+++ /dev/null
-/* #ident "@(#)g_initialize.c 1.2 96/02/06 SMI" */
-
-/*
- * Copyright 1996 by Sun Microsystems, Inc.
- *
- * Permission to use, copy, modify, distribute, and sell this software
- * and its documentation for any purpose is hereby granted without fee,
- * provided that the above copyright notice appears in all copies and
- * that both that copyright notice and this permission notice appear in
- * supporting documentation, and that the name of Sun Microsystems not be used
- * in advertising or publicity pertaining to distribution of the software
- * without specific, written prior permission. Sun Microsystems makes no
- * representations about the suitability of this software for any
- * purpose. It is provided "as is" without express or implied warranty.
- *
- * SUN MICROSYSTEMS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL SUN MICROSYSTEMS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
- * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
- * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
- * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- * PERFORMANCE OF THIS SOFTWARE.
- */
-
-/*
- * This function will initialize the gssapi mechglue library
- */
-
-#include "config.h"
-#include "mglueP.h"
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-
-#include <stdio.h>
-#include <string.h>
-#include <ctype.h>
-#include <errno.h>
-
-#ifdef USE_SOLARIS_SHARED_LIBRARIES
-#include <dlfcn.h>
-
-#define MECH_CONF "/etc/mech.conf"
-#define MECH_SYM "gss_mech_initialize"
-
-static void solaris_initialize (void);
-#endif /* USE_SOLARIS_SHARED_LIBRARIES */
-
-#ifdef __linux__
-#define USE_LINUX_SHARED_LIBRARIES
-#endif
-
-#ifdef USE_LINUX_SHARED_LIBRARIES
-#include <dlfcn.h>
-#define MECH_CONF "/etc/gssapi_mech.conf"
-#define MECH_SYM "gss_mech_initialize"
-static void linux_initialize (void);
-#endif /* USE_LINUX_SHARED_LIBRARIES */
-
-#define g_OID_equal(o1,o2) \
- (((o1)->length == (o2)->length) && \
- (memcmp((o1)->elements,(o2)->elements,(int) (o1)->length) == 0))
-
-extern gss_mechanism krb5_gss_initialize();
-
-static int _gss_initialized = 0;
-
-static struct gss_config null_mech = {
- {0,NULL}};
-
-gss_mechanism *__gss_mechs_array = NULL;
-
-/*
- * This function will add a new mechanism to the mechs_array
- */
-
-static OM_uint32
-add_mechanism (mech, replace)
- gss_mechanism mech;
- int replace;
-{
- gss_mechanism * temp_array;
- gss_OID_set mech_names;
- OM_uint32 minor_status, major_status;
- unsigned int i;
-
- if (mech == NULL)
- return GSS_S_COMPLETE;
-
- /* initialize the mechs_array if it hasn't already been initialized */
- if (__gss_mechs_array == NULL) {
- __gss_mechs_array = (gss_mechanism *) malloc (sizeof(gss_mechanism));
-
- if (__gss_mechs_array == NULL)
- return ENOMEM;
-
- __gss_mechs_array[0] = &null_mech;
- }
-
- /*
- * Find the length of __gss_mechs_array, and look for an existing
- * entry for this OID
- */
- for (i=0; __gss_mechs_array[i]->mech_type.length != 0; i++) {
- if (!g_OID_equal(&__gss_mechs_array[i]->mech_type,
- &mech->mech_type))
- continue;
-
- /* We found a match. Replace it? */
- if (!replace)
- return GSS_S_FAILURE;
-
- __gss_mechs_array[i] = mech;
- return GSS_S_COMPLETE;
- }
-
- /* we didn't find it -- add it to the end of the __gss_mechs_array */
- temp_array = (gss_mechanism *) realloc(__gss_mechs_array,
- (i+2)*sizeof(gss_mechanism));
-
- if (temp_array == NULL)
- return ENOMEM;
-
- temp_array[i++] = mech;
- temp_array[i] = &null_mech;
-
- __gss_mechs_array = temp_array;
-
- /*
- * OK, now let's register all of the name types this mechanism
- * knows how to deal with.
