Diffstat (limited to 'ui-snapshot.c')
| -rw-r--r-- | ui-snapshot.c | 323 |
1 files changed, 26 insertions, 297 deletions
diff --git a/ui-snapshot.c b/ui-snapshot.c index d157222..2257d6b 100644 --- a/ui-snapshot.c +++ b/ui-snapshot.c @@ -1,318 +1,47 @@ /* ui-snapshot.c: generate snapshot of a commit * - * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com> + * Copyright (C) 2006 Lars Hjemli * * Licensed under GNU General Public License v2 * (see COPYING for full license text) */ -#define USE_THE_REPOSITORY_VARIABLE - #include "cgit.h" -#include "ui-snapshot.h" -#include "html.h" -#include "ui-shared.h" - -static int write_archive_type(const char *format, const char *hex, const char *prefix) -{ - struct strvec argv = STRVEC_INIT; - const char **nargv; - int result; - strvec_push(&argv, "snapshot"); - strvec_push(&argv, format); - if (prefix) { - struct strbuf buf = STRBUF_INIT; - strbuf_addstr(&buf, prefix); - strbuf_addch(&buf, '/'); - strvec_push(&argv, "--prefix"); - strvec_push(&argv, buf.buf); - strbuf_release(&buf); - } - strvec_push(&argv, hex); - /* - * Now we need to copy the pointers to arguments into a new - * structure because write_archive will rearrange its arguments - * which may result in duplicated/missing entries causing leaks - * or double-frees in strvec_clear. - */ - nargv = xmalloc(sizeof(char *) * (argv.nr + 1)); - /* strvec guarantees a trailing NULL entry. */ - memcpy(nargv, argv.v, sizeof(char *) * (argv.nr + 1)); - - result = write_archive(argv.nr, nargv, NULL, the_repository, NULL, 0); - strvec_clear(&argv); - free(nargv); - return result; -} - -static int write_tar_archive(const char *hex, const char *prefix) -{ - return write_archive_type("--format=tar", hex, prefix); -} - -static int write_zip_archive(const char *hex, const char *prefix) -{ - return write_archive_type("--format=zip", hex, prefix); -} - -static int write_compressed_tar_archive(const char *hex, - const char *prefix, - char *filter_argv[]) -{ - int rv; - struct cgit_exec_filter f; - cgit_exec_filter_init(&f, filter_argv[0], filter_argv); - - cgit_open_filter(&f.base); - rv = write_tar_archive(hex, prefix); - cgit_close_filter(&f.base); - return rv; -} - -static int write_tar_gzip_archive(const char *hex, const char *prefix) -{ - char *argv[] = { "gzip", "-n", NULL }; - return write_compressed_tar_archive(hex, prefix, argv); -} - -static int write_tar_bzip2_archive(const char *hex, const char *prefix) -{ - char *argv[] = { "bzip2", NULL }; - return write_compressed_tar_archive(hex, prefix, argv); -} - -static int write_tar_lzip_archive(const char *hex, const char *prefix) -{ - char *argv[] = { "lzip", NULL }; - return write_compressed_tar_archive(hex, prefix, argv); -} - -static int write_tar_xz_archive(const char *hex, const char *prefix) -{ - char *argv[] = { "xz", NULL }; - return write_compressed_tar_archive(hex, prefix, argv); -} - -static int write_tar_zstd_archive(const char *hex, const char *prefix) -{ - char *argv[] = { "zstd", "-T0", NULL }; - return write_compressed_tar_archive(hex, prefix, argv); -} - -const struct cgit_snapshot_format cgit_snapshot_formats[] = { - /* .tar must remain the 0 index */ - { ".tar", "application/x-tar", write_tar_archive }, - { ".tar.gz", "application/x-gzip", write_tar_gzip_archive }, - { ".tar.bz2", "application/x-bzip2", write_tar_bzip2_archive }, - { ".tar.lz", "application/x-lzip", write_tar_lzip_archive }, - { ".tar.xz", "application/x-xz", write_tar_xz_archive }, - { ".tar.zst", "application/x-zstd", write_tar_zstd_archive }, - { ".zip", "application/x-zip", write_zip_archive }, - { NULL } -}; - -static struct notes_tree snapshot_sig_notes[ARRAY_SIZE(cgit_snapshot_formats)]; - -const struct object_id *cgit_snapshot_get_sig(const char *ref, - const struct cgit_snapshot_format *f) -{ - struct notes_tree *tree; - struct object_id oid; - - if (repo_get_oid(the_repository, ref, &oid)) - return NULL; - - tree = &snapshot_sig_notes[f - &cgit_snapshot_formats[0]]; - if (!tree->initialized) { - struct strbuf notes_ref = STRBUF_INIT; - - strbuf_addf(¬es_ref, "refs/notes/signatures/%s", - f->suffix + 1); - - init_notes(tree, notes_ref.buf, combine_notes_ignore, 0); - strbuf_release(¬es_ref); - } - - return get_note(tree, &oid); -} - -static const struct cgit_snapshot_format *get_format(const char *filename) -{ - const struct cgit_snapshot_format *fmt; - for (fmt = cgit_snapshot_formats; fmt->suffix; fmt++) { - if (ends_with(filename, fmt->suffix)) - return fmt; - } - return NULL; -} - -const unsigned cgit_snapshot_format_bit(const struct cgit_snapshot_format *f) -{ - return BIT(f - &cgit_snapshot_formats[0]); -} - -static int make_snapshot(const struct cgit_snapshot_format *format, - const char *hex, const char *prefix, - const char *filename) -{ - struct object_id oid; - - if (repo_get_oid(the_repository, hex, &oid)) { - cgit_print_error_page(404, "Not found", - "Bad object id: %s", hex); - return 1; - } - if (!lookup_commit_reference(the_repository, &oid)) { - cgit_print_error_page(400, "Bad request", - "Not a commit reference: %s", hex); - return 