mail page imap connection mime
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@ -41,62 +41,171 @@ interface Email {
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category: string;
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}
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// Improved MIME decoding function for all emails
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const decodeMimeContent = (content: string): string => {
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// MIME Decoder Implementation
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function decodeMIME(text: string, encoding?: string, charset: string = 'utf-8'): string {
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if (!text) return '';
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encoding = (encoding || '').toLowerCase();
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charset = (charset || 'utf-8').toLowerCase();
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try {
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// Handle forwarded message headers specially
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if (content.includes('-------- Forwarded message ----------')) {
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const parts: string[] = content.split('-------- Forwarded message ----------');
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if (parts.length > 1) {
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// Clean the forwarded headers section
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const headers = parts[1].split('\n')
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.filter(line => line.trim())
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.map(line => line.replace(/=\n/g, ''))
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.map(line => line.replace(/=([0-9A-F]{2})/g, (_, hex) => String.fromCharCode(parseInt(hex, 16))))
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.join('\n');
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// Clean the message body
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const messageBody = parts[1].split('\n\n').slice(1).join('\n\n')
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.replace(/^This is a multi-part message.*?charset="utf-8"/s, '')
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.replace(/---InfomaniakPhpMail.*?Content-Transfer-Encoding:.*?\n/g, '')
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.replace(/Content-Type:.*?\n/g, '')
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.replace(/Content-Transfer-Encoding:.*?\n/g, '')
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.replace(/=C2=A0/g, ' ') // non-breaking space
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.replace(/=E2=80=(93|94)/g, '-') // dashes
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.replace(/=\n/g, '') // soft line breaks
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.replace(/=([0-9A-F]{2})/g, (_, hex) => String.fromCharCode(parseInt(hex, 16)))
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.replace(/\[IMG:(.*?)\]/g, '') // remove image placeholders
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.replace(/\[ ?LINK: ([^\]]+?) ?\]/g, '$1') // clean up links
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.replace(/\*(.*?)\*/g, '$1') // remove asterisk formatting
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.replace(/\n{3,}/g, '\n\n') // reduce multiple line breaks
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.replace(/^\s+|\s+$/gm, '') // trim each line
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.trim();
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return `-------- Forwarded message ----------\n${headers}\n\n${messageBody}`;
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}
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if (encoding === 'quoted-printable') {
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return decodeQuotedPrintable(text, charset);
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} else if (encoding === 'base64') {
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return decodeBase64(text, charset);
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} else {
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return text;
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}
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// Regular email content cleaning
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return content
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.replace(/^This is a multi-part message.*?charset="utf-8"/s, '')
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.replace(/---InfomaniakPhpMail.*?Content-Transfer-Encoding:.*?\n/g, '')
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.replace(/Content-Type:.*?\n/g, '')
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.replace(/Content-Transfer-Encoding:.*?\n/g, '')
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.replace(/=C2=A0/g, ' ') // non-breaking space
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.replace(/=E2=80=(93|94)/g, '-') // dashes
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.replace(/=\n/g, '') // soft line breaks
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.replace(/=([0-9A-F]{2})/g, (_, hex) => String.fromCharCode(parseInt(hex, 16)))
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.replace(/\[IMG:(.*?)\]/g, '') // remove image placeholders
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.replace(/\[ ?LINK: ([^\]]+?) ?\]/g, '$1') // clean up links
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.replace(/\*(.*?)\*/g, '$1') // remove asterisk formatting
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.replace(/\n{3,}/g, '\n\n') // reduce multiple line breaks
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.replace(/^\s+|\s+$/gm, '') // trim each line
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.trim();
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} catch (error) {
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console.error('Error decoding MIME content:', error);
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console.error('Error decoding MIME:', error);
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return text;
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}
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}
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function decodeQuotedPrintable(text: string, charset: string): string {
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let decoded = text.replace(/=(?:\r\n|\n)/g, '');
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decoded = decoded.replace(/=([0-9A-F]{2})/gi, (match, p1) => {
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return String.fromCharCode(parseInt(p1, 16));
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});
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if (charset !== 'utf-8' && typeof window !== 'undefined' && typeof TextDecoder !== 'undefined') {
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try {
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const bytes = new Uint8Array(decoded.length);
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for (let i = 0; i < decoded.length; i++) {
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bytes[i] = decoded.charCodeAt(i);
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}
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return new TextDecoder(charset).decode(bytes);
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} catch (e) {
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console.error('Charset decoding error:', e);
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return decoded;
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}
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}
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return decoded;
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}
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function decodeBase64(text: string, charset: string): string {
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const cleanText = text.replace(/\s/g, '');
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try {
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const binary = atob(cleanText);
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if (charset !== 'utf-8' && typeof TextDecoder !== 'undefined') {
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const bytes = new Uint8Array(binary.length);
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for (let i = 0; i < binary.length; i++) {
