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, const char *path,
 323                       int toggle_ssdiff)
 324 {
 325         if (strlen(name) > ctx.cfg.max_msg_len && ctx.cfg.max_msg_len >= 15) {
 326                 name[ctx.cfg.max_msg_len] = '\0';
 327                 name[ctx.cfg.max_msg_len - 1] = '.';
 328                 name[ctx.cfg.max_msg_len - 2] = '.';
 329                 name[ctx.cfg.max_msg_len - 3] = '.';
 330         }
 331
 332         char *delim;
 333
 334         delim = repolink(title, class, "commit", head, path);
 335         if (rev && strcmp(rev, ctx.qry.head)) {
 336                 html(delim);
 337                 html("id=");
 338                 html_url_arg(rev);
 339                 delim = "&amp;";
 340         }
 341         if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
 342                 html(delim);
 343                 html("ss=1");
 344         }
 345         html("'>");
 346         html_txt(name);
 347         html("</a>");
 348 }
 349
 350 void cgit_refs_link(const char *name, const char *title, const char *class,
 351                     const char *head, const char *rev, const char *path)
 352 {
 353         reporevlink("refs", name, title, class, head, rev, path);
 354 }
 355
 356 void cgit_snapshot_link(const char *name, const char *title, const char *class,
 357                         const char *head, const char *rev,
 358                         const char *archivename)
 359 {
 360         reporevlink("snapshot", name, title, class, head, rev, archivename);
 361 }
 362
 363 void cgit_diff_link(const char *name, const char *title, const char *class,
 364                     const char *head, const char *new_rev, const char *old_rev,
 365                     const char *path, int toggle_ssdiff)
 366 {
 367         char *delim;
 368
 369         delim = repolink(title, class, "diff", head, path);
 370         if (new_rev && ctx.qry.head != NULL && strcmp(new_rev, ctx.qry.head)) {
 371                 html(delim);
 372                 html("id=");
 373                 html_url_arg(new_rev);
 374                 delim = "&amp;";
 375         }
 376         if (old_rev) {
 377                 html(delim);
 378                 html("id2=");
 379                 html_url_arg(old_rev);
 380                 delim = "&amp;";
 381         }
 382         if ((ctx.qry.ssdiff && !toggle_ssdiff) || (!ctx.qry.ssdiff && toggle_ssdiff)) {
 383                 html(delim);
 384                 html("ss=1");
 385         }
 386         html("'>");
 387         html_txt(name);
 388         html("</a>");
 389 }
 390
 391 void cgit_patch_link(const char *name, const char *title, const char *class,
 392                      const char *head, const char *rev, const char *path)
 393 {
 394         reporevlink("patch", name, title, class, head, rev, path);
 395 }
 396
 397 void cgit_stats_link(const char *name, const char *title, const char *class,
 398                      const char *head, const char *path)
 399 {
 400         reporevlink("stats", name, title, class, head, NULL, path);
 401 }
 402
 403 void cgit_self_link(char *name, const char *title, const char *class,
 404                     struct cgit_context *ctx)
 405 {
 406         if (!strcmp(ctx->qry.page, "repolist"))
 407                 return cgit_index_link(name, title, class, ctx->qry.search,
 408                                        ctx->qry.ofs);
 409         else if (!strcmp(ctx->qry.page, "summary"))
 410                 return cgit_summary_link(name, title, class, ctx->qry.head);
 411         else if (!strcmp(ctx->qry.page, "tag"))
 412                 return cgit_tag_link(name, title, class, ctx->qry.head,
 413                                      ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL);
 414         else if (!strcmp(ctx->qry.page, "tree"))
 415                 return cgit_tree_link(name, title, class, ctx->qry.head,
 416                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 417                                       ctx->qry.path);
