/*
Copyright (C) 1996-1997 Id Software, Inc.
+Copyright (C) 2000-2020 DarkPlaces contributors
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
#ifndef COMMON_H
#define COMMON_H
+#include <stdarg.h>
+#include <assert.h>
+#include "qtypes.h"
+#include "qdefs.h"
-// MSVC has a different name for several standard functions
+/// MSVC has a different name for several standard functions
#ifdef WIN32
-# define strcasecmp stricmp
-# define strncasecmp strnicmp
+# define strcasecmp _stricmp
+# define strncasecmp _strnicmp
+#else
+#include "strings.h"
#endif
// Create our own define for Mac OS X
//============================================================================
+#define ContainerOf(ptr, type, member) ((type *)((char *)(ptr) - offsetof(type, member)))
+
typedef struct sizebuf_s
{
- qboolean allowoverflow; // if false, do a Sys_Error
- qboolean overflowed; // set to true if the buffer size failed
- qbyte *data;
- mempool_t *mempool;
+ qbool allowoverflow; ///< if false, do a Sys_Error
+ qbool overflowed; ///< set to true if the buffer size failed
+ unsigned char *data;
int maxsize;
int cursize;
+ int readcount;
+ qbool badread; // set if a read goes beyond end of message
} sizebuf_t;
-void SZ_Alloc (sizebuf_t *buf, int startsize, const char *name);
-void SZ_Free (sizebuf_t *buf);
void SZ_Clear (sizebuf_t *buf);
-void *SZ_GetSpace (sizebuf_t *buf, int length);
-void SZ_Write (sizebuf_t *buf, const void *data, int length);
-void SZ_Print(sizebuf_t *buf, const char *data); // strcats onto the sizebuf
+unsigned char *SZ_GetSpace (sizebuf_t *buf, int length);
+void SZ_Write (sizebuf_t *buf, const unsigned char *data, int length);
void SZ_HexDumpToConsole(const sizebuf_t *buf);
-void Com_HexDumpToConsole(const qbyte *data, int size);
+void Com_HexDumpToConsole(const unsigned char *data, int size);
+
+unsigned short CRC_Block(const unsigned char *data, size_t size);
+unsigned short CRC_Block_CaseInsensitive(const unsigned char *data, size_t size); // for hash lookup functions that use strcasecmp for comparison
-unsigned short CRC_Block(qbyte *data, int size);
+unsigned char COM_BlockSequenceCRCByteQW(unsigned char *base, int length, int sequence);
+
+// these are actually md4sum (mdfour.c)
+unsigned Com_BlockChecksum (void *buffer, int length);
+void Com_BlockFullChecksum (void *buffer, int len, unsigned char *outbuf);
+
+void COM_Init_Commands(void);
//============================================================================
// Endianess handling
//============================================================================
-// We use BSD-style defines: BYTE_ORDER is defined to either BIG_ENDIAN or LITTLE_ENDIAN
+// check mem_bigendian if you need to know the system byte order
-// Initializations
-#if !defined(BYTE_ORDER) || !defined(LITTLE_ENDIAN) || !defined(BIG_ENDIAN) || (BYTE_ORDER != LITTLE_ENDIAN && BYTE_ORDER != BIG_ENDIAN)
-# undef BYTE_ORDER
-# undef LITTLE_ENDIAN
-# undef BIG_ENDIAN
-# define LITTLE_ENDIAN 1234
-# define BIG_ENDIAN 4321
-#endif
+/*! \name Byte order functions.
+ * @{
+ */
-// If we still don't know the CPU endianess at this point, we try to guess
-#ifndef BYTE_ORDER
-# if defined(WIN32)
-# define BYTE_ORDER LITTLE_ENDIAN
-# else
-# warning "Unable to determine the CPU endianess. Defaulting to little endian"
-# define BYTE_ORDER LITTLE_ENDIAN
-# endif
-#endif
+// unaligned memory access crashes on some platform, so always read bytes...
+#define BigShort(l) BuffBigShort((unsigned char *)&(l))
+#define LittleShort(l) BuffLittleShort((unsigned char *)&(l))
+#define BigLong(l) BuffBigLong((unsigned char *)&(l))
+#define LittleLong(l) BuffLittleLong((unsigned char *)&(l))
+#define BigFloat(l) BuffBigFloat((unsigned char *)&(l))
+#define LittleFloat(l) BuffLittleFloat((unsigned char *)&(l))
+/// Extract a big endian 32bit float from the given \p buffer.
