* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) The Exim Maintainers 2020 - 2022 */
+/* Copyright (c) The Exim Maintainers 2020 - 2023 */
/* Copyright (c) University of Cambridge 1995 - 2018 */
/* See the file NOTICE for conditions of use and distribution. */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/* Functions for handling string expansion. */
#include "exim.h"
-/* Recursively called function */
+#ifdef MACRO_PREDEF
+# include "macro_predef.h"
+#endif
-static uschar *expand_string_internal(const uschar *, BOOL, const uschar **, BOOL, BOOL, BOOL *);
-static int_eximarith_t expanded_string_integer(const uschar *, BOOL);
+typedef unsigned esi_flags;
+#define ESI_NOFLAGS 0
+#define ESI_BRACE_ENDS BIT(0) /* expansion should stop at } */
+#define ESI_HONOR_DOLLAR BIT(1) /* $ is meaningfull */
+#define ESI_SKIPPING BIT(2) /* value will not be needed */
#ifdef STAND_ALONE
# ifndef SUPPORT_CRYPTEQ
# define SUPPORT_CRYPTEQ
# endif
-#endif
+#endif /*!STAND_ALONE*/
#ifdef LOOKUP_LDAP
# include "lookups/ldap.h"
US"expand",
US"h",
US"hash",
+ US"headerwrap",
US"hex2b64",
US"hexquote",
US"ipv6denorm",
EOP_EXPAND,
EOP_H,
EOP_HASH,
+ EOP_HEADERWRAP,
EOP_HEX2B64,
EOP_HEXQUOTE,
EOP_IPV6DENORM,
int *length;
} alblock;
-static uschar * fn_recipients(void);
typedef uschar * stringptr_fn_t(void);
+static uschar * fn_recipients(void);
+static uschar * fn_recipients_list(void);
static uschar * fn_queue_size(void);
/* This table must be kept in alphabetical order. */
{ "qualify_domain", vtype_stringptr, &qualify_domain_sender },
{ "qualify_recipient", vtype_stringptr, &qualify_domain_recipient },
{ "queue_name", vtype_stringptr, &queue_name },
- { "queue_size", vtype_string_func, &fn_queue_size },
+ { "queue_size", vtype_string_func, (void *) &fn_queue_size },
{ "rcpt_count", vtype_int, &rcpt_count },
{ "rcpt_defer_count", vtype_int, &rcpt_defer_count },
{ "rcpt_fail_count", vtype_int, &rcpt_fail_count },
{ "recipient_verify_failure",vtype_stringptr,&recipient_verify_failure },
{ "recipients", vtype_string_func, (void *) &fn_recipients },
{ "recipients_count", vtype_int, &recipients_count },
+ { "recipients_list", vtype_string_func, (void *) &fn_recipients_list },
+ { "regex_cachesize", vtype_int, ®ex_cachesize },/* undocumented; devel observability */
#ifdef WITH_CONTENT_SCAN
{ "regex_match_string", vtype_stringptr, ®ex_match_string },
#endif
{ "sender_fullhost", vtype_stringptr, &sender_fullhost },
{ "sender_helo_dnssec", vtype_bool, &sender_helo_dnssec },
{ "sender_helo_name", vtype_stringptr, &sender_helo_name },
+ { "sender_helo_verified",vtype_string_func, (void *) &sender_helo_verified_boolstr },
{ "sender_host_address", vtype_stringptr, &sender_host_address },
{ "sender_host_authenticated",vtype_stringptr, &sender_host_authenticated },
{ "sender_host_dnssec", vtype_bool, &sender_host_dnssec },
{ "warnmsg_recipients", vtype_stringptr, &warnmsg_recipients }
};
-static int var_table_size = nelem(var_table);
+#ifdef MACRO_PREDEF
+
+/* dummies */
+uschar * fn_arc_domains(void) {return NULL;}
+uschar * fn_hdrs_added(void) {return NULL;}
+uschar * fn_queue_size(void) {return NULL;}
+uschar * fn_recipients(void) {return NULL;}
+uschar * fn_recipients_list(void) {return NULL;}
+uschar * sender_helo_verified_boolstr(void) {return NULL;}
+uschar * smtp_cmd_hist(void) {return NULL;}
+
+
+
+static void
+expansion_items(void)
+{
+uschar buf[64];
+for (int i = 0; i < nelem(item_table); i++)
+ {
+ spf(buf, sizeof(buf), CUS"_EXP_ITEM_%T", item_table[i]);
+ builtin_macro_create(buf);
+ }
+}
+static void
+expansion_operators(void)
+{
+uschar buf[64];
+for (int i = 0; i < nelem(op_table_underscore); i++)
+ {
+ spf(buf, sizeof(buf), CUS"_EXP_OP_%T", op_table_underscore[i]);
+ builtin_macro_create(buf);
+ }
+for (int i = 0; i < nelem(op_table_main); i++)
+ {
+ spf(buf, sizeof(buf), CUS"_EXP_OP_%T", op_table_main[i]);
+ builtin_macro_create(buf);
+ }
+}
+static void
+expansion_conditions(void)
+{
+uschar buf[64];
+for (int i = 0; i < nelem(cond_table); i++)
+ {
+ spf(buf, sizeof(buf), CUS"_EXP_COND_%T", cond_table[i]);
+ builtin_macro_create(buf);
+ }
+}
+static void
+expansion_variables(void)
+{
+uschar buf[64];
+for (int i = 0; i < nelem(var_table); i++)
+ {
+ spf(buf, sizeof(buf), CUS"_EXP_VAR_%T", var_table[i].name);
+ builtin_macro_create(buf);
+ }
+}
+
+void
+expansions(void)
+{
+expansion_items();
+expansion_operators();
+expansion_conditions();
+expansion_variables();
+}
+
+#else /*!MACRO_PREDEF*/
+
static uschar var_buffer[256];
static BOOL malformed_header;
#define FH_WANT_RAW BIT(1)
#define FH_WANT_LIST BIT(2)
+/* Recursively called function */
+static uschar *expand_string_internal(const uschar *, esi_flags, const uschar **, BOOL *, BOOL *);
+static int_eximarith_t expanded_string_integer(const uschar *, BOOL);
+
/*************************************************
* Tables for UTF-8 support *
find_var_ent(uschar * name)
{
int first = 0;
-int last = var_table_size;
+int last = nelem(var_table);
while (last > first)
{
*/
static uschar *
-find_header(uschar *name, int *newsize, unsigned flags, const uschar *charset)
+find_header(uschar * name, int * newsize, unsigned flags, const uschar * charset)
{
BOOL found = !name;
int len = name ? Ustrlen(name) : 0;
BOOL comma = FALSE;
gstring * g = NULL;
+uschar * rawhdr;
for (header_line * h = header_list; h; h = h->next)
if (h->type != htype_old && h->text) /* NULL => Received: placeholder */
/* That's all we do for raw header expansion. */
*newsize = g->size;
+rawhdr = string_from_gstring(g);
if (flags & FH_WANT_RAW)
- return string_from_gstring(g);
+ return rawhdr;
/* Otherwise do RFC 2047 decoding, translating the charset if requested.
The rfc2047_decode2() function can return an error with decoded data if the
else
{
- uschar * error, * decoded = rfc2047_decode2(string_from_gstring(g),
+ uschar * error, * decoded = rfc2047_decode2(rawhdr,
check_rfc2047_length, charset, '?', NULL, newsize, &error);
if (error)
DEBUG(D_any) debug_printf("*** error in RFC 2047 decoding: %s\n"
- " input was: %s\n", error, g->s);
- return decoded ? decoded : string_from_gstring(g);
+ " input was: %s\n", error, rawhdr);
+ return decoded ? decoded : rawhdr;
}
}
*************************************************/
/* 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. */
+generated from a system filter, but not elsewhere. Note that this does
+not check for comman in the elements, and uses comma-space as seperator -
+so cannot be used as an exim list as-is. */
static uschar *
fn_recipients(void)
s = recipients_list[i].address;
g = string_append2_listele_n(g, US", ", s, Ustrlen(s));
}
-return g ? g->s : NULL;
+gstring_release_unused(g);
+return string_from_gstring(g);
+}
+
+/* Similar, but as a properly-quoted exim list */
+
+
+static uschar *
+fn_recipients_list(void)
+{
+gstring * g = NULL;
+
+if (!f.enable_dollar_recipients) return NULL;
+
+for (int i = 0; i < recipients_count; i++)
+ g = string_append_listele(g, ':', recipients_list[i].address);
+gstring_release_unused(g);
+return string_from_gstring(g);
}
int fd;
ssize_t len;
const uschar * where;
-#ifndef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
uschar * sname;
-#endif
if ((fd = socket(AF_UNIX, SOCK_DGRAM, 0)) < 0)
{
return NULL;
}
-#ifdef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
-sa_un.sun_path[0] = 0; /* Abstract local socket addr - Linux-specific? */
-len = offsetof(struct sockaddr_un, sun_path) + 1
- + snprintf(sa_un.sun_path+1, sizeof(sa_un.sun_path)-1, "exim_%d", getpid());
-#else
-sname = string_sprintf("%s/p_%d", spool_directory, getpid());
-len = offsetof(struct sockaddr_un, sun_path)
- + snprintf(sa_un.sun_path, sizeof(sa_un.sun_path), "%s", sname);
-#endif
+len = daemon_client_sockname(&sa_un, &sname);
-if (bind(fd, (const struct sockaddr *)&sa_un, len) < 0)
+if (bind(fd, (const struct sockaddr *)&sa_un, (socklen_t)len) < 0)
{ where = US"bind"; goto bad; }
#ifdef notdef
sa_un.sun_path + (*sa_un.sun_path ? 0 : 1));
#endif
-#ifdef EXIM_HAVE_ABSTRACT_UNIX_SOCKETS
-sa_un.sun_path[0] = 0; /* Abstract local socket addr - Linux-specific? */
-len = offsetof(struct sockaddr_un, sun_path) + 1
- + snprintf(sa_un.sun_path+1, sizeof(sa_un.sun_path)-1, "%s",
- expand_string(notifier_socket));
-#else
-len = offsetof(struct sockaddr_un, sun_path)
- + snprintf(sa_un.sun_path, sizeof(sa_un.sun_path), "%s",
- expand_string(notifier_socket));
-#endif
-
+len = daemon_notifier_sockname(&sa_un);
if (connect(fd, (const struct sockaddr *)&sa_un, len) < 0)
{ where = US"connect"; goto bad2; }
return node ? node->data.ptr : strict_acl_vars ? NULL : US"";
}
-/* Handle $auth<n> variables. */
+/* Handle $auth<n>, $regex<n> variables. */
if (Ustrncmp(name, "auth", 4) == 0)
{
if (!*endptr && n != 0 && n <= AUTH_VARS)
return auth_vars[n-1] ? auth_vars[n-1] : US"";
}
+#ifdef WITH_CONTENT_SCAN
else if (Ustrncmp(name, "regex", 5) == 0)
{
uschar *endptr;
if (!*endptr && n != 0 && n <= REGEX_VARS)
return regex_vars[n-1] ? regex_vars[n-1] : US"";
}
+#endif
/* For all other variables, search the table */
if (!*ss && deliver_datafile >= 0) /* Read body when needed */
{
uschar * body;
- off_t start_offset = SPOOL_DATA_START_OFFSET;
+ off_t start_offset_o = spool_data_start_offset(message_id);
+ off_t start_offset = start_offset_o;
int len = message_body_visible;
if (len > message_size) len = message_size;
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 (start_offset < start_offset_o)
+ start_offset = start_offset_o;
}
}
if (lseek(deliver_datafile, start_offset, SEEK_SET) < 0)
case vtype_string_func:
{
stringptr_fn_t * fn = (stringptr_fn_t *) val;
- uschar* s = fn();
+ uschar * s = fn();
return s ? s : US"";
}
n maximum number of substrings
m minimum required
sptr points to current string pointer
- skipping the skipping flag
+ flags
+ 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.
