1 /* Miscellaneous declarations.
2 Copyright (C) 1995, 1996, 1997, 1998, 2003 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. */
30 /* This file contains declarations that are universally useful and
31 those that don't fit elsewhere. It also includes sysdep.h which
32 includes some often-needed system includes, like the obnoxious
33 <time.h> inclusion. */
38 /* Disable assertions when debug support is not compiled in. */
43 /* Define this if you want primitive but extensive malloc debugging.
44 It will make Wget extremely slow, so only do it in development
50 # define PARAMS(args) args
52 # define PARAMS(args) ()
56 /* `gettext (FOO)' is long to write, so we use `_(FOO)'. If NLS is
57 unavailable, _(STRING) simply returns STRING. */
59 # define _(string) gettext (string)
60 # ifdef HAVE_LIBINTL_H
62 # endif /* HAVE_LIBINTL_H */
63 #else /* not HAVE_NLS */
64 # define _(string) (string)
65 #endif /* not HAVE_NLS */
67 /* No-op version of gettext, used for constant strings. */
68 #define N_(string) (string)
70 /* I18N NOTE: You will notice that none of the DEBUGP messages are
71 marked as translatable. This is intentional, for a few reasons:
73 1) The debug messages are not meant for the users to look at, but
74 for the developers; as such, they should be considered more like
75 source comments than real program output.
77 2) The messages are numerous, and yet they are random and frivolous
78 ("double yuck!" and such). There would be a lot of work with no
81 3) Finally, the debug messages are meant to be a clue for me to
82 debug problems with Wget. If I get them in a language I don't
83 understand, debugging will become a new challenge of its own! */
86 /* Include these, so random files need not include them. */
89 /* locale independent replacement for ctype.h */
90 #include "safe-ctype.h"
92 #define DO_NOTHING do {} while (0)
94 /* Print X if debugging is enabled; a no-op otherwise. */
96 # define DEBUGP(x) do { if (opt.debug) { debug_logprintf x; } } while (0)
97 #else /* not ENABLE_DEBUG */
98 # define DEBUGP(x) DO_NOTHING
99 #endif /* not ENABLE_DEBUG */
101 /* Everything uses this, so include them here directly. */
104 /* Likewise for logging functions. */
107 /* Useful macros used across the code: */
109 /* The number of elements in an array. For example:
110 static char a[] = "foo"; -- countof(a) == 4 (note terminating \0)
111 int a[5] = {1, 2}; -- countof(a) == 5
112 char *a[] = { -- countof(a) == 3
115 #define countof(array) (sizeof (array) / sizeof ((array)[0]))
117 /* Zero out a value. */
118 #define xzero(x) memset (&(x), '\0', sizeof (x))
120 /* Convert an ASCII hex digit to the corresponding number between 0
121 and 15. H should be a hexadecimal digit that satisfies isxdigit;
122 otherwise, the result is undefined. */
123 #define XDIGIT_TO_NUM(h) ((h) < 'A' ? (h) - '0' : TOUPPER (h) - 'A' + 10)
124 #define X2DIGITS_TO_NUM(h1, h2) ((XDIGIT_TO_NUM (h1) << 4) + XDIGIT_TO_NUM (h2))
126 /* The reverse of the above: convert a number in the [0, 16) range to
127 the ASCII representation of the corresponding hexadecimal digit.
128 `+ 0' is there so you can't accidentally use it as an lvalue. */
129 #define XNUM_TO_DIGIT(x) ("0123456789ABCDEF"[x] + 0)
130 #define XNUM_TO_digit(x) ("0123456789abcdef"[x] + 0)
132 /* Copy the data delimited with BEG and END to alloca-allocated
133 storage, and zero-terminate it. Arguments are evaluated only once,
134 in the order BEG, END, PLACE. */
135 #define BOUNDED_TO_ALLOCA(beg, end, place) do { \
136 const char *BTA_beg = (beg); \
137 int BTA_len = (end) - BTA_beg; \
138 char **BTA_dest = &(place); \
139 *BTA_dest = alloca (BTA_len + 1); \
140 memcpy (*BTA_dest, BTA_beg, BTA_len); \
141 (*BTA_dest)[BTA_len] = '\0'; \
144 /* Return non-zero if string bounded between BEG and END is equal to
145 STRING_LITERAL. The comparison is case-sensitive. */
146 #define BOUNDED_EQUAL(beg, end, string_literal) \
147 ((end) - (beg) == sizeof (string_literal) - 1 \
148 && !memcmp (beg, string_literal, sizeof (string_literal) - 1))
150 /* The same as above, except the comparison is case-insensitive. */
151 #define BOUNDED_EQUAL_NO_CASE(beg, end, string_literal) \
152 ((end) - (beg) == sizeof (string_literal) - 1 \
153 && !strncasecmp (beg, string_literal, sizeof (string_literal) - 1))
155 /* Like ptr=strdup(str), but allocates the space for PTR on the stack.
