* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2012 */
+/* Copyright (c) University of Cambridge 1995 - 2016 */
/* See the file NOTICE for conditions of use and distribution. */
/* Recursively called function */
-static uschar *expand_string_internal(uschar *, BOOL, uschar **, BOOL, BOOL);
+static uschar *expand_string_internal(const uschar *, BOOL, const uschar **, BOOL, BOOL, BOOL *);
+static int_eximarith_t expanded_string_integer(const uschar *, BOOL);
#ifdef STAND_ALONE
#ifndef SUPPORT_CRYPTEQ
-
/*************************************************
* Local statics and tables *
*************************************************/
alphabetical order. */
static uschar *item_table[] = {
+ US"acl",
+ US"certextract",
US"dlfunc",
+ US"env",
US"extract",
US"filter",
US"hash",
US"hmac",
US"if",
+#ifdef SUPPORT_I18N
+ US"imapfolder",
+#endif
US"length",
+ US"listextract",
US"lookup",
US"map",
US"nhash",
US"reduce",
US"run",
US"sg",
+ US"sort",
US"substr",
US"tr" };
enum {
+ EITEM_ACL,
+ EITEM_CERTEXTRACT,
EITEM_DLFUNC,
+ EITEM_ENV,
EITEM_EXTRACT,
EITEM_FILTER,
EITEM_HASH,
EITEM_HMAC,
EITEM_IF,
+#ifdef SUPPORT_I18N
+ EITEM_IMAPFOLDER,
+#endif
EITEM_LENGTH,
+ EITEM_LISTEXTRACT,
EITEM_LOOKUP,
EITEM_MAP,
EITEM_NHASH,
EITEM_REDUCE,
EITEM_RUN,
EITEM_SG,
+ EITEM_SORT,
EITEM_SUBSTR,
EITEM_TR };
US"quote_local_part",
US"reverse_ip",
US"time_eval",
- US"time_interval"};
+ US"time_interval"
+#ifdef SUPPORT_I18N
+ ,US"utf8_domain_from_alabel",
+ US"utf8_domain_to_alabel",
+ US"utf8_localpart_from_alabel",
+ US"utf8_localpart_to_alabel"
+#endif
+ };
enum {
EOP_FROM_UTF8,
EOP_QUOTE_LOCAL_PART,
EOP_REVERSE_IP,
EOP_TIME_EVAL,
- EOP_TIME_INTERVAL };
+ EOP_TIME_INTERVAL
+#ifdef SUPPORT_I18N
+ ,EOP_UTF8_DOMAIN_FROM_ALABEL,
+ EOP_UTF8_DOMAIN_TO_ALABEL,
+ EOP_UTF8_LOCALPART_FROM_ALABEL,
+ EOP_UTF8_LOCALPART_TO_ALABEL
+#endif
+ };
static uschar *op_table_main[] = {
US"address",
US"addresses",
+ US"base32",
+ US"base32d",
US"base62",
US"base62d",
+ US"base64",
+ US"base64d",
US"domain",
US"escape",
+ US"escape8bit",
US"eval",
US"eval10",
US"expand",
US"h",
US"hash",
US"hex2b64",
+ US"hexquote",
+ US"ipv6denorm",
+ US"ipv6norm",
US"l",
US"lc",
US"length",
+ US"listcount",
+ US"listnamed",
US"mask",
US"md5",
US"nh",
US"rxquote",
US"s",
US"sha1",
+ US"sha256",
+ US"sha3",
US"stat",
US"str2b64",
US"strlen",
US"substr",
- US"uc" };
+ US"uc",
+ US"utf8clean" };
enum {
- EOP_ADDRESS = sizeof(op_table_underscore)/sizeof(uschar *),
+ EOP_ADDRESS = nelem(op_table_underscore),
EOP_ADDRESSES,
+ EOP_BASE32,
+ EOP_BASE32D,
EOP_BASE62,
EOP_BASE62D,
+ EOP_BASE64,
+ EOP_BASE64D,
EOP_DOMAIN,
EOP_ESCAPE,
+ EOP_ESCAPE8BIT,
EOP_EVAL,
EOP_EVAL10,
EOP_EXPAND,
EOP_H,
EOP_HASH,
EOP_HEX2B64,
+ EOP_HEXQUOTE,
+ EOP_IPV6DENORM,
+ EOP_IPV6NORM,
EOP_L,
EOP_LC,
EOP_LENGTH,
+ EOP_LISTCOUNT,
+ EOP_LISTNAMED,
EOP_MASK,
EOP_MD5,
EOP_NH,
EOP_RXQUOTE,
EOP_S,
EOP_SHA1,
+ EOP_SHA256,
+ EOP_SHA3,
EOP_STAT,
EOP_STR2B64,
EOP_STRLEN,
EOP_SUBSTR,
- EOP_UC };
+ EOP_UC,
+ EOP_UTF8CLEAN };
/* Table of condition names, and corresponding switch numbers. The names must
US"==", /* Backward compatibility */
US">",
US">=",
+ US"acl",
US"and",
US"bool",
US"bool_lax",
ECOND_NUM_EE,
ECOND_NUM_G,
ECOND_NUM_GE,
+ ECOND_ACL,
ECOND_AND,
ECOND_BOOL,
ECOND_BOOL_LAX,
};
-/* Type for main variable table */
-
-typedef struct {
- const char *name;
- int type;
- void *value;
-} var_entry;
-
-/* Type for entries pointing to address/length pairs. Not currently
-in use. */
-
-typedef struct {
- uschar **address;
- int *length;
-} alblock;
-
/* Types of table entry */
-enum {
+enum vtypes {
vtype_int, /* value is address of int */
vtype_filter_int, /* ditto, but recognized only when filtering */
vtype_ino, /* value is address of ino_t (not always an int) */
vtype_uid, /* value is address of uid_t (not always an int) */
vtype_gid, /* value is address of gid_t (not always an int) */
+ vtype_bool, /* value is address of bool */
vtype_stringptr, /* value is address of pointer to string */
vtype_msgbody, /* as stringptr, but read when first required */
vtype_msgbody_end, /* ditto, the end of the message */
vtype_msgheaders_raw, /* the message's headers, unprocessed */
vtype_localpart, /* extract local part from string */
vtype_domain, /* extract domain from string */
- vtype_recipients, /* extract recipients from recipients list */
- /* (available only in system filters, ACLs, and */
- /* local_scan()) */
+ vtype_string_func, /* value is string returned by given function */
vtype_todbsdin, /* value not used; generate BSD inbox tod */
vtype_tode, /* value not used; generate tod in epoch format */
vtype_todel, /* value not used; generate tod in epoch/usec format */
vtype_host_lookup, /* value not used; get host name */
vtype_load_avg, /* value not used; result is int from os_getloadavg */
vtype_pspace, /* partition space; value is T/F for spool/log */
- vtype_pinodes /* partition inodes; value is T/F for spool/log */
+ vtype_pinodes, /* partition inodes; value is T/F for spool/log */
+ vtype_cert /* SSL certificate */
#ifndef DISABLE_DKIM
,vtype_dkim /* Lookup of value in DKIM signature */
#endif
- };
+};
+
+/* Type for main variable table */
+
+typedef struct {
+ const char *name;
+ enum vtypes type;
+ void *value;
+} var_entry;
+
+/* Type for entries pointing to address/length pairs. Not currently
+in use. */
+
+typedef struct {
+ uschar **address;
+ int *length;
+} alblock;
+
+static uschar * fn_recipients(void);
/* This table must be kept in alphabetical order. */
static var_entry var_table[] = {
/* WARNING: Do not invent variables whose names start acl_c or acl_m because
they will be confused with user-creatable ACL variables. */
+ { "acl_arg1", vtype_stringptr, &acl_arg[0] },
+ { "acl_arg2", vtype_stringptr, &acl_arg[1] },
+ { "acl_arg3", vtype_stringptr, &acl_arg[2] },
+ { "acl_arg4", vtype_stringptr, &acl_arg[3] },
+ { "acl_arg5", vtype_stringptr, &acl_arg[4] },
+ { "acl_arg6", vtype_stringptr, &acl_arg[5] },
+ { "acl_arg7", vtype_stringptr, &acl_arg[6] },
+ { "acl_arg8", vtype_stringptr, &acl_arg[7] },
+ { "acl_arg9", vtype_stringptr, &acl_arg[8] },
+ { "acl_narg", vtype_int, &acl_narg },
{ "acl_verify_message", vtype_stringptr, &acl_verify_message },
{ "address_data", vtype_stringptr, &deliver_address_data },
{ "address_file", vtype_stringptr, &address_file },
{ "address_pipe", vtype_stringptr, &address_pipe },
+ { "authenticated_fail_id",vtype_stringptr, &authenticated_fail_id },
{ "authenticated_id", vtype_stringptr, &authenticated_id },
{ "authenticated_sender",vtype_stringptr, &authenticated_sender },
{ "authentication_failed",vtype_int, &authentication_failed },
{ "bounce_return_size_limit", vtype_int, &bounce_return_size_limit },
{ "caller_gid", vtype_gid, &real_gid },
{ "caller_uid", vtype_uid, &real_uid },
+ { "callout_address", vtype_stringptr, &callout_address },
{ "compile_date", vtype_stringptr, &version_date },
{ "compile_number", vtype_stringptr, &version_cnumber },
+ { "config_dir", vtype_stringptr, &config_main_directory },
+ { "config_file", vtype_stringptr, &config_main_filename },
{ "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 },
-#endif
#ifndef DISABLE_DKIM
{ "dkim_algo", vtype_dkim, (void *)DKIM_ALGO },
{ "dkim_bodylength", vtype_dkim, (void *)DKIM_BODYLENGTH },
{ "dkim_headernames", vtype_dkim, (void *)DKIM_HEADERNAMES },
{ "dkim_identity", vtype_dkim, (void *)DKIM_IDENTITY },
{ "dkim_key_granularity",vtype_dkim, (void *)DKIM_KEY_GRANULARITY },
+ { "dkim_key_length", vtype_int, &dkim_key_length },
{ "dkim_key_nosubdomains",vtype_dkim, (void *)DKIM_NOSUBDOMAINS },
{ "dkim_key_notes", vtype_dkim, (void *)DKIM_KEY_NOTES },
{ "dkim_key_srvtype", vtype_dkim, (void *)DKIM_KEY_SRVTYPE },
{ "dkim_signers", vtype_stringptr, &dkim_signers },
{ "dkim_verify_reason", vtype_dkim, (void *)DKIM_VERIFY_REASON },
{ "dkim_verify_status", vtype_dkim, (void *)DKIM_VERIFY_STATUS},
+#endif
+#ifdef EXPERIMENTAL_DMARC
+ { "dmarc_ar_header", vtype_stringptr, &dmarc_ar_header },
+ { "dmarc_domain_policy", vtype_stringptr, &dmarc_domain_policy },
+ { "dmarc_status", vtype_stringptr, &dmarc_status },
+ { "dmarc_status_text", vtype_stringptr, &dmarc_status_text },
+ { "dmarc_used_domain", vtype_stringptr, &dmarc_used_domain },
#endif
{ "dnslist_domain", vtype_stringptr, &dnslist_domain },
{ "dnslist_matched", vtype_stringptr, &dnslist_matched },
{ "dnslist_value", vtype_stringptr, &dnslist_value },
{ "domain", vtype_stringptr, &deliver_domain },
{ "domain_data", vtype_stringptr, &deliver_domain_data },
+#ifndef DISABLE_EVENT
+ { "event_data", vtype_stringptr, &event_data },
+
+ /*XXX want to use generic vars for as many of these as possible*/
+ { "event_defer_errno", vtype_int, &event_defer_errno },
+
+ { "event_name", vtype_stringptr, &event_name },
+#endif
{ "exim_gid", vtype_gid, &exim_gid },
{ "exim_path", vtype_stringptr, &exim_path },
{ "exim_uid", vtype_uid, &exim_uid },
-#ifdef WITH_OLD_DEMIME
- { "found_extension", vtype_stringptr, &found_extension },
-#endif
+ { "exim_version", vtype_stringptr, &version_string },
+ { "headers_added", vtype_string_func, &fn_hdrs_added },
{ "home", vtype_stringptr, &deliver_home },
{ "host", vtype_stringptr, &deliver_host },
{ "host_address", vtype_stringptr, &deliver_host_address },
{ "host_data", vtype_stringptr, &host_data },
{ "host_lookup_deferred",vtype_int, &host_lookup_deferred },
{ "host_lookup_failed", vtype_int, &host_lookup_failed },
+ { "host_port", vtype_int, &deliver_host_port },
+ { "initial_cwd", vtype_stringptr, &initial_cwd },
{ "inode", vtype_ino, &deliver_inode },
{ "interface_address", vtype_stringptr, &interface_address },
{ "interface_port", vtype_int, &interface_port },
{ "localhost_number", vtype_int, &host_number },
{ "log_inodes", vtype_pinodes, (void *)FALSE },
{ "log_space", vtype_pspace, (void *)FALSE },
+ { "lookup_dnssec_authenticated",vtype_stringptr,&lookup_dnssec_authenticated},
{ "mailstore_basename", vtype_stringptr, &mailstore_basename },
#ifdef WITH_CONTENT_SCAN
{ "malware_name", vtype_stringptr, &malware_name },
{ "message_id", vtype_stringptr, &message_id },
{ "message_linecount", vtype_int, &message_linecount },
{ "message_size", vtype_int, &message_size },
+#ifdef SUPPORT_I18N
+ { "message_smtputf8", vtype_bool, &message_smtputf8 },
+#endif
#ifdef WITH_CONTENT_SCAN
{ "mime_anomaly_level", vtype_int, &mime_anomaly_level },
{ "mime_anomaly_text", vtype_stringptr, &mime_anomaly_text },
{ "parent_domain", vtype_stringptr, &deliver_domain_parent },
{ "parent_local_part", vtype_stringptr, &deliver_localpart_parent },
{ "pid", vtype_pid, NULL },
+#ifndef DISABLE_PRDR
+ { "prdr_requested", vtype_bool, &prdr_requested },
+#endif
{ "primary_hostname", vtype_stringptr, &primary_hostname },
+#if defined(SUPPORT_PROXY) || defined(SUPPORT_SOCKS)
+ { "proxy_external_address",vtype_stringptr, &proxy_external_address },
+ { "proxy_external_port", vtype_int, &proxy_external_port },
+ { "proxy_local_address", vtype_stringptr, &proxy_local_address },
+ { "proxy_local_port", vtype_int, &proxy_local_port },
+ { "proxy_session", vtype_bool, &proxy_session },
+#endif
{ "prvscheck_address", vtype_stringptr, &prvscheck_address },
{ "prvscheck_keynum", vtype_stringptr, &prvscheck_keynum },
{ "prvscheck_result", vtype_stringptr, &prvscheck_result },
{ "qualify_domain", vtype_stringptr, &qualify_domain_sender },
{ "qualify_recipient", vtype_stringptr, &qualify_domain_recipient },
+ { "queue_name", vtype_stringptr, &queue_name },
{ "rcpt_count", vtype_int, &rcpt_count },
{ "rcpt_defer_count", vtype_int, &rcpt_defer_count },
{ "rcpt_fail_count", vtype_int, &rcpt_fail_count },
{ "received_time", vtype_int, &received_time },
{ "recipient_data", vtype_stringptr, &recipient_data },
{ "recipient_verify_failure",vtype_stringptr,&recipient_verify_failure },
- { "recipients", vtype_recipients, NULL },
+ { "recipients", vtype_string_func, &fn_recipients },
{ "recipients_count", vtype_int, &recipients_count },
#ifdef WITH_CONTENT_SCAN
{ "regex_match_string", vtype_stringptr, ®ex_match_string },
{ "reply_address", vtype_reply, NULL },
{ "return_path", vtype_stringptr, &return_path },
{ "return_size_limit", vtype_int, &bounce_return_size_limit },
+ { "router_name", vtype_stringptr, &router_name },
{ "runrc", vtype_int, &runrc },
{ "self_hostname", vtype_stringptr, &self_hostname },
{ "sender_address", vtype_stringptr, &sender_address },
{ "sender_address_local_part", vtype_localpart, &sender_address },
{ "sender_data", vtype_stringptr, &sender_data },
{ "sender_fullhost", vtype_stringptr, &sender_fullhost },
+ { "sender_helo_dnssec", vtype_bool, &sender_helo_dnssec },
{ "sender_helo_name", vtype_stringptr, &sender_helo_name },
{ "sender_host_address", vtype_stringptr, &sender_host_address },
{ "sender_host_authenticated",vtype_stringptr, &sender_host_authenticated },
+ { "sender_host_dnssec", vtype_bool, &sender_host_dnssec },
{ "sender_host_name", vtype_host_lookup, NULL },
{ "sender_host_port", vtype_int, &sender_host_port },
{ "sender_ident", vtype_stringptr, &sender_ident },
{ "sn8", vtype_filter_int, &filter_sn[8] },
{ "sn9", vtype_filter_int, &filter_sn[9] },
#ifdef WITH_CONTENT_SCAN
+ { "spam_action", vtype_stringptr, &spam_action },
{ "spam_bar", vtype_stringptr, &spam_bar },
{ "spam_report", vtype_stringptr, &spam_report },
{ "spam_score", vtype_stringptr, &spam_score },
{ "srs_status", vtype_stringptr, &srs_status },
#endif
{ "thisaddress", vtype_stringptr, &filter_thisaddress },
- { "tls_bits", vtype_int, &tls_bits },
- { "tls_certificate_verified", vtype_int, &tls_certificate_verified },
- { "tls_cipher", vtype_stringptr, &tls_cipher },
- { "tls_peerdn", vtype_stringptr, &tls_peerdn },
-#ifdef SUPPORT_TLS
- { "tls_sni", vtype_stringptr, &tls_sni },
+
+ /* The non-(in,out) variables are now deprecated */
+ { "tls_bits", vtype_int, &tls_in.bits },
+ { "tls_certificate_verified", vtype_int, &tls_in.certificate_verified },
+ { "tls_cipher", vtype_stringptr, &tls_in.cipher },
+
+ { "tls_in_bits", vtype_int, &tls_in.bits },
+ { "tls_in_certificate_verified", vtype_int, &tls_in.certificate_verified },
+ { "tls_in_cipher", vtype_stringptr, &tls_in.cipher },
+ { "tls_in_ocsp", vtype_int, &tls_in.ocsp },
+ { "tls_in_ourcert", vtype_cert, &tls_in.ourcert },
+ { "tls_in_peercert", vtype_cert, &tls_in.peercert },
+ { "tls_in_peerdn", vtype_stringptr, &tls_in.peerdn },
+#if defined(SUPPORT_TLS)
+ { "tls_in_sni", vtype_stringptr, &tls_in.sni },
+#endif
+ { "tls_out_bits", vtype_int, &tls_out.bits },
+ { "tls_out_certificate_verified", vtype_int,&tls_out.certificate_verified },
+ { "tls_out_cipher", vtype_stringptr, &tls_out.cipher },
+#ifdef EXPERIMENTAL_DANE
+ { "tls_out_dane", vtype_bool, &tls_out.dane_verified },
+#endif
+ { "tls_out_ocsp", vtype_int, &tls_out.ocsp },
+ { "tls_out_ourcert", vtype_cert, &tls_out.ourcert },
+ { "tls_out_peercert", vtype_cert, &tls_out.peercert },
+ { "tls_out_peerdn", vtype_stringptr, &tls_out.peerdn },
+#if defined(SUPPORT_TLS)
+ { "tls_out_sni", vtype_stringptr, &tls_out.sni },
+#endif
+#ifdef EXPERIMENTAL_DANE
+ { "tls_out_tlsa_usage", vtype_int, &tls_out.tlsa_usage },
+#endif
+
+ { "tls_peerdn", vtype_stringptr, &tls_in.peerdn }, /* mind the alphabetical order! */
+#if defined(SUPPORT_TLS)
+ { "tls_sni", vtype_stringptr, &tls_in.sni }, /* mind the alphabetical order! */
#endif
+
{ "tod_bsdinbox", vtype_todbsdin, NULL },
{ "tod_epoch", vtype_tode, NULL },
{ "tod_epoch_l", vtype_todel, NULL },
{ "tod_logfile", vtype_todlf, NULL },
{ "tod_zone", vtype_todzone, NULL },
{ "tod_zulu", vtype_todzulu, NULL },
+ { "transport_name", vtype_stringptr, &transport_name },
{ "value", vtype_stringptr, &lookup_value },
+ { "verify_mode", vtype_stringptr, &verify_mode },
{ "version_number", vtype_stringptr, &version_string },
{ "warn_message_delay", vtype_stringptr, &warnmsg_delay },
{ "warn_message_recipient",vtype_stringptr, &warnmsg_recipients },
{ "warnmsg_recipients", vtype_stringptr, &warnmsg_recipients }
};
-static int var_table_size = sizeof(var_table)/sizeof(var_entry);
+static int var_table_size = nelem(var_table);
static uschar var_buffer[256];
static BOOL malformed_header;
}
+
+static uschar * base32_chars = US"abcdefghijklmnopqrstuvwxyz234567";
+
/*************************************************
* Binary chop search on a table *
*************************************************/
/* This function is called to expand a string, and test the result for a "true"
or "false" value. Failure of the expansion yields FALSE; logged unless it was a
-forced fail or lookup defer. All store used by the function can be released on
-exit.
