ui-shared.c

   1 /* ui-shared.c: common web output functions
   2  *
   3  * Copyright (C) 2006 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 "cmd.h"
  11 #include "html.h"
  12
  13 const char cgit_doctype[] =
  14 "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n"
  15 "  \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n";
  16
  17 static char *http_date(time_t t)
  18 {
  19         static char day[][4] =
  20                 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
  21         static char month[][4] =
  22                 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
  23                  "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
  24         struct tm *tm = gmtime(&t);
  25         return fmt("%s, %02d %s %04d %02d:%02d:%02d GMT", day[tm->tm_wday],
  26                    tm->tm_mday, month[tm->tm_mon], 1900+tm->tm_year,
  27                    tm->tm_hour, tm->tm_min, tm->tm_sec);
  28 }
  29
  30 void cgit_print_error(const char *msg)
  31 {
  32         html("<div class='error'>");
  33         html_txt(msg);
  34         html("</div>\n");
  35 }
  36
  37 char *cgit_httpscheme()
  38 {
  39         if (ctx.env.https && !strcmp(ctx.env.https, "on"))
  40                 return "https://";
  41         else
  42                 return "http://";
  43 }
  44
  45 char *cgit_hosturl()
  46 {
  47         if (ctx.env.http_host)
  48                 return ctx.env.http_host;
  49         if (!ctx.env.server_name)
  50                 return NULL;
  51         if (!ctx.env.server_port || atoi(ctx.env.server_port) == 80)
  52                 return ctx.env.server_name;
  53         return xstrdup(fmt("%s:%s", ctx.env.server_name, ctx.env.server_port));
  54 }
  55
  56 char *cgit_rooturl()
  57 {
  58         if (ctx.cfg.virtual_root)
  59                 return fmt("%s/", ctx.cfg.virtual_root);
  60         else
  61                 return ctx.cfg.script_name;
  62 }
  63
  64 char *cgit_repourl(const char *reponame)
  65 {
  66         if (ctx.cfg.virtual_root) {
  67                 return fmt("%s/%s/", ctx.cfg.virtual_root, reponame);
  68         } else {
  69                 return fmt("?r=%s", reponame);
  70         }
  71 }
  72
  73 char *cgit_fileurl(const char *reponame, const char *pagename,
  74                    const char *filename, const char *query)
  75 {
  76         char *tmp;
  77         char *delim;
  78
  79         if (ctx.cfg.virtual_root) {
  80                 tmp = fmt("%s/%s/%s/%s", ctx.cfg.virtual_root, reponame,
  81                           pagename, (filename ? filename:""));
  82                 delim = "?";
  83         } else {
  84                 tmp = fmt("?url=%s/%s/%s", reponame, pagename,
  85                           (filename ? filename : ""));
  86                 delim = "&";
  87         }
  88         if (query)
  89                 tmp = fmt("%s%s%s", tmp, delim, query);
  90         return tmp;
  91 }
  92
  93 char *cgit_pageurl(const char *reponame, const char *pagename,
  94                    const char *query)
  95 {
  96         return cgit_fileurl(reponame,pagename,0,query);
  97 }
  98
  99 const char *cgit_repobasename(const char *reponame)
 100 {
 101         /* I assume we don't need to store more than one repo basename */
 102         static char rvbuf[1024];
 103         int p;
 104         const char *rv;
 105         strncpy(rvbuf,reponame,sizeof(rvbuf));
 106         if(rvbuf[sizeof(rvbuf)-1])
 107                 die("cgit_repobasename: truncated repository name '%s'", reponame);
 108         p = strlen(rvbuf)-1;
 109         /* strip trailing slashes */
 110         while(p && rvbuf[p]=='/') rvbuf[p--]=0;
 111         /* strip trailing .git */
 112         if(p>=3 && !strncmp(&rvbuf[p-3],".git",4)) {
 113                 p -= 3; rvbuf[p--] = 0;
 114         }
 115         /* strip more trailing slashes if any */
 116         while( p && rvbuf[p]=='/') rvbuf[p--]=0;
 117         /* find last slash in the remaining string */
 118         rv = strrchr(rvbuf,'/');
 119         if(rv)
 120                 return ++rv;
 121         return rvbuf;
 122 }
 123
 124 char *cgit_currurl()
 125 {
 126         if (!ctx.cfg.virtual_root)
 127                 return ctx.cfg.script_name;
 128         else if (ctx.qry.page)
 129                 return fmt("%s/%s/%s/", ctx.cfg.virtual_root, ctx.qry.repo, ctx.qry.page);
