2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
21 * @brief String expansion ("translation"). Implements %Attribute -> value
23 * @copyright 2000,2006 The FreeRADIUS server project
24 * @copyright 2000 Alan DeKok <aland@ox.org>
29 #include <freeradius-devel/radiusd.h>
30 #include <freeradius-devel/parser.h>
31 #include <freeradius-devel/rad_assert.h>
32 #include <freeradius-devel/base64.h>
36 typedef struct xlat_t {
37 char name[MAX_STRING_LEN]; //!< Name of the xlat expansion.
38 int length; //!< Length of name.
39 void *instance; //!< Module instance passed to xlat and escape functions.
40 xlat_func_t func; //!< xlat function.
41 xlat_escape_t escape; //!< Escape function to apply to dynamic input to func.
42 bool internal; //!< If true, cannot be redefined.
46 XLAT_LITERAL, //!< Literal string
47 XLAT_PERCENT, //!< Literal string with %v
48 XLAT_MODULE, //!< xlat module
49 XLAT_VIRTUAL, //!< virtual attribute
50 XLAT_ATTRIBUTE, //!< xlat attribute
52 XLAT_REGEX, //!< regex reference
54 XLAT_ALTERNATE //!< xlat conditional syntax :-
58 char const *fmt; //!< The format string.
59 size_t len; //!< Length of the format string.
61 xlat_state_t type; //!< type of this expansion.
62 xlat_exp_t *next; //!< Next in the list.
64 xlat_exp_t *child; //!< Nested expansion.
65 xlat_exp_t *alternate; //!< Alternative expansion if this one expanded to a zero length string.
67 vp_tmpl_t attr; //!< An attribute template.
68 xlat_t const *xlat; //!< The xlat expansion to expand format with.
71 typedef struct xlat_out {
72 char const *out; //!< Output data.
73 size_t len; //!< Length of the output string.
76 static rbtree_t *xlat_root = NULL;
79 static char const * const xlat_foreach_names[] = {"Foreach-Variable-0",
93 static int xlat_inst[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 }; /* up to 10 for foreach */
95 /** Print length of its RHS.
98 static ssize_t xlat_strlen(UNUSED void *instance, UNUSED REQUEST *request,
99 char const *fmt, char *out, size_t outlen)
101 snprintf(out, outlen, "%u", (unsigned int) strlen(fmt));
105 /** Print the size of the attribute in bytes.
108 static ssize_t xlat_length(UNUSED void *instance, REQUEST *request,
109 char const *fmt, char *out, size_t outlen)
112 while (isspace((int) *fmt)) fmt++;
114 if ((radius_get_vp(&vp, request, fmt) < 0) || !vp) {
119 snprintf(out, outlen, "%zu", vp->vp_length);
123 /** Print data as integer, not as VALUE.
126 static ssize_t xlat_integer(UNUSED void *instance, REQUEST *request,
127 char const *fmt, char *out, size_t outlen)
131 uint64_t int64 = 0; /* Needs to be initialised to zero */
132 uint32_t int32 = 0; /* Needs to be initialised to zero */
134 while (isspace((int) *fmt)) fmt++;
136 if ((radius_get_vp(&vp, request, fmt) < 0) || !vp) {
141 switch (vp->da->type) {
144 if (vp->vp_length > 8) {
148 if (vp->vp_length > 4) {
149 memcpy(&int64, vp->vp_octets, vp->vp_length);
150 return snprintf(out, outlen, "%" PRIu64, htonll(int64));
153 memcpy(&int32, vp->vp_octets, vp->vp_length);
154 return snprintf(out, outlen, "%i", htonl(int32));
156 case PW_TYPE_INTEGER64:
157 return snprintf(out, outlen, "%" PRIu64, vp->vp_integer64);
160 * IP addresses are treated specially, as parsing functions assume the value
161 * is bigendian and will convert it for us.
163 case PW_TYPE_IPV4_ADDR:
164 return snprintf(out, outlen, "%u", htonl(vp->vp_ipaddr));
166 case PW_TYPE_IPV4_PREFIX:
167 return snprintf(out, outlen, "%u", htonl((*(uint32_t *)(vp->vp_ipv4prefix + 2))));
169 case PW_TYPE_INTEGER:
170 return snprintf(out, outlen, "%u", vp->vp_integer);
173 return snprintf(out, outlen, "%u", vp->vp_date);
176 return snprintf(out, outlen, "%u", (unsigned int) vp->vp_byte);
179 return snprintf(out, outlen, "%u", (unsigned int) vp->vp_short);
182 * Ethernet is weird... It's network related, so we assume to it should be
185 case PW_TYPE_ETHERNET:
186 memcpy(&int64, vp->vp_ether, vp->vp_length);
187 return snprintf(out, outlen, "%" PRIu64, htonll(int64));
190 return snprintf(out, outlen, "%i", vp->vp_signed);
192 case PW_TYPE_IPV6_ADDR:
193 return fr_prints_uint128(out, outlen, ntohlll(*(uint128_t const *) &vp->vp_ipv6addr));
195 case PW_TYPE_IPV6_PREFIX:
196 return fr_prints_uint128(out, outlen, ntohlll(*(uint128_t const *) &vp->vp_ipv6prefix[2]));
202 REDEBUG("Type '%s' of length %zu cannot be converted to integer",
203 fr_int2str(dict_attr_types, vp->da->type, "???"), vp->vp_length);
209 /** Print data as hex, not as VALUE.
212 static ssize_t xlat_hex(UNUSED void *instance, REQUEST *request,
213 char const *fmt, char *out, size_t outlen)
221 uint8_t const *buff = NULL;
223 while (isspace((int) *fmt)) fmt++;
225 if ((radius_get_vp(&vp, request, fmt) < 0) || !vp) {
234 if (vp->da->type == PW_TYPE_OCTETS) {
238 * Cast the value_data_t of the VP to an octets string and
242 ret = value_data_cast(request, &dst, PW_TYPE_OCTETS, NULL, vp->da->type,
243 NULL, &vp->data, vp->vp_length);
245 REDEBUG("%s", fr_strerror());
249 p = buff = dst.octets;
255 * Don't truncate the data.
257 if (outlen < (len * 2)) {
258 rad_const_free(buff);
262 for (i = 0; i < len; i++) {
263 snprintf(out + 2*i, 3, "%02x", p[i]);
265 rad_const_free(buff);
270 /** Return the tag of an attribute reference
273 static ssize_t xlat_tag(UNUSED void *instance, REQUEST *request,
274 char const *fmt, char *out, size_t outlen)
278 while (isspace((int) *fmt)) fmt++;
280 if ((radius_get_vp(&vp, request, fmt) < 0) || !vp) {
285 if (!vp->da->flags.has_tag || !TAG_VALID(vp->tag)) {
290 return snprintf(out, outlen, "%u", vp->tag);
293 /** Return the vendor of an attribute reference
296 static ssize_t xlat_vendor(UNUSED void *instance, REQUEST *request,
297 char const *fmt, char *out, size_t outlen)
302 while (isspace((int) *fmt)) fmt++;
304 if ((radius_get_vp(&vp, request, fmt) < 0) || !vp) {
309 vendor = dict_vendorbyvalue(vp->da->vendor);
314 strlcpy(out, vendor->name, outlen);
316 return vendor->length;
319 /** Return the vendor number of an attribute reference
322 static ssize_t xlat_vendor_num(UNUSED void *instance, REQUEST *request,
323 char const *fmt, char *out, size_t outlen)
327 while (isspace((int) *fmt)) fmt++;
329 if ((radius_get_vp(&vp, request, fmt) < 0) || !vp) {
334 return snprintf(out, outlen, "%u", vp->da->vendor);
337 /** Return the attribute name of an attribute reference
340 static ssize_t xlat_attr(UNUSED void *instance, REQUEST *request,
341 char const *fmt, char *out, size_t outlen)
345 while (isspace((int) *fmt)) fmt++;
347 if ((radius_get_vp(&vp, request, fmt) < 0) || !vp) {
351 strlcpy(out, vp->da->name, outlen);
353 return strlen(vp->da->name);
356 /** Return the attribute number of an attribute reference
359 static ssize_t xlat_attr_num(UNUSED void *instance, REQUEST *request,
360 char const *fmt, char *out, size_t outlen)
364 while (isspace((int) *fmt)) fmt++;
366 if ((radius_get_vp(&vp, request, fmt) < 0) || !vp) {
371 return snprintf(out, outlen, "%u", vp->da->attr);
374 /** Print out attribute info
376 * Prints out all instances of a current attribute, or all attributes in a list.
