+/* $OpenBSD: misc.c,v 1.71 2009/02/21 19:32:04 tobias Exp $ */
/*
* Copyright (c) 2000 Markus Friedl. All rights reserved.
- * Copyright (c) 2005 Damien Miller. All rights reserved.
+ * Copyright (c) 2005,2006 Damien Miller. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
*/
#include "includes.h"
-RCSID("$OpenBSD: misc.c,v 1.42 2006/01/31 10:19:02 djm Exp $");
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/param.h>
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <netdb.h>
+#ifdef HAVE_PATHS_H
+# include <paths.h>
+#include <pwd.h>
+#endif
#ifdef SSH_TUN_OPENBSD
#include <net/if.h>
#endif
+#include "xmalloc.h"
#include "misc.h"
#include "log.h"
-#include "xmalloc.h"
+#include "ssh.h"
/* remove newline at end of string */
char *
return (0);
}
+const char *
+ssh_gai_strerror(int gaierr)
+{
+ if (gaierr == EAI_SYSTEM)
+ return strerror(errno);
+ return gai_strerror(gaierr);
+}
+
/* disable nagle on socket */
void
set_nodelay(int fd)
/* Characters considered whitespace in strsep calls. */
#define WHITESPACE " \t\r\n"
+#define QUOTE "\""
/* Characters considered as quotations. */
#define QUOTES "'\""
return (old);
}
- *s = strpbrk(*s, WHITESPACE "=");
+ *s = strpbrk(*s, WHITESPACE QUOTE "=");
if (*s == NULL)
return (old);
+ if (*s[0] == '\"') {
+ memmove(*s, *s + 1, strlen(*s)); /* move nul too */
+ /* Find matching quote */
+ if ((*s = strpbrk(*s, QUOTE)) == NULL) {
+ return (NULL); /* no matching quote */
+ } else {
+ *s[0] = '\0';
+ return (old);
+ }
+ }
+
/* Allow only one '=' to be skipped */
if (*s[0] == '=')
wspace = 1;
*s[0] = '\0';
+ /* Skip any extra whitespace after first token */
*s += strspn(*s + 1, WHITESPACE) + 1;
if (*s[0] == '=' && !wspace)
*s += strspn(*s + 1, WHITESPACE) + 1;
struct passwd *
pwcopy(struct passwd *pw)
{
- struct passwd *copy = xmalloc(sizeof(*copy));
+ struct passwd *copy = xcalloc(1, sizeof(*copy));
- memset(copy, 0, sizeof(*copy));
copy->pw_name = xstrdup(pw->pw_name);
copy->pw_passwd = xstrdup(pw->pw_passwd);
copy->pw_gecos = xstrdup(pw->pw_gecos);
/*
* Convert ASCII string to TCP/IP port number.
- * Port must be >0 and <=65535.
- * Return 0 if invalid.
+ * Port must be >=0 and <=65535.
+ * Return -1 if invalid.
*/
int
a2port(const char *s)
{
- long port;
- char *endp;
-
- errno = 0;
- port = strtol(s, &endp, 0);
- if (s == endp || *endp != '\0' ||
- (errno == ERANGE && (port == LONG_MIN || port == LONG_MAX)) ||
- port <= 0 || port > 65535)
- return 0;
+ long long port;
+ const char *errstr;
- return port;
+ port = strtonum(s, 0, 65535, &errstr);
+ if (errstr != NULL)
+ return -1;
+ return (int)port;
}
int
switch (*endp++) {
case '\0':
endp--;
+ break;
case 's':
case 'S':
break;
return total;
}
+/*
+ * Returns a standardized host+port identifier string.
+ * Caller must free returned string.
+ */
+char *
+put_host_port(const char *host, u_short port)
+{
+ char *hoststr;
+
+ if (port == 0 || port == SSH_DEFAULT_PORT)
+ return(xstrdup(host));
+ if (asprintf(&hoststr, "[%s]:%d", host, (int)port) < 0)
+ fatal("put_host_port: asprintf: %s", strerror(errno));
+ debug3("put_host_port: %s", hoststr);
+ return hoststr;
+}
+
/*
* Search for next delimiter between hostnames/addresses and ports.
* Argument may be modified (for termination).
