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authorSchanzenbach, Martin <mschanzenbach@posteo.de>2019-03-12 09:36:17 +0100
committerSchanzenbach, Martin <mschanzenbach@posteo.de>2019-03-12 09:36:17 +0100
commit919bb8c92fa1b7cda53401ff2286b980ca0b12d8 (patch)
treeb0ab4ebf063c0ccb2a4b8095463d1e7a6884bf2e /src/reclaim
parent76c6ccfdfe09891db424ead5209f041f0e71dc63 (diff)
move reclaim and gns back into subdirs
Diffstat (limited to 'src/reclaim')
-rw-r--r--src/reclaim/Makefile.am44
-rw-r--r--src/reclaim/json_reclaim.c242
-rw-r--r--src/reclaim/json_reclaim.h48
-rw-r--r--src/reclaim/oidc_helper.c436
-rw-r--r--src/reclaim/oidc_helper.h111
-rw-r--r--src/reclaim/plugin_rest_openid_connect.c2330
-rw-r--r--src/reclaim/plugin_rest_reclaim.c1104
7 files changed, 4314 insertions, 1 deletions
diff --git a/src/reclaim/Makefile.am b/src/reclaim/Makefile.am
index f9942fa23..fd488e1b9 100644
--- a/src/reclaim/Makefile.am
+++ b/src/reclaim/Makefile.am
@@ -16,6 +16,12 @@ if HAVE_SQLITE
SQLITE_PLUGIN = libgnunet_plugin_reclaim_sqlite.la
endif
+if HAVE_JSON
+REST_PLUGIN = \
+ libgnunet_plugin_rest_openid_connect.la \
+ libgnunet_plugin_rest_reclaim.la
+endif
+
EXTRA_DIST = \
reclaim.conf \
test_reclaim_defaults.conf \
@@ -33,7 +39,8 @@ lib_LTLIBRARIES = \
libgnunetreclaim.la
plugin_LTLIBRARIES = \
libgnunet_plugin_gnsrecord_reclaim.la \
- $(SQLITE_PLUGIN)
+ $(SQLITE_PLUGIN) \
+ $(REST_PLUGIN)
bin_PROGRAMS = \
gnunet-reclaim
@@ -41,6 +48,41 @@ bin_PROGRAMS = \
libexec_PROGRAMS = \
gnunet-service-reclaim
+libgnunet_plugin_rest_reclaim_la_SOURCES = \
+ plugin_rest_reclaim.c \
+ json_reclaim.h \
+ json_reclaim.c
+libgnunet_plugin_rest_reclaim_la_LIBADD = \
+ $(top_builddir)/src/identity/libgnunetidentity.la \
+ libgnunetreclaim.la \
+ $(top_builddir)/src/json/libgnunetjson.la \
+ $(top_builddir)/src/rest/libgnunetrest.la \
+ $(top_builddir)/src/reclaim-attribute/libgnunetreclaimattribute.la \
+ $(top_builddir)/src/namestore/libgnunetnamestore.la \
+ $(top_builddir)/src/util/libgnunetutil.la $(XLIBS) \
+ $(LTLIBINTL) -ljansson -lmicrohttpd
+libgnunet_plugin_rest_reclaim_la_LDFLAGS = \
+ $(GN_PLUGIN_LDFLAGS)
+
+
+libgnunet_plugin_rest_openid_connect_la_SOURCES = \
+ plugin_rest_openid_connect.c \
+ oidc_helper.h \
+ oidc_helper.c
+libgnunet_plugin_rest_openid_connect_la_LIBADD = \
+ $(top_builddir)/src/identity/libgnunetidentity.la \
+ libgnunetreclaim.la \
+ $(top_builddir)/src/rest/libgnunetrest.la \
+ $(top_builddir)/src/reclaim-attribute/libgnunetreclaimattribute.la \
+ $(top_builddir)/src/namestore/libgnunetnamestore.la \
+$(top_builddir)/src/gns/libgnunetgns.la \
+ $(top_builddir)/src/gnsrecord/libgnunetgnsrecord.la \
+ $(top_builddir)/src/util/libgnunetutil.la $(XLIBS) \
+ $(LTLIBINTL) -ljansson -lmicrohttpd
+libgnunet_plugin_rest_openid_connect_la_LDFLAGS = \
+ $(GN_PLUGIN_LDFLAGS)
+
+
libgnunet_plugin_gnsrecord_reclaim_la_SOURCES = \
plugin_gnsrecord_reclaim.c
libgnunet_plugin_gnsrecord_reclaim_la_LIBADD = \
diff --git a/src/reclaim/json_reclaim.c b/src/reclaim/json_reclaim.c
new file mode 100644
index 000000000..0fe9150d9
--- /dev/null
+++ b/src/reclaim/json_reclaim.c
@@ -0,0 +1,242 @@
+/*
+ This file is part of GNUnet.
+ Copyright (C) 2009-2018 GNUnet e.V.
+
+ GNUnet is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Affero General Public License as published
+ by the Free Software Foundation, either version 3 of the License,
+ or (at your option) any later version.
+
+ GNUnet 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
+ Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+ SPDX-License-Identifier: AGPL3.0-or-later
+*/
+
+/**
+ * @file rest-plugins/json_reclaim.c
+ * @brief JSON handling of reclaim data
+ * @author Martin Schanzenbach
+ */
+#include "platform.h"
+#include "gnunet_util_lib.h"
+#include "gnunet_json_lib.h"
+#include "gnunet_reclaim_service.h"
+#include "gnunet_reclaim_attribute_lib.h"
+
+/**
+ * Parse given JSON object to a claim
+ *
+ * @param cls closure, NULL
+ * @param root the json object representing data
+ * @param spec where to write the data
+ * @return #GNUNET_OK upon successful parsing; #GNUNET_SYSERR upon error
+ */
+static int
+parse_attr (void *cls,
+ json_t *root,
+ struct GNUNET_JSON_Specification *spec)
+{
+ struct GNUNET_RECLAIM_ATTRIBUTE_Claim *attr;
+ const char* name_str;
+ const char* val_str;
+ const char* type_str;
+ char *data;
+ int unpack_state;
+ uint32_t type;
+ size_t data_size;
+
+ GNUNET_assert(NULL != root);
+
+ if(!json_is_object(root))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Error json is not array nor object!\n");
+ return GNUNET_SYSERR;
+ }
+ //interpret single attribute
+ unpack_state = json_unpack(root,
+ "{s:s, s:s, s:s!}",
+ "name", &name_str,
+ "type", &type_str,
+ "value", &val_str);
+ if (0 != unpack_state)
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "Error json object has a wrong format!\n");
+ return GNUNET_SYSERR;
+ }
+ type = GNUNET_RECLAIM_ATTRIBUTE_typename_to_number (type_str);
+ if (GNUNET_SYSERR == (GNUNET_RECLAIM_ATTRIBUTE_string_to_value (type,
+ val_str,
+ (void**)&data,
+ &data_size)))
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "Attribute value invalid!\n");
+ return GNUNET_SYSERR;
+ }
+ attr = GNUNET_RECLAIM_ATTRIBUTE_claim_new (name_str,
+ type,
+ data,
+ data_size);
+ *(struct GNUNET_RECLAIM_ATTRIBUTE_Claim **) spec->ptr = attr;
+ return GNUNET_OK;
+}
+
+/**
+ * Cleanup data left from parsing RSA public key.
+ *
+ * @param cls closure, NULL
+ * @param[out] spec where to free the data
+ */
+static void
+clean_attr (void *cls, struct GNUNET_JSON_Specification *spec)
+{
+ struct GNUNET_RECLAIM_ATTRIBUTE_Claim **attr;
+ attr = (struct GNUNET_RECLAIM_ATTRIBUTE_Claim **) spec->ptr;
+ if (NULL != *attr)
+ {
+ GNUNET_free(*attr);
+ *attr = NULL;
+ }
+}
+
+/**
+ * JSON Specification for Reclaim claims.
+ *
+ * @param ticket struct of GNUNET_RECLAIM_ATTRIBUTE_Claim to fill
+ * @return JSON Specification
+ */
+struct GNUNET_JSON_Specification
+GNUNET_RECLAIM_JSON_spec_claim (struct GNUNET_RECLAIM_ATTRIBUTE_Claim **attr)
+{
+ struct GNUNET_JSON_Specification ret = {
+ .parser = &parse_attr,
+ .cleaner = &clean_attr,
+ .cls = NULL,
+ .field = NULL,
+ .ptr = attr,
+ .ptr_size = 0,
+ .size_ptr = NULL
+ };
+ *attr = NULL;
+ return ret;
+}
+/**
+ * Parse given JSON object to a ticket
+ *
+ * @param cls closure, NULL
+ * @param root the json object representing data
+ * @param spec where to write the data
+ * @return #GNUNET_OK upon successful parsing; #GNUNET_SYSERR upon error
+ */
+static int
+parse_ticket (void *cls,
+ json_t *root,
+ struct GNUNET_JSON_Specification *spec)
+{
+ struct GNUNET_RECLAIM_Ticket *ticket;
+ const char* rnd_str;
+ const char* aud_str;
+ const char* id_str;
+ int unpack_state;
+
+ GNUNET_assert(NULL != root);
+
+ if(!json_is_object(root))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Error json is not array nor object!\n");
+ return GNUNET_SYSERR;
+ }
+ //interpret single ticket
+ unpack_state = json_unpack(root,
+ "{s:s, s:s, s:s!}",
+ "rnd", &rnd_str,
+ "audience", &aud_str,
+ "identity", &id_str);
+ if (0 != unpack_state)
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "Error json object has a wrong format!\n");
+ return GNUNET_SYSERR;
+ }
+ ticket = GNUNET_new (struct GNUNET_RECLAIM_Ticket);
+ if (GNUNET_OK != GNUNET_STRINGS_string_to_data (rnd_str,
+ strlen (rnd_str),
+ &ticket->rnd,
+ sizeof (uint64_t)))
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,"Rnd invalid\n");
+ GNUNET_free(ticket);
+ return GNUNET_SYSERR;
+ }
+ GNUNET_STRINGS_string_to_data (id_str,
+ strlen (id_str),
+ &ticket->identity,
+ sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey));
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,"Identity invalid\n");
+ GNUNET_free(ticket);
+ return GNUNET_SYSERR;
+ }
+
+ GNUNET_STRINGS_string_to_data (aud_str,
+ strlen (aud_str),
+ &ticket->audience,
+ sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey));
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,"Audience invalid\n");
+ GNUNET_free(ticket);
+ return GNUNET_SYSERR;
+ }
+
+ *(struct GNUNET_RECLAIM_Ticket **) spec->ptr = ticket;
+ return GNUNET_OK;
+}
+
+/**
+ * Cleanup data left from parsing RSA public key.
+ *
+ * @param cls closure, NULL
+ * @param[out] spec where to free the data
+ */
+static void
+clean_ticket (void *cls, struct GNUNET_JSON_Specification *spec)
+{
+ struct GNUNET_RECLAIM_Ticket **ticket;
+ ticket = (struct GNUNET_RECLAIM_Ticket **) spec->ptr;
+ if (NULL != *ticket)
+ {
+ GNUNET_free(*ticket);
+ *ticket = NULL;
+ }
+}
+
+/**
+ * JSON Specification for Reclaim tickets.
+ *
+ * @param ticket struct of GNUNET_RECLAIM_Ticket to fill
+ * @return JSON Specification
+ */
+struct GNUNET_JSON_Specification
+GNUNET_RECLAIM_JSON_spec_ticket (struct GNUNET_RECLAIM_Ticket **ticket)
+{
+ struct GNUNET_JSON_Specification ret = {
+ .parser = &parse_ticket,
+ .cleaner = &clean_ticket,
+ .cls = NULL,
+ .field = NULL,
+ .ptr = ticket,
+ .ptr_size = 0,
+ .size_ptr = NULL
+ };
+ *ticket = NULL;
+ return ret;
+}
diff --git a/src/reclaim/json_reclaim.h b/src/reclaim/json_reclaim.h
new file mode 100644
index 000000000..ced2e10dd
--- /dev/null
+++ b/src/reclaim/json_reclaim.h
@@ -0,0 +1,48 @@
+/*
+ This file is part of GNUnet.
+ Copyright (C) 2009-2018 GNUnet e.V.
+
+ GNUnet is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Affero General Public License as published
+ by the Free Software Foundation, either version 3 of the License,
+ or (at your option) any later version.
+
+ GNUnet 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
+ Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+ SPDX-License-Identifier: AGPL3.0-or-later
+*/
+
+/**
+ * @file rest-plugins/json_reclaim.h
+ * @brief JSON handling of reclaim data
+ * @author Martin Schanzenbach
+ */
+#include "platform.h"
+#include "gnunet_util_lib.h"
+#include "gnunet_json_lib.h"
+#include "gnunet_reclaim_service.h"
+#include "gnunet_reclaim_attribute_lib.h"
+
+/**
+ * JSON Specification for Reclaim claims.
+ *
+ * @param ticket struct of GNUNET_RECLAIM_ATTRIBUTE_Claim to fill
+ * @return JSON Specification
+ */
+struct GNUNET_JSON_Specification
+GNUNET_RECLAIM_JSON_spec_claim (struct GNUNET_RECLAIM_ATTRIBUTE_Claim **attr);
+
+/**
+ * JSON Specification for Reclaim tickets.
+ *
+ * @param ticket struct of GNUNET_RECLAIM_Ticket to fill
+ * @return JSON Specification
+ */
+struct GNUNET_JSON_Specification
+GNUNET_RECLAIM_JSON_spec_ticket (struct GNUNET_RECLAIM_Ticket **ticket);
diff --git a/src/reclaim/oidc_helper.c b/src/reclaim/oidc_helper.c
new file mode 100644
index 000000000..646e58551
--- /dev/null
+++ b/src/reclaim/oidc_helper.c
@@ -0,0 +1,436 @@
+/*
+ This file is part of GNUnet
+ Copyright (C) 2010-2015 GNUnet e.V.
+
+ GNUnet is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Affero General Public License as published
+ by the Free Software Foundation, either version 3 of the License,
+ or (at your option) any later version.
+
+ GNUnet 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
+ Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+ SPDX-License-Identifier: AGPL3.0-or-later
+ */
+
+/**
+ * @file reclaim/oidc_helper.c
+ * @brief helper library for OIDC related functions
+ * @author Martin Schanzenbach
+ */
+#include "platform.h"
+#include "gnunet_util_lib.h"
+#include "gnunet_signatures.h"
+#include "gnunet_reclaim_service.h"
+#include "gnunet_reclaim_attribute_lib.h"
+#include <jansson.h>
+#include <inttypes.h>
+#include "oidc_helper.h"
+
+static char*
+create_jwt_header(void)
+{
+ json_t *root;
+ char *json_str;
+
+ root = json_object ();
+ json_object_set_new (root, JWT_ALG, json_string (JWT_ALG_VALUE));
+ json_object_set_new (root, JWT_TYP, json_string (JWT_TYP_VALUE));
+
+ json_str = json_dumps (root, JSON_INDENT(0) | JSON_COMPACT);
+ json_decref (root);
+ return json_str;
+}
+
+static void
+replace_char(char* str, char find, char replace){
+ char *current_pos = strchr(str,find);
+ while (current_pos){
+ *current_pos = replace;
+ current_pos = strchr(current_pos,find);
+ }
+}
+
+//RFC4648
+static void
+fix_base64(char* str) {
+ //Replace + with -
+ replace_char (str, '+', '-');
+
+ //Replace / with _
+ replace_char (str, '/', '_');
+
+}
+
+/**
+ * Create a JWT from attributes
+ *
+ * @param aud_key the public of the audience
+ * @param sub_key the public key of the subject
+ * @param attrs the attribute list
+ * @param expiration_time the validity of the token
+ * @param secret_key the key used to sign the JWT
+ * @return a new base64-encoded JWT string.
+ */
+char*
+OIDC_id_token_new (const struct GNUNET_CRYPTO_EcdsaPublicKey *aud_key,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *sub_key,
+ const struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList *attrs,
+ const struct GNUNET_TIME_Relative *expiration_time,
+ const char *nonce,
+ const char *secret_key)
+{
+ struct GNUNET_RECLAIM_ATTRIBUTE_ClaimListEntry *le;
+ struct GNUNET_HashCode signature;
+ struct GNUNET_TIME_Absolute exp_time;
+ struct GNUNET_TIME_Absolute time_now;
+ char* audience;
+ char* subject;
+ char* header;
+ char* body_str;
+ char* result;
+ char* header_base64;
+ char* body_base64;
+ char* signature_target;
+ char* signature_base64;
+ char* attr_val_str;
+ json_t* body;
+
+ //iat REQUIRED time now
+ time_now = GNUNET_TIME_absolute_get();
+ //exp REQUIRED time expired from config
+ exp_time = GNUNET_TIME_absolute_add (time_now, *expiration_time);
+ //auth_time only if max_age
+ //nonce only if nonce
+ // OPTIONAL acr,amr,azp
+ subject = GNUNET_STRINGS_data_to_string_alloc (sub_key,
+ sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey));
+ audience = GNUNET_STRINGS_data_to_string_alloc (aud_key,
+ sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey));
+ header = create_jwt_header ();
+ body = json_object ();
+
+ //iss REQUIRED case sensitive server uri with https
+ //The issuer is the local reclaim instance (e.g. https://reclaim.id/api/openid)
+ json_object_set_new (body,
+ "iss", json_string (SERVER_ADDRESS));
+ //sub REQUIRED public key identity, not exceed 255 ASCII length
+ json_object_set_new (body,
+ "sub", json_string (subject));
+ //aud REQUIRED public key client_id must be there
+ json_object_set_new (body,
+ "aud", json_string (audience));
+ //iat
+ json_object_set_new (body,
+ "iat", json_integer (time_now.abs_value_us / (1000*1000)));
+ //exp
+ json_object_set_new (body,
+ "exp", json_integer (exp_time.abs_value_us / (1000*1000)));
+ //nbf
+ json_object_set_new (body,
+ "nbf", json_integer (time_now.abs_value_us / (1000*1000)));
+ //nonce
+ if (NULL != nonce)
+ json_object_set_new (body,
+ "nonce", json_string (nonce));
+
+ for (le = attrs->list_head; NULL != le; le = le->next)
+ {
+ attr_val_str = GNUNET_RECLAIM_ATTRIBUTE_value_to_string (le->claim->type,
+ le->claim->data,
+ le->claim->data_size);
+ json_object_set_new (body,
+ le->claim->name,
+ json_string (attr_val_str));
+ GNUNET_free (attr_val_str);
+ }
+ body_str = json_dumps (body, JSON_INDENT(0) | JSON_COMPACT);
+ json_decref (body);
+
+ GNUNET_STRINGS_base64_encode (header,
+ strlen (header),
+ &header_base64);
+ fix_base64(header_base64);
+
+ GNUNET_STRINGS_base64_encode (body_str,
+ strlen (body_str),
+ &body_base64);
+ fix_base64(body_base64);
+
+ GNUNET_free (subject);
+ GNUNET_free (audience);
+
+ /**
+ * Creating the JWT signature. This might not be
+ * standards compliant, check.
