2005-09-15 09:58:31 -04:00
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/* Implementation of a login manager for HTML forms */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include "elinks.h"
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#include "bfu/dialog.h"
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#include "config/home.h"
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#include "document/forms.h"
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#include "formhist/dialogs.h"
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#include "formhist/formhist.h"
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2021-08-08 15:25:08 -04:00
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#include "intl/libintl.h"
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2005-09-15 09:58:31 -04:00
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#include "main/module.h"
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#include "main/object.h"
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#include "session/session.h"
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#include "terminal/window.h"
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#include "util/base64.h"
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#include "util/file.h"
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#include "util/lists.h"
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#include "util/secsave.h"
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#include "util/string.h"
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#include "viewer/text/form.h"
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#define FORMS_HISTORY_FILENAME "formhist"
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/* TODO: Remember multiple login for the same form.
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* TODO: Password manager GUI (here?) (in dialogs.c, of course --pasky). */
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bug 764: Initialize the right member of union option_value
INIT_OPTION used to initialize union option_value at compile time by
casting the default value to LIST_OF(struct option) *, which is the
type of the first member. On sparc64 and other big-endian systems
where sizeof(int) < sizeof(struct list_head *), this tended to leave
option->value.number as zero, thus messing up OPT_INT and OPT_BOOL
at least. OPT_LONG however tended to work right.
This would be easy to fix with C99 designated initializers,
but doc/hacking.txt says ELinks must be kept C89 compatible.
Another solution would be to make register_options() read the
value from option->value.tree (the first member), cast it back
to the right type, and write it to the appropriate member;
but that would still require somewhat dubious conversions
between integers, data pointers, and function pointers.
So here's a rather more invasive solution. Add struct option_init,
which is somewhat similar to struct option but has non-overlapping
members for different types of values, to ensure nothing is lost
in compile-time conversions. Move unsigned char *path from struct
option_info to struct option_init, and replace struct option_info
with a union that contains struct option_init and struct option.
Now, this union can be initialized with no portability problems,
and register_options() then moves the values from struct option_init
to their final places in struct option.
In my x86 ELinks build with plenty of options configured in, this
change bloated the text section by 340 bytes but compressed the data
section by 2784 bytes, presumably because union option_info is a
pointer smaller than struct option_info was.
(cherry picked from elinks-0.12 commit e5f6592ee20780a61f70feeb1f9e17631b9c5835)
Conflicts:
src/protocol/fsp/fsp.c: All options had been removed in 0.13.GIT.
src/protocol/smb/smb2.c: Ditto.
2009-08-15 15:39:07 -04:00
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static union option_info forms_history_options[] = {
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2005-09-15 09:58:31 -04:00
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INIT_OPT_BOOL("document.browse.forms", N_("Show form history dialog"),
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2022-01-15 14:10:37 -05:00
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"show_formhist", OPT_ZERO, 0,
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Rewrap lines in option documentation.
Documentation strings of most options used to contain a "\n" at the
end of each source line. When the option manager displayed these
strings, it treated each "\n" as a hard newline. On 80x24 terminals
however, the option description window has only 60 columes available
for the text (with the default setup.h), and the hard newlines were
further apart, so the option manager wrapped the text a second time,
resulting in rather ugly output where long lones are interleaved with
short ones. This could also cause the text to take up too much
vertical space and not fit in the window.
Replace most of those hard newlines with spaces so that the option
manager (or perhaps BFU) will take care of the wrapping. At the same
time, rewrap the strings in source code so that the source lines are
at most 79 columns wide.
In some options though, there is a list of possible values and their
meanings. In those lists, if the description of one value does not
fit in one line, then continuation lines should be indented. The
option manager and BFU are not currently able to do that. So, keep
the hard newlines in those lists, but rewrap them to 60 columns so
that they are less likely to require further wrapping at runtime.
