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Simplify the definition of http_uri_redirect such that only one allocation is

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done for exactly how much memory is needed.  This was suggested by Luigi on
the asterisk-dev mailing list.  Thanks!


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@48933 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Russell Bryant
2006-12-24 03:29:42 +00:00
parent 0e266fbfb9
commit 5d5cc243c6
1 changed files with 15 additions and 23 deletions
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38
main/http.c
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@@ -126,11 +126,9 @@ static struct {
};
struct http_uri_redirect {
AST_DECLARE_STRING_FIELDS(
AST_STRING_FIELD(target);
AST_STRING_FIELD(dest);
);
AST_LIST_ENTRY(http_uri_redirect) entry;
char *dest;
char target[0];
};
static AST_LIST_HEAD_STATIC(uri_redirects, http_uri_redirect);
@@ -815,7 +813,8 @@ static void add_redirect(const char *value)
{
char *target, *dest;
struct http_uri_redirect *redirect, *cur;
unsigned int len;
unsigned int target_len;
unsigned int total_len;
dest = ast_strdupa(value);
target = strsep(&dest, "=");
@@ -825,22 +824,21 @@ static void add_redirect(const char *value)
return;
}
if (!(redirect = ast_calloc(1, sizeof(*redirect))))
target_len = strlen(target) + 1;
total_len = sizeof(*redirect) + target_len + strlen(dest) + 1;
if (!(redirect = ast_calloc(1, total_len)))
return;
if (ast_string_field_init(redirect, 32)) {
free(redirect);
return;
}
ast_string_field_set(redirect, target, target);
ast_string_field_set(redirect, dest, dest);
redirect->dest = redirect->target + target_len;
strcpy(redirect->target, target);
strcpy(redirect->dest, dest);
AST_LIST_LOCK(&uri_redirects);
len = strlen(target);
target_len--; /* So we can compare directly with strlen() */
if ( AST_LIST_EMPTY(&uri_redirects)
|| strlen(AST_LIST_FIRST(&uri_redirects)->target) <= len ) {
|| strlen(AST_LIST_FIRST(&uri_redirects)->target) <= target_len ) {
AST_LIST_INSERT_HEAD(&uri_redirects, redirect, entry);
AST_LIST_UNLOCK(&uri_redirects);
return;
@@ -848,7 +846,7 @@ static void add_redirect(const char *value)
AST_LIST_TRAVERSE(&uri_redirects, cur, entry) {
if ( AST_LIST_NEXT(cur, entry)
&& strlen(AST_LIST_NEXT(cur, entry)->target) <= len ) {
&& strlen(AST_LIST_NEXT(cur, entry)->target) <= target_len ) {
AST_LIST_INSERT_AFTER(&uri_redirects, cur, redirect, entry);
AST_LIST_UNLOCK(&uri_redirects);
return;
@@ -860,12 +858,6 @@ static void add_redirect(const char *value)
AST_LIST_UNLOCK(&uri_redirects);
}
static void destroy_redirect(struct http_uri_redirect *redirect)
{
ast_string_field_free_all(redirect);
free(redirect);
}
static int __ast_http_load(int reload)
{
struct ast_config *cfg;
@@ -896,7 +888,7 @@ static int __ast_http_load(int reload)
AST_LIST_LOCK(&uri_redirects);
while ((redirect = AST_LIST_REMOVE_HEAD(&uri_redirects, entry)))
destroy_redirect(redirect);
free(redirect);
AST_LIST_UNLOCK(&uri_redirects);
cfg = ast_config_load("http.conf");