GhostPDF - add some warnings to approximate the old interpreter

If the %PDF-x.y version has non-white space characters between the
minor version number and the EOL the old interpreter issued a warning,
we now do similarly.

If an annotation entry in the Page dictionary was not a dictionary the
old interpreter raised a warning, we were silently ignoring it.

1 files changed, 12 insertions, 0 deletions

diff --git a/pdf/ghostpdf.c b/pdf/ghostpdf.c
index e6751155a..b9444cefc 100644
--- a/pdf/ghostpdf.c
+++ b/pdf/ghostpdf.c
@@ -1339,6 +1339,18 @@ int pdfi_set_input_stream(pdf_context *ctx, stream *stm)
         }
         else {
             ctx->HeaderVersion = version;
+            s += 5;
+            while (((*s >= '0' && *s <= '9') || *s == '.') && *s != 0x00)
+                s++;
+            while (*s != 0x00) {
+                if (*s == 0x09 || *s== 0x0c || *s == 0x20) {
+                    s++;
+                    continue;
+                }
+                if (*s != 0x0A && *s != 0x0D)
+                    pdfi_set_warning(ctx, 0, NULL, W_PDF_VERSION_NO_EOL, "pdfi_set_input_stream", (char *)"%% PDF version not immediately followed with EOL\n");
+                break;
+            }
         }
         if (ctx->args.pdfdebug)
             dmprintf1(ctx->memory, "%% Found header, PDF version is %f\n", ctx->HeaderVersion);