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+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+/*
+ * This imagemap module started as a port of the original imagemap.c
+ * written by Rob McCool (11/13/93 robm@ncsa.uiuc.edu).
+ * This version includes the mapping algorithms found in version 1.3
+ * of imagemap.c.
+ *
+ * Contributors to this code include:
+ *
+ * Kevin Hughes, kevinh@pulua.hcc.hawaii.edu
+ *
+ * Eric Haines, erich@eye.com
+ * "macmartinized" polygon code copyright 1992 by Eric Haines, erich@eye.com
+ *
+ * Randy Terbush, randy@zyzzyva.com
+ * port to Apache module format, "base_uri" and support for relative URLs
+ *
+ * James H. Cloos, Jr., cloos@jhcloos.com
+ * Added point datatype, using code in NCSA's version 1.8 imagemap.c
+ * program, as distributed with version 1.4.1 of their server.
+ * The point code is originally added by Craig Milo Rogers, Rogers@ISI.Edu
+ *
+ * Nathan Kurz, nate@tripod.com
+ * Rewrite/reorganization. New handling of default, base and relative URLs.
+ * New Configuration directives:
+ * ImapMenu {none, formatted, semiformatted, unformatted}
+ * ImapDefault {error, nocontent, referer, menu, URL}
+ * ImapBase {map, referer, URL}
+ * Support for creating non-graphical menu added. (backwards compatible):
+ * Old: directive URL [x,y ...]
+ * New: directive URL "Menu text" [x,y ...]
+ * or: directive URL x,y ... "Menu text"
+ * Map format and menu concept courtesy Joshua Bell, jsbell@acs.ucalgary.ca.
+ *
+ * Mark Cox, mark@ukweb.com, Allow relative URLs even when no base specified
+ */
+
+#include "apr.h"
+#include "apr_strings.h"
+#include "apr_lib.h"
+
+#define APR_WANT_STDIO /* for sscanf() */
+#define APR_WANT_STRFUNC
+#include "apr_want.h"
+
+#include "ap_config.h"
+#include "httpd.h"
+#include "http_config.h"
+#include "http_request.h"
+#include "http_core.h"
+#include "http_protocol.h"
+#include "http_main.h"
+#include "http_log.h"
+#include "util_script.h"
+#include "mod_core.h"
+
+
+#define IMAP_MAGIC_TYPE "application/x-httpd-imap"
+#define MAXVERTS 100
+#define X 0
+#define Y 1
+
+#define IMAP_MENU_DEFAULT "formatted"
+#define IMAP_DEFAULT_DEFAULT "nocontent"
+#define IMAP_BASE_DEFAULT "map"
+
+module AP_MODULE_DECLARE_DATA imagemap_module;
+
+typedef struct {
+ char *imap_menu;
+ char *imap_default;
+ char *imap_base;
+} imap_conf_rec;
+
+static void *create_imap_dir_config(apr_pool_t *p, char *dummy)
+{
+ imap_conf_rec *icr =
+ (imap_conf_rec *) apr_palloc(p, sizeof(imap_conf_rec));
+
+ icr->imap_menu = NULL;
+ icr->imap_default = NULL;
+ icr->imap_base = NULL;
+
+ return icr;
+}
+
+static void *merge_imap_dir_configs(apr_pool_t *p, void *basev, void *addv)
+{
+ imap_conf_rec *new = (imap_conf_rec *) apr_palloc(p, sizeof(imap_conf_rec));
+ imap_conf_rec *base = (imap_conf_rec *) basev;
+ imap_conf_rec *add = (imap_conf_rec *) addv;
+
+ new->imap_menu = add->imap_menu ? add->imap_menu : base->imap_menu;
+ new->imap_default = add->imap_default ? add->imap_default
+ : base->imap_default;
+ new->imap_base = add->imap_base ? add->imap_base : base->imap_base;
+
+ return new;
+}
+
+
+static const command_rec imap_cmds[] =
+{
+ AP_INIT_TAKE1("ImapMenu", ap_set_string_slot,
+ (void *)APR_OFFSETOF(imap_conf_rec, imap_menu), OR_INDEXES,
+ "the type of menu generated: none, formatted, semiformatted, "
+ "unformatted"),
+ AP_INIT_TAKE1("ImapDefault", ap_set_string_slot,
+ (void *)APR_OFFSETOF(imap_conf_rec, imap_default), OR_INDEXES,
+ "the action taken if no match: error, nocontent, referer, "
+ "menu, URL"),
+ AP_INIT_TAKE1("ImapBase", ap_set_string_slot,
+ (void *)APR_OFFSETOF(imap_conf_rec, imap_base), OR_INDEXES,
+ "the base for all URL's: map, referer, URL (or start of)"),
+ {NULL}
+};
+
+static int pointinrect(const double point[2], double coords[MAXVERTS][2])
+{
+ double max[2], min[2];
