contrib/file/src/print.c

   1 /*
   2  * Copyright (c) Ian F. Darwin 1986-1995.
   3  * Software written by Ian F. Darwin and others;
   4  * maintained 1995-present by Christos Zoulas and others.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice immediately at the beginning of the file, without modification,
  11  *    this list of conditions, and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  20  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28 /*
  29  * print.c - debugging printout routines
  30  */
  31
  32 #include "file.h"
  33 #include <stdio.h>
  34 #include <errno.h>
  35 #include <string.h>
  36 #include <stdarg.h>
  37 #include <stdlib.h>
  38 #ifdef HAVE_UNISTD_H
  39 #include <unistd.h>
  40 #endif
  41 #include <time.h>
  42
  43 #ifndef lint
  44 FILE_RCSID("@(#)$File: print.c,v 1.61 2007/12/27 16:35:59 christos Exp $")
  45 #endif  /* lint */
  46
  47 #define SZOF(a) (sizeof(a) / sizeof(a[0]))
  48
  49 #ifndef COMPILE_ONLY
  50 protected void
  51 file_mdump(struct magic *m)
  52 {
  53         private const char optyp[] = { FILE_OPS };
  54
  55         (void) fprintf(stderr, "[%u", m->lineno);
  56         (void) fprintf(stderr, ">>>>>>>> %u" + 8 - (m->cont_level & 7),
  57                        m->offset);
  58
  59         if (m->flag & INDIR) {
  60                 (void) fprintf(stderr, "(%s,",
  61                                /* Note: type is unsigned */
  62                                (m->in_type < file_nnames) ?
  63                                         file_names[m->in_type] : "*bad*");
  64                 if (m->in_op & FILE_OPINVERSE)
  65                         (void) fputc('~', stderr);
  66                 (void) fprintf(stderr, "%c%u),",
  67                                ((m->in_op & FILE_OPS_MASK) < SZOF(optyp)) ?
  68                                         optyp[m->in_op & FILE_OPS_MASK] : '?',
  69                                 m->in_offset);
  70         }
  71         (void) fprintf(stderr, " %s%s", (m->flag & UNSIGNED) ? "u" : "",
  72                        /* Note: type is unsigned */
  73                        (m->type < file_nnames) ? file_names[m->type] : "*bad*");
  74         if (m->mask_op & FILE_OPINVERSE)
  75                 (void) fputc('~', stderr);
  76
  77         if (IS_STRING(m->type)) {
  78                 if (m->str_flags) {
  79                         (void) fputc('/', stderr);
  80                         if (m->str_flags & STRING_COMPACT_BLANK)
  81                                 (void) fputc(CHAR_COMPACT_BLANK, stderr);
  82                         if (m->str_flags & STRING_COMPACT_OPTIONAL_BLANK)
  83                                 (void) fputc(CHAR_COMPACT_OPTIONAL_BLANK,
  84                                     stderr);
  85                         if (m->str_flags & STRING_IGNORE_LOWERCASE)
  86                                 (void) fputc(CHAR_IGNORE_LOWERCASE, stderr);
  87                         if (m->str_flags & STRING_IGNORE_UPPERCASE)
  88                                 (void) fputc(CHAR_IGNORE_UPPERCASE, stderr);
  89                         if (m->str_flags & REGEX_OFFSET_START)
  90                                 (void) fputc(CHAR_REGEX_OFFSET_START, stderr);
  91                 }
  92                 if (m->str_count)
  93                         (void) fprintf(stderr, "/%u", m->str_count);
  94         }
  95         else {
  96                 if ((m->mask_op & FILE_OPS_MASK) < SZOF(optyp))
  97                         (void) fputc(optyp[m->mask_op & FILE_OPS_MASK], stderr);
  98                 else
  99                         (void) fputc('?', stderr);
 100
 101                 if (m->num_mask) {
 102                         (void) fprintf(stderr, "%.8llx",
 103                             (unsigned long long)m->num_mask);
 104                 }
 105         }
 106         (void) fprintf(stderr, ",%c", m->reln);
 107
 108         if (m->reln != 'x') {
 109                 switch (m->type) {
 110                 case FILE_BYTE:
 111                 case FILE_SHORT:
 112                 case FILE_LONG:
 113                 case FILE_LESHORT:
 114                 case FILE_LELONG:
 115                 case FILE_MELONG:
 116                 case FILE_BESHORT:
 117                 case FILE_BELONG:
 118                         (void) fprintf(stderr, "%d", m->value.l);
