int main(int argc, char** argv)
{
#ifdef Log_KEYS
fprintf(stderr, "Log_LEVEL = KEYS, EXPECT TO SEE PRIVATE KEYS IN YOUR LOGS!\n");
#endif
Assert_true(argc > 0);
struct Except* eh = NULL;
// Allow it to allocate 4MB
struct Allocator* allocator = MallocAllocator_new(1<<22);
struct Random* rand = Random_new(allocator, NULL, eh);
struct EventBase* eventBase = EventBase_new(allocator);
if (argc == 2) {
// one argument
if (strcmp(argv[1], "--help") == 0) {
return usage(argv[0]);
} else if (strcmp(argv[1], "--genconf") == 0) {
return genconf(rand);
} else if (strcmp(argv[1], "--pidfile") == 0) {
// Performed after reading the configuration
} else if (strcmp(argv[1], "--reconf") == 0) {
// Performed after reading the configuration
} else if (strcmp(argv[1], "--bench") == 0) {
return benchmark();
} else if (strcmp(argv[1], "--version") == 0) {
//printf("Version ID: %s\n", RouterModule_gitVersion());
return 0;
} else {
fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], argv[1]);
fprintf(stderr, "Try `%s --help' for more information.\n", argv[0]);
return -1;
}
} else if (argc > 2) {
// more than one argument?
fprintf(stderr, "%s: too many arguments\n", argv[0]);
fprintf(stderr, "Try `%s --help' for more information.\n", argv[0]);
return -1;
}
if (isatty(STDIN_FILENO)) {
// We were started from a terminal
// The chances an user wants to type in a configuration
// bij hand are pretty slim so we show him the usage
return usage(argv[0]);
} else {
// We assume stdin is a configuration file and that we should
// start routing
}
struct Reader* stdinReader = FileReader_new(stdin, allocator);
Dict config;
if (JsonBencSerializer_get()->parseDictionary(stdinReader, allocator, &config)) {
fprintf(stderr, "Failed to parse configuration.\n");
return -1;
}
struct Writer* logWriter = FileWriter_new(stdout, allocator);
struct Log* logger = WriterLog_new(logWriter, allocator);
// --------------------- Setup Pipes to Angel --------------------- //
int pipeToAngel[2];
int pipeFromAngel[2];
if (Pipe_createUniPipe(pipeToAngel) || Pipe_createUniPipe(pipeFromAngel)) {
Except_raise(eh, -1, "Failed to create pipes to angel [%s]", Errno_getString());
}
char pipeToAngelStr[8];
snprintf(pipeToAngelStr, 8, "%d", pipeToAngel[0]);
char pipeFromAngelStr[8];
snprintf(pipeFromAngelStr, 8, "%d", pipeFromAngel[1]);
char* args[] = { "angel", pipeToAngelStr, pipeFromAngelStr, NULL };
// --------------------- Spawn Angel --------------------- //
String* privateKey = Dict_getString(&config, String_CONST("privateKey"));
String* corePath = getCorePath(allocator);
if (!corePath) {
Except_raise(eh, -1, "Can't find a usable cjdns core executable, "
"make sure it is in the same directory as cjdroute");
}
if (!privateKey) {
Except_raise(eh, -1, "Need to specify privateKey.");
}
Log_info(logger, "Forking angel to background.");
Process_spawn(corePath->bytes, args);
// --------------------- Get Admin --------------------- //
Dict* configAdmin = Dict_getDict(&config, String_CONST("admin"));
String* adminPass = Dict_getString(configAdmin, String_CONST("password"));
String* adminBind = Dict_getString(configAdmin, String_CONST("bind"));
if (!adminPass) {
adminPass = String_newBinary(NULL, 32, allocator);
Random_base32(rand, (uint8_t*) adminPass->bytes, 32);
adminPass->len = strlen(adminPass->bytes);
}
if (!adminBind) {
adminBind = String_new("127.0.0.1:0", allocator);
}
// --------------------- Get user for angel to setuid() ---------------------- //
String* securityUser = NULL;
List* securityConf = Dict_getList(&config, String_CONST("security"));
for (int i = 0; i < List_size(securityConf); i++) {
securityUser = Dict_getString(List_getDict(securityConf, i), String_CONST("setuser"));
if (securityUser) {
int64_t* ea = Dict_getInt(List_getDict(securityConf, i), String_CONST("exemptAngel"));
if (ea && *ea) {
securityUser = NULL;
}
break;
}
}
// --------------------- Pre-Configure Angel ------------------------- //
