static inline int parse_edk()

in source/header.c [160:187]

• 21 lines of code
• 10 McCabe index (conditional complexity)

static inline int parse_edk(
    struct aws_allocator *allocator, struct aws_cryptosdk_edk *edk, struct aws_byte_cursor *cur) {
    uint16_t field_len;

    memset(edk, 0, sizeof(*edk));

    if (!aws_byte_cursor_read_be16(cur, &field_len)) goto SHORT_BUF;
    if (aws_byte_buf_init(&edk->provider_id, allocator, field_len)) goto MEM_ERR;
    if (!aws_byte_cursor_read_and_fill_buffer(cur, &edk->provider_id)) goto SHORT_BUF;

    if (!aws_byte_cursor_read_be16(cur, &field_len)) goto SHORT_BUF;
    if (aws_byte_buf_init(&edk->provider_info, allocator, field_len)) goto MEM_ERR;
    if (!aws_byte_cursor_read_and_fill_buffer(cur, &edk->provider_info)) goto SHORT_BUF;

    if (!aws_byte_cursor_read_be16(cur, &field_len)) goto SHORT_BUF;
    if (aws_byte_buf_init(&edk->ciphertext, allocator, field_len)) goto MEM_ERR;
    if (!aws_byte_cursor_read_and_fill_buffer(cur, &edk->ciphertext)) goto SHORT_BUF;

    return AWS_OP_SUCCESS;

SHORT_BUF:
    aws_cryptosdk_edk_clean_up(edk);
    return aws_raise_error(AWS_ERROR_SHORT_BUFFER);
MEM_ERR:
    aws_cryptosdk_edk_clean_up(edk);
    // The _init function should have already raised an AWS_ERROR_OOM
    return AWS_OP_ERR;
}