| 1 | /*
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| 2 | Mount helper utility for Linux CIFS VFS (virtual filesystem) client
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| 3 | Copyright (C) 2003 Steve French (sfrench@us.ibm.com)
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| 4 |
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| 5 | This program is free software; you can redistribute it and/or modify
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| 6 | it under the terms of the GNU General Public License as published by
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| 7 | the Free Software Foundation; either version 2 of the License, or
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| 8 | (at your option) any later version.
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| 9 |
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| 10 | This program is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU General Public License for more details.
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| 14 |
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| 15 | You should have received a copy of the GNU General Public License
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| 16 | along with this program; if not, write to the Free Software
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| 17 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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| 18 |
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| 19 | #ifndef _GNU_SOURCE
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| 20 | #define _GNU_SOURCE
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| 21 | #endif
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| 22 |
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| 23 | #include <stdlib.h>
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| 24 | #include <stdio.h>
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| 25 | #include <unistd.h>
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| 26 | #include <pwd.h>
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| 27 | #include <sys/types.h>
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| 28 | #include <sys/mount.h>
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| 29 | #include <sys/stat.h>
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| 30 | #include <sys/utsname.h>
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| 31 | #include <sys/socket.h>
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| 32 | #include <arpa/inet.h>
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| 33 | #include <getopt.h>
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| 34 | #include <errno.h>
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| 35 | #include <netdb.h>
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| 36 | #include <string.h>
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| 37 | #include <mntent.h>
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| 38 | #include <fcntl.h>
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| 39 |
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| 40 | #define MOUNT_CIFS_VERSION_MAJOR "1"
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| 41 | #define MOUNT_CIFS_VERSION_MINOR "5"
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| 42 |
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| 43 | #ifndef MOUNT_CIFS_VENDOR_SUFFIX
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| 44 | #define MOUNT_CIFS_VENDOR_SUFFIX ""
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| 45 | #endif
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| 46 |
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| 47 | #ifndef MS_MOVE
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| 48 | #define MS_MOVE 8192
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| 49 | #endif
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| 50 |
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| 51 | char * thisprogram;
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| 52 | int verboseflag = 0;
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| 53 | static int got_password = 0;
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| 54 | static int got_user = 0;
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| 55 | static int got_domain = 0;
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| 56 | static int got_ip = 0;
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| 57 | static int got_unc = 0;
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| 58 | static int got_uid = 0;
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| 59 | static int got_gid = 0;
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| 60 | static int free_share_name = 0;
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| 61 | static char * user_name = NULL;
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| 62 | char * mountpassword = NULL;
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| 63 |
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| 64 |
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| 65 | /* BB finish BB
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| 66 |
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| 67 | cifs_umount
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| 68 | open nofollow - avoid symlink exposure?
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| 69 | get owner of dir see if matches self or if root
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| 70 | call system(umount argv) etc.
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| 71 |
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| 72 | BB end finish BB */
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| 73 |
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| 74 | static void mount_cifs_usage(void)
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| 75 | {
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| 76 | printf("\nUsage: %s <remotetarget> <dir> -o <options>\n", thisprogram);
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| 77 | printf("\nMount the remote target, specified as a UNC name,");
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| 78 | printf(" to a local directory.\n\nOptions:\n");
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| 79 | printf("\tuser=<arg>\n\tpass=<arg>\n\tdom=<arg>\n");
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| 80 | printf("\nLess commonly used options:");
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| 81 | printf("\n\tcredentials=<filename>,guest,perm,noperm,setuids,nosetuids,\n\trw,ro,sep=<char>,iocharset=<codepage>,suid,nosuid,exec,noexec");
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| 82 | printf("\n\nOptions not needed for servers supporting CIFS Unix extensions (e.g. most Samba versions):");
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| 83 | printf("\n\tuid=<uid>,gid=<gid>,dir_mode=<mode>,file_mode=<mode>");
