file/src/print.c

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/*
 * Copyright (c) Ian F. Darwin 1986-1995.
 * Software written by Ian F. Darwin and others;
 * maintained 1995-present by Christos Zoulas and others.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice immediately at the beginning of the file, without modification,
 *    this list of conditions, and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *  
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */
/*
 * print.c - debugging printout routines
 */

#include "file.h"
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <stdarg.h>
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <time.h>

#ifndef lint
FILE_RCSID("@(#)$File: print.c,v 1.58 2007/01/16 14:58:48 ljt Exp $")
#endif  /* lint */

#define SZOF(a) (sizeof(a) / sizeof(a[0]))

#ifndef COMPILE_ONLY
protected void
file_mdump(struct magic *m)
{
        private const char optyp[] = { FILE_OPS };

        (void) fprintf(stderr, "[%zu", m->lineno);
        (void) fprintf(stderr, ">>>>>>>> %d" + 8 - (m->cont_level & 7),
                       m->offset);

        if (m->flag & INDIR) {
                (void) fprintf(stderr, "(%s,",
                               /* Note: type is unsigned */
                               (m->in_type < file_nnames) ? 
                                        file_names[m->in_type] : "*bad*");
                if (m->in_op & FILE_OPINVERSE)
                        (void) fputc('~', stderr);
                (void) fprintf(stderr, "%c%d),",
                               ((m->in_op & FILE_OPS_MASK) < SZOF(optyp)) ? 
                                        optyp[m->in_op & FILE_OPS_MASK] : '?',
                                m->in_offset);
        }
        (void) fprintf(stderr, " %s%s", (m->flag & UNSIGNED) ? "u" : "",
                       /* Note: type is unsigned */
                       (m->type < file_nnames) ? file_names[m->type] : "*bad*");
        if (m->mask_op & FILE_OPINVERSE)
                (void) fputc('~', stderr);

        if (IS_STRING(m->type)) {
                if (m->str_flags) {
                        (void) fputc('/', stderr);
                        if (m->str_flags & STRING_COMPACT_BLANK) 
                                (void) fputc(CHAR_COMPACT_BLANK, stderr);
                        if (m->str_flags & STRING_COMPACT_OPTIONAL_BLANK) 
                                (void) fputc(CHAR_COMPACT_OPTIONAL_BLANK,
                                stderr);
                        if (m->str_flags & STRING_IGNORE_LOWERCASE) 
                                (void) fputc(CHAR_IGNORE_LOWERCASE, stderr);
                        if (m->str_flags & STRING_IGNORE_UPPERCASE) 
                                (void) fputc(CHAR_IGNORE_UPPERCASE, stderr);
                        if (m->str_flags & REGEX_OFFSET_START) 
                                (void) fputc(CHAR_REGEX_OFFSET_START, stderr);
                }
                if (m->str_count)
                        (void) fprintf(stderr, "/%u", m->str_count);
        }
        else {
                if ((m->mask_op & FILE_OPS_MASK) < SZOF(optyp))
                        (void) fputc(optyp[m->mask_op & FILE_OPS_MASK], stderr);
                else
                        (void) fputc('?', stderr);

                if (m->num_mask) {
                        (void) fprintf(stderr, "%.8llx",
                            (unsigned long long)m->num_mask);
                }
        }
        (void) fprintf(stderr, ",%c", m->reln);

        if (m->reln != 'x') {
                switch (m->type) {
                case FILE_BYTE:
                case FILE_SHORT:
                case FILE_LONG:
                case FILE_LESHORT:
                case FILE_LELONG:
                case FILE_MELONG:
                case FILE_BESHORT:
                case FILE_BELONG:
                        (void) fprintf(stderr, "%d", m->value.l);
                        break;
                case FILE_BEQUAD:
                case FILE_LEQUAD:
                case FILE_QUAD:
                        (void) fprintf(stderr, "%lld",
                            (unsigned long long)m->value.q);
                        break;
                case FILE_PSTRING:
                case FILE_STRING:
                case FILE_REGEX:
                case FILE_BESTRING16:
                case FILE_LESTRING16:
                case FILE_SEARCH:
                        file_showstr(stderr, m->value.s, (size_t)m->vallen);
                        break;
                case FILE_DATE:
                case FILE_LEDATE:
                case FILE_BEDATE:
                case FILE_MEDATE:
                        (void)fprintf(stderr, "%s,",
                            file_fmttime(m->value.l, 1));
                        break;
                case FILE_LDATE:
                case FILE_LELDATE:
                case FILE_BELDATE:
                case FILE_MELDATE:
                        (void)fprintf(stderr, "%s,",
                            file_fmttime(m->value.l, 0));
                        break;
                case FILE_QDATE:
                case FILE_LEQDATE:
                case FILE_BEQDATE:
                        (void)fprintf(stderr, "%s,",
                            file_fmttime((uint32_t)m->value.q, 1));
                        break;
                case FILE_QLDATE:
                case FILE_LEQLDATE:
                case FILE_BEQLDATE:
                        (void)fprintf(stderr, "%s,",
                            file_fmttime((uint32_t)m->value.q, 0));
                        break;
                case FILE_DEFAULT:
                        /* XXX - do anything here? */
                        break;
                default:
                        (void) fputs("*bad*", stderr);
                        break;
                }
        }
        (void) fprintf(stderr, ",\"%s\"]\n", m->desc);
}
#endif

/*VARARGS*/
protected void
file_magwarn(struct magic_set *ms, const char *f, ...)
{
        va_list va;
        va_start(va, f);

        /* cuz we use stdout for most, stderr here */
        (void) fflush(stdout); 

        (void) fprintf(stderr, "%s, %lu: Warning ", ms->file,
            (unsigned long)ms->line);
        (void) vfprintf(stderr, f, va);
        va_end(va);
        (void) fputc('\n', stderr);
}

protected const char *
file_fmttime(uint32_t v, int local)
{
        char *pp, *rt;
        time_t t = (time_t)v;
        struct tm *tm;

        if (local) {
                pp = ctime(&t);
        } else {
#ifndef HAVE_DAYLIGHT
                private int daylight = 0;
#ifdef HAVE_TM_ISDST
                private time_t now = (time_t)0;

                if (now == (time_t)0) {
                        struct tm *tm1;
                        (void)time(&now);
                        tm1 = localtime(&now);
                        if (tm1 == NULL)
                                return "*Invalid time*";
                        daylight = tm1->tm_isdst;
                }
#endif /* HAVE_TM_ISDST */
#endif /* HAVE_DAYLIGHT */
                if (daylight)
                        t += 3600;
                tm = gmtime(&t);
                if (tm == NULL)
                        return "*Invalid time*";
                pp = asctime(tm);
        }

        if ((rt = strchr(pp, '\n')) != NULL)
                *rt = '\0';
        return pp;
}

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