diff --git a/repochecker/file-inspector/files.go b/repochecker/file-inspector/files.go
index e1f7dbf0..67f4389a 100644
--- a/repochecker/file-inspector/files.go
+++ b/repochecker/file-inspector/files.go
@@ -1,7 +1,6 @@
 package main
 
 import (
-	"log"
 	"path/filepath"
 	"strings"
 
@@ -10,20 +9,12 @@ import (
 )
 
 func InspectFile(file *fic.EFile, exceptions *sync.CheckExceptions) (errs []error) {
-	i, ok := sync.GlobalImporter.(sync.LocalImporter)
-	if !ok {
-		log.Printf("Unable to load `file-inspector.so` as the current Importer is not a LocalImporter (%T).", sync.GlobalImporter)
-		return
-	}
-
-	path := i.GetLocalPath(file.GetOrigin())
-
 	if filepath.Ext(file.Name) == ".tar" || strings.HasSuffix(file.Name, ".tar.gz") || strings.HasSuffix(file.Name, ".tar.bz2") {
 		// Check there is more than 1 file in tarball
-		errs = append(errs, checkTarball(path, file, exceptions)...)
+		errs = append(errs, checkTarball(file, exceptions)...)
 	} else if filepath.Ext(file.Name) == ".zip" {
 		// Check there is more than 1 file in zip
-		errs = append(errs, checkZip(path, file, exceptions)...)
+		errs = append(errs, checkZip(file, exceptions)...)
 	}
 
 	return
diff --git a/repochecker/file-inspector/tarball.go b/repochecker/file-inspector/tarball.go
index 20fa7561..dc518a91 100644
--- a/repochecker/file-inspector/tarball.go
+++ b/repochecker/file-inspector/tarball.go
@@ -7,20 +7,19 @@ import (
 	"fmt"
 	"io"
 	"log"
-	"os"
 	"strings"
 
 	"srs.epita.fr/fic-server/admin/sync"
 	"srs.epita.fr/fic-server/libfic"
 )
 
-func checkTarball(path string, file *fic.EFile, exceptions *sync.CheckExceptions) (errs []error) {
-	fd, err := os.Open(path)
+func checkTarball(file *fic.EFile, exceptions *sync.CheckExceptions) (errs []error) {
+	fd, closer, err := sync.GetFile(sync.GlobalImporter, file.GetOrigin())
 	if err != nil {
-		log.Printf("Unable to open %q: %s", path, err.Error())
+		log.Printf("Unable to open %q: %s", file.GetOrigin(), err.Error())
 		return
 	}
-	defer fd.Close()
+	defer closer()
 
 	var rd io.Reader
 	if strings.HasSuffix(file.Name, ".tar.gz") {
diff --git a/repochecker/file-inspector/zip.go b/repochecker/file-inspector/zip.go
index d84ac95c..40fa7447 100644
--- a/repochecker/file-inspector/zip.go
+++ b/repochecker/file-inspector/zip.go
@@ -3,19 +3,37 @@ package main
 import (
 	"archive/zip"
 	"fmt"
+	"io"
 	"log"
 
 	"srs.epita.fr/fic-server/admin/sync"
 	"srs.epita.fr/fic-server/libfic"
 )
 
-func checkZip(path string, file *fic.EFile, exceptions *sync.CheckExceptions) (errs []error) {
-	r, err := zip.OpenReader(path)
+func checkZip(file *fic.EFile, exceptions *sync.CheckExceptions) (errs []error) {
+	fd, closer, err := sync.GetFile(sync.GlobalImporter, file.GetOrigin())
 	if err != nil {
-		log.Printf("Unable to open %q: %s", path, err.Error())
+		log.Printf("Unable to open %q: %s", file.GetOrigin(), err.Error())
+		return
+	}
+	defer closer()
+
+	fdat, ok := fd.(io.ReaderAt)
+	if !ok {
+		log.Println("The current reader doesn't allow me to check this archive")
+	}
+
+	size, err := sync.GetFileSize(sync.GlobalImporter, file.GetOrigin())
+	if err != nil {
+		log.Printf("Unable to calculate size of %q: %s", file.GetOrigin(), err.Error())
+		return
+	}
+
+	r, err := zip.NewReader(fdat, size)
+	if err != nil {
+		log.Printf("Unable to open %q: %s", file.GetOrigin(), err.Error())
 		return
 	}
-	defer r.Close()
 
 	if len(r.File) < 2 {
 		if !exceptions.HasException(":one-file-tarball") {
diff --git a/repochecker/pcap-inspector/files.go b/repochecker/pcap-inspector/files.go
index 954de31b..f2239006 100644
--- a/repochecker/pcap-inspector/files.go
+++ b/repochecker/pcap-inspector/files.go
@@ -110,20 +110,12 @@ func CheckTextFile(fd *os.File) (errs []error) {
 }
 
 func InspectFileForIPAddr(file *fic.EFile, exceptions *sync.CheckExceptions) (errs []error) {
-	i, ok := sync.GlobalImporter.(sync.LocalImporter)
-	if !ok {
-		log.Printf("Unable to load `pcap-inspector.so` as the current Importer is not a LocalImporter (%T).", sync.GlobalImporter)
-		return
-	}
-
-	path := i.GetLocalPath(file.GetOrigin())
-
-	fd, err := os.Open(path)
+	fd, closer, err := sync.GetFile(sync.GlobalImporter, file.GetOrigin())
 	if err != nil {
-		log.Printf("Unable to open %q: %s", path, err.Error())
+		log.Printf("Unable to open %q: %s", file.GetOrigin(), err.Error())
 		return
 	}
-	defer fd.Close()
+	defer closer()
 
 	switch filepath.Ext(file.Name) {
 	case ".pcap":