-#include <usb.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+#include <unistd.h>
+#include <signal.h>
-#include "usbtmc.h"
+#include "scope.h"
+#include "commands.h"
+
+#define TIMEOUT 4
+
+static int send_binary(int s, char *buf, int len)
+{
+ int ret;
+
+ while(len > 0) {
+ ret = write(s, buf, len);
+ if (ret == -1) {
+ perror("write");
+ return ret;
+ }
+ buf += ret;
+ len -= ret;
+ }
+
+ return 0;
+}
+
+static int send_text(int s, char *buf)
+{
+ return send_binary(s, buf, strlen(buf));
+}
+
+static void serve_index(int s, struct scope *sc)
+{
+ send_text(s, "HTTP/1.0 200 OK\n");
+ send_text(s, "Content-type: text/html\n\n");
+ send_text(s, "<html><head><title>");
+ send_text(s, scope_idn(sc));
+ send_text(s, "</title></head><body bgcolor=\"#ffffff\" text=\"#000000\">\n");
+ send_text(s, "<img src=\"/lcd.png\" height=\"234\" width=\"320\">\n");
+ send_text(s, "</body></html>\n");
+}
+
+static void serve_lcd(int s, struct scope *sc)
+{
+ char buf[256];
+ int imglen;
+ unsigned char *png;
+
+ claimscope(sc);
+ png = get_lcd(sc, &imglen, 0);
+ releasescope(sc);
+
+ if (png == NULL)
+ return;
+
+
+ send_text(s, "HTTP/1.0 200 OK\n");
+ send_text(s, "Content-type: image/png\n");
+ snprintf(buf, sizeof(buf), "Content-length: %u\n\n", imglen);
+ send_text(s, buf);
+ send_binary(s, (char*)png, imglen);
+ free(png);
+}
+
+int is_eor(char *buf)
+{
+ int eor = 0;
+
+ /* This does not completely work, when the request is split
+ in multiple packets... */
+ if (strstr(buf, "\x0d\x0a\x0d\x0a")) {
+ eor = 1;
+ } else if (strstr(buf, "\x0a\x0a")) {
+ eor = 1;
+ } else if (strcmp(buf, "\x0d\x0a") == 0) {
+ eor = 1;
+ } else if (strcmp(buf, "\x0a") == 0) {
+ eor = 1;
+ }
+
+ return eor;
+}
+
+
+static void parse_request(int s, struct scope *sc)
+{
+ int ret;
+ int eor;
+ char buf[4096];
+ char file[4096];
+ const char delim[] = " \t\x0d\x0a";
+ char *saveptr;
+ char *token;
+
+ alarm(TIMEOUT);
+ ret=read(s, buf, sizeof(buf)-1);
+ if (ret == -1) {
+ perror("read");
+ return;
+ }
+ buf[ret] = 0;
+
+ eor = is_eor(buf);
+
+ token = strtok_r(buf, delim, &saveptr);
+ if (token == NULL)
+ return;
+ /* TODO: Only GET... */
+ token = strtok_r(NULL, delim, &saveptr);
+ if (token == NULL)
+ return;
+ bzero(&file, sizeof(file));
+ strncpy(file, token, sizeof(file)-1);
+
+ while (!eor) {
+ alarm(TIMEOUT);
+ ret=read(s, buf, sizeof(buf)-1);
+ if (ret == -1) {
+ perror("read");
+ return;
+ }
+ buf[ret] = 0;
+ eor = is_eor(buf);
+ }
+ alarm(0);
+
+ if (strcmp("/", file) == 0) {
+ serve_index(s, sc);
+ } else if (strcmp("/lcd.png", file) == 0) {
+ serve_lcd(s, sc);
+ }
+}
+
+void sighandler(int sig)
+{
+ switch(sig) {
+ case SIGPIPE:
+ break;
+ case SIGALRM:
+ default:
+ printf("Signal %d received\n", sig);
+ break;
+ }
+}
int main(int argc, char **argv)
{
- struct usb_dev_handle *sc;
+ struct sigaction act;
+ int sock, csock;
+ int opt;
+ socklen_t slen;
+ struct scope *sc;
+ struct sockaddr_in sin, clientsin;
+ unsigned short port = 8088;
+
+ sc = initscope();
+ if (sc == NULL) {
+ printf("Scope not found!\n");
+ exit(EXIT_FAILURE);
+ }
+
+ bzero(&act, sizeof(act));
+ act.sa_handler = sighandler;
+ act.sa_flags = SA_RESTART;
+ if (sigaction(SIGPIPE, &act, NULL) == -1) {
+ perror("sigaction");
+ exit(EXIT_FAILURE);
+ }
+
+ bzero(&act, sizeof(act));
+ act.sa_handler = sighandler;
+ if (sigaction(SIGALRM, &act, NULL) == -1) {
+ perror("sigaction");
+ exit(EXIT_FAILURE);
+ }
+
+ if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
+ perror("socket");
+ exit(EXIT_FAILURE);
+ }
+
+ if (argc == 2) {
+ port=atoi(argv[1]);
+ }
+
+ bzero(&sin, sizeof(sin));
+ sin.sin_addr.s_addr=htonl(INADDR_ANY);
+ sin.sin_family=AF_INET;
+ sin.sin_port=htons(port);
+
+ opt = 1;
+ setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &opt,sizeof(opt));
+
+ if (bind(sock, (struct sockaddr*)&sin, sizeof(sin)) == -1) {
+ perror("bind");
+ exit(EXIT_FAILURE);
+ }
+
+ listen(sock, 32);
+ printf("Listening on Port %u\n", port);
+
+ while(1) {
+ bzero(&clientsin, sizeof(clientsin));
+ slen = sizeof(clientsin);
+ if ((csock = accept(sock, (struct sockaddr*)&clientsin, &slen)) == -1) {
+ perror("accept");
+ }
+
+ parse_request(csock, sc);
+
+ close(csock);
+ }
- sc = usbtmc_initscope();
- usbtmc_close(sc);
+ closescope(sc);
return 0;
}
projects / rigol / blobdiff