+ if (coords[0][X] > coords[1][X]) {
+ max[0] = coords[0][X];
+ min[0] = coords[1][X];
+ }
+ else {
+ max[0] = coords[1][X];
+ min[0] = coords[0][X];
+ }
+
+ if (coords[0][Y] > coords[1][Y]) {
+ max[1] = coords[0][Y];
+ min[1] = coords[1][Y];
+ }
+ else {
+ max[1] = coords[1][Y];
+ min[1] = coords[0][Y];
+ }
+
+ return ((point[X] >= min[0] && point[X] <= max[0]) &&
+ (point[Y] >= min[1] && point[Y] <= max[1]));
+}
+
+static int pointincircle(const double point[2], double coords[MAXVERTS][2])
+{
+ double radius1, radius2;
+
+ radius1 = ((coords[0][Y] - coords[1][Y]) * (coords[0][Y] - coords[1][Y]))
+ + ((coords[0][X] - coords[1][X]) * (coords[0][X] - coords[1][X]));
+
+ radius2 = ((coords[0][Y] - point[Y]) * (coords[0][Y] - point[Y]))
+ + ((coords[0][X] - point[X]) * (coords[0][X] - point[X]));
+
+ return (radius2 <= radius1);
+}
+
+#define fmin(a,b) (((a)>(b))?(b):(a))
+#define fmax(a,b) (((a)>(b))?(a):(b))
+
+static int pointinpoly(const double point[2], double pgon[MAXVERTS][2])
+{
+ int i, numverts, crossings = 0;
+ double x = point[X], y = point[Y];
+
+ for (numverts = 0; numverts < MAXVERTS && pgon[numverts][X] != -1;
+ numverts++) {
+ /* just counting the vertexes */
+ }
+
+ for (i = 0; i < numverts; i++) {
+ double x1=pgon[i][X];
+ double y1=pgon[i][Y];
+ double x2=pgon[(i + 1) % numverts][X];
+ double y2=pgon[(i + 1) % numverts][Y];
+ double d=(y - y1) * (x2 - x1) - (x - x1) * (y2 - y1);
+
+ if ((y1 >= y) != (y2 >= y)) {
+ crossings +=y2 - y1 >= 0 ? d >= 0 : d <= 0;
+ }
+ if (!d && fmin(x1,x2) <= x && x <= fmax(x1,x2)
+ && fmin(y1,y2) <= y && y <= fmax(y1,y2)) {
+ return 1;
+ }
+ }
+ return crossings & 0x01;
+}
+
+
+static int is_closer(const double point[2], double coords[MAXVERTS][2],
+ double *closest)
+{
+ double dist_squared = ((point[X] - coords[0][X])
+ * (point[X] - coords[0][X]))
+ + ((point[Y] - coords[0][Y])
+ * (point[Y] - coords[0][Y]));
+
+ if (point[X] < 0 || point[Y] < 0) {
+ return (0); /* don't mess around with negative coordinates */
+ }
+
+ if (*closest < 0 || dist_squared < *closest) {
+ *closest = dist_squared;
+ return (1); /* if this is the first point or is the closest yet
+ set 'closest' equal to this distance^2 */
+ }
+
+ return (0); /* if it's not the first or closest */
+
+}
+
+static double get_x_coord(const char *args)
+{
+ char *endptr; /* we want it non-null */
+ double x_coord = -1; /* -1 is returned if no coordinate is given */
+
+ if (args == NULL) {
+ return (-1); /* in case we aren't passed anything */
+ }
+
+ while (*args && !apr_isdigit(*args) && *args != ',') {
+ args++; /* jump to the first digit, but not past
+ a comma or end */
+ }
+
+ x_coord = strtod(args, &endptr);
+
+ if (endptr > args) { /* if a conversion was made */
+ return (x_coord);
+ }
+
+ return (-1); /* else if no conversion was made,
+ or if no args was given */
+}
+
+static double get_y_coord(const char *args)
+{
+ char *endptr; /* we want it non-null */
+ const char *start_of_y = NULL;
+ double y_coord = -1; /* -1 is returned on error */
+
+ if (args == NULL) {
+ return (-1); /* in case we aren't passed anything */
+ }
+
+ start_of_y = ap_strchr_c(args, ','); /* the comma */
+
+ if (start_of_y) {
+
+ start_of_y++; /* start looking at the character after
+ the comma */
+
+ while (*start_of_y && !apr_isdigit(*start_of_y)) {
+ start_of_y++; /* jump to the first digit, but not
+ past the end */
+ }
+
+ y_coord = strtod(start_of_y, &endptr);
+
+ if (endptr > start_of_y) {
+ return (y_coord);
+ }
+ }
+
+ return (-1); /* if no conversion was made, or
+ no comma was found in args */
+}
+
+
+/* See if string has a "quoted part", and if so set *quoted_part to
+ * the first character of the quoted part, then hammer a \0 onto the
+ * trailing quote, and set *string to point at the first character
+ * past the second quote.
