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Connman without any user interaction

Posted on 5/14/2016
UQ ID:386
Technology
Stack Overflow
Original

I'm trying to use Connman to manage the WiFi connection of my embedded system because it handles automagically any type of protection.

In interactive mode it's very simple:

  1. connmanctl
  2. agent on
  3. scan wifi
  4. services
  5. connect
  6. enter password if requested

On my system, the user enters the WiFi credentials (SSID, password) using a remote (web) application. Then I would use this information to setup connman using a script.

The goal is to avoid the user to select which type of protection is going to setup. I mean, most users just enter SSID/password but they don't know if it is a WPA-PSK or WEP connection.

I'm reading throught the documentation, but I'm not sure which is the correct approach:

but as far as I understand I need to specify the type of the security:

Security: The security type of the network. Possible values are 'psk' (WPA/WPA2 PSK), 'ieee8021x' (WPA EAP), 'none' and 'wep'. When not set, the default value is 'ieee8021x' if an EAP type is configured, 'psk' if a passphrase is present and 'none' otherwise.

It seems 'wep' is not handled if the field is omitted.

Here I understand it needs an 'agent' to feed the passphrase, thus I'm afraid I cannot send it programmatically.

Do you have any recommendation about?

Keywords & Tags
connection
wifi
agent
connman
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K2-Think

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MBZUAI-IFM
Qwen2.5-32B
Sep 18, 2025, 01:50 PM

To automate Connman's WiFi connection setup without user interaction, follow these steps using Connman's DBus API:

Approach Overview

  1. Scan for WiFi Networks: Trigger a scan via DBus to discover available networks.
  2. Identify Target Network: Locate the service (network) by SSID and retrieve its security type.
  3. Configure Security Credentials: Set the password (or key) based on ...
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GPT-5

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OpenAI
Sep 2, 2025, 06:56 AM

Short answer: use an agent via the D‑Bus API. It does not have to be interactive. You can implement a tiny, non‑interactive agent that supplies the credentials your web UI collected, and ConnMan will determine the correct security (WEP vs WPA‑PSK vs EAP) from the scanned network.

Details and options:

  • Provisioning file (config-format.txt)
    • Works well if you already know the security type. ...
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Claude 3.7 Sonnet

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Anthropic
Aug 1, 2025, 12:00 AM

Automating Connman WiFi Connections

You have a few options for connecting to WiFi networks programmatically with Connman without requiring users to specify the security type:

Option 1: Create a Custom Agent

Connman's agent interface can be implemented programmatically. This is the most flexible approach:

#!/usr/bin/python3
import dbus
import dbus.service
import dbus.mainloop.gli...
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Claude Opus 4

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Anthropic
Aug 1, 2025, 12:00 AM

You're dealing with a common challenge when trying to automate ConnMan connections without user interaction. Let me provide you with the best approaches to solve this:

Solution 1: Using ConnMan Config Files (Recommended)

Despite your concern about WEP, ConnMan config files can actually handle this automatically in most cases. Here's how:

Create a config file at `/var/lib/connman/wifi.con...

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o4 mini

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Aug 1, 2025, 12:00 AM

ConnMan was explicitly written so that you don’t ever have to drop into an interactive shell to type in a pass‐phrase. You can either drop a little “.config” file in /var/lib/connman (or /etc/connman if you’ve adjusted the prefix) or you can use the D-Bus API to push your SSID + password straight into ConnMan’s internal state and then call Connect(). In both cases no interactive agent call‐backs...

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DeepSeek R1

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DeepSeek
deepseek-ai/DeepSeek-R1
Aug 1, 2025, 12:00 AM
<think> We are given a question about setting up Connman for WiFi without user interaction on an embedded system. The user provides WiFi credentials (SSID and password) via a web application and wants to automate the connection without the user having to specify the security type (WPA-PSK, WEP, etc.). The user has tried interactive mode with `connmanctl` but wants a non-interactive, scriptable sol...
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Gemini 2.5 Pro

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Google
Aug 1, 2025, 12:00 AM

Of course. Here is a detailed, structured answer in the style of Stack Overflow, addressing the user's question and providing a complete solution.


This is a classic problem when automating ConnMan. You've done good research, and your intuition is correct: the D-Bus API is the right way to solve this, and the config file is too static for your needs.

The key misunderstanding is about the "ag...

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o3 Pro

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Aug 1, 2025, 12:00 AM

ConnMan can be driven completely from a script – you do not need an interactive agent as long as you give ConnMan every parameter it needs before you call Connect.
The most convenient way to do that is through the D-Bus API; ConnMan already knows the security mode of every network after it has scanned, so you do not have to ask the user for “WPA or WEP”, you simply read the value that ConnMa...

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o3

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OpenAI
Aug 1, 2025, 12:00 AM

Yes, you can drive ConnMan completely from a program (or a shell script) and never ask the user anything except “SSID” and “password”.
There are two practical ways to do it.


  1. Tell ConnMan over D-Bus

Everything that the interactive tool connmanctl does i...

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