summaryrefslogtreecommitdiff
path: root/doio.c
diff options
context:
space:
mode:
Diffstat (limited to 'doio.c')
-rw-r--r--doio.c1937
1 files changed, 1937 insertions, 0 deletions
diff --git a/doio.c b/doio.c
new file mode 100644
index 0000000000..c0ba205a57
--- /dev/null
+++ b/doio.c
@@ -0,0 +1,1937 @@
+/* $Header: doio.c,v 3.0 89/10/18 15:10:54 lwall Locked $
+ *
+ * Copyright (c) 1989, Larry Wall
+ *
+ * You may distribute under the terms of the GNU General Public License
+ * as specified in the README file that comes with the perl 3.0 kit.
+ *
+ * $Log: doio.c,v $
+ * Revision 3.0 89/10/18 15:10:54 lwall
+ * 3.0 baseline
+ *
+ */
+
+#include "EXTERN.h"
+#include "perl.h"
+
+#ifdef SOCKET
+#include <sys/socket.h>
+#include <netdb.h>
+#endif
+
+#include <errno.h>
+#ifdef I_PWD
+#include <pwd.h>
+#endif
+#ifdef I_GRP
+#include <grp.h>
+#endif
+
+extern int errno;
+
+bool
+do_open(stab,name)
+STAB *stab;
+register char *name;
+{
+ FILE *fp;
+ int len = strlen(name);
+ register STIO *stio = stab_io(stab);
+ char *myname = savestr(name);
+ int result;
+ int fd;
+ int writing = 0;
+ char mode[3]; /* stdio file mode ("r\0" or "r+\0") */
+
+ name = myname;
+ forkprocess = 1; /* assume true if no fork */
+ while (len && isspace(name[len-1]))
+ name[--len] = '\0';
+ if (!stio)
+ stio = stab_io(stab) = stio_new();
+ else if (stio->ifp) {
+ fd = fileno(stio->ifp);
+ if (stio->type == '|')
+ result = mypclose(stio->ifp);
+ else if (stio->ifp != stio->ofp) {
+ if (stio->ofp)
+ fclose(stio->ofp);
+ result = fclose(stio->ifp);
+ }
+ else if (stio->type != '-')
+ result = fclose(stio->ifp);
+ else
+ result = 0;
+ if (result == EOF && fd > 2)
+ fprintf(stderr,"Warning: unable to close filehandle %s properly.\n",
+ stab_name(stab));
+ stio->ofp = stio->ifp = Nullfp;
+ }
+ if (*name == '+' && len > 1 && name[len-1] != '|') { /* scary */
+ mode[1] = *name++;
+ mode[2] = '\0';
+ --len;
+ writing = 1;
+ }
+ else {
+ mode[1] = '\0';
+ }
+ stio->type = *name;
+ if (*name == '|') {
+ for (name++; isspace(*name); name++) ;
+#ifdef TAINT
+ taintenv();
+ taintproper("Insecure dependency in piped open");
+#endif
+ fp = mypopen(name,"w");
+ writing = 1;
+ }
+ else if (*name == '>' && name[1] == '>') {
+#ifdef TAINT
+ taintproper("Insecure dependency in open");
+#endif
+ mode[0] = stio->type = 'a';
+ for (name += 2; isspace(*name); name++) ;
+ fp = fopen(name, mode);
+ writing = 1;
+ }
+ else if (*name == '>' && name[1] == '&') {
+#ifdef TAINT
+ taintproper("Insecure dependency in open");
+#endif
+ for (name += 2; isspace(*name); name++) ;
+ if (isdigit(*name))
+ fd = atoi(name);
+ else {
+ stab = stabent(name,FALSE);
+ if (stab_io(stab) && stab_io(stab)->ifp) {
+ fd = fileno(stab_io(stab)->ifp);
+ stio->type = stab_io(stab)->type;
+ }
+ else
+ fd = -1;
+ }
+ fp = fdopen(dup(fd),stio->type == 'a' ? "a" :
+ (stio->type == '<' ? "r" : "w") );
+ writing = 1;
+ }
+ else if (*name == '>') {
+#ifdef TAINT
+ taintproper("Insecure dependency in open");
+#endif
+ for (name++; isspace(*name); name++) ;
+ if (strEQ(name,"-")) {
+ fp = stdout;
+ stio->type = '-';
+ }
+ else {
+ mode[0] = 'w';
+ fp = fopen(name,mode);
+ }
+ writing = 1;
+ }
+ else {
+ if (*name == '<') {
+ for (name++; isspace(*name); name++) ;
+ if (strEQ(name,"-")) {
+ fp = stdin;
+ stio->type = '-';
+ }
+ else {
+ mode[0] = 'r';
+ fp = fopen(name,mode);
+ }
+ }
+ else if (name[len-1] == '|') {
+#ifdef TAINT
+ taintenv();
+ taintproper("Insecure dependency in piped open");
+#endif
+ name[--len] = '\0';
+ while (len && isspace(name[len-1]))
+ name[--len] = '\0';
+ for (; isspace(*name); name++) ;
+ fp = mypopen(name,"r");
+ stio->type = '|';
+ }
+ else {
+ stio->type = '<';
+ for (; isspace(*name); name++) ;
+ if (strEQ(name,"-")) {
+ fp = stdin;
+ stio->type = '-';
+ }
+ else
+ fp = fopen(name,"r");
+ }
+ }
+ Safefree(myname);
+ if (!fp)
+ return FALSE;
+ if (stio->type &&
+ stio->type != '|' && stio->type != '-') {
+ if (fstat(fileno(fp),&statbuf) < 0) {
+ (void)fclose(fp);
+ return FALSE;
+ }
+ if ((statbuf.st_mode & S_IFMT) != S_IFREG &&
+#ifdef S_IFSOCK
+ (statbuf.st_mode & S_IFMT) != S_IFSOCK &&
+#endif
+#ifdef S_IFFIFO
+ (statbuf.st_mode & S_IFMT) != S_IFFIFO &&
+#endif
+ (statbuf.st_mode & S_IFMT) != S_IFCHR) {
+ (void)fclose(fp);
+ return FALSE;
+ }
+ }
+ stio->ifp = fp;
+ if (writing)
+ stio->ofp = fp;
+ return TRUE;
+}
+
+FILE *
+nextargv(stab)
+register STAB *stab;
+{
+ register STR *str;
+ char *oldname;
+ int filemode,fileuid,filegid;
+
+ while (alen(stab_xarray(stab)) >= 0) {
+ str = ashift(stab_xarray(stab));
+ str_sset(stab_val(stab),str);
+ STABSET(stab_val(stab));
+ oldname = str_get(stab_val(stab));
+ if (do_open(stab,oldname)) {
+ if (inplace) {
+#ifdef TAINT
+ taintproper("Insecure dependency in inplace open");
+#endif
+ filemode = statbuf.st_mode;
+ fileuid = statbuf.st_uid;
+ filegid = statbuf.st_gid;
+ if (*inplace) {
+ str_cat(str,inplace);
+#ifdef RENAME
+ (void)rename(oldname,str->str_ptr);
