7df6e18265341f87a69fba808aa1f92f8ebca841 markd Wed Apr 15 13:39:42 2026 -0700 move copy of htslib diff --git src/htslib/knetfile.c src/htslib/knetfile.c deleted file mode 100644 index ebd1cf78bbb..00000000000 --- src/htslib/knetfile.c +++ /dev/null @@ -1,684 +0,0 @@ -/* The MIT License - - Copyright (c) 2008 by Genome Research Ltd (GRL). - 2010 by Attractive Chaos <attractor@live.co.uk> - - Permission is hereby granted, free of charge, to any person obtaining - a copy of this software and associated documentation files (the - "Software"), to deal in the Software without restriction, including - without limitation the rights to use, copy, modify, merge, publish, - distribute, sublicense, and/or sell copies of the Software, and to - permit persons to whom the Software is furnished to do so, subject to - the following conditions: - - The above copyright notice and this permission notice shall be - included in all copies or substantial portions of the Software. - - THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - SOFTWARE. -*/ - -/* Probably I will not do socket programming in the next few years and - therefore I decide to heavily annotate this file, for Linux and - Windows as well. -ac */ - -#include <time.h> -#include <stdio.h> -#include <ctype.h> -#include <stdlib.h> -#include <string.h> -#include <errno.h> -#include <unistd.h> -#include <sys/types.h> - -#ifndef _WIN32 -#include <netdb.h> -#include <arpa/inet.h> -#include <sys/socket.h> -#endif - -#include "htslib/knetfile.h" -#ifdef KNETFILE_HOOKS -// Static global function pointers that may be set by knet_init_alt() -// to replace the usual knet functionality with alternate I/O implementation. -static knet_alt_open_f alt_open = NULL; -static knet_alt_dopen_f alt_dopen = NULL; -static knet_alt_read_f alt_read = NULL; -static knet_alt_seek_f alt_seek = NULL; -static knet_alt_tell_f alt_tell = NULL; -static knet_alt_close_f alt_close = NULL; - -void knet_init_alt(knet_alt_open_f open, knet_alt_dopen_f dopen, knet_alt_read_f read, - knet_alt_seek_f seek, knet_alt_tell_f tell, knet_alt_close_f close) - -{ - alt_open = open; - alt_dopen = dopen; - alt_read = read; - alt_seek = seek; - alt_tell = tell; - alt_close = close; -} -#endif - - -/* In winsock.h, the type of a socket is SOCKET, which is: "typedef - * u_int SOCKET". An invalid SOCKET is: "(SOCKET)(~0)", or signed - * integer -1. In knetfile.c, I use "int" for socket type - * throughout. This should be improved to avoid confusion. - * - * In Linux/Mac, recv() and read() do almost the same thing. You can see - * in the header file that netread() is simply an alias of read(). In - * Windows, however, they are different and using recv() is mandatory. - */ - -/* This function tests if the file handler is ready for reading (or - * writing if is_read==0). */ -static int socket_wait(int fd, int is_read) -{ - fd_set fds, *fdr = 0, *fdw = 0; - struct timeval tv; - int ret; - tv.tv_sec = 5; tv.tv_usec = 0; // 5 seconds time out - FD_ZERO(&fds); - FD_SET(fd, &fds); - if (is_read) fdr = &fds; - else fdw = &fds; - ret = select(fd+1, fdr, fdw, 0, &tv); -#ifndef _WIN32 - if (ret == -1) perror("select"); -#else - if (ret == 0) - fprintf(stderr, "select time-out\n"); - else if (ret == SOCKET_ERROR) - fprintf(stderr, "select: %d\n", WSAGetLastError()); -#endif - return ret; -} - -#ifndef _WIN32 -/* This function does