Added stanza send hooks for plugins

11 files changed, 396 insertions, 58 deletions

diff --git a/src/plugins/c_plugins.c b/src/plugins/c_plugins.c
index fbced688..167c6c01 100644
--- a/src/plugins/c_plugins.c
+++ b/src/plugins/c_plugins.c
@@ -97,6 +97,9 @@ c_plugin_create(const char * const filename)
     plugin->post_priv_message_display = c_post_priv_message_display_hook;
     plugin->pre_priv_message_send = c_pre_priv_message_send_hook;
     plugin->post_priv_message_send = c_post_priv_message_send_hook;
+    plugin->on_message_stanza_send = c_on_message_stanza_send_hook;
+    plugin->on_presence_stanza_send = c_on_presence_stanza_send_hook;
+    plugin->on_iq_stanza_send = c_on_iq_stanza_send_hook;
 
     g_string_free(path, TRUE);
     g_free(module_name);
@@ -347,6 +350,48 @@ c_post_priv_message_send_hook(ProfPlugin *plugin, const char * const room, const
     func (room, nick, message);
 }
 
+char *
+c_on_message_stanza_send_hook(ProfPlugin *plugin, const char * const text)
+{
+    void * f = NULL;
+    char* (*func)(const char * const __text);
+    assert (plugin && plugin->module);
+
+    if (NULL == (f = dlsym (plugin->module, "prof_on_message_stanza_send")))
+        return NULL;
+
+    func = (char* (*)(const char * const)) f;
+    return func (text);
+}
+
+char *
+c_on_presence_stanza_send_hook(ProfPlugin *plugin, const char * const text)
+{
+    void * f = NULL;
+    char* (*func)(const char * const __text);
+    assert (plugin && plugin->module);
+
+    if (NULL == (f = dlsym (plugin->module, "prof_on_presence_stanza_send")))
+        return NULL;
+
+    func = (char* (*)(const char * const)) f;
+    return func (text);
+}
+
+char *
+c_on_iq_stanza_send_hook(ProfPlugin *plugin, const char * const text)
+{
+    void * f = NULL;
+    char* (*func)(const char * const __text);
+    assert (plugin && plugin->module);
+
+    if (NULL == (f = dlsym (plugin->module, "prof_on_iq_stanza_send")))
+        return NULL;
+
+    func = (char* (*)(const char * const)) f;
+    return func (text);
+}
+
 void
 c_plugin_destroy(ProfPlugin *plugin)
 {
diff --git a/src/plugins/c_plugins.h b/src/plugins/c_plugins.h
index fd038535..4ddbee89 100644
--- a/src/plugins/c_plugins.h
+++ b/src/plugins/c_plugins.h
@@ -64,4 +64,8 @@ void  c_post_priv_message_display_hook(ProfPlugin *plugin, const char * const ro
 char* c_pre_priv_message_send_hook(ProfPlugin *plugin, const char * const room, const char * const nick, const char * const message);
 void  c_post_priv_message_send_hook(ProfPlugin *plugin, const char * const room, const char * const nick, const char * const message);
 
+char* c_on_message_stanza_send_hook(ProfPlugin *plugin, const char *const text);
+char* c_on_presence_stanza_send_hook(ProfPlugin *plugin, const char *const text);
+char* c_on_iq_stanza_send_hook(ProfPlugin *plugin, const char *const text);
+
 #endif
diff --git a/src/plugins/plugins.c b/src/plugins/plugins.c
index 75fc01d6..9ec3f5c7 100644
--- a/src/plugins/plugins.c
+++ b/src/plugins/plugins.c
@@ -409,6 +409,69 @@ plugins_post_priv_message_send(const char * const jid, const char * const messag
     jid_destroy(jidp);
 }
 
