ref: facd1d4e9b6a5c1cd9c5faf96f7520c62746144b
dir: /fs.c/
#include <u.h> #include <libc.h> #include <stdio.h> #include <bio.h> #include "quakedef.h" u16int crcn; char fsdir[Nfspath]; typedef struct Lump Lump; typedef struct Pak Pak; typedef struct Paklist Paklist; enum{ Npakhdr = 4+4+4, Npaksz = 56+4+4, Npaklmp = 2048, Npak0lmp = 339, Npak0crc = 0x80d5, Fhunk = 0, Fcache, Fstack }; struct Lump{ char f[Npath]; int ofs; int len; }; struct Pak{ char f[Nfspath]; Biobuf *bf; Lump *l; Lump *e; }; struct Paklist{ char f[Nfspath]; Pak *p; Paklist *pl; }; static Paklist *pkl; static u16int pop[] = { 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x6600, 0x0000, 0x0000, 0x0000, 0x6600, 0x0000, 0x0000, 0x0066, 0x0000, 0x0000, 0x0000, 0x0000, 0x0067, 0x0000, 0x0000, 0x6665, 0x0000, 0x0000, 0x0000, 0x0000, 0x0065, 0x6600, 0x0063, 0x6561, 0x0000, 0x0000, 0x0000, 0x0000, 0x0061, 0x6563, 0x0064, 0x6561, 0x0000, 0x0000, 0x0000, 0x0000, 0x0061, 0x6564, 0x0064, 0x6564, 0x0000, 0x6469, 0x6969, 0x6400, 0x0064, 0x6564, 0x0063, 0x6568, 0x6200, 0x0064, 0x6864, 0x0000, 0x6268, 0x6563, 0x0000, 0x6567, 0x6963, 0x0064, 0x6764, 0x0063, 0x6967, 0x6500, 0x0000, 0x6266, 0x6769, 0x6a68, 0x6768, 0x6a69, 0x6766, 0x6200, 0x0000, 0x0062, 0x6566, 0x6666, 0x6666, 0x6666, 0x6562, 0x0000, 0x0000, 0x0000, 0x0062, 0x6364, 0x6664, 0x6362, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0062, 0x6662, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0061, 0x6661, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x6500, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x6400, 0x0000, 0x0000, 0x0000 }; /* this is a 16 bit, non-reflected CRC using the polynomial 0x1021 and the * initial and final xor values shown below; in other words, the CCITT standard * CRC used by XMODEM */ enum{ Ncrc0 = 0xffff, Nxor = 0 }; static u16int crct[] ={ 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7, 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef, 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6, 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de, 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485, 0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d, 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4, 0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc, 0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823, 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b, 0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12, 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a, 0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41, 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49, 0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70, 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78, 0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f, 0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067, 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e, 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256, 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d, 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405, 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c, 