crypto/bio/bss_log.c

   1 /*
   2  * Copyright 1999-2018 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 /*
  11  * Why BIO_s_log?
  12  *
  13  * BIO_s_log is useful for system daemons (or services under NT). It is
  14  * one-way BIO, it sends all stuff to syslogd (on system that commonly use
  15  * that), or event log (on NT), or OPCOM (on OpenVMS).
  16  *
  17  */
  18
  19 #include <stdio.h>
  20 #include <errno.h>
  21
  22 #include "bio_local.h"
  23 #include "internal/cryptlib.h"
  24
  25 #if defined(OPENSSL_SYS_WINCE)
  26 #elif defined(OPENSSL_SYS_WIN32)
  27 #elif defined(OPENSSL_SYS_VMS)
  28 # include <opcdef.h>
  29 # include <descrip.h>
  30 # include <lib$routines.h>
  31 # include <starlet.h>
  32 /* Some compiler options may mask the declaration of "_malloc32". */
  33 # if __INITIAL_POINTER_SIZE && defined _ANSI_C_SOURCE
  34 #  if __INITIAL_POINTER_SIZE == 64
  35 #   pragma pointer_size save
  36 #   pragma pointer_size 32
  37 void *_malloc32(__size_t);
  38 #   pragma pointer_size restore
  39 #  endif                        /* __INITIAL_POINTER_SIZE == 64 */
  40 # endif                         /* __INITIAL_POINTER_SIZE && defined
  41                                  * _ANSI_C_SOURCE */
  42 #elif defined(__DJGPP__) && defined(OPENSSL_NO_SOCK)
  43 # define NO_SYSLOG
  44 #elif (!defined(MSDOS) || defined(WATT32)) && !defined(OPENSSL_SYS_VXWORKS) && !defined(NO_SYSLOG)
  45 # include <syslog.h>
  46 #endif
  47
  48 #include <openssl/buffer.h>
  49 #include <openssl/err.h>
  50
  51 #ifndef NO_SYSLOG
  52
  53 # if defined(OPENSSL_SYS_WIN32)
  54 #  define LOG_EMERG       0
  55 #  define LOG_ALERT       1
  56 #  define LOG_CRIT        2
  57 #  define LOG_ERR         3
  58 #  define LOG_WARNING     4
  59 #  define LOG_NOTICE      5
  60 #  define LOG_INFO        6
  61 #  define LOG_DEBUG       7
  62
  63 #  define LOG_DAEMON      (3<<3)
  64 # elif defined(OPENSSL_SYS_VMS)
  65 /* On VMS, we don't really care about these, but we need them to compile */
  66 #  define LOG_EMERG       0
  67 #  define LOG_ALERT       1
  68 #  define LOG_CRIT        2
  69 #  define LOG_ERR         3
  70 #  define LOG_WARNING     4
  71 #  define LOG_NOTICE      5
  72 #  define LOG_INFO        6
  73 #  define LOG_DEBUG       7
  74
  75 #  define LOG_DAEMON      OPC$M_NM_NTWORK
  76 # endif
  77
  78 static int slg_write(BIO *h, const char *buf, int num);
  79 static int slg_puts(BIO *h, const char *str);
  80 static long slg_ctrl(BIO *h, int cmd, long arg1, void *arg2);
  81 static int slg_new(BIO *h);
  82 static int slg_free(BIO *data);
  83 static void xopenlog(BIO *bp, char *name, int level);
  84 static void xsyslog(BIO *bp, int priority, const char *string);
  85 static void xcloselog(BIO *bp);
  86
  87 static const BIO_METHOD methods_slg = {
  88     BIO_TYPE_MEM,
  89     "syslog",
  90     /* TODO: Convert to new style write function */
  91     bwrite_conv,
  92     slg_write,
  93     NULL,                      /* slg_write_old,    */
  94     NULL,                      /* slg_read,         */
  95     slg_puts,
  96     NULL,
  97     slg_ctrl,
  98     slg_new,
  99     slg_free,
 100     NULL,                      /* slg_callback_ctrl */
 101 };
 102
 103 const BIO_METHOD *BIO_s_log(void)
 104 {
 105     return &methods_slg;
 106 }
 107
 108 static int slg_new(BIO *bi)
 109 {
 110     bi->init = 1;
 111     bi->num = 0;
 112     bi->ptr = NULL;
 113     xopenlog(bi, "application", LOG_DAEMON);
 114     return 1;
 115 }
 116
 117 static int slg_free(BIO *a)
 118 {
 119     if (a == NULL)
 120         return 0;
 121     xcloselog(a);
 122     return 1;
 123 }
 124
 125 static int slg_write(BIO *b, const char *in, int inl)
