Some systems need an explicit -ldl in order to support EXPAND_DLFUNC
[exim.git] / src / src / sieve.c
index 4301d1ab7d6520e6dab7b6b085af619c3bd2b37e..2a680e17525293d42fe0dda25f39248f5923a485 100644 (file)
@@ -1,10 +1,10 @@
-/* $Cambridge: exim/src/src/sieve.c,v 1.1 2004/10/07 10:39:01 ph10 Exp $ */
+/* $Cambridge: exim/src/src/sieve.c,v 1.11 2005/05/03 10:02:27 ph10 Exp $ */
 
 /*************************************************
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
-/* Copyright (c) Michael Haardt 2003,2004 */
+/* Copyright (c) Michael Haardt 2003-2005 */
 /* See the file NOTICE for conditions of use and distribution. */
 
 /* This code was contributed by Michael Haardt. */
@@ -32,8 +32,7 @@
 /* The code is currently broken.                                    */
 #undef SUBADDRESS
 
-/* Define this for development of the vacation Sieve extension.     */
-/* The code is not yet finished.                                    */
+/* Define this for the vacation Sieve extension.                    */
 #define VACATION
 
 /* Must be >= 1                                                     */
@@ -62,6 +61,8 @@ struct Sieve
   int vacation_ran;
 #endif
   uschar *vacation_directory;
+  const uschar *subaddress;
+  const uschar *useraddress;
   int require_copy;
   int require_iascii_numeric;
   };
@@ -631,7 +632,7 @@ static int compare(struct Sieve *filter, const struct String *needle, const stru
 {
 int r=0;
 
-if ((filter_test != NULL && debug_selector != 0) ||
+if ((filter_test != FTEST_NONE && debug_selector != 0) ||
   (debug_selector & D_filter) != 0)
   {
   debug_printf("String comparison (match ");
@@ -728,7 +729,7 @@ switch (mt)
     break;
     }
   }
-if ((filter_test != NULL && debug_selector != 0) ||
+if ((filter_test != FTEST_NONE && debug_selector != 0) ||
   (debug_selector & D_filter) != 0)
   debug_printf("  Result %s\n",r?"true":"false");
 return r;
@@ -852,7 +853,7 @@ for (new_addr=*generated; new_addr; new_addr=new_addr->next)
   {
   if (Ustrcmp(new_addr->address,addr)==0 && (file ? testflag(new_addr, af_pfr|af_file) : 1))
     {
-    if ((filter_test != NULL && debug_selector != 0) || (debug_selector & D_filter) != 0)
+    if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
       {
       debug_printf("Repeated %s `%s' ignored.\n",file ? "fileinto" : "redirect", addr);
       }
@@ -860,7 +861,7 @@ for (new_addr=*generated; new_addr; new_addr=new_addr->next)
     }
   }
 
-if ((filter_test != NULL && debug_selector != 0) || (debug_selector & D_filter) != 0)
+if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
   {
   debug_printf("%s `%s'\n",file ? "fileinto" : "redirect", addr);
   }
@@ -1712,10 +1713,8 @@ if (parse_identifier(filter,CUS "address"))
           case ADDRPART_LOCALPART: part=extracted_addr; part[domain-1]='\0'; break;
           case ADDRPART_DOMAIN: part=extracted_addr+domain; break;
 #ifdef SUBADDRESS
-          case ADDRPART_DETAIL:
-          part=NULL;
+          case ADDRPART_DETAIL: part=NULL; break;
 #endif
-          break;
           }
 
