version 1.1, 2011/11/09 01:24:23 |
version 1.9, 2011/12/04 22:52:50 |
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/* $Id$ */ |
/* $Id$ */ |
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/* |
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* Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#ifdef HAVE_CONFIG_H |
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#include "config.h" |
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#endif |
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#include <sys/param.h> |
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#include <sys/wait.h> |
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#include <assert.h> |
#include <assert.h> |
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#include <ctype.h> |
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#include <errno.h> |
#include <fcntl.h> |
#include <fcntl.h> |
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#include <limits.h> |
#include <regex.h> |
#include <regex.h> |
#include <stdio.h> |
#include <stdio.h> |
#include <stdarg.h> |
#include <stdarg.h> |
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#include <stdint.h> |
#include <stdlib.h> |
#include <stdlib.h> |
#include <string.h> |
#include <string.h> |
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#include <unistd.h> |
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#include "apropos.h" |
#include "apropos_db.h" |
#include "mandoc.h" |
#include "mandoc.h" |
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#include "mdoc.h" |
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#include "man.h" |
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#include "main.h" |
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#include "manpath.h" |
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/* |
#ifdef __linux__ |
* The page a request is trying to make. |
# include <db_185.h> |
*/ |
#else |
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# include <db.h> |
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#endif |
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enum page { |
enum page { |
PAGE_INDEX, |
PAGE_INDEX, |
PAGE_SEARCH, |
PAGE_SEARCH, |
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PAGE_SHOW, |
PAGE__MAX |
PAGE__MAX |
}; |
}; |
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/* |
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* Key-value pair. |
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* Both key and val are on the heap. |
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*/ |
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struct kval { |
struct kval { |
char *key; |
char *key; |
char *val; |
char *val; |
}; |
}; |
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/* |
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* The media type, determined by suffix, of the requesting or responding |
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* context. |
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*/ |
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enum media { |
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MEDIA_HTML, |
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MEDIA__MAX |
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}; |
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/* |
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* An HTTP request. |
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*/ |
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struct req { |
struct req { |
struct kval *fields; /* query fields */ |
struct kval *fields; |
size_t fieldsz; |
size_t fieldsz; |
enum media media; |
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enum page page; |
enum page page; |
}; |
}; |
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static void html_printtext(const char *); |
static int atou(const char *, unsigned *); |
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static void catman(const char *); |
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static void format(const char *); |
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static void html_print(const char *); |
static int kval_decode(char *); |
static int kval_decode(char *); |
static void kval_parse(struct kval **, size_t *, char *); |
static void kval_parse(struct kval **, size_t *, char *); |
static void kval_free(struct kval *, size_t); |
static void kval_free(struct kval *, size_t); |
static void pg_index(const struct req *, char *); |
static void pg_index(const struct manpaths *, |
static void pg_search(const struct req *, char *); |
const struct req *, char *); |
static void pg_searchres(struct rec *, size_t, void *); |
static void pg_search(const struct manpaths *, |
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const struct req *, char *); |
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static void pg_show(const struct manpaths *, |
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const struct req *, char *); |
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static void resp_bad(void); |
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static void resp_baddb(void); |
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static void resp_badexpr(const struct req *); |
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static void resp_badmanual(void); |
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static void resp_badpage(void); |
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static void resp_begin_html(int, const char *); |
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static void resp_begin_http(int, const char *); |
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static void resp_end_html(void); |
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static void resp_index(const struct req *); |
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static void resp_search(struct res *, size_t, void *); |
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static void resp_searchform(const struct req *); |
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static const char *progname; |
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static const char *cache; |
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static const char *host; |
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static const char * const pages[PAGE__MAX] = { |
static const char * const pages[PAGE__MAX] = { |
"index", /* PAGE_INDEX */ |
"index", /* PAGE_INDEX */ |
"search", /* PAGE_SEARCH */ |
"search", /* PAGE_SEARCH */ |
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"show", /* PAGE_SHOW */ |
}; |
}; |
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static const char * const medias[MEDIA__MAX] = { |
/* |
"html", /* MEDIA_HTML */ |
* This is just OpenBSD's strtol(3) suggestion. |
}; |
* I use it instead of strtonum(3) for portability's sake. |
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*/ |
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static int |
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atou(const char *buf, unsigned *v) |
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{ |
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char *ep; |
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long lval; |
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errno = 0; |
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lval = strtol(buf, &ep, 10); |
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if (buf[0] == '\0' || *ep != '\0') |
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return(0); |
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if ((errno == ERANGE && (lval == LONG_MAX || |
