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Date:: Fri Jan 24 20:43:51 2020 UTC
Message:: html escape diff output
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1 /*
2  * Copyright (c) 2019, 2020 Tracey Emery <tracey@traceyemery.net>
3  * Copyright (c) 2018, 2019 Stefan Sperling <stsp@openbsd.org>
4  *
5  * Permission to use, copy, modify, and distribute this software for any
6  * purpose with or without fee is hereby granted, provided that the above
7  * copyright notice and this permission notice appear in all copies.
8  *
9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16  */
17 
18 #include <sys/queue.h>
19 #include <sys/stat.h>
20 #include <sys/types.h>
21 
22 #include <dirent.h>
23 #include <err.h>
24 #include <regex.h>
25 #include <stdarg.h>
26 #include <stdbool.h>
27 #include <stdint.h>
28 #include <stdio.h>
29 #include <stdlib.h>
30 #include <string.h>
31 #include <unistd.h>
32 
33 #include <got_object.h>
34 #include <got_reference.h>
35 #include <got_repository.h>
36 #include <got_path.h>
37 #include <got_cancel.h>
38 #include <got_worktree.h>
39 #include <got_diff.h>
40 #include <got_commit_graph.h>
41 #include <got_blame.h>
42 #include <got_privsep.h>
43 #include <got_opentemp.h>
44 
45 #include <kcgi.h>
46 #include <kcgihtml.h>
47 
48 #include "buf.h"
49 #include "gotweb.h"
50 #include "gotweb_ui.h"
51 
52 #ifndef nitems
53 #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
54 #endif
55 
56 struct gw_trans {
57 	TAILQ_HEAD(headers, gw_header)	 gw_headers;
58 	TAILQ_HEAD(dirs, gw_dir)	 gw_dirs;
59 	struct gw_dir		*gw_dir;
60 	struct gotweb_conf	*gw_conf;
61 	struct ktemplate	*gw_tmpl;
62 	struct khtmlreq		*gw_html_req;
63 	struct kreq		*gw_req;
64 	char			*repo_name;
65 	char			*repo_path;
66 	char			*commit;
67 	char			*repo_file;
68 	char			*repo_folder;
69 	char			*action_name;
70 	char			*headref;
71 	unsigned int		 action;
72 	unsigned int		 page;
73 	unsigned int		 repos_total;
74 	enum kmime		 mime;
75 };
76 
77 struct gw_header {
78 	TAILQ_ENTRY(gw_header)		 entry;
79 	struct got_repository		*repo;
80 	struct got_reflist_head		 refs;
81 	struct got_commit_object	*commit;
82 	struct got_object_id		*id;
83 	char				*path;
84 
85 	char			*refs_str;
86 	char			*commit_id; /* id_str1 */
87 	char			*parent_id; /* id_str2 */
88 	char			*tree_id;
89 	char			*author;
90 	char			*committer;
91 	char			*commit_msg;
92 	time_t			 committer_time;
93 };
94 
95 struct gw_dir {
96 	TAILQ_ENTRY(gw_dir)	 entry;
97 	char			*name;
98 	char			*owner;
99 	char			*description;
100 	char			*url;
101 	char			*age;
102 	char			*path;
103 };
104 
105 enum gw_key {
106 	KEY_ACTION,
107 	KEY_COMMIT_ID,
108 	KEY_FILE,
109 	KEY_FOLDER,
110 	KEY_HEADREF,
111 	KEY_PAGE,
112 	KEY_PATH,
113 	KEY__ZMAX
114 };
115 
116 enum gw_tmpl {
117 	TEMPL_CONTENT,
118 	TEMPL_HEAD,
119 	TEMPL_HEADER,
120 	TEMPL_SEARCH,
121 	TEMPL_SITEPATH,
122 	TEMPL_SITEOWNER,
123 	TEMPL_TITLE,
124 	TEMPL__MAX
125 };
126 
127 enum gw_ref_tm {
128 	TM_DIFF,
129 	TM_LONG,
130 };
131 
132 enum gw_tags {
133 	TAGBRIEF,
134 	TAGFULL,
135 };
136 
137 static const char *const gw_templs[TEMPL__MAX] = {
138 	"content",
139 	"head",
140 	"header",
141 	"search",
142 	"sitepath",
143 	"siteowner",
144 	"title",
145 };
146 
147 static const struct kvalid gw_keys[KEY__ZMAX] = {
148 	{ kvalid_stringne,	"action" },
149 	{ kvalid_stringne,	"commit" },
150 	{ kvalid_stringne,	"file" },
151 	{ kvalid_stringne,	"folder" },
152 	{ kvalid_stringne,	"headref" },
153 	{ kvalid_int,		"page" },
154 	{ kvalid_stringne,	"path" },
155 };
156 
157 static struct gw_dir		*gw_init_gw_dir(char *);
158 static struct gw_header		*gw_init_header(void);
159 
160 static char			*gw_get_repo_description(struct gw_trans *,
161 				    char *);
162 static char			*gw_get_repo_owner(struct gw_trans *,
163 				    char *);
164 static char			*gw_get_time_str(time_t, int);
165 static char			*gw_get_repo_age(struct gw_trans *,
166 				    char *, char *, int);
167 static char			*gw_get_file_blame(struct gw_trans *);
168 static char			*gw_get_repo_tree(struct gw_trans *);
169 static char			*gw_get_diff(struct gw_trans *,
170 				    struct gw_header *);
171 static char			*gw_get_repo_tags(struct gw_trans *, int, int);
172 static char			*gw_get_repo_heads(struct gw_trans *);
173 static char			*gw_get_clone_url(struct gw_trans *, char *);
174 static char			*gw_get_got_link(struct gw_trans *);
175 static char			*gw_get_site_link(struct gw_trans *);
176 static char			*gw_html_escape(const char *);
177 static char			*gw_colordiff_line(char *);
178 
179 static char			*gw_gen_commit_header(char *, char*);
180 static char			*gw_gen_diff_header(char *, char*);
181 static char			*gw_gen_author_header(char *);
182 static char			*gw_gen_committer_header(char *);
183 static char			*gw_gen_age_header(char *);
184 static char			*gw_gen_commit_msg_header(char *);
185 static char			*gw_gen_tree_header(char *);
186 
187 static void			 gw_free_headers(struct gw_header *);
188 static void			 gw_display_open(struct gw_trans *, enum khttp,
189 				    enum kmime);
190 static void			 gw_display_index(struct gw_trans *,
191 				    const struct got_error *);
192 
193 static int			 gw_template(size_t, void *);
194 
195 static const struct got_error*	 gw_get_header(struct gw_trans *,
196 				    struct gw_header *, int);
197 static const struct got_error*	 gw_get_commits(struct gw_trans *,
198 				    struct gw_header *, int);
199 static const struct got_error*	 gw_get_commit(struct gw_trans *,
200 				    struct gw_header *);
201 static const struct got_error*	 gw_apply_unveil(const char *, const char *);
202 static const struct got_error*	 gw_blame_cb(void *, int, int,
203 				    struct got_object_id *);
204 static const struct got_error*	 gw_load_got_paths(struct gw_trans *);
205 static const struct got_error*	 gw_load_got_path(struct gw_trans *,
206 				    struct gw_dir *);
207 static const struct got_error*	 gw_parse_querystring(struct gw_trans *);
208 
209 static const struct got_error*	 gw_blame(struct gw_trans *);
210 static const struct got_error*	 gw_diff(struct gw_trans *);
211 static const struct got_error*	 gw_index(struct gw_trans *);
212 static const struct got_error*	 gw_commits(struct gw_trans *);
213 static const struct got_error*	 gw_briefs(struct gw_trans *);
214 static const struct got_error*	 gw_summary(struct gw_trans *);
215 static const struct got_error*	 gw_tree(struct gw_trans *);
216 
217 struct gw_query_action {
218 	unsigned int		 func_id;
219 	const char		*func_name;
220 	const struct got_error	*(*func_main)(struct gw_trans *);
221 	char			*template;
222 };
223 
224 enum gw_query_actions {
225 	GW_BLAME,
226 	GW_BRIEFS,
227 	GW_COMMITS,
228 	GW_DIFF,
229 	GW_ERR,
230 	GW_INDEX,
231 	GW_SUMMARY,
232 	GW_TREE,
233 };
234 
235 static struct gw_query_action gw_query_funcs[] = {
236 	{ GW_BLAME,	"blame",	gw_blame,	"gw_tmpl/blame.tmpl" },
237 	{ GW_BRIEFS,	"briefs",	gw_briefs,	"gw_tmpl/briefs.tmpl" },
238 	{ GW_COMMITS,	"commits",	gw_commits,	"gw_tmpl/commit.tmpl" },
239 	{ GW_DIFF,	"diff",		gw_diff,	"gw_tmpl/diff.tmpl" },
240 	{ GW_ERR,	 NULL,		NULL,		"gw_tmpl/err.tmpl" },
241 	{ GW_INDEX,	"index",	gw_index,	"gw_tmpl/index.tmpl" },
242 	{ GW_SUMMARY,	"summary",	gw_summary,	"gw_tmpl/summry.tmpl" },
243 	{ GW_TREE,	"tree",		gw_tree,	"gw_tmpl/tree.tmpl" },
244 };
245 
246 static const struct got_error *
247 gw_apply_unveil(const char *repo_path, const char *repo_file)
248 {
249 	const struct got_error *err;
250 
251 	if (repo_path && repo_file) {
252 		char *full_path;
253 		if ((asprintf(&full_path, "%s/%s", repo_path, repo_file)) == -1)
254 			return got_error_from_errno("asprintf unveil");
255 		if (unveil(full_path, "r") != 0)
256 			return got_error_from_errno2("unveil", full_path);
257 	}
258 
259 	if (repo_path && unveil(repo_path, "r") != 0)
260 		return got_error_from_errno2("unveil", repo_path);
261 
262 	if (unveil("/tmp", "rwc") != 0)
263 		return got_error_from_errno2("unveil", "/tmp");
264 
265 	err = got_privsep_unveil_exec_helpers();
266 	if (err != NULL)
267 		return err;
268 
269 	if (unveil(NULL, NULL) != 0)
270 		return got_error_from_errno("unveil");
271 
272 	return NULL;
273 }
274 
275 static const struct got_error *
276 gw_blame(struct gw_trans *gw_trans)
277 {
278 	const struct got_error *error = NULL;
279 	struct gw_header *header = NULL;
280 	char *blame = NULL, *blame_html = NULL, *blame_html_disp = NULL;
281 
282 	if (pledge("stdio rpath wpath cpath proc exec sendfd unveil",
283 	    NULL) == -1)
284 		return got_error_from_errno("pledge");
285 
286 	if ((header = gw_init_header()) == NULL)
287 		return got_error_from_errno("malloc");
288 
289 	error = gw_apply_unveil(gw_trans->gw_dir->path, NULL);
290 	if (error)
291 		return error;
292 
293 	error = gw_get_header(gw_trans, header, 1);
294 	if (error)
295 		return error;
296 
297 	blame_html = gw_get_file_blame(gw_trans);
298 
299 	if (blame_html == NULL)
300 		blame_html = strdup("");
301 
302 	if ((asprintf(&blame_html_disp, blame_header,
303 	    gw_gen_age_header(gw_get_time_str(header->committer_time, TM_LONG)),
304 	    gw_gen_commit_msg_header(gw_html_escape(header->commit_msg)),
305 	    blame_html)) == -1)
306 		return got_error_from_errno("asprintf");
307 
308 	if ((asprintf(&blame, blame_wrapper, blame_html_disp)) == -1)
309 		return got_error_from_errno("asprintf");
310 
311 	khttp_puts(gw_trans->gw_req, blame);
312 	got_ref_list_free(&header->refs);
313 	gw_free_headers(header);
314 	free(blame_html_disp);
315 	free(blame_html);
316 	free(blame);
317 	return error;
318 }
319 
320 static const struct got_error *
321 gw_diff(struct gw_trans *gw_trans)
322 {
323 	const struct got_error *error = NULL;
324 	struct gw_header *header = NULL;
325 	char *diff = NULL, *diff_html = NULL, *diff_html_disp = NULL;
326 
327 	if (pledge("stdio rpath wpath cpath proc exec sendfd unveil",
328 	    NULL) == -1)
329 		return got_error_from_errno("pledge");
330 
331 	if ((header = malloc(sizeof(struct gw_header))) == NULL)
332 		return got_error_from_errno("malloc");
333 
334 	error = gw_apply_unveil(gw_trans->gw_dir->path, NULL);
335 	if (error)
336 		return error;
337 
