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 int match_baselen;
  14 int match;
  15
  16 static void print_object(const unsigned char *sha1, const char *path)
  17 {
  18         enum object_type type;
  19         char *buf, *ext;
  20         unsigned long size;
  21         struct string_list_item *mime;
  22
  23         type = sha1_object_info(sha1, &size);
  24         if (type == OBJ_BAD) {
  25                 html_status(404, "Not found", 0);
  26                 return;
  27         }
  28
  29         buf = read_sha1_file(sha1, &type, &size);
  30         if (!buf) {
  31                 html_status(404, "Not found", 0);
  32                 return;
  33         }
  34         ctx.page.mimetype = NULL;
  35         ext = strrchr(path, '.');
  36         if (ext && *(++ext)) {
  37                 mime = string_list_lookup(ext, &ctx.cfg.mimetypes);
  38                 if (mime)
  39                         ctx.page.mimetype = (char *)mime->util;
  40         }
  41         if (!ctx.page.mimetype) {
  42                 if (buffer_is_binary(buf, size))
  43                         ctx.page.mimetype = "application/octet-stream";
  44                 else
  45                         ctx.page.mimetype = "text/plain";
  46         }
  47         ctx.page.filename = fmt("%s", path);
  48         ctx.page.size = size;
  49         ctx.page.etag = sha1_to_hex(sha1);
  50         cgit_print_http_headers(&ctx);
  51         html_raw(buf, size);
  52         match = 1;
  53 }
  54
  55 static int walk_tree(const unsigned char *sha1, const char *base, int baselen,
  56                      const char *pathname, unsigned mode, int stage,
  57                      void *cbdata)
  58 {
  59         if (baselen == match_baselen) {
  60                 if (S_ISREG(mode))
  61                         print_object(sha1, pathname);
  62         }
  63         else if (S_ISDIR(mode))
  64                 return READ_TREE_RECURSIVE;
  65
  66         return 0;
  67 }
  68
  69 static int basedir_len(const char *path)
  70 {
  71         char *p = strrchr(path, '/');
  72         if (p)
  73                 return p - path + 1;
  74         return 0;
  75 }
  76
  77 void cgit_print_plain(struct cgit_context *ctx)
  78 {
  79         const char *rev = ctx->qry.sha1;
  80         unsigned char sha1[20];
  81         struct commit *commit;
  82         const char *paths[] = {ctx->qry.path, NULL};
  83
  84         if (!rev)
  85                 rev = ctx->qry.head;
  86
  87         if (get_sha1(rev, sha1)) {
  88                 html_status(404, "Not found", 0);
  89                 return;
  90         }
  91         commit = lookup_commit_reference(sha1);
  92         if (!commit || parse_commit(commit)) {
  93                 html_status(404, "Not found", 0);
  94                 return;
  95         }
  96         match_baselen = basedir_len(paths[0]);
  97         read_tree_recursive(commit->tree, "", 0, 0, paths, walk_tree, NULL);
  98         if (!match)
  99                 html_status(404, "Not found", 0);
 100 }