implement RFE 3545, 'Support to view encrypted (password protected) PDF'

[claws.git] / src / plugins / pdf_viewer / poppler_viewer.c

diff --git a/src/plugins/pdf_viewer/poppler_viewer.c b/src/plugins/pdf_viewer/poppler_viewer.c
index df66fa5d508a29a1297e59072beac09ca96686e9..eee0cb69c1c4f27e19a9519321bbe9df543b173e 100644 (file)
--- a/src/plugins/pdf_viewer/poppler_viewer.c
+++ b/src/plugins/pdf_viewer/poppler_viewer.c
@@ -31,6 +31,7 @@
 #include "printing.h"
 #include "prefs_common.h"
 #include "gtk/gtkutils.h"
+#include "gtk/inputdialog.h"
 #include "mimeview.h"
 #ifndef POPPLER_WITH_GDK
 #include "stdbool.h"
@@ -556,7 +557,7 @@ static void pdf_viewer_get_document_index(PdfViewer *viewer, PopplerIndexIter *i
                        PopplerDest *dest = poppler_document_find_dest(
                                        viewer->pdf_doc, action->goto_dest.dest->named_dest);
                        if (dest->type != POPPLER_DEST_XYZ) {
-                               g_warning("couldn't figure out link\n");
+                               g_warning("couldn't figure out link");
                                poppler_dest_free(dest);
                                continue;
                        }
@@ -566,9 +567,9 @@ static void pdf_viewer_get_document_index(PdfViewer *viewer, PopplerIndexIter *i
 #endif
                else {
 #ifdef HAVE_POPPLER_DEST_NAMED
-                       g_warning("unhandled link type %d\nplease contact developers\n", action->goto_dest.dest->type);
+                       g_warning("unhandled link type %d. please contact developers", action->goto_dest.dest->type);
 #else
-                       g_warning("unhandled link type %d\nplease upgrade libpoppler-glib to 0.5.4\n", action->goto_dest.dest->type);
+                       g_warning("unhandled link type %d. please upgrade libpoppler-glib to 0.5.4", action->goto_dest.dest->type);
 #endif
                        continue;
                }
@@ -837,7 +838,7 @@ static void pdf_viewer_button_press_events_cb(GtkWidget *widget, GdkEventButton
                                dest = poppler_document_find_dest(
                                        viewer->pdf_doc, viewer->link_action->goto_dest.dest->named_dest);
                        if (dest->type != POPPLER_DEST_XYZ) {
-                               g_warning("couldn't figure out link\n");
+                               g_warning("couldn't figure out link");
                                poppler_dest_free(dest);
                                break;
                        }
@@ -852,7 +853,7 @@ static void pdf_viewer_button_press_events_cb(GtkWidget *widget, GdkEventButton
                        dest = poppler_document_find_dest(
                                        viewer->pdf_doc, viewer->link_action->goto_remote.dest->named_dest);
                        if (dest->type != POPPLER_DEST_XYZ) {
-                               g_warning ("couldn't figure out link\n");
+                               g_warning ("couldn't figure out link");
                                poppler_dest_free(dest);
                                break;
                        }
@@ -1239,13 +1240,13 @@ static void pdf_viewer_update(MimeViewer *_viewer, gboolean reload_file, int pag
 {
 
        PdfViewer *viewer = (PdfViewer *) _viewer;
-       GError *error;
+       GError *error = NULL;
        gchar *tmpfile = NULL;
        gchar *tmp;
+       gchar *password = NULL;
 
        debug_print("pdf_viewer_update\n");
 
-       error = NULL;
        if (reload_file) {
                if (viewer->pdf_doc) {
                        g_object_unref(G_OBJECT(viewer->pdf_doc));
@@ -1299,7 +1300,7 @@ static void pdf_viewer_update(MimeViewer *_viewer, gboolean reload_file, int pag
                                        g_free(tmp);
                                } 
                                else {
-                                       g_warning("gs conversion failed: %s returned %d\n", cmdline, result);
+                                       g_warning("gs conversion failed: %s returned %d", cmdline, result);
                                        tmp = g_strdup_printf("gs: err %d", result);
                                        alertpanel_warning("%s", tmp);
                                        g_free(tmp);
@@ -1310,7 +1311,7 @@ static void pdf_viewer_update(MimeViewer *_viewer, gboolean reload_file, int pag
                                g_free(tmpfile);
                        }
                        else {
-                               g_warning("gs conversion disabled: gs binary was not found\n");
+                               g_warning("gs conversion disabled: gs binary was not found");
                                alertpanel_warning("PostScript view disabled: required gs program not found");
                                result = 1;
 
@@ -1323,6 +1324,14 @@ static void pdf_viewer_update(MimeViewer *_viewer, gboolean reload_file, int pag
                else {
                        viewer->pdf_doc = poppler_document_new_from_file( viewer->fsname, NULL, &error);
                }
+               if (error && g_error_matches(error, POPPLER_ERROR, POPPLER_ERROR_ENCRYPTED)) {
+                       g_clear_error(&error);
+                       password = input_dialog_with_invisible(_("Enter password"),
+                                       _("This document is locked and requires a password before it can be opened."),
+                                       "");
+                       viewer->pdf_doc = poppler_document_new_from_file(viewer->fsname, password, &error);
+                       g_free(password);
+               }
 
                viewer->num_pages = poppler_document_get_n_pages(viewer->pdf_doc);
 
@@ -1395,7 +1404,7 @@ static void pdf_viewer_update(MimeViewer *_viewer, gboolean reload_file, int pag
                viewer->pdf_page = poppler_document_get_page(viewer->pdf_doc, page_num - 1);
 
                if (viewer->pdf_page == NULL) {
-                       g_warning("Page not found\n");
+                       g_warning("Page not found");
                        return;
                }