+char*
+plugins_on_message_stanza_send(const char *const text)
+{
+    char *new_stanza = NULL;
+    char *curr_stanza = strdup(text);
+
+    GSList *curr = plugins;
+    while (curr) {
+        ProfPlugin *plugin = curr->data;
+        new_stanza = plugin->on_message_stanza_send(plugin, curr_stanza);
+        if (new_stanza) {
+            free(curr_stanza);
+            curr_stanza = strdup(new_stanza);
+            free(new_stanza);
+        }
+        curr = g_slist_next(curr);
+    }
+
+    return curr_stanza;
+}
+
+char*
+plugins_on_presence_stanza_send(const char *const text)
+{
+    char *new_stanza = NULL;
+    char *curr_stanza = strdup(text);
+
+    GSList *curr = plugins;
+    while (curr) {
+        ProfPlugin *plugin = curr->data;
+        new_stanza = plugin->on_presence_stanza_send(plugin, curr_stanza);
+        if (new_stanza) {
+            free(curr_stanza);
+            curr_stanza = strdup(new_stanza);
+            free(new_stanza);
+        }
+        curr = g_slist_next(curr);
+    }
+
+    return curr_stanza;
+}
+
+char*
+plugins_on_iq_stanza_send(const char *const text)
+{
+    char *new_stanza = NULL;
+    char *curr_stanza = strdup(text);
+
+    GSList *curr = plugins;
+    while (curr) {
+        ProfPlugin *plugin = curr->data;
+        new_stanza = plugin->on_iq_stanza_send(plugin, curr_stanza);
+        if (new_stanza) {
+            free(curr_stanza);
+            curr_stanza = strdup(new_stanza);
+            free(new_stanza);
+        }
+        curr = g_slist_next(curr);
+    }
+
+    return curr_stanza;
+}
+
 void
 plugins_shutdown(void)
 {
diff --git a/src/plugins/plugins.h b/src/plugins/plugins.h
index 3abd70b2..0e5fa823 100644
--- a/src/plugins/plugins.h
+++ b/src/plugins/plugins.h
@@ -70,6 +70,9 @@ typedef struct prof_plugin_t {
     char* (*pre_priv_message_send)(struct prof_plugin_t* plugin, const char * const room, const char * const nick, const char * const message);
     void  (*post_priv_message_send)(struct prof_plugin_t* plugin, const char * const room, const char * const nick, const char * const message);
 
+    char* (*on_message_stanza_send)(struct prof_plugin_t* plugin, const char *const text);
+    char* (*on_presence_stanza_send)(struct prof_plugin_t* plugin, const char *const text);
+    char* (*on_iq_stanza_send)(struct prof_plugin_t* plugin, const char *const text);
 } ProfPlugin;
 
 void plugins_init(void);
@@ -100,12 +103,16 @@ void  plugins_post_priv_message_display(const char * const jid, const char *mess
 char* plugins_pre_priv_message_send(const char * const jid, const char * const message);
 void  plugins_post_priv_message_send(const char * const jid, const char * const message);
 
+void plugins_win_process_line(char *win, const char * const line);
+
+char* plugins_on_message_stanza_send(const char *const text);
+char* plugins_on_presence_stanza_send(const char *const text);
+char* plugins_on_iq_stanza_send(const char *const text);
+
 gboolean plugins_run_command(const char * const cmd);
 void plugins_run_timed(void);
 GList* plugins_get_command_names(void);
 gchar * plugins_get_dir(void);
 CommandHelp* plugins_get_help(const char *const cmd);
 
-void plugins_win_process_line(char *win, const char * const line);
-
 #endif
diff --git a/src/plugins/python_plugins.c b/src/plugins/python_plugins.c
index 588bd0ef..0aef2e8f 100644
--- a/src/plugins/python_plugins.c
+++ b/src/plugins/python_plugins.c
@@ -115,6 +115,9 @@ python_plugin_create(const char * const filename)
         plugin->post_priv_message_display = python_post_priv_message_display_hook;
         plugin->pre_priv_message_send = python_pre_priv_message_send_hook;
         plugin->post_priv_message_send = python_post_priv_message_send_hook;
+        plugin->on_message_stanza_send = python_on_message_stanza_send_hook;
+        plugin->on_presence_stanza_send = python_on_presence_stanza_send_hook;
+        plugin->on_iq_stanza_send = python_on_iq_stanza_send_hook;
         g_free(module_name);
 
         allow_python_threads();
@@ -568,6 +571,114 @@ python_post_priv_message_send_hook(ProfPlugin *plugin, const char * const room,
     allow_python_threads();
 }
 
