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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", "Now", "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(char *msg)
31 {
32         html("<div class='error'>");
33         html_txt(msg);
34         html("</div>\n");
35 }
36
37 char *cgit_rooturl()
38 {
39         if (ctx.cfg.virtual_root)
40                 return fmt("%s/", ctx.cfg.virtual_root);
41         else
42                 return ctx.cfg.script_name;
43 }
44
45 char *cgit_repourl(const char *reponame)
46 {
47         if (ctx.cfg.virtual_root) {
48                 return fmt("%s/%s/", ctx.cfg.virtual_root, reponame);
49         } else {
50                 return fmt("?r=%s", reponame);
51         }
52 }
53
54 char *cgit_fileurl(const char *reponame, const char *pagename,
55                    const char *filename, const char *query)
56 {
57         char *tmp;
58         char *delim;
59
60         if (ctx.cfg.virtual_root) {
61                 tmp = fmt("%s/%s/%s/%s", ctx.cfg.virtual_root, reponame,
62                           pagename, (filename ? filename:""));
63                 delim = "?";
64         } else {
65                 tmp = fmt("?url=%s/%s/%s", reponame, pagename,
66                           (filename ? filename : ""));
67                 delim = "&";
68         }
69         if (query)
70                 tmp = fmt("%s%s%s", tmp, delim, query);
71         return tmp;
72 }
73
74 char *cgit_pageurl(const char *reponame, const char *pagename,
75                    const char *query)
76 {
77         return cgit_fileurl(reponame,pagename,0,query);
78 }
79
80 const char *cgit_repobasename(const char *reponame)
81 {
82         /* I assume we don't need to store more than one repo basename */
83         static char rvbuf[1024];
84         int p;
85         const char *rv;
86         strncpy(rvbuf,reponame,sizeof(rvbuf));
87         if(rvbuf[sizeof(rvbuf)-1])
88                 die("cgit_repobasename: truncated repository name '%s'", reponame);
89         p = strlen(rvbuf)-1;
90         /* strip trailing slashes */
91         while(p && rvbuf[p]=='/') rvbuf[p--]=0;
92         /* strip trailing .git */
93         if(p>=3 && !strncmp(&rvbuf[p-3],".git",4)) {
94                 p -= 3; rvbuf[p--] = 0;
95         }
96         /* strip more trailing slashes if any */
97         while( p && rvbuf[p]=='/') rvbuf[p--]=0;
98         /* find last slash in the remaining string */
99         rv = strrchr(rvbuf,'/');
100         if(rv)
101                 return ++rv;
102         return rvbuf;
103 }
104
105 char *cgit_currurl()
106 {
107         if (!ctx.cfg.virtual_root)
108                 return ctx.cfg.script_name;
109         else if (ctx.qry.page)
110                 return fmt("%s/%s/%s/", ctx.cfg.virtual_root, ctx.qry.repo, ctx.qry.page);
111         else if (ctx.qry.repo)
112                 return fmt("%s/%s/", ctx.cfg.virtual_root, ctx.qry.repo);
113         else
114                 return fmt("%s/", ctx.cfg.virtual_root);
115 }
116
117 static void site_url(char *page, char *search, int ofs)
118 {
119         char *delim = "?";
120
121         if (ctx.cfg.virtual_root) {
122                 html_attr(ctx.cfg.virtual_root);
123                 if (ctx.cfg.virtual_root[strlen(ctx.cfg.virtual_root) - 1] != '/')
124                         html("/");
125         } else
126                 html(ctx.cfg.script_name);
127
128         if (page) {
129                 htmlf("?p=%s", page);
130                 delim = "&";
131         }
132         if (search) {
133                 html(delim);
134                 html("q=");
135                 html_attr(search);
136                 delim = "&";
137         }
138         if (ofs) {
139                 html(delim);
140                 htmlf("ofs=%d", ofs);
141         }
142 }
143
144 static void site_link(char *page, char *name, char *title, char *class,
145                       char *search, int ofs)
146 {
147         html("<a");
148         if (title) {
149                 html(" title='");
150                 html_attr(title);
151                 html("'");
152         }
153         if (class) {
154                 html(" class='");
155                 html_attr(class);
156                 html("'");
157         }
158         html(" href='");
159         site_url(page, search, ofs);
160         html("'>");
161         html_txt(name);
162         html("</a>");
163 }
164
165 void cgit_index_link(char *name, char *title, char *class, char *pattern,
166                      int ofs)
167 {
168         site_link(NULL, name, title, class, pattern, ofs);
169 }
170
171 static char *repolink(char *title, char *class, char *page, char *head,
172                       char *path)
173 {