+#else
+ (void)UNLINK(str->str_ptr);
+ (void)link(oldname,str->str_ptr);
+ (void)UNLINK(oldname);
+#endif
+ }
+ else {
+ (void)UNLINK(oldname);
+ }
+
+ str_nset(str,">",1);
+ str_cat(str,oldname);
+ errno = 0; /* in case sprintf set errno */
+ if (!do_open(argvoutstab,str->str_ptr))
+ fatal("Can't do inplace edit");
+ defoutstab = argvoutstab;
+#ifdef FCHMOD
+ (void)fchmod(fileno(stab_io(argvoutstab)->ifp),filemode);
+#else
+ (void)chmod(oldname,filemode);
+#endif
+#ifdef FCHOWN
+ (void)fchown(fileno(stab_io(argvoutstab)->ifp),fileuid,filegid);
+#else
+ (void)chown(oldname,fileuid,filegid);
+#endif
+ }
+ str_free(str);
+ return stab_io(stab)->ifp;
+ }
+ else
+ fprintf(stderr,"Can't open %s\n",str_get(str));
+ str_free(str);
+ }
+ if (inplace) {
+ (void)do_close(argvoutstab,FALSE);
+ defoutstab = stabent("STDOUT",TRUE);
+ }
+ return Nullfp;
+}
+
+bool
+do_close(stab,explicit)
+STAB *stab;
+bool explicit;
+{
+ bool retval = FALSE;
+ register STIO *stio = stab_io(stab);
+ int status;
+
+ if (!stio) { /* never opened */
+ if (dowarn && explicit)
+ warn("Close on unopened file <%s>",stab_name(stab));
+ return FALSE;
+ }
+ if (stio->ifp) {
+ if (stio->type == '|') {
+ status = mypclose(stio->ifp);
+ retval = (status >= 0);
+ statusvalue = (unsigned)status & 0xffff;
+ }
+ else if (stio->type == '-')
+ retval = TRUE;
+ else {
+ if (stio->ofp && stio->ofp != stio->ifp) /* a socket */
+ fclose(stio->ofp);
+ retval = (fclose(stio->ifp) != EOF);
+ }
+ stio->ofp = stio->ifp = Nullfp;
+ }
+ if (explicit)
+ stio->lines = 0;
+ stio->type = ' ';
+ return retval;
+}
+
+bool
+do_eof(stab)
+STAB *stab;
+{
+ register STIO *stio;
+ int ch;
+
+ if (!stab) { /* eof() */
+ if (argvstab)
+ stio = stab_io(argvstab);
+ else
+ return TRUE;
+ }
+ else
+ stio = stab_io(stab);
+
+ if (!stio)
+ return TRUE;
+
+ while (stio->ifp) {
+
+#ifdef STDSTDIO /* (the code works without this) */
+ if (stio->ifp->_cnt > 0) /* cheat a little, since */
+ return FALSE; /* this is the most usual case */
+#endif
+
+ ch = getc(stio->ifp);
+ if (ch != EOF) {
+ (void)ungetc(ch, stio->ifp);
+ return FALSE;
+ }
+ if (!stab) { /* not necessarily a real EOF yet? */
+ if (!nextargv(argvstab)) /* get another fp handy */
+ return TRUE;
+ }
+ else
+ return TRUE; /* normal fp, definitely end of file */
+ }
+ return TRUE;
+}
+
+long
+do_tell(stab)
+STAB *stab;
+{
+ register STIO *stio;
+
+ if (!stab)
+ goto phooey;
+
+ stio = stab_io(stab);
+ if (!stio || !stio->ifp)
+ goto phooey;
+
+ if (feof(stio->ifp))
+ (void)fseek (stio->ifp, 0L, 2); /* ultrix 1.2 workaround */
+
+ return ftell(stio->ifp);
+
+phooey:
+ if (dowarn)
+ warn("tell() on unopened file");
+ return -1L;
+}
+
+bool
+do_seek(stab, pos, whence)
+STAB *stab;
+long pos;
+int whence;
+{
+ register STIO *stio;
+
+ if (!stab)
+ goto nuts;
+
+ stio = stab_io(stab);
+ if (!stio || !stio->ifp)
+ goto nuts;
+
+ if (feof(stio->ifp))
+ (void)fseek (stio->ifp, 0L, 2); /* ultrix 1.2 workaround */
+
+ return fseek(stio->ifp, pos, whence) >= 0;
+
+nuts:
+ if (dowarn)
+ warn("seek() on unopened file");
+ return FALSE;
+}
+
+int
+do_ctl(optype,stab,func,argstr)
+int optype;
+STAB *stab;
+int func;
+STR *argstr;
+{
+ register STIO *stio;
+ register char *s;
+ int retval;
+
+ if (!stab || !argstr)
+ return -1;
+ stio = stab_io(stab);
+ if (!stio)
+ return -1;
+
+ if (argstr->str_pok || !argstr->str_nok) {
+ if (!argstr->str_pok)
+ s = str_get(argstr);
+
+#ifdef IOCPARM_MASK
+#ifndef IOCPARM_LEN
+#define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK)
+#endif
+#endif
+#ifdef IOCPARM_LEN
+ retval = IOCPARM_LEN(func); /* on BSDish systes we're safe */
+#else
+ retval = 256; /* otherwise guess at what's safe */
+#endif
+ if (argstr->str_cur < retval) {
+ str_grow(argstr,retval+1);
+ argstr->str_cur = retval;
+ }
+
+ s = argstr->str_ptr;
+ s[argstr->str_cur] = 17; /* a little sanity check here */
+ }
+ else {
+ retval = (int)str_gnum(argstr);
+ s = (char*)retval; /* ouch */
+ }
+
+#ifndef lint
+ if (optype == O_IOCTL)
+ retval = ioctl(fileno(stio->ifp), func, s);
+ else
+#ifdef I_FCNTL
+ retval = fcntl(fileno(stio->ifp), func, s);
+#else
+ fatal("fcntl is not implemented");
+#endif
+#else /* lint */
+ retval = 0;
+#endif /* lint */
+
+ if (argstr->str_pok) {
+ if (s[argstr->str_cur] != 17)
+ fatal("Return value overflowed string");
+ s[argstr->str_cur] = 0; /* put our null back */
+ }
+ return retval;
+}
+
+int
+do_stat(str,arg,gimme,arglast)
+STR *str;
+register ARG *arg;
+int gimme;
+int *arglast;
+{
+ register ARRAY *ary = stack;
+ register int sp = arglast[0] + 1;
+ int max = 13;
+ register int i;
+
+ if ((arg[1].arg_type & A_MASK) == A_WORD) {
+ tmpstab = arg[1].arg_ptr.arg_stab;
+ if (tmpstab != defstab) {
+ statstab = tmpstab;
+ str_set(statname,"");
+ if (!stab_io(tmpstab) ||
+ fstat(fileno(stab_io(tmpstab)->ifp),&statcache) < 0) {
+ max = 0;
+ }
+ }
+ }
+ else {
+ str_sset(statname,ary->ary_array[sp]);
+ statstab = Nullstab;
