crypto/bio/bss_log.c

   1 /*
   2  * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (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_lcl.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$routines.h>
  31 # include <starlet.h>
  32 /* Some compiler options may mask the declaration of "_malloc32". */
  33 # if __INITIAL_POINTER_SIZE && defined _ANSI_C_SOURCE
  34 #  if __INITIAL_POINTER_SIZE == 64
  35 #   pragma pointer_size save
  36 #   pragma pointer_size 32
  37 void *_malloc32(__size_t);
  38 #   pragma pointer_size restore
  39 #  endif                        /* __INITIAL_POINTER_SIZE == 64 */
  40 # endif                         /* __INITIAL_POINTER_SIZE && defined
  41                                  * _ANSI_C_SOURCE */
  42 #elif defined(OPENSSL_SYS_NETWARE)
  43 # define NO_SYSLOG
  44 #elif (!defined(MSDOS) || defined(WATT32)) && !defined(OPENSSL_SYS_VXWORKS) && !defined(NO_SYSLOG)
  45 # include <syslog.h>
  46 #endif
  47
  48 #include <openssl/buffer.h>
  49 #include <openssl/err.h>
  50
  51 #ifndef NO_SYSLOG
  52
  53 # if defined(OPENSSL_SYS_WIN32)
  54 #  define LOG_EMERG       0
  55 #  define LOG_ALERT       1
  56 #  define LOG_CRIT        2
  57 #  define LOG_ERR         3
  58 #  define LOG_WARNING     4
  59 #  define LOG_NOTICE      5
  60 #  define LOG_INFO        6
  61 #  define LOG_DEBUG       7
  62
  63 #  define LOG_DAEMON      (3<<3)
  64 # elif defined(OPENSSL_SYS_VMS)
  65 /* On VMS, we don't really care about these, but we need them to compile */
  66 #  define LOG_EMERG       0
  67 #  define LOG_ALERT       1
  68 #  define LOG_CRIT        2
  69 #  define LOG_ERR         3
  70 #  define LOG_WARNING     4
  71 #  define LOG_NOTICE      5
  72 #  define LOG_INFO        6
  73 #  define LOG_DEBUG       7
  74
  75 #  define LOG_DAEMON      OPC$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, "syslog",
  89     /* TODO: Convert to new style write function */
  90     bwrite_conv,
  91     slg_write,
  92     NULL,
  93     NULL,
  94     slg_puts,
  95     NULL,
  96     slg_ctrl,
  97     slg_new,
  98     slg_free,
  99     NULL,
 100 };
 101
 102 const BIO_METHOD *BIO_s_log(void)
 103 {
 104     return (&methods_slg);
 105 }
 106
 107 static int slg_new(BIO *bi)
 108 {
 109     bi->init = 1;
 110     bi->num = 0;
 111     bi->ptr = NULL;
 112     xopenlog(bi, "application", LOG_DAEMON);
 113     return (1);
 114 }
 115
 116 static int slg_free(BIO *a)
 117 {
 118     if (a == NULL)
 119         return (0);
 120     xcloselog(a);
 121     return (1);
 122 }
 123
 124 static int slg_write(BIO *b, const char *in, int inl)
 125 {
 126     int ret = inl;
 127     char *buf;
 128     char *pp;
 129     int priority, i;
 130     static const struct {
 131         int strl;
 132         char str[10];
 133         int log_level;
 134     } mapping[] = {
 135         {
 136             6, "PANIC ", LOG_EMERG
 137         },
 138         {
 139             6, "EMERG ", LOG_EMERG
 140         },
 141         {
 142             4, "EMR ", LOG_EMERG
 143         },
 144         {
 145             6, "ALERT ", LOG_ALERT
