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The basic approach it to delegate all sensitive data (master key, secret
ephemeral key, key derivation, ....) and related operations to the device.
As device has low memory, it does not keep itself the values
(except for view/spend keys) but once computed there are encrypted (with AES
are equivalent) and return back to monero-wallet-cli. When they need to be
manipulated by the device, they are decrypted on receive.
Moreover, using the client for storing the value in encrypted form limits
the modification in the client code. Those values are transfered from one
C-structure to another one as previously.
The code modification has been done with the wishes to be open to any
other hardware wallet. To achieve that a C++ class hw::Device has been
introduced. Two initial implementations are provided: the "default", which
remaps all calls to initial Monero code, and the "Ledger", which delegates
all calls to Ledger device.
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An udpate may or may not be available now, but should be soon if not.
This will prevent too many people freaking out.
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b3b2d4d2 options: add testnet option dependencies (whythat)
c5f55bb4 common: implement dynamic option dependencies mechanism (whythat)
05a12ccc options: remove testnet-* options (whythat)
c33cb60e common: implement dependent option descriptor (whythat)
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3607d467 core: add --no-fluffy-blocks, and enable fluffy blocks by default (moneromooo-monero)
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Previously, when blob_size == tx_size_limit, the "m_too_big" property was set
and the transaction was rejected. This should not have been the case.
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e4646379 keccak: fix mdlen bounds sanity checking (moneromooo-monero)
2e3e90ac pass large parameters by const ref, not value (moneromooo-monero)
61defd89 blockchain: sanity check number of precomputed hash of hash blocks (moneromooo-monero)
9af6b2d1 ringct: fix infinite loop in unused h2b function (moneromooo-monero)
8cea8d0c simplewallet: double check a new multisig wallet is multisig (moneromooo-monero)
9b98a6ac threadpool: catch exceptions in dtor, to avoid terminate (moneromooo-monero)
24803ed9 blockchain_export: fix buffer overflow in exporter (moneromooo-monero)
f3f7da62 perf_timer: rewrite to make it clear there is no division by zero (moneromooo-monero)
c6ea3df0 performance_tests: remove add_arg call stray extra param (moneromooo-monero)
fa6b4566 fuzz_tests: fix an uninitialized var in setup (moneromooo-monero)
03887f11 keccak: fix sanity check bounds test (moneromooo-monero)
ad11db91 blockchain_db: initialize m_open in base class ctor (moneromooo-monero)
bece67f9 miner: restore std::cout precision after modification (moneromooo-monero)
1aabd14c db_lmdb: check hard fork info drop succeeded (moneromooo-monero)
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d6a0ae96 blockchain: don't try to use hash check array after it's freed (moneromooo-monero)
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39992134 txpool: Properly bail out when outputs_amount == inputs_amount (Leon Klingele)
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bc61ae69 tx_pool: add a max pool size, settable with --max-txpool-size (moneromooo-monero)
3b4e6b35 txpool: increase unmined tx expiry to three days (moneromooo-monero)
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402c9eef cryptonote_tx_utils: fixed logic bug in get_destination_view_key_pub (stoffu)
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It's freed when we've synced past its end, but we might still
find an old chain somewhere
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Coverity 142951
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Previously, when outputs_amount == inputs_amount, the "m_overspend" property
was set, whereas "m_fee_too_low" would have been the correct property to set.
This is unlikely to ever occur and just something I've noticed while reading
through the code.
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and set v7 height to 1057027 on testnet (one block earlier)
This is to easily dump current nodes since we're going to change
the v7 rules with this.
