PostgreSQL Source Code git master
cryptohashfuncs.c File Reference
#include "postgres.h"
#include "common/cryptohash.h"
#include "common/md5.h"
#include "common/sha2.h"
#include "utils/builtins.h"
#include "varatt.h"
Include dependency graph for cryptohashfuncs.c:

Go to the source code of this file.

Macros

#define MD5_HASH_LEN   32
 

Functions

Datum md5_text (PG_FUNCTION_ARGS)
 
Datum md5_bytea (PG_FUNCTION_ARGS)
 
static byteacryptohash_internal (pg_cryptohash_type type, bytea *input)
 
Datum sha224_bytea (PG_FUNCTION_ARGS)
 
Datum sha256_bytea (PG_FUNCTION_ARGS)
 
Datum sha384_bytea (PG_FUNCTION_ARGS)
 
Datum sha512_bytea (PG_FUNCTION_ARGS)
 

Macro Definition Documentation

◆ MD5_HASH_LEN

#define MD5_HASH_LEN   32

Definition at line 28 of file cryptohashfuncs.c.

Function Documentation

◆ cryptohash_internal()

static bytea * cryptohash_internal ( pg_cryptohash_type  type,
bytea input 
)
inlinestatic

Definition at line 80 of file cryptohashfuncs.c.

81{
82 const uint8 *data;
83 const char *typestr = NULL;
84 int digest_len = 0;
85 size_t len;
87 bytea *result;
88
89 switch (type)
90 {
91 case PG_SHA224:
92 typestr = "SHA224";
93 digest_len = PG_SHA224_DIGEST_LENGTH;
94 break;
95 case PG_SHA256:
96 typestr = "SHA256";
97 digest_len = PG_SHA256_DIGEST_LENGTH;
98 break;
99 case PG_SHA384:
100 typestr = "SHA384";
101 digest_len = PG_SHA384_DIGEST_LENGTH;
102 break;
103 case PG_SHA512:
104 typestr = "SHA512";
105 digest_len = PG_SHA512_DIGEST_LENGTH;
106 break;
107 case PG_MD5:
108 case PG_SHA1:
109 elog(ERROR, "unsupported cryptohash type %d", type);
110 break;
111 }
112
113 result = palloc0(digest_len + VARHDRSZ);
115 data = (unsigned char *) VARDATA_ANY(input);
116
118 if (pg_cryptohash_init(ctx) < 0)
119 elog(ERROR, "could not initialize %s context: %s", typestr,
121 if (pg_cryptohash_update(ctx, data, len) < 0)
122 elog(ERROR, "could not update %s context: %s", typestr,
124 if (pg_cryptohash_final(ctx, (unsigned char *) VARDATA(result),
125 digest_len) < 0)
126 elog(ERROR, "could not finalize %s context: %s", typestr,
129
130 SET_VARSIZE(result, digest_len + VARHDRSZ);
131
132 return result;
133}
uint8_t uint8
Definition: c.h:500
#define VARHDRSZ
Definition: c.h:663
const char * pg_cryptohash_error(pg_cryptohash_ctx *ctx)
Definition: cryptohash.c:254
int pg_cryptohash_update(pg_cryptohash_ctx *ctx, const uint8 *data, size_t len)
Definition: cryptohash.c:136
pg_cryptohash_ctx * pg_cryptohash_create(pg_cryptohash_type type)
Definition: cryptohash.c:74
int pg_cryptohash_init(pg_cryptohash_ctx *ctx)
Definition: cryptohash.c:100
void pg_cryptohash_free(pg_cryptohash_ctx *ctx)
Definition: cryptohash.c:238
int pg_cryptohash_final(pg_cryptohash_ctx *ctx, uint8 *dest, size_t len)
Definition: cryptohash.c:172
@ PG_SHA512
Definition: cryptohash.h:26
@ PG_SHA224
Definition: cryptohash.h:23
@ PG_SHA384
Definition: cryptohash.h:25
@ PG_SHA1
Definition: cryptohash.h:22
@ PG_SHA256
Definition: cryptohash.h:24
@ PG_MD5
Definition: cryptohash.h:21
#define ERROR
Definition: elog.h:39
#define elog(elevel,...)
Definition: elog.h:225
FILE * input
void * palloc0(Size size)
Definition: mcxt.c:1347
const void size_t len
const void * data
#define PG_SHA256_DIGEST_LENGTH
Definition: sha2.h:23
#define PG_SHA384_DIGEST_LENGTH
Definition: sha2.h:26
#define PG_SHA512_DIGEST_LENGTH
Definition: sha2.h:29
#define PG_SHA224_DIGEST_LENGTH
Definition: sha2.h:20
Definition: c.h:658
#define VARDATA(PTR)
Definition: varatt.h:278
#define VARDATA_ANY(PTR)
Definition: varatt.h:324
#define SET_VARSIZE(PTR, len)
Definition: varatt.h:305
#define VARSIZE_ANY_EXHDR(PTR)
Definition: varatt.h:317
const char * type

References data, elog, ERROR, input, len, palloc0(), pg_cryptohash_create(), pg_cryptohash_error(), pg_cryptohash_final(), pg_cryptohash_free(), pg_cryptohash_init(), pg_cryptohash_update(), PG_MD5, PG_SHA1, PG_SHA224, PG_SHA224_DIGEST_LENGTH, PG_SHA256, PG_SHA256_DIGEST_LENGTH, PG_SHA384, PG_SHA384_DIGEST_LENGTH, PG_SHA512, PG_SHA512_DIGEST_LENGTH, SET_VARSIZE, type, VARDATA, VARDATA_ANY, VARHDRSZ, and VARSIZE_ANY_EXHDR.

