Merge branch 'group-chat'

12 files changed, 270 insertions, 173 deletions

diff --git a/auto_tests/messenger_test.c b/auto_tests/messenger_test.c
index dc1625a3..f749f6cb 100644
--- a/auto_tests/messenger_test.c
+++ b/auto_tests/messenger_test.c
@@ -239,12 +239,14 @@ START_TEST(test_dht_state_saveloadsave)
     memset(buffer, 0xCD, extra);
     memset(buffer + extra + size, 0xCD, extra);
     DHT_save(m->dht, buffer + extra);
-    for(i = 0; i < extra; i++) {
+
+    for (i = 0; i < extra; i++) {
         ck_assert_msg(buffer[i] == 0xCD, "Buffer underwritten from DHT_save() @%u", i);
         ck_assert_msg(buffer[extra + size + i] == 0xCD, "Buffer overwritten from DHT_save() @%u", i);
     }
 
     int res = DHT_load_new(m->dht, buffer + extra, size);
+
     if (res == -1)
         ck_assert_msg(res == 0, "Failed to load back stored buffer: res == -1");
     else {
@@ -279,12 +281,14 @@ START_TEST(test_messenger_state_saveloadsave)
     memset(buffer, 0xCD, extra);
     memset(buffer + extra + size, 0xCD, extra);
     Messenger_save(m, buffer + extra);
-    for(i = 0; i < extra; i++) {
+
+    for (i = 0; i < extra; i++) {
         ck_assert_msg(buffer[i] == 0xCD, "Buffer underwritten from Messenger_save() @%u", i);
         ck_assert_msg(buffer[extra + size + i] == 0xCD, "Buffer overwritten from Messenger_save() @%u", i);
     }
 
     int res = Messenger_load(m, buffer + extra, size);
+
     if (res == -1)
         ck_assert_msg(res == 0, "Failed to load back stored buffer: res == -1");
     else {
diff --git a/auto_tests/network_test.c b/auto_tests/network_test.c
index 593b1f40..8d2a12d9 100644
--- a/auto_tests/network_test.c
+++ b/auto_tests/network_test.c
@@ -1,154 +1,154 @@
-#ifdef HAVE_CONFIG_H

-#include "config.h"

-#endif

-

-#include <sys/types.h>

-#include <stdint.h>

-#include <string.h>

-#include <check.h>

-#include <stdlib.h>

-#include <time.h>

-

-#include "../toxcore/network.h"

-

-START_TEST(test_addr_resolv_localhost)

-{

-#ifdef __CYGWIN__

-    /* force initialization of network stack

-     * normally this should happen automatically

-     * cygwin doesn't do it for every network related function though

-     * e.g. not for getaddrinfo... */

-    socket(0, 0, 0);

-    errno = 0;

-#endif

-

-    const char localhost[] = "localhost";

-

-    IP ip;

-    ip_init(&ip, 0);

-

-    int res = addr_resolve(localhost, &ip, NULL);

-

-    ck_assert_msg(res > 0, "Resolver failed: %u, %s (%x, %x)", errno, strerror(errno));

-

-    if (res > 0) {

-        ck_assert_msg(ip.family == AF_INET, "Expected family AF_INET, got %u.", ip.family);

-        ck_assert_msg(ip.ip4.uint32 == htonl(0x7F000001), "Expected 127.0.0.1, got %s.", inet_ntoa(ip.ip4.in_addr));

-    }

-

-    ip_init(&ip, 1);

-    res = addr_resolve(localhost, &ip, NULL);

-

-    ck_assert_msg(res > 0, "Resolver failed: %u, %s (%x, %x)", errno, strerror(errno));

-

-    if (res > 0) {

-        ck_assert_msg(ip.family == AF_INET6, "Expected family AF_INET6, got %u.", ip.family);

-        ck_assert_msg(!memcmp(&ip.ip6, &in6addr_loopback, sizeof(IP6)), "Expected ::1, got %s.", ip_ntoa(&ip));

