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jsint.c
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/* jsint.c
* (c) 2002 Mikulas Patocka (Vrxni Ideolog), Petr 'Brain' Kulhavy
* This file is a part of the Links program, relased under GPL.
*/
/*
* Ve vsech upcallech plati, ze pokud dostanu ID nejakeho objektu, tak
* javascript ma k tomu objektu pristupova prava. Jinymi slovy pristupova prava
* se testuji v upcallech jen, aby se neco neproneslo vratnici ven. Dovnitr se
* muze donaset vsechno, co si javascript donese, na to ma prava.
*
* Navic vsechny upcally dostanou pointer na f_data_c, kde bezi javascript,
* takze se bude moci testovat, zda javascript nesaha na f_data_c, ke kteremu
* nema pristupova prava.
*
* Brain
*/
/* Uctovani pameti:
* js_mem_alloc/js_mem_free se bude pouzivat na struktury fax_me_tender
* dale se bude pouzivat take ve funkcich pro praci s cookies, protoze string
* cookies v javascript_context se tez alokuje pomoci js_mem_alloc/js_mem_free.
*/
/*
Retezce:
vsechny retezce v ramci javascriptu jsou predavany v kodovani f_data->cp
(tedy tak, jak prisly v dokumentu ze site)
*/
#include "links.h"
#ifdef JS
tcount jsint_execute_seq = 0;
#include "struct.h"
#include "ipret.h"
#include "builtin_keys.h"
/*
vypisuje to: jaky kod byl zarazen do fronty. jaky kod byl predan interpretu do js_execute_code. jaky kod byl vykonan a ukoncen intepretem jsint_done_execution
#define TRACE_EXECUTE
*/
struct js_request {
list_entry_1st
int onclick_submit; /* >=0 (znamena cislo formulare) pokud tohle je request onclick handleru u submit tlacitka nebo onsubmit handleru */
int onsubmit; /* dtto pro submit handler */
struct links_event ev; /* event, ktery se ma poslat pri uspechu */
int write_pos; /* document.write position from END of document. -1 if document.write cannot be used */
int wrote; /* this request called document.write */
int len;
tcount seq;
list_entry_last
unsigned char code[1];
};
/* set_cookies bude parsovat takhle:
* +....=............;...............................+ <- tohle je strinzik
* ^ ^
* najdu 1. rovnase a za nim 1. strednik, najdu nasledujici rovnase a
* nasledujici strednik, pokud to bude platne (&'='<&';') a 2. jmeno bude
* "expires", tak to je furt jedna cookie -> poslu Mikulasovi.
*
* kdyz ne, tak je to jina susenka a poslu to 1. Mikulasovi
*
* pokud najdu ';' a za nim whitespace, za kterym neni rovnase, tak od toho
* stredniku je to garbaz, kterou vratim do strinziku (fd->js->ctx->cookies)
*/
/* sets all cookies in fd>js->ctx->cookies */
/* final_flush means, that set_cookies was called from jsint_done_execution */
/* JESTLI V TYHLE FUNKCI BUDE NEJAKA BUGA, tak za to muze PerM, Clock a pan GNU,
* ktery tady kolem rusili, ze jsem se nemohl soustredit. Takze se s
* pripadnejma reklamacema obratte na ne!
