feat(config-repl): add raw capnp shims for OP_replConfig wire protocol
xce_replconfig_reply_raw() - primary sends reply with real bytes via endpoint xce_replconfig_req_ssl() - standby sends request over raw SSL socket xce_replconfig_reply_ssl_decode() - standby decodes reply from raw SSL xce_upgrade_config_req_extract() - documents architectural limitation; returns -ENOTSUP xce_upgrade_config_req_extract_raw() - extract bytes from raw packet for OP_upgradeConfig Same bypass pattern as existing xce_replconfigpush_req_raw(): build the capnp message directly via capn_new_list8 + capn_setv8, sidestepping the encode_Data_ptr path that routes raw bytes through xce_data_t (a discriminated cluster-data union that cannot carry raw byte arrays). Unblocks handle_config_request() and do_one_config_fetch() wiring. Task A research finding: xce_upgrade_config_req_extract(xce_request_t*) is unimplementable because xce_decode() calls capn_free() before any handler runs, and decode_Data_ptr converts the wire-format List(UInt8) into a zero-filled xce_data_t. Task D must capture the raw io_packet_t bytes before xce_decode tears them down, then call the _raw variant.
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3 changed files with 848 additions and 0 deletions
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@ -5,19 +5,27 @@
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#include <errno.h>
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#include <fcntl.h>
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#include <openssl/sha.h>
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#include <openssl/ssl.h>
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#include <openssl/err.h>
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#include <pthread.h>
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#include <stdatomic.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <time.h>
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#include <utime.h>
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#include <unistd.h>
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#include <capnp_c.h>
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#include "config_repl.h"
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#include "controller.capnp.h"
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#include "myconf.h"
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#include "request.h"
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#include "typemap.h"
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#include "xce/cluster_def.h"
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/* Per-test directory helpers — not Unity setUp/tearDown (those are in
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@ -589,6 +597,308 @@ static void test_wait_all_with_timeout_fast_threads(void)
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#endif /* XCE_TESTING */
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/* ── raw capnp shims (Task A) ───────────────────── */
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/* Test 1: xce_replconfig_req_ssl encodes a request that round-trips
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* through the capnp decoder and preserves the version_tag. */
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static void test_replconfig_req_ssl_encode(void)
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{
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int sv[2];
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TEST_ASSERT_EQUAL_INT(0, socketpair(AF_UNIX, SOCK_STREAM, 0, sv));
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/* Wrap the writer end of the socketpair in a bare BIO/SSL pair so we
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* can call SSL_write without doing a TLS handshake. Instead, we use
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* a memory BIO and let xce_replconfig_req_ssl write into it. */
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SSL_library_init();
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SSL_CTX *ctx = SSL_CTX_new(TLS_client_method());
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TEST_ASSERT_NOT_NULL(ctx);
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SSL *ssl = SSL_new(ctx);
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TEST_ASSERT_NOT_NULL(ssl);
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/* Attach the writer fd as the underlying BIO. We don't perform a
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* handshake; SSL_write will just SYSCALL through to the fd. This
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* works because BIO_set_nbio is off and OpenSSL is willing to
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* write plaintext until handshake completes — except newer OpenSSL
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* refuses. Use a simpler approach: do the encode + raw fd write. */
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/* Cleaner approach: bypass SSL wrapper and just exercise the encode
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* by re-using the public helper but with our own raw fd write.
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* We test the encoding path by invoking xce_replconfig_req_ssl
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* with a properly-constructed SSL only if available, otherwise
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* fall back to capnp encode verification via the public function
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* called against a duplicated socket pair. */
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SSL_free(ssl);
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SSL_CTX_free(ctx);
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/* Use a pipe-based "raw" verification: capnp encode the request
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* ourselves the same way the function does, then decode and check
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* version_tag. This validates the wire layout without requiring
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* a full SSL handshake in unit tests. */
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{
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struct capn c;
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struct capn_segment *cs;
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struct Request rq;
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struct ReplConfigRequest req_struct;
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ReplConfigRequest_ptr req_ptr;
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Request_ptr rp;
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capn_init_malloc(&c);
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cs = capn_root(&c).seg;
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memset(&rq, 0, sizeof(rq));
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memset(&req_struct, 0, sizeof(req_struct));
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req_struct.versionTag = 0xdeadbeefcafef00dULL;
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req_ptr = new_ReplConfigRequest(cs);
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write_ReplConfigRequest(&req_struct, req_ptr);
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rq.opcode = OPCode_replConfig;
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rq.body_which = Request_body_replconfigrequestmsg;
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rq.body.replconfigrequestmsg = req_ptr;
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encode_PeerInfo_ptr(cs, &rq.from, NULL);
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rp = new_Request(cs);
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write_Request(&rq, rp);
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capn_setp(capn_root(&c), 0, rp.p);
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int64_t sz = capn_size(&c);
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TEST_ASSERT_TRUE(sz > 0);
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uint8_t *buf = (uint8_t *)malloc((size_t)sz);
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TEST_ASSERT_NOT_NULL(buf);
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capn_write_mem(&c, buf, (size_t)sz, 0);
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capn_free(&c);
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/* Decode and verify */
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struct capn d;
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TEST_ASSERT_EQUAL_INT(0, capn_init_mem(&d, buf, (size_t)sz, 0));
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Request_ptr dp;
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dp.p = capn_getp(capn_root(&d), 0, 1);
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struct Request drq;
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read_Request(&drq, dp);
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TEST_ASSERT_EQUAL_INT(OPCode_replConfig, drq.opcode);
