*/
#include "cgit.h"
+#include "html.h"
+#include "ui-shared.h"
-static void cgit_print_zip(struct cacheitem *item, const char *hex,
- const char *prefix, const char *filename)
+static int write_compressed_tar_archive(struct archiver_args *args,const char *filter)
+{
+ int rw[2];
+ pid_t gzpid;
+ int stdout2;
+ int status;
+ int rv;
+
+ stdout2 = chk_non_negative(dup(STDIN_FILENO), "Preserving STDOUT before compressing");
+ chk_zero(pipe(rw), "Opening pipe from compressor subprocess");
+ gzpid = chk_non_negative(fork(), "Forking compressor subprocess");
+ if(gzpid==0) {
+ /* child */
+ chk_zero(close(rw[1]), "Closing write end of pipe in child");
+ chk_zero(close(STDIN_FILENO), "Closing STDIN");
+ chk_non_negative(dup2(rw[0],STDIN_FILENO), "Redirecting compressor input to stdin");
+ execlp(filter,filter,NULL);
+ _exit(-1);
+ }
+ /* parent */
+ chk_zero(close(rw[0]), "Closing read end of pipe");
+ chk_non_negative(dup2(rw[1],STDOUT_FILENO), "Redirecting output to compressor");
+
+ rv = write_tar_archive(args);
+
+ chk_zero(close(STDOUT_FILENO), "Closing STDOUT redirected to compressor");
+ chk_non_negative(dup2(stdout2,STDOUT_FILENO), "Restoring uncompressed STDOUT");
+ chk_zero(close(stdout2), "Closing uncompressed STDOUT");
+ chk_zero(close(rw[1]), "Closing write end of pipe in parent");
+ chk_positive(waitpid(gzpid,&status,0), "Waiting on compressor process");
+ if(! ( WIFEXITED(status) && WEXITSTATUS(status)==0 ) )
+ cgit_print_error("Failed to compress archive");
+
+ return rv;
+}
+
+static int write_tar_gzip_archive(struct archiver_args *args)
+{
+ return write_compressed_tar_archive(args,"gzip");
+}
+
+static int write_tar_bzip2_archive(struct archiver_args *args)
+{
+ return write_compressed_tar_archive(args,"bzip2");
+}
+
+const struct cgit_snapshot_format cgit_snapshot_formats[] = {
+ { ".zip", "application/x-zip", write_zip_archive, 0x1 },
+ { ".tar.gz", "application/x-gzip", write_tar_gzip_archive, 0x2 },
+ { ".tar.bz2", "application/x-bzip2", write_tar_bzip2_archive, 0x4 },
+ { ".tar", "application/x-tar", write_tar_archive, 0x8 },
+ {}
+};
+
+static const struct cgit_snapshot_format *get_format(const char *filename)
+{
+ const struct cgit_snapshot_format *fmt;
+ int fl, sl;
+
+ fl = strlen(filename);
+ for(fmt = cgit_snapshot_formats; fmt->suffix; fmt++) {
+ sl = strlen(fmt->suffix);
+ if (sl >= fl)
+ continue;
+ if (!strcmp(fmt->suffix, filename + fl - sl))
+ return fmt;
+ }
+ return NULL;
+}
+
+static int make_snapshot(const struct cgit_snapshot_format *format,
+ const char *hex, const char *prefix,
+ const char *filename)
{
struct archiver_args args;
struct commit *commit;
unsigned char sha1[20];
- if (get_sha1(hex, sha1)) {
+ if(get_sha1(hex, sha1)) {
cgit_print_error(fmt("Bad object id: %s", hex));
- return;
+ return 1;
}
commit = lookup_commit_reference(sha1);
-
- if (!commit) {
+ if(!commit) {
cgit_print_error(fmt("Not a commit reference: %s", hex));
- return;
+ return 1;
}
-
memset(&args, 0, sizeof(args));
- args.base = fmt("%s/", prefix);
+ if (prefix) {
+ args.base = fmt("%s/", prefix);
+ args.baselen = strlen(prefix) + 1;
+ } else {
+ args.base = "";
+ args.baselen = 0;
+ }
args.tree = commit->tree;
-
- cgit_print_snapshot_start("application/x-zip", filename, item);
- write_zip_archive(&args);
+ args.time = commit->date;
+ ctx.page.mimetype = xstrdup(format->mimetype);
+ ctx.page.filename = xstrdup(filename);
+ cgit_print_http_headers(&ctx);
+ format->write_func(&args);
+ 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' to the remaining snapshot name ("0.7.2" -> "v0.7.2") gives
+ * us something valid.
+ */
+static const char *get_ref_from_filename(const char *url, const char *filename,
+ const struct cgit_snapshot_format *format)
+{
+ const char *reponame;
+ unsigned char sha1[20];
+ char *snapshot;
-void cgit_print_snapshot(struct cacheitem *item, const char *hex,
- const char *format, const char *prefix,
- const char *filename)
+ snapshot = xstrdup(filename);
+ snapshot[strlen(snapshot) - strlen(format->suffix)] = '\0';
+ fprintf(stderr, "snapshot=%s\n", snapshot);
+
+ if (get_sha1(snapshot, sha1) == 0)
+ return snapshot;
+
+ reponame = cgit_repobasename(url);
+ fprintf(stderr, "reponame=%s\n", reponame);
+ if (prefixcmp(snapshot, reponame) == 0) {
+ snapshot += strlen(reponame);
+ while (snapshot && (*snapshot == '-' || *snapshot == '_'))
+ snapshot++;
+ }
+
+ if (get_sha1(snapshot, sha1) == 0)
+ return snapshot;
+
+ snapshot = fmt("v%s", snapshot);
+ if (get_sha1(snapshot, sha1) == 0)
+ return snapshot;
+
+ return NULL;
+}
+
+void show_error(char *msg)
+{
+ ctx.page.mimetype = "text/html";
+ cgit_print_http_headers(&ctx);
+ cgit_print_docstart(&ctx);
+ cgit_print_pageheader(&ctx);
+ cgit_print_error(msg);
+ cgit_print_docend();
+}
+
+void cgit_print_snapshot(const char *head, const char *hex,
+ const char *filename, int snapshots, int dwim)
{
- if (!strcmp(format, "zip"))
- cgit_print_zip(item, hex, prefix, filename);
- else
- cgit_print_error(fmt("Unsupported snapshot format: %s",
- format));
+ const struct cgit_snapshot_format* f;
+ char *prefix = NULL;
+
+ if (!filename) {
+ show_error("No snapshot name specified");
+ return;
+ }
+
+ f = get_format(filename);
+ if (!f) {
+ show_error(xstrdup(fmt("Unsupported snapshot format: %s",
+ filename)));
+ return;
+ }
+
+ if (!hex && dwim) {
+ hex = get_ref_from_filename(ctx.repo->url, filename, f);
+ if (hex == NULL) {
+ html_status(404, "Not found", 0);
+ return;
+ }
+ prefix = xstrdup(filename);
+ prefix[strlen(filename) - strlen(f->suffix)] = '\0';
+ }
+
+ if (!hex)
+ hex = head;
+
+ if (!prefix)
+ prefix = xstrdup(cgit_repobasename(ctx.repo->url));
+
+ make_snapshot(f, hex, prefix, filename);
+ free(prefix);
}
git.ckatri.com / cgit.git / blobdiff