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lightningd/jsonrpc.c: Set JSON-RPC socket permissions by command line.

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Changelog-Added: Can now set the permissions on the JSON-RPC socket by `--rpc-file-mode`.
This commit is contained in:
ZmnSCPxj jxPCSnmZ
2020-01-24 10:20:45 +08:00
committed by Christian Decker
parent f619124cb9
commit 7f4ed54b46
6 changed files with 66 additions and 4 deletions
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34
lightningd/options.c
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@@ -105,6 +105,30 @@ static char *opt_set_s32(const char *arg, s32 *u)
return NULL;
}
static char *opt_set_mode(const char *arg, mode_t *m)
{
char *endp;
long l;
assert(arg != NULL);
/* Ensure length, and starts with 0. */
if (strlen(arg) != 4 || arg[0] != '0')
return tal_fmt(NULL, "'%s' is not a file mode", arg);
/* strtol, manpage, yech. */
errno = 0;
l = strtol(arg, &endp, 8); /* Octal. */
if (errno || *endp)
return tal_fmt(NULL, "'%s' is not a file mode", arg);
*m = l;
/* Range check not needed, previous strlen checks ensures only
* 9-bit, which fits mode_t (unless your Unix is seriously borked).
*/
return NULL;
}
static char *opt_add_addr_withtype(const char *arg,
struct lightningd *ld,
enum addr_listen_announce ala,
@@ -225,6 +249,11 @@ static void opt_show_s32(char buf[OPT_SHOW_LEN], const s32 *u)
snprintf(buf, OPT_SHOW_LEN, "%"PRIi32, *u);
}
static void opt_show_mode(char buf[OPT_SHOW_LEN], const mode_t *m)
{
snprintf(buf, OPT_SHOW_LEN, "\"%04o\"", (int) *m);
}
static char *opt_set_rgb(const char *arg, struct lightningd *ld)
{
assert(arg != NULL);
@@ -842,6 +871,11 @@ static void register_opts(struct lightningd *ld)
"Set the password to encrypt hsm_secret with. If no password is passed through command line, "
"you will be prompted to enter it.");
opt_register_arg("--rpc-file-mode", &opt_set_mode, &opt_show_mode,
&ld->rpc_filemode,
"Set the file mode (permissions) for the "
"JSON-RPC socket");
opt_register_logging(ld);
opt_register_version();