-    }

-

-    ip_init(&ip, 1);

-    ip.family = AF_UNSPEC;

-    IP extra;

-    ip_reset(&extra);

-    res = addr_resolve(localhost, &ip, &extra);

-

-    ck_assert_msg(res > 0, "Resolver failed: %u, %s (%x, %x)", errno, strerror(errno));

-

-    if (res > 0) {

-        ck_assert_msg(ip.family == AF_INET6, "Expected family AF_INET6, got %u.", ip.family);

-        ck_assert_msg(!memcmp(&ip.ip6, &in6addr_loopback, sizeof(IP6)), "Expected ::1, got %s.", ip_ntoa(&ip));

-

-        ck_assert_msg(extra.family == AF_INET, "Expected family AF_INET, got %u.", extra.family);

-        ck_assert_msg(extra.ip4.uint32 == htonl(0x7F000001), "Expected 127.0.0.1, got %s.", inet_ntoa(extra.ip4.in_addr));

-    }

-}

-END_TEST

-

-START_TEST(test_ip_equal)

-{

-    int res;

-    IP ip1, ip2;

-    ip_reset(&ip1);

-    ip_reset(&ip2);

-

-    res = ip_equal(NULL, NULL);

-    ck_assert_msg(res == 0, "ip_equal(NULL, NULL): expected result 0, got %u.", res);

-

-    res = ip_equal(&ip1, NULL);

-    ck_assert_msg(res == 0, "ip_equal(PTR, NULL): expected result 0, got %u.", res);

-

-    res = ip_equal(NULL, &ip1);

-    ck_assert_msg(res == 0, "ip_equal(NULL, PTR): expected result 0, got %u.", res);

-

-    ip1.family = AF_INET;

-    ip1.ip4.uint32 = htonl(0x7F000001);

-

-    res = ip_equal(&ip1, &ip2);

-    ck_assert_msg(res == 0, "ip_equal( {AF_INET, 127.0.0.1}, {AF_UNSPEC, 0} ): expected result 0, got %u.", res);

-

-    ip2.family = AF_INET;

-    ip2.ip4.uint32 = htonl(0x7F000001);

-

-    res = ip_equal(&ip1, &ip2);

-    ck_assert_msg(res != 0, "ip_equal( {AF_INET, 127.0.0.1}, {AF_INET, 127.0.0.1} ): expected result != 0, got 0.");

-

-    ip2.ip4.uint32 = htonl(0x7F000002);

-

-    res = ip_equal(&ip1, &ip2);

-    ck_assert_msg(res == 0, "ip_equal( {AF_INET, 127.0.0.1}, {AF_INET, 127.0.0.2} ): expected result 0, got %u.", res);

-

-    ip2.family = AF_INET6;

-    ip2.ip6.uint32[0] = 0;

-    ip2.ip6.uint32[1] = 0;

-    ip2.ip6.uint32[2] = htonl(0xFFFF);

-    ip2.ip6.uint32[3] = htonl(0x7F000001);

-

-    ck_assert_msg(IN6_IS_ADDR_V4MAPPED(&ip2.ip6) != 0, "IN6_IS_ADDR_V4MAPPED(::ffff:127.0.0.1): expected != 0, got 0.");

-

-    res = ip_equal(&ip1, &ip2);

-    ck_assert_msg(res != 0, "ip_equal( {AF_INET, 127.0.0.1}, {AF_INET6, ::ffff:127.0.0.1} ): expected result != 0, got 0.");

-

-    memcpy(&ip2.ip6, &in6addr_loopback, sizeof(IP6));

-    res = ip_equal(&ip1, &ip2);

-    ck_assert_msg(res == 0, "ip_equal( {AF_INET, 127.0.0.1}, {AF_INET6, ::1} ): expected result 0, got %u.", res);

-

-    memcpy(&ip1, &ip2, sizeof(IP));

-    res = ip_equal(&ip1, &ip2);

-    ck_assert_msg(res != 0, "ip_equal( {AF_INET6, ::1}, {AF_INET6, ::1} ): expected result != 0, got 0.");