Dict* preConf = Dict_new(allocator);
Dict* adminPreConf = Dict_new(allocator);
Dict_putDict(preConf, String_CONST("admin"), adminPreConf, allocator);
Dict_putString(adminPreConf, String_CONST("core"), corePath, allocator);
Dict_putString(preConf, String_CONST("privateKey"), privateKey, allocator);
Dict_putString(adminPreConf, String_CONST("bind"), adminBind, allocator);
Dict_putString(adminPreConf, String_CONST("pass"), adminPass, allocator);
if (securityUser) {
Dict_putString(adminPreConf, String_CONST("user"), securityUser, allocator);
}
#define CONFIG_BUFF_SIZE 1024
uint8_t buff[CONFIG_BUFF_SIZE] = {0};
struct Writer* toAngelWriter = ArrayWriter_new(buff, CONFIG_BUFF_SIZE - 1, allocator);
if (StandardBencSerializer_get()->serializeDictionary(toAngelWriter, preConf)) {
Except_raise(eh, -1, "Failed to serialize pre-configuration");
}
write(pipeToAngel[1], buff, toAngelWriter->bytesWritten(toAngelWriter));
Log_keys(logger, "Sent [%s] to angel process.", buff);
// --------------------- Get Response from Angel --------------------- //
uint32_t amount = Waiter_getData(buff, CONFIG_BUFF_SIZE, pipeFromAngel[0], eventBase, eh);
Dict responseFromAngel;
struct Reader* responseFromAngelReader = ArrayReader_new(buff, amount, allocator);
if (StandardBencSerializer_get()->parseDictionary(responseFromAngelReader,
allocator,
&responseFromAngel))
{
Except_raise(eh, -1, "Failed to parse pre-configuration response [%s]", buff);
}
// --------------------- Get Admin Addr/Port/Passwd --------------------- //
Dict* responseFromAngelAdmin = Dict_getDict(&responseFromAngel, String_CONST("admin"));
adminBind = Dict_getString(responseFromAngelAdmin, String_CONST("bind"));
if (!adminBind) {
Except_raise(eh, -1, "didn't get address and port back from angel");
}
struct Sockaddr_storage adminAddr;
if (Sockaddr_parse(adminBind->bytes, &adminAddr)) {
Except_raise(eh, -1, "Unable to parse [%s] as an ip address port, eg: 127.0.0.1:11234",
adminBind->bytes);
}
// sanity check
Assert_true(EventBase_eventCount(eventBase) == 0);
// --------------------- Configuration ------------------------- //
Configurator_config(&config,
&adminAddr.addr,
adminPass,
eventBase,
logger,
allocator);
return 0;
}
/** @return a string representing the address and port to connect to. */
static String* initAngel(int fromAngel,
int toAngel,
int corePipes[2][2],
struct PipeInterface** piOut,
struct EventBase* eventBase,
struct Log* logger,
struct Allocator* alloc,
struct Random* rand)
{
#define TO_CORE (corePipes[0][1])
#define FROM_CORE (corePipes[1][0])
#define TO_ANGEL_AS_CORE (corePipes[1][1])
#define FROM_ANGEL_AS_CORE (corePipes[0][0])
Dict core = Dict_CONST(
String_CONST("fromCore"), Int_OBJ(FROM_CORE), Dict_CONST(
String_CONST("toCore"), Int_OBJ(TO_CORE), NULL
));
Dict admin = Dict_CONST(
String_CONST("bind"), String_OBJ(String_CONST("127.0.0.1")), Dict_CONST(
String_CONST("core"), Dict_OBJ(&core), Dict_CONST(
String_CONST("pass"), String_OBJ(String_CONST("abcd")), NULL
)));
Dict message = Dict_CONST(
String_CONST("admin"), Dict_OBJ(&admin), NULL
);
struct Allocator* tempAlloc;
BufferAllocator_STACK(tempAlloc, 1024);
#define BUFFER_SZ 1023
uint8_t buff[BUFFER_SZ + 1] = {0};
struct Writer* w = ArrayWriter_new(buff, BUFFER_SZ, tempAlloc);
StandardBencSerializer_get()->serializeDictionary(w, &message);
Log_info(logger, "Writing intial configuration to angel on [%d] config: [%s]", toAngel, buff);
write(toAngel, buff, w->bytesWritten(w));
// This is angel->core data, we can throw this away.
//Waiter_getData(buff, BUFFER_SZ, fromAngel, eventBase, NULL);
//Log_info(logger, "Init message from angel to core: [%s]", buff);
Bits_memset(buff, 0, BUFFER_SZ);
struct PipeInterface* pi =
PipeInterface_new(FROM_ANGEL_AS_CORE, TO_ANGEL_AS_CORE, eventBase, logger, alloc, rand);
*piOut = pi;
Log_info(logger, "PipeInterface [%p] is now ready.", (void*)pi);
// Make sure the angel sends data to the core.
