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add helper functions to check if all data is written to the socket
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parent
3ba88256f1
commit
8bc778b6fe
1 changed files with 20 additions and 11 deletions
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@ -25,10 +25,6 @@
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#define FORBIDDEN 403
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#define NOTFOUND 404
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#ifdef __hermit__
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void sys_msleep(unsigned int ms);
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#endif
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struct {
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char *ext;
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char *filetype;
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@ -45,6 +41,19 @@ struct {
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{"html","text/html" },
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{0,0} };
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static ssize_t nweb_write(int fd, const char* buf, size_t len)
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{
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size_t pos = 0;
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while (pos < len) {
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ssize_t r = write(fd, buf+pos, len-pos);
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if (r > 0)
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pos += r;
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}
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return pos;
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}
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static void logger(int type, char *s1, char *s2, int socket_fd)
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{
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int fd ;
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@ -54,19 +63,19 @@ static void logger(int type, char *s1, char *s2, int socket_fd)
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case ERROR: (void)sprintf(logbuffer,"ERROR: %s:%s Errno=%d exiting pid=%d",s1, s2, errno,getpid());
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break;
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case FORBIDDEN:
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(void)write(socket_fd, "HTTP/1.1 403 Forbidden\nContent-Length: 185\nConnection: close\nContent-Type: text/html\n\n<html><head>\n<title>403 Forbidden</title>\n</head><body>\n<h1>Forbidden</h1>\nThe requested URL, file type or operation is not allowed on this simple static file webserver.\n</body></html>\n",271);
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(void)nweb_write(socket_fd, "HTTP/1.1 403 Forbidden\nContent-Length: 185\nConnection: close\nContent-Type: text/html\n\n<html><head>\n<title>403 Forbidden</title>\n</head><body>\n<h1>Forbidden</h1>\nThe requested URL, file type or operation is not allowed on this simple static file webserver.\n</body></html>\n",271);
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(void)sprintf(logbuffer,"FORBIDDEN: %s:%s",s1, s2);
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break;
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case NOTFOUND:
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(void)write(socket_fd, "HTTP/1.1 404 Not Found\nContent-Length: 136\nConnection: close\nContent-Type: text/html\n\n<html><head>\n<title>404 Not Found</title>\n</head><body>\n<h1>Not Found</h1>\nThe requested URL was not found on this server.\n</body></html>\n",224);
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(void)nweb_write(socket_fd, "HTTP/1.1 404 Not Found\nContent-Length: 136\nConnection: close\nContent-Type: text/html\n\n<html><head>\n<title>404 Not Found</title>\n</head><body>\n<h1>Not Found</h1>\nThe requested URL was not found on this server.\n</body></html>\n",224);
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(void)sprintf(logbuffer,"NOT FOUND: %s:%s",s1, s2);
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break;
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case LOG: (void)sprintf(logbuffer," INFO: %s:%s:%d",s1, s2,socket_fd); break;
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}
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/* No checks here, nothing can be done with a failure anyway */
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if((fd = open("nweb.log", O_CREAT| O_WRONLY | O_APPEND,0644)) >= 0) {
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(void)write(fd,logbuffer,strlen(logbuffer));
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(void)write(fd,"\n",1);
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(void)nweb_write(fd,logbuffer,strlen(logbuffer));
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(void)nweb_write(fd,"\n",1);
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(void)close(fd);
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}
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if(type == ERROR || type == NOTFOUND || type == FORBIDDEN) exit(3);
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@ -78,7 +87,7 @@ static void web(int fd, int hit)
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int j, file_fd, buflen;
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long i, ret, len;
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char * fstr;
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static char buffer[BUFSIZE+1]; /* static so zero filled */
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char buffer[BUFSIZE+1]; /* static so zero filled */
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ret =read(fd,buffer,BUFSIZE); /* read Web request in one go */
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if(ret == 0 || ret == -1) { /* read failure stop now */
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@ -127,11 +136,11 @@ static void web(int fd, int hit)
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(void)lseek(file_fd, (off_t)0, SEEK_SET); /* lseek back to the file start ready for reading */
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(void)sprintf(buffer,"HTTP/1.1 200 OK\nServer: nweb/%d.0\nContent-Length: %ld\nConnection: close\nContent-Type: %s\n\n", VERSION, len, fstr); /* Header + a blank line */
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logger(LOG,"Header",buffer,hit);
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(void)write(fd,buffer,strlen(buffer));
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(void)nweb_write(fd,buffer,strlen(buffer));
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/* send file in 8KB block - last block may be smaller */
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while ( (ret = read(file_fd, buffer, BUFSIZE)) > 0 ) {
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(void)write(fd,buffer,ret);
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(void)nweb_write(fd,buffer,ret);
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}
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#ifdef __hermit__
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close(fd);
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