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-rw-r--r--extras/filters/filter-rspamd/json.c1011
1 files changed, 1011 insertions, 0 deletions
diff --git a/extras/filters/filter-rspamd/json.c b/extras/filters/filter-rspamd/json.c
new file mode 100644
index 0000000..ea975e8
--- /dev/null
+++ b/extras/filters/filter-rspamd/json.c
@@ -0,0 +1,1011 @@
+/* vim: set et ts=3 sw=3 sts=3 ft=c:
+ *
+ * Copyright (C) 2012, 2013, 2014 James McLaughlin et al. All rights reserved.
+ * https://github.com/udp/json-parser
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "json.h"
+
+#ifdef _MSC_VER
+ #ifndef _CRT_SECURE_NO_WARNINGS
+ #define _CRT_SECURE_NO_WARNINGS
+ #endif
+#endif
+
+const struct _json_value json_value_none;
+
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <math.h>
+
+typedef unsigned int json_uchar;
+
+static unsigned char hex_value (json_char c)
+{
+ if (isdigit(c))
+ return c - '0';
+
+ switch (c) {
+ case 'a': case 'A': return 0x0A;
+ case 'b': case 'B': return 0x0B;
+ case 'c': case 'C': return 0x0C;
+ case 'd': case 'D': return 0x0D;
+ case 'e': case 'E': return 0x0E;
+ case 'f': case 'F': return 0x0F;
+ default: return 0xFF;
+ }
+}
+
+typedef struct
+{
+ unsigned long used_memory;
+
+ unsigned int uint_max;
+ unsigned long ulong_max;
+
+ json_settings settings;
+ int first_pass;
+
+ const json_char * ptr;
+ unsigned int cur_line, cur_col;
+
+} json_state;
+
+static void * default_alloc (size_t size, int zero, void * user_data)
+{
+ return zero ? calloc (1, size) : malloc (size);
+}
+
+static void default_free (void * ptr, void * user_data)
+{
+ free (ptr);
+}
+
+static void * json_alloc (json_state * state, unsigned long size, int zero)
+{
+ if ((state->ulong_max - state->used_memory) < size)
+ return 0;
+
+ if (state->settings.max_memory
+ && (state->used_memory += size) > state->settings.max_memory)
+ {
+ return 0;
+ }
+
+ return state->settings.mem_alloc (size, zero, state->settings.user_data);
+}
+
+static int new_value (json_state * state,
+ json_value ** top, json_value ** root, json_value ** alloc,
+ json_type type)
+{
+ json_value * value;
+ int values_size;
+
+ if (!state->first_pass)
+ {
+ value = *top = *alloc;
+ *alloc = (*alloc)->_reserved.next_alloc;
+
+ if (!*root)
+ *root = value;
+
+ switch (value->type)
+ {
+ case json_array:
+
+ if (value->u.array.length == 0)
+ break;
+
+ if (! (value->u.array.values = (json_value **) json_alloc
+ (state, value->u.array.length * sizeof (json_value *), 0)) )
+ {
+ return 0;
+ }
+
+ value->u.array.length = 0;
+ break;
+
+ case json_object:
+
+ if (value->u.object.length == 0)
+ break;
+
+ values_size = sizeof (*value->u.object.values) * value->u.object.length;
+
+ if (! (value->u.object.values = (json_object_entry *) json_alloc
+ (state, values_size + ((unsigned long) value->u.object.values), 0)) )
+ {
+ return 0;
+ }
+
+ value->_reserved.object_mem = (*(char **) &value->u.object.values) + values_size;
+
+ value->u.object.length = 0;
+ break;
+
+ case json_string:
+
+ if (! (value->u.string.ptr = (json_char *) json_alloc
+ (state, (value->u.string.length + 1) * sizeof (json_char), 0)) )
+ {
+ return 0;
+ }
+
+ value->u.string.length = 0;
+ break;
+
+ default:
+ break;
+ };
+
+ return 1;
