Staging
v0.8.1
v0.8.1
Revision ff58b9aaf8bf4ce7471a21baa502cb9ddaa9873a authored by Jeff King on 12 February 2008, 05:45:18 UTC, committed by Junio C Hamano on 13 February 2008, 21:54:58 UTC
It makes no sense to suggest "git reset HEAD" since we have no HEAD commit. This actually used to work but regressed in f26a0012. wt_status_print_cached_header was updated to take the whole wt_status struct rather than just the reference field. Previously the various code paths were sometimes sending in s->reference and sometimes sending in NULL, making the decision on whether this was an initial commit before we even got to this function. Now we must check the initial flag here. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 parent 077b725
mktag.c
#include "cache.h"
#include "tag.h"
/*
* A signature file has a very simple fixed format: four lines
* of "object <sha1>" + "type <typename>" + "tag <tagname>" +
* "tagger <committer>", followed by a blank line, a free-form tag
* message and a signature block that git itself doesn't care about,
* but that can be verified with gpg or similar.
*
* The first three lines are guaranteed to be at least 63 bytes:
* "object <sha1>\n" is 48 bytes, "type tag\n" at 9 bytes is the
* shortest possible type-line, and "tag .\n" at 6 bytes is the
* shortest single-character-tag line.
*/
/*
* We refuse to tag something we can't verify. Just because.
*/
static int verify_object(unsigned char *sha1, const char *expected_type)
{
int ret = -1;
enum object_type type;
unsigned long size;
void *buffer = read_sha1_file(sha1, &type, &size);
if (buffer) {
if (type == type_from_string(expected_type))
ret = check_sha1_signature(sha1, buffer, size, expected_type);
free(buffer);
}
return ret;
}
#ifdef NO_C99_FORMAT
#define PD_FMT "%d"
#else
#define PD_FMT "%td"
#endif
static int verify_tag(char *buffer, unsigned long size)
{
int typelen;
char type[20];
unsigned char sha1[20];
const char *object, *type_line, *tag_line, *tagger_line;
if (size < 64)
return error("wanna fool me ? you obviously got the size wrong !");
buffer[size] = 0;
/* Verify object line */
object = buffer;
if (memcmp(object, "object ", 7))
return error("char%d: does not start with \"object \"", 0);
if (get_sha1_hex(object + 7, sha1))
return error("char%d: could not get SHA1 hash", 7);
/* Verify type line */
type_line = object + 48;
if (memcmp(type_line - 1, "\ntype ", 6))
return error("char%d: could not find \"\\ntype \"", 47);
/* Verify tag-line */
tag_line = strchr(type_line, '\n');
if (!tag_line)
return error("char" PD_FMT ": could not find next \"\\n\"", type_line - buffer);
tag_line++;
if (memcmp(tag_line, "tag ", 4) || tag_line[4] == '\n')
return error("char" PD_FMT ": no \"tag \" found", tag_line - buffer);
/* Get the actual type */
typelen = tag_line - type_line - strlen("type \n");
if (typelen >= sizeof(type))
return error("char" PD_FMT ": type too long", type_line+5 - buffer);
memcpy(type, type_line+5, typelen);
type[typelen] = 0;
/* Verify that the object matches */
if (verify_object(sha1, type))
return error("char%d: could not verify object %s", 7, sha1_to_hex(sha1));
/* Verify the tag-name: we don't allow control characters or spaces in it */
tag_line += 4;
for (;;) {
unsigned char c = *tag_line++;
if (c == '\n')
break;
if (c > ' ')
continue;
return error("char" PD_FMT ": could not verify tag name", tag_line - buffer);
}
/* Verify the tagger line */
tagger_line = tag_line;
if (memcmp(tagger_line, "tagger", 6) || (tagger_line[6] == '\n'))
return error("char" PD_FMT ": could not find \"tagger\"", tagger_line - buffer);
/* TODO: check for committer info + blank line? */
/* Also, the minimum length is probably + "tagger .", or 63+8=71 */
/* The actual stuff afterwards we don't care about.. */
return 0;
}
#undef PD_FMT
int main(int argc, char **argv)
{
struct strbuf buf;
unsigned char result_sha1[20];
if (argc != 1)
usage("git-mktag < signaturefile");
setup_git_directory();
strbuf_init(&buf, 0);
if (strbuf_read(&buf, 0, 4096) < 0) {
die("could not read from stdin");
}
/* Verify it for some basic sanity: it needs to start with
"object <sha1>\ntype\ntagger " */
if (verify_tag(buf.buf, buf.len) < 0)
die("invalid tag signature file");
if (write_sha1_file(buf.buf, buf.len, tag_type, result_sha1) < 0)
die("unable to write tag file");
strbuf_release(&buf);
printf("%s\n", sha1_to_hex(result_sha1));
return 0;
}
Computing file changes ...