378 * At higher debugging levels, also prints out alternative decodings of the same
379 * value. This is helpful to determine types for unknown attributes of long
380 * passed vendors, or just crazy/broken NAS.
382 * This expands to a zero length string.
384 static ssize_t xlat_debug_attr(UNUSED void *instance, REQUEST *request, char const *fmt,
385 char *out, UNUSED size_t outlen)
392 if (!RDEBUG_ENABLED2) {
397 while (isspace((int) *fmt)) fmt++;
399 if (tmpl_from_attr_str(&vpt, fmt, REQUEST_CURRENT, PAIR_LIST_REQUEST, false, false) <= 0) {
400 RDEBUG("%s", fr_strerror());
404 RIDEBUG("Attributes matching \"%s\"", fmt);
407 for (vp = tmpl_cursor_init(NULL, &cursor, request, &vpt);
409 vp = tmpl_cursor_next(&cursor, &vpt)) {
410 FR_NAME_NUMBER const *type;
413 value = vp_aprints_value(vp, vp, '\'');
414 if (vp->da->flags.has_tag) {
415 RIDEBUG2("&%s:%s:%i %s %s",
416 fr_int2str(pair_lists, vpt.tmpl_list, "<INVALID>"),
419 fr_int2str(fr_tokens, vp->op, "<INVALID>"),
422 RIDEBUG2("&%s:%s %s %s",
423 fr_int2str(pair_lists, vpt.tmpl_list, "<INVALID>"),
425 fr_int2str(fr_tokens, vp->op, "<INVALID>"),
430 if (!RDEBUG_ENABLED3) continue;
432 if (vp->da->vendor) {
435 dv = dict_vendorbyvalue(vp->da->vendor);
436 RIDEBUG2("Vendor : %i (%s)", vp->da->vendor, dv ? dv->name : "unknown");
438 RIDEBUG2("Type : %s", fr_int2str(dict_attr_types, vp->da->type, "<INVALID>"));
439 RIDEBUG2("Length : %zu", vp->vp_length);
441 if (!RDEBUG_ENABLED4) continue;
443 type = dict_attr_types;
447 value_data_t *dst = NULL;
451 if ((PW_TYPE) type->number == vp->da->type) {
455 switch (type->number) {
456 case PW_TYPE_INVALID: /* Not real type */
457 case PW_TYPE_MAX: /* Not real type */
458 case PW_TYPE_EXTENDED: /* Not safe/appropriate */
459 case PW_TYPE_LONG_EXTENDED: /* Not safe/appropriate */
460 case PW_TYPE_TLV: /* Not safe/appropriate */
461 case PW_TYPE_EVS: /* Not safe/appropriate */
462 case PW_TYPE_VSA: /* @fixme We need special behaviour for these */
463 case PW_TYPE_COMBO_IP_ADDR: /* Covered by IPv4 address IPv6 address */
464 case PW_TYPE_COMBO_IP_PREFIX: /* Covered by IPv4 address IPv6 address */
465 case PW_TYPE_TIMEVAL: /* Not a VALUE_PAIR type */
472 dst = talloc_zero(vp, value_data_t);
473 ret = value_data_cast(dst, dst, type->number, NULL, vp->da->type, vp->da,
474 &vp->data, vp->vp_length);
475 if (ret < 0) goto next_type; /* We expect some to fail */
477 value = value_data_aprints(dst, type->number, NULL, dst, (size_t)ret, '\'');
478 if (!value) goto next_type;
480 if ((pad = (11 - strlen(type->name))) < 0) {
485 RDEBUG2("as %s%*s: %s", type->name, pad, " ", value);
498 /** Processes fmt as a map string and applies it to the current request
500 * e.g. "%{map:&User-Name := 'foo'}"
502 * Allows sets of modifications to be cached and then applied.
503 * Useful for processing generic attributes from LDAP.
505 static ssize_t xlat_map(UNUSED void *instance, REQUEST *request,
506 char const *fmt, char *out, size_t outlen)
508 vp_map_t *map = NULL;
511 if (map_afrom_attr_str(request, &map, fmt,
512 REQUEST_CURRENT, PAIR_LIST_REQUEST,
513 REQUEST_CURRENT, PAIR_LIST_REQUEST) < 0) {
514 REDEBUG("Failed parsing \"%s\" as map: %s", fmt, fr_strerror());
519 ret = map_to_request(request, map, map_to_vp, NULL);
522 if (ret < 0) return strlcpy(out, "0", outlen);
524 return strlcpy(out, "1", outlen);
527 /** Prints the current module processing the request
530 static ssize_t xlat_module(UNUSED void *instance, REQUEST *request,
531 UNUSED char const *fmt, char *out, size_t outlen)
533 strlcpy(out, request->module, outlen);
538 #if defined(HAVE_REGEX) && defined(HAVE_PCRE)
539 static ssize_t xlat_regex(UNUSED void *instance, REQUEST *request,
540 char const *fmt, char *out, size_t outlen)
545 if (regex_request_to_sub_named(request, &p, request, fmt) < 0) {
550 len = talloc_array_length(p);
552 RDEBUG("Insufficient buffer space to write subcapture value, needed %zu bytes, have %zu bytes",
556 strlcpy(out, p, outlen);
558 return len - 1; /* - \0 */
563 /** Implements the Foreach-Variable-X
567 static ssize_t xlat_foreach(void *instance, REQUEST *request,
568 UNUSED char const *fmt, char *out, size_t outlen)
574 * See modcall, "FOREACH" for how this works.
576 pvp = (VALUE_PAIR **) request_data_reference(request, (void *)radius_get_vp, *(int*) instance);
582 len = vp_prints_value(out, outlen, *pvp, 0);
583 if (is_truncated(len, outlen)) {
584 RDEBUG("Insufficient buffer space to write foreach value");
592 /** Print data as string, if possible.
594 * If attribute "Foo" is defined as "octets" it will normally
595 * be printed as 0x0a0a0a. The xlat "%{string:Foo}" will instead
598 static ssize_t xlat_string(UNUSED void *instance, REQUEST *request,
599 char const *fmt, char *out, size_t outlen)
606 while (isspace((int) *fmt)) fmt++;
614 if ((radius_get_vp(&vp, request, fmt) < 0) || !vp) goto nothing;
616 ret = rad_vp2data(&p, vp);
621 switch (vp->da->type) {
623 len = fr_prints(out, outlen, (char const *) p, vp->vp_length, '"');
627 * Note that "%{string:...}" is NOT binary safe!
628 * It is explicitly used to get rid of embedded zeros.