 130         else if (ctx.qry.repo)
 131                 return fmt("%s/%s/", ctx.cfg.virtual_root, ctx.qry.repo);
 132         else
 133                 return fmt("%s/", ctx.cfg.virtual_root);
 134 }
 135
 136 static void site_url(const char *page, const char *search, int ofs)
 137 {
 138         char *delim = "?";
 139
 140         if (ctx.cfg.virtual_root) {
 141                 html_attr(ctx.cfg.virtual_root);
 142                 if (ctx.cfg.virtual_root[strlen(ctx.cfg.virtual_root) - 1] != '/')
 143                         html("/");
 144         } else
 145                 html(ctx.cfg.script_name);
 146
 147         if (page) {
 148                 htmlf("?p=%s", page);
 149                 delim = "&";
 150         }
 151         if (search) {
 152                 html(delim);
 153                 html("q=");
 154                 html_attr(search);
 155                 delim = "&";
 156         }
 157         if (ofs) {
 158                 html(delim);
 159                 htmlf("ofs=%d", ofs);
 160         }
 161 }
 162
 163 static void site_link(const char *page, const char *name, const char *title,
 164                       const char *class, const char *search, int ofs)
 165 {
 166         html("<a");
 167         if (title) {
 168                 html(" title='");
 169                 html_attr(title);
 170                 html("'");
 171         }
 172         if (class) {
 173                 html(" class='");
 174                 html_attr(class);
 175                 html("'");
 176         }
 177         html(" href='");
 178         site_url(page, search, ofs);
 179         html("'>");
 180         html_txt(name);
 181         html("</a>");
 182 }
 183
 184 void cgit_index_link(const char *name, const char *title, const char *class,
 185                      const char *pattern, int ofs)
 186 {
 187         site_link(NULL, name, title, class, pattern, ofs);
 188 }
 189
 190 static char *repolink(const char *title, const char *class, const char *page,
 191                       const char *head, const char *path)
 192 {
 193         char *delim = "?";
 194
 195         html("<a");
 196         if (title) {
 197                 html(" title='");
 198                 html_attr(title);
 199                 html("'");
 200         }
 201         if (class) {
 202                 html(" class='");
 203                 html_attr(class);
 204                 html("'");
 205         }
 206         html(" href='");
 207         if (ctx.cfg.virtual_root) {
 208                 html_url_path(ctx.cfg.virtual_root);
 209                 if (ctx.cfg.virtual_root[strlen(ctx.cfg.virtual_root) - 1] != '/')
 210                         html("/");
 211                 html_url_path(ctx.repo->url);
 212                 if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
 213                         html("/");
 214                 if (page) {
 215                         html_url_path(page);
 216                         html("/");
 217                         if (path)
 218                                 html_url_path(path);
 219                 }
 220         } else {
 221                 html(ctx.cfg.script_name);
 222                 html("?url=");
 223                 html_url_arg(ctx.repo->url);
 224                 if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
 225                         html("/");
 226                 if (page) {
 227                         html_url_arg(page);
 228                         html("/");
 229                         if (path)
 230                                 html_url_arg(path);
 231                 }
 232                 delim = "&amp;";
 233         }
 234         if (head && strcmp(head, ctx.repo->defbranch)) {
 235                 html(delim);
 236                 html("h=");
 237                 html_url_arg(head);
 238                 delim = "&amp;";
 239         }
 240         return fmt("%s", delim);
 241 }
 242
 243 static void reporevlink(const char *page, const char *name, const char *title,
 244                         const char *class, const char *head, const char *rev,
 245                         const char *path)
 246 {
 247         char *delim;
 248
 249         delim = repolink(title, class, page, head, path);
 250         if (rev && ctx.qry.head != NULL && strcmp(rev, ctx.qry.head)) {
 251                 html(delim);
 252                 html("id=");
