#include <ctype.h>
#include <errno.h>
-#include <dlfcn.h>
-
-#define MECH_CONF "/etc/gss/mech"
-
-#define MECH_LIB_PREFIX1 "/usr/lib/"
-
-#define MECH_LIB_PREFIX2 ""
-
-#define MECH_LIB_DIR "gss/"
-
-#define MECH_LIB_PREFIX MECH_LIB_PREFIX1 MECH_LIB_PREFIX2 MECH_LIB_DIR
-
-#define MECH_SYM "gss_mech_initialize"
-
#define M_DEFAULT "default"
-#include <sys/stat.h>
-
#include "k5-thread.h"
/* Local functions */
static gss_mech_info searchMechList(const gss_OID);
-static void loadConfigFile(const char *);
static void updateMechList(void);
static void register_mech(gss_mechanism, const char *, void *);
static gss_mech_info g_mechList = NULL;
static gss_mech_info g_mechListTail = NULL;
static k5_mutex_t g_mechListLock = K5_MUTEX_PARTIAL_INITIALIZER;
-static time_t g_confFileModTime = (time_t)0;
-static time_t g_mechSetTime = (time_t)0;
static gss_OID_set_desc g_mechSet = { 0, NULL };
static k5_mutex_t g_mechSetLock = K5_MUTEX_PARTIAL_INITIALIZER;
OM_uint32 *minorStatus;
gss_OID_set *mechSet;
{
- char *fileName;
int i, j;
gss_OID curItem;
if (mechSet == NULL)
return (GSS_S_CALL_INACCESSIBLE_WRITE);
- fileName = MECH_CONF;
-
-#if 0
- /*
- * If we have already computed the mechanisms supported and if it
- * is still valid; make a copy and return to caller,
- * otherwise build it first.
- */
- if ((stat(fileName, &fileInfo) == 0 &&
- fileInfo.st_mtime > g_mechSetTime)) {
- } /* if g_mechSet is out of date or not initialized */
-#endif
if (build_mechSet())
return GSS_S_FAILURE;
*/
(void) k5_mutex_lock(&g_mechListLock);
-#if 0
- /*
- * this checks for the case when we need to re-construct the
- * g_mechSet structure, but the mechanism list is upto date
- * (because it has been read by someone calling
- * gssint_get_mechanism)
- */
- if (fileInfo.st_mtime > g_confFileModTime)
- {
- g_confFileModTime = fileInfo.st_mtime;
- loadConfigFile(fileName);
- }
-#endif
-
updateMechList();
/*
}
}
-#if 0
- g_mechSetTime = fileInfo.st_mtime;
-#endif
(void) k5_mutex_unlock(&g_mechSetLock);
(void) k5_mutex_unlock(&g_mechListLock);
static void
updateMechList(void)
{
- char *fileName;
init_hardcoded();
- fileName = MECH_CONF;
-
-#if 0
- /* check if mechList needs updating */
- if (stat(fileName, &fileInfo) == 0 &&
- (fileInfo.st_mtime > g_confFileModTime)) {
- loadConfigFile(fileName);
- g_confFileModTime = fileInfo.st_mtime;
- }
-#endif
+
} /* updateMechList */
/*
gssint_get_mechanism(gss_OID oid)
{
gss_mech_info aMech;
- gss_mechanism (*sym)(const gss_OID);
- void *dl;
if (gssint_initialize_library())
return NULL;
if (aMech->mech) {
(void) k5_mutex_unlock(&g_mechListLock);
return (aMech->mech);
+ } else {
+ return NULL;
}
-
- /* we found the mechanism, but it is not loaded */
- if ((dl = dlopen(aMech->uLibName, RTLD_NOW)) == NULL) {
-#if 0
- (void) syslog(LOG_INFO, "libgss dlopen(%s): %s\n",
- aMech->uLibName, dlerror());
-#endif
- (void) k5_mutex_unlock(&g_mechListLock);
- return ((gss_mechanism)NULL);
- }
-
- if ((sym = (gss_mechanism (*)(const gss_OID))dlsym(dl, MECH_SYM))
