595 lines
14 KiB
C
595 lines
14 KiB
C
/*
|
|
* Copyright (c) 1990 Carnegie Mellon University
|
|
* All Rights Reserved.
|
|
*
|
|
* Permission to use, copy, modify and distribute this software and its
|
|
* documentation is hereby granted, provided that both the copyright
|
|
* notice and this permission notice appear in all copies of the
|
|
* software, derivative works or modified versions, and any portions
|
|
* thereof, and that both notices appear in supporting documentation.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND CARNEGIE MELLON UNIVERSITY
|
|
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT
|
|
* SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE FOR ANY SPECIAL, DIRECT,
|
|
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
|
|
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
|
|
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
|
|
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*
|
|
* Users of this software agree to return to Carnegie Mellon any
|
|
* improvements or extensions that they make and grant Carnegie the
|
|
* rights to redistribute these changes.
|
|
*
|
|
* Export of this software is permitted only after complying with the
|
|
* regulations of the U.S. Deptartment of Commerce relating to the
|
|
* Export of Technical Data.
|
|
*/
|
|
/*
|
|
* setpath --- smart interface for setting path variables
|
|
*
|
|
* usage: setpath(paths, cmds, localsyspath, dosuffix, printerrors)
|
|
* char **paths, **cmds, *localsyspath;
|
|
* int dosuffix, printerrors;
|
|
*
|
|
* The 'paths' argument is a list of pointers to path lists of the
|
|
* form "name=value" where name is the name of the path and value
|
|
* is a colon separated list of directories. There can never be
|
|
* more than MAXDIRS (64) directories in a path.
|
|
*
|
|
* The 'cmds' argument may be a sequence of any of the following:
|
|
* -r reset path to default
|
|
* -i newpath insert newpath before localsyspath
|
|
* -ia oldpath newpath insert newpath after oldpath
|
|
* -ib oldpath newpath insert newpath before oldpath
|
|
* -i# newpath insert newpath at position #
|
|
* -d oldpath delete oldpath
|
|
* -d# delete path at position #
|
|
* -c oldpath newpath change oldpath to newpath
|
|
* -c# newpath change position # to newpath
|
|
*
|
|
* The "-i newpath" command is equivilent to "-ib 'localsyspath' newpath".
|
|
*
|
|
* If 'dosuffix' is true, the appropriate suffix will be added to
|
|
* all command operands for any system path in 'paths'.
|
|
*
|
|
* Both of the 'paths' and 'cmds' lists are terminated by a NULL
|
|
* entry.
|
|
*
|
|
* if 'printerrors' is true, setpath will printf error diagnostics.
|
|
*
|
|
* WARNING !!!: Under no circumstances should anyone change this
|
|
* module without fully understanding the impact on the C shell.
|
|
* The C shell has it's own malloc and printf routines and this
|
|
* module was carefully written taking that into account. Do not
|
|
* use any stdio routines from this module except printf.
|
|
*
|
|
**********************************************************************
|
|
* HISTORY
|
|
*
|
|
* Revision 1.4 90/12/11 17:58:44 mja
|
|
* Add copyright/disclaimer for distribution.
|
|
*
|
|
* 05-Jun-88 Glenn Marcy (gm0w) at Carnegie-Mellon University
|
|
* Make all non-entry points static.
|
|
*
|
|
* 30-Apr-88 Glenn Marcy (gm0w) at Carnegie-Mellon University
|
|
* Added -r switch to reset paths to their default values.
|
|
*
|
|
* 06-Jan-86 Glenn Marcy (gm0w) at Carnegie-Mellon University
|
|
* Created from old setpath program for the shell.
