refactoring: now detecting file type using filename from form data. Also, only one accepted content type

.gitignore

@@ -1,2 +1,3 @@
 .DS_Store
 .ci/coverage.txt
+.vscode

app/context/context.go

@@ -7,46 +7,15 @@ import (
 	"net/http"
 
 	"github.com/thecodingmachine/gotenberg/app/converter"
-	ghttp "github.com/thecodingmachine/gotenberg/app/http"
 )
 
 type key uint32
 
 const (
-	contentTypeKey key = iota
-	converterKey
+	converterKey key = iota
 	resultFilePathKey
 )
 
-// WithContentType populates a request's context with the given content type
-// and returns the updated request.
-func WithContentType(r *http.Request, contentType ghttp.ContentType) *http.Request {
-	ctx := r.Context()
-	ctx = context.WithValue(ctx, contentTypeKey, contentType)
-	r = r.WithContext(ctx)
-
-	return r
-}
-
-type contentTypeNotFoundError struct{}
-
-const contentTypeNotFoundErrorMessage = "The 'Content-Type' was not found in request context"
-
-func (e *contentTypeNotFoundError) Error() string {
-	return contentTypeNotFoundErrorMessage
-}
-
-// GetContentType returns the content type if found in
-// the request's context. Otherwise throws an error.
-func GetContentType(r *http.Request) (ghttp.ContentType, error) {
-	ct, ok := r.Context().Value(contentTypeKey).(ghttp.ContentType)
-	if !ok {
-		return "", &contentTypeNotFoundError{}
-	}
-
-	return ct, nil
-}
-
 // WithConverter populates a request's context with the given converter
 // and returns the updated request.
 func WithConverter(r *http.Request, converter *converter.Converter) *http.Request {

app/context/context_test.go

@@ -6,31 +6,8 @@ import (
 	"testing"
 
 	"github.com/thecodingmachine/gotenberg/app/converter"
-	ghttp "github.com/thecodingmachine/gotenberg/app/http"
 )
 
-func TestWithContentType(t *testing.T) {
-	req := WithContentType(httptest.NewRequest(http.MethodPost, "/", nil), ghttp.MultipartFormDataContentType)
-	if ct, _ := req.Context().Value(contentTypeKey).(ghttp.ContentType); ct != ghttp.MultipartFormDataContentType {
-		t.Errorf("Context returned a wrong content type: got %v want %v", ct, ghttp.MultipartFormDataContentType)
-	}
-}
-
-func TestGetContentType(t *testing.T) {
-	req := httptest.NewRequest(http.MethodPost, "/", nil)
-
-	// case 1: uses a request without a content type entry in its context.
-	if _, err := GetContentType(req); err == nil {
-		t.Error("Context should not have a content type entry!")
-	}
-
-	// case 2: uses a request with a content type entry in its context.
-	req = WithContentType(req, ghttp.MultipartFormDataContentType)
-	if _, err := GetContentType(req); err != nil {
-		t.Error("Context should have a content type entry!")
-	}
-}
-
 func TestWithConverter(t *testing.T) {
 	req := WithConverter(httptest.NewRequest(http.MethodPost, "/", nil), &converter.Converter{})
 	if c, _ := req.Context().Value(converterKey).(*converter.Converter); c == nil {
@@ -53,14 +30,6 @@ func TestGetConverter(t *testing.T) {
 	}
 }
 
-func TestWithResultFilePath(t *testing.T) {
-	filePath := "file.pdf"
-	req := WithResultFilePath(httptest.NewRequest(http.MethodPost, "/", nil), filePath)
-	if path, _ := req.Context().Value(resultFilePathKey).(string); path != filePath {
-		t.Errorf("Context returned a wrong converter: got %s want %s", path, filePath)
-	}
-}
-
 func TestGetResultFilePath(t *testing.T) {
 	req := httptest.NewRequest(http.MethodPost, "/", nil)
 
@@ -76,10 +45,11 @@ func TestGetResultFilePath(t *testing.T) {
 	}
 }
 
-func TestContentTypeNotFoundError(t *testing.T) {
-	err := &contentTypeNotFoundError{}
-	if err.Error() != contentTypeNotFoundErrorMessage {
-		t.Errorf("Error returned a wrong message: got %s want %s", err.Error(), contentTypeNotFoundErrorMessage)
+func TestWithResultFilePath(t *testing.T) {
+	filePath := "file.pdf"
+	req := WithResultFilePath(httptest.NewRequest(http.MethodPost, "/", nil), filePath)
+	if path, _ := req.Context().Value(resultFilePathKey).(string); path != filePath {
+		t.Errorf("Context returned a wrong converter: got %s want %s", path, filePath)
 	}
 }
 

app/converter/converter.go

@@ -9,7 +9,6 @@ import (
 
 	gfile "github.com/thecodingmachine/gotenberg/app/converter/file"
 	"github.com/thecodingmachine/gotenberg/app/converter/process"
-	ghttp "github.com/thecodingmachine/gotenberg/app/http"
 
