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f0a1379e5a
minetest/src/util/string.cpp
est31 f0a1379e5a Refactor around translatePassword 
Change types for passed password from wstring to string, which removes converting
back and forth in most cases. Move the narrow_to_wide conversion, where its neccessary,
closer to irrlicht. Remove trailing spaces in guiPasswordChange.cpp. Make parameters for
translatePassword passed as const reference.
2015-04-17 06:10:30 +02:00

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/*
Minetest
Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "string.h"
#include "pointer.h"
#include "numeric.h"
#include "log.h"
#include "sha1.h"
#include "base64.h"
#include "hex.h"
#include "../porting.h"
#include <algorithm>
#include <sstream>
#include <iomanip>
#include <map>
static bool parseHexColorString(const std::string &value, video::SColor &color);
static bool parseNamedColorString(const std::string &value, video::SColor &color);
// You must free the returned string!
// The returned string is allocated using new
wchar_t *narrow_to_wide_c(const char *str)
{
wchar_t* nstr = 0;
#if defined(_WIN32)
int nResult = MultiByteToWideChar(CP_UTF8, 0, (LPCSTR) str, -1, 0, 0);
if (nResult == 0) {
errorstream<<"gettext: MultiByteToWideChar returned null"<<std::endl;
} else {
nstr = new wchar_t[nResult];
MultiByteToWideChar(CP_UTF8, 0, (LPCSTR) str, -1, (WCHAR *) nstr, nResult);
}
#else
size_t len = strlen(str);
nstr = new wchar_t[len+1];
std::wstring intermediate = narrow_to_wide(str);
memset(nstr, 0, (len + 1) * sizeof(wchar_t));
memcpy(nstr, intermediate.c_str(), len * sizeof(wchar_t));
#endif
return nstr;
}
#ifdef __ANDROID__
const wchar_t* wide_chars =
L" !\"#$%&'()*+,-./0123456789:;<=>?@"
L"ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`"
L"abcdefghijklmnopqrstuvwxyz{|}~";
int wctomb(char *s, wchar_t wc)
{
for (unsigned int j = 0; j < (sizeof(wide_chars)/sizeof(wchar_t));j++) {
if (wc == wide_chars[j]) {
*s = (char) (j+32);
return 1;
}
else if (wc == L'\n') {
*s = '\n';
return 1;
}
}
return -1;
}
int mbtowc(wchar_t *pwc, const char *s, size_t n)
{
std::wstring intermediate = narrow_to_wide(s);
if (intermediate.length() > 0) {
*pwc = intermediate[0];
return 1;
}
else {
return -1;
}
}
std::wstring narrow_to_wide(const std::string &mbs) {
size_t wcl = mbs.size();
std::wstring retval = L"";
for (unsigned int i = 0; i < wcl; i++) {
if (((unsigned char) mbs[i] >31) &&
((unsigned char) mbs[i] < 127)) {
retval += wide_chars[(unsigned char) mbs[i] -32];
}
//handle newline
else if (mbs[i] == '\n') {
retval += L'\n';
}
}
return retval;
}
#else // not Android
std::wstring narrow_to_wide(const std::string &mbs)
{
size_t wcl = mbs.size();
Buffer<wchar_t> wcs(wcl + 1);
size_t len = mbstowcs(*wcs, mbs.c_str(), wcl);
if (len == (size_t)(-1))
return L"<invalid multibyte string>";
wcs[len] = 0;
return *wcs;
}
#endif
#ifdef __ANDROID__
std::string wide_to_narrow(const std::wstring &wcs) {
size_t mbl = wcs.size()*4;
std::string retval = "";
for (unsigned int i = 0; i < wcs.size(); i++) {
wchar_t char1 = (wchar_t) wcs[i];
if (char1 == L'\n') {
retval += '\n';
continue;
}
for (unsigned int j = 0; j < wcslen(wide_chars);j++) {
wchar_t char2 = (wchar_t) wide_chars[j];
if (char1 == char2) {
char toadd = (j+32);
retval += toadd;
break;
}
}
}
return retval;
}
#else // not Android
std::string wide_to_narrow(const std::wstring &wcs)
{
size_t mbl = wcs.size() * 4;
SharedBuffer<char> mbs(mbl+1);
size_t len = wcstombs(*mbs, wcs.c_str(), mbl);
if (len == (size_t)(-1))
return "Character conversion failed!";
else
mbs[len] = 0;
return *mbs;
}
#endif
// Get an sha-1 hash of the player's name combined with
// the password entered. That's what the server uses as
// their password. (Exception : if the password field is
// blank, we send a blank password - this is for backwards
// compatibility with password-less players).
