X-Git-Url: https://git.distorted.org.uk/~mdw/adns/blobdiff_plain/b5bc50768ee117e0fbe25452683f3ab201d6c69d..469fc8557310154e58edb66aa2dca20a94819267:/src/adns.h

diff --git a/src/adns.h b/src/adns.h
index 1b14ef9..b69a20b 100644
--- a/src/adns.h
+++ b/src/adns.h
@@ -58,6 +58,7 @@
 #define ADNS_H_INCLUDED
 
 #include <stdio.h>
+#include <stdarg.h>
 
 #include <sys/types.h>
 #include <sys/socket.h>
@@ -74,7 +75,8 @@ extern "C" { /* I really dislike this - iwj. */
 typedef struct adns__state *adns_state;
 typedef struct adns__query *adns_query;
 
-typedef enum {
+typedef enum { /* In general, or together the desired flags: */
+ adns_if_none=        0x0000,/* no flags.  nicer than 0 for some compilers */
  adns_if_noenv=       0x0001,/* do not look at environment */
  adns_if_noerrprint=  0x0002,/* never print to stderr (_debug overrides) */
  adns_if_noserverwarn=0x0004,/* do not warn to stderr about duff servers etc */
@@ -87,7 +89,8 @@ typedef enum {
  adns_if_checkc_freq= 0x0300 /* consistency checks very frequently (slow!) */
 } adns_initflags;
 
-typedef enum {
+typedef enum { /* In general, or together the desired flags: */
+ adns_qf_none=           0x00000000,/* no flags */
  adns_qf_search=         0x00000001,/* use the searchlist */
  adns_qf_usevc=          0x00000002,/* use a virtual circuit (TCP conn) */
  adns_qf_owner=          0x00000004,/* fill in the owner field in the answer */
@@ -117,7 +120,7 @@ typedef enum {
  adns_r_soa_raw=          6,
  adns_r_soa=                 adns_r_soa_raw|adns__qtf_mail822, 
  		     
- adns_r_ptr_raw=         12,
+ adns_r_ptr_raw=         12, /* do not mind PTR with wrong or missing A */
  adns_r_ptr=                 adns_r_ptr_raw|adns__qtf_deref,
  		     
  adns_r_hinfo=           13,  
@@ -337,7 +340,8 @@ typedef struct {
  *
  *  For _init, _init_strcfg, _submit and _synchronous, system errors
  *  (eg, failure to create sockets, malloc failure, etc.) return errno
- *  values.
+ *  values.  EINVAL from _init et al means the configuration file
+ *  is erroneous and cannot be parsed.
  * 
  *  For _wait and _check failures are reported in the answer
  *  structure, and only 0, ESRCH or (for _check) EAGAIN is
@@ -360,6 +364,19 @@ int adns_init(adns_state *newstate_r, adns_initflags flags,
 int adns_init_strcfg(adns_state *newstate_r, adns_initflags flags,
 		     FILE *diagfile /*0=>discard*/, const char *configtext);
 
+typedef void adns_logcallbackfn(adns_state ads, void *logfndata,
+				const char *fmt, va_list al);
+  /* Will be called perhaps several times for each message; when the
+   * message is complete, the string implied by fmt and al will end in
+   * a newline.  Log messages start with `adns debug:' or `adns
+   * warning:' or `adns:' (for errors), or `adns debug [PID]:'
+   * etc. if adns_if_logpid is set. */
+
+int adns_init_logfn(adns_state *newstate_r, adns_initflags flags,
+		    const char *configtext /*0=>use default config files*/,
+		    adns_logcallbackfn *logfn /*0=>logfndata is a FILE* */,
+		    void *logfndata /*0 with logfn==0 => discard*/);
+
 /* Configuration:
  *  adns_init reads /etc/resolv.conf, which is expected to be (broadly
  *  speaking) in the format expected by libresolv, and then
@@ -672,10 +689,10 @@ void adns_beforeselect(adns_state ads, int *maxfd, fd_set *readfds,
  * for adns_firsttimeout.  readfds, writefds, exceptfds and maxfd_io may
  * not be 0.
  *
- * If now is not 0 then this will never actually do any I/O, or change
- * the fds that adns is using or the timeouts it wants.  In any case
- * it won't block, and it will set the timeout to zero if a query
- * finishes in _beforeselect.
+ * If tv_mod is 0 on entry then this will never actually do any I/O,
+ * or change the fds that adns is using or the timeouts it wants.  In
+ * any case it won't block, and it will set the timeout to zero if a
+ * query finishes in _beforeselect.
  */
 
 void adns_afterselect(adns_state ads, int maxfd, const fd_set *readfds,