[GNUnet-SVN] [gnunet] 21/171: - add verify and issue to cli

[gnunet]

This is an automated email from the git hooks/post-receive script.

martin-schanzenbach pushed a commit to branch master
in repository gnunet.

commit 646723dd495657a184d1f7e439f4958a72bee1df
Author: Schanzenbach, Martin <address@hidden>
AuthorDate: Fri Dec 2 17:29:08 2016 +0100

    - add verify and issue to cli
---
 src/credential/Makefile.am                   |   1 +
 src/credential/credential_api.c              |  45 +++++++++
 src/credential/gnunet-credential.c           | 139 +++++++++++++++++++++++----
 src/credential/plugin_gnsrecord_credential.c |  10 +-
 src/include/gnunet_credential_service.h      |  22 +----
 5 files changed, 173 insertions(+), 44 deletions(-)

diff --git a/src/credential/Makefile.am b/src/credential/Makefile.am
index 6469895e3..e85c3cc2d 100644
--- a/src/credential/Makefile.am
+++ b/src/credential/Makefile.am
@@ -57,6 +57,7 @@ gnunet_credential_SOURCES = \
 gnunet_credential_LDADD = \
   libgnunetcredential.la \
   $(top_builddir)/src/util/libgnunetutil.la \
+       $(top_builddir)/src/gnsrecord/libgnunetgnsrecord.la \
   $(top_builddir)/src/identity/libgnunetidentity.la \
   $(GN_LIBINTL)
 
diff --git a/src/credential/credential_api.c b/src/credential/credential_api.c
index 8ff66c574..8d3c96ca8 100644
--- a/src/credential/credential_api.c
+++ b/src/credential/credential_api.c
@@ -28,6 +28,7 @@
 #include "gnunet_arm_service.h"
 #include "gnunet_hello_lib.h"
 #include "gnunet_protocols.h"
+#include "gnunet_signatures.h"
 #include "credential.h"
 #include "gnunet_credential_service.h"
 #include "gnunet_identity_service.h"
@@ -406,5 +407,49 @@ GNUNET_CREDENTIAL_verify (struct GNUNET_CREDENTIAL_Handle 
*handle,
   return vr;
 }
 
+/**
+ * Issue an attribute to a subject
+ *
+ * @param handle handle to the Credential service
+ * @param issuer the ego that should be used to issue the attribute
+ * @param subject the subject of the attribute
+ * @param attribute the name of the attribute
+ * @return handle to the queued request
+ */
+struct GNUNET_CREDENTIAL_CredentialRecordData *
+GNUNET_CREDENTIAL_issue (struct GNUNET_CREDENTIAL_Handle *handle,
+                         const struct GNUNET_CRYPTO_EcdsaPrivateKey *issuer,
+                         struct GNUNET_CRYPTO_EcdsaPublicKey *subject,
+                         const char *attribute)
+{
+  struct GNUNET_CREDENTIAL_CredentialRecordData *crd;
+
+  crd = GNUNET_malloc (sizeof (struct GNUNET_CREDENTIAL_CredentialRecordData) 
+ strlen (attribute) + 1);
+
+  crd->purpose.size = htonl (strlen (attribute) + 1 +
+                             sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey) +
+                                              sizeof (struct 
GNUNET_CRYPTO_EccSignaturePurpose) +
+                                              sizeof (struct 
GNUNET_TIME_AbsoluteNBO));
+  crd->purpose.purpose = htonl (GNUNET_SIGNATURE_PURPOSE_CREDENTIAL);
+  GNUNET_CRYPTO_ecdsa_key_get_public (issuer,
+                                      &crd->issuer_key);
+
+  GNUNET_memcpy (&crd[1],
+                 attribute,
+                 strlen (attribute));
+  if (GNUNET_OK !=
+      GNUNET_CRYPTO_ecdsa_sign (issuer,
+                                &crd->purpose,
+                                &crd->sig))
+  {
+    GNUNET_break (0);
+    GNUNET_free (crd);
+    return NULL;
+  }
+  return crd;
+}
+
+
+
 