 	"github.com/satori/go.uuid"
 )
@@ -21,7 +20,7 @@ type Converter struct {
 }
 
 // NewConverter instantiates a converter by parsing a request.
-func NewConverter(r *http.Request, contentType ghttp.ContentType) (*Converter, error) {
+func NewConverter(r *http.Request) (*Converter, error) {
 	c := &Converter{
 		workingDir: fmt.Sprintf("./%s/", uuid.NewV4().String()),
 	}
@@ -30,8 +29,6 @@ func NewConverter(r *http.Request, contentType ghttp.ContentType) (*Converter, e
 		return nil, err
 	}
 
-	switch contentType {
-	case ghttp.MultipartFormDataContentType:
 	reader, err := r.MultipartReader()
 	if err != nil {
 		return nil, err
@@ -43,20 +40,12 @@ func NewConverter(r *http.Request, contentType ghttp.ContentType) (*Converter, e
 			break
 		}
 
-			if part.FileName() == "" {
+		fileName := part.FileName()
+		if fileName == "" {
 			continue
 		}
 
-			f, err := gfile.NewFile(c.workingDir, part)
-			if err != nil {
-				return nil, err
-			}
-
-			c.files = append(c.files, f)
-		}
-		break
-	default:
-		f, err := gfile.NewFile(c.workingDir, r.Body)
+		f, err := gfile.NewFile(c.workingDir, part, fileName)
 		if err != nil {
 			return nil, err
 		}

app/converter/converter_test.go

@@ -1,7 +1,6 @@
 package converter
 
 import (
-	"bytes"
 	"io"
 	"mime/multipart"
 	"net/http"
@@ -12,23 +11,9 @@ import (
 
 	"github.com/thecodingmachine/gotenberg/app/config"
 	"github.com/thecodingmachine/gotenberg/app/converter/process"
-	ghttp "github.com/thecodingmachine/gotenberg/app/http"
 )
 
 func makeRequest(filesPaths ...string) *http.Request {
-	if len(filesPaths) == 0 {
-		req := httptest.NewRequest(http.MethodPost, "/", new(bytes.Buffer))
-		req.Header.Set("Content-Type", string(ghttp.OctetStreamContentType))
-		return req
-	}
-
-	if len(filesPaths) == 1 {
-		file, _ := os.Open(filesPaths[0])
-		req := httptest.NewRequest(http.MethodPost, "/", file)
-		req.Header.Set("Content-Type", string(ghttp.OctetStreamContentType))
-		return req
-	}
-
 	r, w := io.Pipe()
 	mpw := multipart.NewWriter(w)
 
@@ -56,27 +41,27 @@ func makeRequest(filesPaths ...string) *http.Request {
 func TestNewConverter(t *testing.T) {
 	// case 1: uses a request with a single file.
 	path, _ := filepath.Abs("../../_tests/file.docx")
-	if _, err := NewConverter(makeRequest(path), ghttp.OctetStreamContentType); err != nil {
+	if _, err := NewConverter(makeRequest(path)); err != nil {
 		t.Error("Converter should have been instantiated!")
 	}
 
 	// case 2: uses a request with wrong file type.
 	path, _ = filepath.Abs("../../_tests/configurations/gotenberg.yml")
-	if _, err := NewConverter(makeRequest(path), ghttp.OctetStreamContentType); err == nil {
+	if _, err := NewConverter(makeRequest(path)); err == nil {
 		t.Error("Converter should not have been instantiated!")
 	}
 
 	// case 3: uses a request with two files.
 	oPath, _ := filepath.Abs("../../_tests/file.docx")
 	path, _ = filepath.Abs("../../_tests/file.pdf")
-	if _, err := NewConverter(makeRequest(oPath, path), ghttp.MultipartFormDataContentType); err != nil {
+	if _, err := NewConverter(makeRequest(oPath, path)); err != nil {
 		t.Error("Converter should have been instantiated!")
 	}
 