+ the store
+ textonly_p if not NULL, pointer to bitmask of which subs were text-only
+ (did not change when expended)
-Returns: 0 OK; string pointer updated
+Returns: -1 OK; string pointer updated, but in "skipping" mode
+ 0 OK; string pointer updated
1 curly bracketing error (too few arguments)
2 too many arguments (only if check_end is set); message set
3 other error (expansion failure)
*/
static int
-read_subs(uschar **sub, int n, int m, const uschar **sptr, BOOL skipping,
- BOOL check_end, uschar *name, BOOL *resetok)
+read_subs(uschar ** sub, int n, int m, const uschar ** sptr, esi_flags flags,
+ BOOL check_end, uschar * name, BOOL * resetok, unsigned * textonly_p)
{
-const uschar *s = *sptr;
+const uschar * s = *sptr;
+unsigned textonly_l = 0;
Uskip_whitespace(&s);
for (int i = 0; i < n; i++)
{
+ BOOL textonly;
if (*s != '{')
{
if (i < m)
sub[i] = NULL;
break;
}
- if (!(sub[i] = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, resetok)))
+ if (!(sub[i] = expand_string_internal(s+1,
+ ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | flags & ESI_SKIPPING, &s, resetok,
+ textonly_p ? &textonly : NULL)))
return 3;
if (*s++ != '}') return 1;
+ if (textonly_p && textonly) textonly_l |= BIT(i);
Uskip_whitespace(&s);
- }
+ } /*{*/
if (check_end && *s++ != '}')
{
if (s[-1] == '{')
return 1;
}
+if (textonly_p) *textonly_p = textonly_l;
*sptr = s;
-return 0;
+return flags & ESI_SKIPPING ? -1 : 0;
}
json_nextinlist(const uschar ** list)
{
unsigned array_depth = 0, object_depth = 0;
+BOOL quoted = FALSE;
const uschar * s = *list, * item;
skip_whitespace(&s);
for (item = s;
- *s && (*s != ',' || array_depth != 0 || object_depth != 0);
+ *s && (*s != ',' || array_depth != 0 || object_depth != 0 || quoted);
s++)
- switch (*s)
+ if (!quoted) switch (*s)
{
case '[': array_depth++; break;
case ']': array_depth--; break;
case '{': object_depth++; break;
case '}': object_depth--; break;
+ case '"': quoted = TRUE;
+ }
+ else switch(*s)
+ {
+ case '\\': s++; break; /* backslash protects one char */
+ case '"': quoted = FALSE; break;
}
*list = *s ? s+1 : s;
if (item == s) return NULL;
*/
static const uschar *
-eval_condition(const uschar *s, BOOL *resetok, BOOL *yield)
+eval_condition(const uschar * s, BOOL * resetok, BOOL * yield)
{
BOOL testfor = TRUE;
BOOL tempcond, combined_cond;
-BOOL *subcondptr;
+BOOL * subcondptr;
BOOL sub2_honour_dollar = TRUE;
BOOL is_forany, is_json, is_jsons;
int rc, cond_type;
struct stat statbuf;
uschar * opname;
uschar name[256];
-const uschar *sub[10];
+const uschar * sub[10];
+unsigned sub_textonly = 0;
for (;;)
if (Uskip_whitespace(&s) == '!') { testfor = !testfor; s++; } else break;
if (Uskip_whitespace(&s) != '{') goto COND_FAILED_CURLY_START; /* }-for-text-editors */
- sub[0] = expand_string_internal(s+1, TRUE, &s, yield == NULL, TRUE, resetok);
- if (!sub[0]) return NULL;
+ {
+ BOOL textonly;
+ sub[0] = expand_string_internal(s+1,
+ ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | (yield ? ESI_NOFLAGS : ESI_SKIPPING),
+ &s, resetok, &textonly);
+ if (!sub[0]) return NULL;
+ if (textonly) sub_textonly |= BIT(0);
+ }
/* {-for-text-editors */
if (*s++ != '}') goto COND_FAILED_CURLY_END;
case ECOND_ISIP:
case ECOND_ISIP4:
case ECOND_ISIP6:
- rc = string_is_ip_address(sub[0], NULL);
- *yield = ((cond_type == ECOND_ISIP)? (rc != 0) :
- (cond_type == ECOND_ISIP4)? (rc == 4) : (rc == 6)) == testfor;
+ {
+ const uschar *errp;
+ const uschar **errpp;
+ DEBUG(D_expand) errpp = &errp; else errpp = 0;
+ if (0 == (rc = string_is_ip_addressX(sub[0], NULL, errpp)))
+ DEBUG(D_expand) debug_printf("failed: %s\n", errp);
+
+ *yield = ( cond_type == ECOND_ISIP ? rc != 0 :
+ cond_type == ECOND_ISIP4 ? rc == 4 : rc == 6) == testfor;
+ }
+
break;
/* Various authentication tests - all optionally compiled */
Uskip_whitespace(&s);
if (*s++ != '{') goto COND_FAILED_CURLY_START; /*}*/
- switch(read_subs(sub, nelem(sub), 1,
- &s, yield == NULL, TRUE, name, resetok))
+ switch(read_subs(sub, nelem(sub), 1, &s,
+ yield ? ESI_NOFLAGS : ESI_SKIPPING, TRUE, name, resetok, NULL))
{
case 1: expand_string_message = US"too few arguments or bracketing "
"error for acl";
uschar *sub[4];
Uskip_whitespace(&s);
if (*s++ != '{') goto COND_FAILED_CURLY_START; /* }-for-text-editors */
- switch(read_subs(sub, nelem(sub), 2, &s, yield == NULL, TRUE, name,
- resetok))
+ switch(read_subs(sub, nelem(sub), 2, &s,
+ yield ? ESI_NOFLAGS : ESI_SKIPPING, TRUE, name, resetok, NULL))
{
case 1: expand_string_message = US"too few arguments or bracketing "
"error for saslauthd";
for (int i = 0; i < 2; i++)
{
+ BOOL textonly;
/* Sometimes, we don't expand substrings; too many insecure configurations
created using match_address{}{} and friends, where the second param
includes information from untrustworthy sources. */
- BOOL honour_dollar = TRUE;
- if ((i > 0) && !sub2_honour_dollar)
- honour_dollar = FALSE;
+ /*XXX is this moot given taint-tracking? */
+
+ esi_flags flags = ESI_BRACE_ENDS;
+
+ if (!(i > 0 && !sub2_honour_dollar)) flags |= ESI_HONOR_DOLLAR;
+ if (!yield) flags |= ESI_SKIPPING;
if (Uskip_whitespace(&s) != '{')
{
"after \"%s\"", opname);
return NULL;
}
- if (!(sub[i] = expand_string_internal(s+1, TRUE, &s, yield == NULL,
- honour_dollar, resetok)))
+ if (!(sub[i] = expand_string_internal(s+1, flags, &s, resetok, &textonly)))
return NULL;
+ if (textonly) sub_textonly |= BIT(i);
DEBUG(D_expand) if (i == 1 && !sub2_honour_dollar && Ustrchr(sub[1], '$'))
debug_printf_indent("WARNING: the second arg is NOT expanded,"
" for security reasons\n");
case ECOND_MATCH: /* Regular expression match */
{
- const pcre2_code * re;
- PCRE2_SIZE offset;
- int err;
-
- if (!(re = pcre2_compile((PCRE2_SPTR)sub[1], PCRE2_ZERO_TERMINATED,
- PCRE_COPT, &err, &offset, pcre_cmp_ctx)))
- {
- uschar errbuf[128];
- pcre2_get_error_message(err, errbuf, sizeof(errbuf));
- expand_string_message = string_sprintf("regular expression error in "
- "\"%s\": %s at offset %ld", sub[1], errbuf, (long)offset);
+ const pcre2_code * re = regex_compile(sub[1],
+ sub_textonly & BIT(1) ? MCS_CACHEABLE : MCS_NOFLAGS,
+ &expand_string_message, pcre_gen_cmp_ctx);
+ if (!re)
return NULL;
- }
tempcond = regex_match_and_setup(re, sub[0], 0, -1);
break;
Uskip_whitespace(&s);
if (*s++ != '{') goto COND_FAILED_CURLY_START; /* }-for-text-editors */
- if (!(sub[0] = expand_string_internal(s, TRUE, &s, yield == NULL, TRUE, resetok)))
+ if (!(sub[0] = expand_string_internal(s,
+ ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | (yield ? ESI_NOFLAGS : ESI_SKIPPING),
+ &s, resetok, NULL)))
return NULL;
/* {-for-text-editors */
if (*s++ != '}') goto COND_FAILED_CURLY_END;
if (Uskip_whitespace(&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, resetok))
+ switch(read_subs(sub_arg, 1, 1, &s,
+ yield ? ESI_NOFLAGS : ESI_SKIPPING, FALSE, ourname, resetok, NULL))
{
case 1: expand_string_message = string_sprintf(
"too few arguments or bracketing error for %s",
uschar cksum[4];
BOOL boolvalue = FALSE;
- switch(read_subs(sub, 2, 2, CUSS &s, yield == NULL, FALSE, name, resetok))
+ switch(read_subs(sub, 2, 2, CUSS &s,
+ yield ? ESI_NOFLAGS : ESI_SKIPPING, FALSE, name, resetok, NULL))
{
case 1: expand_string_message = US"too few arguments or bracketing "
"error for inbound_srs";
/* Match the given local_part against the SRS-encoded pattern */
