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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-07 02:04:06 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-07 02:04:06 +0000 |
commit | 5dff2d61cc1c27747ee398e04d8e02843aabb1f8 (patch) | |
tree | a67c336b406c8227bac912beb74a1ad3cdc55100 /modules/mappers/mod_imagemap.c | |
parent | Initial commit. (diff) | |
download | apache2-upstream.tar.xz apache2-upstream.zip |
Adding upstream version 2.4.38.upstream/2.4.38upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | modules/mappers/mod_imagemap.c | 897 |
1 files changed, 897 insertions, 0 deletions
diff --git a/modules/mappers/mod_imagemap.c b/modules/mappers/mod_imagemap.c new file mode 100644 index 0000000..187a500 --- /dev/null +++ b/modules/mappers/mod_imagemap.c @@ -0,0 +1,897 @@ +/* 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. */ + int 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 */ +}; |