midori/extensions/formhistory.c

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/*
Copyright (C) 2009 Alexander Butenko <a.butenka@gmail.com>
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Copyright (C) 2009 Christian Dywan <christian@twotoasts.de>
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This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
*/
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#define MAXCHARS 60
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#define MINCHARS 2
#include <midori/midori.h>
#include "config.h"
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#include "midori/sokoke.h"
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#include <glib/gstdio.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <sqlite3.h>
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static GHashTable* global_keys;
static gchar* jsforms;
static gboolean
formhistory_prepare_js ()
{
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gchar* data_name;
gchar* data_path;
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gchar* autosuggest;
gchar* style;
guint i;
gchar* file;
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data_name = g_build_filename (PACKAGE_NAME, "res", NULL);
data_path = sokoke_find_data_filename (data_name);
g_free (data_name);
file = g_build_filename (data_path, G_DIR_SEPARATOR_S, "autosuggestcontrol.js",NULL);
if (!g_file_get_contents (file, &autosuggest, NULL, NULL))
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return FALSE;
g_strchomp (autosuggest);
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file = g_build_filename (data_path, G_DIR_SEPARATOR_S, "autosuggestcontrol.css",NULL);
if(!g_file_get_contents (file, &style, NULL, NULL))
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return FALSE;
g_strchomp (style);
i = 0;
while (style[i])
{
if (style[i] == '\n')
style[i] = ' ';
i++;
}
jsforms = g_strdup_printf (
"%s"
"window.addEventListener ('DOMContentLoaded',"
"function () {"
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" if (document.getElementById('formhistory'))"
" return;"
" if (!initSuggestions ())"
" return;"
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" var mystyle = document.createElement('style');"
" mystyle.setAttribute('type', 'text/css');"
" mystyle.setAttribute('id', 'formhistory');"
" mystyle.appendChild(document.createTextNode('%s'));"
" var head = document.getElementsByTagName('head')[0];"
" if (head) head.appendChild(mystyle);"
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"}, true);",
autosuggest,
style);
g_strstrip (jsforms);
g_free (data_path);
g_free (file);
g_free (style);
g_free (autosuggest);
return TRUE;
}
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static gchar*
formhistory_fixup_value (char* value)
{
guint i = 0;
g_strchomp (value);
while (value[i])
{
if (value[i] == '\n')
value[i] = ' ';
else if (value[i] == '"')
value[i] = '\'';
i++;
}
return value;
}
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static gchar*
formhistory_build_js ()
{
gchar* suggestions = g_strdup ("");
GHashTableIter iter;
gpointer key, value;
gchar* script;
g_hash_table_iter_init (&iter, global_keys);
while (g_hash_table_iter_next (&iter, &key, &value))
{
gchar* _suggestions = g_strdup_printf ("%s arr[\"%s\"] = [%s]; ",
suggestions, (char*)key, (char*)value);
katze_assign (suggestions, _suggestions);
}
script = g_strdup_printf ("function FormSuggestions(eid) { "
"arr = new Array();"
"%s"
"this.suggestions = arr[eid]; }"
"%s",
suggestions,
jsforms);
g_free (suggestions);
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return script;
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}
static void
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formhistory_update_database (gpointer db,
const gchar* key,
const gchar* value)
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{
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gchar* sqlcmd;
gchar* errmsg;
gint success;
sqlcmd = sqlite3_mprintf ("INSERT INTO forms VALUES"
"('%q', '%q', '%q')",
NULL, key, value);
success = sqlite3_exec (db, sqlcmd, NULL, NULL, &errmsg);
sqlite3_free (sqlcmd);
if (success != SQLITE_OK)
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{
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g_printerr (_("Failed to add form value: %s\n"), errmsg);
g_free (errmsg);
return;
}
}
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static gboolean
formhistory_update_main_hash (gchar* key,
gchar* value)
{
guint length;
