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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2018-2022. All Rights Reserved.
*
* Licensed 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.
*
* %CopyrightEnd%
*
* ----------------------------------------------------------------------
* Purpose : Debug functions for the socket and net NIF(s).
* ----------------------------------------------------------------------
*
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef ESOCK_ENABLE
#include <stdarg.h>
#include <string.h>
#include <stdio.h>
#include <ctype.h>
#include <time.h>
#include <erl_nif.h>
#include "socket_util.h"
#include "socket_dbg.h"
#define TSELF() enif_thread_self()
#define TNAME(__T__) enif_thread_name( __T__ )
#define TSNAME() TNAME(TSELF())
FILE* esock_dbgout = NULL;
/* Leave at least 14 for the filename */
#define PATH_LEN (MAX_PATH - 14)
extern
BOOLEAN_T esock_dbg_init(char* filename)
{
size_t n;
FILE *fp;
const char mode[] = "w+";
if (filename == NULL) {
esock_dbgout = stdout;
return TRUE; // Valid default stdout
}
if ((n = strlen(filename)) == 0) {
esock_dbgout = stdout;
return TRUE; // Valid selection of stdout
}
fp = NULL;
#if defined(__WIN32__)
{
/* char path[PATH_LEN]; */
/* char tf[MAX_PATH]; */
/* DWORD wres; */
/* wres = GetTempPathA(PATH_LEN, &path); */
/* if ((wres > PATH_LEN) || (wres == 0)) { */
/* /\* */
/* * We don't really care what is wrong. */
/* * Just make the simplest possible solution (= use stdout) */
/* *\/ */
/* esock_dbgout = stdout; */
/* return TRUE; // Successful file open */
/* }; */
/* /\* If 'filename' has been constructed in the unix */
/* * way, this may result in an odd tf... */
/* *\/ */
/* wres = GetTempFileNameA(path, filename, 0, &tf); */
/* if (wres == 0) { */
/* /\* */
/* * Again, we don't really care *what* is wrong. */
/* * Just make the simplest possible solution (= use stdout) */
/* *\/ */
/* esock_dbgout = stdout; */
/* return TRUE; // Successful file open */
/* } */
// Should we use CreateFile instead?
// fp = fopen(tf, mode);
/* For simplicity, we do not (*currently*) support generating
* a 'temporary' (debug) file name, we simply use the file name
* 'as is'.
*/
fp = fopen(filename, mode);
}
#else
/* If there is trailing ?????? replace it with XXXXXX
* and use mkstemp() to create an unique file name
*/
if (n >= 6) {
size_t k;
for (k = n - 6; k < n; k++)
if (filename[k] != '?') break;
if (k == n) {
int fd;
/* ?:s up to the end */
for (k = n - 6; k < n; k++)
filename[k] = 'X';
if ((fd = mkstemp(filename)) >= 0)
fp = fdopen(fd, mode);
} else {
fp = fopen(filename, mode);
}
} else {
fp = fopen(filename, mode);
}
#endif
if (fp != NULL) {
esock_dbgout = fp;
return TRUE; // Successful file open
}
esock_dbgout = stdout;
return FALSE; // Selected file did not work
}
/*
* Print a debug format string *with* both a timestamp and the
* the name of the *current* thread.
*/
extern
void esock_dbg_printf( const char* prefix, const char* format, ... )
{
va_list args;
char f[512]; // This has to suffice...
char stamp[64];
int res;
/*
* We should really include self in the printout,
* so we can se which process are executing the code.
* But then I must change the API....something for later.
*/
if (esock_timestamp_str(stamp, sizeof(stamp))) {
res = enif_snprintf(f, sizeof(f), "%s [%s] [%s] %s",
prefix, stamp, TSNAME(), format);
} else {
res = enif_snprintf(f, sizeof(f), "%s [%s] %s",
prefix, TSNAME(), format);
}
if (res < sizeof(f)) {
va_start (args, format);
enif_vfprintf(esock_dbgout, f, args);
va_end (args);
fflush(esock_dbgout);
}
}
#endif
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