2009-03-07 13:48:38 -05:00
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N_("Ask if a login form should be saved to file or not. "
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"This option only disables the dialog, already saved login "
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2005-09-15 09:58:31 -04:00
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"forms are unaffected.")),
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NULL_OPTION_INFO,
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};
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2007-07-26 15:39:08 -04:00
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INIT_LIST_OF(struct formhist_data, saved_forms);
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2005-09-15 09:58:31 -04:00
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static struct formhist_data *
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2021-01-02 10:20:27 -05:00
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new_formhist_item(char *url)
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2005-09-15 09:58:31 -04:00
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{
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struct formhist_data *form;
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int url_len = strlen(url);
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form = mem_calloc(1, sizeof(*form) + url_len);
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if (!form) return NULL;
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memcpy(form->url, url, url_len);
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2022-01-16 13:09:27 -05:00
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form->submit = (LIST_OF(struct submitted_value) *)mem_alloc(sizeof(*form->submit));
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2005-09-15 09:58:31 -04:00
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if (!form->submit) { mem_free(form); return NULL; }
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object_nolock(form, "formhist");
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init_list(*form->submit);
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form->box_item = add_listbox_leaf(&formhist_browser, NULL, form);
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if (!form->box_item) {
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mem_free(form->submit);
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mem_free(form);
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return NULL;
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}
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return form;
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}
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static void
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done_formhist_item(struct formhist_data *form)
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{
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done_listbox_item(&formhist_browser, form->box_item);
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done_submitted_value_list(form->submit);
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mem_free(form->submit);
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mem_free(form);
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}
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void
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delete_formhist_item(struct formhist_data *form)
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{
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del_from_list(form);
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done_formhist_item(form);
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}
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static int loaded = 0;
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int
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load_formhist_from_file(void)
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{
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struct formhist_data *form;
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2021-01-02 10:20:27 -05:00
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char tmp[MAX_STR_LEN];
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char *file;
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2005-09-15 09:58:31 -04:00
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FILE *f;
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if (loaded) return 1;
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if (!elinks_home) return 0;
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2007-03-11 06:59:11 -04:00
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file = straconcat(elinks_home, FORMS_HISTORY_FILENAME,
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2021-01-02 10:20:27 -05:00
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(char *) NULL);
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2005-09-15 09:58:31 -04:00
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if (!file) return 0;
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f = fopen(file, "rb");
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mem_free(file);
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if (!f) return 0;
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while (fgets(tmp, MAX_STR_LEN, f)) {
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2021-01-02 10:20:27 -05:00
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char *p;
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2005-09-15 09:58:31 -04:00
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int dontsave = 0;
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if (tmp[0] == '\n' && !tmp[1]) continue;
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2016-04-20 13:43:37 -04:00
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p = strchr((const char *)tmp, '\t');
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2005-09-15 09:58:31 -04:00
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if (p) {
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*p = '\0';
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++p;
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if (!strcmp(tmp, "dontsave"))
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dontsave = 1;
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} else {
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/* Compat. with older file formats. Remove it at some
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* time. --Zas */
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if (!strncmp(tmp, "dontsave,", 9)) {
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dontsave = 1;
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p = tmp + 9;
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} else {
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p = tmp;
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}
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}
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/* URL */
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p[strlen(p) - 1] = '\0';
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form = new_formhist_item(p);
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if (!form) continue;
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if (dontsave) form->dontsave = 1;
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/* Fields type, name, value */
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while (fgets(tmp, MAX_STR_LEN, f)) {
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struct submitted_value *sv;
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2021-01-02 10:20:27 -05:00
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char *type, *name, *value;
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char *enc_value;
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2005-09-15 09:58:31 -04:00
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enum form_type ftype;
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int ret;
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if (tmp[0] == '\n' && !tmp[1]) break;
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/* Type */
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type = tmp;
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2016-04-20 13:43:37 -04:00
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p = strchr((const char *)type, '\t');
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2005-09-15 09:58:31 -04:00
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if (!p) goto fail;
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*p = '\0';
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/* Name */
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name = ++p;
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2016-04-20 13:43:37 -04:00
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p = strchr((const char *)name, '\t');
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2005-09-15 09:58:31 -04:00
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if (!p) {
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/* Compatibility with previous file formats.
