utils: implement utilsIsApplicationUpdatable().

Also removed legacy code that has already been reimplemented.

include/core/nxdt_utils.h

@@ -151,10 +151,20 @@ void utilsCreateDirectoryTree(const char *path, bool create_last_element);
 /// Furthermore, if the full length for the generated path is >= FS_MAX_PATH, NULL will be returned.
 char *utilsGeneratePath(const char *prefix, const char *filename, const char *extension);
 
+/// Returns the current application updated state.
+bool utilsGetApplicationUpdatedState(void);
+
+/// Sets the application updated state to true, which makes utilsCloseResources() replace the application NRO.
+void utilsSetApplicationUpdatedState(void);
+
 /// Parses the provided GitHub release JSON data buffer.
 /// The data from the output buffer must be freed using utilsFreeGitHubReleaseJsonData().
 bool utilsParseGitHubReleaseJsonData(const char *json_buf, size_t json_buf_size, UtilsGitHubReleaseJsonData *out);
 
+/// Parses the provided version string and compares it to the application version. Returns true if the application can be updated.
+/// If both versions are equal, the provided commit hash is compared to our commit hash - if they're different, true will be returned.
+bool utilsIsApplicationUpdatable(const char *version, const char *commit_hash);
+
 /// Frees previously allocated data from a UtilsGitHubReleaseJsonData element.
 NX_INLINE void utilsFreeGitHubReleaseJsonData(UtilsGitHubReleaseJsonData *data)
 {
@@ -163,13 +173,6 @@ NX_INLINE void utilsFreeGitHubReleaseJsonData(UtilsGitHubReleaseJsonData *data)
     memset(data, 0, sizeof(UtilsGitHubReleaseJsonData));
 }
 
-/// Returns the current application updated state.
-bool utilsGetApplicationUpdatedState(void);
-
-/// Sets the application updated state to true, which makes utilsCloseResources() replace the application NRO.
-/// Use carefully.
-void utilsSetApplicationUpdatedState(void);
-
 /// Simple wrapper to sleep the current thread for a specific number of full seconds.
 NX_INLINE void utilsSleep(u64 seconds)
 {

legacy/util.c

@@ -1840,119 +1840,6 @@ void gameCardDumpNSWDBCheck(u32 crc)
     if (!found) uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_ERROR_RGB, "No match found in NSWDB.COM XML database! This could either be a bad dump or an undumped gamecard.");
 }
 
-static Result networkInit()
-{
-    if (initNet) return 0;
-    
-    Result result = socketInitializeDefault();
-    if (R_SUCCEEDED(result))
-    {
-        curl_global_init(CURL_GLOBAL_ALL);
-        initNet = true;
-    }
-    
-    return result;
-}
-
-static void networkExit()
-{
-    if (!initNet) return;
-    
-    curl_global_cleanup();
-    socketExit();
-    initNet = false;
-}
-
-static size_t writeCurlFile(char *buffer, size_t size, size_t number_of_items, void *input_stream)
-{
-    size_t total_size = (size * number_of_items);
-    if (fwrite(buffer, 1, total_size, input_stream) != total_size) return 0;
-    return total_size;
-}
