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netsurf/content/handlers/html/form.c
Vincent Sanders 61891ada50 validate the form button element type attribute as per spec 
https://html.spec.whatwg.org/multipage/form-elements.html#attr-button-type
says if the type attribute is anything but "reset" or "button" it
 is of "submit" type. The previous logic was incorrect and only used
 the button if its type was explicitly submit and noting else.
2019-02-22 21:11:34 +00:00

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/*
* Copyright 2004 James Bursa <bursa@users.sourceforge.net>
* Copyright 2003 Phil Mellor <monkeyson@users.sourceforge.net>
* Copyright 2004 John Tytgat <joty@netsurf-browser.org>
* Copyright 2005-9 John-Mark Bell <jmb@netsurf-browser.org>
* Copyright 2009 Paul Blokus <paul_pl@users.sourceforge.net>
* Copyright 2010 Michael Drake <tlsa@netsurf-browser.org>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* NetSurf is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* \file
* Form handling functions (implementation).
*/
#include <assert.h>
#include <limits.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <dom/dom.h>
#include "utils/corestrings.h"
#include "utils/log.h"
#include "utils/messages.h"
#include "utils/talloc.h"
#include "utils/url.h"
#include "utils/utf8.h"
#include "utils/ascii.h"
#include "netsurf/browser_window.h"
#include "netsurf/mouse.h"
#include "netsurf/plotters.h"
#include "netsurf/misc.h"
#include "content/fetch.h"
#include "content/hlcache.h"
#include "css/utils.h"
#include "desktop/knockout.h"
#include "desktop/scrollbar.h"
#include "desktop/textarea.h"
#include "desktop/gui_internal.h"
#include "html/box.h"
#include "html/font.h"
#include "html/form_internal.h"
#include "html/html.h"
#include "html/html_internal.h"
#include "html/layout.h"
#define MAX_SELECT_HEIGHT 210
#define SELECT_LINE_SPACING 0.2
#define SELECT_BORDER_WIDTH 1
#define SELECT_SELECTED_COLOUR 0xDB9370
struct form_select_menu {
int line_height;
int width, height;
struct scrollbar *scrollbar;
int f_size;
bool scroll_capture;
select_menu_redraw_callback callback;
void *client_data;
struct content *c;
};
static plot_style_t plot_style_fill_selected = {
.fill_type = PLOT_OP_TYPE_SOLID,
.fill_colour = SELECT_SELECTED_COLOUR,
};
static plot_font_style_t plot_fstyle_entry = {
.family = PLOT_FONT_FAMILY_SANS_SERIF,
.weight = 400,
.flags = FONTF_NONE,
.background = 0xffffff,
.foreground = 0x000000,
};
static char *form_acceptable_charset(struct form *form);
static char *form_encode_item(const char *item, uint32_t len, const char *charset,
const char *fallback);
static void form_select_menu_clicked(struct form_control *control,
int x, int y);
static void form_select_menu_scroll_callback(void *client_data,
struct scrollbar_msg_data *scrollbar_data);
/* exported interface documented in html/form_internal.h */
struct form *form_new(void *node, const char *action, const char *target,
form_method method, const char *charset,
const char *doc_charset)
{
struct form *form;
form = calloc(1, sizeof *form);
if (!form)
return NULL;
form->action = strdup(action != NULL ? action : "");
if (form->action == NULL) {
free(form);
return NULL;
}
form->target = target != NULL ? strdup(target) : NULL;
if (target != NULL && form->target == NULL) {
free(form->action);
free(form);
return NULL;
}
form->method = method;
form->accept_charsets = charset != NULL ? strdup(charset) : NULL;
if (charset != NULL && form->accept_charsets == NULL) {
free(form->target);
free(form->action);
free(form);
return NULL;
}
form->document_charset = doc_charset != NULL ? strdup(doc_charset)
: NULL;
if (doc_charset && form->document_charset == NULL) {
free(form->accept_charsets);
free(form->target);
free(form->action);
free(form);
return NULL;
}
form->node = node;
return form;
}
/* exported interface documented in html/form_internal.h */
void form_free(struct form *form)
{
struct form_control *c, *d;
for (c = form->controls; c != NULL; c = d) {
d = c->next;
form_free_control(c);
}
free(form->action);
free(form->target);
free(form->accept_charsets);
free(form->document_charset);
free(form);
}
/* exported interface documented in html/form_internal.h */
struct form_control *form_new_control(void *node, form_control_type type)
{
struct form_control *control;
control = calloc(1, sizeof *control);
if (control == NULL)
return NULL;
control->node = node;
control->type = type;
return control;
}
/**
* Add a control to the list of controls in a form.
*
* \param form The form to add the control to
* \param control The control to add
*/
void form_add_control(struct form *form, struct form_control *control)
{
if (form == NULL) {
return;
}
control->form = form;
if (form->controls != NULL) {
assert(form->last_control);
form->last_control->next = control;
control->prev = form->last_control;
control->next = NULL;
form->last_control = control;
} else {
form->controls = form->last_control = control;
}
}
/**
* Free a struct form_control.
*
* \param control structure to free
*/
void form_free_control(struct form_control *control)
{
struct form_control *c;
assert(control != NULL);
NSLOG(netsurf, INFO, "Control:%p name:%p value:%p initial:%p",
control, control->name, control->value, control->initial_value);
free(control->name);
free(control->value);
free(control->initial_value);
if (control->type == GADGET_SELECT) {
struct form_option *option, *next;
for (option = control->data.select.items; option;
option = next) {
next = option->next;
NSLOG(netsurf, INFO,
"select option:%p text:%p value:%p", option,
option->text, option->value);
free(option->text);
free(option->value);
free(option);
}
if (control->data.select.menu != NULL) {
form_free_select_menu(control);
}
}
if (control->type == GADGET_TEXTAREA ||
control->type == GADGET_TEXTBOX ||
control->type == GADGET_PASSWORD) {
if (control->data.text.initial != NULL) {
dom_string_unref(control->data.text.initial);
}
if (control->data.text.ta != NULL) {
textarea_destroy(control->data.text.ta);
}
}
/* unlink the control from the form */
if (control->form != NULL) {
for (c = control->form->controls; c != NULL; c = c->next) {
if (c->next == control) {
c->next = control->next;
if (control->form->last_control == control)
control->form->last_control = c;
break;
}
if (c == control) {
/* can only happen if control was first control */
control->form->controls = control->next;
if (control->form->last_control == control)
control->form->controls =
control->form->last_control = NULL;
break;
}
}
}
free(control);
}
/**
* Add an option to a form select control.
