diff options
Diffstat (limited to 'networking')
| -rw-r--r-- | networking/wget.c | 42 |
1 files changed, 32 insertions, 10 deletions
diff --git a/networking/wget.c b/networking/wget.c index 1991a1072..013b87801 100644 --- a/networking/wget.c +++ b/networking/wget.c @@ -13,8 +13,9 @@ //usage: IF_FEATURE_WGET_LONG_OPTIONS( //usage: "[-c|--continue] [-s|--spider] [-q|--quiet] [-O|--output-document FILE]\n" //usage: " [--header 'header: value'] [-Y|--proxy on/off] [-P DIR]\n" -//usage: " [--no-check-certificate] [-U|--user-agent AGENT]" -//usage: IF_FEATURE_WGET_TIMEOUT(" [-T SEC]") " URL..." +/* Since we ignore these opts, we don't show them in --help */ +/* //usage: " [--no-check-certificate] [--no-cache]" */ +//usage: " [-U|--user-agent AGENT]" IF_FEATURE_WGET_TIMEOUT(" [-T SEC]") " URL..." //usage: ) //usage: IF_NOT_FEATURE_WGET_LONG_OPTIONS( //usage: "[-csq] [-O FILE] [-Y on/off] [-P DIR] [-U AGENT]" @@ -35,8 +36,11 @@ #include "libbb.h" -//#define log_io(...) bb_error_msg(__VA_ARGS__) -#define log_io(...) ((void)0) +#if 0 +# define log_io(...) bb_error_msg(__VA_ARGS__) +#else +# define log_io(...) ((void)0) +#endif struct host_info { @@ -316,8 +320,6 @@ static char *gethdr(FILE *fp) char *s, *hdrval; int c; - /* *istrunc = 0; */ - /* retrieve header line */ c = fgets_and_trim(fp); @@ -348,6 +350,14 @@ static char *gethdr(FILE *fp) return hdrval; } +static void reset_beg_range_to_zero(void) +{ + //bb_error_msg("restart failed"); + G.beg_range = 0; + xlseek(G.output_fd, 0, SEEK_SET); + ftruncate(G.output_fd, 0); +} + static FILE* prepare_ftp_session(FILE **dfpp, struct host_info *target, len_and_sockaddr *lsa) { FILE *sfp; @@ -415,10 +425,12 @@ static FILE* prepare_ftp_session(FILE **dfpp, struct host_info *target, len_and_ *dfpp = open_socket(lsa); - if (G.beg_range) { + if (G.beg_range != 0) { sprintf(G.wget_buf, "REST %"OFF_FMT"u", G.beg_range); if (ftpcmd(G.wget_buf, NULL, sfp) == 350) G.content_len -= G.beg_range; + else + reset_beg_range_to_zero(); } if (ftpcmd("RETR ", target->path, sfp) > 150) @@ -675,7 +687,7 @@ static void download_one_url(const char *url) } #endif - if (G.beg_range) + if (G.beg_range != 0) fprintf(sfp, "Range: bytes=%"OFF_FMT"u-\r\n", G.beg_range); #if ENABLE_FEATURE_WGET_LONG_OPTIONS @@ -742,15 +754,23 @@ 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: + if (G.beg_range != 0) { + /* "Range:..." was not honored by the server. + * Restart download from the beginning. + */ + reset_beg_range_to_zero(); + } break; case 300: /* redirection */ case 301: case 302: case 303: break; - case 206: - if (G.beg_range) + case 206: /* Partial Content */ + if (G.beg_range != 0) + /* "Range:..." worked. Good. */ break; + /* Partial Content even though we did not ask for it??? */ /* fall through */ default: bb_error_msg_and_die("server returned error: %s", sanitize_string(G.wget_buf)); @@ -878,6 +898,8 @@ int wget_main(int argc UNUSED_PARAM, char **argv) "post-data\0" Required_argument "\xfd" /* Ignored (we don't do ssl) */ "no-check-certificate\0" No_argument "\xfc" + /* Ignored (we don't support caching) */ + "no-cache\0" No_argument "\xfb" ; #endif |