not work with Windows due to the lack of - * getaddrinfo() in winsock. It is addapted from an example in "Beej's - * Guide to Network Programming" (http://beej.us/guide/bgnet/). */ -static int socket_connect(const char *host, const char *port) -{ -#define __err_connect(func) do { perror(func); freeaddrinfo(res); return -1; } while (0) - - int ai_err, on = 1, fd; - struct linger lng = { 0, 0 }; - struct addrinfo hints, *res = 0; - memset(&hints, 0, sizeof(struct addrinfo)); - hints.ai_family = AF_UNSPEC; - hints.ai_socktype = SOCK_STREAM; - /* In Unix/Mac, getaddrinfo() is the most convenient way to get - * server information. */ - if ((ai_err = getaddrinfo(host, port, &hints, &res)) != 0) { fprintf(stderr, "can't resolve %s:%s: %s\n", host, port, gai_strerror(ai_err)); return -1; } - if ((fd = socket(res->ai_family, res->ai_socktype, res->ai_protocol)) == -1) __err_connect("socket"); - /* The following two setsockopt() are used by ftplib - * (http://nbpfaus.net/~pfau/ftplib/). I am not sure if they - * necessary. */ - if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) == -1) __err_connect("setsockopt"); - if (setsockopt(fd, SOL_SOCKET, SO_LINGER, &lng, sizeof(lng)) == -1) __err_connect("setsockopt"); - if (connect(fd, res->ai_addr, res->ai_addrlen) != 0) __err_connect("connect"); - freeaddrinfo(res); - return fd; -} -#else -/* MinGW's printf has problem with "%lld" */ -char *int64tostr(char *buf, int64_t x) -{ - int cnt; - int i = 0; - do { - buf[i++] = '0' + x % 10; - x /= 10; - } while (x); - buf[i] = 0; - for (cnt = i, i = 0; i < cnt/2; ++i) { - int c = buf[i]; buf[i] = buf[cnt-i-1]; buf[cnt-i-1] = c; - } - return buf; -} - -int64_t strtoint64(const char *buf) -{ - int64_t x; - for (x = 0; *buf != '\0'; ++buf) - x = x * 10 + ((int64_t) *buf - 48); - return x; -} -/* In windows, the first thing is to establish the TCP connection. */ -int knet_win32_init() -{ - WSADATA wsaData; - return WSAStartup(MAKEWORD(2, 2), &wsaData); -} -void knet_win32_destroy() -{ - WSACleanup(); -} -/* A slightly modfied version of the following function also works on - * Mac (and presummably Linux). However, this function is not stable on - * my Mac. It sometimes works fine but sometimes does not. Therefore for - * non-Windows OS, I do not use this one. */ -static SOCKET socket_connect(const char *host, const char *port) -{ -#define __err_connect(func) \ - do { \ - fprintf(stderr, "%s: %d\n", func, WSAGetLastError()); \ - return -1; \ - } while (0) - - int on = 1; - SOCKET fd; - struct linger lng = { 0, 0 }; - struct sockaddr_in server; - struct hostent *hp = 0; - // open socket - if ((fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == INVALID_SOCKET) __err_connect("socket"); - if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char*)&on, sizeof(on)) == -1) __err_connect("setsockopt"); - if (setsockopt(fd, SOL_SOCKET, SO_LINGER, (char*)&lng, sizeof(lng)) == -1) __err_connect("setsockopt"); - // get host info - if (isalpha(host[0])) hp = gethostbyname(host); - else { - struct in_addr addr; - addr.s_addr = inet_addr(host); - hp = gethostbyaddr((char*)&addr, 4, AF_INET); - } - if (hp == 0) __err_connect("gethost"); - // connect - server.sin_addr.s_addr = *((unsigned long*)hp->h_addr); - server.sin_family= AF_INET; - server.sin_port = htons(atoi(port)); - if (connect(fd, (struct sockaddr*)&server, sizeof(server)) != 