From 773752eab55047c33bad0d88006bb69f5c601502 Mon Sep 17 00:00:00 2001 From: marha Date: Fri, 19 Nov 2010 13:03:39 +0000 Subject: Added missing files from plink -r 9025 --- tools/plink/pgssapi.c | 105 ++++++++++++++++++ tools/plink/pgssapi.h | 296 ++++++++++++++++++++++++++++++++++++++++++++++++++ tools/plink/sshgssc.c | 209 +++++++++++++++++++++++++++++++++++ tools/plink/sshgssc.h | 23 ++++ 4 files changed, 633 insertions(+) create mode 100644 tools/plink/pgssapi.c create mode 100644 tools/plink/pgssapi.h create mode 100644 tools/plink/sshgssc.c create mode 100644 tools/plink/sshgssc.h diff --git a/tools/plink/pgssapi.c b/tools/plink/pgssapi.c new file mode 100644 index 000000000..d3c768c57 --- /dev/null +++ b/tools/plink/pgssapi.c @@ -0,0 +1,105 @@ +/* This file actually defines the GSSAPI function pointers for + * functions we plan to import from a GSSAPI library. + */ +#include "putty.h" + +#ifndef NO_GSSAPI + +#include "pgssapi.h" + +#ifndef NO_LIBDL + +/* Reserved static storage for GSS_oids. Comments are quotes from RFC 2744. */ +static const gss_OID_desc oids[] = { + /* The implementation must reserve static storage for a + * gss_OID_desc object containing the value */ + {10, (void *)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x01"}, + /* corresponding to an object-identifier value of + * {iso(1) member-body(2) United States(840) mit(113554) + * infosys(1) gssapi(2) generic(1) user_name(1)}. The constant + * GSS_C_NT_USER_NAME should be initialized to point + * to that gss_OID_desc. + + * The implementation must reserve static storage for a + * gss_OID_desc object containing the value */ + {10, (void *)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x02"}, + /* corresponding to an object-identifier value of + * {iso(1) member-body(2) United States(840) mit(113554) + * infosys(1) gssapi(2) generic(1) machine_uid_name(2)}. + * The constant GSS_C_NT_MACHINE_UID_NAME should be + * initialized to point to that gss_OID_desc. + + * The implementation must reserve static storage for a + * gss_OID_desc object containing the value */ + {10, (void *)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x03"}, + /* corresponding to an object-identifier value of + * {iso(1) member-body(2) United States(840) mit(113554) + * infosys(1) gssapi(2) generic(1) string_uid_name(3)}. + * The constant GSS_C_NT_STRING_UID_NAME should be + * initialized to point to that gss_OID_desc. + * + * The implementation must reserve static storage for a + * gss_OID_desc object containing the value */ + {6, (void *)"\x2b\x06\x01\x05\x06\x02"}, + /* corresponding to an object-identifier value of + * {iso(1) org(3) dod(6) internet(1) security(5) + * nametypes(6) gss-host-based-services(2)). The constant + * GSS_C_NT_HOSTBASED_SERVICE_X should be initialized to point + * to that gss_OID_desc. This is a deprecated OID value, and + * implementations wishing to support hostbased-service names + * should instead use the GSS_C_NT_HOSTBASED_SERVICE OID, + * defined below, to identify