+ */
+ GNUNET_asprintf (&signature_target, "%s.%s", header_base64, body_base64);
+ GNUNET_CRYPTO_hmac_raw (secret_key, strlen (secret_key), signature_target, strlen (signature_target), &signature);
+ GNUNET_STRINGS_base64_encode ((const char*)&signature,
+ sizeof (struct GNUNET_HashCode),
+ &signature_base64);
+ fix_base64(signature_base64);
+
+ GNUNET_asprintf (&result, "%s.%s.%s",
+ header_base64, body_base64, signature_base64);
+
+ GNUNET_free (signature_target);
+ GNUNET_free (header);
+ GNUNET_free (body_str);
+ GNUNET_free (signature_base64);
+ GNUNET_free (body_base64);
+ GNUNET_free (header_base64);
+ return result;
+}
+/**
+ * Builds an OIDC authorization code including
+ * a reclaim ticket and nonce
+ *
+ * @param issuer the issuer of the ticket, used to sign the ticket and nonce
+ * @param ticket the ticket to include in the code
+ * @param nonce the nonce to include in the code
+ * @return a new authorization code (caller must free)
+ */
+char*
+OIDC_build_authz_code (const struct GNUNET_CRYPTO_EcdsaPrivateKey *issuer,
+ const struct GNUNET_RECLAIM_Ticket *ticket,
+ const char* nonce)
+{
+ char *ticket_str;
+ json_t *code_json;
+ char *signature_payload;
+ char *signature_str;
+ char *authz_code;
+ size_t signature_payload_len;
+ struct GNUNET_CRYPTO_EcdsaSignature signature;
+ struct GNUNET_CRYPTO_EccSignaturePurpose *purpose;
+
+ signature_payload_len = sizeof (struct GNUNET_RECLAIM_Ticket);
+ if (NULL != nonce)
+ signature_payload_len += strlen (nonce);
+
+ signature_payload = GNUNET_malloc (sizeof (struct GNUNET_CRYPTO_EccSignaturePurpose) + signature_payload_len);
+ purpose = (struct GNUNET_CRYPTO_EccSignaturePurpose *)signature_payload;
+ purpose->size = htonl (sizeof (struct GNUNET_CRYPTO_EccSignaturePurpose) + signature_payload_len);
+ purpose->purpose = htonl (GNUNET_SIGNATURE_PURPOSE_RECLAIM_CODE_SIGN);
+ memcpy (&purpose[1],
+ ticket,
+ sizeof (struct GNUNET_RECLAIM_Ticket));
+ if (NULL != nonce)
+ memcpy (((char*)&purpose[1]) + sizeof (struct GNUNET_RECLAIM_Ticket),
+ nonce,
+ strlen (nonce));
+ if (GNUNET_SYSERR == GNUNET_CRYPTO_ecdsa_sign (issuer,
+ purpose,
+ &signature))
+ {
+ GNUNET_free (signature_payload);
+ return NULL;
+ }
+ signature_str = GNUNET_STRINGS_data_to_string_alloc (&signature,
+ sizeof (signature));
+ ticket_str = GNUNET_STRINGS_data_to_string_alloc (ticket,
+ sizeof (struct GNUNET_RECLAIM_Ticket));
+
+ code_json = json_object ();
+ json_object_set_new (code_json,
+ "ticket",
+ json_string (ticket_str));
+ if (NULL != nonce)
+ json_object_set_new (code_json,
+ "nonce",
+ json_string (nonce));
+ json_object_set_new (code_json,
+ "signature",
+ json_string (signature_str));
+ authz_code = json_dumps (code_json,
+ JSON_INDENT(0) | JSON_COMPACT);
+ GNUNET_free (signature_payload);
+ GNUNET_free (signature_str);
+ GNUNET_free (ticket_str);
+ json_decref (code_json);
+ return authz_code;
+}
+
+
+
+
+/**
+ * Parse reclaim ticket and nonce from
+ * authorization code.
+ * This also verifies the signature in the code.
+ *
+ * @param audience the expected audience of the code
+ * @param code the string representation of the code
+ * @param ticket where to store the ticket
+ * @param nonce where to store the nonce
+ * @return GNUNET_OK if successful, else GNUNET_SYSERR
+ */
+int
+OIDC_parse_authz_code (const struct GNUNET_CRYPTO_EcdsaPublicKey *audience,
+ const char* code,
+ struct GNUNET_RECLAIM_Ticket **ticket,
+ char **nonce)
+{
+ json_error_t error;
+ json_t *code_json;
+ json_t *ticket_json;
+ json_t *nonce_json;
+ json_t *signature_json;
+ const char *ticket_str;
+ const char *signature_str;
+ const char *nonce_str;
+ char *code_output;
+ struct GNUNET_CRYPTO_EccSignaturePurpose *purpose;
+ struct GNUNET_CRYPTO_EcdsaSignature signature;
+ size_t signature_payload_len;
+
+ code_output = NULL;
+ GNUNET_STRINGS_base64_decode (code,
+ strlen(code),
+ (void**)&code_output);
+ code_json = json_loads (code_output, 0 , &error);
+ GNUNET_free (code_output);
+ ticket_json = json_object_get (code_json, "ticket");
+ nonce_json = json_object_get (code_json, "nonce");
+ signature_json = json_object_get (code_json, "signature");
+ *ticket = NULL;
+ *nonce = NULL;
+
+ if ((NULL == ticket_json || !json_is_string (ticket_json)) ||
+ (NULL == signature_json || !json_is_string (signature_json)))
+ {
+ json_decref (code_json);
+ return GNUNET_SYSERR;
+ }
+ ticket_str = json_string_value (ticket_json);
+ signature_str = json_string_value (signature_json);
+ nonce_str = NULL;
+ if (NULL != nonce_json)
+ nonce_str = json_string_value (nonce_json);
+ signature_payload_len = sizeof (struct GNUNET_RECLAIM_Ticket);
+ if (NULL != nonce_str)
+ signature_payload_len += strlen (nonce_str);
+ purpose = GNUNET_malloc (sizeof (struct GNUNET_CRYPTO_EccSignaturePurpose) +
+ signature_payload_len);
+ purpose->size = htonl (sizeof (struct GNUNET_CRYPTO_EccSignaturePurpose) + signature_payload_len);
+ purpose->purpose = htonl (GNUNET_SIGNATURE_PURPOSE_RECLAIM_CODE_SIGN);
+ if (GNUNET_OK != GNUNET_STRINGS_string_to_data (ticket_str,
+ strlen (ticket_str),
+ &purpose[1],
+ sizeof (struct GNUNET_RECLAIM_Ticket)))
+ {
+ GNUNET_free (purpose);
+ json_decref (code_json);
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Cannot parse ticket!\n");
+ return GNUNET_SYSERR;
+ }
+ if (GNUNET_OK != GNUNET_STRINGS_string_to_data (signature_str,
+ strlen (signature_str),
+ &signature,
+ sizeof (struct GNUNET_CRYPTO_EcdsaSignature)))
+ {
+ GNUNET_free (purpose);
+ json_decref (code_json);
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Cannot parse signature!\n");
+ return GNUNET_SYSERR;
+ }
+ *ticket = GNUNET_new (struct GNUNET_RECLAIM_Ticket);
+ memcpy (*ticket,
+ &purpose[1],
+ sizeof (struct GNUNET_RECLAIM_Ticket));
+ if (0 != memcmp (audience,
+ &(*ticket)->audience,
+ sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey)))
+ {
+ GNUNET_free (purpose);
+ GNUNET_free (*ticket);
+ json_decref (code_json);
+ *ticket = NULL;
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Audience in ticket does not match client!\n");
+ return GNUNET_SYSERR;
+
+ }
+ if (NULL != nonce_str)
+ memcpy (((char*)&purpose[1]) + sizeof (struct GNUNET_RECLAIM_Ticket),
+ nonce_str,
+ strlen (nonce_str));
+ if (GNUNET_OK != GNUNET_CRYPTO_ecdsa_verify (GNUNET_SIGNATURE_PURPOSE_RECLAIM_CODE_SIGN,
+ purpose,
+ &signature,
+ &(*ticket)->identity))
+ {
+ GNUNET_free (purpose);
+ GNUNET_free (*ticket);
+ json_decref (code_json);
+ *ticket = NULL;
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Signature of authZ code invalid!\n");
+ return GNUNET_SYSERR;
+ }
+ *nonce = GNUNET_strdup (nonce_str);
+ return GNUNET_OK;
+}
+
+/**
+ * Build a token response for a token request
+ * TODO: Maybe we should add the scope here?
+ *
+ * @param access_token the access token to include
+ * @param id_token the id_token to include
+ * @param expiration_time the expiration time of the token(s)
+ * @param token_response where to store the response
+ */
+void
+OIDC_build_token_response (const char *access_token,
+ const char *id_token,
+ const struct GNUNET_TIME_Relative *expiration_time,
+ char **token_response)
+{
+ json_t *root_json;
+
+ root_json = json_object ();
+
+ GNUNET_assert (NULL != access_token);
+ GNUNET_assert (NULL != id_token);
+ GNUNET_assert (NULL != expiration_time);
+ json_object_set_new (root_json,
+ "access_token",
+ json_string (access_token));
+ json_object_set_new (root_json,
+ "token_type",
+ json_string ("Bearer"));
+ json_object_set_new (root_json,
+ "expires_in",
+ json_integer (expiration_time->rel_value_us / (1000 * 1000)));
+ json_object_set_new (root_json,
+ "id_token",
+ json_string (id_token));
+ *token_response = json_dumps (root_json,
+ JSON_INDENT(0) | JSON_COMPACT);
+ json_decref (root_json);
+}
+
+/**
+ * Generate a new access token
+ */
+char*
+OIDC_access_token_new ()
+{
+ char* access_token_number;
+ char* access_token;
+ uint64_t random_number;
+
+ random_number = GNUNET_CRYPTO_random_u64(GNUNET_CRYPTO_QUALITY_NONCE, UINT64_MAX);
+ GNUNET_asprintf (&access_token_number, "%" PRIu64, random_number);
+ GNUNET_STRINGS_base64_encode(access_token_number,strlen(access_token_number),&access_token);
+ return access_token;
+}
diff --git a/src/reclaim/oidc_helper.h b/src/reclaim/oidc_helper.h
new file mode 100644
index 000000000..d718b7a78
--- /dev/null
+++ b/src/reclaim/oidc_helper.h
@@ -0,0 +1,111 @@
+/*
+ This file is part of GNUnet
+ Copyright (C) 2010-2015 GNUnet e.V.
+
+ GNUnet is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Affero General Public License as published
+ by the Free Software Foundation, either version 3 of the License,
+ or (at your option) any later version.
+
+ GNUnet 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
+ Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+ SPDX-License-Identifier: AGPL3.0-or-later
+ */
+
+/**
+ * @file reclaim/oidc_helper.h
+ * @brief helper library for OIDC related functions
+ * @author Martin Schanzenbach
+ */
+
+#ifndef JWT_H
+#define JWT_H
+
+#define JWT_ALG "alg"
+
+/* Use 512bit HMAC */
+#define JWT_ALG_VALUE "HS512"
+
+#define JWT_TYP "typ"
+
+#define JWT_TYP_VALUE "jwt"
+
+#define SERVER_ADDRESS "https://api.reclaim"
+
+/**
+ * Create a JWT from attributes
+ *
+ * @param aud_key the public of the audience
+ * @param sub_key the public key of the subject
+ * @param attrs the attribute list
+ * @param expiration_time the validity of the token
+ * @param secret_key the key used to sign the JWT
+ * @return a new base64-encoded JWT string.
+ */
+char*
+OIDC_id_token_new (const struct GNUNET_CRYPTO_EcdsaPublicKey *aud_key,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *sub_key,
+ const struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList *attrs,
+ const struct GNUNET_TIME_Relative *expiration_time,
+ const char *nonce,
+ const char *secret_key);
+
+/**
+ * Builds an OIDC authorization code including
+ * a reclaim ticket and nonce
+ *
+ * @param issuer the issuer of the ticket, used to sign the ticket and nonce
+ * @param ticket the ticket to include in the code
+ * @param nonce the nonce to include in the code
+ * @return a new authorization code (caller must free)
+ */
+char*
+OIDC_build_authz_code (const struct GNUNET_CRYPTO_EcdsaPrivateKey *issuer,
+ const struct GNUNET_RECLAIM_Ticket *ticket,
+ const char* nonce);
+
+/**
+ * Parse reclaim ticket and nonce from
+ * authorization code.
+ * This also verifies the signature in the code.
+ *
+ * @param audience the expected audience of the code
+ * @param code the string representation of the code
+ * @param ticket where to store the ticket
+ * @param nonce where to store the nonce
+ * @return GNUNET_OK if successful, else GNUNET_SYSERR
+ */
+int
+OIDC_parse_authz_code (const struct GNUNET_CRYPTO_EcdsaPublicKey *audience,
+ const char* code,
+ struct GNUNET_RECLAIM_Ticket **ticket,
+ char **nonce);
+
+/**
+ * Build a token response for a token request
+ * TODO: Maybe we should add the scope here?
+ *
+ * @param access_token the access token to include
+ * @param id_token the id_token to include
+ * @param expiration_time the expiration time of the token(s)
+ * @param token_response where to store the response
+ */
+void
+OIDC_build_token_response (const char *access_token,
+ const char *id_token,
+ const struct GNUNET_TIME_Relative *expiration_time,
+ char **token_response);
+/**
+ * Generate a new access token
+ */
+char*
+OIDC_access_token_new ();
+
+
+#endif
diff --git a/src/reclaim/plugin_rest_openid_connect.c b/src/reclaim/plugin_rest_openid_connect.c
new file mode 100644
index 000000000..e755f079b
--- /dev/null
+++ b/src/reclaim/plugin_rest_openid_connect.c
@@ -0,0 +1,2330 @@
+/*
+ This file is part of GNUnet.
+ Copyright (C) 2012-2018 GNUnet e.V.
+
+ GNUnet is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Affero General Public License as published
+ by the Free Software Foundation, either version 3 of the License,
+ or (at your option) any later version.
