Add function gpgme_data_identify.

* src/gpgme.h.in (gpgme_data_type_t): New.
(gpgme_data_identify): New prototype.
* src/data-identify.c: New.
* src/parsetlv.c, src/parsetlv.h: New.  Take from gpa.
* src/libgpgme.vers, src/gpgme.def: Add gpgme_data_identify.
* src/gpgme-tool.c (status): Add STATUS_IDENTIFY_RESULT.
(gt_identify): New.
(cmd_identify): New.

(hlp_passwd): Move close to cmd_passwd.
--

It is often useful to have a way to identify the data which needs
processing.  This is such a common task that it makes sense to
implement this in gpgme to avoid diverging implementations.

1 files changed, 19 insertions, 0 deletions

diff --git a/src/gpgme.h.in b/src/gpgme.h.in
index f644a509..5c4de6be 100644
--- a/src/gpgme.h.in
+++ b/src/gpgme.h.in
@@ -210,6 +210,22 @@ typedef enum
   }
 gpgme_data_encoding_t;
 
+/* Known data types.  */
+typedef enum
+  {
+    GPGME_DATA_TYPE_INVALID      = 0,   /* Not detected.  */
+    GPGME_DATA_TYPE_UNKNOWN      = 1,
+    GPGME_DATA_TYPE_PGP_SIGNED   = 0x10,
+    GPGME_DATA_TYPE_PGP_OTHER    = 0x12,
+    GPGME_DATA_TYPE_PGP_KEY      = 0x13,
+    GPGME_DATA_TYPE_CMS_SIGNED   = 0x20,
+    GPGME_DATA_TYPE_CMS_ENCRYPTED= 0x21,
+    GPGME_DATA_TYPE_CMS_OTHER    = 0x22,
+    GPGME_DATA_TYPE_X509_CERT    = 0x23,
+    GPGME_DATA_TYPE_PKCS12       = 0x24,
+  }
+gpgme_data_type_t;
+
 
 /* Public key algorithms from libgcrypt.  */
 typedef enum
@@ -1149,6 +1165,9 @@ char *gpgme_data_get_file_name (gpgme_data_t dh);
 gpgme_error_t gpgme_data_set_file_name (gpgme_data_t dh,
 					const char *file_name);
 
+/* Try to identify the type of the data in DH.  */
+gpgme_data_type_t gpgme_data_identify (gpgme_data_t dh, int reserved);
+
 
 /* Create a new data buffer which retrieves the data from the callback
    function READ_CB.  Deprecated, please use gpgme_data_new_from_cbs