+char*
+python_on_message_stanza_send_hook(ProfPlugin *plugin, const char *const text)
+{
+    disable_python_threads();
+    PyObject *p_args = Py_BuildValue("(s)", text);
+    PyObject *p_function;
+
+    PyObject *p_module = plugin->module;
+    if (PyObject_HasAttrString(p_module, "prof_on_message_stanza_send")) {
+        p_function = PyObject_GetAttrString(p_module, "prof_on_message_stanza_send");
+        python_check_error();
+        if (p_function && PyCallable_Check(p_function)) {
+            PyObject *result = PyObject_CallObject(p_function, p_args);
+            python_check_error();
+            Py_XDECREF(p_function);
+            if (PyUnicode_Check(result)) {
+                char *result_str = strdup(PyString_AsString(PyUnicode_AsUTF8String(result)));
+                Py_XDECREF(result);
+                allow_python_threads();
+                return result_str;
+            } else if (result != Py_None) {
+                char *result_str = strdup(PyString_AsString(result));
+                Py_XDECREF(result);
+                allow_python_threads();
+                return result_str;
+            } else {
+                allow_python_threads();
+                return NULL;
+            }
+        }
+    }
+
+    allow_python_threads();
+    return NULL;
+}
+
+char*
+python_on_presence_stanza_send_hook(ProfPlugin *plugin, const char *const text)
+{
+    disable_python_threads();
+    PyObject *p_args = Py_BuildValue("(s)", text);
+    PyObject *p_function;
+
+    PyObject *p_module = plugin->module;
+    if (PyObject_HasAttrString(p_module, "prof_on_presence_stanza_send")) {
+        p_function = PyObject_GetAttrString(p_module, "prof_on_presence_stanza_send");
+        python_check_error();
+        if (p_function && PyCallable_Check(p_function)) {
+            PyObject *result = PyObject_CallObject(p_function, p_args);
+            python_check_error();
+            Py_XDECREF(p_function);
+            if (PyUnicode_Check(result)) {
+                char *result_str = strdup(PyString_AsString(PyUnicode_AsUTF8String(result)));
+                Py_XDECREF(result);
+                allow_python_threads();
+                return result_str;
+            } else if (result != Py_None) {
+                char *result_str = strdup(PyString_AsString(result));
+                Py_XDECREF(result);
+                allow_python_threads();
+                return result_str;
+            } else {
+                allow_python_threads();
+                return NULL;
+            }
+        }
+    }
+
+    allow_python_threads();
+    return NULL;
+}
+
+char*
+python_on_iq_stanza_send_hook(ProfPlugin *plugin, const char *const text)
+{
+    disable_python_threads();
+    PyObject *p_args = Py_BuildValue("(s)", text);
+    PyObject *p_function;
+
+    PyObject *p_module = plugin->module;
+    if (PyObject_HasAttrString(p_module, "prof_on_iq_stanza_send")) {
+        p_function = PyObject_GetAttrString(p_module, "prof_on_iq_stanza_send");
+        python_check_error();
+        if (p_function && PyCallable_Check(p_function)) {
+            PyObject *result = PyObject_CallObject(p_function, p_args);
+            python_check_error();
+            Py_XDECREF(p_function);
+            if (PyUnicode_Check(result)) {
+                char *result_str = strdup(PyString_AsString(PyUnicode_AsUTF8String(result)));
+                Py_XDECREF(result);
+                allow_python_threads();
+                return result_str;
+            } else if (result != Py_None) {
+                char *result_str = strdup(PyString_AsString(result));
+                Py_XDECREF(result);
+                allow_python_threads();
+                return result_str;
+            } else {
+                allow_python_threads();
+                return NULL;
+            }
+        }
+    }
+
+    allow_python_threads();
+    return NULL;
+}
+
 void
 python_check_error(void)
 {
diff --git a/src/plugins/python_plugins.h b/src/plugins/python_plugins.h
index 24700731..68c611b1 100644
--- a/src/plugins/python_plugins.h
+++ b/src/plugins/python_plugins.h
@@ -64,5 +64,8 @@ void  python_post_priv_message_display_hook(ProfPlugin *plugin, const char * con
 char* python_pre_priv_message_send_hook(ProfPlugin *plugin, const char * const room, const char * const nick, const char * const message);
 void  python_post_priv_message_send_hook(ProfPlugin *plugin, const char * const room, const char * const nick, const char * const message);
 
+char* python_on_message_stanza_send_hook(ProfPlugin *plugin, const char *const text);
+char* python_on_presence_stanza_send_hook(ProfPlugin *plugin, const char *const text);
+char* python_on_iq_stanza_send_hook(ProfPlugin *plugin, const char *const text);
 
 #endif
diff --git a/src/xmpp/bookmark.c b/src/xmpp/bookmark.c
index d0103299..ae628c53 100644
--- a/src/xmpp/bookmark.c
+++ b/src/xmpp/bookmark.c
@@ -56,6 +56,7 @@
 #include "xmpp/xmpp.h"
 #include "xmpp/bookmark.h"
 #include "ui/ui.h"
+#include "plugins/plugins.h"
 
 #define BOOKMARK_TIMEOUT 5000
 
@@ -70,6 +71,8 @@ static void _bookmark_item_destroy(gpointer item);
 static int _match_bookmark_by_jid(gconstpointer a, gconstpointer b);
 static void _send_bookmarks(void);
 
+static void _send_iq_stanza(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza);
+
 void
 bookmark_request(void)
 {
@@ -92,7 +95,7 @@ bookmark_request(void)
 
     iq = stanza_create_bookmarks_storage_request(ctx);
     xmpp_stanza_set_id(iq, id);
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -474,6 +477,21 @@ _send_bookmarks(void)
     xmpp_stanza_release(storage);
     xmpp_stanza_release(query);
 
