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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 09:44:07 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 09:44:07 +0000
commit39ce00b8d520cbecbd6af87257e8fb11df0ec273 (patch)
tree4c21a2674c19e5c44be3b3550b476b9e63d8ae3d /src/sieve.c
parentInitial commit. (diff)
downloadexim4-39ce00b8d520cbecbd6af87257e8fb11df0ec273.tar.xz
exim4-39ce00b8d520cbecbd6af87257e8fb11df0ec273.zip
Adding upstream version 4.94.2.upstream/4.94.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/sieve.c')
-rw-r--r--src/sieve.c3638
1 files changed, 3638 insertions, 0 deletions
diff --git a/src/sieve.c b/src/sieve.c
new file mode 100644
index 0000000..2038f33
--- /dev/null
+++ b/src/sieve.c
@@ -0,0 +1,3638 @@
+/*************************************************
+* Exim - an Internet mail transport agent *
+*************************************************/
+
+/* Copyright (c) Michael Haardt 2003 - 2015
+ * Copyright (c) The Exim Maintainers 2016 - 2020
+ * 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
+ uschar *enotify_mailto_owner;
+#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;
+ };
+
+/* This should be a complete list of supported extensions, so that an external
+ManageSieve (RFC 5804) program can interrogate the current Exim binary for the
+list of extensions and provide correct information to a client.
+
+We'll emit the list in the order given here; keep it alphabetically sorted, so
+that callers don't get surprised.
+
+List *MUST* end with a NULL. Which at least makes ifdef-vs-comma easier. */
+
+const uschar *exim_sieve_extension_list[] = {
+ CUS"comparator-i;ascii-numeric",
+ CUS"copy",
+#ifdef ENCODED_CHARACTER
+ CUS"encoded-character",
+#endif
+#ifdef ENOTIFY
+ CUS"enotify",
+#endif
+ CUS"envelope",
+#ifdef ENVELOPE_AUTH
+ CUS"envelope-auth",
+#endif
+ CUS"fileinto",
+#ifdef SUBADDRESS
+ CUS"subaddress",
+#endif
+#ifdef VACATION
+ CUS"vacation",
+#endif
+ NULL
+};
+
+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 };
+#ifdef ENVELOPE_AUTH
+static uschar str_auth_c[]="auth";
+static const struct String str_auth={ str_auth_c, 4 };
+#endif
+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)
+{
+uschar *new = NULL;
+uschar ch;
+size_t line;
+
+/* Two passes: one to count output allocation size, second
+to do the encoding */
+
+for (int pass = 0; pass <= 1; pass++)
+ {
+ line=0;
+ if (pass==0)
+ dst->length=0;
+ else
+ {
+ dst->character = store_get(dst->length+1, is_tainted(src->character)); /* plus one for \0 */
+ new=dst->character;
+ }
+ for (const uschar * start = src->character, * end = start + src->length;
+ start < end; ++start)
+ {
+ ch=*start;
+ if (line>=73) /* line length limit */
+ {
+ if (pass==0)
+ dst->length+=2;
+ else
+ {
+ *new++='='; /* line split */
+ *new++='\n';
+ }
+ line=0;
+ }
+ if ( (ch>='!' && ch<='<')
+ || (ch>='>' && ch<='~')
+ || ( (ch=='\t' || ch==' ')
+ && start+2<end
+ && (*(start+1)!='\r' || *(start+2)!='\n') /* CRLF */
+ )
+ )
+ {
+ if (pass==0)
+ ++dst->length;
+ else
+ *new++=*start; /* copy char */
+ ++line;
+ }
+ else if (ch=='\r' && start+1<end && *(start+1)=='\n') /* CRLF */
+ {
+ if (pass==0)
+ ++dst->length;
+ else
+ *new++='\n'; /* NL */
+ line=0;
+ ++start; /* consume extra input char */
+ }
+ else
+ {
+ if (pass==0)
+ dst->length+=3;
+ else
+ { /* encoded char */
+ new += sprintf(CS new,"=%02X",ch);
+ }
+ 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)
+ {
+ 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;
+struct String hvalue = {.character = NULL, .length = 0};
+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)
+ {
+ gstring * g = string_catn(NULL, start, uri-start);
+
+ to.character = string_from_gstring(g);
+ to.length = g->ptr;
+ if (uri_decode(&to)==-1)