         *end_addr = saveend;
@@ -2020,9 +2019,7 @@ else if (parse_identifier(filter,CUS "envelope"))
         case ADDRPART_LOCALPART: envelopeExpr=CUS "${local_part:$sender_address}"; break;
         case ADDRPART_DOMAIN: envelopeExpr=CUS "${domain:$sender_address}"; break;
 #ifdef SUBADDRESS
-        case ADDRPART_DETAIL:
-        envelopeExpr=CUS 0;
-        break;
+        case ADDRPART_DETAIL: envelopeExpr=CUS 0; break;
 #endif
         }
       }
@@ -2032,8 +2029,8 @@ else if (parse_identifier(filter,CUS "envelope"))
         {
         case ADDRPART_ALL: envelopeExpr=CUS "$local_part_prefix$local_part$local_part_suffix@$domain"; break;
 #ifdef SUBADDRESS
-        case ADDRPART_USER: envelopeExpr=CUS "$local_part_prefix$local_part"; break;
-        case ADDRPART_DETAIL: envelopeExpr=CUS "$local_part_suffix"; break;
+        case ADDRPART_USER: envelopeExpr=filter->useraddress; break;
+        case ADDRPART_DETAIL: envelopeExpr=filter->subaddress; break;
 #endif
         case ADDRPART_LOCALPART: envelopeExpr=CUS "$local_part_prefix$local_part$local_part_suffix"; break;
         case ADDRPART_DOMAIN: envelopeExpr=CUS "$domain"; break;
@@ -2057,7 +2054,7 @@ else if (parse_identifier(filter,CUS "envelope"))
 
         envelopeStr.character=envelope;
         envelopeStr.length=Ustrlen(envelope);
-        *cond=compare(filter,&envelopeStr,k,comparator,matchType);
+        *cond=compare(filter,k,&envelopeStr,comparator,matchType);
         if (*cond==-1) return -1;
         if (*cond) break;
         }
@@ -2102,7 +2099,7 @@ if (*filter->pc=='{')
     }
   else
     {
-    filter->errmsg=CUS "missing closing brace";
+    filter->errmsg=CUS "expecting command or closing brace";
     return -1;
     }
   }
@@ -2367,17 +2364,21 @@ while (*filter->pc)
     /*
     vacation-command =  "vacation" { vacation-options } <reason: string> ";"
     vacation-options =  [":days" number]
-                        [":addresses" string-list]
                         [":subject" string]
+                        [":from" string]
+                        [":addresses" string-list]
                         [":mime"]
+                        [":handle" string]
     */
 
     int m;
     unsigned long days;
-    struct String *addresses=(struct String*)0;
     struct String subject;
+    struct String from;
+    struct String *addresses;
     int reason_is_mime;
     string_item *aliases;
+    struct String handle;
     struct String reason;
 
     if (!filter->require_vacation)
@@ -2397,8 +2398,13 @@ while (*filter->pc)
     days=VACATION_MIN_DAYS>7 ? VACATION_MIN_DAYS : 7;
