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Use 'void *' for arbitrary buffers, 'uint8 *' for byte arrays

Browse Source 
A 'void *' argument suggests that the caller might pass an arbitrary
struct, which is appropriate for functions like libc's read/write, or
pq_sendbytes(). 'uint8 *' is more appropriate for byte arrays that
have no structure, like the cancellation keys or SCRAM tokens. Some
places used 'char *', but 'uint8 *' is better because 'char *' is
commonly used for null-terminated strings. Change code around SCRAM,
MD5 authentication, and cancellation key handling to follow these
conventions.

Discussion: https://www.postgresql.org/message-id/61be9e31-7b7d-49d5-bc11-721800d89d64@eisentraut.org
This commit is contained in:
Heikki Linnakangas 2025-05-08 22:01:25 +03:00
parent 965213d9c5
commit b28c59a6cd
24 changed files with 80 additions and 80 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
contrib/dblink/dblink.c
View File

@ -3218,7 +3218,7 @@ appendSCRAMKeysInfo(StringInfo buf)
len = pg_b64_enc_len(sizeof(MyProcPort->scram_ClientKey));
/* don't forget the zero-terminator */
client_key = palloc0(len + 1);
encoded_len = pg_b64_encode((const char *) MyProcPort->scram_ClientKey,
encoded_len = pg_b64_encode(MyProcPort->scram_ClientKey,
sizeof(MyProcPort->scram_ClientKey),
client_key, len);
if (encoded_len < 0)
@ -3227,7 +3227,7 @@ appendSCRAMKeysInfo(StringInfo buf)
len = pg_b64_enc_len(sizeof(MyProcPort->scram_ServerKey));
/* don't forget the zero-terminator */
server_key = palloc0(len + 1);
encoded_len = pg_b64_encode((const char *) MyProcPort->scram_ServerKey,
encoded_len = pg_b64_encode(MyProcPort->scram_ServerKey,
sizeof(MyProcPort->scram_ServerKey),
server_key, len);
if (encoded_len < 0)

4
contrib/postgres_fdw/connection.c
View File

@ -577,7 +577,7 @@ connect_pg_server(ForeignServer *server, UserMapping *user)
len = pg_b64_enc_len(sizeof(MyProcPort->scram_ClientKey));
/* don't forget the zero-terminator */
values[n] = palloc0(len + 1);
encoded_len = pg_b64_encode((const char *) MyProcPort->scram_ClientKey,
encoded_len = pg_b64_encode(MyProcPort->scram_ClientKey,
sizeof(MyProcPort->scram_ClientKey),
(char *) values[n], len);
if (encoded_len < 0)
@ -588,7 +588,7 @@ connect_pg_server(ForeignServer *server, UserMapping *user)
len = pg_b64_enc_len(sizeof(MyProcPort->scram_ServerKey));
/* don't forget the zero-terminator */
values[n] = palloc0(len + 1);
encoded_len = pg_b64_encode((const char *) MyProcPort->scram_ServerKey,
encoded_len = pg_b64_encode(MyProcPort->scram_ServerKey,
sizeof(MyProcPort->scram_ServerKey),
(char *) values[n], len);
if (encoded_len < 0)