+#ifdef SYMLINK
+ if (arg->arg_type == O_LSTAT)
+ i = lstat(str_get(statname),&statcache);
+ else
+#endif
+ i = stat(str_get(statname),&statcache);
+ if (i < 0)
+ max = 0;
+ }
+
+ if (gimme != G_ARRAY) {
+ if (max)
+ str_sset(str,&str_yes);
+ else
+ str_sset(str,&str_undef);
+ STABSET(str);
+ ary->ary_array[sp] = str;
+ return sp;
+ }
+ sp--;
+ if (max) {
+#ifndef lint
+ (void)astore(ary,++sp,
+ str_2static(str_nmake((double)statcache.st_dev)));
+ (void)astore(ary,++sp,
+ str_2static(str_nmake((double)statcache.st_ino)));
+ (void)astore(ary,++sp,
+ str_2static(str_nmake((double)statcache.st_mode)));
+ (void)astore(ary,++sp,
+ str_2static(str_nmake((double)statcache.st_nlink)));
+ (void)astore(ary,++sp,
+ str_2static(str_nmake((double)statcache.st_uid)));
+ (void)astore(ary,++sp,
+ str_2static(str_nmake((double)statcache.st_gid)));
+ (void)astore(ary,++sp,
+ str_2static(str_nmake((double)statcache.st_rdev)));
+ (void)astore(ary,++sp,
+ str_2static(str_nmake((double)statcache.st_size)));
+ (void)astore(ary,++sp,
+ str_2static(str_nmake((double)statcache.st_atime)));
+ (void)astore(ary,++sp,
+ str_2static(str_nmake((double)statcache.st_mtime)));
+ (void)astore(ary,++sp,
+ str_2static(str_nmake((double)statcache.st_ctime)));
+#ifdef STATBLOCKS
+ (void)astore(ary,++sp,
+ str_2static(str_nmake((double)statcache.st_blksize)));
+ (void)astore(ary,++sp,
+ str_2static(str_nmake((double)statcache.st_blocks)));
+#else
+ (void)astore(ary,++sp,
+ str_2static(str_make("",0)));
+ (void)astore(ary,++sp,
+ str_2static(str_make("",0)));
+#endif
+#else /* lint */
+ (void)astore(ary,++sp,str_nmake(0.0));
+#endif /* lint */
+ }
+ return sp;
+}
+
+int
+looks_like_number(str)
+STR *str;
+{
+ register char *s;
+ register char *send;
+
+ if (!str->str_pok)
+ return TRUE;
+ s = str->str_ptr;
+ send = s + str->str_cur;
+ while (isspace(*s))
+ s++;
+ if (s >= send)
+ return FALSE;
+ if (*s == '+' || *s == '-')
+ s++;
+ while (isdigit(*s))
+ s++;
+ if (s == send)
+ return TRUE;
+ if (*s == '.')
+ s++;
+ else if (s == str->str_ptr)
+ return FALSE;
+ while (isdigit(*s))
+ s++;
+ if (s == send)
+ return TRUE;
+ if (*s == 'e' || *s == 'E') {
+ s++;
+ if (*s == '+' || *s == '-')
+ s++;
+ while (isdigit(*s))
+ s++;
+ }
+ while (isspace(*s))
+ s++;
+ if (s >= send)
+ return TRUE;
+ return FALSE;
+}
+
+bool
+do_print(str,fp)
+register STR *str;
+FILE *fp;
+{
+ register char *tmps;
+
+ if (!fp) {
+ if (dowarn)
+ warn("print to unopened file");
+ return FALSE;
+ }
+ if (!str)
+ return FALSE;
+ if (ofmt &&
+ ((str->str_nok && str->str_u.str_nval != 0.0)
+ || (looks_like_number(str) && str_gnum(str) != 0.0) ) )
+ fprintf(fp, ofmt, str->str_u.str_nval);
+ else {
+ tmps = str_get(str);
+ if (*tmps == 'S' && tmps[1] == 't' && tmps[2] == 'a' && tmps[3] == 'b'
+ && str->str_cur == sizeof(STBP) && strlen(tmps) < str->str_cur) {
+ tmps = stab_name(((STAB*)str)); /* a stab value, be nice */
+ str = ((STAB*)str)->str_magic;
+ putc('*',fp);
+ }
+ if (str->str_cur && fwrite(tmps,1,str->str_cur,fp) == 0)
+ return FALSE;
+ }
+ return TRUE;
+}
+
+bool
+do_aprint(arg,fp,arglast)
+register ARG *arg;
+register FILE *fp;
+int *arglast;
+{
+ register STR **st = stack->ary_array;
+ register int sp = arglast[1];
+ register int retval;
+ register int items = arglast[2] - sp;
+
+ if (!fp) {
+ if (dowarn)
+ warn("print to unopened file");
+ return FALSE;
+ }
+ st += ++sp;
+ if (arg->arg_type == O_PRTF) {
+ do_sprintf(arg->arg_ptr.arg_str,items,st);
+ retval = do_print(arg->arg_ptr.arg_str,fp);
+ }
+ else {
+ retval = (items <= 0);
+ for (; items > 0; items--,st++) {
+ if (retval && ofslen) {
+ if (fwrite(ofs, 1, ofslen, fp) == 0) {
+ retval = FALSE;
+ break;
+ }
+ }
+ if (!(retval = do_print(*st, fp)))
+ break;
+ }
+ if (retval && orslen)
+ if (fwrite(ors, 1, orslen, fp) == 0)
+ retval = FALSE;
+ }
+ return retval;
+}
+
+int
+mystat(arg,str)
+ARG *arg;
+STR *str;
+{
+ STIO *stio;
+
+ if (arg[1].arg_type & A_DONT) {
+ stio = stab_io(arg[1].arg_ptr.arg_stab);
+ if (stio && stio->ifp) {
+ statstab = arg[1].arg_ptr.arg_stab;
+ str_set(statname,"");
+ return fstat(fileno(stio->ifp), &statcache);
+ }
+ else {
+ if (arg[1].arg_ptr.arg_stab == defstab)
+ return 0;
+ if (dowarn)
+ warn("Stat on unopened file <%s>",
+ stab_name(arg[1].arg_ptr.arg_stab));
+ statstab = Nullstab;
+ str_set(statname,"");
+ return -1;
+ }
+ }
+ else {
+ statstab = Nullstab;
+ str_sset(statname,str);
+ return stat(str_get(str),&statcache);
+ }
+}
+
+STR *
+do_fttext(arg,str)
+register ARG *arg;
+STR *str;
+{
+ int i;
+ int len;
+ int odd = 0;
+ STDCHAR tbuf[512];
+ register STDCHAR *s;
+ register STIO *stio;
+
+ if (arg[1].arg_type & A_DONT) {
+ if (arg[1].arg_ptr.arg_stab == defstab) {
+ if (statstab)
+ stio = stab_io(statstab);
+ else {
+ str = statname;
+ goto really_filename;
+ }
+ }
+ else {
+ statstab = arg[1].arg_ptr.arg_stab;
+ str_set(statname,"");
+ stio = stab_io(statstab);
+ }
+ if (stio && stio->ifp) {
+#ifdef STDSTDIO
