xref: /illumos-gate/usr/src/cmd/smbsrv/fksmbd/fksmbd_shr.c (revision 4f0ce1da2aeae875aeb13640b681d0ad37a3036b)
1 /*
2  * This file and its contents are supplied under the terms of the
3  * Common Development and Distribution License ("CDDL"), version 1.0.
4  * You may only use this file in accordance with the terms of version
5  * 1.0 of the CDDL.
6  *
7  * A full copy of the text of the CDDL should have accompanied this
8  * source.  A copy of the CDDL is also available via the Internet at
9  * http://www.illumos.org/license/CDDL.
10  */
11 
12 /*
13  * Copyright 2014-2021 Tintri by DDN, Inc. All rights reserved.
14  */
15 
16 /*
17  * Replace the smb_shr_load() function in libmlsvc, because
18  * fksmbd doesn't want the real shares known by libshare,
19  * instead preferring its own (fake) list of shares.
20  */
21 
22 #include <sys/types.h>
23 
24 
25 #include <errno.h>
26 #include <stdio.h>
27 #include <stdlib.h>
28 #include <strings.h>
29 #include <syslog.h>
30 #include <libshare.h>
31 #include <unistd.h>
32 #include <note.h>
33 
34 #include <smbsrv/libsmb.h>
35 #include <smbsrv/libsmbns.h>
36 #include <smbsrv/libmlsvc.h>
37 #include <smbsrv/smb_share.h>
38 #include <smbsrv/smb.h>
39 
40 #define	SMB_SHRF_ENCRYPT	0x8000	// SMB2_SHAREFLAG_ENCRYPT_DATA?
41 
42 static void
new_share(char * name,char * path,char * comment,int flags)43 new_share(char *name, char *path, char *comment, int flags)
44 {
45 	smb_share_t si;
46 
47 	bzero(&si, sizeof (si));
48 	(void) strlcpy(si.shr_name, name, MAXNAMELEN);
49 	(void) strlcpy(si.shr_path, path, MAXPATHLEN);
50 	(void) strlcpy(si.shr_cmnt, comment, SMB_SHARE_CMNT_MAX);
51 	if (flags & SMB_SHRF_ENCRYPT) {
52 		flags &= ~SMB_SHRF_ENCRYPT;
53 		si.shr_encrypt = SMB_CONFIG_REQUIRED;
54 	}
55 	si.shr_flags = flags;
56 
57 
58 	if (smb_shr_add(&si) != 0) {
59 		syslog(LOG_ERR, "failed to add test share: %s",
60 		    si.shr_name);
61 	}
62 }
63 
64 /*
65  * This function loads a list of shares from a text file, where
66  * each line of the file contains:
67  * name path comment
68  *
69  * This is only for fksmbd, for testing.
70  */
71 void
shr_load_file(char * shr_file)72 shr_load_file(char *shr_file)
73 {
74 	char linebuf[1024];
75 	FILE *fp;
76 	char *p;
77 	char *name, *path, *comment;
78 
79 	fp = fopen(shr_file, "r");
80 	if (fp == NULL) {
81 		perror(shr_file);
82 		return;
83 	}
84 
85 	while ((p = fgets(linebuf, sizeof (linebuf), fp)) != NULL) {
86 
87 		name = p;
88 		p = strpbrk(p, " \t\n");
89 		if (p == NULL)
90 			continue;
91 		*p++ = '\0';
92 
93 		path = p;
94 		p = strpbrk(p, " \t\n");
95 		if (p == NULL)
96 			comment = "";
97 		else {
98 			*p++ = '\0';
99 
100 			comment = p;
101 			p = strchr(p, '\n');
102 			if (p != NULL)
103 				*p++ = '\0';
104 		}
105 		new_share(name, path, comment, 0);
106 	}
107 	(void) fclose(fp);
108 }
109 
110 /*ARGSUSED*/
111 void *
smb_shr_load(void * args)112 smb_shr_load(void *args)
113 {
114 	char *shr_file;
115 	_NOTE(ARGUNUSED(args))
116 
117 	/*
118 	 * Not loading the real shares in fksmbd because that
119 	 * tries to enable the network/smb/server service.
120 	 * Also, we won't generally have access to everything
121 	 * in the real shares, because fksmbd runs (only) with
122 	 * the credentials of the user who runs it.
123 	 */
124 	new_share("test", "/var/smb/test", "fksmbd test share",
125 	    SMB_SHRF_GUEST_OK);
126 	new_share("testca", "/var/smb/test", "fksmbd test CA share",
127 	    SMB_SHRF_CA);
128 	new_share("teste", "/var/smb/test", "fksmbd test encrypted share",
129 	    SMB_SHRF_ENCRYPT);
130 
131 	/* Allow creating lots of shares for testing. */
132 	shr_file = getenv("FKSMBD_SHARE_FILE");
133 	if (shr_file != NULL)
134 		shr_load_file(shr_file);
135 
136 	return (NULL);
137 }
138 
139 void
smb_shr_load_execinfo()140 smb_shr_load_execinfo()
141 {
142 }
143 
144 void
smb_shr_unload()145 smb_shr_unload()
146 {
147 }
148