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