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
  11 const char cgit_doctype[] =
  12 "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n"
  13 "  \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n";
  14
  15 static char *http_date(time_t t)
  16 {
  17         static char day[][4] =
  18                 {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
  19         static char month[][4] =
  20                 {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
  21                  "Jul", "Aug", "Sep", "Oct", "Now", "Dec"};
  22         struct tm *tm = gmtime(&t);
  23         return fmt("%s, %02d %s %04d %02d:%02d:%02d GMT", day[tm->tm_wday],
  24                    tm->tm_mday, month[tm->tm_mon], 1900+tm->tm_year,
  25                    tm->tm_hour, tm->tm_min, tm->tm_sec);
  26 }
  27
  28 static long ttl_seconds(long ttl)
  29 {
  30         if (ttl<0)
  31                 return 60 * 60 * 24 * 365;
  32         else
  33                 return ttl * 60;
  34 }
  35
  36 void cgit_print_error(char *msg)
  37 {
  38         html("<div class='error'>");
  39         html_txt(msg);
  40         html("</div>\n");
  41 }
  42
  43 char *cgit_rooturl()
  44 {
  45         if (cgit_virtual_root)
  46                 return fmt("%s/", cgit_virtual_root);
  47         else
  48                 return cgit_script_name;
  49 }
  50
  51 char *cgit_repourl(const char *reponame)
  52 {
  53         if (cgit_virtual_root) {
  54                 return fmt("%s/%s/", cgit_virtual_root, reponame);
  55         } else {
  56                 return fmt("?r=%s", reponame);
  57         }
  58 }
  59
  60 char *cgit_fileurl(const char *reponame, const char *pagename,
  61                    const char *filename, const char *query)
  62 {
  63         if (cgit_virtual_root) {
  64                 if (query)
  65                         return fmt("%s/%s/%s/%s?%s", cgit_virtual_root, reponame,
  66                                    pagename, filename?filename:"", query);
  67                 else
  68                         return fmt("%s/%s/%s/", cgit_virtual_root, reponame,
  69                                    pagename);
  70         } else {
  71                 if (query)
  72                         return fmt("?r=%s&amp;p=%s&amp;%s", reponame, pagename, query);
  73                 else
  74                         return fmt("?r=%s&amp;p=%s", reponame, pagename);
  75         }
  76 }
  77
  78 char *cgit_pageurl(const char *reponame, const char *pagename,
  79                    const char *query)
  80 {
  81         return cgit_fileurl(reponame,pagename,0,query);
  82 }
  83
  84 const char *cgit_repobasename(const char *reponame)
  85 {
  86         /* I assume we don't need to store more than one repo basename */
  87         static char rvbuf[1024];
  88         int p;
  89         const char *rv;
  90         strncpy(rvbuf,reponame,sizeof(rvbuf));
  91         if(rvbuf[sizeof(rvbuf)-1])
  92                 die("cgit_repobasename: truncated repository name '%s'", reponame);
  93         p = strlen(rvbuf)-1;
  94         /* strip trailing slashes */
  95         while(p && rvbuf[p]=='/') rvbuf[p--]=0;
  96         /* strip trailing .git */
  97         if(p>=3 && !strncmp(&rvbuf[p-3],".git",4)) {
  98                 p -= 3; rvbuf[p--] = 0;
  99         }
 100         /* strip more trailing slashes if any */
 101         while( p && rvbuf[p]=='/') rvbuf[p--]=0;
 102         /* find last slash in the remaining string */
 103         rv = strrchr(rvbuf,'/');
 104         if(rv)
 105                 return ++rv;
 106         return rvbuf;
 107 }
 108
 109 char *cgit_currurl()
 110 {
 111         if (!cgit_virtual_root)
 112                 return cgit_script_name;
 113         else if (cgit_query_page)
 114                 return fmt("%s/%s/%s/", cgit_virtual_root, cgit_query_repo, cgit_query_page);
 115         else if (cgit_query_repo)
 116                 return fmt("%s/%s/", cgit_virtual_root, cgit_query_repo);
 117         else
 118                 return fmt("%s/", cgit_virtual_root);
 119 }
 120
 121 static char *repolink(char *title, char *class, char *page, char *head,
 122                       char *path)
 123 {
 124         char *delim = "?";
 125
 126         html("<a");
 127         if (title) {
 128                 html(" title='");
 129                 html_attr(title);
 130                 html("'");
 131         }
 132         if (class) {
 133                 html(" class='");
 134                 html_attr(class);
 135                 html("'");
 136         }
 137         html(" href='");
 138         if (cgit_virtual_root) {
 139                 html_attr(cgit_virtual_root);
 140                 if (cgit_virtual_root[strlen(cgit_virtual_root) - 1] != '/')
 141                         html("/");
 142                 html_attr(cgit_repo->url);
