/* $Cambridge: exim/exim-src/src/sieve.c,v 1.32 2007/10/11 12:44:30 michael Exp $ */
/*************************************************
* Exim - an Internet mail transport agent *
*************************************************/
/* Copyright (c) Michael Haardt 2003-2007 */
/* See the file NOTICE for conditions of use and distribution. */
/* This code was contributed by Michael Haardt. */
/* Sieve mail filter. */
#include <ctype.h>
#include <errno.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include "exim.h"
#if HAVE_ICONV
#include <iconv.h>
#endif
/* Define this for RFC compliant \r\n end-of-line terminators. */
/* Undefine it for UNIX-style \n end-of-line terminators (default). */
#undef RFC_EOL
/* Define this for development of the Sieve extension "encoded-character". */
#define ENCODED_CHARACTER
/* Define this for development of the Sieve extension "envelope-auth". */
#undef ENVELOPE_AUTH
/* Define this for development of the Sieve extension "enotify". */
#define ENOTIFY
/* Define this for the Sieve extension "subaddress". */
#define SUBADDRESS
/* Define this for the Sieve extension "vacation". */
#define VACATION
/* Must be >= 1 */
#define VACATION_MIN_DAYS 1
/* Must be >= VACATION_MIN_DAYS, must be > 7, should be > 30 */
#define VACATION_MAX_DAYS 31
/* Keep this at 75 to accept only RFC compliant MIME words. */
/* Increase it if you want to match headers from buggy MUAs. */
#define MIMEWORD_LENGTH 75
struct Sieve
{
uschar *filter;
const uschar *pc;
int line;
const uschar *errmsg;
int keep;
int require_envelope;
int require_fileinto;
#ifdef ENCODED_CHARACTER
int require_encoded_character;
#endif
#ifdef ENVELOPE_AUTH
int require_envelope_auth;
#endif
#ifdef ENOTIFY
int require_enotify;
struct Notification *notified;
#endif
#ifdef SUBADDRESS
int require_subaddress;
#endif
#ifdef VACATION
int require_vacation;
int vacation_ran;
#endif
uschar *vacation_directory;
const uschar *subaddress;
const uschar *useraddress;
int require_copy;
int require_iascii_numeric;
};
enum Comparator { COMP_OCTET, COMP_EN_ASCII_CASEMAP, COMP_ASCII_NUMERIC };
enum MatchType { MATCH_IS, MATCH_CONTAINS, MATCH_MATCHES };
#ifdef SUBADDRESS
enum AddressPart { ADDRPART_USER, ADDRPART_DETAIL, ADDRPART_LOCALPART, ADDRPART_DOMAIN, ADDRPART_ALL };
#else
enum AddressPart { ADDRPART_LOCALPART, ADDRPART_DOMAIN, ADDRPART_ALL };
#endif
enum RelOp { LT, LE, EQ, GE, GT, NE };
struct String
{
uschar *character;
int length;
};
struct Notification
{
struct String method;
struct String importance;
struct String message;
struct Notification *next;
};
static int eq_asciicase(const struct String *needle, const struct String *haystack, int match_prefix);
static int parse_test(struct Sieve *filter, int *cond, int exec);
static int parse_commands(struct Sieve *filter, int exec, address_item **generated);
static uschar str_from_c[]="From";
static const struct String str_from={ str_from_c, 4 };
static uschar str_to_c[]="To";
static const struct String str_to={ str_to_c, 2 };
static uschar str_cc_c[]="Cc";
static const struct String str_cc={ str_cc_c, 2 };
static uschar str_bcc_c[]="Bcc";
static const struct String str_bcc={ str_bcc_c, 3 };
static uschar str_auth_c[]="auth";
static const struct String str_auth={ str_auth_c, 4 };
static uschar str_sender_c[]="Sender";
static const struct String str_sender={ str_sender_c, 6 };
static uschar str_resent_from_c[]="Resent-From";
static const struct String str_resent_from={ str_resent_from_c, 11 };
static uschar str_resent_to_c[]="Resent-To";
static const struct String str_resent_to={ str_resent_to_c, 9 };
static uschar str_fileinto_c[]="fileinto";
static const struct String str_fileinto={ str_fileinto_c, 8 };
static uschar str_envelope_c[]="envelope";
static const struct String str_envelope={ str_envelope_c, 8 };
#ifdef ENCODED_CHARACTER
static uschar str_encoded_character_c[]="encoded-character";
static const struct String str_encoded_character={ str_encoded_character_c, 17 };
#endif
#ifdef ENVELOPE_AUTH
static uschar str_envelope_auth_c[]="envelope-auth";
static const struct String str_envelope_auth={ str_envelope_auth_c, 13 };
#endif
#ifdef ENOTIFY
static uschar str_enotify_c[]="enotify";
static const struct String str_enotify={ str_enotify_c, 7 };
static uschar str_online_c[]="online";
static const struct String str_online={ str_online_c, 6 };
static uschar str_maybe_c[]="maybe";
static const struct String str_maybe={ str_maybe_c, 5 };
static uschar str_auto_submitted_c[]="Auto-Submitted";
static const struct String str_auto_submitted={ str_auto_submitted_c, 14 };
#endif
#ifdef SUBADDRESS
static uschar str_subaddress_c[]="subaddress";
static const struct String str_subaddress={ str_subaddress_c, 10 };
#endif
#ifdef VACATION
static uschar str_vacation_c[]="vacation";
static const struct String str_vacation={ str_vacation_c, 8 };
static uschar str_subject_c[]="Subject";
static const struct String str_subject={ str_subject_c, 7 };
#endif
static uschar str_copy_c[]="copy";
static const struct String str_copy={ str_copy_c, 4 };
static uschar str_iascii_casemap_c[]="i;ascii-casemap";
static const struct String str_iascii_casemap={ str_iascii_casemap_c, 15 };
static uschar str_enascii_casemap_c[]="en;ascii-casemap";
static const struct String str_enascii_casemap={ str_enascii_casemap_c, 16 };
static uschar str_ioctet_c[]="i;octet";
static const struct String str_ioctet={ str_ioctet_c, 7 };
static uschar str_iascii_numeric_c[]="i;ascii-numeric";
static const struct String str_iascii_numeric={ str_iascii_numeric_c, 15 };
static uschar str_comparator_iascii_casemap_c[]="comparator-i;ascii-casemap";
static const struct String str_comparator_iascii_casemap={ str_comparator_iascii_casemap_c, 26 };
static uschar str_comparator_enascii_casemap_c[]="comparator-en;ascii-casemap";
static const struct String str_comparator_enascii_casemap={ str_comparator_enascii_casemap_c, 27 };
static uschar str_comparator_ioctet_c[]="comparator-i;octet";
static const struct String str_comparator_ioctet={ str_comparator_ioctet_c, 18 };
static uschar str_comparator_iascii_numeric_c[]="comparator-i;ascii-numeric";
static const struct String str_comparator_iascii_numeric={ str_comparator_iascii_numeric_c, 26 };
/*************************************************
* Encode to quoted-printable *
*************************************************/
/*
Arguments:
src UTF-8 string
dst US-ASCII string
Returns
dst
*/
static struct String *quoted_printable_encode(const struct String *src, struct String *dst)
{
int pass;
const uschar *start,*end;
uschar *new = NULL;
uschar ch;
size_t line;
for (pass=0; pass<=1; ++pass)
{
line=0;
if (pass==0)
dst->length=0;
else
{
dst->character=store_get(dst->length+1); /* plus one for \0 */
new=dst->character;
}
for (start=src->character,end=start+src->length; start<end; ++start)
{
ch=*start;
if (line>=73)
{
if (pass==0)
dst->length+=2;
else
{
*new++='=';
*new++='\n';
}
line=0;
}
if
(
(ch>=33 && ch<=60)
|| (ch>=62 && ch<=126)
||
(
(ch==9 || ch==32)
&& start+2<end
&& (*(start+1)!='\r' || *(start+2)!='\n')
)
)
{
if (pass==0)
++dst->length;
else
*new++=*start;
++line;
}
else if (ch=='\r' && start+1<end && *(start+1)=='\n')
{
if (pass==0)
{
++dst->length;
line=0;
}
else
*new++='\n';
line=0;
++start;
}
else
{
if (pass==0)
dst->length+=3;
else
{
sprintf(CS new,"=%02X",ch);
new+=3;
}
line+=3;
}
}
}
*new='\0'; /* not included in length, but nice */
return dst;
}
/*************************************************
* Check mail address for correct syntax *
*************************************************/
/*
Check mail address for being syntactically correct.
Arguments:
filter points to the Sieve filter including its state
address String containing one address
Returns
1 Mail address is syntactically OK
-1 syntax error
*/
int check_mail_address(struct Sieve *filter, const struct String *address)
{
int start, end, domain;
uschar *error,*ss;
if (address->length>0)
{
ss = parse_extract_address(address->character, &error, &start, &end, &domain,
FALSE);
if (ss == NULL)
{
filter->errmsg=string_sprintf("malformed address \"%s\" (%s)",
address->character, error);
return -1;
}
else
return 1;
}
else
{
filter->errmsg=CUS "empty address";
return -1;
}
}
/*************************************************
* Decode URI encoded string *
*************************************************/
/*
Arguments:
str URI encoded string
Returns
0 Decoding successful
-1 Encoding error
*/
#ifdef ENOTIFY
static int uri_decode(struct String *str)
{
uschar *s,*t,*e;
if (str->length==0) return 0;
for (s=str->character,t=s,e=s+str->length; s<e; )
{
if (*s=='%')
{
if (s+2<e && isxdigit(*(s+1)) && isxdigit(*(s+2)))
{
*t++=((isdigit(*(s+1)) ? *(s+1)-'0' : tolower(*(s+1))-'a'+10)<<4)
| (isdigit(*(s+2)) ? *(s+2)-'0' : tolower(*(s+2))-'a'+10);
s+=3;
}
else return -1;
}
else
*t++=*s++;
}
*t='\0';
str->length=t-str->character;
return 0;
}
/*************************************************
* Parse mailto URI *
*************************************************/
/*
Parse mailto-URI.
mailtoURI = "mailto:" [ to ] [ headers ]
to = [ addr-spec *("%2C" addr-spec ) ]
headers = "?" header *( "&" header )
header = hname "=" hvalue
hname = *urlc
hvalue = *urlc
Arguments:
filter points to the Sieve filter including its state
uri URI, excluding scheme
recipient
body
Returns
1 URI is syntactically OK
0 Unknown URI scheme
-1 syntax error
*/
static int parse_mailto_uri(struct Sieve *filter, const uschar *uri, string_item **recipient, struct String *header, struct String *subject, struct String *body)
{
const uschar *start;
struct String to,hname,hvalue;
int capacity;
string_item *new;
if (Ustrncmp(uri,"mailto:",7))
{
filter->errmsg=US "Unknown URI scheme";
return 0;
}
uri+=7;
if (*uri && *uri!='?')
for (;;)
{
/* match to */
for (start=uri; *uri && *uri!='?' && (*uri!='%' || *(uri+1)!='2' || tolower(*(uri+2))!='c'); ++uri);
if (uri>start)
{
capacity=0;
to.character=(uschar*)0;
to.length=0;
to.character=string_cat(to.character,&capacity,&to.length,start,uri-start);
to.character[to.length]='\0';
if (uri_decode(&to)==-1)
{
filter->errmsg=US"Invalid URI encoding";
return -1;
}
new=store_get(sizeof(string_item));
new->text=store_get(to.length+1);
if (to.length) memcpy(new->text,to.character,to.length);
new->text[to.length]='\0';
new->next=*recipient;
*recipient=new;
}
else
{
filter->errmsg=US"Missing addr-spec in URI";
return -1;
}
if (*uri=='%') uri+=3;
else break;
}
if (*uri=='?')
