mirror of
https://github.com/samba-team/samba.git
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Add early prototype of cifs mount helper for Linux
(This used to be commit b20bcf8d33)
This commit is contained in:
Steve French
parent
24c95539d5
commit
f944fd6975
389
source3/client/mount.cifs.c
Executable file
389
source3/client/mount.cifs.c
Executable file
@ -0,0 +1,389 @@
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#define _GNU_SOURCE
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#include <stdlib.h>
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#include <unistd.h>
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#include <pwd.h>
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#include <sys/types.h>
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include <sys/utsname.h>
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#include <getopt.h>
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#include <errno.h>
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#include <netdb.h>
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#include <string.h>
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#define MOUNT_CIFS_VERSION "1"
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extern char *getusername(void);
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char * thisprogram;
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int verboseflag = 0;
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static int got_password = 0;
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static int got_user = 0;
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static char * user_name = NULL;
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char * mountpassword = NULL;
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void mount_cifs_usage()
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{
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printf("\nUsage: %s remotetarget dir\n", thisprogram);
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printf("\nMount the remotetarget, specified as either a UNC name or ");
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printf(" CIFS URL, to the local directory, dir.\n");
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return;
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}
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/* caller frees username if necessary */
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char * getusername() {
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char *username = NULL;
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struct passwd *password = getpwuid(getuid());
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if (password) {
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username = password->pw_name;
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}
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return username;
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}
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char * parse_cifs_url(unc_name)
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{
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printf("\ncifs url %s\n",unc_name);
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}
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char * parse_options(char * options)
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{
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/* BB add missing code BB */
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}
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/* Note that caller frees the returned buffer if necessary */
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char * parse_server(char * unc_name)
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{
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int length = strnlen(unc_name,1024);
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char * share;
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char * ipaddress_string = NULL;
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struct hostent * host_entry;
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struct in_addr server_ipaddr;
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int rc,j;
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char temp[64];
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if(length > 1023) {
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printf("mount error: UNC name too long");
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return 0;
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}
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if (strncasecmp("cifs://",unc_name,7) == 0)
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return parse_cifs_url(unc_name+7);
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if (strncasecmp("smb://",unc_name,6) == 0) {
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return parse_cifs_url(unc_name+6);
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}
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if(length < 3) {
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/* BB add code to find DFS root here */
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printf("\nMounting the DFS root for domain not implemented yet");
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return 0;
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} else {
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/* BB add support for \\\\ not just // */
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if(strncmp(unc_name,"//",2) && strncmp(unc_name,"\\\\",2)) {
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printf("mount error: improperly formatted UNC name.");
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printf(" %s does not begin with \\\\ or //\n",unc_name);
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return 0;
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} else {
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unc_name += 2;
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if (share = strchr(unc_name, '/')) {
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*share = 0; /* temporarily terminate the string */
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share += 1;
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host_entry = gethostbyname(unc_name);
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*(share - 1) = '\\'; /* put the slash back */
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/* rc = getipnodebyname(unc_name, AF_INET, AT_ADDRCONFIG ,&rc);*/
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if(host_entry == NULL) {
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printf("mount error: could not find target server. TCP name %s not found ", unc_name);
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printf(" rc = %d\n",rc);
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return 0;
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}
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else {
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printf("Target server %s %x found\n",host_entry->h_name,host_entry->h_addr); /* BB removeme */
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/* BB should we pass an alternate version of the share name as Unicode */
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/* BB what about ipv6? BB */
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/* BB add retries with alternate servers in list */
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memcpy(&server_ipaddr.s_addr, host_entry->h_addr, 4);
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ipaddress_string = inet_ntoa(server_ipaddr);
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if(ipaddress_string == NULL) {
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printf("mount error: could not get valid ip address for target server\n");
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return 0;
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}
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return ipaddress_string;
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}
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} else {
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/* BB add code to find DFS root (send null path on get DFS Referral to specified server here */
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printf("Mounting the DFS root for a particular server not implemented yet\n");
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return 0;
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}
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}
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}
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}
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static struct option longopts[] = {
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{ "all", 0, 0, 'a' },
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{ "help", 0, 0, 'h' },
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{ "read-only", 0, 0, 'r' },
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{ "ro", 0, 0, 'r' },
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{ "verbose", 0, 0, 'v' },
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{ "version", 0, 0, 'V' },
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{ "read-write", 0, 0, 'w' },
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{ "rw", 0, 0, 'w' },
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{ "options", 1, 0, 'o' },
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{ "types", 1, 0, 't' },
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{ "replace", 0, 0, 129 },
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{ "after", 0, 0, 130 },
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{ "before", 0, 0, 131 },
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{ "over", 0, 0, 132 },
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{ "move", 0, 0, 133 },
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{ "rsize",1, 0, 136 },
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{ "wsize",1, 0, 137 },
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{ "uid", 1, 0, 138},
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{ "gid", 1, 0, 139},
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{ "uuid",1,0,'U' },
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{ "user",1,0,140},
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{ "username",1,0,140},
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{ "dom",1,0,141},
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{ "domain",1,0,141},
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{ "password",1,0,142},
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{ NULL, 0, 0, 0 }
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};
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int main(int argc, char ** argv)
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{
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int c;
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int flags = MS_MANDLOCK | MS_MGC_VAL;
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char * orgoptions = NULL;
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char * options;
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char * share_name;
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char * domain_name = NULL;
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char * ipaddr;
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char * mount_point;
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char * uuid = NULL;
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int rc,i;
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int rsize = 0;
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int wsize = 0;
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int nomtab = 0;
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int uid = 0;
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int gid = 0;
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int optlen = 0;
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struct stat statbuf;
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struct utsname sysinfo;
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/* setlocale(LC_ALL, "");
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bindtextdomain(PACKAGE, LOCALEDIR);
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textdomain(PACKAGE); */
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if(argc && argv) {
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thisprogram = argv[0];
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}
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if(thisprogram == NULL)
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thisprogram = "mount.cifs";
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uname(&sysinfo);
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#ifdef _GNU_SOURCE
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printf(" node: %s machine: %s\n", sysinfo.nodename,sysinfo.machine);
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#endif
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mount_cifs_usage();
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share_name = argv[1];
