summaryrefslogtreecommitdiffstatshomepage
path: root/ui-summary.c
blob: b99ea9840e6c2cece046a336f0f077d073fb9122 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
/* ui-summary.c: functions for generating repo summary page
 *
 * Copyright (C) 2006 Lars Hjemli
 *
 * Licensed under GNU General Public License v2
 *   (see COPYING for full license text)
 */

#include "cgit.h"

static int header;

static int cgit_print_branch_cb(const char *refname, const unsigned char *sha1,
				int flags, void *cb_data)
{
	struct commit *commit;
	struct commitinfo *info;
	char buf[256], *url;

	strncpy(buf, refname, sizeof(buf));
	commit = lookup_commit(sha1);
	if (commit && !parse_commit(commit)){
		info = cgit_parse_commit(commit);
		html("<tr><td>");
		url = cgit_pageurl(cgit_query_repo, "log",
				   fmt("h=%s", refname));
		html_link_open(url, NULL, NULL);
		html_txt(buf);
		html_link_close();
		html("</td><td>");
		cgit_print_date(commit->date);
		html("</td><td>");
		html_txt(info->author);
		html("</td><td>");
		url = cgit_pageurl(cgit_query_repo, "commit",
				   fmt("id=%s", sha1_to_hex(sha1)));
		html_link_open(url, NULL, NULL);
		html_ntxt(cgit_max_msg_len, info->subject);
		html_link_close();
		html("</td></tr>\n");
		cgit_free_commitinfo(info);
	} else {
		html("<tr><td>");
		html_txt(buf);
		html("</td><td colspan='3'>");
		htmlf("*** bad ref %s ***", sha1_to_hex(sha1));
		html("</td></tr>\n");
	}
	return 0;
}


static void cgit_print_object_ref(struct object *obj)
{
	char *page, *url;

	if (obj->type == OBJ_COMMIT)
		page = "commit";
	else if (obj->type == OBJ_TREE)
		page = "tree";
	else
		page = "view";

	url = cgit_pageurl(cgit_query_repo, page,
			   fmt("id=%s", sha1_to_hex(obj->sha1)));
	html_link_open(url, NULL, NULL);
	htmlf("%s %s", typename(obj->type),
	      sha1_to_hex(obj->sha1));
	html_link_close();
}

static void print_tag_header()
{
	html("<tr class='nohover'><th class='left'>Tag</th>"
	     "<th class='left'>Created</th>"
	     "<th class='left'>Author</th>"
	     "<th class='left'>Reference</th></tr>\n");
	header = 1;
}

static int cgit_print_tag_cb(const char *refname, const unsigned char *sha1,
				int flags, void *cb_data)
{
	struct tag *tag;
	struct taginfo *info;
	struct object *obj;
	char buf[256], *url;

	strncpy(buf, refname, sizeof(buf));
	obj = parse_object(sha1);
	if (!obj)
		return 1;
	if (obj->type == OBJ_TAG) {
		tag = lookup_tag(sha1);
		if (!tag || parse_tag(tag) || !(info = cgit_parse_tag(tag)))
			return 2;
		if (!header)
			print_tag_header();
		html("<tr><td>");
		url = cgit_pageurl(cgit_query_repo, "view",
				   fmt("id=%s", sha1_to_hex(sha1)));
		html_link_open(url, NULL, NULL);
		html_txt(buf);
		html_link_close();
		html("</td><td>");
		if (info->tagger_date > 0)
			cgit_print_date(info->tagger_date);
		html("</td><td>");
		if (info->tagger)
			html(info->tagger);
		html("</td><td>");
		cgit_print_object_ref(tag->tagged);
		html("</td></tr>\n");
	} else {
		if (!header)
			print_tag_header();
		html("<tr><td>");
		html_txt(buf);
		html("</td><td colspan='2'/><td>");
		cgit_print_object_ref(obj);
		html("</td></tr>\n");
	}
	return 0;
}

static int cgit_print_archive_cb(const char *refname, const unsigned char *sha1,
				 int flags, void *cb_data)
{
	struct tag *tag;
	struct taginfo *info;
	struct object *obj;
	char buf[256], *url;
	unsigned char fileid[20];