 /* end of credential_api.c */
diff --git a/src/credential/gnunet-credential.c 
b/src/credential/gnunet-credential.c
index bfd4223ba..eaad6d5cf 100644
--- a/src/credential/gnunet-credential.c
+++ b/src/credential/gnunet-credential.c
@@ -25,6 +25,7 @@
 #include "platform.h"
 #include <gnunet_util_lib.h>
 #include <gnunet_credential_service.h>
+#include <gnunet_gnsrecord_lib.h>
 
 /**
  * Configuration we are using.
@@ -32,6 +33,11 @@
 static const struct GNUNET_CONFIGURATION_Handle *cfg;
 
 /**
+ * EgoLookup
+ */
+static struct GNUNET_IDENTITY_EgoLookup *el;
+
+/**
  * Handle to Credential service.
  */
 static struct GNUNET_CREDENTIAL_Handle *credential;
@@ -62,15 +68,41 @@ static char *subject_key;
 static char *subject_credential;
 
 /**
+ * Subject key
+ */
+struct GNUNET_CRYPTO_EcdsaPublicKey subject_pkey;
+
+/**
+ * Issuer key
+ */
+struct GNUNET_CRYPTO_EcdsaPublicKey issuer_pkey;
+
+
+/**
  * Issuer pubkey string
  */
 static char *issuer_key;
 
 /**
+ * Issuer ego
+ */
+static char *issuer_ego_name;
+
+/**
  * Issuer attribute
  */
 static char *issuer_attr;
 
+/**
+ * Verify mode
+ */
+static uint32_t verify;
+
+/**
+ * Issue mode
+ */
+static uint32_t create_cred;
+
 
 /**
  * Task run on shutdown.  Cleans up everything.
@@ -135,6 +167,45 @@ handle_verify_result (void *cls,
   GNUNET_SCHEDULER_shutdown ();
 }
 
+/**
+ * Callback invoked from identity service with ego information.
+ * An @a ego of NULL means the ego was not found.
+ *
+ * @param cls closure with the configuration
+ * @param ego an ego known to identity service, or NULL
+ */
+static void
+identity_cb (void *cls,
+             const struct GNUNET_IDENTITY_Ego *ego)
+{
+  const struct GNUNET_CRYPTO_EcdsaPrivateKey *privkey;
+  struct GNUNET_CREDENTIAL_CredentialRecordData *crd;
+
+  el = NULL;
+  if (NULL == ego)
+  {
+    if (NULL != issuer_ego_name)
+    {
+      fprintf (stderr,
+               _("Ego `%s' not known to identity service\n"),
+               issuer_ego_name);
+    }
+    GNUNET_SCHEDULER_shutdown ();
+    return;
+  }
+  privkey = GNUNET_IDENTITY_ego_get_private_key (ego);
+  GNUNET_free_non_null (issuer_ego_name);
+  issuer_ego_name = NULL;
+  crd = GNUNET_CREDENTIAL_issue (credential,
+                                 privkey,
+                                 &subject_pkey,
+                                 issuer_attr);
+  printf ("Success.\n");
+  printf (GNUNET_GNSRECORD_value_to_string (GNUNET_GNSRECORD_TYPE_CREDENTIAL,
+                                            crd,
+                                            sizeof (crd) + strlen 
(issuer_attr) + 1));
+}
+
 
 
 
@@ -162,39 +233,53 @@ run (void *cls,
              _("Failed to connect to CREDENTIAL\n"));
     return;
   }
+
+
+
   tt = GNUNET_SCHEDULER_add_delayed (timeout,
                                      &do_timeout, NULL);
   GNUNET_SCHEDULER_add_shutdown (&do_shutdown, NULL);
 
 
 
-  struct GNUNET_CRYPTO_EcdsaPublicKey subject_pkey;
-  struct GNUNET_CRYPTO_EcdsaPublicKey issuer_pkey;
+  if (NULL == subject_key)
+  {
+    fprintf (stderr,
+             _("Subject public key needed\n"));
+    GNUNET_SCHEDULER_shutdown ();
+    return;
 
