1 /* Reading/parsing the initialization file.
2 Copyright (C) 2005 Free Software Foundation, Inc.
4 This file is part of GNU Wget.
6 GNU Wget is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 GNU Wget is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with Wget; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 In addition, as a special exception, the Free Software Foundation
21 gives permission to link the code of its release of Wget with the
22 OpenSSL project's "OpenSSL" library (or with modified versions of it
23 that use the same license as the "OpenSSL" library), and distribute
24 the linked executables. You must obey the GNU General Public License
25 in all respects for all of the code used other than "OpenSSL". If you
26 modify this file, you may extend this exception to your version of the
27 file, but you are not obligated to do so. If you do not wish to do
28 so, delete this exception statement from your version. */
33 #include <sys/types.h>
56 #include "recur.h" /* for INFINITE_RECURSION */
57 #include "convert.h" /* for convert_cleanup */
58 #include "res.h" /* for res_cleanup */
64 /* We want tilde expansion enabled only when reading `.wgetrc' lines;
65 otherwise, it will be performed by the shell. This variable will
66 be set by the wgetrc-reading function. */
68 static int enable_tilde_expansion;
71 #define CMD_DECLARE(func) static int func \
72 PARAMS ((const char *, const char *, void *))
74 CMD_DECLARE (cmd_boolean);
75 CMD_DECLARE (cmd_bytes);
76 CMD_DECLARE (cmd_bytes_large);
78 CMD_DECLARE (cmd_cert_type);
80 CMD_DECLARE (cmd_directory_vector);
81 CMD_DECLARE (cmd_lockable_boolean);
82 CMD_DECLARE (cmd_number);
83 CMD_DECLARE (cmd_number_inf);
84 CMD_DECLARE (cmd_string);
85 CMD_DECLARE (cmd_file);
86 CMD_DECLARE (cmd_directory);
87 CMD_DECLARE (cmd_time);
88 CMD_DECLARE (cmd_vector);
90 CMD_DECLARE (cmd_spec_dirstruct);
91 CMD_DECLARE (cmd_spec_header);
92 CMD_DECLARE (cmd_spec_htmlify);
93 CMD_DECLARE (cmd_spec_mirror);
94 CMD_DECLARE (cmd_spec_prefer_family);
95 CMD_DECLARE (cmd_spec_progress);
96 CMD_DECLARE (cmd_spec_recursive);
97 CMD_DECLARE (cmd_spec_restrict_file_names);
99 CMD_DECLARE (cmd_spec_secure_protocol);
101 CMD_DECLARE (cmd_spec_timeout);
102 CMD_DECLARE (cmd_spec_useragent);
104 /* List of recognized commands, each consisting of name, place and
105 function. When adding a new command, simply add it to the list,
106 but be sure to keep the list sorted alphabetically, as
107 command_by_name depends on it. Also, be sure to add any entries
108 that allocate memory (e.g. cmd_string and cmd_vector) to the
109 cleanup() function below. */
114 int (*action) PARAMS ((const char *, const char *, void *));
116 { "accept", &opt.accepts, cmd_vector },
117 { "addhostdir", &opt.add_hostdir, cmd_boolean },
118 { "alwaysrest", &opt.always_rest, cmd_boolean }, /* deprecated */
119 { "background", &opt.background, cmd_boolean },
120 { "backupconverted", &opt.backup_converted, cmd_boolean },
121 { "backups", &opt.backups, cmd_number },
122 { "base", &opt.base_href, cmd_string },
123 { "bindaddress", &opt.bind_address, cmd_string },
125 { "cacertificate", &opt.ca_cert, cmd_file },
127 { "cache", &opt.allow_cache, cmd_boolean },
129 { "cadirectory", &opt.ca_directory, cmd_directory },
130 { "certificate", &opt.cert_file, cmd_file },
131 { "certificatetype", &opt.cert_type, cmd_cert_type },
132 { "checkcertificate", &opt.check_cert, cmd_boolean },
134 { "connecttimeout", &opt.connect_timeout, cmd_time },
135 { "continue", &opt.always_rest, cmd_boolean },
136 { "convertlinks", &opt.convert_links, cmd_boolean },
137 { "cookies", &opt.cookies, cmd_boolean },
138 { "cutdirs", &opt.cut_dirs, cmd_number },
