freebsd-dev/usr.sbin/sysinstall/dispatch.c
Robert Watson 0c09bcb0e8 Compensate for default disabling of network services in inetd.conf(5)
by providing the opportunity to edit inetd.conf during the system
installation process.  The following modifications were made:

(1) Expand the Anonymous FTP description dialog to indicate that inetd
    and ftpd must be enabled before it can be used.

(2) Introduce a new configInetd() pair of dialogs, the first describing
    inetd, giving a couple of examples of services that require it, and
    hinting at potential risk, then asking the user if they wish to
    enable it.  The second indicates that inetd.conf must be configured
    to enabled specific services, and asks if the user would like to
    load inetd.conf into the editor to modify it.  Add this
    configuration action to the index.

There are some further improvements that might be considered:

(1) Provide a more inetd.conf-specific configuration tool that speaks
    inetd.conf(5).  However, this is made difficult by the "yet another
    configuration format" nature of inetd.conf, as well as its use of
    commenting to disable services, rather than an in-syntax way to
    disable a service without commenting it out.  Submissions here
    would probably be welcome.

(2) There's some overlap between settings in the somewhat obtuse
    Security Profile mechanism and other settings, including the inetd
    setting, and NFS server configuration.  As features become
    individually tunable, they should probably be removed from the
    security profile mechanism.  Otherwise, somewhat counter-intuitively,
    sysinstall (in practice) queries multiple times whether inetd, nfsd,
    etc, should be enabled/disabled.  A possible future direction might
    be to drive profiles not by degree of paranoia, rather, the set
    of services desired.  Or simply to remove the Security Profile
    mechanism and resort to feature-driven configuration.

