diff options
Diffstat (limited to 'src/lib/rpc/auth_gssapi_misc.c')
| -rw-r--r-- | src/lib/rpc/auth_gssapi_misc.c | 334 |
1 files changed, 334 insertions, 0 deletions
diff --git a/src/lib/rpc/auth_gssapi_misc.c b/src/lib/rpc/auth_gssapi_misc.c new file mode 100644 index 000000000000..a05ea19eb7c4 --- /dev/null +++ b/src/lib/rpc/auth_gssapi_misc.c @@ -0,0 +1,334 @@ +/* + * Copyright 1993 OpenVision Technologies, Inc., All Rights Reserved. + * + */ + +#include <gssrpc/rpc.h> +#include <stdio.h> + +#include <gssapi/gssapi.h> +#include <gssrpc/auth_gssapi.h> + +#include "gssrpcint.h" + +#ifdef __CODECENTER__ +#define DEBUG_GSSAPI 1 +#endif + +#ifdef DEBUG_GSSAPI +int misc_debug_gssapi = DEBUG_GSSAPI; +extern void gssrpcint_printf(const char *, ...); +#define L_PRINTF(l,args) if (misc_debug_gssapi >= l) gssrpcint_printf args +#define PRINTF(args) L_PRINTF(99, args) +#define AUTH_GSSAPI_DISPLAY_STATUS(args) \ + if (misc_debug_gssapi) auth_gssapi_display_status args +#else +#define PRINTF(args) +#define L_PRINTF(l, args) +#define AUTH_GSSAPI_DISPLAY_STATUS(args) +#endif + +static void auth_gssapi_display_status_1 + (char *, OM_uint32, int, int); + +bool_t xdr_gss_buf( + XDR *xdrs, + gss_buffer_t buf) +{ + /* + * On decode, xdr_bytes will only allocate buf->value if the + * length read in is < maxsize (last arg). This is dumb, because + * the whole point of allocating memory is so that I don't *have* + * to know the maximum length. -1 effectively disables this + * braindamage. + */ + bool_t result; + /* Fix type mismatches between APIs. */ + unsigned int length = buf->length; + result = xdr_bytes(xdrs, (char **) &buf->value, &length, + (xdrs->x_op == XDR_DECODE && buf->value == NULL) + ? (unsigned int) -1 : (unsigned int) buf->length); + buf->length = length; + return result; +} + +bool_t xdr_authgssapi_creds( + XDR *xdrs, + auth_gssapi_creds *creds) +{ + if (! xdr_u_int32(xdrs, &creds->version) || + ! xdr_bool(xdrs, &creds->auth_msg) || + ! xdr_gss_buf(xdrs, &creds->client_handle)) + return FALSE; + return TRUE; +} + +bool_t xdr_authgssapi_init_arg( + XDR *xdrs, + auth_gssapi_init_arg *init_arg) +{ + if (! xdr_u_int32(xdrs, &init_arg->version) || + ! xdr_gss_buf(xdrs, &init_arg->token)) + return FALSE; + return TRUE; +} + +bool_t xdr_authgssapi_init_res( + XDR *xdrs, + auth_gssapi_init_res *init_res) +{ + if (! xdr_u_int32(xdrs, &init_res->version) || + ! xdr_gss_buf(xdrs, &init_res->client_handle) || + ! xdr_u_int32(xdrs, &init_res->gss_major) || + ! xdr_u_int32(xdrs, &init_res->gss_minor) || + ! xdr_gss_buf(xdrs, &init_res->token) || + ! xdr_gss_buf(xdrs, &init_res->signed_isn)) + return FALSE; + return TRUE; +} + +bool_t auth_gssapi_seal_seq( + gss_ctx_id_t context, + uint32_t seq_num, + gss_buffer_t out_buf) +{ + gss_buffer_desc in_buf; + OM_uint32 gssstat, minor_stat; + uint32_t nl_seq_num; + + nl_seq_num = htonl(seq_num); + + in_buf.length = sizeof(uint32_t); + in_buf.value = (char *) &nl_seq_num; + gssstat = gss_seal(&minor_stat, context, 