From 55d3ef5024d4a597ddeae23ca7d29375c7d6a9d3 Mon Sep 17 00:00:00 2001
From: default <nobody@localhost>
Date: Wed, 8 Nov 2023 09:20:34 +0100
Subject: [PATCH] Tags can now be searched for from the server base URL.

---
 data.c  |  5 ++---
 html.c  |  2 +-
 httpd.c | 15 +++++++++++++++
 snac.h  |  4 +++-
 4 files changed, 21 insertions(+), 5 deletions(-)

diff --git a/data.c b/data.c
index 5026154..cd9c5e7 100644
--- a/data.c
+++ b/data.c
@@ -1575,7 +1575,6 @@ void tag_index(const char *id, const xs_dict *obj)
     xs_list *tags = xs_dict_get(obj, "tag");
 
     if (is_msg_public(obj) && xs_type(tags) == XSTYPE_LIST && xs_list_len(tags) > 0) {
-        xs *md5_id    = xs_md5_hex(id, strlen(id));
         xs *g_tag_dir = xs_fmt("%s/tag", srv_basedir);
 
         mkdirx(g_tag_dir);
@@ -1596,7 +1595,7 @@ void tag_index(const char *id, const xs_dict *obj)
                 mkdirx(tag_dir);
 
                 xs *g_tag_idx = xs_fmt("%s/%s.idx", tag_dir, md5_tag);
-                index_add(g_tag_idx, md5_id);
+                index_add(g_tag_idx, id);
 
                 FILE *f;
                 xs *g_tag_name = xs_replace(g_tag_idx, ".idx", ".tag");
@@ -1605,7 +1604,7 @@ void tag_index(const char *id, const xs_dict *obj)
                     fclose(f);
                 }
 
-                srv_debug(0, xs_fmt("tagged %s #%s (%s #%s)", id, name, md5_id, md5_tag));
+                srv_debug(0, xs_fmt("tagged %s #%s (#%s)", id, name, md5_tag));
             }
         }
     }
diff --git a/html.c b/html.c
index 7e96f46..1220765 100644
--- a/html.c
+++ b/html.c
@@ -1574,7 +1574,7 @@ xs_str *html_timeline(snac *user, const xs_list *list, int local, int skip, int
             continue;
 
         /* if it's an instance page, discard private users */
-        if (user == NULL) {
+        if (user == NULL && xs_startswith(xs_dict_get(msg, "id"), srv_baseurl)) {
             const char *atto = xs_dict_get(msg, "attributedTo");
             xs *l = xs_split(atto, "/");
             const char *uid = xs_list_get(l, -1);
diff --git a/httpd.c b/httpd.c
index aed15dc..2a91523 100644
--- a/httpd.c
+++ b/httpd.c
@@ -141,6 +141,21 @@ int server_get_handler(xs_dict *req, const char *q_path,
 
     /* is it the server root? */
     if (*q_path == '\0') {
+        xs_dict *q_vars = xs_dict_get(req, "q_vars");
+        char *t = NULL;
+
+        if (xs_type(q_vars) == XSTYPE_DICT && (t = xs_dict_get(q_vars, "t"))) {
+            /* tag search query */
+            int skip = xs_number_get(xs_dict_get(q_vars, "skip"));
+            int show = xs_number_get(xs_dict_get(q_vars, "show"));
+
+            if (show == 0)
+                show = 64;
+
+            xs *tl = tag_search(t, skip, show);
+            *body = html_timeline(NULL, tl, 0, skip, show, 0);
+        }
+        else
         if (xs_type(xs_dict_get(srv_config, "show_instance_timeline")) == XSTYPE_TRUE) {
             xs *tl = timeline_instance_list(0, 30);
             *body = html_timeline(NULL, tl, 0, 0, 0, 0);
diff --git a/snac.h b/snac.h
index 582f5f1..8c02004 100644
--- a/snac.h
+++ b/snac.h
@@ -69,7 +69,8 @@ double mtime_nl(const char *fn, int *n_link);
 #define mtime(fn) mtime_nl(fn, NULL)
 double f_ctime(const char *fn);
 
-int index_add(const char *fn, const char *md5);
+int index_add_md5(const char *fn, const char *md5);
+int index_add(const char *fn, const char *id);
 int index_gc(const char *fn);
 int index_first(const char *fn, char *buf, int size);
 int index_len(const char *fn);
@@ -144,6 +145,7 @@ void hide(snac *snac, const char *id);
 int is_hidden(snac *snac, const char *id);
 
 void tag_index(const char *id, const xs_dict *obj);
+xs_list *tag_search(char *tag, int skip, int show);
 
 int actor_add(const char *actor, xs_dict *msg);
 int actor_get(const char *actor, xs_dict **data);