*
* Brain
*/
/* prototypes */
static void jsint_send_event(struct f_data_c *fd, struct links_event *ev);
static int jsint_create(struct f_data_c *);
static void jsint_done_execution(void *);
static int jsint_can_access(struct f_data_c *, struct f_data_c *);
static struct f_data_c *jsint_find_recursive(struct f_data_c *, long); /* line 89 */
static void *jsint_find_object(struct f_data_c *, long);
static long *add_id(long *, int *, long );
static long *add_fd_id(long *, int *, long, long, unsigned char *);
static void add_all_recursive_in_fd(long **, int *, struct f_data_c *, struct f_data_c *);
void jsint_set_cookies(struct f_data_c *fd, int final_flush)
{
unsigned char *str;
unsigned char *next;
unsigned char *eq1, *semic1, *eq2, *semic2;
if(!(fd->js)||!(fd->js->ctx))internal_error("jsint_set_cookies called with NULL context.\n");
if (!(fd->js->ctx->cookies)||!(fd->rq))return; /* cookies string is empty, nothing to set */
str=fd->js->ctx->cookies;
a_znova:
eq1=strchr(str,'=');
semic1=strchr(str,';');
if (!*str||(!final_flush&&!semic1)) /* na konci neni strednik a skript jeste bezi, takze to musime vratit do stringu a vypadnout */
{
unsigned char *bla=NULL;
if (*str)bla=stracpy1(str);
js_mem_free(fd->js->ctx->cookies);
fd->js->ctx->cookies=bla;
return;
}
/* ted se v str bud vyskytuje strednik, nebo skript uz skoncil */
if (semic1&&eq1>semic1) /* '=' je za ';' takze to pred strednikem a strednik skipnem */
{
str=semic1+1;
goto a_znova;
}
next=semic1?semic1+1:str+strlen(cast_const_char str);
if (!eq1) /* neni tam '=', takze to preskocime */
{
str=next;
goto a_znova;
}
/* ted by to mela bejt regulerni susenka */
next_par:
eq2=NULL,semic2=NULL;
if (semic1!=NULL)
{
eq2=strchr(semic1+1,'=');
semic2=strchr(semic1+1,';');
}
if (eq2&&semic1&&(final_flush||semic2))
{
unsigned char *p=strstr(semic1+1,"expires");
if (!p)p=strstr(semic1+1,"Expires");
if (!p)p=strstr(semic1+1,"EXPIRES");
if (!p)p=strstr(semic1+1,"domain");
if (!p)p=strstr(semic1+1,"Domain");
if (!p)p=strstr(semic1+1,"DOMAIN");
if (!p)p=strstr(semic1+1,"path");
if (!p)p=strstr(semic1+1,"Path");
if (!p)p=strstr(semic1+1,"PATH");
if (!p)p=strstr(semic1+1,"comment");
if (!p)p=strstr(semic1+1,"Comment");
if (!p)p=strstr(semic1+1,"COMMENT");
if (!p)p=strstr(semic1+1,"max-age");
if (!p)p=strstr(semic1+1,"Max-age");
if (!p)p=strstr(semic1+1,"Max-Age");
if (!p)p=strstr(semic1+1,"MAX-AGE");
if (!p)p=strstr(semic1+1,"version");
if (!p)p=strstr(semic1+1,"Version");
if (!p)p=strstr(semic1+1,"VERSION");
if (p&&p>semic1&&p<eq2) /* za 1. prirazenim nasleduje "expires=", takze to je porad jedna susenka */
{
next=semic2?semic2+1:str+strlen(cast_const_char str);
semic1=semic2;
goto next_par;
}
}
if (*next)next[-1]=0;
for (;*str&&WHITECHAR(*str);str++); /* skip whitechars */
/*debug("set_cookie: \"%s\"", str);*/
set_cookie(fd->ses->term, fd->rq->url, str);
str=next;
goto a_znova;
}
int jsint_object_type(long to_je_on_Padre)
{
return to_je_on_Padre&JS_OBJ_MASK;
}
static int jsint_create(struct f_data_c *fd)
{
struct js_state *js;
if (fd->js) internal_error("javascript state present");
js = mem_calloc(sizeof(struct js_state));
if (!(js->ctx = js_create_context(fd, ((fd->id)<<JS_OBJ_MASK_SIZE)|JS_OBJ_T_DOCUMENT))) {
mem_free(js);
return 1;
}
init_list(js->queue);
fd->js = js;
return 0;
}
void jsint_destroy(struct f_data_c *fd)
{
struct js_state *js = fd->js;
fd->script_t = 0;
if (!js) return;
fd->js = NULL;
pr(js_destroy_context(js->ctx)) return;
if (js->src) mem_free(js->src);
if (js->active) mem_free(js->active);
js_zaflaknuto_pameti -= js->newdata;
free_list(struct js_request, js->queue);
mem_free(js);
}
/* for <a href="javascript:..."> */
void javascript_func(struct session *ses, unsigned char *hlavne_ze_je_vecirek)
{
unsigned char *code=get_url_data(hlavne_ze_je_vecirek);
jsint_execute_code(current_frame(ses),code,strlen(cast_const_char code),-1,-1,-1, NULL);
}
static void jsint_send_event(struct f_data_c *fd, struct links_event *ev)
{
if (!ev || !ev->b) return;
send_event(fd->ses, ev);
}
/* executes or queues javascript code in frame:
write_pos is number of bytes from the position where document.write should write to the end of document
write_pos == -1 if it is not from <SCRIPT> statement and cannot use document.write
*/
/* data je cislo formulare pro onclick submit handler, jinak se nepouziva */
/* ev je udalost, ktera se ma znovu poslat, pokud bylo vraceno true */
void jsint_execute_code(struct f_data_c *fd, unsigned char *code, int len, int write_pos, int onclick_submit, int onsubmit, struct links_event *ev)
{
struct js_request *r, *q;
struct list_head *lq;
for (;code&&len&&*code&&((*code)==' '||(*code)==9||(*code)==13||(*code)==10);code++,len--);
/*
FUJ !!!!
