utils/README.md

# utils

Small tools needed to solve immediate tasks independently or as part of a project

* [check.business.ru_monitor](/check.business.ru_monitor)
* [`build-python`.sh](https://git.hmp.today/pavel.muhortov/utils#build-pythonsh)
* [`cert-info`.sh](https://git.hmp.today/pavel.muhortov/utils#cert-infosh)
* [`ds18b20-over-ssh`.sh](https://git.hmp.today/pavel.muhortov/utils#ds18b20-over-sshsh)
* [`sendmail`.py](https://git.hmp.today/pavel.muhortov/utils#sendmailpy)
* [`simplewc`.py](https://git.hmp.today/pavel.muhortov/utils#simplewcpy)

____

## `build-python`.sh

**Description:**  
> Building Python from sources.  

**Dependencies:**  
>
> * [bash](https://www.gnu.org/software/bash/) (tested versions: 5.1.4 on [Debian GNU/Linux 11](http://ftp.debian.org/debian/dists/bullseye/), 5.0.17 on [Ubuntu 20](https://wiki.ubuntu.com/FocalFossa/ReleaseNotes), 4.2.46 on [CentOS 7](https://wiki.centos.org/Manuals/ReleaseNotes/CentOS7.2009))

|  POSITION | PARAMETERS   |       DESCRIPTION      |    DEFAULT    |
|-----------|--------------|------------------------|---------------|
|     1     |**[qn]**|execution without pauses||
|     2     |**[version]**|version of Python|`3.9.5`|
|     3     |**[path/to/log]**|path to log|`/dev/null`|

### `Example usage build-python.sh in terminal with make the script executable`

```bash
wget https://git.hmp.today/pavel.muhortov/utils/raw/branch/master/build-python.sh
chmod u+x ./build-python.sh
sudo ./build-python.sh - 3.9.5
```

### `Example usage build-python.sh in terminal without download`

```bash
sudo su - -c "bash <(curl -s https://git.hmp.today/pavel.muhortov/utils/raw/branch/master/build-python.sh) qn 3.9.5 install-python.log"
```

____

## `cert-info`.sh

**Description:**  
> Get certificate info.  

**Dependencies:**  
>
> * [bash](https://www.gnu.org/software/bash/) (tested versions: 4.2.46 on [CentOS 7](https://wiki.centos.org/Manuals/ReleaseNotes/CentOS7.2009))
> * [openssl](https://www.openssl.org/) (tested version 1.0.2k on [CentOS 7](https://wiki.centos.org/Manuals/ReleaseNotes/CentOS7.2009))

|  POSITION | PARAMETERS   |       DESCRIPTION      |    DEFAULT    |
|-----------|--------------|------------------------|---------------|
|     1     |**[hostname:port \| /path/to/cert]**|certificate location||
|     2     |**[-e]**|print of the expired date timestamp||
|     2     |**[-f]**|print of the fingerprint||
|     2     |**[-r]**|print of the remaining days||

### `Example usage cert-info.sh in terminal with make the script executable`

```bash
# download
sudo wget https://git.hmp.today/pavel.muhortov/utils/raw/branch/master/cert-info.sh -O /usr/local/bin/cert-info.sh
sudo chmod +x /usr/local/bin/cert-info.sh
# check cert
cert-info.sh www.hmp.today
cert-info.sh /etc/ssl/certs/ca-certificates.crt
```

### `Example usage cert-info.sh in terminal without download`

```bash
bash <(curl -s https://git.hmp.today/pavel.muhortov/utils/raw/branch/master/cert-info.sh) www.hmp.today
bash <(wget -qO- https://git.hmp.today/pavel.muhortov/utils/raw/branch/master/cert-info.sh) www.hmp.today
```

### `Example usage cert-info.sh in Zabbix`

```bash
# download
sudo wget https://git.hmp.today/pavel.muhortov/utils/raw/branch/master/cert-info.sh -O /usr/lib/zabbix/externalscripts/cert-info.sh
sudo chmod +x /usr/lib/zabbix/externalscripts/cert-info.sh
```

`Zabbix Server` - `Administration` - `Scripts` - `Create scripts`
| PARAMETER |     VALUE    |
|-----------|--------------|
|Name       |Check SSL certificate|
|Scope      |Manual host action|
|Type       |Script|
|Execute on |Zabbix server (proxy)|
|Commands   |/usr/lib/zabbix/externalscripts/cert-info.sh {$URL}|
|Description|Load certificate info from {$URL} host macro|

