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 void print_dir(const unsigned char *sha1, const char *path,
  56                       const char *base)
  57 {
  58         char *fullpath;
  59         if (path[0] || base[0])
  60                 fullpath = fmt("/%s%s/", base, path);
  61         else
  62                 fullpath = "/";
  63         ctx.page.etag = sha1_to_hex(sha1);
  64         cgit_print_http_headers(&ctx);
  65         htmlf("<html><head><title>%s</title></head>\n<body>\n"
  66               " <h2>%s</h2>\n <ul>\n", fullpath, fullpath);
  67         if (path[0] || base[0])
  68               html("  <li><a href=\"../\">../</a></li>\n");
  69         match = 2;
  70 }
  71
  72 static void print_dir_entry(const unsigned char *sha1, const char *path,
  73                             unsigned mode)
  74 {
  75         const char *sep = "";
  76         if (S_ISDIR(mode))
  77                 sep = "/";
  78         htmlf("  <li><a href=\"%s%s\">%s%s</a></li>\n", path, sep, path, sep);
  79         match = 2;
  80 }
  81
  82 static void print_dir_tail(void)
  83 {
  84         html(" </ul>\n</body></html>\n");
  85 }
  86
  87 static int walk_tree(const unsigned char *sha1, const char *base, int baselen,
  88                      const char *pathname, unsigned mode, int stage,
  89                      void *cbdata)
  90 {
  91         if (baselen == match_baselen) {
  92                 if (S_ISREG(mode))
  93                         print_object(sha1, pathname);
  94                 else if (S_ISDIR(mode)) {
  95                         print_dir(sha1, pathname, base);
  96                         return READ_TREE_RECURSIVE;
  97                 }
  98         }
  99         else if (baselen > match_baselen)
 100                 print_dir_entry(sha1, pathname, mode);
 101         else if (S_ISDIR(mode))
 102                 return READ_TREE_RECURSIVE;
 103
 104         return 0;
 105 }
 106
 107 static int basedir_len(const char *path)
 108 {
 109         char *p = strrchr(path, '/');
 110         if (p)
 111                 return p - path + 1;
 112         return 0;
 113 }
 114
 115 void cgit_print_plain(struct cgit_context *ctx)
 116 {
 117         const char *rev = ctx->qry.sha1;
 118         unsigned char sha1[20];
 119         struct commit *commit;
 120         const char *paths[] = {ctx->qry.path, NULL};
 121
 122         if (!rev)
 123                 rev = ctx->qry.head;
 124
 125         if (get_sha1(rev, sha1)) {
 126                 html_status(404, "Not found", 0);
 127                 return;
 128         }
 129         commit = lookup_commit_reference(sha1);
 130         if (!commit || parse_commit(commit)) {
 131                 html_status(404, "Not found", 0);
 132                 return;
 133         }
 134         if (!paths[0]) {
 135                 paths[0] = "";
 136                 match_baselen = -1;
 137                 print_dir(commit->tree->object.sha1, "", "");
 138         }
 139         else
 140                 match_baselen = basedir_len(paths[0]);
 141         read_tree_recursive(commit->tree, "", 0, 0, paths, walk_tree, NULL);
 142         if (!match)
 143                 html_status(404, "Not found", 0);
 144         else if (match == 2)
 145                 print_dir_tail();
 146 }