From 6ba9ff7b4899f1057ac6e41947951da3e43b6918 Mon Sep 17 00:00:00 2001
From: KN4CK3R <admin@oldschoolhack.me>
Date: Wed, 1 Feb 2023 19:30:39 +0100
Subject: [PATCH] Add Conda package registry (#22262)

This PR adds a [Conda](https://conda.io/) package registry.
---
 custom/conf/app.example.ini                   |   2 +
 .../doc/advanced/config-cheat-sheet.en-us.md  |   1 +
 docs/content/doc/packages/conda.en-us.md      |  85 +++++
 docs/content/doc/packages/overview.en-us.md   |   1 +
 go.mod                                        |   2 +-
 models/packages/conda/search.go               |  63 ++++
 models/packages/descriptor.go                 |   3 +
 models/packages/package.go                    |   6 +
 modules/packages/conda/metadata.go            | 243 ++++++++++++++
 modules/packages/conda/metadata_test.go       | 150 +++++++++
 modules/setting/packages.go                   |   2 +
 options/locale/locale_en-US.ini               |   5 +
 public/img/svg/gitea-conda.svg                |   1 +
 routers/api/packages/api.go                   |  38 +++
 routers/api/packages/conda/conda.go           | 306 ++++++++++++++++++
 routers/api/v1/packages/package.go            |   2 +-
 services/forms/package_form.go                |   2 +-
 services/packages/packages.go                 |   2 +
 templates/package/content/conda.tmpl          |  30 ++
 templates/package/metadata/conda.tmpl         |   6 +
 templates/package/view.tmpl                   |   2 +
 templates/swagger/v1_json.tmpl                |   1 +
 tests/integration/api_packages_conda_test.go  | 274 ++++++++++++++++
 web_src/svg/gitea-conda.svg                   |  20 ++
 24 files changed, 1244 insertions(+), 3 deletions(-)
 create mode 100644 docs/content/doc/packages/conda.en-us.md
 create mode 100644 models/packages/conda/search.go
 create mode 100644 modules/packages/conda/metadata.go
 create mode 100644 modules/packages/conda/metadata_test.go
 create mode 100644 public/img/svg/gitea-conda.svg
 create mode 100644 routers/api/packages/conda/conda.go
 create mode 100644 templates/package/content/conda.tmpl
 create mode 100644 templates/package/metadata/conda.tmpl
 create mode 100644 tests/integration/api_packages_conda_test.go
 create mode 100644 web_src/svg/gitea-conda.svg

diff --git a/custom/conf/app.example.ini b/custom/conf/app.example.ini
index daf67ef4c6..77efe1417b 100644
--- a/custom/conf/app.example.ini
+++ b/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`)
diff --git a/docs/content/doc/advanced/config-cheat-sheet.en-us.md b/docs/content/doc/advanced/config-cheat-sheet.en-us.md
index 4ef630b6be..441bb824ad 100644
--- a/docs/content/doc/advanced/config-cheat-sheet.en-us.md
+++ b/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`)
diff --git a/docs/content/doc/packages/conda.en-us.md b/docs/content/doc/packages/conda.en-us.md
new file mode 100644
index 0000000000..8b82847590
--- /dev/null
+++ b/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) |
diff --git a/docs/content/doc/packages/overview.en-us.md b/docs/content/doc/packages/overview.en-us.md
index b12155e14d..9a736c1e56 100644
--- a/docs/content/doc/packages/overview.en-us.md
+++ b/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` |
diff --git a/go.mod b/go.mod
index b3d4040323..a929508e0d 100644
--- a/go.mod
+++ b/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
diff --git a/models/packages/conda/search.go b/models/packages/conda/search.go
new file mode 100644
index 0000000000..887441e3b2
--- /dev/null
+++ b/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)
+}
diff --git a/models/packages/descriptor.go b/models/packages/descriptor.go
index 34f1cad87d..3b36ee2266 100644
--- a/models/packages/descriptor.go
+++ b/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:
diff --git a/models/packages/package.go b/models/packages/package.go
index a804f35de3..0015953d81 100644
--- a/models/packages/package.go
+++ b/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:
diff --git a/modules/packages/conda/metadata.go b/modules/packages/conda/metadata.go
new file mode 100644
index 0000000000..02dbf313ba
--- /dev/null
+++ b/modules/packages/conda/metadata.go
@@ -0,0 +1,243 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package conda
+
+import (
+	"archive/tar"
+	"archive/zip"
+	"compress/bzip2"
+	"io"
+	"strings"
+
+	"code.gitea.io/gitea/modules/json"
+	"code.gitea.io/gitea/modules/util"
+	"code.gitea.io/gitea/modules/validation"
+
+	"github.com/klauspost/compress/zstd"
+)
+
+var (
+	ErrInvalidStructure = util.SilentWrap{Message: "package structure is invalid", Err: util.ErrInvalidArgument}
+	ErrInvalidName      = util.SilentWrap{Message: "package name is invalid", Err: util.ErrInvalidArgument}
+	ErrInvalidVersion   = util.SilentWrap{Message: "package version is invalid", Err: util.ErrInvalidArgument}
+)
+
+const (
+	PropertyName     = "conda.name"
+	PropertyChannel  = "conda.channel"
+	PropertySubdir   = "conda.subdir"
+	PropertyMetadata = "conda.metdata"
+)
+
+// Package represents a Conda package
+type Package struct {
+	Name            string
+	Version         string
+	Subdir          string
+	VersionMetadata *VersionMetadata
+	FileMetadata    *FileMetadata
+}
+
+// VersionMetadata represents the metadata of a Conda package
+type VersionMetadata struct {
+	Description      string `json:"description,omitempty"`
+	Summary          string `json:"summary,omitempty"`
+	ProjectURL       string `json:"project_url,omitempty"`
+	RepositoryURL    string `json:"repository_url,omitempty"`
+	DocumentationURL string `json:"documentation_url,omitempty"`
+	License          string `json:"license,omitempty"`
+	LicenseFamily    string `json:"license_family,omitempty"`
+}
+
+// FileMetadata represents the metadata of a Conda package file
+type FileMetadata struct {
+	IsCondaPackage bool     `json:"is_conda"`
+	Architecture   string   `json:"architecture,omitempty"`
+	NoArch         string   `json:"noarch,omitempty"`
+	Build          string   `json:"build,omitempty"`
+	BuildNumber    int64    `json:"build_number,omitempty"`