140 { "debug", &opt.debug, cmd_boolean },
142 { "deleteafter", &opt.delete_after, cmd_boolean },
143 { "dirprefix", &opt.dir_prefix, cmd_directory },
144 { "dirstruct", NULL, cmd_spec_dirstruct },
145 { "dnscache", &opt.dns_cache, cmd_boolean },
146 { "dnstimeout", &opt.dns_timeout, cmd_time },
147 { "domains", &opt.domains, cmd_vector },
148 { "dotbytes", &opt.dot_bytes, cmd_bytes },
149 { "dotsinline", &opt.dots_in_line, cmd_number },
150 { "dotspacing", &opt.dot_spacing, cmd_number },
151 { "dotstyle", &opt.dot_style, cmd_string },
153 { "egdfile", &opt.egd_file, cmd_file },
155 { "excludedirectories", &opt.excludes, cmd_directory_vector },
156 { "excludedomains", &opt.exclude_domains, cmd_vector },
157 { "followftp", &opt.follow_ftp, cmd_boolean },
158 { "followtags", &opt.follow_tags, cmd_vector },
159 { "forcehtml", &opt.force_html, cmd_boolean },
160 { "ftppasswd", &opt.ftp_passwd, cmd_string }, /* deprecated */
161 { "ftppassword", &opt.ftp_passwd, cmd_string },
162 { "ftpproxy", &opt.ftp_proxy, cmd_string },
163 { "ftpuser", &opt.ftp_user, cmd_string },
164 { "glob", &opt.ftp_glob, cmd_boolean },
165 { "header", NULL, cmd_spec_header },
166 { "htmlextension", &opt.html_extension, cmd_boolean },
167 { "htmlify", NULL, cmd_spec_htmlify },
168 { "httpkeepalive", &opt.http_keep_alive, cmd_boolean },
169 { "httppasswd", &opt.http_passwd, cmd_string }, /* deprecated */
170 { "httppassword", &opt.http_passwd, cmd_string },
171 { "httpproxy", &opt.http_proxy, cmd_string },
172 { "httpsproxy", &opt.https_proxy, cmd_string },
173 { "httpuser", &opt.http_user, cmd_string },
174 { "ignorelength", &opt.ignore_length, cmd_boolean },
175 { "ignoretags", &opt.ignore_tags, cmd_vector },
176 { "includedirectories", &opt.includes, cmd_directory_vector },
178 { "inet4only", &opt.ipv4_only, cmd_boolean },
179 { "inet6only", &opt.ipv6_only, cmd_boolean },
181 { "input", &opt.input_filename, cmd_file },
182 { "keepsessioncookies", &opt.keep_session_cookies, cmd_boolean },
183 { "killlonger", &opt.kill_longer, cmd_boolean },
184 { "limitrate", &opt.limit_rate, cmd_bytes },
185 { "loadcookies", &opt.cookies_input, cmd_file },
186 { "logfile", &opt.lfilename, cmd_file },
187 { "login", &opt.ftp_user, cmd_string },/* deprecated*/
188 { "mirror", NULL, cmd_spec_mirror },
189 { "netrc", &opt.netrc, cmd_boolean },
190 { "noclobber", &opt.noclobber, cmd_boolean },
191 { "noparent", &opt.no_parent, cmd_boolean },
192 { "noproxy", &opt.no_proxy, cmd_vector },
193 { "numtries", &opt.ntry, cmd_number_inf },/* deprecated*/
194 { "outputdocument", &opt.output_document, cmd_file },
195 { "pagerequisites", &opt.page_requisites, cmd_boolean },
196 { "passiveftp", &opt.ftp_pasv, cmd_lockable_boolean },
197 { "passwd", &opt.ftp_passwd, cmd_string },/* deprecated*/
198 { "password", &opt.passwd, cmd_string },
199 { "postdata", &opt.post_data, cmd_string },
200 { "postfile", &opt.post_file_name, cmd_file },
201 { "preferfamily", NULL, cmd_spec_prefer_family },
202 { "preservepermissions", &opt.preserve_perm, cmd_boolean },
204 { "privatekey", &opt.private_key, cmd_file },
205 { "privatekeytype", &opt.private_key_type, cmd_cert_type },
207 { "progress", &opt.progress_type, cmd_spec_progress },
208 { "protocoldirectories", &opt.protocol_directories, cmd_boolean },
209 { "proxypasswd", &opt.proxy_passwd, cmd_string }, /* deprecated */
210 { "proxypassword", &opt.proxy_passwd, cmd_string },
211 { "proxyuser", &opt.proxy_user, cmd_string },
212 { "quiet", &opt.quiet, cmd_boolean },
213 { "quota", &opt.quota, cmd_bytes_large },
215 { "randomfile", &opt.random_file, cmd_file },
217 { "randomwait", &opt.random_wait, cmd_boolean },
218 { "readtimeout", &opt.read_timeout, cmd_time },
