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authorAlexander Golubev <fatzer2@gmail.com>2024-01-30 00:44:29 +0300
committerTDE Gitea <gitea@mirror.git.trinitydesktop.org>2024-03-04 11:04:11 +0000
commit1597d5f3848cdb39b7d458f0c6c33ecdfc3125d5 (patch)
tree9e4eedd7ba473317889c68139aa58cb57e7b7e07 /tdeioslave
parent4b4b72db8f880027a85cb95a1510cefd5522d245 (diff)
downloadtdebase-1597d5f3848cdb39b7d458f0c6c33ecdfc3125d5.tar.gz
tdebase-1597d5f3848cdb39b7d458f0c6c33ecdfc3125d5.zip
tdeioslave/sftp: better erros for unsupported auth methods
Also: - do not translate auth methods names as the names appear in config files verbatim - libssh actually doesn't supports hostbased auth, so exclude it from bitset of supported Signed-off-by: Alexander Golubev <fatzer2@gmail.com>
Diffstat (limited to 'tdeioslave')
-rw-r--r--tdeioslave/sftp/tdeio_sftp.cpp57
-rw-r--r--tdeioslave/sftp/tdeio_sftp.h8
2 files changed, 44 insertions, 21 deletions
diff --git a/tdeioslave/sftp/tdeio_sftp.cpp b/tdeioslave/sftp/tdeio_sftp.cpp
index b71e9c1b5..971cdb30d 100644
--- a/tdeioslave/sftp/tdeio_sftp.cpp
+++ b/tdeioslave/sftp/tdeio_sftp.cpp
@@ -174,7 +174,6 @@ void log_callback(ssh_session session, int priority, const char *message,
class PublicKeyAuth: public SSHAuthMethod {
public:
int flag() override {return SSH_AUTH_METHOD_PUBLICKEY;};
- TQString name() override { return i18n("public key"); };
int authenticate(sftpProtocol *ioslave) const override {
return ioslave->authenticatePublicKey();
}
@@ -186,7 +185,6 @@ public:
KeyboardInteractiveAuth(bool noPaswordQuery = false): mNoPaswordQuery(noPaswordQuery) {}
int flag() override {return SSH_AUTH_METHOD_INTERACTIVE;};
- TQString name() override { return i18n("keyboard interactive"); };
int authenticate(sftpProtocol *ioslave) const override {
return ioslave->authenticateKeyboardInteractive(mNoPaswordQuery);
}
@@ -201,7 +199,6 @@ public:
PasswordAuth(bool noPaswordQuery = false): mNoPaswordQuery(noPaswordQuery) {}
int flag() override {return SSH_AUTH_METHOD_PASSWORD;};
- TQString name() override { return i18n("password"); };
int authenticate(sftpProtocol *ioslave) const override {
return ioslave->authenticatePassword(mNoPaswordQuery);
}
@@ -211,6 +208,31 @@ private:
const bool mNoPaswordQuery;
};
+TQString SSHAuthMethod::flagToStr (int m) {
+ switch (m) {
+ case SSH_AUTH_METHOD_NONE : return TQString::fromLatin1 ( "none" );
+ case SSH_AUTH_METHOD_PASSWORD : return TQString::fromLatin1 ( "password" );
+ case SSH_AUTH_METHOD_PUBLICKEY : return TQString::fromLatin1 ( "publickey" );
+ case SSH_AUTH_METHOD_HOSTBASED : return TQString::fromLatin1 ( "hostbased" );
+ case SSH_AUTH_METHOD_INTERACTIVE : return TQString::fromLatin1 ( "keyboard-interactive" );
+ case SSH_AUTH_METHOD_GSSAPI_MIC : return TQString::fromLatin1 ( "gssapi-with-mic" );
+ default : return TQString::fromLatin1 ( "unknown" );
+ }
+}
+
+TQStringList SSHAuthMethod::bitsetToStr (int m) {
+ TQStringList rv;
+
+ for (int i=0; m>>i; i++) {
+ int flag = m & (1 << i);
+ if (flag) {
+ rv.append(flagToStr(flag));
+ }
+ }
+ return rv;
+}
+
+
// Public key authentication
int sftpProtocol::auth_callback(const char *prompt, char *buf, size_t len,
int echo, int verify, void *userdata)
@@ -1116,7 +1138,7 @@ connection_restart:
}
// Preinit the list of supported auth methods
- static const auto authMethodsNormal= [](){
+ static const auto authMethodsNormal = [](){
std::vector<std::unique_ptr<SSHAuthMethod>> rv;
rv.emplace_back(std::make_unique<PublicKeyAuth>());
rv.emplace_back(std::make_unique<KeyboardInteractiveAuth>());
@@ -1126,7 +1148,7 @@ connection_restart:
const static int supportedMethods = std::accumulate(
authMethodsNormal.begin(), authMethodsNormal.end(),
- SSH_AUTH_METHOD_NONE | SSH_AUTH_METHOD_HOSTBASED, //< methods supported automagically
+ SSH_AUTH_METHOD_NONE, //< none is supported by default
[](int acc, const auto &m){ return acc |= m->flag(); });
int attemptedMethods = 0;
@@ -1150,12 +1172,13 @@ connection_restart:
// Technically libssh docs suggest that the server merely MAY send auth methods, but it's
// highly unclear what we should do in such case and it looks like openssh doesn't have an
// option for that, so let's just consider this server a jerk and don't talk to him anymore.
