1 /*
2 * $Id: log.c,v 1.1 1998/05/17 15:24:54 elkner Exp $
3 *
4 * Author: Jens Elkner elkner@ivs.cs.uni-magdeburg.de
5 * Project: Jesred http://ivs.cs.uni-magdeburg.de/~elkner/webtools/jesred/
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * http://www.gnu.org/copyleft/gpl.html or ./gpl.html
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 *
22 */
23
24 #include<stdlib.h>
25 #include<stdarg.h>
26 #include<stdio.h>
27 #include<sys/time.h>
28
29 #include "main.h"
30 #include "util.h"
31 #include "log.h"
32
33 FILE *openFile(char *);
34
35 void
openLogs(char ** redirect,char ** rewrite)36 openLogs(char **redirect, char **rewrite)
37 {
38 if ( *rewrite ) {
39 fd_rewrite = openFile(*rewrite);
40 safe_free(*rewrite);
41 }
42 else
43 fd_rewrite = NULL;
44 if ( *redirect ) {
45 fd_redirect = openFile(*redirect);
46 safe_free(*redirect);
47 }
48 else
49 fd_redirect = NULL;
50 }
51
52
53 FILE *
openFile(char * file)54 openFile(char *file)
55 {
56 FILE *fd;
57
58 if ((fd = fopen(file, "a+")) == NULL) {
59 fprintf(stderr,"Warning: Can't open file %s for writing! \n"
60 "Skipping all related messages!\n",file);
61 }
62 return fd;
63 }
64
65 void
log(log_code c,char * format,...)66 log(log_code c, char *format, ...) {
67 FILE *fd;
68
69 char msg[BUFSIZE];
70 va_list args;
71 struct timeval current_time;
72
73 va_start(args, format);
74 if(vsprintf(msg, format, args) > (BUFSIZE - 1)) {
75 /* string is longer than the maximum buffer we specified,
76 so just return */
77 return;
78 }
79 va_end(args);
80
81 if(interactive) {
82 gettimeofday(¤t_time, NULL);
83 fprintf(stderr, "%d.%03d %s", (int) current_time.tv_sec,
84 (int) current_time.tv_usec / 1000, msg);
85 fflush(stderr);
86 return;
87 }
88 if (c == MATCH ) {
89 if ( ! fd_rewrite)
90 return;
91 fd = fd_rewrite;
92 }
93 else if ( c == ERROR || c == INFO ) {
94 if (! fd_redirect)
95 return;
96 fd = fd_redirect;
97 }
98 #ifdef DEBUG
99 else if ( c == DEBG ) {
100 if (! fd_redirect )
101 return;
102 fd = fd_redirect;
103 }
104 #endif
105 else
106 return;
107 gettimeofday(¤t_time, NULL);
108 fprintf(fd, "%d.%03d %s", (int) current_time.tv_sec,
109 (int) current_time.tv_usec / 1000, msg);
110 fflush(fd); /* should we really do that all the time ??? */
111 }
112
closeLogs(void)113 void closeLogs(void)
114 {
115 if ( fd_rewrite)
116 fclose(fd_rewrite);
117 if ( fd_redirect)
118 fclose(fd_redirect);
119 }
120