+
+ GNUnet 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
+ Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+ SPDX-License-Identifier: AGPL3.0-or-later
+ */
+/**
+ * @author Martin Schanzenbach
+ * @author Philippe Buschmann
+ * @file identity/plugin_rest_openid_connect.c
+ * @brief GNUnet Namestore REST plugin
+ *
+ */
+
+#include "platform.h"
+#include "gnunet_rest_plugin.h"
+#include "gnunet_identity_service.h"
+#include "gnunet_gns_service.h"
+#include "gnunet_gnsrecord_lib.h"
+#include "gnunet_namestore_service.h"
+#include "gnunet_rest_lib.h"
+#include "microhttpd.h"
+#include <jansson.h>
+#include <inttypes.h>
+#include "gnunet_signatures.h"
+#include "gnunet_reclaim_attribute_lib.h"
+#include "gnunet_reclaim_service.h"
+#include "oidc_helper.h"
+
+/**
+ * REST root namespace
+ */
+#define GNUNET_REST_API_NS_OIDC "/openid"
+
+/**
+ * Authorize endpoint
+ */
+#define GNUNET_REST_API_NS_AUTHORIZE "/openid/authorize"
+
+/**
+ * Token endpoint
+ */
+#define GNUNET_REST_API_NS_TOKEN "/openid/token"
+
+/**
+ * UserInfo endpoint
+ */
+#define GNUNET_REST_API_NS_USERINFO "/openid/userinfo"
+
+/**
+ * Login namespace
+ */
+#define GNUNET_REST_API_NS_LOGIN "/openid/login"
+
+/**
+ * State while collecting all egos
+ */
+#define ID_REST_STATE_INIT 0
+
+/**
+ * Done collecting egos
+ */
+#define ID_REST_STATE_POST_INIT 1
+
+/**
+ * OIDC grant_type key
+ */
+#define OIDC_GRANT_TYPE_KEY "grant_type"
+
+/**
+ * OIDC grant_type key
+ */
+#define OIDC_GRANT_TYPE_VALUE "authorization_code"
+
+/**
+ * OIDC code key
+ */
+#define OIDC_CODE_KEY "code"
+
+/**
+ * OIDC response_type key
+ */
+#define OIDC_RESPONSE_TYPE_KEY "response_type"
+
+/**
+ * OIDC client_id key
+ */
+#define OIDC_CLIENT_ID_KEY "client_id"
+
+/**
+ * OIDC scope key
+ */
+#define OIDC_SCOPE_KEY "scope"
+
+/**
+ * OIDC redirect_uri key
+ */
+#define OIDC_REDIRECT_URI_KEY "redirect_uri"
+
+/**
+ * OIDC state key
+ */
+#define OIDC_STATE_KEY "state"
+
+/**
+ * OIDC nonce key
+ */
+#define OIDC_NONCE_KEY "nonce"
+
+/**
+ * OIDC cookie expiration (in seconds)
+ */
+#define OIDC_COOKIE_EXPIRATION 3
+
+/**
+ * OIDC cookie header key
+ */
+#define OIDC_COOKIE_HEADER_KEY "cookie"
+
+/**
+ * OIDC cookie header information key
+ */
+#define OIDC_AUTHORIZATION_HEADER_KEY "authorization"
+
+/**
+ * OIDC cookie header information key
+ */
+#define OIDC_COOKIE_HEADER_INFORMATION_KEY "Identity="
+
+/**
+ * OIDC cookie header if user cancelled
+ */
+#define OIDC_COOKIE_HEADER_ACCESS_DENIED "Identity=Denied"
+
+/**
+ * OIDC expected response_type while authorizing
+ */
+#define OIDC_EXPECTED_AUTHORIZATION_RESPONSE_TYPE "code"
+
+/**
+ * OIDC expected scope part while authorizing
+ */
+#define OIDC_EXPECTED_AUTHORIZATION_SCOPE "openid"
+
+/**
+ * OIDC error key for invalid client
+ */
+#define OIDC_ERROR_KEY_INVALID_CLIENT "invalid_client"
+
+/**
+ * OIDC error key for invalid scopes
+ */
+#define OIDC_ERROR_KEY_INVALID_SCOPE "invalid_scope"
+
+/**
+ * OIDC error key for invalid requests
+ */
+#define OIDC_ERROR_KEY_INVALID_REQUEST "invalid_request"
+
+/**
+ * OIDC error key for invalid tokens
+ */
+#define OIDC_ERROR_KEY_INVALID_TOKEN "invalid_token"
+
+/**
+ * OIDC error key for invalid cookies
+ */
+#define OIDC_ERROR_KEY_INVALID_COOKIE "invalid_cookie"
+
+/**
+ * OIDC error key for generic server errors
+ */
+#define OIDC_ERROR_KEY_SERVER_ERROR "server_error"
+
+/**
+ * OIDC error key for unsupported grants
+ */
+#define OIDC_ERROR_KEY_UNSUPPORTED_GRANT_TYPE "unsupported_grant_type"
+
+/**
+ * OIDC error key for unsupported response types
+ */
+#define OIDC_ERROR_KEY_UNSUPPORTED_RESPONSE_TYPE "unsupported_response_type"
+
+/**
+ * OIDC error key for unauthorized clients
+ */
+#define OIDC_ERROR_KEY_UNAUTHORIZED_CLIENT "unauthorized_client"
+
+/**
+ * OIDC error key for denied access
+ */
+#define OIDC_ERROR_KEY_ACCESS_DENIED "access_denied"
+
+
+
+/**
+ * OIDC ignored parameter array
+ */
+static char* OIDC_ignored_parameter_array [] =
+{
+ "display",
+ "prompt",
+ "ui_locales",
+ "response_mode",
+ "id_token_hint",
+ "login_hint",
+ "acr_values"
+};
+
+/**
+ * OIDC Hash map that keeps track of issued cookies
+ */
+struct GNUNET_CONTAINER_MultiHashMap *OIDC_cookie_jar_map;
+
+/**
+ * OIDC authorized identities and times hashmap
+ */
+struct GNUNET_CONTAINER_MultiHashMap *OIDC_identity_grants;
+
+/**
+ * OIDC Hash map that keeps track of used authorization code(s)
+ */
+struct GNUNET_CONTAINER_MultiHashMap *OIDC_used_ticket_map;
+
+/**
+ * Hash map that links the issued access token to the corresponding ticket and ego
+ */
+struct GNUNET_CONTAINER_MultiHashMap *OIDC_access_token_map;
+
+/**
+ * The configuration handle
+ */
+const struct GNUNET_CONFIGURATION_Handle *cfg;
+
+/**
+ * HTTP methods allows for this plugin
+ */
+static char* allow_methods;
+
+/**
+ * @brief struct returned by the initialization function of the plugin
+ */
+struct Plugin
+{
+ const struct GNUNET_CONFIGURATION_Handle *cfg;
+};
+
+/**
+ * OIDC needed variables
+ */
+struct OIDC_Variables
+{
+ /**
+ * The RP client public key
+ */
+ struct GNUNET_CRYPTO_EcdsaPublicKey client_pkey;
+
+ /**
+ * The OIDC client id of the RP
+ */
+ char *client_id;
+
+ /**
+ * The OIDC redirect uri
+ */
+ char *redirect_uri;
+
+ /**
+ * The list of oidc scopes
+ */
+ char *scope;
+
+ /**
+ * The OIDC state
+ */
+ char *state;
+
+ /**
+ * The OIDC nonce
+ */
+ char *nonce;
+
+ /**
+ * The OIDC response type
+ */
+ char *response_type;
+
+ /**
+ * The identity chosen by the user to login
+ */
+ char *login_identity;
+
+ /**
+ * User cancelled authorization/login
+ */
+ int user_cancelled;
+
+ /**
+ * The response JSON
+ */
+ json_t *response;
+
+};
+
+/**
+ * The ego list
+ */
+struct EgoEntry
+{
+ /**
+ * DLL
+ */
+ struct EgoEntry *next;
+
+ /**
+ * DLL
+ */
+ struct EgoEntry *prev;
+
+ /**
+ * Ego Identifier
+ */
+ char *identifier;
+
+ /**
+ * Public key string
+ */
+ char *keystring;
+
+ /**
+ * The Ego
+ */
+ struct GNUNET_IDENTITY_Ego *ego;
+};
+
+
+struct RequestHandle
+{
+ /**
+ * Ego list
+ */
+ struct EgoEntry *ego_head;
+
+ /**
+ * Ego list
+ */
+ struct EgoEntry *ego_tail;
+
+ /**
+ * Selected ego
+ */
+ struct EgoEntry *ego_entry;
+
+ /**
+ * Pointer to ego private key
+ */
+ struct GNUNET_CRYPTO_EcdsaPrivateKey priv_key;
+
+ /**
+ * OIDC variables
+ */
+ struct OIDC_Variables *oidc;
+
+ /**
+ * The processing state
+ */
+ int state;
+
+ /**
+ * Handle to Identity service.
+ */
+ struct GNUNET_IDENTITY_Handle *identity_handle;
+
+ /**
+ * Rest connection
+ */
+ struct GNUNET_REST_RequestHandle *rest_handle;
+
+ /**
+ * GNS handle
+ */
+ struct GNUNET_GNS_Handle *gns_handle;
+
+ /**
+ * GNS lookup op
+ */
+ struct GNUNET_GNS_LookupRequest *gns_op;
+
+ /**
+ * Handle to NAMESTORE
+ */
+ struct GNUNET_NAMESTORE_Handle *namestore_handle;
+
+ /**
+ * Iterator for NAMESTORE
+ */
+ struct GNUNET_NAMESTORE_ZoneIterator *namestore_handle_it;
+
+ /**
+ * Attribute claim list
+ */
+ struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList *attr_list;
+
+ /**
+ * IDENTITY Operation
+ */
+ struct GNUNET_IDENTITY_Operation *op;
+
+ /**
+ * Identity Provider
+ */
+ struct GNUNET_RECLAIM_Handle *idp;
+
+ /**
+ * Idp Operation
+ */
+ struct GNUNET_RECLAIM_Operation *idp_op;
+
+ /**
+ * Attribute iterator
+ */
+ struct GNUNET_RECLAIM_AttributeIterator *attr_it;
+
+ /**
+ * Ticket iterator
+ */
+ struct GNUNET_RECLAIM_TicketIterator *ticket_it;
+
+ /**
+ * A ticket
+ */
+ struct GNUNET_RECLAIM_Ticket ticket;
+
+ /**
+ * Desired timeout for the lookup (default is no timeout).
+ */
+ struct GNUNET_TIME_Relative timeout;
+
+ /**
+ * ID of a task associated with the resolution process.
+ */
+ struct GNUNET_SCHEDULER_Task *timeout_task;
+
+ /**
+ * The plugin result processor
+ */
+ GNUNET_REST_ResultProcessor proc;
+
+ /**
+ * The closure of the result processor
+ */
+ void *proc_cls;
+
+ /**
+ * The url
+ */
+ char *url;
+
+ /**
+ * The tld for redirect
+ */
+ char *tld;
+
+ /**
+ * The redirect prefix
+ */
+ char *redirect_prefix;
+
+ /**
+ * The redirect suffix
+ */
+ char *redirect_suffix;
+
+ /**
+ * Error response message
+ */
+ char *emsg;
+
+ /**
+ * Error response description
+ */
+ char *edesc;
+
+ /**
+ * Reponse code
+ */
+ int response_code;
+
+};
+
+/**
+ * Cleanup lookup handle
+ * @param handle Handle to clean up
+ */
+static void
+cleanup_handle (struct RequestHandle *handle)
+{
+ struct GNUNET_RECLAIM_ATTRIBUTE_ClaimListEntry *claim_entry;
+ struct GNUNET_RECLAIM_ATTRIBUTE_ClaimListEntry *claim_tmp;
+ struct EgoEntry *ego_entry;
+ struct EgoEntry *ego_tmp;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Cleaning up\n");
+ if (NULL != handle->timeout_task)
+ GNUNET_SCHEDULER_cancel (handle->timeout_task);
+ if (NULL != handle->identity_handle)
+ GNUNET_IDENTITY_disconnect (handle->identity_handle);
+ if (NULL != handle->attr_it)
+ GNUNET_RECLAIM_get_attributes_stop (handle->attr_it);
+ if (NULL != handle->ticket_it)
+ GNUNET_RECLAIM_ticket_iteration_stop (handle->ticket_it);
+ if (NULL != handle->idp)
+ GNUNET_RECLAIM_disconnect (handle->idp);
+ GNUNET_free_non_null (handle->url);
+ GNUNET_free_non_null (handle->tld);
+ GNUNET_free_non_null (handle->redirect_prefix);
+ GNUNET_free_non_null (handle->redirect_suffix);
+ GNUNET_free_non_null (handle->emsg);
+ GNUNET_free_non_null (handle->edesc);
+ if (NULL != handle->gns_op)
+ GNUNET_GNS_lookup_cancel (handle->gns_op);
+ if (NULL != handle->gns_handle)
+ GNUNET_GNS_disconnect (handle->gns_handle);
+
+ if (NULL != handle->namestore_handle)
+ GNUNET_NAMESTORE_disconnect (handle->namestore_handle);
+ if (NULL != handle->oidc)
+ {
+ GNUNET_free_non_null (handle->oidc->client_id);
+ GNUNET_free_non_null (handle->oidc->login_identity);
+ GNUNET_free_non_null (handle->oidc->nonce);
+ GNUNET_free_non_null (handle->oidc->redirect_uri);
+ GNUNET_free_non_null (handle->oidc->response_type);
+ GNUNET_free_non_null (handle->oidc->scope);
+ GNUNET_free_non_null (handle->oidc->state);
+ json_decref (handle->oidc->response);
+ GNUNET_free (handle->oidc);
+ }
+ if ( NULL != handle->attr_list )
+ {
+ for (claim_entry = handle->attr_list->list_head;
+ NULL != claim_entry;)
+ {
+ claim_tmp = claim_entry;
+ claim_entry = claim_entry->next;
+ GNUNET_free (claim_tmp->claim);
+ GNUNET_free (claim_tmp);
+ }
+ GNUNET_free (handle->attr_list);
+ }
+ for (ego_entry = handle->ego_head;
+ NULL != ego_entry;)
+ {
+ ego_tmp = ego_entry;
+ ego_entry = ego_entry->next;
+ GNUNET_free (ego_tmp->identifier);
+ GNUNET_free (ego_tmp->keystring);
+ GNUNET_free (ego_tmp);
+ }
+ GNUNET_free_non_null (handle->attr_it);
+ GNUNET_free (handle);
+}
+
+static void
+cleanup_handle_delayed (void *cls)
+{
+ cleanup_handle (cls);
+}
+
+
+/**
+ * Task run on error, sends error message. Cleans up everything.
+ *
+ * @param cls the `struct RequestHandle`
+ */
+static void
+do_error (void *cls)
+{
+ struct RequestHandle *handle = cls;
+ struct MHD_Response *resp;
+ char *json_error;
+
+ GNUNET_asprintf (&json_error, "{ \"error\" : \"%s\", \"error_description\" : \"%s\"%s%s%s}",
+ handle->emsg,
+ (NULL != handle->edesc) ? handle->edesc : "",
+ (NULL != handle->oidc->state) ? ", \"state\":\"" : "",
+ (NULL != handle->oidc->state) ? handle->oidc->state : "",
+ (NULL != handle->oidc->state) ? "\"" : "");
+ if ( 0 == handle->response_code )
+ handle->response_code = MHD_HTTP_BAD_REQUEST;
+ resp = GNUNET_REST_create_response (json_error);
+ if (MHD_HTTP_UNAUTHORIZED == handle->response_code)
+ MHD_add_response_header (resp,
+ MHD_HTTP_HEADER_WWW_AUTHENTICATE,
+ "Basic");
+ MHD_add_response_header (resp,
+ MHD_HTTP_HEADER_CONTENT_TYPE,
+ "application/json");
+ handle->proc (handle->proc_cls, resp, handle->response_code);
+ GNUNET_SCHEDULER_add_now (&cleanup_handle_delayed, handle);
+ GNUNET_free (json_error);
+}
+
+
+/**
+ * Task run on error in userinfo endpoint, sends error header. Cleans up
+ * everything
+ *
+ * @param cls the `struct RequestHandle`
+ */
+static void
+do_userinfo_error (void *cls)
+{
+ struct RequestHandle *handle = cls;
+ struct MHD_Response *resp;
+ char *error;
+
+ GNUNET_asprintf (&error, "error=\"%s\", error_description=\"%s\"",
+ handle->emsg,
+ (NULL != handle->edesc) ? handle->edesc : "");
+ resp = GNUNET_REST_create_response ("");
+ MHD_add_response_header (resp,
+ MHD_HTTP_HEADER_WWW_AUTHENTICATE,
+ "Bearer");
+ handle->proc (handle->proc_cls, resp, handle->response_code);
+ GNUNET_SCHEDULER_add_now (&cleanup_handle_delayed, handle);
+ GNUNET_free (error);
+}
+
+
+/**
+ * Task run on error, sends error message and redirects. Cleans up everything.
+ *
+ * @param cls the `struct RequestHandle`
+ */
+static void
+do_redirect_error (void *cls)
+{
+ struct RequestHandle *handle = cls;
+ struct MHD_Response *resp;
+ char* redirect;
+ GNUNET_asprintf (&redirect,
+ "%s?error=%s&error_description=%s%s%s",
+ handle->oidc->redirect_uri, handle->emsg, handle->edesc,
+ (NULL != handle->oidc->state) ? "&state=" : "",
+ (NULL != handle->oidc->state) ? handle->oidc->state : "");
+ resp = GNUNET_REST_create_response ("");
+ MHD_add_response_header (resp, "Location", redirect);
+ handle->proc (handle->proc_cls, resp, MHD_HTTP_FOUND);
+ GNUNET_SCHEDULER_add_now (&cleanup_handle_delayed, handle);
+ GNUNET_free (redirect);
+}
+
+/**
+ * Task run on timeout, sends error message. Cleans up everything.
+ *
+ * @param cls the `struct RequestHandle`
+ */
+static void
+do_timeout (void *cls)
+{
+ struct RequestHandle *handle = cls;
+
+ handle->timeout_task = NULL;
+ do_error (handle);
+}
+
+/**
+ * Return attributes for claim
+ *
+ * @param cls the request handle
+ */
+static void
+return_userinfo_response (void *cls)
+{
+ char* result_str;
+ struct RequestHandle *handle = cls;
+ struct MHD_Response *resp;
+
+ result_str = json_dumps (handle->oidc->response, 0);
+
+ resp = GNUNET_REST_create_response (result_str);
+ handle->proc (handle->proc_cls, resp, MHD_HTTP_OK);
+ GNUNET_free (result_str);
+ cleanup_handle (handle);
+}
+
+/**
+ * Returns base64 encoded string urlencoded
+ *
+ * @param string the string to encode
+ * @return base64 encoded string
+ */
+static char*
+base64_encode (const char *s)
+{
+ char *enc;
+ char *enc_urlencode;
+ char *tmp;
+ int i;
+ int num_pads = 0;
+
+ GNUNET_STRINGS_base64_encode (s, strlen (s), &enc);
+ tmp = strchr (enc, '=');
+ num_pads = strlen (enc) - (tmp - enc);
+ GNUNET_assert ((3 > num_pads) && (0 <= num_pads));
+ if (0 == num_pads)
+ return enc;
+ enc_urlencode = GNUNET_malloc (strlen (enc) + num_pads*2);
+ strcpy (enc_urlencode, enc);
+ GNUNET_free (enc);
+ tmp = strchr (enc_urlencode, '=');
+ for (i = 0; i < num_pads; i++)
+ {
+ strcpy (tmp, "%3D"); //replace '=' with '%3D'
+ tmp += 3;
+ }
+ return enc_urlencode;
+}
+
+/**
+ * Respond to OPTIONS request
+ *
+ * @param con_handle the connection handle
+ * @param url the url
+ * @param cls the RequestHandle
+ */
+static void
+options_cont (struct GNUNET_REST_RequestHandle *con_handle,
+ const char* url,
+ void *cls)
+{
+ struct MHD_Response *resp;
+ struct RequestHandle *handle = cls;
+
+ //For now, independent of path return all options
+ resp = GNUNET_REST_create_response (NULL);
+ MHD_add_response_header (resp,
+ "Access-Control-Allow-Methods",
+ allow_methods);
+ handle->proc (handle->proc_cls, resp, MHD_HTTP_OK);
+ cleanup_handle (handle);
+ return;
+}
+
+
+/**
+ * Interprets cookie header and pass its identity keystring to handle
+ */
+static void
+cookie_identity_interpretation (struct RequestHandle *handle)
+{
+ struct GNUNET_HashCode cache_key;
+ char *cookies;
+ struct GNUNET_TIME_Absolute current_time, *relog_time;
+ char delimiter[] = "; ";
+ char *tmp_cookies;
+ char *token;
+ char *value;
+
+ //gets identity of login try with cookie
+ GNUNET_CRYPTO_hash (OIDC_COOKIE_HEADER_KEY, strlen (OIDC_COOKIE_HEADER_KEY),
+ &cache_key);
+ if ( GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->header_param_map,
+ &cache_key) )
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "No cookie found\n");
+ return;
+ }
+ //splits cookies and find 'Identity' cookie
+ tmp_cookies = GNUNET_CONTAINER_multihashmap_get ( handle->rest_handle->header_param_map, &cache_key);
+ cookies = GNUNET_strdup (tmp_cookies);
+ token = strtok (cookies, delimiter);
+ handle->oidc->user_cancelled = GNUNET_NO;
+ handle->oidc->login_identity = NULL;
+ if (NULL == token)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Unable to parse cookie: %s\n",
+ cookies);
+ GNUNET_free (cookies);
+ return;
+ }
+
+ while (NULL != token)
+ {
+ if (0 == strcmp (token,
+ OIDC_COOKIE_HEADER_ACCESS_DENIED))
+ {
+ handle->oidc->user_cancelled = GNUNET_YES;
+ GNUNET_free (cookies);
+ return;
+ }
+ if (NULL != strstr (token, OIDC_COOKIE_HEADER_INFORMATION_KEY))
+ break;
+ token = strtok (NULL, delimiter);
+ }
+ if (NULL == token)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "No cookie value to process: %s\n",
+ cookies);
+ GNUNET_free (cookies);
+ return;
+ }
+ GNUNET_CRYPTO_hash (token, strlen (token),
+ &cache_key);
+ if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (OIDC_cookie_jar_map, &cache_key))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "Found cookie `%s', but no corresponding expiration entry present...\n",
+ token);
+ GNUNET_free (cookies);
+ return;
+ }
+ relog_time = GNUNET_CONTAINER_multihashmap_get (OIDC_cookie_jar_map,
+ &cache_key);
+ current_time = GNUNET_TIME_absolute_get ();
+ // 30 min after old login -> redirect to login
+ if ( current_time.abs_value_us > relog_time->abs_value_us )
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "Found cookie `%s', but it is expired.\n",
+ token);
+ GNUNET_free (cookies);
+ return;
+ }
+ value = strtok (token, OIDC_COOKIE_HEADER_INFORMATION_KEY);
+ GNUNET_assert (NULL != value);
+ handle->oidc->login_identity = GNUNET_strdup (value);
+}
+
+/**
+ * Redirects to login page stored in configuration file
+ */
+static void
+login_redirect (void *cls)
+{
+ char *login_base_url;
+ char *new_redirect;
+ struct MHD_Response *resp;
+ struct RequestHandle *handle = cls;
+
+ if ( GNUNET_OK
+ == GNUNET_CONFIGURATION_get_value_string (cfg, "reclaim-rest-plugin",
+ "address", &login_base_url) )
+ {
+ GNUNET_asprintf (&new_redirect, "%s?%s=%s&%s=%s&%s=%s&%s=%s&%s=%s&%s=%s",
+ login_base_url,
+ OIDC_RESPONSE_TYPE_KEY,
+ handle->oidc->response_type,
+ OIDC_CLIENT_ID_KEY,
+ handle->oidc->client_id,
+ OIDC_REDIRECT_URI_KEY,
+ handle->oidc->redirect_uri,
+ OIDC_SCOPE_KEY,
+ handle->oidc->scope,
+ OIDC_STATE_KEY,
+ (NULL != handle->oidc->state) ? handle->oidc->state : "",
+ OIDC_NONCE_KEY,
+ (NULL != handle->oidc->nonce) ? handle->oidc->nonce : "");
+ resp = GNUNET_REST_create_response ("");
+ MHD_add_response_header (resp, "Location", new_redirect);
+ GNUNET_free (login_base_url);
+ }
+ else
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_SERVER_ERROR);
+ handle->edesc = GNUNET_strdup ("gnunet configuration failed");
+ handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR;
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ return;
+ }
+ handle->proc (handle->proc_cls, resp, MHD_HTTP_FOUND);
+ GNUNET_free (new_redirect);
+ GNUNET_SCHEDULER_add_now (&cleanup_handle_delayed, handle);
+}
+
+/**
+ * Does internal server error when iteration failed.
