mirror of
https://github.com/GnoConsortium/gno.git
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341 lines
8.8 KiB
C
341 lines
8.8 KiB
C
/* */
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/* newuser - add a new user to the system, v1.1 -- James Brookes */
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/* */
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/* Changes from 1.0 */
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/* */
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/* * Removed code to add "set $home/$user" stuff to new user's gshrc */
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/* file, per request of Phil Vandry. */
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/* * Added restriction that the new password entered must be greater */
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/* than four characters. */
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/* * Newuser will now try multiple times to open up the /etc/passwd */
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/* file, just as passwd itself does. */
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/* */
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/* Some code borrowed from Eric Shepard's passwd source. */
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/* */
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/* files: /var/adm/newuser/newid */
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/* /var/adm/newuser/newusers */
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/* /var/adm/newuser/gshrc */
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/* /user/ */
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/* */
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/*#pragma optimize -1 */
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#pragma stacksize 512
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <string.h>
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#include <signal.h>
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#include <sgtty.h>
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#include <gno/gno.h>
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#include <pwd.h>
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#include <unistd.h>
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#pragma lint -1
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char *getpass(char *prompt);
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char *crypt(char *key, char *salt);
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void time_out(void);
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void makesalt(char *salt, long seed);
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int get_next_uid(void);
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void getpassword(char *password, char *salt, char *passstring);
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int bad_name(char *acct_name);
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void myfgets(char *string, int maxchar, FILE *FilePtr);
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FILE *smartopen(char *file, char *mode);
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#define NEWID_FILE "/var/adm/newuser/newid"
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#define NEWUSERS_FILE "/var/adm/newuser/newusers"
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#define NEWGSHRC_FILE "/var/adm/newuser/gshrc"
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#define DEFAULT_GID 2 /* default group ID assigned to new user */
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#define ACCT_NAME_LEN 8 /* max # of chars in account name */
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#define REAL_NAME_LEN 30 /* max # of chars in real name */
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#define TERM_TYPE_LEN 8 /* max # of chars in terminal type */
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#define MAX_TRIES 3 /* max # of trials for opening passwd file */
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#ifndef FALSE
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#define FALSE 0
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#define TRUE 1
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#endif
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static char acct_name[ACCT_NAME_LEN+1],
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buffer[80],
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name[REAL_NAME_LEN+1],
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pass1[14], pass2[14],
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salt[3],
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scratch[256],
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term_type[TERM_TYPE_LEN+1];
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static unsigned char salttab[] = /* table of chars for salt */
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"./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
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void time_out(void)
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{
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printf("\nnewuser timed out after 60 seconds.\n");
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exit(1);
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}
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/* Borrowed from Eric's passwd.cc */
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void makesalt(char *salt, long seed)
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{
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int num = 2;
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while (--num >= 0)
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{
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*salt++ = salttab[seed&0x3f];
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seed >= 6;
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}
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}
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int get_next_uid(void)
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{
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FILE *FPtr;
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int uid;
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FPtr = fopen(NEWID_FILE,"r+");
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fscanf(FPtr,"%d\n",&uid);
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rewind(FPtr);
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fprintf(FPtr,"%d\n",uid+1);
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fclose(FPtr);
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return(uid);
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}
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void getpassword(char *password, char *salt, char *passstring)
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{
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char *pass, *passcode;
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pass = getpass(passstring);
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passcode = crypt(pass,salt);
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strcpy(password,passcode);
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}
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int bad_name(char *acct_name)
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{
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if (!isalpha(*acct_name++))
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return(TRUE);
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while (*acct_name != '\0')
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if (!isalnum(*acct_name++))
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return(TRUE);
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return(FALSE);
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}
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void myfgets(char *string, int maxchar, FILE *FilePtr)
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{
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int last_char;
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char *tmp_buf;
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tmp_buf = (char *) malloc (256);
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maxchar++;
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fgets(tmp_buf,maxchar,FilePtr);
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if (*tmp_buf == 0x00) /* ^D */
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exit(1);
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last_char = strlen(tmp_buf)-1;
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/* remove terminating \n if necessary */
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if ((tmp_buf[last_char] == '\n') || (tmp_buf[last_char] == '\r'))
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tmp_buf[last_char] = '\0';
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strcpy(string,tmp_buf);
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fflush(stdin);
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free(tmp_buf);
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}
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/* try multiple times to open /etc/passwd file */
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FILE *smartopen(char *file, char *mode)
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{
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FILE *FOutPtr;
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int i;
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for (i = 0; i < MAX_TRIES; i++)
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{
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FOutPtr = fopen(file,mode);
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if (FOutPtr == NULL)
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sleep(1);
