core-lightning/common/configdir.c
Rusty Russell b00525b8c8 options: don't leak memory when people override options.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-12-13 22:46:10 +01:00

39 lines
925 B
C

#include "configdir.h"
#include <ccan/opt/opt.h>
#include <ccan/tal/path/path.h>
#include <ccan/tal/str/str.h>
#include <errno.h>
/* Override a tal string; frees the old one. */
char *opt_set_talstr(const char *arg, char **p)
{
tal_free(*p);
return opt_set_charp(arg, p);
}
static char *default_configdir(const tal_t *ctx)
{
char *path;
const char *env = getenv("HOME");
if (!env)
return ".";
path = path_join(ctx, env, ".lightning");
return path;
}
void configdir_register_opts(const tal_t *ctx,
char **configdir, char **rpc_filename)
{
*configdir = default_configdir(ctx);
*rpc_filename = "lightning-rpc";
opt_register_early_arg("--lightning-dir", opt_set_talstr, opt_show_charp,
configdir,
"working directory: all other files are relative to this");
opt_register_arg("--rpc-file", opt_set_talstr, opt_show_charp,
rpc_filename,
"Set JSON-RPC socket (or /dev/tty)");
}