{
++uri;
for (;;)
{
/* match hname */
for (start=uri; *uri && (isalnum(*uri) || strchr("$-_.+!*'(),%",*uri)); ++uri);
if (uri>start)
{
capacity=0;
hname.character=(uschar*)0;
hname.length=0;
hname.character=string_cat(hname.character,&capacity,&hname.length,start,uri-start);
hname.character[hname.length]='\0';
if (uri_decode(&hname)==-1)
{
filter->errmsg=US"Invalid URI encoding";
return -1;
}
}
/* match = */
if (*uri=='=')
++uri;
else
{
filter->errmsg=US"Missing equal after hname";
return -1;
}
/* match hvalue */
for (start=uri; *uri && (isalnum(*uri) || strchr("$-_.+!*'(),%",*uri)); ++uri);
if (uri>start)
{
capacity=0;
hvalue.character=(uschar*)0;
hvalue.length=0;
hvalue.character=string_cat(hvalue.character,&capacity,&hvalue.length,start,uri-start);
hvalue.character[hvalue.length]='\0';
if (uri_decode(&hvalue)==-1)
{
filter->errmsg=US"Invalid URI encoding";
return -1;
}
}
if (hname.length==2 && strcmpic(hname.character, US"to")==0)
{
new=store_get(sizeof(string_item));
new->text=store_get(hvalue.length+1);
if (hvalue.length) memcpy(new->text,hvalue.character,hvalue.length);
new->text[hvalue.length]='\0';
new->next=*recipient;
*recipient=new;
}
else if (hname.length==4 && strcmpic(hname.character, US"body")==0)
*body=hvalue;
else if (hname.length==7 && strcmpic(hname.character, US"subject")==0)
*subject=hvalue;
else
{
static struct String ignore[]=
{
{US"date",4},
{US"from",4},
{US"message-id",10},
{US"received",8},
{US"auto-submitted",14}
};
static struct String *end=ignore+sizeof(ignore)/sizeof(ignore[0]);
struct String *i;
for (i=ignore; i<end && !eq_asciicase(&hname,i,0); ++i);
if (i==end)
{
if (header->length==-1) header->length=0;
capacity=header->length;
header->character=string_cat(header->character,&capacity,&header->length,hname.character,hname.length);
header->character=string_cat(header->character,&capacity,&header->length,CUS ": ",2);
header->character=string_cat(header->character,&capacity,&header->length,hvalue.character,hvalue.length);
header->character=string_cat(header->character,&capacity,&header->length,CUS "\n",1);
header->character[header->length]='\0';
}
}
if (*uri=='&') ++uri;
else break;
}
}
if (*uri)
{
filter->errmsg=US"Syntactically invalid URI";
return -1;
}
return 1;
}
#endif
/*************************************************
* Octet-wise string comparison *
*************************************************/
/*
Arguments:
needle UTF-8 string to search ...
haystack ... inside the haystack
match_prefix 1 to compare if needle is a prefix of haystack
Returns: 0 needle not found in haystack
1 needle found
*/
static int eq_octet(const struct String *needle,
const struct String *haystack, int match_prefix)
{
size_t nl,hl;
const uschar *n,*h;
nl=needle->length;
n=needle->character;
hl=haystack->length;
h=haystack->character;
while (nl>0 && hl>0)
{
#if !HAVE_ICONV
if (*n&0x80) return 0;
if (*h&0x80) return 0;
#endif
if (*n!=*h) return 0;
++n;
++h;
--nl;
--hl;
}
return (match_prefix ? nl==0 : nl==0 && hl==0);
}
/*************************************************
* ASCII case-insensitive string comparison *
*************************************************/
/*
Arguments:
needle UTF-8 string to search ...
haystack ... inside the haystack
match_prefix 1 to compare if needle is a prefix of haystack
Returns: 0 needle not found in haystack
1 needle found
*/
static int eq_asciicase(const struct String *needle,
const struct String *haystack, int match_prefix)
{
size_t nl,hl;
const uschar *n,*h;
uschar nc,hc;
nl=needle->length;
n=needle->character;
hl=haystack->length;
h=haystack->character;
while (nl>0 && hl>0)
{
nc=*n;
hc=*h;
#if !HAVE_ICONV
if (nc&0x80) return 0;
if (hc&0x80) return 0;
#endif
/* tolower depends on the locale and only ASCII case must be insensitive */
if ((nc>='A' && nc<='Z' ? nc|0x20 : nc) != (hc>='A' && hc<='Z' ? hc|0x20 : hc)) return 0;
++n;
++h;
--nl;
--hl;
}
return (match_prefix ? nl==0 : nl==0 && hl==0);
}
/*************************************************
* Glob pattern search *
*************************************************/
/*
Arguments:
needle pattern to search ...
haystack ... inside the haystack
Returns: 0 needle not found in haystack
1 needle found
-1 pattern error
*/
static int eq_glob(const struct String *needle,
const struct String *haystack, int ascii_caseless, int match_octet)
{
const uschar *n,*h,*nend,*hend;
int may_advance=0;
n=needle->character;
h=haystack->character;
nend=n+needle->length;
hend=h+haystack->length;
while (n<nend)
{
if (*n=='*')
{
++n;
may_advance=1;
}
else
{
const uschar *npart,*hpart;
/* Try to match a non-star part of the needle at the current */
/* position in the haystack. */
match_part:
npart=n;
hpart=h;
while (npart<nend && *npart!='*') switch (*npart)
{
case '?':
{
if (hpart==hend) return 0;
if (match_octet)
++hpart;
else
{
/* Match one UTF8 encoded character */
if ((*hpart&0xc0)==0xc0)
{
++hpart;
while (hpart<hend && ((*hpart&0xc0)==0x80)) ++hpart;
}
else
++hpart;
}
++npart;
break;
}
case '\\':
{
++npart;
if (npart==nend) return -1;
/* FALLTHROUGH */
}
default:
{
if (hpart==hend) return 0;
/* tolower depends on the locale, but we need ASCII */
if
(
#if !HAVE_ICONV
(*hpart&0x80) || (*npart&0x80) ||
#endif
ascii_caseless
? ((*npart>='A' && *npart<='Z' ? *npart|0x20 : *npart) != (*hpart>='A' && *hpart<='Z' ? *hpart|0x20 : *hpart))
: *hpart!=*npart
)
{
if (may_advance)
/* string match after a star failed, advance and try again */
{
++h;
goto match_part;
}
else return 0;
}
else
{
++npart;
++hpart;
};
}
}
/* at this point, a part was matched successfully */
if (may_advance && npart==nend && hpart<hend)
/* needle ends, but haystack does not: if there was a star before, advance and try again */
{
++h;
goto match_part;
}
h=hpart;
n=npart;
may_advance=0;
}
}
return (h==hend ? 1 : may_advance);
}
/*************************************************
* ASCII numeric comparison *
*************************************************/
/*
Arguments:
a first numeric string
b second numeric string
relop relational operator
Returns: 0 not (a relop b)
1 a relop b
*/
static int eq_asciinumeric(const struct String *a,
const struct String *b, enum RelOp relop)
{
size_t al,bl;
const uschar *as,*aend,*bs,*bend;
int cmp;
as=a->character;
aend=a->character+a->length;
bs=b->character;
bend=b->character+b->length;
while (*as>='0' && *as<='9' && as<aend) ++as;
al=as-a->character;
while (*bs>='0' && *bs<='9' && bs<bend) ++bs;
bl=bs-b->character;
if (al && bl==0) cmp=-1;
else if (al==0 && bl==0) cmp=0;
else if (al==0 && bl) cmp=1;
else
{
cmp=al-bl;
if (cmp==0) cmp=memcmp(a->character,b->character,al);
}
switch (relop)
{
case LT: return cmp<0;
case LE: return cmp<=0;
case EQ: return cmp==0;
case GE: return cmp>=0;
case GT: return cmp>0;
case NE: return cmp!=0;
}
/*NOTREACHED*/
return -1;
}
/*************************************************
* Compare strings *
*************************************************/
/*
Arguments:
filter points to the Sieve filter including its state
needle UTF-8 pattern or string to search ...
