6 files changed, 253 insertions, 0 deletions
diff --git a/src/detection/wallpaper/wallpaper.h b/src/detection/wallpaper/wallpaper.h
new file mode 100644
index 0000000..96fead9
--- /dev/null
+++ b/src/detection/wallpaper/wallpaper.h
@@ -0,0 +1,5 @@
+#pragma once
+
+#include "fastfetch.h"
+
+const char* ffDetectWallpaper(FFstrbuf* result);
diff --git a/src/detection/wallpaper/wallpaper_apple.m b/src/detection/wallpaper/wallpaper_apple.m
new file mode 100644
index 0000000..800aee9
--- /dev/null
+++ b/src/detection/wallpaper/wallpaper_apple.m
@@ -0,0 +1,72 @@
+#include "wallpaper.h"
+#include "common/settings.h"
+#include "common/apple/osascript.h"
+
+#import <Foundation/Foundation.h>
+
+const char* ffDetectWallpaper(FFstrbuf* result)
+{
+    {
+        // For Sonoma
+        // https://github.com/JohnCoates/Aerial/issues/1332
+        NSError* error;
+        NSString* fileName = [NSString stringWithFormat:@"file://%s/Library/Application Support/com.apple.wallpaper/Store/Index.plist", instance.state.platform.homeDir.chars];
+        NSDictionary* dict = [NSDictionary dictionaryWithContentsOfURL:[NSURL URLWithString:fileName]
+                                        error:&error];
+        if (!error)
+        {
+            NSArray* choices = [dict valueForKeyPath:@"SystemDefault.Desktop.Content.Choices"];
+            if (choices.count > 0)
+            {
+                NSDictionary* choice = choices[0];
+                NSArray* files = choice[@"Files"];
+                if (files.count > 0)
+                {
+                    NSString* file = files[0][@"relative"];
+                    ffStrbufAppendS(result, [NSURL URLWithString:file].path.UTF8String);
+                }
+                else
+                {
+                    NSString* provider = choice[@"Provider"];
+                    NSString* builtinPrefix = @"com.apple.wallpaper.choice.";
+                    if ([provider hasPrefix:builtinPrefix])
+                        provider = [provider substringFromIndex:builtinPrefix.length];
+                    if ([provider isEqualToString:@"sonoma"])
+                        ffStrbufSetStatic(result, "macOS Sonoma");
+                    else if ([provider isEqualToString:@"aerials"]) // Most builtin aerial wallpapers are private
+                        ffStrbufSetStatic(result, "Built-in aerial photography");
+                    else
+                        ffStrbufAppendF(result, "Built-in %s wallpaper", provider.UTF8String);
+                }
+            }
+            if (result->length > 0)
+                return NULL;
+        }
+    }
+
+    #ifdef FF_HAVE_SQLITE3
+
+    {
+        // For Ventura
+        // https://stackoverflow.com/questions/301215/getting-desktop-background-on-mac
+        FF_STRBUF_AUTO_DESTROY path = ffStrbufCreateCopy(&instance.state.platform.homeDir);
+        ffStrbufAppendS(&path, "Library/Application Support/Dock/desktoppicture.db");
+        if (ffSettingsGetSQLite3String(path.chars,
+            "SELECT value\n"
+            "FROM preferences\n"
+            "JOIN data ON preferences.data_id=data.ROWID\n"
+            "JOIN pictures ON preferences.picture_id=pictures.ROWID\n"
+            "JOIN displays ON pictures.display_id=displays.ROWID\n"
+            "JOIN spaces ON pictures.space_id=spaces.ROWID\n"
+            "WHERE display_id=1 AND space_id=1 AND key=1", result)
+        )
+            return NULL;
+    }
+
+    #endif
+
+    if (ffOsascript("tell application \"Finder\" to get POSIX path of (get desktop picture as alias)", result))
+        return NULL;
+
+    return "All detection methods failed";
+}
diff --git a/src/detection/wallpaper/wallpaper_haiku.cpp b/src/detection/wallpaper/wallpaper_haiku.cpp
new file mode 100644
index 0000000..0bfad62
--- /dev/null
+++ b/src/detection/wallpaper/wallpaper_haiku.cpp
@@ -0,0 +1,54 @@
+extern "C" {
+#include "wallpaper.h"
+#include "common/mallocHelper.h"
+}
+
+#include <Application.h>
+#include <FindDirectory.h>
+#include <InterfaceDefs.h>
+#include <Node.h>
+#include <Path.h>
+#include <Screen.h>
+#include <fs_attr.h>
+#include <be_apps/Tracker/Background.h>
+
+const char* ffDetectWallpaper(FFstrbuf* result) {
+    BMessage backgrounds;
+    BPath pDesktop;
+    BString path;
+
+    if (find_directory(B_DESKTOP_DIRECTORY, &pDesktop) < B_OK) {
+        return "find_directory(B_DESKTOP_DIRECTORY) failed";
+    }
+
+    // We need a valid be_app to query the app_server here.
