summaryrefslogtreecommitdiff
path: root/networking
diff options
context:
space:
mode:
authorDenis Vlasenko2006-11-16 16:20:12 +0000
committerDenis Vlasenko2006-11-16 16:20:12 +0000
commitd4f3d1a4bd17dbcebf229ee72133e713d7632284 (patch)
tree12405969e6505bc22b3dd4fb2a7b0b90df29c0da /networking
parent0871bc89fbedc7d1a34feb7368fb8126956f58e5 (diff)
downloadbusybox-d4f3d1a4bd17dbcebf229ee72133e713d7632284.zip
busybox-d4f3d1a4bd17dbcebf229ee72133e713d7632284.tar.gz
httpd:
fix union aliasing bug symptom: wget of non-existent file gets redirected to /text/html/something on second and subsequend wget attempts fix double-free bug symptom: glibc caught double-free (we didn't NULL config->xxx ptrs after free)
Diffstat (limited to 'networking')
-rw-r--r--networking/httpd.c39
1 files changed, 17 insertions, 22 deletions
diff --git a/networking/httpd.c b/networking/httpd.c
index e125095..c0b740f 100644
--- a/networking/httpd.c
+++ b/networking/httpd.c
@@ -143,10 +143,8 @@ typedef struct {
#endif
unsigned port; /* server initial port and for
set env REMOTE_PORT */
- union HTTPD_FOUND {
- const char *found_mime_type;
- const char *found_moved_temporarily;
- } httpd_found;
+ const char *found_mime_type;
+ const char *found_moved_temporarily;
off_t ContentLength; /* -1 - unknown */
time_t last_mod;
@@ -857,7 +855,7 @@ static int sendHeaders(HttpResponseNum responseNum)
}
/* error message is HTML */
mime_type = responseNum == HTTP_OK ?
- config->httpd_found.found_mime_type : "text/html";
+ config->found_mime_type : "text/html";
/* emit the current date */
strftime(timeStr, sizeof(timeStr), RFC1123FMT, gmtime(&timer));
@@ -874,7 +872,7 @@ static int sendHeaders(HttpResponseNum responseNum)
#endif
if (responseNum == HTTP_MOVED_TEMPORARILY) {
len += sprintf(buf+len, "Location: %s/%s%s\r\n",
- config->httpd_found.found_moved_temporarily,
+ config->found_moved_temporarily,
(config->query ? "?" : ""),
(config->query ? config->query : ""));
}
@@ -894,7 +892,7 @@ static int sendHeaders(HttpResponseNum responseNum)
responseNum, responseString, infoString);
}
#if DEBUG
- fprintf(stderr, "Headers: '%s'", buf);
+ fprintf(stderr, "headers: '%s'\n", buf);
#endif
return full_write(config->accepted_socket, buf, len);
}
@@ -1246,14 +1244,14 @@ static int sendFile(const char *url)
break;
}
/* also, if not found, set default as "application/octet-stream"; */
- config->httpd_found.found_mime_type = *(table+1);
+ config->found_mime_type = table[1];
#if ENABLE_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES
if (suffix) {
Htaccess * cur;
for (cur = config->mime_a; cur; cur = cur->next) {
if (strcmp(cur->before_colon, suffix) == 0) {
- config->httpd_found.found_mime_type = cur->after_colon;
+ config->found_mime_type = cur->after_colon;
break;
}
}
@@ -1261,8 +1259,8 @@ static int sendFile(const char *url)
#endif /* CONFIG_FEATURE_HTTPD_CONFIG_WITH_MIME_TYPES */
#if DEBUG
- fprintf(stderr, "Sending file '%s' Content-type: %s\n",
- url, config->httpd_found.found_mime_type);
+ fprintf(stderr, "sending file '%s' content-type: %s\n",
+ url, config->found_mime_type);
#endif
f = open(url, O_RDONLY);
@@ -1278,7 +1276,7 @@ static int sendFile(const char *url)
close(f);
} else {
#if DEBUG
- bb_perror_msg("unable to open '%s'", url);
+ bb_perror_msg("cannot open '%s'", url);
#endif
sendHeaders(HTTP_NOT_FOUND);
}
@@ -1434,7 +1432,7 @@ static void handleIncoming(void)
int ip_allowed;
#if ENABLE_FEATURE_HTTPD_CGI
const char *prequest = request_GET;
- long length=0;
+ long length = 0;
char *cookie = 0;
char *content_type = 0;
#endif
@@ -1538,7 +1536,7 @@ BAD_REQUEST:
/* If URL is directory, adding '/' */
if (test[-1] != '/') {
if (is_directory(url + 1, 1, &sb)) {
- config->httpd_found.found_moved_temporarily = url;
+ config->found_moved_temporarily = url;
}
}
#if DEBUG
@@ -1628,12 +1626,10 @@ FORBIDDEN: /* protect listing /cgi-bin */
}
#endif
- if (config->httpd_found.found_moved_temporarily) {
+ if (config->found_moved_temporarily) {
sendHeaders(HTTP_MOVED_TEMPORARILY);
-#if DEBUG
/* clear unforked memory flag */
- config->httpd_found.found_moved_temporarily = NULL;
-#endif
+ config->found_moved_temporarily = NULL;
break;
}
@@ -1668,14 +1664,14 @@ FORBIDDEN: /* protect listing /cgi-bin */
} while (0);
# if DEBUG
- fprintf(stderr, "closing socket\n");
+ fprintf(stderr, "closing socket\n\n");
# endif
# if ENABLE_FEATURE_HTTPD_CGI
free(cookie);
free(content_type);
- free(config->referer);
+ free(config->referer); config->referer = NULL;
# if ENABLE_FEATURE_HTTPD_BASIC_AUTH
- free(config->remoteuser);
+ free(config->remoteuser); config->remoteuser = NULL;
# endif
# endif
shutdown(config->accepted_socket, SHUT_WR);
@@ -1733,7 +1729,6 @@ static int miniHttpd(int server)
s = accept(server, (struct sockaddr *)&fromAddr, &fromAddrLen);
if (s < 0)
continue;
-
config->accepted_socket = s;
config->rmt_ip = ntohl(fromAddr.sin_addr.s_addr);
#if ENABLE_FEATURE_HTTPD_CGI || DEBUG