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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/ssh/sftp-server/../sftp-common.c	Lines:	0	123	0.0 %
Date:	2017-11-07	Branches:	0	90	0.0 %


/* $OpenBSD: sftp-common.c,v 1.30 2017/06/10 06:36:46 djm Exp $ */
/*
 * Copyright (c) 2001 Markus Friedl.  All rights reserved.
 * Copyright (c) 2001 Damien Miller.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/types.h>
#include <sys/stat.h>

#include <grp.h>
#include <pwd.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <stdarg.h>
#include <stdlib.h>
#include <util.h>

#include "xmalloc.h"
#include "ssherr.h"
#include "sshbuf.h"
#include "log.h"
#include "misc.h"

#include "sftp.h"
#include "sftp-common.h"

/* Clear contents of attributes structure */
void
attrib_clear(Attrib *a)
{
	a->flags = 0;
	a->size = 0;
	a->uid = 0;
	a->gid = 0;
	a->perm = 0;
	a->atime = 0;
	a->mtime = 0;
}

/* Convert from struct stat to filexfer attribs */
void
stat_to_attrib(const struct stat *st, Attrib *a)
{
	attrib_clear(a);
	a->flags = 0;
	a->flags |= SSH2_FILEXFER_ATTR_SIZE;
	a->size = st->st_size;
	a->flags |= SSH2_FILEXFER_ATTR_UIDGID;
	a->uid = st->st_uid;
	a->gid = st->st_gid;
	a->flags |= SSH2_FILEXFER_ATTR_PERMISSIONS;
	a->perm = st->st_mode;
	a->flags |= SSH2_FILEXFER_ATTR_ACMODTIME;
	a->atime = st->st_atime;
	a->mtime = st->st_mtime;
}

/* Convert from filexfer attribs to struct stat */
void
attrib_to_stat(const Attrib *a, struct stat *st)
{
	memset(st, 0, sizeof(*st));

	if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
		st->st_size = a->size;
	if (a->flags & SSH2_FILEXFER_ATTR_UIDGID) {
		st->st_uid = a->uid;
		st->st_gid = a->gid;
	}
	if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
		st->st_mode = a->perm;
	if (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
		st->st_atime = a->atime;
		st->st_mtime = a->mtime;
	}
}

/* Decode attributes in buffer */
int
decode_attrib(struct sshbuf *b, Attrib *a)
{
	int r;

	attrib_clear(a);
	if ((r = sshbuf_get_u32(b, &a->flags)) != 0)
		return r;
	if (a->flags & SSH2_FILEXFER_ATTR_SIZE) {
		if ((r = sshbuf_get_u64(b, &a->size)) != 0)
			return r;
	}
	if (a->flags & SSH2_FILEXFER_ATTR_UIDGID) {
		if ((r = sshbuf_get_u32(b, &a->uid)) != 0 ||
		    (r = sshbuf_get_u32(b, &a->gid)) != 0)
			return r;
	}
	if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) {
		if ((r = sshbuf_get_u32(b, &a->perm)) != 0)
			return r;
	}
	if (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
		if ((r = sshbuf_get_u32(b, &a->atime)) != 0 ||
		    (r = sshbuf_get_u32(b, &a->mtime)) != 0)
			return r;
	}
	/* vendor-specific extensions */
	if (a->flags & SSH2_FILEXFER_ATTR_EXTENDED) {
		char *type;
		u_char *data;
		size_t dlen;
		u_int i, count;

		if ((r = sshbuf_get_u32(b, &count)) != 0)
			fatal("%s: buffer error: %s", __func__, ssh_err(r));
		for (i = 0; i < count; i++) {
			if ((r = sshbuf_get_cstring(b, &type, NULL)) != 0 ||
			    (r = sshbuf_get_string(b, &data, &dlen)) != 0)
				return r;
			debug3("Got file attribute \"%.100s\" len %zu",
			    type, dlen);
			free(type);
			free(data);
		}
	}
	return 0;
}