+ fstat(fileno(stio->ifp),&statcache);
+ if (stio->ifp->_cnt <= 0) {
+ i = getc(stio->ifp);
+ if (i != EOF)
+ (void)ungetc(i,stio->ifp);
+ }
+ if (stio->ifp->_cnt <= 0) /* null file is anything */
+ return &str_yes;
+ len = stio->ifp->_cnt + (stio->ifp->_ptr - stio->ifp->_base);
+ s = stio->ifp->_base;
+#else
+ fatal("-T and -B not implemented on filehandles\n");
+#endif
+ }
+ else {
+ if (dowarn)
+ warn("Test on unopened file <%s>",
+ stab_name(arg[1].arg_ptr.arg_stab));
+ return &str_undef;
+ }
+ }
+ else {
+ statstab = Nullstab;
+ str_sset(statname,str);
+ really_filename:
+ i = open(str_get(str),0);
+ if (i < 0)
+ return &str_undef;
+ fstat(i,&statcache);
+ len = read(i,tbuf,512);
+ if (len <= 0) /* null file is anything */
+ return &str_yes;
+ (void)close(i);
+ s = tbuf;
+ }
+
+ /* now scan s to look for textiness */
+
+ for (i = 0; i < len; i++,s++) {
+ if (!*s) { /* null never allowed in text */
+ odd += len;
+ break;
+ }
+ else if (*s & 128)
+ odd++;
+ else if (*s < 32 &&
+ *s != '\n' && *s != '\r' && *s != '\b' &&
+ *s != '\t' && *s != '\f' && *s != 27)
+ odd++;
+ }
+
+ if ((odd * 10 > len) == (arg->arg_type == O_FTTEXT)) /* allow 10% odd */
+ return &str_no;
+ else
+ return &str_yes;
+}
+
+bool
+do_aexec(really,arglast)
+STR *really;
+int *arglast;
+{
+ register STR **st = stack->ary_array;
+ register int sp = arglast[1];
+ register int items = arglast[2] - sp;
+ register char **a;
+ char **argv;
+ char *tmps;
+
+ if (items) {
+ New(401,argv, items+1, char*);
+ a = argv;
+ for (st += ++sp; items > 0; items--,st++) {
+ if (*st)
+ *a++ = str_get(*st);
+ else
+ *a++ = "";
+ }
+ *a = Nullch;
+#ifdef TAINT
+ if (*argv[0] != '/') /* will execvp use PATH? */
+ taintenv(); /* testing IFS here is overkill, probably */
+#endif
+ if (really && *(tmps = str_get(really)))
+ execvp(tmps,argv);
+ else
+ execvp(argv[0],argv);
+ Safefree(argv);
+ }
+ return FALSE;
+}
+
+bool
+do_exec(cmd)
+char *cmd;
+{
+ register char **a;
+ register char *s;
+ char **argv;
+ char flags[10];
+
+#ifdef TAINT
+ taintenv();
+ taintproper("Insecure dependency in exec");
+#endif
+
+ /* save an extra exec if possible */
+
+ if (csh > 0 && strnEQ(cmd,"/bin/csh -c",11)) {
+ strcpy(flags,"-c");
+ s = cmd+11;
+ if (*s == 'f') {
+ s++;
+ strcat(flags,"f");
+ }
+ if (*s == ' ')
+ s++;
+ if (*s++ == '\'') {
+ char *ncmd = s;
+
+ while (*s)
+ s++;
+ if (s[-1] == '\n')
+ *--s = '\0';
+ if (s[-1] == '\'') {
+ *--s = '\0';
+ execl("/bin/csh","csh", flags,ncmd,(char*)0);
+ *s = '\'';
+ return FALSE;
+ }
+ }
+ }
+
+ /* see if there are shell metacharacters in it */
+
+ for (s = cmd; *s; s++) {
+ if (*s != ' ' && !isalpha(*s) && index("$&*(){}[]'\";\\|?<>~`\n",*s)) {
+ if (*s == '\n' && !s[1]) {
+ *s = '\0';
+ break;
+ }
+ doshell:
+ execl("/bin/sh","sh","-c",cmd,(char*)0);
+ return FALSE;
+ }
+ }
+ New(402,argv, (s - cmd) / 2 + 2, char*);
+
+ a = argv;
+ for (s = cmd; *s;) {
+ while (*s && isspace(*s)) s++;
+ if (*s)
+ *(a++) = s;
+ while (*s && !isspace(*s)) s++;
+ if (*s)
+ *s++ = '\0';
+ }
+ *a = Nullch;
+ if (argv[0]) {
+ execvp(argv[0],argv);
+ if (errno == ENOEXEC) /* for system V NIH syndrome */
+ goto doshell;
+ }
+ Safefree(argv);
+ return FALSE;
+}
+
+#ifdef SOCKET
+int
+do_socket(stab, arglast)
+STAB *stab;
+int *arglast;
+{
+ register STR **st = stack->ary_array;
+ register int sp = arglast[1];
+ register STIO *stio;
+ int domain, type, protocol, fd;
+
+ if (!stab)
+ return FALSE;
+
+ stio = stab_io(stab);
+ if (!stio)
+ stio = stab_io(stab) = stio_new();
+ else if (stio->ifp)
+ do_close(stab,FALSE);
+
+ domain = (int)str_gnum(st[++sp]);
+ type = (int)str_gnum(st[++sp]);
+ protocol = (int)str_gnum(st[++sp]);
+#ifdef TAINT
+ taintproper("Insecure dependency in socket");
+#endif
+ fd = socket(domain,type,protocol);
+ if (fd < 0)
+ return FALSE;
+ stio->ifp = fdopen(fd, "r"); /* stdio gets confused about sockets */
+ stio->ofp = fdopen(fd, "w");
+ stio->type = 's';
+
+ return TRUE;
+}
+
+int
+do_bind(stab, arglast)
+STAB *stab;
+int *arglast;
+{
+ register STR **st = stack->ary_array;
+ register int sp = arglast[1];
+ register STIO *stio;
+ char *addr;
+
+ if (!stab)
+ goto nuts;
+
+ stio = stab_io(stab);
+ if (!stio || !stio->ifp)
+ goto nuts;
+
+ addr = str_get(st[++sp]);
+#ifdef TAINT
+ taintproper("Insecure dependency in bind");
+#endif
+ return bind(fileno(stio->ifp), addr, st[sp]->str_cur) >= 0;
+
+nuts:
+ if (dowarn)
+ warn("bind() on closed fd");
+ return FALSE;
+
+}
+
+int
+do_connect(stab, arglast)
+STAB *stab;
+int *arglast;
+{
+ register STR **st = stack->ary_array;
+ register int sp = arglast[1];
+ register STIO *stio;
+ char *addr;
+
+ if (!stab)
+ goto nuts;
+
+ stio = stab_io(stab);
+ if (!stio || !stio->ifp)
+ goto nuts;
+
+ addr = str_get(st[++sp]);
+#ifdef TAINT
+ taintproper("Insecure dependency in connect");
+#endif
+ return connect(fileno(stio->ifp), addr, st[sp]->str_cur) >= 0;
+
+nuts:
+ if (dowarn)
+ warn("connect() on closed fd");
+ return FALSE;
+