std::string translatePassword(const std::string &playername,
const std::string &password)
{
if (password.length() == 0)
return "";
std::string slt = playername + password;
SHA1 sha1;
sha1.addBytes(slt.c_str(), slt.length());
unsigned char *digest = sha1.getDigest();
std::string pwd = base64_encode(digest, 20);
free(digest);
return pwd;
}
std::string urlencode(std::string str)
{
// Encodes non-unreserved URI characters by a percent sign
// followed by two hex digits. See RFC 3986, section 2.3.
static const char url_hex_chars[] = "0123456789ABCDEF";
std::ostringstream oss(std::ios::binary);
for (u32 i = 0; i < str.size(); i++) {
unsigned char c = str[i];
if (isalnum(c) || c == '-' || c == '.' || c == '_' || c == '~')
oss << c;
else
oss << "%"
<< url_hex_chars[(c & 0xf0) >> 4]
<< url_hex_chars[c & 0x0f];
}
return oss.str();
}
std::string urldecode(std::string str)
{
// Inverse of urlencode
std::ostringstream oss(std::ios::binary);
for (u32 i = 0; i < str.size(); i++) {
unsigned char highvalue, lowvalue;
if (str[i] == '%' &&
hex_digit_decode(str[i+1], highvalue) &&
hex_digit_decode(str[i+2], lowvalue)) {
oss << (char) ((highvalue << 4) | lowvalue);
i += 2;
}
else
oss << str[i];
}
return oss.str();
}
u32 readFlagString(std::string str, const FlagDesc *flagdesc, u32 *flagmask)
{
u32 result = 0, mask = 0;
char *s = &str[0];
char *flagstr, *strpos = NULL;
while ((flagstr = strtok_r(s, ",", &strpos))) {
s = NULL;
while (*flagstr == ' ' || *flagstr == '\t')
flagstr++;
bool flagset = true;
if (!strncasecmp(flagstr, "no", 2)) {
flagset = false;
flagstr += 2;
}
for (int i = 0; flagdesc[i].name; i++) {
if (!strcasecmp(flagstr, flagdesc[i].name)) {
mask |= flagdesc[i].flag;
if (flagset)
result |= flagdesc[i].flag;
break;
}
}
}
if (flagmask)
*flagmask = mask;
return result;
}
std::string writeFlagString(u32 flags, const FlagDesc *flagdesc, u32 flagmask)
{
std::string result;
for (int i = 0; flagdesc[i].name; i++) {
if (flagmask & flagdesc[i].flag) {
if (!(flags & flagdesc[i].flag))
result += "no";
result += flagdesc[i].name;
result += ", ";
}
}
size_t len = result.length();
if (len >= 2)
result.erase(len - 2, 2);
return result;
}
size_t mystrlcpy(char *dst, const char *src, size_t size)
{
size_t srclen = strlen(src) + 1;
size_t copylen = MYMIN(srclen, size);
if (copylen > 0) {
memcpy(dst, src, copylen);
dst[copylen - 1] = '\0';
}
return srclen;
}
char *mystrtok_r(char *s, const char *sep, char **lasts)
{
char *t;
if (!s)
s = *lasts;
while (*s && strchr(sep, *s))
s++;
if (!*s)
return NULL;
t = s;
while (*t) {
if (strchr(sep, *t)) {
*t++ = '\0';
break;
}
t++;
}
*lasts = t;
return s;
}
u64 read_seed(const char *str)
{
char *endptr;
u64 num;
if (str[0] == '0' && str[1] == 'x')
num = strtoull(str, &endptr, 16);
else
num = strtoull(str, &endptr, 10);
if (*endptr)
num = murmur_hash_64_ua(str, (int)strlen(str), 0x1337);
return num;
}
bool parseColorString(const std::string &value, video::SColor &color, bool quiet)
{
bool success;
if (value[0] == '#')
success = parseHexColorString(value, color);
else
success = parseNamedColorString(value, color);
if (!success && !quiet)
errorstream << "Invalid color: \"" << value << "\"" << std::endl;
return success;
}
static bool parseHexColorString(const std::string &value, video::SColor &color)
{
unsigned char components[] = { 0x00, 0x00, 0x00, 0xff }; // R,G,B,A
if (value[0] != '#')
return false;
size_t len = value.size();
bool short_form;
if (len == 9 || len == 7) // #RRGGBBAA or #RRGGBB
short_form = false;
