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#include "configdir.h"
#include "log.h"
#include <ccan/opt/opt.h>
#include <ccan/tal/grab_file/grab_file.h>
#include <ccan/tal/path/path.h>
#include <ccan/tal/str/str.h>
#include <errno.h>
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_charp, opt_show_charp,
configdir,
"working directory: all other files are relative to this");
opt_register_arg("--rpc-file", opt_set_charp, opt_show_charp,
rpc_filename,
"Set JSON-RPC socket (or /dev/tty)");
}
/* FIXME: make this nicer! */
static void config_log_stderr_exit(const char *fmt, ...)
{
char *msg;
va_list ap;
va_start(ap, fmt);
/* This is the format we expect: mangle it to remove '--'. */
if (streq(fmt, "%s: %.*s: %s")) {
const char *argv0 = va_arg(ap, const char *);
unsigned int len = va_arg(ap, unsigned int);
const char *arg = va_arg(ap, const char *);
const char *problem = va_arg(ap, const char *);
msg = tal_fmt(NULL, "%s line %s: %.*s: %s",
argv0, arg+strlen(arg)+1, len-2, arg+2, problem);
} else {
msg = tal_vfmt(NULL, fmt, ap);
}
va_end(ap);
fatal("%s", msg);
}
/* We turn the config file into cmdline arguments. */
void opt_parse_from_config(const tal_t *ctx)
{
char *contents, **lines;
char **argv;
int i, argc;
contents = grab_file(ctx, "config");
/* Doesn't have to exist. */
if (!contents) {
if (errno != ENOENT)
fatal("Opening and reading config: %s",
strerror(errno));
return;
}
lines = tal_strsplit(contents, contents, "\r\n", STR_NO_EMPTY);
/* We have to keep argv around, since opt will point into it */
argv = tal_arr(ctx, char *, argc = 1);
argv[0] = "lightning config file";
for (i = 0; i < tal_count(lines) - 1; i++) {
if (strstarts(lines[i], "#"))
continue;
/* Only valid forms are "foo" and "foo=bar" */
tal_resize(&argv, argc+1);
/* Stash line number after nul. */
argv[argc++] = tal_fmt(argv, "--%s%c%u", lines[i], 0, i+1);
}
tal_resize(&argv, argc+1);
argv[argc] = NULL;
opt_parse(&argc, argv, config_log_stderr_exit);
tal_free(contents);
}