1 /*
2 * lws-api-test-lws_struct-sqlite
3 *
4 * Written in 2010-2020 by Andy Green <andy@warmcat.com>
5 *
6 * This file is made available under the Creative Commons CC0 1.0
7 * Universal Public Domain Dedication.
8 *
9 * lws_struct apis are used to serialize and deserialize your C structs and
10 * linked-lists in a standardized way that's very modest on memory but
11 * convenient and easy to maintain.
12 *
13 * The API test shows how to serialize and deserialize a struct with a linked-
14 * list of child structs in JSON using lws_struct APIs.
15 */
16
17 #include <libwebsockets.h>
18
19 typedef struct teststruct {
20 lws_dll2_t list; /* not directly serialized */
21
22 char str1[32];
23 const char *str2;
24 uint8_t u8;
25 uint16_t u16;
26 uint32_t u32;
27 uint64_t u64;
28 int32_t s32;
29 } teststruct_t;
30
31 /*
32 * These are the members that we will serialize and deserialize, not every
33 * member in the struct (eg, the dll2 list member)
34 */
35
36 static const lws_struct_map_t lsm_teststruct[] = {
37 LSM_CARRAY (teststruct_t, str1, "str1"),
38 LSM_STRING_PTR (teststruct_t, str2, "str2"),
39 LSM_UNSIGNED (teststruct_t, u8, "u8"),
40 LSM_UNSIGNED (teststruct_t, u16, "u16"),
41 LSM_UNSIGNED (teststruct_t, u32, "u32"),
42 LSM_UNSIGNED (teststruct_t, u64, "u64"),
43 LSM_SIGNED (teststruct_t, s32, "s32"),
44 };
45
46 static const lws_struct_map_t lsm_schema_apitest[] = {
47 LSM_SCHEMA_DLL2 (teststruct_t, list, NULL, lsm_teststruct, "apitest")
48 };
49
50 static const char *test_string =
51 "No one would have believed in the last years of the nineteenth "
52 "century that this world was being watched keenly and closely by "
53 "intelligences greater than man's and yet as mortal as his own; that as "
54 "men busied themselves about their various concerns they were "
55 "scrutinised and studied, perhaps almost as narrowly as a man with a "
56 "microscope might scrutinise the transient creatures that swarm and "
57 "multiply in a drop of water. With infinite complacency men went to "
58 "and fro over this globe about their little affairs, serene in their "
59 "assurance of their empire over matter. It is possible that the "
60 "infusoria under the microscope do the same. No one gave a thought to "
61 "the older worlds of space as sources of human danger, or thought of "
62 "them only to dismiss the idea of life upon them as impossible or "
63 "improbable. It is curious to recall some of the mental habits of "
64 "those departed days. At most terrestrial men fancied there might be "
65 "other men upon Mars, perhaps inferior to themselves and ready to "
66 "welcome a missionary enterprise. Yet across the gulf of space, minds "
67 "that are to our minds as ours are to those of the beasts that perish, "
68 "intellects vast and cool and unsympathetic, regarded this earth with "
69 "envious eyes, and slowly and surely drew their plans against us. And "
70 "early in the twentieth century came the great disillusionment. ";
71
main(int argc,const char ** argv)72 int main(int argc, const char **argv)
73 {
74 int e = 0, logs = LLL_USER | LLL_ERR | LLL_WARN | LLL_NOTICE;
75 struct lws_context_creation_info info;
76 struct lws_context *context;
77 struct lwsac *ac = NULL;
78 lws_dll2_owner_t resown;
79 teststruct_t ts, *pts;
80 const char *p;
81 sqlite3 *db;
82
83 if ((p = lws_cmdline_option(argc, argv, "-d")))
84 logs = atoi(p);
85
86 lws_set_log_level(logs, NULL);
87 lwsl_user("LWS API selftest: lws_struct SQLite\n");
88
89 memset(&info, 0, sizeof info); /* otherwise uninitialized garbage */
90 #if defined(LWS_WITH_NETWORK)
91 info.port = CONTEXT_PORT_NO_LISTEN;
92 #endif
93 context = lws_create_context(&info);
94 if (!context) {
95 lwsl_err("lws init failed\n");
96 return 1;
97 }
98
99
100 unlink("_lws_apitest.sq3");
101
102 if (lws_struct_sq3_open(context, "_lws_apitest.sq3", 1, &db)) {
103 lwsl_err("%s: failed to open table\n", __func__);
104 goto bail;
105 }
106
107 /* 1. populate the struct */
108
109 memset(&ts, 0, sizeof(ts));
110
111 lws_strncpy(ts.str1, "hello", sizeof(ts.str1));
112 ts.str2 = test_string;
113 ts.u8 = 1;
114 ts.u16 = 512,
115 ts.u32 = 0x55aa1234; /* 1437209140, */
116 ts.u64 = 0x34abcdef01ull;
117 ts.s32 = -1;
118
119 /* add our struct to the dll2 owner list */
120
121 lws_dll2_owner_clear(&resown);
122 lws_dll2_add_head(&ts.list, &resown);
123
124 /* gratuitously create the table */
125
126 if (lws_struct_sq3_create_table(db, lsm_schema_apitest)) {
127 lwsl_err("%s: Create table failed\n", __func__);
128 e++;
129 goto done;
130 }
131
132 /* serialize the items on the dll2 owner */
133
134 if (lws_struct_sq3_serialize(db, lsm_schema_apitest, &resown, 0)) {
135 lwsl_err("%s: Serialize failed\n", __func__);
136 e++;
137 goto done;
138 }
139
140 /* resown should be cleared by deserialize, ac is already NULL */
141
142 lws_dll2_owner_clear(&resown); /* make sure old resown data is gone */
143
144 if (lws_struct_sq3_deserialize(db, NULL, NULL, lsm_schema_apitest,
145 &resown, &ac, 0, 1)) {
146 lwsl_err("%s: Deserialize failed\n", __func__);
147 e++;
148 goto done;
149 }
150
151 /* we should have 1 entry in resown now (created into the ac) */
152
153 if (resown.count != 1) {
154 lwsl_err("%s: Expected 1 result got %d\n", __func__,
155 resown.count);
156 e++;
157 goto done;
158 }
159
160 /*
161 * Convert the pointer to the embedded lws_dll2 into a pointer
162 * to the actual struct with the correct type
163 */
164
165 pts = lws_container_of(lws_dll2_get_head(&resown),
166 teststruct_t, list);
167
168 if (strcmp(pts->str1, "hello") ||
169 strcmp(pts->str2, test_string) ||
170 pts->u8 != 1 ||
171 pts->u16 != 512 ||
172 pts->u32 != 0x55aa1234 ||
173 pts->u64 != 0x34abcdef01ull ||
174 pts->s32 != -1) {
175 lwsl_err("%s: unexpected deser values: %s\n", __func__, pts->str1);
176 lwsl_err("%s: %s\n", __func__, pts->str2);
177 lwsl_err("%s: %u %u %u 0x%llx %d\n", __func__, pts->u8, pts->u16,
178 pts->u32, (unsigned long long)pts->u64, pts->s32);
179
180 e++;
181 goto done;
182 }
183
184 done:
185 lwsac_free(&ac);
186 lws_struct_sq3_close(&db);
187
188
189 if (e)
190 goto bail;
191
192 lws_context_destroy(context);
193
194 lwsl_user("Completed: PASS\n");
195
196 return 0;
197
198 bail:
199 lws_context_destroy(context);
200
201 lwsl_user("Completed: FAIL\n");
202
203 return 1;
204 }
205