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Bugfix: don't decrease trustLevel when receiving messages
[signal-cli] / README.md
1 # signal-cli
2
3 signal-cli is a commandline interface for [libsignal-service-java](https://github.com/WhisperSystems/libsignal-service-java). It supports registering, verifying, sending and receiving messages. To be able to receiving messages signal-cli uses a [patched libsignal-service-java](https://github.com/AsamK/libsignal-service-java), because libsignal-service-java [does not yet support registering for the websocket support](https://github.com/WhisperSystems/libsignal-service-java/pull/5) nor [provisioning as a slave device](https://github.com/WhisperSystems/libsignal-service-java/pull/21). For registering you need a phone number where you can receive SMS or incoming calls.
4 It is primarily intended to be used on servers to notify admins of important events. For this use-case, it has a dbus interface, that can be used to send messages from any programming language that has dbus bindings.
5
6 ## Installation
7
8 You can [build signal-cli](#building) yourself, or use the [provided binary files](https://github.com/AsamK/signal-cli/releases/latest), which should work on Linux, macOS and Windows. For Arch Linux there is also a [package in AUR](https://aur.archlinux.org/packages/signal-cli/). You need to have at least JRE 7 installed, to run signal-cli.
9
10 ### Install system-wide on Linux
11 ```sh
12 export VERSION=<latest version, e.g. "0.4.0">
13 wget https://github.com/AsamK/signal-cli/releases/download/v"${VERSION}"/signal-cli-"${VERSION}".tar.gz
14 sudo tar xf signal-cli-"${VERSION}".tar.gz -C /opt
15 sudo ln -sf /opt/signal-cli-"${VERSION}"/bin/signal-cli /usr/local/bin/
16 ```
17
18 ## Usage
19
20 usage: signal-cli [-h] [-v] [--config CONFIG] [-u USERNAME | --dbus | --dbus-system] {link,addDevice,listDevices,removeDevice,register,verify,send,quitGroup,updateGroup,receive,daemon} ...
21
22 * Register a number (with SMS verification)
23
24 signal-cli -u USERNAME register
25
26 * Register a number (with voice verification)
27
28 signal-cli -u USERNAME register -v
29
30 * Verify the number using the code received via SMS or voice
31
32 signal-cli -u USERNAME verify CODE
33
34 * Send a message to one or more recipients
35
36 signal-cli -u USERNAME send -m "This is a message" [RECIPIENT [RECIPIENT ...]] [-a [ATTACHMENT [ATTACHMENT ...]]]
37
38 * Pipe the message content from another process.
39
40 uname -a | signal-cli -u USERNAME send [RECIPIENT [RECIPIENT ...]]
41
42 * Receive messages
43
44 signal-cli -u USERNAME receive
45
46 * Groups
47
48 * Create a group
49
50 signal-cli -u USERNAME updateGroup -n "Group name" -m [MEMBER [MEMBER ...]]
51
52 * Update a group
53
54 signal-cli -u USERNAME updateGroup -g GROUP_ID -n "New group name" -a "AVATAR_IMAGE_FILE"
55
56 * Add member to a group
57
58 signal-cli -u USERNAME updateGroup -g GROUP_ID -m "NEW_MEMBER"
59
60 * Leave a group
61
62 signal-cli -u USERNAME quitGroup -g GROUP_ID
63
64 * Send a message to a group
65
66 signal-cli -u USERNAME send -m "This is a message" -g GROUP_ID
67
68 * Linking other devices (Provisioning)
69
70 * Connect to another device
71
72 signal-cli link -n "optional device name"
73
74 This shows a "tsdevice:/…" link, if you want to connect to another signal-cli instance, you can just use this link. If you want to link to and Android device, create a QR code with the link (e.g. with [qrencode](https://fukuchi.org/works/qrencode/)) and scan that in the Signal Android app.
75
76 * Add another device
77
78 signal-cli -u USERNAME addDevice --uri "tsdevice:/…"
79
80 The "tsdevice:/…" link is the one shown by the new signal-cli instance or contained in the QR code shown in Signal-Desktop or similar apps.
81 Only the master device (that was registered directly, not linked) can add new devices.
82
83 * Manage linked devices
84
85 signal-cli -u USERNAME listDevices
86
87 signal-cli -u USERNAME removeDevice -d DEVICE_ID
88
89 ## DBus service
90
91 signal-cli can run in daemon mode and provides an experimental dbus interface.
92 For dbus support you need jni/unix-java.so installed on your system (Debian: libunixsocket-java ArchLinux: libmatthew-unix-java (AUR)).
93
94 * Run in daemon mode (dbus session bus)
95
96 signal-cli -u USERNAME daemon
97
98 * Send a message via dbus
99
100 signal-cli --dbus send -m "Message" [RECIPIENT [RECIPIENT ...]] [-a [ATTACHMENT [ATTACHMENT ...]]]
101
102 ### System bus
103
104 To run on the system bus you need to take some additional steps.
105 It’s advisable to run signal-cli as a separate unix user, the following steps assume you created a user named *signal-cli*.
106 These steps, executed as root, should work on all distributions using systemd.
107
108 ```bash
109 cp data/org.asamk.Signal.conf /etc/dbus-1/system.d/
110 cp data/org.asamk.Signal.service /usr/share/dbus-1/system-services/
111 cp data/signal.service /etc/systemd/system/
112 sed -i -e "s|%dir%|<INSERT_INSTALL_PATH>|" -e "s|%number%|<INSERT_YOUR_NUMBER>|" /etc/systemd/system/signal.service
113 systemctl daemon-reload
114 systemctl enable signal.service
115 systemctl reload dbus.service
116 ```
117
118 Then just execute the send command from above, the service will be autostarted by dbus the first time it is requested.
119
120 ## Storage
121
122 The password and cryptographic keys are created when registering and stored in the current users home directory:
123
124 $HOME/.config/signal/data/
125
126 For legacy users, the old config directory is used as a fallback:
127
128 $HOME/.config/textsecure/data/
129
130 ## Building
131
132 This project uses [Gradle](http://gradle.org) for building and maintaining
133 dependencies. If you have a recent gradle version installed, you can replace `./gradlew` with `gradle` in the following steps.
134
135 1. Checkout the source somewhere on your filesystem with
136
137 git clone https://github.com/AsamK/signal-cli.git
138
139 2. Execute Gradle:
140
141 ./gradlew build
142
143 3. Create shell wrapper in *build/install/signal-cli/bin*:
144
145 ./gradlew installDist
146
147 4. Create tar file in *build/distributions*:
148
149 ./gradlew distTar
150
151 ## Troubleshooting
152 If you use a version of the Oracle JRE and get an InvalidKeyException you need to enable unlimited strength crypto. See https://stackoverflow.com/questions/6481627/java-security-illegal-key-size-or-default-parameters for instructions.
153
154 ## License
155
156 This project uses libsignal-service-java from Open Whisper Systems:
157
158 https://github.com/WhisperSystems/libsignal-service-java
159
160 Licensed under the GPLv3: http://www.gnu.org/licenses/gpl-3.0.html