X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/87fcc8b991cb2c6fb33e78593230685d104c6800..HEAD:/src/src/sieve.c diff --git a/src/src/sieve.c b/src/src/sieve.c deleted file mode 100644 index b8ade713b..000000000 --- a/src/src/sieve.c +++ /dev/null @@ -1,2818 +0,0 @@ -/* $Cambridge: exim/src/src/sieve.c,v 1.14 2005/11/14 11:41:23 ph10 Exp $ */ - -/************************************************* -* Exim - an Internet mail transport agent * -*************************************************/ - -/* Copyright (c) Michael Haardt 2003-2005 */ -/* See the file NOTICE for conditions of use and distribution. */ - -/* This code was contributed by Michael Haardt. */ - - -/* Sieve mail filter. */ - -#include -#include -#include -#include -#include - -#include "exim.h" - -#if HAVE_ICONV -#include -#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 "notify". */ -#undef NOTIFY - -/* 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 NOTIFY - int require_notify; -#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; - }; - -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_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 NOTIFY -static uschar str_notify_c[]="notify"; -static const struct String str_notify={ str_notify_c, 6 }; -#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 -*/ - -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=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) -#ifdef RFC_EOL - && start+2length; - else - *new++=*start; - ++line; - } -#ifdef RFC_EOL - else if (ch=='\r' && start+1length; - line=0; - ++start; - } - else - *new++='\n'; - line=0; - } -#else - else if (ch=='\n') - { - if (pass==0) - ++dst->length; - else - *new++=*start; - ++line; - } -#endif - 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; -} - - -/************************************************* -* 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) -{ -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='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 && hpartcharacter; -aend=a->character+a->length; -bs=b->character; -bend=b->character+b->length; - -while (*as>='0' && *as<='9' && ascharacter; -while (*bs>='0' && *bs<='9' && bscharacter; - -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: - 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) - { - filter->errmsg=CUS "syntactically invalid pattern"; - return -1; - } - break; - } - case COMP_EN_ASCII_CASEMAP: - { - if ((r=eq_glob(needle,haystack,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 * -*************************************************/ - -/* -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; -while (*r) - { - if (*r=='\n') - { - ++r; - while (*r==' ' || *r=='\t') ++r; - if (*r) *t++=' '; - } - else - *t++=*r++; - } -*t++='\0'; -value->character=rfc2047_decode(s,TRUE,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; -} - - -/************************************************* -* Parse a 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; - data->character=string_cat(data->character,&dataCapacity,&foo,CUS "",1); - return 1; - } - else if (*filter->pc=='\\' && *(filter->pc+1)) /* quoted character */ - { - if (*(filter->pc+1)=='0') data->character=string_cat(data->character,&dataCapacity,&data->length,CUS "",1); - else data->character=string_cat(data->character,&dataCapacity,&data->length,filter->pc+1,1); - 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 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 - { - data->character=string_cat(data->character,&dataCapacity,&data->length,CUS "",1); -#ifdef RFC_EOL - filter->pc+=3; -#else - filter->pc+=2; -#endif - ++filter->line; - 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 (Ustrncmp(filter->pc,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" - -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 *true, int exec) -{ -if (parse_white(filter)==-1) return -1; -if (*filter->pc=='(') - { - ++filter->pc; - *n=0; - *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) ++*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 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; - } - } - } - return 1; - } -else if (parse_identifier(filter,CUS "allof")) - { - /* - allof-test = "allof" - */ - - int n,true; - - switch (parse_testlist(filter,&n,&true,exec)) - { - case -1: return -1; - case 0: filter->errmsg=CUS "missing test list"; return -1; - default: *cond=(n==true); return 1; - } - } -else if (parse_identifier(filter,CUS "anyof")) - { - /* - anyof-test = "anyof" - */ - - int n,true; - - switch (parse_testlist(filter,&n,&true,exec)) - { - case -1: return -1; - case 0: filter->errmsg=CUS "missing test list"; return -1; - default: *cond=(true>0); return 1; - } - } -else if (parse_identifier(filter,CUS "exists")) - { - /* - exists-test = "exists" - */ - - 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] } - - */ - - 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 - */ - - 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 - - envelope-part is case insensitive "from" or "to" - */ - - 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; - } - } - 