lukechilds
/
lightning
mirror of https://github.com/lukechilds/lightning.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Browse Source

lightningd: plugin init routines return error string or NULL. 

Once again, this unifies plugin_kill() into the caller.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
nifty/pset-pre
Rusty Russell 5 years ago
parent
852d785afb
commit
69b07cf5a6
2 changed files with 85 additions and 96 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 147
      lightningd/plugin.c
  2. 8
      lightningd/plugin.h

147
lightningd/plugin.c
View File

@ -606,7 +606,7 @@ char *plugin_opt_set(const char *arg, struct plugin_opt *popt)
/* Add a single plugin option to the plugin as well as registering it with the
* command line options. */
static bool plugin_opt_add(struct plugin *plugin, const char *buffer,
static const char *plugin_opt_add(struct plugin *plugin, const char *buffer,
const jsmntok_t *opt)
{
const jsmntok_t *nametok, *typetok, *defaulttok, *desctok;
@ -617,9 +617,8 @@ static bool plugin_opt_add(struct plugin *plugin, const char *buffer,
defaulttok = json_get_member(buffer, opt, "default");
if (!typetok || !nametok || !desctok) {
plugin_kill(plugin,
return tal_fmt(plugin,
"An option is missing either \"name\", \"description\" or \"type\"");
return false;
}
popt = tal(plugin, struct plugin_opt);
@ -663,8 +662,8 @@ static bool plugin_opt_add(struct plugin *plugin, const char *buffer,
*popt->value->as_bool = false;
} else {
plugin_kill(plugin, "Only \"string\", \"int\", \"bool\", and \"flag\" options are supported");
return false;
return tal_fmt(plugin,
"Only \"string\", \"int\", \"bool\", and \"flag\" options are supported");
}
if (!defaulttok)
popt->description = json_strdup(popt, buffer, desctok);
@ -678,33 +677,34 @@ static bool plugin_opt_add(struct plugin *plugin, const char *buffer,
opt_register_arg(popt->name, plugin_opt_set, NULL, popt,
popt->description);
return true;
return NULL;
}
/* Iterate through the options in the manifest response, and add them
* to the plugin and the command line options */
static bool plugin_opts_add(struct plugin *plugin,
static const char *plugin_opts_add(struct plugin *plugin,
const char *buffer,
const jsmntok_t *resulttok)
{
const jsmntok_t *options = json_get_member(buffer, resulttok, "options");
if (!options) {
plugin_kill(plugin,
return tal_fmt(plugin,
"\"result.options\" was not found in the manifest");
return false;
}
if (options->type != JSMN_ARRAY) {
plugin_kill(plugin, "\"result.options\" is not an array");
return false;
return tal_fmt(plugin, "\"result.options\" is not an array");
}
for (size_t i = 0; i < options->size; i++)
if (!plugin_opt_add(plugin, buffer, json_get_arr(options, i)))
return false;
for (size_t i = 0; i < options->size; i++) {
const char *err;
err = plugin_opt_add(plugin, buffer, json_get_arr(options, i));
if (err)
return err;
}
return true;
return NULL;
}
static void json_stream_forward_change_id(struct json_stream *stream,
@ -808,7 +808,7 @@ static struct command_result *plugin_rpcmethod_dispatch(struct command *cmd,
return command_still_pending(cmd);
}
static bool plugin_rpcmethod_add(struct plugin *plugin,
static const char *plugin_rpcmethod_add(struct plugin *plugin,
const char *buffer,
const jsmntok_t *meth)
{
@ -823,32 +823,28 @@ static bool plugin_rpcmethod_add(struct plugin *plugin,
usagetok = json_get_member(buffer, meth, "usage");
if (!nametok || nametok->type != JSMN_STRING) {
plugin_kill(plugin,
return tal_fmt(plugin,
"rpcmethod does not have a string \"name\": %.*s",
meth->end - meth->start, buffer + meth->start);
return false;
}
if (!desctok || desctok->type != JSMN_STRING) {
plugin_kill(plugin,
return tal_fmt(plugin,
"rpcmethod does not have a string "
"\"description\": %.*s",
