+++ /dev/null
-/*
- * Copyright (c) 2003-2004,2006-2010,2013-2014 Apple Inc. All Rights Reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- *
- * readline.c
- */
-
-#include "readline.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-/* Inspects a file's existence and size. Returns a file handle or -1 on failure */
-int inspect_file_and_size(const char* name, off_t *out_off_end) {
-
- int fd, result;
- off_t off_end;
-
- do {
- fd = open(name, O_RDONLY, 0);
- } while (fd == -1 && errno == EINTR);
-
- if (fd == -1)
- {
- fprintf(stderr, "open %s: %s", name, strerror(errno));
- result = -1;
- goto loser;
- }
-
- off_end = lseek(fd, 0, SEEK_END);
- if (off_end == -1)
- {
- fprintf(stderr, "lseek %s, SEEK_END: %s", name, strerror(errno));
- result = -1;
- goto loser;
- }
-
- if (off_end > (unsigned)SIZE_MAX) {
- fprintf(stderr, "file %s too large %llu bytes", name, off_end);
- result = -1;
- goto loser;
- }
-
- if (out_off_end) {
- *out_off_end = off_end;
- }
-
- return fd;
-
-loser:
- return result;
-}
-
-
-/* Read a line from stdin into buffer as a null terminated string. If buffer is
- non NULL use at most buffer_size bytes and return a pointer to buffer. Otherwise
- return a newly malloced buffer.
- if EOF is read this function returns NULL. */
-char *
-readline(char *buffer, int buffer_size)
-{
- int ix = 0, bytes_malloced = 0;
-
- if (!buffer)
- {
- bytes_malloced = 64;
- buffer = (char *)malloc(bytes_malloced);
- buffer_size = bytes_malloced;
- }
-
- for (;;++ix)
- {
- int ch;
-
- if (ix == buffer_size - 1)
- {
- if (!bytes_malloced)
- break;
- bytes_malloced += bytes_malloced;
- buffer = (char *)realloc(buffer, bytes_malloced);
- buffer_size = bytes_malloced;
- }
-
- ch = getchar();
- if (ch == EOF)
- {
- if (bytes_malloced)
- free(buffer);
- return NULL;
- }
- if (ch == '\n')
- break;
- buffer[ix] = ch;
- }
-
- /* 0 terminate buffer. */
- buffer[ix] = '\0';
-
- return buffer;
-}
-
-/* Read the file name into buffer. On return buffer contains a newly
- malloced buffer or length buffer_size. Return 0 on success and -1 on failure. */
-int
-read_file(const char *name, uint8_t **outData, size_t *outLength)
-{
- int fd, result;
- char *buffer = NULL;
- off_t off_end;
- ssize_t bytes_read;
- size_t length;
-
- if( (fd = inspect_file_and_size(name, &off_end)) == -1 ){
- result = -1;
- goto loser;
- }
-
- length = (size_t)off_end;
- buffer = malloc(length);
- if (buffer == NULL) {
- result = -1;
- goto loser;
- }
-
- do {
- bytes_read = pread(fd, buffer, length, 0);
- } while (bytes_read == -1 && errno == EINTR);
-
- if (bytes_read == -1)
- {
- fprintf(stderr, "pread %s: %s", name, strerror(errno));
- result = -1;
- goto loser;
- }
- if (bytes_read != (ssize_t)length)
- {
- fprintf(stderr, "read %s: only read %zu of %zu bytes", name, bytes_read, length);
- result = -1;
- goto loser;
- }
-
- do {
- result = close(fd);
- } while (result == -1 && errno == EINTR);
-
- if (result == -1)
- {
- fprintf(stderr, "close %s: %s", name, strerror(errno));
- goto loser;
- }
-
- *outData = (uint8_t *)buffer;
- *outLength = length;
-
- return result;
-
-loser:
- if (buffer)
- free(buffer);
-
- return result;
-}
-
-CFDataRef copyFileContents(const char *path) {
- CFMutableDataRef data = NULL;
- int fd = open(path, O_RDONLY, 0666);
- if (fd == -1) {
- fprintf(stderr, "open %s: %s", path, strerror(errno));
- goto badFile;
- }
-
- off_t fsize = lseek(fd, 0, SEEK_END);
- if (fsize == (off_t)-1) {
- fprintf(stderr, "lseek %s, 0, SEEK_END: %s", path, strerror(errno));
- goto badFile;
- }
-
- if (fsize > (off_t)INT32_MAX) {
- fprintf(stderr, "file %s too large %llu bytes", path, fsize);
- goto badFile;
- }
-
- data = CFDataCreateMutable(kCFAllocatorDefault, (CFIndex)fsize);
- CFDataSetLength(data, (CFIndex)fsize);
- void *buf = CFDataGetMutableBytePtr(data);
- off_t total_read = 0;
- while (total_read < fsize) {
- ssize_t bytes_read;
-
- bytes_read = pread(fd, buf, (size_t)(fsize - total_read), total_read);
- if (bytes_read == -1) {
- fprintf(stderr, "read %s: %s", path, strerror(errno));
- goto badFile;
- }
- if (bytes_read == 0) {
- fprintf(stderr, "read %s: unexpected end of file", path);
- goto badFile;
- }
- total_read += bytes_read;
- }
-
- if (close(fd) == -1) {
- fprintf(stderr, "close %s: %s", path, strerror(errno));
- /* Failure to close the file isn't fatal. */
- }
-
- return data;
-badFile:
- if (fd != -1) {
- if (close(fd) == -1) {
- fprintf(stderr, "close %s: %s", path, strerror(errno));
- }
- }
- if (data)
- CFRelease(data);
- return NULL;
-}
-
-
-bool writeFileContents(const char *path, CFDataRef data) {
- int fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0666);
- if (fd == -1) {
- fprintf(stderr, "open %s: %s", path, strerror(errno));
- goto badFile;
- }
-
- const void *buf = CFDataGetBytePtr(data);
- off_t fsize = CFDataGetLength(data);
-
- off_t total_write = 0;
- while (total_write < fsize) {
- ssize_t bytes_write;
-
- bytes_write = pwrite(fd, buf, (size_t)(fsize - total_write), total_write);
- if (bytes_write == -1) {
- fprintf(stderr, "write %s: %s", path, strerror(errno));
- goto badFile;
- }
- if (bytes_write == 0) {
- fprintf(stderr, "write %s: unexpected end of file", path);
- goto badFile;
- }
- total_write += bytes_write;
- }
-
- if (close(fd) == -1) {
- fprintf(stderr, "close %s: %s", path, strerror(errno));
- /* Failure to close the file isn't fatal. */
- }
-
- return true;
-badFile:
- if (fd != -1) {
- if (close(fd) == -1) {
- fprintf(stderr, "close %s: %s", path, strerror(errno));
- }
- }
- if (data)
- CFRelease(data);
- return false;
-}
projects / apple / security.git / blobdiff