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emessage.cpp
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emessage.cpp
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// Copyright (c) 2014 The CinniCoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
/*
Notes:
Running with -debug could leave to and from address hashes and public keys in the log.
parameters:
-nosmsg Disable secure messaging (fNoSmsg)
-debugsmsg Show extra debug messages (fDebugSmsg)
-smsgscanchain Scan the block chain for public key addresses on startup
Wallet Locked
A copy of each incoming message is stored in bucket files ending in _wl.dat
wl (wallet locked) bucket files are deleted if they expire, like normal buckets
When the wallet is unlocked all the messages in wl files are scanned.
Address Whitelist
Owned Addresses are stored in smsgAddresses vector
Saved to smsg.ini
Modify options using the smsglocalkeys rpc command or edit the smsg.ini file (with client closed)
*/
#include "emessage.h"
#include <stdint.h>
#include <time.h>
#include <map>
#include <stdexcept>
#include <sstream>
#include <errno.h>
#include <openssl/crypto.h>
#include <openssl/ec.h>
#include <openssl/ecdh.h>
#include <openssl/sha.h>
#include <openssl/aes.h>
#include <openssl/evp.h>
#include <openssl/hmac.h>
#include <boost/lexical_cast.hpp>
#include <boost/algorithm/string/predicate.hpp>
#include "base58.h"
#include "db.h"
#include "init.h" // pwalletMain
#include "lz4/lz4.c"
#include "xxhash/xxhash.h"
#include "xxhash/xxhash.c"
// On 64 bit system ld is 64bits
// set IS_ARCH_64 in makefile
#ifdef IS_ARCH_64
#undef PRI64d
#undef PRI64u
#undef PRI64x
#define PRI64d "ld"
#define PRI64u "lu"
#define PRI64x "lx"
#endif // IS_ARCH_64
// TODO: For buckets older than current, only need to store no. messages and hash in memory
boost::signals2::signal<void (SecInboxMsg& inboxHdr)> NotifySecMsgInboxChanged;
boost::signals2::signal<void (SecOutboxMsg& outboxHdr)> NotifySecMsgOutboxChanged;
boost::signals2::signal<void ()> NotifySecMsgWalletUnlocked;
bool fSecMsgEnabled = false;
std::map<int64_t, SecMsgBucket> smsgBuckets;
std::vector<SecMsgAddress> smsgAddresses;
SecMsgOptions smsgOptions;
uint32_t nPeerIdCounter = 1;
CCriticalSection cs_smsg; // all except inbox, outbox and sendQueue
CCriticalSection cs_smsgInbox;
CCriticalSection cs_smsgOutbox;
CCriticalSection cs_smsgSendQueue;
namespace fs = boost::filesystem;
bool SecMsgCrypter::SetKey(const std::vector<unsigned char>& vchNewKey, unsigned char* chNewIV)
{
// -- for EVP_aes_256_cbc() key must be 256 bit, iv must be 128 bit.
memcpy(&chKey[0], &vchNewKey[0], sizeof(chKey));
memcpy(chIV, chNewIV, sizeof(chIV));
fKeySet = true;
return true;
};
bool SecMsgCrypter::Encrypt(unsigned char* chPlaintext, uint32_t nPlain, std::vector<unsigned char> &vchCiphertext)
{
if (!fKeySet)
return false;
// -- max ciphertext len for a n bytes of plaintext is n + AES_BLOCK_SIZE - 1 bytes
int nLen = nPlain;
