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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#include <thrift/Thrift.h>
#include <thrift/TToString.h>
#include <cstring>
#include <cstdlib>
#include <stdarg.h>
#include <stdio.h>
#ifdef _WIN32
#include <windows.h>
#endif
namespace apache {
namespace thrift {
THRIFT_EXPORT TOutput GlobalOutput;
TOutput::TOutput() : f_(&errorTimeWrapper) {}
void TOutput::printf(const char* message, ...) {
#ifndef THRIFT_SQUELCH_CONSOLE_OUTPUT
// Try to reduce heap usage, even if printf is called rarely.
static const int STACK_BUF_SIZE = 256;
char stack_buf[STACK_BUF_SIZE];
va_list ap;
#ifdef _MSC_VER
va_start(ap, message);
int need = _vscprintf(message, ap);
va_end(ap);
if (need < STACK_BUF_SIZE) {
va_start(ap, message);
vsnprintf_s(stack_buf, STACK_BUF_SIZE, _TRUNCATE, message, ap);
va_end(ap);
f_(stack_buf);
return;
}
#else
va_start(ap, message);
int need = vsnprintf(stack_buf, STACK_BUF_SIZE, message, ap);
va_end(ap);
if (need < STACK_BUF_SIZE) {
f_(stack_buf);
return;
}
#endif
char* heap_buf = (char*)malloc((need + 1) * sizeof(char));
if (heap_buf == nullptr) {
#ifdef _MSC_VER
va_start(ap, message);
vsnprintf_s(stack_buf, STACK_BUF_SIZE, _TRUNCATE, message, ap);
va_end(ap);
#endif
// Malloc failed. We might as well print the stack buffer.
f_(stack_buf);
return;
}
va_start(ap, message);
int rval = vsnprintf(heap_buf, need + 1, message, ap);
va_end(ap);
// TODO(shigin): inform user
if (rval != -1) {
f_(heap_buf);
}
free(heap_buf);
#endif
}
void TOutput::errorTimeWrapper(const char* msg) {
#ifndef THRIFT_SQUELCH_CONSOLE_OUTPUT
time_t now;
char dbgtime[26];
time(&now);
THRIFT_CTIME_R(&now, dbgtime);
dbgtime[24] = 0;
fprintf(stderr, "Thrift: %s %s\n", dbgtime, msg);
#endif
}
void TOutput::perror(const char* message, int errno_copy) {
std::string out = message + std::string(": ") + strerror_s(errno_copy);
f_(out.c_str());
}
std::string TOutput::strerror_s(int errno_copy) {
char b_errbuf[1024] = {'\0'};
#ifdef HAVE_STRERROR_R
#ifdef STRERROR_R_CHAR_P
char* b_error = ::strerror_r(errno_copy, b_errbuf, sizeof(b_errbuf));
#else // STRERROR_R_CHAR_P
char* b_error = b_errbuf;
int rv = strerror_r(errno_copy, b_errbuf, sizeof(b_errbuf));
if (rv == -1) {
// strerror_r failed. omgwtfbbq.
return "XSI-compliant strerror_r() failed with errno = "
+ to_string(errno_copy);
}
#endif // STRERROR_R_CHAR_P
#else // HAVE_STRERROR_R
#ifdef _WIN32
const size_t size = FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
nullptr, errno_copy, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
b_errbuf, sizeof(b_errbuf), nullptr);
if (size > 2 && b_errbuf[size-2] == '\r' && b_errbuf[size-1] == '\n') {
b_errbuf[size-2] = '\0';
b_errbuf[size-1] = '\0';
}
#else // _WIN32
::strerror_s(b_errbuf, sizeof(b_errbuf), errno_copy);
#endif // _WIN32
char* b_error = b_errbuf;
#endif // HAVE_STRERROR_R
// Can anyone prove that explicit cast is probably not necessary
// to ensure that the string object is constructed before
// b_error becomes invalid?
return std::string(b_error);
}
}
} // apache::thrift
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