0, GSS_C_QOP_DEFAULT, + &in_buf, NULL, out_buf); + if (gssstat != GSS_S_COMPLETE) { + PRINTF(("gssapi_seal_seq: failed\n")); + AUTH_GSSAPI_DISPLAY_STATUS(("sealing sequence number", + gssstat, minor_stat)); + return FALSE; + } + return TRUE; +} + +bool_t auth_gssapi_unseal_seq( + gss_ctx_id_t context, + gss_buffer_t in_buf, + uint32_t *seq_num) +{ + gss_buffer_desc out_buf; + OM_uint32 gssstat, minor_stat; + uint32_t nl_seq_num; + + gssstat = gss_unseal(&minor_stat, context, in_buf, &out_buf, + NULL, NULL); + if (gssstat != GSS_S_COMPLETE) { + PRINTF(("gssapi_unseal_seq: failed\n")); + AUTH_GSSAPI_DISPLAY_STATUS(("unsealing sequence number", + gssstat, minor_stat)); + return FALSE; + } else if (out_buf.length != sizeof(uint32_t)) { + PRINTF(("gssapi_unseal_seq: unseal gave %d bytes\n", + (int) out_buf.length)); + gss_release_buffer(&minor_stat, &out_buf); + return FALSE; + } + + nl_seq_num = *((uint32_t *) out_buf.value); + *seq_num = (uint32_t) ntohl(nl_seq_num); + gss_release_buffer(&minor_stat, &out_buf); + + return TRUE; +} + +void auth_gssapi_display_status( + char *msg, + OM_uint32 major, + OM_uint32 minor) +{ + auth_gssapi_display_status_1(msg, major, GSS_C_GSS_CODE, 0); + auth_gssapi_display_status_1(msg, minor, GSS_C_MECH_CODE, 0); +} + +static void auth_gssapi_display_status_1( + char *m, + OM_uint32 code, + int type, + int rec) +{ + OM_uint32 gssstat, minor_stat; + gss_buffer_desc msg; + OM_uint32 msg_ctx; + + msg_ctx = 0; + while (1) { + gssstat = gss_display_status(&minor_stat, code, + type, GSS_C_NULL_OID, + &msg_ctx, &msg); + if (gssstat != GSS_S_COMPLETE) { + if (!rec) { + auth_gssapi_display_status_1(m,gssstat,GSS_C_GSS_CODE,1); + auth_gssapi_display_status_1(m, minor_stat, + GSS_C_MECH_CODE, 1); + } else { + fputs ("GSS-API authentication error ", stderr); + fwrite (msg.value, msg.length, 1, stderr); + fputs (": recursive failure!\n", stderr); + } + return; + } + + fprintf (stderr, "GSS-API authentication error %s: ", m); + fwrite (msg.value, msg.length, 1, stderr); + putc ('\n', stderr); + if (misc_debug_gssapi) + gssrpcint_printf("GSS-API authentication error %s: %*s\n", + m, (int)msg.length, (char *) msg.value); + (void) gss_release_buffer(&minor_stat, &msg); + + if (!msg_ctx) + break; + } +} + +bool_t auth_gssapi_wrap_data( + OM_uint32 *major, + OM_uint32 *minor, + gss_ctx_id_t context, + uint32_t seq_num, + XDR *out_xdrs, + bool_t (*xdr_func)(), + caddr_t xdr_ptr) +{ + gss_buffer_desc in_buf, out_buf; + XDR temp_xdrs; + int conf_state; + unsigned int length; + + PRINTF(("gssapi_wrap_data: starting\n")); + + *major = GSS_S_COMPLETE; + *minor = 0; /* assumption */ + + xdralloc_create(&temp_xdrs, XDR_ENCODE); + + /* serialize the sequence number into local memory */ + PRINTF(("gssapi_wrap_data: encoding seq_num %d\n", seq_num)); + if (! xdr_u_int32(&temp_xdrs, &seq_num)) { + PRINTF(("gssapi_wrap_data: serializing seq_num failed\n")); + XDR_DESTROY(&temp_xdrs); + return FALSE; + } + + /* serialize the arguments into local memory */ + if (!