int nCLen = nLen + AES_BLOCK_SIZE, nFLen = 0;
vchCiphertext = std::vector<unsigned char> (nCLen);
EVP_CIPHER_CTX ctx;
bool fOk = true;
EVP_CIPHER_CTX_init(&ctx);
if (fOk) fOk = EVP_EncryptInit_ex(&ctx, EVP_aes_256_cbc(), NULL, &chKey[0], &chIV[0]);
if (fOk) fOk = EVP_EncryptUpdate(&ctx, &vchCiphertext[0], &nCLen, chPlaintext, nLen);
if (fOk) fOk = EVP_EncryptFinal_ex(&ctx, (&vchCiphertext[0])+nCLen, &nFLen);
EVP_CIPHER_CTX_cleanup(&ctx);
if (!fOk)
return false;
vchCiphertext.resize(nCLen + nFLen);
return true;
};
bool SecMsgCrypter::Decrypt(unsigned char* chCiphertext, uint32_t nCipher, std::vector<unsigned char>& vchPlaintext)
{
if (!fKeySet)
return false;
// plaintext will always be equal to or lesser than length of ciphertext
int nPLen = nCipher, nFLen = 0;
vchPlaintext.resize(nCipher);
EVP_CIPHER_CTX ctx;
bool fOk = true;
EVP_CIPHER_CTX_init(&ctx);
if (fOk) fOk = EVP_DecryptInit_ex(&ctx, EVP_aes_256_cbc(), NULL, &chKey[0], &chIV[0]);
if (fOk) fOk = EVP_DecryptUpdate(&ctx, &vchPlaintext[0], &nPLen, &chCiphertext[0], nCipher);
if (fOk) fOk = EVP_DecryptFinal_ex(&ctx, (&vchPlaintext[0])+nPLen, &nFLen);
EVP_CIPHER_CTX_cleanup(&ctx);
if (!fOk)
return false;
vchPlaintext.resize(nPLen + nFLen);
return true;
};
void SecMsgBucket::hashBucket()
{
if (fDebugSmsg)
printf("SecMsgBucket::hashBucket()\n");
timeChanged = GetTime();
std::set<SecMsgToken>::iterator it;
void* state = XXH32_init(1);
for (it = setTokens.begin(); it != setTokens.end(); ++it)
{
XXH32_update(state, it->sample, 8);
};
hash = XXH32_digest(state);
if (fDebugSmsg)
printf("Hashed %"PRIszu" messages, hash %u\n", setTokens.size(), hash);
};
bool CSmesgInboxDB::NextSmesg(Dbc* pcursor, unsigned int fFlags, std::vector<unsigned char>& vchKey, SecInboxMsg& smsgInbox)
{
datKey.set_flags(DB_DBT_USERMEM);
datValue.set_flags(DB_DBT_USERMEM);
datKey.set_ulen(vchKeyData.size());
datKey.set_data(&vchKeyData[0]);
datValue.set_ulen(vchValueData.size());
datValue.set_data(&vchValueData[0]);
while (true) // Must loop, as want to return only message keys
{
int ret = pcursor->get(&datKey, &datValue, fFlags);
if (ret == ENOMEM
|| ret == DB_BUFFER_SMALL)
{
if (datKey.get_size() > datKey.get_ulen())
{
vchKeyData.resize(datKey.get_size());
datKey.set_ulen(vchKeyData.size());
datKey.set_data(&vchKeyData[0]);
};
if (datValue.get_size() > datValue.get_ulen())
{
vchValueData.resize(datValue.get_size());
datValue.set_ulen(vchValueData.size());
datValue.set_data(&vchValueData[0]);
};
// -- try once more, when DB_BUFFER_SMALL cursor is not expected to move
ret = pcursor->get(&datKey, &datValue, fFlags);
};
if (ret == DB_NOTFOUND)
return false;
else
if (datKey.get_data() == NULL || datValue.get_data() == NULL || ret != 0)
{
printf("CSmesgInboxDB::NextSmesg(), DB error %d, %s\n", ret, db_strerror(ret));
return false;
};
if (datKey.get_size() != 17)
{
fFlags = DB_NEXT; // don't want to loop forever
continue; // not a message key
}
// must be a better way?
