Readded unfindes Boa 0.94.14rc21

[project/luci.git] / libs / sgi-webuci / boa-patches / 200-plugin_api.patch

Index: boa-0.94.14rc21/src/list.h
===================================================================
--- /dev/null   1970-01-01 00:00:00.000000000 +0000
+++ boa-0.94.14rc21/src/list.h  2008-06-11 10:25:04.000000000 +0200
@@ -0,0 +1,601 @@
+#ifndef _LINUX_LIST_H
+#define _LINUX_LIST_H
+
+#include <stddef.h>
+/**
+ * container_of - cast a member of a structure out to the containing structure
+ * @ptr:       the pointer to the member.
+ * @type:      the type of the container struct this is embedded in.
+ * @member:    the name of the member within the struct.
+ *
+ */
+#ifndef container_of
+#define container_of(ptr, type, member) (                      \
+       (type *)( (char *)ptr - offsetof(type,member) ))
+#endif
+
+
+/*
+ * Simple doubly linked list implementation.
+ *
+ * Some of the internal functions ("__xxx") are useful when
+ * manipulating whole lists rather than single entries, as
+ * sometimes we already know the next/prev entries and we can
+ * generate better code by using them directly rather than
+ * using the generic single-entry routines.
+ */
+
+struct list_head {
+       struct list_head *next, *prev;
+};
+
+#define LIST_HEAD_INIT(name) { &(name), &(name) }
+
+#define LIST_HEAD(name) \
+       struct list_head name = LIST_HEAD_INIT(name)
+
+static inline void INIT_LIST_HEAD(struct list_head *list)
+{
+       list->next = list;
+       list->prev = list;
+}
+
+/*
+ * Insert a new entry between two known consecutive entries.
+ *
+ * This is only for internal list manipulation where we know
+ * the prev/next entries already!
+ */
+static inline void __list_add(struct list_head *new,
+                             struct list_head *prev,
+                             struct list_head *next)
+{
+       next->prev = new;
+       new->next = next;
+       new->prev = prev;
+       prev->next = new;
+}
+
+/**
+ * list_add - add a new entry
+ * @new: new entry to be added
+ * @head: list head to add it after
+ *
+ * Insert a new entry after the specified head.
+ * This is good for implementing stacks.
+ */
+static inline void list_add(struct list_head *new, struct list_head *head)
+{
+       __list_add(new, head, head->next);
+}
+
+
+/**
+ * list_add_tail - add a new entry
+ * @new: new entry to be added
+ * @head: list head to add it before
+ *
+ * Insert a new entry before the specified head.
+ * This is useful for implementing queues.
+ */
+static inline void list_add_tail(struct list_head *new, struct list_head *head)
+{
+       __list_add(new, head->prev, head);
+}
+
+
+/*
+ * Delete a list entry by making the prev/next entries
+ * point to each other.
+ *
+ * This is only for internal list manipulation where we know
+ * the prev/next entries already!
+ */
+static inline void __list_del(struct list_head * prev, struct list_head * next)
+{
+       next->prev = prev;
+       prev->next = next;
+}
+
+/**
+ * list_del - deletes entry from list.
+ * @entry: the element to delete from the list.
+ * Note: list_empty() on entry does not return true after this, the entry is
+ * in an undefined state.
+ */
+static inline void list_del(struct list_head *entry)
+{
+       __list_del(entry->prev, entry->next);
+       entry->next = NULL;
+       entry->prev = NULL;
+}
+
+/**
+ * list_replace - replace old entry by new one
+ * @old : the element to be replaced
+ * @new : the new element to insert
+ *
+ * If @old was empty, it will be overwritten.
+ */
+static inline void list_replace(struct list_head *old,
+                               struct list_head *new)
+{
+       new->next = old->next;
+       new->next->prev = new;
+       new->prev = old->prev;
+       new->prev->next = new;
+}
+
+static inline void list_replace_init(struct list_head *old,
+                                       struct list_head *new)
+{
+       list_replace(old, new);
+       INIT_LIST_HEAD(old);
+}
+
+/**
+ * list_del_init - deletes entry from list and reinitialize it.
+ * @entry: the element to delete from the list.
+ */
+static inline void list_del_init(struct list_head *entry)
+{
+       __list_del(entry->prev, entry->next);
+       INIT_LIST_HEAD(entry);
+}
+
+/**
+ * list_move - delete from one list and add as another's head
+ * @list: the entry to move
+ * @head: the head that will precede our entry
+ */
+static inline void list_move(struct list_head *list, struct list_head *head)
+{
+       __list_del(list->prev, list->next);
+       list_add(list, head);
+}
+
+/**
+ * list_move_tail - delete from one list and add as another's tail
+ * @list: the entry to move
+ * @head: the head that will follow our entry
+ */
+static inline void list_move_tail(struct list_head *list,
+                                 struct list_head *head)
+{
+       __list_del(list->prev, list->next);
+       list_add_tail(list, head);
+}
+
+/**
+ * list_is_last - tests whether @list is the last entry in list @head
+ * @list: the entry to test
+ * @head: the head of the list
+ */
+static inline int list_is_last(const struct list_head *list,
+                               const struct list_head *head)
+{
+       return list->next == head;
+}
+
+/**