+	Dependencies   []string `json:"dependencies,omitempty"`
+	Platform       string   `json:"platform,omitempty"`
+	Timestamp      int64    `json:"timestamp,omitempty"`
+}
+
+type index struct {
+	Name          string   `json:"name"`
+	Version       string   `json:"version"`
+	Architecture  string   `json:"arch"`
+	NoArch        string   `json:"noarch"`
+	Build         string   `json:"build"`
+	BuildNumber   int64    `json:"build_number"`
+	Dependencies  []string `json:"depends"`
+	License       string   `json:"license"`
+	LicenseFamily string   `json:"license_family"`
+	Platform      string   `json:"platform"`
+	Subdir        string   `json:"subdir"`
+	Timestamp     int64    `json:"timestamp"`
+}
+
+type about struct {
+	Description      string `json:"description"`
+	Summary          string `json:"summary"`
+	ProjectURL       string `json:"home"`
+	RepositoryURL    string `json:"dev_url"`
+	DocumentationURL string `json:"doc_url"`
+}
+
+type ReaderAndReaderAt interface {
+	io.Reader
+	io.ReaderAt
+}
+
+// ParsePackageBZ2 parses the Conda package file compressed with bzip2
+func ParsePackageBZ2(r io.Reader) (*Package, error) {
+	gzr := bzip2.NewReader(r)
+
+	return parsePackageTar(gzr)
+}
+
+// ParsePackageConda parses the Conda package file compressed with zip and zstd
+func ParsePackageConda(r io.ReaderAt, size int64) (*Package, error) {
+	zr, err := zip.NewReader(r, size)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, file := range zr.File {
+		if strings.HasPrefix(file.Name, "info-") && strings.HasSuffix(file.Name, ".tar.zst") {
+			f, err := zr.Open(file.Name)
+			if err != nil {
+				return nil, err
+			}
+			defer f.Close()
+
+			dec, err := zstd.NewReader(f)
+			if err != nil {
+				return nil, err
+			}
+			defer dec.Close()
+
+			p, err := parsePackageTar(dec)
+			if p != nil {
+				p.FileMetadata.IsCondaPackage = true
+			}
+			return p, err
+		}
+	}
+
+	return nil, ErrInvalidStructure
+}
+
+func parsePackageTar(r io.Reader) (*Package, error) {
+	var i *index
+	var a *about
+
+	tr := tar.NewReader(r)
+	for {
+		hdr, err := tr.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return nil, err
+		}
+
+		if hdr.Typeflag != tar.TypeReg {
+			continue
+		}
+
+		if hdr.Name == "info/index.json" {
+			if err := json.NewDecoder(tr).Decode(&i); err != nil {
+				return nil, err
+			}
+
+			if !checkName(i.Name) {
+				return nil, ErrInvalidName
+			}
+
+			if !checkVersion(i.Version) {
+				return nil, ErrInvalidVersion
+			}
+
+			if a != nil {
+				break // stop loop if both files were found
+			}
+		} else if hdr.Name == "info/about.json" {
+			if err := json.NewDecoder(tr).Decode(&a); err != nil {
+				return nil, err
+			}
+
+			if !validation.IsValidURL(a.ProjectURL) {
+				a.ProjectURL = ""
+			}
+			if !validation.IsValidURL(a.RepositoryURL) {
+				a.RepositoryURL = ""
+			}
+			if !validation.IsValidURL(a.DocumentationURL) {
+				a.DocumentationURL = ""
+			}
+
+			if i != nil {
+				break // stop loop if both files were found
+			}
+		}
+	}
+
+	if i == nil {
+		return nil, ErrInvalidStructure
+	}
+	if a == nil {
+		a = &about{}
+	}
+
+	return &Package{
+		Name:    i.Name,
+		Version: i.Version,
+		Subdir:  i.Subdir,
+		VersionMetadata: &VersionMetadata{
+			License:          i.License,
+			LicenseFamily:    i.LicenseFamily,
+			Description:      a.Description,
+			Summary:          a.Summary,
+			ProjectURL:       a.ProjectURL,
+			RepositoryURL:    a.RepositoryURL,
+			DocumentationURL: a.DocumentationURL,
+		},
+		FileMetadata: &FileMetadata{
+			Architecture: i.Architecture,
+			NoArch:       i.NoArch,
+			Build:        i.Build,
+			BuildNumber:  i.BuildNumber,
+			Dependencies: i.Dependencies,
+			Platform:     i.Platform,
+			Timestamp:    i.Timestamp,
+		},
+	}, nil
+}
+
+// https://github.com/conda/conda-build/blob/db9a728a9e4e6cfc895637ca3221117970fc2663/conda_build/metadata.py#L1393
+func checkName(name string) bool {
+	if name == "" {
+		return false
+	}
+	if name != strings.ToLower(name) {
+		return false
+	}
+	return !checkBadCharacters(name, "!")
+}
+
+// https://github.com/conda/conda-build/blob/db9a728a9e4e6cfc895637ca3221117970fc2663/conda_build/metadata.py#L1403
+func checkVersion(version string) bool {
+	if version == "" {
+		return false
+	}
+	return !checkBadCharacters(version, "-")
+}
+
+func checkBadCharacters(s, additional string) bool {
+	if strings.ContainsAny(s, "=@#$%^&*:;\"'\\|<>?/ ") {
+		return true
+	}
+	return strings.ContainsAny(s, additional)
+}
diff --git a/modules/packages/conda/metadata_test.go b/modules/packages/conda/metadata_test.go
new file mode 100644
index 0000000000..2038ca370c
--- /dev/null
+++ b/modules/packages/conda/metadata_test.go
@@ -0,0 +1,150 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package conda
+
+import (
+	"archive/tar"
+	"archive/zip"
+	"bytes"
+	"io"
+	"testing"
+
+	"github.com/dsnet/compress/bzip2"
+	"github.com/klauspost/compress/zstd"
+	"github.com/stretchr/testify/assert"
+)
+
+const (
+	packageName      = "gitea"
+	packageVersion   = "1.0.1"
+	description      = "Package Description"
+	projectURL       = "https://gitea.io"
+	repositoryURL    = "https://gitea.io/gitea/gitea"
+	documentationURL = "https://docs.gitea.io"
+)
+
+func TestParsePackage(t *testing.T) {
+	createArchive := func(files map[string][]byte) *bytes.Buffer {
+		var buf bytes.Buffer
+		tw := tar.NewWriter(&buf)
+		for filename, content := range files {
+			hdr := &tar.Header{
+				Name: filename,
+				Mode: 0o600,
+				Size: int64(len(content)),
+			}
+			tw.WriteHeader(hdr)
+			tw.Write(content)
+		}
+		tw.Close()
+		return &buf
+	}
+
+	t.Run("MissingIndexFile", func(t *testing.T) {
+		buf := createArchive(map[string][]byte{"dummy.txt": {}})
+
+		p, err := parsePackageTar(buf)
+		assert.Nil(t, p)
+		assert.ErrorIs(t, err, ErrInvalidStructure)
+	})
+
+	t.Run("MissingAboutFile", func(t *testing.T) {
+		buf := createArchive(map[string][]byte{"info/index.json": []byte(`{"name":"name","version":"1.0"}`)})
+
+		p, err := parsePackageTar(buf)
+		assert.NotNil(t, p)
+		assert.NoError(t, err)
+
