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Differential D25380 Diff 125674 usr.sbin/syslogd/syslogd.c

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usr.sbin/syslogd/syslogd.c

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#define F_WALL 6 /* everyone logged on */ #define F_WALL 6 /* everyone logged on */
#define F_PIPE 7 /* pipe to program */ #define F_PIPE 7 /* pipe to program */
enum log_format { DEFAULT_FORMAT = 0, RFC3164, RFC5424 };
#define DEFAULT_FORMAT_IS RFC3164
static const char *TypeNames[] = { static const char *TypeNames[] = {
"UNUSED", "FILE", "TTY", "CONSOLE", "UNUSED", "FILE", "TTY", "CONSOLE",
"FORW", "USERS", "WALL", "PIPE" "FORW", "USERS", "WALL", "PIPE"
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static int needdofsync = 0; /* Are any file(s) waiting to be fsynced? */ static int needdofsync = 0; /* Are any file(s) waiting to be fsynced? */
static struct pidfh *pfh; static struct pidfh *pfh;
static int sigpipe[2]; /* Pipe to catch a signal during select(). */ static int sigpipe[2]; /* Pipe to catch a signal during select(). */
static bool RFC3164OutputFormat = true; /* Use legacy format by default. */
/*
* Formats to write output in. NetworkFormat controls logs sent to
* remote syslog servers; when unset, it defaults to the same as
* OutputFormat. OutputFormat defaults to RFC3164 format for backwards
* compatibility.
*/
static enum log_format NetworkFormat, OutputFormat;
static volatile sig_atomic_t MarkSet, WantDie, WantInitialize, WantReapchild; static volatile sig_atomic_t MarkSet, WantDie, WantInitialize, WantReapchild;
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if (madvise(NULL, 0, MADV_PROTECT) != 0) if (madvise(NULL, 0, MADV_PROTECT) != 0)
dprintf("madvise() failed: %s\n", strerror(errno)); dprintf("madvise() failed: %s\n", strerror(errno));
while ((ch = getopt(argc, argv, "468Aa:b:cCdf:FHkl:M:m:nNoO:p:P:sS:Tuv")) while ((ch = getopt(argc, argv, "468Aa:b:cCdf:FHkl:M:m:nNoO:p:P:r:sS:Tuv"))
!= -1) != -1)
switch (ch) { switch (ch) {
#ifdef INET #ifdef INET
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case 'O': case 'O':
if (strcmp(optarg, "bsd") == 0 || if (strcmp(optarg, "bsd") == 0 ||
strcmp(optarg, "rfc3164") == 0) strcmp(optarg, "rfc3164") == 0)
RFC3164OutputFormat = true; OutputFormat = RFC3164;
else if (strcmp(optarg, "syslog") == 0 || else if (strcmp(optarg, "syslog") == 0 ||
strcmp(optarg, "rfc5424") == 0) strcmp(optarg, "rfc5424") == 0)
RFC3164OutputFormat = false; OutputFormat = RFC5424;
else else
usage(); usage();
break; break;
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case 'P': /* path for alt. PID */ case 'P': /* path for alt. PID */
PidFile = optarg; PidFile = optarg;
break; break;
case 'r':
if (strcmp(optarg, "bsd") == 0 ||
strcmp(optarg, "rfc3164") == 0)
NetworkFormat = RFC3164;
else if (strcmp(optarg, "syslog") == 0 ||
strcmp(optarg, "rfc5424") == 0)
NetworkFormat = RFC5424;
else
usage();
break;
case 's': /* no network mode */ case 's': /* no network mode */
SecureMode++; SecureMode++;
break; break;
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if ((argc -= optind) != 0) if ((argc -= optind) != 0)
usage(); usage();
if (RFC3164OutputFormat && MaxForwardLen > 1024) /* Explicitly set formats which have been defaulted to the defaults */
if (OutputFormat == DEFAULT_FORMAT)
OutputFormat = DEFAULT_FORMAT_IS;
if (NetworkFormat == DEFAULT_FORMAT)
NetworkFormat = OutputFormat;
if (NetworkFormat == RFC3164 && MaxForwardLen > 1024)
errx(1, "RFC 3164 messages may not exceed 1024 bytes"); errx(1, "RFC 3164 messages may not exceed 1024 bytes");
/* Pipe to catch a signal during select(). */ /* Pipe to catch a signal during select(). */
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" [-b bind_address] [-f config_file]\n" " [-b bind_address] [-f config_file]\n"
" [-l [mode:]path] [-M fwd_length]\n" " [-l [mode:]path] [-M fwd_length]\n"
" [-m mark_interval] [-O format] [-P pid_file]\n" " [-m mark_interval] [-O format] [-P pid_file]\n"
" [-p log_socket] [-S logpriv_socket]\n"); " [-p log_socket] [-r format] [-S logpriv_socket]\n");
exit(1); exit(1);
} }
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const char *procid, const char *msgid __unused, const char *procid, const char *msgid __unused,
const char *structured_data __unused, const char *msg, int flags) const char *structured_data __unused, const char *msg, int flags)
{ {
enum log_format want_format;
dprintf("Logging to %s", TypeNames[f->f_type]); dprintf("Logging to %s", TypeNames[f->f_type]);
f->f_time = now; f->f_time = now;
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return; return;
} }
if (RFC3164OutputFormat) want_format = (f->f_type == F_FORW) ? NetworkFormat : OutputFormat;
if (want_format == RFC3164)
fprintlog_rfc3164(f, hostname, app_name, procid, msg, flags); fprintlog_rfc3164(f, hostname, app_name, procid, msg, flags);
else else
fprintlog_rfc5424(f, hostname, app_name, procid, msgid, fprintlog_rfc5424(f, hostname, app_name, procid, msgid,
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if (hl > 0 && hname[hl-1] == '.') if (hl > 0 && hname[hl-1] == '.')
hname[--hl] = '\0'; hname[--hl] = '\0';
/* RFC 5424 prefers logging FQDNs. */ /* RFC 5424 prefers logging FQDNs. */
if (RFC3164OutputFormat) if (OutputFormat == RFC3164)
trimdomain(hname, hl); trimdomain(hname, hl);
return (hname); return (hname);
} }
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err(EX_OSERR, "gethostname() failed"); err(EX_OSERR, "gethostname() failed");
if ((p = strchr(LocalHostName, '.')) != NULL) { if ((p = strchr(LocalHostName, '.')) != NULL) {
/* RFC 5424 prefers logging FQDNs. */ /* RFC 5424 prefers logging FQDNs. */
if (RFC3164OutputFormat) if (OutputFormat == RFC3164)
*p = '\0'; *p = '\0';
LocalDomain = p + 1; LocalDomain = p + 1;
} else { } else {
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if (hl > 0 && f->f_host[hl-1] == '.') if (hl > 0 && f->f_host[hl-1] == '.')
f->f_host[--hl] = '\0'; f->f_host[--hl] = '\0';
/* RFC 5424 prefers logging FQDNs. */ /* RFC 5424 prefers logging FQDNs. */
if (RFC3164OutputFormat) if (OutputFormat == RFC3164)
trimdomain(f->f_host, hl); trimdomain(f->f_host, hl);
} }
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