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Current Path: /usr/src/crypto/heimdal/lib/krb5

usr / src / crypto / heimdal / lib / krb5 /

📁 ..
📄 Makefile.am(7.68 KB)
📄 Makefile.in(224.98 KB)
📄 acache.c(26.87 KB)
📄 acl.c(7.58 KB)
📄 add_et_list.c(2.2 KB)
📄 addr_families.c(38.89 KB)
📄 aes-test.c(22.56 KB)
📄 aname_to_localname.c(2.83 KB)
📄 appdefault.c(4.41 KB)
📄 asn1_glue.c(2.37 KB)
📄 auth_context.c(14.97 KB)
📄 build_ap_req.c(2.77 KB)
📄 build_auth.c(5.5 KB)
📄 cache.c(41.88 KB)
📄 ccache_plugin.h(1.67 KB)
📄 changepw.c(20.59 KB)
📄 codec.c(6.1 KB)
📄 config_file.c(31.7 KB)
📄 constants.c(2.51 KB)
📄 context.c(37.71 KB)
📄 convert_creds.c(3.46 KB)
📄 copy_host_realm.c(2.66 KB)
📄 crc.c(2.19 KB)
📄 creds.c(8.75 KB)
📄 crypto-aes.c(4.62 KB)
📄 crypto-algs.c(3.04 KB)
📄 crypto-arcfour.c(8.78 KB)
📄 crypto-des-common.c(4.37 KB)
📄 crypto-des.c(8.8 KB)
📄 crypto-des3.c(5.36 KB)
📄 crypto-evp.c(5.45 KB)
📄 crypto-null.c(2.55 KB)
📄 crypto-pk.c(8.4 KB)
📄 crypto-rand.c(3.43 KB)
📄 crypto-stubs.c(3.1 KB)
📄 crypto.c(66.51 KB)
📄 crypto.h(6.5 KB)
📄 data.c(5.66 KB)
📄 deprecated.c(14.72 KB)
📄 derived-key-test.c(6.48 KB)
📄 digest.c(31.6 KB)
📄 doxygen.c(25.72 KB)
📄 eai_to_heim_errno.c(3.46 KB)
📄 error_string.c(8.93 KB)
📄 expand_hostname.c(5.59 KB)
📄 expand_path.c(12.35 KB)
📄 fcache.c(25.36 KB)
📄 free.c(2.01 KB)
📄 free_host_realm.c(2.1 KB)
📄 generate_seq_number.c(2.03 KB)
📄 generate_subkey.c(2.6 KB)
📄 get_addrs.c(8.2 KB)
📄 get_cred.c(38.45 KB)
📄 get_default_principal.c(4.47 KB)
📄 get_default_realm.c(2.74 KB)
📄 get_for_creds.c(13.48 KB)
📄 get_host_realm.c(7.06 KB)
📄 get_in_tkt.c(14.45 KB)
📄 get_port.c(2.04 KB)
📄 heim_err.et(1.7 KB)
📄 init_creds.c(12.11 KB)
📄 init_creds_pw.c(52.57 KB)
📄 k524_err.et(577 B)
📄 kcm.c(26.55 KB)
📄 kcm.h(2.83 KB)
📄 kerberos.8(4.14 KB)
📄 keyblock.c(5.31 KB)
📄 keytab.c(23.88 KB)
📄 keytab_any.c(6.48 KB)
📄 keytab_file.c(19.7 KB)
📄 keytab_keyfile.c(10.74 KB)
📄 keytab_memory.c(6.29 KB)
📄 krb5-private.h(12.91 KB)
📄 krb5-protos.h(113.43 KB)
📄 krb5-v4compat.h(4.44 KB)
📄 krb5.conf.5(18.31 KB)
📄 krb5.h(29.75 KB)
📄 krb5.moduli(1.11 KB)
📄 krb524_convert_creds_kdc.3(3.12 KB)
📄 krb5_425_conv_principal.3(7.02 KB)
📄 krb5_acl_match_file.3(3.49 KB)
📄 krb5_aname_to_localname.3(2.87 KB)
📄 krb5_appdefault.3(3.08 KB)
📄 krb5_auth_context.3(10.8 KB)
📄 krb5_c_make_checksum.3(6.92 KB)
📄 krb5_ccapi.h(7.52 KB)
📄 krb5_check_transited.3(3.28 KB)
📄 krb5_create_checksum.3(6.02 KB)
📄 krb5_creds.3(3.31 KB)
📄 krb5_digest.3(6.57 KB)
📄 krb5_eai_to_heim_errno.3(2.4 KB)
📄 krb5_encrypt.3(7 KB)
📄 krb5_err.et(12.86 KB)
📄 krb5_find_padata.3(2.53 KB)
📄 krb5_generate_random_block.3(2.1 KB)
📄 krb5_get_all_client_addrs.3(2.83 KB)
📄 krb5_get_credentials.3(5.03 KB)
📄 krb5_get_creds.3(5.28 KB)
📄 krb5_get_forwarded_creds.3(2.74 KB)
