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qshared.c
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qshared.c
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/*
===========================================================================
Copyright (C) 2010-2013 Ninja and TheKelm
Copyright (C) 1999-2005 Id Software, Inc.
This file is part of CoD4X18-Server source code.
CoD4X18-Server source code is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
CoD4X18-Server source code 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>
===========================================================================
*/
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <ctype.h>
#define __QSHARED_C__
#include "q_shared.h"
#include "qcommon_io.h"
#include "sys_thread.h"
#include "misc.h"
#include "null_client.h"
int Q_isprint( int c )
{
if ( c >= 0x20 && c <= 0x7E )
return ( 1 );
return ( 0 );
}
int Q_islower( int c )
{
if (c >= 'a' && c <= 'z')
return ( 1 );
return ( 0 );
}
int Q_isupper( int c )
{
if (c >= 'A' && c <= 'Z')
return ( 1 );
return ( 0 );
}
int Q_isalpha( int c )
{
if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'))
return ( 1 );
return ( 0 );
}
int Q_isalphanum( int c )
{
if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9'))
return ( 1 );
return ( 0 );
}
qboolean Q_isanumber( const char *s )
{
char *p;
if( *s == '\0' )
return qfalse;
strtod( s, &p );
return *p == '\0';
}
qboolean Q_isintegral( float f )
{
return (int)f == f;
}
qboolean Q_isprintstring( char* s ){
char* a = s;
while( *a ){
if ( *a < 0x20 || *a > 0x7E ) return 0;
a++;
}
return 1;
}
/*
This part makes qshared.c undepended in case no proper qcommon.h is included
*/
#ifndef __QCOMMON_STDIO_H__
#define Com_Printf printf
#define Com_PrintWarning printf
#define Com_DPrintf printf
#define ERR_FATAL 0
#define ERR_DROP 1
void Com_Error(int err, char* fmt,...)
{
char buf[MAX_STRING_CHARS];
va_list argptr;
va_start (argptr,fmt);
Q_vsnprintf(buf, sizeof(buf), fmt, argptr);
va_end (argptr);
fputs(buf, stdout);
exit(1);
}
#endif
/*
=============
Q_strncpyz
Safe strncpy that ensures a trailing zero
=============
*/
void Q_strncpyz( char *dest, const char *src, int destsize ) {
if (!dest ) {
Com_Error( ERR_FATAL, "Q_strncpyz: NULL dest" );
}
if ( !src ) {
Com_Error( ERR_FATAL, "Q_strncpyz: NULL src" );
}
if ( destsize < 1 ) {
Com_Error(ERR_FATAL,"Q_strncpyz: destsize < 1" );
}
strncpy( dest, src, destsize-1 );
dest[destsize-1] = 0;
}
int Q_stricmpn (const char *s1, const char *s2, int n) {
int c1, c2;
if ( s1 == NULL ) {
if ( s2 == NULL )
return 0;
else
return -1;
}
else if ( s2==NULL )
return 1;
do {
c1 = *s1++;
c2 = *s2++;
if (!n--) {
return 0; // strings are equal until end point
}
if (c1 != c2) {
if (c1 >= 'a' && c1 <= 'z') {
c1 -= ('a' - 'A');
}
if (c2 >= 'a' && c2 <= 'z') {
c2 -= ('a' - 'A');
}
if (c1 != c2) {
return c1 < c2 ? -1 : 1;
}
}
} while (c1);
return 0; // strings are equal
}
int Q_strncmp (const char *s1, const char *s2, int n) {
int c1, c2;
do {
c1 = *s1++;
c2 = *s2++;
if (!n--) {
return 0; // strings are equal until end point
}
if (c1 != c2) {
return c1 < c2 ? -1 : 1;
}
} while (c1);
return 0; // strings are equal
}
int Q_stricmp (const char *s1, const char *s2) {
return (s1 && s2) ? Q_stricmpn (s1, s2, 99999) : -1;
}
int __cdecl Q_stricmpwild(const char *wild, const char *s)
