Hi,
I attached a patch for getting the pdf ID.
If anybody have any queries I put the same thing in
[email protected]. Any suggestions are accepted.
Thanks
--
A Srinivas
Index: poppler-0.14.0/poppler/PDFDoc.h
===================================================================
--- poppler-0.14.0/poppler/PDFDoc.h (revision 3)
+++ poppler-0.14.0/poppler/PDFDoc.h (working copy)
@@ -206,6 +206,9 @@
int getPDFMajorVersion() { return pdfMajorVersion; }
int getPDFMinorVersion() { return pdfMinorVersion; }
+ //Return the PDF ID in the trailer dictionary (if any).
+ GBool getID(GooString *permanent_id, GooString *update_id);
+
// Save this file with another name.
int saveAs(GooString *name, PDFWriteMode mode=writeStandard);
// Save this file in the given output stream.
Index: poppler-0.14.0/poppler/PDFDoc.cc
===================================================================
--- poppler-0.14.0/poppler/PDFDoc.cc (revision 3)
+++ poppler-0.14.0/poppler/PDFDoc.cc (working copy)
@@ -70,6 +70,7 @@
#define headerSearchSize 1024 // read this many bytes at beginning of
// file to look for '%PDF'
+#define pdfIdLength 32 // PDF Document IDs (PermanentId, UpdateId) length
//------------------------------------------------------------------------
// PDFDoc
@@ -445,6 +446,58 @@
return lin;
}
+static bool
+get_id(Object val, GooString *id) {
+ char pdfid[pdfIdLength+1];
+ if (val.isString()) {
+ GooString *temp;
+ temp = val.getString();
+ if (temp->getLength() != 16) { // security check
+ return false;
+ } else {
+ char *encodedid = temp->getCString();
+ sprintf(pdfid,"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", encodedid[0] & 0xff, encodedid[1] & 0xff, encodedid[2] & 0xff, encodedid[3] & 0xff, encodedid[4] & 0xff, encodedid[5] & 0xff, encodedid[6] & 0xff, encodedid[7] & 0xff, encodedid[8] & 0xff, encodedid[9] & 0xff, encodedid[10] & 0xff, encodedid[11] & 0xff, encodedid[12] & 0xff, encodedid[13] & 0xff, encodedid[14] & 0xff, encodedid[15] & 0xff);
+ id->Set (pdfid, pdfIdLength);
+ }
+ } else {
+ return false;
+ }
+ return true;
+}
+
+GBool PDFDoc::getID(GooString *permanent_id, GooString *update_id) {
+ Object obj;
+ xref->getTrailerDict()->dictLookup ("ID", &obj);
+
+ if (!obj.isArray())
+ {
+ obj.free();
+ return false;
+ } else if (obj.arrayGetLength() != 2) { // security check
+ return false;
+ }
+
+ Object val1, val2;
+ obj.arrayGet(0, &val1);
+ obj.arrayGet(1, &val2);
+
+ obj.free();
+
+ if (!permanent_id && !update_id) {// security check
+ return false;
+ } else {
+ bool pid, uid;
+ pid = get_id (val1, permanent_id);
+ uid = get_id (val2, update_id);
+ if (!pid && !uid)
+ return false;
+ }
+
+ val1.free();
+ val2.free();
+ return true;
+}
+
int PDFDoc::saveAs(GooString *name, PDFWriteMode mode) {
FILE *f;
OutStream *outStr;
Index: poppler-0.14.0/glib/poppler.h
===================================================================
--- poppler-0.14.0/glib/poppler.h (revision 3)
+++ poppler-0.14.0/glib/poppler.h (working copy)
@@ -80,6 +80,7 @@
} PopplerSelectionStyle;
typedef struct _PopplerDocument PopplerDocument;
+typedef struct _PopplerDocumentId PopplerDocumentId;
typedef struct _PopplerIndexIter PopplerIndexIter;
typedef struct _PopplerFontsIter PopplerFontsIter;
typedef struct _PopplerLayersIter PopplerLayersIter;
Index: poppler-0.14.0/glib/poppler-document.cc
===================================================================
--- poppler-0.14.0/glib/poppler-document.cc (revision 3)
+++ poppler-0.14.0/glib/poppler-document.cc (working copy)
@@ -54,7 +54,9 @@
PROP_PAGE_MODE,
PROP_VIEWER_PREFERENCES,
PROP_PERMISSIONS,
- PROP_METADATA
+ PROP_METADATA,
+ PROP_PERMANENT_ID,
+ PROP_UPDATE_ID
};
static void poppler_document_layers_free (PopplerDocument *document);
@@ -647,7 +649,8 @@
Catalog *catalog;
gchar *str;
guint flag;
-
+ GooString permanent_id, update_id;
+
switch (prop_id)
{
case PROP_TITLE:
@@ -762,6 +765,14 @@
}
}
break;
+ case PROP_PERMANENT_ID:
