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px-crypt.c File Reference
#include "postgres.h"
#include "px-crypt.h"
#include "px.h"
Include dependency graph for px-crypt.c:

Go to the source code of this file.

Data Structures

struct  px_crypt_algo
 
struct  generator
 

Functions

static char * run_crypt_des (const char *psw, const char *salt, char *buf, unsigned len)
 
static char * run_crypt_md5 (const char *psw, const char *salt, char *buf, unsigned len)
 
static char * run_crypt_bf (const char *psw, const char *salt, char *buf, unsigned len)
 
char * px_crypt (const char *psw, const char *salt, char *buf, unsigned len)
 
int px_gen_salt (const char *salt_type, char *buf, int rounds)
 

Variables

static const struct px_crypt_algo px_crypt_list []
 
static struct generator gen_list []
 

Function Documentation

◆ px_crypt()

char * px_crypt ( const char *  psw,
const char *  salt,
char *  buf,
unsigned  len 
)

Definition at line 90 of file px-crypt.c.

91{
92 const struct px_crypt_algo *c;
93
95
96 for (c = px_crypt_list; c->id; c++)
97 {
98 if (!c->id_len)
99 break;
100 if (strncmp(salt, c->id, c->id_len) == 0)
101 break;
102 }
103
104 if (c->crypt == NULL)
105 return NULL;
106
107 return c->crypt(psw, salt, buf, len);
108}
void CheckBuiltinCryptoMode(void)
Definition: openssl.c:874
const void size_t len
static char * buf
Definition: pg_test_fsync.c:72
char * c
static const struct px_crypt_algo px_crypt_list[]
Definition: px-crypt.c:79
char * id
Definition: px-crypt.c:72

References buf, CheckBuiltinCryptoMode(), px_crypt_algo::id, len, and px_crypt_list.

Referenced by pg_crypt().

◆ px_gen_salt()

int px_gen_salt ( const char *  salt_type,
char *  buf,
int  rounds 
)

Definition at line 134 of file px-crypt.c.

135{
136 struct generator *g;
137 char *p;
138 char rbuf[16];
139
141
142 for (g = gen_list; g->name; g++)
143 if (pg_strcasecmp(g->name, salt_type) == 0)
144 break;
145
146 if (g->name == NULL)
148
149 if (g->def_rounds)
150 {
151 if (rounds == 0)
152 rounds = g->def_rounds;
153
154 if (rounds < g->min_rounds || rounds > g->max_rounds)
155 return PXE_BAD_SALT_ROUNDS;
156 }
157
158 if (!pg_strong_random(rbuf, g->input_len))
159 return PXE_NO_RANDOM;
160
161 p = g->gen(rounds, rbuf, g->input_len, buf, PX_MAX_SALT_LEN);
162 px_memset(rbuf, 0, sizeof(rbuf));
163
164 if (p == NULL)
165 return PXE_BAD_SALT_ROUNDS;
166
167 return strlen(p);
168}
bool pg_strong_random(void *buf, size_t len)
int pg_strcasecmp(const char *s1, const char *s2)
Definition: pgstrcasecmp.c:36
static struct generator gen_list[]
Definition: px-crypt.c:125
#define PX_MAX_SALT_LEN
Definition: px-crypt.h:39
void px_memset(void *ptr, int c, size_t len)
Definition: px.c:123
#define PXE_BAD_SALT_ROUNDS
Definition: px.h:61
#define PXE_NO_RANDOM
Definition: px.h:63
#define PXE_UNKNOWN_SALT_ALGO
Definition: px.h:60
int input_len
Definition: px-crypt.c:119
int max_rounds
Definition: px-crypt.c:122
char *(* gen)(unsigned long count, const char *input, int size, char *output, int output_size)
Definition: px-crypt.c:117
int def_rounds
Definition: px-crypt.c:120
char * name
Definition: px-crypt.c:116
int min_rounds
Definition: px-crypt.c:121

References buf, CheckBuiltinCryptoMode(), generator::def_rounds, generator::gen, gen_list, generator::input_len, generator::max_rounds, generator::min_rounds, generator::name, pg_strcasecmp(), pg_strong_random(), PX_MAX_SALT_LEN, px_memset(), PXE_BAD_SALT_ROUNDS, PXE_NO_RANDOM, and PXE_UNKNOWN_SALT_ALGO.

