X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=networking%2Fwget.c;h=0f99e8d1341e8facc3afdf478d406c95d6ed47b9;hb=3b3ccdc5bc530e824a55ebc8d57c34f0ca6a30c9;hp=f0ef3e4858690166aea343c75acd188ce104171c;hpb=3526a1320a7e70be0def06a31b65ffff3430510b;p=oweals%2Fbusybox.git diff --git a/networking/wget.c b/networking/wget.c index f0ef3e485..0f99e8d13 100644 --- a/networking/wget.c +++ b/networking/wget.c @@ -4,80 +4,250 @@ * * Chip Rosenthal Covad Communications * + * Licensed under GPLv2, see file LICENSE in this tarball for details. */ - -#include "busybox.h" -#include - +#include "libbb.h" struct host_info { - char *host; - int port; - char *path; - int is_ftp; - char *user; + // May be used if we ever will want to free() all xstrdup()s... + /* char *allocated; */ + const char *path; + const char *user; + char *host; + int port; + smallint is_ftp; }; -static void parse_url(char *url, struct host_info *h); -static FILE *open_socket(struct sockaddr_in *s_in); -static char *gethdr(char *buf, size_t bufsiz, FILE *fp, int *istrunc); -static int ftpcmd(char *s1, char *s2, FILE *fp, char *buf); - -/* Globals (can be accessed from signal handlers */ -static off_t filesize; /* content-length of the file */ -static int chunked; /* chunked transfer encoding */ -#ifdef CONFIG_FEATURE_WGET_STATUSBAR -static void progressmeter(int flag); -static char *curfile; /* Name of current file being transferred. */ -static struct timeval start; /* Time a transfer started. */ -static off_t transferred; /* Number of bytes transferred so far. */ -/* For progressmeter() -- number of seconds before xfer considered "stalled" */ + +/* Globals (can be accessed from signal handlers) */ +struct globals { + off_t content_len; /* Content-length of the file */ + off_t beg_range; /* Range at which continue begins */ +#if ENABLE_FEATURE_WGET_STATUSBAR + off_t lastsize; + off_t totalsize; + off_t transferred; /* Number of bytes transferred so far */ + const char *curfile; /* Name of current file being transferred */ + unsigned lastupdate_sec; + unsigned start_sec; +#endif + smallint chunked; /* chunked transfer encoding */ + smallint got_clen; /* got content-length: from server */ +}; +#define G (*(struct globals*)&bb_common_bufsiz1) +struct BUG_G_too_big { + char BUG_G_too_big[sizeof(G) <= COMMON_BUFSIZE ? 1 : -1]; +}; +#define content_len (G.content_len ) +#define beg_range (G.beg_range ) +#define lastsize (G.lastsize ) +#define totalsize (G.totalsize ) +#define transferred (G.transferred ) +#define curfile (G.curfile ) +#define lastupdate_sec (G.lastupdate_sec ) +#define start_sec (G.start_sec ) +#define INIT_G() do { } while (0) + + +#if ENABLE_FEATURE_WGET_STATUSBAR enum { - STALLTIME = 5 + STALLTIME = 5 /* Seconds when xfer considered "stalled" */ }; -#else -static inline void progressmeter(int flag) {} -#endif -static void close_and_delete_outfile(FILE* output, char *fname_out, int do_continue) +static unsigned int get_tty2_width(void) +{ + unsigned width; + get_terminal_width_height(2, &width, NULL); + return width; +} + +static void progress_meter(int flag) { - if (output != stdout && do_continue == 0) { - fclose(output); - unlink(fname_out); + /* We can be called from signal handler */ + int save_errno = errno; + off_t abbrevsize; + unsigned since_last_update, elapsed; + unsigned ratio; + int barlength, i; + + if (flag == -1) { /* first call to progress_meter */ + start_sec = monotonic_sec(); + lastupdate_sec = start_sec; + lastsize = 0; + totalsize = content_len + beg_range; /* as content_len changes.. */ + } + + ratio = 100; + if (totalsize != 0 && !G.chunked) { + /* long long helps to have it working even if !LFS */ + ratio = (unsigned) (100ULL * (transferred+beg_range) / totalsize); + if (ratio > 100) ratio = 100; + } + + fprintf(stderr, "\r%-20.20s%4d%% ", curfile, ratio); + + barlength = get_tty2_width() - 49; + if (barlength > 0) { + /* god bless gcc for variable arrays :) */ + i = barlength * ratio / 100; + { + char buf[i+1]; + memset(buf, '*', i); + buf[i] = '\0'; + fprintf(stderr, "|%s%*s|", buf, barlength - i, ""); + } + } + i = 0; + abbrevsize = transferred + beg_range; + while (abbrevsize >= 100000) { + i++; + abbrevsize >>= 10; + } + /* see http://en.wikipedia.org/wiki/Tera */ + fprintf(stderr, "%6d%c ", (int)abbrevsize, " kMGTPEZY"[i]); + +// Nuts! Ain't it easier to update progress meter ONLY when we transferred++? + + elapsed = monotonic_sec(); + since_last_update = elapsed - lastupdate_sec; + if (transferred > lastsize) { + lastupdate_sec = elapsed; + lastsize = transferred; + if (since_last_update >= STALLTIME) { + /* We "cut off" these seconds from elapsed time + * by adjusting start time */ + start_sec += since_last_update; + } + since_last_update = 0; /* we are un-stalled now */ + } + elapsed -= start_sec; /* now it's "elapsed since start" */ + + if (since_last_update >= STALLTIME) { + fprintf(stderr, " - stalled -"); + } else { + off_t to_download = totalsize - beg_range; + if (transferred <= 0 || (int)elapsed <= 0 || transferred > to_download || G.chunked) { + fprintf(stderr, "--:--:-- ETA"); + } else { + /* to_download / (transferred/elapsed) - elapsed: */ + int eta = (int) ((unsigned long long)to_download*elapsed/transferred - elapsed); + /* (long long helps to have working ETA even if !LFS) */ + i = eta % 3600; + fprintf(stderr, "%02d:%02d:%02d ETA", eta / 3600, i / 60, i % 60); + } + } + + if (flag == 0) { + /* last call to progress_meter */ + alarm(0); + transferred = 0; + fputc('\n', stderr); + } else { + if (flag == -1) { /* first call to progress_meter */ + signal_SA_RESTART_empty_mask(SIGALRM, progress_meter); + } + alarm(1); } + + errno = save_errno; } +/* Original copyright notice which applies to the CONFIG_FEATURE_WGET_STATUSBAR stuff, + * much of which was blatantly stolen from openssh. */ +/*- + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. + * + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + */ +#else /* FEATURE_WGET_STATUSBAR */ + +static ALWAYS_INLINE void progress_meter(int flag UNUSED_PARAM) { } -/* Read NMEMB elements of SIZE bytes into PTR from STREAM. Returns the - * number of elements read, and a short count if an eof or non-interrupt - * error is encountered. */ -static size_t safe_fread(void *ptr, size_t size, size_t nmemb, FILE *stream) +#endif + + +/* IPv6 knows scoped address types i.e. link and site local addresses. Link + * local addresses can have a scope identifier to specify the + * interface/link an address is valid on (e.g. fe80::1%eth0). This scope + * identifier is only valid on a single node. + * + * RFC 4007 says that the scope identifier MUST NOT be sent across the wire, + * unless all nodes agree on the semantic. Apache e.g. regards zone identifiers + * in the Host header as invalid requests, see + * https://issues.apache.org/bugzilla/show_bug.cgi?id=35122 + */ +static void strip_ipv6_scope_id(char *host) { - size_t ret = 0; + char *scope, *cp; - do { - clearerr(stream); - ret += fread((char *)ptr + (ret * size), size, nmemb - ret, stream); - } while (ret < nmemb && ferror(stream) && errno == EINTR); + /* bbox wget actually handles IPv6 addresses without [], like + * wget "http://::1/xxx", but this is not standard. + * To save code, _here_ we do not support it. */ - return ret; + if (host[0] != '[') + return; /* not IPv6 */ + + scope = strchr(host, '%'); + if (!scope) + return; + + /* Remove the IPv6 zone identifier from the host address */ + cp = strchr(host, ']'); + if (!cp || (cp[1] != ':' && cp[1] != '\0')) { + /* malformed address (not "[xx]:nn" or "[xx]") */ + return; + } + + /* cp points to "]...", scope points to "%eth0]..." */ + overlapping_strcpy(scope, cp); } -/* Write NMEMB elements of SIZE bytes from PTR to STREAM. Returns the - * number of elements written, and a short count if an eof or non-interrupt - * error is encountered. */ -static size_t safe_fwrite(void *ptr, size_t size, size_t nmemb, FILE *stream) +/* Read NMEMB bytes into PTR from STREAM. Returns the number of bytes read, + * and a short count if an eof or non-interrupt error is encountered. */ +static size_t safe_fread(void *ptr, size_t nmemb, FILE *stream) { - size_t ret = 0; + size_t ret; + char *p = (char*)ptr; do { clearerr(stream); - ret += fwrite((char *)ptr + (ret * size), size, nmemb - ret, stream); - } while (ret < nmemb && ferror(stream) && errno == EINTR); + errno = 0; + ret = fread(p, 1, nmemb, stream); + p += ret; + nmemb -= ret; + } while (nmemb && ferror(stream) && errno == EINTR); - return ret; + return p - (char*)ptr; } -/* Read a line or SIZE - 1 bytes into S, whichever is less, from STREAM. +/* Read a line or SIZE-1 bytes into S, whichever is less, from STREAM. * Returns S, or NULL if an eof or non-interrupt error is encountered. */ static char *safe_fgets(char *s, int size, FILE *stream) { @@ -85,734 +255,715 @@ static char *safe_fgets(char *s, int size, FILE *stream) do { clearerr(stream); + errno = 0; ret = fgets(s, size, stream); } while (ret == NULL && ferror(stream) && errno == EINTR); return ret; } -#define close_delete_and_die(s...) { \ - close_and_delete_outfile(output, fname_out, do_continue); \ - bb_error_msg_and_die(s); } - - -#ifdef CONFIG_FEATURE_WGET_AUTHENTICATION -/* - * Base64-encode character string and return the string. - */ -static char *base64enc(unsigned char *p, char *buf, int len) +#if ENABLE_FEATURE_WGET_AUTHENTICATION +/* Base64-encode character string. buf is assumed to be char buf[512]. */ +static char *base64enc_512(char buf[512], const char *str) { - bb_uuencode(p, buf, len, bb_uuenc_tbl_base64); + unsigned len = strlen(str); + if (len > 512/4*3 - 10) /* paranoia */ + len = 512/4*3 - 10; + bb_uuencode(buf, str, len, bb_uuenc_tbl_base64); return buf; } #endif -#define WGET_OPT_CONTINUE 1 -#define WGET_OPT_QUIET 2 -#define WGET_OPT_PASSIVE 4 -#define WGET_OPT_OUTNAME 8 -#define WGET_OPT_HEADER 16 -#define WGET_OPT_PREFIX 32 -#define WGET_OPT_PROXY 64 -#define WGET_OPT_USER_AGENT 128 - -#if ENABLE_FEATURE_WGET_LONG_OPTIONS -static const struct option wget_long_options[] = { - { "continue", 0, NULL, 'c' }, - { "quiet", 0, NULL, 'q' }, - { "passive-ftp", 0, NULL, 139 }, - { "output-document", 1, NULL, 'O' }, - { "header", 1, NULL, 131 }, - { "directory-prefix",1, NULL, 'P' }, - { "proxy", 1, NULL, 'Y' }, - { "user-agent", 1, NULL, 'U' }, - { 0, 0, 0, 0 } -}; -#endif - -int wget_main(int argc, char **argv) +static char* sanitize_string(char *s) { - int n, try=5, status; - unsigned long opt; - int port; - char *proxy = 0; - char *dir_prefix=NULL; - char *s, buf[512]; - struct stat sbuf; - char extra_headers[1024]; - char *extra_headers_ptr = extra_headers; - int extra_headers_left = sizeof(extra_headers); - struct host_info server, target; - struct sockaddr_in s_in; - llist_t *headers_llist = NULL; - - FILE *sfp = NULL; /* socket to web/ftp server */ - FILE *dfp = NULL; /* socket to ftp server (data) */ - char *fname_out = NULL; /* where to direct output (-O) */ - int do_continue = 0; /* continue a prev transfer (-c) */ - long beg_range = 0L; /* range at which continue begins */ - int got_clen = 0; /* got content-length: from server */ - FILE *output; /* socket to web server */ - int quiet_flag = FALSE; /* Be verry, verry quiet... */ - int use_proxy = 1; /* Use proxies if env vars are set */ - char *proxy_flag = "on"; /* Use proxies if env vars are set */ - char *user_agent = "Wget"; /* Content of the "User-Agent" header field */ - - /* - * Crack command line. - */ - bb_opt_complementally = "-1:\203::"; -#if ENABLE_FEATURE_WGET_LONG_OPTIONS - bb_applet_long_options = wget_long_options; -#endif - opt = bb_getopt_ulflags(argc, argv, "cq\213O:\203:P:Y:U:", - &fname_out, &headers_llist, - &dir_prefix, &proxy_flag, &user_agent); - if (opt & WGET_OPT_CONTINUE) { - ++do_continue; - } - if (opt & WGET_OPT_QUIET) { - quiet_flag = TRUE; - } - if (strcmp(proxy_flag, "off") == 0) { - /* Use the proxy if necessary. */ - use_proxy = 0; - } - if (opt & WGET_OPT_HEADER) { - while (headers_llist) { - int arglen = strlen(headers_llist->data); - if (extra_headers_left - arglen - 2 <= 0) - bb_error_msg_and_die("extra_headers buffer too small " - "(need %i)", extra_headers_left - arglen); - strcpy(extra_headers_ptr, headers_llist->data); - extra_headers_ptr += arglen; - extra_headers_left -= ( arglen + 2 ); - *extra_headers_ptr++ = '\r'; - *extra_headers_ptr++ = '\n'; - *(extra_headers_ptr + 1) = 0; - headers_llist = headers_llist->link; - } - } - - parse_url(argv[optind], &target); - server.host = target.host; - server.port = target.port; - - /* - * Use the proxy if necessary. - */ - if (use_proxy) { - proxy = getenv(target.is_ftp ? "ftp_proxy" : "http_proxy"); - if (proxy && *proxy) { - parse_url(xstrdup(proxy), &server); - } else { - use_proxy = 0; - } - } - - /* Guess an output filename */ - if (!fname_out) { - // Dirty hack. Needed because bb_get_last_path_component - // will destroy trailing / by storing '\0' in last byte! - if (*target.path && target.path[strlen(target.path)-1] != '/') { - fname_out = -#ifdef CONFIG_FEATURE_WGET_STATUSBAR - curfile = -#endif - bb_get_last_path_component(target.path); - } - if (fname_out == NULL || strlen(fname_out) < 1) { - fname_out = -#ifdef CONFIG_FEATURE_WGET_STATUSBAR - curfile = -#endif - "index.html"; - } - if (dir_prefix != NULL) - fname_out = concat_path_file(dir_prefix, fname_out); -#ifdef CONFIG_FEATURE_WGET_STATUSBAR - } else { - curfile = bb_get_last_path_component(fname_out); -#endif - } - if (do_continue && !fname_out) - bb_error_msg_and_die("cannot specify continue (-c) without a filename (-O)"); - - - /* - * Open the output file stream. - */ - if (strcmp(fname_out, "-") == 0) { - output = stdout; - quiet_flag = TRUE; - } else { - output = xfopen(fname_out, (do_continue ? "a" : "w")); - } - - /* - * Determine where to start transfer. - */ - if (do_continue) { - if (fstat(fileno(output), &sbuf) < 0) - bb_perror_msg_and_die("fstat"); - if (sbuf.st_size > 0) - beg_range = sbuf.st_size; - else - do_continue = 0; - } - - /* We want to do exactly _one_ DNS lookup, since some - * sites (i.e. ftp.us.debian.org) use round-robin DNS - * and we want to connect to only one IP... */ - bb_lookup_host(&s_in, server.host); - s_in.sin_port = server.port; - if (quiet_flag == FALSE) { - printf("Connecting to %s[%s]:%d\n", - server.host, inet_ntoa(s_in.sin_addr), ntohs(server.port)); - } - - if (use_proxy || !target.is_ftp) { - /* - * HTTP session - */ - do { - got_clen = chunked = 0; - - if (!--try) - close_delete_and_die("too many redirections"); - - /* - * Open socket to http server - */ - if (sfp) fclose(sfp); - sfp = open_socket(&s_in); - - /* - * Send HTTP request. - */ - if (use_proxy) { - const char *format = "GET %stp://%s:%d/%s HTTP/1.1\r\n"; -#ifdef CONFIG_FEATURE_WGET_IP6_LITERAL - if (strchr(target.host, ':')) - format = "GET %stp://[%s]:%d/%s HTTP/1.1\r\n"; -#endif - fprintf(sfp, format, - target.is_ftp ? "f" : "ht", target.host, - ntohs(target.port), target.path); - } else { - fprintf(sfp, "GET /%s HTTP/1.1\r\n", target.path); - } - - fprintf(sfp, "Host: %s\r\nUser-Agent: %s\r\n", target.host, - user_agent); - -#ifdef CONFIG_FEATURE_WGET_AUTHENTICATION - if (target.user) { - fprintf(sfp, "Authorization: Basic %s\r\n", - base64enc((unsigned char*)target.user, buf, sizeof(buf))); - } - if (use_proxy && server.user) { - fprintf(sfp, "Proxy-Authorization: Basic %s\r\n", - base64enc((unsigned char*)server.user, buf, sizeof(buf))); - } -#endif - - if (do_continue) - fprintf(sfp, "Range: bytes=%ld-\r\n", beg_range); - if(extra_headers_left < sizeof(extra_headers)) - fputs(extra_headers,sfp); - fprintf(sfp,"Connection: close\r\n\r\n"); - - /* - * Retrieve HTTP response line and check for "200" status code. - */ -read_response: - if (fgets(buf, sizeof(buf), sfp) == NULL) - close_delete_and_die("no response from server"); - - for (s = buf ; *s != '\0' && !isspace(*s) ; ++s) - ; - for ( ; isspace(*s) ; ++s) - ; - switch (status = atoi(s)) { - case 0: - case 100: - while (gethdr(buf, sizeof(buf), sfp, &n) != NULL); - goto read_response; - case 200: - if (do_continue && output != stdout) - output = freopen(fname_out, "w", output); - do_continue = 0; - break; - case 300: /* redirection */ - case 301: - case 302: - case 303: - break; - case 206: - if (do_continue) - break; - /*FALLTHRU*/ - default: - chomp(buf); - close_delete_and_die("server returned error %d: %s", atoi(s), buf); - } - - /* - * Retrieve HTTP headers. - */ - while ((s = gethdr(buf, sizeof(buf), sfp, &n)) != NULL) { - if (strcasecmp(buf, "content-length") == 0) { - unsigned long value; - if (safe_strtoul(s, &value)) { - close_delete_and_die("content-length %s is garbage", s); - } - filesize = value; - got_clen = 1; - continue; - } - if (strcasecmp(buf, "transfer-encoding") == 0) { - if (strcasecmp(s, "chunked") == 0) { - chunked = got_clen = 1; - } else { - close_delete_and_die("server wants to do %s transfer encoding", s); - } - } - if (strcasecmp(buf, "location") == 0) { - if (s[0] == '/') - target.path = xstrdup(s+1); - else { - parse_url(xstrdup(s), &target); - if (use_proxy == 0) { - server.host = target.host; - server.port = target.port; - } - bb_lookup_host(&s_in, server.host); - s_in.sin_port = server.port; - break; - } - } - } - } while(status >= 300); - - dfp = sfp; - } - else - { - /* - * FTP session - */ - if (!target.user) - target.user = xstrdup("anonymous:busybox@"); - - sfp = open_socket(&s_in); - if (ftpcmd(NULL, NULL, sfp, buf) != 220) - close_delete_and_die("%s", buf+4); - - /* - * Splitting username:password pair, - * trying to log in - */ - s = strchr(target.user, ':'); - if (s) - *(s++) = '\0'; - switch(ftpcmd("USER ", target.user, sfp, buf)) { - case 230: - break; - case 331: - if (ftpcmd("PASS ", s, sfp, buf) == 230) - break; - /* FALLTHRU (failed login) */ - default: - close_delete_and_die("ftp login: %s", buf+4); - } - - ftpcmd("TYPE I", NULL, sfp, buf); - - /* - * Querying file size - */ - if (ftpcmd("SIZE ", target.path, sfp, buf) == 213) { - unsigned long value; - if (safe_strtoul(buf+4, &value)) { - close_delete_and_die("SIZE value is garbage"); - } - filesize = value; - got_clen = 1; - } + unsigned char *p = (void *) s; + while (*p >= ' ') + p++; + *p = '\0'; + return s; +} - /* - * Entering passive mode - */ - if (ftpcmd("PASV", NULL, sfp, buf) != 227) - close_delete_and_die("PASV: %s", buf+4); - s = strrchr(buf, ','); - *s = 0; - port = atoi(s+1); - s = strrchr(buf, ','); - port += atoi(s+1) * 256; - s_in.sin_port = htons(port); - dfp = open_socket(&s_in); - - if (do_continue) { - sprintf(buf, "REST %ld", beg_range); - if (ftpcmd(buf, NULL, sfp, buf) != 350) { - if (output != stdout) - output = freopen(fname_out, "w", output); - do_continue = 0; - } else - filesize -= beg_range; - } +static FILE *open_socket(len_and_sockaddr *lsa) +{ + FILE *fp; - if (ftpcmd("RETR ", target.path, sfp, buf) > 150) - close_delete_and_die("RETR: %s", buf+4); - } + /* glibc 2.4 seems to try seeking on it - ??! */ + /* hopefully it understands what ESPIPE means... */ + fp = fdopen(xconnect_stream(lsa), "r+"); + if (fp == NULL) + bb_perror_msg_and_die("fdopen"); + return fp; +} - /* - * Retrieve file - */ - if (chunked) { - fgets(buf, sizeof(buf), dfp); - filesize = strtol(buf, (char **) NULL, 16); +static int ftpcmd(const char *s1, const char *s2, FILE *fp, char *buf) +{ + int result; + if (s1) { + if (!s2) s2 = ""; + fprintf(fp, "%s%s\r\n", s1, s2); + fflush(fp); } - if (quiet_flag == FALSE) - progressmeter(-1); - do { - while (filesize > 0 || !got_clen) { - unsigned rdsz = sizeof(buf); - if (filesize < sizeof(buf) && (chunked || got_clen)) - rdsz = filesize; - n = safe_fread(buf, 1, rdsz, dfp); - if (n <= 0) - break; - if (safe_fwrite(buf, 1, n, output) != n) { - bb_perror_msg_and_die(bb_msg_write_error); - } -#ifdef CONFIG_FEATURE_WGET_STATUSBAR - transferred += n; -#endif - if (got_clen) { - filesize -= n; - } - } + char *buf_ptr; - if (chunked) { - safe_fgets(buf, sizeof(buf), dfp); /* This is a newline */ - safe_fgets(buf, sizeof(buf), dfp); - filesize = strtol(buf, (char **) NULL, 16); - if (filesize == 0) { - chunked = 0; /* all done! */ - } + if (fgets(buf, 510, fp) == NULL) { + bb_perror_msg_and_die("error getting response"); } - - if (n == 0 && ferror(dfp)) { - bb_perror_msg_and_die(bb_msg_read_error); + buf_ptr = strstr(buf, "\r\n"); + if (buf_ptr) { + *buf_ptr = '\0'; } - } while (chunked); - - if (quiet_flag == FALSE) - progressmeter(1); + } while (!isdigit(buf[0]) || buf[3] != ' '); - if ((use_proxy == 0) && target.is_ftp) { - fclose(dfp); - if (ftpcmd(NULL, NULL, sfp, buf) != 226) - bb_error_msg_and_die("ftp error: %s", buf+4); - ftpcmd("QUIT", NULL, sfp, buf); - } - exit(EXIT_SUCCESS); + buf[3] = '\0'; + result = xatoi_u(buf); + buf[3] = ' '; + return result; } - -void parse_url(char *url, struct host_info *h) +static void parse_url(char *src_url, struct host_info *h) { - char *cp, *sp, *up, *pp; + char *url, *p, *sp; + + /* h->allocated = */ url = xstrdup(src_url); if (strncmp(url, "http://", 7) == 0) { h->port = bb_lookup_port("http", "tcp", 80); h->host = url + 7; h->is_ftp = 0; } else if (strncmp(url, "ftp://", 6) == 0) { - h->port = bb_lookup_port("ftp", "tfp", 21); + h->port = bb_lookup_port("ftp", "tcp", 21); h->host = url + 6; h->is_ftp = 1; } else - bb_error_msg_and_die("not an http or ftp url: %s", url); - + bb_error_msg_and_die("not an http or ftp url: %s", sanitize_string(url)); + + // FYI: + // "Real" wget 'http://busybox.net?var=a/b' sends this request: + // 'GET /?var=a/b HTTP 1.0' + // and saves 'index.html?var=a%2Fb' (we save 'b') + // wget 'http://busybox.net?login=john@doe': + // request: 'GET /?login=john@doe HTTP/1.0' + // saves: 'index.html?login=john@doe' (we save '?login=john@doe') + // wget 'http://busybox.net#test/test': + // request: 'GET / HTTP/1.0' + // saves: 'index.html' (we save 'test') + // + // We also don't add unique .N suffix if file exists... sp = strchr(h->host, '/'); - if (sp) { - *sp++ = '\0'; + p = strchr(h->host, '?'); if (!sp || (p && sp > p)) sp = p; + p = strchr(h->host, '#'); if (!sp || (p && sp > p)) sp = p; + if (!sp) { + h->path = ""; + } else if (*sp == '/') { + *sp = '\0'; + h->path = sp + 1; + } else { // '#' or '?' + // http://busybox.net?login=john@doe is a valid URL + // memmove converts to: + // http:/busybox.nett?login=john@doe... + memmove(h->host - 1, h->host, sp - h->host); + h->host--; + sp[-1] = '\0'; h->path = sp; - } else - h->path = xstrdup(""); - - up = strrchr(h->host, '@'); - if (up != NULL) { - h->user = h->host; - *up++ = '\0'; - h->host = up; - } else - h->user = NULL; - - pp = h->host; - -#ifdef CONFIG_FEATURE_WGET_IP6_LITERAL - if (h->host[0] == '[') { - char *ep; - - ep = h->host + 1; - while (*ep == ':' || isxdigit (*ep)) - ep++; - if (*ep == ']') { - h->host++; - *ep = '\0'; - pp = ep + 1; - } - } -#endif - - cp = strchr(pp, ':'); - if (cp != NULL) { - *cp++ = '\0'; - h->port = htons(atoi(cp)); } -} + // We used to set h->user to NULL here, but this interferes + // with handling of code 302 ("object was moved") -FILE *open_socket(struct sockaddr_in *s_in) -{ - FILE *fp; - - fp = fdopen(xconnect(s_in), "r+"); - if (fp == NULL) - bb_perror_msg_and_die("fdopen"); + sp = strrchr(h->host, '@'); + if (sp != NULL) { + h->user = h->host; + *sp = '\0'; + h->host = sp + 1; + } - return fp; + sp = h->host; } - -char *gethdr(char *buf, size_t bufsiz, FILE *fp, int *istrunc) +static char *gethdr(char *buf, size_t bufsiz, FILE *fp /*, int *istrunc*/) { char *s, *hdrval; int c; - *istrunc = 0; + /* *istrunc = 0; */ /* retrieve header line */ if (fgets(buf, bufsiz, fp) == NULL) return NULL; /* see if we are at the end of the headers */ - for (s = buf ; *s == '\r' ; ++s) - ; - if (s[0] == '\n') + for (s = buf; *s == '\r'; ++s) + continue; + if (*s == '\n') return NULL; /* convert the header name to lower case */ - for (s = buf ; isalnum(*s) || *s == '-' ; ++s) + for (s = buf; isalnum(*s) || *s == '-' || *s == '.'; ++s) *s = tolower(*s); /* verify we are at the end of the header name */ if (*s != ':') - bb_error_msg_and_die("bad header line: %s", buf); + bb_error_msg_and_die("bad header line: %s", sanitize_string(buf)); /* locate the start of the header value */ - for (*s++ = '\0' ; *s == ' ' || *s == '\t' ; ++s) - ; - hdrval = s; + *s++ = '\0'; + hdrval = skip_whitespace(s); /* locate the end of header */ - while (*s != '\0' && *s != '\r' && *s != '\n') + while (*s && *s != '\r' && *s != '\n') ++s; /* end of header found */ - if (*s != '\0') { + if (*s) { *s = '\0'; return hdrval; } - /* Rats! The buffer isn't big enough to hold the entire header value. */ + /* Rats! The buffer isn't big enough to hold the entire header value */ while (c = getc(fp), c != EOF && c != '\n') - ; - *istrunc = 1; + continue; + /* *istrunc = 1; */ return hdrval; } -static int ftpcmd(char *s1, char *s2, FILE *fp, char *buf) +#if ENABLE_FEATURE_WGET_LONG_OPTIONS +static char *URL_escape(const char *str) { - if (s1) { - if (!s2) s2=""; - fprintf(fp, "%s%s\r\n", s1, s2); - fflush(fp); + /* URL encode, see RFC 2396 */ + char *dst; + char *res = dst = xmalloc(strlen(str) * 3 + 1); + unsigned char c; + + while (1) { + c = *str++; + if (c == '\0' + /* || strchr("!&'()*-.=_~", c) - more code */ + || c == '!' + || c == '&' + || c == '\'' + || c == '(' + || c == ')' + || c == '*' + || c == '-' + || c == '.' + || c == '=' + || c == '_' + || c == '~' + || (c >= '0' && c <= '9') + || ((c|0x20) >= 'a' && (c|0x20) <= 'z') + ) { + *dst++ = c; + if (c == '\0') + return res; + } else { + *dst++ = '%'; + *dst++ = bb_hexdigits_upcase[c >> 4]; + *dst++ = bb_hexdigits_upcase[c & 0xf]; + } } +} +#endif - do { - char *buf_ptr; +static FILE* prepare_ftp_session(FILE **dfpp, struct host_info *target, len_and_sockaddr *lsa) +{ + char buf[512]; + FILE *sfp; + char *str; + int port; - if (fgets(buf, 510, fp) == NULL) { - bb_perror_msg_and_die("fgets"); - } - buf_ptr = strstr(buf, "\r\n"); - if (buf_ptr) { - *buf_ptr = '\0'; - } - } while (!isdigit(buf[0]) || buf[3] != ' '); + if (!target->user) + target->user = xstrdup("anonymous:busybox@"); - return atoi(buf); -} + sfp = open_socket(lsa); + if (ftpcmd(NULL, NULL, sfp, buf) != 220) + bb_error_msg_and_die("%s", sanitize_string(buf+4)); -#ifdef CONFIG_FEATURE_WGET_STATUSBAR -/* Stuff below is from BSD rcp util.c, as added to openshh. - * Original copyright notice is retained at the end of this file. - * - */ + /* + * Splitting username:password pair, + * trying to log in + */ + str = strchr(target->user, ':'); + if (str) + *str++ = '\0'; + switch (ftpcmd("USER ", target->user, sfp, buf)) { + case 230: + break; + case 331: + if (ftpcmd("PASS ", str, sfp, buf) == 230) + break; + /* fall through (failed login) */ + default: + bb_error_msg_and_die("ftp login: %s", sanitize_string(buf+4)); + } + ftpcmd("TYPE I", NULL, sfp, buf); -static int -getttywidth(void) -{ - int width=0; - get_terminal_width_height(0, &width, NULL); - return (width); + /* + * Querying file size + */ + if (ftpcmd("SIZE ", target->path, sfp, buf) == 213) { + content_len = BB_STRTOOFF(buf+4, NULL, 10); + if (errno || content_len < 0) { + bb_error_msg_and_die("SIZE value is garbage"); + } + G.got_clen = 1; + } + + /* + * Entering passive mode + */ + if (ftpcmd("PASV", NULL, sfp, buf) != 227) { + pasv_error: + bb_error_msg_and_die("bad response to %s: %s", "PASV", sanitize_string(buf)); + } + // Response is "227 garbageN1,N2,N3,N4,P1,P2[)garbage] + // Server's IP is N1.N2.N3.N4 (we ignore it) + // Server's port for data connection is P1*256+P2 + str = strrchr(buf, ')'); + if (str) str[0] = '\0'; + str = strrchr(buf, ','); + if (!str) goto pasv_error; + port = xatou_range(str+1, 0, 255); + *str = '\0'; + str = strrchr(buf, ','); + if (!str) goto pasv_error; + port += xatou_range(str+1, 0, 255) * 256; + set_nport(lsa, htons(port)); + + *dfpp = open_socket(lsa); + + if (beg_range) { + sprintf(buf, "REST %"OFF_FMT"d", beg_range); + if (ftpcmd(buf, NULL, sfp, buf) == 350) + content_len -= beg_range; + } + + if (ftpcmd("RETR ", target->path, sfp, buf) > 150) + bb_error_msg_and_die("bad response to %s: %s", "RETR", sanitize_string(buf)); + + return sfp; } -static void -updateprogressmeter(int ignore) +/* Must match option string! */ +enum { + WGET_OPT_CONTINUE = (1 << 0), + WGET_OPT_SPIDER = (1 << 1), + WGET_OPT_QUIET = (1 << 2), + WGET_OPT_OUTNAME = (1 << 3), + WGET_OPT_PREFIX = (1 << 4), + WGET_OPT_PROXY = (1 << 5), + WGET_OPT_USER_AGENT = (1 << 6), + WGET_OPT_RETRIES = (1 << 7), + WGET_OPT_NETWORK_READ_TIMEOUT = (1 << 8), + WGET_OPT_PASSIVE = (1 << 9), + WGET_OPT_HEADER = (1 << 10) * ENABLE_FEATURE_WGET_LONG_OPTIONS, + WGET_OPT_POST_DATA = (1 << 11) * ENABLE_FEATURE_WGET_LONG_OPTIONS, +}; + +static void NOINLINE retrieve_file_data(FILE *dfp, int output_fd) { - int save_errno = errno; + char buf[512]; - progressmeter(0); - errno = save_errno; + if (!(option_mask32 & WGET_OPT_QUIET)) + progress_meter(-1); + + if (G.chunked) + goto get_clen; + + /* Loops only if chunked */ + while (1) { + while (content_len > 0 || !G.got_clen) { + int n; + unsigned rdsz = sizeof(buf); + + if (content_len < sizeof(buf) && (G.chunked || G.got_clen)) + rdsz = (unsigned)content_len; + n = safe_fread(buf, rdsz, dfp); + if (n <= 0) { + if (ferror(dfp)) { + /* perror will not work: ferror doesn't set errno */ + bb_error_msg_and_die(bb_msg_read_error); + } + break; + } + xwrite(output_fd, buf, n); +#if ENABLE_FEATURE_WGET_STATUSBAR + transferred += n; +#endif + if (G.got_clen) + content_len -= n; + } + + if (!G.chunked) + break; + + safe_fgets(buf, sizeof(buf), dfp); /* This is a newline */ + get_clen: + safe_fgets(buf, sizeof(buf), dfp); + content_len = STRTOOFF(buf, NULL, 16); + /* FIXME: error check? */ + if (content_len == 0) + break; /* all done! */ + } + + if (!(option_mask32 & WGET_OPT_QUIET)) + progress_meter(0); } -static void alarmtimer(int iwait) +int wget_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; +int wget_main(int argc UNUSED_PARAM, char **argv) { - struct itimerval itv; + char buf[512]; + struct host_info server, target; + len_and_sockaddr *lsa; + unsigned opt; + int redir_limit; + char *proxy = NULL; + char *dir_prefix = NULL; +#if ENABLE_FEATURE_WGET_LONG_OPTIONS + char *post_data; + char *extra_headers = NULL; + llist_t *headers_llist = NULL; +#endif + FILE *sfp; /* socket to web/ftp server */ + FILE *dfp; /* socket to ftp server (data) */ + char *fname_out; /* where to direct output (-O) */ + int output_fd = -1; + bool use_proxy; /* Use proxies if env vars are set */ + const char *proxy_flag = "on"; /* Use proxies if env vars are set */ + const char *user_agent = "Wget";/* "User-Agent" header field */ + + static const char keywords[] ALIGN1 = + "content-length\0""transfer-encoding\0""chunked\0""location\0"; + enum { + KEY_content_length = 1, KEY_transfer_encoding, KEY_chunked, KEY_location + }; +#if ENABLE_FEATURE_WGET_LONG_OPTIONS + static const char wget_longopts[] ALIGN1 = + /* name, has_arg, val */ + "continue\0" No_argument "c" + "spider\0" No_argument "s" + "quiet\0" No_argument "q" + "output-document\0" Required_argument "O" + "directory-prefix\0" Required_argument "P" + "proxy\0" Required_argument "Y" + "user-agent\0" Required_argument "U" + /* Ignored: */ + // "tries\0" Required_argument "t" + // "timeout\0" Required_argument "T" + /* Ignored (we always use PASV): */ + "passive-ftp\0" No_argument "\xff" + "header\0" Required_argument "\xfe" + "post-data\0" Required_argument "\xfd" + ; +#endif - itv.it_value.tv_sec = iwait; - itv.it_value.tv_usec = 0; - itv.it_interval = itv.it_value; - setitimer(ITIMER_REAL, &itv, NULL); -} + INIT_G(); +#if ENABLE_FEATURE_WGET_LONG_OPTIONS + applet_long_options = wget_longopts; +#endif + /* server.allocated = target.allocated = NULL; */ + opt_complementary = "-1" IF_FEATURE_WGET_LONG_OPTIONS(":\xfe::"); + opt = getopt32(argv, "csqO:P:Y:U:" /*ignored:*/ "t:T:", + &fname_out, &dir_prefix, + &proxy_flag, &user_agent, + NULL, /* -t RETRIES */ + NULL /* -T NETWORK_READ_TIMEOUT */ + IF_FEATURE_WGET_LONG_OPTIONS(, &headers_llist) + IF_FEATURE_WGET_LONG_OPTIONS(, &post_data) + ); +#if ENABLE_FEATURE_WGET_LONG_OPTIONS + if (headers_llist) { + int size = 1; + char *cp; + llist_t *ll = headers_llist; + while (ll) { + size += strlen(ll->data) + 2; + ll = ll->link; + } + extra_headers = cp = xmalloc(size); + while (headers_llist) { + cp += sprintf(cp, "%s\r\n", (char*)llist_pop(&headers_llist)); + } + } +#endif -static void -progressmeter(int flag) -{ - static struct timeval lastupdate; - static off_t lastsize, totalsize; + /* TODO: compat issue: should handle "wget URL1 URL2..." */ - struct timeval now, td, tvwait; - off_t abbrevsize; - int elapsed, ratio, barlength, i; - char buf[256]; + target.user = NULL; + parse_url(argv[optind], &target); - if (flag == -1) { - (void) gettimeofday(&start, (struct timezone *) 0); - lastupdate = start; - lastsize = 0; - totalsize = filesize; /* as filesize changes.. */ + /* Use the proxy if necessary */ + use_proxy = (strcmp(proxy_flag, "off") != 0); + if (use_proxy) { + proxy = getenv(target.is_ftp ? "ftp_proxy" : "http_proxy"); + if (proxy && proxy[0]) { + parse_url(proxy, &server); + } else { + use_proxy = 0; + } + } + if (!use_proxy) { + server.port = target.port; + if (ENABLE_FEATURE_IPV6) { + server.host = xstrdup(target.host); + } else { + server.host = target.host; + } } - (void) gettimeofday(&now, (struct timezone *) 0); - ratio = 100; - if (totalsize != 0 && !chunked) { - ratio = (int) (100 * transferred / totalsize); - ratio = MIN(ratio, 100); + if (ENABLE_FEATURE_IPV6) + strip_ipv6_scope_id(target.host); + + /* Guess an output filename, if there was no -O FILE */ + if (!(opt & WGET_OPT_OUTNAME)) { + fname_out = bb_get_last_path_component_nostrip(target.path); + /* handle "wget http://kernel.org//" */ + if (fname_out[0] == '/' || !fname_out[0]) + fname_out = (char*)"index.html"; + /* -P DIR is considered only if there was no -O FILE */ + if (dir_prefix) + fname_out = concat_path_file(dir_prefix, fname_out); + } else { + if (LONE_DASH(fname_out)) { + /* -O - */ + output_fd = 1; + opt &= ~WGET_OPT_CONTINUE; + } } +#if ENABLE_FEATURE_WGET_STATUSBAR + curfile = bb_get_last_path_component_nostrip(fname_out); +#endif - fprintf(stderr, "\r%-20.20s%4d%% ", curfile, ratio); + /* Impossible? + if ((opt & WGET_OPT_CONTINUE) && !fname_out) + bb_error_msg_and_die("cannot specify continue (-c) without a filename (-O)"); + */ - barlength = getttywidth() - 51; - if (barlength > 0 && barlength < sizeof(buf)) { - i = barlength * ratio / 100; - memset(buf, '*', i); - memset(buf + i, ' ', barlength - i); - buf[barlength] = '\0'; - fprintf(stderr, "|%s|", buf); - } - i = 0; - abbrevsize = transferred; - while (abbrevsize >= 100000) { - i++; - abbrevsize >>= 10; + /* Determine where to start transfer */ + if (opt & WGET_OPT_CONTINUE) { + output_fd = open(fname_out, O_WRONLY); + if (output_fd >= 0) { + beg_range = xlseek(output_fd, 0, SEEK_END); + } + /* File doesn't exist. We do not create file here yet. + * We are not sure it exists on remove side */ } - /* See http://en.wikipedia.org/wiki/Tera */ - fprintf(stderr, "%6d %c%c ", (int)abbrevsize, " KMGTPEZY"[i], i?'B':' '); - timersub(&now, &lastupdate, &tvwait); - if (transferred > lastsize) { - lastupdate = now; - lastsize = transferred; - if (tvwait.tv_sec >= STALLTIME) - timeradd(&start, &tvwait, &start); - tvwait.tv_sec = 0; + redir_limit = 5; + resolve_lsa: + lsa = xhost2sockaddr(server.host, server.port); + if (!(opt & WGET_OPT_QUIET)) { + char *s = xmalloc_sockaddr2dotted(&lsa->u.sa); + fprintf(stderr, "Connecting to %s (%s)\n", server.host, s); + free(s); } - timersub(&now, &start, &td); - elapsed = td.tv_sec; + establish_session: + if (use_proxy || !target.is_ftp) { + /* + * HTTP session + */ + char *str; + int status; + + /* Open socket to http server */ + sfp = open_socket(lsa); + + /* Send HTTP request */ + if (use_proxy) { + fprintf(sfp, "GET %stp://%s/%s HTTP/1.1\r\n", + target.is_ftp ? "f" : "ht", target.host, + target.path); + } else { + if (opt & WGET_OPT_POST_DATA) + fprintf(sfp, "POST /%s HTTP/1.1\r\n", target.path); + else + fprintf(sfp, "GET /%s HTTP/1.1\r\n", target.path); + } + + fprintf(sfp, "Host: %s\r\nUser-Agent: %s\r\n", + target.host, user_agent); + +#if ENABLE_FEATURE_WGET_AUTHENTICATION + if (target.user) { + fprintf(sfp, "Proxy-Authorization: Basic %s\r\n"+6, + base64enc_512(buf, target.user)); + } + if (use_proxy && server.user) { + fprintf(sfp, "Proxy-Authorization: Basic %s\r\n", + base64enc_512(buf, server.user)); + } +#endif + + if (beg_range) + fprintf(sfp, "Range: bytes=%"OFF_FMT"d-\r\n", beg_range); +#if ENABLE_FEATURE_WGET_LONG_OPTIONS + if (extra_headers) + fputs(extra_headers, sfp); + + if (opt & WGET_OPT_POST_DATA) { + char *estr = URL_escape(post_data); + fprintf(sfp, "Content-Type: application/x-www-form-urlencoded\r\n"); + fprintf(sfp, "Content-Length: %u\r\n" "\r\n" "%s", + (int) strlen(estr), estr); + /*fprintf(sfp, "Connection: Keep-Alive\r\n\r\n");*/ + /*fprintf(sfp, "%s\r\n", estr);*/ + free(estr); + } else +#endif + { /* If "Connection:" is needed, document why */ + fprintf(sfp, /* "Connection: close\r\n" */ "\r\n"); + } + + /* + * Retrieve HTTP response line and check for "200" status code. + */ + read_response: + if (fgets(buf, sizeof(buf), sfp) == NULL) + bb_error_msg_and_die("no response from server"); + + str = buf; + str = skip_non_whitespace(str); + str = skip_whitespace(str); + // FIXME: no error check + // xatou wouldn't work: "200 OK" + status = atoi(str); + switch (status) { + case 0: + case 100: + while (gethdr(buf, sizeof(buf), sfp /*, &n*/) != NULL) + /* eat all remaining headers */; + goto read_response; + case 200: +/* +Response 204 doesn't say "null file", it says "metadata +has changed but data didn't": + +"10.2.5 204 No Content +The server has fulfilled the request but does not need to return +an entity-body, and might want to return updated metainformation. +The response MAY include new or updated metainformation in the form +of entity-headers, which if present SHOULD be associated with +the requested variant. + +If the client is a user agent, it SHOULD NOT change its document +view from that which caused the request to be sent. This response +is primarily intended to allow input for actions to take place +without causing a change to the user agent's active document view, +although any new or updated metainformation SHOULD be applied +to the document currently in the user agent's active view. + +The 204 response MUST NOT include a message-body, and thus +is always terminated by the first empty line after the header fields." + +However, in real world it was observed that some web servers +(e.g. Boa/0.94.14rc21) simply use code 204 when file size is zero. +*/ + case 204: + break; + case 300: /* redirection */ + case 301: + case 302: + case 303: + break; + case 206: + if (beg_range) + break; + /* fall through */ + default: + bb_error_msg_and_die("server returned error: %s", sanitize_string(buf)); + } + + /* + * Retrieve HTTP headers. + */ + while ((str = gethdr(buf, sizeof(buf), sfp /*, &n*/)) != NULL) { + /* gethdr converted "FOO:" string to lowercase */ + smalluint key; + /* strip trailing whitespace */ + char *s = strchrnul(str, '\0') - 1; + while (s >= str && (*s == ' ' || *s == '\t')) { + *s = '\0'; + s--; + } + key = index_in_strings(keywords, buf) + 1; + if (key == KEY_content_length) { + content_len = BB_STRTOOFF(str, NULL, 10); + if (errno || content_len < 0) { + bb_error_msg_and_die("content-length %s is garbage", sanitize_string(str)); + } + G.got_clen = 1; + continue; + } + if (key == KEY_transfer_encoding) { + if (index_in_strings(keywords, str_tolower(str)) + 1 != KEY_chunked) + bb_error_msg_and_die("transfer encoding '%s' is not supported", sanitize_string(str)); + G.chunked = G.got_clen = 1; + } + if (key == KEY_location && status >= 300) { + if (--redir_limit == 0) + bb_error_msg_and_die("too many redirections"); + fclose(sfp); + G.got_clen = 0; + G.chunked = 0; + if (str[0] == '/') + /* free(target.allocated); */ + target.path = /* target.allocated = */ xstrdup(str+1); + /* lsa stays the same: it's on the same server */ + else { + parse_url(str, &target); + if (!use_proxy) { + server.host = target.host; + /* strip_ipv6_scope_id(target.host); - no! */ + /* we assume remote never gives us IPv6 addr with scope id */ + server.port = target.port; + free(lsa); + goto resolve_lsa; + } /* else: lsa stays the same: we use proxy */ + } + goto establish_session; + } + } +// if (status >= 300) +// bb_error_msg_and_die("bad redirection (no Location: header from server)"); + + /* For HTTP, data is pumped over the same connection */ + dfp = sfp; - if (tvwait.tv_sec >= STALLTIME) { - fprintf(stderr, " - stalled -"); - } else if (transferred <= 0 || elapsed <= 0 || transferred > totalsize || chunked) { - fprintf(stderr, "--:--:-- ETA"); } else { - /* totalsize / (transferred/elapsed) - elapsed: */ - int eta = (int) (totalsize*elapsed/transferred - elapsed); - i = eta % 3600; - fprintf(stderr, "%02d:%02d:%02d ETA", eta / 3600, i / 60, i % 60); + /* + * FTP session + */ + sfp = prepare_ftp_session(&dfp, &target, lsa); } - if (flag == -1) { - struct sigaction sa; - sa.sa_handler = updateprogressmeter; - sigemptyset(&sa.sa_mask); - sa.sa_flags = SA_RESTART; - sigaction(SIGALRM, &sa, NULL); - alarmtimer(1); - } else if (flag == 1) { - alarmtimer(0); - transferred = 0; - putc('\n', stderr); + if (opt & WGET_OPT_SPIDER) { + if (ENABLE_FEATURE_CLEAN_UP) + fclose(sfp); + return EXIT_SUCCESS; } -} -#endif -/* Original copyright notice which applies to the CONFIG_FEATURE_WGET_STATUSBAR stuff, - * much of which was blatantly stolen from openssh. */ + if (output_fd < 0) { + int o_flags = O_WRONLY | O_CREAT | O_TRUNC | O_EXCL; + /* compat with wget: -O FILE can overwrite */ + if (opt & WGET_OPT_OUTNAME) + o_flags = O_WRONLY | O_CREAT | O_TRUNC; + output_fd = xopen(fname_out, o_flags); + } -/*- - * Copyright (c) 1992, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * 3. - * - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $Id: wget.c,v 1.75 2004/10/08 08:27:40 andersen Exp $ - */ + retrieve_file_data(dfp, output_fd); + + if (dfp != sfp) { + /* It's ftp. Close it properly */ + fclose(dfp); + if (ftpcmd(NULL, NULL, sfp, buf) != 226) + bb_error_msg_and_die("ftp error: %s", sanitize_string(buf+4)); + ftpcmd("QUIT", NULL, sfp, buf); + } + + return EXIT_SUCCESS; +}