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ports/mail/vpopmail/files/patch-vdelivermail.c
Bryan Drewery 89c0646bba - Add support to have vdelivermail send to stdout by defining 
DELIVER_TO_STDOUT in the environment. This is useful when
  using dovecot as an LDA. See more discussion at:
  http://www.mail-archive.com/vchkpw@inter7.com/msg26694.html
2013-07-23 16:01:03 +00:00

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Description: SpamAssassin support, build optimization
Add SpamAssassin support.
Drop the unneeded MAX_ENV_BUFF definition.
Add DELIVER_TO_STDOUT support
Forwarded: not-needed
Author: Alex Dupre <ale@FreeBSD.org>,
Peter Pentchev <roam@FreeBSD.org>,
Bryan Drewery <bdrewery@FreeBSD.org>
Last-Update: 2013-07-23
--- vdelivermail.c.orig 2010-11-08 09:02:52.000000000 -0600
+++ vdelivermail.c 2013-07-23 10:44:11.392127088 -0500
@@ -74,6 +74,7 @@
int is_spam();
#endif
int DeleteMail = 0;
+int MoveMail = 0;
int local = 1;
#define MSG_BUF_SIZE 5000
@@ -353,7 +354,6 @@
int fdcopy (int write_fd, int read_fd, const char *extra_headers, size_t headerlen, char *address)
{
- char msgbuf[4096];
ssize_t file_count;
struct vlimits limits;
#ifdef SPAMASSASSIN
@@ -393,7 +393,7 @@
close(pim[1]);
if (execl(SPAMC_PROG, SPAMC_PROG, "-f", "-u",
address, 0) == -1) {
- while ((file_count = read(0, msgbuf, MSG_BUF_SIZE)) > 0) {
+ while ((file_count = read(0, msgbuf, sizeof(msgbuf))) > 0) {
write(1, msgbuf, file_count);
}
_exit(0);
@@ -421,18 +421,36 @@
/* read it in chunks and write it to the new file */
while ((file_count = read(read_fd, msgbuf, sizeof(msgbuf))) > 0) {
#ifdef SPAMASSASSIN
- if ( local==1 && InHeaders==1 &&
- (limits.delete_spam==1 || vpw->pw_gid & DELETE_SPAM) ) {
- printf("check is_spam\n");
- if (is_spam(msgbuf) == 1) {
+ if ( local==1 && InHeaders==1
+#if defined(SPAM_THRESHOLD) || defined(SPAM_JUNKFOLDER)
+ ) {
+#else
+ && (limits.delete_spam==1 || vpw->pw_gid & DELETE_SPAM) ) {
+#endif
+ switch (is_spam(msgbuf, file_count)) {
+ case 2:
+#ifdef SPAM_THRESHOLD
DeleteMail = 1;
return(0);
+#endif
+ case 1:
+ if (limits.delete_spam==1 || vpw->pw_gid & DELETE_SPAM) {
+ DeleteMail = 1;
+ return(0);
+ }
+#ifdef SPAM_JUNKFOLDER
+ MoveMail = 1;
+#endif
}
}
#endif
if ( write(write_fd, msgbuf, file_count) == -1 ) return -1;
}
-
+#ifdef SPAMASSASSIN
+ /* No body */
+ if (InHeaders==1) DeleteMail = 1;
+#endif
+
return 0;
}
@@ -481,8 +499,8 @@
int deliver_to_maildir (
const char *maildir,
const char *extra_headers,
- int read_fd,
- ssize_t msgsize)
+ int read_fd
+ )
{
#ifdef HOST_NAME_MAX
char hostname[HOST_NAME_MAX];
@@ -493,21 +511,36 @@
char local_file_tmp[FILE_SIZE];
char local_file_new[FILE_SIZE];
size_t headerlen;
+ struct stat sb;
+ size_t msgsize;
int write_fd;
char quota[80];
+#ifdef SPAM_JUNKFOLDER
+ struct stat mystatbuf;
+ char dir[MAX_BUFF];
+ char calling_dir[MAX_BUFF];
+#endif
headerlen = strlen (extra_headers);
- msgsize += headerlen;
+ if ((getenv("DELIVER_TO_STDOUT")) != NULL) {
+ if (fdcopy (1, read_fd, extra_headers, headerlen,
+ maildir_to_email(maildir)) != 0) {
+ printf("echo to stdout failed\n");
+ return -2;
+ } else{
+ /* Email sent to STDOUT */
+ return 0;
+ }
+ }
+
/* Format the email file name */
/* we get the whole hostname, even though we only use 32 chars of it */
gethostname(hostname, sizeof(hostname));
pid = (long unsigned) getpid();
tm = (long unsigned) time((time_t *) NULL);
- snprintf(local_file_tmp, sizeof(local_file_tmp), "%stmp/%lu.%lu.%.32s,S=%lu",
- maildir, tm, pid, hostname, (long unsigned) msgsize);
- snprintf(local_file_new, sizeof(local_file_new), "%snew/%lu.%lu.%.32s,S=%lu",
- maildir, tm, pid, hostname, (long unsigned) msgsize);