32
src/backend/libpq/auth-scram.c
View File

@ -158,7 +158,7 @@ typedef struct
/* Fields from the last message from client */
char *client_final_message_without_proof;
char *client_final_nonce;
char ClientProof[SCRAM_MAX_KEY_LEN];
uint8 ClientProof[SCRAM_MAX_KEY_LEN];
/* Fields generated in the server */
char *server_first_message;
@ -186,9 +186,9 @@ static void mock_scram_secret(const char *username, pg_cryptohash_type *hash_typ
static bool is_scram_printable(char *p);
static char *sanitize_char(char c);
static char *sanitize_str(const char *s);
static char *scram_mock_salt(const char *username,
pg_cryptohash_type hash_type,
int key_length);
static uint8 *scram_mock_salt(const char *username,
pg_cryptohash_type hash_type,
int key_length);
/*
* The number of iterations to use when generating new secrets.
@ -484,7 +484,7 @@ pg_be_scram_build_secret(const char *password)
{
char *prep_password;
pg_saslprep_rc rc;
char saltbuf[SCRAM_DEFAULT_SALT_LEN];
uint8 saltbuf[SCRAM_DEFAULT_SALT_LEN];
char *result;
const char *errstr = NULL;
@ -524,7 +524,7 @@ scram_verify_plain_password(const char *username, const char *password,
const char *secret)
{
char *encoded_salt;
char *salt;
uint8 *salt;
int saltlen;
int iterations;
int key_length = 0;
@ -609,9 +609,9 @@ parse_scram_secret(const char *secret, int *iterations,
char *storedkey_str;
char *serverkey_str;
int decoded_len;
char *decoded_salt_buf;
char *decoded_stored_buf;
char *decoded_server_buf;
uint8 *decoded_salt_buf;
uint8 *decoded_stored_buf;
uint8 *decoded_server_buf;
/*
* The secret is of form:
@ -698,7 +698,7 @@ mock_scram_secret(const char *username, pg_cryptohash_type *hash_type,
int *iterations, int *key_length, char **salt,
uint8 *stored_key, uint8 *server_key)
{
char *raw_salt;
uint8 *raw_salt;
char *encoded_salt;
int encoded_len;
@ -1231,7 +1231,7 @@ build_server_first_message(scram_state *state)
* For convenience, however, we don't use the whole range available,
* rather, we generate some random bytes, and base64 encode them.
*/
char raw_nonce[SCRAM_RAW_NONCE_LEN];
uint8 raw_nonce[SCRAM_RAW_NONCE_LEN];
int encoded_len;
if (!pg_strong_random(raw_nonce, SCRAM_RAW_NONCE_LEN))
@ -1271,7 +1271,7 @@ read_client_final_message(scram_state *state, const char *input)
char *begin,
*proof;
char *p;
char *client_proof;
uint8 *client_proof;
int client_proof_len;
begin = p = pstrdup(input);
@ -1340,7 +1340,7 @@ read_client_final_message(scram_state *state, const char *input)
b64_message_len = pg_b64_enc_len(cbind_input_len);
/* don't forget the zero-terminator */
b64_message = palloc(b64_message_len + 1);
b64_message_len = pg_b64_encode(cbind_input, cbind_input_len,
b64_message_len = pg_b64_encode((uint8 *) cbind_input, cbind_input_len,
b64_message, b64_message_len);
if (b64_message_len < 0)
elog(ERROR, "could not encode channel binding data");
@ -1440,7 +1440,7 @@ build_server_final_message(scram_state *state)
siglen = pg_b64_enc_len(state->key_length);
/* don't forget the zero-terminator */
server_signature_base64 = palloc(siglen + 1);
siglen = pg_b64_encode((const char *) ServerSignature,
siglen = pg_b64_encode(ServerSignature,
state->key_length, server_signature_base64,
siglen);
if (siglen < 0)
@ -1467,7 +1467,7 @@ build_server_final_message(scram_state *state)
* hash based on the username and a cluster-level secret key. Returns a
* pointer to a static buffer of size SCRAM_DEFAULT_SALT_LEN, or NULL.
*/
static char *
static uint8 *
scram_mock_salt(const char *username, pg_cryptohash_type hash_type,
int key_length)
{
@ -1501,5 +1501,5 @@ scram_mock_salt(const char *username, pg_cryptohash_type hash_type,
}
pg_cryptohash_free(ctx);
return (char *) sha_digest;
return sha_digest;
}

4
src/backend/libpq/auth.c
View File

@ -666,7 +666,7 @@ ClientAuthentication(Port *port)
* Send an authentication request packet to the frontend.
*/
void
sendAuthRequest(Port *port, AuthRequest areq, const char *extradata, int extralen)
sendAuthRequest(Port *port, AuthRequest areq, const void *extradata, int extralen)
{
StringInfoData buf;
@ -874,7 +874,7 @@ CheckPWChallengeAuth(Port *port, const char **logdetail)
static int
CheckMD5Auth(Port *port, char *shadow_pass, const char **logdetail)
{
char md5Salt[4]; /* Password salt */
uint8 md5Salt[4]; /* Password salt */
char *passwd;
int result;