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lval == LONG_MIN)) || |
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(lval > UINT_MAX || lval < 0)) |
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return(0); |
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*v = (unsigned int)lval; |
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return(1); |
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} |
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/* |
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* Print a word, escaping HTML along the way. |
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* This will pass non-ASCII straight to output: be warned! |
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*/ |
static void |
static void |
html_printtext(const char *p) |
html_print(const char *p) |
{ |
{ |
char c; |
char c; |
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if (NULL == p) |
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return; |
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while ('\0' != *p) |
while ('\0' != *p) |
switch ((c = *p++)) { |
switch ((c = *p++)) { |
Line 103 kval_free(struct kval *p, size_t sz) |
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Line 169 kval_free(struct kval *p, size_t sz) |
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/* |
/* |
* Parse out key-value pairs from an HTTP request variable. |
* Parse out key-value pairs from an HTTP request variable. |
* This can be either a cookie or a POST/GET string. |
* This can be either a cookie or a POST/GET string, although man.cgi |
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* uses only GET for simplicity. |
*/ |
*/ |
static void |
static void |
kval_parse(struct kval **kv, size_t *kvsz, char *p) |
kval_parse(struct kval **kv, size_t *kvsz, char *p) |
Line 164 kval_parse(struct kval **kv, size_t *kvsz, char *p) |
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Line 231 kval_parse(struct kval **kv, size_t *kvsz, char *p) |
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} |
} |
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/* |
/* |
* In-place HTTP-decode a string. The standard explanation is that this |
* HTTP-decode a string. The standard explanation is that this turns |
* turns "%4e+foo" into "n foo" in the regular way. This is done |
* "%4e+foo" into "n foo" in the regular way. This is done in-place |
* in-place over the allocated string. |
* over the allocated string. |
*/ |
*/ |
static int |
static int |
kval_decode(char *p) |
kval_decode(char *p) |
Line 197 kval_decode(char *p) |
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Line 264 kval_decode(char *p) |
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return(1); |
return(1); |
} |
} |
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static void |
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resp_begin_http(int code, const char *msg) |
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{ |
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/* ARGSUSED */ |
if (200 != code) |
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printf("Status: %d %s\n", code, msg); |
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puts("Content-Type: text/html; charset=utf-8" "\n" |
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"Cache-Control: no-cache" "\n" |
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"Pragma: no-cache" "\n" |
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""); |
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fflush(stdout); |
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} |
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static void |
static void |
pg_index(const struct req *req, char *path) |
resp_begin_html(int code, const char *msg) |
{ |
{ |
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resp_begin_http(code, msg); |
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puts("<!DOCTYPE HTML PUBLIC " "\n" |
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" \"-//W3C//DTD HTML 4.01//EN\"" "\n" |
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" \"http://www.w3.org/TR/html4/strict.dtd\">" "\n" |
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"<HTML>" "\n" |
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" <HEAD>" "\n" |
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" <TITLE>System Manpage Reference</TITLE>" "\n" |
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" </HEAD>" "\n" |
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" <BODY>" "\n" |
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"<!-- Begin page content. //-->"); |
} |
} |
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static void |
static void |
pg_searchres(struct rec *recs, size_t sz, void *arg) |
resp_end_html(void) |
{ |
{ |
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puts(" </BODY>\n</HTML>"); |
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} |
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static void |
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resp_searchform(const struct req *req) |
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{ |
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int i; |
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const char *expr, *sec, *arch; |
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expr = sec = arch = ""; |
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for (i = 0; i < (int)req->fieldsz; i++) |
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if (0 == strcmp(req->fields[i].key, "expr")) |
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expr = req->fields[i].val; |
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else if (0 == strcmp(req->fields[i].key, "sec")) |
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sec = req->fields[i].val; |
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else if (0 == strcmp(req->fields[i].key, "arch")) |
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arch = req->fields[i].val; |
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puts("<!-- Begin search form. //-->"); |
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printf("<FORM ACTION=\""); |
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html_print(progname); |
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printf("/search.html\" METHOD=\"get\">\n"); |
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puts(" <FIELDSET>" "\n" |
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" <INPUT TYPE=\"submit\" VALUE=\"Search:\">"); |
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printf(" Terms: <INPUT TYPE=\"text\" " |
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"SIZE=\"60\" NAME=\"expr\" VALUE=\""); |
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html_print(expr); |
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puts("\">"); |
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printf(" Section: <INPUT TYPE=\"text\" " |
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"SIZE=\"4\" NAME=\"sec\" VALUE=\""); |
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html_print(sec); |
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puts("\">"); |
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printf(" Arch: <INPUT TYPE=\"text\" " |
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"SIZE=\"8\" NAME=\"arch\" VALUE=\""); |
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html_print(arch); |
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puts("\">"); |
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puts(" </FIELDSET>\n</FORM>\n<!-- End search form. //-->"); |
