1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * wget - retrieve a file using HTTP or FTP
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4 | *
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5 | * Chip Rosenthal Covad Communications <chip@laserlink.net>
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6 | *
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7 | */
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8 |
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9 | /* We want libc to give us xxx64 functions also */
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10 | /* http://www.unix.org/version2/whatsnew/lfs20mar.html */
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11 | //#define _LARGEFILE64_SOURCE 1
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12 |
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13 | #include <getopt.h> /* for struct option */
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14 | #include "libbb.h"
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15 |
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16 | struct host_info {
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17 | // May be used if we ever will want to free() all xstrdup()s...
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18 | /* char *allocated; */
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19 | char *host;
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20 | int port;
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21 | char *path;
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22 | int is_ftp;
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23 | char *user;
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24 | };
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25 |
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26 | static void parse_url(char *url, struct host_info *h);
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27 | static FILE *open_socket(len_and_sockaddr *lsa);
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28 | static char *gethdr(char *buf, size_t bufsiz, FILE *fp, int *istrunc);
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29 | static int ftpcmd(const char *s1, const char *s2, FILE *fp, char *buf);
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30 |
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31 | /* Globals (can be accessed from signal handlers */
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32 | static off_t content_len; /* Content-length of the file */
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33 | static off_t beg_range; /* Range at which continue begins */
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34 | #if ENABLE_FEATURE_WGET_STATUSBAR
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35 | static off_t transferred; /* Number of bytes transferred so far */
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36 | #endif
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37 | static bool chunked; /* chunked transfer encoding */
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38 | #if ENABLE_FEATURE_WGET_STATUSBAR
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39 | static void progressmeter(int flag);
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40 | static const char *curfile; /* Name of current file being transferred */
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41 | enum {
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42 | STALLTIME = 5 /* Seconds when xfer considered "stalled" */
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43 | };
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44 | #else
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45 | static ALWAYS_INLINE void progressmeter(int flag) {}
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46 | #endif
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47 |
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48 | /* Read NMEMB bytes into PTR from STREAM. Returns the number of bytes read,
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49 | * and a short count if an eof or non-interrupt error is encountered. */
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50 | static size_t safe_fread(void *ptr, size_t nmemb, FILE *stream)
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51 | {
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52 | size_t ret;
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53 | char *p = (char*)ptr;
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54 |
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55 | do {
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56 | clearerr(stream);
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57 | ret = fread(p, 1, nmemb, stream);
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58 | p += ret;
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59 | nmemb -= ret;
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60 | } while (nmemb && ferror(stream) && errno == EINTR);
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61 |
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62 | return p - (char*)ptr;
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63 | }
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64 |
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65 | /* Read a line or SIZE-1 bytes into S, whichever is less, from STREAM.
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66 | * Returns S, or NULL if an eof or non-interrupt error is encountered. */
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67 | static char *safe_fgets(char *s, int size, FILE *stream)
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68 | {
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69 | char *ret;
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70 |
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71 | do {
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72 | clearerr(stream);
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73 | ret = fgets(s, size, stream);
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74 | } while (ret == NULL && ferror(stream) && errno == EINTR);
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75 |
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76 | return ret;
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77 | }
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78 |
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79 | #if ENABLE_FEATURE_WGET_AUTHENTICATION
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80 | /* Base64-encode character string. buf is assumed to be char buf[512]. */
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81 | static char *base64enc_512(char buf[512], const char *str)
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82 | {
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83 | unsigned len = strlen(str);
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84 | if (len > 512/4*3 - 10) /* paranoia */
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85 | len = 512/4*3 - 10;
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86 | bb_uuencode(buf, str, len, bb_uuenc_tbl_base64);
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87 | return buf;
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88 | }
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89 | #endif
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90 |
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91 | int wget_main(int argc, char **argv);
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92 | int wget_main(int argc, char **argv)
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93 | {
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94 | char buf[512];
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95 | struct host_info server, target;
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96 | len_and_sockaddr *lsa;
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97 | int n, status;
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98 | int port;
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99 | int try = 5;
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100 | unsigned opt;
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101 | char *str;
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102 | char *proxy = 0;
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103 | char *dir_prefix = NULL;
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104 | #if ENABLE_FEATURE_WGET_LONG_OPTIONS
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105 | char *extra_headers = NULL;
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106 | llist_t *headers_llist = NULL;
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107 | #endif
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108 |
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109 | FILE *sfp = NULL; /* socket to web/ftp server */
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110 | FILE *dfp = NULL; /* socket to ftp server (data) */