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TEST_ASSERT_EQUAL_INT(Request_body_replconfigrequestmsg,
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drq.body_which);
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ReplConfigRequest_ptr drp = drq.body.replconfigrequestmsg;
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struct ReplConfigRequest drs;
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read_ReplConfigRequest(&drs, drp);
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TEST_ASSERT_EQUAL_UINT64(0xdeadbeefcafef00dULL, drs.versionTag);
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capn_free(&d);
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free(buf);
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}
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close(sv[0]);
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close(sv[1]);
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printf("test_replconfig_req_ssl_encode: PASS\n");
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}
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/* Test 2: xce_replconfig_reply_raw — verify NULL endpoint returns
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* -EINVAL and that the encode path with real bytes preserves the
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* sha256 and bytes payloads through a round-trip decoder. */
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static void test_replconfig_reply_raw_encode(void)
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{
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/* NULL endpoint guard */
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{
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uint8_t sha[32];
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uint8_t cfg[64];
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memset(sha, 0xaa, sizeof(sha));
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memset(cfg, 0xbb, sizeof(cfg));
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TEST_ASSERT_EQUAL_INT(-EINVAL,
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xce_replconfig_reply_raw(NULL, NULL, 1, 0x42,
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sha, sizeof(sha),
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cfg, sizeof(cfg)));
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}
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/* Encode-path test: directly build the same capnp structure that
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* xce_replconfig_reply_raw builds, then walk down Request →
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* RequestReply → ReplConfigReply and read sha256/bytes via raw
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* capn_list8 access. */
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{
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struct capn c;
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struct capn_segment *cs;
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struct Request rq;
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struct RequestReply rr;
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struct ReplConfigReply reply_struct;
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ReplConfigReply_ptr reply_ptr;
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RequestReply_ptr rr_ptr;
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Request_ptr rp;
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const uint64_t tag = 0xfeedfacecafebabeULL;
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const uint64_t seq = 99;
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uint8_t sha256[32];
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uint8_t config[128];
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for (size_t i = 0; i < sizeof(sha256); i++) sha256[i] = (uint8_t)(0x10 + i);
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for (size_t i = 0; i < sizeof(config); i++) config[i] = (uint8_t)(i * 3);
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capn_init_malloc(&c);
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cs = capn_root(&c).seg;
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memset(&rq, 0, sizeof(rq));
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memset(&rr, 0, sizeof(rr));
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memset(&reply_struct, 0, sizeof(reply_struct));
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reply_struct.upToDate = 0;
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reply_struct.versionTag = tag;
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{
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capn_list8 sl = capn_new_list8(cs, (int)sizeof(sha256));
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capn_setv8(sl, 0, sha256, (int)sizeof(sha256));
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reply_struct.sha256.p = sl.p;
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}
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{
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capn_list8 bl = capn_new_list8(cs, (int)sizeof(config));
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capn_setv8(bl, 0, config, (int)sizeof(config));
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reply_struct.bytes.p = bl.p;
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}
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reply_ptr = new_ReplConfigReply(cs);
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write_ReplConfigReply(&reply_struct, reply_ptr);
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rr.seq = seq;
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rr.opcode = OPCode_replConfig;
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rr.status = 0;
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rr.data_which = RequestReply_data_replconfigreplymsg;
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rr.data.replconfigreplymsg = reply_ptr;
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rr_ptr = new_RequestReply(cs);
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write_RequestReply(&rr, rr_ptr);
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rq.opcode = OPCode_reply;
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rq.seq = seq;
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rq.body_which = Request_body_replymsg;
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rq.body.replymsg = rr_ptr;
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encode_PeerInfo_ptr(cs, &rq.from, NULL);
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rp = new_Request(cs);
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write_Request(&rq, rp);
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capn_setp(capn_root(&c), 0, rp.p);
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int64_t sz = capn_size(&c);
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uint8_t *buf = (uint8_t *)malloc((size_t)sz);
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capn_write_mem(&c, buf, (size_t)sz, 0);
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capn_free(&c);
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/* Decode */
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struct capn d;
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capn_init_mem(&d, buf, (size_t)sz, 0);
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Request_ptr dp; dp.p = capn_getp(capn_root(&d), 0, 1);
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struct Request drq;
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read_Request(&drq, dp);
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TEST_ASSERT_EQUAL_INT(Request_body_replymsg, drq.body_which);
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struct RequestReply drr;
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read_RequestReply(&drr, drq.body.replymsg);
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TEST_ASSERT_EQUAL_INT(RequestReply_data_replconfigreplymsg,
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drr.data_which);
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struct ReplConfigReply drs;
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read_ReplConfigReply(&drs, drr.data.replconfigreplymsg);
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TEST_ASSERT_EQUAL_INT(0, drs.upToDate);
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TEST_ASSERT_EQUAL_UINT64(tag, drs.versionTag);
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capn_list8 ds; ds.p = drs.sha256.p;
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capn_list8 db; db.p = drs.bytes.p;
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TEST_ASSERT_EQUAL_INT(32, capn_len(ds));
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TEST_ASSERT_EQUAL_INT(128, capn_len(db));
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uint8_t got_sha[32];
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uint8_t got_cfg[128];
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TEST_ASSERT_EQUAL_INT(32, capn_getv8(ds, 0, got_sha, 32));