156 This cannot be an expression because this is not portable:
157 #define STRDUP_ALLOCA(str) (strcpy (alloca (strlen (str) + 1), str))
158 The problem is that some compilers can't handle alloca() being an
159 argument to a function. */
161 #define STRDUP_ALLOCA(ptr, str) do { \
162 char **SA_dest = &(ptr); \
163 const char *SA_src = (str); \
164 *SA_dest = (char *)alloca (strlen (SA_src) + 1); \
165 strcpy (*SA_dest, SA_src); \
168 /* Generally useful if you want to avoid arbitrary size limits but
169 don't need a full dynamic array. Assumes that BASEVAR points to a
170 malloced array of TYPE objects (or possibly a NULL pointer, if
171 SIZEVAR is 0), with the total size stored in SIZEVAR. This macro
172 will realloc BASEVAR as necessary so that it can hold at least
173 NEEDED_SIZE objects. The reallocing is done by doubling, which
174 ensures constant amortized time per element. */
176 #define DO_REALLOC(basevar, sizevar, needed_size, type) do { \
177 long DR_needed_size = (needed_size); \
178 long DR_newsize = 0; \
179 while ((sizevar) < (DR_needed_size)) { \
180 DR_newsize = sizevar << 1; \
181 if (DR_newsize < 16) \
183 (sizevar) = DR_newsize; \
186 basevar = (type *)xrealloc (basevar, DR_newsize * sizeof (type)); \
189 extern const char *exec_name;
191 /* Document type ("dt") flags */
194 TEXTHTML = 0x0001, /* document is of type text/html
195 or application/xhtml+xml */
196 RETROKF = 0x0002, /* retrieval was OK */
197 HEAD_ONLY = 0x0004, /* only send the HEAD request */
198 SEND_NOCACHE = 0x0008, /* send Pragma: no-cache directive */
199 ACCEPTRANGES = 0x0010, /* Accept-ranges header was found */
200 ADDED_HTML_EXTENSION = 0x0020 /* added ".html" extension due to -E */
203 /* Universal error type -- used almost everywhere. Error reporting of
204 this detail is not generally used or needed and should be
208 NOCONERROR, HOSTERR, CONSOCKERR, CONERROR, CONSSLERR,
209 CONIMPOSSIBLE, NEWLOCATION, NOTENOUGHMEM, CONPORTERR,
210 BINDERR, BINDOK, LISTENERR, ACCEPTERR, ACCEPTOK,
211 CONCLOSED, FTPOK, FTPLOGINC, FTPLOGREFUSED, FTPPORTERR,
212 FTPNSFOD, FTPRETROK, FTPUNKNOWNTYPE, FTPRERR,
213 FTPREXC, FTPSRVERR, FTPRETRINT, FTPRESTFAIL, URLERROR,
214 FOPENERR, FWRITEERR, HOK, HLEXC, HEOF,
215 HERR, RETROK, RECLEVELEXC, FTPACCDENIED, WRONGCODE,
216 FTPINVPASV, FTPNOPASV,
217 CONTNOTSUPPORTED, RETRUNNEEDED, RETRFINISHED, READERR, TRYLIMEXC,
218 URLBADPATTERN, FILEBADFILE, RANGEERR, RETRBADPATTERN,
219 RETNOTSUP, ROBOTSOK, NOROBOTS, PROXERR, AUTHFAILED,
220 QUOTEXC, WRITEFAILED,
221 SSLERRCERTFILE,SSLERRCERTKEY,SSLERRCTXCREATE
224 /* In case old systems don't have EAFNOSUPPORT, which we use below. */
226 # define EAFNOSUPPORT EINVAL
229 #define CONNECT_ERROR(err) (( (err) == EAFNOSUPPORT \
231 || ((err) == ECONNREFUSED \
232 && !opt.retry_connrefused)) \
233 ? CONIMPOSSIBLE : CONERROR)