such names; + * GSS_C_NT_HOSTBASED_SERVICE_X should be accepted a synonym + * for GSS_C_NT_HOSTBASED_SERVICE when presented as an input + * parameter, but should not be emitted by GSS-API + * implementations + * + * The implementation must reserve static storage for a + * gss_OID_desc object containing the value */ + {10, (void *)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x04"}, + /* corresponding to an object-identifier value of {iso(1) + * member-body(2) Unites States(840) mit(113554) infosys(1) + * gssapi(2) generic(1) service_name(4)}. The constant + * GSS_C_NT_HOSTBASED_SERVICE should be initialized + * to point to that gss_OID_desc. + * + * The implementation must reserve static storage for a + * gss_OID_desc object containing the value */ + {6, (void *)"\x2b\x06\01\x05\x06\x03"}, + /* corresponding to an object identifier value of + * {1(iso), 3(org), 6(dod), 1(internet), 5(security), + * 6(nametypes), 3(gss-anonymous-name)}. The constant + * and GSS_C_NT_ANONYMOUS should be initialized to point + * to that gss_OID_desc. + * + * The implementation must reserve static storage for a + * gss_OID_desc object containing the value */ + {6, (void *)"\x2b\x06\x01\x05\x06\x04"}, + /* corresponding to an object-identifier value of + * {1(iso), 3(org), 6(dod), 1(internet), 5(security), + * 6(nametypes), 4(gss-api-exported-name)}. The constant + * GSS_C_NT_EXPORT_NAME should be initialized to point + * to that gss_OID_desc. + */ +}; + +/* Here are the constants which point to the static structure above. + * + * Constants of the form GSS_C_NT_* are specified by rfc 2744. + */ +const_gss_OID GSS_C_NT_USER_NAME = oids+0; +const_gss_OID GSS_C_NT_MACHINE_UID_NAME = oids+1; +const_gss_OID GSS_C_NT_STRING_UID_NAME = oids+2; +const_gss_OID GSS_C_NT_HOSTBASED_SERVICE_X = oids+3; +const_gss_OID GSS_C_NT_HOSTBASED_SERVICE = oids+4; +const_gss_OID GSS_C_NT_ANONYMOUS = oids+5; +const_gss_OID GSS_C_NT_EXPORT_NAME = oids+6; + +#endif /* NO_LIBDL */ + +static gss_OID_desc gss_mech_krb5_desc = +{ 9, (void *)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x02" }; +/* iso(1) member-body(2) United States(840) mit(113554) infosys(1) gssapi(2) krb5(2)*/ +const gss_OID GSS_MECH_KRB5 = &gss_mech_krb5_desc; + +#endif /* NO_GSSAPI */ diff --git a/tools/plink/pgssapi.h b/tools/plink/pgssapi.h new file mode 100644 index 000000000..4cf9fc4dd --- /dev/null +++ b/tools/plink/pgssapi.h @@ -0,0 +1,296 @@ +#ifndef PUTTY_PGSSAPI_H +#define PUTTY_PGSSAPI_H + +#include "putty.h" + +#ifndef NO_GSSAPI + +/* + * On Unix, if we're statically linking against GSSAPI, we leave the + * declaration of all this lot to the official header. If we're + * dynamically linking, we declare it ourselves, because that avoids + * us needing the official header at compile time. + * + * However, we still need the function pointer types, because even + * with statically linked GSSAPI we use the ssh_gss_library wrapper. + */ +#ifdef STATIC_GSSAPI +#include +typedef gss_OID const_gss_OID; /* for our