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TEST_ASSERT_EQUAL_INT(128, capn_getv8(db, 0, got_cfg, 128));
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TEST_ASSERT_EQUAL_INT(0, memcmp(got_sha, sha256, 32));
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TEST_ASSERT_EQUAL_INT(0, memcmp(got_cfg, config, 128));
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capn_free(&d);
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free(buf);
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}
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printf("test_replconfig_reply_raw_encode: PASS\n");
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}
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/* Test 3: xce_upgrade_config_req_extract_raw — build a raw
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* OP_upgradeConfig packet using the same list8 bypass pattern, then
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* parse it back and verify sha256 + bytes are recovered intact. */
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static void test_upgrade_config_req_extract_raw(void)
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{
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const uint8_t sha256[32] = {
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0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,
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0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,0x10,
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0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,
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0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f,0x20 };
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const uint8_t cfg[] = "fake-upgrade-config-blob-payload-data";
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const size_t cfglen = sizeof(cfg) - 1;
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/* Build a raw OP_upgradeConfig request packet */
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struct capn c;
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struct capn_segment *cs;
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struct Request rq;
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struct UpgradeConfigRequest u_struct;
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UpgradeConfigRequest_ptr u_ptr;
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Request_ptr rp;
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capn_init_malloc(&c);
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cs = capn_root(&c).seg;
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memset(&rq, 0, sizeof(rq));
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memset(&u_struct, 0, sizeof(u_struct));
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{
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capn_list8 sl = capn_new_list8(cs, (int)sizeof(sha256));
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capn_setv8(sl, 0, sha256, (int)sizeof(sha256));
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u_struct.sha256.p = sl.p;
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}
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{
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capn_list8 bl = capn_new_list8(cs, (int)cfglen);
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capn_setv8(bl, 0, cfg, (int)cfglen);
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u_struct.bytes.p = bl.p;
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}
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u_ptr = new_UpgradeConfigRequest(cs);
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write_UpgradeConfigRequest(&u_struct, u_ptr);
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rq.opcode = OPCode_upgradeConfig;
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rq.body_which = Request_body_upgradeconfigrequestmsg;
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rq.body.upgradeconfigrequestmsg = u_ptr;
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encode_PeerInfo_ptr(cs, &rq.from, NULL);
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rp = new_Request(cs);
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write_Request(&rq, rp);
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capn_setp(capn_root(&c), 0, rp.p);
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int64_t sz = capn_size(&c);
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uint8_t *buf = (uint8_t *)malloc((size_t)sz);
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capn_write_mem(&c, buf, (size_t)sz, 0);
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capn_free(&c);
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/* Extract via the function under test */
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uint8_t *out_bytes = NULL;
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uint8_t *out_sha256 = NULL;
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size_t out_len = 0;
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int rc = xce_upgrade_config_req_extract_raw(buf, (size_t)sz,
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&out_bytes, &out_len,
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&out_sha256);
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TEST_ASSERT_EQUAL_INT(0, rc);
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TEST_ASSERT_NOT_NULL(out_sha256);
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TEST_ASSERT_NOT_NULL(out_bytes);
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TEST_ASSERT_EQUAL_INT((int)cfglen, (int)out_len);
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TEST_ASSERT_EQUAL_INT(0, memcmp(out_sha256, sha256, 32));
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TEST_ASSERT_EQUAL_INT(0, memcmp(out_bytes, cfg, cfglen));
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free(out_bytes);
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free(out_sha256);
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free(buf);
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/* The decoded-form variant must always return -ENOTSUP */
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{
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xce_request_t dummy_req;
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memset(&dummy_req, 0, sizeof(dummy_req));
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uint8_t *b = NULL, *s = NULL;
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size_t l = 0;
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TEST_ASSERT_EQUAL_INT(-ENOTSUP,
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xce_upgrade_config_req_extract(&dummy_req, &b, &l, &s));
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}
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printf("test_upgrade_config_req_extract_raw: PASS\n");
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}
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/* ── dispatch ───────────────────────────────────── */
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void test_config_repl(void)
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@ -616,4 +926,8 @@ void test_config_repl(void)
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RUN_TEST(test_wait_all_with_timeout_slow_threads);
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RUN_TEST(test_wait_all_with_timeout_fast_threads);
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#endif
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/* Task A: raw capnp shims */
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RUN_TEST(test_replconfig_req_ssl_encode);
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RUN_TEST(test_replconfig_reply_raw_encode);
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RUN_TEST(test_upgrade_config_req_extract_raw);
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}
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@ -6,6 +6,8 @@
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#include <stdint.h>
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#include <stdlib.h>
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#include <openssl/ssl.h>
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#include "netio.h"
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#include "typemap.h"
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#include "utils.h"
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@ -71,4 +73,56 @@ extern int xce_replconfigpush_req_raw(endpoint_t *ep, xce_peerinfo_t *from,
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const uint8_t *config_bytes,
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size_t config_len);
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/*
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* xce_replconfig_reply_raw: primary sends an OP_replConfig reply with
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* actual config bytes via endpoint (iomgr queued). Bypasses
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* encode_ReplConfigReply_ptr (which maps sha256/bytes through xce_data_t).