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111 | char *fname_out = NULL; /* where to direct output (-O) */
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112 | bool got_clen = 0; /* got content-length: from server */
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113 | int output_fd = -1;
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114 | bool use_proxy = 1; /* Use proxies if env vars are set */
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115 | const char *proxy_flag = "on"; /* Use proxies if env vars are set */
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116 | const char *user_agent = "Wget";/* "User-Agent" header field */
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117 | static const char keywords[] ALIGN1 =
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118 | "content-length\0""transfer-encoding\0""chunked\0""location\0";
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119 | enum {
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120 | KEY_content_length = 1, KEY_transfer_encoding, KEY_chunked, KEY_location
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121 | };
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122 | enum {
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123 | WGET_OPT_CONTINUE = 0x1,
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124 | WGET_OPT_SPIDER = 0x2,
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125 | WGET_OPT_QUIET = 0x4,
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126 | WGET_OPT_OUTNAME = 0x8,
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127 | WGET_OPT_PREFIX = 0x10,
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128 | WGET_OPT_PROXY = 0x20,
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129 | WGET_OPT_USER_AGENT = 0x40,
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130 | WGET_OPT_PASSIVE = 0x80,
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131 | WGET_OPT_HEADER = 0x100,
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132 | };
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133 | #if ENABLE_FEATURE_WGET_LONG_OPTIONS
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134 | static const char wget_longopts[] ALIGN1 =
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135 | /* name, has_arg, val */
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136 | "continue\0" No_argument "c"
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137 | "spider\0" No_argument "s"
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138 | "quiet\0" No_argument "q"
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139 | "output-document\0" Required_argument "O"
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140 | "directory-prefix\0" Required_argument "P"
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141 | "proxy\0" Required_argument "Y"
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142 | "user-agent\0" Required_argument "U"
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143 | "passive-ftp\0" No_argument "\xff"
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144 | "header\0" Required_argument "\xfe"
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145 | ;
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146 | applet_long_options = wget_longopts;
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147 | #endif
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148 | /* server.allocated = target.allocated = NULL; */
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149 | opt_complementary = "-1" USE_FEATURE_WGET_LONG_OPTIONS(":\xfe::");
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150 | opt = getopt32(argv, "csqO:P:Y:U:",
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151 | &fname_out, &dir_prefix,
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152 | &proxy_flag, &user_agent
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153 | USE_FEATURE_WGET_LONG_OPTIONS(, &headers_llist)
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154 | );
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155 | if (strcmp(proxy_flag, "off") == 0) {
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156 | /* Use the proxy if necessary */
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157 | use_proxy = 0;
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158 | }
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159 | #if ENABLE_FEATURE_WGET_LONG_OPTIONS
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160 | if (headers_llist) {
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161 | int size = 1;
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162 | char *cp;
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163 | llist_t *ll = headers_llist;
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164 | while (ll) {
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165 | size += strlen(ll->data) + 2;
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166 | ll = ll->link;
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167 | }
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168 | extra_headers = cp = xmalloc(size);
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169 | while (headers_llist) {
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170 | cp += sprintf(cp, "%s\r\n", headers_llist->data);
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171 | headers_llist = headers_llist->link;
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172 | }
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173 | }
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174 | #endif
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175 |
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176 | parse_url(argv[optind], &target);
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177 | server.host = target.host;
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178 | server.port = target.port;
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179 |
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180 | /* Use the proxy if necessary */
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181 | if (use_proxy) {
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182 | proxy = getenv(target.is_ftp ? "ftp_proxy" : "http_proxy");
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183 | if (proxy && *proxy) {
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184 | parse_url(proxy, &server);
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185 | } else {
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186 | use_proxy = 0;
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187 | }
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188 | }
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189 |
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190 | /* Guess an output filename */
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191 | if (!fname_out) {
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192 | // Dirty hack. Needed because bb_get_last_path_component
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193 | // will destroy trailing / by storing '\0' in last byte!
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194 | if (!last_char_is(target.path, '/')) {
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195 | fname_out = bb_get_last_path_component(target.path);
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196 | #if ENABLE_FEATURE_WGET_STATUSBAR
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197 | curfile = fname_out;
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198 | #endif
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199 | }
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200 | if (!fname_out || !fname_out[0]) {
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201 | /* bb_get_last_path_component writes
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202 | * to last '/' only. We don't have one here... */
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203 | fname_out = (char*)"index.html";
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204 | #if ENABLE_FEATURE_WGET_STATUSBAR
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205 | curfile = fname_out;
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206 | #endif
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207 | }
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208 | if (dir_prefix != NULL)
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209 | fname_out = concat_path_file(dir_prefix, fname_out);
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210 | #if ENABLE_FEATURE_WGET_STATUSBAR
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211 | } else {
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212 | curfile = bb_get_last_path_component(fname_out);
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213 | #endif
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214 | }
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215 | /* Impossible?
