Ejemplo n.º 1
0
static void *CFTestD_ServeReport(void *config_arg)
{
    CFTestD_Config *config = (CFTestD_Config *) config_arg;

    /* Set prefix for all Log()ging: */
    LoggingPrivContext *prior = LoggingPrivGetContext();
    LoggingPrivContext log_ctx = {
        .log_hook = LogAddPrefix,
        .param = config->address
    };
    LoggingPrivSetContext(&log_ctx);

    char *priv_key_path = NULL;
    char *pub_key_path = NULL;
    if (config->key_file != NULL)
    {
        priv_key_path = config->key_file;
        pub_key_path = xstrdup(priv_key_path);
        StringReplace(pub_key_path, strlen(pub_key_path) + 1,
                      "priv", "pub");
    }

    LoadSecretKeys(priv_key_path, pub_key_path, &(config->priv_key), &(config->pub_key));
    free(pub_key_path);

    char *report_file = config->report_file;

    if (report_file != NULL)
    {
        Log(LOG_LEVEL_NOTICE, "Got file argument: '%s'", report_file);
        if (!FileCanOpen(report_file, "r"))
        {
            Log(LOG_LEVEL_ERR,
                "Can't open file '%s' for reading",
                report_file);
            exit(EXIT_FAILURE);
        }

        Writer *contents = FileRead(report_file, SIZE_MAX, NULL);
        if (!contents)
        {
            Log(LOG_LEVEL_ERR, "Error reading report file '%s'", report_file);
            exit(EXIT_FAILURE);
        }

        size_t report_data_len = StringWriterLength(contents);
        config->report_data = StringWriterClose(contents);

        Seq *report = SeqNew(64, NULL);
        size_t report_len = 0;

        StringRef ts_ref = StringGetToken(config->report_data, report_data_len, 0, "\n");
        char *ts = (char *) ts_ref.data;
        *(ts + ts_ref.len) = '\0';
        SeqAppend(report, ts);

        /* start right after the newline after the timestamp header */
        char *position = ts + ts_ref.len + 1;
        char *report_line;
        size_t report_line_len;
        while (CFTestD_GetReportLine(position, &report_line, &report_line_len))
        {
            *(report_line + report_line_len) = '\0';
            SeqAppend(report, report_line);
            report_len += report_line_len;
            position = report_line + report_line_len + 1; /* there's an extra newline after each report_line */
        }

        config->report = report;
        config->report_len = report_len;

        Log(LOG_LEVEL_NOTICE,
            "Read %d bytes for report contents",
            config->report_len);

        if (config->report_len <= 0)
        {
            Log(LOG_LEVEL_ERR, "Report file contained no bytes");
            exit(EXIT_FAILURE);
        }
    }

    Log(LOG_LEVEL_INFO, "Starting server at %s...", config->address);
    fflush(stdout); // for debugging startup

    config->ret = CFTestD_StartServer(config);

    free(config->report_data);

    /* we don't really need to do this here because the process is about the
     * terminate, but it's a good way the cleanup actually works and doesn't
     * cause a segfault or something */
    ServerTLSDeInitialize(&(config->priv_key), &(config->pub_key), &(config->ssl_ctx));

    LoggingPrivSetContext(prior);

    return NULL;
}

static void HandleSignal(int signum)
{
    switch (signum)
    {
    case SIGTERM:
    case SIGINT:
        // flush all logging before process ends.
        fflush(stdout);
        fprintf(stderr, "Terminating...\n");
        TERMINATE = true;
        break;
    default:
        break;
    }
}

/**
 * @param ip_str string representation of an IPv4 address (the usual one, with
 *               4 octets separated by dots)
 * @return a new string representing the incremented IP address (HAS TO BE FREED)
 */
static char *IncrementIPaddress(const char *ip_str)
{
    uint32_t ip = (uint32_t) inet_addr(ip_str);
    if (ip == INADDR_NONE)
    {
        Log(LOG_LEVEL_ERR, "Failed to parse address: '%s'", ip_str);
        return NULL;
    }

    int step = 1;
    char *last_dot = strrchr(ip_str, '.');
    assert(last_dot != NULL);   /* the doc comment says there must be dots! */
    if (StringSafeEqual(last_dot + 1, "255"))
    {
        /* avoid the network address (ending with 0) */
        step = 2;
    }
    else if (StringSafeEqual(last_dot + 1, "254"))
    {
        /* avoid the broadcast address and the network address */
        step = 3;
    }

    uint32_t ip_num = ntohl(ip);
    ip_num += step;
    ip = htonl(ip_num);

    struct in_addr ip_struct;
    ip_struct.s_addr = ip;

    return xstrdup(inet_ntoa(ip_struct));
}
Ejemplo n.º 2
0
void GenericAgentInitialize(EvalContext *ctx, GenericAgentConfig *config)
{
    int force = false;
    struct stat statbuf, sb;
    char vbuff[CF_BUFSIZE];
    char ebuff[CF_EXPANDSIZE];

