core/input: add feedback for password verification

src/core/Password.cpp

@@ -1,9 +1,12 @@
 #include "Password.hpp"
+#include "hyprlock.hpp"
 
 #include <unistd.h>
 #include <security/pam_appl.h>
 #include <security/pam_misc.h>
 
+#include <thread>
+
 struct pam_response* reply;
 
 //
@@ -12,14 +15,27 @@ int conv(int num_msg, const struct pam_message** msg, struct pam_response** resp
     return PAM_SUCCESS;
 }
 
-CPassword::SVerificationResult CPassword::verify(const std::string& pass) {
+static void passwordCheckTimerCallback(std::shared_ptr<CTimer> self, void* data) {
+    g_pHyprlock->onPasswordCheckTimer();
+}
+
+std::shared_ptr<CPassword::SVerificationResult> CPassword::verify(const std::string& pass) {
+
+    std::shared_ptr<CPassword::SVerificationResult> result = std::make_shared<CPassword::SVerificationResult>(false);
+
+    std::thread([this, result, pass]() {
         const pam_conv localConv = {conv, NULL};
         pam_handle_t*  handle    = NULL;
 
         int            ret = pam_start("su", getlogin(), &localConv, &handle);
 
-    if (ret != PAM_SUCCESS)
+        if (ret != PAM_SUCCESS) {
-        return {false, "pam_start failed"};
+            result->success    = false;
+            result->failReason = "pam_start failed";
+            result->realized   = true;
+            g_pHyprlock->addTimer(std::chrono::milliseconds(1), passwordCheckTimerCallback, nullptr);
+            return;
+        }
 
         reply = (struct pam_response*)malloc(sizeof(struct pam_response));
 
@@ -27,10 +43,21 @@ CPassword::SVerificationResult CPassword::verify(const std::string& pass) {
         reply->resp_retcode = 0;
         ret                 = pam_authenticate(handle, 0);
 
-    if (ret != PAM_SUCCESS)
+        if (ret != PAM_SUCCESS) {
-        return {false, ret == PAM_AUTH_ERR ? "Authentication failed" : "pam_authenticate failed"};
+            result->success    = false;
+            result->failReason = ret == PAM_AUTH_ERR ? "Authentication failed" : "pam_authenticate failed";
+            result->realized   = true;
+            g_pHyprlock->addTimer(std::chrono::milliseconds(1), passwordCheckTimerCallback, nullptr);
+            return;
+        }
 
         ret = pam_end(handle, ret);
 
-    return {true, "Successfully authenticated"};
+        result->success    = true;
+        result->failReason = "Successfully authenticated";
+        result->realized   = true;
+        g_pHyprlock->addTimer(std::chrono::milliseconds(1), passwordCheckTimerCallback, nullptr);
+    }).detach();
+
+    return result;
 }

src/core/Password.hpp

@@ -2,15 +2,17 @@
 
 #include <memory>
 #include <string>
+#include <atomic>
 
 class CPassword {
   public:
     struct SVerificationResult {
+        std::atomic<bool> realized   = false;
         bool              success    = false;
         std::string       failReason = "";
     };
 
-    SVerificationResult verify(const std::string& pass);
+    std::shared_ptr<SVerificationResult> verify(const std::string& pass);
 };
 
 inline std::unique_ptr<CPassword> g_pPassword = std::make_unique<CPassword>();

src/core/hyprlock.cpp

@@ -405,6 +405,27 @@ static const ext_session_lock_v1_listener sessionLockListener = {
 
 // end session_lock
 
+void CHyprlock::onPasswordCheckTimer() {
+    // check result
+    if (m_sPasswordState.result->success) {
+        unlockSession();
+    } else {
+        Debug::log(LOG, "Authentication failed: {}", m_sPasswordState.result->failReason);
+        m_sPasswordState.lastFailReason = m_sPasswordState.result->failReason;
+        m_sPasswordState.passBuffer     = "";
+    }
+
+    m_sPasswordState.result.reset();
+}
+
+bool CHyprlock::passwordCheckWaiting() {
+    return m_sPasswordState.result.get();
+}
+
+std::optional<std::string> CHyprlock::passwordLastFailReason() {
+    return m_sPasswordState.lastFailReason;
+}
+
 void CHyprlock::onKey(uint32_t key) {
     const auto SYM = xkb_state_key_get_one_sym(m_pXKBState, key + 8);
 
