minix/external/bsd/mdocml/dist/cgi.c
Lionel Sambuc 92395e9c3f external/bsd/mdocml: Update
Change-Id: I17b54e52e8322676d83ed4386f586f8ef3029f72
2014-03-01 09:04:56 +01:00

1210 lines
25 KiB
C

/* $Vendor-Id: cgi.c,v 1.39 2011/12/25 17:49:52 kristaps Exp $ */
/*
* Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <sys/param.h>
#include <sys/wait.h>
#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <dirent.h>
#include <fcntl.h>
#include <limits.h>
#include <regex.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "apropos_db.h"
#include "mandoc.h"
#include "mdoc.h"
#include "man.h"
#include "main.h"
#include "manpath.h"
#include "mandocdb.h"
#ifdef __linux__
# include <db_185.h>
#else
# include <db.h>
#endif
enum page {
PAGE_INDEX,
PAGE_SEARCH,
PAGE_SHOW,
PAGE__MAX
};
struct paths {
char *name;
char *path;
};
/*
* A query as passed to the search function.
*/
struct query {
const char *arch; /* architecture */
const char *sec; /* manual section */
const char *expr; /* unparsed expression string */
int manroot; /* manroot index (or -1)*/
int whatis; /* whether whatis mode */
int legacy; /* whether legacy mode */
};
struct req {
struct query q;
struct paths *p;
size_t psz;
enum page page;
};
static int atou(const char *, unsigned *);
static void catman(const struct req *, const char *);
static int cmp(const void *, const void *);
static void format(const struct req *, const char *);
static void html_print(const char *);
static void html_printquery(const struct req *);
static void html_putchar(char);
static int http_decode(char *);
static void http_parse(struct req *, char *);
static void http_print(const char *);
static void http_putchar(char);
static void http_printquery(const struct req *);
static int pathstop(DIR *);
static void pathgen(DIR *, char *, struct req *);
static void pg_index(const struct req *, char *);
static void pg_search(const struct req *, char *);
static void pg_show(const struct req *, char *);
static void resp_bad(void);
static void resp_baddb(void);
static void resp_error400(void);
static void resp_error404(const char *);
static void resp_begin_html(int, const char *);
static void resp_begin_http(int, const char *);
static void resp_end_html(void);
static void resp_index(const struct req *);
static void resp_search(struct res *, size_t, void *);
static void resp_searchform(const struct req *);
static const char *progname; /* cgi script name */
static const char *cache; /* cache directory */
static const char *css; /* css directory */
static const char *host; /* hostname */
static const char * const pages[PAGE__MAX] = {
"index", /* PAGE_INDEX */
"search", /* PAGE_SEARCH */
"show", /* PAGE_SHOW */
};
/*
* This is just OpenBSD's strtol(3) suggestion.
* I use it instead of strtonum(3) for portability's sake.
*/
static int
atou(const char *buf, unsigned *v)
{
char *ep;
long lval;
errno = 0;
lval = strtol(buf, &ep, 10);
if (buf[0] == '\0' || *ep != '\0')
return(0);
if ((errno == ERANGE && (lval == LONG_MAX ||
lval == LONG_MIN)) ||
(lval > INT_MAX || lval < 0))
return(0);
*v = (unsigned int)lval;
return(1);
}
/*
* Print a character, escaping HTML along the way.
* This will pass non-ASCII straight to output: be warned!
*/
static void
html_putchar(char c)
{
switch (c) {
case ('"'):
printf("&quote;");
break;
case ('&'):
printf("&amp;");
break;
case ('>'):
printf("&gt;");
break;
case ('<'):
printf("&lt;");
break;
default:
putchar((unsigned char)c);
break;
}
}
static void
http_printquery(const struct req *req)
{
printf("&expr=");
http_print(req->q.expr ? req->q.expr : "");
printf("&sec=");
http_print(req->q.sec ? req->q.sec : "");
printf("&arch=");
http_print(req->q.arch ? req->q.arch : "");
}
static void
html_printquery(const struct req *req)
{
printf("&amp;expr=");
html_print(req->q.expr ? req->q.expr : "");
printf("&amp;sec=");
html_print(req->q.sec ? req->q.sec : "");
printf("&amp;arch=");
html_print(req->q.arch ? req->q.arch : "");
}
static void
http_print(const char *p)
{
if (NULL == p)
return;
while ('\0' != *p)
http_putchar(*p++);
}
/*
* Call through to html_putchar().