+ {
+ filter->errmsg=US"Invalid URI encoding";
+ return -1;
+ }
+ new=store_get(sizeof(string_item), FALSE);
+ new->text = store_get(to.length+1, is_tainted(to.character));
+ 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("$-_.+!*'(),%",*uri)); ++uri);
+ if (uri>start)
+ {
+ gstring * g = string_catn(NULL, start, uri-start);
+
+ hname.character = string_from_gstring(g);
+ hname.length = g->ptr;
+ if (uri_decode(&hname)==-1)
+ {
+ filter->errmsg=US"Invalid URI encoding";
+ return -1;
+ }
+ }
+ /* match = */
+ if (*uri=='=')
+ ++uri;
+ else
+ {
+ filter->errmsg=US"Missing equal after hname";
+ return -1;
+ }
+ /* match hvalue */
+ for (start=uri; *uri && (isalnum(*uri) || strchr("$-_.+!*'(),%",*uri)); ++uri);
+ if (uri>start)
+ {
+ gstring * g = string_catn(NULL, start, uri-start);
+
+ hname.character = string_from_gstring(g);
+ hname.length = g->ptr;
+ 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), FALSE);
+ new->text = store_get(hvalue.length+1, is_tainted(hvalue.character));
+ 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)
+ {
+ gstring * g;
+
+ if (header->length==-1) header->length = 0;
+
+ g = string_catn(NULL, header->character, header->length);
+ g = string_catn(g, hname.character, hname.length);
+ g = string_catn(g, CUS ": ", 2);
+ g = string_catn(g, hvalue.character, hvalue.length);
+ g = string_catn(g, CUS "\n", 1);
+
+ header->character = string_from_gstring(g);
+ header->length = g->ptr;
+ }
+ }
+ 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
+ ascii_caseless ignore ASCII case
+ match_octet match octets, not UTF-8 multi-octet characters
+
+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)
+{
+gstring * quoted = NULL;
+size_t l;
+const uschar *h;
+
+l=header->length;
+h=header->character;
+while (l)
+ {
+ switch (*h)
+ {
+ case '\0':
+ quoted = string_catn(quoted, CUS "\\0", 2);
+ break;
+ case '$':
+ case '{':
+ case '}':
+ quoted = string_catn(quoted, CUS "\\", 1);
+ default:
+ quoted = string_catn(quoted, h, 1);
+ }
+ ++h;
+ --l;
+ }
+quoted = string_catn(quoted, CUS "", 1);
+return string_from_gstring(quoted);
+}
+
+
+/*************************************************
+* Add address to list of generated addresses *
+*************************************************/
+
+/*
+According to RFC 5228, 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)
+ || testflag(new_addr, af_file)
+ )
+ )
+ {
+ 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);
+ setflag(new_addr, af_file);
+ new_addr->mode = 0;
+ }
+new_addr->prop.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)));
+if (!t) return;
+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)
+{
+gstring * g = NULL;
+
+data->length = 0;
+data->character = NULL;
+
+if (*filter->pc=='"') /* quoted string */
+ {
+ ++filter->pc;
+ while (*filter->pc)
+ {
+ if (*filter->pc=='"') /* end of string */
+ {
+ ++filter->pc;
+
+ if (g)
+ {
+ data->character = string_from_gstring(g);
+ data->length = g->ptr;
+ }
+ else
+ data->character = US"\0";
+ /* that way, there will be at least one character allocated */
+
+#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 */
+ {
+ g = string_catn(g, 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')
+ {
+ g = string_catn(g, US"\r", 1);
+ ++filter->line;
+ }
+#endif
+ g = string_catn(g, 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
+ {
+ g = string_catn(g, 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
+ {
+ if (g)
+ {
+ data->character = string_from_gstring(g);
+ data->length = g->ptr;
+ }
+ else
+ data->character = US"\0";
+ /* that way, there will be at least one character allocated */
+
+#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 */
+ {
+ g = string_catn(g, CUS ".", 1);
+ filter->pc+=2;
+ }
+ }
