list key-capabilities

doc/DETAILS

@@ -47,6 +47,14 @@ ssb::1536:20:5CE086B5B5A18FF4:1998-07-07:0:::
 	    information may follow in some future versions.
 10. Field:  User-ID.  The value is quoted like a C string to avoid
 	    control characters (the colon is quoted "\x3a").
+11. Field:  Signature class 
+12. Field:  Key capabilities:
+                e = encrypt
+                s = sign
+                c = certify
+            A key may have any combination of them.  The primary key has in
+            addition to these letters, uppercase version of the letter to
+            denote the _usable_ capabilities of the entire key.  
 
 More fields may be added later.
 

g10/ChangeLog

@@ -1,3 +1,8 @@
+2001-03-15  Werner Koch  <wk@gnupg.org>
+
+	* keylist.c (print_capabilities): New.
+	(list_keyblock_colon): and use it here.
+
 2001-03-13  Werner Koch  <wk@gnupg.org>
 
 	* main.c, options.h: New option fixed_list_mode.

g10/keylist.c

@@ -154,6 +154,54 @@ print_key_data( PKT_public_key *pk, u32 *keyid )
     }
 }
 
+static void
+print_capabilities (PKT_public_key *pk, PKT_secret_key *sk, KBNODE keyblock)
+{
+    unsigned int usage = pk? pk->pubkey_usage : sk->pubkey_usage;
+    
+    if ( usage & PUBKEY_USAGE_ENC ) {
+        putchar ('e');
+    }
+    if ( usage & PUBKEY_USAGE_SIG ) {
+        putchar ('s');
+        putchar ('c');
+    }
+    if ( keyblock ) { /* figure our the usable capabilities */
+        KBNODE k;
+        int enc=0, sign=0, cert=0;
+
+        for (k=keyblock; k; k = k->next ) {
+            if ( k->pkt->pkttype == PKT_PUBLIC_KEY 
+                 || k->pkt->pkttype == PKT_PUBLIC_SUBKEY ) {
+                pk = k->pkt->pkt.public_key;
+                if ( pk->is_valid && !pk->is_revoked && !pk->has_expired ) {
+                    if ( pk->pubkey_usage & PUBKEY_USAGE_ENC )
+                        enc = 1;
+                    if ( pk->pubkey_usage & PUBKEY_USAGE_SIG )
+                        sign = cert = 1;
+                }
+            }
+            else if ( k->pkt->pkttype == PKT_SECRET_KEY 
+                      || k->pkt->pkttype == PKT_SECRET_SUBKEY ) {
+                sk = k->pkt->pkt.secret_key;
+                if ( sk->is_valid && !sk->is_revoked && !sk->has_expired ) {
+                    if ( sk->pubkey_usage & PUBKEY_USAGE_ENC )
+                        enc = 1;
+                    if ( sk->pubkey_usage & PUBKEY_USAGE_SIG )
+                        sign = cert = 1;
+                }
+            }
+        }
+        if (enc)
+            putchar ('E');
+        if (sign)
+            putchar ('S');
+        if (cert)
+            putchar ('C');
+    }
+    putchar(':');
+}
+
 
 static void
 list_keyblock_print ( KBNODE keyblock, int secret )
@@ -393,6 +441,8 @@ list_keyblock_colon( KBNODE keyblock, int secret )
     if (opt.fixed_list_mode) {
         /* do not merge the first uid with the primary key */
         putchar(':');
+        putchar(':');
+        print_capabilities (pk, sk, keyblock);
         putchar('\n');
         if( opt.fingerprint )
             fingerprint( pk, sk );
@@ -401,6 +451,7 @@ list_keyblock_colon( KBNODE keyblock, int secret )
         any = 1;
     }
 