haystack ... inside the haystack
co comparator to use
mt match type to use
Returns: 0 needle not found in haystack
1 needle found
-1 comparator does not offer matchtype
*/
static int compare(struct Sieve *filter, const struct String *needle, const struct String *haystack,
enum Comparator co, enum MatchType mt)
{
int r=0;
if ((filter_test != FTEST_NONE && debug_selector != 0) ||
(debug_selector & D_filter) != 0)
{
debug_printf("String comparison (match ");
switch (mt)
{
case MATCH_IS: debug_printf(":is"); break;
case MATCH_CONTAINS: debug_printf(":contains"); break;
case MATCH_MATCHES: debug_printf(":matches"); break;
}
debug_printf(", comparison \"");
switch (co)
{
case COMP_OCTET: debug_printf("i;octet"); break;
case COMP_EN_ASCII_CASEMAP: debug_printf("en;ascii-casemap"); break;
case COMP_ASCII_NUMERIC: debug_printf("i;ascii-numeric"); break;
}
debug_printf("\"):\n");
debug_printf(" Search = %s (%d chars)\n", needle->character,needle->length);
debug_printf(" Inside = %s (%d chars)\n", haystack->character,haystack->length);
}
switch (mt)
{
case MATCH_IS:
{
switch (co)
{
case COMP_OCTET:
{
if (eq_octet(needle,haystack,0)) r=1;
break;
}
case COMP_EN_ASCII_CASEMAP:
{
if (eq_asciicase(needle,haystack,0)) r=1;
break;
}
case COMP_ASCII_NUMERIC:
{
if (!filter->require_iascii_numeric)
{
filter->errmsg=CUS "missing previous require \"comparator-i;ascii-numeric\";";
return -1;
}
if (eq_asciinumeric(needle,haystack,EQ)) r=1;
break;
}
}
break;
}
case MATCH_CONTAINS:
{
struct String h;
switch (co)
{
case COMP_OCTET:
{
for (h=*haystack; h.length; ++h.character,--h.length) if (eq_octet(needle,&h,1)) { r=1; break; }
break;
}
case COMP_EN_ASCII_CASEMAP:
{
for (h=*haystack; h.length; ++h.character,--h.length) if (eq_asciicase(needle,&h,1)) { r=1; break; }
break;
}
default:
{
filter->errmsg=CUS "comparator does not offer specified matchtype";
return -1;
}
}
break;
}
case MATCH_MATCHES:
{
switch (co)
{
case COMP_OCTET:
{
if ((r=eq_glob(needle,haystack,0,1))==-1)
{
filter->errmsg=CUS "syntactically invalid pattern";
return -1;
}
break;
}
case COMP_EN_ASCII_CASEMAP:
{
if ((r=eq_glob(needle,haystack,1,1))==-1)
{
filter->errmsg=CUS "syntactically invalid pattern";
return -1;
}
break;
}
default:
{
filter->errmsg=CUS "comparator does not offer specified matchtype";
return -1;
}
}
break;
}
}
if ((filter_test != FTEST_NONE && debug_selector != 0) ||
(debug_selector & D_filter) != 0)
debug_printf(" Result %s\n",r?"true":"false");
return r;
}
/*************************************************
* Check header field syntax *
*************************************************/
/*
RFC 2822, section 3.6.8 says:
field-name = 1*ftext
ftext = %d33-57 / ; Any character except
%d59-126 ; controls, SP, and
; ":".
That forbids 8-bit header fields. This implementation accepts them, since
all of Exim is 8-bit clean, so it adds %d128-%d255.
Arguments:
header header field to quote for suitable use in Exim expansions
Returns: 0 string is not a valid header field
1 string is a value header field
*/
static int is_header(const struct String *header)
{
size_t l;
const uschar *h;
l=header->length;
h=header->character;
if (l==0) return 0;
while (l)
{
if (((unsigned char)*h)<33 || ((unsigned char)*h)==':' || ((unsigned char)*h)==127) return 0;
else
{
++h;
--l;
}
}
return 1;
}
/*************************************************
* Quote special characters string *
*************************************************/
/*
Arguments:
header header field to quote for suitable use in Exim expansions
or as debug output
Returns: quoted string
*/
static const uschar *quote(const struct String *header)
{
uschar *quoted=NULL;
int size=0,ptr=0;
size_t l;
const uschar *h;
l=header->length;
h=header->character;
while (l)
{
switch (*h)
{
case '\0':
{
quoted=string_cat(quoted,&size,&ptr,CUS "\\0",2);
break;
}
case '$':
case '{':
case '}':
{
quoted=string_cat(quoted,&size,&ptr,CUS "\\",1);
}
default:
{
quoted=string_cat(quoted,&size,&ptr,h,1);
}
}
++h;
--l;
}
quoted=string_cat(quoted,&size,&ptr,CUS "",1);
return quoted;
}
/*************************************************
* Add address to list of generated addresses *
*************************************************/
/*
According to RFC 3028, duplicate delivery to the same address must
not happen, so the list is first searched for the address.
Arguments:
generated list of generated addresses
addr new address to add
file address denotes a file
Returns: nothing
*/
static void add_addr(address_item **generated, uschar *addr, int file, int maxage, int maxmessages, int maxstorage)
{
address_item *new_addr;
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 != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
{
debug_printf("Repeated %s `%s' ignored.\n",file ? "fileinto" : "redirect", addr);
}
return;
}
}
if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
{
debug_printf("%s `%s'\n",file ? "fileinto" : "redirect", addr);
}
new_addr=deliver_make_addr(addr,TRUE);
if (file)
{
setflag(new_addr, af_pfr|af_file);
new_addr->mode = 0;
}
new_addr->p.errors_address = NULL;
new_addr->next = *generated;
*generated = new_addr;
}
/*************************************************
* Return decoded header field *
*************************************************/
/*
Unfold the header field as described in RFC 2822 and remove all
leading and trailing white space, then perform MIME decoding and
translate the header field to UTF-8.
Arguments:
value returned value of the field
header name of the header field
Returns: nothing The expanded string is empty
in case there is no such header
*/
static void expand_header(struct String *value, const struct String *header)
{
uschar *s,*r,*t;
uschar *errmsg;
value->length=0;
value->character=(uschar*)0;
t=r=s=expand_string(string_sprintf("$rheader_%s",quote(header)));
while (*r==' ' || *r=='\t') ++r;
while (*r)
{
if (*r=='\n')
++r;
else
*t++=*r++;
}
while (t>s && (*(t-1)==' ' || *(t-1)=='\t')) --t;
*t='\0';
value->character=rfc2047_decode(s,check_rfc2047_length,US"utf-8",'\0',&value->length,&errmsg);
}
/*************************************************
* Parse remaining hash comment *
*************************************************/
/*
Token definition:
Comment up to terminating CRLF
Arguments:
filter points to the Sieve filter including its state
Returns: 1 success
-1 syntax error
*/
static int parse_hashcomment(struct Sieve *filter)
{
++filter->pc;
while (*filter->pc)
{
#ifdef RFC_EOL
if (*filter->pc=='\r' && *(filter->pc+1)=='\n')
#else
if (*filter->pc=='\n')
#endif
{
#ifdef RFC_EOL
filter->pc+=2;
#else
++filter->pc;
#endif
++filter->line;
return 1;
}
else ++filter->pc;
}
filter->errmsg=CUS "missing end of comment";
return -1;
}
/*************************************************
* Parse remaining C-style comment *
*************************************************/
/*
Token definition:
Everything up to star slash
Arguments:
filter points to the Sieve filter including its state
Returns: 1 success
-1 syntax error
*/
static int parse_comment(struct Sieve *filter)
{
filter->pc+=2;
while (*filter->pc)
{
if (*filter->pc=='*' && *(filter->pc+1)=='/')
{
filter->pc+=2;
return 1;
}
else ++filter->pc;
}
filter->errmsg=CUS "missing end of comment";
return -1;
}
/*************************************************
* Parse optional white space *
*************************************************/
/*
Token definition:
Spaces, tabs, CRLFs, hash comments or C-style comments
Arguments:
filter points to the Sieve filter including its state
Returns: 1 success
-1 syntax error
*/
static int parse_white(struct Sieve *filter)
{
while (*filter->pc)
{
if (*filter->pc==' ' || *filter->pc=='\t') ++filter->pc;
#ifdef RFC_EOL
else if (*filter->pc=='\r' && *(filter->pc+1)=='\n')
#else
else if (*filter->pc=='\n')
#endif
{
#ifdef RFC_EOL
filter->pc+=2;
#else
++filter->pc;
#endif
++filter->line;
}
else if (*filter->pc=='#')
{
if (parse_hashcomment(filter)==-1) return -1;
}
else if (*filter->pc=='/' && *(filter->pc+1)=='*')
{
if (parse_comment(filter)==-1) return -1;
}
else break;
}
return 1;
}
#ifdef ENCODED_CHARACTER
/*************************************************
* Decode hex-encoded-character string *
*************************************************/
/*
Encoding definition:
blank = SP / TAB / CRLF
hex-pair-seq = *blank hex-pair *(1*blank hex-pair) *blank
hex-pair = 1*2HEXDIG
Arguments:
src points to a hex-pair-seq
end points to its end
dst points to the destination of the decoded octets,
optionally to (uschar*)0 for checking only
Returns: >=0 number of decoded octets
-1 syntax error
*/
static int hex_decode(uschar *src, uschar *end, uschar *dst)
{
int decoded=0;
while (*src==' ' || *src=='\t' || *src=='\n') ++src;
do
{
int x,d,n;
for (x=0,d=0; d<2 && src<end && isxdigit(n=tolower(*src)); x=(x<<4)|(n>='0' && n<='9' ? n-'0' : 10+(n-'a')),++d,++src);
if (d==0) return -1;
if (dst) *dst++=x;
++decoded;
if (src==end) return decoded;
if (*src==' ' || *src=='\t' || *src=='\n')
while (*src==' ' || *src=='\t' || *src=='\n') ++src;
else
return -1;
}
while (src<end);
return decoded;
}
/*************************************************
* Decode unicode-encoded-character string *
*************************************************/
/*
Encoding definition:
blank = SP / TAB / CRLF
unicode-hex-seq = *blank unicode-hex *(blank unicode-hex) *blank
unicode-hex = 1*HEXDIG
It is an error for a script to use a hexadecimal value that isn't in
either the range 0 to D7FF or the range E000 to 10FFFF.
At this time, strings are already scanned, thus the CRLF is converted
to the internally used \n (should RFC_EOL have been used).