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42f86624 rpc: expose recent median block size in getinfo (moneromooo-monero)
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ba6d2975 cryptonote_core: add --disable-dns-checkpoints flag (moneromooo-monero)
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deeffaeb blockchain: remove minor floating point usage (moneromooo-monero)
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ae860230 Fix exceptions not finding txpool txes when relaying (moneromooo-monero)
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ae55bacd resumption support for updates using range requests (moneromooo-monero)
fe0fae50 epee: add a get_file_size function (moneromooo-monero)
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ceabc4f9 change the N-1/N multisig second message signer for auth (moneromooo-monero)
55c2845d core_tests: multisig test now tests multiple inputs (moneromooo-monero)
98db7ee4 wallet: factor multisig info parsing (moneromooo-monero)
31a97e76 wallet: use raw encrypted data in multisig import/export RPC (moneromooo-monero)
2fa707d1 wallet: add multisig sign/submit RPC (moneromooo-monero)
e36f5b60 Match surae's recommendation to derive multisig keys (moneromooo-monero)
a36c261d wallet2: fix slow multisig unit tests with subaddress patch (moneromooo-monero)
fa569712 make multisig work with subaddresses (moneromooo-monero)
dffa0dce simplewallet: add export_raw_multisig command (moneromooo-monero)
7f4c220b simplewallet: add multisig to wallet type in wallet_info output (moneromooo-monero)
26529038 wallet: guard against partly initialized multisig wallet (moneromooo-monero)
66e34e85 add multisig core test and factor multisig building blocks (moneromooo-monero)
f4eda44c N-1/N multisig (moneromooo-monero)
cd64c799 multisig address generation RPC (moneromooo-monero)
fff871a4 gen_multisig: generates multisig wallets if participants trust each other (moneromooo-monero)
95a21a79 wallet2: allow empty wallet filename to avoid saving data (moneromooo-monero)
b84b3565 tests: add multisig unit tests (moneromooo-monero)
4c313324 Add N/N multisig tx generation and signing (moneromooo-monero)
6d219a92 wallet: add multisig key generation (moneromooo-monero)
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Thanks to kenshi84 for help getting this work
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Scheme by luigi1111:
Multisig for RingCT on Monero
2 of 2
User A (coordinator):
Spendkey b,B
Viewkey a,A (shared)
User B:
Spendkey c,C
Viewkey a,A (shared)
Public Address: C+B, A
Both have their own watch only wallet via C+B, a
A will coordinate spending process (though B could easily as well, coordinator is more needed for more participants)
A and B watch for incoming outputs
B creates "half" key images for discovered output D:
I2_D = (Hs(aR)+c) * Hp(D)
B also creates 1.5 random keypairs (one scalar and 2 pubkeys; one on base G and one on base Hp(D)) for each output, storing the scalar(k) (linked to D),
and sending the pubkeys with I2_D.
A also creates "half" key images:
I1_D = (Hs(aR)+b) * Hp(D)
Then I_D = I1_D + I2_D
Having I_D allows A to check spent status of course, but more importantly allows A to actually build a transaction prefix (and thus transaction).
A builds the transaction until most of the way through MLSAG_Gen, adding the 2 pubkeys (per input) provided with I2_D
to his own generated ones where they are needed (secret row L, R).
At this point, A has a mostly completed transaction (but with an invalid/incomplete signature). A sends over the tx and includes r,
which allows B (with the recipient's address) to verify the destination and amount (by reconstructing the stealth address and decoding ecdhInfo).
B then finishes the signature by computing ss[secret_index][0] = ss[secret_index][0] + k - cc[secret_index]*c (secret indices need to be passed as well).
B can then broadcast the tx, or send it back to A for broadcasting. Once B has completed the signing (and verified the tx to be valid), he can add the full I_D
to his cache, allowing him to verify spent status as well.
NOTE:
A and B *must* present key A and B to each other with a valid signature proving they know a and b respectively.
Otherwise, trickery like the following becomes possible:
A creates viewkey a,A, spendkey b,B, and sends a,A,B to B.
B creates a fake key C = zG - B. B sends C back to A.
The combined spendkey C+B then equals zG, allowing B to spend funds at any time!
The signature fixes this, because B does not know a c corresponding to C (and thus can't produce a signature).
