GNUnet 0.21.2
Functions
json_generator.c File Reference

helper functions for generating JSON from GNUnet data structures More...

#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_json_lib.h"
Include dependency graph for json_generator.c:

Go to the source code of this file.

Functions

json_t * GNUNET_JSON_from_data (const void *data, size_t size)
 Convert binary data to a JSON string with the base32crockford encoding. More...
 
json_t * GNUNET_JSON_from_data64 (const void *data, size_t size)
 Convert binary data to a JSON string with base64 encoding. More...
 
json_t * GNUNET_JSON_from_timestamp (struct GNUNET_TIME_Timestamp stamp)
 Convert timestamp to a json string. More...
 
json_t * GNUNET_JSON_from_timestamp_nbo (struct GNUNET_TIME_TimestampNBO stamp)
 Convert timestamp to a json string. More...
 
json_t * GNUNET_JSON_from_time_rel (struct GNUNET_TIME_Relative stamp)
 Convert relative timestamp to a json string. More...
 
json_t * GNUNET_JSON_from_rsa_public_key (const struct GNUNET_CRYPTO_RsaPublicKey *pk)
 Convert RSA public key to JSON. More...
 
json_t * GNUNET_JSON_from_rsa_signature (const struct GNUNET_CRYPTO_RsaSignature *sig)
 Convert RSA signature to JSON. More...
 

Detailed Description

helper functions for generating JSON from GNUnet data structures

Author
Sree Harsha Totakura sreeh.nosp@m.arsh.nosp@m.a@tot.nosp@m.akur.nosp@m.a.in

Definition in file json_generator.c.

Function Documentation

◆ GNUNET_JSON_from_data()

json_t * GNUNET_JSON_from_data ( const void *  data,
size_t  size 
)

Convert binary data to a JSON string with the base32crockford encoding.

Parameters
databinary data
sizesize of data in bytes
Returns
json string that encodes data

Definition at line 31 of file json_generator.c.

33{
34 char *buf;
35 json_t *json;
36
37 if (size >= ( (GNUNET_MAX_MALLOC_CHECKED - 1) * 5) - 4 / 8)
38 {
39 GNUNET_break (0);
40 return NULL;
41 }
42 buf = GNUNET_STRINGS_data_to_string_alloc (data,
43 size);
44 json = json_string (buf);
45 GNUNET_free (buf);
46 GNUNET_break (NULL != json);
47 return json;
48}
data
static char * data
The data to insert into the dht.
Definition: gnunet-dht-put.c:88
GNUNET_break
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur.
Definition: gnunet_common.h:1062
GNUNET_MAX_MALLOC_CHECKED
#define GNUNET_MAX_MALLOC_CHECKED
Maximum allocation with GNUNET_malloc macro.
Definition: gnunet_common.h:1247
GNUNET_free
#define GNUNET_free(ptr)
Wrapper around free.
Definition: gnunet_common.h:1458
GNUNET_STRINGS_data_to_string_alloc
char * GNUNET_STRINGS_data_to_string_alloc(const void *buf, size_t size)
Return the base32crockford encoding of the given buffer.
Definition: strings.c:764
size
static unsigned int size
Size of the "table".
Definition: peer.c:68

References data, GNUNET_break, GNUNET_free, GNUNET_MAX_MALLOC_CHECKED, GNUNET_STRINGS_data_to_string_alloc(), and size.

Referenced by GNUNET_JSON_from_rsa_public_key(), GNUNET_JSON_from_rsa_signature(), and GNUNET_JSON_pack_data_varsize().

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◆ GNUNET_JSON_from_data64()

json_t * GNUNET_JSON_from_data64 ( const void *  data,
size_t  size 
)

Convert binary data to a JSON string with base64 encoding.

Parameters
databinary data
sizesize of data in bytes
Returns
json string that encodes data

Definition at line 52 of file json_generator.c.