gchar* tmp;
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if (!(value && *value))
return FALSE;
length = strlen (value);
if (length > MAXCHARS || length < MINCHARS)
return FALSE;
formhistory_fixup_value (key);
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formhistory_fixup_value (value);
if ((tmp = g_hash_table_lookup (global_keys, (gpointer)key)))
{
gchar* rvalue = g_strdup_printf ("\"%s\"",value);
gchar* patt = g_regex_escape_string (rvalue, -1);
if (!g_regex_match_simple (patt, tmp,
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G_REGEX_CASELESS, G_REGEX_MATCH_NOTEMPTY))
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{
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gchar* new_value = g_strdup_printf ("%s%s,", tmp, rvalue);
g_hash_table_insert (global_keys, g_strdup (key), new_value);
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g_free (rvalue);
g_free (patt);
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}
else
{
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g_free (rvalue);
g_free (patt);
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return FALSE;
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}
}
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else
{
gchar* new_value = g_strdup_printf ("\"%s\",",value);
g_hash_table_replace (global_keys, g_strdup (key), new_value);
}
return TRUE;
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}
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#if WEBKIT_CHECK_VERSION (1, 1, 4)
static gboolean
formhistory_navigation_decision_cb (WebKitWebView* web_view,
WebKitWebFrame* web_frame,
WebKitNetworkRequest* request,
WebKitWebNavigationAction* action,
WebKitWebPolicyDecision* decision,
MidoriExtension* extension)
{
/* The script returns form data in the form "field_name|,|value|,|field_type".
We are handling only input fields with 'text' or 'password' type.
The field separator is "|||" */
const gchar* script = "function dumpForm (inputs) {"
" var out = '';"
" for (i=0;i<inputs.length;i++) {"
" if (inputs[i].getAttribute('autocomplete') == 'off')"
" continue;"
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" if (inputs[i].value && (inputs[i].type == 'text' || inputs[i].type == 'password')) {"
" var ename = inputs[i].getAttribute('name');"
" var eid = inputs[i].getAttribute('id');"
" if (!ename && eid)"
" ename=eid;"
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" if (inputs[i].getAttribute('autocomplete') != 'off')"
" out += ename+'|,|'+inputs[i].value +'|,|'+inputs[i].type +'|||';"
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" }"
" }"
" return out;"
"}"
"dumpForm (document.getElementsByTagName('input'))";
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if (webkit_web_navigation_action_get_reason (action) == WEBKIT_WEB_NAVIGATION_REASON_FORM_SUBMITTED)
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{
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JSContextRef js_context = webkit_web_frame_get_global_context (web_frame);
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gchar* value = sokoke_js_script_eval (js_context, script, NULL);
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if (value && *value)
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{
gpointer db = g_object_get_data (G_OBJECT (extension), "formhistory-db");
gchar** inputs = g_strsplit (value, "|||", 0);
guint i = 0;
while (inputs[i] != NULL)
{
gchar** parts = g_strsplit (inputs[i], "|,|", 3);
if (parts && parts[0] && parts[1] && parts[2])
{
/* FIXME: We need to handle passwords */
if (strcmp (parts[2], "password"))
{
if (formhistory_update_main_hash (parts[0], parts[1]))
formhistory_update_database (db, parts[0], parts[1]);
}
}
g_strfreev (parts);
i++;
}
g_strfreev (inputs);
g_free (value);
}
}
return FALSE;
}
#else
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static void
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formhistory_feed_keys (GHashTable* keys,
gpointer db)
{
GHashTableIter iter;
gchar* key;
gchar* value;
g_hash_table_iter_init (&iter, keys);
while (g_hash_table_iter_next (&iter, (gpointer)&key, (gpointer)&value))
{
if (formhistory_update_main_hash (key, value))
formhistory_update_database (db, key, value);
}
}
static void
formhistory_session_request_queued_cb (SoupSession* session,
SoupMessage* msg,
MidoriExtension* extension)
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{
gchar* method = katze_object_get_string (msg, "method");
if (method && !strncmp (method, "POST", 4))
{