Arguments:
src points to a unicode-hex-seq
end points to its end
dst points to the destination of the decoded octets,
optionally to (uschar*)0 for checking only
Returns: >=0 number of decoded octets
-1 syntax error
-2 semantic error (character range violation)
*/
static int unicode_decode(uschar *src, uschar *end, uschar *dst)
{
int decoded=0;
while (*src==' ' || *src=='\t' || *src=='\n') ++src;
do
{
uschar *hex_seq;
int c,d,n;
unicode_hex:
for (hex_seq=src; src<end && *src=='0'; ++src);
for (c=0,d=0; d<7 && src<end && isxdigit(n=tolower(*src)); c=(c<<4)|(n>='0' && n<='9' ? n-'0' : 10+(n-'a')),++d,++src);
if (src==hex_seq) return -1;
if (d==7 || (!((c>=0 && c<=0xd7ff) || (c>=0xe000 && c<=0x10ffff)))) return -2;
if (c<128)
{
if (dst) *dst++=c;
++decoded;
}
else if (c>=0x80 && c<=0x7ff)
{
if (dst)
{
*dst++=192+(c>>6);
*dst++=128+(c&0x3f);
}
decoded+=2;
}
else if (c>=0x800 && c<=0xffff)
{
if (dst)
{
*dst++=224+(c>>12);
*dst++=128+((c>>6)&0x3f);
*dst++=128+(c&0x3f);
}
decoded+=3;
}
else if (c>=0x10000 && c<=0x1fffff)
{
if (dst)
{
*dst++=240+(c>>18);
*dst++=128+((c>>10)&0x3f);
*dst++=128+((c>>6)&0x3f);
*dst++=128+(c&0x3f);
}
decoded+=4;
}
if (*src==' ' || *src=='\t' || *src=='\n')
{
while (*src==' ' || *src=='\t' || *src=='\n') ++src;
if (src==end) return decoded;
goto unicode_hex;
}
}
while (src<end);
return decoded;
}
/*************************************************
* Decode encoded-character string *
*************************************************/
/*
Encoding definition:
encoded-arb-octets = "${hex:" hex-pair-seq "}"
encoded-unicode-char = "${unicode:" unicode-hex-seq "}"
Arguments:
encoded points to an encoded string, returns decoded string
filter points to the Sieve filter including its state
Returns: 1 success
-1 syntax error
*/
static int string_decode(struct Sieve *filter, struct String *data)
{
uschar *src,*dst,*end;
src=data->character;
dst=src;
end=data->character+data->length;
while (src<end)
{
uschar *brace;
if (
strncmpic(src,US "${hex:",6)==0
&& (brace=Ustrchr(src+6,'}'))!=(uschar*)0
&& (hex_decode(src+6,brace,(uschar*)0))>=0
)
{
dst+=hex_decode(src+6,brace,dst);
src=brace+1;
}
else if (
strncmpic(src,US "${unicode:",10)==0
&& (brace=Ustrchr(src+10,'}'))!=(uschar*)0
)
{
switch (unicode_decode(src+10,brace,(uschar*)0))
{
case -2:
{
filter->errmsg=CUS "unicode character out of range";
return -1;
}
case -1:
{
*dst++=*src++;
break;
}
default:
{
dst+=unicode_decode(src+10,brace,dst);
src=brace+1;
}
}
}
else *dst++=*src++;
}
data->length=dst-data->character;
*dst='\0';
return 1;
}
#endif
/*************************************************
* Parse an optional string *
*************************************************/
/*
Token definition:
quoted-string = DQUOTE *CHAR DQUOTE
;; in general, \ CHAR inside a string maps to CHAR
;; so \" maps to " and \\ maps to \
;; note that newlines and other characters are all allowed
;; in strings
multi-line = "text:" *(SP / HTAB) (hash-comment / CRLF)
*(multi-line-literal / multi-line-dotstuff)
"." CRLF
multi-line-literal = [CHAR-NOT-DOT *CHAR-NOT-CRLF] CRLF
multi-line-dotstuff = "." 1*CHAR-NOT-CRLF CRLF
;; A line containing only "." ends the multi-line.
;; Remove a leading '.' if followed by another '.'.
string = quoted-string / multi-line
Arguments:
filter points to the Sieve filter including its state
id specifies identifier to match
Returns: 1 success
-1 syntax error
0 identifier not matched
*/
static int parse_string(struct Sieve *filter, struct String *data)
{
int dataCapacity=0;
data->length=0;
data->character=(uschar*)0;
if (*filter->pc=='"') /* quoted string */
{
++filter->pc;
while (*filter->pc)
{
if (*filter->pc=='"') /* end of string */
{
int foo=data->length;
++filter->pc;
/* that way, there will be at least one character allocated */
data->character=string_cat(data->character,&dataCapacity,&foo,CUS "",1);
#ifdef ENCODED_CHARACTER
if (filter->require_encoded_character
&& string_decode(filter,data)==-1)
return -1;
#endif
return 1;
}
else if (*filter->pc=='\\' && *(filter->pc+1)) /* quoted character */
{
data->character=string_cat(data->character,&dataCapacity,&data->length,filter->pc+1,1);
filter->pc+=2;
}
else /* regular character */
{
#ifdef RFC_EOL
if (*filter->pc=='\r' && *(filter->pc+1)=='\n') ++filter->line;
#else
if (*filter->pc=='\n')
{
data->character=string_cat(data->character,&dataCapacity,&data->length,US"\r",1);
++filter->line;
}
#endif
data->character=string_cat(data->character,&dataCapacity,&data->length,filter->pc,1);
filter->pc++;
}
}
filter->errmsg=CUS "missing end of string";
return -1;
}
else if (Ustrncmp(filter->pc,CUS "text:",5)==0) /* multiline string */
{
filter->pc+=5;
/* skip optional white space followed by hashed comment or CRLF */
while (*filter->pc==' ' || *filter->pc=='\t') ++filter->pc;
if (*filter->pc=='#')
{
if (parse_hashcomment(filter)==-1) return -1;
}
#ifdef RFC_EOL
else if (*filter->pc=='\r' && *(filter->pc+1)=='\n')
#else
else if (*filter->pc=='\n')
#endif
{
#ifdef RFC_EOL
filter->pc+=2;
#else
++filter->pc;
#endif
++filter->line;
}
else
{
filter->errmsg=CUS "syntax error";
return -1;
}
while (*filter->pc)
{
#ifdef RFC_EOL
if (*filter->pc=='\r' && *(filter->pc+1)=='\n') /* end of line */
#else
if (*filter->pc=='\n') /* end of line */
#endif
{
data->character=string_cat(data->character,&dataCapacity,&data->length,CUS "\r\n",2);
#ifdef RFC_EOL
filter->pc+=2;
#else
++filter->pc;
#endif
++filter->line;
#ifdef RFC_EOL
if (*filter->pc=='.' && *(filter->pc+1)=='\r' && *(filter->pc+2)=='\n') /* end of string */
#else
if (*filter->pc=='.' && *(filter->pc+1)=='\n') /* end of string */
#endif
{
int foo=data->length;
/* that way, there will be at least one character allocated */
data->character=string_cat(data->character,&dataCapacity,&foo,CUS "",1);
#ifdef RFC_EOL
filter->pc+=3;
#else
filter->pc+=2;
#endif
++filter->line;
#ifdef ENCODED_CHARACTER
if (filter->require_encoded_character
&& string_decode(filter,data)==-1)
return -1;
#endif
return 1;
}
else if (*filter->pc=='.' && *(filter->pc+1)=='.') /* remove dot stuffing */
{
data->character=string_cat(data->character,&dataCapacity,&data->length,CUS ".",1);
filter->pc+=2;
}
}
else /* regular character */
{
data->character=string_cat(data->character,&dataCapacity,&data->length,filter->pc,1);
filter->pc++;
}
}
filter->errmsg=CUS "missing end of multi line string";
return -1;
}
else return 0;
}
/*************************************************
* Parse a specific identifier *
*************************************************/
/*
Token definition:
identifier = (ALPHA / "_") *(ALPHA DIGIT "_")
Arguments:
filter points to the Sieve filter including its state
id specifies identifier to match
Returns: 1 success
0 identifier not matched
*/
static int parse_identifier(struct Sieve *filter, const uschar *id)
{
size_t idlen=Ustrlen(id);
if (strncmpic(US filter->pc,US id,idlen)==0)
{
uschar next=filter->pc[idlen];
if ((next>='A' && next<='Z') || (next>='a' && next<='z') || next=='_' || (next>='0' && next<='9')) return 0;
filter->pc+=idlen;
return 1;
}
else return 0;
}
/*************************************************
* Parse a number *
*************************************************/
/*
Token definition:
number = 1*DIGIT [QUANTIFIER]
QUANTIFIER = "K" / "M" / "G"
Arguments:
filter points to the Sieve filter including its state
data returns value
Returns: 1 success
-1 no string list found
*/
static int parse_number(struct Sieve *filter, unsigned long *data)
{
unsigned long d,u;
if (*filter->pc>='0' && *filter->pc<='9')
{
uschar *e;
errno=0;
d=Ustrtoul(filter->pc,&e,10);
if (errno==ERANGE)
{
filter->errmsg=CUstrerror(ERANGE);
return -1;
}
filter->pc=e;
u=1;
if (*filter->pc=='K') { u=1024; ++filter->pc; }
else if (*filter->pc=='M') { u=1024*1024; ++filter->pc; }
else if (*filter->pc=='G') { u=1024*1024*1024; ++filter->pc; }
if (d>(ULONG_MAX/u))
{
filter->errmsg=CUstrerror(ERANGE);
return -1;
}
d*=u;
*data=d;
return 1;
}
else
{
filter->errmsg=CUS "missing number";
return -1;
}
}
/*************************************************
* Parse a string list *
*************************************************/
/*
Grammar:
string-list = "[" string *("," string) "]" / string
Arguments:
filter points to the Sieve filter including its state
data returns string list
Returns: 1 success
-1 no string list found
*/
static int parse_stringlist(struct Sieve *filter, struct String **data)
{
const uschar *orig=filter->pc;
int dataCapacity=0;
int dataLength=0;
struct String *d=(struct String*)0;
int m;
if (*filter->pc=='[') /* string list */
{
++filter->pc;
for (;;)
{
if (parse_white(filter)==-1) goto error;
if ((dataLength+1)>=dataCapacity) /* increase buffer */
{
struct String *new;
int newCapacity; /* Don't amalgamate with next line; some compilers grumble */
newCapacity=dataCapacity?(dataCapacity*=2):(dataCapacity=4);
if ((new=(struct String*)store_get(sizeof(struct String)*newCapacity))==(struct String*)0)
{
filter->errmsg=CUstrerror(errno);
goto error;
}
if (d) memcpy(new,d,sizeof(struct String)*dataLength);
d=new;
dataCapacity=newCapacity;
}
m=parse_string(filter,&d[dataLength]);
if (m==0)
{
if (dataLength==0) break;
else
{
filter->errmsg=CUS "missing string";
goto error;
}
}
else if (m==-1) goto error;
else ++dataLength;
if (parse_white(filter)==-1) goto error;
if (*filter->pc==',') ++filter->pc;
else break;
}
if (*filter->pc==']')
{
d[dataLength].character=(uschar*)0;
d[dataLength].length=-1;