+		assert.Equal(t, "name", p.Name)
+		assert.Equal(t, "1.0", p.Version)
+		assert.Empty(t, p.VersionMetadata.ProjectURL)
+	})
+
+	t.Run("InvalidName", func(t *testing.T) {
+		for _, name := range []string{"", "name!", "nAMe"} {
+			buf := createArchive(map[string][]byte{"info/index.json": []byte(`{"name":"` + name + `","version":"1.0"}`)})
+
+			p, err := parsePackageTar(buf)
+			assert.Nil(t, p)
+			assert.ErrorIs(t, err, ErrInvalidName)
+		}
+	})
+
+	t.Run("InvalidVersion", func(t *testing.T) {
+		for _, version := range []string{"", "1.0-2"} {
+			buf := createArchive(map[string][]byte{"info/index.json": []byte(`{"name":"name","version":"` + version + `"}`)})
+
+			p, err := parsePackageTar(buf)
+			assert.Nil(t, p)
+			assert.ErrorIs(t, err, ErrInvalidVersion)
+		}
+	})
+
+	t.Run("Valid", func(t *testing.T) {
+		buf := createArchive(map[string][]byte{
+			"info/index.json": []byte(`{"name":"` + packageName + `","version":"` + packageVersion + `","subdir":"linux-64"}`),
+			"info/about.json": []byte(`{"description":"` + description + `","dev_url":"` + repositoryURL + `","doc_url":"` + documentationURL + `","home":"` + projectURL + `"}`),
+		})
+
+		p, err := parsePackageTar(buf)
+		assert.NotNil(t, p)
+		assert.NoError(t, err)
+
+		assert.Equal(t, packageName, p.Name)
+		assert.Equal(t, packageVersion, p.Version)
+		assert.Equal(t, "linux-64", p.Subdir)
+		assert.Equal(t, description, p.VersionMetadata.Description)
+		assert.Equal(t, projectURL, p.VersionMetadata.ProjectURL)
+		assert.Equal(t, repositoryURL, p.VersionMetadata.RepositoryURL)
+		assert.Equal(t, documentationURL, p.VersionMetadata.DocumentationURL)
+	})
+
+	t.Run(".tar.bz2", func(t *testing.T) {
+		tarArchive := createArchive(map[string][]byte{
+			"info/index.json": []byte(`{"name":"` + packageName + `","version":"` + packageVersion + `"}`),
+		})
+
+		var buf bytes.Buffer
+		bw, _ := bzip2.NewWriter(&buf, nil)
+		io.Copy(bw, tarArchive)
+		bw.Close()
+
+		br := bytes.NewReader(buf.Bytes())
+
+		p, err := ParsePackageBZ2(br)
+		assert.NotNil(t, p)
+		assert.NoError(t, err)
+
+		assert.Equal(t, packageName, p.Name)
+		assert.Equal(t, packageVersion, p.Version)
+		assert.False(t, p.FileMetadata.IsCondaPackage)
+	})
+
+	t.Run(".conda", func(t *testing.T) {
+		tarArchive := createArchive(map[string][]byte{
+			"info/index.json": []byte(`{"name":"` + packageName + `","version":"` + packageVersion + `"}`),
+		})
+
+		var infoBuf bytes.Buffer
+		zsw, _ := zstd.NewWriter(&infoBuf)
+		io.Copy(zsw, tarArchive)
+		zsw.Close()
+
+		var buf bytes.Buffer
+		zpw := zip.NewWriter(&buf)
+		w, _ := zpw.Create("info-x.tar.zst")
+		w.Write(infoBuf.Bytes())
+		zpw.Close()
+
+		br := bytes.NewReader(buf.Bytes())
+
+		p, err := ParsePackageConda(br, int64(br.Len()))
+		assert.NotNil(t, p)
+		assert.NoError(t, err)
+
+		assert.Equal(t, packageName, p.Name)
+		assert.Equal(t, packageVersion, p.Version)
+		assert.True(t, p.FileMetadata.IsCondaPackage)
+	})
+}
diff --git a/modules/setting/packages.go b/modules/setting/packages.go
index 120fbb5bda..d0cd80aa03 100644
--- a/modules/setting/packages.go
+++ b/modules/setting/packages.go
@@ -27,6 +27,7 @@ var (
 		LimitTotalOwnerSize  int64
 		LimitSizeComposer    int64
 		LimitSizeConan       int64
+		LimitSizeConda       int64
 		LimitSizeContainer   int64
 		LimitSizeGeneric     int64
 		LimitSizeHelm        int64
@@ -66,6 +67,7 @@ func newPackages() {
 	Packages.LimitTotalOwnerSize = mustBytes(sec, "LIMIT_TOTAL_OWNER_SIZE")
 	Packages.LimitSizeComposer = mustBytes(sec, "LIMIT_SIZE_COMPOSER")
 	Packages.LimitSizeConan = mustBytes(sec, "LIMIT_SIZE_CONAN")
+	Packages.LimitSizeConda = mustBytes(sec, "LIMIT_SIZE_CONDA")
 	Packages.LimitSizeContainer = mustBytes(sec, "LIMIT_SIZE_CONTAINER")
 	Packages.LimitSizeGeneric = mustBytes(sec, "LIMIT_SIZE_GENERIC")
 	Packages.LimitSizeHelm = mustBytes(sec, "LIMIT_SIZE_HELM")
diff --git a/options/locale/locale_en-US.ini b/options/locale/locale_en-US.ini
index 8a48a68b17..8465660cc0 100644
--- a/options/locale/locale_en-US.ini
+++ b/options/locale/locale_en-US.ini
@@ -3159,6 +3159,11 @@ conan.details.repository = Repository
 conan.registry = Setup this registry from the command line:
 conan.install = To install the package using Conan, run the following command:
 conan.documentation = For more information on the Conan registry, see <a target="_blank" rel="noopener noreferrer" href="https://docs.gitea.io/en-us/packages/conan/">the documentation</a>.
+conda.registry = Setup this registry as a Conda repository in your <code>.condarc</code> file:
+conda.install = To install the package using Conda, run the following command:
+conda.documentation = For more information on the Conda registry, see <a target="_blank" rel="noopener noreferrer" href="https://docs.gitea.io/en-us/packages/conda/">the documentation</a>.
+conda.details.repository_site = Repository Site
+conda.details.documentation_site = Documentation Site
 container.details.type = Image Type
 container.details.platform = Platform
 container.details.repository_site = Repository Site
diff --git a/public/img/svg/gitea-conda.svg b/public/img/svg/gitea-conda.svg
new file mode 100644
index 0000000000..cd4817adf2
--- /dev/null
+++ b/public/img/svg/gitea-conda.svg
@@ -0,0 +1 @@
