* Exim - an Internet mail transport agent *
*************************************************/
+/* Copyright (c) The Exim Maintainers 2020 - 2022 */
/* Copyright (c) University of Cambridge 1995 - 2018 */
-/* Copyright (c) The Exim Maintainers 2020 - 2021 */
/* See the file NOTICE for conditions of use and distribution. */
/* Functions for writing log files. The code for maintaining datestamped
number definitions in macros.h */
static const uschar * exim_errstrings[] = {
- US"",
- US"unknown error",
- US"user slash",
- US"exist race",
- US"not regular",
- US"not directory",
- US"bad ugid",
- US"bad mode",
- US"inode changed",
- US"lock failed",
- US"bad address2",
- US"forbid pipe",
- US"forbid file",
- US"forbid reply",
- US"missing pipe",
- US"missing file",
- US"missing reply",
- US"bad redirect",
- US"smtp closed",
- US"smtp format",
- US"spool format",
- US"not absolute",
- US"Exim-imposed quota",
- US"held",
- US"Delivery filter process failure",
- US"Delivery add/remove header failure",
- US"Delivery write incomplete error",
- US"Some expansion failed",
- US"Failed to get gid",
- US"Failed to get uid",
- US"Unset or non-existent transport",
- US"MBX length mismatch",
- US"Lookup failed routing or in smtp tpt",
- US"Can't match format in appendfile",
- US"Creation outside home in appendfile",
- US"Can't check a list; lookup defer",
- US"DNS lookup defer",
- US"Failed to start TLS session",
- US"Mandatory TLS session not started",
- US"Failed to chown a file",
- US"Failed to create a pipe",
- US"When verifying",
- US"When required by client",
- US"Used internally in smtp transport",
- US"RCPT gave 4xx error",
- US"MAIL gave 4xx error",
- US"DATA gave 4xx error",
- US"Negotiation failed for proxy configured host",
- US"Authenticator 'other' failure",
- US"target not supporting SMTPUTF8",
- US"host is local",
- US"tainted filename",
-
- US"Not time for routing",
- US"Not time for local delivery",
- US"Not time for any remote host",
- US"Local-only delivery",
- US"Domain in queue_domains",
- US"Transport concurrency limit",
- US"Event requests alternate response",
+ [0] = US"",
+ [- ERRNO_UNKNOWNERROR] = US"unknown error",
+ [- ERRNO_USERSLASH] = US"user slash",
+ [- ERRNO_EXISTRACE] = US"exist race",
+ [- ERRNO_NOTREGULAR] = US"not regular",
+ [- ERRNO_NOTDIRECTORY] = US"not directory",
+ [- ERRNO_BADUGID] = US"bad ugid",
+ [- ERRNO_BADMODE] = US"bad mode",
+ [- ERRNO_INODECHANGED] = US"inode changed",
+ [- ERRNO_LOCKFAILED] = US"lock failed",
+ [- ERRNO_BADADDRESS2] = US"bad address2",
+ [- ERRNO_FORBIDPIPE] = US"forbid pipe",
+ [- ERRNO_FORBIDFILE] = US"forbid file",
+ [- ERRNO_FORBIDREPLY] = US"forbid reply",
+ [- ERRNO_MISSINGPIPE] = US"missing pipe",
+ [- ERRNO_MISSINGFILE] = US"missing file",
+ [- ERRNO_MISSINGREPLY] = US"missing reply",
+ [- ERRNO_BADREDIRECT] = US"bad redirect",
+ [- ERRNO_SMTPCLOSED] = US"smtp closed",
+ [- ERRNO_SMTPFORMAT] = US"smtp format",
+ [- ERRNO_SPOOLFORMAT] = US"spool format",
+ [- ERRNO_NOTABSOLUTE] = US"not absolute",
+ [- ERRNO_EXIMQUOTA] = US"Exim-imposed quota",
+ [- ERRNO_HELD] = US"held",
+ [- ERRNO_FILTER_FAIL] = US"Delivery filter process failure",
+ [- ERRNO_CHHEADER_FAIL] = US"Delivery add/remove header failure",
+ [- ERRNO_WRITEINCOMPLETE] = US"Delivery write incomplete error",
+ [- ERRNO_EXPANDFAIL] = US"Some expansion failed",
+ [- ERRNO_GIDFAIL] = US"Failed to get gid",
