/*
* Copyright 1988 by the Massachusetts Institute of Technology. For copying
- * and distribution information, see the file "mit-copyright.h".
+ * and distribution information, see the file "mit-copyright.h".
*
* $Source$
* $Header$
/*
* Talk to the MOIRA database to change a person's login shell. The chosen
- * shell must exist. A warning will be issued if the shell is not in
+ * shell must exist. A warning will be issued if the shell is not in
* /etc/shells.
- *
+ *
* chsh with no modifiers changes the shell of the user who is running
* the program.
- *
+ *
* If a commandline argument is given, it is taken to be the username
* of the user whose shell is to be changed.
*
*/
-#ifdef POSIX
#include <unistd.h>
-#endif
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
char *whoami;
char *getusershell();
-main(argc, argv)
- int argc;
- char *argv[];
+int main(int argc, char *argv[])
{
- char pname[ANAME_SZ];
- char *uname = pname;
- int k_errno;
+ char pname[ANAME_SZ];
+ char *uname = pname;
+ int k_errno;
- initialize_krb_error_table();
+ initialize_krb_error_table();
- if ((whoami = strrchr(argv[0], '/')) == NULL)
- whoami = argv[0];
- else
- whoami++;
+ if ((whoami = strrchr(argv[0], '/')) == NULL)
+ whoami = argv[0];
+ else
+ whoami++;
- if (argc > 2) {
- usage();
- }
-
- if (argc == 2)
- uname = argv[1];
- else
+ if (argc > 2)
+ usage();
+
+ if (argc == 2)
+ uname = argv[1];
+ else
{
- /* Do it right; get name from kerberos ticket file rather than
- from passord file. */
-
- if (k_errno = tf_init(TKT_FILE, R_TKT_FIL)) {
- com_err(whoami, k_errno, "reading ticket file");
- exit(1);
+ /* Do it right; get name from kerberos ticket file rather than
+ from passord file. */
+
+ if ((k_errno = tf_init(TKT_FILE, R_TKT_FIL)))
+ {
+ com_err(whoami, k_errno, "reading ticket file");
+ exit(1);
}
-
- if (k_errno = tf_get_pname(pname)) {
- com_err(whoami, k_errno, "getting kerberos principal name");
- exit(1);
+
+ if ((k_errno = tf_get_pname(pname)))
+ {
+ com_err(whoami, k_errno, "getting kerberos principal name");
+ exit(1);
}
- tf_close();
+ tf_close();
}
-
- exit(chsh(uname));
+
+ exit(chsh(uname));
}
-leave(status)
- int status;
- /* This should be called rather than exit once connection to moira server
- has been established. */
+/* This should be called rather than exit once connection to moira server
+ has been established. */
+int leave(int status)
{
- mr_disconnect();
- exit(status);
+ mr_disconnect();
+ exit(status);
}
-scream()
+int scream(void)
{
- com_err(whoami, 0, "Unexpected return value from Moira -- programmer botch");
- leave(1);
+ com_err(whoami, 0, "Unexpected return value from Moira -- programmer botch");
+ leave(1);
}
-chsh(uname)
- char *uname;
+int chsh(char *uname)
{
- int status; /* general purpose exit status */
- int q_argc; /* argc for mr_query */
- char *q_argv[U_END]; /* argv for mr_query */
- char *motd; /* determine MR server status */
-
- int got_one = 0; /* have we got a new shell yet? */
- char shell[BUFSIZ]; /* the new shell */
- int get_shell();
- void check_shell(); /* make sure new shell is valid */
-
- /* Try each query. If we ever fail, print error message and exit. */
-
- status = mr_connect(NULL);
- if (status) {
- com_err(whoami, status, " while connecting to Moira");
- exit(1);
+ int status; /* general purpose exit status */
+ int q_argc; /* argc for mr_query */
+ char *q_argv[U_END]; /* argv for mr_query */
+ char *motd; /* determine MR server status */
+
+ int got_one = 0; /* have we got a new shell yet? */