2 of 3
User A (coordinator)
Shared viewkey a,A
"spendkey" j,J
User B
"spendkey" k,K
User C
"spendkey" m,M
A collects K and M from B and C
B collects J and M from A and C
C collects J and K from A and B
A computes N = nG, n = Hs(jK)
A computes O = oG, o = Hs(jM)
B anc C compute P = pG, p = Hs(kM) || Hs(mK)
B and C can also compute N and O respectively if they wish to be able to coordinate
Address: N+O+P, A
The rest follows as above. The coordinator possesses 2 of 3 needed keys; he can get the other
needed part of the signature/key images from either of the other two.
Alternatively, if secure communication exists between parties:
A gives j to B
B gives k to C
C gives m to A
Address: J+K+M, A
3 of 3
Identical to 2 of 2, except the coordinator must collect the key images from both of the others.
The transaction must also be passed an additional hop: A -> B -> C (or A -> C -> B), who can then broadcast it
or send it back to A.
N-1 of N
Generally the same as 2 of 3, except participants need to be arranged in a ring to pass their keys around
(using either the secure or insecure method).
For example (ignoring viewkey so letters line up):
[4 of 5]
User: spendkey
A: a
B: b
C: c
D: d
E: e
a -> B, b -> C, c -> D, d -> E, e -> A
Order of signing does not matter, it just must reach n-1 users. A "remaining keys" list must be passed around with
the transaction so the signers know if they should use 1 or both keys.
Collecting key image parts becomes a little messy, but basically every wallet sends over both of their parts with a tag for each.
Thia way the coordinating wallet can keep track of which images have been added and which wallet they come from. Reasoning:
1. The key images must be added only once (coordinator will get key images for key a from both A and B, he must add only one to get the proper key actual key image)
2. The coordinator must keep track of which helper pubkeys came from which wallet (discussed in 2 of 2 section). The coordinator
must choose only one set to use, then include his choice in the "remaining keys" list so the other wallets know which of their keys to use.
You can generalize it further to N-2 of N or even M of N, but I'm not sure there's legitimate demand to justify the complexity. It might
also be straightforward enough to support with minimal changes from N-1 format.
You basically just give each user additional keys for each additional "-1" you desire. N-2 would be 3 keys per user, N-3 4 keys, etc.
The process is somewhat cumbersome:
To create a N/N multisig wallet:
- each participant creates a normal wallet
- each participant runs "prepare_multisig", and sends the resulting string to every other participant
- each participant runs "make_multisig N A B C D...", with N being the threshold and A B C D... being the strings received from other participants (the threshold must currently equal N)
As txes are received, participants' wallets will need to synchronize so that those new outputs may be spent:
- each participant runs "export_multisig FILENAME", and sends the FILENAME file to every other participant
- each participant runs "import_multisig A B C D...", with A B C D... being the filenames received from other participants
Then, a transaction may be initiated:
- one of the participants runs "transfer ADDRESS AMOUNT"
- this partly signed transaction will be written to the "multisig_monero_tx" file
- the initiator sends this file to another participant
- that other participant runs "sign_multisig multisig_monero_tx"
- the resulting transaction is written to the "multisig_monero_tx" file again
- if the threshold was not reached, the file must be sent to another participant, until enough have signed
- the last participant to sign runs "submit_multisig multisig_monero_tx" to relay the transaction to the Monero network
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43f5269f Wallets now do not depend on the daemon rpc lib (moneromooo-monero)
bb89ae8b move connection_basic and network_throttle from src/p2p to epee (moneromooo-monero)
4abf25f3 cryptonote_core does not depend on p2p anymore (moneromooo-monero)
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As a followon side effect, this makes a lot of inline code
included only in particular cpp files (and instanciated
when necessary.
