form.c 24.5 KB
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/* $Id: form.c,v 1.35 2010/07/18 13:48:48 htrb Exp $ */
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/* 
 * HTML forms
 */
#include "fm.h"
#include "parsetag.h"
#include "parsetagx.h"
#include "myctype.h"
#include "local.h"
#include "regex.h"

extern Str *textarea_str;
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extern int max_textarea;
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#ifdef MENU_SELECT
extern FormSelectOption *select_option;
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extern int max_select;
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#include "menu.h"
#endif				/* MENU_SELECT */

/* *INDENT-OFF* */
struct {
    char *action;
    void (*rout)(struct parsed_tagarg *);
} internal_action[] = {
    {"map", follow_map}, 
    {"option", panel_set_option},
#ifdef USE_COOKIE
    {"cookie", set_cookie_flag},
#endif				/* USE_COOKIE */
    {"download", download_action},
#ifdef USE_M17N
    { "charset", change_charset },
#endif
    {"none", NULL},
    {NULL, NULL},
};
/* *INDENT-ON* */

struct form_list *
newFormList(char *action, char *method, char *charset, char *enctype,
	    char *target, char *name, struct form_list *_next)
{
    struct form_list *l;
    Str a = Strnew_charp(action);
    int m = FORM_METHOD_GET;
    int e = FORM_ENCTYPE_URLENCODED;
#ifdef USE_M17N
    wc_ces c = 0;
#endif

    if (method == NULL || !strcasecmp(method, "get"))
	m = FORM_METHOD_GET;
    else if (!strcasecmp(method, "post"))
	m = FORM_METHOD_POST;
    else if (!strcasecmp(method, "internal"))
	m = FORM_METHOD_INTERNAL;
    /* unknown method is regarded as 'get' */

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    if (m != FORM_METHOD_GET && enctype != NULL &&
	!strcasecmp(enctype, "multipart/form-data")) {
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	e = FORM_ENCTYPE_MULTIPART;
    }

#ifdef USE_M17N
    if (charset != NULL)
	c = wc_guess_charset(charset, 0);
#endif

    l = New(struct form_list);
    l->item = l->lastitem = NULL;
    l->action = a;
    l->method = m;
#ifdef USE_M17N
    l->charset = c;
#endif
    l->enctype = e;
    l->target = target;
    l->name = name;
    l->next = _next;
    l->nitems = 0;
    l->body = NULL;
    l->length = 0;
    return l;
}

/* 
 * add <input> element to form_list
 */
struct form_item_list *
formList_addInput(struct form_list *fl, struct parsed_tag *tag)
{
    struct form_item_list *item;
    char *p;
    int i;

    /* if not in <form>..</form> environment, just ignore <input> tag */
    if (fl == NULL)
	return NULL;

    item = New(struct form_item_list);
    item->type = FORM_UNKNOWN;
    item->size = -1;
    item->rows = 0;
    item->checked = item->init_checked = 0;
    item->accept = 0;
    item->name = NULL;
    item->value = item->init_value = NULL;
    item->readonly = 0;
    if (parsedtag_get_value(tag, ATTR_TYPE, &p)) {
	item->type = formtype(p);
	if (item->size < 0 &&
	    (item->type == FORM_INPUT_TEXT ||
	     item->type == FORM_INPUT_FILE ||
	     item->type == FORM_INPUT_PASSWORD))
	    item->size = FORM_I_TEXT_DEFAULT_SIZE;
    }
    if (parsedtag_get_value(tag, ATTR_NAME, &p))
	item->name = Strnew_charp(p);
    if (parsedtag_get_value(tag, ATTR_VALUE, &p))
	item->value = item->init_value = Strnew_charp(p);
    item->checked = item->init_checked = parsedtag_exists(tag, ATTR_CHECKED);
    item->accept = parsedtag_exists(tag, ATTR_ACCEPT);
    parsedtag_get_value(tag, ATTR_SIZE, &item->size);
    parsedtag_get_value(tag, ATTR_MAXLENGTH, &item->maxlength);
    item->readonly = parsedtag_exists(tag, ATTR_READONLY);
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    if (parsedtag_get_value(tag, ATTR_TEXTAREANUMBER, &i)
	&& i >= 0 && i < max_textarea)
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	item->value = item->init_value = textarea_str[i];
#ifdef MENU_SELECT
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    if (parsedtag_get_value(tag, ATTR_SELECTNUMBER, &i)
	&& i >= 0 && i < max_select)
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	item->select_option = select_option[i].first;
#endif				/* MENU_SELECT */
    if (parsedtag_get_value(tag, ATTR_ROWS, &p))
	item->rows = atoi(p);
    if (item->type == FORM_UNKNOWN) {
	/* type attribute is missing. Ignore the tag. */
	return NULL;
    }
#ifdef MENU_SELECT
    if (item->type == FORM_SELECT) {
	chooseSelectOption(item, item->select_option);
	item->init_selected = item->selected;
	item->init_value = item->value;
	item->init_label = item->label;
    }
#endif				/* MENU_SELECT */
    if (item->type == FORM_INPUT_FILE && item->value && item->value->length) {
	/* security hole ! */
	return NULL;
    }
    item->parent = fl;
    item->next = NULL;
    if (fl->item == NULL) {
	fl->item = fl->lastitem = item;
    }
    else {
	fl->lastitem->next = item;
	fl->lastitem = item;
    }
    if (item->type == FORM_INPUT_HIDDEN)
	return NULL;
    fl->nitems++;
    return item;
}