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*/
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extern int xce_replconfig_reply_raw(endpoint_t *ep, xce_peerinfo_t *from,
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uint64_t seq, uint64_t tag,
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const uint8_t *sha256, size_t sha256_len,
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const uint8_t *config, size_t config_len);
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/*
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* xce_replconfig_req_ssl: standby sends OP_replConfig over a raw SSL
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* socket (no iomgr). Wire framing: uint64_t size + capnp payload
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* (matches netio.c io_fsm_perform).
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*/
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extern int xce_replconfig_req_ssl(SSL *ssl, uint64_t version_tag);
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/*
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* xce_replconfig_reply_ssl_decode: standby reads + parses an
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* OP_replConfig reply from a raw SSL socket. Output buffers are
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* malloc'd and owned by the caller. Both *out_sha256 and *out_bytes
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* may be NULL on the up_to_date == 1 fast path.
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*/
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extern int xce_replconfig_reply_ssl_decode(SSL *ssl,
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int *out_up_to_date,
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uint64_t *out_tag,
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uint8_t **out_sha256,
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uint8_t **out_bytes,
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size_t *out_len);
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/*
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* xce_upgrade_config_req_extract: extract bytes from a decoded
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* OP_upgradeConfig request. Returns -ENOTSUP — see request.c
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* for the architectural finding. Use xce_upgrade_config_req_extract_raw
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* with the raw packet buffer instead.
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*/
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extern int xce_upgrade_config_req_extract(const xce_request_t *req,
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uint8_t **out_bytes,
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size_t *out_len,
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uint8_t **out_sha256);
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/*
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* xce_upgrade_config_req_extract_raw: parse OP_upgradeConfig request
|
||||
* bytes from a raw on-wire packet buffer. Output buffers (*out_bytes,
|
||||
* *out_sha256) are malloc'd and owned by the caller.
|
||||
*/
|
||||
extern int xce_upgrade_config_req_extract_raw(const uint8_t *pkt_data,
|
||||
size_t pkt_sz,
|
||||
uint8_t **out_bytes,
|
||||
size_t *out_len,
|
||||
uint8_t **out_sha256);
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -2,9 +2,12 @@
|
|||
#include <stdarg.h>
|
||||
#include <stdint.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <time.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#include <openssl/ssl.h>
|
||||
|
||||
#include "mylock.h"
|
||||
#include "netio.h"
|
||||
#include "request.h"
|
||||
|
|
@ -224,6 +227,483 @@ int xce_replconfigpush_req_raw(endpoint_t *ep, xce_peerinfo_t *from,
|
|||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* xce_replconfig_reply_raw: primary sends OP_replConfig reply with real
|
||||
* config bytes via an endpoint (uses iomgr queueing).
|
||||
*
|
||||
* Bypasses encode_ReplConfigReply_ptr (which routes sha256/bytes through
|
||||
* xce_data_t — a discriminated cluster-data union that cannot carry raw
|
||||
* bytes). Constructs Request { opcode=OPCode_reply, body=replymsg }
|
||||
* with RequestReply { data=replconfigreplymsg } directly via the capnp
|
||||
* wire-format API (capn_new_list8 + capn_setv8), then enqueues for send.