-

-    ip2.ip6.uint8[15]++;

-    res = ip_equal(&ip1, &ip2);

-    ck_assert_msg(res == 0, "ip_equal( {AF_INET6, ::1}, {AF_INET6, ::2} ): expected result 0, got %res.", res);

-}

-END_TEST

-

-#define DEFTESTCASE(NAME) \

-    TCase *NAME = tcase_create(#NAME); \

-    tcase_add_test(NAME, test_##NAME); \

-    suite_add_tcase(s, NAME);

-

-Suite *network_suite(void)

-{

-    Suite *s = suite_create("Network");

-

-    DEFTESTCASE(addr_resolv_localhost);

-    DEFTESTCASE(ip_equal);

-

-    return s;

-}

-

-int main(int argc, char *argv[])

-{

-    srand((unsigned int) time(NULL));

-

-    Suite *network = network_suite();

-    SRunner *test_runner = srunner_create(network);

-    int number_failed = 0;

-

-    srunner_run_all(test_runner, CK_NORMAL);

-    number_failed = srunner_ntests_failed(test_runner);

-

-    srunner_free(test_runner);

-

-    return number_failed;

-}

+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <sys/types.h>
+#include <stdint.h>
+#include <string.h>
+#include <check.h>
+#include <stdlib.h>
+#include <time.h>
+
+#include "../toxcore/network.h"
+
+START_TEST(test_addr_resolv_localhost)
+{
+#ifdef __CYGWIN__
+    /* force initialization of network stack
+     * normally this should happen automatically
+     * cygwin doesn't do it for every network related function though
+     * e.g. not for getaddrinfo... */
+    socket(0, 0, 0);
+    errno = 0;
+#endif
+
+    const char localhost[] = "localhost";
+
+    IP ip;
+    ip_init(&ip, 0);
+
+    int res = addr_resolve(localhost, &ip, NULL);
+
+    ck_assert_msg(res > 0, "Resolver failed: %u, %s (%x, %x)", errno, strerror(errno));
+
+    if (res > 0) {
+        ck_assert_msg(ip.family == AF_INET, "Expected family AF_INET, got %u.", ip.family);
+        ck_assert_msg(ip.ip4.uint32 == htonl(0x7F000001), "Expected 127.0.0.1, got %s.", inet_ntoa(ip.ip4.in_addr));
+    }
+
+    ip_init(&ip, 1);
+    res = addr_resolve(localhost, &ip, NULL);
+
+    ck_assert_msg(res > 0, "Resolver failed: %u, %s (%x, %x)", errno, strerror(errno));
+
+    if (res > 0) {
+        ck_assert_msg(ip.family == AF_INET6, "Expected family AF_INET6, got %u.", ip.family);
+        ck_assert_msg(!memcmp(&ip.ip6, &in6addr_loopback, sizeof(IP6)), "Expected ::1, got %s.", ip_ntoa(&ip));
+    }
+
+    ip_init(&ip, 1);
+    ip.family = AF_UNSPEC;
+    IP extra;
+    ip_reset(&extra);
+    res = addr_resolve(localhost, &ip, &extra);
+
+    ck_assert_msg(res > 0, "Resolver failed: %u, %s (%x, %x)", errno, strerror(errno));
+
+    if (res > 0) {
+        ck_assert_msg(ip.family == AF_INET6, "Expected family AF_INET6, got %u.", ip.family);
+        ck_assert_msg(!memcmp(&ip.ip6, &in6addr_loopback, sizeof(IP6)), "Expected ::1, got %s.", ip_ntoa(&ip));
+
+        ck_assert_msg(extra.family == AF_INET, "Expected family AF_INET, got %u.", extra.family);
+        ck_assert_msg(extra.ip4.uint32 == htonl(0x7F000001), "Expected 127.0.0.1, got %s.", inet_ntoa(extra.ip4.in_addr));
+    }
+}
+END_TEST
+
+START_TEST(test_ip_equal)