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
+
+static void
+_send_iq_stanza(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza)
+{
+    char *text;
+    size_t text_size;
+    xmpp_stanza_to_text(stanza, &text, &text_size);
+
+    char *plugin_text = plugins_on_iq_stanza_send(text);
+    if (plugin_text) {
+        xmpp_send_raw(conn, plugin_text, strlen(plugin_text));
+    } else {
+        xmpp_send_raw(conn, text, text_size);
+    }
+}
diff --git a/src/xmpp/iq.c b/src/xmpp/iq.c
index 7a052633..dbfcdede 100644
--- a/src/xmpp/iq.c
+++ b/src/xmpp/iq.c
@@ -63,6 +63,7 @@
 #include "xmpp/form.h"
 #include "roster_list.h"
 #include "xmpp/xmpp.h"
+#include "plugins/plugins.h"
 
 #define HANDLE(ns, type, func) xmpp_handler_add(conn, func, ns, STANZA_NAME_IQ, type, ctx)
 
@@ -98,6 +99,8 @@ static int _caps_response_handler(xmpp_conn_t *const conn, xmpp_stanza_t *const
 static int _caps_response_handler_for_jid(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza, void *const userdata);
 static int _caps_response_handler_legacy(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza, void *const userdata);
 
+static void _send_iq_stanza(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza);
+
 static gboolean autoping_wait = FALSE;
 static GTimer *autoping_time = NULL;
 
@@ -179,7 +182,7 @@ iq_room_list_request(gchar *conferencejid)
     xmpp_conn_t * const conn = connection_get_conn();
     xmpp_ctx_t * const ctx = connection_get_ctx();
     xmpp_stanza_t *iq = stanza_create_disco_items_iq(ctx, "confreq", conferencejid);
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -193,7 +196,7 @@ iq_enable_carbons(void)
 
     xmpp_id_handler_add(conn, _enable_carbons_handler, id, NULL);
 
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -207,7 +210,7 @@ iq_disable_carbons(void)
 
     xmpp_id_handler_add(conn, _disable_carbons_handler, id, NULL);
 
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -223,7 +226,7 @@ iq_disco_info_request(gchar *jid)
 
     free(id);
 
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -239,7 +242,7 @@ iq_last_activity_request(gchar *jid)
 
     free(id);
 
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -259,7 +262,7 @@ iq_room_info_request(const char *const room, gboolean display_result)
 
     free(id);
 
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -288,7 +291,7 @@ iq_send_caps_request_for_jid(const char *const to, const char *const id,
 
     xmpp_id_handler_add(conn, _caps_response_handler_for_jid, id, strdup(to));
 
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -315,7 +318,7 @@ iq_send_caps_request(const char *const to, const char *const id,
 
     xmpp_id_handler_add(conn, _caps_response_handler, id, NULL);
 
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -342,7 +345,7 @@ iq_send_caps_request_legacy(const char *const to, const char *const id,
     xmpp_id_handler_add(conn, _caps_response_handler_legacy, id, node_str->str);
     g_string_free(node_str, FALSE);
 
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -352,7 +355,7 @@ iq_disco_items_request(gchar *jid)
     xmpp_conn_t * const conn = connection_get_conn();
     xmpp_ctx_t * const ctx = connection_get_ctx();
     xmpp_stanza_t *iq = stanza_create_disco_items_iq(ctx, "discoitemsreq", jid);
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -366,7 +369,7 @@ iq_send_software_version(const char *const fulljid)
     char *id = xmpp_stanza_get_id(iq);
     xmpp_id_handler_add(conn, _version_result_handler, id, strdup(fulljid));
 
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -376,7 +379,7 @@ iq_confirm_instant_room(const char *const room_jid)
     xmpp_conn_t * const conn = connection_get_conn();
     xmpp_ctx_t * const ctx = connection_get_ctx();
     xmpp_stanza_t *iq = stanza_create_instant_room_request_iq(ctx, room_jid);
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -390,7 +393,7 @@ iq_destroy_room(const char *const room_jid)
     char *id = xmpp_stanza_get_id(iq);
     xmpp_id_handler_add(conn, _destroy_room_result_handler, id, NULL);
 
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -404,7 +407,7 @@ iq_request_room_config_form(const char *const room_jid)
     char *id = xmpp_stanza_get_id(iq);
     xmpp_id_handler_add(conn, _room_config_handler, id, NULL);
 
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -418,7 +421,7 @@ iq_submit_room_config(const char *const room, DataForm *form)
     char *id = xmpp_stanza_get_id(iq);
     xmpp_id_handler_add(conn, _room_config_submit_handler, id, NULL);
 
