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