- == NULL) {
- (void) dlclose(dl);
-#if 0
- (void) syslog(LOG_INFO, "unable to initialize mechanism"
- " library [%s]\n", aMech->uLibName);
-#endif
- (void) k5_mutex_unlock(&g_mechListLock);
- return ((gss_mechanism)NULL);
- }
-
- /* Call the symbol to get the mechanism table */
- aMech->mech = (*sym)(aMech->mech_type);
-
- if (aMech->mech == NULL) {
- (void) dlclose(dl);
-#if 0
- (void) syslog(LOG_INFO, "unable to initialize mechanism"
- " library [%s]\n", aMech->uLibName);
-#endif
- (void) k5_mutex_unlock(&g_mechListLock);
- return ((gss_mechanism)NULL);
- }
-
- aMech->dl_handle = dl;
-
- (void) k5_mutex_unlock(&g_mechListLock);
- return (aMech->mech);
} /* gssint_get_mechanism */
/* none found */
return ((gss_mech_info) NULL);
} /* searchMechList */
-
-
-/*
- * loads the configuration file
- * this is called while having a mutex lock on the mechanism list
- * entries for libraries that have been loaded can't be modified
- * mechNameStr and mech_type fields are not updated during updates
- */
-static void loadConfigFile(fileName)
-const char *fileName;
-{
- char buffer[BUFSIZ], *oidStr, *oid, *sharedLib, *kernMod, *endp;
- char *modOptions;
- char sharedPath[sizeof (MECH_LIB_PREFIX) + BUFSIZ];
- char *tmpStr;
- FILE *confFile;
- gss_OID mechOid;
- gss_mech_info aMech, tmp;
- OM_uint32 minor;
- gss_buffer_desc oidBuf;
-
- if ((confFile = fopen(fileName, "r")) == NULL) {
- return;
- }
-
- (void) memset(buffer, 0, sizeof (buffer));
- while (fgets(buffer, BUFSIZ, confFile) != NULL) {
-
- /* ignore lines beginning with # */
- if (*buffer == '#')
- continue;
-
- /*
- * find the first white-space character after
- * the mechanism name
- */
- oidStr = buffer;
- for (oid = buffer; *oid && !isspace(*oid); oid++);
-
- /* Now find the first non-white-space character */
- if (*oid) {
- *oid = '\0';
- oid++;
- while (*oid && isspace(*oid))
- oid++;
- }
-
- /*
- * If that's all, then this is a corrupt entry. Skip it.
- */
- if (! *oid)
- continue;
-
- /* Find the end of the oid and make sure it is NULL-ended */
- for (endp = oid; *endp && !isspace(*endp); endp++)
- ;
-
- if (*endp) {
- *endp = '\0';
- }
-
- /*
- * check if an entry for this oid already exists
- * if it does, and the library is already loaded then
- * we can't modify it, so skip it
- */
- oidBuf.value = (void *)oid;
- oidBuf.length = strlen(oid);
- if (generic_gss_str_to_oid(&minor, &oidBuf, &mechOid)
- != GSS_S_COMPLETE) {
-#if 0
- (void) syslog(LOG_INFO, "invalid mechanism oid"
- " [%s] in configuration file", oid);
-#endif
- continue;
- }
-
- k5_mutex_lock(&g_mechListLock);
- aMech = searchMechList(mechOid);
- if (aMech && aMech->mech) {
- free(mechOid->elements);
- free(mechOid);
- k5_mutex_unlock(&g_mechListLock);
- continue;
- }
- k5_mutex_unlock(&g_mechListLock);
-
- /* Find the start of the shared lib name */
- for (sharedLib = endp+1; *sharedLib && isspace(*sharedLib);
- sharedLib++)
- ;
-
- /*
- * If that's all, then this is a corrupt entry. Skip it.