(*xdr_func)(&temp_xdrs, xdr_ptr)) { + PRINTF(("gssapi_wrap_data: serializing arguments failed\n")); + XDR_DESTROY(&temp_xdrs); + return FALSE; + } + + in_buf.length = xdr_getpos(&temp_xdrs); + in_buf.value = xdralloc_getdata(&temp_xdrs); + + *major = gss_seal(minor, context, 1, + GSS_C_QOP_DEFAULT, &in_buf, &conf_state, + &out_buf); + if (*major != GSS_S_COMPLETE) { + XDR_DESTROY(&temp_xdrs); + return FALSE; + } + + PRINTF(("gssapi_wrap_data: %d bytes data, %d bytes sealed\n", + (int) in_buf.length, (int) out_buf.length)); + + /* write the token */ + length = out_buf.length; + if (! xdr_bytes(out_xdrs, (char **) &out_buf.value, + (unsigned int *) &length, + out_buf.length)) { + PRINTF(("gssapi_wrap_data: serializing encrypted data failed\n")); + XDR_DESTROY(&temp_xdrs); + return FALSE; + } + + *major = gss_release_buffer(minor, &out_buf); + + PRINTF(("gssapi_wrap_data: succeeding\n\n")); + XDR_DESTROY(&temp_xdrs); + return TRUE; +} + +bool_t auth_gssapi_unwrap_data( + OM_uint32 *major, + OM_uint32 *minor, + gss_ctx_id_t context, + uint32_t seq_num, + XDR *in_xdrs, + bool_t (*xdr_func)(), + caddr_t xdr_ptr) +{ + gss_buffer_desc in_buf, out_buf; + XDR temp_xdrs; + uint32_t verf_seq_num; + int conf, qop; + unsigned int length; + + PRINTF(("gssapi_unwrap_data: starting\n")); + + *major = GSS_S_COMPLETE; + *minor = 0; /* assumption */ + + in_buf.value = NULL; + out_buf.value = NULL; + if (! xdr_bytes(in_xdrs, (char **) &in_buf.value, + &length, (unsigned int) -1)) { + PRINTF(("gssapi_unwrap_data: deserializing encrypted data failed\n")); + temp_xdrs.x_op = XDR_FREE; + (void)xdr_bytes(&temp_xdrs, (char **) &in_buf.value, &length, + (unsigned int) -1); + return FALSE; + } + in_buf.length = length; + + *major = gss_unseal(minor, context, &in_buf, &out_buf, &conf, + &qop); + free(in_buf.value); + if (*major != GSS_S_COMPLETE) + return FALSE; + + PRINTF(("gssapi_unwrap_data: %llu bytes data, %llu bytes sealed\n", + (unsigned long long)out_buf.length, + (unsigned long long)in_buf.length)); + + xdrmem_create(&temp_xdrs, out_buf.value, out_buf.length, XDR_DECODE); + + /* deserialize the sequence number */ + if (! xdr_u_int32(&temp_xdrs, &verf_seq_num)) { + PRINTF(("gssapi_unwrap_data: deserializing verf_seq_num failed\n")); + gss_release_buffer(minor, &out_buf); + XDR_DESTROY(&temp_xdrs); + return FALSE; + } + if (verf_seq_num != seq_num) { + PRINTF(("gssapi_unwrap_data: seq %d specified, read %d\n", + seq_num, verf_seq_num)); + gss_release_buffer(minor, &out_buf); + XDR_DESTROY(&temp_xdrs); + return FALSE; + } + PRINTF(("gssapi_unwrap_data: unwrap seq_num %d okay\n", verf_seq_num)); + + /* deserialize the arguments into xdr_ptr */ + if (! (*xdr_func)(&temp_xdrs, xdr_ptr)) { + PRINTF(("gssapi_unwrap_data: deserializing arguments failed\n")); + gss_release_buffer(minor, &out_buf); + XDR_DESTROY(&temp_xdrs); + return FALSE; + } + + PRINTF(("gssapi_unwrap_data: succeeding\n\n")); + + gss_release_buffer(minor, &out_buf); + XDR_DESTROY(&temp_xdrs); + return TRUE; +} |