*
* \param control form control of type GADGET_SELECT
* \param value value of option, used directly (not copied)
* \param text text for option, used directly (not copied)
* \param selected this option is selected
* \param node the DOM node this option is associated with
* \return true on success, false on memory exhaustion
*/
bool form_add_option(struct form_control *control, char *value, char *text,
bool selected, void *node)
{
struct form_option *option;
assert(control);
assert(control->type == GADGET_SELECT);
option = calloc(1, sizeof *option);
if (!option)
return false;
option->value = value;
option->text = text;
/* add to linked list */
if (control->data.select.items == 0)
control->data.select.items = option;
else
control->data.select.last_item->next = option;
control->data.select.last_item = option;
/* set selected */
if (selected && (control->data.select.num_selected == 0 ||
control->data.select.multiple)) {
option->selected = option->initial_selected = true;
control->data.select.num_selected++;
control->data.select.current = option;
}
control->data.select.num_items++;
option->node = node;
return true;
}
/** string allocation size for numeric values in multipart data */
#define FETCH_DATA_INT_VALUE_SIZE 20
/**
* append split key name and integer value to a multipart data list
*
* \param name key name
* \param ksfx key name suffix
* \param value The value to encode
* \param fetch_data_next_ptr The multipart data list to append to.
*/
static nserror
fetch_data_list_add_sname(const char *name,
const char *ksfx,
int value,
struct fetch_multipart_data ***fetch_data_next_ptr)
{
struct fetch_multipart_data *fetch_data;
int keysize;
fetch_data = calloc(1, sizeof(*fetch_data));
if (fetch_data == NULL) {
NSLOG(netsurf, INFO, "failed allocation for fetch data");
return NSERROR_NOMEM;
}
/* key name */
keysize = snprintf(fetch_data->name, 0, "%s%s", name, ksfx);
fetch_data->name = malloc(keysize + 1); /* allow for null */
if (fetch_data->name == NULL) {
free(fetch_data);
NSLOG(netsurf, INFO,
"keyname allocation failure for %s%s", name, ksfx);
return NSERROR_NOMEM;
}
snprintf(fetch_data->name, keysize + 1, "%s%s", name, ksfx);
/* value */
fetch_data->value = malloc(FETCH_DATA_INT_VALUE_SIZE);
if (fetch_data->value == NULL) {
free(fetch_data->name);
free(fetch_data);
NSLOG(netsurf, INFO, "value allocation failure");
return NSERROR_NOMEM;
}
snprintf(fetch_data->value, FETCH_DATA_INT_VALUE_SIZE, "%d", value);
/* link into list */
**fetch_data_next_ptr = fetch_data;
*fetch_data_next_ptr = &fetch_data->next;
return NSERROR_OK;
}
/**
* append DOM string name/value pair to a multipart data list
*
* \param name key name
* \param value the value to associate with the key
* \param rawfile the raw file value to associate with the key.
* \param form_charset The form character set
* \param docu_charset The document character set for fallback
* \param fetch_data_next_ptr The multipart data list being constructed.
* \return NSERROR_OK on success or appropriate error code.
*/
static nserror
fetch_data_list_add(dom_string *name,
dom_string *value,
const char *rawfile,
const char *form_charset,
const char *docu_charset,
struct fetch_multipart_data ***fetch_data_next_ptr)
{
struct fetch_multipart_data *fetch_data;
assert(name != NULL);
fetch_data = calloc(1, sizeof(*fetch_data));
if (fetch_data == NULL) {
NSLOG(netsurf, INFO, "failed allocation for fetch data");
return NSERROR_NOMEM;
}
fetch_data->name = form_encode_item(dom_string_data(name),
dom_string_byte_length(name),
form_charset,
docu_charset);
if (fetch_data->name == NULL) {
NSLOG(netsurf, INFO, "Could not encode name for fetch data");
free(fetch_data);
return NSERROR_NOMEM;
}
if (value == NULL) {
fetch_data->value = strdup("");
} else {
fetch_data->value = form_encode_item(dom_string_data(value),
dom_string_byte_length(value),
form_charset,
docu_charset);
}
if (fetch_data->value == NULL) {
NSLOG(netsurf, INFO, "Could not encode value for fetch data");
free(fetch_data->name);
free(fetch_data);
return NSERROR_NOMEM;
}
/* deal with raw file name */
if (rawfile != NULL) {
fetch_data->file = true;
fetch_data->rawfile = strdup(rawfile);
if (fetch_data->rawfile == NULL) {
NSLOG(netsurf, INFO,
"Could not encode rawfile value for fetch data");
free(fetch_data->value);
free(fetch_data->name);
free(fetch_data);
return NSERROR_NOMEM;
}
}
/* link into list */
**fetch_data_next_ptr = fetch_data;
*fetch_data_next_ptr = &fetch_data->next;
return NSERROR_OK;
}
/**
* process form HTMLTextAreaElement into multipart data.
*
* \param text_area_element The form select DOM element to convert.
* \param form_charset The form character set
* \param doc_charset The document character set for fallback
* \param fetch_data_next_ptr The multipart data list being constructed.
* \return NSERROR_OK on success or appropriate error code.
*/
static nserror
form_dom_to_data_textarea(dom_html_text_area_element *text_area_element,
const char *form_charset,
const char *doc_charset,
struct fetch_multipart_data ***fetch_data_next_ptr)
{
dom_exception exp; /* the result from DOM operations */
bool element_disabled;
dom_string *inputname;
dom_string *inputvalue;
nserror res;
/* check if element is disabled */
exp = dom_html_text_area_element_get_disabled(text_area_element,
&element_disabled);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO,
"Could not get text area disabled property. exp %d", exp);
return NSERROR_DOM;
}
if (element_disabled) {
/* allow enumeration to continue after disabled element */
return NSERROR_OK;
}
/* obtain name property */
exp = dom_html_text_area_element_get_name(text_area_element,
&inputname);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO,
"Could not get text area name property. exp %d", exp);
return NSERROR_DOM;
}
if (inputname == NULL) {
/* allow enumeration to continue after element with no name */
return NSERROR_OK;
}
/* obtain text area value */
exp = dom_html_text_area_element_get_value(text_area_element,
&inputvalue);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO,
"Could not get text area content. exp %d", exp);
dom_string_unref(inputname);
return NSERROR_DOM;
}
/* add key/value pair to fetch data list */
res = fetch_data_list_add(inputname,
inputvalue,
NULL,
form_charset,
doc_charset,
fetch_data_next_ptr);
dom_string_unref(inputvalue);
dom_string_unref(inputname);
return res;
}
static nserror
form_dom_to_data_select_option(dom_html_option_element *option_element,
dom_string *keyname,
const char *form_charset,
const char *docu_charset,
struct fetch_multipart_data ***fetch_data_next_ptr)
{
nserror res;
dom_exception exp; /* the result from DOM operations */
dom_string *value;
bool selected;
exp = dom_html_option_element_get_selected(option_element, &selected);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO, "Could not get option selected property");
return NSERROR_DOM;
}
if (!selected) {
/* unselected options do not add fetch data entries */
return NSERROR_OK;
}
exp = dom_html_option_element_get_value(option_element, &value);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO, "Could not get option value");
return NSERROR_DOM;
}
/* add key/value pair to fetch data list */
res = fetch_data_list_add(keyname,
value,
NULL,
form_charset,
docu_charset,
fetch_data_next_ptr);
dom_string_unref(value);
return res;
}
/**
* process form HTMLSelectElement into multipart data.
