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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "splunk-starter.h"
#include <dirent.h>
#include <sys/stat.h>
#include <vespa/log/log.h>
LOG_SETUP(".splunk-starter");
SplunkStarter::SplunkStarter() = default;
SplunkStarter::~SplunkStarter() = default;
namespace {
vespalib::string fixDir(const vespalib::string &parent, const vespalib::string &subdir) {
auto dirname = parent + "/" + subdir;
DIR *dp = opendir(dirname.c_str());
if (dp == NULL) {
if (errno != ENOENT || mkdir(dirname.c_str(), 0755) != 0) {
LOG(warning, "Could not create directory '%s'", dirname.c_str());
perror(dirname.c_str());
}
} else {
closedir(dp);
}
return dirname;
}
vespalib::string
cfFilePath(const vespalib::string &parent, const vespalib::string &filename) {
vespalib::string path = parent;
path = fixDir(path, "etc");
path = fixDir(path, "system");
path = fixDir(path, "local");
return path + "/" + filename;
}
vespalib::string splunkCertPath(const vespalib::string &parent, const vespalib::string &filename) {
vespalib::string path = parent;
path = fixDir(path, "var");
path = fixDir(path, "lib");
path = fixDir(path, "sia");
path = fixDir(path, "certs");
return path + "/" + filename;
}
void appendFile(FILE *target, const vespalib::string &filename) {
FILE *fp = fopen(filename.c_str(), "r");
if (fp != NULL) {
int c;
while (EOF != (c = fgetc(fp))) {
fputc(c, target);
}
fclose(fp);
}
}
} // namespace <unnamed>
void SplunkStarter::gotConfig(const LogforwarderConfig& config) {
vespalib::string path = cfFilePath(config.splunkHome, "deploymentclient.conf");
LOG(debug, "got config, writing %s", path.c_str());
vespalib::string tmpPath = path + ".new";
FILE *fp = fopen(tmpPath.c_str(), "w");
if (fp == NULL) {
LOG(warning, "could not open '%s' for write", tmpPath.c_str());
return;
}
fprintf(fp, "[deployment-client]\n");
fprintf(fp, "clientName = %s\n", config.clientName.c_str());
fprintf(fp, "phoneHomeIntervalInSecs = %i\n", config.phoneHomeInterval);
fprintf(fp, "\n");
fprintf(fp, "[target-broker:deploymentServer]\n");
fprintf(fp, "targetUri = %s\n", config.deploymentServer.c_str());
fclose(fp);
rename(tmpPath.c_str(), path.c_str());
if (getenv("VESPA_HOSTNAME") != NULL &&
getenv("VESPA_TENANT") != NULL &&
getenv("VESPA_APPLICATION")!= NULL &&
getenv("VESPA_INSTANCE") != NULL &&
getenv("VESPA_ENVIRONMENT") != NULL &&
getenv("VESPA_REGION") != NULL)
{
path = cfFilePath(config.splunkHome, "inputs.conf");
tmpPath = path + ".new";
fp = fopen(tmpPath.c_str(), "w");
if (fp != NULL) {
fprintf(fp, "[default]\n");
fprintf(fp, "host = %s\n", getenv("VESPA_HOSTNAME"));
fprintf(fp, "_meta = vespa_tenant::%s vespa_app::%s.%s vespa_zone::%s.%s\n",
getenv("VESPA_TENANT"),
getenv("VESPA_APPLICATION"),
getenv("VESPA_INSTANCE"),
getenv("VESPA_ENVIRONMENT"),
getenv("VESPA_REGION"));
fclose(fp);
rename(tmpPath.c_str(), path.c_str());
}
}
vespalib::string clientCert = clientCertFile();
vespalib::string clientKey = clientKeyFile();
if (!clientCert.empty() && !clientKey.empty()) {
vespalib::string certPath = splunkCertPath(config.splunkHome, "servercert.pem");
tmpPath = certPath + ".new";
fp = fopen(tmpPath.c_str(), "w");
appendFile(fp, clientCert);
appendFile(fp, clientKey);
appendFile(fp, "/opt/yahoo/share/ssl/certs/athenz_certificate_bundle.pem");
fclose(fp);
rename(tmpPath.c_str(), certPath.c_str());
path = cfFilePath(config.splunkHome, "outputs.conf");
tmpPath = path + ".new";
fp = fopen(tmpPath.c_str(), "w");
if (fp != NULL) {
fprintf(fp, "[tcpout]\n");
fprintf(fp, "clientCert = %s\n", certPath.c_str());
fclose(fp);
rename(tmpPath.c_str(), path.c_str());
}
path = cfFilePath(config.splunkHome, "server.conf");
tmpPath = path + ".new";
fp = fopen(tmpPath.c_str(), "w");
if (fp != NULL) {
fprintf(fp, "[sslConfig]\n");
fprintf(fp, "enableSplunkdSSL = true\n");
fprintf(fp, "requireClientCert = true\n");
fprintf(fp, "sslRootCAPath = /opt/yahoo/share/ssl/certs/athenz_certificate_bundle.pem\n");
fprintf(fp, "serverCert = %s\n", certPath.c_str());
fprintf(fp, "\n");
fprintf(fp, "[httpServer]\n");
fprintf(fp, "disableDefaultPort = true\n");
fclose(fp);
rename(tmpPath.c_str(), path.c_str());
}
}
if (config.clientName.size() == 0 ||
config.deploymentServer.size() == 0)
{
_childHandler.stopChild();
} else {
_childHandler.startChild(config.splunkHome);
}
}
void SplunkStarter::stop() {
_childHandler.stopChild();
}
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