MailJDTourDownloadDocsQualityTestsCoverage

Which source lines and branches the tests execute. Lines 91.5 %, branches 75.0 % (minimum 85 % and 72 %). main @ 1ccc50e9 · 21 October 2026 · pipeline 7246.

GCC Code Coverage Report

Directory: src/
Coverage: low: ≥ 0% medium: ≥ 75.0% high: ≥ 90.0%
Coverage Exec / Excl / Total
Lines: 84.4% 206 / 0 / 244
Functions: 95.2% 20 / 0 / 21
Branches: 78.6% 217 / 0 / 276
service/MailLoginProbe.cpp
Line Branch Exec Source
1 #include "MailLoginProbe.h"
2 #include <QLoggingCategory>
3
4
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 66 Q_LOGGING_CATEGORY(lcLoginProbe, "mailjd.settings.probe")
5
6 namespace {
7 // IMAP quoted string (RFC 3501): backslash and quote escaped.
8 22 QByteArray quoted(const QByteArray &value) {
9 22 QByteArray result = value;
10
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 22 result.replace('\\', "\\\\").replace('"', "\\\"");
11
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 44 return '"' + result + '"';
12 22 }
13 3 bool imapRateLimited(const QByteArray &line) {
14
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 3 const QByteArray upper = line.toUpper();
15
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 6 return upper.contains("[UNAVAILABLE]") || upper.contains("TOO MANY") || upper.contains("[LIMIT]");
16 3 }
17 } // namespace
18
19
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 33 MailLoginProbe::MailLoginProbe(QObject *parent) : QObject(parent) {
20
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 33 m_deadline.setSingleShot(true);
21
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 33 connect(&m_deadline, &QTimer::timeout, this, [this] {
22 ✗ auto input = baseInput();
23 ✗ input.socketFailed = true;
24 ✗ input.socketError = QAbstractSocket::SocketTimeoutError;
25 ✗ fail(input);
26 ✗ });
27
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 33 connect(&m_socket, &QSslSocket::readyRead, this, &MailLoginProbe::readLines);
28
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 33 connect(&m_socket, &QSslSocket::encrypted, this, &MailLoginProbe::encrypted);
29
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 33 connect(&m_socket, &QSslSocket::sslErrors, this, [this](const QList<QSslError> &errors) {
30 // Never ignored: a certificate problem ends the check with its details
31 // (D-24: no "trust anyway").
32 2 m_sslErrors = errors;
33 2 });
34
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 33 connect(&m_socket, &QSslSocket::errorOccurred, this, [this](QAbstractSocket::SocketError error) {
35
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 3 if (!m_running) return;
36 3 auto input = baseInput();
37 3 input.sslErrors = m_sslErrors;
38 3 input.socketFailed = true;
39 3 input.socketError = error;
40
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 3 input.serverText = m_socket.errorString();
41
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 3 fail(input);
42 3 });
43 33 }
44
45 114 ConnectionDiagnosis::Input MailLoginProbe::baseInput() const {
46 114 ConnectionDiagnosis::Input input;
47 114 input.service = m_request.service;
48 114 input.host = m_request.host;
49 114 input.port = m_request.port;
50 114 input.account = m_request.account;
51 114 return input;
52 }
53
54 33 void MailLoginProbe::start(const Request &request) {
55 33 cancel();
56 33 m_request = request;
57 33 m_step = Step::Greeting;
58 33 m_sslErrors.clear();
59 33 m_capabilities.clear();
60 33 m_tls = false;
61 33 m_running = true;
62 33 m_socket.setSslConfiguration(m_sslConfiguration);
63 33 m_socket.setPeerVerifyName(request.host);
64 33 m_deadline.start(m_timeoutMs);
65
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 66 qCDebug(lcLoginProbe) << "login check" << request.service << request.host << request.port << request.security;
66
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 33 if (request.security == QLatin1String("ssl")) {
67 31 m_tls = true;
68
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 31 m_socket.connectToHostEncrypted(request.host, request.port);
69 } else {
70
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 2 m_socket.connectToHost(request.host, request.port);
71 }
72 33 }
73
74 33 void MailLoginProbe::cancel() {
75 33 m_running = false;
76 33 m_deadline.stop();
77 33 m_socket.abort();
78 33 }
79
80
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 74 void MailLoginProbe::send(const QByteArray &line) { m_socket.write(line + "\r\n"); }
81
82 18 void MailLoginProbe::fail(ConnectionDiagnosis::Input input) {
83
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 18 if (!m_running) return;
84 18 m_running = false;
85
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 18 m_deadline.stop();
86
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 18 m_socket.abort();
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 18 m_request.password.fill('\0');
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 18 const Diagnosis diagnosis = ConnectionDiagnosis::diagnose(input);
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 36 qCInfo(lcLoginProbe) << "login check" << m_request.service << "failed:" << diagnosis.kind;
90
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 18 emit finished(diagnosis);
91 18 }
92
93 15 void MailLoginProbe::succeed() {
94
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 15 if (!m_running) return;
95 15 m_running = false;
96 15 m_deadline.stop();
97 15 m_request.password.fill('\0');
98 15 m_socket.disconnectFromHost();
99
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 30 qCInfo(lcLoginProbe) << "login check" << m_request.service << "succeeded";
100
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 15 emit finished(ConnectionDiagnosis::success(m_request.service));
101 }
102
103 28 void MailLoginProbe::encrypted() {
104
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 28 if (!m_running) return;
105 28 m_tls = true;
106 // Implicit TLS waits for the greeting; after STARTTLS the dialogue goes on.