+ else /* regular character */
+ {
+ g = string_catn(g, 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 = NULL;
+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;
+
+ dataCapacity = dataCapacity ? dataCapacity * 2 : 4;
+ new = store_get(sizeof(struct String) * dataCapacity, FALSE);
+
+ if (d) memcpy(new,d,sizeof(struct String)*dataLength);
+ d = new;
+ }
+
+ 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, FALSE)))
+ 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
+ num_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,*key;
+ 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 (struct String * 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 */
+ if (!(header_value = expand_string(string_sprintf("$rheader_%s",quote(h)))))
+ {
+ filter->errmsg=CUS "header string expansion failed";
+ return -1;
+ }
+ f.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 (struct String * k = key; k->length !=- 1; ++k)
+ {
+ struct String partStr = {.character = part, .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;
+ }
+ f.parse_allow_group = FALSE;
+ f.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;
+ 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 (struct String * 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)
+ {
+ 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,*key;
+ 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 (struct String * 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 || !header_def)
+ {
+ filter->errmsg=CUS "header string expansion failed";
+ return -1;
+ }
+ for (struct String * 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,*key;
+ 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 (struct String * 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)))
+ {
+ filter->errmsg=CUS "header string expansion failed";
+ return -1;
+ }
+ for (struct String * k = key; k->length != -1; ++k)
+ {
+ struct String envelopeStr = {.character = envelope, .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;
+ 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 (struct String * 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;
+
+ 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 (struct String * 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 message;
+ struct String method;
+ struct Notification *already;
+ string_item *recipient;
+ struct String header;
+ struct String subject;
+ struct String body;
+ uschar *envelope_from;
+ 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;
+ 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 = sender_address && sender_address[0]
+ ? expand_string(US"$local_part_prefix$local_part$local_part_suffix@$domain") : US "";
+ if (!envelope_from)
+ {
+ filter->errmsg=CUS "expansion failure for envelope from";
+ return -1;
+ }
+ for (;;)
+ {
+ if (parse_white(filter)==-1) return -1;
+ if (parse_identifier(filter,CUS ":from")==1)
+ {
+ if (parse_white(filter)==-1) return -1;
+ if ((m=parse_string(filter,&from))!=1)
+ {
+ if (m==0) filter->errmsg=CUS "from string expected";
+ return -1;
+ }
+ }
+ else if (parse_identifier(filter,CUS ":importance")==1)
+ {
+ if (parse_white(filter)==-1) return -1;
+ if ((m=parse_string(filter,&importance))!=1)
+ {
+ if (m==0) filter->errmsg=CUS "importance string expected";
+ return -1;
+ }
+ if (importance.length!=1 || importance.character[0]<'1' || importance.character[0]>'3')
+ {
+ filter->errmsg=CUS "invalid importance";
+ return -1;
+ }
+ }
+ else if (parse_identifier(filter,CUS ":options")==1)
+ {
+ if (parse_white(filter)==-1) return -1;
+ }
+ else if (parse_identifier(filter,CUS ":message")==1)
+ {
+ if (parse_white(filter)==-1) return -1;
+ if ((m=parse_string(filter,&message))!=1)
+ {
+ if (m==0) filter->errmsg=CUS "message string expected";
