Attend mastoapi relationships.

Now, the follow/unfollow buttons appear on each account's page.

data.c

@@ -1074,7 +1074,7 @@ d_char *timeline_list(snac *snac, const char *idx_name, int skip, int show)
    with a link to a cached author, because we need the Follow object
    in case we need to unfollow (Undo + original Follow) */
 
-d_char *_following_fn(snac *snac, char *actor)
+d_char *_following_fn(snac *snac, const char *actor)
 {
     xs *md5 = xs_md5_hex(actor, strlen(actor));
     return xs_fmt("%s/following/%s.json", snac->basedir, md5);
@@ -1116,7 +1116,7 @@ int following_del(snac *snac, char *actor)
 }
 
 
-int following_check(snac *snac, char *actor)
+int following_check(snac *snac, const char *actor)
 /* checks if we are following this actor */
 {
     xs *fn = _following_fn(snac, actor);
@@ -1185,14 +1185,14 @@ d_char *following_list(snac *snac)
 }
 
 
-d_char *_muted_fn(snac *snac, char *actor)
+d_char *_muted_fn(snac *snac, const char *actor)
 {
     xs *md5 = xs_md5_hex(actor, strlen(actor));
     return xs_fmt("%s/muted/%s", snac->basedir, md5);
 }
 
 
-void mute(snac *snac, char *actor)
+void mute(snac *snac, const char *actor)
 /* mutes a moron */
 {
     xs *fn = _muted_fn(snac, actor);
@@ -1207,7 +1207,7 @@ void mute(snac *snac, char *actor)
 }
 
 
-void unmute(snac *snac, char *actor)
+void unmute(snac *snac, const char *actor)
 /* actor is no longer a moron */
 {
     xs *fn = _muted_fn(snac, actor);
@@ -1218,7 +1218,7 @@ void unmute(snac *snac, char *actor)
 }
 
 
-int is_muted(snac *snac, char *actor)
+int is_muted(snac *snac, const char *actor)
 /* check if someone is muted */
 {
     xs *fn = _muted_fn(snac, actor);

mastoapi.c

@@ -705,12 +705,47 @@ int mastoapi_get_handler(const xs_dict *req, const char *q_path,
     if (strcmp(cmd, "/v1/accounts/relationships") == 0) {
         /* find if an account is followed, blocked, etc. */
         /* the account to get relationships about is in args "id[]" */
-        /* dummy by now */
+
         if (logged_in) {
-            *body  = xs_dup("[]");
+            xs *res         = xs_list_new();
+            const char *md5 = xs_dict_get(args, "id[]");
+            xs *actor_o     = NULL;
+
+            if (!xs_is_null(md5) && valid_status(object_get_by_md5(md5, &actor_o))) {
+                xs *rel = xs_dict_new();
+                xs *t   = xs_val_new(XSTYPE_TRUE);
+                xs *f   = xs_val_new(XSTYPE_FALSE);
+
+                const char *actor = xs_dict_get(actor_o, "id");
+
+                rel = xs_dict_append(rel, "id",                   md5);
+                rel = xs_dict_append(rel, "following",
+                    following_check(&snac1, actor) ? t : f);
+
+                rel = xs_dict_append(rel, "showing_reblogs",      t);
+                rel = xs_dict_append(rel, "notifying",            f);
+                rel = xs_dict_append(rel, "followed_by",
+                    follower_check(&snac1, actor) ? t : f);
+
+                rel = xs_dict_append(rel, "blocking",
+                    is_muted(&snac1, actor) ? t : f);
+
+                rel = xs_dict_append(rel, "muting",               f);
+                rel = xs_dict_append(rel, "muting_notifications", f);
+                rel = xs_dict_append(rel, "requested",            f);
+                rel = xs_dict_append(rel, "domain_blocking",      f);
+                rel = xs_dict_append(rel, "endorsed",             f);
+                rel = xs_dict_append(rel, "note",                 "");
+
+                res = xs_list_append(res, rel);
+            }
+
+            *body  = xs_json_dumps_pp(res, 4);
             *ctype = "application/json";
             status = 200;
         }
+        else
+            status = 422;
     }
     else
     if (xs_startswith(cmd, "/v1/accounts/")) {

snac.h

@@ -1,7 +1,7 @@
 /* snac - A simple, minimalistic ActivityPub instance */
 /* copyright (c) 2022 - 2023 grunfink / MIT license */
 
-#define VERSION "2.28"
+#define VERSION "2.29-dev"
 
 #define USER_AGENT "snac/" VERSION
 
@@ -114,13 +114,13 @@ d_char *local_list(snac *snac, int max);
 
 int following_add(snac *snac, char *actor, char *msg);
 int following_del(snac *snac, char *actor);
-int following_check(snac *snac, char *actor);
+int following_check(snac *snac, const char *actor);
 int following_get(snac *snac, char *actor, d_char **data);
 d_char *following_list(snac *snac);
 
-void mute(snac *snac, char *actor);
-void unmute(snac *snac, char *actor);
-int is_muted(snac *snac, char *actor);
+void mute(snac *snac, const char *actor);
+void unmute(snac *snac, const char *actor);
+int is_muted(snac *snac, const char *actor);
 
 void hide(snac *snac, const char *id);
 int is_hidden(snac *snac, const char *id);