-
-static size_t writeCurlBuffer(char *buffer, size_t size, size_t number_of_items, void *input_stream)
-{
-    (void) input_stream;
-    const size_t bsz = (size * number_of_items);
-    
-    if (result_sz == 0 || !result_buf)
-    {
-        result_sz = 0x1000;
-        result_buf = malloc(result_sz);
-        if (!result_buf) return 0;
-    }
-    
-    bool need_realloc = false;
-    
-    while((result_written + bsz) > result_sz) 
-    {
-        result_sz <<= 1;
-        need_realloc = true;
-    }
-    
-    if (need_realloc)
-    {
-        char *new_buf = realloc(result_buf, result_sz);
-        if (!new_buf) return 0;
-        result_buf = new_buf;
-    }
-    
-    memcpy(result_buf + result_written, buffer, bsz);
-    result_written += bsz;
-    return bsz;
-}
-
-static bool performCurlRequest(CURL *curl, const char *url, FILE *filePtr, bool forceHttps, bool verbose)
-{
-    if (!curl || !url || !strlen(url))
-    {
-        uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_ERROR_RGB, "%s: invalid parameters to perform CURL request!", __func__);
-        return false;
-    }
-    
-    curl_easy_setopt(curl, CURLOPT_BUFFERSIZE, 102400L);
-    curl_easy_setopt(curl, CURLOPT_URL, url);
-    curl_easy_setopt(curl, CURLOPT_USERAGENT, HTTP_USER_AGENT);
-    curl_easy_setopt(curl, CURLOPT_FAILONERROR, 1L);
-    curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 1L);
-    curl_easy_setopt(curl, CURLOPT_NOBODY, 0L);
-    curl_easy_setopt(curl, CURLOPT_HEADER, 0L);
-    curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
-    curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
-    curl_easy_setopt(curl, CURLOPT_MAXREDIRS, 50L);
-    if (forceHttps) curl_easy_setopt(curl, CURLOPT_HTTP_VERSION, (long)CURL_HTTP_VERSION_2TLS);
-    
-    if (filePtr)
-    {
-        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, writeCurlFile);
-        curl_easy_setopt(curl, CURLOPT_WRITEDATA, filePtr);
-    } else {
-        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, writeCurlBuffer);
-    }
-    
-    CURLcode res;
-    long http_code = 0;
-    double size = 0.0;
-    bool success = false;
-    
-    res = curl_easy_perform(curl);
-    
-    result_sz = result_written = 0;
-    
-    curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &http_code);
-    curl_easy_getinfo(curl, CURLINFO_SIZE_DOWNLOAD, &size);
-    
-    if (res == CURLE_OK && http_code >= 200 && http_code <= 299 && size > 0)
-    {
-        if (verbose) uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_SUCCESS_RGB, "Successfully downloaded %.0lf bytes!", size);
-        success = true;
-    } else {
-        uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_ERROR_RGB, "%s: CURL request failed for \"%s\" endpoint!\nHTTP status code: %ld", __func__, url, http_code);
-    }
-    
-    return success;
-}
-
 void noIntroDumpCheck(bool isDigital, u32 crc)
 {
     Result result;
@@ -2004,436 +1891,3 @@ out:
     