0) __err_connect("connect"); - // freehostent(hp); // strangely in MSDN, hp is NOT freed (memory leak?!) - - /* FOR CODE TO CONNECT SUPPORTING IPV6 and IPV4 using our net.c: - fd = netConnect(host, port); - */ - - return fd; -} -#endif - -static off_t my_netread(int fd, void *buf, off_t len) -{ - off_t rest = len, curr, l = 0; - /* recv() and read() may not read the required length of data with - * one call. They have to be called repeatedly. */ - while (rest) { - if (socket_wait(fd, 1) <= 0) break; // socket is not ready for reading - curr = netread(fd, (void*)((char*)buf + l), rest); - /* According to the glibc manual, section 13.2, a zero returned - * value indicates end-of-file (EOF), which should mean that - * read() will not return zero if EOF has not been met but data - * are not immediately available. */ - if (curr == 0) break; - l += curr; rest -= curr; - } - return l; -} - -/************************* - * FTP specific routines * - *************************/ - -static int kftp_get_response(knetFile *ftp) -{ -#ifndef _WIN32 - unsigned char c; -#else - char c; -#endif - int n = 0; - char *p; - if (socket_wait(ftp->ctrl_fd, 1) <= 0) return 0; - while (netread(ftp->ctrl_fd, &c, 1)) { // FIXME: this is *VERY BAD* for unbuffered I/O - //fputc(c, stderr); - if (n >= ftp->max_response) { - ftp->max_response = ftp->max_response? ftp->max_response<<1 : 256; - ftp->response = (char*)realloc(ftp->response, ftp->max_response); - } - ftp->response[n++] = c; - if (c == '\n') { - if (n >= 4 && isdigit(ftp->response[0]) && isdigit(ftp->response[1]) && isdigit(ftp->response[2]) - && ftp->response[3] != '-') break; - n = 0; - continue; - } - } - if (n < 2) return -1; - ftp->response[n-2] = 0; - return strtol(ftp->response, &p, 0); -} - -static int kftp_send_cmd(knetFile *ftp, const char *cmd, int is_get) -{ - if (socket_wait(ftp->ctrl_fd, 0) <= 0) return -1; // socket is not ready for writing - int len = strlen(cmd); - if ( netwrite(ftp->ctrl_fd, cmd, len) != len ) return -1; - return is_get? kftp_get_response(ftp) : 0; -} - -static int kftp_pasv_prep(knetFile *ftp) -{ - char *p; - int v[6]; - kftp_send_cmd(ftp, "PASV\r\n", 1); - for (p = ftp->response; *p && *p != '('; ++p); - if (*p != '(') return -1; - ++p; - sscanf(p, "%d,%d,%d,%d,%d,%d", &v[0], &v[1], &v[2], &v[3], &v[4], &v[5]); - memcpy(ftp->pasv_ip, v, 4 * sizeof(int)); - ftp->pasv_port = (v[4]<<8&0xff00) + v[5]; - return 0; -} - - -static int kftp_pasv_connect(knetFile *ftp) -{ - char host[80], port[10]; - if (ftp->pasv_port == 0) { - fprintf(stderr, "[kftp_pasv_connect] kftp_pasv_prep() is not called before hand.\n"); - return -1; - } - sprintf(host, "%d.%d.%d.%d", ftp->pasv_ip[0], ftp->pasv_ip[1], ftp->pasv_ip[2], ftp->pasv_ip[3]); - sprintf(port, "%d", ftp->pasv_port); - ftp->fd = socket_connect(host, port); - if (ftp->fd == -1) return -1; - return 0; -} - -int kftp_connect(knetFile *ftp) -{ - ftp->ctrl_fd = socket_connect(ftp->host, ftp->port); - if (ftp->ctrl_fd == -1) return -1; - kftp_get_response(ftp); - kftp_send_cmd(ftp, "USER anonymous\r\n", 1); - kftp_send_cmd(ftp, "PASS kftp@\r\n", 1); - kftp_send_cmd(ftp, "TYPE I\r\n", 1); - return 0; -} - -int kftp_reconnect(knetFile *ftp) -{ - if (ftp->ctrl_fd != -1) { - netclose(ftp->ctrl_fd); - ftp->ctrl_fd = -1; - } - netclose(ftp->fd); - ftp->fd = -1; - return kftp_connect(ftp); -} - -// initialize ->type, ->host, ->retr and ->size -knetFile *kftp_parse_url(const char *fn, const char *mode) -{ - knetFile *fp; - char *p; - int l; - if (strstr(fn, "ftp://") != fn) return 0; - for (p = (char*)fn + 6; *p && *p != '/'; ++p); - if (*p != '/') return 0; - l = p - fn - 6; - fp = (knetFile*)calloc(1, sizeof(knetFile)); - fp->type = KNF_TYPE_FTP; - fp->fd = -1; - /* the Linux/Mac version of socket_connect() also recognizes a port - * like "ftp", but the Windows version does not. */ - fp->port = strdup("21"); - fp->host = (char*)calloc(l + 1, 1); - if (strchr(mode, 'c')) fp->no_reconnect = 1; - strncpy(fp->host, fn + 6, l); - fp->retr = (char*)calloc(strlen(p) + 8, 1); - sprintf(fp->retr, "RETR %s\r\n", p); - fp->size_cmd = (char*)calloc(strlen(p) + 8, 1); - sprintf(fp->size_cmd, "SIZE %s\r\n", p); - fp->seek_offset = 0; - return fp; -} -// place ->fd at offset off -int kftp_connect_file(knetFile *fp) -{ - int ret; - long long file_size; - if (fp->fd != -1) { - netclose(fp->fd); - if (fp->no_reconnect) kftp_get_response(fp); - } - kftp_pasv_prep(fp); - kftp_send_cmd(fp, fp->size_cmd, 1); -#ifndef _WIN32 - // If the file does not exist, the response will be "550 Could not get file - // size". Be silent on failure, hts_idx_load can be trying the existence of .csi or .tbi. - if ( sscanf(fp->response,"%*d %lld", &file_size) != 1 ) return -1; -#else - const char *p = fp->response; - while (*p != ' ') ++p; - while (*p < '0' || *p > '9') ++p; - file_size = strtoint64(p); -#endif - fp->file_size = file_size; - if (fp->offset>=0) { - char tmp[32]; -#ifndef _WIN32 - sprintf(tmp, "REST %lld\r\n", (long long)fp->offset); -#else - strcpy(tmp, "REST "); - int64tostr(tmp + 5, fp->offset); - strcat(tmp, "\r\n"); -#endif - kftp_send_cmd(fp, tmp, 1); - } - kftp_send_cmd(fp, fp->retr, 0); - kftp_pasv_connect(fp); - ret = kftp_get_response(fp); - if (ret != 150) { - fprintf(stderr, "[kftp_connect_file] %s\n", fp->response); - netclose(fp->fd); - fp->fd = -1; - return -1; - } - fp->is_ready = 1; - return 0; -} - - -/************************** - * HTTP specific routines * - **************************/ - -knetFile *khttp_parse_url(const char *fn, const char *mode) -{ - knetFile *fp; - char *p, *proxy, *q; - int l; - if (strstr(fn, "http://") != fn) return 0; - // set ->http_host - for (p = (char*)fn + 7; *p && *p != '/'; ++p); - l = p - fn - 7; - fp = (knetFile*)calloc(1, sizeof(knetFile)); - fp->http_host = (char*)calloc(l + 1, 1); - strncpy(fp->http_host, fn + 7, l); - fp->http_host[l] = 0; - for (q = fp->http_host; *q && *q != ':'; ++q); - if (*q == ':') *q++ = 0; - // get http_proxy - proxy = getenv("http_proxy"); - // set ->host, ->port and ->path - if (proxy == 0) { - fp->host = strdup(fp->http_host); // when there is no proxy, server name is identical to http_host name. - fp->port = strdup(*q? q : "80"); - fp->path = strdup(*p? p : "/"); - } else { - fp->host = (strstr(proxy, "http://") == proxy)? strdup(proxy + 7) : strdup(proxy); - for (q = fp->host; *q && *q != ':'; ++q); - if (*q == ':') *q++ = 0; - fp->port = strdup(*q? q : "80"); - fp->path = strdup(fn); - } - fp->type = KNF_TYPE_HTTP; - fp->ctrl_fd = fp->fd = -1; - fp->seek_offset = 0; - return fp; -} - -int khttp_connect_file(knetFile *fp) -{ - int ret, l = 0; - char *buf, *p; - if (fp->fd != -1) netclose(fp->fd); - fp->fd = socket_connect(fp->host, fp->port); - buf = (char*)calloc(0x10000, 