 418         else if (!strcmp(ctx->qry.page, "plain"))
 419                 return cgit_plain_link(name, title, class, ctx->qry.head,
 420                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 421                                       ctx->qry.path);
 422         else if (!strcmp(ctx->qry.page, "log"))
 423                 return cgit_log_link(name, title, class, ctx->qry.head,
 424                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 425                                       ctx->qry.path, ctx->qry.ofs,
 426                                       ctx->qry.grep, ctx->qry.search,
 427                                       ctx->qry.showmsg);
 428         else if (!strcmp(ctx->qry.page, "commit"))
 429                 return cgit_commit_link(name, title, class, ctx->qry.head,
 430                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 431                                       ctx->qry.path, 0);
 432         else if (!strcmp(ctx->qry.page, "patch"))
 433                 return cgit_patch_link(name, title, class, ctx->qry.head,
 434                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 435                                       ctx->qry.path);
 436         else if (!strcmp(ctx->qry.page, "refs"))
 437                 return cgit_refs_link(name, title, class, ctx->qry.head,
 438                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 439                                       ctx->qry.path);
 440         else if (!strcmp(ctx->qry.page, "snapshot"))
 441                 return cgit_snapshot_link(name, title, class, ctx->qry.head,
 442                                       ctx->qry.has_sha1 ? ctx->qry.sha1 : NULL,
 443                                       ctx->qry.path);
 444         else if (!strcmp(ctx->qry.page, "diff"))
 445                 return cgit_diff_link(name, title, class, ctx->qry.head,
 446                                       ctx->qry.sha1, ctx->qry.sha2,
 447                                       ctx->qry.path, 0);
 448         else if (!strcmp(ctx->qry.page, "stats"))
 449                 return cgit_stats_link(name, title, class, ctx->qry.head,
 450                                       ctx->qry.path);
 451
 452         /* Don't known how to make link for this page */
 453         repolink(title, class, ctx->qry.page, ctx->qry.head, ctx->qry.path);
 454         html("><!-- cgit_self_link() doesn't know how to make link for page '");
 455         html_txt(ctx->qry.page);
 456         html("' -->");
 457         html_txt(name);
 458         html("</a>");
 459 }
 460
 461 void cgit_object_link(struct object *obj)
 462 {
 463         char *page, *shortrev, *fullrev, *name;
 464
 465         fullrev = sha1_to_hex(obj->sha1);
 466         shortrev = xstrdup(fullrev);
 467         shortrev[10] = '\0';
 468         if (obj->type == OBJ_COMMIT) {
 469                 cgit_commit_link(fmt("commit %s...", shortrev), NULL, NULL,
 470                                  ctx.qry.head, fullrev, NULL, 0);
 471                 return;
 472         } else if (obj->type == OBJ_TREE)
 473                 page = "tree";
 474         else if (obj->type == OBJ_TAG)
 475                 page = "tag";
 476         else
 477                 page = "blob";
 478         name = fmt("%s %s...", typename(obj->type), shortrev);
 479         reporevlink(page, name, NULL, NULL, ctx.qry.head, fullrev, NULL);
 480 }
 481
 482 void cgit_print_date(time_t secs, const char *format, int local_time)
 483 {
 484         char buf[64];
 485         struct tm *time;
 486
 487         if (!secs)
 488                 return;
 489         if(local_time)
 490                 time = localtime(&secs);
 491         else
 492                 time = gmtime(&secs);
 493         strftime(buf, sizeof(buf)-1, format, time);
 494         html_txt(buf);
 495 }
 496
 497 void cgit_print_age(time_t t, time_t max_relative, const char *format)
 498 {
 499         time_t now, secs;
 500
 501         if (!t)
 502                 return;