 126 {
 127     int ret = inl;
 128     char *buf;
 129     char *pp;
 130     int priority, i;
 131     static const struct {
 132         int strl;
 133         char str[10];
 134         int log_level;
 135     } mapping[] = {
 136         {
 137             6, "PANIC ", LOG_EMERG
 138         },
 139         {
 140             6, "EMERG ", LOG_EMERG
 141         },
 142         {
 143             4, "EMR ", LOG_EMERG
 144         },
 145         {
 146             6, "ALERT ", LOG_ALERT
 147         },
 148         {
 149             4, "ALR ", LOG_ALERT
 150         },
 151         {
 152             5, "CRIT ", LOG_CRIT
 153         },
 154         {
 155             4, "CRI ", LOG_CRIT
 156         },
 157         {
 158             6, "ERROR ", LOG_ERR
 159         },
 160         {
 161             4, "ERR ", LOG_ERR
 162         },
 163         {
 164             8, "WARNING ", LOG_WARNING
 165         },
 166         {
 167             5, "WARN ", LOG_WARNING
 168         },
 169         {
 170             4, "WAR ", LOG_WARNING
 171         },
 172         {
 173             7, "NOTICE ", LOG_NOTICE
 174         },
 175         {
 176             5, "NOTE ", LOG_NOTICE
 177         },
 178         {
 179             4, "NOT ", LOG_NOTICE
 180         },
 181         {
 182             5, "INFO ", LOG_INFO
 183         },
 184         {
 185             4, "INF ", LOG_INFO
 186         },
 187         {
 188             6, "DEBUG ", LOG_DEBUG
 189         },
 190         {
 191             4, "DBG ", LOG_DEBUG
 192         },
 193         {
 194             0, "", LOG_ERR
 195         }
 196         /* The default */
 197     };
 198
 199     if ((buf = OPENSSL_malloc(inl + 1)) == NULL) {
 200         ERR_raise(ERR_LIB_BIO, ERR_R_MALLOC_FAILURE);
 201         return 0;
 202     }
 203     memcpy(buf, in, inl);
 204     buf[inl] = '\0';
 205
 206     i = 0;
 207     while (strncmp(buf, mapping[i].str, mapping[i].strl) != 0)
 208         i++;
 209     priority = mapping[i].log_level;
 210     pp = buf + mapping[i].strl;
 211
 212     xsyslog(b, priority, pp);
 213
 214     OPENSSL_free(buf);
 215     return ret;
 216 }
 217
 218 static long slg_ctrl(BIO *b, int cmd, long num, void *ptr)
 219 {
 220     switch (cmd) {
 221     case BIO_CTRL_SET:
 222         xcloselog(b);
 223         xopenlog(b, ptr, num);
 224         break;
 225     default:
 226         break;
 227     }
 228     return 0;
 229 }
 230
 231 static int slg_puts(BIO *bp, const char *str)
 232 {
 233     int n, ret;
 234
 235     n = strlen(str);
 236     ret = slg_write(bp, str, n);
 237     return ret;
 238 }
 239
 240 # if defined(OPENSSL_SYS_WIN32)
 241
 242 static void xopenlog(BIO *bp, char *name, int level)
 243 {
 244     if (check_winnt())
 245         bp->ptr = RegisterEventSourceA(NULL, name);
 246     else
 247         bp->ptr = NULL;
 248 }
 249
 250 static void xsyslog(BIO *bp, int priority, const char *string)
 251 {
 252     LPCSTR lpszStrings[2];
 253     WORD evtype = EVENTLOG_ERROR_TYPE;
 254     char pidbuf[DECIMAL_SIZE(DWORD) + 4];
 255
 256     if (bp->ptr == NULL)
 257         return;
 258
 259     switch (priority) {
 260     case LOG_EMERG:
 261     case LOG_ALERT:
 262     case LOG_CRIT:
 263     case LOG_ERR:
 264         evtype = EVENTLOG_ERROR_TYPE;
 265         break;
 266     case LOG_WARNING:
 267         evtype = EVENTLOG_WARNING_TYPE;
 268         break;
 269     case LOG_NOTICE:
 270     case LOG_INFO:
 271     case LOG_DEBUG:
 272         evtype = EVENTLOG_INFORMATION_TYPE;
 273         break;
 274     default:
 275         /*
 276          * Should never happen, but set it
 277          * as error anyway.