++filter->pc;
*data=d;
return 1;
}
else
{
filter->errmsg=CUS "missing closing bracket";
goto error;
}
}
else /* single string */
{
if ((d=store_get(sizeof(struct String)*2))==(struct String*)0)
{
return -1;
}
m=parse_string(filter,&d[0]);
if (m==-1)
{
return -1;
}
else if (m==0)
{
filter->pc=orig;
return 0;
}
else
{
d[1].character=(uschar*)0;
d[1].length=-1;
*data=d;
return 1;
}
}
error:
filter->errmsg=CUS "missing string list";
return -1;
}
/*************************************************
* Parse an optional address part specifier *
*************************************************/
/*
Grammar:
address-part = ":localpart" / ":domain" / ":all"
address-part =/ ":user" / ":detail"
Arguments:
filter points to the Sieve filter including its state
a returns address part specified
Returns: 1 success
0 no comparator found
-1 syntax error
*/
static int parse_addresspart(struct Sieve *filter, enum AddressPart *a)
{
#ifdef SUBADDRESS
if (parse_identifier(filter,CUS ":user")==1)
{
if (!filter->require_subaddress)
{
filter->errmsg=CUS "missing previous require \"subaddress\";";
return -1;
}
*a=ADDRPART_USER;
return 1;
}
else if (parse_identifier(filter,CUS ":detail")==1)
{
if (!filter->require_subaddress)
{
filter->errmsg=CUS "missing previous require \"subaddress\";";
return -1;
}
*a=ADDRPART_DETAIL;
return 1;
}
else
#endif
if (parse_identifier(filter,CUS ":localpart")==1)
{
*a=ADDRPART_LOCALPART;
return 1;
}
else if (parse_identifier(filter,CUS ":domain")==1)
{
*a=ADDRPART_DOMAIN;
return 1;
}
else if (parse_identifier(filter,CUS ":all")==1)
{
*a=ADDRPART_ALL;
return 1;
}
else return 0;
}
/*************************************************
* Parse an optional comparator *
*************************************************/
/*
Grammar:
comparator = ":comparator" <comparator-name: string>
Arguments:
filter points to the Sieve filter including its state
c returns comparator
Returns: 1 success
0 no comparator found
-1 incomplete comparator found
*/
static int parse_comparator(struct Sieve *filter, enum Comparator *c)
{
struct String comparator_name;
if (parse_identifier(filter,CUS ":comparator")==0) return 0;
if (parse_white(filter)==-1) return -1;
switch (parse_string(filter,&comparator_name))
{
case -1: return -1;
case 0:
{
filter->errmsg=CUS "missing comparator";
return -1;
}
default:
{
int match;
if (eq_asciicase(&comparator_name,&str_ioctet,0))
{
*c=COMP_OCTET;
match=1;
}
else if (eq_asciicase(&comparator_name,&str_iascii_casemap,0))
{
*c=COMP_EN_ASCII_CASEMAP;
match=1;
}
else if (eq_asciicase(&comparator_name,&str_enascii_casemap,0))
{
*c=COMP_EN_ASCII_CASEMAP;
match=1;
}
else if (eq_asciicase(&comparator_name,&str_iascii_numeric,0))
{
*c=COMP_ASCII_NUMERIC;
match=1;
}
else
{
filter->errmsg=CUS "invalid comparator";
match=-1;
}
return match;
}
}
}
/*************************************************
* Parse an optional match type *
*************************************************/
/*
Grammar:
match-type = ":is" / ":contains" / ":matches"
Arguments:
filter points to the Sieve filter including its state
m returns match type
Returns: 1 success
0 no match type found
*/
static int parse_matchtype(struct Sieve *filter, enum MatchType *m)
{
if (parse_identifier(filter,CUS ":is")==1)
{
*m=MATCH_IS;
return 1;
}
else if (parse_identifier(filter,CUS ":contains")==1)
{
*m=MATCH_CONTAINS;
return 1;
}
else if (parse_identifier(filter,CUS ":matches")==1)
{
*m=MATCH_MATCHES;
return 1;
}
else return 0;
}
/*************************************************
* Parse and interpret an optional test list *
*************************************************/
/*
Grammar:
test-list = "(" test *("," test) ")"
Arguments:
filter points to the Sieve filter including its state
n total number of tests
true number of passed tests
exec Execute parsed statements
Returns: 1 success
0 no test list found
-1 syntax or execution error
*/
static int parse_testlist(struct Sieve *filter, int *n, int *num_true, int exec)
{
if (parse_white(filter)==-1) return -1;
if (*filter->pc=='(')
{
++filter->pc;
*n=0;
*num_true=0;
for (;;)
{
int cond;
switch (parse_test(filter,&cond,exec))
{
case -1: return -1;
case 0: filter->errmsg=CUS "missing test"; return -1;
default: ++*n; if (cond) ++*num_true; break;
}
if (parse_white(filter)==-1) return -1;
if (*filter->pc==',') ++filter->pc;
else break;
}
if (*filter->pc==')')
{
++filter->pc;
return 1;
}
else
{
filter->errmsg=CUS "missing closing paren";
return -1;
}
}
else return 0;
}
/*************************************************
* Parse and interpret an optional test *
*************************************************/
/*
Arguments:
filter points to the Sieve filter including its state
cond returned condition status
exec Execute parsed statements
Returns: 1 success
0 no test found
-1 syntax or execution error
*/
static int parse_test(struct Sieve *filter, int *cond, int exec)
{
if (parse_white(filter)==-1) return -1;
if (parse_identifier(filter,CUS "address"))
{
/*
address-test = "address" { [address-part] [comparator] [match-type] }
<header-list: string-list> <key-list: string-list>
header-list From, To, Cc, Bcc, Sender, Resent-From, Resent-To
*/
enum AddressPart addressPart=ADDRPART_ALL;
enum Comparator comparator=COMP_EN_ASCII_CASEMAP;
enum MatchType matchType=MATCH_IS;
struct String *hdr,*h,*key,*k;
int m;
int ap=0,co=0,mt=0;
for (;;)
{
if (parse_white(filter)==-1) return -1;
if ((m=parse_addresspart(filter,&addressPart))!=0)
{
if (m==-1) return -1;
if (ap)
{
filter->errmsg=CUS "address part already specified";
return -1;
}
else ap=1;
}
else if ((m=parse_comparator(filter,&comparator))!=0)
{
if (m==-1) return -1;
if (co)
{
filter->errmsg=CUS "comparator already specified";
return -1;
}
else co=1;
}
else if ((m=parse_matchtype(filter,&matchType))!=0)
{
if (m==-1) return -1;
if (mt)
{
filter->errmsg=CUS "match type already specified";
return -1;
}
else mt=1;
}
else break;
}
if (parse_white(filter)==-1) return -1;
if ((m=parse_stringlist(filter,&hdr))!=1)
{
if (m==0) filter->errmsg=CUS "header string list expected";
return -1;
}
if (parse_white(filter)==-1) return -1;
if ((m=parse_stringlist(filter,&key))!=1)
{
if (m==0) filter->errmsg=CUS "key string list expected";
return -1;
}
*cond=0;
for (h=hdr; h->length!=-1 && !*cond; ++h)
{
uschar *header_value=(uschar*)0,*extracted_addr,*end_addr;
if
(
!eq_asciicase(h,&str_from,0)
&& !eq_asciicase(h,&str_to,0)
&& !eq_asciicase(h,&str_cc,0)
&& !eq_asciicase(h,&str_bcc,0)
&& !eq_asciicase(h,&str_sender,0)
&& !eq_asciicase(h,&str_resent_from,0)
&& !eq_asciicase(h,&str_resent_to,0)
)
{
filter->errmsg=CUS "invalid header field";
return -1;
}
if (exec)
{
/* We are only interested in addresses below, so no MIME decoding */
header_value=expand_string(string_sprintf("$rheader_%s",quote(h)));
if (header_value == NULL)
{
filter->errmsg=CUS "header string expansion failed";
return -1;
}
parse_allow_group = TRUE;
while (*header_value && !*cond)
{
uschar *error;
int start, end, domain;
int saveend;
uschar *part=NULL;
end_addr = parse_find_address_end(header_value, FALSE);
saveend = *end_addr;
*end_addr = 0;
extracted_addr = parse_extract_address(header_value, &error, &start, &end, &domain, FALSE);
if (extracted_addr) switch (addressPart)
{
case ADDRPART_ALL: part=extracted_addr; break;
#ifdef SUBADDRESS
case ADDRPART_USER:
#endif
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; break;
#endif
}
*end_addr = saveend;
if (part)
{
for (k=key; k->length!=-1; ++k)
{
struct String partStr;
partStr.character=part;
partStr.length=Ustrlen(part);
if (extracted_addr)
{
*cond=compare(filter,k,&partStr,comparator,matchType);
if (*cond==-1) return -1;
if (*cond) break;
}
}
}
if (saveend == 0) break;
header_value = end_addr + 1;
}
parse_allow_group = FALSE;
parse_found_group = FALSE;
}
}
return 1;
}
else if (parse_identifier(filter,CUS "allof"))
{
/*
allof-test = "allof" <tests: test-list>
*/
int n,num_true;
switch (parse_testlist(filter,&n,&num_true,exec))
{
case -1: return -1;
case 0: filter->errmsg=CUS "missing test list"; return -1;
default: *cond=(n==num_true); return 1;
}
}
else if (parse_identifier(filter,CUS "anyof"))
{
/*
anyof-test = "anyof" <tests: test-list>
*/
int n,num_true;
switch (parse_testlist(filter,&n,&num_true,exec))
{
case -1: return -1;
case 0: filter->errmsg=CUS "missing test list"; return -1;
default: *cond=(num_true>0); return 1;
}
}
else if (parse_identifier(filter,CUS "exists"))
{
/*
exists-test = "exists" <header-names: string-list>
*/
struct String *hdr,*h;
int m;
if (parse_white(filter)==-1) return -1;
if ((m=parse_stringlist(filter,&hdr))!=1)
{
if (m==0) filter->errmsg=CUS "header string list expected";
return -1;
}
if (exec)
{
*cond=1;
for (h=hdr; h->length!=-1 && *cond; ++h)
{
uschar *header_def;
header_def=expand_string(string_sprintf("${if def:header_%s {true}{false}}",quote(h)));
if (header_def == NULL)
{
filter->errmsg=CUS "header string expansion failed";
return -1;
}
if (Ustrcmp(header_def,"false")==0) *cond=0;
}
}
return 1;
}
else if (parse_identifier(filter,CUS "false"))
{
/*
false-test = "false"
*/
*cond=0;
return 1;
}
else if (parse_identifier(filter,CUS "header"))
{
/*
header-test = "header" { [comparator] [match-type] }
<header-names: string-list> <key-list: string-list>
*/
enum Comparator comparator=COMP_EN_ASCII_CASEMAP;
enum MatchType matchType=MATCH_IS;
struct String *hdr,*h,*key,*k;
int m;
int co=0,mt=0;
for (;;)
{
if (parse_white(filter)==-1) return -1;
