diff options
Diffstat (limited to 'src/print.c')
| -rw-r--r-- | src/print.c | 368 |
1 files changed, 368 insertions, 0 deletions
diff --git a/src/print.c b/src/print.c new file mode 100644 index 0000000..9ab383a --- /dev/null +++ b/src/print.c @@ -0,0 +1,368 @@ +/* + * 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" + +#ifndef lint +FILE_RCSID("@(#)$File: print.c,v 1.99 2023/07/17 16:40:57 christos Exp $") +#endif /* lint */ + +#include <string.h> +#include <stdarg.h> +#include <stdlib.h> +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#include <time.h> + +#include "cdf.h" + +#ifndef COMPILE_ONLY +file_protected void +file_mdump(struct magic *m) +{ + static const char optyp[] = { FILE_OPS }; + char tbuf[256]; + + (void) fprintf(stderr, "%u: %.*s %d", m->lineno, + (m->cont_level & 7) + 1, ">>>>>>>>", 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 in_type*"); + if (m->in_op & FILE_OPINVERSE) + (void) fputc('~', stderr); + (void) fprintf(stderr, "%c%d),", + (CAST(size_t, m->in_op & FILE_OPS_MASK) < + __arraycount(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 type"); + 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_WHITESPACE) + (void) fputc(CHAR_COMPACT_WHITESPACE, stderr); + if (m->str_flags & STRING_COMPACT_OPTIONAL_WHITESPACE) + (void) fputc(CHAR_COMPACT_OPTIONAL_WHITESPACE, + 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_flags & STRING_TEXTTEST) + (void) fputc(CHAR_TEXTTEST, stderr); + if (m->str_flags & STRING_BINTEST) + (void) fputc(CHAR_BINTEST, stderr); + if (m->str_flags & PSTRING_1_BE) + (void) fputc(CHAR_PSTRING_1_BE, stderr); + if (m->str_flags & PSTRING_2_BE) + (void) fputc(CHAR_PSTRING_2_BE, stderr); + if (m->str_flags & PSTRING_2_LE) + (void) fputc(CHAR_PSTRING_2_LE, stderr); + if (m->str_flags & PSTRING_4_BE) + (void) fputc(CHAR_PSTRING_4_BE, stderr); + if (m->str_flags & PSTRING_4_LE) + (void) fputc(CHAR_PSTRING_4_LE, stderr); + if (m->str_flags & PSTRING_LENGTH_INCLUDES_ITSELF) + (void) fputc( + CHAR_PSTRING_LENGTH_INCLUDES_ITSELF, + stderr); + } + if (m->str_range) + (void) fprintf(stderr, "/%u", m->str_range); + } + else { + if (CAST(size_t, m->mask_op & FILE_OPS_MASK) < + __arraycount(optyp)) + (void) fputc(optyp[m->mask_op & FILE_OPS_MASK], stderr); + else + (void) fputc('?', stderr); + + if (m->num_mask) { + (void) fprintf(stderr, "%.8llx", + CAST(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: + case FILE_INDIRECT: + (void) fprintf(stderr, "%d", CAST(int32_t, m->value.l)); + break; + case FILE_BEQUAD: + case FILE_LEQUAD: + case FILE_QUAD: + case FILE_OFFSET: + (void) fprintf(stderr, "%" INT64_T_FORMAT "d", + CAST(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, + CAST(size_t, m->vallen)); + break; + case FILE_DATE: + case FILE_LEDATE: + case FILE_BEDATE: + case FILE_MEDATE: + (void)fprintf(stderr, "%s,", + file_fmtdatetime(tbuf, sizeof(tbuf), m->value.l, 0)); + break; + case FILE_LDATE: + case FILE_LELDATE: + case FILE_BELDATE: + case FILE_MELDATE: + (void)fprintf(stderr, "%s,", + file_fmtdatetime(tbuf, sizeof(tbuf), m->value.l, + FILE_T_LOCAL)); + break; + case FILE_QDATE: + case FILE_LEQDATE: + case FILE_BEQDATE: + (void)fprintf(stderr, "%s,", + file_fmtdatetime(tbuf, sizeof(tbuf), m->value.q, 0)); + break; + case FILE_QLDATE: + case FILE_LEQLDATE: + case FILE_BEQLDATE: + (void)fprintf(stderr, "%s,", + file_fmtdatetime(tbuf, sizeof(tbuf), m->value.q, + FILE_T_LOCAL)); + break; + case FILE_QWDATE: + case FILE_LEQWDATE: + case FILE_BEQWDATE: + (void)fprintf(stderr, "%s,", + file_fmtdatetime(tbuf, sizeof(tbuf), m->value.q, + FILE_T_WINDOWS)); + break; + case FILE_FLOAT: + case FILE_BEFLOAT: + case FILE_LEFLOAT: + (void) fprintf(stderr, "%G", m->value.f); + break; + case