diff options
Diffstat (limited to 'source4/heimdal/lib/hx509/file.c')
-rw-r--r-- | source4/heimdal/lib/hx509/file.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/source4/heimdal/lib/hx509/file.c b/source4/heimdal/lib/hx509/file.c new file mode 100644 index 0000000000..39497fc3a9 --- /dev/null +++ b/source4/heimdal/lib/hx509/file.c @@ -0,0 +1,115 @@ +/* + * Copyright (c) 2005 - 2006 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 "hx_locl.h" +RCSID("$ID$"); + +int +_hx509_map_file(const char *fn, void **data, size_t *length, struct stat *rsb) +{ + struct stat sb; + size_t len; + ssize_t l; + int ret; + void *d; + int fd; + + *data = NULL; + *length = 0; + + fd = open(fn, O_RDONLY); + if (fd < 0) + return errno; + + if (fstat(fd, &sb) < 0) { + ret = errno; + close(fd); + return ret; + } + + len = sb.st_size; + + d = malloc(len); + if (d == NULL) { + close(fd); + return ENOMEM; + } + + l = read(fd, d, len); + close(fd); + if (l < 0 || l != len) { + free(d); + return EINVAL; + } + + if (rsb) + *rsb = sb; + *data = d; + *length = len; + return 0; +} + +void +_hx509_unmap_file(void *data, size_t len) +{ + free(data); +} + +int +_hx509_write_file(const char *fn, const void *data, size_t length) +{ + ssize_t sz; + const unsigned char *p = data; + int fd; + + fd = open(fn, O_WRONLY|O_TRUNC|O_CREAT, 0644); + if (fd < 0) + return errno; + + do { + sz = write(fd, p, length); + if (sz < 0) { + int saved_errno = errno; + close(fd); + return saved_errno; + } + if (sz == 0) + break; + length -= sz; + } while (length > 0); + + if (close(fd) == -1) + return errno; + + return 0; +} |