]> code.citadel.org Git - citadel.git/blobdiff - citadel/modules/smtp/serv_smtpqueue.c
move URL parsing / struct over into libcitadel
[citadel.git] / citadel / modules / smtp / serv_smtpqueue.c
index a05d2f26b592b91a9b752b1465028669cc1dfab4..65cde8f15354eff3c15ed6e2066ab9bce9b4389e 100644 (file)
 
 #include "ctdl_module.h"
 
-#include "smtp_util.h"
 #include "smtpqueue.h"
 #include "event_client.h"
 
-HashList *QItemHandlers = NULL;
 
 citthread_mutex_t ActiveQItemsLock;
-HashList *ActiveQItems = NULL;
+HashList *ActiveQItems  = NULL;
+HashList *QItemHandlers = NULL;
 
-int MsgCount = 0;
-int run_queue_now = 0; /* Set to 1 to ignore SMTP send retry times */
+int MsgCount            = 0;
+int run_queue_now       = 0;   /* Set to 1 to ignore SMTP send retry times */
 
-void smtp_try(OneQueItem *MyQItem, 
-             MailQEntry *MyQEntry, 
-             StrBuf *MsgText, 
-             int KeepMsgText, /* KeepMsgText allows us to use MsgText as ours. */
-             int MsgCount);
+void smtp_try_one_queue_entry(OneQueItem *MyQItem, 
+                             MailQEntry *MyQEntry, 
+                             StrBuf *MsgText, 
+                             int KeepMsgText, /* KeepMsgText allows us to use MsgText as ours. */
+                             int MsgCount, 
+                             ParsedURL *RelayUrls);
 
 
 void smtp_evq_cleanup(void)
@@ -117,10 +117,8 @@ int DecreaseQReference(OneQueItem *MyQItem)
 {
        int IDestructQueItem;
 
-       citthread_mutex_lock(&ActiveQItemsLock);
        MyQItem->ActiveDeliveries--;
        IDestructQueItem = MyQItem->ActiveDeliveries == 0;
-       citthread_mutex_unlock(&ActiveQItemsLock);
        return IDestructQueItem;
 }
 
@@ -139,7 +137,6 @@ void RemoveQItem(OneQueItem *MyQItem)
 }
 
 
-
 void FreeMailQEntry(void *qv)
 {
        MailQEntry *Q = qv;
@@ -152,6 +149,7 @@ void FreeQueItem(OneQueItem **Item)
        DeleteHash(&(*Item)->MailQEntries);
        FreeStrBuf(&(*Item)->EnvelopeFrom);
        FreeStrBuf(&(*Item)->BounceTo);
+       FreeURL(&(*Item)->URL);
        free(*Item);
        Item = NULL;
 }
@@ -260,6 +258,9 @@ 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 +281,7 @@ 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 +313,7 @@ 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 +363,13 @@ 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)
@@ -398,7 +408,7 @@ StrBuf *smtp_load_msg(OneQueItem *MyQItem, int n)
        if ((StrLength(SendMsg) > 0) && 
            ChrPtr(SendMsg)[StrLength(SendMsg) - 1] != '\n') {
                CtdlLogPrintf(CTDL_WARNING, 
-                             "SMTP client[%ld]: Possible problem: message did not "
+                             "SMTP client[%d]: Possible problem: message did not "
                              "correctly terminate. (expecting 0x10, got 0x%02x)\n",
                              MsgCount, //yes uncool, but best choice here... 
                              ChrPtr(SendMsg)[StrLength(SendMsg) - 1] );
@@ -409,6 +419,183 @@ 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) 
+{
+       static int seq = 0;
+
+       struct CtdlMessage *bmsg = NULL;
+       StrBuf *boundary;
+       StrBuf *Msg = NULL; 
+       StrBuf *BounceMB;
+       struct recptypes *valid;
+       
+       HashPos *It;
+       void *vQE;
+       long len;
+       const char *Key;
+
+       int successful_bounce = 0;
+       int num_bounces = 0;
+       int give_up = 0;
+
+       CtdlLogPrintf(CTDL_DEBUG, "smtp_do_bounce() called\n");
+
+       if ( (ev_time() - 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) {
+               FreeStrBuf(&Msg);
+               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['A'] = strdup("Citadel");
+        bmsg->cm_fields['N'] = strdup(config.c_nodename);
+        bmsg->cm_fields['U'] = strdup("Delivery Status Notification (Failure)");
+       bmsg->cm_fields['M'] = 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");
+}
+
+
+
+/*
+{
+
+       if (threadding)
+               n_smarthosts =  get_hosts(char *mxbuf, char *rectype);
+}
+*/
 /*
  * smtp_do_procmsg()
  *
@@ -424,7 +611,11 @@ void smtp_do_procmsg(long msgnum, void *userdata) {
        void *vQE;
        long len;
        const char *Key;
-
+       int nRelays = 0;
+       ParsedURL *RelayUrls = NULL;
+       int HaveBuffers = 0;
+       StrBuf *Msg =NULL;
+       
        CtdlLogPrintf(CTDL_DEBUG, "SMTP Queue: smtp_do_procmsg(%ld)\n", msgnum);
        ///strcpy(envelope_from, "");
 