📄 krb5_get_in_cred.3(7.46 KB)
📄 krb5_get_init_creds.3(11.03 KB)
📄 krb5_get_krbhst.3(3.26 KB)
📄 krb5_getportbyname.3(2.32 KB)
📄 krb5_init_context.3(7.88 KB)
📄 krb5_is_thread_safe.3(2.24 KB)
📄 krb5_krbhst_init.3(5.67 KB)
📄 krb5_locl.h(8.47 KB)
📄 krb5_mk_req.3(5.18 KB)
📄 krb5_mk_safe.3(2.78 KB)
📄 krb5_openlog.3(7.96 KB)
📄 krb5_parse_name.3(2.57 KB)
📄 krb5_principal.3(11.85 KB)
📄 krb5_rcache.3(4.21 KB)
📄 krb5_rd_error.3(3.33 KB)
📄 krb5_rd_safe.3(2.77 KB)
📄 krb5_set_default_realm.3(4.29 KB)
📄 krb5_set_password.3(4.11 KB)
📄 krb5_string_to_key.3(4.39 KB)
📄 krb5_timeofday.3(3.33 KB)
📄 krb5_verify_init_creds.3(3.51 KB)
📄 krb5_verify_user.3(6.71 KB)
📄 krb_err.et(2.55 KB)
📄 krbhst-test.c(3.02 KB)
📄 krbhst.c(26.94 KB)
📄 kuserok.c(8.14 KB)
📄 locate_plugin.h(2.36 KB)
📄 log.c(11.94 KB)
📄 mcache.c(11.54 KB)
📄 misc.c(3.9 KB)
📄 mit_glue.c(11.14 KB)
📄 mk_error.c(3.23 KB)
📄 mk_priv.c(4.54 KB)
📄 mk_rep.c(3.99 KB)
📄 mk_req.c(3.58 KB)
📄 mk_req_ext.c(4.78 KB)
📄 mk_safe.c(4.36 KB)
📄 n-fold-test.c(4.14 KB)
📄 n-fold.c(3.8 KB)
📄 net_read.c(1.86 KB)
📄 net_write.c(3.05 KB)
📄 pac.c(28.37 KB)
📄 padata.c(2.35 KB)
📄 parse-name-test.c(5.81 KB)
📄 pcache.c(2.33 KB)
📄 pkinit.c(63.8 KB)
📄 plugin.c(13.71 KB)
📄 principal.c(28.4 KB)
📄 prog_setup.c(2.34 KB)
📄 prompter_posix.c(2.45 KB)
📄 rd_cred.c(9.44 KB)
📄 rd_error.c(3.83 KB)
📄 rd_priv.c(5.38 KB)
📄 rd_rep.c(3.72 KB)
📄 rd_req.c(25.6 KB)
📄 rd_safe.c(6.34 KB)
📄 read_message.c(3.22 KB)
📄 recvauth.c(6.16 KB)
📄 replay.c(8.24 KB)
📄 salt-aes.c(3.34 KB)
📄 salt-arcfour.c(3.24 KB)
📄 salt-des.c(6.68 KB)
📄 salt-des3.c(4.36 KB)
📄 salt.c(9 KB)
📄 scache.c(32.86 KB)
📄 send_to_kdc.c(16.06 KB)
📄 send_to_kdc_plugin.h(2.22 KB)
📄 sendauth.c(6.12 KB)
📄 set_default_realm.c(3.01 KB)
📄 sock_principal.c(2.52 KB)
📄 store-int.c(2.14 KB)
📄 store-int.h(2.07 KB)
📄 store-test.c(3.63 KB)
📄 store.c(35.77 KB)
📄 store_emem.c(5.06 KB)
📄 store_fd.c(3.4 KB)
📄 store_mem.c(5.42 KB)
📄 string-to-key-test.c(5.75 KB)
📄 test_acl.c(4.56 KB)
📄 test_addr.c(7.27 KB)
📄 test_alname.c(4.28 KB)
📄 test_cc.c(19.39 KB)
📄 test_config.c(7.92 KB)
📄 test_crypto.c(5.68 KB)
📄 test_crypto_wrapping.c(4.48 KB)
📄 test_forward.c(3.64 KB)
📄 test_get_addrs.c(3.21 KB)
📄 test_hostname.c(3.82 KB)
📄 test_keytab.c(7.42 KB)
📄 test_kuserok.c(2.9 KB)
📄 test_mem.c(2.21 KB)
📄 test_pac.c(15.1 KB)
📄 test_pkinit_dh2key.c(6.9 KB)
📄 test_plugin.c(3.4 KB)
📄 test_prf.c(3.21 KB)
📄 test_princ.c(10.44 KB)
📄 test_renew.c(3.22 KB)
📄 test_store.c(7.96 KB)
📄 test_time.c(2.57 KB)
📄 ticket.c(21.91 KB)
📄 time.c(3.84 KB)
📄 transited.c(11.11 KB)
📄 verify_init.c(6.47 KB)
📄 verify_krb5_conf.8(3.41 KB)
📄 verify_krb5_conf.c(20.63 KB)
📄 verify_user.c(7 KB)
📄 version-script.map(18.82 KB)
📄 version.c(1.71 KB)
📄 warn.c(8.98 KB)
📄 write_message.c(2.87 KB)

