mirror of
https://github.com/ShareX/ShareX.git
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460 lines
15 KiB
C#
460 lines
15 KiB
C#
#region License Information (GPL v3)
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/*
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ShareX - A program that allows you to take screenshots and share any file type
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Copyright (c) 2007-2020 ShareX Team
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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Optionally you can also view the license at <http://www.gnu.org/licenses/>.
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*/
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#endregion License Information (GPL v3)
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using Newtonsoft.Json.Linq;
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using ShareX.HelpersLib;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Text.RegularExpressions;
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using System.Windows.Forms;
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using System.Xml.XPath;
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namespace ShareX.UploadersLib
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{
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public class CustomUploaderParser
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{
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public const char SyntaxChar = '$';
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public const char SyntaxParameterChar = '|';
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public const char SyntaxEscapeChar = '\\';
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public bool IsOutput { get; set; }
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public string Filename { get; set; }
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public string Input { get; set; }
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public ResponseInfo ResponseInfo { get; set; }
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public List<Match> RegexMatches { get; set; }
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public bool URLEncode { get; set; } // Only URL encodes filename and input
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public bool JSONEncode { get; set; }
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public bool XMLEncode { get; set; }
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public bool UseNameParser { get; set; }
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public NameParserType NameParserType { get; set; } = NameParserType.Text;
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public bool SkipSyntaxParse { get; set; }
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public List<CustomUploaderSyntaxInfo> SyntaxInfoList { get; private set; }
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public CustomUploaderParser()
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{
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IsOutput = false;
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}
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public CustomUploaderParser(string filename, string input)
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{
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Filename = filename;
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Input = input;
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IsOutput = false;
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}
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public CustomUploaderParser(ResponseInfo responseInfo, List<string> regexList)
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{
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ResponseInfo = responseInfo;
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RegexMatches = new List<Match>();
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if (regexList != null)
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{
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foreach (string regex in regexList)
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{
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Match match = Regex.Match(ResponseInfo.ResponseText, regex);
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RegexMatches.Add(match);
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}
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}
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IsOutput = true;
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}
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public CustomUploaderParser(CustomUploaderInput input) : this(input.Filename, input.Input)
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{
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}
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public string Parse(string text)
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{
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return Parse(text, IsOutput);
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}
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private string Parse(string text, bool isOutput)
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{
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if (string.IsNullOrEmpty(text))
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{
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return "";
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}
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if (UseNameParser)
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{
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NameParser nameParser = new NameParser(NameParserType);
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EscapeHelper escapeHelper = new EscapeHelper();
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escapeHelper.KeepEscapeCharacter = true;
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text = escapeHelper.Parse(text, nameParser.Parse);
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}
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StringBuilder sbResult = new StringBuilder();
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StringBuilder sbSyntax = new StringBuilder();
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bool escapeNext = false;
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bool parsingSyntax = false;
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SyntaxInfoList = new List<CustomUploaderSyntaxInfo>();
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CustomUploaderSyntaxInfo syntaxInfo = null;
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for (int i = 0; i < text.Length; i++)
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{
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if (!escapeNext && text[i] == SyntaxChar)
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{
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if (!parsingSyntax)
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{
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parsingSyntax = true;
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sbSyntax.Clear();
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syntaxInfo = new CustomUploaderSyntaxInfo() { StartPosition = i };
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}
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else
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{
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parsingSyntax = false;
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string syntax = sbSyntax.ToString();
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EndSyntaxInfo(syntaxInfo, i, syntax);
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if (!SkipSyntaxParse && !string.IsNullOrEmpty(syntax))
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{
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string syntaxResult = ParseSyntax(syntax, isOutput);
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if (!string.IsNullOrEmpty(syntaxResult))
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{
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if (JSONEncode)
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{
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syntaxResult = URLHelpers.JSONEncode(syntaxResult);
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}
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else if (XMLEncode)
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{
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syntaxResult = URLHelpers.XMLEncode(syntaxResult);
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}
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sbResult.Append(syntaxResult);
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}
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}
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}
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}
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else if (!escapeNext && text[i] == SyntaxEscapeChar)
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{
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escapeNext = true;
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}
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else
