wizard.sh crashes on non systemd-based system

[ghost]

[ec2-user@ip-172-31-27-163 crowdsec]$ uname -a
Linux ip-172-31-27-163 4.14.177-107.254.amzn1.x86_64 #1 SMP Thu May 7 18:30:14 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

System is amazon linux, latest version. The real culprit seems to be the empty configuration file.

The use of wizard.sh -i with all default entries result with:

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x8 pc=0xd87374]

goroutine 1 [running]:
main.initConfig()
	/data/work/crowdsec/cmd/crowdsec-cli/main.go:56 +0x304
github.com/spf13/cobra.(*Command).preRun(0xc0003fe580)
	/home/ec2-user/go/pkg/mod/github.com/spf13/cobra@v0.0.7/command.go:868 +0x49
github.com/spf13/cobra.(*Command).execute(0xc0003fe580, 0xc0003fc540, 0x3, 0x3, 0xc0003fe580, 0xc0003fc540)
	/home/ec2-user/go/pkg/mod/github.com/spf13/cobra@v0.0.7/command.go:804 +0x145
github.com/spf13/cobra.(*Command).ExecuteC(0xc000224580, 0xc0002dbf28, 0x1, 0x1)
	/home/ec2-user/go/pkg/mod/github.com/spf13/cobra@v0.0.7/command.go:943 +0x317
github.com/spf13/cobra.(*Command).Execute(...)
	/home/ec2-user/go/pkg/mod/github.com/spf13/cobra@v0.0.7/command.go:883
main.main()
	/data/work/crowdsec/cmd/crowdsec-cli/main.go:139 +0x93d
[26/05/2020:06:43:06][ERR] crowdsec_wizard: fail to install collection crowdsec/whitelists
[26/05/2020:06:43:08][INF] crowdsec_wizard: Installing patterns
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x8 pc=0xd87374]

goroutine 1 [running]:
main.initConfig()
	/data/work/crowdsec/cmd/crowdsec-cli/main.go:56 +0x304
github.com/spf13/cobra.(*Command).preRun(0xc0003fedc0)
	/home/ec2-user/go/pkg/mod/github.com/spf13/cobra@v0.0.7/command.go:868 +0x49
github.com/spf13/cobra.(*Command).execute(0xc0003fedc0, 0x173b730, 0x0, 0x0, 0xc0003fedc0, 0x173b730)
	/home/ec2-user/go/pkg/mod/github.com/spf13/cobra@v0.0.7/command.go:804 +0x145
github.com/spf13/cobra.(*Command).ExecuteC(0xc000222580, 0xc0002d9f28, 0x1, 0x1)
	/home/ec2-user/go/pkg/mod/github.com/spf13/cobra@v0.0.7/command.go:943 +0x317
github.com/spf13/cobra.(*Command).Execute(...)
	/home/ec2-user/go/pkg/mod/github.com/spf13/cobra@v0.0.7/command.go:883
main.main()
	/data/work/crowdsec/cmd/crowdsec-cli/main.go:139 +0x93d
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x8 pc=0xd87374]

goroutine 1 [running]:
main.initConfig()
	/data/work/crowdsec/cmd/crowdsec-cli/main.go:56 +0x304
github.com/spf13/cobra.(*Command).preRun(0xc000401340)
	/home/ec2-user/go/pkg/mod/github.com/spf13/cobra@v0.0.7/command.go:868 +0x49
github.com/spf13/cobra.(*Command).execute(0xc000401340, 0x173b730, 0x0, 0x0, 0xc000401340, 0x173b730)
	/home/ec2-user/go/pkg/mod/github.com/spf13/cobra@v0.0.7/command.go:804 +0x145
github.com/spf13/cobra.(*Command).ExecuteC(0xc000222580, 0xc0002dbf28, 0x1, 0x1)
	/home/ec2-user/go/pkg/mod/github.com/spf13/cobra@v0.0.7/command.go:943 +0x317
github.com/spf13/cobra.(*Command).Execute(...)
	/home/ec2-user/go/pkg/mod/github.com/spf13/cobra@v0.0.7/command.go:883
main.main()
	/data/work/crowdsec/cmd/crowdsec-cli/main.go:139 +0x93d
[26/05/2020:06:43:08][ERR] crowdsec_wizard: unable to register, skipping crowdsec api registration
[26/05/2020:06:43:08][INF] crowdsec_wizard: Crowdsec api registered
./wizard.sh: ligne462: systemctl : commande introuvable
[26/05/2020:06:43:08][ERR] crowdsec_wizard: unable to start crowdsec. exiting
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x8 pc=0xd87374]

goroutine 1 [running]:
main.initConfig()
	/data/work/crowdsec/cmd/crowdsec-cli/main.go:56 +0x304
github.com/spf13/cobra.(*Command).preRun(0xc0003ff600)
	/home/ec2-user/go/pkg/mod/github.com/spf13/cobra@v0.0.7/command.go:868 +0x49
github.com/spf13/cobra.(*Command).execute(0xc0003ff600, 0x173b730, 0x0, 0x0, 0xc0003ff600, 0x173b730)
	/home/ec2-user/go/pkg/mod/github.com/spf13/cobra@v0.0.7/command.go:804 +0x145
github.com/spf13/cobra.(*Command).ExecuteC(0xc000222580, 0xc0002d9f28, 0x1, 0x1)
	/home/ec2-user/go/pkg/mod/github.com/spf13/cobra@v0.0.7/command.go:943 +0x317
github.com/spf13/cobra.(*Command).Execute(...)
	/home/ec2-user/go/pkg/mod/github.com/spf13/cobra@v0.0.7/command.go:883
main.main()
	/data/work/crowdsec/cmd/crowdsec-cli/main.go:139 +0x93d