gpg-interface.h

   1 #ifndef GPG_INTERFACE_H
   2 #define GPG_INTERFACE_H
   3
   4 struct strbuf;
   5
   6 #define GPG_VERIFY_VERBOSE              1
   7 #define GPG_VERIFY_RAW                  2
   8 #define GPG_VERIFY_OMIT_STATUS  4
   9
  10 enum signature_trust_level {
  11         TRUST_UNDEFINED,
  12         TRUST_NEVER,
  13         TRUST_MARGINAL,
  14         TRUST_FULLY,
  15         TRUST_ULTIMATE,
  16 };
  17
  18 struct signature_check {
  19         char *payload;
  20         char *gpg_output;
  21         char *gpg_status;
  22
  23         /*
  24          * possible "result":
  25          * 0 (not checked)
  26          * N (checked but no further result)
  27          * G (good)
  28          * B (bad)
  29          */
  30         char result;
  31         char *signer;
  32         char *key;
  33         char *fingerprint;
  34         char *primary_key_fingerprint;
  35         enum signature_trust_level trust_level;
  36 };
  37
  38 void signature_check_clear(struct signature_check *sigc);
  39
  40 /*
  41  * Look at a GPG signed tag object.  If such a signature exists, store it in
  42  * signature and the signed content in payload.  Return 1 if a signature was
  43  * found, and 0 otherwise.
  44  */
  45 int parse_signature(const char *buf, size_t size, struct strbuf *payload, struct strbuf *signature);
  46
  47 /*
  48  * Look at GPG signed content (e.g. a signed tag object), whose
  49  * payload is followed by a detached signature on it.  Return the
  50  * offset where the embedded detached signature begins, or the end of
  51  * the data when there is no such signature.
  52  */
  53 size_t parse_signed_buffer(const char *buf, size_t size);
  54
  55 /*
  56  * Create a detached signature for the contents of "buffer" and append
  57  * it after "signature"; "buffer" and "signature" can be the same
  58  * strbuf instance, which would cause the detached signature appended
  59  * at the end.
  60  */
  61 int sign_buffer(struct strbuf *buffer, struct strbuf *signature,
  62                 const char *signing_key);
  63
  64 int git_gpg_config(const char *, const char *, void *);
  65 void set_signing_key(const char *);
  66 const char *get_signing_key(void);
  67 int check_signature(const char *payload, size_t plen,
  68                     const char *signature, size_t slen,
  69                     struct signature_check *sigc);
  70 void print_signature_buffer(const struct signature_check *sigc,
  71                             unsigned flags);
  72
  73 #endif