+forced fail or lookup defer.
+
+We used to release all store used, but this is not not safe due
+to ${dlfunc } and ${acl }. In any case expand_string_internal()
+is reasonably careful to release what it can.
The actual false-value tests should be replicated for ECOND_BOOL_LAX.
expand_check_condition(uschar *condition, uschar *m1, uschar *m2)
{
int rc;
-void *reset_point = store_get(0);
uschar *ss = expand_string(condition);
if (ss == NULL)
{
}
rc = ss[0] != 0 && Ustrcmp(ss, "0") != 0 && strcmpic(ss, US"no") != 0 &&
strcmpic(ss, US"false") != 0;
-store_reset(reset_point);
return rc;
}
#ifdef HAVE_ARC4RANDOM
/* cryptographically strong randomness, common on *BSD platforms, not
so much elsewhere. Alas. */
+#ifndef NOT_HAVE_ARC4RANDOM_STIR
arc4random_stir();
+#endif
#elif defined(HAVE_SRANDOM) || defined(HAVE_SRANDOMDEV)
#ifdef HAVE_SRANDOMDEV
/* uses random(4) for seeding */
Ustrchr() yields non-NULL if the character is zero (which is not something
I expected). */
-static uschar *
-read_name(uschar *name, int max, uschar *s, uschar *extras)
+static const uschar *
+read_name(uschar *name, int max, const uschar *s, uschar *extras)
{
int ptr = 0;
while (*s != 0 && (isalnum(*s) || Ustrchr(extras, *s) != NULL))
Returns: a pointer to the first character after the header name
*/
-static uschar *
-read_header_name(uschar *name, int max, uschar *s)
+static const uschar *
+read_header_name(uschar *name, int max, const uschar *s)
{
int prelen = Ustrchr(name, '_') - name + 1;
int ptr = Ustrlen(name) - prelen;
Returns: a pointer to the character after the last digit
*/
+/*XXX consider expanding to int_eximarith_t. But the test for
+"overbig numbers" in 0002 still needs to overflow it. */
static uschar *
read_number(int *n, uschar *s)
return s;
}
+static const uschar *
+read_cnumber(int *n, const uschar *s)
+{
+*n = 0;
+while (isdigit(*s)) *n = *n * 10 + (*s++ - '0');
+return s;
+}
+
/*************************************************
*/
static uschar *
-expand_getkeyed(uschar *key, uschar *s)
+expand_getkeyed(uschar *key, const uschar *s)
{
int length = Ustrlen(key);
while (isspace(*s)) s++;
{
int dkeylength;
uschar *data;
- uschar *dkey = s;
+ const uschar *dkey = s;
while (*s != 0 && *s != '=' && !isspace(*s)) s++;
dkeylength = s - dkey;
+static var_entry *
+find_var_ent(uschar * name)
+{
+int first = 0;
+int last = var_table_size;
+
+while (last > first)
+ {
+ int middle = (first + last)/2;
+ int c = Ustrcmp(name, var_table[middle].name);
+
+ if (c > 0) { first = middle + 1; continue; }
+ if (c < 0) { last = middle; continue; }
+ return &var_table[middle];
+ }
+return NULL;
+}
/*************************************************
* Extract numbered subfield from string *
}
+static uschar *
+expand_getlistele(int field, const uschar * list)
+{
+const uschar * tlist= list;
+int sep= 0;
+uschar dummy;
+
+if(field<0)
+ {
+ for(field++; string_nextinlist(&tlist, &sep, &dummy, 1); ) field++;
+ sep= 0;
+ }
+if(field==0) return NULL;
+while(--field>0 && (string_nextinlist(&list, &sep, &dummy, 1))) ;
+return string_nextinlist(&list, &sep, NULL, 0);
+}
+
+
+/* Certificate fields, by name. Worry about by-OID later */
+/* Names are chosen to not have common prefixes */
+
+#ifdef SUPPORT_TLS
+typedef struct
+{
+uschar * name;
+int namelen;
+uschar * (*getfn)(void * cert, uschar * mod);
+} certfield;
+static certfield certfields[] =
+{ /* linear search; no special order */
+ { US"version", 7, &tls_cert_version },
+ { US"serial_number", 13, &tls_cert_serial_number },
+ { US"subject", 7, &tls_cert_subject },
+ { US"notbefore", 9, &tls_cert_not_before },
+ { US"notafter", 8, &tls_cert_not_after },
+ { US"issuer", 6, &tls_cert_issuer },
+ { US"signature", 9, &tls_cert_signature },
+ { US"sig_algorithm", 13, &tls_cert_signature_algorithm },
+ { US"subj_altname", 12, &tls_cert_subject_altname },
+ { US"ocsp_uri", 8, &tls_cert_ocsp_uri },
+ { US"crl_uri", 7, &tls_cert_crl_uri },
+};
+
+static uschar *
+expand_getcertele(uschar * field, uschar * certvar)
+{
+var_entry * vp;
+certfield * cp;
+
+if (!(vp = find_var_ent(certvar)))
+ {
+ expand_string_message =
+ string_sprintf("no variable named \"%s\"", certvar);
+ return NULL; /* Unknown variable name */
+ }
+/* NB this stops us passing certs around in variable. Might
+want to do that in future */
+if (vp->type != vtype_cert)
+ {
+ expand_string_message =
+ string_sprintf("\"%s\" is not a certificate", certvar);
+ return NULL; /* Unknown variable name */
+ }
+if (!*(void **)vp->value)
+ return NULL;
+
+if (*field >= '0' && *field <= '9')
+ return tls_cert_ext_by_oid(*(void **)vp->value, field, 0);
+
+for(cp = certfields;
+ cp < certfields + nelem(certfields);
+ cp++)
+ if (Ustrncmp(cp->name, field, cp->namelen) == 0)
+ {
+ uschar * modifier = *(field += cp->namelen) == ','
+ ? ++field : NULL;
+ return (*cp->getfn)( *(void **)vp->value, modifier );
+ }
+
+expand_string_message =
+ string_sprintf("bad field selector \"%s\" for certextract", field);
+return NULL;
+}
+#endif /*SUPPORT_TLS*/
/*************************************************
* Extract a substring from a string *
while (*s != 0)
{
- if (i == 0) i = sizeof(prime)/sizeof(int) - 1;
+ if (i == 0) i = nelem(prime) - 1;
total += prime[i--] * (unsigned int)(*s++);
}
+/*************************************************
+* Return list of recipients *
+*************************************************/
+/* A recipients list is available only during system message filtering,
+during ACL processing after DATA, and while expanding pipe commands
+generated from a system filter, but not elsewhere. */
+
+static uschar *
+fn_recipients(void)
+{
+if (!enable_dollar_recipients) return NULL; else
+ {
+ int size = 128;
+ int ptr = 0;
+ int i;
+ uschar * s = store_get(size);
+ for (i = 0; i < recipients_count; i++)
+ {
+ if (i != 0) s = string_catn(s, &size, &ptr, US", ", 2);
+ s = string_cat(s, &size, &ptr, recipients_list[i].address);
+ }
+ s[ptr] = 0; /* string_cat() leaves room */
+ return s;
+ }
+}
+
+
/*************************************************
* Find value of a variable *
*************************************************/
static uschar *
find_variable(uschar *name, BOOL exists_only, BOOL skipping, int *newsize)
{
-int first = 0;
-int last = var_table_size;
+var_entry * vp;
+uschar *s, *domain;
+uschar **ss;
+void * val;
/* Handle ACL variables, whose names are of the form acl_cxxx or acl_mxxx.
Originally, xxx had to be a number in the range 0-9 (later 0-19), but from
{
tree_node *node =
tree_search((name[4] == 'c')? acl_var_c : acl_var_m, name + 4);
- return (node == NULL)? (strict_acl_vars? NULL : US"") : node->data.ptr;
+ return node ? node->data.ptr : strict_acl_vars ? NULL : US"";
}
/* Handle $auth<n> variables. */
uschar *endptr;
int n = Ustrtoul(name + 4, &endptr, 10);
if (*endptr == 0 && n != 0 && n <= AUTH_VARS)
- return (auth_vars[n-1] == NULL)? US"" : auth_vars[n-1];
+ return !auth_vars[n-1] ? US"" : auth_vars[n-1];
+ }
+else if (Ustrncmp(name, "regex", 5) == 0)
+ {
+ uschar *endptr;
+ int n = Ustrtoul(name + 5, &endptr, 10);
+ if (*endptr == 0 && n != 0 && n <= REGEX_VARS)
+ return !regex_vars[n-1] ? US"" : regex_vars[n-1];
}
/* For all other variables, search the table */
-while (last > first)
- {
- uschar *s, *domain;
- uschar **ss;
- int middle = (first + last)/2;
- int c = Ustrcmp(name, var_table[middle].name);
-
- if (c > 0) { first = middle + 1; continue; }
- if (c < 0) { last = middle; continue; }
+if (!(vp = find_var_ent(name)))
+ return NULL; /* Unknown variable name */
- /* Found an existing variable. If in skipping state, the value isn't needed,
- and we want to avoid processing (such as looking up the host name). */
+/* Found an existing variable. If in skipping state, the value isn't needed,
+and we want to avoid processing (such as looking up the host name). */
- if (skipping) return US"";
+if (skipping)
+ return US"";
- switch (var_table[middle].type)
- {
- case vtype_filter_int:
+val = vp->value;
+switch (vp->type)
+ {
+ case vtype_filter_int:
if (!filter_running) return NULL;
/* Fall through */
/* VVVVVVVVVVVV */
- case vtype_int:
- sprintf(CS var_buffer, "%d", *(int *)(var_table[middle].value)); /* Integer */
+ case vtype_int:
+ sprintf(CS var_buffer, "%d", *(int *)(val)); /* Integer */
return var_buffer;
- case vtype_ino:
- sprintf(CS var_buffer, "%ld", (long int)(*(ino_t *)(var_table[middle].value))); /* Inode */
+ case vtype_ino:
+ sprintf(CS var_buffer, "%ld", (long int)(*(ino_t *)(val))); /* Inode */
return var_buffer;
- case vtype_gid:
- sprintf(CS var_buffer, "%ld", (long int)(*(gid_t *)(var_table[middle].value))); /* gid */
+ case vtype_gid:
+ sprintf(CS var_buffer, "%ld", (long int)(*(gid_t *)(val))); /* gid */
return var_buffer;
- case vtype_uid:
- sprintf(CS var_buffer, "%ld", (long int)(*(uid_t *)(var_table[middle].value))); /* uid */
+ case vtype_uid:
+ sprintf(CS var_buffer, "%ld", (long int)(*(uid_t *)(val))); /* uid */
return var_buffer;
- case vtype_stringptr: /* Pointer to string */
- s = *((uschar **)(var_table[middle].value));
- return (s == NULL)? US"" : s;
+ case vtype_bool:
+ sprintf(CS var_buffer, "%s", *(BOOL *)(val) ? "yes" : "no"); /* bool */
+ return var_buffer;
+
+ case vtype_stringptr: /* Pointer to string */
+ return (s = *((uschar **)(val))) ? s : US"";
- case vtype_pid:
+ case vtype_pid:
sprintf(CS var_buffer, "%d", (int)getpid()); /* pid */
return var_buffer;
- case vtype_load_avg:
+ case vtype_load_avg:
sprintf(CS var_buffer, "%d", OS_GETLOADAVG()); /* load_average */
return var_buffer;
- case vtype_host_lookup: /* Lookup if not done so */
+ case vtype_host_lookup: /* Lookup if not done so */
if (sender_host_name == NULL && sender_host_address != NULL &&
- !host_lookup_failed && host_name_lookup() == OK)
+ !host_lookup_failed && host_name_lookup() == OK)
host_build_sender_fullhost();
return (sender_host_name == NULL)? US"" : sender_host_name;
- case vtype_localpart: /* Get local part from address */
- s = *((uschar **)(var_table[middle].value));
+ case vtype_localpart: /* Get local part from address */
+ s = *((uschar **)(val));
if (s == NULL) return US"";
domain = Ustrrchr(s, '@');
if (domain == NULL) return s;
if (domain - s > sizeof(var_buffer) - 1)
- log_write(0, LOG_MAIN|LOG_PANIC_DIE, "local part longer than %d in "
- "string expansion", sizeof(var_buffer));
+ log_write(0, LOG_MAIN|LOG_PANIC_DIE, "local part longer than " SIZE_T_FMT
+ " in string expansion", sizeof(var_buffer));
Ustrncpy(var_buffer, s, domain - s);
var_buffer[domain - s] = 0;
return var_buffer;
- case vtype_domain: /* Get domain from address */
- s = *((uschar **)(var_table[middle].value));
+ case vtype_domain: /* Get domain from address */
+ s = *((uschar **)(val));
if (s == NULL) return US"";
domain = Ustrrchr(s, '@');
return (domain == NULL)? US"" : domain + 1;
- case vtype_msgheaders:
+ case vtype_msgheaders:
return find_header(NULL, exists_only, newsize, FALSE, NULL);
- case vtype_msgheaders_raw:
+ case vtype_msgheaders_raw:
return find_header(NULL, exists_only, newsize, TRUE, NULL);
- case vtype_msgbody: /* Pointer to msgbody string */
- case vtype_msgbody_end: /* Ditto, the end of the msg */
- ss = (uschar **)(var_table[middle].value);
+ case vtype_msgbody: /* Pointer to msgbody string */
+ case vtype_msgbody_end: /* Ditto, the end of the msg */
+ ss = (uschar **)(val);
if (*ss == NULL && deliver_datafile >= 0) /* Read body when needed */
{
uschar *body;
if (len > message_size) len = message_size;
*ss = body = store_malloc(len+1);
body[0] = 0;
- if (var_table[middle].type == vtype_msgbody_end)
- {
- struct stat statbuf;
- if (fstat(deliver_datafile, &statbuf) == 0)
- {
- start_offset = statbuf.st_size - len;
- if (start_offset < SPOOL_DATA_START_OFFSET)
- start_offset = SPOOL_DATA_START_OFFSET;
- }
- }
- lseek(deliver_datafile, start_offset, SEEK_SET);
+ if (vp->type == vtype_msgbody_end)
+ {
+ struct stat statbuf;
+ if (fstat(deliver_datafile, &statbuf) == 0)
+ {
+ start_offset = statbuf.st_size - len;
+ if (start_offset < SPOOL_DATA_START_OFFSET)
+ start_offset = SPOOL_DATA_START_OFFSET;
+ }
+ }
+ if (lseek(deliver_datafile, start_offset, SEEK_SET) < 0)
+ log_write(0, LOG_MAIN|LOG_PANIC_DIE, "deliver_datafile lseek: %s",
+ strerror(errno));
len = read(deliver_datafile, body, len);
if (len > 0)
- {
- body[len] = 0;
- if (message_body_newlines) /* Separate loops for efficiency */
- {
- while (len > 0)
- { if (body[--len] == 0) body[len] = ' '; }
- }
- else
- {
- while (len > 0)
- { if (body[--len] == '\n' || body[len] == 0) body[len] = ' '; }
- }
- }
+ {
+ body[len] = 0;
+ if (message_body_newlines) /* Separate loops for efficiency */
+ while (len > 0)
+ { if (body[--len] == 0) body[len] = ' '; }
+ else
+ while (len > 0)
+ { if (body[--len] == '\n' || body[len] == 0) body[len] = ' '; }
+ }
}
return (*ss == NULL)? US"" : *ss;
- case vtype_todbsdin: /* BSD inbox time of day */
+ case vtype_todbsdin: /* BSD inbox time of day */
return tod_stamp(tod_bsdin);
- case vtype_tode: /* Unix epoch time of day */
+ case vtype_tode: /* Unix epoch time of day */
return tod_stamp(tod_epoch);
- case vtype_todel: /* Unix epoch/usec time of day */
+ case vtype_todel: /* Unix epoch/usec time of day */
return tod_stamp(tod_epoch_l);
- case vtype_todf: /* Full time of day */
+ case vtype_todf: /* Full time of day */
return tod_stamp(tod_full);
- case vtype_todl: /* Log format time of day */
+ case vtype_todl: /* Log format time of day */
return tod_stamp(tod_log_bare); /* (without timezone) */
- case vtype_todzone: /* Time zone offset only */
+ case vtype_todzone: /* Time zone offset only */
return tod_stamp(tod_zone);
- case vtype_todzulu: /* Zulu time */
+ case vtype_todzulu: /* Zulu time */
return tod_stamp(tod_zulu);
- case vtype_todlf: /* Log file datestamp tod */
+ case vtype_todlf: /* Log file datestamp tod */
return tod_stamp(tod_log_datestamp_daily);
- case vtype_reply: /* Get reply address */
+ case vtype_reply: /* Get reply address */
s = find_header(US"reply-to:", exists_only, newsize, TRUE,
headers_charset);
if (s != NULL) while (isspace(*s)) s++;
}
return (s == NULL)? US"" : s;
- /* A recipients list is available only during system message filtering,
- during ACL processing after DATA, and while expanding pipe commands
- generated from a system filter, but not elsewhere. */
+ case vtype_string_func:
+ {
+ uschar * (*fn)() = val;
+ return fn();
+ }
- case vtype_recipients:
- if (!enable_dollar_recipients) return NULL; else
- {
- int size = 128;
- int ptr = 0;
- int i;
- s = store_get(size);
- for (i = 0; i < recipients_count; i++)
- {
- if (i != 0) s = string_cat(s, &size, &ptr, US", ", 2);
- s = string_cat(s, &size, &ptr, recipients_list[i].address,
- Ustrlen(recipients_list[i].address));
- }
- s[ptr] = 0; /* string_cat() leaves room */
- }
- return s;
+ case vtype_pspace:
+ {
+ int inodes;
+ sprintf(CS var_buffer, "%d",
+ receive_statvfs(val == (void *)TRUE, &inodes));
+ }
+ return var_buffer;
- case vtype_pspace:
- {
- int inodes;
- sprintf(CS var_buffer, "%d",
- receive_statvfs(var_table[middle].value == (void *)TRUE, &inodes));
- }
- return var_buffer;
+ case vtype_pinodes:
+ {
+ int inodes;
+ (void) receive_statvfs(val == (void *)TRUE, &inodes);
+ sprintf(CS var_buffer, "%d", inodes);
+ }
+ return var_buffer;
- case vtype_pinodes:
- {
- int inodes;
- (void) receive_statvfs(var_table[middle].value == (void *)TRUE, &inodes);
- sprintf(CS var_buffer, "%d", inodes);
- }
- return var_buffer;
+ case vtype_cert:
+ return *(void **)val ? US"<cert>" : US"";
- #ifndef DISABLE_DKIM
- case vtype_dkim:
- return dkim_exim_expand_query((int)(long)var_table[middle].value);
- #endif
+#ifndef DISABLE_DKIM
+ case vtype_dkim:
+ return dkim_exim_expand_query((int)(long)val);
+#endif
- }
}
-return NULL; /* Unknown variable name */
+return NULL; /* Unknown variable. Silences static checkers. */
+}
+
+
+
+
+void
+modify_variable(uschar *name, void * value)
+{
+var_entry * vp;
+if ((vp = find_var_ent(name))) vp->value = value;
+return; /* Unknown variable name, fail silently */
}
+
/*************************************************
* Read and expand substrings *
*************************************************/
skipping the skipping flag
check_end if TRUE, check for final '}'
name name of item, for error message
+ resetok if not NULL, pointer to flag - write FALSE if unsafe to reset
+ the store.
Returns: 0 OK; string pointer updated
1 curly bracketing error (too few arguments)
*/
static int
-read_subs(uschar **sub, int n, int m, uschar **sptr, BOOL skipping,
- BOOL check_end, uschar *name)
+read_subs(uschar **sub, int n, int m, const uschar **sptr, BOOL skipping,
+ BOOL check_end, uschar *name, BOOL *resetok)
{
int i;
-uschar *s = *sptr;
+const uschar *s = *sptr;
while (isspace(*s)) s++;
for (i = 0; i < n; i++)
{
if (*s != '{')
{
- if (i < m) return 1;
+ if (i < m)
+ {
+ expand_string_message = string_sprintf("Not enough arguments for '%s' "
+ "(min is %d)", name, m);
+ return 1;
+ }
sub[i] = NULL;
break;
}
- sub[i] = expand_string_internal(s+1, TRUE, &s, skipping, TRUE);
- if (sub[i] == NULL) return 3;
+ if (!(sub[i] = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, resetok)))
+ return 3;
if (*s++ != '}') return 1;
while (isspace(*s)) s++;
}
{
if (s[-1] == '{')
{
- expand_string_message = string_sprintf("Too many arguments for \"%s\" "
+ expand_string_message = string_sprintf("Too many arguments for '%s' "
"(max is %d)", name, n);
return 2;
}
+ expand_string_message = string_sprintf("missing '}' after '%s'", name);
return 1;
}
+/*
+Load args from sub array to globals, and call acl_check().
