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Unix GSSAPI: support static linking against Heimdal.
Heimdal provides its own definitions of OIDs like GSS_C_NT_USER_NAME in the form of macros, which conflict with our attempt to redefine them as variables - the macro gets expanded into the middle of the variable declaration, leaving the poor C compiler trying to parse a non-declaration along the lines of const_gss_OID (&__gss_c_nt_anonymous_oid_desc) = oids+5; Easily fixed by just not redefining these at all if they're already defined as macros. To make that easier, I've broken up the oids[] array into individual gss_OID_desc declarations, so I can put each one inside the appropriate ifdef. In the process, I've removed the 'const' from the gss_OID_desc declarations. That's on purpose! The problem is that not all implementations of the GSSAPI headers make const_gss_OID a pointer to a *const* gss_OID_desc; sometimes it's just a plain one and the 'const' prefix is just a comment to the user. So removing that const prevents compiler warnings (or worse) about address-taking a const thing and assigning it into a non-const pointer.
This commit is contained in:
Simon Tatham
parent
374107eb1e
commit
35a87984f6
106
ssh/pgssapi.c
106
ssh/pgssapi.c
@ -9,38 +9,63 @@
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#ifndef NO_LIBDL
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/* Reserved static storage for GSS_oids. Comments are quotes from RFC 2744. */
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static const gss_OID_desc oids[] = {
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/* Reserved static storage for GSS_oids.
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* Constants of the form GSS_C_NT_* are specified by rfc 2744.
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* Comments are quotes from RFC 2744 itself.
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*
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* These may be #defined to complex expressions by the local header
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* file, if we're including one in static-GSSAPI mode. (For example,
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* Heimdal defines them to things like
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* (&__gss_c_nt_user_name_oid_desc).) So we only define them if
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* needed. */
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#ifndef GSS_C_NT_USER_NAME
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static gss_OID_desc oid_GSS_C_NT_USER_NAME = {
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/* The implementation must reserve static storage for a
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* gss_OID_desc object containing the value */
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{10, (void *)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x01"},
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10, "\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x01",
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/* corresponding to an object-identifier value of
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* {iso(1) member-body(2) United States(840) mit(113554)
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* infosys(1) gssapi(2) generic(1) user_name(1)}. The constant
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* GSS_C_NT_USER_NAME should be initialized to point
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* to that gss_OID_desc.
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* to that gss_OID_desc. */
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};
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const_gss_OID GSS_C_NT_USER_NAME = &oid_GSS_C_NT_USER_NAME;
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#endif
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* The implementation must reserve static storage for a
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#ifndef GSS_C_NT_MACHINE_UID_NAME
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static gss_OID_desc oid_GSS_C_NT_MACHINE_UID_NAME = {
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/* The implementation must reserve static storage for a
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* gss_OID_desc object containing the value */
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{10, (void *)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x02"},
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10, "\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x02",
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/* corresponding to an object-identifier value of
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* {iso(1) member-body(2) United States(840) mit(113554)
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* infosys(1) gssapi(2) generic(1) machine_uid_name(2)}.
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* The constant GSS_C_NT_MACHINE_UID_NAME should be
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* initialized to point to that gss_OID_desc.
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* initialized to point to that gss_OID_desc. */
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};
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const_gss_OID GSS_C_NT_MACHINE_UID_NAME = &oid_GSS_C_NT_MACHINE_UID_NAME;
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#endif
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* The implementation must reserve static storage for a
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#ifndef GSS_C_NT_STRING_UID_NAME
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static gss_OID_desc oid_GSS_C_NT_STRING_UID_NAME = {
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/* The implementation must reserve static storage for a
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* gss_OID_desc object containing the value */
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{10, (void *)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x03"},
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10, "\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x03",
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/* corresponding to an object-identifier value of
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* {iso(1) member-body(2) United States(840) mit(113554)
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* infosys(1) gssapi(2) generic(1) string_uid_name(3)}.
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* The constant GSS_C_NT_STRING_UID_NAME should be
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* initialized to point to that gss_OID_desc.