*
* \param select_element The form select DOM element to convert.
* \param form_charset The form character set
* \param doc_charset The document character set for fallback
* \param fetch_data_next_ptr The multipart data list being constructed.
* \return NSERROR_OK on success or appropriate error code.
*/
static nserror
form_dom_to_data_select(dom_html_select_element *select_element,
const char *form_charset,
const char *doc_charset,
struct fetch_multipart_data ***fetch_data_next_ptr)
{
nserror res = NSERROR_OK;
dom_exception exp; /* the result from DOM operations */
bool element_disabled;
dom_string *inputname;
dom_html_options_collection *options = NULL;
uint32_t options_count;
uint32_t option_index;
dom_node *option_element = NULL;
/* check if element is disabled */
exp = dom_html_select_element_get_disabled(select_element,
&element_disabled);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO,
"Could not get select disabled property. exp %d", exp);
return NSERROR_DOM;
}
if (element_disabled) {
/* allow enumeration to continue after disabled element */
return NSERROR_OK;
}
/* obtain name property */
exp = dom_html_select_element_get_name(select_element, &inputname);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO,
"Could not get select name property. exp %d", exp);
return NSERROR_DOM;
}
if (inputname == NULL) {
/* allow enumeration to continue after element with no name */
return NSERROR_OK;
}
/* get options collection */
exp = dom_html_select_element_get_options(select_element, &options);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO,
"Could not get select options collection");
dom_string_unref(inputname);
return NSERROR_DOM;
}
/* get options collection length */
exp = dom_html_options_collection_get_length(options, &options_count);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO,
"Could not get select options collection length");
dom_html_options_collection_unref(options);
dom_string_unref(inputname);
return NSERROR_DOM;
}
/* iterate over options collection */
for (option_index = 0; option_index < options_count; ++option_index) {
exp = dom_html_options_collection_item(options,
option_index,
&option_element);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO,
"Could not get options item %d", option_index);
res = NSERROR_DOM;
} else {
res = form_dom_to_data_select_option(
(dom_html_option_element *)option_element,
inputname,
form_charset,
doc_charset,
fetch_data_next_ptr);
dom_node_unref(option_element);
}
if (res != NSERROR_OK) {
break;
}
}
dom_html_options_collection_unref(options);
dom_string_unref(inputname);
return res;
}
static nserror
form_dom_to_data_input_submit(dom_html_input_element *input_element,
dom_string *inputname,
const char *charset,
const char *document_charset,
dom_html_element **submit_button,
struct fetch_multipart_data ***fetch_data_next_ptr)
{
dom_exception exp; /* the result from DOM operations */
dom_string *inputvalue;
nserror res;
if (*submit_button == NULL) {
/* caller specified no button so use this one */
*submit_button = (dom_html_element *)input_element;
} else if (*submit_button != (dom_html_element *)input_element) {
return NSERROR_OK;
}
/* matched button used to submit form */
exp = dom_html_input_element_get_value(input_element, &inputvalue);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO, "Could not get submit button value");
return NSERROR_DOM;
}
/* add key/value pair to fetch data list */
res = fetch_data_list_add(inputname,
inputvalue,
NULL,
charset,
document_charset,
fetch_data_next_ptr);
dom_string_unref(inputvalue);
return res;
}
static nserror
form_dom_to_data_input_image(dom_html_input_element *input_element,
dom_string *inputname,
const char *charset,
const char *document_charset,
dom_html_element **submit_button,
struct fetch_multipart_data ***fetch_data_next_ptr)
{
nserror res;
dom_exception exp; /* the result from DOM operations */
struct image_input_coords *coords;
char *basename;
/* Only use an image input if it was the thing which activated us */
if (*submit_button != (dom_html_element *)input_element) {
return NSERROR_OK;
}
exp = dom_node_get_user_data((dom_node *)input_element,
corestring_dom___ns_key_image_coords_node_data,
&coords);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO, "Could not get image XY data");
return NSERROR_DOM;
}
if (coords == NULL) {
NSLOG(netsurf, INFO, "No XY data on the image input");
return NSERROR_DOM;
}
/* encode input name once */
basename = form_encode_item(dom_string_data(inputname),
dom_string_byte_length(inputname),
charset,
document_charset);
if (basename == NULL) {
NSLOG(netsurf, INFO, "Could not encode basename");
return NSERROR_NOMEM;
}
res = fetch_data_list_add_sname(basename, ".x",
coords->x,
fetch_data_next_ptr);
if (res == NSERROR_OK) {
res = fetch_data_list_add_sname(basename, ".y",
coords->y,
fetch_data_next_ptr);
}
free(basename);
return res;
}
static nserror
form_dom_to_data_input_checkbox(dom_html_input_element *input_element,
dom_string *inputname,
const char *charset,
const char *document_charset,
struct fetch_multipart_data ***fetch_data_next_ptr)
{
nserror res;
dom_exception exp; /* the result from DOM operations */
bool checked;
dom_string *inputvalue;
exp = dom_html_input_element_get_checked(input_element, &checked);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO,
"Could not get input element checked");
return NSERROR_DOM;
}
if (!checked) {
/* unchecked items do not generate a data entry */
return NSERROR_OK;
}
exp = dom_html_input_element_get_value(input_element, &inputvalue);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO,
"Could not get input element value");
return NSERROR_DOM;
}
/* ensure a default value */
if (inputvalue == NULL) {
inputvalue = dom_string_ref(corestring_dom_on);
}
/* add key/value pair to fetch data list */
res = fetch_data_list_add(inputname,
inputvalue,
NULL,
charset,
document_charset,
fetch_data_next_ptr);
dom_string_unref(inputvalue);
return res;
}
static nserror
form_dom_to_data_input_file(dom_html_input_element *input_element,
dom_string *inputname,
const char *charset,
const char *document_charset,
struct fetch_multipart_data ***fetch_data_next_ptr)
{
nserror res;
dom_exception exp; /* the result from DOM operations */
dom_string *inputvalue;
const char *rawfile = NULL;
exp = dom_html_input_element_get_value(input_element, &inputvalue);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO, "Could not get file value");
return NSERROR_DOM;
}
exp = dom_node_get_user_data((dom_node *)input_element,
corestring_dom___ns_key_file_name_node_data,
&rawfile);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO, "Could not get file rawname");
return NSERROR_DOM;
}
if (rawfile == NULL) {
rawfile = "";
}
/* add key/value pair to fetch data list */
res = fetch_data_list_add(inputname,
inputvalue,
rawfile,
charset,
document_charset,
fetch_data_next_ptr);
dom_string_unref(inputvalue);
return res;
}
static nserror
form_dom_to_data_input_text(dom_html_input_element *input_element,
dom_string *inputname,
const char *charset,
const char *document_charset,
struct fetch_multipart_data ***fetch_data_next_ptr)
{
nserror res;
dom_exception exp; /* the result from DOM operations */
dom_string *inputvalue;
exp = dom_html_input_element_get_value(input_element, &inputvalue);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO, "Could not get input value");
return NSERROR_DOM;
}
/* add key/value pair to fetch data list */
res = fetch_data_list_add(inputname,
inputvalue,
NULL,
charset,
document_charset,
fetch_data_next_ptr);
dom_string_unref(inputvalue);
return res;
}
/**
* process form input element into multipart data.