if ((m=parse_comparator(filter,&comparator))!=0)
{
if (m==-1) return -1;
if (co)
{
filter->errmsg=CUS "comparator already specified";
return -1;
}
else co=1;
}
else if ((m=parse_matchtype(filter,&matchType))!=0)
{
if (m==-1) return -1;
if (mt)
{
filter->errmsg=CUS "match type already specified";
return -1;
}
else mt=1;
}
else break;
}
if (parse_white(filter)==-1) return -1;
if ((m=parse_stringlist(filter,&hdr))!=1)
{
if (m==0) filter->errmsg=CUS "header string list expected";
return -1;
}
if (parse_white(filter)==-1) return -1;
if ((m=parse_stringlist(filter,&key))!=1)
{
if (m==0) filter->errmsg=CUS "key string list expected";
return -1;
}
*cond=0;
for (h=hdr; h->length!=-1 && !*cond; ++h)
{
if (!is_header(h))
{
filter->errmsg=CUS "invalid header field";
return -1;
}
if (exec)
{
struct String header_value;
uschar *header_def;
expand_header(&header_value,h);
header_def=expand_string(string_sprintf("${if def:header_%s {true}{false}}",quote(h)));
if (header_value.character == NULL || header_def == NULL)
{
filter->errmsg=CUS "header string expansion failed";
return -1;
}
for (k=key; k->length!=-1; ++k)
{
if (Ustrcmp(header_def,"true")==0)
{
*cond=compare(filter,k,&header_value,comparator,matchType);
if (*cond==-1) return -1;
if (*cond) break;
}
}
}
}
return 1;
}
else if (parse_identifier(filter,CUS "not"))
{
if (parse_white(filter)==-1) return -1;
switch (parse_test(filter,cond,exec))
{
case -1: return -1;
case 0: filter->errmsg=CUS "missing test"; return -1;
default: *cond=!*cond; return 1;
}
}
else if (parse_identifier(filter,CUS "size"))
{
/*
relop = ":over" / ":under"
size-test = "size" relop <limit: number>
*/
unsigned long limit;
int overNotUnder;
if (parse_white(filter)==-1) return -1;
if (parse_identifier(filter,CUS ":over")) overNotUnder=1;
else if (parse_identifier(filter,CUS ":under")) overNotUnder=0;
else
{
filter->errmsg=CUS "missing :over or :under";
return -1;
}
if (parse_white(filter)==-1) return -1;
if (parse_number(filter,&limit)==-1) return -1;
*cond=(overNotUnder ? (message_size>limit) : (message_size<limit));
return 1;
}
else if (parse_identifier(filter,CUS "true"))
{
*cond=1;
return 1;
}
else if (parse_identifier(filter,CUS "envelope"))
{
/*
envelope-test = "envelope" { [comparator] [address-part] [match-type] }
<envelope-part: string-list> <key-list: string-list>
envelope-part is case insensitive "from" or "to"
#ifdef ENVELOPE_AUTH
envelope-part =/ "auth"
#endif
*/
enum Comparator comparator=COMP_EN_ASCII_CASEMAP;
enum AddressPart addressPart=ADDRPART_ALL;
enum MatchType matchType=MATCH_IS;
struct String *env,*e,*key,*k;
int m;
int co=0,ap=0,mt=0;
if (!filter->require_envelope)
{
filter->errmsg=CUS "missing previous require \"envelope\";";
return -1;
}
for (;;)
{
if (parse_white(filter)==-1) return -1;
if ((m=parse_comparator(filter,&comparator))!=0)
{
if (m==-1) return -1;
if (co)
{
filter->errmsg=CUS "comparator already specified";
return -1;
}
else co=1;
}
else if ((m=parse_addresspart(filter,&addressPart))!=0)
{
if (m==-1) return -1;
if (ap)
{
filter->errmsg=CUS "address part already specified";
return -1;
}
else ap=1;
}
else if ((m=parse_matchtype(filter,&matchType))!=0)
{
if (m==-1) return -1;
if (mt)
{
filter->errmsg=CUS "match type already specified";
return -1;
}
else mt=1;
}
else break;
}
if (parse_white(filter)==-1) return -1;
if ((m=parse_stringlist(filter,&env))!=1)
{
if (m==0) filter->errmsg=CUS "envelope string list expected";
return -1;
}
if (parse_white(filter)==-1) return -1;
if ((m=parse_stringlist(filter,&key))!=1)
{
if (m==0) filter->errmsg=CUS "key string list expected";
return -1;
}
*cond=0;
for (e=env; e->length!=-1 && !*cond; ++e)
{
const uschar *envelopeExpr=CUS 0;
uschar *envelope=US 0;
if (eq_asciicase(e,&str_from,0))
{
switch (addressPart)
{
case ADDRPART_ALL: envelopeExpr=CUS "$sender_address"; break;
#ifdef SUBADDRESS
case ADDRPART_USER:
#endif
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;
#endif
}
}
else if (eq_asciicase(e,&str_to,0))
{
switch (addressPart)
{
case ADDRPART_ALL: envelopeExpr=CUS "$local_part_prefix$local_part$local_part_suffix@$domain"; break;
#ifdef SUBADDRESS
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;
}
}
#ifdef ENVELOPE_AUTH
else if (eq_asciicase(e,&str_auth,0))
{
switch (addressPart)
{
case ADDRPART_ALL: envelopeExpr=CUS "$authenticated_sender"; break;
#ifdef SUBADDRESS
case ADDRPART_USER:
#endif
case ADDRPART_LOCALPART: envelopeExpr=CUS "${local_part:$authenticated_sender}"; break;
case ADDRPART_DOMAIN: envelopeExpr=CUS "${domain:$authenticated_sender}"; break;
#ifdef SUBADDRESS
case ADDRPART_DETAIL: envelopeExpr=CUS 0; break;
#endif
}
}
#endif
else
{
filter->errmsg=CUS "invalid envelope string";
return -1;
}
if (exec && envelopeExpr)
{
if ((envelope=expand_string(US envelopeExpr)) == NULL)
{
filter->errmsg=CUS "header string expansion failed";
return -1;
}
for (k=key; k->length!=-1; ++k)
{
struct String envelopeStr;
envelopeStr.character=envelope;
envelopeStr.length=Ustrlen(envelope);
*cond=compare(filter,k,&envelopeStr,comparator,matchType);
if (*cond==-1) return -1;
if (*cond) break;
}
}
}
return 1;
}
#ifdef ENOTIFY
else if (parse_identifier(filter,CUS "valid_notify_method"))
{
/*
valid_notify_method = "valid_notify_method"
<notification-uris: string-list>
*/
struct String *uris,*u;
int m;
if (!filter->require_enotify)
{
filter->errmsg=CUS "missing previous require \"enotify\";";
return -1;
}
if (parse_white(filter)==-1) return -1;
if ((m=parse_stringlist(filter,&uris))!=1)
{
if (m==0) filter->errmsg=CUS "URI string list expected";
return -1;
}
if (exec)
{
*cond=1;
for (u=uris; u->length!=-1 && *cond; ++u)
{
string_item *recipient;
struct String header,subject,body;
recipient=NULL;
header.length=-1;
header.character=(uschar*)0;
subject.length=-1;
subject.character=(uschar*)0;
body.length=-1;
body.character=(uschar*)0;
if (parse_mailto_uri(filter,u->character,&recipient,&header,&subject,&body)!=1)
*cond=0;
}
}
return 1;
}
else if (parse_identifier(filter,CUS "notify_method_capability"))
{
/*
notify_method_capability = "notify_method_capability" [COMPARATOR] [MATCH-TYPE]
<notification-uri: string>
<notification-capability: string>
<key-list: string-list>
*/
int m;
int co=0,mt=0;
enum Comparator comparator=COMP_EN_ASCII_CASEMAP;
enum MatchType matchType=MATCH_IS;
struct String uri,capa,*keys,*k;
if (!filter->require_enotify)
{
filter->errmsg=CUS "missing previous require \"enotify\";";
return -1;
}
for (;;)
{
if (parse_white(filter)==-1) return -1;
if ((m=parse_comparator(filter,&comparator))!=0)
{
if (m==-1) return -1;
if (co)
{
filter->errmsg=CUS "comparator already specified";
return -1;
}
else co=1;
}
else if ((m=parse_matchtype(filter,&matchType))!=0)
{
if (m==-1) return -1;
if (mt)
{
filter->errmsg=CUS "match type already specified";
return -1;
}
else mt=1;
}
else break;
}
if ((m=parse_string(filter,&uri))!=1)
{
if (m==0) filter->errmsg=CUS "missing notification URI string";
return -1;
}
if (parse_white(filter)==-1) return -1;
if ((m=parse_string(filter,&capa))!=1)
{
if (m==0) filter->errmsg=CUS "missing notification capability string";
return -1;
}
if (parse_white(filter)==-1) return -1;
if ((m=parse_stringlist(filter,&keys))!=1)
{
if (m==0) filter->errmsg=CUS "missing key string list";
return -1;
}
if (exec)
{
string_item *recipient;
struct String header,subject,body;
*cond=0;
recipient=NULL;
header.length=-1;
header.character=(uschar*)0;
subject.length=-1;
subject.character=(uschar*)0;
body.length=-1;
body.character=(uschar*)0;
if (parse_mailto_uri(filter,uri.character,&recipient,&header,&subject,&body)==1)
{
if (eq_asciicase(&capa,&str_online,0)==1)
for (k=keys; k->length!=-1; ++k)
{
*cond=compare(filter,k,&str_maybe,comparator,matchType);
if (*cond==-1) return -1;
if (*cond) break;
}
}
}
return 1;
}
#endif
else return 0;
}
/*************************************************
* Parse and interpret an optional block *
*************************************************/
/*
Arguments:
filter points to the Sieve filter including its state
exec Execute parsed statements
generated where to hang newly-generated addresses
Returns: 2 success by stop
1 other success
0 no block command found
-1 syntax or execution error
*/
static int parse_block(struct Sieve *filter, int exec,
address_item **generated)
{
int r;
if (parse_white(filter)==-1) return -1;
if (*filter->pc=='{')
{
++filter->pc;
if ((r=parse_commands(filter,exec,generated))==-1 || r==2) return r;
if (*filter->pc=='}')
{
++filter->pc;
return 1;
}
else
{
filter->errmsg=CUS "expecting command or closing brace";
return -1;
}
}
else return 0;
}
/*************************************************
* Match a semicolon *
*************************************************/
/*
Arguments:
filter points to the Sieve filter including its state
Returns: 1 success
-1 syntax error
*/
static int parse_semicolon(struct Sieve *filter)
{
if (parse_white(filter)==-1) return -1;
if (*filter->pc==';')
{
++filter->pc;
return 1;
}
else
{
filter->errmsg=CUS "missing semicolon";
return -1;
}
}
/*************************************************
* Parse and interpret a Sieve command *
*************************************************/
/*
Arguments:
filter points to the Sieve filter including its state
exec Execute parsed statements
generated where to hang newly-generated addresses
Returns: 2 success by stop
1 other success
-1 syntax or execution error
*/