if (!casecmp(code, cast_uchar "javascript:",strlen(cast_const_char "javascript:")))code+=strlen(cast_const_char "javascript:");
*/
if (len >= 11 && !casecmp(code, "javascript:", 11)) code += 11, len -= 11;
if (!js_enable) {
jsint_send_event(fd, ev);
return;
}
#ifdef TRACE_EXECUTE
fprintf(stderr, "Submitted: ^^%.*s^^\n", len, code);
#endif
if (!fd->js && jsint_create(fd)) {
jsint_send_event(fd, ev);
return;
}
if ((unsigned)len > MAXINT - sizeof(struct js_request)) overalloc();
r = mem_calloc(sizeof(struct js_request) + len);
r->seq = jsint_execute_seq++;
r->write_pos = write_pos;
r->len = len;
r->onclick_submit = onclick_submit;
r->onsubmit = onsubmit;
memcpy(r->code, code, len);
if (ev) memcpy(&r->ev, ev, sizeof(struct links_event));
if (write_pos == -1) {
add_to_list_end(fd->js->queue, r);
} else {
/* add it beyond all <SCRIPT> requests but before non-<SCRIPT> ones */
foreach(struct js_request, q, lq, fd->js->queue) if (q->write_pos == -1) break;
add_before_list_entry(lq, &r->list_entry);
}
jsint_run_queue(fd);
}
static void jsint_done_execution(void *fd_)
{
struct f_data_c *fd = (struct f_data_c *)fd_;
struct js_request *r, *to_exec;
struct list_head *lr;
struct js_state *js = fd->js;
struct links_event ev = { 0, 0, 0, 0 };
if (!js) {
internal_error("no js in frame");
return;
}
if (!js->active) {
internal_error("jsint_done_execution: completion function called on inactive js");
return;
}
#ifdef TRACE_EXECUTE
fprintf(stderr, "Done: ^^%.*s^^\n", js->active->len, js->active->code);
#endif
/* accept all cookies set by the script */
jsint_set_cookies(fd,1);
/* js->active obsahuje request prave dobehnuteho skriptu */
/* dobehl onclick_handler a nezaplatil (vratil false), budou se dit veci */
if (js->active->ev.b && js->ctx->zaplatim)
memcpy(&ev, &js->active->ev, sizeof(struct links_event));
if (js->active->onclick_submit >=0 && !js->ctx->zaplatim)
{
/* pokud je handler od stejneho formulare, jako je defered, tak odlozeny skok znicime a zlikvidujem prislusny onsubmit handler z fronty */
if (js->active->onclick_submit == fd->ses->defered_data)
{
foreach(struct js_request, r, lr,js->queue)
/* to je onsubmit od naseho formulare, tak ho smazem */
if (r->onsubmit == js->active->onclick_submit)
{
del_from_list(r);
mem_free(r);
break; /* zadny dalsi onsubmit tohoto formulare uz nebude */
}
ses_destroy_defered_jump(fd->ses);
}
}
if (js->active->write_pos == -1) mem_free(js->active), js->active = NULL;
else {
r = js->active; js->active = NULL;
if (r->wrote) js->wrote = 1;
jsint_scan_script_tags(fd);
if (!f_is_finished(fd->f_data)) {
fd->done = 0;
fd->parsed_done = 0;
}
if (js->wrote && fd->script_t == -1) {
fd->done = 0;
fd->parsed_done = 0;
fd_loaded(NULL, fd);
js->wrote = 0;
}
mem_free(r);
}
to_exec = js->active;
if (!to_exec && !list_empty(fd->js->queue)) to_exec = list_struct(fd->js->queue.next, struct js_request);
if (fd->ses->defered_url && (!to_exec || (to_exec->seq > fd->ses->defered_seq && to_exec->write_pos == -1)))
{
unsigned char *url, *target;
url=stracpy(fd->ses->defered_url);
target=stracpy(fd->ses->defered_url);
goto_url_f(fd->ses,NULL,url,target,fd->ses->defered_target_base,fd->ses->defered_data,0,0,0);
mem_free(url);
mem_free(target);
}
else
jsint_run_queue(fd);
jsint_send_event(fd, &ev);
}
void jsint_run_queue(struct f_data_c *fd)
{
struct js_request *r;
struct js_state *js = fd->js;
if ((!fd->done && fd->f_data) || !js || js->active || list_empty(js->queue)) return;