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{
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escapeNext = false;
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if (!parsingSyntax)
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{
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sbResult.Append(text[i]);
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}
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else
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{
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sbSyntax.Append(text[i]);
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}
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}
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}
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if (parsingSyntax)
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{
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string syntax = sbSyntax.ToString();
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EndSyntaxInfo(syntaxInfo, text.Length - 1, syntax);
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}
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return sbResult.ToString();
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}
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private void EndSyntaxInfo(CustomUploaderSyntaxInfo syntaxInfo, int position, string syntax)
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{
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if (syntaxInfo != null)
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{
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syntaxInfo.EndPosition = position;
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syntaxInfo.Text = syntax;
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SyntaxInfoList.Add(syntaxInfo);
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}
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}
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private string ParseSyntax(string syntax, bool isOutput)
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{
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string value;
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if (isOutput)
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{
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if (CheckKeyword(syntax, "response")) // Example: $response$
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{
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return ResponseInfo.ResponseText;
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}
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else if (CheckKeyword(syntax, "responseurl")) // Example: $responseurl$
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{
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return ResponseInfo.ResponseURL;
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}
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else if (CheckKeyword(syntax, "header", out value)) // Example: $header:Location$
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{
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return ParseSyntaxHeader(value);
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}
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else if (CheckKeyword(syntax, "regex", out value)) // Examples: $regex:1$ $regex:1|1$ $regex:1|thumbnail$
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{
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return ParseSyntaxRegex(value);
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}
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else if (CheckKeyword(syntax, "json", out value)) // Example: $json:Files[0].URL$
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{
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return ParseSyntaxJson(value);
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}
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else if (CheckKeyword(syntax, "xml", out value)) // Example: $xml:/Files/File[1]/URL$
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{
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return ParseSyntaxXml(value);
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}
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}
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else
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{
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if (CheckKeyword(syntax, "input")) // Example: $input$
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{
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return AutoEncode(Input);
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}
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}
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if (CheckKeyword(syntax, "filename")) // Example: $filename$
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{
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return AutoEncode(Filename);
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}
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else if (CheckKeyword(syntax, "random", out value)) // Example: $random:domain1.com|domain2.com$
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{
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return ParseSyntaxRandom(value);
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}
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else if (CheckKeyword(syntax, "select", out value)) // Example: $select:domain1.com|domain2.com$
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{
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return ParseSyntaxSelect(value);
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}
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else if (CheckKeyword(syntax, "prompt", out value)) // Examples: $prompt$ $prompt:title$ $prompt:title|default value$
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{
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return ParseSyntaxPrompt(value);
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}
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else if (CheckKeyword(syntax, "base64", out value)) // Example: Basic $base64:username:password$
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{
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return ParseSyntaxBase64(value);
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}
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// Invalid syntax
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return null;
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}
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private string AutoEncode(string text)
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{
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if (URLEncode)
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{
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return URLHelpers.URLEncode(text);
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}
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return text;
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}
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private bool CheckKeyword(string syntax, string keyword)
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{
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return CheckKeyword(syntax, keyword, out _);
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}
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private bool CheckKeyword(string syntax, string keyword, out string value)
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{
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value = null;
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if (syntax.Equals(keyword, StringComparison.InvariantCultureIgnoreCase))
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{
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return true;
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}
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else if (syntax.StartsWith(keyword + ":", StringComparison.InvariantCultureIgnoreCase))
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{
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value = syntax.Substring(keyword.Length + 1);
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return true;
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}
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return false;
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}
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private string ParseSyntaxHeader(string header)
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{
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if (ResponseInfo.Headers != null)
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{
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return ResponseInfo.Headers[header];
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}
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return null;
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}
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private string ParseSyntaxRegex(string syntax)
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{
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if (!string.IsNullOrEmpty(syntax))
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{
