Add Conda package registry (#22262)

This PR adds a [Conda](https://conda.io/) package registry.

Author: KN4CK3R

custom/conf/app.example.ini

@@ -2458,6 +2458,8 @@ ROUTER = console
 ;LIMIT_SIZE_COMPOSER = -1
 ;; Maximum size of a Conan upload (`-1` means no limits, format `1000`, `1 MB`, `1 GiB`)
 ;LIMIT_SIZE_CONAN = -1
+;; Maximum size of a Conda upload (`-1` means no limits, format `1000`, `1 MB`, `1 GiB`)
+;LIMIT_SIZE_CONDA = -1
 ;; Maximum size of a Container upload (`-1` means no limits, format `1000`, `1 MB`, `1 GiB`)
 ;LIMIT_SIZE_CONTAINER = -1
 ;; Maximum size of a Generic upload (`-1` means no limits, format `1000`, `1 MB`, `1 GiB`)

docs/content/doc/advanced/config-cheat-sheet.en-us.md

@@ -1214,6 +1214,7 @@ Task queue configuration has been moved to `queue.task`. However, the below conf
 - `LIMIT_TOTAL_OWNER_SIZE`: **-1**: Maximum size of packages a single owner can use (`-1` means no limits, format `1000`, `1 MB`, `1 GiB`)
 - `LIMIT_SIZE_COMPOSER`: **-1**: Maximum size of a Composer upload (`-1` means no limits, format `1000`, `1 MB`, `1 GiB`)
 - `LIMIT_SIZE_CONAN`: **-1**: Maximum size of a Conan upload (`-1` means no limits, format `1000`, `1 MB`, `1 GiB`)
+- `LIMIT_SIZE_CONDA`: **-1**: Maximum size of a Conda upload (`-1` means no limits, format `1000`, `1 MB`, `1 GiB`)
 - `LIMIT_SIZE_CONTAINER`: **-1**: Maximum size of a Container upload (`-1` means no limits, format `1000`, `1 MB`, `1 GiB`)
 - `LIMIT_SIZE_GENERIC`: **-1**: Maximum size of a Generic upload (`-1` means no limits, format `1000`, `1 MB`, `1 GiB`)
 - `LIMIT_SIZE_HELM`: **-1**: Maximum size of a Helm upload (`-1` means no limits, format `1000`, `1 MB`, `1 GiB`)

docs/content/doc/packages/conda.en-us.md

@@ -0,0 +1,85 @@
+---
+date: "2022-12-28T00:00:00+00:00"
+title: "Conda Packages Repository"
+slug: "packages/conda"
+draft: false
+toc: false
+menu:
+  sidebar:
+    parent: "packages"
+    name: "Conda"
+    weight: 25
+    identifier: "conda"
+---
+
+# Conda Packages Repository
+
+Publish [Conda](https://docs.conda.io/en/latest/) packages for your user or organization.
+
+**Table of Contents**
+
+{{< toc >}}
+
+## Requirements
+
+To work with the Conda package registry, you need to use [conda](https://docs.conda.io/projects/conda/en/stable/user-guide/install/index.html).
+
+## Configuring the package registry
+
+To register the package registry and provide credentials, edit your `.condarc` file:
+
+```yaml
+channel_alias: https://gitea.example.com/api/packages/{owner}/conda
+channels:
+  - https://gitea.example.com/api/packages/{owner}/conda
+default_channels:
+  - https://gitea.example.com/api/packages/{owner}/conda
+```
+
+| Placeholder  | Description |
+| ------------ | ----------- |
+| `owner`      | The owner of the package. |
+
+See the [official documentation](https://conda.io/projects/conda/en/latest/user-guide/configuration/use-condarc.html) for explanations of the individual settings.
+
+If you need to provide credentials, you may embed them as part of the channel url (`https://user:password@gitea.example.com/...`).
+
+## Publish a package
+
+To publish a package, perform a HTTP PUT operation with the package content in the request body.
+
+```
+PUT https://gitea.example.com/api/packages/{owner}/conda/{channel}/{filename}
+```
+
+| Placeholder  | Description |
+| ------------ | ----------- |
+| `owner`      | The owner of the package. |
+| `channel`    | The [channel](https://conda.io/projects/conda/en/latest/user-guide/concepts/channels.html) of the package. (optional) |
+| `filename`   | The name of the file. |
+
+Example request using HTTP Basic authentication:
+
+```shell
+curl --user your_username:your_password_or_token \
+     --upload-file path/to/package-1.0.conda \
+     https://gitea.example.com/api/packages/testuser/conda/package-1.0.conda
+```
+
+You cannot publish a package if a package of the same name and version already exists. You must delete the existing package first.
+
+## Install a package
+
+To install a package from the package registry, execute one of the following commands:
+
+```shell
+conda install {package_name}
+conda install {package_name}={package_version}
+conda install -c {channel} {package_name}
+```
+
+| Parameter         | Description |
+| ----------------- | ----------- |
+| `package_name`    | The package name. |
+| `package_version` | The package version. |
+| `channel`         | The channel of the package. (optional) |

docs/content/doc/packages/overview.en-us.md

@@ -28,6 +28,7 @@ The following package managers are currently supported:
 | ---- | -------- | -------------- |
 | [Composer]({{< relref "doc/packages/composer.en-us.md" >}}) | PHP | `composer` |
 | [Conan]({{< relref "doc/packages/conan.en-us.md" >}}) | C++ | `conan` |
+| [Conda]({{< relref "doc/packages/conda.en-us.md" >}}) | - | `conda` |
 | [Container]({{< relref "doc/packages/container.en-us.md" >}}) | - | any OCI compliant client |
 | [Generic]({{< relref "doc/packages/generic.en-us.md" >}}) | - | any HTTP client |
 | [Helm]({{< relref "doc/packages/helm.en-us.md" >}}) | - | any HTTP client, `cm-push` |