+ *
+ * Otherwise set *quoted_part to NULL, and leave *string alone.
+ */
+static void read_quoted(char **string, char **quoted_part)
+{
+ char *strp = *string;
+
+ /* assume there's no quoted part */
+ *quoted_part = NULL;
+
+ while (apr_isspace(*strp)) {
+ strp++; /* go along string until non-whitespace */
+ }
+
+ if (*strp == '"') { /* if that character is a double quote */
+ strp++; /* step over it */
+ *quoted_part = strp; /* note where the quoted part begins */
+
+ while (*strp && *strp != '"') {
+ ++strp; /* skip the quoted portion */
+ }
+
+ *strp = '\0'; /* end the string with a NUL */
+
+ strp++; /* step over the last double quote */
+ *string = strp;
+ }
+}
+
+/*
+ * returns the mapped URL or NULL.
+ */
+static const char *imap_url(request_rec *r, const char *base, const char *value)
+{
+/* translates a value into a URL. */
+ apr_size_t slen, clen;
+ char *string_pos = NULL;
+ const char *string_pos_const = NULL;
+ char *directory = NULL;
+ const char *referer = NULL;
+ char *my_base;
+
+ if (!strcasecmp(value, "map") || !strcasecmp(value, "menu")) {
+ return ap_construct_url(r->pool, r->uri, r);
+ }
+
+ if (!strcasecmp(value, "nocontent") || !strcasecmp(value, "error")) {
+ return apr_pstrdup(r->pool, value); /* these are handled elsewhere,
+ so just copy them */
+ }
+
+ if (!strcasecmp(value, "referer")) {
+ referer = apr_table_get(r->headers_in, "Referer");
+ if (referer && *referer) {
+ return referer;
+ }
+ else {
+ /* XXX: This used to do *value = '\0'; ... which is totally bogus
+ * because it hammers the passed in value, which can be a string
+ * constant, or part of a config, or whatever. Total garbage.
+ * This works around that without changing the rest of this
+ * code much
+ */
+ value = ""; /* if 'referer' but no referring page,
+ null the value */
+ }
+ }
+
+ string_pos_const = value;
+ while (apr_isalpha(*string_pos_const)) {
+ string_pos_const++; /* go along the URL from the map
+ until a non-letter */
+ }
+ if (*string_pos_const == ':') {
+ /* if letters and then a colon (like http:) */
+ /* it's an absolute URL, so use it! */
+ return apr_pstrdup(r->pool, value);
+ }
+
+ if (!base || !*base) {
+ if (value && *value) {
+ return apr_pstrdup(r->pool, value); /* no base: use what is given */
+ }
+ /* no base, no value: pick a simple default */
+ return ap_construct_url(r->pool, "/", r);
+ }
+
+ /* must be a relative URL to be combined with base */
+ if (ap_strchr_c(base, '/') == NULL && (!strncmp(value, "../", 3)
+ || !strcmp(value, ".."))) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00677)
+ "invalid base directive in map file: %s", r->uri);
+ return NULL;
+ }
+ my_base = apr_pstrdup(r->pool, base);
+ string_pos = my_base;
+ while (*string_pos) {
+ if (*string_pos == '/' && *(string_pos + 1) == '/') {
+ string_pos += 2; /* if there are two slashes, jump over them */
+ continue;
+ }
+ if (*string_pos == '/') { /* the first single slash */
+ if (value[0] == '/') {
+ *string_pos = '\0';
+ } /* if the URL from the map starts from root,
+ end the base URL string at the first single
+ slash */
+ else {
+ directory = string_pos; /* save the start of
+ the directory portion */
+
+ string_pos = strrchr(string_pos, '/'); /* now reuse
+ string_pos */
+ string_pos++; /* step over that last slash */
+ *string_pos = '\0';
+ } /* but if the map url is relative, leave the
+ slash on the base (if there is one) */
+ break;
+ }
+ string_pos++; /* until we get to the end of my_base without
+ finding a slash by itself */
+ }
+
+ while (!strncmp(value, "../", 3) || !strcmp(value, "..")) {
+
+ if (directory && (slen = strlen(directory))) {
+
+ /* for each '..', knock a directory off the end
+ by ending the string right at the last slash.