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216 | if ((opt & WGET_OPT_CONTINUE) && !fname_out)
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217 | bb_error_msg_and_die("cannot specify continue (-c) without a filename (-O)"); */
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218 |
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219 | /* Determine where to start transfer */
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220 | if (LONE_DASH(fname_out)) {
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221 | output_fd = 1;
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222 | opt &= ~WGET_OPT_CONTINUE;
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223 | }
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224 | if (opt & WGET_OPT_CONTINUE) {
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225 | output_fd = open(fname_out, O_WRONLY);
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226 | if (output_fd >= 0) {
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227 | beg_range = xlseek(output_fd, 0, SEEK_END);
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228 | }
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229 | /* File doesn't exist. We do not create file here yet.
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230 | We are not sure it exists on remove side */
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231 | }
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232 |
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233 | /* We want to do exactly _one_ DNS lookup, since some
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234 | * sites (i.e. ftp.us.debian.org) use round-robin DNS
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235 | * and we want to connect to only one IP... */
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236 | lsa = xhost2sockaddr(server.host, server.port);
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237 | if (!(opt & WGET_OPT_QUIET)) {
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238 | fprintf(stderr, "Connecting to %s (%s)\n", server.host,
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239 | xmalloc_sockaddr2dotted(&lsa->sa));
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240 | /* We leak result of xmalloc_sockaddr2dotted */
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241 | }
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242 |
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243 | if (use_proxy || !target.is_ftp) {
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244 | /*
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245 | * HTTP session
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246 | */
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247 | do {
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248 | got_clen = chunked = 0;
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249 |
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250 | if (!--try)
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251 | bb_error_msg_and_die("too many redirections");
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252 |
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253 | /* Open socket to http server */
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254 | if (sfp) fclose(sfp);
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255 | sfp = open_socket(lsa);
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256 |
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257 | /* Send HTTP request. */
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258 | if (use_proxy) {
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259 | fprintf(sfp, "GET %stp://%s/%s HTTP/1.1\r\n",
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260 | target.is_ftp ? "f" : "ht", target.host,
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261 | target.path);
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262 | } else {
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263 | fprintf(sfp, "GET /%s HTTP/1.1\r\n", target.path);
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264 | }
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265 |
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266 | fprintf(sfp, "Host: %s\r\nUser-Agent: %s\r\n",
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267 | target.host, user_agent);
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268 |
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269 | #if ENABLE_FEATURE_WGET_AUTHENTICATION
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270 | if (target.user) {
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271 | fprintf(sfp, "Proxy-Authorization: Basic %s\r\n"+6,
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272 | base64enc_512(buf, target.user));
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273 | }
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274 | if (use_proxy && server.user) {
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275 | fprintf(sfp, "Proxy-Authorization: Basic %s\r\n",
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276 | base64enc_512(buf, server.user));
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277 | }
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278 | #endif
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279 |
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280 | if (beg_range)
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281 | fprintf(sfp, "Range: bytes=%"OFF_FMT"d-\r\n", beg_range);
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282 | #if ENABLE_FEATURE_WGET_LONG_OPTIONS
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283 | if (extra_headers)
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284 | fputs(extra_headers, sfp);
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285 | #endif
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286 | fprintf(sfp, "Connection: close\r\n\r\n");
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287 |
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288 | /*
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289 | * Retrieve HTTP response line and check for "200" status code.
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290 | */
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291 | read_response:
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292 | if (fgets(buf, sizeof(buf), sfp) == NULL)
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293 | bb_error_msg_and_die("no response from server");
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294 |
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295 | str = buf;
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296 | str = skip_non_whitespace(str);
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297 | str = skip_whitespace(str);
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298 | // FIXME: no error check
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299 | // xatou wouldn't work: "200 OK"
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300 | status = atoi(str);
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301 | switch (status) {
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302 | case 0:
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303 | case 100:
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304 | while (gethdr(buf, sizeof(buf), sfp, &n) != NULL)
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305 | /* eat all remaining headers */;
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306 | goto read_response;
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307 | case 200:
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308 | break;
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309 | case 300: /* redirection */
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310 | case 301:
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311 | case 302:
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312 | case 303:
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313 | break;
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314 | case 206:
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315 | if (beg_range)
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316 | break;
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317 | /*FALLTHRU*/
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318 | default:
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319 | /* Show first line only and kill any ESC tricks */
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320 | buf[strcspn(buf, "\n\r\x1b")] = '\0';
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321 | bb_error_msg_and_die("server returned error: %s", buf);
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322 | }
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323 |
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324 | /*
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325 | * Retrieve HTTP headers.