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} |
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static void |
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resp_index(const struct req *req) |
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{ |
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resp_begin_html(200, NULL); |
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resp_searchform(req); |
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resp_end_html(); |
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} |
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static void |
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resp_badpage(void) |
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{ |
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resp_begin_html(404, "Not Found"); |
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puts("<P>Page not found.</P>"); |
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resp_end_html(); |
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} |
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static void |
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resp_badmanual(void) |
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{ |
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resp_begin_html(404, "Not Found"); |
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puts("<P>Requested manual not found.</P>"); |
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resp_end_html(); |
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} |
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static void |
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resp_badexpr(const struct req *req) |
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{ |
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resp_begin_html(200, NULL); |
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resp_searchform(req); |
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puts("<P>Your search didn't work.</P>"); |
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resp_end_html(); |
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} |
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static void |
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resp_bad(void) |
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{ |
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resp_begin_html(500, "Internal Server Error"); |
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puts("<P>Generic badness happened.</P>"); |
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resp_end_html(); |
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} |
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static void |
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resp_baddb(void) |
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{ |
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resp_begin_html(500, "Internal Server Error"); |
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puts("<P>Your database is broken.</P>"); |
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resp_end_html(); |
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} |
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static void |
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resp_search(struct res *r, size_t sz, void *arg) |
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{ |
int i; |
int i; |
const char *pg; |
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if (NULL == (pg = getenv("SCRIPT_NAME"))) |
if (1 == sz) { |
pg = ""; |
/* |
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* If we have just one result, then jump there now |
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* without any delay. |
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*/ |
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puts("Status: 303 See Other"); |
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printf("Location: http://%s%s/show/%u/%u.html\n", |
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host, progname, |
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r[0].volume, r[0].rec); |
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puts("Content-Type: text/html; charset=utf-8\n"); |
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return; |
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} |
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resp_begin_html(200, NULL); |
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resp_searchform((const struct req *)arg); |
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if (0 == sz) |
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puts("<P>No results found.</P>"); |
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for (i = 0; i < (int)sz; i++) { |
for (i = 0; i < (int)sz; i++) { |
printf("<A HREF=\"%s/show/%u.html\">", |
printf("<P><A HREF=\""); |
pg, recs[i].rec); |
html_print(progname); |
html_printtext(recs[i].title); |
printf("/show/%u/%u.html\">", r[i].volume, r[i].rec); |
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html_print(r[i].title); |
putchar('('); |
putchar('('); |
html_printtext(recs[i].cat); |
html_print(r[i].cat); |
puts(")</A>"); |
if (r[i].arch && '\0' != *r[i].arch) { |
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putchar('/'); |
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html_print(r[i].arch); |
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} |
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printf(")</A> "); |
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html_print(r[i].desc); |
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puts("</P>"); |
} |
} |
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resp_end_html(); |
} |
} |
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/* ARGSUSED */ |
static void |
static void |
pg_search(const struct req *req, char *path) |
pg_index(const struct manpaths *ps, const struct req *req, char *path) |
{ |
{ |
int i; |
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struct opts opt; |
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for (i = 0; i < (int)req->fieldsz; i++) |
resp_index(req); |
if (0 == strcmp(req->fields[i].key, "key")) |
} |
break; |
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if (i == (int)req->fieldsz) |
static void |
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catman(const char *file) |
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{ |
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int fd; |
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char buf[BUFSIZ]; |
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ssize_t ssz; |
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if (-1 == (fd = open(file, O_RDONLY, 0))) { |
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resp_baddb(); |
return; |
return; |
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} |
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resp_begin_http(200, NULL); |
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while ((ssz = read(fd, buf, BUFSIZ)) > 0) |
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write(STDOUT_FILENO, buf, (size_t)ssz); |
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if (ssz < 0) |
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perror(file); |
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close(fd); |
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} |
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static void |
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format(const char *file) |
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{ |