|
|
*
|
|
**********************************************************************
|
|
*/
|
|
#include "sh.h"
|
|
RCSID("$tcsh: ma.setp.c,v 1.19 2007/11/20 20:03:51 christos Exp $")
|
|
|
|
#ifdef MACH
|
|
|
|
#define MAXDIRS 64 /* max directories on a path */
|
|
#ifndef NULL
|
|
# define NULL 0
|
|
#endif
|
|
|
|
static int npaths; /* # pathlist arguments */
|
|
|
|
static struct pelem {
|
|
struct pelem *pnext; /* pointer to next path */
|
|
char *pname; /* name of pathlist */
|
|
char *psuf; /* suffix for pathlist */
|
|
char *pdef; /* default for pathlist */
|
|
int pdirs; /* # directories on each pathlist */
|
|
char *pdir[MAXDIRS]; /* directory names for each pathlist */
|
|
} *pathhead = NULL;
|
|
|
|
static struct {
|
|
char *name;
|
|
char *suffix;
|
|
char *defalt;
|
|
} syspath[] = {
|
|
"PATH", "/bin", ":/usr/ucb:/bin:/usr/bin",
|
|
"CPATH", "/include", ":/usr/include",
|
|
"LPATH", "/lib", ":/lib:/usr/lib",
|
|
"MPATH", "/man", ":/usr/man",
|
|
"EPATH", "/maclib", "",
|
|
0, 0, 0
|
|
};
|
|
|
|
static int sflag;
|
|
static int eflag;
|
|
|
|
#define INVALID { \
|
|
if (eflag) xprintf(CGETS(10, 1, \
|
|
"setpath: invalid command '%s'.\n"), cmd); \
|
|
freepaths(); \
|
|
return(-1); \
|
|
}
|
|
|
|
#define TOOFEW { \
|
|
if (eflag) xprintf(CGETS(10, 2, \
|
|
"setpath: insufficient arguments to command '%s'.\n"), cmd); \
|
|
freepaths(); \
|
|
return(-1); \
|
|
}
|
|
|
|
static int initpaths (char **);
|
|
static void savepaths (char **);
|
|
static void freepaths (void);
|
|
static void tcsh_rcmd (char *);
|
|
static void icmd (char *, char *);
|
|
static void iacmd (char *, char *);
|
|
static void ibcmd (char *, char *);
|
|
static void incmd (char *, int);
|
|
static void insert (struct pelem *, int, char *);
|
|
static void dcmd (char *);
|
|
static void dncmd (int);
|
|
static void delete (struct pelem *, int);
|
|
static void ccmd (char *, char *);
|
|
static void cncmd (char *, int);
|
|
static void change (struct pelem *, int, char *);
|
|
static int locate (struct pelem *, char *);
|
|
|
|
|
|
|
|
int
|
|
setpath(char **paths, char **cmds, char *localsyspath, int dosuffix,
|
|
int printerrors)
|
|
{
|
|
char *cmd, *cmd1, *cmd2;
|
|
int ncmd;
|
|
|
|
sflag = dosuffix;
|
|
eflag = printerrors;
|
|
if (initpaths(paths) < 0)
|
|
return(-1);
|
|
if (npaths == 0)
|
|
return(0);
|
|
for (ncmd = 0; cmd = cmds[ncmd]; ncmd++) {
|
|
if (cmd[0] != '-')
|
|
INVALID;
|
|
cmd1 = cmds[ncmd+1];
|
|
cmd2 = cmds[ncmd+2];
|
|
switch (cmd[1]) {
|
|
case 'r':
|
|
if (cmd[2] != '\0')
|
|
INVALID;
|
|
tcsh_rcmd(localsyspath);
|
|
break;
|
|
case 'i':
|
|
if (cmd[2] == '\0') {
|
|
ncmd++;
|
|
if (cmd1 == NULL) TOOFEW;
|
|
icmd(cmd1, localsyspath);
|
|
} else if (isdigit(cmd[2])) {
|
|
ncmd++;
|
|
if (cmd1 == NULL) TOOFEW;
|
|
incmd(cmd1, atoi(cmd+2));
|
|
} else if (cmd[3] != '\0' || (cmd[2] != 'a' && cmd[2] != 'b')) {
|
|
INVALID;
|
|
} else {
|
|
