SRC/DYNIP.C File Reference

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Detailed Description

Simple dynamic IP/hostname update client. Only updating using the DynDNS2 protocol is supported.

This code is based on the ddclient Perl-script by Paul Burry: http://members.rogers.com/ddclient/pub/ddclient.tar.gz

Definition in file DYNIP.C.

Go to the source code of this file.

Data Structures
struct	URL
Functions
int	get_url (const char *host, int port, const char *path, const char *user_pass)
	Fetch a single URL optionally with authentication.
const char *	parse_myip_address (const char *buf)
	Parse response buffer and find the first IP-address.
int	parse_dyndns_response (const char *buf)
	Parse the status response from DynDNS.
int	chkip_method (const char *value)
	Select method of getting your public IP (WAN-side) address.
int	dyndns_params (const char *value)
	Extracts the host, port and request from the value.
void	url_free (struct URL *url)
	Free the URL.
BOOL	url_parse (struct URL *res, const char *url)
	Simple URL parser; accepts only "http://" prefixes (optional).
void	dynip_config (const char *name, const char *value)
	Parser for DYNIP configuration.
void	dynip_exit (void)
	Free allocated memory.
void	dynip_init (void)
int	dynip_exec (void)
int	base64encode (const char *in, char *out, size_t out_len)
BOOL	get_header (void *sock, long *cont_len_ptr)
	Receive and parse the HYTTP header.
Variables
char	dyndns_user [MAX_VALUELEN+1] = ""
char	dyndns_passwd [MAX_VALUELEN+1] = ""
char	dyn_myhostname [MAX_VALUELEN+1] = ""
char	dyn_myip [20] = ""
BOOL	dynip_enable = FALSE
int	dyndns_refresh = 3600
int	trace_level = 0
char	config_file [MAX_PATHLEN+1] = "$(TEMP)\\W32DYNIP.TMP"
URL	dyndns
URL	chkip = { NULL, NULL, 0, FALSE }
char	resp_buf [2048]
void(*	prev_hook )(const char *, const char *)

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Function Documentation

int chkip_method (  const char *  value  )  [static]

Select method of getting your public IP (WAN-side) address. Either a dotted IPv4 address or an URL to return your address. Definition at line 366 of file DYNIP.C. References isaddr(), StrLcpy(), url_free(), and url_parse().

int dyndns_params (  const char *  value  )  [static]

Extracts the host, port and request from the value. Used for sending the DynDNS IP/host update. Definition at line 382 of file DYNIP.C. References url_free(), and url_parse().

void dynip_config (  const char *  name, const char *  value )  [static]

Parser for DYNIP configuration. Matches all "\c DYNIP.xx" values from WATTCP.CFG file and make appropriate actions. Definition at line 91 of file DYNIP.C. References ARG_ATOI, ARG_FUNC, ARG_STRCPY, chkip_method(), dyndns_params(), and parse_config_table().

BOOL get_header (  void *  sock, long *  cont_len_ptr )  [static]

Receive and parse the HYTTP header. Return FALSE if header isn't correct. Return TRUE and extract "Content-Length" field. Definition at line 475 of file DYNIP.C. References BYTE.

const char * parse_myip_address (  const char *  orig  )  [static]

Parse response buffer and find the first IP-address. 'buf' must be 0-terminated. Definition at line 213 of file DYNIP.C. References aton(), and StrLcpy().

BOOL url_parse (  struct URL *  res, const char *  url )  [static]

Simple URL parser; accepts only "http://" prefixes (optional). Extracts host, port and request parts ("/" if not present). Definition at line 297 of file DYNIP.C. References StrLcpy().

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Variable Documentation

struct URL dyndns [static]

Initial value: { (char*) "members.dyndns.com", (char*) "/nic/update?system=dyndns&hostname=%s", 80, FALSE } Definition at line 66 of file DYNIP.C.

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