+ But only consider the directory portion: don't eat
+ into the server name. And only try if a directory
+ portion was found */
+
+ clen = slen - 1;
+
+ while ((slen - clen) == 1) {
+
+ if ((string_pos = strrchr(directory, '/'))) {
+ *string_pos = '\0';
+ }
+ clen = strlen(directory);
+ if (clen == 0) {
+ break;
+ }
+ }
+
+ value += 2; /* jump over the '..' that we found in the
+ value */
+ }
+ else if (directory) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00678)
+ "invalid directory name in map file: %s", r->uri);
+ return NULL;
+ }
+
+ if (!strncmp(value, "/../", 4) || !strcmp(value, "/..")) {
+ value++; /* step over the '/' if there are more '..'
+ to do. This way, we leave the starting
+ '/' on value after the last '..', but get
+ rid of it otherwise */
+ }
+
+ } /* by this point, value does not start
+ with '..' */
+
+ if (value && *value) {
+ return apr_pstrcat(r->pool, my_base, value, NULL);
+ }
+ return my_base;
+}
+
+static int imap_reply(request_rec *r, const char *redirect)
+{
+ if (!strcasecmp(redirect, "error")) {
+ /* they actually requested an error! */
+ return HTTP_INTERNAL_SERVER_ERROR;
+ }
+ if (!strcasecmp(redirect, "nocontent")) {
+ /* tell the client to keep the page it has */
+ return HTTP_NO_CONTENT;
+ }
+ if (redirect && *redirect) {
+ /* must be a URL, so redirect to it */
+ apr_table_setn(r->headers_out, "Location", redirect);
+ return HTTP_MOVED_TEMPORARILY;
+ }
+ return HTTP_INTERNAL_SERVER_ERROR;
+}
+
+static void menu_header(request_rec *r, char *menu)
+{
+ ap_set_content_type(r, "text/html; charset=ISO-8859-1");
+
+ ap_rvputs(r, DOCTYPE_HTML_3_2, "<html><head>\n<title>Menu for ",
+ ap_escape_html(r->pool, r->uri),
+ "</title>\n</head><body>\n", NULL);
+
+ if (!strcasecmp(menu, "formatted")) {
+ ap_rvputs(r, "<h1>Menu for ",
+ ap_escape_html(r->pool, r->uri),
+ "</h1>\n<hr />\n\n", NULL);
+ }
+}
+
+static void menu_blank(request_rec *r, char *menu)
+{
+ if (!strcasecmp(menu, "formatted")) {
+ ap_rputs("\n", r);
+ }
+ else if (!strcasecmp(menu, "semiformatted")) {
+ ap_rputs("<br />\n", r);
+ }
+ else if (!strcasecmp(menu, "unformatted")) {
+ ap_rputs("\n", r);
+ }
+}
+
+static void menu_comment(request_rec *r, char *menu, char *comment)
+{
+ /* comments are ignored in the 'formatted' form */
+ if (!strcasecmp(menu, "formatted")) {
+ ap_rputs("\n", r); /* print just a newline if 'formatted' */
+ }
+ else if (!strcasecmp(menu, "semiformatted") && *comment) {
+ ap_rvputs(r, comment, "\n", NULL);
+ }
+ else if (!strcasecmp(menu, "unformatted") && *comment) {
+ ap_rvputs(r, comment, "\n", NULL);
+ }
+}
+
+static void menu_default(request_rec *r, const char *menu, const char *href, const char *text)
+{
+ char *ehref, *etext;
+ if (!strcasecmp(href, "error") || !strcasecmp(href, "nocontent")) {
+ return; /* don't print such lines, these aren't
+ really href's */
+ }
+
+ ehref = ap_escape_uri(r->pool, href);
+ etext = ap_escape_html(r->pool, text);
+
+ if (!strcasecmp(menu, "formatted")) {
+ ap_rvputs(r, "<pre>(Default) <a href=\"", ehref, "\">", etext,
+ "</a></pre>\n", NULL);
+ }
+ else if (!strcasecmp(menu, "semiformatted")) {
+ ap_rvputs(r, "<pre>(Default) <a href=\"", ehref, "\">", etext,
