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comm2.c
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C/C++ Source or Header
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1986-11-20
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14KB
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614 lines
/*
* COMM2.C
*
* (c)1986 Matthew Dillon 9 October 1986
*
* Version 2.07M by Steve Drew 10-Sep-87
*
*/
#include "shell.h"
typedef struct FileInfoBlock FIB;
/* Casting conveniences */
#define BPTR_TO_C(strtag, var) ((struct strtag *)(BADDR( (ULONG) var)))
#define PROC(task) ((struct Process *)task)
#define ROOTNODE ((struct RootNode *)DOSBase->dl_Root)
#define CLI(proc) (BPTR_TO_C(CommandLineInterface, proc->pr_CLI))
/* Externs */
extern int has_wild; /* flag set if any arg has a ? or * */
extern struct DosLibrary *DOSBase; /* dos library base pointer */
/* globals */
int cp_update;
int cp_date;
do_abortline()
{
Exec_abortline = 1;
return (0);
}
do_return()
{
Exec_abortline = 1;
if (Src_stack) {
FILE *ptr = (FILE *)Src_base[Src_stack - 1];
ptr->_bp = ptr->_bend;
ptr->_flags |= _EOF;
/* fseek (Src_base[Src_stack - 1], 0L, 2); */
return ((ac < 2) ? 0 : atoi(av[1]));
} else {
main_exit ((ac < 2) ? 0 : atoi(av[1]));
}
}
/*
* STRHEAD
*
* place a string into a variable removing everything after and including
* the 'break' character or until a space is found in the string.
*
* strhead varname breakchar string
*
*/
do_strhead()
{
register char *str = av[3];
char bc = *av[2];
while (*str && *str != bc)
++str;
*str = '\0';
set_var (LEVEL_SET, av[1], av[3]);
return (0);
}
do_strtail()
{
register char *str = av[3];
char bc = *av[2];
while (*str && *str != bc)
++str;
if (*str)
++str;
set_var (LEVEL_SET, av[1], str);
return (0);
}
/*
* if -f file (exists) or:
*
* if A < B <, >, =, <=, >=, !=, where A and B are either:
* nothing
* a string
* a value (begins w/ number)
*/
do_if(garbage, com)
char *garbage;
{
char *v1, *v2, *v3, result, num;
int n1, n2;
struct FileLock *lock;
switch (com) {
case 0:
if (If_stack && If_base[If_stack - 1]) {
If_base[If_stack++] = 1;
break;
}
result = num = 0;
if (!strcmp(av[1],"-f")) {
if (ac == 3 && (lock=(struct FileLock *)Lock(av[2], ACCESS_READ))) {
UnLock(lock);
result = 1;
}
goto do_result;
}
if (ac <= 2) { /* if $var; */
if (ac == 1 || strlen(av[1]) == 0 || (strlen(av[1]) == 1 && *av[1] == ' '))
goto do_result;
result = 1;
goto do_result;
}
if (ac != 4) {
ierror(NULL, 500);
break;
}
v1 = av[1]; v2 = av[2]; v3 = av[3];
while (*v1 == ' ')
++v1;
while (*v2 == ' ')
++v2;
while (*v3 == ' ')
++v3;
if (*v1 >= '0' && *v1 <= '9') {
num = 1;
n1 = atoi(v1);
n2 = atoi(v3);
}
while (*v2) {
switch (*v2++) {
case '>':
result |= (num) ? (n1 > n2) : (strcmp(v1, v3) > 0);
break;
case '<':
