* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2015 */
+/* Copyright (c) University of Cambridge 1995 - 2016 */
/* See the file NOTICE for conditions of use and distribution. */
/* Functions for writing log files. The code for maintaining datestamped
static int logging_mode = LOG_MODE_FILE;
static uschar *file_path = US"";
-
-
+static size_t pid_position[2];
+
+
+/* These should be kept in-step with the private delivery error
+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"",
+
+ 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",
+};
+
+
+/************************************************/
+const uschar *
+exim_errstr(int err)
+{
+return err < 0 ? exim_errstrings[-err] : CUS strerror(err);
+}
/*************************************************
* Write to syslog *
Arguments:
priority syslog priority
- s the string to be written
+ s the string to be written, the string may be modified!
Returns: nothing
*/
if (running_in_test_harness) return;
-if (!syslog_timestamp) s += log_timezone? 26 : 20;
+if (!syslog_timestamp) s += log_timezone ? 26 : 20;
+if (!syslog_pid && LOGGING(pid))
+ memmove(s + pid_position[0], s + pid_position[1], pid_position[1] - pid_position[0]);
len = Ustrlen(s);
static void
die(uschar *s1, uschar *s2)
{
-if (s1 != NULL)
+if (s1)
{
write_syslog(LOG_CRIT, s1);
- if (debug_file != NULL) debug_printf("%s\n", s1);
+ if (debug_file) debug_printf("%s\n", s1);
if (log_stderr != NULL && log_stderr != debug_file)
fprintf(log_stderr, "%s\n", s1);
}
int
log_create(uschar *name)
{
-int fd = Uopen(name, O_CREAT|O_APPEND|O_WRONLY, LOG_MODE);
+int fd = Uopen(name,
+#ifdef O_CLOEXEC
+ O_CLOEXEC |
+#endif
+ O_CREAT|O_APPEND|O_WRONLY, LOG_MODE);
/* If creation failed, attempt to build a log directory in case that is the
problem. */
*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);
+ created ? "created" : "failed to create", name);
*lastslash = '/';
- if (created) fd = Uopen(name, O_CREAT|O_APPEND|O_WRONLY, LOG_MODE);
+ if (created) fd = Uopen(name,
+#ifdef O_CLOEXEC
+ O_CLOEXEC |
+#endif
+ O_CREAT|O_APPEND|O_WRONLY, LOG_MODE);
}
return fd;
/* If we created a subprocess, wait for it. If it succeeded, try the open. */
while (pid > 0 && waitpid(pid, &status, 0) != pid);
-if (status == 0) fd = Uopen(name, O_APPEND|O_WRONLY, LOG_MODE);
+if (status == 0) fd = Uopen(name,
+#ifdef O_CLOEXEC
+ O_CLOEXEC |
+#endif
+ O_APPEND|O_WRONLY, LOG_MODE);
/* If we failed to create a subprocess, we are in a bad way. We return
with fd still < 0, and errno set, letting the caller handle the error. */
will be compared. The static slot for saving it is the same size as buffer,
and the text has been checked above to fit, so this use of strcpy() is OK. */
-if (type == lt_main)
+if (type == lt_main && string_datestamp_offset >= 0)
{
Ustrcpy(mainlog_name, buffer);
mainlog_datestamp = mainlog_name + string_datestamp_offset;
/* Ditto for the reject log */
-else if (type == lt_reject)
+else if (type == lt_reject && string_datestamp_offset >= 0)
{
Ustrcpy(rejectlog_name, buffer);
rejectlog_datestamp = rejectlog_name + string_datestamp_offset;
/* If the file name is too long, it is an unrecoverable disaster */
if (!ok)
- {
die(US"exim: log file path too long: aborting",
US"Logging failure; please try later");
- }
/* We now have the file name. Try to open an existing file. After a successful
open, arrange for automatic closure on exec(), and then return. */
-*fd = Uopen(buffer, O_APPEND|O_WRONLY, LOG_MODE);
+*fd = Uopen(buffer,
+#ifdef O_CLOEXEC
+ O_CLOEXEC |
+#endif
+ O_APPEND|O_WRONLY, LOG_MODE);
if (*fd >= 0)
{
+#ifndef O_CLOEXEC
(void)fcntl(*fd, F_SETFD, fcntl(*fd, F_GETFD) | FD_CLOEXEC);
+#endif
return;
}
if (*fd >= 0)
{
+#ifndef O_CLOEXEC
(void)fcntl(*fd, F_SETFD, fcntl(*fd, F_GETFD) | FD_CLOEXEC);
+#endif
return;
}
are recursing (can't open the panic log either), the pointer will already be
set. */
-if (panic_save_buffer == NULL)
- {
- panic_save_buffer = (uschar *)malloc(LOG_BUFFER_SIZE);
- if (panic_save_buffer != NULL)
+if (!panic_save_buffer)
+ if ((panic_save_buffer = US malloc(LOG_BUFFER_SIZE)))
memcpy(panic_save_buffer, log_buffer, LOG_BUFFER_SIZE);
- }
