summaryrefslogtreecommitdiffabout
path: root/cgit.c
Unidiff
Diffstat (limited to 'cgit.c') (more/less context) (ignore whitespace changes)
-rw-r--r--cgit.c117
1 files changed, 102 insertions, 15 deletions
diff --git a/cgit.c b/cgit.c
index 4c14f77..09c857c 100644
--- a/cgit.c
+++ b/cgit.c
@@ -9,31 +9,49 @@ static const char cgit_error[] =
9 9
10static const char cgit_lib_error[] = 10static const char cgit_lib_error[] =
11"<div class='error'>%s: %s</div>"; 11"<div class='error'>%s: %s</div>";
12 12
13int htmlfd = 0;
13 14
14char *cgit_root = "/var/git"; 15char *cgit_root = "/usr/src/git";
15char *cgit_root_title = "Git repository browser"; 16char *cgit_root_title = "Git repository browser";
16char *cgit_css = "/cgit.css"; 17char *cgit_css = "/cgit.css";
17char *cgit_logo = "/git-logo.png"; 18char *cgit_logo = "/git-logo.png";
18char *cgit_logo_link = "http://www.kernel.org/pub/software/scm/git/docs/"; 19char *cgit_logo_link = "http://www.kernel.org/pub/software/scm/git/docs/";
19char *cgit_virtual_root = NULL; 20char *cgit_virtual_root = NULL;
20 21
22char *cgit_cache_root = "/var/cache/cgit";
23
24int cgit_cache_root_ttl = 5;
25int cgit_cache_repo_ttl = 5;
26int cgit_cache_dynamic_ttl = 5;
27int cgit_cache_static_ttl = -1;
28int cgit_cache_max_create_time = 5;
29
21char *cgit_repo_name = NULL; 30char *cgit_repo_name = NULL;
22char *cgit_repo_desc = NULL; 31char *cgit_repo_desc = NULL;
23char *cgit_repo_owner = NULL; 32char *cgit_repo_owner = NULL;
24 33
34int cgit_query_has_symref = 0;
35int cgit_query_has_sha1 = 0;
36
37char *cgit_querystring = NULL;
25char *cgit_query_repo = NULL; 38char *cgit_query_repo = NULL;
26char *cgit_query_page = NULL; 39char *cgit_query_page = NULL;
27char *cgit_query_head = NULL; 40char *cgit_query_head = NULL;
41char *cgit_query_sha1 = NULL;
42
43struct cacheitem cacheitem;
28 44
29int cgit_parse_query(char *txt, configfn fn) 45int cgit_parse_query(char *txt, configfn fn)
30{ 46{
31 char *t = txt, *value = NULL, c; 47 char *t, *value = NULL, c;
32 48
33 if (!txt) 49 if (!txt)
34 return 0; 50 return 0;
35 51
52 t = txt = xstrdup(txt);
53
36 while((c=*t) != '\0') { 54 while((c=*t) != '\0') {
37 if (c=='=') { 55 if (c=='=') {
38 *t = '\0'; 56 *t = '\0';
39 value = t+1; 57 value = t+1;
@@ -81,10 +99,15 @@ void cgit_querystring_cb(const char *name, const char *value)
81 if (!strcmp(name,"r")) 99 if (!strcmp(name,"r"))
82 cgit_query_repo = xstrdup(value); 100 cgit_query_repo = xstrdup(value);
83 else if (!strcmp(name, "p")) 101 else if (!strcmp(name, "p"))
84 cgit_query_page = xstrdup(value); 102 cgit_query_page = xstrdup(value);
85 else if (!strcmp(name, "h")) 103 else if (!strcmp(name, "h")) {
86 cgit_query_head = xstrdup(value); 104 cgit_query_head = xstrdup(value);
105 cgit_query_has_symref = 1;
106 } else if (!strcmp(name, "id")) {
107 cgit_query_sha1 = xstrdup(value);
108 cgit_query_has_sha1 = 1;
109 }
87} 110}
88 111
89char *cgit_repourl(const char *reponame) 112char *cgit_repourl(const char *reponame)
90{ 113{
@@ -135,11 +158,34 @@ static int cgit_print_branch_cb(const char *refname, const unsigned char *sha1,
135 } 158 }
136 return 0; 159 return 0;
137} 160}
138 161