338 	error = gw_get_header(gw_trans, header, 1);
339 	if (error)
340 		return error;
341 
342 	diff_html = gw_get_diff(gw_trans, header);
343 
344 	if (diff_html == NULL)
345 		diff_html = strdup("");
346 
347 	if ((asprintf(&diff_html_disp, diff_header,
348 	    gw_gen_diff_header(header->parent_id, header->commit_id),
349 	    gw_gen_commit_header(header->commit_id, header->refs_str),
350 	    gw_gen_tree_header(header->tree_id),
351 	    gw_gen_author_header(header->author),
352 	    gw_gen_committer_header(header->committer),
353 	    gw_gen_age_header(gw_get_time_str(header->committer_time, TM_LONG)),
354 	    gw_gen_commit_msg_header(gw_html_escape(header->commit_msg)),
355 	    diff_html)) == -1)
356 		return got_error_from_errno("asprintf");
357 
358 	if ((asprintf(&diff, diff_wrapper, diff_html_disp)) == -1)
359 		return got_error_from_errno("asprintf");
360 
361 	khttp_puts(gw_trans->gw_req, diff);
362 	got_ref_list_free(&header->refs);
363 	gw_free_headers(header);
364 	free(diff_html_disp);
365 	free(diff_html);
366 	free(diff);
367 	return error;
368 }
369 
370 static const struct got_error *
371 gw_index(struct gw_trans *gw_trans)
372 {
373 	const struct got_error *error = NULL;
374 	struct gw_dir *gw_dir = NULL;
375 	char *html, *navs, *next, *prev;
376 	unsigned int prev_disp = 0, next_disp = 1, dir_c = 0;
377 
378 	if (pledge("stdio rpath proc exec sendfd unveil",
379 	    NULL) == -1) {
380 		error = got_error_from_errno("pledge");
381 		return error;
382 	}
383 
384 	error = gw_apply_unveil(gw_trans->gw_conf->got_repos_path, NULL);
385 	if (error)
386 		return error;
387 
388 	error = gw_load_got_paths(gw_trans);
389 	if (error)
390 		return error;
391 
392 	khttp_puts(gw_trans->gw_req, index_projects_header);
393 
394 	TAILQ_FOREACH(gw_dir, &gw_trans->gw_dirs, entry)
395 		dir_c++;
396 
397 	TAILQ_FOREACH(gw_dir, &gw_trans->gw_dirs, entry) {
398 		if (gw_trans->page > 0 && (gw_trans->page *
399 		    gw_trans->gw_conf->got_max_repos_display) > prev_disp) {
400 			prev_disp++;
401 			continue;
402 		}
403 
404 		prev_disp++;
405 
406 		if (error)
407 			return error;
408 		if((asprintf(&navs, index_navs, gw_dir->name, gw_dir->name,
409 		    gw_dir->name, gw_dir->name)) == -1)
410 			return got_error_from_errno("asprintf");
411 
412 		if ((asprintf(&html, index_projects, gw_dir->name, gw_dir->name,
413 		    gw_dir->description, gw_dir->owner, gw_dir->age,
414 		    navs)) == -1)
415 			return got_error_from_errno("asprintf");
416 
417 		khttp_puts(gw_trans->gw_req, html);
418 
419 		free(navs);
420 		free(html);
421 
422 		if (gw_trans->gw_conf->got_max_repos_display == 0)
423 			continue;
424 
425 		if (next_disp == gw_trans->gw_conf->got_max_repos_display)
426 			khttp_puts(gw_trans->gw_req, np_wrapper_start);
427 		else if ((gw_trans->gw_conf->got_max_repos_display > 0) &&
428 		    (gw_trans->page > 0) &&
429 		    (next_disp == gw_trans->gw_conf->got_max_repos_display ||
430 		    prev_disp == gw_trans->repos_total))
431 			khttp_puts(gw_trans->gw_req, np_wrapper_start);
432 
433 		if ((gw_trans->gw_conf->got_max_repos_display > 0) &&
434 		    (gw_trans->page > 0) &&
435 		    (next_disp == gw_trans->gw_conf->got_max_repos_display ||
436 		    prev_disp == gw_trans->repos_total)) {
437 			if ((asprintf(&prev, nav_prev,
438 			    gw_trans->page - 1)) == -1)
439 				return got_error_from_errno("asprintf");
440 			khttp_puts(gw_trans->gw_req, prev);
441 			free(prev);
442 		}
443 
444 		khttp_puts(gw_trans->gw_req, div_end);
445 
446 		if (gw_trans->gw_conf->got_max_repos_display > 0 &&
447 		    next_disp == gw_trans->gw_conf->got_max_repos_display &&
448 		    dir_c != (gw_trans->page + 1) *
449 		    gw_trans->gw_conf->got_max_repos_display) {
450 			if ((asprintf(&next, nav_next,
451 			    gw_trans->page + 1)) == -1)
452 				return got_error_from_errno("calloc");
453 			khttp_puts(gw_trans->gw_req, next);
454 			khttp_puts(gw_trans->gw_req, div_end);
455 			free(next);
456 			next_disp = 0;
457 			break;
458 		}
459 
460 		if ((gw_trans->gw_conf->got_max_repos_display > 0) &&
461 		    (gw_trans->page > 0) &&
462 		    (next_disp == gw_trans->gw_conf->got_max_repos_display ||
463 		    prev_disp == gw_trans->repos_total))
464 			khttp_puts(gw_trans->gw_req, div_end);
465 
466 		next_disp++;
467 	}
468 	return error;
469 }
470 
471 static const struct got_error *
472 gw_commits(struct gw_trans *gw_trans)
473 {
474 	const struct got_error *error = NULL;
475 	char *commits_html, *commits_navs_html;
476 	struct gw_header *header = NULL, *n_header = NULL;
477 
478 	if ((header = malloc(sizeof(struct gw_header))) == NULL)
479 		return got_error_from_errno("malloc");
480 
481 	if (pledge("stdio rpath proc exec sendfd unveil",
482 	    NULL) == -1) {
483 		error = got_error_from_errno("pledge");
484 		return error;
485 	}
486 
487 	error = gw_apply_unveil(gw_trans->gw_dir->path, NULL);
488 	if (error)
489 		return error;
490 
491 	error = gw_get_header(gw_trans, header,
492 	    gw_trans->gw_conf->got_max_commits_display);
493 
494 	khttp_puts(gw_trans->gw_req, commits_wrapper);
495 	TAILQ_FOREACH(n_header, &gw_trans->gw_headers, entry) {
496 		if ((asprintf(&commits_navs_html, commits_navs,
497 		    gw_trans->repo_name, n_header->commit_id,
498 		    gw_trans->repo_name, n_header->commit_id,
499 		    gw_trans->repo_name, n_header->commit_id)) == -1)
500 			return got_error_from_errno("asprintf");
501 
502 		if ((asprintf(&commits_html, commits_line,
503 	    	    gw_gen_commit_header(n_header->commit_id,
504 		        n_header->refs_str),
505 	    	    gw_gen_author_header(n_header->author),
506 	    	    gw_gen_committer_header(n_header->committer),
507 		    gw_gen_age_header(gw_get_time_str(n_header->committer_time,
508 		        TM_LONG)), gw_html_escape(n_header->commit_msg),
509 		    commits_navs_html)) == -1)
510 			return got_error_from_errno("asprintf");
511 		khttp_puts(gw_trans->gw_req, commits_html);
512 	}
513 	khttp_puts(gw_trans->gw_req, div_end);
514 
515 	got_ref_list_free(&header->refs);
516 	gw_free_headers(header);
517 	TAILQ_FOREACH(n_header, &gw_trans->gw_headers, entry)
518 		gw_free_headers(n_header);
519 	return error;
520 }
521 
522 static const struct got_error *
523 gw_briefs(struct gw_trans *gw_trans)
524 {
525 	const struct got_error *error = NULL;
526 	char *briefs_html = NULL, *briefs_navs_html = NULL, *newline;
527 	struct gw_header *header = NULL, *n_header = NULL;
528 
529 	if ((header = malloc(sizeof(struct gw_header))) == NULL)
530 		return got_error_from_errno("malloc");
531 
532 	if (pledge("stdio rpath proc exec sendfd unveil",
533 	    NULL) == -1) {
534 		error = got_error_from_errno("pledge");
535 		return error;
536 	}
537 
538 	error = gw_apply_unveil(gw_trans->gw_dir->path, NULL);
539 	if (error)
540 		return error;
541 
542 	if (gw_trans->action == GW_SUMMARY)
543 		error = gw_get_header(gw_trans, header, D_MAXSLCOMMDISP);
544 	else
545 		error = gw_get_header(gw_trans, header,
546 		    gw_trans->gw_conf->got_max_commits_display);
547 
548 	khttp_puts(gw_trans->gw_req, briefs_wrapper);
549 	TAILQ_FOREACH(n_header, &gw_trans->gw_headers, entry) {
550 		if ((asprintf(&briefs_navs_html, briefs_navs,
551 		    gw_trans->repo_name, n_header->commit_id,
552 		    gw_trans->repo_name, n_header->commit_id,
553 		    gw_trans->repo_name, n_header->commit_id)) == -1)
554 			return got_error_from_errno("asprintf");
555 		newline = strchr(n_header->commit_msg, '\n');
556 		if (newline)
557 			*newline = '\0';
558 		if ((asprintf(&briefs_html, briefs_line,
559 		    gw_get_time_str(n_header->committer_time, TM_DIFF),
560 		    n_header->author, gw_html_escape(n_header->commit_msg),
561 		    briefs_navs_html)) == -1)
562 			return got_error_from_errno("asprintf");
563 		khttp_puts(gw_trans->gw_req, briefs_html);
564 	}
565 	khttp_puts(gw_trans->gw_req, div_end);
566 
567 	got_ref_list_free(&header->refs);
568 	gw_free_headers(header);
569 	TAILQ_FOREACH(n_header, &gw_trans->gw_headers, entry)
570 		gw_free_headers(n_header);
571 	return error;
572 }
573 
574 static const struct got_error *
575 gw_summary(struct gw_trans *gw_trans)
576 {
577 	const struct got_error *error = NULL;
578 	char *description_html, *repo_owner_html, *repo_age_html,
579 	     *cloneurl_html, *tags, *heads, *tags_html,
580 	     *heads_html, *age;
581 
582 	if (pledge("stdio rpath proc exec sendfd unveil",
583 	    NULL) == -1) {
584 		error = got_error_from_errno("pledge");
585 		return error;
586 	}
587 
588 	/* unveil is applied with gw_briefs below */
589 
590 	khttp_puts(gw_trans->gw_req, summary_wrapper);
591 	if (gw_trans->gw_conf->got_show_repo_description) {
592 		if (gw_trans->gw_dir->description != NULL &&
593 		    (strcmp(gw_trans->gw_dir->description, "") != 0)) {
594 			if ((asprintf(&description_html, description,
595 			    gw_trans->gw_dir->description)) == -1)
596 				return got_error_from_errno("asprintf");
597 
598 			khttp_puts(gw_trans->gw_req, description_html);
599 			free(description_html);
600 		}
601 	}
602 
603 	if (gw_trans->gw_conf->got_show_repo_owner) {
604 		if (gw_trans->gw_dir->owner != NULL &&
605 		    (strcmp(gw_trans->gw_dir->owner, "") != 0)) {
606 			if ((asprintf(&repo_owner_html, repo_owner,
607 			    gw_trans->gw_dir->owner)) == -1)
608 				return got_error_from_errno("asprintf");
609 
610 			khttp_puts(gw_trans->gw_req, repo_owner_html);
611 			free(repo_owner_html);
612 		}
613 	}
614 
615 	if (gw_trans->gw_conf->got_show_repo_age) {
616 		age = gw_get_repo_age(gw_trans, gw_trans->gw_dir->path,
617 		    "refs/heads", TM_LONG);
618 		if (age != NULL && (strcmp(age, "") != 0)) {
619 			if ((asprintf(&repo_age_html, last_change, age)) == -1)
620 				return got_error_from_errno("asprintf");
621 
622 			khttp_puts(gw_trans->gw_req, repo_age_html);
623 			free(repo_age_html);
624 			free(age);
625 		}
626 	}
627 
628 	if (gw_trans->gw_conf->got_show_repo_cloneurl) {
629 		if (gw_trans->gw_dir->url != NULL &&
630 		    (strcmp(gw_trans->gw_dir->url, "") != 0)) {
631 			if ((asprintf(&cloneurl_html, cloneurl,
632 			    gw_trans->gw_dir->url)) == -1)
633 				return got_error_from_errno("asprintf");
634 