+ if (document->doc->getID (&permanent_id, NULL))
+ g_value_set_string (value, permanent_id.getCString());
+ break;
+ case PROP_UPDATE_ID:
+ if (document->doc->getID (NULL, &update_id))
+ g_value_set_string (value, update_id.getCString());
+ break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
@@ -931,6 +942,25 @@
"Embedded XML metadata",
NULL,
G_PARAM_READABLE));
+
+ g_object_class_install_property
+ (G_OBJECT_CLASS (klass),
+ PROP_PERMANENT_ID,
+ g_param_spec_string ("permanent-id",
+ "Permanent Id",
+ "Permanent Id of the PDF Document",
+ NULL,
+ G_PARAM_READABLE));
+
+ g_object_class_install_property
+ (G_OBJECT_CLASS (klass),
+ PROP_UPDATE_ID,
+ g_param_spec_string ("update-id",
+ "Update Id",
+ "Update Id of the PDF Document",
+ NULL,
+ G_PARAM_READABLE));
+
}
static void
@@ -1928,7 +1958,83 @@
return NULL;
}
+/* PopplerDocumentId type */
+POPPLER_DEFINE_BOXED_TYPE (PopplerDocumentId, poppler_document_id,
+ poppler_document_id_copy,
+ poppler_document_id_free)
+
+/**
+ * poppler_document_id_new:
+ *
+ * creates a new #PopplerDocumentId
+ *
+ **/
+PopplerDocumentId *
+poppler_document_id_new (void)
+{
+ return g_new0 (PopplerDocumentId, 1);
+}
+
+/**
+ * poppler_document_id_copy:
+ * @id: a #PopplerDocumentId
+ *
+ * Creates a new #PopplerDocumentId as a copy of @id. This must be freed with
+ * poppler_document_id_free().
+ *
+ * Return value: a new #PopplerDocumentId
+ **/
+PopplerDocumentId *
+poppler_document_id_copy (PopplerDocumentId *id)
+{
+ PopplerDocumentId *new_id;
+
+ g_return_val_if_fail (id != NULL, NULL);
+
+ new_id = g_new (PopplerDocumentId, 1);
+ *new_id = *id;
+
+ return new_id;
+}
+
+/**
+ * poppler_document_id_free:
+ * @id: a #PopplerDocumentId
+ *
+ * Frees @id
+ *
+ **/
+void
+poppler_document_id_free (PopplerDocumentId *id)
+{
+ g_free (id);
+}
+
+/**
+ * poppler_document_get_id:
+ * @document: a #PopplerDocument
+ * @documentid: a #PopplerDocumentId
+ *
+ * Returns true if the pdf file contains the ID
+ *
+ * Return value: a gboolean. %TRUE if document contains an ID else %FALSE
+ **/
gboolean
+poppler_document_get_id (PopplerDocument *document, PopplerDocumentId *documentid)
+{
+ GooString permanent_id,update_id;
+
+ if (document->doc->getID (&permanent_id, &update_id)) {
+ g_stpcpy(documentid->permanent_id,permanent_id.getCString());
+ g_stpcpy(documentid->update_id,update_id.getCString());
+
+ return TRUE;
+ } else {
+ return FALSE;
+ }
+}
+
+gboolean
_poppler_convert_pdf_date_to_gtime (GooString *date,
time_t *gdate)
{
Index: poppler-0.14.0/glib/poppler-document.h
===================================================================
--- poppler-0.14.0/glib/poppler-document.h (revision 3)
+++ poppler-0.14.0/glib/poppler-document.h (working copy)
@@ -22,6 +22,8 @@
#include <glib-object.h>
#include "poppler.h"
+#define DOC_ID_LENGTH 33 // 32 bytes for each of the PDF ID (Permanent Id , Update Id) length, and 1 byte for '\0'
+
G_BEGIN_DECLS
#define POPPLER_TYPE_DOCUMENT (poppler_document_get_type ())
@@ -89,6 +91,11 @@
} PopplerPermissions;
+struct _PopplerDocumentId
+{
+ gchar permanent_id[DOCUMENT_ID_LENGTH];
+ gchar update_id[DOCUMENT_ID_LENGTH];
+};
GType poppler_document_get_type (void) G_GNUC_CONST;
@@ -122,6 +129,15 @@
PopplerFormField *poppler_document_get_form_field (PopplerDocument *document,
gint id);
+/* Document Id */
+#define POPPLER_TYPE_DOCUMENT_ID (poppler_document_id_get_type ())
+GType poppler_document_id_get_type (void) G_GNUC_CONST;
+PopplerDocumentId *poppler_document_id_new (void);
+PopplerDocumentId *poppler_document_id_copy (PopplerDocumentId *id);
+void poppler_document_id_free (PopplerDocumentId *id);
+gboolean poppler_document_get_id (PopplerDocument *document,
+ PopplerDocumentId *documentid);
+
/* Interface for getting the Index of a poppler_document */
#define POPPLER_TYPE_INDEX_ITER (poppler_index_iter_get_type ())
GType poppler_index_iter_get_type (void) G_GNUC_CONST;
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