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| author | Tor Andersson <tor.andersson@artifex.com> | 2018-02-12 13:29:37 +0100 |
|---|---|---|
| committer | Tor Andersson <tor.andersson@artifex.com> | 2018-02-12 15:27:58 +0100 |
| commit | f597f8dc0552b8e8facd59b11ac64f87fe6736db (patch) | |
| tree | 7ff4b811ff28adaebace7222a91b7faf77f0f7cf | |
| parent | e09f69509f160a22c9290fac054b790b0a80a0cc (diff) | |
| download | mupdf-f597f8dc0552b8e8facd59b11ac64f87fe6736db.tar.xz | |
Expose detailed PDF permissions.
| -rw-r--r-- | include/mupdf/pdf/crypt.h | 21 | ||||
| -rw-r--r-- | source/pdf/pdf-crypt.c | 25 |
2 files changed, 31 insertions, 15 deletions
diff --git a/include/mupdf/pdf/crypt.h b/include/mupdf/pdf/crypt.h index c01d3978..04c884eb 100644 --- a/include/mupdf/pdf/crypt.h +++ b/include/mupdf/pdf/crypt.h @@ -24,6 +24,27 @@ void pdf_print_crypt(fz_context *ctx, fz_output *out, pdf_crypt *crypt); void pdf_write_digest(fz_context *ctx, fz_output *out, pdf_obj *byte_range, int digest_offset, int digest_length, pdf_pkcs7_signer *signer); /* + User access permissions from PDF reference. +*/ +enum +{ + PDF_PERM_PRINT = 1 << 2, + PDF_PERM_MODIFY = 1 << 3, + PDF_PERM_COPY = 1 << 4, + PDF_PERM_ANNOTATE = 1 << 5, + PDF_PERM_FORM = 1 << 8, + PDF_PERM_ACCESSIBILITY = 1 << 9, /* deprecated in pdf 2.0 (this permission is always granted) */ + PDF_PERM_ASSEMBLE = 1 << 10, + PDF_PERM_PRINT_HQ = 1 << 11, + PDF_DEFAULT_PERM_FLAGS = 0xFFFFFFFC /* all permissions granted, reserved bits set appropriately */ +}; + +/* + pdf_document_permissions: access the detailed permissions flag. +*/ +int pdf_document_permissions(fz_context *ctx, pdf_document *doc); + +/* pdf_signature_widget_byte_range: retrieve the byte range for a signature widget */ int pdf_signature_widget_byte_range(fz_context *ctx, pdf_document *doc, pdf_widget *widget, fz_range *byte_range); diff --git a/source/pdf/pdf-crypt.c b/source/pdf/pdf-crypt.c index f73617ff..a62b12f0 100644 --- a/source/pdf/pdf-crypt.c +++ b/source/pdf/pdf-crypt.c @@ -12,19 +12,6 @@ enum PDF_CRYPT_UNKNOWN, }; -enum -{ - PDF_PERM_PRINT = 1 << 2, - PDF_PERM_CHANGE = 1 << 3, - PDF_PERM_COPY = 1 << 4, - PDF_PERM_NOTES = 1 << 5, - PDF_PERM_FILL_FORM = 1 << 8, - PDF_PERM_ACCESSIBILITY = 1 << 9, - PDF_PERM_ASSEMBLE = 1 << 10, - PDF_PERM_HIGH_RES_PRINT = 1 << 11, - PDF_DEFAULT_PERM_FLAGS = 0xfffc -}; - typedef struct pdf_crypt_filter_s pdf_crypt_filter; struct pdf_crypt_filter_s @@ -816,12 +803,20 @@ pdf_has_permission(fz_context *ctx, pdf_document *doc, fz_permission p) { case FZ_PERMISSION_PRINT: return doc->crypt->p & PDF_PERM_PRINT; case FZ_PERMISSION_COPY: return doc->crypt->p & PDF_PERM_COPY; - case FZ_PERMISSION_EDIT: return doc->crypt->p & PDF_PERM_CHANGE; - case FZ_PERMISSION_ANNOTATE: return doc->crypt->p & PDF_PERM_NOTES; + case FZ_PERMISSION_EDIT: return doc->crypt->p & PDF_PERM_MODIFY; + case FZ_PERMISSION_ANNOTATE: return doc->crypt->p & PDF_PERM_ANNOTATE; } return 1; } +int +pdf_document_permissions(fz_context *ctx, pdf_document *doc) +{ + if (doc->crypt) + return doc->crypt->p; + return PDF_DEFAULT_PERM_FLAGS; +} + unsigned char * pdf_crypt_key(fz_context *ctx, pdf_document *doc) { |