FILE_DOUBLE: + case FILE_BEDOUBLE: + case FILE_LEDOUBLE: + (void) fprintf(stderr, "%G", m->value.d); + break; + case FILE_LEVARINT: + case FILE_BEVARINT: + (void)fprintf(stderr, "%s", file_fmtvarint( + tbuf, sizeof(tbuf), m->value.us, m->type)); + break; + case FILE_MSDOSDATE: + case FILE_BEMSDOSDATE: + case FILE_LEMSDOSDATE: + (void)fprintf(stderr, "%s,", + file_fmtdate(tbuf, sizeof(tbuf), m->value.h)); + break; + case FILE_MSDOSTIME: + case FILE_BEMSDOSTIME: + case FILE_LEMSDOSTIME: + (void)fprintf(stderr, "%s,", + file_fmttime(tbuf, sizeof(tbuf), m->value.h)); + break; + case FILE_OCTAL: + (void)fprintf(stderr, "%s", + file_fmtnum(tbuf, sizeof(tbuf), m->value.s, 8)); + break; + case FILE_DEFAULT: + /* XXX - do anything here? */ + break; + case FILE_USE: + case FILE_NAME: + case FILE_DER: + (void) fprintf(stderr, "'%s'", m->value.s); + break; + case FILE_GUID: + (void) file_print_guid(tbuf, sizeof(tbuf), + m->value.guid); + (void) fprintf(stderr, "%s", tbuf); + break; + + default: + (void) fprintf(stderr, "*bad type %d*", m->type); + break; + } + } + (void) fprintf(stderr, ",\"%s\"]\n", m->desc); +} +#endif + +/*VARARGS*/ +file_protected void +file_magwarn(struct magic_set *ms, const char *f, ...) +{ + va_list va; + + /* cuz we use stdout for most, stderr here */ + (void) fflush(stdout); + + if (ms && ms->file) + (void) fprintf(stderr, "%s, %lu: ", ms->file, + CAST(unsigned long, ms->line)); + (void) fprintf(stderr, "Warning: "); + va_start(va, f); + (void) vfprintf(stderr, f, va); + va_end(va); + (void) fputc('\n', stderr); +} + +file_protected const char * +file_fmtvarint(char *buf, size_t blen, const unsigned char *us, int t) +{ + snprintf(buf, blen, "%jd", CAST(intmax_t, + file_varint2uintmax_t(us, t, NULL))); + return buf; +} + +file_protected const char * +file_fmtdatetime(char *buf, size_t bsize, uint64_t v, int flags) +{ + char *pp; + time_t t; + struct tm *tm, tmz; + + if (flags & FILE_T_WINDOWS) { + struct timespec ts; + cdf_timestamp_to_timespec(&ts, CAST(cdf_timestamp_t, v)); + t = ts.tv_sec; + } else { + // XXX: perhaps detect and print something if overflow + // on 32 bit time_t? + t = CAST(time_t, v); + } + + if (t > MAX_CTIME) + goto out; + + if (flags & FILE_T_LOCAL) { + tm = localtime_r(&t, &tmz); + } else { + tm = gmtime_r(&t, &tmz); + } + if (tm == NULL) + goto out; + pp = asctime_r(tm, buf); + + if (pp == NULL) + goto out; + pp[strcspn(pp, "\n")] = '\0'; + return pp; +out: + strlcpy(buf, "*Invalid datetime*", bsize); + return buf; +} + +/* + * https://docs.microsoft.com/en-us/windows/win32/api/winbase/\ + * nf-winbase-dosdatetimetofiletime?redirectedfrom=MSDN + */ +file_protected const char * +file_fmtdate(char *buf, size_t bsize, uint16_t v) +{ + struct tm tm; + + memset(&tm, 0, sizeof(tm)); + tm.tm_mday = v & 0x1f; + tm.tm_mon = ((v >> 5) & 0xf) - 1; + tm.tm_year = (v >> 9) + 80; + + if (strftime(buf, bsize, "%a, %b %d %Y", &tm) == 0) + goto out; + + return buf; +out: + strlcpy(buf, "*Invalid date*", bsize); + return buf; +} + +file_protected const char * +file_fmttime(char *buf, size_t bsize, uint16_t v) +{ + struct tm tm; + + memset(&tm, 0, sizeof(tm)); + tm.tm_sec = (v & 0x1f) * 2; + tm.tm_min = ((v >> 5) & 0x3f); + tm.tm_hour = (v >> 11); + + if (strftime(buf, bsize, "%T", &tm) == 0) + goto out; + + return buf; +out: + strlcpy(buf, "*Invalid time*", bsize); + return buf; + +} + +file_protected const char * +file_fmtnum(char *buf, size_t blen, const char *us, int base) +{ + char *endptr; + unsigned long long val; + + errno = 0; + val = strtoull(us, &endptr, base); + if (*endptr || errno) { +bad: strlcpy(buf, "*Invalid number*", blen); + return buf; + } + + if (snprintf(buf, blen, "%llu", val) < 0) + goto bad; + return buf; +} |