271 lines
8.3 KiB
C
271 lines
8.3 KiB
C
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// @fixme: broken with tcc -m64 (our default tcc configuration)
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int download_file( FILE *out, const char *url ) {
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int ok = false;
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if( out ) for( https_t *h = https_get(url, NULL); h; https_release(h), h = NULL ) {
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while (https_process(h) == HTTPS_STATUS_PENDING) sleep_ms(1);
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//printf("fetch status%d, %d %s\n\n%.*s\n", https_process(h), h->status_code, h->content_type, (int)h->response_size, (char*)h->response_data);
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if(https_process(h) == HTTPS_STATUS_COMPLETED)
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ok = fwrite(h->response_data, h->response_size, 1, out) == 1;
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}
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return ok;
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}
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// @fixme: broken with tcc -m64 (our default tcc configuration)
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array(char) download( const char *url ) {
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array(char) out = 0;
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for( https_t *h = https_get(url, NULL); h; https_release(h), h = NULL ) {
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while (https_process(h) == HTTPS_STATUS_PENDING) sleep_ms(1);
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//printf("fetch status:%d, %d %s\n\n%.*s\n", https_process(h), h->status_code, h->content_type, (int)h->response_size, (char*)h->response_data);
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if( https_process(h) == HTTPS_STATUS_COMPLETED ) {
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array_resize(out, h->response_size);
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memcpy(out, h->response_data, h->response_size);
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}
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}
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return out;
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}
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bool network_tests() {
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// network test (https)
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array(char) webfile = download("https://www.google.com/");
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printf("Network test: %d bytes downloaded from google.com\n", array_count(webfile));
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return true;
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}
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int portname( const char *service_name, unsigned retries ) {
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// Determine port for a given service based on hash of its name.
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// If port cant be reached, client should retry with next hash.
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// Algorithm: fnv1a(name of service) -> splitmix64 num retries -> remap bucket as [min..max] ports.
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// hash64
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uint64_t hash = 14695981039346656037ULL;
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while( *service_name ) {
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hash = ( (unsigned char)*service_name++ ^ hash ) * 0x100000001b3ULL;
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}
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// splitmix64
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for( unsigned i = 0; i < retries; ++i ) {
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uint64_t h = (hash += UINT64_C(0x9E3779B97F4A7C15));
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h = (h ^ (h >> 30)) * UINT64_C(0xBF58476D1CE4E5B9);
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h = (h ^ (h >> 27)) * UINT64_C(0x94D049BB133111EB);
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h = (h ^ (h >> 31));
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hash = h;
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}
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// See dynamic ports: https://en.wikipedia.org/wiki/Ephemeral_port
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// So, excluded ranges: 32768..60999 (linux), 49152..65535 (freebsd+vista+win7), 1024..5000 (winsrv2003+bsd)
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// Output range: [5001..32724], in 4096 steps
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return ((hash & 0xFFF) * 677 / 100 + 5001);
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}
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static
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void netdump( const void *ptr, int len ) {
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char hexbuf[256] = {0}, strbuf[256] = {0}, *data = (char*)ptr, width = 16;
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for( int jt = 0; jt < len; jt += width ) {
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char *hex = hexbuf, *str = strbuf;
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for( int it = jt, next = it + width; it < len && it < next; ++it, ++data ) {
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hex += sprintf( hex, "%02x ", (unsigned char)*data);
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str += sprintf( str, "%c", *data >= 32 && *data != '\\' ? *data : '.');
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}
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printf("%06x %-*s%s\n", jt, width*3, hexbuf, strbuf);
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}
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}
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// -----------------------------------------------------------------------------
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#define UDP_DEBUG 0
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static int udp_init() {
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do_once {
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int rc = swrapInit(); // atexit(swrapTerminate);
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if( rc ) PANIC("udp_init: swrapInit error");
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}
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return 1;
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}
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int udp_open(const char *address, const char *port) {
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do_once udp_init();
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int fd = swrapSocket(SWRAP_UDP, SWRAP_CONNECT, 0, address, port);
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// if( fd == -1 ) PANIC("udp_open: swrapSocket error");
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return fd;
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}
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int udp_bind(const char *address, const char *port) {
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do_once udp_init();
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int fd = swrapSocket(SWRAP_UDP, SWRAP_BIND, 0, address, port);
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// if( fd == -1 ) PANIC("udp_bind: swrapSocket error");
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return fd;
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}
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int udp_send( int fd, const void *buf, int len ) { // returns bytes sent, or -1 if error
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int rc = -1;
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if( fd >= 0 ) for( ;; ) {
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rc = swrapSend(fd, (const char *)buf, len);
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#if is(win32)
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if( rc == -1 && WSAGetLastError() == WSAEINTR ) continue;
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else break;
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#else
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if( rc == -1 && errno == EINTR ) continue;
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else break;
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#endif
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}
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#if UDP_DEBUG
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if( rc > 0 ) {
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char host[128], serv[128];
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int rc2 = swrapAddressInfo(&sa, host, 128, serv, 128 );
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if( rc2 != 0 ) PANIC("swrapAddressInfo error");
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printf("udp_send: %d bytes to %s:%s : %.*s\n", rc, host, serv, rc, buf );
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netdump(buf, rc);
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}
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#endif
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return rc;
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}
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int udp_close( int fd ) { // @todo: expose me? needed?