162/* Sun, 06 Nov 1994 08:49:37 GMT */
163static char *http_date(time_t t)
164{
165 static char day[][4] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
166 static char month[][4] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
167 "Jul", "Aug", "Sep", "Oct", "Now", "Dec"};
168 struct tm *tm = gmtime(&t);
169 return fmt("%s, %02d %s %04d %02d:%02d:%02d GMT", day[tm->tm_wday],
170 tm->tm_mday, month[tm->tm_mon], 1900+tm->tm_year,
171 tm->tm_hour, tm->tm_min, tm->tm_sec);
172}
173
174static int ttl_seconds(int ttl)
175{
176 if (ttl<0)
177 return 60 * 60 * 24 * 365;
178 else
179 return ttl * 60;
180}
181
139static void cgit_print_docstart(char *title) 182static void cgit_print_docstart(char *title)
140{ 183{
141 html("Content-Type: text/html; charset=utf-8\n"); 184 html("Content-Type: text/html; charset=utf-8\n");
185 htmlf("Last-Modified: %s\n", http_date(cacheitem.st.st_mtime));
186 htmlf("Expires: %s\n", http_date(cacheitem.st.st_mtime +
187 ttl_seconds(cacheitem.ttl)));
142 html("\n"); 188 html("\n");
143 html(cgit_doctype); 189 html(cgit_doctype);
144 html("<html>\n"); 190 html("<html>\n");
145 html("<head>\n"); 191 html("<head>\n");
@@ -174,8 +220,9 @@ static void cgit_print_repolist()
174 struct dirent *de; 220 struct dirent *de;
175 struct stat st; 221 struct stat st;
176 char *name; 222 char *name;
177 223
224 chdir(cgit_root);
178 cgit_print_docstart(cgit_root_title); 225 cgit_print_docstart(cgit_root_title);
179 cgit_print_pageheader(cgit_root_title); 226 cgit_print_pageheader(cgit_root_title);
180 227
181 if (!(d = opendir("."))) { 228 if (!(d = opendir("."))) {
@@ -196,9 +243,9 @@ static void cgit_print_repolist()
196 if (!S_ISDIR(st.st_mode)) 243 if (!S_ISDIR(st.st_mode))
197 continue; 244 continue;
198 245
199 cgit_repo_name = cgit_repo_desc = cgit_repo_owner = NULL; 246 cgit_repo_name = cgit_repo_desc = cgit_repo_owner = NULL;
200 name = fmt("%s/.git/info/cgit", de->d_name); 247 name = fmt("%s/info/cgit", de->d_name);
201 if (cgit_read_config(name, cgit_repo_config_cb)) 248 if (cgit_read_config(name, cgit_repo_config_cb))
202 continue; 249 continue;
203 250
204 html("<tr><td>"); 251 html("<tr><td>");
@@ -290,9 +337,9 @@ static void cgit_print_commit_shortlog(struct commit *commit)
290 html("<tr><td>"); 337 html("<tr><td>");
291 strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", time); 338 strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", time);
292 html_txt(buf); 339 html_txt(buf);
293 html("</td><td>"); 340 html("</td><td>");
294 char *qry = fmt("h=%s", sha1_to_hex(commit->object.sha1)); 341 char *qry = fmt("id=%s", sha1_to_hex(commit->object.sha1));
295 char *url = cgit_pageurl(cgit_query_repo, "view", qry); 342 char *url = cgit_pageurl(cgit_query_repo, "view", qry);
296 html_link_open(url, NULL, NULL); 343 html_link_open(url, NULL, NULL);
297 html_txt(subject); 344 html_txt(subject);
298 html_link_close(); 345 html_link_close();
@@ -370,41 +417,81 @@ static void cgit_print_object(char *hex)
370} 417}
371 418
372static void cgit_print_repo_page() 419static void cgit_print_repo_page()
373{ 420{
374 if (chdir(cgit_query_repo) || 421 if (chdir(fmt("%s/%s", cgit_root, cgit_query_repo)) ||
