2 * valuepair.c Functions to handle VALUE_PAIRs
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
20 * Copyright 2000,2006 The FreeRADIUS server project
25 #include <freeradius-devel/libradius.h>
29 #ifdef HAVE_PCREPOSIX_H
31 # include <pcreposix.h>
32 #elif defined(HAVE_REGEX_H)
37 * For POSIX Regular expressions.
38 * (0) Means no extended regular expressions.
39 * REG_EXTENDED means use extended regular expressions.
42 # define REG_EXTENDED (0)
46 # define REG_NOSUB (0)
54 * @note Do not call directly, use talloc_free instead.
59 static int _pairfree(VALUE_PAIR *vp) {
61 * The lack of DA means something has gone wrong
64 fr_strerror_printf("VALUE_PAIR has NULL DICT_ATTR pointer (probably already freed)");
66 * Only free the DICT_ATTR if it was dynamically allocated
67 * and was marked for free when the VALUE_PAIR is freed.
69 * @fixme This is an awful hack and needs to be removed once DICT_ATTRs are allocated by talloc.
71 } else if (vp->da->flags.vp_free) {
72 dict_attr_free(&(vp->da));
76 vp->vp_integer = 0xf4eef4ee;
80 talloc_report_depth_cb(NULL, 0, -1, fr_talloc_verify_cb, NULL);
85 /** Dynamically allocate a new attribute
87 * Allocates a new attribute and a new dictionary attr if no DA is provided.
89 * @param[in] ctx for allocated memory, usually a pointer to a RADIUS_PACKET
90 * @param[in] da Specifies the dictionary attribute to build the VP from.
91 * @return a new value pair or NULL if an error occurred.
93 VALUE_PAIR *pairalloc(TALLOC_CTX *ctx, DICT_ATTR const *da)
98 * Caller must specify a da else we don't know what the attribute type is.
101 fr_strerror_printf("Invalid arguments");
105 vp = talloc_zero(ctx, VALUE_PAIR);
107 fr_strerror_printf("Out of memory");
116 vp->length = da->flags.length;
118 talloc_set_destructor(vp, _pairfree);
123 /** Create a new valuepair
125 * If attr and vendor match a dictionary entry then a VP with that DICT_ATTR
128 * If attr or vendor are uknown will call dict_attruknown to create a dynamic
129 * DICT_ATTR of PW_TYPE_OCTETS.
131 * Which type of DICT_ATTR the VALUE_PAIR was created with can be determined by
132 * checking @verbatim vp->da->flags.is_unknown @endverbatim.
134 * @param[in] ctx for allocated memory, usually a pointer to a RADIUS_PACKET
135 * @param[in] attr number.
136 * @param[in] vendor number.
137 * @return the new valuepair or NULL on error.
139 VALUE_PAIR *paircreate(TALLOC_CTX *ctx, unsigned int attr, unsigned int vendor)
143 da = dict_attrbyvalue(attr, vendor);
145 da = dict_attrunknown(attr, vendor, true);
151 return pairalloc(ctx, da);
154 /** Free memory used by a valuepair list.
156 * @todo TLV: needs to free all dependents of each VP freed.
158 void pairfree(VALUE_PAIR **vps)
167 for (vp = fr_cursor_init(&cursor, vps);
169 vp = fr_cursor_next(&cursor)) {
177 /** Mark malformed or unrecognised attributed as unknown
179 * @param vp to change DICT_ATTR of.
180 * @return 0 on success (or if already unknown) else -1 on error.
182 int pair2unknown(VALUE_PAIR *vp)
187 if (vp->da->flags.is_unknown) {
191 da = dict_attrunknown(vp->da->attr, vp->da->vendor, true);
201 /** Find the pair with the matching DAs
204 VALUE_PAIR *pairfind_da(VALUE_PAIR *vp, DICT_ATTR const *da, int8_t tag)
213 for (i = fr_cursor_init(&cursor, &vp);
215 i = fr_cursor_next(&cursor)) {
217 if ((i->da == da) && (!i->da->flags.has_tag || TAG_EQ(tag, i->tag))) {
226 /** Find the pair with the matching attribute
228 * @todo should take DAs and do a pointer comparison.
230 VALUE_PAIR *pairfind(VALUE_PAIR *vp, unsigned int attr, unsigned int vendor, int8_t tag)
237 for (i = fr_cursor_init(&cursor, &vp);
239 i = fr_cursor_next(&cursor)) {
240 if ((i->da->attr == attr) && (i->da->vendor == vendor) && \
241 (!i->da->flags.has_tag || TAG_EQ(tag, i->tag))) {
249 /** Delete matching pairs
251 * Delete matching pairs from the attribute list.
253 * @param[in,out] first VP in list.
254 * @param[in] attr to match.
255 * @param[in] vendor to match.
256 * @param[in] tag to match. TAG_ANY matches any tag, TAG_NONE matches tagless VPs.
258 * @todo should take DAs and do a point comparison.
260 void pairdelete(VALUE_PAIR **first, unsigned int attr, unsigned int vendor,
263 VALUE_PAIR *i, *next;
264 VALUE_PAIR **last = first;
266 for(i = *first; i; i = next) {
269 if ((i->da->attr == attr) && (i->da->vendor == vendor) &&
270 (!i->da->flags.has_tag || TAG_EQ(tag, i->tag))) {
279 /** Add a VP to the end of the list.
281 * Locates the end of 'first', and links an additional VP 'add' at the end.
283 * @param[in] first VP in linked list. Will add new VP to the end of this list.
284 * @param[in] add VP to add to list.
286 void pairadd(VALUE_PAIR **first, VALUE_PAIR *add)
294 if (*first == NULL) {
298 for(i = *first; i->next; i = i->next)
303 /** Replace all matching VPs
305 * Walks over 'first', and replaces the first VP that matches 'replace'.
307 * @note Memory used by the VP being replaced will be freed.
308 * @note Will not work with unknown attributes.
310 * @param[in,out] first VP in linked list. Will search and replace in this list.
311 * @param[in] replace VP to replace.
313 void pairreplace(VALUE_PAIR **first, VALUE_PAIR *replace)
315 VALUE_PAIR *i, *next;
316 VALUE_PAIR **prev = first;
320 if (*first == NULL) {
326 * Not an empty list, so find item if it is there, and
327 * replace it. Note, we always replace the first one, and
328 * we ignore any others that might exist.
330 for(i = *first; i; i = next) {
335 * Found the first attribute, replace it,
338 if ((i->da == replace->da) && (!i->da->flags.has_tag || TAG_EQ(replace->tag, i->tag))) {
342 * Should really assert that replace->next == NULL
344 replace->next = next;
350 * Point to where the attribute should go.
356 * If we got here, we didn't find anything to replace, so
357 * stopped at the last item, which we just append to.
362 int8_t attrtagcmp(void const *a, void const *b)
364 VALUE_PAIR const *my_a = a;
365 VALUE_PAIR const *my_b = b;
372 cmp = fr_pointer_cmp(my_a->da, my_b->da);
374 if (cmp != 0) return cmp;
376 if (my_a->tag < my_b->tag) {
380 if (my_a->tag > my_b->tag) {
387 static void pairsort_split(VALUE_PAIR *source, VALUE_PAIR **front, VALUE_PAIR **back)
393 * Stopping condition - no more elements left to split
395 if (!source || !source->next) {
403 * Fast advances twice as fast as slow, so when it gets to the end,
404 * slow will point to the middle of the linked list.
422 static VALUE_PAIR *pairsort_merge(VALUE_PAIR *a, VALUE_PAIR *b, fr_cmp_t cmp)
424 VALUE_PAIR *result = NULL;
430 * Compare the DICT_ATTRs and tags
432 if (cmp(a, b) <= 0) {
434 result->next = pairsort_merge(a->next, b, cmp);
437 result->next = pairsort_merge(a, b->next, cmp);
443 /** Sort a linked list of VALUE_PAIRs using merge sort
445 * @param[in,out] vps List of VALUE_PAIRs to sort.