     subject.character=(uschar*)0;
     subject.length=-1;
+    from.character=(uschar*)0;
+    from.length=-1;
+    addresses=(struct String*)0;
     aliases=NULL;
     reason_is_mime=0;
+    handle.character=(uschar*)0;
+    handle.length=-1;
     for (;;)
       {
       if (parse_white(filter)==-1) return -1;
@@ -2409,6 +2415,43 @@ while (*filter->pc)
         if (days<VACATION_MIN_DAYS) days=VACATION_MIN_DAYS;
         else if (days>VACATION_MAX_DAYS) days=VACATION_MAX_DAYS;
         }
+      else if (parse_identifier(filter,CUS ":subject")==1)
+        {
+        if (parse_white(filter)==-1) return -1;
+        if ((m=parse_string(filter,&subject))!=1)
+          {
+          if (m==0) filter->errmsg=CUS "subject string expected";
+          return -1;
+          }
+        }
+      else if (parse_identifier(filter,CUS ":from")==1)
+        {
+        int start, end, domain;
+        uschar *error,*ss;
+
+        if (parse_white(filter)==-1) return -1;
+        if ((m=parse_string(filter,&from))!=1)
+          {
+          if (m==0) filter->errmsg=CUS "from string expected";
+          return -1;
+          }
+        if (from.length>0)
+          {
+          ss = parse_extract_address(from.character, &error, &start, &end, &domain,
+            FALSE);
+          if (ss == NULL)
+            {
+            filter->errmsg=string_sprintf("malformed address \"%s\" in "
+              "Sieve filter: %s", from.character, error);
+            return -1;
+            }
+          }
+        else
+          {
+          filter->errmsg=CUS "empty :from address in Sieve filter";
+          return -1;
+          }
+        }
       else if (parse_identifier(filter,CUS ":addresses")==1)
         {
         struct String *a;
@@ -2431,17 +2474,17 @@ while (*filter->pc)
           aliases=new;
           }
         }
-      else if (parse_identifier(filter,CUS ":subject")==1)
+      else if (parse_identifier(filter,CUS ":mime")==1)
+        reason_is_mime=1;
+      else if (parse_identifier(filter,CUS ":handle")==1)
         {
         if (parse_white(filter)==-1) return -1;
-        if ((m=parse_string(filter,&subject))!=1)
+        if ((m=parse_string(filter,&from))!=1)
           {
-          if (m==0) filter->errmsg=CUS "subject string expected";
+          if (m==0) filter->errmsg=CUS "handle string expected";
           return -1;
           }
         }
-      else if (parse_identifier(filter,CUS ":mime")==1)
-        reason_is_mime=1;
       else break;
       }
     if (parse_white(filter)==-1) return -1;
@@ -2467,102 +2510,128 @@ while (*filter->pc)
 