static char *_formtypetbl[] = {
    "text", "password", "checkbox", "radio", "submit", "reset", "hidden",
    "image", "select", "textarea", "button", "file", NULL
};

static char *_formmethodtbl[] = {
    "GET", "POST", "INTERNAL", "HEAD"
};

char *
form2str(FormItemList *fi)
{
    Str tmp = Strnew();

    if (fi->type != FORM_SELECT && fi->type != FORM_TEXTAREA)
	Strcat_charp(tmp, "input type=");
    Strcat_charp(tmp, _formtypetbl[fi->type]);
    if (fi->name && fi->name->length)
	Strcat_m_charp(tmp, " name=\"", fi->name->ptr, "\"", NULL);
    if ((fi->type == FORM_INPUT_RADIO || fi->type == FORM_INPUT_CHECKBOX ||
	 fi->type == FORM_SELECT) && fi->value)
	Strcat_m_charp(tmp, " value=\"", fi->value->ptr, "\"", NULL);
    Strcat_m_charp(tmp, " (", _formmethodtbl[fi->parent->method], " ",
		   fi->parent->action->ptr, ")", NULL);
    return tmp->ptr;
}

int
formtype(char *typestr)
{
    int i;
    for (i = 0; _formtypetbl[i]; i++) {
	if (!strcasecmp(typestr, _formtypetbl[i]))
	    return i;
    }
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    return FORM_INPUT_TEXT;
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}

void
formRecheckRadio(Anchor *a, Buffer *buf, FormItemList *fi)
{
    int i;
    Anchor *a2;
    FormItemList *f2;

    for (i = 0; i < buf->formitem->nanchor; i++) {
	a2 = &buf->formitem->anchors[i];
	f2 = (FormItemList *)a2->url;
	if (f2->parent == fi->parent && f2 != fi &&
	    f2->type == FORM_INPUT_RADIO && Strcmp(f2->name, fi->name) == 0) {
	    f2->checked = 0;
	    formUpdateBuffer(a2, buf, f2);
	}
    }
    fi->checked = 1;
    formUpdateBuffer(a, buf, fi);
}

void
formResetBuffer(Buffer *buf, AnchorList *formitem)
{
    int i;
    Anchor *a;
    FormItemList *f1, *f2;

