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) 2008 Lars Hjemli
   4  *
   5  * Licensed under GNU General Public License v2
   6  *   (see COPYING for full license text)
   7  */
   8
   9 #include <stdio.h>
  10 #include "cgit.h"
  11 #include "ui-plain.h"
  12 #include "html.h"
  13 #include "ui-shared.h"
  14
  15 struct walk_tree_context {
  16         int match_baselen;
  17         int match;
  18 };
  19
  20 static char *get_mimetype_from_file(const char *filename, const char *ext)
  21 {
  22         static const char *delimiters;
  23         char *result;
  24         FILE *fd;
  25         char line[1024];
  26         char *mimetype;
  27         char *token;
  28
  29         if (!filename)
  30                 return NULL;
  31
  32         fd = fopen(filename, "r");
  33         if (!fd)
  34                 return NULL;
  35
  36         delimiters = " \t\r\n";
  37         result = NULL;
  38
  39         /* loop over all lines in the file */
  40         while (!result && fgets(line, sizeof(line), fd)) {
  41                 mimetype = strtok(line, delimiters);
  42
  43                 /* skip empty lines and comment lines */
  44                 if (!mimetype || (mimetype[0] == '#'))
  45                         continue;
  46
  47                 /* loop over all extensions of mimetype */
  48                 while ((token = strtok(NULL, delimiters))) {
  49                         if (!strcasecmp(ext, token)) {
  50                                 result = xstrdup(mimetype);
  51                                 break;
  52                         }
  53                 }
  54         }
  55         fclose(fd);
  56
  57         return result;
  58 }
  59
  60 static int print_object(const unsigned char *sha1, const char *path)
  61 {
  62         enum object_type type;
  63         char *buf, *ext;
  64         unsigned long size;
  65         struct string_list_item *mime;
  66         int freemime;
  67
  68         type = sha1_object_info(sha1, &size);
  69         if (type == OBJ_BAD) {
  70                 html_status(404, "Not found", 0);
  71                 return 0;
  72         }
  73
  74         buf = read_sha1_file(sha1, &type, &size);
  75         if (!buf) {
  76                 html_status(404, "Not found", 0);
  77                 return 0;
  78         }
  79         ctx.page.mimetype = NULL;
  80         ext = strrchr(path, '.');
  81         freemime = 0;
  82         if (ext && *(++ext)) {
  83                 mime = string_list_lookup(&ctx.cfg.mimetypes, ext);
  84                 if (mime) {
  85                         ctx.page.mimetype = (char *)mime->util;
  86                 } else {
  87                         ctx.page.mimetype = get_mimetype_from_file(ctx.cfg.mimetype_file, ext);
  88                         if (ctx.page.mimetype)
  89                                 freemime = 1;
  90                 }
  91         }
  92         if (!ctx.page.mimetype) {
  93                 if (buffer_is_binary(buf, size))
  94                         ctx.page.mimetype = "application/octet-stream";
  95                 else
  96                         ctx.page.mimetype = "text/plain";
  97         }
  98         ctx.page.filename = fmt("%s", path);
  99         ctx.page.size = size;
 100         ctx.page.etag = sha1_to_hex(sha1);
 101         cgit_print_http_headers(&ctx);
 102         html_raw(buf, size);
 103         if (freemime)
 104                 free(ctx.page.mimetype);
 105         return 1;
 106 }
 107
 108 static char *buildpath(const char *base, int baselen, const char *path)
 109 {
 110         if (path[0])
 111                 return fmt("%.*s%s/", baselen, base, path);
 112         else
 113                 return fmt("%.*s/", baselen, base);
 114 }
 115
 116 static void print_dir(const unsigned char *sha1, const char *base,
 117                       int baselen, const char *path)
 118 {
 119         char *fullpath, *slash;
 120         size_t len;
 121
 122         fullpath = buildpath(base, baselen, path);
 123         slash = (fullpath[0] == '/' ? "" : "/");
 124         ctx.page.etag = sha1_to_hex(sha1);
 125         cgit_print_http_headers(&ctx);
 126         htmlf("<html><head><title>%s", slash);
 127         html_txt(fullpath);
 128         htmlf("</title></head>\n<body>\n<h2>%s", slash);
