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author | Vincent Ambo <mail@tazj.in> | 2021-09-21T10·03+0300 |
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committer | Vincent Ambo <mail@tazj.in> | 2021-09-21T11·29+0300 |
commit | 43b1791ec601732ac31195df96781a848360a9ac (patch) | |
tree | daae8d638343295d2f1f7da955e556ef4c958864 /third_party/git/builtin/mktag.c | |
parent | 2d8e7dc9d9c38127ec4ebd13aee8e8f586a43318 (diff) |
chore(3p/git): Unvendor git and track patches instead r/2903
This was vendored a long time ago under the expectation that keeping it in sync with cgit would be easier this way, but it has proven not to be a big issue. On the other hand, a vendored copy of git is an annoying maintenance burden. It is much easier to rebase the single (dottime) patch that we have. This removes the vendored copy of git and instead passes the git source code to cgit via `pkgs.srcOnly`, which includes the applied patch so that cgit can continue rendering dottime. Change-Id: If31f62dea7ce688fd1b9050204e9378019775f2b
Diffstat (limited to 'third_party/git/builtin/mktag.c')
-rw-r--r-- | third_party/git/builtin/mktag.c | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/third_party/git/builtin/mktag.c b/third_party/git/builtin/mktag.c deleted file mode 100644 index 4982d3a93efb..000000000000 --- a/third_party/git/builtin/mktag.c +++ /dev/null @@ -1,179 +0,0 @@ -#include "builtin.h" -#include "tag.h" -#include "replace-object.h" -#include "object-store.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 four lines are guaranteed to be at least 83 bytes: - * "object <sha1>\n" is 48 bytes, "type tag\n" at 9 bytes is the - * shortest possible type-line, "tag .\n" at 6 bytes is the shortest - * single-character-tag line, and "tagger . <> 0 +0000\n" at 20 bytes is - * the shortest possible tagger-line. - */ - -/* - * We refuse to tag something we can't verify. Just because. - */ -static int verify_object(const struct object_id *oid, const char *expected_type) -{ - int ret = -1; - enum object_type type; - unsigned long size; - void *buffer = read_object_file(oid, &type, &size); - const struct object_id *repl = lookup_replace_object(the_repository, oid); - - if (buffer) { - if (type == type_from_string(expected_type)) { - ret = check_object_signature(the_repository, repl, - buffer, size, - expected_type); - } - free(buffer); - } - return ret; -} - -static int verify_tag(char *buffer, unsigned long size) -{ - int typelen; - char type[20]; - struct object_id oid; - const char *object, *type_line, *tag_line, *tagger_line, *lb, *rb, *p; - size_t len; - - if (size < 84) - 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 (parse_oid_hex(object + 7, &oid, &p)) - return error("char%d: could not get SHA1 hash", 7); - - /* Verify type line */ - type_line = p + 1; - 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%"PRIuMAX": could not find next \"\\n\"", - (uintmax_t) (type_line - buffer)); - tag_line++; - if (memcmp(tag_line, "tag ", 4) || tag_line[4] == '\n') - return error("char%"PRIuMAX": no \"tag \" found", - (uintmax_t) (tag_line - buffer)); - - /* Get the actual type */ - typelen = tag_line - type_line - strlen("type \n"); - if (typelen >= sizeof(type)) - return error("char%"PRIuMAX": type too long", - (uintmax_t) (type_line+5 - buffer)); - - memcpy(type, type_line+5, typelen); - type[typelen] = 0; - - /* Verify that the object matches */ - if (verify_object(&oid, type)) - return error("char%d: could not verify object %s", 7, oid_to_hex(&oid)); - - /* 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%"PRIuMAX": could not verify tag name", - (uintmax_t) (tag_line - buffer)); - } - - /* Verify the tagger line */ - tagger_line = tag_line; - - if (memcmp(tagger_line, "tagger ", 7)) - return error("char%"PRIuMAX": could not find \"tagger \"", - (uintmax_t) (tagger_line - buffer)); - - /* - * Check for correct form for name and email - * i.e. " <" followed by "> " on _this_ line - * No angle brackets within the name or email address fields. - * No spaces within the email address field. - */ - tagger_line += 7; - if (!(lb = strstr(tagger_line, " <")) || !(rb = strstr(lb+2, "> ")) || - strpbrk(tagger_line, "<>\n") != lb+1 || - strpbrk(lb+2, "><\n ") != rb) - return error("char%"PRIuMAX": malformed tagger field", - (uintmax_t) (tagger_line - buffer)); - - /* Check for author name, at least one character, space is acceptable */ - if (lb == tagger_line) - return error("char%"PRIuMAX": missing tagger name", - (uintmax_t) (tagger_line - buffer)); - - /* timestamp, 1 or more digits followed by space */ - tagger_line = rb + 2; - if (!(len = strspn(tagger_line, "0123456789"))) - return error("char%"PRIuMAX": missing tag timestamp", - (uintmax_t) (tagger_line - buffer)); - tagger_line += len; - if (*tagger_line != ' ') - return error("char%"PRIuMAX": malformed tag timestamp", - (uintmax_t) (tagger_line - buffer)); - tagger_line++; - - /* timezone, 5 digits [+-]hhmm, max. 1400 */ - if (!((tagger_line[0] == '+' || tagger_line[0] == '-') && - strspn(tagger_line+1, "0123456789") == 4 && - tagger_line[5] == '\n' && atoi(tagger_line+1) <= 1400)) - return error("char%"PRIuMAX": malformed tag timezone", - (uintmax_t) (tagger_line - buffer)); - tagger_line += 6; - - /* Verify the blank line separating the header from the body */ - if (*tagger_line != '\n') - return error("char%"PRIuMAX": trailing garbage in tag header", - (uintmax_t) (tagger_line - buffer)); - - /* The actual stuff afterwards we don't care about.. */ - return 0; -} - -int cmd_mktag(int argc, const char **argv, const char *prefix) -{ - struct strbuf buf = STRBUF_INIT; - struct object_id result; - - if (argc != 1) - usage("git mktag"); - - if (strbuf_read(&buf, 0, 4096) < 0) { - die_errno("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_object_file(buf.buf, buf.len, tag_type, &result) < 0) - die("unable to write tag file"); - - strbuf_release(&buf); - printf("%s\n", oid_to_hex(&result)); - return 0; -} |