Added sign functionality

gpgme/Makefile.am

@@ -20,6 +20,7 @@ libgpgme_la_SOURCES = \
 	encrypt.c \
 	decrypt.c \
 	verify.c \
+	sign.c \
         key.c key.h \
 	keylist.c \
         rungpg.c rungpg.h status-table.h \

gpgme/context.h

@@ -29,6 +29,7 @@ typedef enum {
     RESULT_TYPE_NONE = 0,
     RESULT_TYPE_VERIFY,
     RESULT_TYPE_DECRYPT,
+    RESULT_TYPE_SIGN,
 } ResultType;
 
 
@@ -52,14 +53,14 @@ struct gpgme_context_s {
     GpgObject gpg; /* the running gpg process */
 
     int verbosity;  /* level of verbosity to use */
-    int use_armor;  /* use armoring */
-
-    
+    int use_armor;  
+    int use_textmode;
     
     ResultType result_type;
     union {
         VerifyResult verify;
         DecryptResult decrypt;
+        SignResult sign;
     } result;
 
     GpgmeData notation;    /* last signature notation */

gpgme/decrypt.c

@@ -174,7 +174,9 @@ gpgme_op_decrypt ( GpgmeCtx c, GpgmeData in, GpgmeData out )
             err = mk_error (Out_Of_Core);
         else {
             assert ( c->result.decrypt );
-            if ( c->result.decrypt->failed ) 
+            if ( c->result.decrypt->no_passphrase ) 
+                err = mk_error (No_Passphrase);
+            else if ( c->result.decrypt->failed ) 
                 err = mk_error (Decryption_Failed);
             else if (!c->result.decrypt->okay)
                 err = mk_error (No_Data);

gpgme/gpgme.c

@@ -49,7 +49,7 @@ gpgme_new (GpgmeCtx *r_ctx)
     if (!c)
         return mk_error (Out_Of_Core);
     c->verbosity = 1;
-    c->use_armor = 1;
+    c->use_armor = 1; /* fixme: reset this to 0 */
     *r_ctx = c;
     return 0;
 }
@@ -85,6 +85,9 @@ _gpgme_release_result ( GpgmeCtx c )
       case RESULT_TYPE_DECRYPT:
         _gpgme_release_decrypt_result ( c->result.decrypt );
         break;
+      case RESULT_TYPE_SIGN:
+        _gpgme_release_sign_result ( c->result.sign );
+        break;
     }
 
     c->result.verify = NULL;
@@ -101,8 +104,21 @@ gpgme_op_get_notation ( GpgmeCtx c )
 }
 
 
-
-
+void
+gpgme_op_set_armor ( GpgmeCtx c, int yes )
+{
+    if ( !c )
+        return; /* oops */
+    c->use_armor = yes;
+}
+
+void
+gpgme_op_set_textmode ( GpgmeCtx c, int yes )
+{
+    if ( !c )
+        return; /* oops */
+    c->use_textmode = yes;
+}
 
 
 

gpgme/gpgme.h

@@ -61,6 +61,7 @@ typedef enum {
     GPGME_Invalid_Mode = 16,
     GPGME_File_Error = 17,  /* errno is set in this case */
     GPGME_Decryption_Failed = 18,
+    GPGME_No_Passphrase = 19,
 } GpgmeError;
 
 typedef enum {
@@ -87,6 +88,8 @@ void       gpgme_release ( GpgmeCtx c );
 GpgmeCtx   gpgme_wait ( GpgmeCtx c, int hang );
 
 char *gpgme_op_get_notation ( GpgmeCtx c );
+void gpgme_op_set_armor ( GpgmeCtx c, int yes );
+void gpgme_op_set_textmode ( GpgmeCtx c, int yes );
 
 
 /* Functions to handle recipients */
@@ -120,6 +123,7 @@ GpgmeError gpgme_op_encrypt_start ( GpgmeCtx c,
                                     GpgmeData in, GpgmeData out );
 GpgmeError gpgme_op_decrypt_start ( GpgmeCtx c,
                                     GpgmeData ciph, GpgmeData plain );
+GpgmeError gpgme_op_sign_start ( GpgmeCtx c, GpgmeData in, GpgmeData out );
 GpgmeError gpgme_op_verify_start ( GpgmeCtx c,
                                    GpgmeData sig, GpgmeData text );
 
@@ -134,6 +138,7 @@ GpgmeError gpgme_op_keylist_next ( GpgmeCtx c, GpgmeKey *r_key );
 GpgmeError gpgme_op_encrypt ( GpgmeCtx c, GpgmeRecipients recp,
                               GpgmeData in, GpgmeData out );
 GpgmeError gpgme_op_decrypt ( GpgmeCtx c, GpgmeData in, GpgmeData out );
+GpgmeError gpgme_op_sign ( GpgmeCtx c, GpgmeData in, GpgmeData out );
 GpgmeError gpgme_op_verify ( GpgmeCtx c, GpgmeData sig, GpgmeData text,
                              GpgmeSigStat *r_status );
 

gpgme/ops.h

@@ -65,6 +65,9 @@ void _gpgme_release_verify_result ( VerifyResult res );
 /*-- decrypt.c --*/
 void _gpgme_release_decrypt_result ( DecryptResult res );
 
