Libev / libc-ares Migration
[citadel.git] / citadel / modules / smtp / serv_smtpqueue.c
index a05d2f26b592b91a9b752b1465028669cc1dfab4..4eccf60efb9d88f906289e813447a849ded655d6 100644 (file)
@@ -85,7 +85,7 @@
 
 #include "ctdl_module.h"
 
-#include "smtp_util.h"
+///#include "smtp_util.h"
 #include "smtpqueue.h"
 #include "event_client.h"
 
@@ -260,6 +260,9 @@ StrBuf *SerializeQueueItem(OneQueItem *MyQItem)
        StrBufAppendBufPlain(QMessage, HKEY("\nmsgid|"), 0);
        StrBufAppendPrintf(QMessage, "%ld", MyQItem->MessageID);
 
+       StrBufAppendBufPlain(QMessage, HKEY("\nsubmitted|"), 0);
+       StrBufAppendPrintf(QMessage, "%ld", MyQItem->Submitted);
+
        if (StrLength(MyQItem->BounceTo) > 0) {
                StrBufAppendBufPlain(QMessage, HKEY("\nbounceto|"), 0);
                StrBufAppendBuf(QMessage, MyQItem->BounceTo, 0);
@@ -280,6 +283,7 @@ StrBuf *SerializeQueueItem(OneQueItem *MyQItem)
                        continue; /* skip already sent ones from the spoolfile. */
 
                for (i=0; i < ThisItem->nAttempts; i++) {
+                       /* TODO: most probably there is just one retry/attempted per message! */
                        StrBufAppendBufPlain(QMessage, HKEY("\nretry|"), 0);
                        StrBufAppendPrintf(QMessage, "%ld", 
                                           ThisItem->Attempts[i].retry);
@@ -311,6 +315,7 @@ void NewMailQEntry(OneQueItem *Item)
 
        if (Item->MailQEntries == NULL)
                Item->MailQEntries = NewHash(1, Flathash);
+       Item->Current->StatusMessage = NewStrBuf();
        Item->Current->n = GetCount(Item->MailQEntries);
        Put(Item->MailQEntries, IKEY(Item->Current->n), Item->Current, FreeMailQEntry);
 }
@@ -360,6 +365,13 @@ void QItem_Handle_retry(OneQueItem *Item, StrBuf *Line, const char **Pos)
        Item->Current->Attempts[Item->Current->nAttempts].retry = StrBufExtractNext_int(Line, Pos, '|');
 }
 
+
+void QItem_Handle_Submitted(OneQueItem *Item, StrBuf *Line, const char **Pos)
+{
+       Item->Submitted = atol(*Pos);
+
+}
+
 void QItem_Handle_Attempted(OneQueItem *Item, StrBuf *Line, const char **Pos)
 {
        if (Item->Current == NULL)
@@ -409,6 +421,167 @@ StrBuf *smtp_load_msg(OneQueItem *MyQItem, int n)
 
 
 