219 { "reclevel", &opt.reclevel, cmd_number_inf },
220 { "recursive", NULL, cmd_spec_recursive },
221 { "referer", &opt.referer, cmd_string },
222 { "reject", &opt.rejects, cmd_vector },
223 { "relativeonly", &opt.relative_only, cmd_boolean },
224 { "removelisting", &opt.remove_listing, cmd_boolean },
225 { "restrictfilenames", NULL, cmd_spec_restrict_file_names },
226 { "retrsymlinks", &opt.retr_symlinks, cmd_boolean },
227 { "retryconnrefused", &opt.retry_connrefused, cmd_boolean },
228 { "robots", &opt.use_robots, cmd_boolean },
229 { "savecookies", &opt.cookies_output, cmd_file },
230 { "saveheaders", &opt.save_headers, cmd_boolean },
232 { "secureprotocol", &opt.secure_protocol, cmd_spec_secure_protocol },
234 { "serverresponse", &opt.server_response, cmd_boolean },
235 { "spanhosts", &opt.spanhost, cmd_boolean },
236 { "spider", &opt.spider, cmd_boolean },
237 { "strictcomments", &opt.strict_comments, cmd_boolean },
238 { "timeout", NULL, cmd_spec_timeout },
239 { "timestamping", &opt.timestamping, cmd_boolean },
240 { "tries", &opt.ntry, cmd_number_inf },
241 { "useproxy", &opt.use_proxy, cmd_boolean },
242 { "user", &opt.user, cmd_string },
243 { "useragent", NULL, cmd_spec_useragent },
244 { "verbose", &opt.verbose, cmd_boolean },
245 { "wait", &opt.wait, cmd_time },
246 { "waitretry", &opt.waitretry, cmd_time }
249 /* Look up CMDNAME in the commands[] and return its position in the
250 array. If CMDNAME is not found, return -1. */
253 command_by_name (const char *cmdname)
255 /* Use binary search for speed. Wget has ~100 commands, which
256 guarantees a worst case performance of 7 string comparisons. */
257 int lo = 0, hi = countof (commands) - 1;
261 int mid = (lo + hi) >> 1;
262 int cmp = strcasecmp (cmdname, commands[mid].name);
273 /* Reset the variables to default values. */
279 /* Most of the default values are 0. Just reset everything, and
280 fill in the non-zero values. Note that initializing pointers to
281 NULL this way is technically illegal, but porting Wget to a
282 machine where NULL is not all-zero bit pattern will be the least
283 of the implementors' worries. */
294 opt.http_keep_alive = 1;
296 tmp = getenv ("no_proxy");
298 opt.no_proxy = sepstring (tmp);
301 opt.read_timeout = 900;
304 opt.remove_listing = 1;
306 opt.dot_bytes = 1024;
307 opt.dot_spacing = 10;
308 opt.dots_in_line = 50;
317 /* The default for file name restriction defaults to the OS type. */
318 #if !defined(WINDOWS) && !defined(__CYGWIN__)
319 opt.restrict_files_os = restrict_unix;
321 opt.restrict_files_os = restrict_windows;
323 opt.restrict_files_ctrl = 1;
326 /* Return the user's home directory (strdup-ed), or NULL if none is
331 char *home = getenv ("HOME");
336 /* If HOME is not defined, try getting it from the password
338 struct passwd *pwd = getpwuid (getuid ());
339 if (!pwd || !pwd->pw_dir)
343 /* Under Windows, if $HOME isn't defined, use the directory where
344 `wget.exe' resides. */
349 return home ? xstrdup (home) : NULL;
352 /* Return the path to the user's .wgetrc. This is either the value of
353 `WGETRC' environment variable, or `$HOME/.wgetrc'.
355 If the `WGETRC' variable exists but the file does not exist, the
356 function will exit(). */
358 wgetrc_file_name (void)
363 /* Try the environment. */
364 env = getenv ("WGETRC");
367 if (!file_exists_p (env))
369 fprintf (stderr, _("%s: WGETRC points to %s, which doesn't exist.\n"),
373 return xstrdup (env);
376 /* If that failed, try $HOME/.wgetrc. */
379 file = aprintf ("%s/.wgetrc", home);
383 /* Under Windows, if we still haven't found .wgetrc, look for the file
384 `wget.ini' in the directory where `wget.exe' resides; we do this for
385 backward compatibility with previous versions of Wget.