+}
+
+int
+do_listen(stab, arglast)
+STAB *stab;
+int *arglast;
+{
+ register STR **st = stack->ary_array;
+ register int sp = arglast[1];
+ register STIO *stio;
+ int backlog;
+
+ if (!stab)
+ goto nuts;
+
+ stio = stab_io(stab);
+ if (!stio || !stio->ifp)
+ goto nuts;
+
+ backlog = (int)str_gnum(st[++sp]);
+ return listen(fileno(stio->ifp), backlog) >= 0;
+
+nuts:
+ if (dowarn)
+ warn("listen() on closed fd");
+ return FALSE;
+}
+
+void
+do_accept(str, nstab, gstab)
+STR *str;
+STAB *nstab;
+STAB *gstab;
+{
+ register STIO *nstio;
+ register STIO *gstio;
+ int len = sizeof buf;
+ int fd;
+
+ if (!nstab)
+ goto badexit;
+ if (!gstab)
+ goto nuts;
+
+ gstio = stab_io(gstab);
+ nstio = stab_io(nstab);
+
+ if (!gstio || !gstio->ifp)
+ goto nuts;
+ if (!nstio)
+ nstio = stab_io(nstab) = stio_new();
+ else if (nstio->ifp)
+ do_close(nstab,FALSE);
+
+ fd = accept(fileno(gstio->ifp),buf,&len);
+ if (fd < 0)
+ goto badexit;
+ nstio->ifp = fdopen(fd, "r");
+ nstio->ofp = fdopen(fd, "w");
+ nstio->type = 's';
+
+ str_nset(str, buf, len);
+ return;
+
+nuts:
+ if (dowarn)
+ warn("accept() on closed fd");
+badexit:
+ str_sset(str,&str_undef);
+ return;
+}
+
+int
+do_shutdown(stab, arglast)
+STAB *stab;
+int *arglast;
+{
+ register STR **st = stack->ary_array;
+ register int sp = arglast[1];
+ register STIO *stio;
+ int how;
+
+ if (!stab)
+ goto nuts;
+
+ stio = stab_io(stab);
+ if (!stio || !stio->ifp)
+ goto nuts;
+
+ how = (int)str_gnum(st[++sp]);
+ return shutdown(fileno(stio->ifp), how) >= 0;
+
+nuts:
+ if (dowarn)
+ warn("shutdown() on closed fd");
+ return FALSE;
+
+}
+
+int
+do_sopt(optype, stab, arglast)
+int optype;
+STAB *stab;
+int *arglast;
+{
+ register STR **st = stack->ary_array;
+ register int sp = arglast[1];
+ register STIO *stio;
+ int fd;
+ int lvl;
+ int optname;
+
+ if (!stab)
+ goto nuts;
+
+ stio = stab_io(stab);
+ if (!stio || !stio->ifp)
+ goto nuts;
+
+ fd = fileno(stio->ifp);
+ lvl = (int)str_gnum(st[sp+1]);
+ optname = (int)str_gnum(st[sp+2]);
+ switch (optype) {
+ case O_GSOCKOPT:
+ st[sp] = str_2static(str_new(257));
+ st[sp]->str_cur = 256;
+ if (getsockopt(fd, lvl, optname, st[sp]->str_ptr, &st[sp]->str_cur) < 0)
+ goto nuts;
+ break;
+ case O_SSOCKOPT:
+ st[sp] = st[sp+3];
+ if (setsockopt(fd, lvl, optname, st[sp]->str_ptr, st[sp]->str_cur) < 0)
+ goto nuts;
+ st[sp] = &str_yes;
+ break;
+ }
+
+ return sp;
+
+nuts:
+ if (dowarn)
+ warn("shutdown() on closed fd");
+ st[sp] = &str_undef;
+ return sp;
+
+}
+
+int
+do_getsockname(optype, stab, arglast)
+int optype;
+STAB *stab;
+int *arglast;
+{
+ register STR **st = stack->ary_array;
+ register int sp = arglast[1];
+ register STIO *stio;
+ int fd;
+
+ if (!stab)
+ goto nuts;
+
+ stio = stab_io(stab);
+ if (!stio || !stio->ifp)
+ goto nuts;
+
+ st[sp] = str_2static(str_new(257));
+ st[sp]->str_cur = 256;
+ fd = fileno(stio->ifp);
+ switch (optype) {
+ case O_GETSOCKNAME:
+ if (getsockname(fd, st[sp]->str_ptr, &st[sp]->str_cur) < 0)
+ goto nuts;
+ break;
+ case O_GETPEERNAME:
+ if (getpeername(fd, st[sp]->str_ptr, &st[sp]->str_cur) < 0)
+ goto nuts;
+ break;
+ }
+
+ return sp;
+
+nuts:
+ if (dowarn)
+ warn("shutdown() on closed fd");
+ st[sp] = &str_undef;
+ return sp;
+
+}
+
+int
+do_ghent(which,gimme,arglast)
+int which;
+int gimme;
+int *arglast;
+{
+ register ARRAY *ary = stack;
+ register int sp = arglast[0];
+ register char **elem;
+ register STR *str;
+ struct hostent *gethostbynam();
+ struct hostent *gethostbyaddr();
+#ifdef GETHOSTENT
+ struct hostent *gethostent();
+#endif
+ struct hostent *hent;
+ unsigned long len;
+
+ if (gimme != G_ARRAY) {
+ astore(ary, ++sp, str_static(&str_undef));
+ return sp;
+ }
+
+ if (which == O_GHBYNAME) {
+ char *name = str_get(ary->ary_array[sp+1]);
+
+ hent = gethostbyname(name);
+ }
+ else if (which == O_GHBYADDR) {
+ STR *addrstr = ary->ary_array[sp+1];
+ int addrtype = (int)str_gnum(ary->ary_array[sp+2]);
+ char *addr = str_get(addrstr);
+
+ hent = gethostbyaddr(addr,addrstr->str_cur,addrtype);
+ }
+ else
+#ifdef GETHOSTENT
+ hent = gethostent();
+#else
+ fatal("gethostent not implemented");
+#endif
+ if (hent) {
+#ifndef lint
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ str_set(str, hent->h_name);
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ for (elem = hent->h_aliases; *elem; elem++) {
+ str_cat(str, *elem);
+ if (elem[1])
+ str_ncat(str," ",1);
+ }
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ str_numset(str, (double)hent->h_addrtype);
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ len = hent->h_length;
+ str_numset(str, (double)len);
+#ifdef h_addr
+ for (elem = hent->h_addr_list; *elem; elem++) {
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ str_nset(str, *elem, len);
+ }
+#else
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ str_nset(str, hent->h_addr, len);
+#endif /* h_addr */
+#else /* lint */
+ elem = Nullch;
+ elem = elem;
+ (void)astore(ary, ++sp, str_static(&str_no));
