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 | #include "busybox.h"
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10 | #include <errno.h>
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11 | #include <signal.h>
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12 | #include <sys/ioctl.h>
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13 | #include <getopt.h>
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14 |
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15 |
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16 | struct host_info {
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17 | char *host;
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18 | int port;
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19 | char *path;
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20 | int is_ftp;
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21 | char *user;
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22 | };
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23 |
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24 | static void parse_url(char *url, struct host_info *h);
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25 | static FILE *open_socket(struct sockaddr_in *s_in);
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26 | static char *gethdr(char *buf, size_t bufsiz, FILE *fp, int *istrunc);
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27 | static int ftpcmd(char *s1, char *s2, FILE *fp, char *buf);
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28 |
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29 | /* Globals (can be accessed from signal handlers */
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30 | static off_t filesize; /* content-length of the file */
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31 | static int chunked; /* chunked transfer encoding */
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32 | #ifdef CONFIG_FEATURE_WGET_STATUSBAR
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33 | static void progressmeter(int flag);
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34 | static char *curfile; /* Name of current file being transferred. */
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35 | static struct timeval start; /* Time a transfer started. */
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36 | static off_t transferred; /* Number of bytes transferred so far. */
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37 | /* For progressmeter() -- number of seconds before xfer considered "stalled" */
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38 | enum {
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39 | STALLTIME = 5
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40 | };
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41 | #else
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42 | static inline void progressmeter(int flag) {}
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43 | #endif
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44 |
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45 | static void close_and_delete_outfile(FILE* output, char *fname_out, int do_continue)
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46 | {
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47 | if (output != stdout && do_continue==0) {
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48 | fclose(output);
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49 | unlink(fname_out);
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50 | }
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51 | }
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52 |
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53 | /* Read NMEMB elements of SIZE bytes into PTR from STREAM. Returns the
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54 | * number of elements read, and a short count if an eof or non-interrupt
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55 | * error is encountered. */
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56 | static size_t safe_fread(void *ptr, size_t size, size_t nmemb, FILE *stream)
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57 | {
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58 | size_t ret = 0;
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59 |
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60 | do {
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61 | clearerr(stream);
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62 | ret += fread((char *)ptr + (ret * size), size, nmemb - ret, stream);
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63 | } while (ret < nmemb && ferror(stream) && errno == EINTR);
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64 |
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65 | return ret;
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66 | }
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67 |
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68 | /* Write NMEMB elements of SIZE bytes from PTR to STREAM. Returns the
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69 | * number of elements written, and a short count if an eof or non-interrupt
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70 | * error is encountered. */
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71 | static size_t safe_fwrite(void *ptr, size_t size, size_t nmemb, FILE *stream)
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72 | {
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73 | size_t ret = 0;
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74 |
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75 | do {
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76 | clearerr(stream);
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77 | ret += fwrite((char *)ptr + (ret * size), size, nmemb - ret, stream);
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78 | } while (ret < nmemb && ferror(stream) && errno == EINTR);
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79 |
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80 | return ret;
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81 | }
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82 |
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83 | /* Read a line or SIZE - 1 bytes into S, whichever is less, from STREAM.
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84 | * Returns S, or NULL if an eof or non-interrupt error is encountered. */
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85 | static char *safe_fgets(char *s, int size, FILE *stream)
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86 | {
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87 | char *ret;
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88 |
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89 | do {
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90 | clearerr(stream);
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91 | ret = fgets(s, size, stream);
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92 | } while (ret == NULL && ferror(stream) && errno == EINTR);
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93 |
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94 | return ret;
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95 | }
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96 |
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97 | #define close_delete_and_die(s...) { \
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98 | close_and_delete_outfile(output, fname_out, do_continue); \
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99 | bb_error_msg_and_die(s); }
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100 |
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101 |
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102 | #ifdef CONFIG_FEATURE_WGET_AUTHENTICATION
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103 | /*
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104 | * Base64-encode character string
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105 | * oops... isn't something similar in uuencode.c?