 146         },
 147         {
 148             4, "ALR ", LOG_ALERT
 149         },
 150         {
 151             5, "CRIT ", LOG_CRIT
 152         },
 153         {
 154             4, "CRI ", LOG_CRIT
 155         },
 156         {
 157             6, "ERROR ", LOG_ERR
 158         },
 159         {
 160             4, "ERR ", LOG_ERR
 161         },
 162         {
 163             8, "WARNING ", LOG_WARNING
 164         },
 165         {
 166             5, "WARN ", LOG_WARNING
 167         },
 168         {
 169             4, "WAR ", LOG_WARNING
 170         },
 171         {
 172             7, "NOTICE ", LOG_NOTICE
 173         },
 174         {
 175             5, "NOTE ", LOG_NOTICE
 176         },
 177         {
 178             4, "NOT ", LOG_NOTICE
 179         },
 180         {
 181             5, "INFO ", LOG_INFO
 182         },
 183         {
 184             4, "INF ", LOG_INFO
 185         },
 186         {
 187             6, "DEBUG ", LOG_DEBUG
 188         },
 189         {
 190             4, "DBG ", LOG_DEBUG
 191         },
 192         {
 193             0, "", LOG_ERR
 194         }
 195         /* The default */
 196     };
 197
 198     if ((buf = OPENSSL_malloc(inl + 1)) == NULL) {
 199         return (0);
 200     }
 201     strncpy(buf, in, inl);
 202     buf[inl] = '\0';
 203
 204     i = 0;
 205     while (strncmp(buf, mapping[i].str, mapping[i].strl) != 0)
 206         i++;
 207     priority = mapping[i].log_level;
 208     pp = buf + mapping[i].strl;
 209
 210     xsyslog(b, priority, pp);
 211
 212     OPENSSL_free(buf);
 213     return (ret);
 214 }
 215
 216 static long slg_ctrl(BIO *b, int cmd, long num, void *ptr)
 217 {
 218     switch (cmd) {
 219     case BIO_CTRL_SET:
 220         xcloselog(b);
 221         xopenlog(b, ptr, num);
 222         break;
 223     default:
 224         break;
 225     }
 226     return (0);
 227 }
 228
 229 static int slg_puts(BIO *bp, const char *str)
 230 {
 231     int n, ret;
 232
 233     n = strlen(str);
 234     ret = slg_write(bp, str, n);
 235     return (ret);
 236 }
 237
 238 # if defined(OPENSSL_SYS_WIN32)
 239
 240 static void xopenlog(BIO *bp, char *name, int level)
 241 {
 242     if (check_winnt())
 243         bp->ptr = RegisterEventSourceA(NULL, name);
 244     else
 245         bp->ptr = NULL;
 246 }
 247
 248 static void xsyslog(BIO *bp, int priority, const char *string)
 249 {
 250     LPCSTR lpszStrings[2];
 251     WORD evtype = EVENTLOG_ERROR_TYPE;
 252     char pidbuf[DECIMAL_SIZE(DWORD) + 4];
 253
 254     if (bp->ptr == NULL)
 255         return;
 256
 257     switch (priority) {
 258     case LOG_EMERG:
 259     case LOG_ALERT:
 260     case LOG_CRIT:
 261     case LOG_ERR:
 262         evtype = EVENTLOG_ERROR_TYPE;
 263         break;
 264     case LOG_WARNING:
 265         evtype = EVENTLOG_WARNING_TYPE;
 266         break;
 267     case LOG_NOTICE:
 268     case LOG_INFO:
 269     case LOG_DEBUG:
 270         evtype = EVENTLOG_INFORMATION_TYPE;
 271         break;
 272     default:
 273         /*
 274          * Should never happen, but set it
 275          * as error anyway.