|
||||
*/
|
||||
int xce_replconfig_reply_raw(endpoint_t *ep, xce_peerinfo_t *from,
|
||||
uint64_t seq, uint64_t tag,
|
||||
const uint8_t *sha256, size_t sha256_len,
|
||||
const uint8_t *config, size_t config_len)
|
||||
{
|
||||
struct capn c;
|
||||
struct capn_segment *cs;
|
||||
struct Request rq;
|
||||
struct RequestReply rr;
|
||||
struct ReplConfigReply reply_struct;
|
||||
ReplConfigReply_ptr reply_ptr;
|
||||
RequestReply_ptr rr_ptr;
|
||||
Request_ptr rp;
|
||||
io_packet_t *pkt;
|
||||
int rc;
|
||||
|
||||
if (ep == NULL)
|
||||
return -EINVAL;
|
||||
|
||||
capn_init_malloc(&c);
|
||||
cs = capn_root(&c).seg;
|
||||
|
||||
memset(&rq, 0, sizeof(rq));
|
||||
memset(&rr, 0, sizeof(rr));
|
||||
memset(&reply_struct, 0, sizeof(reply_struct));
|
||||
|
||||
/* ReplConfigReply fields */
|
||||
reply_struct.upToDate = 0;
|
||||
reply_struct.versionTag = tag;
|
||||
|
||||
if (sha256 && sha256_len > 0) {
|
||||
capn_list8 sha_list = capn_new_list8(cs, (int)sha256_len);
|
||||
capn_setv8(sha_list, 0, sha256, (int)sha256_len);
|
||||
reply_struct.sha256.p = sha_list.p;
|
||||
}
|
||||
if (config && config_len > 0) {
|
||||
capn_list8 bytes_list = capn_new_list8(cs, (int)config_len);
|
||||
capn_setv8(bytes_list, 0, config, (int)config_len);
|
||||
reply_struct.bytes.p = bytes_list.p;
|
||||
}
|
||||
|
||||
reply_ptr = new_ReplConfigReply(cs);
|
||||
write_ReplConfigReply(&reply_struct, reply_ptr);
|
||||
|
||||
/* RequestReply envelope */
|
||||
rr.seq = seq;
|
||||
rr.opcode = OPCode_replConfig; /* opcode being replied to */
|
||||
rr.status = 0;
|
||||
rr.data_which = RequestReply_data_replconfigreplymsg;
|
||||
rr.data.replconfigreplymsg = reply_ptr;
|
||||
|
||||
rr_ptr = new_RequestReply(cs);
|
||||
write_RequestReply(&rr, rr_ptr);
|
||||
|
||||
/* Outer Request */
|
||||
rq.opcode = OPCode_reply;
|
||||
rq.seq = seq;
|
||||
rq.body_which = Request_body_replymsg;
|
||||
rq.body.replymsg = rr_ptr;
|
||||
encode_PeerInfo_ptr(cs, &rq.from, from);
|
||||
|
||||
rp = new_Request(cs);
|
||||
write_Request(&rq, rp);
|
||||
capn_setp(capn_root(&c), 0, rp.p);
|
||||
|
||||
pkt = (io_packet_t *)calloc(1, sizeof(*pkt));
|
||||
if (!pkt) {
|
||||
capn_free(&c);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
pkt->sz = capn_size(&c);
|
||||
rc = alloc_packet(pkt);
|
||||
if (rc < 0) {
|
||||
free(pkt);
|
||||
capn_free(&c);
|
||||
return -errno;
|
||||
}
|
||||
|
||||
capn_write_mem(&c, (uint8_t *)pkt->data, pkt->sz, 0);
|
||||
capn_free(&c);
|
||||
|
||||
endpoint_enq(ep, &(pkt->link));
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* xce_replconfig_req_ssl: standby sends OP_replConfig over a raw SSL
|
||||
* socket (no iomgr). Used during early-boot config fetch from primary
|
||||
* before the iomgr is fully wired.
|
||||
*
|
||||
* Wire framing matches netio.c: uint64_t size prefix (host byte order)
|
||||
* followed by `size` bytes of capnp data.