-  if (NULL != subject_key && NULL != issuer_key)
+  }
+  if (GNUNET_OK !=
+      GNUNET_CRYPTO_ecdsa_public_key_from_string (subject_key,
+                                                  strlen (subject_key),
+                                                  &subject_pkey))
   {
-    if (GNUNET_OK !=
-        GNUNET_CRYPTO_ecdsa_public_key_from_string (subject_key,
-                                                    strlen (subject_key),
-                                                    &subject_pkey))
+    fprintf (stderr,
+             _("Subject public key `%s' is not well-formed\n"),
+             subject_key);
+    GNUNET_SCHEDULER_shutdown ();
+    return;
+  }
+
+  if (GNUNET_YES == verify) {
+    if (NULL == issuer_key)
     {
       fprintf (stderr,
-               _("Subject public key `%s' is not well-formed\n"),
-               subject_key);
+               _("Issuer public key not well-formed\n"));
       GNUNET_SCHEDULER_shutdown ();
       return;
-    }
 
+    }
     if (GNUNET_OK !=
         GNUNET_CRYPTO_ecdsa_public_key_from_string (issuer_key,
                                                     strlen (issuer_key),
                                                     &issuer_pkey))
     {
       fprintf (stderr,
-               _("Authority public key `%s' is not well-formed\n"),
+               _("Issuer public key `%s' is not well-formed\n"),
                issuer_key);
       GNUNET_SCHEDULER_shutdown ();
-      return;
     }
 
     verify_request = GNUNET_CREDENTIAL_verify(credential,
@@ -204,15 +289,26 @@ run (void *cls,
                                               subject_credential,
                                               &handle_verify_result,
                                               NULL);
+  } else if (GNUNET_YES == create_cred) {
+    if (NULL == issuer_ego_name)
+    {
+      fprintf (stderr,
+               _("Issuer ego required\n"));
+      GNUNET_SCHEDULER_shutdown ();
+      return;
+
+    }
+    el = GNUNET_IDENTITY_ego_lookup (cfg,
+                                     issuer_ego_name,
+                                     &identity_cb,
+                                     (void *) cfg);
     return;
-  }
-  else
-  {
+  } else {
     fprintf (stderr,
              _("Please specify name to lookup, subject key and issuer 
key!\n"));
     GNUNET_SCHEDULER_shutdown ();
-    return;
   }
+  return;
 }
 
 
@@ -227,6 +323,12 @@ int
 main (int argc, char *const *argv)
 {
   static const struct GNUNET_GETOPT_CommandLineOption options[] = {
+    {'I', "issue", NULL,
+      gettext_noop ("create credential"), 0,
+      &GNUNET_GETOPT_set_one, &create_cred},
+    {'V', "verify", NULL,
+      gettext_noop ("verify credential against attribute"), 0,
+      &GNUNET_GETOPT_set_one, &verify},
     {'s', "subject", "PKEY",
       gettext_noop ("The public key of the subject to lookup the credential 
for"), 1,
       &GNUNET_GETOPT_set_string, &subject_key},
@@ -236,8 +338,11 @@ main (int argc, char *const *argv)
     {'i', "issuer", "PKEY",
       gettext_noop ("The public key of the authority to verify the credential 
against"), 1,
       &GNUNET_GETOPT_set_string, &issuer_key},
+    {'e', "ego", "EGO",
+      gettext_noop ("The ego to use to issue"), 1,
+      &GNUNET_GETOPT_set_string, &issuer_ego_name},
     {'a', "attribute", "ATTR",
-      gettext_noop ("The issuer attribute to verify against"), 1, 
+      gettext_noop ("The issuer attribute to verify against or to issue"), 1, 
       &GNUNET_GETOPT_set_string, &issuer_attr},
     GNUNET_GETOPT_OPTION_END
   };
diff --git a/src/credential/plugin_gnsrecord_credential.c 
b/src/credential/plugin_gnsrecord_credential.c
index d321a43a4..c7cbb8bdd 100644
--- a/src/credential/plugin_gnsrecord_credential.c
+++ b/src/credential/plugin_gnsrecord_credential.c
@@ -77,7 +77,6 @@ credential_value_to_string (void *cls,
     char *cred_str;
     char *subject_pkey;
     char *issuer_pkey;
-    uint32_t cf; // Credential flags
     if (data_size < sizeof (struct GNUNET_CREDENTIAL_CredentialRecordData))
         return NULL; /* malformed */
     memcpy (&cred,
@@ -86,13 +85,11 @@ credential_value_to_string (void *cls,
     cdata = data;  
     subject_pkey = GNUNET_CRYPTO_ecdsa_public_key_to_string 
(&cred.subject_key);
     issuer_pkey = GNUNET_CRYPTO_ecdsa_public_key_to_string (&cred.issuer_key);
-    cf = ntohl (cred.credential_flags);
 