+ }
+
+ if (! (value = (json_value *) json_alloc
+ (state, sizeof (json_value) + state->settings.value_extra, 1)))
+ {
+ return 0;
+ }
+
+ if (!*root)
+ *root = value;
+
+ value->type = type;
+ value->parent = *top;
+
+ #ifdef JSON_TRACK_SOURCE
+ value->line = state->cur_line;
+ value->col = state->cur_col;
+ #endif
+
+ if (*alloc)
+ (*alloc)->_reserved.next_alloc = value;
+
+ *alloc = *top = value;
+
+ return 1;
+}
+
+#define whitespace \
+ case '\n': ++ state.cur_line; state.cur_col = 0; \
+ case ' ': case '\t': case '\r'
+
+#define string_add(b) \
+ do { if (!state.first_pass) string [string_length] = b; ++ string_length; } while (0);
+
+#define line_and_col \
+ state.cur_line, state.cur_col
+
+static const long
+ flag_next = 1 << 0,
+ flag_reproc = 1 << 1,
+ flag_need_comma = 1 << 2,
+ flag_seek_value = 1 << 3,
+ flag_escaped = 1 << 4,
+ flag_string = 1 << 5,
+ flag_need_colon = 1 << 6,
+ flag_done = 1 << 7,
+ flag_num_negative = 1 << 8,
+ flag_num_zero = 1 << 9,
+ flag_num_e = 1 << 10,
+ flag_num_e_got_sign = 1 << 11,
+ flag_num_e_negative = 1 << 12,
+ flag_line_comment = 1 << 13,
+ flag_block_comment = 1 << 14;
+
+json_value * json_parse_ex (json_settings * settings,
+ const json_char * json,
+ size_t length,
+ char * error_buf)
+{
+ json_char error [json_error_max];
+ const json_char * end;
+ json_value * top, * root, * alloc = 0;
+ json_state state = { 0 };
+ long flags;
+ long num_digits = 0, num_e = 0;
+ json_int_t num_fraction = 0;
+
+ /* Skip UTF-8 BOM
+ */
+ if (length >= 3 && ((unsigned char) json [0]) == 0xEF
+ && ((unsigned char) json [1]) == 0xBB
+ && ((unsigned char) json [2]) == 0xBF)
+ {
+ json += 3;
+ length -= 3;
+ }
+
+ error[0] = '\0';
+ end = (json + length);
+
+ memcpy (&state.settings, settings, sizeof (json_settings));
+
+ if (!state.settings.mem_alloc)
+ state.settings.mem_alloc = default_alloc;
+
+ if (!state.settings.mem_free)
+ state.settings.mem_free = default_free;
+
+ memset (&state.uint_max, 0xFF, sizeof (state.uint_max));
+ memset (&state.ulong_max, 0xFF, sizeof (state.ulong_max));
+
+ state.uint_max -= 8; /* limit of how much can be added before next check */
+ state.ulong_max -= 8;
+
+ for (state.first_pass = 1; state.first_pass >= 0; -- state.first_pass)
+ {
+ json_uchar uchar;
+ unsigned char uc_b1, uc_b2, uc_b3, uc_b4;
+ json_char * string = 0;
+ unsigned int string_length = 0;
+
+ top = root = 0;
+ flags = flag_seek_value;
+
+ state.cur_line = 1;
+
+ for (state.ptr = json ;; ++ state.ptr)
+ {
+ json_char b = (state.ptr == end ? 0 : *state.ptr);
+
+ if (flags & flag_string)
+ {
+ if (!b)
+ { sprintf (error, "Unexpected EOF in string (at %d:%d)", line_and_col);
+ goto e_failed;
+ }
+
+ if (string_length > state.uint_max)
+ goto e_overflow;
+
+ if (flags & flag_escaped)
+ {
+ flags &= ~ flag_escaped;
+
+ switch (b)
+ {
+ case 'b': string_add ('\b'); break;
+ case 'f': string_add ('\f'); break;
+ case 'n': string_add ('\n'); break;
+ case 'r': string_add ('\r'); break;
+ case 't': string_add ('\t'); break;
+ case 'u':
+
+ if (end - state.ptr < 4 ||
+ (uc_b1 = hex_value (*++ state.ptr)) == 0xFF ||
+ (uc_b2 = hex_value (*++ state.ptr)) == 0xFF ||
+ (uc_b3 = hex_value (*++ state.ptr)) == 0xFF ||