+float BuffBigFloat (const unsigned char *buffer);
-short ShortSwap (short l);
-int LongSwap (int l);
-float FloatSwap (float f);
+/// Extract a big endian 32bit int from the given \p buffer.
+int BuffBigLong (const unsigned char *buffer);
-#if BYTE_ORDER == LITTLE_ENDIAN
-// little endian
-#define BigShort(l) ShortSwap(l)
-#define LittleShort(l) (l)
-#define BigLong(l) LongSwap(l)
-#define LittleLong(l) (l)
-#define BigFloat(l) FloatSwap(l)
-#define LittleFloat(l) (l)
-#else
-// big endian
-#define BigShort(l) (l)
-#define LittleShort(l) ShortSwap(l)
-#define BigLong(l) (l)
-#define LittleLong(l) LongSwap(l)
-#define BigFloat(l) (l)
-#define LittleFloat(l) FloatSwap(l)
-#endif
+/// Extract a big endian 16bit short from the given \p buffer.
+short BuffBigShort (const unsigned char *buffer);
+
+/// Extract a little endian 32bit float from the given \p buffer.
+float BuffLittleFloat (const unsigned char *buffer);
-unsigned int BuffBigLong (const qbyte *buffer);
-unsigned short BuffBigShort (const qbyte *buffer);
-unsigned int BuffLittleLong (const qbyte *buffer);
-unsigned short BuffLittleShort (const qbyte *buffer);
+/// Extract a little endian 32bit int from the given \p buffer.
+int BuffLittleLong (const unsigned char *buffer);
+/// Extract a little endian 16bit short from the given \p buffer.
+short BuffLittleShort (const unsigned char *buffer);
+
+/// Encode a big endian 32bit int to the given \p buffer
+void StoreBigLong (unsigned char *buffer, unsigned int i);
+
+/// Encode a big endian 16bit int to the given \p buffer
+void StoreBigShort (unsigned char *buffer, unsigned short i);
+
+/// Encode a little endian 32bit int to the given \p buffer
+void StoreLittleLong (unsigned char *buffer, unsigned int i);
+
+/// Encode a little endian 16bit int to the given \p buffer
+void StoreLittleShort (unsigned char *buffer, unsigned short i);
+//@}
//============================================================================
+// these versions are purely for internal use, never sent in network protocol
+// (use Protocol_EnumForNumber and Protocol_NumberToEnum to convert)
+typedef enum protocolversion_e
+{
+ PROTOCOL_UNKNOWN,
+ PROTOCOL_DARKPLACES8, ///< added parting messages. WIP
+ PROTOCOL_DARKPLACES7, ///< added QuakeWorld-style movement protocol to allow more consistent prediction
+ PROTOCOL_DARKPLACES6, ///< various changes
+ PROTOCOL_DARKPLACES5, ///< uses EntityFrame5 entity snapshot encoder/decoder which is based on a Tribes networking article at http://www.garagegames.com/articles/networking1/
+ PROTOCOL_DARKPLACES4, ///< various changes
+ PROTOCOL_DARKPLACES3, ///< uses EntityFrame4 entity snapshot encoder/decoder which is broken, this attempted to do partial snapshot updates on a QuakeWorld-like protocol, but it is broken and impossible to fix
+ PROTOCOL_DARKPLACES2, ///< various changes
+ PROTOCOL_DARKPLACES1, ///< uses EntityFrame entity snapshot encoder/decoder which is a QuakeWorld-like entity snapshot delta compression method
+ PROTOCOL_QUAKEDP, ///< darkplaces extended quake protocol (used by TomazQuake and others), backwards compatible as long as no extended features are used
+ PROTOCOL_NEHAHRAMOVIE, ///< Nehahra movie protocol, a big nasty hack dating back to early days of the Quake Standards Group (but only ever used by neh_gl.exe), this is potentially backwards compatible with quake protocol as long as no extended features are used (but in actuality the neh_gl.exe which wrote this protocol ALWAYS wrote the extended information)
+ PROTOCOL_QUAKE, ///< quake (aka netquake/normalquake/nq) protocol
+ PROTOCOL_QUAKEWORLD, ///< quakeworld protocol
+ PROTOCOL_NEHAHRABJP, ///< same as QUAKEDP but with 16bit modelindex
+ PROTOCOL_NEHAHRABJP2, ///< same as NEHAHRABJP but with 16bit soundindex
+ PROTOCOL_NEHAHRABJP3 ///< same as NEHAHRABJP2 but with some changes
+}
+protocolversion_t;
+
+/*! \name Message IO functions.
