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authordjm@openbsd.org <djm@openbsd.org>2015-02-16 22:08:57 (GMT)
committerDamien Miller <djm@mindrot.org>2015-02-16 22:32:31 (GMT)
commit6c5c949782d86a6e7d58006599c7685bfcd01685 (patch)
tree7a3f58c507d8aacaefae9880bcfcc924aa2b891b
parent51b082ccbe633dc970df1d1f4c9c0497115fe721 (diff)
upstream commit
Refactor hostkeys_foreach() and dependent code Deal with IP addresses (i.e. CheckHostIP) Don't clobber known_hosts when nothing changed ok markus@ as part of larger commit
-rw-r--r--clientloop.c22
-rw-r--r--hostfile.c219
-rw-r--r--hostfile.h31
-rw-r--r--ssh-keygen.c71
4 files changed, 218 insertions, 125 deletions
diff --git a/clientloop.c b/clientloop.c
index 7b54b6e..c6f8e9d 100644
--- a/clientloop.c
+++ b/clientloop.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: clientloop.c,v 1.267 2015/01/26 03:04:45 djm Exp $ */
+/* $OpenBSD: clientloop.c,v 1.268 2015/02/16 22:08:57 djm Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -2102,8 +2102,9 @@ client_input_hostkeys(void)
struct sshbuf *buf = NULL;
struct sshkey *key = NULL, **tmp, **keys = NULL;
int r, success = 1;
- char *fp, *host_str = NULL;
+ char *fp, *host_str = NULL, *ip_str = NULL;
static int hostkeys_seen = 0; /* XXX use struct ssh */
+ extern struct sockaddr_storage hostaddr; /* XXX from ssh.c */
/*
* NB. Return success for all cases other than protocol error. The
@@ -2148,16 +2149,24 @@ client_input_hostkeys(void)
key = NULL;
}
- debug3("%s: received %u keys from server", __func__, nkeys);
if (nkeys == 0) {
error("%s: server sent no hostkeys", __func__);
goto out;
}
- get_hostfile_hostname_ipaddr(host, NULL, options.port, &host_str, NULL);
+ get_hostfile_hostname_ipaddr(host,
+ options.check_host_ip ? (struct sockaddr *)&hostaddr : NULL,
+ options.port, &host_str, options.check_host_ip ? &ip_str : NULL);
- if ((r = hostfile_replace_entries(options.user_hostfiles[0], host_str,
- keys, nkeys, options.hash_known_hosts, 1)) != 0) {
+ debug3("%s: update known hosts for %s%s%s with %u keys from server",
+ __func__, host_str,
+ options.check_host_ip ? " " : "",
+ options.check_host_ip ? ip_str : "", nkeys);
+
+ if ((r = hostfile_replace_entries(options.user_hostfiles[0],
+ host_str, options.check_host_ip ? ip_str : NULL,
+ keys, nkeys, options.hash_known_hosts, 0,
+ options.fingerprint_hash)) != 0) {
error("%s: hostfile_replace_entries failed: %s",
__func__, ssh_err(r));
goto out;
@@ -2166,6 +2175,7 @@ client_input_hostkeys(void)
/* Success */
out:
free(host_str);
+ free(ip_str);
sshkey_free(key);
for (i = 0; i < nkeys; i++)
sshkey_free(keys[i]);
diff --git a/hostfile.c b/hostfile.c
index ea6bc6f..b235795 100644
--- a/hostfile.c
+++ b/hostfile.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: hostfile.c,v 1.63 2015/01/26 13:36:53 djm Exp $ */
+/* $OpenBSD: hostfile.c,v 1.64 2015/02/16 22:08:57 djm Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -184,24 +184,6 @@ hostfile_read_key(char **cpp, u_int *bitsp, struct sshkey *ret)