+ * list_empty - tests whether a list is empty
+ * @head: the list to test.
+ */
+static inline int list_empty(const struct list_head *head)
+{
+       return head->next == head;
+}
+
+/**
+ * list_empty_careful - tests whether a list is empty and not being modified
+ * @head: the list to test
+ *
+ * Description:
+ * tests whether a list is empty _and_ checks that no other CPU might be
+ * in the process of modifying either member (next or prev)
+ *
+ * NOTE: using list_empty_careful() without synchronization
+ * can only be safe if the only activity that can happen
+ * to the list entry is list_del_init(). Eg. it cannot be used
+ * if another CPU could re-list_add() it.
+ */
+static inline int list_empty_careful(const struct list_head *head)
+{
+       struct list_head *next = head->next;
+       return (next == head) && (next == head->prev);
+}
+
+static inline void __list_splice(struct list_head *list,
+                                struct list_head *head)
+{
+       struct list_head *first = list->next;
+       struct list_head *last = list->prev;
+       struct list_head *at = head->next;
+
+       first->prev = head;
+       head->next = first;
+
+       last->next = at;
+       at->prev = last;
+}
+
+/**
+ * list_splice - join two lists
+ * @list: the new list to add.
+ * @head: the place to add it in the first list.
+ */
+static inline void list_splice(struct list_head *list, struct list_head *head)
+{
+       if (!list_empty(list))
+               __list_splice(list, head);
+}
+
+/**
+ * list_splice_init - join two lists and reinitialise the emptied list.
+ * @list: the new list to add.
+ * @head: the place to add it in the first list.
+ *
+ * The list at @list is reinitialised
+ */
+static inline void list_splice_init(struct list_head *list,
+                                   struct list_head *head)
+{
+       if (!list_empty(list)) {
+               __list_splice(list, head);
+               INIT_LIST_HEAD(list);
+       }
+}
+
+/**
+ * list_entry - get the struct for this entry
+ * @ptr:       the &struct list_head pointer.
+ * @type:      the type of the struct this is embedded in.
+ * @member:    the name of the list_struct within the struct.
+ */
+#define list_entry(ptr, type, member) \
+       container_of(ptr, type, member)
+
+/**
+ * list_first_entry - get the first element from a list
+ * @ptr:       the list head to take the element from.
+ * @type:      the type of the struct this is embedded in.
+ * @member:    the name of the list_struct within the struct.
+ *
+ * Note, that list is expected to be not empty.
+ */
+#define list_first_entry(ptr, type, member) \
+       list_entry((ptr)->next, type, member)
+
+/**
+ * list_for_each       -       iterate over a list
+ * @pos:       the &struct list_head to use as a loop cursor.
+ * @head:      the head for your list.
+ */
+#define list_for_each(pos, head) \
+       for (pos = (head)->next; pos != (head); \
+               pos = pos->next)
+
+/**
+ * __list_for_each     -       iterate over a list
+ * @pos:       the &struct list_head to use as a loop cursor.
+ * @head:      the head for your list.
+ *
+ * This variant differs from list_for_each() in that it's the
+ * simplest possible list iteration code, no prefetching is done.
+ * Use this for code that knows the list to be very short (empty
+ * or 1 entry) most of the time.
+ */
+#define __list_for_each(pos, head) \
+       for (pos = (head)->next; pos != (head); pos = pos->next)
+
+/**
+ * list_for_each_prev  -       iterate over a list backwards
+ * @pos:       the &struct list_head to use as a loop cursor.
+ * @head:      the head for your list.
+ */
+#define list_for_each_prev(pos, head) \
+       for (pos = (head)->prev; pos != (head); \
+               pos = pos->prev)
+
+/**
+ * list_for_each_safe - iterate over a list safe against removal of list entry
+ * @pos:       the &struct list_head to use as a loop cursor.
+ * @n:         another &struct list_head to use as temporary storage
+ * @head:      the head for your list.
+ */
+#define list_for_each_safe(pos, n, head) \
+       for (pos = (head)->next, n = pos->next; pos != (head); \
+               pos = n, n = pos->next)
+
+/**
+ * list_for_each_prev_safe - iterate over a list backwards safe against removal of list entry
+ * @pos:       the &struct list_head to use as a loop cursor.
+ * @n:         another &struct list_head to use as temporary storage
+ * @head:      the head for your list.
+ */
+#define list_for_each_prev_safe(pos, n, head) \
+       for (pos = (head)->prev, n = pos->prev; \
+            pos != (head); \
+            pos = n, n = pos->prev)
+
+/**
+ * list_for_each_entry -       iterate over list of given type
+ * @pos:       the type * to use as a loop cursor.
+ * @head:      the head for your list.
+ * @member:    the name of the list_struct within the struct.
+ */
+#define list_for_each_entry(pos, head, member)                         \
+       for (pos = list_entry((head)->next, typeof(*pos), member);      \
+            &pos->member != (head);    \
+            pos = list_entry(pos->member.next, typeof(*pos), member))
+
+/**
+ * list_for_each_entry_reverse - iterate backwards over list of given type.
+ * @pos:       the type * to use as a loop cursor.
