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sws: move away from IPv4/IPv4-only assumption 

Instead of depending the socket domain type on use_ipv6, specify the
domain type (AF_INET / AF_INET6) as variable. An enum is used here with
switch to avoid compiler warnings in connect_to, complaining that rc
is possibly undefined (which is not possible as socket_domain is
always set).

Besides abstracting the socket type, make the debugging messages be
independent on IP (introduce location_str which points to "port XXXXX").
Rename "ipv_inuse" to "socket_type" and tighten the scope (main).

Signed-off-by: Peter Wu <peter@lekensteyn.nl>
This commit is contained in:
Peter Wu 2014-11-27 23:59:19 +01:00 committed by Daniel Stenberg
parent aba5888f6b
commit cf6c5c222d
1 changed files with 39 additions and 49 deletions
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88
tests/server/sws.c
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@ -65,11 +65,13 @@
#define ERANGE 34 /* errno.h value */
#endif
static enum {
socket_domain_inet = AF_INET,
#ifdef ENABLE_IPV6
static bool use_ipv6 = FALSE;
socket_domain_inet6 = AF_INET6
#endif
} socket_domain = AF_INET;
static bool use_gopher = FALSE;
static const char *ipv_inuse = "IPv4";
static int serverlogslocked = 0;
static bool is_proxy = FALSE;
@ -1289,7 +1291,7 @@ static curl_socket_t connect_to(const char *ipaddr, unsigned short port)
#endif
#ifdef ENABLE_IPV6
if(use_ipv6) {
if(socket_domain == AF_INET6) {
op_br = "[";
cl_br = "]";
}
@ -1301,14 +1303,8 @@ static curl_socket_t connect_to(const char *ipaddr, unsigned short port)
logmsg("about to connect to %s%s%s:%hu",
op_br, ipaddr, cl_br, port);
#ifdef ENABLE_IPV6
if(!use_ipv6)
#endif
serverfd = socket(AF_INET, SOCK_STREAM, 0);
#ifdef ENABLE_IPV6
else
serverfd = socket(AF_INET6, SOCK_STREAM, 0);
#endif
serverfd = socket(socket_domain, SOCK_STREAM, 0);
if(CURL_SOCKET_BAD == serverfd) {
error = SOCKERRNO;
logmsg("Error creating socket for server conection: (%d) %s",
@ -1326,9 +1322,8 @@ static curl_socket_t connect_to(const char *ipaddr, unsigned short port)
logmsg("TCP_NODELAY set for server conection");
#endif
#ifdef ENABLE_IPV6
if(!use_ipv6) {
#endif
switch(socket_domain) {
case AF_INET:
memset(&serveraddr.sa4, 0, sizeof(serveraddr.sa4));
serveraddr.sa4.sin_family = AF_INET;
serveraddr.sa4.sin_port = htons(port);
@ -1339,9 +1334,9 @@ static curl_socket_t connect_to(const char *ipaddr, unsigned short port)
}
rc = connect(serverfd, &serveraddr.sa, sizeof(serveraddr.sa4));
break;
#ifdef ENABLE_IPV6
}
else {
case AF_INET6:
memset(&serveraddr.sa6, 0, sizeof(serveraddr.sa6));
serveraddr.sa6.sin6_family = AF_INET6;
serveraddr.sa6.sin6_port = htons(port);
@ -1352,8 +1347,9 @@ static curl_socket_t connect_to(const char *ipaddr, unsigned short port)
}
rc = connect(serverfd, &serveraddr.sa, sizeof(serveraddr.sa6));
}
break;
#endif /* ENABLE_IPV6 */
}
if(got_exit_signal) {
sclose(serverfd);
@ -1942,6 +1938,9 @@ int main(int argc, char *argv[])