{
char charWild;
int delta;
char charRef;
assert( wild );
assert( s );
do
{
charWild = *wild++;
if ( charWild == '*' )
{
if ( !*wild )
{
return 0;
}
if ( *s && !Q_stricmpwild(wild - 1, s + 1) )
{
return 0;
}
}
else
{
charRef = *s++;
if ( charWild != charRef && charWild != '?' )
{
delta = tolower(charWild) - tolower(charRef);
if ( delta != 0 )
{
return 1;
}
}
}
}
while ( charWild );
return 0;
}
char *Q_strlwr( char *s1 ) {
char *s;
s = s1;
while ( *s ) {
*s = tolower(*s);
s++;
}
return s1;
}
char *Q_strupr( char *s1 ) {
char *s;
s = s1;
while ( *s ) {
*s = toupper(*s);
s++;
}
return s1;
}
/*
=============
Q_bstrcpy
Same like strcpy but it does always a byte wise copying so source and destiantion can overlap
Use is to fix up a problem with Info_SetValueForKey() which happened on some newer machines
=============
*/
void Q_bstrcpy(char* dest, const char* src){
while(*src)
*dest++ = *src++;
*dest = 0;
}
// never goes past bounds or leaves without a terminating 0
void Q_strncat( char *dest, int size, const char *src ) {
int l1;
l1 = strlen( dest );
if ( l1 >= size ) {
Com_Error( ERR_FATAL, "Q_strncat: already overflowed" );
}
Q_strncpyz( dest + l1, src, size - l1 );
}
/*
=============
Q_strlcat
Same like strcat but with an additional copylimit parameter
=============
*/
void Q_strlcat( char *dest, size_t size, const char *src, int cpylimit)
{
int l1;
l1 = strlen(dest);
if ( l1 >= size )
{
return;
// Com_Error( ERR_FATAL, "Q_strlcat: already overflowed" );
}
if(cpylimit >= (size - l1) || cpylimit < 0)
{
cpylimit = size - l1 - 1;
}
memcpy(dest + l1, src, cpylimit);
dest[l1 + cpylimit] = 0;
}
/*
=============
Q_strrepl
=============
*/
void Q_strnrepl( char *dest, size_t size, const char *src, const char* find, const char* replacement)
{
char* new;
*dest = 0;
int findlen = strlen(find);
while((new = strstr(src, find)) != NULL)
{
Q_strlcat(dest, size, src, new - src);
Q_strlcat(dest, size, replacement, -1);
src = &new[findlen];
}
Q_strlcat(dest, size, src, -1);
}
/*
* Find the first occurrence of find in s.
*/
const char *Q_stristr( const char *s, const char *find)
{
char c, sc;
size_t len;
if ((c = *find++) != 0)
{
if (c >= 'a' && c <= 'z')
{
c -= ('a' - 'A');
}
len = strlen(find);
do
{
do
{
if ((sc = *s++) == 0)
return NULL;
if (sc >= 'a' && sc <= 'z')
{
sc -= ('a' - 'A');
}
} while (sc != c);
} while (Q_stricmpn(s, find, len) != 0);
s--;
}
return s;
}
int Q_strichr( const char *s, char find)
{
char sc;
int i = 0;
if (find >= 'a' && find <= 'z')
{
find -= ('a' - 'A');
}
while(qtrue)
{
if ((sc = *s++) == 0)
return -1;
if(sc >= 'a' && sc <= 'z')
{
sc -= ('a' - 'A');
}
if(sc == find)
return i;
i++;
}
return -1;
}
int Q_PrintStrlen( const char *string ) {
int len;
const char *p;
if( !string ) {
return 0;
}
len = 0;
p = string;
while( *p ) {
if( Q_IsColorString( p ) ) {
p += 2;
continue;
}
p++;
len++;
}
return len;
}
char *Q_CleanStr( char *string ) {
char* d;
char* s;
unsigned int c;
s = string;
d = string;
while ((c = (byte)*s) != 0 ) {
if ( Q_IsColorString( s ) ) {
s++;
}
else if ( c >= 0x20 ) {
*d++ = c;
}
s++;
}
*d = '\0';
return string;
}
int Q_CountChar(const char *string, char tocount)
{
int count;
for(count = 0; *string; string++)
{
if(*string == tocount)
count++;
}
return count;
}
int QDECL Com_sprintf(char *dest, int size, const char *fmt, ...)
