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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
37 lines
1.2 KiB
C
37 lines
1.2 KiB
C
/*-------------------------------------------------------------------------
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*
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* md5.h
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* Constants and common utilities related to MD5.
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*
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* These definitions are needed by both frontend and backend code to work
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* with MD5-encrypted passwords.
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*
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* Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/common/md5.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PG_MD5_H
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#define PG_MD5_H
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/* Size of result generated by MD5 computation */
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#define MD5_DIGEST_LENGTH 16
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/* Block size for MD5 */
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#define MD5_BLOCK_SIZE 64
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/* password-related data */
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#define MD5_PASSWD_CHARSET "0123456789abcdef"
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#define MD5_PASSWD_LEN 35
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/* Utilities common to all the MD5 implementations, as of md5_common.c */
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extern bool pg_md5_hash(const void *buff, size_t len, char *hexsum,
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const char **errstr);
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extern bool pg_md5_binary(const void *buff, size_t len, uint8 *outbuf,
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const char **errstr);
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extern bool pg_md5_encrypt(const char *passwd, const uint8 *salt,
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size_t salt_len, char *buf,
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const char **errstr);
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#endif /* PG_MD5_H */
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