`Zabbix Server` - `Configuration` - `Hosts` - `"hostname"` - `Macros` - `Add`
| MACRO |     VALUE    |
|-------|--------------|
|{$URL} |hostname:port |

`Zabbix Server` - `Monitoring` - `Hosts` - `"hostname"` - `Check SSL certificate`

____

## `ds18b20-over-ssh`.sh

**Description:**  
> Get ds18b20 sensor value.  

**Dependencies:**  
>
> * [bash](https://www.gnu.org/software/bash/) (tested versions: 5.1.16 on [Ubuntu 22.04](https://wiki.ubuntu.com/JammyJellyfish/ReleaseNotes))
> * [sshpass](https://sourceforge.net/projects/sshpass/) (tested version 1.0.9 on [Ubuntu 22.04](https://wiki.ubuntu.com/JammyJellyfish/ReleaseNotes))

|  POSITION | PARAMETERS   |       DESCRIPTION      |    DEFAULT    |
|-----------|--------------|------------------------|---------------|
|     1     |**[host]**|ssh host|**REQUIRED**|
|     2     |**[port]**|ssh port|**REQUIRED**|
|     3     |**[user]**|ssh username|**REQUIRED**|
|     4     |**[pass]**|ssh password|**REQUIRED**|
|     5     |**[node]**|ds18b20 node|**REQUIRED**|

### `Example usage ds18b20-over-ssh.sh in terminal with make the script executable`

```bash
# download
sudo wget https://git.hmp.today/pavel.muhortov/utils/raw/branch/master/ds18b20-over-ssh.sh -O /usr/local/bin/ds18b20-over-ssh.sh
sudo chmod +x /usr/local/bin/ds18b20-over-ssh.sh
# check ds18b20 value
ds18b20-over-ssh.sh host.domain.zone 22 root password 28-0a1b2c3d4e5f
```

### `Example usage ds18b20-over-ssh.sh in terminal without download`

```bash
bash <(curl -s https://git.hmp.today/pavel.muhortov/utils/raw/branch/master/ds18b20-over-ssh.sh) host.domain.zone 22 root password 28-0a1b2c3d4e5f
bash <(wget -qO- https://git.hmp.today/pavel.muhortov/utils/raw/branch/master/ds18b20-over-ssh.sh) host.domain.zone 22 root password 28-0a1b2c3d4e5f
```

### `Example usage ds18b20-over-ssh.sh in Zabbix`

```bash
# download
sudo wget https://git.hmp.today/pavel.muhortov/utils/raw/branch/master/ds18b20-over-ssh.sh -O /usr/lib/zabbix/externalscripts/ds18b20-over-ssh.sh
sudo chmod +x /usr/lib/zabbix/externalscripts/ds18b20-over-ssh.sh
```

`Zabbix Server` - `Administration` - `Scripts` - `Create scripts`
| PARAMETER |     VALUE    |
|-----------|--------------|
|Name       |Check ds18b20 over SSH|
|Scope      |Manual host action|
|Type       |Script|
|Execute on |Zabbix server (proxy)|
|Commands   |/usr/lib/zabbix/externalscripts/ds18b20-over-ssh.sh {$HOST} {$PORT} {$USER} {$PASS} {$NODE}|
|Description|Get temperature from {$NODE} sensor over SSH|

`Zabbix Server` - `Configuration` - `Hosts` - `"hostname"` - `Macros` - `Add`
| MACRO |       VALUE     |
|-------|-----------------|
|{$HOST}|host.domain.zone |
|{$PORT}|22               |
|{$USER}|root             |
|{$PASS}|password         |
|{$NODE}|28-0a1b2c3d4e5f  |

`Zabbix Server` - `Monitoring` - `Hosts` - `"hostname"` - `Check ds18b20 over SSH`