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abebe392 rpc: add offline state in info rpc (moneromooo-monero)
7696e849 core: make --offline also disable DNS lookups (moneromooo-monero)
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2b0a32f8 Small cleanup of daemon synchronization output (xmr-eric)
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Add period to second sentence
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43f27c7d core: warn when free disk space is low (moneromooo-monero)
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0f2c2d4c rpc: remove obsolete busy core checks (moneromooo-monero)
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0d9c0db9 Do not build against epee_readline if it was not built (Howard Chu)
178014c9 split off readline code into epee_readline (moneromooo-monero)
a9e14a19 link against readline only for monerod and wallet-wallet-{rpc,cli} (moneromooo-monero)
437421ce wallet: move some scoped_message_writer calls from the libs (moneromooo-monero)
e89994e9 wallet: rejig to avoid prompting in wallet2 (moneromooo-monero)
ec5135e5 move input_line from command_line to simplewallet (moneromooo-monero)
082db75f move cryptonote command line options to cryptonote_core (moneromooo-monero)
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Those have no reason to be in a generic module
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It's nasty, and actually breaks on Solaris, where if.h fails to
build due to:
struct map *if_memmap;
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ec48e8d8 core: do not forbid txes without destination (moneromooo-monero)
523084bc core: don't add empty additional pub keys field to extra (moneromooo-monero)
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00cc1fdd subaddress: remove unneeded scalarmultBase (kenshi84)
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10013e94 Protect node privacy by proper filtering in restricted-mode RPC answers (binaryFate)
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This patch allows to filter out sensitive information for queries that rely on the pool state, when running in restricted mode.
This filtering is only applied to data sent back to RPC queries. Results of inline commands typed locally in the daemon are not affected.
In practice, when running with `--restricted-rpc`:
* get_transaction_pool will list relayed transactions with the fields "last relayed time" and "received time" set to zero.
* get_transaction_pool will not list transaction that have do_not_relay set to true, and will not list key images that are used only for such transactions
* get_transaction_pool_hashes.bin will not list such transaction
* get_transaction_pool_stats will not count such transactions in any of the aggregated values that are computed
The implementation does not make filtering the default, so developers should be mindful of this if they add new RPC functionality.
Fixes #2590.
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Transactions in the txpool are marked when another transaction
is seen double spending one or more of its inputs.
This is then exposed wherever appropriate.
Note that being marked with this "double spend seen" flag does
NOT mean this transaction IS a double spend and will never be
mined: it just means that the network has seen at least another
transaction spending at least one of the same inputs, so care
should be taken to wait for a few confirmations before acting
upon that transaction (ie, mostly of use for merchants wanting
to accept unconfirmed transactions).
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88ebfd64 core_tests: fix for subaddress patch (kenshi84)
e373a203 performance_tests: add master spend pubkey to subaddress hashtable (kenshi84)
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It is safe in those cases, though might return slightly out of date
information if another thread is busy modifying the blockchain,
but it avoids potentially lengthy delays just to get things like
the current blockchain height.
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This was spuriously forbidden in the recent subaddress patch,
which isn't inherently incompatible with these.
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Saves a couple bytes per tx
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3492de01 fix lightwallet and subaddresses conflict (Jaquee)
329f149e remove reference to cryptonote::null_hash (Jaquee)
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22b51e06 db_lmdb: include chain height when failing to find an output key (moneromooo-monero)
5db433b3 blockchain: avoid exceptions in output verification (moneromooo-monero)
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529a6a4a core: guard against a mined block not finding all txes in the pool (moneromooo-monero)
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69ce33f2 core: fix failure to sync when a tx is already in the pool (moneromooo-monero)
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7adceee6 precomputed block hashes are now in blocks of N (currently 256) (moneromooo-monero)
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This can happen if we get a bad tx, so let's not spam the log.
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This can happen for several reasons, but mainly if another block
was received, which took that tx off the pool.