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| 84 | printf("\n\nRarely used options:");
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| 85 | printf("\n\tport=<tcpport>,rsize=<size>,wsize=<size>,unc=<unc_name>,ip=<ip_address>,dev,nodev");
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| 86 | printf("\n\nOptions are described in more detail in the manual page");
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| 87 | printf("\n\tman 8 mount.cifs\n");
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| 88 | printf("\nTo display the version number of the mount helper:");
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| 89 | printf("\n\t%s -V\n",thisprogram);
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| 90 |
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| 91 | if(mountpassword) {
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| 92 | memset(mountpassword,0,64);
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| 93 | free(mountpassword);
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| 94 | }
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| 95 | exit(1);
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| 96 | }
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| 97 |
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| 98 | /* caller frees username if necessary */
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| 99 | static char * getusername(void) {
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| 100 | char *username = NULL;
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| 101 | struct passwd *password = getpwuid(getuid());
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| 102 |
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| 103 | if (password) {
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| 104 | username = password->pw_name;
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| 105 | }
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| 106 | return username;
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| 107 | }
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| 108 |
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| 109 | char * parse_cifs_url(char * unc_name)
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| 110 | {
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| 111 | printf("\nMounting cifs URL not implemented yet. Attempt to mount %s\n",unc_name);
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| 112 | return NULL;
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| 113 | }
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| 114 |
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| 115 | static int open_cred_file(char * file_name)
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| 116 | {
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| 117 | char * line_buf;
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| 118 | char * temp_val;
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| 119 | FILE * fs;
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| 120 | int i, length;
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| 121 | fs = fopen(file_name,"r");
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| 122 | if(fs == NULL)
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| 123 | return errno;
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| 124 | line_buf = malloc(4096);
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| 125 | if(line_buf == NULL)
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| 126 | return -ENOMEM;
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| 127 |
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| 128 | while(fgets(line_buf,4096,fs)) {
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| 129 | /* parse line from credential file */
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| 130 |
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| 131 | /* eat leading white space */
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| 132 | for(i=0;i<4086;i++) {
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| 133 | if((line_buf[i] != ' ') && (line_buf[i] != '\t'))
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| 134 | break;
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| 135 | /* if whitespace - skip past it */
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| 136 | }
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| 137 | if (strncasecmp("username",line_buf+i,8) == 0) {
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| 138 | temp_val = strchr(line_buf + i,'=');
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| 139 | if(temp_val) {
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| 140 | /* go past equals sign */
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| 141 | temp_val++;
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| 142 | for(length = 0;length<4087;length++) {
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| 143 | if(temp_val[length] == '\n')
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| 144 | break;
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| 145 | }
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| 146 | if(length > 4086) {
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| 147 | printf("mount.cifs failed due to malformed username in credentials file");
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| 148 | memset(line_buf,0,4096);
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| 149 | if(mountpassword) {
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| 150 | memset(mountpassword,0,64);
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| 151 | }
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| 152 | exit(1);
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| 153 | } else {
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| 154 | got_user = 1;
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| 155 | user_name = calloc(1 + length,1);
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| 156 | /* BB adding free of user_name string before exit,
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| 157 | not really necessary but would be cleaner */
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| 158 | strncpy(user_name,temp_val, length);
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| 159 | }
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| 160 | }
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| 161 | } else if (strncasecmp("password",line_buf+i,8) == 0) {
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| 162 | temp_val = strchr(line_buf+i,'=');
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| 163 | if(temp_val) {
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| 164 | /* go past equals sign */
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| 165 | temp_val++;
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| 166 | for(length = 0;length<65;length++) {
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| 167 | if(temp_val[length] == '\n')
