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If the calculated date based on Date: header line differs more than 1 week then override it with the data parsed from the first Received: line

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Signed-off-by: Janos SUTO <sj@acts.hu>
This commit is contained in:
Janos SUTO 2021-07-20 13:00:53 +02:00
parent 8ffcb6e664
commit b2a1666c41
4 changed files with 23 additions and 1 deletions
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2
src/defs.h
View File

@ -184,11 +184,13 @@ struct parser_state {
int saved_size;
unsigned int writebufpos;
unsigned int abufpos;
unsigned int received_header;
char attachedfile[RND_STR_LEN+SMALLBUFSIZE];
char message_id[SMALLBUFSIZE];
char message_id_hash[2*DIGEST_LENGTH+1];
char miscbuf[MAX_TOKEN_LEN];
char qpbuf[MAX_TOKEN_LEN];
char receivedbuf[SMALLBUFSIZE];
unsigned long n_token;
unsigned long n_subject_token;
unsigned long n_body_token;

18
src/parser.c
View File

@ -112,6 +112,15 @@ void post_parse(struct session_data *sdata, struct parser_state *state, struct c
if(sdata->internal_recipient == 1 && sdata->external_recipient == 1) sdata->direction = DIRECTION_INTERNAL_AND_OUTGOING;
}
char *q = strrchr(state->receivedbuf, ';');
if(q){
time_t received_timestamp = parse_date_header(q+1);
if(received_timestamp > 10000000){
// If the calculated date based on Date: header line differs more than 1 week
// then we'll override it with the data parsed from the first Received: line
if(labs(received_timestamp - sdata->sent) > 604800) sdata->sent = received_timestamp;
}
}
for(i=1; i<=state->n_attachments; i++){
char puf[SMALLBUFSIZE];
@ -440,7 +449,10 @@ int parse_line(char *buf, struct parser_state *state, struct session_data *sdata
}
else if(strncasecmp(buf, "Delivery-date:", strlen("Delivery-date:")) == 0 && sdata->delivered == 0) sdata->delivered = parse_date_header(buf);
else if(strncasecmp(buf, "Received:", strlen("Received:")) == 0) state->message_state = MSG_RECEIVED;
else if(strncasecmp(buf, "Received:", strlen("Received:")) == 0){
state->message_state = MSG_RECEIVED;
state->received_header++;
}
else if(cfg->extra_to_field[0] != '\0' && strncasecmp(buf, cfg->extra_to_field, strlen(cfg->extra_to_field)) == 0){
state->message_state = MSG_TO;
buf += strlen(cfg->extra_to_field);
@ -458,6 +470,10 @@ int parse_line(char *buf, struct parser_state *state, struct session_data *sdata
fill_attachment_name_buf(state, buf);
}
if(state->received_header == 1 && state->message_state == MSG_RECEIVED){
memcpy(&(state->receivedbuf[strlen(state->receivedbuf)]), buf, len);
}
/* we are interested in only From:, To:, Subject:, Received:, Content-*: header lines */
if(state->message_state <= 0) return 0;
}

2
src/parser_utils.c
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@ -49,6 +49,7 @@ void init_state(struct parser_state *state){
memset(state->message_id_hash, 0, 2*DIGEST_LENGTH+1);
memset(state->miscbuf, 0, MAX_TOKEN_LEN);
memset(state->qpbuf, 0, MAX_TOKEN_LEN);
memset(state->receivedbuf, 0, sizeof(state->receivedbuf));
memset(state->type, 0, TINYBUFSIZE);
@ -67,6 +68,7 @@ void init_state(struct parser_state *state){
state->writebufpos = 0;
state->abufpos = 0;
state->received_header = 0;
inithash(state->boundaries);
inithash(state->rcpt);

2
src/test.c
View File

@ -195,6 +195,8 @@ int main(int argc, char **argv){
printf("spam: %d\n", sdata.spam_message);
printf("1st received line: %s\n", state.receivedbuf);
if(sdata.internal_sender == 0 && sdata.internal_recipient == 0) printf("NOT IN mydomains\n");
printf("\n\n");