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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: acl.c

/*
 * Copyright (c) 2000 - 2002, 2004 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"
#include <fnmatch.h>

struct acl_field {
    enum { acl_string, acl_fnmatch, acl_retval } type;
    union {
	const char *cstr;
	char **retv;
    } u;
    struct acl_field *next, **last;
};

static void
free_retv(struct acl_field *acl)
{
    while(acl != NULL) {
	if (acl->type == acl_retval) {
	    if (*acl->u.retv)
		free(*acl->u.retv);
	    *acl->u.retv = NULL;
	}
	acl = acl->next;
    }
}

static void
acl_free_list(struct acl_field *acl, int retv)
{
    struct acl_field *next;
    if (retv)
	free_retv(acl);
    while(acl != NULL) {
	next = acl->next;
	free(acl);
	acl = next;
    }
}

static krb5_error_code
acl_parse_format(krb5_context context,
		 struct acl_field **acl_ret,
		 const char *format,
		 va_list ap)
{
    const char *p;
    struct acl_field *acl = NULL, *tmp;

for(p = format; *p != '\0'; p++) {
	tmp = malloc(sizeof(*tmp));
	if(tmp == NULL) {
	    krb5_set_error_message(context, ENOMEM,
				   N_("malloc: out of memory", ""));
	    acl_free_list(acl, 0);
	    return ENOMEM;
	}
	if(*p == 's') {
	    tmp->type = acl_string;
	    tmp->u.cstr = va_arg(ap, const char*);
	} else if(*p == 'f') {
	    tmp->type = acl_fnmatch;
	    tmp->u.cstr = va_arg(ap, const char*);
	} else if(*p == 'r') {
	    tmp->type = acl_retval;
	    tmp->u.retv = va_arg(ap, char **);
	    *tmp->u.retv = NULL;
	} else {
	    krb5_set_error_message(context, EINVAL,
				   N_("Unknown format specifier %c while "
				     "parsing ACL", "specifier"), *p);
	    acl_free_list(acl, 0);
	    free(tmp);
	    return EINVAL;
	}
	tmp->next = NULL;
	if(acl == NULL)
	    acl = tmp;
	else
	    *acl->last = tmp;
	acl->last = &tmp->next;
    }
    *acl_ret = acl;
    return 0;
}

static krb5_boolean
acl_match_field(krb5_context context,
		const char *string,
		struct acl_field *field)
{
    if(field->type == acl_string) {
	return !strcmp(field->u.cstr, string);
    } else if(field->type == acl_fnmatch) {
	return !fnmatch(field->u.cstr, string, 0);
    } else if(field->type == acl_retval) {
	*field->u.retv = strdup(string);
	return TRUE;
    }
    return FALSE;
}

static krb5_boolean
acl_match_acl(krb5_context context,
	      struct acl_field *acl,
	      const char *string)
{
    char buf[256];
    while(strsep_copy(&string, " \t", buf, sizeof(buf)) != -1) {
	if(buf[0] == '\0')
	    continue; /* skip ws */
	if (acl == NULL)
	    return FALSE;
	if(!acl_match_field(context, buf, acl)) {
	    return FALSE;
	}
	acl = acl->next;
    }
    if (acl)
	return FALSE;
    return TRUE;
}

/**
 * krb5_acl_match_string matches ACL format against a string.
 *
 * The ACL format has three format specifiers: s, f, and r.  Each
 * specifier will retrieve one argument from the variable arguments
 * for either matching or storing data.  The input string is split up
 * using " " (space) and "\t" (tab) as a delimiter; multiple and "\t"
 * in a row are considered to be the same.
 *
 * List of format specifiers:
 * - s Matches a string using strcmp(3) (case sensitive).
 * - f Matches the string with fnmatch(3). Theflags
 *     argument (the last argument) passed to the fnmatch function is 0.
 * - r Returns a copy of the string in the char ** passed in; the copy
 *     must be freed with free(3). There is no need to free(3) the
 *     string on error: the function will clean up and set the pointer
 *     to NULL.
 *
 * @param context Kerberos 5 context
 * @param string string to match with
 * @param format format to match
 * @param ... parameter to format string
 *
 * @return Return an error code or 0.
 *
 *
 * @code
 * char *s;
 *
 * ret = krb5_acl_match_string(context, "foo", "s", "foo");
 * if (ret)
 *     krb5_errx(context, 1, "acl didn't match");
 * ret = krb5_acl_match_string(context, "foo foo baz/kaka",
 *     "ss", "foo", &s, "foo/\\*");
 * if (ret) {
 *     // no need to free(s) on error
 *     assert(s == NULL);
 *     krb5_errx(context, 1, "acl didn't match");
 * }
 * free(s);
 * @endcode
 *
 * @sa krb5_acl_match_file
 * @ingroup krb5_support
 */

KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_acl_match_string(krb5_context context,
		      const char *string,
		      const char *format,
		      ...)
{
    krb5_error_code ret;
    krb5_boolean found;
    struct acl_field *acl;

va_list ap;
    va_start(ap, format);
    ret = acl_parse_format(context, &acl, format, ap);
    va_end(ap);
    if(ret)
	return ret;

found = acl_match_acl(context, acl, string);
    acl_free_list(acl, !found);
    if (found) {
	return 0;
    } else {
	krb5_set_error_message(context, EACCES, N_("ACL did not match", ""));
	return EACCES;
    }
}

/**
 * krb5_acl_match_file matches ACL format against each line in a file
 * using krb5_acl_match_string(). Lines starting with # are treated
 * like comments and ignored.
 *
 * @param context Kerberos 5 context.
 * @param file file with acl listed in the file.
 * @param format format to match.
 * @param ... parameter to format string.
 *
 * @return Return an error code or 0.
 *
 * @sa krb5_acl_match_string
 * @ingroup krb5_support
 */

KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_acl_match_file(krb5_context context,
		    const char *file,
		    const char *format,
		    ...)
{
    krb5_error_code ret;
    struct acl_field *acl;
    char buf[256];
    va_list ap;
    FILE *f;
    krb5_boolean found;

f = fopen(file, "r");
    if(f == NULL) {
	int save_errno = errno;
	rk_strerror_r(save_errno, buf, sizeof(buf));
	krb5_set_error_message(context, save_errno,
			       N_("open(%s): %s", "file, errno"),
			       file, buf);
	return save_errno;
    }
    rk_cloexec_file(f);

va_start(ap, format);
    ret = acl_parse_format(context, &acl, format, ap);
    va_end(ap);
    if(ret) {
	fclose(f);
	return ret;
    }

found = FALSE;
    while(fgets(buf, sizeof(buf), f)) {
	if(buf[0] == '#')
	    continue;
	if(acl_match_acl(context, acl, buf)) {
	    found = TRUE;
	    break;
	}
	free_retv(acl);
    }

fclose(f);
    acl_free_list(acl, !found);
    if (found) {
	return 0;
    } else {
	krb5_set_error_message(context, EACCES, N_("ACL did not match", ""));
	return EACCES;
    }
}

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Editing: acl.c

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