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struct mparse *mp; |
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int fd; |
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struct mdoc *mdoc; |
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struct man *man; |
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void *vp; |
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enum mandoclevel rc; |
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if (-1 == (fd = open(file, O_RDONLY, 0))) { |
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resp_baddb(); |
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return; |
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} |
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mp = mparse_alloc(MPARSE_AUTO, MANDOCLEVEL_FATAL, NULL, NULL); |
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rc = mparse_readfd(mp, fd, file); |
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close(fd); |
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if (rc >= MANDOCLEVEL_FATAL) { |
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resp_baddb(); |
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return; |
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} |
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mparse_result(mp, &mdoc, &man); |
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vp = html_alloc(NULL); |
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if (NULL != mdoc) { |
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resp_begin_http(200, NULL); |
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html_mdoc(vp, mdoc); |
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} else if (NULL != man) { |
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resp_begin_http(200, NULL); |
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html_man(vp, man); |
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} else |
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resp_baddb(); |
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html_free(vp); |
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mparse_free(mp); |
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} |
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static void |
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pg_show(const struct manpaths *ps, const struct req *req, char *path) |
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{ |
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char *sub; |
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char file[MAXPATHLEN]; |
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const char *fn, *cp; |
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int rc; |
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unsigned int vol, rec; |
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DB *idx; |
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DBT key, val; |
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if (NULL == path) { |
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resp_badmanual(); |
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return; |
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} else if (NULL == (sub = strrchr(path, '/'))) { |
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resp_badmanual(); |
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return; |
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} else |
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*sub++ = '\0'; |
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if ( ! (atou(path, &vol) && atou(sub, &rec))) { |
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resp_badmanual(); |
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return; |
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} else if (vol >= (unsigned int)ps->sz) { |
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resp_badmanual(); |
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return; |
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} |
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strlcpy(file, ps->paths[vol], MAXPATHLEN); |
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strlcat(file, "/mandoc.index", MAXPATHLEN); |
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/* Open the index recno(3) database. */ |
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idx = dbopen(file, O_RDONLY, 0, DB_RECNO, NULL); |
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if (NULL == idx) { |
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resp_baddb(); |
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return; |
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} |
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key.data = &rec; |
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key.size = 4; |
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if (0 != (rc = (*idx->get)(idx, &key, &val, 0))) { |
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rc < 0 ? resp_baddb() : resp_badmanual(); |
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goto out; |
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} |
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cp = (char *)val.data; |
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if (NULL == (fn = memchr(cp, '\0', val.size))) |
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resp_baddb(); |
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else if (++fn - cp >= (int)val.size) |
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resp_baddb(); |
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else if (NULL == memchr(fn, '\0', val.size - (fn - cp))) |
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resp_baddb(); |
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else { |
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strlcpy(file, ps->paths[vol], MAXPATHLEN); |
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strlcat(file, "/", MAXPATHLEN); |
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strlcat(file, fn, MAXPATHLEN); |
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if (0 == strcmp(cp, "cat")) |
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catman(file); |
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else |
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format(file); |
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} |
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out: |
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(*idx->close)(idx); |
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} |
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static void |
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pg_search(const struct manpaths *ps, const struct req *req, char *path) |
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{ |
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size_t tt; |
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int i, sz, rc; |
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const char *ep, *start; |
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char **cp; |
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struct opts opt; |
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struct expr *expr; |
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expr = NULL; |
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cp = NULL; |
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ep = NULL; |
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sz = 0; |
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memset(&opt, 0, sizeof(struct opts)); |
memset(&opt, 0, sizeof(struct opts)); |