174         char *delim = "?";
175
176         html("<a");
177         if (title) {
178                 html(" title='");
179                 html_attr(title);
180                 html("'");
181         }
182         if (class) {
183                 html(" class='");
184                 html_attr(class);
185                 html("'");
186         }
187         html(" href='");
188         if (ctx.cfg.virtual_root) {
189                 html_attr(ctx.cfg.virtual_root);
190                 if (ctx.cfg.virtual_root[strlen(ctx.cfg.virtual_root) - 1] != '/')
191                         html("/");
192                 html_attr(ctx.repo->url);
193                 if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
194                         html("/");
195                 if (page) {
196                         html(page);
197                         html("/");
198                         if (path)
199                                 html_attr(path);
200                 }
201         } else {
202                 html(ctx.cfg.script_name);
203                 html("?url=");
204                 html_attr(ctx.repo->url);
205                 if (ctx.repo->url[strlen(ctx.repo->url) - 1] != '/')
206                         html("/");
207                 if (page) {
208                         html(page);
209                         html("/");
210                         if (path)
211                                 html_attr(path);
212                 }
213                 delim = "&amp;";
214         }
215         if (head && strcmp(head, ctx.repo->defbranch)) {
216                 html(delim);
217                 html("h=");
218                 html_attr(head);
219                 delim = "&amp;";
220         }
221         return fmt("%s", delim);
222 }
223
224 static void reporevlink(char *page, char *name, char *title, char *class,
225                         char *head, char *rev, char *path)
226 {
227         char *delim;
228
229         delim = repolink(title, class, page, head, path);
230         if (rev && strcmp(rev, ctx.qry.head)) {
231                 html(delim);
232                 html("id=");
233                 html_attr(rev);
234         }
235         html("'>");
236         html_txt(name);
237         html("</a>");
238 }
239
240 void cgit_tree_link(char *name, char *title, char *class, char *head,
241                     char *rev, char *path)
242 {
243         reporevlink("tree", name, title, class, head, rev, path);
244 }
245
246 void cgit_log_link(char *name, char *title, char *class, char *head,
247                    char *rev, char *path, int ofs, char *grep, char *pattern)
248 {
249         char *delim;
250
251         delim = repolink(title, class, "log", head, path);
252         if (rev && strcmp(rev, ctx.qry.head)) {
253                 html(delim);
254                 html("id=");
255                 html_attr(rev);
256                 delim = "&";
257         }
258         if (grep && pattern) {
259                 html(delim);
260                 html("qt=");
261                 html_attr(grep);
262                 delim = "&";
263                 html(delim);
264                 html("q=");
265                 html_attr(pattern);
266         }
267         if (ofs > 0) {
268                 html(delim);
269                 html("ofs=");
270                 htmlf("%d", ofs);
271         }
272         html("'>");
273         html_txt(name);
274         html("</a>");
275 }
276
277 void cgit_commit_link(char *name, char *title, char *class, char *head,
278                       char *rev)
279 {
280         if (strlen(name) > ctx.cfg.max_msg_len && ctx.cfg.max_msg_len >= 15) {
281                 name[ctx.cfg.max_msg_len] = '\0';
282                 name[ctx.cfg.max_msg_len - 1] = '.';
283                 name[ctx.cfg.max_msg_len - 2] = '.';
284                 name[ctx.cfg.max_msg_len - 3] = '.';
285         }
286         reporevlink("commit", name, title, class, head, rev, NULL);
287 }
288
289 void cgit_refs_link(char *name, char *title, char *class, char *head,
290                     char *rev, char *path)
291 {
292         reporevlink("refs", name, title, class, head, rev, path);
293 }
294
295 void cgit_snapshot_link(char *name, char *title, char *class, char *head,
296                         char *rev, char *archivename)
297 {
298         reporevlink("snapshot", name, title, class, head, rev, archivename);
299 }
300
301 void cgit_diff_link(char *name, char *title, char *class, char *head,
302                     char *new_rev, char *old_rev, char *path)
303 {
304         char *delim;
305
306         delim = repolink(title, class, "diff", head, path);
307         if (new_rev && strcmp(new_rev, ctx.qry.head)) {
308                 html(delim);