+Sub array will be corrupted on return.
+
+Returns: OK access is granted by an ACCEPT verb
+ DISCARD access is (apparently) granted by a DISCARD verb
+ FAIL access is denied
+ FAIL_DROP access is denied; drop the connection
+ DEFER can't tell at the moment
+ ERROR disaster
+*/
+static int
+eval_acl(uschar ** sub, int nsub, uschar ** user_msgp)
+{
+int i;
+int sav_narg = acl_narg;
+int ret;
+uschar * dummy_logmsg;
+extern int acl_where;
+
+if(--nsub > nelem(acl_arg)) nsub = nelem(acl_arg);
+for (i = 0; i < nsub && sub[i+1]; i++)
+ {
+ uschar * tmp = acl_arg[i];
+ acl_arg[i] = sub[i+1]; /* place callers args in the globals */
+ sub[i+1] = tmp; /* stash the old args using our caller's storage */
+ }
+acl_narg = i;
+while (i < nsub)
+ {
+ sub[i+1] = acl_arg[i];
+ acl_arg[i++] = NULL;
+ }
+
+DEBUG(D_expand)
+ debug_printf("expanding: acl: %s arg: %s%s\n",
+ sub[0],
+ acl_narg>0 ? acl_arg[0] : US"<none>",
+ acl_narg>1 ? " +more" : "");
+
+ret = acl_eval(acl_where, sub[0], user_msgp, &dummy_logmsg);
+
+for (i = 0; i < nsub; i++)
+ acl_arg[i] = sub[i+1]; /* restore old args */
+acl_narg = sav_narg;
+
+return ret;
+}
+
+
+
+
/*************************************************
* Read and evaluate a condition *
*************************************************/
/*
Arguments:
s points to the start of the condition text
+ resetok points to a BOOL which is written false if it is unsafe to
+ free memory. Certain condition types (acl) may have side-effect
+ allocation which must be preserved.
yield points to a BOOL to hold the result of the condition test;
if NULL, we are just reading through a condition that is
part of an "or" combination to check syntax, or in a state
NULL after an error
*/
-static uschar *
-eval_condition(uschar *s, BOOL *yield)
+static const uschar *
+eval_condition(const uschar *s, BOOL *resetok, BOOL *yield)
{
BOOL testfor = TRUE;
BOOL tempcond, combined_cond;
int_eximarith_t num[2];
struct stat statbuf;
uschar name[256];
-uschar *sub[4];
+const uschar *sub[10];
const pcre *re;
const uschar *rerror;
/* Find which condition we are dealing with, and switch on it */
-cond_type = chop_match(name, cond_table, sizeof(cond_table)/sizeof(uschar *));
+cond_type = chop_match(name, cond_table, nelem(cond_table));
switch(cond_type)
{
/* def: tests for a non-empty variable, or for the existence of a header. If
Ustrncmp(name, "bheader_", 8) == 0)
{
s = read_header_name(name, 256, s);
+ /* {-for-text-editors */
if (Ustrchr(name, '}') != NULL) malformed_header = TRUE;
if (yield != NULL) *yield =
(find_header(name, TRUE, NULL, FALSE, NULL) != NULL) == testfor;
case ECOND_PWCHECK:
while (isspace(*s)) s++;
- if (*s != '{') goto COND_FAILED_CURLY_START;
+ if (*s != '{') goto COND_FAILED_CURLY_START; /* }-for-text-editors */
- sub[0] = expand_string_internal(s+1, TRUE, &s, yield == NULL, TRUE);
+ sub[0] = expand_string_internal(s+1, TRUE, &s, yield == NULL, TRUE, resetok);
if (sub[0] == NULL) return NULL;
+ /* {-for-text-editors */
if (*s++ != '}') goto COND_FAILED_CURLY_END;
if (yield == NULL) return s; /* No need to run the test if skipping */
return s;
+ /* call ACL (in a conditional context). Accept true, deny false.
+ Defer is a forced-fail. Anything set by message= goes to $value.
+ Up to ten parameters are used; we use the braces round the name+args
+ like the saslauthd condition does, to permit a variable number of args.
+ See also the expansion-item version EITEM_ACL and the traditional
+ acl modifier ACLC_ACL.
+ Since the ACL may allocate new global variables, tell our caller to not
+ reclaim memory.
+ */
+
+ case ECOND_ACL:
+ /* ${if acl {{name}{arg1}{arg2}...} {yes}{no}} */
+ {
+ uschar *sub[10];
+ uschar *user_msg;
+ BOOL cond = FALSE;
+ int size = 0;
+ int ptr = 0;
+
+ while (isspace(*s)) s++;
+ if (*s++ != '{') goto COND_FAILED_CURLY_START; /*}*/
+
+ switch(read_subs(sub, nelem(sub), 1,
+ &s, yield == NULL, TRUE, US"acl", resetok))
+ {
+ case 1: expand_string_message = US"too few arguments or bracketing "
+ "error for acl";
+ case 2:
+ case 3: return NULL;
+ }
+
+ *resetok = FALSE; /* eval_acl() might allocate; do not reclaim */
+ if (yield != NULL) switch(eval_acl(sub, nelem(sub), &user_msg))
+ {
+ case OK:
+ cond = TRUE;
+ case FAIL:
+ lookup_value = NULL;
+ if (user_msg)
+ {
+ lookup_value = string_cat(NULL, &size, &ptr, user_msg);
+ lookup_value[ptr] = '\0';
+ }
+ *yield = cond == testfor;
+ break;
+
+ case DEFER:
+ expand_string_forcedfail = TRUE;
+ /*FALLTHROUGH*/
+ default:
+ expand_string_message = string_sprintf("error from acl \"%s\"", sub[0]);
+ return NULL;
+ }
+ return s;
+ }
+
+
/* saslauthd: does Cyrus saslauthd authentication. Four parameters are used:
- ${if saslauthd {{username}{password}{service}{realm}} {yes}[no}}
+ ${if saslauthd {{username}{password}{service}{realm}} {yes}{no}}
However, the last two are optional. That is why the whole set is enclosed
- in their own set or braces. */
+ in their own set of braces. */
case ECOND_SASLAUTHD:
- #ifndef CYRUS_SASLAUTHD_SOCKET
- goto COND_FAILED_NOT_COMPILED;
- #else
- while (isspace(*s)) s++;
- if (*s++ != '{') goto COND_FAILED_CURLY_START;
- switch(read_subs(sub, 4, 2, &s, yield == NULL, TRUE, US"saslauthd"))
- {
- case 1: expand_string_message = US"too few arguments or bracketing "
- "error for saslauthd";
- case 2:
- case 3: return NULL;
- }
- if (sub[2] == NULL) sub[3] = NULL; /* realm if no service */
- if (yield != NULL)
+#ifndef CYRUS_SASLAUTHD_SOCKET
+ goto COND_FAILED_NOT_COMPILED;
+#else
{
- int rc;
- rc = auth_call_saslauthd(sub[0], sub[1], sub[2], sub[3],
- &expand_string_message);
- if (rc == ERROR || rc == DEFER) return NULL;
- *yield = (rc == OK) == testfor;
+ uschar *sub[4];
+ while (isspace(*s)) s++;
+ if (*s++ != '{') goto COND_FAILED_CURLY_START; /* }-for-text-editors */
+ switch(read_subs(sub, nelem(sub), 2, &s, yield == NULL, TRUE, US"saslauthd",
+ resetok))
+ {
+ case 1: expand_string_message = US"too few arguments or bracketing "
+ "error for saslauthd";
+ case 2:
+ case 3: return NULL;
+ }
+ if (sub[2] == NULL) sub[3] = NULL; /* realm if no service */
+ if (yield != NULL)
+ {
+ int rc = auth_call_saslauthd(sub[0], sub[1], sub[2], sub[3],
+ &expand_string_message);
+ if (rc == ERROR || rc == DEFER) return NULL;
+ *yield = (rc == OK) == testfor;
+ }
+ return s;
}
- return s;
- #endif /* CYRUS_SASLAUTHD_SOCKET */
+#endif /* CYRUS_SASLAUTHD_SOCKET */
/* symbolic operators for numeric and string comparison, and a number of
return NULL;
}
sub[i] = expand_string_internal(s+1, TRUE, &s, yield == NULL,
- honour_dollar);
+ honour_dollar, resetok);
if (sub[i] == NULL) return NULL;
if (*s++ != '}') goto COND_FAILED_CURLY_END;
checking for them individually. */
if (!isalpha(name[0]) && yield != NULL)
- {
if (sub[i][0] == 0)
{
num[i] = 0;
}
else
{
- num[i] = expand_string_integer(sub[i], FALSE);
+ num[i] = expanded_string_integer(sub[i], FALSE);
if (expand_string_message != NULL) return NULL;
}
- }
}
/* Result not required */
{
case ECOND_NUM_E:
case ECOND_NUM_EE:
- *yield = (num[0] == num[1]) == testfor;
+ tempcond = (num[0] == num[1]);
break;
case ECOND_NUM_G:
- *yield = (num[0] > num[1]) == testfor;
+ tempcond = (num[0] > num[1]);
break;
case ECOND_NUM_GE:
- *yield = (num[0] >= num[1]) == testfor;
+ tempcond = (num[0] >= num[1]);
break;
case ECOND_NUM_L:
- *yield = (num[0] < num[1]) == testfor;
+ tempcond = (num[0] < num[1]);
break;
case ECOND_NUM_LE:
- *yield = (num[0] <= num[1]) == testfor;
+ tempcond = (num[0] <= num[1]);
break;
case ECOND_STR_LT:
- *yield = (Ustrcmp(sub[0], sub[1]) < 0) == testfor;
+ tempcond = (Ustrcmp(sub[0], sub[1]) < 0);
break;
case ECOND_STR_LTI:
- *yield = (strcmpic(sub[0], sub[1]) < 0) == testfor;
+ tempcond = (strcmpic(sub[0], sub[1]) < 0);
break;
case ECOND_STR_LE:
- *yield = (Ustrcmp(sub[0], sub[1]) <= 0) == testfor;
+ tempcond = (Ustrcmp(sub[0], sub[1]) <= 0);
break;
case ECOND_STR_LEI:
- *yield = (strcmpic(sub[0], sub[1]) <= 0) == testfor;
+ tempcond = (strcmpic(sub[0], sub[1]) <= 0);
break;
case ECOND_STR_EQ:
- *yield = (Ustrcmp(sub[0], sub[1]) == 0) == testfor;
+ tempcond = (Ustrcmp(sub[0], sub[1]) == 0);
break;
case ECOND_STR_EQI:
- *yield = (strcmpic(sub[0], sub[1]) == 0) == testfor;
+ tempcond = (strcmpic(sub[0], sub[1]) == 0);
break;
case ECOND_STR_GT:
- *yield = (Ustrcmp(sub[0], sub[1]) > 0) == testfor;
+ tempcond = (Ustrcmp(sub[0], sub[1]) > 0);
break;
case ECOND_STR_GTI:
- *yield = (strcmpic(sub[0], sub[1]) > 0) == testfor;
+ tempcond = (strcmpic(sub[0], sub[1]) > 0);
break;
case ECOND_STR_GE:
- *yield = (Ustrcmp(sub[0], sub[1]) >= 0) == testfor;
+ tempcond = (Ustrcmp(sub[0], sub[1]) >= 0);
break;
case ECOND_STR_GEI:
- *yield = (strcmpic(sub[0], sub[1]) >= 0) == testfor;
+ tempcond = (strcmpic(sub[0], sub[1]) >= 0);
break;
case ECOND_MATCH: /* Regular expression match */
"\"%s\": %s at offset %d", sub[1], rerror, roffset);
return NULL;
}
- *yield = regex_match_and_setup(re, sub[0], 0, -1) == testfor;
+ tempcond = regex_match_and_setup(re, sub[0], 0, -1);
break;
case ECOND_MATCH_ADDRESS: /* Match in an address list */
switch(rc)
{
case OK:
- *yield = testfor;
+ tempcond = TRUE;
break;
case FAIL:
- *yield = !testfor;
+ tempcond = FALSE;
break;
case DEFER:
/* Various "encrypted" comparisons. If the second string starts with
"{" then an encryption type is given. Default to crypt() or crypt16()
(build-time choice). */
+ /* }-for-text-editors */
case ECOND_CRYPTEQ:
#ifndef SUPPORT_CRYPTEQ
uschar digest[16];
md5_start(&base);
- md5_end(&base, (uschar *)sub[0], Ustrlen(sub[0]), digest);
+ md5_end(&base, sub[0], Ustrlen(sub[0]), digest);
/* If the length that we are comparing against is 24, the MD5 digest
is expressed as a base64 string. This is the way LDAP does it. However,
if (sublen == 24)
{
- uschar *coded = auth_b64encode((uschar *)digest, 16);
+ uschar *coded = b64encode(digest, 16);
DEBUG(D_auth) debug_printf("crypteq: using MD5+B64 hashing\n"
" subject=%s\n crypted=%s\n", coded, sub[1]+5);
- *yield = (Ustrcmp(coded, sub[1]+5) == 0) == testfor;
+ tempcond = (Ustrcmp(coded, sub[1]+5) == 0);
}
else if (sublen == 32)
{
coded[32] = 0;
DEBUG(D_auth) debug_printf("crypteq: using MD5+hex hashing\n"
" subject=%s\n crypted=%s\n", coded, sub[1]+5);
- *yield = (strcmpic(coded, sub[1]+5) == 0) == testfor;
+ tempcond = (strcmpic(coded, sub[1]+5) == 0);
}
else
{
DEBUG(D_auth) debug_printf("crypteq: length for MD5 not 24 or 32: "
"fail\n crypted=%s\n", sub[1]+5);
- *yield = !testfor;
+ tempcond = FALSE;
}
}
else if (strncmpic(sub[1], US"{sha1}", 6) == 0)
{
int sublen = Ustrlen(sub[1]+6);
- sha1 base;
+ hctx h;
uschar digest[20];
- sha1_start(&base);
- sha1_end(&base, (uschar *)sub[0], Ustrlen(sub[0]), digest);
+ sha1_start(&h);
+ sha1_end(&h, sub[0], Ustrlen(sub[0]), digest);
/* If the length that we are comparing against is 28, assume the SHA1
digest is expressed as a base64 string. If the length is 40, assume a
if (sublen == 28)
{
- uschar *coded = auth_b64encode((uschar *)digest, 20);
+ uschar *coded = b64encode(digest, 20);
DEBUG(D_auth) debug_printf("crypteq: using SHA1+B64 hashing\n"
" subject=%s\n crypted=%s\n", coded, sub[1]+6);
- *yield = (Ustrcmp(coded, sub[1]+6) == 0) == testfor;
+ tempcond = (Ustrcmp(coded, sub[1]+6) == 0);
}
else if (sublen == 40)
{
coded[40] = 0;
DEBUG(D_auth) debug_printf("crypteq: using SHA1+hex hashing\n"
" subject=%s\n crypted=%s\n", coded, sub[1]+6);
- *yield = (strcmpic(coded, sub[1]+6) == 0) == testfor;
+ tempcond = (strcmpic(coded, sub[1]+6) == 0);
}
else
{
DEBUG(D_auth) debug_printf("crypteq: length for SHA-1 not 28 or 40: "
"fail\n crypted=%s\n", sub[1]+6);
- *yield = !testfor;
+ tempcond = FALSE;
}
}
sub[1] += 9;
which = 2;
}
- else if (sub[1][0] == '{')
+ else if (sub[1][0] == '{') /* }-for-text-editors */
{
expand_string_message = string_sprintf("unknown encryption mechanism "
"in \"%s\"", sub[1]);
#define XSTR(s) STR(s)
DEBUG(D_auth) debug_printf("crypteq: using %s()\n"
" subject=%s\n crypted=%s\n",
- (which == 0)? XSTR(DEFAULT_CRYPT) : (which == 1)? "crypt" : "crypt16",
+ which == 0 ? XSTR(DEFAULT_CRYPT) : which == 1 ? "crypt" : "crypt16",
coded, sub[1]);
#undef STR
#undef XSTR
salt), force failure. Otherwise we get false positives: with an empty
string the yield of crypt() is an empty string! */
- *yield = (Ustrlen(sub[1]) < 2)? !testfor :
- (Ustrcmp(coded, sub[1]) == 0) == testfor;
+ if (coded)
+ tempcond = Ustrlen(sub[1]) < 2 ? FALSE : Ustrcmp(coded, sub[1]) == 0;
+ else if (errno == EINVAL)
+ tempcond = FALSE;
+ else
+ {
+ expand_string_message = string_sprintf("crypt error: %s\n",
+ US strerror(errno));
+ return NULL;
+ }
}
break;
#endif /* SUPPORT_CRYPTEQ */
case ECOND_INLIST:
case ECOND_INLISTI:
{
+ const uschar * list = sub[1];
int sep = 0;
- BOOL found = FALSE;
uschar *save_iterate_item = iterate_item;
int (*compare)(const uschar *, const uschar *);
- if (cond_type == ECOND_INLISTI)
- compare = strcmpic;
- else
- compare = (int (*)(const uschar *, const uschar *)) strcmp;
+ DEBUG(D_expand) debug_printf("condition: %s\n", name);
- while ((iterate_item = string_nextinlist(&sub[1], &sep, NULL, 0)) != NULL)
+ tempcond = FALSE;
+ compare = cond_type == ECOND_INLISTI
+ ? strcmpic : (int (*)(const uschar *, const uschar *)) strcmp;
+
+ while ((iterate_item = string_nextinlist(&list, &sep, NULL, 0)))
if (compare(sub[0], iterate_item) == 0)
{
- found = TRUE;
+ tempcond = TRUE;
break;
}
iterate_item = save_iterate_item;
- *yield = found;
}
} /* Switch for comparison conditions */
+ *yield = tempcond == testfor;
return s; /* End of comparison conditions */
combined_cond = (cond_type == ECOND_AND);
while (isspace(*s)) s++;
- if (*s++ != '{') goto COND_FAILED_CURLY_START;
+ if (*s++ != '{') goto COND_FAILED_CURLY_START; /* }-for-text-editors */
for (;;)
{
while (isspace(*s)) s++;
+ /* {-for-text-editors */
if (*s == '}') break;
- if (*s != '{')
+ if (*s != '{') /* }-for-text-editors */
{
expand_string_message = string_sprintf("each subcondition "
"inside an \"%s{...}\" condition must be in its own {}", name);
return NULL;
}
- s = eval_condition(s+1, subcondptr);
- if (s == NULL)
+ if (!(s = eval_condition(s+1, resetok, subcondptr)))
{
expand_string_message = string_sprintf("%s inside \"%s{...}\" condition",
expand_string_message, name);
}
while (isspace(*s)) s++;
+ /* {-for-text-editors */
if (*s++ != '}')
{
+ /* {-for-text-editors */
expand_string_message = string_sprintf("missing } at end of condition "
"inside \"%s\" group", name);
return NULL;
case ECOND_FORALL:
case ECOND_FORANY:
{
+ const uschar * list;
int sep = 0;
uschar *save_iterate_item = iterate_item;
+ DEBUG(D_expand) debug_printf("condition: %s\n", name);
+
while (isspace(*s)) s++;
- if (*s++ != '{') goto COND_FAILED_CURLY_START;
- sub[0] = expand_string_internal(s, TRUE, &s, (yield == NULL), TRUE);
+ if (*s++ != '{') goto COND_FAILED_CURLY_START; /* }-for-text-editors */
+ sub[0] = expand_string_internal(s, TRUE, &s, (yield == NULL), TRUE, resetok);
if (sub[0] == NULL) return NULL;
+ /* {-for-text-editors */
if (*s++ != '}') goto COND_FAILED_CURLY_END;
while (isspace(*s)) s++;
- if (*s++ != '{') goto COND_FAILED_CURLY_START;
+ if (*s++ != '{') goto COND_FAILED_CURLY_START; /* }-for-text-editors */
sub[1] = s;
"false" part). This allows us to find the end of the condition, because if
the list it empty, we won't actually evaluate the condition for real. */
- s = eval_condition(sub[1], NULL);
- if (s == NULL)
+ if (!(s = eval_condition(sub[1], resetok, NULL)))
{
expand_string_message = string_sprintf("%s inside \"%s\" condition",
expand_string_message, name);
}
while (isspace(*s)) s++;
+ /* {-for-text-editors */
if (*s++ != '}')
{
+ /* {-for-text-editors */
expand_string_message = string_sprintf("missing } at end of condition "
"inside \"%s\"", name);
return NULL;
}
if (yield != NULL) *yield = !testfor;
- while ((iterate_item = string_nextinlist(&sub[0], &sep, NULL, 0)) != NULL)
+ list = sub[0];
+ while ((iterate_item = string_nextinlist(&list, &sep, NULL, 0)) != NULL)
{
DEBUG(D_expand) debug_printf("%s: $item = \"%s\"\n", name, iterate_item);
- if (eval_condition(sub[1], &tempcond) == NULL)
+ if (!eval_condition(sub[1], resetok, &tempcond))
{
expand_string_message = string_sprintf("%s inside \"%s\" condition",
expand_string_message, name);
size_t len;
BOOL boolvalue = FALSE;
while (isspace(*s)) s++;
- if (*s != '{') goto COND_FAILED_CURLY_START;
+ if (*s != '{') goto COND_FAILED_CURLY_START; /* }-for-text-editors */
ourname = cond_type == ECOND_BOOL_LAX ? US"bool_lax" : US"bool";
- switch(read_subs(sub_arg, 1, 1, &s, yield == NULL, FALSE, ourname))
+ switch(read_subs(sub_arg, 1, 1, &s, yield == NULL, FALSE, ourname, resetok))
{
case 1: expand_string_message = string_sprintf(
"too few arguments or bracketing error for %s",
be no maintenance burden from replicating it. */
if (len == 0)
boolvalue = FALSE;
- else if (Ustrspn(t, "0123456789") == len)
+ else if (*t == '-'
+ ? Ustrspn(t+1, "0123456789") == len-1
+ : Ustrspn(t, "0123456789") == len)
{
boolvalue = (Uatoi(t) == 0) ? FALSE : TRUE;
/* expand_check_condition only does a literal string "0" check */
"value \"%s\"", t);
return NULL;
}
+ DEBUG(D_expand) debug_printf("%s: condition evaluated to %s\n", ourname,
+ boolvalue? "true":"false");
if (yield != NULL) *yield = (boolvalue == testfor);
return s;
}
yieldptr points to the output string pointer
sizeptr points to the output string size
ptrptr points to the output string pointer
- type "lookup" or "if" or "extract" or "run", for error message
+ type "lookup", "if", "extract", "run", "env", "listextract" or
+ "certextract" for error message
+ resetok if not NULL, pointer to flag - write FALSE if unsafe to reset
+ the store.