+ * Handles byte ordering and avoids alignment errors
+ * @{
+ */
+
+void MSG_InitReadBuffer (sizebuf_t *buf, unsigned char *data, int size);
void MSG_WriteChar (sizebuf_t *sb, int c);
void MSG_WriteByte (sizebuf_t *sb, int c);
void MSG_WriteShort (sizebuf_t *sb, int c);
void MSG_WriteLong (sizebuf_t *sb, int c);
-void MSG_WriteFloat (sizebuf_t *sb, float f);
+void MSG_WriteFloat (sizebuf_t *sb, vec_t f);
void MSG_WriteString (sizebuf_t *sb, const char *s);
-void MSG_WriteAngle8i (sizebuf_t *sb, float f);
-void MSG_WriteAngle16i (sizebuf_t *sb, float f);
-void MSG_WriteAngle32f (sizebuf_t *sb, float f);
-void MSG_WriteCoord13i (sizebuf_t *sb, float f);
-void MSG_WriteCoord16i (sizebuf_t *sb, float f);
-void MSG_WriteCoord32f (sizebuf_t *sb, float f);
-void MSG_WriteCoord (sizebuf_t *sb, float f, int protocol);
-void MSG_WriteVector (sizebuf_t *sb, float *v, int protocol);
-void MSG_WriteAngle (sizebuf_t *sb, float f, int protocol);
-
-extern int msg_readcount;
-extern qboolean msg_badread; // set if a read goes beyond end of message
-
-void MSG_BeginReading (void);
-int MSG_ReadLittleShort (void);
-int MSG_ReadBigShort (void);
-int MSG_ReadLittleLong (void);
-int MSG_ReadBigLong (void);
-float MSG_ReadLittleFloat (void);
-float MSG_ReadBigFloat (void);
-char *MSG_ReadString (void);
-int MSG_ReadBytes (int numbytes, unsigned char *out);
-
-#define MSG_ReadChar() (msg_readcount >= net_message.cursize ? (msg_badread = true, -1) : (signed char)net_message.data[msg_readcount++])
-#define MSG_ReadByte() (msg_readcount >= net_message.cursize ? (msg_badread = true, -1) : (unsigned char)net_message.data[msg_readcount++])
+void MSG_WriteUnterminatedString (sizebuf_t *sb, const char *s);
+void MSG_WriteAngle8i (sizebuf_t *sb, vec_t f);
+void MSG_WriteAngle16i (sizebuf_t *sb, vec_t f);
+void MSG_WriteAngle32f (sizebuf_t *sb, vec_t f);
+void MSG_WriteCoord13i (sizebuf_t *sb, vec_t f);
+void MSG_WriteCoord16i (sizebuf_t *sb, vec_t f);
+void MSG_WriteCoord32f (sizebuf_t *sb, vec_t f);
+void MSG_WriteCoord (sizebuf_t *sb, vec_t f, protocolversion_t protocol);
+void MSG_WriteVector (sizebuf_t *sb, const vec3_t v, protocolversion_t protocol);
+void MSG_WriteAngle (sizebuf_t *sb, vec_t f, protocolversion_t protocol);
+
+void MSG_BeginReading (sizebuf_t *sb);
+int MSG_ReadLittleShort (sizebuf_t *sb);
+int MSG_ReadBigShort (sizebuf_t *sb);
+int MSG_ReadLittleLong (sizebuf_t *sb);
+int MSG_ReadBigLong (sizebuf_t *sb);
+float MSG_ReadLittleFloat (sizebuf_t *sb);
+float MSG_ReadBigFloat (sizebuf_t *sb);
+char *MSG_ReadString (sizebuf_t *sb, char *string, size_t maxstring);
+int MSG_ReadBytes (sizebuf_t *sb, int numbytes, unsigned char *out);
+
+#define MSG_ReadChar(sb) ((sb)->readcount >= (sb)->cursize ? ((sb)->badread = true, -1) : (signed char)(sb)->data[(sb)->readcount++])
+#define MSG_ReadByte(sb) ((sb)->readcount >= (sb)->cursize ? ((sb)->badread = true, -1) : (unsigned char)(sb)->data[(sb)->readcount++])
#define MSG_ReadShort MSG_ReadLittleShort
#define MSG_ReadLong MSG_ReadLittleLong