#ifdef __MINGW32__
    InitializeWindows();
#endif

    DetermineCfenginePort();

    EvalContextClassPutHard(ctx, "any", "source=agent");

    GenericAgentAddEditionClasses(ctx);

    strcpy(VPREFIX, GetConsolePrefix());

/* Define trusted directories */

    {
        const char *workdir = GetWorkDir();
        if (!workdir)
        {
            FatalError(ctx, "Error determining working directory");
        }

        strcpy(CFWORKDIR, workdir);
        MapName(CFWORKDIR);
    }

    OpenLog(LOG_USER);
    SetSyslogFacility(LOG_USER);

    Log(LOG_LEVEL_VERBOSE, "Work directory is %s", CFWORKDIR);

    snprintf(vbuff, CF_BUFSIZE, "%s%cupdate.conf", GetInputDir(), FILE_SEPARATOR);
    MakeParentDirectory(vbuff, force);
    snprintf(vbuff, CF_BUFSIZE, "%s%cbin%ccf-agent -D from_cfexecd", CFWORKDIR, FILE_SEPARATOR, FILE_SEPARATOR);
    MakeParentDirectory(vbuff, force);
    snprintf(vbuff, CF_BUFSIZE, "%s%coutputs%cspooled_reports", CFWORKDIR, FILE_SEPARATOR, FILE_SEPARATOR);
    MakeParentDirectory(vbuff, force);
    snprintf(vbuff, CF_BUFSIZE, "%s%clastseen%cintermittencies", CFWORKDIR, FILE_SEPARATOR, FILE_SEPARATOR);
    MakeParentDirectory(vbuff, force);
    snprintf(vbuff, CF_BUFSIZE, "%s%creports%cvarious", CFWORKDIR, FILE_SEPARATOR, FILE_SEPARATOR);
    MakeParentDirectory(vbuff, force);

    snprintf(vbuff, CF_BUFSIZE, "%s", GetInputDir());

    if (stat(vbuff, &sb) == -1)
    {
        FatalError(ctx, " No access to WORKSPACE/inputs dir");
    }
    else
    {
        chmod(vbuff, sb.st_mode | 0700);
    }

    snprintf(vbuff, CF_BUFSIZE, "%s%coutputs", CFWORKDIR, FILE_SEPARATOR);

    if (stat(vbuff, &sb) == -1)
    {
        FatalError(ctx, " No access to WORKSPACE/outputs dir");
    }
    else
    {
        chmod(vbuff, sb.st_mode | 0700);
    }

    snprintf(ebuff, sizeof(ebuff), "%s%cstate%ccf_procs",
             CFWORKDIR, FILE_SEPARATOR, FILE_SEPARATOR);
    MakeParentDirectory(ebuff, force);

    if (stat(ebuff, &statbuf) == -1)
    {
        CreateEmptyFile(ebuff);
    }

    snprintf(ebuff, sizeof(ebuff), "%s%cstate%ccf_rootprocs",
             CFWORKDIR, FILE_SEPARATOR, FILE_SEPARATOR);

    if (stat(ebuff, &statbuf) == -1)
    {
        CreateEmptyFile(ebuff);
    }

    snprintf(ebuff, sizeof(ebuff), "%s%cstate%ccf_otherprocs",
             CFWORKDIR, FILE_SEPARATOR, FILE_SEPARATOR);

    if (stat(ebuff, &statbuf) == -1)
    {
        CreateEmptyFile(ebuff);
    }

    snprintf(ebuff, sizeof(ebuff), "%s%cstate%cprevious_state%c",
             CFWORKDIR, FILE_SEPARATOR, FILE_SEPARATOR, FILE_SEPARATOR);
    MakeParentDirectory(ebuff, force);

    snprintf(ebuff, sizeof(ebuff), "%s%cstate%cdiff%c",
             CFWORKDIR, FILE_SEPARATOR, FILE_SEPARATOR, FILE_SEPARATOR);
    MakeParentDirectory(ebuff, force);

    snprintf(ebuff, sizeof(ebuff), "%s%cstate%cuntracked%c",
            CFWORKDIR, FILE_SEPARATOR, FILE_SEPARATOR, FILE_SEPARATOR);
    MakeParentDirectory(ebuff, force);