 	// case 4: uses a request with one Office file and one wrong file type.
 	oPath, _ = filepath.Abs("../../_tests/file.docx")
 	path, _ = filepath.Abs("../../_tests/configurations/gotenberg.yml")
-	if _, err := NewConverter(makeRequest(oPath, path), ghttp.MultipartFormDataContentType); err == nil {
+	if _, err := NewConverter(makeRequest(oPath, path)); err == nil {
 		t.Error("Converter should not have been instantiated!")
 	}
 }
@@ -88,7 +73,7 @@ func TestConvert(t *testing.T) {
 
 	// case 1: uses a request with a single file.
 	path, _ = filepath.Abs("../../_tests/file.docx")
-	c, _ := NewConverter(makeRequest(path), ghttp.OctetStreamContentType)
+	c, _ := NewConverter(makeRequest(path))
 	if _, err := c.Convert(); err != nil {
 		t.Error("Converter should have been able to convert an Office document to PDF!")
 	}
@@ -96,7 +81,7 @@ func TestConvert(t *testing.T) {
 	// case 2: uses a request with two files.
 	oPath, _ := filepath.Abs("../../_tests/file.docx")
 	path, _ = filepath.Abs("../../_tests/file.pdf")
-	c, _ = NewConverter(makeRequest(oPath, path), ghttp.MultipartFormDataContentType)
+	c, _ = NewConverter(makeRequest(oPath, path))
 	if _, err := c.Convert(); err != nil {
 		t.Error("Converter should have been able to convert two files to PDF and merge them!")
 	}
@@ -106,7 +91,7 @@ func TestConvert(t *testing.T) {
 	appConfig, _ = config.NewAppConfig(path)
 	process.Load(appConfig.CommandsConfig)
 	path, _ = filepath.Abs("../../_tests/file.docx")
-	c, _ = NewConverter(makeRequest(path), ghttp.OctetStreamContentType)
+	c, _ = NewConverter(makeRequest(path))
 	if _, err := c.Convert(); err == nil {
 		t.Error("Converter should not have been able to convert an Office document to PDF!")
 	}
@@ -117,7 +102,7 @@ func TestConvert(t *testing.T) {
 	process.Load(appConfig.CommandsConfig)
 	oPath, _ = filepath.Abs("../../_tests/file.docx")
 	path, _ = filepath.Abs("../../_tests/file.pdf")
-	c, _ = NewConverter(makeRequest(oPath, path), ghttp.MultipartFormDataContentType)
+	c, _ = NewConverter(makeRequest(oPath, path))
 	if _, err := c.Convert(); err == nil {
 		t.Error("Converter should not have been able to merge PDF!")
 	}
@@ -125,7 +110,7 @@ func TestConvert(t *testing.T) {
 
 func TestClear(t *testing.T) {
 	path, _ := filepath.Abs("../../_tests/file.docx")
-	c, _ := NewConverter(makeRequest(path), ghttp.OctetStreamContentType)
+	c, _ := NewConverter(makeRequest(path))
 	if err := c.Clear(); err != nil {
 		t.Error("Converter should have been able to clear itself!")
 	}

app/converter/file/file.go

@@ -5,8 +5,7 @@ import (
 	"fmt"
 	"io"
 	"os"
-
-	ghttp "github.com/thecodingmachine/gotenberg/app/http"
+	"path/filepath"
 
 	"github.com/satori/go.uuid"
 )
@@ -32,11 +31,42 @@ const (
 	OfficeType
 )
 
+// filesTypes associates a file extension with its file kind counterpart.
+var filesTypes = map[string]Type{
+	".pdf":  PDFType,
+	".html": HTMLType,
+	".doc":  OfficeType,
+	".docx": OfficeType,
+	".odt":  OfficeType,
+	".xls":  OfficeType,
+	".xlsx": OfficeType,
+	".ods":  OfficeType,
+	".ppt":  OfficeType,
+	".pptx": OfficeType,
+	".odp":  OfficeType,
+}
+
+type fileTypeNotFoundError struct {
+	fileName string
+}
+
+func (e *fileTypeNotFoundError) Error() string {
+	return fmt.Sprintf("File type was not found for '%s'", e.fileName)
+}
+
 // NewFile creates a file in the considered directory.
 // Returns a *File instance or an error if something bad happened.
-func NewFile(workingDir string, r io.Reader) (*File, error) {
+func NewFile(workingDir string, r io.Reader, fileName string) (*File, error) {
+	ext := filepath.Ext(fileName)
+
+	t, ok := filesTypes[ext]
+	if !ok {
+		return nil, &fileTypeNotFoundError{fileName: fileName}
+	}
+
 	f := &File{
-		Path: MakeFilePath(workingDir),
+		Path: MakeFilePath(workingDir, ext),
+		Type: t,
 	}
 
 	file, err := os.Create(f.Path)
@@ -54,103 +84,11 @@ func NewFile(workingDir string, r io.Reader) (*File, error) {
 	// resets the read pointer.
 	file.Seek(0, 0)
 