309                 html("id=");
310                 html_attr(new_rev);
311                 delim = "&amp;";
312         }
313         if (old_rev) {
314                 html(delim);
315                 html("id2=");
316                 html_attr(old_rev);
317         }
318         html("'>");
319         html_txt(name);
320         html("</a>");
321 }
322
323 void cgit_patch_link(char *name, char *title, char *class, char *head,
324                      char *rev)
325 {
326         reporevlink("patch", name, title, class, head, rev, NULL);
327 }
328
329 void cgit_object_link(struct object *obj)
330 {
331         char *page, *arg, *url;
332
333         if (obj->type == OBJ_COMMIT) {
334                 cgit_commit_link(fmt("commit %s", sha1_to_hex(obj->sha1)), NULL, NULL,
335                                  ctx.qry.head, sha1_to_hex(obj->sha1));
336                 return;
337         } else if (obj->type == OBJ_TREE) {
338                 page = "tree";
339                 arg = "id";
340         } else if (obj->type == OBJ_TAG) {
341                 page = "tag";
342                 arg = "id";
343         } else {
344                 page = "blob";
345                 arg = "id";
346         }
347
348         url = cgit_pageurl(ctx.qry.repo, page,
349                            fmt("%s=%s", arg, sha1_to_hex(obj->sha1)));
350         html_link_open(url, NULL, NULL);
351         htmlf("%s %s", typename(obj->type),
352               sha1_to_hex(obj->sha1));
353         html_link_close();
354 }
355
356 void cgit_print_date(time_t secs, char *format)
357 {
358         char buf[64];
359         struct tm *time;
360
361         if (!secs)
362                 return;
363         time = gmtime(&secs);
364         strftime(buf, sizeof(buf)-1, format, time);
365         html_txt(buf);
366 }
367
368 void cgit_print_age(time_t t, time_t max_relative, char *format)
369 {
370         time_t now, secs;
371
372         if (!t)
373                 return;
374         time(&now);
375         secs = now - t;
376
377         if (secs > max_relative && max_relative >= 0) {
378                 cgit_print_date(t, format);
379                 return;
380         }
381
382         if (secs < TM_HOUR * 2) {
383                 htmlf("<span class='age-mins'>%.0f min.</span>",
384                       secs * 1.0 / TM_MIN);
385                 return;
386         }
387         if (secs < TM_DAY * 2) {
388                 htmlf("<span class='age-hours'>%.0f hours</span>",
389                       secs * 1.0 / TM_HOUR);
390                 return;
391         }
392         if (secs < TM_WEEK * 2) {
393                 htmlf("<span class='age-days'>%.0f days</span>",
394                       secs * 1.0 / TM_DAY);
395                 return;
396         }
397         if (secs < TM_MONTH * 2) {
398                 htmlf("<span class='age-weeks'>%.0f weeks</span>",
399                       secs * 1.0 / TM_WEEK);
400                 return;
401         }
402         if (secs < TM_YEAR * 2) {
403                 htmlf("<span class='age-months'>%.0f months</span>",
404                       secs * 1.0 / TM_MONTH);
405                 return;
406         }
407         htmlf("<span class='age-years'>%.0f years</span>",
408               secs * 1.0 / TM_YEAR);
409 }
410
411 void cgit_print_http_headers(struct cgit_context *ctx)
412 {
413         if (ctx->page.mimetype && ctx->page.charset)
414                 htmlf("Content-Type: %s; charset=%s\n", ctx->page.mimetype,
415                       ctx->page.charset);
416         else if (ctx->page.mimetype)
417                 htmlf("Content-Type: %s\n", ctx->page.mimetype);
418         if (ctx->page.filename)
419                 htmlf("Content-Disposition: inline; filename=\"%s\"\n",
420                       ctx->page.filename);
421         htmlf("Last-Modified: %s\n", http_date(ctx->page.modified));
422         htmlf("Expires: %s\n", http_date(ctx->page.expires));
423         html("\n");
424 }
425
426 void cgit_print_docstart(struct cgit_context *ctx)
427 {
428         html(cgit_doctype);
429         html("<html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en' lang='en'>\n");
430         html("<head>\n");
431         html("<title>");
432         html_txt(ctx->page.title);
433         html("</title>\n");
434         htmlf("<meta name='generator' content='cgit %s'/>\n", cgit_version);
435         if (ctx->cfg.robots && *ctx->cfg.robots)
436                 htmlf("<meta name='robots' content='%s'/>\n", ctx->cfg.robots);
437         html("<link rel='stylesheet' type='text/css' href='");
438         html_attr(ctx->cfg.css);
439         html("'/>\n");
440         if (ctx->cfg.favicon) {
441                 html("<link rel='shortcut icon' href='");
