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-rw-r--r--Makefile24
-rw-r--r--cgit.c410
-rw-r--r--cgit.css63
-rw-r--r--cgit.h21
-rw-r--r--config.c73
-rw-r--r--git.h399
-rw-r--r--html.c100
7 files changed, 1090 insertions, 0 deletions
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..1470c0a
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,24 @@
1
2INSTALL_BIN = /var/www/htdocs/cgit.cgi
3INSTALL_CSS = /var/www/htdocs/cgit.css
4
5EXTLIBS = ../git/libgit.a ../git/xdiff/lib.a -lz -lcrypto
6OBJECTS = cgit.o config.o html.o
7
8all: cgit
9
10install: all
11 install cgit $(INSTALL_BIN)
12 install cgit.css $(INSTALL_CSS)
13
14clean:
15 rm -f cgit *.o
16
17cgit: $(OBJECTS)
18 $(CC) -o cgit $(OBJECTS) $(EXTLIBS)
19
20cgit.o: cgit.h git.h config.o html.o
21
22config.o: cgit.h git.h html.c
23
24html.o: cgit.h git.h html.c
diff --git a/cgit.c b/cgit.c
new file mode 100644
index 0000000..4c14f77
--- /dev/null
+++ b/cgit.c
@@ -0,0 +1,410 @@
1#include "cgit.h"
2
3static const char cgit_doctype[] =
4"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n"
5" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n";
6
7static const char cgit_error[] =
8"<div class='error'>%s</div>";
9
10static const char cgit_lib_error[] =
11"<div class='error'>%s: %s</div>";
12
13
14char *cgit_root = "/var/git";
15char *cgit_root_title = "Git repository browser";
16char *cgit_css = "/cgit.css";
17char *cgit_logo = "/git-logo.png";
18char *cgit_logo_link = "http://www.kernel.org/pub/software/scm/git/docs/";
19char *cgit_virtual_root = NULL;
20
21char *cgit_repo_name = NULL;
22char *cgit_repo_desc = NULL;
23char *cgit_repo_owner = NULL;
24
25char *cgit_query_repo = NULL;
26char *cgit_query_page = NULL;
27char *cgit_query_head = NULL;
28
29int cgit_parse_query(char *txt, configfn fn)
30{
31 char *t = txt, *value = NULL, c;
32
33 if (!txt)
34 return 0;
35
36 while((c=*t) != '\0') {
37 if (c=='=') {
38 *t = '\0';
39 value = t+1;
40 } else if (c=='&') {
41 *t = '\0';
42 (*fn)(txt, value);
43 txt = t+1;
44 value = NULL;
45 }
46 t++;
47 }
48 if (t!=txt)
49 (*fn)(txt, value);
50 return 0;
51}
52
53void cgit_global_config_cb(const char *name, const char *value)
54{
55 if (!strcmp(name, "root"))
56 cgit_root = xstrdup(value);
57 else if (!strcmp(name, "root-title"))
58 cgit_root_title = xstrdup(value);
59 else if (!strcmp(name, "css"))
60 cgit_css = xstrdup(value);
61 else if (!strcmp(name, "logo"))
62 cgit_logo = xstrdup(value);
63 else if (!strcmp(name, "logo-link"))
64 cgit_logo_link = xstrdup(value);
65 else if (!strcmp(name, "virtual-root"))
66 cgit_virtual_root = xstrdup(value);
67}
68
69void cgit_repo_config_cb(const char *name, const char *value)
70{
71 if (!strcmp(name, "name"))
72 cgit_repo_name = xstrdup(value);
73 else if (!strcmp(name, "desc"))
74 cgit_repo_desc = xstrdup(value);
75 else if (!strcmp(name, "owner"))
76 cgit_repo_owner = xstrdup(value);
77}
78
79void cgit_querystring_cb(const char *name, const char *value)
80{
81 if (!strcmp(name,"r"))
82 cgit_query_repo = xstrdup(value);
83 else if (!strcmp(name, "p"))
84 cgit_query_page = xstrdup(value);
85 else if (!strcmp(name, "h"))
86 cgit_query_head = xstrdup(value);
87}
88
89char *cgit_repourl(const char *reponame)
90{
91 if (cgit_virtual_root) {
92 return fmt("%s/%s/", cgit_virtual_root, reponame);
93 } else {
94 return fmt("?r=%s", reponame);
95 }
96}
97