{
int len;
va_list argptr;
va_start (argptr,fmt);
len = Q_vsnprintf(dest, size, fmt, argptr);
va_end (argptr);
if(len >= size)
Com_Printf(CON_CHANNEL_SYSTEM,"Com_sprintf: Output length %d too short, require %d bytes.\n", size, len + 1);
return len;
}
int Com_sprintfPos(char *dest, const int destSize, int *destPos, const char *fmt, ...)
{
char *destMod;
int destModSize;
int len;
va_list va;
va_start(va, fmt);
if ( *destPos < destSize - 1 )
{
destMod = &dest[*destPos];
destModSize = destSize - *destPos;
len = Q_vsnprintf(destMod, destSize - *destPos, fmt, va);
destMod[destModSize - 1] = 0;
if ( len != destModSize && len != -1 )
{
*destPos += len;
}
else
{
*destPos = destSize - 1;
}
return len;
}
return -1;
}
/*
============
va
does a varargs printf into a temp buffer, so I don't need to have
varargs versions of all text functions.
============
*/
/***********
See q_shared.h for details.
***********/
char* QDECL va_replacement(char *dest, int size, const char *fmt, ...)
{
int len;
va_list argptr;
va_start (argptr,fmt);
len = Q_vsnprintf(dest, size, fmt, argptr);
va_end (argptr);
if(len >= size)
Com_Printf(CON_CHANNEL_SYSTEM,"Com_sprintf: Output length %d too short, require %d bytes.\n", size, len + 1);
return dest;
}
/*
============
Com_TruncateLongString
Assumes buffer is atleast TRUNCATE_LENGTH big
============
*/
void Com_TruncateLongString( char *buffer, const char *s )
{
int length = strlen( s );
if( length <= TRUNCATE_LENGTH )
Q_strncpyz( buffer, s, TRUNCATE_LENGTH );
else
{
Q_strncpyz( buffer, s, ( TRUNCATE_LENGTH / 2 ) - 3 );
Q_strncat( buffer, TRUNCATE_LENGTH, " ... " );
Q_strncat( buffer, TRUNCATE_LENGTH, s + length - ( TRUNCATE_LENGTH / 2 ) + 3 );
}
}
/*
=====================================================================
INFO STRINGS
=====================================================================
*/
/*
==================
Info_Validate
Some characters are illegal in info strings because they
can mess up the server's parsing
==================
*/
qboolean Info_Validate( const char *s ) {
if ( strchr( s, '\"' ) ) {
return qfalse;
}
if ( strchr( s, ';' ) ) {
return qfalse;
}
return qtrue;
}
/*
===================
Info_RemoveKey
===================
*/
void Info_RemoveKey( char *s, const char *key ) {
char *start;
char pkey[BIG_INFO_KEY];
char value[BIG_INFO_VALUE];
char *o;
if ( strlen( s ) >= BIG_INFO_STRING ) {
Com_Printf(CON_CHANNEL_SYSTEM, "Error: Info_RemoveKey: oversize infostring\n" );
}
if (strchr (key, '\\')) {
return;
}
while (1)
{
start = s;
if (*s == '\\')
s++;
o = pkey;
while (*s != '\\')
{
if (!*s)
return;
*o++ = *s++;
}
*o = 0;
s++;
o = value;
while (*s != '\\' && *s)
{
if (!*s)
return;
*o++ = *s++;
}
*o = 0;
if (!strcmp (key, pkey) )
{
Q_bstrcpy(start, s); // remove this part - Bugfix using Q_bstrcpy() instaed strcpy()
return;
}
if (!*s)
return;
}
}
/*
===============
Info_ValueForKey
Searches the string for the given
key and returns the associated value, or an empty string.
