


#include "first.h"








#include "array.h"




#include "buffer.h"








#include <string.h>




#include <stdlib.h>




#include <limits.h>








__attribute_cold__




static void array_extend(array * const a, uint32_t n) {




a>size += n;




a>data = realloc(a>data, sizeof(*a>data) * a>size);




a>sorted = realloc(a>sorted, sizeof(*a>sorted) * a>size);




force_assert(a>data);




force_assert(a>sorted);




memset(a>data+a>used, 0, (a>sizea>used)*sizeof(*a>data));




}








array *array_init(uint32_t n) {




array *a;








a = calloc(1, sizeof(*a));




force_assert(a);




if (n) array_extend(a, n);








return a;




}








void array_free_data(array * const a) {




if (a>sorted) free(a>sorted);




data_unset ** const data = a>data;




const uint32_t sz = a>size;




for (uint32_t i = 0; i < sz; ++i) {




if (data[i]) data[i]>fn>free(data[i]);




}




free(data);




a>data = NULL;




a>sorted = NULL;




a>used = 0;




a>size = 0;




}








void array_copy_array(array * const dst, const array * const src) {




array_free_data(dst);




if (0 == src>size) return;








dst>used = src>used;




dst>size = src>size;








dst>data = calloc(src>size, sizeof(*src>data));




force_assert(NULL != dst>data);




dst>sorted = malloc(sizeof(*src>sorted) * src>size);




force_assert(NULL != dst>sorted);




memcpy(dst>sorted, src>sorted, sizeof(*src>sorted) * src>used);




for (uint32_t i = 0; i < src>used; ++i) {




dst>data[i] = src>data[i]>fn>copy(src>data[i]);




}




}








void array_free(array * const a) {




if (!a) return;




array_free_data(a);




free(a);




}








void array_reset_data_strings(array * const a) {




if (!a) return;








data_string ** const data = (data_string **)a>data;




const uint32_t used = a>used;




a>used = 0;




for (uint32_t i = 0; i < used; ++i) {




data_string * const ds = data[i];




/*force_assert(ds>type == TYPE_STRING);*/




buffer * const k = &ds>key;




buffer * const v = &ds>value;




if (k>size > BUFFER_MAX_REUSE_SIZE) buffer_reset(k);




if (v>size > BUFFER_MAX_REUSE_SIZE) buffer_reset(v);




}




}








#if 0 /*(unused; see array_extract_element_klen())*/




data_unset *array_pop(array * const a) {




data_unset *du;








force_assert(a>used != 0);








a>used ;




du = a>data[a>used];




force_assert(a>sorted[a>used] == du); /* only works on "simple" lists */




a>data[a>used] = NULL;








return du;




}




#endif








__attribute_pure__




static int array_caseless_compare(const char * const a, const char * const b, const size_t len) {




for (size_t i = 0; i < len; ++i) {




unsigned int ca = ((unsigned char *)a)[i];




unsigned int cb = ((unsigned char *)b)[i];




if (ca == cb) continue;








/* always lowercase for transitive results */




if (ca >= 'A' && ca <= 'Z') ca = 32;




if (cb >= 'A' && cb <= 'Z') cb = 32;








if (ca == cb) continue;




return (int)(ca  cb);




}




return 0;




}








__attribute_pure__




static int array_keycmp(const char * const a, const size_t alen, const char * const b, const size_t blen) {




return alen < blen ? 1 : alen > blen ? 1 : array_caseless_compare(a, b, blen);




}








/* returns pos into a>sorted[] which contains copy of data (ptr) in a>data[]




* if pos >= 0, or returns pos1 if that is the position1 in a>sorted[]




* where the key needs to be inserted (1 to avoid 0)




*/




__attribute_hot__




__attribute_pure__




static int32_t array_get_index(const array * const a, const char * const k, const size_t klen) {




/* invariant: [lower1] < probe < [upper]




* invariant: 0 <= lower <= upper <= a>used




*/




uint32_t lower = 0, upper = a>used;




while (lower != upper) {




uint32_t probe = (lower + upper) / 2;




const buffer * const b = &a>sorted[probe]>key;




/* key is nonempty (0==b>used), though possibly blank (1==b>used),




* if inserted into keyvalue array */




/*force_assert(b && b>used);*/




int cmp = array_keycmp(k, klen, b>ptr, b>used1);




/*int cmp = array_keycmp(k, klen, CONST_BUF_LEN(b));*/




if (cmp < 0) /* key < [probe] */




upper = probe; /* still: lower <= upper */




else if (cmp > 0) /* key > [probe] */




lower = probe + 1; /* still: lower <= upper */




else /*(cmp == 0)*/ /* found */




return (int32_t)probe;