*
* \param input_element The form input DOM element to convert.
* \param charset The form character set
* \param document_charset The document character set for fallback
* \param submit_button The DOM element of the button submitting the form
* \param had_submit A boolean value indicating if the submit button
* has already been processed in the form element enumeration.
* \param fetch_data_next_ptr The multipart data list being constructed.
* \return NSERROR_OK on success or appropriate error code.
*/
static nserror
form_dom_to_data_input(dom_html_input_element *input_element,
const char *charset,
const char *document_charset,
dom_html_element **submit_button,
struct fetch_multipart_data ***fetch_data_next_ptr)
{
dom_exception exp; /* the result from DOM operations */
bool element_disabled;
dom_string *inputname;
dom_string *inputtype;
nserror res;
/* check if element is disabled */
exp = dom_html_input_element_get_disabled(input_element,
&element_disabled);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO,
"Could not get input disabled property. exp %d", exp);
return NSERROR_DOM;
}
if (element_disabled) {
/* disabled element requires no more processing */
return NSERROR_OK;
}
/* obtain name property */
exp = dom_html_input_element_get_name(input_element, &inputname);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO,
"Could not get input name property. exp %d", exp);
return NSERROR_DOM;
}
if (inputname == NULL) {
/* element with no name is not converted */
return NSERROR_OK;
}
/* get input type */
exp = dom_html_input_element_get_type(input_element, &inputtype);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO, "Could not get input element type");
dom_string_unref(inputname);
return NSERROR_DOM;
}
/* process according to input element type */
if (dom_string_caseless_isequal(inputtype, corestring_dom_submit)) {
res = form_dom_to_data_input_submit(input_element,
inputname,
charset,
document_charset,
submit_button,
fetch_data_next_ptr);
} else if (dom_string_caseless_isequal(inputtype,
corestring_dom_image)) {
res = form_dom_to_data_input_image(input_element,
inputname,
charset,
document_charset,
submit_button,
fetch_data_next_ptr);
} else if (dom_string_caseless_isequal(inputtype,
corestring_dom_radio) ||
dom_string_caseless_isequal(inputtype,
corestring_dom_checkbox)) {
res = form_dom_to_data_input_checkbox(input_element,
inputname,
charset,
document_charset,
fetch_data_next_ptr);
} else if (dom_string_caseless_isequal(inputtype,
corestring_dom_file)) {
res = form_dom_to_data_input_file(input_element,
inputname,
charset,
document_charset,
fetch_data_next_ptr);
} else if (dom_string_caseless_isequal(inputtype,
corestring_dom_reset) ||
dom_string_caseless_isequal(inputtype,
corestring_dom_button)) {
/* Skip these */
NSLOG(netsurf, INFO, "Skipping RESET and BUTTON");
res = NSERROR_OK;
} else {
/* Everything else is treated as text values */
res = form_dom_to_data_input_text(input_element,
inputname,
charset,
document_charset,
fetch_data_next_ptr);
}
dom_string_unref(inputtype);
dom_string_unref(inputname);
return res;
}
/**
* process form HTMLButtonElement into multipart data.
*
* https://html.spec.whatwg.org/multipage/form-elements.html#the-button-element
*
* \param button_element The form button DOM element to convert.
* \param form_charset The form character set
* \param doc_charset The document character set for fallback
* \param submit_button The DOM element of the button submitting the form
* \param fetch_data_next_ptr The multipart data list being constructed.
* \return NSERROR_OK on success or appropriate error code.
*/
static nserror
form_dom_to_data_button(dom_html_button_element *button_element,
const char *form_charset,
const char *doc_charset,
dom_html_element **submit_button,
struct fetch_multipart_data ***fetch_data_next_ptr)
{
dom_exception exp; /* the result from DOM operations */
bool element_disabled;
dom_string *inputname;
dom_string *inputvalue;
dom_string *inputtype;
nserror res = NSERROR_OK;
/* check if element is disabled */
exp = dom_html_button_element_get_disabled(button_element,
&element_disabled);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO,
"Unable to get disabled property. exp %d", exp);
return NSERROR_DOM;
}
if (element_disabled) {
/* allow enumeration to continue after disabled element */
return NSERROR_OK;
}
/* get the type attribute */
exp = dom_html_button_element_get_type(button_element, &inputtype);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO, "Could not get button element type");
return NSERROR_DOM;
}
/* If the type attribute is "reset" or "button" the element is
* barred from constraint validation. Specification says
* default and invalid values result in submit which will
* be considered.
*/
if (dom_string_caseless_isequal(inputtype, corestring_dom_reset)) {
/* multipart data entry not required for reset type */
dom_string_unref(inputtype);
return NSERROR_OK;
}
if (dom_string_caseless_isequal(inputtype, corestring_dom_button)) {
/* multipart data entry not required for button type */
dom_string_unref(inputtype);
return NSERROR_OK;
}
dom_string_unref(inputtype);
/* only submision button generates an element */
if (*submit_button == NULL) {
/* no submission button selected yet so use this one */
*submit_button = (dom_html_element *)button_element;
}
if (*submit_button != (dom_html_element *)button_element) {
return NSERROR_OK;
}
/* obtain name property */
exp = dom_html_button_element_get_name(button_element, &inputname);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO,
"Could not get button name property. exp %d", exp);
return NSERROR_DOM;
}
if (inputname == NULL) {
/* allow enumeration to continue after element with no name */
return NSERROR_OK;
}
/* get button value and add to fetch data list */
exp = dom_html_button_element_get_value(button_element, &inputvalue);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO, "Could not get submit button value");
res = NSERROR_DOM;
} else {
res = fetch_data_list_add(inputname,
inputvalue,
NULL,
form_charset,
doc_charset,
fetch_data_next_ptr);
dom_string_unref(inputvalue);
}
dom_string_unref(inputname);
return res;
}
/**
* Construct multipart data list from 'successful' controls via the DOM.
*
* All text strings in the successful controls list will be in the charset most
* appropriate for submission. Therefore, no utf8_to_* processing should be
* performed upon them.
*
* \todo The chosen charset needs to be made available such that it can be
* included in the submission request (e.g. in the fetch's Content-Type header)
*
* See HTML 4.01 section 17.13.2.
*
* \note care is taken to abort even if the error is recoverable as it
* is not desirable to submit incomplete form data.
