diff options
author | Colin Watson <cjwatson@debian.org> | 2008-07-22 19:45:18 +0000 |
---|---|---|
committer | Colin Watson <cjwatson@debian.org> | 2008-07-22 19:45:18 +0000 |
commit | 137d76ba65883aa8143af1fcad83b57e7badef0c (patch) | |
tree | f426e804bb5248ceafedfab7bb78ae6e6752942c /openbsd-compat/fmt_scaled.c | |
parent | dac7d049dad31f5f84d421d4eb628a7e13f977d7 (diff) | |
parent | ef94e5613d37bcbf880f21ee6094e4b1c7683a4c (diff) |
* New upstream release (closes: #474301). Important changes not previously
backported to 4.7p1:
- 4.9/4.9p1 (http://www.openssh.com/txt/release-4.9):
+ Added chroot(2) support for sshd(8), controlled by a new option
"ChrootDirectory" (closes: #139047, LP: #24777).
+ Linked sftp-server(8) into sshd(8). The internal sftp server is used
when the command "internal-sftp" is specified in a Subsystem or
ForceCommand declaration. When used with ChrootDirectory, the
internal sftp server requires no special configuration of files
inside the chroot environment.
+ Added a protocol extension method "posix-rename@openssh.com" for
sftp-server(8) to perform POSIX atomic rename() operations; sftp(1)
prefers this if available (closes: #308561).
+ Removed the fixed limit of 100 file handles in sftp-server(8).
+ ssh(8) will now skip generation of SSH protocol 1 ephemeral server
keys when in inetd mode and protocol 2 connections are negotiated.
This speeds up protocol 2 connections to inetd-mode servers that
also allow Protocol 1.
+ Accept the PermitRootLogin directive in a sshd_config(5) Match
block. Allows for, e.g. permitting root only from the local network.
+ Reworked sftp(1) argument splitting and escaping to be more
internally consistent (i.e. between sftp commands) and more
consistent with sh(1). Please note that this will change the
interpretation of some quoted strings, especially those with
embedded backslash escape sequences.
+ Support "Banner=none" in sshd_config(5) to disable sending of a
pre-login banner (e.g. in a Match block).
+ ssh(1) ProxyCommands are now executed with $SHELL rather than
/bin/sh.
+ ssh(1)'s ConnectTimeout option is now applied to both the TCP
connection and the SSH banner exchange (previously it just covered
the TCP connection). This allows callers of ssh(1) to better detect
and deal with stuck servers that accept a TCP connection but don't
progress the protocol, and also makes ConnectTimeout useful for
connections via a ProxyCommand.
+ scp(1) incorrectly reported "stalled" on slow copies (closes:
#140828).
+ scp(1) date underflow for timestamps before epoch.
+ ssh(1) used the obsolete SIG DNS RRtype for host keys in DNS,
instead of the current standard RRSIG.
+ Correctly drain ACKs when a sftp(1) upload write fails midway,
avoids a fatal() exit from what should be a recoverable condition.
+ Fixed ssh-keygen(1) selective host key hashing (i.e. "ssh-keygen -HF
hostname") to not include any IP address in the data to be hashed.
+ Make ssh(1) skip listening on the IPv6 wildcard address when a
binding address of 0.0.0.0 is used against an old SSH server that
does not support the RFC4254 syntax for wildcard bind addresses.
+ Enable IPV6_V6ONLY socket option on sshd(8) listen socket, as is
already done for X11/TCP forwarding sockets (closes: #439661).
+ Fix FD leak that could hang a ssh(1) connection multiplexing master.
+ Make ssh(1) -q option documentation consistent with reality.
+ Fixed sshd(8) PAM support not calling pam_session_close(), or
failing to call it with root privileges (closes: #372680).
+ Fix activation of OpenSSL engine support when requested in configure
(LP: #119295).