 503         time(&now);
 504         secs = now - t;
 505
 506         if (secs > max_relative && max_relative >= 0) {
 507                 cgit_print_date(t, format, ctx.cfg.local_time);
 508                 return;
 509         }
 510
 511         if (secs < TM_HOUR * 2) {
 512                 htmlf("<span class='age-mins'>%.0f min.</span>",
 513                       secs * 1.0 / TM_MIN);
 514                 return;
 515         }
 516         if (secs < TM_DAY * 2) {
 517                 htmlf("<span class='age-hours'>%.0f hours</span>",
 518                       secs * 1.0 / TM_HOUR);
 519                 return;
 520         }
 521         if (secs < TM_WEEK * 2) {
 522                 htmlf("<span class='age-days'>%.0f days</span>",
 523                       secs * 1.0 / TM_DAY);
 524                 return;
 525         }
 526         if (secs < TM_MONTH * 2) {
 527                 htmlf("<span class='age-weeks'>%.0f weeks</span>",
 528                       secs * 1.0 / TM_WEEK);
 529                 return;
 530         }
 531         if (secs < TM_YEAR * 2) {
 532                 htmlf("<span class='age-months'>%.0f months</span>",
 533                       secs * 1.0 / TM_MONTH);
 534                 return;
 535         }
 536         htmlf("<span class='age-years'>%.0f years</span>",
 537               secs * 1.0 / TM_YEAR);
 538 }
 539
 540 void cgit_print_http_headers(struct cgit_context *ctx)
 541 {
 542         if (ctx->env.no_http && !strcmp(ctx->env.no_http, "1"))
 543                 return;
 544
 545         if (ctx->page.status)
 546                 htmlf("Status: %d %s\n", ctx->page.status, ctx->page.statusmsg);
 547         if (ctx->page.mimetype && ctx->page.charset)
 548                 htmlf("Content-Type: %s; charset=%s\n", ctx->page.mimetype,
 549                       ctx->page.charset);
 550         else if (ctx->page.mimetype)
 551                 htmlf("Content-Type: %s\n", ctx->page.mimetype);
 552         if (ctx->page.size)
 553                 htmlf("Content-Length: %ld\n", ctx->page.size);
 554         if (ctx->page.filename)
 555                 htmlf("Content-Disposition: inline; filename=\"%s\"\n",
 556                       ctx->page.filename);
 557         htmlf("Last-Modified: %s\n", http_date(ctx->page.modified));
 558         htmlf("Expires: %s\n", http_date(ctx->page.expires));
 559         if (ctx->page.etag)
 560                 htmlf("ETag: \"%s\"\n", ctx->page.etag);
 561         html("\n");
 562         if (ctx->env.request_method && !strcmp(ctx->env.request_method, "HEAD"))
 563                 exit(0);
 564 }
 565
 566 void cgit_print_docstart(struct cgit_context *ctx)
 567 {
 568         if (ctx->cfg.embedded) {
 569                 if (ctx->cfg.header)
 570                         html_include(ctx->cfg.header);
 571                 return;
 572         }
 573
 574         char *host = cgit_hosturl();
 575         html(cgit_doctype);
 576         html("<html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en' lang='en'>\n");
 577         html("<head>\n");
 578         html("<title>");
 579         html_txt(ctx->page.title);
 580         html("</title>\n");
 581         htmlf("<meta name='generator' content='cgit %s'/>\n", cgit_version);
 582         if (ctx->cfg.robots && *ctx->cfg.robots)
 583                 htmlf("<meta name='robots' content='%s'/>\n", ctx->cfg.robots);
 584         html("<link rel='stylesheet' type='text/css' href='");
 585         html_attr(ctx->cfg.css);
 586         html("'/>\n");
 587         if (ctx->cfg.favicon) {
 588                 html("<link rel='shortcut icon' href='");
 589                 html_attr(ctx->cfg.favicon);
 590                 html("'/>\n");
 591         }
 592         if (host && ctx->repo) {
 593                 html("<link rel='alternate' title='Atom feed' href='");
 594                 html(cgit_httpscheme());
 595                 html_attr(cgit_hosturl());
 596                 html_attr(cgit_fileurl(ctx->repo->url, "atom", ctx->qry.vpath,