     if (R_SUCCEEDED(result)) networkExit();
 }
-
-void updateNSWDBXml()
-{
-    Result result;
-    CURL *curl = NULL;
-    bool success = false;
-    FILE *nswdbXml = NULL;
-    
-    result = networkInit();
-    if (R_FAILED(result))
-    {
-        uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_ERROR_RGB, "%s: failed to initialize socket! (%08X)", __func__, result);
-        goto out;
-    }
-    
-    char xmlPath[256] = {'\0'};
-    snprintf(xmlPath, MAX_CHARACTERS(xmlPath), "%s.tmp", NSWDB_XML_PATH);
-    
-    curl = curl_easy_init();
-    if (!curl)
-    {
-        uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_ERROR_RGB, "%s: failed to initialize CURL context!", __func__);
-        goto out;
-    }
-    
-    nswdbXml = fopen(xmlPath, "wb");
-    if (!nswdbXml)
-    {
-        uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_ERROR_RGB, "%s: failed to open \"%s\" in write mode!", __func__, NSWDB_XML_URL);
-        goto out;
-    }
-    
-    uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_RGB, "Downloading XML database from \"%s\", please wait...", NSWDB_XML_URL);
-    breaks++;
-    
-    appletModeOperationWarning();
-    uiRefreshDisplay();
-    breaks++;
-    
-    changeHomeButtonBlockStatus(true);
-    
-    success = performCurlRequest(curl, NSWDB_XML_URL, nswdbXml, false, true);
-    
-    changeHomeButtonBlockStatus(false);
-    
-out:
-    if (nswdbXml) fclose(nswdbXml);
-    
-    if (success)
-    {
-        remove(NSWDB_XML_PATH);
-        rename(xmlPath, NSWDB_XML_PATH);
-    } else {
-        remove(xmlPath);
-    }
-    
-    if (curl) curl_easy_cleanup(curl);
-    
-    if (R_SUCCEEDED(result)) networkExit();
-    
-    breaks += 2;
-}
-
-static int versionNumCmp(char *ver1, char *ver2)
-{
-    int i, curPart, res;
-    char *token = NULL;
-    
-    // Define a struct for comparison purposes
-    typedef struct {
-        int major;
-        int minor;
-        int build;
-    } version_t;
-    
-    version_t versionNum1, versionNum2;
-    memset(&versionNum1, 0, sizeof(version_t));
-    memset(&versionNum2, 0, sizeof(version_t));
-    
-    // Create copies of the version strings to avoid modifications by strtok()
-    char ver1tok[64] = {'\0'};
-    snprintf(ver1tok, 63, ver1);
-    
-    char ver2tok[64] = {'\0'};
-    snprintf(ver2tok, 63, ver2);
-    
-    // Parse version string 1
-    i = 0;
-    token = strtok(ver1tok, ".");
-    while(token != NULL && i < 3)
-    {
-        curPart = atoi(token);
-        
-        switch(i)
-        {
-            case 0:
-                versionNum1.major = curPart;
-                break;
-            case 1:
-                versionNum1.minor = curPart;
-                break;
-            case 2:
-                versionNum1.build = curPart;
-                break;
-            default:
-                break;
-        }
-        
-        token = strtok(NULL, ".");
-        
-        i++;
-    }
-    
-    // Parse version string 2
-    i = 0;
-    token = strtok(ver2tok, ".");
-    while(token != NULL && i < 3)
-    {
-        curPart = atoi(token);
-        
-        switch(i)
-        {
-            case 0:
-                versionNum2.major = curPart;
-                break;
-            case 1:
-                versionNum2.minor = curPart;
-                break;
-            case 2:
-                versionNum2.build = curPart;
-                break;
-            default:
-                break;
-        }
-        
-        token = strtok(NULL, ".");
-        
-        i++;
-    }
-    
-    // Compare version_t structs
-    if (versionNum1.major == versionNum2.major)
-    {
-        if (versionNum1.minor == versionNum2.minor)
-        {
-            if (versionNum1.build == versionNum2.build)
-            {
-                res = 0;
-            } else
-            if (versionNum1.build < versionNum2.build)
-            {
-                res = -1;
-            } else {
-                res = 1;
-            }
-        } else
-        if (versionNum1.minor < versionNum2.minor)
-        {
-            res = -1;
-        } else {
-            res = 1;
-        }
-    } else
-    if (versionNum1.major < versionNum2.major)
-    {
-        res = -1;
-    } else {
-        res = 1;
-    }
-    
-    return res;
-}
-
-static struct json_object *retrieveJsonObjMemberByNameAndType(struct json_object *jobj, char *memberName, json_type memberType)
-{
-    if (!jobj || !memberName || !strlen(memberName))
-    {