+<svg viewBox="0 0 32 32" class="svg gitea-conda" width="16" height="16" aria-hidden="true"><path fill="#43b02a" fill-rule="evenodd" stroke="#43b02a" stroke-width=".068" d="M16.559 8.137a7.2 7.2 0 0 0-1.234-1.708 7.586 7.586 0 0 0-.19 2.183 5.161 5.161 0 0 1 1.424-.475ZM13.617 9.466a7.992 7.992 0 0 0-1.993-1.2 8.123 8.123 0 0 0 .885 2.183c0 .063.443-.475 1.108-.981ZM17.445 7.188a9.143 9.143 0 0 1 1.3-2.246A7.585 7.585 0 0 0 17 2.854a8.35 8.35 0 0 0-1.3 2.278 8.451 8.451 0 0 1 1.74 2.056ZM11.592 11.744a10.276 10.276 0 0 0-2.692-.158 7.478 7.478 0 0 0 1.93 1.9 6.858 6.858 0 0 1 .759-1.74zM6.878 15.161a7.44 7.44 0 0 1 2.942-1.139 10.019 10.019 0 0 1-2.056-2.278 7.639 7.639 0 0 0-2.847 1.2 7.11 7.11 0 0 0 1.961 2.215zM10.516 14.876a6.16 6.16 0 0 0-2.815.886 9.936 9.936 0 0 0 2.815 1.2 7.683 7.683 0 0 1 0-2.088zM14.281 5.543A7.839 7.839 0 0 0 11.592 4.4 8.361 8.361 0 0 0 11.4 7a8.875 8.875 0 0 1 2.47 1.264 10.292 10.292 0 0 1 .411-2.721ZM24.025 3.234a20.488 20.488 0 0 1 .917 4.112 6.823 6.823 0 0 0-3.068 1.519 7.443 7.443 0 0 1 1.55 1.044 1.351 1.351 0 0 0 1.645.316 36.938 36.938 0 0 0 2.721-2.72 1.273 1.273 0 0 0-.159-1.835 20.521 20.521 0 0 0-3.606-2.436ZM4.379 12.06a8.67 8.67 0 0 1 2.847-1.26 7.763 7.763 0 0 1-.759-2.974 14.687 14.687 0 0 0-2.088 4.234ZM11.339 10.668a9.991 9.991 0 0 1-.949-2.784 7.928 7.928 0 0 0-2.911-.126 7.312 7.312 0 0 0 .791 2.879 9.664 9.664 0 0 1 3.069.031ZM6.119 15.73a8.894 8.894 0 0 1-2.025-2.373 14.208 14.208 0 0 0-.063 4.9 8.522 8.522 0 0 1 2.088-2.527Z"/><path fill="#43b02a" fill-rule="evenodd" stroke="#43b02a" stroke-width=".068" d="M22.538 3.487A7.581 7.581 0 0 0 20.323 5.1a11.789 11.789 0 0 1 .823 2.5 9.775 9.775 0 0 1 2.309-1.329 6.593 6.593 0 0 0-.917-2.784ZM19.374 6.3a8.608 8.608 0 0 0-.822 1.676 9.645 9.645 0 0 1 1.329.19 7.568 7.568 0 0 0-.507-1.866ZM19.659 3.9a9.577 9.577 0 0 1 2.056-1.487A15.38 15.38 0 0 0 18.046 2a9.709 9.709 0 0 1 1.613 1.9Z"/><path fill="#43b02a" d="M27.378 23.892c-1.993-1.9-2.4-3.132-4.081-1.835a7.837 7.837 0 0 1-12.591-4.144A10.179 10.179 0 0 1 6.878 16.3a9.427 9.427 0 0 0-2.562 3.321h-.032C7.163 30.5 21.178 33.035 27.663 26.233c1.076-1.139.095-1.933-.285-2.341ZM6.309 20.855a7.559 7.559 0 0 1 .917-2.025 6.872 6.872 0 0 0 2.151.538c1.013 2.689 4.556 6.264 8.922 6.264a9.632 9.632 0 0 0 6.3-2.309 12.841 12.841 0 0 1 1.772 1.771c.095.127.095.159.095.159-5.766 5.03-15.538 4.302-20.157-4.398Z"/><path fill="#43b02a" fill-rule="evenodd" stroke="#43b02a" stroke-width=".067" d="M10.67 4.11a19.934 19.934 0 0 0-.214 2.509 10.512 10.512 0 0 0-2.689-.093A18 18 0 0 1 10.67 4.11ZM12.26 3.274a9.107 9.107 0 0 1 2.445 1.053 14.083 14.083 0 0 1 1.253-2.137 12.106 12.106 0 0 0-3.698 1.084z"/></svg>
\ No newline at end of file
diff --git a/routers/api/packages/api.go b/routers/api/packages/api.go
index 78eb5e860b..7a07fea815 100644
--- a/routers/api/packages/api.go
+++ b/routers/api/packages/api.go
@@ -16,6 +16,7 @@ import (
 	"code.gitea.io/gitea/modules/web"
 	"code.gitea.io/gitea/routers/api/packages/composer"
 	"code.gitea.io/gitea/routers/api/packages/conan"
+	"code.gitea.io/gitea/routers/api/packages/conda"
 	"code.gitea.io/gitea/routers/api/packages/container"
 	"code.gitea.io/gitea/routers/api/packages/generic"
 	"code.gitea.io/gitea/routers/api/packages/helm"
@@ -167,6 +168,43 @@ func CommonRoutes(ctx gocontext.Context) *web.Route {
 				})
 			})
 		}, reqPackageAccess(perm.AccessModeRead))
+		r.Group("/conda", func() {
+			var (
+				downloadPattern = regexp.MustCompile(`\A(.+/)?(.+)/((?:[^/]+(?:\.tar\.bz2|\.conda))|(?:current_)?repodata\.json(?:\.bz2)?)\z`)
+				uploadPattern   = regexp.MustCompile(`\A(.+/)?([^/]+(?:\.tar\.bz2|\.conda))\z`)
+			)
+
+			r.Get("/*", func(ctx *context.Context) {
+				m := downloadPattern.FindStringSubmatch(ctx.Params("*"))
+				if len(m) == 0 {
+					ctx.Status(http.StatusNotFound)
+					return
+				}
+
+				ctx.SetParams("channel", strings.TrimSuffix(m[1], "/"))
+				ctx.SetParams("architecture", m[2])
+				ctx.SetParams("filename", m[3])
+
+				switch m[3] {
+				case "repodata.json", "repodata.json.bz2", "current_repodata.json", "current_repodata.json.bz2":
+					conda.EnumeratePackages(ctx)
+				default:
+					conda.DownloadPackageFile(ctx)
+				}
+			})
+			r.Put("/*", reqPackageAccess(perm.AccessModeWrite), func(ctx *context.Context) {
+				m := uploadPattern.FindStringSubmatch(ctx.Params("*"))
+				if len(m) == 0 {
+					ctx.Status(http.StatusNotFound)
+					return
+				}
+
+				ctx.SetParams("channel", strings.TrimSuffix(m[1], "/"))
+				ctx.SetParams("filename", m[2])
+
+				conda.UploadPackageFile(ctx)
+			})
+		}, reqPackageAccess(perm.AccessModeRead))
 		r.Group("/generic", func() {
 			r.Group("/{packagename}/{packageversion}", func() {
 				r.Delete("", reqPackageAccess(perm.AccessModeWrite), generic.DeletePackage)
diff --git a/routers/api/packages/conda/conda.go b/routers/api/packages/conda/conda.go
new file mode 100644
index 0000000000..2ff619fed4
--- /dev/null
+++ b/routers/api/packages/conda/conda.go
@@ -0,0 +1,306 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package conda
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+
+	packages_model "code.gitea.io/gitea/models/packages"
+	conda_model "code.gitea.io/gitea/models/packages/conda"
+	"code.gitea.io/gitea/modules/context"
+	"code.gitea.io/gitea/modules/json"
+	"code.gitea.io/gitea/modules/log"
+	packages_module "code.gitea.io/gitea/modules/packages"
+	conda_module "code.gitea.io/gitea/modules/packages/conda"
+	"code.gitea.io/gitea/modules/util"
+	"code.gitea.io/gitea/routers/api/packages/helper"
+	packages_service "code.gitea.io/gitea/services/packages"
+
+	"github.com/dsnet/compress/bzip2"
+)
+
+func apiError(ctx *context.Context, status int, obj interface{}) {
+	helper.LogAndProcessError(ctx, status, obj, func(message string) {
+		ctx.JSON(status, struct {
+			Reason  string `json:"reason"`
+			Message string `json:"message"`
+		}{
+			Reason:  http.StatusText(status),
+			Message: message,
+		})
+	})
+}
+
+func EnumeratePackages(ctx *context.Context) {
+	type Info struct {
+		Subdir string `json:"subdir"`
+	}
+
+	type PackageInfo struct {
+		Name          string   `json:"name"`
+		Version       string   `json:"version"`
+		NoArch        string   `json:"noarch"`
+		Subdir        string   `json:"subdir"`
+		Timestamp     int64    `json:"timestamp"`
+		Build         string   `json:"build"`
+		BuildNumber   int64    `json:"build_number"`
+		Dependencies  []string `json:"depends"`
+		License       string   `json:"license"`
+		LicenseFamily string   `json:"license_family"`
+		HashMD5       string   `json:"md5"`
+		HashSHA256    string   `json:"sha256"`
+		Size          int64    `json:"size"`
+	}
+
+	type RepoData struct {
+		Info          Info                    `json:"info"`
+		Packages      map[string]*PackageInfo `json:"packages"`
+		PackagesConda map[string]*PackageInfo `json:"packages.conda"`
