Gitlab API add SSH-key

Question

I've problems adding an SSH key to my gitlab server trough the API (It works well trough the webpage).

Gitlab information:

I came across this issue (which was fixed here) which was related to an "wrong" openssh implementation. They've fixed this in milestone 7.10. Only thing... My server has openssh 6.6 installed:

OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.3, OpenSSL 1.0.1f 6 Jan 2014

Now, I don't know if that fix is backwards compatible or not, but maybe good to mention.

Also, the logs show no warning or errors or whatsoever. The /tmp/gitlab_key* files are generated on the server:

The problem I'm facing is that gitlab can't create the fingerprint trough the API. This is the responce I get from the API:

{
    "message": {
        "fingerprint": ["cannot be generated"]
    }
}

So right now I have no idea what the problem could be. I've been struggling with this for almost a week now, so I really hope that his problem could be fixed.

-just for the record, here's the script I'm using to add the ssh-key trough the API

#!/bin/bash
 
jsonFile="jsonResponce"
 
echo `curl http://gitserver/api/v3/session --data 'login=****&password=****'` > $jsonFile
userToken=$(jq '.private_token' $jsonFile)
 
finalUserToken=$(echo "$userToken" | tr -d '"')
 
echo "user token: $finalUserToken"
 
# Below key is for testing, will use output of cat ~/.ssh/id_rsa.pub later on
# sshKey="ssh-rsa AAAAB3N***** ****@***.com
 
# curl --data "private_token=$userToken&title=keyName&key=$sshKey" "http://gitserver/api/v3/user/keys"
 
rm $jsonFile

I don't see any errors here, or any question. Can you clarify what you're asking about? — larsks
– larsks, Commented Sep 1, 2015 at 12:56
@larsks hmm, I'm sorry. I've added the error I get. Hope that it's clear? Or do you need more information? — Mathlight
– Mathlight, Commented Sep 1, 2015 at 13:06

Mike Frysinger · Accepted Answer · 2025-09-06 02:16:51Z

7

id_rsa.pub is base64 encoded file, it contains + character

http post with application/x-www-form-urlencoded, need encode it's content preventing + being convert to (space)

try

curl --data-urlencode "key=$key_pub" --data-urlencode "title=$hostname" \
https://gitlabserver/api/v4/user/keys?private_token=$Token

see: this

edited Sep 6 at 2:16

Mike Frysinger

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answered Nov 27, 2015 at 9:57

linarnan

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Sandeep · Accepted Answer · 2016-07-02 21:59:44Z

5

Improving on @Mathlight's answer the following snippet uploads public ssh key to gitlab.com

curl -X POST -F "private_token=${GITLAB_TOKEN}" -F "title=$(hostname)" -F "key=$(cat ~/.ssh/id_rsa.pub)" "https://gitlab.com/api/v3/user/keys"

answered Jul 2, 2016 at 21:59

Sandeep

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1 Comment

secavfr Over a year ago

BTW, updated "https://gitlab.com/api/v4/user/keys" API route works too (is necessary in version >= 15 of GitLab).

Mathlight · Accepted Answer · 2016-06-23 11:59:57Z

3

OP here

In the mean time I've updated the server to version 8.8 and changed the curl code a bit and now it's working like a charm:

curl -X POST -F "private_token=${userToken}" -F "title=${sshName}" -F "key=${sshKey}" "${gitServer}/user/keys"

Just in case anybody needs this in the future...

answered Jun 23, 2016 at 11:59

Mathlight

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