+/*
+ * smtp_do_bounce() is caled by smtp_do_procmsg() to scan a set of delivery
+ * instructions for "5" codes (permanent fatal errors) and produce/deliver
+ * a "bounce" message (delivery status notification).
+ */
+void smtpq_do_bounce(OneQueItem *MyQItem, StrBuf *OMsgTxt) 
+{
+       StrBuf *boundary, *Msg = NULL; 
+       int num_bounces = 0;
+       struct CtdlMessage *bmsg = NULL;
+       int give_up = 0;
+       struct recptypes *valid;
+       int successful_bounce = 0;
+       static int seq = 0;
+       StrBuf *BounceMB;
+       HashPos  *It;
+       void *vQE;
+       long len;
+       const char *Key;
+
+       CtdlLogPrintf(CTDL_DEBUG, "smtp_do_bounce() called\n");
+       
+       if ( (time(NULL) - MyQItem->Submitted) > SMTP_GIVE_UP ) {
+               give_up = 1;/// TODO: replace time by libevq timer get
+       }
+
+       /*
+        * Now go through the instructions checking for stuff.
+        */
+       It = GetNewHashPos(MyQItem->MailQEntries, 0);
+       while (GetNextHashPos(MyQItem->MailQEntries, It, &len, &Key, &vQE))
+       {
+               MailQEntry *ThisItem = vQE;
+               if ((ThisItem->Status == 5) || /* failed now? */
+                   ((give_up == 1) && (ThisItem->Status != 2))) /* giving up after failed attempts... */
+               {
+                       if (num_bounces == 0)
+                               Msg = NewStrBufPlain(NULL, 1024);
+                       ++num_bounces;
+       
+                       StrBufAppendBuf(Msg, ThisItem->Recipient, 0);
+                       StrBufAppendBufPlain(Msg, HKEY(": "), 0);
+                       StrBufAppendBuf(Msg, ThisItem->StatusMessage, 0);
+                       StrBufAppendBufPlain(Msg, HKEY("\r\n"), 0);
+               }
+       }
+       DeleteHashPos(&It);
+
+       /* Deliver the bounce if there's anything worth mentioning */
+       CtdlLogPrintf(CTDL_DEBUG, "num_bounces = %d\n", num_bounces);
+
+       if (num_bounces == 0)
+               return;
+
+       boundary = NewStrBufPlain(HKEY("=_Citadel_Multipart_"));
+       StrBufAppendPrintf(boundary, "%s_%04x%04x", config.c_fqdn, getpid(), ++seq);
+
+       /* Start building our bounce message; go shopping for memory first. */
+       BounceMB = NewStrBufPlain(NULL, 
+                                 1024 + /* mime stuff.... */
+                                 StrLength(Msg) +  /* the bounce information... */
+                                 StrLength(OMsgTxt)); /* the original message */
+       if (BounceMB == NULL) {
+               FreeStrBuf(&boundary);
+               CtdlLogPrintf(CTDL_ERR, "Failed to alloc() bounce message.\n");
+
+               return;
+       }
+
+       bmsg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
+       if (bmsg == NULL) {
+               FreeStrBuf(&boundary);
+               FreeStrBuf(&BounceMB);
+               CtdlLogPrintf(CTDL_ERR, "Failed to alloc() bounce message.\n");
+
+               return;
+       }
+       memset(bmsg, 0, sizeof(struct CtdlMessage));
+
+
+       StrBufAppendBufPlain(BounceMB, HKEY("Content-type: multipart/mixed; boundary=\""), 0);
+       StrBufAppendBuf(BounceMB, boundary, 0);
+        StrBufAppendBufPlain(BounceMB, HKEY("\"\r\n"), 0);
+       StrBufAppendBufPlain(BounceMB, HKEY("MIME-Version: 1.0\r\n"), 0);
+       StrBufAppendBufPlain(BounceMB, HKEY("X-Mailer: " CITADEL "\r\n"), 0);
+        StrBufAppendBufPlain(BounceMB, HKEY("\r\nThis is a multipart message in MIME format.\r\n\r\n"), 0);
+        StrBufAppendBufPlain(BounceMB, HKEY("--"), 0);
+        StrBufAppendBuf(BounceMB, boundary, 0);
+       StrBufAppendBufPlain(BounceMB, HKEY("\r\n"), 0);
+        StrBufAppendBufPlain(BounceMB, HKEY("Content-type: text/plain\r\n\r\n"), 0);