 143                 if (cgit_repo->url[strlen(cgit_repo->url) - 1] != '/')
 144                         html("/");
 145                 if (page) {
 146                         html(page);
 147                         html("/");
 148                         if (path)
 149                                 html_attr(path);
 150                 }
 151         } else {
 152                 html(cgit_script_name);
 153                 html("?url=");
 154                 html_attr(cgit_repo->url);
 155                 if (cgit_repo->url[strlen(cgit_repo->url) - 1] != '/')
 156                         html("/");
 157                 if (page) {
 158                         html(page);
 159                         html("/");
 160                         if (path)
 161                                 html_attr(path);
 162                 }
 163                 delim = "&amp;";
 164         }
 165         if (head && strcmp(head, cgit_repo->defbranch)) {
 166                 html(delim);
 167                 html("h=");
 168                 html_attr(head);
 169                 delim = "&amp;";
 170         }
 171         return fmt("%s", delim);
 172 }
 173
 174 static void reporevlink(char *page, char *name, char *title, char *class,
 175                         char *head, char *rev, char *path)
 176 {
 177         char *delim;
 178
 179         delim = repolink(title, class, page, head, path);
 180         if (rev && strcmp(rev, cgit_query_head)) {
 181                 html(delim);
 182                 html("id=");
 183                 html_attr(rev);
 184         }
 185         html("'>");
 186         html_txt(name);
 187         html("</a>");
 188 }
 189
 190 void cgit_tree_link(char *name, char *title, char *class, char *head,
 191                     char *rev, char *path)
 192 {
 193         reporevlink("tree", name, title, class, head, rev, path);
 194 }
 195
 196 void cgit_log_link(char *name, char *title, char *class, char *head,
 197                    char *rev, char *path, int ofs, char *grep, char *pattern)
 198 {
 199         char *delim;
 200
 201         delim = repolink(title, class, "log", head, path);
 202         if (rev && strcmp(rev, cgit_query_head)) {
 203                 html(delim);
 204                 html("id=");
 205                 html_attr(rev);
 206                 delim = "&";
 207         }
 208         if (grep && pattern) {
 209                 html(delim);
 210                 html("qt=");
 211                 html_attr(grep);
 212                 delim = "&";
 213                 html(delim);
 214                 html("q=");
 215                 html_attr(pattern);
 216         }
 217         if (ofs > 0) {
 218                 html(delim);
 219                 html("ofs=");
 220                 htmlf("%d", ofs);
 221         }
 222         html("'>");
 223         html_txt(name);
 224         html("</a>");
 225 }
 226
 227 void cgit_commit_link(char *name, char *title, char *class, char *head,
 228                       char *rev)
 229 {
 230         if (strlen(name) > cgit_max_msg_len && cgit_max_msg_len >= 15) {
 231                 name[cgit_max_msg_len] = '\0';
 232                 name[cgit_max_msg_len - 1] = '.';
 233                 name[cgit_max_msg_len - 2] = '.';
 234                 name[cgit_max_msg_len - 3] = '.';
 235         }
 236         reporevlink("commit", name, title, class, head, rev, NULL);
 237 }
 238
 239 void cgit_refs_link(char *name, char *title, char *class, char *head,
 240                     char *rev, char *path)
 241 {
 242         reporevlink("refs", name, title, class, head, rev, path);
 243 }
 244
 245 void cgit_snapshot_link(char *name, char *title, char *class, char *head,
 246                         char *rev, char *archivename)
 247 {
 248         reporevlink("snapshot", name, title, class, head, rev, archivename);
 249 }
 250
 251 void cgit_diff_link(char *name, char *title, char *class, char *head,
 252                     char *new_rev, char *old_rev, char *path)
 253 {
 254         char *delim;
 255
 256         delim = repolink(title, class, "diff", head, path);
 257         if (new_rev && strcmp(new_rev, cgit_query_head)) {
 258                 html(delim);
 259                 html("id=");
 260                 html_attr(new_rev);
 261                 delim = "&amp;";
 262         }
 263         if (old_rev) {
 264                 html(delim);
 265                 html("id2=");
 266                 html_attr(old_rev);
 267         }
 268         html("'>");
 269         html_txt(name);
 270         html("</a>");
 271 }
 272
 273 void cgit_object_link(struct object *obj)
 274 {
 275         char *page, *arg, *url;
 276
 277         if (obj->type == OBJ_COMMIT) {
 278                 cgit_commit_link(fmt("commit %s", sha1_to_hex(obj->sha1)), NULL, NULL,
 279                                  cgit_query_head, sha1_to_hex(obj->sha1));
 280                 return;