*
* \param[in] form form to search for successful controls
* \param[in] submit_button control used to submit the form, if any
* \param[out] fetch_data_out updated to point to linked list of
* fetch_multipart_data, NULL if no controls
* \return NSERROR_OK on success or appropriate error code
*/
static nserror
form_dom_to_data(struct form *form,
struct form_control *submit_control,
struct fetch_multipart_data **fetch_data_out)
{
nserror res = NSERROR_OK;
char *charset; /* form characterset */
dom_exception exp; /* the result from DOM operations */
dom_html_collection *elements = NULL; /* the dom form elements */
uint32_t element_count; /* the number of elements in the DOM form */
uint32_t element_idx; /* the index of thr enumerated element */
dom_node *element = NULL; /* the DOM form element */
dom_string *nodename = NULL; /* the DOM node name of the element */
struct fetch_multipart_data *fetch_data = NULL; /* fetch data list */
struct fetch_multipart_data **fetch_data_next = &fetch_data;
dom_html_element *submit_button;
/* obtain the submit_button DOM node from the control */
if (submit_control != NULL) {
submit_button = submit_control->node;
} else {
submit_button = NULL;
}
/** \todo Replace this call with something DOMish */
charset = form_acceptable_charset(form);
if (charset == NULL) {
NSLOG(netsurf, INFO, "failed to find charset");
return NSERROR_NOMEM;
}
/* obtain the form elements and count */
exp = dom_html_form_element_get_elements(form->node, &elements);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO, "Could not get form elements");
free(charset);
return NSERROR_DOM;
}
exp = dom_html_collection_get_length(elements, &element_count);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO, "Could not get form element count");
res = NSERROR_DOM;
goto form_dom_to_data_error;
}
for (element_idx = 0; element_idx < element_count; element_idx++) {
/* obtain a form element */
exp = dom_html_collection_item(elements, element_idx, &element);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO,
"retrieving form element %d failed with %d",
element_idx, exp);
res = NSERROR_DOM;
goto form_dom_to_data_error;
}
/* node name from element */
exp = dom_node_get_node_name(element, &nodename);
if (exp != DOM_NO_ERR) {
NSLOG(netsurf, INFO,
"getting element node name %d failed with %d",
element_idx, exp);
dom_node_unref(element);
res = NSERROR_DOM;
goto form_dom_to_data_error;
}
if (dom_string_isequal(nodename, corestring_dom_TEXTAREA)) {
/* Form element is HTMLTextAreaElement */
res = form_dom_to_data_textarea(
(dom_html_text_area_element *)element,
charset,
form->document_charset,
&fetch_data_next);
} else if (dom_string_isequal(nodename, corestring_dom_SELECT)) {
/* Form element is HTMLSelectElement */
res = form_dom_to_data_select(
(dom_html_select_element *)element,
charset,
form->document_charset,
&fetch_data_next);
} else if (dom_string_isequal(nodename, corestring_dom_INPUT)) {
/* Form element is HTMLInputElement */
res = form_dom_to_data_input(
(dom_html_input_element *)element,
charset,
form->document_charset,
&submit_button,
&fetch_data_next);
} else if (dom_string_isequal(nodename, corestring_dom_BUTTON)) {
/* Form element is HTMLButtonElement */
res = form_dom_to_data_button(
(dom_html_button_element *)element,
charset,
form->document_charset,
&submit_button,
&fetch_data_next);
} else {
/* Form element is not handled */
NSLOG(netsurf, INFO,
"Unhandled element type: %*s",
(int)dom_string_byte_length(nodename),
dom_string_data(nodename));
res = NSERROR_DOM;
}
dom_string_unref(nodename);
dom_node_unref(element);
/* abort form element enumeration on error */
if (res != NSERROR_OK) {
goto form_dom_to_data_error;
}
}
*fetch_data_out = fetch_data;
dom_html_collection_unref(elements);
free(charset);
return NSERROR_OK;
form_dom_to_data_error:
fetch_multipart_data_destroy(fetch_data);
dom_html_collection_unref(elements);
free(charset);
return res;
}
/**
* Encode controls using application/x-www-form-urlencoded.
*
* \param[in] form form to which successful controls relate
* \param[in] control linked list of fetch_multipart_data
* \param[out] encoded_out URL-encoded form data
* \return NSERROR_OK on success and \a encoded_out updated else appropriate error code
*/
static nserror
form_url_encode(struct form *form,
struct fetch_multipart_data *control,
char **encoded_out)
{
char *name, *value;
char *s, *s2;
unsigned int len, len1, len_init;
nserror res;
s = malloc(1);
if (s == NULL) {
return NSERROR_NOMEM;
}
s[0] = '\0';
len_init = len = 0;
for (; control; control = control->next) {
res = url_escape(control->name, true, NULL, &name);
if (res != NSERROR_OK) {
free(s);
return res;
}
res = url_escape(control->value, true, NULL, &value);
if (res != NSERROR_OK) {
free(name);
free(s);
return res;
}
/* resize string to allow for new key/value pair,
* equals, amphersand and terminator
*/
len1 = len + strlen(name) + strlen(value) + 2;
s2 = realloc(s, len1 + 1);
if (s2 == NULL) {
free(value);
free(name);
free(s);
return NSERROR_NOMEM;
}
s = s2;
snprintf(s + len, (len1 + 1) - len, "%s=%s&", name, value);
len = len1;
free(name);
free(value);
}
if (len > len_init) {
/* Replace trailing '&' */
s[len - 1] = '\0';
}
*encoded_out = s;
return NSERROR_OK;
}
/**
* Find an acceptable character set encoding with which to submit the form
*
* \param form The form
* \return Pointer to charset name (on heap, caller should free) or NULL
*/
char *form_acceptable_charset(struct form *form)
{
char *temp, *c;
if (!form->accept_charsets) {
/* no accept-charsets attribute for this form */
if (form->document_charset) {
/* document charset present, so use it */
return strdup(form->document_charset);
} else {
/* no document charset, so default to 8859-1 */
return strdup("ISO-8859-1");
}
}
/* make temporary copy of accept-charsets attribute */
temp = strdup(form->accept_charsets);
if (!temp)
return NULL;
/* make it upper case */
for (c = temp; *c; c++) {
*c = ascii_to_upper(*c);
}
/* is UTF-8 specified? */
c = strstr(temp, "UTF-8");
if (c) {
free(temp);
return strdup("UTF-8");
}
/* dispense with temporary copy */
free(temp);
/* according to RFC2070, the accept-charsets attribute of the
* form element contains a space and/or comma separated list */
c = form->accept_charsets;
/** \todo an improvement would be to choose an encoding
* acceptable to the server which covers as much of the input
* values as possible. Additionally, we need to handle the
* case where none of the acceptable encodings cover all the
* textual input values. For now, we just extract the first
* element of the charset list
*/
while (*c && !ascii_is_space(*c)) {
if (*c == ',')
break;
c++;
}
return strndup(form->accept_charsets, c - form->accept_charsets);
}
/**
* Convert a string from UTF-8 to the specified charset
* As a final fallback, this will attempt to convert to ISO-8859-1.
