The battle against bit rot continues!
[citadel.git] / citadel / internet_addressing.c
index 7730e8794e3039c99b051120959f7f8adb855d0f..33d70451a6f36406c36056d8b91954ce0e728f4e 100644 (file)
@@ -2,7 +2,7 @@
  * This file contains functions which handle the mapping of Internet addresses
  * to users on the Citadel system.
  *
- * Copyright (c) 1987-2017 by the citadel.org team
+ * Copyright (c) 1987-2018 by the citadel.org team
  *
  * This program is open source software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3.
@@ -13,7 +13,6 @@
  * GNU General Public License for more details.
  */
 
-
 #include "sysdep.h"
 #include <stdlib.h>
 #include <unistd.h>
@@ -94,10 +93,10 @@ void utf8ify_rfc822_string(char *buf) {
        int illegal_non_rfc2047_encoding = 0;
 
        /* Sometimes, badly formed messages contain strings which were simply
-        *  written out directly in some foreign character set instead of
-        *  using RFC2047 encoding.  This is illegal but we will attempt to
-        *  handle it anyway by converting from a user-specified default
-        *  charset to UTF-8 if we see any nonprintable characters.
+        * written out directly in some foreign character set instead of
+        * using RFC2047 encoding.  This is illegal but we will attempt to
+        * handle it anyway by converting from a user-specified default
+        * charset to UTF-8 if we see any nonprintable characters.
         */
        len = strlen(buf);
        for (i=0; i<len; ++i) {
@@ -404,15 +403,10 @@ void remove_any_whitespace_to_the_left_or_right_of_at_symbol(char *name)
  */
 int alias(char *name)
 {                              /* process alias and routing info for mail */
-       FILE *fp;
-       int a, i;
-       char aaa[SIZ], bbb[SIZ];
-       char *ignetcfg = NULL;
-       char *ignetmap = NULL;
+       int a;
+       char aaa[SIZ];
        int at = 0;
        char node[64];
-       char testnode[64];
-       char buf[SIZ];
 
        char original_name[256];
        safestrncpy(original_name, name, sizeof original_name);
@@ -421,32 +415,6 @@ int alias(char *name)
        remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
        stripallbut(name, '<', '>');
 
-       fp = fopen(file_mail_aliases, "r");             // when are we going to get rid of this?
-       if (fp == NULL) {
-               fp = fopen("/dev/null", "r");
-       }
-       if (fp == NULL) {
-               return (MES_ERROR);
-       }
-       strcpy(aaa, "");
-       strcpy(bbb, "");
-       while (fgets(aaa, sizeof aaa, fp) != NULL) {
-               while (isspace(name[0]))
-                       strcpy(name, &name[1]);
-               aaa[strlen(aaa) - 1] = 0;
-               strcpy(bbb, "");
-               for (a = 0; aaa[a] != '\0'; ++a) {
-                       if (aaa[a] == ',') {
-                               strcpy(bbb, &aaa[a + 1]);
-                               aaa[a] = 0;
-                               break;
-                       }
-               }
-               if (!strcasecmp(name, aaa))
-                       strcpy(name, bbb);
-       }
-       fclose(fp);
-
        /* Hit the email address directory */
        if (CtdlDirectoryLookup(aaa, name, sizeof aaa) == 0) {
                strcpy(name, aaa);
@@ -483,34 +451,6 @@ int alias(char *name)
                return(MES_INTERNET);
        }
 