98char *cgit_pageurl(const char *reponame, const char *pagename,
99 const char *query)
100{
101 if (cgit_virtual_root) {
102 return fmt("%s/%s/%s/?%s", cgit_virtual_root, reponame,
103 pagename, query);
104 } else {
105 return fmt("?r=%s&p=%s&%s", reponame, pagename, query);
106 }
107}
108
109static int cgit_print_branch_cb(const char *refname, const unsigned char *sha1,
110 int flags, void *cb_data)
111{
112 struct commit *commit;
113 char buf[256], *url;
114
115 commit = lookup_commit(sha1);
116 if (commit && !parse_commit(commit)){
117 html("<tr><td>");
118 url = cgit_pageurl(cgit_query_repo, "log",
119 fmt("h=%s", refname));
120 html_link_open(url, NULL, NULL);
121 strncpy(buf, refname, sizeof(buf));
122 html_txt(buf);
123 html_link_close();
124 html("</td><td>");
125 pretty_print_commit(CMIT_FMT_ONELINE, commit, ~0, buf,
126 sizeof(buf), 0, NULL, NULL, 0);
127 html_txt(buf);
128 html("</td></tr>\n");
129 } else {
130 html("<tr><td>");
131 html_txt(buf);
132 html("</td><td>");
133 htmlf("*** bad ref %s", sha1_to_hex(sha1));
134 html("</td></tr>\n");
135 }
136 return 0;
137}
138
139static void cgit_print_docstart(char *title)
140{
141 html("Content-Type: text/html; charset=utf-8\n");
142 html("\n");
143 html(cgit_doctype);
144 html("<html>\n");
145 html("<head>\n");
146 html("<title>");
147 html_txt(title);
148 html("</title>\n");
149 html("<link rel='stylesheet' type='text/css' href='");
150 html_attr(cgit_css);
151 html("'/>\n");
152 html("</head>\n");
153 html("<body>\n");
154}
155
156static void cgit_print_docend()
157{
158 html("</body>\n</html>\n");
159}
160
161static void cgit_print_pageheader(char *title)
162{
163 html("<div id='header'>");
164 htmlf("<a href='%s'>", cgit_logo_link);
165 htmlf("<img id='logo' src='%s'/>\n", cgit_logo);
166 htmlf("</a>");
167 html_txt(title);
168 html("</div>");
169}
170
171static void cgit_print_repolist()
172{
173 DIR *d;
174 struct dirent *de;
175 struct stat st;
176 char *name;
177
178 cgit_print_docstart(cgit_root_title);
179 cgit_print_pageheader(cgit_root_title);
180
181 if (!(d = opendir("."))) {
182 htmlf(cgit_lib_error, "Unable to scan repository directory",
183 strerror(errno));
184 cgit_print_docend();
185 return;
186 }
187
188 html("<h2>Repositories</h2>\n");
189 html("<table class='list'>");
190 html("<tr><th>Name</th><th>Description</th><th>Owner</th></tr>\n");
191 while ((de = readdir(d)) != NULL) {
192 if (de->d_name[0] == '.')
193 continue;
194 if (stat(de->d_name, &st) < 0)
195 continue;
196 if (!S_ISDIR(st.st_mode))
197 continue;
198
199 cgit_repo_name = cgit_repo_desc = cgit_repo_owner = NULL;
200 name = fmt("%s/.git/info/cgit", de->d_name);
201 if (cgit_read_config(name, cgit_repo_config_cb))
202 continue;
203
204 html("<tr><td>");
205 html_link_open(cgit_repourl(de->d_name), NULL, NULL);
206 html_txt(cgit_repo_name);
207 html_link_close();
208 html("</td><td>");
209 html_txt(cgit_repo_desc);
210 html("</td><td>");
211 html_txt(cgit_repo_owner);
212 html("</td></tr>\n");
213 }
214 closedir(d);
215 html("</table>");
216 cgit_print_docend();
217}
218
219static void cgit_print_branches()
220{
221 html("<table class='list'>");
222 html("<tr><th>Branch name</th><th>Head commit</th></tr>\n");
223 for_each_branch_ref(cgit_print_branch_cb, NULL);
224 html("</table>");
225}
226
227static int get_one_line(char *txt)
228{
229 char *t;
230
231 for(t=txt; *t != '\n' && t != '\0'; t++)
232 ;
233 *t = '\0';
