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#225: Parse this: Tue Feb 16 2016 17:23:34 GMT+0800
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@dinhvh
dinhvh committed Mar 27, 2016
1 parent 151b63d commit de603c1
Showing 1 changed file with 119 additions and 65 deletions.
184 changes: 119 additions & 65 deletions src/low-level/imf/mailimf.c
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Expand Up @@ -108,6 +108,10 @@ static int mailimf_date_parse(const char * message, size_t length,
size_t * indx,
int * pday, int * pmonth, int * pyear);

static int mailimf_broken_date_parse(const char * message, size_t length,
size_t * indx,
int * pday, int * pmonth, int * pyear);

static int mailimf_year_parse(const char * message, size_t length,
size_t * indx, int * result);

Expand Down Expand Up @@ -2063,8 +2067,12 @@ int mailimf_date_time_parse(const char * message, size_t length,
r = mailimf_day_of_week_parse(message, length, &cur_token, &day_of_week);
if (r == MAILIMF_NO_ERROR) {
r = mailimf_comma_parse(message, length, &cur_token);
if (r != MAILIMF_NO_ERROR)
if (r == MAILIMF_ERROR_PARSE) {
// ignore parse error.
}
else if (r != MAILIMF_NO_ERROR) {
return r;
}
}
else if (r != MAILIMF_ERROR_PARSE)
return r;
Expand All @@ -2073,8 +2081,12 @@ int mailimf_date_time_parse(const char * message, size_t length,
month = 0;
year = 0;
r = mailimf_date_parse(message, length, &cur_token, &day, &month, &year);
if (r != MAILIMF_NO_ERROR)
if (r == MAILIMF_ERROR_PARSE) {
r = mailimf_broken_date_parse(message, length, &cur_token, &day, &month, &year);
}
else if (r != MAILIMF_NO_ERROR) {
return r;
}

r = mailimf_fws_parse(message, length, &cur_token);
if (r != MAILIMF_NO_ERROR)
Expand Down Expand Up @@ -2277,6 +2289,42 @@ static int mailimf_date_parse(const char * message, size_t length,
return MAILIMF_NO_ERROR;
}

static int mailimf_broken_date_parse(const char * message, size_t length,
size_t * indx,
int * pday, int * pmonth, int * pyear)
{
size_t cur_token;
int day;
int month;
int year;
int r;

cur_token = * indx;

month = 1;
r = mailimf_month_parse(message, length, &cur_token, &month);
if (r != MAILIMF_NO_ERROR)
return r;

day = 1;
r = mailimf_day_parse(message, length, &cur_token, &day);
if (r != MAILIMF_NO_ERROR)
return r;

year = 2001;
r = mailimf_year_parse(message, length, &cur_token, &year);
if (r != MAILIMF_NO_ERROR)
return r;

* pday = day;
* pmonth = month;
* pyear = year;

* indx = cur_token;

return MAILIMF_NO_ERROR;
}

/*
year = 4*DIGIT / obs-year
*/
Expand Down Expand Up @@ -2696,7 +2744,7 @@ enum {
};

static int mailimf_zone_parse(const char * message, size_t length,
size_t * indx, int * result)
size_t * indx, int * result)
{
int zone;
int sign;
Expand All @@ -2720,74 +2768,80 @@ static int mailimf_zone_parse(const char * message, size_t length,
int state;

state = STATE_ZONE_1;

while (state <= 2) {
switch (state) {
case STATE_ZONE_1:
switch (message[cur_token]) {
case 'G':
if (message[cur_token + 1] == 'M' && message[cur_token + 2] == 'T') {
zone = 0;
state = STATE_ZONE_OK;
}
else {
state = STATE_ZONE_ERR;
}
break;
case 'E':
zone = -5;
state = STATE_ZONE_2;
break;
case 'C':
zone = -6;
state = STATE_ZONE_2;
break;
case 'M':
zone = -7;
state = STATE_ZONE_2;
break;
case 'P':
zone = -8;
state = STATE_ZONE_2;
break;
default:
state = STATE_ZONE_CONT;
break;
}
break;
case STATE_ZONE_2:
switch (message[cur_token + 1]) {
case 'S':
state = STATE_ZONE_3;
break;
case 'D':
zone ++;
state = STATE_ZONE_3;
break;
default:
state = STATE_ZONE_ERR;
break;
}
break;
case STATE_ZONE_3:
if (message[cur_token + 2] == 'T') {
zone *= 100;
state = STATE_ZONE_OK;
}
else
state = STATE_ZONE_ERR;
break;
case STATE_ZONE_1:
switch (message[cur_token]) {
case 'G':
if (message[cur_token + 1] == 'M' && message[cur_token + 2] == 'T') {
if ((cur_token + 3 < length) && ((message[cur_token + 3] == '+') || (message[cur_token + 3] == '-'))) {
cur_token += 3;
state = STATE_ZONE_CONT;
}
else {
zone = 0;
state = STATE_ZONE_OK;
}
}
else {
state = STATE_ZONE_ERR;
}
break;
case 'E':
zone = -5;
state = STATE_ZONE_2;
break;
case 'C':
zone = -6;
state = STATE_ZONE_2;
break;
case 'M':
zone = -7;
state = STATE_ZONE_2;
break;
case 'P':
zone = -8;
state = STATE_ZONE_2;
break;
default:
state = STATE_ZONE_CONT;
break;
}
break;
case STATE_ZONE_2:
switch (message[cur_token + 1]) {
case 'S':
state = STATE_ZONE_3;
break;
case 'D':
zone ++;
state = STATE_ZONE_3;
break;
default:
state = STATE_ZONE_ERR;
break;
}
break;
case STATE_ZONE_3:
if (message[cur_token + 2] == 'T') {
zone *= 100;
state = STATE_ZONE_OK;
}
else
state = STATE_ZONE_ERR;
break;
}
}

switch (state) {
case STATE_ZONE_OK:
* result = zone;
* indx = cur_token + 3;
return MAILIMF_NO_ERROR;
case STATE_ZONE_ERR:
return MAILIMF_ERROR_PARSE;
case STATE_ZONE_OK:
* result = zone;
* indx = cur_token + 3;
return MAILIMF_NO_ERROR;

case STATE_ZONE_ERR:
return MAILIMF_ERROR_PARSE;
}
}

Expand Down

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