Returns: 0 OK; lookup_value has been reset to save_lookup
1 expansion failed
*/
static int
-process_yesno(BOOL skipping, BOOL yes, uschar *save_lookup, uschar **sptr,
- uschar **yieldptr, int *sizeptr, int *ptrptr, uschar *type)
+process_yesno(BOOL skipping, BOOL yes, uschar *save_lookup, const uschar **sptr,
+ uschar **yieldptr, int *sizeptr, int *ptrptr, uschar *type, BOOL *resetok)
{
int rc = 0;
-uschar *s = *sptr; /* Local value */
+const uschar *s = *sptr; /* Local value */
uschar *sub1, *sub2;
+const uschar * errwhere;
/* If there are no following strings, we substitute the contents of $value for
lookups and for extractions in the success case. For the ${if item, the string
while (isspace(*s)) s++;
if (*s == '}')
{
- if (type[0] == 'i')
- {
- if (yes) *yieldptr = string_cat(*yieldptr, sizeptr, ptrptr, US"true", 4);
- }
- else
- {
- if (yes && lookup_value != NULL)
- *yieldptr = string_cat(*yieldptr, sizeptr, ptrptr, lookup_value,
- Ustrlen(lookup_value));
- lookup_value = save_lookup;
- }
- s++;
- goto RETURN;
+ if (!skipping)
+ if (type[0] == 'i')
+ {
+ if (yes) *yieldptr = string_catn(*yieldptr, sizeptr, ptrptr, US"true", 4);
+ }
+ else
+ {
+ if (yes && lookup_value)
+ *yieldptr = string_cat(*yieldptr, sizeptr, ptrptr, lookup_value);
+ lookup_value = save_lookup;
+ }
+ s++;
+ goto RETURN;
}
/* The first following string must be braced. */
-if (*s++ != '{') goto FAILED_CURLY;
+if (*s++ != '{')
+ {
+ errwhere = US"'yes' part did not start with '{'";
+ goto FAILED_CURLY;
+ }
/* Expand the first substring. Forced failures are noticed only if we actually
want this string. Set skipping in the call in the fail case (this will always
be the case if we were already skipping). */
-sub1 = expand_string_internal(s, TRUE, &s, !yes, TRUE);
+sub1 = expand_string_internal(s, TRUE, &s, !yes, TRUE, resetok);
if (sub1 == NULL && (yes || !expand_string_forcedfail)) goto FAILED;
expand_string_forcedfail = FALSE;
-if (*s++ != '}') goto FAILED_CURLY;
+if (*s++ != '}')
+ {
+ errwhere = US"'yes' part did not end with '}'";
+ goto FAILED_CURLY;
+ }
/* If we want the first string, add it to the output */
if (yes)
- *yieldptr = string_cat(*yieldptr, sizeptr, ptrptr, sub1, Ustrlen(sub1));
+ *yieldptr = string_cat(*yieldptr, sizeptr, ptrptr, sub1);
-/* If this is called from a lookup or an extract, we want to restore $value to
-what it was at the start of the item, so that it has this value during the
-second string expansion. For the call from "if" or "run" to this function,
-save_lookup is set to lookup_value, so that this statement does nothing. */
+/* If this is called from a lookup/env or a (cert)extract, we want to restore
+$value to what it was at the start of the item, so that it has this value
+during the second string expansion. For the call from "if" or "run" to this
+function, save_lookup is set to lookup_value, so that this statement does
+nothing. */
lookup_value = save_lookup;
while (isspace(*s)) s++;
if (*s == '{')
{
- sub2 = expand_string_internal(s+1, TRUE, &s, yes || skipping, TRUE);
+ sub2 = expand_string_internal(s+1, TRUE, &s, yes || skipping, TRUE, resetok);
if (sub2 == NULL && (!yes || !expand_string_forcedfail)) goto FAILED;
expand_string_forcedfail = FALSE;
- if (*s++ != '}') goto FAILED_CURLY;
+ if (*s++ != '}')
+ {
+ errwhere = US"'no' part did not start with '{'";
+ goto FAILED_CURLY;
+ }
/* If we want the second string, add it to the output */
if (!yes)
- *yieldptr = string_cat(*yieldptr, sizeptr, ptrptr, sub2, Ustrlen(sub2));
+ *yieldptr = string_cat(*yieldptr, sizeptr, ptrptr, sub2);
}
/* If there is no second string, but the word "fail" is present when the use of
else if (*s != '}')
{
uschar name[256];
- s = read_name(name, sizeof(name), s, US"_");
+ /* deconst cast ok here as source is s anyway */
+ s = US read_name(name, sizeof(name), s, US"_");
if (Ustrcmp(name, "fail") == 0)
{
if (!yes && !skipping)
{
while (isspace(*s)) s++;
- if (*s++ != '}') goto FAILED_CURLY;
+ if (*s++ != '}')
+ {
+ errwhere = US"did not close with '}' after forcedfail";
+ goto FAILED_CURLY;
+ }
expand_string_message =
string_sprintf("\"%s\" failed and \"fail\" requested", type);
expand_string_forcedfail = TRUE;
/* All we have to do now is to check on the final closing brace. */
while (isspace(*s)) s++;
-if (*s++ == '}') goto RETURN;
-
-/* Get here if there is a bracketing failure */
-
-FAILED_CURLY:
-rc++;
-
-/* Get here for other failures */
-
-FAILED:
-rc++;
+if (*s++ != '}')
+ {
+ errwhere = US"did not close with '}'";
+ goto FAILED_CURLY;
+ }
-/* Update the input pointer value before returning */
RETURN:
+/* Update the input pointer value before returning */
*sptr = s;
return rc;
+
+FAILED_CURLY:
+ /* Get here if there is a bracketing failure */
+ expand_string_message = string_sprintf(
+ "curly-bracket problem in conditional yes/no parsing: %s\n"
+ " remaining string is '%s'", errwhere, --s);
+ rc = 2;
+ goto RETURN;
+
+FAILED:
+ /* Get here for other failures */
+ rc = 1;
+ goto RETURN;
}
if (type == HMAC_MD5)
md5_start((md5 *)base);
else
- sha1_start((sha1 *)base);
+ sha1_start((hctx *)base);
}
static void
if (type == HMAC_MD5)
md5_mid((md5 *)base, string);
else
- sha1_mid((sha1 *)base, string);
+ sha1_mid((hctx *)base, string);
}
static void
if (type == HMAC_MD5)
md5_end((md5 *)base, string, length, digest);
else
- sha1_end((sha1 *)base, string, length, digest);
+ sha1_end((hctx *)base, string, length, digest);
}
{
uschar *hash_source, *p;
int size = 0,offset = 0,i;
-sha1 sha1_base;
-void *use_base = &sha1_base;
+hctx h;
uschar innerhash[20];
uschar finalhash[20];
uschar innerkey[64];
if (Ustrlen(key) > 64)
return NULL;
-hash_source = string_cat(NULL,&size,&offset,key_num,1);
-string_cat(hash_source,&size,&offset,daystamp,3);
-string_cat(hash_source,&size,&offset,address,Ustrlen(address));
+hash_source = string_catn(NULL, &size, &offset, key_num, 1);
+hash_source = string_catn(hash_source, &size, &offset, daystamp, 3);
+hash_source = string_cat(hash_source, &size, &offset, address);
hash_source[offset] = '\0';
DEBUG(D_expand) debug_printf("prvs: hash source is '%s'\n", hash_source);
outerkey[i] ^= key[i];
}
-chash_start(HMAC_SHA1, use_base);
-chash_mid(HMAC_SHA1, use_base, innerkey);
-chash_end(HMAC_SHA1, use_base, hash_source, offset, innerhash);
+chash_start(HMAC_SHA1, &h);
+chash_mid(HMAC_SHA1, &h, innerkey);
+chash_end(HMAC_SHA1, &h, hash_source, offset, innerhash);
-chash_start(HMAC_SHA1, use_base);
-chash_mid(HMAC_SHA1, use_base, outerkey);
-chash_end(HMAC_SHA1, use_base, innerhash, 20, finalhash);
+chash_start(HMAC_SHA1, &h);
+chash_mid(HMAC_SHA1, &h, outerkey);
+chash_end(HMAC_SHA1, &h, innerhash, 20, finalhash);
p = finalhash_hex;
for (i = 0; i < 3; i++)
* Join a file onto the output string *
*************************************************/
-/* This is used for readfile and after a run expansion. It joins the contents
-of a file onto the output string, globally replacing newlines with a given
-string (optionally). The file is closed at the end.
+/* This is used for readfile/readsock and after a run expansion.
+It joins the contents of a file onto the output string, globally replacing
+newlines with a given string (optionally).
Arguments:
f the FILE
static uschar *
cat_file(FILE *f, uschar *yield, int *sizep, int *ptrp, uschar *eol)
{
-int eollen;
uschar buffer[1024];
-eollen = (eol == NULL)? 0 : Ustrlen(eol);
-
-while (Ufgets(buffer, sizeof(buffer), f) != NULL)
+while (Ufgets(buffer, sizeof(buffer), f))
{
int len = Ustrlen(buffer);
- if (eol != NULL && buffer[len-1] == '\n') len--;
- yield = string_cat(yield, sizep, ptrp, buffer, len);
- if (buffer[len] != 0)
- yield = string_cat(yield, sizep, ptrp, eol, eollen);
+ if (eol && buffer[len-1] == '\n') len--;
+ yield = string_catn(yield, sizep, ptrp, buffer, len);
+ if (eol && buffer[len])
+ yield = string_cat(yield, sizep, ptrp, eol);
}
-if (yield != NULL) yield[*ptrp] = 0;
+if (yield) yield[*ptrp] = 0;
return yield;
}
* can just let the other invalid results occur otherwise, as they have
* until now. For this one case, we can coerce.
*/
- if (y == -1 && x == LLONG_MIN && op != '*')
+ if (y == -1 && x == EXIM_ARITH_MIN && op != '*')
{
DEBUG(D_expand)
debug_printf("Integer exception dodging: " PR_EXIM_ARITH "%c-1 coerced to " PR_EXIM_ARITH "\n",
- LLONG_MIN, op, LLONG_MAX);
- x = LLONG_MAX;
+ EXIM_ARITH_MIN, op, EXIM_ARITH_MAX);
+ x = EXIM_ARITH_MAX;
continue;
}
if (op == '*')
{
uschar *s = *sptr;
int_eximarith_t x = eval_op_mult(&s, decimal, error);
-if (*error == NULL)
+if (!*error)
{
while (*s == '+' || *s == '-')
{
int op = *s++;
int_eximarith_t y = eval_op_mult(&s, decimal, error);
- if (*error != NULL) break;
+ if (*error) break;
+ if ( (x >= EXIM_ARITH_MAX/2 && x >= EXIM_ARITH_MAX/2)
+ || (x <= -(EXIM_ARITH_MAX/2) && y <= -(EXIM_ARITH_MAX/2)))
+ { /* over-conservative check */
+ *error = op == '+'
+ ? US"overflow in sum" : US"overflow in difference";
+ break;
+ }
if (op == '+') x += y; else x -= y;
}
}
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.
+we skip any resets if ${dlfunc } has been used. The same applies for ${acl }
+and, given the acl condition, ${if }. This is an unfortunate consequence of
+string expansion becoming too powerful.
Arguments:
string the string to be expanded
to be used (to allow for optimisation)
honour_dollar TRUE if $ is to be expanded,
FALSE if it's just another character
+ resetok_p if not NULL, pointer to flag - write FALSE if unsafe to reset
+ the store.
Returns: NULL if expansion fails:
expand_string_forcedfail is set TRUE if failure was forced
*/
static uschar *
-expand_string_internal(uschar *string, BOOL ket_ends, uschar **left,
- BOOL skipping, BOOL honour_dollar)
+expand_string_internal(const uschar *string, BOOL ket_ends, const uschar **left,
+ BOOL skipping, BOOL honour_dollar, BOOL *resetok_p)
{
int ptr = 0;
int size = Ustrlen(string)+ 64;
-int item_type;
uschar *yield = store_get(size);
-uschar *s = string;
+int item_type;
+const uschar *s = string;
uschar *save_expand_nstring[EXPAND_MAXN+1];
int save_expand_nlength[EXPAND_MAXN+1];
BOOL resetok = TRUE;
+DEBUG(D_expand)
+ debug_printf("%s: %s\n", skipping ? " scanning" : "considering", string);
+
expand_string_forcedfail = FALSE;
expand_string_message = US"";
if (s[1] == 'N')
{
- uschar *t = s + 2;
+ const uschar * t = s + 2;
for (s = t; *s != 0; s++) if (*s == '\\' && s[1] == 'N') break;
- yield = string_cat(yield, &size, &ptr, t, s - t);
+ yield = string_catn(yield, &size, &ptr, t, s - t);
if (*s != 0) s += 2;
}
uschar ch[1];
ch[0] = string_interpret_escape(&s);
s++;
- yield = string_cat(yield, &size, &ptr, ch, 1);
+ yield = string_catn(yield, &size, &ptr, ch, 1);
}
continue;
}
+ /*{*/
/* Anything other than $ is just copied verbatim, unless we are
looking for a terminating } character. */
+ /*{*/
if (ket_ends && *s == '}') break;
if (*s != '$' || !honour_dollar)
{
- yield = string_cat(yield, &size, &ptr, s++, 1);
+ yield = string_catn(yield, &size, &ptr, s++, 1);
continue;
}
names can contain any printing characters except space and colon.
For those that don't like typing this much, "$h_" is a synonym for
"$header_". A non-existent header yields a NULL value; nothing is
- inserted. */
+ inserted. */ /*}*/
if (isalpha((*(++s))))
{
/* Variable */
- else
+ else if (!(value = find_variable(name, FALSE, skipping, &newsize)))
{
- value = find_variable(name, FALSE, skipping, &newsize);
- if (value == NULL)
- {
- expand_string_message =
- string_sprintf("unknown variable name \"%s\"", name);
- check_variable_error_message(name);
- goto EXPAND_FAILED;
- }
+ expand_string_message =
+ string_sprintf("unknown variable name \"%s\"", name);
+ check_variable_error_message(name);
+ goto EXPAND_FAILED;
}
/* If the data is known to be in a new buffer, newsize will be set to the
size = newsize;
ptr = len;
}
- else yield = string_cat(yield, &size, &ptr, value, len);
+ else yield = string_catn(yield, &size, &ptr, value, len);
continue;
}
if (isdigit(*s))
{
int n;
- s = read_number(&n, s);
+ s = read_cnumber(&n, s);
if (n >= 0 && n <= expand_nmax)
- yield = string_cat(yield, &size, &ptr, expand_nstring[n],
+ yield = string_catn(yield, &size, &ptr, expand_nstring[n],
expand_nlength[n]);
continue;
}
- /* Otherwise, if there's no '{' after $ it's an error. */
+ /* Otherwise, if there's no '{' after $ it's an error. */ /*}*/
- if (*s != '{')
+ if (*s != '{') /*}*/
{
- expand_string_message = US"$ not followed by letter, digit, or {";
+ expand_string_message = US"$ not followed by letter, digit, or {"; /*}*/
goto EXPAND_FAILED;
}
if (isdigit((*(++s))))
{
int n;
- s = read_number(&n, s);
+ s = read_cnumber(&n, s); /*{*/
if (*s++ != '}')
- {
+ { /*{*/
expand_string_message = US"} expected after number";
goto EXPAND_FAILED;
}
if (n >= 0 && n <= expand_nmax)
- yield = string_cat(yield, &size, &ptr, expand_nstring[n],
+ yield = string_catn(yield, &size, &ptr, expand_nstring[n],
expand_nlength[n]);
continue;
}
if (!isalpha(*s))
{
- expand_string_message = US"letter or digit expected after ${";
+ expand_string_message = US"letter or digit expected after ${"; /*}*/
goto EXPAND_FAILED;
}
OK. */
s = read_name(name, sizeof(name), s, US"_-");
- item_type = chop_match(name, item_table, sizeof(item_table)/sizeof(uschar *));
+ item_type = chop_match(name, item_table, nelem(item_table));
switch(item_type)
{
+ /* Call an ACL from an expansion. We feed data in via $acl_arg1 - $acl_arg9.
+ If the ACL returns accept or reject we return content set by "message ="
+ There is currently no limit on recursion; this would have us call
+ acl_check_internal() directly and get a current level from somewhere.
+ See also the acl expansion condition ECOND_ACL and the traditional
+ acl modifier ACLC_ACL.
+ Assume that the function has side-effects on the store that must be preserved.