631 len = strlcpy(out, vp->vp_strvalue, outlen);
635 len = fr_prints(out, outlen, (char const *) p, ret, '\0');
642 /** xlat expand string attribute value
645 static ssize_t xlat_xlat(UNUSED void *instance, REQUEST *request,
646 char const *fmt, char *out, size_t outlen)
650 while (isspace((int) *fmt)) fmt++;
658 if ((radius_get_vp(&vp, request, fmt) < 0) || !vp) goto nothing;
660 return radius_xlat(out, outlen, request, vp->vp_strvalue, NULL, NULL);
663 /** Dynamically change the debugging level for the current request
667 static ssize_t xlat_debug(UNUSED void *instance, REQUEST *request,
668 char const *fmt, char *out, size_t outlen)
673 * Expand to previous (or current) level
675 snprintf(out, outlen, "%d", request->log.lvl);
678 * Assume we just want to get the current value and NOT set it to 0
685 request->log.lvl = RAD_REQUEST_LVL_NONE;
686 request->log.func = NULL;
688 if (level > 4) level = 4;
690 request->log.lvl = level;
691 request->log.func = vradlog_request;
699 * Compare two xlat_t structs, based ONLY on the module name.
701 static int xlat_cmp(void const *one, void const *two)
703 xlat_t const *a = one;
704 xlat_t const *b = two;
706 if (a->length != b->length) {
707 return a->length - b->length;
710 return memcmp(a->name, b->name, a->length);
715 * find the appropriate registered xlat function.
717 static xlat_t *xlat_find(char const *name)
721 strlcpy(my_xlat.name, name, sizeof(my_xlat.name));
722 my_xlat.length = strlen(my_xlat.name);
724 return rbtree_finddata(xlat_root, &my_xlat);
728 /** Register an xlat function.
730 * @param[in] name xlat name.
731 * @param[in] func xlat function to be called.
732 * @param[in] escape function to sanitize any sub expansions passed to the xlat function.
733 * @param[in] instance of module that's registering the xlat function.
734 * @return 0 on success, -1 on failure
736 int xlat_register(char const *name, xlat_func_t func, xlat_escape_t escape, void *instance)
742 if (!name || !*name) {
743 DEBUG("xlat_register: Invalid xlat name");
748 * First time around, build up the tree...
750 * FIXME: This code should be hoisted out of this function,
751 * and into a global "initialization". But it isn't critical...
758 xlat_root = rbtree_create(NULL, xlat_cmp, NULL, RBTREE_FLAG_REPLACE);
760 DEBUG("xlat_register: Failed to create tree");
765 for (i = 0; xlat_foreach_names[i] != NULL; i++) {
766 xlat_register(xlat_foreach_names[i],
767 xlat_foreach, NULL, &xlat_inst[i]);
768 c = xlat_find(xlat_foreach_names[i]);
769 rad_assert(c != NULL);
774 #define XLAT_REGISTER(_x) xlat_register(STRINGIFY(_x), xlat_ ## _x, NULL, NULL); \
775 c = xlat_find(STRINGIFY(_x)); \
776 rad_assert(c != NULL); \
779 XLAT_REGISTER(integer);
780 XLAT_REGISTER(strlen);
781 XLAT_REGISTER(length);
784 XLAT_REGISTER(vendor);
785 XLAT_REGISTER(vendor_num);
787 XLAT_REGISTER(attr_num);
788 XLAT_REGISTER(string);
791 XLAT_REGISTER(module);
792 XLAT_REGISTER(debug_attr);
793 #if defined(HAVE_REGEX) && defined(HAVE_PCRE)
794 XLAT_REGISTER(regex);
797 xlat_register("debug", xlat_debug, NULL, &xlat_inst[0]);
798 c = xlat_find("debug");
799 rad_assert(c != NULL);
804 * If it already exists, replace the instance.
806 strlcpy(my_xlat.name, name, sizeof(my_xlat.name));
807 my_xlat.length = strlen(my_xlat.name);
808 c = rbtree_finddata(xlat_root, &my_xlat);
811 DEBUG("xlat_register: Cannot re-define internal xlat");
817 c->instance = instance;
822 * Doesn't exist. Create it.
824 c = talloc_zero(xlat_root, xlat_t);
828 strlcpy(c->name, name, sizeof(c->name));
829 c->length = strlen(c->name);
830 c->instance = instance;
832 node = rbtree_insert_node(xlat_root, c);
839 * Ensure that the data is deleted when the node is
842 * @todo: Maybe this should be the other way around...
843 * when a thing IN the tree is deleted, it's automatically
844 * removed from the tree. But for now, this works.
846 (void) talloc_steal(node, c);
850 /** Unregister an xlat function
852 * We can only have one function to call per name, so the passing of "func"
853 * here is extraneous.
855 * @param[in] name xlat to unregister.
856 * @param[in] func unused.
857 * @param[in] instance data.
859 void xlat_unregister(char const *name, UNUSED xlat_func_t func, void *instance)
864 if (!name || !xlat_root) return;
866 strlcpy(my_xlat.name, name, sizeof(my_xlat.name));
867 my_xlat.length = strlen(my_xlat.name);
869 c = rbtree_finddata(xlat_root, &my_xlat);
872 if (c->instance != instance) return;
874 rbtree_deletebydata(xlat_root, c);
877 static int xlat_unregister_callback(void *instance, void *data)
879 xlat_t *c = (xlat_t *) data;
881 if (c->instance != instance) return 0; /* keep walking */
883 return 2; /* delete it */
886 void xlat_unregister_module(void *instance)
888 rbtree_walk(xlat_root, RBTREE_DELETE_ORDER, xlat_unregister_callback, instance);
892 * Internal redundant handler for xlats
894 typedef enum xlat_redundant_type_t {
898 XLAT_REDUNDANT_LOAD_BALANCE,
899 } xlat_redundant_type_t;
901 typedef struct xlat_redundant_t {
902 xlat_redundant_type_t type;
908 static ssize_t xlat_redundant(void *instance, REQUEST *request,
909 char const *fmt, char *out, size_t outlen)
911 xlat_redundant_t *xr = instance;
916 rad_assert(xr->type == XLAT_REDUNDANT);
919 * Pick the first xlat which succeeds
921 for (ci = cf_item_find_next(xr->cs, NULL);
923 ci = cf_item_find_next(xr->cs, ci)) {
926 if (!cf_item_is_pair(ci)) continue;
928 name = cf_pair_attr(cf_item_to_pair(ci));
929 rad_assert(name != NULL);
931 xlat = xlat_find(name);
934 rcode = xlat->func(xlat->instance, request, fmt, out, outlen);
935 if (rcode <= 0) continue;
940 * Everything failed. Oh well.
947 static ssize_t xlat_load_balance(void *instance, REQUEST *request,
948 char const *fmt, char *out, size_t outlen)
951 xlat_redundant_t *xr = instance;
953 CONF_ITEM *found = NULL;
958 * Choose a child at random.
960 for (ci = cf_item_find_next(xr->cs, NULL);
962 ci = cf_item_find_next(xr->cs, ci)) {
963 if (!cf_item_is_pair(ci)) continue;
967 * Replace the previously found one with a random
970 if ((count * (fr_rand() & 0xffff)) < (uint32_t) 0x10000) {
976 * Plain load balancing: do one child, and only one child.
978 if (xr->type == XLAT_LOAD_BALANCE) {
979 name = cf_pair_attr(cf_item_to_pair(found));
980 rad_assert(name != NULL);
982 xlat = xlat_find(name);
983 if (!xlat) return -1;
985 return xlat->func(xlat->instance, request, fmt, out, outlen);
988 rad_assert(xr->type == XLAT_REDUNDANT_LOAD_BALANCE);
991 * Try the random one we found. If it fails, keep going
992 * through the rest of the children.
