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openssl/crypto/bio/bss_log.c

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/*
* Copyright 1999-2018 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
/*
* Why BIO_s_log?
*
* BIO_s_log is useful for system daemons (or services under NT). It is
* one-way BIO, it sends all stuff to syslogd (on system that commonly use
* that), or event log (on NT), or OPCOM (on OpenVMS).
*
*/
#include <stdio.h>
#include <errno.h>
#include "bio_local.h"
#include "internal/cryptlib.h"
#if defined(OPENSSL_SYS_WINCE)
#elif defined(OPENSSL_SYS_WIN32)
#elif defined(OPENSSL_SYS_VMS)
# include <opcdef.h>
# include <descrip.h>
# include <lib$routines.h>
# include <starlet.h>
/* Some compiler options may mask the declaration of "_malloc32". */
# if __INITIAL_POINTER_SIZE && defined _ANSI_C_SOURCE
# if __INITIAL_POINTER_SIZE == 64
# pragma pointer_size save
# pragma pointer_size 32
void *_malloc32(__size_t);
# pragma pointer_size restore
# endif /* __INITIAL_POINTER_SIZE == 64 */
# endif /* __INITIAL_POINTER_SIZE && defined
* _ANSI_C_SOURCE */
#elif defined(__DJGPP__) && defined(OPENSSL_NO_SOCK)
# define NO_SYSLOG
#elif (!defined(MSDOS) || defined(WATT32)) && !defined(OPENSSL_SYS_VXWORKS) && !defined(NO_SYSLOG)
# include <syslog.h>
#endif
#include <openssl/buffer.h>
#include <openssl/err.h>
#ifndef NO_SYSLOG
# if defined(OPENSSL_SYS_WIN32)
# define LOG_EMERG 0
# define LOG_ALERT 1
# define LOG_CRIT 2
# define LOG_ERR 3
# define LOG_WARNING 4
# define LOG_NOTICE 5
# define LOG_INFO 6
# define LOG_DEBUG 7
# define LOG_DAEMON (3<<3)
# elif defined(OPENSSL_SYS_VMS)
/* On VMS, we don't really care about these, but we need them to compile */
# define LOG_EMERG 0
# define LOG_ALERT 1
# define LOG_CRIT 2
# define LOG_ERR 3
# define LOG_WARNING 4
# define LOG_NOTICE 5
# define LOG_INFO 6
# define LOG_DEBUG 7
# define LOG_DAEMON OPC$M_NM_NTWORK
# endif
static int slg_write(BIO *h, const char *buf, int num);
static int slg_puts(BIO *h, const char *str);
static long slg_ctrl(BIO *h, int cmd, long arg1, void *arg2);
static int slg_new(BIO *h);
static int slg_free(BIO *data);
static void xopenlog(BIO *bp, char *name, int level);
static void xsyslog(BIO *bp, int priority, const char *string);
static void xcloselog(BIO *bp);
static const BIO_METHOD methods_slg = {
BIO_TYPE_MEM,
"syslog",
/* TODO: Convert to new style write function */
bwrite_conv,
slg_write,
NULL, /* slg_write_old, */
NULL, /* slg_read, */
slg_puts,
NULL,
slg_ctrl,
slg_new,
slg_free,
NULL, /* slg_callback_ctrl */
};
const BIO_METHOD *BIO_s_log(void)
{
return &methods_slg;
}
static int slg_new(BIO *bi)
{
bi->init = 1;
bi->num = 0;
bi->ptr = NULL;
xopenlog(bi, "application", LOG_DAEMON);
return 1;
}
static int slg_free(BIO *a)
{
if (a == NULL)
return 0;
xcloselog(a);
return 1;
}
static int slg_write(BIO *b, const char *in, int inl)
{
int ret = inl;
char *buf;
char *pp;
int priority, i;
static const struct {
int strl;
char str[10];
int log_level;
} mapping[] = {
{
6, "PANIC ", LOG_EMERG
},
{
6, "EMERG ", LOG_EMERG
},
{
4, "EMR ", LOG_EMERG
},
{
6, "ALERT ", LOG_ALERT
},
{
4, "ALR ", LOG_ALERT
},
{
5, "CRIT ", LOG_CRIT
},
{
4, "CRI ", LOG_CRIT
},
{
6, "ERROR ", LOG_ERR
},
{
4, "ERR ", LOG_ERR
},
{
8, "WARNING ", LOG_WARNING
},
{
5, "WARN ", LOG_WARNING
},
{
4, "WAR ", LOG_WARNING
},
{
7, "NOTICE ", LOG_NOTICE
},
{
5, "NOTE ", LOG_NOTICE
},
{
4, "NOT ", LOG_NOTICE
},
{
5, "INFO ", LOG_INFO
},
{
4, "INF ", LOG_INFO
},
{
6, "DEBUG ", LOG_DEBUG
},
{
4, "DBG ", LOG_DEBUG
},
{
0, "", LOG_ERR
}
/* The default */
};
if ((buf = OPENSSL_malloc(inl + 1)) == NULL) {
BIOerr(BIO_F_SLG_WRITE, ERR_R_MALLOC_FAILURE);
return 0;
}
memcpy(buf, in, inl);
buf[inl] = '\0';
i = 0;
while (strncmp(buf, mapping[i].str, mapping[i].strl) != 0)
i++;
priority = mapping[i].log_level;
pp = buf + mapping[i].strl;
xsyslog(b, priority, pp);
OPENSSL_free(buf);
return ret;
}
static long slg_ctrl(BIO *b, int cmd, long num, void *ptr)
{
switch (cmd) {
case BIO_CTRL_SET:
xcloselog(b);
xopenlog(b, ptr, num);
break;
default:
break;
}
return 0;
}
static int slg_puts(BIO *bp, const char *str)
{
int n, ret;
n = strlen(str);
ret = slg_write(bp, str, n);
return ret;
}
# if defined(OPENSSL_SYS_WIN32)
static void xopenlog(BIO *bp, char *name, int level)
{
if (check_winnt())
bp->ptr = RegisterEventSourceA(NULL, name);
else
bp->ptr = NULL;
}
static void xsyslog(BIO *bp, int priority, const char *string)
{
LPCSTR lpszStrings[2];
WORD evtype = EVENTLOG_ERROR_TYPE;
char pidbuf[DECIMAL_SIZE(DWORD) + 4];
if (bp->ptr == NULL)
return;
switch (priority) {
case LOG_EMERG:
case LOG_ALERT:
case LOG_CRIT:
case LOG_ERR:
evtype = EVENTLOG_ERROR_TYPE;
break;
case LOG_WARNING:
evtype = EVENTLOG_WARNING_TYPE;
break;
case LOG_NOTICE:
case LOG_INFO:
case LOG_DEBUG:
evtype = EVENTLOG_INFORMATION_TYPE;
break;
default:
/*
* Should never happen, but set it
* as error anyway.