+ * @head:      the head for your list.
+ * @member:    the name of the list_struct within the struct.
+ */
+#define list_for_each_entry_reverse(pos, head, member)                 \
+       for (pos = list_entry((head)->prev, typeof(*pos), member);      \
+            &pos->member != (head);    \
+            pos = list_entry(pos->member.prev, typeof(*pos), member))
+
+/**
+ * list_prepare_entry - prepare a pos entry for use in list_for_each_entry_continue()
+ * @pos:       the type * to use as a start point
+ * @head:      the head of the list
+ * @member:    the name of the list_struct within the struct.
+ *
+ * Prepares a pos entry for use as a start point in list_for_each_entry_continue().
+ */
+#define list_prepare_entry(pos, head, member) \
+       ((pos) ? : list_entry(head, typeof(*pos), member))
+
+/**
+ * list_for_each_entry_continue - continue iteration over list of given type
+ * @pos:       the type * to use as a loop cursor.
+ * @head:      the head for your list.
+ * @member:    the name of the list_struct within the struct.
+ *
+ * Continue to iterate over list of given type, continuing after
+ * the current position.
+ */
+#define list_for_each_entry_continue(pos, head, member)                \
+       for (pos = list_entry(pos->member.next, typeof(*pos), member);  \
+            &pos->member != (head);    \
+            pos = list_entry(pos->member.next, typeof(*pos), member))
+
+/**
+ * list_for_each_entry_continue_reverse - iterate backwards from the given point
+ * @pos:       the type * to use as a loop cursor.
+ * @head:      the head for your list.
+ * @member:    the name of the list_struct within the struct.
+ *
+ * Start to iterate over list of given type backwards, continuing after
+ * the current position.
+ */
+#define list_for_each_entry_continue_reverse(pos, head, member)                \
+       for (pos = list_entry(pos->member.prev, typeof(*pos), member);  \
+            &pos->member != (head);    \
+            pos = list_entry(pos->member.prev, typeof(*pos), member))
+
+/**
+ * list_for_each_entry_from - iterate over list of given type from the current point
+ * @pos:       the type * to use as a loop cursor.
+ * @head:      the head for your list.
+ * @member:    the name of the list_struct within the struct.
+ *
+ * Iterate over list of given type, continuing from current position.
+ */
+#define list_for_each_entry_from(pos, head, member)                    \
+       for (; &pos->member != (head);  \
+            pos = list_entry(pos->member.next, typeof(*pos), member))
+
+/**
+ * list_for_each_entry_safe - iterate over list of given type safe against removal of list entry
+ * @pos:       the type * to use as a loop cursor.
+ * @n:         another type * to use as temporary storage
+ * @head:      the head for your list.
+ * @member:    the name of the list_struct within the struct.
+ */
+#define list_for_each_entry_safe(pos, n, head, member)                 \
+       for (pos = list_entry((head)->next, typeof(*pos), member),      \
+               n = list_entry(pos->member.next, typeof(*pos), member); \
+            &pos->member != (head);                                    \
+            pos = n, n = list_entry(n->member.next, typeof(*n), member))
+
+/**
+ * list_for_each_entry_safe_continue
+ * @pos:       the type * to use as a loop cursor.
+ * @n:         another type * to use as temporary storage
+ * @head:      the head for your list.
+ * @member:    the name of the list_struct within the struct.
+ *
+ * Iterate over list of given type, continuing after current point,
+ * safe against removal of list entry.
+ */
+#define list_for_each_entry_safe_continue(pos, n, head, member)                \
+       for (pos = list_entry(pos->member.next, typeof(*pos), member),          \
+               n = list_entry(pos->member.next, typeof(*pos), member);         \
+            &pos->member != (head);                                            \
+            pos = n, n = list_entry(n->member.next, typeof(*n), member))
+
+/**
+ * list_for_each_entry_safe_from
+ * @pos:       the type * to use as a loop cursor.
+ * @n:         another type * to use as temporary storage
+ * @head:      the head for your list.
+ * @member:    the name of the list_struct within the struct.
+ *
+ * Iterate over list of given type from current point, safe against
+ * removal of list entry.
+ */
+#define list_for_each_entry_safe_from(pos, n, head, member)                    \
+       for (n = list_entry(pos->member.next, typeof(*pos), member);            \
+            &pos->member != (head);                                            \
+            pos = n, n = list_entry(n->member.next, typeof(*n), member))
+
+/**
+ * list_for_each_entry_safe_reverse
+ * @pos:       the type * to use as a loop cursor.
+ * @n:         another type * to use as temporary storage
+ * @head:      the head for your list.
+ * @member:    the name of the list_struct within the struct.
+ *
+ * Iterate backwards over list of given type, safe against removal
+ * of list entry.
+ */
+#define list_for_each_entry_safe_reverse(pos, n, head, member)         \
+       for (pos = list_entry((head)->prev, typeof(*pos), member),      \