446 * @param[in] cmp to sort with
448 void pairsort(VALUE_PAIR **vps, fr_cmp_t cmp)
450 VALUE_PAIR *head = *vps;
455 * If there's 0-1 elements it must already be sorted.
457 if (!head || !head->next) {
461 pairsort_split(head, &a, &b); /* Split into sublists */
462 pairsort(&a, cmp); /* Traverse left */
463 pairsort(&b, cmp); /* Traverse right */
466 * merge the two sorted lists together
468 *vps = pairsort_merge(a, b, cmp);
471 /** Write an error to the library errorbuff detailing the mismatch
473 * Retrieve output with fr_strerror();
475 * @todo add thread specific talloc contexts.
477 * @param ctx a hack until we have thread specific talloc contexts.
478 * @param failed pair of attributes which didn't match.
480 void pairvalidate_debug(TALLOC_CTX *ctx, VALUE_PAIR const *failed[2])
482 VALUE_PAIR const *filter = failed[0];
483 VALUE_PAIR const *list = failed[1];
487 (void) fr_strerror(); /* Clear any existing messages */
489 if (!fr_assert(!(!filter && !list))) return;
493 fr_strerror_printf("Attribute \"%s\" not found in list", filter->da->name);
497 if (!filter || (filter->da != list->da)) {
498 fr_strerror_printf("Attribute \"%s\" not found in filter", list->da->name);
502 if (!TAG_EQ(filter->tag, list->tag)) {
503 fr_strerror_printf("Attribute \"%s\" tag \"%i\" didn't match filter tag \"%i\"",
504 list->da->name, list->tag, filter->tag);
508 pair = vp_aprint(ctx, filter);
509 value = vp_aprint_value(ctx, list);
511 fr_strerror_printf("Attribute value \"%s\" didn't match filter \"%s\"", value, pair);
519 /** Uses paircmp to verify all VALUE_PAIRs in list match the filter defined by check
521 * @note will sort both filter and list in place.
523 * @param failed pointer to an array to write the pointers of the filter/list attributes that didn't match.
525 * @param filter attributes to check list against.
526 * @param list attributes, probably a request or reply
528 bool pairvalidate(VALUE_PAIR const *failed[2], VALUE_PAIR *filter, VALUE_PAIR *list)
530 vp_cursor_t filter_cursor;
531 vp_cursor_t list_cursor;
533 VALUE_PAIR *check, *match;
535 if (!filter && !list) {
540 * This allows us to verify the sets of validate and reply are equal
541 * i.e. we have a validate rule which matches every reply attribute.
543 * @todo this should be removed one we have sets and lists
545 pairsort(&filter, attrtagcmp);
546 pairsort(&list, attrtagcmp);
548 check = fr_cursor_init(&filter_cursor, &filter);
549 match = fr_cursor_init(&list_cursor, &list);
550 while (match || check) {
552 * Lists are of different lengths
554 if ((!match && check) || (check && !match)) goto mismatch;
557 * The lists are sorted, so if the first
558 * attributes aren't of the same type, then we're
561 if (!ATTRIBUTE_EQ(check, match)) goto mismatch;
564 * They're of the same type, but don't have the
565 * same values. This is a problem.
567 * Note that the RFCs say that for attributes of
568 * the same type, order is important.
570 if (paircmp(check, match) != 1) goto mismatch;
572 check = fr_cursor_next(&filter_cursor);
573 match = fr_cursor_next(&list_cursor);
586 /** Uses paircmp to verify all VALUE_PAIRs in list match the filter defined by check
588 * @note will sort both filter and list in place.
590 * @param failed pointer to an array to write the pointers of the filter/list attributes that didn't match.
592 * @param filter attributes to check list against.
593 * @param list attributes, probably a request or reply
595 bool pairvalidate_relaxed(VALUE_PAIR const *failed[2], VALUE_PAIR *filter, VALUE_PAIR *list)
597 vp_cursor_t filter_cursor;
598 vp_cursor_t list_cursor;
600 VALUE_PAIR *check, *last_check = NULL, *match = NULL;
602 if (!filter && !list) {
607 * This allows us to verify the sets of validate and reply are equal
608 * i.e. we have a validate rule which matches every reply attribute.
610 * @todo this should be removed one we have sets and lists
612 pairsort(&filter, attrtagcmp);
613 pairsort(&list, attrtagcmp);
615 fr_cursor_init(&list_cursor, &list);
616 for (check = fr_cursor_init(&filter_cursor, &filter);
618 check = fr_cursor_next(&filter_cursor)) {
620 * Were processing check attributes of a new type.
622 if (!ATTRIBUTE_EQ(last_check, check)) {
624 * Record the start of the matching attributes in the pair list
625 * For every other operator we require the match to be present
627 match = fr_cursor_next_by_da(&list_cursor, check->da, check->tag);
629 if (check->op == T_OP_CMP_FALSE) continue;
633 fr_cursor_init(&list_cursor, &match);
638 * Now iterate over all attributes of the same type.
640 for (match = fr_cursor_first(&list_cursor);
641 ATTRIBUTE_EQ(match, check);
642 match = fr_cursor_next(&list_cursor)) {
644 * This attribute passed the filter
646 if (!paircmp(check, match)) goto mismatch;
660 /** Copy a single valuepair
662 * Allocate a new valuepair and copy the da from the old vp.
664 * @param[in] ctx for talloc
665 * @param[in] vp to copy.
666 * @return a copy of the input VP or NULL on error.
668 VALUE_PAIR *paircopyvp(TALLOC_CTX *ctx, VALUE_PAIR const *vp)
672 if (!vp) return NULL;
676 n = pairalloc(ctx, vp->da);
679 memcpy(n, vp, sizeof(*n));
684 if (vp->type == VT_XLAT) {
685 n->value.xlat = talloc_typed_strdup(n, n->value.xlat);
688 n->da = dict_attr_copy(vp->da, true);
696 switch (vp->da->type) {
699 n->vp_octets = NULL; /* else pairmemcpy will free vp's value */
700 pairmemcpy(n, vp->vp_octets, n->length);
704 n->vp_strvalue = NULL; /* else pairstrnpy will free vp's value */
705 pairstrncpy(n, vp->vp_strvalue, n->length);
715 /** Copy data from one VP to another
717 * Allocate a new pair using da, and copy over the value from the specified
720 * @todo Should be able to do type conversions.
722 * @param[in] ctx for talloc
723 * @param[in] da of new attribute to alloc.
724 * @param[in] vp to copy data from.
725 * @return the new valuepair.
727 VALUE_PAIR *paircopyvpdata(TALLOC_CTX *ctx, DICT_ATTR const *da, VALUE_PAIR const *vp)
731 if (!vp) return NULL;
736 * The types have to be identical, OR the "from" VP has
739 if (da->type != vp->da->type) {
742 VALUE_PAIR const **pvp;
744 if (vp->da->type == PW_TYPE_OCTETS) {
746 * Decode the octets buffer using the RADIUS decoder.
748 if (data2vp(ctx, NULL, NULL, NULL, da, vp->vp_octets, vp->length, vp->length, &n) < 0) {
757 * Else the destination type is octets
759 switch (vp->da->type) {
761 return NULL; /* can't do it */
763 case PW_TYPE_INTEGER:
764 case PW_TYPE_IPV4_ADDR:
767 case PW_TYPE_IPV6_ADDR:
768 case PW_TYPE_IPV6_PREFIX:
771 case PW_TYPE_ETHERNET:
773 case PW_TYPE_INTEGER64:
774 case PW_TYPE_IPV4_PREFIX:
778 n = pairalloc(ctx, da);
781 p = talloc_array(n, uint8_t, dict_attr_sizes[vp->da->type][1] + 2);
784 length = rad_vp2attr(NULL, NULL, NULL, pvp, p, dict_attr_sizes[vp->da->type][1]);
790 pairmemcpy(n, p + 2, length - 2);
795 n = pairalloc(ctx, da);
798 memcpy(n, vp, sizeof(*n));
801 if (n->type == VT_XLAT) {
802 n->value.xlat = talloc_typed_strdup(n, n->value.xlat);
805 if (n->data.ptr) switch (n->da->type) {
808 n->vp_octets = talloc_memdup(n, vp->vp_octets, n->length);
809 talloc_set_type(n->vp_octets, uint8_t);
813 n->vp_strvalue = talloc_memdup(n, vp->vp_strvalue, n->length + 1); /* NULL byte */
814 talloc_set_type(n->vp_strvalue, char);
829 * Copy all pairs from 'from' regardless of tag, attribute or vendor.