+ */
+
+ case EITEM_ACL:
+ /* ${acl {name} {arg1}{arg2}...} */
+ {
+ uschar *sub[10]; /* name + arg1-arg9 (which must match number of acl_arg[]) */
+ uschar *user_msg;
+
+ switch(read_subs(sub, nelem(sub), 1, &s, skipping, TRUE, US"acl",
+ &resetok))
+ {
+ case 1: goto EXPAND_FAILED_CURLY;
+ case 2:
+ case 3: goto EXPAND_FAILED;
+ }
+ if (skipping) continue;
+
+ resetok = FALSE;
+ switch(eval_acl(sub, nelem(sub), &user_msg))
+ {
+ case OK:
+ case FAIL:
+ DEBUG(D_expand)
+ debug_printf("acl expansion yield: %s\n", user_msg);
+ if (user_msg)
+ yield = string_cat(yield, &size, &ptr, user_msg);
+ continue;
+
+ case DEFER:
+ expand_string_forcedfail = TRUE;
+ /*FALLTHROUGH*/
+ default:
+ expand_string_message = string_sprintf("error from acl \"%s\"", sub[0]);
+ goto EXPAND_FAILED;
+ }
+ }
+
/* Handle conditionals - preserve the values of the numerical expansion
variables in case they get changed by a regular expression match in the
condition. If not, they retain their external settings. At the end
case EITEM_IF:
{
BOOL cond = FALSE;
- uschar *next_s;
+ const uschar *next_s;
int save_expand_nmax =
save_expand_strings(save_expand_nstring, save_expand_nlength);
while (isspace(*s)) s++;
- next_s = eval_condition(s, skipping? NULL : &cond);
+ next_s = eval_condition(s, &resetok, skipping? NULL : &cond);
if (next_s == NULL) goto EXPAND_FAILED; /* message already set */
DEBUG(D_expand)
- debug_printf("condition: %.*s\n result: %s\n", (int)(next_s - s), s,
- cond? "true" : "false");
+ debug_printf(" condition: %.*s\n result: %s\n",
+ (int)(next_s - s), s,
+ cond ? "true" : "false");
s = next_s;
&yield, /* output pointer */
&size, /* output size */
&ptr, /* output current point */
- US"if")) /* condition type */
+ US"if", /* condition type */
+ &resetok))
{
case 1: goto EXPAND_FAILED; /* when all is well, the */
case 2: goto EXPAND_FAILED_CURLY; /* returned value is 0 */
continue;
}
+#ifdef SUPPORT_I18N
+ case EITEM_IMAPFOLDER:
+ { /* ${imapfolder {name}{sep]{specials}} */
+ uschar *sub_arg[3];
+ uschar *encoded;
+
+ switch(read_subs(sub_arg, nelem(sub_arg), 1, &s, skipping, TRUE, name,
+ &resetok))
+ {
+ case 1: goto EXPAND_FAILED_CURLY;
+ case 2:
+ case 3: goto EXPAND_FAILED;
+ }
+
+ if (sub_arg[1] == NULL) /* One argument */
+ {
+ sub_arg[1] = US"/"; /* default separator */
+ sub_arg[2] = NULL;
+ }
+ else if (Ustrlen(sub_arg[1]) != 1)
+ {
+ expand_string_message =
+ string_sprintf(
+ "IMAP folder separator must be one character, found \"%s\"",
+ sub_arg[1]);
+ goto EXPAND_FAILED;
+ }
+
+ if (!(encoded = imap_utf7_encode(sub_arg[0], headers_charset,
+ sub_arg[1][0], sub_arg[2], &expand_string_message)))
+ goto EXPAND_FAILED;
+ if (!skipping)
+ yield = string_cat(yield, &size, &ptr, encoded);
+ continue;
+ }
+#endif
+
/* Handle database lookups unless locked out. If "skipping" is TRUE, we are
expanding an internal string that isn't actually going to be used. All we
need to do is check the syntax, so don't do a lookup at all. Preserve the
int stype, partial, affixlen, starflags;
int expand_setup = 0;
int nameptr = 0;
- uschar *key, *filename, *affix;
+ uschar *key, *filename;
+ const uschar *affix;
uschar *save_lookup_value = lookup_value;
int save_expand_nmax =
save_expand_strings(save_expand_nstring, save_expand_nlength);
Otherwise set the key NULL pro-tem. */
while (isspace(*s)) s++;
- if (*s == '{')
+ if (*s == '{') /*}*/
{
- key = expand_string_internal(s+1, TRUE, &s, skipping, TRUE);
- if (key == NULL) goto EXPAND_FAILED;
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
+ key = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok);
+ if (!key) goto EXPAND_FAILED; /*{{*/
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' after lookup key";
+ goto EXPAND_FAILED_CURLY;
+ }
while (isspace(*s)) s++;
}
else key = NULL;
/* The type is a string that may contain special characters of various
kinds. Allow everything except space or { to appear; the actual content
- is checked by search_findtype_partial. */
+ is checked by search_findtype_partial. */ /*}*/
- while (*s != 0 && *s != '{' && !isspace(*s))
+ while (*s != 0 && *s != '{' && !isspace(*s)) /*}*/
{
if (nameptr < sizeof(name) - 1) name[nameptr++] = *s;
s++;
queries that also require a file name (e.g. sqlite), the file name comes
first. */
- if (*s != '{') goto EXPAND_FAILED_CURLY;
- filename = expand_string_internal(s+1, TRUE, &s, skipping, TRUE);
+ if (*s != '{')
+ {
+ expand_string_message = US"missing '{' for lookup file-or-query arg";
+ goto EXPAND_FAILED_CURLY;
+ }
+ filename = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok);
if (filename == NULL) goto EXPAND_FAILED;
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' closing lookup file-or-query arg";
+ goto EXPAND_FAILED_CURLY;
+ }
while (isspace(*s)) s++;
/* If this isn't a single-key+file lookup, re-arrange the variables
there is just a "key", and no file name. For the special query-style +
file types, the query (i.e. "key") starts with a file name. */
- if (key == NULL)
+ if (!key)
{
while (isspace(*filename)) filename++;
key = filename;
if (mac_islookup(stype, lookup_querystyle))
- {
filename = NULL;
- }
else
{
if (*filename != '/')
&yield, /* output pointer */
&size, /* output size */
&ptr, /* output current point */
- US"lookup")) /* condition type */
+ US"lookup", /* condition type */
+ &resetok))
{
case 1: goto EXPAND_FAILED; /* when all is well, the */
case 2: goto EXPAND_FAILED_CURLY; /* returned value is 0 */
case EITEM_PERL:
#ifndef EXIM_PERL
- expand_string_message = US"\"${perl\" encountered, but this facility "
+ expand_string_message = US"\"${perl\" encountered, but this facility " /*}*/
"is not included in this binary";
goto EXPAND_FAILED;
}
switch(read_subs(sub_arg, EXIM_PERL_MAX_ARGS + 1, 1, &s, skipping, TRUE,
- US"perl"))
+ US"perl", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
uschar *sub_arg[3];
uschar *p,*domain;
- switch(read_subs(sub_arg, 3, 2, &s, skipping, TRUE, US"prvs"))
+ switch(read_subs(sub_arg, 3, 2, &s, skipping, TRUE, US"prvs", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
/* Now separate the domain from the local part */
*domain++ = '\0';
- yield = string_cat(yield,&size,&ptr,US"prvs=",5);
- 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));
+ yield = string_catn(yield, &size, &ptr, US"prvs=", 5);
+ yield = string_catn(yield, &size, &ptr, sub_arg[2] ? sub_arg[2] : US"0", 1);
+ yield = string_catn(yield, &size, &ptr, prvs_daystamp(7), 3);
+ yield = string_catn(yield, &size, &ptr, p, 6);
+ yield = string_catn(yield, &size, &ptr, US"=", 1);
+ yield = string_cat (yield, &size, &ptr, sub_arg[0]);
+ yield = string_catn(yield, &size, &ptr, US"@", 1);
+ yield = string_cat (yield, &size, &ptr, domain);
continue;
}
prvscheck_address = NULL;
prvscheck_keynum = NULL;
- switch(read_subs(sub_arg, 1, 1, &s, skipping, FALSE, US"prvs"))
+ switch(read_subs(sub_arg, 1, 1, &s, skipping, FALSE, US"prvs", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
DEBUG(D_expand) debug_printf("prvscheck domain: %s\n", domain);
/* Set up expansion variables */
- prvscheck_address = string_cat(NULL, &mysize, &myptr, local_part, Ustrlen(local_part));
- string_cat(prvscheck_address,&mysize,&myptr,US"@",1);
- string_cat(prvscheck_address,&mysize,&myptr,domain,Ustrlen(domain));
+ prvscheck_address = string_cat (NULL, &mysize, &myptr, local_part);
+ prvscheck_address = string_catn(prvscheck_address, &mysize, &myptr, US"@", 1);
+ prvscheck_address = string_cat (prvscheck_address, &mysize, &myptr, domain);
prvscheck_address[myptr] = '\0';
prvscheck_keynum = string_copy(key_num);
/* Now expand the second argument */
- switch(read_subs(sub_arg, 1, 1, &s, skipping, FALSE, US"prvs"))
+ switch(read_subs(sub_arg, 1, 1, &s, skipping, FALSE, US"prvs", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
/* Now expand the final argument. We leave this till now so that
it can include $prvscheck_result. */
- switch(read_subs(sub_arg, 1, 0, &s, skipping, TRUE, US"prvs"))
+ switch(read_subs(sub_arg, 1, 0, &s, skipping, TRUE, US"prvs", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
case 3: goto EXPAND_FAILED;
}
- if (sub_arg[0] == NULL || *sub_arg[0] == '\0')
- yield = string_cat(yield,&size,&ptr,prvscheck_address,Ustrlen(prvscheck_address));
- else
- yield = string_cat(yield,&size,&ptr,sub_arg[0],Ustrlen(sub_arg[0]));
+ yield = string_cat(yield, &size, &ptr,
+ !sub_arg[0] || !*sub_arg[0] ? prvscheck_address : sub_arg[0]);
/* Reset the "internal" variables afterwards, because they are in
dynamic store that will be reclaimed if the expansion succeeded. */
We need to make sure all subs are expanded first, so as to skip over
the entire item. */
- switch(read_subs(sub_arg, 2, 1, &s, skipping, TRUE, US"prvs"))
+ switch(read_subs(sub_arg, 2, 1, &s, skipping, TRUE, US"prvs", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
goto EXPAND_FAILED;
}
- switch(read_subs(sub_arg, 2, 1, &s, skipping, TRUE, US"readfile"))
+ switch(read_subs(sub_arg, 2, 1, &s, skipping, TRUE, US"readfile", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
/* Read up to 4 arguments, but don't do the end of item check afterwards,
because there may be a string for expansion on failure. */
- switch(read_subs(sub_arg, 4, 2, &s, skipping, FALSE, US"readsocket"))
+ switch(read_subs(sub_arg, 4, 2, &s, skipping, FALSE, US"readsocket", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2: /* Won't occur: no end check */
if (Ustrncmp(sub_arg[0], "inet:", 5) == 0)
{
- BOOL connected = FALSE;
- int namelen, port;
- host_item shost;
- host_item *h;
+ int port;
uschar *server_name = sub_arg[0] + 5;
uschar *port_name = Ustrrchr(server_name, ':');
port = ntohs(service_info->s_port);
}
- /* Sort out the server. */
-
- shost.next = NULL;
- shost.address = NULL;
- shost.port = port;
- shost.mx = -1;
-
- namelen = Ustrlen(server_name);
-
- /* Anything enclosed in [] must be an IP address. */
-
- if (server_name[0] == '[' &&
- server_name[namelen - 1] == ']')
- {
- server_name[namelen - 1] = 0;
- server_name++;
- if (string_is_ip_address(server_name, NULL) == 0)
- {
- expand_string_message =
- string_sprintf("malformed IP address \"%s\"", server_name);
- goto EXPAND_FAILED;
- }
- shost.name = shost.address = server_name;
- }
-
- /* Otherwise check for an unadorned IP address */
-
- else if (string_is_ip_address(server_name, NULL) != 0)
- shost.name = shost.address = server_name;
-
- /* Otherwise lookup IP address(es) from the name */
-
- else
- {
- shost.name = server_name;
- if (host_find_byname(&shost, NULL, HOST_FIND_QUALIFY_SINGLE, NULL,
- FALSE) != HOST_FOUND)
- {
- expand_string_message =
- string_sprintf("no IP address found for host %s", shost.name);
- goto EXPAND_FAILED;
- }
- }
-
- /* Try to connect to the server - test each IP till one works */
-
- for (h = &shost; h != NULL; h = h->next)
- {
- int af = (Ustrchr(h->address, ':') != 0)? AF_INET6 : AF_INET;
- if ((fd = ip_socket(SOCK_STREAM, af)) == -1)
- {
- expand_string_message = string_sprintf("failed to create socket: "
- "%s", strerror(errno));
+ if ((fd = ip_connectedsocket(SOCK_STREAM, server_name, port, port,
+ timeout, NULL, &expand_string_message)) < 0)
goto SOCK_FAIL;
- }
-
- if (ip_connect(fd, af, h->address, port, timeout) == 0)
- {
- connected = TRUE;
- break;
- }
- }
-
- if (!connected)
- {
- expand_string_message = string_sprintf("failed to connect to "
- "socket %s: couldn't connect to any host", sub_arg[0],
- strerror(errno));
- goto SOCK_FAIL;
- }
}
/* Handle a Unix domain socket */
DEBUG(D_expand) debug_printf("connected to socket %s\n", sub_arg[0]);
+ /* Allow sequencing of test actions */
+ if (running_in_test_harness) millisleep(100);
+
/* Write the request string, if not empty */
if (sub_arg[1][0] != 0)
shutdown(fd, SHUT_WR);
#endif
+ if (running_in_test_harness) millisleep(100);
+
/* Now we need to read from the socket, under a timeout. The function
that reads a file can be used. */
if (*s == '{')
{
- if (expand_string_internal(s+1, TRUE, &s, TRUE, TRUE) == NULL)
+ if (expand_string_internal(s+1, TRUE, &s, TRUE, TRUE, &resetok) == NULL)
goto EXPAND_FAILED;
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' closing failstring for readsocket";
+ goto EXPAND_FAILED_CURLY;
+ }
while (isspace(*s)) s++;
}
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
+
+ readsock_done:
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' closing readsocket";
+ goto EXPAND_FAILED_CURLY;
+ }
continue;
/* Come here on failure to create socket, connect socket, write to the
SOCK_FAIL:
if (*s != '{') goto EXPAND_FAILED;
DEBUG(D_any) debug_printf("%s\n", expand_string_message);
- arg = expand_string_internal(s+1, TRUE, &s, FALSE, TRUE);
- if (arg == NULL) goto EXPAND_FAILED;
- yield = string_cat(yield, &size, &ptr, arg, Ustrlen(arg));
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
+ if (!(arg = expand_string_internal(s+1, TRUE, &s, FALSE, TRUE, &resetok)))
+ goto EXPAND_FAILED;
+ yield = string_cat(yield, &size, &ptr, arg);
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' closing failstring for readsocket";
+ goto EXPAND_FAILED_CURLY;
+ }
while (isspace(*s)) s++;
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
- continue;
+ goto readsock_done;
}
/* Handle "run" to execute a program. */
{
FILE *f;
uschar *arg;
- uschar **argv;
+ const uschar **argv;
pid_t pid;
int fd_in, fd_out;
- int lsize = 0;
- int lptr = 0;
+ int lsize = 0, lptr = 0;
if ((expand_forbid & RDO_RUN) != 0)
{
}
while (isspace(*s)) s++;
- if (*s != '{') goto EXPAND_FAILED_CURLY;
- arg = expand_string_internal(s+1, TRUE, &s, skipping, TRUE);
+ if (*s != '{')
+ {
+ expand_string_message = US"missing '{' for command arg of run";
+ goto EXPAND_FAILED_CURLY;
+ }
+ arg = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok);
if (arg == NULL) goto EXPAND_FAILED;
while (isspace(*s)) s++;
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' closing command arg of run";
+ goto EXPAND_FAILED_CURLY;
+ }
if (skipping) /* Just pretend it worked when we're skipping */
- {
+ {
runrc = 0;
- }
+ lookup_value = NULL;
+ }
else
{
if (!transport_set_up_command(&argv, /* anchor for arg list */
NULL, /* no transporting address */
US"${run} expansion", /* for error messages */
&expand_string_message)) /* where to put error message */
- {
goto EXPAND_FAILED;
- }
/* Create the child process, making it a group leader. */
- pid = child_open(argv, NULL, 0077, &fd_in, &fd_out, TRUE);
-
- if (pid < 0)
+ if ((pid = child_open(USS argv, NULL, 0077, &fd_in, &fd_out, TRUE)) < 0)
{
expand_string_message =
string_sprintf("couldn't create child process: %s", strerror(errno));
/* Read the pipe to get the command's output into $value (which is kept
in lookup_value). Read during execution, so that if the output exceeds
- the OS pipe buffer limit, we don't block forever. */
+ the OS pipe buffer limit, we don't block forever. Remember to not release
+ memory just allocated for $value. */
+ resetok = FALSE;
f = fdopen(fd_out, "rb");
sigalrm_seen = FALSE;
alarm(60);
- lookup_value = cat_file(f, lookup_value, &lsize, &lptr, NULL);
+ lookup_value = cat_file(f, NULL, &lsize, &lptr, NULL);
alarm(0);
(void)fclose(f);
return code for serious disasters. Simple non-zero returns are passed on.
*/
- if (sigalrm_seen == TRUE || (runrc = child_close(pid, 30)) < 0)
+ if (sigalrm_seen || (runrc = child_close(pid, 30)) < 0)
{
- if (sigalrm_seen == TRUE || runrc == -256)
+ if (sigalrm_seen || runrc == -256)
{
expand_string_message = string_sprintf("command timed out");
killpg(pid, SIGKILL); /* Kill the whole process group */
&yield, /* output pointer */
&size, /* output size */
&ptr, /* output current point */
- US"run")) /* condition type */
+ US"run", /* condition type */
+ &resetok))
{
case 1: goto EXPAND_FAILED; /* when all is well, the */
case 2: goto EXPAND_FAILED_CURLY; /* returned value is 0 */
int o2m;
uschar *sub[3];
- switch(read_subs(sub, 3, 3, &s, skipping, TRUE, US"tr"))
+ switch(read_subs(sub, 3, 3, &s, skipping, TRUE, US"tr", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
case 3: goto EXPAND_FAILED;
}
- yield = string_cat(yield, &size, &ptr, sub[0], Ustrlen(sub[0]));
+ yield = string_cat(yield, &size, &ptr, sub[0]);
o2m = Ustrlen(sub[2]) - 1;
if (o2m >= 0) for (; oldptr < ptr; oldptr++)
uschar *sub[3];
/* "length" takes only 2 arguments whereas the others take 2 or 3.
- Ensure that sub[2] is set in the ${length case. */
+ Ensure that sub[2] is set in the ${length } case. */
sub[2] = NULL;
switch(read_subs(sub, (item_type == EITEM_LENGTH)? 2:3, 2, &s, skipping,
- TRUE, name))
+ TRUE, name, &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
extract_substr(sub[2], val[0], val[1], &len);
if (ret == NULL) goto EXPAND_FAILED;
- yield = string_cat(yield, &size, &ptr, ret, len);
+ yield = string_catn(yield, &size, &ptr, ret, len);
continue;
}
{
uschar *sub[3];
md5 md5_base;
- sha1 sha1_base;
+ hctx sha1_ctx;
void *use_base;
int type, i;
int hashlen; /* Number of octets for the hash algorithm's output */
uschar innerkey[MAX_HASHBLOCKLEN];
uschar outerkey[MAX_HASHBLOCKLEN];
- switch (read_subs(sub, 3, 3, &s, skipping, TRUE, name))
+ switch (read_subs(sub, 3, 3, &s, skipping, TRUE, name, &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
case 3: goto EXPAND_FAILED;
}
- if (Ustrcmp(sub[0], "md5") == 0)
- {
- type = HMAC_MD5;
- use_base = &md5_base;
- hashlen = 16;
- hashblocklen = 64;
- }
- else if (Ustrcmp(sub[0], "sha1") == 0)
- {
- type = HMAC_SHA1;
- use_base = &sha1_base;
- hashlen = 20;
- hashblocklen = 64;
- }
- else
- {
- expand_string_message =
- string_sprintf("hmac algorithm \"%s\" is not recognised", sub[0]);
- goto EXPAND_FAILED;
- }
-
- keyptr = sub[1];
- keylen = Ustrlen(keyptr);
-
- /* If the key is longer than the hash block length, then hash the key
- first */
-
- if (keylen > hashblocklen)
- {
- chash_start(type, use_base);
- chash_end(type, use_base, keyptr, keylen, keyhash);
- keyptr = keyhash;
- keylen = hashlen;
- }
-
- /* Now make the inner and outer key values */
-
- memset(innerkey, 0x36, hashblocklen);
- memset(outerkey, 0x5c, hashblocklen);
-
- for (i = 0; i < keylen; i++)
- {
- innerkey[i] ^= keyptr[i];
- outerkey[i] ^= keyptr[i];
- }
-
- /* Now do the hashes */
-
- chash_start(type, use_base);
- chash_mid(type, use_base, innerkey);
- chash_end(type, use_base, sub[2], Ustrlen(sub[2]), innerhash);
-
- chash_start(type, use_base);
- chash_mid(type, use_base, outerkey);
- chash_end(type, use_base, innerhash, hashlen, finalhash);
-
- /* Encode the final hash as a hex string */
-
- p = finalhash_hex;
- for (i = 0; i < hashlen; i++)
- {
- *p++ = hex_digits[(finalhash[i] & 0xf0) >> 4];
- *p++ = hex_digits[finalhash[i] & 0x0f];
- }
-
- DEBUG(D_any) debug_printf("HMAC[%s](%.*s,%.*s)=%.*s\n", sub[0],
- (int)keylen, keyptr, Ustrlen(sub[2]), sub[2], hashlen*2, finalhash_hex);
-
- yield = string_cat(yield, &size, &ptr, finalhash_hex, hashlen*2);
+ if (!skipping)
+ {
+ if (Ustrcmp(sub[0], "md5") == 0)
+ {
+ type = HMAC_MD5;
+ use_base = &md5_base;
+ hashlen = 16;
+ hashblocklen = 64;
+ }
+ else if (Ustrcmp(sub[0], "sha1") == 0)
+ {
+ type = HMAC_SHA1;
+ use_base = &sha1_ctx;
+ hashlen = 20;
+ hashblocklen = 64;
+ }
+ else
+ {
+ expand_string_message =
+ string_sprintf("hmac algorithm \"%s\" is not recognised", sub[0]);
+ goto EXPAND_FAILED;
+ }
+
+ keyptr = sub[1];
+ keylen = Ustrlen(keyptr);
+
+ /* If the key is longer than the hash block length, then hash the key
+ first */
+
+ if (keylen > hashblocklen)
+ {
+ chash_start(type, use_base);
+ chash_end(type, use_base, keyptr, keylen, keyhash);
+ keyptr = keyhash;
+ keylen = hashlen;
+ }
+
+ /* Now make the inner and outer key values */
+
+ memset(innerkey, 0x36, hashblocklen);
+ memset(outerkey, 0x5c, hashblocklen);
+
+ for (i = 0; i < keylen; i++)
+ {
+ innerkey[i] ^= keyptr[i];
+ outerkey[i] ^= keyptr[i];
+ }
+
+ /* Now do the hashes */
+
+ chash_start(type, use_base);
+ chash_mid(type, use_base, innerkey);
+ chash_end(type, use_base, sub[2], Ustrlen(sub[2]), innerhash);
+
+ chash_start(type, use_base);
+ chash_mid(type, use_base, outerkey);
+ chash_end(type, use_base, innerhash, hashlen, finalhash);
+
+ /* Encode the final hash as a hex string */
+
+ p = finalhash_hex;
+ for (i = 0; i < hashlen; i++)
+ {
+ *p++ = hex_digits[(finalhash[i] & 0xf0) >> 4];
+ *p++ = hex_digits[finalhash[i] & 0x0f];
+ }
+
+ DEBUG(D_any) debug_printf("HMAC[%s](%.*s,%s)=%.*s\n",
+ sub[0], (int)keylen, keyptr, sub[2], hashlen*2, finalhash_hex);
+
+ yield = string_catn(yield, &size, &ptr, finalhash_hex, hashlen*2);
+ }
+ continue;
}
- continue;
-
/* Handle global substitution for "sg" - like Perl's s/xxx/yyy/g operator.