ncmd += 2;
|
|
if (cmd1 == NULL || cmd2 == NULL) TOOFEW;
|
|
if (cmd[2] == 'a')
|
|
iacmd(cmd1, cmd2);
|
|
else
|
|
ibcmd(cmd1, cmd2);
|
|
}
|
|
break;
|
|
case 'd':
|
|
if (cmd[2] == '\0') {
|
|
ncmd++;
|
|
if (cmd1 == NULL) TOOFEW;
|
|
dcmd(cmd1);
|
|
} else if (isdigit(cmd[2]))
|
|
dncmd(atoi(cmd+2));
|
|
else {
|
|
INVALID;
|
|
}
|
|
break;
|
|
case 'c':
|
|
if (cmd[2] == '\0') {
|
|
ncmd += 2;
|
|
if (cmd1 == NULL || cmd2 == NULL) TOOFEW;
|
|
ccmd(cmd1, cmd2);
|
|
} else if (isdigit(cmd[2])) {
|
|
ncmd++;
|
|
if (cmd1 == NULL) TOOFEW;
|
|
cncmd(cmd1, atoi(cmd+2));
|
|
} else {
|
|
INVALID;
|
|
}
|
|
break;
|
|
default:
|
|
INVALID;
|
|
}
|
|
}
|
|
savepaths(paths);
|
|
freepaths();
|
|
return(0);
|
|
}
|
|
|
|
static int
|
|
initpaths(char **paths)
|
|
{
|
|
char *path, *val, *p, *q;
|
|
int i, done;
|
|
struct pelem *pe, *pathend;
|
|
|
|
freepaths();
|
|
for (npaths = 0; path = paths[npaths]; npaths++) {
|
|
val = index(path, '=');
|
|
if (val == NULL) {
|
|
if (eflag)
|
|
xprintf(CGETS(10, 3,
|
|
"setpath: value missing in path '%s'\n"), path);
|
|
freepaths();
|
|
return(-1);
|
|
}
|
|
*val++ = '\0';
|
|
pe = xmalloc(sizeof(struct pelem));
|
|
setzero(pe, sizeof(struct pelem));
|
|
if (pathhead == NULL)
|
|
pathhead = pathend = pe;
|
|
else {
|
|
pathend->pnext = pe;
|
|
pathend = pe;
|
|
}
|
|
p = strsave(path);
|
|
pe->pname = p;
|
|
pe->psuf = "";
|
|
pe->pdef = "";
|
|
for (i = 0; syspath[i].name; i++)
|
|
if (strcmp(pe->pname, syspath[i].name) == 0) {
|
|
pe->psuf = syspath[i].suffix;
|
|
pe->pdef = syspath[i].defalt;
|
|
break;
|
|
}
|
|
q = val;
|
|
for (;;) {
|
|
q = index(p = q, ':');
|
|
done = (q == NULL);
|
|
if (!done)
|
|
*q++ = '\0';
|
|
p = strsave(p);
|
|
pe->pdir[pe->pdirs] = p;
|
|
pe->pdirs++;
|
|
if (done)
|
|
break;
|
|
}
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
static void
|
|
savepaths(char **paths)
|
|
{
|
|
char *p, *q;
|
|
int npath, i, len;
|
|
struct pelem *pe;
|
|
|
|
for (npath = 0, pe = pathhead; pe; npath++, pe = pe->pnext) {
|
|
len = strlen(pe->pname) + 1;
|
|
if (pe->pdirs == 0)
|
|
len++;
|
|
else for (i = 0; i < pe->pdirs; i++)
|
|
len += strlen(pe->pdir[i]) + 1;
|
|
p = xmalloc((unsigned)len);
|
|
paths[npath] = p;
|
|
for (q = pe->pname; *p = *q; p++, q++);
|
|
*p++ = '=';
|
|
if (pe->pdirs != 0) {
|
|
for (i = 0; i < pe->pdirs; i++) {
|
|
for (q = pe->pdir[i]; *p = *q; p++, q++);
|
|
*p++ = ':';
|
|
}
|
|
p--;
|
|
}
|
|
*p = '\0';
|
|
}
|
|
}
|
|
|
|
static void
|
|
freepaths(void)
|
|
{
|
|
char *p;
|
|
int i;
|
|
struct pelem *pe;
|
|
|
|
if (npaths == 0 || pathhead == NULL)
|
|
return;
|
|
while (pe = pathhead) {
|
|
if (pe->pname) {
|
|
for (i = 0; i < pe->pdirs; i++) {
|
|
if (pe->pdir[i] == NULL)
|
|
continue;
|
|
p = pe->pdir[i];
|
|
pe->pdir[i] = NULL;
|
|
xfree((ptr_t) p);
|
|
}
|
|
pe->pdirs = 0;
|
|
p = pe->pname;
|
|
pe->pname = NULL;
|
|
xfree((ptr_t) p);
|
|
}
|
|