Referenced by pg_gen_salt(), and pg_gen_salt_rounds().

◆ run_crypt_bf()

static char * run_crypt_bf ( const char *  psw,
const char *  salt,
char *  buf,
unsigned  len 
)
static

Definition at line 61 of file px-crypt.c.

63{
64 char *res;
65
66 res = _crypt_blowfish_rn(psw, salt, buf, len);
67 return res;
68}
char * _crypt_blowfish_rn(const char *key, const char *setting, char *output, int size)

References _crypt_blowfish_rn(), buf, and len.

◆ run_crypt_des()

static char * run_crypt_des ( const char *  psw,
const char *  salt,
char *  buf,
unsigned  len 
)
static

Definition at line 38 of file px-crypt.c.

40{
41 char *res;
42
43 res = px_crypt_des(psw, salt);
44 if (res == NULL || strlen(res) > len - 1)
45 return NULL;
46 strcpy(buf, res);
47 return buf;
48}
char * px_crypt_des(const char *key, const char *setting)
Definition: crypt-des.c:651

References buf, len, and px_crypt_des().

◆ run_crypt_md5()

static char * run_crypt_md5 ( const char *  psw,
const char *  salt,
char *  buf,
unsigned  len 
)
static

Definition at line 51 of file px-crypt.c.

53{
54 char *res;
55
56 res = px_crypt_md5(psw, salt, buf, len);
57 return res;
58}
char * px_crypt_md5(const char *pw, const char *salt, char *passwd, unsigned dstlen)
Definition: crypt-md5.c:34

References buf, len, and px_crypt_md5().

Variable Documentation

◆ gen_list

struct generator gen_list[]
static
Initial value:
= {
{"des", _crypt_gensalt_traditional_rn, 2, 0, 0, 0},
{"md5", _crypt_gensalt_md5_rn, 6, 0, 0, 0},
{"xdes", _crypt_gensalt_extended_rn, 3, PX_XDES_ROUNDS, 1, 0xFFFFFF},
{NULL, NULL, 0, 0, 0, 0}
}
char * _crypt_gensalt_traditional_rn(unsigned long count, const char *input, int size, char *output, int output_size)
Definition: crypt-gensalt.c:25
char * _crypt_gensalt_md5_rn(unsigned long count, const char *input, int size, char *output, int output_size)
Definition: crypt-gensalt.c:79
char * _crypt_gensalt_blowfish_rn(unsigned long count, const char *input, int size, char *output, int output_size)
char * _crypt_gensalt_extended_rn(unsigned long count, const char *input, int size, char *output, int output_size)
Definition: crypt-gensalt.c:43
#define PX_BF_ROUNDS
Definition: px-crypt.h:46
#define PX_XDES_ROUNDS
Definition: px-crypt.h:43

Definition at line 125 of file px-crypt.c.

Referenced by px_gen_salt().

◆ px_crypt_list

const struct px_crypt_algo px_crypt_list[]
static
Initial value:
= {
{"$2a$", 4, run_crypt_bf},
{"$2x$", 4, run_crypt_bf},
{"$2$", 3, NULL},
{"$1$", 3, run_crypt_md5},
{"_", 1, run_crypt_des},
{"", 0, run_crypt_des},
{NULL, 0, NULL}
}
static char * run_crypt_des(const char *psw, const char *salt, char *buf, unsigned len)
Definition: px-crypt.c:38
static char * run_crypt_bf(const char *psw, const char *salt, char *buf, unsigned len)
Definition: px-crypt.c:61
static char * run_crypt_md5(const char *psw, const char *salt, char *buf, unsigned len)
Definition: px-crypt.c:51

Definition at line 79 of file px-crypt.c.

Referenced by px_crypt().