1 /* $OpenBSD: misc.c,v 1.105 2016/07/15 00:24:30 djm Exp $ */
3 * Copyright (c) 2000 Markus Friedl. All rights reserved.
4 * Copyright (c) 2005,2006 Damien Miller. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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.
29 #include <sys/types.h>
30 #include <sys/ioctl.h>
31 #include <sys/socket.h>
43 #include <netinet/in.h>
44 #include <netinet/in_systm.h>
45 #include <netinet/ip.h>
46 #include <netinet/tcp.h>
56 #ifdef SSH_TUN_OPENBSD
65 /* remove newline at end of string */
71 if (*t
== '\n' || *t
== '\r') {
81 /* set/unset filedescriptor to non-blocking */
87 val
= fcntl(fd
, F_GETFL
);
89 error("fcntl(%d, F_GETFL): %s", fd
, strerror(errno
));
92 if (val
& O_NONBLOCK
) {
93 debug3("fd %d is O_NONBLOCK", fd
);
96 debug2("fd %d setting O_NONBLOCK", fd
);
98 if (fcntl(fd
, F_SETFL
, val
) == -1) {
99 debug("fcntl(%d, F_SETFL, O_NONBLOCK): %s", fd
,
107 unset_nonblock(int fd
)
111 val
= fcntl(fd
, F_GETFL
);
113 error("fcntl(%d, F_GETFL): %s", fd
, strerror(errno
));
116 if (!(val
& O_NONBLOCK
)) {
117 debug3("fd %d is not O_NONBLOCK", fd
);
120 debug("fd %d clearing O_NONBLOCK", fd
);
122 if (fcntl(fd
, F_SETFL
, val
) == -1) {
123 debug("fcntl(%d, F_SETFL, ~O_NONBLOCK): %s",
124 fd
, strerror(errno
));
131 ssh_gai_strerror(int gaierr
)
133 if (gaierr
== EAI_SYSTEM
&& errno
!= 0)
134 return strerror(errno
);
135 return gai_strerror(gaierr
);
138 /* disable nagle on socket */
146 if (getsockopt(fd
, IPPROTO_TCP
, TCP_NODELAY
, &opt
, &optlen
) == -1) {
147 debug("getsockopt TCP_NODELAY: %.100s", strerror(errno
));
151 debug2("fd %d is TCP_NODELAY", fd
);
155 debug2("fd %d setting TCP_NODELAY", fd
);
156 if (setsockopt(fd
, IPPROTO_TCP
, TCP_NODELAY
, &opt
, sizeof opt
) == -1)
157 error("setsockopt TCP_NODELAY: %.100s", strerror(errno
));
160 /* Characters considered whitespace in strsep calls. */
161 #define WHITESPACE " \t\r\n"
164 /* return next token in configuration line */
176 *s
= strpbrk(*s
, WHITESPACE QUOTE
"=");
181 memmove(*s
, *s
+ 1, strlen(*s
)); /* move nul too */
182 /* Find matching quote */
183 if ((*s
= strpbrk(*s
, QUOTE
)) == NULL
) {
184 return (NULL
); /* no matching quote */
187 *s
+= strspn(*s
+ 1, WHITESPACE
) + 1;
192 /* Allow only one '=' to be skipped */
197 /* Skip any extra whitespace after first token */
198 *s
+= strspn(*s
+ 1, WHITESPACE
) + 1;
199 if (*s
[0] == '=' && !wspace
)
200 *s
+= strspn(*s
+ 1, WHITESPACE
) + 1;
206 pwcopy(struct passwd
*pw
)
208 struct passwd
*copy
= xcalloc(1, sizeof(*copy
));
210 copy
->pw_name
= xstrdup(pw
->pw_name
);
211 copy
->pw_passwd
= xstrdup(pw
->pw_passwd
);
212 #ifdef HAVE_STRUCT_PASSWD_PW_GECOS
213 copy
->pw_gecos
= xstrdup(pw
->pw_gecos
);
215 copy
->pw_uid
= pw
->pw_uid
;
216 copy
->pw_gid
= pw
->pw_gid
;
217 #ifdef HAVE_STRUCT_PASSWD_PW_EXPIRE
218 copy
->pw_expire
= pw
->pw_expire
;
220 #ifdef HAVE_STRUCT_PASSWD_PW_CHANGE
221 copy
->pw_change
= pw
->pw_change
;
223 #ifdef HAVE_STRUCT_PASSWD_PW_CLASS
224 copy
->pw_class
= xstrdup(pw
->pw_class
);
226 copy
->pw_dir
= xstrdup(pw
->pw_dir
);
227 copy
->pw_shell
= xstrdup(pw
->pw_shell
);
232 * Convert ASCII string to TCP/IP port number.