-        uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_ERROR_RGB, "%s: invalid parameters to retrieve member by name and type from JSON object!", __func__);
-        return NULL;
-    }
-    
-    struct json_object *memberObj = NULL;
-    json_type memberObjType;
-    
-    if (!json_object_object_get_ex(jobj, memberName, &memberObj))
-    {
-        uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_ERROR_RGB, "%s: unable to retrieve member \"%s\" from JSON object!", __func__, memberName);
-        return NULL;
-    }
-    
-    memberObjType = json_object_get_type(memberObj);
-    if (memberObjType != memberType)
-    {
-        uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_ERROR_RGB, "%s: invalid type for member \"%s\" in JSON object! (got \"%s\", expected \"%s\")", __func__, memberName, json_type_to_name(memberObjType), json_type_to_name(memberType));
-        return NULL;
-    }
-    
-    return memberObj;
-}
-
-static const char *retrieveJsonObjStrMemberContentsByName(struct json_object *jobj, char *memberName)
-{
-    if (!jobj || !memberName || !strlen(memberName))
-    {
-        uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_ERROR_RGB, "%s: invalid parameters to retrieve string member contents by name from JSON object!", __func__);
-        return NULL;
-    }
-    
-    struct json_object *memberObj = retrieveJsonObjMemberByNameAndType(jobj, memberName, json_type_string);
-    if (!memberObj) return NULL;
-    
-    const char *memberObjStr = json_object_get_string(memberObj);
-    if (!memberObjStr || !strlen(memberObjStr))
-    {
-        uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_ERROR_RGB, "%s: string member \"%s\" from JSON object is empty!", __func__, memberName);
-        return NULL;
-    }
-    
-    return memberObjStr;
-}
-
-static struct json_object *retrieveJsonObjArrayMemberByName(struct json_object *jobj, char *memberName, size_t *outputArrayLength)
-{
-    if (!jobj || !memberName || !strlen(memberName) || !outputArrayLength)
-    {
-        uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_ERROR_RGB, "%s: invalid parameters to retrieve array member by name from JSON object!", __func__);
-        return NULL;
-    }
-    
-    struct json_object *memberObj = retrieveJsonObjMemberByNameAndType(jobj, memberName, json_type_array);
-    if (memberObj) *outputArrayLength = json_object_array_length(memberObj);
-    
-    return memberObj;
-}
-
-static struct json_object *retrieveJsonObjArrayElementByIndex(struct json_object *jobj, size_t idx)
-{
-    if (!jobj || json_object_get_type(jobj) != json_type_array)
-    {
-        uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_ERROR_RGB, "%s: invalid parameters to retrieve element by index from JSON array object!", __func__);
-        return NULL;
-    }
-    
-    struct json_object *memberObjArrayElement = json_object_array_get_idx(jobj, idx);
-    if (!memberObjArrayElement) uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_ERROR_RGB, "%s: unable to retrieve element at index %lu from JSON array object!", __func__, idx);
-    
-    return memberObjArrayElement;
-}
-
-bool updateApplication()
-{
-    if (envIsNso())
-    {
-        uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_ERROR_RGB, "%s: unable to update application. Not running as a NRO.", __func__);
-        breaks += 2;
-        return false;
-    }
-    
-    Result result;
-    CURL *curl = NULL;
-    FILE *nxDumpToolNro = NULL;
-    
-    char releaseTag[32] = {'\0'};
-    bool success = false;
-    
-    size_t i, assetsCnt = 0;
-    struct json_object *jobj = NULL, *assets = NULL;
-    const char *releaseNameObjStr = NULL, *dlUrlObjStr = NULL;
-    
-    char nroPath[NAME_BUF_LEN] = {'\0'};
-    snprintf(nroPath, MAX_CHARACTERS(nroPath), "%s.tmp", (appLaunchPath ? appLaunchPath : NRO_PATH));
-    
-    result = networkInit();
-    if (R_FAILED(result))
-    {
-        uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_ERROR_RGB, "%s: failed to initialize socket! (%08X)", __func__, result);
-        goto out;
-    }
-    
-    curl = curl_easy_init();
-    if (!curl)
-    {
-        uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_ERROR_RGB, "%s: failed to initialize CURL context!", __func__);
-        goto out;
-    }
-    
-    uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_RGB, "Requesting latest release information from \"%s\"...", GITHUB_API_URL);
-    breaks++;
-    
-    uiRefreshDisplay();
-    