+ */
+static void
+oidc_iteration_error (void *cls)
+{
+ struct RequestHandle *handle = cls;
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_SERVER_ERROR);
+ handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR;
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+}
+
+
+/**
+ * Issues ticket and redirects to relying party with the authorization code as
+ * parameter. Otherwise redirects with error
+ */
+static void
+oidc_ticket_issue_cb (void* cls,
+ const struct GNUNET_RECLAIM_Ticket *ticket)
+{
+ struct RequestHandle *handle = cls;
+ struct MHD_Response *resp;
+ char *ticket_str;
+ char *redirect_uri;
+ char *code_json_string;
+ char *code_base64_final_string;
+
+ handle->idp_op = NULL;
+ handle->ticket = *ticket;
+ if (NULL == ticket)
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_SERVER_ERROR);
+ handle->edesc = GNUNET_strdup ("Server cannot generate ticket.");
+ GNUNET_SCHEDULER_add_now (&do_redirect_error, handle);
+ return;
+ }
+ ticket_str = GNUNET_STRINGS_data_to_string_alloc (&handle->ticket,
+ sizeof (struct GNUNET_RECLAIM_Ticket));
+ //TODO change if more attributes are needed (see max_age)
+ code_json_string = OIDC_build_authz_code (&handle->priv_key,
+ &handle->ticket,
+ handle->oidc->nonce);
+ code_base64_final_string = base64_encode (code_json_string);
+ if ( (NULL != handle->redirect_prefix) &&
+ (NULL != handle->redirect_suffix) &&
+ (NULL != handle->tld) )
+ {
+
+ GNUNET_asprintf (&redirect_uri, "%s.%s/%s?%s=%s&state=%s",
+ handle->redirect_prefix,
+ handle->tld,
+ handle->redirect_suffix,
+ handle->oidc->response_type,
+ code_base64_final_string, handle->oidc->state);
+ } else {
+ GNUNET_asprintf (&redirect_uri, "%s?%s=%s&state=%s",
+ handle->oidc->redirect_uri,
+ handle->oidc->response_type,
+ code_base64_final_string, handle->oidc->state);
+
+ }
+ resp = GNUNET_REST_create_response ("");
+ MHD_add_response_header (resp, "Location", redirect_uri);
+ handle->proc (handle->proc_cls, resp, MHD_HTTP_FOUND);
+ GNUNET_SCHEDULER_add_now (&cleanup_handle_delayed, handle);
+ GNUNET_free (redirect_uri);
+ GNUNET_free (ticket_str);
+ GNUNET_free (code_json_string);
+ GNUNET_free (code_base64_final_string);
+}
+
+static void
+oidc_collect_finished_cb (void *cls)
+{
+ struct RequestHandle *handle = cls;
+ handle->attr_it = NULL;
+ handle->ticket_it = NULL;
+ if (NULL == handle->attr_list->list_head)
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_SCOPE);
+ handle->edesc = GNUNET_strdup ("The requested scope is not available.");
+ GNUNET_SCHEDULER_add_now (&do_redirect_error, handle);
+ return;
+ }
+ handle->idp_op = GNUNET_RECLAIM_ticket_issue (handle->idp,
+ &handle->priv_key,
+ &handle->oidc->client_pkey,
+ handle->attr_list,
+ &oidc_ticket_issue_cb,
+ handle);
+}
+
+
+/**
+ * Collects all attributes for an ego if in scope parameter
+ */
+static void
+oidc_attr_collect (void *cls,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *identity,
+ const struct GNUNET_RECLAIM_ATTRIBUTE_Claim *attr)
+{
+ struct RequestHandle *handle = cls;
+ struct GNUNET_RECLAIM_ATTRIBUTE_ClaimListEntry *le;
+ char* scope_variables;
+ char* scope_variable;
+ char delimiter[]=" ";
+
+ if ( (NULL == attr->name) || (NULL == attr->data) )
+ {
+ GNUNET_RECLAIM_get_attributes_next (handle->attr_it);
+ return;
+ }
+
+ scope_variables = GNUNET_strdup (handle->oidc->scope);
+ scope_variable = strtok (scope_variables, delimiter);
+ while (NULL != scope_variable)
+ {
+ if ( 0 == strcmp (attr->name, scope_variable) )
+ {
+ break;
+ }
+ scope_variable = strtok (NULL, delimiter);
+ }
+ if ( NULL == scope_variable )
+ {
+ GNUNET_RECLAIM_get_attributes_next (handle->attr_it);
+ GNUNET_free (scope_variables);
+ return;
+ }
+ GNUNET_free (scope_variables);
+
+ le = GNUNET_new (struct GNUNET_RECLAIM_ATTRIBUTE_ClaimListEntry);
+ le->claim = GNUNET_RECLAIM_ATTRIBUTE_claim_new (attr->name, attr->type,
+ attr->data, attr->data_size);
+ GNUNET_CONTAINER_DLL_insert (handle->attr_list->list_head,
+ handle->attr_list->list_tail, le);
+ GNUNET_RECLAIM_get_attributes_next (handle->attr_it);
+}
+
+
+/**
+ * Checks time and cookie and redirects accordingly
+ */
+static void
+code_redirect (void *cls)
+{
+ struct RequestHandle *handle = cls;
+ struct GNUNET_TIME_Absolute current_time, *relog_time;
+ struct GNUNET_CRYPTO_EcdsaPublicKey pubkey, ego_pkey;
+ struct GNUNET_HashCode cache_key;
+ char *identity_cookie;
+
+ GNUNET_asprintf (&identity_cookie, "Identity=%s", handle->oidc->login_identity);
+ GNUNET_CRYPTO_hash (identity_cookie, strlen (identity_cookie), &cache_key);
+ GNUNET_free (identity_cookie);
+ //No login time for identity -> redirect to login
+ if ( GNUNET_YES
+ == GNUNET_CONTAINER_multihashmap_contains (OIDC_cookie_jar_map,
+ &cache_key) )
+ {
+ relog_time = GNUNET_CONTAINER_multihashmap_get (OIDC_cookie_jar_map,
+ &cache_key);
+ current_time = GNUNET_TIME_absolute_get ();
+ // 30 min after old login -> redirect to login
+ if ( current_time.abs_value_us <= relog_time->abs_value_us )
+ {
+ if ( GNUNET_OK
+ != GNUNET_CRYPTO_ecdsa_public_key_from_string (
+ handle->oidc->login_identity,
+ strlen (handle->oidc->login_identity), &pubkey) )
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_COOKIE);
+ handle->edesc = GNUNET_strdup ("The cookie of a login identity is not valid");
+ GNUNET_SCHEDULER_add_now (&do_redirect_error, handle);
+ return;
+ }
+ // iterate over egos and compare their public key
+ for (handle->ego_entry = handle->ego_head;
+ NULL != handle->ego_entry; handle->ego_entry = handle->ego_entry->next)
+ {
+ GNUNET_IDENTITY_ego_get_public_key (handle->ego_entry->ego, &ego_pkey);
+ if ( 0 == memcmp (&ego_pkey,
+ &pubkey,
+ sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey)) )
+ {
+ handle->priv_key = *GNUNET_IDENTITY_ego_get_private_key (handle->ego_entry->ego);
+ handle->idp = GNUNET_RECLAIM_connect (cfg);
+ handle->attr_list = GNUNET_new (struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList);
+ handle->attr_it = GNUNET_RECLAIM_get_attributes_start (handle->idp,
+ &handle->priv_key,
+ &oidc_iteration_error,
+ handle,
+ &oidc_attr_collect,
+ handle,
+ &oidc_collect_finished_cb,
+ handle);
+ return;
+ }
+ }
+ GNUNET_SCHEDULER_add_now (&login_redirect, handle);
+ return;
+ }
+ }
+}
+
+
+static void
+build_redirect (void *cls)
+{
+ struct RequestHandle *handle = cls;
+ struct MHD_Response *resp;
+ char* redirect_uri;
+
+ if (GNUNET_YES == handle->oidc->user_cancelled)
+ {
+ if ( (NULL != handle->redirect_prefix) &&
+ (NULL != handle->redirect_suffix) &&
+ (NULL != handle->tld) )
+ {
+ GNUNET_asprintf (&redirect_uri, "%s.%s/%s?error=%s&error_description=%s&state=%s",
+ handle->redirect_prefix,
+ handle->tld,
+ handle->redirect_suffix,
+ "access_denied",
+ "User denied access",
+ handle->oidc->state);
+ } else {
+ GNUNET_asprintf (&redirect_uri, "%s?error=%s&error_description=%s&state=%s",
+ handle->oidc->redirect_uri,
+ "access_denied",
+ "User denied access",
+ handle->oidc->state);
+
+ }
+ resp = GNUNET_REST_create_response ("");
+ MHD_add_response_header (resp, "Location", redirect_uri);
+ handle->proc (handle->proc_cls, resp, MHD_HTTP_FOUND);
+ GNUNET_SCHEDULER_add_now (&cleanup_handle_delayed, handle);
+ GNUNET_free (redirect_uri);
+ return;
+ }
+ GNUNET_SCHEDULER_add_now (&code_redirect, handle);
+}
+
+
+static void
+lookup_redirect_uri_result (void *cls,
+ uint32_t rd_count,
+ const struct GNUNET_GNSRECORD_Data *rd)
+{
+ struct RequestHandle *handle = cls;
+ char *tmp;
+ char *tmp_key_str;
+ char *pos;
+ struct GNUNET_CRYPTO_EcdsaPublicKey redirect_zone;
+
+ handle->gns_op = NULL;
+ if (0 == rd_count)
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_SERVER_ERROR);
+ handle->edesc = GNUNET_strdup ("Server cannot generate ticket, redirect uri not found.");
+ GNUNET_SCHEDULER_add_now (&do_redirect_error, handle);
+ return;
+ }
+ for (int i = 0; i < rd_count; i++)
+ {
+ if (GNUNET_GNSRECORD_TYPE_RECLAIM_OIDC_REDIRECT != rd[i].record_type)
+ continue;
+ if (0 != strncmp (rd[i].data,
+ handle->oidc->redirect_uri,
+ rd[i].data_size))
+ continue;
+ tmp = GNUNET_strndup (rd[i].data,
+ rd[i].data_size);
+ if (NULL == strstr (tmp,
+ handle->oidc->client_id))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Redirect uri %s does not contain client_id %s",
+ tmp,
+ handle->oidc->client_id);
+ } else {
+
+ pos = strrchr (tmp,
+ (unsigned char) '.');
+ *pos = '\0';
+ handle->redirect_prefix = GNUNET_strdup (tmp);
+ tmp_key_str = pos + 1;
+ pos = strchr (tmp_key_str,
+ (unsigned char) '/');
+ *pos = '\0';
+ handle->redirect_suffix = GNUNET_strdup (pos + 1);
+
+ GNUNET_STRINGS_string_to_data (tmp_key_str,
+ strlen (tmp_key_str),
+ &redirect_zone,
+ sizeof (redirect_zone));
+ }
+ GNUNET_SCHEDULER_add_now (&build_redirect, handle);
+ GNUNET_free (tmp);
+ return;
+ }
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_SERVER_ERROR);
+ handle->edesc = GNUNET_strdup ("Server cannot generate ticket, redirect uri not found.");
+ GNUNET_SCHEDULER_add_now (&do_redirect_error, handle);
+}
+
+
+
+/**
+ * Initiate redirect back to client.
+ */
+static void
+client_redirect (void *cls)
+{
+ struct RequestHandle *handle = cls;
+
+ /* Lookup client redirect uri to verify request */
+ handle->gns_op = GNUNET_GNS_lookup (handle->gns_handle,
+ GNUNET_GNS_EMPTY_LABEL_AT,
+ &handle->oidc->client_pkey,
+ GNUNET_GNSRECORD_TYPE_RECLAIM_OIDC_REDIRECT,
+ GNUNET_GNS_LO_DEFAULT,
+ &lookup_redirect_uri_result,
+ handle);
+
+}
+
+
+/**
+ * Iteration over all results finished, build final
+ * response.