log_write(0, LOG_PANIC_DIE, "Cannot open %s log file \"%s\": %s: "
"euid=%d egid=%d", log_names[type], buffer, strerror(errno), euid, getegid());
}
+static void
+unlink_log(int type)
+{
+if (type == lt_debug) unlink(CS debuglog_name);
+}
+
+
/*************************************************
* Add configuration file info to log line *
}
if ((flags & (LOG_CONFIG_IN & ~LOG_CONFIG)) != 0)
- {
- sprintf(CS ptr, " in line %d of %s", config_lineno, config_filename);
- while (*ptr) ptr++;
- }
+ ptr += sprintf(CS ptr, " in line %d of %s", config_lineno, config_filename);
Ustrcpy(ptr, ":\n ");
return ptr + 4;
{
int save_errno = errno;
-if (panic_save_buffer == NULL)
- {
- panic_save_buffer = (uschar *)malloc(LOG_BUFFER_SIZE);
- if (panic_save_buffer != NULL)
+if (!panic_save_buffer)
+ if ((panic_save_buffer = US malloc(LOG_BUFFER_SIZE)))
memcpy(panic_save_buffer, log_buffer, LOG_BUFFER_SIZE);
- }
log_write(0, LOG_PANIC_DIE, "failed to write to %s: length=%d result=%d "
"errno=%d (%s)", name, length, rc, save_errno,
}
+void
+mainlog_close(void)
+{
+if (mainlogfd < 0) return;
+(void)close(mainlogfd);
+mainlogfd = -1;
+mainlog_inode = 0;
+}
/*************************************************
* Write message to log file *
denied.
Avoid actually writing to the logs when exim is called with -bv or -bt to
-test an address, but take other actions, such as panicing.
+test an address, but take other actions, such as panicking.
In Exim proper, the buffer for building the message is got at start-up, so that
nothing gets done if it can't be got. However, some functions that are also
void
log_write(unsigned int selector, int flags, const char *format, ...)
{
-uschar *ptr;
+uschar * ptr;
int length;
int paniclogfd;
ssize_t written_len;
/* Ensure we have a buffer (see comment above); this should never be obeyed
when running Exim proper, only when running utilities. */
-if (log_buffer == NULL)
- {
- log_buffer = (uschar *)malloc(LOG_BUFFER_SIZE);
- if (log_buffer == NULL)
+if (!log_buffer)
+ if (!(log_buffer = US malloc(LOG_BUFFER_SIZE)))
{
fprintf(stderr, "exim: failed to get store for log buffer\n");
exim_exit(EXIT_FAILURE);
}
- }
/* If we haven't already done so, inspect the setting of log_file_path to
determine whether to log to files and/or to syslog. Bits in logging_mode
for (i = 0; i < log_options_count; i++)
{
- unsigned int bit = log_options[i].bit;
- if (bit < BITWORDSIZE && selector == BIT(bit))
+ unsigned int bitnum = log_options[i].bit;
+ if (bitnum < BITWORDSIZE && selector == BIT(bitnum))
{
*ptr++ = ' ';
Ustrcpy(ptr, log_options[i].name);
when called by a utility. */
ptr = log_buffer;
-sprintf(CS ptr, "%s ", tod_stamp(tod_log));
-while(*ptr) ptr++;
+ptr += sprintf(CS ptr, "%s ", tod_stamp(tod_log));
if (LOGGING(pid))
{
- sprintf(CS ptr, "[%d] ", (int)getpid());
- while (*ptr) ptr++;
+ if (!syslog_pid) pid_position[0] = ptr - log_buffer; /* remember begin … */
+ ptr += sprintf(CS ptr, "[%d] ", (int)getpid());
+ if (!syslog_pid) pid_position[1] = ptr - log_buffer; /* … and end+1 of the PID */
}
if (really_exim && message_id[0] != 0)
- {
- sprintf(CS ptr, "%s ", message_id);
- while(*ptr) ptr++;
- }
+ ptr += sprintf(CS ptr, "%s ", message_id);
if ((flags & LOG_CONFIG) != 0) ptr = log_config_info(ptr, flags);
if ((flags & LOG_SENDER) != 0 &&
ptr < log_buffer + LOG_BUFFER_SIZE - 10 - Ustrlen(raw_sender))
- {
- sprintf(CS ptr, " from <%s>", raw_sender);
- while (*ptr) ptr++;
- }
+ ptr += sprintf(CS ptr, " from <%s>", raw_sender);
/* Add list of recipients to the message if required; the raw list,
before rewriting, was saved in raw_recipients. There may be none, if an ACL
raw_recipients_count > 0)
{
int i;
- sprintf(CS ptr, " for");
- while (*ptr) ptr++;
+ ptr += sprintf(CS ptr, " for");
for (i = 0; i < raw_recipients_count; i++)
{
- uschar *s = raw_recipients[i];
+ uschar * s = raw_recipients[i];
if (log_buffer + LOG_BUFFER_SIZE - ptr < Ustrlen(s) + 3) break;
- sprintf(CS ptr, " %s", s);
- while (*ptr) ptr++;
+ ptr += sprintf(CS ptr, " %s", s);
}
}
-sprintf(CS ptr, "\n");
-while(*ptr) ptr++;
+ptr += sprintf(CS ptr, "\n");
length = ptr - log_buffer;
/* Handle loggable errors when running a utility, or when address testing.