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106 | * XXX: It would be better to use already existing code
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107 | */
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108 | static char *base64enc(unsigned char *p, char *buf, int len) {
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109 |
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110 | char al[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
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111 | "0123456789+/";
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112 | char *s = buf;
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113 |
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114 | while(*p) {
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115 | if (s >= buf+len-4)
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116 | bb_error_msg_and_die("buffer overflow");
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117 | *(s++) = al[(*p >> 2) & 0x3F];
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118 | *(s++) = al[((*p << 4) & 0x30) | ((*(p+1) >> 4) & 0x0F)];
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119 | *s = *(s+1) = '=';
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120 | *(s+2) = 0;
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121 | if (! *(++p)) break;
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122 | *(s++) = al[((*p << 2) & 0x3C) | ((*(p+1) >> 6) & 0x03)];
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123 | if (! *(++p)) break;
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124 | *(s++) = al[*(p++) & 0x3F];
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125 | }
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126 |
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127 | return buf;
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128 | }
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129 | #endif
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130 |
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131 | #define WGET_OPT_CONTINUE 1
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132 | #define WGET_OPT_QUIET 2
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133 | #define WGET_OPT_PASSIVE 4
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134 | #define WGET_OPT_OUTNAME 8
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135 | #define WGET_OPT_HEADER 16
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136 | #define WGET_OPT_PREFIX 32
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137 | #define WGET_OPT_PROXY 64
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138 |
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139 | #if ENABLE_WGET_LONG_OPTIONS
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140 | static const struct option wget_long_options[] = {
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141 | { "continue", 0, NULL, 'c' },
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142 | { "quiet", 0, NULL, 'q' },
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143 | { "passive-ftp", 0, NULL, 139 },
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144 | { "output-document", 1, NULL, 'O' },
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145 | { "header", 1, NULL, 131 },
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146 | { "directory-prefix",1, NULL, 'P' },
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147 | { "proxy", 1, NULL, 'Y' },
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148 | { 0, 0, 0, 0 }
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149 | };
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150 | #endif
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151 |
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152 | int wget_main(int argc, char **argv)
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153 | {
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154 | int n, try=5, status;
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155 | unsigned long opt;
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156 | int port;
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157 | char *proxy = 0;
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158 | char *dir_prefix=NULL;
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159 | char *s, buf[512];
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160 | struct stat sbuf;
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161 | char extra_headers[1024];
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162 | char *extra_headers_ptr = extra_headers;
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163 | int extra_headers_left = sizeof(extra_headers);
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164 | struct host_info server, target;
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165 | struct sockaddr_in s_in;
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166 | llist_t *headers_llist = NULL;
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167 |
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168 | FILE *sfp = NULL; /* socket to web/ftp server */
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169 | FILE *dfp = NULL; /* socket to ftp server (data) */
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170 | char *fname_out = NULL; /* where to direct output (-O) */
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171 | int do_continue = 0; /* continue a prev transfer (-c) */
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172 | long beg_range = 0L; /* range at which continue begins */
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173 | int got_clen = 0; /* got content-length: from server */
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174 | FILE *output; /* socket to web server */
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175 | int quiet_flag = FALSE; /* Be verry, verry quiet... */
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176 | int use_proxy = 1; /* Use proxies if env vars are set */
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177 | char *proxy_flag = "on"; /* Use proxies if env vars are set */
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178 |
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179 | /*
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180 | * Crack command line.
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181 | */
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182 | bb_opt_complementally = "-1:\203::";
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183 | #if ENABLE_WGET_LONG_OPTIONS
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184 | bb_applet_long_options = wget_long_options;
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185 | #endif
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186 | opt = bb_getopt_ulflags(argc, argv, "cq\213O:\203:P:Y:",
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187 | &fname_out, &headers_llist,
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188 | &dir_prefix, &proxy_flag);
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189 | if (opt & WGET_OPT_CONTINUE) {
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190 | ++do_continue;
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191 | }
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192 | if (opt & WGET_OPT_QUIET) {
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193 | quiet_flag = TRUE;
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194 | }
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195 | if (strcmp(proxy_flag, "off") == 0) {
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196 | /* Use the proxy if necessary. */
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197 | use_proxy = 0;
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198 | }
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199 | if (opt & WGET_OPT_HEADER) {
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200 | while (headers_llist) {
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201 | int arglen = strlen(headers_llist->data);
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202 | if (extra_headers_left - arglen - 2 <= 0)
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203 | bb_error_msg_and_die("extra_headers buffer too small(need %i)", extra_headers_left - arglen);
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204 | strcpy(extra_headers_ptr, headers_llist->data);
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205 | extra_headers_ptr += arglen;
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206 | extra_headers_left -= ( arglen + 2 );
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207 | *extra_headers_ptr++ = '\r';
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208 | *extra_headers_ptr++ = '\n';
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209 | *(extra_headers_ptr + 1) = 0;
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210 | headers_llist = headers_llist->link;
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211 | }
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212 | }
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213 |
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214 | parse_url(argv[optind], &target);
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215 | server.host = target.host;
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216 | server.port = target.port;
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217 |
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218 | /*
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219 | * Use the proxy if necessary.
