1 /* $NetBSD: mail_task.c,v 1.3 2022/10/08 16:12:45 christos Exp $ */
2
3 /*++
4 /* NAME
5 /* mail_task 3
6 /* SUMMARY
7 /* set task name for logging purposes
8 /* SYNOPSIS
9 /* #include <mail_task.h>
10 /*
11 /* const char *mail_task(argv0)
12 /* const char *argv0;
13 /* DESCRIPTION
14 /* mail_task() enforces consistent naming of mailer processes.
15 /* It strips pathname information from the process name, and
16 /* prepends the name of the mail system so that logfile entries
17 /* are easier to recognize. The mail system name is specified
18 /* with the "syslog_name" configuration parameter.
19 /*
20 /* The result is overwritten with each call.
21 /*
22 /* A null argv0 argument requests that the current result is
23 /* returned, or "unknown" when no current result exists.
24 /* LICENSE
25 /* .ad
26 /* .fi
27 /* The Secure Mailer license must be distributed with this software.
28 /* AUTHOR(S)
29 /* Wietse Venema
30 /* IBM T.J. Watson Research
31 /* P.O. Box 704
32 /* Yorktown Heights, NY 10598, USA
33 /*
34 /* Wietse Venema
35 /* Google, Inc.
36 /* 111 8th Avenue
37 /* New York, NY 10011, USA
38 /*--*/
39
40 /* System library. */
41
42 #include <sys_defs.h>
43 #include <string.h>
44
45 /* Utility library. */
46
47 #include <vstring.h>
48 #include <safe.h>
49
50 /* Global library. */
51
52 #include "mail_params.h"
53 #include "mail_conf.h"
54 #include "mail_task.h"
55
56 /* mail_task - clean up and decorate the process name */
57
mail_task(const char * argv0)58 const char *mail_task(const char *argv0)
59 {
60 static VSTRING *canon_name;
61 const char *slash;
62 const char *tag;
63
64 if (argv0 == 0 && canon_name == 0)
65 argv0 = "unknown";
66 if (argv0) {
67 if (canon_name == 0)
68 canon_name = vstring_alloc(10);
69 if ((slash = strrchr(argv0, '/')) != 0 && slash[1])
70 argv0 = slash + 1;
71 /* Setenv()-ed from main.cf, or inherited from master. */
72 if ((tag = safe_getenv(CONF_ENV_LOGTAG)) == 0)
73 /* Check main.cf settings directly, in case set-gid. */
74 tag = var_syslog_name ? var_syslog_name :
75 mail_conf_eval(DEF_SYSLOG_NAME);
76 vstring_sprintf(canon_name, "%s/%s", tag, argv0);
77 }
78 return (vstring_str(canon_name));
79 }
80