       if (filter_personal(aliases,TRUE))
         {
+        if (filter_test == FTEST_NONE)
+          {
+          /* ensure oncelog directory exists; failure will be detected later */
 
-        /* ensure oncelog directory exists; failure will be detected later */
-
-        (void)directory_make(NULL, filter->vacation_directory, 0700, FALSE);
-
+          (void)directory_make(NULL, filter->vacation_directory, 0700, FALSE);
+          }
         /* build oncelog filename */
 
         key.character=(uschar*)0;
         key.length=0;
         capacity=0;
-        if (subject.length!=-1) key.character=string_cat(key.character,&capacity,&key.length,subject.character,subject.length);
-        key.character=string_cat(key.character,&capacity,&key.length,reason_is_mime?US"1":US"0",1);
-        key.character=string_cat(key.character,&capacity,&key.length,reason.character,reason.length);
+        if (handle.length==-1)
+          {
+          if (subject.length!=-1) key.character=string_cat(key.character,&capacity,&key.length,subject.character,subject.length);
+          if (from.length!=-1) key.character=string_cat(key.character,&capacity,&key.length,from.character,from.length);
+          key.character=string_cat(key.character,&capacity,&key.length,reason_is_mime?US"1":US"0",1);
+          key.character=string_cat(key.character,&capacity,&key.length,reason.character,reason.length);
+          }
+        else
+          key=handle;
         md5_start(&base);
         md5_end(&base, key.character, key.length, digest);
         for (i = 0; i < 16; i++) sprintf(CS (hexdigest+2*i), "%02X", digest[i]);
-        capacity=Ustrlen(filter->vacation_directory);
-        start=capacity;
-        once=string_cat(filter->vacation_directory,&capacity,&start,US"/",1);
-        once=string_cat(once,&capacity,&start,hexdigest,33);
-
-        /* process subject */
-
-        if (subject.length==-1)
+        if (filter_test != FTEST_NONE)
           {
-          expand_header(&subject,&str_subject);
-          while (subject.length>=4 && Ustrncmp(subject.character,"Re: ",4)==0)
-          {
-            subject.character+=4;
-            subject.length-=4;
-          }
-          capacity=6;
-          start=6;
-          subject.character=string_cat(US"Auto: ",&capacity,&start,subject.character,subject.length);
-          subject.length=start;
+          debug_printf("Sieve: mail was personal, vacation file basename: %s\n", hexdigest);
           }
-
-        /* add address to list of generated addresses */
-
-        addr = deliver_make_addr(string_sprintf(">%.256s", sender_address), FALSE);
-        setflag(addr, af_pfr);
-        setflag(addr, af_ignore_error);
-        addr->next = *generated;
-        *generated = addr;
-        addr->reply = store_get(sizeof(reply_item));
-        memset(addr->reply,0,sizeof(reply_item)); /* XXX */
-        addr->reply->to = string_copy(sender_address);
-        /* Allocation is larger than neccessary, but enough even for split MIME words */
-        buffer_capacity=16+4*subject.length;
-        buffer=store_get(buffer_capacity);
-        addr->reply->subject=parse_quote_2047(subject.character, subject.length, US"utf-8", buffer, buffer_capacity);
-        addr->reply->oncelog=once;
-        addr->reply->once_repeat=days*86400;
-
-        /* build body and MIME headers */
-
-        if (reason_is_mime)
+        else
           {
-          uschar *mime_body,*reason_end;
+          capacity=Ustrlen(filter->vacation_directory);
+          start=capacity;
+          once=string_cat(filter->vacation_directory,&capacity,&start,US"/",1);
+          once=string_cat(once,&capacity,&start,hexdigest,33);
+          once[start] = '\0';
+
+          /* process subject */
+
+          if (subject.length==-1)
+            {
+            expand_header(&subject,&str_subject);
+            while (subject.length>=4 && Ustrncmp(subject.character,"Re: ",4)==0)
+            {
+              subject.character+=4;
+              subject.length-=4;
+            }
+            capacity=6;
+            start=6;
+            subject.character=string_cat(US"Auto: ",&capacity,&start,subject.character,subject.length);
+            subject.length=start;
+            }
+
+          /* add address to list of generated addresses */
+
+          addr = deliver_make_addr(string_sprintf(">%.256s", sender_address), FALSE);
+          setflag(addr, af_pfr);
+          setflag(addr, af_ignore_error);
+          addr->next = *generated;
+          *generated = addr;
+          addr->reply = store_get(sizeof(reply_item));
+          memset(addr->reply,0,sizeof(reply_item)); /* XXX */
+          addr->reply->to = string_copy(sender_address);
+          if (from.length==-1)
+            addr->reply->from = expand_string(US"$local_part@$domain");
+          else
+            addr->reply->from = from.character;
+          /* Allocation is larger than neccessary, but enough even for split MIME words */
+          buffer_capacity=16+4*subject.length;
+          buffer=store_get(buffer_capacity);
+          addr->reply->subject=parse_quote_2047(subject.character, subject.length, US"utf-8", buffer, buffer_capacity);
+          addr->reply->oncelog=once;
+          addr->reply->once_repeat=days*86400;
+
+          /* build body and MIME headers */
+
+          if (reason_is_mime)
+            {
+            uschar *mime_body,*reason_end;
 #ifdef RFC_EOL
-          static const uschar nlnl[]="\r\n\r\n";
+            static const uschar nlnl[]="\r\n\r\n";
 #else
-          static const uschar nlnl[]="\n\n";
+            static const uschar nlnl[]="\n\n";
 #endif
 