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| 168 | break;
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| 169 | }
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| 170 | if(length > 64) {
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| 171 | printf("mount.cifs failed: password in credentials file too long\n");
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| 172 | memset(line_buf,0, 4096);
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| 173 | if(mountpassword) {
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| 174 | memset(mountpassword,0,64);
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| 175 | }
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| 176 | exit(1);
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| 177 | } else {
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| 178 | if(mountpassword == NULL) {
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| 179 | mountpassword = calloc(65,1);
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| 180 | } else
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| 181 | memset(mountpassword,0,64);
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| 182 | if(mountpassword) {
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| 183 | /* BB add handling for commas in password here */
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| 184 | strncpy(mountpassword,temp_val,length);
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| 185 | got_password = 1;
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| 186 | }
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| 187 | }
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| 188 | }
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| 189 | }
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| 190 | }
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| 191 | fclose(fs);
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| 192 | if(line_buf) {
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| 193 | memset(line_buf,0,4096);
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| 194 | free(line_buf);
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| 195 | }
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| 196 | return 0;
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| 197 | }
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| 198 |
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| 199 | static int get_password_from_file(int file_descript, char * filename)
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| 200 | {
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| 201 | int rc = 0;
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| 202 | int i;
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| 203 | char c;
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| 204 |
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| 205 | if(mountpassword == NULL)
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| 206 | mountpassword = calloc(65,1);
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| 207 | else
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| 208 | memset(mountpassword, 0, 64);
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| 209 |
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| 210 | if(filename != NULL) {
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| 211 | file_descript = open(filename, O_RDONLY);
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| 212 | if(file_descript < 0) {
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| 213 | printf("mount.cifs failed. %s attempting to open password file %s\n",
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| 214 | strerror(errno),filename);
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| 215 | exit(1);
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| 216 | }
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| 217 | }
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| 218 | /* else file already open and fd provided */
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| 219 |
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| 220 | for(i=0;i<64;i++) {
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| 221 | rc = read(file_descript,&c,1);
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| 222 | if(rc < 0) {
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| 223 | printf("mount.cifs failed. Error %s reading password file\n",strerror(errno));
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| 224 | memset(mountpassword,0,64);
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| 225 | if(filename != NULL)
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| 226 | close(file_descript);
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| 227 | exit(1);
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| 228 | } else if(rc == 0) {
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| 229 | if(mountpassword[0] == 0) {
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| 230 | if(verboseflag)
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| 231 | printf("\nWarning: null password used since cifs password file empty");
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| 232 | }
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| 233 | break;
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| 234 | } else /* read valid character */ {
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| 235 | if((c == 0) || (c == '\n')) {
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| 236 | break;
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| 237 | } else
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| 238 | mountpassword[i] = c;
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| 239 | }
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| 240 | }
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| 241 | if((i == 64) && (verboseflag)) {
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| 242 | printf("\nWarning: password longer than 64 characters specified in cifs password file");
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| 243 | }
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| 244 | got_password = 1;
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| 245 | if(filename != NULL) {
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| 246 | close(file_descript);
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| 247 | }
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| 248 |
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| 249 | return rc;
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| 250 | }
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| 251 |
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| 252 | static int parse_options(char * options, int * filesys_flags)
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| 253 | {
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| 254 | char * data;
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| 255 | char * percent_char = NULL;