+ (uc_b4 = hex_value (*++ state.ptr)) == 0xFF)
+ {
+ sprintf (error, "Invalid character value `%c` (at %d:%d)", b, line_and_col);
+ goto e_failed;
+ }
+
+ uc_b1 = (uc_b1 << 4) | uc_b2;
+ uc_b2 = (uc_b3 << 4) | uc_b4;
+ uchar = (uc_b1 << 8) | uc_b2;
+
+ if ((uchar & 0xF800) == 0xD800) {
+ json_uchar uchar2;
+
+ if (end - state.ptr < 6 || (*++ state.ptr) != '\\' || (*++ state.ptr) != 'u' ||
+ (uc_b1 = hex_value (*++ state.ptr)) == 0xFF ||
+ (uc_b2 = hex_value (*++ state.ptr)) == 0xFF ||
+ (uc_b3 = hex_value (*++ state.ptr)) == 0xFF ||
+ (uc_b4 = hex_value (*++ state.ptr)) == 0xFF)
+ {
+ sprintf (error, "Invalid character value `%c` (at %d:%d)", b, line_and_col);
+ goto e_failed;
+ }
+
+ uc_b1 = (uc_b1 << 4) | uc_b2;
+ uc_b2 = (uc_b3 << 4) | uc_b4;
+ uchar2 = (uc_b1 << 8) | uc_b2;
+
+ uchar = 0x010000 | ((uchar & 0x3FF) << 10) | (uchar2 & 0x3FF);
+ }
+
+ if (sizeof (json_char) >= sizeof (json_uchar) || (uchar <= 0x7F))
+ {
+ string_add ((json_char) uchar);
+ break;
+ }
+
+ if (uchar <= 0x7FF)
+ {
+ if (state.first_pass)
+ string_length += 2;
+ else
+ { string [string_length ++] = 0xC0 | (uchar >> 6);
+ string [string_length ++] = 0x80 | (uchar & 0x3F);
+ }
+
+ break;
+ }
+
+ if (uchar <= 0xFFFF) {
+ if (state.first_pass)
+ string_length += 3;
+ else
+ { string [string_length ++] = 0xE0 | (uchar >> 12);
+ string [string_length ++] = 0x80 | ((uchar >> 6) & 0x3F);
+ string [string_length ++] = 0x80 | (uchar & 0x3F);
+ }
+
+ break;
+ }
+
+ if (state.first_pass)
+ string_length += 4;
+ else
+ { string [string_length ++] = 0xF0 | (uchar >> 18);
+ string [string_length ++] = 0x80 | ((uchar >> 12) & 0x3F);
+ string [string_length ++] = 0x80 | ((uchar >> 6) & 0x3F);
+ string [string_length ++] = 0x80 | (uchar & 0x3F);
+ }
+
+ break;
+
+ default:
+ string_add (b);
+ };
+
+ continue;
+ }
+
+ if (b == '\\')
+ {
+ flags |= flag_escaped;
+ continue;
+ }
+
+ if (b == '"')
+ {
+ if (!state.first_pass)
+ string [string_length] = 0;
+
+ flags &= ~ flag_string;
+ string = 0;
+
+ switch (top->type)
+ {
+ case json_string:
+
+ top->u.string.length = string_length;
+ flags |= flag_next;
+
+ break;
+
+ case json_object:
+
+ if (state.first_pass)
+ (*(json_char **) &top->u.object.values) += string_length + 1;
+ else
+ {
+ top->u.object.values [top->u.object.length].name
+ = (json_char *) top->_reserved.object_mem;
+
+ top->u.object.values [top->u.object.length].name_length
+ = string_length;
+
+ (*(json_char **) &top->_reserved.object_mem) += string_length + 1;
+ }
+
+ flags |= flag_seek_value | flag_need_colon;
+ continue;
+
+ default:
+ break;
+ };
+ }
+ else
+ {
+ string_add (b);
+ continue;
+ }
+ }
+
+ if (state.settings.settings & json_enable_comments)
+ {
+ if (flags & (flag_line_comment | flag_block_comment))
+ {
+ if (flags & flag_line_comment)
+ {
+ if (b == '\r' || b == '\n' || !b)
+ {
+ flags &= ~ flag_line_comment;
+ -- state.ptr; /* so null can be reproc'd */
+ }
+
+ continue;
+ }
+
+ if (flags & flag_block_comment)
+ {
+ if (!b)
+ { sprintf (error, "%d:%d: Unexpected EOF in block comment", line_and_col);
+ goto e_failed;
+ }
+
+ if (b == '*' && state.ptr < (end - 1) && state.ptr [1] == '/')
+ {
+ flags &= ~ flag_block_comment;
+ ++ state.ptr; /* skip closing sequence */
+ }
+
+ continue;