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220 | */
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221 | if (use_proxy) {
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222 | proxy = getenv(target.is_ftp ? "ftp_proxy" : "http_proxy");
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223 | if (proxy && *proxy) {
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224 | parse_url(bb_xstrdup(proxy), &server);
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225 | } else {
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226 | use_proxy = 0;
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227 | }
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228 | }
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229 |
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230 | /* Guess an output filename */
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231 | if (!fname_out) {
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232 | // Dirty hack. Needed because bb_get_last_path_component
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233 | // will destroy trailing / by storing '\0' in last byte!
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234 | if(*target.path && target.path[strlen(target.path)-1]!='/') {
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235 | fname_out =
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236 | #ifdef CONFIG_FEATURE_WGET_STATUSBAR
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237 | curfile =
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238 | #endif
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239 | bb_get_last_path_component(target.path);
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240 | }
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241 | if (fname_out==NULL || strlen(fname_out)<1) {
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242 | fname_out =
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243 | #ifdef CONFIG_FEATURE_WGET_STATUSBAR
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244 | curfile =
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245 | #endif
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246 | "index.html";
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247 | }
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248 | if (dir_prefix != NULL)
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249 | fname_out = concat_path_file(dir_prefix, fname_out);
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250 | #ifdef CONFIG_FEATURE_WGET_STATUSBAR
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251 | } else {
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252 | curfile = bb_get_last_path_component(fname_out);
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253 | #endif
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254 | }
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255 | if (do_continue && !fname_out)
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256 | bb_error_msg_and_die("cannot specify continue (-c) without a filename (-O)");
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257 |
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258 |
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259 | /*
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260 | * Open the output file stream.
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261 | */
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262 | if (strcmp(fname_out, "-") == 0) {
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263 | output = stdout;
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264 | quiet_flag = TRUE;
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265 | } else {
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266 | output = bb_xfopen(fname_out, (do_continue ? "a" : "w"));
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267 | }
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268 |
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269 | /*
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270 | * Determine where to start transfer.
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271 | */
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272 | if (do_continue) {
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273 | if (fstat(fileno(output), &sbuf) < 0)
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274 | bb_perror_msg_and_die("fstat()");
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275 | if (sbuf.st_size > 0)
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276 | beg_range = sbuf.st_size;
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277 | else
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278 | do_continue = 0;
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279 | }
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280 |
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281 | /* We want to do exactly _one_ DNS lookup, since some
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282 | * sites (i.e. ftp.us.debian.org) use round-robin DNS
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283 | * and we want to connect to only one IP... */
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284 | bb_lookup_host(&s_in, server.host);
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285 | s_in.sin_port = server.port;
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286 | if (quiet_flag==FALSE) {
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287 | fprintf(stdout, "Connecting to %s[%s]:%d\n",
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288 | server.host, inet_ntoa(s_in.sin_addr), ntohs(server.port));
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289 | }
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290 |
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291 | if (use_proxy || !target.is_ftp) {
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292 | /*
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293 | * HTTP session
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294 | */
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295 | do {
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296 | got_clen = chunked = 0;
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297 |
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298 | if (! --try)
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299 | close_delete_and_die("too many redirections");
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300 |
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301 | /*
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302 | * Open socket to http server
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303 | */
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304 | if (sfp) fclose(sfp);
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305 | sfp = open_socket(&s_in);
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306 |
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307 | /*
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308 | * Send HTTP request.
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309 | */
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310 | if (use_proxy) {
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311 | const char *format = "GET %stp://%s:%d/%s HTTP/1.1\r\n";
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312 | #ifdef CONFIG_FEATURE_WGET_IP6_LITERAL
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313 | if (strchr(target.host, ':'))
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314 | format = "GET %stp://[%s]:%d/%s HTTP/1.1\r\n";
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315 | #endif
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316 | fprintf(sfp, format,
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317 | target.is_ftp ? "f" : "ht", target.host,
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318 | ntohs(target.port), target.path);
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319 | } else {
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320 | fprintf(sfp, "GET /%s HTTP/1.1\r\n", target.path);
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321 | }
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322 |
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323 | fprintf(sfp, "Host: %s\r\nUser-Agent: Wget\r\n", target.host);
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324 |
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325 | #ifdef CONFIG_FEATURE_WGET_AUTHENTICATION
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326 | if (target.user) {
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327 | fprintf(sfp, "Authorization: Basic %s\r\n",
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328 | base64enc((unsigned char*)target.user, buf, sizeof(buf)));
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329 | }
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330 | if (use_proxy && server.user) {
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331 | fprintf(sfp, "Proxy-Authorization: Basic %s\r\n",
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332 | base64enc((unsigned char*)server.user, buf, sizeof(buf)));
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333 | }
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334 | #endif
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335 |
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336 | if (do_continue)
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337 | fprintf(sfp, "Range: bytes=%ld-\r\n", beg_range);
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338 | if(extra_headers_left < sizeof(extra_headers))
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339 | fputs(extra_headers,sfp);
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340 | fprintf(sfp,"Connection: close\r\n\r\n");
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341 |
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342 | /*
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343 | * Retrieve HTTP response line and check for "200" status code.