Editing: plugin.c

/*
 * Copyright (c) 2006 - 2007 Kungliga Tekniska Högskolan
 * (Royal Institute of Technology, Stockholm, Sweden).
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "krb5_locl.h"

#ifdef HAVE_DLFCN_H
#include <dlfcn.h>
#endif
#include <dirent.h>

struct krb5_plugin {
    void *symbol;
    struct krb5_plugin *next;
};

struct plugin {
    enum { DSO, SYMBOL } type;
    union {
	struct {
	    char *path;
	    void *dsohandle;
	} dso;
	struct {
	    enum krb5_plugin_type type;
	    char *name;
	    char *symbol;
	} symbol;
    } u;
    struct plugin *next;
};

static HEIMDAL_MUTEX plugin_mutex = HEIMDAL_MUTEX_INITIALIZER;
static struct plugin *registered = NULL;
static int plugins_needs_scan = 1;

static const char *sysplugin_dirs[] =  {
    LIBDIR "/plugin/krb5",
#ifdef __APPLE__
    "/System/Library/KerberosPlugins/KerberosFrameworkPlugins",
#endif
    NULL
};

/*
 *
 */

void *
_krb5_plugin_get_symbol(struct krb5_plugin *p)
{
    return p->symbol;
}

struct krb5_plugin *
_krb5_plugin_get_next(struct krb5_plugin *p)
{
    return p->next;
}

/*
 *
 */

#ifdef HAVE_DLOPEN

static krb5_error_code
loadlib(krb5_context context, char *path)
{
    struct plugin *e;

e = calloc(1, sizeof(*e));
    if (e == NULL) {
	krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
	free(path);
	return ENOMEM;
    }

#ifndef RTLD_LAZY
#define RTLD_LAZY 0
#endif
#ifndef RTLD_LOCAL
#define RTLD_LOCAL 0
#endif
    e->type = DSO;
    /* ignore error from dlopen, and just keep it as negative cache entry */
    e->u.dso.dsohandle = dlopen(path, RTLD_LOCAL|RTLD_LAZY);
    e->u.dso.path = path;

e->next = registered;
    registered = e;

return 0;
}
#endif /* HAVE_DLOPEN */

/**
 * Register a plugin symbol name of specific type.
 * @param context a Keberos context
 * @param type type of plugin symbol
 * @param name name of plugin symbol
 * @param symbol a pointer to the named symbol
 * @return In case of error a non zero error com_err error is returned
 * and the Kerberos error string is set.
 *
 * @ingroup krb5_support
 */

KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_plugin_register(krb5_context context,
		     enum krb5_plugin_type type,
		     const char *name,
		     void *symbol)
{
    struct plugin *e;

HEIMDAL_MUTEX_lock(&plugin_mutex);

/* check for duplicates */
    for (e = registered; e != NULL; e = e->next) {
	if (e->type == SYMBOL &&
	    strcmp(e->u.symbol.name, name) == 0 &&
	    e->u.symbol.type == type && e->u.symbol.symbol == symbol) {
	    HEIMDAL_MUTEX_unlock(&plugin_mutex);
	    return 0;
	}
    }

e = calloc(1, sizeof(*e));
    if (e == NULL) {
	HEIMDAL_MUTEX_unlock(&plugin_mutex);
	krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
	return ENOMEM;
    }
    e->type = SYMBOL;
    e->u.symbol.type = type;
    e->u.symbol.name = strdup(name);
    if (e->u.symbol.name == NULL) {
	HEIMDAL_MUTEX_unlock(&plugin_mutex);
	free(e);
	krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
	return ENOMEM;
    }
    e->u.symbol.symbol = symbol;

e->next = registered;
    registered = e;
    HEIMDAL_MUTEX_unlock(&plugin_mutex);

return 0;
}

static int
is_valid_plugin_filename(const char * n)
{
    if (n[0] == '.' && (n[1] == '\0' || (n[1] == '.' && n[2] == '\0')))
        return 0;

#ifdef _WIN32
    /* On Windows, we only attempt to load .dll files as plug-ins. */
    {
        const char * ext;

ext = strrchr(n, '.');
        if (ext == NULL)
            return 0;

return !stricmp(ext, ".dll");
    }
#else
    return 1;
#endif
}

static void
trim_trailing_slash(char * path)
{
    size_t l;

l = strlen(path);
    while (l > 0 && (path[l - 1] == '/'
#ifdef BACKSLASH_PATH_DELIM
                     || path[l - 1] == '\\'
#endif
               )) {
        path[--l] = '\0';
    }
}

static krb5_error_code
load_plugins(krb5_context context)
{
    struct plugin *e;
    krb5_error_code ret;
    char **dirs = NULL, **di;
    struct dirent *entry;
    char *path;
    DIR *d = NULL;

if (!plugins_needs_scan)
	return 0;
    plugins_needs_scan = 0;

#ifdef HAVE_DLOPEN

dirs = krb5_config_get_strings(context, NULL, "libdefaults",
				   "plugin_dir", NULL);
    if (dirs == NULL)
	dirs = rk_UNCONST(sysplugin_dirs);

for (di = dirs; *di != NULL; di++) {
        char * dir = *di;

#ifdef KRB5_USE_PATH_TOKENS
        if (_krb5_expand_path_tokens(context, *di, &dir))
            goto next_dir;
#endif

trim_trailing_slash(dir);

d = opendir(dir);

if (d == NULL)
	    goto next_dir;

rk_cloexec_dir(d);

while ((entry = readdir(d)) != NULL) {
	    char *n = entry->d_name;

/* skip . and .. */
            if (!is_valid_plugin_filename(n))
		continue;

path = NULL;
	    ret = 0;
#ifdef __APPLE__
	    { /* support loading bundles on MacOS */
		size_t len = strlen(n);
		if (len > 7 && strcmp(&n[len - 7],  ".bundle") == 0)
		    ret = asprintf(&path, "%s/%s/Contents/MacOS/%.*s", dir, n, (int)(len - 7), n);
	    }
#endif
	    if (ret < 0 || path == NULL)
		ret = asprintf(&path, "%s/%s", dir, n);

if (ret < 0 || path == NULL) {
		ret = ENOMEM;
		krb5_set_error_message(context, ret, "malloc: out of memory");
		return ret;
	    }