SoupMessageBody* body = msg->request_body;
if (soup_message_body_get_accumulate (body))
{
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SoupBuffer* buffer;
GHashTable* keys;
gpointer db;
buffer = soup_message_body_flatten (body);
keys = soup_form_decode (body->data);
db = g_object_get_data (G_OBJECT (extension), "formhistory-db");
formhistory_feed_keys (keys, db);
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soup_buffer_free (buffer);
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g_hash_table_destroy (keys);
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}
}
g_free (method);
}
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#endif
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static void
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formhistory_window_object_cleared_cb (WebKitWebView* web_view,
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WebKitWebFrame* web_frame,
JSContextRef js_context,
JSObjectRef js_window)
{
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gchar* script;
script = formhistory_build_js ();
sokoke_js_script_eval (js_context, script, NULL);
g_free (script);
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}
static void
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formhistory_add_tab_cb (MidoriBrowser* browser,
MidoriView* view,
MidoriExtension* extension)
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{
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GtkWidget* web_view = midori_view_get_web_view (view);
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g_signal_connect (web_view, "window-object-cleared",
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G_CALLBACK (formhistory_window_object_cleared_cb), NULL);
#if WEBKIT_CHECK_VERSION (1, 1, 4)
g_signal_connect (web_view, "navigation-policy-decision-requested",
G_CALLBACK (formhistory_navigation_decision_cb), extension);
#else
g_signal_connect (webkit_get_default_session (), "request-queued",
G_CALLBACK (formhistory_session_request_queued_cb), extension);
#endif
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}
static void
formhistory_deactivate_cb (MidoriExtension* extension,
MidoriBrowser* browser);
static void
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formhistory_add_tab_foreach_cb (MidoriView* view,
MidoriBrowser* browser,
MidoriExtension* extension)
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{
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formhistory_add_tab_cb (browser, view, extension);
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}
static void
formhistory_app_add_browser_cb (MidoriApp* app,
MidoriBrowser* browser,
MidoriExtension* extension)
{
midori_browser_foreach (browser,
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(GtkCallback)formhistory_add_tab_foreach_cb, extension);
g_signal_connect (browser, "add-tab",
G_CALLBACK (formhistory_add_tab_cb), extension);
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g_signal_connect (extension, "deactivate",
G_CALLBACK (formhistory_deactivate_cb), browser);
}
static void
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formhistory_deactivate_tabs (MidoriView* view,
MidoriBrowser* browser,
MidoriExtension* extension)
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{
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GtkWidget* web_view = midori_view_get_web_view (view);
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g_signal_handlers_disconnect_by_func (
web_view, formhistory_window_object_cleared_cb, NULL);
#if WEBKIT_CHECK_VERSION (1, 1, 4)
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g_signal_handlers_disconnect_by_func (
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web_view, formhistory_navigation_decision_cb, extension);
#else
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g_signal_handlers_disconnect_by_func (
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webkit_get_default_session (), formhistory_session_request_queued_cb, extension);
#endif
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}
static void
formhistory_deactivate_cb (MidoriExtension* extension,
MidoriBrowser* browser)
{
MidoriApp* app = midori_extension_get_app (extension);
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sqlite3* db;
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g_signal_handlers_disconnect_by_func (
browser, formhistory_add_tab_cb, extension);
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g_signal_handlers_disconnect_by_func (
