mirror of
https://github.com/transmission/transmission
synced 2024-12-25 17:17:31 +00:00
dcaf1f16ef
(shttpd) make shttpd_edit_passwords() a public function for now to fix the build.
395 lines
12 KiB
C
395 lines
12 KiB
C
/*
|
|
* Copyright (c) 2004-2005 Sergey Lyubka <valenok@gmail.com>
|
|
* All rights reserved
|
|
*
|
|
* "THE BEER-WARE LICENSE" (Revision 42):
|
|
* Sergey Lyubka wrote this file. As long as you retain this notice you
|
|
* can do whatever you want with this stuff. If we meet some day, and you think
|
|
* this stuff is worth it, you can buy me a beer in return.
|
|
*/
|
|
|
|
#ifndef DEFS_HEADER_DEFINED
|
|
#define DEFS_HEADER_DEFINED
|
|
|
|
#include "std_includes.h"
|
|
#include "llist.h"
|
|
#include "io.h"
|
|
#include "md5.h"
|
|
#include "config.h"
|
|
#include "shttpd.h"
|
|
|
|
#define NELEMS(ar) (sizeof(ar) / sizeof(ar[0]))
|
|
|
|
#ifdef _DEBUG
|
|
#define DBG(x) do { printf x ; putchar('\n'); fflush(stdout); } while (0)
|
|
#else
|
|
#define DBG(x)
|
|
#endif /* DEBUG */
|
|
|
|
/*
|
|
* Darwin prior to 7.0 and Win32 do not have socklen_t
|
|
*/
|
|
#ifdef NO_SOCKLEN_T
|
|
typedef int socklen_t;
|
|
#endif /* NO_SOCKLEN_T */
|
|
|
|
/*
|
|
* For parsing. This guy represents a substring.
|
|
*/
|
|
struct vec {
|
|
const char *ptr;
|
|
int len;
|
|
};
|
|
|
|
#if !defined(FALSE)
|
|
enum {FALSE, TRUE};
|
|
#endif /* !FALSE */
|
|
|
|
enum {METHOD_GET, METHOD_POST, METHOD_PUT, METHOD_DELETE, METHOD_HEAD};
|
|
enum {HDR_DATE, HDR_INT, HDR_STRING}; /* HTTP header types */
|
|
enum {E_FATAL = 1, E_LOG = 2}; /* Flags for elog() function */
|
|
typedef unsigned long big_int_t; /* Type for Content-Length */
|
|
|
|
/*
|
|
* Unified socket address
|
|
*/
|
|
struct usa {
|
|
socklen_t len;
|
|
union {
|
|
struct sockaddr sa;
|
|
struct sockaddr_in sin;
|
|
} u;
|
|
};
|
|
|
|
/*
|
|
* This thing is aimed to hold values of any type.
|
|
* Used to store parsed headers' values.
|
|
*/
|
|
union variant {
|
|
char *v_str;
|
|
int v_int;
|
|
big_int_t v_big_int;
|
|
time_t v_time;
|
|
void (*v_func)(void);
|
|
void *v_void;
|
|
struct vec v_vec;
|
|
};
|
|
|
|
/*
|
|
* This is used only in embedded configuration. This structure holds a
|
|
* registered URI, associated callback function with callback data.
|
|
* For non-embedded compilation shttpd_callback_t is not defined, so
|
|
* we use union variant to keep the compiler silent.
|
|
*/
|
|
struct registered_uri {
|
|
struct llhead link;
|
|
const char *uri;
|
|
union variant callback;
|
|
void *callback_data;
|
|
};
|
|
|
|
/*
|
|
* User may want to handle certain errors. This structure holds the
|
|
* handlers for corresponding error codes.