prototypes below */ +#else /* STATIC_GSSAPI */ + +/******************************************************************************* + * GSSAPI Definitions, taken from RFC 2744 + ******************************************************************************/ + +/* GSSAPI Type Definitions */ +typedef uint32 OM_uint32; + +typedef struct gss_OID_desc_struct { + OM_uint32 length; + void *elements; +} gss_OID_desc; +typedef const gss_OID_desc *const_gss_OID; +typedef gss_OID_desc *gss_OID; + +typedef struct gss_OID_set_desc_struct { + size_t count; + gss_OID elements; +} gss_OID_set_desc; +typedef const gss_OID_set_desc *const_gss_OID_set; +typedef gss_OID_set_desc *gss_OID_set; + +typedef struct gss_buffer_desc_struct { + size_t length; + void *value; +} gss_buffer_desc, *gss_buffer_t; + +typedef struct gss_channel_bindings_struct { + OM_uint32 initiator_addrtype; + gss_buffer_desc initiator_address; + OM_uint32 acceptor_addrtype; + gss_buffer_desc acceptor_address; + gss_buffer_desc application_data; +} *gss_channel_bindings_t; + +typedef void * gss_ctx_id_t; +typedef void * gss_name_t; +typedef void * gss_cred_id_t; + +typedef OM_uint32 gss_qop_t; + +/* Flag bits for context-level services. */ + +#define GSS_C_DELEG_FLAG 1 +#define GSS_C_MUTUAL_FLAG 2 +#define GSS_C_REPLAY_FLAG 4 +#define GSS_C_SEQUENCE_FLAG 8 +#define GSS_C_CONF_FLAG 16 +#define GSS_C_INTEG_FLAG 32 +#define GSS_C_ANON_FLAG 64 +#define GSS_C_PROT_READY_FLAG 128 +#define GSS_C_TRANS_FLAG 256 + +/* Credential usage options */ +#define GSS_C_BOTH 0 +#define GSS_C_INITIATE 1 +#define GSS_C_ACCEPT 2 + +/* Status code types for gss_display_status */ +#define GSS_C_GSS_CODE 1 +#define GSS_C_MECH_CODE 2 + +/* The constant definitions for channel-bindings address families */ +#define GSS_C_AF_UNSPEC 0 +#define GSS_C_AF_LOCAL 1 +#define GSS_C_AF_INET 2 +#define GSS_C_AF_IMPLINK 3 +#define GSS_C_AF_PUP 4 +#define GSS_C_AF_CHAOS 5 +#define GSS_C_AF_NS 6 +#define GSS_C_AF_NBS 7 +#define GSS_C_AF_ECMA 8 +#define GSS_C_AF_DATAKIT 9 +#define GSS_C_AF_CCITT 10 +#define GSS_C_AF_SNA 11 +#define GSS_C_AF_DECnet 12 +#define GSS_C_AF_DLI 13 +#define GSS_C_AF_LAT 14 +#define GSS_C_AF_HYLINK 15 +#define GSS_C_AF_APPLETALK 16 +#define GSS_C_AF_BSC 17 +#define GSS_C_AF_DSS 18 +#define GSS_C_AF_OSI 19 +#define GSS_C_AF_X25 21 + +#define GSS_C_AF_NULLADDR 255 + +/* Various Null values */ +#define GSS_C_NO_NAME ((gss_name_t) 0) +#define GSS_C_NO_BUFFER ((gss_buffer_t) 0) +#define GSS_C_NO_OID ((gss_OID) 0) +#define GSS_C_NO_OID_SET ((gss_OID_set) 0) +#define GSS_C_NO_CONTEXT ((gss_ctx_id_t) 0) +#define GSS_C_NO_CREDENTIAL ((gss_cred_id_t) 0) +#define GSS_C_NO_CHANNEL_BINDINGS ((gss_channel_bindings_t) 0) +#define GSS_C_EMPTY_BUFFER {0, NULL} + +/* Major status codes */ +#define GSS_S_COMPLETE 0 + +/* Some "helper" definitions to make the status code macros obvious. */ +#define GSS_C_CALLING_ERROR_OFFSET 24 +#define GSS_C_ROUTINE_ERROR_OFFSET 16 + +#define GSS_C_SUPPLEMENTARY_OFFSET 0 +#define GSS_C_CALLING_ERROR_MASK 0377ul +#define GSS_C_ROUTINE_ERROR_MASK 0377ul +#define GSS_C_SUPPLEMENTARY_MASK 0177777ul + +/* + * The macros that test status codes for error conditions. + * Note that the GSS_ERROR() macro has changed slightly from + * the V1 GSS-API so that it now evaluates its argument + * only once. + */ +#define GSS_CALLING_ERROR(x) \ + (x & (GSS_C_CALLING_ERROR_MASK << GSS_C_CALLING_ERROR_OFFSET)) +#define GSS_ROUTINE_ERROR(x) \ + (x & (GSS_C_ROUTINE_ERROR_MASK << GSS_C_ROUTINE_ERROR_OFFSET)) +#define GSS_SUPPLEMENTARY_INFO(x) \ + (x & (GSS_C_SUPPLEMENTARY_MASK << GSS_C_SUPPLEMENTARY_OFFSET)) +#define GSS_ERROR(x) \ + (x & ((GSS_C_CALLING_ERROR_MASK << GSS_C_CALLING_ERROR_OFFSET) | \ + (GSS_C_ROUTINE_ERROR_MASK << GSS_C_ROUTINE_ERROR_OFFSET))) + +/* Now the actual status code definitions */ + +/* Calling errors: */ +#define GSS_S_CALL_INACCESSIBLE_READ \ + (1ul << GSS_C_CALLING_ERROR_OFFSET) +#define GSS_S_CALL_INACCESSIBLE_WRITE \ + (2ul << GSS_C_CALLING_ERROR_OFFSET) +#define GSS_S_CALL_BAD_STRUCTURE \ + (3ul << GSS_C_CALLING_ERROR_OFFSET) + +/* Routine errors: */ +#define GSS_S_BAD_MECH (1ul << \ + GSS_C_ROUTINE_ERROR_OFFSET) +#define GSS_S_BAD_NAME (2ul << \ + GSS_C_ROUTINE_ERROR_OFFSET) +#define GSS_S_BAD_NAMETYPE (3ul << \ + GSS_C_ROUTINE_ERROR_OFFSET) +#define GSS_S_BAD_BINDINGS (4ul << \ + GSS_C_ROUTINE_ERROR_OFFSET) +#define GSS_S_BAD_STATUS (5ul << \ + GSS_C_ROUTINE_ERROR_OFFSET) +#define GSS_S_BAD_SIG (6ul << \ + GSS_C_ROUTINE_ERROR_OFFSET) +#define GSS_S_BAD_MIC GSS_S_BAD_SIG +#define GSS_S_NO_CRED (7ul << \ + GSS_C_ROUTINE_ERROR_OFFSET) +#define GSS_S_NO_CONTEXT (8ul << \ + GSS_C_ROUTINE_ERROR_OFFSET) +#define GSS_S_DEFECTIVE_TOKEN (9ul << \ + GSS_C_ROUTINE_ERROR_OFFSET) +#define GSS_S_DEFECTIVE_CREDENTIAL (10ul << \ + GSS_C_ROUTINE_ERROR_OFFSET) +#define GSS_S_CREDENTIALS_EXPIRED (11ul << \ + GSS_C_ROUTINE_ERROR_OFFSET) +#define GSS_S_CONTEXT_EXPIRED (12ul << \ + GSS_C_ROUTINE_ERROR_OFFSET) +#define GSS_S_FAILURE (13ul << \ + GSS_C_ROUTINE_ERROR_OFFSET) +#define GSS_S_BAD_QOP (14ul << \ + GSS_C_ROUTINE_ERROR_OFFSET) +#define GSS_S_UNAUTHORIZED (15ul << \ + GSS_C_ROUTINE_ERROR_OFFSET) +#define GSS_S_UNAVAILABLE (16ul << \ + GSS_C_ROUTINE_ERROR_OFFSET) +#define GSS_S_DUPLICATE_ELEMENT (17ul << \ + GSS_C_ROUTINE_ERROR_OFFSET) +#define GSS_S_NAME_NOT_MN (18ul << \ + GSS_C_ROUTINE_ERROR_OFFSET) + +/* Supplementary info bits: */ +#define GSS_S_CONTINUE_NEEDED \ + (1ul << (GSS_C_SUPPLEMENTARY_OFFSET + 0)) +#define GSS_S_DUPLICATE_TOKEN \ + (1ul << (GSS_C_SUPPLEMENTARY_OFFSET + 1)) +#define GSS_S_OLD_TOKEN \ + (1ul << (GSS_C_SUPPLEMENTARY_OFFSET + 2)) +#define GSS_S_UNSEQ_TOKEN \ + (1ul << (GSS_C_SUPPLEMENTARY_OFFSET + 3)) +#define GSS_S_GAP_TOKEN \ + (1ul << (GSS_C_SUPPLEMENTARY_OFFSET + 4)) + +extern const_gss_OID GSS_C_NT_USER_NAME; +extern const_gss_OID GSS_C_NT_MACHINE_UID_NAME; +extern const_gss_OID GSS_C_NT_STRING_UID_NAME; +extern const_gss_OID GSS_C_NT_HOSTBASED_SERVICE_X; +extern const_gss_OID GSS_C_NT_HOSTBASED_SERVICE; +extern const_gss_OID