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

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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
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4
contrib/postgres_fdw/connection.c
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@ -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)