6
src/backend/libpq/crypt.c
View File

@ -136,7 +136,7 @@ encrypt_password(PasswordType target_type, const char *role,
case PASSWORD_TYPE_MD5:
encrypted_password = palloc(MD5_PASSWD_LEN + 1);
if (!pg_md5_encrypt(password, role, strlen(role),
if (!pg_md5_encrypt(password, (uint8 *) role, strlen(role),
encrypted_password, &errstr))
elog(ERROR, "password encryption failed: %s", errstr);
break;
@ -201,7 +201,7 @@ encrypt_password(PasswordType target_type, const char *role,
int
md5_crypt_verify(const char *role, const char *shadow_pass,
const char *client_pass,
const char *md5_salt, int md5_salt_len,
const uint8 *md5_salt, int md5_salt_len,
const char **logdetail)
{
int retval;
@ -284,7 +284,7 @@ plain_crypt_verify(const char *role, const char *shadow_pass,
case PASSWORD_TYPE_MD5:
if (!pg_md5_encrypt(client_pass,
role,
(uint8 *) role,
strlen(role),
crypt_client_pass,
&errstr))

6
src/backend/storage/ipc/procsignal.c
View File

@ -64,7 +64,7 @@ typedef struct
{
pg_atomic_uint32 pss_pid;
int pss_cancel_key_len; /* 0 means no cancellation is possible */
char pss_cancel_key[MAX_CANCEL_KEY_LENGTH];
uint8 pss_cancel_key[MAX_CANCEL_KEY_LENGTH];
volatile sig_atomic_t pss_signalFlags[NUM_PROCSIGNALS];
slock_t pss_mutex; /* protects the above fields */
@ -163,7 +163,7 @@ ProcSignalShmemInit(void)
* Register the current process in the ProcSignal array
*/
void
ProcSignalInit(char *cancel_key, int cancel_key_len)
ProcSignalInit(const uint8 *cancel_key, int cancel_key_len)
{
ProcSignalSlot *slot;
uint64 barrier_generation;
@ -729,7 +729,7 @@ procsignal_sigusr1_handler(SIGNAL_ARGS)
* fields in the ProcSignal slots.
*/
void
SendCancelRequest(int backendPID, char *cancel_key, int cancel_key_len)
SendCancelRequest(int backendPID, const uint8 *cancel_key, int cancel_key_len)
{
Assert(backendPID != 0);

2
src/backend/utils/init/globals.c
View File

@ -50,7 +50,7 @@ pg_time_t MyStartTime;
TimestampTz MyStartTimestamp;
struct ClientSocket *MyClientSocket;
struct Port *MyProcPort;
char MyCancelKey[MAX_CANCEL_KEY_LENGTH];
uint8 MyCancelKey[MAX_CANCEL_KEY_LENGTH];
int MyCancelKeyLength = 0;
int MyPMChildSlot;

16
src/common/base64.c
View File

@ -41,15 +41,15 @@ static const int8 b64lookup[128] = {
/*
* pg_b64_encode
*
* Encode into base64 the given string. Returns the length of the encoded
* string, and -1 in the event of an error with the result buffer zeroed
* for safety.
* Encode the 'src' byte array into base64. Returns the length of the encoded
* string, and -1 in the event of an error with the result buffer zeroed for
* safety.
*/
int
pg_b64_encode(const char *src, int len, char *dst, int dstlen)
pg_b64_encode(const uint8 *src, int len, char *dst, int dstlen)
{
char *p;
const char *s,
const uint8 *s,
*end = src + len;
int pos = 2;
uint32 buf = 0;
@ -59,7 +59,7 @@ pg_b64_encode(const char *src, int len, char *dst, int dstlen)
while (s < end)
{
buf |= (unsigned char) *s << (pos << 3);
buf |= *s << (pos << 3);
pos--;
s++;
@ -113,11 +113,11 @@ error:
* buffer zeroed for safety.
*/
int
pg_b64_decode(const char *src, int len, char *dst, int dstlen)
pg_b64_decode(const char *src, int len, uint8 *dst, int dstlen)
{
const char *srcend = src + len,
*s = src;
char *p = dst;
uint8 *p = dst;
char c;
int b = 0;
uint32 buf = 0;