* Accepts NULL strings.
*/
static void
html_print(const char *p)
{
if (NULL == p)
return;
while ('\0' != *p)
html_putchar(*p++);
}
/*
* Parse out key-value pairs from an HTTP request variable.
* This can be either a cookie or a POST/GET string, although man.cgi
* uses only GET for simplicity.
*/
static void
http_parse(struct req *req, char *p)
{
char *key, *val, *manroot;
int i, legacy;
memset(&req->q, 0, sizeof(struct query));
req->q.whatis = 1;
legacy = -1;
manroot = NULL;
while ('\0' != *p) {
key = p;
val = NULL;
p += (int)strcspn(p, ";&");
if ('\0' != *p)
*p++ = '\0';
if (NULL != (val = strchr(key, '=')))
*val++ = '\0';
if ('\0' == *key || NULL == val || '\0' == *val)
continue;
/* Just abort handling. */
if ( ! http_decode(key))
break;
if (NULL != val && ! http_decode(val))
break;
if (0 == strcmp(key, "expr"))
req->q.expr = val;
else if (0 == strcmp(key, "query"))
req->q.expr = val;
else if (0 == strcmp(key, "sec"))
req->q.sec = val;
else if (0 == strcmp(key, "sektion"))
req->q.sec = val;
else if (0 == strcmp(key, "arch"))
req->q.arch = val;
else if (0 == strcmp(key, "manpath"))
manroot = val;
else if (0 == strcmp(key, "apropos"))
legacy = 0 == strcmp(val, "0");
else if (0 == strcmp(key, "op"))
req->q.whatis = 0 == strcasecmp(val, "whatis");
}
/* Test for old man.cgi compatibility mode. */
if (legacy == 0) {
req->q.whatis = 0;
req->q.legacy = 1;
} else if (legacy > 0) {
req->q.legacy = 1;
req->q.whatis = 1;
}
/*
* Section "0" means no section when in legacy mode.
* For some man.cgi scripts, "default" arch is none.
*/
if (req->q.legacy && NULL != req->q.sec)
if (0 == strcmp(req->q.sec, "0"))
req->q.sec = NULL;
if (req->q.legacy && NULL != req->q.arch)
if (0 == strcmp(req->q.arch, "default"))
req->q.arch = NULL;
/* Default to first manroot. */
if (NULL != manroot) {
for (i = 0; i < (int)req->psz; i++)
if (0 == strcmp(req->p[i].name, manroot))
break;
req->q.manroot = i < (int)req->psz ? i : -1;
}
}
static void
http_putchar(char c)
{
if (isalnum((unsigned char)c)) {
putchar((unsigned char)c);
return;
} else if (' ' == c) {
putchar('+');
return;
}
printf("%%%.2x", c);
}
/*
* HTTP-decode a string. The standard explanation is that this turns
* "%4e+foo" into "n foo" in the regular way. This is done in-place
* over the allocated string.
