diff --git a/src/cJSON.c b/src/cJSON.c index 101d5568..c4fd5f7e 100644 --- a/src/cJSON.c +++ b/src/cJSON.c @@ -1,1490 +1,1516 @@ /* cJSON.c - JSON parser in C. * Copyright (c) 2009 Dave Gamble * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * * SPDX-License-Identifier: MIT * * Note that this code has been modified from the original code taken * from cjson-code-58.zip before 2014 (my first local commit was in * 2014 but I may used the code even earlier). Since 2016 the project * was revived and moved to https://github.com/DaveGamble/cJSON.git. * It is now a lot more complex and has substantial changes so that it * is not possible to merge them directly. In any case we only need a * simple parser and not a complete library. I have looked through * the commits and fixed a few things which should apply; I also added * a few references to the upstream code. Regression test are missing! */ #ifdef HAVE_CONFIG_H # include #endif #include #include #include #include +#include #include #include #include #include #include #include "cJSON.h" /* Only use calloc. */ #define CALLOC_ONLY 1 /* Maximum recursion depth */ #define MAX_DEPTH 512 /* To avoid that a compiler optimizes certain memset calls away, these macros may be used instead. */ #define wipememory2(_ptr,_set,_len) do { \ volatile char *_vptr=(volatile char *)(_ptr); \ size_t _vlen=(_len); \ while(_vlen) { *_vptr=(_set); _vptr++; _vlen--; } \ } while(0) #define wipememory(_ptr,_len) wipememory2(_ptr,0,_len) /* We use malloc function wrappers from gpgrt (aka libgpg-error). */ #if GPGRT_VERSION_NUMBER >= 0x011c00 /* 1.28 */ # include # define xtrycalloc(a,b) gpgrt_calloc ((a), (b)) # define xtrystrdup(a) gpgrt_strdup ((a)) # define xfree(a) gpgrt_free ((a)) # if CALLOC_ONLY # define xtrymalloc(a) gpgrt_calloc (1, (a)) # else # define xtrymalloc(a) gpgrt_malloc ((a)) # endif #else /* Without gpgrt (aka libgpg-error). */ # define xtrycalloc(a,b) calloc ((a), (b)) # define xtrystrdup(a) strdup ((a)) # define xfree(a) free ((a)) # if CALLOC_ONLY # define xtrymalloc(a) calloc (1, (a)) # else # define xtrymalloc(a) malloc ((a)) # endif #endif static int cJSON_strcasecmp (const char *s1, const char *s2) { if (!s1) return (s1 == s2) ? 0 : 1; if (!s2) return 1; for (; tolower (*(const unsigned char *)s1) == tolower (*(const unsigned char *) s2); ++s1, ++s2) if (*s1 == 0) return 0; return tolower (*(const unsigned char *) s1) - tolower (*(const unsigned char *) s2); } /* Internal constructor. */ static cJSON * cJSON_New_Item (void) { return xtrycalloc (1, sizeof (cJSON)); } /* Delete a cJSON structure. (Does not clobber ERRNO). */ void cJSON_Delete (cJSON * c) { cJSON *next; int save_errno; if (!c) return; save_errno = errno; while (c) { next = c->next; if (!(c->type & cJSON_IsReference) && c->child) cJSON_Delete (c->child); if (!(c->type & cJSON_IsReference) && c->valuestring) { wipememory (c->valuestring, strlen (c->valuestring)); xfree (c->valuestring); } if (c->string) { wipememory (c->string, strlen (c->string)); xfree (c->string); } xfree (c); c = next; } errno = save_errno; } /* Parse the input text to generate a number, and populate the result * into item. */ static const char * parse_number (cJSON * item, const char *num) { - double n = 0, sign = 1, scale = 0; - int subscale = 0, signsubscale = 1; + int subscale = 0; + int signsubscale = 1; + double n = 0; + double sign = 1; + double scale = 0; + double dblmin = INT32_MIN; + double dblmax = INT32_MAX; if (*num == '-') sign = -1, num++; /* Has sign? */ if (*num == '0') num++; /* is zero */ if (*num >= '1' && *num <= '9') do n = (n * 10.0) + (*num++ - '0'); while (*num >= '0' && *num <= '9'); /* Number? */ if (*num == '.' && num[1] >= '0' && num[1] <= '9') { num++; do n = (n * 10.0) + (*num++ - '0'), scale--; while (*num >= '0' && *num <= '9'); } /* Fractional part? */ if (*num == 'e' || *num == 'E') /* Exponent? */ { num++; if (*num == '+') num++; - else if (*num == '-') - signsubscale = -1, num++; /* With sign? */ + else if (*num == '-') /* With sign? */ + signsubscale = -1, num++; while (*num >= '0' && *num <= '9') - subscale = (subscale * 10) + (*num++ - '0'); /* Number? */ + { + if ((10 * (double)subscale) > dblmax) + break; + subscale = (subscale * 10) + (*num++ - '0'); + } } /* number = +/- number.fraction * 10^+/- exponent */ n = sign * n * pow (10.0, (scale + subscale * signsubscale)); - item->valuedouble = n; - item->valueint = (int) n; + /* For NAN set both parts to 0. For out of range values let the + * integer part be 0. */ + if (isnan (n) || isinf (n)) + { + item->valuedouble = 0; + item->valueint = 0; + } + else if (n > dblmax || n < dblmin) + { + item->valuedouble = n; + item->valueint = 0; + } + else + { + item->valuedouble = n; + item->valueint = (int)n; + } + item->type = cJSON_Number; return num; } /* Render the number nicely from the given item into a string. */ static char * print_number (cJSON * item) { char *str; double d = item->valuedouble; if (fabs (((double) item->valueint) - d) <= DBL_EPSILON && d <= INT_MAX && d >= INT_MIN) { /* 2^64+1 can be represented in 21 chars. */ str = xtrymalloc (21); if (str) sprintf (str, "%d", item->valueint); } else { str = xtrymalloc (64); /* This is a nice tradeoff. */ if (str) { if (fabs (floor (d) - d) <= DBL_EPSILON && fabs (d) < 1.0e60) sprintf (str, "%.0f", d); else if (fabs (d) < 1.0e-6 || fabs (d) > 1.0e9) sprintf (str, "%e", d); else sprintf (str, "%f", d); } } return str; } static unsigned parse_hex4 (const char *str) { unsigned h = 0; if (*str >= '0' && *str <= '9') h += (*str) - '0'; else if (*str >= 'A' && *str <= 'F') h += 10 + (*str) - 'A'; else if (*str >= 'a' && *str <= 'f') h += 10 + (*str) - 'a'; else return 0; h = h << 4; str++; if (*str >= '0' && *str <= '9') h += (*str) - '0'; else if (*str >= 'A' && *str <= 'F') h += 10 + (*str) - 'A'; else if (*str >= 'a' && *str <= 'f') h += 10 + (*str) - 'a'; else return 0; h = h << 4; str++; if (*str >= '0' && *str <= '9') h += (*str) - '0'; else if (*str >= 'A' && *str <= 'F') h += 10 + (*str) - 'A'; else if (*str >= 'a' && *str <= 'f') h += 10 + (*str) - 'a'; else return 0; h = h << 4; str++; if (*str >= '0' && *str <= '9') h += (*str) - '0'; else if (*str >= 'A' && *str <= 'F') h += 10 + (*str) - 'A'; else if (*str >= 'a' && *str <= 'f') h += 10 + (*str) - 'a'; else return 0; return h; } /* Parse the input text into an unescaped cstring, and populate item. */ static const unsigned char firstByteMark[7] = { 0x00, 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC }; static const char * parse_string (cJSON * item, const char *str, const char **ep) { const char *ptr = str + 1; char *ptr2; char *out; int len = 0; unsigned uc, uc2; /* FIXME: We should consider eary failure like it is done with * commit 8656386c4f4a12f1cf3d6b26158407fd05e65029 in upstream. */ if (*str != '\"') { *ep = str; return 0; } /* not a string! */ while (*ptr != '\"' && *ptr && ++len) if (*ptr++ == '\\' && *ptr) ptr++; /* Skip escaped quotes. */ out = xtrymalloc (len + 2); /* This is how long we need for the * string, roughly. We add one extra * byte in case the last input * character is a backslash. */ if (!out) return 0; ptr = str + 1; ptr2 = out; while (*ptr != '\"' && *ptr) { if (*ptr != '\\') *ptr2++ = *ptr++; else { ptr++; if (!