-       /* Otherwise we look in the IGnet maps for a valid Citadel node.
-        * Try directly-connected nodes first...
-        */
-       ignetcfg = CtdlGetSysConfig(IGNETCFG);
-       for (i=0; i<num_tokens(ignetcfg, '\n'); ++i) {
-               extract_token(buf, ignetcfg, i, '\n', sizeof buf);
-               extract_token(testnode, buf, 0, '|', sizeof testnode);
-               if (!strcasecmp(node, testnode)) {
-                       free(ignetcfg);
-                       return(MES_IGNET);
-               }
-       }
-       free(ignetcfg);
-
-       /*
-        * Then try nodes that are two or more hops away.
-        */
-       ignetmap = CtdlGetSysConfig(IGNETMAP);
-       for (i=0; i<num_tokens(ignetmap, '\n'); ++i) {
-               extract_token(buf, ignetmap, i, '\n', sizeof buf);
-               extract_token(testnode, buf, 0, '|', sizeof testnode);
-               if (!strcasecmp(node, testnode)) {
-                       free(ignetmap);
-                       return(MES_IGNET);
-               }
-       }
-       free(ignetmap);
-
        /* If we get to this point it's an invalid node name */
        return (MES_ERROR);
 }
@@ -568,7 +508,6 @@ recptypes *validate_recipients(const char *supplied_recipients, const char *Remo
        ret->errormsg = malloc(len);
        ret->recp_local = malloc(len);
        ret->recp_internet = malloc(len);
-       ret->recp_ignet = malloc(len);
        ret->recp_room = malloc(len);
        ret->display_recp = malloc(len);
        ret->recp_orgroom = malloc(len);
@@ -577,7 +516,6 @@ recptypes *validate_recipients(const char *supplied_recipients, const char *Remo
        ret->errormsg[0] = 0;
        ret->recp_local[0] = 0;
        ret->recp_internet[0] = 0;
-       ret->recp_ignet[0] = 0;
        ret->recp_room[0] = 0;
        ret->recp_orgroom[0] = 0;
        ret->display_recp[0] = 0;
@@ -719,13 +657,6 @@ recptypes *validate_recipients(const char *supplied_recipients, const char *Remo
                                strcat(ret->recp_internet, this_recp);
                        }
                        break;
-               case MES_IGNET:
-                       ++ret->num_ignet;
-                       if (!IsEmptyStr(ret->recp_ignet)) {
-                               strcat(ret->recp_ignet, "|");
-                       }
-                       strcat(ret->recp_ignet, this_recp);
-                       break;
                case MES_ERROR:
                        ++ret->num_error;
                        invalid = 1;
@@ -759,14 +690,14 @@ recptypes *validate_recipients(const char *supplied_recipients, const char *Remo
        }
        free(org_recp);
 
-       if ((ret->num_local + ret->num_internet + ret->num_ignet +
-            ret->num_room + ret->num_error) == 0) {
+       if ( (ret->num_local + ret->num_internet + ret->num_room + ret->num_error) == 0)
+       {
                ret->num_error = (-1);
                strcpy(ret->errormsg, "No recipients specified.");
        }
 
-       syslog(LOG_DEBUG, "internet_addressing: validate_recipients() = %d local, %d room, %d SMTP, %d IGnet, %d error",
-               ret->num_local, ret->num_room, ret->num_internet, ret->num_ignet, ret->num_error
+       syslog(LOG_DEBUG, "internet_addressing: validate_recipients() = %d local, %d room, %d SMTP, %d error",
+               ret->num_local, ret->num_room, ret->num_internet, ret->num_error
        );
 
        free(recipients);
@@ -791,7 +722,6 @@ void free_recipients(recptypes *valid) {
        if (valid->errormsg != NULL)            free(valid->errormsg);
        if (valid->recp_local != NULL)          free(valid->recp_local);
        if (valid->recp_internet != NULL)       free(valid->recp_internet);
-       if (valid->recp_ignet != NULL)          free(valid->recp_ignet);
        if (valid->recp_room != NULL)           free(valid->recp_room);
        if (valid->recp_orgroom != NULL)        free(valid->recp_orgroom);
        if (valid->display_recp != NULL)        free(valid->display_recp);
@@ -1562,7 +1492,9 @@ int CtdlDirectoryLookup(char *target, char *internet_addr, size_t targbuflen) {
        char key[SIZ];
 
        /* Dump it in there unchanged, just for kicks */
-       safestrncpy(target, internet_addr, targbuflen);
+       if (target != NULL) {
+               safestrncpy(target, internet_addr, targbuflen);
+       }
 