CDataStream ssValue(SER_DISK, CLIENT_VERSION);
ssValue.SetType(SER_DISK);
ssValue.clear();
ssValue.write((char*)datKey.get_data(), datKey.get_size());
ssValue >> vchKey;
//SecOutboxMsg smsgOutbox;
ssValue.clear();
ssValue.write((char*)datValue.get_data(), datValue.get_size());
ssValue >> smsgInbox;
break;
}
return true;
};
bool CSmesgOutboxDB::NextSmesg(Dbc* pcursor, unsigned int fFlags, std::vector<unsigned char>& vchKey, SecOutboxMsg& smsgOutbox)
{
datKey.set_flags(DB_DBT_USERMEM);
datValue.set_flags(DB_DBT_USERMEM);
datKey.set_ulen(vchKeyData.size());
datKey.set_data(&vchKeyData[0]);
datValue.set_ulen(vchValueData.size());
datValue.set_data(&vchValueData[0]);
while (true) // Must loop, as want to return only message keys
{
int ret = pcursor->get(&datKey, &datValue, fFlags);
if (ret == ENOMEM
|| ret == DB_BUFFER_SMALL)
{
if (datKey.get_size() > datKey.get_ulen())
{
vchKeyData.resize(datKey.get_size());
datKey.set_ulen(vchKeyData.size());
datKey.set_data(&vchKeyData[0]);
};
if (datValue.get_size() > datValue.get_ulen())
{
vchValueData.resize(datValue.get_size());
datValue.set_ulen(vchValueData.size());
datValue.set_data(&vchValueData[0]);
};
// try once more, when DB_BUFFER_SMALL cursor is not expected to move
ret = pcursor->get(&datKey, &datValue, fFlags);
};
if (ret == DB_NOTFOUND)
return false;
else
if (datKey.get_data() == NULL || datValue.get_data() == NULL || ret != 0)
{
printf("CSmesgOutboxDB::NextSmesg(), DB error %d, %s\n", ret, db_strerror(ret));
return false;
};
if (datKey.get_size() != 17)
{
fFlags = DB_NEXT; // don't want to loop forever
continue; // not a message key
}
// must be a better way?
CDataStream ssValue(SER_DISK, CLIENT_VERSION);
ssValue.SetType(SER_DISK);
ssValue.clear();
ssValue.write((char*)datKey.get_data(), datKey.get_size());
ssValue >> vchKey;
//SecOutboxMsg smsgOutbox;
ssValue.clear();
ssValue.write((char*)datValue.get_data(), datValue.get_size());
ssValue >> smsgOutbox;
break;
}
return true;
};
bool CSmesgSendQueueDB::NextSmesg(Dbc* pcursor, unsigned int fFlags, std::vector<unsigned char>& vchKey, SecOutboxMsg& smsgOutbox)
{
datKey.set_flags(DB_DBT_USERMEM);
datValue.set_flags(DB_DBT_USERMEM);
datKey.set_ulen(vchKeyData.size());
datKey.set_data(&vchKeyData[0]);
datValue.set_ulen(vchValueData.size());
datValue.set_data(&vchValueData[0]);
while (true) // Must loop, as want to return only message keys
{
int ret = pcursor->get(&datKey, &datValue, fFlags);
if (ret == ENOMEM
|| ret == DB_BUFFER_SMALL)
{
if (datKey.get_size() > datKey.get_ulen())
{
vchKeyData.resize(datKey.get_size());
datKey.set_ulen(vchKeyData.size());
datKey.set_data(&vchKeyData[0]);
};
if (datValue.get_size() > datValue.get_ulen())
{
vchValueData.resize(datValue.get_size());
datValue.set_ulen(vchValueData.size());
datValue.set_data(&vchValueData[0]);
};
// try once more, when DB_BUFFER_SMALL cursor is not expected to move
ret = pcursor->get(&datKey, &datValue, fFlags);
};
if (ret == DB_NOTFOUND)
return false;
else
if (datKey.get_data() == NULL || datValue.get_data() == NULL || ret != 0)
{
printf("CSmesgOutboxDB::NextSmesg(), DB error %d, %s\n", ret, db_strerror(ret));
return false;
};
if (datKey.get_size() != 17)
{
fFlags = DB_NEXT; // don't want to loop forever
continue; // not a message key
}
// must be a better way?