233 * Port must be >=0 and <=65535.
234 * Return -1 if invalid.
237 a2port(const char *s
)
242 port
= strtonum(s
, 0, 65535, &errstr
);
249 a2tun(const char *s
, int *remote
)
251 const char *errstr
= NULL
;
255 if (remote
!= NULL
) {
256 *remote
= SSH_TUNID_ANY
;
258 if ((ep
= strchr(sp
, ':')) == NULL
) {
260 return (a2tun(s
, NULL
));
263 *remote
= a2tun(ep
, NULL
);
264 tun
= a2tun(sp
, NULL
);
266 return (*remote
== SSH_TUNID_ERR
? *remote
: tun
);
269 if (strcasecmp(s
, "any") == 0)
270 return (SSH_TUNID_ANY
);
272 tun
= strtonum(s
, 0, SSH_TUNID_MAX
, &errstr
);
274 return (SSH_TUNID_ERR
);
280 #define MINUTES (SECONDS * 60)
281 #define HOURS (MINUTES * 60)
282 #define DAYS (HOURS * 24)
283 #define WEEKS (DAYS * 7)
286 * Convert a time string into seconds; format is
290 * Valid time qualifiers are:
304 * Return -1 if time string is invalid.
307 convtime(const char *s
)
317 if (p
== NULL
|| *p
== '\0')
321 secs
= strtol(p
, &endp
, 10);
323 (errno
== ERANGE
&& (secs
== LONG_MIN
|| secs
== LONG_MAX
)) ||
363 * Returns a standardized host+port identifier string.
364 * Caller must free returned string.
367 put_host_port(const char *host
, u_short port
)
371 if (port
== 0 || port
== SSH_DEFAULT_PORT
)
372 return(xstrdup(host
));
373 if (asprintf(&hoststr
, "[%s]:%d", host
, (int)port
) < 0)
374 fatal("put_host_port: asprintf: %s", strerror(errno
));
375 debug3("put_host_port: %s", hoststr
);
380 * Search for next delimiter between hostnames/addresses and ports.
381 * Argument may be modified (for termination).
382 * Returns *cp if parsing succeeds.
383 * *cp is set to the start of the next delimiter, if one was found.
384 * If this is the last field, *cp is set to NULL.
391 if (cp
== NULL
|| *cp
== NULL
)
396 if ((s
= strchr(s
, ']')) == NULL
)
400 } else if ((s
= strpbrk(s
, ":/")) == NULL
)
401 s
= *cp
+ strlen(*cp
); /* skip to end (see first case below) */
405 *cp
= NULL
; /* no more fields*/
410 *s
= '\0'; /* terminate */
422 cleanhostname(char *host
)
424 if (*host
== '[' && host
[strlen(host
) - 1] == ']') {
425 host
[strlen(host
) - 1] = '\0';
436 if (*cp
== ':') /* Leading colon is part of file name. */
442 if (*cp
== '@' && *(cp
+1) == '[')
444 if (*cp
== ']' && *(cp
+1) == ':' && flag
)
446 if (*cp
== ':' && !flag
)
455 * Parse a [user@]host[:port] string.
456 * Caller must free returned user and host.
457 * Any of the pointer return arguments may be NULL (useful for syntax checking).
458 * If user was not specified then *userp will be set to NULL.
459 * If port was not specified then *portp will be -1.
460 * Returns 0 on success, -1 on failure.
463 parse_user_host_port(const char *s
, char **userp
, char **hostp
, int *portp
)
465 char *sdup
, *cp
, *tmp
;
466 char *user
= NULL
, *host
= NULL
;
467 int port
= -1, ret
= -1;
476 if ((sdup
= tmp
= strdup(s
)) == NULL
)
478 /* Extract optional username */
479 if ((cp
= strchr(tmp
, '@')) != NULL
) {
483 if ((user
= strdup(tmp
)) == NULL
)
487 /* Extract mandatory hostname */
488 if ((cp
= hpdelim(&tmp
)) == NULL
|| *cp
== '\0')
490 host
= xstrdup(cleanhostname(cp
));
491 /* Convert and verify optional port */
492 if (tmp
!= NULL
&& *tmp
!= '\0') {
493 if ((port
= a2port(tmp
)) <= 0)
515 /* function to assist building execv() arguments */
517 addargs(arglist
*args
, char *fmt
, ...)