 597                                        fmt("h=%s", ctx->qry.head)));
 598                 html("' type='application/atom+xml'/>\n");
 599         }
 600         if (ctx->cfg.head_include)
 601                 html_include(ctx->cfg.head_include);
 602         html("</head>\n");
 603         html("<body>\n");
 604         if (ctx->cfg.header)
 605                 html_include(ctx->cfg.header);
 606 }
 607
 608 void cgit_print_docend()
 609 {
 610         html("</div> <!-- class=content -->\n");
 611         if (ctx.cfg.embedded) {
 612                 html("</div> <!-- id=cgit -->\n");
 613                 if (ctx.cfg.footer)
 614                         html_include(ctx.cfg.footer);
 615                 return;
 616         }
 617         if (ctx.cfg.footer)
 618                 html_include(ctx.cfg.footer);
 619         else {
 620                 htmlf("<div class='footer'>generated  by cgit %s at ",
 621                         cgit_version);
 622                 cgit_print_date(time(NULL), FMT_LONGDATE, ctx.cfg.local_time);
 623                 html("</div>\n");
 624         }
 625         html("</div> <!-- id=cgit -->\n");
 626         html("</body>\n</html>\n");
 627 }
 628
 629 int print_branch_option(const char *refname, const unsigned char *sha1,
 630                         int flags, void *cb_data)
 631 {
 632         char *name = (char *)refname;
 633         html_option(name, name, ctx.qry.head);
 634         return 0;
 635 }
 636
 637 int print_archive_ref(const char *refname, const unsigned char *sha1,
 638                        int flags, void *cb_data)
 639 {
 640         struct tag *tag;
 641         struct taginfo *info;
 642         struct object *obj;
 643         char buf[256], *url;
 644         unsigned char fileid[20];
 645         int *header = (int *)cb_data;
 646
 647         if (prefixcmp(refname, "refs/archives"))
 648                 return 0;
 649         strncpy(buf, refname+14, sizeof(buf));
 650         obj = parse_object(sha1);
 651         if (!obj)
 652                 return 1;
 653         if (obj->type == OBJ_TAG) {
 654                 tag = lookup_tag(sha1);
 655                 if (!tag || parse_tag(tag) || !(info = cgit_parse_tag(tag)))
 656                         return 0;
 657                 hashcpy(fileid, tag->tagged->sha1);
 658         } else if (obj->type != OBJ_BLOB) {
 659                 return 0;
 660         } else {
 661                 hashcpy(fileid, sha1);
 662         }
 663         if (!*header) {
 664                 html("<h1>download</h1>\n");
 665                 *header = 1;
 666         }
 667         url = cgit_pageurl(ctx.qry.repo, "blob",
 668                            fmt("id=%s&amp;path=%s", sha1_to_hex(fileid),
 669                                buf));
 670         html_link_open(url, NULL, "menu");
 671         html_txt(strlpart(buf, 20));
 672         html_link_close();
 673         return 0;
 674 }
 675
 676 void cgit_add_hidden_formfields(int incl_head, int incl_search,
 677                                 const char *page)
 678 {
 679         char *url;
 680
 681         if (!ctx.cfg.virtual_root) {
 682                 url = fmt("%s/%s", ctx.qry.repo, page);
 683                 if (ctx.qry.vpath)
 684                         url = fmt("%s/%s", url, ctx.qry.vpath);
 685                 html_hidden("url", url);
 686         }
 687
 688         if (incl_head && ctx.qry.head && ctx.repo->defbranch &&
 689             strcmp(ctx.qry.head, ctx.repo->defbranch))
 690                 html_hidden("h", ctx.qry.head);
 691
 692         if (ctx.qry.sha1)
 693                 html_hidden("id", ctx.qry.sha1);
 694         if (ctx.qry.sha2)
 695                 html_hidden("id2", ctx.qry.sha2);
 696         if (ctx.qry.showmsg)
 697                 html_hidden("showmsg", "1");
 698
 699         if (incl_search) {
 700                 if (ctx.qry.grep)
 701                         html_hidden("qt", ctx.qry.grep);
 702                 if (ctx.qry.search)
 703                         html_hidden("q", ctx.qry.search);