Referenced by sha224_bytea(), sha256_bytea(), sha384_bytea(), and sha512_bytea().

◆ md5_bytea()

Datum md5_bytea ( PG_FUNCTION_ARGS  )

Definition at line 59 of file cryptohashfuncs.c.

60{
62 size_t len;
63 char hexsum[MD5_HASH_LEN + 1];
64 const char *errstr = NULL;
65
67 if (pg_md5_hash(VARDATA_ANY(in), len, hexsum, &errstr) == false)
69 (errcode(ERRCODE_INTERNAL_ERROR),
70 errmsg("could not compute %s hash: %s", "MD5",
71 errstr)));
72
74}
#define MD5_HASH_LEN
int errcode(int sqlerrcode)
Definition: elog.c:853
int errmsg(const char *fmt,...)
Definition: elog.c:1070
#define ereport(elevel,...)
Definition: elog.h:149
#define PG_GETARG_BYTEA_PP(n)
Definition: fmgr.h:308
#define PG_RETURN_TEXT_P(x)
Definition: fmgr.h:372
bool pg_md5_hash(const void *buff, size_t len, char *hexsum, const char **errstr)
Definition: md5_common.c:74
text * cstring_to_text(const char *s)
Definition: varlena.c:192

References cstring_to_text(), ereport, errcode(), errmsg(), ERROR, len, MD5_HASH_LEN, PG_GETARG_BYTEA_PP, pg_md5_hash(), PG_RETURN_TEXT_P, VARDATA_ANY, and VARSIZE_ANY_EXHDR.

◆ md5_text()

Datum md5_text ( PG_FUNCTION_ARGS  )

Definition at line 34 of file cryptohashfuncs.c.

35{
36 text *in_text = PG_GETARG_TEXT_PP(0);
37 size_t len;
38 char hexsum[MD5_HASH_LEN + 1];
39 const char *errstr = NULL;
40
41 /* Calculate the length of the buffer using varlena metadata */
42 len = VARSIZE_ANY_EXHDR(in_text);
43
44 /* get the hash result */
45 if (pg_md5_hash(VARDATA_ANY(in_text), len, hexsum, &errstr) == false)
47 (errcode(ERRCODE_INTERNAL_ERROR),
48 errmsg("could not compute %s hash: %s", "MD5",
49 errstr)));
50
51 /* convert to text and return it */
53}
#define PG_GETARG_TEXT_PP(n)
Definition: fmgr.h:309

References cstring_to_text(), ereport, errcode(), errmsg(), ERROR, len, MD5_HASH_LEN, PG_GETARG_TEXT_PP, pg_md5_hash(), PG_RETURN_TEXT_P, VARDATA_ANY, and VARSIZE_ANY_EXHDR.

◆ sha224_bytea()

Datum sha224_bytea ( PG_FUNCTION_ARGS  )

Definition at line 140 of file cryptohashfuncs.c.

141{
143
144 PG_RETURN_BYTEA_P(result);
145}
static bytea * cryptohash_internal(pg_cryptohash_type type, bytea *input)
#define PG_RETURN_BYTEA_P(x)
Definition: fmgr.h:371

References cryptohash_internal(), PG_GETARG_BYTEA_PP, PG_RETURN_BYTEA_P, and PG_SHA224.

◆ sha256_bytea()

Datum sha256_bytea ( PG_FUNCTION_ARGS  )

Definition at line 148 of file cryptohashfuncs.c.

149{
151
152 PG_RETURN_BYTEA_P(result);
153}

References cryptohash_internal(), PG_GETARG_BYTEA_PP, PG_RETURN_BYTEA_P, and PG_SHA256.

◆ sha384_bytea()

Datum sha384_bytea ( PG_FUNCTION_ARGS  )

Definition at line 156 of file cryptohashfuncs.c.

157{
159
160 PG_RETURN_BYTEA_P(result);
161}

References cryptohash_internal(), PG_GETARG_BYTEA_PP, PG_RETURN_BYTEA_P, and PG_SHA384.

◆ sha512_bytea()

Datum sha512_bytea ( PG_FUNCTION_ARGS  )

Definition at line 164 of file cryptohashfuncs.c.

165{
167
168 PG_RETURN_BYTEA_P(result);
169}

References cryptohash_internal(), PG_GETARG_BYTEA_PP, PG_RETURN_BYTEA_P, and PG_SHA512.