234 return t-txt-1;
235}
236
237static void cgit_print_commit_shortlog(struct commit *commit)
238{
239 char *h, *t, *p;
240 char *tree = NULL, *author = NULL, *subject = NULL;
241 int len;
242 time_t sec;
243 struct tm *time;
244 char buf[32];
245
246 h = t = commit->buffer;
247
248 if (strncmp(h, "tree ", 5))
249 die("Bad commit format: %s",
250 sha1_to_hex(commit->object.sha1));
251
252 len = get_one_line(h);
253 tree = h+5;
254 h += len + 2;
255
256 while (!strncmp(h, "parent ", 7))
257 h += get_one_line(h) + 2;
258
259 if (!strncmp(h, "author ", 7)) {
260 author = h+7;
261 h += get_one_line(h) + 2;
262 t = author;
263 while(t!=h && *t!='<')
264 t++;
265 *t='\0';
266 p = t;
267 while(--t!=author && *t==' ')
268 *t='\0';
269 while(++p!=h && *p!='>')
270 ;
271 while(++p!=h && !isdigit(*p))
272 ;
273
274 t = p;
275 while(++p && isdigit(*p))
276 ;
277 *p = '\0';
278 sec = atoi(t);
279 time = gmtime(&sec);
280 }
281
282 while((len = get_one_line(h)) > 0)
283 h += len+2;
284
285 h++;
286 len = get_one_line(h);
287
288 subject = h;
289
290 html("<tr><td>");
291 strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", time);
292 html_txt(buf);
293 html("</td><td>");
294 char *qry = fmt("h=%s", sha1_to_hex(commit->object.sha1));
295 char *url = cgit_pageurl(cgit_query_repo, "view", qry);
296 html_link_open(url, NULL, NULL);
297 html_txt(subject);
298 html_link_close();
299 html("</td><td>");
300 html_txt(author);
301 html("</td></tr>\n");
302}
303
304static void cgit_print_log(const char *tip, int ofs, int cnt)
305{
306 struct rev_info rev;
307 struct commit *commit;
308 const char *argv[2] = {NULL, tip};
309 int n = 0;
310
311 init_revisions(&rev, NULL);
312 rev.abbrev = DEFAULT_ABBREV;
313 rev.commit_format = CMIT_FMT_DEFAULT;
314 rev.verbose_header = 1;
315 rev.show_root_diff = 0;
316 setup_revisions(2, argv, &rev, NULL);
317 prepare_revision_walk(&rev);
318
319 html("<h2>Log</h2>");
320 html("<table class='list'>");
321 html("<tr><th>Date</th><th>Message</th><th>Author</th></tr>\n");
322 while ((commit = get_revision(&rev)) != NULL && n++ < 100) {
323 cgit_print_commit_shortlog(commit);
324 free(commit->buffer);
325 commit->buffer = NULL;
326 free_commit_list(commit->parents);
327 commit->parents = NULL;
328 }
329 html("</table>\n");
330}
331
332static void cgit_print_repo_summary()
333{
334 html("<h2>");
335 html_txt("Repo summary page");
336 html("</h2>");
337 cgit_print_branches();
338}
339
340static void cgit_print_object(char *hex)
341{
342 unsigned char sha1[20];
343 //struct object *object;
344 char type[20];
345 unsigned char *buf;
346 unsigned long size;
347
348 if (get_sha1_hex(hex, sha1)){
349 htmlf(cgit_error, "Bad hex value");
350 return;
351 }
352
353 if (sha1_object_info(sha1, type, NULL)){
354 htmlf(cgit_error, "Bad object name");
355 return;
356 }
357
358 buf = read_sha1_file(sha1, type, &size);
359 if (!buf) {
360 htmlf(cgit_error, "Error reading object");
361 return;
362 }
363
364 buf[size] = '\0';
365 html("<h2>Object view</h2>");
366 htmlf("sha1=%s<br/>type=%s<br/>size=%i<br/>", hex, type, size);
367 html("<pre>");
368 html_txt(buf);
369 html("</pre>");
370}
371
372static void cgit_print_repo_page()
373{
374 if (chdir(cgit_query_repo) ||
375 cgit_read_config(".git/info/cgit", cgit_repo_config_cb)) {
376 char *title = fmt("%s - %s", cgit_root_title, "Bad request");
377 cgit_print_docstart(title);
