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r15216@tombo: nickm | 2008-04-17 13:55:05 -0400

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Add new thread-safe interfaces to evdns functions. Needs review.


svn:r714
This commit is contained in:
Nick Mathewson 2008-04-17 17:55:35 +00:00
parent fc41ffde4d
commit e688a88a82
3 changed files with 462 additions and 262 deletions
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1
ChangeLog
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@ -66,6 +66,7 @@ Changes in current version:
o Don't warn on unimplemented epoll_create(): this isn't a problem, just a reason to fall back to poll or select.
o Correctly handle timeouts larger than 35 minutes on Linux with epoll.c. This is probably a kernel defect, but we'll have to support old kernels anyway even if it gets fixed.
o Make name_from_addr() threadsafe in http.c
o Add new thread-safe interfaces to evdns functions.
Changes in 1.4.0:
o allow \r or \n individually to separate HTTP headers instead of the standard "\r\n"; from Charles Kerr.

695
evdns.c
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File diff suppressed because it is too large Load Diff

28
evdns.h
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@ -165,7 +165,7 @@ extern "C" {
#endif
/* For integer types. */
#include <evutil.h>
#include <event2/util.h>
/** Error codes 0-5 are as described in RFC 1035. */
#define DNS_ERR_NONE 0
@ -210,6 +210,9 @@ extern "C" {
*/
typedef void (*evdns_callback_type) (int result, char type, int count, int ttl, void *addresses, void *arg);
struct evdns_base;
struct event_base;
/**
Initialize the asynchronous DNS library.
@ -221,6 +224,7 @@ typedef void (*evdns_callback_type) (int result, char type, int count, int ttl,
@see evdns_shutdown()
*/
int evdns_init(void);
struct evdns_base * evdns_base_new(struct event_base *event_base, int initialize_nameservers);
/**
@ -235,6 +239,7 @@ int evdns_init(void);
@see evdns_init()
*/
void evdns_shutdown(int fail_requests);
void evdns_base_free(struct evdns_base *base, int fail_requests);
/**
@ -257,7 +262,8 @@ const char *evdns_err_to_string(int err);
@see evdns_nameserver_ip_add()
*/
int evdns_nameserver_add(unsigned long int address);
int evdns_base_nameserver_add(struct evdns_base *base,
unsigned long int address);
/**
Get the number of configured nameservers.
@ -272,6 +278,8 @@ int evdns_nameserver_add(unsigned long int address);
*/
int evdns_count_nameservers(void);
int evdns_base_count_nameservers(struct evdns_base *base);
/**
Remove all configured nameservers, and suspend all pending resolves.
@ -282,6 +290,7 @@ int evdns_count_nameservers(void);
@see evdns_resume()
*/
int evdns_clear_nameservers_and_suspend(void);
int evdns_base_clear_nameservers_and_suspend(struct evdns_base *base);
/**
@ -294,7 +303,7 @@ int evdns_clear_nameservers_and_suspend(void);
@see evdns_clear_nameservers_and_suspend()
*/
int evdns_resume(void);
int evdns_base_resume(struct evdns_base *base);
/**
Add a nameserver.
@ -306,6 +315,8 @@ int evdns_resume(void);
@see evdns_nameserver_add()
*/
int evdns_nameserver_ip_add(const char *ip_as_string);
int evdns_base_nameserver_ip_add(struct evdns_base *base,
const char *ip_as_string);
/**
@ -319,7 +330,7 @@ int evdns_nameserver_ip_add(const char *ip_as_string);
@see evdns_resolve_ipv6(), evdns_resolve_reverse(), evdns_resolve_reverse_ipv6()
*/
int evdns_resolve_ipv4(const char *name, int flags, evdns_callback_type callback, void *ptr);
int evdns_base_resolve_ipv4(struct evdns_base *base, const char *name, int flags, evdns_callback_type callback, void *ptr);
/**
Lookup an AAAA record for a given name.
@ -332,6 +343,7 @@ int evdns_resolve_ipv4(const char *name, int flags, evdns_callback_type callback
@see evdns_resolve_ipv4(), evdns_resolve_reverse(), evdns_resolve_reverse_ipv6()
*/
int evdns_resolve_ipv6(const char *name, int flags, evdns_callback_type callback, void *ptr);
int evdns_base_resolve_ipv6(struct evdns_base *base, const char *name, int flags, evdns_callback_type callback, void *ptr);
struct in_addr;
struct in6_addr;
@ -347,6 +359,7 @@ struct in6_addr;
@see evdns_resolve_reverse_ipv6()
*/
int evdns_resolve_reverse(struct in_addr *in, int flags, evdns_callback_type callback, void *ptr);
int evdns_base_resolve_reverse(struct evdns_base *base, struct in_addr *in, int flags, evdns_callback_type callback, void *ptr);
/**
@ -360,6 +373,7 @@ int evdns_resolve_reverse(struct in_addr *in, int flags, evdns_callback_type cal
@see evdns_resolve_reverse_ipv6()
*/
int evdns_resolve_reverse_ipv6(struct in6_addr *in, int flags, evdns_callback_type callback, void *ptr);
int evdns_base_resolve_reverse_ipv6(struct evdns_base *base, struct in6_addr *in, int flags, evdns_callback_type callback, void *ptr);
/**
@ -375,6 +389,7 @@ int evdns_resolve_reverse_ipv6(struct in6_addr *in, int flags, evdns_callback_ty
@return 0 if successful, or -1 if an error occurred
*/
int evdns_set_option(const char *option, const char *val, int flags);
int evdns_base_set_option(struct evdns_base *base, const char *option, const char *val, int flags);
/**
@ -399,6 +414,7 @@ int evdns_set_option(const char *option, const char *val, int flags);
@see resolv.conf(3), evdns_config_windows_nameservers()
*/
int evdns_resolv_conf_parse(int flags, const char *const filename);
int evdns_base_resolv_conf_parse(struct evdns_base *base, int flags, const char *const filename);
/**
@ -420,6 +436,7 @@ int evdns_config_windows_nameservers(void);
Clear the list of search domains.
*/
void evdns_search_clear(void);
void evdns_base_search_clear(struct evdns_base *base);
/**
@ -428,6 +445,7 @@ void evdns_search_clear(void);
@param domain the domain to be added to the search list
*/
void evdns_search_add(const char *domain);
void evdns_base_search_add(struct evdns_base *base, const char *domain);
/**
@ -439,6 +457,7 @@ void evdns_search_add(const char *domain);
@param ndots the new ndots parameter
*/
void evdns_search_ndots_set(const int ndots);
void evdns_base_search_ndots_set(struct evdns_base *base, const int ndots);
/**
A callback that is invoked when a log message is generated
@ -508,6 +527,7 @@ typedef void (*evdns_request_callback_fn_type)(struct evdns_server_request *, vo
#define EVDNS_CLASS_INET 1
struct evdns_server_port *evdns_add_server_port(int socket, int is_tcp, evdns_request_callback_fn_type callback, void *user_data);
struct evdns_server_port *evdns_add_server_port_with_base(struct event_base *base, int socket, int is_tcp, evdns_request_callback_fn_type callback, void *user_data);
void evdns_close_server_port(struct evdns_server_port *port);
int evdns_server_request_add_reply(struct evdns_server_request *req, int section, const char *name, int type, int dns_class, int ttl, int datalen, int is_name, const char *data);