X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=networking%2Fwget.c;h=7dd1d36f90a0a624a1ab7da2f376a7496818dabd;hb=c4f12f59cc907577d787f816b37122809f896bb2;hp=2c060d77d5f170aaed829c1c1ac176d128dfab62;hpb=b6adbf1be29841501cc49917249e85f273e1df7c;p=oweals%2Fbusybox.git diff --git a/networking/wget.c b/networking/wget.c index 2c060d77d..7dd1d36f9 100644 --- a/networking/wget.c +++ b/networking/wget.c @@ -6,62 +6,211 @@ * */ -/* We want libc to give us xxx64 functions also */ -/* http://www.unix.org/version2/whatsnew/lfs20mar.html */ -#define _LARGEFILE64_SOURCE 1 - -#include /* for struct option */ #include "libbb.h" struct host_info { // May be used if we ever will want to free() all xstrdup()s... /* char *allocated; */ - char *host; - int port; - char *path; - int is_ftp; - char *user; + 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(len_and_sockaddr *lsa); -static char *gethdr(char *buf, size_t bufsiz, FILE *fp, int *istrunc); -static int ftpcmd(const char *s1, const char *s2, FILE *fp, char *buf); -/* Globals (can be accessed from signal handlers */ -static off_t content_len; /* Content-length of the file */ -static off_t beg_range; /* Range at which continue begins */ +/* 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 -static off_t transferred; /* Number of bytes transferred so far */ + 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 -static bool chunked; /* chunked transfer encoding */ + smallint chunked; /* chunked transfer encoding */ +}; +#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 chunked (G.chunked ) +#define INIT_G() do { } while (0) + + #if ENABLE_FEATURE_WGET_STATUSBAR -static void progressmeter(int flag); -static const char *curfile; /* Name of current file being transferred */ -static struct timeval start; /* Time a transfer started */ enum { STALLTIME = 5 /* Seconds when xfer considered "stalled" */ }; -#else -static void progressmeter(int flag) {} + +static int getttywidth(void) +{ + int width; + get_terminal_width_height(0, &width, NULL); + return width; +} + +static void progressmeter(int flag) +{ + /* 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 progressmeter */ + start_sec = monotonic_sec(); + lastupdate_sec = start_sec; + lastsize = 0; + totalsize = content_len + beg_range; /* as content_len changes.. */ + } + + ratio = 100; + if (totalsize != 0 && !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 = getttywidth() - 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 || 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 progressmeter */ + alarm(0); + transferred = 0; + fputc('\n', stderr); + } else { + if (flag == -1) { /* first call to progressmeter */ + signal_SA_RESTART_empty_mask(SIGALRM, progressmeter); + } + 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 progressmeter(int flag ATTRIBUTE_UNUSED) { } + #endif -/* 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) + +/* 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 += fread((char *)ptr + (ret * size), size, nmemb - ret, stream); - } while (ret < nmemb && ferror(stream) && errno == EINTR); + 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) { @@ -76,21 +225,173 @@ static char *safe_fgets(char *s, int size, FILE *stream) } #if ENABLE_FEATURE_WGET_AUTHENTICATION -/* Base64-encode character string and return the string. */ -static char *base64enc(unsigned char *p, char *buf, int len) +/* 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 -int wget_main(int argc, char **argv); -int wget_main(int argc, char **argv) + +static FILE *open_socket(len_and_sockaddr *lsa) +{ + FILE *fp; + + /* 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; +} + + +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); + } + + do { + char *buf_ptr; + + if (fgets(buf, 510, fp) == NULL) { + bb_perror_msg_and_die("error getting response"); + } + buf_ptr = strstr(buf, "\r\n"); + if (buf_ptr) { + *buf_ptr = '\0'; + } + } while (!isdigit(buf[0]) || buf[3] != ' '); + + buf[3] = '\0'; + result = xatoi_u(buf); + buf[3] = ' '; + return result; +} + + +static void parse_url(char *src_url, struct host_info *h) +{ + 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", "tcp", 21); + h->host = url + 6; + h->is_ftp = 1; + } else + bb_error_msg_and_die("not an http or ftp url: %s", 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, '/'); + 