996 name = cf_pair_attr(cf_item_to_pair(ci));
997 rad_assert(name != NULL);
999 xlat = xlat_find(name);
1003 rcode = xlat->func(xlat->instance, request, fmt, out, outlen);
1004 if (rcode > 0) return rcode;
1008 * Go to the next one, wrapping around at the end.
1010 ci = cf_item_find_next(xr->cs, ci);
1011 if (!ci) ci = cf_item_find_next(xr->cs, NULL);
1012 } while (ci != found);
1018 bool xlat_register_redundant(CONF_SECTION *cs)
1020 char const *name1, *name2;
1021 xlat_redundant_t *xr;
1023 name1 = cf_section_name1(cs);
1024 name2 = cf_section_name2(cs);
1026 if (!name2) return false;
1028 if (xlat_find(name2)) {
1029 cf_log_err_cs(cs, "An expansion is already registered for this name");
1033 xr = talloc_zero(cs, xlat_redundant_t);
1034 if (!xr) return false;
1036 if (strcmp(name1, "redundant") == 0) {
1037 xr->type = XLAT_REDUNDANT;
1039 } else if (strcmp(name1, "redundant-load-balance") == 0) {
1040 xr->type = XLAT_REDUNDANT_LOAD_BALANCE;
1042 } else if (strcmp(name1, "load-balance") == 0) {
1043 xr->type = XLAT_LOAD_BALANCE;
1052 * Get the number of children for load balancing.
1054 if (xr->type == XLAT_REDUNDANT) {
1055 if (xlat_register(name2, xlat_redundant, NULL, xr) < 0) {
1063 for (ci = cf_item_find_next(cs, NULL);
1065 ci = cf_item_find_next(cs, ci)) {
1066 if (!cf_item_is_pair(ci)) continue;
1068 if (!xlat_find(cf_pair_attr(cf_item_to_pair(ci)))) {
1076 if (xlat_register(name2, xlat_load_balance, NULL, xr) < 0) {
1086 /** Crappy temporary function to add attribute ref support to xlats
1088 * This needs to die, and hopefully will die, when xlat functions accept
1089 * xlat node structures.
1091 * Provides either a pointer to a buffer which contains the value of the reference VALUE_PAIR
1092 * in an architecture independent format. Or a pointer to the start of the fmt string.
1094 * The pointer is only guaranteed to be valid between calls to xlat_fmt_to_ref,
1095 * and so long as the source VALUE_PAIR is not freed.
1097 * @param out where to write a pointer to the buffer to the data the xlat function needs to work on.
1098 * @param request current request.
1099 * @param fmt string.
1100 * @returns the length of the data or -1 on error.
1102 ssize_t xlat_fmt_to_ref(uint8_t const **out, REQUEST *request, char const *fmt)
1106 while (isspace((int) *fmt)) fmt++;
1108 if (fmt[0] == '&') {
1109 if ((radius_get_vp(&vp, request, fmt) < 0) || !vp) {
1114 return rad_vp2data(out, vp);
1117 *out = (uint8_t const *)fmt;
1121 /** De-register all xlat functions, used mainly for debugging.
1124 void xlat_free(void)
1126 rbtree_free(xlat_root);
1130 # define XLAT_DEBUG DEBUG3
1132 # define XLAT_DEBUG(...)
1135 static ssize_t xlat_tokenize_expansion(TALLOC_CTX *ctx, char *fmt, xlat_exp_t **head,
1136 char const **error);
1137 static ssize_t xlat_tokenize_literal(TALLOC_CTX *ctx, char *fmt, xlat_exp_t **head,
1138 bool brace, char const **error);
1139 static size_t xlat_process(char **out, REQUEST *request, xlat_exp_t const * const head,
1140 xlat_escape_t escape, void *escape_ctx);
1142 static ssize_t xlat_tokenize_alternation(TALLOC_CTX *ctx, char *fmt, xlat_exp_t **head,
1149 rad_assert(fmt[0] == '%');
1150 rad_assert(fmt[1] == '{');
1151 rad_assert(fmt[2] == '%');
1152 rad_assert(fmt[3] == '{');
1154 XLAT_DEBUG("ALTERNATE <-- %s", fmt);
1156 node = talloc_zero(ctx, xlat_exp_t);
1157 node->type = XLAT_ALTERNATE;
1160 slen = xlat_tokenize_expansion(node, p, &node->child, error);
1163 return slen - (p - fmt);
1169 *error = "Expected ':' after first expansion";
1176 *error = "Expected '-' after ':'";
1182 * Allow the RHS to be empty as a special case.
1186 * Hack up an empty string.
1188 node->alternate = talloc_zero(node, xlat_exp_t);
1189 node->alternate->type = XLAT_LITERAL;
1190 node->alternate->fmt = talloc_typed_strdup(node->alternate, "");
1194 slen = xlat_tokenize_literal(node, p, &node->alternate, true, error);
1197 return slen - (p - fmt);
1200 if (!node->alternate) {
1202 *error = "Empty expansion is invalid";
1212 static ssize_t xlat_tokenize_expansion(TALLOC_CTX *ctx, char *fmt, xlat_exp_t **head,
1220 rad_assert(fmt[0] == '%');
1221 rad_assert(fmt[1] == '{');
1226 if ((fmt[2] == '%') && (fmt[3] == '{')) return xlat_tokenize_alternation(ctx, fmt, head, error);
1228 XLAT_DEBUG("EXPANSION <-- %s", fmt);
1229 node = talloc_zero(ctx, xlat_exp_t);
1230 node->fmt = fmt + 2;
1235 * Handle regex's specially.
1238 num = strtol(p, &q, 10);
1239 if (p != q && (*q == '}')) {
1240 XLAT_DEBUG("REGEX <-- %s", fmt);
1243 if ((num > REQUEST_MAX_REGEX) || (num < 0)) {
1245 *error = "Invalid regex reference. Must be in range 0-" STRINGIFY(REQUEST_MAX_REGEX);
1248 node->attr.tmpl_num = num;
1250 node->type = XLAT_REGEX;
1253 return (q - fmt) + 1;
1255 #endif /* HAVE_REGEX */
1260 * %{Tunnel-Password:1}
1261 * %{Tunnel-Password:1[#]}
1262 * %{request:Attr-Name}
1263 * %{request:Tunnel-Password:1}
1264 * %{request:Tunnel-Password:1[#]}
1269 * This is for efficiency, so we don't search for an xlat,
1270 * when what's being referenced is obviously an attribute.
1273 for (q = p; *q != '\0'; q++) {
1274 if (*q == ':') break;
1276 if (isspace((int) *q)) break;
1278 if (*q == '[') continue;
1280 if (*q == '}') break;
1284 * Check for empty expressions %{}
1286 if ((*q == '}') && (q == p)) {
1288 *error = "Empty expression is invalid";
1293 * Might be a module name reference.
1295 * If it's not, it's an attribute or parse error.
1299 node->xlat = xlat_find(node->fmt);
1304 node->type = XLAT_MODULE;
1307 XLAT_DEBUG("MOD <-- %s ... %s", node->fmt, p);
1309 slen = xlat_tokenize_literal(node, p, &node->child, true, error);
1312 return slen - (p - fmt);
1317 rad_assert(node->next == NULL);
1321 *q = ':'; /* Avoids a strdup */
1325 * The first token ends with:
1326 * - '[' - Which is an attribute index, so it must be an attribute.
1327 * - '}' - The end of the expansion, which means it was a bareword.