+               n = list_entry(pos->member.prev, typeof(*pos), member); \
+            &pos->member != (head);                                    \
+            pos = n, n = list_entry(n->member.prev, typeof(*n), member))
+
+/*
+ * Double linked lists with a single pointer list head.
+ * Mostly useful for hash tables where the two pointer list head is
+ * too wasteful.
+ * You lose the ability to access the tail in O(1).
+ */
+
+struct hlist_head {
+       struct hlist_node *first;
+};
+
+struct hlist_node {
+       struct hlist_node *next, **pprev;
+};
+
+#define HLIST_HEAD_INIT { .first = NULL }
+#define HLIST_HEAD(name) struct hlist_head name = {  .first = NULL }
+#define INIT_HLIST_HEAD(ptr) ((ptr)->first = NULL)
+static inline void INIT_HLIST_NODE(struct hlist_node *h)
+{
+       h->next = NULL;
+       h->pprev = NULL;
+}
+
+static inline int hlist_unhashed(const struct hlist_node *h)
+{
+       return !h->pprev;
+}
+
+static inline int hlist_empty(const struct hlist_head *h)
+{
+       return !h->first;
+}
+
+static inline void __hlist_del(struct hlist_node *n)
+{
+       struct hlist_node *next = n->next;
+       struct hlist_node **pprev = n->pprev;
+       *pprev = next;
+       if (next)
+               next->pprev = pprev;
+}
+
+static inline void hlist_del(struct hlist_node *n)
+{
+       __hlist_del(n);
+       n->next = NULL;
+       n->pprev = NULL;
+}
+
+static inline void hlist_del_init(struct hlist_node *n)
+{
+       if (!hlist_unhashed(n)) {
+               __hlist_del(n);
+               INIT_HLIST_NODE(n);
+       }
+}
+
+
+static inline void hlist_add_head(struct hlist_node *n, struct hlist_head *h)
+{
+       struct hlist_node *first = h->first;
+       n->next = first;
+       if (first)
+               first->pprev = &n->next;
+       h->first = n;
+       n->pprev = &h->first;
+}
+
+
+/* next must be != NULL */
+static inline void hlist_add_before(struct hlist_node *n,
+                                       struct hlist_node *next)
+{
+       n->pprev = next->pprev;
+       n->next = next;
+       next->pprev = &n->next;
+       *(n->pprev) = n;
+}
+
+static inline void hlist_add_after(struct hlist_node *n,
+                                       struct hlist_node *next)
+{
+       next->next = n->next;
+       n->next = next;
+       next->pprev = &n->next;
+
+       if(next->next)
+               next->next->pprev  = &next->next;
+}
+
+#define hlist_entry(ptr, type, member) container_of(ptr,type,member)
+
+#define hlist_for_each(pos, head) \
+       for (pos = (head)->first; pos; pos = pos->next)
+
+#define hlist_for_each_safe(pos, n, head) \
+       for (pos = (head)->first; pos; pos = n)
+
+/**
+ * hlist_for_each_entry        - iterate over list of given type
+ * @tpos:      the type * to use as a loop cursor.
+ * @pos:       the &struct hlist_node to use as a loop cursor.
+ * @head:      the head for your list.
+ * @member:    the name of the hlist_node within the struct.
+ */
+#define hlist_for_each_entry(tpos, pos, head, member)                   \
+       for (pos = (head)->first; pos &&                                 \
+               ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \
+            pos = pos->next)
+
+/**
+ * hlist_for_each_entry_continue - iterate over a hlist continuing after current point
+ * @tpos:      the type * to use as a loop cursor.
+ * @pos:       the &struct hlist_node to use as a loop cursor.
+ * @member:    the name of the hlist_node within the struct.
+ */
+#define hlist_for_each_entry_continue(tpos, pos, member)               \
+       for (pos = (pos)->next; pos &&                                  \
+            ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;});   \
+            pos = pos->next)
+
+/**
+ * hlist_for_each_entry_from - iterate over a hlist continuing from current point
+ * @tpos:      the type * to use as a loop cursor.
+ * @pos:       the &struct hlist_node to use as a loop cursor.
+ * @member:    the name of the hlist_node within the struct.
+ */
+#define hlist_for_each_entry_from(tpos, pos, member)                    \
+       for (; pos &&                    \
+               ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \
+            pos = pos->next)
+
+/**
+ * hlist_for_each_entry_safe - iterate over list of given type safe against removal of list entry
+ * @tpos:      the type * to use as a loop cursor.
+ * @pos:       the &struct hlist_node to use as a loop cursor.
+ * @n:         another &struct hlist_node to use as temporary storage
+ * @head:      the head for your list.
+ * @member:    the name of the hlist_node within the struct.
+ */
+#define hlist_for_each_entry_safe(tpos, pos, n, head, member)           \
+       for (pos = (head)->first;                                        \
+            pos && ({ n = pos->next; 1; }) &&                           \
+               ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \
+            pos = n)
+
+#endif
Index: boa-0.94.14rc21/src/plugin.c
===================================================================
--- /dev/null   1970-01-01 00:00:00.000000000 +0000
+++ boa-0.94.14rc21/src/plugin.c        2008-06-11 10:25:04.000000000 +0200
@@ -0,0 +1,198 @@
+/*
