diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/src/sieve.c | 384 |
1 files changed, 334 insertions, 50 deletions
diff --git a/src/src/sieve.c b/src/src/sieve.c index 92cfb608e..8b89a0ea9 100644 --- a/src/src/sieve.c +++ b/src/src/sieve.c @@ -1,10 +1,10 @@ -/* $Cambridge: exim/src/src/sieve.c,v 1.17 2005/11/28 09:47:20 ph10 Exp $ */ +/* $Cambridge: exim/src/src/sieve.c,v 1.18 2006/03/01 10:40:03 ph10 Exp $ */ /************************************************* * Exim - an Internet mail transport agent * *************************************************/ -/* Copyright (c) Michael Haardt 2003-2005 */ +/* Copyright (c) Michael Haardt 2003-2006 */ /* See the file NOTICE for conditions of use and distribution. */ /* This code was contributed by Michael Haardt. */ @@ -63,6 +63,7 @@ struct Sieve #endif #ifdef NOTIFY int require_notify; + struct Notification *notified; #endif #ifdef SUBADDRESS int require_subaddress; @@ -93,6 +94,14 @@ struct String int length; }; +struct Notification + { + struct String method; + struct String priority; + struct String message; + struct Notification *next; + }; + static int parse_test(struct Sieve *filter, int *cond, int exec); static int parse_commands(struct Sieve *filter, int exec, address_item **generated); @@ -161,6 +170,10 @@ static const struct String str_comparator_iascii_numeric={ str_comparator_iascii /* Arguments: src UTF-8 string + dst US-ASCII string + +Returns + dst */ static struct String *quoted_printable_encode(const struct String *src, struct String *dst) @@ -202,13 +215,8 @@ for (pass=0; pass<=1; ++pass) || ( (ch==9 || ch==32) -#ifdef RFC_EOL && start+2<end && (*(start+1)!='\r' || *(start+2)!='\n') -#else - && start+1<end - && *(start+1)!='\n' -#endif ) ) { @@ -218,29 +226,18 @@ for (pass=0; pass<=1; ++pass) *new++=*start; ++line; } -#ifdef RFC_EOL else if (ch=='\r' && start+1<end && *(start+1)=='\n') { if (pass==0) { ++dst->length; line=0; - ++start; } else *new++='\n'; line=0; + ++start; } -#else - else if (ch=='\n') - { - if (pass==0) - ++dst->length; - else - *new++=*start; - ++line; - } -#endif else { if (pass==0) @@ -260,6 +257,173 @@ for (pass=0; pass<=1; ++pass) /************************************************* +* Decode URI encoded string * +*************************************************/ + +/* +Arguments: + str URI encoded string + +Returns + 0 Decoding successful + -1 Encoding error +*/ + +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 + +Returns + 1 URI is syntactically OK + -1 syntax error +*/ + +int parse_mailto_uri(struct Sieve *filter, const uschar *uri, string_item **recipient, struct String *body) +{ +const uschar *start; +struct String to,hname,hvalue; +int capacity; +string_item *new; + +if (*uri && *uri!='?') + for (;;) + { + /* match to */ + for (start=uri; *uri && *uri!='?' && (*uri!='%' || *(uri+1)!='2' || tolower(*(uri+2))!='c'); ++uri); + if (uri>start) + { + capacity=0; + to.character=(uschar*)0; + to.length=0; + to.character=string_cat(to.character,&capacity,&to.length,start,uri-start); + to.character[to.length]='\0'; + if (uri_decode(&to)==-1) + { + filter->errmsg=US"Invalid URI encoding"; + return -1; + } + new=store_get(sizeof(string_item)); + new->text=store_get(to.length+1); + if (to.length) memcpy(new->text,to.character,to.length); + new->text[to.length]='\0'; + new->next=*recipient; + *recipient=new; + } + else + { + filter->errmsg=US"Missing addr-spec in URI"; + return -1; + } + if (*uri=='%') uri+=3; + else break; + } +if (*uri=='?') + { + ++uri; + for (;;) + { + /* match hname */ + for (start=uri; *uri && (isalnum(*uri) || strchr("$-_.+!*'(),%",*uri)); ++uri); + if (uri>start) + { + capacity=0; + hname.character=(uschar*)0; + hname.length=0; + hname.character=string_cat(hname.character,&capacity,&hname.length,start,uri-start); + hname.character[hname.length]='\0'; + if (uri_decode(&hname)==-1) + { + filter->errmsg=US"Invalid URI encoding"; + return -1; + } + } + /* match = */ + if (*uri=='=') + ++uri; + else + { + filter->errmsg=US"Missing equal after hname"; + return -1; + } + /* match hvalue */ + for (start=uri; *uri && (isalnum(*uri) || strchr("$-_.+!