get peer pubkey api

4 files changed, 48 insertions, 0 deletions

diff --git a/toxcore/group.c b/toxcore/group.c
index 1a17e83a..329a9709 100644
--- a/toxcore/group.c
+++ b/toxcore/group.c
@@ -722,6 +722,26 @@ int del_groupchat(Group_Chats *g_c, int groupnumber)
     return wipe_group_chat(g_c, groupnumber);
 }
 
+/* Copy the public key of peernumber who is in groupnumber to pk.
+ * pk must be crypto_box_PUBLICKEYBYTES long.
+ *
+ * returns 0 on success
+ * returns -1 on failure
+ */
+int group_peer_pubkey(const Group_Chats *g_c, int groupnumber, int peernumber, uint8_t *pk)
+{
+    Group_c *g = get_group_c(g_c, groupnumber);
+
+    if (!g)
+        return -1;
+
+    if ((uint32_t)peernumber >= g->numpeers)
+        return -1;
+
+    memcpy(pk, g->group[peernumber].real_pk, crypto_box_PUBLICKEYBYTES);
+    return 0;
+}
+
 /* Copy the name of peernumber who is in groupnumber to name.
  * name must be at least MAX_NAME_LENGTH long.
  *
diff --git a/toxcore/group.h b/toxcore/group.h
index f4d93c9a..8ae0e40e 100644
--- a/toxcore/group.h
+++ b/toxcore/group.h
@@ -192,6 +192,14 @@ int add_groupchat(Group_Chats *g_c, uint8_t type);
  */
 int del_groupchat(Group_Chats *g_c, int groupnumber);
 
+/* Copy the public key of peernumber who is in groupnumber to pk.
+ * pk must be crypto_box_PUBLICKEYBYTES long.
+ *
+ * returns 0 on success
+ * returns -1 on failure
+ */
+int group_peer_pubkey(const Group_Chats *g_c, int groupnumber, int peernumber, uint8_t *pk);
+
 /* Copy the name of peernumber who is in groupnumber to name.
  * name must be at least MAX_NAME_LENGTH long.
  *
diff --git a/toxcore/tox.c b/toxcore/tox.c
index f73ac285..933f0f71 100644
--- a/toxcore/tox.c
+++ b/toxcore/tox.c
@@ -641,6 +641,18 @@ int tox_group_peername(const Tox *tox, int groupnumber, int peernumber, uint8_t
     return group_peername(m->group_chat_object, groupnumber, peernumber, name);
 }
 
+/* Copy the public key of peernumber who is in groupnumber to pk.
+ * pk must be TOX_CLIENT_ID_SIZE long.
+ *
+ * returns 0 on success
+ * returns -1 on failure
+ */
+int tox_group_peer_pubkey(const Tox *tox, int groupnumber, int peernumber, uint8_t *pk)
+{
+    const Messenger *m = tox;
+    return group_peer_pubkey(m->group_chat_object, groupnumber, peernumber, pk);
+}
+
 /* invite friendnumber to groupnumber
  * return 0 on success
  * return -1 on failure
diff --git a/toxcore/tox.h b/toxcore/tox.h
index 4caf4d26..5f3204e4 100644
--- a/toxcore/tox.h
+++ b/toxcore/tox.h
@@ -496,6 +496,14 @@ int tox_del_groupchat(Tox *tox, int groupnumber);
  */
 int tox_group_peername(const Tox *tox, int groupnumber, int peernumber, uint8_t *name);
 
+/* Copy the public key of peernumber who is in groupnumber to pk.
+ * pk must be TOX_CLIENT_ID_SIZE long.
+ *
+ * returns 0 on success
+ * returns -1 on failure
+ */
+int tox_group_peer_pubkey(const Tox *tox, int groupnumber, int peernumber, uint8_t *pk);
+
 /* invite friendnumber to groupnumber
  * return 0 on success
  * return -1 on failure