a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch#include "lib.h"

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch#include "array.h"

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch#include "str.h"

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch#include "strfuncs.h"

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch#include "istream.h"

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch#include "smtp-parser.h"

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch#include "smtp-reply-parser.h"

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch#include <ctype.h>

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschenum smtp_reply_parser_state {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch SMTP_REPLY_PARSE_STATE_INIT = 0,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch SMTP_REPLY_PARSE_STATE_CODE,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch SMTP_REPLY_PARSE_STATE_SEP,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch SMTP_REPLY_PARSE_STATE_TEXT,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch SMTP_REPLY_PARSE_STATE_EHLO_SPACE,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch SMTP_REPLY_PARSE_STATE_EHLO_GREET,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch SMTP_REPLY_PARSE_STATE_CR,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch SMTP_REPLY_PARSE_STATE_CRLF,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch SMTP_REPLY_PARSE_STATE_LF

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch};

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschstruct smtp_reply_parser_state_data {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch enum smtp_reply_parser_state state;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch unsigned int line;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch struct smtp_reply *reply;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch ARRAY_TYPE(const_string) reply_lines;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch size_t reply_size;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch bool last_line:1;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch};

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschstruct smtp_reply_parser {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch struct istream *input;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch size_t max_reply_size;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch const unsigned char *begin, *cur, *end;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch string_t *strbuf;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch struct smtp_reply_parser_state_data state;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch pool_t reply_pool;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch char *error;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch bool enhanced_codes:1;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch bool ehlo:1;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch};

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschstatic inline void ATTR_FORMAT(2, 3)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschsmtp_reply_parser_error(struct smtp_reply_parser *parser,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch const char *format, ...)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch{

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch va_list args;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch i_free(parser->error);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch va_start(args, format);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->error = i_strdup_vprintf(format, args);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch va_end(args);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch}

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschstruct smtp_reply_parser *

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschsmtp_reply_parser_init(struct istream *input, size_t max_reply_size)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch{

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch struct smtp_reply_parser *parser;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser = i_new(struct smtp_reply_parser, 1);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->max_reply_size =

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch (max_reply_size > 0 ? max_reply_size : (size_t)-1);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->input = input;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch i_stream_ref(input);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->strbuf = str_new(default_pool, 128);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return parser;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch}

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschvoid smtp_reply_parser_deinit(struct smtp_reply_parser **_parser)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch{

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch struct smtp_reply_parser *parser = *_parser;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch *_parser = NULL;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch str_free(&parser->strbuf);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch pool_unref(&parser->reply_pool);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch i_stream_unref(&parser->input);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch i_free(parser->error);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch i_free(parser);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch}

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschvoid smtp_reply_parser_set_stream(struct smtp_reply_parser *parser,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch struct istream *input)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch{

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch i_stream_unref(&parser->input);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (input != NULL) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->input = input;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch i_stream_ref(parser->input);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch}

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschstatic void

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschsmtp_reply_parser_restart(struct smtp_reply_parser *parser)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch{

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch str_truncate(parser->strbuf, 0);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch pool_unref(&parser->reply_pool);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch i_zero(&parser->state);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->reply_pool = pool_alloconly_create("smtp_reply", 256);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.reply = p_new(parser->reply_pool, struct smtp_reply, 1);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch p_array_init(&parser->state.reply_lines, parser->reply_pool, 8);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch}

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschstatic int smtp_reply_parse_code

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch(struct smtp_reply_parser *parser, unsigned int *code_r)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch{

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch const unsigned char *first = parser->cur;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch const unsigned char *p;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* Reply-code = %x32-35 %x30-35 %x30-39

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch while (parser->cur < parser->end && i_isdigit(*parser->cur))

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->cur++;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (str_len(parser->strbuf) + (parser->cur-first) > 3)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return -1;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch str_append_n(parser->strbuf, first, parser->cur - first);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (parser->cur == parser->end)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return 0;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (str_len(parser->strbuf) != 3)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return -1;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch p = str_data(parser->strbuf);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (p[0] < '2' || p[0] > '5' || p[1] > '5')