    if (buf == NULL || buf->formitem == NULL || formitem == NULL)
	return;
    for (i = 0; i < buf->formitem->nanchor && i < formitem->nanchor; i++) {
	a = &buf->formitem->anchors[i];
	if (a->y != a->start.line)
	    continue;
	f1 = (FormItemList *)a->url;
	f2 = (FormItemList *)formitem->anchors[i].url;
	if (f1->type != f2->type ||
	    strcmp(((f1->name == NULL) ? "" : f1->name->ptr),
		   ((f2->name == NULL) ? "" : f2->name->ptr)))
	    break;		/* What's happening */
	switch (f1->type) {
	case FORM_INPUT_TEXT:
	case FORM_INPUT_PASSWORD:
	case FORM_INPUT_FILE:
	case FORM_TEXTAREA:
	    f1->value = f2->value;
	    f1->init_value = f2->init_value;
	    break;
	case FORM_INPUT_CHECKBOX:
	case FORM_INPUT_RADIO:
	    f1->checked = f2->checked;
	    f1->init_checked = f2->init_checked;
	    break;
	case FORM_SELECT:
#ifdef MENU_SELECT
	    f1->select_option = f2->select_option;
	    f1->value = f2->value;
	    f1->label = f2->label;
	    f1->selected = f2->selected;
	    f1->init_value = f2->init_value;
	    f1->init_label = f2->init_label;
	    f1->init_selected = f2->init_selected;
#endif				/* MENU_SELECT */
	    break;
	default:
	    continue;
	}
	formUpdateBuffer(a, buf, f1);
    }
}

static int
form_update_line(Line *line, char **str, int spos, int epos, int width,
		 int newline, int password)
{
    int c_len = 1, c_width = 1, w, i, len, pos;
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    char *p, *buf;
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    Lineprop c_type, effect, *prop;

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    for (p = *str, w = 0, pos = 0; *p && w < width;) {
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	c_type = get_mctype((unsigned char *)p);
#ifdef USE_M17N
	c_len = get_mclen(p);
	c_width = get_mcwidth(p);
#endif
	if (c_type == PC_CTRL) {
	    if (newline && *p == '\n')
		break;
	    if (*p != '\r') {
		w++;
		pos++;
	    }
	}
	else if (password) {
#ifdef USE_M17N
	    if (w + c_width > width)
		break;
#endif
	    w += c_width;
	    pos += c_width;
#ifdef USE_M17N
	}
	else if (c_type & PC_UNKNOWN) {
	    w++;
	    pos++;
	}
	else {
	    if (w + c_width > width)
		break;
#endif
	    w += c_width;
	    pos += c_len;
	}
	p += c_len;
    }
    pos += width - w;

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    len = line->len + pos + spos - epos;
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    buf = New_N(char, len + 1);
    buf[len] = '\0';
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    prop = New_N(Lineprop, len);
    bcopy((void *)line->lineBuf, (void *)buf, spos * sizeof(char));
    bcopy((void *)line->propBuf, (void *)prop, spos * sizeof(Lineprop));

    effect = CharEffect(line->propBuf[spos]);
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    for (p = *str, w = 0, pos = spos; *p && w < width;) {
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	c_type = get_mctype((unsigned char *)p);
#ifdef USE_M17N
	c_len = get_mclen(p);
	c_width = get_mcwidth(p);
#endif
	if (c_type == PC_CTRL) {
	    if (newline && *p == '\n')
		break;
	    if (*p != '\r') {
		buf[pos] = password ? '*' : ' ';
		prop[pos] = effect | PC_ASCII;
		pos++;
		w++;
	    }
	}
	else if (password) {
#ifdef USE_M17N
	    if (w + c_width > width)
		break;
#endif
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	    for (i = 0; i < c_width; i++) {
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		buf[pos] = '*';
		prop[pos] = effect | PC_ASCII;
		pos++;
		w++;
	    }
#ifdef USE_M17N
	}
	else if (c_type & PC_UNKNOWN) {
	    buf[pos] = ' ';
	    prop[pos] = effect | PC_ASCII;
	    pos++;
	    w++;
	}
	else {
	    if (w + c_width > width)
		break;
#else
	}
	else {
#endif
	    buf[pos] = *p;
	    prop[pos] = effect | c_type;
	    pos++;
#ifdef USE_M17N
	    c_type = (c_type & ~PC_WCHAR1) | PC_WCHAR2;
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	    for (i = 1; i < c_len; i++) {
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		buf[pos] = p[i];
		prop[pos] = effect | c_type;
		pos++;
	    }
#endif
	    w += c_width;
	}
	p += c_len;
    }
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    for (; w < width; w++) {
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	buf[pos] = ' ';
	prop[pos] = effect | PC_ASCII;
	pos++;
    }
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    if (newline) {
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	if (!FoldTextarea) {
	    while (*p && *p != '\r' && *p != '\n')
		p++;
	}
	if (*p == '\r')
	    p++;
	if (*p == '\n')
	    p++;
    }
    *str = p;

