1 /**
2 * log.c -- log and error handling.
3 * _______ _______ __ __
4 * / ____/ | / / ___/____ _____/ /_____ / /_
5 * / / __ | | /| / /\__ \/ __ \/ ___/ //_/ _ \/ __/
6 * / /_/ / | |/ |/ /___/ / /_/ / /__/ ,< / __/ /_
7 * \____/ |__/|__//____/\____/\___/_/|_|\___/\__/
8 *
9 * The MIT License (MIT)
10 * Copyright (c) 2009-2016 Gerardo Orellana <hello @ goaccess.io>
11 *
12 * Permission is hereby granted, free of charge, to any person obtaining a copy
13 * of this software and associated documentation files (the "Software"), to deal
14 * in the Software without restriction, including without limitation the rights
15 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
16 * copies of the Software, and to permit persons to whom the Software is
17 * furnished to do so, subject to the following conditions:
18 *
19 * The above copyright notice and this permission notice shall be included in all
20 * copies or substantial portions of the Software.
21 *
22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
23 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
24 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
25 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
26 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
27 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
28 * SOFTWARE.
29 */
30
31 #include <stdio.h>
32 #include <string.h>
33 #include <stdarg.h>
34 #include <unistd.h>
35
36 #include "log.h"
37 #include "xmalloc.h"
38
39 static FILE *log_file;
40
41 /* Open a access file whose name is specified in the given path. */
42 int
access_log_open(const char * path)43 access_log_open (const char *path)
44 {
45 if (path == NULL)
46 return 0;
47
48 if (access (path, F_OK) != -1)
49 log_file = fopen (path, "a");
50 else
51 log_file = fopen (path, "w");
52 if (log_file == NULL)
53 return 1;
54
55 return 0;
56 }
57
58 /* Close the access log file. */
59 void
access_log_close(void)60 access_log_close (void)
61 {
62 if (log_file != NULL)
63 fclose (log_file);
64 }
65
66 #pragma GCC diagnostic ignored "-Wformat-nonliteral"
67 /* Debug otuput */
68 void
dbg_printf(const char * fmt,...)69 dbg_printf (const char *fmt, ...)
70 {
71 va_list args;
72 va_start (args, fmt);
73 vfprintf (stderr, fmt, args);
74 va_end (args);
75 }
76
77 /* Write formatted access log data to the logfile. */
78 void
access_fprintf(const char * fmt,...)79 access_fprintf (const char *fmt, ...)
80 {
81 va_list args;
82
83 if (!log_file)
84 return;
85
86 va_start (args, fmt);
87 vfprintf (log_file, fmt, args);
88 fflush (log_file);
89 va_end (args);
90 }
91
92 #pragma GCC diagnostic warning "-Wformat-nonliteral"
93