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#if is(win32)
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// closesocket(fd);
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#else
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// close(fd);
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#endif
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fd = -1; // noop
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return 0;
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}
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#if 0
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// use socket to send data to another address
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int udp_sendto( int fd, const char *ip, const char *port, const void *buf, int len ) { // return number of bytes sent
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#if 0
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int rc = swrapSendTo(fd, struct swrap_addr*, (const char*)buf, len);
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if( rc == -1 ) return -1; //PANIC("udp_send: swrapSend error");
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return rc;
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#else
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struct sockaddr_in addr = {0};
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addr.sin_family = AF_INET;
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// use inet_addr. tcc(win32) wont work otherwise.
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addr.sin_addr.s_addr = inet_addr(ip); // inet_pton(AF_INET, ip, &addr.sin_addr);
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addr.sin_port = htons(atoi(port));
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int n = sendto(fd, buf, len, 0, (struct sockaddr *)&addr, sizeof(addr));
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return n < 0 ? -1 : n;
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#endif
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}
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#endif
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int udp_peek( int fd ) { // <0 error, 0 timeout, >0 data
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int rc = swrapSelect(fd, 0.00001);
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if( rc < 0 ) return -1; // PANIC("udp_peek: swrapSelect error");
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if( rc == 0 ) return 0; // timeout
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return 1; //> 0: new data is available
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}
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int udp_recv( int fd, void *buf, int len ) { // <0 error, 0 orderly shutdown, >0 received bytes
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struct swrap_addr sa = {0};
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int rc = swrapReceiveFrom(fd, &sa, buf, len);
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if( rc < 0 ) return -1; // PANIC("udp_recv: swrapReceiveFrom error");
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if( rc == 0 ) return 0; // orderly shutdown
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#if UDP_DEBUG
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char host[128], serv[128];
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int rc2 = swrapAddressInfo(&sa, host, 128, serv, 128 );
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if( rc2 != 0 ) PANIC("swrapAddressInfo error");
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printf("udp_recv: %d bytes from %s:%s : %.*s\n", rc, host, serv, rc, buf );
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netdump(buf, rc);
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#endif
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return rc;
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}
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// -----------------------------------------------------------------------------
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#define TCP_DEBUG 1
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#if TCP_DEBUG
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static set(int) tcp_set;
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#endif
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void tcp_init(void) {
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do_once {
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udp_init();
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#if TCP_DEBUG
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set_init(tcp_set, less_int, hash_int);
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#endif
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}
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}
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int tcp_open(const char *address, const char *port) {
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do_once tcp_init();
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int fd = swrapSocket(SWRAP_TCP, SWRAP_CONNECT, 0/*|SWRAP_NODELAY*/, address, port);
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return fd;
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}
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int tcp_bind(const char *interface_, const char *port, int backlog) {
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do_once tcp_init();
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int fd = swrapSocket(SWRAP_TCP, SWRAP_BIND, 0/*|SWRAP_NODELAY*//*|SWRAP_NOBLOCK*/, interface_, port);
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if( fd >= 0 ) swrapListen(fd, backlog);
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return fd;
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}
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int tcp_peek(int fd, int(*callback)(int)) {
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struct swrap_addr sa;
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int fd2 = swrapAccept(fd, &sa);
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if( fd2 >= 0 ) return callback(fd2);
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return -1;
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}
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int tcp_send(int fd, const void *buf, int len) {
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int rc = swrapSend(fd, (const char *)buf, len);
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#if TCP_DEBUG
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if( set_find(tcp_set, fd) ) {
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printf("send -> %11d (status: %d) %s:%s\n", len, rc, tcp_host(fd), tcp_port(fd));
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if( rc > 0 ) netdump(buf, rc);
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}
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#endif
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return rc;
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}
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int tcp_recv(int fd, void *buf, int len) {
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int rc = swrapReceive(fd, (char*)buf, len);
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#if TCP_DEBUG
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if( rc != 0 && set_find(tcp_set, fd) ) {
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printf("recv <- %11d (status: %d) %s:%s\n", len, rc, tcp_host(fd), tcp_port(fd));
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if( rc > 0 ) netdump(buf, rc);
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}
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#endif
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return rc;
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}
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char* tcp_host(int fd) {
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char buf[1024];
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struct swrap_addr sa;
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swrapAddress(fd, &sa);
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swrapAddressInfo(&sa, buf, 512, buf+512, 512);
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return va("%s", buf);
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}
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char* tcp_port(int fd) {
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char buf[1024];
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struct swrap_addr sa;
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swrapAddress(fd, &sa);
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swrapAddressInfo(&sa, buf, 512, buf+512, 512);
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return va("%s", buf+512);
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}
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int tcp_close(int fd) {
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swrapClose(fd);
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return 0;
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}
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int tcp_debug(int fd) {
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#if TCP_DEBUG
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if( set_find(tcp_set, fd) ) {
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set_erase(tcp_set, fd);
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return 0;
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} else {
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set_insert(tcp_set, fd);
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return 1;
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}
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#else
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return 0;
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#endif
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}
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// -----------------------------------------------------------------------------
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static void network_init() {
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do_once {
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udp_init();
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tcp_init();
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}
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}
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