    bcopy((void *)&line->lineBuf[epos], (void *)&buf[pos],
	  (line->len - epos) * sizeof(char));
    bcopy((void *)&line->propBuf[epos], (void *)&prop[pos],
	  (line->len - epos) * sizeof(Lineprop));
    line->lineBuf = buf;
    line->propBuf = prop;
    line->len = len;
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    line->size = len;
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    return pos;
}

void
formUpdateBuffer(Anchor *a, Buffer *buf, FormItemList *form)
{
    Buffer save;
    char *p;
    int spos, epos, rows, c_rows, pos, col = 0;
    Line *l;

    copyBuffer(&save, buf);
    gotoLine(buf, a->start.line);
    switch (form->type) {
    case FORM_TEXTAREA:
    case FORM_INPUT_TEXT:
    case FORM_INPUT_FILE:
    case FORM_INPUT_PASSWORD:
    case FORM_INPUT_CHECKBOX:
    case FORM_INPUT_RADIO:
#ifdef MENU_SELECT
    case FORM_SELECT:
#endif				/* MENU_SELECT */
	spos = a->start.pos;
	epos = a->end.pos;
	break;
    default:
	spos = a->start.pos + 1;
	epos = a->end.pos - 1;
    }
    switch (form->type) {
    case FORM_INPUT_CHECKBOX:
    case FORM_INPUT_RADIO:
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	if (buf->currentLine == NULL ||
	    spos >= buf->currentLine->len || spos < 0)
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	    break;
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	if (form->checked)
	    buf->currentLine->lineBuf[spos] = '*';
	else
	    buf->currentLine->lineBuf[spos] = ' ';
	break;
    case FORM_INPUT_TEXT:
    case FORM_INPUT_FILE:
    case FORM_INPUT_PASSWORD:
    case FORM_TEXTAREA:
#ifdef MENU_SELECT
    case FORM_SELECT:
	if (form->type == FORM_SELECT) {
	    p = form->label->ptr;
	    updateSelectOption(form, form->select_option);
	}
	else
#endif				/* MENU_SELECT */
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	{
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	    if (!form->value)
		break;
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	    p = form->value->ptr;
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	}
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	l = buf->currentLine;
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	if (!l)
	    break;
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	if (form->type == FORM_TEXTAREA) {
	    int n = a->y - buf->currentLine->linenumber;
	    if (n > 0)
		for (; l && n; l = l->prev, n--) ;
	    else if (n < 0)
		for (; l && n; l = l->prev, n++) ;
	    if (!l)
		break;
	}
	rows = form->rows ? form->rows : 1;
	col = COLPOS(l, a->start.pos);
	for (c_rows = 0; c_rows < rows; c_rows++, l = l->next) {
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	    if (l == NULL)
		break;
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	    if (rows > 1) {
		pos = columnPos(l, col);
		a = retrieveAnchor(buf->formitem, l->linenumber, pos);
		if (a == NULL)
		    break;
		spos = a->start.pos;
		epos = a->end.pos;
	    }
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	    if (a->start.line != a->end.line || spos > epos || epos >= l->len ||
		spos < 0 || epos < 0 || COLPOS(l, epos) < col)
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		break;
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	    pos = form_update_line(l, &p, spos, epos, COLPOS(l, epos) - col,
				   rows > 1,
				   form->type == FORM_INPUT_PASSWORD);
	    if (pos != epos) {
		shiftAnchorPosition(buf->href, buf->hmarklist,
				    a->start.line, spos, pos - epos);
		shiftAnchorPosition(buf->name, buf->hmarklist,
				    a->start.line, spos, pos - epos);
		shiftAnchorPosition(buf->img, buf->hmarklist,
				    a->start.line, spos, pos - epos);
		shiftAnchorPosition(buf->formitem, buf->hmarklist,
				    a->start.line, spos, pos - epos);
	    }
	}
	break;
    }
    copyBuffer(buf, &save);
    arrangeLine(buf);
}


