/* * Author : WangBoJing , email : 1989wangbojing@gmail.com * * Copyright Statement: * -------------------- * This software is protected by Copyright and the information contained * herein is confidential. The software may not be copied and the information * contained herein may not be used or disclosed except with the written * permission of Author. (C) 2017 * * **** ***** ***** *** * ** *** *** * * * ** * ** * * ** ** * ** * * ** * * ** * ** ** * * ** * *** ** * ** * *********** ***** ***** ** **** * ** * ** ** ** ** ** ** * ** * ** ** * ** * ** * ** * ** * * ** ** ** * ** * ** ** * ** * ** * ** * ** * * ** ** ** * ** * ** ** * ** ** ** * ** * ** ** * ** ** ** * ** * ** * * ** ** ** * ** * ** ** * ** * ** ** * *** ** * * ** * ** ** * *** ** * ** * * ** ** * ** ** * ** ** * ** ** * ** ** * * ** * ** ** ***** * **** * ***** **** * * ***** **** * */ #include #include #include #include #include #include #include #include #include #include #include #include #define __USE_GNU #include #include #include #include #include "nty_coroutine.h" static int global_shmid = -1; static int global_semid = -1; #define TIME_SUB_MS(tv1, tv2) ((tv1.tv_sec - tv2.tv_sec) * 1000 + (tv1.tv_usec - tv2.tv_usec) / 1000) typedef struct _shm_area { int total; int accept_lock; struct timeval tv_begin; } shm_area; static shm_area *global_shmaddr = NULL; #define MAX_CLIENT_NUM 1000000 struct timeval* get_shm_timevalue(void); void set_shm_timevalue(struct timeval *tv); int add_shmvalue(void); int sub_shmvalue(void); int init_shmvalue(void); int lock_accept_mutex(void); int unlock_accept_mutex(void); unsigned long cmpxchg(void *addr, unsigned long _old, unsigned long _new, int size) { unsigned long prev; volatile unsigned int *_ptr = (volatile unsigned int *)(addr); switch (size) { case 1: { __asm__ volatile ( "lock; cmpxchgb %b1, %2" : "=a" (prev) : "r" (_new), "m" (*_ptr), "0" (_old) : "memory"); break; } case 2: { __asm__ volatile ( "lock; cmpxchgw %w1, %2" : "=a" (prev) : "r" (_new), "m" (*_ptr), "0" (_old) : "memory"); break; } case 4: { __asm__ volatile ( "lock; cmpxchg %1, %2" : "=a" (prev) : "r" (_new), "m" (*_ptr), "0" (_old) : "memory"); break; } } return prev; } #define ISspace(x) isspace((int)(x)) #define SERVER_STRING "Server: ntyco_httpd/0.1.0\r\n" #define STDIN 0 #define STDOUT 1 #define STDERR 2 #define ENABLE_NTYCO 1 #if ENABLE_NTYCO #define socket nty_socket #define accept nty_accept #define recv(a, b, c, d) nty_recv(a, b, c, d) #define send(a, b, c, d) nty_send(a, b, c, d) #define close(a) nty_close(a) #define MAX_BUFFER_LENGTH 1024 #endif void accept_request(void *); void bad_request(int); void cat(int, FILE *); void cannot_execute(int); void error_die(const char *); void execute_cgi(int, const char *, const char *, const char *); int get_line(int, char *, int); void headers(int, const char *); void not_found(int); void serve_file(int, const char *); int startup(u_short *); void unimplemented(int); int readline(char* allbuf, int level, char* linebuf) { int len = strlen(allbuf); for (;level < len; ++level) { if(allbuf[level]=='\r' && allbuf[level+1]=='\n') return level+2; else *(linebuf++) = allbuf[level]; } return -1; } /**********************************************************************/ /* A request has caused a call to accept() on the server port to * return. Process the request appropriately. * Parameters: the socket connected to the client */ /**********************************************************************/ void accept_request(void *arg) { int *pclient = (int*)arg; int client = *pclient; char buf[1024]; size_t numchars; char method[16]; char url[32]; char path[64]; size_t i, j; struct stat st; int cgi = 0; /* becomes true if server decides this is a CGI * program */ char *query_string = NULL; numchars = recv(client, buf, sizeof(buf), 0); i = 0; j = 0; while (!ISspace(buf[i]) && (i < sizeof(method) - 1)) { method[i] = buf[i]; i++; } j=i; method[i] = '\0'; if (strcasecmp(method, "GET") && strcasecmp(method, "POST")) { unimplemented(client); return; } if (strcasecmp(method, "POST") == 0) cgi = 1; i = 0; while (ISspace(buf[j]) && (j < numchars)) j++; while (!ISspace(buf[j]) && (i < sizeof(url) - 1) && (j < numchars)) { url[i] = buf[j]; i++; j++; } url[i] = '\0'; if (strcasecmp(method, "GET") == 0) { query_string = url; while ((*query_string != '?') && (*query_string != '\0')) query_string++; if (*query_string == '?') { cgi = 1; *query_string = '\0'; query_string++; } } sprintf(path, "htdocs%s", url); if (path[strlen(path) - 1] == '/') strcat(path, "index.html"); if (stat(path, &st) == -1) { while ((numchars > 0) && strcmp("\n", buf)) /* read & discard headers */ numchars = get_line(client, buf, sizeof(buf)); not_found(client); } else { if ((st.st_mode & S_IFMT) == S_IFDIR) strcat(path, "/index.html"); if ((st.st_mode & S_IXUSR) || (st.st_mode & S_IXGRP) || (st.st_mode & S_IXOTH) ) cgi = 1; cgi = 0; if (!cgi) serve_file(client, path); else execute_cgi(client, path, method, query_string); } close(client); free(pclient); } /**********************************************************************/ /* Inform the client that a request it has made has a problem. * Parameters: client socket */ /**********************************************************************/ void bad_request(int client) { char buf[1024]; sprintf(buf, "HTTP/1.0 400 BAD REQUEST\r\n"); send(client, buf, sizeof(buf), 0); sprintf(buf, "Content-type: text/html\r\n"); send(client, buf, sizeof(buf), 0); sprintf(buf, "\r\n"); send(client, buf, sizeof(buf), 0); sprintf(buf, "

Your browser sent a bad request, "); send(client, buf, sizeof(buf), 0); sprintf(buf, "such as a POST without a Content-Length.\r\n"); send(client, buf, sizeof(buf), 0); } /**********************************************************************/ /* Put the entire contents of a file out on a socket. This function * is named after the UNIX "cat" command, because it might have been * easier just to do something like pipe, fork, and exec("cat"). * Parameters: the client socket descriptor * FILE pointer for the file to cat */ /**********************************************************************/ #define HTML_PAGE " \ Index \ \

Welcome to J. David's webserver.\

CGI demo \
\ Enter a color: \ \
\ \ " void cat(int client, FILE *resource) { #if ENABLE_NTYCO char buf[1024] = HTML_PAGE; send(client, buf, strlen(buf), 0); #else char buf[1024] = {0}; fgets(buf, sizeof(buf), resource); while (!feof(resource)) { send(client, buf, strlen(buf), 0); fgets(buf, sizeof(buf), resource); } #endif } /**********************************************************************/ /* Inform the client that a CGI script could not be executed. * Parameter: the client socket descriptor. */ /**********************************************************************/ void cannot_execute(int client) { char buf[1024]; sprintf(buf, "HTTP/1.0 500 Internal Server Error\r\n"); send(client, buf, strlen(buf), 0); sprintf(buf, "Content-type: text/html\r\n"); send(client, buf, strlen(buf), 0); sprintf(buf, "\r\n"); send(client, buf, strlen(buf), 0); sprintf(buf, "

Error prohibited CGI execution.\r\n"); send(client, buf, strlen(buf), 0); } /**********************************************************************/ /* Print out an error message with perror() (for system errors; based * on value of errno, which indicates system call errors) and exit the * program indicating an error. */ /**********************************************************************/ void error_die(const char *sc) { perror(sc); exit(1); } /**********************************************************************/ /* Execute a CGI script. Will need to set environment variables as * appropriate. * Parameters: client socket descriptor * path to the CGI script */ /**********************************************************************/ void execute_cgi(int client, const char *path, const char *method, const char *query_string) { char buf[1024]; int cgi_output[2]; int cgi_input[2]; pid_t pid; int status; int i; char c; int numchars = 1; int content_length = -1; buf[0] = 'A'; buf[1] = '\0'; if (strcasecmp(method, "GET") == 0) while ((numchars > 0) && strcmp("\n", buf)) /* read & discard headers */ numchars = get_line(client, buf, sizeof(buf)); else if (strcasecmp(method, "POST") == 0) /*POST*/ { numchars = get_line(client, buf, sizeof(buf)); while ((numchars > 0) && strcmp("\n", buf)) { buf[15] = '\0'; if (strcasecmp(buf, "Content-Length:") == 0) content_length = atoi(&(buf[16])); numchars = get_line(client, buf, sizeof(buf)); } if (content_length == -1) { bad_request(client); return; } } else/*HEAD or other*/ { } if (pipe(cgi_output) < 0) { cannot_execute(client); return; } if (pipe(cgi_input) < 0) { cannot_execute(client); return; } if ( (pid = fork()) < 0 ) { cannot_execute(client); return; } sprintf(buf, "HTTP/1.0 200 OK\r\n"); send(client, buf, strlen(buf), 0); if (pid == 0) /* child: CGI script */ { char meth_env[255]; char query_env[255]; char length_env[255]; dup2(cgi_output[1], STDOUT); dup2(cgi_input[0], STDIN); close(cgi_output[0]); close(cgi_input[1]); sprintf(meth_env, "REQUEST_METHOD=%s", method); putenv(meth_env); if (strcasecmp(method, "GET") == 0) { sprintf(query_env, "QUERY_STRING=%s", query_string); putenv(query_env); } else { /* POST */ sprintf(length_env, "CONTENT_LENGTH=%d", content_length); putenv(length_env); } execl(path, "", NULL); exit(0); } else { /* parent */ close(cgi_output[1]); close(cgi_input[0]); if (strcasecmp(method, "POST") == 0) for (i = 0; i < content_length; i++) { recv(client, &c, 1, 0); int len = write(cgi_input[1], &c, 1); } while (read(cgi_output[0], &c, 1) > 0) send(client, &c, 1, 0); close(cgi_output[0]); close(cgi_input[1]); waitpid(pid, &status, 0); } } /**********************************************************************/ /* Get a line from a socket, whether the line ends in a newline, * carriage return, or a CRLF combination. Terminates the string read * with a null character. If no newline indicator is found before the * end of the buffer, the string is terminated with a null. If any of * the above three line terminators is read, the last character of the * string will be a linefeed and the string will be terminated with a * null character. * Parameters: the socket descriptor * the buffer to save the data in * the size of the buffer * Returns: the number of bytes stored (excluding null) */ /**********************************************************************/ int get_line(int sock, char *buf, int size) { int i = 0; char c = '\0'; int n; while ((i < size - 1) && (c != '\n')) { n = recv(sock, &c, 1, 0); if (n > 0) { if (c == '\r') { n = recv(sock, &c, 1, MSG_PEEK); if ((n > 0) && (c == '\n')) recv(sock, &c, 1, 0); else c = '\n'; } buf[i] = c; i++; } else c = '\n'; } buf[i] = '\0'; return(i); } /**********************************************************************/ /* Return the informational HTTP headers about a file. */ /* Parameters: the socket to print the headers on * the name of the file */ /**********************************************************************/ void headers(int client, const char *filename) { char buf[1024] = {0}; (void)filename; /* could use filename to determine file type */ #if ENABLE_NTYCO sprintf(buf, "HTTP/1.0 200 OK\r\n"); strcat(buf, SERVER_STRING); strcat(buf, "Content-Type: text/html\r\n"); strcat(buf, "\r\n"); send(client, buf, strlen(buf), 0); #else strcpy(buf, "HTTP/1.0 200 OK\r\n"); send(client, buf, strlen(buf), 0); strcpy(buf, SERVER_STRING); send(client, buf, strlen(buf), 0); sprintf(buf, "Content-Type: text/html\r\n"); send(client, buf, strlen(buf), 0); strcpy(buf, "\r\n"); send(client, buf, strlen(buf), 0); #endif } /**********************************************************************/ /* Give a client a 404 not found status message. */ /**********************************************************************/ void not_found(int client) { char buf[1024]; #if ENABLE_NTYCO sprintf(buf, "HTTP/1.0 404 NOT FOUND\r\n"); strcat(buf, SERVER_STRING); strcat(buf, "Content-Type: text/html\r\n"); strcat(buf, "\r\n"); strcat(buf, "Not Found\r\n"); strcat(buf, "