go.mod

@@ -26,6 +26,7 @@ require (
 	github.com/dimiro1/reply v0.0.0-20200315094148-d0136a4c9e21
 	github.com/djherbis/buffer v1.2.0
 	github.com/djherbis/nio/v3 v3.0.1
+	github.com/dsnet/compress v0.0.2-0.20210315054119-f66993602bf5
 	github.com/dustin/go-humanize v1.0.0
 	github.com/editorconfig/editorconfig-core-go/v2 v2.5.1
 	github.com/emersion/go-imap v1.2.1
@@ -161,7 +162,6 @@ require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/dlclark/regexp2 v1.7.0 // indirect
-	github.com/dsnet/compress v0.0.2-0.20210315054119-f66993602bf5 // indirect
 	github.com/emersion/go-sasl v0.0.0-20200509203442-7bfe0ed36a21 // indirect
 	github.com/fatih/color v1.13.0 // indirect
 	github.com/felixge/httpsnoop v1.0.3 // indirect

models/packages/conda/search.go

@@ -0,0 +1,63 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package conda
+
+import (
+	"context"
+	"strings"
+
+	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/packages"
+	conda_module "code.gitea.io/gitea/modules/packages/conda"
+
+	"xorm.io/builder"
+)
+
+type FileSearchOptions struct {
+	OwnerID  int64
+	Channel  string
+	Subdir   string
+	Filename string
+}
+
+// SearchFiles gets all files matching the search options
+func SearchFiles(ctx context.Context, opts *FileSearchOptions) ([]*packages.PackageFile, error) {
+	var cond builder.Cond = builder.Eq{
+		"package.type":                packages.TypeConda,
+		"package.owner_id":            opts.OwnerID,
+		"package_version.is_internal": false,
+	}
+
+	if opts.Filename != "" {
+		cond = cond.And(builder.Eq{
+			"package_file.lower_name": strings.ToLower(opts.Filename),
+		})
+	}
+
+	var versionPropsCond builder.Cond = builder.Eq{
+		"package_property.ref_type": packages.PropertyTypePackage,
+		"package_property.name":     conda_module.PropertyChannel,
+		"package_property.value":    opts.Channel,
+	}
+
+	cond = cond.And(builder.In("package.id", builder.Select("package_property.ref_id").Where(versionPropsCond).From("package_property")))
+
+	var filePropsCond builder.Cond = builder.Eq{
+		"package_property.ref_type": packages.PropertyTypeFile,
+		"package_property.name":     conda_module.PropertySubdir,
+		"package_property.value":    opts.Subdir,
+	}
+
+	cond = cond.And(builder.In("package_file.id", builder.Select("package_property.ref_id").Where(filePropsCond).From("package_property")))
+
+	sess := db.GetEngine(ctx).
+		Select("package_file.*").
+		Table("package_file").
+		Join("INNER", "package_version", "package_version.id = package_file.version_id").
+		Join("INNER", "package", "package.id = package_version.package_id").
+		Where(cond)
+
+	pfs := make([]*packages.PackageFile, 0, 10)
+	return pfs, sess.Find(&pfs)
+}

models/packages/descriptor.go

@@ -13,6 +13,7 @@ import (
 	"code.gitea.io/gitea/modules/json"
 	"code.gitea.io/gitea/modules/packages/composer"
 	"code.gitea.io/gitea/modules/packages/conan"
+	"code.gitea.io/gitea/modules/packages/conda"
 	"code.gitea.io/gitea/modules/packages/container"
 	"code.gitea.io/gitea/modules/packages/helm"
 	"code.gitea.io/gitea/modules/packages/maven"
@@ -132,6 +133,8 @@ func GetPackageDescriptor(ctx context.Context, pv *PackageVersion) (*PackageDesc
 		metadata = &composer.Metadata{}
 	case TypeConan:
 		metadata = &conan.Metadata{}
+	case TypeConda:
+		metadata = &conda.VersionMetadata{}
 	case TypeContainer:
 		metadata = &container.Metadata{}
 	case TypeGeneric:

models/packages/package.go

@@ -32,6 +32,7 @@ type Type string
 const (
 	TypeComposer  Type = "composer"
 	TypeConan     Type = "conan"
+	TypeConda     Type = "conda"
 	TypeContainer Type = "container"
 	TypeGeneric   Type = "generic"
 	TypeHelm      Type = "helm"
@@ -47,6 +48,7 @@ const (
 var TypeList = []Type{
 	TypeComposer,
 	TypeConan,
+	TypeConda,
 	TypeContainer,
 	TypeGeneric,
 	TypeHelm,
@@ -66,6 +68,8 @@ func (pt Type) Name() string {
 		return "Composer"
 	case TypeConan:
 		return "Conan"
+	case TypeConda:
+		return "Conda"
 	case TypeContainer:
 		return "Container"
 	case TypeGeneric:
@@ -97,6 +101,8 @@ func (pt Type) SVGName() string {
 		return "gitea-composer"
 	case TypeConan:
 		return "gitea-conan"
+	case TypeConda:
+		return "gitea-conda"
 	case TypeContainer:
 		return "octicon-container"
 	case TypeGeneric: