852 lines
16 KiB
C
852 lines
16 KiB
C
/*
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* Copyright (C) 2017-2024 Adrien Gesta-Fline
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*
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* This file is part of libAAF.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <assert.h>
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#include <ctype.h>
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#include <errno.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wchar.h>
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#if defined(__linux__)
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#include <linux/limits.h>
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#include <arpa/inet.h>
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#include <mntent.h>
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#include <unistd.h> /* access() */
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#elif defined(__APPLE__)
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#include <sys/syslimits.h>
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#include <unistd.h> /* access() */
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#elif defined(WIN32) || defined(_WIN32) || defined(__WIN32__) || defined(__NT__)
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#include <limits.h>
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#define R_OK 4 /* Test for read permission. */
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#define W_OK 2 /* Test for write permission. */
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#define F_OK 0 /* Test for existence. */
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#ifndef _MSC_VER
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#include <unistd.h> // access()
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#endif
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#endif
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#include "aaf/utils.h"
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#define BUILD_PATH_DEFAULT_BUF_SIZE 1024
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static int
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utf8CodeLen (const uint16_t* u16Code);
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static int
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utf16CodeLen (const uint16_t* u16Code);
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static int
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utf16CodeToUTF8 (const uint16_t* u16Code, char* u8Code, int* u16Len, int* u8Len);
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static long
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utf8strLen (const uint16_t* u16str);
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#ifdef _WIN32
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wchar_t*
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laaf_util_windows_utf8toutf16 (const char* str)
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{
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if (!str) {
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return NULL;
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}
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int needed = MultiByteToWideChar (CP_UTF8, 0, str, -1, NULL, 0);
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if (needed == 0) {
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return NULL;
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}
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wchar_t* wbuf = malloc ((size_t)needed * sizeof (wchar_t));
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if (!wbuf) {
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return NULL;
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}
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int rc = MultiByteToWideChar (CP_UTF8, 0, str, -1, wbuf, needed);
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if (rc == 0) {
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free (wbuf);
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return NULL;
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}
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return wbuf;
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}
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char*
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laaf_util_windows_utf16toutf8 (const wchar_t* wstr)
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{
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if (!wstr) {
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return NULL;
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}
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int needed = WideCharToMultiByte (CP_UTF8, 0, wstr, -1, NULL, 0, 0, 0);
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if (needed == 0) {
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return NULL;
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}
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char* buf = malloc ((size_t)needed * sizeof (char));
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if (!buf) {
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return NULL;
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}
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int rc = WideCharToMultiByte (CP_UTF8, 0, wstr, -1, buf, needed, 0, 0);
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if (rc == 0) {
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free (buf);
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return NULL;
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}
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return buf;
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}
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#endif
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char*
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laaf_util_clean_filename (char* fname)
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{
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/*
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* sanitize file/dir name
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* https://stackoverflow.com/a/31976060
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*/
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if (!fname) {
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return NULL;
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}
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char* p = fname;
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while (*p) {
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if (*p == '/' ||
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*p == '<' ||
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*p == '>' ||
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*p == ':' ||
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*p == '"' ||
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*p == '|' ||
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*p == '?' ||
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*p == '*' ||
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*p == '\\' ||
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(*p > 0 && *p < 0x20)) {
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*p = '_';
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}
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p++;
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}
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/* windows filenames can't end with ' ' or '.' */
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p = fname + strlen (fname) - 1;
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while (*p && (*p == ' ' || *p == '.')) {
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*p = '\0';
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p--;
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}
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if (*fname == '\0')
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return NULL;
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return fname;
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}
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int
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laaf_util_is_fileext (const char* filepath, const char* ext)
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{
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if (!filepath || !ext) {
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return 0;
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}
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const char* end = filepath + strlen (filepath);
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size_t extlen = 0;
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while (end > filepath && (*end) != '.') {
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--end;
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extlen++;
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}
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if ((*end) == '.') {
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end++;
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extlen--;
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}
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if (!extlen || extlen != strlen (ext)) {
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return 0;
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}
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for (size_t i = 0; i < extlen; i++) {
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if (tolower (*(end + i)) != tolower (*(ext + i))) {
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return 0;
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}
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}
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return 1;
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}
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char*
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laaf_util_build_path (const char* sep, const char* first, ...)
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{
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char* str = malloc (BUILD_PATH_DEFAULT_BUF_SIZE);
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if (!str) {
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return NULL;
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}
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size_t len = BUILD_PATH_DEFAULT_BUF_SIZE;
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size_t offset = 0;
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va_list args;
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if (!sep) {
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sep = DIR_SEP_STR;
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}
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int element_count = 0;
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va_start (args, first);
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const char* arg = first;
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do {
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size_t arglen = strlen (arg);
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size_t argstart = 0;
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int has_leading_sep = 0;
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/* trim leading DIR_SEP */
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for (int i = 0; arg[i] != 0x00; i++) {
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if (IS_ANY_DIR_SEP (arg[i])) {
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has_leading_sep = 1;
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argstart++;
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} else {
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break;
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}
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}
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/* trim trailing DIR_SEP */
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for (size_t i = arglen - 1; i >= argstart; i--) {
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if (IS_ANY_DIR_SEP (arg[i])) {
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arglen--;
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} else {
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break;
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}
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}
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size_t reqlen = (arglen - argstart) + 2;
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if (offset + reqlen >= len) {
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reqlen = ((offset + reqlen) > (len + BUILD_PATH_DEFAULT_BUF_SIZE)) ? (reqlen) : (len + BUILD_PATH_DEFAULT_BUF_SIZE);
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char* tmp = realloc (str, (offset + reqlen));
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if (!tmp) {
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free (str);
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return NULL;
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}
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str = tmp;
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len = (offset + reqlen);
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}
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int written = snprintf (str + offset, len - offset, "%s%.*s",
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((element_count == 0 && has_leading_sep) || (element_count > 0)) ? sep : "",
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(uint32_t) (arglen - argstart),
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arg + argstart);
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if (written < 0 || (size_t)written >= (len - offset)) {
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free (str);
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return NULL;
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}
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offset += (size_t)written;
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element_count++;
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} while ((arg = va_arg (args, char*)) != NULL);
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va_end (args);
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/* do not mix between different dirseps and removes any consecutive dirseps */
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char* i = str;
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char* o = str;
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int dirseppassed = 0;
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while (*i) {
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if (!dirseppassed && IS_ANY_DIR_SEP (*i)) {
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*o = *sep;
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o++;
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dirseppassed = 1;
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} else if (!IS_ANY_DIR_SEP (*i)) {
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dirseppassed = 0;
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*o = *i;
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o++;
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}
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i++;
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}
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*o = '\0';
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return str;
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}
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char*
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laaf_util_relative_path (const char* filepath, const char* refpath)
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{
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if (!filepath || !refpath || filepath[0] == '\0' || refpath[0] == '\0') {
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return NULL;
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}
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int isWindowsPath = 0;
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int aWindowsPath = 0;
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int bWindowsPath = 0;
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char* relpath = NULL;
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if (filepath[0] != '\0' && isalpha (filepath[0]) && filepath[1] == ':') {
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aWindowsPath = 1;
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}
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if (refpath[0] != '\0' && isalpha (refpath[0]) && refpath[1] == ':') {
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bWindowsPath = 1;
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}
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isWindowsPath = (aWindowsPath + bWindowsPath);
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if (isWindowsPath == 1) {
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// fprintf( stderr, "Trying to make a relative path out of a windows path and a non-windows path\n" );
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return NULL;
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}
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if (isWindowsPath == 2) {
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if (tolower (filepath[0]) != tolower (refpath[0])) {
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// fprintf( stderr, "Both paths target different drives\n" );
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return NULL;
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}
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}
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int winDriveLetterOffset = isWindowsPath;
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if (strncmp (filepath + winDriveLetterOffset, refpath + winDriveLetterOffset, strlen (refpath)) == 0) {
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relpath = laaf_util_build_path ("/", "./", filepath + strlen (refpath), NULL);
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return relpath;
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}
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char* _filepath = laaf_util_build_path ("/", filepath, NULL);
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char* _refpath = laaf_util_build_path ("/", refpath, "/", NULL); /* ensures there is always a trailing '/' */
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if (!_filepath || !_refpath) {
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return NULL;
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}
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char* parents = NULL;
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size_t parentsLen = 0;
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size_t parentsOffset = 0;
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char* p = _refpath + strlen (_refpath);
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while (p > (_refpath + winDriveLetterOffset)) {
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while (p > (_refpath + winDriveLetterOffset) && !IS_DIR_SEP (*p)) {
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*p = '\0';
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p--;
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}
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if (strncmp (_filepath + winDriveLetterOffset, _refpath + winDriveLetterOffset, strlen (_refpath + winDriveLetterOffset)) == 0) {
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if (!parents) {
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relpath = laaf_util_build_path ("/", "./", _filepath + strlen (_refpath), NULL);
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goto end;
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} else {
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relpath = laaf_util_build_path ("/", parents, _filepath + strlen (_refpath), NULL);
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goto end;
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}
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}
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int ret = laaf_util_snprintf_realloc (&parents, &parentsLen, parentsOffset, "../");
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assert (ret >= 0);
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parentsOffset += (size_t)ret;
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p--;
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}
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end:
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free (parents);
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free (_filepath);
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free (_refpath);
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return relpath;
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}
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char*
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laaf_util_absolute_path (const char* relpath)
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{
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if (!relpath) {
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return NULL;
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}
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#ifdef _WIN32
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// char *abspath = NULL;
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wchar_t buf[_MAX_PATH];
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wchar_t* wrelpath = laaf_util_windows_utf8toutf16 (relpath);
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if (!wrelpath) {
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return NULL;
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}
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if (!_wfullpath (buf, wrelpath, _MAX_PATH)) {
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free (wrelpath);
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return NULL;
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}
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char* abspath = laaf_util_windows_utf16toutf8 (buf);
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if (!abspath) {
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free (wrelpath);
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return NULL;
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}
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free (wrelpath);
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return abspath;
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#else
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char buf[PATH_MAX + 1];
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if (!realpath (relpath, buf)) {
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return NULL;
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}
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return laaf_util_c99strdup (buf);
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#endif
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}
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int
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laaf_util_snprintf_realloc (char** str, size_t* size, size_t offset, const char* format, ...)
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{
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size_t tmpsize = 0;