-    if (!performCurlRequest(curl, GITHUB_API_URL, NULL, true, false)) goto out;
-    
-    uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_RGB, "Parsing response JSON data...");
-    breaks++;
-    
-    uiRefreshDisplay();
-    
-    jobj = json_tokener_parse(result_buf);
-    if (!jobj)
-    {
-        uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_ERROR_RGB, "%s: unable to parse JSON response!", __func__);
-        goto out;
-    }
-    
-    releaseNameObjStr = retrieveJsonObjStrMemberContentsByName(jobj, GITHUB_API_JSON_RELEASE_NAME);
-    if (!releaseNameObjStr) goto out;
-    
-    snprintf(releaseTag, MAX_CHARACTERS(releaseTag), releaseNameObjStr);
-    
-    uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_RGB, "Latest release: %s.", releaseTag);
-    breaks++;
-    
-    uiRefreshDisplay();
-    
-    // Remove the first character from the release name if it's v/V/r/R
-    if (releaseTag[0] == 'v' || releaseTag[0] == 'V' || releaseTag[0] == 'r' || releaseTag[0] == 'R')
-    {
-        u32 releaseTagLen = strlen(releaseTag);
-        memmove(releaseTag, releaseTag + 1, releaseTagLen - 1);
-        releaseTag[releaseTagLen - 1] = '\0';
-    }
-    
-    // Compare versions
-    if (versionNumCmp(releaseTag, APP_VERSION) <= 0)
-    {
-        uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_RGB, "You already have the latest version!");
-        breaks += 2;
-        
-        // Ask the user if they want to perform a forced update
-        int cur_breaks = breaks;
-        
-        if (yesNoPrompt("Do you want to perform a forced update?"))
-        {
-            // Remove the prompt from the screen
-            breaks = cur_breaks;
-            uiFill(0, STRING_Y_POS(breaks), FB_WIDTH, FB_HEIGHT - STRING_Y_POS(breaks), BG_COLOR_RGB);
-            uiRefreshDisplay();
-        } else {
-            breaks -= 2;
-            goto out;
-        }
-    }
-    
-    assets = retrieveJsonObjArrayMemberByName(jobj, GITHUB_API_JSON_ASSETS, &assetsCnt);
-    if (!assets) goto out;
-    
-    // Cycle through the assets to find the right download URL
-    for(i = 0; i < assetsCnt; i++)
-    {
-        struct json_object *assetElement = retrieveJsonObjArrayElementByIndex(assets, i);
-        if (!assetElement) break;
-        
-        const char *assetName = retrieveJsonObjStrMemberContentsByName(assetElement, GITHUB_API_JSON_ASSETS_NAME);
-        if (!assetName) break;
-        
-        if (!strncmp(assetName, NRO_NAME, strlen(assetName)))
-        {
-            // Found it
-            dlUrlObjStr = retrieveJsonObjStrMemberContentsByName(assetElement, GITHUB_API_JSON_ASSETS_DL_URL);
-            break;
-        }
-    }
-    
-    if (!dlUrlObjStr)
-    {
-        breaks++;
-        uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_ERROR_RGB, "%s: unable to locate NRO download URL!", __func__);
-        goto out;
-    }
-    
-    uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_RGB, "Download URL: \"%s\".", dlUrlObjStr);
-    breaks++;
-    
-    uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_RGB, "Please wait...");
-    breaks++;
-    
-    appletModeOperationWarning();
-    uiRefreshDisplay();
-    breaks++;
-    
-    changeHomeButtonBlockStatus(true);
-    
-    nxDumpToolNro = fopen(nroPath, "wb");
-    if (!nxDumpToolNro)
-    {
-        uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_ERROR_RGB, "%s: failed to open \"%s\" in write mode!", __func__, nroPath);
-        goto out;
-    }
-    
-    curl_easy_reset(curl);
-    
-    success = performCurlRequest(curl, dlUrlObjStr, nxDumpToolNro, true, true);
-    if (!success) goto out;
-    
-    breaks++;
-    uiDrawString(STRING_X_POS, STRING_Y_POS(breaks), FONT_COLOR_SUCCESS_RGB, "Please restart the application to reflect the changes.");
-    
-out:
-    if (nxDumpToolNro) fclose(nxDumpToolNro);
-    
-    if (strlen(nroPath))
-    {
-        if (success)
-        {
-            snprintf(strbuf, MAX_CHARACTERS(strbuf), nroPath);
-            nroPath[strlen(nroPath) - 4] = '\0';
-            
-            remove(nroPath);
-            rename(strbuf, nroPath);
-        } else {
-            remove(nroPath);
-        }
-    }
-    
-    if (jobj) json_object_put(jobj);
-    
-    if (result_buf)
-    {
-        free(result_buf);
-        result_buf = NULL;
-    }
-    
-    if (curl) curl_easy_cleanup(curl);
-    
-    if (R_SUCCEEDED(result)) networkExit();
-    
-    breaks += 2;
-    
-    changeHomeButtonBlockStatus(false);
-    
-    return success;
-}

