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 #include "packfile.h"
  15
  16 static int print_ref_info(const char *refname, const struct object_id *oid,
  17                           int flags, void *cb_data)
  18 {
  19         struct object *obj;
  20
  21         if (!(obj = parse_object(oid)))
  22                 return 0;
  23
  24         htmlf("%s\t%s\n", oid_to_hex(oid), refname);
  25         if (obj->type == OBJ_TAG) {
  26                 if (!(obj = deref_tag(obj, refname, 0)))
  27                         return 0;
  28                 htmlf("%s\t%s^{}\n", oid_to_hex(&obj->oid), refname);
  29         }
  30         return 0;
  31 }
  32
  33 static void print_pack_info(void)
  34 {
  35         struct packed_git *pack;
  36         char *offset;
  37
  38         ctx.page.mimetype = "text/plain";
  39         ctx.page.filename = "objects/info/packs";
  40         cgit_print_http_headers();
  41         prepare_packed_git();
  42         for (pack = packed_git; pack; pack = pack->next) {
  43                 if (pack->pack_local) {
  44                         offset = strrchr(pack->pack_name, '/');
  45                         if (offset && offset[1] != '\0')
  46                                 ++offset;
  47                         else
  48                                 offset = pack->pack_name;
  49                         htmlf("P %s\n", offset);
  50                 }
  51         }
  52 }
  53
  54 static void send_file(const char *path)
  55 {
  56         struct stat st;
  57
  58         if (stat(path, &st)) {
  59                 switch (errno) {
  60                 case ENOENT:
  61                         cgit_print_error_page(404, "Not found", "Not found");
  62                         break;
  63                 case EACCES:
  64                         cgit_print_error_page(403, "Forbidden", "Forbidden");
  65                         break;
  66                 default:
  67                         cgit_print_error_page(400, "Bad request", "Bad request");
  68                 }
  69                 return;
  70         }
  71         ctx.page.mimetype = "application/octet-stream";
  72         ctx.page.filename = path;
  73         skip_prefix(path, ctx.repo->path, &ctx.page.filename);
  74         skip_prefix(ctx.page.filename, "/", &ctx.page.filename);
  75         cgit_print_http_headers();
  76         html_include(path);
  77 }
  78
  79 void cgit_clone_info(void)
  80 {
  81         if (!ctx.qry.path || strcmp(ctx.qry.path, "refs")) {
  82                 cgit_print_error_page(400, "Bad request", "Bad request");
  83                 return;
  84         }
  85
  86         ctx.page.mimetype = "text/plain";
  87         ctx.page.filename = "info/refs";
  88         cgit_print_http_headers();
  89         for_each_ref(print_ref_info, NULL);
  90 }
  91
  92 void cgit_clone_objects(void)
  93 {
  94         if (!ctx.qry.path) {
  95                 cgit_print_error_page(400, "Bad request", "Bad request");
  96                 return;
  97         }
  98
  99         if (!strcmp(ctx.qry.path, "info/packs")) {
 100                 print_pack_info();
 101                 return;
 102         }
 103
 104         send_file(git_path("objects/%s", ctx.qry.path));
 105 }
 106
 107 void cgit_clone_head(void)
 108 {
 109         send_file(git_path("%s", "HEAD"));
 110 }