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71c7f8d0 core: fix logging the one time public key on error (moneromooo-monero)
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269a2a01 blockchain: fix off by one getting blocks (moneromooo-monero)
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4e115a3a core: remove out sorting from v7 rules (moneromooo-monero)
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work properly
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309290d1 Source updates are in a source subdirectory (moneromooo-monero)
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and restore random shuffle of outputs
This turned out to have a flaw (sort order depends on output
index), and this doesn't really bring much anyway
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97cdd4c9 core: undo output sorting (moneromooo-monero)
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It looks like it may be buggy
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ba6907f6 core: fix creation of v1 txes (moneromooo-monero)
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7f2f6ee1 protocol: remove hop count on block propagation (moneromooo-monero)
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d2d8a41c Use actual batch size for resize estimates (Howard Chu)
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0aaaca29 tx_pool: set the "invalid input" bit when check_tx_inputs fails (moneromooo-monero)
9236823b simplewallet: print tx rejection reason where it was missing (moneromooo-monero)
3dee3301 core_rpc_server: print tx rejection reason at L0 too (moneromooo-monero)
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28b72b6e tx_pool: pre-init tvc.m_verifivation_failed before processing (moneromooo-monero)
50a629b2 core_tests: catch (impossible in practice) tx extra api failure (moneromooo-monero)
fee15ef1 wallet2: catch failure to parse address (moneromooo-monero)
1399e26d net_peerlist: remove dead code (moneromooo-monero)
50e09698 tx_pool: guard against failure getting tx hash (moneromooo-monero)
54cc209a wallet_rpc_server: catch failure to create directory (moneromooo-monero)
3e55099c wallet_rpc_server: init m_vm to NULL in ctor (moneromooo-monero)
7d0dde5e wallet_args: remove redundant default value for --log-file (moneromooo-monero)
ed4a3350 wallet2: catch failure to save keys file (moneromooo-monero)
44434c8a wallet2_api: check whether dynamic_cast returns NULL (moneromooo-monero)
92f2f687 core: check return value from parse_hexstr_to_binbuff (moneromooo-monero)
5475692e wallet2_api: remove an unused, uninitialized, field (moneromooo-monero)
a7ba3de1 libwallet_api_tests: initialize newblock_triggered on reset (moneromooo-monero)
b2763ace wallet2_api: init error code to "no error" in the ctor (moneromooo-monero)
b5faac53 get_blockchain_top now returns void (moneromooo-monero)
2e44d8f2 wallet_rpc_server: guard against exceptions (moneromooo-monero)
4230876b simplewallet: guard against I/O exceptions (moneromooo-monero)
06c1e057 daemon: initialize decode_as_json in RPC request (moneromooo-monero)
11f71af5 http_base: init size_t in http_request_info ctor (moneromooo-monero)
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e29282d2 build: auto update version info without manually deleting version.h (stoffu)
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6137a0b9 blockchain: reject unsorted ins and outs from v7 (moneromooo-monero)
16afab90 core: sort ins and outs key key image and public key, respectively (moneromooo-monero)
0c36b9f9 common: add apply_permutation file and function (moneromooo-monero)
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CID 175316
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Should be impossible in practice, but easy change
CID 175282
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It was always returning true, and could not be foreseen to
usefully return errors in the future. This silences CID 162652
as well as saves some checking code in a few places.
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rather than in the same directory as the prebuilt versions
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3b8b4be5 tx_pool: drop invalid txes from the pool on startup (moneromooo-monero)
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instead of just failing
This is a workaround for bad tx blobs being inserted in the
pool for unknown reasons
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This shaves a lot of space off binaries
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6d0ca7d1 Tweak concurrency limits (Howard Chu)
510d0d47 Use a threadpool (Howard Chu)
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f761dbae Remove 1.25x multiplier from tx_pool (Nano Akron)
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0299cb77 Fix various oversights/bugs in ZMQ RPC server code (Thomas Winget)
77986023 json serialization for rpc-relevant monero types (Thomas Winget)
5c1e08fe Refactor some things into more composable (smaller) functions (Thomas Winget)
9ac2ad07 DRY refactoring (Thomas Winget)
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This ensures no information is leaked by the ordering
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And optimize import startup:
Remember start_height position during initial count_blocks pass
to avoid having to reread entire file again to arrive at start_height
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It is unused, as it was apparently a future optimization,
and it leaks some information (though since pools publish
thei blocks they find, that amount seems small).
