crypto/dist/heimdal/appl/popper/pop_parse.c

   1 /*
   2  * Copyright (c) 1989 Regents of the University of California.
   3  * All rights reserved.  The Berkeley software License Agreement
   4  * specifies the terms and conditions for redistribution.
   5  */
   6
   7 #include <popper.h>
   8 __RCSID("$Heimdal: pop_parse.c 5530 1999-03-13 21:17:27Z assar $"
   9         "$NetBSD$");
  10
  11 /*
  12  *  parse:  Parse a raw input line from a POP client
  13  *  into null-delimited tokens
  14  */
  15
  16 int
  17 pop_parse(POP *p, char *buf)
  18 {
  19     char            *   mp;
  20     int        i;
  21
  22     /*  Loop through the POP command array */
  23     for (mp = buf, i = 0; ; i++) {
  24
  25         /*  Skip leading spaces and tabs in the message */
  26         while (isspace((unsigned char)*mp))mp++;
  27
  28         /*  Are we at the end of the message? */
  29         if (*mp == 0) break;
  30
  31         /*  Have we already obtained the maximum allowable parameters? */
  32         if (i >= MAXPARMCOUNT) {
  33             pop_msg(p,POP_FAILURE,"Too many arguments supplied.");
  34             return(-1);
  35         }
  36
  37         /*  Point to the start of the token */
  38         p->pop_parm[i] = mp;
  39
  40         /*  Search for the first space character (end of the token) */
  41         while (!isspace((unsigned char)*mp) && *mp) mp++;
  42
  43         /*  Delimit the token with a null */
  44         if (*mp) *mp++ = 0;
  45     }
  46
  47     /*  Were any parameters passed at all? */
  48     if (i == 0) return (-1);
  49
  50     /*  Convert the first token (POP command) to lower case */
  51     strlwr(p->pop_command);
  52
  53     /*  Return the number of tokens extracted minus the command itself */
  54     return (i-1);
  55
  56 }