]> code.citadel.org Git - citadel.git/blobdiff - citadel/serv_network.c
* Renamed "dynloader" to "serv_extensions" globally. We don't want people
[citadel.git] / citadel / serv_network.c
index b8412e2d1e6e41a0ce5f3da93e29a5d51ae70e44..c286ecae9a6786f0313ba90e510c39d0b2e07344 100644 (file)
@@ -7,6 +7,13 @@
  * Copyright (C) 2000-2002 by Art Cancro and others.
  * This code is released under the terms of the GNU General Public License.
  *
+ * ** NOTE **   A word on the S_NETCONFIGS semaphore:
+ * This is a fairly high-level type of critical section.  It ensures that no
+ * two threads work on the netconfigs files at the same time.  Since we do
+ * so many things inside these, here are the rules:
+ *  1. begin_critical_section(S_NETCONFIGS) *before* begin_ any others.
+ *  2. Do *not* perform any I/O with the client during these sections.
+ *
  */
 
 /*
  * Don't allow polls during network processing
  */
 
+/*
+ * Duration of time (in seconds) after which pending list subscribe/unsubscribe
+ * requests that have not been confirmed will be deleted.
+ */
+#define EXP    259200  /* three days */
+
 #include "sysdep.h"
 #include <stdlib.h>
 #include <unistd.h>
 #include <stdio.h>
 #include <fcntl.h>
+#include <ctype.h>
 #include <signal.h>
 #include <pwd.h>
 #include <errno.h>
@@ -44,7 +58,7 @@
 #include "citserver.h"
 #include "support.h"
 #include "config.h"
-#include "dynloader.h"
+#include "serv_extensions.h"
 #include "room_ops.h"
 #include "user_ops.h"
 #include "policy.h"
@@ -371,24 +385,25 @@ void cmd_snet(char *argbuf) {
         */
        unlink(filename);
        snprintf(buf, sizeof buf, "/bin/mv %s %s", tempfilename, filename);
+       begin_critical_section(S_NETCONFIGS);
        system(buf);
+       end_critical_section(S_NETCONFIGS);
 }
 
 
-
 /*
  * Spools out one message from the list.
  */
 void network_spool_msg(long msgnum, void *userdata) {
        struct SpoolControl *sc;
-       struct namelist *nptr;
        int err;
        int i;
-       char *instr = NULL;
        char *newpath = NULL;
+       char *instr = NULL;
        size_t instr_len = SIZ;
        struct CtdlMessage *msg = NULL;
        struct CtdlMessage *imsg;
+       struct namelist *nptr;
        struct ser_ret sermsg;
        FILE *fp;
        char filename[SIZ];
@@ -452,6 +467,19 @@ void network_spool_msg(long msgnum, void *userdata) {
                CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM);
                CtdlFreeMessage(imsg);
        }
+
+       /*
+        * Process digest recipients
+        */
+       if ((sc->digestrecps != NULL) && (sc->digestfp != NULL)) {
+               fprintf(sc->digestfp,   " -----------------------------------"
+                                       "------------------------------------"
+                                       "-------\n");
+               CtdlRedirectOutput(sc->digestfp, -1);
+               CtdlOutputMsg(msgnum, MT_RFC822, HEADERS_ALL, 0, 0);
+               CtdlRedirectOutput(NULL, -1);
+               sc->num_msgs_spooled += 1;
+       }
        
        /*
         * Process IGnet push shares
@@ -554,6 +582,103 @@ void network_spool_msg(long msgnum, void *userdata) {
 }
        
