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/* Copyright (c) 2017, Google Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
#include <openssl/bytestring.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <algorithm>
#include <vector>
#include "internal.h"
bool ReadAll(std::vector<uint8_t> *out, FILE *file) {
out->clear();
constexpr size_t kMaxSize = 1024 * 1024;
size_t len = 0;
out->resize(128);
for (;;) {
len += fread(out->data() + len, 1, out->size() - len, file);
if (feof(file)) {
out->resize(len);
return true;
}
if (ferror(file)) {
return false;
}
if (len == out->size()) {
if (out->size() == kMaxSize) {
fprintf(stderr, "Input too large.\n");
return false;
}
size_t cap = std::min(out->size() * 2, kMaxSize);
out->resize(cap);
}
}
}
bool WriteToFile(const std::string &path, bssl::Span<const uint8_t> in) {
ScopedFILE file(fopen(path.c_str(), "wb"));
if (!file) {
fprintf(stderr, "Failed to open '%s': %s\n", path.c_str(), strerror(errno));
return false;
}
if (fwrite(in.data(), in.size(), 1, file.get()) != 1) {
fprintf(stderr, "Failed to write to '%s': %s\n", path.c_str(),
strerror(errno));
return false;
}
return true;
}
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