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string regexIndexString = "";
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bool isGroupRegex = false;
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int i;
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for (i = 0; i < syntax.Length; i++)
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{
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if (char.IsDigit(syntax[i]))
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{
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regexIndexString += syntax[i];
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}
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else
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{
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if (syntax[i] == SyntaxParameterChar || syntax[i] == ',') // , for backward compatibility
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{
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isGroupRegex = true;
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}
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break;
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}
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}
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if (regexIndexString.Length > 0 && int.TryParse(regexIndexString, out int regexIndex))
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{
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Match match = RegexMatches[regexIndex - 1];
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if (isGroupRegex && i + 1 < syntax.Length)
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{
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string group = syntax.Substring(i + 1);
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if (int.TryParse(group, out int groupNumber))
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{
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return match.Groups[groupNumber].Value;
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}
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return match.Groups[group].Value;
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}
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return match.Value;
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}
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}
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return null;
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}
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// http://goessner.net/articles/JsonPath/
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private string ParseSyntaxJson(string syntaxJsonPath)
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{
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if (!string.IsNullOrEmpty(syntaxJsonPath))
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{
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if (!syntaxJsonPath.StartsWith("$."))
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{
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syntaxJsonPath = "$." + syntaxJsonPath;
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}
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return (string)JToken.Parse(ResponseInfo.ResponseText).SelectToken(syntaxJsonPath);
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}
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return null;
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}
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// http://www.w3schools.com/xsl/xpath_syntax.asp
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// https://msdn.microsoft.com/en-us/library/ms256086(v=vs.110).aspx
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private string ParseSyntaxXml(string syntaxXPath)
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{
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if (!string.IsNullOrEmpty(syntaxXPath))
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{
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using (StringReader sr = new StringReader(ResponseInfo.ResponseText))
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{
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XPathDocument doc = new XPathDocument(sr);
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XPathNavigator nav = doc.CreateNavigator();
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XPathNavigator node = nav.SelectSingleNode(syntaxXPath);
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if (node != null)
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{
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return node.Value;
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}
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}
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}
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return null;
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}
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private string ParseSyntaxRandom(string syntax)
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{
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if (!string.IsNullOrEmpty(syntax))
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{
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string[] values = syntax.Split(SyntaxParameterChar);
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if (values.Length > 0)
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{
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return RandomFast.Pick(values);
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}
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}
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return null;
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}
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private string ParseSyntaxSelect(string syntax)
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{
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if (!string.IsNullOrEmpty(syntax))
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{
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string[] values = syntax.Split(SyntaxParameterChar).Where(x => !string.IsNullOrEmpty(x)).ToArray();
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if (values.Length > 0)
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{
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using (ParserSelectForm form = new ParserSelectForm(values))
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{
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form.ShowDialog();
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return form.SelectedText;
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}
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}
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}
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return null;
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}
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private string ParseSyntaxPrompt(string syntax)
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{
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string title = "ShareX - Prompt", defaultValue = "";
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if (!string.IsNullOrEmpty(syntax))
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{
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if (syntax.Contains(SyntaxParameterChar))
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{
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int index = syntax.IndexOf(SyntaxParameterChar);
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title = syntax.Remove(index);
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defaultValue = syntax.Substring(index + 1);
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}
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else
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{
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title = syntax;
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}
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}
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using (InputBox inputBox = new InputBox(title, defaultValue))
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{
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if (inputBox.ShowDialog() == DialogResult.OK)
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{
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return inputBox.InputText;
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}
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}
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return defaultValue;
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}
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private string ParseSyntaxBase64(string syntax)
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{
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if (!string.IsNullOrEmpty(syntax))
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{
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return TranslatorHelper.TextToBase64(syntax);
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}
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return null;
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}
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}
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} |