rev |
line source |
pascal@19515
|
1 #include "crtl.h"
|
pascal@19515
|
2 #include "crtlx.h"
|
pascal@19515
|
3 #include "iso9660.h"
|
pascal@19515
|
4 #define __ROCKRIDGE
|
pascal@19515
|
5
|
pascal@19571
|
6 struct isostate isostate;
|
pascal@19515
|
7
|
pascal@20747
|
8 #if 1
|
pascal@20747
|
9 #define setdirofs(to,sec) (*(int*)((char*)&(to)+1) = *(int*)&(sec)<<(SECTORBITS-8))
|
pascal@20747
|
10 #define cpydirofs(to,from) (*(int*)((char*)&(to)+1) = *(int*)((char*)&(from)+1))
|
pascal@20747
|
11 #else
|
pascal@20747
|
12 #define setdirofs(to,sec) (to = (sec)<<SECTORBITS)
|
pascal@20747
|
13 #define cpydirofs(to,from) ((to) = (from))
|
pascal@20747
|
14 #endif
|
pascal@20747
|
15
|
pascal@19515
|
16 int isoreset(char *name)
|
pascal@19515
|
17 {
|
pascal@19825
|
18 static const unsigned long root = 16UL * 2048;
|
pascal@19571
|
19 struct isostate *x=&isostate;
|
pascal@20538
|
20 if (name) {
|
pascal@19571
|
21 //x->fd = open(name, O_RDONLY);
|
pascal@19571
|
22 x->fd = open(name);
|
pascal@20538
|
23 }
|
pascal@20534
|
24 if (isoreadsector(&root) < 0 || strhead(x->buffer+1,"CD001")) {
|
pascal@19571
|
25 //close(x->fd);
|
pascal@19515
|
26 return -1;
|
pascal@19515
|
27 }
|
pascal@20747
|
28 setdirofs(x->dirofs, (* (unsigned long *) (isostate.buffer + 0x9E)));
|
pascal@20632
|
29 x->dirsize = filesize2dirsize(* (unsigned long *) (isostate.buffer + 0xA6));
|
pascal@19515
|
30 return 0;
|
pascal@19515
|
31 }
|
pascal@19515
|
32
|
pascal@20747
|
33 int isoreaddir(void)
|
pascal@19515
|
34 {
|
pascal@19636
|
35 int size;
|
pascal@19636
|
36 char *p;
|
pascal@19515
|
37 #ifdef __ROCKRIDGE
|
pascal@19515
|
38 char *endname;
|
pascal@19515
|
39 #endif
|
pascal@19571
|
40 struct isostate *x=&isostate;
|
pascal@19515
|
41
|
pascal@20747
|
42 if (x->curdirsize == 0xFFFF) {
|
pascal@19826
|
43 x->curdirsize = x->dirsize;
|
pascal@20747
|
44 cpydirofs(x->curdirofs, x->dirofs);
|
pascal@19826
|
45 goto restarted;
|
pascal@19515
|
46 }
|
pascal@20534
|
47 if (x->curpos >= SECTORSZ || * (short *) (x->buffer + x->curpos) == 0) {
|
pascal@20538
|
48 restarted:
|
pascal@19826
|
49 if (x->curdirsize < DIRSECTORSZ) return -1;
|
pascal@20534
|
50 isoreadsector(&x->curdirofs);
|
pascal@20453
|
51 //x->curdirofs += SECTORSZ;
|
pascal@20453
|
52 *(int *)((char *) &x->curdirofs+1) += SECTORSZ/256;
|
pascal@19826
|
53 x->curdirsize -= DIRSECTORSZ;
|
pascal@20458
|
54 x->curpos = 0;
|
pascal@19515
|
55 }
|
pascal@20534
|
56 p = x->buffer; p += x->curpos;
|
pascal@20538
|
57 if ((size = * (short *) p) == 0) {
|
pascal@19515
|
58 return -1;
|
pascal@20538
|
59 }
|
pascal@19636
|
60 x->fileofs = (* (unsigned long *) (p + 2)) << SECTORBITS;
|
pascal@19636
|
61 x->filesize = * (unsigned long *) (p + 10);
|
pascal@20543
|
62 x->filemod = 0x81ED; if (p[25] & 2) ((char *)&(x->filemod))[1] = 0x41;
|
pascal@20543
|
63 //x->filemod = (p[25] & 2) ? 0040755 : 0100755;
|
pascal@20453
|
64 //x->filemod = 0100755 - ((p[25] & (char)2) << 13);
|
pascal@19515
|
65 #ifdef __ROCKRIDGE
|
pascal@19515
|
66 endname = NULL;
|
pascal@19636
|
67 // p += 34 + (p[32] & -2); ?