InterfaceWaiter_waitForData(&pi->generic, eventBase, alloc, NULL);
// Send response on behalf of core.
char coreToAngelResponse[128] = " PADDING "
"\xff\xff\xff\xff"
"d"
"5:error" "4:none"
"e";
char* start = strchr(coreToAngelResponse, '\xff');
struct Message m = {
.bytes = (uint8_t*) start,
.length = strlen(start),
.padding = start - coreToAngelResponse
};
pi->generic.sendMessage(&m, &pi->generic);
// This is angel->client data, it will tell us which port was bound.
Waiter_getData(buff, BUFFER_SZ, fromAngel, eventBase, NULL);
printf("Response from angel to client: [%s]\n", buff);
struct Reader* reader = ArrayReader_new(buff, BUFFER_SZ, tempAlloc);
Dict configStore;
Dict* config = &configStore;
Assert_true(!StandardBencSerializer_get()->parseDictionary(reader, tempAlloc, config));
Dict* responseAdmin = Dict_getDict(config, String_CONST("admin"));
String* bind = Dict_getString(responseAdmin, String_CONST("bind"));
Assert_true(bind);
return String_clone(bind, alloc);
}
/**
* This spawns itself as the Angel process which spawns itself again as the core process.
* The "core process" pipes all of its inputs back to the originating process
*/
struct AdminTestFramework* AdminTestFramework_setUp(int argc, char** argv)
{
if (argc > 1 && !strcmp("angel", argv[1])) {
exit(AngelInit_main(argc, argv));
}
struct Allocator* alloc = CanaryAllocator_new(MallocAllocator_new(1<<20), NULL);
struct Writer* logwriter = FileWriter_new(stdout, alloc);
Assert_always(logwriter);
struct Log* logger = WriterLog_new(logwriter, alloc);
struct EventBase* eventBase = EventBase_new(alloc);
struct Random* rand = Random_new(alloc, NULL);
int fromAngel;
int toAngel;
int corePipes[2][2];
if (Pipe_createUniPipe(corePipes[0]) || Pipe_createUniPipe(corePipes[1])) {
Except_raise(NULL, -1, "Failed to create pipes [%s]", Errno_getString());
}
spawnAngel(&fromAngel, &toAngel);
struct PipeInterface* pi;
String* addrStr =
initAngel(fromAngel, toAngel, corePipes, &pi, eventBase, logger, alloc, rand);
Log_info(logger, "Angel initialized.");
String* password = String_new("abcd", alloc);
struct Admin* admin =
Admin_new(&pi->generic, alloc, logger, eventBase, password);
// Now setup the client.
struct sockaddr_storage addr;
int addrLen = sizeof(struct sockaddr_storage);
Bits_memset(&addr, 0, sizeof(struct sockaddr_storage));
Assert_true(!evutil_parse_sockaddr_port(addrStr->bytes, (struct sockaddr*) &addr, &addrLen));
struct AdminClient* client =
AdminClient_new((uint8_t*) &addr, addrLen, password, eventBase, logger, alloc);
Assert_always(client);
return alloc->clone(sizeof(struct AdminTestFramework), alloc, &(struct AdminTestFramework) {
.admin = admin,
.client = client,
.alloc = alloc,
.eventBase = eventBase,
.logger = logger,
.addr = alloc->clone(addrLen, alloc, &addr),
.addrLen = addrLen,
.angelInterface = &pi->generic
});
}
static void sendConfToCore(struct Interface* toCoreInterface,
struct Allocator* alloc,
Dict* config,
struct Except* eh,
struct Log* logger)
{
#define CONFIG_BUFF_SIZE 1024
uint8_t buff[CONFIG_BUFF_SIZE + 32] = {0};
uint8_t* start = buff + 32;
struct Writer* writer = ArrayWriter_new(start, CONFIG_BUFF_SIZE - 33, alloc);
if (StandardBencSerializer_get()->serializeDictionary(writer, config)) {
Except_raise(eh, -1, "Failed to serialize pre-configuration for core.");
}
struct Message m = {
.bytes = start,
.length = writer->bytesWritten(writer),
.padding = 32
};
Log_keys(logger, "Sent [%d] bytes to core [%s].", m.length, m.bytes);
toCoreInterface->sendMessage(&m, toCoreInterface);
}
static void setUser(char* user, struct Log* logger, struct Except* eh)
{
struct Jmp jmp;
Jmp_try(jmp) {
Security_setUser(user, logger, &jmp.handler);
} Jmp_catch {
if (jmp.code == Security_setUser_PERMISSION) {
return;
}
Except_raise(eh, jmp.code, "%s", jmp.message);
}
}
/**
* Input:
* {
* "admin": {
* "core": "/path/to/core/binary",
* "bind": "127.0.0.1:12345",
* "pass": "******",
* "user": "******"
* }
* }
* for example:
* d5:admind4:core30:./build/admin/angel/cjdns-core4:bind15:127.0.0.1:123454:pass4:abcdee
*
* Pre-existing core mode:
* {
* "admin": {
* "core": {
* "fromCore": 12,
* "toCore": 14
* },
* "bind": "127.0.0.1:12345",
* "pass": "******",
* "user": "******"
* }
* }
*
* If "core" is a dictionary, the angel will behave as though the core is already spawned and
* it will read from the core on the file descriptor given by "fromCore" and write to the file
* given by "toCore".