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* REMOVE AT SOME TIME --Zas */
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value = name;
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name = type;
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if (*name == '*') {
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name++;
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type = "password";
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} else {
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type = "text";
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}
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goto cont;
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}
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*p = '\0';
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/* Value */
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value = ++p;
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cont:
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2016-04-20 13:43:37 -04:00
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p = strchr((const char *)value, '\n');
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2005-09-15 09:58:31 -04:00
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if (!p) goto fail;
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*p = '\0';
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ret = str2form_type(type);
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if (ret == -1) goto fail;
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ftype = ret;
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if (form->dontsave) continue;
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enc_value = *value ? base64_decode(value)
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: stracpy(value);
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if (!enc_value) goto fail;
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sv = init_submitted_value(name, enc_value,
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ftype, NULL, 0);
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mem_free(enc_value);
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if (!sv) goto fail;
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add_to_list(*form->submit, sv);
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}
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add_to_list(saved_forms, form);
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}
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fclose(f);
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loaded = 1;
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return 1;
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fail:
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done_formhist_item(form);
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return 0;
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}
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int
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save_formhist_to_file(void)
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{
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struct secure_save_info *ssi;
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2021-01-02 10:20:27 -05:00
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char *file;
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2005-09-15 09:58:31 -04:00
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struct formhist_data *form;
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int r;
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if (!elinks_home || get_cmd_opt_bool("anonymous"))
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return 0;
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2007-03-11 06:59:11 -04:00
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file = straconcat(elinks_home, FORMS_HISTORY_FILENAME,
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2021-01-02 10:20:27 -05:00
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(char *) NULL);
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2005-09-15 09:58:31 -04:00
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if (!file) return 0;
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2006-01-10 17:49:35 -05:00
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ssi = secure_open(file);
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2005-09-15 09:58:31 -04:00
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mem_free(file);
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if (!ssi) return 0;
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/* Write the list to password file ($ELINKS_HOME/formhist) */
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foreach (form, saved_forms) {
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struct submitted_value *sv;
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if (form->dontsave) {
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secure_fprintf(ssi, "dontsave\t%s\n\n", form->url);
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continue;
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}
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secure_fprintf(ssi, "%s\n", form->url);
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foreach (sv, *form->submit) {
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2021-01-02 10:20:27 -05:00
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char *encvalue;
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2005-09-15 09:58:31 -04:00
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if (sv->value && *sv->value) {
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/* Obfuscate the value. If we do
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* $ cat ~/.elinks/formhist
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* we don't want someone behind our back to read our
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* password (androids don't count). */
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encvalue = base64_encode(sv->value);
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} else {
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encvalue = stracpy("");
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}
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if (!encvalue) return 0;
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/* Format is : type[TAB]name[TAB]value[CR] */
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secure_fprintf(ssi, "%s\t%s\t%s\n", form_type2str(sv->type),
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sv->name, encvalue);
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mem_free(encvalue);
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}
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secure_fputc(ssi, '\n');
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}
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r = secure_close(ssi);
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if (r == 0) loaded = 1;
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return r;
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}
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/* Check whether the form (chain of @submit submitted_values at @url document)
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* is already present in the form history. */
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static int
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form_exists(struct formhist_data *form1)
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{
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struct formhist_data *form;
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if (!load_formhist_from_file()) return 0;
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foreach (form, saved_forms) {
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int count = 0;
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int exact = 0;
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struct submitted_value *sv;
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if (strcmp(form->url, form1->url)) continue;