+{
+    int res;
+    IP ip1, ip2;
+    ip_reset(&ip1);
+    ip_reset(&ip2);
+
+    res = ip_equal(NULL, NULL);
+    ck_assert_msg(res == 0, "ip_equal(NULL, NULL): expected result 0, got %u.", res);
+
+    res = ip_equal(&ip1, NULL);
+    ck_assert_msg(res == 0, "ip_equal(PTR, NULL): expected result 0, got %u.", res);
+
+    res = ip_equal(NULL, &ip1);
+    ck_assert_msg(res == 0, "ip_equal(NULL, PTR): expected result 0, got %u.", res);
+
+    ip1.family = AF_INET;
+    ip1.ip4.uint32 = htonl(0x7F000001);
+
+    res = ip_equal(&ip1, &ip2);
+    ck_assert_msg(res == 0, "ip_equal( {AF_INET, 127.0.0.1}, {AF_UNSPEC, 0} ): expected result 0, got %u.", res);
+
+    ip2.family = AF_INET;
+    ip2.ip4.uint32 = htonl(0x7F000001);
+
+    res = ip_equal(&ip1, &ip2);
+    ck_assert_msg(res != 0, "ip_equal( {AF_INET, 127.0.0.1}, {AF_INET, 127.0.0.1} ): expected result != 0, got 0.");
+
+    ip2.ip4.uint32 = htonl(0x7F000002);
+
+    res = ip_equal(&ip1, &ip2);
+    ck_assert_msg(res == 0, "ip_equal( {AF_INET, 127.0.0.1}, {AF_INET, 127.0.0.2} ): expected result 0, got %u.", res);
+
+    ip2.family = AF_INET6;
+    ip2.ip6.uint32[0] = 0;
+    ip2.ip6.uint32[1] = 0;
+    ip2.ip6.uint32[2] = htonl(0xFFFF);
+    ip2.ip6.uint32[3] = htonl(0x7F000001);
+
+    ck_assert_msg(IN6_IS_ADDR_V4MAPPED(&ip2.ip6) != 0, "IN6_IS_ADDR_V4MAPPED(::ffff:127.0.0.1): expected != 0, got 0.");
+
+    res = ip_equal(&ip1, &ip2);
+    ck_assert_msg(res != 0, "ip_equal( {AF_INET, 127.0.0.1}, {AF_INET6, ::ffff:127.0.0.1} ): expected result != 0, got 0.");
+
+    memcpy(&ip2.ip6, &in6addr_loopback, sizeof(IP6));
+    res = ip_equal(&ip1, &ip2);
+    ck_assert_msg(res == 0, "ip_equal( {AF_INET, 127.0.0.1}, {AF_INET6, ::1} ): expected result 0, got %u.", res);
+
+    memcpy(&ip1, &ip2, sizeof(IP));
+    res = ip_equal(&ip1, &ip2);
+    ck_assert_msg(res != 0, "ip_equal( {AF_INET6, ::1}, {AF_INET6, ::1} ): expected result != 0, got 0.");
+
+    ip2.ip6.uint8[15]++;
+    res = ip_equal(&ip1, &ip2);
+    ck_assert_msg(res == 0, "ip_equal( {AF_INET6, ::1}, {AF_INET6, ::2} ): expected result 0, got %res.", res);
+}
+END_TEST
+
+#define DEFTESTCASE(NAME) \
+    TCase *NAME = tcase_create(#NAME); \
+    tcase_add_test(NAME, test_##NAME); \
+    suite_add_tcase(s, NAME);
+
+Suite *network_suite(void)
+{
+    Suite *s = suite_create("Network");
+
+    DEFTESTCASE(addr_resolv_localhost);
+    DEFTESTCASE(ip_equal);
+
+    return s;
+}
+
+int main(int argc, char *argv[])
+{
+    srand((unsigned int) time(NULL));
+
+    Suite *network = network_suite();
+    SRunner *test_runner = srunner_create(network);
+    int number_failed = 0;
+
+    srunner_run_all(test_runner, CK_NORMAL);
+    number_failed = srunner_ntests_failed(test_runner);
+
+    srunner_free(test_runner);
+
+    return number_failed;
+}
diff --git a/testing/nTox.c b/testing/nTox.c
index e87b4b83..2e394528 100644
--- a/testing/nTox.c
+++ b/testing/nTox.c
@@ -137,6 +137,7 @@ void get_id(Tox *m, char *data)
     tox_getaddress(m, address);
 