+/*-- sign.c --*/
+void _gpgme_release_sign_result ( SignResult res );
+
 
 #endif /* OPS_H */
 

gpgme/rungpg.c

@@ -524,12 +524,14 @@ _gpgme_gpg_spawn( GpgObject gpg, void *opaque )
             }
             /* We normally don't want all the normal output */
             if ( !duped_stderr ) {
+                if (!getenv ("GPGME_DEBUG") ) {
                     if ( dup2 ( fd, 2 ) == -1 ) {
                         fprintf (stderr,"dup2(dev/null, 2) failed: %s\n",
                                  strerror (errno) );
                         _exit (8);
                     }
                 }
+            }
             close (fd);
         }
 

gpgme/sign.c

@@ -0,0 +1,190 @@
+/* sign.c -  signing functions
+ *	Copyright (C) 2000 Werner Koch (dd9jn)
+ *
+ * This file is part of GPGME.
+ *
+ * GPGME is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * GPGME is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include "util.h"
+#include "context.h"
+#include "ops.h"
+
+
+struct  sign_result_s {
+    int no_passphrase;
+    int okay;
+};
+
+
+void
+_gpgme_release_sign_result ( SignResult res )
+{
+    xfree (res);
+}
+
+
+
+static void
+sign_status_handler ( GpgmeCtx ctx, GpgStatusCode code, char *args )
+{
+    if ( ctx->out_of_core )
+        return;
+    if ( ctx->result_type == RESULT_TYPE_NONE ) {
+        assert ( !ctx->result.sign );
+        ctx->result.sign = xtrycalloc ( 1, sizeof *ctx->result.sign );
+        if ( !ctx->result.sign ) {
+            ctx->out_of_core = 1;
+            return;
+        }
+        ctx->result_type = RESULT_TYPE_SIGN;
+    }
+    assert ( ctx->result_type == RESULT_TYPE_SIGN );
+
+    switch (code) {
+      case STATUS_EOF:
+        break;
+
+      case STATUS_NEED_PASSPHRASE:
+      case STATUS_NEED_PASSPHRASE_SYM:
+        fprintf (stderr, "Ooops: Need a passphrase -  use the agent\n");
+        break;
+
+      case STATUS_MISSING_PASSPHRASE:
+        fprintf (stderr, "Missing passphrase - stop\n");;
+        ctx->result.sign->no_passphrase = 1;
+        break;
+
+      case STATUS_SIG_CREATED:
+        /* fixme: we have no error return for multible signatures */
+        ctx->result.sign->okay =1;
+        break;
+
+      default:
+        fprintf (stderr, "sign_status: code=%d not handled\n", code );
+        break;
+    }
+}
+
+
+
+GpgmeError
+gpgme_op_sign_start ( GpgmeCtx c, GpgmeData in, GpgmeData out )
+{
+    int rc = 0;
+    int i;
+
+    fail_on_pending_request( c );
+    c->pending = 1;
+
+    _gpgme_release_result (c);
+    c->out_of_core = 0;
+
+    /* do some checks */
+    assert ( !c->gpg );
+        
+    /* create a process object */
+    rc = _gpgme_gpg_new ( &c->gpg );
+    if (rc)
+        goto leave;
+
+    _gpgme_gpg_set_status_handler ( c->gpg, sign_status_handler, c );
+
+    /* build the commandline */
+    _gpgme_gpg_add_arg ( c->gpg, "--sign" );
+    _gpgme_gpg_add_arg ( c->gpg, "--detach" );
+    if ( c->use_armor )
+        _gpgme_gpg_add_arg ( c->gpg, "--armor" );
+    if ( c->use_textmode )
+        _gpgme_gpg_add_arg ( c->gpg, "--textmode" );
+    for ( i=0; i < c->verbosity; i++ )
+        _gpgme_gpg_add_arg ( c->gpg, "--verbose" );
+    
+    /* Check the supplied data */
+    if ( gpgme_data_get_type (in) == GPGME_DATA_TYPE_NONE ) {
+        rc = mk_error (No_Data);
+        goto leave;
+    }
+    _gpgme_data_set_mode (in, GPGME_DATA_MODE_OUT );
+    if ( !out || gpgme_data_get_type (out) != GPGME_DATA_TYPE_NONE ) {
+        rc = mk_error (Invalid_Value);
+        goto leave;
+    }
+    _gpgme_data_set_mode (out, GPGME_DATA_MODE_IN );
+
+    /* Tell the gpg object about the data */
+    _gpgme_gpg_add_data ( c->gpg, in, 0 );
+    _gpgme_gpg_add_data ( c->gpg, out, 1 );
+
+    /* and kick off the process */
+    rc = _gpgme_gpg_spawn ( c->gpg, c );
+
+ leave:
+    if (rc) {
+        c->pending = 0; 
+        _gpgme_gpg_release ( c->gpg ); c->gpg = NULL;
+    }
+    return rc;
+}
+
+
+/**
+ * gpgme_op_sign:
+ * @c: The context
+ * @in: Data to be signed
+ * @out: Detached signature
+ * 
+ * Create a detached signature for @in and write it to @out.
+ * The data will be signed using either the default key or the ones
+ * defined through @c.
+ * 
+ * Return value: 0 on success or an error code.
+ **/
+GpgmeError
+gpgme_op_sign ( GpgmeCtx c, GpgmeData in, GpgmeData out )
+{
+    GpgmeError err = gpgme_op_sign_start ( c, in, out );
+    if ( !err ) {
+        gpgme_wait (c, 1);
+        if ( c->result_type != RESULT_TYPE_SIGN )
+            err = mk_error (General_Error);
+        else if ( c->out_of_core )
+            err = mk_error (Out_Of_Core);
+        else {
+            assert ( c->result.sign );
+            if ( c->result.sign->no_passphrase ) 
+                err = mk_error (No_Passphrase);
+            else if (!c->result.sign->okay)
+                err = mk_error (No_Data); /* Hmmm: choose a better error? */
+        }
+        c->pending = 0;
+    }
+    return err;
+}
+
+
+
+
+
+
+
+
+