378 cgit_print_pageheader(title);
379 htmlf(cgit_lib_error, "Unable to scan repository",
380 strerror(errno));
381 cgit_print_docend();
382 return;
383 }
384
385 char *title = fmt("%s - %s", cgit_repo_name, cgit_repo_desc);
386 cgit_print_docstart(title);
387 cgit_print_pageheader(title);
388 if (!cgit_query_page)
389 cgit_print_repo_summary();
390 else if (!strcmp(cgit_query_page, "log")) {
391 cgit_print_log(cgit_query_head, 0, 100);
392 } else if (!strcmp(cgit_query_page, "view")) {
393 cgit_print_object(cgit_query_head);
394 }
395 cgit_print_docend();
396}
397
398int main(int argc, const char **argv)
399{
400 if (cgit_read_config("/etc/cgitrc", cgit_global_config_cb))
401 die("Error reading config: %d %s", errno, strerror(errno));
402
403 chdir(cgit_root);
404 cgit_parse_query(getenv("QUERY_STRING"), cgit_querystring_cb);
405 if (cgit_query_repo)
406 cgit_print_repo_page();
407 else
408 cgit_print_repolist();
409 return 0;
410}
diff --git a/cgit.css b/cgit.css
new file mode 100644
index 0000000..3ed0c22
--- /dev/null
+++ b/cgit.css
@@ -0,0 +1,63 @@
1body {
2 font-family: arial;
3 font-size: normal;
4 background: white;
5 padding: 0em;
6 margin: 0.5em;
7}
8
9
10h2 {
11 font-size: normal;
12 font-weight: bold;
13 margin-bottom: 0.1em;
14}
15
16
17table.list {
18 border: solid 1px black;
19 border-collapse: collapse;
20 border: solid 1px #aaa;
21}
22
23table.list th {
24 text-align: left;
25 font-weight: bold;
26 background: #ddd;
27 border-bottom: solid 1px #aaa;
28 padding: 0.1em 0.5em 0.1em;
29 vertical-align: baseline;
30}
31table.list td {
32 border: none;
33 padding: 0.1em 0.5em;
34 background: white;
35}
36
37img {
38 border: none;
39}
40
41
42div#header {
43 background-color: #ddd;
44 padding: 0.25em 0.25em 0.25em 0.5em;
45 font-size: 150%;
46 font-weight: bold;
47 border: solid 1px #aaa;
48 vertical-align: middle;
49}
50
51div#header img#logo {
52 float: right;
53}
54
55div#content {
56 margin: 0.5em 0.5em;
57}
58
59div.error {
60 color: red;
61 font-weight: bold;
62 margin: 1em 2em;
63} \ No newline at end of file
diff --git a/cgit.h b/cgit.h
new file mode 100644
index 0000000..19f7ba7
--- /dev/null
+++ b/cgit.h
@@ -0,0 +1,21 @@
1#ifndef CGIT_H
2#define CGIT_H
3
4#include "git.h"
5#include <openssl/sha.h>
6
7extern char *fmt(const char *format,...);
8
9extern void html(const char *txt);
10extern void htmlf(const char *format,...);
11extern void html_txt(char *txt);
12extern void html_attr(char *txt);
13
14extern void html_link_open(char *url, char *title, char *class);
15extern void html_link_close(void);
16
17typedef void (*configfn)(const char *name, const char *value);
18
19extern int cgit_read_config(const char *filename, configfn fn);
20
21#endif /* CGIT_H */
diff --git a/config.c b/config.c
new file mode 100644
index 0000000..858ab69
--- /dev/null
+++ b/config.c
@@ -0,0 +1,73 @@
1#include "cgit.h"
2
3int next_char(FILE *f)
4{
5 int c = fgetc(f);
6 if (c=='\r') {
7 c = fgetc(f);
8 if (c!='\n') {
9 ungetc(c, f);
10 c = '\r';
11 }
12 }
13 return c;
14}
15
16void skip_line(FILE *f)
17{
18 int c;
19
20 while((c=next_char(f)) && c!='\n' && c!=EOF)
21 ;
22}
23
24int read_config_line(FILE *f, char *line, const char **value, int bufsize)
25{
26 int i = 0, isname = 0;
27
28 *value = NULL;
29 while(i<bufsize-1) {
30 int c = next_char(f);
31 if (!isname && (c=='#' || c==';')) {
32 skip_line(f);
33 continue;
34 }