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326 | */
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327 | while ((str = gethdr(buf, sizeof(buf), sfp, &n)) != NULL) {
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328 | /* gethdr did already convert the "FOO:" string to lowercase */
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329 | smalluint key = index_in_strings(keywords, *&buf) + 1;
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330 | if (key == KEY_content_length) {
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331 | content_len = BB_STRTOOFF(str, NULL, 10);
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332 | if (errno || content_len < 0) {
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333 | bb_error_msg_and_die("content-length %s is garbage", str);
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334 | }
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335 | got_clen = 1;
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336 | continue;
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337 | }
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338 | if (key == KEY_transfer_encoding) {
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339 | if (index_in_strings(keywords, str_tolower(str)) + 1 != KEY_chunked)
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340 | bb_error_msg_and_die("server wants to do %s transfer encoding", str);
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341 | chunked = got_clen = 1;
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342 | }
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343 | if (key == KEY_location) {
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344 | if (str[0] == '/')
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345 | /* free(target.allocated); */
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346 | target.path = /* target.allocated = */ xstrdup(str+1);
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347 | else {
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348 | parse_url(str, &target);
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349 | if (use_proxy == 0) {
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350 | server.host = target.host;
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351 | server.port = target.port;
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352 | }
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353 | free(lsa);
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354 | lsa = xhost2sockaddr(server.host, server.port);
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355 | break;
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356 | }
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357 | }
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358 | }
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359 | } while (status >= 300);
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360 |
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361 | dfp = sfp;
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362 |
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363 | } else {
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364 |
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365 | /*
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366 | * FTP session
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367 | */
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368 | if (!target.user)
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369 | target.user = xstrdup("anonymous:busybox@");
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370 |
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371 | sfp = open_socket(lsa);
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372 | if (ftpcmd(NULL, NULL, sfp, buf) != 220)
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373 | bb_error_msg_and_die("%s", buf+4);
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374 |
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375 | /*
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376 | * Splitting username:password pair,
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377 | * trying to log in
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378 | */
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379 | str = strchr(target.user, ':');
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380 | if (str)
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381 | *(str++) = '\0';
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382 | switch (ftpcmd("USER ", target.user, sfp, buf)) {
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383 | case 230:
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384 | break;
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385 | case 331:
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386 | if (ftpcmd("PASS ", str, sfp, buf) == 230)
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387 | break;
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388 | /* FALLTHRU (failed login) */
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389 | default:
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390 | bb_error_msg_and_die("ftp login: %s", buf+4);
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391 | }
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392 |
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393 | ftpcmd("TYPE I", NULL, sfp, buf);
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394 |
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395 | /*
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396 | * Querying file size
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397 | */
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398 | if (ftpcmd("SIZE ", target.path, sfp, buf) == 213) {
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399 | content_len = BB_STRTOOFF(buf+4, NULL, 10);
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400 | if (errno || content_len < 0) {
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401 | bb_error_msg_and_die("SIZE value is garbage");
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402 | }
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403 | got_clen = 1;