has been renamed. Therefore, do a stat() and see if the inode has changed, and
if so, re-open. */
-if ((flags & LOG_MAIN) != 0 &&
- (selector == 0 || (selector & log_selector[0]) != 0))
+if ( flags & LOG_MAIN
+ && (!selector || selector & log_selector[0]))
{
- if ((logging_mode & LOG_MODE_SYSLOG) != 0 &&
- (syslog_duplication || (flags & (LOG_REJECT|LOG_PANIC)) == 0))
+ if ( logging_mode & LOG_MODE_SYSLOG
+ && (syslog_duplication || !(flags & (LOG_REJECT|LOG_PANIC))))
write_syslog(LOG_INFO, log_buffer);
- if ((logging_mode & LOG_MODE_FILE) != 0)
+ if (logging_mode & LOG_MODE_FILE)
{
struct stat statbuf;
operation. This happens at midnight, at which point we want to roll over
the file. Closing it has the desired effect. */
- if (mainlog_datestamp != NULL)
+ if (mainlog_datestamp)
{
uschar *nowstamp = tod_stamp(string_datestamp_type);
if (Ustrncmp (mainlog_datestamp, nowstamp, Ustrlen(nowstamp)) != 0)
happening. */
if (mainlogfd >= 0)
- {
if (Ustat(mainlog_name, &statbuf) < 0 || statbuf.st_ino != mainlog_inode)
- {
- (void)close(mainlogfd);
- mainlogfd = -1;
- mainlog_inode = 0;
- }
- }
+ mainlog_close();
/* If the log is closed, open it. Then write the line. */
/* A header with a NULL text is an unfilled in Received: header */
- for (h = header_list; h != NULL; h = h->next)
+ for (h = header_list; h; h = h->next) if (h->text)
{
- BOOL fitted;
- if (h->text == NULL) continue;
- fitted = string_format(ptr, LOG_BUFFER_SIZE - (ptr-log_buffer),
+ BOOL fitted = string_format(ptr, LOG_BUFFER_SIZE - (ptr-log_buffer),
"%c %s", h->type, h->text);
while(*ptr) ptr++;
if (!fitted) /* Buffer is full; truncate */
{
struct stat statbuf;
- if (rejectlog_datestamp != NULL)
+ if (rejectlog_datestamp)
{
uschar *nowstamp = tod_stamp(string_datestamp_type);
if (Ustrncmp (rejectlog_datestamp, nowstamp, Ustrlen(nowstamp)) != 0)
fprintf(log_stderr, "%s", CS log_buffer);
if ((logging_mode & LOG_MODE_SYSLOG) != 0)
- {
write_syslog(LOG_ALERT, log_buffer);
- }
/* If this panic logging was caused by a failure to open the main log,
the original log line is in panic_save_buffer. Make an attempt to write it. */
if (debug_file)
{
debug_printf("DEBUGGING ACTIVATED FROM WITHIN CONFIG.\n"
- "DEBUG: Tag=\"%s\" Opts=\"%s\"\n", tag_name, opts ? opts : US"");
+ "DEBUG: Tag=\"%s\" opts=\"%s\"\n", tag_name, opts ? opts : US"");
return;
}
}
+void
+debug_logging_stop(void)
+{
+if (!debug_file || !debuglog_name[0]) return;
+
+debug_selector = 0;
+fclose(debug_file);
+debug_file = NULL;
+unlink_log(lt_debug);
+}
+
+
/* End of log.c */
git://git.exim.org / exim.git / blobdiff