831 * @param[in] ctx for new VALUE_PAIRs to be allocated in.
832 * @param[in] from whence to copy VALUE_PAIRs.
833 * @return the head of the new VALUE_PAIR list or NULL on error.
835 VALUE_PAIR *paircopy(TALLOC_CTX *ctx, VALUE_PAIR *from)
837 vp_cursor_t src, dst;
839 VALUE_PAIR *out = NULL, *vp;
841 fr_cursor_init(&dst, &out);
842 for (vp = fr_cursor_init(&src, &from);
844 vp = fr_cursor_next(&src)) {
846 vp = paircopyvp(ctx, vp);
851 fr_cursor_insert(&dst, vp); /* paircopy sets next pointer to NULL */
857 /** Copy matching pairs
859 * Copy pairs of a matching attribute number, vendor number and tag from the
860 * the input list to a new list, and returns the head of this list.
862 * @param[in] ctx for talloc
863 * @param[in] from whence to copy VALUE_PAIRs.
864 * @param[in] attr to match, if 0 input list will not be filtered by attr.
865 * @param[in] vendor to match.
866 * @param[in] tag to match, TAG_ANY matches any tag, TAG_NONE matches tagless VPs.
867 * @return the head of the new VALUE_PAIR list or NULL on error.
869 VALUE_PAIR *paircopy2(TALLOC_CTX *ctx, VALUE_PAIR *from,
870 unsigned int attr, unsigned int vendor, int8_t tag)
872 vp_cursor_t src, dst;
874 VALUE_PAIR *out = NULL, *vp;
876 fr_cursor_init(&dst, &out);
877 for (vp = fr_cursor_init(&src, &from);
879 vp = fr_cursor_next(&src)) {
882 if ((vp->da->attr != attr) || (vp->da->vendor != vendor)) {
886 if (vp->da->flags.has_tag && TAG_EQ(tag, vp->tag)) {
890 vp = paircopyvp(ctx, vp);
895 fr_cursor_insert(&dst, vp);
901 /** Steal all members of a VALUE_PAIR list
903 * @param[in] ctx to move VALUE_PAIRs into
904 * @param[in] from VALUE_PAIRs to move into the new context.
906 VALUE_PAIR *pairsteal(TALLOC_CTX *ctx, VALUE_PAIR *from)
911 for (vp = fr_cursor_init(&cursor, &from);
913 vp = fr_cursor_next(&cursor)) {
914 (void) talloc_steal(ctx, vp);
920 /** Move pairs from source list to destination list respecting operator
922 * @note This function does some additional magic that's probably not needed
923 * in most places. Consider using radius_pairmove in server code.
925 * @note pairfree should be called on the head of the source list to free
926 * unmoved attributes (if they're no longer needed).
928 * @note Does not respect tags when matching.
930 * @param[in] ctx for talloc
931 * @param[in,out] to destination list.
932 * @param[in,out] from source list.
934 * @see radius_pairmove
936 void pairmove(TALLOC_CTX *ctx, VALUE_PAIR **to, VALUE_PAIR **from)
938 VALUE_PAIR *i, *found;
939 VALUE_PAIR *head_new, **tail_new;
940 VALUE_PAIR **tail_from;
942 if (!to || !from || !*from) return;
945 * We're editing the "to" list while we're adding new
946 * attributes to it. We don't want the new attributes to
947 * be edited, so we create an intermediate list to hold
948 * them during the editing process.
951 tail_new = &head_new;
954 * We're looping over the "from" list, moving some
955 * attributes out, but leaving others in place.
958 while ((i = *tail_from) != NULL) {
962 * We never move Fall-Through.
964 if (!i->da->vendor && i->da->attr == PW_FALL_THROUGH) {
965 tail_from = &(i->next);
970 * Unlike previous versions, we treat all other
971 * attributes as normal. i.e. there's no special
972 * treatment for passwords or Hint.
977 * Anything else are operators which
978 * shouldn't occur. We ignore them, and
979 * leave them in place.
982 tail_from = &(i->next);
986 * Add it to the "to" list, but only if
987 * it doesn't already exist.
990 found = pairfind(*to, i->da->attr, i->da->vendor, TAG_ANY);
991 if (!found) goto do_add;
993 tail_from = &(i->next);
997 * Add it to the "to" list, and delete any attribute
998 * of the same vendor/attr which already exists.
1001 found = pairfind(*to, i->da->attr, i->da->vendor, TAG_ANY);
1002 if (!found) goto do_add;
1005 * Do NOT call pairdelete() here,
1006 * due to issues with re-writing
1007 * "request->username".
1009 * Everybody calls pairmove, and
1010 * expects it to work. We can't
1011 * update request->username here,
1012 * so instead we over-write the
1013 * vp that it's pointing to.
1015 switch (found->da->type) {
1020 memcpy(found, i, sizeof(*found));
1025 pairmemsteal(found, i->vp_tlv);
1029 case PW_TYPE_OCTETS:
1030 pairmemsteal(found, i->vp_octets);
1031 i->vp_octets = NULL;
1034 case PW_TYPE_STRING:
1035 pairstrsteal(found, i->vp_strvalue);
1036 i->vp_strvalue = NULL;
1037 found->tag = i->tag;
1042 * Delete *all* of the attributes
1043 * of the same number.
1045 pairdelete(&found->next,
1047 found->da->vendor, TAG_ANY);
1050 * Remove this attribute from the
1053 *tail_from = i->next;
1059 * Move it from the old list and add it
1064 *tail_from = i->next;
1066 *tail_new = talloc_steal(ctx, i);
1067 tail_new = &(i->next);
1070 } /* loop over the "from" list. */
1073 * Take the "new" list, and append it to the "to" list.
1075 pairadd(to, head_new);
1078 /** Move matching pairs between VALUE_PAIR lists
1080 * Move pairs of a matching attribute number, vendor number and tag from the
1081 * the input list to the output list.
1083 * @note pairfree should be called on the head of the old list to free unmoved
1084 attributes (if they're no longer needed).
1086 * @param[in] ctx for talloc
1087 * @param[in,out] to destination list.
1088 * @param[in,out] from source list.
1089 * @param[in] attr to match. If attribute PW_VENDOR_SPECIFIC and vendor 0,
1090 * will match (and therefore copy) only VSAs.
1091 * If attribute 0 and vendor 0 will match (and therefore copy) all
1093 * @param[in] vendor to match.
1094 * @param[in] tag to match, TAG_ANY matches any tag, TAG_NONE matches tagless VPs.
1096 void pairfilter(TALLOC_CTX *ctx, VALUE_PAIR **to, VALUE_PAIR **from, unsigned int attr, unsigned int vendor, int8_t tag)
1098 VALUE_PAIR *to_tail, *i, *next;
1099 VALUE_PAIR *iprev = NULL;
1102 * Find the last pair in the "to" list and put it in "to_tail".
1104 * @todo: replace the "if" with "VALUE_PAIR **tail"
1108 for(i = *to; i; i = i->next) {
1116 * Attr/vendor of 0 means "move them all".
1117 * It's better than "pairadd(foo,bar);bar=NULL"
1119 if ((vendor == 0) && (attr == 0)) {
1121 to_tail->next = *from;
1126 for (i = *from; i; i = i->next) {
1127 (void) talloc_steal(ctx, i);
1134 for(i = *from; i; i = next) {
1138 if (i->da->flags.has_tag && TAG_EQ(tag, i->tag)) {
1143 * vendor=0, attr = PW_VENDOR_SPECIFIC means
1144 * "match any vendor attribute".
