/*-
* Copyright (c) 2009 Michihiro NAKAJIMA
* Copyright (c) 2003-2007 Tim Kientzle
* All rights reserved.
*
* 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, 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(S) ``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(S) 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.
*/
#include "archive_platform.h"
__FBSDID("$FreeBSD: src/lib/libarchive/archive_util.c,v 1.19 2008/10/21 12:10:30 des Exp $");
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#include "archive.h"
#include "archive_private.h"
#include "archive_string.h"
#if ARCHIVE_VERSION_NUMBER < 3000000
/* These disappear in libarchive 3.0 */
/* Deprecated. */
int
archive_api_feature(void)
{
return (ARCHIVE_API_FEATURE);
}
/* Deprecated. */
int
archive_api_version(void)
{
return (ARCHIVE_API_VERSION);
}
/* Deprecated synonym for archive_version_number() */
int
archive_version_stamp(void)
{
return (archive_version_number());
}
/* Deprecated synonym for archive_version_string() */
const char *
archive_version(void)
{
return (archive_version_string());
}
#endif
int
archive_version_number(void)
{
return (ARCHIVE_VERSION_NUMBER);
}
const char *
archive_version_string(void)
{
return (ARCHIVE_VERSION_STRING);
}
int
archive_errno(struct archive *a)
{
return (a->archive_error_number);
}
const char *
archive_error_string(struct archive *a)
{
if (a->error != NULL && *a->error != '\0')
return (a->error);
else
return ("(Empty error message)");
}
int
archive_file_count(struct archive *a)
{
return (a->file_count);
}
int
archive_format(struct archive *a)
{
return (a->archive_format);
}
const char *
archive_format_name(struct archive *a)
{
return (a->archive_format_name);
}
int
archive_compression(struct archive *a)
{
return (a->compression_code);
}
const char *
archive_compression_name(struct archive *a)
{
return (a->compression_name);
}
/*
* Return a count of the number of compressed bytes processed.
*/
int64_t
archive_position_compressed(struct archive *a)
{
return (a->raw_position);
}
/*
* Return a count of the number of uncompressed bytes processed.
*/
int64_t
archive_position_uncompressed(struct archive *a)
{
return (a->file_position);
}
void
archive_clear_error(struct archive *a)
{
archive_string_empty(&a->error_string);
a->error = NULL;
}
void
archive_set_error(struct archive *a, int error_number, const char *fmt, ...)
{
va_list ap;
a->archive_error_number = error_number;
if (fmt == NULL) {
a->error = NULL;
return;
}
va_start(ap, fmt);
archive_string_vsprintf(&(a->error_string), fmt, ap);
va_end(ap);
a->error = a->error_string.s;
}
void
archive_copy_error(struct archive *dest, struct archive *src)
{
dest->archive_error_number = src->archive_error_number;
archive_string_copy(&dest->error_string, &src->error_string);
dest->error = dest->error_string.s;
}
void
__archive_errx(int retvalue, const char *msg)
{
static const char *msg1 = "Fatal Internal Error in libarchive: ";
size_t s;
s = write(2, msg1, strlen(msg1));
s = write(2, msg, strlen(msg));
s = write(2, "\n", 1);
(void)s; /* UNUSED */
exit(retvalue);
}
/*
* Parse option strings
* Detail of option format.
* - The option can accept:
* "opt-name", "!opt-name", "opt-name=value".
*
* - The option entries are separated by comma.
* e.g "compression=9,opt=XXX,opt-b=ZZZ"
*
* - The name of option string consist of '-' and alphabet
* but character '-' cannot be used for the first character.
* (Regular expression is [a-z][-a-z]+)
*
* - For a specfic format/filter, using the format name with ':'.
* e.g "zip:compression=9"
* (This "compression=9" option entry is for "zip" format only)
*
* If another entries follow it, those are not for
* the specfic format/filter.
* e.g handle "zip:compression=9,opt=XXX,opt-b=ZZZ"
* "zip" format/filter handler will get "compression=9"
* all format/filter handler will get "opt=XXX"
* all format/filter handler will get "opt-b=ZZZ"
*
* - Whitespace and tab are bypassed.
*
*/
int
__archive_parse_options(const char *p, const char *fn, int keysize, char *key,
int valsize, char *val)
{
const char *p_org;
int apply;
int kidx, vidx;
int negative;
enum {
/* Requested for initialization. */
INIT,
/* Finding format/filter-name and option-name. */
F_BOTH,
/* Finding option-name only.
* (already detected format/filter-name) */
F_NAME,
/* Getting option-value. */
G_VALUE,
} state;
p_org = p;
state = INIT;
kidx = vidx = negative = 0;
apply = 1;
while (*p) {
switch (state) {
case INIT:
kidx = vidx = 0;
negative = 0;
apply = 1;
state = F_BOTH;
break;
case F_BOTH:
case F_NAME:
if ((*p >= 'a' && *p <= 'z') ||
(*p >= '0' && *p <= '9') || *p == '-') {
if (kidx == 0 && !(*p >= 'a' && *p <= 'z'))
/* Illegal sequence. */
return (-1);
if (kidx >= keysize -1)
/* Too many characters. */
return (-1);
key[kidx++] = *p++;
} else if (*p == '!') {
if (kidx != 0)
/* Illegal sequence. */
return (-1);
negative = 1;
++p;
} else if (*p == ',') {
if (kidx == 0)
/* Illegal sequence. */
return (-1);
if (!negative)
val[vidx++] = '1';
/* We have got boolean option data. */
++p;
if (apply)
goto complete;
else
/* This option does not apply to the
* format which the fn variable
* indicate. */
state = INIT;
} else if (*p == ':') {
/* obuf data is format name */
if (state == F_NAME)
/* We already found it. */
return (-1);
if (kidx == 0)
/* Illegal sequence. */
return (-1);
if (negative)
/* We cannot accept "!format-name:". */
return (-1);
key[kidx] = '\0';
if (strcmp(fn, key) != 0)
/* This option does not apply to the
* format which the fn variable
* indicate. */
apply = 0;
kidx = 0;
++p;
state = F_NAME;
} else if (*p == '=') {
if (kidx == 0)
/* Illegal sequence. */
return (-1);
if (negative)
/* We cannot accept "!opt-name=value". */
return (-1);
++p;
state = G_VALUE;
} else if (*p == ' ') {
/* Pass the space character */
++p;
} else {
/* Illegal character. */
return (-1);
}
break;
case G_VALUE:
if (*p == ',') {
if (vidx == 0)
/* Illegal sequence. */
return (-1);
/* We have got option data. */
++p;
if (apply)
goto complete;
else
/* This option does not apply to the
* format which the fn variable
* indicate. */
state = INIT;
} else if (*p == ' ') {
/* Pass the space character */
++p;
} else {
if (vidx >= valsize -1)
/* Too many characters. */
return (-1);
val[vidx++] = *p++;
}
break;
}
}
switch (state) {
case F_BOTH:
case F_NAME:
if (kidx != 0) {
if (!negative)
val[vidx++] = '1';
/* We have got boolean option. */
if (apply)
/* This option apply to the format which the
* fn variable indicate. */
goto complete;
}
break;
case G_VALUE:
if (vidx == 0)
/* Illegal sequence. */
return (-1);
/* We have got option value. */
if (apply)
/* This option apply to the format which the fn
* variable indicate. */
goto complete;
break;
case INIT:/* nothing */
break;
}
/* End of Option string. */
return (0);
complete:
key[kidx] = '\0';
val[vidx] = '\0';
/* Return a size which we've consumed for detecting option */
return ((int)(p - p_org));
}