Support empty ruleset/sca directories

[vikman90]

Related issue
Closes #2196

This PR is a port of #2197 by @lod. This replaces chmod on all the SCA policies available (*) with a recursive option (--recursive). This way, we avoid a "No such file or directory" error if the sca folder contains no policy files.

[jotacarma90]

Testing

Vagrant box used: boxomatic/debian-12

Manager

Package:
https://packages-dev.wazuh.com/warehouse/test/4.4/deb/var/wazuh-manager_4.4.5-2197.fix.sca.wildcard.7.7.2023_amd64.deb

Output:

root@debian12manager:/home/vagrant# apt install /vagrant/wazuh-manager_4.4.5-2197.fix.sca.wildcard.7.7.2023_amd64.deb 
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Note, selecting 'wazuh-manager' instead of '/vagrant/wazuh-manager_4.4.5-2197.fix.sca.wildcard.7.7.2023_amd64.deb'
Suggested packages:
  expect
The following NEW packages will be installed:
  wazuh-manager
0 upgraded, 1 newly installed, 0 to remove and 7 not upgraded.
Need to get 0 B/171 MB of archives.
After this operation, 631 MB of additional disk space will be used.
Get:1 /vagrant/wazuh-manager_4.4.5-2197.fix.sca.wildcard.7.7.2023_amd64.deb wazuh-manager amd64 4.4.5-2197.fix.sca.wildcard.7.7.2023 [171 MB]
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
	LANGUAGE = "pt_BR:pt:en",
	LC_ALL = (unset),
	LANG = "es_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
Selecting previously unselected package wazuh-manager.
(Reading database ... 52834 files and directories currently installed.)
Preparing to unpack .../wazuh-manager_4.4.5-2197.fix.sca.wildcard.7.7.2023_amd64.deb ...
Unpacking wazuh-manager (4.4.5-2197.fix.sca.wildcard.7.7.2023) ...
Setting up wazuh-manager (4.4.5-2197.fix.sca.wildcard.7.7.2023) ...

Agent

Package:
https://packages-dev.wazuh.com/warehouse/test/4.4/deb/var/wazuh-agent_4.4.5-2197.fix.sca.wildcard.7.7.2023_amd64.deb

Output:

root@debian12:/home/vagrant# apt install /vagrant/wazuh-agent_4.4.5-2197.fix.sca.wildcard.7.7.2023_amd64.deb 
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Note, selecting 'wazuh-agent' instead of '/vagrant/wazuh-agent_4.4.5-2197.fix.sca.wildcard.7.7.2023_amd64.deb'
The following NEW packages will be installed:
  wazuh-agent
0 upgraded, 1 newly installed, 0 to remove and 7 not upgraded.
Need to get 0 B/8920 kB of archives.
After this operation, 30.2 MB of additional disk space will be used.
Get:1 /vagrant/wazuh-agent_4.4.5-2197.fix.sca.wildcard.7.7.2023_amd64.deb wazuh-agent amd64 4.4.5-2197.fix.sca.wildcard.7.7.2023 [8920 kB]
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
	LANGUAGE = "pt_BR:pt:en",
	LC_ALL = (unset),
	LANG = "es_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
Preconfiguring packages ...
Selecting previously unselected package wazuh-agent.
(Reading database ... 52836 files and directories currently installed.)
Preparing to unpack .../wazuh-agent_4.4.5-2197.fix.sca.wildcard.7.7.2023_amd64.deb ...
Unpacking wazuh-agent (4.4.5-2197.fix.sca.wildcard.7.7.2023) ...
Setting up wazuh-agent (4.4.5-2197.fix.sca.wildcard.7.7.2023) ...

Checking agent logs, we can see how it connects with the manager and all the modules are running normally with the default configuration.