r = list_struct(js->queue.next, struct js_request);
del_from_list(r);
js->active = r;
#ifdef TRACE_EXECUTE
fprintf(stderr, "Executing: ^^%.*s^^\n", r->len, r->code);
#endif
pr(js_execute_code(js->ctx, r->code, r->len, jsint_done_execution)) {};
}
/* returns: 1 - source is modified by document.write
0 - original source
*/
int jsint_get_source(struct f_data_c *fd, unsigned char **start, size_t *len)
{
struct js_state *js = fd->js;
if (!js || !js->src) return 0;
if (start) *start = js->src;
if (len) *len = (size_t)js->srclen;
return 1;
}
/*
* tests if script running in frame "running" can access document in frame "accessed"
* 0=no permission, 1=permission OK
*/
static int jsint_can_access(struct f_data_c *running, struct f_data_c *accessed)
{
int a;
unsigned char *h1, *h2;
if (!running || !accessed || !running->rq || !accessed->rq) return 0;
h1 = get_host_name(running->rq->url);
h2 = get_host_name(accessed->rq->url);
a = !casestrcmp(h1, h2);
mem_free(h1);
mem_free(h2);
return a;
}
/* doc_id is real document id, whithout any type */
/* fd must be a valid pointer */
static struct f_data_c *jsint_find_recursive(struct f_data_c *fd, long doc_id)
{
struct f_data_c *sub, *fdd;
struct list_head *lsub;
if (fd->id == doc_id) return fd;
foreach(struct f_data_c, sub, lsub, fd->subframes) {
if ((fdd = jsint_find_recursive(sub, doc_id))) return fdd;
}
return NULL;
}
/*
* This function finds document that has given ID
*/
struct f_data_c *jsint_find_document(long doc_id)
{
struct f_data_c *fd;
struct session *ses;
struct list_head *lses;
int type=jsint_object_type(doc_id);
if (type!=JS_OBJ_T_DOCUMENT&&type!=JS_OBJ_T_FRAME)
{unsigned char txt[256]; snprintf(txt,256,"jsint_find_document called with type=%d\n",type);internal_error(txt);}
doc_id>>=JS_OBJ_MASK_SIZE;
foreach(struct session, ses, lses, sessions) if ((fd = jsint_find_recursive(ses->screen, doc_id))) return fd;
return NULL;
}
/* Document has just loaded. Scan for <SCRIPT> tags and execute each of them */
void jsint_scan_script_tags(struct f_data_c *fd)
{
unsigned char *name, *attr;
int namelen;
unsigned char *val, *e, *ee;
unsigned char *s, *ss, *eof;
size_t len;
unsigned char *start, *end;
unsigned char *onload_code = NULL;
int uv;
int bs;
if (!js_enable) return;
if (!fd->rq || !fd->rq->ce || !fd->f_data) return;
if (!jsint_get_source(fd, &ss, &len)) {
if (get_file(fd->rq, &ss, &len)) return;
}
if (len > MAXINT) len = MAXINT;
eof = ss + len;
d_opt = &fd->f_data->opt;
s = ss;
se:
while (s < eof && *s != '<') sp:s++;
if (s >= eof || fd->script_t < 0)
{
if (onload_code && fd->script_t != -1)
{
jsint_execute_code(fd,onload_code,strlen(cast_const_char onload_code),-1,-1,-1, NULL);
}
fd->script_t = -1;
goto ret;
}
if (eof - s >= 2 && (s[1] == '!' || s[1] == '?')) {
s = skip_comment(s, eof);
goto se;
}
if (parse_element(s, eof, &name, &namelen, &attr, &s)) goto sp;
if (!onload_code&&namelen==4&&!casecmp(name,"BODY",4))
{
onload_code=get_attr_val(attr,"onload"); /* if the element doesn't have onload attribute get_attr_val returns NULL */
goto se;
}
if (!onload_code&&namelen==3&&!casecmp(name,"IMG",3))
{
onload_code=get_attr_val(attr,"onload"); /* if the element doesn't have onload attribute get_attr_val returns NULL */
goto se;
}
if (namelen != 6 || casecmp(name, "SCRIPT", 6) || s - ss < fd->script_t) goto se;
start = end = NULL;
if ((val = get_attr_val(attr, "src"))) {
unsigned char *url;