635 			khttp_puts(gw_trans->gw_req, cloneurl_html);
636 			free(cloneurl_html);
637 		}
638 	}
639 	khttp_puts(gw_trans->gw_req, div_end);
640 
641 	error = gw_briefs(gw_trans);
642 	if (error)
643 		return error;
644 
645 	tags = gw_get_repo_tags(gw_trans, D_MAXSLCOMMDISP, TAGBRIEF);
646 	heads = gw_get_repo_heads(gw_trans);
647 
648 	if (tags != NULL && strcmp(tags, "") != 0) {
649 		if ((asprintf(&tags_html, summary_tags,
650 		    tags)) == -1)
651 			return got_error_from_errno("asprintf");
652 		khttp_puts(gw_trans->gw_req, tags_html);
653 		free(tags_html);
654 		free(tags);
655 	}
656 
657 	if (heads != NULL && strcmp(heads, "") != 0) {
658 		if ((asprintf(&heads_html, summary_heads,
659 		    heads)) == -1)
660 			return got_error_from_errno("asprintf");
661 		khttp_puts(gw_trans->gw_req, heads_html);
662 		free(heads_html);
663 		free(heads);
664 	}
665 	return error;
666 }
667 
668 static const struct got_error *
669 gw_tree(struct gw_trans *gw_trans)
670 {
671 	const struct got_error *error = NULL;
672 	struct gw_header *header = NULL;
673 	char *tree = NULL, *tree_html = NULL, *tree_html_disp = NULL;
674 
675 	if (pledge("stdio rpath proc exec sendfd unveil", NULL) == -1)
676 		return got_error_from_errno("pledge");
677 
678 	if ((header = malloc(sizeof(struct gw_header))) == NULL)
679 		return got_error_from_errno("malloc");
680 
681 	error = gw_apply_unveil(gw_trans->gw_dir->path, NULL);
682 	if (error)
683 		return error;
684 
685 	error = gw_get_header(gw_trans, header, 1);
686 	if (error)
687 		return error;
688 
689 	tree_html = gw_get_repo_tree(gw_trans);
690 
691 	if (tree_html == NULL)
692 		tree_html = strdup("");
693 
694 	if ((asprintf(&tree_html_disp, tree_header,
695 	    gw_gen_age_header(gw_get_time_str(header->committer_time, TM_LONG)),
696 	    gw_gen_commit_msg_header(gw_html_escape(header->commit_msg)),
697 	    tree_html)) == -1)
698 		return got_error_from_errno("asprintf");
699 
700 	if ((asprintf(&tree, tree_wrapper, tree_html_disp)) == -1)
701 		return got_error_from_errno("asprintf");
702 
703 	khttp_puts(gw_trans->gw_req, tree);
704 	got_ref_list_free(&header->refs);
705 	gw_free_headers(header);
706 	free(tree_html_disp);
707 	free(tree_html);
708 	free(tree);
709 	return error;
710 }
711 
712 static const struct got_error *
713 gw_load_got_path(struct gw_trans *gw_trans, struct gw_dir *gw_dir)
714 {
715 	const struct got_error *error = NULL;
716 	DIR *dt;
717 	char *dir_test;
718 	int opened = 0;
719 
720 	if ((asprintf(&dir_test, "%s/%s/%s",
721 	    gw_trans->gw_conf->got_repos_path, gw_dir->name,
722 	    GOTWEB_GIT_DIR)) == -1)
723 		return got_error_from_errno("asprintf");
724 
725 	dt = opendir(dir_test);
726 	if (dt == NULL) {
727 		free(dir_test);
728 	} else {
729 		gw_dir->path = strdup(dir_test);
730 		opened = 1;
731 		goto done;
732 	}
733 
734 	if ((asprintf(&dir_test, "%s/%s/%s",
735 	    gw_trans->gw_conf->got_repos_path, gw_dir->name,
736 	    GOTWEB_GOT_DIR)) == -1)
737 		return got_error_from_errno("asprintf");
738 
739 	dt = opendir(dir_test);
740 	if (dt == NULL)
741 		free(dir_test);
742 	else {
743 		opened = 1;
744 		error = got_error(GOT_ERR_NOT_GIT_REPO);
745 		goto errored;
746 	}
747 
748 	if ((asprintf(&dir_test, "%s/%s",
749 	    gw_trans->gw_conf->got_repos_path, gw_dir->name)) == -1)
750 		return got_error_from_errno("asprintf");
751 
752 	gw_dir->path = strdup(dir_test);
753 
754 done:
755 	gw_dir->description = gw_get_repo_description(gw_trans,
756 	    gw_dir->path);
757 	gw_dir->owner = gw_get_repo_owner(gw_trans, gw_dir->path);
758 	gw_dir->age = gw_get_repo_age(gw_trans, gw_dir->path, "refs/heads",
759 	    TM_DIFF);
760 	gw_dir->url = gw_get_clone_url(gw_trans, gw_dir->path);
761 
762 errored:
763 	free(dir_test);
764 	if (opened)
765 		closedir(dt);
766 	return error;
767 }
768 
769 static const struct got_error *
770 gw_load_got_paths(struct gw_trans *gw_trans)
771 {
772 	const struct got_error *error = NULL;
773 	DIR *d;
774 	struct dirent **sd_dent;
775 	struct gw_dir *gw_dir;
776 	struct stat st;
777 	unsigned int d_cnt, d_i;
778 
779 	d = opendir(gw_trans->gw_conf->got_repos_path);
780 	if (d == NULL) {
781 		error = got_error_from_errno2("opendir",
782 		    gw_trans->gw_conf->got_repos_path);
783 		return error;
784 	}
785 
786 	d_cnt = scandir(gw_trans->gw_conf->got_repos_path, &sd_dent, NULL,
787 	    alphasort);
788 	if (d_cnt == -1) {
789 		error = got_error_from_errno2("scandir",
790 		    gw_trans->gw_conf->got_repos_path);
791 		return error;
792 	}
793 
794 	for (d_i = 0; d_i < d_cnt; d_i++) {
795 		if (gw_trans->gw_conf->got_max_repos > 0 &&
796 		    (d_i - 2) == gw_trans->gw_conf->got_max_repos)
797 			break; /* account for parent and self */
798 
799 		if (strcmp(sd_dent[d_i]->d_name, ".") == 0 ||
800 		    strcmp(sd_dent[d_i]->d_name, "..") == 0)
801 			continue;
802 
803 		if ((gw_dir = gw_init_gw_dir(sd_dent[d_i]->d_name)) == NULL)
804 			return got_error_from_errno("gw_dir malloc");
805 
806 		error = gw_load_got_path(gw_trans, gw_dir);
807 		if (error && error->code == GOT_ERR_NOT_GIT_REPO)
808 			continue;
809 		else if (error)
810 			return error;
811 
812 		if (lstat(gw_dir->path, &st) == 0 && S_ISDIR(st.st_mode) &&
813 		    !got_path_dir_is_empty(gw_dir->path)) {
814 			TAILQ_INSERT_TAIL(&gw_trans->gw_dirs, gw_dir,
815 			    entry);
816 			gw_trans->repos_total++;
817 		}
818 	}
819 
820 	closedir(d);
821 	return error;
822 }
823 
824 static const struct got_error *
825 gw_parse_querystring(struct gw_trans *gw_trans)
826 {
827 	const struct got_error *error = NULL;
828 	struct kpair *p;
829 	struct gw_query_action *action = NULL;
830 	unsigned int i;
831 
832 	if (gw_trans->gw_req->fieldnmap[0]) {
833 		error = got_error_from_errno("bad parse");
834 		return error;
835 	} else if ((p = gw_trans->gw_req->fieldmap[KEY_PATH])) {
836 		/* define gw_trans->repo_path */
837 		if ((asprintf(&gw_trans->repo_name, "%s", p->parsed.s)) == -1)
838 			return got_error_from_errno("asprintf");
839 
840 		if ((asprintf(&gw_trans->repo_path, "%s/%s",
841 		    gw_trans->gw_conf->got_repos_path, p->parsed.s)) == -1)
842 			return got_error_from_errno("asprintf");
843 
844 		/* get action and set function */
845 		if ((p = gw_trans->gw_req->fieldmap[KEY_ACTION]))
846 			for (i = 0; i < nitems(gw_query_funcs); i++) {
847 				action = &gw_query_funcs[i];
848 				if (action->func_name == NULL)
849 					continue;
850 
851 				if (strcmp(action->func_name,
852 				    p->parsed.s) == 0) {
853 					gw_trans->action = i;
854 					if ((asprintf(&gw_trans->action_name,
855 					    "%s", action->func_name)) == -1)
856 						return
857 						    got_error_from_errno(
858 						    "asprintf");
859 
860 					break;
861 				}
862 
863 				action = NULL;
864 			}
865 
866  		if ((p = gw_trans->gw_req->fieldmap[KEY_COMMIT_ID]))
867 			if ((asprintf(&gw_trans->commit, "%s",
868 			    p->parsed.s)) == -1)
869 				return got_error_from_errno("asprintf");
870 
871 		if ((p = gw_trans->gw_req->fieldmap[KEY_FILE]))
872 			if ((asprintf(&gw_trans->repo_file, "%s",
873 			    p->parsed.s)) == -1)
874 				return got_error_from_errno("asprintf");
875 
876 		if ((p = gw_trans->gw_req->fieldmap[KEY_FOLDER]))
877 			if ((asprintf(&gw_trans->repo_folder, "%s",
878 			    p->parsed.s)) == -1)
879 				return got_error_from_errno("asprintf");
880 
881 		if ((p = gw_trans->gw_req->fieldmap[KEY_HEADREF]))
882 			if ((asprintf(&gw_trans->headref, "%s",
883 			    p->parsed.s)) == -1)
884 				return got_error_from_errno("asprintf");
885 
886 		if (action == NULL) {
887 			error = got_error_from_errno("invalid action");
888 			return error;
889 		}
890 		if ((gw_trans->gw_dir =
891 		    gw_init_gw_dir(gw_trans->repo_name)) == NULL)
892 			return got_error_from_errno("gw_dir malloc");
893 
894 		error = gw_load_got_path(gw_trans, gw_trans->gw_dir);
895 		if (error)
896 			return error;
897 	} else
898 		gw_trans->action = GW_INDEX;
899 
900 	if ((p = gw_trans->gw_req->fieldmap[KEY_PAGE]))
901 		gw_trans->page = p->parsed.i;
902 
903 	/* if (gw_trans->action == GW_RAW) */
904 	/* 	gw_trans->mime = KMIME_TEXT_PLAIN; */
905 
906 	return error;
907 }
908 
909 static struct gw_dir *
910 gw_init_gw_dir(char *dir)
911 {
912 	struct gw_dir *gw_dir;
913 
914 	if ((gw_dir = malloc(sizeof(*gw_dir))) == NULL)
915 		return NULL;
916 
917 	if ((asprintf(&gw_dir->name, "%s", dir)) == -1)
918 		return NULL;
919 
920 	return gw_dir;
921 }
922 
923 static void
924 gw_display_open(struct gw_trans *gw_trans, enum khttp code, enum kmime mime)
925 {
926 	khttp_head(gw_trans->gw_req, kresps[KRESP_ALLOW], "GET");
927 	khttp_head(gw_trans->gw_req, kresps[KRESP_STATUS], "%s",
928 	    khttps[code]);
929 	khttp_head(gw_trans->gw_req, kresps[KRESP_CONTENT_TYPE], "%s",
930 	    kmimetypes[mime]);
931 	khttp_head(gw_trans->gw_req, "X-Content-Type-Options", "nosniff");
932 	khttp_head(gw_trans->gw_req, "X-Frame-Options", "DENY");
933 	khttp_head(gw_trans->gw_req, "X-XSS-Protection", "1; mode=block");
934 	khttp_body(gw_trans->gw_req);
935 }
936 
937 static void
938 gw_display_index(struct gw_trans *gw_trans, const struct got_error *err)
939 {
940 	gw_display_open(gw_trans, KHTTP_200, gw_trans->mime);
941 	khtml_open(gw_trans->gw_html_req, gw_trans->gw_req, 0);
942 
943 	if (err)
944 		khttp_puts(gw_trans->gw_req, err->msg);
945 	else
946 		khttp_template(gw_trans->gw_req, gw_trans->gw_tmpl,
947 		    gw_query_funcs[gw_trans->action].template);
948 
949 	khtml_close(gw_trans->gw_html_req);
950 }
951 
952 static int
953 gw_template(size_t key, void *arg)
954 {
955 	const struct got_error *error = NULL;
956 	struct gw_trans *gw_trans = arg;
957 	char *gw_got_link, *gw_site_link;
958 	char *site_owner_name, *site_owner_name_h;
959 
960 	switch (key) {
961 	case (TEMPL_HEAD):
962 		khttp_puts(gw_trans->gw_req, head);
963 		break;
964 	case(TEMPL_HEADER):
965 		gw_got_link = gw_get_got_link(gw_trans);
966 		if (gw_got_link != NULL)
967 			khttp_puts(gw_trans->gw_req, gw_got_link);
968 
969 		free(gw_got_link);
970 		break;
971 	case (TEMPL_SITEPATH):
972 		gw_site_link = gw_get_site_link(gw_trans);
973 		if (gw_site_link != NULL)
974 			khttp_puts(gw_trans->gw_req, gw_site_link);
975 
