo "No new mail for $2." ;;
esac
}

allaccounts="$(grep -hs "^\(Channel\|account\)" "$MBSYNCRC" "$MPOPRC")"

# Get accounts to sync. All if no argument. Prefix with `error` if non-existent.
IFS='
'
if [ -z "$1" ]; then
	tosync="$allaccounts"
else
	tosync="$(for arg in "$@"; do for availacc in $allaccounts; do
		[ "$arg" = "${availacc##* }" ] && echo "$availacc" && break
	done || echo "error $arg"; done)"
fi

for account in $tosync; do
	case $account in
		Channel*) syncandnotify imap "${account##* }" & ;;
		account*) syncandnotify pop "${account##* }" & ;;
		error*) echo "ERROR: Account ${account##* } not found." ;;
	esac
done

wait

notmuch new --quiet

pkill -RTMIN+12 "${STATUSBAR:-i3blocks}"
#Create a touch file that indicates the time of the last run of mailsync
touch "$lastrun"