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344 | */
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345 | read_response:
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346 | if (fgets(buf, sizeof(buf), sfp) == NULL)
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347 | close_delete_and_die("no response from server");
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348 |
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349 | for (s = buf ; *s != '\0' && !isspace(*s) ; ++s)
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350 | ;
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351 | for ( ; isspace(*s) ; ++s)
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352 | ;
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353 | switch (status = atoi(s)) {
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354 | case 0:
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355 | case 100:
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356 | while (gethdr(buf, sizeof(buf), sfp, &n) != NULL);
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357 | goto read_response;
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358 | case 200:
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359 | if (do_continue && output != stdout)
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360 | output = freopen(fname_out, "w", output);
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361 | do_continue = 0;
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362 | break;
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363 | case 300: /* redirection */
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364 | case 301:
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365 | case 302:
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366 | case 303:
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367 | break;
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368 | case 206:
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369 | if (do_continue)
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370 | break;
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371 | /*FALLTHRU*/
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372 | default:
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373 | chomp(buf);
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374 | close_delete_and_die("server returned error %d: %s", atoi(s), buf);
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375 | }
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376 |
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377 | /*
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378 | * Retrieve HTTP headers.
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379 | */
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380 | while ((s = gethdr(buf, sizeof(buf), sfp, &n)) != NULL) {
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381 | if (strcasecmp(buf, "content-length") == 0) {
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382 | unsigned long value;
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383 | if (safe_strtoul(s, &value)) {
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384 | close_delete_and_die("content-length %s is garbage", s);
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385 | }
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386 | filesize = value;
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387 | got_clen = 1;
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388 | continue;
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389 | }
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390 | if (strcasecmp(buf, "transfer-encoding") == 0) {
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391 | if (strcasecmp(s, "chunked") == 0) {
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392 | chunked = got_clen = 1;
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393 | } else {
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394 | close_delete_and_die("server wants to do %s transfer encoding", s);
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395 | }
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396 | }