976 		free(gw_site_link);
977 		break;
978 	case(TEMPL_TITLE):
979 		if (gw_trans->gw_conf->got_site_name != NULL)
980 			khtml_puts(gw_trans->gw_html_req,
981 			    gw_trans->gw_conf->got_site_name);
982 
983 		break;
984 	case (TEMPL_SEARCH):
985 		khttp_puts(gw_trans->gw_req, search);
986 		break;
987 	case(TEMPL_SITEOWNER):
988 		if (gw_trans->gw_conf->got_site_owner != NULL &&
989 		    gw_trans->gw_conf->got_show_site_owner) {
990 			site_owner_name =
991 			    gw_html_escape(gw_trans->gw_conf->got_site_owner);
992 			if ((asprintf(&site_owner_name_h, site_owner,
993 			    site_owner_name))
994 			    == -1)
995 				return 0;
996 
997 			khttp_puts(gw_trans->gw_req, site_owner_name_h);
998 			free(site_owner_name);
999 			free(site_owner_name_h);
1000 		}
1001 		break;
1002 	case(TEMPL_CONTENT):
1003 		error = gw_query_funcs[gw_trans->action].func_main(gw_trans);
1004 		if (error)
1005 			khttp_puts(gw_trans->gw_req, error->msg);
1006 
1007 		break;
1008 	default:
1009 		return 0;
1010 		break;
1011 	}
1012 	return 1;
1013 }
1014 
1015 static char *
1016 gw_gen_commit_header(char *str1, char *str2)
1017 {
1018 	char *return_html = NULL, *ref_str = NULL;
1019 
1020 	if (strcmp(str2, "") != 0) {
1021 		if ((asprintf(&ref_str, "(%s)", str2)) == -1) {
1022 			return_html = strdup("");
1023 			return return_html;
1024 		}
1025 	} else
1026 		ref_str = strdup("");
1027 
1028 
1029 	if ((asprintf(&return_html, header_commit_html, str1, ref_str)) == -1)
1030 		return_html = strdup("");
1031 
1032 	free(ref_str);
1033 	return return_html;
1034 }
1035 
1036 static char *
1037 gw_gen_diff_header(char *str1, char *str2)
1038 {
1039 	char *return_html = NULL;
1040 
1041 	if ((asprintf(&return_html, header_diff_html, str1, str2)) == -1)
1042 		return_html = strdup("");
1043 
1044 	return return_html;
1045 }
1046 
1047 static char *
1048 gw_gen_author_header(char *str)
1049 {
1050 	char *return_html = NULL;
1051 
1052 	if ((asprintf(&return_html, header_author_html, str)) == -1)
1053 		return_html = strdup("");
1054 
1055 	return return_html;
1056 }
1057 
1058 static char *
1059 gw_gen_committer_header(char *str)
1060 {
1061 	char *return_html = NULL;
1062 
1063 	if ((asprintf(&return_html, header_committer_html, str)) == -1)
1064 		return_html = strdup("");
1065 
1066 	return return_html;
1067 }
1068 
1069 static char *
1070 gw_gen_age_header(char *str)
1071 {
1072 	char *return_html = NULL;
1073 
1074 	if ((asprintf(&return_html, header_age_html, str)) == -1)
1075 		return_html = strdup("");
1076 
1077 	return return_html;
1078 }
1079 
1080 static char *
1081 gw_gen_commit_msg_header(char *str)
1082 {
1083 	char *return_html = NULL;
1084 
1085 	if ((asprintf(&return_html, header_commit_msg_html, str)) == -1)
1086 		return_html = strdup("");
1087 
1088 	return return_html;
1089 }
1090 
1091 static char *
1092 gw_gen_tree_header(char *str)
1093 {
1094 	char *return_html = NULL;
1095 
1096 	if ((asprintf(&return_html, header_tree_html, str)) == -1)
1097 		return_html = strdup("");
1098 
1099 	return return_html;
1100 }
1101 
1102 static char *
1103 gw_get_repo_description(struct gw_trans *gw_trans, char *dir)
1104 {
1105 	FILE *f;
1106 	char *description = NULL, *d_file = NULL;
1107 	unsigned int len;
1108 
1109 	if (gw_trans->gw_conf->got_show_repo_description == false)
1110 		goto err;
1111 
1112 	if ((asprintf(&d_file, "%s/description", dir)) == -1)
1113 		goto err;
1114 
1115 	if ((f = fopen(d_file, "r")) == NULL)
1116 		goto err;
1117 
1118 	fseek(f, 0, SEEK_END);
1119 	len = ftell(f) + 1;
1120 	fseek(f, 0, SEEK_SET);
1121 	if ((description = calloc(len, sizeof(char *))) == NULL)
1122 		goto err;
1123 
1124 	fread(description, 1, len, f);
1125 	fclose(f);
1126 	free(d_file);
1127 	return description;
1128 err:
1129 	if ((asprintf(&description, "%s", "")) == -1)
1130 		return NULL;
1131 
1132 	return description;
1133 }
1134 
1135 static char *
1136 gw_get_time_str(time_t committer_time, int ref_tm)
1137 {
1138 	struct tm tm;
1139 	time_t diff_time;
1140 	char *years = "years ago", *months = "months ago";
1141 	char *weeks = "weeks ago", *days = "days ago", *hours = "hours ago";
1142 	char *minutes = "minutes ago", *seconds = "seconds ago";
1143 	char *now = "right now";
1144 	char *repo_age, *s;
1145 	char datebuf[29];
1146 
1147 	switch (ref_tm) {
1148 	case TM_DIFF:
1149 		diff_time = time(NULL) - committer_time;
1150 		if (diff_time > 60 * 60 * 24 * 365 * 2) {
1151 			if ((asprintf(&repo_age, "%lld %s",
1152 			    (diff_time / 60 / 60 / 24 / 365), years)) == -1)
1153 				return NULL;
1154 		} else if (diff_time > 60 * 60 * 24 * (365 / 12) * 2) {
1155 			if ((asprintf(&repo_age, "%lld %s",
1156 			    (diff_time / 60 / 60 / 24 / (365 / 12)),
1157 			    months)) == -1)
1158 				return NULL;
1159 		} else if (diff_time > 60 * 60 * 24 * 7 * 2) {
1160 			if ((asprintf(&repo_age, "%lld %s",
1161 			    (diff_time / 60 / 60 / 24 / 7), weeks)) == -1)
1162 				return NULL;
1163 		} else if (diff_time > 60 * 60 * 24 * 2) {
1164 			if ((asprintf(&repo_age, "%lld %s",
1165 			    (diff_time / 60 / 60 / 24), days)) == -1)
1166 				return NULL;
1167 		} else if (diff_time > 60 * 60 * 2) {
1168 			if ((asprintf(&repo_age, "%lld %s",
1169 			    (diff_time / 60 / 60), hours)) == -1)
1170 				return NULL;
1171 		} else if (diff_time > 60 * 2) {
1172 			if ((asprintf(&repo_age, "%lld %s", (diff_time / 60),
1173 			    minutes)) == -1)
1174 				return NULL;
1175 		} else if (diff_time > 2) {
1176 			if ((asprintf(&repo_age, "%lld %s", diff_time,
1177 			    seconds)) == -1)
1178 				return NULL;
1179 		} else {
1180 			if ((asprintf(&repo_age, "%s", now)) == -1)
1181 				return NULL;
1182 		}
1183 		break;
1184 	case TM_LONG:
1185 		if (gmtime_r(&committer_time, &tm) == NULL)
1186 			return NULL;
1187 
1188 		s = asctime_r(&tm, datebuf);
1189 		if (s == NULL)
1190 			return NULL;
1191 
1192 		if ((asprintf(&repo_age, "%s UTC", datebuf)) == -1)
1193 			return NULL;
1194 		break;
1195 	}
1196 	return repo_age;
1197 }
1198 
1199 static char *
1200 gw_get_repo_age(struct gw_trans *gw_trans, char *dir, char *repo_ref,
1201     int ref_tm)
1202 {
1203 	const struct got_error *error = NULL;
1204 	struct got_object_id *id = NULL;
1205 	struct got_repository *repo = NULL;
1206 	struct got_commit_object *commit = NULL;
1207 	struct got_reflist_head refs;
1208 	struct got_reflist_entry *re;
1209 	struct got_reference *head_ref;
1210 	int is_head = 0;
1211 	time_t committer_time = 0, cmp_time = 0;
1212 	const char *refname;
1213 	char *repo_age = NULL;
1214 
1215 	if (repo_ref == NULL)
1216 		return NULL;
1217 
1218 	if (strncmp(repo_ref, "refs/heads/", 11) == 0)
1219 		is_head = 1;
1220 
1221 	SIMPLEQ_INIT(&refs);
1222 	if (gw_trans->gw_conf->got_show_repo_age == false) {
1223 		if ((asprintf(&repo_age, "")) == -1)
1224 			return NULL;
1225 		return repo_age;
1226 	}
1227 
1228 	error = got_repo_open(&repo, dir, NULL);
1229 	if (error)
1230 		goto err;
1231 
1232 	if (is_head)
1233 		error = got_ref_list(&refs, repo, "refs/heads",
1234 		    got_ref_cmp_by_name, NULL);
1235 	else
1236 		error = got_ref_list(&refs, repo, repo_ref,
1237 		    got_ref_cmp_by_name, NULL);
1238 	if (error)
1239 		goto err;
1240 
1241 	SIMPLEQ_FOREACH(re, &refs, entry) {
1242 		if (is_head)
1243 			refname = strdup(repo_ref);
1244 		else
1245 			refname = got_ref_get_name(re->ref);
1246 		error = got_ref_open(&head_ref, repo, refname, 0);
1247 		if (error)
1248 			goto err;
1249 
1250 		error = got_ref_resolve(&id, repo, head_ref);
1251 		got_ref_close(head_ref);
1252 		if (error)
1253 			goto err;
1254 
1255 		error = got_object_open_as_commit(&commit, repo, id);
1256 		if (error)
1257 			goto err;
1258 
1259 		committer_time =
1260 		    got_object_commit_get_committer_time(commit);
1261 
1262 		if (cmp_time < committer_time)
1263 			cmp_time = committer_time;
1264 	}
1265 
1266 	if (cmp_time != 0) {
1267 		committer_time = cmp_time;
1268 		repo_age = gw_get_time_str(committer_time, ref_tm);
1269 	} else
1270 		if ((asprintf(&repo_age, "")) == -1)
1271 			return NULL;
1272 	got_ref_list_free(&refs);
1273 	free(id);
1274 	return repo_age;
1275 err:
1276 	if ((asprintf(&repo_age, "%s", error->msg)) == -1)
1277 		return NULL;
1278 
1279 	return repo_age;
1280 }
1281 
1282 static char *
1283 gw_get_diff(struct gw_trans *gw_trans, struct gw_header *header)
1284 {
1285 	const struct got_error *error;
1286 	FILE *f = NULL;
1287 	struct got_object_id *id1 = NULL, *id2 = NULL;
1288 	struct buf *diffbuf = NULL;
1289 	char *label1 = NULL, *label2 = NULL, *diff_html = NULL, *buf = NULL,
1290 	     *buf_color = NULL, *n_buf = NULL, *newline = NULL;
1291 	int type1, type2;
1292 	size_t newsize;
1293 
1294 	f = got_opentemp();
1295 	if (f == NULL)
1296 		return NULL;
1297 
1298 	error = buf_alloc(&diffbuf, 0);
1299 	if (error)
1300 		return NULL;
1301 
1302 	error = got_repo_open(&header->repo, gw_trans->repo_path, NULL);
1303 	if (error)
1304 		goto done;
1305 
1306 	error = got_repo_match_object_id(&id1, &label1, header->parent_id,
1307 	    GOT_OBJ_TYPE_ANY, 1, header->repo);
1308 	if (error)
1309 		goto done;
1310 
1311 	error = got_repo_match_object_id(&id2, &label2,
1312 	    header->commit_id, GOT_OBJ_TYPE_ANY, 1, header->repo);
1313 	if (error)
1314 		goto done;
1315 
1316 	error = got_object_get_type(&type1, header->repo, id1);
1317 	if (error)
1318 		goto done;
1319 
1320 	error = got_object_get_type(&type2, header->repo, id2);
1321 	if (error)
1322 		goto done;
1323 
1324 	if (type1 != type2) {
1325 		error = got_error(GOT_ERR_OBJ_TYPE);
1326 		goto done;
1327 	}
1328 
1329 	switch (type1) {
1330 	case GOT_OBJ_TYPE_BLOB:
1331 		error = got_diff_objects_as_blobs(id1, id2, NULL, NULL, 3, 0,
1332 		    header->repo, f);
1333 		break;
1334 	case GOT_OBJ_TYPE_TREE:
1335 		error = got_diff_objects_as_trees(id1, id2, "", "", 3, 0,
1336 		    header->repo, f);
1337 		break;
1338 	case GOT_OBJ_TYPE_COMMIT:
1339 		error = got_diff_objects_as_commits(id1, id2, 3, 0,
1340 		    header->repo, f);
1341 		break;
1342 	default:
1343 		error = got_error(GOT_ERR_OBJ_TYPE);
1344 	}
1345 
1346 	if ((buf = calloc(128, sizeof(char *))) == NULL)
1347 		goto done;