-	t, err := findFileType(file)
-	if err != nil {
-		return nil, err
-	}
-
-	f.Type = t
-
-	f, err = reworkFilePath(workingDir, f)
-	if err != nil {
-		return nil, err
-	}
-
 	return f, nil
 }
 
 // MakeFilePath is a simple helper which generates a random file name
 // and associates it with the considered directory to make a path.
-func MakeFilePath(workingDir string) string {
-	return fmt.Sprintf("%s%s", workingDir, uuid.NewV4().String())
-}
-
-// filesTypes associates a content type with its file kind counterpart.
-var filesTypes = map[ghttp.ContentType]Type{
-	ghttp.PDFContentType:         PDFType,
-	ghttp.HTMLContentType:        HTMLType,
-	ghttp.OctetStreamContentType: OfficeType,
-	ghttp.ZipContentType:         OfficeType,
-}
-
-type fileTypeNotFoundError struct{}
-
-const fileTypeNotFoundErrorMessage = "The file type was not found for the given 'Content-Type'"
-
-func (e *fileTypeNotFoundError) Error() string {
-	return fileTypeNotFoundErrorMessage
-}
-
-// findFileType tries to detect what kind of file is the given file.
-func findFileType(f *os.File) (Type, error) {
-	ct, err := ghttp.SniffContentType(f)
-	if err != nil {
-		return 999, err
-	}
-
-	t, ok := filesTypes[ct]
-	if !ok {
-		return 999, &fileTypeNotFoundError{}
-	}
-
-	return t, nil
-}
-
-// Ext represents a file extension.
-type Ext string
-
-const (
-	// PDFExt represents a... PDF extension.
-	PDFExt Ext = ".pdf"
-	// HTMLExt represents an... HTML extension.
-	HTMLExt Ext = ".html"
-	// OfficeExt is a empty string, as Office documents
-	// have a lot of different extensions (.docx, .doc and so on).
-	OfficeExt Ext = ""
-)
-
-// filesExtensions associates a kind of file with its extension.
-var filesExtensions = map[Type]Ext{
-	PDFType:    PDFExt,
-	HTMLType:   HTMLExt,
-	OfficeType: OfficeExt,
-}
-
-type fileExtNotFoundError struct{}
-
-const fileExtNotFoundErrorMessage = "The file extension was not found for the given file type"
-
-func (e *fileExtNotFoundError) Error() string {
-	return fileExtNotFoundErrorMessage
-}
-
-// reworkFilePath renames a file in the considered directory and adds its extension.
-func reworkFilePath(workingDir string, f *File) (*File, error) {
-	ext, ok := filesExtensions[f.Type]
-	if !ok {
-		return nil, &fileExtNotFoundError{}
-	}
-
-	if ext != OfficeExt {
-		newPath := fmt.Sprintf("%s%s", MakeFilePath(workingDir), ext)
-
-		err := os.Rename(f.Path, newPath)
-		if err != nil {
-			return nil, err
-		}
-
-		f.Path = newPath
-	}
-
-	return f, nil
+func MakeFilePath(workingDir string, ext string) string {
+	return fmt.Sprintf("%s%s%s", workingDir, uuid.NewV4().String(), ext)
 }

app/converter/file/file_test.go

@@ -2,6 +2,7 @@ package file
 
 import (
 	"bytes"
+	"fmt"
 	"os"
 	"path/filepath"
 	"testing"
@@ -11,56 +12,27 @@ func TestNewFile(t *testing.T) {
 	workingDir := "test"
 	os.Mkdir(workingDir, 0666)
 
-	// case 1: uses an empty reader.
-	if _, err := NewFile(workingDir, new(bytes.Buffer)); err == nil {
-		t.Error("File should not have been instantiated!")
-	}
-
-	// case 2: uses a reader from a wrong file type.
-	path, _ := filepath.Abs("../../../_tests/configurations/gotenberg.yml")
-	r, _ := os.Open(path)
-	defer r.Close()
-	if _, err := NewFile(workingDir, r); err == nil {
+	// case 2: uses a wrong file name.
+	if _, err := NewFile(workingDir, new(bytes.Buffer), "file.yml"); err == nil {
 		t.Error("File should not have been instantiated!")
 	}
 