+ *
+ * @param cls the `struct RequestHandle`
+ */
+static void
+build_authz_response (void *cls)
+{
+ struct RequestHandle *handle = cls;
+ struct GNUNET_HashCode cache_key;
+
+ char *expected_scope;
+ char delimiter[]=" ";
+ int number_of_ignored_parameter, iterator;
+
+
+ // REQUIRED value: redirect_uri
+ GNUNET_CRYPTO_hash (OIDC_REDIRECT_URI_KEY, strlen (OIDC_REDIRECT_URI_KEY),
+ &cache_key);
+ if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->url_param_map,
+ &cache_key))
+ {
+ handle->emsg=GNUNET_strdup (OIDC_ERROR_KEY_INVALID_REQUEST);
+ handle->edesc=GNUNET_strdup ("missing parameter redirect_uri");
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ return;
+ }
+ handle->oidc->redirect_uri =
+ GNUNET_strdup (GNUNET_CONTAINER_multihashmap_get (handle->rest_handle->url_param_map,
+ &cache_key));
+
+ // REQUIRED value: response_type
+ GNUNET_CRYPTO_hash (OIDC_RESPONSE_TYPE_KEY, strlen (OIDC_RESPONSE_TYPE_KEY),
+ &cache_key);
+ if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->url_param_map,
+ &cache_key))
+ {
+ handle->emsg=GNUNET_strdup (OIDC_ERROR_KEY_INVALID_REQUEST);
+ handle->edesc=GNUNET_strdup ("missing parameter response_type");
+ GNUNET_SCHEDULER_add_now (&do_redirect_error, handle);
+ return;
+ }
+ handle->oidc->response_type = GNUNET_CONTAINER_multihashmap_get (handle->rest_handle->url_param_map,
+ &cache_key);
+ handle->oidc->response_type = GNUNET_strdup (handle->oidc->response_type);
+
+ // REQUIRED value: scope
+ GNUNET_CRYPTO_hash (OIDC_SCOPE_KEY, strlen (OIDC_SCOPE_KEY), &cache_key);
+ if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->url_param_map,
+ &cache_key))
+ {
+ handle->emsg=GNUNET_strdup (OIDC_ERROR_KEY_INVALID_SCOPE);
+ handle->edesc=GNUNET_strdup ("missing parameter scope");
+ GNUNET_SCHEDULER_add_now (&do_redirect_error, handle);
+ return;
+ }
+ handle->oidc->scope = GNUNET_CONTAINER_multihashmap_get (handle->rest_handle->url_param_map,
+ &cache_key);
+ handle->oidc->scope = GNUNET_strdup (handle->oidc->scope);
+
+ //OPTIONAL value: nonce
+ GNUNET_CRYPTO_hash (OIDC_NONCE_KEY, strlen (OIDC_NONCE_KEY), &cache_key);
+ if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->url_param_map,
+ &cache_key))
+ {
+ handle->oidc->nonce = GNUNET_CONTAINER_multihashmap_get (handle->rest_handle->url_param_map,
+ &cache_key);
+ handle->oidc->nonce = GNUNET_strdup (handle->oidc->nonce);
+ }
+
+ //TODO check other values if needed
+ number_of_ignored_parameter = sizeof (OIDC_ignored_parameter_array) / sizeof (char *);
+ for (iterator = 0; iterator < number_of_ignored_parameter; iterator++)
+ {
+ GNUNET_CRYPTO_hash (OIDC_ignored_parameter_array[iterator],
+ strlen (OIDC_ignored_parameter_array[iterator]),
+ &cache_key);
+ if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->url_param_map,
+ &cache_key))
+ {
+ handle->emsg=GNUNET_strdup (OIDC_ERROR_KEY_ACCESS_DENIED);
+ GNUNET_asprintf (&handle->edesc, "Server will not handle parameter: %s",
+ OIDC_ignored_parameter_array[iterator]);
+ GNUNET_SCHEDULER_add_now (&do_redirect_error, handle);
+ return;
+ }
+ }
+
+ // Checks if response_type is 'code'
+ if (0 != strcmp (handle->oidc->response_type, OIDC_EXPECTED_AUTHORIZATION_RESPONSE_TYPE))
+ {
+ handle->emsg=GNUNET_strdup (OIDC_ERROR_KEY_UNSUPPORTED_RESPONSE_TYPE);
+ handle->edesc=GNUNET_strdup ("The authorization server does not support "
+ "obtaining this authorization code.");
+ GNUNET_SCHEDULER_add_now (&do_redirect_error, handle);
+ return;
+ }
+
+ // Checks if scope contains 'openid'
+ expected_scope = GNUNET_strdup (handle->oidc->scope);
+ char* test;
+ test = strtok (expected_scope, delimiter);
+ while (NULL != test)
+ {
+ if ( 0 == strcmp (OIDC_EXPECTED_AUTHORIZATION_SCOPE, expected_scope) )
+ break;
+ test = strtok (NULL, delimiter);
+ }
+ if (NULL == test)
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_SCOPE);
+ handle->edesc=GNUNET_strdup ("The requested scope is invalid, unknown, or "
+ "malformed.");
+ GNUNET_SCHEDULER_add_now (&do_redirect_error, handle);
+ GNUNET_free (expected_scope);
+ return;
+ }
+
+ GNUNET_free (expected_scope);
+ if ( (NULL == handle->oidc->login_identity) &&
+ (GNUNET_NO == handle->oidc->user_cancelled))
+ GNUNET_SCHEDULER_add_now (&login_redirect, handle);
+ else
+ GNUNET_SCHEDULER_add_now (&client_redirect, handle);
+}
+
+/**
+ * Iterate over tlds in config
+ */
+static void
+tld_iter (void *cls,
+ const char *section,
+ const char *option,
+ const char *value)
+{
+ struct RequestHandle *handle = cls;
+ struct GNUNET_CRYPTO_EcdsaPublicKey pkey;
+
+ if (GNUNET_OK !=
+ GNUNET_CRYPTO_ecdsa_public_key_from_string (value,
+ strlen (value),
+ &pkey))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Skipping non key %s\n",
+ value);
+ return;
+ }
+ if (0 == memcmp (&pkey, &handle->oidc->client_pkey,
+ sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey)))
+ handle->tld = GNUNET_strdup (option+1);
+}
+
+/**
+ * Responds to authorization GET and url-encoded POST request
+ *
+ * @param con_handle the connection handle
+ * @param url the url
+ * @param cls the RequestHandle
+ */
+static void
+authorize_endpoint (struct GNUNET_REST_RequestHandle *con_handle,
+ const char* url,
+ void *cls)
+{
+ struct RequestHandle *handle = cls;
+ struct GNUNET_HashCode cache_key;
+ struct EgoEntry *tmp_ego;
+ const struct GNUNET_CRYPTO_EcdsaPrivateKey *priv_key;
+ struct GNUNET_CRYPTO_EcdsaPublicKey pkey;
+
+ cookie_identity_interpretation (handle);
+
+ //RECOMMENDED value: state - REQUIRED for answers
+ GNUNET_CRYPTO_hash (OIDC_STATE_KEY, strlen (OIDC_STATE_KEY), &cache_key);
+ if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->url_param_map,
+ &cache_key))
+ {
+ handle->oidc->state = GNUNET_CONTAINER_multihashmap_get (handle->rest_handle->url_param_map,
+ &cache_key);
+ handle->oidc->state = GNUNET_strdup (handle->oidc->state);
+ }
+
+ // REQUIRED value: client_id
+ GNUNET_CRYPTO_hash (OIDC_CLIENT_ID_KEY, strlen (OIDC_CLIENT_ID_KEY),
+ &cache_key);
+ if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->url_param_map,
+ &cache_key))
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_REQUEST);
+ handle->edesc = GNUNET_strdup ("missing parameter client_id");
+ handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR;
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ return;
+ }
+ handle->oidc->client_id = GNUNET_strdup (GNUNET_CONTAINER_multihashmap_get (handle->rest_handle->url_param_map,
+ &cache_key));
+
+ if ( GNUNET_OK
+ != GNUNET_CRYPTO_ecdsa_public_key_from_string (handle->oidc->client_id,
+ strlen (handle->oidc->client_id),
+ &handle->oidc->client_pkey) )
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_UNAUTHORIZED_CLIENT);
+ handle->edesc = GNUNET_strdup ("The client is not authorized to request an "
+ "authorization code using this method.");
+ handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR;
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ return;
+ }
+
+
+ if ( NULL == handle->ego_head )
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_SERVER_ERROR);
+ handle->edesc = GNUNET_strdup ("Egos are missing");
+ handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR;
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ return;
+ }
+
+ handle->ego_entry = handle->ego_head;
+ handle->priv_key = *GNUNET_IDENTITY_ego_get_private_key (handle->ego_head->ego);
+ //If we know this identity, translated the corresponding TLD
+ //TODO: We might want to have a reverse lookup functionality for TLDs?
+ for (tmp_ego = handle->ego_head; NULL != tmp_ego; tmp_ego = tmp_ego->next)
+ {
+ priv_key = GNUNET_IDENTITY_ego_get_private_key (tmp_ego->ego);
+ GNUNET_CRYPTO_ecdsa_key_get_public (priv_key,
+ &pkey);
+ if (0 == memcmp (&pkey, &handle->oidc->client_pkey,
+ sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey)))
+ {
+ handle->tld = GNUNET_strdup (tmp_ego->identifier);
+ handle->ego_entry = handle->ego_tail;
+ }
+ }
+ if (NULL == handle->tld)
+ GNUNET_CONFIGURATION_iterate_section_values (cfg,
+ "gns",
+ tld_iter,
+ handle);
+ if (NULL == handle->tld)
+ handle->tld = GNUNET_strdup (handle->oidc->client_id);
+ GNUNET_SCHEDULER_add_now (&build_authz_response, handle);
+}
+
+/**
+ * Combines an identity with a login time and responds OK to login request
+ *
+ * @param con_handle the connection handle
+ * @param url the url
+ * @param cls the RequestHandle
+ */
+static void
+login_cont (struct GNUNET_REST_RequestHandle *con_handle,
+ const char* url,
+ void *cls)
+{
+ struct MHD_Response *resp = GNUNET_REST_create_response ("");
+ struct RequestHandle *handle = cls;
+ struct GNUNET_HashCode cache_key;
+ struct GNUNET_TIME_Absolute *current_time;
+ struct GNUNET_TIME_Absolute *last_time;
+ char* cookie;
+ char* header_val;
+ json_t *root;
+ json_error_t error;
+ json_t *identity;
+ char term_data[handle->rest_handle->data_size+1];
+ term_data[handle->rest_handle->data_size] = '\0';
+ GNUNET_memcpy (term_data, handle->rest_handle->data, handle->rest_handle->data_size);
+ root = json_loads (term_data, JSON_DECODE_ANY, &error);
+ identity = json_object_get (root, "identity");
+ if (!json_is_string (identity))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Error parsing json string from %s\n",
+ term_data);
+ handle->proc (handle->proc_cls, resp, MHD_HTTP_BAD_REQUEST);
+ json_decref (root);
+ GNUNET_SCHEDULER_add_now (&cleanup_handle_delayed, handle);
+ return;
+ }
+ GNUNET_asprintf (&cookie,
+ "Identity=%s",
+ json_string_value (identity));
+ GNUNET_asprintf (&header_val,
+ "%s;Max-Age=%d",
+ cookie,
+ OIDC_COOKIE_EXPIRATION);
+ MHD_add_response_header (resp, "Set-Cookie", header_val);
+ MHD_add_response_header (resp, "Access-Control-Allow-Methods", "POST");
+ GNUNET_CRYPTO_hash (cookie, strlen (cookie), &cache_key);
+
+ if (0 != strcmp (json_string_value (identity),
+ "Denied"))
+ {
+ current_time = GNUNET_new (struct GNUNET_TIME_Absolute);
+ *current_time = GNUNET_TIME_relative_to_absolute (GNUNET_TIME_relative_multiply (GNUNET_TIME_relative_get_second_ (),
+ OIDC_COOKIE_EXPIRATION));
+ last_time = GNUNET_CONTAINER_multihashmap_get (OIDC_cookie_jar_map, &cache_key);
+ GNUNET_free_non_null (last_time);
+ GNUNET_CONTAINER_multihashmap_put (OIDC_cookie_jar_map,
+ &cache_key,
+ current_time,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
+ }
+ handle->proc (handle->proc_cls, resp, MHD_HTTP_OK);
+ GNUNET_free (cookie);
+ GNUNET_free (header_val);
+ json_decref (root);
+ GNUNET_SCHEDULER_add_now (&cleanup_handle_delayed, handle);
+}
+
+static int
+check_authorization (struct RequestHandle *handle,
+ struct GNUNET_CRYPTO_EcdsaPublicKey *cid)
+{
+ struct GNUNET_HashCode cache_key;
+ char *authorization;
+ char *credentials;
+ char *basic_authorization;
+ char *client_id;
+ char *pass;
+ char *expected_pass;
+ int client_exists = GNUNET_NO;
+
+ GNUNET_CRYPTO_hash (OIDC_AUTHORIZATION_HEADER_KEY,
+ strlen (OIDC_AUTHORIZATION_HEADER_KEY),
+ &cache_key);
+ if ( GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->header_param_map,
+ &cache_key) )
+ {
+ handle->emsg=GNUNET_strdup (OIDC_ERROR_KEY_INVALID_CLIENT);
+ handle->edesc=GNUNET_strdup ("missing authorization");
+ handle->response_code = MHD_HTTP_UNAUTHORIZED;
+ return GNUNET_SYSERR;
+ }
+ authorization = GNUNET_CONTAINER_multihashmap_get (handle->rest_handle->header_param_map,
+ &cache_key);
+
+ //split header in "Basic" and [content]
+ credentials = strtok (authorization, " ");
+ if (0 != strcmp ("Basic", credentials))
+ {
+ handle->emsg=GNUNET_strdup (OIDC_ERROR_KEY_INVALID_CLIENT);
+ handle->response_code = MHD_HTTP_UNAUTHORIZED;
+ return GNUNET_SYSERR;
+ }
+ credentials = strtok (NULL, " ");
+ if (NULL == credentials)
+ {
+ handle->emsg=GNUNET_strdup (OIDC_ERROR_KEY_INVALID_CLIENT);
+ handle->response_code = MHD_HTTP_UNAUTHORIZED;
+ return GNUNET_SYSERR;
+ }
+ GNUNET_STRINGS_base64_decode (credentials,
+ strlen (credentials),
+ (void**)&basic_authorization);
+
+ if ( NULL == basic_authorization )
+ {
+ handle->emsg=GNUNET_strdup (OIDC_ERROR_KEY_INVALID_CLIENT);
+ handle->response_code = MHD_HTTP_UNAUTHORIZED;
+ return GNUNET_SYSERR;
+ }
+ client_id = strtok (basic_authorization, ":");
+ if ( NULL == client_id )
+ {
+ GNUNET_free_non_null (basic_authorization);
+ handle->emsg=GNUNET_strdup (OIDC_ERROR_KEY_INVALID_CLIENT);
+ handle->response_code = MHD_HTTP_UNAUTHORIZED;
+ return GNUNET_SYSERR;
+ }
+ pass = strtok (NULL, ":");
+ if (NULL == pass)
+ {
+ GNUNET_free_non_null (basic_authorization);
+ handle->emsg=GNUNET_strdup (OIDC_ERROR_KEY_INVALID_CLIENT);
+ handle->response_code = MHD_HTTP_UNAUTHORIZED;
+ return GNUNET_SYSERR;
+ }
+
+ //check client password
+ if ( GNUNET_OK
+ == GNUNET_CONFIGURATION_get_value_string (cfg,
+ "reclaim-rest-plugin",
+ "psw",
+ &expected_pass) )
+ {
+ if (0 != strcmp (expected_pass, pass))
+ {
+ GNUNET_free_non_null (basic_authorization);
+ GNUNET_free (expected_pass);
+ handle->emsg=GNUNET_strdup (OIDC_ERROR_KEY_INVALID_CLIENT);
+ handle->response_code = MHD_HTTP_UNAUTHORIZED;
+ return GNUNET_SYSERR;
+ }
+ GNUNET_free (expected_pass);
+ }
+ else
+ {
+ GNUNET_free_non_null (basic_authorization);
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_SERVER_ERROR);
+ handle->edesc = GNUNET_strdup ("gnunet configuration failed");
+ handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR;
+ return GNUNET_SYSERR;
+ }
+
+ //check client_id
+ for (handle->ego_entry = handle->ego_head; NULL != handle->ego_entry; )
+ {
+ if (0 == strcmp (handle->ego_entry->keystring, client_id))
+ {
+ client_exists = GNUNET_YES;
+ break;
+ }
+ handle->ego_entry = handle->ego_entry->next;
+ }
+ if (GNUNET_NO == client_exists)
+ {
+ GNUNET_free_non_null (basic_authorization);
+ handle->emsg=GNUNET_strdup (OIDC_ERROR_KEY_INVALID_CLIENT);
+ handle->response_code = MHD_HTTP_UNAUTHORIZED;
+ return GNUNET_SYSERR;
+ }
+ GNUNET_STRINGS_string_to_data (client_id,
+ strlen (client_id),
+ cid,
+ sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey));
+
+ GNUNET_free (basic_authorization);
+ return GNUNET_OK;
+}
+
+static int
+ego_exists (struct RequestHandle *handle,
+ struct GNUNET_CRYPTO_EcdsaPublicKey *test_key)
+{
+ struct EgoEntry *ego_entry;
+ struct GNUNET_CRYPTO_EcdsaPublicKey pub_key;
+
+ for (ego_entry = handle->ego_head; NULL != ego_entry; ego_entry = ego_entry->next)
+ {
+ GNUNET_IDENTITY_ego_get_public_key (ego_entry->ego, &pub_key);
+ if (0 == memcmp (&pub_key,
+ test_key,
+ sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey)))
+ {
+ break;
+ }
+ }
+ if (NULL == ego_entry)
+ return GNUNET_NO;
+ return GNUNET_YES;
+}
+
+static void
+store_ticket_reference (const struct RequestHandle *handle,
+ const char* access_token,
+ const struct GNUNET_RECLAIM_Ticket *ticket,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *cid)
+{
+ struct GNUNET_HashCode cache_key;
+ char *id_ticket_combination;
+ char *ticket_string;
+ char *client_id;
+
+ GNUNET_CRYPTO_hash (access_token,
+ strlen (access_token),
+ &cache_key);
+ client_id = GNUNET_STRINGS_data_to_string_alloc (cid,
+ sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey));
+ ticket_string = GNUNET_STRINGS_data_to_string_alloc (ticket,
+ sizeof (struct GNUNET_RECLAIM_Ticket));
+ GNUNET_asprintf (&id_ticket_combination,
+ "%s;%s",
+ client_id,
+ ticket_string);
+ GNUNET_CONTAINER_multihashmap_put (OIDC_access_token_map,
+ &cache_key,
+ id_ticket_combination,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
+
+ GNUNET_free (client_id);
+ GNUNET_free (ticket_string);
+}
+
+/**
+ * Responds to token url-encoded POST request
+ *
+ * @param con_handle the connection handle
+ * @param url the url
+ * @param cls the RequestHandle
+ */
+static void
+token_endpoint (struct GNUNET_REST_RequestHandle *con_handle,
+ const char* url,
+ void *cls)
+{
+ struct RequestHandle *handle = cls;
+ struct GNUNET_TIME_Relative expiration_time;
+ struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList *cl;
+ struct GNUNET_RECLAIM_Ticket *ticket;
+ struct GNUNET_CRYPTO_EcdsaPublicKey cid;
+ struct GNUNET_HashCode cache_key;
+ struct MHD_Response *resp;
+ char *grant_type;
+ char *code;
+ char *json_response;
+ char *id_token;
+ char *access_token;
+ char *jwt_secret;
+ char *nonce;
+ int i = 1;
+
+ /*
+ * Check Authorization
+ */
+ if (GNUNET_SYSERR == check_authorization (handle,
+ &cid))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "OIDC authorization for token endpoint failed\n");