*
* \todo Return charset used?
*
* \param item String to convert
* \param len Length of string to convert
* \param charset Destination charset
* \param fallback Fallback charset (may be NULL),
* used iff converting to charset fails
* \return Pointer to converted string (on heap, caller frees), or NULL
*/
char *
form_encode_item(const char *item,
uint32_t len,
const char *charset,
const char *fallback)
{
nserror err;
char *ret = NULL;
char cset[256];
if (!item || !charset)
return NULL;
snprintf(cset, sizeof cset, "%s//TRANSLIT", charset);
err = utf8_to_enc(item, cset, 0, &ret);
if (err == NSERROR_BAD_ENCODING) {
/* charset not understood, try without transliteration */
snprintf(cset, sizeof cset, "%s", charset);
err = utf8_to_enc(item, cset, len, &ret);
if (err == NSERROR_BAD_ENCODING) {
/* nope, try fallback charset (if any) */
if (fallback) {
snprintf(cset, sizeof cset,
"%s//TRANSLIT", fallback);
err = utf8_to_enc(item, cset, 0, &ret);
if (err == NSERROR_BAD_ENCODING) {
/* and without transliteration */
snprintf(cset, sizeof cset,
"%s", fallback);
err = utf8_to_enc(item, cset, 0, &ret);
}
}
if (err == NSERROR_BAD_ENCODING) {
/* that also failed, use 8859-1 */
err = utf8_to_enc(item, "ISO-8859-1//TRANSLIT",
0, &ret);
if (err == NSERROR_BAD_ENCODING) {
/* and without transliteration */
err = utf8_to_enc(item, "ISO-8859-1",
0, &ret);
}
}
}
}
if (err == NSERROR_NOMEM) {
return NULL;
}
return ret;
}
/* exported interface documented in html/form_internal.h */
bool form_open_select_menu(void *client_data,
struct form_control *control,
select_menu_redraw_callback callback,
struct content *c)
{
int line_height_with_spacing;
struct box *box;
plot_font_style_t fstyle;
int total_height;
struct form_select_menu *menu;
html_content *html = (html_content *)c;
/* if the menu is opened for the first time */
if (control->data.select.menu == NULL) {
menu = calloc(1, sizeof (struct form_select_menu));
if (menu == NULL) {
guit->misc->warning("NoMemory", 0);
return false;
}
control->data.select.menu = menu;
box = control->box;
menu->width = box->width +
box->border[RIGHT].width +
box->border[LEFT].width +
box->padding[RIGHT] + box->padding[LEFT];
font_plot_style_from_css(&html->len_ctx, control->box->style,
&fstyle);
menu->f_size = fstyle.size;
menu->line_height = FIXTOINT(FDIV((FMUL(FLTTOFIX(1.2),
FMUL(nscss_screen_dpi,
INTTOFIX(fstyle.size / PLOT_STYLE_SCALE)))),
F_72));
line_height_with_spacing = menu->line_height +
menu->line_height *
SELECT_LINE_SPACING;
total_height = control->data.select.num_items *
line_height_with_spacing;
menu->height = total_height;
if (menu->height > MAX_SELECT_HEIGHT) {
menu->height = MAX_SELECT_HEIGHT;
}
menu->client_data = client_data;
menu->callback = callback;
if (scrollbar_create(false,
menu->height,
total_height,
menu->height,
control,
form_select_menu_scroll_callback,
&(menu->scrollbar)) != NSERROR_OK) {
free(menu);
return false;
}
menu->c = c;
}
else menu = control->data.select.menu;
menu->callback(client_data, 0, 0, menu->width, menu->height);
return true;
}
/* exported interface documented in html/form_internal.h */
void form_free_select_menu(struct form_control *control)
{
if (control->data.select.menu->scrollbar != NULL)
scrollbar_destroy(control->data.select.menu->scrollbar);
free(control->data.select.menu);
control->data.select.menu = NULL;
}
/* exported interface documented in html/form_internal.h */
bool form_redraw_select_menu(struct form_control *control, int x, int y,
float scale, const struct rect *clip,
const struct redraw_context *ctx)
{
struct box *box;
struct form_select_menu *menu = control->data.select.menu;
struct form_option *option;
int line_height, line_height_with_spacing;
int width, height;
int x0, y0, x1, scrollbar_x, y1, y2, y3;
int item_y;
int text_pos_offset, text_x;
int scrollbar_width = SCROLLBAR_WIDTH;
int i;
int scroll;
int x_cp, y_cp;
struct rect r;
struct rect rect;
nserror res;
box = control->box;
x_cp = x;
y_cp = y;
width = menu->width;
height = menu->height;
line_height = menu->line_height;
line_height_with_spacing = line_height +
line_height * SELECT_LINE_SPACING;
scroll = scrollbar_get_offset(menu->scrollbar);
if (scale != 1.0) {
x *= scale;
y *= scale;
width *= scale;
height *= scale;
scrollbar_width *= scale;
i = scroll / line_height_with_spacing;
scroll -= i * line_height_with_spacing;
line_height *= scale;
line_height_with_spacing *= scale;
scroll *= scale;
scroll += i * line_height_with_spacing;
}
x0 = x;
y0 = y;
x1 = x + width - 1;
y1 = y + height - 1;
scrollbar_x = x1 - scrollbar_width;
r.x0 = x0;
r.y0 = y0;
r.x1 = x1 + 1;
r.y1 = y1 + 1;
res = ctx->plot->clip(ctx, &r);
if (res != NSERROR_OK) {
return false;
}
rect.x0 = x0;
rect.y0 = y0;
rect.x1 = x1;
rect.y1 = y1;
res = ctx->plot->rectangle(ctx, plot_style_stroke_darkwbasec, &rect);
if (res != NSERROR_OK) {
return false;
}
x0 = x0 + SELECT_BORDER_WIDTH;
y0 = y0 + SELECT_BORDER_WIDTH;
x1 = x1 - SELECT_BORDER_WIDTH;
y1 = y1 - SELECT_BORDER_WIDTH;
height = height - 2 * SELECT_BORDER_WIDTH;
r.x0 = x0;
r.y0 = y0;
r.x1 = x1 + 1;
r.y1 = y1 + 1;
res = ctx->plot->clip(ctx, &r);
if (res != NSERROR_OK) {
return false;
}
res = ctx->plot->rectangle(ctx, plot_style_fill_lightwbasec, &r);
if (res != NSERROR_OK) {
return false;
}
option = control->data.select.items;
item_y = line_height_with_spacing;
while (item_y < scroll) {
option = option->next;
item_y += line_height_with_spacing;
}
item_y -= line_height_with_spacing;
text_pos_offset = y - scroll +
(int) (line_height * (0.75 + SELECT_LINE_SPACING));
text_x = x + (box->border[LEFT].width + box->padding[LEFT]) * scale;
plot_fstyle_entry.size = menu->f_size;
while (option && item_y - scroll < height) {
if (option->selected) {
y2 = y + item_y - scroll;
y3 = y + item_y + line_height_with_spacing - scroll;
rect.x0 = x0;
rect.y0 = y0 > y2 ? y0 : y2;
rect.x1 = scrollbar_x + 1;
rect.y1 = y3 < y1 + 1 ? y3 : y1 + 1;
res = ctx->plot->rectangle(ctx, &plot_style_fill_selected, &rect);
if (res != NSERROR_OK) {
return false;
}
}
y2 = text_pos_offset + item_y;
res = ctx->plot->text(ctx,
&plot_fstyle_entry,
text_x, y2,
option->text, strlen(option->text));
if (res != NSERROR_OK) {
return false;
}
item_y += line_height_with_spacing;
option = option->next;
}
res = scrollbar_redraw(menu->scrollbar,
x_cp + menu->width - SCROLLBAR_WIDTH,
y_cp,
clip, scale, ctx);
if (res != NSERROR_OK) {
return false;
}
return true;
}
/**
* Check whether a clipping rectangle is completely contained in the
* select menu.