+ return -1;
+ }
+ }
+ else break;
+ }
+ if (parse_white(filter)==-1) return -1;
+ if ((m=parse_string(filter,&method))!=1)
+ {
+ if (m==0) filter->errmsg=CUS "missing method string";
+ return -1;
+ }
+ if (parse_semicolon(filter)==-1) return -1;
+ if (parse_mailto_uri(filter,method.character,&recipient,&header,&subject,&body)!=1)
+ return -1;
+ if (exec)
+ {
+ if (message.length==-1) message=subject;
+ if (message.length==-1) expand_header(&message,&str_subject);
+ expand_header(&auto_submitted_value,&str_auto_submitted);
+ auto_submitted_def=expand_string(US"${if def:header_auto-submitted {true}{false}}");
+ if (!auto_submitted_value.character || !auto_submitted_def)
+ {
+ 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 || Ustrcmp(already->method.character,method.character)==0)
+ && already->importance.length==importance.length
+ && (importance.length==-1 || Ustrcmp(already->importance.character,importance.character)==0)
+ && already->message.length==message.length
+ && (message.length==-1 || Ustrcmp(already->message.character,message.character)==0))
+ break;
+ }
+ if (!already)
+ /* New notification, process it */
+ {
+ struct Notification * sent = store_get(sizeof(struct Notification), FALSE);
+ sent->method=method;
+ sent->importance=importance;
+ sent->message=message;
+ sent->next=filter->notified;
+ filter->notified=sent;
+ #ifndef COMPILE_SYNTAX_CHECKER
+ if (filter_test == FTEST_NONE)
+ {
+ int pid, fd;
+
+ if ((pid = child_open_exim2(&fd, envelope_from, envelope_from,
+ US"sieve-notify")) >= 1)
+ {
+ FILE * f = fdopen(fd, "wb");
+
+ fprintf(f,"From: %s\n", from.length == -1
+ ? expand_string(US"$local_part_prefix$local_part$local_part_suffix@$domain")
+ : from.character);
+ for (string_item * p = recipient; p; p=p->next)
+ fprintf(f,"To: %s\n",p->text);
+ fprintf(f,"Auto-Submitted: auto-notified; %s\n",filter->enotify_mailto_owner);
+ if (header.length>0) fprintf(f,"%s",header.character);
+ if (message.length==-1)
+ {
+ message.character=US"Notification";
+ message.length=Ustrlen(message.character);
+ }
+ if (message.length != -1)
+ fprintf(f, "Subject: %s\n", parse_quote_2047(message.character,
+ message.length, US"utf-8", TRUE));
+ fprintf(f,"\n");
+ if (body.length>0) fprintf(f,"%s\n",body.character);
+ fflush(f);
+ (void)fclose(f);
+ (void)child_close(pid, 0);
+ }
+ }
+ if ((filter_test != FTEST_NONE && debug_selector != 0) || debug_selector & D_filter)
+ debug_printf("Notification to `%s': '%s'.\n",method.character,message.length!=-1 ? message.character : CUS "");
+#endif
+ }
+ else
+ if ((filter_test != FTEST_NONE && debug_selector != 0) || debug_selector & D_filter)
+ debug_printf("Repeated notification to `%s' ignored.\n",method.character);
+ }
+ else
+ if ((filter_test != FTEST_NONE && debug_selector != 0) || debug_selector & D_filter)
+ 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)
+ {
+ 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 (struct String * a = addresses; a->length != -1; ++a)
+ {
+ string_item * new = store_get(sizeof(string_item), FALSE);
+
+ new->text = store_get(a->length+1, is_tainted(a->character));
+ 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;
+ md5 base;
+ uschar digest[16];
+ uschar hexdigest[33];
+ gstring * 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 */
+
+ md5_start(&base);
+
+ if (handle.length==-1)
+ {
+ gstring * key = NULL;
+ if (subject.length!=-1) key =string_catn(key, subject.character, subject.length);
+ if (from.length!=-1) key = string_catn(key, from.character, from.length);
+ key = string_catn(key, reason_is_mime?US"1":US"0", 1);
+ key = string_catn(key, reason.character, reason.length);
+ md5_end(&base, key->s, key->ptr, digest);
+ }
+ else