    OpenNetwork();
    CryptoInitialize();

    CheckWorkingDirectories(ctx);

    /* Initialize keys and networking. cf-key, doesn't need keys. In fact it
       must function properly even without them, so that it generates them! */
    if (config->agent_type != AGENT_TYPE_KEYGEN)
    {
        LoadSecretKeys();
        char *bootstrapped_policy_server = ReadPolicyServerFile(CFWORKDIR);
        PolicyHubUpdateKeys(bootstrapped_policy_server);
        free(bootstrapped_policy_server);
        cfnet_init();
    }

    size_t cwd_size = PATH_MAX;
    while (true)
    {
        char cwd[cwd_size];
        if (!getcwd(cwd, cwd_size))
        {
            if (errno == ERANGE)
            {
                cwd_size *= 2;
                continue;
            }
            Log(LOG_LEVEL_WARNING, "Could not determine current directory. (getcwd: '%s')", GetErrorStr());
            break;
        }
        EvalContextSetLaunchDirectory(ctx, cwd);
        break;
    }

    if (!MINUSF)
    {
        GenericAgentConfigSetInputFile(config, GetInputDir(), "promises.cf");
    }

    VIFELAPSED = 1;
    VEXPIREAFTER = 1;

    setlinebuf(stdout);

    if (config->agent_specific.agent.bootstrap_policy_server)
    {
        snprintf(vbuff, CF_BUFSIZE, "%s%cfailsafe.cf", GetInputDir(), FILE_SEPARATOR);

        if (stat(vbuff, &statbuf) == -1)
        {
            GenericAgentConfigSetInputFile(config, GetInputDir(), "failsafe.cf");
        }
        else
        {
            GenericAgentConfigSetInputFile(config, GetInputDir(), vbuff);
        }
    }
}
Ejemplo n.º 3
0
void GenericAgentInitialize(EvalContext *ctx, GenericAgentConfig *config)
{
    int force = false;
    struct stat statbuf, sb;
    char vbuff[CF_BUFSIZE];
    char ebuff[CF_EXPANDSIZE];

    SHORT_CFENGINEPORT = htons((unsigned short) 5308);
    snprintf(STR_CFENGINEPORT, 15, "5308");

    EvalContextHeapAddHard(ctx, "any");

    strcpy(VPREFIX, GetConsolePrefix());

/* Define trusted directories */

    {
        const char *workdir = GetWorkDir();
        if (!workdir)
        {
            FatalError(ctx, "Error determining working directory");
        }

        strcpy(CFWORKDIR, workdir);
        MapName(CFWORKDIR);
    }

/* On windows, use 'binary mode' as default for files */

#ifdef __MINGW32__
    _fmode = _O_BINARY;
#endif

    OpenLog(LOG_USER);
    SetSyslogFacility(LOG_USER);

    if (!LOOKUP)                /* cf-know should not do this in lookup mode */
    {
        Log(LOG_LEVEL_VERBOSE, "Work directory is %s", CFWORKDIR);

        snprintf(vbuff, CF_BUFSIZE, "%s%cinputs%cupdate.conf", CFWORKDIR, FILE_SEPARATOR, FILE_SEPARATOR);
        MakeParentDirectory(vbuff, force);
        snprintf(vbuff, CF_BUFSIZE, "%s%cbin%ccf-agent -D from_cfexecd", CFWORKDIR, FILE_SEPARATOR, FILE_SEPARATOR);
        MakeParentDirectory(vbuff, force);
        snprintf(vbuff, CF_BUFSIZE, "%s%coutputs%cspooled_reports", CFWORKDIR, FILE_SEPARATOR, FILE_SEPARATOR);
        MakeParentDirectory(vbuff, force);
        snprintf(vbuff, CF_BUFSIZE, "%s%clastseen%cintermittencies", CFWORKDIR, FILE_SEPARATOR, FILE_SEPARATOR);
        MakeParentDirectory(vbuff, force);
        snprintf(vbuff, CF_BUFSIZE, "%s%creports%cvarious", CFWORKDIR, FILE_SEPARATOR, FILE_SEPARATOR);
        MakeParentDirectory(vbuff, force);

        snprintf(vbuff, CF_BUFSIZE, "%s%cinputs", CFWORKDIR, FILE_SEPARATOR);

        if (stat(vbuff, &sb) == -1)
        {
            FatalError(ctx, " No access to WORKSPACE/inputs dir");
        }
        else
        {
            chmod(vbuff, sb.st_mode | 0700);
        }

