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Diffstat (limited to 'src/lib/serdes-irm.c')
-rw-r--r--src/lib/serdes-irm.c478
1 files changed, 478 insertions, 0 deletions
diff --git a/src/lib/serdes-irm.c b/src/lib/serdes-irm.c
new file mode 100644
index 00000000..c4ba3053
--- /dev/null
+++ b/src/lib/serdes-irm.c
@@ -0,0 +1,478 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2024
+ *
+ * Ouroboros IRM Protocol - serialization/deserialization
+ *
+ * Dimitri Staessens <dimitri@ouroboros.rocks>
+ * Sander Vrijders <sander@ouroboros.rocks>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., http://www.fsf.org/about/contact/.
+ */
+
+#define _POSIX_C_SOURCE 200809L
+
+#include "config.h"
+
+#include <ouroboros/errno.h>
+#include <ouroboros/serdes-irm.h>
+#include <ouroboros/protobuf.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+int flow_accept__irm_req_ser(buffer_t * buf,
+ const struct flow_info * flow,
+ const struct timespec * timeo)
+{
+ irm_msg_t * msg;
+ size_t len;
+
+ msg = malloc(sizeof(*msg));
+ if (msg == NULL)
+ goto fail_malloc;
+
+ irm_msg__init(msg);
+
+ msg->code = IRM_MSG_CODE__IRM_FLOW_ACCEPT;
+ msg->flow_info = flow_info_s_to_msg(flow);
+ if (msg->flow_info == NULL)
+ goto fail_msg;
+
+ msg->timeo = timeo == NULL ? NULL : timespec_s_to_msg(timeo);
+ if (timeo != NULL && msg->timeo == NULL)
+ goto fail_msg;
+
+ len = irm_msg__get_packed_size(msg);
+ if (len == 0 || len > buf->len)
+ goto fail_msg;
+
+ buf->len = len;
+
+ irm_msg__pack(msg, buf->data);
+ irm_msg__free_unpacked(msg, NULL);
+
+ return 0;
+
+ fail_msg:
+ irm_msg__free_unpacked(msg, NULL);
+ fail_malloc:
+ return -ENOMEM;
+}
+
+static int __flow_alloc_ser(buffer_t * buf,
+ const struct flow_info * flow,
+ const char * dst,
+ const struct timespec * timeo,
+ int msg_code)
+{
+ irm_msg_t * msg;
+ size_t len;
+
+ msg = malloc(sizeof(*msg));
+ if (msg == NULL)
+ goto fail_malloc;
+
+ irm_msg__init(msg);
+
+ msg->code = msg_code;
+ msg->flow_info = flow_info_s_to_msg(flow);
+ if (msg->flow_info == NULL)
+ goto fail_msg;
+
+ msg->dst = strdup(dst);
+ if (msg->dst == NULL)
+ goto fail_msg;
+
+ msg->timeo = timeo == NULL ? NULL : timespec_s_to_msg(timeo);
+ if (timeo != NULL && msg->timeo == NULL)
+ goto fail_msg;
+
+ len = irm_msg__get_packed_size(msg);
+ if (len == 0 || len > buf->len)
+ goto fail_msg;
+
+ buf->len = len;
+
+ irm_msg__pack(msg, buf->data);
+ irm_msg__free_unpacked(msg, NULL);
+
+ return 0;
+
+ fail_msg:
+ irm_msg__free_unpacked(msg, NULL);
+ fail_malloc:
+ return -ENOMEM;
+}
+
+int flow_alloc__irm_req_ser(buffer_t * buf,
+ const struct flow_info * flow,
+ const char * dst,
+ const struct timespec * timeo)
+{
+ return __flow_alloc_ser(buf, flow, dst, timeo,
+ IRM_MSG_CODE__IRM_FLOW_ALLOC);
+}
+
+int flow_join__irm_req_ser(buffer_t * buf,
+ const struct flow_info * flow,
+ const char * dst,
+ const struct timespec * timeo)
+{
+ return __flow_alloc_ser(buf, flow, dst, timeo,
+ IRM_MSG_CODE__IRM_FLOW_JOIN);
+}
+
+int flow__irm_result_des(buffer_t * buf,
+ struct flow_info * flow,
+ buffer_t * sk)
+{
+ irm_msg_t * msg;
+ int err;
+
+ if (sk != NULL)
+ sk->data = NULL;