 119                         break;
 120                 case FILE_BEQUAD:
 121                 case FILE_LEQUAD:
 122                 case FILE_QUAD:
 123                         (void) fprintf(stderr, "%lld",
 124                             (unsigned long long)m->value.q);
 125                         break;
 126                 case FILE_PSTRING:
 127                 case FILE_STRING:
 128                 case FILE_REGEX:
 129                 case FILE_BESTRING16:
 130                 case FILE_LESTRING16:
 131                 case FILE_SEARCH:
 132                         file_showstr(stderr, m->value.s, (size_t)m->vallen);
 133                         break;
 134                 case FILE_DATE:
 135                 case FILE_LEDATE:
 136                 case FILE_BEDATE:
 137                 case FILE_MEDATE:
 138                         (void)fprintf(stderr, "%s,",
 139                             file_fmttime(m->value.l, 1));
 140                         break;
 141                 case FILE_LDATE:
 142                 case FILE_LELDATE:
 143                 case FILE_BELDATE:
 144                 case FILE_MELDATE:
 145                         (void)fprintf(stderr, "%s,",
 146                             file_fmttime(m->value.l, 0));
 147                         break;
 148                 case FILE_QDATE:
 149                 case FILE_LEQDATE:
 150                 case FILE_BEQDATE:
 151                         (void)fprintf(stderr, "%s,",
 152                             file_fmttime((uint32_t)m->value.q, 1));
 153                         break;
 154                 case FILE_QLDATE:
 155                 case FILE_LEQLDATE:
 156                 case FILE_BEQLDATE:
 157                         (void)fprintf(stderr, "%s,",
 158                             file_fmttime((uint32_t)m->value.q, 0));
 159                         break;
 160                 case FILE_FLOAT:
 161                 case FILE_BEFLOAT:
 162                 case FILE_LEFLOAT:
 163                         (void) fprintf(stderr, "%G", m->value.f);
 164                         break;
 165                 case FILE_DOUBLE:
 166                 case FILE_BEDOUBLE:
 167                 case FILE_LEDOUBLE:
 168                         (void) fprintf(stderr, "%G", m->value.d);
 169                         break;
 170                 case FILE_DEFAULT:
 171                         /* XXX - do anything here? */
 172                         break;
 173                 default:
 174                         (void) fputs("*bad*", stderr);
 175                         break;
 176                 }
 177         }
 178         (void) fprintf(stderr, ",\"%s\"]\n", m->desc);
 179 }
 180 #endif
 181
 182 /*VARARGS*/
 183 protected void
 184 file_magwarn(struct magic_set *ms, const char *f, ...)
 185 {
 186         va_list va;
 187         va_start(va, f);
 188
 189         /* cuz we use stdout for most, stderr here */
 190         (void) fflush(stdout);
 191
 192         (void) fprintf(stderr, "%s, %lu: Warning ", ms->file,
 193             (unsigned long)ms->line);
 194         (void) vfprintf(stderr, f, va);
 195         va_end(va);
 196         (void) fputc('\n', stderr);
 197 }
 198
 199 protected const char *
 200 file_fmttime(uint32_t v, int local)
 201 {
 202         char *pp;
 203         time_t t = (time_t)v;
 204         struct tm *tm;
 205
 206         if (local) {
 207                 pp = ctime(&t);
 208         } else {
 209 #ifndef HAVE_DAYLIGHT
 210                 private int daylight = 0;
 211 #ifdef HAVE_TM_ISDST
 212                 private time_t now = (time_t)0;
 213
 214                 if (now == (time_t)0) {
 215                         struct tm *tm1;
 216                         (void)time(&now);
 217                         tm1 = localtime(&now);
 218                         if (tm1 == NULL)
 219                                 return "*Invalid time*";
 220                         daylight = tm1->tm_isdst;
 221                 }
 222 #endif /* HAVE_TM_ISDST */
 223 #endif /* HAVE_DAYLIGHT */
 224                 if (daylight)
 225                         t += 3600;
 226                 tm = gmtime(&t);
 227                 if (tm == NULL)
 228                         return "*Invalid time*";
 229                 pp = asctime(tm);
 230         }
 231
 232         pp[strcspn(pp, "\n")] = '\0';
 233         return pp;
 234 }