- 5.1/5.1p1 (http://www.openssh.com/txt/release-5.1):
+ Introduce experimental SSH Fingerprint ASCII Visualisation to ssh(1)
and ssh-keygen(1). Visual fingerprint display is controlled by a new
ssh_config(5) option "VisualHostKey". The intent is to render SSH
host keys in a visual form that is amenable to easy recall and
rejection of changed host keys.
+ sshd_config(5) now supports CIDR address/masklen matching in "Match
address" blocks, with a fallback to classic wildcard matching.
+ sshd(8) now supports CIDR matching in ~/.ssh/authorized_keys
from="..." restrictions, also with a fallback to classic wildcard
matching.
+ Added an extended test mode (-T) to sshd(8) to request that it write
its effective configuration to stdout and exit. Extended test mode
also supports the specification of connection parameters (username,
source address and hostname) to test the application of
sshd_config(5) Match rules.
+ ssh(1) now prints the number of bytes transferred and the overall
connection throughput for SSH protocol 2 sessions when in verbose
mode (previously these statistics were displayed for protocol 1
connections only).
+ sftp-server(8) now supports extension methods statvfs@openssh.com
and fstatvfs@openssh.com that implement statvfs(2)-like operations.
+ sftp(1) now has a "df" command to the sftp client that uses the
statvfs@openssh.com to produce a df(1)-like display of filesystem
space and inode utilisation (requires statvfs@openssh.com support on
the server).
+ Added a MaxSessions option to sshd_config(5) to allow control of the
number of multiplexed sessions supported over a single TCP
connection. This allows increasing the number of allowed sessions
above the previous default of 10, disabling connection multiplexing
(MaxSessions=1) or disallowing login/shell/subsystem sessions
entirely (MaxSessions=0).
+ Added a no-more-sessions@openssh.com global request extension that
is sent from ssh(1) to sshd(8) when the client knows that it will
never request another session (i.e. when session multiplexing is
disabled). This allows a server to disallow further session requests
and terminate the session in cases where the client has been
hijacked.
+ ssh-keygen(1) now supports the use of the -l option in combination
with -F to search for a host in ~/.ssh/known_hosts and display its
fingerprint.
+ ssh-keyscan(1) now defaults to "rsa" (protocol 2) keys, instead of
"rsa1".
+ Added an AllowAgentForwarding option to sshd_config(8) to control
whether authentication agent forwarding is permitted. Note that this
is a loose control, as a client may install their own unofficial
forwarder.
+ ssh(1) and sshd(8): avoid unnecessary malloc/copy/free when
receiving network data, resulting in a ~10% speedup.
+ ssh(1) and sshd(8) will now try additional addresses when connecting
to a port forward destination whose DNS name resolves to more than
one address. The previous behaviour was to try the only first
address and give up if that failed.
+ ssh(1) and sshd(8) now support signalling that channels are
half-closed for writing, through a channel protocol extension
notification "eow@openssh.com". This allows propagation of closed
file descriptors, so that commands such as "ssh -2 localhost od
/bin/ls | true" do not send unnecessary data over the wire.
+ sshd(8): increased the default size of ssh protocol 1 ephemeral keys
from 768 to 1024 bits.
+ When ssh(1) has been requested to fork after authentication ("ssh
-f") with ExitOnForwardFailure enabled, delay the fork until after
replies for any -R forwards have been seen. Allows for robust
detection of -R forward failure when using -f.
+ "Match group" blocks in sshd_config(5) now support negation of
groups. E.g. "Match group staff,!guests".
+ sftp(1) and sftp-server(8) now allow chmod-like operations to set
set[ug]id/sticky bits.
+ The MaxAuthTries option is now permitted in sshd_config(5) match
blocks.
+ Multiplexed ssh(1) sessions now support a subset of the ~ escapes
that are available to a primary connection.
+ ssh(1) connection multiplexing will now fall back to creating a new
connection in most error cases (closes: #352830).
+ Make ssh(1) deal more gracefully with channel requests that fail.
Previously it would optimistically assume that requests would always
succeed, which could cause hangs if they did not (e.g. when the
server runs out of file descriptors).
