[toolchain] uClibc: fix a crash in __read_etc_hosts_r() that occurs if more than...

[openwrt.git] / package / uhttpd / src / uhttpd.c

diff --git a/package/uhttpd/src/uhttpd.c b/package/uhttpd/src/uhttpd.c
index 2c7755f..50c3b32 100644 (file)
--- a/package/uhttpd/src/uhttpd.c
+++ b/package/uhttpd/src/uhttpd.c
@@ -127,9 +127,7 @@ static int uh_socket_bind(
        int status;
        int bound = 0;
 
-       int tcp_ka_idl = 1;
-       int tcp_ka_int = 1;
-       int tcp_ka_cnt = 3;
+       int tcp_ka_idl, tcp_ka_int, tcp_ka_cnt;
 
        struct listener *l = NULL;
        struct addrinfo *addrs = NULL, *p = NULL;
@@ -157,13 +155,20 @@ static int uh_socket_bind(
                }
 
                /* TCP keep-alive */
-               if( setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, &yes, sizeof(yes)) ||
-                   setsockopt(sock, SOL_TCP, TCP_KEEPIDLE,  &tcp_ka_idl, sizeof(tcp_ka_idl)) ||
-                   setsockopt(sock, SOL_TCP, TCP_KEEPINTVL, &tcp_ka_int, sizeof(tcp_ka_int)) ||
-                   setsockopt(sock, SOL_TCP, TCP_KEEPCNT,   &tcp_ka_cnt, sizeof(tcp_ka_cnt)) )
+               if( conf->tcp_keepalive > 0 )
                {
-                   fprintf(stderr, "Notice: Unable to enable TCP keep-alive: %s\n",
-                       strerror(errno));
+                       tcp_ka_idl = 1;
+                       tcp_ka_cnt = 3;
+                       tcp_ka_int = conf->tcp_keepalive;
+
+                       if( setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, &yes, sizeof(yes)) ||
+                           setsockopt(sock, SOL_TCP, TCP_KEEPIDLE,  &tcp_ka_idl, sizeof(tcp_ka_idl)) ||
+                           setsockopt(sock, SOL_TCP, TCP_KEEPINTVL, &tcp_ka_int, sizeof(tcp_ka_int)) ||
+                           setsockopt(sock, SOL_TCP, TCP_KEEPCNT,   &tcp_ka_cnt, sizeof(tcp_ka_cnt)) )
+                       {
+                           fprintf(stderr, "Notice: Unable to enable TCP keep-alive: %s\n",
+                               strerror(errno));
+                       }
                }
 
                /* required to get parallel v4 + v6 working */
@@ -615,11 +620,61 @@ static void uh_mainloop(struct config *conf, fd_set serv_fds, int max_fd)
 #endif
 }
 
+#ifdef HAVE_TLS
+static inline uh_inittls(struct config *conf)
+{
+       /* library handle */
+       void *lib;
+
+       /* already loaded */
+       if( conf->tls != NULL )
+               return 0;
+
+       /* load TLS plugin */
+       if( ! (lib = dlopen("uhttpd_tls.so", RTLD_LAZY | RTLD_GLOBAL)) )
+       {
+               fprintf(stderr,
+                       "Notice: Unable to load TLS plugin - disabling SSL support! "
+                       "(Reason: %s)\n", dlerror()
+               );
+
+               return 1;
+       }
+       else
+       {
+               /* resolve functions */
+               if( !(conf->tls_init   = dlsym(lib, "uh_tls_ctx_init"))      ||
+                   !(conf->tls_cert   = dlsym(lib, "uh_tls_ctx_cert"))      ||
+                   !(conf->tls_key    = dlsym(lib, "uh_tls_ctx_key"))       ||
+                   !(conf->tls_free   = dlsym(lib, "uh_tls_ctx_free"))      ||
+                   !(conf->tls_accept = dlsym(lib, "uh_tls_client_accept")) ||
+                   !(conf->tls_close  = dlsym(lib, "uh_tls_client_close"))  ||
+                   !(conf->tls_recv   = dlsym(lib, "uh_tls_client_recv"))   ||
+                   !(conf->tls_send   = dlsym(lib, "uh_tls_client_send"))
+               ) {
+                       fprintf(stderr,
+                               "Error: Failed to lookup required symbols "
+                               "in TLS plugin: %s\n", dlerror()
+                       );
+                       exit(1);
+               }
+
+               /* init SSL context */
+               if( ! (conf->tls = conf->tls_init()) )
+               {
+                       fprintf(stderr, "Error: Failed to initalize SSL context\n");
+                       exit(1);
+               }
+       }
+
+       return 0;
+}
+#endif
 
 int main (int argc, char **argv)
 {
        /* master file descriptor list */
-       fd_set used_fds, serv_fds, read_fds;
+       fd_set serv_fds;
 