/* Encode attributes to buffer */
int
encode_attrib(struct sshbuf *b, const Attrib *a)
{
	int r;

	if ((r = sshbuf_put_u32(b, a->flags)) != 0)
		return r;
	if (a->flags & SSH2_FILEXFER_ATTR_SIZE) {
		if ((r = sshbuf_put_u64(b, a->size)) != 0)
			return r;
	}
	if (a->flags & SSH2_FILEXFER_ATTR_UIDGID) {
		if ((r = sshbuf_put_u32(b, a->uid)) != 0 ||
		    (r = sshbuf_put_u32(b, a->gid)) != 0)
			return r;
	}
	if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) {
		if ((r = sshbuf_put_u32(b, a->perm)) != 0)
			return r;
	}
	if (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
		if ((r = sshbuf_put_u32(b, a->atime)) != 0 ||
		    (r = sshbuf_put_u32(b, a->mtime)) != 0)
			return r;
	}
	return 0;
}

/* Convert from SSH2_FX_ status to text error message */
const char *
fx2txt(int status)
{
	switch (status) {
	case SSH2_FX_OK:
		return("No error");
	case SSH2_FX_EOF:
		return("End of file");
	case SSH2_FX_NO_SUCH_FILE:
		return("No such file or directory");
	case SSH2_FX_PERMISSION_DENIED:
		return("Permission denied");
	case SSH2_FX_FAILURE:
		return("Failure");
	case SSH2_FX_BAD_MESSAGE:
		return("Bad message");
	case SSH2_FX_NO_CONNECTION:
		return("No connection");
	case SSH2_FX_CONNECTION_LOST:
		return("Connection lost");
	case SSH2_FX_OP_UNSUPPORTED:
		return("Operation unsupported");
	default:
		return("Unknown status");
	}
	/* NOTREACHED */
}

/*
 * drwxr-xr-x    5 markus   markus       1024 Jan 13 18:39 .ssh
 */
char *
ls_file(const char *name, const struct stat *st, int remote, int si_units)
{
	int ulen, glen, sz = 0;
	struct tm *ltime = localtime(&st->st_mtime);
	char *user, *group;
	char buf[1024], lc[8], mode[11+1], tbuf[12+1], ubuf[11+1], gbuf[11+1];
	char sbuf[FMT_SCALED_STRSIZE];
	time_t now;