CDataStream ssValue(SER_DISK, CLIENT_VERSION);
ssValue.SetType(SER_DISK);
ssValue.clear();
ssValue.write((char*)datKey.get_data(), datKey.get_size());
ssValue >> vchKey;
//SecOutboxMsg smsgOutbox;
ssValue.clear();
ssValue.write((char*)datValue.get_data(), datValue.get_size());
ssValue >> smsgOutbox;
break;
}
return true;
};
void ThreadSecureMsg(void* parg)
{
// -- bucket management thread
RenameThread("CinniCoin-smsg"); // Make this thread recognisable
uint32_t delay = 0;
//while (!fShutdown)
while (fSecMsgEnabled)
{
// shutdown thread waits 5 seconds, this should be less
Sleep(1000); // milliseconds
if (!fSecMsgEnabled) // check again after sleep
break;
delay++;
if (delay < SMSG_THREAD_DELAY) // check every SMSG_THREAD_DELAY seconds
continue;
delay = 0;
int64_t now = GetTime();
if (fDebugSmsg)
printf("SecureMsgThread %"PRI64d" \n", now);
int64_t cutoffTime = now - SMSG_RETENTION;
{
LOCK(cs_smsg);
std::map<int64_t, SecMsgBucket>::iterator it;
it = smsgBuckets.begin();
while (it != smsgBuckets.end())
{
//if (fDebugSmsg)
// printf("Checking bucket %"PRI64d", size %"PRIszu" \n", it->first, it->second.setTokens.size());
if (it->first < cutoffTime)
{
if (fDebugSmsg)
printf("Removing bucket %"PRI64d" \n", it->first);
std::string fileName = boost::lexical_cast<std::string>(it->first) + "_01.dat";
fs::path fullPath = GetDataDir() / "smsgStore" / fileName;
if (fs::exists(fullPath))
{
try {
fs::remove(fullPath);
} catch (const fs::filesystem_error& ex)
{
printf("Error removing bucket file %s.\n", ex.what());
};
} else
printf("Path %s does not exist \n", fullPath.string().c_str());
// -- look for a wl file, it stores incoming messages when wallet is locked
fileName = boost::lexical_cast<std::string>(it->first) + "_01_wl.dat";
fullPath = GetDataDir() / "smsgStore" / fileName;
if (fs::exists(fullPath))
{
try {
fs::remove(fullPath);
} catch (const fs::filesystem_error& ex)
{
printf("Error removing wallet locked file %s.\n", ex.what());
};
};
smsgBuckets.erase(it++);
} else
{
// -- tick down nLockCount, so will eventually expire if peer never sends data
if (it->second.nLockCount > 0)
{
it->second.nLockCount--;
if (it->second.nLockCount == 0) // lock timed out
{
uint32_t nPeerId = it->second.nLockPeerId;
int64_t ignoreUntil = GetTime() + SMSG_TIME_IGNORE;
if (fDebugSmsg)
printf("Lock on bucket %"PRI64d" for peer %u timed out.\n", it->first, nPeerId);
// -- look through the nodes for the peer that locked this bucket
LOCK(cs_vNodes);
BOOST_FOREACH(CNode* pnode, vNodes)
{
if (pnode->smsgData.nPeerId != nPeerId)
continue;
pnode->smsgData.ignoreUntil = ignoreUntil;
// -- alert peer that they are being ignored
std::vector<unsigned char> vchData;
vchData.resize(8);
memcpy(&vchData[0], &ignoreUntil, 8);
pnode->PushMessage("smsgIgnore", vchData);
if (fDebugSmsg)
printf("This node will ignore peer %u until %"PRI64d".\n", nPeerId, ignoreUntil);
break;
};
it->second.nLockPeerId = 0;
}; // if (it->second.nLockCount == 0)
};
++it;
}; // ! if (it->first < cutoffTime)