The server could not fulfill\r\n"); strcat(buf, "your request because the resource specified\r\n"); strcat(buf, "is unavailable or nonexistent.\r\n"); strcat(buf, "\r\n"); send(client, buf, strlen(buf), 0); #else sprintf(buf, "HTTP/1.0 404 NOT FOUND\r\n"); send(client, buf, strlen(buf), 0); sprintf(buf, SERVER_STRING); send(client, buf, strlen(buf), 0); sprintf(buf, "Content-Type: text/html\r\n"); send(client, buf, strlen(buf), 0); sprintf(buf, "\r\n"); send(client, buf, strlen(buf), 0); sprintf(buf, "Not Found\r\n"); send(client, buf, strlen(buf), 0); sprintf(buf, "

The server could not fulfill\r\n"); send(client, buf, strlen(buf), 0); sprintf(buf, "your request because the resource specified\r\n"); send(client, buf, strlen(buf), 0); sprintf(buf, "is unavailable or nonexistent.\r\n"); send(client, buf, strlen(buf), 0); sprintf(buf, "\r\n"); send(client, buf, strlen(buf), 0); #endif } /**********************************************************************/ /* Send a regular file to the client. Use headers, and report * errors to client if they occur. * Parameters: a pointer to a file structure produced from the socket * file descriptor * the name of the file to serve */ /**********************************************************************/ void serve_file(int client, const char *filename) { FILE *resource = NULL; int numchars = 1; char buf[1024]; #if (ENABLE_NTYCO == 0) buf[0] = 'A'; buf[1] = '\0'; while ((numchars > 0) && strcmp("\n", buf)) /* read & discard headers */ numchars = get_line(client, buf, sizeof(buf)); resource = fopen(filename, "r"); if (resource == NULL) not_found(client); else { headers(client, filename); cat(client, resource); } fclose(resource); #else headers(client, filename); cat(client, resource); #endif } /**********************************************************************/ /* This function starts the process of listening for web connections * on a specified port. If the port is 0, then dynamically allocate a * port and modify the original port variable to reflect the actual * port. * Parameters: pointer to variable containing the port to connect on * Returns: the socket */ /**********************************************************************/ int startup(u_short *port) { int httpd = 0; int on = 1; struct sockaddr_in name; httpd = socket(PF_INET, SOCK_STREAM, 0); if (httpd == -1) error_die("socket"); memset(&name, 0, sizeof(name)); name.sin_family = AF_INET; name.sin_port = htons(*port); name.sin_addr.s_addr = htonl(INADDR_ANY); if ((setsockopt(httpd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on))) < 0) { error_die("setsockopt failed"); } if (bind(httpd, (struct sockaddr *)&name, sizeof(name)) < 0) error_die("bind"); if (*port == 0) /* if dynamically allocating a port */ { socklen_t namelen = sizeof(name); if (getsockname(httpd, (struct sockaddr *)&name, &namelen) == -1) error_die("getsockname"); *port = ntohs(name.sin_port); } if (listen(httpd, 5) < 0) error_die("listen"); return(httpd); } /**********************************************************************/ /* Inform the client that the requested web method has not been * implemented. * Parameter: the client socket */ /**********************************************************************/ void unimplemented(int client) { char buf[1024]; #if ENABLE_NTYCO sprintf(buf, "HTTP/1.0 501 Method Not Implemented\r\n"); strcat(buf, SERVER_STRING); strcat(buf, "Content-Type: text/html\r\n"); strcat(buf, "\r\n"); strcat(buf, "Method Not Implemented\r\n"); strcat(buf, "\r\n"); strcat(buf, "

