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/*
* SPDX-License-Identifier: ISC
*
* Copyright (c) 2020 Robert Manner <robert.manner@oneidentity.com>
*
* Permission to use, copy, modify, and 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.
*/
/*
* This is an open source non-commercial project. Dear PVS-Studio, please check it.
* PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
*/
#include "iohelpers.h"
#include <sudo_fatal.h>
int
rmdir_recursive(const char *path)
{
char *cmd = NULL;
int success = false;
if (asprintf(&cmd, "rm -rf \"%s\"", path) < 0)
return false;
if (system(cmd) == 0)
success = true;
free(cmd);
return success;
}
int
fwriteall(const char *file_path, const char *string)
{
int success = false;
FILE *file = fopen(file_path, "w+");
if (file == NULL)
goto cleanup;
size_t size = strlen(string);
if (fwrite(string, 1, size, file) < size) {
goto cleanup;
}
success = true;
cleanup:
if (file)
fclose(file);
return success;
}
int
freadall(const char *file_path, char *output, size_t max_len)
{
int rc = false;
FILE *file = fopen(file_path, "rb");
if (file == NULL) {
sudo_warn_nodebug("failed to open file '%s'", file_path);
goto cleanup;
}
size_t len = fread(output, 1, max_len - 1, file);
output[len] = '\0';
if (ferror(file) != 0) {
sudo_warn_nodebug("failed to read file '%s'", file_path);
goto cleanup;
}
if (!feof(file)) {
sudo_warn_nodebug("file '%s' was bigger than allocated buffer %zu",
file_path, max_len);
goto cleanup;
}
rc = true;
cleanup:
if (file)
fclose(file);
return rc;
}
int
vsnprintf_append(char * restrict output, size_t max_output_len, const char * restrict fmt, va_list args)
{
va_list args2;
va_copy(args2, args);
size_t output_len = strlen(output);
int rc = vsnprintf(output + output_len, max_output_len - output_len, fmt, args2);
va_end(args2);
return rc;
}
int
snprintf_append(char * restrict output, size_t max_output_len, const char * restrict fmt, ...)
{
va_list args;
va_start(args, fmt);
int rc = vsnprintf_append(output, max_output_len, fmt, args);
va_end(args);
return rc;
}
int
str_array_count(char **str_array)
{
int result = 0;
for (; str_array[result] != NULL; ++result) {}
return result;
}
void
str_array_snprint(char *out_str, size_t max_len, char **str_array, int array_len)
{
if (array_len < 0)
array_len = str_array_count(str_array);
for (int pos = 0; pos < array_len; ++pos) {
snprintf_append(out_str, max_len, "%s%s", pos > 0 ? ", " : "", str_array[pos]);
}
}
char *
str_replaced(const char *source, size_t dest_len, const char *old, const char *new)
{
char *result = malloc(dest_len);
char *dest = result;
char *pos = NULL;
size_t old_len = strlen(old);
if (result == NULL)
return NULL;
while ((pos = strstr(source, old)) != NULL) {
size_t len = (size_t)snprintf(dest, dest_len,
"%.*s%s", (int)(pos - source), source, new);
if (len >= dest_len)
goto fail;
dest_len -= len;
dest += len;
source = pos + old_len;
}
if (strlcpy(dest, source, dest_len) >= dest_len)
goto fail;
return result;
fail:
free(result);
return strdup("str_replace_all failed, string too long");
}
void
str_replace_in_place(char *string, size_t max_length, const char *old, const char *new)
{
char *replaced = str_replaced(string, max_length, old, new);
if (replaced != NULL) {
strlcpy(string, replaced, max_length);
free(replaced);
}
}
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