1 #include <unistd.h>
2 #include <stdio.h>
3 #include <stdlib.h>
4 #include <sys/stat.h>
5 #include <fcntl.h>
6 #include <string.h>
7
8 #include "cn-cbor/cn-cbor.h"
9
10 #ifdef USE_CBOR_CONTEXT
11 #define CBOR_CONTEXT_PARAM , NULL
12 #else
13 #define CBOR_CONTEXT_PARAM
14 #endif
15
16 #define ERROR(msg, p) fprintf(stderr, "ERROR: " msg " %s\n", (p));
17
load_file(const char * filepath,unsigned char ** end)18 static unsigned char* load_file(const char* filepath, unsigned char **end) {
19 struct stat st;
20 if (stat(filepath, &st)==-1) {
21 ERROR("can't find file", filepath);
22 return 0;
23 }
24 int fd=open(filepath, O_RDONLY);
25 if (fd==-1) {
26 ERROR("can't open file", filepath);
27 return 0;
28 }
29 unsigned char* text=malloc(st.st_size+1); // this is not going to be freed
30 if (st.st_size!=read(fd, text, st.st_size)) {
31 ERROR("can't read file", filepath);
32 close(fd);
33 return 0;
34 }
35 close(fd);
36 text[st.st_size]='\0';
37 *end = text + st.st_size;
38 return text;
39 }
40
dump(const cn_cbor * cb,char * out,char ** end,int indent)41 static void dump(const cn_cbor* cb, char* out, char** end, int indent) {
42 if (!cb)
43 goto done;
44 int i;
45 cn_cbor* cp;
46 char finchar = ')'; /* most likely */
47
48 #define CPY(s, l) memcpy(out, s, l); out += l;
49 #define OUT(s) CPY(s, sizeof(s)-1)
50 #define PRF(f, a) out += sprintf(out, f, a)
51
52 for (i = 0; i < indent; i++) *out++ = ' ';
53 switch (cb->type) {
54 case CN_CBOR_TEXT_CHUNKED: OUT("(_\n"); goto sequence;
55 case CN_CBOR_BYTES_CHUNKED: OUT("(_\n\n"); goto sequence;
56 case CN_CBOR_TAG: PRF("%ld(\n", cb->v.sint); goto sequence;
57 case CN_CBOR_ARRAY: finchar = ']'; OUT("[\n"); goto sequence;
58 case CN_CBOR_MAP: finchar = '}'; OUT("{\n"); goto sequence;
59 sequence:
60 for (cp = cb->first_child; cp; cp = cp->next) {
61 dump(cp, out, &out, indent+2);
62 }
63 for (i=0; i<indent; i++) *out++ = ' ';
64 *out++ = finchar;
65 break;
66 case CN_CBOR_BYTES: OUT("h'");
67 for (i=0; i<cb->length; i++)
68 PRF("%02x", cb->v.str[i] & 0xff);
69 *out++ = '\'';
70 break;
71 case CN_CBOR_TEXT: *out++ = '"';
72 CPY(cb->v.str, cb->length); /* should escape stuff */
73 *out++ = '"';
74 break;
75 case CN_CBOR_NULL: OUT("null"); break;
76 case CN_CBOR_TRUE: OUT("true"); break;
77 case CN_CBOR_FALSE: OUT("false"); break;
78 case CN_CBOR_UNDEF: OUT("simple(23)"); break;
79 case CN_CBOR_INT: PRF("%ld", cb->v.sint); break;
80 case CN_CBOR_UINT: PRF("%lu", cb->v.uint); break;
81 case CN_CBOR_DOUBLE: PRF("%e", cb->v.dbl); break;
82 case CN_CBOR_SIMPLE: PRF("simple(%ld)", cb->v.sint); break;
83 default: PRF("???%d???", cb->type); break;
84 }
85 *out++ = '\n';
86 done:
87 *end = out;
88 }
89
90
91 const char *err_name[] = {
92 "CN_CBOR_NO_ERROR",
93 "CN_CBOR_ERR_OUT_OF_DATA",
94 "CN_CBOR_ERR_NOT_ALL_DATA_CONSUMED",
95 "CN_CBOR_ERR_ODD_SIZE_INDEF_MAP",
96 "CN_CBOR_ERR_BREAK_OUTSIDE_INDEF",
97 "CN_CBOR_ERR_MT_UNDEF_FOR_INDEF",
98 "CN_CBOR_ERR_RESERVED_AI",
99 "CN_CBOR_ERR_WRONG_NESTING_IN_INDEF_STRING",
100 "CN_CBOR_ERR_OUT_OF_MEMORY",
101 "CN_CBOR_ERR_FLOAT_NOT_SUPPORTED",
102 };
103
cn_cbor_decode_test(const unsigned char * buf,int len)104 static void cn_cbor_decode_test(const unsigned char *buf, int len) {
105 struct cn_cbor_errback back;
106 const cn_cbor *ret = cn_cbor_decode(buf, len CBOR_CONTEXT_PARAM, &back);
107 if (ret)
108 printf("oops 1");
109 printf("%s at %d\n", err_name[back.err], back.pos);
110 }
111
main()112 int main() {
113 char buf[100000];
114 unsigned char *end;
115 char *bufend;
116 unsigned char *s = load_file("cases.cbor", &end);
117 printf("%zd\n", end-s);
118 cn_cbor *cb = cn_cbor_decode(s, end-s CBOR_CONTEXT_PARAM, 0);
119 if (cb) {
120 dump(cb, buf, &bufend, 0);
121 *bufend = 0;
122 printf("%s\n", buf);
123 cn_cbor_free(cb CBOR_CONTEXT_PARAM);
124 cb = 0; /* for leaks testing */
125 }
126 cn_cbor_decode_test((const unsigned char*)"\xff", 1); /* break outside indef */
127 cn_cbor_decode_test((const unsigned char*)"\x1f", 1); /* mt undef for indef */
128 cn_cbor_decode_test((const unsigned char*)"\x00\x00", 2); /* not all data consumed */
129 cn_cbor_decode_test((const unsigned char*)"\x81", 1); /* out of data */
130 cn_cbor_decode_test((const unsigned char*)"\x1c", 1); /* reserved ai */
131 cn_cbor_decode_test((const unsigned char*)"\xbf\x00\xff", 3); /* odd size indef map */
132 cn_cbor_decode_test((const unsigned char*)"\x7f\x40\xff", 3); /* wrong nesting in indef string */
133 system("leaks test");
134 }
135
136 /* cn-cbor.c:112: CN_CBOR_FAIL("out of memory"); */
137