/* check if already tried */
	    for (e = registered; e != NULL; e = e->next)
		if (e->type == DSO && strcmp(e->u.dso.path, path) == 0)
		    break;
	    if (e) {
		free(path);
	    } else {
		loadlib(context, path); /* store or frees path */
	    }
	}
	closedir(d);

next_dir:
        if (dir != *di)
            free(dir);
    }
    if (dirs != rk_UNCONST(sysplugin_dirs))
	krb5_config_free_strings(dirs);
#endif /* HAVE_DLOPEN */
    return 0;
}

static krb5_error_code
add_symbol(krb5_context context, struct krb5_plugin **list, void *symbol)
{
    struct krb5_plugin *e;

e = calloc(1, sizeof(*e));
    if (e == NULL) {
	krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
	return ENOMEM;
    }
    e->symbol = symbol;
    e->next = *list;
    *list = e;
    return 0;
}

krb5_error_code
_krb5_plugin_find(krb5_context context,
		  enum krb5_plugin_type type,
		  const char *name,
		  struct krb5_plugin **list)
{
    struct plugin *e;
    krb5_error_code ret;

*list = NULL;

HEIMDAL_MUTEX_lock(&plugin_mutex);

load_plugins(context);

for (ret = 0, e = registered; e != NULL; e = e->next) {
	switch(e->type) {
	case DSO: {
	    void *sym;
	    if (e->u.dso.dsohandle == NULL)
		continue;
	    sym = dlsym(e->u.dso.dsohandle, name);
	    if (sym)
		ret = add_symbol(context, list, sym);
	    break;
	}
	case SYMBOL:
	    if (strcmp(e->u.symbol.name, name) == 0 && e->u.symbol.type == type)
		ret = add_symbol(context, list, e->u.symbol.symbol);
	    break;
	}
	if (ret) {
	    _krb5_plugin_free(*list);
	    *list = NULL;
	}
    }

HEIMDAL_MUTEX_unlock(&plugin_mutex);
    if (ret)
	return ret;

if (*list == NULL) {
	krb5_set_error_message(context, ENOENT, "Did not find a plugin for %s", name);
	return ENOENT;
    }

return 0;
}

void
_krb5_plugin_free(struct krb5_plugin *list)
{
    struct krb5_plugin *next;
    while (list) {
	next = list->next;
	free(list);
	list = next;
    }
}
/*
 * module - dict of {
 *      ModuleName = [
 *          plugin = object{
 *              array = { ptr, ctx }
 *          }
 *      ]
 * }
 */

static heim_dict_t modules;

struct plugin2 {
    heim_string_t path;
    void *dsohandle;
    heim_dict_t names;
};

static void
plug_dealloc(void *ptr)
{
    struct plugin2 *p = ptr;
    heim_release(p->path);
    heim_release(p->names);
    if (p->dsohandle)
	dlclose(p->dsohandle);
}

void
_krb5_load_plugins(krb5_context context, const char *name, const char **paths)
{
#ifdef HAVE_DLOPEN
    heim_string_t s = heim_string_create(name);
    heim_dict_t module;
    struct dirent *entry;
    krb5_error_code ret;
    const char **di;
    DIR *d;

HEIMDAL_MUTEX_lock(&plugin_mutex);

if (modules == NULL) {
	modules = heim_dict_create(11);
	if (modules == NULL) {
	    HEIMDAL_MUTEX_unlock(&plugin_mutex);
	    return;
	}
    }

module = heim_dict_copy_value(modules, s);
    if (module == NULL) {
	module = heim_dict_create(11);
	if (module == NULL) {
	    HEIMDAL_MUTEX_unlock(&plugin_mutex);
	    heim_release(s);
	    return;
	}
	heim_dict_add_value(modules, s, module);
    }
    heim_release(s);

for (di = paths; *di != NULL; di++) {
	d = opendir(*di);
	if (d == NULL)
	    continue;
	rk_cloexec_dir(d);

while ((entry = readdir(d)) != NULL) {
	    char *n = entry->d_name;
	    char *path = NULL;
	    heim_string_t spath;
	    struct plugin2 *p;

/* skip . and .. */
	    if (n[0] == '.' && (n[1] == '\0' || (n[1] == '.' && n[2] == '\0')))
		continue;

ret = 0;
#ifdef __APPLE__
	    { /* support loading bundles on MacOS */
		size_t len = strlen(n);
		if (len > 7 && strcmp(&n[len - 7],  ".bundle") == 0)
		    ret = asprintf(&path, "%s/%s/Contents/MacOS/%.*s", *di, n, (int)(len - 7), n);
	    }
#endif
	    if (ret < 0 || path == NULL)
		ret = asprintf(&path, "%s/%s", *di, n);

if (ret < 0 || path == NULL)
		continue;

spath = heim_string_create(n);
	    if (spath == NULL) {
		free(path);
		continue;
	    }

