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/*
** mod_index_rss.c
*/
#include "httpd.h"
#include "http_config.h"
#include "http_protocol.h"
#include "http_log.h"
#include "fnmatch.h"
#include "ap_config.h"
#define TIME_FORMAT "%a %b %d %H:%M:%S %Y"
/* This is the XML header file */
#define HEADER "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n\n\
<!DOCTYPE rss PUBLIC \"-//Netscape Communications//DTD RSS 0.91//EN\"\n\
\"http://www.scripting.com/dtd/rss-0_91.dtd\">\n\n\
<rss version=\"0.91\">\n\n\
<channel>\n"
#define FOOTER "</channel>\n</rss>\n"
#define WATCHPOINT printf("WATCHPOINT %s %d\n", __FILE__, __LINE__);
module MODULE_VAR_EXPORT index_rss_module;
typedef struct {
int state;
array_header *enabled;
array_header *disabled;
} index_rss_conf;
typedef struct {
time_t time;
char *name;
} Container;
static void * mconfig_for_directory(pool *p, char *dir) {
index_rss_conf *cfg = ap_pcalloc (p, sizeof (index_rss_conf));
cfg->state = 1;
cfg->enabled = NULL;
cfg->disabled = NULL;
return (void *) cfg;
}
void print_channel(request_rec *r) {
char *time_string = NULL;
time_string = ap_pstrdup(r->pool, ap_ht_time(r->pool, r->finfo.st_mtime, TIME_FORMAT, 0));
ap_rprintf(r, "<title>%s:%s</title>\n", r->hostname, r->uri);
ap_rprintf(r, "<description>mod_index_rss channel maker</description>\n");
ap_rprintf(r, "<pubDate>%s</pubDate>\n", time_string);
ap_rprintf(r, "<lastBuildDate>%s</lastBuildDate>\n", time_string);
ap_rprintf(r, "<webMaster>%s</webMaster>\n", r->server->server_admin);
ap_rprintf(r, "<link>http://%s%s</link>\n\n", r->hostname, r->uri);
}
static int sort_container(Container *file1, Container *file2) {
if (file1->time == file2->time)
return 0;
if (file1->time < file2->time)
return -1;
return 1;
}
static string_find(array_header *array, const char *key) {
int x = 0;
char **strings = NULL;
if(!array)
return 0;
if(!key)
return 0;
strings = (char **) array->elts;
for (x = 0; x < array->nelts; ++x) {
if (!ap_fnmatch(strings[x], key, FNM_CASE_BLIND)) {
return 1;
}
}
return 0;
}
static int index_rss_fixup(request_rec *r) {
if(!r->content_type || !r->args)
return DECLINED;
if(!strcmp(r->content_type, "httpd/unix-directory")) {
if(!strcmp(r->args, "index=rss")) {
r->handler = "index_rss";
}
}
return DECLINED;
}
static int index_rss_handler(request_rec *r) {
DIR *directory = NULL;
struct DIR_TYPE *file = NULL;
struct stat sbuf;
char *filename = NULL;
Container *container = NULL;
Container **containers = NULL;
array_header *containers_array = NULL;
int x = 0;
int state = 0;
index_rss_conf *cfg = ap_get_module_config (r->per_dir_config, &index_rss_module);
containers_array = ap_make_array(r->pool, 15, sizeof (Container *));
if (!(directory = ap_popendir(r->pool, r->filename))) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, r,
"Can't open directory for index: %s", r->filename);
return HTTP_FORBIDDEN;
}
r->content_type = "text/xml";
ap_send_http_header(r);
if (r->header_only) {
ap_pclosedir(r->pool, directory);
return OK;
}
ap_rputs(HEADER, r);
print_channel(r);
while(file = readdir(directory)) {
state = 0;
if(stat(filename = ap_pstrcat(r->pool, r->filename, "/", file->d_name, NULL), &sbuf) == 0){
if(S_ISREG(sbuf.st_mode)) {
if(cfg->enabled || cfg->disabled) {
