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deb/rpm packages: attempt to set the cap_net_bind_service capability

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so the service can bind to privileged ports without running as root us

Signed-off-by: Nicola Murino <nicola.murino@gmail.com>
This commit is contained in:
Nicola Murino 2022-02-28 10:06:39 +01:00
parent b65dae89e8
commit 8a6c2265a4
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GPG key ID: 2F1FB59433D5A8CB
5 changed files with 10 additions and 1 deletions
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2
docs/full-configuration.md
View file

@ -373,6 +373,8 @@ $ getcap /usr/bin/sftpgo
Now you can use privileged ports such as 21, 22, 443 etc.. without running the SFTPGo service as root user. You have to set the `cap_net_bind_service` capability each time you update the `sftpgo` binary.
The "official" deb/rpm packages attempt to set the `cap_net_bind_service` capability in their `postinstall` scripts.
An alternative method is to use `iptables`, for example you run the SFTP service on port `2022` and redirect traffic from port `22` to port `2022`:
```shell

2
pkgs/build.sh
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@ -1,6 +1,6 @@
#!/bin/bash
NFPM_VERSION=2.11.3
NFPM_VERSION=2.14.0
NFPM_ARCH=${NFPM_ARCH:-amd64}
if [ -z ${SFTPGO_VERSION} ]
then

2
pkgs/debian/postinst
View file

@ -35,6 +35,8 @@ if [ "$1" = "configure" ]; then
chmod 750 /srv/sftpgo
fi
# set the cap_net_bind_service capability so the service can bind to privileged ports
setcap cap_net_bind_service=+ep /usr/bin/sftpgo || true
fi
#DEBHELPER#

2
pkgs/scripts/deb/postinstall.sh
View file

@ -35,6 +35,8 @@ if [ "$1" = "configure" ]; then
chmod 750 /srv/sftpgo
fi
# set the cap_net_bind_service capability so the service can bind to privileged ports
setcap cap_net_bind_service=+ep /usr/bin/sftpgo || true
fi
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then

3
pkgs/scripts/rpm/postinstall
View file

@ -32,5 +32,8 @@ if [ -d /var/lib/sftpgo ]; then
/usr/bin/chmod 750 /var/lib/sftpgo
fi
# set the cap_net_bind_service capability so the service can bind to privileged ports
setcap cap_net_bind_service=+ep /usr/bin/sftpgo || :
# reload to pick up any changes to systemd files
/bin/systemctl daemon-reload >/dev/null 2>&1 || :