+#endif /* lint */
+ }
+
+ return sp;
+}
+
+int
+do_gnent(which,gimme,arglast)
+int which;
+int gimme;
+int *arglast;
+{
+ register ARRAY *ary = stack;
+ register int sp = arglast[0];
+ register char **elem;
+ register STR *str;
+ struct netent *getnetbyname();
+ struct netent *getnetbyaddr();
+ struct netent *getnetent();
+ struct netent *nent;
+
+ if (gimme != G_ARRAY) {
+ astore(ary, ++sp, str_static(&str_undef));
+ return sp;
+ }
+
+ if (which == O_GNBYNAME) {
+ char *name = str_get(ary->ary_array[sp+1]);
+
+ nent = getnetbyname(name);
+ }
+ else if (which == O_GNBYADDR) {
+ STR *addrstr = ary->ary_array[sp+1];
+ int addrtype = (int)str_gnum(ary->ary_array[sp+2]);
+ char *addr = str_get(addrstr);
+
+ nent = getnetbyaddr(addr,addrtype);
+ }
+ else
+ nent = getnetent();
+
+ if (nent) {
+#ifndef lint
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ str_set(str, nent->n_name);
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ for (elem = nent->n_aliases; *elem; elem++) {
+ str_cat(str, *elem);
+ if (elem[1])
+ str_ncat(str," ",1);
+ }
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ str_numset(str, (double)nent->n_addrtype);
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ str_numset(str, (double)nent->n_net);
+#else /* lint */
+ elem = Nullch;
+ elem = elem;
+ (void)astore(ary, ++sp, str_static(&str_no));
+#endif /* lint */
+ }
+
+ return sp;
+}
+
+int
+do_gpent(which,gimme,arglast)
+int which;
+int gimme;
+int *arglast;
+{
+ register ARRAY *ary = stack;
+ register int sp = arglast[0];
+ register char **elem;
+ register STR *str;
+ struct protoent *getprotobyname();
+ struct protoent *getprotobynumber();
+ struct protoent *getprotoent();
+ struct protoent *pent;
+
+ if (gimme != G_ARRAY) {
+ astore(ary, ++sp, str_static(&str_undef));
+ return sp;
+ }
+
+ if (which == O_GPBYNAME) {
+ char *name = str_get(ary->ary_array[sp+1]);
+
+ pent = getprotobyname(name);
+ }
+ else if (which == O_GPBYNUMBER) {
+ int proto = (int)str_gnum(ary->ary_array[sp+1]);
+
+ pent = getprotobynumber(proto);
+ }
+ else
+ pent = getprotoent();
+
+ if (pent) {
+#ifndef lint
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ str_set(str, pent->p_name);
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ for (elem = pent->p_aliases; *elem; elem++) {
+ str_cat(str, *elem);
+ if (elem[1])
+ str_ncat(str," ",1);
+ }
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ str_numset(str, (double)pent->p_proto);
+#else /* lint */
+ elem = Nullch;
+ elem = elem;
+ (void)astore(ary, ++sp, str_static(&str_no));
+#endif /* lint */
+ }
+
+ return sp;
+}
+
+int
+do_gsent(which,gimme,arglast)
+int which;
+int gimme;
+int *arglast;
+{
+ register ARRAY *ary = stack;
+ register int sp = arglast[0];
+ register char **elem;
+ register STR *str;
+ struct servent *getservbyname();
+ struct servent *getservbynumber();
+ struct servent *getservent();
+ struct servent *sent;
+
+ if (gimme != G_ARRAY) {
+ astore(ary, ++sp, str_static(&str_undef));
+ return sp;
+ }
+
+ if (which == O_GSBYNAME) {
+ char *name = str_get(ary->ary_array[sp+1]);
+ char *proto = str_get(ary->ary_array[sp+2]);
+
+ if (proto && !*proto)
+ proto = Nullch;
+
+ sent = getservbyname(name,proto);
+ }
+ else if (which == O_GSBYPORT) {
+ int port = (int)str_gnum(ary->ary_array[sp+1]);
+ char *proto = str_get(ary->ary_array[sp+2]);
+
+ sent = getservbyport(port,proto);
+ }
+ else
+ sent = getservent();
+ if (sent) {
+#ifndef lint
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ str_set(str, sent->s_name);
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ for (elem = sent->s_aliases; *elem; elem++) {
+ str_cat(str, *elem);
+ if (elem[1])
+ str_ncat(str," ",1);
+ }
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+#ifdef NTOHS
+ str_numset(str, (double)ntohs(sent->s_port));
+#else
+ str_numset(str, (double)(sent->s_port));
+#endif
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ str_set(str, sent->s_proto);
+#else /* lint */
+ elem = Nullch;
+ elem = elem;
+ (void)astore(ary, ++sp, str_static(&str_no));
+#endif /* lint */
+ }
+
+ return sp;
+}
+
+int
+do_select(gimme,arglast)
+int gimme;
+int *arglast;
+{
+ register STR **st = stack->ary_array;
+ register int sp = arglast[0];
+ register int i;
+ register int j;
+ register char *s;
+ register STR *str;
+ double value;
+ int maxlen = 0;
+ int nfound;
+ struct timeval timebuf;
+ struct timeval *tbuf = &timebuf;
+
+ for (i = 1; i <= 3; i++) {
+ j = st[sp+i]->str_len;
+ if (maxlen < j)
+ maxlen = j;
+ }
+ for (i = 1; i <= 3; i++) {
+ str = st[sp+i];
+ j = str->str_len;
+ if (j < maxlen) {
+ if (str->str_pok) {
+ str_grow(str,maxlen);
+ s = str_get(str) + j;
+ while (++j <= maxlen) {
+ *s++ = '\0';
+ }
+ }
+ else if (str->str_ptr) {
+ Safefree(str->str_ptr);
+ str->str_ptr = Nullch;
+ }
+ }
+ }
+ str = st[sp+4];
+ if (str->str_nok || str->str_pok) {
+ value = str_gnum(str);
+ if (value < 0.0)
+ value = 0.0;
+ timebuf.tv_sec = (long)value;