+ "</a></pre>\n", NULL);
+ }
+ else if (!strcasecmp(menu, "unformatted")) {
+ ap_rvputs(r, "<a href=\"", ehref, "\">", etext, "</a>", NULL);
+ }
+}
+
+static void menu_directive(request_rec *r, const char *menu, const char *href, const char *text)
+{
+ char *ehref, *etext;
+ if (!strcasecmp(href, "error") || !strcasecmp(href, "nocontent")) {
+ return; /* don't print such lines, as this isn't
+ really an href */
+ }
+
+ ehref = ap_escape_uri(r->pool, href);
+ etext = ap_escape_html(r->pool, text);
+
+ if (!strcasecmp(menu, "formatted")) {
+ ap_rvputs(r, "<pre> <a href=\"", ehref, "\">", etext,
+ "</a></pre>\n", NULL);
+ }
+ else if (!strcasecmp(menu, "semiformatted")) {
+ ap_rvputs(r, "<pre> <a href=\"", ehref, "\">", etext,
+ "</a></pre>\n", NULL);
+ }
+ else if (!strcasecmp(menu, "unformatted")) {
+ ap_rvputs(r, "<a href=\"", ehref, "\">", etext, "</a>", NULL);
+ }
+}
+
+static void menu_footer(request_rec *r)
+{
+ ap_rputs("\n\n</body>\n</html>\n", r); /* finish the menu */
+}
+
+static int imap_handler_internal(request_rec *r)
+{
+ char input[MAX_STRING_LEN];
+ char *directive;
+ char *value;
+ char *href_text;
+ const char *base;
+ const char *redirect;
+ const char *mapdflt;
+ char *closest = NULL;
+ double closest_yet = -1;
+ apr_status_t status;
+
+ double testpoint[2];
+ double pointarray[MAXVERTS + 1][2];
+ int vertex;
+
+ char *string_pos;
+ int showmenu = 0;
+
+ imap_conf_rec *icr;
+
+ char *imap_menu;
+ char *imap_default;
+ char *imap_base;
+
+ ap_configfile_t *imap;
+
+ icr = ap_get_module_config(r->per_dir_config, &imagemap_module);
+
+ imap_menu = icr->imap_menu ? icr->imap_menu : IMAP_MENU_DEFAULT;
+ imap_default = icr->imap_default
+ ? icr->imap_default : IMAP_DEFAULT_DEFAULT;
+ imap_base = icr->imap_base ? icr->imap_base : IMAP_BASE_DEFAULT;
+
+ status = ap_pcfg_openfile(&imap, r->pool, r->filename);
+
+ if (status != APR_SUCCESS) {
+ return HTTP_NOT_FOUND;
+ }
+
+ base = imap_url(r, NULL, imap_base); /* set base according
+ to default */
+ if (!base) {
+ return HTTP_INTERNAL_SERVER_ERROR;
+ }
+ mapdflt = imap_url(r, NULL, imap_default); /* and default to
+ global default */
+ if (!mapdflt) {
+ return HTTP_INTERNAL_SERVER_ERROR;
+ }
+
+ testpoint[X] = get_x_coord(r->args);
+ testpoint[Y] = get_y_coord(r->args);
+
+ if ((testpoint[X] == -1 || testpoint[Y] == -1) ||
+ (testpoint[X] == 0 && testpoint[Y] == 0)) {
+ /* if either is -1 or if both are zero (new Lynx) */
+ /* we don't have valid coordinates */
+ testpoint[X] = -1;
+ testpoint[Y] = -1;
+ if (strncasecmp(imap_menu, "none", 2)) {
+ showmenu = 1; /* show the menu _unless_ ImapMenu is
+ 'none' or 'no' */
+ }
+ }
+
+ if (showmenu) { /* send start of imagemap menu if
+ we're going to */
+ menu_header(r, imap_menu);
+ }
+
+ while (!ap_cfg_getline(input, sizeof(input), imap)) {
+ if (!input[0]) {
+ if (showmenu) {
+ menu_blank(r, imap_menu);
+ }
+ continue;
+ }
+
+ if (input[0] == '#') {
+ if (showmenu) {
+ menu_comment(r, imap_menu, input + 1);
+ }
+ continue;
+ } /* blank lines and comments are ignored
+ if we aren't printing a menu */
+
+ /* find the first two space delimited fields, recall that
+ * ap_cfg_getline has removed leading/trailing whitespace.