	if (prefixcmp(refname, "refs/archives"))
		return 0;
	strncpy(buf, refname+14, sizeof(buf));
	obj = parse_object(sha1);
	if (!obj)
		return 1;
	if (obj->type == OBJ_TAG) {
		tag = lookup_tag(sha1);
		if (!tag || parse_tag(tag) || !(info = cgit_parse_tag(tag)))
			return 0;
		hashcpy(fileid, tag->tagged->sha1);
	} else if (obj->type != OBJ_BLOB) {
		return 0;
	} else {
		hashcpy(fileid, sha1);
	}
	if (!header) {
		html("<table>");
		html("<tr><th>Downloads</th></tr>");
		header = 1;
	}
	html("<tr><td>");
	url = cgit_pageurl(cgit_query_repo, "blob",
			   fmt("id=%s&path=%s", sha1_to_hex(fileid),
			       buf));
	html_link_open(url, NULL, NULL);
	html_txt(buf);
	html_link_close();
	html("</td><tr>");
	return 0;
}

static void cgit_print_branches()
{
	html("<tr class='nohover'><th class='left'>Branch</th>"
	     "<th class='left'>Updated</th>"
	     "<th class='left'>Author</th>"
	     "<th class='left'>Head commit</th></tr>\n");
	for_each_branch_ref(cgit_print_branch_cb, NULL);
}

static void cgit_print_tags()
{
	header = 0;
	for_each_tag_ref(cgit_print_tag_cb, NULL);
}

static void cgit_print_archives()
{
	header = 0;
	for_each_ref(cgit_print_archive_cb, NULL);
	if (header)
		html("</table>");
}