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; + } + + sp = strrchr(h->host, '@'); + h->user = NULL; + if (sp != NULL) { + h->user = h->host; + *sp = '\0'; + h->host = sp + 1; + } + + sp = h->host; +} + + +static char *gethdr(char *buf, size_t bufsiz, FILE *fp /*, int *istrunc*/) +{ + char *s, *hdrval; + int c; + + /* *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) + continue; + if (*s == '\n') + return NULL; + + /* convert the header name to lower case */ + 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); + + /* locate the start of the header value */ + *s++ = '\0'; + hdrval = skip_whitespace(s); + + /* locate the end of header */ + while (*s && *s != '\r' && *s != '\n') + ++s; + + /* end of header found */ + if (*s) { + *s = '\0'; + return hdrval; + } + + /* Rats! The buffer isn't big enough to hold the entire header value. */ + while (c = getc(fp), c != EOF && c != '\n') + continue; + /* *istrunc = 1; */ + return hdrval; +} + + +int wget_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; +int wget_main(int argc ATTRIBUTE_UNUSED, char **argv) { char buf[512]; struct host_info server, target; len_and_sockaddr *lsa; - int n, status; + int status; int port; int try = 5; unsigned opt; @@ -101,18 +402,17 @@ int wget_main(int argc, char **argv) char *extra_headers = NULL; llist_t *headers_llist = NULL; #endif - 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) */ - bool got_clen = 0; /* got content-length: from server */ + FILE *dfp; /* socket to ftp server (data) */ + char *fname_out; /* where to direct output (-O) */ + bool got_clen = 0; /* got content-length: from server */ int output_fd = -1; - bool use_proxy = 1; /* Use proxies if env vars are set */ + bool use_proxy = 1; /* 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 * const keywords[] = { - "content-length", "transfer-encoding", "chunked", "location", NULL - }; + + 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 }; @@ -128,24 +428,28 @@ int wget_main(int argc, char **argv) WGET_OPT_HEADER = 0x100, }; #if ENABLE_FEATURE_WGET_LONG_OPTIONS - static const struct option wget_long_options[] = { - /* name, has_arg, flag, val */ - { "continue", no_argument, NULL, 'c' }, - { "spider", no_argument, NULL, 's' }, - { "quiet", no_argument, NULL, 'q' }, - { "output-document", required_argument, NULL, 'O' }, - { "directory-prefix", required_argument, NULL, 'P' }, - { "proxy", required_argument, NULL, 'Y' }, - { "user-agent", required_argument, NULL, 'U' }, - { "passive-ftp", no_argument, NULL, 0xff }, - { "header", required_argument, NULL, 0xfe }, - { 0, 0, 0, 0 } - }; - applet_long_options = 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" + "passive-ftp\0" No_argument "\xff" + "header\0" Required_argument "\xfe" + ; +#endif + + INIT_G(); + +#if ENABLE_FEATURE_WGET_LONG_OPTIONS + applet_long_options = wget_longopts; #endif /* server.allocated = target.allocated = NULL; */ opt_complementary = "-1" USE_FEATURE_WGET_LONG_OPTIONS(":\xfe::"); - opt = getopt32(argc, argv, "csqO:P:Y:U:", + opt = getopt32(argv, "csqO:P:Y:U:", &fname_out, &dir_prefix, &proxy_flag, &user_agent USE_FEATURE_WGET_LONG_OPTIONS(, &headers_llist) @@ -185,40 +489,31 @@ int wget_main(int argc, char **argv) } } - /* 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 (!last_char_is(target.path, '/')) { - fname_out = bb_get_last_path_component(target.path); -#if ENABLE_FEATURE_WGET_STATUSBAR - curfile = fname_out; -#endif - } - if (!fname_out || !fname_out[0]) { - /* bb_get_last_path_component writes - * to last '/' only. We don't have one here... */ + /* 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"; -#if ENABLE_FEATURE_WGET_STATUSBAR - curfile = fname_out; -#endif - } - if (dir_prefix != NULL) + /* -P DIR is considered only if there was no -O FILE */ + if (dir_prefix) fname_out = concat_path_file(dir_prefix, fname_out); -#if ENABLE_FEATURE_WGET_STATUSBAR } else { - curfile = bb_get_last_path_component(fname_out); -#endif + 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 + /* Impossible? if ((opt & WGET_OPT_CONTINUE) && !fname_out) bb_error_msg_and_die("cannot specify continue (-c) without a filename (-O)"); */ /* Determine where to start transfer */ - if (LONE_DASH(fname_out)) { - output_fd = 1; - opt &= ~WGET_OPT_CONTINUE; - } if (opt & WGET_OPT_CONTINUE) { output_fd = open(fname_out, O_WRONLY); if (output_fd >= 0) { @@ -234,7 +529,7 @@ int wget_main(int argc, char **argv) lsa = xhost2sockaddr(server.host, server.port); if (!