2 * Implementation of logging facilities.
4 * Europagate, 1994-1995.
7 * Revision 1.4 1995/02/23 08:32:22 adam
10 * Revision 1.2 1995/02/17 17:06:56 adam
11 * Remove everything before '/' in app_name. Use compact date format.
13 * Revision 1.1.1.1 1995/02/09 17:27:12 adam
14 * Initial version of email gateway under CVS control.
16 * Initial: Dec 7, 94 (Adam Dickmeiss)
29 static char *app_name = NULL;
30 static unsigned level = GW_LOG_DEFAULT;
31 static int session = 0;
34 unsigned mask; /* level mask for this file entry */
35 int fd; /* file descriptor for this file */
36 char *fname; /* name of file ("" if stdout) */
37 struct file_mask *next; /* next file in chain */
40 struct file_mask *file_mask_list = NULL;
42 char *gw_strdup (const char *s)
44 char *n = malloc (strlen(s)+1);
50 void gw_log_init (const char *app_name_a)
52 struct file_mask *list, *list1;
55 if ((cp = strrchr (app_name_a, '/')))
56 app_name = gw_strdup (cp+1);
58 app_name = gw_strdup (app_name_a);
59 level = GW_LOG_DEFAULT;
62 /* clean up all output file masks... */
63 for (list = file_mask_list; list; list = list1)
65 if (list->fd > 2) /* avoid closing stdout/stderr */
71 file_mask_list = NULL;
74 void gw_log_level (unsigned level_a)
79 void gw_log_session (int session_a)
84 int gw_log_file (unsigned level_a, const char *fname_a)
86 struct file_mask **listp, *new_file_mask;
87 listp = &file_mask_list;
89 /* go through file mask list and close files already associated */
93 if (!((*listp)->mask &= ~level_a)) /* any levels left on this one? */
95 if ((*listp)->fd > 2) /* close if not stdout/stderr */
97 free ((*listp)->fname);
98 *listp = (*listp)->next;
100 listp = &(*listp)->next;
102 if (!fname_a) /* stderr? */
103 return 0; /* stderr doesn't appear on list */
104 new_file_mask = malloc (sizeof(*new_file_mask));
107 new_file_mask->mask = level_a;
108 new_file_mask->next = file_mask_list;
109 file_mask_list = new_file_mask;
110 if (!(file_mask_list->fname = gw_strdup (fname_a)))
112 if (*fname_a == '\0') /* stdout? */
113 new_file_mask->fd = 1;
114 else /* no, open as usual */
116 new_file_mask->fd = open (fname_a, O_WRONLY|O_CREAT|O_APPEND, 0666);
117 if (new_file_mask->fd == -1)
123 int gw_log (unsigned level_a, const char *event_type, const char *format, ...)
125 static char emit_str[2048];
126 struct file_mask *list;
128 unsigned e_level = level_a & level;
135 if (!e_level) /* any effective level(s)? */
138 va_start (ap, format);
140 memcpy (&tms, localtime (&time_now), sizeof(tms));
141 sprintf (emit_str, "%s %d %02d%02d%02d%02d%02d%02d %d %s ",
143 tms.tm_year, tms.tm_mon, tms.tm_mday,
144 tms.tm_hour, tms.tm_min, tms.tm_sec,
145 e_level, event_type);
146 if ((cp = strchr (emit_str, '\n'))) /* remove \n from ctime-str */
148 count = strlen (emit_str);
149 vsprintf (emit_str+count, format, ap);
150 strcat (emit_str, "\n");
151 count = strlen (emit_str);
153 /* go through file mask list... */
154 for (list = file_mask_list; list; list = list->next)
155 if (list->mask & e_level) /* output this one? */
157 e_level &= ~list->mask; /* remove from effective level */
158 if (write (list->fd, emit_str, count) != count)
161 if (e_level) /* bits left on effective level? */
162 write (2, emit_str, count);