commit

README.md

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-# misc_scripts
+# misc-scripts
 
-Some scripts that I use/used for various tasks
+Misc scripts I use/used for various tasks

dhcp-log/README.md

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+# Extract details from DHCP logs
+
+This script extracts the ip address, mac address, and host names from the DHCP server logs on a linux system.  
+Since this was not tested on multiple systems, results can not be guaranteed with your log files, unless they are the the format as the `example.log` in this directory.  
+The regex may need adjustments.  
+Tested on: `Ubuntu 20.04.4`, `isc-dhcpd-4.4.1`

dhcp-log/extract-details.py

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+import re
+
+# This script extracts ip, mac, and hostname from a dhcp server's log file to a csv file.
+# This works only if the log files match the format in the example log file in this directory
+
+def extract_info_from_logs(log_file_list, output_file_path):
+    # Regular expression to match IP address, MAC address, and hostname
+    regex = re.compile(
+        r'\b(?:DHCPACK|DHCPREQUEST|DHCPOFFER)\b.*?on\s+([\d.]+)\s+to\s+([\da-f:]+)(?:\s+\((.*?)\))?'
+    )
+    
+    # A list of (ip, mac, host) data extracted from matched lines
+    extracted_data = []
+
+    for logfile in log_file_list:
+        with open(logfile, 'r') as logfile:
+            for line in logfile:
+                match = regex.search(line)
+                if match:
+                    ip = match.group(1)
+                    mac = match.group(2)
+                    host = match.group(3) if match.group(3) else "Unknown"
+                    data = ip + "," + mac + "," + host  # Customizable as per requirements
+                    if data not in extracted_data:      # Ensure uniqueness
+                        # Add other conditions here as per requirements
+                        extracted_data.append(data)     # Add extratcted data to the list
+
+    # Write the extracted data to the output file
+    with open(output_file_path, 'w') as output_file:
+        output_file.write("IP,MAC,HOST\n")  # Header row
+        output_file.write('\n'.join(extracted_data))    # Data, as row+'\n'
+
+    print(f"Extraction complete. Data written to {output_file_path}.")
+
+logfilelist = ['/var/log/syslog', '/var/log/syslog.1', '/var/log/dhcp.log']      # Specify the list of /path/log_file
+outputfile = 'output.csv'   # Specify the output file /path/name.csv
+
+extract_info_from_logs(logfilelist, outputfile)

ldap_basic/README.md

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+# Basic LDAP operations
+
+These scripts act as shortcuts for frequently used `openldap` commands or operations.  
+
+## Example commands  
+
+It is necessary to understand these basic commands  
+- `ldapsearch`: Search for entries in the directory  
+- `ldapadd`: Add entries to the directory  
+- `ldapmodify`: Modify entries in the directory  
+- `ldapvi`: A program to edit enties using your text-editor  
+
+## Common options  
+
+You will have to modify these fields in the scripts:  
+- `-H`: Host ip-address or url: `ldap://192.12.34.123/`, `ldaps://ldap.example.com/`  
+- `-D`: Bind DN: `cn=ldapadmin,dc=example,dc=com`  
+- `-w`: Bind password: `-wS3cretP4$$w0rd` or `-w S3cretP4$$w0rd`  
+- `-b`: Search base: `dc=example,dc=com`  
+- `-f`: File: The `.ldif` file with the `ldif` data to add or modify an entry  
+
+Usage examples:  
+```bash
+ldapsearch -D cn=ldapadmin,dc=example,dc=com -w Y0ur4dm!nPwd -H ldap://ldap.example.com/ -b dc=example,dc=com uid=tomsawyer
+```  
+```bash
+ldapadd -D cn=ldapadmin,dc=example,dc=com -w Y0ur4dm!nPwd -H ldap://192.12.34.123/ -f testuser.ldif
+```  
+
+## Script usage
+
+[ldapsearch.sh](ldapsearch.sh): Search entry by any attribute  
+```bash
+bash ldapsearch.sh uid=tomsawyer
+```  
+[ldapadd.sh](ldapadd.sh): Add entries from ldif file  
+```bash
+bash ldapadd.sh filename.ldif
+```  
+[ldapmodify.sh](ldapmodify.sh): Modify entries with info from ldif file  
+```bash
+bash ldapmodify.sh filename.ldif
+```  

ldap_basic/ldapadd.sh

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+ldapadd -D cn=ldapadmin,dc=example,dc=com -w Y0ur4dm!nPwd -H ldap://192.12.34.123/ -f $1

ldap_basic/ldapmodify.sh

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+ldapmodify -D cn=ldapadmin,dc=example,dc=com -w Y0ur4dm!nPwd -H ldap://192.12.34.123/ -f $1

ldap_basic/ldapsearch.sh

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+ldapsearch -D cn=ldapadmin,dc=example,dc=com -w Y0ur4dm!nPwd -b dc=example,dc=com $*

randomize-ip-mac/README.md

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+# Randomize IP and mac  
+
+Replace the ip and mac addresses in your text files with random-generated ones. Useful for sharing example log files or asking question on forums.

randomize-ip-mac/randomizeIP.py

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+import re
+import random
+
+def generate_random_ip():
+    return f"{random.randint(0, 255)}.{random.randint(0, 255)}.{random.randint(0, 255)}.{random.randint(0, 255)}"
+
+def replace_ips_in_file(file_path):
+    with open(file_path, 'r') as file:
+        content = file.read()
+
+    # Regular expression to match IP addresses
+    ip_pattern = r'\b(?:\d{1,3}\.){3}\d{1,3}\b'
+    
+    # Replace IPs with random IPs
+    modified_content = re.sub(ip_pattern, lambda _: generate_random_ip(), content)
+
+    with open(file_path, 'w') as file:
+        file.write(modified_content)
+
+if __name__ == "__main__":
+    file_path = 'dhcpcopy.log'  # Change to your file path
+    replace_ips_in_file(file_path)
+    print("IP addresses replaced successfully.")

randomize-ip-mac/randomizeMac.py

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+import re
+import random
+
+def generate_random_mac():
+    # Generate a random MAC address
+    return ':'.join(f"{random.randint(0, 255):02x}" for _ in range(6))
+
+def replace_macs_in_file(file_path):
+    with open(file_path, 'r') as file:
+        content = file.read()
+
+    # Regular expression to match MAC addresses
+    mac_pattern = r'\b(?:[0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}\b'
+    
+    # Replace MACs with random MACs
+    modified_content = re.sub(mac_pattern, lambda _: generate_random_mac(), content)
+
+    with open(file_path, 'w') as file:
+        file.write(modified_content)
+
+if __name__ == "__main__":
+    file_path = 'dhcpcopy.log'  # Change to your file path
+    replace_macs_in_file(file_path)
+    print("MAC addresses replaced successfully.")