+
     for( kbctx=NULL; (node=walk_kbnode( keyblock, &kbctx, 0)) ; ) {
 	if( node->pkt->pkttype == PKT_USER_ID && !opt.fast_list_mode ) {
             /*
@@ -434,8 +485,12 @@ list_keyblock_colon( KBNODE keyblock, int secret )
             print_string( stdout,  node->pkt->pkt.user_id->name,
                           node->pkt->pkt.user_id->len, ':' );
             putchar(':');
+	    if (any)
+                putchar('\n');
+            else {
+                putchar(':');
+                print_capabilities (pk, sk, keyblock);
                 putchar('\n');
-	    if( !any ) {
 		if( opt.fingerprint )
 		    fingerprint( pk, sk );
 		if( opt.with_key_data )
@@ -448,6 +503,9 @@ list_keyblock_colon( KBNODE keyblock, int secret )
 	    PKT_public_key *pk2 = node->pkt->pkt.public_key;
 
 	    if( !any ) {
+                putchar(':');
+                putchar(':');
+                print_capabilities (pk, sk, keyblock);
                 putchar('\n');
 		if( opt.fingerprint )
 		    fingerprint( pk, sk ); /* of the main key */
@@ -479,6 +537,9 @@ list_keyblock_colon( KBNODE keyblock, int secret )
                 printf("%lu", pk->local_id );
             putchar(':');
             putchar(':');
+            putchar(':');
+            putchar(':');
+            print_capabilities (pk2, NULL, NULL);
             putchar('\n');
 	    if( opt.fingerprint > 1 )
 		fingerprint( pk2, NULL );
@@ -490,6 +551,9 @@ list_keyblock_colon( KBNODE keyblock, int secret )
 	    PKT_secret_key *sk2 = node->pkt->pkt.secret_key;
 
 	    if( !any ) {
+                putchar(':');
+                putchar(':');
+                print_capabilities (pk, sk, keyblock);
 		putchar('\n');
 		if( opt.fingerprint )
 		    fingerprint( pk, sk ); /* of the main key */
@@ -497,17 +561,17 @@ list_keyblock_colon( KBNODE keyblock, int secret )
 	    }
 
 	    keyid_from_sk( sk2, keyid2 );
-            printf("ssb::%u:%d:%08lX%08lX:%s:%s:::\n",
+            printf("ssb::%u:%d:%08lX%08lX:%s:%s:::::",
 			nbits_from_sk( sk2 ),
 			sk2->pubkey_algo,
 			(ulong)keyid2[0],(ulong)keyid2[1],
 			datestr_from_sk( sk2 ),
 			sk2->expiredate? strtimestamp(sk2->expiredate):""
-			/* fixme: add LID */
+                   /* fixme: add LID */ );
-						);
+            print_capabilities (NULL, sk2, NULL);
+            putchar ('\n');
 	    if( opt.fingerprint > 1 )
 		fingerprint( NULL, sk2 );
-
 	}
 	else if( opt.list_sigs && node->pkt->pkttype == PKT_SIGNATURE ) {
 	    PKT_signature *sig = node->pkt->pkt.signature;
@@ -516,12 +580,15 @@ list_keyblock_colon( KBNODE keyblock, int secret )
 
 	    if( !any ) { /* no user id, (maybe a revocation follows)*/
 		if( sig->sig_class == 0x20 )
-		    puts("[revoked]");
+		    fputs("[revoked]:", stdout);
 		else if( sig->sig_class == 0x18 )
-		    puts("[key binding]");
+		    fputs("[key binding]:", stdout);
 		else if( sig->sig_class == 0x28 )
-		    puts("[subkey revoked]");
+		    fputs("[subkey revoked]:", stdout);
                 else
+                    putchar (':');
+                putchar(':');
+                print_capabilities (pk, sk, keyblock);
                 putchar('\n');
 		if( opt.fingerprint )
 		    fingerprint( pk, sk );
@@ -577,6 +644,8 @@ list_keyblock_colon( KBNODE keyblock, int secret )
     }
     if( !any ) {/* oops, no user id */
         putchar(':');
+        putchar(':');
+        print_capabilities (pk, sk, keyblock);
 	putchar('\n');
     }
 }