FIXME: overflow check?
===============
*/
char *Info_ValueForKey( const char *s, const char *key ) {
char pkey[BIG_INFO_KEY];
static char value[2][MAX_INFO_VALUE]; // use two buffers so compares
// work without stomping on each other
static int valueindex = 0;
char *o;
if ( !s || !key ) {
return "";
}
valueindex ^= 1;
if (*s == '\\')
s++;
while (1)
{
o = pkey;
while (*s != '\\')
{
if (!*s)
return "";
*o++ = *s++;
if(o +1 >= pkey + sizeof(pkey))
{
Com_Printf(CON_CHANNEL_SYSTEM, "Error: Info_ValueForKey: oversize key in infostring\n" );
return "";
}
}
*o = 0;
s++;
o = value[valueindex];
while (*s != '\\' && *s)
{
*o++ = *s++;
if(o +1 >= value[valueindex] + sizeof(value[0]))
{
Com_Printf(CON_CHANNEL_SYSTEM, "Error: Info_ValueForKey: oversize key in infostring\n" );
return "";
}
}
*o = 0;
if (!Q_stricmp (key, pkey) )
return value[valueindex];
if (!*s)
break;
s++;
}
return "";
}
/*
==================
Info_SetValueForKey
Changes or adds a key/value pair
==================
*/
void Info_SetValueForKey( char *s, const char *key, const char *value ) {
char newi[BIG_INFO_STRING];
if ( strlen( s ) >= BIG_INFO_STRING ) {
Com_PrintWarning(CON_CHANNEL_SYSTEM,"Unexpected error - Info_SetValueForKey: oversize infostring\n" );
}
if (strchr (key, '\\'))
{
Com_PrintWarning(CON_CHANNEL_SYSTEM,"Can't use keys with a \\\n");
Com_DPrintf(CON_CHANNEL_SYSTEM,"Bad key: %s value: %s\n", key, value);
return;
}
if (strchr (value, '\\'))
{
Com_PrintWarning(CON_CHANNEL_SYSTEM,"Can't use values with a \\\n");
Com_DPrintf(CON_CHANNEL_SYSTEM,"Bad value: %s key: %s\n", value, key);
return;
}
if (strchr (key, ';'))
{
Com_PrintWarning(CON_CHANNEL_SYSTEM,"Can't use keys with a semicolon\n");
Com_DPrintf(CON_CHANNEL_SYSTEM,"Bad key: %s value: %s\n", key, value);
return;
}
if (strchr (value, ';'))
{
Com_PrintWarning(CON_CHANNEL_SYSTEM,"Can't use values with a semicolon\n");
Com_DPrintf(CON_CHANNEL_SYSTEM,"Bad value: %s key: %s\n", value, key);
return;
}
if (strchr (key, '\"'))
{
Com_PrintWarning(CON_CHANNEL_SYSTEM,"Can't use keys with a \"\n");
Com_DPrintf(CON_CHANNEL_SYSTEM,"Bad key: %s value: %s\n", key, value);
return;
}
if (strchr (value, '\"'))
{
Com_PrintWarning(CON_CHANNEL_SYSTEM,"Can't use values with a \"\n");
Com_DPrintf(CON_CHANNEL_SYSTEM,"Bad value: %s key: %s\n", value, key);
return;
}
Info_RemoveKey (s, key);
if (!value || !strlen(value))
return;
Com_sprintf (newi, sizeof(newi), "\\%s\\%s", key, value);
if (strlen(newi) + strlen(s) > BIG_INFO_STRING)
{
Com_PrintWarning(CON_CHANNEL_SYSTEM,"Info string length exceeded\n");
return;
}
strcat (newi, s);
strcpy (s, newi);
}
void Info_Print( const char *s ) {
char key[BIG_INFO_KEY];
char value[BIG_INFO_VALUE];
char *o;
int l;
if (*s == '\\')
s++;
while (*s)
{
o = key;
while (*s && *s != '\\')
*o++ = *s++;
l = o - key;
if (l < 20)
{
Com_Memset (o, ' ', 20-l);
key[20] = 0;
}
else
*o = 0;
Com_Printf(CON_CHANNEL_SYSTEM,"%s ", key);