1; - } - ctx.page.etag = oid_to_hex(&oid); - ctx.page.mimetype = xstrdup(format->mimetype); - ctx.page.filename = xstrdup(filename); - cgit_print_http_headers(); - init_archivers(); - format->write_func(hex, prefix); - return 0; -} - -static int write_sig(const struct cgit_snapshot_format *format, - const char *hex, const char *archive, - const char *filename) -{ - const struct object_id *note = cgit_snapshot_get_sig(hex, format); - enum object_type type; - unsigned long size; - char *buf; - - if (!note) { - cgit_print_error_page(404, "Not found", - "No signature for %s", archive); - return 0; - } - - buf = odb_read_object(the_repository->objects, note, &type, &size); - if (!buf) { - cgit_print_error_page(404, "Not found", "Not found"); - return 0; - } - - html("X-Content-Type-Options: nosniff\n"); - html("Content-Security-Policy: default-src 'none'\n"); - ctx.page.etag = oid_to_hex(note); - ctx.page.mimetype = xstrdup("application/pgp-signature"); - ctx.page.filename = xstrdup(filename); - cgit_print_http_headers(); - - html_raw(buf, size); - free(buf); - return 0; -} - -/* Try to guess the requested revision from the requested snapshot name. - * First the format extension is stripped, e.g. "cgit-0.7.2.tar.gz" become - * "cgit-0.7.2". If this is a valid commit object name we've got a winner. - * Otherwise, if the snapshot name has a prefix matching the result from - * repo_basename(), we strip the basename and any following '-' and '_' - * characters ("cgit-0.7.2" -> "0.7.2") and check the resulting name once - * more. If this still isn't a valid commit object name, we check if pre- - * pending a 'v' or a 'V' to the remaining snapshot name ("0.7.2" -> - * "v0.7.2") gives us something valid. - */ -static const char *get_ref_from_filename(const struct cgit_repo *repo, - const char *filename, - const struct cgit_snapshot_format *format) -{ - const char *reponame; - struct object_id oid; - struct strbuf snapshot = STRBUF_INIT; - int result = 1; - - strbuf_addstr(&snapshot, filename); - strbuf_setlen(&snapshot, snapshot.len - strlen(format->suffix)); - - if (repo_get_oid(the_repository, snapshot.buf, &oid) == 0) - goto out; - - reponame = cgit_snapshot_prefix(repo); - if (starts_with(snapshot.buf, reponame)) { - const char *new_start = snapshot.buf; - new_start += strlen(reponame); - while (new_start && (*new_start == '-' || *new_start == '_')) - new_start++; - strbuf_splice(&snapshot, 0, new_start - snapshot.buf, "", 0); - } - - if (repo_get_oid(the_repository, snapshot.buf, &oid) == 0) - goto out; - - strbuf_insert(&snapshot, 0, "v", 1); - if (repo_get_oid(the_repository, snapshot.buf, &oid) == 0) - goto out; - - strbuf_splice(&snapshot, 0, 1, "V", 1); - if (repo_get_oid(the_repository, snapshot.buf, &oid) == 0) - goto out; - - result = 0; - strbuf_release(&snapshot); - -out: - return result ? strbuf_detach(&snapshot, NULL) : NULL; -} - -void cgit_print_snapshot(const char *head, const char *hex, - const char *filename, int dwim) +static void cgit_print_zip(struct cacheitem *item, const char *hex, + const char *prefix, const char *filename) { - const struct cgit_snapshot_format* f; - const char *sig_filename = NULL; - char *adj_filename = NULL; - char *prefix = NULL; + struct archiver_args args; + struct commit *commit; + unsigned char sha1[20]; - if (!filename) { - cgit_print_error_page(400, "Bad request", - "No snapshot name specified"); + if (get_sha1(hex, sha1)) { + cgit_print_error(fmt("Bad object id: %s", hex)); return; } + commit = lookup_commit_reference(sha1); - if (ends_with(filename, ".asc")) { - sig_filename = filename; - - /* Strip ".asc" from filename for common format processing */ - adj_filename = xstrdup(filename); - adj_filename[strlen(adj_filename) - 4] = '\0'; - filename = adj_filename; - } - - f = get_format(filename); - if (!f || (!sig_filename && !(ctx.repo->snapshots & cgit_snapshot_format_bit(f)))) { - cgit_print_error_page(400, "Bad request", - "Unsupported snapshot format: %s", filename); + if (!commit) { + cgit_print_error(fmt("Not a commit reference: %s", hex)); return; } - if (!hex && dwim) { - hex = get_ref_from_filename(ctx.repo, filename, f); - if (hex == NULL) { - cgit_print_error_page(404, "Not found", "Not found"); - return; - } - prefix = xstrdup(filename); - prefix[strlen(filename) - strlen(f->suffix)] = '\0'; - } - - if (!hex) - hex = head; + memset(&args, 0, sizeof(args)); + args.base = fmt("%s/", prefix); + args.tree = commit->tree; + + cgit_print_snapshot_start("application/x-zip", filename, item); + write_zip_archive(&args); +} - if (!prefix) - prefix = xstrdup(cgit_snapshot_prefix(ctx.repo)); - if (sig_filename) - write_sig(f, hex, filename, sig_filename); +void cgit_print_snapshot(struct cacheitem *item, const char *hex, + const char *format, const char *prefix, + const char *filename) +{ + if (!strcmp(format, "zip")) + cgit_print_zip(item, hex, prefix, filename); else - make_snapshot(f, hex, prefix, filename); - - free(prefix); - free(adj_filename); + cgit_print_error(fmt("Unsupported snapshot format: %s", + format)); } |