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https://issues.apache.org/jira/browse/GUACAMOLE-927?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mike Jumper resolved GUACAMOLE-927.
-----------------------------------
Resolution: Fixed
> RDP cannot be used if $HOME is unset
> ------------------------------------
>
> Key: GUACAMOLE-927
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-927
> Project: Guacamole
> Issue Type: Bug
> Components: RDP
> Affects Versions: 1.1.0
> Reporter: Mike Jumper
> Assignee: Mike Jumper
> Priority: Critical
> Fix For: 1.1.0
>
>
> FreeRDP 2.0.0 contains code which automatically attempts to read the user's
> home directory via the {{HOME}} environment variable, regardless of whether
> this value is actually needed (see {{freerdp_settings_new()}}). If the
> {{HOME}} environment variable is unset, this attempt fails, the overall
> FreeRDP initialization process is aborted, and any formerly allocated parts
> of the context are freed.
> For Guacamole, this means that attempts to connect using RDP will segfault if
> the {{HOME}} environment variable is unset for guacd, which can happen in
> practice depending on how guacd is started.
> To reproduce:
> # Create a fresh instance of Ubuntu 18.04
> # Install build dependencies of both FreeRDP and guacamole-server:
> #* {{autoconf}}
> #* {{automake}}
> #* {{cmake}}
> #* {{gcc}}
> #* {{git}}
> #* {{libavcodec-dev}}
> #* {{libavutil-dev}}
> #* {{libcairo2-dev}}
> #* {{libcunit1-dev}}
> #* {{libjpeg-turbo8-dev}}
> #* {{libossp-uuid-dev}}
> #* {{libpango1.0-dev}}
> #* {{libpulse-dev}}
> #* {{libssh2-1-dev}}
> #* {{libssl-dev}}
> #* {{libswscale-dev}}
> #* {{libtelnet-dev}}
> #* {{libtool}}
> #* {{libvncserver-dev}}
> #* {{libwebsockets-dev}}
> #* {{libwebp-dev}}
> #* {{libxcursor-dev}}
> #* {{libxkbfile-dev}}
> #* {{make}}
> # Clone, build and install FreeRDP 2.0.0-rc4 from git:
> ## {{cmake .}}
> ## {{make}}
> ## {{sudo make install}}
> ## {{sudo ldconfig}}
> # Clone, build, and install guacamole-server from the {{staging/1.1.0}}
> branch on git *installing the init.d script, not the systemd unit*:
> ## {{autoreconf -fi}}
> ## {{./configure --with-init-dir=/etc/init.d}}
> ## {{make}}
> ## {{sudo make install}}
> ## {{sudo ldconfig}}
> # Enable guacd using systemd, thus automatically creating a unit which
> invokes the init script: {{sudo systemctl enable guacd}}
> # Start guacd and use it with an instance of the Guacamole webapp to connect
> to an RDP server: {{sudo systemctl start guacd}}
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