Instead use "struct strbuf" from Git to remove the limit on file path
length.
Signed-off-by: John Keeping <j...@keeping.me.uk>
---
Changes since v1:
- Reset the buffer length before appending each filename to the base
path.
cache.c | 57 ++++++++++++++++++++-------------------------------------
1 file changed, 20 insertions(+), 37 deletions(-)
diff --git a/cache.c b/cache.c
index 3127fc2..c1d777b 100644
--- a/cache.c
+++ b/cache.c
@@ -312,9 +312,9 @@ int cache_process(int size, const char *path, const char
*key, int ttl,
cache_fill_fn fn, void *cbdata)
{
unsigned long hash;
- int len, i;
- char filename[1024];
- char lockname[1024 + 5]; /* 5 = ".lock" */
+ int i;
+ struct strbuf filename = STRBUF_INIT;
+ struct strbuf lockname = STRBUF_INIT;
struct cache_slot slot;
/* If the cache is disabled, just generate the content */
@@ -329,32 +329,22 @@ int cache_process(int size, const char *path, const char
*key, int ttl,
fn(cbdata);
return 0;
}
- len = strlen(path);
- if (len > sizeof(filename) - 10) { /* 10 = "/01234567\0" */
- cache_log("[cgit] Cache path too long, caching is disabled:
%s\n",
- path);
- fn(cbdata);
- return 0;
- }
if (!key)
key = "";
hash = hash_str(key) % size;
- strcpy(filename, path);
- if (filename[len - 1] != '/')
- filename[len++] = '/';
+ strbuf_addstr(&filename, path);
+ strbuf_ensure_end(&filename, '/');
for (i = 0; i < 8; i++) {
- sprintf(filename + len++, "%x",
- (unsigned char)(hash & 0xf));
+ strbuf_addf(&filename, "%x", (unsigned char)(hash & 0xf));
hash >>= 4;
}
- filename[len] = '\0';
- strcpy(lockname, filename);
- strcpy(lockname + len, ".lock");
+ strbuf_addbuf(&lockname, &filename);
+ strbuf_addstr(&lockname, ".lock");
slot.fn = fn;
slot.cbdata = cbdata;
slot.ttl = ttl;
- slot.cache_name = filename;
- slot.lock_name = lockname;
+ slot.cache_name = strbuf_detach(&filename, NULL);
+ slot.lock_name = strbuf_detach(&lockname, NULL);
slot.key = key;
slot.keylen = strlen(key);
return process_slot(&slot);
@@ -381,18 +371,13 @@ int cache_ls(const char *path)
struct dirent *ent;
int err = 0;
struct cache_slot slot;
- char fullname[1024];
- char *name;
+ struct strbuf fullname = STRBUF_INIT;
+ size_t prefixlen;
if (!path) {
cache_log("[cgit] cache path not specified\n");
return -1;
}
- if (strlen(path) > 1024 - 10) {
- cache_log("[cgit] cache path too long: %s\n",
- path);
- return -1;
- }
dir = opendir(path);
if (!dir) {
err = errno;
@@ -400,30 +385,28 @@ int cache_ls(const char *path)
path, strerror(err), err);
return err;
}
- strcpy(fullname, path);
- name = fullname + strlen(path);
- if (*(name - 1) != '/') {
- *name++ = '/';
- *name = '\0';
- }
- slot.cache_name = fullname;
+ strbuf_addstr(&fullname, path);
+ strbuf_ensure_end(&fullname, '/');
+ prefixlen = fullname.len;
while ((ent = readdir(dir)) != NULL) {
if (strlen(ent->d_name) != 8)
continue;
- strcpy(name, ent->d_name);
+ strbuf_setlen(&fullname, prefixlen);
+ strbuf_addstr(&fullname, ent->d_name);
if ((err = open_slot(&slot)) != 0) {
cache_log("[cgit] unable to open path %s: %s (%d)\n",
- fullname, strerror(err), err);
+ fullname.buf, strerror(err), err);
continue;
}
printf("%s %s %10"PRIuMAX" %s\n",
- name,
+ 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);
}
+ slot.cache_name = strbuf_detach(&fullname, NULL);
closedir(dir);
return 0;
}
--
1.8.2.692.g17a9715
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