1146 if ((vendor == 0) && (attr == PW_VENDOR_SPECIFIC)) {
1148 * It's a VSA: move it over.
1150 if (i->da->vendor != 0) goto move;
1153 * It's Vendor-Specific: move it over.
1155 if (i->da->attr == attr) goto move;
1158 * It's not a VSA: ignore it.
1165 * If it isn't an exact match, ignore it.
1167 if (!((i->da->vendor == vendor) && (i->da->attr == attr))) {
1174 * Remove the attribute from the "from" list.
1182 * Add the attribute to the "to" list.
1190 (void) talloc_steal(ctx, i);
1194 static char const hextab[] = "0123456789abcdef";
1196 /** Convert string value to native attribute value
1198 * @param vp to assign value to.
1199 * @param value string to convert. Binary safe for variable length values if len is provided.
1200 * @param inlen may be 0 in which case strlen(len) is used to determine length, else inline
1201 * should be the length of the string or sub string to parse.
1202 * @return true on success, else false.
1204 int pairparsevalue(VALUE_PAIR *vp, char const *value, size_t inlen)
1210 if (!value) return -1;
1214 * It's a comparison, not a real VALUE_PAIR, copy the string over verbatim
1216 if ((vp->op == T_OP_REG_EQ) || (vp->op == T_OP_REG_NE)) {
1217 pairstrcpy(vp, value); /* Icky hacky ewww */
1221 len = (inlen == 0) ? strlen(value) : inlen;
1224 * It's a variable length type so we just alloc a new buffer
1225 * of size len and copy.
1227 switch(vp->da->type) {
1228 case PW_TYPE_STRING:
1238 vp->vp_strvalue = p = talloc_memdup(vp, value, len + 1);
1240 talloc_set_type(p, char);
1247 if (c == '\\') switch (*cp) {
1277 c = '\\'; /* no cp++ */
1280 if ((cp[0] >= '0') &&
1286 (sscanf(cp, "%3o", &x) == 1)) {
1295 } /* else at EOL \ --> \ */
1301 vp->length = vp_len;
1305 /* raw octets: 0x01020304... */
1307 if (strcmp(value, "ANY") == 0) {
1310 } /* else it's hex */
1312 case PW_TYPE_OCTETS:
1317 * No 0x prefix, just copy verbatim.
1319 if ((len < 2) || (strncasecmp(value, "0x", 2) != 0)) {
1320 pairmemcpy(vp, (uint8_t const *) value, len);
1325 #ifdef WITH_ASCEND_BINARY
1333 if ((len & 0x01) != 0) {
1334 fr_strerror_printf("Length of Hex String is not even, got %zu bytes", vp->length);
1338 vp->length = len >> 1;
1339 p = talloc_array(vp, uint8_t, vp->length);
1340 if (fr_hex2bin(p, vp->length, value + 2, len) != vp->length) {
1342 fr_strerror_printf("Invalid hex data");
1350 case PW_TYPE_ABINARY:
1351 #ifdef WITH_ASCEND_BINARY
1352 if ((len > 1) && (strncasecmp(value, "0x", 2) == 0)) goto do_octets;
1354 if (ascend_parse_filter(vp, value, len) < 0 ) {
1355 /* Allow ascend_parse_filter's strerror to bubble up */
1361 * If Ascend binary is NOT defined,
1362 * then fall through to raw octets, so that
1363 * the user can at least make them by hand...
1368 /* don't use this! */
1373 if ((len < 2) || (len & 0x01) || (strncasecmp(value, "0x", 2) != 0)) {
1374 fr_strerror_printf("Invalid TLV specification");
1379 vp->length = len >> 1;
1380 p = talloc_array(vp, uint8_t, vp->length);
1382 fr_strerror_printf("No memory");
1385 if (fr_hex2bin(p, vp->length, value + 2, len) != vp->length) {
1386 fr_strerror_printf("Invalid hex data in TLV");
1394 case PW_TYPE_IPV4_ADDR:
1398 if (fr_pton4(&addr, value, inlen, fr_hostname_lookups, false) < 0) return -1;
1401 * We allow v4 addresses to have a /32 suffix as some databases (PostgreSQL)
1402 * print them this way.
1404 if (addr.prefix != 32) {
1405 fr_strerror_printf("Invalid IPv4 mask length \"/%i\". Only \"/32\" permitted "
1406 "for non-prefix types", addr.prefix);
1410 vp->vp_ipaddr = addr.ipaddr.ip4addr.s_addr;
1411 vp->length = sizeof(vp->vp_ipaddr);
1415 case PW_TYPE_IPV4_PREFIX:
1419 if (fr_pton4(&addr, value, inlen, fr_hostname_lookups, false) < 0) return -1;
1421 vp->vp_ipv4prefix[1] = addr.prefix;
1422 memcpy(vp->vp_ipv4prefix + 2, &addr.ipaddr.ip4addr.s_addr, sizeof(vp->vp_ipv4prefix) - 2);
1423 vp->length = sizeof(vp->vp_ipv4prefix);
1427 case PW_TYPE_IPV6_ADDR:
1431 if (fr_pton6(&addr, value, inlen, fr_hostname_lookups, false) < 0) return -1;
1434 * We allow v6 addresses to have a /128 suffix as some databases (PostgreSQL)
1435 * print them this way.
1437 if (addr.prefix != 128) {
1438 fr_strerror_printf("Invalid IPv6 mask length \"/%i\". Only \"/128\" permitted "
1439 "for non-prefix types", addr.prefix);
1443 memcpy(&vp->vp_ipv6addr, &addr.ipaddr.ip6addr.s6_addr, sizeof(vp->vp_ipv6addr));
1444 vp->length = sizeof(vp->vp_ipv6addr);
1448 case PW_TYPE_IPV6_PREFIX:
1452 if (fr_pton6(&addr, value, inlen, fr_hostname_lookups, false) < 0) return -1;
1454 vp->vp_ipv6prefix[1] = addr.prefix;
1455 memcpy(vp->vp_ipv6prefix + 2, &addr.ipaddr.ip6addr.s6_addr, sizeof(vp->vp_ipv6prefix) - 2);
1456 vp->length = sizeof(vp->vp_ipv6prefix);
1465 * It's a fixed size type, copy to a temporary buffer and
1466 * \0 terminate if insize >= 0.
1469 if (len >= sizeof(buffer)) {
1470 fr_strerror_printf("Temporary buffer too small");
1474 memcpy(buffer, value, inlen);
1475 buffer[inlen] = '\0';
1479 switch(vp->da->type) {
1486 * Note that ALL integers are unsigned!
1488 vp->vp_integer = fr_strtoul(value, &p);
1490 if (vp->vp_integer > 255) {
1491 fr_strerror_printf("Byte value \"%s\" is larger than 255", value);
1496 if (is_whitespace(p)) break;
1498 goto check_for_value;
1505 * Note that ALL integers are unsigned!
1507 vp->vp_integer = fr_strtoul(value, &p);
1510 if (vp->vp_integer > 65535) {
1511 fr_strerror_printf("Byte value \"%s\" is larger than 65535", value);
1516 if (is_whitespace(p)) break;
1518 goto check_for_value;
1520 case PW_TYPE_INTEGER:
1525 * Note that ALL integers are unsigned!
1527 vp->vp_integer = fr_strtoul(value, &p);
1530 if (is_whitespace(p)) break;
1534 * Look for the named value for the given
1537 if ((dval = dict_valbyname(vp->da->attr, vp->da->vendor, value)) == NULL) {
1538 fr_strerror_printf("Unknown value '%s' for attribute '%s'", value, vp->da->name);
1541 vp->vp_integer = dval->value;
1545 case PW_TYPE_INTEGER64:
1550 * Note that ALL integers are unsigned!