result |= (num) ? (n1 < n2) : (strcmp(v1, v3) < 0);
break;
case '=':
result |= (num) ? (n1 == n2) : (strcmp(v1, v3) ==0);
break;
default:
ierror (NULL, 503);
break;
}
}
do_result:
If_base[If_stack++] = !result;
break;
case 1:
if (If_stack > 1 && If_base[If_stack - 2])
break;
if (If_stack)
If_base[If_stack - 1] ^= 1;
break;
case 2:
if (If_stack)
--If_stack;
break;
}
disable = (If_stack) ? If_base[If_stack - 1] : 0;
if (If_stack >= MAXIF) {
fprintf(stderr,"If's too deep\n");
disable = If_stack = 0;
return(-1);
}
if (forward_goto) disable = If_base[If_stack - 1] = 0;
return (0);
}
do_label()
{
char aseek[32];
if (Src_stack == 0) {
ierror (NULL, 502);
return (-1);
}
sprintf (aseek, "%ld %d", Src_pos[Src_stack-1], If_stack);
set_var (LEVEL_LABEL + Src_stack - 1, av[1], aseek);
if (!strcmp(av[1],get_var(LEVEL_SET,V_GOTOFWD)))
forward_goto = 0;
return (0);
}
do_goto()
{
int new;
long pos;
char *lab;
if (Src_stack == 0) {
ierror (NULL, 502);
} else {
lab = get_var (LEVEL_LABEL + Src_stack - 1, av[1]);
if (lab == NULL) {
forward_goto = 1;
set_var (LEVEL_SET, V_GOTOFWD, av[1]);
return(0);
} else {
pos = atoi(lab);
fseek (Src_base[Src_stack - 1], pos, 0);
Src_pos[Src_stack - 1] = pos;
new = atoi(next_word(lab));
for (; If_stack < new; ++If_stack)
If_base[If_stack] = 0;
If_stack = new;
}
}
Exec_abortline = 1;
return (0); /* Don't execute rest of this line */
}
do_inc(garbage, com)
char *garbage;
{
char *var;
char num[32];
if (ac == 3)
com = atoi(av[2]);
var = get_var (LEVEL_SET, av[1]);
if (var) {
sprintf (num, "%d", atoi(var)+com);
set_var (LEVEL_SET, av[1], num);
}
return (0);
}
do_input()
{
char in[256], *p,*s;
int i;
for (i=1; i < ac; ++i) {
if ((gets(in)) != 0) {
for(p = in; *p; p = s) {
s = next_word(p);
if (*s) *(s-1) = 0xA0;
}
set_var (LEVEL_SET, av[i], in);
}
}
return (0);
}
do_ver()
{
puts (VERSION);
return (0);
}
do_ps()
{
/* this code fragment based on ps.c command by Dewi Williams */
register ULONG *tt; /* References TaskArray */
register int count; /* loop variable */
register UBYTE *port; /* msgport & ptr arith */
register struct Task *task; /* EXEC descriptor */
char strbuf[64]; /* scratch for btocstr() */
char cmd[40]; /* holds cmd name */
char *btocstr(); /* BCPL BSTR to ASCIIZ */
tt = (unsigned long *)(BADDR(ROOTNODE->rn_TaskArray));
printf("Proc Command Name CLI Type Pri. Address Directory\n");
Forbid(); /* need linked list consistency */
for (count = 1; count <= (int)tt[0] ; count++) {/* or just assume 20?*/
if (tt[count] == 0) continue; /* nobody home */
/* Start by pulling out MsgPort addresses from the TaskArray
* area. By making unwarranted assumptions about the layout
* of Process and Task structures, we can derive these
* descriptors. Every task has an associated process, since
* this loop drives off a CLI data area.