4
src/common/md5_common.c
View File

@ -105,7 +105,7 @@ pg_md5_hash(const void *buff, size_t len, char *hexsum, const char **errstr)
* (of size MD5_DIGEST_LENGTH) rather than being converted to ASCII hex.
*/
bool
pg_md5_binary(const void *buff, size_t len, void *outbuf, const char **errstr)
pg_md5_binary(const void *buff, size_t len, uint8 *outbuf, const char **errstr)
{
pg_cryptohash_ctx *ctx;
@ -142,7 +142,7 @@ pg_md5_binary(const void *buff, size_t len, void *outbuf, const char **errstr)
* error context.
*/
bool
pg_md5_encrypt(const char *passwd, const char *salt, size_t salt_len,
pg_md5_encrypt(const char *passwd, const uint8 *salt, size_t salt_len,
char *buf, const char **errstr)
{
size_t passwd_len = strlen(passwd);

10
src/common/scram-common.c
View File

@ -37,7 +37,7 @@
int
scram_SaltedPassword(const char *password,
pg_cryptohash_type hash_type, int key_length,
const char *salt, int saltlen, int iterations,
const uint8 *salt, int saltlen, int iterations,
uint8 *result, const char **errstr)
{
int password_len = strlen(password);
@ -62,7 +62,7 @@ scram_SaltedPassword(const char *password,
/* First iteration */
if (pg_hmac_init(hmac_ctx, (uint8 *) password, password_len) < 0 ||
pg_hmac_update(hmac_ctx, (uint8 *) salt, saltlen) < 0 ||
pg_hmac_update(hmac_ctx, salt, saltlen) < 0 ||
pg_hmac_update(hmac_ctx, (uint8 *) &one, sizeof(uint32)) < 0 ||
pg_hmac_final(hmac_ctx, Ui_prev, key_length) < 0)
{
@ -207,7 +207,7 @@ scram_ServerKey(const uint8 *salted_password,
*/
char *
scram_build_secret(pg_cryptohash_type hash_type, int key_length,
const char *salt, int saltlen, int iterations,
const uint8 *salt, int saltlen, int iterations,
const char *password, const char **errstr)
{
uint8 salted_password[SCRAM_MAX_KEY_LEN];
@ -290,7 +290,7 @@ scram_build_secret(pg_cryptohash_type hash_type, int key_length,
*(p++) = '$';
/* stored key */
encoded_result = pg_b64_encode((char *) stored_key, key_length, p,
encoded_result = pg_b64_encode(stored_key, key_length, p,
encoded_stored_len);
if (encoded_result < 0)
{
@ -307,7 +307,7 @@ scram_build_secret(pg_cryptohash_type hash_type, int key_length,
*(p++) = ':';
/* server key */
encoded_result = pg_b64_encode((char *) server_key, key_length, p,
encoded_result = pg_b64_encode(server_key, key_length, p,
encoded_server_len);
if (encoded_result < 0)
{

4
src/include/common/base64.h
View File

@ -11,8 +11,8 @@
#define BASE64_H
/* base 64 */
pg_nodiscard extern int pg_b64_encode(const char *src, int len, char *dst, int dstlen);
pg_nodiscard extern int pg_b64_decode(const char *src, int len, char *dst, int dstlen);
pg_nodiscard extern int pg_b64_encode(const uint8 *src, int len, char *dst, int dstlen);
pg_nodiscard extern int pg_b64_decode(const char *src, int len, uint8 *dst, int dstlen);
extern int pg_b64_enc_len(int srclen);
extern int pg_b64_dec_len(int srclen);

4
src/include/common/md5.h
View File

@ -28,9 +28,9 @@
/* Utilities common to all the MD5 implementations, as of md5_common.c */
extern bool pg_md5_hash(const void *buff, size_t len, char *hexsum,
const char **errstr);
extern bool pg_md5_binary(const void *buff, size_t len, void *outbuf,
extern bool pg_md5_binary(const void *buff, size_t len, uint8 *outbuf,
const char **errstr);
extern bool pg_md5_encrypt(const char *passwd, const char *salt,
extern bool pg_md5_encrypt(const char *passwd, const uint8 *salt,
size_t salt_len, char *buf,
const char **errstr);