return 1;
}
-static int
-hostfile_check_key(int bits, const struct sshkey *key, const char *host,
- const char *filename, u_long linenum)
-{
-#ifdef WITH_SSH1
- if (key == NULL || key->type != KEY_RSA1 || key->rsa == NULL)
- return 1;
- if (bits != BN_num_bits(key->rsa->n)) {
- logit("Warning: %s, line %lu: keysize mismatch for host %s: "
- "actual %d vs. announced %d.",
- filename, linenum, host, BN_num_bits(key->rsa->n), bits);
- logit("Warning: replace %d with %d in %s, line %lu.",
- bits, BN_num_bits(key->rsa->n), filename, linenum);
- }
-#endif
- return 1;
-}
-
static HostkeyMarker
check_markers(char **cpp)
{
@@ -295,8 +277,8 @@ load_hostkeys(struct hostkeys *hostkeys, const char *host, const char *path)
ctx.num_loaded = 0;
ctx.hostkeys = hostkeys;
- if ((r = hostkeys_foreach(path, record_hostkey, &ctx, host,
- HKF_WANT_MATCH_HOST|HKF_WANT_PARSE_KEY)) != 0) {
+ if ((r = hostkeys_foreach(path, record_hostkey, &ctx, host, NULL,
+ HKF_WANT_MATCH|HKF_WANT_PARSE_KEY)) != 0) {
if (r != SSH_ERR_SYSTEM_ERROR && errno != ENOENT)
debug("%s: hostkeys_foreach failed for %s: %s",
__func__, path, ssh_err(r));
@@ -433,7 +415,7 @@ lookup_key_in_hostkeys_by_type(struct hostkeys *hostkeys, int keytype,
}
static int
-write_host_entry(FILE *f, const char *host,
+write_host_entry(FILE *f, const char *host, const char *ip,
const struct sshkey *key, int store_hash)
{
int r, success = 0;
@@ -444,8 +426,11 @@ write_host_entry(FILE *f, const char *host,
error("%s: host_hash failed", __func__);
return 0;
}
- }
- fprintf(f, "%s ", store_hash ? hashed_host : host);
+ fprintf(f, "%s ", hashed_host);
+ } else if (ip != NULL)
+ fprintf(f, "%s,%s ", host, ip);
+ else
+ fprintf(f, "%s ", host);
if ((r = sshkey_write(key, f)) == 0)
success = 1;
@@ -471,7 +456,7 @@ add_host_to_hostfile(const char *filename, const char *host,
f = fopen(filename, "a");
if (!f)
return 0;
- success = write_host_entry(f, host, key, store_hash);
+ success = write_host_entry(f, host, NULL, key, store_hash);
fclose(f);
return success;
}
@@ -480,19 +465,20 @@ struct host_delete_ctx {
FILE *out;
int quiet;
const char *host;
- int *skip_keys;
+ int *skip_keys; /* XXX split for host/ip? might want to ensure both */
struct sshkey * const *keys;
size_t nkeys;
+ int modified;
};
static int
host_delete(struct hostkey_foreach_line *l, void *_ctx)
{
struct host_delete_ctx *ctx = (struct host_delete_ctx *)_ctx;
- int loglevel = ctx->quiet ? SYSLOG_LEVEL_DEBUG1 : SYSLOG_LEVEL_INFO;
+ int loglevel = ctx->quiet ? SYSLOG_LEVEL_DEBUG1 : SYSLOG_LEVEL_VERBOSE;
size_t i;
- if (l->status == HKF_STATUS_HOST_MATCHED) {
+ if (l->status == HKF_STATUS_MATCHED) {
if (l->marker != MRK_NONE) {
/* Don't remove CA and revocation lines */
fprintf(ctx->out, "%s\n", l->line);
@@ -525,9 +511,10 @@ host_delete(struct hostkey_foreach_line *l, void *_ctx)
* Hostname matches and has no CA/revoke marker, delete it
* by *not* writing the line to ctx->out.
