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Add support for IPv6.

This commit is contained in:
Hugh Wang 2015-12-20 21:59:20 +08:00
parent 02b02a7615
commit 72159c5010
1 changed files with 102 additions and 25 deletions
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127
darkhttpd.c
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@ -204,7 +204,11 @@ struct connection {
LIST_ENTRY(connection) entries;
int socket;
#ifdef HAVE_INET6
struct in6_addr client;
#else
in_addr_t client;
#endif
time_t last_active;
enum {
RECV_REQUEST, /* receiving request */
@ -268,13 +272,14 @@ static time_t now;
#define MAX_REQUEST_LENGTH 4000
/* Defaults can be overridden on the command-line */
static in_addr_t bindaddr = INADDR_ANY;
static const char *bindaddr;
static uint16_t bindport = 8080; /* or 80 if running as root */
static int max_connections = -1; /* kern.ipc.somaxconn */
static const char *index_name = "index.html";
static int no_listing = 0;
static int sockin = -1; /* socket to accept connections from */
static int inet6 = 0; /* whether the socket uses inet6 */
static char *wwwroot = NULL; /* a path name */
static char *logfile_name = NULL; /* NULL = no logging */
static FILE *logfile = NULL;
@ -796,16 +801,47 @@ static const char *url_content_type(const char *url) {
return default_mimetype;
}
static const char *get_address_text(const void *addr) {
if (inet6) {
#ifdef HAVE_INET6
static char text_addr[INET6_ADDRSTRLEN];
inet_ntop(AF_INET6, (struct in6_addr *)addr, text_addr,
INET6_ADDRSTRLEN);
return text_addr;
#endif
} else {
return inet_ntoa(*(struct in_addr *)addr);
}
}
/* Initialize the sockin global. This is the socket that we accept
* connections from.
*/
static void init_sockin(void) {
struct sockaddr_in addrin;
#ifdef HAVE_INET6
struct sockaddr_in6 addrin6;
#endif
socklen_t addrin_len;
int sockopt;
/* create incoming socket */
sockin = socket(PF_INET, SOCK_STREAM, 0);
if (inet6) {
#ifdef HAVE_INET6
memset(&addrin6, 0, sizeof(addrin6));
if (inet_pton(AF_INET6, bindaddr ? bindaddr : "::",
&addrin6.sin6_addr) == -1) {
errx(1, "malformed --addr argument");
}
sockin = socket(PF_INET6, SOCK_STREAM, 0);
#endif
} else {
memset(&addrin, 0, sizeof(addrin));
addrin.sin_addr.s_addr = bindaddr ? inet_addr(bindaddr) : INADDR_ANY;
if (addrin.sin_addr.s_addr == (in_addr_t)INADDR_NONE)
errx(1, "malformed --addr argument");
sockin = socket(PF_INET, SOCK_STREAM, 0);
}
if (sockin == -1)
err(1, "socket()");
@ -834,20 +870,38 @@ static void init_sockin(void) {
#endif
/* bind socket */
addrin.sin_family = (u_char)PF_INET;
addrin.sin_port = htons(bindport);
addrin.sin_addr.s_addr = bindaddr;
memset(&(addrin.sin_zero), 0, 8);
if (bind(sockin, (struct sockaddr *)&addrin,
sizeof(struct sockaddr)) == -1)
err(1, "bind(port %u)", bindport);
if (inet6) {
#ifdef HAVE_INET6
addrin6.sin6_family = AF_INET6;
addrin6.sin6_port = htons(bindport);
if (bind(sockin, (struct sockaddr *)&addrin6,
sizeof(struct sockaddr_in6)) == -1)
err(1, "bind(port %u)", bindport);
addrin_len = sizeof(addrin6);
#endif
} else {
addrin.sin_family = (u_char)PF_INET;
addrin.sin_port = htons(bindport);
if (bind(sockin, (struct sockaddr *)&addrin,
sizeof(struct sockaddr_in)) == -1)
err(1, "bind(port %u)", bindport);
addrin_len = sizeof(addrin);
}
addrin_len = sizeof(addrin);
if (getsockname(sockin, (struct sockaddr *)&addrin, &addrin_len) == -1)
err(1, "getsockname()");
printf("listening on: http://%s:%u/\n",
inet_ntoa(addrin.sin_addr), ntohs(addrin.sin_port));
if (inet6) {
#ifdef HAVE_INET6