Reviewed by:	imp, chris, jake, nate, -arch, -stable
2001-08-02 03:25:16 +00:00

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/*
* The new sysinstall program.
*
* This is probably the last program in the `sysinstall' line - the next
* generation being essentially a complete rewrite.
*
* $FreeBSD$
*
* Copyright (c) 1995
* Jordan Hubbard. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer,
* verbatim and that no modifications are made prior to this
* point in the file.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JORDAN HUBBARD ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL JORDAN HUBBARD OR HIS PETS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, LIFE OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include "sysinstall.h"
#include <ctype.h>
#include <errno.h>
#include <sys/signal.h>
#include <sys/fcntl.h>
#include "list.h"
static int dispatch_shutdown(dialogMenuItem *unused);
static int dispatch_systemExecute(dialogMenuItem *unused);
static int dispatch_msgConfirm(dialogMenuItem *unused);
static struct _word {
char *name;
int (*handler)(dialogMenuItem *self);
} resWords[] = {
{ "configAnonFTP", configAnonFTP },
{ "configRouter", configRouter },
{ "configInetd", configInetd },
{ "configNFSServer", configNFSServer },
{ "configNTP", configNTP },
{ "configPCNFSD", configPCNFSD },
{ "configPackages", configPackages },
{ "configUsers", configUsers },
{ "configXSetup", configXSetup },
{ "configXDesktop", configXDesktop },
{ "diskPartitionEditor", diskPartitionEditor },
{ "diskPartitionWrite", diskPartitionWrite },
{ "diskLabelEditor", diskLabelEditor },
{ "diskLabelCommit", diskLabelCommit },
{ "distReset", distReset },
{ "distSetCustom", distSetCustom },
{ "distUnsetCustom", distUnsetCustom },
{ "distSetDeveloper", distSetDeveloper },
{ "distSetXDeveloper", distSetXDeveloper },
{ "distSetKernDeveloper", distSetKernDeveloper },
{ "distSetUser", distSetUser },
{ "distSetXUser", distSetXUser },
{ "distSetMinimum", distSetMinimum },
{ "distSetEverything", distSetEverything },
{ "distSetSrc", distSetSrc },
{ "distSetXF86", distSetXF86 },
{ "distExtractAll", distExtractAll },
{ "docBrowser", docBrowser },
{ "docShowDocument", docShowDocument },
{ "installCommit", installCommit },
{ "installExpress", installExpress },
{ "installStandard", installStandard },
{ "installUpgrade", installUpgrade },
{ "installFixupBin", installFixupBin },
{ "installFixupXFree", installFixupXFree },
{ "installFixitHoloShell", installFixitHoloShell },
{ "installFixitCDROM", installFixitCDROM },
{ "installFixitFloppy", installFixitFloppy },
{ "installFilesystems", installFilesystems },
{ "installVarDefaults", installVarDefaults },
{ "loadConfig", dispatch_load_file },
{ "loadFloppyConfig", dispatch_load_floppy },
{ "mediaSetCDROM", mediaSetCDROM },
{ "mediaSetFloppy", mediaSetFloppy },
{ "mediaSetDOS", mediaSetDOS },
{ "mediaSetTape", mediaSetTape },
{ "mediaSetFTP", mediaSetFTP },
{ "mediaSetFTPActive", mediaSetFTPActive },
{ "mediaSetFTPPassive", mediaSetFTPPassive },
{ "mediaSetHTTP", mediaSetHTTP },
{ "mediaSetUFS", mediaSetUFS },
{ "mediaSetNFS", mediaSetNFS },
{ "mediaSetFTPUserPass", mediaSetFTPUserPass },
{ "mediaSetCPIOVerbosity", mediaSetCPIOVerbosity },
{ "mediaGetType", mediaGetType },
{ "msgConfirm", dispatch_msgConfirm },
{ "optionsEditor", optionsEditor },
{ "packageAdd", packageAdd },
{ "addGroup", userAddGroup },
{ "addUser", userAddUser },
{ "shutdown", dispatch_shutdown },
{ "system", dispatch_systemExecute },
{ "dumpVariables", dump_variables },
{ "tcpMenuSelect", tcpMenuSelect },
{ NULL, NULL },
};
/*
* Helper routines for buffering data.
*
* We read an entire configuration into memory before executing it
* so that we are truely standalone and can do things like nuke the
* file or disk we're working on.
*/
typedef struct command_buffer_ {
qelement queue;
char * string;
} command_buffer;
static void
dispatch_free_command(command_buffer *item)
{
REMQUE(item);
free(item->string);
free(item);
}
static void
dispatch_free_all(qelement *head)
{
command_buffer *item;
while (!EMPTYQUE(*head)) {
item = (command_buffer *) head->q_forw;
dispatch_free_command(item);
}
}
static command_buffer *
dispatch_add_command(qelement *head, char *string)
{
command_buffer *new;
new = malloc(sizeof(command_buffer));
if (!new)
return NULL;
new->string = strdup(string);
INSQUEUE(new, head->q_back);
return new;
}
/*
* Command processing
*/
/* Just convenience */
static int
dispatch_shutdown(dialogMenuItem *unused)
{
systemShutdown(0);
return DITEM_FAILURE;
}
static int
dispatch_systemExecute(dialogMenuItem *unused)
{
char *cmd = variable_get(VAR_COMMAND);