525 r
= vasprintf(&cp
, fmt
, ap
);
528 fatal("addargs: argument too long");
530 nalloc
= args
->nalloc
;
531 if (args
->list
== NULL
) {
534 } else if (args
->num
+2 >= nalloc
)
537 args
->list
= xreallocarray(args
->list
, nalloc
, sizeof(char *));
538 args
->nalloc
= nalloc
;
539 args
->list
[args
->num
++] = cp
;
540 args
->list
[args
->num
] = NULL
;
544 replacearg(arglist
*args
, u_int which
, char *fmt
, ...)
551 r
= vasprintf(&cp
, fmt
, ap
);
554 fatal("replacearg: argument too long");
556 if (which
>= args
->num
)
557 fatal("replacearg: tried to replace invalid arg %d >= %d",
559 free(args
->list
[which
]);
560 args
->list
[which
] = cp
;
564 freeargs(arglist
*args
)
568 if (args
->list
!= NULL
) {
569 for (i
= 0; i
< args
->num
; i
++)
572 args
->nalloc
= args
->num
= 0;
578 * Expands tildes in the file name. Returns data allocated by xmalloc.
579 * Warning: this calls getpw*.
582 tilde_expand_filename(const char *filename
, uid_t uid
)
584 const char *path
, *sep
;
585 char user
[128], *ret
;
589 if (*filename
!= '~')
590 return (xstrdup(filename
));
593 path
= strchr(filename
, '/');
594 if (path
!= NULL
&& path
> filename
) { /* ~user/path */
595 slash
= path
- filename
;
596 if (slash
> sizeof(user
) - 1)
597 fatal("tilde_expand_filename: ~username too long");
598 memcpy(user
, filename
, slash
);
600 if ((pw
= getpwnam(user
)) == NULL
)
601 fatal("tilde_expand_filename: No such user %s", user
);
602 } else if ((pw
= getpwuid(uid
)) == NULL
) /* ~/path */
603 fatal("tilde_expand_filename: No such uid %ld", (long)uid
);
605 /* Make sure directory has a trailing '/' */
606 len
= strlen(pw
->pw_dir
);
607 if (len
== 0 || pw
->pw_dir
[len
- 1] != '/')
612 /* Skip leading '/' from specified path */
616 if (xasprintf(&ret
, "%s%s%s", pw
->pw_dir
, sep
, filename
) >= PATH_MAX
)
617 fatal("tilde_expand_filename: Path too long");
623 * Expand a string with a set of %[char] escapes. A number of escapes may be
624 * specified as (char *escape_chars, char *replacement) pairs. The list must
625 * be terminated by a NULL escape_char. Returns replaced string in memory
626 * allocated by xmalloc.
629 percent_expand(const char *string
, ...)
631 #define EXPAND_MAX_KEYS 16
632 u_int num_keys
, i
, j
;
636 } keys
[EXPAND_MAX_KEYS
];
641 va_start(ap
, string
);
642 for (num_keys
= 0; num_keys
< EXPAND_MAX_KEYS
; num_keys
++) {
643 keys
[num_keys
].key
= va_arg(ap
, char *);
644 if (keys
[num_keys
].key
== NULL
)
646 keys
[num_keys
].repl
= va_arg(ap
, char *);
647 if (keys
[num_keys
].repl
== NULL
)
648 fatal("%s: NULL replacement", __func__
);
650 if (num_keys
== EXPAND_MAX_KEYS
&& va_arg(ap
, char *) != NULL
)
651 fatal("%s: too many keys", __func__
);
656 for (i
= 0; *string
!= '\0'; string
++) {
657 if (*string
!= '%') {
660 if (i
>= sizeof(buf
))
661 fatal("%s: string too long", __func__
);
670 fatal("%s: invalid format", __func__
);
671 for (j
= 0; j
< num_keys
; j
++) {
672 if (strchr(keys
[j
].key
, *string
) != NULL
) {
673 i
= strlcat(buf
, keys
[j
].repl
, sizeof(buf
));
674 if (i
>= sizeof(buf
))
675 fatal("%s: string too long", __func__
);
680 fatal("%s: unknown key %%%c", __func__
, *string
);
682 return (xstrdup(buf
));
683 #undef EXPAND_MAX_KEYS
687 * Read an entire line from a public key file into a static buffer, discarding
688 * lines that exceed the buffer size. Returns 0 on success, -1 on failure.
