/* ui-snapshot.c: generate snapshot of a commit
*
* Copyright (C) 2006 Lars Hjemli
+ * Copyright (C) 2012 Jason A. Donenfeld <Jason@zx2c4.com>
*
* Licensed under GNU General Public License v2
* (see COPYING for full license text)
#include "html.h"
#include "ui-shared.h"
-static int write_compressed_tar_archive(struct archiver_args *args,const char *filter)
+static int write_archive_type(const char *format, const char *hex, const char *prefix)
{
- 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);
+ struct argv_array argv = ARGV_ARRAY_INIT;
+ argv_array_push(&argv, format);
+ if (prefix) {
+ argv_array_push(&argv, "--prefix");
+ argv_array_push(&argv, fmt("%s/", prefix));
}
- /* parent */
- chk_zero(close(rw[0]), "Closing read end of pipe");
- chk_non_negative(dup2(rw[1],STDOUT_FILENO), "Redirecting output to compressor");
+ argv_array_push(&argv, hex);
+ return write_archive(argv.argc, argv.argv, NULL, 1, NULL, 0);
+}
+
+static int write_tar_archive(const char *hex, const char *prefix)
+{
+ return write_archive_type("--format=tar", hex, prefix);
+}
- rv = write_tar_archive(args);
+static int write_zip_archive(const char *hex, const char *prefix)
+{
+ return write_archive_type("--format=zip", hex, prefix);
+}
- 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");
+static int write_compressed_tar_archive(const char *hex,
+ const char *prefix,
+ char *filter_argv[])
+{
+ int rv;
+ struct cgit_filter f;
+ f.cmd = filter_argv[0];
+ f.argv = filter_argv;
+ cgit_open_filter(&f);
+ rv = write_tar_archive(hex, prefix);
+ cgit_close_filter(&f);
return rv;
}
-static int write_tar_gzip_archive(struct archiver_args *args)
+static int write_tar_gzip_archive(const char *hex, const char *prefix)
{
- return write_compressed_tar_archive(args,"gzip");
+ char *argv[] = { "gzip", "-n", NULL };
+ return write_compressed_tar_archive(hex, prefix, argv);
}
-static int write_tar_bzip2_archive(struct archiver_args *args)
+static int write_tar_bzip2_archive(const char *hex, const char *prefix)
{
- return write_compressed_tar_archive(args,"bzip2");
+ char *argv[] = { "bzip2", 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);
}
const struct cgit_snapshot_format cgit_snapshot_formats[] = {
- { ".zip", "application/x-zip", write_zip_archive, 0x1 },
- { ".tar.gz", "application/x-tar", write_tar_gzip_archive, 0x2 },
- { ".tar.bz2", "application/x-tar", write_tar_bzip2_archive, 0x4 },
- { ".tar", "application/x-tar", write_tar_archive, 0x8 },
+ { ".zip", "application/x-zip", write_zip_archive, 0x01 },
+ { ".tar.gz", "application/x-gzip", write_tar_gzip_archive, 0x02 },
+ { ".tar.bz2", "application/x-bzip2", write_tar_bzip2_archive, 0x04 },
+ { ".tar", "application/x-tar", write_tar_archive, 0x08 },
+ { ".tar.xz", "application/x-xz", write_tar_xz_archive, 0x10 },
{}
};
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 1;
}
- commit = lookup_commit_reference(sha1);
- if(!commit) {
+ if (!lookup_commit_reference(sha1)) {
cgit_print_error(fmt("Not a commit reference: %s", hex));
return 1;
}
- memset(&args, 0, sizeof(args));
- if (prefix) {
- args.base = fmt("%s/", prefix);
- args.baselen = strlen(prefix) + 1;
- } else {
- args.base = "";
- args.baselen = 0;
- }
- args.tree = commit->tree;
- args.time = commit->date;
ctx.page.mimetype = xstrdup(format->mimetype);
ctx.page.filename = xstrdup(filename);
cgit_print_http_headers(&ctx);
- format->write_func(&args);
+ format->write_func(hex, prefix);
return 0;
}
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 == '_'))
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)
{
const struct cgit_snapshot_format* f;
char *prefix = NULL;
+ if (!filename) {
+ show_error("No snapshot name specified");
+ return;
+ }
+
f = get_format(filename);
if (!f) {
- ctx.page.mimetype = "text/html";
- cgit_print_http_headers(&ctx);
- cgit_print_docstart(&ctx);
- cgit_print_pageheader(&ctx);
- cgit_print_error(fmt("Unsupported snapshot format: %s", filename));
- cgit_print_docend();
+ 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) {
- prefix = xstrdup(filename);
- prefix[strlen(filename) - strlen(f->suffix)] = '\0';
+ if (hex == NULL) {
+ html_status(404, "Not found", 0);
+ return;
}
+ prefix = xstrdup(filename);
+ prefix[strlen(filename) - strlen(f->suffix)] = '\0';
}
if (!hex)
git.ckatri.com / cgit.git / blobdiff