diff options
Diffstat (limited to 'src/providers/krb5/krb5_utils.c')
| -rw-r--r-- | src/providers/krb5/krb5_utils.c | 215 |
1 files changed, 78 insertions, 137 deletions
diff --git a/src/providers/krb5/krb5_utils.c b/src/providers/krb5/krb5_utils.c index a613695c1..825b807eb 100644 --- a/src/providers/krb5/krb5_utils.c +++ b/src/providers/krb5/krb5_utils.c @@ -946,6 +946,84 @@ errno_t sss_krb5_cc_destroy(const char *ccname, uid_t uid, gid_t gid) } +/* This function is called only as a way to validate that we have the + * right cache */ +errno_t sss_krb5_check_ccache_princ(uid_t uid, gid_t gid, + const char *ccname, const char *principal) +{ + struct sss_krb5_ccache *cc = NULL; + krb5_principal ccprinc = NULL; + krb5_principal kprinc = NULL; + krb5_error_code kerr; + const char *cc_type; + errno_t ret; + + ret = sss_open_ccache_as_user(ccname, uid, gid, &cc); + if (ret) { + return ret; + } + + cc_type = krb5_cc_get_type(cc->context, cc->ccache); + + DEBUG(SSSDBG_TRACE_INTERNAL, + ("Searching for [%s] in cache of type [%s]\n", principal, cc_type)); + + kerr = krb5_parse_name(cc->context, principal, &kprinc); + if (kerr != 0) { + KRB5_DEBUG(SSSDBG_OP_FAILURE, cc->context, kerr); + DEBUG(SSSDBG_CRIT_FAILURE, ("krb5_parse_name failed.\n")); + ret = ERR_INTERNAL; + goto done; + } + + kerr = krb5_cc_get_principal(cc->context, cc->ccache, &ccprinc); + if (kerr != 0) { + KRB5_DEBUG(SSSDBG_OP_FAILURE, cc->context, kerr); + DEBUG(SSSDBG_CRIT_FAILURE, ("krb5_cc_get_principal failed.\n")); + } + + if (ccprinc) { + if (krb5_principal_compare(cc->context, kprinc, ccprinc) == TRUE) { + /* found in the primary ccache */ + ret = EOK; + goto done; + } + } + +#ifdef HAVE_KRB5_CC_COLLECTION + + if (krb5_cc_support_switch(cc->context, cc_type)) { + + krb5_cc_close(cc->context, cc->ccache); + cc->ccache = NULL; + + kerr = krb5_cc_set_default_name(cc->context, ccname); + if (kerr != 0) { + KRB5_DEBUG(SSSDBG_MINOR_FAILURE, cc->context, kerr); + /* try to continue despite failure */ + } + + kerr = krb5_cc_cache_match(cc->context, kprinc, &cc->ccache); + if (kerr == 0) { + ret = EOK; + goto done; + } + KRB5_DEBUG(SSSDBG_TRACE_INTERNAL, cc->context, kerr); + } + +#endif /* HAVE_KRB5_CC_COLLECTION */ + + ret = ERR_NOT_FOUND; + +done: + krb5_free_principal(cc->context, ccprinc); + krb5_free_principal(cc->context, kprinc); + if (sss_close_ccache(cc) && ret == 0) { + ret = ERR_INTERNAL; + } + return ret; +} + /*======== ccache back end utilities ========*/ struct sss_krb5_cc_be * get_cc_be_ops(enum sss_krb5_cc_type type) @@ -1131,18 +1209,10 @@ cc_file_check_existing(const char *location, uid_t uid, return EOK; } -const char * -cc_file_cache_for_princ(TALLOC_CTX *mem_ctx, const char *location, - const char *princ) -{ - return talloc_strdup(mem_ctx, location); -} - struct sss_krb5_cc_be file_cc = { .type = SSS_KRB5_TYPE_FILE, .create = cc_file_create, .check_existing = cc_file_check_existing, - .ccache_for_princ = cc_file_cache_for_princ, }; #ifdef HAVE_KRB5_CC_COLLECTION @@ -1264,67 +1334,10 @@ done: return ret; } -const char * -cc_dir_cache_for_princ(TALLOC_CTX *mem_ctx, const char *location, - const char *princ) -{ - krb5_context context = NULL; - krb5_error_code krberr; - char *name = NULL; - const char *ccname; - krb5_principal client_principal = NULL; - - ccname = sss_krb5_residual_check_type(location, SSS_KRB5_TYPE_DIR); - if (!ccname) { - DEBUG(SSSDBG_CRIT_FAILURE, ("Cannot get ccname file from %s\n", - location)); - return NULL; - } - - /* ccname already points to a subsidiary cache */ - if (ccname[0] == ':' && ccname[1] && ccname[1] == '/') { - return talloc_strdup(mem_ctx, location); - } - - krberr = krb5_init_context(&context); - if (krberr) { - DEBUG(SSSDBG_OP_FAILURE, ("Failed to init kerberos context\n")); - return NULL; - } - - krberr = krb5_parse_name(context, princ, &client_principal); - if (krberr != 0) { - KRB5_DEBUG(SSSDBG_OP_FAILURE, context, krberr); - DEBUG(SSSDBG_CRIT_FAILURE, ("krb5_parse_name failed.\n")); - goto done; - } - - /* This function is called only as a way to validate that, - * we have the right cache - */ - name = sss_get_ccache_name_for_principal(mem_ctx, context, - client_principal, location); - if (name == NULL) { - DEBUG(SSSDBG_CRIT_FAILURE, ("Could not get full name of ccache\n")); - goto done; - } - - talloc_zfree(name); - /* everytime return location for dir_cache */ - name = talloc_strdup(mem_ctx, location); - -done: - krb5_free_principal(context, client_principal); - krb5_free_context(context); - - return name; -} - struct sss_krb5_cc_be dir_cc = { .type = SSS_KRB5_TYPE_DIR, .create = cc_dir_create, .check_existing = cc_dir_check_existing, - .ccache_for_princ = cc_dir_cache_for_princ, }; @@ -1380,82 +1393,10 @@ cc_keyring_check_existing(const char *location, uid_t uid, return EOK; } -const char * -cc_keyring_cache_for_princ(TALLOC_CTX *mem_ctx, const char *location, - const char *princ) -{ - krb5_context context = NULL; - krb5_error_code krberr; - char *name = NULL; - const char *residual; - size_t i; - size_t count; - krb5_principal client_principal = NULL; - - residual = sss_krb5_residual_check_type(location, SSS_KRB5_TYPE_KEYRING); - if (!residual) { - DEBUG(SSSDBG_CRIT_FAILURE, ("Cannot get residual from %s\n", - location)); - return NULL; - } - - /* residual already points to a subsidiary cache if it of the - * form "KEYRING:<type>:<UID>:krb5_cc_XXXXXXX" - * For simplicity, we'll count the colons, up to three. - */ - i = count = 0; - while (residual[i] && count < 3) { - if (residual[i] == ':') { - count ++; - } - i++; - } - - if (count >= 3) { - return talloc_strdup(mem_ctx, location); - } - - krberr = krb5_init_context(&context); - if (krberr) { - DEBUG(SSSDBG_OP_FAILURE, ("Failed to init kerberos context\n")); - return NULL; - } - - krberr = krb5_parse_name(context, princ, &client_principal); - if (krberr != 0) { - KRB5_DEBUG(SSSDBG_OP_FAILURE, context, krberr); - DEBUG(SSSDBG_CRIT_FAILURE, ("krb5_parse_name failed.\n")); - goto done; - } - - name = sss_get_ccache_name_for_principal(mem_ctx, context, - client_principal, location); - if (name == NULL) { - DEBUG(SSSDBG_CRIT_FAILURE, ("Could not get full name of ccache\n")); - goto done; - } - - talloc_zfree(name); - - /* Always return the master name here. - * We do the above only to ensure that the - * principal-specific name exists and can - * be found. - */ - name = talloc_strdup(mem_ctx, location); - -done: - krb5_free_principal(context, client_principal); - krb5_free_context(context); - - return name; -} - struct sss_krb5_cc_be keyring_cc = { .type = SSS_KRB5_TYPE_KEYRING, .create = cc_keyring_create, .check_existing = cc_keyring_check_existing, - .ccache_for_princ = cc_keyring_cache_for_princ, }; #endif /* HAVE_KRB5_CC_COLLECTION */ |