+    BApplication app("application/x-vnd.fastfetch-cli-fastfetch");
+
+    BNode nDesktop(pDesktop.Path());
+    if (nDesktop.InitCheck() == B_OK) {
+        struct attr_info ai;
+        if (nDesktop.GetAttrInfo(B_BACKGROUND_INFO, &ai) == B_OK && ai.size > 0) {
+            FF_AUTO_FREE char* pAttr = (char*) malloc(ai.size);
+            if (nDesktop.ReadAttr(B_BACKGROUND_INFO, ai.type, 0LL, pAttr, (size_t) ai.size) >= B_OK) {
+                if (backgrounds.Unflatten(pAttr) == B_OK) {
+                    for (int i = 0; backgrounds.FindString(B_BACKGROUND_IMAGE, i, &path) == B_OK; i++) {
+                        int32 ws;
+                        if (backgrounds.FindInt32(B_BACKGROUND_WORKSPACES, i, &ws) == B_OK) {
+                            if (ws & (1 << current_workspace())) {
+                                // We try to match the one for the current workspace
+                                break;
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    if (path.Length() < 1) {
+        return "Failed to detect the current wallpaper path";
+    }
+
+    ffStrbufAppendS(result, path.String());
+    return NULL;
+}
diff --git a/src/detection/wallpaper/wallpaper_linux.c b/src/detection/wallpaper/wallpaper_linux.c
new file mode 100644
index 0000000..f5ad4ec
--- /dev/null
+++ b/src/detection/wallpaper/wallpaper_linux.c
@@ -0,0 +1,102 @@
+#include "wallpaper.h"
+#include "common/io.h"
+#include "common/settings.h"
+#include "detection/displayserver/displayserver.h"
+#include "detection/gtk_qt/gtk_qt.h"
+
+static const char* detectCosmicComp(FFstrbuf* result) {
+    FF_STRBUF_AUTO_DESTROY path = ffStrbufCreateCopy(FF_LIST_FIRST(FFstrbuf, instance.state.platform.configDirs));
+    ffStrbufAppendS(&path, "cosmic/com.system76.CosmicBackground/v1/");
+    uint32_t basePathLength = path.length;
+
+    FF_STRBUF_AUTO_DESTROY backgrounds = ffStrbufCreate();
+    ffStrbufAppendS(&path, "backgrounds");
+    bool sharedWallpaper = true;
+    FF_STRBUF_AUTO_DESTROY monitorName = ffStrbufCreate();
+    if (ffReadFileBuffer(path.chars, &backgrounds)) {
+        FF_STRBUF_AUTO_DESTROY cleaned = ffStrbufCreateCopy(&backgrounds);
+        ffStrbufRemoveStrings(&cleaned, 4, (const char*[]){ " ", "\n", "\r", "\t" });
+
+        if (!ffStrbufEqualS(&cleaned, "[]")) {
+            const char* firstQuote = strchr(backgrounds.chars, '"');
+            if (firstQuote != NULL) {
+                const char* secondQuote = strchr(firstQuote + 1, '"');
+                if (secondQuote != NULL && secondQuote > firstQuote + 1) {
+                    ffStrbufAppendNS(&monitorName, (uint32_t) (secondQuote - firstQuote - 1), firstQuote + 1);
+                    sharedWallpaper = false;
+                }
+            }
+        }
+    }
+    ffStrbufSubstrBefore(&path, basePathLength);
+
+    if (sharedWallpaper) {
+        ffStrbufAppendS(&path, "all");
+    } else {
+        ffStrbufAppendS(&path, "output.");
+        ffStrbufAppend(&path, &monitorName);
+    }
+
