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- /* Copyright 1999-2004 The Apache Software Foundation
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
- /*
- * The ap_vsnprintf/ap_snprintf functions are based on, and used with the
- * permission of, the SIO stdio-replacement strx_* functions by Panos
- * Tsirigotis <panos@alumni.cs.colorado.edu> for xinetd.
- */
-
- #ifndef APACHE_AP_H
- #define APACHE_AP_H
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- API_EXPORT(char *) ap_cpystrn(char *, const char *, size_t);
- int ap_slack(int, int);
- int ap_execle(const char *, const char *, ...);
- int ap_execve(const char *, char * const argv[], char * const envp[]);
- API_EXPORT(int) ap_getpass(const char *prompt, char *pwbuf, size_t bufsiz);
-
- #ifndef ap_strtol
- API_EXPORT(long) ap_strtol(const char *nptr, char **endptr, int base);
- #endif
-
- /* small utility macros to make things easier to read */
-
- #ifdef WIN32
- #define ap_killpg(x, y)
- #else
- #ifdef NO_KILLPG
- #define ap_killpg(x, y) (kill (-(x), (y)))
- #else
- #define ap_killpg(x, y) (killpg ((x), (y)))
- #endif
- #endif /* WIN32 */
-
- /* ap_vformatter() is a generic printf-style formatting routine
- * with some extensions. The extensions are:
- *
- * %pA takes a struct in_addr *, and prints it as a.b.c.d
- * %pI takes a struct sockaddr_in * and prints it as a.b.c.d:port
- * %pp takes a void * and outputs it in hex
- *
- * The %p hacks are to force gcc's printf warning code to skip
- * over a pointer argument without complaining. This does
- * mean that the ANSI-style %p (output a void * in hex format) won't
- * work as expected at all, but that seems to be a fair trade-off
- * for the increased robustness of having printf-warnings work.
- *
- * Additionally, ap_vformatter allows for arbitrary output methods
- * using the ap_vformatter_buff and flush_func.
- *
- * The ap_vformatter_buff has two elements curpos and endpos.
- * curpos is where ap_vformatter will write the next byte of output.
- * It proceeds writing output to curpos, and updating curpos, until
- * either the end of output is reached, or curpos == endpos (i.e. the
- * buffer is full).
- *
- * If the end of output is reached, ap_vformatter returns the
- * number of bytes written.
- *
- * When the buffer is full, the flush_func is called. The flush_func
- * can return -1 to indicate that no further output should be attempted,
- * and ap_vformatter will return immediately with -1. Otherwise
- * the flush_func should flush the buffer in whatever manner is
- * appropriate, re-initialize curpos and endpos, and return 0.
- *
- * Note that flush_func is only invoked as a result of attempting to
- * write another byte at curpos when curpos >= endpos. So for
- * example, it's possible when the output exactly matches the buffer
- * space available that curpos == endpos will be true when
- * ap_vformatter returns.
- *
- * ap_vformatter does not call out to any other code, it is entirely
- * self-contained. This allows the callers to do things which are
- * otherwise "unsafe". For example, ap_psprintf uses the "scratch"
- * space at the unallocated end of a block, and doesn't actually
- * complete the allocation until ap_vformatter returns. ap_psprintf
- * would be completely broken if ap_vformatter were to call anything
- * that used a pool. Similarly http_bprintf() uses the "scratch"
- * space at the end of its output buffer, and doesn't actually note
- * that the space is in use until it either has to flush the buffer
- * or until ap_vformatter returns.
- */
-
- typedef struct {
- char *curpos;
- char *endpos;
- } ap_vformatter_buff;
-
- API_EXPORT(int) ap_vformatter(int (*flush_func)(ap_vformatter_buff *),
- ap_vformatter_buff *, const char *fmt, va_list ap);
-
- /* These are snprintf implementations based on ap_vformatter().
- *
- * Note that various standards and implementations disagree on the return
- * value of snprintf, and side-effects due to %n in the formatting string.
- * ap_snprintf behaves as follows:
- *
- * Process the format string until the entire string is exhausted, or
- * the buffer fills. If the buffer fills then stop processing immediately
- * (so no further %n arguments are processed), and return the buffer
- * length. In all cases the buffer is NUL terminated. The return value
- * is the number of characters placed in the buffer, excluding the
- * terminating NUL. All this implies that, at most, (len-1) characters
- * will be copied over; if the return value is >= len, then truncation
- * occured.
- *
- * In no event does ap_snprintf return a negative number.
- */
- API_EXPORT_NONSTD(int) ap_snprintf(char *buf, size_t len, const char *format,...)
- __attribute__((format(printf,3,4)));
- API_EXPORT(int) ap_vsnprintf(char *buf, size_t len, const char *format,
- va_list ap);
- /* Simple BASE64 encode/decode functions.
- *
- * As we might encode binary strings, hence we require the length of
- * the incoming plain source. And return the length of what we decoded.
- *
- * The decoding function takes any non valid char (i.e. whitespace, \0
- * or anything non A-Z,0-9 etc as terminal.
- *
- * plain strings/binary sequences are not assumed '\0' terminated. Encoded
- * strings are neither. But propably should.
- *
- */
- API_EXPORT(int) ap_base64encode_len(int len);
- API_EXPORT(int) ap_base64encode(char * coded_dst, const char *plain_src,int len_plain_src);
- API_EXPORT(int) ap_base64encode_binary(char * coded_dst, const unsigned char *plain_src,int len_plain_src);
-
- API_EXPORT(int) ap_base64decode_len(const char * coded_src);
- API_EXPORT(int) ap_base64decode(char * plain_dst, const char *coded_src);
- API_EXPORT(int) ap_base64decode_binary(unsigned char * plain_dst, const char *coded_src);
-
- /* Password validation, as used in AuthType Basic which is able to cope
- * (based on the prefix) with the SHA1, Apache's internal MD5 and (depending
- * on your platform either plain or crypt(3) passwords.
- */
- API_EXPORT(char *) ap_validate_password(const char *passwd, const char *hash);
-
- #ifdef __cplusplus
- }
- #endif
-
- #endif /* !APACHE_AP_H */
-