+ ssh(1) now reports multiplexing errors via the multiplex slave's
stderr where possible (subject to LogLevel in the mux master).
+ Prevent sshd(8) from erroneously applying public key restrictions
leaned from ~/.ssh/authorized_keys to other authentication methods
when public key authentication subsequently fails (LP: #161047).
+ Fixed an UMAC alignment problem that manifested on Itanium
platforms.
Diffstat (limited to 'openbsd-compat/fmt_scaled.c')
-rw-r--r-- | openbsd-compat/fmt_scaled.c | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/openbsd-compat/fmt_scaled.c b/openbsd-compat/fmt_scaled.c new file mode 100644 index 000000000..edd682a49 --- /dev/null +++ b/openbsd-compat/fmt_scaled.c | |||
@@ -0,0 +1,274 @@ | |||
1 | /* $OpenBSD: fmt_scaled.c,v 1.9 2007/03/20 03:42:52 tedu Exp $ */ | ||
2 | |||
3 | /* | ||
4 | * Copyright (c) 2001, 2002, 2003 Ian F. Darwin. 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 | * 3. The name of the author may not be used to endorse or promote products | ||
15 | * derived from this software without specific prior written permission. | ||
16 | * | ||
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | ||
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | ||
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | ||
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | ||
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | ||
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | ||
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
27 | */ | ||
28 | |||
29 | /* OPENBSD ORIGINAL: lib/libutil/fmt_scaled.c */ | ||
30 | |||
31 | /* | ||
32 | * fmt_scaled: Format numbers scaled for human comprehension | ||
33 | * scan_scaled: Scan numbers in this format. | ||
34 | * | ||
35 | * "Human-readable" output uses 4 digits max, and puts a unit suffix at | ||
36 | * the end. Makes output compact and easy-to-read esp. on huge disks. | ||
37 | * Formatting code was originally in OpenBSD "df", converted to library routine. | ||
38 | * Scanning code written for OpenBSD libutil. | ||
39 | */ | ||
40 | |||
41 | #include "includes.h" | ||
42 | |||
43 | #ifndef HAVE_FMT_SCALED | ||
44 | |||
45 | #include <stdio.h> | ||
46 | #include <stdlib.h> | ||
47 | #include <errno.h> | ||
48 | #include <string.h> | ||
49 | #include <ctype.h> | ||
50 | #include <limits.h> | ||
51 | |||
52 | typedef enum { | ||
53 | NONE = 0, KILO = 1, MEGA = 2, GIGA = 3, TERA = 4, PETA = 5, EXA = 6 | ||
54 | } unit_type; | ||
55 | |||
56 | /* These three arrays MUST be in sync! XXX make a struct */ | ||
57 | static unit_type units[] = { NONE, KILO, MEGA, GIGA, TERA, PETA, EXA }; | ||
58 | static char scale_chars[] = "BKMGTPE"; | ||
59 | static long long scale_factors[] = { | ||
60 | 1LL, | ||
61 | 1024LL, | ||
62 | 1024LL*1024, | ||
63 | 1024LL*1024*1024, | ||
64 | 1024LL*1024*1024*1024, | ||
65 | 1024LL*1024*1024*1024*1024, | ||
66 | 1024LL*1024*1024*1024*1024*1024, | ||
67 | }; | ||
68 | #define SCALE_LENGTH (sizeof(units)/sizeof(units[0])) | ||
69 | |||
70 | #define MAX_DIGITS (SCALE_LENGTH * 3) /* XXX strlen(sprintf("%lld", -1)? */ | ||
71 | |||