legacy/util.h

@@ -290,8 +290,4 @@ void gameCardDumpNSWDBCheck(u32 crc);
 
 void noIntroDumpCheck(bool isDigital, u32 crc);
 
-void updateNSWDBXml();
-
-bool updateApplication();
-
 #endif

romfs/i18n/en-US/options_tab.json

@@ -43,6 +43,7 @@
         "is_nso": "The application is running as an NSO. Unable to update.",
         "already_updated": "The application has already been updated. Please reload.",
         "github_json_failed": "Failed to download or parse GitHub release JSON!",
+        "up_to_date": "The application is up to date!",
         "app_updated": "Application successfully updated! Please reload for the changes to take effect."
     }
 }

source/core/nxdt_utils.c

@@ -35,6 +35,14 @@
 /* Reference: https://docs.microsoft.com/en-us/windows/win32/fileio/filesystem-functionality-comparison#limits. */
 #define NT_MAX_FILENAME_LENGTH  255
 
+/* Type definitions. */
+
+typedef struct {
+    u32 major;
+    u32 minor;
+    u32 micro;
+} UtilsApplicationVersion;
+
 /* Global variables. */
 
 static bool g_resourcesInit = false;
@@ -828,6 +836,18 @@ end:
     return path;
 }
 
+bool utilsGetApplicationUpdatedState(void)
+{
+    bool ret = false;
+    SCOPED_LOCK(&g_resourcesMutex) ret = g_appUpdated;
+    return ret;
+}
+
+void utilsSetApplicationUpdatedState(void)
+{
+    SCOPED_LOCK(&g_resourcesMutex) g_appUpdated = true;
+}
+
 bool utilsParseGitHubReleaseJsonData(const char *json_buf, size_t json_buf_size, UtilsGitHubReleaseJsonData *out)
 {
     if (!json_buf || !json_buf_size || !out)
@@ -906,16 +926,46 @@ end:
     return ret;
 }
 
-bool utilsGetApplicationUpdatedState(void)
+bool utilsIsApplicationUpdatable(const char *version, const char *commit_hash)
 {
-    bool ret = false;
+    if (!version || !*version || *version != 'v' || !commit_hash || !*commit_hash)
-    SCOPED_LOCK(&g_resourcesMutex) ret = g_appUpdated;
+    {
-    return ret;
+        LOG_MSG("Invalid parameters!");
+        return false;
     }
     
-void utilsSetApplicationUpdatedState(void)
+    bool ret = false;
+    UtilsApplicationVersion cur_version = { VERSION_MAJOR, VERSION_MINOR, VERSION_MICRO }, new_version = {0};
+    
+    /* Parse version string. */
+    sscanf(version, "v%u.%u.%u", &(new_version.major), &(new_version.minor), &(new_version.micro));
+    
+    /* Compare versions. */
+    if (cur_version.major == new_version.major)
     {
-    SCOPED_LOCK(&g_resourcesMutex) g_appUpdated = true;
+        if (cur_version.minor == new_version.minor)
+        {
+            if (cur_version.micro == new_version.micro)
+            {
+                /* Versions are equal. Let's compare the commit hashes and return true if they're different. */
+                ret = (strncasecmp(commit_hash, GIT_COMMIT, 7) != 0);
+            } else
+            if (cur_version.micro < new_version.micro)
+            {
+                ret = true;
+            }
+        } else
+        if (cur_version.minor < new_version.minor)
+        {
+            ret = true;
+        }
+    } else
+    if (cur_version.major < new_version.major)
+    {
+        ret = true;
+    }
+    
+    return ret;
 }
 
 static void _utilsGetLaunchPath(int program_argc, const char **program_argv)

source/options_tab.cpp

@@ -213,6 +213,9 @@ namespace nxdt::views
             /* Return immediately if the JSON task hasn't finished. */
             if (!this->json_task.isFinished()) return;
             
+            bool pop_view = false;
+            std::string notification = "";
+            
             /* Retrieve task result. */
             nxdt::tasks::DownloadDataResult json_task_result = this->json_task.get();
             this->json_buf = json_task_result.first;
@@ -220,17 +223,37 @@ namespace nxdt::views
             
             /* Parse downloaded JSON object. */
             if (utilsParseGitHubReleaseJsonData(this->json_buf, this->json_buf_size, &(this->json_data)))
+            {
+                /* Check if the application can be updated. */
+                if (utilsIsApplicationUpdatable(this->json_data.version, this->json_data.commit_hash))
                 {
                     /* Display changelog. */
                     this->DisplayChangelog();
                 } else {
-                /* Log downloaded data if we failed to parse it. */
+                    /* Update flag. */
+                    pop_view = true;
+                    
+                    /* Set notification string. */
+                    notification = "options_tab/notifications/up_to_date"_i18n;
+                }
+            } else {
+                /* Log downloaded data. */
                 LOG_DATA(this->json_buf, this->json_buf_size, "Failed to parse GitHub release JSON. Downloaded data:");
                 
-                /* Display notification. */
+                /* Update flag. */
-                brls::Application::notify("options_tab/notifications/github_json_failed"_i18n);
+                pop_view = true;
                 
-                /* Pop view */
+                /* Set notification string. */
+                notification = "options_tab/notifications/github_json_failed"_i18n;
+            }
+            
+            /* Pop view (if needed). */
+            if (pop_view)
+            {
+                /* Display notification. */
+                brls::Application::notify(notification);
+                
+                /* Pop view. */
                 this->onCancel();
             }
         });

todo.txt

@@ -24,7 +24,6 @@ todo:
     usb: improve cancel mechanism
     
     others: fix shrinking bar
-    others: add version / commit hash check before updating app
     others: check todo with grep
     others: dump verification via nswdb / no-intro
     others: fatfs browser for emmc partitions