1552 if (sscanf(value, "%" PRIu64, &y) != 1) {
1553 fr_strerror_printf("Invalid value '%s' for attribute '%s'",
1554 value, vp->da->name);
1557 vp->vp_integer64 = y;
1565 * time_t may be 64 bits, whule vp_date
1566 * MUST be 32-bits. We need an
1567 * intermediary variable to handle
1572 if (fr_get_time(value, &date) < 0) {
1573 fr_strerror_printf("failed to parse time string "
1585 if (ifid_aton(value, (void *) &vp->vp_ifid) == NULL) {
1586 fr_strerror_printf("Failed to parse interface-id string \"%s\"", value);
1592 case PW_TYPE_ETHERNET:
1594 char const *c1, *c2, *cp;
1598 * Convert things which are obviously integers to Ethernet addresses
1600 * We assume the number is the bigendian representation of the
1603 if (is_integer(value)) {
1604 uint64_t integer = htonll(atoll(value));
1606 memcpy(&vp->vp_ether, &integer, sizeof(vp->vp_ether));
1614 c2 = memchr(hextab, tolower((int) cp[0]), 16);
1616 } else if ((cp[1] != '\0') && ((cp[2] == ':') || (cp[2] == '\0'))) {
1617 c1 = memchr(hextab, tolower((int) cp[0]), 16);
1618 c2 = memchr(hextab, tolower((int) cp[1]), 16);
1620 if (*cp == ':') cp++;
1624 if (!c1 || !c2 || (vp_len >= sizeof(vp->vp_ether))) {
1625 fr_strerror_printf("failed to parse Ethernet address \"%s\"", value);
1628 vp->vp_ether[vp_len] = ((c1-hextab)<<4) + (c2-hextab);
1637 * Crazy polymorphic (IPv4/IPv6) attribute type for WiMAX.
1639 * We try and make is saner by replacing the original
1640 * da, with either an IPv4 or IPv6 da type.
1642 * These are not dynamic da, and will have the same vendor
1643 * and attribute as the original.
1645 case PW_TYPE_IP_ADDR:
1647 DICT_ATTR const *da;
1649 if (inet_pton(AF_INET6, value, &vp->vp_ipv6addr) > 0) {
1650 da = dict_attrbytype(vp->da->attr, vp->da->vendor, PW_TYPE_IPV6_ADDR);
1652 fr_strerror_printf("Cannot find ipv6addr for %s", vp->da->name);
1656 vp->length = 16; /* length of IPv6 address */
1660 da = dict_attrbytype(vp->da->attr, vp->da->vendor,
1663 fr_strerror_printf("Cannot find ipaddr for %s", vp->da->name);
1667 if (ip_hton(&ipaddr, AF_INET, value, false) < 0) {
1668 fr_strerror_printf("Failed to find IPv4 address for %s", value);
1672 vp->vp_ipaddr = ipaddr.ipaddr.ip4addr.s_addr;
1680 case PW_TYPE_SIGNED:
1681 /* Damned code for 1 WiMAX attribute */
1682 vp->vp_signed = (int32_t) strtol(value, NULL, 10);
1690 fr_strerror_printf("unknown attribute type %d", vp->da->type);
1699 /** Use simple heuristics to create an VALUE_PAIR from an unknown address string
1701 * If a DICT_ATTR is not provided for the address type, parsing will fail with
1704 * @param ctx to allocate VP in.
1705 * @param value IPv4/IPv6 address/prefix string.
1706 * @param ipv4 dictionary attribute to use for an IPv4 address.
1707 * @param ipv6 dictionary attribute to use for an IPv6 address.
1708 * @param ipv4_prefix dictionary attribute to use for an IPv4 prefix.
1709 * @param ipv6_prefix dictionary attribute to use for an IPv6 prefix.
1710 * @return NULL on error, or new VALUE_PAIR.
1712 VALUE_PAIR *pairmake_ip(TALLOC_CTX *ctx, char const *value, DICT_ATTR *ipv4, DICT_ATTR *ipv6,
1713 DICT_ATTR *ipv4_prefix, DICT_ATTR *ipv6_prefix)
1716 DICT_ATTR *da = NULL;
1718 if (!fr_assert(ipv4 || ipv6 || ipv4_prefix || ipv6_prefix)) {
1722 /* No point in repeating the work of pairparsevalue */
1723 if (strchr(value, ':')) {
1724 if (strchr(value, '/')) {
1733 if (strchr(value, '/')) {
1743 fr_strerror_printf("Invalid IP value specified, allowed types are %s%s%s%s",
1744 ipv4 ? "ipaddr " : "", ipv6 ? "ipv6addr " : "",
1745 ipv4_prefix ? "ipv4prefix " : "", ipv6_prefix ? "ipv6prefix" : "");
1748 vp = pairalloc(ctx, da);
1749 if (!vp) return NULL;
1750 if (pairparsevalue(vp, value, 0) < 0) {
1759 /** Create a valuepair from an ASCII attribute and value
1761 * Where the attribute name is in the form:
1763 * - Attr-%d.%d.%d...
1764 * - Vendor-%d-Attr-%d
1765 * - VendorName-Attr-%d
1767 * @param ctx for talloc
1768 * @param attribute name to parse.
1769 * @param value to parse (must be a hex string).
1770 * @param op to assign to new valuepair.
1771 * @return new valuepair or NULL on error.
1773 static VALUE_PAIR *pairmake_any(TALLOC_CTX *ctx,
1774 char const *attribute, char const *value,
1778 DICT_ATTR const *da;
1783 da = dict_attrunknownbyname(attribute, true);
1784 if (!da) return NULL;
1787 * Unknown attributes MUST be of type 'octets'
1789 if (value && (strncasecmp(value, "0x", 2) != 0)) {
1790 fr_strerror_printf("Unknown attribute \"%s\" requires a hex "
1791 "string, not \"%s\"", attribute, value);
1793 dict_attr_free(&da);
1798 * We've now parsed the attribute properly, Let's create
1799 * it. This next stop also looks the attribute up in the
1800 * dictionary, and creates the appropriate type for it.
1802 vp = pairalloc(ctx, da);
1804 dict_attr_free(&da);
1808 vp->op = (op == 0) ? T_OP_EQ : op;
1810 if (!value) return vp;
1812 size = strlen(value + 2);
1813 vp->length = size >> 1;
1814 data = talloc_array(vp, uint8_t, vp->length);
1816 if (fr_hex2bin(data, vp->length, value + 2, size) != vp->length) {
1817 fr_strerror_printf("Invalid hex string");
1822 vp->vp_octets = data;
1828 /** Create a VALUE_PAIR from ASCII strings
1830 * Converts an attribute string identifier (with an optional tag qualifier)
1831 * and value string into a VALUE_PAIR.
1833 * The string value is parsed according to the type of VALUE_PAIR being created.
1835 * @param[in] ctx for talloc
1836 * @param[in] vps list where the attribute will be added (optional)
1837 * @param[in] attribute name.
1838 * @param[in] value attribute value (may be NULL if value will be set later).
1839 * @param[in] op to assign to new VALUE_PAIR.
1840 * @return a new VALUE_PAIR.
1842 VALUE_PAIR *pairmake(TALLOC_CTX *ctx, VALUE_PAIR **vps,
1843 char const *attribute, char const *value, FR_TOKEN op)
1845 DICT_ATTR const *da;
1851 char const *attrname = attribute;
1854 * Check for tags in 'Attribute:Tag' format.
1859 ts = strrchr(attribute, ':');
1861 fr_strerror_printf("Invalid tag for attribute %s", attribute);
1866 strlcpy(buffer, attribute, sizeof(buffer));
1868 ts = strrchr(attrname, ':');
1869 if (!ts) return NULL;
1871 /* Colon found with something behind it */
1872 if (ts[1] == '*' && ts[2] == 0) {
1873 /* Wildcard tag for check items */
1876 } else if ((ts[1] >= '0') && (ts[1] <= '9')) {
1877 /* It's not a wild card tag */
1878 tag = strtol(ts + 1, &tc, 0);
1879 if (tc && !*tc && TAG_VALID_ZERO(tag))
1883 fr_strerror_printf("Invalid tag for attribute %s", attribute);
1890 * It's not found in the dictionary, so we use
1891 * another method to create the attribute.