opt.types = TYPE_NAME | TYPE_DESC; |
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apropos_search(&opt, req->fields[i].val, NULL, pg_searchres); |
for (sz = i = 0; i < (int)req->fieldsz; i++) |
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if (0 == strcmp(req->fields[i].key, "expr")) |
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ep = req->fields[i].val; |
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else if (0 == strcmp(req->fields[i].key, "sec")) |
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opt.cat = req->fields[i].val; |
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else if (0 == strcmp(req->fields[i].key, "arch")) |
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opt.arch = req->fields[i].val; |
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/* |
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* Poor man's tokenisation. |
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* Just break apart by spaces. |
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* Yes, this is half-ass. But it works for now. |
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*/ |
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|
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while (ep && isspace((unsigned char)*ep)) |
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ep++; |
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|
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while (ep && '\0' != *ep) { |
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cp = mandoc_realloc(cp, (sz + 1) * sizeof(char *)); |
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start = ep; |
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while ('\0' != *ep && ! isspace((unsigned char)*ep)) |
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ep++; |
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cp[sz] = mandoc_malloc((ep - start) + 1); |
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memcpy(cp[sz], start, ep - start); |
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cp[sz++][ep - start] = '\0'; |
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while (isspace((unsigned char)*ep)) |
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ep++; |
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} |
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rc = -1; |
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|
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/* |
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* Pump down into apropos backend. |
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* The resp_search() function is called with the results. |
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*/ |
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|
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if (NULL != (expr = exprcomp(sz, cp, &tt))) |
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rc = apropos_search |
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(ps->sz, ps->paths, &opt, |
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expr, tt, (void *)req, resp_search); |
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|
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/* ...unless errors occured. */ |
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if (0 == rc) |
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resp_baddb(); |
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else if (-1 == rc) |
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resp_badexpr(req); |
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for (i = 0; i < sz; i++) |
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free(cp[i]); |
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|
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free(cp); |
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exprfree(expr); |
} |
} |
|
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int |
int |
|
|
{ |
{ |
int i; |
int i; |
struct req req; |
struct req req; |
char *p; |
char *p, *path, *subpath; |
char *path, *subpath, *suffix; |
struct manpaths paths; |
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|
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/* HTTP init: read and parse the query string. */ |
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progname = getenv("SCRIPT_NAME"); |
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if (NULL == progname) |
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progname = ""; |
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|
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cache = getenv("CACHE_DIR"); |
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if (NULL == cache) |
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cache = "/cache/man.cgi"; |
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|
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if (-1 == chdir(cache)) { |
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resp_bad(); |
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return(EXIT_FAILURE); |
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} |
|
|
|
host = getenv("HTTP_HOST"); |
|
if (NULL == host) |
|
host = "localhost"; |
|
|
memset(&req, 0, sizeof(struct req)); |
memset(&req, 0, sizeof(struct req)); |
|
|
if (NULL != (p = getenv("QUERY_STRING"))) |
if (NULL != (p = getenv("QUERY_STRING"))) |
kval_parse(&req.fields, &req.fieldsz, p); |
kval_parse(&req.fields, &req.fieldsz, p); |
|
|
suffix = subpath = path = NULL; |
/* Resolve leading subpath component. */ |
|
|
req.media = MEDIA_HTML; |
subpath = path = NULL; |
req.page = PAGE__MAX; |
req.page = PAGE__MAX; |
|
|
if (NULL == (path = getenv("PATH_INFO")) || '\0' == *path) |
if (NULL == (path = getenv("PATH_INFO")) || '\0' == *path) |
req.page = PAGE_INDEX; |
req.page = PAGE_INDEX; |
|
|
if (NULL != path && '/' == *path && '\0' == *++path) |
if (NULL != path && '/' == *path && '\0' == *++path) |
req.page = PAGE_INDEX; |
req.page = PAGE_INDEX; |
|
|
if (NULL != path && NULL != (suffix = strrchr(path, '.'))) |
/* Strip file suffix. */ |
if (NULL != suffix && NULL == strchr(suffix, '/')) |
|
*suffix++ = '\0'; |
|
|
|
|
if (NULL != path && NULL != (p = strrchr(path, '.'))) |
|
if (NULL != p && NULL == strchr(p, '/')) |
|
*p++ = '\0'; |
|
|
|
/* Resolve subpath component. */ |
|
|
if (NULL != path && NULL != (subpath = strchr(path, '/'))) |
if (NULL != path && NULL != (subpath = strchr(path, '/'))) |
*subpath++ = '\0'; |
*subpath++ = '\0'; |
|
|
if (NULL != suffix && '\0' != *suffix) |
/* Map path into one we recognise. */ |
for (i = 0; i < (int)MEDIA__MAX; i++) |
|
if (0 == strcmp(medias[i], suffix)) { |
|
req.media = (enum media)i; |
|
break; |
|
} |
|
|
|
if (NULL != path && '\0' != *path) |
if (NULL != path && '\0' != *path) |
for (i = 0; i < (int)PAGE__MAX; i++) |
for (i = 0; i < (int)PAGE__MAX; i++) |
|
|
break; |
break; |
} |
} |
|
|
|
/* Initialise MANPATH. */ |
|
|
|
memset(&paths, 0, sizeof(struct manpaths)); |
|
manpath_manconf("etc/catman.conf", &paths); |
|
|
|
/* Route pages. */ |
|
|
switch (req.page) { |
switch (req.page) { |
case (PAGE_INDEX): |
case (PAGE_INDEX): |
pg_index(&req, subpath); |
pg_index(&paths, &req, subpath); |
break; |
break; |
case (PAGE_SEARCH): |
case (PAGE_SEARCH): |
pg_search(&req, subpath); |
pg_search(&paths, &req, subpath); |
break; |
break; |
|
case (PAGE_SHOW): |
|
pg_show(&paths, &req, subpath); |
|
break; |
default: |
default: |
/* Blah */ |
resp_badpage(); |
break; |
break; |
} |
} |
|
|
|
manpath_free(&paths); |
kval_free(req.fields, req.fieldsz); |
kval_free(req.fields, req.fieldsz); |
|
|
return(EXIT_SUCCESS); |
return(EXIT_SUCCESS); |
} |
} |