+		Removed       map[string]*PackageInfo `json:"removed"`
+	}
+
+	repoData := &RepoData{
+		Info: Info{
+			Subdir: ctx.Params("architecture"),
+		},
+		Packages:      make(map[string]*PackageInfo),
+		PackagesConda: make(map[string]*PackageInfo),
+		Removed:       make(map[string]*PackageInfo),
+	}
+
+	pfs, err := conda_model.SearchFiles(ctx, &conda_model.FileSearchOptions{
+		OwnerID: ctx.Package.Owner.ID,
+		Channel: ctx.Params("channel"),
+		Subdir:  repoData.Info.Subdir,
+	})
+	if err != nil {
+		apiError(ctx, http.StatusInternalServerError, err)
+		return
+	}
+
+	if len(pfs) == 0 {
+		apiError(ctx, http.StatusNotFound, nil)
+		return
+	}
+
+	pds := make(map[int64]*packages_model.PackageDescriptor)
+
+	for _, pf := range pfs {
+		pd, exists := pds[pf.VersionID]
+		if !exists {
+			pv, err := packages_model.GetVersionByID(ctx, pf.VersionID)
+			if err != nil {
+				apiError(ctx, http.StatusInternalServerError, err)
+				return
+			}
+
+			pd, err = packages_model.GetPackageDescriptor(ctx, pv)
+			if err != nil {
+				apiError(ctx, http.StatusInternalServerError, err)
+				return
+			}
+
+			pds[pf.VersionID] = pd
+		}
+
+		var pfd *packages_model.PackageFileDescriptor
+		for _, d := range pd.Files {
+			if d.File.ID == pf.ID {
+				pfd = d
+				break
+			}
+		}
+
+		var fileMetadata *conda_module.FileMetadata
+		if err := json.Unmarshal([]byte(pfd.Properties.GetByName(conda_module.PropertyMetadata)), &fileMetadata); err != nil {
+			apiError(ctx, http.StatusInternalServerError, err)
+			return
+		}
+
+		versionMetadata := pd.Metadata.(*conda_module.VersionMetadata)
+
+		pi := &PackageInfo{
+			Name:          pd.PackageProperties.GetByName(conda_module.PropertyName),
+			Version:       pd.Version.Version,
+			NoArch:        fileMetadata.NoArch,
+			Subdir:        repoData.Info.Subdir,
+			Timestamp:     fileMetadata.Timestamp,
+			Build:         fileMetadata.Build,
+			BuildNumber:   fileMetadata.BuildNumber,
+			Dependencies:  fileMetadata.Dependencies,
+			License:       versionMetadata.License,
+			LicenseFamily: versionMetadata.LicenseFamily,
+			HashMD5:       pfd.Blob.HashMD5,
+			HashSHA256:    pfd.Blob.HashSHA256,
+			Size:          pfd.Blob.Size,
+		}
+
+		if fileMetadata.IsCondaPackage {
+			repoData.PackagesConda[pfd.File.Name] = pi
+		} else {
+			repoData.Packages[pfd.File.Name] = pi
+		}
+	}
+
+	resp := ctx.Resp
+
+	var w io.Writer = resp
+
+	if strings.HasSuffix(ctx.Params("filename"), ".json") {
+		resp.Header().Set("Content-Type", "application/json")
+	} else {
+		resp.Header().Set("Content-Type", "application/x-bzip2")
+
+		zw, err := bzip2.NewWriter(w, nil)
+		if err != nil {
+			apiError(ctx, http.StatusInternalServerError, err)
+			return
+		}
+		defer zw.Close()
+
+		w = zw
+	}
+
+	resp.WriteHeader(http.StatusOK)
+
+	if err := json.NewEncoder(w).Encode(repoData); err != nil {
+		log.Error("JSON encode: %v", err)
+	}
+}
+
+func UploadPackageFile(ctx *context.Context) {
+	upload, close, err := ctx.UploadStream()
+	if err != nil {
+		apiError(ctx, http.StatusInternalServerError, err)
+		return
+	}
+	if close {
+		defer upload.Close()
+	}
+
+	buf, err := packages_module.CreateHashedBufferFromReader(upload, 32*1024*1024)
+	if err != nil {
+		apiError(ctx, http.StatusInternalServerError, err)
+		return
+	}
+	defer buf.Close()
+
+	var pck *conda_module.Package
+	if strings.HasSuffix(strings.ToLower(ctx.Params("filename")), ".tar.bz2") {
+		pck, err = conda_module.ParsePackageBZ2(buf)
+	} else {
+		pck, err = conda_module.ParsePackageConda(buf, buf.Size())
+	}
+	if err != nil {
+		if errors.Is(err, util.ErrInvalidArgument) {
+			apiError(ctx, http.StatusBadRequest, err)
+		} else {
+			apiError(ctx, http.StatusInternalServerError, err)
+		}
+		return
+	}
+
+	if _, err := buf.Seek(0, io.SeekStart); err != nil {
+		apiError(ctx, http.StatusInternalServerError, err)
+		return
+	}
+
+	fullName := pck.Name
+
+	channel := ctx.Params("channel")
+	if channel != "" {
+		fullName = channel + "/" + pck.Name
+	}
+
+	extension := ".tar.bz2"
+	if pck.FileMetadata.IsCondaPackage {
+		extension = ".conda"
+	}
+
+	fileMetadataRaw, err := json.Marshal(pck.FileMetadata)
+	if err != nil {
+		apiError(ctx, http.StatusInternalServerError, err)
+		return
+	}
+
+	_, _, err = packages_service.CreatePackageOrAddFileToExisting(
+		&packages_service.PackageCreationInfo{
+			PackageInfo: packages_service.PackageInfo{
+				Owner:       ctx.Package.Owner,
+				PackageType: packages_model.TypeConda,
+				Name:        fullName,
+				Version:     pck.Version,
+			},
+			SemverCompatible: false,
+			Creator:          ctx.Doer,
+			Metadata:         pck.VersionMetadata,
+			PackageProperties: map[string]string{
+				conda_module.PropertyName:    pck.Name,
+				conda_module.PropertyChannel: channel,
+			},
+		},
+		&packages_service.PackageFileCreationInfo{
+			PackageFileInfo: packages_service.PackageFileInfo{
+				Filename:     fmt.Sprintf("%s-%s-%s%s", pck.Name, pck.Version, pck.FileMetadata.Build, extension),
+				CompositeKey: pck.Subdir,
+			},
+			Creator: ctx.Doer,
+			Data:    buf,
+			IsLead:  true,
+			Properties: map[string]string{
+				conda_module.PropertySubdir:   pck.Subdir,
+				conda_module.PropertyMetadata: string(fileMetadataRaw),
+			},
+		},
+	)
+	if err != nil {
+		switch err {
+		case packages_model.ErrDuplicatePackageFile:
+			apiError(ctx, http.StatusConflict, err)
+		case packages_service.ErrQuotaTotalCount, packages_service.ErrQuotaTypeSize, packages_service.ErrQuotaTotalSize:
+			apiError(ctx, http.StatusForbidden, err)
+		default:
+			apiError(ctx, http.StatusInternalServerError, err)
+		}
+		return
+	}
+
+	ctx.Status(http.StatusCreated)
+}
+
+func DownloadPackageFile(ctx *context.Context) {
+	pfs, err := conda_model.SearchFiles(ctx, &conda_model.FileSearchOptions{
+		OwnerID:  ctx.Package.Owner.ID,
+		Channel:  ctx.Params("channel"),
+		Subdir:   ctx.Params("architecture"),
+		Filename: ctx.Params("filename"),
+	})
+	if err != nil {
+		apiError(ctx, http.StatusInternalServerError, err)
+		return
+	}
+
+	if len(pfs) != 1 {
+		apiError(ctx, http.StatusNotFound, nil)