@@ -489,6 +680,49 @@ void smtp_do_procmsg(long msgnum, void *userdata) {
                return;
        }
 
+       {
+               char mxbuf[SIZ];
+               ParsedURL **Url = &MyQItem->URL;
+               nRelays = get_hosts(mxbuf, "smarthost");
+               if (nRelays > 0) {
+                       StrBuf *All;
+                       StrBuf *One;
+                       const char *Pos = NULL;
+                       All = NewStrBufPlain(mxbuf, -1);
+                       One = NewStrBufPlain(NULL, StrLength(All) + 1);
+                       
+                       while ((Pos != StrBufNOTNULL) && ((Pos == NULL) || !IsEmptyStr(Pos))) {
+                               StrBufExtract_NextToken(One, All, &Pos, '|');
+                               if (!ParseURL(Url, One, 25))
+                                       CtdlLogPrintf(CTDL_DEBUG, "Failed to parse: %s\n", ChrPtr(One));
+                               else 
+                                       Url = &(*Url)->Next;
+                       }
+                       FreeStrBuf(&All);
+                       FreeStrBuf(&One);
+               }
+
+               Url = &MyQItem->FallBackHost;
+               nRelays = get_hosts(mxbuf, "fallbackhost");
+               if (nRelays > 0) {
+                       StrBuf *All;
+                       StrBuf *One;
+                       const char *Pos = NULL;
+                       All = NewStrBufPlain(mxbuf, -1);
+                       One = NewStrBufPlain(NULL, StrLength(All) + 1);
+                       
+                       while ((Pos != StrBufNOTNULL) && ((Pos == NULL) || !IsEmptyStr(Pos))) {
+                               StrBufExtract_NextToken(One, All, &Pos, '|');
+                               if (!ParseURL(Url, One, 25))
+                                       CtdlLogPrintf(CTDL_DEBUG, "Failed to parse: %s\n", ChrPtr(One));
+                               else 
+                                       Url = &(*Url)->Next;
+                       }
+                       FreeStrBuf(&All);
+                       FreeStrBuf(&One);
+               }
+       }
+
        It = GetNewHashPos(MyQItem->MailQEntries, 0);
        while (GetNextHashPos(MyQItem->MailQEntries, It, &len, &Key, &vQE))
        {
@@ -501,17 +735,29 @@ void smtp_do_procmsg(long msgnum, void *userdata) {
        if (MyQItem->ActiveDeliveries > 0)
        {
                int n = MsgCount++;
+               int m = MyQItem->ActiveDeliveries;
                int i = 1;
-               StrBuf *Msg = smtp_load_msg(MyQItem, n);
+               Msg = smtp_load_msg(MyQItem, n);
                It = GetNewHashPos(MyQItem->MailQEntries, 0);
-               while ((i <= MyQItem->ActiveDeliveries) && 
+               while ((i <= m) && 
                       (GetNextHashPos(MyQItem->MailQEntries, It, &len, &Key, &vQE)))
                {
                        MailQEntry *ThisItem = vQE;
                        if (ThisItem->Active == 1) {
+                               int KeepBuffers = (i == m);
                                if (i > 1) n = MsgCount++;
-                               CtdlLogPrintf(CTDL_DEBUG, "SMTP Queue: Trying <%s>\n", ChrPtr(ThisItem->Recipient));
-                               smtp_try(MyQItem, ThisItem, Msg, (i == MyQItem->ActiveDeliveries), n);
+                               CtdlLogPrintf(CTDL_DEBUG, 
+                                             "SMTP Queue: Trying <%s> %d / %d \n", 
+                                             ChrPtr(ThisItem->Recipient), 
+                                             i, 
+                                             m);
+                               smtp_try_one_queue_entry(MyQItem, 
+                                                        ThisItem, 
+                                                        Msg, 
+                                                        KeepBuffers, 
+                                                        n, 
+                                                        RelayUrls);
+                               if (KeepBuffers) HaveBuffers = 1;
                                i++;
                        }
                }
@@ -532,6 +778,10 @@ void smtp_do_procmsg(long msgnum, void *userdata) {
 // TODO: bounce & delete?
 
        }
+       if (!HaveBuffers) {
+               FreeStrBuf (&Msg);
+// TODO : free RelayUrls
+       }
 }
 
 
@@ -655,7 +905,8 @@ 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);