	strmode(st->st_mode, mode);
	if (remote) {
		snprintf(ubuf, sizeof ubuf, "%u", (u_int)st->st_uid);
		user = ubuf;
		snprintf(gbuf, sizeof gbuf, "%u", (u_int)st->st_gid);
		group = gbuf;
		strlcpy(lc, "?", sizeof(lc));
	} else {
		user = user_from_uid(st->st_uid, 0);
		group = group_from_gid(st->st_gid, 0);
		snprintf(lc, sizeof(lc), "%u", (u_int)st->st_nlink);
	}
	if (ltime != NULL) {
		now = time(NULL);
		if (now - (365*24*60*60)/2 < st->st_mtime &&
		    now >= st->st_mtime)
			sz = strftime(tbuf, sizeof tbuf, "%b %e %H:%M", ltime);
		else
			sz = strftime(tbuf, sizeof tbuf, "%b %e  %Y", ltime);
	}
	if (sz == 0)
		tbuf[0] = '\0';
	ulen = MAXIMUM(strlen(user), 8);
	glen = MAXIMUM(strlen(group), 8);
	if (si_units) {
		fmt_scaled((long long)st->st_size, sbuf);
		snprintf(buf, sizeof buf, "%s %3s %-*s %-*s %8s %s %s",
		    mode, lc, ulen, user, glen, group,
		    sbuf, tbuf, name);
	} else {
		snprintf(buf, sizeof buf, "%s %3s %-*s %-*s %8llu %s %s",
		    mode, lc, ulen, user, glen, group,
		    (unsigned long long)st->st_size, tbuf, name);
	}
	return xstrdup(buf);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: sftp-common.c,v 1.30 2017/06/10 06:36:46 djm Exp $ */
2			/*
3			* Copyright (c) 2001 Markus Friedl. All rights reserved.
4			* Copyright (c) 2001 Damien Miller. All rights reserved.
5			*
6			* Redistribution and use in source and binary forms, with or without
7			* modification, are permitted provided that the following conditions
8			* are met:
9			* 1. Redistributions of source code must retain the above copyright
10			* notice, this list of conditions and the following disclaimer.
11			* 2. Redistributions in binary form must reproduce the above copyright
12			* notice, this list of conditions and the following disclaimer in the
13			* documentation and/or other materials provided with the distribution.
14			*
15			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16			* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17			* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18			* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19			* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20			* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21			* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22			* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23			* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24			* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25			*/
26
27			#include <sys/types.h>
28			#include <sys/stat.h>
29
30			#include <grp.h>
31			#include <pwd.h>
32			#include <stdio.h>
33			#include <string.h>
34			#include <time.h>
35			#include <stdarg.h>
36			#include <stdlib.h>
37			#include <util.h>
38
39			#include "xmalloc.h"
40			#include "ssherr.h"
41			#include "sshbuf.h"
42			#include "log.h"
43			#include "misc.h"
44
45			#include "sftp.h"
46			#include "sftp-common.h"
47
48			/* Clear contents of attributes structure */
49			void
50			attrib_clear(Attrib *a)
51			{
52			a->flags = 0;
53			a->size = 0;
54			a->uid = 0;
55			a->gid = 0;
56			a->perm = 0;
57			a->atime = 0;
58			a->mtime = 0;
59			}
60
61			/* Convert from struct stat to filexfer attribs */
62			void
63			stat_to_attrib(const struct stat st, Attrib a)
64			{
65			attrib_clear(a);
66			a->flags = 0;
67			a->flags \|= SSH2_FILEXFER_ATTR_SIZE;
68			a->size = st->st_size;
69			a->flags \|= SSH2_FILEXFER_ATTR_UIDGID;
70			a->uid = st->st_uid;
71			a->gid = st->st_gid;
72			a->flags \|= SSH2_FILEXFER_ATTR_PERMISSIONS;
73			a->perm = st->st_mode;
74			a->flags \|= SSH2_FILEXFER_ATTR_ACMODTIME;
75			a->atime = st->st_atime;
76			a->mtime = st->st_mtime;
77			}
78
79			/* Convert from filexfer attribs to struct stat */
80			void
81			attrib_to_stat(const Attrib a, struct stat st)
82			{
83			memset(st, 0, sizeof(*st));
84
85			if (a->flags & SSH2_FILEXFER_ATTR_SIZE)
86			st->st_size = a->size;
87			if (a->flags & SSH2_FILEXFER_ATTR_UIDGID) {
88			st->st_uid = a->uid;
89			st->st_gid = a->gid;
90			}
91			if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS)
92			st->st_mode = a->perm;
93			if (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
94			st->st_atime = a->atime;
95			st->st_mtime = a->mtime;
96			}
97			}
98
99			/* Decode attributes in buffer */
100			int
101			decode_attrib(struct sshbuf b, Attrib a)
102			{
103			int r;
104
105			attrib_clear(a);
106			if ((r = sshbuf_get_u32(b, &a->flags)) != 0)
107			return r;