|
|
*/
|
|
struct error_handler {
|
|
struct llhead link;
|
|
int code;
|
|
union variant callback;
|
|
void *callback_data;
|
|
};
|
|
|
|
struct http_header {
|
|
int len; /* Header name length */
|
|
int type; /* Header type */
|
|
size_t offset; /* Value placeholder */
|
|
const char *name; /* Header name */
|
|
};
|
|
|
|
/*
|
|
* This guy holds parsed HTTP headers
|
|
*/
|
|
struct headers {
|
|
union variant cl; /* Content-Length: */
|
|
union variant ct; /* Content-Type: */
|
|
union variant connection; /* Connection: */
|
|
union variant ims; /* If-Modified-Since: */
|
|
union variant user; /* Remote user name */
|
|
union variant auth; /* Authorization */
|
|
union variant useragent; /* User-Agent: */
|
|
union variant referer; /* Referer: */
|
|
union variant cookie; /* Cookie: */
|
|
union variant location; /* Location: */
|
|
union variant range; /* Range: */
|
|
union variant status; /* Status: */
|
|
union variant transenc; /* Transfer-Encoding: */
|
|
};
|
|
|
|
/* Must go after union variant definition */
|
|
#include "ssl.h"
|
|
|
|
/*
|
|
* The communication channel
|
|
*/
|
|
union channel {
|
|
int fd; /* Regular static file */
|
|
int sock; /* Connected socket */
|
|
struct {
|
|
int sock; /* XXX important. must be first */
|
|
SSL *ssl; /* shttpd_poll() assumes that */
|
|
} ssl; /* SSL-ed socket */
|
|
struct {
|
|
DIR *dirp;
|
|
char *path;
|
|
} dir; /* Opened directory */
|
|
struct {
|
|
void *state; /* For keeping state */
|
|
union variant func; /* User callback function */
|
|
void *data; /* User defined parameters */
|
|
} emb; /* Embedded, user callback */
|
|
};
|
|
|
|
struct stream;
|
|
|
|
/*
|
|
* IO class descriptor (file, directory, socket, SSL, CGI, etc)
|
|
* These classes are defined in io_*.c files.
|
|
*/
|
|
struct io_class {
|
|
const char *name;
|
|
int (*read)(struct stream *, void *buf, size_t len);
|
|
int (*write)(struct stream *, const void *buf, size_t len);
|
|
void (*close)(struct stream *);
|
|
};
|
|
|
|
/*
|
|
* Data exchange stream. It is backed by some communication channel:
|
|
* opened file, socket, etc. The 'read' and 'write' methods are
|
|
* determined by a communication channel.
|
|
*/
|
|
struct stream {
|
|
struct conn *conn;
|
|
union channel chan; /* Descriptor */
|
|
struct io io; /* IO buffer */
|
|
const struct io_class *io_class; /* IO class */
|
|
int headers_len;
|
|
big_int_t content_len;
|
|
unsigned int flags;
|
|
#define FLAG_HEADERS_PARSED 1
|
|
#define FLAG_SSL_ACCEPTED 2
|
|
#define FLAG_R 4 /* Can read in general */
|
|
#define FLAG_W 8 /* Can write in general */
|
|
#define FLAG_CLOSED 16
|
|
#define FLAG_DONT_CLOSE 32
|
|
#define FLAG_ALWAYS_READY 64 /* File, dir, user_func */
|
|
#define FLAG_SUSPEND 128
|
|
};
|
|
|
|
struct worker {
|
|
struct llhead link;
|
|
int num_conns; /* Num of active connections */
|
|
int exit_flag; /* Ditto - exit flag */
|
|
int ctl[2]; /* Control socket pair */
|
|
struct shttpd_ctx *ctx; /* Context reference */
|
|
struct llhead connections; /* List of connections */
|
|
};
|
|
|
|
struct conn {
|
|
struct llhead link; /* Connections chain */
|
|
struct worker *worker; /* Worker this conn belongs to */
|
|
struct shttpd_ctx *ctx; /* Context this conn belongs to */
|
|
struct usa sa; /* Remote socket address */
|
|
time_t birth_time; /* Creation time */
|
|
time_t expire_time; /* Expiration time */
|
|
|
|
int loc_port; /* Local port */
|
|
int status; /* Reply status code */
|
|
int method; /* Request method */
|
|