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mount_point = argv[2];
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/* add sharename in opts string as unc= parm */
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while ((c = getopt_long (argc, argv, "afFhilL:no:O:rsU:vVwt:",
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longopts, NULL)) != -1) {
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switch (c) {
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/* case 'a':
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++mount_all;
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break;
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case 'f':
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++fake;
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break;
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case 'F':
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++optfork;
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break; */
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case 'h': /* help */
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mount_cifs_usage ();
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break;
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/* case 'i':
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external_allowed = 0;
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break;
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case 'l':
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list_with_volumelabel = 1;
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break;
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case 'L':
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volumelabel = optarg;
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break; */
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case 'n':
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++nomtab;
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break;
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case 'o':
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if (orgoptions) {
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orgoptions = strcat(orgoptions, ",");
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orgoptions = strcat(orgoptions,optarg);
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} else
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orgoptions = strdup(optarg);
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break;
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/* case 'O':
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if (test_opts)
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test_opts = xstrconcat3(test_opts, ",", optarg);
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else
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test_opts = xstrdup(optarg);
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break;*/
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case 'r': /* mount readonly */
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flags |= MS_RDONLY;;
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break;
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case 'U':
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uuid = optarg;
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break;
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case 'v':
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++verboseflag;
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break;
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/* case 'V':
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printf ("mount: %s\n", version);
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exit (0);*/
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case 'w':
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flags &= ~MS_RDONLY;;
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break;
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/* case 0:
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break;
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case 128:
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mounttype = MS_BIND;
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break;
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case 129:
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mounttype = MS_REPLACE;
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break;
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case 130:
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mounttype = MS_AFTER;
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break;
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case 131:
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mounttype = MS_BEFORE;
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break;
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case 132:
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mounttype = MS_OVER;
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break;
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case 133:
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mounttype = MS_MOVE;
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break;
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case 135:
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mounttype = (MS_BIND | MS_REC);
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break; */
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case 136:
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rsize = atoi(optarg) ;
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break;
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case 137:
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wsize = atoi(optarg);
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break;
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case 138:
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uid = atoi(optarg);
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break;
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case 139:
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gid = atoi(optarg);
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break;
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case 140:
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got_user = 1;
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user_name = optarg;
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break;
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case 141:
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domain_name = optarg;
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break;
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case 142:
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got_password = 1;
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mountpassword = optarg;
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break;
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case '?':
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default:
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mount_cifs_usage ();
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}
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}
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for(i = 0;i < argc;i++) /* BB remove */
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printf("\narg %d is %s",i,argv[i]); /* BB remove */
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printf("\n"); /* BB removeme */
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/* canonicalize the path in argv[1]? */
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if(stat (mount_point, &statbuf)) {
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printf("mount error: mount point %s does not exist\n",mount_point);
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return -1;
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}
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if (S_ISDIR(statbuf.st_mode) == 0) {
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printf("mount error: mount point %s is not a directory\n",mount_point);
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return -1;
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}
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if(geteuid()) {
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printf("mount error: permission denied, not superuser and cifs.mount not installed SUID\n");
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return -1;
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}
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ipaddr = parse_server(share_name);
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/* if(share_name == NULL)
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return 1; */
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parse_options(orgoptions);
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if(got_user == 0)
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user_name = getusername();
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/* check username for user%password format */
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if(got_password == 0) {
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if (getenv("PASSWD")) {
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mountpassword = malloc(33);
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if(mountpassword) {
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strncpy(mountpassword,getenv("PASSWD"),32);
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got_password = 1;
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}
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/* } else if (getenv("PASSWD_FD") || getenv("PASSWD_FILE")) {
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get_password_file();
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got_password = 1;*/ /* BB add missing function */
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} else {
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mountpassword = getpass("Password: "); /* BB obsolete */
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got_password = 1;
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}
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}
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/* launch daemon (handles dfs name resolution and credential change) */
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if(orgoptions)
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optlen = strlen(orgoptions);
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else
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optlen = 0;
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options = malloc(optlen + 25 + strlen(share_name) + strlen(user_name)
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+ strlen(ipaddr) + 1);
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strcpy(options,"unc=");
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strcat(options,share_name);
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strncat(options,",ip=",4);
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strcat(options,ipaddr);
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strncat(options,",user=",6);
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strcat(options,user_name);
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strncat(options,",pass=",6);
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strcat(options,mountpassword);
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strncat(options,",ver=",5);
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strcat(options,MOUNT_CIFS_VERSION);
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if(optlen)
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strcat(options,orgoptions);
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printf("\noptions %s \n",options);
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if(mount(share_name, mount_point, "cifs", flags, options)) {
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/* remember to kill daemon on error */
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switch (errno) {
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case 0:
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printf(" success\n"); /* BB removeme */
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return 0;
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case ENODEV:
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printf("mount error: cifs filesystem not supported by the system\n");
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break;
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default:
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printf("mount error %d = %s",errno,strerror(errno));
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}
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printf("\nRefer to the mount.cifs(8) manual page (e.g.man mount.cifs)\n");
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return -1;
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} else
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printf(" mount succeeded\n"); /* BB removeme */
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}
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