____

## `sendmail`.py

**Description:**  
> Sending email from Python.  

**Dependencies:**  
>
> * [Python 3](https://www.python.org/downloads/) (tested version 3.9.5 on [Debian GNU/Linux 11](http://ftp.debian.org/debian/dists/bullseye/))

|  PARAMETERS | DESCRIPTION | DEFAULT|
|-------------|-------------|--------|
|**-u**, **--user**|smtp valid user|**REQUIRED**|
|**-p**, **--pass**|smtp valid password|**REQUIRED**|
|**-d**, **--dest**|destination addresses|**REQUIRED**|
|**[-h]**|print help and exit||
|**[--smtp]**|smtp hostname or ip address|smtp.gmail.com|
|**[--port]**|smtp port number|587|
|**[--stls]**|smtp required TLS|`True`|
|**[--from]**|mail from alias|**--user** value|
|**[--subj]**|mail subject|'no subject'|
|**[--text]**|mail body text|'no text'|
|**[--type]**|mail body type: plain, html|plain|
|**[--file]**|mail attachment files|`None`|
|**[--time]**|minutes of attempts to send|3|

### `Example usage sendmail.py in terminal with make the script executable`

```bash
# download
sudo wget https://git.hmp.today/pavel.muhortov/utils/raw/branch/master/sendmail.py -O /usr/local/bin/sendmail.py
sudo chmod +x /usr/local/bin/sendmail.py
```

```bash
# example 1
sendmail.py -u user@gmail.com -p password -d addr1@gmail.com,addr2@gmail.com
```

```bash
# example 2
/usr/local/opt/python-3.9/bin/python3.9 /usr/local/bin/sendmail.py -u user@gmail.com -p password -d addr1@gmail.com,addr2@gmail.com --file "/path/to/file1,/path/to/file2"
```

### `Example usage sendmail.py in terminal without download`

```bash
python3 <(curl -s https://git.hmp.today/pavel.muhortov/utils/raw/branch/master/sendmail.py) \
    --user user@gmail.com \
    --pass password \
    --dest addr1@gmail.com,addr2@gmail.com \
    --subj "test subject" \
    --text "test body" \
    --file "/path/to/file1,/path/to/file2"
```

### `Example usage sendmail.py in Python`

```Python
from sendmail import Mail

msg = Mail(smtp_user='user@gmail.com', smtp_pass='password', mail_dest='addr1@gmail.com,addr2@gmail.com')
log = msg.send()
print(log)
```

____

## `simplewc`.py

**Description:**  
> Update Let's Encrypt wildcard certificate with DNS-01 challenge.  

**Dependencies:**  
>
> * [Python 3](https://www.python.org/downloads/) (tested version 3.9.5 on [Debian GNU/Linux 11](http://ftp.debian.org/debian/dists/bullseye/))
> * installed or downloaded [acme.sh](https://github.com/Neilpang/acme.sh)
> * installed [dnspython](https://github.com/rthalley/dnspython) package
> * dns is supported to [dynamic update](https://en.wikipedia.org/wiki/Dynamic_DNS)

|  PARAMETERS | DESCRIPTION | DEFAULT|
|-------------|-------------|--------|
|**--domain**|domain for which the wildcard certificate is issued|**REQUIRED**|
|**--server**|master server containing the domain zone|**REQUIRED**|
|**--keyname**|name of the key to update the zone|**REQUIRED**|
|**--keydata**|content of the key to update the zone|**REQUIRED**|
|**[-h]**|print help and exit||
|**[--acmepath]**|alternative path to bin (example: ~/.acme.sh/acme.sh)|`None`|
|**[--force]**|"force" argument for the acme.sh|`False`|
|**[--test]**|"test" argument for the acme.sh|`False`|

### `Example usage simplewc.py in cron with Python`

```bash
# at 00:00 on Monday
0 0 * * 1 /usr/bin/python3 ~/simplewc.py --domain EXAMPLE.COM --server 8.8.8.8 --keyname KEY --keydata YOU_KEY_CONTENT > /dev/null
# 00:00 on day-of-month 1 and 15
0 0 1,15 * * /usr/bin/python3 ~/simplewc.py --domain EXAMPLE.COM --server dyn.dns.he.net --keyname - --keydata YOU_DDNSKEY > /dev/null

```

### `Example usage simplewc.py in terminal with make the script executable`

```bash
chmod u+x ./simplewc.py
./simplewc.py --domain EXAMPLE.COM --server 8.8.8.8 --keyname KEY --keydata YOU_KEY_CONTENT --test --force
./simplewc.py --domain EXAMPLE.COM --server dyn.dns.he.net --keyname - --keydata YOU_DDNSKEY --test --force
```