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else
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break;
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}
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return(FOutPtr);
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}
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int main (int argc, char **argv)
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{
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int validate, uid;
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FILE *FInPtr, *FOutPtr;
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struct sgttyb *s;
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s = (struct sgttyb *) malloc (sizeof(struct sgttyb));
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signal(SIGINT,SIG_IGN);
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signal(SIGHUP,SIG_IGN);
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signal(SIGQUIT,SIG_IGN);
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signal(SIGTSTP,SIG_IGN);
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signal(SIGALRM,time_out);
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/* Set proper erase character */
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gtty(STDIN_FILENO,s);
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s->sg_erase = 0x7f;
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stty(STDIN_FILENO,s);
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free(s);
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validate = FALSE;
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if (argc == 2 && !strcmp(argv[1],"-v"))
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validate = TRUE;
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else if (argc == 1);
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else
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exit(1);
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/* Make sure all required files exist before going any further */
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if ((FInPtr = fopen(NEWID_FILE,"r+")) == NULL)
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{
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fprintf(stderr,"unable to open %s; exiting.\n",NEWID_FILE);
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exit(1);
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}
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fclose(FInPtr);
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if ((FInPtr = fopen(NEWGSHRC_FILE,"r+")) == NULL)
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{
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fprintf(stderr,"unable to open %s; exiting.\n",NEWGSHRC_FILE);
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exit(1);
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}
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fclose(FInPtr);
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/* Get information */
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printf("\nReal Name: ");
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myfgets(name,REAL_NAME_LEN,stdin);
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/* Get login name. If the login name is duplicate, prompt for */
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/* a new login name. If the login name would call for the */
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/* creation of a bogus directory, prompt for a new login name. */
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/* Note that I'm using the restrictions of the ProDOS FST, */
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/* since HFS is less restrictive. In other words, the username */
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/* must start with a character and may only contain letters */
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/* and numbers. */
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while(1)
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{
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printf("Login Name: ");
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myfgets(acct_name,ACCT_NAME_LEN,stdin);
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printf("\n\n(login name: '%s')\n\n",acct_name);
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if (getpwnam(acct_name) != NULL)
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printf("Duplicate username: please choose another.\n");
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else if (bad_name(acct_name))
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{
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printf("\n** Invalid username: please choose a name comprised of\n");
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printf(" alphanumeric characters which starts with an alphabetic\n");
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printf(" character.\n");
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}
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else
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break;
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}
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printf("Terminal Type: ");
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myfgets(term_type,TERM_TYPE_LEN,stdin);
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/* Get password of > 4 chars, with verification */
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makesalt(salt, rand());
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while(1)
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{
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getpassword(pass1,salt,"Password: ");
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getpassword(pass2,salt,"Verify: ");
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if (!strcmp(pass1,pass2) && (strlen(pass1) > 4))
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break;
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else
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printf("*** Failed verification.\n");
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}
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uid = get_next_uid(); /* get and update next free ID# */
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/* make home directory */
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sprintf(scratch,"mkdir -s /user/%s",acct_name);
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exec("/bin/mkdir",scratch);
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sleep(2);
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/* and copy default gshrc to it */
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sprintf(scratch,"/user/%s/gshrc",acct_name);
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FOutPtr = fopen(scratch,"w");
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FInPtr = fopen(NEWGSHRC_FILE,"r");
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while(fgets(buffer,80,FInPtr) != NULL)
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fputs(buffer,FOutPtr);
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fclose(FInPtr);
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/* update default gshrc to have correct $home, $user, and $term */
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/* Phil asked that this be removed, so... :)
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fprintf(FOutPtr,"set home=/user/%s\n",acct_name);
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fprintf(FOutPtr,"set user=%s\n",acct_name);
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*/
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fprintf(FOutPtr,"set term=%s\n",term_type);
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/*
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fprintf(FOutPtr,"export home user term\n");
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*/
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fprintf(FOutPtr,"export term\n");
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fclose(FOutPtr);
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if (!validate) /* no validation, so append new entry to /etc/passwd */
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{
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FOutPtr = smartopen("/etc/passwd","a");
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if (FOutPtr == NULL)
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{
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fprintf(stderr,"Trouble opening /etc/passwd file.\nExiting\n");
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exit(1);
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}
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fprintf(FOutPtr,"%s:%s:%d:%d:%s:/user/%s:/bin/gsh\n",acct_name,pass1,
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uid,DEFAULT_GID,name,acct_name);
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fclose(FOutPtr);
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printf("You may now log in.\n");
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}
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else /* validation selected -- so append new entry to NEWUSERS_FILE */
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{
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FOutPtr = fopen(NEWUSERS_FILE,"a");
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fprintf(FOutPtr,"%s:%s:%d:0:%s:/user/%s:/bin/gsh\n",acct_name,pass1,
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uid,name,acct_name);
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fclose(FOutPtr);
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printf("Try back in 24 hours.\n");
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}
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exit(0);
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}
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