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -428,7 +431,7 @@ iq_room_config_cancel(const char *const room_jid)
     xmpp_conn_t * const conn = connection_get_conn();
     xmpp_ctx_t * const ctx = connection_get_ctx();
     xmpp_stanza_t *iq = stanza_create_room_config_cancel_iq(ctx, room_jid);
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -442,7 +445,7 @@ iq_room_affiliation_list(const char *const room, char *affiliation)
     char *id = xmpp_stanza_get_id(iq);
     xmpp_id_handler_add(conn, _room_affiliation_list_result_handler, id, strdup(affiliation));
 
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -456,7 +459,7 @@ iq_room_kick_occupant(const char *const room, const char *const nick, const char
     char *id = xmpp_stanza_get_id(iq);
     xmpp_id_handler_add(conn, _room_kick_result_handler, id, strdup(nick));
 
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -481,7 +484,7 @@ iq_room_affiliation_set(const char *const room, const char *const jid, char *aff
 
     xmpp_id_handler_add(conn, _room_affiliation_set_result_handler, id, affiliation_set);
 
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -501,7 +504,7 @@ iq_room_role_set(const char *const room, const char *const nick, char *role,
 
     xmpp_id_handler_add(conn, _room_role_set_result_handler, id, role_set);
 
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -515,7 +518,7 @@ iq_room_role_list(const char *const room, char *role)
     char *id = xmpp_stanza_get_id(iq);
     xmpp_id_handler_add(conn, _room_role_list_result_handler, id, strdup(role));
 
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -530,7 +533,7 @@ iq_send_ping(const char *const target)
     GDateTime *now = g_date_time_new_now_local();
     xmpp_id_handler_add(conn, _manual_pong_handler, id, now);
 
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -900,7 +903,7 @@ _autoping_timed_handler(xmpp_conn_t *const conn, void *const userdata)
     // add pong handler
     xmpp_id_handler_add(conn, _auto_pong_handler, id, ctx);
 
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
     autoping_wait = TRUE;
     if (autoping_time) {
@@ -1039,7 +1042,7 @@ _ping_get_handler(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza,
         xmpp_stanza_set_attribute(pong, STANZA_ATTR_ID, id);
     }
 
-    xmpp_send(conn, pong);
+    _send_iq_stanza(conn, pong);
     xmpp_stanza_release(pong);
 
     return 1;
@@ -1099,7 +1102,7 @@ _version_get_handler(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza,
         xmpp_stanza_add_child(query, version);
         xmpp_stanza_add_child(response, query);
 
-        xmpp_send(conn, response);
+        _send_iq_stanza(conn, response);
 
         g_string_free(version_str, TRUE);
         xmpp_stanza_release(name_txt);
@@ -1137,7 +1140,7 @@ _disco_items_get_handler(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza,
         xmpp_stanza_set_name(query, STANZA_NAME_QUERY);
         xmpp_stanza_set_ns(query, XMPP_NS_DISCO_ITEMS);
         xmpp_stanza_add_child(response, query);
-        xmpp_send(conn, response);
+        _send_iq_stanza(conn, response);
 
         xmpp_stanza_release(response);
     }
@@ -1175,7 +1178,7 @@ _last_activity_get_handler(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza,
         xmpp_stanza_add_child(response, query);
         xmpp_stanza_release(query);
 
-        xmpp_send(conn, response);
+        _send_iq_stanza(conn, response);
 
         xmpp_stanza_release(response);
     } else {
@@ -1199,7 +1202,7 @@ _last_activity_get_handler(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza,
         xmpp_stanza_add_child(response, error);
         xmpp_stanza_release(error);
 
-        xmpp_send(conn, response);
+        _send_iq_stanza(conn, response);
 
         xmpp_stanza_release(response);
     }
@@ -1236,7 +1239,7 @@ _disco_info_get_handler(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza,
             xmpp_stanza_set_attribute(query, STANZA_ATTR_NODE, node_str);
         }
         xmpp_stanza_add_child(response, query);
-        xmpp_send(conn, response);
+        _send_iq_stanza(conn, response);
 
         xmpp_stanza_release(query);
         xmpp_stanza_release(response);
@@ -1833,3 +1836,18 @@ _disco_items_result_handler(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza
 
     return 1;
 }
+
+static void
+_send_iq_stanza(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza)
+{
+    char *text;
+    size_t text_size;
+    xmpp_stanza_to_text(stanza, &text, &text_size);
+
+    char *plugin_text = plugins_on_iq_stanza_send(text);
+    if (plugin_text) {
+        xmpp_send_raw(conn, plugin_text, strlen(plugin_text));
+    } else {
+        xmpp_send_raw(conn, text, text_size);
+    }
+}
diff --git a/src/xmpp/message.c b/src/xmpp/message.c
index 6e3e7721..66046307 100644
--- a/src/xmpp/message.c
+++ b/src/xmpp/message.c
@@ -58,6 +58,7 @@
 #include "xmpp/stanza.h"
 #include "xmpp/xmpp.h"
 #include "pgp/gpg.h"
+#include "plugins/plugins.h"
 