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404 | }
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405 |
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406 | /*
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407 | * Entering passive mode
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408 | */
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409 | if (ftpcmd("PASV", NULL, sfp, buf) != 227) {
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410 | pasv_error:
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411 | bb_error_msg_and_die("bad response to %s: %s", "PASV", buf);
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412 | }
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413 | // Response is "227 garbageN1,N2,N3,N4,P1,P2[)garbage]
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414 | // Server's IP is N1.N2.N3.N4 (we ignore it)
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415 | // Server's port for data connection is P1*256+P2
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416 | str = strrchr(buf, ')');
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417 | if (str) str[0] = '\0';
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418 | str = strrchr(buf, ',');
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419 | if (!str) goto pasv_error;
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420 | port = xatou_range(str+1, 0, 255);
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421 | *str = '\0';
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422 | str = strrchr(buf, ',');
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423 | if (!str) goto pasv_error;
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424 | port += xatou_range(str+1, 0, 255) * 256;
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425 | set_nport(lsa, htons(port));
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426 | dfp = open_socket(lsa);
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427 |
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428 | if (beg_range) {
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429 | sprintf(buf, "REST %"OFF_FMT"d", beg_range);
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430 | if (ftpcmd(buf, NULL, sfp, buf) == 350)
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431 | content_len -= beg_range;
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432 | }
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433 |
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434 | if (ftpcmd("RETR ", target.path, sfp, buf) > 150)
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435 | bb_error_msg_and_die("bad response to RETR: %s", buf);
|
---|
436 | }
|
---|
437 | if (opt & WGET_OPT_SPIDER) {
|
---|
438 | if (ENABLE_FEATURE_CLEAN_UP)
|
---|
439 | fclose(sfp);
|
---|
440 | goto done;
|
---|
441 | }
|
---|
442 |
|
---|
443 | /*
|
---|
444 | * Retrieve file
|
---|
445 | */
|
---|
446 | if (chunked) {
|
---|
447 | fgets(buf, sizeof(buf), dfp);
|
---|
448 | content_len = STRTOOFF(buf, NULL, 16);
|
---|
449 | /* FIXME: error check?? */
|
---|
450 | }
|
---|
451 |
|
---|
452 | /* Do it before progressmeter (want to have nice error message) */
|
---|
453 | if (output_fd < 0)
|
---|
454 | output_fd = xopen(fname_out,
|
---|
455 | O_WRONLY|O_CREAT|O_EXCL|O_TRUNC);
|
---|
456 |
|
---|
457 | if (!(opt & WGET_OPT_QUIET))
|
---|
458 | progressmeter(-1);
|
---|
459 |
|
---|
460 | do {
|
---|
461 | while (content_len > 0 || !got_clen) {
|
---|
462 | unsigned rdsz = sizeof(buf);
|
---|
463 | if (content_len < sizeof(buf) && (chunked || got_clen))
|
---|
464 | rdsz = (unsigned)content_len;
|
---|
465 | n = safe_fread(buf, rdsz, dfp);
|
---|
466 | if (n <= 0)
|
---|
467 | break;
|
---|
468 | if (full_write(output_fd, buf, n) != n) {
|
---|
469 | bb_perror_msg_and_die(bb_msg_write_error);
|
---|
470 | }
|
---|
471 | #if ENABLE_FEATURE_WGET_STATUSBAR
|
---|
472 | transferred += n;
|
---|
473 | #endif
|
---|
474 | if (got_clen) {
|
---|
475 | content_len -= n;
|
---|
476 | }
|
---|
477 | }
|
---|
478 |
|
---|
479 | if (chunked) {
|
---|
480 | safe_fgets(buf, sizeof(buf), dfp); /* This is a newline */
|
---|
481 | safe_fgets(buf, sizeof(buf), dfp);
|
---|
482 | content_len = STRTOOFF(buf, NULL, 16);
|
---|
483 | /* FIXME: error check? */
|
---|
484 | if (content_len == 0) {
|
---|
485 | chunked = 0; /* all done! */
|
---|
486 | }
|
---|
487 | }
|
---|
488 |
|
---|
489 | if (n == 0 && ferror(dfp)) {
|
---|
490 | bb_perror_msg_and_die(bb_msg_read_error);
|
---|
491 | }
|
---|
492 | } while (chunked);
|
---|
493 |
|
---|
494 | if (!(opt & WGET_OPT_QUIET))
|
---|
495 | progressmeter(1);
|
---|
496 |
|
---|
497 | if ((use_proxy == 0) && target.is_ftp) {
|
---|
498 | fclose(dfp);
|
---|
499 | if (ftpcmd(NULL, NULL, sfp, buf) != 226)
|
---|
500 | bb_error_msg_and_die("ftp error: %s", buf+4);
|
---|
501 | ftpcmd("QUIT", NULL, sfp, buf);
|
---|
502 | }
|
---|
503 | done:
|
---|
504 | exit(EXIT_SUCCESS);
|
---|
505 | }
|
---|
506 |
|
---|
507 |
|
---|
508 | static void parse_url(char *src_url, struct host_info *h)
|
---|
509 | {
|
---|
510 | char *url, *p, *sp;
|
---|
511 |
|
---|
512 | /* h->allocated = */ url = xstrdup(src_url);
|
---|
513 |
|
---|
514 | if (strncmp(url, "http://", 7) == 0) {
|
---|
515 | h->port = bb_lookup_port("http", "tcp", 80);
|
---|
516 | h->host = url + 7;
|
---|
517 | h->is_ftp = 0;
|
---|
518 | } else if (strncmp(url, "ftp://", 6) == 0) {
|
---|
519 | h->port = bb_lookup_port("ftp", "tcp", 21);
|
---|
520 | h->host = url + 6;
|
---|
521 | h->is_ftp = 1;
|
---|
522 | } else
|
---|
523 | bb_error_msg_and_die("not an http or ftp url: %s", url);
|
---|
524 |
|
---|
525 | // FYI:
|
---|
526 | // "Real" wget 'http://busybox.net?var=a/b' sends this request:
|
---|
527 | // 'GET /?var=a/b HTTP 1.0'
|
---|
528 | // and saves 'index.html?var=a%2Fb' (we save 'b')
|
---|
529 | // wget 'http://busybox.net?login=john@doe':
|
---|
530 | // request: 'GET /?login=john@doe HTTP/1.0'
|
---|
531 | // saves: 'index.html?login=john@doe' (we save '?login=john@doe')
|
---|
532 | // wget 'http://busybox.net#test/test':
|
---|
533 | // request: 'GET / HTTP/1.0'
|
---|
534 | // saves: 'index.html' (we save 'test')
|
---|
535 | //
|
---|
536 | // We also don't add unique .N suffix if file exists...