*/
- do_log2(loglevel, "%s%s%s:%ld: Host %s removed",
+ do_log2(loglevel, "%s%s%s:%ld: Removed %s key for host %s",
ctx->quiet ? __func__ : "", ctx->quiet ? ": " : "",
- l->path, l->linenum, ctx->host);
+ l->path, l->linenum, sshkey_type(l->key), ctx->host);
+ ctx->modified = 1;
return 0;
}
/* Retain non-matching hosts and invalid lines when deleting */
@@ -541,13 +528,13 @@ host_delete(struct hostkey_foreach_line *l, void *_ctx)
}
int
-hostfile_replace_entries(const char *filename, const char *host,
- struct sshkey **keys, size_t nkeys, int store_hash, int quiet)
+hostfile_replace_entries(const char *filename, const char *host, const char *ip,
+ struct sshkey **keys, size_t nkeys, int store_hash, int quiet, int hash_alg)
{
int r, fd, oerrno = 0;
- int loglevel = quiet ? SYSLOG_LEVEL_DEBUG1 : SYSLOG_LEVEL_INFO;
+ int loglevel = quiet ? SYSLOG_LEVEL_DEBUG1 : SYSLOG_LEVEL_VERBOSE;
struct host_delete_ctx ctx;
- char *temp = NULL, *back = NULL;
+ char *fp, *temp = NULL, *back = NULL;
mode_t omask;
size_t i;
@@ -560,6 +547,7 @@ hostfile_replace_entries(const char *filename, const char *host,
return SSH_ERR_ALLOC_FAIL;
ctx.keys = keys;
ctx.nkeys = nkeys;
+ ctx.modified = 0;
/*
* Prepare temporary file for in-place deletion.
@@ -585,7 +573,7 @@ hostfile_replace_entries(const char *filename, const char *host,
}
/* Remove all entries for the specified host from the file */
- if ((r = hostkeys_foreach(filename, host_delete, &ctx, host,
+ if ((r = hostkeys_foreach(filename, host_delete, &ctx, host, ip,
HKF_WANT_PARSE_KEY)) != 0) {
error("%s: hostkeys_foreach failed: %s", __func__, ssh_err(r));
goto fail;
@@ -595,38 +583,54 @@ hostfile_replace_entries(const char *filename, const char *host,
for (i = 0; i < nkeys; i++) {
if (ctx.skip_keys[i])
continue;
- do_log2(loglevel, "%s%sadd %s key to %s",
- quiet ? __func__ : "", quiet ? ": " : NULL,
- sshkey_type(keys[i]), filename);
- if (!write_host_entry(ctx.out, host, keys[i], store_hash)) {
+ if ((fp = sshkey_fingerprint(keys[i], hash_alg,
+ SSH_FP_DEFAULT)) == NULL) {
+ r = SSH_ERR_ALLOC_FAIL;
+ goto fail;
+ }
+ do_log2(loglevel, "%s%sAdding new key for %s to %s: %s %s",
+ quiet ? __func__ : "", quiet ? ": " : "", host, filename,
+ sshkey_ssh_name(keys[i]), fp);
+ free(fp);
+ if (!write_host_entry(ctx.out, host, ip, keys[i], store_hash)) {
r = SSH_ERR_INTERNAL_ERROR;
goto fail;
}
+ ctx.modified = 1;
}
fclose(ctx.out);
ctx.out = NULL;
- /* Backup the original file and replace it with the temporary */
- if (unlink(back) == -1 && errno != ENOENT) {
- oerrno = errno;
- error("%s: unlink %.100s: %s", __func__, back, strerror(errno));
- r = SSH_ERR_SYSTEM_ERROR;
- goto fail;
- }
- if (link(filename, back) == -1) {
- oerrno = errno;
- error("%s: link %.100s to %.100s: %s", __func__, filename, back,
- strerror(errno));
- r = SSH_ERR_SYSTEM_ERROR;
- goto fail;
- }
- if (rename(temp, filename) == -1) {
- oerrno = errno;
- error("%s: rename \"%s\" to \"%s\": %s", __func__,
- temp, filename, strerror(errno));
- r = SSH_ERR_SYSTEM_ERROR;
- goto fail;
+ if (ctx.modified) {
+ /* Backup the original file and replace it with the temporary */
+ if (unlink(back) == -1 && errno != ENOENT) {
+ oerrno = errno;
+ error("%s: unlink %.100s: %s", __func__,
+ back, strerror(errno));
+ r = SSH_ERR_SYSTEM_ERROR;
+ goto fail;
+ }
+ if (link(filename, back) == -1) {