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if (form->dontsave) return 1;
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/* Iterate through submitted entries. */
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foreach (sv, *form1->submit) {
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struct submitted_value *sv2;
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2021-01-02 10:20:27 -05:00
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char *value = NULL;
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2005-09-15 09:58:31 -04:00
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count++;
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foreach (sv2, *form->submit) {
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if (sv->type != sv2->type) continue;
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if (!strcmp(sv->name, sv2->name)) {
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exact++;
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value = sv2->value;
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break;
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}
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}
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/* If we found a value for that name, check if value
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* has changed or not. */
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if (value && strcmp(sv->value, value)) return 0;
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}
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/* Check if submitted values have changed or not. */
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if (count && exact && count == exact) return 1;
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}
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return 0;
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}
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static int
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2021-01-02 10:20:27 -05:00
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forget_forms_with_url(char *url)
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2005-09-15 09:58:31 -04:00
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{
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struct formhist_data *form, *next;
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int count = 0;
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foreachsafe (form, next, saved_forms) {
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if (strcmp(form->url, url)) continue;
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delete_formhist_item(form);
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count++;
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}
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return count;
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}
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2007-03-10 16:50:56 -05:00
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|
|
/* Appends form data @form_ (url and submitted_value(s)) to the password file. */
|
|
|
|
static void
|
|
|
|
remember_form(void *form_)
|
2005-09-15 09:58:31 -04:00
|
|
|
{
|
2007-03-10 16:50:56 -05:00
|
|
|
struct formhist_data *form = form_;
|
|
|
|
|
2005-09-15 09:58:31 -04:00
|
|
|
forget_forms_with_url(form->url);
|
|
|
|
add_to_list(saved_forms, form);
|
|
|
|
|
2007-03-10 16:50:56 -05:00
|
|
|
save_formhist_to_file();
|
2005-09-15 09:58:31 -04:00
|
|
|
}
|
|
|
|
|
2007-03-10 16:50:56 -05:00
|
|
|
static void
|
|
|
|
dont_remember_form(void *form_)
|
|
|
|
{
|
|
|
|
struct formhist_data *form = form_;
|
|
|
|
|
|
|
|
done_formhist_item(form);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
never_for_this_site(void *form_)
|
2005-09-15 09:58:31 -04:00
|
|
|
{
|
2007-03-10 16:50:56 -05:00
|
|
|
struct formhist_data *form = form_;
|
|
|
|
|
2005-09-15 09:58:31 -04:00
|
|
|
form->dontsave = 1;
|
2008-08-29 07:27:00 -04:00
|
|
|
remember_form(form);
|
2005-09-15 09:58:31 -04:00
|
|
|
}
|
|
|
|
|
2021-01-02 10:20:27 -05:00
|
|
|
char *
|
|
|
|
get_form_history_value(char *url, char *name)
|
2005-09-15 09:58:31 -04:00
|
|
|
{
|
|
|
|
struct formhist_data *form;
|
|
|
|
|
|
|
|
if (!url || !*url || !name || !*name) return NULL;
|
|
|
|
|
|
|
|
if (!load_formhist_from_file()) return NULL;
|
|
|
|
|
|
|
|
foreach (form, saved_forms) {
|
|
|
|
if (form->dontsave) continue;
|
|
|
|
|
|
|
|
if (!strcmp(form->url, url)) {
|
|
|
|
struct submitted_value *sv;
|
|
|
|
|
|
|
|
foreach (sv, *form->submit)
|
|
|
|
if (!strcmp(sv->name, name))
|
|
|
|
return sv->value;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
2007-07-26 15:39:08 -04:00
|
|
|
memorize_form(struct session *ses, LIST_OF(struct submitted_value) *submit,
|
2005-09-15 09:58:31 -04:00
|
|
|
struct form *forminfo)
|
|
|
|
{
|
Here is a framework that detects cases where a PO file assigns
the same accelerator key to multiple buttons in a dialog box or
to multiple items in a menu. ELinks already has some support for
this but it requires the translator to run ELinks and manually
scan through all menus and dialogs. The attached changes make it
possible to quickly detect and list any conflicts, including ones
that can only occur on operating systems or configurations that
the translator is not currently using.
The changes have no immediate effect on the elinks executable or
the MO files. PO files become larger, however.
The scheme works like this:
- Like before, accelerator keys in translatable strings are
tagged with the tilde (~) character.
- Whenever a C source file defines an accelerator key, it must
assign one or more named "contexts" to it. The translations in
the PO files inherit these contexts. If multiple strings use
the same accelerator (case insensitive) in the same context,
that's a conflict and can be detected automatically.
- The contexts are defined with "gettext_accelerator_context"
comments in source files. These comments delimit regions where
all translatable strings containing tildes are given the same
contexts. There must be one special comment at the top of the
region; it lists the contexts assigned to that region. The
region automatically ends at the end of the function (found
with regexp /^\}/), but it can also be closed explicitly with
another special comment. The comments are formatted like this:
/* [gettext_accelerator_context(foo, bar, baz)]
begins a region that uses the contexts "foo", "bar", and "baz".
The comma is the delimiter; whitespace is optional.
[gettext_accelerator_context()]
ends the region. */
The scripts don't currently check whether this syntax occurs
inside or outside comments.
- The names of contexts consist of C identifiers delimited with
periods. I typically used the name of a function that sets
up a dialog, or the name of an array where the items of a
menu are listed. There is a special feature for static
functions: if the name begins with a period, then the period
will be replaced with the name of the source file and a colon.
- If a menu is programmatically generated from multiple parts,
of which some are never used together, so that it is safe to
use the same accelerators in them, then it is necessary to
define multiple contexts for the same menu. link_menu() in
src/viewer/text/link.c is the most complex example of this.
- During make update-po:
- A Perl script (po/gather-accelerator-contexts.pl) reads
po/elinks.pot, scans the source files listed in it for
"gettext_accelerator_context" comments, and rewrites
po/elinks.pot with "accelerator_context" comments that
indicate the contexts of each msgid: the union of all
contexts of all of its uses in the source files. It also
removes any "gettext_accelerator_context" comments that
xgettext --add-comments has copied to elinks.pot.
- If po/gather-accelerator-contexts.pl does not find any
contexts for some use of an msgid that seems to contain an
accelerator (because it contains a tilde), it warns. If the
tilde refers to e.g. "~/.elinks" and does not actually mark
an accelerator, the warning can be silenced by specifying the
special context "IGNORE", which the script otherwise ignores.