};
}; // LOCK(cs_smsg);
};
printf("ThreadSecureMsg exited.\n");
};
void ThreadSecureMsgPow(void* parg)
{
// -- proof of work thread
RenameThread("CinniCoin-smsg-pow"); // Make this thread recognisable
int rv;
std::vector<unsigned char> vchKey;
SecOutboxMsg smsgOutbox;
//while (!fShutdown)
while (fSecMsgEnabled)
{
// sleep at end, then fShutdown is tested on wake
{
LOCK(cs_smsgSendQueue);
// TODO: How to tell if db was opened successfully? For now create db
CSmesgSendQueueDB dbSendQueue("cr+");
// -- fifo
unsigned int fFlags = DB_FIRST;
for (;;)
{
Dbc* pcursor = dbSendQueue.GetAtCursor();
if (!dbSendQueue.NextSmesg(pcursor, fFlags, vchKey, smsgOutbox))
{
pcursor->close();
break;
};
if (fDebugSmsg)
printf("ThreadSecureMsgPow picked up a message to: %s.\n", smsgOutbox.sAddrTo.c_str());
unsigned char* pHeader = &smsgOutbox.vchMessage[0];
unsigned char* pPayload = &smsgOutbox.vchMessage[SMSG_HDR_LEN];
SecureMessage* psmsg = (SecureMessage*) pHeader;
// -- do proof of work
if ((rv = SecureMsgSetHash(pHeader, pPayload, psmsg->nPayload)) != 0)
{
// -- leave message in db, if terminated due to shutdown
pcursor->close();
if (rv == 2)
{
break;
} else
{
printf("SecMsgPow: Could not get proof of work hash, message removed.\n");
dbSendQueue.EraseSmesg(vchKey);
};
continue;
};
// -- add to message store
{
LOCK(cs_smsg);
if (SecureMsgStore(pHeader, pPayload, psmsg->nPayload, true) != 0)
{
printf("SecMsgPow: Could not place message in buckets, message removed.\n");
pcursor->close();
dbSendQueue.EraseSmesg(vchKey);
continue;
};
}
// -- test if message was sent to self
if (SecureMsgScanMessage(pHeader, pPayload, psmsg->nPayload, true) != 0)
{
// message recipient is not this node (or failed)
};
pcursor->close();
dbSendQueue.EraseSmesg(vchKey);
if (fDebugSmsg)
printf("ThreadSecureMsgPow() sent message to: %s.\n", smsgOutbox.sAddrTo.c_str());
//break;
};
}
// shutdown thread waits 5 seconds, this should be less
Sleep(1000); // milliseconds
};
printf("ThreadSecureMsgPow exited.\n");
};
std::string getTimeString(int64_t timestamp, char *buffer, size_t nBuffer)
{
struct tm* dt;
time_t t = timestamp;
dt = localtime(&t);
strftime(buffer, nBuffer, "%Y-%m-%d %H:%M:%S %z", dt); // %Z shows long strings on windows
return std::string(buffer); // Copies the null-terminated character sequence
};
std::string fsReadable(uint64_t nBytes)
{
char buffer[128];
if (nBytes >= 1024ll*1024ll*1024ll*1024ll)
snprintf(buffer, sizeof(buffer), "%.2f TB", nBytes/1024.0/1024.0/1024.0/1024.0);
else
if (nBytes >= 1024*1024*1024)
snprintf(buffer, sizeof(buffer), "%.2f GB", nBytes/1024.0/1024.0/1024.0);
else
if (nBytes >= 1024*1024)
snprintf(buffer, sizeof(buffer), "%.2f MB", nBytes/1024.0/1024.0);
else
if (nBytes >= 1024)
snprintf(buffer, sizeof(buffer), "%.2f KB", nBytes/1024.0);
else
snprintf(buffer, sizeof(buffer), "%"PRI64u" bytes", nBytes);
return std::string(buffer);
};
int SecureMsgBuildBucketSet()
{
/*
Build the bucket set by scanning the files in the smsgStore dir.