 	// case 3: uses a reader from a correct file type.
-	path, _ = filepath.Abs("../../../_tests/file.pdf")
-	r, _ = os.Open(path)
+	filePath, _ := filepath.Abs("../../../_tests/file.pdf")
+	r, _ := os.Open(filePath)
 	defer r.Close()
-	if _, err := NewFile(workingDir, r); err != nil {
+	if _, err := NewFile(workingDir, r, "file.pdf"); err != nil {
 		t.Error("File should have been instantiated!")
 	}
 
 	os.RemoveAll(workingDir)
 }
-
-func TestReworkFilePath(t *testing.T) {
-	workingDir := "test"
-	os.Mkdir(workingDir, 0666)
-
-	f := &File{
-		Path: MakeFilePath(workingDir),
-		Type: 999,
-	}
-
-	if _, err := reworkFilePath(workingDir, f); err == nil {
-		t.Error("It should not have been able to found the file extension!")
-	}
-
-	os.RemoveAll(workingDir)
-}
-
 func TestFileTypeNotFoundError(t *testing.T) {
-	err := &fileTypeNotFoundError{}
-	if err.Error() != fileTypeNotFoundErrorMessage {
-		t.Errorf("Error returned a wrong message: got %s want %s", err.Error(), fileTypeNotFoundErrorMessage)
-	}
-}
+	fileName := "file.wp"
+	err := &fileTypeNotFoundError{fileName: fileName}
+	expected := fmt.Sprintf("File type was not found for '%s'", fileName)
 
-func TestFileExtNotFoundError(t *testing.T) {
-	err := &fileExtNotFoundError{}
-	if err.Error() != fileExtNotFoundErrorMessage {
-		t.Errorf("Error returned a wrong message: got %s want %s", err.Error(), fileExtNotFoundErrorMessage)
+	if err.Error() != expected {
+		t.Errorf("Error returned a wrong message: got %s want %s", err.Error(), expected)
 	}
 }

app/converter/process/process.go

@@ -3,7 +3,6 @@ package process
 
 import (
 	"bytes"
-	"fmt"
 	"os/exec"
 	"text/template"
 	"time"
@@ -37,7 +36,7 @@ func (e *impossibleConversionError) Error() string {
 func Unconv(workingDir string, file *gfile.File) (string, error) {
 	cmdData := &conversionData{
 		FilePath:       file.Path,
-		ResultFilePath: fmt.Sprintf("%s%s", gfile.MakeFilePath(workingDir), gfile.PDFExt),
+		ResultFilePath: gfile.MakeFilePath(workingDir, ".pdf"),
 	}
 
 	var (
@@ -81,7 +80,7 @@ type mergeData struct {
 func Merge(workingDir string, filesPaths []string) (string, error) {
 	cmdData := &mergeData{
 		FilesPaths:     filesPaths,
-		ResultFilePath: fmt.Sprintf("%s%s", gfile.MakeFilePath(workingDir), gfile.PDFExt),
+		ResultFilePath: gfile.MakeFilePath(workingDir, ".pdf"),
 	}
 
 	cmdTemplate := commandsConfig.Merge.Template
@@ -127,7 +126,6 @@ func run(command string, timeout int) error {
 		if err := cmd.Process.Kill(); err != nil {
 			return err
 		}
-
 		return &commandTimeoutError{}
 	case err := <-done:
 		if err != nil {

app/converter/process/process_test.go

@@ -1,6 +1,7 @@
 package process
 
 import (
+	"fmt"
 	"os"
 	"path/filepath"
 	"testing"
@@ -9,6 +10,18 @@ import (
 	gfile "github.com/thecodingmachine/gotenberg/app/converter/file"
 )
 
+func makeFile(workingDir string, fileName string) *gfile.File {
+	filePath := fmt.Sprintf("%s%s", "../../../_tests/", fileName)
+	absPath, _ := filepath.Abs(filePath)
+
+	r, _ := os.Open(absPath)
+	defer r.Close()
+
+	f, _ := gfile.NewFile(workingDir, r, fileName)
+
+	return f
+}
+
 func TestLoad(t *testing.T) {
 	path, _ := filepath.Abs("../../../_tests/configurations/gotenberg.yml")
 	c, _ := config.NewAppConfig(path)
@@ -28,29 +41,17 @@ func TestUnconv(t *testing.T) {
 	os.Mkdir(workingDir, 0666)
 
 	// case 1: uses an HTML file type.
-	path, _ = filepath.Abs("../../../_tests/file.html")
-	r, _ := os.Open(path)
-	defer r.Close()
-	f, _ := gfile.NewFile(workingDir, r)
-	if _, err := Unconv(workingDir, f); err != nil {
+	if _, err := Unconv(workingDir, makeFile(workingDir, "file.html")); err != nil {
 		t.Error("HTML conversion to PDF should have worked!")
 	}
 