+ oerrno = errno;
+ error("%s: link %.100s to %.100s: %s", __func__,
+ filename, back, strerror(errno));
+ r = SSH_ERR_SYSTEM_ERROR;
+ goto fail;
+ }
+ if (rename(temp, filename) == -1) {
+ oerrno = errno;
+ error("%s: rename \"%s\" to \"%s\": %s", __func__,
+ temp, filename, strerror(errno));
+ r = SSH_ERR_SYSTEM_ERROR;
+ goto fail;
+ }
+ } else {
+ /* No changes made; just delete the temporary file */
+ if (unlink(temp) != 0)
+ error("%s: unlink \"%s\": %s", __func__,
+ temp, strerror(errno));
}
+
/* success */
r = 0;
fail:
@@ -663,18 +667,20 @@ match_maybe_hashed(const char *host, const char *names, int *was_hashed)
int
hostkeys_foreach(const char *path, hostkeys_foreach_fn *callback, void *ctx,
- const char *host, u_int options)
+ const char *host, const char *ip, u_int options)
{
FILE *f;
- char line[8192], oline[8192];
+ char line[8192], oline[8192], ktype[128];
u_long linenum = 0;
char *cp, *cp2;
u_int kbits;
+ int hashed;
int s, r = 0;
struct hostkey_foreach_line lineinfo;
+ size_t l;
memset(&lineinfo, 0, sizeof(lineinfo));
- if (host == NULL && (options & HKF_WANT_MATCH_HOST) != 0)
+ if (host == NULL && (options & HKF_WANT_MATCH) != 0)
return SSH_ERR_INVALID_ARGUMENT;
if ((f = fopen(path, "r")) == NULL)
return SSH_ERR_SYSTEM_ERROR;
@@ -689,13 +695,15 @@ hostkeys_foreach(const char *path, hostkeys_foreach_fn *callback, void *ctx,
lineinfo.path = path;
lineinfo.linenum = linenum;
lineinfo.line = oline;
+ lineinfo.marker = MRK_NONE;
lineinfo.status = HKF_STATUS_OK;
+ lineinfo.keytype = KEY_UNSPEC;
/* Skip any leading whitespace, comments and empty lines. */
for (cp = line; *cp == ' ' || *cp == '\t'; cp++)
;
if (!*cp || *cp == '#' || *cp == '\n') {
- if ((options & HKF_WANT_MATCH_HOST) == 0) {
+ if ((options & HKF_WANT_MATCH) == 0) {
lineinfo.status = HKF_STATUS_COMMENT;
if ((r = callback(&lineinfo, ctx)) != 0)
break;
@@ -706,7 +714,7 @@ hostkeys_foreach(const char *path, hostkeys_foreach_fn *callback, void *ctx,
if ((lineinfo.marker = check_markers(&cp)) == MRK_ERROR) {
verbose("%s: invalid marker at %s:%lu",
__func__, path, linenum);
- if ((options & HKF_WANT_MATCH_HOST) == 0)
+ if ((options & HKF_WANT_MATCH) == 0)
goto bad;
continue;
}
@@ -719,24 +727,47 @@ hostkeys_foreach(const char *path, hostkeys_foreach_fn *callback, void *ctx,
/* Check if the host name matches. */
if (host != NULL) {
- s = match_maybe_hashed(host, lineinfo.hosts,
- &lineinfo.was_hashed);
- if (s == 1)
- lineinfo.status = HKF_STATUS_HOST_MATCHED;
- else if ((options & HKF_WANT_MATCH_HOST) != 0)
- continue;
- else if (s == -1) {
+ if ((s = match_maybe_hashed(host, lineinfo.hosts,
+ &hashed)) == -1) {
debug2("%s: %s:%ld: bad host hash \"%.32s\"",
__func__, path, linenum, lineinfo.hosts);
goto bad;
}
+ if (s == 1) {
+ lineinfo.status = HKF_STATUS_MATCHED;
+ lineinfo.match |= HKF_MATCH_HOST |
+ (hashed ? HKF_MATCH_HOST_HASHED : 0);
+ }
+ /* Try matching IP address if supplied */
+ if (ip != NULL) {
+ if ((s = match_maybe_hashed(ip, lineinfo.hosts,
+ &hashed)) == -1) {
+ debug2("%s: %s:%ld: bad ip hash "
+ "\"%.32s\"", __func__, path,
+ linenum, lineinfo.hosts);
+ goto bad;
+ }
+ if (s == 1) {
+ lineinfo.status = HKF_STATUS_MATCHED;
+ lineinfo.match |= HKF_MATCH_IP |
+ (hashed ? HKF_MATCH_IP_HASHED : 0);
+ }
+ }
+ /*
+ * Skip this line if host matching requested and
+ * neither host nor address matched.