*
* "user" is optional, if set the angel will setuid() that user's uid.
*/
int AngelInit_main(int argc, char** argv)
{
struct Except* eh = NULL;
int inFromClientNo;
int outToClientNo;
if (argc < 3 || (inFromClientNo = atoi(argv[2])) == 0) {
inFromClientNo = STDIN_FILENO;
}
if (argc < 4 || (outToClientNo = atoi(argv[3])) == 0) {
outToClientNo = STDOUT_FILENO;
}
struct Allocator* alloc = MallocAllocator_new(1<<21);
struct Writer* logWriter = FileWriter_new(stdout, alloc);
struct Log* logger = WriterLog_new(logWriter, alloc);
struct Random* rand = Random_new(alloc, logger, eh);
alloc = CanaryAllocator_new(alloc, rand);
struct Allocator* tempAlloc = Allocator_child(alloc);
struct EventBase* eventBase = EventBase_new(alloc);
Log_debug(logger, "Initializing angel with input [%d] and output [%d]",
inFromClientNo, outToClientNo);
Log_debug(logger, "Getting pre-configuration from client");
#define CONFIG_BUFF_SIZE 1024
uint8_t buff[CONFIG_BUFF_SIZE] = {0};
Waiter_getData(buff, CONFIG_BUFF_SIZE, inFromClientNo, eventBase, eh);
Log_debug(logger, "Finished getting pre-configuration from client");
struct Reader* reader = ArrayReader_new(buff, CONFIG_BUFF_SIZE, tempAlloc);
Dict config;
if (StandardBencSerializer_get()->parseDictionary(reader, tempAlloc, &config)) {
Except_raise(eh, -1, "Failed to parse configuration.");
}
Dict* admin = Dict_getDict(&config, String_CONST("admin"));
String* core = Dict_getString(admin, String_CONST("core"));
String* bind = Dict_getString(admin, String_CONST("bind"));
String* pass = Dict_getString(admin, String_CONST("pass"));
String* user = Dict_getString(admin, String_CONST("user"));
int toCore = -1;
int fromCore = -1;
if (!core) {
Dict* coreDict = Dict_getDict(admin, String_CONST("core"));
int64_t* toCorePtr = Dict_getInt(coreDict, String_CONST("toCore"));
int64_t* fromCorePtr = Dict_getInt(coreDict, String_CONST("fromCore"));
toCore = (toCorePtr) ? *toCorePtr : -1;
fromCore = (fromCorePtr) ? *fromCorePtr : -1;
}
if (!bind || !pass || (!core && (toCore == -1 || fromCore == -1))) {
Except_raise(eh, -1, "missing configuration params in preconfig. [%s]", buff);
}
if (core) {
Log_info(logger, "Initializing core [%s]", core->bytes);
initCore(core->bytes, &toCore, &fromCore, eh);
}
Log_debug(logger, "Sending pre-configuration to core.");
struct PipeInterface* pif =
PipeInterface_new(fromCore, toCore, eventBase, logger, alloc, rand);
struct Interface* coreIface = &pif->generic;
PipeInterface_waitUntilReady(pif);
sendConfToCore(coreIface, tempAlloc, &config, eh, logger);
struct Message* coreResponse = InterfaceWaiter_waitForData(coreIface, eventBase, tempAlloc, eh);
if (write(outToClientNo, coreResponse->bytes, coreResponse->length)) {
// Ignore the result of write() without the compiler complaining.
}
#ifdef Log_KEYS
uint8_t lastChar = coreResponse->bytes[coreResponse->length-1];
coreResponse->bytes[coreResponse->length-1] = 0;
Log_keys(logger, "Sent [%s%c] to client.", coreResponse->bytes, lastChar);
coreResponse->bytes[coreResponse->length-1] = lastChar;
#endif
if (user) {
setUser(user->bytes, logger, eh);
}
Allocator_free(tempAlloc);
Angel_start(coreIface, eventBase, logger, alloc);
return 0;
}