1348 
1349 	fseek(f, 0, SEEK_SET);
1350 
1351 	while ((fgets(buf, 128, f)) != NULL) {
1352 		n_buf = buf;
1353 		while (*n_buf == '\n')
1354 			n_buf++;
1355 		newline = strchr(n_buf, '\n');
1356 		if (newline)
1357 			*newline = ' ';
1358 
1359 		buf_color = gw_colordiff_line(gw_html_escape(n_buf));
1360 		error = buf_puts(&newsize, diffbuf, buf_color);
1361 		if (error)
1362 			return NULL;
1363 
1364 		error = buf_puts(&newsize, diffbuf, div_end);
1365 		if (error)
1366 			return NULL;
1367 	}
1368 
1369 	if (buf_len(diffbuf) > 0) {
1370 		error = buf_putc(diffbuf, '\0');
1371 		diff_html = strdup(buf_get(diffbuf));
1372 	}
1373 done:
1374 	fclose(f);
1375 	free(buf_color);
1376 	free(buf);
1377 	free(diffbuf);
1378 	free(label1);
1379 	free(label2);
1380 	free(id1);
1381 	free(id2);
1382 
1383 	if (error)
1384 		return NULL;
1385 	else
1386 		return diff_html;
1387 }
1388 
1389 static char *
1390 gw_get_repo_owner(struct gw_trans *gw_trans, char *dir)
1391 {
1392 	FILE *f;
1393 	char *owner = NULL, *d_file = NULL;
1394 	char *gotweb = "[gotweb]", *gitweb = "[gitweb]", *gw_owner = "owner";
1395 	char *comp, *pos, *buf;
1396 	unsigned int i;
1397 
1398 	if (gw_trans->gw_conf->got_show_repo_owner == false)
1399 		goto err;
1400 
1401 	if ((asprintf(&d_file, "%s/config", dir)) == -1)
1402 		goto err;
1403 
1404 	if ((f = fopen(d_file, "r")) == NULL)
1405 		goto err;
1406 
1407 	if ((buf = calloc(128, sizeof(char *))) == NULL)
1408 		goto err;
1409 
1410 	while ((fgets(buf, 128, f)) != NULL) {
1411 		if ((pos = strstr(buf, gotweb)) != NULL)
1412 			break;
1413 
1414 		if ((pos = strstr(buf, gitweb)) != NULL)
1415 			break;
1416 	}
1417 
1418 	if (pos == NULL)
1419 		goto err;
1420 
1421 	do {
1422 		fgets(buf, 128, f);
1423 	} while ((comp = strcasestr(buf, gw_owner)) == NULL);
1424 
1425 	if (comp == NULL)
1426 		goto err;
1427 
1428 	if (strncmp(gw_owner, comp, strlen(gw_owner)) != 0)
1429 		goto err;
1430 
1431 	for (i = 0; i < 2; i++) {
1432 		owner = strsep(&buf, "\"");
1433 	}
1434 
1435 	if (owner == NULL)
1436 		goto err;
1437 
1438 	fclose(f);
1439 	free(d_file);
1440 	return owner;
1441 err:
1442 	if ((asprintf(&owner, "%s", "")) == -1)
1443 		return NULL;
1444 
1445 	return owner;
1446 }
1447 
1448 static char *
1449 gw_get_clone_url(struct gw_trans *gw_trans, char *dir)
1450 {
1451 	FILE *f;
1452 	char *url = NULL, *d_file = NULL;
1453 	unsigned int len;
1454 
1455 	if ((asprintf(&d_file, "%s/cloneurl", dir)) == -1)
1456 		return NULL;
1457 
1458 	if ((f = fopen(d_file, "r")) == NULL)
1459 		return NULL;
1460 
1461 	fseek(f, 0, SEEK_END);
1462 	len = ftell(f) + 1;
1463 	fseek(f, 0, SEEK_SET);
1464 
1465 	if ((url = calloc(len, sizeof(char *))) == NULL)
1466 		return NULL;
1467 
1468 	fread(url, 1, len, f);
1469 	fclose(f);
1470 	free(d_file);
1471 	return url;
1472 }
1473 
1474 static char *
1475 gw_get_repo_tags(struct gw_trans *gw_trans, int limit, int tag_type)
1476 {
1477 	const struct got_error *error = NULL;
1478 	struct got_repository *repo = NULL;
1479 	struct got_reflist_head refs;
1480 	struct got_reflist_entry *re;
1481 	char *tags = NULL, *tag_row = NULL, *tags_navs_disp = NULL,
1482 	     *age = NULL;
1483 	char *newline;
1484 	struct buf *diffbuf = NULL;
1485 	size_t newsize;
1486 
1487 	error = buf_alloc(&diffbuf, 0);
1488 	if (error)
1489 		return NULL;
1490 	SIMPLEQ_INIT(&refs);
1491 
1492 	error = got_repo_open(&repo, gw_trans->repo_path, NULL);
1493 	if (error)
1494 		goto done;
1495 
1496 	error = got_ref_list(&refs, repo, "refs/tags", got_ref_cmp_tags, repo);
1497 	if (error)
1498 		goto done;
1499 
1500 	SIMPLEQ_FOREACH(re, &refs, entry) {
1501 		const char *refname;
1502 		char *refstr, *tag_commit0, *tag_commit, *id_str;
1503 		time_t tagger_time;
1504 		struct got_object_id *id;
1505 		struct got_tag_object *tag;
1506 
1507 		refname = got_ref_get_name(re->ref);
1508 		if (strncmp(refname, "refs/tags/", 10) != 0)
1509 			continue;
1510 		refname += 10;
1511 		refstr = got_ref_to_str(re->ref);
1512 		if (refstr == NULL) {
1513 			error = got_error_from_errno("got_ref_to_str");
1514 			goto done;
1515 		}
1516 
1517 		error = got_ref_resolve(&id, repo, re->ref);
1518 		if (error)
1519 			goto done;
1520 		error = got_object_open_as_tag(&tag, repo, id);
1521 		free(id);
1522 		if (error)
1523 			goto done;
1524 
1525 		tagger_time = got_object_tag_get_tagger_time(tag);
1526 
1527 		error = got_object_id_str(&id_str,
1528 		    got_object_tag_get_object_id(tag));
1529 		if (error)
1530 			goto done;
1531 
1532 		tag_commit0 = strdup(got_object_tag_get_message(tag));
1533 
1534 		if (tag_commit0 == NULL) {
1535 			error = got_error_from_errno("strdup");
1536 			goto done;
1537 		}
1538 
1539 		tag_commit = tag_commit0;
1540 		while (*tag_commit == '\n')
1541 			tag_commit++;
1542 
1543 		switch (tag_type) {
1544 		case TAGBRIEF:
1545 			newline = strchr(tag_commit, '\n');
1546 			if (newline)
1547 				*newline = '\0';
1548 
1549 			if ((asprintf(&age, "%s", gw_get_time_str(tagger_time,
1550 			    TM_DIFF))) == -1) {
1551 				error = got_error_from_errno("asprintf");
1552 				goto done;
1553 			}
1554 
1555 			if ((asprintf(&tags_navs_disp, tags_navs,
1556 			    gw_trans->repo_name, id_str, gw_trans->repo_name,
1557 			    id_str, gw_trans->repo_name, id_str,
1558 			    gw_trans->repo_name, id_str)) == -1) {
1559 				error = got_error_from_errno("asprintf");
1560 				goto done;
1561 			}
1562 
1563 			if ((asprintf(&tag_row, tags_row, age, refname,
1564 			    tag_commit, tags_navs_disp)) == -1) {
1565 				error = got_error_from_errno("asprintf");
1566 				goto done;
1567 			}
1568 
1569 			free(tags_navs_disp);
1570 			break;
1571 		case TAGFULL:
1572 			break;
1573 		default:
1574 			break;
1575 		}
1576 
1577 		got_object_tag_close(tag);
1578 
1579 		error = buf_puts(&newsize, diffbuf, tag_row);
1580 
1581 		free(id_str);
1582 		free(refstr);
1583 		free(age);
1584 		free(tag_commit0);
1585 		free(tag_row);
1586 
1587 		if (error || (limit && --limit == 0))
1588 			break;
1589 	}
1590 
1591 	if (buf_len(diffbuf) > 0) {
1592 		error = buf_putc(diffbuf, '\0');
1593 		tags = strdup(buf_get(diffbuf));
1594 	}
1595 done:
1596 	buf_free(diffbuf);
1597 	got_ref_list_free(&refs);
1598 	if (repo)
1599 		got_repo_close(repo);
1600 	if (error)
1601 		return NULL;
1602 	else
1603 		return tags;
1604 }
1605 
1606 static void
1607 gw_free_headers(struct gw_header *header)
1608 {
1609 	free(header->id);
1610 	free(header->path);
1611 	if (header->commit != NULL)
1612 		got_object_commit_close(header->commit);
1613 	if (header->repo)
1614 		got_repo_close(header->repo);
1615 	free(header->refs_str);
1616 	free(header->commit_id);
1617 	free(header->parent_id);
1618 	free(header->tree_id);
1619 	free(header->author);
1620 	free(header->committer);
1621 	free(header->commit_msg);
1622 }
1623 
1624 static struct gw_header *
1625 gw_init_header()
1626 {
1627 	struct gw_header *header;
1628 
1629 	if ((header = malloc(sizeof(*header))) == NULL)
1630 		return NULL;
1631 
1632 	header->repo = NULL;
1633 	header->commit = NULL;
1634 	header->id = NULL;
1635 	header->path = NULL;
1636 
1637 	return header;
1638 }
1639 
1640 static const struct got_error *
1641 gw_get_commits(struct gw_trans * gw_trans, struct gw_header *header,
1642     int limit)
1643 {
1644 	const struct got_error *error = NULL;
1645 	struct got_commit_graph *graph = NULL;
1646 
1647 	error = got_commit_graph_open(&graph, header->path, 0);
1648 	if (error)
1649 		goto done;
1650 
1651 	error = got_commit_graph_iter_start(graph, header->id, header->repo,
1652 	    NULL, NULL);
1653 	if (error)
1654 		goto done;
1655 
1656 	for (;;) {
1657 		error = got_commit_graph_iter_next(&header->id, graph,
1658 		    header->repo, NULL, NULL);
1659 		if (error) {
1660 			if (error->code == GOT_ERR_ITER_COMPLETED)
1661 				error = NULL;
1662 			goto done;
1663 		}
1664 		if (header->id == NULL)
1665 			goto done;
1666 
1667 		error = got_object_open_as_commit(&header->commit, header->repo,
1668 		    header->id);
1669 		if (error)
1670 			goto done;
1671 
1672 		error = gw_get_commit(gw_trans, header);
1673 		if (limit > 1) {
1674 			struct gw_header *n_header = NULL;
1675 			if ((n_header = gw_init_header()) == NULL)
1676 				error = got_error_from_errno("malloc");
1677 
1678 			n_header->refs_str = strdup(header->refs_str);
1679 			n_header->commit_id = strdup(header->commit_id);
1680 			n_header->parent_id = strdup(header->parent_id);
1681 			n_header->tree_id = strdup(header->tree_id);
1682 			n_header->author = strdup(header->author);
1683 			n_header->committer = strdup(header->committer);
1684 			n_header->commit_msg = strdup(header->commit_msg);
1685 			n_header->committer_time = header->committer_time;
1686 			TAILQ_INSERT_TAIL(&gw_trans->gw_headers, n_header,
1687 			    entry);
1688 		}
1689 		if (error || (limit && --limit == 0))
1690 			break;
1691 	}
1692 done:
1693 	if (graph)
1694 		got_commit_graph_close(graph);
1695 	return error;
1696 }
1697 
1698 static const struct got_error *
1699 gw_get_commit(struct gw_trans *gw_trans, struct gw_header *header)
1700 {
1701 	const struct got_error *error = NULL;
1702 	struct got_reflist_entry *re;
1703 	struct got_object_id *id2 = NULL;
1704 	struct got_object_qid *parent_id;
1705 	char *refs_str = NULL,
1706 	     *commit_msg = NULL, *commit_msg0;
1707 
1708 	/*print commit*/
1709 	SIMPLEQ_FOREACH(re, &header->refs, entry) {
1710 		char *s;
1711 		const char *name;
1712 		struct got_tag_object *tag = NULL;
1713 		int cmp;
1714 
1715 		name = got_ref_get_name(re->ref);
1716 		if (strcmp(name, GOT_REF_HEAD) == 0)
1717 			continue;
1718 		if (strncmp(name, "refs/", 5) == 0)
1719 			name += 5;
1720 		if (strncmp(name, "got/", 4) == 0)
1721 			continue;
1722 		if (strncmp(name, "heads/", 6) == 0)
1723 			name += 6;
1724 		if (strncmp(name, "remotes/", 8) == 0)
1725 			name += 8;
1726 		if (strncmp(name, "tags/", 5) == 0) {
1727 			error = got_object_open_as_tag(&tag, header->repo,
1728 			    re->id);
1729 			if (error) {
1730 				if (error->code != GOT_ERR_OBJ_TYPE)
1731 					continue;
1732 				/*
1733 				 * Ref points at something other
1734 				 * than a tag.