Str
textfieldrep(Str s, int width)
{
    Lineprop c_type;
    Str n = Strnew_size(width + 2);
    int i, j, k, c_len;

    j = 0;
    for (i = 0; i < s->length; i += c_len) {
	c_type = get_mctype((unsigned char *)&s->ptr[i]);
	c_len = get_mclen(&s->ptr[i]);
	if (s->ptr[i] == '\r')
	    continue;
	k = j + get_mcwidth(&s->ptr[i]);
	if (k > width)
	    break;
	if (c_type == PC_CTRL)
	    Strcat_char(n, ' ');
#ifdef USE_M17N
	else if (c_type & PC_UNKNOWN)
	    Strcat_char(n, ' ');
#endif
	else if (s->ptr[i] == '&')
	    Strcat_charp(n, "&amp;");
	else if (s->ptr[i] == '<')
	    Strcat_charp(n, "&lt;");
	else if (s->ptr[i] == '>')
	    Strcat_charp(n, "&gt;");
	else
	    Strcat_charp_n(n, &s->ptr[i], c_len);
	j = k;
    }
    for (; j < width; j++)
	Strcat_char(n, ' ');
    return n;
}

static void
form_fputs_decode(Str s, FILE * f)
{
    char *p;
    Str z = Strnew();

    for (p = s->ptr; *p;) {
	switch (*p) {
#if !defined( __CYGWIN__ ) && !defined( __EMX__ )
	case '\r':
	    if (*(p + 1) == '\n')
		p++;
	    /* continue to the next label */
#endif				/* !defined( __CYGWIN__ ) && !defined( __EMX__ 
				 * ) */
	default:
	    Strcat_char(z, *p);
	    p++;
	    break;
	}
    }
#ifdef USE_M17N
    z = wc_Str_conv_strict(z, InnerCharset, DisplayCharset);
#endif
    Strfputs(z, f);
}


void
input_textarea(FormItemList *fi)
{
    char *tmpf = tmpfname(TMPF_DFL, NULL)->ptr;
    Str tmp;
    FILE *f;
#ifdef USE_M17N
    wc_ces charset = DisplayCharset;
    wc_uint8 auto_detect;
#endif

    f = fopen(tmpf, "w");
    if (f == NULL) {
	/* FIXME: gettextize? */
	disp_err_message("Can't open temporary file", FALSE);
	return;
    }
    if (fi->value)
	form_fputs_decode(fi->value, f);
    fclose(f);

    fmTerm();
    system(myEditor(Editor, tmpf, 1)->ptr);
    fmInit();

    if (fi->readonly)
	goto input_end;
    f = fopen(tmpf, "r");
    if (f == NULL) {
	/* FIXME: gettextize? */
	disp_err_message("Can't open temporary file", FALSE);
	goto input_end;
    }
    fi->value = Strnew();
#ifdef USE_M17N
    auto_detect = WcOption.auto_detect;
    WcOption.auto_detect = WC_OPT_DETECT_ON;
#endif
    while (tmp = Strfgets(f), tmp->length > 0) {
	if (tmp->length == 1 && tmp->ptr[tmp->length - 1] == '\n') {
	    /* null line with bare LF */
	    tmp = Strnew_charp("\r\n");
	}
	else if (tmp->length > 1 && tmp->ptr[tmp->length - 1] == '\n' &&
		 tmp->ptr[tmp->length - 2] != '\r') {
	    Strshrink(tmp, 1);
	    Strcat_charp(tmp, "\r\n");
	}
	tmp = convertLine(NULL, tmp, RAW_MODE, &charset, DisplayCharset);
	Strcat(fi->value, tmp);
    }
#ifdef USE_M17N
    WcOption.auto_detect = auto_detect;
#endif
    fclose(f);
  input_end:
    unlink(tmpf);
}

void
do_internal(char *action, char *data)
{
    int i;

    for (i = 0; internal_action[i].action; i++) {
	if (strcasecmp(internal_action[i].action, action) == 0) {
	    if (internal_action[i].rout)
		internal_action[i].rout(cgistr2tagarg(data));
	    return;
	}
    }
}

