1 /*        $NetBSD: msg_vstream.c,v 1.1.1.1 2009/06/23 10:09:00 tron Exp $       */
2 
3 /*++
4 /* NAME
5 /*        msg_vstream 3
6 /* SUMMARY
7 /*        report diagnostics to VSTREAM
8 /* SYNOPSIS
9 /*        #include <msg_vstream.h>
10 /*
11 /*        void      msg_vstream_init(progname, stream)
12 /*        const char *progname;
13 /*        VSTREAM   *stream;
14 /* DESCRIPTION
15 /*        This module implements support to report msg(3) diagnostics
16 /*        to a VSTREAM.
17 /*
18 /*        msg_vstream_init() sets the program name that appears in each output
19 /*        record, and directs diagnostics (see msg(3)) to the specified
20 /*        VSTREAM. The \fIprogname\fR argument is not copied.
21 /* SEE ALSO
22 /*        msg(3)
23 /* BUGS
24 /*        No guarantee that long records are written atomically.
25 /*        Only the last msg_vstream_init() call takes effect.
26 /* LICENSE
27 /* .ad
28 /* .fi
29 /*        The Secure Mailer license must be distributed with this software.
30 /* AUTHOR(S)
31 /*        Wietse Venema
32 /*        IBM T.J. Watson Research
33 /*        P.O. Box 704
34 /*        Yorktown Heights, NY 10598, USA
35 /*--*/
36 
37 /* System libraries. */
38 
39 #include <sys_defs.h>
40 #include <errno.h>
41 #include <stdlib.h>                     /* 44BSD stdarg.h uses abort() */
42 #include <stdarg.h>
43 
44 /* Utility library. */
45 
46 #include "vstream.h"
47 #include "msg.h"
48 #include "msg_output.h"
49 #include "msg_vstream.h"
50 
51  /*
52   * Private state.
53   */
54 static const char *msg_tag;
55 static VSTREAM *msg_stream;
56 
57 /* msg_vstream_print - log diagnostic to VSTREAM */
58 
msg_vstream_print(int level,const char * text)59 static void msg_vstream_print(int level, const char *text)
60 {
61     static const char *level_text[] = {
62           "info", "warning", "error", "fatal", "panic",
63     };
64 
65     if (level < 0 || level >= (int) (sizeof(level_text) / sizeof(level_text[0])))
66           msg_panic("invalid severity level: %d", level);
67     if (level == MSG_INFO) {
68           vstream_fprintf(msg_stream, "%s: %s\n",
69                               msg_tag, text);
70     } else {
71           vstream_fprintf(msg_stream, "%s: %s: %s\n",
72                               msg_tag, level_text[level], text);
73     }
74     vstream_fflush(msg_stream);
75 }
76 
77 /* msg_vstream_init - initialize */
78 
msg_vstream_init(const char * name,VSTREAM * vp)79 void    msg_vstream_init(const char *name, VSTREAM *vp)
80 {
81     static int first_call = 1;
82 
83     msg_tag = name;
84     msg_stream = vp;
85     if (first_call) {
86           first_call = 0;
87           msg_output(msg_vstream_print);
88     }
89 }
90