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Fixed dotstuff and while() loop when writing the buffer to disk

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Signed-off-by: Janos SUTO <sj@acts.hu>
This commit is contained in:
Janos SUTO 2021-07-18 16:05:36 +02:00
parent 4fd0fd25c5
commit fbe7a76b65
1 changed files with 9 additions and 8 deletions
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17
src/smtp.c
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@ -84,15 +84,15 @@ void process_data(struct smtp_session *session, char *buf, int buflen){
// write line to file // write line to file
int written=0, n_writes=0; int written=0, n_writes=0;
// In the DATA phase skip the 1st character if it's a dot (.)
// and there are more characters before the trailing CR-LF
//
// See https://www.ietf.org/rfc/rfc5321.html#section-4.5.2 for more.
int dotstuff = 0;
if(*buf == '.' && buflen > 1 && *(buf+1) != '\r' && *(buf+1) != '\n') dotstuff = 1;
while(written < buflen) { while(written < buflen) {
// In the DATA phase skip the 1st character if it's a dot (.)
// and there are more characters before the trailing CR-LF
//
// See https://www.ietf.org/rfc/rfc5321.html#section-4.5.2 for more.
int dotstuff = 0;
if(*buf == '.' && buflen > 1 && *(buf+1) != '\r' && *(buf+1) != '\n') dotstuff = 1;
int len = write(session->fd, buf+dotstuff+written, buflen-dotstuff-written); int len = write(session->fd, buf+dotstuff+written, buflen-dotstuff-written);
n_writes++; n_writes++;
@ -101,6 +101,7 @@ void process_data(struct smtp_session *session, char *buf, int buflen){
if(len != buflen-dotstuff) syslog(LOG_PRIORITY, "WARN: partial write: %d/%d bytes (round: %d)", len, buflen-dotstuff, n_writes); if(len != buflen-dotstuff) syslog(LOG_PRIORITY, "WARN: partial write: %d/%d bytes (round: %d)", len, buflen-dotstuff, n_writes);
written += len + dotstuff; written += len + dotstuff;
session->tot_len += len; session->tot_len += len;
dotstuff = 0;
} }
else syslog(LOG_PRIORITY, "ERROR (line: %d) process_data(): written %d bytes", __LINE__, len); else syslog(LOG_PRIORITY, "ERROR (line: %d) process_data(): written %d bytes", __LINE__, len);
} }