        snprintf(vbuff, CF_BUFSIZE, "%s%coutputs", CFWORKDIR, FILE_SEPARATOR);

        if (stat(vbuff, &sb) == -1)
        {
            FatalError(ctx, " No access to WORKSPACE/outputs dir");
        }
        else
        {
            chmod(vbuff, sb.st_mode | 0700);
        }

        sprintf(ebuff, "%s%cstate%ccf_procs", CFWORKDIR, FILE_SEPARATOR, FILE_SEPARATOR);
        MakeParentDirectory(ebuff, force);

        if (stat(ebuff, &statbuf) == -1)
        {
            CreateEmptyFile(ebuff);
        }

        sprintf(ebuff, "%s%cstate%ccf_rootprocs", CFWORKDIR, FILE_SEPARATOR, FILE_SEPARATOR);

        if (stat(ebuff, &statbuf) == -1)
        {
            CreateEmptyFile(ebuff);
        }

        sprintf(ebuff, "%s%cstate%ccf_otherprocs", CFWORKDIR, FILE_SEPARATOR, FILE_SEPARATOR);

        if (stat(ebuff, &statbuf) == -1)
        {
            CreateEmptyFile(ebuff);
        }
    }

    OpenNetwork();
    CryptoInitialize();

    if (!LOOKUP)
    {
        CheckWorkingDirectories(ctx);
    }

    const char *bootstrapped_policy_server = ReadPolicyServerFile(CFWORKDIR);

    /* Initialize keys and networking. cf-key, doesn't need keys. In fact it
       must function properly even without them, so that it generates them! */
    if (config->agent_type != AGENT_TYPE_KEYGEN)
    {
        LoadSecretKeys(bootstrapped_policy_server);
        cfnet_init();
    }

    if (!MINUSF)
    {
        GenericAgentConfigSetInputFile(config, GetWorkDir(), "promises.cf");
    }

    DetermineCfenginePort();

    VIFELAPSED = 1;
    VEXPIREAFTER = 1;

    setlinebuf(stdout);

    if (config->agent_specific.agent.bootstrap_policy_server)
    {
        snprintf(vbuff, CF_BUFSIZE, "%s%cinputs%cfailsafe.cf", CFWORKDIR, FILE_SEPARATOR, FILE_SEPARATOR);

#ifndef HAVE_ENTERPRISE
        if (stat(vbuff, &statbuf) == -1)
        {
            GenericAgentConfigSetInputFile(config, GetWorkDir(), "failsafe.cf");
        }
        else
#endif
        {
            GenericAgentConfigSetInputFile(config, GetWorkDir(), vbuff);
        }
    }
}
Ejemplo n.º 4
0
int AuthenticateAgent(AgentConnection *conn, bool trust_key)
{
    char sendbuffer[CF_EXPANDSIZE], in[CF_BUFSIZE], *out, *decrypted_cchall;
    BIGNUM *nonce_challenge, *bn = NULL;
    unsigned char digest[EVP_MAX_MD_SIZE];
    int encrypted_len, nonce_len = 0, len, session_size;
    bool need_to_implicitly_trust_server;
    char enterprise_field = 'c';
    RSA *server_pubkey = NULL;

    if ((PUBKEY == NULL) || (PRIVKEY == NULL))
    {
        /* Try once more to load the keys, maybe the system is converging. */
        LoadSecretKeys();
        if ((PUBKEY == NULL) || (PRIVKEY == NULL))
        {
            char *pubkeyfile = PublicKeyFile(GetWorkDir());
            Log(LOG_LEVEL_ERR, "No public/private key pair found at: %s", pubkeyfile);
            free(pubkeyfile);
            return false;
        }
    }

    enterprise_field = CfEnterpriseOptions();
    session_size = CfSessionKeySize(enterprise_field);

/* Generate a random challenge to authenticate the server */

    nonce_challenge = BN_new();
    if (nonce_challenge == NULL)
    {
        Log(LOG_LEVEL_ERR, "Cannot allocate BIGNUM structure for server challenge");
        return false;
    }

    BN_rand(nonce_challenge, CF_NONCELEN, 0, 0);
    nonce_len = BN_bn2mpi(nonce_challenge, in);

    if (FIPS_MODE)
    {
        HashString(in, nonce_len, digest, CF_DEFAULT_DIGEST);
    }
    else
    {
        HashString(in, nonce_len, digest, HASH_METHOD_MD5);
    }

/* We assume that the server bound to the remote socket is the official one i.e. = root's */