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return -1;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch *code_r = (p[0] - '0')*100 + (p[1] - '0')*10 + (p[2] - '0');

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch str_truncate(parser->strbuf, 0);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return 1;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch}

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschstatic int smtp_reply_parse_textstring(struct smtp_reply_parser *parser)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch{

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch const unsigned char *first = parser->cur;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* textstring = 1*(%d09 / %d32-126) ; HT, SP, Printable US-ASCII

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch while (parser->cur < parser->end && smtp_char_is_textstr(*parser->cur))

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->cur++;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (((parser->cur-first) + parser->state.reply_size +

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch str_len(parser->strbuf)) > parser->max_reply_size) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch smtp_reply_parser_error(parser,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch "Reply exceeds size limit");

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return -1;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch str_append_n(parser->strbuf, first, parser->cur - first);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (parser->cur == parser->end)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return 0;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return 1;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch}

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschstatic int smtp_reply_parse_ehlo_domain(struct smtp_reply_parser *parser)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch{

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch const unsigned char *first = parser->cur;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* Domain [ SP ...

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch while (parser->cur < parser->end && *parser->cur != ' ' &&

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch smtp_char_is_textstr(*parser->cur))

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->cur++;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (((parser->cur-first) + parser->state.reply_size +

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch str_len(parser->strbuf)) > parser->max_reply_size) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch smtp_reply_parser_error(parser,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch "Reply exceeds size limit");

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return -1;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch str_append_n(parser->strbuf, first, parser->cur - first);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (parser->cur == parser->end)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return 0;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return 1;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch}

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschstatic int smtp_reply_parse_ehlo_greet(struct smtp_reply_parser *parser)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch{

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch const unsigned char *first = parser->cur;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* ehlo-greet = 1*(%d0-9 / %d11-12 / %d14-127)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (parser->cur == parser->end)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return 0;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (smtp_char_is_ehlo_greet(*parser->cur)) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch for (;;) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch while (parser->cur < parser->end &&

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch smtp_char_is_textstr(*parser->cur))

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->cur++;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (((parser->cur-first) + parser->state.reply_size +

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch str_len(parser->strbuf)) >

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->max_reply_size) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch smtp_reply_parser_error(parser,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch "Reply exceeds size limit");

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return -1;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* sanitize bad characters */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch str_append_n(parser->strbuf,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch first, parser->cur - first);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (parser->cur == parser->end)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return 0;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (!smtp_char_is_ehlo_greet(*parser->cur))

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch break;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch str_append_c(parser->strbuf, ' ');

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->cur++;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch first = parser->cur;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return 1;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch}

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschstatic inline const char *_chr_sanitize(unsigned char c)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch{

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (c >= 0x20 && c < 0x7F)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return t_strdup_printf("'%c'", c);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return t_strdup_printf("0x%02x", c);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch}

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschstatic void

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschsmtp_reply_parse_enhanced_code(struct smtp_reply_parser *parser,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch const char **pos)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch{

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch const char *p = *pos;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch unsigned int digits, x, y, z;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch unsigned int prevx = parser->state.reply->enhanced_code.x,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch prevy = parser->state.reply->enhanced_code.y,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch prevz = parser->state.reply->enhanced_code.z;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (prevx == 9)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return; /* failed on earlier line */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.reply->enhanced_code.x = 9;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.reply->enhanced_code.y = 0;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.reply->enhanced_code.z = 0;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* status-code ::= class "." subject "." detail

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* class */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (p[1] != '.' || (p[0] != '2' && p[0] != '4' && p[0] != '5'))

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch x = p[0] - '0';

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch p += 2;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* subject */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch digits = 0;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch y = 0;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch while (*p != '\0' && i_isdigit(*p) && digits++ < 3) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch y = y*10 + (*p - '0');

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch p++;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (digits == 0 || *p != '.')