 #define HANDLE(ns, type, func) xmpp_handler_add(conn, func, ns, STANZA_NAME_MESSAGE, type, ctx)
 
@@ -68,6 +69,7 @@ static int _conference_handler(xmpp_conn_t *const conn, xmpp_stanza_t *const sta
 static int _captcha_handler(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza, void *const userdata);
 static int _message_error_handler(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza, void *const userdata);
 static int _receipt_received_handler(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza, void *const userdata);
+static void _send_message_stanza(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza);
 
 void
 message_add_handlers(void)
@@ -139,7 +141,7 @@ message_send_chat(const char *const barejid, const char *const msg)
         stanza_attach_receipt_request(ctx, message);
     }
 
-    xmpp_send(conn, message);
+    _send_message_stanza(conn, message);
     xmpp_stanza_release(message);
 
     return id;
@@ -195,7 +197,7 @@ message_send_chat_pgp(const char *const barejid, const char *const msg)
         stanza_attach_receipt_request(ctx, message);
     }
 
-    xmpp_send(conn, message);
+    _send_message_stanza(conn, message);
     xmpp_stanza_release(message);
 
     return id;
@@ -226,7 +228,7 @@ message_send_chat_otr(const char *const barejid, const char *const msg)
         stanza_attach_receipt_request(ctx, message);
     }
 
-    xmpp_send(conn, message);
+    _send_message_stanza(conn, message);
     xmpp_stanza_release(message);
 
     return id;
@@ -241,7 +243,7 @@ message_send_private(const char *const fulljid, const char *const msg)
     xmpp_stanza_t *message = stanza_create_message(ctx, id, fulljid, STANZA_TYPE_CHAT, msg);
     free(id);
 
-    xmpp_send(conn, message);
+    _send_message_stanza(conn, message);
     xmpp_stanza_release(message);
 }
 
@@ -254,7 +256,7 @@ message_send_groupchat(const char *const roomjid, const char *const msg)
     xmpp_stanza_t *message = stanza_create_message(ctx, id, roomjid, STANZA_TYPE_GROUPCHAT, msg);
     free(id);
 
-    xmpp_send(conn, message);
+    _send_message_stanza(conn, message);
     xmpp_stanza_release(message);
 }
 
@@ -265,7 +267,7 @@ message_send_groupchat_subject(const char *const roomjid, const char *const subj
     xmpp_ctx_t * const ctx = connection_get_ctx();
     xmpp_stanza_t *message = stanza_create_room_subject_message(ctx, roomjid, subject);
 
-    xmpp_send(conn, message);
+    _send_message_stanza(conn, message);
     xmpp_stanza_release(message);
 }
 
@@ -288,7 +290,7 @@ message_send_invite(const char *const roomjid, const char *const contact,
         stanza = stanza_create_mediated_invite(ctx, roomjid, contact, reason);
     }
 
-    xmpp_send(conn, stanza);
+    _send_message_stanza(conn, stanza);
     xmpp_stanza_release(stanza);
 }
 
@@ -299,7 +301,7 @@ message_send_composing(const char *const jid)
     xmpp_ctx_t * const ctx = connection_get_ctx();
 
     xmpp_stanza_t *stanza = stanza_create_chat_state(ctx, jid, STANZA_NAME_COMPOSING);
-    xmpp_send(conn, stanza);
+    _send_message_stanza(conn, stanza);
     xmpp_stanza_release(stanza);
 
 }
@@ -310,7 +312,7 @@ message_send_paused(const char *const jid)
     xmpp_conn_t * const conn = connection_get_conn();
     xmpp_ctx_t * const ctx = connection_get_ctx();
     xmpp_stanza_t *stanza = stanza_create_chat_state(ctx, jid, STANZA_NAME_PAUSED);
-    xmpp_send(conn, stanza);
+    _send_message_stanza(conn, stanza);
     xmpp_stanza_release(stanza);
 }
 
@@ -321,7 +323,7 @@ message_send_inactive(const char *const jid)
     xmpp_ctx_t * const ctx = connection_get_ctx();
     xmpp_stanza_t *stanza = stanza_create_chat_state(ctx, jid, STANZA_NAME_INACTIVE);
 
-    xmpp_send(conn, stanza);
+    _send_message_stanza(conn, stanza);
     xmpp_stanza_release(stanza);
 }
 
@@ -331,7 +333,7 @@ message_send_gone(const char *const jid)
     xmpp_conn_t * const conn = connection_get_conn();
     xmpp_ctx_t * const ctx = connection_get_ctx();
     xmpp_stanza_t *stanza = stanza_create_chat_state(ctx, jid, STANZA_NAME_GONE);
-    xmpp_send(conn, stanza);
+    _send_message_stanza(conn, stanza);
     xmpp_stanza_release(stanza);
 }
 