|
pascal@20534
|
68 p = x->buffer + 34 + ((p[32] + x->curpos) & -2);
|
pascal@19515
|
69 do {
|
pascal@19636
|
70 int len = p[2];
|
pascal@20751
|
71 # if 0
|
pascal@19636
|
72 switch (* (short *) p) {
|
pascal@19515
|
73 case 0x5850: // PX
|
pascal@19636
|
74 x->filemod = * (short *) (p + 4);
|
pascal@19515
|
75 break;
|
pascal@20751
|
76 case 0x4D4E: // NM
|
pascal@20751
|
77 # else
|
pascal@20751
|
78 if (* (short *) p == 0x4D4E) {
|
pascal@20751
|
79 # endif
|
pascal@20751
|
80 x->filename = p + 5;
|
pascal@20751
|
81 endname = p + len;
|
pascal@19515
|
82 }
|
pascal@19636
|
83 p += len;
|
pascal@20534
|
84 } while (x->buffer + x->curpos + size - p > 2);
|
pascal@19515
|
85 if (endname)
|
pascal@19515
|
86 *endname = 0;
|
pascal@19515
|
87 else
|
pascal@19515
|
88 #endif
|
pascal@19515
|
89 {
|
pascal@20534
|
90 p = x->buffer + 33; x->filename = p += x->curpos;
|
pascal@19636
|
91 p--;
|
pascal@20453
|
92 if (((* (short *) p) & 0xFEFF) -1 == 0) {
|
pascal@20453
|
93 x->filename = "..";
|
pascal@20453
|
94 if ((* (short *) p) == 1)
|
pascal@20453
|
95 x->filename++;
|
pascal@20453
|
96 }
|
pascal@20453
|
97 else {
|
pascal@19636
|
98 p += *p; p--;
|
pascal@19636
|
99 if (* (short *) (p) != 0x313B) {
|
pascal@19636
|
100 p++; p++; // no ;1 to remove
|
pascal@19636
|
101 }
|
pascal@19636
|
102 if (p[-1] == '.') p--;
|
pascal@19636
|
103 *p = 0;
|
pascal@19515
|
104 }
|
pascal@19515
|
105 }
|
pascal@19571
|
106 x->curpos += size;
|
pascal@19515
|
107 return 0;
|
pascal@19515
|
108 }
|
pascal@19515
|
109
|
pascal@19825
|
110 //#define IS_DIR(x)( ((x) & ~0777) == 040000)
|
pascal@20454
|
111 //#define IS_DIR(x)( (char)((x) >> 9) == (char)040)
|
pascal@20454
|
112 //#define IS_DIR(x)( (*((char*) &x + 1) & (char)0776) == (char)0100)
|
pascal@20454
|
113 #define IS_DIR(x)( (*((char*) &x + 1) & (char)0676) == (char)0)
|
pascal@19825
|
114 int isoopen(const char *filename)
|
pascal@19515
|
115 {
|
pascal@19825
|
116 char *name, *s, c;
|
pascal@19825
|
117 char _64bits = cpuhaslm();
|
pascal@19571
|
118 struct isostate *x=&isostate;
|
pascal@19515
|
119
|
pascal@20528
|
120 do {
|
pascal@19825
|
121 for (s = (char *) filename; *s == '/' ; s++) {
|
pascal@19515
|
122 isoreset(NULL);
|
pascal@19515
|
123 }
|
pascal@19825
|
124 next:
|
pascal@20751
|
125 name = s;
|
pascal@20751
|
126 do s++; while (*s != '/' && *s);
|
pascal@19825
|
127 c = *s;
|
pascal@19825
|
128 *s = 0;
|
pascal@21576
|
129 for (x->curdirsize = 0xFFFF; isoreaddir() != -1;) {
|
pascal@19825
|
130 const char *n = name, *i = x->filename;
|
pascal@19825
|
131 if (_64bits) {
|
pascal@19825
|
132 if (strhead(i, n)) continue;
|
pascal@19825
|
133 n = "64";
|
pascal@19825
|
134 i += s - name; // strlen(name);
|
pascal@19515
|
135 }
|
pascal@19825
|
136 if (strcmp(i, n)) continue;
|
pascal@19825
|
137 *s++ = c;
|
pascal@19825
|
138 if (IS_DIR(x->filemod)) {
|
pascal@20747
|
139 cpydirofs(x->dirofs, x->fileofs);
|
pascal@19826
|
140 x->dirsize = filesize2dirsize(x->filesize);
|
pascal@19825
|
141 if (c) goto next;
|
pascal@19515
|
142 }
|
pascal@19825
|
143 isolseek(&x->fileofs);
|
pascal@19825
|
144 return 0;
|
pascal@19515
|
145 }
|
pascal@20528
|
146 } while ((_64bits ^= CPUMASKLM) == 0);
|
pascal@19825
|
147 return -1;
|
pascal@19515
|
148 }
|