X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/29f89cad0cf7be1977f6ed36d27ac9b651aec9e2..efd9a4221230676150af3f26d08432c5567c3a07:/src/src/expand.c diff --git a/src/src/expand.c b/src/src/expand.c index afa898205..599dd9c0d 100644 --- a/src/src/expand.c +++ b/src/src/expand.c @@ -1,4 +1,4 @@ -/* $Cambridge: exim/src/src/expand.c,v 1.82 2007/02/14 14:59:02 ph10 Exp $ */ +/* $Cambridge: exim/src/src/expand.c,v 1.97 2008/12/12 14:51:47 nm4 Exp $ */ /************************************************* * Exim - an Internet mail transport agent * @@ -349,7 +349,8 @@ enum { vtype_localpart, /* extract local part from string */ vtype_domain, /* extract domain from string */ vtype_recipients, /* extract recipients from recipients list */ - /* (enabled only during system filtering */ + /* (available only in system filters, ACLs, and */ + /* local_scan()) */ vtype_todbsdin, /* value not used; generate BSD inbox tod */ vtype_tode, /* value not used; generate tod in epoch format */ vtype_todf, /* value not used; generate full tod */ @@ -395,6 +396,10 @@ static var_entry var_table[] = { { "compile_date", vtype_stringptr, &version_date }, { "compile_number", vtype_stringptr, &version_cnumber }, { "csa_status", vtype_stringptr, &csa_status }, +#ifdef EXPERIMENTAL_DCC + { "dcc_header", vtype_stringptr, &dcc_header }, + { "dcc_result", vtype_stringptr, &dcc_result }, +#endif #ifdef WITH_OLD_DEMIME { "demime_errorlevel", vtype_int, &demime_errorlevel }, { "demime_reason", vtype_stringptr, &demime_reason }, @@ -411,8 +416,13 @@ static var_entry var_table[] = { { "dk_signsall", vtype_dk_verify, NULL }, { "dk_status", vtype_dk_verify, NULL }, { "dk_testing", vtype_dk_verify, NULL }, +#endif +#ifdef EXPERIMENTAL_DKIM + { "dkim_domain", vtype_stringptr, &dkim_signing_domain }, + { "dkim_selector", vtype_stringptr, &dkim_signing_selector }, #endif { "dnslist_domain", vtype_stringptr, &dnslist_domain }, + { "dnslist_matched", vtype_stringptr, &dnslist_matched }, { "dnslist_text", vtype_stringptr, &dnslist_text }, { "dnslist_value", vtype_stringptr, &dnslist_value }, { "domain", vtype_stringptr, &deliver_domain }, @@ -451,6 +461,7 @@ static var_entry var_table[] = { #ifdef WITH_CONTENT_SCAN { "malware_name", vtype_stringptr, &malware_name }, #endif + { "max_received_linelength", vtype_int, &max_received_linelength }, { "message_age", vtype_int, &message_age }, { "message_body", vtype_msgbody, &message_body }, { "message_body_end", vtype_msgbody_end, &message_body_end }, @@ -546,6 +557,7 @@ static var_entry var_table[] = { { "smtp_command", vtype_stringptr, &smtp_cmd_buffer }, { "smtp_command_argument", vtype_stringptr, &smtp_cmd_argument }, { "smtp_count_at_connection_start", vtype_int, &smtp_accept_count }, + { "smtp_notquit_reason", vtype_stringptr, &smtp_notquit_reason }, { "sn0", vtype_filter_int, &filter_sn[0] }, { "sn1", vtype_filter_int, &filter_sn[1] }, { "sn2", vtype_filter_int, &filter_sn[2] }, @@ -563,6 +575,7 @@ static var_entry var_table[] = { { "spam_score_int", vtype_stringptr, &spam_score_int }, #endif #ifdef EXPERIMENTAL_SPF + { "spf_guess", vtype_stringptr, &spf_guess }, { "spf_header_comment", vtype_stringptr, &spf_header_comment }, { "spf_received", vtype_stringptr, &spf_received }, { "spf_result", vtype_stringptr, &spf_result }, @@ -1443,7 +1456,7 @@ while (last > first) return var_buffer; case vtype_load_avg: - sprintf(CS var_buffer, "%d", os_getloadavg()); /* load_average */ + sprintf(CS var_buffer, "%d", OS_GETLOADAVG()); /* load_average */ return var_buffer; case vtype_host_lookup: /* Lookup if not done so */ @@ -1502,9 +1515,15 @@ while (last > first) if (len > 0) { body[len] = 0; - while (len > 0) + if (message_body_newlines) /* Separate loops for efficiency */ + { + while (len > 0) + { if (body[--len] == 0) body[len] = ' '; } + } + else { - if (body[--len] == '\n' || body[len] == 0) body[len] = ' '; + while (len > 0) + { if (body[--len] == '\n' || body[len] == 0) body[len] = ' '; } } } } @@ -2372,7 +2391,6 @@ switch(cond_type) while (isspace(*s)) s++; if (*s++ != '{') goto COND_FAILED_CURLY_START; - sub[0] = expand_string_internal(s, TRUE, &s, (yield == NULL)); if (sub[0] == NULL) return NULL; if (*s++ != '}') goto COND_FAILED_CURLY_END; @@ -2410,6 +2428,7 @@ switch(cond_type) { expand_string_message = string_sprintf("%s inside \"%s\" condition", expand_string_message, name); + iterate_item = save_iterate_item; return NULL; } DEBUG(D_expand) debug_printf("%s: condition evaluated to %s\n", name, @@ -3117,6 +3136,12 @@ we reset the store before processing it; if the result is in fresh store, we use that without copying. This is helpful for expanding strings like $message_headers which can get very long. +There's a problem if a ${dlfunc item has side-effects that cause allocation, +since resetting the store at the end of the expansion will free store that was +allocated by the plugin code as well as the slop after the expanded string. So +we skip any resets if ${dlfunc has been used. This is an unfortunate +consequence of string expansion becoming too powerful. + Arguments: string the string to be expanded ket_ends true if expansion is to stop at } @@ -3142,6 +3167,7 @@ uschar *yield = store_get(size); uschar *s = string; uschar *save_expand_nstring[EXPAND_MAXN+1]; int save_expand_nlength[EXPAND_MAXN+1]; +BOOL resetok = TRUE; expand_string_forcedfail = FALSE; expand_string_message = US""; @@ -3214,7 +3240,7 @@ while (*s != 0) if (ptr == 0 && yield != NULL) { - store_reset(yield); + if (resetok) store_reset(yield); yield = NULL; size = 0; } @@ -3698,11 +3724,11 @@ while (*s != 0) *domain++ = '\0'; yield = string_cat(yield,&size,&ptr,US"prvs=",5); - string_cat(yield,&size,&ptr,sub_arg[0],Ustrlen(sub_arg[0])); - string_cat(yield,&size,&ptr,US"/",1); string_cat(yield,&size,&ptr,(sub_arg[2] != NULL) ? sub_arg[2] : US"0", 1); string_cat(yield,&size,&ptr,prvs_daystamp(7),3); string_cat(yield,&size,&ptr,p,6); + string_cat(yield,&size,&ptr,US"=",1); + string_cat(yield,&size,&ptr,sub_arg[0],Ustrlen(sub_arg[0])); string_cat(yield,&size,&ptr,US"@",1); string_cat(yield,&size,&ptr,domain,Ustrlen(domain)); @@ -3740,15 +3766,15 @@ while (*s != 0) case 3: goto EXPAND_FAILED; } - re = regex_must_compile(US"^prvs\\=(.+)\\/([0-9])([0-9]{3})([A-F0-9]{6})\\@(.+)$", + re = regex_must_compile(US"^prvs\\=([0-9])([0-9]{3})([A-F0-9]{6})\\=(.+)\\@(.