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dirtree.h
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/* * ProFTPD - FTP server daemon * Copyright (c) 1997, 1998 Public Flood Software * Copyright (c) 1999, 2000 MacGyver aka Habeeb J. Dihu <macgyver@tos.net> * Copyright (c) 2001-2011 The ProFTPD Project team * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * 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., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA. * * As a special exemption, Public Flood Software/MacGyver aka Habeeb J. Dihu * and other respective copyright holders give permission to link this program * with OpenSSL, and distribute the resulting executable, without including * the source code for OpenSSL in the source distribution. */ /* Configuration structure, server, command and associated prototypes. * $Id: dirtree.h,v 1.81 2011/05/23 20:35:35 castaglia Exp $ */ #ifndef PR_DIRTREE_H #define PR_DIRTREE_H #include "pool.h" #include "sets.h" #include "table.h" typedef struct config_struc config_rec; struct conn_struc; typedef struct server_struc { struct server_struc *next, *prev; pool *pool; /* Memory pool for this server */ xaset_t *set; /* Set holding all servers */ /* The label/name for this server configuration. */ const char *ServerName; /* The address for this server configuration. */ const char *ServerAddress; /* The fully qualified domain name for this server configuration. */ const char *ServerFQDN; /* Port number to which to listen. A value of zero disables the server_rec. */ unsigned int ServerPort; /* TCP settings: max segment size, receive/send buffer sizes. */ int tcp_mss_len; /* If the tcp_rcvbuf_override/tcp_sndbuf_override flags are true, then * the corresponding buffer lengths are to be configured as socket options * via setsockopt(2). */ int tcp_rcvbuf_len; unsigned char tcp_rcvbuf_override; int tcp_sndbuf_len; unsigned char tcp_sndbuf_override; /* Administrator name */ char *ServerAdmin; /* Internal address of this server */ pr_netaddr_t *addr; /* The listener for this server. Note that this listener, and that * pointed to by ipbind->ib_listener (where ipbind->ib_server points to * this server_rec) are the same. Ideally, we'd only want one pointer to * the listener around, and avoid the duplication. To do this would * require further structural changes. */ struct conn_struc *listen; /* Configuration details */ xaset_t *conf; int config_type; /* Internal server ID, automatically assigned */ unsigned int sid; } server_rec; typedef struct cmd_struc { pool *pool; server_rec *server; config_rec *config; pool *tmp_pool; /* Temporary pool which only exists * while the cmd's handler is running */ int argc; char *arg; /* entire argument (excluding command) */ char **argv; char *group; /* Command grouping */ int class; /* The command class */ int stash_index; /* hack to speed up symbol hashing in modules.c */ pr_table_t *notes; /* Private data for passing/retaining between handlers */ int cmd_id; /* Index into commands list, for faster comparisons */ } cmd_rec; struct config_struc { struct config_struc *next,*prev; int config_type; unsigned int config_id; pool *pool; /* memory pool for this object */ xaset_t *set; /* The set we are stored in */ char *name; int argc; void **argv; long flags; /* Flags */ server_rec *server; /* Server this config element is attached to */ config_rec *parent; /* Our parent configuration record */ xaset_t *subset; /* Sub-configuration */ }; #define CONF_ROOT (1 << 0) /* No conf record */ #define CONF_DIR (1 << 1) /* Per-Dir configuration */ #define CONF_ANON (1 << 2) /* Anon. FTP configuration */ #define CONF_LIMIT (1 << 3) /* Limits commands available */ #define CONF_VIRTUAL (1 << 4) /* Virtual host */ #define CONF_DYNDIR (1 << 5) /* .ftpaccess file */ #define CONF_GLOBAL (1 << 6) /* "Global" context (applies to main server and ALL virtualhosts */ #define CONF_CLASS (1 << 7) /* Class context */ #define CONF_NAMED (1 << 8) /* Named virtual host */ #define CONF_USERDATA (1 << 14) /* Runtime user data */ #define CONF_PARAM (1 << 15) /* config/args pair */ /* config_rec flags */ #define CF_MERGEDOWN (1 << 0) /* Merge option down */ #define CF_MERGEDOWN_MULTI (1 << 1) /* Merge down, allowing multiple instances */ #define CF_DYNAMIC (1 << 2) /* Dynamically added entry */ #define CF_DEFER (1 << 3) /* Defer hashing until authentication */ #define CF_SILENT (1 << 4) /* Do not print a config dump when merging */ #define CF_MULTI (1 << 5) /* Allow multiple instances, but do not merge down */ /* Operation codes for dir_* funcs */ #define OP_HIDE 1 /* Op for hiding dirs/files */ #define OP_COMMAND 2 /* Command operation */ /* For the Order directive */ #define ORDER_ALLOWDENY 0 #define ORDER_DENYALLOW 1 /* The following macro determines the "highest" level available for * configuration directives. If a current dir_config is available, it's * subset is used, otherwise anon config or main server */ #define CURRENT_CONF (session.dir_config ? session.dir_config->subset \ : (session.anon_config ? session.anon_config->subset \ : main_server->conf)) #define TOPLEVEL_CONF (session.anon_config ? session.anon_config->subset : main_server->conf) extern server_rec *main_server; extern int tcpBackLog; extern int SocketBindTight; extern char ServerType; extern int ServerMaxInstances; extern int ServerUseReverseDNS; /* These macros are used to help handle configuration in modules */ #define CONF_ERROR(x, s) return PR_ERROR_MSG((x),NULL,pstrcat((x)->tmp_pool, \ (x)->argv[0],": ",(s),NULL)); #define CHECK_ARGS(x, n) if((x)->argc-1 < n) \ CONF_ERROR(x,"missing arguments") #define CHECK_VARARGS(x, n, m) if((x)->argc - 1 < n || (x)->argc - 1 > m) \ CONF_ERROR(x,"missing arguments") #define CHECK_HASARGS(x, n) ((x)->argc - 1) == n #define CHECK_CONF(x,p) if (!check_context((x),(p))) \ CONF_ERROR((x), \ pstrcat((x)->tmp_pool,"directive not allowed in ", \ get_context_name((x)), \ " context",NULL)) #define CHECK_CMD_ARGS(x, n) \ if ((x)->argc != (n)) { \ pr_response_add_err(R_501, _("Invalid number of arguments")); \ return PR_ERROR((x)); \ } #define CHECK_CMD_MIN_ARGS(x, n) \ if ((x)->argc < (n)) { \ pr_response_add_err(R_501, _("Invalid number of arguments")); \ return PR_ERROR((x)); \ } /* Prototypes */ /* KLUDGE: disable umask() for not G_WRITE operations. Config/ * Directory walking code will be completely redesigned in 1.3, * this is only necessary for perfomance reasons in 1.1/1.2 */ void kludge_disable_umask(void); void kludge_enable_umask(void); int pr_define_add(const char *, int); unsigned char pr_define_exists(const char *); void init_config(void); int fixup_servers(xaset_t *list); int parse_config_path(pool *, const char *); config_rec *add_config_set(xaset_t **, const char *); config_rec *add_config(server_rec *, const char *); config_rec *add_config_param(const char *, int, ...); config_rec *add_config_param_str(const char *, int, ...); config_rec *add_config_param_set(xaset_t **, const char *, int, ...); config_rec *pr_conf_add_server_config_param_str(server_rec *, const char *, int, ...); config_rec *find_config_next(config_rec *, config_rec *, int, const char *, int); config_rec *find_config(xaset_t *, int, const char *, int); void find_config_set_top(config_rec *); int remove_config(xaset_t *, const char *, int); /* Returns the assigned ID for the provided directive name, or zero * if no ID mapping was found. */ unsigned int pr_config_get_id(const char *name); /* Returns the buffer size to use for data transfers, regardless of IO * direction. */ int pr_config_get_xfer_bufsz(void); /* Returns the buffer size to use for data transfers given an IO direction * (either PR_NETIO_IO_RD for reads/uploads, or PR_NETIO_IO_WR for * writes/downloads). */ int pr_config_get_xfer_bufsz2(int); /* Returns the buffer size to use for data transfers given an IO direction * (either PR_NETIO_IO_RD for reads/uploads, or PR_NETIO_IO_WR for * writes/downloads). This takes into account any server-specific buffer * sizes, e.g. as configured via SocketOptions. */ int pr_config_get_server_xfer_bufsz(int); /* Assigns a unique ID for the given configuration directive. The * mapping of directive to ID is stored in a lookup table, so that * searching of the config database by directive name can be done using * ID comparisons rather than string comparisons. * * Returns the ID assigned for the given directive, or zero if there was an * error. */ unsigned int pr_config_set_id(const char *name); void *get_param_ptr(xaset_t *, const char *, int); void *get_param_ptr_next(const char *, int); xaset_t *get_dir_ctxt(pool *, char *); config_rec *dir_match_path(pool *, char *); void build_dyn_config(pool *, const char *, struct stat *, unsigned char); unsigned char dir_hide_file(const char *); int dir_check_full(pool *, cmd_rec *, const char *, const char *, int *); int dir_check_limits(cmd_rec *, config_rec *, const char *, int); int dir_check(pool *, cmd_rec *, const char *, const char *, int *); int dir_check_canon(pool *, cmd_rec *, const char *, const char *, int *); int is_dotdir(const char *); int login_check_limits(xaset_t *, int, int, int *); char *path_subst_uservar(pool *, char **); void resolve_anonymous_dirs(xaset_t *); void resolve_deferred_dirs(server_rec *); void fixup_dirs(server_rec *, int); unsigned char check_context(cmd_rec *, int); char *get_context_name(cmd_rec *); int get_boolean(cmd_rec *, int); char *get_full_cmd(cmd_rec *); void pr_config_dump(void (*)(const char *, ...), xaset_t *, char *); #ifdef PR_USE_DEVEL void pr_dirs_dump(void (*)(const char *, ...), xaset_t *, char *); #endif /* PR_USE_DEVEL */ #endif /* PR_DIRTREE_H */