Problem: one call to gss_import_name() includes the terminating
NULL in a gss_buffer_desc.length, and one doesn't.
According to the examples at:
http://docs.oracle.com/cd/E19253-01/816-4863/overview-22/index.html
the NULL should be included in the length.
Solution: Fix one case to include the terminating NULL in the length.
Problem: if client sets ZMQ_GSSAPI_PRINCIPAL to a name
for which credentials cannot be obtained, authentication
proceeds with default credentials.
Solution: Before initializing the security context, check
whether there was a failed attempt to acquire credentials
for a specific principal and bail out if so.
Fixes#2531
Problem: if client sets the ZMQ_GSSAPI_PRINCIPAL to a valid
principal, authentication fails.
When an application sets ZMQ_GSSAPI_PRINCIPAL, whether as a
client or a server, libzmq internally calls gss_acquire_cred()
with cred_usage=GSS_C_ACCEPT. This cred_usage setting is for
acceptors (servers) only, thus it doesn't work for initiators
(clients).
Solution: Change the cred_usage parameter to GSS_C_BOTH to allow
initiators to set ZMQ_GSSAPI_PRINCIPAL.
Problem: the ZMQ_GSSAPI_PRINCIPAL socket option is described
as mandatory in the zmq_gssapi(7) manual page. In fact it
is optional.
Solution: Describe ZMQ_GSSAPI_PRINCIPAL as optional.
If unspecified, default credentials are used.
Problem: configure.ac is not setting HAVE_LIBGSSAPI_KRB5
in src/platform.hpp when --with-libgssapi_krb5 is specified
Commit 09e868b743
switched the libgssapi_krb5 check from AC_CHECK_LIB
to AC_SEARCH_LIBS, but neglected to add an AC_DEFINE
for HAVE_LIBGSSAPI_KRB5, thus the GSSAPI code is
never compiled.
Solution: Add missing AC_DEFINE of HAVE_LIBGSSAPI_KRB5.
* change macOS < 10.12 clock to SYSTEM_CLOCK, fixes#2537
* remove clock_id option from alt_clock_gettime since we always want a monotonic clock.
* update header definition for alt_clock_gettime
* pass clock definition down to host_get_clock_service for macOS < 10.12
* change to monotonic clocks
Add two new options to CMakeLists.txt:
`BUILD_SHARED` - Whether or not to build the shared object (Default: ON)
`BUILD_STATIC` - Whether or not to build the static archive (Default: ON)
Treat ECONNRESET, ENETRESET and EINTR as non-fatal
failures in TCP Tuning on Windows as they are in the
Unixes. Also adds ENETRESET to the Unix list that was missing.
Detect AI_V4MAPPED is not supported in getaddrinfo() on the fly
and retry query. This issue was seen on ancient FreeBSD releases
and current implementation does support this flag correctly.