 	// case 2: uses an Office file type.
-	path, _ = filepath.Abs("../../../_tests/file.docx")
-	r, _ = os.Open(path)
-	defer r.Close()
-	f, _ = gfile.NewFile(workingDir, r)
-	if _, err := Unconv(workingDir, f); err != nil {
+	if _, err := Unconv(workingDir, makeFile(workingDir, "file.docx")); err != nil {
 		t.Error("Office conversion to PDF should have worked!")
 	}
 
 	// case 3: uses a PDF file type.
-	path, _ = filepath.Abs("../../../_tests/file.pdf")
-	r, _ = os.Open(path)
-	defer r.Close()
-	f, _ = gfile.NewFile(workingDir, r)
-	if _, err := Unconv(workingDir, f); err == nil {
+	if _, err := Unconv(workingDir, makeFile(workingDir, "file.pdf")); err == nil {
 		t.Error("PDF conversion to PDF should not have worked!")
 	}
 
@@ -58,11 +59,7 @@ func TestUnconv(t *testing.T) {
 	path, _ = filepath.Abs("../../../_tests/configurations/timeout-gotenberg.yml")
 	c, _ = config.NewAppConfig(path)
 	Load(c.CommandsConfig)
-	path, _ = filepath.Abs("../../../_tests/file.docx")
-	r, _ = os.Open(path)
-	defer r.Close()
-	f, _ = gfile.NewFile(workingDir, r)
-	if _, err := Unconv(workingDir, f); err == nil {
+	if _, err := Unconv(workingDir, makeFile(workingDir, "file.docx")); err == nil {
 		t.Error("Office conversion to PDF should have reached timeout!")
 	}
 

app/handlers.go

@@ -42,18 +42,15 @@ func enforceContentLengthHandler(next http.Handler) http.Handler {
 }
 
 // enforceContentTypeHandler checks if the "Content-Type" entry
-// from the request's header matches one of the allowed content types.
+// from the request's header matches the allowed content type.
 func enforceContentTypeHandler(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		ct, err := ghttp.FindAuthorizedContentType(r.Header)
-		if err != nil {
+		if err := ghttp.CheckAuthorizedContentType(r.Header); err != nil {
 			http.Error(w, err.Error(), http.StatusUnsupportedMediaType)
 			logger.Error(err)
 			return
 		}
 
-		r = context.WithContentType(r, ct)
-
 		next.ServeHTTP(w, r)
 	})
 }
@@ -61,14 +58,7 @@ func enforceContentTypeHandler(next http.Handler) http.Handler {
 // convertHandler is in charge of converting the file(s) from the request to PDF.
 func convertHandler(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		ct, err := context.GetContentType(r)
-		if err != nil {
-			http.Error(w, err.Error(), http.StatusInternalServerError)
-			logger.Error(err)
-			return
-		}
-
-		c, err := converter.NewConverter(r, ct)
+		c, err := converter.NewConverter(r)
 		if err != nil {
 			http.Error(w, err.Error(), http.StatusInternalServerError)
 			logger.Error(err)

app/handlers_test.go

@@ -1,7 +1,6 @@
 package app
 
 import (
-	"bytes"
 	"io"
 	"mime/multipart"
 	"net/http"
@@ -24,19 +23,6 @@ func fakeSuccessHandler(w http.ResponseWriter, r *http.Request) {
 }
 
 func makeRequest(filesPaths ...string) *http.Request {
-	if len(filesPaths) == 0 {
-		req := httptest.NewRequest(http.MethodPost, "/", new(bytes.Buffer))
-		req.Header.Set("Content-Type", string(ghttp.OctetStreamContentType))
-		return req
-	}
-
-	if len(filesPaths) == 1 {
-		file, _ := os.Open(filesPaths[0])
-		req := httptest.NewRequest(http.MethodPost, "/", file)
-		req.Header.Set("Content-Type", string(ghttp.OctetStreamContentType))
-		return req
-	}
-
 	r, w := io.Pipe()
 	mpw := multipart.NewWriter(w)
 
@@ -86,7 +72,7 @@ func TestEnforceContentTypeHandler(t *testing.T) {
 
 	// case 1: sends a wrong content type.
 	req := httptest.NewRequest(http.MethodPost, "/", nil)
-	req.Header.Set("Content-Type", string(ghttp.PDFContentType))
+	req.Header.Set("Content-Type", "application/pdf")
 	rr := httptest.NewRecorder()
 	h.ServeHTTP(rr, req)
 	if status := rr.Code; status != http.StatusUnsupportedMediaType {
@@ -95,7 +81,7 @@ func TestEnforceContentTypeHandler(t *testing.T) {
 