@@ -414,14 +435,7 @@ void CHyprlock::onKey(uint32_t key) {
     } else if (SYM == XKB_KEY_Return) {
         Debug::log(LOG, "Authenticating");
 
-        const auto RESULT = g_pPassword->verify(m_sPasswordState.passBuffer);
+        m_sPasswordState.result = g_pPassword->verify(m_sPasswordState.passBuffer);
-
-        Debug::log(LOG, "Password auth result: {}", RESULT.failReason);
-
-        if (RESULT.success)
-            unlockSession();
-
-        m_sPasswordState.passBuffer = "";
     } else {
         char buf[16] = {0};
         int  len     = xkb_keysym_to_utf8(SYM, buf, 16);

src/core/hyprlock.hpp

@@ -7,10 +7,12 @@
 #include "Output.hpp"
 #include "CursorShape.hpp"
 #include "Timer.hpp"
+#include "Password.hpp"
 
 #include <memory>
 #include <vector>
 #include <condition_variable>
+#include <optional>
 
 #include <xkbcommon/xkbcommon.h>
 
@@ -32,6 +34,9 @@ class CHyprlock {
     void                            unlockSession();
 
     void                            onKey(uint32_t key);
+    void                            onPasswordCheckTimer();
+    bool                            passwordCheckWaiting();
+    std::optional<std::string>      passwordLastFailReason();
 
     size_t                          getPasswordBufferLen();
 
@@ -70,6 +75,8 @@ class CHyprlock {
 
     struct {
         std::string                                     passBuffer = "";
+        std::shared_ptr<CPassword::SVerificationResult> result;
+        std::optional<std::string>                      lastFailReason;
     } m_sPasswordState;
 
     struct {

src/renderer/widgets/PasswordInputField.cpp

@@ -23,7 +23,7 @@ CPasswordInputField::CPasswordInputField(const Vector2D& viewport, const std::un
         request.type                 = CAsyncResourceGatherer::eTargetType::TARGET_TEXT;
         request.props["font_family"] = std::string{"Sans"};
         request.props["color"]       = CColor{1.0 - font.r, 1.0 - font.g, 1.0 - font.b, 0.5};
-        request.props["font_size"]   = 12;
+        request.props["font_size"]   = (int)size.y / 4;
         g_pRenderer->asyncResourceGatherer->requestAsyncAssetPreload(request);
     }
 }
@@ -86,13 +86,20 @@ bool CPasswordInputField::draw(const SRenderData& data) {
     CBox inputFieldBox = {pos, size};
     CBox outerBox      = {pos - Vector2D{out_thick, out_thick}, size + Vector2D{out_thick * 2, out_thick * 2}};
 
+    bool forceReload = false;
+
     updateFade();
     updateDots();
+    updateFailTex();
+
+    float  passAlpha = g_pHyprlock->passwordCheckWaiting() ? 0.5 : 1.0;
 
     CColor outerCol = outer;
     outer.a         = fade.a * data.opacity;
     CColor innerCol = inner;
     innerCol.a      = fade.a * data.opacity;
+    CColor fontCol  = font;
+    fontCol.a *= fade.a * data.opacity * passAlpha;
 
     g_pRenderer->renderRect(outerBox, outerCol, outerBox.h / 2.0);
     g_pRenderer->renderRect(inputFieldBox, innerCol, inputFieldBox.h / 2.0);
@@ -103,7 +110,6 @@ bool CPasswordInputField::draw(const SRenderData& data) {
     for (size_t i = 0; i < std::floor(dots.currentAmount); ++i) {
         Vector2D currentPos = inputFieldBox.pos() + Vector2D{PASS_SPACING * 2, inputFieldBox.h / 2.f - PASS_SIZE / 2.f} + Vector2D{(PASS_SIZE + PASS_SPACING) * i, 0};
         CBox     box{currentPos, Vector2D{PASS_SIZE, PASS_SIZE}};
-        CColor   fontCol = font;
         g_pRenderer->renderRect(box, fontCol, PASS_SIZE / 2.0);
     }
 