+
+ msg = irm_msg__unpack(NULL, buf->len, buf->data);
+ if (msg == NULL) {
+ err = -EIRMD;
+ goto fail_msg;
+ }
+
+ if (!msg->has_result) {
+ err = -EIRMD;
+ goto fail;
+ }
+
+ if (msg->result < 0) {
+ err = msg->result;
+ goto fail;
+ }
+
+ if (msg->flow_info == NULL) {
+ err = -EBADF;
+ goto fail;
+ }
+
+ *flow = flow_info_msg_to_s(msg->flow_info);
+
+ if (flow->qs.cypher_s > 0 && sk != NULL) {
+ if (msg->symmkey.data == NULL || msg->symmkey.len == 0) {
+ err = -ECRYPT;
+ goto fail;
+ }
+
+ sk->len = msg->symmkey.len;
+ sk->data = msg->symmkey.data;
+
+ msg->symmkey.data = NULL;
+ msg->symmkey.len = 0;
+ }
+
+ irm_msg__free_unpacked(msg, NULL);
+
+ return 0;
+ fail:
+ irm_msg__free_unpacked(msg, NULL);
+ fail_msg:
+ return err;
+}
+
+int flow_dealloc__irm_req_ser(buffer_t * buf,
+ const struct flow_info * flow,
+ const struct timespec * timeo)
+{
+ irm_msg_t * msg;
+ size_t len;
+
+ msg = malloc(sizeof(*msg));
+ if (msg == NULL)
+ goto fail_malloc;
+
+ irm_msg__init(msg);
+
+ msg->code = IRM_MSG_CODE__IRM_FLOW_DEALLOC;
+ msg->flow_info = flow_info_s_to_msg(flow);
+ if (msg->flow_info == NULL)
+ goto fail_msg;
+
+ msg->timeo = timespec_s_to_msg(timeo);
+ if (msg->timeo == NULL)
+ goto fail_msg;
+
+ len = irm_msg__get_packed_size(msg);
+ if (len == 0 || len > buf->len)
+ goto fail_msg;
+
+ buf->len = len;
+
+ irm_msg__pack(msg, buf->data);
+ irm_msg__free_unpacked(msg, NULL);
+
+ return 0;
+
+ fail_msg:
+ irm_msg__free_unpacked(msg, NULL);
+ fail_malloc:
+ return -ENOMEM;
+}
+
+int ipcp_flow_dealloc__irm_req_ser(buffer_t * buf,
+ const struct flow_info * flow)
+{
+ irm_msg_t * msg;
+ size_t len;
+
+ msg = malloc(sizeof(*msg));
+ if (msg == NULL)
+ goto fail_malloc;
+
+ irm_msg__init(msg);
+
+ msg->code = IRM_MSG_CODE__IPCP_FLOW_DEALLOC;
+ msg->flow_info = flow_info_s_to_msg(flow);
+ if (msg->flow_info == NULL)
+ goto fail_msg;
+
+ len = irm_msg__get_packed_size(msg);
+ if (len == 0 || len > buf->len)
+ goto fail_msg;
+
+ buf->len = len;
+
+ irm_msg__pack(msg, buf->data);
+ irm_msg__free_unpacked(msg, NULL);
+
+ return 0;
+ fail_msg:
+ irm_msg__free_unpacked(msg, NULL);
+ fail_malloc:
+ return -ENOMEM;
+}
+
+
+int ipcp_create_r__irm_req_ser(buffer_t * buf,
+ const struct ipcp_info * ipcp)
+{
+ irm_msg_t * msg;
+ size_t len;
+
+ msg = malloc(sizeof(*msg));
+ if (msg == NULL)
+ goto fail_malloc;
+
+ irm_msg__init(msg);
+
+ msg->code = IRM_MSG_CODE__IPCP_CREATE_R;
+ msg->ipcp_info = ipcp_info_s_to_msg(ipcp);
+ if (msg->ipcp_info == NULL)
+ goto fail_msg;
+
+ len = irm_msg__get_packed_size(msg);
+ if (len == 0 || len > buf->len)
+ goto fail_msg;
+
+ buf->len = len;
+
+ irm_msg__pack(msg, buf->data);
+ irm_msg__free_unpacked(msg, NULL);
+
+ return 0;
+ fail_msg:
+ irm_msg__free_unpacked(msg, NULL);
+ fail_malloc:
+ return -ENOMEM;
+}
+
+int proc_announce__irm_req_ser(buffer_t * buf,
+ const char * prog)
+{
+ irm_msg_t * msg;
+ size_t len;
+
+ msg = malloc(sizeof(*msg));
+ if (msg == NULL)
+ goto fail_malloc;
+
+ irm_msg__init(msg);
+
+ msg->code = IRM_MSG_CODE__IRM_PROC_ANNOUNCE;
+ msg->has_pid = true;
+ msg->pid = getpid();
+ msg->prog = strdup(prog);
+ if (msg->prog == NULL)