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397 | if (strcasecmp(buf, "location") == 0) {
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398 | if (s[0] == '/')
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399 | target.path = bb_xstrdup(s+1);
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400 | else {
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401 | parse_url(bb_xstrdup(s), &target);
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402 | if (use_proxy == 0) {
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403 | server.host = target.host;
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404 | server.port = target.port;
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405 | }
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406 | bb_lookup_host(&s_in, server.host);
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407 | s_in.sin_port = server.port;
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408 | break;
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409 | }
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410 | }
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411 | }
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412 | } while(status >= 300);
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413 |
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414 | dfp = sfp;
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415 | }
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416 | else
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417 | {
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418 | /*
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419 | * FTP session
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420 | */
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421 | if (! target.user)
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422 | target.user = bb_xstrdup("anonymous:busybox@");
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423 |
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424 | sfp = open_socket(&s_in);
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425 | if (ftpcmd(NULL, NULL, sfp, buf) != 220)
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426 | close_delete_and_die("%s", buf+4);
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427 |
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428 | /*
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429 | * Splitting username:password pair,
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430 | * trying to log in
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431 | */
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432 | s = strchr(target.user, ':');
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433 | if (s)
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434 | *(s++) = '\0';
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435 | switch(ftpcmd("USER ", target.user, sfp, buf)) {
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436 | case 230:
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437 | break;
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438 | case 331:
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439 | if (ftpcmd("PASS ", s, sfp, buf) == 230)
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440 | break;
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441 | /* FALLTHRU (failed login) */
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442 | default:
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443 | close_delete_and_die("ftp login: %s", buf+4);
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444 | }
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445 |
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446 | ftpcmd("TYPE I", NULL, sfp, buf);
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447 |
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448 | /*
|
---|
449 | * Querying file size
|
---|
450 | */
|
---|
451 | if (ftpcmd("SIZE ", target.path, sfp, buf) == 213) {
|
---|
452 | unsigned long value;
|
---|
453 | if (safe_strtoul(buf+4, &value)) {
|
---|
454 | close_delete_and_die("SIZE value is garbage");
|
---|
455 | }
|
---|
456 | filesize = value;
|
---|
457 | got_clen = 1;
|
---|
458 | }
|
---|
459 |
|
---|