+		return
+	}
+
+	pf := pfs[0]
+
+	s, _, err := packages_service.GetPackageFileStream(ctx, pf)
+	if err != nil {
+		apiError(ctx, http.StatusInternalServerError, err)
+		return
+	}
+	defer s.Close()
+
+	ctx.ServeContent(s, &context.ServeHeaderOptions{
+		Filename:     pf.Name,
+		LastModified: pf.CreatedUnix.AsLocalTime(),
+	})
+}
diff --git a/routers/api/v1/packages/package.go b/routers/api/v1/packages/package.go
index 6f9083ba32..5ffefc4862 100644
--- a/routers/api/v1/packages/package.go
+++ b/routers/api/v1/packages/package.go
@@ -40,7 +40,7 @@ func ListPackages(ctx *context.APIContext) {
 	//   in: query
 	//   description: package type filter
 	//   type: string
-	//   enum: [composer, conan, container, generic, helm, maven, npm, nuget, pub, pypi, rubygems, vagrant]
+	//   enum: [composer, conan, conda, container, generic, helm, maven, npm, nuget, pub, pypi, rubygems, vagrant]
 	// - name: q
 	//   in: query
 	//   description: name filter
diff --git a/services/forms/package_form.go b/services/forms/package_form.go
index 734bb05dc6..e78e64ef7e 100644
--- a/services/forms/package_form.go
+++ b/services/forms/package_form.go
@@ -15,7 +15,7 @@ import (
 type PackageCleanupRuleForm struct {
 	ID            int64
 	Enabled       bool
-	Type          string `binding:"Required;In(composer,conan,container,generic,helm,maven,npm,nuget,pub,pypi,rubygems,vagrant)"`
+	Type          string `binding:"Required;In(composer,conan,conda,container,generic,helm,maven,npm,nuget,pub,pypi,rubygems,vagrant)"`
 	KeepCount     int    `binding:"In(0,1,5,10,25,50,100)"`
 	KeepPattern   string `binding:"RegexPattern"`
 	RemoveDays    int    `binding:"In(0,7,14,30,60,90,180)"`
diff --git a/services/packages/packages.go b/services/packages/packages.go
index 754dfa7110..9e52cb1450 100644
--- a/services/packages/packages.go
+++ b/services/packages/packages.go
@@ -339,6 +339,8 @@ func CheckSizeQuotaExceeded(ctx context.Context, doer, owner *user_model.User, p
 		typeSpecificSize = setting.Packages.LimitSizeComposer
 	case packages_model.TypeConan:
 		typeSpecificSize = setting.Packages.LimitSizeConan
+	case packages_model.TypeConda:
+		typeSpecificSize = setting.Packages.LimitSizeConda
 	case packages_model.TypeContainer:
 		typeSpecificSize = setting.Packages.LimitSizeContainer
 	case packages_model.TypeGeneric:
diff --git a/templates/package/content/conda.tmpl b/templates/package/content/conda.tmpl
new file mode 100644
index 0000000000..ecc26bce98
--- /dev/null
+++ b/templates/package/content/conda.tmpl
@@ -0,0 +1,30 @@
+{{if eq .PackageDescriptor.Package.Type "conda"}}
+	<h4 class="ui top attached header">{{.locale.Tr "packages.installation"}}</h4>
+	<div class="ui attached segment">
+		<div class="ui form">
+			<div class="field">
+				<label>{{svg "octicon-code"}} {{.locale.Tr "packages.conda.registry" | Safe}}</label>
+				<div class="markup"><pre class="code-block"><code>channel_alias: {{AppUrl}}api/packages/{{.PackageDescriptor.Owner.Name}}/conda
+channels:
+&#32;&#32;- {{AppUrl}}api/packages/{{.PackageDescriptor.Owner.Name}}/conda
+default_channels:
+&#32;&#32;- {{AppUrl}}api/packages/{{.PackageDescriptor.Owner.Name}}/conda</code></pre></div>
+			</div>
+			<div class="field">
+				<label>{{svg "octicon-terminal"}} {{.locale.Tr "packages.conda.install"}}</label>
+				{{$channel := .PackageDescriptor.PackageProperties.GetByName "conda.channel"}}
+				<div class="markup"><pre class="code-block"><code>conda install{{if $channel}} -c {{$channel}}{{end}} {{.PackageDescriptor.PackageProperties.GetByName "conda.name"}}={{.PackageDescriptor.Version.Version}}</code></pre></div>
+			</div>
+			<div class="field">
+				<label>{{.locale.Tr "packages.conda.documentation" | Safe}}</label>
+			</div>
+		</div>
+	</div>
+
+	{{if or .PackageDescriptor.Metadata.Description .PackageDescriptor.Metadata.Summary}}
+		<h4 class="ui top attached header">{{.locale.Tr "packages.about"}}</h4>
+		<div class="ui attached segment">
+			{{if .PackageDescriptor.Metadata.Description}}{{.PackageDescriptor.Metadata.Description}}{{else}}{{.PackageDescriptor.Metadata.Summary}}{{end}}
+		</div>
+	{{end}}
+{{end}}
diff --git a/templates/package/metadata/conda.tmpl b/templates/package/metadata/conda.tmpl
new file mode 100644
index 0000000000..2201c80356
--- /dev/null
+++ b/templates/package/metadata/conda.tmpl
@@ -0,0 +1,6 @@
+{{if eq .PackageDescriptor.Package.Type "conda"}}
+	{{if .PackageDescriptor.Metadata.License}}<div class="item">{{svg "octicon-law" 16 "mr-3"}} {{.PackageDescriptor.Metadata.License}}</div>{{end}}
+	{{if .PackageDescriptor.Metadata.ProjectURL}}<div class="item">{{svg "octicon-link-external" 16 "mr-3"}} <a href="{{.PackageDescriptor.Metadata.ProjectURL}}" target="_blank" rel="noopener noreferrer me">{{.locale.Tr "packages.details.project_site"}}</a></div>{{end}}
+	{{if .PackageDescriptor.Metadata.RepositoryURL}}<div class="item">{{svg "octicon-link-external" 16 "mr-3"}} <a href="{{.PackageDescriptor.Metadata.RepositoryURL}}" target="_blank" rel="noopener noreferrer me">{{.locale.Tr "packages.conda.details.repository_site"}}</a></div>{{end}}
+	{{if .PackageDescriptor.Metadata.DocumentationURL}}<div class="item">{{svg "octicon-link-external" 16 "mr-3"}} <a href="{{.PackageDescriptor.Metadata.DocumentationURL}}" target="_blank" rel="noopener noreferrer me">{{.locale.Tr "packages.conda.details.documentation_site"}}</a></div>{{end}}
+{{end}}
diff --git a/templates/package/view.tmpl b/templates/package/view.tmpl
index a5b2a2ef68..2222480e7c 100644
--- a/templates/package/view.tmpl
+++ b/templates/package/view.tmpl
@@ -21,6 +21,7 @@
 				<div class="twelve wide column">
 					{{template "package/content/composer" .}}
 					{{template "package/content/conan" .}}
+					{{template "package/content/conda" .}}
 					{{template "package/content/container" .}}
 					{{template "package/content/generic" .}}
 					{{template "package/content/helm" .}}
@@ -44,6 +45,7 @@
 							<div class="item">{{svg "octicon-download" 16 "mr-3"}} {{.PackageDescriptor.Version.DownloadCount}}</div>