smsgBuckets should be empty
*/
if (fDebugSmsg)
printf("SecureMsgBuildBucketSet()\n");
int64_t now = GetTime();
uint32_t nFiles = 0;
uint32_t nMessages = 0;
fs::path pathSmsgDir = GetDataDir() / "smsgStore";
fs::directory_iterator itend;
if (!fs::exists(pathSmsgDir)
|| !fs::is_directory(pathSmsgDir))
{
printf("Message store directory does not exist.\n");
return 0; // not an error
}
for (fs::directory_iterator itd(pathSmsgDir) ; itd != itend ; ++itd)
{
if (!fs::is_regular_file(itd->status()))
continue;
std::string fileType = (*itd).path().extension().string();
if (fileType.compare(".dat") != 0)
continue;
std::string fileName = (*itd).path().filename().string();
if (fDebugSmsg)
printf("Processing file: %s.\n", fileName.c_str());
nFiles++;
// TODO files must be split if > 2GB
// time_noFile.dat
size_t sep = fileName.find_first_of("_");
if (sep == std::string::npos)
continue;
std::string stime = fileName.substr(0, sep);
int64_t fileTime = boost::lexical_cast<int64_t>(stime);
if (fileTime < now - SMSG_RETENTION)
{
printf("Dropping file %s, expired.\n", fileName.c_str());
try {
fs::remove((*itd).path());
} catch (const fs::filesystem_error& ex)
{
printf("Error removing bucket file %s, %s.\n", fileName.c_str(), ex.what());
};
continue;
};
if (boost::algorithm::ends_with(fileName, "_wl.dat"))
{
if (fDebugSmsg)
printf("Skipping wallet locked file: %s.\n", fileName.c_str());
continue;
};
SecureMessage smsg;
std::set<SecMsgToken>& tokenSet = smsgBuckets[fileTime].setTokens;
{
LOCK(cs_smsg);
FILE *fp;
if (!(fp = fopen((*itd).path().string().c_str(), "rb")))
{
printf("Error opening file: %s\n", strerror(errno));
continue;
};
for (;;)
{
long int ofs = ftell(fp);
SecMsgToken token;
token.offset = ofs;
errno = 0;
if (fread(&smsg.hash[0], sizeof(unsigned char), SMSG_HDR_LEN, fp) != (size_t)SMSG_HDR_LEN)
{
if (errno != 0)
{
printf("fread header failed: %s\n", strerror(errno));
} else
{
//printf("End of file.\n");
};
break;
};
token.timestamp = smsg.timestamp;
if (smsg.nPayload < 8)
continue;
if (fread(token.sample, sizeof(unsigned char), 8, fp) != 8)
{
printf("fread data failed: %s\n", strerror(errno));
break;
};
if (fseek(fp, smsg.nPayload-8, SEEK_CUR) != 0)
{
printf("fseek, strerror: %s.\n", strerror(errno));
break;
};
tokenSet.insert(token);
};
fclose(fp);
};
smsgBuckets[fileTime].hashBucket();
nMessages += tokenSet.size();
if (fDebugSmsg)
printf("Bucket %"PRI64d" contains %"PRIszu" messages.\n", fileTime, tokenSet.size());
};
printf("Processed %u files, loaded %"PRIszu" buckets containing %u messages.\n", nFiles, smsgBuckets.size(), nMessages);
return 0;
};
int SecureMsgAddWalletAddresses()
{
if (fDebugSmsg)
printf("SecureMsgAddWalletAddresses()\n");
uint32_t nAdded = 0;
BOOST_FOREACH(const PAIRTYPE(CTxDestination, std::string)& entry, pwalletMain->mapAddressBook)
{
if (!IsMine(*pwalletMain, entry.first))
continue;
CBitcoinAddress coinAddress(entry.first);
if (!coinAddress.IsValid())
continue;
std::string address;
std::string strPublicKey;
address = coinAddress.ToString();
bool fExists = 0;
for (std::vector<SecMsgAddress>::iterator it = smsgAddresses.begin(); it != smsgAddresses.end(); ++it)
{
if (address != it->sAddress)
continue;
fExists = 1;
break;
};
if (fExists)
continue;
bool recvEnabled = 1;
bool recvAnon = 1;
smsgAddresses.push_back(SecMsgAddress(address, recvEnabled, recvAnon));
nAdded++;
};
if (fDebugSmsg)
printf("Added %u addresses to whitelist.\n", nAdded);
return 0;
};
int SecureMsgReadIni()
{
if (!fSecMsgEnabled)
return false;
if (fDebugSmsg)
printf("SecureMsgReadIni()\n");
fs::path fullpath = GetDataDir() / "smsg.ini";
FILE *fp;
errno = 0;
if (!(fp = fopen(fullpath.string().c_str(), "r")))
