1: /* popwrd.c - set password for a POP subscriber */
   2: 
   3: #include "../h/strings.h"
   4: #include "../zotnet/bboards.h"
   5: #include <errno.h>
   6: #include <pwd.h>
   7: #include <signal.h>
   8: #include <stdio.h>
   9: #include <sys/types.h>
  10: #include <sys/file.h>
  11: 
  12: 
  13: static char  temp[] = "ptmp";
  14: static char  home[BUFSIZ];
  15: 
  16: extern int errno;
  17: 
  18: char   *crypt (), *getpass (), *tail ();
  19: 
  20: #define compar(s,t) (strcmp (s, t) ? s : "")
  21: 
  22: /*  */
  23: 
  24: /* ARGSUSED */
  25: 
  26: main (argc, argv)
  27: int argc;
  28: char  **argv;
  29: {
  30:     int     i,
  31:             fd,
  32:             flags,
  33:             insist;
  34:     long    salt;
  35:     char    c,
  36:            *cp,
  37:             buffer[BUFSIZ],
  38:             saltc[2],
  39:           **ap;
  40:     struct bboard  *bb,
  41:                    *bp;
  42:     struct passwd  *pw;
  43:     FILE * fp;
  44: 
  45:     if ((pw = getpwnam (POPUID)) == NULL) {
  46:     fprintf (stderr, "no entry for ~%s.\n", POPUID);
  47:     exit (1);
  48:     }
  49:     if (chdir (strcpy (home, pw -> pw_dir)) < 0) {
  50:     fprintf (stderr, "no home directory for ~%s.\n", POPUID);
  51:     exit (1);
  52:     }
  53:     if (!setpwinfo (pw, POPDB, 0)) {
  54:     fprintf (stderr, "setbbinfo(%s, %s, 0) failed -- %s.\n",
  55:         pw -> pw_name, POPDB, getbberr ());
  56:     exit (1);
  57:     }
  58: 
  59:     if (argc != 2) {
  60:     fprintf (stderr, "usage: %s pop-subscriber\n", *argv);
  61:     exit (1);
  62:     }
  63:     if ((bb = getbbnam (argv[1])) == NULL
  64:         && (bb = getbbaka (argv[1])) == NULL) {
  65:     fprintf (stderr, "Permission denied.\n");
  66:     exit (1);
  67:     }
  68: 
  69:     if (!ldrbb (bb) && getuid () && !ldrchk (bb))
  70:     exit (1);
  71: 
  72:     if ((bp = getbbcpy (bb)) == NULL) {
  73:     fprintf (stderr, "getbbcpy loses.\n");
  74:     exit (1);
  75:     }
  76: 
  77:     (void) endbbent ();
  78: 
  79: #ifdef  lint
  80:     flags = 0;
  81: #endif	lint
  82:     for (insist = 0; insist < 2; insist++) {
  83:     if (insist)
  84:         printf ("Please use %s.\n",
  85:             flags == 1 ? "at least one non-numeric character"
  86:             : "a longer password");
  87: 
  88:     if ((i = strlen (strcpy (buffer, getpass ("New password:")))) == 0) {
  89:         fprintf (stderr, "Password unchanged.\n");
  90:         exit (1);
  91:     }
  92: 
  93:     flags = 0;
  94:     for (cp = buffer; c = *cp++;)
  95:         if (c >= 'a' && c <= 'z')
  96:         flags |= 2;
  97:         else
  98:         if (c >= 'A' && c <= 'Z')
  99:             flags |= 4;
 100:         else
 101:             if (c >= '0' && c <= '9')
 102:             flags |= 1;
 103:             else
 104:             flags |= 8;
 105: 
 106:     if ((flags >= 7 && i >= 4)
 107:         || ((flags == 2 || flags == 4) && i >= 6)
 108:         || ((flags == 3 || flags == 5 || flags == 6) && i >= 5))
 109:         break;
 110:     }
 111: 
 112:     if (strcmp (buffer, getpass ("Retype new password:"))) {
 113:     fprintf (stderr, "Mismatch - password unchanged.\n");
 114:     exit (1);
 115:     }
 116: 
 117:     (void) time (&salt);
 118:     salt ^= 9 * getpid ();
 119:     saltc[0] = salt & 077;
 120:     saltc[1] = (salt >> 6) & 077;
 121:     for (i = 0; i < 2; i++) {
 122:     c = saltc[i] + '.';
 123:     if (c > '9')
 124:         c += 7;
 125:     if (c > 'Z')
 126:         c += 6;
 127:     saltc[i] = c;
 128:     }
 129:     cp = crypt (buffer, saltc);
 130: 
 131:     (void) signal (SIGHUP, SIG_IGN);
 132:     (void) signal (SIGINT, SIG_IGN);
 133:     (void) signal (SIGQUIT, SIG_IGN);
 134: 
 135:     (void) umask (0);
 136:     if ((fd = open (temp, O_WRONLY | O_CREAT | O_EXCL, 0644)) < 0) {
 137:     switch (errno) {
 138:         case EEXIST:
 139:         fprintf (stderr, "POP file busy - try again later.\n");
 140:         break;
 141: 
 142:         default:
 143:         perror (temp);
 144:         break;
 145:     }
 146:     exit (1);
 147:     }
 148: 
 149:     (void) signal (SIGTSTP, SIG_IGN);
 150:     if ((fp = fdopen (fd, "w")) == NULL) {
 151:     fprintf (stderr, "fdopen loses.\n");
 152:     (void) unlink (temp);
 153:     exit (1);
 154:     }
 155: 
 156:     (void) setbbent (SB_STAY | SB_FAST);
 157:     while (bb = getbbent ()) {
 158:     if (strcmp (bb -> bb_name, bp -> bb_name) == 0)
 159:         bb -> bb_passwd = cp;
 160:     fprintf (fp, "%s:", bb -> bb_name);
 161:     if (ap = bb -> bb_aka)
 162:         for (; *ap; ap++)
 163:         fprintf (fp, "%s%s", ap != bb -> bb_aka ? "," : "", *ap);
 164:     fprintf (fp, ":%s:%s:", tail (bb -> bb_file), bb -> bb_passwd);
 165:     if ((ap = bb -> bb_leader) != NULL
 166:         && (strcmp (*ap, POPUID) != 0 || ap[1] != NULL))
 167:         for (; *ap; ap++)
 168:         fprintf (fp, "%s%s", ap != bb -> bb_leader ? "," : "", *ap);
 169:     fprintf (fp, ":%s:%s:%s:",
 170:         compar (bb -> bb_addr, bb -> bb_name),
 171:         compar (bb -> bb_request, POPUID),
 172:         bb -> bb_relay);
 173:     if (ap = bb -> bb_dist)
 174:         for (; *ap; ap++)
 175:         fprintf (fp, "%s%s", ap != bb -> bb_dist ? "," : "", *ap);
 176:     fprintf (fp, ":%o\n", bb -> bb_flags);
 177:     }
 178:     (void) endbbent ();
 179: 
 180:     if (rename (temp, POPDB) < 0) {
 181:     perror ("rename");
 182:     (void) unlink (temp);
 183:     exit (1);
 184:     }
 185:     (void) fclose (fp);
 186: 
 187:     exit (0);
 188: }
 189: 
 190: /*  */
 191: 
 192: char   *tail (s)
 193: char   *s;
 194: {
 195:     int     i;
 196:     char   *cp;
 197: 
 198:     if (strncmp (s, home, i = strlen (home)) == 0
 199:         && *(cp = s + i) == '/'
 200:         && *++cp)
 201:     return cp;
 202: 
 203:     return s;
 204: }

Defined functions

main defined in line 26; never used
tail defined in line 192; used 2 times

Defined variables

home defined in line 14; used 3 times
temp defined in line 13; used 5 times

Defined macros

compar defined in line 20; used 2 times
Last modified: 1986-04-21
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