*/
evtype = EVENTLOG_ERROR_TYPE;
break;
}
sprintf(pidbuf, "[%lu] ", GetCurrentProcessId());
lpszStrings[0] = pidbuf;
lpszStrings[1] = string;
ReportEventA(bp->ptr, evtype, 0, 1024, NULL, 2, 0, lpszStrings, NULL);
}
static void xcloselog(BIO *bp)
{
if (bp->ptr)
DeregisterEventSource((HANDLE) (bp->ptr));
bp->ptr = NULL;
}
# elif defined(OPENSSL_SYS_VMS)
static int VMS_OPC_target = LOG_DAEMON;
static void xopenlog(BIO *bp, char *name, int level)
{
VMS_OPC_target = level;
}
static void xsyslog(BIO *bp, int priority, const char *string)
{
struct dsc$descriptor_s opc_dsc;
/* Arrange 32-bit pointer to opcdef buffer and malloc(), if needed. */
# if __INITIAL_POINTER_SIZE == 64
# pragma pointer_size save
# pragma pointer_size 32
# define OPCDEF_TYPE __char_ptr32
# define OPCDEF_MALLOC _malloc32
# else /* __INITIAL_POINTER_SIZE == 64 */
# define OPCDEF_TYPE char *
# define OPCDEF_MALLOC OPENSSL_malloc
# endif /* __INITIAL_POINTER_SIZE == 64 [else] */
struct opcdef *opcdef_p;
# if __INITIAL_POINTER_SIZE == 64
# pragma pointer_size restore
# endif /* __INITIAL_POINTER_SIZE == 64 */
char buf[10240];
unsigned int len;
struct dsc$descriptor_s buf_dsc;
$DESCRIPTOR(fao_cmd, "!AZ: !AZ");
char *priority_tag;
switch (priority) {
case LOG_EMERG:
priority_tag = "Emergency";
break;
case LOG_ALERT:
priority_tag = "Alert";
break;
case LOG_CRIT:
priority_tag = "Critical";
break;
case LOG_ERR:
priority_tag = "Error";
break;
case LOG_WARNING:
priority_tag = "Warning";
break;
case LOG_NOTICE:
priority_tag = "Notice";
break;
case LOG_INFO:
priority_tag = "Info";
break;
case LOG_DEBUG:
priority_tag = "DEBUG";
break;
}
buf_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
buf_dsc.dsc$b_class = DSC$K_CLASS_S;
buf_dsc.dsc$a_pointer = buf;
buf_dsc.dsc$w_length = sizeof(buf) - 1;
lib$sys_fao(&fao_cmd, &len, &buf_dsc, priority_tag, string);
/* We know there's an 8-byte header. That's documented. */
opcdef_p = OPCDEF_MALLOC(8 + len);
opcdef_p->opc$b_ms_type = OPC$_RQ_RQST;
memcpy(opcdef_p->opc$z_ms_target_classes, &VMS_OPC_target, 3);
opcdef_p->opc$l_ms_rqstid = 0;
memcpy(&opcdef_p->opc$l_ms_text, buf, len);
opc_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
opc_dsc.dsc$b_class = DSC$K_CLASS_S;
opc_dsc.dsc$a_pointer = (OPCDEF_TYPE) opcdef_p;
opc_dsc.dsc$w_length = len + 8;
sys$sndopr(opc_dsc, 0);
OPENSSL_free(opcdef_p);
}
static void xcloselog(BIO *bp)
{
}
# else /* Unix/Watt32 */
static void xopenlog(BIO *bp, char *name, int level)
{
# ifdef WATT32 /* djgpp/DOS */
openlog(name, LOG_PID | LOG_CONS | LOG_NDELAY, level);
# else
openlog(name, LOG_PID | LOG_CONS, level);
# endif
}
static void xsyslog(BIO *bp, int priority, const char *string)
{
syslog(priority, "%s", string);
}
static void xcloselog(BIO *bp)
{
closelog();
}
# endif /* Unix */
#else /* NO_SYSLOG */
const BIO_METHOD *BIO_s_log(void)
{
return NULL;
}
#endif /* NO_SYSLOG */
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