udhcp: change UDHCP_DEBUG into int, make verbosity selectable with -v

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 30 insertions, 26 deletions

diff --git a/networking/udhcp/dhcpc.c b/networking/udhcp/dhcpc.c
index 44ff197b9..eed9d9a01 100644
--- a/networking/udhcp/dhcpc.c
+++ b/networking/udhcp/dhcpc.c
@@ -20,9 +20,9 @@
 
 static int sockfd = -1;
 
-#define LISTEN_NONE 0
+#define LISTEN_NONE   0
 #define LISTEN_KERNEL 1
-#define LISTEN_RAW 2
+#define LISTEN_RAW    2
 static smallint listen_mode;
 
 #define INIT_SELECTING  0
@@ -41,7 +41,7 @@ static smallint state;
 /* just a little helper */
 static void change_listen_mode(int new_mode)
 {
-        DEBUG("entering %s listen mode",
+        log1("entering %s listen mode",
                 new_mode ? (new_mode == 1 ? "kernel" : "raw") : "none");
 
         listen_mode = new_mode;
@@ -195,18 +195,17 @@ int udhcpc_main(int argc UNUSED_PARAM, char **argv)
                 OPT_s = 1 << 12,
                 OPT_T = 1 << 13,
                 OPT_t = 1 << 14,
-                OPT_v = 1 << 15,
-                OPT_S = 1 << 16,
-                OPT_A = 1 << 17,
-                OPT_O = 1 << 18,
-                OPT_o = 1 << 19,
-                OPT_f = 1 << 20,
+                OPT_S = 1 << 15,
+                OPT_A = 1 << 16,
+                OPT_O = 1 << 17,
+                OPT_o = 1 << 18,
+                OPT_f = 1 << 19,
 /* The rest has variable bit positions, need to be clever */
-                OPTBIT_f = 20,
-                USE_FOR_MMU(              OPTBIT_b,)
+                OPTBIT_f = 19,
+                USE_FOR_MMU(             OPTBIT_b,)
                 IF_FEATURE_UDHCPC_ARPING(OPTBIT_a,)
                 IF_FEATURE_UDHCP_PORT(   OPTBIT_P,)
-                USE_FOR_MMU(              OPT_b = 1 << OPTBIT_b,)
+                USE_FOR_MMU(             OPT_b = 1 << OPTBIT_b,)
                 IF_FEATURE_UDHCPC_ARPING(OPT_a = 1 << OPTBIT_a,)
                 IF_FEATURE_UDHCP_PORT(   OPT_P = 1 << OPTBIT_P,)
         };
@@ -219,18 +218,26 @@ int udhcpc_main(int argc UNUSED_PARAM, char **argv)
 