- re = regex_must_compile(US"^(?i)SRS0=([^=]+)=([A-Z2-7]+)=([^=]*)=(.*)$",
- TRUE, FALSE);
+ re = regex_must_compile(US"^(?i)SRS0=([^=]+)=([A-Z2-7]{2})=([^=]*)=(.*)$",
+ MCS_CASELESS | MCS_CACHEABLE, FALSE);
md = pcre2_match_data_create(4+1, pcre_gen_ctx);
if (pcre2_match(re, sub[0], PCRE2_ZERO_TERMINATED, 0, PCRE_EOPT,
- md, pcre_mtc_ctx) < 0)
+ md, pcre_gen_mtc_ctx) < 0)
{
DEBUG(D_expand) debug_printf("no match for SRS'd local-part pattern\n");
goto srs_result;
/* If a zero-length secret was given, we're done. Otherwise carry on
and validate the given SRS local_part againt our secret. */
- if (!*sub[1])
+ if (*sub[1])
{
- boolvalue = TRUE;
- goto srs_result;
- }
+ /* check the timestamp */
+ {
+ struct timeval now;
+ uschar * ss = sub[0] + ovec[4]; /* substring 2, the timestamp */
+ long d;
+ int n;
- /* check the timestamp */
- {
- struct timeval now;
- uschar * ss = sub[0] + ovec[4]; /* substring 2, the timestamp */
- long d;
- int n;
+ gettimeofday(&now, NULL);
+ now.tv_sec /= 86400; /* days since epoch */
- gettimeofday(&now, NULL);
- now.tv_sec /= 86400; /* days since epoch */
+ /* Decode substring 2 from base32 to a number */
- /* Decode substring 2 from base32 to a number */
+ for (d = 0, n = ovec[5]-ovec[4]; n; n--)
+ {
+ uschar * t = Ustrchr(base32_chars, *ss++);
+ d = d * 32 + (t - base32_chars);
+ }
- for (d = 0, n = ovec[5]-ovec[4]; n; n--)
- {
- uschar * t = Ustrchr(base32_chars, *ss++);
- d = d * 32 + (t - base32_chars);
+ if (((now.tv_sec - d) & 0x3ff) > 10) /* days since SRS generated */
+ {
+ DEBUG(D_expand) debug_printf("SRS too old\n");
+ goto srs_result;
+ }
}
- if (((now.tv_sec - d) & 0x3ff) > 10) /* days since SRS generated */
+ /* check length of substring 1, the offered checksum */
+
+ if (ovec[3]-ovec[2] != 4)
{
- DEBUG(D_expand) debug_printf("SRS too old\n");
+ DEBUG(D_expand) debug_printf("SRS checksum wrong size\n");
goto srs_result;
}
- }
-
- /* check length of substring 1, the offered checksum */
-
- if (ovec[3]-ovec[2] != 4)
- {
- DEBUG(D_expand) debug_printf("SRS checksum wrong size\n");
- goto srs_result;
- }
- /* Hash the address with our secret, and compare that computed checksum
- with the one extracted from the arg */
+ /* Hash the address with our secret, and compare that computed checksum
+ with the one extracted from the arg */
- hmac_md5(sub[1], srs_recipient, cksum, sizeof(cksum));
- if (Ustrncmp(cksum, sub[0] + ovec[2], 4) != 0)
- {
- DEBUG(D_expand) debug_printf("SRS checksum mismatch\n");
- goto srs_result;
+ hmac_md5(sub[1], srs_recipient, cksum, sizeof(cksum));
+ if (Ustrncmp(cksum, sub[0] + ovec[2], 4) != 0)
+ {
+ DEBUG(D_expand) debug_printf("SRS checksum mismatch\n");
+ goto srs_result;
+ }
}
boolvalue = TRUE;
srs_result:
+ /* pcre2_match_data_free(md); gen ctx needs no free */
if (yield) *yield = (boolvalue == testfor);
return s;
}
needed - this avoids unnecessary nested lookups.
Arguments:
- skipping TRUE if we were skipping when this item was reached
+ flags
+ skipping TRUE if we were skipping when this item was reached
yes TRUE if the first string is to be used, else use the second
save_lookup a value to put back into lookup_value before the 2nd expansion
sptr points to the input string pointer
*/
static int
-process_yesno(BOOL skipping, BOOL yes, uschar *save_lookup, const uschar **sptr,
+process_yesno(esi_flags flags, BOOL yes, uschar *save_lookup, const uschar **sptr,
gstring ** yieldptr, uschar *type, BOOL *resetok)
{
int rc = 0;
uschar *sub1, *sub2;
const uschar * errwhere;
+flags &= ESI_SKIPPING; /* Ignore all buf the skipping flag */
+
/* 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
"true" is substituted. In the fail case, nothing is substituted for all three
{
if (type[0] == 'i')
{
- if (yes && !skipping)
+ if (yes && !(flags & ESI_SKIPPING))
*yieldptr = string_catn(*yieldptr, US"true", 4);
}
else
{
- if (yes && lookup_value && !skipping)
+ if (yes && lookup_value && !(flags & ESI_SKIPPING))
*yieldptr = string_cat(*yieldptr, lookup_value);
lookup_value = save_lookup;
}
if (*s++ != '{')
{
- errwhere = US"'yes' part did not start with '{'";
+ errwhere = US"'yes' part did not start with '{'"; /*}}*/
goto FAILED_CURLY;
}
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, resetok);
+sub1 = expand_string_internal(s,
+ ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | (yes ? ESI_NOFLAGS : ESI_SKIPPING),
+ &s, resetok, NULL);
if (sub1 == NULL && (yes || !f.expand_string_forcedfail)) goto FAILED;
f.expand_string_forcedfail = FALSE;
+ /*{{*/
if (*s++ != '}')
{
errwhere = US"'yes' part did not end with '}'";
set skipping in the nested call if we don't want this string, or if we were
already skipping. */
-if (skip_whitespace(&s) == '{')
+if (skip_whitespace(&s) == '{') /*}*/
{
- sub2 = expand_string_internal(s+1, TRUE, &s, yes || skipping, TRUE, resetok);
- if (sub2 == NULL && (!yes || !f.expand_string_forcedfail)) goto FAILED;
- f.expand_string_forcedfail = FALSE;
+ esi_flags s_flags = ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | flags;
+ if (yes) s_flags |= ESI_SKIPPING;
+ sub2 = expand_string_internal(s+1, s_flags, &s, resetok, NULL);
+ if (!sub2 && (!yes || !f.expand_string_forcedfail)) goto FAILED;
+ f.expand_string_forcedfail = FALSE; /*{*/
if (*s++ != '}')
{
- errwhere = US"'no' part did not start with '{'";
+ errwhere = US"'no' part did not start with '{'"; /*}*/
goto FAILED_CURLY;
}
if (!yes)
*yieldptr = string_cat(*yieldptr, sub2);
}
-
+ /*{{*/
/* If there is no second string, but the word "fail" is present when the use of
the second string is wanted, set a flag indicating it was a forced failure
rather than a syntactic error. Swallow the terminating } in case this is nested
s = US read_name(name, sizeof(name), s, US"_");
if (Ustrcmp(name, "fail") == 0)
{
- if (!yes && !skipping)
+ if (!yes && !(flags & ESI_SKIPPING))
{
- Uskip_whitespace(&s);
+ Uskip_whitespace(&s); /*{{*/
if (*s++ != '}')
{
errwhere = US"did not close with '}' after forcedfail";
/* All we have to do now is to check on the final closing brace. */
-skip_whitespace(&s);
+skip_whitespace(&s); /*{{*/
if (*s++ != '}')
{
errwhere = US"did not close with '}'";
hash_source = string_catn(NULL, key_num, 1);
hash_source = string_catn(hash_source, daystamp, 3);
hash_source = string_cat(hash_source, address);
-(void) string_from_gstring(hash_source);
DEBUG(D_expand)
- debug_printf_indent("prvs: hash source is '%s'\n", hash_source->s);
+ debug_printf_indent("prvs: hash source is '%Y'\n", hash_source);
memset(innerkey, 0x36, 64);
memset(outerkey, 0x5c, 64);
Arguments:
string the string to be expanded
- ket_ends true if expansion is to stop at }
+ flags
+ brace_ends expansion is to stop at }
+ honour_dollar TRUE if $ is to be expanded,
+ FALSE if it's just another character
+ skipping TRUE for recursive calls when the value isn't actually going
+ to be used (to allow for optimisation)
left if not NULL, a pointer to the first character after the
- expansion is placed here (typically used with ket_ends)
- skipping TRUE for recursive calls when the value isn't actually going
- to be used (to allow for optimisation)
- honour_dollar TRUE if $ is to be expanded,
- FALSE if it's just another character
+ expansion is placed here (typically used with brace_ends)
resetok_p if not NULL, pointer to flag - write FALSE if unsafe to reset
the store.