4
src/include/common/scram-common.h
View File

@ -51,7 +51,7 @@
extern int scram_SaltedPassword(const char *password,
pg_cryptohash_type hash_type, int key_length,
const char *salt, int saltlen, int iterations,
const uint8 *salt, int saltlen, int iterations,
uint8 *result, const char **errstr);
extern int scram_H(const uint8 *input, pg_cryptohash_type hash_type,
int key_length, uint8 *result,
@ -64,7 +64,7 @@ extern int scram_ServerKey(const uint8 *salted_password,
uint8 *result, const char **errstr);
extern char *scram_build_secret(pg_cryptohash_type hash_type, int key_length,
const char *salt, int saltlen, int iterations,
const uint8 *salt, int saltlen, int iterations,
const char *password, const char **errstr);
#endif /* SCRAM_COMMON_H */

2
src/include/libpq/auth.h
View File

@ -37,7 +37,7 @@ extern PGDLLIMPORT bool pg_krb_caseins_users;
extern PGDLLIMPORT bool pg_gss_accept_delegation;
extern void ClientAuthentication(Port *port);
extern void sendAuthRequest(Port *port, AuthRequest areq, const char *extradata,
extern void sendAuthRequest(Port *port, AuthRequest areq, const void *extradata,
int extralen);
extern void set_authn_id(Port *port, const char *id);

2
src/include/libpq/crypt.h
View File

@ -51,7 +51,7 @@ extern char *encrypt_password(PasswordType target_type, const char *role,
extern char *get_role_password(const char *role, const char **logdetail);
extern int md5_crypt_verify(const char *role, const char *shadow_pass,
const char *client_pass, const char *md5_salt,
const char *client_pass, const uint8 *md5_salt,
int md5_salt_len, const char **logdetail);
extern int plain_crypt_verify(const char *role, const char *shadow_pass,
const char *client_pass,

2
src/include/libpq/pqcomm.h
View File

@ -141,7 +141,7 @@ typedef struct CancelRequestPacket
/* Note that each field is stored in network byte order! */
MsgType cancelRequestCode; /* code to identify a cancel request */
uint32 backendPID; /* PID of client's backend */
char cancelAuthCode[FLEXIBLE_ARRAY_MEMBER]; /* secret key to
uint8 cancelAuthCode[FLEXIBLE_ARRAY_MEMBER]; /* secret key to
* authorize cancel */
} CancelRequestPacket;

2
src/include/miscadmin.h
View File

@ -192,7 +192,7 @@ extern PGDLLIMPORT pg_time_t MyStartTime;
extern PGDLLIMPORT TimestampTz MyStartTimestamp;
extern PGDLLIMPORT struct Port *MyProcPort;
extern PGDLLIMPORT struct Latch *MyLatch;
extern PGDLLIMPORT char MyCancelKey[];
extern PGDLLIMPORT uint8 MyCancelKey[];
extern PGDLLIMPORT int MyCancelKeyLength;
extern PGDLLIMPORT int MyPMChildSlot;

4
src/include/storage/procsignal.h
View File

@ -73,10 +73,10 @@ typedef enum
extern Size ProcSignalShmemSize(void);
extern void ProcSignalShmemInit(void);
extern void ProcSignalInit(char *cancel_key, int cancel_key_len);
extern void ProcSignalInit(const uint8 *cancel_key, int cancel_key_len);
extern int SendProcSignal(pid_t pid, ProcSignalReason reason,
ProcNumber procNumber);
extern void SendCancelRequest(int backendPID, char *cancel_key, int cancel_key_len);
extern void SendCancelRequest(int backendPID, const uint8 *cancel_key, int cancel_key_len);
extern uint64 EmitProcSignalBarrier(ProcSignalBarrierType type);
extern void WaitForProcSignalBarrier(uint64 generation);