54{
55 char *buf = NULL;
56 json_t *json;
57 size_t len;
58
59 if (size >= ( ( (GNUNET_MAX_MALLOC_CHECKED - 1) * 6) - 5) / 8)
60 {
61 GNUNET_break (0);
62 return NULL;
63 }
64 len = GNUNET_STRINGS_base64_encode (data,
65 size,
66 &buf);
67 if (NULL == buf)
68 {
69 GNUNET_break (0);
70 return NULL;
71 }
72 json = json_stringn (buf,
73 len);
74 GNUNET_free (buf);
75 GNUNET_break (NULL != json);
76 return json;
77}
GNUNET_STRINGS_base64_encode
size_t GNUNET_STRINGS_base64_encode(const void *in, size_t len, char **output)
Encode into Base64.
Definition: strings.c:1622

References data, GNUNET_break, GNUNET_free, GNUNET_MAX_MALLOC_CHECKED, GNUNET_STRINGS_base64_encode(), and size.

Referenced by GNUNET_JSON_pack_data64_varsize().

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◆ GNUNET_JSON_from_timestamp()

json_t * GNUNET_JSON_from_timestamp ( struct GNUNET_TIME_Timestamp  stamp)

Convert timestamp to a json string.

Parameters
stampthe time stamp
Returns
a json string with the timestamp in stamp

Definition at line 81 of file json_generator.c.

82{
83 json_t *j;
84
85 j = json_object ();
86 if (NULL == j)
87 {
88 GNUNET_break (0);
89 return NULL;
90 }
91 if (GNUNET_TIME_absolute_is_never (stamp.abs_time))
92 {
93 if (0 !=
94 json_object_set_new (j,
95 "t_s",
96 json_string ("never")))
97 {
98 GNUNET_break (0);
99 json_decref (j);
100 return NULL;
101 }
102 return j;
103 }
104 GNUNET_assert (
105 0 ==
106 (stamp.abs_time.abs_value_us
107 % GNUNET_TIME_UNIT_SECONDS.rel_value_us));
108 if (0 !=
109 json_object_set_new (
110 j,
111 "t_s",
112 json_integer (
113 (json_int_t) (stamp.abs_time.abs_value_us
114 / GNUNET_TIME_UNIT_SECONDS.rel_value_us))))
115 {
116 GNUNET_break (0);
117 json_decref (j);
118 return NULL;
119 }
120 return j;
121}
GNUNET_assert
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
Definition: gnunet_common.h:977
GNUNET_TIME_UNIT_SECONDS
#define GNUNET_TIME_UNIT_SECONDS
One second.
Definition: gnunet_time_lib.h:150
GNUNET_TIME_absolute_is_never
bool GNUNET_TIME_absolute_is_never(struct GNUNET_TIME_Absolute abs)
Test if abs is never.
Definition: time.c:648
GNUNET_TIME_Absolute::abs_value_us
uint64_t abs_value_us
The actual value.
Definition: gnunet_time_lib.h:58
GNUNET_TIME_Timestamp::abs_time
struct GNUNET_TIME_Absolute abs_time
The actual value.
Definition: gnunet_time_lib.h:69

References GNUNET_TIME_Timestamp::abs_time, GNUNET_TIME_Absolute::abs_value_us, GNUNET_assert, GNUNET_break, GNUNET_TIME_absolute_is_never(), and GNUNET_TIME_UNIT_SECONDS.

Referenced by GNUNET_JSON_from_timestamp_nbo(), and GNUNET_JSON_pack_timestamp().

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◆ GNUNET_JSON_from_timestamp_nbo()

json_t * GNUNET_JSON_from_timestamp_nbo ( struct GNUNET_TIME_TimestampNBO  stamp)

Convert timestamp to a json string.

Parameters
stampthe time stamp
Returns
a json string with the timestamp in stamp

Definition at line 125 of file json_generator.c.

126{
127 return GNUNET_JSON_from_timestamp (GNUNET_TIME_timestamp_ntoh (stamp));
128}
GNUNET_TIME_timestamp_ntoh
struct GNUNET_TIME_Timestamp GNUNET_TIME_timestamp_ntoh(struct GNUNET_TIME_TimestampNBO tn)
Convert timestamp from network byte order.
Definition: time.c:101
GNUNET_JSON_from_timestamp
json_t * GNUNET_JSON_from_timestamp(struct GNUNET_TIME_Timestamp stamp)
Convert timestamp to a json string.
Definition: json_generator.c:81

References GNUNET_JSON_from_timestamp(), and GNUNET_TIME_timestamp_ntoh().

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◆ GNUNET_JSON_from_time_rel()

json_t * GNUNET_JSON_from_time_rel ( struct GNUNET_TIME_Relative  stamp)

Convert relative timestamp to a json string.

