/*
This file is part of GNUnet.
- (C) 2009 Christian Grothoff (and other contributing authors)
+ (C) 2012,2013 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
* @author Matthias Wachs
*/
#include "platform.h"
-#include "gnunet_getopt_lib.h"
#include "gnunet_util_lib.h"
#include "gnunet_core_service.h"
#include "gnunet_statistics_service.h"
#include "gnunet-daemon-experimentation.h"
-struct GNUNET_CONTAINER_MultiHashMap *issuer;
+
+/**
+ * Hashmap containing valid experiment issuers.
+ */
+struct GNUNET_CONTAINER_MultiHashMap *valid_issuers;
+
+/**
+ * Hashmap containing valid experiments
+ */
+static struct GNUNET_CONTAINER_MultiHashMap *experiments;
+
+
+/**
+ * Verify experiment signature
+ *
+ * @param i issuer
+ * @param e experiment
+ * @return #GNUNET_OK or #GNUNET_SYSERR
+ */
+static int
+experiment_verify (struct Issuer *i, struct Experiment *e)
+{
+ GNUNET_assert (NULL != i);
+ GNUNET_assert (NULL != e);
+
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Verification: to be implemented\n");
+ return GNUNET_OK;
+}
+
+
+static int
+free_experiment (void *cls,
+ const struct GNUNET_HashCode * key,
+ void *value)
+{
+ struct Experiment *e = value;
+
+ GNUNET_break (0 == GNUNET_CONTAINER_multihashmap_remove (experiments, key, value));
+ GNUNET_free_non_null (e->description);
+ GNUNET_free_non_null (e->name);
+ GNUNET_free (e);
+ return GNUNET_OK;
+}
+
+
+/**
+ * Free issuer element
+ *
+ * @param cls unused
+ * @param key the key
+ * @param value the issuer element to free
+ * @return GNUNET_OK to continue
+ */
+static int
+free_issuer (void *cls,
+ const struct GNUNET_HashCode * key,
+ void *value)
+{
+ struct Issuer *i = value;
+
+ GNUNET_break (0 == GNUNET_CONTAINER_multihashmap_remove (valid_issuers,
+ key,
+ i));
+ GNUNET_free (i);
+ return GNUNET_OK;
+}
+
/**
* Is peer a valid issuer
*
- * @return GNUNET_YES or GNUNET_NO
+ * @return #GNUNET_YES or #GNUNET_NO
*/
int
-GNUNET_EXPERIMENTATION_experiments_issuer_accepted (struct GNUNET_PeerIdentity *issuer_ID)
+GED_experiments_issuer_accepted (const struct GNUNET_CRYPTO_EddsaPublicKey *issuer_id)
{
- if (GNUNET_CONTAINER_multihashmap_contains (issuer, &issuer_ID->hashPubKey))
- return GNUNET_YES;
- else
- return GNUNET_NO;
+ struct GNUNET_HashCode hash;
+
+ GNUNET_CRYPTO_hash (issuer_id, sizeof (struct GNUNET_CRYPTO_EddsaPublicKey), &hash);
+ if (GNUNET_CONTAINER_multihashmap_contains (valid_issuers, &hash))
+ return GNUNET_YES;
+ return GNUNET_NO;
}
/**
- * Start experiments management
+ * Get the key under which the given experiment is stored in the
+ * experiment map.