 281         } else if (obj->type == OBJ_TREE) {
 282                 page = "tree";
 283                 arg = "id";
 284         } else if (obj->type == OBJ_TAG) {
 285                 page = "tag";
 286                 arg = "id";
 287         } else {
 288                 page = "blob";
 289                 arg = "id";
 290         }
 291
 292         url = cgit_pageurl(cgit_query_repo, page,
 293                            fmt("%s=%s", arg, sha1_to_hex(obj->sha1)));
 294         html_link_open(url, NULL, NULL);
 295         htmlf("%s %s", typename(obj->type),
 296               sha1_to_hex(obj->sha1));
 297         html_link_close();
 298 }
 299
 300 void cgit_print_date(time_t secs, char *format)
 301 {
 302         char buf[64];
 303         struct tm *time;
 304
 305         time = gmtime(&secs);
 306         strftime(buf, sizeof(buf)-1, format, time);
 307         html_txt(buf);
 308 }
 309
 310 void cgit_print_age(time_t t, time_t max_relative, char *format)
 311 {
 312         time_t now, secs;
 313
 314         time(&now);
 315         secs = now - t;
 316
 317         if (secs > max_relative && max_relative >= 0) {
 318                 cgit_print_date(t, format);
 319                 return;
 320         }
 321
 322         if (secs < TM_HOUR * 2) {
 323                 htmlf("<span class='age-mins'>%.0f min.</span>",
 324                       secs * 1.0 / TM_MIN);
 325                 return;
 326         }
 327         if (secs < TM_DAY * 2) {
 328                 htmlf("<span class='age-hours'>%.0f hours</span>",
 329                       secs * 1.0 / TM_HOUR);
 330                 return;
 331         }
 332         if (secs < TM_WEEK * 2) {
 333                 htmlf("<span class='age-days'>%.0f days</span>",
 334                       secs * 1.0 / TM_DAY);
 335                 return;
 336         }
 337         if (secs < TM_MONTH * 2) {
 338                 htmlf("<span class='age-weeks'>%.0f weeks</span>",
 339                       secs * 1.0 / TM_WEEK);
 340                 return;
 341         }
 342         if (secs < TM_YEAR * 2) {
 343                 htmlf("<span class='age-months'>%.0f months</span>",
 344                       secs * 1.0 / TM_MONTH);
 345                 return;
 346         }
 347         htmlf("<span class='age-years'>%.0f years</span>",
 348               secs * 1.0 / TM_YEAR);
 349 }
 350
 351 void cgit_print_docstart(char *title, struct cacheitem *item)
 352 {
 353         html("Content-Type: text/html; charset=utf-8\n");
 354         htmlf("Last-Modified: %s\n", http_date(item->st.st_mtime));
 355         htmlf("Expires: %s\n", http_date(item->st.st_mtime +
 356                                          ttl_seconds(item->ttl)));
 357         html("\n");
 358         html(cgit_doctype);
 359         html("<html>\n");
 360         html("<head>\n");
 361         html("<title>");
 362         html_txt(title);
 363         html("</title>\n");
 364         htmlf("<meta name='generator' content='cgit %s'/>\n", cgit_version);
 365         html("<link rel='stylesheet' type='text/css' href='");
 366         html_attr(cgit_css);
 367         html("'/>\n");
 368         html("</head>\n");
 369         html("<body>\n");
 370 }
 371
 372 void cgit_print_docend()
 373 {
 374         html("</td>\n</tr>\n<table>\n</body>\n</html>\n");
 375 }
 376
 377 int print_branch_option(const char *refname, const unsigned char *sha1,
 378                         int flags, void *cb_data)
 379 {
 380         char *name = (char *)refname;
 381         html_option(name, name, cgit_query_head);
 382         return 0;
 383 }
 384
 385 int print_archive_ref(const char *refname, const unsigned char *sha1,
 386                        int flags, void *cb_data)
 387 {
 388         struct tag *tag;
 389         struct taginfo *info;
 390         struct object *obj;
 391         char buf[256], *url;
 392         unsigned char fileid[20];
 393         int *header = (int *)cb_data;
 394
 395         if (prefixcmp(refname, "refs/archives"))
 396                 return 0;
 397         strncpy(buf, refname+14, sizeof(buf));
 398         obj = parse_object(sha1);
 399         if (!obj)
 400                 return 1;
 401         if (obj->type == OBJ_TAG) {
 402                 tag = lookup_tag(sha1);
 403                 if (!tag || parse_tag(tag) || !(info = cgit_parse_tag(tag)))
 404                         return 0;
 405                 hashcpy(fileid, tag->tagged->sha1);
 406         } else if (obj->type != OBJ_BLOB) {
 407                 return 0;
 408         } else {
 409                 hashcpy(fileid, sha1);
 410         }
 411         if (!*header) {
 412                 html("<p><h1>download</h1>");
 413                 *header = 1;
 414         }
 415         url = cgit_pageurl(cgit_query_repo, "blob",
 416                            fmt("id=%s&amp;path=%s", sha1_to_hex(fileid),
 417                                buf));