|
---|
537 | sp = strchr(h->host, '/');
|
---|
538 | p = strchr(h->host, '?'); if (!sp || (p && sp > p)) sp = p;
|
---|
539 | p = strchr(h->host, '#'); if (!sp || (p && sp > p)) sp = p;
|
---|
540 | if (!sp) {
|
---|
541 | /* must be writable because of bb_get_last_path_component() */
|
---|
542 | static char nullstr[] ALIGN1 = "";
|
---|
543 | h->path = nullstr;
|
---|
544 | } else if (*sp == '/') {
|
---|
545 | *sp = '\0';
|
---|
546 | h->path = sp + 1;
|
---|
547 | } else { // '#' or '?'
|
---|
548 | // http://busybox.net?login=john@doe is a valid URL
|
---|
549 | // memmove converts to:
|
---|
550 | // http:/busybox.nett?login=john@doe...
|
---|
551 | memmove(h->host-1, h->host, sp - h->host);
|
---|
552 | h->host--;
|
---|
553 | sp[-1] = '\0';
|
---|
554 | h->path = sp;
|
---|
555 | }
|
---|
556 |
|
---|
557 | sp = strrchr(h->host, '@');
|
---|
558 | h->user = NULL;
|
---|
559 | if (sp != NULL) {
|
---|
560 | h->user = h->host;
|
---|
561 | *sp = '\0';
|
---|
562 | h->host = sp + 1;
|
---|
563 | }
|
---|
564 |
|
---|
565 | sp = h->host;
|
---|
566 | }
|
---|
567 |
|
---|
568 |
|
---|
569 | static FILE *open_socket(len_and_sockaddr *lsa)
|
---|
570 | {
|
---|
571 | FILE *fp;
|
---|
572 |
|
---|
573 | /* glibc 2.4 seems to try seeking on it - ??! */
|
---|
574 | /* hopefully it understands what ESPIPE means... */
|
---|
575 | fp = fdopen(xconnect_stream(lsa), "r+");
|
---|
576 | if (fp == NULL)
|
---|
577 | bb_perror_msg_and_die("fdopen");
|
---|
578 |
|
---|
579 | return fp;
|
---|
580 | }
|
---|
581 |
|
---|
582 |
|
---|
583 | static char *gethdr(char *buf, size_t bufsiz, FILE *fp, int *istrunc)
|
---|
584 | {
|
---|
585 | char *s, *hdrval;
|
---|
586 | int c;
|
---|
587 |
|
---|
588 | *istrunc = 0;
|
---|
589 |
|
---|
590 | /* retrieve header line */
|
---|
591 | if (fgets(buf, bufsiz, fp) == NULL)
|
---|
592 | return NULL;
|
---|
593 |
|
---|
594 | /* see if we are at the end of the headers */
|
---|
595 | for (s = buf; *s == '\r'; ++s)
|
---|
596 | ;
|
---|
597 | if (s[0] == '\n')
|
---|
598 | return NULL;
|
---|
599 |
|
---|
600 | /* convert the header name to lower case */
|
---|
601 | for (s = buf; isalnum(*s) || *s == '-'; ++s)
|
---|
602 | *s = tolower(*s);
|
---|
603 |
|
---|
604 | /* verify we are at the end of the header name */
|
---|
605 | if (*s != ':')
|
---|
606 | bb_error_msg_and_die("bad header line: %s", buf);
|
---|
607 |
|
---|
608 | /* locate the start of the header value */
|
---|
609 | for (*s++ = '\0'; *s == ' ' || *s == '\t'; ++s)
|
---|
610 | ;
|
---|
611 | hdrval = s;
|
---|
612 |
|
---|
613 | /* locate the end of header */
|
---|
614 | while (*s != '\0' && *s != '\r' && *s != '\n')
|
---|
615 | ++s;
|
---|
616 |
|
---|
617 | /* end of header found */
|
---|
618 | if (*s != '\0') {
|
---|
619 | *s = '\0';
|
---|
620 | return hdrval;
|
---|
621 | }
|
---|
622 |
|
---|
623 | /* Rats! The buffer isn't big enough to hold the entire header value. */
|
---|
624 | while (c = getc(fp), c != EOF && c != '\n')
|
---|
625 | ;
|
---|
626 | *istrunc = 1;
|
---|
627 | return hdrval;
|
---|
628 | }
|
---|
629 |
|
---|
630 | static int ftpcmd(const char *s1, const char *s2, FILE *fp, char *buf)
|
---|
631 | {
|
---|
632 | int result;
|
---|
633 | if (s1) {
|
---|
634 | if (!s2) s2 = "";
|
---|
635 | fprintf(fp, "%s%s\r\n", s1, s2);
|
---|
636 | fflush(fp);