+ */
+static void
+get_experiment_key (const struct GNUNET_CRYPTO_EddsaPublicKey *issuer,
+ const char *name,
+ const struct GNUNET_TIME_Absolute version,
+ struct GNUNET_HashCode *key)
+{
+ GNUNET_assert (GNUNET_YES ==
+ GNUNET_CRYPTO_kdf (key, sizeof (struct GNUNET_HashCode),
+ issuer, sizeof (struct GNUNET_CRYPTO_EddsaPublicKey),
+ name, strlen (name),
+ &version, sizeof (version),
+ NULL, 0));
+}
+
+
+/**
+ * Find an experiment based on issuer name and version
+ *
+ * @param issuer the issuer
+ * @param name experiment name
+ * @param version experiment version
+ * @return the experiment or NULL if not found
+ */
+struct Experiment *
+GED_experiments_find (const struct GNUNET_CRYPTO_EddsaPublicKey *issuer,
+ const char *name,
+ const struct GNUNET_TIME_Absolute version)
+{
+ struct GNUNET_HashCode hc;
+
+ get_experiment_key (issuer,
+ name,
+ version,
+ &hc);
+ return GNUNET_CONTAINER_multihashmap_get (experiments,
+ &hc);
+}
+
+
+struct GetCtx
+{
+ struct Node *n;
+
+ GNUNET_EXPERIMENTATION_experiments_get_cb get_cb;
+
+ struct GNUNET_CRYPTO_EddsaPublicKey *issuer;
+};
+
+
+static int
+get_it (void *cls,
+ const struct GNUNET_HashCode *key,
+ void *value)
+{
+ struct GetCtx *get_ctx = cls;
+ struct Experiment *e = value;
+
+ if (0 == memcmp (&e->issuer,
+ get_ctx->issuer,
+ sizeof (struct GNUNET_CRYPTO_EddsaPublicKey)))
+ get_ctx->get_cb (get_ctx->n, e);
+ return GNUNET_OK;
+}
+
+
+void
+GED_experiments_get (struct Node *n,
+ struct GNUNET_CRYPTO_EddsaPublicKey *issuer,
+ GNUNET_EXPERIMENTATION_experiments_get_cb get_cb)
+{
+ struct GetCtx get_ctx;
+
+ GNUNET_assert (NULL != n);
+ GNUNET_assert (NULL != experiments);
+ GNUNET_assert (NULL != get_cb);
+ get_ctx.n = n;
+ get_ctx.get_cb = get_cb;
+ get_ctx.issuer = issuer;
+ GNUNET_CONTAINER_multihashmap_iterate (experiments,
+ &get_it, &get_ctx);
+ get_cb (n, NULL); // FIXME: ugly, end is easily signalled as we return: synchronous API!
+}
+
+
+/**
+ * Add a new experiment
*/
int
-GNUNET_EXPERIMENTATION_experiments_start ()
+GNUNET_EXPERIMENTATION_experiments_add (struct Issuer *i,
+ const char *name,
+ const struct GNUNET_CRYPTO_EddsaPublicKey *issuer_id,
+ struct GNUNET_TIME_Absolute version,
+ char *description,
+ uint32_t required_capabilities,
+ struct GNUNET_TIME_Absolute start,
+ struct GNUNET_TIME_Relative frequency,
+ struct GNUNET_TIME_Relative duration,
+ struct GNUNET_TIME_Absolute stop)
+{
+ struct Experiment *e;
+ struct GNUNET_HashCode hc;
+
+ e = GNUNET_new (struct Experiment);
+ e->name = GNUNET_strdup (name);
+ e->issuer = *issuer_id;
+ e->version = version;
+ if (NULL != description)
+ e->description = GNUNET_strdup (description);
+ e->required_capabilities = required_capabilities;
+ e->start = start;
+ e->frequency = frequency;
+ e->duration = duration;
+ e->stop = stop;
+
+ /* verify experiment */
+ if (GNUNET_SYSERR == experiment_verify (i, e))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Experiment `%s': Experiment signature is invalid\n"),
+ name);
+ GNUNET_free (e);
+ GNUNET_free_non_null (e->name);
+ GNUNET_free_non_null (e->description);
+ return GNUNET_SYSERR;
+ }
+
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ _("Adding experiment `%s' running from `%s' to `%s' every %llu sec. for %llu sec. \n"),
+ e->name,
+ GNUNET_STRINGS_absolute_time_to_string (start),
+ GNUNET_STRINGS_absolute_time_to_string (stop),
+ (long long unsigned int) frequency.rel_value_us / 1000000LL,
+ (long long unsigned int) duration.rel_value_us / 1000000LL);
+ get_experiment_key (&e->issuer,
+ name,
+ version,
+ &hc);
+ GNUNET_CONTAINER_multihashmap_put (experiments,
+ &hc,
+ e,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
+ GNUNET_STATISTICS_set (GED_stats,
+ "# experiments",
+ GNUNET_CONTAINER_multihashmap_size (experiments), GNUNET_NO);
+
+ return GNUNET_OK;
+}
+
+
+/**
+ * Parse a configuration section containing experiments
+ *
+ * @param cls configuration handle