pathhead = pe->pnext;
|
|
xfree((ptr_t) pe);
|
|
}
|
|
npaths = 0;
|
|
}
|
|
|
|
/***********************************************
|
|
*** R E S E T A P A T H N A M E ***
|
|
***********************************************/
|
|
|
|
static void
|
|
tcsh_rcmd(char *localsyspath) /* reset path with localsyspath */
|
|
{
|
|
int n, done;
|
|
char *new, *p;
|
|
struct pelem *pe;
|
|
char newbuf[MAXPATHLEN+1];/*FIXBUF*/
|
|
|
|
for (pe = pathhead; pe; pe = pe->pnext) {
|
|
new = newbuf;
|
|
*new = '\0';
|
|
if (localsyspath != NULL) {
|
|
*new = ':';
|
|
(void) strcpy(new + 1, localsyspath);
|
|
(void) strcat(new, pe->psuf);
|
|
}
|
|
(void) strcat(new, pe->pdef);
|
|
for (n = 0; n < pe->pdirs; n++) {
|
|
if (pe->pdir[n] == NULL)
|
|
continue;
|
|
p = pe->pdir[n];
|
|
pe->pdir[n] = NULL;
|
|
xfree((ptr_t) p);
|
|
}
|
|
pe->pdirs = 0;
|
|
for (;;) {
|
|
new = index(p = new, ':');
|
|
done = (new == NULL);
|
|
if (!done)
|
|
*new++ = '\0';
|
|
p = strsave(p);
|
|
pe->pdir[pe->pdirs] = p;
|
|
pe->pdirs++;
|
|
if (done)
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/***********************************************
|
|
*** I N S E R T A P A T H N A M E ***
|
|
***********************************************/
|
|
|
|
static void
|
|
icmd(char *path, char *localsyspath) /* insert path before localsyspath */
|
|
{
|
|
int n;
|
|
char *new;
|
|
struct pelem *pe;
|
|
char newbuf[MAXPATHLEN+1];/*FIXBUF*/
|
|
|
|
for (pe = pathhead; pe; pe = pe->pnext) {
|
|
if (sflag)
|
|
new = localsyspath;
|
|
else {
|
|
new = newbuf;
|
|
(void) strcpy(new, localsyspath);
|
|
(void) strcat(new, pe->psuf);
|
|
}
|
|
n = locate(pe, new);
|
|
if (n >= 0)
|
|
insert(pe, n, path);
|
|
else
|
|
insert(pe, 0, path);
|
|
}
|
|
}
|
|
|
|
static void
|
|
iacmd(char *inpath, char *path) /* insert path after inpath */
|
|
{
|
|
int n;
|
|
struct pelem *pe;
|
|
|
|
for (pe = pathhead; pe; pe = pe->pnext) {
|
|
n = locate(pe, inpath);
|
|
if (n >= 0)
|
|
insert(pe, n + 1, path);
|
|
else
|
|
xprintf(CGETS(10, 4, "setpath: %s not found in %s\n"),
|
|
inpath, pe->pname);
|
|
}
|
|
}
|
|
|
|
static void
|
|
ibcmd(char *inpath, char *path) /* insert path before inpath */
|
|
{
|
|
int n;
|
|
struct pelem *pe;
|
|
|
|
for (pe = pathhead; pe; pe = pe->pnext) {
|
|
n = locate(pe, inpath);
|
|
if (n >= 0)
|
|
insert(pe, n, path);
|
|
else
|
|
xprintf(CGETS(10, 4, "setpath: %s not found in %s\n"),
|
|
inpath, pe->pname);
|
|
}
|
|
}
|
|
|
|
static void
|
|
incmd(char *path, int n) /* insert path at position n */
|
|
{
|
|
struct pelem *pe;
|
|
|
|
for (pe = pathhead; pe; pe = pe->pnext)
|
|
insert(pe, n, path);
|
|
}
|
|
|
|
static void
|
|
insert(struct pelem *pe, int loc, char *key)
|
|
{
|
|
int i;
|
|
char *new;
|
|
char newbuf[2000];/*FIXBUF*/
|
|
|
|
if (sflag) { /* add suffix */
|
|
new = newbuf;
|
|
(void) strcpy(new, key);
|
|
(void) strcat(new, pe->psuf);
|
|
} else
|
|
new = key;
|
|