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ return;
+ }
+
+ /*
+ * Check parameter
+ */
+
+ //TODO Do not allow multiple equal parameter names
+ //REQUIRED grant_type
+ GNUNET_CRYPTO_hash (OIDC_GRANT_TYPE_KEY, strlen (OIDC_GRANT_TYPE_KEY), &cache_key);
+ if (GNUNET_NO ==
+ GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->url_param_map,
+ &cache_key))
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_REQUEST);
+ handle->edesc = GNUNET_strdup ("missing parameter grant_type");
+ handle->response_code = MHD_HTTP_BAD_REQUEST;
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ return;
+ }
+ grant_type = GNUNET_CONTAINER_multihashmap_get (handle->rest_handle->url_param_map,
+ &cache_key);
+
+ //REQUIRED code
+ GNUNET_CRYPTO_hash (OIDC_CODE_KEY, strlen (OIDC_CODE_KEY), &cache_key);
+ if (GNUNET_NO ==
+ GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->url_param_map,
+ &cache_key))
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_REQUEST);
+ handle->edesc = GNUNET_strdup ("missing parameter code");
+ handle->response_code = MHD_HTTP_BAD_REQUEST;
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ return;
+ }
+ code = GNUNET_CONTAINER_multihashmap_get (handle->rest_handle->url_param_map,
+ &cache_key);
+
+ //REQUIRED redirect_uri
+ GNUNET_CRYPTO_hash (OIDC_REDIRECT_URI_KEY, strlen (OIDC_REDIRECT_URI_KEY),
+ &cache_key);
+ if (GNUNET_NO ==
+ GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->url_param_map,
+ &cache_key) )
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_REQUEST);
+ handle->edesc = GNUNET_strdup ("missing parameter redirect_uri");
+ handle->response_code = MHD_HTTP_BAD_REQUEST;
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ return;
+ }
+
+ //Check parameter grant_type == "authorization_code"
+ if (0 != strcmp (OIDC_GRANT_TYPE_VALUE, grant_type))
+ {
+ handle->emsg=GNUNET_strdup (OIDC_ERROR_KEY_UNSUPPORTED_GRANT_TYPE);
+ handle->response_code = MHD_HTTP_BAD_REQUEST;
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ return;
+ }
+ GNUNET_CRYPTO_hash (code, strlen (code), &cache_key);
+ if (GNUNET_SYSERR ==
+ GNUNET_CONTAINER_multihashmap_put (OIDC_used_ticket_map,
+ &cache_key,
+ &i,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY) )
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_REQUEST);
+ handle->edesc = GNUNET_strdup ("Cannot use the same code more than once");
+ handle->response_code = MHD_HTTP_BAD_REQUEST;
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ return;
+ }
+
+ //decode code
+ if (GNUNET_OK != OIDC_parse_authz_code (&cid,
+ code,
+ &ticket,
+ &nonce))
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_REQUEST);
+ handle->edesc = GNUNET_strdup ("invalid code");
+ handle->response_code = MHD_HTTP_BAD_REQUEST;
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ return;
+ }
+
+ //create jwt
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_time (cfg,
+ "reclaim-rest-plugin",
+ "expiration_time",
+ &expiration_time))
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_SERVER_ERROR);
+ handle->edesc = GNUNET_strdup ("gnunet configuration failed");
+ handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR;
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ GNUNET_free (ticket);
+ return;
+ }
+
+
+ //TODO OPTIONAL acr,amr,azp
+ if (GNUNET_NO == ego_exists (handle,
+ &ticket->audience))
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_REQUEST);
+ handle->edesc = GNUNET_strdup ("invalid code...");
+ handle->response_code = MHD_HTTP_BAD_REQUEST;
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ GNUNET_free (ticket);
+ }
+ if ( GNUNET_OK
+ != GNUNET_CONFIGURATION_get_value_string (cfg,
+ "reclaim-rest-plugin",
+ "jwt_secret",
+ &jwt_secret) )
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_REQUEST);
+ handle->edesc = GNUNET_strdup ("No signing secret configured!");
+ handle->response_code = MHD_HTTP_INTERNAL_SERVER_ERROR;
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ GNUNET_free (ticket);
+ return;
+ }
+ //TODO We should collect the attributes here. cl always empty
+ cl = GNUNET_new (struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList);
+ id_token = OIDC_id_token_new (&ticket->audience,
+ &ticket->identity,
+ cl,
+ &expiration_time,
+ (NULL != nonce) ? nonce : NULL,
+ jwt_secret);
+ access_token = OIDC_access_token_new ();
+ OIDC_build_token_response (access_token,
+ id_token,
+ &expiration_time,
+ &json_response);
+
+ store_ticket_reference (handle,
+ access_token,
+ ticket,
+ &cid);
+ resp = GNUNET_REST_create_response (json_response);
+ MHD_add_response_header (resp, "Cache-Control", "no-store");
+ MHD_add_response_header (resp, "Pragma", "no-cache");
+ MHD_add_response_header (resp, "Content-Type", "application/json");
+ handle->proc (handle->proc_cls, resp, MHD_HTTP_OK);
+ GNUNET_RECLAIM_ATTRIBUTE_list_destroy (cl);
+ GNUNET_free (access_token);
+ GNUNET_free (json_response);
+ GNUNET_free (ticket);
+ GNUNET_free (id_token);
+ GNUNET_SCHEDULER_add_now (&cleanup_handle_delayed, handle);
+}
+
+/**
+ * Collects claims and stores them in handle
+ */
+static void
+consume_ticket (void *cls,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *identity,
+ const struct GNUNET_RECLAIM_ATTRIBUTE_Claim *attr)
+{
+ struct RequestHandle *handle = cls;
+ char *tmp_value;
+ json_t *value;
+
+ if (NULL == identity)
+ {
+ GNUNET_SCHEDULER_add_now (&return_userinfo_response, handle);
+ return;
+ }
+ tmp_value = GNUNET_RECLAIM_ATTRIBUTE_value_to_string (attr->type,
+ attr->data,
+ attr->data_size);
+ value = json_string (tmp_value);
+ json_object_set_new (handle->oidc->response,
+ attr->name,
+ value);
+ GNUNET_free (tmp_value);
+}
+
+/**
+ * Responds to userinfo GET and url-encoded POST request
+ *
+ * @param con_handle the connection handle
+ * @param url the url
+ * @param cls the RequestHandle
+ */
+static void
+userinfo_endpoint (struct GNUNET_REST_RequestHandle *con_handle,
+ const char* url, void *cls)
+{
+ //TODO expiration time
+ struct RequestHandle *handle = cls;
+ char delimiter[] = " ";
+ char delimiter_db[] = ";";
+ struct GNUNET_HashCode cache_key;
+ char *authorization, *authorization_type, *authorization_access_token;
+ char *client_ticket, *client, *ticket_str;
+ struct GNUNET_RECLAIM_Ticket *ticket;
+
+ GNUNET_CRYPTO_hash (OIDC_AUTHORIZATION_HEADER_KEY,
+ strlen (OIDC_AUTHORIZATION_HEADER_KEY),
+ &cache_key);
+ if ( GNUNET_NO
+ == GNUNET_CONTAINER_multihashmap_contains (handle->rest_handle->header_param_map,
+ &cache_key) )
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_TOKEN);
+ handle->edesc = GNUNET_strdup ("No Access Token");
+ handle->response_code = MHD_HTTP_UNAUTHORIZED;
+ GNUNET_SCHEDULER_add_now (&do_userinfo_error, handle);
+ return;
+ }
+ authorization = GNUNET_CONTAINER_multihashmap_get (
+ handle->rest_handle->header_param_map, &cache_key);
+
+ //split header in "Bearer" and access_token
+ authorization = GNUNET_strdup (authorization);
+ authorization_type = strtok (authorization, delimiter);
+ if ( 0 != strcmp ("Bearer", authorization_type) )
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_TOKEN);
+ handle->edesc = GNUNET_strdup ("No Access Token");
+ handle->response_code = MHD_HTTP_UNAUTHORIZED;
+ GNUNET_SCHEDULER_add_now (&do_userinfo_error, handle);
+ GNUNET_free (authorization);
+ return;
+ }
+ authorization_access_token = strtok (NULL, delimiter);
+ if ( NULL == authorization_access_token )
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_TOKEN);
+ handle->edesc = GNUNET_strdup ("No Access Token");
+ handle->response_code = MHD_HTTP_UNAUTHORIZED;
+ GNUNET_SCHEDULER_add_now (&do_userinfo_error, handle);
+ GNUNET_free (authorization);
+ return;
+ }
+
+ GNUNET_CRYPTO_hash (authorization_access_token,
+ strlen (authorization_access_token),
+ &cache_key);
+ if ( GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains (OIDC_access_token_map,
+ &cache_key) )
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_TOKEN);
+ handle->edesc = GNUNET_strdup ("The Access Token expired");
+ handle->response_code = MHD_HTTP_UNAUTHORIZED;
+ GNUNET_SCHEDULER_add_now (&do_userinfo_error, handle);
+ GNUNET_free (authorization);
+ return;
+ }
+
+ client_ticket = GNUNET_CONTAINER_multihashmap_get (OIDC_access_token_map,
+ &cache_key);
+ client_ticket = GNUNET_strdup (client_ticket);
+ client = strtok (client_ticket,delimiter_db);
+ if (NULL == client)
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_TOKEN);
+ handle->edesc = GNUNET_strdup ("The Access Token expired");
+ handle->response_code = MHD_HTTP_UNAUTHORIZED;
+ GNUNET_SCHEDULER_add_now (&do_userinfo_error, handle);
+ GNUNET_free (authorization);
+ GNUNET_free (client_ticket);
+ return;
+ }
+ handle->ego_entry = handle->ego_head;
+ for (; NULL != handle->ego_entry; handle->ego_entry = handle->ego_entry->next)
+ {
+ if (0 == strcmp (handle->ego_entry->keystring,client))
+ break;
+ }
+ if (NULL == handle->ego_entry)
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_TOKEN);
+ handle->edesc = GNUNET_strdup ("The Access Token expired");
+ handle->response_code = MHD_HTTP_UNAUTHORIZED;
+ GNUNET_SCHEDULER_add_now (&do_userinfo_error, handle);
+ GNUNET_free (authorization);
+ GNUNET_free (client_ticket);
+ return;
+ }
+ ticket_str = strtok (NULL, delimiter_db);
+ if (NULL == ticket_str)
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_TOKEN);
+ handle->edesc = GNUNET_strdup ("The Access Token expired");
+ handle->response_code = MHD_HTTP_UNAUTHORIZED;
+ GNUNET_SCHEDULER_add_now (&do_userinfo_error, handle);
+ GNUNET_free (authorization);
+ GNUNET_free (client_ticket);
+ return;
+ }
+ ticket = GNUNET_new (struct GNUNET_RECLAIM_Ticket);
+ if ( GNUNET_OK
+ != GNUNET_STRINGS_string_to_data (ticket_str,
+ strlen (ticket_str),
+ ticket,
+ sizeof (struct GNUNET_RECLAIM_Ticket)))
+ {
+ handle->emsg = GNUNET_strdup (OIDC_ERROR_KEY_INVALID_TOKEN);
+ handle->edesc = GNUNET_strdup ("The Access Token expired");
+ handle->response_code = MHD_HTTP_UNAUTHORIZED;
+ GNUNET_SCHEDULER_add_now (&do_userinfo_error, handle);
+ GNUNET_free (ticket);
+ GNUNET_free (authorization);
+ GNUNET_free (client_ticket);
+ return;
+ }
+
+ handle->idp = GNUNET_RECLAIM_connect (cfg);
+ handle->oidc->response = json_object ();
+ json_object_set_new (handle->oidc->response,
+ "sub",
+ json_string (handle->ego_entry->keystring));
+ handle->idp_op = GNUNET_RECLAIM_ticket_consume (handle->idp,
+ GNUNET_IDENTITY_ego_get_private_key (handle->ego_entry->ego),
+ ticket,
+ consume_ticket,
+ handle);
+ GNUNET_free (ticket);
+ GNUNET_free (authorization);
+ GNUNET_free (client_ticket);
+
+}
+
+
+/**
+ * Handle rest request
+ *
+ * @param handle the request handle
+ */
+static void
+init_cont (struct RequestHandle *handle)
+{
+ struct GNUNET_REST_RequestHandlerError err;
+ static const struct GNUNET_REST_RequestHandler handlers[] = {
+ {MHD_HTTP_METHOD_GET, GNUNET_REST_API_NS_AUTHORIZE, &authorize_endpoint},
+ {MHD_HTTP_METHOD_POST, GNUNET_REST_API_NS_AUTHORIZE, &authorize_endpoint}, //url-encoded
+ {MHD_HTTP_METHOD_POST, GNUNET_REST_API_NS_LOGIN, &login_cont},
+ {MHD_HTTP_METHOD_POST, GNUNET_REST_API_NS_TOKEN, &token_endpoint },
+ {MHD_HTTP_METHOD_GET, GNUNET_REST_API_NS_USERINFO, &userinfo_endpoint },
+ {MHD_HTTP_METHOD_POST, GNUNET_REST_API_NS_USERINFO, &userinfo_endpoint },
+ {MHD_HTTP_METHOD_OPTIONS, GNUNET_REST_API_NS_OIDC,
+ &options_cont},
+ GNUNET_REST_HANDLER_END
+ };
+
+ if (GNUNET_NO == GNUNET_REST_handle_request (handle->rest_handle,
+ handlers,
+ &err,
+ handle))
+ {
+ handle->response_code = err.error_code;
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ }
+}
+
+/**
+ * If listing is enabled, prints information about the egos.
+ *
+ * This function is initially called for all egos and then again
+ * whenever a ego's identifier changes or if it is deleted. At the
+ * end of the initial pass over all egos, the function is once called
+ * with 'NULL' for 'ego'. That does NOT mean that the callback won't
+ * be invoked in the future or that there was an error.
+ *
+ * When used with 'GNUNET_IDENTITY_create' or 'GNUNET_IDENTITY_get',
+ * this function is only called ONCE, and 'NULL' being passed in
+ * 'ego' does indicate an error (i.e. name is taken or no default
+ * value is known). If 'ego' is non-NULL and if '*ctx'
+ * is set in those callbacks, the value WILL be passed to a subsequent
+ * call to the identity callback of 'GNUNET_IDENTITY_connect' (if
+ * that one was not NULL).
+ *
+ * When an identity is renamed, this function is called with the
+ * (known) ego but the NEW identifier.
+ *
+ * When an identity is deleted, this function is called with the
+ * (known) ego and "NULL" for the 'identifier'. In this case,
+ * the 'ego' is henceforth invalid (and the 'ctx' should also be
+ * cleaned up).
+ *
+ * @param cls closure
+ * @param ego ego handle
+ * @param ctx context for application to store data for this ego
+ * (during the lifetime of this process, initially NULL)
+ * @param identifier identifier assigned by the user for this ego,
+ * NULL if the user just deleted the ego and it
+ * must thus no longer be used
+ */
+static void
+list_ego (void *cls,
+ struct GNUNET_IDENTITY_Ego *ego,
+ void **ctx,
+ const char *identifier)
+{
+ struct RequestHandle *handle = cls;
+ struct EgoEntry *ego_entry;
+ struct GNUNET_CRYPTO_EcdsaPublicKey pk;
+
+ if ((NULL == ego) && (ID_REST_STATE_INIT == handle->state))
+ {
+ handle->state = ID_REST_STATE_POST_INIT;
+ init_cont (handle);
+ return;
+ }
+ if (ID_REST_STATE_INIT == handle->state) {
+ ego_entry = GNUNET_new (struct EgoEntry);
+ GNUNET_IDENTITY_ego_get_public_key (ego, &pk);
+ ego_entry->keystring =
+ GNUNET_CRYPTO_ecdsa_public_key_to_string (&pk);
+ ego_entry->ego = ego;
+ ego_entry->identifier = GNUNET_strdup (identifier);
+ GNUNET_CONTAINER_DLL_insert_tail (handle->ego_head,
+ handle->ego_tail,
+ ego_entry);
+ return;
+ }
+ /* Ego renamed or added */
+ if (identifier != NULL) {
+ for (ego_entry = handle->ego_head; NULL != ego_entry; ego_entry = ego_entry->next) {
+ if (ego_entry->ego == ego) {
+ /* Rename */
+ GNUNET_free (ego_entry->identifier);
+ ego_entry->identifier = GNUNET_strdup (identifier);
+ break;
+ }
+ }
+ if (NULL == ego_entry) {
+ /* Add */
+ ego_entry = GNUNET_new (struct EgoEntry);
+ GNUNET_IDENTITY_ego_get_public_key (ego, &pk);
+ ego_entry->keystring =
+ GNUNET_CRYPTO_ecdsa_public_key_to_string (&pk);
+ ego_entry->ego = ego;
+ ego_entry->identifier = GNUNET_strdup (identifier);
+ GNUNET_CONTAINER_DLL_insert_tail (handle->ego_head,
+ handle->ego_tail,
+ ego_entry);
+ }
+ } else {
+ /* Delete */
+ for (ego_entry = handle->ego_head; NULL != ego_entry; ego_entry = ego_entry->next) {
+ if (ego_entry->ego == ego)
+ break;
+ }
+ if (NULL != ego_entry)
+ GNUNET_CONTAINER_DLL_remove (handle->ego_head,handle->ego_tail, ego_entry);
+ }
+
+}
+
+static void
+rest_identity_process_request (struct GNUNET_REST_RequestHandle *rest_handle,
+ GNUNET_REST_ResultProcessor proc,
+ void *proc_cls)
+{
+ struct RequestHandle *handle = GNUNET_new (struct RequestHandle);
+ handle->oidc = GNUNET_new (struct OIDC_Variables);
+ if (NULL == OIDC_cookie_jar_map)
+ OIDC_cookie_jar_map = GNUNET_CONTAINER_multihashmap_create (10, GNUNET_NO);
+ if (NULL == OIDC_identity_grants)
+ OIDC_identity_grants = GNUNET_CONTAINER_multihashmap_create (10, GNUNET_NO);
+ if (NULL == OIDC_used_ticket_map)
+ OIDC_used_ticket_map = GNUNET_CONTAINER_multihashmap_create (10, GNUNET_NO);
+ if (NULL == OIDC_access_token_map)
+ OIDC_access_token_map = GNUNET_CONTAINER_multihashmap_create (10, GNUNET_NO);
+ handle->response_code = 0;
+ handle->timeout = GNUNET_TIME_UNIT_FOREVER_REL;
+ handle->proc_cls = proc_cls;
+ handle->proc = proc;
+ handle->state = ID_REST_STATE_INIT;
+ handle->rest_handle = rest_handle;
+
+ handle->url = GNUNET_strdup (rest_handle->url);
+ if (handle->url[strlen (handle->url)-1] == '/')
+ handle->url[strlen (handle->url)-1] = '\0';
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Connecting...\n");
+ handle->identity_handle = GNUNET_IDENTITY_connect (cfg,
+ &list_ego,
+ handle);
+ handle->gns_handle = GNUNET_GNS_connect (cfg);
+ handle->namestore_handle = GNUNET_NAMESTORE_connect (cfg);
+ handle->timeout_task =
+ GNUNET_SCHEDULER_add_delayed (handle->timeout,
+ &do_timeout,
+ handle);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Connected\n");
+}
+
+/**
+ * Entry point for the plugin.