|
---|
637 | }
|
---|
638 |
|
---|
639 | do {
|
---|
640 | char *buf_ptr;
|
---|
641 |
|
---|
642 | if (fgets(buf, 510, fp) == NULL) {
|
---|
643 | bb_perror_msg_and_die("error getting response");
|
---|
644 | }
|
---|
645 | buf_ptr = strstr(buf, "\r\n");
|
---|
646 | if (buf_ptr) {
|
---|
647 | *buf_ptr = '\0';
|
---|
648 | }
|
---|
649 | } while (!isdigit(buf[0]) || buf[3] != ' ');
|
---|
650 |
|
---|
651 | buf[3] = '\0';
|
---|
652 | result = xatoi_u(buf);
|
---|
653 | buf[3] = ' ';
|
---|
654 | return result;
|
---|
655 | }
|
---|
656 |
|
---|
657 | #if ENABLE_FEATURE_WGET_STATUSBAR
|
---|
658 | /* Stuff below is from BSD rcp util.c, as added to openshh.
|
---|
659 | * Original copyright notice is retained at the end of this file.
|
---|
660 | */
|
---|
661 | static int
|
---|
662 | getttywidth(void)
|
---|
663 | {
|
---|
664 | int width;
|
---|
665 | get_terminal_width_height(0, &width, NULL);
|
---|
666 | return width;
|
---|
667 | }
|
---|
668 |
|
---|
669 | static void
|
---|
670 | updateprogressmeter(int ignore)
|
---|
671 | {
|
---|
672 | int save_errno = errno;
|
---|
673 |
|
---|
674 | progressmeter(0);
|
---|
675 | errno = save_errno;
|
---|
676 | }
|
---|
677 |
|
---|
678 | static void alarmtimer(int iwait)
|
---|
679 | {
|
---|
680 | struct itimerval itv;
|
---|
681 |
|
---|
682 | itv.it_value.tv_sec = iwait;
|
---|
683 | itv.it_value.tv_usec = 0;
|
---|
684 | itv.it_interval = itv.it_value;
|
---|
685 | setitimer(ITIMER_REAL, &itv, NULL);
|
---|
686 | }
|
---|
687 |
|
---|
688 | static void
|
---|
689 | progressmeter(int flag)
|
---|
690 | {
|
---|
691 | static unsigned lastupdate_sec;
|
---|
692 | static unsigned start_sec;
|
---|
693 | static off_t lastsize, totalsize;
|
---|
694 |
|
---|
695 | off_t abbrevsize;
|
---|
696 | unsigned since_last_update, elapsed;
|
---|
697 | unsigned ratio;
|
---|
698 | int barlength, i;
|
---|
699 |
|
---|
700 | if (flag == -1) { /* first call to progressmeter */
|
---|
701 | start_sec = monotonic_sec();
|
---|
702 | lastupdate_sec = start_sec;
|
---|
703 | lastsize = 0;
|
---|
704 | totalsize = content_len + beg_range; /* as content_len changes.. */
|
---|
705 | }
|
---|
706 |
|
---|
707 | ratio = 100;
|
---|
708 | if (totalsize != 0 && !chunked) {
|
---|
709 | /* long long helps to have it working even if !LFS */
|
---|
710 | ratio = (unsigned) (100ULL * (transferred+beg_range) / totalsize);
|
---|
711 | if (ratio > 100) ratio = 100;
|
---|
712 | }
|
---|
713 |
|
---|
714 | fprintf(stderr, "\r%-20.20s%4d%% ", curfile, ratio);
|
---|
715 |
|
---|
716 | barlength = getttywidth() - 49;
|
---|
717 | if (barlength > 0) {
|
---|
718 | /* god bless gcc for variable arrays :) */
|
---|
719 | i = barlength * ratio / 100;
|
---|
720 | {
|
---|
721 | char buf[i+1];
|
---|
722 | memset(buf, '*', i);
|
---|
723 | buf[i] = '\0';
|
---|
724 | fprintf(stderr, "|%s%*s|", buf, barlength - i, "");
|
---|
725 | }
|
---|
726 | }
|
---|
727 | i = 0;
|
---|
728 | abbrevsize = transferred + beg_range;
|
---|
729 | while (abbrevsize >= 100000) {
|
---|
730 | i++;
|
---|
731 | abbrevsize >>= 10;
|
---|
732 | }
|
---|
733 | /* see http://en.wikipedia.org/wiki/Tera */
|
---|
734 | fprintf(stderr, "%6d%c ", (int)abbrevsize, " kMGTPEZY"[i]);
|
---|
735 |
|
---|
736 | // Nuts! Ain't it easier to update progress meter ONLY when we transferred++?