- error(TDEIO::ERR_COULD_NOT_LOGIN, i18n("Authentication failed."
- " The server did not send any authentication methods!"));
+ error(TDEIO::ERR_COULD_NOT_LOGIN, i18n("Authentication failed.\n"
+ "The server did not send any authentication methods!"));
return;
} else if (!(availableMethodes & supportedMethods)) {
- error(TDEIO::ERR_COULD_NOT_LOGIN, i18n("Authentication failed."
- " The server sent only unsupported authentication methods!"));
+ error(TDEIO::ERR_COULD_NOT_LOGIN, i18n("Authentication failed.\n"
+ "The server sent only unsupported authentication methods (%1)!")
+ .arg(SSHAuthMethod::bitsetToStr(availableMethodes).join(", ")));
return;
}
@@ -1216,23 +1239,17 @@ connection_restart:
error(TDEIO::ERR_USER_CANCELED, TQString::null);
return;
} else if (rc != SSH_AUTH_SUCCESS && rc != SSH_AUTH_PARTIAL) {
- TQStringList attemptedMethodsLst;
- for (auto &method: authMethodsNormal) {
- if (attemptedMethods & method->flag()) { attemptedMethodsLst << method->name(); }
- }
-
- TQString errMsg = i18n("Authentication denied (attempted method was: %1).",
- "Authentication denied (attempted methods were: %1).",
- attemptedMethodsLst.size())
- .arg(attemptedMethodsLst.join(", "));
+ TQString errMsg = i18n("Authentication denied (attempted methods: %1).")
+ .arg(SSHAuthMethod::bitsetToStr(attemptedMethods).join(", "));
if (availableMethodes & ~supportedMethods) {
errMsg.append("\n")
- .append(i18n("Note: server also declares some other unsupported authentication methods"));
+ .append(i18n("Note: server also declares some unsupported authentication methods (%1)")
+ .arg(SSHAuthMethod::bitsetToStr(availableMethodes & ~supportedMethods).join(", ")));
}
error(TDEIO::ERR_COULD_NOT_LOGIN, errMsg);
return;
}
- }
+ } // while (rc != SSH_AUTH_SUCCESS)
// start sftp session
kdDebug(TDEIO_SFTP_DB) << "Trying to request the sftp session" << endl;
diff --git a/tdeioslave/sftp/tdeio_sftp.h b/tdeioslave/sftp/tdeio_sftp.h
index 54d4e8242..303014ead 100644
--- a/tdeioslave/sftp/tdeio_sftp.h
+++ b/tdeioslave/sftp/tdeio_sftp.h
@@ -201,13 +201,19 @@ public:
/** libssh's flag for he method */
virtual int flag() = 0;
/** The user-friendly (probably translated) name of the method */
- virtual TQString name() = 0;
+ virtual TQString name() {return flagToStr(flag());}
/** Actually do perform the auth process */
virtual int authenticate(sftpProtocol *ioslave) const = 0;
/** Creates a copy of derived class */
virtual SSHAuthMethod* clone() = 0;
virtual ~SSHAuthMethod() {};
+
+ /** Returns a name for the given libssh auth method flag */
+ static TQString flagToStr(int method);
+
+ /** Returns a list of names for all the methods set in the given libssh auth method bitset */
+ static TQStringList bitsetToStr(int method);
};
#endif