#include #include #include #include #include #include "lacweb.h" int lw_port = 8080; int lw_backlog = 10; int lw_bufsize = 1024; void lw_handle(lw_context, char*); static void worker(int sock) { char buf[lw_bufsize+1], *back = buf, *s; while (1) { int r = recv(sock, back, lw_bufsize - (back - buf), 0); if (r < 0) { fprintf(stderr, "Recv failed\n"); close(sock); return; } if (r == 0) { printf("Connection closed.\n"); close(sock); return; } printf("Received %d bytes.\n", r); back += r; *back = 0; if (s = strstr(buf, "\r\n\r\n")) { char *cmd, *path; lw_context ctx; *s = 0; if (!(s = strstr(buf, "\r\n"))) { fprintf(stderr, "No newline in buf\n"); close(sock); return; } *s = 0; cmd = s = buf; if (!strsep(&s, " ")) { fprintf(stderr, "No first space in HTTP command\n"); close(sock); return; } if (strcmp(cmd, "GET")) { fprintf(stderr, "Not ready for non-get command: %s\n", cmd); close(sock); return; } path = s; if (!strsep(&s, " ")) { fprintf(stderr, "No second space in HTTP command\n"); close(sock); return; } printf("Serving URI %s....\n", path); ctx = lw_init(1024, 1024); lw_write (ctx, "HTTP/1.1 200 OK\r\n"); lw_write(ctx, "Content-type: text/html\r\n\r\n"); lw_write(ctx, ""); lw_handle(ctx, path); lw_write(ctx, ""); lw_send(ctx, sock); lw_free(ctx); printf("Done with client.\n\n"); close(sock); return; } } } int main() { // The skeleton for this function comes from Beej's sockets tutorial. int sockfd, new_fd; // listen on sock_fd, new connection on new_fd struct sockaddr_in my_addr; struct sockaddr_in their_addr; // connector's address information int sin_size, yes = 1; sockfd = socket(PF_INET, SOCK_STREAM, 0); // do some error checking! if (sockfd < 0) { fprintf(stderr, "Listener socket creation failed\n"); return 1; } if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int)) < 0) { fprintf(stderr, "Listener socket option setting failed\n"); return 1; } my_addr.sin_family = AF_INET; // host byte order my_addr.sin_port = htons(lw_port); // short, network byte order my_addr.sin_addr.s_addr = INADDR_ANY; // auto-fill with my IP memset(my_addr.sin_zero, '\0', sizeof my_addr.sin_zero); if (bind(sockfd, (struct sockaddr *)&my_addr, sizeof my_addr) < 0) { fprintf(stderr, "Listener socket bind failed\n"); return 1; } if (listen(sockfd, lw_backlog) < 0) { fprintf(stderr, "Socket listen failed\n"); return 1; } sin_size = sizeof their_addr; printf("Listening on port %d....\n", lw_port); while (1) { new_fd = accept(sockfd, (struct sockaddr *)&their_addr, &sin_size); if (new_fd < 0) { fprintf(stderr, "Socket accept failed\n"); return 1; } printf("Accepted connection.\n"); worker(new_fd); } }