*
* \param control the select menu to check the clipping rectangle for
* \param scale the current browser window scale
* \param clip the clipping rectangle
* \return true if inside false otherwise
*/
bool form_clip_inside_select_menu(struct form_control *control, float scale,
const struct rect *clip)
{
struct form_select_menu *menu = control->data.select.menu;
int width, height;
width = menu->width;
height = menu->height;
if (scale != 1.0) {
width *= scale;
height *= scale;
}
if (clip->x0 >= 0 && clip->x1 <= width &&
clip->y0 >= 0 && clip->y1 <= height)
return true;
return false;
}
/**
* Process a selection from a form select menu.
*
* \param html The html content handle for the form
* \param control form control with menu
* \param item index of item selected from the menu
* \return NSERROR_OK or appropriate error code.
*/
static nserror form__select_process_selection(html_content *html,
struct form_control *control, int item)
{
struct box *inline_box;
struct form_option *o;
int count;
nserror ret = NSERROR_OK;
assert(control != NULL);
assert(html != NULL);
/** \todo Even though the form code is effectively part of the html
* content handler, poking around inside contents is not good
*/
inline_box = control->box->children->children;
for (count = 0, o = control->data.select.items;
o != NULL;
count++, o = o->next) {
if (!control->data.select.multiple && o->selected) {
o->selected = false;
dom_html_option_element_set_selected(o->node, false);
}
if (count == item) {
if (control->data.select.multiple) {
if (o->selected) {
o->selected = false;
dom_html_option_element_set_selected(
o->node, false);
control->data.select.num_selected--;
} else {
o->selected = true;
dom_html_option_element_set_selected(
o->node, true);
control->data.select.num_selected++;
}
} else {
dom_html_option_element_set_selected(
o->node, true);
o->selected = true;
}
}
if (o->selected) {
control->data.select.current = o;
}
}
talloc_free(inline_box->text);
inline_box->text = 0;
if (control->data.select.num_selected == 0) {
inline_box->text = talloc_strdup(html->bctx,
messages_get("Form_None"));
} else if (control->data.select.num_selected == 1) {
inline_box->text = talloc_strdup(html->bctx,
control->data.select.current->text);
} else {
inline_box->text = talloc_strdup(html->bctx,
messages_get("Form_Many"));
}
if (!inline_box->text) {
ret = NSERROR_NOMEM;
inline_box->length = 0;
} else {
inline_box->length = strlen(inline_box->text);
}
inline_box->width = control->box->width;
html__redraw_a_box(html, control->box);
return ret;
}
/* exported interface documented in netsurf/form.h */
nserror form_select_process_selection(struct form_control *control, int item)
{
assert(control != NULL);
return form__select_process_selection(control->html, control, item);
}
/* exported interface documented in netsurf/form.h */
struct form_option *
form_select_get_option(struct form_control *control, int item)
{
struct form_option *opt;
opt = control->data.select.items;
while ((opt != NULL) && (item > 0)) {
opt = opt->next;
item--;
}
return opt;
}
/* exported interface documented in netsurf/form.h */
char *form_control_get_name(struct form_control *control)
{
return control->name;
}
/* exported interface documented in netsurf/form.h */
nserror form_control_bounding_rect(struct form_control *control, struct rect *r)
{
box_bounds( control->box, r );
return NSERROR_OK;
}
/**
* Handle a click on the area of the currently opened select menu.
*
* \param control the select menu which received the click
* \param x X coordinate of click
* \param y Y coordinate of click
*/
void form_select_menu_clicked(struct form_control *control, int x, int y)
{
struct form_select_menu *menu = control->data.select.menu;
struct form_option *option;
html_content *html = (html_content *)menu->c;
int line_height, line_height_with_spacing;
int item_bottom_y;
int scroll, i;
scroll = scrollbar_get_offset(menu->scrollbar);
line_height = menu->line_height;
line_height_with_spacing = line_height +
line_height * SELECT_LINE_SPACING;
option = control->data.select.items;
item_bottom_y = line_height_with_spacing;
i = 0;
while (option && item_bottom_y < scroll + y) {
item_bottom_y += line_height_with_spacing;
option = option->next;
i++;
}
if (option != NULL) {
form__select_process_selection(html, control, i);
}
menu->callback(menu->client_data, 0, 0, menu->width, menu->height);
}
/**
* Handle mouse action for the currently opened select menu.
*
* \param control the select menu which received the mouse action
* \param mouse current mouse state
* \param x X coordinate of click
* \param y Y coordinate of click
* \return text for the browser status bar or NULL if the menu has
* to be closed
*/
const char *form_select_mouse_action(struct form_control *control,
browser_mouse_state mouse, int x, int y)
{
struct form_select_menu *menu = control->data.select.menu;
int x0, y0, x1, y1, scrollbar_x;
const char *status = NULL;
bool multiple = control->data.select.multiple;
x0 = 0;
y0 = 0;
x1 = menu->width;
y1 = menu->height;
scrollbar_x = x1 - SCROLLBAR_WIDTH;
if (menu->scroll_capture ||
(x > scrollbar_x && x < x1 && y > y0 && y < y1)) {
/* The scroll is currently capturing all events or the mouse
* event is taking place on the scrollbar widget area
*/
x -= scrollbar_x;
return scrollbar_mouse_status_to_message(
scrollbar_mouse_action(menu->scrollbar,
mouse, x, y));
}
if (x > x0 && x < scrollbar_x && y > y0 && y < y1) {
/* over option area */
if (mouse & (BROWSER_MOUSE_CLICK_1 | BROWSER_MOUSE_CLICK_2))
/* button 1 or 2 click */
form_select_menu_clicked(control, x, y);
if (!(mouse & BROWSER_MOUSE_CLICK_1 && !multiple))
/* anything but a button 1 click over a single select
menu */
status = messages_get(control->data.select.multiple ?