+ *
+ * @param cls Config info
+ * @return NULL on error, otherwise the plugin context
+ */
+void *
+libgnunet_plugin_rest_openid_connect_init (void *cls)
+{
+ static struct Plugin plugin;
+ struct GNUNET_REST_Plugin *api;
+
+ cfg = cls;
+ if (NULL != plugin.cfg)
+ return NULL; /* can only initialize once! */
+ memset (&plugin, 0, sizeof (struct Plugin));
+ plugin.cfg = cfg;
+ api = GNUNET_new (struct GNUNET_REST_Plugin);
+ api->cls = &plugin;
+ api->name = GNUNET_REST_API_NS_OIDC;
+ api->process_request = &rest_identity_process_request;
+ GNUNET_asprintf (&allow_methods,
+ "%s, %s, %s, %s, %s",
+ MHD_HTTP_METHOD_GET,
+ MHD_HTTP_METHOD_POST,
+ MHD_HTTP_METHOD_PUT,
+ MHD_HTTP_METHOD_DELETE,
+ MHD_HTTP_METHOD_OPTIONS);
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ _("Identity Provider REST API initialized\n"));
+ return api;
+}
+
+
+/**
+ * Exit point from the plugin.
+ *
+ * @param cls the plugin context (as returned by "init")
+ * @return always NULL
+ */
+void *
+libgnunet_plugin_rest_openid_connect_done (void *cls)
+{
+ struct GNUNET_REST_Plugin *api = cls;
+ struct Plugin *plugin = api->cls;
+ plugin->cfg = NULL;
+
+ struct GNUNET_CONTAINER_MultiHashMapIterator *hashmap_it;
+ void *value = NULL;
+ hashmap_it = GNUNET_CONTAINER_multihashmap_iterator_create (OIDC_cookie_jar_map);
+ while (GNUNET_YES ==
+ GNUNET_CONTAINER_multihashmap_iterator_next (hashmap_it, NULL, value))
+ GNUNET_free_non_null (value);
+ GNUNET_CONTAINER_multihashmap_destroy (OIDC_cookie_jar_map);
+
+ hashmap_it = GNUNET_CONTAINER_multihashmap_iterator_create (OIDC_identity_grants);
+ while (GNUNET_YES ==
+ GNUNET_CONTAINER_multihashmap_iterator_next (hashmap_it, NULL, value))
+ GNUNET_free_non_null (value);
+ GNUNET_CONTAINER_multihashmap_destroy (OIDC_identity_grants);
+
+ hashmap_it = GNUNET_CONTAINER_multihashmap_iterator_create (OIDC_used_ticket_map);
+ while (GNUNET_YES ==
+ GNUNET_CONTAINER_multihashmap_iterator_next (hashmap_it, NULL, value))
+ GNUNET_free_non_null (value);
+ GNUNET_CONTAINER_multihashmap_destroy (OIDC_used_ticket_map);
+
+ hashmap_it = GNUNET_CONTAINER_multihashmap_iterator_create (OIDC_access_token_map);
+ while (GNUNET_YES ==
+ GNUNET_CONTAINER_multihashmap_iterator_next (hashmap_it, NULL, value))
+ GNUNET_free_non_null (value);
+ GNUNET_CONTAINER_multihashmap_destroy (OIDC_access_token_map);
+ GNUNET_CONTAINER_multihashmap_iterator_destroy (hashmap_it);
+ GNUNET_free_non_null (allow_methods);
+ GNUNET_free (api);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Identity Provider REST plugin is finished\n");
+ return NULL;
+}
+
+/* end of plugin_rest_identity_provider.c */
diff --git a/src/reclaim/plugin_rest_reclaim.c b/src/reclaim/plugin_rest_reclaim.c
new file mode 100644
index 000000000..b36ed2bb6
--- /dev/null
+++ b/src/reclaim/plugin_rest_reclaim.c
@@ -0,0 +1,1104 @@
+/*
+ This file is part of GNUnet.
+ Copyright (C) 2012-2015 GNUnet e.V.
+
+ GNUnet is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Affero General Public License as published
+ by the Free Software Foundation, either version 3 of the License,
+ or (at your option) any later version.
+
+ GNUnet 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
+ Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+ SPDX-License-Identifier: AGPL3.0-or-later
+ */
+/**
+ * @author Martin Schanzenbach
+ * @author Philippe Buschmann
+ * @file reclaim/plugin_rest_reclaim.c
+ * @brief GNUnet reclaim REST plugin
+ *
+ */
+
+#include "platform.h"
+#include "gnunet_rest_plugin.h"
+#include "gnunet_identity_service.h"
+#include "gnunet_gns_service.h"
+#include "gnunet_gnsrecord_lib.h"
+#include "gnunet_namestore_service.h"
+#include "gnunet_rest_lib.h"
+#include "microhttpd.h"
+#include <jansson.h>
+#include <inttypes.h>
+#include "gnunet_signatures.h"
+#include "gnunet_reclaim_attribute_lib.h"
+#include "gnunet_reclaim_service.h"
+#include "json_reclaim.h"
+
+/**
+ * REST root namespace
+ */
+#define GNUNET_REST_API_NS_RECLAIM "/reclaim"
+
+/**
+ * Attribute namespace
+ */
+#define GNUNET_REST_API_NS_RECLAIM_ATTRIBUTES "/reclaim/attributes"
+
+/**
+ * Ticket namespace
+ */
+#define GNUNET_REST_API_NS_IDENTITY_TICKETS "/reclaim/tickets"
+
+/**
+ * Revoke namespace
+ */
+#define GNUNET_REST_API_NS_IDENTITY_REVOKE "/reclaim/revoke"
+
+/**
+ * Revoke namespace
+ */
+#define GNUNET_REST_API_NS_IDENTITY_CONSUME "/reclaim/consume"
+
+/**
+ * State while collecting all egos
+ */
+#define ID_REST_STATE_INIT 0
+
+/**
+ * Done collecting egos
+ */
+#define ID_REST_STATE_POST_INIT 1
+
+/**
+ * The configuration handle
+ */
+const struct GNUNET_CONFIGURATION_Handle *cfg;
+
+/**
+ * HTTP methods allows for this plugin
+ */
+static char* allow_methods;
+
+/**
+ * @brief struct returned by the initialization function of the plugin
+ */
+struct Plugin
+{
+ const struct GNUNET_CONFIGURATION_Handle *cfg;
+};
+
+/**
+ * The ego list
+ */
+struct EgoEntry
+{
+ /**
+ * DLL
+ */
+ struct EgoEntry *next;
+
+ /**
+ * DLL
+ */
+ struct EgoEntry *prev;
+
+ /**
+ * Ego Identifier
+ */
+ char *identifier;
+
+ /**
+ * Public key string
+ */
+ char *keystring;
+
+ /**
+ * The Ego
+ */
+ struct GNUNET_IDENTITY_Ego *ego;
+};
+
+
+struct RequestHandle
+{
+ /**
+ * Ego list
+ */
+ struct EgoEntry *ego_head;
+
+ /**
+ * Ego list
+ */
+ struct EgoEntry *ego_tail;
+
+ /**
+ * Selected ego
+ */
+ struct EgoEntry *ego_entry;
+
+ /**
+ * Pointer to ego private key
+ */
+ struct GNUNET_CRYPTO_EcdsaPrivateKey priv_key;
+
+ /**
+ * The processing state
+ */
+ int state;
+
+ /**
+ * Handle to Identity service.
+ */
+ struct GNUNET_IDENTITY_Handle *identity_handle;
+
+ /**
+ * Rest connection
+ */
+ struct GNUNET_REST_RequestHandle *rest_handle;
+
+ /**
+ * Handle to NAMESTORE
+ */
+ struct GNUNET_NAMESTORE_Handle *namestore_handle;
+
+ /**
+ * Iterator for NAMESTORE
+ */
+ struct GNUNET_NAMESTORE_ZoneIterator *namestore_handle_it;
+
+ /**
+ * Attribute claim list
+ */
+ struct GNUNET_RECLAIM_ATTRIBUTE_ClaimList *attr_list;
+
+ /**
+ * IDENTITY Operation
+ */
+ struct GNUNET_IDENTITY_Operation *op;
+
+ /**
+ * Identity Provider
+ */
+ struct GNUNET_RECLAIM_Handle *idp;
+
+ /**
+ * Idp Operation
+ */
+ struct GNUNET_RECLAIM_Operation *idp_op;
+
+ /**
+ * Attribute iterator
+ */
+ struct GNUNET_RECLAIM_AttributeIterator *attr_it;
+
+ /**
+ * Ticket iterator
+ */
+ struct GNUNET_RECLAIM_TicketIterator *ticket_it;
+
+ /**
+ * A ticket
+ */
+ struct GNUNET_RECLAIM_Ticket ticket;
+
+ /**
+ * Desired timeout for the lookup (default is no timeout).
+ */
+ struct GNUNET_TIME_Relative timeout;
+
+ /**
+ * ID of a task associated with the resolution process.
+ */
+ struct GNUNET_SCHEDULER_Task *timeout_task;
+
+ /**
+ * The plugin result processor
+ */
+ GNUNET_REST_ResultProcessor proc;
+
+ /**
+ * The closure of the result processor
+ */
+ void *proc_cls;
+
+ /**
+ * The url
+ */
+ char *url;
+
+ /**
+ * Error response message
+ */
+ char *emsg;
+
+ /**
+ * Reponse code
+ */
+ int response_code;
+
+ /**
+ * Response object
+ */
+ json_t *resp_object;
+
+};
+
+/**
+ * Cleanup lookup handle
+ * @param handle Handle to clean up
+ */
+static void
+cleanup_handle (struct RequestHandle *handle)
+{
+ struct GNUNET_RECLAIM_ATTRIBUTE_ClaimListEntry *claim_entry;
+ struct GNUNET_RECLAIM_ATTRIBUTE_ClaimListEntry *claim_tmp;
+ struct EgoEntry *ego_entry;
+ struct EgoEntry *ego_tmp;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Cleaning up\n");
+ if (NULL != handle->resp_object)
+ json_decref (handle->resp_object);
+ if (NULL != handle->timeout_task)
+ GNUNET_SCHEDULER_cancel (handle->timeout_task);
+ if (NULL != handle->identity_handle)
+ GNUNET_IDENTITY_disconnect (handle->identity_handle);
+ if (NULL != handle->attr_it)
+ GNUNET_RECLAIM_get_attributes_stop (handle->attr_it);
+ if (NULL != handle->ticket_it)
+ GNUNET_RECLAIM_ticket_iteration_stop (handle->ticket_it);
+ if (NULL != handle->idp)
+ GNUNET_RECLAIM_disconnect (handle->idp);
+ if (NULL != handle->url)
+ GNUNET_free (handle->url);
+ if (NULL != handle->emsg)
+ GNUNET_free (handle->emsg);
+ if (NULL != handle->namestore_handle)
+ GNUNET_NAMESTORE_disconnect (handle->namestore_handle);
+ if ( NULL != handle->attr_list )
+ {
+ for (claim_entry = handle->attr_list->list_head;
+ NULL != claim_entry;)
+ {
+ claim_tmp = claim_entry;
+ claim_entry = claim_entry->next;
+ GNUNET_free(claim_tmp->claim);
+ GNUNET_free(claim_tmp);
+ }
+ GNUNET_free (handle->attr_list);
+ }
+ for (ego_entry = handle->ego_head;
+ NULL != ego_entry;)
+ {
+ ego_tmp = ego_entry;
+ ego_entry = ego_entry->next;
+ GNUNET_free (ego_tmp->identifier);
+ GNUNET_free (ego_tmp->keystring);
+ GNUNET_free (ego_tmp);
+ }
+ if (NULL != handle->attr_it)
+ {
+ GNUNET_free(handle->attr_it);
+ }
+ GNUNET_free (handle);
+}
+
+static void
+cleanup_handle_delayed (void *cls)
+{
+ cleanup_handle (cls);
+}
+
+
+/**
+ * Task run on error, sends error message. Cleans up everything.
+ *
+ * @param cls the `struct RequestHandle`
+ */
+static void
+do_error (void *cls)
+{
+ struct RequestHandle *handle = cls;
+ struct MHD_Response *resp;
+ char *json_error;
+
+ GNUNET_asprintf (&json_error, "{ \"error\" : \"%s\" }",
+ handle->emsg);
+ if ( 0 == handle->response_code )
+ {
+ handle->response_code = MHD_HTTP_BAD_REQUEST;
+ }
+ resp = GNUNET_REST_create_response (json_error);
+ MHD_add_response_header (resp, "Content-Type", "application/json");
+ handle->proc (handle->proc_cls, resp, handle->response_code);
+ GNUNET_SCHEDULER_add_now (&cleanup_handle_delayed, handle);
+ GNUNET_free (json_error);
+}
+
+
+/**
+ * Task run on timeout, sends error message. Cleans up everything.
+ *
+ * @param cls the `struct RequestHandle`
+ */
+static void
+do_timeout (void *cls)
+{
+ struct RequestHandle *handle = cls;
+
+ handle->timeout_task = NULL;
+ do_error (handle);
+}
+
+
+static void
+collect_error_cb (void *cls)
+{
+ struct RequestHandle *handle = cls;
+
+ do_error (handle);
+}
+
+static void
+finished_cont (void *cls,
+ int32_t success,
+ const char *emsg)
+{
+ struct RequestHandle *handle = cls;
+ struct MHD_Response *resp;
+
+ resp = GNUNET_REST_create_response (emsg);
+ if (GNUNET_OK != success)
+ {
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ return;
+ }
+ handle->proc (handle->proc_cls, resp, MHD_HTTP_OK);
+ GNUNET_SCHEDULER_add_now (&cleanup_handle_delayed, handle);
+}
+
+
+/**
+ * Return attributes for identity
+ *
+ * @param cls the request handle
+ */
+static void
+return_response (void *cls)
+{
+ char* result_str;
+ struct RequestHandle *handle = cls;
+ struct MHD_Response *resp;
+
+ result_str = json_dumps (handle->resp_object, 0);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Result %s\n", result_str);
+ resp = GNUNET_REST_create_response (result_str);
+ handle->proc (handle->proc_cls, resp, MHD_HTTP_OK);
+ GNUNET_free (result_str);
+ cleanup_handle (handle);
+}
+
+static void
+collect_finished_cb (void *cls)
+{
+ struct RequestHandle *handle = cls;
+ //Done
+ handle->attr_it = NULL;
+ handle->ticket_it = NULL;
+ GNUNET_SCHEDULER_add_now (&return_response, handle);
+}
+
+
+/**
+ * Collect all attributes for an ego
+ *
+ */
+static void
+ticket_collect (void *cls,
+ const struct GNUNET_RECLAIM_Ticket *ticket)
+{
+ json_t *json_resource;
+ struct RequestHandle *handle = cls;
+ json_t *value;
+ char* tmp;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Adding ticket\n");
+ tmp = GNUNET_STRINGS_data_to_string_alloc (&ticket->rnd,
+ sizeof (uint64_t));
+ json_resource = json_object ();
+ GNUNET_free (tmp);
+ json_array_append (handle->resp_object,
+ json_resource);
+
+ tmp = GNUNET_STRINGS_data_to_string_alloc (&ticket->identity,
+ sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey));
+ value = json_string (tmp);
+ json_object_set_new (json_resource,
+ "issuer",
+ value);
+ GNUNET_free (tmp);
+ tmp = GNUNET_STRINGS_data_to_string_alloc (&ticket->audience,
+ sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey));
+ value = json_string (tmp);
+ json_object_set_new (json_resource,
+ "audience",
+ value);
+ GNUNET_free (tmp);
+ tmp = GNUNET_STRINGS_data_to_string_alloc (&ticket->rnd,
+ sizeof (uint64_t));
+ value = json_string (tmp);
+ json_object_set_new (json_resource,
+ "rnd",
+ value);
+ GNUNET_free (tmp);
+ GNUNET_RECLAIM_ticket_iteration_next (handle->ticket_it);
+}
+
+
+
+/**
+ * List tickets for identity request
+ *
+ * @param con_handle the connection handle
+ * @param url the url
+ * @param cls the RequestHandle
+ */
+static void
+list_tickets_cont (struct GNUNET_REST_RequestHandle *con_handle,
+ const char* url,
+ void *cls)
+{
+ const struct GNUNET_CRYPTO_EcdsaPrivateKey *priv_key;
+ struct RequestHandle *handle = cls;
+ struct EgoEntry *ego_entry;
+ char *identity;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Getting tickets for %s.\n",
+ handle->url);
+ if ( strlen (GNUNET_REST_API_NS_IDENTITY_TICKETS) >=
+ strlen (handle->url))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No identity given.\n");
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ return;
+ }
+ identity = handle->url + strlen (GNUNET_REST_API_NS_IDENTITY_TICKETS) + 1;
+
+ for (ego_entry = handle->ego_head;
+ NULL != ego_entry;
+ ego_entry = ego_entry->next)
+ if (0 == strcmp (identity, ego_entry->identifier))
+ break;
+ handle->resp_object = json_array ();
+
+ if (NULL == ego_entry)
+ {
+ //Done
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Ego %s not found.\n",
+ identity);
+ GNUNET_SCHEDULER_add_now (&return_response, handle);
+ return;
+ }
+ priv_key = GNUNET_IDENTITY_ego_get_private_key (ego_entry->ego);
+ handle->idp = GNUNET_RECLAIM_connect (cfg);
+ handle->ticket_it = GNUNET_RECLAIM_ticket_iteration_start (handle->idp,
+ priv_key,
+ &collect_error_cb,
+ handle,
+ &ticket_collect,
+ handle,
+ &collect_finished_cb,
+ handle);
+}
+
+
+static void
+add_attribute_cont (struct GNUNET_REST_RequestHandle *con_handle,
+ const char* url,
+ void *cls)
+{
+ const struct GNUNET_CRYPTO_EcdsaPrivateKey *identity_priv;
+ const char* identity;
+ struct RequestHandle *handle = cls;
+ struct EgoEntry *ego_entry;
+ struct GNUNET_RECLAIM_ATTRIBUTE_Claim *attribute;
+ struct GNUNET_TIME_Relative exp;
+ char term_data[handle->rest_handle->data_size+1];
+ json_t *data_json;
+ json_error_t err;
+ struct GNUNET_JSON_Specification attrspec[] = {
+ GNUNET_RECLAIM_JSON_spec_claim (&attribute),
+ GNUNET_JSON_spec_end()
+ };
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Adding an attribute for %s.\n",
+ handle->url);
+ if ( strlen (GNUNET_REST_API_NS_RECLAIM_ATTRIBUTES) >=
+ strlen (handle->url))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No identity given.\n");
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ return;
+ }
+ identity = handle->url + strlen (GNUNET_REST_API_NS_RECLAIM_ATTRIBUTES) + 1;
+
+ for (ego_entry = handle->ego_head;
+ NULL != ego_entry;
+ ego_entry = ego_entry->next)
+ if (0 == strcmp (identity, ego_entry->identifier))
+ break;
+