We have to save the numerical variables and restore them afterwards. */
int save_expand_nmax =
save_expand_strings(save_expand_nstring, save_expand_nlength);
- switch(read_subs(sub, 3, 3, &s, skipping, TRUE, US"sg"))
+ switch(read_subs(sub, 3, 3, &s, skipping, TRUE, US"sg", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
{
int ovector[3*(EXPAND_MAXN+1)];
int n = pcre_exec(re, NULL, CS subject, slen, moffset + moffsetextra,
- PCRE_EOPT | emptyopt, ovector, sizeof(ovector)/sizeof(int));
+ PCRE_EOPT | emptyopt, ovector, nelem(ovector));
int nn;
uschar *insert;
emptyopt = 0;
continue;
}
- yield = string_cat(yield, &size, &ptr, subject+moffset, slen-moffset);
+ yield = string_catn(yield, &size, &ptr, subject+moffset, slen-moffset);
break;
}
/* Copy the characters before the match, plus the expanded insertion. */
- yield = string_cat(yield, &size, &ptr, subject + moffset,
+ yield = string_catn(yield, &size, &ptr, subject + moffset,
ovector[0] - moffset);
insert = expand_string(sub[2]);
if (insert == NULL) goto EXPAND_FAILED;
- yield = string_cat(yield, &size, &ptr, insert, Ustrlen(insert));
+ yield = string_cat(yield, &size, &ptr, insert);
moffset = ovector[1];
moffsetextra = 0;
case EITEM_EXTRACT:
{
int i;
- int j = 2;
+ int j;
int field_number = 1;
BOOL field_number_set = FALSE;
uschar *save_lookup_value = lookup_value;
int save_expand_nmax =
save_expand_strings(save_expand_nstring, save_expand_nlength);
- /* Read the arguments */
+ /* While skipping we cannot rely on the data for expansions being
+ available (eg. $item) hence cannot decide on numeric vs. keyed.
+ Read a maximum of 5 arguments (inclding the yes/no) */
- for (i = 0; i < j; i++)
+ if (skipping)
+ {
+ while (isspace(*s)) s++;
+ for (j = 5; j > 0 && *s == '{'; j--)
+ {
+ if (!expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok))
+ goto EXPAND_FAILED; /*{*/
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '{' for arg of extract";
+ goto EXPAND_FAILED_CURLY;
+ }
+ while (isspace(*s)) s++;
+ }
+ if ( Ustrncmp(s, "fail", 4) == 0
+ && (s[4] == '}' || s[4] == ' ' || s[4] == '\t' || !s[4])
+ )
+ {
+ s += 4;
+ while (isspace(*s)) s++;
+ }
+ if (*s != '}')
+ {
+ expand_string_message = US"missing '}' closing extract";
+ goto EXPAND_FAILED_CURLY;
+ }
+ }
+
+ else for (i = 0, j = 2; i < j; i++) /* Read the proper number of arguments */
{
while (isspace(*s)) s++;
- if (*s == '{')
+ if (*s == '{') /*}*/
{
- sub[i] = expand_string_internal(s+1, TRUE, &s, skipping, TRUE);
- if (sub[i] == NULL) goto EXPAND_FAILED;
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
+ sub[i] = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok);
+ if (sub[i] == NULL) goto EXPAND_FAILED; /*{*/
+ if (*s++ != '}')
+ {
+ expand_string_message = string_sprintf(
+ "missing '}' closing arg %d of extract", i+1);
+ goto EXPAND_FAILED_CURLY;
+ }
/* After removal of leading and trailing white space, the first
argument must not be empty; if it consists entirely of digits
while (len > 0 && isspace(p[len-1])) len--;
p[len] = 0;
- if (*p == 0 && !skipping)
- {
- expand_string_message = US"first argument of \"extract\" must "
- "not be empty";
- goto EXPAND_FAILED;
- }
-
- if (*p == '-')
- {
- field_number = -1;
- p++;
- }
- while (*p != 0 && isdigit(*p)) x = x * 10 + *p++ - '0';
- if (*p == 0)
- {
- field_number *= x;
- j = 3; /* Need 3 args */
- field_number_set = TRUE;
- }
+ if (*p == 0)
+ {
+ expand_string_message = US"first argument of \"extract\" must "
+ "not be empty";
+ goto EXPAND_FAILED;
+ }
+
+ if (*p == '-')
+ {
+ field_number = -1;
+ p++;
+ }
+ while (*p != 0 && isdigit(*p)) x = x * 10 + *p++ - '0';
+ if (*p == 0)
+ {
+ field_number *= x;
+ j = 3; /* Need 3 args */
+ field_number_set = TRUE;
+ }
}
}
- else goto EXPAND_FAILED_CURLY;
+ else
+ {
+ expand_string_message = string_sprintf(
+ "missing '{' for arg %d of extract", i+1);
+ goto EXPAND_FAILED_CURLY;
+ }
}
/* Extract either the numbered or the keyed substring into $value. If
&yield, /* output pointer */
&size, /* output size */
&ptr, /* output current point */
- US"extract")) /* condition type */
+ US"extract", /* condition type */
+ &resetok))
{
case 1: goto EXPAND_FAILED; /* when all is well, the */
case 2: goto EXPAND_FAILED_CURLY; /* returned value is 0 */
continue;
}
+ /* return the Nth item from a list */
+
+ case EITEM_LISTEXTRACT:
+ {
+ int i;
+ int field_number = 1;
+ uschar *save_lookup_value = lookup_value;
+ uschar *sub[2];
+ int save_expand_nmax =
+ save_expand_strings(save_expand_nstring, save_expand_nlength);
+
+ /* Read the field & list arguments */
+
+ for (i = 0; i < 2; i++)
+ {
+ while (isspace(*s)) s++;
+ if (*s != '{') /*}*/
+ {
+ expand_string_message = string_sprintf(
+ "missing '{' for arg %d of listextract", i+1);
+ goto EXPAND_FAILED_CURLY;
+ }
+
+ sub[i] = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok);
+ if (!sub[i]) goto EXPAND_FAILED; /*{*/
+ if (*s++ != '}')
+ {
+ expand_string_message = string_sprintf(
+ "missing '}' closing arg %d of listextract", i+1);
+ goto EXPAND_FAILED_CURLY;
+ }
+
+ /* After removal of leading and trailing white space, the first
+ argument must be numeric and nonempty. */
+
+ if (i == 0)
+ {
+ int len;
+ int x = 0;
+ uschar *p = sub[0];
+
+ while (isspace(*p)) p++;
+ sub[0] = p;
+
+ len = Ustrlen(p);
+ while (len > 0 && isspace(p[len-1])) len--;
+ p[len] = 0;
+
+ if (!*p && !skipping)
+ {
+ expand_string_message = US"first argument of \"listextract\" must "
+ "not be empty";
+ goto EXPAND_FAILED;
+ }
+
+ if (*p == '-')
+ {
+ field_number = -1;
+ p++;
+ }
+ while (*p && isdigit(*p)) x = x * 10 + *p++ - '0';
+ if (*p)
+ {
+ expand_string_message = US"first argument of \"listextract\" must "
+ "be numeric";
+ goto EXPAND_FAILED;
+ }
+ field_number *= x;
+ }
+ }
+
+ /* Extract the numbered element into $value. If
+ skipping, just pretend the extraction failed. */
+
+ lookup_value = skipping? NULL : expand_getlistele(field_number, sub[1]);
+
+ /* If no string follows, $value gets substituted; otherwise there can
+ be yes/no strings, as for lookup or if. */
+
+ switch(process_yesno(
+ skipping, /* were previously skipping */
+ lookup_value != NULL, /* success/failure indicator */
+ save_lookup_value, /* value to reset for string2 */
+ &s, /* input pointer */
+ &yield, /* output pointer */
+ &size, /* output size */
+ &ptr, /* output current point */
+ US"listextract", /* condition type */
+ &resetok))
+ {
+ case 1: goto EXPAND_FAILED; /* when all is well, the */
+ case 2: goto EXPAND_FAILED_CURLY; /* returned value is 0 */
+ }
+
+ /* All done - restore numerical variables. */
+
+ restore_expand_strings(save_expand_nmax, save_expand_nstring,
+ save_expand_nlength);
+
+ continue;
+ }
+
+#ifdef SUPPORT_TLS
+ case EITEM_CERTEXTRACT:
+ {
+ uschar *save_lookup_value = lookup_value;
+ uschar *sub[2];
+ int save_expand_nmax =
+ save_expand_strings(save_expand_nstring, save_expand_nlength);
+
+ /* Read the field argument */
+ while (isspace(*s)) s++;
+ if (*s != '{') /*}*/
+ {
+ expand_string_message = US"missing '{' for field arg of certextract";
+ goto EXPAND_FAILED_CURLY;
+ }
+ sub[0] = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok);
+ if (!sub[0]) goto EXPAND_FAILED; /*{*/
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' closing field arg of certextract";
+ goto EXPAND_FAILED_CURLY;
+ }
+ /* strip spaces fore & aft */
+ {
+ int len;
+ uschar *p = sub[0];
+
+ while (isspace(*p)) p++;
+ sub[0] = p;
+
+ len = Ustrlen(p);
+ while (len > 0 && isspace(p[len-1])) len--;
+ p[len] = 0;
+ }
+
+ /* inspect the cert argument */
+ while (isspace(*s)) s++;
+ if (*s != '{') /*}*/
+ {
+ expand_string_message = US"missing '{' for cert variable arg of certextract";
+ goto EXPAND_FAILED_CURLY;
+ }
+ if (*++s != '$')
+ {
+ expand_string_message = US"second argument of \"certextract\" must "
+ "be a certificate variable";
+ goto EXPAND_FAILED;
+ }
+ sub[1] = expand_string_internal(s+1, TRUE, &s, skipping, FALSE, &resetok);
+ if (!sub[1]) goto EXPAND_FAILED; /*{*/
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' closing cert variable arg of certextract";
+ goto EXPAND_FAILED_CURLY;
+ }
+
+ if (skipping)
+ lookup_value = NULL;
+ else
+ {
+ lookup_value = expand_getcertele(sub[0], sub[1]);
+ if (*expand_string_message) goto EXPAND_FAILED;
+ }
+ switch(process_yesno(
+ skipping, /* were previously skipping */
+ lookup_value != NULL, /* success/failure indicator */
+ save_lookup_value, /* value to reset for string2 */
+ &s, /* input pointer */
+ &yield, /* output pointer */
+ &size, /* output size */
+ &ptr, /* output current point */
+ US"certextract", /* condition type */
+ &resetok))
+ {
+ case 1: goto EXPAND_FAILED; /* when all is well, the */
+ case 2: goto EXPAND_FAILED_CURLY; /* returned value is 0 */
+ }
+
+ restore_expand_strings(save_expand_nmax, save_expand_nstring,
+ save_expand_nlength);
+ continue;
+ }
+#endif /*SUPPORT_TLS*/
/* Handle list operations */
int sep = 0;
int save_ptr = ptr;
uschar outsep[2] = { '\0', '\0' };
- uschar *list, *expr, *temp;
+ const uschar *list, *expr, *temp;
uschar *save_iterate_item = iterate_item;
uschar *save_lookup_value = lookup_value;
while (isspace(*s)) s++;
- if (*s++ != '{') goto EXPAND_FAILED_CURLY;
+ if (*s++ != '{')
+ {
+ expand_string_message =
+ string_sprintf("missing '{' for first arg of %s", name);
+ goto EXPAND_FAILED_CURLY;
+ }
- list = expand_string_internal(s, TRUE, &s, skipping, TRUE);
+ list = expand_string_internal(s, TRUE, &s, skipping, TRUE, &resetok);
if (list == NULL) goto EXPAND_FAILED;
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
+ if (*s++ != '}')
+ {
+ expand_string_message =
+ string_sprintf("missing '}' closing first arg of %s", name);
+ goto EXPAND_FAILED_CURLY;
+ }
if (item_type == EITEM_REDUCE)
{
+ uschar * t;
while (isspace(*s)) s++;
- if (*s++ != '{') goto EXPAND_FAILED_CURLY;
- temp = expand_string_internal(s, TRUE, &s, skipping, TRUE);
- if (temp == NULL) goto EXPAND_FAILED;
- lookup_value = temp;
- if (*s++ != '}') goto EXPAND_FAILED_CURLY;
+ if (*s++ != '{')
+ {
+ expand_string_message = US"missing '{' for second arg of reduce";
+ goto EXPAND_FAILED_CURLY;
+ }
+ t = expand_string_internal(s, TRUE, &s, skipping, TRUE, &resetok);
+ if (!t) goto EXPAND_FAILED;
+ lookup_value = t;
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' closing second arg of reduce";
+ goto EXPAND_FAILED_CURLY;
+ }
}
while (isspace(*s)) s++;
- if (*s++ != '{') goto EXPAND_FAILED_CURLY;
+ if (*s++ != '{')
+ {
+ expand_string_message =
+ string_sprintf("missing '{' for last arg of %s", name);
+ goto EXPAND_FAILED_CURLY;
+ }
expr = s;
if (item_type == EITEM_FILTER)
{
- temp = eval_condition(expr, NULL);
+ temp = eval_condition(expr, &resetok, NULL);
if (temp != NULL) s = temp;
}
else
- {
- temp = expand_string_internal(s, TRUE, &s, TRUE, TRUE);
- }
+ temp = expand_string_internal(s, TRUE, &s, TRUE, TRUE, &resetok);
if (temp == NULL)
{
while (isspace(*s)) s++;
if (*s++ != '}')
- {
+ { /*{*/
expand_string_message = string_sprintf("missing } at end of condition "
"or expression inside \"%s\"", name);
goto EXPAND_FAILED;
}
- while (isspace(*s)) s++;
+ while (isspace(*s)) s++; /*{*/
if (*s++ != '}')
- {
+ { /*{*/
expand_string_message = string_sprintf("missing } at end of \"%s\"",
name);
goto EXPAND_FAILED;
if (item_type == EITEM_FILTER)
{
BOOL condresult;
- if (eval_condition(expr, &condresult) == NULL)
+ if (eval_condition(expr, &resetok, &condresult) == NULL)
{
iterate_item = save_iterate_item;
lookup_value = save_lookup_value;
else
{
- temp = expand_string_internal(expr, TRUE, NULL, skipping, TRUE);
+ uschar * t = expand_string_internal(expr, TRUE, NULL, skipping, TRUE, &resetok);
+ temp = t;
if (temp == NULL)
{
iterate_item = save_iterate_item;
}
if (item_type == EITEM_REDUCE)
{
- lookup_value = temp; /* Update the value of $value */
+ lookup_value = t; /* Update the value of $value */
continue; /* and continue the iteration */
}
}
separator character, or is an empty string. */
if (ptr != save_ptr && (temp[0] == *outsep || temp[0] == 0))
- yield = string_cat(yield, &size, &ptr, US" ", 1);
+ yield = string_catn(yield, &size, &ptr, US" ", 1);
/* Add the string in "temp" to the output list that we are building,
This is done in chunks by searching for the separator character. */
for (;;)
{
size_t seglen = Ustrcspn(temp, outsep);
- yield = string_cat(yield, &size, &ptr, temp, seglen + 1);
+
+ yield = string_catn(yield, &size, &ptr, temp, seglen + 1);
/* If we got to the end of the string we output one character
too many; backup and end the loop. Otherwise arrange to double the
separator. */
if (temp[seglen] == '\0') { ptr--; break; }
- yield = string_cat(yield, &size, &ptr, outsep, 1);
+ yield = string_catn(yield, &size, &ptr, outsep, 1);
temp += seglen + 1;
}
/* Output a separator after the string: we will remove the redundant
final one at the end. */
- yield = string_cat(yield, &size, &ptr, outsep, 1);
+ yield = string_catn(yield, &size, &ptr, outsep, 1);
} /* End of iteration over the list loop */
/* REDUCE has generated no output above: output the final value of
if (item_type == EITEM_REDUCE)
{
- yield = string_cat(yield, &size, &ptr, lookup_value,
- Ustrlen(lookup_value));
+ yield = string_cat(yield, &size, &ptr, lookup_value);
lookup_value = save_lookup_value; /* Restore $value */
}
continue;
}
+ case EITEM_SORT:
+ {
+ int sep = 0;
+ const uschar *srclist, *cmp, *xtract;
+ uschar *srcitem;
+ const uschar *dstlist = NULL, *dstkeylist = NULL;
+ uschar * tmp;
+ uschar *save_iterate_item = iterate_item;
+
+ while (isspace(*s)) s++;
+ if (*s++ != '{')
+ {
+ expand_string_message = US"missing '{' for list arg of sort";
+ goto EXPAND_FAILED_CURLY;
+ }
+
+ srclist = expand_string_internal(s, TRUE, &s, skipping, TRUE, &resetok);
+ if (!srclist) goto EXPAND_FAILED;
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' closing list arg of sort";
+ goto EXPAND_FAILED_CURLY;
+ }
+
+ while (isspace(*s)) s++;
+ if (*s++ != '{')
+ {
+ expand_string_message = US"missing '{' for comparator arg of sort";
+ goto EXPAND_FAILED_CURLY;
+ }
+
+ cmp = expand_string_internal(s, TRUE, &s, skipping, FALSE, &resetok);
+ if (!cmp) goto EXPAND_FAILED;
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' closing comparator arg of sort";
+ goto EXPAND_FAILED_CURLY;
+ }
+
+ while (isspace(*s)) s++;
+ if (*s++ != '{')
+ {
+ expand_string_message = US"missing '{' for extractor arg of sort";
+ goto EXPAND_FAILED_CURLY;
+ }
+
+ xtract = s;
+ tmp = expand_string_internal(s, TRUE, &s, TRUE, TRUE, &resetok);
+ if (!tmp) goto EXPAND_FAILED;
+ xtract = string_copyn(xtract, s - xtract);
+
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '}' closing extractor arg of sort";
+ goto EXPAND_FAILED_CURLY;
+ }
+ /*{*/
+ if (*s++ != '}')
+ { /*{*/
+ expand_string_message = US"missing } at end of \"sort\"";
+ goto EXPAND_FAILED;
+ }
+
+ if (skipping) continue;
+
+ while ((srcitem = string_nextinlist(&srclist, &sep, NULL, 0)))
+ {
+ uschar * dstitem;
+ uschar * newlist = NULL;
+ uschar * newkeylist = NULL;
+ uschar * srcfield;
+
+ DEBUG(D_expand) debug_printf("%s: $item = \"%s\"\n", name, srcitem);
+
+ /* extract field for comparisons */
+ iterate_item = srcitem;
+ if ( !(srcfield = expand_string_internal(xtract, FALSE, NULL, FALSE,
+ TRUE, &resetok))
+ || !*srcfield)
+ {
+ expand_string_message = string_sprintf(
+ "field-extract in sort: \"%s\"", xtract);
+ goto EXPAND_FAILED;
+ }
+
+ /* Insertion sort */
+
+ /* copy output list until new-item < list-item */
+ while ((dstitem = string_nextinlist(&dstlist, &sep, NULL, 0)))
+ {
+ uschar * dstfield;
+ uschar * expr;
+ BOOL before;
+
+ /* field for comparison */
+ if (!(dstfield = string_nextinlist(&dstkeylist, &sep, NULL, 0)))
+ goto sort_mismatch;
+
+ /* build and run condition string */
+ expr = string_sprintf("%s{%s}{%s}", cmp, srcfield, dstfield);
+
+ DEBUG(D_expand) debug_printf("%s: cond = \"%s\"\n", name, expr);
+ if (!eval_condition(expr, &resetok, &before))
+ {
+ expand_string_message = string_sprintf("comparison in sort: %s",
+ expr);
+ goto EXPAND_FAILED;
+ }
+
+ if (before)
+ {
+ /* New-item sorts before this dst-item. Append new-item,
+ then dst-item, then remainder of dst list. */
+
+ newlist = string_append_listele(newlist, sep, srcitem);
+ newkeylist = string_append_listele(newkeylist, sep, srcfield);
+ srcitem = NULL;
+
+ newlist = string_append_listele(newlist, sep, dstitem);
+ newkeylist = string_append_listele(newkeylist, sep, dstfield);
+
+ while ((dstitem = string_nextinlist(&dstlist, &sep, NULL, 0)))
+ {
+ if (!(dstfield = string_nextinlist(&dstkeylist, &sep, NULL, 0)))
+ goto sort_mismatch;
+ newlist = string_append_listele(newlist, sep, dstitem);
+ newkeylist = string_append_listele(newkeylist, sep, dstfield);
+ }
+
+ break;
+ }
+
+ newlist = string_append_listele(newlist, sep, dstitem);
+ newkeylist = string_append_listele(newkeylist, sep, dstfield);
+ }
+
+ /* If we ran out of dstlist without consuming srcitem, append it */
+ if (srcitem)
+ {
+ newlist = string_append_listele(newlist, sep, srcitem);
+ newkeylist = string_append_listele(newkeylist, sep, srcfield);
+ }
+
+ dstlist = newlist;
+ dstkeylist = newkeylist;
+
+ DEBUG(D_expand) debug_printf("%s: dstlist = \"%s\"\n", name, dstlist);
+ DEBUG(D_expand) debug_printf("%s: dstkeylist = \"%s\"\n", name, dstkeylist);
+ }
+
+ if (dstlist)