+ }
+ }
+ else if (b == '/')
+ {
+ if (! (flags & (flag_seek_value | flag_done)) && top->type != json_object)
+ { sprintf (error, "%d:%d: Comment not allowed here", line_and_col);
+ goto e_failed;
+ }
+
+ if (++ state.ptr == end)
+ { sprintf (error, "%d:%d: EOF unexpected", line_and_col);
+ goto e_failed;
+ }
+
+ switch (b = *state.ptr)
+ {
+ case '/':
+ flags |= flag_line_comment;
+ continue;
+
+ case '*':
+ flags |= flag_block_comment;
+ continue;
+
+ default:
+ sprintf (error, "%d:%d: Unexpected `%c` in comment opening sequence", line_and_col, b);
+ goto e_failed;
+ };
+ }
+ }
+
+ if (flags & flag_done)
+ {
+ if (!b)
+ break;
+
+ switch (b)
+ {
+ whitespace:
+ continue;
+
+ default:
+
+ sprintf (error, "%d:%d: Trailing garbage: `%c`",
+ state.cur_line, state.cur_col, b);
+
+ goto e_failed;
+ };
+ }
+
+ if (flags & flag_seek_value)
+ {
+ switch (b)
+ {
+ whitespace:
+ continue;
+
+ case ']':
+
+ if (top && top->type == json_array)
+ flags = (flags & ~ (flag_need_comma | flag_seek_value)) | flag_next;
+ else
+ { sprintf (error, "%d:%d: Unexpected ]", line_and_col);
+ goto e_failed;
+ }
+
+ break;
+
+ default:
+
+ if (flags & flag_need_comma)
+ {
+ if (b == ',')
+ { flags &= ~ flag_need_comma;
+ continue;
+ }
+ else
+ {
+ sprintf (error, "%d:%d: Expected , before %c",
+ state.cur_line, state.cur_col, b);
+
+ goto e_failed;
+ }
+ }
+
+ if (flags & flag_need_colon)
+ {
+ if (b == ':')
+ { flags &= ~ flag_need_colon;
+ continue;
+ }
+ else
+ {
+ sprintf (error, "%d:%d: Expected : before %c",
+ state.cur_line, state.cur_col, b);
+
+ goto e_failed;
+ }
+ }
+
+ flags &= ~ flag_seek_value;
+
+ switch (b)
+ {
+ case '{':
+
+ if (!new_value (&state, &top, &root, &alloc, json_object))
+ goto e_alloc_failure;
+
+ continue;
+
+ case '[':
+
+ if (!new_value (&state, &top, &root, &alloc, json_array))
+ goto e_alloc_failure;
+
+ flags |= flag_seek_value;
+ continue;
+
+ case '"':
+
+ if (!new_value (&state, &top, &root, &alloc, json_string))
+ goto e_alloc_failure;
+
+ flags |= flag_string;
+
+ string = top->u.string.ptr;
+ string_length = 0;
+
+ continue;
+
+ case 't':
+
+ if ((end - state.ptr) < 3 || *(++ state.ptr) != 'r' ||
+ *(++ state.ptr) != 'u' || *(++ state.ptr) != 'e')
+ {
+ goto e_unknown_value;
+ }
+
+ if (!new_value (&state, &top, &root, &alloc, json_boolean))
+ goto e_alloc_failure;
+
+ top->u.boolean = 1;
+
+ flags |= flag_next;
+ break;
+
+ case 'f':
+
+ if ((end - state.ptr) < 4 || *(++ state.ptr) != 'a' ||
+ *(++ state.ptr) != 'l' || *(++ state.ptr) != 's' ||
+ *(++ state.ptr) != 'e')
+ {
+ goto e_unknown_value;
+ }
+
+ if (!new_value (&state, &top, &root, &alloc, json_boolean))
+ goto e_alloc_failure;
+
+ flags |= flag_next;
+ break;
+
+ case 'n':
+
+ if ((end - state.ptr) < 3 || *(++ state.ptr) != 'u' ||
+ *(++ state.ptr) != 'l' || *(++ state.ptr) != 'l')
+ {
+ goto e_unknown_value;
+ }
+
+ if (!new_value (&state, &top, &root, &alloc, json_null))
+ goto e_alloc_failure;
+
+ flags |= flag_next;
+ break;
+
+ default:
+
+ if (isdigit (b) || b == '-')
+ {
+ if (!new_value (&state, &top, &root, &alloc, json_integer))
+ goto e_alloc_failure;
+
+ if (!state.first_pass)
+ {
+ while (isdigit (b) || b == '+' || b == '-'
+ || b == 'e' || b == 'E' || b == '.')