 							{{template "package/metadata/composer" .}}
 							{{template "package/metadata/conan" .}}
+							{{template "package/metadata/conda" .}}
 							{{template "package/metadata/container" .}}
 							{{template "package/metadata/generic" .}}
 							{{template "package/metadata/helm" .}}
diff --git a/templates/swagger/v1_json.tmpl b/templates/swagger/v1_json.tmpl
index 726b771cfc..5a3f2c2bb9 100644
--- a/templates/swagger/v1_json.tmpl
+++ b/templates/swagger/v1_json.tmpl
@@ -2102,6 +2102,7 @@
             "enum": [
               "composer",
               "conan",
+              "conda",
               "container",
               "generic",
               "helm",
diff --git a/tests/integration/api_packages_conda_test.go b/tests/integration/api_packages_conda_test.go
new file mode 100644
index 0000000000..daa7dca55f
--- /dev/null
+++ b/tests/integration/api_packages_conda_test.go
@@ -0,0 +1,274 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package integration
+
+import (
+	"archive/tar"
+	"archive/zip"
+	"bytes"
+	"fmt"
+	"io"
+	"net/http"
+	"testing"
+
+	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/packages"
+	"code.gitea.io/gitea/models/unittest"
+	user_model "code.gitea.io/gitea/models/user"
+	conda_module "code.gitea.io/gitea/modules/packages/conda"
+	"code.gitea.io/gitea/tests"
+
+	"github.com/dsnet/compress/bzip2"
+	"github.com/klauspost/compress/zstd"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPackageConda(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+
+	packageName := "test_package"
+	packageVersion := "1.0.1"
+
+	channel := "test-channel"
+	root := fmt.Sprintf("/api/packages/%s/conda", user.Name)
+
+	t.Run("Upload", func(t *testing.T) {
+		tarContent := func() []byte {
+			var buf bytes.Buffer
+			tw := tar.NewWriter(&buf)
+
+			content := []byte(`{"name":"` + packageName + `","version":"` + packageVersion + `","subdir":"noarch","build":"xxx"}`)
+
+			hdr := &tar.Header{
+				Name: "info/index.json",
+				Mode: 0o600,
+				Size: int64(len(content)),
+			}
+			tw.WriteHeader(hdr)
+			tw.Write(content)
+			tw.Close()
+			return buf.Bytes()
+		}()
+
+		t.Run(".tar.bz2", func(t *testing.T) {
+			defer tests.PrintCurrentTest(t)()
+
+			var buf bytes.Buffer
+			bw, _ := bzip2.NewWriter(&buf, nil)
+			io.Copy(bw, bytes.NewReader(tarContent))
+			bw.Close()
+
+			filename := fmt.Sprintf("%s-%s.tar.bz2", packageName, packageVersion)
+
+			req := NewRequestWithBody(t, "PUT", root+"/"+filename, bytes.NewReader(buf.Bytes()))
+			MakeRequest(t, req, http.StatusUnauthorized)
+
+			req = NewRequestWithBody(t, "PUT", root+"/"+filename, bytes.NewReader(buf.Bytes()))
+			AddBasicAuthHeader(req, user.Name)
+			MakeRequest(t, req, http.StatusCreated)
+
+			req = NewRequestWithBody(t, "PUT", root+"/"+filename, bytes.NewReader(buf.Bytes()))
+			AddBasicAuthHeader(req, user.Name)
+			MakeRequest(t, req, http.StatusConflict)
+
+			pvs, err := packages.GetVersionsByPackageType(db.DefaultContext, user.ID, packages.TypeConda)
+			assert.NoError(t, err)
+			assert.Len(t, pvs, 1)
+
+			pd, err := packages.GetPackageDescriptor(db.DefaultContext, pvs[0])
+			assert.NoError(t, err)
+			assert.Nil(t, pd.SemVer)
+			assert.IsType(t, &conda_module.VersionMetadata{}, pd.Metadata)
+			assert.Equal(t, packageName, pd.Package.Name)
+			assert.Equal(t, packageVersion, pd.Version.Version)
+			assert.Empty(t, pd.PackageProperties.GetByName(conda_module.PropertyChannel))
+		})
+
+		t.Run(".conda", func(t *testing.T) {
+			defer tests.PrintCurrentTest(t)()
+
+			var infoBuf bytes.Buffer
+			zsw, _ := zstd.NewWriter(&infoBuf)
+			io.Copy(zsw, bytes.NewReader(tarContent))
+			zsw.Close()
+
+			var buf bytes.Buffer
+			zpw := zip.NewWriter(&buf)
+			w, _ := zpw.Create("info-x.tar.zst")
+			w.Write(infoBuf.Bytes())
+			zpw.Close()
+
+			fullName := channel + "/" + packageName
+			filename := fmt.Sprintf("%s-%s.conda", packageName, packageVersion)
+
+			req := NewRequestWithBody(t, "PUT", root+"/"+channel+"/"+filename, bytes.NewReader(buf.Bytes()))
+			MakeRequest(t, req, http.StatusUnauthorized)
+
+			req = NewRequestWithBody(t, "PUT", root+"/"+channel+"/"+filename, bytes.NewReader(buf.Bytes()))
+			AddBasicAuthHeader(req, user.Name)
+			MakeRequest(t, req, http.StatusCreated)
+
+			req = NewRequestWithBody(t, "PUT", root+"/"+channel+"/"+filename, bytes.NewReader(buf.Bytes()))
+			AddBasicAuthHeader(req, user.Name)
+			MakeRequest(t, req, http.StatusConflict)
+
+			pvs, err := packages.GetVersionsByPackageType(db.DefaultContext, user.ID, packages.TypeConda)
+			assert.NoError(t, err)
+			assert.Len(t, pvs, 2)
+
+			pds, err := packages.GetPackageDescriptors(db.DefaultContext, pvs)
+			assert.NoError(t, err)
+
+			assert.Condition(t, func() bool {
+				for _, pd := range pds {
+					if pd.Package.Name == fullName {
+						return true
+					}
+				}
+				return false
+			})
+
+			for _, pd := range pds {
+				if pd.Package.Name == fullName {
+					assert.Nil(t, pd.SemVer)
+					assert.IsType(t, &conda_module.VersionMetadata{}, pd.Metadata)
+					assert.Equal(t, fullName, pd.Package.Name)
+					assert.Equal(t, packageVersion, pd.Version.Version)
+					assert.Equal(t, channel, pd.PackageProperties.GetByName(conda_module.PropertyChannel))
+				}
+			}
+		})
+	})
+
+	t.Run("Download", func(t *testing.T) {
+		t.Run(".tar.bz2", func(t *testing.T) {
+			defer tests.PrintCurrentTest(t)()
+
+			req := NewRequest(t, "GET", fmt.Sprintf("%s/noarch/%s-%s-xxx.tar.bz2", root, packageName, packageVersion))
+			MakeRequest(t, req, http.StatusOK)
+
+			req = NewRequest(t, "GET", fmt.Sprintf("%s/%s/noarch/%s-%s-xxx.tar.bz2", root, channel, packageName, packageVersion))
+			MakeRequest(t, req, http.StatusNotFound)
+		})
+
+		t.Run(".conda", func(t *testing.T) {
+			defer tests.PrintCurrentTest(t)()
+
+			req := NewRequest(t, "GET", fmt.Sprintf("%s/noarch/%s-%s-xxx.conda", root, packageName, packageVersion))
+			MakeRequest(t, req, http.StatusNotFound)
+
+			req = NewRequest(t, "GET", fmt.Sprintf("%s/%s/noarch/%s-%s-xxx.conda", root, channel, packageName, packageVersion))