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| 256 | char * value = NULL;
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| 257 | char * next_keyword = NULL;
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| 258 | int rc = 0;
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| 259 |
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| 260 | if (!options)
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| 261 | return 1;
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| 262 | else
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| 263 | data = options;
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| 264 |
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| 265 | if(verboseflag)
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| 266 | printf("\n parsing options: %s", options);
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| 267 |
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| 268 | /* while ((data = strsep(&options, ",")) != NULL) { */
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| 269 | while(data != NULL) {
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| 270 | /* check if ends with trailing comma */
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| 271 | if(*data == 0)
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| 272 | break;
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| 273 |
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| 274 | /* format is keyword=value,keyword2=value2,keyword3=value3 etc.) */
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| 275 | /* data = next keyword */
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| 276 | /* value = next value ie stuff after equal sign */
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| 277 |
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| 278 | next_keyword = strchr(data,',');
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| 279 |
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| 280 | /* temporarily null terminate end of keyword=value pair */
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| 281 | if(next_keyword)
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| 282 | *next_keyword = 0;
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| 283 |
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| 284 | /* if (!*data)
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| 285 | continue; */
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| 286 |
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| 287 | /* temporarily null terminate keyword to make keyword and value distinct */
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| 288 | if ((value = strchr(data, '=')) != NULL) {
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| 289 | *value = '\0';
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| 290 | value++;
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| 291 | }
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| 292 |
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| 293 | if (strncmp(data, "user", 4) == 0) {
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| 294 | if (!value || !*value) {
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| 295 | if(data[4] == '\0') {
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| 296 | if(verboseflag)
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| 297 | printf("\nskipping empty user mount parameter\n");
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| 298 | /* remove the parm since it would otherwise be confusing
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| 299 | to the kernel code which would think it was a real username */
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| 300 | data[0] = ',';
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| 301 | data[1] = ',';
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| 302 | data[2] = ',';
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| 303 | data[3] = ',';
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| 304 | /* BB remove it from mount line so as not to confuse kernel code */
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| 305 | } else {
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| 306 | printf("username specified with no parameter\n");
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| 307 | return 1; /* needs_arg; */
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| 308 | }
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| 309 | } else {
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| 310 | if (strnlen(value, 260) < 260) {
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| 311 | got_user=1;
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| 312 | percent_char = strchr(value,'%');
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| 313 | if(percent_char) {
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| 314 | *percent_char = ',';
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| 315 | if(mountpassword == NULL)
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| 316 | mountpassword = calloc(65,1);
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| 317 | if(mountpassword) {
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| 318 | if(got_password)
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| 319 | printf("\nmount.cifs warning - password specified twice\n");
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| 320 | got_password = 1;
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| 321 | percent_char++;
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| 322 | strncpy(mountpassword, percent_char,64);
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| 323 | /* remove password from username */
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| 324 | while(*percent_char != 0) {
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| 325 | *percent_char = ',';
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| 326 | percent_char++;
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| 327 | }
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| 328 | }
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| 329 | }
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| 330 | } else {
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| 331 | printf("username too long\n");
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| 332 | return 1;
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| 333 | }
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| 334 | }
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| 335 | } else if (strncmp(data, "pass", 4) == 0) {
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| 336 | if (!value || !*value) {
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| 337 | if(got_password) {
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| 338 | printf("\npassword specified twice, ignoring second\n");
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| 339 | } else