gpgme/types.h

@@ -51,6 +51,10 @@ typedef struct verify_result_s *VerifyResult;
 struct decrypt_result_s;
 typedef struct decrypt_result_s *DecryptResult;
 
+/*-- sign.c --*/
+struct sign_result_s;
+typedef struct sign_result_s *SignResult;
+
 /*-- key.c --*/
 
 

tests/Makefile.am

@@ -1,8 +1,8 @@
 ## Process this file with automake to create Makefile.in
 
-TESTS = t-encrypt t-decrypt t-verify t-keylist
+TESTS = t-encrypt t-sign t-decrypt t-verify t-keylist
 
-EXTRA_DIST = cipher-1.asc
+EXTRA_DIST = cipher-1.asc geheim.txt
 
 INCLUDES = -I$(top_srcdir)/include -I$(top_srcdir)/intl
 

tests/geheim.txt

@@ -0,0 +1,2 @@
+Wenn Sie dies lesen können, ist es wohl nicht
+geheim genug.

tests/t-sign.c

@@ -0,0 +1,89 @@
+/* t-sign.c  - regression test
+ *	Copyright (C) 2000 Werner Koch (dd9jn)
+ *
+ * This file is part of GPGME.
+ *
+ * GPGME is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * GPGME is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include "../gpgme/gpgme.h"
+
+#define fail_if_err(a) do { if(a) {                                       \
+                               fprintf (stderr, "%s:%d: GpgmeError %s\n", \
+                                __FILE__, __LINE__, gpgme_strerror(a));   \
+                                exit (1); }                               \
+                             } while(0)
+
+static void
+print_data ( GpgmeData dh )
+{
+    char buf[100];
+    size_t nread;
+    GpgmeError err;
+
+    err = gpgme_data_rewind ( dh );
+    fail_if_err (err);
+    while ( !(err = gpgme_data_read ( dh, buf, 100, &nread )) ) {
+        fwrite ( buf, nread, 1, stdout );
+    }
+    if (err != GPGME_EOF) 
+        fail_if_err (err);
+}
+
+
+
+int 
+main (int argc, char **argv )
+{
+    GpgmeCtx ctx;
+    GpgmeError err;
+    GpgmeData in, out;
+
+  do {
+    err = gpgme_new (&ctx);
+    fail_if_err (err);
+
+    err = gpgme_data_new_from_mem ( &in, "Hallo Leute\n", 12, 0 );
+    fail_if_err (err);
+
+    err = gpgme_data_new ( &out );
+    fail_if_err (err);
+
+    gpgme_op_set_textmode (ctx, 1);
+    gpgme_op_set_armor (ctx, 1);
+    err = gpgme_op_sign (ctx, in, out );
+    fail_if_err (err);
+
+    fflush (NULL);
+    fputs ("Begin Result:\n", stdout );
+    print_data (out);
+    fputs ("End Result.\n", stdout );
+   
+    gpgme_data_release (in);
+    gpgme_data_release (out);
+    gpgme_release (ctx);
+  } while ( argc > 1 && !strcmp( argv[1], "--loop" ) );
+   
+    return 0;
+}
+
+
+
+