691 read_keyfile_line(FILE *f
, const char *filename
, char *buf
, size_t bufsz
,
694 while (fgets(buf
, bufsz
, f
) != NULL
) {
698 if (buf
[strlen(buf
) - 1] == '\n' || feof(f
)) {
701 debug("%s: %s line %lu exceeds size limit", __func__
,
703 /* discard remainder of line */
704 while (fgetc(f
) != '\n' && !feof(f
))
712 tun_open(int tun
, int mode
)
714 #if defined(CUSTOM_SYS_TUN_OPEN)
715 return (sys_tun_open(tun
, mode
));
716 #elif defined(SSH_TUN_OPENBSD)
720 const char *tunbase
= "tun";
722 if (mode
== SSH_TUNMODE_ETHERNET
)
725 /* Open the tunnel device */
726 if (tun
<= SSH_TUNID_MAX
) {
727 snprintf(name
, sizeof(name
), "/dev/%s%d", tunbase
, tun
);
728 fd
= open(name
, O_RDWR
);
729 } else if (tun
== SSH_TUNID_ANY
) {
730 for (tun
= 100; tun
>= 0; tun
--) {
731 snprintf(name
, sizeof(name
), "/dev/%s%d",
733 if ((fd
= open(name
, O_RDWR
)) >= 0)
737 debug("%s: invalid tunnel %u", __func__
, tun
);
742 debug("%s: %s open: %s", __func__
, name
, strerror(errno
));
746 debug("%s: %s mode %d fd %d", __func__
, name
, mode
, fd
);
748 /* Bring interface up if it is not already */
749 snprintf(ifr
.ifr_name
, sizeof(ifr
.ifr_name
), "%s%d", tunbase
, tun
);
750 if ((sock
= socket(PF_UNIX
, SOCK_STREAM
, 0)) == -1)
753 if (ioctl(sock
, SIOCGIFFLAGS
, &ifr
) == -1) {
754 debug("%s: get interface %s flags: %s", __func__
,
755 ifr
.ifr_name
, strerror(errno
));
759 if (!(ifr
.ifr_flags
& IFF_UP
)) {
760 ifr
.ifr_flags
|= IFF_UP
;
761 if (ioctl(sock
, SIOCSIFFLAGS
, &ifr
) == -1) {
762 debug("%s: activate interface %s: %s", __func__
,
763 ifr
.ifr_name
, strerror(errno
));
778 error("Tunnel interfaces are not supported on this platform");
788 if ((nullfd
= dupfd
= open(_PATH_DEVNULL
, O_RDWR
)) == -1) {
789 fprintf(stderr
, "Couldn't open /dev/null: %s\n",
793 while (++dupfd
<= STDERR_FILENO
) {
794 /* Only populate closed fds. */
795 if (fcntl(dupfd
, F_GETFL
) == -1 && errno
== EBADF
) {
796 if (dup2(nullfd
, dupfd
) == -1) {
797 fprintf(stderr
, "dup2: %s\n", strerror(errno
));
802 if (nullfd
> STDERR_FILENO
)
807 tohex(const void *vp
, size_t l
)
809 const u_char
*p
= (const u_char
*)vp
;
814 return xstrdup("tohex: length > 65536");
818 for (i
= 0; i
< l
; i
++) {
819 snprintf(b
, sizeof(b
), "%02x", p
[i
]);
826 get_u64(const void *vp
)
828 const u_char
*p
= (const u_char
*)vp
;
831 v
= (u_int64_t
)p
[0] << 56;
832 v
|= (u_int64_t
)p
[1] << 48;
833 v
|= (u_int64_t
)p
[2] << 40;
834 v
|= (u_int64_t
)p
[3] << 32;
835 v
|= (u_int64_t
)p
[4] << 24;
836 v
|= (u_int64_t
)p
[5] << 16;
837 v
|= (u_int64_t
)p
[6] << 8;
838 v
|= (u_int64_t
)p
[7];
844 get_u32(const void *vp
)
846 const u_char
*p
= (const u_char
*)vp
;
849 v
= (u_int32_t
)p
[0] << 24;
850 v
|= (u_int32_t
)p