+ textonly_p if not NULL, pointer to flag - write bool for only-met-text
Returns: NULL if expansion fails:
expand_string_forcedfail is set TRUE if failure was forced
*/
static uschar *
-expand_string_internal(const uschar *string, BOOL ket_ends, const uschar **left,
- BOOL skipping, BOOL honour_dollar, BOOL *resetok_p)
+expand_string_internal(const uschar * string, esi_flags flags, const uschar ** left,
+ BOOL *resetok_p, BOOL * textonly_p)
{
rmark reset_point = store_mark();
gstring * yield = string_get(Ustrlen(string) + 64);
const uschar * s = string;
const uschar * save_expand_nstring[EXPAND_MAXN+1];
int save_expand_nlength[EXPAND_MAXN+1];
-BOOL resetok = TRUE, first = TRUE;
+BOOL resetok = TRUE, first = TRUE, textonly = TRUE;
expand_level++;
f.expand_string_forcedfail = FALSE;
DEBUG(D_noutf8)
debug_printf_indent("%c%s: %s\n",
first ? '/' : '|',
- skipping ? "---scanning" : "considering", s);
+ flags & ESI_SKIPPING ? "---scanning" : "considering", s);
else
debug_printf_indent("%s%s: %s\n",
first ? UTF8_DOWN_RIGHT : UTF8_VERT_RIGHT,
- skipping
+ flags & ESI_SKIPPING
? UTF8_HORIZ UTF8_HORIZ UTF8_HORIZ "scanning"
: "considering",
s);
for (s = t; *s ; s++) if (*s == '\\' && s[1] == 'N') break;
DEBUG(D_expand)
- debug_expansion_interim(US"protected", t, (int)(s - t), skipping);
+ debug_expansion_interim(US"protected", t, (int)(s - t), !!(flags & ESI_SKIPPING));
yield = string_catn(yield, t, s - t);
if (*s) s += 2;
}
/* Anything other than $ is just copied verbatim, unless we are
looking for a terminating } character. */
- if (ket_ends && *s == '}') break;
+ if (flags & ESI_BRACE_ENDS && *s == '}') break;
- if (*s != '$' || !honour_dollar)
+ if (*s != '$' || !(flags & ESI_HONOR_DOLLAR))
{
int i = 1; /*{*/
for (const uschar * t = s+1;
*t && *t != '$' && *t != '}' && *t != '\\'; t++) i++;
- DEBUG(D_expand) debug_expansion_interim(US"text", s, i, skipping);
+ DEBUG(D_expand) debug_expansion_interim(US"text", s, i, !!(flags & ESI_SKIPPING));
yield = string_catn(yield, s, i);
s += i;
continue;
}
+ textonly = FALSE;
/* No { after the $ - must be a plain name or a number for string
match variable. There has to be a fudge for variables that are the
/* Variable */
- else if (!(value = find_variable(name, FALSE, skipping, &newsize)))
+ else if (!(value = find_variable(name, FALSE, !!(flags & ESI_SKIPPING), &newsize)))
{
expand_string_message =
string_sprintf("unknown variable name \"%s\"", name);
reset in the middle of the buffer will make it inaccessible. */
len = Ustrlen(value);
+ DEBUG(D_expand) debug_expansion_interim(US"value", value, len, !!(flags & ESI_SKIPPING));
if (!yield && newsize != 0)
{
yield = g;
continue;
}
- if (isdigit(*s))
+ if (isdigit(*s)) /* A $<n> variable */
{
int n;
s = read_cnumber(&n, s);
if (n >= 0 && n <= expand_nmax)
+ {
+ DEBUG(D_expand) debug_expansion_interim(US"value", expand_nstring[n], expand_nlength[n], !!(flags & ESI_SKIPPING));
yield = string_catn(yield, expand_nstring[n], expand_nlength[n]);
+ }
continue;
}
goto EXPAND_FAILED;
}
if (n >= 0 && n <= expand_nmax)
+ {
+ DEBUG(D_expand) debug_expansion_interim(US"value", expand_nstring[n], expand_nlength[n], !!(flags & ESI_SKIPPING));
yield = string_catn(yield, expand_nstring[n], expand_nlength[n]);
+ }
continue;
}
skipping, but "break" otherwise so we get debug output for the item
expansion. */
{
- int start = gstring_length(yield);
+ int expansion_start = gstring_length(yield);
switch(item_type)
{
/* Call an ACL from an expansion. We feed data in via $acl_arg1 - $acl_arg9.
uschar * user_msg;
int rc;
- switch(read_subs(sub, nelem(sub), 1, &s, skipping, TRUE, name,
- &resetok))
+ switch(read_subs(sub, nelem(sub), 1, &s, flags, TRUE, name, &resetok, NULL))
{
+ case -1: continue; /* skipping */
case 1: goto EXPAND_FAILED_CURLY;
case 2:
case 3: goto EXPAND_FAILED;
}
- if (skipping) continue;
resetok = FALSE;
switch(rc = eval_acl(sub, nelem(sub), &user_msg))
{
uschar * sub_arg[1];
- switch(read_subs(sub_arg, nelem(sub_arg), 1, &s, skipping, TRUE, name,
- &resetok))
+ switch(read_subs(sub_arg, nelem(sub_arg), 1, &s, flags, TRUE, name, &resetok, NULL))
{
+ case -1: continue; /* If skipping, we don't actually do anything */
case 1: goto EXPAND_FAILED_CURLY;
case 2:
case 3: goto EXPAND_FAILED;
yield = string_append(yield, 3,
US"Authentication-Results: ", sub_arg[0], US"; none");
- yield->ptr -= 6;
+ yield->ptr -= 6; /* ignore tha ": none" for now */
yield = authres_local(yield, sub_arg[0]);
yield = authres_iprev(yield);
uschar * save_lookup_value = lookup_value;
Uskip_whitespace(&s);
- if (!(next_s = eval_condition(s, &resetok, skipping ? NULL : &cond)))
+ if (!(next_s = eval_condition(s, &resetok, flags & ESI_SKIPPING ? NULL : &cond)))
goto EXPAND_FAILED; /* message already set */
DEBUG(D_expand)
{
- debug_expansion_interim(US"condition", s, (int)(next_s - s), skipping);
+ debug_expansion_interim(US"condition", s, (int)(next_s - s), !!(flags & ESI_SKIPPING));
debug_expansion_interim(US"result",
- cond ? US"true" : US"false", cond ? 4 : 5, skipping);
+ cond ? US"true" : US"false", cond ? 4 : 5, !!(flags & ESI_SKIPPING));
}
s = next_s;
function that is also used by ${lookup} and ${extract} and ${run}. */
switch(process_yesno(
- skipping, /* were previously skipping */
- cond, /* success/failure indicator */
- lookup_value, /* value to reset for string2 */
- &s, /* input pointer */
- &yield, /* output pointer */
- US"if", /* condition type */
+ flags, /* were previously skipping */
+ cond, /* success/failure indicator */
+ lookup_value, /* value to reset for string2 */
+ &s, /* input pointer */
+ &yield, /* output pointer */
+ US"if", /* condition type */
&resetok))
{
case 1: goto EXPAND_FAILED; /* when all is well, the */
uschar *sub_arg[3];
uschar *encoded;
- switch(read_subs(sub_arg, nelem(sub_arg), 1, &s, skipping, TRUE, name,
- &resetok))
+ switch(read_subs(sub_arg, nelem(sub_arg), 1, &s, flags, TRUE, name, &resetok, NULL))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
goto EXPAND_FAILED;
}
- if (skipping) continue;
+ if (flags & ESI_SKIPPING) continue;
if (!(encoded = imap_utf7_encode(sub_arg[0], headers_charset,
sub_arg[1][0], sub_arg[2], &expand_string_message)))
if (Uskip_whitespace(&s) == '{') /*}*/
{
- key = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok);
+ key = expand_string_internal(s+1,
+ ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | flags, &s, &resetok, NULL);
if (!key) goto EXPAND_FAILED; /*{{*/
if (*s++ != '}')
{
expand_string_message = US"missing '{' for lookup file-or-query arg";
goto EXPAND_FAILED_CURLY; /*}}*/
}
- if (!(filename = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok)))
+ if (!(filename = expand_string_internal(s+1,
+ ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | flags, &s, &resetok, NULL)))
goto EXPAND_FAILED;
/*{{*/
if (*s++ != '}')
since new variables will have been set. Note that at the end of this
"lookup" section, the old numeric variables are restored. */
- if (skipping)
+ if (flags & ESI_SKIPPING)
lookup_value = NULL;
else
{
function that is also used by ${if} and ${extract}. */
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 */
- US"lookup", /* condition type */
+ flags, /* were previously skipping */
+ lookup_value != NULL, /* success/failure indicator */
+ save_lookup_value, /* value to reset for string2 */
+ &s, /* input pointer */
+ &yield, /* output pointer */
+ US"lookup", /* condition type */
&resetok))
{
case 1: goto EXPAND_FAILED; /* when all is well, the */
restore_expand_strings(save_expand_nmax, save_expand_nstring,
save_expand_nlength);
- if (skipping) continue;
+ if (flags & ESI_SKIPPING) continue;
break;
}
goto EXPAND_FAILED;
}
- switch(read_subs(sub_arg, EXIM_PERL_MAX_ARGS + 1, 1, &s, skipping, TRUE,
- name, &resetok))
+ switch(read_subs(sub_arg, EXIM_PERL_MAX_ARGS + 1, 1, &s, flags, TRUE,
+ name, &resetok, NULL))
{
+ case -1: continue; /* If skipping, we don't actually do anything */
case 1: goto EXPAND_FAILED_CURLY;
case 2:
case 3: goto EXPAND_FAILED;
}
- /* If skipping, we don't actually do anything */
-
- if (skipping) continue;
-
/* Start the interpreter if necessary */
if (!opt_perl_started)
{
uschar * sub_arg[3], * p, * domain;
- switch(read_subs(sub_arg, 3, 2, &s, skipping, TRUE, name, &resetok))
+ switch(read_subs(sub_arg, 3, 2, &s, flags, TRUE, name, &resetok, NULL))
{
+ case -1: continue; /* If skipping, we don't actually do anything */
case 1: goto EXPAND_FAILED_CURLY;
case 2:
case 3: goto EXPAND_FAILED;
}
- /* If skipping, we don't actually do anything */
- if (skipping) continue;
-
/* sub_arg[0] is the address */
if ( !(domain = Ustrrchr(sub_arg[0],'@'))
|| domain == sub_arg[0] || Ustrlen(domain) == 1)
gstring * g;
const pcre2_code * re;
- /* TF: Ugliness: We want to expand parameter 1 first, then set
- up expansion variables that are used in the expansion of
- parameter 2. So we clone the string for the first
- expansion, where we only expand parameter 1.
-
- PH: Actually, that isn't necessary. The read_subs() function is
- designed to work this way for the ${if and ${lookup expansions. I've
- tidied the code.