@@ -601,7 +603,7 @@ _message_send_receipt(const char *const fulljid, const char *const message_id)
     xmpp_stanza_add_child(message, receipt);
     xmpp_stanza_release(receipt);
 
-    xmpp_send(conn, message);
+    _send_message_stanza(conn, message);
     xmpp_stanza_release(message);
 }
 
@@ -830,3 +832,18 @@ _chat_handler(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza, void *const
     jid_destroy(jid);
     return 1;
 }
+
+static void
+_send_message_stanza(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza)
+{
+    char *text;
+    size_t text_size;
+    xmpp_stanza_to_text(stanza, &text, &text_size);
+
+    char *plugin_text = plugins_on_message_stanza_send(text);
+    if (plugin_text) {
+        xmpp_send_raw(conn, plugin_text, strlen(plugin_text));
+    } else {
+        xmpp_send_raw(conn, text, text_size);
+    }
+}
diff --git a/src/xmpp/presence.c b/src/xmpp/presence.c
index fc723c03..c3b351b4 100644
--- a/src/xmpp/presence.c
+++ b/src/xmpp/presence.c
@@ -59,6 +59,7 @@
 #include "xmpp/connection.h"
 #include "xmpp/stanza.h"
 #include "xmpp/xmpp.h"
+#include "plugins/plugins.h"
 
 static Autocomplete sub_requests_ac;
 
@@ -75,6 +76,9 @@ static int _presence_error_handler(xmpp_conn_t *const conn, xmpp_stanza_t *const
 void _send_caps_request(char *node, char *caps_key, char *id, char *from);
 static void _send_room_presence(xmpp_conn_t *conn, xmpp_stanza_t *presence);
 
+static void _send_presence_stanza(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza);
+static void _send_iq_stanza(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza);
+
 void
 presence_sub_requests_init(void)
 {
@@ -134,7 +138,7 @@ presence_subscription(const char *const jid, const jabber_subscr_t action)
     xmpp_stanza_set_name(presence, STANZA_NAME_PRESENCE);
     xmpp_stanza_set_type(presence, type);
     xmpp_stanza_set_attribute(presence, STANZA_ATTR_TO, jidp->barejid);
-    xmpp_send(conn, presence);
+    _send_presence_stanza(conn, presence);
     xmpp_stanza_release(presence);
 
     jid_destroy(jidp);
@@ -239,7 +243,7 @@ presence_send(const resource_presence_t presence_type, const char *const msg, co
         stanza_attach_last_activity(ctx, presence, idle);
     }
     stanza_attach_caps(ctx, presence);
-    xmpp_send(conn, presence);
+    _send_presence_stanza(conn, presence);
     _send_room_presence(conn, presence);
     xmpp_stanza_release(presence);
 
@@ -269,7 +273,7 @@ _send_room_presence(xmpp_conn_t *conn, xmpp_stanza_t *presence)
 
             xmpp_stanza_set_attribute(presence, STANZA_ATTR_TO, full_room_jid);
             log_debug("Sending presence to room: %s", full_room_jid);
-            xmpp_send(conn, presence);
+            _send_presence_stanza(conn, presence);
             free(full_room_jid);
         }
 
@@ -302,7 +306,7 @@ presence_join_room(char *room, char *nick, char * passwd)
     stanza_attach_priority(ctx, presence, pri);
     stanza_attach_caps(ctx, presence);
 
-    xmpp_send(conn, presence);
+    _send_presence_stanza(conn, presence);
     xmpp_stanza_release(presence);
 
     jid_destroy(jid);
@@ -332,7 +336,7 @@ presence_change_room_nick(const char *const room, const char *const nick)
     stanza_attach_priority(ctx, presence, pri);
     stanza_attach_caps(ctx, presence);
 
-    xmpp_send(conn, presence);
+    _send_presence_stanza(conn, presence);
     xmpp_stanza_release(presence);
 
     free(full_room_jid);
@@ -351,7 +355,7 @@ presence_leave_chat_room(const char *const room_jid)
     if (nick) {
         xmpp_stanza_t *presence = stanza_create_room_leave_presence(ctx, room_jid,
             nick);
-        xmpp_send(conn, presence);
+        _send_presence_stanza(conn, presence);
         xmpp_stanza_release(presence);
     }
 }
@@ -649,7 +653,7 @@ _send_caps_request(char *node, char *caps_key, char *id, char *from)
         if (!caps_contains(caps_key)) {
             log_debug("Capabilities not cached for '%s', sending discovery IQ.", from);
             xmpp_stanza_t *iq = stanza_create_disco_info_iq(ctx, id, from, node);
-            xmpp_send(conn, iq);
+            _send_iq_stanza(conn, iq);
             xmpp_stanza_release(iq);
         } else {
             log_debug("Capabilities already cached, for %s", caps_key);
@@ -811,3 +815,33 @@ _muc_user_handler(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza, void *co
 
