Bug 2903

Summary:

ssh-keyscan returns '0' when no keys are found

Product:

Portable OpenSSH

Reporter:

Robert Grizzell <robert>

Component:

ssh-keyscan

Assignee:

Damien Miller <djm>

Status:

CLOSED FIXED

Severity:

normal

CC:

ahmedsayeed1982, djm, dtucker

Priority:

Version:

7.6p1

Hardware:

amd64

OS:

Linux

Bug Depends on:

Bug Blocks:

2915

Attachments:

Description	Flags
exit with status 1 if no keys found	dtucker: ok+

Description Robert Grizzell 2018-09-09 15:44:28 AEST

ssh-keyscan returns with an exit status of '0' when DNS resolution of a domain fails or an SSH connection can't be made. In instances where scripting is involved, this leads to situations where there is no indication that the command completed successfully. Authors are then forced to capture and parse the output in order to test for a successful run.

DNS Resolution:
> ssh-keyscan shouldnotresolve.example
> echo $?
0


No SSH Service:
> ssh-keyscan example.com
> echo $?
0

Comment 1 Damien Miller 2019-01-23 20:32:08 AEDT

Created attachment 3229 [details]
exit with status 1 if no keys found

Comment 2 Damien Miller 2019-01-27 21:54:52 AEDT

This has been committed and will be in openssh-8.0

Comment 3 Damien Miller 2019-10-09 15:11:47 AEDT

Close bugs fixed in openssh-8.1 release cycle

Comment 4 Ahmed Sayeed 2021-10-14 01:43:00 AEDT

[spam removed]