+ */
+ if ((options & HKF_WANT_MATCH) != 0 &&
+ lineinfo.status != HKF_STATUS_MATCHED)
+ continue;
}
/* Got a match. Skip host name and any following whitespace */
for (; *cp2 == ' ' || *cp2 == '\t'; cp2++)
;
if (*cp2 == '\0' || *cp2 == '#') {
- debug2("%s:%ld: truncated before key", path, linenum);
+ debug2("%s:%ld: truncated before key type",
+ path, linenum);
goto bad;
}
lineinfo.rawkey = cp = cp2;
@@ -749,7 +780,8 @@ hostkeys_foreach(const char *path, hostkeys_foreach_fn *callback, void *ctx,
*/
if ((lineinfo.key = sshkey_new(KEY_UNSPEC)) == NULL) {
error("%s: sshkey_new failed", __func__);
- return SSH_ERR_ALLOC_FAIL;
+ r = SSH_ERR_ALLOC_FAIL;
+ break;
}
if (!hostfile_read_key(&cp, &kbits, lineinfo.key)) {
#ifdef WITH_SSH1
@@ -757,7 +789,8 @@ hostkeys_foreach(const char *path, hostkeys_foreach_fn *callback, void *ctx,
lineinfo.key = sshkey_new(KEY_RSA1);
if (lineinfo.key == NULL) {
error("%s: sshkey_new fail", __func__);
- return SSH_ERR_ALLOC_FAIL;
+ r = SSH_ERR_ALLOC_FAIL;
+ break;
}
if (!hostfile_read_key(&cp, &kbits,
lineinfo.key))
@@ -766,9 +799,43 @@ hostkeys_foreach(const char *path, hostkeys_foreach_fn *callback, void *ctx,
goto bad;
#endif
}
- if (!hostfile_check_key(kbits, lineinfo.key, host,
- path, linenum)) {
+ lineinfo.keytype = lineinfo.key->type;
+ lineinfo.comment = cp;
+ } else {
+ /* Extract and parse key type */
+ l = strcspn(lineinfo.rawkey, " \t");
+ if (l <= 1 || l >= sizeof(ktype) ||
+ lineinfo.rawkey[l] == '\0')
+ goto bad;
+ memcpy(ktype, lineinfo.rawkey, l);
+ ktype[l] = '\0';
+ lineinfo.keytype = sshkey_type_from_name(ktype);
+#ifdef WITH_SSH1
+ /*
+ * Assume RSA1 if the first component is a short
+ * decimal number.
+ */
+ if (lineinfo.keytype == KEY_UNSPEC && l < 8 &&
+ strspn(ktype, "0123456789") == l)
+ lineinfo.keytype = KEY_RSA1;
+#endif
+ /*
+ * Check that something other than whitespace follows
+ * the key type. This won't catch all corruption, but
+ * it does catch trivial truncation.
