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/**
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
#include <aws/common/process.h>
#include <aws/common/string.h>
#include <stdio.h>
#include <sys/types.h>
#define MAX_BUFFER_SIZE (2048)
int aws_run_command_result_init(struct aws_allocator *allocator, struct aws_run_command_result *result) {
if (!allocator || !result) {
return aws_raise_error(AWS_ERROR_INVALID_ARGUMENT);
}
AWS_ZERO_STRUCT(*result);
return AWS_OP_SUCCESS;
}
void aws_run_command_result_cleanup(struct aws_run_command_result *result) {
if (!result) {
return;
}
aws_string_destroy_secure(result->std_out);
aws_string_destroy_secure(result->std_err);
}
#if defined(AWS_OS_WINDOWS) && !defined(AWS_OS_WINDOWS_DESKTOP)
int aws_run_command(
struct aws_allocator *allocator,
struct aws_run_command_options *options,
struct aws_run_command_result *result) {
(void)allocator;
(void)options;
(void)result;
return aws_raise_error(AWS_ERROR_UNSUPPORTED_OPERATION);
}
#else
int aws_run_command(
struct aws_allocator *allocator,
struct aws_run_command_options *options,
struct aws_run_command_result *result) {
AWS_FATAL_ASSERT(allocator);
AWS_FATAL_ASSERT(options);
AWS_FATAL_ASSERT(result);
FILE *output_stream;
char output_buffer[MAX_BUFFER_SIZE];
struct aws_byte_buf result_buffer;
int ret = AWS_OP_ERR;
if (aws_byte_buf_init(&result_buffer, allocator, MAX_BUFFER_SIZE)) {
goto on_finish;
}
# if defined(AWS_OS_WINDOWS)
output_stream = _popen(options->command, "r");
# else
output_stream = popen(options->command, "r");
# endif
if (output_stream) {
while (!feof(output_stream)) {
if (fgets(output_buffer, MAX_BUFFER_SIZE, output_stream) != NULL) {
struct aws_byte_cursor cursor = aws_byte_cursor_from_c_str(output_buffer);
if (aws_byte_buf_append_dynamic(&result_buffer, &cursor)) {
goto on_finish;
}
}
}
# if defined(AWS_OS_WINDOWS)
result->ret_code = _pclose(output_stream);
# else
result->ret_code = pclose(output_stream);
# endif
}
struct aws_byte_cursor trim_cursor = aws_byte_cursor_from_buf(&result_buffer);
struct aws_byte_cursor trimmed_cursor = aws_byte_cursor_trim_pred(&trim_cursor, aws_char_is_space);
if (trimmed_cursor.len) {
result->std_out = aws_string_new_from_array(allocator, trimmed_cursor.ptr, trimmed_cursor.len);
if (!result->std_out) {
goto on_finish;
}
}
ret = AWS_OP_SUCCESS;
on_finish:
aws_byte_buf_clean_up_secure(&result_buffer);
return ret;
}
#endif /* !AWS_OS_WINDOWS */
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