+ * Simple plugin API for boa
+ * Copyright (C) 2008 John Crispin <blogic@openwrt.org>
+ * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "boa.h"
+#include "list.h"
+#include <dlfcn.h>
+#include <glob.h>
+
+static LIST_HEAD(plugins);
+
+struct httpd_plugin *plugin_lookup(request *req)
+{
+       struct list_head *l;
+       list_for_each(l, &plugins)
+       {
+               struct httpd_plugin *p =
+                       container_of(l, struct httpd_plugin, list);
+
+               if (!strncmp(req->request_uri, p->prefix, strlen(p->prefix)))
+                       return p;
+       }
+       return NULL;
+}
+
+static int plugin_run(request *req, struct httpd_plugin *p)
+{
+       struct http_context ctx;
+    int child_pid;
+
+       SQUASH_KA(req);
+
+       memset(&ctx, 0, sizeof(ctx));
+       ctx.uri = req->request_uri;
+       switch(req->method) {
+               case M_POST:
+                       ctx.request_method = "POST";
+                       break;
+               case M_HEAD:
+                       ctx.request_method = "HEAD";
+                       break;
+               case M_GET:
+                       ctx.request_method = "GET";
+                       break;
+       }
+       ctx.server_addr = req->local_ip_addr;
+       switch (req->http_version) {
+               case HTTP09:
+                       ctx.server_proto = "HTTP/0.9";
+                       break;
+               case HTTP10:
+                       ctx.server_proto = "HTTP/1.0";
+                       break;
+               case HTTP11:
+                       ctx.server_proto = "HTTP/1.1";
+                       break;
+       }
+       ctx.query_string = req->query_string;
+       ctx.remote_addr = req->remote_ip_addr;
+       ctx.remote_port = req->remote_port;
+       if (req->method == M_POST) {
+               if (req->content_type)
+                       ctx.content_type = req->content_type;
+               else
+                       ctx.content_type = default_type;
+               ctx.content_length = req->content_length;
+       }
+#ifdef ACCEPT_ON
+       if (req->accept[0])
+               ctx.http_accept = req->accept;
+#endif
+
+    p->prepare_req(p, &ctx);
+       child_pid = fork();
+
+       switch(child_pid) {
+    case -1:
+        log_error_doc(req);
+        perror("fork");
+        send_r_error(req);
+        return 0;
+
+       case 0:
+        if (dup2(req->fd, STDOUT_FILENO) == -1) {
+            log_error_doc(req);
+            perror("dup2 - fd");
+            _exit(1);
+        }
+        if (set_block_fd(req->fd) == -1) {
+            log_error_doc(req);
+            perror("cgi-fcntl");
+            _exit(1);
+        }
+        if (req->method == M_POST) {
+            dup2(req->read_data_fd, STDIN_FILENO);
+            close(req->read_data_fd);
+            close(req->post_data_fd);
+                       set_block_fd(STDIN_FILENO);
+        }
+
+        if (cgi_log_fd)
+            dup2(cgi_log_fd, STDERR_FILENO);
+
+           p->handle_req(p, &ctx);
+               exit(0);
+        break;
+    }
+
+    return 1;
+}
+
+int plugin_handle(request * req)
+{
+       struct httpd_plugin *p;
+
+       p = plugin_lookup(req);
+       if (!p)
+               return 0;
+
+       return plugin_run(req, p);
+}
+
+static void plugin_load(const char *p, const char *dir)
+{
+       struct httpd_plugin *plugin;
+       void *dl;
+
+       /* ignore directories */
+       if (p[strlen(p) - 1] == '/')
+               return;
+
+       dl = dlopen(p, RTLD_NOW);
+       if (!dl) {
+               fprintf(stderr, "Unable to load plugin '%s': %d\n", p, dlerror());
+               return;
+       }
+
+       plugin = dlsym(dl, "httpd_plugin");
+       if (!plugin)
+               goto error;
+
+       INIT_LIST_HEAD(&plugin->list);
+       plugin->dir = dir;
+
+       if (plugin->init(plugin) != 1)
+               goto error;
+
+       if (!plugin->prefix)
+               goto error_init;
+
+       list_add(&plugin->list, &plugins);
+       return;
+
+error_init:
+       plugin->done(plugin);
+error:
+       fprintf(stderr, "Plugin '%s' failed to initialize\n", p);
+       dlclose(dl);
+}
+
+#define WILDCARD_SUFFIX "/*.so"
+
+int plugin_init(char *path)
+{
+       int buflen = 128;
+       char *plugindir;
+       glob_t g;
+       char *s;
+       int i;
+
+       s = malloc(strlen(path) + sizeof(WILDCARD_SUFFIX) + 1);
+       strcpy(s, path);
+       strcat(s, WILDCARD_SUFFIX);
+       glob(s, GLOB_MARK, NULL, &g);
+       free(s);
+
+       for (i = 0; i < g.gl_pathc; i++)
+               plugin_load(g.gl_pathv[i], path);
+
+       globfree(&g);
+}
+
+
Index: boa-0.94.14rc21/src/request.c
===================================================================
--- boa-0.94.14rc21.orig/src/request.c  2005-02-22 15:11:29.000000000 +0100
+++ boa-0.94.14rc21/src/request.c       2008-06-11 10:25:04.000000000 +0200
@@ -59,6 +59,7 @@
         dequeue(&request_free, request_free); /* dequeue the head */
     } else {
         req = (request *) malloc(sizeof (request));
+               memset(req, 0, sizeof(request));
         if (!req) {
             log_error_time();
             perror("malloc for new request");
@@ -793,6 +794,8 @@
 