*/
port = (UBYTE *)tt[count];
task = (struct Task *)(port - sizeof(struct Task));
/* Sanity check just in case */
if (PROC(task)->pr_TaskNum == 0 || PROC(task)->pr_CLI == 0)
continue; /* or complain? */
printf("%2d %-20.20s %-11.11s %3d %8lx %s\n",
count,btocstr(CLI(PROC(task))->cli_CommandName, cmd),
task->tc_Node.ln_Name,
task->tc_Node.ln_Pri,task,
btocstr(CLI(PROC(task))->cli_SetName, strbuf));
}
Permit(); /* outside critical region */
return(0);
}
char *
btocstr(b, buf)
ULONG b;
char *buf;
{
register char *s;
s = (char *)BADDR(b); /* Shift & get length-prefixed str */
movmem(s +1, buf, s[0]);
buf[s[0]] = '\0';
return buf;
}
/*
* CP [-d] [-u] file file
* CP [-d] [-u] file file file... destdir
* CP [-r][-u][-d] dir dir dir... destdir
*/
char *errstr; /* let's be alittle more informative */
do_copy()
{
register int recur, ierr;
register char *destname;
register char destisdir;
register FIB *fib;
int i,opt;
errstr = "";
ierr = 0;
fib = (FIB *)AllocMem((long)sizeof(FIB), MEMF_PUBLIC);
opt = get_opt("rud",&i);
recur = (opt & 0x01);
cp_update = (opt & 0x02);
cp_date = (!(opt & 0x04)); /* the default is keep orignal file date */
destname = av[ac - 1];
if (ac < i + 2) {
ierr = 500;
goto done;
}
destisdir = isdir(destname);
if (ac > i + 2 && !destisdir) {
ierr = 507;
goto done;
}
/*
* copy set: reduce to:
* file to file file to file
* dir to file (NOT ALLOWED)
* file to dir dir to dir
* dir to dir dir to dir
*
*/
for (; i < ac - 1; ++i) {
short srcisdir = isdir(av[i]);
if (srcisdir && has_wild && (ac >2)) /* hack to stop dir's from */
continue; /* getting copied if specified */
/* from wild expansion */
if (CHECKBREAK())
break;
if (srcisdir) {
struct FileLock *srcdir, *destdir;
if (!destisdir) {
if (destdir = (struct FileLock *)Lock(destname, ACCESS_READ)) {
UnLock(destdir);
ierr = 507; /* disallow dir to file */
goto done;
}
if (destdir = (struct FileLock *)CreateDir(destname))
UnLock(destdir);
destisdir = 1;
}
if (!(destdir = (struct FileLock *)Lock(destname, ACCESS_READ))) {
ierr = 205;
errstr = destname;
goto done;
}
if (!(srcdir = (struct FileLock *)Lock(av[i], ACCESS_READ))) {
ierr = 205;
errstr = av[i];
UnLock(destdir);
goto done;
}
ierr = copydir(srcdir, destdir, recur);
UnLock(srcdir);
UnLock(destdir);
if (ierr)
break;
} else { /* FILE to DIR, FILE to FILE */
struct FileLock *destdir, *srcdir, *tmp;
char *destfilename;
srcdir = (struct FileLock *)(Myprocess->pr_CurrentDir);
if ((tmp = (struct FileLock *)Lock(av[i], ACCESS_READ)) == NULL || !Examine(tmp,fib)){
if (tmp) UnLock(tmp);
ierr = 205;
errstr = av[i];
goto done;
}
UnLock(tmp);
if (destisdir) {
destdir = (struct FileLock *)Lock(destname, ACCESS_READ);
destfilename = fib->fib_FileName;
} else {
destdir = srcdir;
destfilename = destname;
}
printf(" %s..",av[i]);
fflush(stdout);
ierr = copyfile(av[i], srcdir, destfilename, destdir);
if (destisdir)
UnLock(destdir);
if (ierr)
break;
}
}
done:
FreeMem(fib, (long)sizeof(*fib));
if (ierr) {
ierror(errstr, ierr);
return(20);
}
return(0);
}
copydir(srcdir, destdir, recur)
register struct FileLock *srcdir, *destdir;
{
struct FileLock *cwd;
register FIB *srcfib;
register struct FileLock *destlock, *srclock;
int ierr;
static int level;
level++;
ierr = 0;
srcfib = (FIB *)AllocMem((long)sizeof(FIB), MEMF_PUBLIC);