 253                 html_url_arg(rev);
 254         }
 255         html("'>");
 256         html_txt(name);
 257         html("</a>");
 258 }
 259
 260 void cgit_summary_link(const char *name, const char *title, const char *class,
 261                        const char *head)
 262 {
 263         reporevlink(NULL, name, title, class, head, NULL, NULL);
 264 }
 265
 266 void cgit_tag_link(const char *name, const char *title, const char *class,
 267                    const char *head, const char *rev)
 268 {
 269         reporevlink("tag", name, title, class, head, rev, NULL);
 270 }
 271
 272 void cgit_tree_link(const char *name, const char *title, const char *class,
 273                     const char *head, const char *rev, const char *path)
 274 {
 275         reporevlink("tree", name, title, class, head, rev, path);
 276 }
 277
 278 void cgit_plain_link(const char *name, const char *title, const char *class,
 279                      const char *head, const char *rev, const char *path)
 280 {
 281         reporevlink("plain", name, title, class, head, rev, path);
 282 }
 283
 284 void cgit_log_link(const char *name, const char *title, const char *class,
 285                    const char *head, const char *rev, const char *path,
 286                    int ofs, const char *grep, const char *pattern, int showmsg)
 287 {
 288         char *delim;
 289
 290         delim = repolink(title, class, "log", head, path);
 291         if (rev && strcmp(rev, ctx.qry.head)) {
 292                 html(delim);
 293                 html("id=");
 294                 html_url_arg(rev);
 295                 delim = "&";
 296         }
 297         if (grep && pattern) {
 298                 html(delim);
 299                 html("qt=");
 300                 html_url_arg(grep);
 301                 delim = "&";
 302                 html(delim);
 303                 html("q=");
 304                 html_url_arg(pattern);
 305         }
 306         if (ofs > 0) {
 307                 html(delim);
 308                 html("ofs=");
 309                 htmlf("%d", ofs);
 310                 delim = "&";
 311         }
 312         if (showmsg) {
 313                 html(delim);
 314                 html("showmsg=1");
 315         }
 316         html("'>");
 317         html_txt(name);
 318         html("</a>");
 319 }
 320
 321 void cgit_commit_link(char *name, const char *title, const char *class,
 322                       const char *head, const char *rev, int toggle_ssdiff)
 323 {
 324         if (strlen(name) > ctx.cfg.max_msg_len && ctx.cfg.max_msg_len >= 15) {
 325                 name[ctx.cfg.max_msg_len] = '\0';
 326                 name[ctx.cfg.max_msg_len - 1] = '.';
 327                 name[ctx.cfg.max_msg_len - 2] = '.';
 328                 name[ctx.cfg.max_msg_len - 3] = '.';
 329         }
 330
 331         char *delim;
 332
 333         delim = repolink(title, class, "commit", head, NULL);
 334         if (rev && strcmp(rev, ctx.qry.head)) {
 335                 html(delim);
 336                 html("id=");
 337                 html_url_arg(rev);
 338                 delim = "&amp;";
 339         }
 340         if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
 341                 html(delim);
 342                 html("ss=1");
 343         }
 344         html("'>");
 345         html_txt(name);
 346         html("</a>");
 347 }
 348
 349 void cgit_refs_link(const char *name, const char *title, const char *class,
 350                     const char *head, const char *rev, const char *path)
 351 {
 352         reporevlink("refs", name, title, class, head, rev, path);
 353 }
 354
 355 void cgit_snapshot_link(const char *name, const char *title, const char *class,
 356                         const char *head, const char *rev,
 357                         const char *archivename)
 358 {
 359         reporevlink("snapshot", name, title, class, head, rev, archivename);
 360 }
 361
 362 void cgit_diff_link(const char *name, const char *title, const char *class,
 363                     const char *head, const char *new_rev, const char *old_rev,
 364                     const char *path, int toggle_ssdiff)
 365 {
 366         char *delim;
 367
 368         delim = repolink(title, class, "diff", head, path);
 369         if (new_rev && ctx.qry.head != NULL && strcmp(new_rev, ctx.qry.head)) {
 370                 html(delim);
