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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
***************************************************************************/
#include "curl_setup.h"
#ifdef ENABLE_QUIC
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#include "urldata.h"
#include "dynbuf.h"
#include "curl_printf.h"
#include "vquic.h"
#ifdef O_BINARY
#define QLOGMODE O_WRONLY|O_CREAT|O_BINARY
#else
#define QLOGMODE O_WRONLY|O_CREAT
#endif
/*
* If the QLOGDIR environment variable is set, open and return a file
* descriptor to write the log to.
*
* This function returns error if something failed outside of failing to
* create the file. Open file success is deemed by seeing if the returned fd
* is != -1.
*/
CURLcode Curl_qlogdir(struct Curl_easy *data,
unsigned char *scid,
size_t scidlen,
int *qlogfdp)
{
const char *qlog_dir = getenv("QLOGDIR");
*qlogfdp = -1;
if(qlog_dir) {
struct dynbuf fname;
CURLcode result;
unsigned int i;
Curl_dyn_init(&fname, DYN_QLOG_NAME);
result = Curl_dyn_add(&fname, qlog_dir);
if(!result)
result = Curl_dyn_add(&fname, "/");
for(i = 0; (i < scidlen) && !result; i++) {
char hex[3];
msnprintf(hex, 3, "%02x", scid[i]);
result = Curl_dyn_add(&fname, hex);
}
if(!result)
result = Curl_dyn_add(&fname, ".qlog");
if(!result) {
int qlogfd = open(Curl_dyn_ptr(&fname), QLOGMODE,
data->set.new_file_perms);
if(qlogfd != -1)
*qlogfdp = qlogfd;
}
Curl_dyn_free(&fname);
if(result)
return result;
}
return CURLE_OK;
}
#endif
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