442                 html_attr(ctx->cfg.favicon);
443                 html("'/>\n");
444         }
445         html("</head>\n");
446         html("<body>\n");
447 }
448
449 void cgit_print_docend()
450 {
451         html("</div>");
452         if (ctx.cfg.footer)
453                 html_include(ctx.cfg.footer);
454         else {
455                 html("<div class='footer'>generated ");
456                 cgit_print_date(time(NULL), FMT_LONGDATE);
457                 htmlf(" by cgit %s", cgit_version);
458                 html("</div>\n");
459         }
460         html("</body>\n</html>\n");
461 }
462
463 int print_branch_option(const char *refname, const unsigned char *sha1,
464                         int flags, void *cb_data)
465 {
466         char *name = (char *)refname;
467         html_option(name, name, ctx.qry.head);
468         return 0;
469 }
470
471 int print_archive_ref(const char *refname, const unsigned char *sha1,
472                        int flags, void *cb_data)
473 {
474         struct tag *tag;
475         struct taginfo *info;
476         struct object *obj;
477         char buf[256], *url;
478         unsigned char fileid[20];
479         int *header = (int *)cb_data;
480
481         if (prefixcmp(refname, "refs/archives"))
482                 return 0;
483         strncpy(buf, refname+14, sizeof(buf));
484         obj = parse_object(sha1);
485         if (!obj)
486                 return 1;
487         if (obj->type == OBJ_TAG) {
488                 tag = lookup_tag(sha1);
489                 if (!tag || parse_tag(tag) || !(info = cgit_parse_tag(tag)))
490                         return 0;
491                 hashcpy(fileid, tag->tagged->sha1);
492         } else if (obj->type != OBJ_BLOB) {
493                 return 0;
494         } else {
495                 hashcpy(fileid, sha1);
496         }
497         if (!*header) {
498                 html("<h1>download</h1>\n");
499                 *header = 1;
500         }
501         url = cgit_pageurl(ctx.qry.repo, "blob",
502                            fmt("id=%s&amp;path=%s", sha1_to_hex(fileid),
503                                buf));
504         html_link_open(url, NULL, "menu");
505         html_txt(strlpart(buf, 20));
506         html_link_close();
507         return 0;
508 }
509
510 void add_hidden_formfields(int incl_head, int incl_search, char *page)
511 {
512         char *url;
513
514         if (!ctx.cfg.virtual_root) {
515                 url = fmt("%s/%s", ctx.qry.repo, page);
516                 if (ctx.qry.path)
517                         url = fmt("%s/%s", url, ctx.qry.path);
518                 html_hidden("url", url);
519         }
520
521         if (incl_head && ctx.qry.head && ctx.repo->defbranch &&
522             strcmp(ctx.qry.head, ctx.repo->defbranch))
523                 html_hidden("h", ctx.qry.head);
524
525         if (ctx.qry.sha1)
526                 html_hidden("id", ctx.qry.sha1);
527         if (ctx.qry.sha2)
528                 html_hidden("id2", ctx.qry.sha2);
529
530         if (incl_search) {
531                 if (ctx.qry.grep)
532                         html_hidden("qt", ctx.qry.grep);
533                 if (ctx.qry.search)
534                         html_hidden("q", ctx.qry.search);
535         }
536 }
537
538 char *hc(struct cgit_cmd *cmd, const char *page)
539 {
540         return (strcmp(cmd->name, page) ? NULL : "active");
541 }
542
543 void cgit_print_pageheader(struct cgit_context *ctx)
544 {
545         struct cgit_cmd *cmd = cgit_get_cmd(ctx);
546
547         html("<table id='header'>\n");
548         html("<tr>\n");
549         html("<td class='logo' rowspan='2'><a href='");
550         if (ctx->cfg.logo_link)
551                 html_attr(ctx->cfg.logo_link);
552         else
553                 html_attr(cgit_rooturl());
554         html("'><img src='");
555         html_attr(ctx->cfg.logo);
556         html("' alt='cgit logo'/></a></td>\n");
557
558         html("<td class='main'>");
559         if (ctx->repo) {
560                 cgit_index_link("index", NULL, NULL, NULL, 0);
561                 html(" : ");
562                 reporevlink(NULL, ctx->repo->name, NULL, hc(cmd, "summary"),
563                             ctx->qry.head, NULL, NULL);
564                 html("</td><td class='form'>");
565                 html("<form method='get' action=''>\n");
566                 add_hidden_formfields(0, 1, ctx->qry.page);
567                 html("<select name='h' onchange='this.form.submit();'>\n");
568                 for_each_branch_ref(print_branch_option, ctx->qry.head);
569                 html("</select> ");
570                 html("<input type='submit' name='' value='switch'/>");