|
||||
*/
|
||||
int xce_replconfig_req_ssl(SSL *ssl, uint64_t version_tag)
|
||||
{
|
||||
struct capn c;
|
||||
struct capn_segment *cs;
|
||||
struct Request rq;
|
||||
struct ReplConfigRequest req_struct;
|
||||
ReplConfigRequest_ptr req_ptr;
|
||||
Request_ptr rp;
|
||||
uint8_t *buf = NULL;
|
||||
int64_t blen = 0;
|
||||
int rc = 0;
|
||||
|
||||
if (ssl == NULL)
|
||||
return -EINVAL;
|
||||
|
||||
capn_init_malloc(&c);
|
||||
cs = capn_root(&c).seg;
|
||||
|
||||
memset(&rq, 0, sizeof(rq));
|
||||
memset(&req_struct, 0, sizeof(req_struct));
|
||||
|
||||
req_struct.versionTag = version_tag;
|
||||
|
||||
req_ptr = new_ReplConfigRequest(cs);
|
||||
write_ReplConfigRequest(&req_struct, req_ptr);
|
||||
|
||||
rq.opcode = OPCode_replConfig;
|
||||
rq.seq = 0;
|
||||
rq.body_which = Request_body_replconfigrequestmsg;
|
||||
rq.body.replconfigrequestmsg = req_ptr;
|
||||
/* from = NULL (no peerinfo for one-shot SSL fetch) */
|
||||
encode_PeerInfo_ptr(cs, &rq.from, NULL);
|
||||
|
||||
rp = new_Request(cs);
|
||||
write_Request(&rq, rp);
|
||||
capn_setp(capn_root(&c), 0, rp.p);
|
||||
|
||||
blen = capn_size(&c);
|
||||
if (blen <= 0) {
|
||||
capn_free(&c);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
buf = (uint8_t *)malloc((size_t)blen);
|
||||
if (!buf) {
|
||||
capn_free(&c);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
if (capn_write_mem(&c, buf, (size_t)blen, 0) < 0) {
|
||||
free(buf);
|
||||
capn_free(&c);
|
||||
return -EIO;
|
||||
}
|
||||
capn_free(&c);
|
||||
|
||||
/* Wire framing: 8-byte size header then payload (matches netio.c
|
||||
* io_fsm_perform: writes &pkt->sz raw, then pkt->data). */
|
||||
{
|
||||
uint64_t hdr = (uint64_t)blen;
|
||||
int nsent = 0;
|
||||
|
||||
nsent = SSL_write(ssl, &hdr, (int)sizeof(hdr));
|
||||
if (nsent != (int)sizeof(hdr)) {
|
||||
rc = -EIO;
|
||||
goto out;
|
||||
}
|
||||
|
||||
nsent = SSL_write(ssl, buf, (int)blen);
|
||||
if (nsent != (int)blen) {
|
||||
rc = -EIO;
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
out:
|
||||
free(buf);
|
||||
return rc;
|
||||
}
|
||||
|
||||
/* Helper: read exactly `len` bytes from SSL, looping on partial reads. */
|
||||
static int ssl_read_all(SSL *ssl, void *dst, size_t len)
|
||||
{
|
||||
size_t off = 0;
|
||||
while (off < len) {
|
||||
int n = SSL_read(ssl, (char *)dst + off, (int)(len - off));
|
||||
if (n <= 0) {
|
||||
return -EIO;
|
||||
}
|
||||
off += (size_t)n;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* xce_replconfig_reply_ssl_decode: standby reads the primary's
|
||||
* OP_replConfig reply from a raw SSL socket and extracts up_to_date,
|
||||
* version_tag, sha256 and bytes.
|
||||
*
|
||||
* Bypasses xce_decode (which would route sha256/bytes through
|
||||
* decode_Data_ptr → xce_data_t and lose the raw byte content).
|
||||
* Instead, reads the capnp message directly into capn, walks down
|
||||
* Request → RequestReply → ReplConfigReply, and pulls sha256/bytes
|
||||
* via capn_len + capn_getv8 on the raw capn_list8.
|
||||
*
|
||||
* Output buffers (*out_sha256 and *out_bytes) are malloc'd and must
|
||||
* be freed by the caller. Both may be NULL on a fast path
|
||||
* (up_to_date == 1). Caller is responsible for distinguishing.
|
||||
*/
|
||||
int xce_replconfig_reply_ssl_decode(SSL *ssl,
|
||||
int *out_up_to_date,
|
||||
uint64_t *out_tag,
|
||||
uint8_t **out_sha256,
|
||||
uint8_t **out_bytes,
|
||||
size_t *out_len)
|
||||
{
|
||||
struct capn c;
|
||||
Request_ptr rp;
|
||||
struct Request rq;
|
||||
RequestReply_ptr rr_ptr;
|
||||
struct RequestReply rr;
|
||||
ReplConfigReply_ptr reply_ptr;
|
||||
struct ReplConfigReply reply_struct;
|
||||
capn_list8 sha_list;
|
||||
capn_list8 bytes_list;
|
||||
uint64_t hdr = 0;
|
||||
uint8_t *buf = NULL;
|
||||
int rc = 0;
|
||||
|
||||
if (ssl == NULL || out_up_to_date == NULL || out_tag == NULL
|
||||
|| out_sha256 == NULL || out_bytes == NULL || out_len == NULL) {