- */ /*}}*/
-
/* Reset expansion variables */
prvscheck_result = NULL;
prvscheck_address = NULL;
prvscheck_keynum = NULL;
- switch(read_subs(sub_arg, 1, 1, &s, skipping, FALSE, name, &resetok))
+ switch(read_subs(sub_arg, 1, 1, &s, flags, FALSE, name, &resetok, NULL))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
case 3: goto EXPAND_FAILED;
}
- re = regex_must_compile(US"^prvs\\=([0-9])([0-9]{3})([A-F0-9]{6})\\=(.+)\\@(.+)$",
- TRUE,FALSE);
+ re = regex_must_compile(
+ US"^prvs\\=([0-9])([0-9]{3})([A-F0-9]{6})\\=(.+)\\@(.+)$",
+ MCS_CASELESS | MCS_CACHEABLE, FALSE);
if (regex_match_and_setup(re,sub_arg[0],0,-1))
{
uschar * hash = string_copyn(expand_nstring[3],expand_nlength[3]);
uschar * domain = string_copyn(expand_nstring[5],expand_nlength[5]);
- DEBUG(D_expand) debug_printf_indent("prvscheck localpart: %s\n", local_part);
- DEBUG(D_expand) debug_printf_indent("prvscheck key number: %s\n", key_num);
- DEBUG(D_expand) debug_printf_indent("prvscheck daystamp: %s\n", daystamp);
- DEBUG(D_expand) debug_printf_indent("prvscheck hash: %s\n", hash);
- DEBUG(D_expand) debug_printf_indent("prvscheck domain: %s\n", domain);
+ DEBUG(D_expand)
+ {
+ debug_printf_indent("prvscheck localpart: %s\n", local_part);
+ debug_printf_indent("prvscheck key number: %s\n", key_num);
+ debug_printf_indent("prvscheck daystamp: %s\n", daystamp);
+ debug_printf_indent("prvscheck hash: %s\n", hash);
+ debug_printf_indent("prvscheck domain: %s\n", domain);
+ }
/* Set up expansion variables */
g = string_cat (NULL, local_part);
prvscheck_keynum = string_copy(key_num);
/* Now expand the second argument */
- switch(read_subs(sub_arg, 1, 1, &s, skipping, FALSE, name, &resetok))
+ switch(read_subs(sub_arg, 1, 1, &s, flags, FALSE, name, &resetok, NULL))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
p = prvs_hmac_sha1(prvscheck_address, sub_arg[0], prvscheck_keynum,
daystamp);
-
if (!p)
{
expand_string_message = US"hmac-sha1 conversion failed";
if (iexpire >= inow)
{
prvscheck_result = US"1";
- DEBUG(D_expand) debug_printf_indent("prvscheck: success, $pvrs_result set to 1\n");
+ DEBUG(D_expand) debug_printf_indent("prvscheck: success, $prvscheck_result set to 1\n");
}
else
{
prvscheck_result = NULL;
- DEBUG(D_expand) debug_printf_indent("prvscheck: signature expired, $pvrs_result unset\n");
+ DEBUG(D_expand) debug_printf_indent("prvscheck: signature expired, $prvscheck_result unset\n");
}
}
else
{
prvscheck_result = NULL;
- DEBUG(D_expand) debug_printf_indent("prvscheck: hash failure, $pvrs_result unset\n");
+ DEBUG(D_expand) debug_printf_indent("prvscheck: hash failure, $prvscheck_result unset\n");
}
/* 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, name, &resetok))
+ switch(read_subs(sub_arg, 1, 0, &s, flags, TRUE, name, &resetok, NULL))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
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, name, &resetok))
+ switch(read_subs(sub_arg, 2, 1, &s, flags, TRUE, name, &resetok, NULL))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2:
case 3: goto EXPAND_FAILED;
}
- if (skipping) continue;
+ if (flags & ESI_SKIPPING) continue;
break;
}
goto EXPAND_FAILED;
}
- switch(read_subs(sub_arg, 2, 1, &s, skipping, TRUE, name, &resetok))
+ switch(read_subs(sub_arg, 2, 1, &s, flags, TRUE, name, &resetok, NULL))
{
+ case -1: continue; /* If skipping, we don't actually do anything */
case 1: goto EXPAND_FAILED_CURLY;
case 2:
case 3: goto EXPAND_FAILED;
}
- /* If skipping, we don't actually do anything */
-
- if (skipping) continue;
-
/* Open the file and read it */
if (!(f = Ufopen(sub_arg[0], "rb")))
/* 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, name, &resetok))
+ switch(read_subs(sub_arg, 4, 2, &s, flags, FALSE, name, &resetok, NULL))
{
case 1: goto EXPAND_FAILED_CURLY;
case 2: /* Won't occur: no end check */
/* If skipping, we don't actually do anything. Otherwise, arrange to
connect to either an IP or a Unix socket. */
- if (!skipping)
+ if (!(flags & ESI_SKIPPING))
{
int stype = search_findtype(US"readsock", 8);
gstring * g = NULL;
if (*s == '{') /*}*/
{
- if (!expand_string_internal(s+1, TRUE, &s, TRUE, TRUE, &resetok))
+ if (!expand_string_internal(s+1,
+ ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | ESI_SKIPPING, &s, &resetok, NULL))
goto EXPAND_FAILED; /*{*/
if (*s++ != '}')
{ /*{*/
expand_string_message = US"missing '}' closing readsocket";
goto EXPAND_FAILED_CURLY;
}
- if (skipping) continue;
+ if (flags & ESI_SKIPPING) continue;
break;
/* 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);
- if (!(arg = expand_string_internal(s+1, TRUE, &s, FALSE, TRUE, &resetok)))
+ if (!(arg = expand_string_internal(s+1,
+ ESI_BRACE_ENDS | ESI_HONOR_DOLLAR, &s, &resetok, NULL)))
goto EXPAND_FAILED;
yield = string_cat(yield, arg); /*{*/
if (*s++ != '}')
{
FILE * f;
const uschar * arg, ** argv;
- BOOL late_expand = TRUE;
+ unsigned late_expand = TSUC_EXPAND_ARGS | TSUC_ALLOW_TAINTED_ARGS | TSUC_ALLOW_RECIPIENTS;
- if ((expand_forbid & RDO_RUN) != 0)
+ if (expand_forbid & RDO_RUN)
{
expand_string_message = US"running a command is not permitted";
goto EXPAND_FAILED;
/* Handle options to the "run" */
while (*s == ',')
- {
if (Ustrncmp(++s, "preexpand", 9) == 0)
- { late_expand = FALSE; s += 9; }
+ { late_expand = 0; s += 9; }
else
{
const uschar * t = s;
(int)(t-s), s);
goto EXPAND_FAILED;
}
- }
Uskip_whitespace(&s);
if (*s != '{') /*}*/
if (late_expand) /* this is the default case */
{
- int n = Ustrcspn(s, "}");
- arg = skipping ? NULL : string_copyn(s, n);
+ int n;
+ const uschar * t;
+ /* Locate the end of the args */
+ (void) expand_string_internal(s,
+ ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | ESI_SKIPPING, &t, NULL, NULL);
+ n = t - s;
+ arg = flags & ESI_SKIPPING ? NULL : string_copyn(s, n);
s += n;
}
else
{
- if (!(arg = expand_string_internal(s, TRUE, &s, skipping, TRUE, &resetok)))
+ DEBUG(D_expand)
+ debug_printf_indent("args string for ${run} expand before split\n");
+ if (!(arg = expand_string_internal(s,
+ ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | flags, &s, &resetok, NULL)))
goto EXPAND_FAILED;
Uskip_whitespace(&s);
}
goto EXPAND_FAILED_CURLY;
}
- if (skipping) /* Just pretend it worked when we're skipping */
+ if (flags & ESI_SKIPPING) /* Just pretend it worked when we're skipping */
{
runrc = 0;
lookup_value = NULL;
late_expand, /* expand args if not already done */
0, /* not relevant when... */
NULL, /* no transporting address */
- late_expand, /* allow tainted args, when expand-after-split */
US"${run} expansion", /* for error messages */
&expand_string_message)) /* where to put error message */
goto EXPAND_FAILED;
/* Process the yes/no strings; $value may be useful in both cases */
switch(process_yesno(
- skipping, /* were previously skipping */
- runrc == 0, /* success/failure indicator */
- lookup_value, /* value to reset for string2 */
- &s, /* input pointer */
- &yield, /* output pointer */
- US"run", /* condition type */
+ flags, /* were previously skipping */
+ runrc == 0, /* success/failure indicator */
+ lookup_value, /* value to reset for string2 */
+ &s, /* input pointer */
+ &yield, /* output pointer */
+ 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 */
}
- if (skipping) continue;
+ if (flags & ESI_SKIPPING) continue;
break;
}
int o2m;
uschar * sub[3];
- switch(read_subs(sub, 3, 3, &s, skipping, TRUE, name, &resetok))
+ switch(read_subs(sub, 3, 3, &s, flags, TRUE, name, &resetok, NULL))
{
+ case -1: continue; /* skipping */
case 1: goto EXPAND_FAILED_CURLY;
case 2:
case 3: goto EXPAND_FAILED;
}
- yield = string_cat(yield, sub[0]);
- o2m = Ustrlen(sub[2]) - 1;
-
- if (o2m >= 0) for (; oldptr < yield->ptr; oldptr++)
+ if ( (yield = string_cat(yield, sub[0]))
+ && (o2m = Ustrlen(sub[2]) - 1) >= 0)
+ for (; oldptr < yield->ptr; oldptr++)
{
- uschar *m = Ustrrchr(sub[1], yield->s[oldptr]);
+ uschar * m = Ustrrchr(sub[1], yield->s[oldptr]);
if (m)
{
int o = m - sub[1];
- yield->s[oldptr] = sub[2][(o < o2m)? o : o2m];
+ yield->s[oldptr] = sub[2][o < o2m ? o : o2m];
}
}
- if (skipping) continue;
break;
}
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, &resetok))
+ switch(read_subs(sub, item_type == EITEM_LENGTH ? 2:3, 2, &s, flags,
+ TRUE, name, &resetok, NULL))
{
+ case -1: continue; /* skipping */
case 1: goto EXPAND_FAILED_CURLY;
case 2:
case 3: goto EXPAND_FAILED;
if (!ret)
goto EXPAND_FAILED;
yield = string_catn(yield, ret, len);
- if (skipping) continue;
break;
}
uschar innerkey[MAX_HASHBLOCKLEN];
