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(&ctx.cfg.mimetypes, ext);
  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 char *buildpath(const char *base, int baselen, const char *path)
  56 {
  57         if (path[0])
  58                 return fmt("%.*s%s/", baselen, base, path);
  59         else
  60                 return fmt("%.*s/", baselen, base);
  61 }
  62
  63 static void print_dir(const unsigned char *sha1, const char *base,
  64                       int baselen, const char *path)
  65 {
  66         char *fullpath, *slash;
  67         size_t len;
  68
  69         fullpath = buildpath(base, baselen, path);
  70         slash = (fullpath[0] == '/' ? "" : "/");
  71         ctx.page.etag = sha1_to_hex(sha1);
  72         cgit_print_http_headers(&ctx);
  73         htmlf("<html><head><title>%s", slash);
  74         html_txt(fullpath);
  75         htmlf("</title></head>\n<body>\n<h2>%s", slash);
  76         html_txt(fullpath);
  77         html("</h2>\n<ul>\n");
  78         len = strlen(fullpath);
  79         if (len > 1) {
  80                 fullpath[len - 1] = 0;
  81                 slash = strrchr(fullpath, '/');
  82                 if (slash)
  83                         *(slash + 1) = 0;
  84                 else
  85                         fullpath = NULL;
  86                 html("<li>");
  87                 cgit_plain_link("../", NULL, NULL, ctx.qry.head, ctx.qry.sha1,
  88                                 fullpath);
  89                 html("</li>\n");
  90         }
  91         match = 2;
  92 }
  93
  94 static void print_dir_entry(const unsigned char *sha1, const char *base,
  95                             int baselen, const char *path, unsigned mode)
  96 {
  97         char *fullpath;
  98
  99         fullpath = buildpath(base, baselen, path);
 100         if (!S_ISDIR(mode))
 101                 fullpath[strlen(fullpath) - 1] = 0;
 102         html("  <li>");
 103         cgit_plain_link(path, NULL, NULL, ctx.qry.head, ctx.qry.sha1,
 104                         fullpath);
 105         html("</li>\n");
 106         match = 2;
 107 }
 108
 109 static void print_dir_tail(void)
 110 {
 111         html(" </ul>\n</body></html>\n");
 112 }
 113
 114 static int walk_tree(const unsigned char *sha1, const char *base, int baselen,
 115                      const char *pathname, unsigned mode, int stage,
 116                      void *cbdata)
 117 {
 118         if (baselen == match_baselen) {
 119                 if (S_ISREG(mode))
 120                         print_object(sha1, pathname);
 121                 else if (S_ISDIR(mode)) {
 122                         print_dir(sha1, base, baselen, pathname);
 123                         return READ_TREE_RECURSIVE;
 124                 }
 125         }
 126         else if (baselen > match_baselen)
 127                 print_dir_entry(sha1, base, baselen, pathname, mode);
 128         else if (S_ISDIR(mode))
 129                 return READ_TREE_RECURSIVE;
 130
 131         return 0;
 132 }
 133
 134 static int basedir_len(const char *path)
 135 {
 136         char *p = strrchr(path, '/');
 137         if (p)
 138                 return p - path + 1;
 139         return 0;
 140 }
 141
 142 void cgit_print_plain(struct cgit_context *ctx)
 143 {
 144         const char *rev = ctx->qry.sha1;
 145         unsigned char sha1[20];
 146         struct commit *commit;
 147         const char *paths[] = {ctx->qry.path, NULL};
 148
 149         if (!rev)
 150                 rev = ctx->qry.head;
 151
 152         if (get_sha1(rev, sha1)) {
 153                 html_status(404, "Not found", 0);
 154                 return;
 155         }
 156         commit = lookup_commit_reference(sha1);
 157         if (!commit || parse_commit(commit)) {
 158                 html_status(404, "Not found", 0);
 159                 return;
 160         }
 161         if (!paths[0]) {
 162                 paths[0] = "";
 163                 match_baselen = -1;
 164                 print_dir(commit->tree->object.sha1, "", 0, "");
 165         }
 166         else
 167                 match_baselen = basedir_len(paths[0]);
 168         read_tree_recursive(commit->tree, "", 0, 0, paths, walk_tree, NULL);
 169         if (!match)
 170                 html_status(404, "Not found", 0);
 171         else if (match == 2)
 172                 print_dir_tail();
 173 }