460 | /*
|
---|
461 | * Entering passive mode
|
---|
462 | */
|
---|
463 | if (ftpcmd("PASV", NULL, sfp, buf) != 227)
|
---|
464 | close_delete_and_die("PASV: %s", buf+4);
|
---|
465 | s = strrchr(buf, ',');
|
---|
466 | *s = 0;
|
---|
467 | port = atoi(s+1);
|
---|
468 | s = strrchr(buf, ',');
|
---|
469 | port += atoi(s+1) * 256;
|
---|
470 | s_in.sin_port = htons(port);
|
---|
471 | dfp = open_socket(&s_in);
|
---|
472 |
|
---|
473 | if (do_continue) {
|
---|
474 | sprintf(buf, "REST %ld", beg_range);
|
---|
475 | if (ftpcmd(buf, NULL, sfp, buf) != 350) {
|
---|
476 | if (output != stdout)
|
---|
477 | output = freopen(fname_out, "w", output);
|
---|
478 | do_continue = 0;
|
---|
479 | } else
|
---|
480 | filesize -= beg_range;
|
---|
481 | }
|
---|
482 |
|
---|
483 | if (ftpcmd("RETR ", target.path, sfp, buf) > 150)
|
---|
484 | close_delete_and_die("RETR: %s", buf+4);
|
---|
485 | }
|
---|
486 |
|
---|
487 |
|
---|
488 | /*
|
---|
489 | * Retrieve file
|
---|
490 | */
|
---|
491 | if (chunked) {
|
---|
492 | fgets(buf, sizeof(buf), dfp);
|
---|
493 | filesize = strtol(buf, (char **) NULL, 16);
|
---|
494 | }
|
---|
495 |
|
---|
496 | if (quiet_flag==FALSE)
|
---|
497 | progressmeter(-1);
|
---|
498 |
|
---|
499 | do {
|
---|
500 | while ((filesize > 0 || !got_clen) && (n = safe_fread(buf, 1, ((chunked || got_clen) && (filesize < sizeof(buf)) ? filesize : sizeof(buf)), dfp)) > 0) {
|
---|
501 | if (safe_fwrite(buf, 1, n, output) != n) {
|
---|
502 | bb_perror_msg_and_die(bb_msg_write_error);
|
---|
503 | }
|
---|
504 | #ifdef CONFIG_FEATURE_WGET_STATUSBAR
|
---|
505 | transferred += n;
|
---|
506 | #endif
|
---|
507 | if (got_clen) {
|
---|
508 | filesize -= n;
|
---|
509 | }
|
---|
510 | }
|
---|
511 |
|
---|
512 | if (chunked) {
|
---|
513 | safe_fgets(buf, sizeof(buf), dfp); /* This is a newline */
|
---|
514 | safe_fgets(buf, sizeof(buf), dfp);
|
---|
515 | filesize = strtol(buf, (char **) NULL, 16);
|
---|
516 | if (filesize==0) {
|
---|
517 | chunked = 0; /* all done! */
|
---|
518 | }
|
---|
519 | }
|
---|
520 |
|
---|
521 | if (n == 0 && ferror(dfp)) {
|
---|
522 | bb_perror_msg_and_die(bb_msg_read_error);
|
---|
523 | }
|
---|
524 | } while (chunked);
|
---|
525 |
|
---|
526 | if (quiet_flag==FALSE)
|
---|
527 | progressmeter(1);
|
---|
528 |
|
---|
529 | if ((use_proxy == 0) && target.is_ftp) {
|
---|
530 | fclose(dfp);
|
---|
531 | if (ftpcmd(NULL, NULL, sfp, buf) != 226)
|
---|
532 | bb_error_msg_and_die("ftp error: %s", buf+4);
|
---|
533 | ftpcmd("QUIT", NULL, sfp, buf);
|
---|
534 | }
|
---|
535 | exit(EXIT_SUCCESS);
|
---|
536 | }
|
---|
537 |
|
---|
538 |
|
---|
539 | void parse_url(char *url, struct host_info *h)
|
---|
540 | {
|
---|
541 | char *cp, *sp, *up, *pp;
|
---|
542 |
|
---|
543 | if (strncmp(url, "http://", 7) == 0) {
|
---|
544 | h->port = bb_lookup_port("http", "tcp", 80);
|
---|
545 | h->host = url + 7;
|
---|
546 | h->is_ftp = 0;
|
---|
547 | } else if (strncmp(url, "ftp://", 6) == 0) {
|
---|
548 | h->port = bb_lookup_port("ftp", "tfp", 21);
|
---|
549 | h->host = url + 6;
|
---|
550 | h->is_ftp = 1;
|
---|
551 | } else
|
---|
552 | bb_error_msg_and_die("not an http or ftp url: %s", url);
|
---|
553 |
|
---|
554 | sp = strchr(h->host, '/');
|
---|
555 | if (sp) {
|
---|
556 | *sp++ = '\0';
|
---|
557 | h->path = sp;
|
---|
558 | } else
|
---|
559 | h->path = bb_xstrdup("");
|
---|
560 |
|
---|
561 | up = strrchr(h->host, '@');
|
---|
562 | if (up != NULL) {
|
---|
563 | h->user = h->host;
|
---|
564 | *up++ = '\0';
|
---|
565 | h->host = up;
|
---|
566 | } else
|
---|
567 | h->user = NULL;
|
---|
568 |
|
---|
569 | pp = h->host;
|
---|
570 |
|
---|
571 | #ifdef CONFIG_FEATURE_WGET_IP6_LITERAL
|
---|
572 | if (h->host[0] == '[') {
|
---|
573 | char *ep;
|
---|
574 |
|
---|
575 | ep = h->host + 1;
|
---|
576 | while (*ep == ':' || isxdigit (*ep))
|
---|
577 | ep++;
|
---|
578 | if (*ep == ']') {
|
---|
579 | h->host++;
|
---|
580 | *ep = '\0';
|
---|
581 | pp = ep + 1;
|
---|
582 | }
|
---|
583 | }
|
---|
584 | #endif
|
---|
585 |
|
---|
586 | cp = strchr(pp, ':');
|
---|
587 | if (cp != NULL) {
|
---|
588 | *cp++ = '\0';
|
---|
589 | h->port = htons(atoi(cp));
|
---|
590 | }
|
---|
591 | }
|
---|
592 |
|
---|
593 |
|
---|
594 | FILE *open_socket(struct sockaddr_in *s_in)