1); // FIXME: I am lazy... But in principle, 64KB should be large enough. - l += sprintf(buf + l, "GET %s HTTP/1.0\r\nHost: %s\r\n", fp->path, fp->http_host); - l += sprintf(buf + l, "Range: bytes=%lld-\r\n", (long long)fp->offset); - l += sprintf(buf + l, "\r\n"); - if ( netwrite(fp->fd, buf, l) != l ) { free(buf); return -1; } - l = 0; - while (netread(fp->fd, buf + l, 1)) { // read HTTP header; FIXME: bad efficiency - if (buf[l] == '\n' && l >= 3) - if (strncmp(buf + l - 3, "\r\n\r\n", 4) == 0) break; - ++l; - } - buf[l] = 0; - if (l < 14) { // prematured header - free(buf); - netclose(fp->fd); - fp->fd = -1; - return -1; - } - ret = strtol(buf + 8, &p, 0); // HTTP return code - if (ret == 200 && fp->offset>0) { // 200 (complete result); then skip beginning of the file - off_t rest = fp->offset; - while (rest) { - off_t l = rest < 0x10000? rest : 0x10000; - rest -= my_netread(fp->fd, buf, l); - } - } else if (ret != 206 && ret != 200) { - // failed to open file - free(buf); - netclose(fp->fd); - switch (ret) { - case 401: errno = EPERM; break; - case 403: errno = EACCES; break; - case 404: errno = ENOENT; break; - case 407: errno = EPERM; break; - case 408: errno = ETIMEDOUT; break; - case 410: errno = ENOENT; break; - case 503: errno = EAGAIN; break; - case 504: errno = ETIMEDOUT; break; - default: errno = (ret >= 400 && ret < 500)? EINVAL : EIO; break; - } - fp->fd = -1; - return -1; - } - free(buf); - fp->is_ready = 1; - return 0; -} - -/******************** - * Generic routines * - ********************/ - -knetFile *knet_open(const char *fn, const char *mode) -{ -#ifdef KNETFILE_HOOKS - if (alt_open) - return alt_open(fn, mode); -#endif - knetFile *fp = 0; - if (mode[0] != 'r') { - fprintf(stderr, "[kftp_open] only mode \"r\" is supported.\n"); - return 0; - } - if (strstr(fn, "ftp://") == fn) { - fp = kftp_parse_url(fn, mode); - if (fp == 0) return 0; - if (kftp_connect(fp) == -1) { - knet_close(fp); - return 0; - } - kftp_connect_file(fp); - } else if (strstr(fn, "http://") == fn) { - fp = khttp_parse_url(fn, mode); - if (fp == 0) return 0; - khttp_connect_file(fp); - } else { // local file -#ifdef _WIN32 - /* In windows, O_BINARY is necessary. In Linux/Mac, O_BINARY may - * be undefined on some systems, although it is defined on my - * Mac and the Linux I have tested on. */ - int fd = open(fn, O_RDONLY | O_BINARY); -#else - int fd = open(fn, O_RDONLY); -#endif - if (fd == -1) { - perror("open"); - return 0; - } - fp = (knetFile*)calloc(1, sizeof(knetFile)); - fp->type = KNF_TYPE_LOCAL; - fp->fd = fd; - fp->ctrl_fd = -1; - } - if (fp && fp->fd == -1) { - knet_close(fp); - return 0; - } - return fp; -} - -knetFile *knet_dopen(int fd, const char *mode) -{ -#ifdef KNETFILE_HOOKS - if (alt_dopen) - return alt_dopen(fd, mode); -#endif - - knetFile *fp = (knetFile*)calloc(1, sizeof(knetFile)); - fp->type = KNF_TYPE_LOCAL; - fp->fd = fd; - return fp; -} - -ssize_t knet_read(knetFile *fp, void *buf, size_t len) -{ -#ifdef KNETFILE_HOOKS - if (alt_read) - return alt_read(fp, buf, len); -#endif - - off_t l = 0; - if (fp->fd == -1) return 0; - if (fp->type == KNF_TYPE_FTP) { - if (fp->is_ready == 0) { - if (!fp->no_reconnect) kftp_reconnect(fp); - kftp_connect_file(fp); - } - } else if (fp->type == KNF_TYPE_HTTP) { - if (fp->is_ready == 0) - khttp_connect_file(fp); - } - if (fp->type == KNF_TYPE_LOCAL) { // on