107
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 28 if (m_request.security != QLatin1String("starttls")) return;
108 ✗ if (m_request.service == QLatin1String("imap")) imapLogin();
109 ✗ else smtpHello();
110 }
111
112 89 void MailLoginProbe::readLines() {
113
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 198 while (m_running && m_socket.canReadLine()) {
114
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 109 const QByteArray line = m_socket.readLine(4096).trimmed();
115
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 109 if (m_request.service == QLatin1String("imap")) handleImap(line);
116
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 83 else handleSmtp(line);
117 109 }
118 89 }
119
120 // S106-202: the username goes into an IMAP quoted string and raw SMTP
121 // MAIL FROM/RCPT TO lines — a CR, LF or NUL in it (an autoconfig answer)
122 // would inject a command, like one in the password.
123 39 static bool breaksALine(const QByteArray &value) {
124
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 39 return value.contains('\r') || value.contains('\n') || value.contains('\0');
125 }
126
127 12 void MailLoginProbe::imapLogin() {
128
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 12 if (!m_tls) return; // never a password over plain text
129
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 12 if (breaksALine(m_request.password) || breaksALine(m_request.username.toUtf8())) {
130 1 auto input = baseInput();
131 1 input.authRejected = true;
132
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 1 fail(input);
133 1 return;
134 1 }
135 11 m_step = Step::Login;
136
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 11 send("A1 LOGIN " + quoted(m_request.username.toUtf8()) + ' ' + quoted(m_request.password));
137 }
138
139 26 void MailLoginProbe::handleImap(const QByteArray &line) {
140 26 auto input = baseInput();
141
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 26 input.serverText = QString::fromUtf8(line.left(300));
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 26 if (m_step == Step::Greeting) {
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 14 if (!line.startsWith("* OK") && !line.startsWith("* PREAUTH")) {
144 1 input.protocolMismatch = true;
145
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 1 fail(input);
146 1 return;
147 }
148
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 13 if (m_request.security == QLatin1String("starttls")) {
149 1 m_step = Step::StartTls;
150
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 1 send("A0 STARTTLS");
151 } else {
152
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 12 imapLogin();
153 }
154 13 return;
155 }
156
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 12 if (m_step == Step::StartTls) {
157
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 1 if (line.startsWith("*")) return;
158
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 1 if (!line.startsWith("A0 OK")) {
159 1 input.tlsUnavailable = true;
160
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 1 fail(input);
161 1 return;
162 }
163 ✗ m_socket.startClientEncryption();
164 ✗ return;
165 }
166
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 11 if (m_step == Step::Login) {
167
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 11 if (line.startsWith("*")) return;
168
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 11 if (line.startsWith("A1 OK")) {
169
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 8 send("A2 LOGOUT");
170
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 8 succeed();
171 8 return;
172 }
173
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 3 if (imapRateLimited(line)) input.rateLimited = true;
174 2 else input.authRejected = true;
175
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 3 fail(input);
176 }
177 26 }
178
179 16 void MailLoginProbe::smtpHello() {
180 16 m_step = Step::Capabilities;
181 16 m_capabilities.clear();
182
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 16 send("EHLO mailjd.localhost");
183 16 }
184
185 15 void MailLoginProbe::smtpAuthenticate() {
186
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 15 if (!m_tls) {
187 ✗ auto input = baseInput();
188 ✗ input.tlsUnavailable = true;
189 ✗ fail(input);
190 ✗ return;
191 ✗ }
192
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 15 if (breaksALine(m_request.username.toUtf8())) {
193 1 auto input = baseInput();
194 1 input.authRejected = true;
195
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 1 fail(input);
196 1 return;
197 1 }
198
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 14 const QByteArray caps = m_capabilities.toUpper();
199
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 14 if (!caps.contains("AUTH")) { // a server that relays without login
200 // F-31: still verify the envelope — relaying policy decides whether
201 // this server is usable for sending, not the absence of a login.
