ui-clone.c

   1 /* ui-clone.c: functions for http cloning, based on
   2  * git's http-backend.c by Shawn O. Pearce
   3  *
   4  * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
   5  *
   6  * Licensed under GNU General Public License v2
   7  *   (see COPYING for full license text)
   8  */
   9
  10 #include "cgit.h"
  11 #include "ui-clone.h"
  12 #include "html.h"
  13 #include "ui-shared.h"
  14
  15 static int print_ref_info(const char *refname, const struct object_id *oid,
  16                           int flags, void *cb_data)
  17 {
  18         struct object *obj;
  19
  20         if (!(obj = parse_object(oid->hash)))
  21                 return 0;
  22
  23         htmlf("%s\t%s\n", oid_to_hex(oid), refname);
  24         if (obj->type == OBJ_TAG) {
  25                 if (!(obj = deref_tag(obj, refname, 0)))
  26                         return 0;
  27                 htmlf("%s\t%s^{}\n", sha1_to_hex(obj->sha1), refname);
  28         }
  29         return 0;
  30 }
  31
  32 static void print_pack_info(void)
  33 {
  34         struct packed_git *pack;
  35         char *offset;
  36
  37         ctx.page.mimetype = "text/plain";
  38         ctx.page.filename = "objects/info/packs";
  39         cgit_print_http_headers();
  40         prepare_packed_git();
  41         for (pack = packed_git; pack; pack = pack->next) {
  42                 if (pack->pack_local) {
  43                         offset = strrchr(pack->pack_name, '/');
  44                         if (offset && offset[1] != '\0')
  45                                 ++offset;
  46                         else
  47                                 offset = pack->pack_name;
  48                         htmlf("P %s\n", offset);
  49                 }
  50         }
  51 }
  52
  53 static void send_file(const char *path)
  54 {
  55         struct stat st;
  56
  57         if (stat(path, &st)) {
  58                 switch (errno) {
  59                 case ENOENT:
  60                         html_status(404, "Not found", 0);
  61                         break;
  62                 case EACCES:
  63                         html_status(403, "Forbidden", 0);
  64                         break;
  65                 default:
  66                         html_status(400, "Bad request", 0);
  67                 }
  68                 return;
  69         }
  70         ctx.page.mimetype = "application/octet-stream";
  71         ctx.page.filename = path;
  72         skip_prefix(path, ctx.repo->path, &ctx.page.filename);
  73         skip_prefix(ctx.page.filename, "/", &ctx.page.filename);
  74         cgit_print_http_headers();
  75         html_include(path);
  76 }
  77
  78 void cgit_clone_info(void)
  79 {
  80         if (!ctx.qry.path || strcmp(ctx.qry.path, "refs")) {
  81                 html_status(400, "Bad request", 0);
  82                 return;
  83         }
  84
  85         ctx.page.mimetype = "text/plain";
  86         ctx.page.filename = "info/refs";
  87         cgit_print_http_headers();
  88         for_each_ref(print_ref_info, NULL);
  89 }
  90
  91 void cgit_clone_objects(void)
  92 {
  93         if (!ctx.qry.path) {
  94                 html_status(400, "Bad request", 0);
  95                 return;
  96         }
  97
  98         if (!strcmp(ctx.qry.path, "info/packs")) {
  99                 print_pack_info();
 100                 return;
 101         }
 102
 103         send_file(git_path("objects/%s", ctx.qry.path));
 104 }
 105
 106 void cgit_clone_head(void)
 107 {
 108         send_file(git_path("%s", "HEAD"));
 109 }