1329 slen = tmpl_from_attr_substr(&node->attr, p, REQUEST_CURRENT, PAIR_LIST_REQUEST, true, true);
1332 * If the parse error occurred before the ':'
1333 * then the error is changed to 'Unknown module',
1334 * as it was more likely to be a bad module name,
1335 * than a request qualifier.
1337 if ((*q == ':') && ((p + (slen * -1)) < q)) {
1338 *error = "Unknown module";
1340 *error = fr_strerror();
1344 return slen - (p - fmt);
1348 * Might be a virtual XLAT attribute
1350 if (node->attr.type == TMPL_TYPE_ATTR_UNDEFINED) {
1351 node->xlat = xlat_find(node->attr.tmpl_unknown_name);
1352 if (node->xlat && node->xlat->instance && !node->xlat->internal) {
1354 *error = "Missing content in expansion";
1355 return -(p - fmt) - slen;
1359 node->type = XLAT_VIRTUAL;
1360 node->fmt = node->attr.tmpl_unknown_name;
1362 XLAT_DEBUG("VIRTUAL <-- %s", node->fmt);
1364 rad_assert(node->next == NULL);
1370 *error = "Unknown attribute";
1374 node->type = XLAT_ATTRIBUTE;
1379 *error = "No matching closing brace";
1380 return -1; /* second character of format string */
1384 rad_assert(node->next == NULL);
1390 static ssize_t xlat_tokenize_literal(TALLOC_CTX *ctx, char *fmt, xlat_exp_t **head,
1391 bool brace, char const **error)
1396 if (!*fmt) return 0;
1398 XLAT_DEBUG("LITERAL <-- %s", fmt);
1400 node = talloc_zero(ctx, xlat_exp_t);
1403 node->type = XLAT_LITERAL;
1411 *error = "Invalid escape at end of string";
1421 * Process the expansion.
1423 if ((p[0] == '%') && (p[1] == '{')) {
1426 XLAT_DEBUG("EXPANSION-2 <-- %s", node->fmt);
1428 slen = xlat_tokenize_expansion(node, p, &node->next, error);
1431 return slen - (p - fmt);
1433 *p = '\0'; /* end the literal */
1436 rad_assert(node->next != NULL);
1439 * Short-circuit the recursive call.
1440 * This saves another function call and
1441 * memory allocation.
1446 * "foo %{User-Name} bar"
1448 * EXPANSION User-Name
1451 slen = xlat_tokenize_literal(node->next, p, &(node->next->next), brace, error);
1452 rad_assert(slen != 0);
1455 return slen - (p - fmt);
1458 brace = false; /* it was found above, or else the above code errored out */
1460 break; /* stop processing the string */
1464 * Check for valid single-character expansions.
1470 if (!p[1] || !strchr("%}dlmntDGHISTYv", p[1])) {
1472 *error = "Invalid variable expansion";
1477 next = talloc_zero(node, xlat_exp_t);
1483 next->fmt = talloc_strndup(next, p + 1, 1);
1485 XLAT_DEBUG("LITERAL-ESCAPED <-- %s", next->fmt);
1486 next->type = XLAT_LITERAL;
1492 XLAT_DEBUG("PERCENT <-- %c", *next->fmt);
1493 next->type = XLAT_PERCENT;
1506 slen = xlat_tokenize_literal(node->next, p, &(node->next->next), brace, error);
1507 rad_assert(slen != 0);
1510 return slen - (p - fmt);
1513 brace = false; /* it was found above, or else the above code errored out */
1515 break; /* stop processing the string */
1519 * If required, eat the brace.
1521 if (brace && (*p == '}')) {
1533 * We were told to look for a brace, but we ran off of
1534 * the end of the string before we found one.
1537 *error = "Missing closing brace at end of string";
1542 * Squash zero-width literals
1544 if (node->len > 0) {
1548 (void) talloc_steal(ctx, node->next);
1557 static char const xlat_tabs[] = " ";
1559 static void xlat_tokenize_debug(xlat_exp_t const *node, int lvl)
1561 rad_assert(node != NULL);
1563 if (lvl >= (int) sizeof(xlat_tabs)) lvl = sizeof(xlat_tabs);
1566 switch (node->type) {
1568 DEBUG("%.*sliteral --> %s", lvl, xlat_tabs, node->fmt);
1572 DEBUG("%.*spercent --> %c", lvl, xlat_tabs, node->fmt[0]);
1575 case XLAT_ATTRIBUTE:
1576 rad_assert(node->attr.tmpl_da != NULL);
1577 DEBUG("%.*sattribute --> %s", lvl, xlat_tabs, node->attr.tmpl_da->name);
1578 rad_assert(node->child == NULL);
1579 if ((node->attr.tmpl_tag != TAG_ANY) || (node->attr.tmpl_num != NUM_ANY)) {
1580 DEBUG("%.*s{", lvl, xlat_tabs);
1582 DEBUG("%.*sref %d", lvl + 1, xlat_tabs, node->attr.tmpl_request);
1583 DEBUG("%.*slist %d", lvl + 1, xlat_tabs, node->attr.tmpl_list);
1585 if (node->attr.tmpl_tag != TAG_ANY) {
1586 DEBUG("%.*stag %d", lvl + 1, xlat_tabs, node->attr.tmpl_tag);
1588 if (node->attr.tmpl_num != NUM_ANY) {
1589 if (node->attr.tmpl_num == NUM_COUNT) {
1590 DEBUG("%.*s[#]", lvl + 1, xlat_tabs);
1591 } else if (node->attr.tmpl_num == NUM_ALL) {
1592 DEBUG("%.*s[*]", lvl + 1, xlat_tabs);
1594 DEBUG("%.*s[%d]", lvl + 1, xlat_tabs, node->attr.tmpl_num);
1598 DEBUG("%.*s}", lvl, xlat_tabs);
1603 rad_assert(node->fmt != NULL);
1604 DEBUG("%.*svirtual --> %s", lvl, xlat_tabs, node->fmt);
1608 rad_assert(node->xlat != NULL);
1609 DEBUG("%.*sxlat --> %s", lvl, xlat_tabs, node->xlat->name);
1611 DEBUG("%.*s{", lvl, xlat_tabs);
1612 xlat_tokenize_debug(node->child, lvl + 1);
1613 DEBUG("%.*s}", lvl, xlat_tabs);
1619 DEBUG("%.*sregex-var --> %d", lvl, xlat_tabs, node->attr.tmpl_num);
1623 case XLAT_ALTERNATE:
1624 DEBUG("%.*sif {", lvl, xlat_tabs);
1625 xlat_tokenize_debug(node->child, lvl + 1);
1626 DEBUG("%.*s}", lvl, xlat_tabs);
1627 DEBUG("%.*selse {", lvl, xlat_tabs);
1628 xlat_tokenize_debug(node->alternate, lvl + 1);
1629 DEBUG("%.*s}", lvl, xlat_tabs);
1636 size_t xlat_sprint(char *buffer, size_t bufsize, xlat_exp_t const *node)
1647 end = buffer + bufsize;
1650 switch (node->type) {
1652 strlcpy(p, node->fmt, end - p);
1658 p[1] = node->fmt[0];
1662 case XLAT_ATTRIBUTE:
1666 if (node->attr.tmpl_request != REQUEST_CURRENT) {
1667 strlcpy(p, fr_int2str(request_refs, node->attr.tmpl_request, "??"), end - p);
1672 if ((node->attr.tmpl_request != REQUEST_CURRENT) ||
1673 (node->attr.tmpl_list != PAIR_LIST_REQUEST)) {
1674 strlcpy(p, fr_int2str(pair_lists, node->attr.tmpl_list, "??"), end - p);
1679 strlcpy(p, node->attr.tmpl_da->name, end - p);
1682 if (node->attr.tmpl_tag != TAG_ANY) {
1684 snprintf(p, end - p, "%u", node->attr.tmpl_tag);
1688 if (node->attr.tmpl_num != NUM_ANY) {
1690 switch (node->attr.tmpl_num) {
1700 snprintf(p, end - p, "%i", node->attr.tmpl_num);
1709 snprintf(p, end - p, "%%{%i}", node->attr.tmpl_num);
1716 strlcpy(p, node->fmt, end - p);
1724 strlcpy(p, node->xlat->name, end - p);
1727 rad_assert(node->child != NULL);
1728 len = xlat_sprint(p, end - p, node->child);
1733 case XLAT_ALTERNATE:
1737 len = xlat_sprint(p, end - p, node->child);
1743 len = xlat_sprint(p, end - p, node->alternate);
1751 if (p == end) break;
1761 ssize_t xlat_tokenize(TALLOC_CTX *ctx, char *fmt, xlat_exp_t **head,
1764 return xlat_tokenize_literal(ctx, fmt, head, false, error);
1768 /** Tokenize an xlat expansion
1770 * @param[in] request the input request. Memory will be attached here.
