ui-plain.c

   1 /* ui-plain.c: functions for output of plain blobs by path
   2  *
   3  * Copyright (C) 2008 Lars Hjemli
   4  *
   5  * Licensed under GNU General Public License v2
   6  *   (see COPYING for full license text)
   7  */
   8
   9 #include "cgit.h"
  10 #include "html.h"
  11 #include "ui-shared.h"
  12
  13 char *curr_rev;
  14 char *match_path;
  15 int match;
  16
  17 static void print_object(const unsigned char *sha1, const char *path)
  18 {
  19         enum object_type type;
  20         char *buf, *ext;
  21         unsigned long size;
  22         struct string_list_item *mime;
  23
  24         type = sha1_object_info(sha1, &size);
  25         if (type == OBJ_BAD) {
  26                 html_status(404, "Not found", 0);
  27                 return;
  28         }
  29
  30         buf = read_sha1_file(sha1, &type, &size);
  31         if (!buf) {
  32                 html_status(404, "Not found", 0);
  33                 return;
  34         }
  35         ctx.page.mimetype = NULL;
  36         ext = strrchr(path, '.');
  37         if (ext && *(++ext)) {
  38                 mime = string_list_lookup(ext, &ctx.cfg.mimetypes);
  39                 if (mime)
  40                         ctx.page.mimetype = (char *)mime->util;
  41         }
  42         if (!ctx.page.mimetype) {
  43                 if (buffer_is_binary(buf, size))
  44                         ctx.page.mimetype = "application/octet-stream";
  45                 else
  46                         ctx.page.mimetype = "text/plain";
  47         }
  48         ctx.page.filename = fmt("%s", path);
  49         ctx.page.size = size;
  50         ctx.page.etag = sha1_to_hex(sha1);
  51         cgit_print_http_headers(&ctx);
  52         html_raw(buf, size);
  53         match = 1;
  54 }
  55
  56 static int walk_tree(const unsigned char *sha1, const char *base, int baselen,
  57                      const char *pathname, unsigned mode, int stage,
  58                      void *cbdata)
  59 {
  60         if (S_ISDIR(mode))
  61                 return READ_TREE_RECURSIVE;
  62
  63         if (S_ISREG(mode) && !strncmp(base, match_path, baselen) &&
  64             !strcmp(pathname, match_path + baselen))
  65                 print_object(sha1, pathname);
  66
  67         return 0;
  68 }
  69
  70 void cgit_print_plain(struct cgit_context *ctx)
  71 {
  72         const char *rev = ctx->qry.sha1;
  73         unsigned char sha1[20];
  74         struct commit *commit;
  75         const char *paths[] = {ctx->qry.path, NULL};
  76
  77         if (!rev)
  78                 rev = ctx->qry.head;
  79
  80         curr_rev = xstrdup(rev);
  81         if (get_sha1(rev, sha1)) {
  82                 html_status(404, "Not found", 0);
  83                 return;
  84         }
  85         commit = lookup_commit_reference(sha1);
  86         if (!commit || parse_commit(commit)) {
  87                 html_status(404, "Not found", 0);
  88                 return;
  89         }
  90         match_path = ctx->qry.path;
  91         read_tree_recursive(commit->tree, "", 0, 0, paths, walk_tree, NULL);
  92         if (!match)
  93                 html_status(404, "Not found", 0);
  94 }