 371                 html("id=");
 372                 html_url_arg(new_rev);
 373                 delim = "&amp;";
 374         }
 375         if (old_rev) {
 376                 html(delim);
 377                 html("id2=");
 378                 html_url_arg(old_rev);
 379                 delim = "&amp;";
 380         }
 381         if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
 382                 html(delim);
 383                 html("ss=1");
 384         }
 385         html("'>");
 386         html_txt(name);
 387         html("</a>");
 388 }
 389
 390 void cgit_patch_link(const char *name, const char *title, const char *class,
 391                      const char *head, const char *rev, const char *path)
 392 {
 393         reporevlink("patch", name, title, class, head, rev, path);
 394 }
 395
 396 void cgit_stats_link(const char *name, const char *title, const char *class,
 397                      const char *head, const char *path)
 398 {
 399         reporevlink("stats", name, title, class, head, NULL, path);
 400 }
 401
 402 void cgit_self_link(char *name, const char *title, const char *class,
 403                     struct cgit_context *ctx)
 404 {
 405         if (!strcmp(ctx->qry.page, "repolist"))
 406                 return cgit_index_link(name, title, class, ctx->qry.search,
 407                                        ctx->qry.ofs);
 408         else if (!strcmp(ctx->qry.page, "summary"))
 409                 return cgit_summary_link(name, title, class, ctx->qry.head);
 410         else if (!strcmp(ctx->qry.page, "tag"))
 411                 return cgit_tag_link(name, title, class, ctx->qry.head,
 412                                      ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL);
 413         else if (!strcmp(ctx->qry.page, "tree"))
 414                 return cgit_tree_link(name, title, class, ctx->qry.head,
 415                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 416                                       ctx->qry.path);
 417         else if (!strcmp(ctx->qry.page, "plain"))
 418                 return cgit_plain_link(name, title, class, ctx->qry.head,
 419                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 420                                       ctx->qry.path);
 421         else if (!strcmp(ctx->qry.page, "log"))
 422                 return cgit_log_link(name, title, class, ctx->qry.head,
 423                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 424                                       ctx->qry.path, ctx->qry.ofs,
 425                                       ctx->qry.grep, ctx->qry.search,
 426                                       ctx->qry.showmsg);
 427         else if (!strcmp(ctx->qry.page, "commit"))
 428                 return cgit_commit_link(name, title, class, ctx->qry.head,
 429                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 430                                       ctx->qry.path, 0);
 431         else if (!strcmp(ctx->qry.page, "patch"))
 432                 return cgit_patch_link(name, title, class, ctx->qry.head,
 433                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 434                                       ctx->qry.path);
 435         else if (!strcmp(ctx->qry.page, "refs"))
 436                 return cgit_refs_link(name, title, class, ctx->qry.head,
 437                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 438                                       ctx->qry.path);
 439         else if (!strcmp(ctx->qry.page, "snapshot"))
 440                 return cgit_snapshot_link(name, title, class, ctx->qry.head,
 441                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 442                                       ctx->qry.path);
 443         else if (!strcmp(ctx->qry.page, "diff"))
 444                 return cgit_diff_link(name, title, class, ctx->qry.head,
 445                                       ctx->qry.sha1, ctx->qry.sha2,
 446                                       ctx->qry.path, 0);
 447         else if (!strcmp(ctx->qry.page, "stats"))
 448                 return cgit_stats_link(name, title, class, ctx->qry.head,
 449                                       ctx->qry.path);
 450
 451         /* Don't known how to make link for this page */
 452         repolink(title, class, ctx->qry.page, ctx->qry.head, ctx->qry.path);
 453         html("><!-- cgit_self_link() doesn't know how to make link for page '");