108			if (a->flags & SSH2_FILEXFER_ATTR_SIZE) {
109			if ((r = sshbuf_get_u64(b, &a->size)) != 0)
110			return r;
111			}
112			if (a->flags & SSH2_FILEXFER_ATTR_UIDGID) {
113			if ((r = sshbuf_get_u32(b, &a->uid)) != 0 \|\|
114			(r = sshbuf_get_u32(b, &a->gid)) != 0)
115			return r;
116			}
117			if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) {
118			if ((r = sshbuf_get_u32(b, &a->perm)) != 0)
119			return r;
120			}
121			if (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
122			if ((r = sshbuf_get_u32(b, &a->atime)) != 0 \|\|
123			(r = sshbuf_get_u32(b, &a->mtime)) != 0)
124			return r;
125			}
126			/* vendor-specific extensions */
127			if (a->flags & SSH2_FILEXFER_ATTR_EXTENDED) {
128			char *type;
129			u_char *data;
130			size_t dlen;
131			u_int i, count;
132
133			if ((r = sshbuf_get_u32(b, &count)) != 0)
134			fatal("%s: buffer error: %s", __func__, ssh_err(r));
135			for (i = 0; i < count; i++) {
136			if ((r = sshbuf_get_cstring(b, &type, NULL)) != 0 \|\|
137			(r = sshbuf_get_string(b, &data, &dlen)) != 0)
138			return r;
139			debug3("Got file attribute \"%.100s\" len %zu",
140			type, dlen);
141			free(type);
142			free(data);
143			}
144			}
145			return 0;
146			}
147
148			/* Encode attributes to buffer */
149			int
150			encode_attrib(struct sshbuf b, const Attrib a)
151			{
152			int r;
153
154			if ((r = sshbuf_put_u32(b, a->flags)) != 0)
155			return r;
156			if (a->flags & SSH2_FILEXFER_ATTR_SIZE) {
157			if ((r = sshbuf_put_u64(b, a->size)) != 0)
158			return r;
159			}
160			if (a->flags & SSH2_FILEXFER_ATTR_UIDGID) {
161			if ((r = sshbuf_put_u32(b, a->uid)) != 0 \|\|
162			(r = sshbuf_put_u32(b, a->gid)) != 0)
163			return r;
164			}
165			if (a->flags & SSH2_FILEXFER_ATTR_PERMISSIONS) {
166			if ((r = sshbuf_put_u32(b, a->perm)) != 0)
167			return r;
168			}
169			if (a->flags & SSH2_FILEXFER_ATTR_ACMODTIME) {
170			if ((r = sshbuf_put_u32(b, a->atime)) != 0 \|\|
171			(r = sshbuf_put_u32(b, a->mtime)) != 0)
172			return r;
173			}
174			return 0;
175			}
176
177			/* Convert from SSH2_FX_ status to text error message */
178			const char *
179			fx2txt(int status)
180			{
181			switch (status) {
182			case SSH2_FX_OK:
183			return("No error");
184			case SSH2_FX_EOF:
185			return("End of file");
186			case SSH2_FX_NO_SUCH_FILE:
187			return("No such file or directory");
188			case SSH2_FX_PERMISSION_DENIED:
189			return("Permission denied");
190			case SSH2_FX_FAILURE:
191			return("Failure");
192			case SSH2_FX_BAD_MESSAGE:
193			return("Bad message");
194			case SSH2_FX_NO_CONNECTION:
195			return("No connection");
196			case SSH2_FX_CONNECTION_LOST:
197			return("Connection lost");
198			case SSH2_FX_OP_UNSUPPORTED:
199			return("Operation unsupported");
200			default:
201			return("Unknown status");
202			}
203			/* NOTREACHED */
204			}
205
206			/*
207			* drwxr-xr-x 5 markus markus 1024 Jan 13 18:39 .ssh
208			*/
209			char *
210			ls_file(const char name, const struct stat st, int remote, int si_units)
211			{
212			int ulen, glen, sz = 0;
213			struct tm *ltime = localtime(&st->st_mtime);
214			char user, group;
215			char buf[1024], lc[8], mode[11+1], tbuf[12+1], ubuf[11+1], gbuf[11+1];
216			char sbuf[FMT_SCALED_STRSIZE];
217			time_t now;
218
219			strmode(st->st_mode, mode);
220			if (remote) {
221			snprintf(ubuf, sizeof ubuf, "%u", (u_int)st->st_uid);
222			user = ubuf;
223			snprintf(gbuf, sizeof gbuf, "%u", (u_int)st->st_gid);
224			group = gbuf;
225			strlcpy(lc, "?", sizeof(lc));
226			} else {
227			user = user_from_uid(st->st_uid, 0);
228			group = group_from_gid(st->st_gid, 0);
229			snprintf(lc, sizeof(lc), "%u", (u_int)st->st_nlink);
230			}
231			if (ltime != NULL) {
232			now = time(NULL);
233			if (now - (3652460*60)/2 < st->st_mtime &&
234			now >= st->st_mtime)
235			sz = strftime(tbuf, sizeof tbuf, "%b %e %H:%M", ltime);
236			else
237			sz = strftime(tbuf, sizeof tbuf, "%b %e %Y", ltime);
238			}
239			if (sz == 0)
240			tbuf[0] = '\0';
241			ulen = MAXIMUM(strlen(user), 8);
242			glen = MAXIMUM(strlen(group), 8);
243			if (si_units) {
244			fmt_scaled((long long)st->st_size, sbuf);
245			snprintf(buf, sizeof buf, "%s %3s %-s %-s %8s %s %s",
246			mode, lc, ulen, user, glen, group,
247			sbuf, tbuf, name);
248			} else {
249			snprintf(buf, sizeof buf, "%s %3s %-s %-s %8llu %s %s",
250			mode, lc, ulen, user, glen, group,
251			(unsigned long long)st->st_size, tbuf, name);
252			}
253			return xstrdup(buf);
254			}