int rfc822_parse_phrase(struct rfc822_parser_context *ctx, string_t *str)
{
int ret;
/*
phrase = 1*word / obs-phrase
word = atom / quoted-string
obs-phrase = word *(word / "." / CFWS)
*/
if (ctx->data == ctx->end)
return 0;
if (*ctx->data == '.')
return -1;
for (;;) {
if (*ctx->data == '"')
ret = rfc822_parse_quoted_string(ctx, str);
else
ret = rfc822_parse_atom_or_dot(ctx, str);
if (ret <= 0)
return ret;
if (!IS_ATEXT(*ctx->data) && *ctx->data != '"'
&& *ctx->data != '.')
break;
str_append_c(str, ' ');
}
return rfc822_skip_lwsp(ctx);
}
static void test_rfc822_parse_quoted_string(void)
{
static const struct {
const char *input, *output;
int ret;
} tests[] = {
{ "\"", "", -1 },
{ "\"\"", "", 0 },
{ "\"foo\"", "foo", 0 },
{ "\"\"foo", "", 1 },
{ "\"\"\"", "", 1 },
{ "\"\\\"\"", "\"", 0 },
{ "\"\\\\\"", "\\", 0 },
{ "\"\\\\foo\\\\foo\\\\\"", "\\foo\\foo\\", 0 }
};
struct rfc822_parser_context parser;
string_t *str = t_str_new(64);
unsigned int i = 0;
test_begin("rfc822 parse quoted string");
for (i = 0; i < N_ELEMENTS(tests); i++) {
rfc822_parser_init(&parser, (const void *)tests[i].input,
strlen(tests[i].input), NULL);
test_assert_idx(rfc822_parse_quoted_string(&parser, str) == tests[i].ret, i);
test_assert_idx(tests[i].ret < 0 ||
strcmp(tests[i].output, str_c(str)) == 0, i);
str_truncate(str, 0);
}
test_end();
}
int rfc822_parse_content_param(struct rfc822_parser_context *ctx,
const char **key_r, const char **value_r)
{
string_t *tmp;
size_t value_pos;
int ret;
/* .. := *(";" parameter)
parameter := attribute "=" value
attribute := token
value := token / quoted-string
*/
*key_r = NULL;
*value_r = NULL;
if (ctx->data == ctx->end)
return 0;
if (*ctx->data != ';')
return -1;
ctx->data++;
if (rfc822_skip_lwsp(ctx) <= 0)
return -1;
tmp = t_str_new(64);
if (rfc822_parse_mime_token(ctx, tmp) <= 0)
return -1;
str_append_c(tmp, '\0');
value_pos = str_len(tmp);
if (*ctx->data != '=')
return -1;
ctx->data++;
if ((ret = rfc822_skip_lwsp(ctx)) <= 0) {
/* broken / no value */
} else if (*ctx->data == '"') {
ret = rfc822_parse_quoted_string(ctx, tmp);
(void)str_unescape(str_c_modifiable(tmp) + value_pos);
} else if (ctx->data != ctx->end && *ctx->data == '=') {
/* workaround for broken input:
name==?utf-8?b?...?= */
while (ctx->data != ctx->end && *ctx->data != ';' &&
*ctx->data != ' ' && *ctx->data != '\t' &&
*ctx->data != '\r' && *ctx->data != '\n') {
str_append_c(tmp, *ctx->data);
ctx->data++;
}
} else {
ret = rfc822_parse_mime_token(ctx, tmp);
}
*key_r = str_c(tmp);
*value_r = *key_r + value_pos;
return ret < 0 ? -1 : 1;
}