 454         html_txt(ctx->qry.page);
 455         html("' -->");
 456         html_txt(name);
 457         html("</a>");
 458 }
 459
 460 void cgit_object_link(struct object *obj)
 461 {
 462         char *page, *shortrev, *fullrev, *name;
 463
 464         fullrev = sha1_to_hex(obj->sha1);
 465         shortrev = xstrdup(fullrev);
 466         shortrev[10] = '\0';
 467         if (obj->type == OBJ_COMMIT) {
 468                 cgit_commit_link(fmt("commit %s...", shortrev), NULL, NULL,
 469                                  ctx.qry.head, fullrev, 0);
 470                 return;
 471         } else if (obj->type == OBJ_TREE)
 472                 page = "tree";
 473         else if (obj->type == OBJ_TAG)
 474                 page = "tag";
 475         else
 476                 page = "blob";
 477         name = fmt("%s %s...", typename(obj->type), shortrev);
 478         reporevlink(page, name, NULL, NULL, ctx.qry.head, fullrev, NULL);
 479 }
 480
 481 void cgit_print_date(time_t secs, const char *format, int local_time)
 482 {
 483         char buf[64];
 484         struct tm *time;
 485
 486         if (!secs)
 487                 return;
 488         if(local_time)
 489                 time = localtime(&secs);
 490         else
 491                 time = gmtime(&secs);
 492         strftime(buf, sizeof(buf)-1, format, time);
 493         html_txt(buf);
 494 }
 495
 496 void cgit_print_age(time_t t, time_t max_relative, const char *format)
 497 {
 498         time_t now, secs;
 499
 500         if (!t)
 501                 return;
 502         time(&now);
 503         secs = now - t;
 504
 505         if (secs > max_relative && max_relative >= 0) {
 506                 cgit_print_date(t, format, ctx.cfg.local_time);
 507                 return;
 508         }
 509
 510         if (secs < TM_HOUR * 2) {
 511                 htmlf("<span class='age-mins'>%.0f min.</span>",
 512                       secs * 1.0 / TM_MIN);
 513                 return;
 514         }
 515         if (secs < TM_DAY * 2) {
 516                 htmlf("<span class='age-hours'>%.0f hours</span>",
 517                       secs * 1.0 / TM_HOUR);
 518                 return;
 519         }
 520         if (secs < TM_WEEK * 2) {
 521                 htmlf("<span class='age-days'>%.0f days</span>",
 522                       secs * 1.0 / TM_DAY);
 523                 return;
 524         }
 525         if (secs < TM_MONTH * 2) {
 526                 htmlf("<span class='age-weeks'>%.0f weeks</span>",
 527                       secs * 1.0 / TM_WEEK);
 528                 return;
 529         }
 530         if (secs < TM_YEAR * 2) {
 531                 htmlf("<span class='age-months'>%.0f months</span>",
 532                       secs * 1.0 / TM_MONTH);
 533                 return;
 534         }
 535         htmlf("<span class='age-years'>%.0f years</span>",
 536               secs * 1.0 / TM_YEAR);
 537 }
 538
 539 void cgit_print_http_headers(struct cgit_context *ctx)
 540 {
 541         if (ctx->env.no_http && !strcmp(ctx->env.no_http, "1"))
 542                 return;
 543
 544         if (ctx->page.status)
 545                 htmlf("Status: %d %s\n", ctx->page.status, ctx->page.statusmsg);
 546         if (ctx->page.mimetype && ctx->page.charset)
 547                 htmlf("Content-Type: %s; charset=%s\n", ctx->page.mimetype,
 548                       ctx->page.charset);
 549         else if (ctx->page.mimetype)
 550                 htmlf("Content-Type: %s\n", ctx->page.mimetype);
 551         if (ctx->page.size)
 552                 htmlf("Content-Length: %ld\n", ctx->page.size);
 553         if (ctx->page.filename)
 554                 htmlf("Content-Disposition: inline; filename=\"%s\"\n",
 555                       ctx->page.filename);
 556         htmlf("Last-Modified: %s\n", http_date(ctx->page.modified));
 557         htmlf("Expires: %s\n", http_date(ctx->page.expires));
 558         if (ctx->page.etag)
 559                 htmlf("ETag: \"%s\"\n", ctx->page.etag);
 560         html("\n");
 561         if (ctx->env.request_method && !strcmp(ctx->env.request_method, "HEAD"))
 562                 exit(0);
 563 }
 564
 565 void cgit_print_docstart(struct cgit_context *ctx)
 566 {
 567         if (ctx->cfg.embedded) {
 568                 if (ctx->cfg.header)
 569                         html_include(ctx->cfg.header);