1771 * @param[in] fmt the format string to expand
1772 * @param[out] head the head of the xlat list / tree structure.
1774 static ssize_t xlat_tokenize_request(REQUEST *request, char const *fmt, xlat_exp_t **head)
1778 char const *error = NULL;
1783 * Copy the original format string to a buffer so that
1784 * the later functions can mangle it in-place, which is
1787 tokens = talloc_typed_strdup(request, fmt);
1788 if (!tokens) return -1;
1790 slen = xlat_tokenize_literal(request, tokens, head, false, &error);
1793 * Zero length expansion, return a zero length node.
1796 *head = talloc_zero(request, xlat_exp_t);
1800 * Output something like:
1803 * " ^ error was here"
1806 talloc_free(tokens);
1807 rad_assert(error != NULL);
1809 REMARKER(fmt, -slen, error);
1813 if (*head && (rad_debug_lvl > 2)) {
1815 DEBUG("Parsed xlat tree:");
1816 xlat_tokenize_debug(*head, 0);
1820 * All of the nodes point to offsets in the "tokens"
1821 * string. Let's ensure that free'ing head will free
1824 (void) talloc_steal(*head, tokens);
1830 static char *xlat_getvp(TALLOC_CTX *ctx, REQUEST *request, vp_tmpl_t const *vpt,
1831 bool escape, bool return_null)
1833 VALUE_PAIR *vp = NULL, *virtual = NULL;
1834 RADIUS_PACKET *packet = NULL;
1839 char quote = escape ? '"' : '\0';
1841 rad_assert((vpt->type == TMPL_TYPE_ATTR) || (vpt->type == TMPL_TYPE_LIST));
1844 * We only support count and concatenate operations on lists.
1846 if (vpt->type == TMPL_TYPE_LIST) {
1847 vp = tmpl_cursor_init(NULL, &cursor, request, vpt);
1852 * See if we're dealing with an attribute in the request
1854 * This allows users to manipulate virtual attributes as if
1855 * they were real ones.
1857 vp = tmpl_cursor_init(NULL, &cursor, request, vpt);
1858 if (vp) goto do_print;
1861 * We didn't find the VP in a list.
1862 * If it's not a virtual one, and we're not meant to
1863 * be counting it, return.
1865 if (!vpt->tmpl_da->flags.virtual) {
1866 if (vpt->tmpl_num == NUM_COUNT) goto do_print;
1871 * Switch out the request to the one specified by the template
1873 if (radius_request(&request, vpt->tmpl_request) < 0) return NULL;
1876 * Some non-packet expansions
1878 switch (vpt->tmpl_da->attr) {
1880 break; /* ignore them */
1882 case PW_CLIENT_SHORTNAME:
1883 if (vpt->tmpl_num == NUM_COUNT) goto count_virtual;
1884 if (request->client && request->client->shortname) {
1885 return talloc_typed_strdup(ctx, request->client->shortname);
1887 return talloc_typed_strdup(ctx, "<UNKNOWN-CLIENT>");
1889 case PW_REQUEST_PROCESSING_STAGE:
1890 if (vpt->tmpl_num == NUM_COUNT) goto count_virtual;
1891 if (request->component) {
1892 return talloc_typed_strdup(ctx, request->component);
1894 return talloc_typed_strdup(ctx, "server_core");
1896 case PW_VIRTUAL_SERVER:
1897 if (vpt->tmpl_num == NUM_COUNT) goto count_virtual;
1898 if (!request->server) return NULL;
1899 return talloc_typed_strdup(ctx, request->server);
1901 case PW_MODULE_RETURN_CODE:
1902 if (vpt->tmpl_num == NUM_COUNT) goto count_virtual;
1903 if (!request->rcode) return NULL;
1904 return talloc_typed_strdup(ctx, fr_int2str(modreturn_table, request->rcode, ""));
1908 * All of the attributes must now refer to a packet.
1909 * If there's no packet, we can't print any attribute
1912 packet = radius_packet(request, vpt->tmpl_list);
1914 if (return_null) return NULL;
1915 return vp_aprints_type(ctx, vpt->tmpl_da->type);
1919 switch (vpt->tmpl_da->attr) {
1923 case PW_PACKET_TYPE:
1924 dv = dict_valbyattr(PW_PACKET_TYPE, 0, packet->code);
1925 if (dv) return talloc_typed_strdup(ctx, dv->name);
1926 return talloc_typed_asprintf(ctx, "%d", packet->code);
1928 case PW_RESPONSE_PACKET_TYPE:
1933 if (request->proxy_reply && (!request->reply || !request->reply->code)) {
1934 code = request->proxy_reply->code;
1937 if (request->reply) {
1938 code = request->reply->code;
1941 return talloc_typed_strdup(ctx, fr_packet_codes[code]);
1945 * Virtual attributes which require a temporary VALUE_PAIR
1946 * to be allocated. We can't use stack allocated memory
1947 * because of the talloc checks sprinkled throughout the
1948 * various VP functions.
1950 case PW_PACKET_AUTHENTICATION_VECTOR:
1951 virtual = fr_pair_afrom_da(ctx, vpt->tmpl_da);
1952 fr_pair_value_memcpy(virtual, packet->vector, sizeof(packet->vector));
1956 case PW_CLIENT_IP_ADDRESS:
1957 case PW_PACKET_SRC_IP_ADDRESS:
1958 if (packet->src_ipaddr.af == AF_INET) {
1959 virtual = fr_pair_afrom_da(ctx, vpt->tmpl_da);
1960 virtual->vp_ipaddr = packet->src_ipaddr.ipaddr.ip4addr.s_addr;
1965 case PW_PACKET_DST_IP_ADDRESS:
1966 if (packet->dst_ipaddr.af == AF_INET) {
1967 virtual = fr_pair_afrom_da(ctx, vpt->tmpl_da);
1968 virtual->vp_ipaddr = packet->dst_ipaddr.ipaddr.ip4addr.s_addr;
1973 case PW_PACKET_SRC_IPV6_ADDRESS:
1974 if (packet->src_ipaddr.af == AF_INET6) {
1975 virtual = fr_pair_afrom_da(ctx, vpt->tmpl_da);
1976 memcpy(&virtual->vp_ipv6addr,
1977 &packet->src_ipaddr.ipaddr.ip6addr,
1978 sizeof(packet->src_ipaddr.ipaddr.ip6addr));
1983 case PW_PACKET_DST_IPV6_ADDRESS:
1984 if (packet->dst_ipaddr.af == AF_INET6) {
1985 virtual = fr_pair_afrom_da(ctx, vpt->tmpl_da);
1986 memcpy(&virtual->vp_ipv6addr,
1987 &packet->dst_ipaddr.ipaddr.ip6addr,
1988 sizeof(packet->dst_ipaddr.ipaddr.ip6addr));
1993 case PW_PACKET_SRC_PORT:
1994 virtual = fr_pair_afrom_da(ctx, vpt->tmpl_da);
1995 virtual->vp_integer = packet->src_port;
1999 case PW_PACKET_DST_PORT:
2000 virtual = fr_pair_afrom_da(ctx, vpt->tmpl_da);
2001 virtual->vp_integer = packet->dst_port;
2007 * Fake various operations for virtual attributes.