1893 da = dict_attrbyname(attrname);
1895 vp = pairmake_any(ctx, attrname, value, op);
1896 if (vp && vps) pairadd(vps, vp);
1900 /* Check for a tag in the 'Merit' format of:
1901 * :Tag:Value. Print an error if we already found
1902 * a tag in the Attribute.
1905 if (value && (*value == ':' && da->flags.has_tag)) {
1906 /* If we already found a tag, this is invalid */
1908 fr_strerror_printf("Duplicate tag %s for attribute %s",
1910 DEBUG("Duplicate tag %s for attribute %s\n",
1914 /* Colon found and attribute allows a tag */
1915 if (value[1] == '*' && value[2] == ':') {
1916 /* Wildcard tag for check items */
1921 tag = strtol(value + 1, &tc, 0);
1922 if (tc && *tc==':' && TAG_VALID_ZERO(tag))
1928 vp = pairalloc(ctx, da);
1929 if (!vp) return NULL;
1930 vp->op = (op == 0) ? T_OP_EQ : op;
1935 case T_OP_CMP_FALSE:
1936 vp->vp_strvalue = NULL;
1938 value = NULL; /* ignore it! */
1942 * Regular expression comparison of integer attributes
1943 * does a STRING comparison of the names of their
1944 * integer attributes.
1946 case T_OP_REG_EQ: /* =~ */
1947 case T_OP_REG_NE: /* !~ */
1953 fr_strerror_printf("Regular expressions are not supported");
1959 * Someone else will fill in the value.
1965 compare = regcomp(®, value, REG_EXTENDED);
1967 regerror(compare, ®, buffer, sizeof(buffer));
1968 fr_strerror_printf("Illegal regular expression in attribute: %s: %s",
1974 vp = pairmake(ctx, NULL, attribute, NULL, op);
1975 if (!vp) return NULL;
1977 if (pairmark_xlat(vp, value) < 0) {
1982 value = NULL; /* ignore it */
1991 * FIXME: if (strcasecmp(attribute, vp->da->name) != 0)
1992 * then the user MAY have typed in the attribute name
1993 * as Vendor-%d-Attr-%d, and the value MAY be octets.
1995 * We probably want to fix pairparsevalue to accept
1996 * octets as values for any attribute.
1998 if (value && (pairparsevalue(vp, value, 0) < 0)) {
2003 if (vps) pairadd(vps, vp);
2007 /** Mark a valuepair for xlat expansion
2009 * Copies xlat source (unprocessed) string to valuepair value,
2010 * and sets value type.
2012 * @param vp to mark for expansion.
2013 * @param value to expand.
2014 * @return 0 if marking succeeded or -1 if vp already had a value, or OOM.
2016 int pairmark_xlat(VALUE_PAIR *vp, char const *value)
2021 * valuepair should not already have a value.
2023 if (vp->type != VT_NONE) {
2027 raw = talloc_typed_strdup(vp, value);
2033 vp->value.xlat = raw;
2039 /** Read a single valuepair from a buffer, and advance the pointer
2041 * Sets *eol to T_EOL if end of line was encountered.
2043 * @param[in,out] ptr to read from and update.
2044 * @param[out] raw The struct to write the raw VALUE_PAIR to.
2045 * @return the last token read.
2047 FR_TOKEN pairread(char const **ptr, VALUE_PAIR_RAW *raw)
2051 FR_TOKEN ret = T_OP_INVALID, next, quote;
2054 if (!ptr || !*ptr || !raw) {
2055 fr_strerror_printf("Invalid arguments");
2056 return T_OP_INVALID;
2060 * Skip leading spaces
2063 while ((*p == ' ') || (*p == '\t')) p++;
2066 fr_strerror_printf("No token read where we expected "
2067 "an attribute name");
2068 return T_OP_INVALID;
2072 fr_strerror_printf("Read a comment instead of a token");
2078 * Try to get the attribute name.
2083 uint8_t const *t = (uint8_t const *) p;
2085 if (q >= (raw->l_opand + sizeof(raw->l_opand))) {
2087 fr_strerror_printf("Attribute name too long");
2088 return T_OP_INVALID;
2092 * Only ASCII is allowed, and only a subset of that.
2094 if ((*t < 32) || (*t >= 128)) {
2096 fr_strerror_printf("Invalid attribute name");
2097 return T_OP_INVALID;
2101 * This is arguably easier than trying to figure
2102 * out which operators come after the attribute
2103 * name. Yes, our "lexer" is bad.
2105 if (!dict_attr_allowed_chars[(int) *t]) {
2113 * ASCII, but not a valid attribute name.
2115 if (!*raw->l_opand) goto invalid;
2118 * Look for tag (:#). This is different from :=, which
2121 if ((*p == ':') && (isdigit((int) p[1]))) {
2122 if (q >= (raw->l_opand + sizeof(raw->l_opand))) {
2127 while (isdigit((int) *p)) {
2128 if (q >= (raw->l_opand + sizeof(raw->l_opand))) {
2138 /* Now we should have an operator here. */
2139 raw->op = gettoken(ptr, buf, sizeof(buf), false);
2140 if (raw->op < T_EQSTART || raw->op > T_EQEND) {
2141 fr_strerror_printf("Expecting operator");
2143 return T_OP_INVALID;
2147 * Read value. Note that empty string values are allowed
2149 quote = gettoken(ptr, raw->r_opand, sizeof(raw->r_opand), false);
2150 if (quote == T_EOL) {
2151 fr_strerror_printf("Failed to get value");
2153 return T_OP_INVALID;
2157 * Peek at the next token. Must be T_EOL, T_COMMA, or T_HASH
2161 next = gettoken(&p, buf, sizeof(buf), false);
2172 fr_strerror_printf("Expected end of line or comma");
2173 return T_OP_INVALID;
2181 case T_DOUBLE_QUOTED_STRING:
2183 * Only report as double quoted if it contained valid
2184 * a valid xlat expansion.
2186 p = strchr(raw->r_opand, '%');
2187 if (p && (p[1] == '{')) {
2190 raw->quote = T_SINGLE_QUOTED_STRING;
2203 /** Read one line of attribute/value pairs into a list.
2205 * The line may specify multiple attributes separated by commas.
2207 * @note If the function returns T_OP_INVALID, an error has occurred and
2208 * @note the valuepair list should probably be freed.
2210 * @param ctx for talloc
2211 * @param buffer to read valuepairs from.
2212 * @param list where the parsed VALUE_PAIRs will be appended.
2213 * @return the last token parsed, or T_OP_INVALID
2215 FR_TOKEN userparse(TALLOC_CTX *ctx, char const *buffer, VALUE_PAIR **list)
2217 VALUE_PAIR *vp, *head, **tail;
2219 FR_TOKEN last_token = T_OP_INVALID;
2220 FR_TOKEN previous_token;
2224 * We allow an empty line.
2226 if (buffer[0] == 0) {
2235 raw.l_opand[0] = '\0';
2236 raw.r_opand[0] = '\0';
2238 previous_token = last_token;
2240 last_token = pairread(&p, &raw);
2241 if (last_token == T_OP_INVALID) break;
2243 if (raw.quote == T_DOUBLE_QUOTED_STRING) {
2244 vp = pairmake(ctx, NULL, raw.l_opand, NULL, raw.op);
2246 last_token = T_OP_INVALID;
2249 if (pairmark_xlat(vp, raw.r_opand) < 0) {
2251 last_token = T_OP_INVALID;
2255 vp = pairmake(ctx, NULL, raw.l_opand, raw.r_opand, raw.op);
2257 last_token = T_OP_INVALID;
2263 tail = &((*tail)->next);
2264 } while (*p && (last_token == T_COMMA));
2267 * Don't tell the caller that there was a comment.