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*
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* The implementation must reserve static storage for a
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* initialized to point to that gss_OID_desc. */
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};
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const_gss_OID GSS_C_NT_STRING_UID_NAME = &oid_GSS_C_NT_STRING_UID_NAME;
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#endif
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#ifndef GSS_C_NT_HOSTBASED_SERVICE_X
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static gss_OID_desc oid_GSS_C_NT_HOSTBASED_SERVICE_X = {
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/* The implementation must reserve static storage for a
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* gss_OID_desc object containing the value */
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{6, (void *)"\x2b\x06\x01\x05\x06\x02"},
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6, "\x2b\x06\x01\x05\x06\x02",
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/* corresponding to an object-identifier value of
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* {iso(1) org(3) dod(6) internet(1) security(5)
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* nametypes(6) gss-host-based-services(2))}. The constant
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@ -52,29 +77,44 @@ static const gss_OID_desc oids[] = {
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* GSS_C_NT_HOSTBASED_SERVICE_X should be accepted a synonym
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* for GSS_C_NT_HOSTBASED_SERVICE when presented as an input
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* parameter, but should not be emitted by GSS-API
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* implementations
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*
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* The implementation must reserve static storage for a
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* implementations */
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};
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const_gss_OID GSS_C_NT_HOSTBASED_SERVICE_X = &oid_GSS_C_NT_HOSTBASED_SERVICE_X;
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#endif
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#ifndef GSS_C_NT_HOSTBASED_SERVICE
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static gss_OID_desc oid_GSS_C_NT_HOSTBASED_SERVICE = {
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/* The implementation must reserve static storage for a
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* gss_OID_desc object containing the value */
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{10, (void *)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x04"},
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10, "\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x04",
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/* corresponding to an object-identifier value of {iso(1)
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* member-body(2) Unites States(840) mit(113554) infosys(1)
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* gssapi(2) generic(1) service_name(4)}. The constant
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* GSS_C_NT_HOSTBASED_SERVICE should be initialized
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* to point to that gss_OID_desc.
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*
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* The implementation must reserve static storage for a
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* to point to that gss_OID_desc. */
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};
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const_gss_OID GSS_C_NT_HOSTBASED_SERVICE = &oid_GSS_C_NT_HOSTBASED_SERVICE;
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#endif
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#ifndef GSS_C_NT_ANONYMOUS
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static gss_OID_desc oid_GSS_C_NT_ANONYMOUS = {
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/* The implementation must reserve static storage for a
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* gss_OID_desc object containing the value */
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{6, (void *)"\x2b\x06\01\x05\x06\x03"},
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6, "\x2b\x06\01\x05\x06\x03",
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/* corresponding to an object identifier value of
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* {1(iso), 3(org), 6(dod), 1(internet), 5(security),
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* 6(nametypes), 3(gss-anonymous-name)}. The constant
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* and GSS_C_NT_ANONYMOUS should be initialized to point
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* to that gss_OID_desc.
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*
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* The implementation must reserve static storage for a
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* to that gss_OID_desc. */
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};
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const_gss_OID GSS_C_NT_ANONYMOUS = &oid_GSS_C_NT_ANONYMOUS;
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#endif
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#ifndef GSS_C_NT_EXPORT_NAME
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static gss_OID_desc oid_GSS_C_NT_EXPORT_NAME = {
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/* The implementation must reserve static storage for a
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* gss_OID_desc object containing the value */
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{6, (void *)"\x2b\x06\x01\x05\x06\x04"},
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6, "\x2b\x06\x01\x05\x06\x04",
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/* corresponding to an object-identifier value of
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* {1(iso), 3(org), 6(dod), 1(internet), 5(security),
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* 6(nametypes), 4(gss-api-exported-name)}. The constant
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@ -82,23 +122,13 @@ static const gss_OID_desc oids[] = {
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* to that gss_OID_desc.
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*/
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};
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/* Here are the constants which point to the static structure above.
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*
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* Constants of the form GSS_C_NT_* are specified by rfc 2744.
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*/
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const_gss_OID GSS_C_NT_USER_NAME = oids+0;
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const_gss_OID GSS_C_NT_MACHINE_UID_NAME = oids+1;
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const_gss_OID GSS_C_NT_STRING_UID_NAME = oids+2;
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const_gss_OID GSS_C_NT_HOSTBASED_SERVICE_X = oids+3;
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const_gss_OID GSS_C_NT_HOSTBASED_SERVICE = oids+4;
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const_gss_OID GSS_C_NT_ANONYMOUS = oids+5;
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const_gss_OID GSS_C_NT_EXPORT_NAME = oids+6;
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const_gss_OID GSS_C_NT_EXPORT_NAME = &oid_GSS_C_NT_EXPORT_NAME;
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#endif
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#endif /* NO_LIBDL */
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static gss_OID_desc gss_mech_krb5_desc =
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{ 9, (void *)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x02" };
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{ 9, "\x2a\x86\x48\x86\xf7\x12\x01\x02\x02" };
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/* iso(1) member-body(2) United States(840) mit(113554) infosys(1) gssapi(2) krb5(2)*/
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const gss_OID GSS_MECH_KRB5 = &gss_mech_krb5_desc;
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