char *uri; /* Decoded URI */
|
|
unsigned long major_version; /* Major HTTP version number */
|
|
unsigned long minor_version; /* Minor HTTP version number */
|
|
char *request; /* Request line */
|
|
char *headers; /* Request headers */
|
|
char *query; /* QUERY_STRING part of the URI */
|
|
char *path_info; /* PATH_INFO thing */
|
|
struct vec mime_type; /* Mime type */
|
|
|
|
struct headers ch; /* Parsed client headers */
|
|
|
|
struct stream loc; /* Local stream */
|
|
struct stream rem; /* Remote stream */
|
|
|
|
#if !defined(NO_SSI)
|
|
void *ssi; /* SSI descriptor */
|
|
#endif /* NO_SSI */
|
|
};
|
|
|
|
enum {
|
|
OPT_ROOT, OPT_INDEX_FILES, OPT_PORTS, OPT_DIR_LIST,
|
|
OPT_CGI_EXTENSIONS, OPT_CGI_INTERPRETER, OPT_CGI_ENVIRONMENT,
|
|
OPT_SSI_EXTENSIONS, OPT_AUTH_REALM, OPT_AUTH_GPASSWD,
|
|
OPT_AUTH_PUT, OPT_ACCESS_LOG, OPT_ERROR_LOG, OPT_MIME_TYPES,
|
|
OPT_SSL_CERTIFICATE, OPT_ALIASES, OPT_ACL, OPT_INETD, OPT_UID,
|
|
OPT_CFG_URI, OPT_PROTECT, OPT_SERVICE, OPT_HIDE, OPT_THREADS,
|
|
NUM_OPTIONS
|
|
};
|
|
|
|
/*
|
|
* SHTTPD context
|
|
*/
|
|
struct shttpd_ctx {
|
|
SSL_CTX *ssl_ctx; /* SSL context */
|
|
|
|
struct llhead registered_uris;/* User urls */
|
|
struct llhead error_handlers; /* Embedded error handlers */
|
|
struct llhead acl; /* Access control list */
|
|
struct llhead ssi_funcs; /* SSI callback functions */
|
|
struct llhead listeners; /* Listening sockets */
|
|
struct llhead workers; /* Worker workers */
|
|
|
|
FILE *access_log; /* Access log stream */
|
|
FILE *error_log; /* Error log stream */
|
|
|
|
char *options[NUM_OPTIONS]; /* Configurable options */
|
|
#if defined(__rtems__)
|
|
rtems_id mutex;
|
|
#endif /* _WIN32 */
|
|
};
|
|
|
|
struct listener {
|
|
struct llhead link;
|
|
struct shttpd_ctx *ctx; /* Context that socket belongs */
|
|
int sock; /* Listening socket */
|
|
int is_ssl; /* Should be SSL-ed */
|
|
};
|
|
|
|
/* Types of messages that could be sent over the control socket */
|
|
enum {CTL_PASS_SOCKET, CTL_WAKEUP};
|
|
|
|
/*
|
|
* In SHTTPD, list of values are represented as comma or space separated
|
|
* string. For example, list of CGI extensions can be represented as
|
|
* ".cgi,.php,.pl", or ".cgi .php .pl". The macro that follows allows to
|
|
* loop through the individual values in that list.
|
|
*
|
|
* A "const char *" pointer and size_t variable must be passed to the macro.
|
|
* Spaces or commas can be used as delimiters (macro DELIM_CHARS).
|
|
*
|
|
* In every iteration of the loop, "s" points to the current value, and
|
|
* "len" specifies its length. The code inside loop must not change
|
|
* "s" and "len" parameters.
|
|
*/
|
|
#define FOR_EACH_WORD_IN_LIST(s,len) \
|
|
for (; s != NULL && (len = strcspn(s, DELIM_CHARS)) != 0; \
|
|
s += len, s+= strspn(s, DELIM_CHARS))
|
|
|
|
/*
|
|
* IPv4 ACL entry. Specifies subnet with deny/allow flag
|
|
*/
|
|
struct acl {
|
|
struct llhead link;
|
|
uint32_t ip; /* IP, in network byte order */
|
|
uint32_t mask; /* Also in network byte order */
|
|
int flag; /* Either '+' or '-' */
|
|
};
|
|
|
|
/*
|
|
* shttpd.c
|
|
*/
|
|
extern time_t _shttpd_current_time; /* Current UTC time */
|
|
extern int _shttpd_tz_offset; /* Offset from GMT time zone */
|
|
extern const struct vec _shttpd_known_http_methods[];
|
|
|
|
extern void _shttpd_stop_stream(struct stream *stream);
|
|
extern int _shttpd_url_decode(const char *, int, char *dst, int);
|
|
extern void _shttpd_send_server_error(struct conn *, int, const char *);
|
|