- msgmerge copies the "accelerator_context" comments from
po/elinks.pot to po/*.po. Translators do not edit those
comments.
- During make check-po:
- Another Perl script (po/check-accelerator-contexts.pl) reads
po/*.po and keeps track of which accelerators have been bound
in each context. It warns about any conflicts it finds.
This script does not access the C source files; thus it does
not matter if the line numbers in "#:" lines are out of date.
This implementation is not perfect and I am not proposing to
add it to the main source tree at this time. Specifically:
- It introduces compile-time dependencies on Perl and Locale::PO.
There should be a configure-time or compile-time check so that
the new features are skipped if the prerequisites are missing.
- When the scripts include msgstr strings in warnings, they
should transcode them from the charset of the PO file to the
one specified by the user's locale.
- It is not adequately documented (well, except perhaps here).
- po/check-accelerator-contexts.pl reports the same conflict
multiple times if it occurs in multiple contexts.
- The warning messages should include line numbers, so that users
of Emacs could conveniently edit the conflicting part of the PO
file. This is not feasible with the current version of
Locale::PO.
- Locale::PO does not understand #~ lines and spews warnings
about them. There is an ugly hack to hide these warnings.
- Jonas Fonseca suggested the script could propose accelerators
that are still available. This has not been implemented.
There are three files attached:
- po/gather-accelerator-contexts.pl: Augments elinks.pot with
context information.
- po/check-accelerator-contexts.pl: Checks conflicts.
- accelerator-contexts.diff: Makes po/Makefile run the scripts,
and adds special comments to source files.
2005-12-04 18:38:29 -05:00
|
|
|
/* [gettext_accelerator_context(memorize_form)] */
|
2005-09-15 09:58:31 -04:00
|
|
|
struct formhist_data *form;
|
|
|
|
struct submitted_value *sv;
|
|
|
|
int save = 0;
|
|
|
|
|
|
|
|
/* XXX: For now, we only save these types of form fields. */
|
|
|
|
foreach (sv, *submit) {
|
|
|
|
if (sv->type == FC_PASSWORD && sv->value && *sv->value) {
|
|
|
|
save = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!save) return;
|
|
|
|
|
|
|
|
/* Create a temporary form. */
|
|
|
|
form = new_formhist_item(forminfo->action);
|
|
|
|
if (!form) return;
|
|
|
|
|
|
|
|
foreach (sv, *submit) {
|
|
|
|
if ((sv->type == FC_TEXT) || (sv->type == FC_PASSWORD)) {
|
|
|
|
struct submitted_value *sv2;
|
|
|
|
|
|
|
|
sv2 = init_submitted_value(sv->name, sv->value,
|
|
|
|
sv->type, NULL, 0);
|
|
|
|
if (!sv2) goto fail;
|
|
|
|
|
|
|
|
add_to_list(*form->submit, sv2);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (form_exists(form)) goto fail;
|
|
|
|
|
|
|
|
msg_box(ses->tab->term, NULL, 0,
|
|
|
|
N_("Form history"), ALIGN_CENTER,
|
|
|
|
N_("Should this login be remembered?\n\n"
|
|
|
|
"Please note that the password will be stored "
|
|
|
|
"obscured (but unencrypted) in a file on your disk.\n\n"
|
|
|
|
"If you are using a valuable password, answer NO."),
|
|
|
|
form, 3,
|
2007-03-10 16:50:56 -05:00
|
|
|
MSG_BOX_BUTTON(N_("~Yes"), remember_form, B_ENTER),
|
|
|
|
MSG_BOX_BUTTON(N_("~No"), dont_remember_form, B_ESC),
|
|
|
|
MSG_BOX_BUTTON(N_("Ne~ver for this site"), never_for_this_site, 0));
|
2005-09-15 09:58:31 -04:00
|
|
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
fail:
|
|
|
|
done_formhist_item(form);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
done_form_history(struct module *module)
|
|
|
|
{
|
|
|
|
struct formhist_data *form, *next;
|
|
|
|
|
|
|
|
foreachsafe (form, next, saved_forms) {
|
|
|
|
delete_formhist_item(form);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
struct module forms_history_module = struct_module(
|
|
|
|
/* name: */ N_("Form History"),
|
|
|
|
/* options: */ forms_history_options,
|
|
|
|
/* events: */ NULL,
|
|
|
|
/* submodules: */ NULL,
|
|
|
|
/* data: */ NULL,
|
|
|
|
/* init: */ NULL,
|
|
|
|
/* done: */ done_form_history
|
|
|
|
);
|