if (fd->f_data->script_href_base && ((url = join_urls(fd->f_data->script_href_base, val)))) {
size_t len;
int code, version;
struct additional_file *af = request_additional_file(fd->f_data, url);
mem_free(url);
mem_free(val);
if (!af || !af->rq) goto se;
if (af->rq->state >= 0) goto ret;
if (!af->rq->ce) goto se;
if (!get_http_code(af->rq->ce->head, &code, &version)) {
if (code < 200 || code >= 300) goto se;
}
if (get_file(af->rq, &start, &len)) goto se;
if (!len) goto se;
if (len > MAXINT) len = MAXINT;
end = start + len;
} else {
mem_free(val);
goto se;
}
}
e = s;
uv = 0;
bs = 0;
while (e < eof && *e != '<') {
es:
if (!uv && (*e == '"' || *e == '\'')) uv = *e, bs = 0;
else if (*e == '\\' && uv) bs = 1;
else if (*e == uv && !bs) uv = 0;
else bs = 0;
e++;
}
if (eof - e >= 8) {
if (/*uv ||*/ casecmp(e, "</SCRIPT", 8)) goto es;
} else e = eof;
ee = e;
while (ee < eof && *ee != '>') ee++;
if (ee < eof) ee++;
fd->script_t = ee - ss;
if (!start || !end) jsint_execute_code(fd, s, e - s, eof - ee,-1,-1, NULL);
else jsint_execute_code(fd, start, end - start, eof - ee,-1,-1, NULL);
ret:
if (onload_code)mem_free(onload_code);
d_opt = &dd_opt;
}
struct hopla_mladej
{
struct form_control *fc;
struct form_state *fs;
};
/* Returns pointer to the object with given ID in the document, or NULL when
* there's no such object. Document must be a valid pointer.
*
* Pointer type depends on type of object, caller must know the type and
* interpret the pointer in the right way.
*/
static void *jsint_find_object(struct f_data_c *document, long obj_id)
{
int type=obj_id&JS_OBJ_MASK;
int orig_obj_id=obj_id;
obj_id>>=JS_OBJ_MASK_SIZE;
switch (type)
{
/* form element
* obj_id can be from 0 up to number of form fields
* (document->vs->form_info_len may be actually lower if the fields were never
* touched)
* returns allocated struct hopla_mladej, you must free it after use
*/
case JS_OBJ_T_TEXT:
case JS_OBJ_T_PASSWORD:
case JS_OBJ_T_TEXTAREA:
case JS_OBJ_T_CHECKBOX:
case JS_OBJ_T_RADIO:
case JS_OBJ_T_SELECT:
case JS_OBJ_T_SUBMIT:
case JS_OBJ_T_RESET:
case JS_OBJ_T_HIDDEN:
case JS_OBJ_T_BUTTON:
{
struct hopla_mladej *hopla;
struct form_control *fc;
struct list_head *lfc;
int a=0;
if (obj_id<0/*||obj_id>=n*/)return NULL;
hopla=mem_alloc(sizeof(struct hopla_mladej));
if (!(document->f_data)){mem_free(hopla);return NULL;};
foreachback(struct form_control, fc, lfc, document->f_data->forms)
if (fc->g_ctrl_num==obj_id){a=1;break;}
if (!a){mem_free(hopla);return NULL;}
hopla->fs=find_form_state(document, fc);
hopla->fc=fc;
return hopla;
}
/* link
* obj_id can be from 0 to (nlinks-1)
*/
case JS_OBJ_T_LINK:
{
struct link*l;
int n;
if (!(document->f_data))return NULL;
l=document->f_data->links;
n=document->f_data->nlinks;
if (obj_id<0||obj_id>=n)return NULL;
return l+obj_id;
}
/* form
* obj_id is form_num in struct form_control (f_data->forms)
*/
case JS_OBJ_T_FORM:
{
struct form_control *f;
struct list_head *lf;
if (!(document->f_data))return NULL;
foreachback(struct form_control, f, lf, document->f_data->forms) if ((f->form_num)==obj_id)return f;
return NULL;
}
/* anchors
* obj_id is position in list of all tags
*/
case JS_OBJ_T_ANCHOR:
{
struct tag *t;
struct list_head *lt;
int a=0;
if (!(document->f_data))return NULL;
foreach(struct tag, t, lt, document->f_data->tags)
{
if (obj_id==a)return t;
a++;
}
return NULL;
}
break;
/* this is document
* call jsint_find_document
* returned value is struct f_data_c
*/