uschar outerkey[MAX_HASHBLOCKLEN];
- switch (read_subs(sub, 3, 3, &s, skipping, TRUE, name, &resetok))
+ switch (read_subs(sub, 3, 3, &s, flags, TRUE, name, &resetok, NULL))
{
+ case -1: continue; /* skipping */
case 1: goto EXPAND_FAILED_CURLY;
case 2:
case 3: goto EXPAND_FAILED;
}
- if (skipping) continue;
-
if (Ustrcmp(sub[0], "md5") == 0)
{
type = HMAC_MD5;
{
const pcre2_code * re;
int moffset, moffsetextra, slen;
- PCRE2_SIZE roffset;
pcre2_match_data * md;
- int err, emptyopt;
+ int emptyopt;
uschar * subject, * sub[3];
int save_expand_nmax =
save_expand_strings(save_expand_nstring, save_expand_nlength);
+ unsigned sub_textonly = 0;
- switch(read_subs(sub, 3, 3, &s, skipping, TRUE, name, &resetok))
+ switch(read_subs(sub, 3, 3, &s, flags, TRUE, name, &resetok, &sub_textonly))
{
+ case -1: continue; /* skipping */
case 1: goto EXPAND_FAILED_CURLY;
case 2:
case 3: goto EXPAND_FAILED;
}
- /*XXX no handling of skipping? */
/* Compile the regular expression */
- if (!(re = pcre2_compile((PCRE2_SPTR)sub[1], PCRE2_ZERO_TERMINATED,
- PCRE_COPT, &err, &roffset, pcre_cmp_ctx)))
- {
- uschar errbuf[128];
- pcre2_get_error_message(err, errbuf, sizeof(errbuf));
- expand_string_message = string_sprintf("regular expression error in "
- "\"%s\": %s at offset %ld", sub[1], errbuf, (long)roffset);
+ re = regex_compile(sub[1],
+ sub_textonly & BIT(1) ? MCS_CACHEABLE : MCS_NOFLAGS,
+ &expand_string_message, pcre_gen_cmp_ctx);
+ if (!re)
goto EXPAND_FAILED;
- }
+
md = pcre2_match_data_create(EXPAND_MAXN + 1, pcre_gen_ctx);
/* Now run a loop to do the substitutions as often as necessary. It ends
{
PCRE2_SIZE * ovec = pcre2_get_ovector_pointer(md);
int n = pcre2_match(re, (PCRE2_SPTR)subject, slen, moffset + moffsetextra,
- PCRE_EOPT | emptyopt, md, pcre_mtc_ctx);
+ PCRE_EOPT | emptyopt, md, pcre_gen_mtc_ctx);
uschar * insert;
/* No match - if we previously set PCRE_NOTEMPTY after a null match, this
/* All done - restore numerical variables. */
+ /* pcre2_match_data_free(md); gen ctx needs no free */
restore_expand_strings(save_expand_nmax, save_expand_nstring,
save_expand_nlength);
- if (skipping) continue;
break;
}
available (eg. $item) hence cannot decide on numeric vs. keyed.
Read a maximum of 5 arguments (including the yes/no) */
- if (skipping)
+ if (flags & ESI_SKIPPING)
{
for (int j = 5; j > 0 && *s == '{'; j--) /*'}'*/
{
- if (!expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok))
+ if (!expand_string_internal(s+1,
+ ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | flags, &s, &resetok, NULL))
goto EXPAND_FAILED; /*'{'*/
if (*s++ != '}')
{
{
if (Uskip_whitespace(&s) == '{') /*'}'*/
{
- if (!(sub[i] = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok)))
+ if (!(sub[i] = expand_string_internal(s+1,
+ ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | flags, &s, &resetok, NULL)))
goto EXPAND_FAILED; /*'{'*/
if (*s++ != '}')
{
/* Extract either the numbered or the keyed substring into $value. If
skipping, just pretend the extraction failed. */
- if (skipping)
+ if (flags & ESI_SKIPPING)
lookup_value = NULL;
else switch (fmt)
{
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 */
- US"extract", /* condition type */
+ flags, /* were previously skipping */
+ lookup_value != NULL, /* success/failure indicator */
+ save_lookup_value, /* value to reset for string2 */
+ &s, /* input pointer */
+ &yield, /* output pointer */
+ US"extract", /* condition type */
&resetok))
{
case 1: goto EXPAND_FAILED; /* when all is well, the */
restore_expand_strings(save_expand_nmax, save_expand_nstring,
save_expand_nlength);
- if (skipping) continue;
+ if (flags & ESI_SKIPPING) continue;
break;
}
save_expand_strings(save_expand_nstring, save_expand_nlength);
/* Read the field & list arguments */
+ /*XXX Could we use read_subs here (and get better efficiency for skipping)? */
for (int i = 0; i < 2; i++)
{
goto EXPAND_FAILED_CURLY;
}
- sub[i] = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok);
+ sub[i] = expand_string_internal(s+1,
+ ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | flags, &s, &resetok, NULL);
if (!sub[i]) goto EXPAND_FAILED; /*{{*/
if (*s++ != '}')
{
while (len > 0 && isspace(p[len-1])) len--;
p[len] = 0;
- if (!*p && !skipping)
+ if (!*p && !(flags & ESI_SKIPPING))
{
expand_string_message = US"first argument of \"listextract\" must "
"not be empty";
/* Extract the numbered element into $value. If
skipping, just pretend the extraction failed. */
- lookup_value = skipping ? NULL : expand_getlistele(field_number, sub[1]);
+ lookup_value = flags & ESI_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 */
- US"listextract", /* condition type */
+ flags, /* were previously skipping */
+ lookup_value != NULL, /* success/failure indicator */
+ save_lookup_value, /* value to reset for string2 */
+ &s, /* input pointer */
+ &yield, /* output pointer */
+ US"listextract", /* condition type */
&resetok))
{
case 1: goto EXPAND_FAILED; /* when all is well, the */
restore_expand_strings(save_expand_nmax, save_expand_nstring,
save_expand_nlength);
- if (skipping) continue;
+ if (flags & ESI_SKIPPING) continue;
break;
}
case EITEM_LISTQUOTE:
{
uschar * sub[2];
- switch(read_subs(sub, 2, 2, &s, skipping, TRUE, name, &resetok))
+ switch(read_subs(sub, 2, 2, &s, flags, TRUE, name, &resetok, NULL))
{
+ case -1: continue; /* skipping */
case 1: goto EXPAND_FAILED_CURLY;
case 2:
case 3: goto EXPAND_FAILED;
yield = string_catn(yield, sub[1], 1);
}
else yield = string_catn(yield, US" ", 1);
- if (skipping) continue;
break;
}
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);
+ sub[0] = expand_string_internal(s+1,
+ ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | flags, &s, &resetok, NULL);
if (!sub[0]) goto EXPAND_FAILED; /*{{*/
if (*s++ != '}')
{
"be a certificate variable";
goto EXPAND_FAILED;
}
- sub[1] = expand_string_internal(s+1, TRUE, &s, skipping, FALSE, &resetok);
+ sub[1] = expand_string_internal(s+1,
+ ESI_BRACE_ENDS | flags & ESI_SKIPPING, &s, &resetok, NULL);
if (!sub[1]) goto EXPAND_FAILED; /*{{*/
if (*s++ != '}')
{
goto EXPAND_FAILED_CURLY;
}
- if (skipping)
+ if (flags & ESI_SKIPPING)
lookup_value = NULL;
else
{
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 */
- US"certextract", /* condition type */
+ flags, /* were previously skipping */
+ lookup_value != NULL, /* success/failure indicator */
+ save_lookup_value, /* value to reset for string2 */
+ &s, /* input pointer */
+ &yield, /* output pointer */
+ US"certextract", /* condition type */
&resetok))
{
case 1: goto EXPAND_FAILED; /* when all is well, the */
restore_expand_strings(save_expand_nmax, save_expand_nstring,
save_expand_nlength);
- if (skipping) continue;
+ if (flags & ESI_SKIPPING) continue;
break;
}
#endif /*DISABLE_TLS*/
goto EXPAND_FAILED_CURLY; /*}*/
}
- if (!(list = expand_string_internal(s, TRUE, &s, skipping, TRUE, &resetok)))
+ DEBUG(D_expand) debug_printf_indent("%s: evaluate input list list\n", name);
+ if (!(list = expand_string_internal(s,
+ ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | flags, &s, &resetok, NULL)))
goto EXPAND_FAILED; /*{{*/
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);
+ DEBUG(D_expand) debug_printf_indent("reduce: initial result list\n");
+ t = expand_string_internal(s,
+ ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | flags, &s, &resetok, NULL);
if (!t) goto EXPAND_FAILED;
lookup_value = t; /*{{*/
if (*s++ != '}')
condition for real. For EITEM_MAP and EITEM_REDUCE, do the same, using
the normal internal expansion function. */
+ DEBUG(D_expand) debug_printf_indent("%s: find end of conditionn\n", name);
if (item_type != EITEM_FILTER)
- temp = expand_string_internal(s, TRUE, &s, TRUE, TRUE, &resetok);
+ temp = expand_string_internal(s,
+ ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | ESI_SKIPPING, &s, &resetok, NULL);
else
if ((temp = eval_condition(expr, &resetok, NULL))) s = temp;
/* If we are skipping, we can now just move on to the next item. When
processing for real, we perform the iteration. */
- if (skipping) continue;
+ if (flags & ESI_SKIPPING) continue;
while ((iterate_item = string_nextinlist(&list, &sep, NULL, 0)))
{
*outsep = (uschar)sep; /* Separator as a string */
if (item_type == EITEM_FILTER)
{
BOOL condresult;
+ /* the condition could modify $value, as a side-effect */
+ uschar * save_value = lookup_value;
+
if (!eval_condition(expr, &resetok, &condresult))
{
iterate_item = save_iterate_item;
expand_string_message, name);
goto EXPAND_FAILED;
}
