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Annotation of src/lib/libwrap/misc.c, Revision 1.9.56.2

1.9.56.2! riz         1: /*     $NetBSD: misc.c,v 1.9.56.1 2012/04/23 16:48:53 riz Exp $        */
1.2       christos    2:
1.1       mrg         3:  /*
                      4:   * Misc routines that are used by tcpd and by tcpdchk.
1.6       simonb      5:   *
1.1       mrg         6:   * Author: Wietse Venema, Eindhoven University of Technology, The Netherlands.
                      7:   */
                      8:
1.2       christos    9: #include <sys/cdefs.h>
1.1       mrg        10: #ifndef lint
1.2       christos   11: #if 0
1.1       mrg        12: static char sccsic[] = "@(#) misc.c 1.2 96/02/11 17:01:29";
1.2       christos   13: #else
1.9.56.2! riz        14: __RCSID("$NetBSD: misc.c,v 1.9.56.1 2012/04/23 16:48:53 riz Exp $");
1.2       christos   15: #endif
1.1       mrg        16: #endif
                     17:
                     18: #include <sys/types.h>
                     19: #include <sys/param.h>
                     20: #include <netinet/in.h>
                     21: #include <arpa/inet.h>
                     22: #include <stdio.h>
                     23: #include <string.h>
                     24:
                     25: #include "tcpd.h"
                     26:
                     27: /* xgets - fgets() with backslash-newline stripping */
                     28:
1.9.56.2! riz        29: char   *xgets(ptr, len, fp)
        !            30: char   *ptr;
        !            31: int     len;
        !            32: FILE   *fp;
1.1       mrg        33: {
                     34:     int     got;
                     35:     char   *start = ptr;
                     36:
1.9       jdolecek   37:     while (len > 1 && fgets(ptr, len, fp)) {
1.1       mrg        38:        got = strlen(ptr);
                     39:        if (got >= 1 && ptr[got - 1] == '\n') {
                     40:            tcpd_context.line++;
                     41:            if (got >= 2 && ptr[got - 2] == '\\') {
                     42:                got -= 2;
                     43:            } else {
                     44:                return (start);
                     45:            }
                     46:        }
                     47:        ptr += got;
                     48:        len -= got;
                     49:        ptr[0] = 0;
                     50:     }
                     51:     return (ptr > start ? start : 0);
                     52: }
                     53:
                     54: /* split_at - break string at delimiter or return NULL */
                     55:
1.9.56.2! riz        56: char   *split_at(string, delimiter)
        !            57: char   *string;
        !            58: int     delimiter;
1.1       mrg        59: {
1.7       itojun     60:     char *cp;
                     61:     int bracket;
                     62:
                     63:     bracket = 0;
                     64:     for (cp = string; cp && *cp; cp++) {
                     65:        switch (*cp) {
                     66:        case '[':
                     67:            bracket++;
                     68:            break;
                     69:        case ']':
                     70:            bracket--;
                     71:            break;
                     72:        default:
                     73:            if (bracket == 0 && *cp == delimiter) {
                     74:                *cp++ = 0;
                     75:                return cp;
                     76:            }
                     77:            break;
                     78:        }
                     79:     }
                     80:     return NULL;
1.1       mrg        81: }
                     82:
                     83: /* dot_quad_addr - convert dotted quad to internal form */
                     84:
1.9.56.2! riz        85: int dot_quad_addr(str, addr)
        !            86: char   *str;
        !            87: unsigned long *addr;
1.1       mrg        88: {
1.3       christos   89:     struct in_addr a;
                     90:
                     91:     if (!inet_aton(str, &a))
                     92:        return -1;
1.4       christos   93:     if (addr)
                     94:        *addr = a.s_addr;
1.3       christos   95:     return 0;
1.1       mrg        96: }