*/
static int
http_decode(char *p)
{
char hex[3];
int c;
hex[2] = '\0';
for ( ; '\0' != *p; p++) {
if ('%' == *p) {
if ('\0' == (hex[0] = *(p + 1)))
return(0);
if ('\0' == (hex[1] = *(p + 2)))
return(0);
if (1 != sscanf(hex, "%x", &c))
return(0);
if ('\0' == c)
return(0);
*p = (char)c;
memmove(p + 1, p + 3, strlen(p + 3) + 1);
} else
*p = '+' == *p ? ' ' : *p;
}
*p = '\0';
return(1);
}
static void
resp_begin_http(int code, const char *msg)
{
if (200 != code)
printf("Status: %d %s\n", code, msg);
puts("Content-Type: text/html; charset=utf-8\n"
"Cache-Control: no-cache\n"
"Pragma: no-cache\n"
"");
fflush(stdout);
}
static void
resp_begin_html(int code, const char *msg)
{
resp_begin_http(code, msg);
printf("<!DOCTYPE HTML PUBLIC "
" \"-//W3C//DTD HTML 4.01//EN\""
" \"http://www.w3.org/TR/html4/strict.dtd\">\n"
"<HTML>\n"
"<HEAD>\n"
"<META HTTP-EQUIV=\"Content-Type\""
" CONTENT=\"text/html; charset=utf-8\">\n"
"<LINK REL=\"stylesheet\" HREF=\"%s/man-cgi.css\""
" TYPE=\"text/css\" media=\"all\">\n"
"<LINK REL=\"stylesheet\" HREF=\"%s/man.css\""
" TYPE=\"text/css\" media=\"all\">\n"
"<TITLE>System Manpage Reference</TITLE>\n"
"</HEAD>\n"
"<BODY>\n"
"<!-- Begin page content. //-->\n", css, css);
}
static void
resp_end_html(void)
{
puts("</BODY>\n"
"</HTML>");
}
static void
resp_searchform(const struct req *req)
{
int i;
puts("<!-- Begin search form. //-->");
printf("<DIV ID=\"mancgi\">\n"
"<FORM ACTION=\"%s/search.html\" METHOD=\"get\">\n"
"<FIELDSET>\n"
"<LEGEND>Search Parameters</LEGEND>\n"
"<INPUT TYPE=\"submit\" NAME=\"op\""
" VALUE=\"Whatis\"> or \n"
"<INPUT TYPE=\"submit\" NAME=\"op\""
" VALUE=\"apropos\"> for manuals satisfying \n"
"<INPUT TYPE=\"text\" NAME=\"expr\" VALUE=\"",
progname);
html_print(req->q.expr ? req->q.expr : "");
printf("\">, section "
"<INPUT TYPE=\"text\""
" SIZE=\"4\" NAME=\"sec\" VALUE=\"");
html_print(req->q.sec ? req->q.sec : "");
printf("\">, arch "
"<INPUT TYPE=\"text\""
" SIZE=\"8\" NAME=\"arch\" VALUE=\"");
html_print(req->q.arch ? req->q.arch : "");
printf("\">");
if (req->psz > 1) {
puts(", <SELECT NAME=\"manpath\">");
for (i = 0; i < (int)req->psz; i++) {
printf("<OPTION %s VALUE=\"",
(i == req->q.manroot) ||
(0 == i && -1 == req->q.manroot) ?
"SELECTED=\"selected\"" : "");
html_print(req->p[i].name);
printf("\">");
html_print(req->p[i].name);
puts("</OPTION>");
}
puts("</SELECT>");
}
puts(".\n"
"<INPUT TYPE=\"reset\" VALUE=\"Reset\">\n"
"</FIELDSET>\n"
"</FORM>\n"
"</DIV>");
puts("<!-- End search form. //-->");
}
static void
resp_index(const struct req *req)
{
resp_begin_html(200, NULL);
resp_searchform(req);
resp_end_html();
}
static void
resp_error400(void)
{
resp_begin_html(400, "Query Malformed");
printf("<H1>Malformed Query</H1>\n"
"<P>\n"
"The query your entered was malformed.\n"
"Try again from the\n"
"<A HREF=\"%s/index.html\">main page</A>.\n"
"</P>", progname);
resp_end_html();
}
static void
resp_error404(const char *page)
{
resp_begin_html(404, "Not Found");
puts("<H1>Page Not Found</H1>\n"
"<P>\n"
"The page you're looking for, ");
printf("<B>");
html_print(page);
printf("</B>,\n"
"could not be found.\n"
"Try searching from the\n"
"<A HREF=\"%s/index.html\">main page</A>.\n"
"</P>", progname);
resp_end_html();
}
static void
resp_bad(void)
{
resp_begin_html(500, "Internal Server Error");
puts("<P>Generic badness happened.</P>");
resp_end_html();
}
static void
resp_baddb(void)
{
resp_begin_html(500, "Internal Server Error");
puts("<P>Your database is broken.</P>");
resp_end_html();
}
static void
resp_search(struct res *r, size_t sz, void *arg)
{
int i;
const struct req *req;
req = (const struct req *)arg;
if (sz > 0)
assert(req->q.manroot >= 0);
if (1 == sz) {
/*
* If we have just one result, then jump there now
* without any delay.
*/
puts("Status: 303 See Other");
printf("Location: http://%s%s/show/%d/%u/%u.html?",
host, progname, req->q.manroot,
r[0].volume, r[0].rec);
http_printquery(req);
puts("\n"
"Content-Type: text/html; charset=utf-8\n");
return;
}
qsort(r, sz, sizeof(struct res), cmp);
resp_begin_html(200, NULL);
resp_searchform(req);
puts("<DIV CLASS=\"results\">");
if (0 == sz) {
printf("<P>\n"
"No %s results found.\n",
req->q.whatis ? "whatis" : "apropos");
if (req->q.whatis) {
printf("(Try "
"<A HREF=\"%s/search.html?op=apropos",
progname);
html_printquery(req);
puts("\">apropos</A>?)");
}
puts("</P>");
puts("</DIV>");
resp_end_html();
return;
}
puts("<TABLE>");
for (i = 0; i < (int)sz; i++) {
printf("<TR>\n"
"<TD CLASS=\"title\">\n"
"<A HREF=\"%s/show/%d/%u/%u.html?",
progname, req->q.manroot,
r[i].volume, r[i].rec);
html_printquery(req);
printf("\">");
html_print(r[i].title);
putchar('(');
html_print(r[i].cat);
if (r[i].arch && '\0' != *r[i].arch) {
putchar('/');
html_print(r[i].arch);
}
printf(")</A>\n"
"</TD>\n"
"<TD CLASS=\"desc\">");
html_print(r[i].desc);
puts("</TD>\n"
"</TR>");
}
puts("</TABLE>\n"
"</DIV>");
resp_end_html();
}
/* ARGSUSED */
static void
pg_index(const struct req *req, char *path)
{
resp_index(req);
}
static void
catman(const struct req *req, const char *file)
{
FILE *f;
size_t len;
int i;
char *p;
int italic, bold;
if (NULL == (f = fopen(file, "r"))) {
resp_baddb();
return;
}
resp_begin_html(200, NULL);
resp_searchform(req);
puts("<DIV CLASS=\"catman\">\n"
"<PRE>");
while (NULL != (p = fgetln(f, &len))) {
bold = italic = 0;
for (i = 0; i < (int)len - 1; i++) {
/*
* This means that the catpage is out of state.
* Ignore it and keep going (although the
* catpage is bogus).
*/
if ('\b' == p[i] || '\n' == p[i])
continue;
/*
* Print a regular character.
* Close out any bold/italic scopes.
* If we're in back-space mode, make sure we'll
* have something to enter when we backspace.
*/
if ('\b' != p[i + 1]) {
if (italic)
printf("</I>");
if (bold)
printf("</B>");
italic = bold = 0;
html_putchar(p[i]);
continue;
} else if (i + 2 >= (int)len)
continue;
/* Italic mode. */
if ('_' == p[i]) {
if (bold)
printf("</B>");
if ( ! italic)
printf("<I>");
bold = 0;
italic = 1;
i += 2;
html_putchar(p[i]);
continue;
}
/*
* Handle funny behaviour troff-isms.
* These grok'd from the original man2html.c.
*/
if (('+' == p[i] && 'o' == p[i + 2]) ||
('o' == p[i] && '+' == p[i + 2]) ||
('|' == p[i] && '=' == p[i + 2]) ||
('=' == p[i] && '|' == p[i + 2]) ||
('*' == p[i] && '=' == p[i + 2]) ||
('=' == p[i] && '*' == p[i + 2]) ||
('*' == p[i] && '|' == p[i + 2]) ||
('|' == p[i] && '*' == p[i + 2])) {
if (italic)
printf("</I>");
if (bold)
printf("</B>");
italic = bold = 0;
putchar('*');
i += 2;
continue;
} else if (('|' == p[i] && '-' == p[i + 2]) ||
('-' == p[i] && '|' == p[i + 1]) ||
('+' == p[i] && '-' == p[i + 1]) ||
('-' == p[i] && '+' == p[i + 1]) ||
('+' == p[i] && '|' == p[i + 1]) ||
('|' == p[i] && '+' == p[i + 1])) {
if (italic)
printf("</I>");
if (bold)
printf("</B>");
italic = bold = 0;
putchar('+');
i += 2;
continue;
}
/* Bold mode. */
if (italic)
printf("</I>");
if ( ! bold)
printf("<B>");
bold = 1;
italic = 0;
i += 2;
html_putchar(p[i]);
}
/*
* Clean up the last character.