{
printf("Error opening file: %s\n", strerror(errno));
return 1;
};
char cLine[512];
char *pName, *pValue;
char cAddress[64];
int addrRecv, addrRecvAnon;
while (fgets(cLine, 512, fp))
{
cLine[strcspn(cLine, "\n")] = '\0';
cLine[strcspn(cLine, "\r")] = '\0';
cLine[511] = '\0'; // for safety
// -- check that line contains a name value pair and is not a comment, or section header
if (cLine[0] == '#' || cLine[0] == '[' || strcspn(cLine, "=") < 1)
continue;
if (!(pName = strtok(cLine, "="))
|| !(pValue = strtok(NULL, "=")))
continue;
if (strcmp(pName, "newAddressRecv") == 0)
{
smsgOptions.fNewAddressRecv = (strcmp(pValue, "true") == 0) ? true : false;
} else
if (strcmp(pName, "newAddressAnon") == 0)
{
smsgOptions.fNewAddressAnon = (strcmp(pValue, "true") == 0) ? true : false;
} else
if (strcmp(pName, "key") == 0)
{
int rv = sscanf(pValue, "%64[^|]|%d|%d", cAddress, &addrRecv, &addrRecvAnon);
if (rv == 3)
{
smsgAddresses.push_back(SecMsgAddress(std::string(cAddress), addrRecv, addrRecvAnon));
} else
{
printf("Could not parse key line %s, rv %d.\n", pValue, rv);
}
} else
{
printf("Unknown setting name: '%s'.", pName);
};
};
printf("Loaded %"PRIszu" addresses.\n", smsgAddresses.size());
fclose(fp);
return 0;
};
int SecureMsgWriteIni()
{
if (!fSecMsgEnabled)
return false;
if (fDebugSmsg)
printf("SecureMsgWriteIni()\n");
fs::path fullpath = GetDataDir() / "smsg.ini~";
FILE *fp;
errno = 0;
if (!(fp = fopen(fullpath.string().c_str(), "w")))
{
printf("Error opening file: %s\n", strerror(errno));
return 1;
};
if (fwrite("[Options]\n", sizeof(char), 10, fp) != 10)
{
printf("fwrite error: %s\n", strerror(errno));
fclose(fp);
return false;
};
if (fprintf(fp, "newAddressRecv=%s\n", smsgOptions.fNewAddressRecv ? "true" : "false") < 0
|| fprintf(fp, "newAddressAnon=%s\n", smsgOptions.fNewAddressAnon ? "true" : "false") < 0)
{
printf("fprintf error: %s\n", strerror(errno));
fclose(fp);
return false;
}
if (fwrite("\n[Keys]\n", sizeof(char), 8, fp) != 8)
{
printf("fwrite error: %s\n", strerror(errno));
fclose(fp);
return false;
};
for (std::vector<SecMsgAddress>::iterator it = smsgAddresses.begin(); it != smsgAddresses.end(); ++it)
{
errno = 0;
if (fprintf(fp, "key=%s|%d|%d\n", it->sAddress.c_str(), it->fReceiveEnabled, it->fReceiveAnon) < 0)
{
printf("fprintf error: %s\n", strerror(errno));
continue;
};
};
fclose(fp);
try {
fs::path finalpath = GetDataDir() / "smsg.ini";
fs::rename(fullpath, finalpath);
} catch (const fs::filesystem_error& ex)
{
printf("Error renaming file %s, %s.\n", fullpath.string().c_str(), ex.what());
};
return 0;
};
/** called from AppInit2() in init.cpp */
bool SecureMsgStart(bool fDontStart, bool fScanChain)
{
if (fDontStart)
{
printf("Secure messaging not started.\n");
return false;
};
printf("Secure messaging starting.\n");
fSecMsgEnabled = true;
if (SecureMsgReadIni() != 0)
printf("Failed to read smsg.ini\n");
if (smsgAddresses.size() < 1)
{
printf("No address keys loaded.\n");
if (SecureMsgAddWalletAddresses() != 0)
printf("Failed to load addresses from wallet.\n");
};
if (fScanChain)
{
SecureMsgScanBlockChain();
};
if (SecureMsgBuildBucketSet() != 0)
{
printf("SecureMsg could not load bucket sets, secure messaging disabled.\n");
fSecMsgEnabled = false;
return false;
};
// -- start threads
if (!NewThread(ThreadSecureMsg, NULL)
|| !NewThread(ThreadSecureMsgPow, NULL))
{
printf("SecureMsg could not start threads, secure messaging disabled.\n");
fSecMsgEnabled = false;
return false;
};
return true;
};
/** called from Shutdown() in init.cpp */
bool SecureMsgShutdown()
{
if (!fSecMsgEnabled)
return false;
printf("Stopping secure messaging.\n");