(opt & WGET_OPT_QUIET)) { fprintf(stderr, "Connecting to %s (%s)\n", server.host, - xmalloc_sockaddr2dotted(&lsa->sa, lsa->len)); + xmalloc_sockaddr2dotted(&lsa->u.sa)); /* We leak result of xmalloc_sockaddr2dotted */ } @@ -243,7 +538,8 @@ int wget_main(int argc, char **argv) * HTTP session */ do { - got_clen = chunked = 0; + got_clen = 0; + chunked = 0; if (!--try) bb_error_msg_and_die("too many redirections"); @@ -266,12 +562,12 @@ int wget_main(int argc, char **argv) #if ENABLE_FEATURE_WGET_AUTHENTICATION if (target.user) { - fprintf(sfp, "Authorization: Basic %s\r\n", - base64enc((unsigned char*)target.user, buf, sizeof(buf))); + 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((unsigned char*)server.user, buf, sizeof(buf))); + base64enc_512(buf, server.user)); } #endif @@ -299,7 +595,7 @@ int wget_main(int argc, char **argv) switch (status) { case 0: case 100: - while (gethdr(buf, sizeof(buf), sfp, &n) != NULL) + while (gethdr(buf, sizeof(buf), sfp /*, &n*/) != NULL) /* eat all remaining headers */; goto read_response; case 200: @@ -312,7 +608,7 @@ int wget_main(int argc, char **argv) case 206: if (beg_range) break; - /*FALLTHRU*/ + /* fall through */ default: /* Show first line only and kill any ESC tricks */ buf[strcspn(buf, "\n\r\x1b")] = '\0'; @@ -322,9 +618,9 @@ int wget_main(int argc, char **argv) /* * Retrieve HTTP headers. */ - while ((str = gethdr(buf, sizeof(buf), sfp, &n)) != NULL) { + while ((str = gethdr(buf, sizeof(buf), sfp /*, &n*/)) != NULL) { /* gethdr did already convert the "FOO:" string to lowercase */ - smalluint key = index_in_str_array(keywords, *&buf) + 1; + smalluint key = index_in_strings(keywords, *&buf) + 1; if (key == KEY_content_length) { content_len = BB_STRTOOFF(str, NULL, 10); if (errno || content_len < 0) { @@ -334,8 +630,8 @@ int wget_main(int argc, char **argv) continue; } if (key == KEY_transfer_encoding) { - if (index_in_str_array(keywords, str_tolower(str)) + 1 != KEY_chunked) - bb_error_msg_and_die("server wants to do %s transfer encoding", str); + if (index_in_strings(keywords, str_tolower(str)) + 1 != KEY_chunked) + bb_error_msg_and_die("transfer encoding '%s' is not supported", str); chunked = got_clen = 1; } if (key == KEY_location) { @@ -383,7 +679,7 @@ int wget_main(int argc, char **argv) case 331: if (ftpcmd("PASS ", str, sfp, buf) == 230) break; - /* FALLTHRU (failed login) */ + /* fall through (failed login) */ default: bb_error_msg_and_die("ftp login: %s", buf+4); } @@ -430,67 +726,72 @@ int wget_main(int argc, char **argv) } if (ftpcmd("RETR ", target.path, sfp, buf) > 150) - bb_error_msg_and_die("bad response to RETR: %s", buf); + bb_error_msg_and_die("bad response to %s: %s", "RETR", buf); } + if (opt & WGET_OPT_SPIDER) { if (ENABLE_FEATURE_CLEAN_UP) fclose(sfp); - goto done; + return EXIT_SUCCESS; } /* * Retrieve file */ - if (chunked) { - fgets(buf, sizeof(buf), dfp); - content_len = STRTOOFF(buf, NULL, 16); - /* FIXME: error check?? */ - } /* Do it before progressmeter (want to have nice error message) */ - if (output_fd < 0) - output_fd = xopen(fname_out, - O_WRONLY|O_CREAT|O_EXCL|O_TRUNC); + 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); + } if (!(opt & WGET_OPT_QUIET)) progressmeter(-1); - do { + if (chunked) + goto get_clen; + + /* Loops only if chunked */ + while (1) { while (content_len > 0 || !got_clen) { + int n; unsigned rdsz = sizeof(buf); + if (content_len < sizeof(buf) && (chunked || got_clen)) rdsz = (unsigned)content_len; - n = safe_fread(buf, 1, rdsz, dfp); - if (n <= 0) + 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; - if (full_write(output_fd, buf, n) != n) { - bb_perror_msg_and_die(bb_msg_write_error); } + xwrite(output_fd, buf, n); #if ENABLE_FEATURE_WGET_STATUSBAR transferred += n; #endif - if (got_clen) { + if (got_clen) content_len -= n; - } } - if (chunked) { - safe_fgets(buf, sizeof(buf), dfp); /* This is a newline */ - safe_fgets(buf, sizeof(buf), dfp); - content_len = STRTOOFF(buf, NULL, 16); - /* FIXME: error check? */ - if (content_len == 0) { - chunked = 0; /* all done! */ - } - } + if (!chunked) + break; - if (n == 0 && ferror(dfp)) { - bb_perror_msg_and_die(bb_msg_read_error); - } - } while (chunked); + 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 (!