HTTP request method not supported.\r\n"); strcat(buf, "\r\n"); send(client, buf, strlen(buf), 0); #else sprintf(buf, "HTTP/1.0 501 Method Not Implemented\r\n"); send(client, buf, strlen(buf), 0); sprintf(buf, SERVER_STRING); send(client, buf, strlen(buf), 0); sprintf(buf, "Content-Type: text/html\r\n"); send(client, buf, strlen(buf), 0); sprintf(buf, "\r\n"); send(client, buf, strlen(buf), 0); sprintf(buf, "Method Not Implemented\r\n"); send(client, buf, strlen(buf), 0); sprintf(buf, "\r\n"); send(client, buf, strlen(buf), 0); sprintf(buf, "

HTTP request method not supported.\r\n"); send(client, buf, strlen(buf), 0); sprintf(buf, "\r\n"); send(client, buf, strlen(buf), 0); #endif } void server(void *arg) { unsigned short port = *(unsigned short *)arg; struct sockaddr_in client_name; socklen_t client_name_len = sizeof(client_name); free(arg); int fd = nty_socket(AF_INET, SOCK_STREAM, 0); if (fd < 0) return ; struct sockaddr_in local, remote; local.sin_family = AF_INET; local.sin_port = htons(port); local.sin_addr.s_addr = INADDR_ANY; bind(fd, (struct sockaddr*)&local, sizeof(struct sockaddr_in)); listen(fd, 20); while (1) { int *client_sock = (int *)malloc(sizeof(int)); *client_sock = accept(fd, (struct sockaddr *)&client_name, &client_name_len); if (*client_sock == -1) error_die("accept"); /* accept_request(&client_sock); */ #if 0 printf(" %d.%d.%d.%d:%d clientfd:%d --> New Client Connected \n", *(unsigned char*)(&client_name.sin_addr.s_addr), *((unsigned char*)(&client_name.sin_addr.s_addr)+1), *((unsigned char*)(&client_name.sin_addr.s_addr)+2), *((unsigned char*)(&client_name.sin_addr.s_addr)+3), client_name.sin_port, *client_sock); #endif nty_coroutine *read_co; nty_coroutine_create(&read_co, accept_request, client_sock); } } int mulcore_entry(int begin_port) { nty_coroutine *co = NULL; int i = 0; unsigned short base_port = begin_port; unsigned short *port = calloc(1, sizeof(unsigned short)); *port = base_port + i; nty_coroutine_create(&co, server, port); ////////no run nty_schedule_run(); //run } int process_bind(void) { int num = sysconf(_SC_NPROCESSORS_CONF); pid_t self_id = syscall(__NR_gettid); //printf("selfid --> %d\n", self_id); cpu_set_t mask; CPU_ZERO(&mask); CPU_SET(self_id % num, &mask); sched_setaffinity(0, sizeof(mask), &mask); mulcore_entry(9096); } struct timeval* get_shm_timevalue(void) { return global_shmaddr ? &global_shmaddr->tv_begin : NULL; } void set_shm_timevalue(struct timeval *tv) { if (global_shmaddr == NULL || tv == NULL) { return ; } memcpy(&global_shmaddr->tv_begin, tv, sizeof(struct timeval)); } int add_shmvalue(void) { int value = 0; int ret = -1; do { value = global_shmaddr->total; ret = cmpxchg(&global_shmaddr->total, (unsigned long)value, (unsigned long)(value+1), 4); } while (ret != value); return global_shmaddr->total; } int sub_shmvalue(void) { int value = 0; int ret = -1; do { value = global_shmaddr->total; ret = cmpxchg(&global_shmaddr->total, (unsigned long)value, (unsigned long)(value-1), 4); } while (ret != value); return global_shmaddr->total; } int lock_accept_mutex(void) { int ret = cmpxchg(&global_shmaddr->accept_lock, (unsigned long)0, (unsigned long)1, 4); return ret; //success 0, failed 1. } int unlock_accept_mutex(void) { int ret = cmpxchg(&global_shmaddr->accept_lock, (unsigned long)1, (unsigned long)0, 4); return ret; //unlock 1, lock 0 } int init_shmvalue(void) { global_shmid = shmget(IPC_PRIVATE, sizeof(shm_area), IPC_CREAT|0600); if (global_shmid < 0) { perror("shmget failed\n"); return -1; } global_shmaddr = (shm_area*)shmat(global_shmid, NULL, 0); if (global_shmaddr == (shm_area*)-1) { perror("shmat addr error"); return -1; } global_shmaddr->total = 0; gettimeofday(&global_shmaddr->tv_begin, NULL); } int main(int argc, char *argv[]) { int ret = init_shmvalue(); if (ret == -1) { printf("init share memory failed\n"); return -1; } int num = sysconf(_SC_NPROCESSORS_CONF); int i = 0; pid_t pid=0; for(i = 0;i < num;i ++) { pid=fork(); if(pid <= (pid_t) 0) { usleep(1); break; } } if (pid > 0) { printf("ntyco_httpd server running ...\n"); getchar(); } else if (pid == 0) { process_bind(); } }