+ [- ERRNO_UIDFAIL] = US"Failed to get uid",
+ [- ERRNO_BADTRANSPORT] = US"Unset or non-existent transport",
+ [- ERRNO_MBXLENGTH] = US"MBX length mismatch",
+ [- ERRNO_UNKNOWNHOST] = US"Lookup failed routing or in smtp tpt",
+ [- ERRNO_FORMATUNKNOWN] = US"Can't match format in appendfile",
+ [- ERRNO_BADCREATE] = US"Creation outside home in appendfile",
+ [- ERRNO_LISTDEFER] = US"Can't check a list; lookup defer",
+ [- ERRNO_DNSDEFER] = US"DNS lookup defer",
+ [- ERRNO_TLSFAILURE] = US"Failed to start TLS session",
+ [- ERRNO_TLSREQUIRED] = US"Mandatory TLS session not started",
+ [- ERRNO_CHOWNFAIL] = US"Failed to chown a file",
+ [- ERRNO_PIPEFAIL] = US"Failed to create a pipe",
+ [- ERRNO_CALLOUTDEFER] = US"When verifying",
+ [- ERRNO_AUTHFAIL] = US"When required by client",
+ [- ERRNO_CONNECTTIMEOUT] = US"Used internally in smtp transport",
+ [- ERRNO_RCPT4XX] = US"RCPT gave 4xx error",
+ [- ERRNO_MAIL4XX] = US"MAIL gave 4xx error",
+ [- ERRNO_DATA4XX] = US"DATA gave 4xx error",
+ [- ERRNO_PROXYFAIL] = US"Negotiation failed for proxy configured host",
+ [- ERRNO_AUTHPROB] = US"Authenticator 'other' failure",
+ [- ERRNO_UTF8_FWD] = US"target not supporting SMTPUTF8",
+ [- ERRNO_HOST_IS_LOCAL] = US"host is local",
+ [- ERRNO_TAINT] = US"tainted filename",
+
+ [- ERRNO_RRETRY] = US"Not time for routing",
+
+ [- ERRNO_LRETRY] = US"Not time for local delivery",
+ [- ERRNO_HRETRY] = US"Not time for any remote host",
+ [- ERRNO_LOCAL_ONLY] = US"Local-only delivery",
+ [- ERRNO_QUEUE_DOMAIN] = US"Domain in queue_domains",
+ [- ERRNO_TRETRY] = US"Transport concurrency limit",
+
+ [- ERRNO_EVENT] = US"Event requests alternate response",
};
uschar *lastslash = Ustrrchr(name, '/');
*lastslash = 0;
created = directory_make(NULL, name, LOG_DIRECTORY_MODE, FALSE);
- DEBUG(D_any) debug_printf("%s log directory %s\n",
- created ? "created" : "failed to create", name);
+ DEBUG(D_any)
+ if (created)
+ debug_printf("created log directory %s\n", name);
+ else
+ debug_printf("failed to create log directory %s: %s\n", name, strerror(errno));
*lastslash = '/';
if (created) fd = Uopen(name, flags, LOG_MODE);
}
it does not exist. This may be called recursively on failure, in order to open
the panic log.
-The directory is in the static variable file_path. This is static so that it
+The directory is in the static variable file_path. This is static so that
the work of sorting out the path is done just once per Exim process.
Exim is normally configured to avoid running as root wherever possible, the log
Ustrcpy(debuglog_name, buffer);
if (tag)
{
+ if (is_tainted(tag))
+ die(US"exim: tainted tag for debug log filename",
+ US"Logging failure; please try later");
+
/* this won't change the offset of the datestamp */
ok2 = string_format(buffer, sizeof(buffer), "%s%s",
debuglog_name, tag);
}
+/* Close mainlog, unless we do not see a chance to open the file mainlog later
+again. This will happen if we log from a transport process (which has dropped
+privs); something we traditionally avoid, but the introduction of taint-tracking
+and resulting detection of errors is makinng harder. */
+
void
mainlog_close(void)
{
-if (mainlogfd < 0) return;
+if (mainlogfd < 0
+ || !(geteuid() == 0 || geteuid() == exim_uid))
+ return;
(void)close(mainlogfd);
mainlogfd = -1;
mainlog_inode = 0;
projects / user / henk / code / exim.git / blobdiff