 570                 return;
 571         }
 572
 573         char *host = cgit_hosturl();
 574         html(cgit_doctype);
 575         html("<html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en' lang='en'>\n");
 576         html("<head>\n");
 577         html("<title>");
 578         html_txt(ctx->page.title);
 579         html("</title>\n");
 580         htmlf("<meta name='generator' content='cgit %s'/>\n", cgit_version);
 581         if (ctx->cfg.robots && *ctx->cfg.robots)
 582                 htmlf("<meta name='robots' content='%s'/>\n", ctx->cfg.robots);
 583         html("<link rel='stylesheet' type='text/css' href='");
 584         html_attr(ctx->cfg.css);
 585         html("'/>\n");
 586         if (ctx->cfg.favicon) {
 587                 html("<link rel='shortcut icon' href='");
 588                 html_attr(ctx->cfg.favicon);
 589                 html("'/>\n");
 590         }
 591         if (host && ctx->repo) {
 592                 html("<link rel='alternate' title='Atom feed' href='");
 593                 html(cgit_httpscheme());
 594                 html_attr(cgit_hosturl());
 595                 html_attr(cgit_fileurl(ctx->repo->url, "atom", ctx->qry.vpath,
 596                                        fmt("h=%s", ctx->qry.head)));
 597                 html("' type='application/atom+xml'/>\n");
 598         }
 599         if (ctx->cfg.head_include)
 600                 html_include(ctx->cfg.head_include);
 601         html("</head>\n");
 602         html("<body>\n");
 603         if (ctx->cfg.header)
 604                 html_include(ctx->cfg.header);
 605 }
 606
 607 void cgit_print_docend()
 608 {
 609         html("</div> <!-- class=content -->\n");
 610         if (ctx.cfg.embedded) {
 611                 html("</div> <!-- id=cgit -->\n");
 612                 if (ctx.cfg.footer)
 613                         html_include(ctx.cfg.footer);
 614                 return;
 615         }
 616         if (ctx.cfg.footer)
 617                 html_include(ctx.cfg.footer);
 618         else {
 619                 htmlf("<div class='footer'>generated  by cgit %s at ",
 620                         cgit_version);
 621                 cgit_print_date(time(NULL), FMT_LONGDATE, ctx.cfg.local_time);
 622                 html("</div>\n");
 623         }
 624         html("</div> <!-- id=cgit -->\n");
 625         html("</body>\n</html>\n");
 626 }
 627
 628 int print_branch_option(const char *refname, const unsigned char *sha1,
 629                         int flags, void *cb_data)
 630 {
 631         char *name = (char *)refname;
 632         html_option(name, name, ctx.qry.head);
 633         return 0;
 634 }
 635
 636 int print_archive_ref(const char *refname, const unsigned char *sha1,
 637                        int flags, void *cb_data)
 638 {
 639         struct tag *tag;
 640         struct taginfo *info;
 641         struct object *obj;
 642         char buf[256], *url;
 643         unsigned char fileid[20];
 644         int *header = (int *)cb_data;
 645
 646         if (prefixcmp(refname, "refs/archives"))
 647                 return 0;
 648         strncpy(buf, refname+14, sizeof(buf));
 649         obj = parse_object(sha1);
 650         if (!obj)
 651                 return 1;
 652         if (obj->type == OBJ_TAG) {
 653                 tag = lookup_tag(sha1);
 654                 if (!tag || parse_tag(tag) || !(info = cgit_parse_tag(tag)))
 655                         return 0;
 656                 hashcpy(fileid, tag->tagged->sha1);
 657         } else if (obj->type != OBJ_BLOB) {
 658                 return 0;
 659         } else {
 660                 hashcpy(fileid, sha1);
 661         }
 662         if (!*header) {
 663                 html("<h1>download</h1>\n");
 664                 *header = 1;
 665         }
 666         url = cgit_pageurl(ctx.qry.repo, "blob",
 667                            fmt("id=%s&amp;path=%s", sha1_to_hex(fileid),
 668                                buf));
 669         html_link_open(url, NULL, "menu");
 670         html_txt(strlpart(buf, 20));
 671         html_link_close();
 672         return 0;
 673 }
 674
 675 void cgit_add_hidden_formfields(int incl_head, int incl_search,
 676                                 const char *page)
 677 {
 678         char *url;
 679
 680         if (!ctx.cfg.virtual_root) {
 681                 url = fmt("%s/%s", ctx.qry.repo, page);