+ char shell[BUFSIZ]; /* the new shell */
+ int get_shell();
+ void check_shell(); /* make sure new shell is valid */
+
+ /* Try each query. If we ever fail, print error message and exit. */
+
+ status = mr_connect(NULL);
+ if (status)
+ {
+ com_err(whoami, status, " while connecting to Moira");
+ exit(1);
}
- status = mr_motd(&motd);
- if (status) {
- com_err(whoami, status, " unable to check server status");
- leave(1);
+ status = mr_motd(&motd);
+ if (status)
+ {
+ com_err(whoami, status, " unable to check server status");
+ leave(1);
}
- if (motd) {
- fprintf(stderr, "The Moira server is currently unavailable:\n%s\n", motd);
- leave(1);
+ if (motd)
+ {
+ fprintf(stderr, "The Moira server is currently unavailable:\n%s\n",
+ motd);
+ leave(1);
}
- status = mr_auth("chsh"); /* Don't use argv[0] - too easy to fake */
- if (status) {
- com_err(whoami, status,
- " while authenticating -- run \"kinit\" and try again.");
- leave(1);
+ status = mr_auth("chsh"); /* Don't use argv[0] - too easy to fake */
+ if (status)
+ {
+ com_err(whoami, status,
+ " while authenticating -- run \"kinit\" and try again.");
+ leave(1);
}
- /* First, do an access check */
+ /* First, do an access check */
- q_argv[USH_NAME] = uname;
- q_argv[USH_SHELL] = "junk";
- q_argc = USH_END;
+ q_argv[USH_NAME] = uname;
+ q_argv[USH_SHELL] = "junk";
+ q_argc = USH_END;
- if (status = mr_access("update_user_shell", q_argc, q_argv))
+ if ((status = mr_access("update_user_shell", q_argc, q_argv)))
{
- com_err(whoami, status, "; shell not\nchanged.");
- leave(2);
+ com_err(whoami, status, "; shell not\nchanged.");
+ leave(2);
}
- printf("Changing login shell for %s.\n", uname);
+ printf("Changing login shell for %s.\n", uname);
- /* Display current information */
+ /* Display current information */
- q_argv[NAME] = uname;
- q_argc = NAME + 1;
+ q_argv[NAME] = uname;
+ q_argc = NAME + 1;
- if ((status = mr_query("get_user_account_by_login", q_argc, q_argv,
- get_shell, (char *) uname)))
+ if ((status = mr_query("get_user_account_by_login", q_argc, q_argv,
+ get_shell, (char *) uname)))
{
- com_err(whoami, status, " while getting user information.");
- leave(2);
+ com_err(whoami, status, " while getting user information.");
+ leave(2);
}
- /* Ask for new shell */
- while (!got_one)
+ /* Ask for new shell */
+ while (!got_one)
{
- printf("New shell: ");
- if (fgets(shell, sizeof(shell), stdin) == NULL)
- leave(0);
- got_one = (strlen(shell) > 1);
+ printf("New shell: ");
+ if (!fgets(shell, sizeof(shell), stdin))
+ leave(0);
+ got_one = (strlen(shell) > 1);
}
- shell[strlen(shell) - 1] = 0; /* strip off newline */
+ shell[strlen(shell) - 1] = 0; /* strip off newline */
- /* Make sure we have a valid shell. This routine could exit */
- check_shell(shell);
+ /* Make sure we have a valid shell. This routine could exit */
+ check_shell(shell);
- /* Change shell */
+ /* Change shell */
- printf("Changing shell to %s...\n", shell);
+ printf("Changing shell to %s...\n", shell);
- q_argv[USH_NAME] = uname;
- q_argv[USH_SHELL] = shell;
- q_argc = USH_END;
- if (status = mr_query("update_user_shell", q_argc, q_argv,
- scream, (char *) NULL))
+ q_argv[USH_NAME] = uname;
+ q_argv[USH_SHELL] = shell;
+ q_argc = USH_END;
+ if ((status = mr_query("update_user_shell", q_argc, q_argv,
+ scream, NULL)))
{
- com_err(whoami, status, " while changing shell.");
- leave(2);
+ com_err(whoami, status, " while changing shell.");
+ leave(2);
}
- printf("Shell successfully changed.\n");
- mr_disconnect();
+ printf("Shell successfully changed.\n");