 704         }
 705 }
 706
 707 static const char *hc(struct cgit_context *ctx, const char *page)
 708 {
 709         return strcmp(ctx->qry.page, page) ? NULL : "active";
 710 }
 711
 712 static void cgit_print_path_crumbs(struct cgit_context *ctx, char *path)
 713 {
 714         char *old_path = ctx->qry.path;
 715         char *p = path, *q, *end = path + strlen(path);
 716
 717         ctx->qry.path = NULL;
 718         cgit_self_link("root", NULL, NULL, ctx);
 719         ctx->qry.path = p = path;
 720         while (p < end) {
 721                 if (!(q = strchr(p, '/')))
 722                         q = end;
 723                 *q = '\0';
 724                 html_txt("/");
 725                 cgit_self_link(p, NULL, NULL, ctx);
 726                 if (q < end)
 727                         *q = '/';
 728                 p = q + 1;
 729         }
 730         ctx->qry.path = old_path;
 731 }
 732
 733 static void print_header(struct cgit_context *ctx)
 734 {
 735         html("<table id='header'>\n");
 736         html("<tr>\n");
 737
 738         if (ctx->cfg.logo && ctx->cfg.logo[0] != 0) {
 739                 html("<td class='logo' rowspan='2'><a href='");
 740                 if (ctx->cfg.logo_link)
 741                         html_attr(ctx->cfg.logo_link);
 742                 else
 743                         html_attr(cgit_rooturl());
 744                 html("'><img src='");
 745                 html_attr(ctx->cfg.logo);
 746                 html("' alt='cgit logo'/></a></td>\n");
 747         }
 748
 749         html("<td class='main'>");
 750         if (ctx->repo) {
 751                 cgit_index_link("index", NULL, NULL, NULL, 0);
 752                 html(" : ");
 753                 cgit_summary_link(ctx->repo->name, ctx->repo->name, NULL, NULL);
 754                 html("</td><td class='form'>");
 755                 html("<form method='get' action=''>\n");
 756                 cgit_add_hidden_formfields(0, 1, ctx->qry.page);
 757                 html("<select name='h' onchange='this.form.submit();'>\n");
 758                 for_each_branch_ref(print_branch_option, ctx->qry.head);
 759                 html("</select> ");
 760                 html("<input type='submit' name='' value='switch'/>");
 761                 html("</form>");
 762         } else
 763                 html_txt(ctx->cfg.root_title);
 764         html("</td></tr>\n");
 765
 766         html("<tr><td class='sub'>");
 767         if (ctx->repo) {
 768                 html_txt(ctx->repo->desc);
 769                 html("</td><td class='sub right'>");
 770                 html_txt(ctx->repo->owner);
 771         } else {
 772                 if (ctx->cfg.root_desc)
 773                         html_txt(ctx->cfg.root_desc);
 774                 else if (ctx->cfg.index_info)
 775                         html_include(ctx->cfg.index_info);
 776         }
 777         html("</td></tr></table>\n");
 778 }
 779
 780 void cgit_print_pageheader(struct cgit_context *ctx)
 781 {
 782         html("<div id='cgit'>");
 783         if (!ctx->cfg.noheader)
 784                 print_header(ctx);
 785
 786         html("<table class='tabs'><tr><td>\n");
 787         if (ctx->repo) {
 788                 cgit_summary_link("summary", NULL, hc(ctx, "summary"),
 789                                   ctx->qry.head);
 790                 cgit_refs_link("refs", NULL, hc(ctx, "refs"), ctx->qry.head,
 791                                ctx->qry.sha1, NULL);
 792                 cgit_log_link("log", NULL, hc(ctx, "log"), ctx->qry.head,
 793                               NULL, ctx->qry.vpath, 0, NULL, NULL,
 794                               ctx->qry.showmsg);
 795                 cgit_tree_link("tree", NULL, hc(ctx, "tree"), ctx->qry.head,
 796                                ctx->qry.sha1, ctx->qry.vpath);
 797                 cgit_commit_link("commit", NULL, hc(ctx, "commit"),
 798                                  ctx->qry.head, ctx->qry.sha1, ctx->qry.vpath, 0);