375 cgit_read_config(".git/info/cgit", cgit_repo_config_cb)) { 422 cgit_read_config("info/cgit", cgit_repo_config_cb)) {
376 char *title = fmt("%s - %s", cgit_root_title, "Bad request"); 423 char *title = fmt("%s - %s", cgit_root_title, "Bad request");
377 cgit_print_docstart(title); 424 cgit_print_docstart(title);
378 cgit_print_pageheader(title); 425 cgit_print_pageheader(title);
379 htmlf(cgit_lib_error, "Unable to scan repository", 426 htmlf(cgit_lib_error, "Unable to scan repository",
380 strerror(errno)); 427 strerror(errno));
381 cgit_print_docend(); 428 cgit_print_docend();
382 return; 429 return;
383 } 430 }
384 431 setenv("GIT_DIR", fmt("%s/%s", cgit_root, cgit_query_repo), 1);
385 char *title = fmt("%s - %s", cgit_repo_name, cgit_repo_desc); 432 char *title = fmt("%s - %s", cgit_repo_name, cgit_repo_desc);
386 cgit_print_docstart(title); 433 cgit_print_docstart(title);
387 cgit_print_pageheader(title); 434 cgit_print_pageheader(title);
388 if (!cgit_query_page) 435 if (!cgit_query_page)
389 cgit_print_repo_summary(); 436 cgit_print_repo_summary();
390 else if (!strcmp(cgit_query_page, "log")) { 437 else if (!strcmp(cgit_query_page, "log")) {
391 cgit_print_log(cgit_query_head, 0, 100); 438 cgit_print_log(cgit_query_head, 0, 100);
392 } else if (!strcmp(cgit_query_page, "view")) { 439 } else if (!strcmp(cgit_query_page, "view")) {
393 cgit_print_object(cgit_query_head); 440 cgit_print_object(cgit_query_sha1);
394 } 441 }
395 cgit_print_docend(); 442 cgit_print_docend();
396} 443}
397 444
398int main(int argc, const char **argv) 445static void cgit_fill_cache(struct cacheitem *item)
399{ 446{
400 if (cgit_read_config("/etc/cgitrc", cgit_global_config_cb)) 447 htmlfd = item->fd;
401 die("Error reading config: %d %s", errno, strerror(errno)); 448 item->st.st_mtime = time(NULL);
402
403 chdir(cgit_root);
404 cgit_parse_query(getenv("QUERY_STRING"), cgit_querystring_cb);
405 if (cgit_query_repo) 449 if (cgit_query_repo)
406 cgit_print_repo_page(); 450 cgit_print_repo_page();
407 else 451 else
408 cgit_print_repolist(); 452 cgit_print_repolist();
453}
454
455static void cgit_refresh_cache(struct cacheitem *item)
456{
457 top:
458 if (!cache_lookup(item)) {
459 if (cache_lock(item)) {
460 cgit_fill_cache(item);
461 cache_unlock(item);
462 } else {
463 sched_yield();
464 goto top;
465 }
466 } else if (cache_expired(item)) {
467 if (cache_lock(item)) {
468 cgit_fill_cache(item);
469 cache_unlock(item);
470 }
471 }
472}
473
474static void cgit_print_cache(struct cacheitem *item)
475{
476 static char buf[4096];
477 ssize_t i;
478
479 int fd = open(item->name, O_RDONLY);
480 if (fd<0)
481 die("Unable to open cached file %s", item->name);
482
483 while((i=read(fd, buf, sizeof(buf))) > 0)
484 write(STDOUT_FILENO, buf, i);
485
486 close(fd);
487}
488
489int main(int argc, const char **argv)
490{
491 cgit_read_config("/etc/cgitrc", cgit_global_config_cb);
492 cgit_querystring = xstrdup(getenv("QUERY_STRING"));
493 cgit_parse_query(cgit_querystring, cgit_querystring_cb);
494 cgit_refresh_cache(&cacheitem);
495 cgit_print_cache(&cacheitem);
409 return 0; 496 return 0;
410} 497}