debian man page for libssh2_session_supported_algs

Query: libssh2_session_supported_algs

OS: debian

Section: 3

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libssh2_session_supported_algs(3)				  libssh2 manual				 libssh2_session_supported_algs(3)

NAME
libssh2_session_supported_algs - get list of supported algorithms
SYNOPSIS
#include <libssh2.h> int libssh2_session_supported_algs(LIBSSH2_SESSION* session, int method_type, const char*** algs);
DESCRIPTION
session - An instance of initialized LIBSSH2_SESSION (the function will use its pointer to the memory allocation function). method_type - Method type. See .BR libssh2_session_method_pref(3). algs - Address of a pointer that will point to an array af returned algorithms Get a list of supported algorithms for the given method_type. The method_type parameter is equivalent to method_type in libssh2_ses- sion_method_pref(3). If successful, the function will allocate the appropriate amount of memory. When not needed anymore, it must be deal- located by calling libssh2_free(3). When this function is unsuccessful, this must not be done. In order to get a list of all supported compression algorithms, libssh2_session_flag(session, LIBSSH2_FLAG_COMPRESS, 1) must be called before calling this function, otherwise only "none" will be returned. If successful, the function will allocate and fill the array with supported algorithms (the same names as defined in RFC 4253). The array is not NULL terminated.
EXAMPLE
#include "libssh2.h" const char **algorithms; int rc, i; LIBSSH2_SESSION *session; /* initilize session */ session = libssh2_session_init(); rc = libssh2_session_supported_algs(session, LIBSSH2_METHOD_CRYPT_CS, &algorithms); if (rc>0) { /* the call succeeded, do sth. with the list of algorithms (e.g. list them)... */ printf("Supported symmetric algorithms:0); for ( i=0; i<rc; i++ ) printf("%s0, algorithms[i]); /* ... and free the allocated memory when not needed anymore */ libssh2_free(session, algorithms); } else { /* call failed, error handling */ }
RETURN VALUE
On success, a number of returned algorithms (i.e a positive number will be returned). In case of a failure, an error code (a negative num- ber, see below) is returned. 0 should never be returned.
ERRORS
LIBSSH2_ERROR_BAD_USE - Invalid address of algs. LIBSSH2_ERROR_METHOD_NOT_SUPPORTED - Unknown method type. LIBSSH2_ERROR_INVAL - Internal error (normally should not occur). LIBSSH2_ERROR_ALLOC - Allocation of memory failed.
AVAILABILITY
Added in 1.4.0
SEE ALSO
libssh2_session_methods(3), libssh2_session_method_pref(3) libssh2_free(3) libssh2 1.4.0 23 Oct 2011 libssh2_session_supported_algs(3)
Related Man Pages
openssl_add_all_digests(3) - redhat
libssh2_channel_open_ex(3) - debian
libssh2_userauth_password_ex(3) - debian
libssh2_userauth_keyboard_interactive_ex(3) - centos
openssl_add_all_digests(3openssl) - opensolaris
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