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| 340 | got_password = 1;
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| 341 | } else if (strnlen(value, 17) < 17) {
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| 342 | if(got_password)
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| 343 | printf("\nmount.cifs warning - password specified twice\n");
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| 344 | got_password = 1;
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| 345 | } else {
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| 346 | printf("password too long\n");
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| 347 | return 1;
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| 348 | }
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| 349 | } else if (strncmp(data, "ip", 2) == 0) {
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| 350 | if (!value || !*value) {
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| 351 | printf("target ip address argument missing");
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| 352 | } else if (strnlen(value, 35) < 35) {
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| 353 | if(verboseflag)
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| 354 | printf("ip address %s override specified\n",value);
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| 355 | got_ip = 1;
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| 356 | } else {
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| 357 | printf("ip address too long\n");
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| 358 | return 1;
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| 359 | }
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| 360 | } else if ((strncmp(data, "unc", 3) == 0)
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| 361 | || (strncmp(data, "target", 6) == 0)
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| 362 | || (strncmp(data, "path", 4) == 0)) {
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| 363 | if (!value || !*value) {
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| 364 | printf("invalid path to network resource\n");
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| 365 | return 1; /* needs_arg; */
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| 366 | } else if(strnlen(value,5) < 5) {
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| 367 | printf("UNC name too short");
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| 368 | }
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| 369 |
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| 370 | if (strnlen(value, 300) < 300) {
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| 371 | got_unc = 1;
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| 372 | if (strncmp(value, "//", 2) == 0) {
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| 373 | if(got_unc)
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| 374 | printf("unc name specified twice, ignoring second\n");
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| 375 | else
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| 376 | got_unc = 1;
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| 377 | } else if (strncmp(value, "\\\\", 2) != 0) {
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| 378 | printf("UNC Path does not begin with // or \\\\ \n");
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| 379 | return 1;
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| 380 | } else {
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| 381 | if(got_unc)
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| 382 | printf("unc name specified twice, ignoring second\n");
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| 383 | else
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| 384 | got_unc = 1;
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| 385 | }
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| 386 | } else {
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| 387 | printf("CIFS: UNC name too long\n");
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| 388 | return 1;
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| 389 | }
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| 390 | } else if ((strncmp(data, "domain", 3) == 0)
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| 391 | || (strncmp(data, "workgroup", 5) == 0)) {
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| 392 | if (!value || !*value) {
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| 393 | printf("CIFS: invalid domain name\n");
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| 394 | return 1; /* needs_arg; */
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| 395 | }
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| 396 | if (strnlen(value, 65) < 65) {
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| 397 | got_domain = 1;
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| 398 | } else {
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| 399 | printf("domain name too long\n");
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| 400 | return 1;
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| 401 | }
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| 402 | } else if (strncmp(data, "cred", 4) == 0) {
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| 403 | if (value && *value) {
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| 404 | rc = open_cred_file(value);
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| 405 | if(rc) {
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| 406 | printf("error %d opening credential file %s\n",rc, value);
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| 407 | return 1;
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| 408 | }
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| 409 | } else {
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| 410 | printf("invalid credential file name specified\n");
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| 411 | return 1;
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| 412 | }
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| 413 | } else if (strncmp(data, "uid", 3) == 0) {
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| 414 | if (value && *value) {
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| 415 | got_uid = 1;
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| 416 | }
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| 417 | } else if (strncmp(data, "gid", 3) == 0) {
|
|---|
| 418 | if (value && *value) {
|
|---|
| 419 | got_gid = 1;
|
|---|
| 420 | }
|
|---|
| 421 | /* fmask and dmask synonyms for people used to smbfs syntax */
|
|---|
| 422 | } else if (strcmp(data, "file_mode") == 0 || strcmp(data, "fmask")==0) {
|
|---|
| 423 | if (!value || !*value) {
|
|---|
| 424 | printf ("Option '%s' requires a numerical argument\n", data);
|
|---|
| 425 | return 1;
|
|---|
| 426 | }
|
|---|
| 427 |
|
|---|
| 428 | if (value[0] != '0') {
|
|---|