GSS_C_NT_ANONYMOUS; +extern const_gss_OID GSS_C_NT_EXPORT_NAME; + +#endif /* STATIC_GSSAPI */ + +extern const gss_OID GSS_MECH_KRB5; + +/* GSSAPI functions we use. + * TODO: Replace with all GSSAPI functions from RFC? + */ + +/* Calling convention, just in case we need one. */ +#ifndef GSS_CC +#define GSS_CC +#endif /*GSS_CC*/ + +typedef OM_uint32 (GSS_CC *t_gss_release_cred) + (OM_uint32 * /*minor_status*/, + gss_cred_id_t * /*cred_handle*/); + +typedef OM_uint32 (GSS_CC *t_gss_init_sec_context) + (OM_uint32 * /*minor_status*/, + const gss_cred_id_t /*initiator_cred_handle*/, + gss_ctx_id_t * /*context_handle*/, + const gss_name_t /*target_name*/, + const gss_OID /*mech_type*/, + OM_uint32 /*req_flags*/, + OM_uint32 /*time_req*/, + const gss_channel_bindings_t /*input_chan_bindings*/, + const gss_buffer_t /*input_token*/, + gss_OID * /*actual_mech_type*/, + gss_buffer_t /*output_token*/, + OM_uint32 * /*ret_flags*/, + OM_uint32 * /*time_rec*/); + +typedef OM_uint32 (GSS_CC *t_gss_delete_sec_context) + (OM_uint32 * /*minor_status*/, + gss_ctx_id_t * /*context_handle*/, + gss_buffer_t /*output_token*/); + +typedef OM_uint32 (GSS_CC *t_gss_get_mic) + (OM_uint32 * /*minor_status*/, + const gss_ctx_id_t /*context_handle*/, + gss_qop_t /*qop_req*/, + const gss_buffer_t /*message_buffer*/, + gss_buffer_t /*msg_token*/); + +typedef OM_uint32 (GSS_CC *t_gss_display_status) + (OM_uint32 * /*minor_status*/, + OM_uint32 /*status_value*/, + int /*status_type*/, + const gss_OID /*mech_type*/, + OM_uint32 * /*message_context*/, + gss_buffer_t /*status_string*/); + + +typedef OM_uint32 (GSS_CC *t_gss_import_name) + (OM_uint32 * /*minor_status*/, + const gss_buffer_t /*input_name_buffer*/, + const_gss_OID /*input_name_type*/, + gss_name_t * /*output_name*/); + + +typedef OM_uint32 (GSS_CC *t_gss_release_name) + (OM_uint32 * /*minor_status*/, + gss_name_t * /*name*/); + +typedef OM_uint32 (GSS_CC *t_gss_release_buffer) + (OM_uint32 * /*minor_status*/, + gss_buffer_t /*buffer*/); + +struct gssapi_functions { + t_gss_delete_sec_context delete_sec_context; + t_gss_display_status display_status; + t_gss_get_mic get_mic; + t_gss_import_name import_name; + t_gss_init_sec_context init_sec_context; + t_gss_release_buffer release_buffer; + t_gss_release_cred release_cred; + t_gss_release_name release_name; +}; + +#endif /* NO_GSSAPI */ + +#endif /* PUTTY_PGSSAPI_H */ diff --git a/tools/plink/sshgssc.c b/tools/plink/sshgssc.c new file mode 100644 index 000000000..87e2236ab --- /dev/null +++ b/tools/plink/sshgssc.c @@ -0,0 +1,209 @@ +#include "putty.h" + +#include +#include "sshgssc.h" +#include "misc.h" + +#ifndef NO_GSSAPI + +static Ssh_gss_stat ssh_gssapi_indicate_mech(struct ssh_gss_library *lib, + Ssh_gss_buf *mech) +{ + /* Copy constant into mech */ + mech->length = GSS_MECH_KRB5->length; + mech->value = GSS_MECH_KRB5->elements; + return SSH_GSS_OK; +} + +static Ssh_gss_stat ssh_gssapi_import_name(struct ssh_gss_library *lib, + char *host, + Ssh_gss_name *srv_name) +{ + struct gssapi_functions *gss = &lib->u.gssapi; + OM_uint32 min_stat,maj_stat; + gss_buffer_desc host_buf; + char *pStr; + + pStr = dupcat("host@", host, NULL); + + host_buf.value = pStr; + host_buf.length = strlen(pStr); + + maj_stat = gss->import_name(&min_stat, &host_buf, + GSS_C_NT_HOSTBASED_SERVICE, srv_name); + /* Release buffer */ + sfree(pStr); + if (maj_stat == GSS_S_COMPLETE) return SSH_GSS_OK; + return SSH_GSS_FAILURE; +} + +static Ssh_gss_stat ssh_gssapi_acquire_cred(struct ssh_gss_library *lib, + Ssh_gss_ctx *ctx) +{ + gssapi_ssh_gss_ctx *gssctx = snew(gssapi_ssh_gss_ctx); + + gssctx->maj_stat = gssctx->min_stat = GSS_S_COMPLETE; + gssctx->ctx = GSS_C_NO_CONTEXT; + *ctx = (Ssh_gss_ctx) gssctx; + + return SSH_GSS_OK; +} + +static Ssh_gss_stat ssh_gssapi_init_sec_context(struct ssh_gss_library *lib, + Ssh_gss_ctx *ctx, + Ssh_gss_name srv_name, + int to_deleg, + Ssh_gss_buf *recv_tok, + Ssh_gss_buf *send_tok) +{ + struct gssapi_functions *gss = &lib->u.gssapi; + gssapi_ssh_gss_ctx *gssctx = (gssapi_ssh_gss_ctx*) *ctx; + OM_uint32 ret_flags; + + if (to_deleg) to_deleg = GSS_C_DELEG_FLAG; + gssctx->maj_stat = gss->init_sec_context(&gssctx->min_stat, + GSS_C_NO_CREDENTIAL, + &gssctx->ctx, + srv_name, + (gss_OID) GSS_MECH_KRB5, + GSS_C_MUTUAL_FLAG | + GSS_C_INTEG_FLAG | to_deleg, + 0, + GSS_C_NO_CHANNEL_BINDINGS, + recv_tok, + NULL, /* ignore mech type */ + send_tok, + &ret_flags, + NULL); /* ignore time_rec */ + + if (gssctx->maj_stat == GSS_S_COMPLETE) return SSH_GSS_S_COMPLETE; + if (gssctx->maj_stat == GSS_S_CONTINUE_NEEDED) return SSH_GSS_S_CONTINUE_NEEDED; + return SSH_GSS_FAILURE; +} + +static Ssh_gss_stat ssh_gssapi_display_status(struct ssh_gss_library *lib, + Ssh_gss_ctx ctx, + Ssh_gss_buf *buf) +{ + struct gssapi_functions *gss = &lib->u.gssapi; + gssapi_ssh_gss_ctx *gssctx = (gssapi_ssh_gss_ctx *) ctx; + OM_uint32 lmin,lmax; + OM_uint32 ccc; + gss_buffer_desc msg_maj=GSS_C_EMPTY_BUFFER; + gss_buffer_desc msg_min=GSS_C_EMPTY_BUFFER; + + /* Return empty buffer in case of failure */ + SSH_GSS_CLEAR_BUF(buf); + + /* get first mesg from GSS */ + ccc=0; + lmax=gss->display_status(&lmin,gssctx->maj_stat,GSS_C_GSS_CODE,(gss_OID) GSS_MECH_KRB5,&ccc,&msg_maj); + + if (lmax != GSS_S_COMPLETE) return SSH_GSS_FAILURE; + + /* get first mesg from Kerberos */ + ccc=0; + lmax=gss->display_status(&lmin,gssctx->min_stat,GSS_C_MECH_CODE,(gss_OID) GSS_MECH_KRB5,&ccc,&msg_min); + + if (lmax != GSS_S_COMPLETE) { + gss->release_buffer(&lmin, &msg_maj); + return SSH_GSS_FAILURE; + } + + /* copy data into buffer */ + buf->length = msg_maj.length + msg_min.length + 1; + buf->value = snewn(buf->length + 1, char); + + /* copy mem */ + memcpy((char *)buf->value, msg_maj.value, msg_maj.length); + ((char *)buf->value)[msg_maj.length] = ' '; + memcpy((char *)buf->value + msg_maj.length + 1, msg_min.value, msg_min.length); + ((char *)buf->value)[buf->length] = 0; + /* free mem & exit */ + gss->release_buffer(&lmin, &msg_maj); + gss->release_buffer(&lmin, &msg_min); + return SSH_GSS_OK; +} + +static