+ md5_end(&base, handle.character, handle.length, digest);
+
+ for (int 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)
+ {
+ once = string_cat (NULL, filter->vacation_directory);
+ once = string_catn(once, US"/", 1);
+ once = string_catn(once, hexdigest, 33);
+
+ /* process subject */
+
+ if (subject.length==-1)
+ {
+ uschar *subject_def;
+
+ subject_def = expand_string(US"${if def:header_subject {true}{false}}");
+ if (subject_def && Ustrcmp(subject_def,"true")==0)
+ {
+ gstring * g = string_catn(NULL, US"Auto: ", 6);
+
+ expand_header(&subject,&str_subject);
+ g = string_catn(g, subject.character, subject.length);
+ subject.character = string_from_gstring(g);
+ subject.length = g->ptr;
+ }
+ else
+ {
+ subject.character=US"Automated reply";
+ subject.length=Ustrlen(subject.character);
+ }
+ }
+
+ /* add address to list of generated addresses */
+
+ addr = deliver_make_addr(string_sprintf(">%.256s", sender_address), FALSE);
+ setflag(addr, af_pfr);
+ addr->prop.ignore_error = TRUE;
+ addr->next = *generated;
+ *generated = addr;
+ addr->reply = store_get(sizeof(reply_item), FALSE);
+ memset(addr->reply,0,sizeof(reply_item)); /* XXX */
+ addr->reply->to = string_copy(sender_address);
+ if (from.length==-1)
+ addr->reply->from = expand_string(US"$local_part@$domain");
+ else
+ addr->reply->from = from.character;
+ /* deconst cast safe as we pass in a non-const item */
+ addr->reply->subject = US parse_quote_2047(subject.character, subject.length, US"utf-8", TRUE);
+ addr->reply->oncelog = string_from_gstring(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++;
+
+ addr->reply->headers = string_copyn(reason.character, mime_body-reason.character);
+
+ if (mime_body+(sizeof(nlnl)-1)<reason_end) mime_body+=(sizeof(nlnl)-1);
+ else mime_body=reason_end-1;
+ addr->reply->text = string_copyn(mime_body, reason_end-mime_body);
+ }
+ else
+ {
+ struct String qp = { .character = NULL, .length = 0 }; /* Keep compiler happy (PH) */
+
+ 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 */
+
+ if ( !(oncelogdir = exim_opendir(filter->vacation_directory))
+ && errno != ENOENT)
+ {
+ filter->errmsg = CUS "unable to open vacation directory";
+ return -1;
+ }
+
+ if (oncelogdir)
+ {
+ time(&now);
+
+ while ((oncelog = readdir(oncelogdir)))
+ 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;
+ 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 (struct String * 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))
+ {
+ if (filter->enotify_mailto_owner == NULL)
+ {
+ filter->errmsg=CUS "enotify disabled";
+ return -1;
+ }
+ 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)
+ vacation_directory where to store vacation "once" files
+ enotify_mailto_owner owner of mailto notifications
+ 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 *enotify_mailto_owner, 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)
+ sieve.vacation_directory = NULL;
+else
+ {
+ if (!(sieve.vacation_directory = expand_string(vacation_directory)))
+ {
+ *error = string_sprintf("failed to expand \"%s\" "
+ "(sieve_vacation_directory): %s", vacation_directory,
+ expand_string_message);
+ return FF_ERROR;
+ }
+ }
+
+if (!enotify_mailto_owner)
+ sieve.enotify_mailto_owner = NULL;
+else
+ {
+ if (!(sieve.enotify_mailto_owner = expand_string(enotify_mailto_owner)))
+ {
+ *error = string_sprintf("failed to expand \"%s\" "
+ "(sieve_enotify_mailto_owner): %s", enotify_mailto_owner,
+ expand_string_message);
+ return FF_ERROR;
+ }
+ }
+
+sieve.useraddress = useraddress
+ ? useraddress : CUS "$local_part_prefix$local_part$local_part_suffix";
+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 = US"Implicit keep";
+ r = FF_DELIVERED;
+ }
+ else
+ {
+ msg = US"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;
+}