+ {
+ if ( (++ state.ptr) == end)
+ {
+ b = 0;
+ break;
+ }
+
+ b = *state.ptr;
+ }
+
+ flags |= flag_next | flag_reproc;
+ break;
+ }
+
+ flags &= ~ (flag_num_negative | flag_num_e |
+ flag_num_e_got_sign | flag_num_e_negative |
+ flag_num_zero);
+
+ num_digits = 0;
+ num_fraction = 0;
+ num_e = 0;
+
+ if (b != '-')
+ {
+ flags |= flag_reproc;
+ break;
+ }
+
+ flags |= flag_num_negative;
+ continue;
+ }
+ else
+ { sprintf (error, "%d:%d: Unexpected %c when seeking value", line_and_col, b);
+ goto e_failed;
+ }
+ };
+ };
+ }
+ else
+ {
+ switch (top->type)
+ {
+ case json_object:
+
+ switch (b)
+ {
+ whitespace:
+ continue;
+
+ case '"':
+
+ if (flags & flag_need_comma)
+ { sprintf (error, "%d:%d: Expected , before \"", line_and_col);
+ goto e_failed;
+ }
+
+ flags |= flag_string;
+
+ string = (json_char *) top->_reserved.object_mem;
+ string_length = 0;
+
+ break;
+
+ case '}':
+
+ flags = (flags & ~ flag_need_comma) | flag_next;
+ break;
+
+ case ',':
+
+ if (flags & flag_need_comma)
+ {
+ flags &= ~ flag_need_comma;
+ break;
+ }
+
+ default:
+ sprintf (error, "%d:%d: Unexpected `%c` in object", line_and_col, b);
+ goto e_failed;
+ };
+
+ break;
+
+ case json_integer:
+ case json_double:
+
+ if (isdigit (b))
+ {
+ ++ num_digits;
+
+ if (top->type == json_integer || flags & flag_num_e)
+ {
+ if (! (flags & flag_num_e))
+ {
+ if (flags & flag_num_zero)
+ { sprintf (error, "%d:%d: Unexpected `0` before `%c`", line_and_col, b);
+ goto e_failed;
+ }
+
+ if (num_digits == 1 && b == '0')
+ flags |= flag_num_zero;
+ }
+ else
+ {
+ flags |= flag_num_e_got_sign;
+ num_e = (num_e * 10) + (b - '0');
+ continue;
+ }
+
+ top->u.integer = (top->u.integer * 10) + (b - '0');
+ continue;
+ }
+
+ num_fraction = (num_fraction * 10) + (b - '0');
+ continue;
+ }
+
+ if (b == '+' || b == '-')
+ {
+ if ( (flags & flag_num_e) && !(flags & flag_num_e_got_sign))
+ {
+ flags |= flag_num_e_got_sign;
+
+ if (b == '-')
+ flags |= flag_num_e_negative;
+
+ continue;
+ }
+ }
+ else if (b == '.' && top->type == json_integer)
+ {
+ if (!num_digits)
+ { sprintf (error, "%d:%d: Expected digit before `.`", line_and_col);
+ goto e_failed;
+ }
+
+ top->type = json_double;
+ top->u.dbl = (double) top->u.integer;
+
+ num_digits = 0;
+ continue;
+ }
+
+ if (! (flags & flag_num_e))
+ {
+ if (top->type == json_double)
+ {
+ if (!num_digits)
+ { sprintf (error, "%d:%d: Expected digit after `.`", line_and_col);
+ goto e_failed;
+ }
+
+ top->u.dbl += ((double) num_fraction) / (pow (10.0, (double) num_digits));
+ }
+
+ if (b == 'e' || b == 'E')
+ {
+ flags |= flag_num_e;
+
+ if (top->type == json_integer)
+ {
+ top->type = json_double;
+ top->u.dbl = (double) top->u.integer;
+ }
+
+ num_digits = 0;
+ flags &= ~ flag_num_zero;
+
+ continue;
+ }
+ }
+ else
+ {
+ if (!num_digits)
+ { sprintf (error, "%d:%d: Expected digit after `e`", line_and_col);
+ goto e_failed;
+ }
+
+ top->u.dbl *= pow (10.0, (double)
+ (flags & flag_num_e_negative ? - num_e : num_e));
+ }
+