(opt & WGET_OPT_QUIET)) - progressmeter(1); + progressmeter(0); if ((use_proxy == 0) && target.is_ftp) { fclose(dfp); @@ -498,311 +799,6 @@ int wget_main(int argc, char **argv) bb_error_msg_and_die("ftp error: %s", buf+4); ftpcmd("QUIT", NULL, sfp, buf); } -done: - exit(EXIT_SUCCESS); -} - - -static void parse_url(char *src_url, struct host_info *h) -{ - 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", "tcp", 21); - h->host = url + 6; - h->is_ftp = 1; - } else - bb_error_msg_and_die("not an http or ftp url: %s", 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, '/'); - p = strchr(h->host, '?'); if (!sp || (p && sp > p)) sp = p; - p = strchr(h->host, '#'); if (!sp || (p && sp > p)) sp = p; - if (!sp) { - /* must be writable because of bb_get_last_path_component() */ - static char nullstr[] = ""; - h->path = nullstr; - } 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; - } - - sp = strrchr(h->host, '@'); - h->user = NULL; - if (sp != NULL) { - h->user = h->host; - *sp = '\0'; - h->host = sp + 1; - } - - sp = h->host; -} - - -static FILE *open_socket(len_and_sockaddr *lsa) -{ - FILE *fp; - - /* 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; -} - - -static char *gethdr(char *buf, size_t bufsiz, FILE *fp, int *istrunc) -{ - char *s, *hdrval; - int c; - - *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') - return NULL; - - /* convert the header name to lower case */ - for (s = buf; isalnum(*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); - - /* locate the start of the header value */ - for (*s++ = '\0'; *s == ' ' || *s == '\t'; ++s) - ; - hdrval = s; - - /* locate the end of header */ - while (*s != '\0' && *s != '\r' && *s != '\n') - ++s; - - /* end of header found */ - if (*s != '\0') { - *s = '\0'; - return hdrval; - } - - /* Rats! The buffer isn't big enough to hold the entire header value. */ - while (c = getc(fp), c != EOF && c != '\n') - ; - *istrunc = 1; - return hdrval; -} - -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); - } - - do { - char *buf_ptr; - - if (fgets(buf, 510, fp) == NULL) { - bb_perror_msg_and_die("error getting response"); - } - buf_ptr = strstr(buf, "\r\n"); - if (buf_ptr) { - *buf_ptr = '\0'; - } - } while (!isdigit(buf[0]) || buf[3] != ' '); - - buf[3] = '\0'; - result = xatoi_u(buf); - buf[3] = ' '; - return result; -} - -#if ENABLE_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. - */ -static int -getttywidth(void) -{ - int width; - get_terminal_width_height(0, &width, NULL); - return width; -} - -static void -updateprogressmeter(int ignore) -{ - int save_errno = errno; - - progressmeter(0); - errno = save_errno; -} - -static void alarmtimer(int iwait) -{ - struct itimerval itv; - - itv.it_value.tv_sec = iwait; - itv.it_value.tv_usec = 0; - itv.it_interval = itv.it_value; - setitimer(ITIMER_REAL, &itv, NULL); -} - - -static void -progressmeter(int flag) -{ - static struct timeval lastupdate; - static off_t lastsize, totalsize; - - struct timeval now, td, tvwait; - off_t abbrevsize; - int elapsed, ratio, barlength, i; - char buf[256]; - - if (flag == -1) { /* first call to progressmeter */ - gettimeofday(&start, (struct timezone *) 0); - lastupdate = start; - lastsize = 0; - totalsize = content_len + beg_range; /* as content_len changes.. */ - } - - gettimeofday(&now, (struct timezone *) 0); - ratio = 100; - if (totalsize != 0 && !chunked) { - /* long long helps to have working ETA even if !LFS */ - ratio = (int) (100 * (unsigned long long)(transferred+beg_range) / totalsize); - ratio = MIN(ratio, 100); - } - - fprintf(stderr, "\r%-20.20s%4d%% ", curfile, ratio); - - 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 + beg_range; - while (abbrevsize >= 100000) { - i++; - abbrevsize >>= 10; - } - /* 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; - } - timersub(&now, &start, &td); - elapsed = td.tv_sec; - - if (tvwait.tv_sec >= STALLTIME) { - fprintf(stderr, " - stalled -"); - } else { - off_t to_download = totalsize - beg_range; - if (transferred <= 0 || elapsed <= 0 || transferred > to_download || 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 == -1) { /* first call to progressmeter */ - 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) { /* last call to progressmeter */ - alarmtimer(0); - transferred = 0; - putc('\n', stderr); - } + return EXIT_SUCCESS; } -#endif - -/* 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. - * - */