386 SYSTEM_WGETRC should not be defined under WINDOWS. */
387 if (!file || !file_exists_p (file))
393 file = aprintf ("%s/wget.ini", home);
399 if (!file_exists_p (file))
407 /* Return values of parse_line. */
415 static enum parse_line parse_line PARAMS ((const char *, char **,
417 static int setval_internal PARAMS ((int, const char *, const char *));
419 /* Initialize variables from a wgetrc file. Returns zero (failure) if
420 there were errors in the file. */
423 run_wgetrc (const char *file)
430 fp = fopen (file, "rb");
433 fprintf (stderr, _("%s: Cannot read %s (%s).\n"), exec_name,
434 file, strerror (errno));
435 return 1; /* not a fatal error */
437 enable_tilde_expansion = 1;
439 while ((line = read_whole_line (fp)) != NULL)
441 char *com = NULL, *val = NULL;
444 /* Parse the line. */
445 switch (parse_line (line, &com, &val, &comind))
448 /* If everything is OK, set the value. */
449 if (!setval_internal (comind, com, val))
451 fprintf (stderr, _("%s: Error in %s at line %d.\n"),
452 exec_name, file, ln);
456 case line_syntax_error:
457 fprintf (stderr, _("%s: Syntax error in %s at line %d.\n"),
458 exec_name, file, ln);
461 case line_unknown_command:
462 fprintf (stderr, _("%s: Unknown command `%s' in %s at line %d.\n"),
463 exec_name, com, file, ln);
476 enable_tilde_expansion = 0;
482 /* Initialize the defaults and run the system wgetrc and user's own
490 /* Load the hard-coded defaults. */
493 /* If SYSTEM_WGETRC is defined, use it. */
495 if (file_exists_p (SYSTEM_WGETRC))
496 ok &= run_wgetrc (SYSTEM_WGETRC);
498 /* Override it with your own, if one exists. */
499 file = wgetrc_file_name ();
502 /* #### We should canonicalize `file' and SYSTEM_WGETRC with
503 something like realpath() before comparing them with `strcmp' */
505 if (!strcmp (file, SYSTEM_WGETRC))
507 fprintf (stderr, _("\
508 %s: Warning: Both system and user wgetrc point to `%s'.\n"),
513 ok &= run_wgetrc (file);
515 /* If there were errors processing either `.wgetrc', abort. */
523 /* Remove dashes and underscores from S, modifying S in the
529 char *t = s; /* t - tortoise */
530 char *h = s; /* h - hare */
532 if (*h == '_' || *h == '-')
539 /* Parse the line pointed by line, with the syntax:
540 <sp>* command <sp>* = <sp>* value <sp>*
541 Uses malloc to allocate space for command and value.
542 If the line is invalid, data is freed and 0 is returned.
544 Returns one of line_ok, line_empty, line_syntax_error, or
545 line_unknown_command.
547 In case of line_ok, *COM and *VAL point to freshly allocated
548 strings, and *COMIND points to com's index. In case of error or
549 empty line, their values are unmodified. */
551 static enum parse_line
552 parse_line (const char *line, char **com, char **val, int *comind)
555 const char *end = line + strlen (line);
556 const char *cmdstart, *cmdend;
557 const char *valstart, *valend;
562 /* Skip leading and trailing whitespace. */
563 while (*line && ISSPACE (*line))
565 while (end > line && ISSPACE (end[-1]))
568 /* Skip empty lines and comments. */
569 if (!*line || *line == '#')
575 while (p < end && (ISALPHA (*p) || *p == '_' || *p == '-'))
579 /* Skip '=', as well as any space before or after it. */
580 while (p < end && ISSPACE (*p))
582 if (p == end || *p != '=')
583 return line_syntax_error;
585 while (p < end && ISSPACE (*p))
591 /* The syntax is valid (even though the command might not be). Fill
592 in the command name and value. */
593 *com = strdupdelim (cmdstart, cmdend);
594 *val = strdupdelim (valstart, valend);
596 /* The line now known to be syntactically correct. Check whether
597 the command is valid. */
598 BOUNDED_TO_ALLOCA (cmdstart, cmdend, cmdcopy);
600 ind = command_by_name (cmdcopy);
602 return line_unknown_command;
604 /* Report success to the caller. */
609 /* Run commands[comind].action. */
612 setval_internal (int comind, const char *com, const char *val)
614 assert (0 <= comind && comind < countof (commands));
615 DEBUGP (("Setting %s (%s) to %s\n", com, commands[comind].name, val));
616 return ((*commands[comind].action) (com, val, commands[comind].place));
619 /* Run command COM with value VAL. If running the command produces an
620 error, report the error and exit.
622 This is intended to be called from main() to modify Wget's behavior
623 through command-line switches. Since COM is hard-coded in main(),
624 it is not canonicalized, and this aborts when COM is not found.
626 If COMIND's are exported to init.h, this function will be changed
627 to accept COMIND directly. */
630 setoptval (const char *com, const char *val, const char *optname)
632 /* Prepend "--" to OPTNAME. */
633 char *dd_optname = (char *) alloca (2 + strlen (optname) + 1);
636 strcpy (dd_optname + 2, optname);
638 assert (val != NULL);
639 if (!setval_internal (command_by_name (com), dd_optname, val))
643 /* Parse OPT into command and value and run it. For example,
644 run_command("foo=bar") is equivalent to setoptval("foo", "bar").