 	// case 2: sends a good content type.
 	req = httptest.NewRequest(http.MethodPost, "/", nil)
-	req.Header.Set("Content-Type", string(ghttp.OctetStreamContentType))
+	req.Header.Set("Content-Type", string(ghttp.MultipartFormDataContentType))
 	rr = httptest.NewRecorder()
 	h.ServeHTTP(rr, req)
 	if status := rr.Code; status != http.StatusOK {
@@ -106,7 +92,7 @@ func TestEnforceContentTypeHandler(t *testing.T) {
 func TestConvertHandler(t *testing.T) {
 	h := alice.New(convertHandler).ThenFunc(fakeSuccessHandler)
 
-	// case 1: sends a request without a content type entry in its context.
+	// case 1: sends a request without body.
 	req := httptest.NewRequest(http.MethodPost, "/", nil)
 	rr := httptest.NewRecorder()
 	h.ServeHTTP(rr, req)
@@ -114,22 +100,14 @@ func TestConvertHandler(t *testing.T) {
 		t.Errorf("Handler returned a wrong status code: got %v want %v", status, http.StatusInternalServerError)
 	}
 
-	// case 2: sends a request without body.
-	req = context.WithContentType(httptest.NewRequest(http.MethodPost, "/", nil), ghttp.OctetStreamContentType)
-	rr = httptest.NewRecorder()
-	h.ServeHTTP(rr, req)
-	if status := rr.Code; status != http.StatusInternalServerError {
-		t.Errorf("Handler returned a wrong status code: got %v want %v", status, http.StatusInternalServerError)
-	}
-
-	// case 3: sends a request with two files and using an unsuitable timeout for merge commande.
+	// case 2: sends a request with two files and using an unsuitable timeout for merge commande.
 	path, _ := filepath.Abs("../_tests/configurations/merge-timeout-gotenberg.yml")
 	appConfig, _ := config.NewAppConfig(path)
 	process.Load(appConfig.CommandsConfig)
 
 	oPath, _ := filepath.Abs("../_tests/file.docx")
 	path, _ = filepath.Abs("../_tests/configurations/gotenberg.yml")
-	req = context.WithContentType(makeRequest(oPath, path), ghttp.MultipartFormDataContentType)
+	req = makeRequest(oPath, path)
 	rr = httptest.NewRecorder()
 	h.ServeHTTP(rr, req)
 	if status := rr.Code; status != http.StatusInternalServerError {
@@ -143,7 +121,7 @@ func TestConvertHandler(t *testing.T) {
 
 	oPath, _ = filepath.Abs("../_tests/file.docx")
 	path, _ = filepath.Abs("../_tests/file.pdf")
-	req = context.WithContentType(makeRequest(oPath, path), ghttp.MultipartFormDataContentType)
+	req = makeRequest(oPath, path)
 	rr = httptest.NewRecorder()
 	h.ServeHTTP(rr, req)
 	if status := rr.Code; status != http.StatusOK {

app/http/http.go

@@ -4,71 +4,30 @@ package http
 import (
 	"fmt"
 	"net/http"
-	"os"
 	"strings"
 )
 
 // ContentType is a string which represents a content type.
 type ContentType string
 
-const (
-	// PDFContentType represents... the PDF content type.
-	PDFContentType ContentType = "application/pdf"
-	// HTMLContentType represents... the HTML content type.
-	HTMLContentType ContentType = "text/html"
-	// OctetStreamContentType represents... the octet stream content type.
-	OctetStreamContentType ContentType = "application/octet-stream"
-	// ZipContentType represents... the zip content type.
-	ZipContentType ContentType = "application/zip"
-	// MultipartFormDataContentType represents... the multipart form data content type.
-	MultipartFormDataContentType ContentType = "multipart/form-data"
-)
+// MultipartFormDataContentType represents... the multipart form data content type.
+const MultipartFormDataContentType ContentType = "multipart/form-data"
 
 type notAuthorizedContentTypeError struct{}
 
 func (e *notAuthorizedContentTypeError) Error() string {
-	return fmt.Sprintf("Accepted values for 'Content-Type': %s, %s", OctetStreamContentType, MultipartFormDataContentType)
+	return fmt.Sprintf("Accepted value for 'Content-Type': %s", MultipartFormDataContentType)
 }
 