     uint32_t i = 0;
+
     for (; i < TOX_FRIEND_ADDRESS_SIZE; i++) {
         sprintf(data + 2 * i + offset, "%02X ", address[i]);
     }
@@ -257,9 +258,9 @@ void line_eval(Tox *m, char *line)
                     if (num >= 0) {
                         sprintf(numstring, "[i] Added friend as %d.", num);
                         save_data(m);
-                    }
-                    else
+                    } else
                         sprintf(numstring, "[i] Unknown error %i.", num);
+
                     break;
             }
 
@@ -508,12 +509,14 @@ static int load_data(Tox *m)
 {
     FILE *data_file = fopen(data_file_name, "r");
     size_t size = 0;
+
     if (data_file) {
         fseek(data_file, 0, SEEK_END);
         size = ftell(data_file);
         rewind(data_file);
 
         uint8_t data[size];
+
         if (fread(data, sizeof(uint8_t), size, data_file) != size) {
             fputs("[!] could not read data file!\n", stderr);
             fclose(data_file);
@@ -537,6 +540,7 @@ static int load_data(Tox *m)
 static int save_data(Tox *m)
 {
     FILE *data_file = fopen(data_file_name, "w");
+
     if (!data_file) {
         perror("[!] load_key");
         return 0;
@@ -563,6 +567,7 @@ static int save_data(Tox *m)
 static int load_data_or_init(Tox *m, char *path)
 {
     data_file_name = path;
+
     if (load_data(m))
         return 1;
 
@@ -588,10 +593,12 @@ void print_invite(Tox *m, int friendnumber, uint8_t *group_public_key, void *use
     new_lines(msg);
 }
 
-void print_groupmessage(Tox *m, int groupnumber, uint8_t *message, uint16_t length, void *userdata)
+void print_groupmessage(Tox *m, int groupnumber, int peernumber, uint8_t *message, uint16_t length, void *userdata)
 {
     char msg[256 + length];
-    sprintf(msg, "[g] %u: %s", groupnumber, message);
+    uint8_t name[TOX_MAX_NAME_LENGTH];
+    tox_group_peername(m, groupnumber, peernumber, name);
+    sprintf(msg, "[g] %u: <%s>: %s", groupnumber, name, message);
     new_lines(msg);
 }
 
@@ -669,6 +676,7 @@ int main(int argc, char *argv[])
     new_lines("[i] change username with /n");
     uint8_t name[TOX_MAX_NAME_LENGTH];
     uint16_t namelen = tox_getselfname(m, name, sizeof(name));
+
     if (namelen > 0) {
         char whoami[128 + TOX_MAX_NAME_LENGTH];
         snprintf(whoami, sizeof(whoami), "[i] your current username is: %s", name);
diff --git a/toxcore/DHT.c b/toxcore/DHT.c
index f38ce3a5..84c00c70 100644
--- a/toxcore/DHT.c
+++ b/toxcore/DHT.c
@@ -1579,6 +1579,7 @@ void DHT_save(DHT *dht, uint8_t *data)
     len = num * sizeof(Client_data);
     type = DHT_STATE_TYPE_CLIENTS;
     data = z_state_save_subheader(data, len, type);
+
     if (num) {
         Client_data *clients = (Client_data *)data;
 