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634, 0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab, 0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3, 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a, 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92, 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9, 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1, 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8, 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0 }; static int notid1; static int loadsize; static uchar *loadbuf; static cache_user_t *loadcache; static Biobuf *demobf; static vlong demoofs; #define GBIT32(p) ((p)[0]|((p)[1]<<8)|((p)[2]<<16)|((p)[3]<<24)) #define PBIT32(p,v) (p)[0]=(v);(p)[1]=(v)>>8;(p)[2]=(v)>>16;(p)[3]=(v)>>24 static Biobuf * bopen(char *f, int m, int arm) { Biobuf *bf; bf = Bopen(f, m); if(bf == nil) return nil; if(arm) Blethal(bf, nil); return bf; } static long eread(Biobuf *bf, void *u, long n) { if(Bread(bf, u, n) != n) fatal("eread: short read: %r"); return n; } static u8int get8(Biobuf *bf) { u8int v; eread(bf, &v, 1); return v; } static u16int get16(Biobuf *bf) { u16int v; v = get8(bf); return v | get8(bf) << 8; } static u32int get32(Biobuf *bf) { u32int v; v = get16(bf); return v | get16(bf) << 16; } static float getfl(Biobuf *bf) { union{ float v; u32int u; } u; u.u = get32(bf); return u.v; } static u16int get16b(Biobuf *bf) { u16int v; v = get8(bf); return v << 8 | get8(bf); } static u32int get32b(Biobuf *bf) { u32int v; v = get16(bf); return v << 16 | get16(bf); } static void ewrite(Biobuf *bf, void *u, long n) { if(Bwrite(bf, u, n) != n) fatal("eread: short write: %r"); } static void put32(Biobuf *bf, u32int v) { uchar u[4]; PBIT32(u, v); ewrite(bf, u, 4); } static void putfl(Biobuf *bf, float v) { union{ float v; u32int u; } w; w.v = v; put32(bf, w.u); } static vlong bsize(Biobuf *bf) { vlong n; Dir *d; d = dirfstat(Bfildes(bf)); if(d == nil) sysfatal("bstat: %r"); n = d->length; free(d); return n; } static Pak * pak(char *f) { int n, ofs, len, nlmp; uchar u[8]; Biobuf *bf; Lump *l; Pak *p; bf = bopen(f, OREAD, 1); if(bf == nil) return nil; memset(u, 0, sizeof u); eread(bf, u, 4); if(memcmp(u, "PACK", 4) != 0) fatal("pak %s: invalid pak file", f); ofs = get32(bf); len = get32(bf); nlmp = len / Npaksz; if(nlmp > Npaklmp) fatal("pak %s: invalid lump number %d", f, nlmp); if(nlmp != Npak0lmp) notid1 = 1; l = Hunk_AllocName(nlmp * sizeof *l, "pak"); p = Hunk_Alloc(sizeof *p); strncpy(p->f, f, sizeof(p->f)-1); p->bf = bf; p->l = l; p->e = l + nlmp; Bseek(bf, ofs, 0); initcrc(); while(l < p->e){ eread(bf, l->f, 56); for(n=0; n<56; n++) crc(l->f[n]); eread(bf, u, 8); for(n=0; n<8; n++) crc(u[n]); l->ofs = GBIT32(u); l->len = GBIT32(u+4); l++; } if(crcn != Npak0crc) notid1 = 1; return p; } static void pakdir(char *d) { int n; char f[Nfspath]; Paklist *pl; Pak *p; strncpy(fsdir, d, sizeof(fsdir)-1); pl = Hunk_Alloc(sizeof *pl); strncpy(pl->f, d, sizeof(pl->f)-1); pl->pl = pkl; pkl = pl; for(n=0; ; n++){ snprint(f, sizeof f, "%s/pak%d.pak", d, n); p = pak(f); if(p == nil){ dprint("pakdir: can't open %s: %r", f); break; } pl = Hunk_Alloc(sizeof *pl); pl->p = p; pl->pl = pkl; pkl = pl; } } static void initns(void) { int i; char d[Nfspath], *e; memset(d, 0, sizeof d); i = COM_CheckParm("-basedir"); if(i != 0 && i < com_argc - 1) strncpy(d, com_argv[i+1], sizeof(d)-1); else strncpy(d, host_parms.basedir, sizeof(d)-1); e = d + strlen(d) - 1; if(e > d && *e == '/') *e = 0; pakdir(va("%s%s", d, "/id1")); if(COM_CheckParm("-rogue")) pakdir(va("%s%s", d, "/rogue")); if(COM_CheckParm("-hipnotic")) pakdir(va("%s%s", d, "/hipnotic")); i = COM_CheckParm("-game"); if(i != 0 && i < com_argc - 1){ notid1 = 1; pakdir(va("%s/%s", d, com_argv[i+1])); } } static Biobuf * openlmp(char *f, int *len) { char d[Nfspath]; Biobuf *bf; Paklist *pl; Pak *p; Lump *l; for(pl=pkl; pl != nil; pl=pl->pl){ if(pl->p != nil){ p = pl->p; l = p->l; while(l < p->e){ if(strcmp(l->f, f) == 0){ Bseek(p->bf, l->ofs, 0); if(len != nil) *len = l->len; return p->bf; } l++; } continue; } snprint(d, sizeof d, "%s/%s", pl->f, f); if(access(d, AREAD) < 0) continue; bf = bopen(d, OREAD, 1); if(bf == nil) return nil; if(len != nil) *len = bsize(bf); return bf; } werrstr("openlmp %s: not found", f); return nil; } static void closelmp(Biobuf *bf) { Paklist *pl; for(pl=pkl; pl!=nil; pl=pl->pl) if(pl->p && pl->p->bf == bf) return; Bterm(bf); } static uchar * loadlmp(char *f, int mth, int *n) { int m; char r[32]; uchar *buf; Biobuf *bf; bf = openlmp(f, &m); if(bf == nil) return nil; radix(f, r); buf = nil; switch(mth){ case Fhunk: buf = Hunk_AllocName(m + 1, r); break; case Fcache: buf = Cache_Alloc(loadcache, m + 1, r); break; case Fstack: buf = m+1 <= loadsize ? loadbuf : Hunk_TempAlloc(m+1); } if(buf == nil) fatal("loadlmp %s %d: memory allocation failed: %r", f, m+1); buf[m] = 0; Draw_BeginDisc(); eread(bf, buf, m); closelmp(bf); Draw_EndDisc(); if(n != nil) *n = m; return buf; } static void path(void) { Paklist *pl; for(pl=pkl; pl!=nil; pl=pl->pl) if(pl->p) Con_Printf("%s (%zd files)\n", pl->p->f, pl->p->e - pl->p->l); else Con_Printf("%s\n", pl->f); } static void chkreg(void) { u16int *p; Biobuf *bf; Cvar_RegisterVariable(®istered); bf = openlmp("gfx/pop.lmp", nil); if(bf == nil){ dprint("chkreg: shareware version"); if(notid1) fatal("chkreg: phase error -- %r"); return; } p = pop; while(p < pop + nelem(pop)) if(*p++ != get16b(bf)) fatal("chkreg: corrupted pop lump"); closelmp(bf); setcvar("registered", "1"); dprint("chkreg: registered version"); } void * loadhunklmp(char *f, int *n) { return loadlmp(f, Fhunk, n); } void * loadcachelmp(char *f, cache_user_t *c) { loadcache = c; loadlmp(f, Fcache, nil); return c->data; } void * loadstklmp(char *f, void *buf, int nbuf, int *n) { loadbuf = buf; loadsize = nbuf; return loadlmp(f, Fstack, n); } void pointlmp(void) { int i, n, nv; char f[Nfspath]; Biobuf *bf; vec3_t v3; vec_t *v; particle_t *p; snprint(f, sizeof f, "maps/%s.pts", sv.name); bf = openlmp(f, &n); if(bf == nil){ Con_Printf("pointlmp: can't open %s: %r\n", f); return; } nv = 0; for(;;){ if(n < 3*4+3) break; for(i=0, v=v3; i<3; i++){ *v++ = getfl(bf); Bseek(bf, 1, 1); } n -= 3*4+3; nv++; if(free_particles == nil){ Con_Printf("pointlmp: insufficient free particles\n"); break; } p = free_particles; free_particles = p->next; p->next = active_particles; active_particles = p; p->die = 99999; p->color = -nv & 15; p->type = pt_static; VectorCopy(vec3_origin, p->vel); VectorCopy(v3, p->org); } closelmp(bf); Con_Printf("pointlmp: %d points read\n", nv); } void endlmp(void) { closelmp(demobf); demobf = nil; } int rlmpmsg(void) { int n; vec_t *f; Bseek(demobf, demoofs, 0); net_message.cursize = get32(demobf); VectorCopy(cl.mviewangles[0], cl.mviewangles[1]); for(n=0, f=cl.mviewangles[0]; n<3; n++) *f++ = getfl(demobf); if(net_message.cursize > Nmsg) fatal("rlmpmsg: invalid message size %d\n", net_message.cursize); n = Bread(demobf, net_message.data, net_message.cursize); demoofs = Bseek(demobf, 0, 1); if(n < 0) dprint("rlmpmsg: bad read: %r"); if(n != net_message.cursize){ dprint("rlmpmsg: short read: %r"); n = -1; } return n; } void wlmpmsg(void) { int i; put32(demobf, net_message.cursize); for(i=0; i<3; i++) putfl(demobf, cl.viewangles[i]); ewrite(demobf, net_message.data, net_message.cursize); } int reclmp(char *f, int trk) { char s[16]; demobf = bopen(f, OWRITE, 0); if(demobf == nil) return -1; sprint(s, "%d\n", trk); ewrite(demobf, s, strlen(s)); return 0; } demolmp(char *f) { int n; char *s; demobf = openlmp(f, &n); if(demobf == nil) return -1; s = Brdline(demobf, '\n'); n = Blinelen(demobf) - 1; if(s == nil || n < 0 || n > 11){ dprint("demolmp: invalid trk field"); closelmp(demobf); return -1; } demoofs = Bseek(demobf, 0, 1); s[n] = 0; cls.forcetrack = strtol(s, nil, 10); return 0; } void crc(u8int v) { crcn = crcn << 8 ^ crct[crcn >> 8 ^ v]; } void initcrc(void) { crcn = Ncrc0; } void ext(char *f, char *e) { char *s, *d; s = strrchr(f, '/'); d = strrchr(f, '.'); if(d > s) return; strcat(f, e); } void radix(char *f, char *d) { char *s, *e; s = strrchr(f, '/'); e = strrchr(f, '.'); if(s == nil) s = f; s++; if(e - s < 1) strcpy(d, "?model?"); else{ strncpy(d, s, e - s); d[e - s] = 0; } } void unloadfs(void) { Paklist *pl; for(pl=pkl; pl!=nil; pl=pl->pl) if(pl->p != nil) Bterm(pl->p->bf); } /* TODO: nuke these from orbit */ static short ShortSwap(short l) { byte b1,b2; b1 = l&255; b2 = (l>>8)&255; return (b1<<8) + b2; } static short ShortNoSwap(short l) { return l; } static int LongSwap(int l) { byte b1,b2,b3,b4; b1 = l&255; b2 = (l>>8)&255; b3 = (l>>16)&255; b4 = (l>>24)&255; return ((int)b1<<24) + ((int)b2<<16) + ((int)b3<<8) + b4; } static int LongNoSwap(int l) { return l; } static float FloatSwap(float f) { union{ float f; byte b[4]; } dat1, dat2; dat1.f = f; dat2.b[0] = dat1.b[3]; dat2.b[1] = dat1.b[2]; dat2.b[2] = dat1.b[1]; dat2.b[3] = dat1.b[0]; return dat2.f; } static float FloatNoSwap(float f) { return f; } void initfs(void) { byte swaptest[2] = {1,0}; if(*(short *)swaptest == 1) { BigShort = ShortSwap; LittleShort = ShortNoSwap; BigLong = LongSwap; LittleLong = LongNoSwap; BigFloat = FloatSwap; LittleFloat = FloatNoSwap; }else{ BigShort = ShortNoSwap; LittleShort = ShortSwap; BigLong = LongNoSwap; LittleLong = LongSwap; BigFloat = FloatNoSwap; LittleFloat = FloatSwap; } initns(); chkreg(); Cmd_AddCommand("path", path); Cvar_RegisterVariable(&cmdline); setcvar("cmdline", com_cmdline); }