- */
- if (! *sharedLib) {
- free(mechOid->elements);
- free(mechOid);
- continue;
- }
-
- /*
- * Find the end of the shared lib name and make sure it is
- * NULL-terminated.
- */
- for (endp = sharedLib; *endp && !isspace(*endp); endp++)
- ;
-
- if (*endp) {
- *endp = '\0';
- }
-
- /* Find the start of the optional kernel module lib name */
- for (kernMod = endp+1; *kernMod && isspace(*kernMod);
- kernMod++)
- ;
-
- /*
- * If this item starts with a bracket "[", then
- * it is not a kernel module, but is a list of
- * options for the user module to parse later.
- */
- if (*kernMod && *kernMod != '[') {
- /*
- * Find the end of the shared lib name and make sure
- * it is NULL-terminated.
- */
- for (endp = kernMod; *endp && !isspace(*endp); endp++)
- ;
-
- if (*endp) {
- *endp = '\0';
- }
- } else
- kernMod = NULL;
-
- /* Find the start of the optional module options list */
- for (modOptions = endp+1; *modOptions && isspace(*modOptions);
- modOptions++);
-
- if (*modOptions == '[') {
- /* move past the opening bracket */
- for (modOptions = modOptions+1;
- *modOptions && isspace(*modOptions);
- modOptions++);
-
- /* Find the closing bracket */
- for (endp = modOptions;
- *endp && *endp != ']'; endp++);
-
- if (endp)
- *endp = '\0';
-
- } else {
- modOptions = NULL;
- }
-
- (void) strcpy(sharedPath, MECH_LIB_PREFIX);
- (void) strcat(sharedPath, sharedLib);
-
- /*
- * are we creating a new mechanism entry or
- * just modifying existing (non loaded) mechanism entry
- */
- if (aMech) {
- /*
- * delete any old values and set new
- * mechNameStr and mech_type are not modified
- */
- if (aMech->kmodName) {
- free(aMech->kmodName);
- aMech->kmodName = NULL;
- }
-
- if (aMech->optionStr) {
- free(aMech->optionStr);
- aMech->optionStr = NULL;
- }
-
- if ((tmpStr = strdup(sharedPath)) != NULL) {
- if (aMech->uLibName)
- free(aMech->uLibName);
- aMech->uLibName = tmpStr;
- }
-
- if (kernMod) /* this is an optional parameter */
- aMech->kmodName = strdup(kernMod);
-
- if (modOptions) /* optional module options */
- aMech->optionStr = strdup(modOptions);
-
- /* the oid is already set */
- free(mechOid->elements);
- free(mechOid);
- continue;
- }
-
- /* adding a new entry */
- aMech = malloc(sizeof (struct gss_mech_config));
- if (aMech == NULL) {
- free(mechOid->elements);
- free(mechOid);
- continue;
- }
- (void) memset(aMech, 0, sizeof (struct gss_mech_config));
- aMech->mech_type = mechOid;
- aMech->uLibName = strdup(sharedPath);
- aMech->mechNameStr = strdup(oidStr);
-
- /* check if any memory allocations failed - bad news */
- if (aMech->uLibName == NULL || aMech->mechNameStr == NULL) {
- if (aMech->uLibName)
- free(aMech->uLibName);
- if (aMech->mechNameStr)
- free(aMech->mechNameStr);
- free(mechOid->elements);
- free(mechOid);
- free(aMech);
- continue;
- }
- if (kernMod) /* this is an optional parameter */
- aMech->kmodName = strdup(kernMod);
-
- if (modOptions)
- aMech->optionStr = strdup(modOptions);
- /*
- * add the new entry to the end of the list - make sure
- * that only complete entries are added because other
- * threads might currently be searching the list.
- */
- tmp = g_mechListTail;
- g_mechListTail = aMech;
-
- if (tmp != NULL)
- tmp->next = aMech;
-
- if (g_mechList == NULL)
- g_mechList = aMech;
- } /* while */
- (void) fclose(confFile);
-} /* loadConfigFile */
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