 276          */
 277         evtype = EVENTLOG_ERROR_TYPE;
 278         break;
 279     }
 280
 281     sprintf(pidbuf, "[%lu] ", GetCurrentProcessId());
 282     lpszStrings[0] = pidbuf;
 283     lpszStrings[1] = string;
 284
 285     ReportEventA(bp->ptr, evtype, 0, 1024, NULL, 2, 0, lpszStrings, NULL);
 286 }
 287
 288 static void xcloselog(BIO *bp)
 289 {
 290     if (bp->ptr)
 291         DeregisterEventSource((HANDLE) (bp->ptr));
 292     bp->ptr = NULL;
 293 }
 294
 295 # elif defined(OPENSSL_SYS_VMS)
 296
 297 static int VMS_OPC_target = LOG_DAEMON;
 298
 299 static void xopenlog(BIO *bp, char *name, int level)
 300 {
 301     VMS_OPC_target = level;
 302 }
 303
 304 static void xsyslog(BIO *bp, int priority, const char *string)
 305 {
 306     struct dsc$descriptor_s opc_dsc;
 307
 308 /* Arrange 32-bit pointer to opcdef buffer and malloc(), if needed. */
 309 #  if __INITIAL_POINTER_SIZE == 64
 310 #   pragma pointer_size save
 311 #   pragma pointer_size 32
 312 #   define OPCDEF_TYPE __char_ptr32
 313 #   define OPCDEF_MALLOC _malloc32
 314 #  else                         /* __INITIAL_POINTER_SIZE == 64 */
 315 #   define OPCDEF_TYPE char *
 316 #   define OPCDEF_MALLOC OPENSSL_malloc
 317 #  endif                        /* __INITIAL_POINTER_SIZE == 64 [else] */
 318
 319     struct opcdef *opcdef_p;
 320
 321 #  if __INITIAL_POINTER_SIZE == 64
 322 #   pragma pointer_size restore
 323 #  endif                        /* __INITIAL_POINTER_SIZE == 64 */
 324
 325     char buf[10240];
 326     unsigned int len;
 327     struct dsc$descriptor_s buf_dsc;
 328     $DESCRIPTOR(fao_cmd, "!AZ: !AZ");
 329     char *priority_tag;
 330
 331     switch (priority) {
 332     case LOG_EMERG:
 333         priority_tag = "Emergency";
 334         break;
 335     case LOG_ALERT:
 336         priority_tag = "Alert";
 337         break;
 338     case LOG_CRIT:
 339         priority_tag = "Critical";
 340         break;
 341     case LOG_ERR:
 342         priority_tag = "Error";
 343         break;
 344     case LOG_WARNING:
 345         priority_tag = "Warning";
 346         break;
 347     case LOG_NOTICE:
 348         priority_tag = "Notice";
 349         break;
 350     case LOG_INFO:
 351         priority_tag = "Info";
 352         break;
 353     case LOG_DEBUG:
 354         priority_tag = "DEBUG";
 355         break;
 356     }
 357
 358     buf_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
 359     buf_dsc.dsc$b_class = DSC$K_CLASS_S;
 360     buf_dsc.dsc$a_pointer = buf;
 361     buf_dsc.dsc$w_length = sizeof(buf) - 1;
 362
 363     lib$sys_fao(&fao_cmd, &len, &buf_dsc, priority_tag, string);
 364
 365     /* We know there's an 8-byte header.  That's documented. */
 366     opcdef_p = OPCDEF_MALLOC(8 + len);
 367     opcdef_p->opc$b_ms_type = OPC$_RQ_RQST;
 368     memcpy(opcdef_p->opc$z_ms_target_classes, &VMS_OPC_target, 3);
 369     opcdef_p->opc$l_ms_rqstid = 0;
 370     memcpy(&opcdef_p->opc$l_ms_text, buf, len);
 371
 372     opc_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
 373     opc_dsc.dsc$b_class = DSC$K_CLASS_S;
 374     opc_dsc.dsc$a_pointer = (OPCDEF_TYPE) opcdef_p;
 375     opc_dsc.dsc$w_length = len + 8;
 376
 377     sys$sndopr(opc_dsc, 0);
 378
 379     OPENSSL_free(opcdef_p);
 380 }
 381
 382 static void xcloselog(BIO *bp)
 383 {
 384 }
 385
 386 # else                          /* Unix/Watt32 */
 387
 388 static void xopenlog(BIO *bp, char *name, int level)
 389 {
 390 #  ifdef WATT32                 /* djgpp/DOS */
 391     openlog(name, LOG_PID | LOG_CONS | LOG_NDELAY, level);
 392 #  else
 393     openlog(name, LOG_PID | LOG_CONS, level);
 394 #  endif
 395 }
 396
 397 static void xsyslog(BIO *bp, int priority, const char *string)
 398 {
 399     syslog(priority, "%s", string);
 400 }
 401
 402 static void xcloselog(BIO *bp)
 403 {
 404     closelog();
 405 }
 406
 407 # endif                         /* Unix */
 408
 409 #endif                          /* NO_SYSLOG */