 682                 if (ctx.qry.vpath)
 683                         url = fmt("%s/%s", url, ctx.qry.vpath);
 684                 html_hidden("url", url);
 685         }
 686
 687         if (incl_head && ctx.qry.head && ctx.repo->defbranch &&
 688             strcmp(ctx.qry.head, ctx.repo->defbranch))
 689                 html_hidden("h", ctx.qry.head);
 690
 691         if (ctx.qry.sha1)
 692                 html_hidden("id", ctx.qry.sha1);
 693         if (ctx.qry.sha2)
 694                 html_hidden("id2", ctx.qry.sha2);
 695         if (ctx.qry.showmsg)
 696                 html_hidden("showmsg", "1");
 697
 698         if (incl_search) {
 699                 if (ctx.qry.grep)
 700                         html_hidden("qt", ctx.qry.grep);
 701                 if (ctx.qry.search)
 702                         html_hidden("q", ctx.qry.search);
 703         }
 704 }
 705
 706 static const char *hc(struct cgit_context *ctx, const char *page)
 707 {
 708         return strcmp(ctx->qry.page, page) ? NULL : "active";
 709 }
 710
 711 static void cgit_print_path_crumbs(struct cgit_context *ctx, char *path)
 712 {
 713         char *old_path = ctx->qry.path;
 714         char *p = path, *q, *end = path + strlen(path);
 715
 716         ctx->qry.path = NULL;
 717         cgit_self_link("root", NULL, NULL, ctx);
 718         ctx->qry.path = p = path;
 719         while (p < end) {
 720                 if (!(q = strchr(p, '/')))
 721                         q = end;
 722                 *q = '\0';
 723                 html_txt("/");
 724                 cgit_self_link(p, NULL, NULL, ctx);
 725                 if (q < end)
 726                         *q = '/';
 727                 p = q + 1;
 728         }
 729         ctx->qry.path = old_path;
 730 }
 731
 732 static void print_header(struct cgit_context *ctx)
 733 {
 734         html("<table id='header'>\n");
 735         html("<tr>\n");
 736
 737         if (ctx->cfg.logo && ctx->cfg.logo[0] != 0) {
 738                 html("<td class='logo' rowspan='2'><a href='");
 739                 if (ctx->cfg.logo_link)
 740                         html_attr(ctx->cfg.logo_link);
 741                 else
 742                         html_attr(cgit_rooturl());
 743                 html("'><img src='");
 744                 html_attr(ctx->cfg.logo);
 745                 html("' alt='cgit logo'/></a></td>\n");
 746         }
 747
 748         html("<td class='main'>");
 749         if (ctx->repo) {
 750                 cgit_index_link("index", NULL, NULL, NULL, 0);
 751                 html(" : ");
 752                 cgit_summary_link(ctx->repo->name, ctx->repo->name, NULL, NULL);
 753                 html("</td><td class='form'>");
 754                 html("<form method='get' action=''>\n");
 755                 cgit_add_hidden_formfields(0, 1, ctx->qry.page);
 756                 html("<select name='h' onchange='this.form.submit();'>\n");
 757                 for_each_branch_ref(print_branch_option, ctx->qry.head);
 758                 html("</select> ");
 759                 html("<input type='submit' name='' value='switch'/>");
 760                 html("</form>");
 761         } else
 762                 html_txt(ctx->cfg.root_title);
 763         html("</td></tr>\n");
 764
 765         html("<tr><td class='sub'>");
 766         if (ctx->repo) {
 767                 html_txt(ctx->repo->desc);
 768                 html("</td><td class='sub right'>");
 769                 html_txt(ctx->repo->owner);
 770         } else {
 771                 if (ctx->cfg.root_desc)
 772                         html_txt(ctx->cfg.root_desc);
 773                 else if (ctx->cfg.index_info)
 774                         html_include(ctx->cfg.index_info);
 775         }
 776         html("</td></tr></table>\n");
 777 }
 778
 779 void cgit_print_pageheader(struct cgit_context *ctx)
 780 {
 781         html("<div id='cgit'>");
 782         if (!ctx->cfg.noheader)
 783                 print_header(ctx);
 784
 785         html("<table class='tabs'><tr><td>\n");
 786         if (ctx->repo) {
 787                 cgit_summary_link("summary", NULL, hc(ctx, "summary"),
 788                                   ctx->qry.head);
 789                 cgit_refs_link("refs", NULL, hc(ctx, "refs"), ctx->qry.head,
 790                                ctx->qry.sha1, NULL);
 791                 cgit_log_link("log", NULL, hc(ctx, "log"), ctx->qry.head,