+ value -= (double)timebuf.tv_sec;
+ timebuf.tv_usec = (long)(value * 1000000.0);
+ }
+ else
+ tbuf = Null(struct timeval*);
+
+ nfound = select(
+ maxlen * 8,
+ st[sp+1]->str_ptr,
+ st[sp+2]->str_ptr,
+ st[sp+3]->str_ptr,
+ tbuf);
+
+ st[++sp] = str_static(&str_no);
+ str_numset(st[sp], (double)nfound);
+ if (gimme == G_ARRAY && tbuf) {
+ value = (double)(timebuf.tv_sec) +
+ (double)(timebuf.tv_usec) / 1000000.0;
+ st[++sp] = str_static(&str_no);
+ str_numset(st[sp], value);
+ }
+ return sp;
+}
+
+int
+do_spair(stab1, stab2, arglast)
+STAB *stab1;
+STAB *stab2;
+int *arglast;
+{
+ register STR **st = stack->ary_array;
+ register int sp = arglast[2];
+ register STIO *stio1;
+ register STIO *stio2;
+ int domain, type, protocol, fd[2];
+
+ if (!stab1 || !stab2)
+ return FALSE;
+
+ stio1 = stab_io(stab1);
+ stio2 = stab_io(stab2);
+ if (!stio1)
+ stio1 = stab_io(stab1) = stio_new();
+ else if (stio1->ifp)
+ do_close(stab1,FALSE);
+ if (!stio2)
+ stio2 = stab_io(stab2) = stio_new();
+ else if (stio2->ifp)
+ do_close(stab2,FALSE);
+
+ domain = (int)str_gnum(st[++sp]);
+ type = (int)str_gnum(st[++sp]);
+ protocol = (int)str_gnum(st[++sp]);
+#ifdef TAINT
+ taintproper("Insecure dependency in socketpair");
+#endif
+#ifdef SOCKETPAIR
+ if (socketpair(domain,type,protocol,fd) < 0)
+ return FALSE;
+#else
+ fatal("Socketpair unimplemented");
+#endif
+ stio1->ifp = fdopen(fd[0], "r");
+ stio1->ofp = fdopen(fd[0], "w");
+ stio1->type = 's';
+ stio2->ifp = fdopen(fd[1], "r");
+ stio2->ofp = fdopen(fd[1], "w");
+ stio2->type = 's';
+
+ return TRUE;
+}
+
+#endif /* SOCKET */
+
+int
+do_gpwent(which,gimme,arglast)
+int which;
+int gimme;
+int *arglast;
+{
+#ifdef I_PWD
+ register ARRAY *ary = stack;
+ register int sp = arglast[0];
+ register char **elem;
+ register STR *str;
+ struct passwd *getpwnam();
+ struct passwd *getpwuid();
+ struct passwd *getpwent();
+ struct passwd *pwent;
+ unsigned long len;
+
+ if (gimme != G_ARRAY) {
+ astore(ary, ++sp, str_static(&str_undef));
+ return sp;
+ }
+
+ if (which == O_GPWNAM) {
+ char *name = str_get(ary->ary_array[sp+1]);
+
+ pwent = getpwnam(name);
+ }
+ else if (which == O_GPWUID) {
+ int uid = (int)str_gnum(ary->ary_array[sp+1]);
+
+ pwent = getpwuid(uid);
+ }
+ else
+ pwent = getpwent();
+
+ if (pwent) {
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ str_set(str, pwent->pw_name);
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ str_set(str, pwent->pw_passwd);
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ str_numset(str, (double)pwent->pw_uid);
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ str_numset(str, (double)pwent->pw_gid);
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+#ifdef PWQUOTA
+ str_numset(str, (double)pwent->pw_quota);
+#else
+#ifdef PWAGE
+ str_set(str, pwent->pw_age);
+#endif
+#endif
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ str_set(str, pwent->pw_comment);
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ str_set(str, pwent->pw_gecos);
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ str_set(str, pwent->pw_dir);
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ str_set(str, pwent->pw_shell);
+ }
+
+ return sp;
+#else
+ fatal("password routines not implemented");
+#endif
+}
+
+int
+do_ggrent(which,gimme,arglast)
+int which;
+int gimme;
+int *arglast;
+{
+#ifdef I_GRP
+ register ARRAY *ary = stack;
+ register int sp = arglast[0];
+ register char **elem;
+ register STR *str;
+ struct group *getgrnam();
+ struct group *getgrgid();
+ struct group *getgrent();
+ struct group *grent;
+ unsigned long len;
+
+ if (gimme != G_ARRAY) {
+ astore(ary, ++sp, str_static(&str_undef));
+ return sp;
+ }
+
+ if (which == O_GGRNAM) {
+ char *name = str_get(ary->ary_array[sp+1]);
+
+ grent = getgrnam(name);
+ }
+ else if (which == O_GGRGID) {
+ int gid = (int)str_gnum(ary->ary_array[sp+1]);
+
+ grent = getgrgid(gid);
+ }
+ else
+ grent = getgrent();
+
+ if (grent) {
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ str_set(str, grent->gr_name);
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ str_set(str, grent->gr_passwd);
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ str_numset(str, (double)grent->gr_gid);
+ (void)astore(ary, ++sp, str = str_static(&str_no));
+ for (elem = grent->gr_mem; *elem; elem++) {
+ str_cat(str, *elem);
+ if (elem[1])
+ str_ncat(str," ",1);
+ }
+ }
+
+ return sp;
+#else
+ fatal("group routines not implemented");
+#endif
+}
+
+int
+do_dirop(optype,stab,gimme,arglast)
+int optype;
+STAB *stab;
+int gimme;
+int *arglast;
+{
+#ifdef DIRENT
+ register ARRAY *ary = stack;
+ register STR **st = ary->ary_array;
+ register int sp = arglast[1];
+ register STIO *stio;
+ long along;
+ long telldir();
+ struct DIRENT *readdir();
+ register struct DIRENT *dp;
+
+ if (!stab)
+ goto nope;
+ if (!(stio = stab_io(stab)))
+ stio = stab_io(stab) = stio_new();
+ if (!stio->dirp && optype != O_OPENDIR)
+ goto nope;