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; - } -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 NOTIFY - else if (parse_identifier(filter,CUS "notify")) - { - /* - notify-command = "notify" { notify-options } ";" - notify-options = [":method" string] - [":message" string] - */ - - int m; - struct String method; - struct String message; - - if (!filter->require_notify) - { - filter->errmsg=CUS "missing previous require \"notify\";"; - return -1; - } - method.character=(uschar*)0; - method.length=-1; - message.character=(uschar*)0; - message.length=-1; - for (;;) - { - if (parse_white(filter)==-1) return -1; - if (parse_identifier(filter,CUS ":method")==1) - { - if (parse_white(filter)==-1) return -1; - if ((m=parse_string(filter,&method))!=1) - { - if (m==0) filter->errmsg=CUS "method string expected"; - 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_semicolon(filter)==-1) return -1; - } -#endif -#ifdef VACATION - else if (parse_identifier(filter,CUS "vacation")) - { - /* - vacation-command = "vacation" { vacation-options } ";" - 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 (daysVACATION_MAX_DAYS) days=VACATION_MAX_DAYS; - } - else if (parse_identifier(filter,CUS ":subject")==1) - { - if (parse_white(filter)==-1) return -1; - if ((m=parse_string(filter,&subject))!=1) - { - if (m==0) filter->errmsg=CUS "subject string expected"; - return -1; - } - } - else if (parse_identifier(filter,CUS ":from")==1) - { - int start, end, domain; - uschar *error,*ss; - - if (parse_white(filter)==-1) return -1; - if ((m=parse_string(filter,&from))!=1) - { - if (m==0) filter->errmsg=CUS "from string expected"; - return -1; - } - if (from.length>0) - { - ss = parse_extract_address(from.character, &error, &start, &end, &domain, - FALSE); - if (ss == NULL) - { - filter->errmsg=string_sprintf("malformed address \"%s\" in " - "Sieve filter: %s", from.character, error); - return -1; - } - } - else - { - filter->errmsg=CUS "empty :from address in Sieve filter"; - return -1; - } - } - else if (parse_identifier(filter,CUS ":addresses")==1) - { - struct String *a; - - 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; serrmsg=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_printf("Sieve: mail was personal, vacation file basename: %s\n", hexdigest); - } - else - { - capacity=Ustrlen(filter->vacation_directory); - start=capacity; - once=string_cat(filter->vacation_directory,&capacity,&start,US"/",1); - once=string_cat(once,&capacity,&start,hexdigest,33); - once[start] = '\0'; - - /* process subject */ - - if (subject.length==-1) - { - expand_header(&subject,&str_subject); - capacity=6; - start=6; - subject.character=string_cat(US"Auto: ",&capacity,&start,subject.character,subject.length); - subject.length=start; - } - - /* add address to list of generated addresses */ - - addr = deliver_make_addr(string_sprintf(">%.256s", sender_address), FALSE); - setflag(addr, af_pfr); - setflag(addr, af_ignore_error); - addr->next = *generated; - *generated = addr; - addr->reply = store_get(sizeof(reply_item)); - memset(addr->reply,0,sizeof(reply_item)); /* XXX */ - addr->reply->to = string_copy(sender_address); - if (from.length==-1) - addr->reply->from = expand_string(US"$local_part@$domain"); - else - addr->reply->from = from.character; - /* Allocation is larger than neccessary, but enough even for split MIME words */ - buffer_capacity=16+4*subject.length; - buffer=store_get(buffer_capacity); - addr->reply->subject=parse_quote_2047(subject.character, subject.length, US"utf-8", buffer, buffer_capacity); - addr->reply->oncelog=once; - addr->reply->once_repeat=days*86400; - - /* build body and MIME headers */ - - if (reason_is_mime) - { - uschar *mime_body,*reason_end; -#ifdef RFC_EOL - static const uschar nlnl[]="\r\n\r\n"; -#else - static const uschar nlnl[]="\n\n"; -#endif - - for - ( - mime_body=reason.character,reason_end=reason.character+reason.length; - mime_body<(reason_end-sizeof(nlnl)-1) && memcmp(mime_body,nlnl,sizeof(nlnl)-1); - ++mime_body - ); - capacity = 0; - start = 0; - addr->reply->headers = string_cat(NULL,&capacity,&start,reason.character,mime_body-reason.character); - addr->reply->headers[start] = '\0'; - capacity = 0; - start = 0; - if (mime_body+(sizeof(nlnl)-1)reply->text = string_cat(NULL,&capacity,&start,mime_body,reason_end-mime_body); - addr->reply->text[start] = '\0'; - } - else - { - struct String qp; - - capacity = 0; - start = reason.length; - addr->reply->headers = US"MIME-Version: 1.0\n" - "Content-Type: text/plain;\n" - "\tcharset=\"utf-8\"\n" - "Content-Transfer-Encoding: quoted-printable"; - addr->reply->text = quoted_printable_encode(&reason,&qp)->character; - } - } - } - else if (filter_test != FTEST_NONE) - { - 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 NOTIFY -filter->require_notify=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) - */ - - 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 NOTIFY - else if (eq_octet(check,&str_notify,0)) filter->require_notify=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; -}