2269 if (last_token == T_HASH) {
2270 last_token = previous_token;
2273 if (last_token == T_OP_INVALID) {
2276 pairadd(list, head);
2280 * And return the last token which we read.
2286 * Read valuepairs from the fp up to End-Of-File.
2288 int readvp2(VALUE_PAIR **out, TALLOC_CTX *ctx, FILE *fp, bool *pfiledone)
2291 FR_TOKEN last_token = T_EOL;
2295 VALUE_PAIR *vp = NULL;
2297 fr_cursor_init(&cursor, out);
2299 while (fgets(buf, sizeof(buf), fp) != NULL) {
2301 * If we get a '\n' by itself, we assume that's
2302 * the end of that VP
2304 if (buf[0] == '\n') {
2310 * Comments get ignored
2312 if (buf[0] == '#') continue;
2315 * Read all of the attributes on the current line.
2318 last_token = userparse(ctx, buf, &vp);
2320 if (last_token != T_EOL) goto error;
2324 fr_cursor_insert(&cursor, vp);
2333 vp = fr_cursor_first(&cursor);
2334 if (vp) pairfree(&vp);
2339 /** Compare two attribute values
2341 * @param[in] one the first attribute.
2342 * @param[in] two the second attribute.
2343 * @return -1 if one is less than two, 0 if both are equal, 1 if one is more than two, < -1 on error.
2345 int8_t paircmp_value(VALUE_PAIR const *one, VALUE_PAIR const *two)
2347 int64_t compare = 0;
2352 if (one->da->type != two->da->type) {
2353 fr_strerror_printf("Can't compare attribute values of different types");
2358 * After doing the previous check for special comparisons,
2359 * do the per-type comparison here.
2361 switch (one->da->type) {
2362 case PW_TYPE_ABINARY:
2363 case PW_TYPE_OCTETS:
2367 if (one->length > two->length) {
2368 length = one->length;
2370 length = two->length;
2374 compare = memcmp(one->vp_octets, two->vp_octets, length);
2375 if (compare != 0) break;
2379 * Contents are the same. The return code
2380 * is therefore the difference in lengths.
2382 * i.e. "0x00" is smaller than "0x0000"
2384 compare = one->length - two->length;
2388 case PW_TYPE_STRING:
2389 fr_assert(one->vp_strvalue);
2390 fr_assert(two->vp_strvalue);
2391 compare = strcmp(one->vp_strvalue, two->vp_strvalue);
2394 case PW_TYPE_BOOLEAN:
2397 case PW_TYPE_INTEGER:
2399 compare = (int64_t) one->vp_integer - (int64_t) two->vp_integer;
2402 case PW_TYPE_SIGNED:
2403 compare = one->vp_signed - two->vp_signed;
2406 case PW_TYPE_INTEGER64:
2408 * Don't want integer overflow!
2410 if (one->vp_integer64 < two->vp_integer64) {
2412 } else if (one->vp_integer64 > two->vp_integer64) {
2417 case PW_TYPE_ETHERNET:
2418 compare = memcmp(&one->vp_ether, &two->vp_ether, sizeof(one->vp_ether));
2421 case PW_TYPE_IPV4_ADDR:
2422 compare = (int64_t) ntohl(one->vp_ipaddr) - (int64_t) ntohl(two->vp_ipaddr);
2425 case PW_TYPE_IPV6_ADDR:
2426 compare = memcmp(&one->vp_ipv6addr, &two->vp_ipv6addr, sizeof(one->vp_ipv6addr));
2429 case PW_TYPE_IPV6_PREFIX:
2430 compare = memcmp(&one->vp_ipv6prefix, &two->vp_ipv6prefix, sizeof(one->vp_ipv6prefix));
2433 case PW_TYPE_IPV4_PREFIX:
2434 compare = memcmp(&one->vp_ipv4prefix, &two->vp_ipv4prefix, sizeof(one->vp_ipv4prefix));
2438 compare = memcmp(&one->vp_ifid, &two->vp_ifid, sizeof(one->vp_ifid));
2442 * None of the types below should be in the REQUEST
2444 case PW_TYPE_INVALID: /* We should never see these */
2445 case PW_TYPE_IP_ADDR: /* This should of been converted into IPADDR/IPV6ADDR */
2446 case PW_TYPE_IP_PREFIX: /* This should of been converted into IPADDR/IPV6ADDR */
2448 case PW_TYPE_EXTENDED:
2449 case PW_TYPE_LONG_EXTENDED:
2452 case PW_TYPE_TIMEVAL:
2454 fr_assert(0); /* unknown type */
2458 * Do NOT add a default here, as new types are added
2459 * static analysis will warn us they're not handled
2465 } else if (compare < 0) {
2472 * We leverage the fact that IPv4 and IPv6 prefixes both
2473 * have the same format:
2475 * reserved, prefix-len, data...
2477 static int paircmp_op_cidr(FR_TOKEN op, int bytes,
2478 uint8_t one_net, uint8_t const *one,
2479 uint8_t two_net, uint8_t const *two)
2485 * Handle the case of netmasks being identical.
2487 if (one_net == two_net) {
2490 compare = memcmp(one, two, bytes);
2493 * If they're identical return true for
2496 if ((compare == 0) &&
2497 ((op == T_OP_CMP_EQ) ||
2504 * Everything else returns false.
2506 * 10/8 == 24/8 --> false
2507 * 10/8 <= 24/8 --> false
2508 * 10/8 >= 24/8 --> false
2514 * Netmasks are different. That limits the
2515 * possible results, based on the operator.
2525 case T_OP_LT: /* 192/8 < 192.168/16 --> false */
2526 if (one_net < two_net) {
2532 case T_OP_GT: /* 192/16 > 192.168/8 --> false */
2533 if (one_net > two_net) {
2542 if (one_net < two_net) {
2549 * Do the check byte by byte. If the bytes are
2550 * identical, it MAY be a match. If they're different,
2551 * it is NOT a match.
2556 * All leading bytes are identical.
2558 if (common == 0) return true;
2561 * Doing bitmasks takes more work.
2563 if (common < 8) break;
2565 if (one[i] != two[i]) return false;
2573 mask <<= (8 - common);
2577 if ((one[i] & mask) == ((two[i] & mask))) {
2584 /** Compare two attributes using an operator
2586 * @param[in] a the first attribute
2587 * @param[in] op the operator for comparison.
2588 * @param[in] b the second attribute
2589 * @return 1 if true, 0 if false, -1 on error.