 278          */
 279         evtype = EVENTLOG_ERROR_TYPE;
 280         break;
 281     }
 282
 283     sprintf(pidbuf, "[%lu] ", GetCurrentProcessId());
 284     lpszStrings[0] = pidbuf;
 285     lpszStrings[1] = string;
 286
 287     ReportEventA(bp->ptr, evtype, 0, 1024, NULL, 2, 0, lpszStrings, NULL);
 288 }
 289
 290 static void xcloselog(BIO *bp)
 291 {
 292     if (bp->ptr)
 293         DeregisterEventSource((HANDLE) (bp->ptr));
 294     bp->ptr = NULL;
 295 }
 296
 297 # elif defined(OPENSSL_SYS_VMS)
 298
 299 static int VMS_OPC_target = LOG_DAEMON;
 300
 301 static void xopenlog(BIO *bp, char *name, int level)
 302 {
 303     VMS_OPC_target = level;
 304 }
 305
 306 static void xsyslog(BIO *bp, int priority, const char *string)
 307 {
 308     struct dsc$descriptor_s opc_dsc;
 309
 310 /* Arrange 32-bit pointer to opcdef buffer and malloc(), if needed. */
 311 #  if __INITIAL_POINTER_SIZE == 64
 312 #   pragma pointer_size save
 313 #   pragma pointer_size 32
 314 #   define OPCDEF_TYPE __char_ptr32
 315 #   define OPCDEF_MALLOC _malloc32
 316 #  else                         /* __INITIAL_POINTER_SIZE == 64 */
 317 #   define OPCDEF_TYPE char *
 318 #   define OPCDEF_MALLOC OPENSSL_malloc
 319 #  endif                        /* __INITIAL_POINTER_SIZE == 64 [else] */
 320
 321     struct opcdef *opcdef_p;
 322
 323 #  if __INITIAL_POINTER_SIZE == 64
 324 #   pragma pointer_size restore
 325 #  endif                        /* __INITIAL_POINTER_SIZE == 64 */
 326
 327     char buf[10240];
 328     unsigned int len;
 329     struct dsc$descriptor_s buf_dsc;
 330     $DESCRIPTOR(fao_cmd, "!AZ: !AZ");
 331     char *priority_tag;
 332
 333     switch (priority) {
 334     case LOG_EMERG:
 335         priority_tag = "Emergency";
 336         break;
 337     case LOG_ALERT:
 338         priority_tag = "Alert";
 339         break;
 340     case LOG_CRIT:
 341         priority_tag = "Critical";
 342         break;
 343     case LOG_ERR:
 344         priority_tag = "Error";
 345         break;
 346     case LOG_WARNING:
 347         priority_tag = "Warning";
 348         break;
 349     case LOG_NOTICE:
 350         priority_tag = "Notice";
 351         break;
 352     case LOG_INFO:
 353         priority_tag = "Info";
 354         break;
 355     case LOG_DEBUG:
 356         priority_tag = "DEBUG";
 357         break;
 358     }
 359
 360     buf_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
 361     buf_dsc.dsc$b_class = DSC$K_CLASS_S;
 362     buf_dsc.dsc$a_pointer = buf;
 363     buf_dsc.dsc$w_length = sizeof(buf) - 1;
 364
 365     lib$sys_fao(&fao_cmd, &len, &buf_dsc, priority_tag, string);
 366
 367     /* We know there's an 8-byte header.  That's documented. */
 368     opcdef_p = OPCDEF_MALLOC(8 + len);
 369     opcdef_p->opc$b_ms_type = OPC$_RQ_RQST;
 370     memcpy(opcdef_p->opc$z_ms_target_classes, &VMS_OPC_target, 3);
 371     opcdef_p->opc$l_ms_rqstid = 0;
 372     memcpy(&opcdef_p->opc$l_ms_text, buf, len);
 373
 374     opc_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
 375     opc_dsc.dsc$b_class = DSC$K_CLASS_S;
 376     opc_dsc.dsc$a_pointer = (OPCDEF_TYPE) opcdef_p;
 377     opc_dsc.dsc$w_length = len + 8;
 378
 379     sys$sndopr(opc_dsc, 0);
 380
 381     OPENSSL_free(opcdef_p);
 382 }
 383
 384 static void xcloselog(BIO *bp)
 385 {
 386 }
 387
 388 # else                          /* Unix/Watt32 */
 389
 390 static void xopenlog(BIO *bp, char *name, int level)
 391 {
 392 #  ifdef WATT32                 /* djgpp/DOS */
 393     openlog(name, LOG_PID | LOG_CONS | LOG_NDELAY, level);
 394 #  else
 395     openlog(name, LOG_PID | LOG_CONS, level);
 396 #  endif
 397 }
 398
 399 static void xsyslog(BIO *bp, int priority, const char *string)
 400 {
 401     syslog(priority, "%s", string);
 402 }
 403
 404 static void xcloselog(BIO *bp)
 405 {
 406     closelog();
 407 }
 408
 409 # endif                         /* Unix */
 410
 411 #else                           /* NO_SYSLOG */
 412 const BIO_METHOD *BIO_s_log(void)
 413 {
 414     return NULL;
 415 }
 416 #endif                          /* NO_SYSLOG */