if (!*s)
{
Com_Printf(CON_CHANNEL_SYSTEM,"MISSING VALUE\n");
return;
}
o = value;
s++;
while (*s && *s != '\\')
*o++ = *s++;
*o = 0;
if (*s)
s++;
Com_Printf(CON_CHANNEL_SYSTEM,"%s\n", value);
}
}
static void Info_EncodeChar(unsigned char chr, unsigned char* encodedchr)
{
Com_sprintf((char*)encodedchr, 0x7fffffff, "%%%X", (char)chr);
}
static void Info_Encode(const char* inurl, int encodelen, char* outencodedurl, int len)
{
int i, y;
unsigned char* url = (unsigned char*)inurl;
unsigned char* encodedurl = (unsigned char*)outencodedurl;
for(i = 0, y = 0; y < len -4 && i < encodelen; i++)
{
switch(url[i])
{
case '\\':
case '\"':
case ';':
Info_EncodeChar(url[i], &encodedurl[y]);
y += 3;
break;
default:
if(url[i] < 0x20)
{
Info_EncodeChar(url[i], &encodedurl[y]);
y += 3;
}else{
encodedurl[y] = url[i];
++y;
}
break;
}
}
encodedurl[y] = '\0';
}
char Info_DecodeChar(unsigned char* encodedchr)
{
char decoded;
char encoded[4];
encoded[0] = encodedchr[0];
encoded[1] = encodedchr[1];
encoded[2] = encodedchr[2];
encoded[3] = encodedchr[3];
if(encoded[0] != '%'){
return ' ';
}
decoded = strtol(&encoded[1], NULL, 16);
return decoded;
}
int Info_Decode(const char* inurl, char* outdecodedurl, int buflen)
{
int i, y, k;
unsigned char* url = (unsigned char*)inurl;
unsigned char* decodedurl = (unsigned char*)outdecodedurl;
for(i = 0, y = 0; url[y] && i < buflen; i++)
{
if(url[y] == '%')
{
decodedurl[i] = Info_DecodeChar(&url[y]);
for(k = 0; url[y] && k < 3; ++k)
++y;
}else{
decodedurl[i] = url[y];
++y;
}
}
return i;
}
void Info_SetEncodedValueForKey( char *s, const char *key, const char *value, int len )
{
char codedvalue[BIG_INFO_STRING];
Info_Encode(value, len, codedvalue, sizeof(codedvalue));
Info_SetValueForKey( s, key, codedvalue );
}
int Info_DecodedValueForKey( const char *s, const char *key, char *out, int outbuflen)
{
const char* value;
value = Info_ValueForKey( s, key );
return Info_Decode(value, out, outbuflen);
}
/*
===============
SV_ExpandNewlines
Converts newlines to "\n" so a line prints nicer
===============
*/
char *SV_ExpandNewlines( char *in ) {
static char string[1024];
int l;
l = 0;
while ( *in && l < sizeof(string) - 3 ) {
if ( *in == '\n' ) {
string[l++] = '\\';
string[l++] = 'n';
} else {
string[l++] = *in;
}
in++;
}
string[l] = 0;
return string;
}
/*
============
Q_strchrrepl
Parses the string for a given char and replace it with a replacement char
============
*/
void Q_strchrrepl(char *string, char torepl, char repl){
for(;*string != 0x00;string++){
if(*string == torepl){
*string = repl;
}
}
}
//============================================================================
/*****************************************************
*** Parsing files ***
*****************************************************/
static qboolean parse_inquotes = qfalse;
static char* parse_lastpos;
void Com_ParseReset(){
parse_inquotes = qfalse;
parse_lastpos = NULL;