+ yield = string_cat(yield, &size, &ptr, dstlist);
+
+ /* Restore preserved $item */
+ iterate_item = save_iterate_item;
+ continue;
+
+ sort_mismatch:
+ expand_string_message = US"Internal error in sort (list mismatch)";
+ goto EXPAND_FAILED;
+ }
+
- /* If ${dlfunc support is configured, handle calling dynamically-loaded
+ /* If ${dlfunc } support is configured, handle calling dynamically-loaded
functions, unless locked out at this time. Syntax is ${dlfunc{file}{func}}
or ${dlfunc{file}{func}{arg}} or ${dlfunc{file}{func}{arg1}{arg2}} or up to
a maximum of EXPAND_DLFUNC_MAX_ARGS arguments (defined below). */
#define EXPAND_DLFUNC_MAX_ARGS 8
case EITEM_DLFUNC:
- #ifndef EXPAND_DLFUNC
- expand_string_message = US"\"${dlfunc\" encountered, but this facility "
- "is not included in this binary";
- goto EXPAND_FAILED;
+#ifndef EXPAND_DLFUNC
+ expand_string_message = US"\"${dlfunc\" encountered, but this facility " /*}*/
+ "is not included in this binary";
+ goto EXPAND_FAILED;
- #else /* EXPAND_DLFUNC */
+#else /* EXPAND_DLFUNC */
{
tree_node *t;
exim_dlfunc_t *func;
}
switch(read_subs(argv, EXPAND_DLFUNC_MAX_ARGS + 2, 2, &s, skipping,
- TRUE, US"dlfunc"))
+ TRUE, US"dlfunc", &resetok))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
if(status == OK)
{
if (result == NULL) result = US"";
- yield = string_cat(yield, &size, &ptr, result, Ustrlen(result));
+ yield = string_cat(yield, &size, &ptr, result);
continue;
}
else
goto EXPAND_FAILED;
}
}
- #endif /* EXPAND_DLFUNC */
- }
+#endif /* EXPAND_DLFUNC */
+
+ case EITEM_ENV: /* ${env {name} {val_if_found} {val_if_unfound}} */
+ {
+ uschar * key;
+ uschar *save_lookup_value = lookup_value;
+
+ while (isspace(*s)) s++;
+ if (*s != '{') /*}*/
+ goto EXPAND_FAILED;
+
+ key = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok);
+ if (!key) goto EXPAND_FAILED; /*{*/
+ if (*s++ != '}')
+ {
+ expand_string_message = US"missing '{' for name arg of env";
+ goto EXPAND_FAILED_CURLY;
+ }
+
+ lookup_value = US getenv(CS key);
+
+ switch(process_yesno(
+ skipping, /* were previously skipping */
+ lookup_value != NULL, /* success/failure indicator */
+ save_lookup_value, /* value to reset for string2 */
+ &s, /* input pointer */
+ &yield, /* output pointer */
+ &size, /* output size */
+ &ptr, /* output current point */
+ US"env", /* condition type */
+ &resetok))
+ {
+ case 1: goto EXPAND_FAILED; /* when all is well, the */
+ case 2: goto EXPAND_FAILED_CURLY; /* returned value is 0 */
+ }
+ continue;
+ }
+ } /* EITEM_* switch */
/* Control reaches here if the name is not recognized as one of the more
complicated expansion items. Check for the "operator" syntax (name terminated
{
int c;
uschar *arg = NULL;
- uschar *sub = expand_string_internal(s+1, TRUE, &s, skipping, TRUE);
- if (sub == NULL) goto EXPAND_FAILED;
- s++;
+ uschar *sub;
+ var_entry *vp = NULL;
/* Owing to an historical mis-design, an underscore may be part of the
operator name, or it may introduce arguments. We therefore first scan the
table of names that contain underscores. If there is no match, we cut off
the arguments and then scan the main table. */
- c = chop_match(name, op_table_underscore,
- sizeof(op_table_underscore)/sizeof(uschar *));
-
- if (c < 0)
+ if ((c = chop_match(name, op_table_underscore,
+ nelem(op_table_underscore))) < 0)
{
arg = Ustrchr(name, '_');
if (arg != NULL) *arg = 0;
- c = chop_match(name, op_table_main,
- sizeof(op_table_main)/sizeof(uschar *));
- if (c >= 0) c += sizeof(op_table_underscore)/sizeof(uschar *);
+ c = chop_match(name, op_table_main, nelem(op_table_main));
+ if (c >= 0) c += nelem(op_table_underscore);
if (arg != NULL) *arg++ = '_'; /* Put back for error messages */
}
+ /* Deal specially with operators that might take a certificate variable
+ as we do not want to do the usual expansion. For most, expand the string.*/
+ switch(c)
+ {
+#ifdef SUPPORT_TLS
+ case EOP_MD5:
+ case EOP_SHA1:
+ case EOP_SHA256:
+ case EOP_BASE64:
+ if (s[1] == '$')
+ {
+ const uschar * s1 = s;
+ sub = expand_string_internal(s+2, TRUE, &s1, skipping,
+ FALSE, &resetok);
+ if (!sub) goto EXPAND_FAILED; /*{*/
+ if (*s1 != '}')
+ {
+ expand_string_message =
+ string_sprintf("missing '}' closing cert arg of %s", name);
+ goto EXPAND_FAILED_CURLY;
+ }
+ if ((vp = find_var_ent(sub)) && vp->type == vtype_cert)
+ {
+ s = s1+1;
+ break;
+ }
+ vp = NULL;
+ }
+ /*FALLTHROUGH*/
+#endif
+ default:
+ sub = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok);
+ if (!sub) goto EXPAND_FAILED;
+ s++;
+ break;
+ }
+
/* If we are skipping, we don't need to perform the operation at all.
This matters for operations like "mask", because the data may not be
in the correct format when skipping. For example, the expression may test
switch(c)
{
+ case EOP_BASE32:
+ {
+ uschar *t;
+ unsigned long int n = Ustrtoul(sub, &t, 10);
+ uschar * s = NULL;
+ int sz = 0, i = 0;
+
+ if (*t != 0)
+ {
+ expand_string_message = string_sprintf("argument for base32 "
+ "operator is \"%s\", which is not a decimal number", sub);
+ goto EXPAND_FAILED;
+ }
+ for ( ; n; n >>= 5)
+ s = string_catn(s, &sz, &i, &base32_chars[n & 0x1f], 1);
+
+ while (i > 0) yield = string_catn(yield, &size, &ptr, &s[--i], 1);
+ continue;
+ }
+
+ case EOP_BASE32D:
+ {
+ uschar *tt = sub;
+ unsigned long int n = 0;
+ uschar * s;
+ while (*tt)
+ {
+ uschar * t = Ustrchr(base32_chars, *tt++);
+ if (t == NULL)
+ {
+ expand_string_message = string_sprintf("argument for base32d "
+ "operator is \"%s\", which is not a base 32 number", sub);
+ goto EXPAND_FAILED;
+ }
+ n = n * 32 + (t - base32_chars);
+ }
+ s = string_sprintf("%ld", n);
+ yield = string_cat(yield, &size, &ptr, s);
+ continue;
+ }
+
case EOP_BASE62:
{
uschar *t;
goto EXPAND_FAILED;
}
t = string_base62(n);
- yield = string_cat(yield, &size, &ptr, t, Ustrlen(t));
+ yield = string_cat(yield, &size, &ptr, t);
continue;
}
n = n * BASE_62 + (t - base62_chars);
}
(void)sprintf(CS buf, "%ld", n);
- yield = string_cat(yield, &size, &ptr, buf, Ustrlen(buf));
+ yield = string_cat(yield, &size, &ptr, buf);
continue;
}
case EOP_EXPAND:
{
- uschar *expanded = expand_string_internal(sub, FALSE, NULL, skipping, TRUE);
+ uschar *expanded = expand_string_internal(sub, FALSE, NULL, skipping, TRUE, &resetok);
if (expanded == NULL)
{
expand_string_message =
expand_string_message);
goto EXPAND_FAILED;
}
- yield = string_cat(yield, &size, &ptr, expanded, Ustrlen(expanded));
+ yield = string_cat(yield, &size, &ptr, expanded);
continue;
}
int count = 0;
uschar *t = sub - 1;
while (*(++t) != 0) { *t = tolower(*t); count++; }
- yield = string_cat(yield, &size, &ptr, sub, count);
+ yield = string_catn(yield, &size, &ptr, sub, count);
continue;
}
int count = 0;
uschar *t = sub - 1;
while (*(++t) != 0) { *t = toupper(*t); count++; }
- yield = string_cat(yield, &size, &ptr, sub, count);
+ yield = string_catn(yield, &size, &ptr, sub, count);
continue;
}
case EOP_MD5:
- {
- md5 base;
- uschar digest[16];
- int j;
- char st[33];
- md5_start(&base);
- md5_end(&base, sub, Ustrlen(sub), digest);
- for(j = 0; j < 16; j++) sprintf(st+2*j, "%02x", digest[j]);
- yield = string_cat(yield, &size, &ptr, US st, (int)strlen(st));
+#ifdef SUPPORT_TLS
+ if (vp && *(void **)vp->value)
+ {
+ uschar * cp = tls_cert_fprt_md5(*(void **)vp->value);
+ yield = string_cat(yield, &size, &ptr, cp);
+ }
+ else
+#endif
+ {
+ md5 base;
+ uschar digest[16];
+ int j;
+ char st[33];
+ md5_start(&base);
+ md5_end(&base, sub, Ustrlen(sub), digest);
+ for(j = 0; j < 16; j++) sprintf(st+2*j, "%02x", digest[j]);
+ yield = string_cat(yield, &size, &ptr, US st);
+ }
continue;
- }
case EOP_SHA1:
- {
- sha1 base;
- uschar digest[20];
- int j;
- char st[41];
- sha1_start(&base);
- sha1_end(&base, sub, Ustrlen(sub), digest);
- for(j = 0; j < 20; j++) sprintf(st+2*j, "%02X", digest[j]);
- yield = string_cat(yield, &size, &ptr, US st, (int)strlen(st));
+#ifdef SUPPORT_TLS
+ if (vp && *(void **)vp->value)
+ {
+ uschar * cp = tls_cert_fprt_sha1(*(void **)vp->value);
+ yield = string_cat(yield, &size, &ptr, cp);
+ }
+ else
+#endif
+ {
+ hctx h;
+ uschar digest[20];
+ int j;
+ char st[41];
+ sha1_start(&h);
+ sha1_end(&h, sub, Ustrlen(sub), digest);
+ for(j = 0; j < 20; j++) sprintf(st+2*j, "%02X", digest[j]);
+ yield = string_catn(yield, &size, &ptr, US st, 40);
+ }
continue;
- }
+
+ case EOP_SHA256:
+#ifdef EXIM_HAVE_SHA2
+ if (vp && *(void **)vp->value)
+ {
+ uschar * cp = tls_cert_fprt_sha256(*(void **)vp->value);
+ yield = string_cat(yield, &size, &ptr, cp);
+ }
+ else
+ {
+ hctx h;
+ blob b;
+ char st[3];
+
+ exim_sha_init(&h, HASH_SHA256);
+ exim_sha_update(&h, sub, Ustrlen(sub));
+ exim_sha_finish(&h, &b);
+ while (b.len-- > 0)
+ {
+ sprintf(st, "%02X", *b.data++);
+ yield = string_catn(yield, &size, &ptr, US st, 2);
+ }
+ }
+#else
+ expand_string_message = US"sha256 only supported with TLS";
+#endif
+ continue;
+
+ case EOP_SHA3:
+#ifdef EXIM_HAVE_SHA3
+ {
+ hctx h;
+ blob b;
+ char st[3];
+ hashmethod m = !arg ? HASH_SHA3_256
+ : Ustrcmp(arg, "224") == 0 ? HASH_SHA3_224
+ : Ustrcmp(arg, "256") == 0 ? HASH_SHA3_256
+ : Ustrcmp(arg, "384") == 0 ? HASH_SHA3_384
+ : Ustrcmp(arg, "512") == 0 ? HASH_SHA3_512
+ : HASH_BADTYPE;
+
+ if (m == HASH_BADTYPE)
+ {
+ expand_string_message = US"unrecognised sha3 variant";
+ goto EXPAND_FAILED;
+ }
+
+ exim_sha_init(&h, m);
+ exim_sha_update(&h, sub, Ustrlen(sub));
+ exim_sha_finish(&h, &b);
+ while (b.len-- > 0)
+ {
+ sprintf(st, "%02X", *b.data++);
+ yield = string_catn(yield, &size, &ptr, US st, 2);
+ }
+ }
+ continue;
+#else
+ expand_string_message = US"sha3 only supported with GnuTLS 3.5.0 +";
+ goto EXPAND_FAILED;
+#endif
/* Convert hex encoding to base64 encoding */
}
}
- enc = auth_b64encode(sub, out - sub);
- yield = string_cat(yield, &size, &ptr, enc, Ustrlen(enc));
+ enc = b64encode(sub, out - sub);
+ yield = string_cat(yield, &size, &ptr, enc);
continue;
}
+ /* Convert octets outside 0x21..0x7E to \xXX form */
+
+ case EOP_HEXQUOTE:
+ {
+ uschar *t = sub - 1;
+ while (*(++t) != 0)
+ {
+ if (*t < 0x21 || 0x7E < *t)
+ yield = string_catn(yield, &size, &ptr,
+ string_sprintf("\\x%02x", *t), 4);
+ else
+ yield = string_catn(yield, &size, &ptr, t, 1);
+ }
+ continue;
+ }
+
+ /* count the number of list elements */
+
+ case EOP_LISTCOUNT:
+ {
+ int cnt = 0;
+ int sep = 0;
+ uschar * cp;
+ uschar buffer[256];
+
+ while (string_nextinlist(CUSS &sub, &sep, buffer, sizeof(buffer)) != NULL) cnt++;
+ cp = string_sprintf("%d", cnt);
+ yield = string_cat(yield, &size, &ptr, cp);
+ continue;
+ }
+
+ /* expand a named list given the name */
+ /* handles nested named lists; requotes as colon-sep list */
+
+ case EOP_LISTNAMED:
+ {
+ tree_node *t = NULL;
+ const uschar * list;
+ int sep = 0;
+ uschar * item;
+ uschar * suffix = US"";
+ BOOL needsep = FALSE;
+ uschar buffer[256];
+
+ if (*sub == '+') sub++;
+ if (arg == NULL) /* no-argument version */
+ {
+ if (!(t = tree_search(addresslist_anchor, sub)) &&
+ !(t = tree_search(domainlist_anchor, sub)) &&
+ !(t = tree_search(hostlist_anchor, sub)))
+ t = tree_search(localpartlist_anchor, sub);
+ }
+ else switch(*arg) /* specific list-type version */
+ {
+ case 'a': t = tree_search(addresslist_anchor, sub); suffix = US"_a"; break;
+ case 'd': t = tree_search(domainlist_anchor, sub); suffix = US"_d"; break;
+ case 'h': t = tree_search(hostlist_anchor, sub); suffix = US"_h"; break;
+ case 'l': t = tree_search(localpartlist_anchor, sub); suffix = US"_l"; break;
+ default:
+ expand_string_message = string_sprintf("bad suffix on \"list\" operator");
+ goto EXPAND_FAILED;
+ }
+
+ if(!t)
+ {
+ expand_string_message = string_sprintf("\"%s\" is not a %snamed list",
+ sub, !arg?""
+ : *arg=='a'?"address "
+ : *arg=='d'?"domain "
+ : *arg=='h'?"host "
+ : *arg=='l'?"localpart "
+ : 0);
+ goto EXPAND_FAILED;
+ }
+
+ list = ((namedlist_block *)(t->data.ptr))->string;
+
+ while ((item = string_nextinlist(&list, &sep, buffer, sizeof(buffer))) != NULL)
+ {
+ uschar * buf = US" : ";
+ if (needsep)
+ yield = string_catn(yield, &size, &ptr, buf, 3);
+ else
+ needsep = TRUE;
+
+ if (*item == '+') /* list item is itself a named list */
+ {
+ uschar * sub = string_sprintf("${listnamed%s:%s}", suffix, item);
+ item = expand_string_internal(sub, FALSE, NULL, FALSE, TRUE, &resetok);
+ }
+ else if (sep != ':') /* item from non-colon-sep list, re-quote for colon list-separator */
+ {
+ char * cp;
+ char tok[3];
+ tok[0] = sep; tok[1] = ':'; tok[2] = 0;
+ while ((cp= strpbrk((const char *)item, tok)))
+ {
+ yield = string_catn(yield, &size, &ptr, item, cp-(char *)item);
+ if (*cp++ == ':') /* colon in a non-colon-sep list item, needs doubling */
+ {
+ yield = string_catn(yield, &size, &ptr, US"::", 2);
+ item = (uschar *)cp;
+ }
+ else /* sep in item; should already be doubled; emit once */
+ {
+ yield = string_catn(yield, &size, &ptr, (uschar *)tok, 1);
+ if (*cp == sep) cp++;
+ item = (uschar *)cp;
+ }
+ }
+ }
+ yield = string_cat(yield, &size, &ptr, item);
+ }
+ continue;
+ }
+
/* mask applies a mask to an IP address; for example the result of
${mask:131.111.10.206/28} is 131.111.10.192/28. */
/* Convert to masked textual format and add to output. */
- yield = string_cat(yield, &size, &ptr, buffer,
+ yield = string_catn(yield, &size, &ptr, buffer,
host_nmtoa(count, binary, mask, buffer, '.'));
continue;
}
+ case EOP_IPV6NORM:
+ case EOP_IPV6DENORM:
+ {
+ int type = string_is_ip_address(sub, NULL);
+ int binary[4];
+ uschar buffer[44];
+
+ switch (type)
+ {
+ case 6:
+ (void) host_aton(sub, binary);
+ break;
+
+ case 4: /* convert to IPv4-mapped IPv6 */
+ binary[0] = binary[1] = 0;
+ binary[2] = 0x0000ffff;
+ (void) host_aton(sub, binary+3);
+ break;
+
+ case 0:
+ expand_string_message =
+ string_sprintf("\"%s\" is not an IP address", sub);
+ goto EXPAND_FAILED;
+ }
+
+ yield = string_catn(yield, &size, &ptr, buffer,
+ c == EOP_IPV6NORM
+ ? ipv6_nmtoa(binary, buffer)
+ : host_nmtoa(4, binary, -1, buffer, ':')
+ );
+ continue;
+ }
+
case EOP_ADDRESS:
case EOP_LOCAL_PART:
case EOP_DOMAIN:
if (c != EOP_DOMAIN)
{
if (c == EOP_LOCAL_PART && domain != 0) end = start + domain - 1;
- yield = string_cat(yield, &size, &ptr, sub+start, end-start);
+ yield = string_catn(yield, &size, &ptr, sub+start, end-start);
}
else if (domain != 0)
{
domain += start;
- yield = string_cat(yield, &size, &ptr, sub+domain, end-domain);
+ yield = string_catn(yield, &size, &ptr, sub+domain, end-domain);
}
}
continue;
if (address != NULL)
{
if (ptr != save_ptr && address[0] == *outsep)
- yield = string_cat(yield, &size, &ptr, US" ", 1);
+ yield = string_catn(yield, &size, &ptr, US" ", 1);
for (;;)
{
size_t seglen = Ustrcspn(address, outsep);
- yield = string_cat(yield, &size, &ptr, address, seglen + 1);
+ yield = string_catn(yield, &size, &ptr, address, seglen + 1);
/* If we got to the end of the string we output one character
too many. */
if (address[seglen] == '\0') { ptr--; break; }
- yield = string_cat(yield, &size, &ptr, outsep, 1);
+ yield = string_catn(yield, &size, &ptr, outsep, 1);
address += seglen + 1;
}
/* Output a separator after the string: we will remove the
redundant final one at the end. */
- yield = string_cat(yield, &size, &ptr, outsep, 1);
+ yield = string_catn(yield, &size, &ptr, outsep, 1);
}
if (saveend == '\0') break;
if (needs_quote)
{
- yield = string_cat(yield, &size, &ptr, US"\"", 1);
+ yield = string_catn(yield, &size, &ptr, US"\"", 1);
t = sub - 1;
while (*(++t) != 0)
{
if (*t == '\n')
- yield = string_cat(yield, &size, &ptr, US"\\n", 2);
+ yield = string_catn(yield, &size, &ptr, US"\\n", 2);
else if (*t == '\r')
- yield = string_cat(yield, &size, &ptr, US"\\r", 2);
+ yield = string_catn(yield, &size, &ptr, US"\\r", 2);
else
{
if (*t == '\\' || *t == '"')
- yield = string_cat(yield, &size, &ptr, US"\\", 1);
- yield = string_cat(yield, &size, &ptr, t, 1);
+ yield = string_catn(yield, &size, &ptr, US"\\", 1);
+ yield = string_catn(yield, &size, &ptr, t, 1);
}
}
- yield = string_cat(yield, &size, &ptr, US"\"", 1);
+ yield = string_catn(yield, &size, &ptr, US"\"", 1);
}
- else yield = string_cat(yield, &size, &ptr, sub, Ustrlen(sub));
+ else yield = string_cat(yield, &size, &ptr, sub);
continue;
}
goto EXPAND_FAILED;
}
- yield = string_cat(yield, &size, &ptr, sub, Ustrlen(sub));
+ yield = string_cat(yield, &size, &ptr, sub);
continue;
}
while (*(++t) != 0)
{
if (!isalnum(*t))
- yield = string_cat(yield, &size, &ptr, US"\\", 1);
- yield = string_cat(yield, &size, &ptr, t, 1);
+ yield = string_catn(yield, &size, &ptr, US"\\", 1);
+ yield = string_catn(yield, &size, &ptr, t, 1);
}
continue;
}
case EOP_RFC2047:
{
uschar buffer[2048];
- uschar *string = parse_quote_2047(sub, Ustrlen(sub), headers_charset,
+ const uschar *string = parse_quote_2047(sub, Ustrlen(sub), headers_charset,
buffer, sizeof(buffer), FALSE);
- yield = string_cat(yield, &size, &ptr, string, Ustrlen(string));
+ yield = string_cat(yield, &size, &ptr, string);
continue;
}
expand_string_message = error;
goto EXPAND_FAILED;
}
- yield = string_cat(yield, &size, &ptr, decoded, len);
+ yield = string_catn(yield, &size, &ptr, decoded, len);
continue;
}
GETUTF8INC(c, sub);
if (c > 255) c = '_';
buff[0] = c;
- yield = string_cat(yield, &size, &ptr, buff, 1);
+ yield = string_catn(yield, &size, &ptr, buff, 1);
}
continue;
}
+ /* replace illegal UTF-8 sequences by replacement character */
+
+ #define UTF8_REPLACEMENT_CHAR US"?"