2010 if (vpt->tmpl_num != NUM_ANY) switch (vpt->tmpl_num) {
2012 * [n] is NULL (we only have [0])
2017 * [*] means only one.
2023 * [#] means 1 (as there's only one)
2027 ret = talloc_strdup(ctx, "1");
2031 * [0] is fine (get the first instance)
2040 switch (vpt->tmpl_num) {
2042 * Return a count of the VPs.
2048 for (vp = tmpl_cursor_init(NULL, &cursor, request, vpt);
2050 vp = tmpl_cursor_next(&cursor, vpt)) count++;
2052 return talloc_typed_asprintf(ctx, "%d", count);
2057 * Concatenate all values together,
2058 * separated by commas.
2064 if (!fr_cursor_current(&cursor)) return NULL;
2065 p = vp_aprints_value(ctx, vp, quote);
2066 if (!p) return NULL;
2068 while ((vp = tmpl_cursor_next(&cursor, vpt)) != NULL) {
2069 q = vp_aprints_value(ctx, vp, quote);
2070 if (!q) return NULL;
2071 p = talloc_strdup_append(p, ",");
2072 p = talloc_strdup_append(p, q);
2080 * The cursor was set to the correct
2081 * position above by tmpl_cursor_init.
2083 vp = fr_cursor_current(&cursor);
2088 if (return_null) return NULL;
2089 return vp_aprints_type(ctx, vpt->tmpl_da->type);
2093 ret = vp_aprints_value(ctx, vp, quote);
2096 talloc_free(virtual);
2101 static const char xlat_spaces[] = " ";
2104 static char *xlat_aprint(TALLOC_CTX *ctx, REQUEST *request, xlat_exp_t const * const node,
2105 xlat_escape_t escape, void *escape_ctx, int lvl)
2108 char *str = NULL, *child;
2111 XLAT_DEBUG("%.*sxlat aprint %d %s", lvl, xlat_spaces, node->type, node->fmt);
2113 switch (node->type) {
2115 * Don't escape this.
2118 XLAT_DEBUG("xlat_aprint LITERAL");
2119 return talloc_typed_strdup(ctx, node->fmt);
2122 * Do a one-character expansion.
2127 size_t freespace = 256;
2131 XLAT_DEBUG("xlat_aprint PERCENT");
2133 str = talloc_array(ctx, char, freespace); /* @todo do better allocation */
2136 when = request->timestamp;
2137 if (request->packet) {
2138 when = request->packet->timestamp.tv_sec;
2147 case 'd': /* request day */
2148 if (!localtime_r(&when, &ts)) goto error;
2149 strftime(str, freespace, "%d", &ts);
2152 case 'l': /* request timestamp */
2153 snprintf(str, freespace, "%lu",
2154 (unsigned long) when);
2157 case 'm': /* request month */
2158 if (!localtime_r(&when, &ts)) goto error;
2159 strftime(str, freespace, "%m", &ts);
2162 case 'n': /* Request Number*/
2163 snprintf(str, freespace, "%u", request->number);
2166 case 't': /* request timestamp */
2167 CTIME_R(&when, str, freespace);
2168 nl = strchr(str, '\n');
2172 case 'D': /* request date */
2173 if (!localtime_r(&when, &ts)) goto error;
2174 strftime(str, freespace, "%Y%m%d", &ts);
2177 case 'G': /* request minute */
2178 if (!localtime_r(&when, &ts)) goto error;
2179 strftime(str, freespace, "%M", &ts);
2182 case 'H': /* request hour */
2183 if (!localtime_r(&when, &ts)) goto error;
2184 strftime(str, freespace, "%H", &ts);
2187 case 'I': /* Request ID */
2188 if (request->packet) {
2189 snprintf(str, freespace, "%i", request->packet->id);
2193 case 'S': /* request timestamp in SQL format*/
2194 if (!localtime_r(&when, &ts)) goto error;
2195 strftime(str, freespace, "%Y-%m-%d %H:%M:%S", &ts);
2198 case 'T': /* request timestamp */
2199 if (!localtime_r(&when, &ts)) goto error;
2200 strftime(str, freespace, "%Y-%m-%d-%H.%M.%S.000000", &ts);
2203 case 'Y': /* request year */
2204 if (!localtime_r(&when, &ts)) {
2206 REDEBUG("Failed converting packet timestamp to localtime: %s", fr_syserror(errno));
2210 strftime(str, freespace, "%Y", &ts);
2213 case 'v': /* Version of code */
2214 RWDEBUG("%%v is deprecated and will be removed. Use ${version.freeradius-server}");
2215 snprintf(str, freespace, "%s", radiusd_version_short);
2225 case XLAT_ATTRIBUTE:
2226 XLAT_DEBUG("xlat_aprint ATTRIBUTE");
2229 * Some attributes are virtual <sigh>
2231 str = xlat_getvp(ctx, request, &node->attr, escape ? false : true, true);
2233 XLAT_DEBUG("EXPAND attr %s", node->attr.tmpl_da->name);
2234 XLAT_DEBUG(" ---> %s", str);
2239 XLAT_DEBUG("xlat_aprint VIRTUAL");
2240 str = talloc_array(ctx, char, 2048); /* FIXME: have the module call talloc_typed_asprintf */
2241 rcode = node->xlat->func(node->xlat->instance, request, NULL, str, 2048);
2246 RDEBUG2("EXPAND %s", node->xlat->name);
2247 RDEBUG2(" --> %s", str);
2251 XLAT_DEBUG("xlat_aprint MODULE");
2254 if (xlat_process(&child, request, node->child, node->xlat->escape, node->xlat->instance) == 0) {
2258 XLAT_DEBUG("%.*sEXPAND mod %s %s", lvl, xlat_spaces, node->fmt, node->child->fmt);
2260 XLAT_DEBUG("%.*sEXPAND mod %s", lvl, xlat_spaces, node->fmt);
2261 child = talloc_typed_strdup(ctx, "");
2264 XLAT_DEBUG("%.*s ---> %s", lvl, xlat_spaces, child);
2269 * The OUTPUT of xlat is a "raw" string. The INPUT is a printable string.
2271 * This is really the reverse of fr_prints().
2273 if (cf_new_escape && *child) {
2278 type = PW_TYPE_STRING;
2279 slen = value_data_from_str(request, &data, &type, NULL, child, talloc_array_length(child) - 1, '"');
2293 if (*p == '\\') switch (p[1]) {
2315 str = talloc_array(ctx, char, 2048); /* FIXME: have the module call talloc_typed_asprintf */
2316 *str = '\0'; /* Be sure the string is NULL terminated, we now only free on error */
2318 rcode = node->xlat->func(node->xlat->instance, request, child, str, 2048);
2328 XLAT_DEBUG("xlat_aprint REGEX");
2329 if (regex_request_to_sub(ctx, &str, request, node->attr.tmpl_num) < 0) return NULL;
2334 case XLAT_ALTERNATE:
2335 XLAT_DEBUG("xlat_aprint ALTERNATE");
2336 rad_assert(node->child != NULL);
2337 rad_assert(node->alternate != NULL);
2339 str = xlat_aprint(ctx, request, node->child, escape, escape_ctx, lvl);
2341 XLAT_DEBUG("ALTERNATE got string: %s", str);
2345 XLAT_DEBUG("ALTERNATE going to alternate");
2346 str = xlat_aprint(ctx, request, node->alternate, escape, escape_ctx, lvl);
2352 * If there's no data, return that, instead of an empty string.
