1 files changed, 89 insertions, 0 deletions
diff --git a/src/lib-smtp/smtp-parser.h b/src/lib-smtp/smtp-parser.h
new file mode 100644
index 0000000..9b76d2c
--- /dev/null
+++ b/src/lib-smtp/smtp-parser.h
@@ -0,0 +1,89 @@
+#ifndef SMTP_PARSER_H
+#define SMTP_PARSER_H
+
+/*
+ * Character definitions
+ */
+
+extern const uint16_t smtp_xtext_char_mask;
+extern const uint16_t smtp_atext_char_mask;
+extern const uint16_t smtp_dcontent_char_mask;
+extern const uint16_t smtp_qtext_char_mask;
+extern const uint16_t smtp_textstr_char_mask;
+extern const uint16_t smtp_esmtp_value_char_mask;
+extern const uint16_t smtp_ehlo_param_char_mask;
+extern const uint16_t smtp_ehlo_greet_char_mask;
+extern const uint16_t smtp_qpair_char_mask;
+
+extern const uint16_t smtp_char_lookup[256];
+
+static inline bool
+smtp_char_is_xtext(unsigned char ch) {
+	return (smtp_char_lookup[ch] & smtp_xtext_char_mask) != 0;
+}
+static inline bool
+smtp_char_is_atext(unsigned char ch) {
+	return (smtp_char_lookup[ch] & smtp_atext_char_mask) != 0;
+}
+static inline bool
+smtp_char_is_dcontent(unsigned char ch) {
+	return (smtp_char_lookup[ch] & smtp_dcontent_char_mask) != 0;
+}
+static inline bool
+smtp_char_is_qtext(unsigned char ch) {
+	return (smtp_char_lookup[ch] & smtp_qtext_char_mask) != 0;
+}
+static inline bool
+smtp_char_is_textstr(unsigned char ch) {
+	return (smtp_char_lookup[ch] & smtp_textstr_char_mask) != 0;
+}
+static inline bool
+smtp_char_is_esmtp_value(unsigned char ch) {
+	return (smtp_char_lookup[ch] & smtp_esmtp_value_char_mask) != 0;
+}
+static inline bool
+smtp_char_is_ehlo_param(unsigned char ch) {
+	return (smtp_char_lookup[ch] & smtp_ehlo_param_char_mask) != 0;
+}
+static inline bool
+smtp_char_is_ehlo_greet(unsigned char ch) {
+	return (smtp_char_lookup[ch] & smtp_ehlo_greet_char_mask) != 0;
+}
+static inline bool
+smtp_char_is_qpair(unsigned char ch) {
+	return (smtp_char_lookup[ch] & smtp_qpair_char_mask) != 0;
+}
+
+/*
+ * SMTP parser
+ */
+
+struct smtp_parser {
+	pool_t pool;
+	const char *error;
+
+	const unsigned char *begin, *cur, *end;
+};
+
+void smtp_parser_init(struct smtp_parser *parser,
+	pool_t pool, const char *data);
+string_t *smtp_parser_get_tmpbuf(struct smtp_parser *parser, size_t size);
+
+/*
+ * Common syntax
+ */
+
+int smtp_parser_parse_domain(struct smtp_parser *parser,
+	const char **value_r);
+int smtp_parser_parse_address_literal(struct smtp_parser *parser,
+	const char **value_r, struct ip_addr *ip_r);
+int smtp_parser_parse_atom(struct smtp_parser *parser,
+	const char **value_r);
+int smtp_parser_parse_quoted_string(struct smtp_parser *parser,
+	const char **value_r);
+int smtp_parser_parse_string(struct smtp_parser *parser,
+	const char **value_r);
+int smtp_parser_parse_xtext(struct smtp_parser *parser,
+	string_t *out);
+
+#endif