/* check if already cached */
	    p = heim_dict_copy_value(module, spath);
	    if (p == NULL) {
		p = heim_alloc(sizeof(*p), "krb5-plugin", plug_dealloc);
		if (p)
		    p->dsohandle = dlopen(path, RTLD_LOCAL|RTLD_LAZY);

if (p->dsohandle) {
		    p->path = heim_retain(spath);
		    p->names = heim_dict_create(11);
		    heim_dict_add_value(module, spath, p);
		}
	    }
	    heim_release(spath);
	    heim_release(p);
	    free(path);
	}
	closedir(d);
    }
    heim_release(module);
    HEIMDAL_MUTEX_unlock(&plugin_mutex);
#endif /* HAVE_DLOPEN */
}

void
_krb5_unload_plugins(krb5_context context, const char *name)
{
    HEIMDAL_MUTEX_lock(&plugin_mutex);
    heim_release(modules);
    modules = NULL;
    HEIMDAL_MUTEX_unlock(&plugin_mutex);
}

/*
 *
 */

struct common_plugin_method {
    int			version;
    krb5_error_code	(*init)(krb5_context, void **);
    void		(*fini)(void *);
};

struct plug {
    void *dataptr;
    void *ctx;
};

static void
plug_free(void *ptr)
{
    struct plug *pl = ptr;
    if (pl->dataptr) {
	struct common_plugin_method *cpm = pl->dataptr;
	cpm->fini(pl->ctx);
    }
}

struct iter_ctx {
    krb5_context context;
    heim_string_t n;
    const char *name;
    int min_version;
    heim_array_t result;
    krb5_error_code (*func)(krb5_context, const void *, void *, void *);
    void *userctx;
    krb5_error_code ret;
};

static void
search_modules(void *ctx, heim_object_t key, heim_object_t value)
{
    struct iter_ctx *s = ctx;
    struct plugin2 *p = value;
    struct plug *pl = heim_dict_copy_value(p->names, s->n);
    struct common_plugin_method *cpm;

if (pl == NULL) {
	if (p->dsohandle == NULL)
	    return;

pl = heim_alloc(sizeof(*pl), "struct-plug", plug_free);

cpm = pl->dataptr = dlsym(p->dsohandle, s->name);
	if (cpm) {
	    int ret;

ret = cpm->init(s->context, &pl->ctx);
	    if (ret)
		cpm = pl->dataptr = NULL;
	}
	heim_dict_add_value(p->names, s->n, pl);
    } else {
	cpm = pl->dataptr;
    }

if (cpm && cpm->version >= s->min_version)
	heim_array_append_value(s->result, pl);

heim_release(pl);
}

static void
eval_results(heim_object_t value, void *ctx)
{
    struct plug *pl = value;
    struct iter_ctx *s = ctx;

if (s->ret != KRB5_PLUGIN_NO_HANDLE)
	return;

s->ret = s->func(s->context, pl->dataptr, pl->ctx, s->userctx);
}

krb5_error_code
_krb5_plugin_run_f(krb5_context context,
		   const char *module,
		   const char *name,
		   int min_version,
		   int flags,
		   void *userctx,
		   krb5_error_code (*func)(krb5_context, const void *, void *, void *))
{
    heim_string_t m = heim_string_create(module);
    heim_dict_t dict;
    struct iter_ctx s;

HEIMDAL_MUTEX_lock(&plugin_mutex);

dict = heim_dict_copy_value(modules, m);
    heim_release(m);
    if (dict == NULL) {
	HEIMDAL_MUTEX_unlock(&plugin_mutex);
	return KRB5_PLUGIN_NO_HANDLE;
    }

s.context = context;
    s.name = name;
    s.n = heim_string_create(name);
    s.min_version = min_version;
    s.result = heim_array_create();
    s.func = func;
    s.userctx = userctx;

heim_dict_iterate_f(dict, search_modules, &s);

heim_release(dict);

HEIMDAL_MUTEX_unlock(&plugin_mutex);

s.ret = KRB5_PLUGIN_NO_HANDLE;

heim_array_iterate_f(s.result, eval_results, &s);

heim_release(s.result);
    heim_release(s.n);

return s.ret;
}

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