libssh2_knownhost_check(3) libssh2 manual libssh2_knownhost_check(3)NAME
libssh2_knownhost_check - check a host+key against the list of known hosts
SYNOPSIS
#include <libssh2.h>
int libssh2_knownhost_check(LIBSSH2_KNOWNHOSTS *hosts,
const char *host,
const char *key, size_t keylen,
int typemask,
struct libssh2_knownhost **knownhost);
DESCRIPTION
Checks a host and its associated key against the collection of known hosts, and returns info back about the (partially) matched entry.
host is a pointer the host name in plain text. The host name can be the IP numerical address of the host or the full name.
key is a pointer to the key for the given host.
keylen is the total size in bytes of the key pointed to by the key argument
typemask is a bitmask that specifies format and info about the data passed to this function. Specificly, it details what format the host
name is, what format the key is and what key type it is.
The host name is given as one of the following types: LIBSSH2_KNOWNHOST_TYPE_PLAIN or LIBSSH2_KNOWNHOST_TYPE_CUSTOM.
The key is encoded using one of the following encodings: LIBSSH2_KNOWNHOST_KEYENC_RAW or LIBSSH2_KNOWNHOST_KEYENC_BASE64.
knownhost if set to non-NULL, it must be a pointer to a 'struct libssh2_knownhost' pointer that gets filled in to point to info about a
known host that matches or partially matches.
RETURN VALUE libssh2_knownhost_check(3) returns info about how well the provided host + key pair matched one of the entries in the list of known hosts.
LIBSSH2_KNOWNHOST_CHECK_FAILURE - something prevented the check to be made
LIBSSH2_KNOWNHOST_CHECK_NOTFOUND - no host match was found
LIBSSH2_KNOWNHOST_CHECK_MATCH - hosts and keys match.
LIBSSH2_KNOWNHOST_CHECK_MISMATCH - host was found, but the keys didn't match!
AVAILABILITY
Added in libssh2 1.2
EXAMPLE
See the ssh2_exec.c example as provided in the tarball.
SEE ALSO libssh2_knownhost_init(3)libssh2_knownhost_free(3)libssh2_knownhost_add(3)libssh2 1.2 28 May 2009 libssh2_knownhost_check(3)
Check Out this Related Man Page
GETENT(1) BSD General Commands Manual GETENT(1)NAME
getent -- get entries from administrative databases
SYNOPSIS
getent database [key ...]
getcap database [key ...]
DESCRIPTION
The getent program retrieves and displays entries from the administrative database specified by database, using the lookup order specified in
nsswitch.conf(5). The display format for a given database is as per the ``traditional'' file format for that database.
database may be one of:
Database Display format
disktab entry
ethers address name
gettytab entry
group group:passwd:gid:[member[,member]...]
hosts address name [alias ...]
netgroup (host,user,domain) [...]
networks name network [alias ...]
passwd user:passwd:uid:gid:gecos:home_dir:shell
printcap entry
protocols name protocol [alias ...]
rpc name number [alias ...]
services name port/protocol [alias ...]
shells /path/to/shell
If one or more key arguments are provided, they will be looked up in database using the appropriate function. For example, passwd supports a
numeric UID or user name; hosts supports an IPv4 address, IPv6 address, or host name; and services supports a service name, service name/pro-
tocol name, numeric port, or numeric port/protocol name.
If no key is provided and database supports enumeration, all entries for database will be retrieved using the appropriate enumeration func-
tion and printed.
For cgetcap(3) style databases (disktab, printcap) specifying a key, lists the entry for that key, and specifying more arguments after the
key are used as fields in that key, and only the values of the keys are returned. For boolean keys true is returned if the key is found. If
a key is not found, then false is always returned.
DIAGNOSTICS
getent exits 0 on success, 1 if there was an error in the command syntax, 2 if one of the specified key names was not found in database, or 3
if there is no support for enumeration on database.
SEE ALSO cgetcap(3), disktab(5), ethers(5), gettytab(5), group(5), hosts(5), networks(5), nsswitch.conf(5), passwd(5), printcap(5), protocols(5),
rpc(5), services(5), shells(5)HISTORY
A getent command appeared in NetBSD 3.0. It was based on the command of the same name in Solaris and Linux.
BSD October 11, 2011 BSD