+ *
+ * note that we're tokenizing as we go... if we were to use the
+ * ap_getword() class of functions we would end up allocating extra
+ * memory for every line of the map file
+ */
+ string_pos = input;
+ if (!*string_pos) { /* need at least two fields */
+ goto need_2_fields;
+ }
+
+ directive = string_pos;
+ while (*string_pos && !apr_isspace(*string_pos)) { /* past directive */
+ ++string_pos;
+ }
+ if (!*string_pos) { /* need at least two fields */
+ goto need_2_fields;
+ }
+ *string_pos++ = '\0';
+
+ if (!*string_pos) { /* need at least two fields */
+ goto need_2_fields;
+ }
+ while (apr_isspace(*string_pos)) { /* past whitespace */
+ ++string_pos;
+ }
+
+ value = string_pos;
+ while (*string_pos && !apr_isspace(*string_pos)) { /* past value */
+ ++string_pos;
+ }
+ if (apr_isspace(*string_pos)) {
+ *string_pos++ = '\0';
+ }
+ else {
+ /* end of input, don't advance past it */
+ *string_pos = '\0';
+ }
+
+ if (!strncasecmp(directive, "base", 4)) { /* base, base_uri */
+ base = imap_url(r, NULL, value);
+ if (!base) {
+ goto menu_bail;
+ }
+ continue; /* base is never printed to a menu */
+ }
+
+ read_quoted(&string_pos, &href_text);
+
+ if (!strcasecmp(directive, "default")) { /* default */
+ mapdflt = imap_url(r, NULL, value);
+ if (!mapdflt) {
+ goto menu_bail;
+ }
+ if (showmenu) { /* print the default if there's a menu */
+ redirect = imap_url(r, base, mapdflt);
+ if (!redirect) {
+ goto menu_bail;
+ }
+ menu_default(r, imap_menu, redirect,
+ href_text ? href_text : mapdflt);
+ }
+ continue;
+ }
+
+ vertex = 0;
+ while (vertex < MAXVERTS &&
+ sscanf(string_pos, "%lf%*[, ]%lf",
+ &pointarray[vertex][X], &pointarray[vertex][Y]) == 2) {
+ /* Now skip what we just read... we can't use ANSIism %n */
+ while (apr_isspace(*string_pos)) { /* past whitespace */
+ string_pos++;
+ }
+ while (apr_isdigit(*string_pos)) { /* and the 1st number */
+ string_pos++;
+ }
+ string_pos++; /* skip the ',' */
+ while (apr_isspace(*string_pos)) { /* past any more whitespace */
+ string_pos++;
+ }
+ while (apr_isdigit(*string_pos)) { /* 2nd number */
+ string_pos++;
+ }
+ vertex++;
+ } /* so long as there are more vertices to
+ read, and we have room, read them in.