645 This is used by the `--execute' flag in main.c. */
648 run_command (const char *opt)
652 switch (parse_line (opt, &com, &val, &comind))
655 if (!setval_internal (comind, com, val))
661 fprintf (stderr, _("%s: Invalid --execute command `%s'\n"),
667 /* Generic helper functions, for use with `commands'. */
669 /* Forward declarations: */
674 static int decode_string PARAMS ((const char *, const struct decode_item *,
676 static int simple_atoi PARAMS ((const char *, const char *, int *));
677 static int simple_atof PARAMS ((const char *, const char *, double *));
679 #define CMP1(p, c0) (TOLOWER((p)[0]) == (c0) && (p)[1] == '\0')
681 #define CMP2(p, c0, c1) (TOLOWER((p)[0]) == (c0) \
682 && TOLOWER((p)[1]) == (c1) \
685 #define CMP3(p, c0, c1, c2) (TOLOWER((p)[0]) == (c0) \
686 && TOLOWER((p)[1]) == (c1) \
687 && TOLOWER((p)[2]) == (c2) \
691 /* Store the boolean value from VAL to PLACE. COM is ignored,
692 except for error messages. */
694 cmd_boolean (const char *com, const char *val, void *place)
698 if (CMP2 (val, 'o', 'n') || CMP3 (val, 'y', 'e', 's') || CMP1 (val, '1'))
699 /* "on", "yes" and "1" mean true. */
701 else if (CMP3 (val, 'o', 'f', 'f') || CMP2 (val, 'n', 'o') || CMP1 (val, '0'))
702 /* "off", "no" and "0" mean false. */
707 _("%s: %s: Invalid boolean `%s', use `on' or `off'.\n"),
708 exec_name, com, val);
712 *(int *)place = bool_value;
716 /* Store the lockable_boolean {2, 1, 0, -1} value from VAL to PLACE.
717 COM is ignored, except for error messages. Values 2 and -1
718 indicate that once defined, the value may not be changed by
719 successive wgetrc files or command-line arguments.
721 Values: 2 - Enable a particular option for good ("always")
722 1 - Enable an option ("on")
723 0 - Disable an option ("off")
724 -1 - Disable an option for good ("never") */
726 cmd_lockable_boolean (const char *com, const char *val, void *place)
728 int lockable_boolean_value;
730 int oldval = *(int *)place;
733 * If a config file said "always" or "never", don't allow command line
734 * arguments to override the config file.
736 if (oldval == -1 || oldval == 2)
739 if (0 == strcasecmp (val, "always") || CMP1 (val, '2'))
740 lockable_boolean_value = 2;
741 else if (CMP2 (val, 'o', 'n') || CMP3 (val, 'y', 'e', 's') || CMP1 (val, '1'))
742 lockable_boolean_value = 1;
743 else if (CMP3 (val, 'o', 'f', 'f') || CMP2 (val, 'n', 'o') || CMP1 (val, '0'))
744 lockable_boolean_value = 0;
745 else if (0 == strcasecmp (val, "never") || CMP2 (val, '-', '1'))
746 lockable_boolean_value = -1;
750 _("%s: %s: Invalid boolean `%s', use always, on, off, or never.\n"),
751 exec_name, com, val);
755 *(int *)place = lockable_boolean_value;
759 /* Set the non-negative integer value from VAL to PLACE. With
760 incorrect specification, the number remains unchanged. */
762 cmd_number (const char *com, const char *val, void *place)
764 if (!simple_atoi (val, val + strlen (val), place)
765 || *(int *) place < 0)
767 fprintf (stderr, _("%s: %s: Invalid number `%s'.\n"),
768 exec_name, com, val);
774 /* Similar to cmd_number(), only accepts `inf' as a synonym for 0. */
776 cmd_number_inf (const char *com, const char *val, void *place)
778 if (!strcasecmp (val, "inf"))
783 return cmd_number (com, val, place);
786 /* Copy (strdup) the string at COM to a new location and place a
787 pointer to *PLACE. */
789 cmd_string (const char *com, const char *val, void *place)
791 char **pstring = (char **)place;
793 xfree_null (*pstring);
794 *pstring = xstrdup (val);
799 # define ISSEP(c) ((c) == '/')
801 # define ISSEP(c) ((c) == '/' || (c) == '\\')
804 /* Like the above, but handles tilde-expansion when reading a user's
805 `.wgetrc'. In that case, and if VAL begins with `~', the tilde
806 gets expanded to the user's home directory. */
808 cmd_file (const char *com, const char *val, void *place)
810 char **pstring = (char **)place;
812 xfree_null (*pstring);
814 /* #### If VAL is empty, perhaps should set *PLACE to NULL. */
816 if (!enable_tilde_expansion || !(*val == '~' && ISSEP (val[1])))
819 *pstring = xstrdup (val);
824 char *home = home_dir ();
828 homelen = strlen (home);
829 while (homelen && ISSEP (home[homelen - 1]))
830 home[--homelen] = '\0';