+ snprintf(local_file_tmp, sizeof(local_file_tmp), "%stmp/%lu.%lu.%.32s",
+ maildir, tm, pid, hostname);
read_quota_from_maildir (maildir, quota, sizeof(quota));
@@ -548,6 +581,9 @@
#endif
close (write_fd) == 0 ) {
+ if (stat(local_file_tmp, &sb) == -1)
+ DeleteMail = 1;
+
if(DeleteMail == 1) {
if (unlink(local_file_tmp) != 0) {
printf("unlink failed %s errno = %d\n", local_file_tmp, errno);
@@ -556,7 +592,29 @@
return(0);
}
+ msgsize = sb.st_size;
+ snprintf(local_file_new, sizeof(local_file_new), "%snew/%lu.%lu.%.32s,S=%lu",
+ maildir, tm, pid, hostname, (long unsigned) msgsize);
+
/* if this succeeds link the file to the new directory */
+#ifdef SPAM_JUNKFOLDER
+ if (MoveMail == 1) {
+ snprintf(dir, sizeof(local_file_new), "%s/.Junk", maildir);
+ if (stat(dir, &mystatbuf) == -1) {
+ /* record the dir where the vdelivermail command was run from */
+ getcwd(calling_dir, sizeof(calling_dir));
+ if (mkdir(dir,VPOPMAIL_DIR_MODE) == -1) { chdir(calling_dir); unlink(local_file_tmp); return(-2); }
+ if (chdir(dir) == -1) { chdir(calling_dir); unlink(local_file_tmp); return(-2); }
+ if (mkdir("cur",VPOPMAIL_DIR_MODE) == -1) { chdir(calling_dir); unlink(local_file_tmp); return(-2); }
+ if (mkdir("new",VPOPMAIL_DIR_MODE) == -1) { chdir(calling_dir); unlink(local_file_tmp); return(-2); }
+ if (mkdir("tmp",VPOPMAIL_DIR_MODE) == -1) { chdir(calling_dir); unlink(local_file_tmp); return(-2); }
+ /* change back to the original dir */
+ chdir(calling_dir);
+ }
+ snprintf(local_file_new, sizeof(local_file_new), "%s/.Junk/new/%lu.%lu.%.32s,S=%lu",
+ maildir, tm, pid, hostname, (long unsigned) msgsize);
+ }
+#endif
if ( link( local_file_tmp, local_file_new ) == 0 ) {
/* file was successfully delivered, remove temp file */
if ( unlink(local_file_tmp) != 0 ) {
@@ -616,6 +674,9 @@
/* rewind the message */
lseek(0,0L,SEEK_SET);
+ /* reinitialize for each dot-qmail line */
+ DeleteMail = 0;
+
/* This is an command */
if ( *address == '|' ) {
@@ -723,7 +784,7 @@
email);
}
- switch (deliver_to_maildir (address, DeliveredTo, 0, message_size)) {
+ switch (deliver_to_maildir (address, DeliveredTo, 0)) {
case -1:
vexiterr (EXIT_OVERQUOTA, "user is over quota");
break;
@@ -898,9 +959,6 @@
*/
void run_command(char *prog)
{
-
-#define MAX_ENV_BUFF 100
-
int child;
char *(args[4]);
int wstat;
@@ -1186,7 +1244,7 @@
maildir_to_email(newdir), date_header());
}
- err = deliver_to_maildir (dir, DeliveredTo, read_fd, sb.st_size);
+ err = deliver_to_maildir (dir, DeliveredTo, read_fd);
close (read_fd);
@@ -1214,19 +1272,22 @@
* * in the email headers for X-Spam-Level: which
* * we put in each spam email
* *
- * * Return 1 if spam
+ * * Return 2 if heavy spam
+ * * Return 1 if light spam
* * Return 0 if not spam
* * Return -1 on error
* */
-int is_spam(char *spambuf)
+int is_spam(char *spambuf, int len)
{
int i,j,k;
int found;
+ int spam = 0;
+ int rowlen;
- for(i=0,j=0;spambuf[i]!=0;++i) {
+ for(i=0,j=0;i<len;++i) {
/* found a line */
- if (spambuf[i]=='\n' || spambuf[i]=='\r' ) {
+ if (spambuf[i]=='\n') {
/* check for blank line, end of headers */
for(k=j,found=0;k<i;++k) {
@@ -1249,13 +1310,19 @@
}
if ( found == 0 ) {
InHeaders=0;
- return(0);
+ return(spam);
}
/* still in the headers check for spam header */
- if ( strncmp(&spambuf[j], "X-Spam-Flag: YES", 16 ) == 0 ) return(1);
+ rowlen = i - j;
+ if ( spam == 0 && rowlen == 16 && strncmp(&spambuf[j], "X-Spam-Flag: YES", 16 ) == 0 )
+ spam = 1;
+#ifdef SPAM_THRESHOLD
+ else if ( rowlen > 14 + SPAM_THRESHOLD && strncmp(&spambuf[j], "X-Spam-Level: ", 14 ) == 0 )
+ return(2);
+#endif
- if (spambuf[i+1]!=0) j=i+1;
+ j=i+1;
}
}
return(0);
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