static int filstat(char *nm, enum token mode)
{
struct stat s;
int i;
if (mode == FILSYM) {
#ifdef S_IFLNK
if (lstat(nm, &s) == 0) {
i = S_IFLNK;
goto filetype;
}
#endif
return 0;
}
if (stat(nm, &s) != 0)
return 0;
if (mode == FILEXIST)
return 1;
if (is_file_access(mode)) {
if (mode == FILRD)
i = R_OK;
if (mode == FILWR)
i = W_OK;
if (mode == FILEX)
i = X_OK;
return test_eaccess(nm, i) == 0;
}
if (is_file_type(mode)) {
if (mode == FILREG)
i = S_IFREG;
if (mode == FILDIR)
i = S_IFDIR;
if (mode == FILCDEV)
i = S_IFCHR;
if (mode == FILBDEV)
i = S_IFBLK;
if (mode == FILFIFO) {
#ifdef S_IFIFO
i = S_IFIFO;
#else
return 0;
#endif
}
if (mode == FILSOCK) {
#ifdef S_IFSOCK
i = S_IFSOCK;
#else
return 0;
#endif
}
filetype:
return ((s.st_mode & S_IFMT) == i);
}
if (is_file_bit(mode)) {
if (mode == FILSUID)
i = S_ISUID;
if (mode == FILSGID)
i = S_ISGID;
if (mode == FILSTCK)
i = S_ISVTX;
return ((s.st_mode & i) != 0);
}
if (mode == FILGZ)
return s.st_size > 0L;
if (mode == FILUID)
return s.st_uid == geteuid();
if (mode == FILGID)
return s.st_gid == getegid();
return 1; /* NOTREACHED */
}
int
test_eval(Test_env *te, Test_op op, const char *opnd1, const char *opnd2,
int do_eval)
{
int res;
int not;
struct stat b1, b2;
if (!do_eval)
return 0;
switch ((int) op) {
/*
* Unary Operators
*/
case TO_STNZE: /* -n */
return *opnd1 != '\0';
case TO_STZER: /* -z */
return *opnd1 == '\0';
case TO_OPTION: /* -o */
if ((not = *opnd1 == '!'))
opnd1++;
if ((res = option(opnd1)) < 0)
res = 0;
else {
res = Flag(res);
if (not)
res = !res;
}
return res;
case TO_FILRD: /* -r */
return test_eaccess(opnd1, R_OK) == 0;
case TO_FILWR: /* -w */
return test_eaccess(opnd1, W_OK) == 0;
case TO_FILEX: /* -x */
return test_eaccess(opnd1, X_OK) == 0;
case TO_FILAXST: /* -a */
return test_stat(opnd1, &b1) == 0;
case TO_FILEXST: /* -e */
/* at&t ksh does not appear to do the /dev/fd/ thing for
* this (unless the os itself handles it)
*/
return stat(opnd1, &b1) == 0;
case TO_FILREG: /* -r */
return test_stat(opnd1, &b1) == 0 && S_ISREG(b1.st_mode);
case TO_FILID: /* -d */
return test_stat(opnd1, &b1) == 0 && S_ISDIR(b1.st_mode);
case TO_FILCDEV: /* -c */
return test_stat(opnd1, &b1) == 0 && S_ISCHR(b1.st_mode);
case TO_FILBDEV: /* -b */
return test_stat(opnd1, &b1) == 0 && S_ISBLK(b1.st_mode);
case TO_FILFIFO: /* -p */
return test_stat(opnd1, &b1) == 0 && S_ISFIFO(b1.st_mode);
case TO_FILSYM: /* -h -L */
return lstat(opnd1, &b1) == 0 && S_ISLNK(b1.st_mode);
case TO_FILSOCK: /* -S */
return test_stat(opnd1, &b1) == 0 && S_ISSOCK(b1.st_mode);
case TO_FILCDF:/* -H HP context dependent files (directories) */
return 0;
case TO_FILSETU: /* -u */
return test_stat(opnd1, &b1) == 0 &&
(b1.st_mode & S_ISUID) == S_ISUID;
case TO_FILSETG: /* -g */
return test_stat(opnd1, &b1) == 0 &&
(b1.st_mode & S_ISGID) == S_ISGID;
case TO_FILSTCK: /* -k */
return test_stat(opnd1, &b1) == 0 &&
(b1.st_mode & S_ISVTX) == S_ISVTX;
case TO_FILGZ: /* -s */
return test_stat(opnd1, &b1) == 0 && b1.st_size > 0L;
case TO_FILTT: /* -t */