14
src/interfaces/libpq/fe-auth-scram.c
View File

@ -70,14 +70,14 @@ typedef struct
/* These come from the server-first message */
char *server_first_message;
char *salt;
uint8 *salt;
int saltlen;
int iterations;
char *nonce;
/* These come from the server-final message */
char *server_final_message;
char ServerSignature[SCRAM_MAX_KEY_LEN];
uint8 ServerSignature[SCRAM_MAX_KEY_LEN];
} fe_scram_state;
static bool read_server_first_message(fe_scram_state *state, char *input);
@ -350,7 +350,7 @@ static char *
build_client_first_message(fe_scram_state *state)
{
PGconn *conn = state->conn;
char raw_nonce[SCRAM_RAW_NONCE_LEN + 1];
uint8 raw_nonce[SCRAM_RAW_NONCE_LEN + 1];
char *result;
int channel_info_len;
int encoded_len;
@ -513,7 +513,7 @@ build_client_final_message(fe_scram_state *state)
free(cbind_input);
goto oom_error;
}
encoded_cbind_len = pg_b64_encode(cbind_input, cbind_input_len,
encoded_cbind_len = pg_b64_encode((uint8 *) cbind_input, cbind_input_len,
buf.data + buf.len,
encoded_cbind_len);
if (encoded_cbind_len < 0)
@ -574,7 +574,7 @@ build_client_final_message(fe_scram_state *state)
encoded_len = pg_b64_enc_len(state->key_length);
if (!enlargePQExpBuffer(&buf, encoded_len))
goto oom_error;
encoded_len = pg_b64_encode((char *) client_proof,
encoded_len = pg_b64_encode(client_proof,
state->key_length,
buf.data + buf.len,
encoded_len);
@ -694,7 +694,7 @@ read_server_final_message(fe_scram_state *state, char *input)
{
PGconn *conn = state->conn;
char *encoded_server_signature;
char *decoded_server_signature;
uint8 *decoded_server_signature;
int server_signature_len;
state->server_final_message = strdup(input);
@ -916,7 +916,7 @@ pg_fe_scram_build_secret(const char *password, int iterations, const char **errs
{
char *prep_password;
pg_saslprep_rc rc;
char saltbuf[SCRAM_DEFAULT_SALT_LEN];
uint8 saltbuf[SCRAM_DEFAULT_SALT_LEN];
char *result;
/*

8
src/interfaces/libpq/fe-auth.c
View File

@ -798,7 +798,7 @@ pg_password_sendauth(PGconn *conn, const char *password, AuthRequest areq)
int ret;
char *crypt_pwd = NULL;
const char *pwd_to_send;
char md5Salt[4];
uint8 md5Salt[4];
/* Read the salt from the AuthenticationMD5Password message. */
if (areq == AUTH_REQ_MD5)
@ -829,7 +829,7 @@ pg_password_sendauth(PGconn *conn, const char *password, AuthRequest areq)
}
crypt_pwd2 = crypt_pwd + MD5_PASSWD_LEN + 1;
if (!pg_md5_encrypt(password, conn->pguser,
if (!pg_md5_encrypt(password, (uint8 *) conn->pguser,
strlen(conn->pguser), crypt_pwd2,
&errstr))
{
@ -1369,7 +1369,7 @@ PQencryptPassword(const char *passwd, const char *user)
if (!crypt_pwd)
return NULL;
if (!pg_md5_encrypt(passwd, user, strlen(user), crypt_pwd, &errstr))
if (!pg_md5_encrypt(passwd, (uint8 *) user, strlen(user), crypt_pwd, &errstr))
{
free(crypt_pwd);
return NULL;
@ -1482,7 +1482,7 @@ PQencryptPasswordConn(PGconn *conn, const char *passwd, const char *user,
{
const char *errstr = NULL;
if (!pg_md5_encrypt(passwd, user, strlen(user), crypt_pwd, &errstr))
if (!pg_md5_encrypt(passwd, (uint8 *) user, strlen(user), crypt_pwd, &errstr))
{
libpq_append_conn_error(conn, "could not encrypt password: %s", errstr);
free(crypt_pwd);

2
src/interfaces/libpq/fe-cancel.c
View File

@ -463,7 +463,7 @@ PQsendCancelRequest(PGconn *cancelConn)
memset(&req, 0, offsetof(CancelRequestPacket, cancelAuthCode));
req.cancelRequestCode = (MsgType) pg_hton32(CANCEL_REQUEST_CODE);
req.backendPID = pg_hton32(cancelConn->be_pid);
if (pqPutnchar((char *) &req, offsetof(CancelRequestPacket, cancelAuthCode), cancelConn))
if (pqPutnchar(&req, offsetof(CancelRequestPacket, cancelAuthCode), cancelConn))
return STATUS_ERROR;
if (pqPutnchar(cancelConn->be_cancel_key, cancelConn->be_cancel_key_len, cancelConn))
return STATUS_ERROR;