if (Examine(srcdir, srcfib)) {
while (ExNext(srcdir, srcfib)) {
if (CHECKBREAK())
break;
if (srcfib->fib_DirEntryType < 0) {
printf("%*s%s..",(level-1) * 6," ",srcfib->fib_FileName);
fflush(stdout);
ierr = copyfile(srcfib->fib_FileName,srcdir,srcfib->fib_FileName,destdir);
if (ierr)
break;
} else {
if (recur) {
cwd = (struct FileLock *)CurrentDir(srcdir);
if (srclock = (struct FileLock *)Lock(srcfib->fib_FileName, ACCESS_READ)) {
CurrentDir(destdir);
if (!(destlock = (struct FileLock *)
Lock(srcfib->fib_FileName))) {
destlock = (struct FileLock *)CreateDir(srcfib->fib_FileName);
printf("%*s%s (Dir)....[Created]\n",(level-1) * 6,
" ",srcfib->fib_FileName);
/* UnLock and re Lock if newly created
for file_date() to work properly
*/
if (destlock) UnLock(destlock);
destlock = (struct FileLock *)Lock(srcfib->fib_FileName);
}
else
printf("%*s%s (Dir)\n",(level-1) * 6," ",srcfib->fib_FileName);
if (destlock) {
ierr = copydir(srclock, destlock, recur);
UnLock(destlock);
} else {
ierr = (int)((long)IoErr());
}
UnLock(srclock);
} else {
ierr = (int)((long)IoErr());
}
CurrentDir(cwd);
if (ierr)
break;
}
}
}
} else {
ierr = (int)((long)IoErr());
}
--level;
FreeMem(srcfib, (long)sizeof(FIB));
return(ierr);
}
copyfile(srcname, srcdir, destname, destdir)
char *srcname, *destname;
struct FileLock *srcdir, *destdir;
{
struct FileLock *cwd;
struct FileHandle *f1, *f2;
struct DateStamp *ds;
long i;
int stat,ierr;
char *buf;
struct DPTR *dp, *dps = NULL;
buf = (char *)AllocMem(8192L, MEMF_PUBLIC|MEMF_CLEAR);
if (buf == NULL) {
ierr = 103;
goto fail;
}
ierr = 0;
cwd = (struct FileLock *)CurrentDir(srcdir);
f1 = Open(srcname, MODE_OLDFILE);
if (f1 == NULL) {
errstr = srcname;
ierr = 205;
goto fail;
}
dps = dopen(srcname,&stat);
ds = &dps->fib->fib_Date;
CurrentDir(destdir);
if (cp_update && (dp = dopen (destname, &stat))) {
long desttime,srctime;
struct DateStamp *dd;
dd = &dp->fib->fib_Date;
desttime = dd->ds_Days * 86400 + dd->ds_Minute * 60 +
dd->ds_Tick/TICKS_PER_SECOND;
srctime = ds->ds_Days * 86400 + ds->ds_Minute * 60 +
ds->ds_Tick/TICKS_PER_SECOND;
if (srctime <= desttime &&
!strcmp(dps->fib->fib_FileName,dp->fib->fib_FileName)) {
dclose(dp);
Close(f1);
printf("..not newer\n");
goto fail;
}
dclose(dp);
}
f2 = Open(destname, MODE_NEWFILE);
if (f2 == NULL) {
Close(f1);
ierr = (int)((long)IoErr());
errstr = destname;
goto fail;
}
while (i = Read(f1, buf, 8192L))
if (Write(f2, buf, i) != i) {
ierr = (int)((long)IoErr());
break;
}
Close(f2);
Close(f1);
if (!ierr) {
if (cp_date) file_date(ds,destname);
printf("..copied\n");
}
else {
DeleteFile(destname);
}
fail:
dclose(dps);
if (buf)
FreeMem(buf, 8192L);
CurrentDir(cwd);
return(ierr);
}
file_date(date,name)
struct DateStamp *date;
char *name;
{
UBYTE *ptr;
struct MsgPort *task;
struct FileLock *dirlock;
struct DPTR *tmp;
int stat;
long ret, dos_packet();
if (!(task = (struct MsgPort *)DeviceProc(name)))
return(1);
if (tmp = dopen(name, &stat)) {
dirlock = (struct FileLock *)ParentDir(tmp->lock);
ptr = (UBYTE *)AllocMem(64L,MEMF_PUBLIC);
strcpy((ptr + 1),tmp->fib->fib_FileName);
*ptr = strlen(tmp->fib->fib_FileName);
dclose(tmp);
ret = dos_packet(task,34L,NULL,dirlock,
(ULONG)&ptr[0] >> 2L,date);
FreeMem(ptr,64L);
UnLock(dirlock);
}
}