+ mr_disconnect();
- return(0);
+ return 0;
}
-get_shell(argc, argv, uname)
- int argc;
- char **argv;
- char *uname; /* for sanity checking */
+int get_shell(int argc, char **argv, char *uname)
{
- /* We'll just take the first information we get since login names
- cannot be duplicated in the database. */
-
- if (argc < U_END || strcmp(argv[U_NAME], uname))
+ /* We'll just take the first information we get since login names
+ cannot be duplicated in the database. */
+
+ if (argc < U_END || strcmp(argv[U_NAME], uname))
{
- fprintf(stderr, "Some internal error has occurred. Try again.\n");
- leave(3);
+ fprintf(stderr, "Some internal error has occurred. Try again.\n");
+ leave(3);
}
-
- printf("Account information last changed on %s\n", argv[U_MODTIME]);
- printf("by user %s with %s.\n", argv[U_MODBY], argv[U_MODWITH]);
- printf("Current shell for %s is %s.\n", uname, argv[U_SHELL]);
-
- return(MR_ABORT); /* Don't pay attention to other matches. */
+
+ printf("Account information last changed on %s\n", argv[U_MODTIME]);
+ printf("by user %s with %s.\n", argv[U_MODBY], argv[U_MODWITH]);
+ printf("Current shell for %s is %s.\n", uname, argv[U_SHELL]);
+
+ return MR_ABORT; /* Don't pay attention to other matches. */
}
-
-void check_shell(shell)
- char *shell;
+
+void check_shell(char *shell)
{
- char *valid_shell;
- int ok = 0;
+ char *valid_shell;
+ int ok = 0;
- while (valid_shell = getusershell()) {
- if (strcmp(shell, valid_shell) == 0) {
- ok = 1;
- break;
+ while ((valid_shell = getusershell()))
+ {
+ if (!strcmp(shell, valid_shell))
+ {
+ ok = 1;
+ break;
}
- else if (strcmp(shell, 1+strrchr(valid_shell, '/')) == 0) {
- ok = 1;
- (void) strcpy(shell, valid_shell);
- break;
+ else if (!strcmp(shell, 1 + strrchr(valid_shell, '/')))
+ {
+ ok = 1;
+ strcpy(shell, valid_shell);
+ break;
}
}
-
- if (!ok) {
- if (shell[0] != '/') {
- fprintf(stderr, "%s is not a standard shell. ", shell);
- fprintf(stderr, "You may choose to use a nonstandard\n");
- fprintf(stderr, "shell, but you must specify its complete ");
- fprintf(stderr, "path name.\n");
- leave(2);
+
+ if (!ok)
+ {
+ if (shell[0] != '/')
+ {
+ fprintf(stderr, "%s is not a standard shell. ", shell);
+ fprintf(stderr, "You may choose to use a nonstandard\n");
+ fprintf(stderr, "shell, but you must specify its complete ");
+ fprintf(stderr, "path name.\n");
+ leave(2);
}
- else if (access(shell, X_OK)) {
- fprintf(stderr, "%s is not available.\n", shell);
- leave(2);
+ else if (access(shell, X_OK))
+ {
+ fprintf(stderr, "%s is not available.\n", shell);
+ leave(2);
}
- else {
- printf("%s exists but is an unusual choice.\n", shell);
- printf("Try again if it is not what you wanted.\n");
+ else
+ {
+ printf("%s exists but is an unusual choice.\n", shell);
+ printf("Try again if it is not what you wanted.\n");
}
}
-}
+}
-usage()
+int usage(void)
{
- fprintf(stderr, "Usage: %s [user]\n", whoami);
- exit(1);
+ fprintf(stderr, "Usage: %s [user]\n", whoami);
+ exit(1);
}
-#if defined(ultrix) || defined(_AIX) || defined(sgi)
+#ifdef NEED_GETUSERSHELL
char *getusershell()
{
- static int count = 1;
+ static int count = 1;
- switch (count++) {
+ switch (count++)
+ {
case 1:
- return("/bin/sh");
+ return "/bin/sh";
case 2:
- return("/bin/csh");
+ return "/bin/csh";
case 3:
- return("/bin/athena/tcsh");
+ return "/bin/athena/tcsh";
case 4:
- return(NULL);
+ return NULL;
default:
- count = 1;
- return(getusershell());
+ count = 1;
+ return getusershell();
}
}
#endif
andersk / moira.git / blobdiff