#ifdef MENU_SELECT
void
addSelectOption(FormSelectOption *fso, Str value, Str label, int chk)
{
    FormSelectOptionItem *o;
    o = New(FormSelectOptionItem);
    if (value == NULL)
	value = label;
    o->value = value;
    Strremovefirstspaces(label);
    Strremovetrailingspaces(label);
    o->label = label;
    o->checked = chk;
    o->next = NULL;
    if (fso->first == NULL)
	fso->first = fso->last = o;
    else {
	fso->last->next = o;
	fso->last = o;
    }
}

void
chooseSelectOption(FormItemList *fi, FormSelectOptionItem *item)
{
    FormSelectOptionItem *opt;
    int i;

    fi->selected = 0;
    if (item == NULL) {
	fi->value = Strnew_size(0);
	fi->label = Strnew_size(0);
	return;
    }
    fi->value = item->value;
    fi->label = item->label;
    for (i = 0, opt = item; opt != NULL; i++, opt = opt->next) {
	if (opt->checked) {
	    fi->value = opt->value;
	    fi->label = opt->label;
	    fi->selected = i;
	    break;
	}
    }
    updateSelectOption(fi, item);
}

void
updateSelectOption(FormItemList *fi, FormSelectOptionItem *item)
{
    int i;

    if (fi == NULL || item == NULL)
	return;
    for (i = 0; item != NULL; i++, item = item->next) {
	if (i == fi->selected)
	    item->checked = TRUE;
	else
	    item->checked = FALSE;
    }
}

int
formChooseOptionByMenu(struct form_item_list *fi, int x, int y)
{
    int i, n, selected = -1, init_select = fi->selected;
    FormSelectOptionItem *opt;
    char **label;

    for (n = 0, opt = fi->select_option; opt != NULL; n++, opt = opt->next) ;
    label = New_N(char *, n + 1);
    for (i = 0, opt = fi->select_option; opt != NULL; i++, opt = opt->next)
	label[i] = opt->label->ptr;
    label[n] = NULL;

    optionMenu(x, y, label, &selected, init_select, NULL);

    if (selected < 0)
	return 0;
    for (i = 0, opt = fi->select_option; opt != NULL; i++, opt = opt->next) {
	if (i == selected) {
	    fi->selected = selected;
	    fi->value = opt->value;
	    fi->label = opt->label;
	    break;
	}
    }
    updateSelectOption(fi, fi->select_option);
    return 1;
}
#endif				/* MENU_SELECT */

void
form_write_data(FILE * f, char *boundary, char *name, char *value)
{
    fprintf(f, "--%s\r\n", boundary);
    fprintf(f, "Content-Disposition: form-data; name=\"%s\"\r\n\r\n", name);
    fprintf(f, "%s\r\n", value);
}

void
form_write_from_file(FILE * f, char *boundary, char *name, char *filename,
		     char *file)
{
    FILE *fd;
    struct stat st;
    int c;
    char *type;

    fprintf(f, "--%s\r\n", boundary);
    fprintf(f,
	    "Content-Disposition: form-data; name=\"%s\"; filename=\"%s\"\r\n",
	    name, mybasename(filename));
    type = guessContentType(file);
    fprintf(f, "Content-Type: %s\r\n\r\n",
	    type ? type : "application/octet-stream");

    if (lstat(file, &st) < 0)
	goto write_end;
    if (S_ISDIR(st.st_mode))
	goto write_end;
    fd = fopen(file, "r");
    if (fd != NULL) {
	while ((c = fgetc(fd)) != EOF)
	    fputc(c, f);
	fclose(fd);
    }
  write_end:
    fprintf(f, "\r\n");
}

struct pre_form_item {
    int type;
    char *name;
    char *value;
    int checked;
    struct pre_form_item *next;
};

struct pre_form {
    char *url;
    Regex *re_url;
    char *name;
    char *action;
    struct pre_form_item *item;
    struct pre_form *next;
};

static struct pre_form *PreForm = NULL;

static struct pre_form *
808
add_pre_form(struct pre_form *prev, char *url, Regex *re_url, char *name, char *action)
809 810 811 812 813 814 815 816
{
    ParsedURL pu;
    struct pre_form *new;

