From 2a33ef2344145e12f1eea96214cdb317857321c1 Mon Sep 17 00:00:00 2001
From: Uros Majstorovic <majstor@majstor.org>
Date: Tue, 31 Aug 2021 22:20:15 +0200
Subject: directory service added

---
 ecp/src/dir_srv.c | 82 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 ecp/src/dir_srv.c

(limited to 'ecp/src/dir_srv.c')

diff --git a/ecp/src/dir_srv.c b/ecp/src/dir_srv.c
new file mode 100644
index 0000000..7513c4a
--- /dev/null
+++ b/ecp/src/dir_srv.c
@@ -0,0 +1,82 @@
+#include "core.h"
+#include "cr.h"
+
+#include "dir.h"
+
+#ifdef ECP_WITH_DIRSRV
+
+int ecp_dir_init(ECPContext *ctx, ECPDirList *dir_online, ECPDirList *dir_shadow) {
+    ctx->dir_online = dir_online;
+    ctx->dir_shadow = dir_shadow;
+
+    return ECP_OK;
+}
+
+int ecp_dir_update(ECPDirList *list, ECPDirItem *item) {
+    int i;
+
+    for (i=0; i<list->count; i++) {
+        if (memcmp(ecp_cr_dh_pub_get_buf(&list->item[i].node.public), ecp_cr_dh_pub_get_buf(&item->node.public), ECP_ECDH_SIZE_KEY) == 0) {
+            return ECP_OK;
+        }
+    }
+
+    if (list->count == ECP_MAX_DIR_ITEM) return ECP_ERR_SIZE;
+
+    list->item[list->count] = *item;
+    list->count++;
+
+    return ECP_OK;
+}
+
+ssize_t ecp_dir_handle_update(ECPConnection *conn, ecp_seq_t seq, unsigned char mtype, unsigned char *msg, ssize_t size, ECP2Buffer *b) {
+    ECPContext *ctx = conn->sock->ctx;
+    ECPDirList *dir_shadow = ctx->dir_shadow;
+    ECPDirItem item;
+    size_t _size;
+
+    _size = size;
+    if (mtype == ECP_MTYPE_DIR_REQ) {
+        int rv;
+
+        while (_size >= ECP_SIZE_DIR_ITEM) {
+            ecp_dir_parse_item(msg, &item);
+
+            rv = ecp_dir_update(dir_shadow, &item);
+            if (rv) return rv;
+
+            msg += ECP_SIZE_DIR_ITEM;
+            _size -= ECP_SIZE_DIR_ITEM;
+        };
+    }
+
+    return size - _size;
+}
+
+int ecp_dir_handle_req(ECPSocket *sock, ECPNetAddr *addr, ECPConnection *parent, unsigned char *msg, size_t msg_size, ECPPktMeta *pkt_meta, ECP2Buffer *bufs, ECPConnection **_conn) {
+    ECPContext *ctx = sock->ctx;
+    ECPBuffer *packet = bufs->packet;
+    ECPBuffer *payload = bufs->payload;
+    ECPDirList *dir_online = ctx->dir_online;
+    ssize_t rv;
+    int i;
+
+    ecp_pld_set_type(payload->buffer, payload->size, ECP_MTYPE_DIR_REP);
+    msg = ecp_pld_get_buf(payload->buffer, payload->size);
+    msg_size = payload->size - (msg - payload->buffer);
+
+    for (i=0; i<dir_online->count; i++) {
+        if (msg_size < ECP_SIZE_DIR_ITEM) return ECP_ERR_SIZE;
+
+        ecp_dir_serialize_item(msg, &dir_online->item[i]);
+        msg += ECP_SIZE_DIR_ITEM;
+        msg_size -= ECP_SIZE_DIR_ITEM;
+    }
+
+    rv = ecp_pld_send_tr(sock, addr, parent, packet, pkt_meta, payload, ECP_SIZE_PLD(i * ECP_SIZE_DIR_ITEM, ECP_MTYPE_DIR_REP), 0);
+    if (rv < 0) return rv;
+
+    return ECP_OK;
+}
+
+#endif  /* ECP_WITH_DIRSRV */
\ No newline at end of file
-- 
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