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-rw-r--r--ui-snapshot.c150
1 files changed, 124 insertions, 26 deletions
diff --git a/ui-snapshot.c b/ui-snapshot.c
index 2257d6b..d6be55b 100644
--- a/ui-snapshot.c
+++ b/ui-snapshot.c
@@ -1,47 +1,145 @@
1/* ui-snapshot.c: generate snapshot of a commit 1/* ui-snapshot.c: generate snapshot of a commit
2 * 2 *
3 * Copyright (C) 2006 Lars Hjemli 3 * Copyright (C) 2006 Lars Hjemli
4 * 4 *
5 * Licensed under GNU General Public License v2 5 * Licensed under GNU General Public License v2
6 * (see COPYING for full license text) 6 * (see COPYING for full license text)
7 */ 7 */
8 8
9#include "cgit.h" 9#include "cgit.h"
10 10
11static void cgit_print_zip(struct cacheitem *item, const char *hex, 11static int write_compressed_tar_archive(struct archiver_args *args,const char *filter)
12 const char *prefix, const char *filename)
13{ 12{
14 struct archiver_args args; 13 int rw[2];
15 struct commit *commit; 14 pid_t gzpid;
16 unsigned char sha1[20]; 15 int stdout2;
16 int status;
17 int rv;
17 18
18 if (get_sha1(hex, sha1)) { 19 stdout2 = chk_non_negative(dup(STDIN_FILENO), "Preserving STDOUT before compressing");
19 cgit_print_error(fmt("Bad object id: %s", hex)); 20 chk_zero(pipe(rw), "Opening pipe from compressor subprocess");
20 return; 21 gzpid = chk_non_negative(fork(), "Forking compressor subprocess");
22 if(gzpid==0) {
23 /* child */
24 chk_zero(close(rw[1]), "Closing write end of pipe in child");
25 chk_zero(close(STDIN_FILENO), "Closing STDIN");
26 chk_non_negative(dup2(rw[0],STDIN_FILENO), "Redirecting compressor input to stdin");
27 execlp(filter,filter,NULL);
28 _exit(-1);
21 } 29 }
22 commit = lookup_commit_reference(sha1); 30 /* parent */
31 chk_zero(close(rw[0]), "Closing read end of pipe");
32 chk_non_negative(dup2(rw[1],STDOUT_FILENO), "Redirecting output to compressor");
33
34 rv = write_tar_archive(args);
23 35
24 if (!commit) { 36 chk_zero(close(STDOUT_FILENO), "Closing STDOUT redirected to compressor");
25 cgit_print_error(fmt("Not a commit reference: %s", hex)); 37 chk_non_negative(dup2(stdout2,STDOUT_FILENO), "Restoring uncompressed STDOUT");
26 return; 38 chk_zero(close(stdout2), "Closing uncompressed STDOUT");
27 } 39 chk_zero(close(rw[1]), "Closing write end of pipe in parent");
40 chk_positive(waitpid(gzpid,&status,0), "Waiting on compressor process");
41 if(! ( WIFEXITED(status) && WEXITSTATUS(status)==0 ) )
42 cgit_print_error("Failed to compress archive");
28 43
29 memset(&args, 0, sizeof(args)); 44 return rv;
30 args.base = fmt("%s/", prefix);
31 args.tree = commit->tree;
32
33 cgit_print_snapshot_start("application/x-zip", filename, item);
34 write_zip_archive(&args);
35} 45}
36 46
47static int write_tar_gzip_archive(struct archiver_args *args)
48{
49 return write_compressed_tar_archive(args,"gzip");
50}
51static int write_tar_bzip2_archive(struct archiver_args *args)
52{
53 return write_compressed_tar_archive(args,"bzip2");
54}
55
56static const struct snapshot_archive_t {
57 const char *suffix;
58 const char *mimetype;
59 write_archive_fn_t write_func;
60 int bit;
61 }snapshot_archives[] = {
62 { ".zip", "application/x-zip", write_zip_archive, 0x1 },
63 { ".tar.gz", "application/x-tar", write_tar_gzip_archive, 0x2 },
64 { ".tar.bz2", "application/x-tar", write_tar_bzip2_archive, 0x4 },
65 { ".tar", "application/x-tar", write_tar_archive, 0x8 }
66};
37 67
38void cgit_print_snapshot(struct cacheitem *item, const char *hex, 68void cgit_print_snapshot(struct cacheitem *item, const char *hex,
39 const char *format, const char *prefix, 69 const char *prefix, const char *filename,
40 const char *filename) 70 int snapshots)
71{
72 int fnl = strlen(filename);
73 int f;
74 for(f=0;f<(sizeof(snapshot_archives)/sizeof(*snapshot_archives));++f) {
75 const struct snapshot_archive_t* sat = &snapshot_archives[f];
76 int sl;
77 if(!(snapshots&sat->bit)) continue;
78 sl = strlen(sat->suffix);
79 if(fnl<sl || strcmp(&filename[fnl-sl],sat->suffix))
80 continue;
81
82 struct archiver_args args;
83 struct commit *commit;
84 unsigned char sha1[20];
85
86 if(get_sha1(hex, sha1)) {
87 cgit_print_error(fmt("Bad object id: %s", hex));
88 return;
89 }
90 commit = lookup_commit_reference(sha1);
91
92 if(!commit) {
93 cgit_print_error(fmt("Not a commit reference: %s", hex));
94 return;;
95 }
96
97 memset(&args,0,sizeof(args));
98 args.base = fmt("%s/", prefix);
99 args.tree = commit->tree;
100
101 cgit_print_snapshot_start(sat->mimetype, filename, item);
102 (*sat->write_func)(&args);
103 return;
104 }
105 cgit_print_error(fmt("Unsupported snapshot format: %s", filename));
106}
107
108void cgit_print_snapshot_links(const char *repo,const char *hex,int snapshots)
41{ 109{
42 if (!strcmp(format, "zip")) 110 char *filename;
43 cgit_print_zip(item, hex, prefix, filename); 111 int f;
44 else 112 for(f=0;f<(sizeof(snapshot_archives)/sizeof(*snapshot_archives));++f) {
45 cgit_print_error(fmt("Unsupported snapshot format: %s", 113 const struct snapshot_archive_t* sat = &snapshot_archives[f];
46 format)); 114 if(!(snapshots&sat->bit)) continue;
115 filename = fmt("%s-%s%s",cgit_repobasename(repo),hex,sat->suffix);
116 htmlf("<a href='%s'>%s</a><br/>",
117 cgit_fileurl(repo,"snapshot",filename,
118 fmt("id=%s&amp;name=%s",hex,filename)), filename);
119 }
120}
121
122int cgit_parse_snapshots_mask(const char *str)
123{
124 static const char *delim = " \t,:/|;";
125 int f, tl, rv = 0;
126 /* favor legacy setting */
127 if(atoi(str)) return 1;
128 for(;;) {
129 str += strspn(str,delim);
130 tl = strcspn(str,delim);
131 if(!tl)
132 break;
133 for(f=0;f<(sizeof(snapshot_archives)/sizeof(*snapshot_archives));++f) {
134 const struct snapshot_archive_t* sat = &snapshot_archives[f];
135 if(! ( strncmp(sat->suffix,str,tl) && strncmp(sat->suffix+1,str,tl-1) ) ) {
136 rv |= sat->bit;
137 break;
138 }
139 }
140 str += tl;
141 }
142 return rv;
47} 143}
144
145/* vim:set sw=8: */