feat: allow trying to use multiple hash types

launcher/modplatform/ModIndex.cpp

@@ -1,10 +1,12 @@
 #include "modplatform/ModIndex.h"
 
-namespace ModPlatform{
+#include <QCryptographicHash>
+
+namespace ModPlatform {
 
 auto ProviderCapabilities::name(Provider p) -> const char*
 {
-    switch(p){
+    switch (p) {
         case Provider::MODRINTH:
             return "modrinth";
         case Provider::FLAME:
@@ -12,13 +14,45 @@ auto ProviderCapabilities::name(Provider p) -> const char*
     }
     return {};
 }
-auto ProviderCapabilities::hashType(Provider p) -> QString
+auto ProviderCapabilities::readableName(Provider p) -> QString
 {
-    switch(p){
+    switch (p) {
         case Provider::MODRINTH:
-        return "sha512";
+            return "Modrinth";
         case Provider::FLAME:
-        return "murmur2";
+            return "CurseForge";
+    }
+    return {};
+}
+auto ProviderCapabilities::hashType(Provider p) -> QStringList
+{
+    switch (p) {
+        case Provider::MODRINTH:
+            return { "sha512", "sha1" };
+        case Provider::FLAME:
+            return { "murmur2" };
+    }
+    return {};
+}
+auto ProviderCapabilities::hash(Provider p, QByteArray& data, QString type) -> QByteArray
+{
+    switch (p) {
+        case Provider::MODRINTH: {
+            // NOTE: Data is the result of reading the entire JAR file!
+
+            // If 'type' was specified, we use that
+            if (!type.isEmpty() && hashType(p).contains(type)) {
+                if (type == "sha512")
+                    return QCryptographicHash::hash(data, QCryptographicHash::Sha512);
+                else if (type == "sha1")
+                    return QCryptographicHash::hash(data, QCryptographicHash::Sha1);
+            }
+
+            return QCryptographicHash::hash(data, QCryptographicHash::Sha512);
+        }
+        case Provider::FLAME:
+            // TODO
+            break;
     }
     return {};
 }

launcher/modplatform/ModIndex.h

@@ -16,7 +16,9 @@ enum class Provider {
 class ProviderCapabilities {
    public:
     auto name(Provider) -> const char*;
-    auto hashType(Provider) -> QString;
+    auto readableName(Provider) -> QString;
+    auto hashType(Provider) -> QStringList;
+    auto hash(Provider, QByteArray&, QString type = "") -> QByteArray;
 };
 
 struct ModpackAuthor {
@@ -33,6 +35,7 @@ struct IndexedVersion {
     QString date;
     QString fileName;
     QVector<QString> loaders = {};
+    QString hash_type;
     QString hash;
 };
 

launcher/modplatform/flame/FlameModIndex.cpp

@@ -64,8 +64,14 @@ void FlameMod::loadIndexedPackVersions(ModPlatform::IndexedPack& pack,
 
         auto hash_list = Json::ensureArray(obj, "hashes");
         if(!hash_list.isEmpty()){
-            if(hash_list.contains(ProviderCaps.hashType(ModPlatform::Provider::FLAME)))
+            auto hash_types = ProviderCaps.hashType(ModPlatform::Provider::FLAME);
+            for(auto& hash_type : hash_types) {
+                if(hash_list.contains(hash_type)) {
                     file.hash = Json::requireString(hash_list, "value");
+                    file.hash_type = hash_type;
+                    break;
+                }
+            }
         }
 
         unsortedVersions.append(file);

launcher/modplatform/modrinth/ModrinthPackIndex.cpp

@@ -116,8 +116,14 @@ auto Modrinth::loadIndexedPackVersion(QJsonObject &obj) -> ModPlatform::IndexedV
         file.downloadUrl = Json::requireString(parent, "url");
         file.fileName = Json::requireString(parent, "filename");
         auto hash_list = Json::requireObject(parent, "hashes");
-        if (hash_list.contains(ProviderCaps.hashType(ModPlatform::Provider::MODRINTH)))
-            file.hash = Json::requireString(hash_list, ProviderCaps.hashType(ModPlatform::Provider::MODRINTH));
+        auto hash_types = ProviderCaps.hashType(ModPlatform::Provider::MODRINTH);
+        for (auto& hash_type : hash_types) {
+            if (hash_list.contains(hash_type)) {
+                file.hash = Json::requireString(hash_list, hash_type);
+                file.hash_type = hash_type;
+                break;
+            }
+        }
 
         return file;
     }

launcher/modplatform/packwiz/Packwiz.cpp

@@ -29,7 +29,7 @@ auto V1::createModFormat(QDir& index_dir, ModPlatform::IndexedPack& mod_pack, Mo
     mod.filename = mod_version.fileName;
 
     mod.url = mod_version.downloadUrl;
-    mod.hash_format = ProviderCaps.hashType(mod_pack.provider);
+    mod.hash_format = mod_version.hash_type;
     mod.hash = mod_version.hash;
 
     mod.provider = mod_pack.provider;