    /* Ask the server to send us the public key if we don't have it. */
    if ((server_pubkey = HavePublicKeyByIP(conn->username, conn->remoteip)))
    {
        need_to_implicitly_trust_server = false;
        encrypted_len = RSA_size(server_pubkey);
    }
    else
    {
        need_to_implicitly_trust_server = true;
        encrypted_len = nonce_len;
    }

// Server pubkey is what we want to has as a unique ID

    snprintf(sendbuffer, sizeof(sendbuffer), "SAUTH %c %d %d %c",
             need_to_implicitly_trust_server ? 'n': 'y',
             encrypted_len, nonce_len, enterprise_field);

    out = xmalloc(encrypted_len);

    if (server_pubkey != NULL)
    {
        if (RSA_public_encrypt(nonce_len, in, out, server_pubkey, RSA_PKCS1_PADDING) <= 0)
        {
            Log(LOG_LEVEL_ERR,
                "Public encryption failed. (RSA_public_encrypt: %s)",
            CryptoLastErrorString());
            free(out);
            RSA_free(server_pubkey);
            return false;
        }

        memcpy(sendbuffer + CF_RSA_PROTO_OFFSET, out, encrypted_len);
    }
    else
    {
        memcpy(sendbuffer + CF_RSA_PROTO_OFFSET, in, nonce_len);
    }

/* proposition C1 - Send challenge / nonce */

    SendTransaction(conn->conn_info, sendbuffer, CF_RSA_PROTO_OFFSET + encrypted_len, CF_DONE);

    BN_free(bn);
    BN_free(nonce_challenge);
    free(out);

/*Send the public key - we don't know if server has it */
/* proposition C2 */

    memset(sendbuffer, 0, CF_EXPANDSIZE);
    len = BN_bn2mpi(PUBKEY->n, sendbuffer);
    SendTransaction(conn->conn_info, sendbuffer, len, CF_DONE);        /* No need to encrypt the public key ... */

/* proposition C3 */
    memset(sendbuffer, 0, CF_EXPANDSIZE);
    len = BN_bn2mpi(PUBKEY->e, sendbuffer);
    SendTransaction(conn->conn_info, sendbuffer, len, CF_DONE);

/* check reply about public key - server can break conn_info here */

/* proposition S1 */
    memset(in, 0, CF_BUFSIZE);

    if (ReceiveTransaction(conn->conn_info, in, NULL) == -1)
    {
        Log(LOG_LEVEL_ERR, "Protocol transaction broken off (1). (ReceiveTransaction: %s)", GetErrorStr());
        RSA_free(server_pubkey);
        return false;
    }

    if (BadProtoReply(in))
    {
        Log(LOG_LEVEL_ERR, "Bad protocol reply: %s", in);
        RSA_free(server_pubkey);
        return false;
    }

/* Get challenge response - should be CF_DEFAULT_DIGEST of challenge */

/* proposition S2 */
    memset(in, 0, CF_BUFSIZE);

    if (ReceiveTransaction(conn->conn_info, in, NULL) == -1)
    {
        Log(LOG_LEVEL_ERR, "Protocol transaction broken off (2). (ReceiveTransaction: %s)", GetErrorStr());
        RSA_free(server_pubkey);
        return false;
    }

    /* Check if challenge reply was correct */
    if ((HashesMatch(digest, in, CF_DEFAULT_DIGEST)) ||
        (HashesMatch(digest, in, HASH_METHOD_MD5)))  // Legacy
    {
        if (need_to_implicitly_trust_server == false)
        {
            /* The IP was found in lastseen. */
            Log(LOG_LEVEL_VERBOSE,
                ".....................[.h.a.i.l.].................................");
            Log(LOG_LEVEL_VERBOSE,
                "Strong authentication of server '%s' connection confirmed",
                conn->this_server);
        }
        else                                /* IP was not found in lastseen */
        {
            if (trust_key)
            {
                Log(LOG_LEVEL_VERBOSE,
                    "Trusting server identity, promise to accept key from '%s' = '%s'",
                    conn->this_server, conn->remoteip);
            }
            else
            {
                Log(LOG_LEVEL_ERR,
                    "Not authorized to trust public key of server '%s' (trustkey = false)",
                    conn->this_server);
                RSA_free(server_pubkey);
                return false;
            }
        }
    }
    else
    {
        Log(LOG_LEVEL_ERR, "Challenge response from server '%s/%s' was incorrect", conn->this_server,
             conn->remoteip);
        RSA_free(server_pubkey);
        return false;
    }