-// FindAuthorizedContentType tries to return a content type according to a request header.
+// CheckAuthorizedContentType check if the request header header has an authorized content type.
 // If no authorized content type found, throws an error.
-func FindAuthorizedContentType(h http.Header) (ContentType, error) {
-	ct := findContentType(h.Get("Content-Type"), OctetStreamContentType, MultipartFormDataContentType)
+func CheckAuthorizedContentType(h http.Header) error {
+	ct := findContentType(h.Get("Content-Type"), MultipartFormDataContentType)
 	if ct == "" {
-		return "", &notAuthorizedContentTypeError{}
+		return &notAuthorizedContentTypeError{}
 	}
 
-	return ct, nil
-}
-
-type notAuthorizedFileContentTypeError struct{}
-
-const notAuthorizedFileContentTypeErrorMessage = "Unable to detect an authorized file content type"
-
-func (e *notAuthorizedFileContentTypeError) Error() string {
-	return notAuthorizedFileContentTypeErrorMessage
-}
-
-// SniffContentType tries to detect the content type of a file.
-// If no authorized content type found, throws an error.
-func SniffContentType(f *os.File) (ContentType, error) {
-	// only the first 512 bytes are used to sniff the content type.
-	buffer := make([]byte, 512)
-	n, err := f.Read(buffer)
-	if err != nil {
-		return "", err
-	}
-
-	// resets the read pointer.
-	f.Seek(0, 0)
-
-	// using n if size of buffer < 512 bytes.
-	ct := findContentType(http.DetectContentType(buffer[:n]), PDFContentType, HTMLContentType, OctetStreamContentType, ZipContentType)
-	if ct == "" {
-		return "", &notAuthorizedFileContentTypeError{}
-	}
-
-	return ct, nil
+	return nil
 }
 
 // findContentType parses a string representing a content type and tries to find

app/http/http_test.go

@@ -4,55 +4,28 @@ import (
 	"fmt"
 	"net/http"
 	"net/http/httptest"
-	"os"
-	"path/filepath"
 	"testing"
 )
 
-func TestFindAuthorizedContentType(t *testing.T) {
+func TestCheckAuthorizedContentType(t *testing.T) {
 	req := httptest.NewRequest(http.MethodPost, "/", nil)
 
 	// case 1: uses a request without a content type entry in its header.
-	if _, err := FindAuthorizedContentType(req.Header); err == nil {
+	if err := CheckAuthorizedContentType(req.Header); err == nil {
 		t.Error("It should not have been able to retrieve an authorized content type from header!")
 	}
 
 	// case 2: uses a request with a content type entry in its header.
 	req.Header.Set("Content-Type", string(MultipartFormDataContentType))
-	if _, err := FindAuthorizedContentType(req.Header); err != nil {
+	if err := CheckAuthorizedContentType(req.Header); err != nil {
 		t.Error("It should have been able to retrieve an authorized content type from header!")
 	}
 }
 
-func TestSniffContentType(t *testing.T) {
-	// case 1: uses a file with a wrong content type.
-	path, _ := filepath.Abs("../../_tests/configurations/gotenberg.yml")
-	f, _ := os.Open(path)
-	defer f.Close()
-	if _, err := SniffContentType(f); err == nil {
-		t.Error("It should not have been able to retrieve an authorized content type from an YAML file!")
-	}
-
-	// case 2: uses a file with a correct content type.
-	path, _ = filepath.Abs("../../_tests/file.pdf")
-	f, _ = os.Open(path)
-	defer f.Close()
-	if _, err := SniffContentType(f); err != nil {
-		t.Error("It should have been able to retrieve an authorized content type from a PDF file!")
-	}
-}
-
 func TestNotAuthorizedContentTypeError(t *testing.T) {
 	err := &notAuthorizedContentTypeError{}
-	message := fmt.Sprintf("Accepted values for 'Content-Type': %s, %s", OctetStreamContentType, MultipartFormDataContentType)
+	message := fmt.Sprintf("Accepted value for 'Content-Type': %s", MultipartFormDataContentType)
 	if err.Error() != message {
 		t.Errorf("Error returned a wrong message: got %s want %s", err.Error(), message)
 	}
 }
-
-func TestNotAuthorizedFileContentTypeError(t *testing.T) {
-	err := &notAuthorizedFileContentTypeError{}
-	if err.Error() != notAuthorizedFileContentTypeErrorMessage {
-		t.Errorf("Error returned a wrong message: got %s want %s", err.Error(), notAuthorizedFileContentTypeErrorMessage)
-	}
-}