}




/* not found: [lower1] < key < [upper] = [lower] ==> insert at [lower] */




return (int)lower  1;




}








__attribute_hot__




data_unset *array_get_element_klen(const array * const a, const char *key, const size_t klen) {




const int32_t ipos = array_get_index(a, key, klen);




return ipos >= 0 ? a>sorted[ipos] : NULL;




}








/* nonconst (data_config *) for configparser.y (not array_get_element_klen())*/




data_unset *array_get_data_unset(const array * const a, const char *key, const size_t klen) {




const int32_t ipos = array_get_index(a, key, klen);




return ipos >= 0 ? a>sorted[ipos] : NULL;




}








data_unset *array_extract_element_klen(array * const a, const char *key, const size_t klen) {




const int32_t ipos = array_get_index(a, key, klen);




if (ipos < 0) return NULL;








/* remove entry from a>sorted: move everything after pos one step left */




data_unset * const entry = a>sorted[ipos];




const uint32_t last_ndx = a>used;




if (last_ndx != (uint32_t)ipos) {




data_unset ** const d = a>sorted + ipos;




memmove(d, d+1, (last_ndx  (uint32_t)ipos) * sizeof(*d));




}








if (entry != a>data[last_ndx]) {




/* walk a>data[] to find data ptr */




/* (not checking (ndx <= last_ndx) since entry must be in a>data[]) */




uint32_t ndx = 0;




while (entry != a>data[ndx]) ++ndx;




a>data[ndx] = a>data[last_ndx]; /* swap with last element */




}




a>data[last_ndx] = NULL;




return entry;




}








static data_unset *array_get_unused_element(array * const a, const data_type_t t) {




/* After initial startup and config, most array usage is of homogeneous types




* and arrays are cleared once per request, so check only the first unused




* element to see if it can be reused */




#if 1




data_unset * const du = (a>used < a>size) ? a>data[a>used] : NULL;




if (NULL != du && du>type == t) {




a>data[a>used] = NULL;/* make empty slot at a>used for next insert */




return du;




}




return NULL;




#else




data_unset ** const data = a>data;




for (uint32_t i = a>used, sz = a>size; i < sz; ++i) {




if (data[i] && data[i]>type == t) {




data_unset * const ds = data[i];








/* make empty slot at a>used for next insert */




data[i] = data[a>used];




data[a>used] = NULL;








return ds;




}




}








return NULL;




#endif




}








static void array_insert_data_at_pos(array * const a, data_unset * const entry, const uint32_t pos) {




/* This data structure should not be used for nearly so many entries */




force_assert(a>used + 1 <= INT32_MAX);








if (a>size == a>used) {




array_extend(a, 16);




}








const uint32_t ndx = a>used++;




data_unset * const prev = a>data[ndx];




a>data[ndx] = entry;








/* move everything one step to the right */




if (pos != ndx) {




data_unset ** const d = a>sorted + pos;




memmove(d+1, d, (ndx  pos) * sizeof(*a>sorted));




}




a>sorted[pos] = entry;








if (prev) prev>fn>free(prev); /* free prior data, if any, from slot */




}








static data_integer * array_insert_integer_at_pos(array * const a, const uint32_t pos) {




#if 0 /*(not currently used by lighttpd in way that reuse would occur)*/




data_integer *di = (data_integer *)array_get_unused_element(a,TYPE_INTEGER);




if (NULL == di) di = data_integer_init();




#else




data_integer * const di = data_integer_init();




#endif




array_insert_data_at_pos(a, (data_unset *)di, pos);




return di;




}








static data_string * array_insert_string_at_pos(array * const a, const uint32_t pos) {




data_string *ds = (data_string *)array_get_unused_element(a, TYPE_STRING);




if (NULL == ds) ds = data_string_init();




array_insert_data_at_pos(a, (data_unset *)ds, pos);




return ds;




}








int * array_get_int_ptr(array * const a, const char * const k, const size_t klen) {




int32_t ipos = array_get_index(a, k, klen);




if (ipos >= 0) return &((data_integer *)a>sorted[ipos])>value;








data_integer * const di =array_insert_integer_at_pos(a,(uint32_t)(ipos1));




buffer_copy_string_len(&di>key, k, klen);




di>value = 0;




return &di>value;




}








buffer * array_get_buf_ptr(array * const a, const char * const k, const size_t klen) {




int32_t ipos = array_get_index(a, k, klen);




if (ipos >= 0) return &((data_string *)a>sorted[ipos])>value;








data_string * const ds = array_insert_string_at_pos(a, (uint32_t)(ipos1));




buffer_copy_string_len(&ds>key, k, klen);




buffer_clear(&ds>value);




return &ds>value;




