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, *mimetype;
  23         unsigned long size;
  24
  25         type = sha1_object_info(sha1, &size);
  26         if (type == OBJ_BAD) {
  27                 cgit_print_error_page(404, "Not found", "Not found");
  28                 return 0;
  29         }
  30
  31         buf = read_sha1_file(sha1, &type, &size);
  32         if (!buf) {
  33                 cgit_print_error_page(404, "Not found", "Not found");
  34                 return 0;
  35         }
  36
  37         mimetype = get_mimetype_for_filename(path);
  38         ctx.page.mimetype = mimetype;
  39
  40         if (!ctx.page.mimetype) {
  41                 if (buffer_is_binary(buf, size)) {
  42                         ctx.page.mimetype = "application/octet-stream";
  43                         ctx.page.charset = NULL;
  44                 } else {
  45                         ctx.page.mimetype = "text/plain";
  46                 }
  47         }
  48         ctx.page.filename = path;
  49         ctx.page.size = size;
  50         ctx.page.etag = sha1_to_hex(sha1);
  51         cgit_print_http_headers();
  52         html_raw(buf, size);
  53         free(mimetype);
  54         free(buf);
  55         return 1;
  56 }
  57
  58 static char *buildpath(const char *base, int baselen, const char *path)
  59 {
  60         if (path[0])
  61                 return fmtalloc("%.*s%s/", baselen, base, path);
  62         else
  63                 return fmtalloc("%.*s/", baselen, base);
  64 }
  65
  66 static void print_dir(const unsigned char *sha1, const char *base,
  67                       int baselen, const char *path)
  68 {
  69         char *fullpath, *slash;
  70         size_t len;
  71
  72         fullpath = buildpath(base, baselen, path);
  73         slash = (fullpath[0] == '/' ? "" : "/");
  74         ctx.page.etag = sha1_to_hex(sha1);
  75         cgit_print_http_headers();
  76         htmlf("<html><head><title>%s", slash);
  77         html_txt(fullpath);
  78         htmlf("</title></head>\n<body>\n<h2>%s", slash);
  79         html_txt(fullpath);
  80         html("</h2>\n<ul>\n");
  81         len = strlen(fullpath);
  82         if (len > 1) {
  83                 fullpath[len - 1] = 0;
  84                 slash = strrchr(fullpath, '/');
  85                 if (slash)
  86                         *(slash + 1) = 0;
  87                 else
  88                         fullpath = NULL;
  89                 html("<li>");
  90                 cgit_plain_link("../", NULL, NULL, ctx.qry.head, ctx.qry.sha1,
  91                                 fullpath);
  92                 html("</li>\n");
  93         }
  94         free(fullpath);
  95 }
  96
  97 static void print_dir_entry(const unsigned char *sha1, const char *base,
  98                             int baselen, const char *path, unsigned mode)
  99 {
 100         char *fullpath;
 101
 102         fullpath = buildpath(base, baselen, path);
 103         if (!S_ISDIR(mode) && !S_ISGITLINK(mode))
 104                 fullpath[strlen(fullpath) - 1] = 0;
 105         html("  <li>");
 106         if (S_ISGITLINK(mode)) {
 107                 cgit_submodule_link(NULL, fullpath, sha1_to_hex(sha1));
 108         } else
 109                 cgit_plain_link(path, NULL, NULL, ctx.qry.head, ctx.qry.sha1,
 110                                 fullpath);
 111         html("</li>\n");
 112         free(fullpath);
 113 }
 114
 115 static void print_dir_tail(void)
 116 {
 117         html(" </ul>\n</body></html>\n");
 118 }
 119
 120 static int walk_tree(const unsigned char *sha1, struct strbuf *base,
 121                 const char *pathname, unsigned mode, int stage, void *cbdata)
 122 {
 123         struct walk_tree_context *walk_tree_ctx = cbdata;
 124
 125         if (base->len == walk_tree_ctx->match_baselen) {
 126                 if (S_ISREG(mode)) {
 127                         if (print_object(sha1, pathname))
 128                                 walk_tree_ctx->match = 1;
 129                 } else if (S_ISDIR(mode)) {
 130                         print_dir(sha1, base->buf, base->len, pathname);
 131                         walk_tree_ctx->match = 2;
 132                         return READ_TREE_RECURSIVE;
 133                 }
 134         } else if (base->len > walk_tree_ctx->match_baselen) {
 135                 print_dir_entry(sha1, base->buf, base->len, pathname, mode);
 136                 walk_tree_ctx->match = 2;
 137         } else if (S_ISDIR(mode)) {
 138                 return READ_TREE_RECURSIVE;
 139         }
 140
 141         return 0;
 142 }
 143
 144 static int basedir_len(const char *path)
 145 {
 146         char *p = strrchr(path, '/');
 147         if (p)
 148                 return p - path + 1;
 149         return 0;
 150 }
 151
 152 void cgit_print_plain(void)
 153 {
 154         const char *rev = ctx.qry.sha1;
 155         unsigned char sha1[20];
 156         struct commit *commit;
 157         struct pathspec_item path_items = {
 158                 .match = ctx.qry.path,
 159                 .len = ctx.qry.path ? strlen(ctx.qry.path) : 0
 160         };
 161         struct pathspec paths = {
 162                 .nr = 1,
 163                 .items = &path_items
 164         };
 165         struct walk_tree_context walk_tree_ctx = {
 166                 .match = 0
 167         };
 168
 169         if (!rev)
 170                 rev = ctx.qry.head;
 171
 172         if (get_sha1(rev, sha1)) {
 173                 cgit_print_error_page(404, "Not found", "Not found");
 174                 return;
 175         }
 176         commit = lookup_commit_reference(sha1);
 177         if (!commit || parse_commit(commit)) {
 178                 cgit_print_error_page(404, "Not found", "Not found");
 179                 return;
 180         }
 181         if (!path_items.match) {
 182                 path_items.match = "";
 183                 walk_tree_ctx.match_baselen = -1;
 184                 print_dir(commit->tree->object.sha1, "", 0, "");
 185                 walk_tree_ctx.match = 2;
 186         }
 187         else
 188                 walk_tree_ctx.match_baselen = basedir_len(path_items.match);
 189         read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
 190         if (!walk_tree_ctx.match)
 191                 cgit_print_error_page(404, "Not found", "Not found");
 192         else if (walk_tree_ctx.match == 2)
 193                 print_dir_tail();
 194 }