diff options
| -rw-r--r-- | networking/hostname.c | 114 |
1 files changed, 58 insertions, 56 deletions
diff --git a/networking/hostname.c b/networking/hostname.c index 7a26c1b..16de86a 100644 --- a/networking/hostname.c +++ b/networking/hostname.c @@ -1,6 +1,6 @@ /* vi: set sw=4 ts=4: */ /* - * $Id: hostname.c,v 1.31 2001/10/24 04:59:56 andersen Exp $ + * $Id: hostname.c,v 1.32 2001/10/31 09:59:57 andersen Exp $ * Mini hostname implementation for busybox * * Copyright (C) 1999 by Randolph Chung <tausq@debian.org> @@ -30,8 +30,12 @@ #include <string.h> #include <stdio.h> #include <stdlib.h> +#include <getopt.h> #include "busybox.h" +extern char *optarg; /* in unistd.h */ +extern int optind, opterr, optopt; /* in unistd.h */ + static void do_sethostname(char *s, int isfile) { FILE *f; @@ -48,81 +52,79 @@ static void do_sethostname(char *s, int isfile) } } else { f = xfopen(s, "r"); - fgets(buf, 255, f); + while (fgets(buf, 255, f) != NULL) { + if (buf[0] =='#') { + continue; + } + chomp(buf); + do_sethostname(buf, 0); + } #ifdef CONFIG_FEATURE_CLEAN_UP fclose(f); #endif - chomp(buf); - do_sethostname(buf, 0); } } int hostname_main(int argc, char **argv) { - int opt_short = 0; - int opt_domain = 0; - int opt_ip = 0; - struct hostent *h; + int opt; + int type = 0; + struct hostent *hp; char *filename = NULL; char buf[255]; - char *s = NULL; + char *p = NULL; if (argc < 1) show_usage(); - while (--argc > 0 && **(++argv) == '-') { - while (*(++(*argv))) { - switch (**argv) { - case 's': - opt_short = 1; - break; - case 'i': - opt_ip = 1; - break; - case 'd': - opt_domain = 1; - break; - case 'F': - if (--argc == 0) { - show_usage(); - } - filename = *(++argv); - break; - case '-': - if (strcmp(++(*argv), "file") || --argc ==0 ) { - show_usage(); - } - filename = *(++argv); - break; - default: - show_usage(); - } - if (filename != NULL) - break; + while ((opt = getopt(argc, argv, "dfisF:")) > 0) { + switch (opt) { + case 'd': + case 'f': + case 'i': + case 's': + type = opt; + break; + case 'F': + filename = optarg; + break; + default: + show_usage(); } } - if (argc >= 1) { - do_sethostname(*argv, 0); - } else if (filename != NULL) { - do_sethostname(filename, 1); - } else { + /* Output in desired format */ + if (type != 0) { gethostname(buf, 255); - if (opt_short) { - s = strchr(buf, '.'); - if (!s) - s = buf; - *s = 0; - puts(buf); - } else if (opt_domain) { - s = strchr(buf, '.'); - puts(s ? s + 1 : ""); - } else if (opt_ip) { - h = xgethostbyname(buf); - puts(inet_ntoa(*(struct in_addr *) (h->h_addr))); - } else { + hp = xgethostbyname(buf); + p = strchr(hp->h_name, '.'); + if (type == 'f') { + puts(hp->h_name); + } else if (type == 's') { + if (p != NULL) { + *p = 0; + } puts(buf); + } else if (type == 'd') { + puts(p ? p + 1 : ""); + } else if (type == 'i') { + while (hp->h_addr_list[0]) { + printf("%s ", inet_ntoa(*(struct in_addr *) (*hp->h_addr_list++))); + } + printf("\n"); } } + /* Set the hostname */ + else if (filename != NULL) { + do_sethostname(filename, 1); + } else if (optind < argc) { + do_sethostname(argv[optind], 0); + } + /* Or if all else fails, + * just print the current hostname */ + else { + gethostname(buf, 255); + puts(buf); + } return(0); } |