/* Receive counter challenge from server */

/* proposition S3 */
    memset(in, 0, CF_BUFSIZE);
    encrypted_len = ReceiveTransaction(conn->conn_info, in, NULL);

    if (encrypted_len <= 0)
    {
        Log(LOG_LEVEL_ERR, "Protocol transaction sent illegal cipher length");
        RSA_free(server_pubkey);
        return false;
    }

    decrypted_cchall = xmalloc(encrypted_len);

    if (RSA_private_decrypt(encrypted_len, in, decrypted_cchall, PRIVKEY, RSA_PKCS1_PADDING) <= 0)
    {
        Log(LOG_LEVEL_ERR,
            "Private decrypt failed, abandoning. (RSA_private_decrypt: %s)",
            CryptoLastErrorString());
        RSA_free(server_pubkey);
        return false;
    }

/* proposition C4 */
    if (FIPS_MODE)
    {
        HashString(decrypted_cchall, nonce_len, digest, CF_DEFAULT_DIGEST);
    }
    else
    {
        HashString(decrypted_cchall, nonce_len, digest, HASH_METHOD_MD5);
    }

    if (FIPS_MODE)
    {
        SendTransaction(conn->conn_info, digest, CF_DEFAULT_DIGEST_LEN, CF_DONE);
    }
    else
    {
        SendTransaction(conn->conn_info, digest, CF_MD5_LEN, CF_DONE);
    }

    free(decrypted_cchall);

/* If we don't have the server's public key, it will be sent */

    if (server_pubkey == NULL)
    {
        RSA *newkey = RSA_new();

        Log(LOG_LEVEL_VERBOSE, "Collecting public key from server!");

        /* proposition S4 - conditional */
        if ((len = ReceiveTransaction(conn->conn_info, in, NULL)) <= 0)
        {
            Log(LOG_LEVEL_ERR, "Protocol error in RSA authentation from IP '%s'", conn->this_server);
            return false;
        }

        if ((newkey->n = BN_mpi2bn(in, len, NULL)) == NULL)
        {
            Log(LOG_LEVEL_ERR,
                "Private key decrypt failed. (BN_mpi2bn: %s)",
                CryptoLastErrorString());
            RSA_free(newkey);
            return false;
        }

        /* proposition S5 - conditional */

        if ((len = ReceiveTransaction(conn->conn_info, in, NULL)) <= 0)
        {
            Log(LOG_LEVEL_INFO, "Protocol error in RSA authentation from IP '%s'",
                 conn->this_server);
            RSA_free(newkey);
            return false;
        }

        if ((newkey->e = BN_mpi2bn(in, len, NULL)) == NULL)
        {
            Log(LOG_LEVEL_ERR,
                "Public key decrypt failed. (BN_mpi2bn: %s)",
                CryptoLastErrorString());
            RSA_free(newkey);
            return false;
        }

        server_pubkey = RSAPublicKey_dup(newkey);
        RSA_free(newkey);
    }
    assert(server_pubkey != NULL);

/* proposition C5 */

    if (!SetSessionKey(conn))
    {
        Log(LOG_LEVEL_ERR, "Unable to set session key");
        return false;
    }

    if (conn->session_key == NULL)
    {
        Log(LOG_LEVEL_ERR, "A random session key could not be established");
        RSA_free(server_pubkey);
        return false;
    }

    encrypted_len = RSA_size(server_pubkey);

    out = xmalloc(encrypted_len);

    if (RSA_public_encrypt(session_size, conn->session_key, out, server_pubkey, RSA_PKCS1_PADDING) <= 0)
    {
        Log(LOG_LEVEL_ERR,
            "Public encryption failed. (RSA_public_encrypt: %s)",
            CryptoLastErrorString());
        free(out);
        RSA_free(server_pubkey);
        return false;
    }

    SendTransaction(conn->conn_info, out, encrypted_len, CF_DONE);

    Key *key = KeyNew(server_pubkey, CF_DEFAULT_DIGEST);
    conn->conn_info->remote_key = key;

    Log(LOG_LEVEL_VERBOSE, "Public key identity of host '%s' is: %s",
        conn->remoteip, KeyPrintableHash(conn->conn_info->remote_key));

    SavePublicKey(conn->username, KeyPrintableHash(conn->conn_info->remote_key), server_pubkey);

    unsigned int length = 0;
    LastSaw(conn->remoteip, KeyBinaryHash(conn->conn_info->remote_key, &length), LAST_SEEN_ROLE_CONNECT);

    free(out);

    return true;
}
Ejemplo n.º 5
0
void InitializeGA(int argc,char *argv[])

{
  int seed,force = false;
  struct stat statbuf,sb;
  unsigned char s[16];
  char vbuff[CF_BUFSIZE];
  char ebuff[CF_EXPANDSIZE];