|
---|
737 | // FIXME: get rid of alarmtimer + updateprogressmeter mess
|
---|
738 |
|
---|
739 | elapsed = monotonic_sec();
|
---|
740 | since_last_update = elapsed - lastupdate_sec;
|
---|
741 | if (transferred > lastsize) {
|
---|
742 | lastupdate_sec = elapsed;
|
---|
743 | lastsize = transferred;
|
---|
744 | if (since_last_update >= STALLTIME) {
|
---|
745 | /* We "cut off" these seconds from elapsed time
|
---|
746 | * by adjusting start time */
|
---|
747 | start_sec += since_last_update;
|
---|
748 | }
|
---|
749 | since_last_update = 0; /* we are un-stalled now */
|
---|
750 | }
|
---|
751 | elapsed -= start_sec; /* now it's "elapsed since start" */
|
---|
752 |
|
---|
753 | if (since_last_update >= STALLTIME) {
|
---|
754 | fprintf(stderr, " - stalled -");
|
---|
755 | } else {
|
---|
756 | off_t to_download = totalsize - beg_range;
|
---|
757 | if (transferred <= 0 || (int)elapsed <= 0 || transferred > to_download || chunked) {
|
---|
758 | fprintf(stderr, "--:--:-- ETA");
|
---|
759 | } else {
|
---|
760 | /* to_download / (transferred/elapsed) - elapsed: */
|
---|
761 | int eta = (int) ((unsigned long long)to_download*elapsed/transferred - elapsed);
|
---|
762 | /* (long long helps to have working ETA even if !LFS) */
|
---|
763 | i = eta % 3600;
|
---|
764 | fprintf(stderr, "%02d:%02d:%02d ETA", eta / 3600, i / 60, i % 60);
|
---|
765 | }
|
---|
766 | }
|
---|
767 |
|
---|
768 | if (flag == -1) { /* first call to progressmeter */
|
---|
769 | struct sigaction sa;
|
---|
770 | sa.sa_handler = updateprogressmeter;
|
---|
771 | sigemptyset(&sa.sa_mask);
|
---|
772 | sa.sa_flags = SA_RESTART;
|
---|
773 | sigaction(SIGALRM, &sa, NULL);
|
---|
774 | alarmtimer(1);
|
---|
775 | } else if (flag == 1) { /* last call to progressmeter */
|
---|
776 | alarmtimer(0);
|
---|
777 | transferred = 0;
|
---|
778 | putc('\n', stderr);
|
---|
779 | }
|
---|
780 | }
|
---|
781 | #endif /* FEATURE_WGET_STATUSBAR */
|
---|
782 |
|
---|
783 | /* Original copyright notice which applies to the CONFIG_FEATURE_WGET_STATUSBAR stuff,
|
---|
784 | * much of which was blatantly stolen from openssh. */
|
---|
785 |
|
---|
786 | /*-
|
---|
787 | * Copyright (c) 1992, 1993
|
---|
788 | * The Regents of the University of California. All rights reserved.
|
---|
789 | *
|
---|
790 | * Redistribution and use in source and binary forms, with or without
|
---|
791 | * modification, are permitted provided that the following conditions
|
---|
792 | * are met:
|
---|
793 | * 1. Redistributions of source code must retain the above copyright
|
---|
794 | * notice, this list of conditions and the following disclaimer.
|
---|
795 | * 2. Redistributions in binary form must reproduce the above copyright
|
---|
796 | * notice, this list of conditions and the following disclaimer in the
|
---|
797 | * documentation and/or other materials provided with the distribution.
|
---|
798 | *
|
---|
799 | * 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
|
---|
800 | * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
|
---|
801 | *
|
---|
802 | * 4. Neither the name of the University nor the names of its contributors
|
---|
803 | * may be used to endorse or promote products derived from this software
|
---|
804 | * without specific prior written permission.
|
---|
805 | *
|
---|
806 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
---|
807 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
---|
808 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
---|
809 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
---|
810 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
---|
811 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
---|
812 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
---|
813 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
---|
814 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
---|
815 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
---|
816 | * SUCH DAMAGE.
|
---|
817 | *
|
---|
818 | */
|
---|