+ * @param name section name
+ */
+static void
+exp_file_iterator (void *cls,
+ const char *name)
{
- char *issuers;
- char *pos;
- struct GNUNET_PeerIdentity issuer_ID;
+ struct GNUNET_CONFIGURATION_Handle *exp = cls;
+ struct Issuer *i;
+ char *val;
+ unsigned long long number;
+ /* Experiment values */
+ struct GNUNET_CRYPTO_EddsaPublicKey issuer;
+ struct GNUNET_TIME_Absolute version;
+ char *description;
+ uint32_t required_capabilities;
+ struct GNUNET_TIME_Absolute start ;
+ struct GNUNET_TIME_Absolute stop;
+ struct GNUNET_TIME_Relative frequency;
+ struct GNUNET_TIME_Relative duration;
+ struct GNUNET_HashCode phash;
- /* Load valid issuer */
- if (GNUNET_SYSERR == GNUNET_CONFIGURATION_get_value_string (GSE_cfg, "EXPERIMENTATION", "ISSUERS", &issuers))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("No valid experiment issuers configured! Set value to peer id of issuer! Exit...\n"));
- return GNUNET_SYSERR;
- }
+ /* Mandatory fields */
- issuer = GNUNET_CONTAINER_multihashmap_create (10, GNUNET_NO);
+ /* Issuer */
+ if (GNUNET_SYSERR == GNUNET_CONFIGURATION_get_value_string (exp, name, "ISSUER", &val))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Experiment `%s': Issuer missing\n"), name);
+ return;
+ }
+ if (GNUNET_SYSERR ==
+ GNUNET_CRYPTO_eddsa_public_key_from_string (val,
+ strlen (val),
+ &issuer))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Experiment `%s': Issuer invalid\n"), name);
+ GNUNET_free (val);
+ return;
+ }
+ GNUNET_CRYPTO_hash (&issuer, sizeof (issuer), &phash);
+ if (NULL == (i = GNUNET_CONTAINER_multihashmap_get (valid_issuers, &phash)))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Experiment `%s': Issuer not accepted!\n"), name);
+ GNUNET_free (val);
+ return;
+ }
+ GNUNET_free (val);
- for (pos = strtok (issuers, " "); pos != NULL; pos = strtok (NULL, " "))
+ /* Version */
+ if (GNUNET_SYSERR == GNUNET_CONFIGURATION_get_value_number (exp, name, "VERSION", &number))
{
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Experiment `%s': Version missing or invalid \n"), name);
+ return;
+ }
+ version.abs_value_us = number; // FIXME: what is this supposed to be? Version != TIME!???
- if (GNUNET_SYSERR == GNUNET_CRYPTO_hash_from_string (pos, &issuer_ID.hashPubKey))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Invalid value `%s'\n"), pos);
- }
- else
- {
- GNUNET_log (GNUNET_ERROR_TYPE_INFO, "`%s' is a valid issuer \n", GNUNET_i2s (&issuer_ID));
- GNUNET_CONTAINER_multihashmap_put (issuer, &issuer_ID.hashPubKey,
- NULL, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
- }
+ /* Required capabilities */
+ if (GNUNET_SYSERR == GNUNET_CONFIGURATION_get_value_number (exp, name, "CAPABILITIES", &number))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Experiment `%s': Required capabilities missing \n"), name);
+ return;
}
- GNUNET_free (issuers);
+ if (number > UINT32_MAX)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Experiment `%s': Required capabilities invalid \n"), name);
+ return;
+ }
+ required_capabilities = number;
+
+ /* Optional fields */
+
+ /* Description */
+ if (GNUNET_SYSERR == GNUNET_CONFIGURATION_get_value_string (exp, name, "DESCRIPTION", &description))
+ description = NULL;
+
+ if (GNUNET_SYSERR == GNUNET_CONFIGURATION_get_value_number (exp, name, "START", (long long unsigned int *) &start.abs_value_us))
+ start = GNUNET_TIME_UNIT_ZERO_ABS;
+
+ if (GNUNET_SYSERR == GNUNET_CONFIGURATION_get_value_time (exp, name, "FREQUENCY", &frequency))
+ frequency = EXP_DEFAULT_EXP_FREQ;
+ if (GNUNET_SYSERR == GNUNET_CONFIGURATION_get_value_time (exp, name, "DURATION", &duration))
+ duration = EXP_DEFAULT_EXP_DUR;
+ if (GNUNET_SYSERR == GNUNET_CONFIGURATION_get_value_number (exp, name, "STOP", (long long unsigned int *)&stop.abs_value_us))
+ stop = GNUNET_TIME_UNIT_FOREVER_ABS;
+
+ GNUNET_EXPERIMENTATION_experiments_add (i, name, &issuer, version,
+ description, required_capabilities,