Ssh_gss_stat ssh_gssapi_free_tok(struct ssh_gss_library *lib, + Ssh_gss_buf *send_tok) +{ + struct gssapi_functions *gss = &lib->u.gssapi; + OM_uint32 min_stat,maj_stat; + maj_stat = gss->release_buffer(&min_stat, send_tok); + + if (maj_stat == GSS_S_COMPLETE) return SSH_GSS_OK; + return SSH_GSS_FAILURE; +} + +static Ssh_gss_stat ssh_gssapi_release_cred(struct ssh_gss_library *lib, + Ssh_gss_ctx *ctx) +{ + struct gssapi_functions *gss = &lib->u.gssapi; + gssapi_ssh_gss_ctx *gssctx = (gssapi_ssh_gss_ctx *) *ctx; + OM_uint32 min_stat; + OM_uint32 maj_stat=GSS_S_COMPLETE; + + if (gssctx == NULL) return SSH_GSS_FAILURE; + if (gssctx->ctx != GSS_C_NO_CONTEXT) + maj_stat = gss->delete_sec_context(&min_stat,&gssctx->ctx,GSS_C_NO_BUFFER); + sfree(gssctx); + + if (maj_stat == GSS_S_COMPLETE) return SSH_GSS_OK; + return SSH_GSS_FAILURE; +} + + +static Ssh_gss_stat ssh_gssapi_release_name(struct ssh_gss_library *lib, + Ssh_gss_name *srv_name) +{ + struct gssapi_functions *gss = &lib->u.gssapi; + OM_uint32 min_stat,maj_stat; + maj_stat = gss->release_name(&min_stat, srv_name); + + if (maj_stat == GSS_S_COMPLETE) return SSH_GSS_OK; + return SSH_GSS_FAILURE; +} + +static Ssh_gss_stat ssh_gssapi_get_mic(struct ssh_gss_library *lib, + Ssh_gss_ctx ctx, Ssh_gss_buf *buf, + Ssh_gss_buf *hash) +{ + struct gssapi_functions *gss = &lib->u.gssapi; + gssapi_ssh_gss_ctx *gssctx = (gssapi_ssh_gss_ctx *) ctx; + if (gssctx == NULL) return SSH_GSS_FAILURE; + return gss->get_mic(&(gssctx->min_stat), gssctx->ctx, 0, buf, hash); +} + +static Ssh_gss_stat ssh_gssapi_free_mic(struct ssh_gss_library *lib, + Ssh_gss_buf *hash) +{ + /* On Unix this is the same freeing process as ssh_gssapi_free_tok. */ + return ssh_gssapi_free_tok(lib, hash); +} + +void ssh_gssapi_bind_fns(struct ssh_gss_library *lib) +{ + lib->indicate_mech = ssh_gssapi_indicate_mech; + lib->import_name = ssh_gssapi_import_name; + lib->release_name = ssh_gssapi_release_name; + lib->init_sec_context = ssh_gssapi_init_sec_context; + lib->free_tok = ssh_gssapi_free_tok; + lib->acquire_cred = ssh_gssapi_acquire_cred; + lib->release_cred = ssh_gssapi_release_cred; + lib->get_mic = ssh_gssapi_get_mic; + lib->free_mic = ssh_gssapi_free_mic; + lib->display_status = ssh_gssapi_display_status; +} + +#else + +/* Dummy function so this source file defines something if NO_GSSAPI + is defined. */ + +int ssh_gssapi_init(void) +{ + return 0; +} + +#endif diff --git a/tools/plink/sshgssc.h b/tools/plink/sshgssc.h new file mode 100644 index 000000000..0f271f84a --- /dev/null +++ b/tools/plink/sshgssc.h @@ -0,0 +1,23 @@ +#ifndef PUTTY_SSHGSSC_H +#define PUTTY_SSHGSSC_H +#include "putty.h" +#ifndef NO_GSSAPI + +#include "pgssapi.h" +#include "sshgss.h" + +typedef struct gssapi_ssh_gss_ctx { + OM_uint32 maj_stat; + OM_uint32 min_stat; + gss_ctx_id_t ctx; +} gssapi_ssh_gss_ctx; + +void ssh_gssapi_bind_fns(struct ssh_gss_library *lib); + +#else + +int ssh_gssapi_init(void); + +#endif /*NO_GSSAPI*/ + +#endif /*PUTTY_SSHGSSC_H*/ -- cgit v1.2.3