+ We start where we left off of the last
+ sscanf, not at the beginning. */
+
+ pointarray[vertex][X] = -1; /* signals the end of vertices */
+
+ if (showmenu) {
+ if (!href_text) {
+ read_quoted(&string_pos, &href_text); /* href text could
+ be here instead */
+ }
+ redirect = imap_url(r, base, value);
+ if (!redirect) {
+ goto menu_bail;
+ }
+ menu_directive(r, imap_menu, redirect,
+ href_text ? href_text : value);
+ continue;
+ }
+ /* note that we don't make it past here if we are making a menu */
+
+ if (testpoint[X] == -1 || pointarray[0][X] == -1) {
+ continue; /* don't try the following tests if testpoints
+ are invalid, or if there are no
+ coordinates */
+ }
+
+ if (!strcasecmp(directive, "poly")) { /* poly */
+
+ if (pointinpoly(testpoint, pointarray)) {
+ ap_cfg_closefile(imap);
+ redirect = imap_url(r, base, value);
+ if (!redirect) {
+ return HTTP_INTERNAL_SERVER_ERROR;
+ }
+ return (imap_reply(r, redirect));
+ }
+ continue;
+ }
+
+ if (!strcasecmp(directive, "circle")) { /* circle */
+
+ if (pointincircle(testpoint, pointarray)) {
+ ap_cfg_closefile(imap);
+ redirect = imap_url(r, base, value);
+ if (!redirect) {
+ return HTTP_INTERNAL_SERVER_ERROR;
+ }
+ return (imap_reply(r, redirect));
+ }
+ continue;
+ }
+
+ if (!strcasecmp(directive, "rect")) { /* rect */
+
+ if (pointinrect(testpoint, pointarray)) {
+ ap_cfg_closefile(imap);
+ redirect = imap_url(r, base, value);
+ if (!redirect) {
+ return HTTP_INTERNAL_SERVER_ERROR;
+ }
+ return (imap_reply(r, redirect));
+ }
+ continue;
+ }
+
+ if (!strcasecmp(directive, "point")) { /* point */
+
+ if (is_closer(testpoint, pointarray, &closest_yet)) {
+ closest = apr_pstrdup(r->pool, value);
+ }
+
+ continue;
+ } /* move on to next line whether it's
+ closest or not */
+
+ } /* nothing matched, so we get another line! */
+
+ ap_cfg_closefile(imap); /* we are done with the map file; close it */
+
+ if (showmenu) {
+ menu_footer(r); /* finish the menu and we are done */
+ return OK;
+ }
+
+ if (closest) { /* if a 'point' directive has been seen */
+ redirect = imap_url(r, base, closest);
+ if (!redirect) {
+ return HTTP_INTERNAL_SERVER_ERROR;
+ }
+ return (imap_reply(r, redirect));
+ }
+
+ if (mapdflt) { /* a default should be defined, even if
+ only 'nocontent' */
+ redirect = imap_url(r, base, mapdflt);
+ if (!redirect) {
+ return HTTP_INTERNAL_SERVER_ERROR;
+ }
+ return (imap_reply(r, redirect));
+ }
+
+ return HTTP_INTERNAL_SERVER_ERROR; /* If we make it this far,
+ we failed. They lose! */
+
+need_2_fields:
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00679)
+ "map file %s, line %d syntax error: requires at "
+ "least two fields", r->uri, imap->line_number);
+ /* fall through */
+menu_bail:
+ ap_cfg_closefile(imap);
+ if (showmenu) {
+ /* There's not much else we can do ... we've already sent the headers
+ * to the client.
+ */
+ ap_rputs("\n\n[an internal server error occured]\n", r);
+ menu_footer(r);
+ return OK;
+ }
+ return HTTP_INTERNAL_SERVER_ERROR;
+}
+
+static int imap_handler(request_rec *r)
+{
+ /* Optimization: skip the allocation of large local variables on the
+ * stack (in imap_handler_internal()) on requests that aren't using
+ * imagemaps
+ */
+ if (r->method_number != M_GET || (strcmp(r->handler,IMAP_MAGIC_TYPE)
+ && strcmp(r->handler, "imap-file"))) {
+ return DECLINED;
+ }
+ else {
+ return imap_handler_internal(r);
+ }
+}
+
+static void register_hooks(apr_pool_t *p)
+{
+ ap_hook_handler(imap_handler,NULL,NULL,APR_HOOK_MIDDLE);
+}
+
+AP_DECLARE_MODULE(imagemap) =
+{
+ STANDARD20_MODULE_STUFF,
+ create_imap_dir_config, /* dir config creater */
+ merge_imap_dir_configs, /* dir merger --- default is to override */
+ NULL, /* server config */
+ NULL, /* merge server config */
+ imap_cmds, /* command apr_table_t */
+ register_hooks /* register hooks */
+};
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-04 03:14:05 +0000