72 | /** Convert the given input string "scaled" into numeric in "result". | ||
73 | * Return 0 on success, -1 and errno set on error. | ||
74 | */ | ||
75 | int | ||
76 | scan_scaled(char *scaled, long long *result) | ||
77 | { | ||
78 | char *p = scaled; | ||
79 | int sign = 0; | ||
80 | unsigned int i, ndigits = 0, fract_digits = 0; | ||
81 | long long scale_fact = 1, whole = 0, fpart = 0; | ||
82 | |||
83 | /* Skip leading whitespace */ | ||
84 | while (isascii(*p) && isspace(*p)) | ||
85 | ++p; | ||
86 | |||
87 | /* Then at most one leading + or - */ | ||
88 | while (*p == '-' || *p == '+') { | ||
89 | if (*p == '-') { | ||
90 | if (sign) { | ||
91 | errno = EINVAL; | ||
92 | return -1; | ||
93 | } | ||
94 | sign = -1; | ||
95 | ++p; | ||
96 | } else if (*p == '+') { | ||
97 | if (sign) { | ||
98 | errno = EINVAL; | ||
99 | return -1; | ||
100 | } | ||
101 | sign = +1; | ||
102 | ++p; | ||
103 | } | ||
104 | } | ||
105 | |||
106 | /* Main loop: Scan digits, find decimal point, if present. | ||
107 | * We don't allow exponentials, so no scientific notation | ||
108 | * (but note that E for Exa might look like e to some!). | ||
109 | * Advance 'p' to end, to get scale factor. | ||
110 | */ | ||
111 | for (; isascii(*p) && (isdigit(*p) || *p=='.'); ++p) { | ||
112 | if (*p == '.') { | ||
113 | if (fract_digits > 0) { /* oops, more than one '.' */ | ||
114 | errno = EINVAL; | ||
115 | return -1; | ||
116 | } | ||
117 | fract_digits = 1; | ||
118 | continue; | ||
119 | } | ||
120 | |||
121 | i = (*p) - '0'; /* whew! finally a digit we can use */ | ||
122 | if (fract_digits > 0) { | ||
123 | if (fract_digits >= MAX_DIGITS-1) | ||
124 | /* ignore extra fractional digits */ | ||
125 | continue; | ||
126 | fract_digits++; /* for later scaling */ | ||
127 | fpart *= 10; | ||
128 | fpart += i; | ||
129 | } else { /* normal digit */ | ||
130 | if (++ndigits >= MAX_DIGITS) { | ||
131 | errno = ERANGE; | ||
132 | return -1; | ||
133 | } | ||
134 | whole *= 10; | ||
135 | whole += i; | ||
136 | } | ||
137 | } | ||
138 | |||
139 | if (sign) { | ||
140 | whole *= sign; | ||
141 | fpart *= sign; | ||
142 | } | ||
143 | |||
144 | /* If no scale factor given, we're done. fraction is discarded. */ | ||
145 | if (!*p) { | ||
146 | *result = whole; | ||
147 | return 0; | ||
148 | } | ||
149 | |||
150 | /* Validate scale factor, and scale whole and fraction by it. */ | ||
151 | for (i = 0; i < SCALE_LENGTH; i++) { | ||
152 | |||
153 | /** Are we there yet? */ | ||
154 | if (*p == scale_chars[i] || | ||
155 | *p == tolower(scale_chars[i])) { | ||
156 | |||
157 | /* If it ends with alphanumerics after the scale char, bad. */ | ||
158 | if (isalnum(*(p+1))) { | ||
159 | errno = EINVAL; | ||
160 | return -1; | ||
161 | } | ||
162 | scale_fact = scale_factors[i]; | ||
163 | |||
164 | /* scale whole part */ | ||
165 | whole *= scale_fact; | ||
166 | |||
167 | /* truncate fpart so it does't overflow. | ||
168 | * then scale fractional part. | ||
169 | */ | ||
170 | while (fpart >= LLONG_MAX / scale_fact) { | ||
171 | fpart /= 10; | ||
172 | fract_digits--; | ||
173 | } | ||
174 | fpart *= scale_fact; | ||
175 | if (fract_digits > 0) { | ||