+
+ case EOP_UTF8CLEAN:
+ {
+ int seq_len = 0, index = 0;
+ int bytes_left = 0;
+ long codepoint = -1;
+ uschar seq_buff[4]; /* accumulate utf-8 here */
+
+ while (*sub != 0)
+ {
+ int complete = 0;
+ uschar c = *sub++;
+
+ if (bytes_left)
+ {
+ if ((c & 0xc0) != 0x80)
+ /* wrong continuation byte; invalidate all bytes */
+ complete = 1; /* error */
+ else
+ {
+ codepoint = (codepoint << 6) | (c & 0x3f);
+ seq_buff[index++] = c;
+ if (--bytes_left == 0) /* codepoint complete */
+ if(codepoint > 0x10FFFF) /* is it too large? */
+ complete = -1; /* error (RFC3629 limit) */
+ else
+ { /* finished; output utf-8 sequence */
+ yield = string_catn(yield, &size, &ptr, seq_buff, seq_len);
+ index = 0;
+ }
+ }
+ }
+ else /* no bytes left: new sequence */
+ {
+ if((c & 0x80) == 0) /* 1-byte sequence, US-ASCII, keep it */
+ {
+ yield = string_catn(yield, &size, &ptr, &c, 1);
+ continue;
+ }
+ if((c & 0xe0) == 0xc0) /* 2-byte sequence */
+ {
+ if(c == 0xc0 || c == 0xc1) /* 0xc0 and 0xc1 are illegal */
+ complete = -1;
+ else
+ {
+ bytes_left = 1;
+ codepoint = c & 0x1f;
+ }
+ }
+ else if((c & 0xf0) == 0xe0) /* 3-byte sequence */
+ {
+ bytes_left = 2;
+ codepoint = c & 0x0f;
+ }
+ else if((c & 0xf8) == 0xf0) /* 4-byte sequence */
+ {
+ bytes_left = 3;
+ codepoint = c & 0x07;
+ }
+ else /* invalid or too long (RFC3629 allows only 4 bytes) */
+ complete = -1;
+
+ seq_buff[index++] = c;
+ seq_len = bytes_left + 1;
+ } /* if(bytes_left) */
+
+ if (complete != 0)
+ {
+ bytes_left = index = 0;
+ yield = string_catn(yield, &size, &ptr, UTF8_REPLACEMENT_CHAR, 1);
+ }
+ if ((complete == 1) && ((c & 0x80) == 0))
+ /* ASCII character follows incomplete sequence */
+ yield = string_catn(yield, &size, &ptr, &c, 1);
+ }
+ continue;
+ }
+
+#ifdef SUPPORT_I18N
+ case EOP_UTF8_DOMAIN_TO_ALABEL:
+ {
+ uschar * error = NULL;
+ uschar * s = string_domain_utf8_to_alabel(sub, &error);
+ if (error)
+ {
+ expand_string_message = string_sprintf(
+ "error converting utf8 (%s) to alabel: %s",
+ string_printing(sub), error);
+ goto EXPAND_FAILED;
+ }
+ yield = string_cat(yield, &size, &ptr, s);
+ continue;
+ }
+
+ case EOP_UTF8_DOMAIN_FROM_ALABEL:
+ {
+ uschar * error = NULL;
+ uschar * s = string_domain_alabel_to_utf8(sub, &error);
+ if (error)
+ {
+ expand_string_message = string_sprintf(
+ "error converting alabel (%s) to utf8: %s",
+ string_printing(sub), error);
+ goto EXPAND_FAILED;
+ }
+ yield = string_cat(yield, &size, &ptr, s);
+ continue;
+ }
+
+ case EOP_UTF8_LOCALPART_TO_ALABEL:
+ {
+ uschar * error = NULL;
+ uschar * s = string_localpart_utf8_to_alabel(sub, &error);
+ if (error)
+ {
+ expand_string_message = string_sprintf(
+ "error converting utf8 (%s) to alabel: %s",
+ string_printing(sub), error);
+ goto EXPAND_FAILED;
+ }
+ yield = string_cat(yield, &size, &ptr, s);
+ DEBUG(D_expand) debug_printf("yield: '%s'\n", yield);
+ continue;
+ }
+
+ case EOP_UTF8_LOCALPART_FROM_ALABEL:
+ {
+ uschar * error = NULL;
+ uschar * s = string_localpart_alabel_to_utf8(sub, &error);
+ if (error)
+ {
+ expand_string_message = string_sprintf(
+ "error converting alabel (%s) to utf8: %s",
+ string_printing(sub), error);
+ goto EXPAND_FAILED;
+ }
+ yield = string_cat(yield, &size, &ptr, s);
+ continue;
+ }
+#endif /* EXPERIMENTAL_INTERNATIONAL */
+
/* escape turns all non-printing characters into escape sequences. */
case EOP_ESCAPE:
{
- uschar *t = string_printing(sub);
- yield = string_cat(yield, &size, &ptr, t, Ustrlen(t));
+ const uschar * t = string_printing(sub);
+ yield = string_cat(yield, &size, &ptr, t);
continue;
}
+ case EOP_ESCAPE8BIT:
+ {
+ const uschar * s = sub;
+ uschar c;
+
+ for (s = sub; (c = *s); s++)
+ yield = c < 127 && c != '\\'
+ ? string_catn(yield, &size, &ptr, s, 1)
+ : string_catn(yield, &size, &ptr, string_sprintf("\\%03o", c), 4);
+ continue;
+ }
+
/* Handle numeric expression evaluation */
case EOP_EVAL:
goto EXPAND_FAILED;
}
sprintf(CS var_buffer, PR_EXIM_ARITH, n);
- yield = string_cat(yield, &size, &ptr, var_buffer, Ustrlen(var_buffer));
+ yield = string_cat(yield, &size, &ptr, var_buffer);
continue;
}
goto EXPAND_FAILED;
}
sprintf(CS var_buffer, "%d", n);
- yield = string_cat(yield, &size, &ptr, var_buffer, Ustrlen(var_buffer));
+ yield = string_cat(yield, &size, &ptr, var_buffer);
continue;
}
goto EXPAND_FAILED;
}
t = readconf_printtime(n);
- yield = string_cat(yield, &size, &ptr, t, Ustrlen(t));
+ yield = string_cat(yield, &size, &ptr, t);
continue;
}
/* Convert string to base64 encoding */
case EOP_STR2B64:
+ case EOP_BASE64:
+ {
+#ifdef SUPPORT_TLS
+ uschar * s = vp && *(void **)vp->value
+ ? tls_cert_der_b64(*(void **)vp->value)
+ : b64encode(sub, Ustrlen(sub));
+#else
+ uschar * s = b64encode(sub, Ustrlen(sub));
+#endif
+ yield = string_cat(yield, &size, &ptr, s);
+ continue;
+ }
+
+ case EOP_BASE64D:
{
- uschar *encstr = auth_b64encode(sub, Ustrlen(sub));
- yield = string_cat(yield, &size, &ptr, encstr, Ustrlen(encstr));
+ uschar * s;
+ int len = b64decode(sub, &s);
+ if (len < 0)
+ {
+ expand_string_message = string_sprintf("string \"%s\" is not "
+ "well-formed for \"%s\" operator", sub, name);
+ goto EXPAND_FAILED;
+ }
+ yield = string_cat(yield, &size, &ptr, s);
continue;
}
{
uschar buff[24];
(void)sprintf(CS buff, "%d", Ustrlen(sub));
- yield = string_cat(yield, &size, &ptr, buff, Ustrlen(buff));
+ yield = string_cat(yield, &size, &ptr, buff);
continue;
}
extract_substr(sub, value1, value2, &len);
if (ret == NULL) goto EXPAND_FAILED;
- yield = string_cat(yield, &size, &ptr, ret, len);
+ yield = string_catn(yield, &size, &ptr, ret, len);
continue;
}
(long)st.st_dev, (long)st.st_nlink, (long)st.st_uid,
(long)st.st_gid, st.st_size, (long)st.st_atime,
(long)st.st_mtime, (long)st.st_ctime);
- yield = string_cat(yield, &size, &ptr, s, Ustrlen(s));
+ yield = string_cat(yield, &size, &ptr, s);
continue;
}
int_eximarith_t max;
uschar *s;
- max = expand_string_integer(sub, TRUE);
+ max = expanded_string_integer(sub, TRUE);
if (expand_string_message != NULL)
goto EXPAND_FAILED;
s = string_sprintf("%d", vaguely_random_number((int)max));
- yield = string_cat(yield, &size, &ptr, s, Ustrlen(s));
+ yield = string_cat(yield, &size, &ptr, s);
continue;
}
goto EXPAND_FAILED;
}
invert_address(reversed, sub);
- yield = string_cat(yield, &size, &ptr, reversed, Ustrlen(reversed));
+ yield = string_cat(yield, &size, &ptr, reversed);
continue;
}
store instead of copying. Many expansion strings contain just one reference,
so this is a useful optimization, especially for humungous headers
($message_headers). */
-
+ /*{*/
if (*s++ == '}')
{
int len;
yield = NULL;
size = 0;
}
- value = find_variable(name, FALSE, skipping, &newsize);
- if (value == NULL)
+ if (!(value = find_variable(name, FALSE, skipping, &newsize)))
{
expand_string_message =
string_sprintf("unknown variable in \"${%s}\"", name);
goto EXPAND_FAILED;
}
len = Ustrlen(value);
- if (yield == NULL && newsize != 0)
+ if (!yield && newsize)
{
yield = value;
size = newsize;
ptr = len;
}
- else yield = string_cat(yield, &size, &ptr, value, len);
+ else
+ yield = string_catn(yield, &size, &ptr, value, len);
continue;
}
will be optimal store usage. */
if (resetok) store_reset(yield + ptr + 1);
+else if (resetok_p) *resetok_p = FALSE;
+
DEBUG(D_expand)
{
- debug_printf("expanding: %.*s\n result: %s\n", (int)(s - string), string,
+ debug_printf(" expanding: %.*s\n result: %s\n", (int)(s - string), string,
yield);
- if (skipping) debug_printf("skipping: result is not used\n");
+ if (skipping) debug_printf(" skipping: result is not used\n");
}
return yield;
*/
EXPAND_FAILED_CURLY:
-expand_string_message = malformed_header?
- US"missing or misplaced { or } - could be header name not terminated by colon"
- :
- US"missing or misplaced { or }";
+if (malformed_header)
+ expand_string_message =
+ US"missing or misplaced { or } - could be header name not terminated by colon";
+
+else if (!expand_string_message || !*expand_string_message)
+ expand_string_message = US"missing or misplaced { or }";
/* At one point, Exim reset the store to yield (if yield was not NULL), but
that is a bad idea, because expand_string_message is in dynamic store. */
debug_printf(" error message: %s\n", expand_string_message);
if (expand_string_forcedfail) debug_printf("failure was forced\n");
}
+if (resetok_p) *resetok_p = resetok;
return NULL;
}
search_find_defer = FALSE;
malformed_header = FALSE;
return (Ustrpbrk(string, "$\\") == NULL)? string :
- expand_string_internal(string, FALSE, NULL, FALSE, TRUE);
+ expand_string_internal(string, FALSE, NULL, FALSE, TRUE, NULL);
+}
+
+
+
+const uschar *
+expand_cstring(const uschar *string)
+{
+search_find_defer = FALSE;
+malformed_header = FALSE;
+return (Ustrpbrk(string, "$\\") == NULL)? string :
+ expand_string_internal(string, FALSE, NULL, FALSE, TRUE, NULL);
}
/* Now and again we want to expand a string and be sure that the result is in a
new bit of store. This function does that.
+Since we know it has been copied, the de-const cast is safe.
Argument: the string to be expanded
Returns: the expanded string, always in a new bit of store, or NULL
*/
uschar *
-expand_string_copy(uschar *string)
+expand_string_copy(const uschar *string)
{
-uschar *yield = expand_string(string);
+const uschar *yield = expand_cstring(string);
if (yield == string) yield = string_copy(string);
-return yield;
+return US yield;
}
int_eximarith_t
expand_string_integer(uschar *string, BOOL isplus)
{
+return expanded_string_integer(expand_string(string), isplus);
+}
+
+
+/*************************************************
+ * Interpret string as an integer *
+ *************************************************/
+
+/* Convert a string (that has already been expanded) into an integer.
+
+This function is used inside the expansion code.
+
+Arguments:
+ s the string to be expanded
+ isplus TRUE if a non-negative number is expected
+
+Returns: the integer value, or
+ -1 if string is NULL (which implies an expansion error)
+ -2 for an integer interpretation error
+ expand_string_message is set NULL for an OK integer
+*/
+
+static int_eximarith_t
+expanded_string_integer(const uschar *s, BOOL isplus)
+{
int_eximarith_t value;
-uschar *s = expand_string(string);
uschar *msg = US"invalid integer \"%s\"";
uschar *endptr;
}
else
{
- if (tolower(*endptr) == 'k')
+ switch (tolower(*endptr))
{
- if (value > LLONG_MAX/1024 || value < LLONG_MIN/1024) errno = ERANGE;
+ default:
+ break;
+ case 'k':
+ if (value > EXIM_ARITH_MAX/1024 || value < EXIM_ARITH_MIN/1024) errno = ERANGE;
else value *= 1024;
- endptr++;
- }
- else if (tolower(*endptr) == 'm')
- {
- if (value > LLONG_MAX/(1024*1024) || value < LLONG_MIN/(1024*1024))
- errno = ERANGE;
- else value *= 1024*1024;
- endptr++;
+ endptr++;
+ break;
+ case 'm':
+ if (value > EXIM_ARITH_MAX/(1024*1024) || value < EXIM_ARITH_MIN/(1024*1024)) errno = ERANGE;
+ else value *= 1024*1024;
+ endptr++;
+ break;
+ case 'g':
+ if (value > EXIM_ARITH_MAX/(1024*1024*1024) || value < EXIM_ARITH_MIN/(1024*1024*1024)) errno = ERANGE;
+ else value *= 1024*1024*1024;
+ endptr++;
+ break;
}
if (errno == ERANGE)
msg = US"absolute value of integer \"%s\" is too large (overflow)";
else
{
while (isspace(*endptr)) endptr++;
- if (*endptr == 0) return (int)value;
+ if (*endptr == 0) return value;
}
}
}
+/* These values are usually fixed boolean values, but they are permitted to be
+expanded strings.
+
+Arguments:
+ addr address being routed
+ mtype the module type
+ mname the module name
+ dbg_opt debug selectors
+ oname the option name
+ bvalue the router's boolean value
+ svalue the router's string value
+ rvalue where to put the returned value
+
+Returns: OK value placed in rvalue
+ DEFER expansion failed
+*/
+
+int
+exp_bool(address_item *addr,
+ uschar *mtype, uschar *mname, unsigned dbg_opt,
+ uschar *oname, BOOL bvalue,
+ uschar *svalue, BOOL *rvalue)
+{
+uschar *expanded;
+if (svalue == NULL) { *rvalue = bvalue; return OK; }
+
+expanded = expand_string(svalue);
+if (expanded == NULL)
+ {
+ if (expand_string_forcedfail)
+ {
+ DEBUG(dbg_opt) debug_printf("expansion of \"%s\" forced failure\n", oname);
+ *rvalue = bvalue;
+ return OK;
+ }
+ addr->message = string_sprintf("failed to expand \"%s\" in %s %s: %s",
+ oname, mname, mtype, expand_string_message);
+ DEBUG(dbg_opt) debug_printf("%s\n", addr->message);
+ return DEFER;
+ }
+
+DEBUG(dbg_opt) debug_printf("expansion of \"%s\" yields \"%s\"\n", oname,
+ expanded);
+
+if (strcmpic(expanded, US"true") == 0 || strcmpic(expanded, US"yes") == 0)
+ *rvalue = TRUE;
+else if (strcmpic(expanded, US"false") == 0 || strcmpic(expanded, US"no") == 0)
+ *rvalue = FALSE;
+else
+ {
+ addr->message = string_sprintf("\"%s\" is not a valid value for the "
+ "\"%s\" option in the %s %s", expanded, oname, mname, mtype);
+ return DEFER;
+ }
+
+return OK;
+}
+
+
+
+/* Avoid potentially exposing a password in a string about to be logged */
+
+uschar *
+expand_hide_passwords(uschar * s)
+{
+return ( ( Ustrstr(s, "failed to expand") != NULL
+ || Ustrstr(s, "expansion of ") != NULL
+ )
+ && ( Ustrstr(s, "mysql") != NULL
+ || Ustrstr(s, "pgsql") != NULL
+ || Ustrstr(s, "redis") != NULL
+ || Ustrstr(s, "sqlite") != NULL
+ || Ustrstr(s, "ldap:") != NULL
+ || Ustrstr(s, "ldaps:") != NULL
+ || Ustrstr(s, "ldapi:") != NULL
+ || Ustrstr(s, "ldapdn:") != NULL
+ || Ustrstr(s, "ldapm:") != NULL
+ ) )
+ ? US"Temporary internal error" : s;
+}
+
+
+
+
/*************************************************
**************************************************
* Stand-alone test program *
{
int ovector[3*(EXPAND_MAXN+1)];
int n = pcre_exec(re, NULL, subject, Ustrlen(subject), 0, PCRE_EOPT|options,
- ovector, sizeof(ovector)/sizeof(int));
+ ovector, nelem(ovector));
BOOL yield = n >= 0;
if (n == 0) n = EXPAND_MAXN + 1;
if (yield)
if (Ustrspn(argv[i], "abcdefghijklmnopqrtsuvwxyz0123456789-.:/") ==
Ustrlen(argv[i]))
{
- #ifdef LOOKUP_LDAP
+#ifdef LOOKUP_LDAP
eldap_default_servers = argv[i];
- #endif
- #ifdef LOOKUP_MYSQL
+#endif
+#ifdef LOOKUP_MYSQL
mysql_servers = argv[i];
- #endif
- #ifdef LOOKUP_PGSQL
+#endif
+#ifdef LOOKUP_PGSQL
pgsql_servers = argv[i];
- #endif
+#endif
+#ifdef LOOKUP_REDIS
+ redis_servers = argv[i];
+#endif
}
- #ifdef EXIM_PERL
+#ifdef EXIM_PERL
else opt_perl_startup = argv[i];
- #endif
+#endif
}
printf("Testing string expansion: debug_level = %d\n\n", debug_level);
#endif
+/* vi: aw ai sw=2
+*/
/* End of expand.c */
git://git.exim.org / exim.git / blobdiff