"SelectMClick" : "SelectClick");
} else if (!(mouse & (BROWSER_MOUSE_CLICK_1 | BROWSER_MOUSE_CLICK_2)))
/* if not a button 1 or 2 click*/
status = messages_get("SelectClose");
return status;
}
/**
* Handle mouse drag end for the currently opened select menu.
*
* \param control the select menu which received the mouse drag end
* \param mouse current mouse state
* \param x X coordinate of drag end
* \param y Y coordinate of drag end
*/
void form_select_mouse_drag_end(struct form_control *control,
browser_mouse_state mouse, int x, int y)
{
int x0, y0, x1, y1;
int box_x, box_y;
struct box *box;
struct form_select_menu *menu = control->data.select.menu;
box = control->box;
/* Get global coords of scrollbar */
box_coords(box, &box_x, &box_y);
box_x -= box->border[LEFT].width;
box_y += box->height + box->border[BOTTOM].width +
box->padding[BOTTOM] + box->padding[TOP];
/* Get drag end coords relative to scrollbar */
x = x - box_x;
y = y - box_y;
if (menu->scroll_capture) {
x -= menu->width - SCROLLBAR_WIDTH;
scrollbar_mouse_drag_end(menu->scrollbar, mouse, x, y);
return;
}
x0 = 0;
y0 = 0;
x1 = menu->width;
y1 = menu->height;
if (x > x0 && x < x1 - SCROLLBAR_WIDTH && y > y0 && y < y1)
/* handle drag end above the option area like a regular click */
form_select_menu_clicked(control, x, y);
}
/**
* Callback for the select menus scroll
*/
void form_select_menu_scroll_callback(void *client_data,
struct scrollbar_msg_data *scrollbar_data)
{
struct form_control *control = client_data;
struct form_select_menu *menu = control->data.select.menu;
html_content *html = (html_content *)menu->c;
switch (scrollbar_data->msg) {
case SCROLLBAR_MSG_MOVED:
menu->callback(menu->client_data,
0, 0,
menu->width,
menu->height);
break;
case SCROLLBAR_MSG_SCROLL_START:
{
struct rect rect = {
.x0 = scrollbar_data->x0,
.y0 = scrollbar_data->y0,
.x1 = scrollbar_data->x1,
.y1 = scrollbar_data->y1
};
browser_window_set_drag_type(html->bw,
DRAGGING_CONTENT_SCROLLBAR, &rect);
menu->scroll_capture = true;
}
break;
case SCROLLBAR_MSG_SCROLL_FINISHED:
menu->scroll_capture = false;
browser_window_set_drag_type(html->bw,
DRAGGING_NONE, NULL);
break;
default:
break;
}
}
/**
* Get the dimensions of a select menu.
*
* \param control the select menu to get the dimensions of
* \param width gets updated to menu width
* \param height gets updated to menu height
*/
void form_select_get_dimensions(struct form_control *control,
int *width, int *height)
{
*width = control->data.select.menu->width;
*height = control->data.select.menu->height;
}
/**
* Callback for the core select menu.
*/
void form_select_menu_callback(void *client_data,
int x, int y, int width, int height)
{
html_content *html = client_data;
int menu_x, menu_y;
struct box *box;
box = html->visible_select_menu->box;
box_coords(box, &menu_x, &menu_y);
menu_x -= box->border[LEFT].width;
menu_y += box->height + box->border[BOTTOM].width +
box->padding[BOTTOM] +
box->padding[TOP];
content__request_redraw((struct content *)html, menu_x + x, menu_y + y,
width, height);
}
/**
* Set a radio form control and clear the others in the group.
*
* \param radio form control of type GADGET_RADIO
*/
void form_radio_set(struct form_control *radio)
{
struct form_control *control;
assert(radio);
if (!radio->form)
return;
if (radio->selected)
return;
for (control = radio->form->controls; control;
control = control->next) {
if (control->type != GADGET_RADIO)
continue;
if (control == radio)
continue;
if (strcmp(control->name, radio->name) != 0)
continue;
if (control->selected) {
control->selected = false;
dom_html_input_element_set_checked(control->node, false);
html__redraw_a_box(radio->html, control->box);
}
}
radio->selected = true;
dom_html_input_element_set_checked(radio->node, true);
html__redraw_a_box(radio->html, radio->box);
}
/* private interface described in html/form_internal.h */
nserror
form_submit(nsurl *page_url,
struct browser_window *target,
struct form *form,
struct form_control *submit_button)
{
nserror res;
char *data = NULL; /* encoded form data */
struct fetch_multipart_data *success = NULL; /* gcc is incapable of correctly reasoning about use and generates "maybe used uninitialised" warnings */
nsurl *action_url;
nsurl *query_url;
assert(form != NULL);
/* obtain list of controls from DOM */
res = form_dom_to_data(form, submit_button, &success);
if (res != NSERROR_OK) {
return res;
}
/* Decompose action */
res = nsurl_create(form->action, &action_url);
if (res != NSERROR_OK) {
fetch_multipart_data_destroy(success);
return res;
}
switch (form->method) {
case method_GET:
res = form_url_encode(form, success, &data);
if (res == NSERROR_OK) {
/* Replace query segment */
res = nsurl_replace_query(action_url, data, &query_url);
if (res == NSERROR_OK) {
res = browser_window_navigate(target,
query_url,
page_url,
BW_NAVIGATE_HISTORY,
NULL,
NULL,
NULL);
nsurl_unref(query_url);
}
free(data);
}
break;
case method_POST_URLENC:
res = form_url_encode(form, success, &data);
if (res == NSERROR_OK) {
res = browser_window_navigate(target,
action_url,
page_url,
BW_NAVIGATE_HISTORY,
data,
NULL,
NULL);
free(data);
}
break;
case method_POST_MULTIPART:
res = browser_window_navigate(target,
action_url,
page_url,
BW_NAVIGATE_HISTORY,
NULL,
success,
NULL);
break;
}
nsurl_unref(action_url);
fetch_multipart_data_destroy(success);
return res;
}
void form_gadget_update_value(struct form_control *control, char *value)
{
switch (control->type) {
case GADGET_HIDDEN:
case GADGET_TEXTBOX:
case GADGET_TEXTAREA:
case GADGET_PASSWORD:
case GADGET_FILE:
if (control->value != NULL) {
free(control->value);
}
control->value = value;
if (control->node != NULL) {
dom_exception err;
dom_string *str;
err = dom_string_create((uint8_t *)value,
strlen(value), &str);
if (err == DOM_NO_ERR) {
if (control->type == GADGET_TEXTAREA)
err = dom_html_text_area_element_set_value(
(dom_html_text_area_element *)(control->node),
str);
else
err = dom_html_input_element_set_value(
(dom_html_input_element *)(control->node),
str);
dom_string_unref(str);
}
}
break;
default:
/* Do nothing */
break;
}
}
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