+ st[sp] = &str_yes;
+ switch (optype) {
+ case O_OPENDIR:
+ if (stio->dirp)
+ closedir(stio->dirp);
+ if (!(stio->dirp = opendir(str_get(st[sp+1]))))
+ goto nope;
+ break;
+ case O_READDIR:
+ if (gimme == G_ARRAY) {
+ --sp;
+ while (dp = readdir(stio->dirp)) {
+#ifdef DIRNAMLEN
+ (void)astore(ary,++sp,
+ str_2static(str_make(dp->d_name,dp->d_namlen)));
+#else
+ (void)astore(ary,++sp,
+ str_2static(str_make(dp->d_name,0)));
+#endif
+ }
+ }
+ else {
+ if (!(dp = readdir(stio->dirp)))
+ goto nope;
+ st[sp] = str_static(&str_undef);
+#ifdef DIRNAMLEN
+ str_nset(st[sp], dp->d_name, dp->d_namlen);
+#else
+ str_set(st[sp], dp->d_name);
+#endif
+ }
+ break;
+ case O_TELLDIR:
+ st[sp] = str_static(&str_undef);
+ str_numset(st[sp], (double)telldir(stio->dirp));
+ break;
+ case O_SEEKDIR:
+ st[sp] = str_static(&str_undef);
+ along = (long)str_gnum(st[sp+1]);
+ (void)seekdir(stio->dirp,along);
+ break;
+ case O_REWINDDIR:
+ st[sp] = str_static(&str_undef);
+ (void)rewinddir(stio->dirp);
+ break;
+ case O_CLOSEDIR:
+ st[sp] = str_static(&str_undef);
+ (void)closedir(stio->dirp);
+ stio->dirp = 0;
+ break;
+ }
+ return sp;
+
+nope:
+ st[sp] = &str_undef;
+ return sp;
+
+#else
+ fatal("Unimplemented directory operation");
+#endif
+}
+
+apply(type,arglast)
+int type;
+int *arglast;
+{
+ register STR **st = stack->ary_array;
+ register int sp = arglast[1];
+ register int items = arglast[2] - sp;
+ register int val;
+ register int val2;
+ register int tot = 0;
+ char *s;
+
+#ifdef TAINT
+ for (st += ++sp; items--; st++)
+ tainted |= (*st)->str_tainted;
+ st = stack->ary_array;
+ sp = arglast[1];
+ items = arglast[2] - sp;
+#endif
+ switch (type) {
+ case O_CHMOD:
+#ifdef TAINT
+ taintproper("Insecure dependency in chmod");
+#endif
+ if (--items > 0) {
+ tot = items;
+ val = (int)str_gnum(st[++sp]);
+ while (items--) {
+ if (chmod(str_get(st[++sp]),val))
+ tot--;
+ }
+ }
+ break;
+ case O_CHOWN:
+#ifdef TAINT
+ taintproper("Insecure dependency in chown");
+#endif
+ if (items > 2) {
+ items -= 2;
+ tot = items;
+ val = (int)str_gnum(st[++sp]);
+ val2 = (int)str_gnum(st[++sp]);
+ while (items--) {
+ if (chown(str_get(st[++sp]),val,val2))
+ tot--;
+ }
+ }
+ break;
+ case O_KILL:
+#ifdef TAINT
+ taintproper("Insecure dependency in kill");
+#endif
+ if (--items > 0) {
+ tot = items;
+ s = str_get(st[++sp]);
+ if (isupper(*s)) {
+ if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
+ s += 3;
+ if (!(val = whichsig(s)))
+ fatal("Unrecognized signal name \"%s\"",s);
+ }
+ else
+ val = (int)str_gnum(st[sp]);
+ if (val < 0) {
+ val = -val;
+ while (items--) {
+ int proc = (int)str_gnum(st[++sp]);
+#ifdef KILLPG
+ if (killpg(proc,val)) /* BSD */
+#else
+ if (kill(-proc,val)) /* SYSV */
+#endif
+ tot--;
+ }
+ }
+ else {
+ while (items--) {
+ if (kill((int)(str_gnum(st[++sp])),val))
+ tot--;
+ }
+ }
+ }
+ break;
+ case O_UNLINK:
+#ifdef TAINT
+ taintproper("Insecure dependency in unlink");
+#endif
+ tot = items;
+ while (items--) {
+ s = str_get(st[++sp]);
+ if (euid || unsafe) {
+ if (UNLINK(s))
+ tot--;
+ }
+ else { /* don't let root wipe out directories without -U */
+#ifdef SYMLINK
+ if (lstat(s,&statbuf) < 0 ||
+#else
+ if (stat(s,&statbuf) < 0 ||
+#endif
+ (statbuf.st_mode & S_IFMT) == S_IFDIR )
+ tot--;
+ else {
+ if (UNLINK(s))
+ tot--;
+ }
+ }
+ }
+ break;
+ case O_UTIME:
+#ifdef TAINT
+ taintproper("Insecure dependency in utime");
+#endif
+ if (items > 2) {
+ struct {
+ long atime,
+ mtime;
+ } utbuf;
+
+ utbuf.atime = (long)str_gnum(st[++sp]); /* time accessed */
+ utbuf.mtime = (long)str_gnum(st[++sp]); /* time modified */
+ items -= 2;
+#ifndef lint
+ tot = items;
+ while (items--) {
+ if (utime(str_get(st[++sp]),&utbuf))
+ tot--;
+ }
+#endif
+ }
+ else
+ items = 0;
+ break;
+ }
+ return tot;
+}
+
+/* Do the permissions allow some operation? Assumes statcache already set. */
+
+int
+cando(bit, effective, statbufp)
+int bit;
+int effective;
+register struct stat *statbufp;
+{
+ if ((effective ? euid : uid) == 0) { /* root is special */
+ if (bit == S_IEXEC) {
+ if (statbufp->st_mode & 0111 ||
+ (statbufp->st_mode & S_IFMT) == S_IFDIR )
+ return TRUE;
+ }
+ else
+ return TRUE; /* root reads and writes anything */
+ return FALSE;
+ }
+ if (statbufp->st_uid == (effective ? euid : uid) ) {
+ if (statbufp->st_mode & bit)
+ return TRUE; /* ok as "user" */
+ }
+ else if (ingroup((int)statbufp->st_gid,effective)) {
+ if (statbufp->st_mode & bit >> 3)
+ return TRUE; /* ok as "group" */
+ }
+ else if (statbufp->st_mode & bit >> 6)
+ return TRUE; /* ok as "other" */
+ return FALSE;
+}
+
+int
+ingroup(testgid,effective)
+int testgid;
+int effective;
+{
+ if (testgid == (effective ? egid : gid))
+ return TRUE;
+#ifdef GETGROUPS
+#ifndef NGROUPS
+#define NGROUPS 32
+#endif
+ {
+ GIDTYPE gary[NGROUPS];
+ int anum;
+
+ anum = getgroups(NGROUPS,gary);
+ while (--anum >= 0)
+ if (gary[anum] == testgid)
+ return TRUE;
+ }
+#endif
+ return FALSE;
+}
View Lorry Controller Status