@@ -1586,6 +1587,7 @@ void DHT_save(DHT *dht, uint8_t *data)
             if (dht->close_clientlist[i].timestamp != 0)
                 memcpy(&clients[num++], &dht->close_clientlist[i], sizeof(Client_data));
     }
+
     data += len;
 }
 
diff --git a/toxcore/Messenger.c b/toxcore/Messenger.c
index d9e085fb..dbbfa58c 100644
--- a/toxcore/Messenger.c
+++ b/toxcore/Messenger.c
@@ -686,9 +686,9 @@ void m_callback_group_invite(Messenger *m, void (*function)(Messenger *m, int, u
 
 /* Set the callback for group messages.
  *
- *  Function(Messenger *m, int groupnumber, uint8_t * message, uint16_t length, void *userdata)
+ *  Function(Tox *tox, int groupnumber, int friendgroupnumber, uint8_t * message, uint16_t length, void *userdata)
  */
-void m_callback_group_message(Messenger *m, void (*function)(Messenger *m, int, uint8_t *, uint16_t, void *),
+void m_callback_group_message(Messenger *m, void (*function)(Messenger *m, int, int, uint8_t *, uint16_t, void *),
                               void *userdata)
 {
     m->group_message = function;
@@ -705,7 +705,7 @@ static void group_message_function(Group_Chat *chat, int peer_number, uint8_t *m
     }
 
     if (m->group_message)
-        (*m->group_message)(m, i, message, length, m->group_invite_userdata);
+        (*m->group_message)(m, i, peer_number, message, length, m->group_invite_userdata);
 }
 
 /* Creates a new groupchat and puts it in the chats array.
@@ -788,6 +788,25 @@ int del_groupchat(Messenger *m, int groupnumber)
     return 0;
 }
 
+/* Copy the name of peernumber who is in groupnumber to name.
+ * name must be at least MAX_NICK_BYTES long.
+ *
+ * return length of name if success
+ * return -1 if failure
+ */
+int m_group_peername(Messenger *m, int groupnumber, int peernumber, uint8_t *name)
+{
+    if ((unsigned int)groupnumber >= m->numchats)
+        return -1;
+
+    if (m->chats == NULL)
+        return -1;
+
+    if (m->chats[groupnumber] == NULL)
+        return -1;
+
+    return group_peername(m->chats[groupnumber], peernumber, name);
+}
 /* return 1 if that friend was invited to the group
  * return 0 if the friend was not or error.
  */
@@ -1593,6 +1612,7 @@ static int messenger_load_state_callback(void *outer, uint8_t *data, uint32_t le
             break;
 
 #ifdef DEBUG
+
         default:
             fprintf(stderr, "Load state: contains unrecognized part (len %u, type %u)\n",
                     length, type);
diff --git a/toxcore/Messenger.h b/toxcore/Messenger.h
index bfcc69df..78580dc0 100644
--- a/toxcore/Messenger.h
+++ b/toxcore/Messenger.h
@@ -159,7 +159,7 @@ typedef struct Messenger {
     void *friend_connectionstatuschange_userdata;
     void (*group_invite)(struct Messenger *m, int, uint8_t *, void *);
     void *group_invite_userdata;
-    void (*group_message)(struct Messenger *m, int, uint8_t *, uint16_t, void *);
+    void (*group_message)(struct Messenger *m, int, int, uint8_t *, uint16_t, void *);
     void *group_message_userdata;
 
 } Messenger;
@@ -382,9 +382,9 @@ void m_callback_group_invite(Messenger *m, void (*function)(Messenger *m, int, u
 
 /* Set the callback for group messages.
  *
- *  Function(Messenger *m, int groupnumber, uint8_t * message, uint16_t length, void *userdata)
+ *  Function(Tox *tox, int groupnumber, int friendgroupnumber, uint8_t * message, uint16_t length, void *userdata)
  */
-void m_callback_group_message(Messenger *m, void (*function)(Messenger *m, int, uint8_t *, uint16_t, void *),
+void m_callback_group_message(Messenger *m, void (*function)(Messenger *m, int, int, uint8_t *, uint16_t, void *),
                               void *userdata);
 