+
+       if (give_up) 
+               StrBufAppendBufPlain(
+                       BounceMB, 
+                       HKEY(
+                               "A message you sent could not be delivered to some or all of its recipients\n"
+                               "due to prolonged unavailability of its destination(s).\n"
+                               "Giving up on the following addresses:\n\n"
+                               ), 0);
+       else 
+               StrBufAppendBufPlain(
+                       BounceMB, 
+                       HKEY(
+                               "A message you sent could not be delivered to some or all of its recipients.\n"
+                               "The following addresses were undeliverable:\n\n"
+                               ), 0);
+
+       StrBufAppendBuf(BounceMB, Msg, 0);
+       FreeStrBuf(&Msg);
+
+       /* Attach the original message */
+       StrBufAppendBufPlain(BounceMB, HKEY("--"), 0);
+       StrBufAppendBuf(BounceMB, boundary, 0);
+       StrBufAppendBufPlain(BounceMB, HKEY("\r\n"), 0);
+       StrBufAppendBufPlain(BounceMB, HKEY("Content-type: message/rfc822\r\n"), 0);
+       StrBufAppendBufPlain(BounceMB, HKEY("Content-Transfer-Encoding: 7bit\r\n"), 0);
+       StrBufAppendBufPlain(BounceMB, HKEY("Content-Disposition: inline\r\n"), 0);
+       StrBufAppendBufPlain(BounceMB, HKEY("\r\n"), 0);
+       StrBufAppendBuf(BounceMB, OMsgTxt, 0);
+
+       /* Close the multipart MIME scope */
+        StrBufAppendBufPlain(BounceMB, HKEY("--"), 0);
+       StrBufAppendBuf(BounceMB, boundary, 0);
+       StrBufAppendBufPlain(BounceMB, HKEY("--\r\n"), 0);
+
+
+
+        bmsg->cm_magic = CTDLMESSAGE_MAGIC;
+        bmsg->cm_anon_type = MES_NORMAL;
+        bmsg->cm_format_type = FMT_RFC822;
+
+        bmsg->cm_fields['O'] = strdup(MAILROOM);
+        bmsg->cm_fields['N'] = strdup(config.c_nodename);
+        bmsg->cm_fields['U'] = strdup("Delivery Status Notification (Failure)");
+       bmsg->cm_fields['A'] = SmashStrBuf(&BounceMB);
+
+       /* First try the user who sent the message */
+       if (StrLength(MyQItem->BounceTo) == 0) 
+               CtdlLogPrintf(CTDL_ERR, "No bounce address specified\n");
+       else
+               CtdlLogPrintf(CTDL_DEBUG, "bounce to user? <%s>\n", ChrPtr(MyQItem->BounceTo));
+
+       /* Can we deliver the bounce to the original sender? */
+       valid = validate_recipients(ChrPtr(MyQItem->BounceTo), NULL, 0);
+       if ((valid != NULL) && (valid->num_error == 0)) {
+               CtdlSubmitMsg(bmsg, valid, "", QP_EADDR);
+               successful_bounce = 1;
+       }
+
+       /* If not, post it in the Aide> room */
+       if (successful_bounce == 0) {
+               CtdlSubmitMsg(bmsg, NULL, config.c_aideroom, QP_EADDR);
+       }
+
+       /* Free up the memory we used */
+       free_recipients(valid);
+       FreeStrBuf(&boundary);
+       CtdlFreeMessage(bmsg);
+       CtdlLogPrintf(CTDL_DEBUG, "Done processing bounces\n");
+}
+
 /*
  * smtp_do_procmsg()
  *
@@ -655,7 +828,8 @@ CTDL_MODULE_INIT(smtp_queu)
                Put(QItemHandlers, HKEY("attempted"), QItem_Handle_Attempted, reference_free_handler);
                Put(QItemHandlers, HKEY("remote"), QItem_Handle_Recipient, reference_free_handler);
                Put(QItemHandlers, HKEY("bounceto"), QItem_Handle_BounceTo, reference_free_handler);
-///submitted /TODO: flush qitemhandlers on exit
+               Put(QItemHandlers, HKEY("submitted"), QItem_Handle_Submitted, reference_free_handler);
+////TODO: flush qitemhandlers on exit
                smtp_init_spoolout();
 
                CtdlRegisterCleanupHook(smtp_evq_cleanup);