| 429 | printf ("WARNING: '%s' not expressed in octal.\n", data);
|
|---|
| 430 | }
|
|---|
| 431 |
|
|---|
| 432 | if (strcmp (data, "fmask") == 0) {
|
|---|
| 433 | printf ("WARNING: CIFS mount option 'fmask' is deprecated. Use 'file_mode' instead.\n");
|
|---|
| 434 | data = "file_mode"; /* BB fix this */
|
|---|
| 435 | }
|
|---|
| 436 | } else if (strcmp(data, "dir_mode") == 0 || strcmp(data, "dmask")==0) {
|
|---|
| 437 | if (!value || !*value) {
|
|---|
| 438 | printf ("Option '%s' requires a numerical argument\n", data);
|
|---|
| 439 | return 1;
|
|---|
| 440 | }
|
|---|
| 441 |
|
|---|
| 442 | if (value[0] != '0') {
|
|---|
| 443 | printf ("WARNING: '%s' not expressed in octal.\n", data);
|
|---|
| 444 | }
|
|---|
| 445 |
|
|---|
| 446 | if (strcmp (data, "dmask") == 0) {
|
|---|
| 447 | printf ("WARNING: CIFS mount option 'dmask' is deprecated. Use 'dir_mode' instead.\n");
|
|---|
| 448 | data = "dir_mode";
|
|---|
| 449 | }
|
|---|
| 450 | /* the following eight mount options should be
|
|---|
| 451 | stripped out from what is passed into the kernel
|
|---|
| 452 | since these eight options are best passed as the
|
|---|
| 453 | mount flags rather than redundantly to the kernel
|
|---|
| 454 | and could generate spurious warnings depending on the
|
|---|
| 455 | level of the corresponding cifs vfs kernel code */
|
|---|
| 456 | } else if (strncmp(data, "nosuid", 6) == 0) {
|
|---|
| 457 | *filesys_flags |= MS_NOSUID;
|
|---|
| 458 | } else if (strncmp(data, "suid", 4) == 0) {
|
|---|
| 459 | *filesys_flags &= ~MS_NOSUID;
|
|---|
| 460 | } else if (strncmp(data, "nodev", 5) == 0) {
|
|---|
| 461 | *filesys_flags |= MS_NODEV;
|
|---|
| 462 | } else if (strncmp(data, "dev", 3) == 0) {
|
|---|
| 463 | *filesys_flags &= ~MS_NODEV;
|
|---|
| 464 | } else if (strncmp(data, "noexec", 6) == 0) {
|
|---|
| 465 | *filesys_flags |= MS_NOEXEC;
|
|---|
| 466 | } else if (strncmp(data, "exec", 4) == 0) {
|
|---|
| 467 | *filesys_flags &= ~MS_NOEXEC;
|
|---|
| 468 | } else if (strncmp(data, "guest", 5) == 0) {
|
|---|
| 469 | got_password=1;
|
|---|
| 470 | } else if (strncmp(data, "ro", 2) == 0) {
|
|---|
| 471 | *filesys_flags |= MS_RDONLY;
|
|---|
| 472 | } else if (strncmp(data, "rw", 2) == 0) {
|
|---|
| 473 | *filesys_flags &= ~MS_RDONLY;
|
|---|
| 474 | } /* else if (strnicmp(data, "port", 4) == 0) {
|
|---|
| 475 | if (value && *value) {
|
|---|
| 476 | vol->port =
|
|---|
| 477 | simple_strtoul(value, &value, 0);
|
|---|
| 478 | }
|
|---|
| 479 | } else if (strnicmp(data, "rsize", 5) == 0) {
|
|---|
| 480 | if (value && *value) {
|
|---|
| 481 | vol->rsize =
|
|---|
| 482 | simple_strtoul(value, &value, 0);
|
|---|
| 483 | }
|
|---|
| 484 | } else if (strnicmp(data, "wsize", 5) == 0) {
|
|---|
| 485 | if (value && *value) {
|
|---|
| 486 | vol->wsize =
|
|---|
| 487 | simple_strtoul(value, &value, 0);
|
|---|
| 488 | }
|
|---|
| 489 | } else if (strnicmp(data, "version", 3) == 0) {
|
|---|
| 490 | } else {
|
|---|
| 491 | printf("CIFS: Unknown mount option %s\n",data);
|
|---|
| 492 | } */ /* nothing to do on those four mount options above.
|
|---|
| 493 | Just pass to kernel and ignore them here */
|
|---|
| 494 |
|
|---|
| 495 | /* move to next option */
|
|---|
| 496 | data = next_keyword+1;
|
|---|
| 497 |
|
|---|
| 498 | /* put overwritten equals sign back */
|
|---|
| 499 | if(value) {
|
|---|
| 500 | value--;
|
|---|
| 501 | *value = '=';
|
|---|
| 502 | }
|
|---|
| 503 |
|
|---|
| 504 | /* put previous overwritten comma back */
|
|---|
| 505 | if(next_keyword)
|
|---|
| 506 | *next_keyword = ',';
|
|---|
| 507 | else
|
|---|
| 508 | data = NULL;
|
|---|
| 509 | }
|
|---|
| 510 | return 0;
|
|---|
| 511 | }
|
|---|
| 512 |
|
|---|
| 513 | /* Note that caller frees the returned buffer if necessary */
|
|---|
| 514 | char * parse_server(char ** punc_name)
|
|---|
| 515 | {
|
|---|
| 516 | char * unc_name = *punc_name;
|
|---|
| 517 | int length = strnlen(unc_name,1024);
|
|---|
| 518 | char * share;
|
|---|
| 519 | char * ipaddress_string = NULL;
|
|---|
| 520 | struct hostent * host_entry;
|
|---|
| 521 | struct in_addr server_ipaddr;
|
|---|
| 522 | int rc;
|
|---|
| 523 |
|
|---|
| 524 | if(length > 1023) {
|
|---|
| 525 | printf("mount error: UNC name too long");
|
|---|
| 526 | return NULL;
|
|---|
| 527 | }
|
|---|
| 528 | if (strncasecmp("cifs://",unc_name,7) == 0)
|
|---|
| 529 | return parse_cifs_url(unc_name+7);
|
|---|
| 530 | if (strncasecmp("smb://",unc_name,6) == 0) {
|
|---|
| 531 | return parse_cifs_url(unc_name+6);
|
|---|
| 532 | }
|
|---|
| 533 |
|
|---|
| 534 | if(length < 3) {
|
|---|
| 535 | /* BB add code to find DFS root here */
|
|---|
| 536 | printf("\nMounting the DFS root for domain not implemented yet");
|
|---|
| 537 | return NULL;
|
|---|
| 538 | } else {
|
|---|
| 539 | if(strncmp(unc_name,"//",2) && strncmp(unc_name,"\\\\",2)) {
|
|---|
| 540 | /* check for nfs syntax ie server:share */
|
|---|
| 541 | share = strchr(unc_name,':');
|
|---|
| 542 | if(share) {
|
|---|
| 543 | free_share_name = 1;
|
|---|
| 544 | *punc_name = malloc(length+3);
|
|---|
| 545 | *share = '/';
|
|---|
| 546 | strncpy((*punc_name)+2,unc_name,length);
|
|---|
| 547 | unc_name = *punc_name;
|
|---|
| 548 | unc_name[length+2] = 0;
|
|---|
| 549 | goto continue_unc_parsing;
|
|---|
| 550 | } else {
|
|---|
| 551 | printf("mount error: improperly formatted UNC name.");
|
|---|
| 552 | printf(" %s does not begin with \\\\ or //\n",unc_name);
|
|---|
| 553 | return NULL;
|
|---|
| 554 | }
|
|---|
| 555 | } else {
|
|---|
| 556 | continue_unc_parsing:
|
|---|
| 557 | unc_name[0] = '/';
|
|---|
| 558 | unc_name[1] = '/';
|
|---|
| 559 | unc_name += 2;
|
|---|
| 560 | if ((share = strchr(unc_name, '/')) ||
|
|---|
| 561 | (share = strchr(unc_name,'\\'))) {
|
|---|
| 562 | *share = 0; /* temporarily terminate the string */
|
|---|
| 563 | share += 1;
|
|---|
| 564 | if(got_ip == 0) {
|
|---|
| 565 | host_entry = gethostbyname(unc_name);
|
|---|
| 566 | }
|
|---|
| 567 | *(share - 1) = '/'; /* put the slash back */
|
|---|
| 568 | if(got_ip) {
|
|---|
| 569 | if(verboseflag)
|
|---|
| 570 | printf("ip address specified explicitly\n");
|
|---|
| 571 | return NULL;
|
|---|
| 572 | }
|
|---|
| 573 | if(host_entry == NULL) {
|
|---|
| 574 | printf("mount error: could not find target server. TCP name %s not found ", unc_name);
|
|---|
| 575 | printf(" rc = %d\n",rc);
|
|---|
| 576 | return NULL;
|
|---|
| 577 | } else {
|
|---|
| 578 | /* BB should we pass an alternate version of the share name as Unicode */
|
|---|
| 579 | /* BB what about ipv6? BB */
|
|---|
| 580 | /* BB add retries with alternate servers in list */
|
|---|
| 581 |
|
|---|
| 582 | memcpy(&server_ipaddr.s_addr, host_entry->h_addr, 4);
|
|---|
| 583 |
|
|---|
| 584 | ipaddress_string = inet_ntoa(server_ipaddr);
|
|---|
| 585 | if(ipaddress_string == NULL) {
|
|---|
| 586 | printf("mount error: could not get valid ip address for target server\n");
|
|---|
| 587 | return NULL;
|
|---|
| 588 | }
|
|---|
| 589 | return ipaddress_string;
|
|---|
| 590 | }
|
|---|
| 591 | } else {
|
|---|