 /* Creates a new groupchat and puts it in the chats array.
@@ -401,6 +401,14 @@ int add_groupchat(Messenger *m);
  */
 int del_groupchat(Messenger *m, int groupnumber);
 
+/* Copy the name of peernumber who is in groupnumber to name.
+ * name must be at least MAX_NICK_BYTES long.
+ *
+ * return length of name if success
+ * return -1 if failure
+ */
+int m_group_peername(Messenger *m, int groupnumber, int peernumber, uint8_t *name);
+
 /* invite friendnumber to groupnumber
  * return 0 on success
  * return -1 on failure
diff --git a/toxcore/group_chats.c b/toxcore/group_chats.c
index f37c6a9c..dc8e158b 100644
--- a/toxcore/group_chats.c
+++ b/toxcore/group_chats.c
@@ -278,6 +278,28 @@ static int delpeer(Group_Chat *chat, uint8_t *client_id)
 
     return -1;
 }
+
+/* Copy the name of peernum to name.
+ * name must be at least MAX_NICK_BYTES long.
+ *
+ * return length of name if success
+ * return -1 if failure
+ */
+int group_peername(Group_Chat *chat, int peernum, uint8_t *name)
+{
+    if ((uint32_t)peernum >= chat->numpeers)
+        return -1;
+
+    if (chat->group[peernum].nick_len == 0) {
+        memcpy(name, "NSA Agent", 10); /* Kindly remind the user that someone with no name might be a NSA agent.*/
+        return 10;
+    }
+
+    memcpy(name, chat->group[peernum].nick, chat->group[peernum].nick_len);
+    return chat->group[peernum].nick_len;
+}
+
+
 /* min time between pings sent to one peer in seconds */
 #define PING_TIMEOUT 5
 static int send_getnodes(Group_Chat *chat, IP_Port ip_port, int peernum)
diff --git a/toxcore/group_chats.h b/toxcore/group_chats.h
index 78a5488c..e45f2af2 100644
--- a/toxcore/group_chats.h
+++ b/toxcore/group_chats.h
@@ -31,6 +31,8 @@
 extern "C" {
 #endif
 
+#define MAX_NICK_BYTES 128
+
 typedef struct {
     uint8_t     client_id[crypto_box_PUBLICKEYBYTES];
     uint64_t    pingid;
@@ -39,6 +41,9 @@ typedef struct {
     uint64_t    last_recv;
     uint64_t    last_recv_msgping;
     uint32_t    last_message_number;
+
+    uint8_t     nick[MAX_NICK_BYTES];
+    uint16_t    nick_len;
 } Group_Peer;
 
 typedef struct {
@@ -65,6 +70,14 @@ typedef struct Group_Chat {
 
 } Group_Chat;
 
+/* Copy the name of peernum to name.
+ * name must be at least MAX_NICK_BYTES long.
+ *
+ * return length of name if success
+ * return -1 if failure
+ */
+int group_peername(Group_Chat *chat, int peernum, uint8_t *name);
+
 /*
  * Set callback function for chat messages.
  *
diff --git a/toxcore/net_crypto.c b/toxcore/net_crypto.c
index 1de32cb0..a2e42557 100644
--- a/toxcore/net_crypto.c
+++ b/toxcore/net_crypto.c
@@ -456,7 +456,7 @@ int crypto_connect(Net_Crypto *c, uint8_t *public_key, IP_Port ip_port)
     }
 
     if (realloc_cryptoconnection(c, c->crypto_connections_length + 1) == -1
-        || c->crypto_connections == NULL)
+            || c->crypto_connections == NULL)
         return -1;
 
     memset(&(c->crypto_connections[c->crypto_connections_length]), 0, sizeof(Crypto_Connection));
@@ -580,7 +580,7 @@ int accept_crypto_inbound(Net_Crypto *c, int connection_id, uint8_t *public_key,
      * }
      */
     if (realloc_cryptoconnection(c, c->crypto_connections_length + 1) == -1
-        || c->crypto_connections == NULL)
+            || c->crypto_connections == NULL)
         return -1;
 