|
---|
595 | {
|
---|
596 | FILE *fp;
|
---|
597 |
|
---|
598 | fp = fdopen(xconnect(s_in), "r+");
|
---|
599 | if (fp == NULL)
|
---|
600 | bb_perror_msg_and_die("fdopen()");
|
---|
601 |
|
---|
602 | return fp;
|
---|
603 | }
|
---|
604 |
|
---|
605 |
|
---|
606 | char *gethdr(char *buf, size_t bufsiz, FILE *fp, int *istrunc)
|
---|
607 | {
|
---|
608 | char *s, *hdrval;
|
---|
609 | int c;
|
---|
610 |
|
---|
611 | *istrunc = 0;
|
---|
612 |
|
---|
613 | /* retrieve header line */
|
---|
614 | if (fgets(buf, bufsiz, fp) == NULL)
|
---|
615 | return NULL;
|
---|
616 |
|
---|
617 | /* see if we are at the end of the headers */
|
---|
618 | for (s = buf ; *s == '\r' ; ++s)
|
---|
619 | ;
|
---|
620 | if (s[0] == '\n')
|
---|
621 | return NULL;
|
---|
622 |
|
---|
623 | /* convert the header name to lower case */
|
---|
624 | for (s = buf ; isalnum(*s) || *s == '-' ; ++s)
|
---|
625 | *s = tolower(*s);
|
---|
626 |
|
---|
627 | /* verify we are at the end of the header name */
|
---|
628 | if (*s != ':')
|
---|
629 | bb_error_msg_and_die("bad header line: %s", buf);
|
---|
630 |
|
---|
631 | /* locate the start of the header value */
|
---|
632 | for (*s++ = '\0' ; *s == ' ' || *s == '\t' ; ++s)
|
---|
633 | ;
|
---|
634 | hdrval = s;
|
---|
635 |
|
---|
636 | /* locate the end of header */
|
---|
637 | while (*s != '\0' && *s != '\r' && *s != '\n')
|
---|
638 | ++s;
|
---|
639 |
|
---|
640 | /* end of header found */
|
---|
641 | if (*s != '\0') {
|
---|
642 | *s = '\0';
|
---|
643 | return hdrval;
|
---|
644 | }
|
---|
645 |
|
---|
646 | /* Rats! The buffer isn't big enough to hold the entire header value. */
|
---|
647 | while (c = getc(fp), c != EOF && c != '\n')
|
---|
648 | ;
|
---|
649 | *istrunc = 1;
|
---|
650 | return hdrval;
|
---|
651 | }
|
---|
652 |
|
---|
653 | static int ftpcmd(char *s1, char *s2, FILE *fp, char *buf)
|
---|
654 | {
|
---|
655 | if (s1) {
|
---|
656 | if (!s2) s2="";
|
---|
657 | fprintf(fp, "%s%s\r\n", s1, s2);
|
---|
658 | fflush(fp);
|
---|
659 | }
|
---|
660 |
|
---|
661 | do {
|
---|
662 | char *buf_ptr;
|
---|
663 |
|
---|
664 | if (fgets(buf, 510, fp) == NULL) {
|
---|
665 | bb_perror_msg_and_die("fgets()");
|
---|
666 | }
|
---|
667 | buf_ptr = strstr(buf, "\r\n");
|
---|
668 | if (buf_ptr) {
|
---|
669 | *buf_ptr = '\0';
|
---|
670 | }
|
---|
671 | } while (! isdigit(buf[0]) || buf[3] != ' ');
|
---|
672 |
|
---|
673 | return atoi(buf);
|
---|
674 | }
|
---|
675 |
|
---|
676 | #ifdef CONFIG_FEATURE_WGET_STATUSBAR
|
---|
677 | /* Stuff below is from BSD rcp util.c, as added to openshh.
|
---|
678 | * Original copyright notice is retained at the end of this file.
|
---|
679 | *
|
---|
680 | */
|
---|
681 |
|
---|
682 |
|
---|
683 | static int
|
---|
684 | getttywidth(void)
|
---|
685 | {
|
---|
686 | int width=0;
|
---|
687 | get_terminal_width_height(0, &width, NULL);
|
---|
688 | return (width);
|
---|
689 | }
|
---|
690 |
|
---|
691 | static void
|
---|
692 | updateprogressmeter(int ignore)
|
---|
693 | {
|
---|
694 | int save_errno = errno;
|
---|
695 |
|
---|
696 | progressmeter(0);
|
---|
697 | errno = save_errno;
|
---|
698 | }
|
---|
699 |
|
---|
700 | static void
|
---|
701 | alarmtimer(int wait)
|
---|
702 | {
|
---|
703 | struct itimerval itv;
|
---|
704 |
|
---|
705 | itv.it_value.tv_sec = wait;
|
---|
706 | itv.it_value.tv_usec = 0;
|
---|
707 | itv.it_interval = itv.it_value;
|
---|
708 | setitimer(ITIMER_REAL, &itv, NULL);
|
---|
709 | }
|
---|
710 |
|
---|
711 |
|
---|
712 | static void
|
---|
713 | progressmeter(int flag)
|
---|
714 | {
|
---|
715 | static struct timeval lastupdate;
|
---|
716 | static off_t lastsize, totalsize;
|
---|
717 |
|
---|
718 | struct timeval now, td, wait;
|
---|
719 | off_t abbrevsize;
|
---|
720 | int elapsed, ratio, barlength, i;
|
---|
721 | char buf[256];
|
---|
722 |
|
---|
723 | if (flag == -1) {
|
---|
724 | (void) gettimeofday(&start, (struct timezone *) 0);
|
---|
725 | lastupdate = start;
|
---|
726 | lastsize = 0;
|
---|
727 | totalsize = filesize; /* as filesize changes.. */
|
---|
728 | }
|
---|
729 |
|
---|
730 | (void) gettimeofday(&now, (struct timezone *) 0);
|
---|
731 | ratio = 100;
|
---|
732 | if (totalsize != 0 && !chunked) {
|
---|
733 | ratio = (int) (100 * transferred / totalsize);