        /* working structs */
        struct addrinfo hints;
@@ -645,15 +700,12 @@ int main (int argc, char **argv)
        char bind[128];
        char *port = NULL;
 
-#if defined(HAVE_TLS) || defined(HAVE_LUA)
+#ifdef HAVE_LUA
        /* library handle */
        void *lib;
 #endif
 
-       /* clear the master and temp sets */
-       FD_ZERO(&used_fds);
        FD_ZERO(&serv_fds);
-       FD_ZERO(&read_fds);
 
        /* handle SIGPIPE, SIGINT, SIGTERM, SIGCHLD */
        sa.sa_flags = 0;
@@ -684,45 +736,9 @@ int main (int argc, char **argv)
        memset(&conf, 0, sizeof(conf));
        memset(bind, 0, sizeof(bind));
 
-#ifdef HAVE_TLS
-       /* load TLS plugin */
-       if( ! (lib = dlopen("uhttpd_tls.so", RTLD_LAZY | RTLD_GLOBAL)) )
-       {
-               fprintf(stderr,
-                       "Notice: Unable to load TLS plugin - disabling SSL support! "
-                       "(Reason: %s)\n", dlerror()
-               );
-       }
-       else
-       {
-               /* resolve functions */
-               if( !(conf.tls_init   = dlsym(lib, "uh_tls_ctx_init"))      ||
-                   !(conf.tls_cert   = dlsym(lib, "uh_tls_ctx_cert"))      ||
-                   !(conf.tls_key    = dlsym(lib, "uh_tls_ctx_key"))       ||
-                   !(conf.tls_free   = dlsym(lib, "uh_tls_ctx_free"))      ||
-                       !(conf.tls_accept = dlsym(lib, "uh_tls_client_accept")) ||
-                       !(conf.tls_close  = dlsym(lib, "uh_tls_client_close"))  ||
-                       !(conf.tls_recv   = dlsym(lib, "uh_tls_client_recv"))   ||
-                       !(conf.tls_send   = dlsym(lib, "uh_tls_client_send"))
-               ) {
-                       fprintf(stderr,
-                               "Error: Failed to lookup required symbols "
-                               "in TLS plugin: %s\n", dlerror()
-                       );
-                       exit(1);
-               }
-
-               /* init SSL context */
-               if( ! (conf.tls = conf.tls_init()) )
-               {
-                       fprintf(stderr, "Error: Failed to initalize SSL context\n");
-                       exit(1);
-               }
-       }
-#endif
 
        while( (opt = getopt(argc, argv,
-               "fSDRC:K:E:I:p:s:h:c:l:L:d:r:m:x:i:t:T:")) > 0
+               "fSDRC:K:E:I:p:s:h:c:l:L:d:r:m:x:i:t:T:A:")) > 0
        ) {
                switch(opt)
                {
@@ -748,7 +764,7 @@ int main (int argc, char **argv)
 #ifdef HAVE_TLS
                                if( opt == 's' )
                                {
-                                       if( !conf.tls )
+                                       if( uh_inittls(&conf) )
                                        {
                                                fprintf(stderr,
                                                        "Notice: TLS support is disabled, "
@@ -773,7 +789,7 @@ int main (int argc, char **argv)
 #ifdef HAVE_TLS
                        /* certificate */
                        case 'C':
-                               if( conf.tls )
+                               if( !uh_inittls(&conf) )
                                {
                                        if( conf.tls_cert(conf.tls, optarg) < 1 )
                                        {
@@ -789,7 +805,7 @@ int main (int argc, char **argv)
 
                        /* key */
                        case 'K':
-                               if( conf.tls )
+                               if( !uh_inittls(&conf) )
                                {
                                        if( conf.tls_key(conf.tls, optarg) < 1 )
                                        {
@@ -896,6 +912,11 @@ int main (int argc, char **argv)
                                conf.network_timeout = atoi(optarg);
                                break;
 
+                       /* tcp keep-alive */
+                       case 'A':
+                               conf.tcp_keepalive = atoi(optarg);
+                               break;
+
                        /* no fork */
                        case 'f':
                                nofork = 1;
@@ -905,8 +926,14 @@ int main (int argc, char **argv)
                        case 'd':
                                if( (port = malloc(strlen(optarg)+1)) != NULL )
                                {
+                                       /* "decode" plus to space to retain compat */
+                                       for (opt = 0; optarg[opt]; opt++)
+                                               if (optarg[opt] == '+')
+                                                       optarg[opt] = ' ';
+
                                        memset(port, 0, strlen(optarg)+1);
                                        uh_urldecode(port, strlen(optarg), optarg, strlen(optarg));
+
                                        printf("%s", port);
                                        free(port);
                                        exit(0);