}








void array_insert_value(array * const a, const char * const v, const size_t vlen) {




data_string * const ds = array_insert_string_at_pos(a, a>used);




buffer_clear(&ds>key);




buffer_copy_string_len(&ds>value, v, vlen);




}








/* if entry already exists return pointer to existing entry, otherwise insert entry and return NULL */




__attribute_cold__




static data_unset **array_find_or_insert(array * const a, data_unset * const entry) {




force_assert(NULL != entry);








/* push value onto end of array if there is no key */




if (buffer_is_empty(&entry>key)) {




array_insert_data_at_pos(a, entry, a>used);




return NULL;




}








/* try to find the entry */




const int32_t ipos = array_get_index(a, CONST_BUF_LEN(&entry>key));




if (ipos >= 0) return &a>sorted[ipos];








array_insert_data_at_pos(a, entry, (uint32_t)(ipos  1));




return NULL;




}








/* replace or insert data (free existing entry) */




void array_replace(array * const a, data_unset * const entry) {




if (NULL == array_find_or_insert(a, entry)) return;








/* find the entry (array_find_or_insert() returned nonNULL) */




const int32_t ipos = array_get_index(a, CONST_BUF_LEN(&entry>key));




force_assert(ipos >= 0);




data_unset *old = a>sorted[ipos];




force_assert(old != entry);




a>sorted[ipos] = entry;








uint32_t i = 0;




while (i < a>used && a>data[i] != old) ++i;




force_assert(i != a>used);




a>data[i] = entry;








old>fn>free(old);




}








void array_insert_unique(array * const a, data_unset * const entry) {




data_unset **old;








if (NULL != (old = array_find_or_insert(a, entry))) {




force_assert((*old)>type == entry>type);




entry>fn>insert_dup(*old, entry);




}




}








int array_is_vlist(const array * const a) {




for (uint32_t i = 0; i < a>used; ++i) {




data_unset *du = a>data[i];




if (!buffer_is_empty(&du>key)  du>type != TYPE_STRING) return 0;




}




return 1;




}








int array_is_kvany(const array * const a) {




for (uint32_t i = 0; i < a>used; ++i) {




data_unset *du = a>data[i];




if (buffer_is_empty(&du>key)) return 0;




}




return 1;




}








int array_is_kvarray(const array * const a) {




for (uint32_t i = 0; i < a>used; ++i) {




data_unset *du = a>data[i];




if (buffer_is_empty(&du>key)  du>type != TYPE_ARRAY) return 0;




}




return 1;




}








int array_is_kvstring(const array * const a) {




for (uint32_t i = 0; i < a>used; ++i) {




data_unset *du = a>data[i];




if (buffer_is_empty(&du>key)  du>type != TYPE_STRING) return 0;




}




return 1;




}








/* array_match_*() routines follow very similar pattern, but operate on slightly




* different data: array key/value, prefix/suffix match, caseinsensitive or not




* While these could be combined into fewer routines with flags to modify the




* behavior, the interface distinctions are useful to add clarity to the code,




* and the specialized routines run slightly faster */








data_unset *




array_match_key_prefix_klen (const array * const a, const char * const s, const size_t slen)




{




for (uint32_t i = 0; i < a>used; ++i) {




const buffer * const key = &a>data[i]>key;




const size_t klen = buffer_string_length(key);




if (klen <= slen && 0 == memcmp(s, key>ptr, klen))




return a>data[i];




}




return NULL;




}








data_unset *




array_match_key_prefix_nc_klen (const array * const a, const char * const s, const size_t slen)




{




for (uint32_t i = 0; i < a>used; ++i) {




const buffer * const key = &a>data[i]>key;




const size_t klen = buffer_string_length(key);




if (klen <= slen && buffer_eq_icase_ssn(s, key>ptr, klen))




return a>data[i];




}




return NULL;




}








data_unset *




array_match_key_prefix (const array * const a, const buffer * const b)




{




#ifdef __clang_analyzer__




force_assert(b);




#endif




return array_match_key_prefix_klen(a, CONST_BUF_LEN(b));




}








data_unset *




array_match_key_prefix_nc (const array * const a, const buffer * const b)




{




return array_match_key_prefix_nc_klen(a, CONST_BUF_LEN(b));




}








const buffer *




array_match_value_prefix (const array * const a, const buffer * const b)