extern int _shttpd_get_headers_len(const char *buf, size_t buflen);
|
|
extern void _shttpd_parse_headers(const char *s, int, struct headers *);
|
|
extern int _shttpd_is_true(const char *str);
|
|
extern int _shttpd_socketpair(int pair[2]);
|
|
extern void _shttpd_get_mime_type(struct shttpd_ctx *,
|
|
const char *, int, struct vec *);
|
|
|
|
#define IS_TRUE(ctx, opt) _shttpd_is_true((ctx)->options[opt])
|
|
|
|
/*
|
|
* config.c
|
|
*/
|
|
extern void _shttpd_usage(const char *prog);
|
|
|
|
/*
|
|
* log.c
|
|
*/
|
|
extern void _shttpd_elog(int flags, struct conn *c, const char *fmt, ...);
|
|
extern void _shttpd_log_access(FILE *fp, const struct conn *c);
|
|
|
|
/*
|
|
* string.c
|
|
*/
|
|
extern void _shttpd_strlcpy(register char *, register const char *, size_t);
|
|
extern int _shttpd_strncasecmp(register const char *,
|
|
register const char *, size_t);
|
|
extern char *_shttpd_strndup(const char *ptr, size_t len);
|
|
extern char *_shttpd_strdup(const char *str);
|
|
extern int _shttpd_snprintf(char *buf, size_t len, const char *fmt, ...);
|
|
extern int _shttpd_match_extension(const char *path, const char *ext_list);
|
|
|
|
/*
|
|
* compat_*.c
|
|
*/
|
|
extern void _shttpd_set_close_on_exec(int fd);
|
|
extern int _shttpd_set_non_blocking_mode(int fd);
|
|
extern int _shttpd_stat(const char *, struct stat *stp);
|
|
extern int _shttpd_open(const char *, int flags, int mode);
|
|
extern int _shttpd_remove(const char *);
|
|
extern int _shttpd_rename(const char *, const char *);
|
|
extern int _shttpd_mkdir(const char *, int);
|
|
extern char * _shttpd_getcwd(char *, int);
|
|
extern int _shttpd_spawn_process(struct conn *c, const char *prog,
|
|
char *envblk, char *envp[], int sock, const char *dir);
|
|
|
|
extern int _shttpd_set_nt_service(struct shttpd_ctx *, const char *);
|
|
extern int _shttpd_set_systray(struct shttpd_ctx *, const char *);
|
|
extern void _shttpd_try_to_run_as_nt_service(void);
|
|
|
|
/*
|
|
* io_*.c
|
|
*/
|
|
extern const struct io_class _shttpd_io_file;
|
|
extern const struct io_class _shttpd_io_socket;
|
|
extern const struct io_class _shttpd_io_ssl;
|
|
extern const struct io_class _shttpd_io_cgi;
|
|
extern const struct io_class _shttpd_io_dir;
|
|
extern const struct io_class _shttpd_io_embedded;
|
|
extern const struct io_class _shttpd_io_ssi;
|
|
|
|
extern int _shttpd_put_dir(const char *path);
|
|
extern void _shttpd_get_dir(struct conn *c);
|
|
extern void _shttpd_get_file(struct conn *c, struct stat *stp);
|
|
extern void _shttpd_ssl_handshake(struct stream *stream);
|
|
extern void _shttpd_setup_embedded_stream(struct conn *,
|
|
union variant, void *);
|
|
extern struct registered_uri *_shttpd_is_registered_uri(struct shttpd_ctx *,
|
|
const char *uri);
|
|
extern void _shttpd_do_ssi(struct conn *);
|
|
extern void _shttpd_ssi_func_destructor(struct llhead *lp);
|
|
|
|
/*
|
|
* auth.c
|
|
*/
|
|
extern int _shttpd_check_authorization(struct conn *c, const char *path);
|
|
extern int _shttpd_is_authorized_for_put(struct conn *c);
|
|
extern void _shttpd_send_authorization_request(struct conn *c);
|
|
extern int shttpd_edit_passwords(const char *fname, const char *domain,
|
|
const char *user, const char *pass);
|
|
|
|
/*
|
|
* cgi.c
|
|
*/
|
|
extern int _shttpd_run_cgi(struct conn *c, const char *prog);
|
|
extern void _shttpd_do_cgi(struct conn *c);
|
|
|
|
#define CGI_REPLY "HTTP/1.1 OK\r\n"
|
|
#define CGI_REPLY_LEN (sizeof(CGI_REPLY) - 1)
|
|
|
|
#endif /* DEFS_HEADER_DEFINED */
|