*ptr) break; switch (*ptr) { case 'b': *ptr2++ = '\b'; break; case 'f': *ptr2++ = '\f'; break; case 'n': *ptr2++ = '\n'; break; case 'r': *ptr2++ = '\r'; break; case 't': *ptr2++ = '\t'; break; case 'u': /* transcode utf16 to utf8. */ uc = parse_hex4 (ptr + 1); if (!uc) break; /* Bad hex; continue right after the 'u'. */ ptr += 4; /* get the unicode char. */ if ((uc >= 0xDC00 && uc <= 0xDFFF)) break; /* check for invalid. */ if (uc >= 0xD800 && uc <= 0xDBFF) /* UTF16 surrogate pairs. */ { if (ptr[1] != '\\' || ptr[2] != 'u') break; /* missing second-half of surrogate. */ ptr += 2; uc2 = parse_hex4 (ptr + 1); if (!uc2) break; /* Bad hex; continue right after the 'u'. */ ptr += 4; if (uc2 < 0xDC00 || uc2 > 0xDFFF) break; /* invalid second-half of surrogate. */ uc = 0x10000 + (((uc & 0x3FF) << 10) | (uc2 & 0x3FF)); } len = 4; if (uc < 0x80) len = 1; else if (uc < 0x800) len = 2; else if (uc < 0x10000) len = 3; ptr2 += len; switch (len) { case 4: *--ptr2 = ((uc | 0x80) & 0xBF); uc >>= 6; /*FALLTHRU*/ case 3: *--ptr2 = ((uc | 0x80) & 0xBF); uc >>= 6; /*FALLTHRU*/ case 2: *--ptr2 = ((uc | 0x80) & 0xBF); uc >>= 6; /*FALLTHRU*/ case 1: *--ptr2 = (uc | firstByteMark[len]); } ptr2 += len; break; default: /* Fixme: Should we fail here: See * https://github.com/DaveGamble/cJSON/issues/10 */ *ptr2++ = *ptr; break; } ptr++; } } *ptr2 = 0; if (*ptr == '\"') ptr++; item->valuestring = out; item->type = cJSON_String; return ptr; } /* Render the cstring provided to an escaped version that can be printed. */ static char * print_string_ptr (const char *str) { const char *ptr; char *ptr2, *out; int len = 0; unsigned char token; if (!str) return xtrystrdup (""); ptr = str; while ((token = *ptr) && ++len) { if (strchr ("\"\\\b\f\n\r\t", token)) len++; else if (token < 32) len += 5; ptr++; } out = xtrymalloc (len + 3); if (!out) return 0; ptr2 = out; ptr = str; *ptr2++ = '\"'; while (*ptr) { if ((unsigned char) *ptr > 31 && *ptr != '\"' && *ptr != '\\') *ptr2++ = *ptr++; else { *ptr2++ = '\\'; switch (token = *ptr++) { case '\\': *ptr2++ = '\\'; break; case '\"': *ptr2++ = '\"'; break; case '\b': *ptr2++ = 'b'; break; case '\f': *ptr2++ = 'f'; break; case '\n': *ptr2++ = 'n'; break; case '\r': *ptr2++ = 'r'; break; case '\t': *ptr2++ = 't'; break; default: sprintf (ptr2, "u%04x", token); ptr2 += 5; break; /* escape and print */ } } } *ptr2++ = '\"'; *ptr2++ = 0; return out; } /* Invote print_string_ptr (which is useful) on an item. */ static char * print_string (cJSON * item) { return print_string_ptr (item->valuestring); } /* Predeclare these prototypes. */ static const char *parse_value (cJSON * item, const char *value, const char **ep, size_t depth); static char *print_value (cJSON * item, int depth, int fmt); static const char *parse_array (cJSON * item, const char *value, const char **ep, size_t depth); static char *print_array (cJSON * item, int depth, int fmt); static const char *parse_object (cJSON * item, const char *value, const char **ep, size_t depth); static char *print_object (cJSON * item, int depth, int fmt); /* Utility to jump whitespace and cr/lf */ static const char * skip (const char *in) { while (in && *in && (unsigned char) *in <= 32) in++; return in; } /* Parse an object - create a new root, and populate. */ cJSON * cJSON_ParseWithOpts (const char *value, const char **return_parse_end, int require_null_terminated, size_t *r_erroff) { const char *end = 0; const char *ep = 0; cJSON *c; if (r_erroff) *r_erroff = 0; c = cJSON_New_Item (); if (!c) return NULL; /* memory fail */ end = parse_value (c, skip (value), &ep, 0); if (!end) { cJSON_Delete (c); errno = EINVAL; if (r_erroff) *r_erroff = ep - value; return 0; } /* parse failure. ep is set. */ /* if we require null-terminated JSON without appended garbage, skip and then check for a null terminator */ if (require_null_terminated) { end = skip (end); if (*end) { cJSON_Delete (c); ep = end; errno = EINVAL; if (r_erroff) *r_erroff = ep - value; return 0; } } if (return_parse_end) *return_parse_end = end; return c; } /* Default options for cJSON_Parse */ cJSON * cJSON_Parse (const char *value, size_t *r_erroff) { return cJSON_ParseWithOpts (value, 0, 0, r_erroff); } /* Render a cJSON item/entity/structure to text. */ char * cJSON_Print (cJSON * item) { return print_value (item, 0, 1); } char * cJSON_PrintUnformatted (cJSON * item) { return print_value (item, 0, 0); } /* Parser core - when encountering text, process appropriately. */ static const char * parse_value (cJSON * item, const char *value, const char **ep, size_t depth) { if (depth > MAX_DEPTH) { *ep = value; return 0; } if (!value) return 0; /* Fail on null. */ if (!strncmp (value, "null", 4)) { item->type = cJSON_NULL; return value + 4; } if (!strncmp (value, "false", 5)) { item->type = cJSON_False; return value + 5; } if (!strncmp (value, "true", 4)) { item->type = cJSON_True; item->valueint = 1; return value + 4; } if (*value == '\"') { return parse_string (item, value, ep); } if (*value == '-' || (*value >= '0' && *value <= '9')) { return parse_number (item, value); } if (*value == '[') { return parse_array (item, value, ep, depth + 1); } if (*value == '{') { return parse_object (item, value, ep, depth + 1); } *ep = value; return 0; /* failure. */ } /* Render a value to text. */ static char * print_value (cJSON * item, int depth, int fmt) { char *out = 0; if (!item) return 0; switch ((item->type) & 255) { case cJSON_NULL: out = xtrystrdup ("null"); break; case cJSON_False: out = xtrystrdup ("false"); break; case cJSON_True: out = xtrystrdup ("true"); break; case cJSON_Number: out = print_number (item); break; case cJSON_String: out = print_string (item); break; case cJSON_Array: out = print_array (item, depth, fmt); break; case cJSON_Object: out = print_object (item, depth, fmt); break; } return out; } /* Build an array from input text. */ static const char * parse_array (cJSON * item, const char *value, const char **ep, size_t depth) { cJSON *child; if (depth > MAX_DEPTH) { *ep = value; return 0; } if (*value != '[') { *ep = value; return 0; } /* not an array! */ item->type = cJSON_Array; value = skip (value + 1); if (*value == ']') return value + 1; /* empty array. */ item->child = child = cJSON_New_Item (); if (!item->child) return 0; /* memory fail */ /* skip any spacing, get the value. */ value = skip (parse_value (child, skip (value), ep, depth + 1)); if (!value) return 0; while (*value == ',') { cJSON *new_item; if (!