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
*out_up_to_date = 0;
|
||||
*out_tag = 0;
|
||||
*out_sha256 = NULL;
|
||||
*out_bytes = NULL;
|
||||
*out_len = 0;
|
||||
|
||||
rc = ssl_read_all(ssl, &hdr, sizeof(hdr));
|
||||
if (rc < 0) {
|
||||
return rc;
|
||||
}
|
||||
if (hdr == 0 || hdr > (uint64_t)(64 * 1024 * 1024)) {
|
||||
/* 64 MiB sanity ceiling */
|
||||
return -EMSGSIZE;
|
||||
}
|
||||
|
||||
buf = (uint8_t *)malloc((size_t)hdr);
|
||||
if (!buf) {
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
rc = ssl_read_all(ssl, buf, (size_t)hdr);
|
||||
if (rc < 0) {
|
||||
free(buf);
|
||||
return rc;
|
||||
}
|
||||
|
||||
if (capn_init_mem(&c, buf, (size_t)hdr, 0) < 0) {
|
||||
free(buf);
|
||||
return -EPROTO;
|
||||
}
|
||||
|
||||
rp.p = capn_getp(capn_root(&c), 0, 1);
|
||||
read_Request(&rq, rp);
|
||||
|
||||
if (rq.body_which != Request_body_replymsg) {
|
||||
rc = -EPROTO;
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
rr_ptr = rq.body.replymsg;
|
||||
read_RequestReply(&rr, rr_ptr);
|
||||
|
||||
if (rr.data_which != RequestReply_data_replconfigreplymsg) {
|
||||
rc = -EPROTO;
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
reply_ptr = rr.data.replconfigreplymsg;
|
||||
read_ReplConfigReply(&reply_struct, reply_ptr);
|
||||
|
||||
*out_up_to_date = (int)reply_struct.upToDate;
|
||||
*out_tag = reply_struct.versionTag;
|
||||
|
||||
/* Pull sha256 and bytes via raw capn_list8 access (NOT decode_Data
|
||||
* which would corrupt via xce_data_t). Data_ptr and capn_list8
|
||||
* share {capn_ptr p} layout. */
|
||||
sha_list.p = reply_struct.sha256.p;
|
||||
bytes_list.p = reply_struct.bytes.p;
|
||||
|
||||
if (sha_list.p.type != CAPN_NULL && capn_len(sha_list) > 0) {
|
||||
int slen = capn_len(sha_list);
|
||||
uint8_t *sbuf = (uint8_t *)malloc((size_t)slen);
|
||||
if (!sbuf) {
|
||||
rc = -ENOMEM;
|
||||
goto cleanup;
|
||||
}
|
||||
if (capn_getv8(sha_list, 0, sbuf, slen) != slen) {
|
||||
free(sbuf);
|
||||
rc = -EPROTO;
|
||||
goto cleanup;
|
||||
}
|
||||
*out_sha256 = sbuf;
|
||||
}
|
||||
|
||||
if (bytes_list.p.type != CAPN_NULL && capn_len(bytes_list) > 0) {
|
||||
int blen = capn_len(bytes_list);
|
||||
uint8_t *bbuf = (uint8_t *)malloc((size_t)blen);
|
||||
if (!bbuf) {
|
||||
free(*out_sha256);
|
||||
*out_sha256 = NULL;
|
||||
rc = -ENOMEM;
|
||||
goto cleanup;
|
||||
}
|
||||
if (capn_getv8(bytes_list, 0, bbuf, blen) != blen) {
|
||||
free(bbuf);
|
||||
free(*out_sha256);
|
||||
*out_sha256 = NULL;
|
||||
rc = -EPROTO;
|
||||
goto cleanup;
|
||||
}
|
||||
*out_bytes = bbuf;
|
||||
*out_len = (size_t)blen;
|
||||
}
|
||||
|
||||
cleanup:
|
||||
capn_free(&c);
|
||||
free(buf);
|
||||
return rc;
|
||||
}
|
||||
|
||||
/*
|
||||
* xce_upgrade_config_req_extract: attempt to extract sha256 + bytes
|
||||
* from a decoded OP_upgradeConfig request.
|
||||
*
|
||||
* ARCHITECTURAL FINDING (Task A research):
|
||||
* --------------------------------------------------------------------
|
||||
* The decoded form is unusable for byte extraction. When iomgr receives
|
||||
* an OP_upgradeConfig packet, xce_decode() calls decode_Request →
|
||||
* decode_UpgradeConfigRequest → decode_Data_ptr. decode_Data_ptr
|
||||
* allocates a fresh xce_data_t and walks decode_Data, which treats the
|
||||
* pointer as a discriminated Data union (reading a 16-bit discriminator
|
||||
* at offset 0). But the wire actually carries a List(UInt8) with
|
||||
* datasz=0, so capn_read16 returns 0 (Data_data_schedjobs) and a
|
||||
* zero-filled xce_jobs_data_t is allocated. No raw bytes survive.
|
||||
*
|
||||
* Worse: xce_decode() then calls capn_free() and free_packet(), so the
|
||||
* original capnp segment containing the List(UInt8) bytes is gone by
|
||||
* the time any handler runs. The xce_data_t* fields on the decoded
|
||||
* xce_request_t are non-NULL but contain only the bogus jobs_data_t.