[1] << 16;
851 v
|= (u_int32_t
)p
[2] << 8;
852 v
|= (u_int32_t
)p
[3];
858 get_u32_le(const void *vp
)
860 const u_char
*p
= (const u_char
*)vp
;
864 v
|= (u_int32_t
)p
[1] << 8;
865 v
|= (u_int32_t
)p
[2] << 16;
866 v
|= (u_int32_t
)p
[3] << 24;
872 get_u16(const void *vp
)
874 const u_char
*p
= (const u_char
*)vp
;
877 v
= (u_int16_t
)p
[0] << 8;
878 v
|= (u_int16_t
)p
[1];
884 put_u64(void *vp
, u_int64_t v
)
886 u_char
*p
= (u_char
*)vp
;
888 p
[0] = (u_char
)(v
>> 56) & 0xff;
889 p
[1] = (u_char
)(v
>> 48) & 0xff;
890 p
[2] = (u_char
)(v
>> 40) & 0xff;
891 p
[3] = (u_char
)(v
>> 32) & 0xff;
892 p
[4] = (u_char
)(v
>> 24) & 0xff;
893 p
[5] = (u_char
)(v
>> 16) & 0xff;
894 p
[6] = (u_char
)(v
>> 8) & 0xff;
895 p
[7] = (u_char
)v
& 0xff;
899 put_u32(void *vp
, u_int32_t v
)
901 u_char
*p
= (u_char
*)vp
;
903 p
[0] = (u_char
)(v
>> 24) & 0xff;
904 p
[1] = (u_char
)(v
>> 16) & 0xff;
905 p
[2] = (u_char
)(v
>> 8) & 0xff;
906 p
[3] = (u_char
)v
& 0xff;
910 put_u32_le(void *vp
, u_int32_t v
)
912 u_char
*p
= (u_char
*)vp
;
914 p
[0] = (u_char
)v
& 0xff;
915 p
[1] = (u_char
)(v
>> 8) & 0xff;
916 p
[2] = (u_char
)(v
>> 16) & 0xff;
917 p
[3] = (u_char
)(v
>> 24) & 0xff;
921 put_u16(void *vp
, u_int16_t v
)
923 u_char
*p
= (u_char
*)vp
;
925 p
[0] = (u_char
)(v
>> 8) & 0xff;
926 p
[1] = (u_char
)v
& 0xff;
930 ms_subtract_diff(struct timeval
*start
, int *ms
)
932 struct timeval diff
, finish
;
934 gettimeofday(&finish
, NULL
);
935 timersub(&finish
, start
, &diff
);
936 *ms
-= (diff
.tv_sec
* 1000) + (diff
.tv_usec
/ 1000);
940 ms_to_timeval(struct timeval
*tv
, int ms
)
944 tv
->tv_sec
= ms
/ 1000;
945 tv
->tv_usec
= (ms
% 1000) * 1000;
951 #if defined(HAVE_CLOCK_GETTIME) && \
952 (defined(CLOCK_MONOTONIC) || defined(CLOCK_BOOTTIME))
954 static int gettime_failed
= 0;
956 if (!gettime_failed
) {
957 #if defined(CLOCK_BOOTTIME)
958 if (clock_gettime(CLOCK_BOOTTIME
, &ts
) == 0)
961 #if defined(CLOCK_MONOTONIC)
962 if (clock_gettime(CLOCK_MONOTONIC
, &ts
) == 0)
965 debug3("clock_gettime: %s", strerror(errno
));
968 #endif /* HAVE_CLOCK_GETTIME && (CLOCK_MONOTONIC || CLOCK_BOOTTIME */
974 monotime_double(void)
976 #if defined(HAVE_CLOCK_GETTIME) && \
977 (defined(CLOCK_MONOTONIC) || defined(CLOCK_BOOTTIME))
979 static int gettime_failed
= 0;
981 if (!gettime_failed
) {
982 #if defined(CLOCK_BOOTTIME)
983 if (clock_gettime(CLOCK_BOOTTIME
, &ts
) == 0)
984 return (ts
.tv_sec
+ (double)ts
.tv_nsec
/ 1000000000);
986 #if defined(CLOCK_MONOTONIC)
987 if (clock_gettime(CLOCK_MONOTONIC
, &ts
) == 0)
988 return (ts
.tv_sec
+ (double)ts
.tv_nsec
/ 1000000000);
990 debug3("clock_gettime: %s", strerror(errno
));
993 #endif /* HAVE_CLOCK_GETTIME && (CLOCK_MONOTONIC || CLOCK_BOOTTIME */