+    FF_STRBUF_AUTO_DESTROY output = ffStrbufCreate();
+    if (!ffReadFileBuffer(path.chars, &output)) {
+        return "Failed to read COSMIC wallpaper config";
+    }
+
+    const char* sourceStart = strstr(output.chars, "source:");
+    if (sourceStart == NULL) {
+        return "COSMIC wallpaper config doesn't contain source";
+    }
+
+    const char* pathStart = strstr(sourceStart, "Path(");
+    if (pathStart == NULL) {
+        return "COSMIC wallpaper source is not a Path value";
+    }
+
+    pathStart += strlen("Path(");
+    while (*pathStart == ' ' || *pathStart == '\t') {
+        ++pathStart;
+    }
+
+    if (*pathStart != '\'' && *pathStart != '"') {
+        return "COSMIC wallpaper Path format is invalid";
+    }
+
+    char quote = *pathStart;
+    ++pathStart;
+    const char* pathEnd = strchr(pathStart, quote);
+    if (pathEnd == NULL || pathEnd == pathStart) {
+        return "COSMIC wallpaper path is empty";
+    }
+
+    ffStrbufAppendNS(result, (uint32_t) (pathEnd - pathStart), pathStart);
+    return NULL;
+}
+
+const char* ffDetectWallpaper(FFstrbuf* result) {
+    const FFDisplayServerResult* wm = ffConnectDisplayServer();
+    if (ffStrbufIgnCaseEqualS(&wm->wmPrettyName, FF_WM_PRETTY_COSMIC_COMP)) {
+        return detectCosmicComp(result);
+    }
+
+    const FFstrbuf* wallpaper = NULL;
+    const FFGTKResult* gtk = ffDetectGTK4();
+    if (gtk->wallpaper.length) {
+        wallpaper = &gtk->wallpaper;
+    } else {
+        const FFQtResult* qt = ffDetectQt();
+        if (qt->wallpaper.length) {
+            wallpaper = &qt->wallpaper;
+        }
+    }
+
+    if (!wallpaper) {
+        return "Failed to detect the current wallpaper path";
+    }
+
+    if (ffStrbufStartsWithS(wallpaper, "file:///")) {
+        ffStrbufAppendS(result, wallpaper->chars + strlen("file://"));
+    } else {
+        ffStrbufAppend(result, wallpaper);
+    }
+    return NULL;
+}
diff --git a/src/detection/wallpaper/wallpaper_nosupport.c b/src/detection/wallpaper/wallpaper_nosupport.c
new file mode 100644
index 0000000..9be8e91
--- /dev/null
+++ b/src/detection/wallpaper/wallpaper_nosupport.c
@@ -0,0 +1,5 @@
+#include "wallpaper.h"
+
+const char* ffDetectWallpaper(FF_A_UNUSED FFstrbuf* result) {
+    return "Not supported on this platform";
+}
diff --git a/src/detection/wallpaper/wallpaper_windows.c b/src/detection/wallpaper/wallpaper_windows.c
new file mode 100644
index 0000000..2adf083
--- /dev/null
+++ b/src/detection/wallpaper/wallpaper_windows.c
@@ -0,0 +1,15 @@
+#include "wallpaper.h"
+#include "common/windows/registry.h"
+
+const char* ffDetectWallpaper(FFstrbuf* result) {
+    FF_AUTO_CLOSE_FD HANDLE hKey = NULL;
+    if (!ffRegOpenKeyForRead(HKEY_CURRENT_USER, L"Control Panel\\Desktop", &hKey, NULL)) {
+        return "ffRegOpenKeyForRead(Control Panel\\Desktop) failed";
+    }
+
+    if (!ffRegReadStrbuf(hKey, L"WallPaper", result, NULL)) {
+        return "ffRegReadStrbuf(WallPaper) failed";
+    }
+
+    return NULL;
+}