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) 2008 Lars Hjemli
   5  *
   6  * Licensed under GNU General Public License v2
   7  *   (see COPYING for full license text)
   8  */
   9
  10 #include "cgit.h"
  11 #include "html.h"
  12 #include "ui-shared.h"
  13
  14 static int print_ref_info(const char *refname, const unsigned char *sha1,
  15                           int flags, void *cb_data)
  16 {
  17         struct object *obj;
  18
  19         if (!(obj = parse_object(sha1)))
  20                 return 0;
  21
  22         if (!strcmp(refname, "HEAD") || !prefixcmp(refname, "refs/heads/"))
  23                 htmlf("%s\t%s\n", sha1_to_hex(sha1), refname);
  24         else if (!prefixcmp(refname, "refs/tags") && obj->type == OBJ_TAG) {
  25                 if (!(obj = deref_tag(obj, refname, 0)))
  26                         return 0;
  27                 htmlf("%s\t%s\n", sha1_to_hex(sha1), refname);
  28                 htmlf("%s\t%s^{}\n", sha1_to_hex(obj->sha1), refname);
  29         }
  30         return 0;
  31 }
  32
  33 static void print_pack_info(struct cgit_context *ctx)
  34 {
  35         struct packed_git *pack;
  36         int ofs;
  37
  38         ctx->page.mimetype = "text/plain";
  39         ctx->page.filename = "objects/info/packs";
  40         cgit_print_http_headers(ctx);
  41         ofs = strlen(ctx->repo->path) + strlen("/objects/pack/");
  42         prepare_packed_git();
  43         for (pack = packed_git; pack; pack = pack->next)
  44                 if (pack->pack_local)
  45                         htmlf("P %s\n", pack->pack_name + ofs);
  46 }
  47
  48 static void send_file(struct cgit_context *ctx, char *path)
  49 {
  50         struct stat st;
  51         int err;
  52
  53         if (stat(path, &st)) {
  54                 switch (errno) {
  55                 case ENOENT:
  56                         err = 404;
  57                         break;
  58                 case EACCES:
  59                         err = 403;
  60                         break;
  61                 default:
  62                         err = 400;
  63                 }
  64                 html_status(err, 0);
  65                 return;
  66         }
  67         ctx->page.mimetype = "application/octet-stream";
  68         ctx->page.filename = path;
  69         if (prefixcmp(ctx->repo->path, path))
  70                 ctx->page.filename += strlen(ctx->repo->path) + 1;
  71         cgit_print_http_headers(ctx);
  72         html_include(path);
  73 }
  74
  75 void cgit_clone_info(struct cgit_context *ctx)
  76 {
  77         if (!ctx->qry.path || strcmp(ctx->qry.path, "refs"))
  78                 return;
  79
  80         ctx->page.mimetype = "text/plain";
  81         ctx->page.filename = "info/refs";
  82         cgit_print_http_headers(ctx);
  83         for_each_ref(print_ref_info, ctx);
  84 }
  85
  86 void cgit_clone_objects(struct cgit_context *ctx)
  87 {
  88         if (!ctx->qry.path) {
  89                 html_status(400, 0);
  90                 return;
  91         }
  92
  93         if (!strcmp(ctx->qry.path, "info/packs")) {
  94                 print_pack_info(ctx);
  95                 return;
  96         }
  97
  98         send_file(ctx, git_path("objects/%s", ctx->qry.path));
  99 }
 100
 101 void cgit_clone_head(struct cgit_context *ctx)
 102 {
 103         send_file(ctx, git_path("%s", "HEAD"));
 104 }