832 /* Skip the leading "~/". */
833 for (++val; ISSEP (*val); val++)
836 *pstring = concat_strings (home, "/", val, (char *) 0);
840 /* Convert "\" to "/". */
843 for (s = *pstring; *s; s++)
851 /* Like cmd_file, but strips trailing '/' characters. */
853 cmd_directory (const char *com, const char *val, void *place)
857 /* Call cmd_file() for tilde expansion and separator
858 canonicalization (backslash -> slash under Windows). These
859 things should perhaps be in a separate function. */
860 if (!cmd_file (com, val, place))
865 while (t > s && *--t == '/')
871 /* Split VAL by space to a vector of values, and append those values
872 to vector pointed to by the PLACE argument. If VAL is empty, the
873 PLACE vector is cleared instead. */
876 cmd_vector (const char *com, const char *val, void *place)
878 char ***pvec = (char ***)place;
881 *pvec = merge_vecs (*pvec, sepstring (val));
891 cmd_directory_vector (const char *com, const char *val, void *place)
893 char ***pvec = (char ***)place;
897 /* Strip the trailing slashes from directories. */
900 seps = sepstring (val);
901 for (t = seps; t && *t; t++)
903 int len = strlen (*t);
904 /* Skip degenerate case of root directory. */
907 if ((*t)[len - 1] == '/')
908 (*t)[len - 1] = '\0';
911 *pvec = merge_vecs (*pvec, seps);
921 /* Engine for cmd_bytes and cmd_bytes_large: converts a string such as
922 "100k" or "2.5G" to a floating point number. */
925 parse_bytes_helper (const char *val, double *result)
928 const char *end = val + strlen (val);
930 /* Check for "inf". */
931 if (0 == strcmp (val, "inf"))
937 /* Strip trailing whitespace. */
938 while (val < end && ISSPACE (end[-1]))
943 switch (TOLOWER (end[-1]))
946 --end, mult = 1024.0;
949 --end, mult = 1048576.0;
952 --end, mult = 1073741824.0;
955 --end, mult = 1099511627776.0;
958 /* Not a recognized suffix: assume it's a digit. (If not,
959 simple_atof will raise an error.) */
963 /* Skip leading and trailing whitespace. */
964 while (val < end && ISSPACE (*val))
966 while (val < end && ISSPACE (end[-1]))
971 if (!simple_atof (val, end, &number) || number < 0)
974 *result = number * mult;
978 /* Parse VAL as a number and set its value to PLACE (which should
981 By default, the value is assumed to be in bytes. If "K", "M", or
982 "G" are appended, the value is multiplied with 1<<10, 1<<20, or
983 1<<30, respectively. Floating point values are allowed and are
984 cast to integer before use. The idea is to be able to use things
985 like 1.5k instead of "1536".
987 The string "inf" is returned as 0.
989 In case of error, 0 is returned and memory pointed to by PLACE
990 remains unmodified. */
993 cmd_bytes (const char *com, const char *val, void *place)
996 if (!parse_bytes_helper (val, &byte_value))
998 fprintf (stderr, _("%s: %s: Invalid byte value `%s'\n"),
999 exec_name, com, val);
1002 *(wgint *)place = (wgint)byte_value;
1006 /* Like cmd_bytes, but PLACE is interpreted as a pointer to
1007 LARGE_INT. It works by converting the string to double, therefore
1008 working with values up to 2^53-1 without loss of precision. This
1009 value (8192 TB) is large enough to serve for a while. */
1012 cmd_bytes_large (const char *com, const char *val, void *place)
1015 if (!parse_bytes_helper (val, &byte_value))
1017 fprintf (stderr, _("%s: %s: Invalid byte value `%s'\n"),
1018 exec_name, com, val);
1021 *(LARGE_INT *)place = (LARGE_INT)byte_value;
1025 /* Store the value of VAL to *OUT. The value is a time period, by
1026 default expressed in seconds, but also accepting suffixes "m", "h",
1027 "d", and "w" for minutes, hours, days, and weeks respectively. */
1030 cmd_time (const char *com, const char *val, void *place)
1032 double number, mult;
1033 const char *end = val + strlen (val);
1035 /* Strip trailing whitespace. */
1036 while (val < end && ISSPACE (end[-1]))
1042 fprintf (stderr, _("%s: %s: Invalid time period `%s'\n"),
1043 exec_name, com, val);
1047 switch (TOLOWER (end[-1]))
1050 --end, mult = 1; /* seconds */
1053 --end, mult = 60; /* minutes */
1056 --end, mult = 3600; /* hours */
1059 --end, mult = 86400.0; /* days */
1062 --end, mult = 604800.0; /* weeks */
1065 /* Not a recognized suffix: assume it belongs to the number.