Parameters
stampthe time stamp
Returns
a json string with the timestamp in stamp

Definition at line 132 of file json_generator.c.

133{
134 json_t *j;
135
136 j = json_object ();
137 if (NULL == j)
138 {
139 GNUNET_break (0);
140 return NULL;
141 }
142 if (GNUNET_TIME_relative_is_forever (stamp))
143 {
144 if (0 !=
145 json_object_set_new (j,
146 "d_us",
147 json_string ("forever")))
148 {
149 GNUNET_break (0);
150 json_decref (j);
151 return NULL;
152 }
153 return j;
154 }
155 if (stamp.rel_value_us >= (1LLU << 53))
156 {
157 /* value is larger than allowed */
158 GNUNET_break (0);
159 return NULL;
160 }
161 if (0 !=
162 json_object_set_new (
163 j,
164 "d_us",
165 json_integer ((json_int_t) stamp.rel_value_us)))
166 {
167 GNUNET_break (0);
168 json_decref (j);
169 return NULL;
170 }
171 return j;
172}
GNUNET_TIME_relative_is_forever
bool GNUNET_TIME_relative_is_forever(struct GNUNET_TIME_Relative rel)
Test if rel is forever.
Definition: time.c:655
GNUNET_TIME_Relative::rel_value_us
uint64_t rel_value_us
The actual value.
Definition: gnunet_time_lib.h:81

References GNUNET_break, GNUNET_TIME_relative_is_forever(), and GNUNET_TIME_Relative::rel_value_us.

Referenced by GNUNET_JSON_pack_time_rel().

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◆ GNUNET_JSON_from_rsa_public_key()

json_t * GNUNET_JSON_from_rsa_public_key ( const struct GNUNET_CRYPTO_RsaPublicKey *  pk)

Convert RSA public key to JSON.

Parameters
pkpublic key to convert
Returns
corresponding JSON encoding

Definition at line 176 of file json_generator.c.

177{
178 void *buf;
179 size_t buf_len;
180 json_t *ret;
181
182 buf_len = GNUNET_CRYPTO_rsa_public_key_encode (pk,
183 &buf);
184 ret = GNUNET_JSON_from_data (buf,
185 buf_len);
186 GNUNET_free (buf);
187 return ret;
188}
ret
static int ret
Final status code.
Definition: gnunet-arm.c:94
pk
struct GNUNET_CRYPTO_PrivateKey pk
Private key from command line option, or NULL.
Definition: gnunet-identity.c:126
GNUNET_CRYPTO_rsa_public_key_encode
size_t GNUNET_CRYPTO_rsa_public_key_encode(const struct GNUNET_CRYPTO_RsaPublicKey *key, void **buffer)
Encode the public key in a format suitable for storing it into a file.
Definition: crypto_rsa.c:325
GNUNET_JSON_from_data
json_t * GNUNET_JSON_from_data(const void *data, size_t size)
Convert binary data to a JSON string with the base32crockford encoding.
Definition: json_generator.c:31

References GNUNET_CRYPTO_rsa_public_key_encode(), GNUNET_free, GNUNET_JSON_from_data(), pk, and ret.

Referenced by GNUNET_JSON_pack_rsa_public_key().

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◆ GNUNET_JSON_from_rsa_signature()

json_t * GNUNET_JSON_from_rsa_signature ( const struct GNUNET_CRYPTO_RsaSignature *  sig)

Convert RSA signature to JSON.

Parameters
sigsignature to convert
Returns
corresponding JSON encoding

Definition at line 192 of file json_generator.c.

193{
194 void *buf;
195 size_t buf_len;
196 json_t *ret;
197
198 buf_len = GNUNET_CRYPTO_rsa_signature_encode (sig,
199 &buf);
200 ret = GNUNET_JSON_from_data (buf,
201 buf_len);
202 GNUNET_free (buf);
203 return ret;
204}
GNUNET_CRYPTO_rsa_signature_encode
size_t GNUNET_CRYPTO_rsa_signature_encode(const struct GNUNET_CRYPTO_RsaSignature *sig, void **buffer)
Encode the given signature in a format suitable for storing it into a file.
Definition: crypto_rsa.c:1023

References GNUNET_CRYPTO_rsa_signature_encode(), GNUNET_free, GNUNET_JSON_from_data(), and ret.

Referenced by GNUNET_JSON_pack_rsa_signature().

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