case JS_OBJ_T_FRAME:
case JS_OBJ_T_DOCUMENT:
return jsint_find_document(orig_obj_id);
/* image
* returned value is struct g_object_image *
*/
case JS_OBJ_T_IMAGE:
#ifdef G
if (F) {
struct g_object_image *gi;
struct list_head *lgi;
if (!document->f_data) return NULL;
foreach(struct g_object_image, gi, lgi, document->f_data->images) {
if (gi->id == obj_id) return gi;
}
return NULL;
}else
#endif
return NULL;
default:
internal_error("jsint_find_object: unknown type %d.",type);
return NULL; /* never called, but GCC likes it ;-) */
}
}
static long *add_id(long *field,int *len,long id)
{
long *p;
int a;
for (a=0;a<(*len);a++) /* this object is already on the list */
if (field[a]==id)return field;
(*len)++;
if ((unsigned)*len > MAXINT / sizeof(long)) overalloc();
p=mem_realloc(field,(*len)*sizeof(long));
p[(*len)-1]=id;
return p;
}
long *add_fd_id(long *field,int *len,long fd,long id, unsigned char *name)
{
long *p;
int a;
for (a=0;a<(*len);a+=3) /* this object is already on the list */
if (field[a]==fd&&field[a+1]==id)return field;
(*len)+=3;
if ((unsigned)*len > MAXINT / sizeof(long)) overalloc();
p=mem_realloc(field,(*len)*sizeof(long));
p[(*len)-3]=fd;
p[(*len)-2]=id;
p[(*len)-1]=(name&&(*name))?(long)stracpy(name):(long)NULL;
return p;
}
static long js_upcall_get_frame_id(void *data);
/* finds all objects with name takhle_tomu_u_nas_nadavame
* in fd and all it's subframes with rq==NULL
* js_ctx is f_data_c of the accessing script
*/
static long *find_in_subframes(struct f_data_c *js_ctx, struct f_data_c *fd, long *pole_vole, int *n_items, unsigned char *takhle_tomu_u_nas_nadavame)
{
struct f_data_c *ff;
struct list_head *lff;
struct form_control *f;
struct list_head *lf;
/* search frame */
foreach(struct f_data_c, ff, lff, fd->subframes)
if (ff->loc&&ff->loc->name&&!strcmp(cast_const_char ff->loc->name,cast_const_char takhle_tomu_u_nas_nadavame)&&jsint_can_access(js_ctx,ff)) /* to je on! */
if (!(pole_vole=add_id(pole_vole,n_items,js_upcall_get_frame_id(ff))))return NULL;
if (!(fd->f_data))goto a_je_po_ptakach;
#ifdef G
if (F) {
struct g_object_image *gi;
struct list_head *lgi;
/* search images */
foreach(struct g_object_image, gi, lgi, fd->f_data->images) {
if (gi->name&&!strcmp(cast_const_char gi->name, cast_const_char takhle_tomu_u_nas_nadavame))
if (!(pole_vole=add_id(pole_vole,n_items,JS_OBJ_T_IMAGE+((gi->id)<<JS_OBJ_MASK_SIZE))))return NULL;
}
}
#endif
/* search forms */
foreachback(struct form_control, f, lf, fd->f_data->forms)
if (f->form_name&&!strcmp(cast_const_char f->form_name,cast_const_char takhle_tomu_u_nas_nadavame)) /* tak tohle JE Jim Beam */
if (!(pole_vole=add_id(pole_vole,n_items,((f->form_num)<<JS_OBJ_MASK_SIZE)+JS_OBJ_T_FORM)))return NULL;
/* search form elements */
foreachback(struct form_control, f, lf, fd->f_data->forms)
if (f->name&&!strcmp(cast_const_char f->name,cast_const_char takhle_tomu_u_nas_nadavame)) /* tak tohle JE Jim Beam */
{
long tak_mu_to_ukaz=0;
tak_mu_to_ukaz=(f->g_ctrl_num)<<JS_OBJ_MASK_SIZE;
switch (f->type)
{
case FC_TEXT: tak_mu_to_ukaz|=JS_OBJ_T_TEXT; break;
case FC_PASSWORD: tak_mu_to_ukaz|=JS_OBJ_T_PASSWORD; break;
case FC_TEXTAREA: tak_mu_to_ukaz|=JS_OBJ_T_TEXTAREA; break;
case FC_CHECKBOX: tak_mu_to_ukaz|=JS_OBJ_T_CHECKBOX; break;
case FC_RADIO: tak_mu_to_ukaz|=JS_OBJ_T_RADIO; break;
case FC_IMAGE:
case FC_SELECT: tak_mu_to_ukaz|=JS_OBJ_T_SELECT; break;
case FC_SUBMIT: tak_mu_to_ukaz|=JS_OBJ_T_SUBMIT ; break;