|
---|
734 | ratio = MIN(ratio, 100);
|
---|
735 | }
|
---|
736 |
|
---|
737 | fprintf(stderr, "\r%-20.20s%4d%% ", curfile, ratio);
|
---|
738 |
|
---|
739 | barlength = getttywidth() - 51;
|
---|
740 | if (barlength > 0 && barlength < sizeof(buf)) {
|
---|
741 | i = barlength * ratio / 100;
|
---|
742 | memset(buf, '*', i);
|
---|
743 | memset(buf + i, ' ', barlength - i);
|
---|
744 | buf[barlength] = '\0';
|
---|
745 | fprintf(stderr, "|%s|", buf);
|
---|
746 | }
|
---|
747 | i = 0;
|
---|
748 | abbrevsize = transferred;
|
---|
749 | while (abbrevsize >= 100000) {
|
---|
750 | i++;
|
---|
751 | abbrevsize >>= 10;
|
---|
752 | }
|
---|
753 | /* See http://en.wikipedia.org/wiki/Tera */
|
---|
754 | fprintf(stderr, "%6d %c%c ", (int)abbrevsize, " KMGTPEZY"[i], i?'B':' ');
|
---|
755 |
|
---|
756 | timersub(&now, &lastupdate, &wait);
|
---|
757 | if (transferred > lastsize) {
|
---|
758 | lastupdate = now;
|
---|
759 | lastsize = transferred;
|
---|
760 | if (wait.tv_sec >= STALLTIME)
|
---|
761 | timeradd(&start, &wait, &start);
|
---|
762 | wait.tv_sec = 0;
|
---|
763 | }
|
---|
764 | timersub(&now, &start, &td);
|
---|
765 | elapsed = td.tv_sec;
|
---|
766 |
|
---|
767 | if (wait.tv_sec >= STALLTIME) {
|
---|
768 | fprintf(stderr, " - stalled -");
|
---|
769 | } else if (transferred <= 0 || elapsed <= 0 || transferred > totalsize || chunked) {
|
---|
770 | fprintf(stderr, "--:--:-- ETA");
|
---|
771 | } else {
|
---|
772 | /* totalsize / (transferred/elapsed) - elapsed: */
|
---|
773 | int eta = (int) (totalsize*elapsed/transferred - elapsed);
|
---|
774 | i = eta % 3600;
|
---|
775 | fprintf(stderr, "%02d:%02d:%02d ETA", eta / 3600, i / 60, i % 60);
|
---|
776 | }
|
---|
777 |
|
---|
778 | if (flag == -1) {
|
---|
779 | struct sigaction sa;
|
---|
780 | sa.sa_handler = updateprogressmeter;
|
---|
781 | sigemptyset(&sa.sa_mask);
|
---|
782 | sa.sa_flags = SA_RESTART;
|
---|
783 | sigaction(SIGALRM, &sa, NULL);
|
---|
784 | alarmtimer(1);
|
---|
785 | } else if (flag == 1) {
|
---|
786 | alarmtimer(0);
|
---|
787 | transferred = 0;
|
---|
788 | putc('\n', stderr);
|
---|
789 | }
|
---|
790 | }
|
---|
791 | #endif
|
---|
792 |
|
---|
793 | /* Original copyright notice which applies to the CONFIG_FEATURE_WGET_STATUSBAR stuff,
|
---|
794 | * much of which was blatantly stolen from openssh. */
|
---|
795 |
|
---|
796 | /*-
|
---|
797 | * Copyright (c) 1992, 1993
|
---|
798 | * The Regents of the University of California. All rights reserved.
|
---|
799 | *
|
---|
800 | * Redistribution and use in source and binary forms, with or without
|
---|
801 | * modification, are permitted provided that the following conditions
|
---|
802 | * are met:
|
---|
803 | * 1. Redistributions of source code must retain the above copyright
|
---|
804 | * notice, this list of conditions and the following disclaimer.
|
---|
805 | * 2. Redistributions in binary form must reproduce the above copyright
|
---|
806 | * notice, this list of conditions and the following disclaimer in the
|
---|
807 | * documentation and/or other materials provided with the distribution.
|
---|
808 | *
|
---|
809 | * 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
|
---|
810 | * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
|
---|
811 | *
|
---|
812 | * 4. Neither the name of the University nor the names of its contributors
|
---|
813 | * may be used to endorse or promote products derived from this software
|
---|
814 | * without specific prior written permission.
|
---|
815 | *
|
---|
816 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
---|
817 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
---|
818 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
---|
819 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
---|
820 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
---|
821 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
---|
822 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
---|
823 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
---|
824 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
---|
825 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
---|
826 | * SUCH DAMAGE.
|
---|
827 | *
|
---|
828 | * $Id: wget.c,v 1.75 2004/10/08 08:27:40 andersen Exp $
|
---|
829 | */
|
---|