 792                               NULL, NULL, 0, NULL, NULL, ctx->qry.showmsg);
 793                 cgit_tree_link("tree", NULL, hc(ctx, "tree"), ctx->qry.head,
 794                                ctx->qry.sha1, NULL);
 795                 cgit_commit_link("commit", NULL, hc(ctx, "commit"),
 796                                  ctx->qry.head, ctx->qry.sha1, 0);
 797                 cgit_diff_link("diff", NULL, hc(ctx, "diff"), ctx->qry.head,
 798                                ctx->qry.sha1, ctx->qry.sha2, NULL, 0);
 799                 if (ctx->repo->max_stats)
 800                         cgit_stats_link("stats", NULL, hc(ctx, "stats"),
 801                                         ctx->qry.head, NULL);
 802                 if (ctx->repo->readme)
 803                         reporevlink("about", "about", NULL,
 804                                     hc(ctx, "about"), ctx->qry.head, NULL,
 805                                     NULL);
 806                 html("</td><td class='form'>");
 807                 html("<form class='right' method='get' action='");
 808                 if (ctx->cfg.virtual_root)
 809                         html_url_path(cgit_fileurl(ctx->qry.repo, "log",
 810                                                    ctx->qry.vpath, NULL));
 811                 html("'>\n");
 812                 cgit_add_hidden_formfields(1, 0, "log");
 813                 html("<select name='qt'>\n");
 814                 html_option("grep", "log msg", ctx->qry.grep);
 815                 html_option("author", "author", ctx->qry.grep);
 816                 html_option("committer", "committer", ctx->qry.grep);
 817                 html("</select>\n");
 818                 html("<input class='txt' type='text' size='10' name='q' value='");
 819                 html_attr(ctx->qry.search);
 820                 html("'/>\n");
 821                 html("<input type='submit' value='search'/>\n");
 822                 html("</form>\n");
 823         } else {
 824                 site_link(NULL, "index", NULL, hc(ctx, "repolist"), NULL, 0);
 825                 if (ctx->cfg.root_readme)
 826                         site_link("about", "about", NULL, hc(ctx, "about"),
 827                                   NULL, 0);
 828                 html("</td><td class='form'>");
 829                 html("<form method='get' action='");
 830                 html_attr(cgit_rooturl());
 831                 html("'>\n");
 832                 html("<input type='text' name='q' size='10' value='");
 833                 html_attr(ctx->qry.search);
 834                 html("'/>\n");
 835                 html("<input type='submit' value='search'/>\n");
 836                 html("</form>");
 837         }
 838         html("</td></tr></table>\n");
 839         if (ctx->qry.vpath) {
 840                 html("<div class='path'>");
 841                 html("path: ");
 842                 cgit_print_path_crumbs(ctx, ctx->qry.vpath);
 843                 html("</div>");
 844         }
 845         html("<div class='content'>");
 846 }
 847
 848 void cgit_print_filemode(unsigned short mode)
 849 {
 850         if (S_ISDIR(mode))
 851                 html("d");
 852         else if (S_ISLNK(mode))
 853                 html("l");
 854         else if (S_ISGITLINK(mode))
 855                 html("m");
 856         else
 857                 html("-");
 858         html_fileperm(mode >> 6);
 859         html_fileperm(mode >> 3);
 860         html_fileperm(mode);
 861 }
 862
 863 void cgit_print_snapshot_links(const char *repo, const char *head,
 864                                const char *hex, int snapshots)
 865 {
 866         const struct cgit_snapshot_format* f;
 867         char *prefix;
 868         char *filename;
 869         unsigned char sha1[20];
 870
 871         if (get_sha1(fmt("refs/tags/%s", hex), sha1) == 0 &&
 872             (hex[0] == 'v' || hex[0] == 'V') && isdigit(hex[1]))
 873                 hex++;
 874         prefix = xstrdup(fmt("%s-%s", cgit_repobasename(repo), hex));
 875         for (f = cgit_snapshot_formats; f->suffix; f++) {
 876                 if (!(snapshots & f->bit))
 877                         continue;
 878                 filename = fmt("%s%s", prefix, f->suffix);
 879                 cgit_snapshot_link(filename, NULL, NULL, NULL, NULL, filename);
 880                 html("<br/>");
 881         }
 882 }