protect against broken info dictionaries

[swftools.git] / lib / pdf / pdf.cc

diff --git a/lib/pdf/pdf.cc b/lib/pdf/pdf.cc
index eba2a67..4bcf9b9 100644 (file)
--- a/lib/pdf/pdf.cc
+++ b/lib/pdf/pdf.cc
@@ -89,6 +89,7 @@ void render2(gfxpage_t*page, gfxdevice_t*output)
     pi->outputDev->setXRef(pi->doc, pi->doc->getXRef());
     pi->doc->displayPage((OutputDev*)pi->outputDev, page->nr, zoom, zoom, /*rotate*/0, true, true, /*doLinks*/(int)1);
     pi->doc->processLinks((OutputDev*)pi->outputDev, page->nr);
+    pi->outputDev->endframe();
 }
 
     
@@ -136,16 +137,16 @@ void pdf_doc_destroy(gfxdocument_t*gfx)
     }
 }
 
-void pdf_doc_set_parameter(gfxdocument_t*gfx, char*name, char*value)
+void pdf_doc_set_parameter(gfxdocument_t*gfx, const char*name, const char*value)
 {
     pdf_doc_internal_t*i= (pdf_doc_internal_t*)gfx->internal;
+    GFXOutputDev*o = i->outputDev;
     if(!strcmp(name, "pagemap")) {
-       GFXOutputDev*o = i->outputDev;
        int pdfpage=0, outputpage=0;
        sscanf(value,"%d:%d", &pdfpage, &outputpage);
        o->preparePage(pdfpage, outputpage);
     } else {
-       msg("<warning> Ignored parameter: %s=%s", name, value);
+        o->setParameter(name, value);
     }
 }
 
@@ -178,7 +179,7 @@ static char*getInfoString(Dict *infoDict, char *key)
     GString *s1, *s2;
     int i;
 
-    if (infoDict->lookup(key, &obj)->isString()) {
+    if (infoDict && infoDict->lookup(key, &obj)->isString()) {
        s1 = obj.getString();
        if ((s1->getChar(0) & 0xff) == 0xfe &&
            (s1->getChar(1) & 0xff) == 0xff) {
@@ -210,7 +211,7 @@ static char*getInfoDate(Dict *infoDict, char *key)
     Object obj;
     char *s;
 
-    if (infoDict->lookup(key, &obj)->isString()) {
+    if (infoDict && infoDict->lookup(key, &obj)->isString()) {
        s = obj.getString()->getCString();
        if (s[0] == 'D' && s[1] == ':') {
          s += 2;
@@ -222,7 +223,7 @@ static char*getInfoDate(Dict *infoDict, char *key)
     return strdup("");
 }
 
-char* pdf_doc_getinfo(gfxdocument_t*doc, char*name)
+char* pdf_doc_getinfo(gfxdocument_t*doc, const char*name)
 {
     pdf_doc_internal_t*i= (pdf_doc_internal_t*)doc->internal;
     if(!strcmp(name, "title")) return getInfoString(i->docinfo.getDict(), "Title");
@@ -234,16 +235,22 @@ char* pdf_doc_getinfo(gfxdocument_t*doc, char*name)
     else if(!strcmp(name, "creationdate")) return getInfoDate(i->docinfo.getDict(), "CreationDate");
     else if(!strcmp(name, "moddate")) return getInfoDate(i->docinfo.getDict(), "ModDate");
     else if(!strcmp(name, "linearized")) return strdup(i->doc->isLinearized() ? "yes" : "no");
+    else if(!strcmp(name, "tagged")) return strdup(i->doc->getStructTreeRoot()->isDict() ? "yes" : "no");
     else if(!strcmp(name, "encrypted")) return strdup(i->doc->isEncrypted() ? "yes" : "no");
     else if(!strcmp(name, "oktoprint")) return strdup(i->doc->okToPrint() ? "yes" : "no");
     else if(!strcmp(name, "oktocopy")) return strdup(i->doc->okToCopy() ? "yes" : "no");
     else if(!strcmp(name, "oktochange")) return strdup(i->doc->okToChange() ? "yes" : "no");
     else if(!strcmp(name, "oktoaddnotes")) return strdup(i->doc->okToAddNotes() ? "yes" : "no");
+    else if(!strcmp(name, "version")) { 
+        char buf[32];
+        sprintf(buf, "%.1f", i->doc->getPDFVersion());
+        return strdup(buf);
+    }
     return 0;
 }
 
 
-void storeDeviceParameter(char*name, char*value)
+static void storeDeviceParameter(const char*name, const char*value)
 {
     parameter_t*p = new parameter_t();
     p->name = strdup(name);
@@ -258,7 +265,7 @@ void storeDeviceParameter(char*name, char*value)
     }
 }
 
-void pdf_set_parameter(char*name, char*value)
+static void pdf_set_parameter(const char*name, const char*value)
 {
     msg("<verbose> setting parameter %s to \"%s\"", name, value);
     if(!strncmp(name, "fontdir", strlen("fontdir"))) {
@@ -291,7 +298,7 @@ void pdf_set_parameter(char*name, char*value)
     }
 }
 
-gfxdocument_t*pdf_open(char*filename)
+static gfxdocument_t*pdf_open(const char*filename)
 {
     gfxdocument_t*pdf_doc = (gfxdocument_t*)malloc(sizeof(gfxdocument_t));
     memset(pdf_doc, 0, sizeof(gfxdocument_t));
@@ -344,7 +351,7 @@ gfxdocument_t*pdf_open(char*filename)
               i->protect = 1;
     }
 
-    InfoOutputDev*io = new InfoOutputDev();
+    InfoOutputDev*io = new InfoOutputDev(i->doc->getXRef());
     int t;
     i->pages = (pdf_page_info_t*)malloc(sizeof(pdf_page_info_t)*pdf_doc->num_pages);
     memset(i->pages,0,sizeof(pdf_page_info_t)*pdf_doc->num_pages);