Added a new compilation variable NO_MASTODON_API.

The Mastodon API is a big and ugly beast; if you don't want
it in your snac, you can compile it out by running

make CFLAGS=-DNO_MASTODON_API

And your snac binary will be as slim as always.

httpd.c

@@ -183,17 +183,21 @@ void httpd_connection(FILE *f)
         if (status == 0)
             status = activitypub_get_handler(req, q_path, &body, &b_size, &ctype);
 
+#ifndef NO_MASTODON_API
         if (status == 0)
             status = oauth_get_handler(req, q_path, &body, &b_size, &ctype);
 
         if (status == 0)
             status = mastoapi_get_handler(req, q_path, &body, &b_size, &ctype);
+#endif /* NO_MASTODON_API */
 
         if (status == 0)
             status = html_get_handler(req, q_path, &body, &b_size, &ctype);
     }
     else
     if (strcmp(method, "POST") == 0) {
+
+#ifndef NO_MASTODON_API
         if (status == 0)
             status = oauth_post_handler(req, q_path,
                         payload, p_size, &body, &b_size, &ctype);
@@ -201,6 +205,7 @@ void httpd_connection(FILE *f)
         if (status == 0)
             status = mastoapi_post_handler(req, q_path,
                         payload, p_size, &body, &b_size, &ctype);
+#endif
 
         if (status == 0)
             status = activitypub_post_handler(req, q_path,

mastoapi.c

@@ -1,6 +1,8 @@
 /* snac - A simple, minimalistic ActivityPub instance */
 /* copyright (c) 2022 - 2023 grunfink / MIT license */
 
+#ifndef NO_MASTODON_API
+
 #include "xs.h"
 #include "xs_encdec.h"
 #include "xs_openssl.h"
@@ -1453,3 +1455,5 @@ int mastoapi_post_handler(const xs_dict *req, const char *q_path,
 
     return status;
 }
+
+#endif /* #ifndef NO_MASTODON_API */