* We can get to a newline; don't print that.
*/
if (italic)
printf("</I>");
if (bold)
printf("</B>");
if (i == (int)len - 1 && '\n' != p[i])
html_putchar(p[i]);
putchar('\n');
}
puts("</PRE>\n"
"</DIV>\n"
"</BODY>\n"
"</HTML>");
fclose(f);
}
static void
format(const struct req *req, const char *file)
{
struct mparse *mp;
int fd;
struct mdoc *mdoc;
struct man *man;
void *vp;
enum mandoclevel rc;
char opts[MAXPATHLEN + 128];
if (-1 == (fd = open(file, O_RDONLY, 0))) {
resp_baddb();
return;
}
mp = mparse_alloc(MPARSE_AUTO, MANDOCLEVEL_FATAL, NULL, NULL);
rc = mparse_readfd(mp, fd, file);
close(fd);
if (rc >= MANDOCLEVEL_FATAL) {
resp_baddb();
return;
}
snprintf(opts, sizeof(opts), "fragment,"
"man=%s/search.html?sec=%%S&expr=%%N,"
/*"includes=/cgi-bin/man.cgi/usr/include/%%I"*/,
progname);
mparse_result(mp, &mdoc, &man);
if (NULL == man && NULL == mdoc) {
resp_baddb();
mparse_free(mp);
return;
}
resp_begin_html(200, NULL);
resp_searchform(req);
vp = html_alloc(opts);
if (NULL != mdoc)
html_mdoc(vp, mdoc);
else
html_man(vp, man);
puts("</BODY>\n"
"</HTML>");
html_free(vp);
mparse_free(mp);
}
static void
pg_show(const struct req *req, char *path)
{
struct manpaths ps;
size_t sz;
char *sub;
char file[MAXPATHLEN];
const char *cp;
int rc, catm;
unsigned int vol, rec, mr;
DB *idx;
DBT key, val;
idx = NULL;
/* Parse out mroot, volume, and record from the path. */
if (NULL == path || NULL == (sub = strchr(path, '/'))) {
resp_error400();
return;
}
*sub++ = '\0';
if ( ! atou(path, &mr)) {
resp_error400();
return;
}
path = sub;
if (NULL == (sub = strchr(path, '/'))) {
resp_error400();
return;
}
*sub++ = '\0';
if ( ! atou(path, &vol) || ! atou(sub, &rec)) {
resp_error400();
return;
} else if (mr >= (unsigned int)req->psz) {
resp_error400();
return;
}
/*
* Begin by chdir()ing into the manroot.
* This way we can pick up the database files, which are
* relative to the manpath root.