 
+/*
+ * Deliver digest messages
+ */
+void network_deliver_digest(struct SpoolControl *sc) {
+       char buf[SIZ];
+       int i;
+       struct CtdlMessage *msg;
+       long msglen;
+       long msgnum;
+       char *instr = NULL;
+       size_t instr_len = SIZ;
+       struct CtdlMessage *imsg;
+       struct namelist *nptr;
+
+       if (sc->num_msgs_spooled < 1) {
+               fclose(sc->digestfp);
+               sc->digestfp = NULL;
+               return;
+       }
+
+       msg = mallok(sizeof(struct CtdlMessage));
+       memset(msg, 0, sizeof(struct CtdlMessage));
+       msg->cm_magic = CTDLMESSAGE_MAGIC;
+       msg->cm_format_type = FMT_RFC822;
+       msg->cm_anon_type = MES_NORMAL;
+
+       sprintf(buf, "%ld", time(NULL));
+       msg->cm_fields['T'] = strdoop(buf);
+       msg->cm_fields['A'] = strdoop(CC->quickroom.QRname);
+       msg->cm_fields['U'] = strdoop(CC->quickroom.QRname);
+       sprintf(buf, "room_%s@%s", CC->quickroom.QRname, config.c_fqdn);
+       for (i=0; i<strlen(buf); ++i) {
+               if (isspace(buf[i])) buf[i]='_';
+               buf[i] = tolower(buf[i]);
+       }
+       msg->cm_fields['F'] = strdoop(buf);
+
+       fseek(sc->digestfp, 0L, SEEK_END);
+       msglen = ftell(sc->digestfp);
+
+       msg->cm_fields['M'] = mallok(msglen + 1);
+       fseek(sc->digestfp, 0L, SEEK_SET);
+       fread(msg->cm_fields['M'], (size_t)msglen, 1, sc->digestfp);
+       msg->cm_fields['M'][msglen] = 0;
+
+       fclose(sc->digestfp);
+       sc->digestfp = NULL;
+
+       msgnum = CtdlSubmitMsg(msg, NULL, SMTP_SPOOLOUT_ROOM);
+       CtdlFreeMessage(msg);
+
+       /* Now generate the delivery instructions */
+
+       /* 
+        * Figure out how big a buffer we need to allocate
+        */
+       for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
+               instr_len = instr_len + strlen(nptr->name);
+       }
+       
+       /*
+        * allocate...
+        */
+       lprintf(9, "Generating delivery instructions\n");
+       instr = mallok(instr_len);
+       if (instr == NULL) {
+               lprintf(1, "Cannot allocate %ld bytes for instr...\n",
+                       (long)instr_len);
+               abort();
+       }
+       snprintf(instr, instr_len,
+               "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
+               "bounceto|postmaster@%s\n" ,
+               SPOOLMIME, msgnum, (long)time(NULL), config.c_fqdn );
+
+       /* Generate delivery instructions for each recipient */
+       for (nptr = sc->digestrecps; nptr != NULL; nptr = nptr->next) {
+               size_t tmp = strlen(instr);
+               snprintf(&instr[tmp], instr_len - tmp,
+                        "remote|%s|0||\n", nptr->name);
+       }
+
+       /*
+        * Generate a message from the instructions
+        */
+       imsg = mallok(sizeof(struct CtdlMessage));
+       memset(imsg, 0, sizeof(struct CtdlMessage));
+       imsg->cm_magic = CTDLMESSAGE_MAGIC;
+       imsg->cm_anon_type = MES_NORMAL;
+       imsg->cm_format_type = FMT_RFC822;
+       imsg->cm_fields['A'] = strdoop("Citadel");
+       imsg->cm_fields['M'] = instr;
+
+       /* Save delivery instructions in spoolout room */
+       CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM);
+       CtdlFreeMessage(imsg);
+}
 
 
 /*
@@ -565,8 +690,11 @@ void network_spoolout_room(char *room_to_spool) {
        char instr[SIZ];
        FILE *fp;
        struct SpoolControl sc;
-       /* struct namelist *digestrecps = NULL; */
        struct namelist *nptr;
+       size_t miscsize = 0;
+       size_t linesize = 0;
+       int skipthisline = 0;
+       int i;
 
        lprintf(7, "Spooling <%s>\n", room_to_spool);
        if (getroom(&CC->quickroom, room_to_spool) != 0) {
@@ -577,10 +705,14 @@ void network_spoolout_room(char *room_to_spool) {
        memset(&sc, 0, sizeof(struct SpoolControl));
        assoc_file_name(filename, sizeof filename, &CC->quickroom, "netconfigs");
 
+       begin_critical_section(S_NETCONFIGS);
+       end_critical_section(S_NETCONFIGS);
+
        fp = fopen(filename, "r");
        if (fp == NULL) {
                lprintf(7, "Outbound batch processing skipped for <%s>\n",
                        CC->quickroom.QRname);
+               end_critical_section(S_NETCONFIGS);
                return;
        }
 