new = strsave(new);
|
|
for (i = pe->pdirs; i > loc; --i)
|
|
pe->pdir[i] = pe->pdir[i-1];
|
|
if (loc > pe->pdirs)
|
|
loc = pe->pdirs;
|
|
pe->pdir[loc] = new;
|
|
pe->pdirs++;
|
|
}
|
|
|
|
/***********************************************
|
|
*** D E L E T E A P A T H N A M E ***
|
|
***********************************************/
|
|
|
|
static void
|
|
dcmd(char *path) /* delete path */
|
|
{
|
|
int n;
|
|
struct pelem *pe;
|
|
|
|
for (pe = pathhead; pe; pe = pe->pnext) {
|
|
n = locate(pe, path);
|
|
if (n >= 0)
|
|
delete(pe, n);
|
|
else
|
|
xprintf(CGETS(10, 4, "setpath: %s not found in %s\n"),
|
|
path, pe->pname);
|
|
}
|
|
}
|
|
|
|
static void
|
|
dncmd(int n) /* delete at position n */
|
|
{
|
|
struct pelem *pe;
|
|
|
|
for (pe = pathhead; pe; pe = pe->pnext) {
|
|
if (n < pe->pdirs)
|
|
delete(pe, n);
|
|
else
|
|
xprintf(CGETS(10, 5,
|
|
"setpath: %d not valid position in %s\n"),
|
|
n, pe->pname);
|
|
}
|
|
}
|
|
|
|
static void
|
|
delete(struct pelem *pe, int n)
|
|
{
|
|
int d;
|
|
|
|
xfree((ptr_t) (pe->pdir[n]));
|
|
for (d = n; d < pe->pdirs - 1; d++)
|
|
pe->pdir[d] = pe->pdir[d+1];
|
|
--pe->pdirs;
|
|
}
|
|
|
|
/***********************************************
|
|
*** C H A N G E A P A T H N A M E ***
|
|
***********************************************/
|
|
|
|
static void
|
|
ccmd(char *inpath, char *path) /* change inpath to path */
|
|
{
|
|
int n;
|
|
struct pelem *pe;
|
|
|
|
for (pe = pathhead; pe; pe = pe->pnext) {
|
|
n = locate(pe, inpath);
|
|
if (n >= 0)
|
|
change(pe, n, path);
|
|
else
|
|
xprintf(CGETS(10, 4, "setpath: %s not found in %s\n"),
|
|
inpath, pe->pname);
|
|
}
|
|
}
|
|
|
|
static void
|
|
cncmd(char *path, int n) /* change at position n to path */
|
|
{
|
|
struct pelem *pe;
|
|
|
|
for (pe = pathhead; pe; pe = pe->pnext) {
|
|
if (n < pe->pdirs)
|
|
change(pe, n, path);
|
|
else
|
|
xprintf(CGETS(10, 5,
|
|
"setpath: %d not valid position in %s\n"),
|
|
n, pe->pname);
|
|
}
|
|
}
|
|
|
|
static void
|
|
change(struct pelem *pe, int loc, char *key)
|
|
{
|
|
char *new;
|
|
char newbuf[MAXPATHLEN+1];/*FIXBUF*/
|
|
|
|
if (sflag) { /* append suffix */
|
|
new = newbuf;
|
|
(void) strcpy(new, key);
|
|
(void) strcat(new, pe->psuf);
|
|
} else
|
|
new = key;
|
|
new = strsave(new);
|
|
xfree((ptr_t) (pe->pdir[loc]));
|
|
pe->pdir[loc] = new;
|
|
}
|
|
|
|
/***************************************
|
|
*** F I N D P A T H N A M E ***
|
|
***************************************/
|
|
|
|
static int
|
|
locate(struct pelem *pe, char *key)
|
|
{
|
|
int i;
|
|
char *realkey;
|
|
char keybuf[MAXPATHLEN+1];/*FIXBUF*/
|
|
|
|
if (sflag) {
|
|
realkey = keybuf;
|
|
(void) strcpy(realkey, key);
|
|
(void) strcat(realkey, pe->psuf);
|
|
} else
|
|
realkey = key;
|
|
for (i = 0; i < pe->pdirs; i++)
|
|
if (strcmp(pe->pdir[i], realkey) == 0)
|
|
break;
|
|
return((i < pe->pdirs) ? i : -1);
|
|
}
|
|
#endif
|