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git/gpg-interface.h
Junio C Hamano fd2d4c135e gpg-interface: lazily initialize and read the configuration
Instead of forcing the porcelain commands to always read the
configuration variables related to the signing and verifying
signatures, lazily initialize the necessary subsystem on demand upon
the first use.

This hopefully would make it more future-proof as we do not have to
think and decide whether we should call git_gpg_config() in the
git_config() callback for each command.

A few git_config() callback functions that used to be custom
callbacks are now just a thin wrapper around git_default_config().
We could further remove, git_FOO_config and replace calls to
git_config(git_FOO_config) with git_config(git_default_config), but
to make it clear which ones are affected and the effect is only the
removal of git_gpg_config(), it is vastly preferred not to do such a
change in this step (they can be done on top once the dust settled).

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-02-09 17:01:27 -08:00

96 lines
2.4 KiB
C

#ifndef GPG_INTERFACE_H
#define GPG_INTERFACE_H
struct strbuf;
#define GPG_VERIFY_VERBOSE 1
#define GPG_VERIFY_RAW 2
#define GPG_VERIFY_OMIT_STATUS 4
enum signature_trust_level {
TRUST_UNDEFINED,
TRUST_NEVER,
TRUST_MARGINAL,
TRUST_FULLY,
TRUST_ULTIMATE,
};
enum payload_type {
SIGNATURE_PAYLOAD_UNDEFINED,
SIGNATURE_PAYLOAD_COMMIT,
SIGNATURE_PAYLOAD_TAG,
SIGNATURE_PAYLOAD_PUSH_CERT,
};
struct signature_check {
char *payload;
size_t payload_len;
enum payload_type payload_type;
timestamp_t payload_timestamp;
char *output;
char *gpg_status;
/*
* possible "result":
* 0 (not checked)
* N (checked but no further result)
* G (good)
* B (bad)
*/
char result;
char *signer;
char *key;
char *fingerprint;
char *primary_key_fingerprint;
enum signature_trust_level trust_level;
};
void signature_check_clear(struct signature_check *sigc);
/*
* Look at a GPG signed tag object. If such a signature exists, store it in
* signature and the signed content in payload. Return 1 if a signature was
* found, and 0 otherwise.
*/
int parse_signature(const char *buf, size_t size, struct strbuf *payload, struct strbuf *signature);
/*
* Look at GPG signed content (e.g. a signed tag object), whose
* payload is followed by a detached signature on it. Return the
* offset where the embedded detached signature begins, or the end of
* the data when there is no such signature.
*/
size_t parse_signed_buffer(const char *buf, size_t size);
/*
* Create a detached signature for the contents of "buffer" and append
* it after "signature"; "buffer" and "signature" can be the same
* strbuf instance, which would cause the detached signature appended
* at the end.
*/
int sign_buffer(struct strbuf *buffer, struct strbuf *signature,
const char *signing_key);
/*
* Returns corresponding string in lowercase for a given member of
* enum signature_trust_level. For example, `TRUST_ULTIMATE` will
* return "ultimate".
*/
const char *gpg_trust_level_to_str(enum signature_trust_level level);
void set_signing_key(const char *);
const char *get_signing_key(void);
/*
* Returns a textual unique representation of the signing key in use
* Either a GPG KeyID or a SSH Key Fingerprint
*/
const char *get_signing_key_id(void);
int check_signature(struct signature_check *sigc,
const char *signature, size_t slen);
void print_signature_buffer(const struct signature_check *sigc,
unsigned flags);
#endif