if (opnd1 && !bi_getn(opnd1, &res)) {
te->flags |= TEF_ERROR;
res = 0;
} else {
/* generate error if in FPOSIX mode? */
res = isatty(opnd1 ? res : 0);
}
return res;
case TO_FILUID: /* -O */
return test_stat(opnd1, &b1) == 0 && b1.st_uid == ksheuid;
case TO_FILGID: /* -G */
return test_stat(opnd1, &b1) == 0 && b1.st_gid == getegid();
/*
* Binary Operators
*/
case TO_STEQL: /* = */
if (te->flags & TEF_DBRACKET)
return gmatch(opnd1, opnd2, false);
return strcmp(opnd1, opnd2) == 0;
case TO_STNEQ: /* != */
if (te->flags & TEF_DBRACKET)
return !gmatch(opnd1, opnd2, false);
return strcmp(opnd1, opnd2) != 0;
case TO_STLT: /* < */
return strcmp(opnd1, opnd2) < 0;
case TO_STGT: /* > */
return strcmp(opnd1, opnd2) > 0;
case TO_INTEQ: /* -eq */
case TO_INTNE: /* -ne */
case TO_INTGE: /* -ge */
case TO_INTGT: /* -gt */
case TO_INTLE: /* -le */
case TO_INTLT: /* -lt */
{
long v1, v2;
if (!evaluate(opnd1, &v1, KSH_RETURN_ERROR, false) ||
!evaluate(opnd2, &v2, KSH_RETURN_ERROR, false)) {
/* error already printed.. */
te->flags |= TEF_ERROR;
return 1;
}
switch ((int) op) {
case TO_INTEQ:
return v1 == v2;
case TO_INTNE:
return v1 != v2;
case TO_INTGE:
return v1 >= v2;
case TO_INTGT:
return v1 > v2;
case TO_INTLE:
return v1 <= v2;
case TO_INTLT:
return v1 < v2;
}
}
case TO_FILNT: /* -nt */
{
int s2;
/* ksh88/ksh93 succeed if file2 can't be stated
* (subtly different from `does not exist').
*/
return stat(opnd1, &b1) == 0 &&
(((s2 = stat(opnd2, &b2)) == 0 &&
b1.st_mtime > b2.st_mtime) || s2 < 0);
}
case TO_FILOT: /* -ot */
{
int s1;
/* ksh88/ksh93 succeed if file1 can't be stated
* (subtly different from `does not exist').
*/
return stat(opnd2, &b2) == 0 &&
(((s1 = stat(opnd1, &b1)) == 0 &&
b1.st_mtime < b2.st_mtime) || s1 < 0);
}
case TO_FILEQ: /* -ef */
return stat (opnd1, &b1) == 0 && stat (opnd2, &b2) == 0 &&
b1.st_dev == b2.st_dev && b1.st_ino == b2.st_ino;
}
(*te->error)(te, 0, "internal error: unknown op");
return 1;
}
static int filstat(char *nm, enum token mode)
{
struct stat s;
unsigned int i;
if (mode == FILSYM) {
#ifdef S_IFLNK
if (lstat(nm, &s) == 0) {
i = S_IFLNK;
goto filetype;
}
#endif
return 0;
}
if (stat(nm, &s) != 0)
return 0;
switch (mode) {
case FILRD:
return test_eaccess(nm, R_OK) == 0;
case FILWR:
return test_eaccess(nm, W_OK) == 0;
case FILEX:
return test_eaccess(nm, X_OK) == 0;
case FILEXIST:
return 1;
case FILREG:
i = S_IFREG;
goto filetype;
case FILDIR:
i = S_IFDIR;
goto filetype;
case FILCDEV:
i = S_IFCHR;
goto filetype;
case FILBDEV:
i = S_IFBLK;
goto filetype;
case FILFIFO:
#ifdef S_IFIFO
i = S_IFIFO;
goto filetype;
#else
return 0;
#endif
case FILSOCK:
#ifdef S_IFSOCK
i = S_IFSOCK;
goto filetype;
#else
return 0;
#endif
case FILSUID:
i = S_ISUID;
goto filebit;
case FILSGID:
i = S_ISGID;
goto filebit;
case FILSTCK:
i = S_ISVTX;
goto filebit;
case FILGZ:
return s.st_size > 0L;
case FILUID:
return s.st_uid == geteuid();
case FILGID:
return s.st_gid == getegid();
default:
return 1;
}
filetype:
return ((s.st_mode & S_IFMT) == i);
filebit:
return ((s.st_mode & i) != 0);
}