summaryrefslogtreecommitdiffabout
path: root/cache.c
Unidiff
Diffstat (limited to 'cache.c') (more/less context) (show whitespace changes)
-rw-r--r--cache.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/cache.c b/cache.c
index 2ed0d6f..7860fc7 100644
--- a/cache.c
+++ b/cache.c
@@ -3,108 +3,108 @@
3 * Copyright (C) 2006 Lars Hjemli 3 * Copyright (C) 2006 Lars Hjemli
4 * 4 *
5 * Licensed under GNU General Public License v2 5 * Licensed under GNU General Public License v2
6 * (see COPYING for full license text) 6 * (see COPYING for full license text)
7 */ 7 */
8 8
9#include "cgit.h" 9#include "cgit.h"
10 10
11const int NOLOCK = -1; 11const int NOLOCK = -1;
12 12
13char *cache_safe_filename(const char *unsafe) 13char *cache_safe_filename(const char *unsafe)
14{ 14{
15 static char buf[4][PATH_MAX]; 15 static char buf[4][PATH_MAX];
16 static int bufidx; 16 static int bufidx;
17 char *s; 17 char *s;
18 char c; 18 char c;
19 19
20 bufidx++; 20 bufidx++;
21 bufidx &= 3; 21 bufidx &= 3;
22 s = buf[bufidx]; 22 s = buf[bufidx];
23 23
24 while(unsafe && (c = *unsafe++) != 0) { 24 while(unsafe && (c = *unsafe++) != 0) {
25 if (c == '/' || c == ' ' || c == '&' || c == '|' || 25 if (c == '/' || c == ' ' || c == '&' || c == '|' ||
26 c == '>' || c == '<' || c == '.') 26 c == '>' || c == '<' || c == '.')
27 c = '_'; 27 c = '_';
28 *s++ = c; 28 *s++ = c;
29 } 29 }
30 *s = '\0'; 30 *s = '\0';
31 return buf[bufidx]; 31 return buf[bufidx];
32} 32}
33 33
34int cache_exist(struct cacheitem *item) 34int cache_exist(struct cacheitem *item)
35{ 35{
36 if (stat(item->name, &item->st)) { 36 if (stat(item->name, &item->st)) {
37 item->st.st_mtime = 0; 37 item->st.st_mtime = 0;
38 return 0; 38 return 0;
39 } 39 }
40 return 1; 40 return 1;
41} 41}
42 42
43int cache_create_dirs() 43int cache_create_dirs()
44{ 44{
45 char *path; 45 char *path;
46 46
47 path = fmt("%s", ctx.cfg.cache_root); 47 path = fmt("%s", ctx.cfg.cache_root);
48 if (mkdir(path, S_IRWXU) && errno!=EEXIST) 48 if (mkdir(path, S_IRWXU) && errno!=EEXIST)
49 return 0; 49 return 0;
50 50
51 if (!cgit_repo) 51 if (!ctx.repo)
52 return 0; 52 return 0;
53 53
54 path = fmt("%s/%s", ctx.cfg.cache_root, 54 path = fmt("%s/%s", ctx.cfg.cache_root,
55 cache_safe_filename(cgit_repo->url)); 55 cache_safe_filename(ctx.repo->url));
56 56
57 if (mkdir(path, S_IRWXU) && errno!=EEXIST) 57 if (mkdir(path, S_IRWXU) && errno!=EEXIST)
58 return 0; 58 return 0;
59 59
60 if (ctx.qry.page) { 60 if (ctx.qry.page) {
61 path = fmt("%s/%s/%s", ctx.cfg.cache_root, 61 path = fmt("%s/%s/%s", ctx.cfg.cache_root,
62 cache_safe_filename(cgit_repo->url), 62 cache_safe_filename(ctx.repo->url),
63 ctx.qry.page); 63 ctx.qry.page);
64 if (mkdir(path, S_IRWXU) && errno!=EEXIST) 64 if (mkdir(path, S_IRWXU) && errno!=EEXIST)
65 return 0; 65 return 0;
66 } 66 }
67 return 1; 67 return 1;
68} 68}
69 69
70int cache_refill_overdue(const char *lockfile) 70int cache_refill_overdue(const char *lockfile)
71{ 71{
72 struct stat st; 72 struct stat st;
73 73
74 if (stat(lockfile, &st)) 74 if (stat(lockfile, &st))
75 return 0; 75 return 0;
76 else 76 else
77 return (time(NULL) - st.st_mtime > ctx.cfg.cache_max_create_time); 77 return (time(NULL) - st.st_mtime > ctx.cfg.cache_max_create_time);
78} 78}
79 79
80int cache_lock(struct cacheitem *item) 80int cache_lock(struct cacheitem *item)
81{ 81{
82 int i = 0; 82 int i = 0;
83 char *lockfile = xstrdup(fmt("%s.lock", item->name)); 83 char *lockfile = xstrdup(fmt("%s.lock", item->name));
84 84
85 top: 85 top:
86 if (++i > ctx.cfg.max_lock_attempts) 86 if (++i > ctx.cfg.max_lock_attempts)
87 die("cache_lock: unable to lock %s: %s", 87 die("cache_lock: unable to lock %s: %s",
88 item->name, strerror(errno)); 88 item->name, strerror(errno));
89 89
90 item->fd = open(lockfile, O_WRONLY|O_CREAT|O_EXCL, S_IRUSR|S_IWUSR); 90 item->fd = open(lockfile, O_WRONLY|O_CREAT|O_EXCL, S_IRUSR|S_IWUSR);
91 91
92 if (item->fd == NOLOCK && errno == ENOENT && cache_create_dirs()) 92 if (item->fd == NOLOCK && errno == ENOENT && cache_create_dirs())
93 goto top; 93 goto top;
94 94
95 if (item->fd == NOLOCK && errno == EEXIST && 95 if (item->fd == NOLOCK && errno == EEXIST &&
96 cache_refill_overdue(lockfile) && !unlink(lockfile)) 96 cache_refill_overdue(lockfile) && !unlink(lockfile))
97 goto top; 97 goto top;
98 98
99 free(lockfile); 99 free(lockfile);
100 return (item->fd > 0); 100 return (item->fd > 0);
101} 101}
102 102
103int cache_unlock(struct cacheitem *item) 103int cache_unlock(struct cacheitem *item)
104{ 104{
105 close(item->fd); 105 close(item->fd);
106 return (rename(fmt("%s.lock", item->name), item->name) == 0); 106 return (rename(fmt("%s.lock", item->name), item->name) == 0);
107} 107}
108 108
109int cache_cancel_lock(struct cacheitem *item) 109int cache_cancel_lock(struct cacheitem *item)
110{ 110{