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3ed03f9c8f
The jsmn parser is a beautiful piece of code. In particular, you can parse part of a string, then continue where you left off. We don't take advantage of this, however, meaning for large JSON objects we parse them multiple times before finally having enough to complete. Expose the parser state and tokens through the API, so the caller can pass them in repeatedly. For the moment, every caller is allocates each time (except the unit tests). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
274 lines
7.6 KiB
C
274 lines
7.6 KiB
C
#include "../json_helpers.c"
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#include <assert.h>
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#include <ccan/mem/mem.h>
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#include <common/json.h>
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#include <common/utils.h>
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#include <inttypes.h>
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#include <stdio.h>
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#include <wire/wire.h>
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/* AUTOGENERATED MOCKS START */
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/* Generated stub for node_id_from_hexstr */
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bool node_id_from_hexstr(const char *str UNNEEDED, size_t slen UNNEEDED, struct node_id *id UNNEEDED)
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{ fprintf(stderr, "node_id_from_hexstr called!\n"); abort(); }
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/* AUTOGENERATED MOCKS END */
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// issue #577
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static void do_json_tok_bitcoin_amount(const char* val, uint64_t expected)
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{
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uint64_t amount;
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jsmntok_t tok;
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tok.start = 0;
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tok.end = strlen(val);
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fprintf(stderr, "do_json_tok_bitcoin_amount(\"%s\", %"PRIu64"): ", val, expected);
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assert(json_to_bitcoin_amount(val, &tok, &amount) == true);
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assert(amount == expected);
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fprintf(stderr, "ok\n");
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}
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static int test_json_tok_bitcoin_amount(void)
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{
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do_json_tok_bitcoin_amount("0.00000001", 1);
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do_json_tok_bitcoin_amount("0.00000007", 7);
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do_json_tok_bitcoin_amount("0.00000008", 8);
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do_json_tok_bitcoin_amount("0.00000010", 10);
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do_json_tok_bitcoin_amount("0.12345678", 12345678);
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do_json_tok_bitcoin_amount("0.01234567", 1234567);
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do_json_tok_bitcoin_amount("123.45678900", 12345678900);
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return 0;
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}
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static void do_json_tok_millionths(const char *val, bool ok, uint64_t expected)
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{
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uint64_t amount;
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jsmntok_t tok;
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tok.start = 0;
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tok.end = strlen(val);
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assert(json_to_millionths(val, &tok, &amount) == ok);
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if (ok)
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assert(amount == expected);
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}
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static int test_json_tok_millionths(void)
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{
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do_json_tok_millionths("", false, 0);
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do_json_tok_millionths("0..0", false, 0);
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do_json_tok_millionths("0.0.", false, 0);
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do_json_tok_millionths(".", false, 0);
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do_json_tok_millionths("..", false, 0);
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do_json_tok_millionths("0", true, 0);
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do_json_tok_millionths(".0", true, 0);
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do_json_tok_millionths("0.", true, 0);
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do_json_tok_millionths("100", true, 100 * 1000000);
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do_json_tok_millionths("100.0", true, 100 * 1000000);
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do_json_tok_millionths("100.", true, 100 * 1000000);
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do_json_tok_millionths("100.000001", true, 100 * 1000000 + 1);
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do_json_tok_millionths("100.0000001", true, 100 * 1000000);
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do_json_tok_millionths(".000009", true, 9);
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do_json_tok_millionths(".0000099", true, 9);
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do_json_tok_millionths("18446744073709.551615", true,
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18446744073709551615ULL);
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do_json_tok_millionths("18446744073709.551616", false, 0);
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do_json_tok_millionths("18446744073709.551625", false, 0);
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do_json_tok_millionths("18446744073709.551715", false, 0);
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do_json_tok_millionths("18446744073709.552615", false, 0);
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do_json_tok_millionths("18446744073709.561615", false, 0);
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do_json_tok_millionths("18446744073709.651615", false, 0);
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do_json_tok_millionths("18446744073710.551615", false, 0);
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do_json_tok_millionths("18446744073809.551615", false, 0);
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do_json_tok_millionths("18446744074709.551615", false, 0);
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do_json_tok_millionths("18446744083709.551615", false, 0);
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do_json_tok_millionths("18446744173709.551615", false, 0);
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do_json_tok_millionths("18446745073709.551615", false, 0);
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do_json_tok_millionths("18446754073709.551615", false, 0);
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do_json_tok_millionths("18446844073709.551615", false, 0);
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do_json_tok_millionths("18447744073709.551615", false, 0);
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do_json_tok_millionths("18456744073709.551615", false, 0);
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do_json_tok_millionths("18546744073709.551615", false, 0);
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do_json_tok_millionths("19446744073709.551615", false, 0);
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do_json_tok_millionths("28446744073709.551615", false, 0);
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return 0;
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}
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static void test_json_tok_size(void)
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{
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jsmntok_t *toks;
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char *buf;
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bool ok, complete;
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jsmn_parser parser;
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buf = "[\"e1\", [\"e2\", \"e3\"]]";
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toks = toks_alloc(tmpctx);
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jsmn_init(&parser);
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ok = json_parse_input(&parser, &toks, buf, strlen(buf), &complete);
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assert(ok);
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assert(complete);
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/* size only counts *direct* children */
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assert(toks[0].size == 2);
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assert(toks[2].size == 2);
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buf = "[[\"e1\", \"e2\"], \"e3\"]";
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toks_reset(toks);
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jsmn_init(&parser);
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ok = json_parse_input(&parser, &toks, buf, strlen(buf), &complete);
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assert(ok);
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assert(complete);
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/* size only counts *direct* children */