        /* Only do lookups for addresses with hostnames in them */
        if (num_tokens(internet_addr, '@') != 2) return(-1);
@@ -1573,7 +1505,9 @@ int CtdlDirectoryLookup(char *target, char *internet_addr, size_t targbuflen) {
        directory_key(key, internet_addr);
        cdbrec = cdb_fetch(CDB_DIRECTORY, key, strlen(key) );
        if (cdbrec != NULL) {
-               safestrncpy(target, cdbrec->ptr, targbuflen);
+               if (target != NULL) {
+                       safestrncpy(target, cdbrec->ptr, targbuflen);
+               }
                cdb_free(cdbrec);
                return(0);
        }
@@ -1718,3 +1652,73 @@ void CtdlRebuildDirectoryIndex(void) {
        ForEachUser(CtdlRebuildDirectoryIndex_backend, NULL);
        CtdlRebuildDirectoryIndex_backend(NULL, NULL);
 }
+
+
+/*
+ * Configure Internet email addresses for a user account, updating the Directory Index in the process
+ */
+void CtdlSetEmailAddressesForUser(char *requested_user, char *new_emailaddrs)
+{
+       struct ctdluser usbuf;
+       int i;
+       char buf[SIZ];
+
+       if (CtdlGetUserLock(&usbuf, requested_user) != 0) {     // We are relying on the fact that the DirectoryIndex functions don't lock.
+               return;                                         // Silently fail here if we can't acquire a lock on the user record.
+       }
+
+       syslog(LOG_DEBUG, "internet_addressing: setting email addresses for <%s> to <%s>", usbuf.fullname, new_emailaddrs);
+
+       /* Delete all of the existing directory index records for the user (easier this way) */
+       for (i=0; i<num_tokens(usbuf.emailaddrs, '|'); ++i) {
+               extract_token(buf, usbuf.emailaddrs, i, '|', sizeof buf);
+               CtdlDirectoryDelUser(buf, requested_user);
+       }
+
+       strcpy(usbuf.emailaddrs, new_emailaddrs);               // make it official.
+
+       /* Index all of the new email addresses (they've already been sanitized) */
+       for (i=0; i<num_tokens(usbuf.emailaddrs, '|'); ++i) {
+               extract_token(buf, usbuf.emailaddrs, i, '|', sizeof buf);
+               CtdlDirectoryAddUser(buf, requested_user);
+       }
+
+       CtdlPutUserLock(&usbuf);
+}
+
+
+/*
+ * Auto-generate an Internet email address for a user account
+ */
+void AutoGenerateEmailAddressForUser(struct ctdluser *user)
+{
+       char synthetic_email_addr[1024];
+       int i, j;
+       int u = 0;
+
+       for (i=0; u==0; ++i) {
+               if (i == 0) {
+                       // first try just converting the user name to lowercase and replacing spaces with underscores
+                       snprintf(synthetic_email_addr, sizeof synthetic_email_addr, "%s@%s", user->fullname, CtdlGetConfigStr("c_fqdn"));
+                       for (j=0; ((synthetic_email_addr[j] != '\0')&&(synthetic_email_addr[j] != '@')); j++) {
+                               synthetic_email_addr[j] = tolower(synthetic_email_addr[j]);
+                               if (!isalnum(synthetic_email_addr[j])) {
+                                       synthetic_email_addr[j] = '_';
+                               }
+                       }
+               }
+               else if (i == 1) {
+                       // then try 'ctdl' followed by the user number
+                       snprintf(synthetic_email_addr, sizeof synthetic_email_addr, "ctdl%08lx@%s", user->usernum, CtdlGetConfigStr("c_fqdn"));
+               }
+               else if (i > 1) {
+                       // oof.  just keep trying other numbers until we find one
+                       snprintf(synthetic_email_addr, sizeof synthetic_email_addr, "ctdl%08x@%s", i, CtdlGetConfigStr("c_fqdn"));
+               }
+               u = CtdlDirectoryLookup(NULL, synthetic_email_addr, 0);
+       }
+
+       CtdlSetEmailAddressesForUser(user->fullname, synthetic_email_addr);
+       strncpy(CC->user.emailaddrs, synthetic_email_addr, sizeof(user->emailaddrs));
+       syslog(LOG_DEBUG, "user_ops: auto-generated email address <%s> for <%s>", synthetic_email_addr, user->fullname);
+}