int arg=1;
long pid;
const char *connecthost = "127.0.0.1";
const char *socket_type = "IPv4";
char port_str[11];
const char *location_str = port_str;
/* a default CONNECT port is basically pointless but still ... */
size_t socket_idx;
@ -1950,15 +1949,11 @@ int main(int argc, char *argv[])
while(argc>arg) {
if(!strcmp("--version", argv[arg])) {
printf("sws IPv4%s"
"\n"
,
puts("sws IPv4"
#ifdef ENABLE_IPV6
"/IPv6"
#else
""
#endif
);
);
return 0;
}
else if(!strcmp("--pidfile", argv[arg])) {
@ -1977,16 +1972,16 @@ int main(int argc, char *argv[])
end_of_headers = "\r\n"; /* gopher style is much simpler */
}
else if(!strcmp("--ipv4", argv[arg])) {
#ifdef ENABLE_IPV6
ipv_inuse = "IPv4";
use_ipv6 = FALSE;
#endif
socket_type = "IPv4";
socket_domain = AF_INET;
location_str = port_str;
arg++;
}
else if(!strcmp("--ipv6", argv[arg])) {
#ifdef ENABLE_IPV6
ipv_inuse = "IPv6";
use_ipv6 = TRUE;
socket_type = "IPv6";
socket_domain = AF_INET6;
location_str = port_str;
#endif
arg++;
}
@ -2039,6 +2034,8 @@ int main(int argc, char *argv[])
}
}
snprintf(port_str, sizeof(port_str), "port %hu", port);
#ifdef WIN32
win32_init();
atexit(win32_cleanup);
@ -2048,14 +2045,7 @@ int main(int argc, char *argv[])
pid = (long)getpid();
#ifdef ENABLE_IPV6
if(!use_ipv6)
#endif
sock = socket(AF_INET, SOCK_STREAM, 0);
#ifdef ENABLE_IPV6
else
sock = socket(AF_INET6, SOCK_STREAM, 0);
#endif
sock = socket(socket_domain, SOCK_STREAM, 0);
all_sockets[0] = sock;
num_sockets = 1;
@ -2082,33 +2072,33 @@ int main(int argc, char *argv[])
goto sws_cleanup;
}
#ifdef ENABLE_IPV6
if(!use_ipv6) {
#endif
switch(socket_domain) {
case AF_INET:
memset(&me.sa4, 0, sizeof(me.sa4));
me.sa4.sin_family = AF_INET;
me.sa4.sin_addr.s_addr = INADDR_ANY;
me.sa4.sin_port = htons(port);
rc = bind(sock, &me.sa, sizeof(me.sa4));
break;
#ifdef ENABLE_IPV6
}
else {
case AF_INET6:
memset(&me.sa6, 0, sizeof(me.sa6));
me.sa6.sin6_family = AF_INET6;
me.sa6.sin6_addr = in6addr_any;
me.sa6.sin6_port = htons(port);
rc = bind(sock, &me.sa, sizeof(me.sa6));
}
break;
#endif /* ENABLE_IPV6 */
}
if(0 != rc) {
error = SOCKERRNO;
logmsg("Error binding socket on port %hu: (%d) %s",
port, error, strerror(error));
logmsg("Error binding socket on %s: (%d) %s",
location_str, error, strerror(error));
goto sws_cleanup;
}
logmsg("Running %s %s version on port %d",
use_gopher?"GOPHER":"HTTP", ipv_inuse, (int)port);
logmsg("Running %s %s version on %s",
use_gopher?"GOPHER":"HTTP", socket_type, location_str);
/* start accepting connections */
rc = listen(sock, 5);
@ -2273,8 +2263,8 @@ sws_cleanup:
restore_signal_handlers();
if(got_exit_signal) {
logmsg("========> %s sws (port: %d pid: %ld) exits with signal (%d)",
ipv_inuse, (int)port, pid, exit_signal);
logmsg("========> %s sws (%s pid: %ld) exits with signal (%d)",
socket_type, location_str, pid, exit_signal);
/*
* To properly set the return status of the process we
* must raise the same signal SIGINT or SIGTERM that we