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abfbff61ef
The command "git tag -s" internally calls sign_buffer() to make a cryptographic signature using the chosen backend like GPG and SSH. The internal helper functions used by "git tag" implementation seem to use a "negative return values are errors, zero or positive return values are not" convention, and there are places (e.g., verify_tag() that calls gpg_verify_tag()) that these internal helper functions translate return values that signal errors to conform to this convention, but do_sign() that calls sign_buffer() forgets to do so. Fix it, so that a failed call to sign_buffer() that can return the exit status from pipe_command() will not be overlooked. Reported-by: Sergey Kosukhin <skosukhin@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
96 lines
2.4 KiB
C
96 lines
2.4 KiB
C
#ifndef GPG_INTERFACE_H
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#define GPG_INTERFACE_H
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struct strbuf;
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#define GPG_VERIFY_VERBOSE 1
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#define GPG_VERIFY_RAW 2
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#define GPG_VERIFY_OMIT_STATUS 4
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enum signature_trust_level {
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TRUST_UNDEFINED,
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TRUST_NEVER,
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TRUST_MARGINAL,
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TRUST_FULLY,
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TRUST_ULTIMATE,
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};
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enum payload_type {
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SIGNATURE_PAYLOAD_UNDEFINED,
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SIGNATURE_PAYLOAD_COMMIT,
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SIGNATURE_PAYLOAD_TAG,
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SIGNATURE_PAYLOAD_PUSH_CERT,
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};
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struct signature_check {
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char *payload;
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size_t payload_len;
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enum payload_type payload_type;
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timestamp_t payload_timestamp;
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char *output;
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char *gpg_status;
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/*
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* possible "result":
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* 0 (not checked)
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* N (checked but no further result)
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* G (good)
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* B (bad)
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*/
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char result;
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char *signer;
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char *key;
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char *fingerprint;
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char *primary_key_fingerprint;
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enum signature_trust_level trust_level;
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};
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void signature_check_clear(struct signature_check *sigc);
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/*
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* Look at a GPG signed tag object. If such a signature exists, store it in
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* signature and the signed content in payload. Return 1 if a signature was
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* found, and 0 otherwise.
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*/
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int parse_signature(const char *buf, size_t size, struct strbuf *payload, struct strbuf *signature);
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/*
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* Look at GPG signed content (e.g. a signed tag object), whose
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* payload is followed by a detached signature on it. Return the
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* offset where the embedded detached signature begins, or the end of
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* the data when there is no such signature.
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*/
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size_t parse_signed_buffer(const char *buf, size_t size);
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/*
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* Create a detached signature for the contents of "buffer" and append
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* it after "signature"; "buffer" and "signature" can be the same
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* strbuf instance, which would cause the detached signature appended
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* at the end. Returns 0 on success, non-zero on failure.
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*/
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int sign_buffer(struct strbuf *buffer, struct strbuf *signature,
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const char *signing_key);
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/*
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* Returns corresponding string in lowercase for a given member of
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* enum signature_trust_level. For example, `TRUST_ULTIMATE` will
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* return "ultimate".
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*/
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const char *gpg_trust_level_to_str(enum signature_trust_level level);
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void set_signing_key(const char *);
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const char *get_signing_key(void);
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/*
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* Returns a textual unique representation of the signing key in use
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* Either a GPG KeyID or a SSH Key Fingerprint
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*/
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const char *get_signing_key_id(void);
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int check_signature(struct signature_check *sigc,
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const char *signature, size_t slen);
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void print_signature_buffer(const struct signature_check *sigc,
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unsigned flags);
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#endif
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