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# src/sgemisc.c

    00001 /*
    00002  * Copyright (c) 2007 Heiko Irrgang
    00003  *
    00004  * The license and distribution terms for this file may be
    00005  * found in the file COPYING in this distribution or at
    00006  * http://93-interactive.com/cms/products/software/sdl-game-engine/license/
    00007  */
    00008
    00009 #include <sge.h>
    00010
    00011 int sgeGetDistance(int x, int y, int xx, int yy) {
    00012         int distx=xx-x;
    00013         int disty=yy-y;
    00014
    00015         return (int) sgeRound(sqrt(distx*distx+disty*disty));
    00016 }
    00017
    00018 char *sgeMD5(const unsigned char *data, unsigned int datalen) {
    00019         char *ret=NULL;
    00020         int i;
    00021         md5_state_t md5;
    00022         md5_byte_t digest[16];
    00023
    00024         md5_init(&md5);
    00025         md5_append(&md5, (const md5_byte_t *)data, datalen);
    00026         md5_finish(&md5, digest);
    00027
    00028         sgeMalloc(ret, char, 33);
    00029         for (i=0; i<16; i++) {
    00030                 sprintf(ret+i*2, "%0x", digest[i]);
    00031         }
    00032         return ret;
    00033 }
    00034
    00035 char *sgeSHA1(const unsigned char *data, unsigned int datalen) {
    00036         char *ret=NULL;
    00037         int i=0;
    00038         SHA1Context sha;
    00039
    00040         SHA1Reset(&sha);
    00041         SHA1Input(&sha, data, datalen);
    00042         SHA1Result(&sha);
    00043
    00044         sgeMalloc(ret, char, 41);
    00045         for (i=0; i<5; i++) {
    00046                 sprintf(ret+i*8, "%08x", sha.Message_Digest[i]);
    00047         }
    00048         return ret;
    00049 }
    00050

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