meth->end - meth->start, buffer + meth->start);
return false;
}
if (longdesctok && longdesctok->type != JSMN_STRING) {
plugin_kill(plugin,
return tal_fmt(plugin,
"\"long_description\" is not a string: %.*s",
meth->end - meth->start, buffer + meth->start);
return false;
}
if (usagetok && usagetok->type != JSMN_STRING) {
plugin_kill(plugin,
return tal_fmt(plugin,
"\"usage\" is not a string: %.*s",
meth->end - meth->start, buffer + meth->start);
return false;
}
cmd = notleak(tal(plugin, struct json_command));
@ -865,26 +861,24 @@ static bool plugin_rpcmethod_add(struct plugin *plugin,
if (usagetok)
usage = json_strdup(tmpctx, buffer, usagetok);
else if (!deprecated_apis) {
plugin_kill(plugin,
return tal_fmt(plugin,
"\"usage\" not provided by plugin");
return false;
} else
usage = "[params]";
cmd->deprecated = false;
cmd->dispatch = plugin_rpcmethod_dispatch;
if (!jsonrpc_command_add(plugin->plugins->ld->jsonrpc, cmd, usage)) {
log_broken(plugin->log,
return tal_fmt(plugin,
"Could not register method \"%s\", a method with "
"that name is already registered",
cmd->name);
return false;
}
tal_arr_expand(&plugin->methods, cmd->name);
return true;
return NULL;
}
static bool plugin_rpcmethods_add(struct plugin *plugin,
static const char *plugin_rpcmethods_add(struct plugin *plugin,
const char *buffer,
const jsmntok_t *resulttok)
{
@ -892,22 +886,26 @@ static bool plugin_rpcmethods_add(struct plugin *plugin,
json_get_member(buffer, resulttok, "rpcmethods");
if (!methods)
return false;
return tal_fmt(plugin, "\"result.rpcmethods\" missing");
if (methods->type != JSMN_ARRAY) {
plugin_kill(plugin,
return tal_fmt(plugin,
"\"result.rpcmethods\" is not an array");
return false;
}
for (size_t i = 0; i < methods->size; i++)
if (!plugin_rpcmethod_add(plugin, buffer,
json_get_arr(methods, i)))
return false;
return true;
for (size_t i = 0; i < methods->size; i++) {
const char *err;
err = plugin_rpcmethod_add(plugin, buffer,
json_get_arr(methods, i));
if (err)
return err;
}
return NULL;
}
static bool plugin_subscriptions_add(struct plugin *plugin, const char *buffer,
static const char *plugin_subscriptions_add(struct plugin *plugin,
const char *buffer,
const jsmntok_t *resulttok)
{
const jsmntok_t *subscriptions =
@ -915,60 +913,55 @@ static bool plugin_subscriptions_add(struct plugin *plugin, const char *buffer,
if (!subscriptions) {
plugin->subscriptions = NULL;
return true;
return NULL;
}
plugin->subscriptions = tal_arr(plugin, char *, 0);
if (subscriptions->type != JSMN_ARRAY) {
plugin_kill(plugin, "\"result.subscriptions\" is not an array");
return false;
return tal_fmt(plugin, "\"result.subscriptions\" is not an array");
}
for (int i = 0; i < subscriptions->size; i++) {
char *topic;
const jsmntok_t *s = json_get_arr(subscriptions, i);
if (s->type != JSMN_STRING) {
plugin_kill(
plugin,
"result.subscriptions[%d] is not a string: %s", i,
plugin->buffer);
return false;
return tal_fmt(plugin,
"result.subscriptions[%d] is not a string: '%.*s'", i,
json_tok_full_len(s),
json_tok_full(buffer, s));
}
topic = json_strdup(plugin, plugin->buffer, s);
if (!notifications_have_topic(topic)) {
plugin_kill(
return tal_fmt(
plugin,
"topic '%s' is not a known notification topic", topic);
return false;
}
tal_arr_expand(&plugin->subscriptions, topic);
}
return true;
return NULL;
}
static bool plugin_hooks_add(struct plugin *plugin, const char *buffer,
static const char *plugin_hooks_add(struct plugin *plugin, const char *buffer,
const jsmntok_t *resulttok)
{
const jsmntok_t *hookstok = json_get_member(buffer, resulttok, "hooks");
if (!hookstok)
return true;
return NULL;
for (int i = 0; i < hookstok->size; i++) {
char *name = json_strdup(NULL, plugin->buffer,
char *name = json_strdup(tmpctx, plugin->buffer,