else if (len == 5 || len == 4) // #RGBA or #RGB
short_form = true;
else
return false;
bool success = true;
for (size_t pos = 1, cc = 0; pos < len; pos++, cc++) {
assert(cc < sizeof components / sizeof components[0]);
if (short_form) {
unsigned char d;
if (!hex_digit_decode(value[pos], d)) {
success = false;
break;
}
components[cc] = (d & 0xf) << 4 | (d & 0xf);
} else {
unsigned char d1, d2;
if (!hex_digit_decode(value[pos], d1) ||
!hex_digit_decode(value[pos+1], d2)) {
success = false;
break;
}
components[cc] = (d1 & 0xf) << 4 | (d2 & 0xf);
pos++; // skip the second digit -- it's already used
}
}
if (success) {
color.setRed(components[0]);
color.setGreen(components[1]);
color.setBlue(components[2]);
color.setAlpha(components[3]);
}
return success;
}
struct ColorContainer {
ColorContainer();
std::map<const std::string, u32> colors;
};
ColorContainer::ColorContainer()
{
colors["aliceblue"] = 0xf0f8ff;
colors["antiquewhite"] = 0xfaebd7;
colors["aqua"] = 0x00ffff;
colors["aquamarine"] = 0x7fffd4;
colors["azure"] = 0xf0ffff;
colors["beige"] = 0xf5f5dc;
colors["bisque"] = 0xffe4c4;
colors["black"] = 00000000;
colors["blanchedalmond"] = 0xffebcd;
colors["blue"] = 0x0000ff;
colors["blueviolet"] = 0x8a2be2;
colors["brown"] = 0xa52a2a;
colors["burlywood"] = 0xdeb887;
colors["cadetblue"] = 0x5f9ea0;
colors["chartreuse"] = 0x7fff00;
colors["chocolate"] = 0xd2691e;
colors["coral"] = 0xff7f50;
colors["cornflowerblue"] = 0x6495ed;
colors["cornsilk"] = 0xfff8dc;
colors["crimson"] = 0xdc143c;
colors["cyan"] = 0x00ffff;
colors["darkblue"] = 0x00008b;
colors["darkcyan"] = 0x008b8b;
colors["darkgoldenrod"] = 0xb8860b;
colors["darkgray"] = 0xa9a9a9;
colors["darkgreen"] = 0x006400;
colors["darkkhaki"] = 0xbdb76b;
colors["darkmagenta"] = 0x8b008b;
colors["darkolivegreen"] = 0x556b2f;
colors["darkorange"] = 0xff8c00;
colors["darkorchid"] = 0x9932cc;
colors["darkred"] = 0x8b0000;
colors["darksalmon"] = 0xe9967a;
colors["darkseagreen"] = 0x8fbc8f;
colors["darkslateblue"] = 0x483d8b;
colors["darkslategray"] = 0x2f4f4f;
colors["darkturquoise"] = 0x00ced1;
colors["darkviolet"] = 0x9400d3;
colors["deeppink"] = 0xff1493;
colors["deepskyblue"] = 0x00bfff;
colors["dimgray"] = 0x696969;
colors["dodgerblue"] = 0x1e90ff;
colors["firebrick"] = 0xb22222;
colors["floralwhite"] = 0xfffaf0;
colors["forestgreen"] = 0x228b22;
colors["fuchsia"] = 0xff00ff;
colors["gainsboro"] = 0xdcdcdc;
colors["ghostwhite"] = 0xf8f8ff;
colors["gold"] = 0xffd700;
colors["goldenrod"] = 0xdaa520;
colors["gray"] = 0x808080;
colors["green"] = 0x008000;
colors["greenyellow"] = 0xadff2f;
colors["honeydew"] = 0xf0fff0;
colors["hotpink"] = 0xff69b4;
colors["indianred "] = 0xcd5c5c;
colors["indigo "] = 0x4b0082;
colors["ivory"] = 0xfffff0;
colors["khaki"] = 0xf0e68c;
colors["lavender"] = 0xe6e6fa;
colors["lavenderblush"] = 0xfff0f5;
colors["lawngreen"] = 0x7cfc00;
colors["lemonchiffon"] = 0xfffacd;
colors["lightblue"] = 0xadd8e6;
colors["lightcoral"] = 0xf08080;
colors["lightcyan"] = 0xe0ffff;
colors["lightgoldenrodyellow"] = 0xfafad2;
colors["lightgray"] = 0xd3d3d3;
colors["lightgreen"] = 0x90ee90;
colors["lightpink"] = 0xffb6c1;
colors["lightsalmon"] = 0xffa07a;
colors["lightseagreen"] = 0x20b2aa;
colors["lightskyblue"] = 0x87cefa;
colors["lightslategray"] = 0x778899;
colors["lightsteelblue"] = 0xb0c4de;
colors["lightyellow"] = 0xffffe0;
colors["lime"] = 0x00ff00;
colors["limegreen"] = 0x32cd32;
colors["linen"] = 0xfaf0e6;
colors["magenta"] = 0xff00ff;
colors["maroon"] = 0x800000;
colors["mediumaquamarine"] = 0x66cdaa;