    if (prev)
	new = prev->next = New(struct pre_form);
    else
	new = PreForm = New(struct pre_form);
817
    if (url && !re_url) {
818 819 820
	parseURL2(url, &pu, NULL);
	new->url = parsedURL2Str(&pu)->ptr;
    }
821 822 823
    else
	new->url = url;
    new->re_url = re_url;
824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846
    new->name = (name && *name) ? name : NULL;
    new->action = (action && *action) ? action : NULL;
    new->item = NULL;
    new->next = NULL;
    return new;
}

static struct pre_form_item *
add_pre_form_item(struct pre_form *pf, struct pre_form_item *prev, int type,
		  char *name, char *value, char *checked)
{
    struct pre_form_item *new;

    if (!pf)
	return NULL;
    if (prev)
	new = prev->next = New(struct pre_form_item);
    else
	new = pf->item = New(struct pre_form_item);
    new->type = type;
    new->name = name;
    new->value = value;
    if (checked && *checked && (!strcmp(checked, "0") ||
847
				!strcasecmp(checked, "off")
848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887
				|| !strcasecmp(checked, "no")))
	new->checked = 0;
    else
	new->checked = 1;
    new->next = NULL;
    return new;
}

/*
 * url <url>|/<re-url>/
 * form [<name>] <action>
 * text <name> <value>
 * file <name> <value>
 * passwd <name> <value>
 * checkbox <name> <value> [<checked>]
 * radio <name> <value>
 * select <name> <value>
 * submit [<name> [<value>]]
 * image [<name> [<value>]]
 * textarea <name>
 * <value>
 * /textarea
 */

void
loadPreForm(void)
{
    FILE *fp;
    Str line = NULL, textarea = NULL;
    struct pre_form *pf = NULL;
    struct pre_form_item *pi = NULL;
    int type = -1;
    char *name = NULL;

    PreForm = NULL;
    fp = openSecretFile(pre_form_file);
    if (fp == NULL)
	return;
    while (1) {
	char *p, *s, *arg;
888
	Regex *re_arg;
889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905

	line = Strfgets(fp);
	if (line->length == 0)
	    break;
	if (textarea && !(!strncmp(line->ptr, "/textarea", 9) &&
			  IS_SPACE(line->ptr[9]))) {
	    Strcat(textarea, line);
	    continue;
	}
	Strchop(line);
	Strremovefirstspaces(line);
	p = line->ptr;
	if (*p == '#' || *p == '\0')
	    continue;		/* comment or empty line */
	s = getWord(&p);

	if (!strcmp(s, "url")) {
906
	    arg = getRegexWord((const char **)&p, &re_arg);
907 908 909
	    if (!arg || !*arg)
		continue;
	    p = getQWord(&p);
910
	    pf = add_pre_form(pf, arg, re_arg, NULL, p);
911 912 913 914 915
	    pi = pf->item;
	    continue;
	}
	if (!pf)
	    continue;
916 917

	arg = getWord(&p);
918 919 920 921 922 923 924 925 926 927 928
	if (!strcmp(s, "form")) {
	    if (!arg || !*arg)
		continue;
	    s = getQWord(&p);
	    p = getQWord(&p);
	    if (!p || !*p) {
		p = s;
		s = NULL;
	    }
	    if (pf->item) {
		struct pre_form *prev = pf;
929
		pf = add_pre_form(prev, "", NULL, s, p);
930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069
		/* copy previous URL */
		pf->url = prev->url;
		pf->re_url = prev->re_url;
	    }
	    else {
		pf->name = s;
		pf->action = (p && *p) ? p : NULL;
	    }
	    pi = pf->item;
	    continue;
	}
	if (!strcmp(s, "text"))
	    type = FORM_INPUT_TEXT;
	else if (!strcmp(s, "file"))
	    type = FORM_INPUT_FILE;
	else if (!strcmp(s, "passwd") || !strcmp(s, "password"))
	    type = FORM_INPUT_PASSWORD;
	else if (!strcmp(s, "checkbox"))
	    type = FORM_INPUT_CHECKBOX;
	else if (!strcmp(s, "radio"))
	    type = FORM_INPUT_RADIO;
	else if (!strcmp(s, "submit"))
	    type = FORM_INPUT_SUBMIT;
	else if (!strcmp(s, "image"))
	    type = FORM_INPUT_IMAGE;
	else if (!strcmp(s, "select"))
	    type = FORM_SELECT;
	else if (!strcmp(s, "textarea")) {
	    type = FORM_TEXTAREA;
	    name = Strnew_charp(arg)->ptr;
	    textarea = Strnew();
	    continue;
	}
	else if (textarea && name && !strcmp(s, "/textarea")) {
	    pi = add_pre_form_item(pf, pi, type, name, textarea->ptr, NULL);
	    textarea = NULL;
	    name = NULL;
	    continue;
	}
	else
	    continue;
	s = getQWord(&p);
	pi = add_pre_form_item(pf, pi, type, arg, s, getQWord(&p));
    }
    fclose(fp);
}