-          for
-            (
-            mime_body=reason.character,reason_end=reason.character+reason.length;
-            mime_body<(reason_end-sizeof(nlnl)-1) && memcmp(mime_body,nlnl,sizeof(nlnl)-1);
-            ++mime_body
-            );
-          capacity = 0;
-          start = 0;
-          addr->reply->headers = string_cat(NULL,&capacity,&start,reason.character,mime_body-reason.character);
-          capacity = 0;
-          start = 0;
-          if (mime_body<reason_end) mime_body+=sizeof(nlnl)-1;
-          addr->reply->text = string_cat(NULL,&capacity,&start,mime_body,reason_end-mime_body);
+            for
+              (
+              mime_body=reason.character,reason_end=reason.character+reason.length;
+              mime_body<(reason_end-sizeof(nlnl)-1) && memcmp(mime_body,nlnl,sizeof(nlnl)-1);
+              ++mime_body
+              );
+            capacity = 0;
+            start = 0;
+            addr->reply->headers = string_cat(NULL,&capacity,&start,reason.character,mime_body-reason.character);
+            addr->reply->headers[start] = '\0';
+            capacity = 0;
+            start = 0;
+            if (mime_body+(sizeof(nlnl)-1)<reason_end) mime_body+=sizeof(nlnl)-1;
+            else mime_body=reason_end-1;
+            addr->reply->text = string_cat(NULL,&capacity,&start,mime_body,reason_end-mime_body);
+            addr->reply->text[start] = '\0';
+            }
+          else
+            {
+            struct String qp;
+
+            capacity = 0;
+            start = reason.length;
+            addr->reply->headers = US"MIME-Version: 1.0\n"
+                                   "Content-Type: text/plain;\n"
+                                   "\tcharset=\"utf-8\"\n"
+                                   "Content-Transfer-Encoding: quoted-printable";
+            addr->reply->text = quoted_printable_encode(&reason,&qp)->character;
+            }
           }
-        else
+        }
+        else if (filter_test != FTEST_NONE)
           {
-          struct String qp;
-
-          capacity = 0;
-          start = reason.length;
-          addr->reply->headers = US"MIME-Version: 1.0\n"
-                                 "Content-Type: text/plain;\n"
-                                 "\tcharset=\"utf-8\"\n"
-                                 "Content-Transfer-Encoding: quoted-printable";
-          addr->reply->text = quoted_printable_encode(&reason,&qp)->character;
+          debug_printf("Sieve: mail was not personal, vacation would ignore it\n");
           }
-        }
       }
     }
+    else break;
 #endif
-  else break;
   }
 return 1;
 }
@@ -2602,7 +2671,7 @@ filter->require_iascii_numeric=0;
 
 if (parse_white(filter)==-1) return -1;
 
-if (exec && filter->vacation_directory != NULL)   /* 2nd test added by PH */
+if (exec && filter->vacation_directory != NULL && filter_test == FTEST_NONE)
   {
   DIR *oncelogdir;
   struct dirent *oncelog;
@@ -2661,7 +2730,7 @@ while (parse_identifier(filter,CUS "require"))
 #ifdef VACATION
     else if (eq_asciicase(check,&str_vacation,0))
       {
-      if (filter->vacation_directory == NULL)
+      if (filter_test == FTEST_NONE && filter->vacation_directory == NULL)
         {
         filter->errmsg=CUS "vacation disabled";
         return -1;
@@ -2701,6 +2770,8 @@ Arguments:
   options     controls whether various special things are allowed, and requests
               special actions (not currently used)
   sieve_vacation_directory  where to store vacation "once" files
+  useraddress string expression for :user part of address
+  subaddress  string expression for :subaddress part of address
   generated   where to hang newly-generated addresses
   error       where to pass back an error text
 
@@ -2714,7 +2785,7 @@ Returns:      FF_DELIVERED     success, a significant action was taken
 
 int
 sieve_interpret(uschar *filter, int options, uschar *vacation_directory,
-  address_item **generated, uschar **error)
+  uschar *useraddress, uschar *subaddress, address_item **generated, uschar **error)
 {
 struct Sieve sieve;
 int r;
@@ -2740,6 +2811,9 @@ else
     }
   }
 
+sieve.useraddress = useraddress == NULL ? CUS "$local_part_prefix$local_part$local_part_suffix" : useraddress;
+sieve.subaddress = subaddress;
+
 #ifdef COMPILE_SYNTAX_CHECKER
 if (parse_start(&sieve,0,generated)==1)
 #else
@@ -2771,7 +2845,7 @@ else
   }
 
 #ifndef COMPILE_SYNTAX_CHECKER
-if (filter_test != NULL) printf("%s\n", (const char*) msg);
+if (filter_test != FTEST_NONE) printf("%s\n", (const char*) msg);
   else debug_printf("%s\n", msg);
 #endif