+ if (NULL == ego_entry)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Identity unknown (%s)\n", identity);
+ return;
+ }
+ identity_priv = GNUNET_IDENTITY_ego_get_private_key (ego_entry->ego);
+
+ if (0 >= handle->rest_handle->data_size)
+ {
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ return;
+ }
+
+ term_data[handle->rest_handle->data_size] = '\0';
+ GNUNET_memcpy (term_data,
+ handle->rest_handle->data,
+ handle->rest_handle->data_size);
+ data_json = json_loads (term_data,
+ JSON_DECODE_ANY,
+ &err);
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_JSON_parse (data_json, attrspec,
+ NULL, NULL));
+ json_decref (data_json);
+ if (NULL == attribute)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Unable to parse attribute from %s\n",
+ term_data);
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ return;
+ }
+ handle->idp = GNUNET_RECLAIM_connect (cfg);
+ exp = GNUNET_TIME_UNIT_HOURS;
+ handle->idp_op = GNUNET_RECLAIM_attribute_store (handle->idp,
+ identity_priv,
+ attribute,
+ &exp,
+ &finished_cont,
+ handle);
+ GNUNET_JSON_parse_free (attrspec);
+}
+
+
+
+/**
+ * Collect all attributes for an ego
+ *
+ */
+static void
+attr_collect (void *cls,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *identity,
+ const struct GNUNET_RECLAIM_ATTRIBUTE_Claim *attr)
+{
+ struct RequestHandle *handle = cls;
+ json_t *attr_obj;
+ const char* type;
+ char* tmp_value;
+
+ if ((NULL == attr->name) || (NULL == attr->data))
+ {
+ GNUNET_RECLAIM_get_attributes_next (handle->attr_it);
+ return;
+ }
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Adding attribute: %s\n",
+ attr->name);
+
+ tmp_value = GNUNET_RECLAIM_ATTRIBUTE_value_to_string (attr->type,
+ attr->data,
+ attr->data_size);
+
+ attr_obj = json_object ();
+ json_object_set_new (attr_obj,
+ "value",
+ json_string (tmp_value));
+ json_object_set_new (attr_obj,
+ "name",
+ json_string (attr->name));
+ type = GNUNET_RECLAIM_ATTRIBUTE_number_to_typename (attr->type);
+ json_object_set_new (attr_obj,
+ "type",
+ json_string (type));
+ json_array_append (handle->resp_object,
+ attr_obj);
+ json_decref (attr_obj);
+ GNUNET_free(tmp_value);
+ GNUNET_RECLAIM_get_attributes_next (handle->attr_it);
+}
+
+
+
+/**
+ * List attributes for identity request
+ *
+ * @param con_handle the connection handle
+ * @param url the url
+ * @param cls the RequestHandle
+ */
+static void
+list_attribute_cont (struct GNUNET_REST_RequestHandle *con_handle,
+ const char* url,
+ void *cls)
+{
+ const struct GNUNET_CRYPTO_EcdsaPrivateKey *priv_key;
+ struct RequestHandle *handle = cls;
+ struct EgoEntry *ego_entry;
+ char *identity;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Getting attributes for %s.\n",
+ handle->url);
+ if ( strlen (GNUNET_REST_API_NS_RECLAIM_ATTRIBUTES) >=
+ strlen (handle->url))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "No identity given.\n");
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ return;
+ }
+ identity = handle->url + strlen (GNUNET_REST_API_NS_RECLAIM_ATTRIBUTES) + 1;
+
+ for (ego_entry = handle->ego_head;
+ NULL != ego_entry;
+ ego_entry = ego_entry->next)
+ if (0 == strcmp (identity, ego_entry->identifier))
+ break;
+ handle->resp_object = json_array ();
+
+
+ if (NULL == ego_entry)
+ {
+ //Done
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Ego %s not found.\n",
+ identity);
+ GNUNET_SCHEDULER_add_now (&return_response, handle);
+ return;
+ }
+ priv_key = GNUNET_IDENTITY_ego_get_private_key (ego_entry->ego);
+ handle->idp = GNUNET_RECLAIM_connect (cfg);
+ handle->attr_it = GNUNET_RECLAIM_get_attributes_start (handle->idp,
+ priv_key,
+ &collect_error_cb,
+ handle,
+ &attr_collect,
+ handle,
+ &collect_finished_cb,
+ handle);
+}
+
+
+static void
+revoke_ticket_cont (struct GNUNET_REST_RequestHandle *con_handle,
+ const char* url,
+ void *cls)
+{
+ const struct GNUNET_CRYPTO_EcdsaPrivateKey *identity_priv;
+ struct RequestHandle *handle = cls;
+ struct EgoEntry *ego_entry;
+ struct GNUNET_RECLAIM_Ticket *ticket;
+ struct GNUNET_CRYPTO_EcdsaPublicKey tmp_pk;
+ char term_data[handle->rest_handle->data_size+1];
+ json_t *data_json;
+ json_error_t err;
+ struct GNUNET_JSON_Specification tktspec[] = {
+ GNUNET_RECLAIM_JSON_spec_ticket (&ticket),
+ GNUNET_JSON_spec_end()
+ };
+
+ if (0 >= handle->rest_handle->data_size)
+ {
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ return;
+ }
+
+ term_data[handle->rest_handle->data_size] = '\0';
+ GNUNET_memcpy (term_data,
+ handle->rest_handle->data,
+ handle->rest_handle->data_size);
+ data_json = json_loads (term_data,
+ JSON_DECODE_ANY,
+ &err);
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_JSON_parse (data_json, tktspec,
+ NULL, NULL));
+ json_decref (data_json);
+ if (NULL == ticket)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Unable to parse ticket from %s\n",
+ term_data);
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ return;
+ }
+ if (GNUNET_OK != GNUNET_JSON_parse (data_json,
+ tktspec,
+ NULL, NULL))
+ {
+ handle->emsg = GNUNET_strdup ("Not a ticket!\n");
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ GNUNET_JSON_parse_free (tktspec);
+ json_decref (data_json);
+ return;
+ }
+
+ for (ego_entry = handle->ego_head;
+ NULL != ego_entry;
+ ego_entry = ego_entry->next)
+ {
+ GNUNET_IDENTITY_ego_get_public_key (ego_entry->ego,
+ &tmp_pk);
+ if (0 == memcmp (&ticket->identity,
+ &tmp_pk,
+ sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey)))
+ break;
+ }
+ if (NULL == ego_entry)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Identity unknown\n");
+ GNUNET_JSON_parse_free (tktspec);
+ return;
+ }
+ identity_priv = GNUNET_IDENTITY_ego_get_private_key (ego_entry->ego);
+
+ handle->idp = GNUNET_RECLAIM_connect (cfg);
+ handle->idp_op = GNUNET_RECLAIM_ticket_revoke (handle->idp,
+ identity_priv,
+ ticket,
+ &finished_cont,
+ handle);
+ GNUNET_JSON_parse_free (tktspec);
+}
+
+static void
+consume_cont (void *cls,
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *identity,
+ const struct GNUNET_RECLAIM_ATTRIBUTE_Claim *attr)
+{
+ struct RequestHandle *handle = cls;
+ char *val_str;
+ json_t *value;
+
+ if (NULL == identity)
+ {
+ GNUNET_SCHEDULER_add_now (&return_response, handle);
+ return;
+ }
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Adding attribute: %s\n",
+ attr->name);
+ val_str = GNUNET_RECLAIM_ATTRIBUTE_value_to_string (attr->type,
+ attr->data,
+ attr->data_size);
+ if (NULL == val_str)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to parse value for: %s\n",
+ attr->name);
+ return;
+ }
+ value = json_string(val_str);
+ json_object_set_new (handle->resp_object,
+ attr->name,
+ value);
+ json_decref (value);
+ GNUNET_free (val_str);
+}
+
+static void
+consume_ticket_cont (struct GNUNET_REST_RequestHandle *con_handle,
+ const char* url,
+ void *cls)
+{
+ const struct GNUNET_CRYPTO_EcdsaPrivateKey *identity_priv;
+ struct RequestHandle *handle = cls;
+ struct EgoEntry *ego_entry;
+ struct GNUNET_RECLAIM_Ticket *ticket;
+ struct GNUNET_CRYPTO_EcdsaPublicKey tmp_pk;
+ char term_data[handle->rest_handle->data_size+1];
+ json_t *data_json;
+ json_error_t err;
+ struct GNUNET_JSON_Specification tktspec[] = {
+ GNUNET_RECLAIM_JSON_spec_ticket (&ticket),
+ GNUNET_JSON_spec_end ()
+ };
+
+ if (0 >= handle->rest_handle->data_size)
+ {
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ return;
+ }
+
+ term_data[handle->rest_handle->data_size] = '\0';
+ GNUNET_memcpy (term_data,
+ handle->rest_handle->data,
+ handle->rest_handle->data_size);
+ data_json = json_loads (term_data,
+ JSON_DECODE_ANY,
+ &err);
+ if (NULL == data_json)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Unable to parse JSON Object from %s\n",
+ term_data);
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ return;
+ }
+ if (GNUNET_OK != GNUNET_JSON_parse (data_json,
+ tktspec,
+ NULL, NULL))
+ {
+ handle->emsg = GNUNET_strdup ("Not a ticket!\n");
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ GNUNET_JSON_parse_free(tktspec);
+ json_decref (data_json);
+ return;
+ }
+ for (ego_entry = handle->ego_head;
+ NULL != ego_entry;
+ ego_entry = ego_entry->next)
+ {
+ GNUNET_IDENTITY_ego_get_public_key (ego_entry->ego,
+ &tmp_pk);
+ if (0 == memcmp (&ticket->audience,
+ &tmp_pk,
+ sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey)))
+ break;
+ }
+ if (NULL == ego_entry)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Identity unknown\n");
+ GNUNET_JSON_parse_free (tktspec);
+ return;
+ }
+ identity_priv = GNUNET_IDENTITY_ego_get_private_key (ego_entry->ego);
+ handle->resp_object = json_object ();
+ handle->idp = GNUNET_RECLAIM_connect (cfg);
+ handle->idp_op = GNUNET_RECLAIM_ticket_consume (handle->idp,
+ identity_priv,
+ ticket,
+ &consume_cont,
+ handle);
+ GNUNET_JSON_parse_free (tktspec);
+}
+
+
+
+/**
+ * Respond to OPTIONS request
+ *
+ * @param con_handle the connection handle
+ * @param url the url
+ * @param cls the RequestHandle
+ */
+static void
+options_cont (struct GNUNET_REST_RequestHandle *con_handle,
+ const char* url,
+ void *cls)
+{
+ struct MHD_Response *resp;
+ struct RequestHandle *handle = cls;
+
+ //For now, independent of path return all options
+ resp = GNUNET_REST_create_response (NULL);
+ MHD_add_response_header (resp,
+ "Access-Control-Allow-Methods",
+ allow_methods);
+ handle->proc (handle->proc_cls, resp, MHD_HTTP_OK);
+ cleanup_handle (handle);
+ return;
+}
+
+/**
+ * Handle rest request
+ *
+ * @param handle the request handle
+ */
+static void
+init_cont (struct RequestHandle *handle)
+{
+ struct GNUNET_REST_RequestHandlerError err;
+ static const struct GNUNET_REST_RequestHandler handlers[] = {
+ {MHD_HTTP_METHOD_GET, GNUNET_REST_API_NS_RECLAIM_ATTRIBUTES, &list_attribute_cont},
+ {MHD_HTTP_METHOD_POST, GNUNET_REST_API_NS_RECLAIM_ATTRIBUTES, &add_attribute_cont},
+ {MHD_HTTP_METHOD_GET, GNUNET_REST_API_NS_IDENTITY_TICKETS, &list_tickets_cont},
+ {MHD_HTTP_METHOD_POST, GNUNET_REST_API_NS_IDENTITY_REVOKE, &revoke_ticket_cont},
+ {MHD_HTTP_METHOD_POST, GNUNET_REST_API_NS_IDENTITY_CONSUME, &consume_ticket_cont},
+ {MHD_HTTP_METHOD_OPTIONS, GNUNET_REST_API_NS_RECLAIM,
+ &options_cont},
+ GNUNET_REST_HANDLER_END
+ };
+
+ if (GNUNET_NO == GNUNET_REST_handle_request (handle->rest_handle,
+ handlers,
+ &err,
+ handle))
+ {
+ handle->response_code = err.error_code;
+ GNUNET_SCHEDULER_add_now (&do_error, handle);
+ }
+}
+
+/**
+ * If listing is enabled, prints information about the egos.
+ *
+ * This function is initially called for all egos and then again
+ * whenever a ego's identifier changes or if it is deleted. At the
+ * end of the initial pass over all egos, the function is once called
+ * with 'NULL' for 'ego'. That does NOT mean that the callback won't
+ * be invoked in the future or that there was an error.
+ *
+ * When used with 'GNUNET_IDENTITY_create' or 'GNUNET_IDENTITY_get',
+ * this function is only called ONCE, and 'NULL' being passed in
+ * 'ego' does indicate an error (i.e. name is taken or no default
+ * value is known). If 'ego' is non-NULL and if '*ctx'
+ * is set in those callbacks, the value WILL be passed to a subsequent
+ * call to the identity callback of 'GNUNET_IDENTITY_connect' (if
+ * that one was not NULL).
+ *
+ * When an identity is renamed, this function is called with the
+ * (known) ego but the NEW identifier.
+ *
+ * When an identity is deleted, this function is called with the
+ * (known) ego and "NULL" for the 'identifier'. In this case,
+ * the 'ego' is henceforth invalid (and the 'ctx' should also be
+ * cleaned up).
+ *
+ * @param cls closure
+ * @param ego ego handle
+ * @param ctx context for application to store data for this ego
+ * (during the lifetime of this process, initially NULL)
+ * @param identifier identifier assigned by the user for this ego,
+ * NULL if the user just deleted the ego and it
+ * must thus no longer be used
+ */
+static void
+list_ego (void *cls,
+ struct GNUNET_IDENTITY_Ego *ego,
+ void **ctx,
+ const char *identifier)
+{
+ struct RequestHandle *handle = cls;
+ struct EgoEntry *ego_entry;
+ struct GNUNET_CRYPTO_EcdsaPublicKey pk;
+
+ if ((NULL == ego) && (ID_REST_STATE_INIT == handle->state))
+ {
+ handle->state = ID_REST_STATE_POST_INIT;
+ init_cont (handle);
+ return;
+ }
+ if (ID_REST_STATE_INIT == handle->state) {
+ ego_entry = GNUNET_new (struct EgoEntry);
+ GNUNET_IDENTITY_ego_get_public_key (ego, &pk);
+ ego_entry->keystring =
+ GNUNET_CRYPTO_ecdsa_public_key_to_string (&pk);
+ ego_entry->ego = ego;
+ ego_entry->identifier = GNUNET_strdup (identifier);
+ GNUNET_CONTAINER_DLL_insert_tail(handle->ego_head,handle->ego_tail, ego_entry);
+ }
+
+}
+
+static void
+rest_identity_process_request(struct GNUNET_REST_RequestHandle *rest_handle,
+ GNUNET_REST_ResultProcessor proc,
+ void *proc_cls)
+{
+ struct RequestHandle *handle = GNUNET_new (struct RequestHandle);
+ handle->response_code = 0;
+ handle->timeout = GNUNET_TIME_UNIT_FOREVER_REL;
+ handle->proc_cls = proc_cls;
+ handle->proc = proc;
+ handle->state = ID_REST_STATE_INIT;
+ handle->rest_handle = rest_handle;
+
+ handle->url = GNUNET_strdup (rest_handle->url);
+ if (handle->url[strlen (handle->url)-1] == '/')
+ handle->url[strlen (handle->url)-1] = '\0';
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Connecting...\n");
+ handle->identity_handle = GNUNET_IDENTITY_connect (cfg,
+ &list_ego,
+ handle);
+ handle->namestore_handle = GNUNET_NAMESTORE_connect (cfg);
+ handle->timeout_task =
+ GNUNET_SCHEDULER_add_delayed (handle->timeout,
+ &do_timeout,
+ handle);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Connected\n");
+}
+
+/**
+ * Entry point for the plugin.
+ *
+ * @param cls Config info
+ * @return NULL on error, otherwise the plugin context
+ */
+void *
+libgnunet_plugin_rest_reclaim_init (void *cls)
+{
+ static struct Plugin plugin;
+ struct GNUNET_REST_Plugin *api;
+
+ cfg = cls;
+ if (NULL != plugin.cfg)
+ return NULL; /* can only initialize once! */
+ memset (&plugin, 0, sizeof (struct Plugin));
+ plugin.cfg = cfg;
+ api = GNUNET_new (struct GNUNET_REST_Plugin);
+ api->cls = &plugin;
+ api->name = GNUNET_REST_API_NS_RECLAIM;
+ api->process_request = &rest_identity_process_request;
+ GNUNET_asprintf (&allow_methods,
+ "%s, %s, %s, %s, %s",
+ MHD_HTTP_METHOD_GET,
+ MHD_HTTP_METHOD_POST,
+ MHD_HTTP_METHOD_PUT,
+ MHD_HTTP_METHOD_DELETE,
+ MHD_HTTP_METHOD_OPTIONS);
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ _("Identity Provider REST API initialized\n"));
+ return api;
+}
+
+
+/**
+ * Exit point from the plugin.
+ *
+ * @param cls the plugin context (as returned by "init")
+ * @return always NULL
+ */
+void *
+libgnunet_plugin_rest_reclaim_done (void *cls)
+{
+ struct GNUNET_REST_Plugin *api = cls;
+ struct Plugin *plugin = api->cls;
+ plugin->cfg = NULL;
+
+ GNUNET_free_non_null (allow_methods);
+ GNUNET_free (api);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Identity Provider REST plugin is finished\n");
+ return NULL;
+}
+
+/* end of plugin_rest_reclaim.c */