+ lookup_value = save_value;
DEBUG(D_expand) debug_printf_indent("%s: condition is %s\n", name,
condresult? "true":"false");
if (condresult)
continue; /* FALSE => skip this item */
}
- /* EITEM_MAP and EITEM_REDUCE */
-
- else
+ else /* EITEM_MAP and EITEM_REDUCE */
{
- uschar * t = expand_string_internal(expr, TRUE, NULL, skipping, TRUE, &resetok);
- temp = t;
- if (!temp)
+ /* the expansion could modify $value, as a side-effect */
+ uschar * t = expand_string_internal(expr,
+ ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | flags, NULL, &resetok, NULL);
+ if (!(temp = t))
{
iterate_item = save_iterate_item;
expand_string_message = string_sprintf("%s inside \"%s\" item",
/* Restore preserved $item */
iterate_item = save_iterate_item;
- if (skipping) continue;
+ if (flags & ESI_SKIPPING) continue;
break;
}
goto EXPAND_FAILED_CURLY; /*}*/
}
- srclist = expand_string_internal(s, TRUE, &s, skipping, TRUE, &resetok);
+ srclist = expand_string_internal(s,
+ ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | flags, &s, &resetok, NULL);
if (!srclist) goto EXPAND_FAILED; /*{{*/
if (*s++ != '}')
{
goto EXPAND_FAILED_CURLY; /*}*/
}
- cmp = expand_string_internal(s, TRUE, &s, skipping, FALSE, &resetok);
+ cmp = expand_string_internal(s,
+ ESI_BRACE_ENDS | flags & ESI_SKIPPING, &s, &resetok, NULL);
if (!cmp) goto EXPAND_FAILED; /*{{*/
if (*s++ != '}')
{
}
xtract = s;
- if (!(tmp = expand_string_internal(s, TRUE, &s, TRUE, TRUE, &resetok)))
+ if (!(tmp = expand_string_internal(s,
+ ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | ESI_SKIPPING, &s, &resetok, NULL)))
goto EXPAND_FAILED;
xtract = string_copyn(xtract, s - xtract);
/*{{*/
goto EXPAND_FAILED;
}
- if (skipping) continue;
+ if (flags & ESI_SKIPPING) continue;
while ((srcitem = string_nextinlist(&srclist, &sep, NULL, 0)))
{
/* extract field for comparisons */
iterate_item = srcitem;
- if ( !(srcfield = expand_string_internal(xtract, FALSE, NULL, FALSE,
- TRUE, &resetok))
+ if ( !(srcfield = expand_string_internal(xtract,
+ ESI_HONOR_DOLLAR, NULL, &resetok, NULL))
|| !*srcfield)
{
expand_string_message = string_sprintf(
goto EXPAND_FAILED;
}
- switch(read_subs(argv, EXPAND_DLFUNC_MAX_ARGS + 2, 2, &s, skipping,
- TRUE, name, &resetok))
+ switch(read_subs(argv, EXPAND_DLFUNC_MAX_ARGS + 2, 2, &s, flags,
+ TRUE, name, &resetok, NULL))
{
+ case -1: continue; /* skipping */
case 1: goto EXPAND_FAILED_CURLY;
case 2:
case 3: goto EXPAND_FAILED;
}
- /* If skipping, we don't actually do anything */
-
- if (skipping) continue;
-
/* Look up the dynamically loaded object handle in the tree. If it isn't
found, dlopen() the file and put the handle in the tree for next time. */
if (Uskip_whitespace(&s) != '{') /*}*/
goto EXPAND_FAILED;
- key = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok);
+ key = expand_string_internal(s+1,
+ ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | flags, &s, &resetok, NULL);
if (!key) goto EXPAND_FAILED; /*{{*/
if (*s++ != '}')
{
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 */
- US"env", /* condition type */
+ flags, /* were previously skipping */
+ lookup_value != NULL, /* success/failure indicator */
+ save_lookup_value, /* value to reset for string2 */
+ &s, /* input pointer */
+ &yield, /* output pointer */
+ 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 */
}
- if (skipping) continue;
+ if (flags & ESI_SKIPPING) continue;
break;
}
gstring * g = NULL;
BOOL quoted = FALSE;
- switch (read_subs(sub, 3, 3, CUSS &s, skipping, TRUE, name, &resetok))
+ switch (read_subs(sub, 3, 3, CUSS &s, flags, TRUE, name, &resetok, NULL))
{
+ case -1: continue; /* skipping */
case 1: goto EXPAND_FAILED_CURLY;
case 2:
case 3: goto EXPAND_FAILED;
}
- if (skipping) continue;
+ if (flags & ESI_SKIPPING) continue;
if (sub[1] && *(sub[1]))
{
{
struct timeval now;
unsigned long i;
- gstring * h = NULL;
gettimeofday(&now, NULL);
- for (unsigned long i = (now.tv_sec / 86400) & 0x3ff; i; i >>= 5)
- h = string_catn(h, &base32_chars[i & 0x1f], 1);
- if (h) while (h->ptr > 0)
- g = string_catn(g, &h->s[--h->ptr], 1);
+ i = (now.tv_sec / 86400) & 0x3ff;
+ g = string_catn(g, &base32_chars[i >> 5], 1);
+ g = string_catn(g, &base32_chars[i & 0x1f], 1);
}
g = string_catn(g, US"=", 1);
it was for good reason */
if (quoted) yield = string_catn(yield, US"\"", 1);
- yield = string_catn(yield, g->s, g->ptr);
+ yield = gstring_append(yield, g);
if (quoted) yield = string_catn(yield, US"\"", 1);
/* @$original_domain */
} /* EITEM_* switch */
/*NOTREACHED*/
- DEBUG(D_expand)
- if (yield && (start > 0 || *s)) /* only if not the sole expansion of the line */
+ DEBUG(D_expand) /* only if not the sole expansion of the line */
+ if (yield && (expansion_start > 0 || *s))
debug_expansion_interim(US"item-res",
- yield->s + start, yield->ptr - start, skipping);
+ yield->s + expansion_start, yield->ptr - expansion_start,
+ !!(flags & ESI_SKIPPING));
continue;
NOT_ITEM: ;
/* 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)
{
#ifndef DISABLE_TLS
if (s[1] == '$')
{
const uschar * s1 = s;
- sub = expand_string_internal(s+2, TRUE, &s1, skipping,
- FALSE, &resetok);
+ sub = expand_string_internal(s+2,
+ ESI_BRACE_ENDS | flags & ESI_SKIPPING, &s1, &resetok, NULL);
if (!sub) goto EXPAND_FAILED; /*{*/
if (*s1 != '}')
{ /*{*/
/*FALLTHROUGH*/
#endif
default:
- sub = expand_string_internal(s+1, TRUE, &s, skipping, TRUE, &resetok);
+ sub = expand_string_internal(s+1,
+ ESI_BRACE_ENDS | ESI_HONOR_DOLLAR | flags, &s, &resetok, NULL);
if (!sub) goto EXPAND_FAILED;
s++;
break;
for the existence of $sender_host_address before trying to mask it. For
other operations, doing them may not fail, but it is a waste of time. */
- if (skipping && c >= 0) continue;
+ if (flags & ESI_SKIPPING && c >= 0) continue;
/* Otherwise, switch on the operator type. After handling go back
to the main loop top. */
{
- int start = yield->ptr;
+ unsigned expansion_start = gstring_length(yield);
switch(c)
{
case EOP_BASE32:
{
- uschar *t;
+ uschar * t;
unsigned long int n = Ustrtoul(sub, &t, 10);
gstring * g = NULL;
- if (*t != 0)
+ if (*t)
{
expand_string_message = string_sprintf("argument for base32 "
"operator is \"%s\", which is not a decimal number", sub);
{
uschar *t;
unsigned long int n = Ustrtoul(sub, &t, 10);
- if (*t != 0)
+ if (*t)
{
expand_string_message = string_sprintf("argument for base62 "
"operator is \"%s\", which is not a decimal number", sub);
goto EXPAND_FAILED;
}
- yield = string_cat(yield, string_base62(n));
+ yield = string_cat(yield, string_base62_32(n)); /*XXX only handles 32b input range. Need variants? */
break;
}
{
uschar *tt = sub;
unsigned long int n = 0;
- while (*tt != 0)
+ while (*tt)
{
uschar *t = Ustrchr(base62_chars, *tt++);
if (!t)
case EOP_EXPAND:
{
- uschar *expanded = expand_string_internal(sub, FALSE, NULL, skipping, TRUE, &resetok);
+ uschar *expanded = expand_string_internal(sub,
+ ESI_HONOR_DOLLAR | flags & ESI_SKIPPING, NULL, &resetok, NULL);
if (!expanded)
{
expand_string_message =
goto EXPAND_FAILED;
#endif
+ /* Line-wrap a string as if it is a header line */
+
+ case EOP_HEADERWRAP:
+ {
+ unsigned col = 80, lim = 998;
+ uschar * s;
+
+ if (arg)
+ {
+ const uschar * list = arg;
+ int sep = '_';
+ if ((s = string_nextinlist(&list, &sep, NULL, 0)))
+ {
+ col = atoi(CS s);
+ if ((s = string_nextinlist(&list, &sep, NULL, 0)))
+ lim = atoi(CS s);
+ }
+ }
+ if ((s = wrap_header(sub, col, lim, US"\t", 8)))
+ yield = string_cat(yield, s);
+ }
+ break;
+
/* Convert hex encoding to base64 encoding */
case EOP_HEX2B64:
case EOP_UTF8CLEAN:
{
- int seq_len = 0, index = 0;
- int bytes_left = 0;
- long codepoint = -1;
- int complete;
+ int seq_len = 0, index = 0, bytes_left = 0, complete;
+ u_long codepoint = (u_long)-1;
uschar seq_buff[4]; /* accumulate utf-8 here */
/* Manually track tainting, as we deal in individual chars below */
- if (!yield->s || !yield->ptr)
+ if (!yield)
+ yield = string_get_tainted(Ustrlen(sub), sub);
+ else if (!yield->s || !yield->ptr)
+ {
yield->s = store_get(yield->size = Ustrlen(sub), sub);
+ gstring_reset(yield);
+ }
else if (is_incompatible(yield->s, sub))
gstring_rebuffer(yield, sub);
if (--bytes_left == 0) /* codepoint complete */
if(codepoint > 0x10FFFF) /* is it too large? */
complete = -1; /* error (RFC3629 limit) */
+ else if ( (codepoint & 0x1FF800 ) == 0xD800 ) /* surrogate */
+ /* A UTF-16 surrogate (which should be one of a pair that
+ encode a Unicode codepoint that is outside the Basic
+ Multilingual Plane). Error, not UTF8.