| 592 | /* BB add code to find DFS root (send null path on get DFS Referral to specified server here */
|
|---|
| 593 | printf("Mounting the DFS root for a particular server not implemented yet\n");
|
|---|
| 594 | return NULL;
|
|---|
| 595 | }
|
|---|
| 596 | }
|
|---|
| 597 | }
|
|---|
| 598 | }
|
|---|
| 599 |
|
|---|
| 600 | static struct option longopts[] = {
|
|---|
| 601 | { "all", 0, NULL, 'a' },
|
|---|
| 602 | { "help",0, NULL, 'h' },
|
|---|
| 603 | { "move",0, NULL, 'm' },
|
|---|
| 604 | { "bind",0, NULL, 'b' },
|
|---|
| 605 | { "read-only", 0, NULL, 'r' },
|
|---|
| 606 | { "ro", 0, NULL, 'r' },
|
|---|
| 607 | { "verbose", 0, NULL, 'v' },
|
|---|
| 608 | { "version", 0, NULL, 'V' },
|
|---|
| 609 | { "read-write", 0, NULL, 'w' },
|
|---|
| 610 | { "rw", 0, NULL, 'w' },
|
|---|
| 611 | { "options", 1, NULL, 'o' },
|
|---|
| 612 | { "type", 1, NULL, 't' },
|
|---|
| 613 | { "rsize",1, NULL, 'R' },
|
|---|
| 614 | { "wsize",1, NULL, 'W' },
|
|---|
| 615 | { "uid", 1, NULL, '1'},
|
|---|
| 616 | { "gid", 1, NULL, '2'},
|
|---|
| 617 | { "user",1,NULL,'u'},
|
|---|
| 618 | { "username",1,NULL,'u'},
|
|---|
| 619 | { "dom",1,NULL,'d'},
|
|---|
| 620 | { "domain",1,NULL,'d'},
|
|---|
| 621 | { "password",1,NULL,'p'},
|
|---|
| 622 | { "pass",1,NULL,'p'},
|
|---|
| 623 | { "credentials",1,NULL,'c'},
|
|---|
| 624 | { "port",1,NULL,'P'},
|
|---|
| 625 | /* { "uuid",1,NULL,'U'}, */ /* BB unimplemented */
|
|---|
| 626 | { NULL, 0, NULL, 0 }
|
|---|
| 627 | };
|
|---|
| 628 |
|
|---|
| 629 | int main(int argc, char ** argv)
|
|---|
| 630 | {
|
|---|
| 631 | int c;
|
|---|
| 632 | int flags = MS_MANDLOCK; /* no need to set legacy MS_MGC_VAL */
|
|---|
| 633 | char * orgoptions = NULL;
|
|---|
| 634 | char * share_name = NULL;
|
|---|
| 635 | char * domain_name = NULL;
|
|---|
| 636 | char * ipaddr = NULL;
|
|---|
| 637 | char * uuid = NULL;
|
|---|
| 638 | char * mountpoint;
|
|---|
| 639 | char * options;
|
|---|
| 640 | char * resolved_path;
|
|---|
| 641 | char * temp;
|
|---|
| 642 | int rc;
|
|---|
| 643 | int rsize = 0;
|
|---|
| 644 | int wsize = 0;
|
|---|
| 645 | int nomtab = 0;
|
|---|
| 646 | int uid = 0;
|
|---|
| 647 | int gid = 0;
|
|---|
| 648 | int optlen = 0;
|
|---|
| 649 | int orgoptlen = 0;
|
|---|
| 650 | struct stat statbuf;
|
|---|
| 651 | struct utsname sysinfo;
|
|---|
| 652 | struct mntent mountent;
|
|---|
| 653 | FILE * pmntfile;
|
|---|
| 654 |
|
|---|
| 655 | /* setlocale(LC_ALL, "");
|
|---|
| 656 | bindtextdomain(PACKAGE, LOCALEDIR);
|
|---|
| 657 | textdomain(PACKAGE); */
|
|---|
| 658 |
|
|---|
| 659 | if(argc && argv) {
|
|---|
| 660 | thisprogram = argv[0];
|
|---|
| 661 | }
|
|---|
| 662 | if(thisprogram == NULL)
|
|---|
| 663 | thisprogram = "mount.cifs";
|
|---|
| 664 |
|
|---|
| 665 | uname(&sysinfo);
|
|---|
| 666 | /* BB add workstation name and domain and pass down */
|
|---|
| 667 |
|
|---|
| 668 | /* #ifdef _GNU_SOURCE
|
|---|
| 669 | printf(" node: %s machine: %s sysname %s domain %s\n", sysinfo.nodename,sysinfo.machine,sysinfo.sysname,sysinfo.domainname);
|
|---|
| 670 | #endif */
|
|---|
| 671 |
|
|---|
| 672 | share_name = argv[1];
|
|---|
| 673 | mountpoint = argv[2];
|
|---|
| 674 |
|
|---|
| 675 | /* add sharename in opts string as unc= parm */
|
|---|
| 676 |
|
|---|
| 677 | while ((c = getopt_long (argc, argv, "afFhilL:no:O:rsSU:vVwt:",
|
|---|
| 678 | longopts, NULL)) != -1) {
|
|---|
| 679 | switch (c) {
|
|---|
| 680 | /* No code to do the following options yet */
|
|---|
| 681 | /* case 'l':
|
|---|
| 682 | list_with_volumelabel = 1;
|
|---|
| 683 | break;
|
|---|
| 684 | case 'L':
|
|---|
| 685 | volumelabel = optarg;
|
|---|
| 686 | break; */
|
|---|
| 687 | /* case 'a':
|
|---|
| 688 | ++mount_all;
|
|---|
| 689 | break; */
|
|---|
| 690 |
|
|---|
| 691 | case '?':
|
|---|
| 692 | case 'h': /* help */
|
|---|
| 693 | mount_cifs_usage ();
|
|---|
| 694 | exit(1);
|
|---|
| 695 | case 'n':
|
|---|
| 696 | ++nomtab;
|
|---|
| 697 | break;
|
|---|
| 698 | case 'b':
|
|---|
| 699 | flags |= MS_BIND;
|
|---|
| 700 | break;
|
|---|
| 701 | case 'm':
|
|---|
| 702 | flags |= MS_MOVE;
|
|---|
| 703 | break;
|
|---|
| 704 | case 'o':
|
|---|
| 705 | orgoptions = strdup(optarg);
|
|---|
| 706 | break;
|
|---|
| 707 | case 'r': /* mount readonly */
|
|---|
| 708 | flags |= MS_RDONLY;
|
|---|
| 709 | break;
|
|---|
| 710 | case 'U':
|
|---|
| 711 | uuid = optarg;
|
|---|
| 712 | break;
|
|---|
| 713 | case 'v':
|
|---|
| 714 | ++verboseflag;
|
|---|
| 715 | break;
|
|---|
| 716 | case 'V':
|
|---|
| 717 | printf ("mount.cifs version: %s.%s%s\n",
|
|---|
| 718 | MOUNT_CIFS_VERSION_MAJOR,
|
|---|
| 719 | MOUNT_CIFS_VERSION_MINOR,
|
|---|
| 720 | MOUNT_CIFS_VENDOR_SUFFIX);
|
|---|
| 721 | if(mountpassword) {
|
|---|
| 722 | memset(mountpassword,0,64);
|
|---|
| 723 | }
|
|---|
| 724 | exit (0);
|
|---|
| 725 | case 'w':
|
|---|
| 726 | flags &= ~MS_RDONLY;
|
|---|
| 727 | break;
|
|---|
| 728 | case 'R':
|
|---|
| 729 | rsize = atoi(optarg) ;
|
|---|
| 730 | break;
|
|---|
| 731 | case 'W':
|
|---|
| 732 | wsize = atoi(optarg);
|
|---|
| 733 | break;
|
|---|
| 734 | case '1':
|
|---|
| 735 | uid = atoi(optarg);
|
|---|
| 736 | break;
|
|---|
| 737 | case '2':
|
|---|
| 738 | gid = atoi(optarg);
|
|---|
| 739 | break;
|
|---|
| 740 | case 'u':
|
|---|
| 741 | got_user = 1;
|
|---|
| 742 | user_name = optarg;
|
|---|
| 743 | break;
|
|---|
| 744 | case 'd':
|
|---|
| 745 | domain_name = optarg;
|
|---|
| 746 | break;
|
|---|
| 747 | case 'p':
|
|---|
| 748 | if(mountpassword == NULL)
|
|---|
| 749 | mountpassword = calloc(65,1);
|
|---|
| 750 | if(mountpassword) {
|
|---|
| 751 | got_password = 1;
|
|---|
| 752 | strncpy(mountpassword,optarg,64);
|
|---|
| 753 | }
|
|---|
| 754 | break;
|
|---|
| 755 | case 'S':
|
|---|
| 756 | get_password_from_file(0 /* stdin */,NULL);
|
|---|
| 757 | break;
|
|---|
| 758 | case 't':
|
|---|
| 759 | break;
|
|---|
| 760 | default:
|
|---|
| 761 | printf("unknown mount option %c\n",c);
|
|---|
| 762 | mount_cifs_usage();
|
|---|
| 763 | exit(1);
|
|---|
| 764 | }
|
|---|
| 765 | }
|
|---|
| 766 |
|
|---|
| 767 | if(argc < 3)
|
|---|
| 768 | mount_cifs_usage();
|
|---|
| 769 |
|
|---|
| 770 | if (getenv("PASSWD")) {
|
|---|
| 771 | if(mountpassword == NULL)
|
|---|
| 772 | mountpassword = calloc(65,1);
|
|---|
| 773 | if(mountpassword) {
|
|---|
| 774 | strncpy(mountpassword,getenv("PASSWD"),64);
|
|---|
| 775 | got_password = 1;
|
|---|
| 776 | }
|
|---|
| 777 | } else if (getenv("PASSWD_FD")) {
|
|---|
| 778 | get_password_from_file(atoi(getenv("PASSWD_FD")),NULL);
|
|---|
| 779 | } else if (getenv("PASSWD_FILE")) {
|
|---|
| 780 | get_password_from_file(0, getenv("PASSWD_FILE"));
|
|---|
| 781 | }
|
|---|
| 782 |
|
|---|
| 783 | if (orgoptions && parse_options(orgoptions, &flags))
|
|---|
| 784 | return -1;
|
|---|
| 785 |
|
|---|
| 786 | ipaddr = parse_server(&share_name);
|
|---|
| 787 | if((ipaddr == NULL) && (got_ip == 0)) {
|
|---|
| 788 | printf("No ip address specified and hostname not found\n");
|
|---|
| 789 | return -1;
|
|---|
| 790 | }
|
|---|
| 791 |
|
|---|