if (cmd)
return systemExecute(cmd) ? DITEM_FAILURE : DITEM_SUCCESS;
else
msgDebug("_systemExecute: No command passed in `command' variable.\n");
return DITEM_FAILURE;
}
static int
dispatch_msgConfirm(dialogMenuItem *unused)
{
char *msg = variable_get(VAR_COMMAND);
if (msg) {
msgConfirm("%s", msg);
return DITEM_SUCCESS;
}
msgDebug("_msgConfirm: No message passed in `command' variable.\n");
return DITEM_FAILURE;
}
static int
call_possible_resword(char *name, dialogMenuItem *value, int *status)
{
int i, rval;
rval = 0;
for (i = 0; resWords[i].name; i++) {
if (!strcmp(name, resWords[i].name)) {
*status = resWords[i].handler(value);
rval = 1;
break;
}
}
return rval;
}
/* For a given string, call it or spit out an undefined command diagnostic */
int
dispatchCommand(char *str)
{
int i;
char *cp;
if (!str || !*str) {
msgConfirm("Null or zero-length string passed to dispatchCommand");
return DITEM_FAILURE;
}
/* If it's got a newline, trim it */
if ((cp = index(str, '\n')) != NULL)
*cp = '\0';
/* If it's got a `=' sign in there, assume it's a variable setting */
if (index(str, '=')) {
if (isDebug())
msgDebug("dispatch: setting variable `%s'\n", str);
variable_set(str, 0);
i = DITEM_SUCCESS;
}
else {
/* A command might be a pathname if it's encoded in argv[0], which
we also support */
if ((cp = rindex(str, '/')) != NULL)
str = cp + 1;
if (isDebug())
msgDebug("dispatch: calling resword `%s'\n", str);
if (!call_possible_resword(str, NULL, &i)) {
msgNotify("Warning: No such command ``%s''", str);
i = DITEM_FAILURE;
}
}
return i;
}
/*
* File processing
*/
static qelement *
dispatch_load_fp(FILE *fp)
{
qelement *head;
char buf[BUFSIZ], *cp;
head = malloc(sizeof(qelement));
if (!head)
return NULL;
INITQUE(*head);
while (fgets(buf, sizeof buf, fp)) {
if ((cp = strchr(buf, '\n')) != NULL)
*cp = '\0';
if (*buf == '\0' || *buf == '#')
continue;
if (!dispatch_add_command(head, buf))
return NULL;
}
return head;
}
static int
dispatch_execute(qelement *head)
{
int result = DITEM_SUCCESS;
command_buffer *item;
char *old_interactive;
if (!head)
return result | DITEM_FAILURE;
old_interactive = variable_get(VAR_NONINTERACTIVE);
if (old_interactive)
old_interactive = strdup(old_interactive); /* save copy */
/* Hint to others that we're running from a script, should they care */
variable_set2(VAR_NONINTERACTIVE, "yes", 0);
while (!EMPTYQUE(*head)) {
item = (command_buffer *) head->q_forw;
if (DITEM_STATUS(dispatchCommand(item->string)) != DITEM_SUCCESS) {
/*
* Allow a user to prefix a command with "noError" to cause
* us to ignore any errors for that one command.
*/
if (variable_get(VAR_NO_ERROR))
variable_unset(VAR_NO_ERROR);
else {
msgConfirm("Command `%s' failed - rest of script aborted.\n",
item->string);
result |= DITEM_FAILURE;
break;
}
}
dispatch_free_command(item);
}
dispatch_free_all(head);
if (!old_interactive)
variable_unset(VAR_NONINTERACTIVE);
else {
variable_set2(VAR_NONINTERACTIVE, old_interactive, 0);
free(old_interactive);
}
return result;
}
int
dispatch_load_file_int(int quiet)
{
FILE *fp;
char *cp;
int i;
qelement *list;
static const char *names[] = {
"install.cfg",
"/stand/install.cfg",
"/tmp/install.cfg",
NULL
};
fp = NULL;
cp = variable_get(VAR_CONFIG_FILE);
if (!cp) {
for (i = 0; names[i]; i++)
if ((fp = fopen(names[i], "r")) != NULL)
break;
} else
fp = fopen(cp, "r");
if (!fp) {
if (!quiet)
msgConfirm("Unable to open %s: %s", cp, strerror(errno));
return DITEM_FAILURE;
}
list = dispatch_load_fp(fp);
fclose(fp);
return dispatch_execute(list);
}
int
dispatch_load_file(dialogMenuItem *self)
{
return dispatch_load_file_int(FALSE);
}
int
dispatch_load_floppy(dialogMenuItem *self)
{
int what = DITEM_SUCCESS;
extern char *distWanted;
char *cp;
FILE *fp;
qelement *list;
mediaClose();
cp = variable_get_value(VAR_INSTALL_CFG,
"Specify the name of a configuration file\n"
"residing on a MSDOS or UFS floppy.", 0);
if (!cp || !*cp) {
variable_unset(VAR_INSTALL_CFG);
what |= DITEM_FAILURE;
return what;
}
distWanted = cp;
/* Try to open the floppy drive */
if (DITEM_STATUS(mediaSetFloppy(NULL)) == DITEM_FAILURE) {
msgConfirm("Unable to set media device to floppy.");
what |= DITEM_FAILURE;
mediaClose();
return what;
}
if (!DEVICE_INIT(mediaDevice)) {
msgConfirm("Unable to mount floppy filesystem.");
what |= DITEM_FAILURE;
mediaClose();
return what;
}
fp = DEVICE_GET(mediaDevice, cp, TRUE);
if (fp) {
list = dispatch_load_fp(fp);
fclose(fp);
mediaClose();
what |= dispatch_execute(list);
}
else {
if (!variable_get(VAR_NO_ERROR))
msgConfirm("Configuration file '%s' not found.", cp);
variable_unset(VAR_INSTALL_CFG);
what |= DITEM_FAILURE;
mediaClose();
}
return what;
}