176 | for (i = 0; i < fract_digits -1; i++) | ||
177 | fpart /= 10; | ||
178 | } | ||
179 | whole += fpart; | ||
180 | *result = whole; | ||
181 | return 0; | ||
182 | } | ||
183 | } | ||
184 | errno = ERANGE; | ||
185 | return -1; | ||
186 | } | ||
187 | |||
188 | /* Format the given "number" into human-readable form in "result". | ||
189 | * Result must point to an allocated buffer of length FMT_SCALED_STRSIZE. | ||
190 | * Return 0 on success, -1 and errno set if error. | ||
191 | */ | ||
192 | int | ||
193 | fmt_scaled(long long number, char *result) | ||
194 | { | ||
195 | long long abval, fract = 0; | ||
196 | unsigned int i; | ||
197 | unit_type unit = NONE; | ||
198 | |||
199 | abval = (number < 0LL) ? -number : number; /* no long long_abs yet */ | ||
200 | |||
201 | /* Not every negative long long has a positive representation. | ||
202 | * Also check for numbers that are just too darned big to format | ||
203 | */ | ||
204 | if (abval < 0 || abval / 1024 >= scale_factors[SCALE_LENGTH-1]) { | ||
205 | errno = ERANGE; | ||
206 | return -1; | ||
207 | } | ||
208 | |||
209 | /* scale whole part; get unscaled fraction */ | ||
210 | for (i = 0; i < SCALE_LENGTH; i++) { | ||
211 | if (abval/1024 < scale_factors[i]) { | ||
212 | unit = units[i]; | ||
213 | fract = (i == 0) ? 0 : abval % scale_factors[i]; | ||
214 | number /= scale_factors[i]; | ||
215 | if (i > 0) | ||
216 | fract /= scale_factors[i - 1]; | ||
217 | break; | ||
218 | } | ||
219 | } | ||
220 | |||
221 | fract = (10 * fract + 512) / 1024; | ||
222 | /* if the result would be >= 10, round main number */ | ||
223 | if (fract == 10) { | ||
224 | if (number >= 0) | ||
225 | number++; | ||
226 | else | ||
227 | number--; | ||
228 | fract = 0; | ||
229 | } | ||
230 | |||
231 | if (number == 0) | ||
232 | strlcpy(result, "0B", FMT_SCALED_STRSIZE); | ||
233 | else if (unit == NONE || number >= 100 || number <= -100) { | ||
234 | if (fract >= 5) { | ||
235 | if (number >= 0) | ||
236 | number++; | ||
237 | else | ||
238 | number--; | ||
239 | } | ||
240 | (void)snprintf(result, FMT_SCALED_STRSIZE, "%lld%c", | ||
241 | number, scale_chars[unit]); | ||
242 | } else | ||
243 | (void)snprintf(result, FMT_SCALED_STRSIZE, "%lld.%1lld%c", | ||
244 | number, fract, scale_chars[unit]); | ||
245 | |||
246 | return 0; | ||
247 | } | ||
248 | |||
249 | #ifdef MAIN | ||
250 | /* | ||
251 | * This is the original version of the program in the man page. | ||
252 | * Copy-and-paste whatever you need from it. | ||
253 | */ | ||
254 | int | ||
255 | main(int argc, char **argv) | ||
256 | { | ||
257 | char *cinput = "1.5K", buf[FMT_SCALED_STRSIZE]; | ||
258 | long long ninput = 10483892, result; | ||
259 | |||
260 | if (scan_scaled(cinput, &result) == 0) | ||
261 | printf("\"%s\" -> %lld\n", cinput, result); | ||
262 | else | ||
263 | perror(cinput); | ||
264 | |||
265 | if (fmt_scaled(ninput, buf) == 0) | ||
266 | printf("%lld -> \"%s\"\n", ninput, buf); | ||
267 | else | ||
268 | fprintf(stderr, "%lld invalid (%s)\n", ninput, strerror(errno)); | ||
269 | |||
270 | return 0; | ||
271 | } | ||
272 | #endif | ||
273 | |||
274 | #endif /* HAVE_FMT_SCALED */ | ||