*/
if (-1 == chdir(req->p[(int)mr].path)) {
perror(req->p[(int)mr].path);
resp_baddb();
return;
}
memset(&ps, 0, sizeof(struct manpaths));
manpath_manconf(&ps, "etc/catman.conf");
if (vol >= (unsigned int)ps.sz) {
resp_error400();
goto out;
}
sz = strlcpy(file, ps.paths[vol], MAXPATHLEN);
assert(sz < MAXPATHLEN);
strlcat(file, "/", MAXPATHLEN);
strlcat(file, MANDOC_IDX, MAXPATHLEN);
/* Open the index recno(3) database. */
idx = dbopen(file, O_RDONLY, 0, DB_RECNO, NULL);
if (NULL == idx) {
perror(file);
resp_baddb();
goto out;
}
key.data = &rec;
key.size = 4;
if (0 != (rc = (*idx->get)(idx, &key, &val, 0))) {
rc < 0 ? resp_baddb() : resp_error400();
goto out;
} else if (0 == val.size) {
resp_baddb();
goto out;
}
cp = (char *)val.data;
catm = 'c' == *cp++;
if (NULL == memchr(cp, '\0', val.size - 1))
resp_baddb();
else {
file[(int)sz] = '\0';
strlcat(file, "/", MAXPATHLEN);
strlcat(file, cp, MAXPATHLEN);
if (catm)
catman(req, file);
else
format(req, file);
}
out:
if (idx)
(*idx->close)(idx);
manpath_free(&ps);
}
static void
pg_search(const struct req *req, char *path)
{
size_t tt;
struct manpaths ps;
int i, sz, rc;
const char *ep, *start;
char **cp;
struct opts opt;
struct expr *expr;
if (req->q.manroot < 0 || 0 == req->psz) {
resp_search(NULL, 0, (void *)req);
return;
}
memset(&opt, 0, sizeof(struct opts));
ep = req->q.expr;
opt.arch = req->q.arch;
opt.cat = req->q.sec;
rc = -1;
sz = 0;
cp = NULL;
/*
* Begin by chdir()ing into the root of the manpath.
* This way we can pick up the database files, which are
* relative to the manpath root.
*/
assert(req->q.manroot < (int)req->psz);
if (-1 == (chdir(req->p[req->q.manroot].path))) {
perror(req->p[req->q.manroot].path);
resp_search(NULL, 0, (void *)req);
return;
}
memset(&ps, 0, sizeof(struct manpaths));
manpath_manconf(&ps, "etc/catman.conf");
/*
* Poor man's tokenisation: just break apart by spaces.
* Yes, this is half-ass. But it works for now.
*/
while (ep && isspace((unsigned char)*ep))
ep++;
while (ep && '\0' != *ep) {
cp = mandoc_realloc(cp, (sz + 1) * sizeof(char *));
start = ep;
while ('\0' != *ep && ! isspace((unsigned char)*ep))
ep++;
cp[sz] = mandoc_malloc((ep - start) + 1);
memcpy(cp[sz], start, ep - start);
cp[sz++][ep - start] = '\0';
while (isspace((unsigned char)*ep))
ep++;
}
/*
* Pump down into apropos backend.
* The resp_search() function is called with the results.
*/
expr = req->q.whatis ?
termcomp(sz, cp, &tt) : exprcomp(sz, cp, &tt);
if (NULL != expr)
rc = apropos_search
(ps.sz, ps.paths, &opt,
expr, tt, (void *)req, resp_search);
/* ...unless errors occured. */
if (0 == rc)
resp_baddb();
else if (-1 == rc)
resp_search(NULL, 0, (void *)req);
for (i = 0; i < sz; i++)
free(cp[i]);
free(cp);
exprfree(expr);
manpath_free(&ps);
}
int
main(void)
{
int i;
char buf[MAXPATHLEN];
DIR *cwd;
struct req req;
char *p, *path, *subpath;
/* Scan our run-time environment. */
if (NULL == (cache = getenv("CACHE_DIR")))
cache = "/cache/man.cgi";
if (NULL == (progname = getenv("SCRIPT_NAME")))
progname = "";
if (NULL == (css = getenv("CSS_DIR")))
css = "";
if (NULL == (host = getenv("HTTP_HOST")))
host = "localhost";
/*
* First we change directory into the cache directory so that
* subsequent scanning for manpath directories is rooted
* relative to the same position.
*/
if (-1 == chdir(cache)) {
perror(cache);
resp_bad();
return(EXIT_FAILURE);
} else if (NULL == (cwd = opendir(cache))) {
perror(cache);
resp_bad();
return(EXIT_FAILURE);
}
memset(&req, 0, sizeof(struct req));
strlcpy(buf, ".", MAXPATHLEN);
pathgen(cwd, buf, &req);
closedir(cwd);
/* Next parse out the query string. */
if (NULL != (p = getenv("QUERY_STRING")))
http_parse(&req, p);
/*
* Now juggle paths to extract information.
* We want to extract our filetype (the file suffix), the
* initial path component, then the trailing component(s).