 int process_header_end(request * req)
 {
+       int ret;
+
     if (!req->logline) {
         log_error_doc(req);
         fputs("No logline in process_header_end\n", stderr);
@@ -855,19 +858,35 @@
     }
 
     if (req->method == M_POST) {
-        req->post_data_fd = create_temporary_file(1, NULL, 0);
+        if (!req->plugin) {
+            req->post_data_fd = create_temporary_file(1, NULL, 0);
+        } else {
+            int fd[2];
+            if (pipe(&fd[0]) != -1) {
+                req->post_data_fd = fd[1];
+                req->read_data_fd = fd[0];
+                set_nonblock_fd(req->post_data_fd);
+            }
+        }
         if (req->post_data_fd == 0) {
             /* errors already logged */
             send_r_error(req);
             return 0;
         }
-        if (fcntl(req->post_data_fd, F_SETFD, 1) == -1) {
-            boa_perror(req, "unable to set close-on-exec for req->post_data_fd!");
-            close(req->post_data_fd);
-            req->post_data_fd = 0;
-            return 0;
+        if (!req->plugin) {
+            if (fcntl(req->post_data_fd, F_SETFD, 1) == -1) {
+                boa_perror(req, "unable to set close-on-exec for req->post_data_fd!");
+                close(req->post_data_fd);
+                req->post_data_fd = 0;
+                return 0;
+            }
+            return(1); /* success */
         }
-        return 1;             /* success */
+    }
+
+    ret = plugin_handle(req);
+    if (ret) {
+        return ret;
     }
 