(new_item = cJSON_New_Item ())) return 0; /* memory fail */ child->next = new_item; new_item->prev = child; child = new_item; value = skip (parse_value (child, skip (value + 1), ep, depth + 1)); if (!value) return 0; /* memory fail */ } if (*value == ']') return value + 1; /* end of array */ *ep = value; return 0; /* malformed. */ } /* Render an array to text */ static char * print_array (cJSON * item, int depth, int fmt) { char **entries; char *out = 0, *ptr, *ret; int len = 5; cJSON *child = item->child; int numentries = 0, i = 0, fail = 0; /* How many entries in the array? */ while (child) numentries++, child = child->next; /* Explicitly handle numentries==0 */ if (!numentries) { out = xtrymalloc (3); if (out) strcpy (out, "[]"); return out; } /* Allocate an array to hold the values for each */ entries = xtrymalloc (numentries * sizeof (char *)); if (!entries) return 0; memset (entries, 0, numentries * sizeof (char *)); /* Retrieve all the results: */ child = item->child; while (child && !fail) { ret = print_value (child, depth + 1, fmt); entries[i++] = ret; if (ret) len += strlen (ret) + 2 + (fmt ? 1 : 0); else fail = 1; child = child->next; } /* If we didn't fail, try to xtrymalloc the output string */ if (!fail) out = xtrymalloc (len); /* If that fails, we fail. */ if (!out) fail = 1; /* Handle failure. */ if (fail) { for (i = 0; i < numentries; i++) if (entries[i]) xfree (entries[i]); xfree (entries); return 0; } /* Compose the output array. */ *out = '['; ptr = out + 1; *ptr = 0; for (i = 0; i < numentries; i++) { strcpy (ptr, entries[i]); ptr += strlen (entries[i]); if (i != numentries - 1) { *ptr++ = ','; if (fmt) *ptr++ = ' '; *ptr = 0; } xfree (entries[i]); } xfree (entries); *ptr++ = ']'; *ptr++ = 0; return out; } /* Build an object from the text. */ static const char * parse_object (cJSON * item, const char *value, const char **ep, size_t depth) { cJSON *child; if (depth > MAX_DEPTH) { *ep = value; return 0; } if (*value != '{') { *ep = value; return 0; } /* not an object! */ item->type = cJSON_Object; value = skip (value + 1); if (*value == '}') return value + 1; /* empty array. */ item->child = child = cJSON_New_Item (); if (!item->child) return 0; value = skip (parse_string (child, skip (value), ep)); if (!value) return 0; child->string = child->valuestring; child->valuestring = 0; if (*value != ':') { *ep = value; return 0; } /* fail! */ /* skip any spacing, get the value. */ value = skip (parse_value (child, skip (value + 1), ep, depth + 1)); if (!value) return 0; while (*value == ',') { cJSON *new_item; if (!(new_item = cJSON_New_Item ())) return 0; /* memory fail */ child->next = new_item; new_item->prev = child; child = new_item; value = skip (parse_string (child, skip (value + 1), ep)); if (!value) return 0; child->string = child->valuestring; child->valuestring = 0; if (*value != ':') { *ep = value; return 0; } /* fail! */ /* skip any spacing, get the value. */ value = skip (parse_value (child, skip (value + 1), ep, depth + 1)); if (!value) return 0; } if (*value == '}') return value + 1; /* end of array */ *ep = value; return 0; /* malformed. */ } /* Render an object to text. */ static char * print_object (cJSON * item, int depth, int fmt) { char **entries = 0, **names = 0; char *out = 0, *ptr, *ret, *str; int len = 7, i = 0, j; cJSON *child = item->child; int numentries = 0, fail = 0; /* Count the number of entries. */ while (child) numentries++, child = child->next; /* Explicitly handle empty object case */ if (!numentries) { out = xtrymalloc (fmt ? depth + 4 : 3); if (!out) return 0; ptr = out; *ptr++ = '{'; if (fmt) { *ptr++ = '\n'; for (i = 0; i < depth - 1; i++) *ptr++ = '\t'; } *ptr++ = '}'; *ptr++ = 0; return out; } /* Allocate space for the names and the objects */ entries = xtrymalloc (numentries * sizeof (char *)); if (!entries) return 0; names = xtrymalloc (numentries * sizeof (char *)); if (!names) { xfree (entries); return 0; } memset (entries, 0, sizeof (char *) * numentries); memset (names, 0, sizeof (char *) * numentries); /* Collect all the results into our arrays: */ child = item->child; depth++; if (fmt) len += depth; while (child) { names[i] = str = print_string_ptr (child->string); entries[i++] = ret = print_value (child, depth, fmt); if (str && ret) len += strlen (ret) + strlen (str) + 2 + (fmt ? 