+ */
+ cp2 += l; /* Skip past key type */
+ for (; *cp2 == ' ' || *cp2 == '\t'; cp2++)
+ ;
+ if (*cp2 == '\0' || *cp2 == '#') {
+ debug2("%s:%ld: truncated after key type",
+ path, linenum);
+ lineinfo.keytype = KEY_UNSPEC;
+ }
+ if (lineinfo.keytype == KEY_UNSPEC) {
bad:
+ sshkey_free(lineinfo.key);
+ lineinfo.key = NULL;
lineinfo.status = HKF_STATUS_INVALID;
if ((r = callback(&lineinfo, ctx)) != 0)
break;
diff --git a/hostfile.h b/hostfile.h
index 9080b5e..bd21043 100644
--- a/hostfile.h
+++ b/hostfile.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: hostfile.h,v 1.23 2015/01/26 03:04:45 djm Exp $ */
+/* $OpenBSD: hostfile.h,v 1.24 2015/02/16 22:08:57 djm Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
@@ -44,8 +44,9 @@ int hostfile_read_key(char **, u_int *, struct sshkey *);
int add_host_to_hostfile(const char *, const char *,
const struct sshkey *, int);
-int hostfile_replace_entries(const char *filename, const char *host,
- struct sshkey **keys, size_t nkeys, int store_hash, int quiet);
+int hostfile_replace_entries(const char *filename,
+ const char *host, const char *ip, struct sshkey **keys, size_t nkeys,
+ int store_hash, int quiet, int hash_alg);
#define HASH_MAGIC "|1|"
#define HASH_DELIM '|'
@@ -60,13 +61,19 @@ char *host_hash(const char *, const char *, u_int);
* hostnames. Allows access to the raw keyfile lines to allow
* streaming edits to the file to take place.
*/
-#define HKF_WANT_MATCH_HOST (1) /* return only matching hosts */
+#define HKF_WANT_MATCH (1) /* return only matching hosts/addrs */
#define HKF_WANT_PARSE_KEY (1<<1) /* need key parsed */
-#define HKF_STATUS_OK 1 /* Line parsed, didn't match host */
-#define HKF_STATUS_INVALID 2 /* line had parse error */
-#define HKF_STATUS_COMMENT 3 /* valid line contained no key */
-#define HKF_STATUS_HOST_MATCHED 4 /* hostname matched */
+#define HKF_STATUS_OK 0 /* Line parsed, didn't match host */
+#define HKF_STATUS_INVALID 1 /* line had parse error */
+#define HKF_STATUS_COMMENT 2 /* valid line contained no key */
+#define HKF_STATUS_MATCHED 3 /* hostname or IP matched */
+
+#define HKF_MATCH_HOST (1) /* hostname matched */
+#define HKF_MATCH_IP (1<<1) /* address matched */
+#define HKF_MATCH_HOST_HASHED (1<<2) /* hostname was hashed */
+#define HKF_MATCH_IP_HASHED (1<<3) /* address was hashed */
+/* XXX HKF_MATCH_KEY_TYPE? */
/*
* The callback function receives this as an argument for each matching
@@ -76,12 +83,13 @@ char *host_hash(const char *, const char *, u_int);
struct hostkey_foreach_line {
const char *path; /* Path of file */
u_long linenum; /* Line number */
- int status; /* One of HKF_STATUS_* */
+ u_int status; /* One of HKF_STATUS_* */
+ u_int match; /* Zero or more of HKF_MATCH_* OR'd together */
char *line; /* Entire key line; mutable by callback */
int marker; /* CA/revocation markers; indicated by MRK_* value */
const char *hosts; /* Raw hosts text, may be hashed or list multiple */
- int was_hashed; /* Non-zero if hostname was hashed */
const char *rawkey; /* Text of key and any comment following it */
+ int keytype; /* Type of key; KEY_UNSPEC for invalid/comment lines */
struct sshkey *key; /* Key, if parsed ok and HKF_WANT_MATCH_HOST set */
const char *comment; /* Any comment following the key */
};
@@ -93,7 +101,8 @@ struct hostkey_foreach_line {
*/
typedef int hostkeys_foreach_fn(struct hostkey_foreach_line *l, void *ctx);
+/* Iterate over a hostkeys file */
int hostkeys_foreach(const char *path, hostkeys_foreach_fn *callback, void *ctx,
- const char *host, u_int options);
+ const char *host, const char *ip, u_int options);
#endif
diff --git a/ssh-keygen.c b/ssh-keygen.c
index 2c6a568..9b20682 100644
--- a/ssh-keygen.c
+++ b/ssh-keygen.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssh-keygen.c,v 1.261 2015/01/30 01:10:33 djm Exp $ */
+/* $OpenBSD: ssh-keygen.c,v 1.262 2015/02/16 22:08:57 djm Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -1052,40 +1052,47 @@ known_hosts_hash(struct hostkey_foreach_line *l, void *_ctx)
char *hashed, *cp, *hosts, *ohosts;
int has_wild = l->hosts && strcspn(l->hosts, "*?!") != strlen(l->hosts);
- /* Retain invalid lines when hashing, but mark file as invalid. */
- if (l->status == HKF_STATUS_INVALID) {
+ switch (l->status) {
+ case HKF_STATUS_OK:
+ case HKF_STATUS_MATCHED:
+ /*
+ * Don't hash hosts already already hashed, with wildcard
+ * characters or a CA/revocation marker.