case FC_RESET: tak_mu_to_ukaz|=JS_OBJ_T_RESET ; break;
case FC_HIDDEN: tak_mu_to_ukaz|=JS_OBJ_T_HIDDEN ; break;
case FC_BUTTON: tak_mu_to_ukaz|=JS_OBJ_T_BUTTON ; break;
default: /* internal_error("Invalid form element type.\n"); */
tak_mu_to_ukaz=0;break;
}
if (tak_mu_to_ukaz&&!(pole_vole=add_id(pole_vole,n_items,tak_mu_to_ukaz)))return NULL;
}
a_je_po_ptakach:
/* find in all rq==NULL */
foreach(struct f_data_c, ff, lff, fd->subframes)
if (!(ff->rq)) pole_vole=find_in_subframes(js_ctx,ff,pole_vole,n_items,takhle_tomu_u_nas_nadavame);
return pole_vole;
}
/* resolves name of an object, returns field of all ID's with the name
* obj_id is object in which we're searching
* takhle_tomu_u_nas_nadavame is the searched name
* context is identifier of the javascript context
* n_items is number of returned items
*
* on error returns NULL
*/
long *jsint_resolve(void *context, long obj_id, char *takhle_tomu_u_nas_nadavame,int *n_items)
{
struct f_data_c *fd;
struct f_data_c *js_ctx=(struct f_data_c*)context;
long *pole_vole;
*n_items=0;
if (!takhle_tomu_u_nas_nadavame||!(*takhle_tomu_u_nas_nadavame))return NULL;
pole_vole=mem_alloc(sizeof(long));
switch(jsint_object_type(obj_id))
{
/* searched object can be a frame, image, form or a form element */
case JS_OBJ_T_DOCUMENT:
case JS_OBJ_T_FRAME:
fd=jsint_find_document(obj_id);
if (!fd||!(jsint_can_access(js_ctx,fd)))break;
pole_vole=find_in_subframes(js_ctx, fd, pole_vole, n_items, takhle_tomu_u_nas_nadavame);
break;
/* searched name can be a form element */
case JS_OBJ_T_FORM:
{
struct form_control *fc=jsint_find_object(js_ctx,obj_id);
struct form_control *f;
struct list_head *lf;
if (!fc){mem_free(pole_vole);return NULL;}
if (!(js_ctx->f_data)){mem_free(pole_vole);return NULL;}
foreachback(struct form_control, f, lf, js_ctx->f_data->forms)
{
if (f->form_num==fc->form_num) /* this form */
if (f->name&&!strcmp(cast_const_char f->name,cast_const_char takhle_tomu_u_nas_nadavame)) /* this IS Jim Beam */
{
long tak_mu_to_ukaz=0;
tak_mu_to_ukaz=(f->g_ctrl_num)<<JS_OBJ_MASK_SIZE;
switch (f->type)
{
case FC_TEXT: tak_mu_to_ukaz|=JS_OBJ_T_TEXT; break;
case FC_PASSWORD: tak_mu_to_ukaz|=JS_OBJ_T_PASSWORD; break;
case FC_TEXTAREA: tak_mu_to_ukaz|=JS_OBJ_T_TEXTAREA; break;
case FC_CHECKBOX: tak_mu_to_ukaz|=JS_OBJ_T_CHECKBOX; break;
case FC_RADIO: tak_mu_to_ukaz|=JS_OBJ_T_RADIO; break;
case FC_IMAGE:
case FC_SELECT: tak_mu_to_ukaz|=JS_OBJ_T_SELECT; break;
case FC_SUBMIT: tak_mu_to_ukaz|=JS_OBJ_T_SUBMIT ; break;
case FC_RESET: tak_mu_to_ukaz|=JS_OBJ_T_RESET ; break;
case FC_HIDDEN: tak_mu_to_ukaz|=JS_OBJ_T_HIDDEN ; break;
case FC_BUTTON: tak_mu_to_ukaz|=JS_OBJ_T_BUTTON ; break;
default: tak_mu_to_ukaz=0;break;
/* internal_error("Invalid form element type.\n"); */
}
if ((tak_mu_to_ukaz&JS_OBJ_MASK)&&!(pole_vole=add_id(pole_vole,n_items,tak_mu_to_ukaz)))return NULL;
}
}
}
break;
}
if (!pole_vole)return NULL;
if (!(*n_items)){mem_free(pole_vole);pole_vole=NULL;}
return pole_vole;
}
/*------------------------>>>>>>>> UPCALLS <<<<<<<<-------------------------*/
/* tyhle upcally se volaji ze select smycky:
void js_upcall_confirm(void *data)
void js_upcall_alert(void * data)
void js_upcall_close_window(void *data)
void js_upcall_get_string(void *data)
void js_upcall_goto_url(void * data)
void js_upcall_goto_history(void * data)
void js_upcall_set_image_src(void* data)
V nich se musi volat js_spec_vykill_timer, aby se znicil timer, ktery upcall
zavolal.