     if (req->cgi_type) {
Index: boa-0.94.14rc21/src/Makefile.in
===================================================================
--- boa-0.94.14rc21.orig/src/Makefile.in        2005-02-22 04:02:40.000000000 +0100
+++ boa-0.94.14rc21/src/Makefile.in     2008-06-11 10:25:04.000000000 +0200
@@ -15,7 +15,7 @@
 srcdir = @srcdir@
 VPATH = @srcdir@:@srcdir@/../extras
 LDFLAGS = @LDFLAGS@
-LIBS = @LIBS@
+LIBS = @LIBS@ -ldl
 CFLAGS = @CFLAGS@
 CPPFLAGS = @CPPFLAGS@ -I@srcdir@ -I.
 @ifGNUmake@DEPEND = .depend
@@ -26,6 +26,7 @@
 SOURCES = alias.c boa.c buffer.c cgi.c cgi_header.c config.c escape.c \
        get.c hash.c ip.c log.c mmap_cache.c pipe.c queue.c range.c \
        read.c request.c response.c signals.c util.c sublog.c \
+       plugin.c \
        @ASYNCIO_SOURCE@ @ACCESSCONTROL_SOURCE@
 
 OBJS = $(SOURCES:.c=.o) timestamp.o @STRUTIL@
Index: boa-0.94.14rc21/src/boa.h
===================================================================
--- boa-0.94.14rc21.orig/src/boa.h      2005-02-22 15:11:29.000000000 +0100
+++ boa-0.94.14rc21/src/boa.h   2008-06-11 10:25:04.000000000 +0200
@@ -38,6 +38,7 @@
 #include <fcntl.h>
 #include <limits.h>             /* OPEN_MAX */
 #include <setjmp.h>
+#include <stdbool.h>
 
 #include <netinet/in.h>
 
@@ -49,6 +50,7 @@
 #include "compat.h"             /* oh what fun is porting */
 #include "defines.h"
 #include "globals.h"
+#include "boa-plugin.h"
 
 /* alias */
 void add_alias(const char *fakename, const char *realname, enum ALIAS type);
@@ -225,5 +227,10 @@
 void range_pool_push(Range * r);
 int ranges_fixup(request * req);
 int range_parse(request * req, const char *str);
- 
+
+/* plugins */
+int plugin_init(char *path);
+int plugin_handle(request * req);
+struct httpd_plugin *plugin_lookup(request *req);
+
 #endif
Index: boa-0.94.14rc21/src/config.c
===================================================================
--- boa-0.94.14rc21.orig/src/config.c   2005-02-22 15:11:29.000000000 +0100
+++ boa-0.94.14rc21/src/config.c        2008-06-11 10:25:04.000000000 +0200
@@ -64,6 +64,7 @@
 char *error_log_name;
 char *access_log_name;
 char *cgi_log_name;
+char *plugin_root = NULL;
 
 int use_localtime;
 
@@ -165,6 +166,7 @@
     {"CGINice", S2A, c_set_int, &cgi_nice},
 #endif
     {"CGIEnv", S2A, c_add_cgi_env, NULL},
+    {"PluginRoot", S1A, c_set_string, &plugin_root},
 };
 
 static void c_add_cgi_env(char *v1, char *v2, void *t)
@@ -544,6 +546,22 @@
                 single_post_limit);
         exit(EXIT_FAILURE);
     }
+       if (plugin_root) {
+               char *plugin_path = plugin_root;
+               char *next;
+
+               do {
+                       next = strchr(plugin_path, ':');
+                       if (next) {
+                               *next = 0;
+                               next++;
+                       }
+
+                       plugin_init(plugin_path);
+                       plugin_path = next;
+               } while (plugin_path);
+               free(plugin_root);
+       }
 
     if (vhost_root && virtualhost) {
         fprintf(stderr, "Both VHostRoot and VirtualHost were enabled, and "
Index: boa-0.94.14rc21/src/alias.c
===================================================================
--- boa-0.94.14rc21.orig/src/alias.c    2005-02-22 15:11:29.000000000 +0100
+++ boa-0.94.14rc21/src/alias.c 2008-06-11 10:25:04.000000000 +0200
@@ -246,6 +246,7 @@
 
     uri_len = strlen(req->request_uri);
     current = find_alias(req->request_uri, uri_len);
+       req->plugin = !!plugin_lookup(req);
     if (current) {
         if (current->type == SCRIPTALIAS) /* Script */
             return init_script_alias(req, current, uri_len);
@@ -263,7 +264,7 @@
                uri_len - current->fake_len + 1);
 