+)$", TRUE,FALSE); if (regex_match_and_setup(re,sub_arg[0],0,-1)) { - uschar *local_part = string_copyn(expand_nstring[1],expand_nlength[1]); - uschar *key_num = string_copyn(expand_nstring[2],expand_nlength[2]); - uschar *daystamp = string_copyn(expand_nstring[3],expand_nlength[3]); - uschar *hash = string_copyn(expand_nstring[4],expand_nlength[4]); + uschar *local_part = string_copyn(expand_nstring[4],expand_nlength[4]); + uschar *key_num = string_copyn(expand_nstring[1],expand_nlength[1]); + uschar *daystamp = string_copyn(expand_nstring[2],expand_nlength[2]); + uschar *hash = string_copyn(expand_nstring[3],expand_nlength[3]); uschar *domain = string_copyn(expand_nstring[5],expand_nlength[5]); DEBUG(D_expand) debug_printf("prvscheck localpart: %s\n", local_part); @@ -3799,7 +3825,7 @@ while (*s != 0) Adjust "inow" accordingly. */ if ( (iexpire < 7) && (inow >= 993) ) inow = 0; - if (iexpire > inow) + if (iexpire >= inow) { prvscheck_result = US"1"; DEBUG(D_expand) debug_printf("prvscheck: success, $pvrs_result set to 1\n"); @@ -4633,7 +4659,7 @@ while (*s != 0) while (len > 0 && isspace(p[len-1])) len--; p[len] = 0; - if (*p == 0) + if (*p == 0 && !skipping) { expand_string_message = US"first argument of \"extract\" must " "not be empty"; @@ -4779,6 +4805,8 @@ while (*s != 0) BOOL condresult; if (eval_condition(expr, &condresult) == NULL) { + iterate_item = save_iterate_item; + lookup_value = save_lookup_value; expand_string_message = string_sprintf("%s inside \"%s\" condition", expand_string_message, name); goto EXPAND_FAILED; @@ -4798,6 +4826,7 @@ while (*s != 0) temp = expand_string_internal(expr, TRUE, NULL, skipping); if (temp == NULL) { + iterate_item = save_iterate_item; expand_string_message = string_sprintf("%s inside \"%s\" item", expand_string_message, name); goto EXPAND_FAILED; @@ -4941,8 +4970,10 @@ while (*s != 0) returns OK, we have a replacement string; if it returns DEFER then expansion has failed in a non-forced manner; if it returns FAIL then failure was forced; if it returns ERROR or any other value there's a - problem, so panic slightly. */ + problem, so panic slightly. In any case, assume that the function has + side-effects on the store that must be preserved. */ + resetok = FALSE; result = NULL; for (argc = 0; argv[argc] != NULL; argc++); status = func(&result, argc - 2, &argv[2]); @@ -5680,7 +5711,7 @@ while (*s != 0) int newsize = 0; if (ptr == 0) { - store_reset(yield); + if (resetok) store_reset(yield); yield = NULL; size = 0; } @@ -5735,7 +5766,7 @@ if (left != NULL) *left = s; In many cases the final string will be the first one that was got and so there will be optimal store usage. */ -store_reset(yield + ptr + 1); +if (resetok) store_reset(yield + ptr + 1); DEBUG(D_expand) { debug_printf("expanding: %.*s\n result: %s\n", (int)(s - string), string, @@ -5843,6 +5874,23 @@ systems, so we set it zero ourselves. */ errno = 0; expand_string_message = NULL; /* Indicates no error */ + +/* Before Exim 4.64, strings consisting entirely of whitespace compared +equal to 0. Unfortunately, people actually relied upon that, so preserve +the behaviour explicitly. Stripping leading whitespace is a harmless +noop change since strtol skips it anyway (provided that there is a number +to find at all). */ +if (isspace(*s)) + { + while (isspace(*s)) ++s; + if (*s == '\0') + { + DEBUG(D_expand) + debug_printf("treating blank string as number 0\n"); + return 0; + } + } + value = strtol(CS s, CSS &endptr, 10); if (endptr == s)