extension, formhistory_deactivate_cb, browser);
g_signal_handlers_disconnect_by_func (
app, formhistory_app_add_browser_cb, extension);
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midori_browser_foreach (browser,
(GtkCallback)formhistory_deactivate_tabs, extension);
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katze_assign (jsforms, NULL);
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if (global_keys)
g_hash_table_destroy (global_keys);
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if ((db = g_object_get_data (G_OBJECT (extension), "formhistory-db")))
sqlite3_close (db);
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}
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static int
formhistory_add_field (gpointer data,
int argc,
char** argv,
char** colname)
{
gint i;
gint ncols = 3;
/* Test whether have the right number of columns */
g_return_val_if_fail (argc % ncols == 0, 1);
for (i = 0; i < (argc - ncols) + 1; i++)
{
if (argv[i])
{
if (colname[i] && !g_ascii_strcasecmp (colname[i], "domain")
&& colname[i + 1] && !g_ascii_strcasecmp (colname[i + 1], "field")
&& colname[i + 2] && !g_ascii_strcasecmp (colname[i + 2], "value"))
{
gchar* key = argv[i + 1];
formhistory_update_main_hash (g_strdup (key), g_strdup (argv[i + 2]));
}
}
}
return 0;
}
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static void
formhistory_activate_cb (MidoriExtension* extension,
MidoriApp* app)
{
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const gchar* config_dir;
gchar* filename;
sqlite3* db;
char* errmsg = NULL, *errmsg2 = NULL;
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KatzeArray* browsers;
MidoriBrowser* browser;
guint i;
global_keys = g_hash_table_new_full (g_str_hash, g_str_equal,
(GDestroyNotify)g_free,
(GDestroyNotify)g_free);
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if(!jsforms)
formhistory_prepare_js ();
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config_dir = midori_extension_get_config_dir (extension);
katze_mkdir_with_parents (config_dir, 0700);
filename = g_build_filename (config_dir, "forms.db", NULL);
if (sqlite3_open (filename, &db))
{
g_warning (_("Failed to open database: %s\n"), sqlite3_errmsg (db));
sqlite3_close (db);
}
g_free (filename);
if ((sqlite3_exec (db, "CREATE TABLE IF NOT EXISTS "
"forms (domain text, field text, value text)",
NULL, NULL, &errmsg) == SQLITE_OK)
&& (sqlite3_exec (db, "SELECT domain, field, value FROM forms ",
formhistory_add_field,
NULL, &errmsg2) == SQLITE_OK))
g_object_set_data (G_OBJECT (extension), "formhistory-db", db);
else
{
if (errmsg)
{
g_critical (_("Failed to execute database statement: %s\n"), errmsg);
sqlite3_free (errmsg);
if (errmsg2)
{
g_critical (_("Failed to execute database statement: %s\n"), errmsg2);
sqlite3_free (errmsg2);
}
}
sqlite3_close (db);
}
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browsers = katze_object_get_object (app, "browsers");
i = 0;
while ((browser = katze_array_get_nth_item (browsers, i++)))
formhistory_app_add_browser_cb (app, browser, extension);
g_signal_connect (app, "add-browser",
G_CALLBACK (formhistory_app_add_browser_cb), extension);
g_object_unref (browsers);
}
#if G_ENABLE_DEBUG
/*
<html>
<head>
<title>autosuggest testcase</title>
</head>
<body>
<form method=post>
<p><input type="text" id="txt1" /></p>
<p><input type="text" name="txt2" /></p>
<input type=submit>
</form>
</body>
</html> */
#endif
MidoriExtension*
extension_init (void)
{
gboolean should_init = TRUE;
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const gchar* ver;
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gchar* desc;
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MidoriExtension* extension;
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if (formhistory_prepare_js ())
{
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ver = "1.0";
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desc = g_strdup (_("Stores history of entered form data"));
}
else
{
desc = g_strdup_printf (_("Not available: %s"),
_("Resource files not installed"));
ver = NULL;
should_init = FALSE;
}
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extension = g_object_new (MIDORI_TYPE_EXTENSION,
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"name", _("Form history filler"),
"description", desc,
"version", ver,
"authors", "Alexander V. Butenko <a.butenka@gmail.com>",
NULL);
g_free (desc);
if (should_init)
g_signal_connect (extension, "activate",
G_CALLBACK (formhistory_activate_cb), NULL);
return extension;
}