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if (!size) {
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size = &tmpsize;
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}
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int retval = 0;
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size_t needed = 0;
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va_list ap;
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va_start (ap, format);
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while (0 <= (retval = vsnprintf ((*str) + offset, (*size) - offset, format, ap)) && ((*size) - offset) < (needed = (unsigned)retval + 1)) {
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va_end (ap);
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*size *= 2;
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if (((*size) - offset) < needed)
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*size = needed + offset;
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char* p = realloc (*str, *size);
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if (p) {
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*str = p;
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} else {
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free (*str);
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*str = NULL;
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*size = 0;
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return 0;
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}
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va_start (ap, format);
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}
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va_end (ap);
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return (retval > 0) ? retval : 0;
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}
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int
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laaf_util_file_exists (const char* filepath)
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{
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#ifdef _WIN32
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int needed = MultiByteToWideChar (CP_UTF8, 0, filepath, -1, NULL, 0);
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if (needed == 0) {
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return -1;
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}
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wchar_t* wfilepath = malloc ((size_t)needed * sizeof (wchar_t));
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if (!wfilepath) {
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return -1;
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}
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int rc = MultiByteToWideChar (CP_UTF8, 0, filepath, -1, wfilepath, needed);
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if (rc == 0) {
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free (wfilepath);
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return -1;
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}
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if (_waccess (wfilepath, F_OK) == 0) {
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free (wfilepath);
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return 1;
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}
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free (wfilepath);
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#else
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if (access (filepath, F_OK) == 0) {
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return 1;
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}
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#endif
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return 0;
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}
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static int
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utf8CodeLen (const uint16_t* u16Code)
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{
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if (u16Code[0] < 0x80) {
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return 1;
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} else if (u16Code[0] < 0x800) {
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return 2;
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} else if (u16Code[0] < 0xD800 ||
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u16Code[0] > 0xDFFF) {
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return 3;
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} else if (((u16Code[0] & 0xFC00) == 0xD800) &&
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((u16Code[1] & 0xFC00) == 0xDC00)) {
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return 4;
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} else {
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return -1;
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}
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}
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static int
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utf16CodeLen (const uint16_t* u16Code)
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{
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if (u16Code[0] < 0xD800 ||
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u16Code[0] > 0xDFFF) {
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return 1;
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} else if (((u16Code[0] & 0xFC00) == 0xD800) &&
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((u16Code[1] & 0xFC00) == 0xDC00)) {
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return 2;
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} else {
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return -1;
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}
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}
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static int
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utf16CodeToUTF8 (const uint16_t* u16Code, char* u8Code, int* u16Len, int* u8Len)
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{
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int len8 = utf8CodeLen (u16Code);
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int len16 = utf16CodeLen (u16Code);
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if (len8 < 0 || len16 < 0) {
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return -1;
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}
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*u8Len = len8;
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*u16Len = len16;
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if (len8 == 1) {