35 if (!isname && isblank(c))
36 continue;
37
38 if (c=='=' && !*value) {
39 line[i] = 0;
40 *value = &line[i+1];
41 } else if (c=='\n' && !isname) {
42 i = 0;
43 continue;
44 } else if (c=='\n' || c==EOF) {
45 line[i] = 0;
46 break;
47 } else {
48 line[i]=c;
49 }
50 isname = 1;
51 i++;
52 }
53 line[i+1] = 0;
54 return i;
55}
56
57int cgit_read_config(const char *filename, configfn fn)
58{
59 int ret = 0, len;
60 char line[256];
61 const char *value;
62 FILE *f = fopen(filename, "r");
63
64 if (!f)
65 return -1;
66
67 while(len = read_config_line(f, line, &value, sizeof(line)))
68 (*fn)(line, value);
69
70 fclose(f);
71 return ret;
72}
73
diff --git a/git.h b/git.h
new file mode 100644
index 0000000..443f216
--- /dev/null
+++ b/git.h
@@ -0,0 +1,399 @@
1#ifndef GIT_H
2#define GIT_H
3
4
5/*
6 * from git:git-compat-util.h
7 */
8
9
10#ifndef FLEX_ARRAY
11#if defined(__GNUC__) && (__GNUC__ < 3)
12#define FLEX_ARRAY 0
13#else
14#define FLEX_ARRAY /* empty */
15#endif
16#endif
17
18
19#include <unistd.h>
20#include <stdio.h>
21#include <sys/stat.h>
22#include <fcntl.h>
23#include <stddef.h>
24#include <stdlib.h>
25#include <stdarg.h>
26#include <string.h>
27#include <errno.h>
28#include <limits.h>
29#include <sys/param.h>
30#include <netinet/in.h>
31#include <sys/types.h>
32#include <dirent.h>
33#include <time.h>
34
35
36static inline char* xstrdup(const char *str)
37{
38 char *ret = strdup(str);
39 if (!ret)
40 die("Out of memory, strdup failed");
41 return ret;
42}
43
44static inline void *xmalloc(size_t size)
45{
46 void *ret = malloc(size);
47 if (!ret && !size)
48 ret = malloc(1);
49 if (!ret)
50 die("Out of memory, malloc failed");
51#ifdef XMALLOC_POISON
52 memset(ret, 0xA5, size);
53#endif
54 return ret;
55}
56
57static inline void *xrealloc(void *ptr, size_t size)
58{
59 void *ret = realloc(ptr, size);
60 if (!ret && !size)
61 ret = realloc(ptr, 1);
62 if (!ret)
63 die("Out of memory, realloc failed");
64 return ret;
65}
66
67static inline void *xcalloc(size_t nmemb, size_t size)
68{
69 void *ret = calloc(nmemb, size);
70 if (!ret && (!nmemb || !size))
71 ret = calloc(1, 1);
72 if (!ret)
73 die("Out of memory, calloc failed");
74 return ret;
75}
76
77static inline ssize_t xread(int fd, void *buf, size_t len)
78{
79 ssize_t nr;
80 while (1) {
81 nr = read(fd, buf, len);
82 if ((nr < 0) && (errno == EAGAIN || errno == EINTR))
83 continue;
84 return nr;
85 }
86}
87
88static inline ssize_t xwrite(int fd, const void *buf, size_t len)
89{
90 ssize_t nr;
91 while (1) {
92 nr = write(fd, buf, len);
93 if ((nr < 0) && (errno == EAGAIN || errno == EINTR))
94 continue;
95 return nr;
96 }
97}
98
99
100
101
102/*
103 * from git:cache.h
104 */
105
106
107/* Convert to/from hex/sha1 representation */
108#define MINIMUM_ABBREV 4
109#define DEFAULT_ABBREV 7
110
111
112extern void * read_sha1_file(const unsigned char *sha1, char *type, unsigned long *size);
113
114
115
116
117/*
118 * from git:object.h
119 */
120
121struct object_list {
122 struct object *item;
123 struct object_list *next;
124};
125
126struct object_refs {
127 unsigned count;
128 struct object *base;
129 struct object *ref[FLEX_ARRAY]; /* more */
130};
131
132struct object_array {
133 unsigned int nr;
134 unsigned int alloc;
135 struct object_array_entry {
136 struct object *item;
137 const char *name;
138 } *objects;
139};
140
141#define TYPE_BITS 3
142#define FLAG_BITS 27
143
144/*