10
src/interfaces/libpq/fe-misc.c
View File

@ -67,7 +67,7 @@ PQlibVersion(void)
/*
* pqGetc: get 1 character from the connection
* pqGetc: read 1 character from the connection
*
* All these routines return 0 on success, EOF on error.
* Note that for the Get routines, EOF only means there is not enough
@ -100,7 +100,7 @@ pqPutc(char c, PGconn *conn)
/*
* pqGets[_append]:
* get a null-terminated string from the connection,
* read a null-terminated string from the connection,
* and store it in an expansible PQExpBuffer.
* If we run out of memory, all of the string is still read,
* but the excess characters are silently discarded.
@ -159,10 +159,10 @@ pqPuts(const char *s, PGconn *conn)
/*
* pqGetnchar:
* get a string of exactly len bytes in buffer s, no null termination
* read exactly len bytes in buffer s, no null termination
*/
int
pqGetnchar(char *s, size_t len, PGconn *conn)
pqGetnchar(void *s, size_t len, PGconn *conn)
{
if (len > (size_t) (conn->inEnd - conn->inCursor))
return EOF;
@ -199,7 +199,7 @@ pqSkipnchar(size_t len, PGconn *conn)
* write exactly len bytes to the current message
*/
int
pqPutnchar(const char *s, size_t len, PGconn *conn)
pqPutnchar(const void *s, size_t len, PGconn *conn)
{
if (pqPutMsgBytes(s, len, conn))
return EOF;

4
src/interfaces/libpq/fe-protocol3.c
View File

@ -2121,7 +2121,7 @@ pqFunctionCall3(PGconn *conn, Oid fnid,
}
else
{
if (pqPutnchar((char *) args[i].u.ptr, args[i].len, conn))
if (pqPutnchar(args[i].u.ptr, args[i].len, conn))
return NULL;
}
}
@ -2215,7 +2215,7 @@ pqFunctionCall3(PGconn *conn, Oid fnid,
}
else
{
if (pqGetnchar((char *) result_buf,
if (pqGetnchar(result_buf,
*actual_result_len,
conn))
continue;

10
src/interfaces/libpq/libpq-int.h
View File

@ -539,16 +539,16 @@ struct pg_conn
* tried host */
bool send_appname; /* okay to send application_name? */
size_t scram_client_key_len;
void *scram_client_key_binary; /* binary SCRAM client key */
uint8 *scram_client_key_binary; /* binary SCRAM client key */
size_t scram_server_key_len;
void *scram_server_key_binary; /* binary SCRAM server key */
uint8 *scram_server_key_binary; /* binary SCRAM server key */
ProtocolVersion min_pversion; /* protocol version to request */
ProtocolVersion max_pversion; /* protocol version to request */
/* Miscellaneous stuff */
int be_pid; /* PID of backend --- needed for cancels */
int be_cancel_key_len;
char *be_cancel_key; /* query cancellation key and its length */
uint8 *be_cancel_key; /* query cancellation key */
pgParameterStatus *pstatus; /* ParameterStatus data */
int client_encoding; /* encoding id */
bool std_strings; /* standard_conforming_strings */
@ -787,9 +787,9 @@ extern int pqPutc(char c, PGconn *conn);
extern int pqGets(PQExpBuffer buf, PGconn *conn);
extern int pqGets_append(PQExpBuffer buf, PGconn *conn);
extern int pqPuts(const char *s, PGconn *conn);
extern int pqGetnchar(char *s, size_t len, PGconn *conn);
extern int pqGetnchar(void *s, size_t len, PGconn *conn);
extern int pqSkipnchar(size_t len, PGconn *conn);
extern int pqPutnchar(const char *s, size_t len, PGconn *conn);
extern int pqPutnchar(const void *s, size_t len, PGconn *conn);
extern int pqGetInt(int *result, size_t bytes, PGconn *conn);
extern int pqPutInt(int value, size_t bytes, PGconn *conn);
extern int pqPutMsgStart(char msg_type, PGconn *conn);