*'(),%",*uri)); ++uri); + if (uri>start) + { + capacity=0; + hvalue.character=(uschar*)0; + hvalue.length=0; + hvalue.character=string_cat(hvalue.character,&capacity,&hvalue.length,start,uri-start); + hvalue.character[hvalue.length]='\0'; + if (uri_decode(&hvalue)==-1) + { + filter->errmsg=US"Invalid URI encoding"; + return -1; + } + } + if (hname.length==2 && strcmp(hname.character,"to")==0) + { + new=store_get(sizeof(string_item)); + new->text=store_get(hvalue.length+1); + if (hvalue.length) memcpy(new->text,hvalue.character,hvalue.length); + new->text[hvalue.length]='\0'; + new->next=*recipient; + *recipient=new; + } + else if (hname.length==4 && strcmp(hname.character,"body")==0) + *body=hvalue; + if (*uri=='&') ++uri; + else break; + } + } +if (*uri) + { + filter->errmsg=US"Syntactically invalid URI"; + return -1; + } +return 1; +} + +/************************************************* * Octet-wise string comparison * *************************************************/ @@ -358,7 +522,7 @@ Returns: 0 needle not found in haystack */ static int eq_glob(const struct String *needle, - const struct String *haystack, int ascii_caseless) + const struct String *haystack, int ascii_caseless, int match_octet) { const uschar *n,*h,*nend,*hend; int may_advance=0; @@ -388,14 +552,19 @@ while (n<nend) case '?': { if (hpart==hend) return 0; - /* watch out: Do not match one character, but one UTF8 encoded character */ - if ((*hpart&0xc0)==0xc0) - { + if (match_octet) ++hpart; - while (hpart<hend && ((*hpart&0xc0)==0x80)) ++hpart; - } else - ++hpart; + { + /* Match one UTF8 encoded character */ + if ((*hpart&0xc0)==0xc0) + { + ++hpart; + while (hpart<hend && ((*hpart&0xc0)==0x80)) ++hpart; + } + else + ++hpart; + } ++npart; break; } @@ -509,6 +678,7 @@ switch (relop) /* 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 @@ -604,7 +774,7 @@ switch (mt) { case COMP_OCTET: { - if ((r=eq_glob(needle,haystack,0))==-1) + if ((r=eq_glob(needle,haystack,0,1))==-1) { filter->errmsg=CUS "syntactically invalid pattern"; return -1; @@ -613,7 +783,7 @@ switch (mt) } case COMP_EN_ASCII_CASEMAP: { - if ((r=eq_glob(needle,haystack,1))==-1) + if ((r=eq_glob(needle,haystack,1,1))==-1) { filter->errmsg=CUS "syntactically invalid pattern"; return -1; @@ -782,6 +952,10 @@ new_addr->next = *generated; *************************************************/ /* +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 @@ -799,19 +973,16 @@ value->length=0; value->character=(uschar*)0; t=r=s=expand_string(string_sprintf("$rheader_%s",quote(header))); -while (*r==' ') ++r; +while (*r==' ' || *r=='\t') ++r; while (*r) { if (*r=='\n') - { ++r; - while (*r==' ' || *r=='\t') ++r; - if (*r) *t++=' '; - } else *t++=*r++; } -*t++='\0'; +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); } @@ -982,6 +1153,7 @@ if (*filter->pc=='"') /* quoted string */ int foo=data->length; ++filter->pc; + /* that way, there will be at least one character allocated */ data->character=string_cat(data->character,&dataCapacity,&foo,CUS "",1); return 1; } @@ -993,6 +1165,15 @@ if (*filter->pc=='"') /* quoted string */ } else /* regular character */ { +#ifdef RFC_EOL + if (*filter->pc=='\r' && *(filter->pc+1)=='\n') ++filter->line; +#else + if (*filter->pc=='\n') + { + data->character=string_cat(data->character,&dataCapacity,&data->length,US"\r",1); + ++filter->line; + } +#endif data->character=string_cat(data->character,&dataCapacity,&data->length,filter->pc,1); filter->pc++; } @@ -1048,7 +1229,10 @@ else if (Ustrncmp(filter->pc,CUS "text:",5)==0) /* multiline string */ if (*filter->pc=='.' && *(filter->pc+1)=='\n') /* end of string */ #endif { - data->character=string_cat(data->character,&dataCapacity,&data->length,CUS "",1); + int foo=data->length; + + /* that way, there will be at least one character allocated */ + data->character=string_cat(data->character,&dataCapacity,&foo,CUS "",1); #ifdef RFC_EOL filter->pc+=3; #else @@ -2299,12 +2483,18 @@ while (*filter->pc) /* notify-command = "notify" { notify-options } ";" notify-options = [":method" string] + [":priority" string] [":message" string] */ int m; struct String method; + struct String priority; struct String message; + struct Notification *already; + string_item *recipient; + struct String body; + uschar *envelope_from,*envelope_to; if (!filter->require_notify) { @@ -2313,8 +2503,15 @@ while (*filter->pc) } method.character=(uschar*)0; method.length=-1; + priority.character=(uschar*)0; + priority.length=-1; message.character=(uschar*)0; message.length=-1; + recipient=NULL; + body.length=-1; + body.character=(uschar*)0; + envelope_from=expand_string("$sender_address"); + envelope_to=expand_string("$local_part_prefix$local_part$local_part_suffix@$domain"); for (;;) { if (parse_white(filter)==-1) return -1; @@ -2326,6 +2523,19 @@ while (*filter->pc) if (m==0) filter->errmsg=CUS "method string expected"; return -1; } + if (method.length>7 && strncmp(method.character,"mailto:",7)==0) + { + if (parse_mailto_uri(filter,method.character+7,&recipient,&body)==-1) return -1; + } + } + else if (parse_identifier(filter,CUS ":priority")==1) + { + if (parse_white(filter)==-1) return -1; + if ((m=parse_string(filter,&priority))!