gitweb.ps.run Git - ps-cgit/blob - ui-plain.c

   1 /* ui-plain.c: functions for output of plain blobs by path
   2  *
   3  * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com>
   4  *
   5  * Licensed under GNU General Public License v2
   6  *   (see COPYING for full license text)
   7  */
   8
   9 #include "cgit.h"
  10 #include "ui-plain.h"
  11 #include "html.h"
  12 #include "ui-shared.h"
  13
  14 struct walk_tree_context {
  15         int match_baselen;
  16         int match;
  17 };
  18
  19 static int print_object(const unsigned char *sha1, const char *path)
  20 {
  21         enum object_type type;
  22         char *buf, *ext;
  23         unsigned long size;
  24         struct string_list_item *mime;
  25         int freemime;
  26
  27         type = sha1_object_info(sha1, &size);
  28         if (type == OBJ_BAD) {
  29                 cgit_print_error_page(404, "Not found", "Not found");
  30                 return 0;
  31         }
  32
  33         buf = read_sha1_file(sha1, &type, &size);
  34         if (!buf) {
  35                 cgit_print_error_page(404, "Not found", "Not found");
  36                 return 0;
  37         }
  38         ctx.page.mimetype = NULL;
  39         ext = strrchr(path, '.');
  40         freemime = 0;
  41         if (ext && *(++ext)) {
  42                 mime = string_list_lookup(&ctx.cfg.mimetypes, ext);
  43                 if (mime) {
  44                         ctx.page.mimetype = (char *)mime->util;
  45                         ctx.page.charset = NULL;
  46                 } else {
  47                         ctx.page.mimetype = get_mimetype_from_file(ctx.cfg.mimetype_file, ext);
  48                         if (ctx.page.mimetype) {
  49                                 freemime = 1;
  50                                 ctx.page.charset = NULL;
  51                         }
  52                 }
  53         }
  54         if (!ctx.page.mimetype) {
  55                 if (buffer_is_binary(buf, size)) {
  56                         ctx.page.mimetype = "application/octet-stream";
  57                         ctx.page.charset = NULL;
  58                 } else {
  59                         ctx.page.mimetype = "text/plain";
  60                 }
  61         }
  62         ctx.page.filename = path;
  63         ctx.page.size = size;
  64         ctx.page.etag = sha1_to_hex(sha1);
  65         cgit_print_http_headers();
  66         html_raw(buf, size);
  67         /* If we allocated this, then casting away const is safe. */
  68         if (freemime)
  69                 free((char*) ctx.page.mimetype);
  70         return 1;
  71 }
  72
  73 static char *buildpath(const char *base, int baselen, const char *path)
  74 {
  75         if (path[0])
  76                 return fmtalloc("%.*s%s/", baselen, base, path);
  77         else
  78                 return fmtalloc("%.*s/", baselen, base);
  79 }
  80
  81 static void print_dir(const unsigned char *sha1, const char *base,
  82                       int baselen, const char *path)
  83 {
  84         char *fullpath, *slash;
  85         size_t len;
  86
  87         fullpath = buildpath(base, baselen, path);
  88         slash = (fullpath[0] == '/' ? "" : "/");
  89         ctx.page.etag = sha1_to_hex(sha1);
  90         cgit_print_http_headers();
  91         htmlf("<html><head><title>%s", slash);
  92         html_txt(fullpath);
  93         htmlf("</title></head>\n<body>\n<h2>%s", slash);
  94         html_txt(fullpath);
  95         html("</h2>\n<ul>\n");
  96         len = strlen(fullpath);
  97         if (len > 1) {
  98                 fullpath[len - 1] = 0;
  99                 slash = strrchr(fullpath, '/');
 100                 if (slash)
 101                         *(slash + 1) = 0;
 102                 else
 103                         fullpath = NULL;
 104                 html("<li>");
 105                 cgit_plain_link("../", NULL, NULL, ctx.qry.head, ctx.qry.sha1,