 418         html_link_open(url, NULL, "menu");
 419         html_txt(strlpart(buf, 20));
 420         html_link_close();
 421         return 0;
 422 }
 423
 424 void add_hidden_formfields(int incl_head, int incl_search)
 425 {
 426         if (!cgit_virtual_root) {
 427                 if (cgit_query_repo)
 428                         html_hidden("r", cgit_query_repo);
 429                 if (cgit_query_page)
 430                         html_hidden("p", cgit_query_page);
 431         }
 432
 433         if (incl_head && strcmp(cgit_query_head, cgit_repo->defbranch))
 434                 html_hidden("h", cgit_query_head);
 435
 436         if (cgit_query_sha1)
 437                 html_hidden("id", cgit_query_sha1);
 438         if (cgit_query_sha2)
 439                 html_hidden("id2", cgit_query_sha2);
 440
 441         if (incl_search) {
 442                 if (cgit_query_grep)
 443                         html_hidden("qt", cgit_query_grep);
 444                 if (cgit_query_search)
 445                         html_hidden("q", cgit_query_search);
 446         }
 447 }
 448
 449 void cgit_print_pageheader(char *title, int show_search)
 450 {
 451         static const char *default_info = "This is cgit, a fast webinterface for git repositories";
 452         int header = 0;
 453
 454         html("<div id='sidebar'>\n");
 455         html("<a href='");
 456         html_attr(cgit_rooturl());
 457         htmlf("'><div id='logo'><img src='%s' alt='cgit'/></div></a>\n",
 458               cgit_logo);
 459         html("<div class='infobox'>");
 460         if (cgit_query_repo) {
 461                 html("<h1>");
 462                 html_txt(strrpart(cgit_repo->name, 20));
 463                 html("</h1>\n");
 464                 html_txt(cgit_repo->desc);
 465                 if (cgit_repo->owner) {
 466                         html("<p>\n<h1>owner</h1>\n");
 467                         html_txt(cgit_repo->owner);
 468                 }
 469                 html("<p>\n<h1>navigate</h1>\n");
 470                 reporevlink(NULL, "summary", NULL, "menu", cgit_query_head,
 471                             NULL, NULL);
 472                 cgit_log_link("log", NULL, "menu", cgit_query_head,
 473                               cgit_query_sha1, cgit_query_path, 0, NULL, NULL);
 474                 cgit_tree_link("tree", NULL, "menu", cgit_query_head,
 475                                cgit_query_sha1, NULL);
 476                 cgit_commit_link("commit", NULL, "menu", cgit_query_head,
 477                               cgit_query_sha1);
 478                 cgit_diff_link("diff", NULL, "menu", cgit_query_head,
 479                                cgit_query_sha1, cgit_query_sha2,
 480                                cgit_query_path);
 481
 482                 for_each_ref(print_archive_ref, &header);
 483
 484                 html("<p>\n<h1>branch</h1>\n");
 485                 html("<form method='get' action=''>\n");
 486                 add_hidden_formfields(0, 1);
 487                 html("<select name='h' onchange='this.form.submit();'>\n");
 488                 for_each_branch_ref(print_branch_option, cgit_query_head);
 489                 html("</select>\n");
 490                 html("</form>\n");
 491
 492                 html("<p>\n<h1>search</h1>\n");
 493                 html("<form method='get' action='");
 494                 html_attr(cgit_pageurl(cgit_query_repo, "log", NULL));
 495                 html("'>\n");
 496                 add_hidden_formfields(1, 0);
 497                 html("<select name='qt'>\n");
 498                 html_option("grep", "log msg", cgit_query_grep);
 499                 html_option("author", "author", cgit_query_grep);
 500                 html_option("committer", "committer", cgit_query_grep);
 501                 html("</select>\n");
 502                 html("<input class='txt' type='text' name='q' value='");
 503                 html_attr(cgit_query_search);
 504                 html("'/>\n");
 505                 html("</form>\n");
 506         } else {
 507                 if (!cgit_index_info || html_include(cgit_index_info))
 508                         html(default_info);
 509         }
 510
 511         html("</div>\n");
 512
 513         html("</div>\n<table class='grid'><tr><td id='content'>\n");
 514 }
 515
 516
 517 void cgit_print_snapshot_start(const char *mimetype, const char *filename,
 518                                struct cacheitem *item)
 519 {
 520         htmlf("Content-Type: %s\n", mimetype);
 521         htmlf("Content-Disposition: inline; filename=\"%s\"\n", filename);
 522         htmlf("Last-Modified: %s\n", http_date(item->st.st_mtime));
 523         htmlf("Expires: %s\n", http_date(item->st.st_mtime +
 524                                          ttl_seconds(item->ttl)));
 525         html("\n");
 526 }
 527
 528 /* vim:set sw=8: */