      GNUNET_asprintf (&cred_str,
-                     "%s %s %u %s",
+                     "%s %s %s",
                      subject_pkey,
                      issuer_pkey,
-                     (unsigned int) cf,
                      &cdata[sizeof (cred)]);
       GNUNET_free (subject_pkey);
       GNUNET_free (issuer_pkey);
@@ -132,7 +129,6 @@ credential_string_to_value (void *cls,
     case GNUNET_GNSRECORD_TYPE_CREDENTIAL:
       { 
         struct GNUNET_CREDENTIAL_CredentialRecordData *cred;
-        unsigned int cf; // credential flags
 
         size_t enclen = (sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey)) * 8;
         if (enclen % 5 > 0)
@@ -143,10 +139,9 @@ credential_string_to_value (void *cls,
         char name[253 + 1];
 
         if (5 != SSCANF (s,
-                         "%52s %52s %u %253s",
+                         "%52s %52s %253s",
                          subject_pkey,
                          issuer_pkey,
-                         &cf,
                          name))
         {
           GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
@@ -162,7 +157,6 @@ credential_string_to_value (void *cls,
         GNUNET_CRYPTO_ecdsa_public_key_from_string (issuer_pkey,
                                                     strlen (issuer_pkey),
                                                     &cred->issuer_key);
-        cred->credential_flags = htonl (cf);
         GNUNET_memcpy (&cred[1],
                        name,
                        strlen (name));
diff --git a/src/include/gnunet_credential_service.h 
b/src/include/gnunet_credential_service.h
index b996b77db..088d0c75e 100644
--- a/src/include/gnunet_credential_service.h
+++ b/src/include/gnunet_credential_service.h
@@ -99,11 +99,6 @@ struct GNUNET_CREDENTIAL_CredentialRecordData {
    */
   struct GNUNET_CRYPTO_EcdsaPublicKey subject_key;
   
-    /**
-   * Flags for this credential
-   */
-  uint32_t credential_flags GNUNET_PACKED;
-
   /**
    * Expiration time of this credential
    */
@@ -169,15 +164,6 @@ typedef void (*GNUNET_CREDENTIAL_VerifyResultProcessor) 
(void *cls,
               uint32_t result);
 
 /**
- * Iterator called on obtained result for an attribute issuance.
- *
- * @param cls closure
- * @param result the record data that can be handed to the subject
- */
-typedef void (*GNUNET_CREDENTIAL_IssueResultProcessor) (void *cls,
-                                                 struct 
GNUNET_CREDENTIAL_AttributeRecordData *data);
-
-/**
  * Iterator called on obtained result for an attribute delegation.
  *
  * @param cls closure
@@ -271,13 +257,11 @@ GNUNET_CREDENTIAL_remove_delegation (struct 
GNUNET_CREDENTIAL_Handle *handle,
  * @param attribute the name of the attribute
  * @return handle to the queued request
  */
-struct GNUNET_CREDENTIAL_Request *
+struct GNUNET_CREDENTIAL_CredentialRecordData *
 GNUNET_CREDENTIAL_issue (struct GNUNET_CREDENTIAL_Handle *handle,
-                         struct GNUNET_IDENTITY_Ego *issuer,
+                         const struct GNUNET_CRYPTO_EcdsaPrivateKey *issuer,
                          struct GNUNET_CRYPTO_EcdsaPublicKey *subject,
-                         const char *attribute,
-                         GNUNET_CREDENTIAL_IssueResultProcessor proc,
-                         void *proc_cls);
+                         const char *attribute);
 
 
 /**

-- 
To stop receiving notification emails like this one, please contact
address@hidden