2591 int8_t paircmp_op(VALUE_PAIR const *a, FR_TOKEN op, VALUE_PAIR const *b)
2595 if (!a || !b) return -1;
2597 switch (a->da->type) {
2598 case PW_TYPE_IPV4_ADDR:
2599 switch (b->da->type) {
2600 case PW_TYPE_IPV4_ADDR: /* IPv4 and IPv4 */
2603 case PW_TYPE_IPV4_PREFIX: /* IPv4 and IPv4 Prefix */
2604 return paircmp_op_cidr(op, 4, 32, (uint8_t const *) &a->vp_ipaddr,
2605 b->vp_ipv4prefix[1], (uint8_t const *) &b->vp_ipv4prefix + 2);
2608 fr_strerror_printf("Cannot compare IPv4 with IPv6 address");
2613 case PW_TYPE_IPV4_PREFIX: /* IPv4 and IPv4 Prefix */
2614 switch (b->da->type) {
2615 case PW_TYPE_IPV4_ADDR:
2616 return paircmp_op_cidr(op, 4, a->vp_ipv4prefix[1],
2617 (uint8_t const *) &a->vp_ipv4prefix + 2,
2618 32, (uint8_t const *) &b->vp_ipaddr);
2620 case PW_TYPE_IPV4_PREFIX: /* IPv4 Prefix and IPv4 Prefix */
2621 return paircmp_op_cidr(op, 4, a->vp_ipv4prefix[1],
2622 (uint8_t const *) &a->vp_ipv4prefix + 2,
2623 b->vp_ipv4prefix[1], (uint8_t const *) &b->vp_ipv4prefix + 2);
2626 fr_strerror_printf("Cannot compare IPv4 with IPv6 address");
2631 case PW_TYPE_IPV6_ADDR:
2632 switch (b->da->type) {
2633 case PW_TYPE_IPV6_ADDR: /* IPv6 and IPv6 */
2636 case PW_TYPE_IPV6_PREFIX: /* IPv6 and IPv6 Preifx */
2637 return paircmp_op_cidr(op, 16, 128, (uint8_t const *) &a->vp_ipv6addr,
2638 b->vp_ipv6prefix[1], (uint8_t const *) &b->vp_ipv6prefix + 2);
2642 fr_strerror_printf("Cannot compare IPv6 with IPv4 address");
2647 case PW_TYPE_IPV6_PREFIX:
2648 switch (b->da->type) {
2649 case PW_TYPE_IPV6_ADDR: /* IPv6 Prefix and IPv6 */
2650 return paircmp_op_cidr(op, 16, a->vp_ipv6prefix[1],
2651 (uint8_t const *) &a->vp_ipv6prefix + 2,
2652 128, (uint8_t const *) &b->vp_ipv6addr);
2654 case PW_TYPE_IPV6_PREFIX: /* IPv6 Prefix and IPv6 */
2655 return paircmp_op_cidr(op, 16, a->vp_ipv6prefix[1],
2656 (uint8_t const *) &a->vp_ipv6prefix + 2,
2657 b->vp_ipv6prefix[1], (uint8_t const *) &b->vp_ipv6prefix + 2);
2660 fr_strerror_printf("Cannot compare IPv6 with IPv4 address");
2667 compare = paircmp_value(a, b);
2668 if (compare < -1) { /* comparison error */
2674 * Now do the operator comparison.
2678 return (compare == 0);
2681 return (compare != 0);
2684 return (compare < 0);
2687 return (compare > 0);
2690 return (compare <= 0);
2693 return (compare >= 0);
2700 /** Compare two pairs, using the operator from "a"
2702 * i.e. given two attributes, it does:
2704 * (b->data) (a->operator) (a->data)
2706 * e.g. "foo" != "bar"
2708 * @param[in] a the first attribute
2709 * @param[in] b the second attribute
2710 * @return 1 if true, 0 if false, -1 on error.
2712 int8_t paircmp(VALUE_PAIR *a, VALUE_PAIR *b)
2717 if (b) VERIFY_VP(b);
2723 case T_OP_CMP_FALSE:
2727 * a is a regex, compile it, print b to a string,
2728 * and then do string comparisons.
2738 char buffer[MAX_STRING_LEN * 4 + 1];
2740 compare = regcomp(®, a->vp_strvalue, REG_EXTENDED);
2742 regerror(compare, ®, buffer, sizeof(buffer));
2743 fr_strerror_printf("Illegal regular expression in attribute: %s: %s",
2744 a->da->name, buffer);
2753 vp_prints_value(buffer, sizeof(buffer), b, 0);
2756 * Don't care about substring matches,
2759 compare = regexec(®, buffer, 0, NULL, 0);
2762 if (a->op == T_OP_REG_EQ) {
2763 return (compare == 0);
2766 return (compare != 0);
2770 default: /* we're OK */
2774 return paircmp_op(b, a->op, a);
2777 /** Determine equality of two lists
2779 * This is useful for comparing lists of attributes inserted into a binary tree.
2781 * @param a first list of VALUE_PAIRs.
2782 * @param b second list of VALUE_PAIRs.
2783 * @return -1 if a < b, 0 if the two lists are equal, 1 if a > b, -2 on error.
2785 int8_t pairlistcmp(VALUE_PAIR *a, VALUE_PAIR *b)
2787 vp_cursor_t a_cursor, b_cursor;
2788 VALUE_PAIR *a_p, *b_p;
2791 for (a_p = fr_cursor_init(&a_cursor, &a), b_p = fr_cursor_init(&b_cursor, &b);
2793 a_p = fr_cursor_next(&a_cursor), b_p = fr_cursor_next(&b_cursor)) {
2794 /* Same VP, no point doing expensive checks */
2799 if (a_p->da < b_p->da) {
2802 if (a_p->da > b_p->da) {
2806 if (a_p->tag < b_p->tag) {
2809 if (a_p->tag > b_p->tag) {
2813 ret = paircmp_value(a_p, b_p);
2815 fr_assert(ret >= -1); /* Comparison error */
2832 /** Set the type of the VALUE_PAIR value buffer to match it's DICT_ATTR
2834 * @param vp to fixup.
2836 static void pairtypeset(VALUE_PAIR *vp)
2838 if (!vp->data.ptr) return;
2840 switch(vp->da->type) {
2841 case PW_TYPE_OCTETS:
2843 talloc_set_type(vp->data.ptr, uint8_t);
2846 case PW_TYPE_STRING:
2847 talloc_set_type(vp->data.ptr, char);
2855 /** Copy data into an "octets" data type.
2857 * @param[in,out] vp to update
2858 * @param[in] src data to copy
2859 * @param[in] size of the data, may be 0 in which case previous value will be freed.
2861 void pairmemcpy(VALUE_PAIR *vp, uint8_t const *src, size_t size)
2863 uint8_t *p = NULL, *q;
2868 p = talloc_memdup(vp, src, size);
2870 talloc_set_type(p, uint8_t);
2873 memcpy(&q, &vp->vp_octets, sizeof(q));
2879 if (size > 0) pairtypeset(vp);
2882 /** Reparent an allocated octet buffer to a VALUE_PAIR
2884 * @param[in,out] vp to update
2885 * @param[in] src buffer to steal.
2887 void pairmemsteal(VALUE_PAIR *vp, uint8_t const *src)
2893 memcpy(&q, &vp->vp_octets, sizeof(q));
2896 vp->vp_octets = talloc_steal(vp, src);
2898 vp->length = talloc_array_length(vp->vp_strvalue);
2902 /** Reparent an allocated char buffer to a VALUE_PAIR
2904 * @param[in,out] vp to update
2905 * @param[in] src buffer to steal.
2907 void pairstrsteal(VALUE_PAIR *vp, char const *src)
2913 memcpy(&q, &vp->vp_octets, sizeof(q));
2916 vp->vp_strvalue = talloc_steal(vp, src);
2918 vp->length = talloc_array_length(vp->vp_strvalue) - 1;
2922 /** Copy data into an "string" data type.
2924 * @param[in,out] vp to update
2925 * @param[in] src data to copy
2927 void pairstrcpy(VALUE_PAIR *vp, char const *src)
2933 p = talloc_strdup(vp, src);
2937 memcpy(&q, &vp->vp_strvalue, sizeof(q));
2940 vp->vp_strvalue = p;
2942 vp->length = talloc_array_length(vp->vp_strvalue) - 1;
2946 /** Copy data into an "string" data type.
2948 * @param[in,out] vp to update.
2949 * @param[in] src data to copy.
2950 * @param[in] len of data to copy.
2952 void pairstrncpy(VALUE_PAIR *vp, char const *src, size_t len)
2958 p = talloc_array(vp, char, len + 1);
2961 memcpy(p, src, len); /* embdedded \0 safe */
2964 memcpy(&q, &vp->vp_strvalue, sizeof(q));
2967 vp->vp_strvalue = p;
2973 /** Print data into an "string" data type.
2975 * @param[in,out] vp to update
2976 * @param[in] fmt the format string
2978 void pairsprintf(VALUE_PAIR *vp, char const *fmt, ...)
2986 p = talloc_vasprintf(vp, fmt, ap);
2991 memcpy(&q, &vp->vp_strvalue, sizeof(q));
2994 vp->vp_strvalue = p;
2997 vp->length = talloc_array_length(vp->vp_strvalue) - 1;