* Start with leading subpath component.
*/
subpath = path = NULL;
req.page = PAGE__MAX;
if (NULL == (path = getenv("PATH_INFO")) || '\0' == *path)
req.page = PAGE_INDEX;
if (NULL != path && '/' == *path && '\0' == *++path)
req.page = PAGE_INDEX;
/* Strip file suffix. */
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, '/')))
*subpath++ = '\0';
/* Map path into one we recognise. */
if (NULL != path && '\0' != *path)
for (i = 0; i < (int)PAGE__MAX; i++)
if (0 == strcmp(pages[i], path)) {
req.page = (enum page)i;
break;
}
/* Route pages. */
switch (req.page) {
case (PAGE_INDEX):
pg_index(&req, subpath);
break;
case (PAGE_SEARCH):
pg_search(&req, subpath);
break;
case (PAGE_SHOW):
pg_show(&req, subpath);
break;
default:
resp_error404(path);
break;
}
for (i = 0; i < (int)req.psz; i++) {
free(req.p[i].path);
free(req.p[i].name);
}
free(req.p);
return(EXIT_SUCCESS);
}
static int
cmp(const void *p1, const void *p2)
{
return(strcasecmp(((const struct res *)p1)->title,
((const struct res *)p2)->title));
}
/*
* Check to see if an "etc" path consists of a catman.conf file. If it
* does, that means that the path contains a tree created by catman(8)
* and should be used for indexing.
*/
static int
pathstop(DIR *dir)
{
struct dirent *d;
while (NULL != (d = readdir(dir)))
if (DT_REG == d->d_type)
if (0 == strcmp(d->d_name, "catman.conf"))
return(1);
return(0);
}
/*
* Scan for indexable paths.
* This adds all paths with "etc/catman.conf" to the buffer.
*/
static void
pathgen(DIR *dir, char *path, struct req *req)
{
struct dirent *d;
char *cp;
DIR *cd;
int rc;
size_t sz, ssz;
sz = strlcat(path, "/", MAXPATHLEN);
if (sz >= MAXPATHLEN) {
fprintf(stderr, "%s: Path too long", path);
return;
}
/*
* First, scan for the "etc" directory.
* If it's found, then see if it should cause us to stop. This
* happens when a catman.conf is found in the directory.
*/
rc = 0;
while (0 == rc && NULL != (d = readdir(dir))) {
if (DT_DIR != d->d_type || strcmp(d->d_name, "etc"))
continue;
path[(int)sz] = '\0';
ssz = strlcat(path, d->d_name, MAXPATHLEN);
if (ssz >= MAXPATHLEN) {
fprintf(stderr, "%s: Path too long", path);
return;
} else if (NULL == (cd = opendir(path))) {
perror(path);
return;
}
rc = pathstop(cd);
closedir(cd);
}
if (rc > 0) {
/* This also strips the trailing slash. */
path[(int)--sz] = '\0';
req->p = mandoc_realloc
(req->p,
(req->psz + 1) * sizeof(struct paths));
/*
* Strip out the leading "./" unless we're just a ".",
* in which case use an empty string as our name.
*/
req->p[(int)req->psz].path = mandoc_strdup(path);
req->p[(int)req->psz].name =
cp = mandoc_strdup(path + (1 == sz ? 1 : 2));
req->psz++;
/*
* The name is just the path with all the slashes taken
* out of it. Simple but effective.
*/
for ( ; '\0' != *cp; cp++)
if ('/' == *cp)
*cp = ' ';
return;
}
/*
* If no etc/catman.conf was found, recursively enter child
* directory and continue scanning.
*/
rewinddir(dir);
while (NULL != (d = readdir(dir))) {
if (DT_DIR != d->d_type || '.' == d->d_name[0])
continue;
path[(int)sz] = '\0';
ssz = strlcat(path, d->d_name, MAXPATHLEN);
if (ssz >= MAXPATHLEN) {
fprintf(stderr, "%s: Path too long", path);
return;
} else if (NULL == (cd = opendir(path))) {
perror(path);
return;
}
pathgen(cd, path, req);
closedir(cd);
}
}