         if (current->type == REDIRECT) { /* Redirect */
-            if (req->method == M_POST) { /* POST to non-script */
+            if ((req->method == M_POST) && !req->plugin) { /* POST to non-script */
                 /* it's not a cgi, but we try to POST??? */
                 log_error_doc(req);
                 fputs("POST to non-script is disallowed.\n", stderr);
@@ -432,7 +433,7 @@
         else
             req->cgi_type = CGI;
         return 1;
-    } else if (req->method == M_POST) { /* POST to non-script */
+    } else if ((req->method == M_POST) && !req->plugin) { /* POST to non-script */
         /* it's not a cgi, but we try to POST??? */
         log_error_doc(req);
         fputs("POST to non-script disallowed.\n", stderr);
Index: boa-0.94.14rc21/src/globals.h
===================================================================
--- boa-0.94.14rc21.orig/src/globals.h  2005-02-22 15:11:29.000000000 +0100
+++ boa-0.94.14rc21/src/globals.h       2008-06-11 10:25:04.000000000 +0200
@@ -158,6 +158,7 @@
     char *host;                 /* what we end up using for 'host', no matter the contents of header_host */
 
     int post_data_fd;           /* fd for post data tmpfile */
+    int read_data_fd;           /* fd for post data input (plugin) */
 
     char *path_info;            /* env variable */
     char *path_translated;      /* env variable */
@@ -193,6 +194,8 @@
     char accept[MAX_ACCEPT_LENGTH]; /* Accept: fields */
 #endif
 
+    bool plugin;
+
     struct request *next;       /* next */
     struct request *prev;       /* previous */
 };
Index: boa-0.94.14rc21/src/read.c
===================================================================
--- boa-0.94.14rc21.orig/src/read.c     2005-02-23 16:41:55.000000000 +0100
+++ boa-0.94.14rc21/src/read.c  2008-06-11 10:25:04.000000000 +0200
@@ -375,8 +375,11 @@
 
     if (bytes_to_write == 0) {  /* nothing left in buffer to write */
         req->header_line = req->header_end = req->buffer;
-        if (req->filepos >= req->filesize)
-            return init_cgi(req);
+        if (req->filepos >= req->filesize) {
+                       if (req->post_data_fd > 0)
+                               close(req->post_data_fd);
+               return init_cgi(req);
+               }
         /* if here, we can safely assume that there is more to read */
         req->status = BODY_READ;
         return 1;
Index: boa-0.94.14rc21/src/boa-plugin.h
===================================================================
--- /dev/null   1970-01-01 00:00:00.000000000 +0000
+++ boa-0.94.14rc21/src/boa-plugin.h    2008-06-11 10:25:04.000000000 +0200
@@ -0,0 +1,67 @@
+#ifndef _HTTPD_PLUGIN_H__
+#define _HTTPD_PLUGIN_H__
+
+#include "list.h"
+
+/*
+ * Definition for HTTP server plugins
+ *
+ * The context that the plugin is called with for
+ * a single http request. It gets allocated in the
+ * persistent context before prepare_req and freed
+ * there afterwards (still active in the forked
+ * context at handle_req time)
+ */
+struct http_context
+{
+       char *uri;
+       char *request_method;
+       char *server_addr;
+       char *server_proto;
+       char *query_string;
+       char *remote_addr;
+       unsigned int remote_port;
+       char *content_type;
+       char *content_length;
+       char *http_accept;
+
+       void *priv;
+};
+
+/*
+ * the main data structure of httpd plugins.
+ */
+struct httpd_plugin
+{
+       /* used by the web server */
+       struct list_head list;
+
+       /* only page requests matching 'prefix' are passed
+        * to prepare_req and handle_req */
+       const char *prefix;
+
+       /* directory that the plugin was found in */
+       const char *dir;
+
+       /* initialize the plugin, if the return value is nonzero,
+        * the plugin will not be used */
+       int (*init)(struct httpd_plugin *);
+
+       /* free all memory associated with the plugin */
+       void (*done)(struct httpd_plugin *);
+
+       /* prepare a page request. this is executed in the main context,
+        * so pay attention to memory usage. should not print any data
+        * to stdout */
+       int (*prepare_req)(struct httpd_plugin *, struct http_context *);
+
+       /* handle the request. can print output data to stdout */
+       int (*handle_req)(struct httpd_plugin *, struct http_context *);
+
+       /* pointer for private data structures of the plugin */
+       void *priv;
+};
+
+#define HTTPD_PLUGIN struct httpd_plugin httpd_plugin =
+
+#endif