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u8Code[0] = (char)(u16Code[0]);
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} else if (len8 == 2) {
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u8Code[0] = (char)(0xC0 | (u16Code[0] >> 6));
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u8Code[1] = (char)(0x80 | (u16Code[0] & 0x3F));
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} else if (len8 == 3) {
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u8Code[0] = (char)(0xE0 | (u16Code[0] >> 12));
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u8Code[1] = (char)(0x80 | ((u16Code[0] >> 6) & 0x3F));
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u8Code[2] = (char)(0x80 | (u16Code[0] & 0x3F));
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} else {
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uint32_t c = (u16Code[0] & 0x03FF) << 10;
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c |= (u16Code[1] & 0x03FF);
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c += 0x10000;
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u8Code[0] = (char)(0xF0 | ((c >> 18) & 0x07));
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u8Code[1] = (char)(0x80 | ((c >> 12) & 0x3F));
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u8Code[2] = (char)(0x80 | ((c >> 6) & 0x3F));
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u8Code[3] = (char)(0x80 | (c & 0x3F));
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}
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|
|
return *u8Len;
|
|
}
|
|
|
|
static long
|
|
utf8strLen (const uint16_t* u16str)
|
|
{
|
|
long len = 0;
|
|
const uint16_t* p = u16str;
|
|
|
|
while (*p != 0x0000) {
|
|
int u8CodeLen = utf8CodeLen (p);
|
|
int u16CodeLen = utf16CodeLen (p);
|
|
|
|
if (u8CodeLen < 0 || u16CodeLen < 0) {
|
|
len = -1;
|
|
break;
|
|
}
|
|
|
|
p += u16CodeLen;
|
|
len += u8CodeLen;
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
size_t
|
|
laaf_util_utf8strCharLen (const char* u8str)
|
|
{
|
|
size_t count = 0;
|
|
|
|
while (*u8str) {
|
|
count += (*u8str++ & 0xC0) != 0x80;
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
char*
|
|
laaf_util_utf16Toutf8 (const uint16_t* u16str)
|
|
{
|
|
long u8len = utf8strLen (u16str);
|
|
|
|
if (u8len < 0) {
|
|
return 0;
|
|
}
|
|
|
|
char* u8str = calloc ((size_t)u8len + 1, sizeof (char));
|
|
|
|
if (!u8str) {
|
|
return NULL;
|
|
}
|
|
|
|
const uint16_t* u16ptr = u16str;
|
|
char* u8ptr = u8str;
|
|
|
|
while (*u16ptr != 0x0000) {
|
|
int u8codelen = 0;
|
|
int u16codelen = 0;
|
|
|
|
utf16CodeToUTF8 (u16ptr, u8ptr, &u16codelen, &u8codelen);
|
|
|
|
if (u16codelen < 0 || u8codelen < 0) {
|
|
free (u8str);
|
|
return NULL;
|
|
}
|
|
|
|
u8ptr += u8codelen;
|
|
u16ptr += u16codelen;
|
|
}
|
|
|
|
*u8ptr = 0x00;
|
|
|
|
return u8str;
|
|
}
|
|
|
|
int
|
|
laaf_util_vsnprintf_realloc (char** str, size_t* size, size_t offset, const char* fmt, va_list args)
|
|
{
|
|
FILE* dummy = NULL;
|
|
va_list args1;
|
|
|
|
size_t tmpsize = 0;
|
|
|
|
if (size == NULL) {
|
|
size = &tmpsize;
|
|
}
|
|
|
|
va_copy (args1, args);
|
|
|
|
/* https://stackoverflow.com/a/4116308 */
|
|
#ifndef _WIN32
|
|
dummy = fopen ("/dev/null", "wb");
|
|
#else
|
|
dummy = fopen ("NUL", "wb");
|
|
#endif
|
|
|
|
if (!dummy) {
|
|
// fprintf( stderr, "Could not fopen() dummy null file\n" );
|
|
goto err;
|
|
}
|
|
|
|
int retval = vfprintf (dummy, fmt, args);
|
|
|
|
if (retval < 0) {
|
|
// fprintf( stderr, "vfprintf() error : %s\n", strerror(errno) );
|
|
goto err;
|
|
}
|
|
|
|
unsigned needed = (unsigned)retval + 1;
|
|
|
|
if (needed >= (*size) - offset) {
|
|
char* p = realloc (*str, (offset + needed) * sizeof (char));
|
|
|
|
if (p) {
|
|
*str = p;
|
|
*size = offset + needed;
|
|
} else {
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
int written = vsnprintf ((*str) + offset, (*size) - offset, fmt, args1);
|
|
|
|
// assert( written >= 0 && (size_t)written < (*size)-offset );
|
|
|
|
if (written < 0 && (size_t)written >= (*size) - offset) {
|
|
fprintf (stderr, "vsnprintf() error : %s\n", strerror (errno));
|
|
goto err;
|
|
}
|
|
|
|
goto end;
|
|
|
|
err:
|
|
written = -1;
|
|
|
|
end:
|
|
|
|
if (dummy) {
|
|
fclose (dummy);
|
|
}
|
|
|
|
return written;
|
|
}
|
|
|
|
char*
|
|
laaf_util_c99strdup (const char* src)
|
|
{
|
|
if (!src) {
|
|
return NULL;
|
|
}
|
|
|
|
size_t len = 0;
|
|
|
|
while (src[len]) {
|
|
len++;
|
|
}
|
|
|
|
char* str = malloc (len + 1);
|
|
|
|
if (!str) {
|
|
return NULL;
|
|
}
|
|
|
|
char* p = str;
|
|
|
|
while (*src) {
|
|
*(p++) = *(src++);
|
|
}
|
|
|
|
*p = '\0';
|
|
|
|
return str;
|
|
}
|
|
|
|
int
|
|
laaf_util_dump_hex (const unsigned char* stream, size_t stream_sz, char** buf, size_t* bufsz, size_t offset, const char* padding)
|
|
{
|
|
if (stream == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
size_t initialOffset = offset;
|
|
uint32_t i = 0;
|
|
|
|
char hex[49];
|
|
char ascii[19];
|
|
|
|
size_t count = 0;
|
|
|
|
int rc = laaf_util_snprintf_realloc (buf, bufsz, offset, "%s______________________________ Hex Dump ______________________________\n\n", padding);
|
|
|
|
if (rc < 0) {
|
|
goto end;
|
|
}
|
|
|
|
offset += (size_t)rc;
|
|
|
|
while (count < stream_sz) {
|
|
size_t lineLen = (stream_sz - count) / 16;
|
|
|
|
if (lineLen <= 0)
|
|
lineLen = (stream_sz) % 16;
|
|
else
|
|
lineLen = 16;
|
|
|
|
memset (&hex, 0x20, sizeof (hex));
|
|
memset (&ascii, 0x00, sizeof (ascii));
|
|
|
|
uint32_t linepos = 0;
|
|
|
|
for (i = 0; i < lineLen; i++) {
|
|
rc = snprintf (&hex[linepos], sizeof (hex) - (linepos), "%02x%s", *(const unsigned char*)(stream + count + i), (i == 7) ? " " : " ");
|
|
|
|
if (rc < 0) {
|
|
goto end;
|
|
}
|
|
|
|
linepos += (uint32_t)rc;
|
|
|
|
if (i < 8) {
|
|
if (isalnum (*(stream + count + i)))
|
|
ascii[i] = *(const char*)(stream + count + i);
|
|
else
|
|
ascii[i] = '.';
|
|
} else if (i > 8) {
|
|
if (isalnum (*(stream + count + i)))
|
|
ascii[i + 1] = *(const char*)(stream + count + i);
|
|
else
|
|
ascii[i + 1] = '.';
|
|
} else {
|
|
if (isalnum (*(stream + count + i))) {
|
|
ascii[i] = ' ';
|
|
ascii[i + 1] = *(const char*)(stream + count + i);
|
|
} else {
|
|
ascii[i] = ' ';
|
|
ascii[i + 1] = '.';
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Fill with blank the rest of the line */
|
|
if (lineLen < 16) {
|
|
for (i = linepos; i < 48; i++) {
|
|
hex[linepos++] = 0x20;
|
|
}
|
|
}
|
|
|
|
/* terminate the line */
|
|
hex[48] = 0x00;
|
|
|
|
count += lineLen;
|
|
|
|
rc = laaf_util_snprintf_realloc (buf, bufsz, offset, "%s%s | %s\n", padding, hex, ascii);
|
|
|
|
if (rc < 0) {
|
|
goto end;
|
|
}
|
|
|
|
offset += (size_t)rc;
|
|
}
|
|
|
|
rc = laaf_util_snprintf_realloc (buf, bufsz, offset, "%s______________________________________________________________________\n\n", padding);
|
|
|
|
if (rc < 0) {
|
|
goto end;
|
|
}
|
|
|
|
end:
|
|
return (int)(offset - initialOffset); /* bytes written */
|
|
}
|