+			MakeRequest(t, req, http.StatusOK)
+		})
+	})
+
+	t.Run("EnumeratePackages", func(t *testing.T) {
+		type Info struct {
+			Subdir string `json:"subdir"`
+		}
+
+		type PackageInfo struct {
+			Name          string   `json:"name"`
+			Version       string   `json:"version"`
+			NoArch        string   `json:"noarch"`
+			Subdir        string   `json:"subdir"`
+			Timestamp     int64    `json:"timestamp"`
+			Build         string   `json:"build"`
+			BuildNumber   int64    `json:"build_number"`
+			Dependencies  []string `json:"depends"`
+			License       string   `json:"license"`
+			LicenseFamily string   `json:"license_family"`
+			HashMD5       string   `json:"md5"`
+			HashSHA256    string   `json:"sha256"`
+			Size          int64    `json:"size"`
+		}
+
+		type RepoData struct {
+			Info          Info                    `json:"info"`
+			Packages      map[string]*PackageInfo `json:"packages"`
+			PackagesConda map[string]*PackageInfo `json:"packages.conda"`
+			Removed       map[string]*PackageInfo `json:"removed"`
+		}
+
+		req := NewRequest(t, "GET", fmt.Sprintf("%s/noarch/repodata.json", root))
+		resp := MakeRequest(t, req, http.StatusOK)
+		assert.Equal(t, "application/json", resp.Header().Get("Content-Type"))
+
+		req = NewRequest(t, "GET", fmt.Sprintf("%s/noarch/repodata.json.bz2", root))
+		resp = MakeRequest(t, req, http.StatusOK)
+		assert.Equal(t, "application/x-bzip2", resp.Header().Get("Content-Type"))
+
+		req = NewRequest(t, "GET", fmt.Sprintf("%s/noarch/current_repodata.json", root))
+		resp = MakeRequest(t, req, http.StatusOK)
+		assert.Equal(t, "application/json", resp.Header().Get("Content-Type"))
+
+		req = NewRequest(t, "GET", fmt.Sprintf("%s/noarch/current_repodata.json.bz2", root))
+		resp = MakeRequest(t, req, http.StatusOK)
+		assert.Equal(t, "application/x-bzip2", resp.Header().Get("Content-Type"))
+
+		t.Run(".tar.bz2", func(t *testing.T) {
+			defer tests.PrintCurrentTest(t)()
+
+			pv, err := packages.GetVersionByNameAndVersion(db.DefaultContext, user.ID, packages.TypeConda, packageName, packageVersion)
+			assert.NoError(t, err)
+
+			pd, err := packages.GetPackageDescriptor(db.DefaultContext, pv)
+			assert.NoError(t, err)
+
+			req := NewRequest(t, "GET", fmt.Sprintf("%s/noarch/repodata.json", root))
+			resp := MakeRequest(t, req, http.StatusOK)
+
+			var result RepoData
+			DecodeJSON(t, resp, &result)
+
+			assert.Equal(t, "noarch", result.Info.Subdir)
+			assert.Empty(t, result.PackagesConda)
+			assert.Empty(t, result.Removed)
+
+			filename := fmt.Sprintf("%s-%s-xxx.tar.bz2", packageName, packageVersion)
+			assert.Contains(t, result.Packages, filename)
+			packageInfo := result.Packages[filename]
+			assert.Equal(t, packageName, packageInfo.Name)
+			assert.Equal(t, packageVersion, packageInfo.Version)
+			assert.Equal(t, "noarch", packageInfo.Subdir)
+			assert.Equal(t, "xxx", packageInfo.Build)
+			assert.Equal(t, pd.Files[0].Blob.HashMD5, packageInfo.HashMD5)
+			assert.Equal(t, pd.Files[0].Blob.HashSHA256, packageInfo.HashSHA256)
+			assert.Equal(t, pd.Files[0].Blob.Size, packageInfo.Size)
+		})
+
+		t.Run(".conda", func(t *testing.T) {
+			defer tests.PrintCurrentTest(t)()
+
+			pv, err := packages.GetVersionByNameAndVersion(db.DefaultContext, user.ID, packages.TypeConda, channel+"/"+packageName, packageVersion)
+			assert.NoError(t, err)
+
+			pd, err := packages.GetPackageDescriptor(db.DefaultContext, pv)
+			assert.NoError(t, err)
+
+			req := NewRequest(t, "GET", fmt.Sprintf("%s/%s/noarch/repodata.json", root, channel))
+			resp := MakeRequest(t, req, http.StatusOK)
+
+			var result RepoData
+			DecodeJSON(t, resp, &result)
+
+			assert.Equal(t, "noarch", result.Info.Subdir)
+			assert.Empty(t, result.Packages)
+			assert.Empty(t, result.Removed)
+
+			filename := fmt.Sprintf("%s-%s-xxx.conda", packageName, packageVersion)
+			assert.Contains(t, result.PackagesConda, filename)
+			packageInfo := result.PackagesConda[filename]
+			assert.Equal(t, packageName, packageInfo.Name)
+			assert.Equal(t, packageVersion, packageInfo.Version)
+			assert.Equal(t, "noarch", packageInfo.Subdir)
+			assert.Equal(t, "xxx", packageInfo.Build)
+			assert.Equal(t, pd.Files[0].Blob.HashMD5, packageInfo.HashMD5)
+			assert.Equal(t, pd.Files[0].Blob.HashSHA256, packageInfo.HashSHA256)
+			assert.Equal(t, pd.Files[0].Blob.Size, packageInfo.Size)
+		})
+	})
+}
diff --git a/web_src/svg/gitea-conda.svg b/web_src/svg/gitea-conda.svg
new file mode 100644
index 0000000000..c5797c8c10
--- /dev/null
+++ b/web_src/svg/gitea-conda.svg
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg">
+<path d="M16.559,8.137a7.2,7.2,0,0,0-1.234-1.708,7.586,7.586,0,0,0-.19,2.183,5.161,5.161,0,0,1,1.424-.475Z" fill="#43b02a" fill-rule="evenodd" stroke="#43b02a" stroke-width=".068489px"/>
+<path d="M13.617,9.466a7.992,7.992,0,0,0-1.993-1.2,8.123,8.123,0,0,0,.885,2.183c0,.063.443-.475,1.108-.981Z" fill="#43b02a" fill-rule="evenodd" stroke="#43b02a" stroke-width=".068489px"/>
+<path d="M17.445,7.188a9.143,9.143,0,0,1,1.3-2.246A7.585,7.585,0,0,0,17,2.854a8.35,8.35,0,0,0-1.3,2.278,8.451,8.451,0,0,1,1.74,2.056Z" fill="#43b02a" fill-rule="evenodd" stroke="#43b02a" stroke-width=".068489px"/>
+<path d="m11.592 11.744a10.276 10.276 0 0 0-2.692-0.158 7.478 7.478 0 0 0 1.93 1.9 6.858 6.858 0 0 1 0.759-1.74z" fill="#43b02a" fill-rule="evenodd" stroke="#43b02a" stroke-width=".068489px"/>
+<path d="m6.878 15.161a7.44 7.44 0 0 1 2.942-1.139 10.019 10.019 0 0 1-2.056-2.278 7.639 7.639 0 0 0-2.847 1.2 7.11 7.11 0 0 0 1.961 2.215z" fill="#43b02a" fill-rule="evenodd" stroke="#43b02a" stroke-width=".068489px"/>
+<path d="m10.516 14.876a6.16 6.16 0 0 0-2.815 0.886 9.936 9.936 0 0 0 2.815 1.2 7.683 7.683 0 0 1 0-2.088z" fill="#43b02a" fill-rule="evenodd" stroke="#43b02a" stroke-width=".068489px"/>
+<path d="M14.281,5.543A7.839,7.839,0,0,0,11.592,4.4,8.361,8.361,0,0,0,11.4,7,8.875,8.875,0,0,1,13.87,8.264a10.292,10.292,0,0,1,.411-2.721Z" fill="#43b02a" fill-rule="evenodd" stroke="#43b02a" stroke-width=".068489px"/>
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