SHORT_CFENGINEPORT =  htons((unsigned short)5308);
snprintf(STR_CFENGINEPORT,15,"5308");

NewClass("any");

#if defined HAVE_CONSTELLATION
NewClass("constellation_edition");
#elif defined HAVE_NOVA
NewClass("nova_edition");
#else
NewClass("community_edition");
#endif

strcpy(VPREFIX,GetConsolePrefix());

if (VERBOSE)
   {
   NewClass("verbose_mode");
   }

if (INFORM)
   {
   NewClass("inform_mode");
   }

if (DEBUG)
   {
   NewClass("debug_mode");
   }

CfOut(cf_verbose,"","Cfengine - autonomous configuration engine - commence self-diagnostic prelude\n");
CfOut(cf_verbose,"","------------------------------------------------------------------------\n");

/* Define trusted directories */

#ifdef MINGW
if(NovaWin_GetProgDir(CFWORKDIR, CF_BUFSIZE - sizeof("Cfengine")))
  {
  strcat(CFWORKDIR, "\\Cfengine");
  }
else
  {
  CfOut(cf_error, "", "!! Could not get CFWORKDIR from Windows environment variable, falling back to compile time dir (%s)", WORKDIR);
  strcpy(CFWORKDIR,WORKDIR);
  }
Debug("Setting CFWORKDIR=%s\n", CFWORKDIR);
#elif defined(CFCYG)
strcpy(CFWORKDIR,WORKDIR);
MapName(CFWORKDIR);
#else
if (getuid() > 0)
   {
   strncpy(CFWORKDIR,GetHome(getuid()),CF_BUFSIZE-10);
   strcat(CFWORKDIR,"/.cfagent");

   if (strlen(CFWORKDIR) > CF_BUFSIZE/2)
      {
      FatalError("Suspicious looking home directory. The path is too long and will lead to problems.");
      }
   }
else
   {
   strcpy(CFWORKDIR,WORKDIR);
   }
#endif

/* On windows, use 'binary mode' as default for files */

#ifdef MINGW
_fmode = _O_BINARY;
#endif

strcpy(SYSLOGHOST,"localhost");
SYSLOGPORT = htons(514);

Cf3OpenLog(LOG_USER);

if (!LOOKUP) /* cf-know should not do this in lookup mode */
   {
   CfOut(cf_verbose,"","Work directory is %s\n",CFWORKDIR);

   snprintf(HASHDB,CF_BUFSIZE-1,"%s%c%s",CFWORKDIR,FILE_SEPARATOR,CF_CHKDB);

   snprintf(vbuff,CF_BUFSIZE,"%s%cinputs%cupdate.conf",CFWORKDIR,FILE_SEPARATOR,FILE_SEPARATOR);
   MakeParentDirectory(vbuff,force);
   snprintf(vbuff,CF_BUFSIZE,"%s%cbin%ccf-agent -D from_cfexecd",CFWORKDIR,FILE_SEPARATOR,FILE_SEPARATOR);
   MakeParentDirectory(vbuff,force);
   snprintf(vbuff,CF_BUFSIZE,"%s%coutputs%cspooled_reports",CFWORKDIR,FILE_SEPARATOR,FILE_SEPARATOR);
   MakeParentDirectory(vbuff,force);
   snprintf(vbuff,CF_BUFSIZE,"%s%clastseen%cintermittencies",CFWORKDIR,FILE_SEPARATOR,FILE_SEPARATOR);
   MakeParentDirectory(vbuff,force);
   snprintf(vbuff,CF_BUFSIZE,"%s%creports%cvarious",CFWORKDIR,FILE_SEPARATOR,FILE_SEPARATOR);
   MakeParentDirectory(vbuff,force);

   snprintf(vbuff,CF_BUFSIZE,"%s%cinputs",CFWORKDIR,FILE_SEPARATOR);

   if (cfstat(vbuff,&sb) == -1)
      {
      FatalError(" !!! No access to WORKSPACE/inputs dir");
      }
   else
      {
      cf_chmod(vbuff,sb.st_mode | 0700);
      }

   snprintf(vbuff,CF_BUFSIZE,"%s%coutputs",CFWORKDIR,FILE_SEPARATOR);

   if (cfstat(vbuff,&sb) == -1)
      {
      FatalError(" !!! No access to WORKSPACE/outputs dir");
      }
   else
      {
      cf_chmod(vbuff,sb.st_mode | 0700);
      }

   sprintf(ebuff,"%s%cstate%ccf_procs",CFWORKDIR,FILE_SEPARATOR,FILE_SEPARATOR);
   MakeParentDirectory(ebuff,force);

