85 lines
3.2 KiB
C#
85 lines
3.2 KiB
C#
using System.Text.RegularExpressions;
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using CaddyManager.Contracts.Caddy;
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namespace CaddyManager.Services.Caddy;
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/// <inheritdoc />
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public partial class CaddyConfigurationParsingService: ICaddyConfigurationParsingService
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{
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/// <summary>
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/// Regex to help parse hostnames from a Caddyfile.
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/// This regex only matches hostname declarations at the beginning of lines (column 1 after optional whitespace)
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/// and excludes nested directives like "reverse_proxy target {".
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/// </summary>
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/// <returns></returns>
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[GeneratedRegex(@"(?m)^([^\s\{\r\n][^\{\r\n]*?)\s*\{", RegexOptions.Multiline)]
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private static partial Regex HostnamesRegex();
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/// <summary>
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/// Regex to help parse hostnames being used in reverse proxy directives.
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/// </summary>
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/// <returns></returns>
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[GeneratedRegex(@"(?m)reverse_proxy\s+([^\s\{\}]+)(?:\s*\{)?", RegexOptions.Multiline)]
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private static partial Regex ReverseProxyRegex();
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/// <inheritdoc />
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public List<string> GetHostnamesFromCaddyfileContent(string caddyfileContent)
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{
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var hostnamesRegex = HostnamesRegex();
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var matches = hostnamesRegex.Matches(caddyfileContent);
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var hostnames = new List<string>();
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foreach (Match match in matches)
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{
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// Split the matched string by commas and trim whitespace
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var splitHostnames = match.Groups[1].Value.Split(',')
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.Select(h => h.Trim())
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.Where(h => !string.IsNullOrWhiteSpace(h))
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.ToList();
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hostnames.AddRange(splitHostnames);
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}
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// Remove duplicates and return the list
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return hostnames.Distinct().ToList();
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}
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/// <inheritdoc />
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public string GetReverseProxyTargetFromCaddyfileContent(string caddyfileContent)
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{
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var reverseProxyRegex = ReverseProxyRegex();
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var match = reverseProxyRegex.Match(caddyfileContent);
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if (!match.Success) return string.Empty;
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// Use the captured group which contains the target (e.g., pikachu:3011)
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var targetPart = match.Groups[1].Value.Trim();
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if (string.IsNullOrEmpty(targetPart)) return string.Empty;
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var targetComponents = targetPart.Split(':');
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if (targetComponents.Length <= 1) return targetPart;
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// Handle cases like http://backend:9000, 192.168.1.100:3000
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return targetComponents[0];
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}
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/// <inheritdoc />
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public List<int> GetReverseProxyPortsFromCaddyfileContent(string caddyfileContent)
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{
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var reverseProxyRegex = ReverseProxyRegex();
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var matches = reverseProxyRegex.Matches(caddyfileContent);
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var results = new List<int>();
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foreach (Match match in matches)
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{
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// Use the captured group which contains the target (e.g., pikachu:3011)
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var targetPart = match.Groups[1].Value.Trim();
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if (string.IsNullOrEmpty(targetPart)) continue;
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var targetComponents = targetPart.Split(':');
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if (targetComponents.Length > 1 && int.TryParse(targetComponents.Last(), out int port))
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{
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results.Add(port);
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}
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}
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return results.Distinct().ToList();
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}
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} |