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch p++;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* detail */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch digits = 0;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch z = 0;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch while (*p != '\0' && i_isdigit(*p) && digits++ < 3) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch z = z*10 + (*p - '0');

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch p++;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (digits == 0 || (*p != ' ' && *p != '\r' && *p != '\n'))

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch p++;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* code is syntactically valid; strip code from textstring */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch *pos = p;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* check for match with status */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (x != parser->state.reply->status / 100) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* ignore code */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* check for code consistency */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (parser->state.line > 0 &&

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch (prevx != x || prevy != y || prevz != z)) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* ignore code */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.reply->enhanced_code.x = x;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.reply->enhanced_code.y = y;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.reply->enhanced_code.z = z;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch}

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschstatic void smtp_reply_parser_finish_line(struct smtp_reply_parser *parser)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch{

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch const char *text = str_c(parser->strbuf);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (parser->enhanced_codes && str_len(parser->strbuf) > 5) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch smtp_reply_parse_enhanced_code(parser, &text);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.line++;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.reply_size += str_len(parser->strbuf);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch text = p_strdup(parser->reply_pool, text);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch array_append(&parser->state.reply_lines, &text, 1);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch str_truncate(parser->strbuf, 0);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch}

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschstatic int smtp_reply_parse_more(struct smtp_reply_parser *parser)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch{

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch unsigned int status;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch int ret;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /*

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch for (;;) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch switch (parser->state.state) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch case SMTP_REPLY_PARSE_STATE_INIT:

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch smtp_reply_parser_restart(parser);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.state = SMTP_REPLY_PARSE_STATE_CODE;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* fall through */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* Reply-code */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch case SMTP_REPLY_PARSE_STATE_CODE:

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if ((ret=smtp_reply_parse_code(parser, &status)) <= 0) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (ret < 0) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch smtp_reply_parser_error(parser,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch "Invalid status code in reply");

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return ret;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (parser->state.line == 0) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.reply->status = status;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch } else if (status != parser->state.reply->status) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch smtp_reply_parser_error(parser,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch "Inconsistent status codes in reply");

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return -1;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.state = SMTP_REPLY_PARSE_STATE_SEP;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (parser->cur == parser->end)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return 0;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* fall through */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* "-" / SP / CRLF */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch case SMTP_REPLY_PARSE_STATE_SEP:

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch switch (*parser->cur) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* "-" [ textstring ] CRLF */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch case '-':

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->cur++;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.last_line = FALSE;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.state =

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch SMTP_REPLY_PARSE_STATE_TEXT;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch break;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* SP [ textstring ] CRLF ; allow missing text */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch case ' ':

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->cur++;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.state =

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch SMTP_REPLY_PARSE_STATE_TEXT;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.last_line = TRUE;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch break;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* CRLF */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch case '\r':

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch case '\n':

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.last_line = TRUE;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.state = SMTP_REPLY_PARSE_STATE_CR;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch break;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch default:

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch smtp_reply_parser_error(parser,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch "Encountered unexpected %s after reply status code",

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch _chr_sanitize(*parser->cur));

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return -1;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (parser->state.state != SMTP_REPLY_PARSE_STATE_TEXT)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch break;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* fall through */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* textstring / (Domain [ SP ehlo-greet ]) */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch case SMTP_REPLY_PARSE_STATE_TEXT:

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (parser->ehlo &&

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.reply->status == 250 &&

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.line == 0) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* handle first line of EHLO success response

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if ((ret=smtp_reply_parse_ehlo_domain(parser)) <= 0)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return ret;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.state =

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch SMTP_REPLY_PARSE_STATE_EHLO_SPACE;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (parser->cur == parser->end)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return 0;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch break;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if ((ret=smtp_reply_parse_textstring(parser)) <= 0)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return ret;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.state = SMTP_REPLY_PARSE_STATE_CR;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (parser->cur == parser->end)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return 0;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* fall through */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* CR */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch case SMTP_REPLY_PARSE_STATE_CR:

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (*parser->cur == '\r') {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->cur++;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.state =

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch SMTP_REPLY_PARSE_STATE_CRLF;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch } else {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.state =

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch SMTP_REPLY_PARSE_STATE_LF;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (parser->cur == parser->end)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return 0;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* fall through */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* CRLF / LF */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch case SMTP_REPLY_PARSE_STATE_CRLF:

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch case SMTP_REPLY_PARSE_STATE_LF:

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (*parser->cur != '\n') {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (parser->state.state ==

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch SMTP_REPLY_PARSE_STATE_CRLF) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch smtp_reply_parser_error(parser,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch "Encountered stray CR in reply text");

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch } else {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch smtp_reply_parser_error(parser,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch "Encountered stray %s in reply text",

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch _chr_sanitize(*parser->cur));

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return -1;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->cur++;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch smtp_reply_parser_finish_line(parser);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (parser->state.last_line) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.state =

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch SMTP_REPLY_PARSE_STATE_INIT;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return 1;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.state = SMTP_REPLY_PARSE_STATE_CODE;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch break;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* SP ehlo-greet */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch case SMTP_REPLY_PARSE_STATE_EHLO_SPACE:

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (*parser->cur != ' ') {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.state = SMTP_REPLY_PARSE_STATE_CR;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch break;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->cur++;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch str_append_c(parser->strbuf, ' ');

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.state = SMTP_REPLY_PARSE_STATE_EHLO_GREET;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (parser->cur == parser->end)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return 0;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* fall through */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /* ehlo-greet */

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch case SMTP_REPLY_PARSE_STATE_EHLO_GREET:

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if ((ret=smtp_reply_parse_ehlo_greet(parser)) <= 0)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return ret;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.state = SMTP_REPLY_PARSE_STATE_CR;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (parser->cur == parser->end)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return 0;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch break;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch default:

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch i_unreached();

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch i_unreached();

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return -1;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch}

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschstatic int smtp_reply_parse(struct smtp_reply_parser *parser)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch{

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch size_t size;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch int ret;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch while ((ret = i_stream_read_more(parser->input,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch &parser->begin, &size)) > 0) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->cur = parser->begin;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->end = parser->cur + size;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if ((ret = smtp_reply_parse_more(parser)) < 0)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return -1;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch i_stream_skip(parser->input, parser->cur - parser->begin);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (ret > 0)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return 1;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch i_assert(ret != -2);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (ret < 0) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch i_assert(parser->input->eof);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (parser->input->stream_errno == 0) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if (parser->state.state == SMTP_REPLY_PARSE_STATE_INIT)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return 0;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch smtp_reply_parser_error(parser,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch "Premature end of input");

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch } else {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch smtp_reply_parser_error(parser,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch "Stream error: %s",

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch i_stream_get_error(parser->input));

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return ret;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch}

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschint smtp_reply_parse_next(struct smtp_reply_parser *parser,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch bool enhanced_codes, struct smtp_reply **reply_r,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch const char **error_r)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch{

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch int ret;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch i_assert(parser->state.state == SMTP_REPLY_PARSE_STATE_INIT ||

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch (parser->enhanced_codes == enhanced_codes && !parser->ehlo));

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->enhanced_codes = enhanced_codes;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->ehlo = FALSE;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch i_free_and_null(parser->error);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /*

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if ((ret=smtp_reply_parse(parser)) <= 0) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch *error_r = parser->error;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return ret;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.state = SMTP_REPLY_PARSE_STATE_INIT;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.reply->text_lines =

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch array_idx(&parser->state.reply_lines, 0);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch *reply_r = parser->state.reply;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return 1;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch}

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Boschint smtp_reply_parse_ehlo(struct smtp_reply_parser *parser,

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch struct smtp_reply **reply_r, const char **error_r)

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch{

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch int ret;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch i_assert(parser->state.state == SMTP_REPLY_PARSE_STATE_INIT ||

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch (!parser->enhanced_codes && parser->ehlo));

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->enhanced_codes = FALSE;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->ehlo = TRUE;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch i_free_and_null(parser->error);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch /*

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch if ((ret=smtp_reply_parse(parser)) <= 0) {

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch *error_r = parser->error;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return ret;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch }

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.state = SMTP_REPLY_PARSE_STATE_INIT;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch parser->state.reply->text_lines =

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch array_idx(&parser->state.reply_lines, 0);

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch *reply_r = parser->state.reply;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch return 1;

a8433392e8a5ddfe8a125716f62b2a4dc8f1f01eStephan Bosch}