static int parse_commands(struct Sieve *filter, int exec,
address_item **generated)
{
while (*filter->pc)
{
if (parse_white(filter)==-1) return -1;
if (parse_identifier(filter,CUS "if"))
{
/*
if-command = "if" test block *( "elsif" test block ) [ else block ]
*/
int cond,m,unsuccessful;
/* test block */
if (parse_white(filter)==-1) return -1;
if ((m=parse_test(filter,&cond,exec))==-1) return -1;
if (m==0)
{
filter->errmsg=CUS "missing test";
return -1;
}
if ((filter_test != FTEST_NONE && debug_selector != 0) ||
(debug_selector & D_filter) != 0)
{
if (exec) debug_printf("if %s\n",cond?"true":"false");
}
m=parse_block(filter,exec ? cond : 0, generated);
if (m==-1 || m==2) return m;
if (m==0)
{
filter->errmsg=CUS "missing block";
return -1;
}
unsuccessful = !cond;
for (;;) /* elsif test block */
{
if (parse_white(filter)==-1) return -1;
if (parse_identifier(filter,CUS "elsif"))
{
if (parse_white(filter)==-1) return -1;
m=parse_test(filter,&cond,exec && unsuccessful);
if (m==-1 || m==2) return m;
if (m==0)
{
filter->errmsg=CUS "missing test";
return -1;
}
if ((filter_test != FTEST_NONE && debug_selector != 0) ||
(debug_selector & D_filter) != 0)
{
if (exec) debug_printf("elsif %s\n",cond?"true":"false");
}
m=parse_block(filter,exec && unsuccessful ? cond : 0, generated);
if (m==-1 || m==2) return m;
if (m==0)
{
filter->errmsg=CUS "missing block";
return -1;
}
if (exec && unsuccessful && cond) unsuccessful = 0;
}
else break;
}
/* else block */
if (parse_white(filter)==-1) return -1;
if (parse_identifier(filter,CUS "else"))
{
m=parse_block(filter,exec && unsuccessful, generated);
if (m==-1 || m==2) return m;
if (m==0)
{
filter->errmsg=CUS "missing block";
return -1;
}
}
}
else if (parse_identifier(filter,CUS "stop"))
{
/*
stop-command = "stop" { stop-options } ";"
stop-options =
*/
if (parse_semicolon(filter)==-1) return -1;
if (exec)
{
filter->pc+=Ustrlen(filter->pc);
return 2;
}
}
else if (parse_identifier(filter,CUS "keep"))
{
/*
keep-command = "keep" { keep-options } ";"
keep-options =
*/
if (parse_semicolon(filter)==-1) return -1;
if (exec)
{
add_addr(generated,US"inbox",1,0,0,0);
filter->keep = 0;
}
}
else if (parse_identifier(filter,CUS "discard"))
{
/*
discard-command = "discard" { discard-options } ";"
discard-options =
*/
if (parse_semicolon(filter)==-1) return -1;
if (exec) filter->keep=0;
}
else if (parse_identifier(filter,CUS "redirect"))
{
/*
redirect-command = "redirect" redirect-options "string" ";"
redirect-options =
redirect-options =) ":copy"
*/
struct String recipient;
int m;
int copy=0;
for (;;)
{
if (parse_white(filter)==-1) return -1;
if (parse_identifier(filter,CUS ":copy")==1)
{
if (!filter->require_copy)
{
filter->errmsg=CUS "missing previous require \"copy\";";
return -1;
}
copy=1;
}
else break;
}
if (parse_white(filter)==-1) return -1;
if ((m=parse_string(filter,&recipient))!=1)
{
if (m==0) filter->errmsg=CUS "missing redirect recipient string";
return -1;
}
if (strchr(CCS recipient.character,'@')==(char*)0)
{
filter->errmsg=CUS "unqualified recipient address";
return -1;
}
if (exec)
{
add_addr(generated,recipient.character,0,0,0,0);
if (!copy) filter->keep = 0;
}
if (parse_semicolon(filter)==-1) return -1;
}
else if (parse_identifier(filter,CUS "fileinto"))
{
/*
fileinto-command = "fileinto" { fileinto-options } string ";"
fileinto-options =
fileinto-options =) [ ":copy" ]
*/
struct String folder;
uschar *s;
int m;
unsigned long maxage, maxmessages, maxstorage;
int copy=0;
maxage = maxmessages = maxstorage = 0;
if (!filter->require_fileinto)
{
filter->errmsg=CUS "missing previous require \"fileinto\";";
return -1;
}
for (;;)
{
if (parse_white(filter)==-1) return -1;
if (parse_identifier(filter,CUS ":copy")==1)
{
if (!filter->require_copy)
{
filter->errmsg=CUS "missing previous require \"copy\";";
return -1;
}
copy=1;
}
else break;
}
if (parse_white(filter)==-1) return -1;
if ((m=parse_string(filter,&folder))!=1)
{
if (m==0) filter->errmsg=CUS "missing fileinto folder string";
return -1;
}
m=0; s=folder.character;
if (folder.length==0) m=1;
if (Ustrcmp(s,"..")==0 || Ustrncmp(s,"../",3)==0) m=1;
else while (*s)
{
if (Ustrcmp(s,"/..")==0 || Ustrncmp(s,"/../",4)==0) { m=1; break; }
++s;
}
if (m)
{
filter->errmsg=CUS "invalid folder";
return -1;
}
if (exec)
{
add_addr(generated, folder.character, 1, maxage, maxmessages, maxstorage);
if (!copy) filter->keep = 0;
}
if (parse_semicolon(filter)==-1) return -1;
}
#ifdef ENOTIFY
else if (parse_identifier(filter,CUS "notify"))
{
/*
notify-command = "notify" { notify-options } <method: string> ";"
notify-options = [":from" string]
[":importance" <"1" / "2" / "3">]
[":options" 1*(string-list / number)]
[":message" string]
*/
int m;
struct String from;
struct String importance;
struct String *options;
struct String message;
struct String method;
struct Notification *already;
string_item *recipient;
struct String header;
struct String subject;
struct String body;
uschar *envelope_from,*envelope_to;
struct String auto_submitted_value;
uschar *auto_submitted_def;
if (!filter->require_enotify)
{
filter->errmsg=CUS "missing previous require \"enotify\";";
return -1;
}
from.character=(uschar*)0;
from.length=-1;
importance.character=(uschar*)0;
importance.length=-1;
options=(struct String*)0;
message.character=(uschar*)0;
message.length=-1;
recipient=NULL;
header.length=-1;
header.character=(uschar*)0;
subject.length=-1;
subject.character=(uschar*)0;
body.length=-1;
body.character=(uschar*)0;
envelope_from=expand_string("$sender_address");
envelope_to=expand_string("$local_part_prefix$local_part$local_part_suffix@$domain");
for (;;)
{
if (parse_white(filter)==-1) return -1;
if (parse_identifier(filter,CUS ":from")==1)
{
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;
}
}
else if (parse_identifier(filter,CUS ":importance")==1)
{
if (parse_white(filter)==-1) return -1;
if ((m=parse_string(filter,&importance))!=1)
{
if (m==0) filter->errmsg=CUS "importance string expected";
return -1;
}
if (importance.length!=1 || importance.character[0]<'1' || importance.character[0]>'3')
{
filter->errmsg=CUS "invalid importance";
return -1;
}
}
else if (parse_identifier(filter,CUS ":options")==1)
{
if (parse_white(filter)==-1) return -1;
}
else if (parse_identifier(filter,CUS ":message")==1)
{
if (parse_white(filter)==-1) return -1;
if ((m=parse_string(filter,&message))!=1)
{
if (m==0) filter->errmsg=CUS "message string expected";
return -1;
}
}
else break;
}
if (parse_white(filter)==-1) return -1;
if ((m=parse_string(filter,&method))!=1)
{
if (m==0) filter->errmsg=CUS "missing method string";
return -1;
}
if (parse_semicolon(filter)==-1) return -1;
if (parse_mailto_uri(filter,method.character,&recipient,&header,&subject,&body)!=1)
return -1;
if (message.length==-1) message=subject;
if (message.length==-1) expand_header(&message,&str_subject);
expand_header(&auto_submitted_value,&str_auto_submitted);
auto_submitted_def=expand_string(string_sprintf("${if def:header_auto-submitted {true}{false}}"));
if (auto_submitted_value.character == NULL || auto_submitted_def == NULL)
{
filter->errmsg=CUS "header string expansion failed";
return -1;
}
if (Ustrcmp(auto_submitted_def,"true")!=0 || Ustrcmp(auto_submitted_value.character,"no")==0)
{
for (already=filter->notified; already; already=already->next)
{
if (already->method.length==method.length
&& (method.length==-1 || strcmp(already->method.character,method.character)==0)
&& already->importance.length==importance.length
&& (importance.length==-1 || strcmp(already->importance.character,importance.character)==0)
&& already->message.length==message.length
&& (message.length==-1 || strcmp(already->message.character,message.character)==0))
break;
}
if (already==(struct Notification*)0)
/* New notification, process it */
{
struct Notification *sent;
sent=store_get(sizeof(struct Notification));
sent->method=method;
sent->importance=importance;
sent->message=message;
sent->next=filter->notified;
filter->notified=sent;
if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
{
debug_printf("Notification to `%s': '%s'.\n",method.character,message.length!=-1 ? message.character : CUS "");
}
#ifndef COMPILE_SYNTAX_CHECKER
if (exec && filter_test == FTEST_NONE)
{
string_item *p;
header_line *h;
int pid,fd;
if ((pid = child_open_exim2(&fd,envelope_to,envelope_to))>=1)
{
FILE *f;
uschar *buffer;
int buffer_capacity;
f = fdopen(fd, "wb");
for (h = header_list; h != NULL; h = h->next)
if (h->type == htype_received) fprintf(f,"%s",h->text);
fprintf(f,"From: %s\n",from.length==-1 ? envelope_to : from.character);
for (p=recipient; p; p=p->next) fprintf(f,"To: %s\n",p->text);
fprintf(f,"Auto-submitted: sieve-notify\n");
if (header.length>0) fprintf(f,"%s",header.character);
if (message.length==-1)
{
message.character=US"Notification";
message.length=Ustrlen(message.character);
}
/* Allocation is larger than neccessary, but enough even for split MIME words */
buffer_capacity=32+4*message.length;
buffer=store_get(buffer_capacity);
if (message.length!=-1) fprintf(f,"Subject: %s\n",parse_quote_2047(message.character, message.length, US"utf-8", buffer, buffer_capacity, TRUE));
fprintf(f,"\n");
if (body.length>0) fprintf(f,"%s\n",body.character);
fflush(f);
(void)fclose(f);
(void)child_close(pid, 0);
}
}
#endif
}
else
{
if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
{
debug_printf("Repeated notification to `%s' ignored.\n",method.character);