colors["mediumblue"] = 0x0000cd;
colors["mediumorchid"] = 0xba55d3;
colors["mediumpurple"] = 0x9370db;
colors["mediumseagreen"] = 0x3cb371;
colors["mediumslateblue"] = 0x7b68ee;
colors["mediumspringgreen"] = 0x00fa9a;
colors["mediumturquoise"] = 0x48d1cc;
colors["mediumvioletred"] = 0xc71585;
colors["midnightblue"] = 0x191970;
colors["mintcream"] = 0xf5fffa;
colors["mistyrose"] = 0xffe4e1;
colors["moccasin"] = 0xffe4b5;
colors["navajowhite"] = 0xffdead;
colors["navy"] = 0x000080;
colors["oldlace"] = 0xfdf5e6;
colors["olive"] = 0x808000;
colors["olivedrab"] = 0x6b8e23;
colors["orange"] = 0xffa500;
colors["orangered"] = 0xff4500;
colors["orchid"] = 0xda70d6;
colors["palegoldenrod"] = 0xeee8aa;
colors["palegreen"] = 0x98fb98;
colors["paleturquoise"] = 0xafeeee;
colors["palevioletred"] = 0xdb7093;
colors["papayawhip"] = 0xffefd5;
colors["peachpuff"] = 0xffdab9;
colors["peru"] = 0xcd853f;
colors["pink"] = 0xffc0cb;
colors["plum"] = 0xdda0dd;
colors["powderblue"] = 0xb0e0e6;
colors["purple"] = 0x800080;
colors["red"] = 0xff0000;
colors["rosybrown"] = 0xbc8f8f;
colors["royalblue"] = 0x4169e1;
colors["saddlebrown"] = 0x8b4513;
colors["salmon"] = 0xfa8072;
colors["sandybrown"] = 0xf4a460;
colors["seagreen"] = 0x2e8b57;
colors["seashell"] = 0xfff5ee;
colors["sienna"] = 0xa0522d;
colors["silver"] = 0xc0c0c0;
colors["skyblue"] = 0x87ceeb;
colors["slateblue"] = 0x6a5acd;
colors["slategray"] = 0x708090;
colors["snow"] = 0xfffafa;
colors["springgreen"] = 0x00ff7f;
colors["steelblue"] = 0x4682b4;
colors["tan"] = 0xd2b48c;
colors["teal"] = 0x008080;
colors["thistle"] = 0xd8bfd8;
colors["tomato"] = 0xff6347;
colors["turquoise"] = 0x40e0d0;
colors["violet"] = 0xee82ee;
colors["wheat"] = 0xf5deb3;
colors["white"] = 0xffffff;
colors["whitesmoke"] = 0xf5f5f5;
colors["yellow"] = 0xffff00;
colors["yellowgreen"] = 0x9acd32;
}
static const ColorContainer named_colors;
static bool parseNamedColorString(const std::string &value, video::SColor &color)
{
std::string color_name;
std::string alpha_string;
/* If the string has a # in it, assume this is the start of a specified
* alpha value (if it isn't the string is invalid and the error will be
* caught later on, either because the color name won't be found or the
* alpha value will fail conversion)
*/
size_t alpha_pos = value.find('#');
if (alpha_pos != std::string::npos) {
color_name = value.substr(0, alpha_pos);
alpha_string = value.substr(alpha_pos + 1);
} else {
color_name = value;
}
color_name = lowercase(value);
std::map<const std::string, unsigned>::const_iterator it;
it = named_colors.colors.find(color_name);
if (it == named_colors.colors.end())
return false;
u32 color_temp = it->second;
/* An empty string for alpha is ok (none of the color table entries
* have an alpha value either). Color strings without an alpha specified
* are interpreted as fully opaque
*
* For named colors the supplied alpha string (representing a hex value)
* must be exactly two digits. For example: colorname#08
*/
if (!alpha_string.empty()) {
if (alpha_string.length() != 2)
return false;
unsigned char d1, d2;
if (!hex_digit_decode(alpha_string.at(0), d1)
|| !hex_digit_decode(alpha_string.at(1), d2))
return false;
color_temp |= ((d1 & 0xf) << 4 | (d2 & 0xf)) << 24;
} else {
color_temp |= 0xff << 24; // Fully opaque
}
color = video::SColor(color_temp);
return true;
}
void str_replace(std::string &str, char from, char to)
{
std::replace(str.begin(), str.end(), from, to);
}
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