#define MSG_ReadFloat MSG_ReadLittleFloat
-float MSG_ReadAngle8i (void);
-float MSG_ReadAngle16i (void);
-float MSG_ReadAngle32f (void);
-float MSG_ReadCoord13i (void);
-float MSG_ReadCoord16i (void);
-float MSG_ReadCoord32f (void);
-float MSG_ReadCoord (int protocol);
-void MSG_ReadVector (float *v, int protocol);
-float MSG_ReadAngle (int protocol);
-
+float MSG_ReadAngle8i (sizebuf_t *sb);
+float MSG_ReadAngle16i (sizebuf_t *sb);
+float MSG_ReadAngle32f (sizebuf_t *sb);
+float MSG_ReadCoord13i (sizebuf_t *sb);
+float MSG_ReadCoord16i (sizebuf_t *sb);
+float MSG_ReadCoord32f (sizebuf_t *sb);
+float MSG_ReadCoord (sizebuf_t *sb, protocolversion_t protocol);
+void MSG_ReadVector (sizebuf_t *sb, vec3_t v, protocolversion_t protocol);
+float MSG_ReadAngle (sizebuf_t *sb, protocolversion_t protocol);
+//@}
//============================================================================
-extern char com_token[1024];
+typedef float (*COM_WordWidthFunc_t) (void *passthrough, const char *w, size_t *length, float maxWidth); // length is updated to the longest fitting string into maxWidth; if maxWidth < 0, all characters are used and length is used as is
+typedef int (*COM_LineProcessorFunc) (void *passthrough, const char *line, size_t length, float width, qbool isContination);
+int COM_Wordwrap(const char *string, size_t length, float continuationSize, float maxWidth, COM_WordWidthFunc_t wordWidth, void *passthroughCW, COM_LineProcessorFunc processLine, void *passthroughPL);
-int COM_ParseToken(const char **datapointer, int returnnewline);
-int COM_ParseTokenConsole(const char **datapointer);
+extern char com_token[MAX_INPUTLINE];
-extern int com_argc;
-extern const char **com_argv;
+int COM_ParseToken_Simple(const char **datapointer, qbool returnnewline, qbool parsebackslash, qbool parsecomments);
+int COM_ParseToken_QuakeC(const char **datapointer, qbool returnnewline);
+int COM_ParseToken_VM_Tokenize(const char **datapointer, qbool returnnewline);
+int COM_ParseToken_Console(const char **datapointer);
-int COM_CheckParm (const char *parm);
void COM_Init (void);
void COM_Shutdown (void);
-void COM_InitArgv (void);
void COM_InitGameType (void);
-char *va(const char *format, ...);
-// does a varargs printf into a temp buffer
+char *va(char *buf, size_t buflen, const char *format, ...) DP_FUNC_PRINTF(3);
+// does a varargs printf into provided buffer, returns buffer (so it can be called in-line unlike dpsnprintf)
+// GCC with -Werror=c++-compat will error out if static_assert is used even though the macro is valid C11...
+#ifndef __cplusplus
+#define DP_STATIC_ASSERT(expr, str) _Static_assert(expr, str)
+#else
+#define DP_STATIC_ASSERT(expr, str) static_assert(expr, str)
+#endif
// snprintf and vsnprintf are NOT portable. Use their DP counterparts instead
-#define snprintf DO_NOT_USE_SNPRINTF__USE_DPSNPRINTF
-#define vsnprintf DO_NOT_USE_VSNPRINTF__USE_DPVSNPRINTF
+#ifdef snprintf
+# undef snprintf
+#endif
+#define snprintf DP_STATIC_ASSERT(0, "snprintf is forbidden for portability reasons. Use dpsnprintf instead.")