   if (cfstat(ebuff,&statbuf) == -1)
      {
      CreateEmptyFile(ebuff);
      }

   sprintf(ebuff,"%s%cstate%ccf_rootprocs",CFWORKDIR,FILE_SEPARATOR,FILE_SEPARATOR);

   if (cfstat(ebuff,&statbuf) == -1)
      {
      CreateEmptyFile(ebuff);
      }

   sprintf(ebuff,"%s%cstate%ccf_otherprocs",CFWORKDIR,FILE_SEPARATOR,FILE_SEPARATOR);

   if (cfstat(ebuff,&statbuf) == -1)
      {
      CreateEmptyFile(ebuff);
      }
   }

OpenNetwork();

/* Init crypto stuff */

OpenSSL_add_all_algorithms();
OpenSSL_add_all_digests();
ERR_load_crypto_strings();

if(!LOOKUP)
  {
  CheckWorkingDirectories();
  }

RandomSeed();

RAND_bytes(s,16);
s[15] = '\0';
seed = ElfHash(s);
srand48((long)seed);

LoadSecretKeys();

/* CheckOpts(argc,argv); - MacOS can't handle this back reference */

if (!MINUSF)
   {
   snprintf(VINPUTFILE,CF_BUFSIZE-1,"promises.cf");
   }

AUDITDBP = NULL;

DetermineCfenginePort();

VIFELAPSED = 1;
VEXPIREAFTER = 1;

setlinebuf(stdout);

if (BOOTSTRAP)
   {
   snprintf(vbuff,CF_BUFSIZE,"%s%cinputs%cfailsafe.cf",CFWORKDIR,FILE_SEPARATOR,FILE_SEPARATOR);

   if (!IsEnterprise() && cfstat(vbuff,&statbuf) == -1)
      {
      snprintf(VINPUTFILE,CF_BUFSIZE-1,".%cfailsafe.cf",FILE_SEPARATOR);
      }
   else
      {
      strncpy(VINPUTFILE,vbuff,CF_BUFSIZE-1);
      }
   }
}
Ejemplo n.º 6
0
/**
 * @warning Make sure you've called CryptoInitialize() first!
 */
bool TLSClientInitialize()
{
    int ret;
    static bool is_initialised = false;

    if (is_initialised)
    {
        return true;
    }

    if (!TLSGenericInitialize())
    {
        return false;
    }

    SSLCLIENTCONTEXT = SSL_CTX_new(SSLv23_client_method());
    if (SSLCLIENTCONTEXT == NULL)
    {
        Log(LOG_LEVEL_ERR, "SSL_CTX_new: %s",
            ERR_reason_error_string(ERR_get_error()));
        goto err1;
    }

    TLSSetDefaultOptions(SSLCLIENTCONTEXT);

    if (PRIVKEY == NULL || PUBKEY == NULL)
    {
        Log(CryptoGetMissingKeyLogLevel(),
            "No public/private key pair is loaded, trying to reload");
        LoadSecretKeys();
        if (PRIVKEY == NULL || PUBKEY == NULL)
        {
            Log(CryptoGetMissingKeyLogLevel(),
                "No public/private key pair found");
            goto err2;
        }
    }

    /* Create cert into memory and load it into SSL context. */
    SSLCLIENTCERT = TLSGenerateCertFromPrivKey(PRIVKEY);
    if (SSLCLIENTCERT == NULL)
    {
        Log(LOG_LEVEL_ERR,
            "Failed to generate in-memory-certificate from private key");
        goto err2;
    }

    SSL_CTX_use_certificate(SSLCLIENTCONTEXT, SSLCLIENTCERT);

    ret = SSL_CTX_use_RSAPrivateKey(SSLCLIENTCONTEXT, PRIVKEY);
    if (ret != 1)
    {
        Log(LOG_LEVEL_ERR, "Failed to use RSA private key: %s",
            ERR_reason_error_string(ERR_get_error()));
        goto err3;
    }

    /* Verify cert consistency. */
    ret = SSL_CTX_check_private_key(SSLCLIENTCONTEXT);
    if (ret != 1)
    {
        Log(LOG_LEVEL_ERR, "Inconsistent key and TLS cert: %s",
            ERR_reason_error_string(ERR_get_error()));
        goto err3;
    }

    is_initialised = true;
    return true;

  err3:
    X509_free(SSLCLIENTCERT);
    SSLCLIENTCERT = NULL;
  err2:
    SSL_CTX_free(SSLCLIENTCONTEXT);
    SSLCLIENTCONTEXT = NULL;
  err1:
    return false;
}