| 792 |
|
|---|
| 793 | /* BB save off path and pop after mount returns? */
|
|---|
| 794 | resolved_path = malloc(PATH_MAX+1);
|
|---|
| 795 | if(resolved_path) {
|
|---|
| 796 | /* Note that if we can not canonicalize the name, we get
|
|---|
| 797 | another chance to see if it is valid when we chdir to it */
|
|---|
| 798 | if (realpath(mountpoint, resolved_path)) {
|
|---|
| 799 | mountpoint = resolved_path;
|
|---|
| 800 | }
|
|---|
| 801 | }
|
|---|
| 802 | if(chdir(mountpoint)) {
|
|---|
| 803 | printf("mount error: can not change directory into mount target %s\n",mountpoint);
|
|---|
| 804 | return -1;
|
|---|
| 805 | }
|
|---|
| 806 |
|
|---|
| 807 | if(stat (".", &statbuf)) {
|
|---|
| 808 | printf("mount error: mount point %s does not exist\n",mountpoint);
|
|---|
| 809 | return -1;
|
|---|
| 810 | }
|
|---|
| 811 |
|
|---|
| 812 | if (S_ISDIR(statbuf.st_mode) == 0) {
|
|---|
| 813 | printf("mount error: mount point %s is not a directory\n",mountpoint);
|
|---|
| 814 | return -1;
|
|---|
| 815 | }
|
|---|
| 816 |
|
|---|
| 817 | if((getuid() != 0) && (geteuid() == 0)) {
|
|---|
| 818 | if((statbuf.st_uid == getuid()) && (S_IRWXU == (statbuf.st_mode & S_IRWXU))) {
|
|---|
| 819 | #ifndef CIFS_ALLOW_USR_SUID
|
|---|
| 820 | /* Do not allow user mounts to control suid flag
|
|---|
| 821 | for mount unless explicitly built that way */
|
|---|
| 822 | flags |= MS_NOSUID | MS_NODEV;
|
|---|
| 823 | #endif
|
|---|
| 824 | } else {
|
|---|
| 825 | printf("mount error: permission denied or not superuser and mount.cifs not installed SUID\n");
|
|---|
| 826 | return -1;
|
|---|
| 827 | }
|
|---|
| 828 | }
|
|---|
| 829 |
|
|---|
| 830 | if(got_user == 0)
|
|---|
| 831 | user_name = getusername();
|
|---|
| 832 |
|
|---|
| 833 | if(got_password == 0) {
|
|---|
| 834 | mountpassword = getpass("Password: "); /* BB obsolete */
|
|---|
| 835 | got_password = 1;
|
|---|
| 836 | }
|
|---|
| 837 | /* FIXME launch daemon (handles dfs name resolution and credential change)
|
|---|
| 838 | remember to clear parms and overwrite password field before launching */
|
|---|
| 839 | if(orgoptions) {
|
|---|
| 840 | optlen = strlen(orgoptions);
|
|---|
| 841 | orgoptlen = optlen;
|
|---|
| 842 | } else
|
|---|
| 843 | optlen = 0;
|
|---|
| 844 | if(share_name)
|
|---|
| 845 | optlen += strlen(share_name) + 4;
|
|---|
| 846 | if(user_name)
|
|---|
| 847 | optlen += strlen(user_name) + 6;
|
|---|
| 848 | if(ipaddr)
|
|---|
| 849 | optlen += strlen(ipaddr) + 4;
|
|---|
| 850 | if(mountpassword)
|
|---|
| 851 | optlen += strlen(mountpassword) + 6;
|
|---|
| 852 | options = malloc(optlen + 10);
|
|---|
| 853 |
|
|---|
| 854 | if(options == NULL) {
|
|---|
| 855 | printf("Could not allocate memory for mount options\n");
|
|---|
| 856 | return -1;
|
|---|
| 857 | }
|
|---|
| 858 |
|
|---|
| 859 |
|
|---|
| 860 | options[0] = 0;
|
|---|
| 861 | strncat(options,"unc=",4);
|
|---|
| 862 | strcat(options,share_name);
|
|---|
| 863 | /* scan backwards and reverse direction of slash */
|
|---|
| 864 | temp = strrchr(options, '/');
|
|---|
| 865 | if(temp > options + 6)
|
|---|
| 866 | *temp = '\\';
|
|---|
| 867 | if(ipaddr) {
|
|---|
| 868 | strncat(options,",ip=",4);
|
|---|
| 869 | strcat(options,ipaddr);
|
|---|
| 870 | }
|
|---|
| 871 | if(user_name) {
|
|---|
| 872 | strncat(options,",user=",6);
|
|---|
| 873 | strcat(options,user_name);
|
|---|
| 874 | }
|
|---|
| 875 | if(mountpassword) {
|
|---|
| 876 | strncat(options,",pass=",6);
|
|---|
| 877 | strcat(options,mountpassword);
|
|---|
| 878 | }
|
|---|
| 879 | strncat(options,",ver=",5);
|
|---|
| 880 | strcat(options,MOUNT_CIFS_VERSION_MAJOR);
|
|---|
| 881 |
|
|---|
| 882 | if(orgoptions) {
|
|---|
| 883 | strcat(options,",");
|
|---|
| 884 | strcat(options,orgoptions);
|
|---|
| 885 | }
|
|---|
| 886 | if(verboseflag)
|
|---|
| 887 | printf("\nmount.cifs kernel mount options %s \n",options);
|
|---|
| 888 | if(mount(share_name, mountpoint, "cifs", flags, options)) {
|
|---|
| 889 | /* remember to kill daemon on error */
|
|---|
| 890 | switch (errno) {
|
|---|
| 891 | case 0:
|
|---|
| 892 | printf("mount failed but no error number set\n");
|
|---|
| 893 | break;
|
|---|
| 894 | case ENODEV:
|
|---|
| 895 | printf("mount error: cifs filesystem not supported by the system\n");
|
|---|
| 896 | break;
|
|---|
| 897 | default:
|
|---|
| 898 | printf("mount error %d = %s\n",errno,strerror(errno));
|
|---|
| 899 | }
|
|---|
| 900 | printf("Refer to the mount.cifs(8) manual page (e.g.man mount.cifs)\n");
|
|---|
| 901 | if(mountpassword) {
|
|---|
| 902 | memset(mountpassword,0,64);
|
|---|
| 903 | }
|
|---|
| 904 | return -1;
|
|---|
| 905 | } else {
|
|---|
| 906 | pmntfile = setmntent(MOUNTED, "a+");
|
|---|
| 907 | if(pmntfile) {
|
|---|
| 908 | mountent.mnt_fsname = share_name;
|
|---|
| 909 | mountent.mnt_dir = mountpoint;
|
|---|
| 910 | mountent.mnt_type = "cifs";
|
|---|
| 911 | mountent.mnt_opts = malloc(220);
|
|---|
| 912 | if(mountent.mnt_opts) {
|
|---|
| 913 | char * mount_user = getusername();
|
|---|
| 914 | memset(mountent.mnt_opts,0,200);
|
|---|
| 915 | if(flags & MS_RDONLY)
|
|---|
| 916 | strcat(mountent.mnt_opts,"ro");
|
|---|
| 917 | else
|
|---|
| 918 | strcat(mountent.mnt_opts,"rw");
|
|---|
| 919 | if(flags & MS_MANDLOCK)
|
|---|
| 920 | strcat(mountent.mnt_opts,",mand");
|
|---|
| 921 | else
|
|---|
| 922 | strcat(mountent.mnt_opts,",nomand");
|
|---|
| 923 | if(flags & MS_NOEXEC)
|
|---|
| 924 | strcat(mountent.mnt_opts,",noexec");
|
|---|
| 925 | if(flags & MS_NOSUID)
|
|---|
| 926 | strcat(mountent.mnt_opts,",nosuid");
|
|---|
| 927 | if(flags & MS_NODEV)
|
|---|
| 928 | strcat(mountent.mnt_opts,",nodev");
|
|---|
| 929 | if(flags & MS_SYNCHRONOUS)
|
|---|
| 930 | strcat(mountent.mnt_opts,",synch");
|
|---|
| 931 | if(mount_user) {
|
|---|
| 932 | if(getuid() != 0) {
|
|---|
| 933 | strcat(mountent.mnt_opts,",user=");
|
|---|
| 934 | strcat(mountent.mnt_opts,mount_user);
|
|---|
| 935 | }
|
|---|
| 936 | free(mount_user);
|
|---|
| 937 | }
|
|---|
| 938 | }
|
|---|
| 939 | mountent.mnt_freq = 0;
|
|---|
| 940 | mountent.mnt_passno = 0;
|
|---|
| 941 | rc = addmntent(pmntfile,&mountent);
|
|---|
| 942 | endmntent(pmntfile);
|
|---|
| 943 | if(mountent.mnt_opts)
|
|---|
| 944 | free(mountent.mnt_opts);
|
|---|
| 945 | } else {
|
|---|
| 946 | printf("could not update mount table\n");
|
|---|
| 947 | }
|
|---|
| 948 | }
|
|---|
| 949 | if(mountpassword) {
|
|---|
| 950 | memset(mountpassword,0,64);
|
|---|
| 951 | free(mountpassword);
|
|---|
| 952 | }
|
|---|
| 953 |
|
|---|
| 954 | if(options) {
|
|---|
| 955 | memset(options,0,optlen);
|
|---|
| 956 | free(options);
|
|---|
| 957 | }
|
|---|
| 958 |
|
|---|
| 959 | if(orgoptions) {
|
|---|
| 960 | memset(orgoptions,0,orgoptlen);
|
|---|
| 961 | free(orgoptions);
|
|---|
| 962 | }
|
|---|
| 963 | if(resolved_path) {
|
|---|
| 964 | free(resolved_path);
|
|---|
| 965 | }
|
|---|
| 966 |
|
|---|
| 967 | if(free_share_name) {
|
|---|
| 968 | free(share_name);
|
|---|
| 969 | }
|
|---|
| 970 | return 0;
|
|---|
| 971 | }
|
|---|
| 972 |
|
|---|
