static int imap_parser_read_atom(struct imap_parser *parser,
const unsigned char *data, size_t data_size)
{
size_t i;
/* read until we've found space, CR or LF. */
for (i = parser->cur_pos; i < data_size; i++) {
if (data[i] == ' ' || is_linebreak(data[i])) {
imap_parser_save_arg(parser, data, i);
break;
} else if (data[i] == ')') {
if (parser->list_arg != NULL ||
(parser->flags & IMAP_PARSE_FLAG_INSIDE_LIST) != 0) {
imap_parser_save_arg(parser, data, i);
break;
} else if ((parser->flags &
IMAP_PARSE_FLAG_ATOM_ALLCHARS) == 0) {
parser->error = "Unexpected ')'";
return FALSE;
}
/* assume it's part of the atom */
} else if (!is_valid_atom_char(parser, data[i]))
return FALSE;
}
parser->cur_pos = i;
return parser->cur_type == ARG_PARSE_NONE;
}
static bool imap_parser_read_literal_data(struct imap_parser *parser,
const unsigned char *data,
size_t data_size)
{
if (parser->literal_skip_crlf) {
/* skip \r\n or \n, anything else gives an error */
if (data_size == 0)
return FALSE;
if (*data == '\r') {
parser->line_size++;
data++; data_size--;
i_stream_skip(parser->input, 1);
if (data_size == 0)
return FALSE;
}
if (*data != '\n') {
parser->error = IMAP_PARSE_ERROR_BAD_SYNTAX;
parser->error_msg = "Missing LF after literal size";
return FALSE;
}
parser->line_size++;
data++; data_size--;
i_stream_skip(parser->input, 1);
parser->literal_skip_crlf = FALSE;
i_assert(parser->cur_pos == 0);
}
if ((parser->flags & IMAP_PARSE_FLAG_LITERAL_SIZE) == 0 ||
parser->cur_type == ARG_PARSE_LITERAL_DATA_FORCED) {
/* now we just wait until we've read enough data */
if (data_size < parser->literal_size)
return FALSE;
else {
imap_parser_save_arg(parser, data,
(size_t)parser->literal_size);
parser->cur_pos = (size_t)parser->literal_size;
return TRUE;
}
} else {
/* we want to save only literal size, not the literal itself. */
parser->literal_size_return = TRUE;
imap_parser_save_arg(parser, uchar_empty_ptr, 0);
return FALSE;
}
}
static bool imap_parser_read_text(struct imap_parser *parser,
const unsigned char *data, size_t data_size)
{
size_t i;
/* read until end of line */
for (i = parser->cur_pos; i < data_size; i++) {
if (is_linebreak(data[i])) {
imap_parser_save_arg(parser, data, i);
break;
}
}
parser->cur_pos = i;
return parser->cur_type == ARG_PARSE_NONE;
}
static bool imap_parser_read_string(struct imap_parser *parser,
const unsigned char *data, size_t data_size)
{
size_t i;
/* read until we've found non-escaped ", CR or LF */
for (i = parser->cur_pos; i < data_size; i++) {
if (data[i] == '"') {
imap_parser_save_arg(parser, data, i);
i++; /* skip the trailing '"' too */
break;
}
if (data[i] == '\\') {
if (i+1 == data_size) {
/* known data ends with '\' - leave it to
next time as well if it happens to be \" */
break;
}
/* save the first escaped char */
if (parser->str_first_escape < 0)
parser->str_first_escape = i;
/* skip the escaped char */
i++;
}
/* check linebreaks here, so escaping CR/LF isn't possible.
string always ends with '"', so it's an error if we found
a linebreak.. */
if (is_linebreak(data[i]) &&
(parser->flags & IMAP_PARSE_FLAG_MULTILINE_STR) == 0) {
parser->error = IMAP_PARSE_ERROR_BAD_SYNTAX;
parser->error_msg = "Missing '\"'";
return FALSE;
}
}
parser->cur_pos = i;
return parser->cur_type == ARG_PARSE_NONE;
}