void
preFormUpdateBuffer(Buffer *buf)
{
    struct pre_form *pf;
    struct pre_form_item *pi;
    int i;
    Anchor *a;
    FormList *fl;
    FormItemList *fi;
#ifdef MENU_SELECT
    FormSelectOptionItem *opt;
    int j;
#endif

    if (!buf || !buf->formitem || !PreForm)
	return;

    for (pf = PreForm; pf; pf = pf->next) {
	if (pf->re_url) {
	    Str url = parsedURL2Str(&buf->currentURL);
	    if (!RegexMatch(pf->re_url, url->ptr, url->length, 1))
		continue;
	}
	else if (pf->url) {
	    if (Strcmp_charp(parsedURL2Str(&buf->currentURL), pf->url))
		continue;
	}
	else
	    continue;
	for (i = 0; i < buf->formitem->nanchor; i++) {
	    a = &buf->formitem->anchors[i];
	    fi = (FormItemList *)a->url;
	    fl = fi->parent;
	    if (pf->name && (!fl->name || strcmp(fl->name, pf->name)))
		continue;
	    if (pf->action
		&& (!fl->action || Strcmp_charp(fl->action, pf->action)))
		continue;
	    for (pi = pf->item; pi; pi = pi->next) {
		if (pi->type != fi->type)
		    continue;
		if (pi->type == FORM_INPUT_SUBMIT ||
		    pi->type == FORM_INPUT_IMAGE) {
		    if ((!pi->name || !*pi->name ||
			 (fi->name && !Strcmp_charp(fi->name, pi->name))) &&
			(!pi->value || !*pi->value ||
			 (fi->value && !Strcmp_charp(fi->value, pi->value))))
			buf->submit = a;
		    continue;
		}
		if (!pi->name || !fi->name || Strcmp_charp(fi->name, pi->name))
		    continue;
		switch (pi->type) {
		case FORM_INPUT_TEXT:
		case FORM_INPUT_FILE:
		case FORM_INPUT_PASSWORD:
		case FORM_TEXTAREA:
		    fi->value = Strnew_charp(pi->value);
		    formUpdateBuffer(a, buf, fi);
		    break;
		case FORM_INPUT_CHECKBOX:
		    if (pi->value && fi->value &&
			!Strcmp_charp(fi->value, pi->value)) {
			fi->checked = pi->checked;
			formUpdateBuffer(a, buf, fi);
		    }
		    break;
		case FORM_INPUT_RADIO:
		    if (pi->value && fi->value &&
			!Strcmp_charp(fi->value, pi->value))
			formRecheckRadio(a, buf, fi);
		    break;
#ifdef MENU_SELECT
		case FORM_SELECT:
		    for (j = 0, opt = fi->select_option; opt != NULL;
			 j++, opt = opt->next) {
			if (pi->value && opt->value &&
			    !Strcmp_charp(opt->value, pi->value)) {
			    fi->selected = j;
			    fi->value = opt->value;
			    fi->label = opt->label;
			    updateSelectOption(fi, fi->select_option);
			    formUpdateBuffer(a, buf, fi);
			    break;
			}
		    }
		    break;
#endif
		}
	    }
	}
    }
}