| 1 | /***************************************************************************
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| 2 | * _ _ ____ _
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| 3 | * Project ___| | | | _ \| |
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| 4 | * / __| | | | |_) | |
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| 5 | * | (__| |_| | _ <| |___
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| 6 | * \___|\___/|_| \_\_____|
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| 7 | *
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| 8 | * Copyright (C) 1998 - 2022, Daniel Stenberg, <[email protected]>, et al.
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| 9 | *
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| 10 | * This software is licensed as described in the file COPYING, which
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| 11 | * you should have received as part of this distribution. The terms
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| 12 | * are also available at https://curl.se/docs/copyright.html.
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| 13 | *
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| 14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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| 15 | * copies of the Software, and permit persons to whom the Software is
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| 16 | * furnished to do so, under the terms of the COPYING file.
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| 17 | *
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| 18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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| 19 | * KIND, either express or implied.
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| 20 | *
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| 21 | * SPDX-License-Identifier: curl
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| 22 | *
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| 23 | ***************************************************************************/
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| 24 |
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| 25 | #include "curl_setup.h"
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| 26 |
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| 27 | #ifdef ENABLE_QUIC
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| 28 |
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| 29 | #ifdef HAVE_FCNTL_H
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| 30 | #include <fcntl.h>
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| 31 | #endif
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| 32 | #include "urldata.h"
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| 33 | #include "dynbuf.h"
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| 34 | #include "curl_printf.h"
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| 35 | #include "vquic.h"
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| 36 |
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| 37 | #ifdef O_BINARY
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| 38 | #define QLOGMODE O_WRONLY|O_CREAT|O_BINARY
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| 39 | #else
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| 40 | #define QLOGMODE O_WRONLY|O_CREAT
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| 41 | #endif
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| 42 |
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| 43 | /*
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| 44 | * If the QLOGDIR environment variable is set, open and return a file
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| 45 | * descriptor to write the log to.
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| 46 | *
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| 47 | * This function returns error if something failed outside of failing to
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| 48 | * create the file. Open file success is deemed by seeing if the returned fd
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| 49 | * is != -1.
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| 50 | */
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| 51 | CURLcode Curl_qlogdir(struct Curl_easy *data,
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| 52 | unsigned char *scid,
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| 53 | size_t scidlen,
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| 54 | int *qlogfdp)
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| 55 | {
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| 56 | const char *qlog_dir = getenv("QLOGDIR");
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| 57 | *qlogfdp = -1;
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| 58 | if(qlog_dir) {
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| 59 | struct dynbuf fname;
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| 60 | CURLcode result;
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| 61 | unsigned int i;
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| 62 | Curl_dyn_init(&fname, DYN_QLOG_NAME);
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| 63 | result = Curl_dyn_add(&fname, qlog_dir);
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| 64 | if(!result)
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| 65 | result = Curl_dyn_add(&fname, "/");
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| 66 | for(i = 0; (i < scidlen) && !result; i++) {
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| 67 | char hex[3];
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| 68 | msnprintf(hex, 3, "%02x", scid[i]);
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| 69 | result = Curl_dyn_add(&fname, hex);
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| 70 | }
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| 71 | if(!result)
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| 72 | result = Curl_dyn_add(&fname, ".sqlog");
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| 73 |
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| 74 | if(!result) {
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| 75 | int qlogfd = open(Curl_dyn_ptr(&fname), QLOGMODE,
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| 76 | data->set.new_file_perms);
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| 77 | if(qlogfd != -1)
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| 78 | *qlogfdp = qlogfd;
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| 79 | }
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| 80 | Curl_dyn_free(&fname);
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| 81 | if(result)
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| 82 | return result;
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| 83 | }
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| 84 |
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| 85 | return CURLE_OK;
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| 86 | }
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| 87 | #endif
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