} else if (args->num+2 >= nalloc)
nalloc *= 2;
- args->list = xrealloc(args->list, nalloc * sizeof(char *));
+ args->list = xrealloc(args->list, nalloc, sizeof(char *));
args->nalloc = nalloc;
args->list[args->num++] = cp;
args->list[args->num] = NULL;
if ((pw = getpwnam(user)) == NULL)
fatal("tilde_expand_filename: No such user %s", user);
} else if ((pw = getpwuid(uid)) == NULL) /* ~/path */
- fatal("tilde_expand_filename: No such uid %d", uid);
+ fatal("tilde_expand_filename: No such uid %ld", (long)uid);
if (strlcpy(ret, pw->pw_dir, sizeof(ret)) >= sizeof(ret))
fatal("tilde_expand_filename: Path too long");
u_long *lineno)
{
while (fgets(buf, bufsz, f) != NULL) {
+ if (buf[0] == '\0')
+ continue;
(*lineno)++;
if (buf[strlen(buf) - 1] == '\n' || feof(f)) {
return 0;
int nullfd, dupfd;
if ((nullfd = dupfd = open(_PATH_DEVNULL, O_RDWR)) == -1) {
- fprintf(stderr, "Couldn't open /dev/null: %s", strerror(errno));
+ fprintf(stderr, "Couldn't open /dev/null: %s\n",
+ strerror(errno));
exit(1);
}
while (++dupfd <= 2) {
if (fcntl(dupfd, F_GETFL, 0) >= 0)
continue;
if (dup2(nullfd, dupfd) == -1) {
- fprintf(stderr, "dup2: %s", strerror(errno));
+ fprintf(stderr, "dup2: %s\n", strerror(errno));
exit(1);
}
}
}
char *
-tohex(const u_char *d, u_int l)
+tohex(const void *vp, size_t l)
{
+ const u_char *p = (const u_char *)vp;
char b[3], *r;
- u_int i, hl;
+ size_t i, hl;
+
+ if (l > 65536)
+ return xstrdup("tohex: length > 65536");
hl = l * 2 + 1;
- r = xmalloc(hl);
- *r = '\0';
+ r = xcalloc(1, hl);
for (i = 0; i < l; i++) {
- snprintf(b, sizeof(b), "%02x", d[i]);
+ snprintf(b, sizeof(b), "%02x", p[i]);
strlcat(r, b, hl);
}
return (r);
}
+u_int64_t
+get_u64(const void *vp)
+{
+ const u_char *p = (const u_char *)vp;
+ u_int64_t v;
+
+ v = (u_int64_t)p[0] << 56;
+ v |= (u_int64_t)p[1] << 48;
+ v |= (u_int64_t)p[2] << 40;
+ v |= (u_int64_t)p[3] << 32;
+ v |= (u_int64_t)p[4] << 24;
+ v |= (u_int64_t)p[5] << 16;
+ v |= (u_int64_t)p[6] << 8;
+ v |= (u_int64_t)p[7];
+
+ return (v);
+}
+
+u_int32_t
+get_u32(const void *vp)
+{
+ const u_char *p = (const u_char *)vp;
+ u_int32_t v;
+
+ v = (u_int32_t)p[0] << 24;
+ v |= (u_int32_t)p[1] << 16;
+ v |= (u_int32_t)p[2] << 8;
+ v |= (u_int32_t)p[3];
+
+ return (v);
+}
+
+u_int16_t
+get_u16(const void *vp)
+{
+ const u_char *p = (const u_char *)vp;
+ u_int16_t v;
+
+ v = (u_int16_t)p[0] << 8;
+ v |= (u_int16_t)p[1];
+
+ return (v);
+}
+
+void
+put_u64(void *vp, u_int64_t v)
+{
+ u_char *p = (u_char *)vp;
+
+ p[0] = (u_char)(v >> 56) & 0xff;
+ p[1] = (u_char)(v >> 48) & 0xff;
+ p[2] = (u_char)(v >> 40) & 0xff;
+ p[3] = (u_char)(v >> 32) & 0xff;
+ p[4] = (u_char)(v >> 24) & 0xff;
+ p[5] = (u_char)(v >> 16) & 0xff;
+ p[6] = (u_char)(v >> 8) & 0xff;
+ p[7] = (u_char)v & 0xff;
+}
+
+void
+put_u32(void *vp, u_int32_t v)
+{
+ u_char *p = (u_char *)vp;
+
+ p[0] = (u_char)(v >> 24) & 0xff;
+ p[1] = (u_char)(v >> 16) & 0xff;
+ p[2] = (u_char)(v >> 8) & 0xff;
+ p[3] = (u_char)v & 0xff;
+}
+
+
+void
+put_u16(void *vp, u_int16_t v)
+{
+ u_char *p = (u_char *)vp;
+
+ p[0] = (u_char)(v >> 8) & 0xff;
+ p[1] = (u_char)v & 0xff;
+}
+
+void
+ms_subtract_diff(struct timeval *start, int *ms)
+{
+ struct timeval diff, finish;
+
+ gettimeofday(&finish, NULL);
+ timersub(&finish, start, &diff);
+ *ms -= (diff.tv_sec * 1000) + (diff.tv_usec / 1000);
+}
+
+void
+ms_to_timeval(struct timeval *tv, int ms)
+{
+ if (ms < 0)
+ ms = 0;
+ tv->tv_sec = ms / 1000;
+ tv->tv_usec = (ms % 1000) * 1000;
+}
+