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elinks/src/scripting/perl/hooks.c
Witold Filipczyk 0fea79cc8f [cflags] Removed -Wno-pointer-sign
Likely some new bugs were introduced by this change.
The long term goal is clean compilation by g++.
2021-01-02 16:20:27 +01:00

247 lines
4.9 KiB
C

/* Perl scripting hooks */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "elinks.h"
#include "cache/cache.h"
#include "main/event.h"
#include "protocol/uri.h"
#include "scripting/perl/core.h"
#include "scripting/perl/hooks.h"
#include "session/location.h"
#include "session/session.h"
#include "util/string.h"
#define my_XPUSHs(s, slen) XPUSHs(sv_2mortal(newSVpvn(s, slen)))
/* The events that will trigger the functions below and what they are expected
* to do is explained in doc/events.txt */
static inline void
do_script_hook_goto_url(struct session *ses, char **url)
{
int count;
dSP; /* Keep in variables declaration block. */
ENTER;
SAVETMPS;
PUSHMARK(SP);
my_XPUSHs(*url, strlen(*url));
if (!ses || !have_location(ses)) {
XPUSHs(sv_2mortal(newSV(0)));
} else {
char *uri = struri(cur_loc(ses)->vs.uri);
my_XPUSHs(uri, strlen(uri));
}
PUTBACK;
count = call_pv("goto_url_hook", G_EVAL | G_SCALAR);
if (SvTRUE(ERRSV)) count = 0; /* FIXME: error message ? */
SPAGAIN;
if (count == 1) {
#ifndef CONFIG_PERL_POPPX_WITHOUT_N_A
STRLEN n_a; /* Used by POPpx macro. */
#endif
char *new_url = POPpx;
if (new_url) {
char *n = stracpy(new_url);
if (n) {
mem_free_set(url, n);
}
}
}
PUTBACK;
FREETMPS;
LEAVE;
}
static enum evhook_status
script_hook_goto_url(va_list ap, void *data)
{
char **url = va_arg(ap, char **);
struct session *ses = va_arg(ap, struct session *);
if (my_perl && *url)
do_script_hook_goto_url(ses, url);
return EVENT_HOOK_STATUS_NEXT;
}
static inline void
do_script_hook_follow_url(char **url)
{
int count;
dSP; /* Keep in variables declaration block. */
ENTER;
SAVETMPS;
PUSHMARK(SP);
my_XPUSHs(*url, strlen(*url));
PUTBACK;
count = call_pv("follow_url_hook", G_EVAL | G_SCALAR);
if (SvTRUE(ERRSV)) count = 0; /* FIXME: error message ? */
SPAGAIN;
if (count == 1) {
#ifndef CONFIG_PERL_POPPX_WITHOUT_N_A
STRLEN n_a; /* Used by POPpx macro. */
#endif
char *new_url = POPpx;
if (new_url) {
char *n = stracpy(new_url);
if (n) {
mem_free_set(url, n);
}
}
}
PUTBACK;
FREETMPS;
LEAVE;
}
static enum evhook_status
script_hook_follow_url(va_list ap, void *data)
{
char **url = va_arg(ap, char **);
if (my_perl && *url)
do_script_hook_follow_url(url);
return EVENT_HOOK_STATUS_NEXT;
}
static inline void
do_script_hook_pre_format_html(char *url, struct cache_entry *cached,
struct fragment *fragment)
{
int count;
dSP; /* Keep in variables declaration block. */
ENTER;
SAVETMPS;
PUSHMARK(SP);
my_XPUSHs(url, strlen(url));
my_XPUSHs(fragment->data, fragment->length);
PUTBACK;
count = call_pv("pre_format_html_hook", G_EVAL | G_SCALAR);
if (SvTRUE(ERRSV)) count = 0; /* FIXME: error message ? */
SPAGAIN;
if (count == 1) {
SV *new_html_sv = POPs;
STRLEN new_html_len;
char *new_html = SvPV(new_html_sv, new_html_len);
if (new_html) {
add_fragment(cached, 0, new_html, new_html_len);
normalize_cache_entry(cached, new_html_len);
}
}
PUTBACK;
FREETMPS;
LEAVE;
}
static enum evhook_status
script_hook_pre_format_html(va_list ap, void *data)
{
struct session *ses = va_arg(ap, struct session *);
struct cache_entry *cached = va_arg(ap, struct cache_entry *);
struct fragment *fragment = get_cache_fragment(cached);
char *url = struri(cached->uri);
if (my_perl && ses && url && cached->length && *fragment->data)
do_script_hook_pre_format_html(url, cached, fragment);
return EVENT_HOOK_STATUS_NEXT;
}
static inline void
do_script_hook_get_proxy(char **new_proxy_url, char *url)
{
int count;
dSP; /* Keep in variables declaration block. */
ENTER;
SAVETMPS;
PUSHMARK(SP);
my_XPUSHs(url, strlen(url));
PUTBACK;
count = call_pv("proxy_for_hook", G_EVAL | G_SCALAR);
if (SvTRUE(ERRSV)) count = 0; /* FIXME: error message ? */
SPAGAIN;
if (count == 1) {
if (TOPs == &PL_sv_undef) {
(void) POPs;
mem_free_set(new_proxy_url, NULL);
} else {
#ifndef CONFIG_PERL_POPPX_WITHOUT_N_A
STRLEN n_a; /* Used by POPpx macro. */
#endif
char *new_url = POPpx;
mem_free_set(new_proxy_url, stracpy(new_url));
}
}
PUTBACK;
FREETMPS;
LEAVE;
}
static enum evhook_status
script_hook_get_proxy(va_list ap, void *data)
{
char **new_proxy_url = va_arg(ap, char **);
char *url = va_arg(ap, char *);
if (my_perl && new_proxy_url && url)
do_script_hook_get_proxy(new_proxy_url, url);
return EVENT_HOOK_STATUS_NEXT;
}
static inline void
do_script_hook_quit(void)
{
dSP;
PUSHMARK(SP);
call_pv("quit_hook", G_EVAL | G_DISCARD | G_NOARGS);
}
static enum evhook_status
script_hook_quit(va_list ap, void *data)
{
if (my_perl)
do_script_hook_quit();
return EVENT_HOOK_STATUS_NEXT;
}
struct event_hook_info perl_scripting_hooks[] = {
{ "goto-url", 0, script_hook_goto_url, NULL },
{ "follow-url", 0, script_hook_follow_url, NULL },
{ "pre-format-html", 0, script_hook_pre_format_html, NULL },
{ "get-proxy", 0, script_hook_get_proxy, NULL },
{ "quit", 0, script_hook_quit, NULL },
NULL_EVENT_HOOK_INFO,
};