+ RFC2279.2 is slightly unclear on this, but
+ https://unicodebook.readthedocs.io/issues.html#strict-utf8-decoder
+ says "Surrogates characters are also invalid in UTF-8:
+ characters in U+D800—U+DFFF have to be rejected." */
+ complete = -1;
else
{ /* finished; output utf-8 sequence */
yield = string_catn(yield, seq_buff, seq_len);
}
else /* no bytes left: new sequence */
{
- if(!(c & 0x80)) /* 1-byte sequence, US-ASCII, keep it */
+ if (!(c & 0x80)) /* 1-byte sequence, US-ASCII, keep it */
{
yield = string_catn(yield, &c, 1);
continue;
}
- if((c & 0xe0) == 0xc0) /* 2-byte sequence */
- {
- if(c == 0xc0 || c == 0xc1) /* 0xc0 and 0xc1 are illegal */
+ 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;
+ bytes_left = 1;
+ codepoint = c & 0x1f;
}
- }
- else if((c & 0xf0) == 0xe0) /* 3-byte sequence */
+ else if ((c & 0xf0) == 0xe0) /* 3-byte sequence */
{
bytes_left = 2;
codepoint = c & 0x0f;
}
- else if((c & 0xf8) == 0xf0) /* 4-byte sequence */
+ else if ((c & 0xf8) == 0xf0) /* 4-byte sequence */
{
bytes_left = 3;
codepoint = c & 0x07;
goto EXPAND_FAILED;
}
yield = string_cat(yield, s);
- DEBUG(D_expand) debug_printf_indent("yield: '%s'\n", yield->s);
+ DEBUG(D_expand) debug_printf_indent("yield: '%Y'\n", yield);
break;
}
case EOP_BASE64D:
{
uschar * s;
- int len = b64decode(sub, &s);
+ int len = b64decode(sub, &s, sub);
if (len < 0)
{
expand_string_message = string_sprintf("string \"%s\" is not "
DEBUG(D_expand)
{
- const uschar * s = yield->s + start;
- int i = yield->ptr - start;
+ const uschar * res = string_from_gstring(yield);
+ const uschar * s = res + expansion_start;
+ int i = gstring_length(yield) - expansion_start;
BOOL tainted = is_tainted(s);
DEBUG(D_noutf8)
debug_printf_indent("|-----op-res: %.*s\n", i, s);
if (tainted)
{
- debug_printf_indent("%s \\__", skipping ? "| " : " ");
- debug_print_taint(yield->s);
+ debug_printf_indent("%s \\__", flags & ESI_SKIPPING ? "| " : " ");
+ debug_print_taint(res);
}
}
else
if (tainted)
{
debug_printf_indent("%s",
- skipping
+ flags & ESI_SKIPPING
? UTF8_VERT " " : " " UTF8_UP_RIGHT UTF8_HORIZ UTF8_HORIZ);
- debug_print_taint(yield->s);
+ debug_print_taint(res);
}
}
}
reset_point = store_mark();
g = store_get(sizeof(gstring), GET_UNTAINTED); /* alloc _before_ calling find_variable() */
}
- if (!(value = find_variable(name, FALSE, skipping, &newsize)))
+ if (!(value = find_variable(name, FALSE, !!(flags & ESI_SKIPPING), &newsize)))
{
expand_string_message =
string_sprintf("unknown variable in \"${%s}\"", name);
goto EXPAND_FAILED;
}
-/* If we hit the end of the string when ket_ends is set, there is a missing
+/* If we hit the end of the string when brace_ends is set, there is a missing
terminating brace. */
-if (ket_ends && !*s)
- {
+if (flags & ESI_BRACE_ENDS && !*s)
+ { /*{{*/
expand_string_message = malformed_header
? US"missing } at end of string - could be header name not terminated by colon"
: US"missing } at end of string";
added to the string. If so, set up an empty string. Add a terminating zero. If
left != NULL, return a pointer to the terminator. */
-if (!yield)
- yield = string_get(1);
-(void) string_from_gstring(yield);
-if (left) *left = s;
+ {
+ uschar * res;
-/* Any stacking store that was used above the final string is no longer needed.
-In many cases the final string will be the first one that was got and so there
-will be optimal store usage. */
+ if (!yield)
+ yield = string_get(1);
+ res = string_from_gstring(yield);
+ if (left) *left = s;
-if (resetok) gstring_release_unused(yield);
-else if (resetok_p) *resetok_p = FALSE;
+ /* Any stacking store that was used above the final string is no longer needed.
+ In many cases the final string will be the first one that was got and so there
+ will be optimal store usage. */
-DEBUG(D_expand)
- {
- BOOL tainted = is_tainted(yield->s);
- DEBUG(D_noutf8)
+ if (resetok) gstring_release_unused(yield);
+ else if (resetok_p) *resetok_p = FALSE;
+
+ DEBUG(D_expand)
{
- debug_printf_indent("|--expanding: %.*s\n", (int)(s - string), string);
- debug_printf_indent("%sresult: %s\n",
- skipping ? "|-----" : "\\_____", yield->s);
- if (tainted)
+ BOOL tainted = is_tainted(res);
+ DEBUG(D_noutf8)
{
- debug_printf_indent("%s \\__", skipping ? "| " : " ");
- debug_print_taint(yield->s);
+ debug_printf_indent("|--expanding: %.*s\n", (int)(s - string), string);
+ debug_printf_indent("%sresult: %s\n",
+ flags & ESI_SKIPPING ? "|-----" : "\\_____", res);
+ if (tainted)
+ {
+ debug_printf_indent("%s \\__", flags & ESI_SKIPPING ? "| " : " ");
+ debug_print_taint(res);
+ }
+ if (flags & ESI_SKIPPING)
+ debug_printf_indent("\\___skipping: result is not used\n");
}
- if (skipping)
- debug_printf_indent("\\___skipping: result is not used\n");
- }
- else
- {
- debug_printf_indent(UTF8_VERT_RIGHT UTF8_HORIZ UTF8_HORIZ
- "expanding: %.*s\n",
- (int)(s - string), string);
- debug_printf_indent("%s" UTF8_HORIZ UTF8_HORIZ UTF8_HORIZ UTF8_HORIZ UTF8_HORIZ
- "result: %s\n",
- skipping ? UTF8_VERT_RIGHT : UTF8_UP_RIGHT,
- yield->s);
- if (tainted)
+ else
{
- debug_printf_indent("%s",
- skipping
- ? UTF8_VERT " " : " " UTF8_UP_RIGHT UTF8_HORIZ UTF8_HORIZ);
- debug_print_taint(yield->s);
+ debug_printf_indent(UTF8_VERT_RIGHT UTF8_HORIZ UTF8_HORIZ
+ "expanding: %.*s\n",
+ (int)(s - string), string);
+ debug_printf_indent("%s" UTF8_HORIZ UTF8_HORIZ UTF8_HORIZ UTF8_HORIZ UTF8_HORIZ
+ "result: %s\n",
+ flags & ESI_SKIPPING ? UTF8_VERT_RIGHT : UTF8_UP_RIGHT,
+ res);
+ if (tainted)
+ {
+ debug_printf_indent("%s",
+ flags & ESI_SKIPPING
+ ? UTF8_VERT " " : " " UTF8_UP_RIGHT UTF8_HORIZ UTF8_HORIZ);
+ debug_print_taint(res);
+ }
+ if (flags & ESI_SKIPPING)
+ debug_printf_indent(UTF8_UP_RIGHT UTF8_HORIZ UTF8_HORIZ UTF8_HORIZ
+ "skipping: result is not used\n");
}
- if (skipping)
- debug_printf_indent(UTF8_UP_RIGHT UTF8_HORIZ UTF8_HORIZ UTF8_HORIZ
- "skipping: result is not used\n");
}
- }
-expand_level--;
-return yield->s;
+ if (textonly_p) *textonly_p = textonly;
+ expand_level--;
+ return res;
+ }
/* This is the failure exit: easiest to program with a goto. We still need
to update the pointer to the terminator, for cases of nested calls with "fail".
}
+
/* This is the external function call. Do a quick check for any expansion
metacharacters, and if there are none, just return the input string.
-Argument: the string to be expanded
+Arguments
+ the string to be expanded
+ optional pointer for return boolean indicating no-dynamic-expansions
+
Returns: the expanded string, or NULL if expansion failed; if failure was
due to a lookup deferring, search_find_defer will be TRUE
*/
const uschar *
-expand_cstring(const uschar * string)
+expand_string_2(const uschar * string, BOOL * textonly_p)
{
if (Ustrpbrk(string, "$\\") != NULL)
{
f.search_find_defer = FALSE;
malformed_header = FALSE;
store_pool = POOL_MAIN;
- s = expand_string_internal(string, FALSE, NULL, FALSE, TRUE, NULL);
+ s = expand_string_internal(string, ESI_HONOR_DOLLAR, NULL, NULL, textonly_p);
store_pool = old_pool;
return s;
}
+if (textonly_p) *textonly_p = TRUE;
return string;
}
+const uschar *
+expand_cstring(const uschar * string)
+{ return expand_string_2(string, NULL); }
uschar *
expand_string(uschar * string)
-{
-return US expand_cstring(CUS string);
-}
+{ return US expand_string_2(CUS string, NULL); }
+
for (int i = 0; i < AUTH_VARS; i++) if (auth_vars[i])
assert_variable_notin(US"auth<n>", US auth_vars[i], &e);
+#ifdef WITH_CONTENT_SCAN
/* check regex<n> variables. assert_variable_notin() treats as const. */
for (int i = 0; i < REGEX_VARS; i++) if (regex_vars[i])
assert_variable_notin(US"regex<n>", US regex_vars[i], &e);
+#endif
/* check known-name variables */
-for (var_entry * v = var_table; v < var_table + var_table_size; v++)
+for (var_entry * v = var_table; v < var_table + nelem(var_table); v++)
if (v->type == vtype_stringptr)
assert_variable_notin(US v->name, *(USS v->value), &e);
return 0;
}
-#endif
+#endif /*STAND_ALONE*/
+#endif /*!MACRO_PREDEF*/
/* vi: aw ai sw=2
*/
/* End of expand.c */
git://git.exim.org / exim.git / commitdiff