Tyto upcally MUZOU dostavat f_data_c pointer primo, protoze kdyz ten f_data_c
umre a s nim i ten JS, tak se timery znicej --- tudiz se nic nestane.
*/
static void redraw_document(struct f_data_c *f)
{
/*
if (F) {
f->xl = -1;
f->yl = -1;
draw_to_window(f->ses->win, draw_doc, f);
}
*/
draw_fd(f);
}
/* returns ID of a document with the javascript */
long js_upcall_get_document_id(void *data)
{
struct f_data_c *fd;
if (!data)internal_error("js_upcall_get_document_id called with NULL pointer!");
fd=(struct f_data_c*)data;
return (((fd->id)<<JS_OBJ_MASK_SIZE)|JS_OBJ_T_DOCUMENT);
}
/* same as get_document_id, but returned type is FRAME */
static long js_upcall_get_frame_id(void *data)
{
struct f_data_c *fd;
if (!data)internal_error("js_upcall_get_document_id called with NULL pointer!");
fd=(struct f_data_c*)data;
return (((fd->id)<<JS_OBJ_MASK_SIZE)|JS_OBJ_T_FRAME);
}
/* writes "len" bytes starting at "str" to document */
void js_upcall_document_write(void *p, unsigned char *str, int len)
{
int pos;
unsigned char *s;
struct f_data_c *fd = p;
struct js_state *js = fd->js;
if (!js)return;
if (!js->active) internal_error("js_upcall_document_write: no request active");
if (js->active->write_pos == -1) return;
if (js->active->write_pos < 0) internal_error("js_upcall_document_write: js->active trashed");
if (!js->src) {
size_t len;
unsigned char *s;
if (get_file(fd->rq, &s, &len)) return;
if (len > MAXINT) return;
js->src = memacpy(s, len);
js->srclen = len;
}
if ((unsigned)js->srclen + (unsigned)len > MAXINT) overalloc();
if ((unsigned)js->srclen + (unsigned)len < (unsigned)len) overalloc();
s = mem_realloc(js->src, js->srclen + len);
js->src = s;
if ((pos = js->srclen - js->active->write_pos) < 0) pos = 0;
memmove(s + pos + len, s + pos, js->srclen - pos);
memcpy(s + pos, str, len);
js->srclen += len;
js->newdata += len;
js_zaflaknuto_pameti += len;
js->active->wrote = 1;
}
/* returns title of actual document (=document in the script context) */
/* when an error occurs, returns NULL */
/* returned string should be deallocated after use */
unsigned char *js_upcall_get_title(void *data)
{
struct f_data_c *fd;
unsigned char *title, *t;
if (!data)internal_error("js_upcall_get_title called with NULL pointer!");
fd=(struct f_data_c *)data;
title=mem_alloc(MAX_STR_LEN);
if (!(get_current_title(fd,title,MAX_STR_LEN))){mem_free(title);return NULL;}
if (fd->f_data)
{
t = convert(fd->f_data->opt.cp, fd->f_data->cp, title, NULL);
mem_free(title);
title=t;
}
return title;
}
/* sets title of actual document (=document in the script context) */
/* string title will be deallocated after use */
void js_upcall_set_title(void *data, unsigned char *title)
{
unsigned char *t;
struct f_data_c *fd;
int l=0;
if (!data)internal_error("js_upcall_get_title called with NULL pointer!");
fd=(struct f_data_c *)data;
if (!title)return;
if (!(fd->f_data)){mem_free(title);return;}
if (fd->f_data->title)mem_free(fd->f_data->title);