         /* Parse command line */
         /* Cc: mutually exclusive; O: list; -T,-t,-A take numeric param */
-        opt_complementary = "c--C:C--c:O::T+:t+:A+";
+        opt_complementary = "c--C:C--c:O::T+:t+:A+"
+#if defined CONFIG_UDHCP_DEBUG && CONFIG_UDHCP_DEBUG >= 1
+                ":vv"
+#endif
+                ;
         IF_GETOPT_LONG(applet_long_options = udhcpc_longopts;)
-        opt = getopt32(argv, "c:CV:H:h:F:i:np:qRr:s:T:t:vSA:O:of"
+        opt = getopt32(argv, "c:CV:H:h:F:i:np:qRr:s:T:t:SA:O:of"
                 USE_FOR_MMU("b")
                 IF_FEATURE_UDHCPC_ARPING("a")
                 IF_FEATURE_UDHCP_PORT("P:")
+                "v"
                 , &str_c, &str_V, &str_h, &str_h, &str_F
                 , &client_config.interface, &client_config.pidfile, &str_r /* i,p */
                 , &client_config.script /* s */
                 , &discover_timeout, &discover_retries, &tryagain_timeout /* T,t,A */
                 , &list_O
                 IF_FEATURE_UDHCP_PORT(, &str_P)
+#if defined CONFIG_UDHCP_DEBUG && CONFIG_UDHCP_DEBUG >= 1
+                , &dhcp_verbose
+#endif
                 );
         if (opt & OPT_c)
                 client_config.clientid = alloc_dhcp_option(DHCP_CLIENT_ID, str_c, 0);
@@ -252,10 +259,6 @@ int udhcpc_main(int argc UNUSED_PARAM, char **argv)
         }
         if (opt & OPT_r)
                 requested_ip = inet_addr(str_r);
-        if (opt & OPT_v) {
-                puts("version "BB_VER);
-                return 0;
-        }
 #if ENABLE_FEATURE_UDHCP_PORT
         if (opt & OPT_P) {
                 CLIENT_PORT = xatou16(str_P);
@@ -348,7 +351,7 @@ int udhcpc_main(int argc UNUSED_PARAM, char **argv)
                 retval = 0; /* If we already timed out, fall through, else... */
                 if (tv.tv_sec > 0) {
                         timestamp_before_wait = (unsigned)monotonic_sec();
-                        DEBUG("Waiting on select...");
+                        log1("Waiting on select...");
                         retval = select(max_fd + 1, &rfds, NULL, NULL, &tv);
                         if (retval < 0) {
                                 /* EINTR? A signal was caught, don't panic */
@@ -428,7 +431,7 @@ int udhcpc_main(int argc UNUSED_PARAM, char **argv)
                         case BOUND:
                                 /* Half of the lease passed, time to enter renewing state */
                                 change_listen_mode(LISTEN_KERNEL);
-                                DEBUG("Entering renew state");
+                                log1("Entering renew state");
                                 state = RENEWING;
                                 /* fall right through */
                         case RENEWING:
@@ -439,7 +442,7 @@ int udhcpc_main(int argc UNUSED_PARAM, char **argv)
                                         continue;
                                 }
                                 /* Timed out, enter rebinding state */
-                                DEBUG("Entering rebinding state");
+                                log1("Entering rebinding state");
                                 state = REBINDING;
                                 /* fall right through */
                         case REBINDING:
@@ -477,7 +480,7 @@ int udhcpc_main(int argc UNUSED_PARAM, char **argv)
                         else
                                 len = udhcp_recv_raw_packet(&packet, sockfd);
                         if (len == -1) { /* error is severe, reopen socket */
-                                DEBUG("error on read, %s, reopening socket", strerror(errno));
+                                bb_info_msg("Read error: %s, reopening socket", strerror(errno));
                                 sleep(discover_timeout); /* 3 seconds by default */
                                 change_listen_mode(listen_mode); /* just close and reopen */
                         }
@@ -489,20 +492,21 @@ int udhcpc_main(int argc UNUSED_PARAM, char **argv)
                                 continue;
 
                         if (packet.xid != xid) {
-                                DEBUG("Ignoring xid %x (our xid is %x)",
+                                log1("xid %x (our is %x), ignoring packet",
                                         (unsigned)packet.xid, (unsigned)xid);
                                 continue;
                         }
 
                         /* Ignore packets that aren't for us */
                         if (memcmp(packet.chaddr, client_config.client_mac, 6)) {
-                                DEBUG("Packet does not have our chaddr - ignoring");
+//FIXME: need to also check that last 10 bytes are zero
+                                log1("chaddr does not match, ignoring packet"); // log2?
                                 continue;
                         }
 
                         message = get_option(&packet, DHCP_MESSAGE_TYPE);
                         if (message == NULL) {
-                                bb_error_msg("cannot get message type from packet - ignoring");
+                                bb_error_msg("no message type option, ignoring packet");
                                 continue;
                         }
 
@@ -563,7 +567,7 @@ int udhcpc_main(int argc UNUSED_PARAM, char **argv)
                                                                 client_config.client_mac,
                                                                 client_config.interface)
                                                 ) {
-                                                        bb_info_msg("offered address is in use "
+                                                        bb_info_msg("Offered address is in use "
                                                                 "(got ARP reply), declining");
                                                         send_decline(xid, server_addr, packet.yiaddr);