2354 if (str && !str[0]) {
2360 * Escape the non-literals we found above.
2362 if (str && escape) {
2365 escaped = talloc_array(ctx, char, 2048); /* FIXME: do something intelligent */
2366 escape(request, escaped, 2038, str, escape_ctx);
2375 static size_t xlat_process(char **out, REQUEST *request, xlat_exp_t const * const head,
2376 xlat_escape_t escape, void *escape_ctx)
2380 char **array, *answer;
2381 xlat_exp_t const *node;
2386 * There are no nodes to process, so the result is a zero
2390 *out = talloc_zero_array(request, char, 1);
2395 * Hack for speed. If it's one expansion, just allocate
2396 * that and return, instead of allocating an intermediary
2401 * Pass the MAIN escape function. Recursive
2402 * calls will call node-specific escape
2405 answer = xlat_aprint(request, request, head, escape, escape_ctx, 0);
2407 *out = talloc_zero_array(request, char, 1);
2411 return strlen(answer);
2414 list = 0; /* FIXME: calculate this once */
2415 for (node = head; node != NULL; node = node->next) {
2419 array = talloc_array(request, char *, list);
2420 if (!array) return -1;
2422 for (node = head, i = 0; node != NULL; node = node->next, i++) {
2423 array[i] = xlat_aprint(array, request, node, escape, escape_ctx, 0); /* may be NULL */
2427 for (i = 0; i < list; i++) {
2428 if (array[i]) total += strlen(array[i]); /* FIXME: calculate strlen once */
2433 *out = talloc_zero_array(request, char, 1);
2437 answer = talloc_array(request, char, total + 1);
2440 for (i = 0; i < list; i++) {
2444 len = strlen(array[i]);
2445 memcpy(answer + total, array[i], len);
2449 answer[total] = '\0';
2450 talloc_free(array); /* and child entries */
2457 /** Replace %whatever in a string.
2459 * See 'doc/configuration/variables.rst' for more information.
2461 * @param[out] out Where to write pointer to output buffer.
2462 * @param[in] outlen Size of out.
2463 * @param[in] request current request.
2464 * @param[in] node the xlat structure to expand
2465 * @param[in] escape function to escape final value e.g. SQL quoting.
2466 * @param[in] escape_ctx pointer to pass to escape function.
2467 * @return length of string written @bug should really have -1 for failure
2469 static ssize_t xlat_expand_struct(char **out, size_t outlen, REQUEST *request, xlat_exp_t const *node,
2470 xlat_escape_t escape, void *escape_ctx)
2475 rad_assert(node != NULL);
2477 len = xlat_process(&buff, request, node, escape, escape_ctx);
2478 if ((len < 0) || !buff) {
2479 rad_assert(buff == NULL);
2480 if (*out) *out[0] = '\0';
2487 * If out doesn't point to an existing buffer
2488 * copy the pointer to our buffer over.
2496 * Otherwise copy the malloced buffer to the fixed one.
2498 strlcpy(*out, buff, outlen);
2503 static ssize_t xlat_expand(char **out, size_t outlen, REQUEST *request, char const *fmt,
2504 xlat_escape_t escape, void *escape_ctx) CC_HINT(nonnull (1, 3, 4));
2506 /** Replace %whatever in a string.
2508 * See 'doc/configuration/variables.rst' for more information.
2510 * @param[out] out Where to write pointer to output buffer.
2511 * @param[in] outlen Size of out.
2512 * @param[in] request current request.
2513 * @param[in] fmt string to expand.
2514 * @param[in] escape function to escape final value e.g. SQL quoting.
2515 * @param[in] escape_ctx pointer to pass to escape function.
2516 * @return length of string written @bug should really have -1 for failure
2518 static ssize_t xlat_expand(char **out, size_t outlen, REQUEST *request, char const *fmt,
2519 xlat_escape_t escape, void *escape_ctx)
2525 * Give better errors than the old code.
2527 len = xlat_tokenize_request(request, fmt, &node);
2532 *out = talloc_zero_array(request, char, 1);
2538 if (*out) *out[0] = '\0';
2542 len = xlat_expand_struct(out, outlen, request, node, escape, escape_ctx);
2545 RDEBUG2("EXPAND %s", fmt);
2546 RDEBUG2(" --> %s", *out);
2551 /** Try to convert an xlat to a tmpl for efficiency
2553 * @param ctx to allocate new vp_tmpl_t in.
2554 * @param node to convert.
2555 * @return NULL if unable to convert (not necessarily error), or a new vp_tmpl_t.
2557 vp_tmpl_t *xlat_to_tmpl_attr(TALLOC_CTX *ctx, xlat_exp_t *node)
2561 if (node->next || (node->type != XLAT_ATTRIBUTE) || (node->attr.type != TMPL_TYPE_ATTR)) return NULL;
2564 * Concat means something completely different as an attribute reference
2565 * Count isn't implemented.
2567 if ((node->attr.tmpl_num == NUM_COUNT) || (node->attr.tmpl_num == NUM_ALL)) return NULL;
2569 vpt = tmpl_alloc(ctx, TMPL_TYPE_ATTR, node->fmt, -1);
2570 if (!vpt) return NULL;
2571 memcpy(&vpt->data, &node->attr.data, sizeof(vpt->data));
2578 /** Try to convert attr tmpl to an xlat for &attr[*] and artificially constructing expansions
2580 * @param ctx to allocate new xlat_expt_t in.
2581 * @param vpt to convert.
2582 * @return NULL if unable to convert (not necessarily error), or a new vp_tmpl_t.
2584 xlat_exp_t *xlat_from_tmpl_attr(TALLOC_CTX *ctx, vp_tmpl_t *vpt)
2588 if (vpt->type != TMPL_TYPE_ATTR) return NULL;
2590 node = talloc_zero(ctx, xlat_exp_t);
2591 node->type = XLAT_ATTRIBUTE;
2592 node->fmt = talloc_bstrndup(node, vpt->name, vpt->len);
2593 tmpl_init(&node->attr, TMPL_TYPE_ATTR, node->fmt, talloc_array_length(node->fmt) - 1);
2594 memcpy(&node->attr.data, &vpt->data, sizeof(vpt->data));
2599 ssize_t radius_xlat(char *out, size_t outlen, REQUEST *request, char const *fmt, xlat_escape_t escape, void *ctx)
2601 return xlat_expand(&out, outlen, request, fmt, escape, ctx);
2604 ssize_t radius_xlat_struct(char *out, size_t outlen, REQUEST *request, xlat_exp_t const *xlat, xlat_escape_t escape, void *ctx)
2606 return xlat_expand_struct(&out, outlen, request, xlat, escape, ctx);
2609 ssize_t radius_axlat(char **out, REQUEST *request, char const *fmt, xlat_escape_t escape, void *ctx)
2611 return xlat_expand(out, 0, request, fmt, escape, ctx);
2614 ssize_t radius_axlat_struct(char **out, REQUEST *request, xlat_exp_t const *xlat, xlat_escape_t escape, void *ctx)
2616 return xlat_expand_struct(out, 0, request, xlat, escape, ctx);