@@ -111,7 +117,6 @@ bool CPasswordInputField::draw(const SRenderData& data) {
         Vector2D currentPos =
             inputFieldBox.pos() + Vector2D{PASS_SPACING * 2, inputFieldBox.h / 2.f - PASS_SIZE / 2.f} + Vector2D{(PASS_SIZE + PASS_SPACING) * std::floor(dots.currentAmount), 0};
         CBox box{currentPos, Vector2D{PASS_SIZE, PASS_SIZE}};
-        CColor fontCol = font;
         fontCol.a = (dots.currentAmount - std::floor(dots.currentAmount)) * data.opacity;
         g_pRenderer->renderRect(box, fontCol, PASS_SIZE / 2.0);
     }
@@ -119,16 +124,60 @@ bool CPasswordInputField::draw(const SRenderData& data) {
     const auto PASSLEN = g_pHyprlock->getPasswordBufferLen();
 
     if (PASSLEN == 0 && !placeholder.resourceID.empty()) {
+        SPreloadedAsset* currAsset = nullptr;
+
+        if (!placeholder.failID.empty()) {
+            if (!placeholder.failAsset)
+                placeholder.failAsset = g_pRenderer->asyncResourceGatherer->getAssetByID(placeholder.failID);
+
+            currAsset = placeholder.failAsset;
+        } else {
             if (!placeholder.asset)
                 placeholder.asset = g_pRenderer->asyncResourceGatherer->getAssetByID(placeholder.resourceID);
 
-        if (placeholder.asset) {
+            currAsset = placeholder.asset;
-            Vector2D pos = outerBox.pos() + outerBox.size() / 2.f;
-            pos          = pos - placeholder.asset->texture.m_vSize / 2.f;
-            CBox textbox{pos, placeholder.asset->texture.m_vSize};
-            g_pRenderer->renderTexture(textbox, placeholder.asset->texture, data.opacity * fade.a, 0);
-        }
         }
 
-    return dots.currentAmount != PASSLEN || data.opacity < 1.0 || fade.a < 1.0;
+        if (currAsset) {
+            Vector2D pos = outerBox.pos() + outerBox.size() / 2.f;
+            pos          = pos - currAsset->texture.m_vSize / 2.f;
+            CBox textbox{pos, currAsset->texture.m_vSize};
+            g_pRenderer->renderTexture(textbox, currAsset->texture, data.opacity * fade.a, 0);
+        } else
+            forceReload = true;
+    }
+
+    return dots.currentAmount != PASSLEN || data.opacity < 1.0 || fade.a < 1.0 || forceReload;
+}
+
+void CPasswordInputField::updateFailTex() {
+    const auto FAIL = g_pHyprlock->passwordLastFailReason();
+
+    if (g_pHyprlock->passwordCheckWaiting())
+        placeholder.canGetNewFail = true;
+
+    if (g_pHyprlock->getPasswordBufferLen() != 0) {
+        if (placeholder.failAsset) {
+            g_pRenderer->asyncResourceGatherer->unloadAsset(placeholder.failAsset);
+            placeholder.failAsset = nullptr;
+            placeholder.failID    = "";
+        }
+        return;
+    }
+
+    if (!FAIL.has_value() || !placeholder.canGetNewFail)
+        return;
+
+    // query
+    CAsyncResourceGatherer::SPreloadRequest request;
+    request.id                   = "input-error:" + std::to_string((uintptr_t)this) + ",time:" + std::to_string(time(nullptr));
+    placeholder.failID           = request.id;
+    request.asset                = "<span style=\"italic\">" + FAIL.value() + "</span>";
+    request.type                 = CAsyncResourceGatherer::eTargetType::TARGET_TEXT;
+    request.props["font_family"] = std::string{"Sans"};
+    request.props["color"]       = CColor{1.0 - font.r, 1.0 - font.g, 1.0 - font.b, 0.5};
+    request.props["font_size"]   = (int)size.y / 4;
+    g_pRenderer->asyncResourceGatherer->requestAsyncAssetPreload(request);
+
+    placeholder.canGetNewFail = false;
 }

src/renderer/widgets/PasswordInputField.hpp

@@ -19,6 +19,7 @@ class CPasswordInputField : public IWidget {
   private:
     void     updateDots();
     void     updateFade();
+    void     updateFailTex();
 
     Vector2D size;
     Vector2D pos;
@@ -43,6 +44,10 @@ class CPasswordInputField : public IWidget {
     struct {
         std::string      resourceID = "";
         SPreloadedAsset* asset      = nullptr;
+
+        std::string      failID        = "";
+        SPreloadedAsset* failAsset     = nullptr;
+        bool             canGetNewFail = true;
     } placeholder;
 
     bool fadeOnEmpty;