mirror of
https://github.com/ElementsProject/lightning.git
synced 2024-11-19 18:11:28 +01:00
f376a9c24c
Didn't generally fixup inside comments and the bech32 code: reformatting that is just anti-social. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
144 lines
3.3 KiB
C
144 lines
3.3 KiB
C
#include "utils.h"
|
|
#include <bitcoin/chainparams.h>
|
|
#include <ccan/list/list.h>
|
|
#include <ccan/str/hex/hex.h>
|
|
#include <ccan/tal/str/str.h>
|
|
#include <locale.h>
|
|
|
|
secp256k1_context *secp256k1_ctx;
|
|
const tal_t *tmpctx;
|
|
|
|
const struct chainparams *chainparams;
|
|
|
|
bool is_elements(const struct chainparams *chainparams)
|
|
{
|
|
return chainparams->is_elements;
|
|
}
|
|
|
|
#if DEVELOPER
|
|
/* If you've got a softref, we assume no reallocs. */
|
|
static void dont_move_softref(tal_t *ctx, enum tal_notify_type ntype, void *info)
|
|
{
|
|
abort();
|
|
}
|
|
#endif
|
|
|
|
static void softref_nullify(tal_t *obj, void **ptr)
|
|
{
|
|
*ptr = NULL;
|
|
#if DEVELOPER
|
|
tal_del_notifier(obj, dont_move_softref);
|
|
#endif
|
|
}
|
|
|
|
static void softref_cleanup(const tal_t *outer, void **ptr)
|
|
{
|
|
if (*ptr) {
|
|
tal_del_destructor2(*ptr, softref_nullify, ptr);
|
|
}
|
|
#if DEVELOPER
|
|
tal_del_notifier(outer, dont_move_softref);
|
|
#endif
|
|
}
|
|
|
|
void set_softref_(const tal_t *outer, size_t outersize, void **ptr, tal_t *obj)
|
|
{
|
|
/* pointer is inside outer, right? */
|
|
assert((char *)ptr >= (char *)outer);
|
|
assert((char *)ptr < (char *)outer + outersize);
|
|
|
|
/* This is harmless if there was no prior, otherwise constrains the
|
|
* leak: we don't have enough information in softref_nullify to
|
|
* clear softref_cleanup */
|
|
tal_del_destructor2(outer, softref_cleanup, ptr);
|
|
|
|
if (obj) {
|
|
tal_add_destructor2(outer, softref_cleanup, ptr);
|
|
tal_add_destructor2(obj, softref_nullify, ptr);
|
|
#if DEVELOPER
|
|
tal_add_notifier(obj, TAL_NOTIFY_MOVE, dont_move_softref);
|
|
#endif
|
|
}
|
|
|
|
#if DEVELOPER
|
|
tal_add_notifier(outer, TAL_NOTIFY_MOVE, dont_move_softref);
|
|
#endif
|
|
|
|
*ptr = obj;
|
|
}
|
|
|
|
void clear_softref_(const tal_t *outer, size_t outersize, void **ptr)
|
|
{
|
|
assert((char *)ptr >= (char *)outer);
|
|
assert((char *)ptr < (char *)outer + outersize);
|
|
|
|
if (*ptr) {
|
|
tal_del_destructor2(outer, softref_cleanup, ptr);
|
|
tal_del_destructor2(*ptr, softref_nullify, ptr);
|
|
#if DEVELOPER
|
|
tal_del_notifier(*ptr, dont_move_softref);
|
|
#endif
|
|
}
|
|
|
|
#if DEVELOPER
|
|
tal_del_notifier(outer, dont_move_softref);
|
|
#endif
|
|
|
|
*ptr = NULL;
|
|
}
|
|
|
|
char *tal_hexstr(const tal_t *ctx, const void *data, size_t len)
|
|
{
|
|
char *str = tal_arr(ctx, char, hex_str_size(len));
|
|
hex_encode(data, len, str, hex_str_size(len));
|
|
return str;
|
|
}
|
|
|
|
char *tal_hex(const tal_t *ctx, const tal_t *data)
|
|
{
|
|
return tal_hexstr(ctx, data, tal_bytelen(data));
|
|
}
|
|
|
|
u8 *tal_hexdata(const tal_t *ctx, const void *str, size_t len)
|
|
{
|
|
u8 *data = tal_arr(ctx, u8, hex_data_size(len));
|
|
if (!hex_decode(str, len, data, hex_data_size(len)))
|
|
return NULL;
|
|
return data;
|
|
}
|
|
|
|
/* Use the POSIX C locale. */
|
|
void setup_locale(void)
|
|
{
|
|
setlocale(LC_ALL, "C");
|
|
putenv("LC_ALL=C"); /* For exec{l,lp,v,vp}(...) */
|
|
}
|
|
|
|
/* Initial creation of tmpctx. */
|
|
void setup_tmpctx(void)
|
|
{
|
|
tmpctx = tal_arr_label(NULL, char, 0, "tmpctx");
|
|
}
|
|
|
|
/* Free any children of tmpctx. */
|
|
void clean_tmpctx(void)
|
|
{
|
|
const tal_t *p;
|
|
|
|
/* Don't actually free tmpctx: we hand pointers to it around. */
|
|
while ((p = tal_first(tmpctx)) != NULL)
|
|
tal_free(p);
|
|
}
|
|
|
|
void tal_arr_remove_(void *p, size_t elemsize, size_t n)
|
|
{
|
|
// p is a pointer-to-pointer for tal_resize.
|
|
char *objp = *(char **)p;
|
|
size_t len = tal_bytelen(objp);
|
|
assert(len % elemsize == 0);
|
|
assert((n + 1) * elemsize <= len);
|
|
memmove(objp + elemsize * n, objp + elemsize * (n+1),
|
|
len - (elemsize * (n+1)));
|
|
tal_resize((char **)p, len - elemsize);
|
|
}
|