diff options
Diffstat (limited to 'third_party/heimdal/lib/base/error.c')
| -rw-r--r-- | third_party/heimdal/lib/base/error.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/base/error.c b/third_party/heimdal/lib/base/error.c new file mode 100644 index 0000000..6ba3bea --- /dev/null +++ b/third_party/heimdal/lib/base/error.c @@ -0,0 +1,178 @@ +/* + * Copyright (c) 2010 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Portions Copyright (c) 2010 Apple Inc. 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 "baselocl.h" + +struct heim_error { + int error_code; + heim_string_t msg; + struct heim_error *next; +}; + +static void HEIM_CALLCONV +error_dealloc(void *ptr) +{ + struct heim_error *p = ptr; + heim_release(p->msg); + heim_release(p->next); +} + +static int +error_cmp(void *a, void *b) +{ + struct heim_error *ap = a, *bp = b; + if (ap->error_code == bp->error_code) + return 0; + return heim_cmp(ap->msg, bp->msg); +} + +static uintptr_t +error_hash(void *ptr) +{ + struct heim_error *p = ptr; + return p->error_code; +} + +struct heim_type_data _heim_error_object = { + HEIM_TID_ERROR, + "error-object", + NULL, + error_dealloc, + NULL, + error_cmp, + error_hash, + NULL +}; + +heim_error_t +heim_error_create_enomem(void) +{ + /* This is an immediate object; see heim_number_create() */ + return (heim_error_t)heim_number_create(ENOMEM); +} + + +void +heim_error_create_opt(heim_error_t *error, int error_code, const char *fmt, ...) +{ + if (error) { + va_list ap; + va_start(ap, fmt); + *error = heim_error_createv(error_code, fmt, ap); + va_end(ap); + } +} + +heim_error_t +heim_error_create(int error_code, const char *fmt, ...) +{ + heim_error_t e; + va_list ap; + + va_start(ap, fmt); + e = heim_error_createv(error_code, fmt, ap); + va_end(ap); + + return e; +} + +heim_error_t +heim_error_createv(int error_code, const char *fmt, va_list ap) +{ + heim_error_t e; + char *str; + int len; + int save_errno = errno; + + str = malloc(1024); + errno = save_errno; + if (str == NULL) + return heim_error_create_enomem(); + len = vsnprintf(str, 1024, fmt, ap); + errno = save_errno; + if (len < 0) { + free(str); + return NULL; /* XXX We should have a special heim_error_t for this */ + } + + e = _heim_alloc_object(&_heim_error_object, sizeof(struct heim_error)); + if (e) { + e->msg = heim_string_create(str); + e->error_code = error_code; + } + free(str); + + errno = save_errno; + return e; +} + +heim_string_t +heim_error_copy_string(heim_error_t error) +{ + if (heim_get_tid(error) != HEIM_TID_ERROR) { + if (heim_get_tid(error) == heim_number_get_type_id()) + return __heim_string_constant(strerror(heim_number_get_int((heim_number_t)error))); + heim_abort("invalid heim_error_t"); + } + /* XXX concat all strings */ + return heim_retain(error->msg); +} + +int +heim_error_get_code(heim_error_t error) +{ + if (error == NULL) + return -1; + if (heim_get_tid(error) != HEIM_TID_ERROR) { + if (heim_get_tid(error) == heim_number_get_type_id()) + return heim_number_get_int((heim_number_t)error); + heim_abort("invalid heim_error_t"); + } + return error->error_code; +} + +heim_error_t +heim_error_append(heim_error_t top, heim_error_t append) +{ + if (heim_get_tid(top) != HEIM_TID_ERROR) { + if (heim_get_tid(top) == heim_number_get_type_id()) + return top; + heim_abort("invalid heim_error_t"); + } + if (top->next) + heim_release(top->next); + top->next = heim_retain(append); + return top; +} |