2023/07/07 16:40:02 wazuh-execd: INFO: Started (pid: 7024).
2023/07/07 16:40:03 wazuh-agentd: INFO: (1410): Reading authentication keys file.
2023/07/07 16:40:03 wazuh-agentd: INFO: Using notify time: 10 and max time to reconnect: 60
2023/07/07 16:40:03 wazuh-agentd: INFO: Version detected -> Linux |debian12 |6.1.0-9-amd64 |#1 SMP PREEMPT_DYNAMIC Debian 6.1.27-1 (2023-05-08) |x86_64 [Debian GNU/Linux|debian: 12 (bookworm)] - Wazuh v4.4.5
2023/07/07 16:40:03 wazuh-agentd: INFO: Started (pid: 7035).
2023/07/07 16:40:03 wazuh-agentd: INFO: Using AES as encryption method.
2023/07/07 16:40:03 wazuh-agentd: INFO: Trying to connect to server ([192.168.56.18]:1514/tcp).
2023/07/07 16:40:03 wazuh-agentd: INFO: (4102): Connected to the server ([192.168.56.18]:1514/tcp).
2023/07/07 16:40:04 wazuh-syscheckd: INFO: Started (pid: 7049).
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6003): Monitoring path: '/bin', with options 'size | permissions | owner | group | mtime | inode | hash_md5 | hash_sha1 | hash_sha256 | scheduled'.
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6003): Monitoring path: '/boot', with options 'size | permissions | owner | group | mtime | inode | hash_md5 | hash_sha1 | hash_sha256 | scheduled'.
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6003): Monitoring path: '/etc', with options 'size | permissions | owner | group | mtime | inode | hash_md5 | hash_sha1 | hash_sha256 | scheduled'.
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6003): Monitoring path: '/sbin', with options 'size | permissions | owner | group | mtime | inode | hash_md5 | hash_sha1 | hash_sha256 | scheduled'.
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6003): Monitoring path: '/usr/bin', with options 'size | permissions | owner | group | mtime | inode | hash_md5 | hash_sha1 | hash_sha256 | scheduled'.
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6003): Monitoring path: '/usr/sbin', with options 'size | permissions | owner | group | mtime | inode | hash_md5 | hash_sha1 | hash_sha256 | scheduled'.
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6206): Ignore 'file' entry '/etc/mtab'
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6206): Ignore 'file' entry '/etc/hosts.deny'
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6206): Ignore 'file' entry '/etc/mail/statistics'
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6206): Ignore 'file' entry '/etc/random-seed'
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6206): Ignore 'file' entry '/etc/random.seed'
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6206): Ignore 'file' entry '/etc/adjtime'
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6206): Ignore 'file' entry '/etc/httpd/logs'
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6206): Ignore 'file' entry '/etc/utmpx'
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6206): Ignore 'file' entry '/etc/wtmpx'
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6206): Ignore 'file' entry '/etc/cups/certs'
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6206): Ignore 'file' entry '/etc/dumpdates'
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6206): Ignore 'file' entry '/etc/svc/volatile'
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6207): Ignore 'file' sregex '.log$|.swp$'
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6004): No diff for file: '/etc/ssl/private.key'
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6000): Starting daemon...
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6010): File integrity monitoring scan frequency: 43200 seconds
2023/07/07 16:40:04 rootcheck: INFO: Starting rootcheck scan.
2023/07/07 16:40:04 wazuh-syscheckd: INFO: (6008): File integrity monitoring scan started.
2023/07/07 16:40:05 wazuh-logcollector: INFO: Monitoring output of command(360): df -P
2023/07/07 16:40:05 wazuh-logcollector: INFO: Monitoring full output of command(360): netstat -tulpn | sed 's/\([[:alnum:]]\+\)\ \+[[:digit:]]\+\ \+[[:digit:]]\+\ \+\(.*\):\([[:digit:]]*\)\ \+\([0-9\.\:\*]\+\).\+\ \([[:digit:]]*\/[[:alnum:]\-]*\).*/\1 \2 == \3 == \4 \5/' | sort -k 4 -g | sed 's/ == \(.*\) ==/:\1/' | sed 1,2d
2023/07/07 16:40:05 wazuh-logcollector: INFO: Monitoring full output of command(360): last -n 20
2023/07/07 16:40:05 wazuh-logcollector: INFO: (1950): Analyzing file: '/var/ossec/logs/active-responses.log'.
2023/07/07 16:40:05 wazuh-logcollector: INFO: (1950): Analyzing file: '/var/log/dpkg.log'.
2023/07/07 16:40:05 wazuh-logcollector: INFO: Started (pid: 7067).
2023/07/07 16:40:05 wazuh-syscheckd: INFO: (6009): File integrity monitoring scan ended.
2023/07/07 16:40:06 wazuh-modulesd: INFO: Started (pid: 7120).
2023/07/07 16:40:06 sca: INFO: Module started.
2023/07/07 16:40:06 sca: INFO: No policies defined. Exiting.
2023/07/07 16:40:06 wazuh-modulesd:control: INFO: Starting control thread.
2023/07/07 16:40:06 wazuh-modulesd:agent-upgrade: INFO: (8153): Module Agent Upgrade started.
2023/07/07 16:40:06 wazuh-modulesd:ciscat: INFO: Module disabled. Exiting...
2023/07/07 16:40:06 wazuh-modulesd:osquery: INFO: Module disabled. Exiting...
2023/07/07 16:40:06 wazuh-modulesd:syscollector: INFO: Module started.
2023/07/07 16:40:06 wazuh-modulesd:syscollector: INFO: Starting evaluation.
2023/07/07 16:40:06 wazuh-modulesd:syscollector: INFO: Evaluation finished.
2023/07/07 16:40:19 rootcheck: INFO: Ending rootcheck scan.