202 ✗ m_step = Step::MailFrom;
203 ✗ send("MAIL FROM:<" + m_request.username.toUtf8() + ">");
204 ✗ return;
205 }
206
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 14 if (caps.contains("PLAIN")) {
207 13 m_step = Step::AuthPlain;
208
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 13 const QByteArray token = QByteArray(1, '\0') + m_request.username.toUtf8() + QByteArray(1, '\0') + m_request.password;
209
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 13 send("AUTH PLAIN " + token.toBase64());
210 13 } else {
211 1 m_step = Step::AuthUser;
212
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 1 send("AUTH LOGIN");
213 }
214 14 }
215
216 83 void MailLoginProbe::handleSmtp(const QByteArray &line) {
217 83 auto input = baseInput();
218
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 83 input.serverText = QString::fromUtf8(line.left(300));
219
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 83 const int code = line.left(3).toInt();
220
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 83 const bool last = line.size() < 4 || line.at(3) != '-';
221
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 83 switch (m_step) {
222 16 case Step::Greeting:
223
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 16 if (code != 220) {
224 ✗ input.protocolMismatch = true;
225 ✗ fail(input);
226 ✗ return;
227 }
228
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 16 if (last) smtpHello();
229 16 return;
230 36 case Step::Capabilities:
231
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 36 if (code != 250) {
232 ✗ fail(input);
233 ✗ return;
234 }
235
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 36 m_capabilities += line.mid(4) + '\n';
236
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 36 if (!last) return;
237
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 16 if (!m_tls && m_request.security == QLatin1String("starttls")) {
238
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 1 if (!m_capabilities.toUpper().contains("STARTTLS")) {
239 1 input.tlsUnavailable = true;
240
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 1 fail(input);
241 1 return;
242 }
243 ✗ m_step = Step::StartTls;
244 ✗ send("STARTTLS");
245 ✗ return;
246 }
247
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 15 smtpAuthenticate();
248 15 return;
249 ✗ case Step::StartTls:
250 ✗ if (code != 220) {
251 ✗ input.tlsUnavailable = true;
252 ✗ fail(input);
253 ✗ return;
254 }
255 ✗ m_socket.startClientEncryption();
256 ✗ return;
257 1 case Step::AuthUser:
258
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 1 if (code != 334) break;
259 1 m_step = Step::AuthPassword;
260
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 2 send(m_request.username.toUtf8().toBase64());
261 1 return;
262 1 case Step::AuthPassword:
263
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 1 if (code != 334) break;
264 1 m_step = Step::AuthPlain;
265
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 1 send(m_request.password.toBase64());
266 1 return;
267 14 case Step::AuthPlain:
268
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 14 if (code == 235) {
269 // F-31 (SPRINT-104): the login check performs the same envelope
270 // probe the send path uses — a server may accept AUTH and still
271 // refuse every MAIL FROM/RCPT TO (relaying denied), and setup used
272 // to call such a server usable.
273 8 m_step = Step::MailFrom;
274
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 8 send("MAIL FROM:<" + m_request.username.toUtf8() + ">");
275 8 return;
276 }
277 6 break;
278 8 case Step::MailFrom:
279
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 8 if (code == 250) {
280 7 m_step = Step::RcptTo;
281
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 7 send("RCPT TO:<" + m_request.username.toUtf8() + ">");
282 7 return;
283 }
284 // F-31: the login works but the server refuses the envelope (e.g.
285 // relaying denied) — not usable for sending; the server's text says
286 // why.
287 1 input.protocolMismatch = true;
288
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 1 input.serverText = QString::fromUtf8(line.left(300));
289
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 1 fail(input);
290 1 return;
291 7 case Step::RcptTo:
292
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 7 if (code == 250 || code == 251) {
293
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 7 send("QUIT");
294
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 7 succeed();
295 7 return;
296 }
297 ✗ input.protocolMismatch = true;
298 ✗ input.serverText = QString::fromUtf8(line.left(300));
299 ✗ fail(input);
300 ✗ return;
301 ✗ default:
302 ✗ return;
303 }
304 // 535 (bad credentials), 534/538 (needs stronger auth), 454/421 (try later).
305
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 6 if (code == 454 || code == 421 || code == 450) input.rateLimited = true;
306 5 else input.authRejected = true;
307
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 6 fail(input);
308 83 }
309