=1) + { + if (m==0) filter->errmsg=CUS "priority string expected"; + return -1; + } } else if (parse_identifier(filter,CUS ":message")==1) { @@ -2339,6 +2549,72 @@ while (*filter->pc) else break; } if (parse_semicolon(filter)==-1) return -1; + + if (method.length==-1) + { + if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0) + { + debug_printf("Ignoring method-less notification.\n"); + } + } + else + { + for (already=filter->notified; already; already=already->next) + { + if (already->method.length==method.length + && (method.length==-1 || strcmp(already->method.character,method.character)==0) + && already->priority.length==priority.length + && (priority.length==-1 || strcmp(already->priority.character,priority.character)==0) + && already->message.length==message.length + && (message.length==-1 || strcmp(already->message.character,message.character)==0)) + break; + } + if (already==(struct Notification*)0) + /* New notification, process it */ + { + struct Notification *sent; + sent=store_get(sizeof(struct Notification)); + sent->method=method; + sent->priority=priority; + sent->message=message; + sent->next=filter->notified; + filter->notified=sent; + if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0) + { + debug_printf("Notification to `%s'.\n",method.character); + } + if (exec) + { + string_item *p; + header_line *h; + int pid,fd; + + if ((pid = child_open_exim2(&fd,envelope_to,envelope_to))>=1) + { + FILE *f; + + f = fdopen(fd, "wb"); + fprintf(f,"From: %s\n",envelope_to); + for (p=recipient; p; p=p->next) fprintf(f,"To: %s\n",p->text); + for (h = header_list; h != NULL; h = h->next) + if (h->type == htype_received) fprintf(f,"%s",h->text); + fprintf(f,"Subject: %s\n",message.length==-1 ? CUS "notification" : message.character); + fprintf(f,"\n"); + if (body.length>0) fprintf(f,"%s\n",body.character); + fflush(f); + (void)fclose(f); + (void)child_close(pid, 0); + } + } + } + else + { + if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0) + { + debug_printf("Repeated notification to `%s' ignored.\n",method.character); + } + } + } } #endif #ifdef VACATION @@ -2527,11 +2803,11 @@ while (*filter->pc) 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) + 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); } - else + if (filter_test == FTEST_NONE) { capacity=Ustrlen(filter->vacation_directory); start=capacity; @@ -2543,11 +2819,22 @@ while (*filter->pc) 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; + uschar *subject_def; + + subject_def=expand_string(US"${if def:header_subject {true}{false}}"); + if (Ustrcmp(subject_def,"true")==0) + { + expand_header(&subject,&str_subject); + capacity=6; + start=6; + subject.character=string_cat(US"Auto: ",&capacity,&start,subject.character,subject.length); + subject.length=start; + } + else + { + subject.character=US"Automated reply"; + subject.length=Ustrlen(subject.character); + } } /* add address to list of generated addresses */ @@ -2565,7 +2852,7 @@ while (*filter->pc) 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_capacity=32+4*subject.length; buffer=store_get(buffer_capacity); addr->reply->subject=parse_quote_2047(subject.character, subject.length, US"utf-8", buffer, buffer_capacity); addr->reply->oncelog=once; @@ -2576,16 +2863,12 @@ while (*filter->pc) 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<(reason_end-(sizeof(nlnl)-1)) && memcmp(mime_body,nlnl,(sizeof(nlnl)-1)); ++mime_body ); capacity = 0; @@ -2594,7 +2877,7 @@ while (*filter->pc) addr->reply->headers[start] = '\0'; capacity = 0; start = 0; - if (mime_body+(sizeof(nlnl)-1)<reason_end) mime_body+=sizeof(nlnl)-1; + if (mime_body+(sizeof(nlnl)-1)<reason_end) mime_body+=(sizeof(nlnl)-1); else mime_body=reason_end-1; addr->reply->text = string_cat(NULL,&capacity,&start,mime_body,reason_end-mime_body); addr->reply->text[start] = '\0'; @@ -2613,7 +2896,7 @@ while (*filter->pc) } } } - else if (filter_test != FTEST_NONE) + 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"); } @@ -2653,6 +2936,7 @@ filter->require_envelope_auth=0; #endif #ifdef NOTIFY filter->require_notify=0; +filter->notified=(struct Notification*)0; #endif #ifdef SUBADDRESS filter->require_subaddress=0; |