995 return (double)time(NULL
);
999 bandwidth_limit_init(struct bwlimit
*bw
, u_int64_t kbps
, size_t buflen
)
1001 bw
->buflen
= buflen
;
1003 bw
->thresh
= bw
->rate
;
1005 timerclear(&bw
->bwstart
);
1006 timerclear(&bw
->bwend
);
1009 /* Callback from read/write loop to insert bandwidth-limiting delays */
1011 bandwidth_limit(struct bwlimit
*bw
, size_t read_len
)
1014 struct timespec ts
, rm
;
1016 if (!timerisset(&bw
->bwstart
)) {
1017 gettimeofday(&bw
->bwstart
, NULL
);
1021 bw
->lamt
+= read_len
;
1022 if (bw
->lamt
< bw
->thresh
)
1025 gettimeofday(&bw
->bwend
, NULL
);
1026 timersub(&bw
->bwend
, &bw
->bwstart
, &bw
->bwend
);
1027 if (!timerisset(&bw
->bwend
))
1031 waitlen
= (double)1000000L * bw
->lamt
/ bw
->rate
;
1033 bw
->bwstart
.tv_sec
= waitlen
/ 1000000L;
1034 bw
->bwstart
.tv_usec
= waitlen
% 1000000L;
1036 if (timercmp(&bw
->bwstart
, &bw
->bwend
, >)) {
1037 timersub(&bw
->bwstart
, &bw
->bwend
, &bw
->bwend
);
1039 /* Adjust the wait time */
1040 if (bw
->bwend
.tv_sec
) {
1042 if (bw
->thresh
< bw
->buflen
/ 4)
1043 bw
->thresh
= bw
->buflen
/ 4;
1044 } else if (bw
->bwend
.tv_usec
< 10000) {
1046 if (bw
->thresh
> bw
->buflen
* 8)
1047 bw
->thresh
= bw
->buflen
* 8;
1050 TIMEVAL_TO_TIMESPEC(&bw
->bwend
, &ts
);
1051 while (nanosleep(&ts
, &rm
) == -1) {
1059 gettimeofday(&bw
->bwstart
, NULL
);
1062 /* Make a template filename for mk[sd]temp() */
1064 mktemp_proto(char *s
, size_t len
)
1069 if ((tmpdir
= getenv("TMPDIR")) != NULL
) {
1070 r
= snprintf(s
, len
, "%s/ssh-XXXXXXXXXXXX", tmpdir
);
1071 if (r
> 0 && (size_t)r
< len
)
1074 r
= snprintf(s
, len
, "/tmp/ssh-XXXXXXXXXXXX");
1075 if (r
< 0 || (size_t)r
>= len
)
1076 fatal("%s: template string too short", __func__
);
1079 static const struct {
1083 { "af11", IPTOS_DSCP_AF11
},
1084 { "af12", IPTOS_DSCP_AF12
},
1085 { "af13", IPTOS_DSCP_AF13
},
1086 { "af21", IPTOS_DSCP_AF21
},
1087 { "af22", IPTOS_DSCP_AF22
},
1088 { "af23", IPTOS_DSCP_AF23
},
1089 { "af31", IPTOS_DSCP_AF31
},
1090 { "af32", IPTOS_DSCP_AF32
},
1091 { "af33", IPTOS_DSCP_AF33
},
1092 { "af41", IPTOS_DSCP_AF41
},
1093 { "af42", IPTOS_DSCP_AF42
},
1094 { "af43", IPTOS_DSCP_AF43
},
1095 { "cs0", IPTOS_DSCP_CS0
},
1096 { "cs1", IPTOS_DSCP_CS1
},
1097 { "cs2", IPTOS_DSCP_CS2
},
1098 { "cs3", IPTOS_DSCP_CS3
},
1099 { "cs4", IPTOS_DSCP_CS4
},
1100 { "cs5", IPTOS_DSCP_CS5
},
1101 { "cs6", IPTOS_DSCP_CS6
},
1102 { "cs7", IPTOS_DSCP_CS7
},
1103 { "ef", IPTOS_DSCP_EF
},
1104 { "lowdelay", IPTOS_LOWDELAY
},
1105 { "throughput", IPTOS_THROUGHPUT
},
1106 { "reliability", IPTOS_RELIABILITY
},
1111 parse_ipqos(const char *cp
)
1119 for (i
= 0; ipqos
[i
].name
!= NULL
; i
++) {
1120 if (strcasecmp(cp
, ipqos
[i
].name
) == 0)
1121 return ipqos
[i
].value