- */
- major_status = gss_inquire_names_for_mech(&minor_status, &mech->mech_type,
- &mech_names);
- if (major_status != GSS_S_COMPLETE)
- return (GSS_S_COMPLETE);
- for (i=0; i < mech_names->count; i++) {
- gss_add_mech_name_type(&minor_status, &mech_names->elements[i],
- &mech->mech_type);
- }
- (void) gss_release_oid_set(&minor_status, &mech_names);
-
- return GSS_S_COMPLETE;
-}
-
-void gss_initialize ()
-{
- /* Make sure we've not run already */
- if (_gss_initialized)
- return;
- _gss_initialized = 1;
-
-#ifdef USE_SOLARIS_SHARED_LIBRARIES
- solaris_initialize();
-
-#elif defined(USE_LINUX_SHARED_LIBRARIES)
- linux_initialize();
-
-#else
- {
- gss_mechanism mech;
-
- /*
- * Use hard-coded in mechanisms... I need to know what mechanisms
- * are supported... As more mechanisms become supported, they
- * should be added here, unless shared libraries are used.
- */
-
- /* Initialize the krb5 mechanism */
- mech = (gss_mechanism)krb5_gss_initialize();
- if (mech)
- add_mechanism (mech, 1);
- }
-
-#endif /* USE_SOLARIS_SHARED_LIBRARIES */
-
-#if !defined(macintosh)
- if (__gss_mechs_array == NULL) { /* this is very bad! */
- fprintf(stderr,"gss_initialize fatal error: no mechanisms loaded!\n");
- exit(-1);
- }
-#else
- /*
- * Nothing for now, since this should never happen using static
- * mechanism loading.
- */
-#endif
-
- return;
-}
-
-#ifdef USE_SOLARIS_SHARED_LIBRARIES
-/*
- * read the configuration file to find out what mechanisms to
- * load, load them, and then load the mechanism defitions in
- * and add the mechanisms
- */
-static void solaris_initialize ()
-{
- char buffer[BUFSIZ], *filename, *symname, *endp;
- FILE *conffile;
- void *dl;
- gss_mechanism (*sym)(void), mech;
-
- if ((filename = getenv("GSSAPI_MECH_CONF")) == NULL)
- filename = MECH_CONF;
-
- if ((conffile = fopen(filename, "r")) == NULL) {
- fprintf(stderr,"fatal error: unable to open %s:"
- " errno %d (%s)\n", filename, errno, strerror(errno));
- return;
- }
-
- while (fgets (buffer, BUFSIZ, conffile) != NULL) {
- /* ignore lines beginning with # */
- if (*buffer == '#')
- continue;
-
- /* find the first white-space character after the filename */
- for (symname = buffer; *symname && !isspace(*symname); symname++);
-
- /* Now find the first non-white-space character */
- if (*symname) {
- *symname = '\0';
- symname++;
- while (*symname && isspace(*symname))
- symname++;
- }
-
- if (! *symname)
- symname = MECH_SYM;
- else {
- /* Find the end of the symname and make sure it is NULL-terminated */
- for (endp = symname; *endp && !isspace(*endp); endp++);
- if (*endp)
- *endp = '\0';
- }
-
- if ((dl = dlopen(buffer, RTLD_NOW)) == NULL) {
- /* for debugging only */
- fprintf(stderr,"can't open %s: %s\n",buffer, dlerror());
- continue;
- }
-
- if ((sym = (gss_mechanism (*)(void))dlsym(dl, symname)) == NULL) {
- dlclose(dl);
- continue;
- }
-
- /* Call the symbol to get the mechanism table */
- mech = sym();
-
- /* And add the mechanism (or close the shared library) */
- if (mech)
- add_mechanism (mech, 1);