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Instead of constantly creating and destroying threads
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9443eec1 core: guard against exceptions in tx verification worker threads (moneromooo-monero)
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e5238adf update checkpoint hashes (Riccardo Spagni)
d4f56bdf update hardcoded checkpoints (Riccardo Spagni)
ed730511 update checkpoints.dat (Riccardo Spagni)
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dbfef643 tx_pool: catch exceptions in LockedTXN dtor (moneromooo-monero)
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This avoids leaking some small amount of information
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Structured {de-,}serialization methods for (many new) types
which are used for requests or responses in the RPC.
New types include RPC requests and responses, and structs which compose
types within those.
# Conflicts:
# src/cryptonote_core/blockchain.cpp
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This commit refactors some of the rpc-related functions in the
Blockchain class to be more composable. This change was made
in order to make implementing the new zmq rpc easier without
trampling on the old rpc.
New functions:
Blockchain::get_num_mature_outputs
Blockchain::get_random_outputs
Blockchain::get_output_key
Blockchain::get_output_key_mask_unlocked
Blockchain::find_blockchain_supplement (overload)
functions which previously had this functionality inline now call these
functions as necessary.
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This might prevent some calls to terminate when the LockedTXN
dtor is called as part of stack unwinding caused by another
exception in the first place.
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Defaults to off, but fluffy blocks are forced enabled on testnet
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e72e625e tx_pool: wrap tx meta updates in a LockedTXN (moneromooo-monero)
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c867357a cryptonote_protocol: error handling on cleanup_handle_incoming_blocks (moneromooo-monero)
ce901fcb Fix blockchain_import wedge on exception in cleanup_handle_incoming_blocks (moneromooo-monero)
84fa015e core: guard against exceptions in handle_incoming_{block,tx} (moneromooo-monero)
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When one happens, cleanup must be called or the incoming tx
lock will stay locked
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Avoids common depending on blockchain_db, which can cause
link errors.
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1914c999 txpool: update db tx metadata when it changes (moneromooo)
4dbf29bd txpool: add tx size median to the pool stats (moneromooo)
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5807529e blockchain: cap memory size of retrieved blocks (moneromooo-monero)
c1b10381 rpc: decrease memory usage a bit in getblocks.bin (moneromooo-monero)
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c22d22e2 Cleanup test impact of adding safesyncmode() method (Howard Chu)
9a859844 Toggle SAFE syncmode on and off automatically (Howard Chu)
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3dd34a49 Cleanup test impact of moving blockchain_db_types() (Howard Chu)
80344740 More DB support cleanup (Howard Chu)
4c7f8ac0 DB cleanup (Howard Chu)
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It helps keep memory usage down when a wallet refreshes through
a string of large blocks
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ea15e72d tx_pool: fix crash in stats (Howard Chu)
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if tx receive_time == now. supersedes #2322
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If monerod is started with default sync mode, set it to SAFE after
synchronization completes. Set it back to FAST if synchronization
restarts (e.g. because another peer has a longer blockchain).
If monerod is started with an explicit sync mode, none of this
automation takes effect.
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Hide LMDB-specific stuff behind blockchain_db.h. Nobody besides blockchain_db.cpp
should ever be including DB-specific headers any more.
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5a283078 cryptonote_protocol: large block sync size before v4 (moneromooo-monero)
7b747607 cryptonote_protocol: kick idle synchronizing peers (moneromooo-monero)
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827afcb7 protocol: pass blockchain cumulative difficulty when syncing (moneromooo-monero)
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Not used yet.