/* If enabled is used, we default to trusting nothing */
if(cfg->enabled)
state++;
if (string_find(cfg->enabled, file->d_name))
state = 0;
if (string_find(cfg->disabled, file->d_name))
state++;
}
if(!state) {
container = ap_pcalloc(r->pool, sizeof(Container));
container->time = sbuf.st_mtime;
container->name = ap_pstrdup (r->pool, file->d_name);
*(Container **) ap_push_array (containers_array) = (Container *)container;
}
}
}
}
containers = (Container **) containers_array->elts;
qsort(containers, containers_array->nelts, sizeof(Container *),
(int (*)(const void *, const void *)) sort_container);
for(x = 0; x < containers_array->nelts; x++) {
ap_rputs("<item>\n", r);
ap_rprintf(r, "<title>%s</title>\n", ap_escape_html(r->pool, containers[x]->name));
ap_rprintf(r, "<link>http://%s%s%s</link>\n", r->hostname, r->uri, ap_escape_html(r->pool, containers[x]->name));
ap_rputs("</item>\n", r);
ap_rputs("\n", r);
}
/* So now we have a bunch of stuff in memory, lets sort */
ap_rputs(FOOTER, r);
return OK;
}
static const char * add_enabled(cmd_parms * cmd, void *mconfig, char *string) {
FILE *file_ptr;
index_rss_conf *cfg = (index_rss_conf *) mconfig;
if(cfg->enabled == NULL)
cfg->enabled = ap_make_array (cmd->pool, 1, sizeof (char *));
*(char **) ap_push_array (cfg->enabled) = ap_pstrdup (cmd->pool, string);
return NULL;
}
static const char * add_disabled(cmd_parms * cmd, void *mconfig, char *string) {
FILE *file_ptr;
index_rss_conf *cfg = (index_rss_conf *) mconfig;
if(cfg->disabled == NULL)
cfg->disabled = ap_make_array (cmd->pool, 1, sizeof (char *));
*(char **) ap_push_array (cfg->disabled) = ap_pstrdup (cmd->pool, string);
return NULL;
}
/* Dispatch list of content handlers */
static const handler_rec index_rss_handlers[] = {
{ "index_rss", index_rss_handler },
{ NULL, NULL }
};
static const command_rec index_rss_module_cmds[] = {
{"IndexRSSEngine", ap_set_flag_slot,
(void *) XtOffsetOf(index_rss_conf, state), OR_ALL, FLAG,
"Use this to turn on and off RSS indexes (OFF by default)."},
{"IndexRSSEnabled", add_enabled, NULL, OR_ALL, TAKE1,
"A regular expression to compare against files (happens first)."},
{"IndexRSSDisabled", add_disabled, NULL, OR_ALL, TAKE1,
"A regular expression to compare against files (happens after enabled)."},
{NULL},
};
/* Dispatch list for API hooks */
module MODULE_VAR_EXPORT index_rss_module = {
STANDARD_MODULE_STUFF,
NULL, /* module initializer */
mconfig_for_directory, /* create per-dir config structures */
NULL, /* merge per-dir config structures */
NULL, /* create per-server config structures */
NULL, /* merge per-server config structures */
index_rss_module_cmds, /* table of config file commands */
index_rss_handlers, /* [#8] MIME-typed-dispatched handlers */
NULL, /* [#1] URI to filename translation */
NULL, /* [#4] validate user id from request */
NULL, /* [#5] check if the user is ok _here_ */
NULL, /* [#3] check access by host address */
NULL, /* [#6] determine MIME type */
index_rss_fixup, /* [#7] pre-run fixups */
NULL, /* [#9] log a transaction */
NULL, /* [#2] header parser */
NULL, /* child_init */
NULL, /* child_exit */
NULL /* [#0] post read-request */
};
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