json_get_arr(hookstok, i));
if (!plugin_hook_register(plugin, name)) {
plugin_kill(plugin,
return tal_fmt(plugin,
"could not register hook '%s', either the "
"name doesn't exist or another plugin "
"already registered it.",
name);
tal_free(name);
return false;
}
tal_free(name);
}
return true;
return NULL;
}
static void plugin_manifest_timeout(struct plugin *plugin)
@ -981,23 +974,25 @@ static void plugin_manifest_timeout(struct plugin *plugin)
fatal("Can't recover from plugin failure, terminating.");
}
bool plugin_parse_getmanifest_response(const char *buffer,
static const char *plugin_parse_getmanifest_response(const char *buffer,
const jsmntok_t *toks,
const jsmntok_t *idtok,
struct plugin *plugin)
{
const jsmntok_t *resulttok, *dynamictok, *featurestok, *tok;
const char *err;
resulttok = json_get_member(buffer, toks, "result");
if (!resulttok || resulttok->type != JSMN_OBJECT)
return false;
return tal_fmt(plugin, "Invalid/missing result tok in '%.*s'",
json_tok_full_len(toks),
json_tok_full(buffer, toks));
dynamictok = json_get_member(buffer, resulttok, "dynamic");
if (dynamictok && !json_to_bool(buffer, dynamictok, &plugin->dynamic)) {
plugin_kill(plugin, "Bad 'dynamic' field ('%.*s')",
return tal_fmt(plugin, "Bad 'dynamic' field ('%.*s')",
json_tok_full_len(dynamictok),
json_tok_full(buffer, dynamictok));
return false;
}
featurestok = json_get_member(buffer, resulttok, "featurebits");
@ -1024,40 +1019,39 @@ bool plugin_parse_getmanifest_response(const char *buffer,
have_featurebits |= tal_bytelen(fset->bits[i]) > 0;
if (!fset->bits[i]) {
plugin_kill(
return tal_fmt(
plugin,
"Featurebits returned by plugin is not a "
"valid hexadecimal string: %.*s",
tok->end - tok->start, buffer + tok->start);
return true;
}
}
if (plugin->dynamic && have_featurebits) {
plugin_kill(plugin,
return tal_fmt(plugin,
"Custom featurebits only allows for non-dynamic "
"plugins: dynamic=%d, featurebits=%.*s",
plugin->dynamic,
featurestok->end - featurestok->start,
buffer + featurestok->start);
return true;
}
if (!feature_set_or(plugin->plugins->ld->our_features, fset)) {
plugin_kill(plugin,
return tal_fmt(plugin,
"Custom featurebits already present");
return true;
}
}
if (!plugin_opts_add(plugin, buffer, resulttok) ||
!plugin_rpcmethods_add(plugin, buffer, resulttok) ||
!plugin_subscriptions_add(plugin, buffer, resulttok) ||
!plugin_hooks_add(plugin, buffer, resulttok))
return false;
err = plugin_opts_add(plugin, buffer, resulttok);
if (!err)
err = plugin_rpcmethods_add(plugin, buffer, resulttok);
if (!err)
err = plugin_subscriptions_add(plugin, buffer, resulttok);
if (!err)
err = plugin_hooks_add(plugin, buffer, resulttok);
plugin->plugin_state = NEEDS_INIT;
return true;
return err;
}
bool plugins_any_in_state(const struct plugins *plugins, enum plugin_state state)
@ -1093,8 +1087,11 @@ static void plugin_manifest_cb(const char *buffer,
const jsmntok_t *idtok,
struct plugin *plugin)
{
if (!plugin_parse_getmanifest_response(buffer, toks, idtok, plugin)) {
plugin_kill(plugin, "%s: Bad response to getmanifest.", plugin->cmd);
const char *err;
err = plugin_parse_getmanifest_response(buffer, toks, idtok, plugin);
if (err) {
plugin_kill(plugin, "%s", err);
return;
}

8
lightningd/plugin.h
View File

@ -247,14 +247,6 @@ bool plugins_any_in_state(const struct plugins *plugins, enum plugin_state state
*/
bool plugins_all_in_state(const struct plugins *plugins, enum plugin_state state);
/**
* Read and treat (populate options, methods, ...) the `getmanifest` response.
*/
bool plugin_parse_getmanifest_response(const char *buffer,
const jsmntok_t *toks,
const jsmntok_t *idtok,
struct plugin *plugin);
/**
* This populates the jsonrpc request with the plugin/lightningd specifications
*/

Write Preview
Loading…
Cancel
Save