+ start, frequency, duration, stop);
+ GNUNET_free_non_null (description);
+}
+
+
+/**
+ * Load experiments from file
+ *
+ * @param file source file
+ */
+static void
+load_file (const char * file)
+{
+ struct GNUNET_CONFIGURATION_Handle *exp = GNUNET_CONFIGURATION_create();
+
+ if (NULL == exp)
+ return;
+
+ if (GNUNET_SYSERR == GNUNET_CONFIGURATION_parse (exp, file))
+ {
+ GNUNET_CONFIGURATION_destroy (exp);
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Failed to parse file `%s'\n"),
+ file);
+ return;
+ }
+ GNUNET_CONFIGURATION_iterate_sections (exp, &exp_file_iterator, exp);
+ GNUNET_CONFIGURATION_destroy (exp);
+}
+
+
+/**
+ * Start experiments management
+ */
+int
+GED_experiments_start ()
+{
+ struct Issuer *i;
+ char *issuers;
+ char *file;
+ char *pos;
+ struct GNUNET_CRYPTO_EddsaPublicKey issuer_ID;
+ struct GNUNET_HashCode hash;
- if (0 == GNUNET_CONTAINER_multihashmap_size (issuer))
+ /* Load valid issuer */
+ if (GNUNET_SYSERR ==
+ GNUNET_CONFIGURATION_get_value_string (GED_cfg,
+ "EXPERIMENTATION",
+ "ISSUERS",
+ &issuers))
{
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("No valid experiment issuers configured! Set value to peer id of issuer! Exit...\n"));
- GNUNET_EXPERIMENTATION_experiments_stop ();
- return GNUNET_SYSERR;
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("No valid experiment issuers configured! Set value to public keys of issuers! Exiting.\n"));
+ GED_experiments_stop ();
+ return GNUNET_SYSERR;
}
- GNUNET_STATISTICS_set (GSE_stats, "# issuer", GNUNET_CONTAINER_multihashmap_size (issuer), GNUNET_NO);
- return GNUNET_OK;
+ valid_issuers = GNUNET_CONTAINER_multihashmap_create (10, GNUNET_NO);
+ for (pos = strtok (issuers, " "); pos != NULL; pos = strtok (NULL, " "))
+ {
+ if (GNUNET_SYSERR == GNUNET_CRYPTO_eddsa_public_key_from_string (pos,
+ strlen (pos),
+ &issuer_ID))
+ {
+ GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR,
+ "EXPERIMENTATION",
+ "ISSUERS",
+ _("Invalid value for public key\n"));
+ GED_experiments_stop ();
+ GNUNET_free (issuers);
+ return GNUNET_SYSERR;
+ }
+ i = GNUNET_new (struct Issuer);
+ i->pubkey = issuer_ID;
+ GNUNET_CRYPTO_hash( &issuer_ID, sizeof (issuer_ID), &hash);
+ GNUNET_CONTAINER_multihashmap_put (valid_issuers,
+ &hash,
+ i,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
+ }
+ GNUNET_free (issuers);
+ if (0 == GNUNET_CONTAINER_multihashmap_size (valid_issuers))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("No valid experiment issuers configured! Set value to public keys of issuers! Exiting.\n"));
+ GED_experiments_stop ();
+ return GNUNET_SYSERR;
+ }
+ GNUNET_STATISTICS_set (GED_stats,
+ "# issuer",
+ GNUNET_CONTAINER_multihashmap_size (valid_issuers),
+ GNUNET_NO);
+
+ experiments = GNUNET_CONTAINER_multihashmap_create (10, GNUNET_NO);
+ /* Load experiments from file */
+ if (GNUNET_SYSERR ==
+ GNUNET_CONFIGURATION_get_value_string (GED_cfg,
+ "EXPERIMENTATION",
+ "EXPERIMENTS",
+ &file))
+ return GNUNET_OK;
+
+ if (GNUNET_YES != GNUNET_DISK_file_test (file))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Cannot read experiments file `%s'\n"), file);
+ GNUNET_free (file);
+ return GNUNET_OK;
+ }
+ load_file (file);
+ GNUNET_free (file);
+ return GNUNET_OK;
}
+
/**
* Stop experiments management
*/
void
-GNUNET_EXPERIMENTATION_experiments_stop ()
+GED_experiments_stop ()
{
- if (NULL != issuer)
- GNUNET_CONTAINER_multihashmap_destroy (issuer);
- issuer = NULL;
+ if (NULL != valid_issuers)
+ {
+ GNUNET_CONTAINER_multihashmap_iterate (valid_issuers, &free_issuer, NULL);
+ GNUNET_CONTAINER_multihashmap_destroy (valid_issuers);
+ }
+ valid_issuers = NULL;
+ if (NULL != experiments)
+ {
+ GNUNET_CONTAINER_multihashmap_iterate (experiments, &free_experiment, NULL);
+ GNUNET_CONTAINER_multihashmap_destroy (experiments);
+ }
+ experiments = NULL;
}
/* end of gnunet-daemon-experimentation_experiments.c */
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