 129         html_txt(fullpath);
 130         html("</h2>\n<ul>\n");
 131         len = strlen(fullpath);
 132         if (len > 1) {
 133                 fullpath[len - 1] = 0;
 134                 slash = strrchr(fullpath, '/');
 135                 if (slash)
 136                         *(slash + 1) = 0;
 137                 else
 138                         fullpath = NULL;
 139                 html("<li>");
 140                 cgit_plain_link("../", NULL, NULL, ctx.qry.head, ctx.qry.sha1,
 141                                 fullpath);
 142                 html("</li>\n");
 143         }
 144 }
 145
 146 static void print_dir_entry(const unsigned char *sha1, const char *base,
 147                             int baselen, const char *path, unsigned mode)
 148 {
 149         char *fullpath;
 150
 151         fullpath = buildpath(base, baselen, path);
 152         if (!S_ISDIR(mode) && !S_ISGITLINK(mode))
 153                 fullpath[strlen(fullpath) - 1] = 0;
 154         html("  <li>");
 155         if (S_ISGITLINK(mode)) {
 156                 cgit_submodule_link(NULL, fullpath, sha1_to_hex(sha1));
 157         } else
 158                 cgit_plain_link(path, NULL, NULL, ctx.qry.head, ctx.qry.sha1,
 159                                 fullpath);
 160         html("</li>\n");
 161 }
 162
 163 static void print_dir_tail(void)
 164 {
 165         html(" </ul>\n</body></html>\n");
 166 }
 167
 168 static int walk_tree(const unsigned char *sha1, const char *base, int baselen,
 169                      const char *pathname, unsigned mode, int stage,
 170                      void *cbdata)
 171 {
 172         struct walk_tree_context *walk_tree_ctx = cbdata;
 173
 174         if (baselen == walk_tree_ctx->match_baselen) {
 175                 if (S_ISREG(mode)) {
 176                         if (print_object(sha1, pathname))
 177                                 walk_tree_ctx->match = 1;
 178                 } else if (S_ISDIR(mode)) {
 179                         print_dir(sha1, base, baselen, pathname);
 180                         walk_tree_ctx->match = 2;
 181                         return READ_TREE_RECURSIVE;
 182                 }
 183         } else if (baselen > walk_tree_ctx->match_baselen) {
 184                 print_dir_entry(sha1, base, baselen, pathname, mode);
 185                 walk_tree_ctx->match = 2;
 186         } else if (S_ISDIR(mode)) {
 187                 return READ_TREE_RECURSIVE;
 188         }
 189
 190         return 0;
 191 }
 192
 193 static int basedir_len(const char *path)
 194 {
 195         char *p = strrchr(path, '/');
 196         if (p)
 197                 return p - path + 1;
 198         return 0;
 199 }
 200
 201 void cgit_print_plain(struct cgit_context *ctx)
 202 {
 203         const char *rev = ctx->qry.sha1;
 204         unsigned char sha1[20];
 205         struct commit *commit;
 206         struct pathspec_item path_items = {
 207                 .match = ctx->qry.path,
 208                 .len = ctx->qry.path ? strlen(ctx->qry.path) : 0
 209         };
 210         struct pathspec paths = {
 211                 .nr = 1,
 212                 .items = &path_items
 213         };
 214         struct walk_tree_context walk_tree_ctx = {
 215                 .match = 0
 216         };
 217
 218         if (!rev)
 219                 rev = ctx->qry.head;
 220
 221         if (get_sha1(rev, sha1)) {
 222                 html_status(404, "Not found", 0);
 223                 return;
 224         }
 225         commit = lookup_commit_reference(sha1);
 226         if (!commit || parse_commit(commit)) {
 227                 html_status(404, "Not found", 0);
 228                 return;
 229         }
 230         if (!path_items.match) {
 231                 path_items.match = "";
 232                 walk_tree_ctx.match_baselen = -1;
 233                 print_dir(commit->tree->object.sha1, "", 0, "");
 234                 walk_tree_ctx.match = 2;
 235         }
 236         else
 237                 walk_tree_ctx.match_baselen = basedir_len(path_items.match);
 238         read_tree_recursive(commit->tree, "", 0, 0, &paths, walk_tree, &walk_tree_ctx);
 239         if (!walk_tree_ctx.match)
 240                 html_status(404, "Not found", 0);
 241         else if (walk_tree_ctx.match == 2)
 242                 print_dir_tail();
 243 }