@@ -601,6 +733,13 @@ void network_spoolout_room(char *room_to_spool) {
                        extract(nptr->name, buf, 1);
                        sc.listrecps = nptr;
                }
+               else if (!strcasecmp(instr, "digestrecp")) {
+                       nptr = (struct namelist *)
+                               mallok(sizeof(struct namelist));
+                       nptr->next = sc.digestrecps;
+                       extract(nptr->name, buf, 1);
+                       sc.digestrecps = nptr;
+               }
                else if (!strcasecmp(instr, "ignet_push_share")) {
                        nptr = (struct namelist *)
                                mallok(sizeof(struct namelist));
@@ -608,16 +747,64 @@ void network_spoolout_room(char *room_to_spool) {
                        extract(nptr->name, buf, 1);
                        sc.ignet_push_shares = nptr;
                }
+               else {
+                       /* Preserve 'other' lines ... *unless* they happen to
+                        * be subscribe/unsubscribe pendings with expired
+                        * timestamps.
+                        */
+                       skipthisline = 0;
+                       if (!strncasecmp(buf, "subpending|", 11)) {
+                               if (time(NULL) - extract_long(buf, 4) > EXP) {
+                                       skipthisline = 1;
+                               }
+                       }
+                       if (!strncasecmp(buf, "unsubpending|", 13)) {
+                               if (time(NULL) - extract_long(buf, 3) > EXP) {
+                                       skipthisline = 1;
+                               }
+                       }
+
+                       if (skipthisline == 0) {
+                               linesize = strlen(buf);
+                               sc.misc = realloc(sc.misc,
+                                       (miscsize + linesize + 2) );
+                               sprintf(&sc.misc[miscsize], "%s\n", buf);
+                               miscsize = miscsize + linesize + 1;
+                       }
+               }
 
 
        }
        fclose(fp);
 
+       /* If there are digest recipients, we have to build a digest */
+       if (sc.digestrecps != NULL) {
+               sc.digestfp = tmpfile();
+               fprintf(sc.digestfp, "Content-type: text/plain\n\n");
+       }
 
        /* Do something useful */
        CtdlForEachMessage(MSGS_GT, sc.lastsent, NULL, NULL,
                network_spool_msg, &sc);
 
+       /* If we wrote a digest, deliver it and then close it */
+       snprintf(buf, sizeof buf, "room_%s@%s",
+               CC->quickroom.QRname, config.c_fqdn);
+       for (i=0; i<strlen(buf); ++i) {
+               buf[i] = tolower(buf[i]);
+               if (isspace(buf[i])) buf[i] = '_';
+       }
+       if (sc.digestfp != NULL) {
+               fprintf(sc.digestfp,    " -----------------------------------"
+                                       "------------------------------------"
+                                       "-------\n"
+                                       "You are subscribed to the '%s' "
+                                       "list.\n"
+                                       "To post to the list: %s\n",
+                                       CC->quickroom.QRname, buf
+               );
+               network_deliver_digest(&sc);    /* deliver and close */
+       }
 
        /* Now rewrite the config file */
        fp = fopen(filename, "w");
@@ -637,6 +824,13 @@ void network_spoolout_room(char *room_to_spool) {
                        phree(sc.listrecps);
                        sc.listrecps = nptr;
                }
+               /* Do the same for digestrecps */
+               while (sc.digestrecps != NULL) {
+                       fprintf(fp, "digestrecp|%s\n", sc.digestrecps->name);
+                       nptr = sc.digestrecps->next;
+                       phree(sc.digestrecps);
+                       sc.digestrecps = nptr;
+               }
                while (sc.ignet_push_shares != NULL) {
                        fprintf(fp, "ignet_push_share|%s\n",
                                sc.ignet_push_shares->name);
@@ -644,9 +838,14 @@ void network_spoolout_room(char *room_to_spool) {
                        phree(sc.ignet_push_shares);
                        sc.ignet_push_shares = nptr;
                }
+               if (sc.misc != NULL) {
+                       fwrite(sc.misc, strlen(sc.misc), 1, fp);
+               }
+               phree(sc.misc);
 
                fclose(fp);
        }
+       end_critical_section(S_NETCONFIGS);
 
        lprintf(5, "Outbound batch processing finished for <%s>\n",
                CC->quickroom.QRname);
@@ -783,13 +982,13 @@ void network_bounce(struct CtdlMessage *msg, char *reason) {
                valid = NULL;
        }
        if ( (valid == NULL) || (!strcasecmp(recipient, bouncesource)) ) {
-               strcpy(force_room, AIDEROOM);
+               strcpy(force_room, config.c_aideroom);
        }
        else {
                strcpy(force_room, "");
        }
        if ( (valid == NULL) && (strlen(force_room) == 0) ) {
-               strcpy(force_room, AIDEROOM);
+               strcpy(force_room, config.c_aideroom);
        }
        CtdlSubmitMsg(msg, valid, force_room);
 
@@ -1374,7 +1573,7 @@ void cmd_netp(char *cmdbuf)
 /*
  * Module entry point
  */
-char *Dynamic_Module_Init(void)
+char *serv_network_init(void)
 {
        CtdlRegisterProtoHook(cmd_gnet, "GNET", "Get network config");
        CtdlRegisterProtoHook(cmd_snet, "SNET", "Set network config");