+#ifdef vsnprintf
+# undef vsnprintf
+#endif
+#define vsnprintf DP_STATIC_ASSERT(0, "vsnprintf is forbidden for portability reasons. Use dpvsnprintf instead.")
// dpsnprintf and dpvsnprintf
// return the number of printed characters, excluding the final '\0'
// or return -1 if the buffer isn't big enough to contain the entire string.
// buffer is ALWAYS null-terminated
-extern int dpsnprintf (char *buffer, size_t buffersize, const char *format, ...);
+extern int dpsnprintf (char *buffer, size_t buffersize, const char *format, ...) DP_FUNC_PRINTF(3);
extern int dpvsnprintf (char *buffer, size_t buffersize, const char *format, va_list args);
+// A bunch of functions are forbidden for security reasons (and also to please MSVS 2005, for some of them)
+// LadyHavoc: added #undef lines here to avoid warnings in Linux
+#undef strcat
+#define strcat DP_STATIC_ASSERT(0, "strcat is forbidden for security reasons. Use strlcat or memcpy instead.")
+#undef strncat
+#define strncat DP_STATIC_ASSERT(0, "strncat is forbidden for security reasons. Use strlcat or memcpy instead.")
+#undef strcpy
+#define strcpy DP_STATIC_ASSERT(0, "strcpy is forbidden for security reasons. Use strlcpy or memcpy instead.")
+#undef strncpy
+#define strncpy DP_STATIC_ASSERT(0, "strncpy is forbidden for security reasons. Use strlcpy or memcpy instead.")
+#undef sprintf
+#define sprintf DP_STATIC_ASSERT(0, "sprintf is forbidden for security reasons. Use dpsnprintf instead.")
+
//============================================================================
extern struct cvar_s registered;
extern struct cvar_s cmdline;
+typedef enum userdirmode_e
+{
+ USERDIRMODE_NOHOME, // basedir only
+ USERDIRMODE_HOME, // Windows basedir, general POSIX (~/.)
+ USERDIRMODE_MYGAMES, // pre-Vista (My Documents/My Games/), general POSIX (~/.)
+ USERDIRMODE_SAVEDGAMES, // Vista (%USERPROFILE%/Saved Games/), OSX (~/Library/Application Support/), Linux (~/.config)
+ USERDIRMODE_COUNT
+}
+userdirmode_t;
+
typedef enum gamemode_e
{
GAME_NORMAL,
GAME_HIPNOTIC,
GAME_ROGUE,
+ GAME_QUOTH,
GAME_NEHAHRA,
GAME_NEXUIZ,
+ GAME_XONOTIC,
GAME_TRANSFUSION,
GAME_GOODVSBAD2,
GAME_TEU,
GAME_BATTLEMECH,
GAME_ZYMOTIC,
- GAME_FNIGGIUM,
GAME_SETHERAL,
- GAME_SOM,
GAME_TENEBRAE, // full of evil hackery
GAME_NEOTERIC,
GAME_OPENQUARTZ, //this game sucks
GAME_PRYDON,
- GAME_NETHERWORLD,
+ GAME_DELUXEQUAKE,
GAME_THEHUNTED,
+ GAME_DEFEATINDETAIL2,
+ GAME_DARSANA,
+ GAME_CONTAGIONTHEORY,
+ GAME_EDU2P,
+ GAME_PROPHECY,
+ GAME_BLOODOMNICIDE,
+ GAME_STEELSTORM, // added by motorsep
+ GAME_STEELSTORM2, // added by motorsep
+ GAME_SSAMMO, // added by motorsep
+ GAME_STEELSTORMREVENANTS, // added by motorsep 07/19/2015
+ GAME_TOMESOFMEPHISTOPHELES, // added by motorsep
+ GAME_STRAPBOMB, // added by motorsep for Urre
+ GAME_MOONHELM,
+ GAME_VORETOURNAMENT,
+ GAME_DOOMBRINGER, // added by Cloudwalk for kristus
+ GAME_BATTLEMETAL, // added by Cloudwalk for Subject9x
+ GAME_COUNT
}
gamemode_t;
+// Master switch for some hacks/changes that eventually should become cvars.