1735 				 */
1736 				error = NULL;
1737 				tag = NULL;
1738 			}
1739 		}
1740 		cmp = got_object_id_cmp(tag ?
1741 		    got_object_tag_get_object_id(tag) : re->id, header->id);
1742 		if (tag)
1743 			got_object_tag_close(tag);
1744 		if (cmp != 0)
1745 			continue;
1746 		s = refs_str;
1747 		if ((asprintf(&refs_str, "%s%s%s", s ? s : "",
1748 		    s ? ", " : "", name)) == -1) {
1749 			error = got_error_from_errno("asprintf");
1750 			free(s);
1751 			return error;
1752 		}
1753 		header->refs_str = strdup(refs_str);
1754 		free(s);
1755 	}
1756 
1757 	if (refs_str == NULL)
1758 		header->refs_str = strdup("");
1759 	free(refs_str);
1760 
1761 	error = got_object_id_str(&header->commit_id, header->id);
1762 	if (error)
1763 		return error;
1764 
1765 	error = got_object_id_str(&header->tree_id,
1766 	    got_object_commit_get_tree_id(header->commit));
1767 	if (error)
1768 		return error;
1769 
1770 	if (gw_trans->action == GW_DIFF) {
1771 		parent_id = SIMPLEQ_FIRST(
1772 		    got_object_commit_get_parent_ids(header->commit));
1773 		if (parent_id != NULL) {
1774 			id2 = got_object_id_dup(parent_id->id);
1775 			free (parent_id);
1776 			error = got_object_id_str(&header->parent_id, id2);
1777 			if (error)
1778 				return error;
1779 			free(id2);
1780 		} else
1781 			header->parent_id = strdup("/dev/null");
1782 	} else
1783 		header->parent_id = strdup("");
1784 
1785 	header->committer_time =
1786 	    got_object_commit_get_committer_time(header->commit);
1787 	header->author = strdup(got_object_commit_get_author(header->commit));
1788 	header->committer =
1789 	    strdup(got_object_commit_get_committer(header->commit));
1790 
1791 	error = got_object_commit_get_logmsg(&commit_msg0, header->commit);
1792 	if (error)
1793 		return error;
1794 
1795 	commit_msg = commit_msg0;
1796 	while (*commit_msg == '\n')
1797 		commit_msg++;
1798 
1799 	header->commit_msg = strdup(commit_msg);
1800 	free(commit_msg0);
1801 	return error;
1802 }
1803 
1804 static const struct got_error *
1805 gw_get_header(struct gw_trans *gw_trans, struct gw_header *header, int limit)
1806 {
1807 	const struct got_error *error = NULL;
1808 	char *in_repo_path = NULL;
1809 
1810 	error = got_repo_open(&header->repo, gw_trans->repo_path, NULL);
1811 	if (error)
1812 		return error;
1813 
1814 	SIMPLEQ_INIT(&header->refs);
1815 
1816 	if (gw_trans->commit == NULL) {
1817 		struct got_reference *head_ref;
1818 		error = got_ref_open(&head_ref, header->repo,
1819 		    gw_trans->headref, 0);
1820 		if (error)
1821 			return error;
1822 
1823 		error = got_ref_resolve(&header->id, header->repo, head_ref);
1824 		got_ref_close(head_ref);
1825 		if (error)
1826 			return error;
1827 
1828 		error = got_object_open_as_commit(&header->commit,
1829 		    header->repo, header->id);
1830 	} else {
1831 		struct got_reference *ref;
1832 		error = got_ref_open(&ref, header->repo, gw_trans->commit, 0);
1833 		if (error == NULL) {
1834 			int obj_type;
1835 			error = got_ref_resolve(&header->id, header->repo, ref);
1836 			got_ref_close(ref);
1837 			if (error)
1838 				return error;
1839 			error = got_object_get_type(&obj_type, header->repo,
1840 			    header->id);
1841 			if (error)
1842 				return error;
1843 			if (obj_type == GOT_OBJ_TYPE_TAG) {
1844 				struct got_tag_object *tag;
1845 				error = got_object_open_as_tag(&tag,
1846 				    header->repo, header->id);
1847 				if (error)
1848 					return error;
1849 				if (got_object_tag_get_object_type(tag) !=
1850 				    GOT_OBJ_TYPE_COMMIT) {
1851 					got_object_tag_close(tag);
1852 					error = got_error(GOT_ERR_OBJ_TYPE);
1853 					return error;
1854 				}
1855 				free(header->id);
1856 				header->id = got_object_id_dup(
1857 				    got_object_tag_get_object_id(tag));
1858 				if (header->id == NULL)
1859 					error = got_error_from_errno(
1860 					    "got_object_id_dup");
1861 				got_object_tag_close(tag);
1862 				if (error)
1863 					return error;
1864 			} else if (obj_type != GOT_OBJ_TYPE_COMMIT) {
1865 				error = got_error(GOT_ERR_OBJ_TYPE);
1866 				return error;
1867 			}
1868 			error = got_object_open_as_commit(&header->commit,
1869 			    header->repo, header->id);
1870 			if (error)
1871 				return error;
1872 		}
1873 		if (header->commit == NULL) {
1874 			error = got_repo_match_object_id_prefix(&header->id,
1875 			    gw_trans->commit, GOT_OBJ_TYPE_COMMIT,
1876 			    header->repo);
1877 			if (error)
1878 				return error;
1879 		}
1880 		error = got_repo_match_object_id_prefix(&header->id,
1881 			    gw_trans->commit, GOT_OBJ_TYPE_COMMIT,
1882 			    header->repo);
1883 	}
1884 
1885 	error = got_repo_map_path(&in_repo_path, header->repo,
1886 	    gw_trans->repo_path, 1);
1887 	if (error)
1888 		return error;
1889 
1890 	if (in_repo_path) {
1891 		header->path = strdup(in_repo_path);
1892 	}
1893 	free(in_repo_path);
1894 
1895 	error = got_ref_list(&header->refs, header->repo, NULL,
1896 	    got_ref_cmp_by_name, NULL);
1897 	if (error)
1898 		return error;
1899 
1900 	error = gw_get_commits(gw_trans, header, limit);
1901 	return error;
1902 }
1903 
1904 struct blame_line {
1905 	int annotated;
1906 	char *id_str;
1907 	char *committer;
1908 	char datebuf[11]; /* YYYY-MM-DD + NUL */
1909 };
1910 
1911 struct gw_blame_cb_args {
1912 	struct blame_line *lines;
1913 	int nlines;
1914 	int nlines_prec;
1915 	int lineno_cur;
1916 	off_t *line_offsets;
1917 	FILE *f;
1918 	struct got_repository *repo;
1919 	struct gw_trans *gw_trans;
1920 	struct buf *blamebuf;
1921 };
1922 
1923 static const struct got_error *
1924 gw_blame_cb(void *arg, int nlines, int lineno, struct got_object_id *id)
1925 {
1926 	const struct got_error *err = NULL;
1927 	struct gw_blame_cb_args *a = arg;
1928 	struct blame_line *bline;
1929 	char *line = NULL;
1930 	size_t linesize = 0, newsize;
1931 	struct got_commit_object *commit = NULL;
1932 	off_t offset;
1933 	struct tm tm;
1934 	time_t committer_time;
1935 
1936 	if (nlines != a->nlines ||
1937 	    (lineno != -1 && lineno < 1) || lineno > a->nlines)
1938 		return got_error(GOT_ERR_RANGE);
1939 
1940 	if (lineno == -1)
1941 		return NULL; /* no change in this commit */
1942 
1943 	/* Annotate this line. */
1944 	bline = &a->lines[lineno - 1];
1945 	if (bline->annotated)
1946 		return NULL;
1947 	err = got_object_id_str(&bline->id_str, id);
1948 	if (err)
1949 		return err;
1950 
1951 	err = got_object_open_as_commit(&commit, a->repo, id);
1952 	if (err)
1953 		goto done;
1954 
1955 	bline->committer = strdup(got_object_commit_get_committer(commit));
1956 	if (bline->committer == NULL) {
1957 		err = got_error_from_errno("strdup");
1958 		goto done;
1959 	}
1960 
1961 	committer_time = got_object_commit_get_committer_time(commit);
1962 	if (localtime_r(&committer_time, &tm) == NULL)
1963 		return got_error_from_errno("localtime_r");
1964 	if (strftime(bline->datebuf, sizeof(bline->datebuf), "%G-%m-%d",
1965 	    &tm) >= sizeof(bline->datebuf)) {
1966 		err = got_error(GOT_ERR_NO_SPACE);
1967 		goto done;
1968 	}
1969 	bline->annotated = 1;
1970 
1971 	/* Print lines annotated so far. */
1972 	bline = &a->lines[a->lineno_cur - 1];
1973 	if (!bline->annotated)
1974 		goto done;
1975 
1976 	offset = a->line_offsets[a->lineno_cur - 1];
1977 	if (fseeko(a->f, offset, SEEK_SET) == -1) {
1978 		err = got_error_from_errno("fseeko");
1979 		goto done;
1980 	}
1981 
1982 	while (bline->annotated) {
1983 		char *smallerthan, *at, *nl, *committer, *blame_row = NULL,
1984 		     *line_escape = NULL;
1985 		size_t len;
1986 
1987 		if (getline(&line, &linesize, a->f) == -1) {
1988 			if (ferror(a->f))
1989 				err = got_error_from_errno("getline");
1990 			break;
1991 		}
1992 
1993 		committer = bline->committer;
1994 		smallerthan = strchr(committer, '<');
1995 		if (smallerthan && smallerthan[1] != '\0')
1996 			committer = smallerthan + 1;
1997 		at = strchr(committer, '@');
1998 		if (at)
1999 			*at = '\0';
2000 		len = strlen(committer);
2001 		if (len >= 9)
2002 			committer[8] = '\0';
2003 
2004 		nl = strchr(line, '\n');
2005 		if (nl)
2006 			*nl = '\0';
2007 
2008 		if (strcmp(line, "") != 0)
2009 			line_escape = strdup(gw_html_escape(line));
2010 		else
2011 			line_escape = strdup("");
2012 
2013 		asprintf(&blame_row, blame_line, a->nlines_prec,
2014 		    a->lineno_cur, bline->id_str, bline->datebuf, committer,
2015 		    line_escape);
2016 		a->lineno_cur++;
2017 		err = buf_puts(&newsize, a->blamebuf, blame_row);
2018 		if (err)
2019 			return err;
2020 
2021 		bline = &a->lines[a->lineno_cur - 1];
2022 		free(line_escape);
2023 		free(blame_row);
