a4d1ca1dc6
This is finally a proper headerfile for the shared ui-functions which used to reside in cgit.h Signed-off-by: Lars Hjemli <hjemli@gmail.com>
115 satır
3.3 KiB
C
115 satır
3.3 KiB
C
/* ui-snapshot.c: generate snapshot of a commit
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*
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* Copyright (C) 2006 Lars Hjemli
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*
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* Licensed under GNU General Public License v2
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* (see COPYING for full license text)
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*/
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#include "cgit.h"
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#include "html.h"
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#include "ui-shared.h"
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static int write_compressed_tar_archive(struct archiver_args *args,const char *filter)
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{
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int rw[2];
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pid_t gzpid;
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int stdout2;
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int status;
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int rv;
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stdout2 = chk_non_negative(dup(STDIN_FILENO), "Preserving STDOUT before compressing");
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chk_zero(pipe(rw), "Opening pipe from compressor subprocess");
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gzpid = chk_non_negative(fork(), "Forking compressor subprocess");
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if(gzpid==0) {
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/* child */
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chk_zero(close(rw[1]), "Closing write end of pipe in child");
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chk_zero(close(STDIN_FILENO), "Closing STDIN");
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chk_non_negative(dup2(rw[0],STDIN_FILENO), "Redirecting compressor input to stdin");
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execlp(filter,filter,NULL);
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_exit(-1);
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}
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/* parent */
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chk_zero(close(rw[0]), "Closing read end of pipe");
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chk_non_negative(dup2(rw[1],STDOUT_FILENO), "Redirecting output to compressor");
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rv = write_tar_archive(args);
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chk_zero(close(STDOUT_FILENO), "Closing STDOUT redirected to compressor");
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chk_non_negative(dup2(stdout2,STDOUT_FILENO), "Restoring uncompressed STDOUT");
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chk_zero(close(stdout2), "Closing uncompressed STDOUT");
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chk_zero(close(rw[1]), "Closing write end of pipe in parent");
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chk_positive(waitpid(gzpid,&status,0), "Waiting on compressor process");
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if(! ( WIFEXITED(status) && WEXITSTATUS(status)==0 ) )
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cgit_print_error("Failed to compress archive");
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return rv;
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}
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static int write_tar_gzip_archive(struct archiver_args *args)
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{
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return write_compressed_tar_archive(args,"gzip");
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}
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static int write_tar_bzip2_archive(struct archiver_args *args)
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{
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return write_compressed_tar_archive(args,"bzip2");
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}
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const struct cgit_snapshot_format cgit_snapshot_formats[] = {
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{ ".zip", "application/x-zip", write_zip_archive, 0x1 },
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{ ".tar.gz", "application/x-tar", write_tar_gzip_archive, 0x2 },
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{ ".tar.bz2", "application/x-tar", write_tar_bzip2_archive, 0x4 },
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{ ".tar", "application/x-tar", write_tar_archive, 0x8 },
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{}
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};
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static int make_snapshot(const struct cgit_snapshot_format *format,
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const char *hex, const char *prefix,
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const char *filename)
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{
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struct archiver_args args;
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struct commit *commit;
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unsigned char sha1[20];
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if(get_sha1(hex, sha1)) {
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cgit_print_error(fmt("Bad object id: %s", hex));
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return 1;
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}
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commit = lookup_commit_reference(sha1);
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if(!commit) {
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cgit_print_error(fmt("Not a commit reference: %s", hex));
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return 1;
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}
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memset(&args, 0, sizeof(args));
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args.base = fmt("%s/", prefix);
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args.tree = commit->tree;
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args.time = commit->date;
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ctx.page.mimetype = xstrdup(format->mimetype);
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ctx.page.filename = xstrdup(filename);
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cgit_print_http_headers(&ctx);
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format->write_func(&args);
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return 0;
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}
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void cgit_print_snapshot(const char *head, const char *hex, const char *prefix,
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const char *filename, int snapshots)
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{
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const struct cgit_snapshot_format* f;
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int sl, fnl;
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fnl = strlen(filename);
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if (!hex)
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hex = head;
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for (f = cgit_snapshot_formats; f->suffix; f++) {
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if (!(snapshots & f->bit))
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continue;
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sl = strlen(f->suffix);
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if(fnl < sl || strcmp(&filename[fnl-sl], f->suffix))
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continue;
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make_snapshot(f, hex, prefix, filename);
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return;
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}
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cgit_print_error(fmt("Unsupported snapshot format: %s", filename));
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}
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