1066 (If not, simple_atof will raise an error.) */
1070 /* Skip leading and trailing whitespace. */
1071 while (val < end && ISSPACE (*val))
1073 while (val < end && ISSPACE (end[-1]))
1078 if (!simple_atof (val, end, &number))
1081 *(double *)place = number * mult;
1087 cmd_cert_type (const char *com, const char *val, void *place)
1089 static const struct decode_item choices[] = {
1090 { "pem", keyfile_pem },
1091 { "der", keyfile_asn1 },
1092 { "asn1", keyfile_asn1 },
1094 int ok = decode_string (val, choices, countof (choices), place);
1096 fprintf (stderr, _("%s: %s: Invalid value `%s'.\n"), exec_name, com, val);
1101 /* Specialized helper functions, used by `commands' to handle some
1102 options specially. */
1104 static int check_user_specified_header PARAMS ((const char *));
1107 cmd_spec_dirstruct (const char *com, const char *val, void *place_ignored)
1109 if (!cmd_boolean (com, val, &opt.dirstruct))
1111 /* Since dirstruct behaviour is explicitly changed, no_dirstruct
1112 must be affected inversely. */
1114 opt.no_dirstruct = 0;
1116 opt.no_dirstruct = 1;
1121 cmd_spec_header (const char *com, const char *val, void *place_ignored)
1123 /* Empty value means reset the list of headers. */
1126 free_vec (opt.user_headers);
1127 opt.user_headers = NULL;
1131 if (!check_user_specified_header (val))
1133 fprintf (stderr, _("%s: %s: Invalid header `%s'.\n"),
1134 exec_name, com, val);
1137 opt.user_headers = vec_append (opt.user_headers, val);
1142 cmd_spec_htmlify (const char *com, const char *val, void *place_ignored)
1144 int flag = cmd_boolean (com, val, &opt.htmlify);
1145 if (flag && !opt.htmlify)
1146 opt.remove_listing = 0;
1150 /* Set the "mirror" mode. It means: recursive download, timestamping,
1151 no limit on max. recursion depth, and don't remove listings. */
1154 cmd_spec_mirror (const char *com, const char *val, void *place_ignored)
1158 if (!cmd_boolean (com, val, &mirror))
1163 if (!opt.no_dirstruct)
1165 opt.timestamping = 1;
1166 opt.reclevel = INFINITE_RECURSION;
1167 opt.remove_listing = 0;
1172 /* Validate --prefer-family and set the choice. Allowed values are
1173 "IPv4", "IPv6", and "none". */
1176 cmd_spec_prefer_family (const char *com, const char *val, void *place_ignored)
1178 static const struct decode_item choices[] = {
1179 { "IPv4", prefer_ipv4 },
1180 { "IPv6", prefer_ipv6 },
1181 { "none", prefer_none },
1183 int ok = decode_string (val, choices, countof (choices),
1184 (int *) &opt.prefer_family);
1186 fprintf (stderr, _("%s: %s: Invalid value `%s'.\n"), exec_name, com, val);
1190 /* Set progress.type to VAL, but verify that it's a valid progress
1191 implementation before that. */
1194 cmd_spec_progress (const char *com, const char *val, void *place_ignored)
1196 if (!valid_progress_implementation_p (val))
1198 fprintf (stderr, _("%s: %s: Invalid progress type `%s'.\n"),
1199 exec_name, com, val);
1202 xfree_null (opt.progress_type);
1204 /* Don't call set_progress_implementation here. It will be called
1205 in main() when it becomes clear what the log output is. */
1206 opt.progress_type = xstrdup (val);
1210 /* Set opt.recursive to VAL as with cmd_boolean. If opt.recursive is
1211 set to true, also set opt.dirstruct to 1, unless opt.no_dirstruct
1215 cmd_spec_recursive (const char *com, const char *val, void *place_ignored)
1217 if (!cmd_boolean (com, val, &opt.recursive))
1221 if (opt.recursive && !opt.no_dirstruct)
1228 cmd_spec_restrict_file_names (const char *com, const char *val, void *place_ignored)
1230 int restrict_os = opt.restrict_files_os;
1231 int restrict_ctrl = opt.restrict_files_ctrl;
1233 const char *end = strchr (val, ',');
1235 end = val + strlen (val);
1237 #define VAL_IS(string_literal) BOUNDED_EQUAL (val, end, string_literal)
1239 if (VAL_IS ("unix"))
1240 restrict_os = restrict_unix;
1241 else if (VAL_IS ("windows"))
1242 restrict_os = restrict_windows;
1243 else if (VAL_IS ("nocontrol"))
1249 _("%s: %s: Invalid restriction `%s', use `unix' or `windows'.\n"),
1250 exec_name, com, val);
1258 if (!strcmp (end + 1, "nocontrol"))
1264 opt.restrict_files_os = restrict_os;
1265 opt.restrict_files_ctrl = restrict_ctrl;
1271 cmd_spec_secure_protocol (const char *com, const char *val, void *place)
1273 static const struct decode_item choices[] = {
1274 { "auto", secure_protocol_auto },
1275 { "sslv2", secure_protocol_sslv2 },
1276 { "sslv3", secure_protocol_sslv3 },
1277 { "tlsv1", secure_protocol_tlsv1 },
1279 int ok = decode_string (val, choices, countof (choices), place);
1281 fprintf (stderr, _("%s: %s: Invalid value `%s'.\n"), exec_name, com, val);