 799                 cgit_diff_link("diff", NULL, hc(ctx, "diff"), ctx->qry.head,
 800                                ctx->qry.sha1, ctx->qry.sha2, ctx->qry.vpath, 0);
 801                 if (ctx->repo->max_stats)
 802                         cgit_stats_link("stats", NULL, hc(ctx, "stats"),
 803                                         ctx->qry.head, ctx->qry.vpath);
 804                 if (ctx->repo->readme)
 805                         reporevlink("about", "about", NULL,
 806                                     hc(ctx, "about"), ctx->qry.head, NULL,
 807                                     NULL);
 808                 html("</td><td class='form'>");
 809                 html("<form class='right' method='get' action='");
 810                 if (ctx->cfg.virtual_root)
 811                         html_url_path(cgit_fileurl(ctx->qry.repo, "log",
 812                                                    ctx->qry.vpath, NULL));
 813                 html("'>\n");
 814                 cgit_add_hidden_formfields(1, 0, "log");
 815                 html("<select name='qt'>\n");
 816                 html_option("grep", "log msg", ctx->qry.grep);
 817                 html_option("author", "author", ctx->qry.grep);
 818                 html_option("committer", "committer", ctx->qry.grep);
 819                 html("</select>\n");
 820                 html("<input class='txt' type='text' size='10' name='q' value='");
 821                 html_attr(ctx->qry.search);
 822                 html("'/>\n");
 823                 html("<input type='submit' value='search'/>\n");
 824                 html("</form>\n");
 825         } else {
 826                 site_link(NULL, "index", NULL, hc(ctx, "repolist"), NULL, 0);
 827                 if (ctx->cfg.root_readme)
 828                         site_link("about", "about", NULL, hc(ctx, "about"),
 829                                   NULL, 0);
 830                 html("</td><td class='form'>");
 831                 html("<form method='get' action='");
 832                 html_attr(cgit_rooturl());
 833                 html("'>\n");
 834                 html("<input type='text' name='q' size='10' value='");
 835                 html_attr(ctx->qry.search);
 836                 html("'/>\n");
 837                 html("<input type='submit' value='search'/>\n");
 838                 html("</form>");
 839         }
 840         html("</td></tr></table>\n");
 841         if (ctx->qry.vpath) {
 842                 html("<div class='path'>");
 843                 html("path: ");
 844                 cgit_print_path_crumbs(ctx, ctx->qry.vpath);
 845                 html("</div>");
 846         }
 847         html("<div class='content'>");
 848 }
 849
 850 void cgit_print_filemode(unsigned short mode)
 851 {
 852         if (S_ISDIR(mode))
 853                 html("d");
 854         else if (S_ISLNK(mode))
 855                 html("l");
 856         else if (S_ISGITLINK(mode))
 857                 html("m");
 858         else
 859                 html("-");
 860         html_fileperm(mode >> 6);
 861         html_fileperm(mode >> 3);
 862         html_fileperm(mode);
 863 }
 864
 865 void cgit_print_snapshot_links(const char *repo, const char *head,
 866                                const char *hex, int snapshots)
 867 {
 868         const struct cgit_snapshot_format* f;
 869         char *prefix;
 870         char *filename;
 871         unsigned char sha1[20];
 872
 873         if (get_sha1(fmt("refs/tags/%s", hex), sha1) == 0 &&
 874             (hex[0] == 'v' || hex[0] == 'V') && isdigit(hex[1]))
 875                 hex++;
 876         prefix = xstrdup(fmt("%s-%s", cgit_repobasename(repo), hex));
 877         for (f = cgit_snapshot_formats; f->suffix; f++) {
 878                 if (!(snapshots & f->bit))
 879                         continue;
 880                 filename = fmt("%s%s", prefix, f->suffix);
 881                 cgit_snapshot_link(filename, NULL, NULL, NULL, NULL, filename);
 882                 html("<br/>");
 883         }
 884 }