void cgit_print_summary()
{
	html("<table class='list nowrap'>");
	html("<tr class='nohover'><td id='summary' colspan='3'>");
	html("<h2>");
	html_txt(cgit_repo->name);
	html(" - ");
	html_txt(cgit_repo->desc);
	html("</h2>");
	html("</td><td id='archivelist'>");
	cgit_print_archives();
	html("</td></tr>");
	cgit_print_branches();
	html("<tr class='nohover'><td colspan='4'>&nbsp;</td></tr>");
	cgit_print_tags();
	html("</table>");
}
k">if (dup2(slot->lock_fd, STDOUT_FILENO) == -1) return errno; /* Generate cache content */ slot->fn(slot->cbdata); /* Restore stdout */ if (dup2(tmp, STDOUT_FILENO) == -1) return errno; /* Close the temporary filedescriptor */ if (close(tmp)) return errno; return 0; } /* Crude implementation of 32-bit FNV-1 hash algorithm, * see http://www.isthe.com/chongo/tech/comp/fnv/ for details * about the magic numbers. */ #define FNV_OFFSET 0x811c9dc5 #define FNV_PRIME 0x01000193 unsigned long hash_str(const char *str) { unsigned long h = FNV_OFFSET; unsigned char *s = (unsigned char *)str; if (!s) return h; while (*s) { h *= FNV_PRIME; h ^= *s++; } return h; } static int process_slot(struct cache_slot *slot) { int err; err = open_slot(slot); if (!err && slot->match) { if (is_expired(slot)) { if (!lock_slot(slot)) { /* If the cachefile has been replaced between * `open_slot` and `lock_slot`, we'll just * serve the stale content from the original * cachefile. This way we avoid pruning the * newly generated slot. The same code-path * is chosen if fill_slot() fails for some * reason. * * TODO? check if the new slot contains the * same key as the old one, since we would * prefer to serve the newest content. * This will require us to open yet another * file-descriptor and read and compare the * key from the new file, so for now we're * lazy and just ignore the new file. */ if (is_modified(slot) || fill_slot(slot)) { unlock_slot(slot, 0); close_lock(slot); } else { close_slot(slot); unlock_slot(slot, 1); slot->cache_fd = slot->lock_fd; } } } if ((err = print_slot(slot)) != 0) { cache_log("[cgit] error printing cache %s: %s (%d)\n", slot->cache_name, strerror(err), err); } close_slot(slot); return err; } /* If the cache slot does not exist (or its key doesn't match the * current key), lets try to create a new cache slot for this * request. If this fails (for whatever reason), lets just generate * the content without caching it and fool the caller to belive * everything worked out (but print a warning on stdout). */ close_slot(slot); if ((err = lock_slot(slot)) != 0) { cache_log("[cgit] Unable to lock slot %s: %s (%d)\n", slot->lock_name, strerror(err), err); slot->fn(slot->cbdata); return 0; } if ((err = fill_slot(slot)) != 0) { cache_log("[cgit] Unable to fill slot %s: %s (%d)\n", slot->lock_name, strerror(err), err); unlock_slot(slot, 0); close_lock(slot); slot->fn(slot->cbdata); return 0; } // We've got a valid cache slot in the lock file, which // is about to replace the old cache slot. But if we // release the lockfile and then try to open the new cache // slot, we might get a race condition with a concurrent // writer for the same cache slot (with a different key). // Lets avoid such a race by just printing the content of // the lock file. slot->cache_fd = slot->lock_fd; unlock_slot(slot, 1); if ((err = print_slot(slot)) != 0) { cache_log("[cgit] error printing cache %s: %s (%d)\n", slot->cache_name, strerror(err), err); } close_slot(slot); return err; } /* Print cached content to stdout, generate the content if necessary. */ int cache_process(int size, const char *path, const char *key, int ttl, cache_fill_fn fn, void *cbdata) { unsigned long hash; int i; struct strbuf filename = STRBUF_INIT; struct strbuf lockname = STRBUF_INIT; struct cache_slot slot; int result; /* If the cache is disabled, just generate the content */ if (size <= 0) { fn(cbdata); return 0; } /* Verify input, calculate filenames */ if (!path) { cache_log("[cgit] Cache path not specified, caching is disabled\n"); fn(cbdata); return 0; } if (!key) key = ""; hash = hash_str(key) % size; strbuf_addstr(&filename, path); strbuf_ensure_end(&filename, '/'); for (i = 0; i < 8; i++) { strbuf_addf(&filename, "%x", (unsigned char)(hash & 0xf)); hash >>= 4; } strbuf_addbuf(&lockname, &filename); strbuf_addstr(&lockname, ".lock"); slot.fn = fn; slot.cbdata = cbdata; slot.ttl = ttl; slot.cache_name = filename.buf; slot.lock_name = lockname.buf; slot.key = key; slot.keylen = strlen(key); result = process_slot(&slot); strbuf_release(&filename); strbuf_release(&lockname); return result; } /* Return a strftime formatted date/time * NB: the result from this function is to shared memory */ static char *sprintftime(const char *format, time_t time) { static char buf[64]; struct tm *tm; if (!time) return NULL; tm = gmtime(&time); strftime(buf, sizeof(buf)-1, format, tm); return buf; } int cache_ls(const char *path) { DIR *dir; struct dirent *ent; int err = 0; struct cache_slot slot; struct strbuf fullname = STRBUF_INIT; size_t prefixlen; if (!path) { cache_log("[cgit] cache path not specified\n"); return -1; } dir = opendir(path); if (!dir) { err = errno; cache_log("[cgit] unable to open path %s: %s (%d)\n", path, strerror(err), err); return err; } strbuf_addstr(&fullname, path); strbuf_ensure_end(&fullname, '/'); prefixlen = fullname.len; while ((ent = readdir(dir)) != NULL) { if (strlen(ent->d_name) != 8) continue; strbuf_setlen(&fullname, prefixlen); strbuf_addstr(&fullname, ent->d_name); slot.cache_name = fullname.buf; if ((err = open_slot(&slot)) != 0) { cache_log("[cgit] unable to open path %s: %s (%d)\n", fullname.buf, strerror(err), err); continue; } htmlf("%s %s %10"PRIuMAX" %s\n", fullname.buf, sprintftime("%Y-%m-%d %H:%M:%S", slot.cache_st.st_mtime), (uintmax_t)slot.cache_st.st_size, slot.buf); close_slot(&slot); } closedir(dir); strbuf_release(&fullname); return 0; } /* Print a message to stdout */ void cache_log(const char *format, ...) { va_list args; va_start(args, format); vfprintf(stderr, format, args); va_end(args); }