571                 html("</form>");
572         } else
573                 html_txt(ctx->cfg.root_title);
574         html("</td></tr>\n");
575
576         html("<tr><td class='sub'>");
577         if (ctx->repo) {
578                 html_txt(ctx->repo->desc);
579                 html("</td><td class='sub right'>");
580                 html_txt(ctx->repo->owner);
581         } else {
582                 if (ctx->cfg.root_desc)
583                         html_txt(ctx->cfg.root_desc);
584                 else if (ctx->cfg.index_info)
585                         html_include(ctx->cfg.index_info);
586         }
587         html("</td></tr></table>\n");
588
589         html("<table class='tabs'><tr><td>\n");
590         if (ctx->repo) {
591                 reporevlink(NULL, "summary", NULL, hc(cmd, "summary"),
592                             ctx->qry.head, NULL, NULL);
593                 cgit_refs_link("refs", NULL, hc(cmd, "refs"), ctx->qry.head,
594                                ctx->qry.sha1, NULL);
595                 cgit_log_link("log", NULL, hc(cmd, "log"), ctx->qry.head,
596                               NULL, NULL, 0, NULL, NULL);
597                 cgit_tree_link("tree", NULL, hc(cmd, "tree"), ctx->qry.head,
598                                ctx->qry.sha1, NULL);
599                 cgit_commit_link("commit", NULL, hc(cmd, "commit"),
600                                  ctx->qry.head, ctx->qry.sha1);
601                 cgit_diff_link("diff", NULL, hc(cmd, "diff"), ctx->qry.head,
602                                ctx->qry.sha1, ctx->qry.sha2, NULL);
603                 if (ctx->repo->readme)
604                         reporevlink("about", "about", NULL,
605                                     hc(cmd, "about"), ctx->qry.head, NULL,
606                                     NULL);
607                 html("</td><td class='form'>");
608                 html("<form class='right' method='get' action='");
609                 if (ctx->cfg.virtual_root)
610                         html_attr(cgit_fileurl(ctx->qry.repo, "log",
611                                                ctx->qry.path, NULL));
612                 html("'>\n");
613                 add_hidden_formfields(1, 0, "log");
614                 html("<select name='qt'>\n");
615                 html_option("grep", "log msg", ctx->qry.grep);
616                 html_option("author", "author", ctx->qry.grep);
617                 html_option("committer", "committer", ctx->qry.grep);
618                 html("</select>\n");
619                 html("<input class='txt' type='text' size='10' name='q' value='");
620                 html_attr(ctx->qry.search);
621                 html("'/>\n");
622                 html("<input type='submit' value='search'/>\n");
623                 html("</form>\n");
624         } else {
625                 site_link(NULL, "index", NULL, hc(cmd, "repolist"), NULL, 0);
626                 if (ctx->cfg.root_readme)
627                         site_link("about", "about", NULL, hc(cmd, "about"),
628                                   NULL, 0);
629                 html("</td><td class='form'>");
630                 html("<form method='get' action='");
631                 html_attr(cgit_rooturl());
632                 html("'>\n");
633                 html("<input type='text' name='q' size='10' value='");
634                 html_attr(ctx->qry.search);
635                 html("'/>\n");
636                 html("<input type='submit' value='search'/>\n");
637                 html("</form>");
638         }
639         html("</td></tr></table>\n");
640         html("<div class='content'>");
641 }
642
643 void cgit_print_filemode(unsigned short mode)
644 {
645         if (S_ISDIR(mode))
646                 html("d");
647         else if (S_ISLNK(mode))
648                 html("l");
649         else if (S_ISGITLINK(mode))
650                 html("m");
651         else
652                 html("-");
653         html_fileperm(mode >> 6);
654         html_fileperm(mode >> 3);
655         html_fileperm(mode);
656 }
657
658 void cgit_print_snapshot_links(const char *repo, const char *head,
659                                const char *hex, int snapshots)
660 {
661         const struct cgit_snapshot_format* f;
662         char *filename;
663
664         for (f = cgit_snapshot_formats; f->suffix; f++) {
665                 if (!(snapshots & f->bit))
666                         continue;
667                 filename = fmt("%s-%s%s", cgit_repobasename(repo), hex,
668                                f->suffix);
669                 cgit_snapshot_link(filename, NULL, NULL, (char *)head,
670                                    (char *)hex, filename);
671                 html("<br/>");
672         }
673 }