     return 1;
 }
+
+static void
+_send_presence_stanza(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza)
+{
+    char *text;
+    size_t text_size;
+    xmpp_stanza_to_text(stanza, &text, &text_size);
+
+    char *plugin_text = plugins_on_presence_stanza_send(text);
+    if (plugin_text) {
+        xmpp_send_raw(conn, plugin_text, strlen(plugin_text));
+    } else {
+        xmpp_send_raw(conn, text, text_size);
+    }
+}
+
+static void
+_send_iq_stanza(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza)
+{
+    char *text;
+    size_t text_size;
+    xmpp_stanza_to_text(stanza, &text, &text_size);
+
+    char *plugin_text = plugins_on_iq_stanza_send(text);
+    if (plugin_text) {
+        xmpp_send_raw(conn, plugin_text, strlen(plugin_text));
+    } else {
+        xmpp_send_raw(conn, text, text_size);
+    }
+}
diff --git a/src/xmpp/roster.c b/src/xmpp/roster.c
index 0890fad5..03081cdc 100644
--- a/src/xmpp/roster.c
+++ b/src/xmpp/roster.c
@@ -60,6 +60,7 @@
 #include "roster_list.h"
 #include "xmpp/stanza.h"
 #include "xmpp/xmpp.h"
+#include "plugins/plugins.h"
 
 #define HANDLE(type, func) xmpp_handler_add(conn, func, XMPP_NS_ROSTER, STANZA_NAME_IQ, type, ctx)
 
@@ -77,6 +78,8 @@ static int _roster_result_handler(xmpp_conn_t *const conn, xmpp_stanza_t *const
 static int _group_add_handler(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza, void *const userdata);
 static int _group_remove_handler(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza, void *const userdata);
 
+static void _send_iq_stanza(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza);
+
 // helper functions
 GSList* _get_groups_from_item(xmpp_stanza_t *item);
 
@@ -96,7 +99,7 @@ roster_request(void)
     xmpp_conn_t * const conn = connection_get_conn();
     xmpp_ctx_t * const ctx = connection_get_ctx();
     xmpp_stanza_t *iq = stanza_create_roster_iq(ctx);
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -108,7 +111,7 @@ roster_send_add_new(const char *const barejid, const char *const name)
     char *id = create_unique_id("roster");
     xmpp_stanza_t *iq = stanza_create_roster_set(ctx, id, barejid, name, NULL);
     free(id);
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -118,7 +121,7 @@ roster_send_remove(const char *const barejid)
     xmpp_conn_t * const conn = connection_get_conn();
     xmpp_ctx_t * const ctx = connection_get_ctx();
     xmpp_stanza_t *iq = stanza_create_roster_remove_set(ctx, barejid);
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -130,7 +133,7 @@ roster_send_name_change(const char *const barejid, const char *const new_name, G
     char *id = create_unique_id("roster");
     xmpp_stanza_t *iq = stanza_create_roster_set(ctx, id, barejid, new_name, groups);
     free(id);
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
 }
 
@@ -160,7 +163,7 @@ roster_send_add_to_group(const char *const group, PContact contact)
     xmpp_id_handler_add(conn, _group_add_handler, unique_id, data);
     xmpp_stanza_t *iq = stanza_create_roster_set(ctx, unique_id, p_contact_barejid(contact),
         p_contact_name(contact), new_groups);
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
     free(unique_id);
 }
@@ -207,7 +210,7 @@ roster_send_remove_from_group(const char *const group, PContact contact)
     xmpp_id_handler_add(conn, _group_remove_handler, unique_id, data);
     xmpp_stanza_t *iq = stanza_create_roster_set(ctx, unique_id, p_contact_barejid(contact),
         p_contact_name(contact), new_groups);
-    xmpp_send(conn, iq);
+    _send_iq_stanza(conn, iq);
     xmpp_stanza_release(iq);
     free(unique_id);
 }
@@ -358,3 +361,18 @@ _get_groups_from_item(xmpp_stanza_t *item)
 
     return groups;
 }
+
+static void
+_send_iq_stanza(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza)
+{
+    char *text;
+    size_t text_size;
+    xmpp_stanza_to_text(stanza, &text, &text_size);
+
+    char *plugin_text = plugins_on_iq_stanza_send(text);
+    if (plugin_text) {
+        xmpp_send_raw(conn, plugin_text, strlen(plugin_text));
+    } else {
+        xmpp_send_raw(conn, text, text_size);
+    }
+}