1286 /* Set all three timeout values. */
1289 cmd_spec_timeout (const char *com, const char *val, void *place_ignored)
1292 if (!cmd_time (com, val, &value))
1294 opt.read_timeout = value;
1295 opt.connect_timeout = value;
1296 opt.dns_timeout = value;
1301 cmd_spec_useragent (const char *com, const char *val, void *place_ignored)
1303 /* Disallow embedded newlines. */
1304 if (strchr (val, '\n'))
1306 fprintf (stderr, _("%s: %s: Invalid value `%s'.\n"),
1307 exec_name, com, val);
1310 xfree_null (opt.useragent);
1311 opt.useragent = xstrdup (val);
1315 /* Miscellaneous useful routines. */
1317 /* A very simple atoi clone, more useful than atoi because it works on
1318 delimited strings, and has error reportage. Returns 1 on success,
1319 0 on failure. If successful, stores result to *DEST. */
1322 simple_atoi (const char *beg, const char *end, int *dest)
1326 const char *p = beg;
1328 while (p < end && ISSPACE (*p))
1330 if (p < end && (*p == '-' || *p == '+'))
1332 negative = (*p == '-');
1338 /* Read negative numbers in a separate loop because the most
1339 negative integer cannot be represented as a positive number. */
1342 for (; p < end && ISDIGIT (*p); p++)
1344 int next = (10 * result) + (*p - '0');
1346 return 0; /* overflow */
1350 for (; p < end && ISDIGIT (*p); p++)
1352 int next = (10 * result) - (*p - '0');
1354 return 0; /* underflow */
1365 /* Trivial atof, with error reporting. Handles "<digits>[.<digits>]",
1366 doesn't handle exponential notation. Returns 1 on success, 0 on
1367 failure. In case of success, stores its result to *DEST. */
1370 simple_atof (const char *beg, const char *end, double *dest)
1379 const char *p = beg;
1381 while (p < end && ISSPACE (*p))
1383 if (p < end && (*p == '-' || *p == '+'))
1385 negative = (*p == '-');
1389 for (; p < end; p++)
1395 result = (10 * result) + (ch - '0');
1397 result += (ch - '0') / (divider *= 10);
1419 /* Verify that the user-specified header in S is valid. It must
1420 contain a colon preceded by non-white-space characters and must not
1421 contain newlines. */
1424 check_user_specified_header (const char *s)
1428 for (p = s; *p && *p != ':' && !ISSPACE (*p); p++);
1429 /* The header MUST contain `:' preceded by at least one
1430 non-whitespace character. */
1431 if (*p != ':' || p == s)
1433 /* The header MUST NOT contain newlines. */
1434 if (strchr (s, '\n'))
1439 /* Decode VAL into a number, according to ITEMS. */
1442 decode_string (const char *val, const struct decode_item *items, int itemcount,
1446 for (i = 0; i < itemcount; i++)
1447 if (0 == strcasecmp (val, items[i].name))
1449 *place = items[i].code;
1456 void cleanup_html_url PARAMS ((void));
1457 void http_cleanup PARAMS ((void));
1460 /* Free the memory allocated by global variables. */
1464 /* Free external resources, close files, etc. */
1467 extern FILE *output_stream;
1469 fclose (output_stream);
1470 /* No need to check for error because Wget flushes its output (and
1471 checks for errors) after any data arrives. */
1474 /* We're exiting anyway so there's no real need to call free()
1475 hundreds of times. Skipping the frees will make Wget exit
1478 However, when detecting leaks, it's crucial to free() everything
1479 because then you can find the real leaks, i.e. the allocated
1480 memory which grows with the size of the program. */
1486 cleanup_html_url ();
1491 extern acc_t *netrc_list;
1492 free_netrc (netrc_list);
1494 xfree_null (opt.lfilename);
1495 xfree_null (opt.dir_prefix);
1496 xfree_null (opt.input_filename);
1497 xfree_null (opt.output_document);
1498 free_vec (opt.accepts);
1499 free_vec (opt.rejects);
1500 free_vec (opt.excludes);
1501 free_vec (opt.includes);
1502 free_vec (opt.domains);
1503 free_vec (opt.follow_tags);
1504 free_vec (opt.ignore_tags);
1505 xfree_null (opt.progress_type);
1506 xfree_null (opt.ftp_user);
1507 xfree_null (opt.ftp_passwd);
1508 xfree_null (opt.ftp_proxy);
1509 xfree_null (opt.https_proxy);
1510 xfree_null (opt.http_proxy);
1511 free_vec (opt.no_proxy);
1512 xfree_null (opt.useragent);
1513 xfree_null (opt.referer);
1514 xfree_null (opt.http_user);
1515 xfree_null (opt.http_passwd);
1516 free_vec (opt.user_headers);
1518 xfree_null (opt.cert_file);
1519 xfree_null (opt.private_key);
1520 xfree_null (opt.ca_directory);
1521 xfree_null (opt.ca_cert);
1522 xfree_null (opt.random_file);
1523 xfree_null (opt.egd_file);
1525 xfree_null (opt.bind_address);
1526 xfree_null (opt.cookies_input);
1527 xfree_null (opt.cookies_output);
1528 xfree_null (opt.user);
1529 xfree_null (opt.passwd);
1530 #endif /* DEBUG_MALLOC */