rpc-servernotice: Allow RPC users to send notices to individual users

files/rpc-servernotice.c

@@ -0,0 +1,114 @@
+/* GPLv3 or later
+   Valware © 2025
+   Sends a server notice to a specific user
+*/
+/*** <<<MODULE MANAGER START>>>
+module
+{
+        documentation "https://github.com/ValwareIRC/valware-unrealircd-mods/blob/main/rpc-servernotice/README.md";
+        troubleshooting "In case of problems, check the documentation or e-mail me at [email protected]";
+        min-unrealircd-version "6.1.10";
+        max-unrealircd-version "6.*";
+        post-install-text
+        {
+                "The module is installed. Now all you need to do is add a loadmodule line:";
+                "loadmodule \"third/rpc-servernotice\";";
+                "Once you're good to go, you can finally type in your shell: ./unrealircd rehash";
+        }
+}
+*** <<<MODULE MANAGER END>>>
+*/
+
+#include "unrealircd.h"
+
+RPC_CALL_FUNC(rpc_servernotice);
+
+ModuleHeader MOD_HEADER = {
+	"third/rpc-servernotice",
+	"1.0",
+	"Send server notices to users via RPC",
+	"Valware",
+	"unrealircd-6"
+};
+
+MOD_INIT()
+{
+    RPCHandlerInfo r;
+
+	memset(&r, 0, sizeof(r));
+	r.method = "servernotice.send";
+	r.loglevel = ULOG_DEBUG;
+	r.call = rpc_servernotice;
+	if (!RPCHandlerAdd(modinfo->handle, &r))
+	{
+		config_error("[third/rpc-servernotice] Could not register RPC handler 'servernotice.send'");
+		return MOD_FAILED;
+	}
+    return MOD_SUCCESS;
+}
+
+MOD_LOAD()
+{
+    return MOD_SUCCESS;
+}
+
+MOD_UNLOAD()
+{
+    return MOD_SUCCESS;
+}
+
+RPC_CALL_FUNC(rpc_servernotice)
+{
+    json_t *result = json_object();  // initialize result
+    Client *target;
+    const char *nick, *msg;
+    int as_privmsg;
+
+    REQUIRE_PARAM_STRING("nick", nick);
+    REQUIRE_PARAM_STRING("msg", msg);
+    OPTIONAL_PARAM_BOOLEAN("as_privmsg", as_privmsg, 0);
+
+    target = find_client(nick, NULL);
+    if (!target)
+    {
+        rpc_error(client, request, JSON_RPC_ERROR_NOT_FOUND, "Nickname not found");
+        json_decref(result);
+        return;
+    }
+
+    char *msg_copy = strdup(msg);
+    if (!msg_copy)
+    {
+        rpc_error(client, request, JSON_RPC_ERROR_INTERNAL_ERROR, "Memory allocation failed");
+        json_decref(result);
+        return;
+    }
+
+    char *saveptr = NULL;
+    char *line = strtok_r(msg_copy, "\\n", &saveptr);
+
+    while (line)
+    {
+        // skip empty lines
+        if (*line != '\0')
+        {
+            if (!as_privmsg)
+                sendnotice(target, "%s", line);
+            else
+            {
+                const char *parx[4];
+                MessageTag *mtags;
+                new_message(&me, NULL, &mtags);
+                sendto_one(target, mtags, ":%s PRIVMSG %s :%s", me.name, target->name, line);
+                free_message_tags(mtags);
+            }
+        }
+        line = strtok_r(NULL, "\\n", &saveptr);
+    }
+
+    free(msg_copy);
+
+    rpc_response(client, request, result);
+    json_decref(result);
+}
+