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c6e200a8 core: add --db-salvage command line flag (moneromooo-monero)
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a1891ebe tests: fix tests build (moneromooo-monero)
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f4f7eeba blockchain: log more info when we reject an orphan (moneromooo-monero)
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d732c73e blockchain: remove a few unused variables (moneromooo-monero)
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5d4ef719 core: speed up output index unique set calculation (moneromooo-monero)
19d7f568 perf_timer: allow profiling more granular than millisecond (moneromooo-monero)
bda8c598 epee: add nanosecond timer and pause/restart profiling macros (moneromooo-monero)
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Use to load the database when the primary meta page is corrupted
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Add get_fork_version and add_ideal_fork_version to core so
cryptonote_protocol does not have to need the Blockchain
class directly, as it's not in its dependencies, and add
those to the fake core classes in tests too.
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We won't even talk to a peer which claims a wrong version
for its top block. This will avoid syncing to known bad
peers in the first place.
Also add IP fails when failing to verify a block.
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61770ec2 change mixin to ring size in user visible places (moneromooo-monero)
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7f7d42f8 core: fix invalid memory access creating tx (moneromooo-monero)
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5d91b26c blockchain: skip checking tx semantics in embedded block hash range (moneromooo-monero)
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158c3ecf core: thread most of handle_incoming_tx (moneromooo-monero)
f57ee382 cryptonote_protocol: retry stale spans early (moneromooo-monero)
90df52e1 cryptonote_protocol: light cleanup (moneromooo-monero)
84e23156 cryptonote_protocol: avoid spurious SYNCHRONIZED OK messages (moneromooo-monero)
5be43fcd cryptonote_protocol_handler: sync speedup (moneromooo-monero)
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4d873046 blockchain: add testnet v6 fork height at 971400 (moneromooo-monero)
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214fd81e some include cleanup (moneromooo-monero)
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5dd722be core: add a message when loading checkpoints at init time (moneromooo-monero)
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14ec6ed8 tx_pool: remove obsolete unused m_config_folder field (moneromooo-monero)
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878205f1 core: fix lock ordering bug at init time (moneromooo-monero)
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d8becf2e blockchain: fix cryptonight buffer leak on exit (moneromooo-monero)
91aa90fc blockchain: ensure all blocks get their longhash precalculated (moneromooo-monero)
ff4bcaed blockchain: pass correct height to get_block_longhash (moneromooo-monero)
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340feede core: randomly shuffle outputs (moneromooo-monero)
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53af9768 blockchain: one off warning when seeing a block with unknown version (moneromooo-monero)
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We want to know what happened when a block is wrongly rejected
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A sort+uniq step was done for every tx in a 200 block chunk,
causing a lot of repeated scanning as the size of the offset
map got larger with every added tx. We now do the step only
once at the end of the loop.
Doing it this way potentially uses more memory, but testing
shows that it's currently only about 2% more.
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This uses DNS, which can take a while, so it's useful to know
this is the culprit when loading pauses
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If the txes are bad, this'll be picked up by the block hash mismatch
since the tx merkle root is part of the block hash.
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If the number of blocks to check was not a multiple of the
number of preparation threads, the last few blocks would
not be included in the threaded long hash calculation.
Those would still get calculated when the block gets added
to the chain, however, so this was only a tiny performance
hit, rather than a security bug.
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They used to be sorted by amount, which was fine before rct,
but is now suboptimal, since amounts are not known anymore.
In particular, it would give a recipient knowledge of whether
change was higher or lower than the amount received.
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This avoids someone adding what amounts to mixin 0 rings in
practice, as there is no other good reason to allow this.
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02d66db4 tx_pool: initialize padding in txpool meta structure (moneromooo-monero)
0722aea3 cryptonote_core: initialize checkpoint flag (moneromooo-monero)
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set_user_options()
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235df7f4 blockchain_db: add a txpool tx getter which returns existence (moneromooo-monero)
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