Windows, the following block is necessary; not on UNIX - size_t rest = len; - ssize_t curr; - while (rest) { - do { - curr = read(fp->fd, (void*)((char*)buf + l), rest); - } while (curr < 0 && EINTR == errno); - if (curr < 0) return -1; - if (curr == 0) break; - l += curr; rest -= curr; - } - } else l = my_netread(fp->fd, buf, len); - fp->offset += l; - return l; -} - -off_t knet_seek(knetFile *fp, off_t off, int whence) -{ -#ifdef KNETFILE_HOOKS - if (alt_seek) - return alt_seek(fp, off, whence); -#endif - - if (whence == SEEK_SET && off == fp->offset) return 0; - if (fp->type == KNF_TYPE_LOCAL) { - /* Be aware that lseek() returns the offset after seeking, while fseek() returns zero on success. */ - off_t offset = lseek(fp->fd, off, whence); - if (offset == -1) return -1; - fp->offset = offset; - return fp->offset; - } else if (fp->type == KNF_TYPE_FTP) { - if (whence == SEEK_CUR) fp->offset += off; - else if (whence == SEEK_SET) fp->offset = off; - else if (whence == SEEK_END) fp->offset = fp->file_size + off; - else return -1; - fp->is_ready = 0; - return fp->offset; - } else if (fp->type == KNF_TYPE_HTTP) { - if (whence == SEEK_END) { // FIXME: can we allow SEEK_END in future? - fprintf(stderr, "[knet_seek] SEEK_END is not supported for HTTP. Offset is unchanged.\n"); - errno = ESPIPE; - return -1; - } - if (whence == SEEK_CUR) fp->offset += off; - else if (whence == SEEK_SET) fp->offset = off; - else return -1; - fp->is_ready = 0; - return fp->offset; - } - errno = EINVAL; - fprintf(stderr,"[knet_seek] %s\n", strerror(errno)); - return -1; -} - -int knet_close(knetFile *fp) -{ -#ifdef KNETFILE_HOOKS - if (alt_close) - return alt_close(fp); -#endif - - if (fp == 0) return 0; - if (fp->ctrl_fd != -1) netclose(fp->ctrl_fd); // FTP specific - if (fp->fd != -1) { - /* On Linux/Mac, netclose() is an alias of close(), but on - * Windows, it is an alias of closesocket(). */ - if (fp->type == KNF_TYPE_LOCAL) close(fp->fd); - else netclose(fp->fd); - } - free(fp->host); free(fp->port); - free(fp->response); free(fp->retr); // FTP specific - free(fp->path); free(fp->http_host); // HTTP specific - free(fp); - return 0; -} - -#ifdef KNETFILE_MAIN -int main(void) -{ - char *buf; - knetFile *fp; - int type = 4, l; -#ifdef _WIN32 - knet_win32_init(); -#endif - buf = calloc(0x100000, 1); - if (type == 0) { - fp = knet_open("knetfile.c", "r"); - knet_seek(fp, 1000, SEEK_SET); - } else if (type == 1) { // NCBI FTP, large file - fp = knet_open("ftp://ftp.ncbi.nih.gov/1000genomes/ftp/data/NA12878/alignment/NA12878.chrom6.SLX.SRP000032.2009_06.bam", "r"); - knet_seek(fp, 2500000000ll, SEEK_SET); - l = knet_read(fp, buf, 255); - } else if (type == 2) { - fp = knet_open("ftp://ftp.sanger.ac.uk/pub4/treefam/tmp/index.shtml", "r"); - knet_seek(fp, 1000, SEEK_SET); - } else if (type == 3) { - fp = knet_open("http://www.sanger.ac.uk/Users/lh3/index.shtml", "r"); - knet_seek(fp, 1000, SEEK_SET); - } else if (type == 4) { - fp = knet_open("http://www.sanger.ac.uk/Users/lh3/ex1.bam", "r"); - knet_read(fp, buf, 10000); - knet_seek(fp, 20000, SEEK_SET); - knet_seek(fp, 10000, SEEK_SET); - l = knet_read(fp, buf+10000, 10000000) + 10000; - } - if (type != 4 && type != 1) { - knet_read(fp, buf, 255); - buf[255] = 0; - printf("%s\n", buf); - } else write(fileno(stdout), buf, l); - knet_close(fp); - free(buf); - return 0; -} -#endif