}
}
}
else
{
if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
{
debug_printf("Ignoring notification, triggering message contains Auto-submitted: field.\n");
}
}
}
#endif
#ifdef VACATION
else if (parse_identifier(filter,CUS "vacation"))
{
/*
vacation-command = "vacation" { vacation-options } <reason: string> ";"
vacation-options = [":days" number]
[":subject" string]
[":from" string]
[":addresses" string-list]
[":mime"]
[":handle" string]
*/
int m;
unsigned long days;
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)
{
filter->errmsg=CUS "missing previous require \"vacation\";";
return -1;
}
if (exec)
{
if (filter->vacation_ran)
{
filter->errmsg=CUS "trying to execute vacation more than once";
return -1;
}
filter->vacation_ran=1;
}
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;
if (parse_identifier(filter,CUS ":days")==1)
{
if (parse_white(filter)==-1) return -1;
if (parse_number(filter,&days)==-1) return -1;
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)
{
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 (check_mail_address(filter,&from)!=1)
return -1;
}
else if (parse_identifier(filter,CUS ":addresses")==1)
{
struct String *a;
if (parse_white(filter)==-1) return -1;
if ((m=parse_stringlist(filter,&addresses))!=1)
{
if (m==0) filter->errmsg=CUS "addresses string list expected";
return -1;
}
for (a=addresses; a->length!=-1; ++a)
{
string_item *new;
new=store_get(sizeof(string_item));
new->text=store_get(a->length+1);
if (a->length) memcpy(new->text,a->character,a->length);
new->text[a->length]='\0';
new->next=aliases;
aliases=new;
}
}
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,&from))!=1)
{
if (m==0) filter->errmsg=CUS "handle string expected";
return -1;
}
}
else break;
}
if (parse_white(filter)==-1) return -1;
if ((m=parse_string(filter,&reason))!=1)
{
if (m==0) filter->errmsg=CUS "missing reason string";
return -1;
}
if (reason_is_mime)
{
uschar *s,*end;
for (s=reason.character,end=reason.character+reason.length; s<end && (*s&0x80)==0; ++s);
if (s<end)
{
filter->errmsg=CUS "MIME reason string contains 8bit text";
return -1;
}
}
if (parse_semicolon(filter)==-1) return -1;
if (exec)
{
address_item *addr;
int capacity,start;
uschar *buffer;
int buffer_capacity;
struct String key;
md5 base;
uschar digest[16];
uschar hexdigest[33];
int i;
uschar *once;
if (filter_personal(aliases,TRUE))
{
if (filter_test == FTEST_NONE)
{
/* ensure oncelog directory exists; failure will be detected later */
(void)directory_make(NULL, filter->vacation_directory, 0700, FALSE);
}
/* build oncelog filename */
key.character=(uschar*)0;
key.length=0;
capacity=0;
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]);
if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
{
debug_printf("Sieve: mail was personal, vacation file basename: %s\n", hexdigest);
}
if (filter_test == FTEST_NONE)
{
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)
{
uschar *subject_def;
subject_def=expand_string(US"${if def:header_subject {true}{false}}");
if (Ustrcmp(subject_def,"true")==0)
{
expand_header(&subject,&str_subject);
capacity=6;
start=6;
subject.character=string_cat(US"Auto: ",&capacity,&start,subject.character,subject.length);
subject.length=start;
}
else
{
subject.character=US"Automated reply";
subject.length=Ustrlen(subject.character);
}
}
/* 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=32+4*subject.length;
buffer=store_get(buffer_capacity);
addr->reply->subject=parse_quote_2047(subject.character, subject.length, US"utf-8", buffer, buffer_capacity, TRUE);
addr->reply->oncelog=once;
addr->reply->once_repeat=days*86400;
/* build body and MIME headers */
if (reason_is_mime)
{
uschar *mime_body,*reason_end;
static const uschar nlnl[]="\r\n\r\n";
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 = { NULL, 0 }; /* Keep compiler happy (PH) */
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 if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0)
{
debug_printf("Sieve: mail was not personal, vacation would ignore it\n");
}
}
}
else break;
#endif
}
return 1;
}
/*************************************************
* Parse and interpret a sieve filter *
*************************************************/
/*
Arguments:
filter points to the Sieve filter including its state
exec Execute parsed statements
generated where to hang newly-generated addresses
Returns: 1 success
-1 syntax or execution error
*/
static int parse_start(struct Sieve *filter, int exec,
address_item **generated)
{
filter->pc=filter->filter;
filter->line=1;
filter->keep=1;
filter->require_envelope=0;
filter->require_fileinto=0;
#ifdef ENCODED_CHARACTER
filter->require_encoded_character=0;
#endif
#ifdef ENVELOPE_AUTH
filter->require_envelope_auth=0;
#endif
#ifdef ENOTIFY
filter->require_enotify=0;
filter->notified=(struct Notification*)0;
#endif
#ifdef SUBADDRESS
filter->require_subaddress=0;
#endif
#ifdef VACATION
filter->require_vacation=0;
filter->vacation_ran=0;
#endif
filter->require_copy=0;
filter->require_iascii_numeric=0;
if (parse_white(filter)==-1) return -1;
if (exec && filter->vacation_directory != NULL && filter_test == FTEST_NONE)
{
DIR *oncelogdir;
struct dirent *oncelog;
struct stat properties;
time_t now;
/* clean up old vacation log databases */
oncelogdir=opendir(CS filter->vacation_directory);
if (oncelogdir ==(DIR*)0 && errno != ENOENT)
{
filter->errmsg=CUS "unable to open vacation directory";
return -1;
}
if (oncelogdir != NULL)
{
time(&now);
while ((oncelog=readdir(oncelogdir))!=(struct dirent*)0)
{
if (strlen(oncelog->d_name)==32)
{
uschar *s=string_sprintf("%s/%s",filter->vacation_directory,oncelog->d_name);
if (Ustat(s,&properties)==0 && (properties.st_mtime+VACATION_MAX_DAYS*86400)<now)
Uunlink(s);
}
}
closedir(oncelogdir);
}
}
while (parse_identifier(filter,CUS "require"))
{
/*
require-command = "require" <capabilities: string-list>
*/
struct String *cap,*check;
int m;
if (parse_white(filter)==-1) return -1;
if ((m=parse_stringlist(filter,&cap))!=1)
{
if (m==0) filter->errmsg=CUS "capability string list expected";
return -1;
}
for (check=cap; check->character; ++check)
{
if (eq_octet(check,&str_envelope,0)) filter->require_envelope=1;
else if (eq_octet(check,&str_fileinto,0)) filter->require_fileinto=1;
#ifdef ENCODED_CHARACTER
else if (eq_octet(check,&str_encoded_character,0)) filter->require_encoded_character=1;
#endif
#ifdef ENVELOPE_AUTH
else if (eq_octet(check,&str_envelope_auth,0)) filter->require_envelope_auth=1;
#endif
#ifdef ENOTIFY
else if (eq_octet(check,&str_enotify,0)) filter->require_enotify=1;
#endif
#ifdef SUBADDRESS
else if (eq_octet(check,&str_subaddress,0)) filter->require_subaddress=1;
#endif
#ifdef VACATION
else if (eq_octet(check,&str_vacation,0))
{
if (filter_test == FTEST_NONE && filter->vacation_directory == NULL)
{
filter->errmsg=CUS "vacation disabled";
return -1;
}
filter->require_vacation=1;
}
#endif
else if (eq_octet(check,&str_copy,0)) filter->require_copy=1;
else if (eq_octet(check,&str_comparator_ioctet,0)) ;
else if (eq_octet(check,&str_comparator_iascii_casemap,0)) ;
else if (eq_octet(check,&str_comparator_enascii_casemap,0)) ;
else if (eq_octet(check,&str_comparator_iascii_numeric,0)) filter->require_iascii_numeric=1;
else
{
filter->errmsg=CUS "unknown capability";
return -1;
}
}
if (parse_semicolon(filter)==-1) return -1;
}
if (parse_commands(filter,exec,generated)==-1) return -1;
if (*filter->pc)
{
filter->errmsg=CUS "syntax error";
return -1;
}
return 1;
}
/*************************************************
* Interpret a sieve filter file *
*************************************************/
/*
Arguments:
filter points to the entire file, read into store as a single string
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
Returns: FF_DELIVERED success, a significant action was taken
FF_NOTDELIVERED success, no significant action
FF_DEFER defer requested
FF_FAIL fail requested
FF_FREEZE freeze requested
FF_ERROR there was a problem
*/
int
sieve_interpret(uschar *filter, int options, uschar *vacation_directory,
uschar *useraddress, uschar *subaddress, address_item **generated, uschar **error)
{
struct Sieve sieve;
int r;
uschar *msg;
options = options; /* Keep picky compilers happy */
error = error;
DEBUG(D_route) debug_printf("Sieve: start of processing\n");
sieve.filter=filter;
if (vacation_directory == NULL)
sieve.vacation_directory = NULL;
else
{
sieve.vacation_directory=expand_string(vacation_directory);
if (sieve.vacation_directory == NULL)
{
*error = string_sprintf("failed to expand \"%s\" "
"(sieve_vacation_directory): %s", vacation_directory,
expand_string_message);
return FF_ERROR;
}
}
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
if (parse_start(&sieve,1,generated)==1)
#endif
{
if (sieve.keep)
{
add_addr(generated,US"inbox",1,0,0,0);
msg = string_sprintf("Implicit keep");
r = FF_DELIVERED;
}
else
{
msg = string_sprintf("No implicit keep");
r = FF_DELIVERED;
}
}
else
{
msg = string_sprintf("Sieve error: %s in line %d",sieve.errmsg,sieve.line);
#ifdef COMPILE_SYNTAX_CHECKER
r = FF_ERROR;
*error = msg;
#else
add_addr(generated,US"inbox",1,0,0,0);
r = FF_DELIVERED;
#endif
}
#ifndef COMPILE_SYNTAX_CHECKER
if (filter_test != FTEST_NONE) printf("%s\n", (const char*) msg);
else debug_printf("%s\n", msg);
#endif
DEBUG(D_route) debug_printf("Sieve: end of processing\n");
return r;
}
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