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bytes[i] = binary.charCodeAt(i);
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}
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return new TextDecoder(charset).decode(bytes);
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}
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return binary;
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} catch (e) {
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console.error('Base64 decoding error:', e);
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return text;
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}
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}
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function parseEmailHeaders(headers: string): { contentType: string; encoding: string; charset: string } {
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const result = {
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contentType: 'text/plain',
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encoding: 'quoted-printable',
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charset: 'utf-8'
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};
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const contentTypeMatch = headers.match(/Content-Type:\s*([^;]+)(?:;\s*charset=([^;]+))?/i);
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if (contentTypeMatch) {
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result.contentType = contentTypeMatch[1].trim().toLowerCase();
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if (contentTypeMatch[2]) {
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result.charset = contentTypeMatch[2].trim().replace(/"/g, '').toLowerCase();
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}
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}
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const encodingMatch = headers.match(/Content-Transfer-Encoding:\s*([^\s]+)/i);
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if (encodingMatch) {
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result.encoding = encodingMatch[1].trim().toLowerCase();
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}
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return result;
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}
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function decodeEmail(emailRaw: string): { contentType: string; charset: string; encoding: string; decodedBody: string; headers: string } {
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const parts = emailRaw.split(/\r?\n\r?\n/);
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const headers = parts[0];
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const body = parts.slice(1).join('\n\n');
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const { contentType, encoding, charset } = parseEmailHeaders(headers);
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const decodedBody = decodeMIME(body, encoding, charset);
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return {
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contentType,
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charset,
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encoding,
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decodedBody,
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headers
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};
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}
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function processMultipartEmail(emailRaw: string, boundary: string): { text: string; html: string; attachments: Array<{ contentType: string; content: string }> } {
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const result = {
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text: '',
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html: '',
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attachments: []
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};
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const boundaryRegex = new RegExp(`--${boundary}\\r?\\n|--${boundary}--\\r?\\n?`, 'g');
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const parts = emailRaw.split(boundaryRegex).filter(part => part.trim());
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parts.forEach(part => {
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const decoded = decodeEmail(part);
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if (decoded.contentType === 'text/plain') {
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result.text = decoded.decodedBody;
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} else if (decoded.contentType === 'text/html') {
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result.html = decoded.decodedBody;
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} else if (decoded.contentType.startsWith('image/') || decoded.contentType.startsWith('application/')) {
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result.attachments.push({
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contentType: decoded.contentType,
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content: decoded.decodedBody
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});
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}
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});
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return result;
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}
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// Replace the old decodeMimeContent function with a new implementation that uses the above functions
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function decodeMimeContent(content: string): string {
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if (!content) return '';
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try {
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// Check if the content includes headers
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if (content.includes('Content-Type:') || content.includes('Content-Transfer-Encoding:')) {
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// If it's a complete email with headers, use the full decoding process
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const decoded = decodeEmail(content);
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return decoded.decodedBody;
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}
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// If no headers are present, try to detect the encoding and decode accordingly
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if (content.includes('=?UTF-8?B?') || content.includes('=?utf-8?B?')) {
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// Base64 encoded content
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return decodeMIME(content, 'base64', 'utf-8');
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} else if (content.includes('=?UTF-8?Q?') || content.includes('=?utf-8?Q?') || content.includes('=20')) {
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// Quoted-printable content
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return decodeMIME(content, 'quoted-printable', 'utf-8');
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}
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// If no specific encoding is detected, try quoted-printable first
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const qpDecoded = decodeMIME(content, 'quoted-printable', 'utf-8');
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if (qpDecoded !== content) {
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return qpDecoded;
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}
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// If quoted-printable didn't change anything, return the original content
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return content;
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} catch (error) {
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console.error('Error decoding email content:', error);
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return content;
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}
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};
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}
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export default function MailPage() {
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// Single IMAP account for now
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