 106                                 fullpath);
 107                 html("</li>\n");
 108         }
 109         free(fullpath);
 110 }
 111
 112 static void print_dir_entry(const unsigned char *sha1, const char *base,
 113                             int baselen, const char *path, unsigned mode)
 114 {
 115         char *fullpath;
 116
 117         fullpath = buildpath(base, baselen, path);
 118         if (!S_ISDIR(mode) && !S_ISGITLINK(mode))
 119                 fullpath[strlen(fullpath) - 1] = 0;
 120         html("  <li>");
 121         if (S_ISGITLINK(mode)) {
 122                 cgit_submodule_link(NULL, fullpath, sha1_to_hex(sha1));
 123         } else
 124                 cgit_plain_link(path, NULL, NULL, ctx.qry.head, ctx.qry.sha1,
 125                                 fullpath);
 126         html("</li>\n");
 127         free(fullpath);
 128 }
 129
 130 static void print_dir_tail(void)
 131 {
 132         html(" </ul>\n</body></html>\n");
 133 }
 134
 135 static int walk_tree(const unsigned char *sha1, struct strbuf *base,
 136                 const char *pathname, unsigned mode, int stage, void *cbdata)
 137 {
 138         struct walk_tree_context *walk_tree_ctx = cbdata;
 139
 140         if (base->len == walk_tree_ctx->match_baselen) {
 141                 if (S_ISREG(mode)) {
 142                         if (print_object(sha1, pathname))
 143                                 walk_tree_ctx->match = 1;
 144                 } else if (S_ISDIR(mode)) {
 145                         print_dir(sha1, base->buf, base->len, pathname);
 146                         walk_tree_ctx->match = 2;
 147                         return READ_TREE_RECURSIVE;
 148                 }
 149         } else if (base->len > walk_tree_ctx->match_baselen) {
 150                 print_dir_entry(sha1, base->buf, base->len, pathname, mode);
 151                 walk_tree_ctx->match = 2;
 152         } else if (S_ISDIR(mode)) {
 153                 return READ_TREE_RECURSIVE;
 154         }
 155
 156         return 0;
 157 }
 158
 159 static int basedir_len(const char *path)
 160 {
 161         char *p = strrchr(path, '/');
 162         if (p)
 163                 return p - path + 1;
 164         return 0;
 165 }
 166
 167 void cgit_print_plain(void)
 168 {
 169         const char *rev = ctx.qry.sha1;
 170         unsigned char sha1[20];
 171         struct commit *commit;
 172         struct pathspec_item path_items = {
 173                 .match = ctx.qry.path,
 174                 .len = ctx.qry.path ? strlen(ctx.qry.path) : 0
 175         };
 176         struct pathspec paths = {
 177                 .nr = 1,
 178                 .items = &path_items
 179         };
 180         struct walk_tree_context walk_tree_ctx = {
 181                 .match = 0
 182         };
 183
 184         if (!rev)
 185                 rev = ctx.qry.head;
 186
 187         if (get_sha1(rev, sha1)) {
 188                 cgit_print_error_page(404, "Not found", "Not found");
 189                 return;
 190         }
 191         commit = lookup_commit_reference(sha1);
 192         if (!commit || parse_commit(commit)) {
 193                 cgit_print_error_page(404, "Not found", "Not found");
 194                 return;
 195         }
 196         if (!path_items.match) {
 197                 path_items.match = "";
 198                 walk_tree_ctx.match_baselen = -1;
 199                 print_dir(commit->tree->object.sha1, "", 0, "");
 200                 walk_tree_ctx.match = 2;
 201         }
 202         else
 203                 walk_tree_ctx.match_baselen = basedir_len(path_items.match);
 204         read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
 205         if (!walk_tree_ctx.match)
 206                 cgit_print_error_page(404, "Not found", "Not found");
 207         else if (walk_tree_ctx.match == 2)
 208                 print_dir_tail();
 209 }