;
1123 /* Try parsing as an integer */
1124 val
= strtol(cp
, &ep
, 0);
1125 if (*cp
== '\0' || *ep
!= '\0' || val
< 0 || val
> 255)
1131 iptos2str(int iptos
)
1134 static char iptos_str
[sizeof "0xff"];
1136 for (i
= 0; ipqos
[i
].name
!= NULL
; i
++) {
1137 if (ipqos
[i
].value
== iptos
)
1138 return ipqos
[i
].name
;
1140 snprintf(iptos_str
, sizeof iptos_str
, "0x%02x", iptos
);
1148 *s
= tolower((u_char
)*s
);
1152 unix_listener(const char *path
, int backlog
, int unlink_first
)
1154 struct sockaddr_un sunaddr
;
1155 int saved_errno
, sock
;
1157 memset(&sunaddr
, 0, sizeof(sunaddr
));
1158 sunaddr
.sun_family
= AF_UNIX
;
1159 if (strlcpy(sunaddr
.sun_path
, path
, sizeof(sunaddr
.sun_path
)) >= sizeof(sunaddr
.sun_path
)) {
1160 error("%s: \"%s\" too long for Unix domain socket", __func__
,
1162 errno
= ENAMETOOLONG
;
1166 sock
= socket(PF_UNIX
, SOCK_STREAM
, 0);
1168 saved_errno
= errno
;
1169 error("socket: %.100s", strerror(errno
));
1170 errno
= saved_errno
;
1173 if (unlink_first
== 1) {
1174 if (unlink(path
) != 0 && errno
!= ENOENT
)
1175 error("unlink(%s): %.100s", path
, strerror(errno
));
1177 if (bind(sock
, (struct sockaddr
*)&sunaddr
, sizeof(sunaddr
)) < 0) {
1178 saved_errno
= errno
;
1179 error("bind: %.100s", strerror(errno
));
1181 error("%s: cannot bind to path: %s", __func__
, path
);
1182 errno
= saved_errno
;
1185 if (listen(sock
, backlog
) < 0) {
1186 saved_errno
= errno
;
1187 error("listen: %.100s", strerror(errno
));
1190 error("%s: cannot listen on path: %s", __func__
, path
);
1191 errno
= saved_errno
;
1198 sock_set_v6only(int s
)
1200 #if defined(IPV6_V6ONLY) && !defined(__OpenBSD__)
1203 debug3("%s: set socket %d IPV6_V6ONLY", __func__
, s
);
1204 if (setsockopt(s
, IPPROTO_IPV6
, IPV6_V6ONLY
, &on
, sizeof(on
)) == -1)
1205 error("setsockopt IPV6_V6ONLY: %s", strerror(errno
));
1210 * Compares two strings that maybe be NULL. Returns non-zero if strings
1211 * are both NULL or are identical, returns zero otherwise.
1214 strcmp_maybe_null(const char *a
, const char *b
)
1216 if ((a
== NULL
&& b
!= NULL
) || (a
!= NULL
&& b
== NULL
))
1218 if (a
!= NULL
&& strcmp(a
, b
) != 0)
1224 * Compare two forwards, returning non-zero if they are identical or
1228 forward_equals(const struct Forward
*a
, const struct Forward
*b
)
1230 if (strcmp_maybe_null(a
->listen_host
, b
->listen_host
) == 0)
1232 if (a
->listen_port
!= b
->listen_port
)
1234 if (strcmp_maybe_null(a
->listen_path
, b
->listen_path
) == 0)
1236 if (strcmp_maybe_null(a
->connect_host
, b
->connect_host
) == 0)
1238 if (a
->connect_port
!= b
->connect_port
)
1240 if (strcmp_maybe_null(a
->connect_path
, b
->connect_path
) == 0)
1242 /* allocated_port and handle are not checked */