Paperclip/pkg/internal/server/api/attachments_api.go

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package api
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import (
"fmt"
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"git.solsynth.dev/hydrogen/paperclip/pkg/internal/database"
"git.solsynth.dev/hydrogen/paperclip/pkg/internal/gap"
"git.solsynth.dev/hydrogen/paperclip/pkg/internal/server/exts"
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"net/url"
"path/filepath"
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"git.solsynth.dev/hydrogen/paperclip/pkg/internal/models"
"git.solsynth.dev/hydrogen/paperclip/pkg/internal/services"
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"github.com/gofiber/fiber/v2"
jsoniter "github.com/json-iterator/go"
"github.com/samber/lo"
"github.com/spf13/viper"
)
func openAttachment(c *fiber.Ctx) error {
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id, _ := c.ParamsInt("id", 0)
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metadata, err := services.GetAttachmentByID(uint(id))
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if err != nil {
return fiber.NewError(fiber.StatusNotFound)
}
destMap := viper.GetStringMap("destinations")
dest, destOk := destMap[metadata.Destination]
if !destOk {
return fiber.NewError(fiber.StatusInternalServerError, "invalid destination: destination configuration was not found")
}
var destParsed models.BaseDestination
rawDest, _ := jsoniter.Marshal(dest)
_ = jsoniter.Unmarshal(rawDest, &destParsed)
switch destParsed.Type {
case models.DestinationTypeLocal:
var destConfigured models.LocalDestination
_ = jsoniter.Unmarshal(rawDest, &destConfigured)
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if len(metadata.MimeType) > 0 {
c.Set(fiber.HeaderContentType, metadata.MimeType)
}
return c.SendFile(filepath.Join(destConfigured.Path, metadata.Uuid), false)
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case models.DestinationTypeS3:
var destConfigured models.S3Destination
_ = jsoniter.Unmarshal(rawDest, &destConfigured)
protocol := lo.Ternary(destConfigured.EnableSSL, "https", "http")
return c.Redirect(fmt.Sprintf(
"%s://%s.%s/%s",
protocol,
destConfigured.Bucket,
destConfigured.Endpoint,
url.QueryEscape(filepath.Join(destConfigured.Path, metadata.Uuid)),
))
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default:
return fmt.Errorf("invalid destination: unsupported protocol %s", destParsed.Type)
}
}
func getAttachmentMeta(c *fiber.Ctx) error {
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id, _ := c.ParamsInt("id")
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metadata, err := services.GetAttachmentByID(uint(id))
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if err != nil {
return fiber.NewError(fiber.StatusNotFound)
}
return c.JSON(metadata)
}
func createAttachment(c *fiber.Ctx) error {
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if err := gap.H.EnsureAuthenticated(c); err != nil {
return err
}
user := c.Locals("user").(models.Account)
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destName := c.Query("destination", viper.GetString("preferred_destination"))
hash := c.FormValue("hash")
if len(hash) != 64 {
return fiber.NewError(fiber.StatusBadRequest, "please provide a sha-256 hash code, length should be 64 characters")
}
usage := c.FormValue("usage")
if !lo.Contains(viper.GetStringSlice("accepts_usage"), usage) {
return fiber.NewError(fiber.StatusBadRequest, fmt.Sprintf("disallowed usage: %s", usage))
}
file, err := c.FormFile("file")
if err != nil {
return err
}
if err := gap.H.EnsureGrantedPerm(c, "CreatePaperclipAttachments", file.Size); err != nil {
return err
}
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usermeta := make(map[string]any)
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_ = jsoniter.UnmarshalFromString(c.FormValue("metadata"), &usermeta)
tx := database.C.Begin()
metadata, linked, err := services.NewAttachmentMetadata(tx, user, file, models.Attachment{
Usage: usage,
HashCode: hash,
Alternative: c.FormValue("alt"),
MimeType: c.FormValue("mimetype"),
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Metadata: usermeta,
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IsMature: len(c.FormValue("mature")) > 0,
Destination: destName,
})
if err != nil {
tx.Rollback()
return fiber.NewError(fiber.StatusBadRequest, err.Error())
}
if !linked {
if err := services.UploadFile(destName, c, file, metadata); err != nil {
tx.Rollback()
return fiber.NewError(fiber.StatusBadRequest, err.Error())
}
}
tx.Commit()
return c.JSON(metadata)
}
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func updateAttachmentMeta(c *fiber.Ctx) error {
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id, _ := c.ParamsInt("id", 0)
if err := gap.H.EnsureAuthenticated(c); err != nil {
return err
}
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user := c.Locals("user").(models.Account)
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var data struct {
Alternative string `json:"alt"`
Usage string `json:"usage"`
Metadata map[string]any `json:"metadata"`
IsMature bool `json:"is_mature"`
}
if err := exts.BindAndValidate(c, &data); err != nil {
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return err
}
var attachment models.Attachment
if err := database.C.Where(models.Attachment{
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BaseModel: models.BaseModel{ID: uint(id)},
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AccountID: user.ID,
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}).First(&attachment).Error; err != nil {
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return fiber.NewError(fiber.StatusBadRequest, err.Error())
}
attachment.Alternative = data.Alternative
attachment.Usage = data.Usage
attachment.Metadata = data.Metadata
attachment.IsMature = data.IsMature
if err := database.C.Save(&attachment).Error; err != nil {
return fiber.NewError(fiber.StatusBadRequest, err.Error())
}
return c.JSON(attachment)
}
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func deleteAttachment(c *fiber.Ctx) error {
id, _ := c.ParamsInt("id", 0)
if err := gap.H.EnsureAuthenticated(c); err != nil {
return err
}
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user := c.Locals("user").(models.Account)
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attachment, err := services.GetAttachmentByID(uint(id))
if err != nil {
return fiber.NewError(fiber.StatusNotFound, err.Error())
} else if attachment.AccountID != user.ID {
return fiber.NewError(fiber.StatusNotFound, "record not created by you")
}
if err := services.DeleteAttachment(attachment); err != nil {
return fiber.NewError(fiber.StatusInternalServerError, err.Error())
} else {
return c.SendStatus(fiber.StatusOK)
}
}