2024 	}
2025 done:
2026 	if (commit)
2027 		got_object_commit_close(commit);
2028 	free(line);
2029 	return err;
2030 }
2031 
2032 static char*
2033 gw_get_file_blame(struct gw_trans *gw_trans)
2034 {
2035 	const struct got_error *error = NULL;
2036 	struct got_repository *repo = NULL;
2037 	struct got_object_id *obj_id = NULL;
2038 	struct got_object_id *commit_id = NULL;
2039 	struct got_blob_object *blob = NULL;
2040 	char *blame_html = NULL, *path = NULL, *in_repo_path = NULL,
2041 	     *folder = NULL;
2042 	struct gw_blame_cb_args bca;
2043 	int i, obj_type;
2044 	size_t filesize;
2045 
2046 	error = got_repo_open(&repo, gw_trans->repo_path, NULL);
2047 	if (error)
2048 		goto done;
2049 
2050 	if (gw_trans->repo_folder != NULL) {
2051 		if ((asprintf(&folder, "%s/", gw_trans->repo_folder)) == -1) {
2052 			error = got_error_from_errno("asprintf");
2053 			goto done;
2054 		}
2055 	} else
2056 		folder = strdup("");
2057 
2058 	if ((asprintf(&path, "%s%s", folder, gw_trans->repo_file)) == -1) {
2059 		error = got_error_from_errno("asprintf");
2060 		goto done;
2061 	}
2062 	free(folder);
2063 
2064 	error = got_repo_map_path(&in_repo_path, repo, path, 1);
2065 	if (error)
2066 		goto done;
2067 
2068 	error = got_repo_match_object_id(&commit_id, NULL, gw_trans->commit,
2069 	    GOT_OBJ_TYPE_COMMIT, 1, repo);
2070 	if (error)
2071 		goto done;
2072 
2073 	error = got_object_id_by_path(&obj_id, repo, commit_id, in_repo_path);
2074 	if (error)
2075 		goto done;
2076 
2077 	if (obj_id == NULL) {
2078 		error = got_error(GOT_ERR_NO_OBJ);
2079 		goto done;
2080 	}
2081 
2082 	error = got_object_get_type(&obj_type, repo, obj_id);
2083 	if (error)
2084 		goto done;
2085 
2086 	if (obj_type != GOT_OBJ_TYPE_BLOB) {
2087 		error = got_error(GOT_ERR_OBJ_TYPE);
2088 		goto done;
2089 	}
2090 
2091 	error = got_object_open_as_blob(&blob, repo, obj_id, 8192);
2092 	if (error)
2093 		goto done;
2094 
2095 	error = buf_alloc(&bca.blamebuf, 0);
2096 	if (error)
2097 		goto done;
2098 
2099 	bca.f = got_opentemp();
2100 	if (bca.f == NULL) {
2101 		error = got_error_from_errno("got_opentemp");
2102 		goto done;
2103 	}
2104 	error = got_object_blob_dump_to_file(&filesize, &bca.nlines,
2105 	    &bca.line_offsets, bca.f, blob);
2106 	if (error || bca.nlines == 0)
2107 		goto done;
2108 
2109 	/* Don't include \n at EOF in the blame line count. */
2110 	if (bca.line_offsets[bca.nlines - 1] == filesize)
2111 		bca.nlines--;
2112 
2113 	bca.lines = calloc(bca.nlines, sizeof(*bca.lines));
2114 	if (bca.lines == NULL) {
2115 		error = got_error_from_errno("calloc");
2116 		goto done;
2117 	}
2118 	bca.lineno_cur = 1;
2119 	bca.nlines_prec = 0;
2120 	i = bca.nlines;
2121 	while (i > 0) {
2122 		i /= 10;
2123 		bca.nlines_prec++;
2124 	}
2125 	bca.repo = repo;
2126 	bca.gw_trans = gw_trans;
2127 
2128 	error = got_blame(in_repo_path, commit_id, repo, gw_blame_cb, &bca,
2129 	    NULL, NULL);
2130 	if (buf_len(bca.blamebuf) > 0) {
2131 		error = buf_putc(bca.blamebuf, '\0');
2132 		blame_html = strdup(buf_get(bca.blamebuf));
2133 	}
2134 done:
2135 	free(bca.blamebuf);
2136 	free(in_repo_path);
2137 	free(commit_id);
2138 	free(obj_id);
2139 	free(path);
2140 
2141 	if (blob)
2142 		error = got_object_blob_close(blob);
2143 	if (repo)
2144 		error = got_repo_close(repo);
2145 	if (error)
2146 		return NULL;
2147 	if (bca.lines) {
2148 		for (i = 0; i < bca.nlines; i++) {
2149 			struct blame_line *bline = &bca.lines[i];
2150 			free(bline->id_str);
2151 			free(bline->committer);
2152 		}
2153 		free(bca.lines);
2154 	}
2155 	free(bca.line_offsets);
2156 	if (bca.f && fclose(bca.f) == EOF && error == NULL)
2157 		error = got_error_from_errno("fclose");
2158 	if (error)
2159 		return NULL;
2160 	else
2161 		return blame_html;
2162 }
2163 
2164 static char*
2165 gw_get_repo_tree(struct gw_trans *gw_trans)
2166 {
2167 	const struct got_error *error = NULL;
2168 	struct got_repository *repo = NULL;
2169 	struct got_object_id *tree_id = NULL, *commit_id = NULL;
2170 	struct got_tree_object *tree = NULL;
2171 	struct buf *diffbuf = NULL;
2172 	size_t newsize;
2173 	char *tree_html = NULL, *path = NULL, *in_repo_path = NULL,
2174 	    *tree_row = NULL, *id_str;
2175 	int nentries, i;
2176 
2177 	error = buf_alloc(&diffbuf, 0);
2178 	if (error)
2179 		return NULL;
2180 
2181 	error = got_repo_open(&repo, gw_trans->repo_path, NULL);
2182 	if (error)
2183 		goto done;
2184 
2185 	error = got_repo_map_path(&in_repo_path, repo, gw_trans->repo_path, 1);
2186 	if (error)
2187 		goto done;
2188 
2189 	if (gw_trans->repo_folder != NULL)
2190 		path = strdup(gw_trans->repo_folder);
2191 	else if (in_repo_path) {
2192 		free(path);
2193 		path = in_repo_path;
2194 	}
2195 
2196 	if (gw_trans->commit == NULL) {
2197 		struct got_reference *head_ref;
2198 		error = got_ref_open(&head_ref, repo, gw_trans->headref, 0);
2199 		if (error)
2200 			goto done;
2201 
2202 		error = got_ref_resolve(&commit_id, repo, head_ref);
2203 		got_ref_close(head_ref);
2204 
2205 	} else
2206 		error = got_repo_match_object_id(&commit_id, NULL,
2207 		    gw_trans->commit, GOT_OBJ_TYPE_COMMIT, 1, repo);
2208 	if (error)
2209 		goto done;
2210 
2211 	error = got_object_id_str(&gw_trans->commit, commit_id);
2212 	if (error)
2213 		goto done;
2214 
2215 	error = got_object_id_by_path(&tree_id, repo, commit_id, path);
2216 	if (error)
2217 		goto done;
2218 
2219 	error = got_object_open_as_tree(&tree, repo, tree_id);
2220 	if (error)
2221 		goto done;
2222 
2223 	nentries = got_object_tree_get_nentries(tree);
2224 
2225 	for (i = 0; i < nentries; i++) {
2226 		struct got_tree_entry *te;
2227 		const char *modestr = "";
2228 		char *id = NULL, *url_html = NULL;
2229 
2230 		te = got_object_tree_get_entry(tree, i);
2231 
2232 		error = got_object_id_str(&id_str, got_tree_entry_get_id(te));
2233 		if (error)
2234 			goto done;
2235 
2236 		if ((asprintf(&id, "%s", id_str)) == -1) {
2237 			error = got_error_from_errno("asprintf");
2238 			free(id_str);
2239 			goto done;
2240 		}
2241 
2242 		mode_t mode = got_tree_entry_get_mode(te);
2243 
2244 		if (got_object_tree_entry_is_submodule(te))
2245 			modestr = "$";
2246 		else if (S_ISLNK(mode))
2247 			modestr = "@";
2248 		else if (S_ISDIR(mode))
2249 			modestr = "/";
2250 		else if (mode & S_IXUSR)
2251 			modestr = "*";
2252 
2253 		char *build_folder = NULL;
2254 		if (S_ISDIR(got_tree_entry_get_mode(te))) {
2255 			if (gw_trans->repo_folder != NULL) {
2256 				if ((asprintf(&build_folder, "%s/%s",
2257 				    gw_trans->repo_folder,
2258 				    got_tree_entry_get_name(te))) == -1) {
2259 					error =
2260 					    got_error_from_errno("asprintf");
2261 					goto done;
2262 				}
2263 			} else {
2264 				if (asprintf(&build_folder, "%s",
2265 				    got_tree_entry_get_name(te)) == -1)
2266 					goto done;
2267 			}
2268 
2269 			if ((asprintf(&url_html, folder_html,
2270 			    gw_trans->repo_name, gw_trans->action_name,
2271 			    gw_trans->commit, build_folder,
2272 			    got_tree_entry_get_name(te), modestr)) == -1) {
2273 				error = got_error_from_errno("asprintf");
2274 				goto done;
2275 			}
2276 		} else {
2277 			if (gw_trans->repo_folder != NULL) {
2278 				if ((asprintf(&build_folder, "%s",
2279 				    gw_trans->repo_folder)) == -1) {
2280 					error =
2281 					    got_error_from_errno("asprintf");
2282 					goto done;
2283 				}
2284 			} else
2285 				build_folder = strdup("");
2286 
2287 			if ((asprintf(&url_html, file_html, gw_trans->repo_name,
2288 			    "blame", gw_trans->commit,
2289 			    got_tree_entry_get_name(te), build_folder,
2290 			    got_tree_entry_get_name(te), modestr)) == -1) {
2291 				error = got_error_from_errno("asprintf");
2292 				goto done;
2293 			}
2294 		}
2295 		free(build_folder);
2296 
2297 		if (error)
2298 			goto done;
2299 
2300 		if ((asprintf(&tree_row, tree_line, url_html)) == -1) {
2301 			error = got_error_from_errno("asprintf");
2302 			goto done;
2303 		}
2304 		error = buf_puts(&newsize, diffbuf, tree_row);
2305 		if (error)
2306 			goto done;
2307 
2308 		free(id);
2309 		free(id_str);
2310 		free(url_html);
2311 		free(tree_row);
2312 	}
2313 
2314 	if (buf_len(diffbuf) > 0) {
2315 		error = buf_putc(diffbuf, '\0');
2316 		tree_html = strdup(buf_get(diffbuf));
2317 	}
2318 done:
2319 	if (tree)
2320 		got_object_tree_close(tree);
2321 	if (repo)
2322 		got_repo_close(repo);
2323 
2324 	free(in_repo_path);
2325 	free(tree_id);
2326 	free(diffbuf);
2327 	if (error)
2328 		return NULL;
2329 	else
2330 		return tree_html;
2331 }
2332 
2333 static char *