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assert(toks[0].size == 2);
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assert(toks[1].size == 2);
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buf = "{\"e1\" : {\"e2\": 2, \"e3\": 3}}";
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toks_reset(toks);
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jsmn_init(&parser);
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ok = json_parse_input(&parser, &toks, buf, strlen(buf), &complete);
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assert(ok);
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assert(complete);
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/* size only counts *direct* children */
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assert(toks[0].size == 1);
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assert(toks[2].size == 2);
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buf = "{\"e1\" : {\"e2\": 2, \"e3\": 3}, \"e4\" : {\"e5\": 5, \"e6\": 6}}";
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toks_reset(toks);
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jsmn_init(&parser);
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ok = json_parse_input(&parser, &toks, buf, strlen(buf), &complete);
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assert(ok);
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assert(complete);
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/* size only counts *direct* children */
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assert(toks[0].size == 2);
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assert(toks[2].size == 2);
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assert(toks[8].size == 2);
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/* This should *not* parse! (used to give toks[0]->size == 3!) */
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buf = "{ \"\" \"\" \"\" }";
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toks_reset(toks);
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jsmn_init(&parser);
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ok = json_parse_input(&parser, &toks, buf, strlen(buf), &complete);
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assert(!ok);
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/* This should *not* parse! (used to give toks[0]->size == 2!) */
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buf = "{ 'satoshi', '546' }";
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toks = json_parse_simple(tmpctx, buf, strlen(buf));
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assert(!toks);
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}
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static void test_json_delve(void)
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{
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const jsmntok_t *toks, *t;
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char *buf;
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buf = "{\"1\":\"one\", \"2\":\"two\", \"3\":[\"three\", {\"deeper\": 17}]}";
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toks = json_parse_simple(tmpctx, buf, strlen(buf));
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assert(toks);
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assert(toks->size == 3);
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t = json_delve(buf, toks, ".1");
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assert(t);
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assert(t->type == JSMN_STRING);
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assert(json_tok_streq(buf, t, "one"));
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assert(t == toks+2);
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t = json_delve(buf, toks, ".2");
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assert(t);
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assert(t->type == JSMN_STRING);
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assert(json_tok_streq(buf, t, "two"));
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assert(t == toks+4);
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t = json_delve(buf, toks, ".3");
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assert(t);
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assert(t->type == JSMN_ARRAY);
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assert(t == toks+6);
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assert(t->size == 2);
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t = json_delve(buf, toks, ".3[0]");
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assert(t);
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assert(t->type == JSMN_STRING);
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assert(json_tok_streq(buf, t, "three"));
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assert(t == toks+7);
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t = json_delve(buf, toks, ".3[1]");
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assert(t);
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assert(t->type == JSMN_OBJECT);
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assert(t == toks+8);
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assert(t->size == 1);
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t = json_delve(buf, toks, ".3[1].deeper");
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assert(t);
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assert(t->type == JSMN_PRIMITIVE);
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assert(memeq(buf + t->start, t->end - t->start, "17", strlen("17")));
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assert(t == toks+10);
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t = json_delve(buf, toks, ".4");
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assert(!t);
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t = json_delve(buf, toks, "[0]");
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assert(!t);
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t = json_delve(buf, toks, ".deeper");
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assert(!t);
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t = json_delve(buf, toks, ".3[2]");
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assert(!t);
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t = json_delve(buf, toks, ".3[2].deeper");
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assert(!t);
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t = json_delve(buf, toks, ".3[0].deeper");
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assert(!t);
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t = json_delve(buf, toks, ".3[1].deeper[0]");
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assert(!t);
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t = json_delve(buf, toks, ".3[1][0]");
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assert(!t);
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/* Now a real example. */
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buf = "{\n"
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" \"jsonrpc\": \"2.0\", \n"
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" \"method\": \"init\", \n"
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" \"id\": 1, \n"
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" \"params\": {\n"
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" \"options\": {\n"
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" }, \n"
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" \"configuration\": {\n"
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" \"lightning-dir\": \"/tmp/ltests-n2hyd543/test_pay_plugin_1/lightning-2/\", \n"
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" \"rpc-file\": \"lightning-rpc\"\n"
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" }\n"
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" }\n"
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"}\n"
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"\n";
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toks = json_parse_simple(tmpctx, buf, strlen(buf));
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assert(toks);
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assert(toks->size == 4);
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t = json_delve(buf, toks, ".rpcfile");
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assert(!t);
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t = json_delve(buf, toks, ".configuration.rpc-file");
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assert(!t);
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t = json_delve(buf, toks, ".params.configuration");
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assert(t);
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assert(t->size == 2);
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t = json_delve(buf, toks, ".params.configuration.rpc-file");
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assert(t);
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assert(t->type == JSMN_STRING);
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assert(json_tok_streq(buf, t, "lightning-rpc"));
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}
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int main(void)
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{
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setup_locale();
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setup_tmpctx();
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test_json_tok_size();
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test_json_tok_bitcoin_amount();
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test_json_tok_millionths();
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test_json_delve();
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assert(!taken_any());
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take_cleanup();
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tal_free(tmpctx);
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}
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