+#define IS_NEXUIZ_DERIVED(g) ((g) == GAME_NEXUIZ || (g) == GAME_XONOTIC || (g) == GAME_VORETOURNAMENT)
+// Pre-csqcmodels era.
+#define IS_OLDNEXUIZ_DERIVED(g) ((g) == GAME_NEXUIZ || (g) == GAME_VORETOURNAMENT)
+
extern gamemode_t gamemode;
extern const char *gamename;
+extern const char *gamenetworkfiltername;
extern const char *gamedirname1;
extern const char *gamedirname2;
extern const char *gamescreenshotname;
extern const char *gameuserdirname;
extern char com_modname[MAX_OSPATH];
+void COM_ChangeGameTypeForGameDirs(void);
+
void COM_ToLowerString (const char *in, char *out, size_t size_out);
void COM_ToUpperString (const char *in, char *out, size_t size_out);
int COM_StringBeginsWith(const char *s, const char *match);
int COM_ReadAndTokenizeLine(const char **text, char **argv, int maxargc, char *tokenbuf, int tokenbufsize, const char *commentprefix);
-typedef struct stringlist_s
-{
- struct stringlist_s *next;
- char *text;
-} stringlist_t;
-
-int matchpattern(char *in, char *pattern, int caseinsensitive);
-stringlist_t *stringlistappend(stringlist_t *current, char *text);
-void stringlistfree(stringlist_t *current);
-stringlist_t *stringlistsort(stringlist_t *start);
-stringlist_t *listdirectory(const char *path);
-void freedirectory(stringlist_t *list);
-
-char *SearchInfostring(const char *infostring, const char *key);
-
+size_t COM_StringLengthNoColors(const char *s, size_t size_s, qbool *valid);
+qbool COM_StringDecolorize(const char *in, size_t size_in, char *out, size_t size_out, qbool escape_carets);
+void COM_ToLowerString (const char *in, char *out, size_t size_out);
+void COM_ToUpperString (const char *in, char *out, size_t size_out);
// strlcat and strlcpy, from OpenBSD
// Most (all?) BSDs already have them
#endif
#ifndef HAVE_STRLCAT
-/*
- * Appends src to string dst of size siz (unlike strncat, siz is the
- * full size of dst, not space left). At most siz-1 characters
- * will be copied. Always NUL terminates (unless siz <= strlen(dst)).
- * Returns strlen(src) + MIN(siz, strlen(initial dst)).
- * If retval >= siz, truncation occurred.
+/*!
+ * Appends src to string dst of size dsize (unlike strncat, dsize is the
+ * full size of dst, not space left). At most dsize-1 characters
+ * will be copied. Always NUL terminates (unless dsize <= strlen(dst)).
+ * Returns strlen(src) + MIN(dsize, strlen(initial dst)).
+ * If retval >= dsize, truncation occurred.
*/
-size_t strlcat(char *dst, const char *src, size_t siz);
+size_t strlcat(char *dst, const char *src, size_t dsize);
#endif // #ifndef HAVE_STRLCAT
#ifndef HAVE_STRLCPY
-/*
- * Copy src to string dst of size siz. At most siz-1 characters
- * will be copied. Always NUL terminates (unless siz == 0).
- * Returns strlen(src); if retval >= siz, truncation occurred.
+/*!
+ * Copy string src to buffer dst of size dsize. At most dsize-1
+ * chars will be copied. Always NUL terminates (unless dsize == 0).
+ * Returns strlen(src); if retval >= dsize, truncation occurred.
*/
-size_t strlcpy(char *dst, const char *src, size_t siz);
+size_t strlcpy(char *dst, const char *src, size_t dsize);
#endif // #ifndef HAVE_STRLCPY
+void FindFraction(double val, int *num, int *denom, int denomMax);
+
+// decodes XPM file to XPM array (as if #include'd)
+char **XPM_DecodeString(const char *in);
+
+size_t base64_encode(unsigned char *buf, size_t buflen, size_t outbuflen);
+
+#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
+
+float Com_CalcRoll (const vec3_t angles, const vec3_t velocity, const vec_t angleval, const vec_t velocityval);
+
#endif