     memset(&(c->crypto_connections[c->crypto_connections_length]), 0, sizeof(Crypto_Connection));
diff --git a/toxcore/tox.c b/toxcore/tox.c
index 80d64626..4fba360b 100644
--- a/toxcore/tox.c
+++ b/toxcore/tox.c
@@ -379,9 +379,9 @@ void tox_callback_group_invite(void *tox, void (*function)(Messenger *tox, int,
 }
 /* Set the callback for group messages.
  *
- *  Function(Tox *tox, int groupnumber, uint8_t * message, uint16_t length, void *userdata)
+ *  Function(Tox *tox, int groupnumber, int friendgroupnumber, uint8_t * message, uint16_t length, void *userdata)
  */
-void tox_callback_group_message(void *tox, void (*function)(Messenger *tox, int, uint8_t *, uint16_t, void *),
+void tox_callback_group_message(void *tox, void (*function)(Messenger *tox, int, int, uint8_t *, uint16_t, void *),
                                 void *userdata)
 {
     Messenger *m = tox;
@@ -407,6 +407,18 @@ int tox_del_groupchat(void *tox, int groupnumber)
     Messenger *m = tox;
     return del_groupchat(m, groupnumber);
 }
+
+/* Copy the name of peernumber who is in groupnumber to name.
+ * name must be at least MAX_NICK_BYTES long.
+ *
+ * return length of name if success
+ * return -1 if failure
+ */
+int tox_group_peername(void *tox, int groupnumber, int peernumber, uint8_t *name)
+{
+    Messenger *m = tox;
+    return m_group_peername(m, groupnumber, peernumber, name);
+}
 /* invite friendnumber to groupnumber
  * return 0 on success
  * return -1 on failure
diff --git a/toxcore/tox.h b/toxcore/tox.h
index 89242f1f..b39008fe 100644
--- a/toxcore/tox.h
+++ b/toxcore/tox.h
@@ -357,9 +357,9 @@ void tox_callback_group_invite(Tox *tox, void (*function)(Tox *tox, int, uint8_t
 
 /* Set the callback for group messages.
  *
- *  Function(Tox *tox, int groupnumber, uint8_t * message, uint16_t length, void *userdata)
+ *  Function(Tox *tox, int groupnumber, int friendgroupnumber, uint8_t * message, uint16_t length, void *userdata)
  */
-void tox_callback_group_message(Tox *tox, void (*function)(Tox *tox, int, uint8_t *, uint16_t, void *),
+void tox_callback_group_message(Tox *tox, void (*function)(Tox *tox, int, int, uint8_t *, uint16_t, void *),
                                 void *userdata);
 
 /* Creates a new groupchat and puts it in the chats array.
@@ -376,6 +376,14 @@ int tox_add_groupchat(Tox *tox);
  */
 int tox_del_groupchat(Tox *tox, int groupnumber);
 
+/* Copy the name of peernumber who is in groupnumber to name.
+ * name must be at least TOX_MAX_NAME_LENGTH long.
+ *
+ * return length of name if success
+ * return -1 if failure
+ */
+int tox_group_peername(Tox *tox, int groupnumber, int peernumber, uint8_t *name);
+
 /* invite friendnumber to groupnumber
  * return 0 on success
  * return -1 on failure
diff --git a/toxcore/util.h b/toxcore/util.h
index 6937f7d4..9e4ac79a 100644
--- a/toxcore/util.h
+++ b/toxcore/util.h
@@ -18,7 +18,7 @@ void id_cpy(uint8_t *dest, uint8_t *src);
 
 typedef int (*load_state_callback_func)(void *outer, uint8_t *data, uint32_t len, uint16_t type);
 int load_state(load_state_callback_func load_state_callback, void *outer,
-                        uint8_t *data, uint32_t length, uint16_t cookie_inner);
+               uint8_t *data, uint32_t length, uint16_t cookie_inner);
 
 #undef LOGGING
 /* #define LOGGING */