+ if (flags & flag_num_negative)
+ {
+ if (top->type == json_integer)
+ top->u.integer = - top->u.integer;
+ else
+ top->u.dbl = - top->u.dbl;
+ }
+
+ flags |= flag_next | flag_reproc;
+ break;
+
+ default:
+ break;
+ };
+ }
+
+ if (flags & flag_reproc)
+ {
+ flags &= ~ flag_reproc;
+ -- state.ptr;
+ }
+
+ if (flags & flag_next)
+ {
+ flags = (flags & ~ flag_next) | flag_need_comma;
+
+ if (!top->parent)
+ {
+ /* root value done */
+
+ flags |= flag_done;
+ continue;
+ }
+
+ if (top->parent->type == json_array)
+ flags |= flag_seek_value;
+
+ if (!state.first_pass)
+ {
+ json_value * parent = top->parent;
+
+ switch (parent->type)
+ {
+ case json_object:
+
+ parent->u.object.values
+ [parent->u.object.length].value = top;
+
+ break;
+
+ case json_array:
+
+ parent->u.array.values
+ [parent->u.array.length] = top;
+
+ break;
+
+ default:
+ break;
+ };
+ }
+
+ if ( (++ top->parent->u.array.length) > state.uint_max)
+ goto e_overflow;
+
+ top = top->parent;
+
+ continue;
+ }
+ }
+
+ alloc = root;
+ }
+
+ return root;
+
+e_unknown_value:
+
+ sprintf (error, "%d:%d: Unknown value", line_and_col);
+ goto e_failed;
+
+e_alloc_failure:
+
+ strlcpy (error, "Memory allocation failure", sizeof error);
+ goto e_failed;
+
+e_overflow:
+
+ sprintf (error, "%d:%d: Too long (caught overflow)", line_and_col);
+ goto e_failed;
+
+e_failed:
+
+ if (error_buf)
+ {
+ if (*error)
+ strcpy (error_buf, error);
+ else
+ strcpy (error_buf, "Unknown error");
+ }
+
+ if (state.first_pass)
+ alloc = root;
+
+ while (alloc)
+ {
+ top = alloc->_reserved.next_alloc;
+ state.settings.mem_free (alloc, state.settings.user_data);
+ alloc = top;
+ }
+
+ if (!state.first_pass)
+ json_value_free_ex (&state.settings, root);
+
+ return 0;
+}
+
+json_value * json_parse (const json_char * json, size_t length)
+{
+ json_settings settings = { 0 };
+ return json_parse_ex (&settings, json, length, 0);
+}
+
+void json_value_free_ex (json_settings * settings, json_value * value)
+{
+ json_value * cur_value;
+
+ if (!value)
+ return;
+
+ value->parent = 0;
+
+ while (value)
+ {
+ switch (value->type)
+ {
+ case json_array:
+
+ if (!value->u.array.length)
+ {
+ settings->mem_free (value->u.array.values, settings->user_data);
+ break;
+ }
+
+ value = value->u.array.values [-- value->u.array.length];
+ continue;
+
+ case json_object:
+
+ if (!value->u.object.length)
+ {
+ settings->mem_free (value->u.object.values, settings->user_data);
+ break;
+ }
+
+ value = value->u.object.values [-- value->u.object.length].value;
+ continue;
+
+ case json_string:
+
+ settings->mem_free (value->u.string.ptr, settings->user_data);
+ break;
+
+ default:
+ break;
+ };
+
+ cur_value = value;
+ value = value->parent;
+ settings->mem_free (cur_value, settings->user_data);
+ }
+}
+
+void json_value_free (json_value * value)
+{
+ json_settings settings = { 0 };
+ settings.mem_free = default_free;
+ json_value_free_ex (&settings, value);
+}
+
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.