printf("listening on: http://[%s]:%u/\n",
get_address_text(&addrin6.sin6_addr), bindport);
#endif
} else {
printf("listening on: http://%s:%u/\n",
get_address_text(&addrin.sin_addr), bindport);
}
/* listen on socket */
if (listen(sockin, max_connections) == -1)
@ -918,6 +972,10 @@ static void usage(const char *argv0) {
printf("\t--no-server-id\n"
"\t\tDon't identify the server type in headers\n"
"\t\tor directory listings.\n");
#ifdef HAVE_INET6
printf("\t--ipv6\n"
"\t\tListen on IPv6 address.\n");
#endif
}
/* Returns 1 if string is a number, 0 otherwise. Set num to NULL if
@ -979,9 +1037,7 @@ static void parse_commandline(const int argc, char *argv[]) {
else if (strcmp(argv[i], "--addr") == 0) {
if (++i >= argc)
errx(1, "missing ip after --addr");
bindaddr = inet_addr(argv[i]);
if (bindaddr == (in_addr_t)INADDR_NONE)
errx(1, "malformed --addr argument");
bindaddr = argv[i];
}
else if (strcmp(argv[i], "--maxconn") == 0) {
if (++i >= argc)
@ -1071,6 +1127,11 @@ static void parse_commandline(const int argc, char *argv[]) {
else if (strcmp(argv[i], "--no-server-id") == 0) {
want_server_id = 0;
}
#ifdef HAVE_INET6
else if (strcmp(argv[i], "--ipv6") == 0) {
inet6 = 1;
}
#endif
else
errx(1, "unknown argument `%s'", argv[i]);
}
@ -1081,7 +1142,7 @@ static struct connection *new_connection(void) {
struct connection *conn = xmalloc(sizeof(struct connection));
conn->socket = -1;
conn->client = INADDR_ANY;
memset(&conn->client, 0, sizeof(conn->client));
conn->last_active = now;
conn->request = NULL;
conn->request_length = 0;
@ -1119,22 +1180,41 @@ static struct connection *new_connection(void) {
/* Accept a connection from sockin and add it to the connection queue. */
static void accept_connection(void) {
struct sockaddr_in addrin;
#ifdef HAVE_INET6
struct sockaddr_in6 addrin6;
#endif
socklen_t sin_size;
struct connection *conn;
/* allocate and initialise struct connection */
conn = new_connection();
sin_size = sizeof(addrin);
memset(&addrin, 0, sin_size);
conn->socket = accept(sockin, (struct sockaddr *)&addrin, &sin_size);
if (inet6) {
#ifdef HAVE_INET6
sin_size = sizeof(addrin6);
memset(&addrin6, 0, sin_size);
conn->socket = accept(sockin, (struct sockaddr *)&addrin6, &sin_size);
#endif
} else {
sin_size = sizeof(addrin);
memset(&addrin, 0, sin_size);
conn->socket = accept(sockin, (struct sockaddr *)&addrin, &sin_size);
}
if (conn->socket == -1)
err(1, "accept()");
nonblock_socket(conn->socket);
conn->state = RECV_REQUEST;
conn->client = addrin.sin_addr.s_addr;
if (inet6) {
#ifdef HAVE_INET6
conn->client = addrin6.sin6_addr;
#endif
} else {
*(in_addr_t *)&conn->client = addrin.sin_addr.s_addr;
}
LIST_INSERT_HEAD(&connlist, conn, entries);
if (debug)
@ -1173,7 +1253,6 @@ static void logencode(const char *src, char *dest) {
/* Add a connection's details to the logfile. */
static void log_connection(const struct connection *conn) {
struct in_addr inaddr;
char *safe_method, *safe_url, *safe_referer, *safe_user_agent;
if (logfile == NULL)
@ -1183,8 +1262,6 @@ static void log_connection(const struct connection *conn) {
if (conn->method == NULL)
return; /* invalid - didn't parse - maybe too long */
inaddr.s_addr = conn->client;
#define make_safe(x) \
if (conn->x) { \
safe_##x = xmalloc(strlen(conn->x)*3 + 1); \
@ -1202,7 +1279,7 @@ static void log_connection(const struct connection *conn) {
fprintf(logfile, "%lu %s \"%s %s\" %d %llu \"%s\" \"%s\"\n",
(unsigned long int)now,
inet_ntoa(inaddr),
get_address_text(&conn->client),
use_safe(method),
use_safe(url),
conn->http_code,