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* Viewing executables and compressed files is no longer inhibited.

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This commit is contained in:
Gunnar Ritter
2005-08-04 17:03:27 +00:00
parent f2ae772abb
commit b5ea77e25f
3 changed files with 4 additions and 94 deletions
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93
ex_io.c
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@@ -73,7 +73,7 @@
#ifndef lint
#ifdef DOSCCS
static char sccsid[] = "@(#)ex_io.c 1.41 (gritter) 8/4/05";
static char sccsid[] = "@(#)ex_io.c 1.42 (gritter) 8/4/05";
#endif
#endif
@@ -407,9 +407,7 @@ samei(struct stat *sp, char *cp)
void
rop(int c)
{
register int i;
struct stat stbuf;
char magic[4];
static int ovro; /* old value(READONLY) */
static int denied; /* 1 if READONLY was set due to file permissions */
@@ -459,95 +457,6 @@ rop(int c)
case S_IFIFO:
error(catgets(catd, 1, 96, " Named pipe"));
#endif
case S_IFREG:
/*
* The magics are checked byte-wise now to avoid
* endianness problems. Some quite old types
* were omitted.
*
* Feel free too add more magics here, but do not
* make this a copy of the `file' program.
*
* GR
*/
i = read(io, magic, sizeof(magic));
lseek(io, (off_t) 0, SEEK_SET);
if (i != sizeof(magic))
break;
switch (magic[0]&0377) {
case 01: /* big endian a.out */
if (magic[1] != 05 && magic[1] != 07
&& magic[1] != 010 && magic[1] != 011
&& magic[1] != 013 && magic[1] != 030
&& magic[1] != 031)
break;
goto is_exec;
case 0314: /* Linux/ia32 QMAGIC */
if (magic[1] != 0 || magic[2] != 0144)
break;
goto is_exec;
case 05: /* data overlay on exec */
case 07: /* unshared */
case 010: /* shared text */
case 011: /* separate I/D */
case 013: /* VM/Unix demand paged */
case 030: /* PDP-11 Overlay shared */
case 031: /* PDP-11 Overlay sep I/D */
if (magic[1] == 01)
is_exec:
error(catgets(catd, 1, 97, " Executable"));
break;
case 037:
switch (magic[1]&0377) {
case 036: /* pack */
case 037: /* compact */
case 0235: /* compress */
case 0213: /* gzip */
/*
* We omit bzip2 here since it has
* an ASCII header.
*/
error(catgets(catd, 1, 98, " Compressed Data"));
}
break;
case 0177:
if (magic[1] == 'E' && magic[2] == 'L'
&& magic[3] == 'F')
error(catgets(catd, 1, 99, " ELF object"));
break;
default:
break;
}
#ifdef notdef
/*
* We do not forbid the editing of portable archives
* because it is reasonable to edit them, especially
* if they are archives of text files. This is
* especially useful if you archive source files together
* and copy them to another system with ~%take, since
* the files sometimes show up munged and must be fixed.
*/
case 0177545:
case 0177555:
error(catgets(catd, 1, 100, " Archive"));
default:
#ifdef mbb
/* C/70 has a 10 bit byte */
if (magic & 03401600)
#else
/* Everybody else has an 8 bit byte */
if (magic & 0100200)
#endif
error(catgets(catd, 1, 101, " Non-ascii file"));
break;
}
#endif /* notdef */
}
if (c != 'r') {
if (value(READONLY) && denied) {