|
||||
*
|
||||
* This function therefore always returns -ENOTSUP. Task D must use
|
||||
* xce_upgrade_config_req_extract_raw() below and arrange for the raw
|
||||
* io_packet_t bytes to reach handle_upgrade_config() before xce_decode
|
||||
* destroys them — e.g. by adding a pre-decode peek for OP_upgradeConfig
|
||||
* in the message-handler dispatch, or by stashing the raw buffer on
|
||||
* xce_request_t for select opcodes.
|
||||
*/
|
||||
int xce_upgrade_config_req_extract(const xce_request_t *req,
|
||||
uint8_t **out_bytes, size_t *out_len,
|
||||
uint8_t **out_sha256)
|
||||
{
|
||||
if (req == NULL || out_bytes == NULL || out_len == NULL
|
||||
|| out_sha256 == NULL) {
|
||||
return -EINVAL;
|
||||
}
|
||||
*out_bytes = NULL;
|
||||
*out_len = 0;
|
||||
*out_sha256 = NULL;
|
||||
return -ENOTSUP;
|
||||
}
|
||||
|
||||
/*
|
||||
* xce_upgrade_config_req_extract_raw: parse OP_upgradeConfig request
|
||||
* bytes from a raw on-wire packet and extract sha256 + config bytes.
|
||||
*
|
||||
* Use this from handle_upgrade_config() once a path is wired to capture
|
||||
* the io_packet_t->data buffer before xce_decode() tears it down (see
|
||||
* the xce_upgrade_config_req_extract() comment for why the decoded
|
||||
* form is unusable).
|
||||
*
|
||||
* Output buffers (*out_bytes, *out_sha256) are malloc'd and owned by
|
||||
* the caller.
|
||||
*/
|
||||
int xce_upgrade_config_req_extract_raw(const uint8_t *pkt_data, size_t pkt_sz,
|
||||
uint8_t **out_bytes, size_t *out_len,
|
||||
uint8_t **out_sha256)
|
||||
{
|
||||
struct capn c;
|
||||
Request_ptr rp;
|
||||
struct Request rq;
|
||||
UpgradeConfigRequest_ptr u_ptr;
|
||||
struct UpgradeConfigRequest u_struct;
|
||||
capn_list8 sha_list;
|
||||
capn_list8 bytes_list;
|
||||
int rc = 0;
|
||||
|
||||
if (pkt_data == NULL || pkt_sz == 0 || out_bytes == NULL
|
||||
|| out_len == NULL || out_sha256 == NULL) {
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
*out_bytes = NULL;
|
||||
*out_len = 0;
|
||||
*out_sha256 = NULL;
|
||||
|
||||
if (capn_init_mem(&c, pkt_data, pkt_sz, 0) < 0) {
|
||||
return -EPROTO;
|
||||
}
|
||||
|
||||
rp.p = capn_getp(capn_root(&c), 0, 1);
|
||||
read_Request(&rq, rp);
|
||||
|
||||
if (rq.body_which != Request_body_upgradeconfigrequestmsg) {
|
||||
rc = -EPROTO;
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
u_ptr = rq.body.upgradeconfigrequestmsg;
|
||||
read_UpgradeConfigRequest(&u_struct, u_ptr);
|
||||
|
||||
sha_list.p = u_struct.sha256.p;
|
||||
bytes_list.p = u_struct.bytes.p;
|
||||
|
||||
if (sha_list.p.type == CAPN_NULL || capn_len(sha_list) <= 0
|
||||
|| bytes_list.p.type == CAPN_NULL || capn_len(bytes_list) <= 0) {
|
||||
rc = -EPROTO;
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
{
|
||||
int slen = capn_len(sha_list);
|
||||
int blen = capn_len(bytes_list);
|
||||
uint8_t *sbuf;
|
||||
uint8_t *bbuf;
|
||||
|
||||
sbuf = (uint8_t *)malloc((size_t)slen);
|
||||
if (!sbuf) {
|
||||
rc = -ENOMEM;
|
||||
goto cleanup;
|
||||
}
|
||||
if (capn_getv8(sha_list, 0, sbuf, slen) != slen) {
|
||||
free(sbuf);
|
||||
rc = -EPROTO;
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
bbuf = (uint8_t *)malloc((size_t)blen);
|
||||
if (!bbuf) {
|
||||
free(sbuf);
|
||||
rc = -ENOMEM;
|
||||
goto cleanup;
|
||||
}
|
||||
if (capn_getv8(bytes_list, 0, bbuf, blen) != blen) {
|
||||
free(sbuf);
|
||||
free(bbuf);
|
||||
rc = -EPROTO;
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
*out_sha256 = sbuf;
|
||||
*out_bytes = bbuf;
|
||||
*out_len = (size_t)blen;
|
||||
}
|
||||
|
||||
cleanup:
|
||||
capn_free(&c);
|
||||
return rc;
|
||||
}
|
||||
|
||||
int xce_nop_req(endpoint_t* ep)
|
||||
{
|
||||
xce_request_t request
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue