Changeset 1770 in MondoRescue for branches/stable/mindi-busybox/networking/hostname.c
- Timestamp:
- Nov 6, 2007, 11:01:53 AM (16 years ago)
- File:
-
- 1 edited
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branches/stable/mindi-busybox/networking/hostname.c
r821 r1770 1 1 /* vi: set sw=4 ts=4: */ 2 2 /* 3 * $Id: hostname.c,v 1.36 2003/07/14 21:21:01 andersen Exp $4 3 * Mini hostname implementation for busybox 5 4 * … … 9 8 * use of long options and GNU getopt. Improved the usage info. 10 9 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2 of the License, or 14 * (at your option) any later version. 10 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 15 11 * 16 * This program is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 12 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. 24 13 */ 25 14 26 #include <errno.h> 27 #include <arpa/inet.h> 28 #include <netdb.h> 29 #include <unistd.h> 30 #include <string.h> 31 #include <stdio.h> 32 #include <stdlib.h> 33 #include <getopt.h> 34 #include "busybox.h" 35 36 extern char *optarg; /* in unistd.h */ 37 extern int optind, opterr, optopt; /* in unistd.h */ 15 #include "libbb.h" 38 16 39 17 static void do_sethostname(char *s, int isfile) 40 18 { 41 19 FILE *f; 42 char buf[255];43 20 44 21 if (!s) … … 47 24 if (sethostname(s, strlen(s)) < 0) { 48 25 if (errno == EPERM) 49 bb_error_msg_and_die( "you must be root to change the hostname");26 bb_error_msg_and_die(bb_msg_perm_denied_are_you_root); 50 27 else 51 28 bb_perror_msg_and_die("sethostname"); 52 29 } 53 30 } else { 54 f = bb_xfopen(s, "r"); 55 while (fgets(buf, 255, f) != NULL) { 56 if (buf[0] =='#') { 31 f = xfopen(s, "r"); 32 #define strbuf bb_common_bufsiz1 33 while (fgets(strbuf, sizeof(strbuf), f) != NULL) { 34 if (strbuf[0] == '#') { 57 35 continue; 58 36 } 59 chomp( buf);60 do_sethostname( buf, 0);37 chomp(strbuf); 38 do_sethostname(strbuf, 0); 61 39 } 62 #ifdef CONFIG_FEATURE_CLEAN_UP 63 fclose(f); 64 #endif 40 if (ENABLE_FEATURE_CLEAN_UP) 41 fclose(f); 65 42 } 66 43 } 67 44 45 int hostname_main(int argc, char **argv); 68 46 int hostname_main(int argc, char **argv) 69 47 { 70 int opt; 71 int type = 0; 72 struct hostent *hp; 73 char *filename = NULL; 74 char buf[255]; 75 char *p = NULL; 48 enum { 49 OPT_d = 0x1, 50 OPT_f = 0x2, 51 OPT_i = 0x4, 52 OPT_s = 0x8, 53 OPT_F = 0x10, 54 OPT_dfis = 0xf, 55 }; 56 57 char buf[256]; 58 char *hostname_str; 76 59 77 60 if (argc < 1) 78 61 bb_show_usage(); 79 62 80 while ((opt = getopt(argc, argv, "dfisF:")) > 0) { 81 switch (opt) { 82 case 'd': 83 case 'f': 84 case 'i': 85 case 's': 86 type = opt; 87 break; 88 case 'F': 89 filename = optarg; 90 break; 91 default: 92 bb_show_usage(); 93 } 94 } 63 getopt32(argv, "dfisF:", &hostname_str); 95 64 96 65 /* Output in desired format */ 97 if (type != 0) { 98 gethostname(buf, 255); 66 if (option_mask32 & OPT_dfis) { 67 struct hostent *hp; 68 char *p; 69 gethostname(buf, sizeof(buf)); 99 70 hp = xgethostbyname(buf); 100 71 p = strchr(hp->h_name, '.'); 101 if ( type == 'f') {72 if (option_mask32 & OPT_f) { 102 73 puts(hp->h_name); 103 } else if ( type == 's') {74 } else if (option_mask32 & OPT_s) { 104 75 if (p != NULL) { 105 *p = 0;76 *p = '\0'; 106 77 } 107 78 puts(hp->h_name); 108 } else if (type == 'd') { 109 if (p) puts(p + 1); 110 } else if (type == 'i') { 79 } else if (option_mask32 & OPT_d) { 80 if (p) 81 puts(p + 1); 82 } else if (option_mask32 & OPT_i) { 111 83 while (hp->h_addr_list[0]) { 112 84 printf("%s ", inet_ntoa(*(struct in_addr *) (*hp->h_addr_list++))); 113 85 } 114 p rintf("\n");86 puts(""); 115 87 } 116 88 } 117 89 /* Set the hostname */ 118 else if ( filename != NULL) {119 do_sethostname( filename, 1);90 else if (option_mask32 & OPT_F) { 91 do_sethostname(hostname_str, 1); 120 92 } else if (optind < argc) { 121 93 do_sethostname(argv[optind], 0); … … 123 95 /* Or if all else fails, 124 96 * just print the current hostname */ 125 126 gethostname(buf, 255);97 else { 98 gethostname(buf, sizeof(buf)); 127 99 puts(buf); 128 100 } 129 return (0);101 return 0; 130 102 }
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