+ goto fail_msg;
+
+ len = irm_msg__get_packed_size(msg);
+ if (len == 0 || len > buf->len)
+ goto fail_msg;
+
+ buf->len = len;
+
+ irm_msg__pack(msg, buf->data);
+ irm_msg__free_unpacked(msg, NULL);
+
+ return 0;
+ fail_msg:
+ irm_msg__free_unpacked(msg, NULL);
+ fail_malloc:
+ return -ENOMEM;
+}
+
+int proc_exit__irm_req_ser(buffer_t * buf)
+{
+ irm_msg_t * msg;
+ size_t len;
+
+ msg = malloc(sizeof(*msg));
+ if (msg == NULL)
+ goto fail_malloc;
+
+ irm_msg__init(msg);
+
+ msg->code = IRM_MSG_CODE__IRM_PROC_EXIT;
+ msg->has_pid = true;
+ msg->pid = getpid();
+
+ len = irm_msg__get_packed_size(msg);
+ if (len == 0 || len > buf->len)
+ goto fail_msg;
+
+ buf->len = len;
+
+ irm_msg__pack(msg, buf->data);
+ irm_msg__free_unpacked(msg, NULL);
+
+ return 0;
+ fail_msg:
+ irm_msg__free_unpacked(msg, NULL);
+ fail_malloc:
+ return -ENOMEM;
+}
+
+int ipcp_flow_req_arr__irm_req_ser(buffer_t * buf,
+ const buffer_t * dst,
+ const struct flow_info * flow,
+ const buffer_t * data)
+{
+ irm_msg_t * msg;
+ size_t len;
+
+ msg = malloc(sizeof(*msg));
+ if (msg == NULL)
+ goto fail_malloc;
+
+ irm_msg__init(msg);
+
+ msg->code = IRM_MSG_CODE__IPCP_FLOW_REQ_ARR;
+ msg->flow_info = flow_info_s_to_msg(flow);
+ if (msg->flow_info == NULL)
+ goto fail_msg;
+
+ msg->has_hash = true;
+ msg->hash.len = dst->len;
+ msg->hash.data = dst->data;
+ msg->has_pk = true;
+ msg->pk.len = data->len;
+ msg->pk.data = data->data;
+
+ len = irm_msg__get_packed_size(msg);
+ if (len == 0 || len > buf->len)
+ goto fail_msg;
+
+ buf->len = len;
+
+ irm_msg__pack(msg, buf->data);
+
+ /* Don't free * dst or data! */
+ msg->hash.len = 0;
+ msg->hash.data = NULL;
+ msg->pk.len = 0;
+ msg->pk.data = NULL;
+ irm_msg__free_unpacked(msg, NULL);
+
+ return 0;
+ fail_msg:
+ irm_msg__free_unpacked(msg, NULL);
+ fail_malloc:
+ return -ENOMEM;
+}
+
+int ipcp_flow_alloc_reply__irm_msg_ser(buffer_t * buf,
+ const struct flow_info * flow,
+ int response,
+ const buffer_t * data)
+{
+ irm_msg_t * msg;
+ size_t len;
+
+ msg = malloc(sizeof(*msg));
+ if (msg == NULL)
+ goto fail_malloc;
+
+ irm_msg__init(msg);
+
+ msg->code = IRM_MSG_CODE__IPCP_FLOW_ALLOC_REPLY;
+ msg->flow_info = flow_info_s_to_msg(flow);
+ if (msg->flow_info == NULL)
+ goto fail_msg;
+
+ msg->has_pk = true;
+ msg->pk.len = data->len;
+ msg->pk.data = data->data;
+ msg->has_response = true;
+ msg->response = response;
+
+ len = irm_msg__get_packed_size(msg);
+ if (len == 0 || len > buf->len)
+ goto fail_msg;
+
+ buf->len = len;
+
+ irm_msg__pack(msg, buf->data);
+
+ /* Don't free * data! */
+ msg->pk.len = 0;
+ msg->pk.data = NULL;
+
+ irm_msg__free_unpacked(msg, NULL);
+
+ return 0;
+ fail_msg:
+ irm_msg__free_unpacked(msg, NULL);
+ fail_malloc:
+ return -ENOMEM;
+}
+
+int irm__irm_result_des(buffer_t * buf)
+{
+ irm_msg_t * msg;
+ int err;
+
+ msg = irm_msg__unpack(NULL, buf->len, buf->data);
+ if (msg == NULL) {
+ err = -EIRMD;
+ goto fail_msg;
+ }
+
+ if (!msg->has_result) {
+ err = -EIRMD;
+ goto fail;
+ }
+
+ err = msg->result;
+ fail:
+ irm_msg__free_unpacked(msg, NULL);
+ fail_msg:
+ return err;
+}
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