2 + depth : 0); else fail = 1; child = child->next; } /* Try to allocate the output string */ if (!fail) out = xtrymalloc (len); if (!out) fail = 1; /* Handle failure */ if (fail) { for (i = 0; i < numentries; i++) { if (names[i]) xfree (names[i]); if (entries[i]) xfree (entries[i]); } xfree (names); xfree (entries); return 0; } /* Compose the output: */ *out = '{'; ptr = out + 1; if (fmt) *ptr++ = '\n'; *ptr = 0; for (i = 0; i < numentries; i++) { if (fmt) for (j = 0; j < depth; j++) *ptr++ = '\t'; strcpy (ptr, names[i]); ptr += strlen (names[i]); *ptr++ = ':'; if (fmt) *ptr++ = '\t'; strcpy (ptr, entries[i]); ptr += strlen (entries[i]); if (i != numentries - 1) *ptr++ = ','; if (fmt) *ptr++ = '\n'; *ptr = 0; xfree (names[i]); xfree (entries[i]); } xfree (names); xfree (entries); if (fmt) for (i = 0; i < depth - 1; i++) *ptr++ = '\t'; *ptr++ = '}'; *ptr++ = 0; return out; } /* Get Array size/item / object item. */ int cJSON_GetArraySize (cJSON * array) { cJSON *c = array->child; int i = 0; while (c) i++, c = c->next; return i; } cJSON * cJSON_GetArrayItem (cJSON * array, int item) { cJSON *c = array->child; while (c && item > 0) item--, c = c->next; return c; } cJSON * cJSON_GetObjectItem (cJSON * object, const char *string) { cJSON *c = object->child; while (c && cJSON_strcasecmp (c->string, string)) c = c->next; return c; } /* Utility for array list handling. */ static void suffix_object (cJSON * prev, cJSON * item) { prev->next = item; item->prev = prev; } /* Utility for handling references. */ static cJSON * create_reference (cJSON * item) { cJSON *ref = cJSON_New_Item (); if (!ref) return 0; memcpy (ref, item, sizeof (cJSON)); ref->string = 0; ref->type |= cJSON_IsReference; ref->next = ref->prev = 0; return ref; } /* Add item to array/object. */ void cJSON_AddItemToArray (cJSON * array, cJSON * item) { cJSON *c; if (!item || !array) return; c = array->child; if (!c) { array->child = item; } else { while (c && c->next) c = c->next; suffix_object (c, item); } } cJSON * cJSON_AddItemToObject (cJSON * object, const char *string, cJSON * item) { char *tmp; if (!item) return 0; tmp = xtrystrdup (string); if (!tmp) return NULL; if (item->string) xfree (item->string); item->string = tmp; cJSON_AddItemToArray (object, item); return object; } cJSON * cJSON_AddNullToObject (cJSON *object, const char *name) { cJSON *obj, *tmp; tmp = cJSON_CreateNull (); if (!tmp) return NULL; obj = cJSON_AddItemToObject(object, name, tmp); if (!obj) cJSON_Delete (tmp); return obj; } cJSON * cJSON_AddTrueToObject (cJSON *object, const char *name) { cJSON *obj, *tmp; tmp = cJSON_CreateTrue (); if (!tmp) return NULL; obj = cJSON_AddItemToObject(object, name, tmp); if (!obj) cJSON_Delete (tmp); return obj; } cJSON * cJSON_AddFalseToObject (cJSON *object, const char *name) { cJSON *obj, *tmp; tmp = cJSON_CreateFalse (); if (!tmp) return NULL; obj = cJSON_AddItemToObject(object, name, tmp); if (!obj) cJSON_Delete (tmp); return obj; } cJSON * cJSON_AddBoolToObject (cJSON *object, const char *name, int b) { cJSON *obj, *tmp; tmp = cJSON_CreateBool (b); if (!tmp) return NULL; obj = cJSON_AddItemToObject(object, name, tmp); if (!obj) cJSON_Delete (tmp); return obj; } cJSON * cJSON_AddNumberToObject (cJSON *object, const char *name, double num) { cJSON *obj, *tmp; tmp = cJSON_CreateNumber (num); if (!tmp) return NULL; obj = cJSON_AddItemToObject(object, name, tmp); if (!obj) cJSON_Delete (tmp); return obj; } cJSON * cJSON_AddStringToObject (cJSON *object, const char *name, const char *string) { cJSON *obj, *tmp; tmp = cJSON_CreateString (string); if (!tmp) return NULL; obj = cJSON_AddItemToObject(object, name, tmp); if (!obj) cJSON_Delete (tmp); return obj; } void cJSON_AddItemReferenceToArray (cJSON * array, cJSON * item) { cJSON_AddItemToArray (array, create_reference (item)); } void cJSON_AddItemReferenceToObject (cJSON * object, const char *string, cJSON * item) { cJSON_AddItemToObject (object, string, create_reference (item)); } cJSON * cJSON_DetachItemFromArray (cJSON * array, int which) { cJSON *c = array->child; while (c && which > 0) c = c->next, which--; if (!c) return 0; if (c->prev) c->prev->next = c->next; if (c->next) c->next->prev = c->prev; if (c == array->child) array->child = c->next; c->prev = c->next = 0; return c; } void cJSON_DeleteItemFromArray (cJSON * array, int which) { cJSON_Delete (cJSON_DetachItemFromArray (array, which)); } cJSON * cJSON_DetachItemFromObject (cJSON * object, const char *string) { int i = 0; cJSON *c = object->child; while (c && cJSON_strcasecmp (c->string, string)) i++, c = c->next; if (c) return cJSON_DetachItemFromArray (object, i); return 0; } void cJSON_DeleteItemFromObject (cJSON * object, const char *string) { cJSON_Delete (cJSON_DetachItemFromObject (object, string)); } /* Replace array/object items with new ones. */ void cJSON_ReplaceItemInArray (cJSON * array, int which, cJSON * newitem) { cJSON *c = array->child; while (c && which > 0) c = c->next, which--; if (!c) return; newitem->next = c->next; newitem->prev = c->prev; if (newitem->next) newitem->next->prev = newitem; if (c == array->child) array->child = newitem; else newitem->prev->next = newitem; c->next = c->prev = 0; cJSON_Delete (c); } void cJSON_ReplaceItemInObject (cJSON * object, const char *string, cJSON * newitem) { int i = 0; cJSON *c = object->child; while (c && cJSON_strcasecmp (c->string, string)) i++, c = c->next; if (c) { /* FIXME: I guess we should free newitem->string here. See * upstream commit 0d10e279c8b604f71829b5d49d092719f4ae96b6. */ newitem->string = xtrystrdup (string); cJSON_ReplaceItemInArray (object, i, newitem); } } /* Create basic types: */ cJSON * cJSON_CreateNull (void) { cJSON *item = cJSON_New_Item (); if (item) item->type = cJSON_NULL; return item; } cJSON * cJSON_CreateTrue (void) { cJSON *item = cJSON_New_Item (); if (item) item->type = cJSON_True; return item; } cJSON * cJSON_CreateFalse (void) { cJSON *item = cJSON_New_Item (); if (item) item->type = cJSON_False; return item; } cJSON * cJSON_CreateBool (int b) { cJSON *item = cJSON_New_Item (); if (item) item->type = b ? cJSON_True : cJSON_False; return item; } cJSON * cJSON_CreateNumber (double num) { cJSON *item = cJSON_New_Item (); if (item) { item->type = cJSON_Number; item->valuedouble = num; item->valueint = (int) num; } return item; } cJSON * cJSON_CreateString (const char *string) { cJSON *item = cJSON_New_Item (); if (item) { item->type = cJSON_String; item->valuestring = xtrystrdup (string); } return item; } cJSON * cJSON_CreateStringConvey (char *string) { cJSON *item = cJSON_New_Item (); if (item) { item->type = cJSON_String; item->valuestring = string; } return item; } cJSON * cJSON_CreateArray (void) { cJSON *item = cJSON_New_Item (); if (item) item->type = cJSON_Array; return item; } cJSON * cJSON_CreateObject (void) { cJSON *item = cJSON_New_Item (); if (item) item->type = cJSON_Object; return item; } /* Create Arrays: */ cJSON * cJSON_CreateIntArray (const int *numbers, int count) { int i; cJSON *n = 0, *p = 0, *a = cJSON_CreateArray (); for (i = 0; a && i < count; i++) { n = cJSON_CreateNumber (numbers[i]); if (!i) a->child = n; else suffix_object (p, n); p = n; } return a; } cJSON * cJSON_CreateFloatArray (const float *numbers, int count) { int i; cJSON *n = 0, *p = 0, *a = cJSON_CreateArray (); for (i = 0; a && i < count; i++) { n = cJSON_CreateNumber (numbers[i]); if (!i) a->child = n; else suffix_object (p, n); p = n; } return a; } cJSON * cJSON_CreateDoubleArray (const double *numbers, int count) { int i; cJSON *n = 0, *p = 0, *a = cJSON_CreateArray (); for (i = 0; a && i < count; i++) { n = cJSON_CreateNumber (numbers[i]); if (!i) a->child = n; else suffix_object (p, n); p = n; } return a; } cJSON * cJSON_CreateStringArray (const char **strings, int count) { int i; cJSON *n = 0, *p = 0, *a = cJSON_CreateArray (); for (i = 0; a && i < count; i++) { n = cJSON_CreateString (strings[i]); if (!i) a->child = n; else suffix_object (p, n); p = n; } return a; } /* Duplication */ cJSON * cJSON_Duplicate (cJSON * item, int recurse) { cJSON *newitem, *cptr, *nptr = 0, *newchild; /* Bail on bad ptr */ if (!item) return 0; /* Create new item */ newitem = cJSON_New_Item (); if (!newitem) return 0; /* Copy over all vars */ newitem->type = item->type & (~cJSON_IsReference), newitem->valueint = item->valueint, newitem->valuedouble = item->valuedouble; if (item->valuestring) { newitem->valuestring = xtrystrdup (item->valuestring); if (!newitem->valuestring) { cJSON_Delete (newitem); return 0; } } if (item->string) { newitem->string = xtrystrdup (item->string); if (!newitem->string) { cJSON_Delete (newitem); return 0; } } /* If non-recursive, then we're done! */ if (!recurse) return newitem; /* Walk the ->next chain for the child. */ cptr = item->child; while (cptr) { /* Duplicate (with recurse) each item in the ->next chain */ newchild = cJSON_Duplicate (cptr, 1); if (!newchild) { cJSON_Delete (newitem); return 0; } if (nptr) { /* If newitem->child already set, * then crosswire ->prev and ->next and move on. */ nptr->next = newchild, newchild->prev = nptr; nptr = newchild; } else { /* Set newitem->child and move to it. */ newitem->child = newchild; nptr = newchild; } cptr = cptr->next; } return newitem; } void cJSON_Minify (char *json) { char *into = json; while (*json) { if (*json == ' ') json++; else if (*json == '\t') json++; /* Whitespace characters. */ else if (*json == '\r') json++; else if (*json == '\n') json++; else if (*json == '/' && json[1] == '/') while (*json && *json != '\n') json++; /* Double-slash comments, to end of line. */ else if (*json == '/' && json[1] == '*') { while (*json && !(*json == '*' && json[1] == '/')) json++; json += 2; } /* Multiline comments. */ else if (*json == '\"') { *into++ = *json++; while (*json && *json != '\"') { if (*json == '\\') *into++ = *json++; if (*json) *into++ = *json++; } if (*json) *into++ = *json++; } /* String literals, which are \" sensitive. */ else *into++ = *json++; /* All other characters. */ } *into = 0; /* and null-terminate. */ }