- else
- dlclose(dl);
-
- } /* while */
-
- return;
-}
-#endif /* USE_SOLARIS_SHARED_LIBRARIES */
-
-#ifdef USE_LINUX_SHARED_LIBRARIES
-extern gss_mechanism internal_krb5_gss_initialize(void *dl);
-
-/*
- * read the configuration file to find out what mechanisms to
- * load, load them, and then load the mechanism defitions in
- * and add the mechanisms
- */
-static void linux_initialize ()
-{
- char buffer[BUFSIZ], *filename, *symname, *endp, *err_string;
- FILE *conffile;
- void *dl;
- gss_mechanism (*sym)(void), mech;
-
- if ((filename = getenv("GSSAPI_MECH_CONF")) == NULL)
- filename = MECH_CONF;
-
- if ((conffile = fopen(filename, "r")) == NULL) {
- fprintf(stderr,"fatal error: unable to open %s:"
- " errno %d (%s)\n", filename, errno, strerror(errno));
- return;
- }
-
- while (fgets (buffer, BUFSIZ, conffile) != NULL) {
- /* ignore lines beginning with # */
- if (*buffer == '#')
- continue;
-
- /* find the first white-space character after the filename */
- for (symname = buffer; *symname && !isspace(*symname); symname++);
-
- /* Now find the first non-white-space character */
- if (*symname) {
- *symname = '\0';
- symname++;
- while (*symname && isspace(*symname))
- symname++;
- }
-
- if (! *symname)
- symname = MECH_SYM;
- else {
- /* Find the end of the symname and make sure it is
- * NULL-terminated */
- for (endp = symname; *endp && !isspace(*endp); endp++);
- if (*endp)
- *endp = '\0';
- }
-
- if ((dl = dlopen(buffer, RTLD_NOW)) == NULL) {
- /* for debugging only */
- fprintf(stderr,"can't open %s: %s\n",buffer, dlerror());
- continue;
- }
-
-#if defined(HAVE_KRB5) && defined(HAVE_HEIMDAL)
-#error Should not have both HAVE_KRB5 and HAVE_HEIMDAL defined!!
-#endif
-
-#ifdef HAVE_KRB5
- /* Special case for dealing with MIT krb5 mechanism */
- if (strcmp(symname, "mechglue_internal_krb5_init") == 0) {
-#ifdef DEBUG
- fprintf(stderr, "Using special MIT initialization\n");
-#endif
- mech = internal_krb5_gss_initialize(dl);
- }
- else
-#endif
-
-#ifdef HAVE_HEIMDAL
- /* Special case for dealing with heimdal krb5 mechanism */
- if (strcmp(symname, "mechglue_internal_heimdal_init") == 0) {
-#ifdef DEBUG
- fprintf(stderr, "Using special Heimdal initialization\n");
-#endif
- mech = internal_heimdal_gss_initialize(dl);
- }
- else
-#endif
- {
- if ((sym = (gss_mechanism (*)(void))dlsym(dl, symname)) == NULL) {
- if ((err_string = dlerror()) != NULL) {
- fprintf(stderr, "%s: searching for symbol '%s' in '%s'\n",
- err_string, symname, buffer);
- dlclose(dl);
- }
- continue;
- }
-
- /* Call the symbol to get the mechanism table */
- mech = sym();
- }
-
- /* And add the mechanism (or close the shared library) */
- if (mech) {
-#ifdef DEBUG
- fprintf(stderr, "Adding mechanism for library '%s'\n", buffer);
-#endif
- add_mechanism (mech, 1);
- }
- else {
-#ifdef DEBUG
- fprintf(stderr,
- "Failed to initialize mechanism for library '%s'\n",
- buffer);
-#endif
- dlclose(dl);
- }
-
- } /* while */
-
- return;
-}
-#endif /* USE_LINUX_SHARED_LIBRARIES */
projects / nfs-utils.git / blobdiff