2334 gw_get_repo_heads(struct gw_trans *gw_trans)
2335 {
2336 	const struct got_error *error = NULL;
2337 	struct got_repository *repo = NULL;
2338 	struct got_reflist_head refs;
2339 	struct got_reflist_entry *re;
2340 	char *heads, *head_row = NULL, *head_navs_disp = NULL, *age = NULL;
2341 	struct buf *diffbuf = NULL;
2342 	size_t newsize;
2343 
2344 	error = buf_alloc(&diffbuf, 0);
2345 	if (error)
2346 		return NULL;
2347 
2348 	error = got_repo_open(&repo, gw_trans->repo_path, NULL);
2349 	if (error)
2350 		goto done;
2351 
2352 	SIMPLEQ_INIT(&refs);
2353 	error = got_ref_list(&refs, repo, "refs/heads", got_ref_cmp_by_name,
2354 	    NULL);
2355 	if (error)
2356 		goto done;
2357 
2358 	SIMPLEQ_FOREACH(re, &refs, entry) {
2359 		char *refname;
2360 
2361 		refname = strdup(got_ref_get_name(re->ref));
2362 		if (refname == NULL) {
2363 			error = got_error_from_errno("got_ref_to_str");
2364 			goto done;
2365 		}
2366 
2367 		if (strncmp(refname, "refs/heads/", 11) != 0) {
2368 			free(refname);
2369 			continue;
2370 		}
2371 
2372 		age = gw_get_repo_age(gw_trans, gw_trans->gw_dir->path, refname,
2373 		    TM_DIFF);
2374 
2375 		if ((asprintf(&head_navs_disp, heads_navs, gw_trans->repo_name,
2376 		    refname, gw_trans->repo_name, refname,
2377 		    gw_trans->repo_name, refname, gw_trans->repo_name,
2378 		    refname)) == -1) {
2379 			error = got_error_from_errno("asprintf");
2380 			goto done;
2381 		}
2382 
2383 		if (strncmp(refname, "refs/heads/", 11) == 0)
2384 			refname += 11;
2385 
2386 		if ((asprintf(&head_row, heads_row, age, refname,
2387 		    head_navs_disp)) == -1) {
2388 			error = got_error_from_errno("asprintf");
2389 			goto done;
2390 		}
2391 
2392 		error = buf_puts(&newsize, diffbuf, head_row);
2393 
2394 		free(head_navs_disp);
2395 		free(head_row);
2396 	}
2397 
2398 	if (buf_len(diffbuf) > 0) {
2399 		error = buf_putc(diffbuf, '\0');
2400 		heads = strdup(buf_get(diffbuf));
2401 	}
2402 done:
2403 	buf_free(diffbuf);
2404 	got_ref_list_free(&refs);
2405 	if (repo)
2406 		got_repo_close(repo);
2407 	if (error)
2408 		return NULL;
2409 	else
2410 		return heads;
2411 }
2412 
2413 static char *
2414 gw_get_got_link(struct gw_trans *gw_trans)
2415 {
2416 	char *link;
2417 
2418 	if ((asprintf(&link, got_link, gw_trans->gw_conf->got_logo_url,
2419 	    gw_trans->gw_conf->got_logo)) == -1)
2420 		return NULL;
2421 
2422 	return link;
2423 }
2424 
2425 static char *
2426 gw_get_site_link(struct gw_trans *gw_trans)
2427 {
2428 	char *link, *repo = "", *action = "";
2429 
2430 	if (gw_trans->repo_name != NULL)
2431 		if ((asprintf(&repo, " / <a href='?path=%s&action=summary'>%s" \
2432 		    "</a>", gw_trans->repo_name, gw_trans->repo_name)) == -1)
2433 			return NULL;
2434 
2435 	if (gw_trans->action_name != NULL)
2436 		if ((asprintf(&action, " / %s", gw_trans->action_name)) == -1)
2437 			return NULL;
2438 
2439 	if ((asprintf(&link, site_link, GOTWEB,
2440 	    gw_trans->gw_conf->got_site_link, repo, action)) == -1)
2441 		return NULL;
2442 
2443 	return link;
2444 }
2445 
2446 static char *
2447 gw_colordiff_line(char *buf)
2448 {
2449 	const struct got_error *error = NULL;
2450 	char *colorized_line = NULL, *div_diff_line_div = NULL, *color = NULL;
2451 	struct buf *diffbuf = NULL;
2452 	size_t newsize;
2453 
2454 	error = buf_alloc(&diffbuf, 0);
2455 	if (error)
2456 		return NULL;
2457 
2458 	if (strncmp(buf, "-", 1) == 0)
2459 		color = "diff_minus";
2460 	if (strncmp(buf, "+", 1) == 0)
2461 		color = "diff_plus";
2462 	if (strncmp(buf, "@@", 2) == 0)
2463 		color = "diff_chunk_header";
2464 	if (strncmp(buf, "@@", 2) == 0)
2465 		color = "diff_chunk_header";
2466 	if (strncmp(buf, "commit +", 8) == 0)
2467 		color = "diff_meta";
2468 	if (strncmp(buf, "commit -", 8) == 0)
2469 		color = "diff_meta";
2470 	if (strncmp(buf, "blob +", 6) == 0)
2471 		color = "diff_meta";
2472 	if (strncmp(buf, "blob -", 6) == 0)
2473 		color = "diff_meta";
2474 	if (strncmp(buf, "file +", 6) == 0)
2475 		color = "diff_meta";
2476 	if (strncmp(buf, "file -", 6) == 0)
2477 		color = "diff_meta";
2478 	if (strncmp(buf, "from:", 5) == 0)
2479 		color = "diff_author";
2480 	if (strncmp(buf, "via:", 4) == 0)
2481 		color = "diff_author";
2482 	if (strncmp(buf, "date:", 5) == 0)
2483 		color = "diff_date";
2484 
2485 	if ((asprintf(&div_diff_line_div, div_diff_line, color)) == -1)
2486 		return NULL;
2487 
2488 	error = buf_puts(&newsize, diffbuf, div_diff_line_div);
2489 	if (error)
2490 		return NULL;
2491 
2492 	error = buf_puts(&newsize, diffbuf, buf);
2493 	if (error)
2494 		return NULL;
2495 
2496 	if (buf_len(diffbuf) > 0) {
2497 		error = buf_putc(diffbuf, '\0');
2498 		colorized_line = strdup(buf_get(diffbuf));
2499 	}
2500 
2501 	free(diffbuf);
2502 	free(div_diff_line_div);
2503 	return colorized_line;
2504 }
2505 
2506 static char *
2507 gw_html_escape(const char *html)
2508 {
2509 	char *escaped_str = NULL, *buf;
2510 	char c[1];
2511 	size_t sz, i, buff_sz = 2048;
2512 
2513 	if ((buf = calloc(buff_sz, sizeof(char *))) == NULL)
2514 		return NULL;
2515 
2516 	if (html == NULL)
2517 		return NULL;
2518 	else
2519 		if ((sz = strlen(html)) == 0)
2520 			return NULL;
2521 
2522 	/* only work with buff_sz */
2523 	if (buff_sz < sz)
2524 		sz = buff_sz;
2525 
2526 	for (i = 0; i < sz; i++) {
2527 		c[0] = html[i];
2528 		switch (c[0]) {
2529 		case ('>'):
2530 			strcat(buf, "&gt;");
2531 			break;
2532 		case ('&'):
2533 			strcat(buf, "&amp;");
2534 			break;
2535 		case ('<'):
2536 			strcat(buf, "&lt;");
2537 			break;
2538 		case ('"'):
2539 			strcat(buf, "&quot;");
2540 			break;
2541 		case ('\''):
2542 			strcat(buf, "&apos;");
2543 			break;
2544 		case ('\n'):
2545 			strcat(buf, "<br />");
2546 		default:
2547 			strcat(buf, &c[0]);
2548 			break;
2549 		}
2550 	}
2551 	asprintf(&escaped_str, "%s", buf);
2552 	free(buf);
2553 	return escaped_str;
2554 }
2555 
2556 int
2557 main(int argc, char *argv[])
2558 {
2559 	const struct got_error *error = NULL;
2560 	struct gw_trans *gw_trans;
2561 	struct gw_dir *dir = NULL, *tdir;
2562 	const char *page = "index";
2563 	int gw_malloc = 1;
2564 
2565 	if ((gw_trans = malloc(sizeof(struct gw_trans))) == NULL)
2566 		errx(1, "malloc");
2567 
2568 	if ((gw_trans->gw_req = malloc(sizeof(struct kreq))) == NULL)
2569 		errx(1, "malloc");
2570 
2571 	if ((gw_trans->gw_html_req = malloc(sizeof(struct khtmlreq))) == NULL)
2572 		errx(1, "malloc");
2573 
2574 	if ((gw_trans->gw_tmpl = malloc(sizeof(struct ktemplate))) == NULL)
2575 		errx(1, "malloc");
2576 
2577 	if (KCGI_OK != khttp_parse(gw_trans->gw_req, gw_keys, KEY__ZMAX,
2578 	    &page, 1, 0))
2579 		errx(1, "khttp_parse");
2580 
2581 	if ((gw_trans->gw_conf =
2582 	    malloc(sizeof(struct gotweb_conf))) == NULL) {
2583 		gw_malloc = 0;
2584 		error = got_error_from_errno("malloc");
2585 		goto err;
2586 	}
2587 
2588 	TAILQ_INIT(&gw_trans->gw_dirs);
2589 	TAILQ_INIT(&gw_trans->gw_headers);
2590 
2591 	gw_trans->page = 0;
2592 	gw_trans->repos_total = 0;
2593 	gw_trans->repo_path = NULL;
2594 	gw_trans->commit = NULL;
2595 	gw_trans->headref = strdup(GOT_REF_HEAD);
2596 	gw_trans->mime = KMIME_TEXT_HTML;
2597 	gw_trans->gw_tmpl->key = gw_templs;
2598 	gw_trans->gw_tmpl->keysz = TEMPL__MAX;
2599 	gw_trans->gw_tmpl->arg = gw_trans;
2600 	gw_trans->gw_tmpl->cb = gw_template;
2601 	error = parse_conf(GOTWEB_CONF, gw_trans->gw_conf);
2602 
2603 err:
2604 	if (error) {
2605 		gw_trans->mime = KMIME_TEXT_PLAIN;
2606 		gw_trans->action = GW_ERR;
2607 		gw_display_index(gw_trans, error);
2608 		goto done;
2609 	}
2610 
2611 	error = gw_parse_querystring(gw_trans);
2612 	if (error)
2613 		goto err;
2614 
2615 	gw_display_index(gw_trans, error);
2616 
2617 done:
2618 	if (gw_malloc) {
2619 		free(gw_trans->gw_conf->got_repos_path);
2620 		free(gw_trans->gw_conf->got_www_path);
2621 		free(gw_trans->gw_conf->got_site_name);
2622 		free(gw_trans->gw_conf->got_site_owner);
2623 		free(gw_trans->gw_conf->got_site_link);
2624 		free(gw_trans->gw_conf->got_logo);
2625 		free(gw_trans->gw_conf->got_logo_url);
2626 		free(gw_trans->gw_conf);
2627 		free(gw_trans->commit);
2628 		free(gw_trans->repo_path);
2629 		free(gw_trans->repo_name);
2630 		free(gw_trans->repo_file);
2631 		free(gw_trans->action_name);
2632 		free(gw_trans->headref);
2633 
2634 		TAILQ_FOREACH_SAFE(dir, &gw_trans->gw_dirs, entry, tdir) {
2635 			free(dir->name);
2636 			free(dir->description);
2637 			free(dir->age);
2638 			free(dir->url);
2639 			free(dir->path);
2640 			free(dir);
2641 		}
2642 
2643 	}
2644 
2645 	khttp_free(gw_trans->gw_req);
2646 	return EXIT_SUCCESS;
2647 }