{




const size_t blen = buffer_string_length(b);








for (uint32_t i = 0; i < a>used; ++i) {




const buffer * const value = &((data_string *)a>data[i])>value;




const size_t vlen = buffer_string_length(value);




if (vlen <= blen && 0 == memcmp(b>ptr, value>ptr, vlen))




return value;




}




return NULL;




}








const buffer *




array_match_value_prefix_nc (const array * const a, const buffer * const b)




{




const size_t blen = buffer_string_length(b);








for (uint32_t i = 0; i < a>used; ++i) {




const buffer * const value = &((data_string *)a>data[i])>value;




const size_t vlen = buffer_string_length(value);




if (vlen <= blen && buffer_eq_icase_ssn(b>ptr, value>ptr, vlen))




return value;




}




return NULL;




}








data_unset *




array_match_key_suffix (const array * const a, const buffer * const b)




{




const size_t blen = buffer_string_length(b);




const char * const end = b>ptr + blen;








for (uint32_t i = 0; i < a>used; ++i) {




const buffer * const key = &a>data[i]>key;




const size_t klen = buffer_string_length(key);




if (klen <= blen && 0 == memcmp(end  klen, key>ptr, klen))




return a>data[i];




}




return NULL;




}








data_unset *




array_match_key_suffix_nc (const array * const a, const buffer * const b)




{




const size_t blen = buffer_string_length(b);




const char * const end = b>ptr + blen;








for (uint32_t i = 0; i < a>used; ++i) {




const buffer * const key = &a>data[i]>key;




const size_t klen = buffer_string_length(key);




if (klen <= blen && buffer_eq_icase_ssn(end  klen, key>ptr, klen))




return a>data[i];




}




return NULL;




}








const buffer *




array_match_value_suffix (const array * const a, const buffer * const b)




{




const size_t blen = buffer_string_length(b);




const char * const end = b>ptr + blen;








for (uint32_t i = 0; i < a>used; ++i) {




const buffer * const value = &((data_string *)a>data[i])>value;




const size_t vlen = buffer_string_length(value);




if (vlen <= blen && 0 == memcmp(end  vlen, value>ptr, vlen))




return value;




}




return NULL;




}








const buffer *




array_match_value_suffix_nc (const array * const a, const buffer * const b)




{




const size_t blen = buffer_string_length(b);




const char * const end = b>ptr + blen;








for (uint32_t i = 0; i < a>used; ++i) {




const buffer * const value = &((data_string *)a>data[i])>value;




const size_t vlen = buffer_string_length(value);




if (vlen <= blen && buffer_eq_icase_ssn(end  vlen, value>ptr, vlen))




return value;




}




return NULL;




}








data_unset *




array_match_path_or_ext (const array * const a, const buffer * const b)




{




const size_t blen = buffer_string_length(b);








for (uint32_t i = 0; i < a>used; ++i) {




/* check extension in the form "^/path" or ".ext$" */




const buffer * const key = &a>data[i]>key;




const size_t klen = buffer_string_length(key);




if (klen <= blen




&& 0 == memcmp((*(key>ptr) == '/' ? b>ptr : b>ptr + blen  klen),




key>ptr, klen))




return a>data[i];




}




return NULL;




}
























#include <stdio.h>








void array_print_indent(int depth) {




int i;




for (i = 0; i < depth; i ++) {




fprintf(stdout, " ");




}




}








size_t array_get_max_key_length(const array * const a) {




size_t maxlen = 0;




for (uint32_t i = 0; i < a>used; ++i) {




const buffer * const k = &a>data[i]>key;




size_t len = buffer_string_length(k);








if (len > maxlen) {




maxlen = len;




}




}




return maxlen;




}








int array_print(const array * const a, int depth) {




uint32_t i;




size_t maxlen;




int oneline = 1;








if (a>used > 5) {




oneline = 0;




}




for (i = 0; i < a>used && oneline; i++) {




data_unset *du = a>data[i];




if (!buffer_is_empty(&du>key)) {




oneline = 0;




break;




}




switch (du>type) {




case TYPE_INTEGER:




case TYPE_STRING:




break;




default:




oneline = 0;




break;




}




}




if (oneline) {




fprintf(stdout, "(");




for (i = 0; i < a>used; i++) {




data_unset *du = a>data[i];




if (i != 0) {




fprintf(stdout, ", ");




}




du>fn>print(du, depth + 1);




}




fprintf(stdout, ")");




return 0;




}








maxlen = array_get_max_key_length(a);




fprintf(stdout, "(\n");




for (i = 0; i < a>used; i++) {




data_unset *du = a>data[i];




array_print_indent(depth + 1);




if (!buffer_is_empty(&du>key)) {




int j;







