minetest/src/util/string.cpp

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/*
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Minetest
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Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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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
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(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.
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You should have received a copy of the GNU Lesser General Public License along
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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"
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#include "../sha1.h"
#include "../base64.h"
#include "../porting.h"
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// 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(std::string playername, std::wstring password)
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{
if(password.length() == 0)
return "";
std::string slt = playername + wide_to_narrow(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;
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}
size_t curl_write_data(char *ptr, size_t size, size_t nmemb, void *userdata) {
std::ostringstream *stream = (std::ostringstream*)userdata;
size_t count = size * nmemb;
stream->write(ptr, count);
return count;
}
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u32 readFlagString(std::string str, FlagDesc *flagdesc) {
u32 result = 0;
char *s = &str[0];
char *flagstr, *strpos = NULL;
while ((flagstr = strtok_r(s, ",", &strpos))) {
s = NULL;
while (*flagstr == ' ' || *flagstr == '\t')
flagstr++;
for (int i = 0; flagdesc[i].name; i++) {
if (!strcasecmp(flagstr, flagdesc[i].name)) {
result |= flagdesc[i].flag;
break;
}
}
}
return result;
}
std::string writeFlagString(u32 flags, FlagDesc *flagdesc) {
std::string result;
for (int i = 0; flagdesc[i].name; i++) {
if (flags & flagdesc[i].flag) {
result += flagdesc[i].name;
result += ", ";
}
}
size_t len = result.length();
if (len >= 2)
result.erase(len - 2, 2);
return result;
}
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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;
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}
t++;
}
*lasts = t;
return s;
}