+ */
+ if ((l->match & HKF_MATCH_HOST_HASHED) != 0 ||
+ has_wild || l->marker != MRK_NONE) {
+ fprintf(ctx->out, "%s\n", l->line);
+ if (has_wild && !find_host) {
+ fprintf(stderr, "%s:%ld: ignoring host name "
+ "with wildcard: %.64s\n", l->path,
+ l->linenum, l->hosts);
+ }
+ return 0;
+ }
+ /*
+ * Split any comma-separated hostnames from the host list,
+ * hash and store separately.
+ */
+ ohosts = hosts = xstrdup(l->hosts);
+ while ((cp = strsep(&hosts, ",")) != NULL && *cp != '\0') {
+ if ((hashed = host_hash(cp, NULL, 0)) == NULL)
+ fatal("hash_host failed");
+ fprintf(ctx->out, "%s %s\n", hashed, l->rawkey);
+ ctx->has_unhashed = 1;
+ }
+ free(ohosts);
+ return 0;
+ case HKF_STATUS_INVALID:
+ /* Retain invalid lines, but mark file as invalid. */
ctx->invalid = 1;
fprintf(stderr, "%s:%ld: invalid line\n", l->path, l->linenum);
+ /* FALLTHROUGH */
+ default:
fprintf(ctx->out, "%s\n", l->line);
return 0;
}
-
- /*
- * Don't hash hosts already already hashed, with wildcard characters
- * or a CA/revocation marker.
- */
- if (l->was_hashed || has_wild || l->marker != MRK_NONE) {
- fprintf(ctx->out, "%s\n", l->line);
- if (has_wild && !find_host) {
- fprintf(stderr, "%s:%ld: ignoring host name "
- "with wildcard: %.64s\n", l->path,
- l->linenum, l->hosts);
- }
- return 0;
- }
- /*
- * Split any comma-separated hostnames from the host list,
- * hash and store separately.
- */
- ohosts = hosts = xstrdup(l->hosts);
- while ((cp = strsep(&hosts, ",")) != NULL && *cp != '\0') {
- if ((hashed = host_hash(cp, NULL, 0)) == NULL)
- fatal("hash_host failed");
- fprintf(ctx->out, "%s %s\n", hashed, l->rawkey);
- ctx->has_unhashed = 1;
- }
- free(ohosts);
- return 0;
+ /* NOTREACHED */
+ return -1;
}
static int
@@ -1093,7 +1100,7 @@ known_hosts_find_delete(struct hostkey_foreach_line *l, void *_ctx)
{
struct known_hosts_ctx *ctx = (struct known_hosts_ctx *)_ctx;
- if (l->status == HKF_STATUS_HOST_MATCHED) {
+ if (l->status == HKF_STATUS_MATCHED) {
if (delete_host) {
if (l->marker != MRK_NONE) {
/* Don't remove CA and revocation lines */
@@ -1180,7 +1187,7 @@ do_known_hosts(struct passwd *pw, const char *name)
/* XXX support identity_file == "-" for stdin */
if ((r = hostkeys_foreach(identity_file,
hash_hosts ? known_hosts_hash : known_hosts_find_delete, &ctx,
- name, find_host ? HKF_WANT_MATCH_HOST : 0)) != 0)
+ name, NULL, find_host ? HKF_WANT_MATCH : 0)) != 0)
fatal("%s: hostkeys_foreach failed: %s", __func__, ssh_err(r));
if (inplace)